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authorgVisor bot <gvisor-bot@google.com>2020-08-03 20:39:15 +0000
committergVisor bot <gvisor-bot@google.com>2020-08-03 20:39:15 +0000
commit5dc426b55a2b3f695303aa76a3294585a0b32168 (patch)
treeb86d9c4c87cdd163af284499076a589f0de25d86 /pkg/sentry
parentea213f005adb71369f5a32cc38b096179f20ea8d (diff)
parentb2ae7ea1bb207eddadd7962080e7bd0b8634db96 (diff)
Merge release-20200622.1-313-gb2ae7ea1b (automated)
Diffstat (limited to 'pkg/sentry')
-rw-r--r--pkg/sentry/control/proc.go2
-rw-r--r--pkg/sentry/devices/memdev/full.go2
-rw-r--r--pkg/sentry/devices/memdev/null.go2
-rw-r--r--pkg/sentry/devices/memdev/random.go2
-rw-r--r--pkg/sentry/devices/memdev/zero.go2
-rw-r--r--pkg/sentry/devices/ttydev/ttydev.go2
-rw-r--r--pkg/sentry/devices/tundev/tundev.go4
-rw-r--r--pkg/sentry/fdimport/fdimport.go8
-rw-r--r--pkg/sentry/fs/copy_up.go12
-rw-r--r--pkg/sentry/fs/dev/net_tun.go4
-rw-r--r--pkg/sentry/fs/dirent.go110
-rw-r--r--pkg/sentry/fs/dirent_cache.go3
-rw-r--r--pkg/sentry/fs/dirent_state.go3
-rw-r--r--pkg/sentry/fs/fdpipe/pipe.go2
-rw-r--r--pkg/sentry/fs/file.go10
-rw-r--r--pkg/sentry/fs/file_operations.go2
-rw-r--r--pkg/sentry/fs/file_overlay.go22
-rw-r--r--pkg/sentry/fs/fsutil/file.go4
-rw-r--r--pkg/sentry/fs/gofer/file.go4
-rw-r--r--pkg/sentry/fs/gofer/handles.go5
-rw-r--r--pkg/sentry/fs/gofer/inode.go5
-rw-r--r--pkg/sentry/fs/gofer/path.go6
-rw-r--r--pkg/sentry/fs/gofer/session.go16
-rw-r--r--pkg/sentry/fs/gofer/session_state.go3
-rw-r--r--pkg/sentry/fs/gofer/socket.go6
-rw-r--r--pkg/sentry/fs/host/control.go2
-rw-r--r--pkg/sentry/fs/host/file.go4
-rw-r--r--pkg/sentry/fs/host/socket.go10
-rw-r--r--pkg/sentry/fs/host/tty.go4
-rw-r--r--pkg/sentry/fs/inode.go11
-rw-r--r--pkg/sentry/fs/inode_inotify.go5
-rw-r--r--pkg/sentry/fs/inode_overlay.go30
-rw-r--r--pkg/sentry/fs/inotify.go8
-rw-r--r--pkg/sentry/fs/inotify_watch.go9
-rw-r--r--pkg/sentry/fs/mount.go12
-rw-r--r--pkg/sentry/fs/mount_overlay.go6
-rw-r--r--pkg/sentry/fs/mounts.go30
-rw-r--r--pkg/sentry/fs/overlay.go10
-rw-r--r--pkg/sentry/fs/proc/fds.go18
-rw-r--r--pkg/sentry/fs/proc/mounts.go8
-rw-r--r--pkg/sentry/fs/proc/net.go12
-rw-r--r--pkg/sentry/fs/proc/proc.go2
-rw-r--r--pkg/sentry/fs/proc/task.go4
-rw-r--r--pkg/sentry/fs/ramfs/dir.go18
-rw-r--r--pkg/sentry/fs/timerfd/timerfd.go4
-rw-r--r--pkg/sentry/fs/tty/dir.go8
-rw-r--r--pkg/sentry/fs/tty/fs.go2
-rw-r--r--pkg/sentry/fs/tty/master.go8
-rw-r--r--pkg/sentry/fs/tty/slave.go4
-rw-r--r--pkg/sentry/fs/user/path.go8
-rw-r--r--pkg/sentry/fs/user/user.go8
-rw-r--r--pkg/sentry/fsbridge/bridge.go2
-rw-r--r--pkg/sentry/fsbridge/fs.go8
-rw-r--r--pkg/sentry/fsbridge/vfs.go6
-rw-r--r--pkg/sentry/fsimpl/devpts/devpts.go4
-rw-r--r--pkg/sentry/fsimpl/devpts/master.go6
-rw-r--r--pkg/sentry/fsimpl/devpts/slave.go6
-rw-r--r--pkg/sentry/fsimpl/devtmpfs/devtmpfs.go6
-rw-r--r--pkg/sentry/fsimpl/eventfd/eventfd.go6
-rw-r--r--pkg/sentry/fsimpl/fuse/dev.go2
-rw-r--r--pkg/sentry/fsimpl/fuse/fusefs.go4
-rw-r--r--pkg/sentry/fsimpl/gofer/directory.go4
-rw-r--r--pkg/sentry/fsimpl/gofer/filesystem.go90
-rw-r--r--pkg/sentry/fsimpl/gofer/gofer.go40
-rw-r--r--pkg/sentry/fsimpl/gofer/regular_file.go2
-rw-r--r--pkg/sentry/fsimpl/gofer/socket.go6
-rw-r--r--pkg/sentry/fsimpl/gofer/special_file.go4
-rw-r--r--pkg/sentry/fsimpl/host/control.go2
-rw-r--r--pkg/sentry/fsimpl/host/host.go14
-rw-r--r--pkg/sentry/fsimpl/host/socket.go12
-rw-r--r--pkg/sentry/fsimpl/host/tty.go4
-rw-r--r--pkg/sentry/fsimpl/kernfs/dynamic_bytes_file.go2
-rw-r--r--pkg/sentry/fsimpl/kernfs/fd_impl_util.go2
-rw-r--r--pkg/sentry/fsimpl/kernfs/filesystem.go68
-rw-r--r--pkg/sentry/fsimpl/kernfs/inode_impl_util.go10
-rw-r--r--pkg/sentry/fsimpl/kernfs/kernfs.go26
-rw-r--r--pkg/sentry/fsimpl/overlay/copy_up.go8
-rw-r--r--pkg/sentry/fsimpl/overlay/directory.go8
-rw-r--r--pkg/sentry/fsimpl/overlay/filesystem.go64
-rw-r--r--pkg/sentry/fsimpl/overlay/non_directory.go18
-rw-r--r--pkg/sentry/fsimpl/overlay/overlay.go48
-rw-r--r--pkg/sentry/fsimpl/pipefs/pipefs.go6
-rw-r--r--pkg/sentry/fsimpl/proc/filesystem.go4
-rw-r--r--pkg/sentry/fsimpl/proc/task_fds.go18
-rw-r--r--pkg/sentry/fsimpl/proc/task_files.go14
-rw-r--r--pkg/sentry/fsimpl/proc/task_net.go12
-rw-r--r--pkg/sentry/fsimpl/signalfd/signalfd.go4
-rw-r--r--pkg/sentry/fsimpl/sockfs/sockfs.go4
-rw-r--r--pkg/sentry/fsimpl/sys/sys.go4
-rw-r--r--pkg/sentry/fsimpl/timerfd/timerfd.go6
-rw-r--r--pkg/sentry/fsimpl/tmpfs/directory.go4
-rw-r--r--pkg/sentry/fsimpl/tmpfs/filesystem.go106
-rw-r--r--pkg/sentry/fsimpl/tmpfs/regular_file.go2
-rw-r--r--pkg/sentry/fsimpl/tmpfs/tmpfs.go34
-rw-r--r--pkg/sentry/kernel/abstract_socket_namespace.go13
-rw-r--r--pkg/sentry/kernel/epoll/epoll.go14
-rw-r--r--pkg/sentry/kernel/eventfd/eventfd.go4
-rw-r--r--pkg/sentry/kernel/fd_table.go55
-rw-r--r--pkg/sentry/kernel/fs_context.go31
-rw-r--r--pkg/sentry/kernel/futex/futex.go35
-rw-r--r--pkg/sentry/kernel/kernel.go57
-rw-r--r--pkg/sentry/kernel/pipe/node.go6
-rw-r--r--pkg/sentry/kernel/pipe/pipe.go2
-rw-r--r--pkg/sentry/kernel/pipe/pipe_util.go2
-rw-r--r--pkg/sentry/kernel/pipe/reader.go3
-rw-r--r--pkg/sentry/kernel/pipe/vfs.go8
-rw-r--r--pkg/sentry/kernel/pipe/writer.go3
-rw-r--r--pkg/sentry/kernel/sessions.go5
-rw-r--r--pkg/sentry/kernel/shm/shm.go10
-rw-r--r--pkg/sentry/kernel/signalfd/signalfd.go2
-rw-r--r--pkg/sentry/kernel/task.go8
-rw-r--r--pkg/sentry/kernel/task_clone.go10
-rw-r--r--pkg/sentry/kernel/task_exec.go6
-rw-r--r--pkg/sentry/kernel/task_exit.go8
-rw-r--r--pkg/sentry/kernel/task_log.go2
-rw-r--r--pkg/sentry/kernel/task_start.go6
-rw-r--r--pkg/sentry/kernel/thread_group.go4
-rw-r--r--pkg/sentry/loader/elf.go4
-rw-r--r--pkg/sentry/loader/loader.go6
-rw-r--r--pkg/sentry/memmap/memmap.go2
-rw-r--r--pkg/sentry/mm/aio_context.go6
-rw-r--r--pkg/sentry/mm/lifecycle.go2
-rw-r--r--pkg/sentry/mm/metadata.go5
-rw-r--r--pkg/sentry/mm/special_mappable.go4
-rw-r--r--pkg/sentry/mm/syscalls.go4
-rw-r--r--pkg/sentry/mm/vma.go4
-rw-r--r--pkg/sentry/socket/control/control.go8
-rw-r--r--pkg/sentry/socket/control/control_vfs2.go8
-rw-r--r--pkg/sentry/socket/hostinet/socket.go8
-rw-r--r--pkg/sentry/socket/netlink/provider.go2
-rw-r--r--pkg/sentry/socket/netlink/socket.go14
-rw-r--r--pkg/sentry/socket/netlink/socket_vfs2.go4
-rw-r--r--pkg/sentry/socket/netstack/netstack.go6
-rw-r--r--pkg/sentry/socket/netstack/netstack_vfs2.go2
-rw-r--r--pkg/sentry/socket/socket.go4
-rw-r--r--pkg/sentry/socket/unix/transport/connectioned.go10
-rw-r--r--pkg/sentry/socket/unix/transport/connectionless.go12
-rw-r--r--pkg/sentry/socket/unix/transport/queue.go13
-rw-r--r--pkg/sentry/socket/unix/transport/unix.go48
-rw-r--r--pkg/sentry/socket/unix/unix.go38
-rw-r--r--pkg/sentry/socket/unix/unix_vfs2.go18
-rw-r--r--pkg/sentry/strace/strace.go12
-rw-r--r--pkg/sentry/syscalls/epoll.go18
-rw-r--r--pkg/sentry/syscalls/linux/sys_aio.go8
-rw-r--r--pkg/sentry/syscalls/linux/sys_eventfd.go2
-rw-r--r--pkg/sentry/syscalls/linux/sys_file.go78
-rw-r--r--pkg/sentry/syscalls/linux/sys_futex.go6
-rw-r--r--pkg/sentry/syscalls/linux/sys_getdents.go2
-rw-r--r--pkg/sentry/syscalls/linux/sys_inotify.go10
-rw-r--r--pkg/sentry/syscalls/linux/sys_lseek.go2
-rw-r--r--pkg/sentry/syscalls/linux/sys_mmap.go4
-rw-r--r--pkg/sentry/syscalls/linux/sys_mount.go2
-rw-r--r--pkg/sentry/syscalls/linux/sys_pipe.go6
-rw-r--r--pkg/sentry/syscalls/linux/sys_poll.go10
-rw-r--r--pkg/sentry/syscalls/linux/sys_prctl.go4
-rw-r--r--pkg/sentry/syscalls/linux/sys_read.go12
-rw-r--r--pkg/sentry/syscalls/linux/sys_shm.go10
-rw-r--r--pkg/sentry/syscalls/linux/sys_signal.go4
-rw-r--r--pkg/sentry/syscalls/linux/sys_socket.go46
-rw-r--r--pkg/sentry/syscalls/linux/sys_splice.go12
-rw-r--r--pkg/sentry/syscalls/linux/sys_stat.go8
-rw-r--r--pkg/sentry/syscalls/linux/sys_sync.go8
-rw-r--r--pkg/sentry/syscalls/linux/sys_thread.go6
-rw-r--r--pkg/sentry/syscalls/linux/sys_timerfd.go6
-rw-r--r--pkg/sentry/syscalls/linux/sys_write.go10
-rw-r--r--pkg/sentry/syscalls/linux/sys_xattr.go8
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/aio.go8
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/epoll.go14
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/eventfd.go4
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/execve.go12
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/fd.go12
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/filesystem.go22
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/fscontext.go22
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/getdents.go2
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/inotify.go14
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/ioctl.go2
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/lock.go2
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/memfd.go2
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/mmap.go4
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/mount.go4
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/path.go12
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/pipe.go6
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/poll.go10
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/read_write.go48
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/setstat.go20
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/signal.go4
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/socket.go46
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/splice.go20
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/stat.go30
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/sync.go6
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/timerfd.go8
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/xattr.go16
-rw-r--r--pkg/sentry/vfs/anonfs.go8
-rw-r--r--pkg/sentry/vfs/dentry.go37
-rw-r--r--pkg/sentry/vfs/epoll.go6
-rw-r--r--pkg/sentry/vfs/file_description.go24
-rw-r--r--pkg/sentry/vfs/filesystem.go6
-rw-r--r--pkg/sentry/vfs/inotify.go34
-rw-r--r--pkg/sentry/vfs/mount.go54
-rw-r--r--pkg/sentry/vfs/pathname.go18
-rw-r--r--pkg/sentry/vfs/resolving_path.go43
-rw-r--r--pkg/sentry/vfs/vfs.go160
202 files changed, 1380 insertions, 1366 deletions
diff --git a/pkg/sentry/control/proc.go b/pkg/sentry/control/proc.go
index 1bae7cfaf..dfa936563 100644
--- a/pkg/sentry/control/proc.go
+++ b/pkg/sentry/control/proc.go
@@ -139,7 +139,6 @@ func ExecAsync(proc *Proc, args *ExecArgs) (*kernel.ThreadGroup, kernel.ThreadID
func (proc *Proc) execAsync(args *ExecArgs) (*kernel.ThreadGroup, kernel.ThreadID, *host.TTYFileOperations, *hostvfs2.TTYFileDescription, error) {
// Import file descriptors.
fdTable := proc.Kernel.NewFDTable()
- defer fdTable.DecRef()
creds := auth.NewUserCredentials(
args.KUID,
@@ -177,6 +176,7 @@ func (proc *Proc) execAsync(args *ExecArgs) (*kernel.ThreadGroup, kernel.ThreadI
initArgs.MountNamespaceVFS2.IncRef()
}
ctx := initArgs.NewContext(proc.Kernel)
+ defer fdTable.DecRef(ctx)
if kernel.VFS2Enabled {
// Get the full path to the filename from the PATH env variable.
diff --git a/pkg/sentry/devices/memdev/full.go b/pkg/sentry/devices/memdev/full.go
index af66fe4dc..511179e31 100644
--- a/pkg/sentry/devices/memdev/full.go
+++ b/pkg/sentry/devices/memdev/full.go
@@ -46,7 +46,7 @@ type fullFD struct {
}
// Release implements vfs.FileDescriptionImpl.Release.
-func (fd *fullFD) Release() {
+func (fd *fullFD) Release(context.Context) {
// noop
}
diff --git a/pkg/sentry/devices/memdev/null.go b/pkg/sentry/devices/memdev/null.go
index 92d3d71be..4918dbeeb 100644
--- a/pkg/sentry/devices/memdev/null.go
+++ b/pkg/sentry/devices/memdev/null.go
@@ -47,7 +47,7 @@ type nullFD struct {
}
// Release implements vfs.FileDescriptionImpl.Release.
-func (fd *nullFD) Release() {
+func (fd *nullFD) Release(context.Context) {
// noop
}
diff --git a/pkg/sentry/devices/memdev/random.go b/pkg/sentry/devices/memdev/random.go
index 6b81da5ef..5e7fe0280 100644
--- a/pkg/sentry/devices/memdev/random.go
+++ b/pkg/sentry/devices/memdev/random.go
@@ -56,7 +56,7 @@ type randomFD struct {
}
// Release implements vfs.FileDescriptionImpl.Release.
-func (fd *randomFD) Release() {
+func (fd *randomFD) Release(context.Context) {
// noop
}
diff --git a/pkg/sentry/devices/memdev/zero.go b/pkg/sentry/devices/memdev/zero.go
index c6f15054d..2e631a252 100644
--- a/pkg/sentry/devices/memdev/zero.go
+++ b/pkg/sentry/devices/memdev/zero.go
@@ -48,7 +48,7 @@ type zeroFD struct {
}
// Release implements vfs.FileDescriptionImpl.Release.
-func (fd *zeroFD) Release() {
+func (fd *zeroFD) Release(context.Context) {
// noop
}
diff --git a/pkg/sentry/devices/ttydev/ttydev.go b/pkg/sentry/devices/ttydev/ttydev.go
index fbb7fd92c..fd4b79c46 100644
--- a/pkg/sentry/devices/ttydev/ttydev.go
+++ b/pkg/sentry/devices/ttydev/ttydev.go
@@ -55,7 +55,7 @@ type ttyFD struct {
}
// Release implements vfs.FileDescriptionImpl.Release.
-func (fd *ttyFD) Release() {}
+func (fd *ttyFD) Release(context.Context) {}
// PRead implements vfs.FileDescriptionImpl.PRead.
func (fd *ttyFD) PRead(ctx context.Context, dst usermem.IOSequence, offset int64, opts vfs.ReadOptions) (int64, error) {
diff --git a/pkg/sentry/devices/tundev/tundev.go b/pkg/sentry/devices/tundev/tundev.go
index dfbd069af..852ec3c5c 100644
--- a/pkg/sentry/devices/tundev/tundev.go
+++ b/pkg/sentry/devices/tundev/tundev.go
@@ -108,8 +108,8 @@ func (fd *tunFD) Ioctl(ctx context.Context, uio usermem.IO, args arch.SyscallArg
}
// Release implements vfs.FileDescriptionImpl.Release.
-func (fd *tunFD) Release() {
- fd.device.Release()
+func (fd *tunFD) Release(ctx context.Context) {
+ fd.device.Release(ctx)
}
// PRead implements vfs.FileDescriptionImpl.PRead.
diff --git a/pkg/sentry/fdimport/fdimport.go b/pkg/sentry/fdimport/fdimport.go
index b8686adb4..1b7cb94c0 100644
--- a/pkg/sentry/fdimport/fdimport.go
+++ b/pkg/sentry/fdimport/fdimport.go
@@ -50,7 +50,7 @@ func importFS(ctx context.Context, fdTable *kernel.FDTable, console bool, fds []
if err != nil {
return nil, err
}
- defer appFile.DecRef()
+ defer appFile.DecRef(ctx)
// Remember this in the TTY file, as we will
// use it for the other stdio FDs.
@@ -69,7 +69,7 @@ func importFS(ctx context.Context, fdTable *kernel.FDTable, console bool, fds []
if err != nil {
return nil, err
}
- defer appFile.DecRef()
+ defer appFile.DecRef(ctx)
}
// Add the file to the FD map.
@@ -102,7 +102,7 @@ func importVFS2(ctx context.Context, fdTable *kernel.FDTable, console bool, stdi
if err != nil {
return nil, err
}
- defer appFile.DecRef()
+ defer appFile.DecRef(ctx)
// Remember this in the TTY file, as we will use it for the other stdio
// FDs.
@@ -119,7 +119,7 @@ func importVFS2(ctx context.Context, fdTable *kernel.FDTable, console bool, stdi
if err != nil {
return nil, err
}
- defer appFile.DecRef()
+ defer appFile.DecRef(ctx)
}
if err := fdTable.NewFDAtVFS2(ctx, int32(appFD), appFile, kernel.FDFlags{}); err != nil {
diff --git a/pkg/sentry/fs/copy_up.go b/pkg/sentry/fs/copy_up.go
index ab1424c95..735452b07 100644
--- a/pkg/sentry/fs/copy_up.go
+++ b/pkg/sentry/fs/copy_up.go
@@ -201,7 +201,7 @@ func copyUpLocked(ctx context.Context, parent *Dirent, next *Dirent) error {
parentUpper := parent.Inode.overlay.upper
root := RootFromContext(ctx)
if root != nil {
- defer root.DecRef()
+ defer root.DecRef(ctx)
}
// Create the file in the upper filesystem and get an Inode for it.
@@ -212,7 +212,7 @@ func copyUpLocked(ctx context.Context, parent *Dirent, next *Dirent) error {
log.Warningf("copy up failed to create file: %v", err)
return syserror.EIO
}
- defer childFile.DecRef()
+ defer childFile.DecRef(ctx)
childUpperInode = childFile.Dirent.Inode
case Directory:
@@ -226,7 +226,7 @@ func copyUpLocked(ctx context.Context, parent *Dirent, next *Dirent) error {
cleanupUpper(ctx, parentUpper, next.name, werr)
return syserror.EIO
}
- defer childUpper.DecRef()
+ defer childUpper.DecRef(ctx)
childUpperInode = childUpper.Inode
case Symlink:
@@ -246,7 +246,7 @@ func copyUpLocked(ctx context.Context, parent *Dirent, next *Dirent) error {
cleanupUpper(ctx, parentUpper, next.name, werr)
return syserror.EIO
}
- defer childUpper.DecRef()
+ defer childUpper.DecRef(ctx)
childUpperInode = childUpper.Inode
default:
@@ -352,14 +352,14 @@ func copyContentsLocked(ctx context.Context, upper *Inode, lower *Inode, size in
if err != nil {
return err
}
- defer upperFile.DecRef()
+ defer upperFile.DecRef(ctx)
// Get a handle to the lower filesystem, which we will read from.
lowerFile, err := overlayFile(ctx, lower, FileFlags{Read: true})
if err != nil {
return err
}
- defer lowerFile.DecRef()
+ defer lowerFile.DecRef(ctx)
// Use a buffer pool to minimize allocations.
buf := copyUpBuffers.Get().([]byte)
diff --git a/pkg/sentry/fs/dev/net_tun.go b/pkg/sentry/fs/dev/net_tun.go
index dc7ad075a..ec474e554 100644
--- a/pkg/sentry/fs/dev/net_tun.go
+++ b/pkg/sentry/fs/dev/net_tun.go
@@ -80,8 +80,8 @@ type netTunFileOperations struct {
var _ fs.FileOperations = (*netTunFileOperations)(nil)
// Release implements fs.FileOperations.Release.
-func (fops *netTunFileOperations) Release() {
- fops.device.Release()
+func (fops *netTunFileOperations) Release(ctx context.Context) {
+ fops.device.Release(ctx)
}
// Ioctl implements fs.FileOperations.Ioctl.
diff --git a/pkg/sentry/fs/dirent.go b/pkg/sentry/fs/dirent.go
index 65be12175..a2f751068 100644
--- a/pkg/sentry/fs/dirent.go
+++ b/pkg/sentry/fs/dirent.go
@@ -325,7 +325,7 @@ func (d *Dirent) SyncAll(ctx context.Context) {
for _, w := range d.children {
if child := w.Get(); child != nil {
child.(*Dirent).SyncAll(ctx)
- child.DecRef()
+ child.DecRef(ctx)
}
}
}
@@ -451,7 +451,7 @@ func (d *Dirent) walk(ctx context.Context, root *Dirent, name string, walkMayUnl
// which don't hold a hard reference on their parent (their parent holds a
// hard reference on them, and they contain virtually no state). But this is
// good house-keeping.
- child.DecRef()
+ child.DecRef(ctx)
return nil, syscall.ENOENT
}
@@ -468,20 +468,20 @@ func (d *Dirent) walk(ctx context.Context, root *Dirent, name string, walkMayUnl
// their pins on the child. Inotify doesn't properly support filesystems that
// revalidate dirents (since watches are lost on revalidation), but if we fail
// to unpin the watches child will never be GCed.
- cd.Inode.Watches.Unpin(cd)
+ cd.Inode.Watches.Unpin(ctx, cd)
// This child needs to be revalidated, fallthrough to unhash it. Make sure
// to not leak a reference from Get().
//
// Note that previous lookups may still have a reference to this stale child;
// this can't be helped, but we can ensure that *new* lookups are up-to-date.
- child.DecRef()
+ child.DecRef(ctx)
}
// Either our weak reference expired or we need to revalidate it. Unhash child first, we're
// about to replace it.
delete(d.children, name)
- w.Drop()
+ w.Drop(ctx)
}
// Slow path: load the InodeOperations into memory. Since this is a hot path and the lookup may be
@@ -512,12 +512,12 @@ func (d *Dirent) walk(ctx context.Context, root *Dirent, name string, walkMayUnl
// There are active references to the existing child, prefer it to the one we
// retrieved from Lookup. Likely the Lookup happened very close to the insertion
// of child, so considering one stale over the other is fairly arbitrary.
- c.DecRef()
+ c.DecRef(ctx)
// The child that was installed could be negative.
if cd.IsNegative() {
// If so, don't leak a reference and short circuit.
- child.DecRef()
+ child.DecRef(ctx)
return nil, syscall.ENOENT
}
@@ -531,7 +531,7 @@ func (d *Dirent) walk(ctx context.Context, root *Dirent, name string, walkMayUnl
// we did the Inode.Lookup. Fully drop the weak reference and fallback to using the child
// we looked up.
delete(d.children, name)
- w.Drop()
+ w.Drop(ctx)
}
// Give the looked up child a parent. We cannot kick out entries, since we just checked above
@@ -587,7 +587,7 @@ func (d *Dirent) exists(ctx context.Context, root *Dirent, name string) bool {
return false
}
// Child exists.
- child.DecRef()
+ child.DecRef(ctx)
return true
}
@@ -622,7 +622,7 @@ func (d *Dirent) Create(ctx context.Context, root *Dirent, name string, flags Fi
}
child := file.Dirent
- d.finishCreate(child, name)
+ d.finishCreate(ctx, child, name)
// Return the reference and the new file. When the last reference to
// the file is dropped, file.Dirent may no longer be cached.
@@ -631,7 +631,7 @@ func (d *Dirent) Create(ctx context.Context, root *Dirent, name string, flags Fi
// finishCreate validates the created file, adds it as a child of this dirent,
// and notifies any watchers.
-func (d *Dirent) finishCreate(child *Dirent, name string) {
+func (d *Dirent) finishCreate(ctx context.Context, child *Dirent, name string) {
// Sanity check c, its name must be consistent.
if child.name != name {
panic(fmt.Sprintf("create from %q to %q returned unexpected name %q", d.name, name, child.name))
@@ -650,14 +650,14 @@ func (d *Dirent) finishCreate(child *Dirent, name string) {
panic(fmt.Sprintf("hashed child %q over a positive child", child.name))
}
// Don't leak a reference.
- old.DecRef()
+ old.DecRef(ctx)
// Drop d's reference.
- old.DecRef()
+ old.DecRef(ctx)
}
// Finally drop the useless weak reference on the floor.
- w.Drop()
+ w.Drop(ctx)
}
d.Inode.Watches.Notify(name, linux.IN_CREATE, 0)
@@ -686,17 +686,17 @@ func (d *Dirent) genericCreate(ctx context.Context, root *Dirent, name string, c
panic(fmt.Sprintf("hashed over a positive child %q", old.(*Dirent).name))
}
// Don't leak a reference.
- old.DecRef()
+ old.DecRef(ctx)
// Drop d's reference.
- old.DecRef()
+ old.DecRef(ctx)
}
// Unhash the negative Dirent, name needs to exist now.
delete(d.children, name)
// Finally drop the useless weak reference on the floor.
- w.Drop()
+ w.Drop(ctx)
}
// Execute the create operation.
@@ -756,7 +756,7 @@ func (d *Dirent) Bind(ctx context.Context, root *Dirent, name string, data trans
if e != nil {
return e
}
- d.finishCreate(childDir, name)
+ d.finishCreate(ctx, childDir, name)
return nil
})
if err == syscall.EEXIST {
@@ -901,7 +901,7 @@ func direntReaddir(ctx context.Context, d *Dirent, it DirIterator, root *Dirent,
// references to children.
//
// Preconditions: d.mu must be held.
-func (d *Dirent) flush() {
+func (d *Dirent) flush(ctx context.Context) {
expired := make(map[string]*refs.WeakRef)
for n, w := range d.children {
// Call flush recursively on each child before removing our
@@ -912,7 +912,7 @@ func (d *Dirent) flush() {
if !cd.IsNegative() {
// Flush the child.
cd.mu.Lock()
- cd.flush()
+ cd.flush(ctx)
cd.mu.Unlock()
// Allow the file system to drop extra references on child.
@@ -920,13 +920,13 @@ func (d *Dirent) flush() {
}
// Don't leak a reference.
- child.DecRef()
+ child.DecRef(ctx)
}
// Check if the child dirent is closed, and mark it as expired if it is.
// We must call w.Get() again here, since the child could have been closed
// by the calls to flush() and cache.Remove() in the above if-block.
if child := w.Get(); child != nil {
- child.DecRef()
+ child.DecRef(ctx)
} else {
expired[n] = w
}
@@ -935,7 +935,7 @@ func (d *Dirent) flush() {
// Remove expired entries.
for n, w := range expired {
delete(d.children, n)
- w.Drop()
+ w.Drop(ctx)
}
}
@@ -977,7 +977,7 @@ func (d *Dirent) mount(ctx context.Context, inode *Inode) (newChild *Dirent, err
if !ok {
panic("mount must mount over an existing dirent")
}
- weakRef.Drop()
+ weakRef.Drop(ctx)
// Note that even though `d` is now hidden, it still holds a reference
// to its parent.
@@ -1002,13 +1002,13 @@ func (d *Dirent) unmount(ctx context.Context, replacement *Dirent) error {
if !ok {
panic("mount must mount over an existing dirent")
}
- weakRef.Drop()
+ weakRef.Drop(ctx)
// d is not reachable anymore, and hence not mounted anymore.
d.mounted = false
// Drop mount reference.
- d.DecRef()
+ d.DecRef(ctx)
return nil
}
@@ -1029,7 +1029,7 @@ func (d *Dirent) Remove(ctx context.Context, root *Dirent, name string, dirPath
// Child does not exist.
return err
}
- defer child.DecRef()
+ defer child.DecRef(ctx)
// Remove cannot remove directories.
if IsDir(child.Inode.StableAttr) {
@@ -1055,7 +1055,7 @@ func (d *Dirent) Remove(ctx context.Context, root *Dirent, name string, dirPath
atomic.StoreInt32(&child.deleted, 1)
if w, ok := d.children[name]; ok {
delete(d.children, name)
- w.Drop()
+ w.Drop(ctx)
}
// Allow the file system to drop extra references on child.
@@ -1067,7 +1067,7 @@ func (d *Dirent) Remove(ctx context.Context, root *Dirent, name string, dirPath
// inode may have other links. If this was the last link, the events for the
// watch removal will be queued by the inode destructor.
child.Inode.Watches.MarkUnlinked()
- child.Inode.Watches.Unpin(child)
+ child.Inode.Watches.Unpin(ctx, child)
d.Inode.Watches.Notify(name, linux.IN_DELETE, 0)
return nil
@@ -1100,7 +1100,7 @@ func (d *Dirent) RemoveDirectory(ctx context.Context, root *Dirent, name string)
// Child does not exist.
return err
}
- defer child.DecRef()
+ defer child.DecRef(ctx)
// RemoveDirectory can only remove directories.
if !IsDir(child.Inode.StableAttr) {
@@ -1121,7 +1121,7 @@ func (d *Dirent) RemoveDirectory(ctx context.Context, root *Dirent, name string)
atomic.StoreInt32(&child.deleted, 1)
if w, ok := d.children[name]; ok {
delete(d.children, name)
- w.Drop()
+ w.Drop(ctx)
}
// Allow the file system to drop extra references on child.
@@ -1130,14 +1130,14 @@ func (d *Dirent) RemoveDirectory(ctx context.Context, root *Dirent, name string)
// Finally, let inotify know the child is being unlinked. Drop any extra
// refs from inotify to this child dirent.
child.Inode.Watches.MarkUnlinked()
- child.Inode.Watches.Unpin(child)
+ child.Inode.Watches.Unpin(ctx, child)
d.Inode.Watches.Notify(name, linux.IN_ISDIR|linux.IN_DELETE, 0)
return nil
}
// destroy closes this node and all children.
-func (d *Dirent) destroy() {
+func (d *Dirent) destroy(ctx context.Context) {
if d.IsNegative() {
// Nothing to tear-down and no parent references to drop, since a negative
// Dirent does not take a references on its parent, has no Inode and no children.
@@ -1153,19 +1153,19 @@ func (d *Dirent) destroy() {
if c.(*Dirent).IsNegative() {
// The parent holds both weak and strong refs in the case of
// negative dirents.
- c.DecRef()
+ c.DecRef(ctx)
}
// Drop the reference we just acquired in WeakRef.Get.
- c.DecRef()
+ c.DecRef(ctx)
}
- w.Drop()
+ w.Drop(ctx)
}
d.children = nil
allDirents.remove(d)
// Drop our reference to the Inode.
- d.Inode.DecRef()
+ d.Inode.DecRef(ctx)
// Allow the Dirent to be GC'ed after this point, since the Inode may still
// be referenced after the Dirent is destroyed (for instance by filesystem
@@ -1175,7 +1175,7 @@ func (d *Dirent) destroy() {
// Drop the reference we have on our parent if we took one. renameMu doesn't need to be
// held because d can't be reparented without any references to it left.
if d.parent != nil {
- d.parent.DecRef()
+ d.parent.DecRef(ctx)
}
}
@@ -1201,14 +1201,14 @@ func (d *Dirent) TryIncRef() bool {
// DecRef decreases the Dirent's refcount and drops its reference on its mount.
//
// DecRef implements RefCounter.DecRef with destructor d.destroy.
-func (d *Dirent) DecRef() {
+func (d *Dirent) DecRef(ctx context.Context) {
if d.Inode != nil {
// Keep mount around, since DecRef may destroy d.Inode.
msrc := d.Inode.MountSource
- d.DecRefWithDestructor(d.destroy)
+ d.DecRefWithDestructor(ctx, d.destroy)
msrc.DecDirentRefs()
} else {
- d.DecRefWithDestructor(d.destroy)
+ d.DecRefWithDestructor(ctx, d.destroy)
}
}
@@ -1359,7 +1359,7 @@ func (d *Dirent) MayDelete(ctx context.Context, root *Dirent, name string) error
if err != nil {
return err
}
- defer victim.DecRef()
+ defer victim.DecRef(ctx)
return d.mayDelete(ctx, victim)
}
@@ -1411,7 +1411,7 @@ func Rename(ctx context.Context, root *Dirent, oldParent *Dirent, oldName string
if err != nil {
return err
}
- defer renamed.DecRef()
+ defer renamed.DecRef(ctx)
// Check that the renamed dirent is deletable.
if err := oldParent.mayDelete(ctx, renamed); err != nil {
@@ -1453,13 +1453,13 @@ func Rename(ctx context.Context, root *Dirent, oldParent *Dirent, oldName string
// Check that we can delete replaced.
if err := newParent.mayDelete(ctx, replaced); err != nil {
- replaced.DecRef()
+ replaced.DecRef(ctx)
return err
}
// Target should not be an ancestor of source.
if oldParent.descendantOf(replaced) {
- replaced.DecRef()
+ replaced.DecRef(ctx)
// Note that Linux returns EINVAL if the source is an
// ancestor of target, but ENOTEMPTY if the target is
@@ -1470,7 +1470,7 @@ func Rename(ctx context.Context, root *Dirent, oldParent *Dirent, oldName string
// Check that replaced is not a mount point.
if replaced.isMountPointLocked() {
- replaced.DecRef()
+ replaced.DecRef(ctx)
return syscall.EBUSY
}
@@ -1478,11 +1478,11 @@ func Rename(ctx context.Context, root *Dirent, oldParent *Dirent, oldName string
oldIsDir := IsDir(renamed.Inode.StableAttr)
newIsDir := IsDir(replaced.Inode.StableAttr)
if !newIsDir && oldIsDir {
- replaced.DecRef()
+ replaced.DecRef(ctx)
return syscall.ENOTDIR
}
if !oldIsDir && newIsDir {
- replaced.DecRef()
+ replaced.DecRef(ctx)
return syscall.EISDIR
}
@@ -1493,13 +1493,13 @@ func Rename(ctx context.Context, root *Dirent, oldParent *Dirent, oldName string
// open across renames is currently broken for multiple
// reasons, so we flush all references on the replaced node and
// its children.
- replaced.Inode.Watches.Unpin(replaced)
+ replaced.Inode.Watches.Unpin(ctx, replaced)
replaced.mu.Lock()
- replaced.flush()
+ replaced.flush(ctx)
replaced.mu.Unlock()
// Done with replaced.
- replaced.DecRef()
+ replaced.DecRef(ctx)
}
if err := renamed.Inode.Rename(ctx, oldParent, renamed, newParent, newName, replaced != nil); err != nil {
@@ -1513,14 +1513,14 @@ func Rename(ctx context.Context, root *Dirent, oldParent *Dirent, oldName string
// can't destroy oldParent (and try to retake its lock) because
// Rename's caller must be holding a reference.
newParent.IncRef()
- oldParent.DecRef()
+ oldParent.DecRef(ctx)
}
if w, ok := newParent.children[newName]; ok {
- w.Drop()
+ w.Drop(ctx)
delete(newParent.children, newName)
}
if w, ok := oldParent.children[oldName]; ok {
- w.Drop()
+ w.Drop(ctx)
delete(oldParent.children, oldName)
}
@@ -1551,7 +1551,7 @@ func Rename(ctx context.Context, root *Dirent, oldParent *Dirent, oldName string
// Same as replaced.flush above.
renamed.mu.Lock()
- renamed.flush()
+ renamed.flush(ctx)
renamed.mu.Unlock()
return nil
diff --git a/pkg/sentry/fs/dirent_cache.go b/pkg/sentry/fs/dirent_cache.go
index 33de32c69..7d9dd717e 100644
--- a/pkg/sentry/fs/dirent_cache.go
+++ b/pkg/sentry/fs/dirent_cache.go
@@ -17,6 +17,7 @@ package fs
import (
"fmt"
+ "gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/sync"
)
@@ -101,7 +102,7 @@ func (c *DirentCache) remove(d *Dirent) {
panic(fmt.Sprintf("trying to remove %v, which is not in the dirent cache", d))
}
c.list.Remove(d)
- d.DecRef()
+ d.DecRef(context.Background())
c.currentSize--
if c.limit != nil {
c.limit.dec()
diff --git a/pkg/sentry/fs/dirent_state.go b/pkg/sentry/fs/dirent_state.go
index f623d6c0e..67a35f0b2 100644
--- a/pkg/sentry/fs/dirent_state.go
+++ b/pkg/sentry/fs/dirent_state.go
@@ -18,6 +18,7 @@ import (
"fmt"
"sync/atomic"
+ "gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/refs"
)
@@ -48,7 +49,7 @@ func (d *Dirent) saveChildren() map[string]*Dirent {
for name, w := range d.children {
if rc := w.Get(); rc != nil {
// Drop the reference count obtain in w.Get()
- rc.DecRef()
+ rc.DecRef(context.Background())
cd := rc.(*Dirent)
if cd.IsNegative() {
diff --git a/pkg/sentry/fs/fdpipe/pipe.go b/pkg/sentry/fs/fdpipe/pipe.go
index 9fce177ad..b99199798 100644
--- a/pkg/sentry/fs/fdpipe/pipe.go
+++ b/pkg/sentry/fs/fdpipe/pipe.go
@@ -115,7 +115,7 @@ func (p *pipeOperations) Readiness(mask waiter.EventMask) (eventMask waiter.Even
}
// Release implements fs.FileOperations.Release.
-func (p *pipeOperations) Release() {
+func (p *pipeOperations) Release(context.Context) {
fdnotifier.RemoveFD(int32(p.file.FD()))
p.file.Close()
p.file = nil
diff --git a/pkg/sentry/fs/file.go b/pkg/sentry/fs/file.go
index ca41520b4..72ea70fcf 100644
--- a/pkg/sentry/fs/file.go
+++ b/pkg/sentry/fs/file.go
@@ -142,17 +142,17 @@ func NewFile(ctx context.Context, dirent *Dirent, flags FileFlags, fops FileOper
}
// DecRef destroys the File when it is no longer referenced.
-func (f *File) DecRef() {
- f.DecRefWithDestructor(func() {
+func (f *File) DecRef(ctx context.Context) {
+ f.DecRefWithDestructor(ctx, func(context.Context) {
// Drop BSD style locks.
lockRng := lock.LockRange{Start: 0, End: lock.LockEOF}
f.Dirent.Inode.LockCtx.BSD.UnlockRegion(f, lockRng)
// Release resources held by the FileOperations.
- f.FileOperations.Release()
+ f.FileOperations.Release(ctx)
// Release a reference on the Dirent.
- f.Dirent.DecRef()
+ f.Dirent.DecRef(ctx)
// Only unregister if we are currently registered. There is nothing
// to register if f.async is nil (this happens when async mode is
@@ -460,7 +460,7 @@ func (f *File) UnstableAttr(ctx context.Context) (UnstableAttr, error) {
func (f *File) MappedName(ctx context.Context) string {
root := RootFromContext(ctx)
if root != nil {
- defer root.DecRef()
+ defer root.DecRef(ctx)
}
name, _ := f.Dirent.FullName(root)
return name
diff --git a/pkg/sentry/fs/file_operations.go b/pkg/sentry/fs/file_operations.go
index f5537411e..305c0f840 100644
--- a/pkg/sentry/fs/file_operations.go
+++ b/pkg/sentry/fs/file_operations.go
@@ -67,7 +67,7 @@ type SpliceOpts struct {
// - File.Flags(): This value may change during the operation.
type FileOperations interface {
// Release release resources held by FileOperations.
- Release()
+ Release(ctx context.Context)
// Waitable defines how this File can be waited on for read and
// write readiness.
diff --git a/pkg/sentry/fs/file_overlay.go b/pkg/sentry/fs/file_overlay.go
index dcc1df38f..9dc58d5ff 100644
--- a/pkg/sentry/fs/file_overlay.go
+++ b/pkg/sentry/fs/file_overlay.go
@@ -54,7 +54,7 @@ func overlayFile(ctx context.Context, inode *Inode, flags FileFlags) (*File, err
// Drop the extra reference on the Dirent. Now there's only one reference
// on the dirent, either owned by f (if non-nil), or the Dirent is about
// to be destroyed (if GetFile failed).
- dirent.DecRef()
+ dirent.DecRef(ctx)
return f, err
}
@@ -89,12 +89,12 @@ type overlayFileOperations struct {
}
// Release implements FileOperations.Release.
-func (f *overlayFileOperations) Release() {
+func (f *overlayFileOperations) Release(ctx context.Context) {
if f.upper != nil {
- f.upper.DecRef()
+ f.upper.DecRef(ctx)
}
if f.lower != nil {
- f.lower.DecRef()
+ f.lower.DecRef(ctx)
}
}
@@ -164,7 +164,7 @@ func (f *overlayFileOperations) Seek(ctx context.Context, file *File, whence See
func (f *overlayFileOperations) Readdir(ctx context.Context, file *File, serializer DentrySerializer) (int64, error) {
root := RootFromContext(ctx)
if root != nil {
- defer root.DecRef()
+ defer root.DecRef(ctx)
}
dirCtx := &DirCtx{
@@ -497,7 +497,7 @@ func readdirOne(ctx context.Context, d *Dirent) (map[string]DentAttr, error) {
if err != nil {
return nil, err
}
- defer dir.DecRef()
+ defer dir.DecRef(ctx)
// Use a stub serializer to read the entries into memory.
stubSerializer := &CollectEntriesSerializer{}
@@ -521,10 +521,10 @@ type overlayMappingIdentity struct {
}
// DecRef implements AtomicRefCount.DecRef.
-func (omi *overlayMappingIdentity) DecRef() {
- omi.AtomicRefCount.DecRefWithDestructor(func() {
- omi.overlayFile.DecRef()
- omi.id.DecRef()
+func (omi *overlayMappingIdentity) DecRef(ctx context.Context) {
+ omi.AtomicRefCount.DecRefWithDestructor(ctx, func(context.Context) {
+ omi.overlayFile.DecRef(ctx)
+ omi.id.DecRef(ctx)
})
}
@@ -544,7 +544,7 @@ func (omi *overlayMappingIdentity) InodeID() uint64 {
func (omi *overlayMappingIdentity) MappedName(ctx context.Context) string {
root := RootFromContext(ctx)
if root != nil {
- defer root.DecRef()
+ defer root.DecRef(ctx)
}
name, _ := omi.overlayFile.Dirent.FullName(root)
return name
diff --git a/pkg/sentry/fs/fsutil/file.go b/pkg/sentry/fs/fsutil/file.go
index 08695391c..dc9efa5df 100644
--- a/pkg/sentry/fs/fsutil/file.go
+++ b/pkg/sentry/fs/fsutil/file.go
@@ -31,7 +31,7 @@ import (
type FileNoopRelease struct{}
// Release is a no-op.
-func (FileNoopRelease) Release() {}
+func (FileNoopRelease) Release(context.Context) {}
// SeekWithDirCursor is used to implement fs.FileOperations.Seek. If dirCursor
// is not nil and the seek was on a directory, the cursor will be updated.
@@ -296,7 +296,7 @@ func (sdfo *StaticDirFileOperations) IterateDir(ctx context.Context, d *fs.Diren
func (sdfo *StaticDirFileOperations) Readdir(ctx context.Context, file *fs.File, serializer fs.DentrySerializer) (int64, error) {
root := fs.RootFromContext(ctx)
if root != nil {
- defer root.DecRef()
+ defer root.DecRef(ctx)
}
dirCtx := &fs.DirCtx{
Serializer: serializer,
diff --git a/pkg/sentry/fs/gofer/file.go b/pkg/sentry/fs/gofer/file.go
index b2fcab127..c0bc63a32 100644
--- a/pkg/sentry/fs/gofer/file.go
+++ b/pkg/sentry/fs/gofer/file.go
@@ -114,7 +114,7 @@ func NewFile(ctx context.Context, dirent *fs.Dirent, name string, flags fs.FileF
}
// Release implements fs.FileOpeations.Release.
-func (f *fileOperations) Release() {
+func (f *fileOperations) Release(context.Context) {
f.handles.DecRef()
}
@@ -122,7 +122,7 @@ func (f *fileOperations) Release() {
func (f *fileOperations) Readdir(ctx context.Context, file *fs.File, serializer fs.DentrySerializer) (int64, error) {
root := fs.RootFromContext(ctx)
if root != nil {
- defer root.DecRef()
+ defer root.DecRef(ctx)
}
dirCtx := &fs.DirCtx{
diff --git a/pkg/sentry/fs/gofer/handles.go b/pkg/sentry/fs/gofer/handles.go
index fc14249be..f324dbf26 100644
--- a/pkg/sentry/fs/gofer/handles.go
+++ b/pkg/sentry/fs/gofer/handles.go
@@ -47,7 +47,8 @@ type handles struct {
// DecRef drops a reference on handles.
func (h *handles) DecRef() {
- h.DecRefWithDestructor(func() {
+ ctx := context.Background()
+ h.DecRefWithDestructor(ctx, func(context.Context) {
if h.Host != nil {
if h.isHostBorrowed {
h.Host.Release()
@@ -57,7 +58,7 @@ func (h *handles) DecRef() {
}
}
}
- if err := h.File.close(context.Background()); err != nil {
+ if err := h.File.close(ctx); err != nil {
log.Warningf("error closing p9 file: %v", err)
}
})
diff --git a/pkg/sentry/fs/gofer/inode.go b/pkg/sentry/fs/gofer/inode.go
index 51d7368a1..3a225fd39 100644
--- a/pkg/sentry/fs/gofer/inode.go
+++ b/pkg/sentry/fs/gofer/inode.go
@@ -441,8 +441,9 @@ func (i *inodeOperations) Release(ctx context.Context) {
// asynchronously.
//
// We use AsyncWithContext to avoid needing to allocate an extra
- // anonymous function on the heap.
- fs.AsyncWithContext(ctx, i.fileState.Release)
+ // anonymous function on the heap. We must use background context
+ // because the async work cannot happen on the task context.
+ fs.AsyncWithContext(context.Background(), i.fileState.Release)
}
// Mappable implements fs.InodeOperations.Mappable.
diff --git a/pkg/sentry/fs/gofer/path.go b/pkg/sentry/fs/gofer/path.go
index cf9800100..3c66dc3c2 100644
--- a/pkg/sentry/fs/gofer/path.go
+++ b/pkg/sentry/fs/gofer/path.go
@@ -168,7 +168,7 @@ func (i *inodeOperations) Create(ctx context.Context, dir *fs.Inode, name string
// Construct the positive Dirent.
d := fs.NewDirent(ctx, fs.NewInode(ctx, iops, dir.MountSource, sattr), name)
- defer d.DecRef()
+ defer d.DecRef(ctx)
// Construct the new file, caching the handles if allowed.
h := handles{
@@ -371,7 +371,7 @@ func (i *inodeOperations) Remove(ctx context.Context, dir *fs.Inode, name string
// Find out if file being deleted is a socket or pipe that needs to be
// removed from endpoint map.
if d, err := i.Lookup(ctx, dir, name); err == nil {
- defer d.DecRef()
+ defer d.DecRef(ctx)
if fs.IsSocket(d.Inode.StableAttr) || fs.IsPipe(d.Inode.StableAttr) {
switch iops := d.Inode.InodeOperations.(type) {
@@ -392,7 +392,7 @@ func (i *inodeOperations) Remove(ctx context.Context, dir *fs.Inode, name string
return err
}
if key != nil {
- i.session().overrides.remove(*key)
+ i.session().overrides.remove(ctx, *key)
}
i.touchModificationAndStatusChangeTime(ctx, dir)
diff --git a/pkg/sentry/fs/gofer/session.go b/pkg/sentry/fs/gofer/session.go
index b5efc86f2..7cf3522ff 100644
--- a/pkg/sentry/fs/gofer/session.go
+++ b/pkg/sentry/fs/gofer/session.go
@@ -89,10 +89,10 @@ func (e *overrideMaps) addPipe(key device.MultiDeviceKey, d *fs.Dirent, inode *f
// remove deletes the key from the maps.
//
// Precondition: maps must have been locked with 'lock'.
-func (e *overrideMaps) remove(key device.MultiDeviceKey) {
+func (e *overrideMaps) remove(ctx context.Context, key device.MultiDeviceKey) {
endpoint := e.keyMap[key]
delete(e.keyMap, key)
- endpoint.dirent.DecRef()
+ endpoint.dirent.DecRef(ctx)
}
// lock blocks other addition and removal operations from happening while
@@ -197,7 +197,7 @@ type session struct {
}
// Destroy tears down the session.
-func (s *session) Destroy() {
+func (s *session) Destroy(ctx context.Context) {
s.client.Close()
}
@@ -329,7 +329,7 @@ func Root(ctx context.Context, dev string, filesystem fs.Filesystem, superBlockF
s.client, err = p9.NewClient(conn, s.msize, s.version)
if err != nil {
// Drop our reference on the session, it needs to be torn down.
- s.DecRef()
+ s.DecRef(ctx)
return nil, err
}
@@ -340,7 +340,7 @@ func Root(ctx context.Context, dev string, filesystem fs.Filesystem, superBlockF
ctx.UninterruptibleSleepFinish(false)
if err != nil {
// Same as above.
- s.DecRef()
+ s.DecRef(ctx)
return nil, err
}
@@ -348,7 +348,7 @@ func Root(ctx context.Context, dev string, filesystem fs.Filesystem, superBlockF
if err != nil {
s.attach.close(ctx)
// Same as above, but after we execute the Close request.
- s.DecRef()
+ s.DecRef(ctx)
return nil, err
}
@@ -393,13 +393,13 @@ func (s *session) fillKeyMap(ctx context.Context) error {
// fillPathMap populates paths for overrides from dirents in direntMap
// before save.
-func (s *session) fillPathMap() error {
+func (s *session) fillPathMap(ctx context.Context) error {
unlock := s.overrides.lock()
defer unlock()
for _, endpoint := range s.overrides.keyMap {
mountRoot := endpoint.dirent.MountRoot()
- defer mountRoot.DecRef()
+ defer mountRoot.DecRef(ctx)
dirPath, _ := endpoint.dirent.FullName(mountRoot)
if dirPath == "" {
return fmt.Errorf("error getting path from dirent")
diff --git a/pkg/sentry/fs/gofer/session_state.go b/pkg/sentry/fs/gofer/session_state.go
index 2d398b753..48b423dd8 100644
--- a/pkg/sentry/fs/gofer/session_state.go
+++ b/pkg/sentry/fs/gofer/session_state.go
@@ -26,7 +26,8 @@ import (
// beforeSave is invoked by stateify.
func (s *session) beforeSave() {
if s.overrides != nil {
- if err := s.fillPathMap(); err != nil {
+ ctx := &dummyClockContext{context.Background()}
+ if err := s.fillPathMap(ctx); err != nil {
panic("failed to save paths to override map before saving" + err.Error())
}
}
diff --git a/pkg/sentry/fs/gofer/socket.go b/pkg/sentry/fs/gofer/socket.go
index 40f2c1cad..8a1c69ac2 100644
--- a/pkg/sentry/fs/gofer/socket.go
+++ b/pkg/sentry/fs/gofer/socket.go
@@ -134,14 +134,14 @@ func (e *endpoint) UnidirectionalConnect(ctx context.Context) (transport.Connect
// We don't need the receiver.
c.CloseRecv()
- c.Release()
+ c.Release(ctx)
return c, nil
}
// Release implements transport.BoundEndpoint.Release.
-func (e *endpoint) Release() {
- e.inode.DecRef()
+func (e *endpoint) Release(ctx context.Context) {
+ e.inode.DecRef(ctx)
}
// Passcred implements transport.BoundEndpoint.Passcred.
diff --git a/pkg/sentry/fs/host/control.go b/pkg/sentry/fs/host/control.go
index 39299b7e4..0d8d36afa 100644
--- a/pkg/sentry/fs/host/control.go
+++ b/pkg/sentry/fs/host/control.go
@@ -57,7 +57,7 @@ func (c *scmRights) Clone() transport.RightsControlMessage {
}
// Release implements transport.RightsControlMessage.Release.
-func (c *scmRights) Release() {
+func (c *scmRights) Release(ctx context.Context) {
for _, fd := range c.fds {
syscall.Close(fd)
}
diff --git a/pkg/sentry/fs/host/file.go b/pkg/sentry/fs/host/file.go
index 3e48b8b2c..86d1a87f0 100644
--- a/pkg/sentry/fs/host/file.go
+++ b/pkg/sentry/fs/host/file.go
@@ -110,7 +110,7 @@ func newFileFromDonatedFD(ctx context.Context, donated int, saveable, isTTY bool
name := fmt.Sprintf("host:[%d]", inode.StableAttr.InodeID)
dirent := fs.NewDirent(ctx, inode, name)
- defer dirent.DecRef()
+ defer dirent.DecRef(ctx)
if isTTY {
return newTTYFile(ctx, dirent, flags, iops), nil
@@ -169,7 +169,7 @@ func (f *fileOperations) Readiness(mask waiter.EventMask) waiter.EventMask {
func (f *fileOperations) Readdir(ctx context.Context, file *fs.File, serializer fs.DentrySerializer) (int64, error) {
root := fs.RootFromContext(ctx)
if root != nil {
- defer root.DecRef()
+ defer root.DecRef(ctx)
}
dirCtx := &fs.DirCtx{
Serializer: serializer,
diff --git a/pkg/sentry/fs/host/socket.go b/pkg/sentry/fs/host/socket.go
index cfb089e43..a2f3d5918 100644
--- a/pkg/sentry/fs/host/socket.go
+++ b/pkg/sentry/fs/host/socket.go
@@ -194,7 +194,7 @@ func newSocket(ctx context.Context, orgfd int, saveable bool) (*fs.File, error)
}
// Send implements transport.ConnectedEndpoint.Send.
-func (c *ConnectedEndpoint) Send(data [][]byte, controlMessages transport.ControlMessages, from tcpip.FullAddress) (int64, bool, *syserr.Error) {
+func (c *ConnectedEndpoint) Send(ctx context.Context, data [][]byte, controlMessages transport.ControlMessages, from tcpip.FullAddress) (int64, bool, *syserr.Error) {
c.mu.RLock()
defer c.mu.RUnlock()
@@ -271,7 +271,7 @@ func (c *ConnectedEndpoint) EventUpdate() {
}
// Recv implements transport.Receiver.Recv.
-func (c *ConnectedEndpoint) Recv(data [][]byte, creds bool, numRights int, peek bool) (int64, int64, transport.ControlMessages, bool, tcpip.FullAddress, bool, *syserr.Error) {
+func (c *ConnectedEndpoint) Recv(ctx context.Context, data [][]byte, creds bool, numRights int, peek bool) (int64, int64, transport.ControlMessages, bool, tcpip.FullAddress, bool, *syserr.Error) {
c.mu.RLock()
defer c.mu.RUnlock()
@@ -318,7 +318,7 @@ func (c *ConnectedEndpoint) Recv(data [][]byte, creds bool, numRights int, peek
}
// close releases all resources related to the endpoint.
-func (c *ConnectedEndpoint) close() {
+func (c *ConnectedEndpoint) close(context.Context) {
fdnotifier.RemoveFD(int32(c.file.FD()))
c.file.Close()
c.file = nil
@@ -374,8 +374,8 @@ func (c *ConnectedEndpoint) RecvMaxQueueSize() int64 {
}
// Release implements transport.ConnectedEndpoint.Release and transport.Receiver.Release.
-func (c *ConnectedEndpoint) Release() {
- c.ref.DecRefWithDestructor(c.close)
+func (c *ConnectedEndpoint) Release(ctx context.Context) {
+ c.ref.DecRefWithDestructor(ctx, c.close)
}
// CloseUnread implements transport.ConnectedEndpoint.CloseUnread.
diff --git a/pkg/sentry/fs/host/tty.go b/pkg/sentry/fs/host/tty.go
index 82a02fcb2..b5229098c 100644
--- a/pkg/sentry/fs/host/tty.go
+++ b/pkg/sentry/fs/host/tty.go
@@ -113,12 +113,12 @@ func (t *TTYFileOperations) Write(ctx context.Context, file *fs.File, src userme
}
// Release implements fs.FileOperations.Release.
-func (t *TTYFileOperations) Release() {
+func (t *TTYFileOperations) Release(ctx context.Context) {
t.mu.Lock()
t.fgProcessGroup = nil
t.mu.Unlock()
- t.fileOperations.Release()
+ t.fileOperations.Release(ctx)
}
// Ioctl implements fs.FileOperations.Ioctl.
diff --git a/pkg/sentry/fs/inode.go b/pkg/sentry/fs/inode.go
index a34fbc946..b79cd9877 100644
--- a/pkg/sentry/fs/inode.go
+++ b/pkg/sentry/fs/inode.go
@@ -96,13 +96,12 @@ func NewInode(ctx context.Context, iops InodeOperations, msrc *MountSource, satt
}
// DecRef drops a reference on the Inode.
-func (i *Inode) DecRef() {
- i.DecRefWithDestructor(i.destroy)
+func (i *Inode) DecRef(ctx context.Context) {
+ i.DecRefWithDestructor(ctx, i.destroy)
}
// destroy releases the Inode and releases the msrc reference taken.
-func (i *Inode) destroy() {
- ctx := context.Background()
+func (i *Inode) destroy(ctx context.Context) {
if err := i.WriteOut(ctx); err != nil {
// FIXME(b/65209558): Mark as warning again once noatime is
// properly supported.
@@ -122,12 +121,12 @@ func (i *Inode) destroy() {
i.Watches.targetDestroyed()
if i.overlay != nil {
- i.overlay.release()
+ i.overlay.release(ctx)
} else {
i.InodeOperations.Release(ctx)
}
- i.MountSource.DecRef()
+ i.MountSource.DecRef(ctx)
}
// Mappable calls i.InodeOperations.Mappable.
diff --git a/pkg/sentry/fs/inode_inotify.go b/pkg/sentry/fs/inode_inotify.go
index efd3c962b..9911a00c2 100644
--- a/pkg/sentry/fs/inode_inotify.go
+++ b/pkg/sentry/fs/inode_inotify.go
@@ -17,6 +17,7 @@ package fs
import (
"fmt"
+ "gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/sync"
)
@@ -136,11 +137,11 @@ func (w *Watches) Notify(name string, events, cookie uint32) {
}
// Unpin unpins dirent from all watches in this set.
-func (w *Watches) Unpin(d *Dirent) {
+func (w *Watches) Unpin(ctx context.Context, d *Dirent) {
w.mu.RLock()
defer w.mu.RUnlock()
for _, watch := range w.ws {
- watch.Unpin(d)
+ watch.Unpin(ctx, d)
}
}
diff --git a/pkg/sentry/fs/inode_overlay.go b/pkg/sentry/fs/inode_overlay.go
index 537c8d257..dc2e353d9 100644
--- a/pkg/sentry/fs/inode_overlay.go
+++ b/pkg/sentry/fs/inode_overlay.go
@@ -85,7 +85,7 @@ func overlayLookup(ctx context.Context, parent *overlayEntry, inode *Inode, name
upperInode = child.Inode
upperInode.IncRef()
}
- child.DecRef()
+ child.DecRef(ctx)
}
// Are we done?
@@ -108,7 +108,7 @@ func overlayLookup(ctx context.Context, parent *overlayEntry, inode *Inode, name
entry, err := newOverlayEntry(ctx, upperInode, nil, false)
if err != nil {
// Don't leak resources.
- upperInode.DecRef()
+ upperInode.DecRef(ctx)
parent.copyMu.RUnlock()
return nil, false, err
}
@@ -129,7 +129,7 @@ func overlayLookup(ctx context.Context, parent *overlayEntry, inode *Inode, name
if err != nil && err != syserror.ENOENT {
// Don't leak resources.
if upperInode != nil {
- upperInode.DecRef()
+ upperInode.DecRef(ctx)
}
parent.copyMu.RUnlock()
return nil, false, err
@@ -152,7 +152,7 @@ func overlayLookup(ctx context.Context, parent *overlayEntry, inode *Inode, name
}
}
}
- child.DecRef()
+ child.DecRef(ctx)
}
}
@@ -183,7 +183,7 @@ func overlayLookup(ctx context.Context, parent *overlayEntry, inode *Inode, name
// unnecessary because we don't need to copy-up and we will always
// operate (e.g. read/write) on the upper Inode.
if !IsDir(upperInode.StableAttr) {
- lowerInode.DecRef()
+ lowerInode.DecRef(ctx)
lowerInode = nil
}
}
@@ -194,10 +194,10 @@ func overlayLookup(ctx context.Context, parent *overlayEntry, inode *Inode, name
// Well, not quite, we failed at the last moment, how depressing.
// Be sure not to leak resources.
if upperInode != nil {
- upperInode.DecRef()
+ upperInode.DecRef(ctx)
}
if lowerInode != nil {
- lowerInode.DecRef()
+ lowerInode.DecRef(ctx)
}
parent.copyMu.RUnlock()
return nil, false, err
@@ -248,7 +248,7 @@ func overlayCreate(ctx context.Context, o *overlayEntry, parent *Dirent, name st
// user) will clobber the real path for the underlying Inode.
upperFile.Dirent.Inode.IncRef()
upperDirent := NewTransientDirent(upperFile.Dirent.Inode)
- upperFile.Dirent.DecRef()
+ upperFile.Dirent.DecRef(ctx)
upperFile.Dirent = upperDirent
// Create the overlay inode and dirent. We need this to construct the
@@ -259,7 +259,7 @@ func overlayCreate(ctx context.Context, o *overlayEntry, parent *Dirent, name st
// The overlay file created below with NewFile will take a reference on
// the overlayDirent, and it should be the only thing holding a
// reference at the time of creation, so we must drop this reference.
- defer overlayDirent.DecRef()
+ defer overlayDirent.DecRef(ctx)
// Create a new overlay file that wraps the upper file.
flags.Pread = upperFile.Flags().Pread
@@ -399,7 +399,7 @@ func overlayRename(ctx context.Context, o *overlayEntry, oldParent *Dirent, rena
if !replaced.IsNegative() && IsDir(replaced.Inode.StableAttr) {
children, err := readdirOne(ctx, replaced)
if err != nil {
- replaced.DecRef()
+ replaced.DecRef(ctx)
return err
}
@@ -407,12 +407,12 @@ func overlayRename(ctx context.Context, o *overlayEntry, oldParent *Dirent, rena
// included among the returned children, so we don't
// need to bother checking for them.
if len(children) > 0 {
- replaced.DecRef()
+ replaced.DecRef(ctx)
return syserror.ENOTEMPTY
}
}
- replaced.DecRef()
+ replaced.DecRef(ctx)
}
}
@@ -455,12 +455,12 @@ func overlayBind(ctx context.Context, o *overlayEntry, parent *Dirent, name stri
// Grab the inode and drop the dirent, we don't need it.
inode := d.Inode
inode.IncRef()
- d.DecRef()
+ d.DecRef(ctx)
// Create a new overlay entry and dirent for the socket.
entry, err := newOverlayEntry(ctx, inode, nil, false)
if err != nil {
- inode.DecRef()
+ inode.DecRef(ctx)
return nil, err
}
// Use the parent's MountSource, since that corresponds to the overlay,
@@ -672,7 +672,7 @@ func overlayGetlink(ctx context.Context, o *overlayEntry) (*Dirent, error) {
// ground and claim that jumping around the filesystem like this
// is not supported.
name, _ := dirent.FullName(nil)
- dirent.DecRef()
+ dirent.DecRef(ctx)
// Claim that the path is not accessible.
err = syserror.EACCES
diff --git a/pkg/sentry/fs/inotify.go b/pkg/sentry/fs/inotify.go
index e3a715c1f..c5c07d564 100644
--- a/pkg/sentry/fs/inotify.go
+++ b/pkg/sentry/fs/inotify.go
@@ -80,7 +80,7 @@ func NewInotify(ctx context.Context) *Inotify {
// Release implements FileOperations.Release. Release removes all watches and
// frees all resources for an inotify instance.
-func (i *Inotify) Release() {
+func (i *Inotify) Release(ctx context.Context) {
// We need to hold i.mu to avoid a race with concurrent calls to
// Inotify.targetDestroyed from Watches. There's no risk of Watches
// accessing this Inotify after the destructor ends, because we remove all
@@ -93,7 +93,7 @@ func (i *Inotify) Release() {
// the owner's destructor.
w.target.Watches.Remove(w.ID())
// Don't leak any references to the target, held by pins in the watch.
- w.destroy()
+ w.destroy(ctx)
}
}
@@ -321,7 +321,7 @@ func (i *Inotify) AddWatch(target *Dirent, mask uint32) int32 {
//
// RmWatch looks up an inotify watch for the given 'wd' and configures the
// target dirent to stop sending events to this inotify instance.
-func (i *Inotify) RmWatch(wd int32) error {
+func (i *Inotify) RmWatch(ctx context.Context, wd int32) error {
i.mu.Lock()
// Find the watch we were asked to removed.
@@ -346,7 +346,7 @@ func (i *Inotify) RmWatch(wd int32) error {
i.queueEvent(newEvent(watch.wd, "", linux.IN_IGNORED, 0))
// Remove all pins.
- watch.destroy()
+ watch.destroy(ctx)
return nil
}
diff --git a/pkg/sentry/fs/inotify_watch.go b/pkg/sentry/fs/inotify_watch.go
index 900cba3ca..605423d22 100644
--- a/pkg/sentry/fs/inotify_watch.go
+++ b/pkg/sentry/fs/inotify_watch.go
@@ -18,6 +18,7 @@ import (
"sync/atomic"
"gvisor.dev/gvisor/pkg/abi/linux"
+ "gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/sync"
)
@@ -105,12 +106,12 @@ func (w *Watch) Pin(d *Dirent) {
// Unpin drops any extra refs held on dirent due to a previous Pin
// call. Calling Unpin multiple times for the same dirent, or on a dirent
// without a corresponding Pin call is a no-op.
-func (w *Watch) Unpin(d *Dirent) {
+func (w *Watch) Unpin(ctx context.Context, d *Dirent) {
w.mu.Lock()
defer w.mu.Unlock()
if w.pins[d] {
delete(w.pins, d)
- d.DecRef()
+ d.DecRef(ctx)
}
}
@@ -125,11 +126,11 @@ func (w *Watch) TargetDestroyed() {
// this watch. Destroy does not cause any new events to be generated. The caller
// is responsible for ensuring there are no outstanding references to this
// watch.
-func (w *Watch) destroy() {
+func (w *Watch) destroy(ctx context.Context) {
w.mu.Lock()
defer w.mu.Unlock()
for d := range w.pins {
- d.DecRef()
+ d.DecRef(ctx)
}
w.pins = nil
}
diff --git a/pkg/sentry/fs/mount.go b/pkg/sentry/fs/mount.go
index 37bae6810..ee69b10e8 100644
--- a/pkg/sentry/fs/mount.go
+++ b/pkg/sentry/fs/mount.go
@@ -51,7 +51,7 @@ type MountSourceOperations interface {
DirentOperations
// Destroy destroys the MountSource.
- Destroy()
+ Destroy(ctx context.Context)
// Below are MountSourceOperations that do not conform to Linux.
@@ -165,16 +165,16 @@ func (msrc *MountSource) DecDirentRefs() {
}
}
-func (msrc *MountSource) destroy() {
+func (msrc *MountSource) destroy(ctx context.Context) {
if c := msrc.DirentRefs(); c != 0 {
panic(fmt.Sprintf("MountSource with non-zero direntRefs is being destroyed: %d", c))
}
- msrc.MountSourceOperations.Destroy()
+ msrc.MountSourceOperations.Destroy(ctx)
}
// DecRef drops a reference on the MountSource.
-func (msrc *MountSource) DecRef() {
- msrc.DecRefWithDestructor(msrc.destroy)
+func (msrc *MountSource) DecRef(ctx context.Context) {
+ msrc.DecRefWithDestructor(ctx, msrc.destroy)
}
// FlushDirentRefs drops all references held by the MountSource on Dirents.
@@ -264,7 +264,7 @@ func (*SimpleMountSourceOperations) ResetInodeMappings() {}
func (*SimpleMountSourceOperations) SaveInodeMapping(*Inode, string) {}
// Destroy implements MountSourceOperations.Destroy.
-func (*SimpleMountSourceOperations) Destroy() {}
+func (*SimpleMountSourceOperations) Destroy(context.Context) {}
// Info defines attributes of a filesystem.
type Info struct {
diff --git a/pkg/sentry/fs/mount_overlay.go b/pkg/sentry/fs/mount_overlay.go
index 78e35b1e6..7badc75d6 100644
--- a/pkg/sentry/fs/mount_overlay.go
+++ b/pkg/sentry/fs/mount_overlay.go
@@ -115,9 +115,9 @@ func (o *overlayMountSourceOperations) SaveInodeMapping(inode *Inode, path strin
}
// Destroy drops references on the upper and lower MountSource.
-func (o *overlayMountSourceOperations) Destroy() {
- o.upper.DecRef()
- o.lower.DecRef()
+func (o *overlayMountSourceOperations) Destroy(ctx context.Context) {
+ o.upper.DecRef(ctx)
+ o.lower.DecRef(ctx)
}
// type overlayFilesystem is the filesystem for overlay mounts.
diff --git a/pkg/sentry/fs/mounts.go b/pkg/sentry/fs/mounts.go
index 3f2bd0e87..d741c4339 100644
--- a/pkg/sentry/fs/mounts.go
+++ b/pkg/sentry/fs/mounts.go
@@ -234,7 +234,7 @@ func (mns *MountNamespace) flushMountSourceRefsLocked() {
// After destroy is called, the MountNamespace may continue to be referenced (for
// example via /proc/mounts), but should free all resources and shouldn't have
// Find* methods called.
-func (mns *MountNamespace) destroy() {
+func (mns *MountNamespace) destroy(ctx context.Context) {
mns.mu.Lock()
defer mns.mu.Unlock()
@@ -247,13 +247,13 @@ func (mns *MountNamespace) destroy() {
for _, mp := range mns.mounts {
// Drop the mount reference on all mounted dirents.
for ; mp != nil; mp = mp.previous {
- mp.root.DecRef()
+ mp.root.DecRef(ctx)
}
}
mns.mounts = nil
// Drop reference on the root.
- mns.root.DecRef()
+ mns.root.DecRef(ctx)
// Ensure that root cannot be accessed via this MountNamespace any
// more.
@@ -265,8 +265,8 @@ func (mns *MountNamespace) destroy() {
}
// DecRef implements RefCounter.DecRef with destructor mns.destroy.
-func (mns *MountNamespace) DecRef() {
- mns.DecRefWithDestructor(mns.destroy)
+func (mns *MountNamespace) DecRef(ctx context.Context) {
+ mns.DecRefWithDestructor(ctx, mns.destroy)
}
// withMountLocked prevents further walks to `node`, because `node` is about to
@@ -312,7 +312,7 @@ func (mns *MountNamespace) Mount(ctx context.Context, mountPoint *Dirent, inode
if err != nil {
return err
}
- defer replacement.DecRef()
+ defer replacement.DecRef(ctx)
// Set the mount's root dirent and id.
parentMnt := mns.findMountLocked(mountPoint)
@@ -394,7 +394,7 @@ func (mns *MountNamespace) Unmount(ctx context.Context, node *Dirent, detachOnly
panic(fmt.Sprintf("Last mount in the chain must be a undo mount: %+v", prev))
}
// Drop mount reference taken at the end of MountNamespace.Mount.
- prev.root.DecRef()
+ prev.root.DecRef(ctx)
} else {
mns.mounts[prev.root] = prev
}
@@ -496,11 +496,11 @@ func (mns *MountNamespace) FindLink(ctx context.Context, root, wd *Dirent, path
// non-directory root is hopeless.
if current != root {
if !IsDir(current.Inode.StableAttr) {
- current.DecRef() // Drop reference from above.
+ current.DecRef(ctx) // Drop reference from above.
return nil, syserror.ENOTDIR
}
if err := current.Inode.CheckPermission(ctx, PermMask{Execute: true}); err != nil {
- current.DecRef() // Drop reference from above.
+ current.DecRef(ctx) // Drop reference from above.
return nil, err
}
}
@@ -511,12 +511,12 @@ func (mns *MountNamespace) FindLink(ctx context.Context, root, wd *Dirent, path
// Allow failed walks to cache the dirent, because no
// children will acquire a reference at the end.
current.maybeExtendReference()
- current.DecRef()
+ current.DecRef(ctx)
return nil, err
}
// Drop old reference.
- current.DecRef()
+ current.DecRef(ctx)
if remainder != "" {
// Ensure it's resolved, unless it's the last level.
@@ -570,11 +570,11 @@ func (mns *MountNamespace) resolve(ctx context.Context, root, node *Dirent, rema
case nil:
// Make sure we didn't exhaust the traversal budget.
if *remainingTraversals == 0 {
- target.DecRef()
+ target.DecRef(ctx)
return nil, syscall.ELOOP
}
- node.DecRef() // Drop the original reference.
+ node.DecRef(ctx) // Drop the original reference.
return target, nil
case syscall.ENOLINK:
@@ -582,7 +582,7 @@ func (mns *MountNamespace) resolve(ctx context.Context, root, node *Dirent, rema
return node, nil
case ErrResolveViaReadlink:
- defer node.DecRef() // See above.
+ defer node.DecRef(ctx) // See above.
// First, check if we should traverse.
if *remainingTraversals == 0 {
@@ -608,7 +608,7 @@ func (mns *MountNamespace) resolve(ctx context.Context, root, node *Dirent, rema
return d, err
default:
- node.DecRef() // Drop for err; see above.
+ node.DecRef(ctx) // Drop for err; see above.
// Propagate the error.
return nil, err
diff --git a/pkg/sentry/fs/overlay.go b/pkg/sentry/fs/overlay.go
index a8ae7d81d..35013a21b 100644
--- a/pkg/sentry/fs/overlay.go
+++ b/pkg/sentry/fs/overlay.go
@@ -107,7 +107,7 @@ func NewOverlayRoot(ctx context.Context, upper *Inode, lower *Inode, flags Mount
msrc := newOverlayMountSource(ctx, upper.MountSource, lower.MountSource, flags)
overlay, err := newOverlayEntry(ctx, upper, lower, true)
if err != nil {
- msrc.DecRef()
+ msrc.DecRef(ctx)
return nil, err
}
@@ -130,7 +130,7 @@ func NewOverlayRootFile(ctx context.Context, upperMS *MountSource, lower *Inode,
msrc := newOverlayMountSource(ctx, upperMS, lower.MountSource, flags)
overlay, err := newOverlayEntry(ctx, nil, lower, true)
if err != nil {
- msrc.DecRef()
+ msrc.DecRef(ctx)
return nil, err
}
return newOverlayInode(ctx, overlay, msrc), nil
@@ -230,16 +230,16 @@ func newOverlayEntry(ctx context.Context, upper *Inode, lower *Inode, lowerExist
}, nil
}
-func (o *overlayEntry) release() {
+func (o *overlayEntry) release(ctx context.Context) {
// We drop a reference on upper and lower file system Inodes
// rather than releasing them, because in-memory filesystems
// may hold an extra reference to these Inodes so that they
// stay in memory.
if o.upper != nil {
- o.upper.DecRef()
+ o.upper.DecRef(ctx)
}
if o.lower != nil {
- o.lower.DecRef()
+ o.lower.DecRef(ctx)
}
}
diff --git a/pkg/sentry/fs/proc/fds.go b/pkg/sentry/fs/proc/fds.go
index 35972e23c..45523adf8 100644
--- a/pkg/sentry/fs/proc/fds.go
+++ b/pkg/sentry/fs/proc/fds.go
@@ -56,11 +56,11 @@ func walkDescriptors(t *kernel.Task, p string, toInode func(*fs.File, kernel.FDF
// readDescriptors reads fds in the task starting at offset, and calls the
// toDentAttr callback for each to get a DentAttr, which it then emits. This is
// a helper for implementing fs.InodeOperations.Readdir.
-func readDescriptors(t *kernel.Task, c *fs.DirCtx, offset int64, toDentAttr func(int) fs.DentAttr) (int64, error) {
+func readDescriptors(ctx context.Context, t *kernel.Task, c *fs.DirCtx, offset int64, toDentAttr func(int) fs.DentAttr) (int64, error) {
var fds []int32
t.WithMuLocked(func(t *kernel.Task) {
if fdTable := t.FDTable(); fdTable != nil {
- fds = fdTable.GetFDs()
+ fds = fdTable.GetFDs(ctx)
}
})
@@ -116,7 +116,7 @@ func (f *fd) GetFile(context.Context, *fs.Dirent, fs.FileFlags) (*fs.File, error
func (f *fd) Readlink(ctx context.Context, _ *fs.Inode) (string, error) {
root := fs.RootFromContext(ctx)
if root != nil {
- defer root.DecRef()
+ defer root.DecRef(ctx)
}
n, _ := f.file.Dirent.FullName(root)
return n, nil
@@ -135,13 +135,7 @@ func (f *fd) Truncate(context.Context, *fs.Inode, int64) error {
func (f *fd) Release(ctx context.Context) {
f.Symlink.Release(ctx)
- f.file.DecRef()
-}
-
-// Close releases the reference on the file.
-func (f *fd) Close() error {
- f.file.DecRef()
- return nil
+ f.file.DecRef(ctx)
}
// fdDir is an InodeOperations for /proc/TID/fd.
@@ -227,7 +221,7 @@ func (f *fdDirFile) Readdir(ctx context.Context, file *fs.File, ser fs.DentrySer
if f.isInfoFile {
typ = fs.Symlink
}
- return readDescriptors(f.t, dirCtx, file.Offset(), func(fd int) fs.DentAttr {
+ return readDescriptors(ctx, f.t, dirCtx, file.Offset(), func(fd int) fs.DentAttr {
return fs.GenericDentAttr(typ, device.ProcDevice)
})
}
@@ -261,7 +255,7 @@ func (fdid *fdInfoDir) Lookup(ctx context.Context, dir *fs.Inode, p string) (*fs
// locks, and other data. For now we only have flags.
// See https://www.kernel.org/doc/Documentation/filesystems/proc.txt
flags := file.Flags().ToLinux() | fdFlags.ToLinuxFileFlags()
- file.DecRef()
+ file.DecRef(ctx)
contents := []byte(fmt.Sprintf("flags:\t0%o\n", flags))
return newStaticProcInode(ctx, dir.MountSource, contents)
})
diff --git a/pkg/sentry/fs/proc/mounts.go b/pkg/sentry/fs/proc/mounts.go
index 1fc9c703c..6a63c47b3 100644
--- a/pkg/sentry/fs/proc/mounts.go
+++ b/pkg/sentry/fs/proc/mounts.go
@@ -47,7 +47,7 @@ func forEachMount(t *kernel.Task, fn func(string, *fs.Mount)) {
// The task has been destroyed. Nothing to show here.
return
}
- defer rootDir.DecRef()
+ defer rootDir.DecRef(t)
mnt := t.MountNamespace().FindMount(rootDir)
if mnt == nil {
@@ -64,7 +64,7 @@ func forEachMount(t *kernel.Task, fn func(string, *fs.Mount)) {
continue // No longer valid.
}
mountPath, desc := mroot.FullName(rootDir)
- mroot.DecRef()
+ mroot.DecRef(t)
if !desc {
// MountSources that are not descendants of the chroot jail are ignored.
continue
@@ -97,7 +97,7 @@ func (mif *mountInfoFile) ReadSeqFileData(ctx context.Context, handle seqfile.Se
if mroot == nil {
return // No longer valid.
}
- defer mroot.DecRef()
+ defer mroot.DecRef(ctx)
// Format:
// 36 35 98:0 /mnt1 /mnt2 rw,noatime master:1 - ext3 /dev/root rw,errors=continue
@@ -216,7 +216,7 @@ func (mf *mountsFile) ReadSeqFileData(ctx context.Context, handle seqfile.SeqHan
if root == nil {
return // No longer valid.
}
- defer root.DecRef()
+ defer root.DecRef(ctx)
flags := root.Inode.MountSource.Flags
opts := "rw"
diff --git a/pkg/sentry/fs/proc/net.go b/pkg/sentry/fs/proc/net.go
index bd18177d4..83a43aa26 100644
--- a/pkg/sentry/fs/proc/net.go
+++ b/pkg/sentry/fs/proc/net.go
@@ -419,7 +419,7 @@ func (n *netUnix) ReadSeqFileData(ctx context.Context, h seqfile.SeqHandle) ([]s
}
sfile := s.(*fs.File)
if family, _, _ := sfile.FileOperations.(socket.Socket).Type(); family != linux.AF_UNIX {
- s.DecRef()
+ s.DecRef(ctx)
// Not a unix socket.
continue
}
@@ -479,7 +479,7 @@ func (n *netUnix) ReadSeqFileData(ctx context.Context, h seqfile.SeqHandle) ([]s
}
fmt.Fprintf(&buf, "\n")
- s.DecRef()
+ s.DecRef(ctx)
}
data := []seqfile.SeqData{
@@ -574,7 +574,7 @@ func commonReadSeqFileDataTCP(ctx context.Context, n seqfile.SeqHandle, k *kerne
panic(fmt.Sprintf("Found non-socket file in socket table: %+v", sfile))
}
if family, stype, _ := sops.Type(); !(family == fa && stype == linux.SOCK_STREAM) {
- s.DecRef()
+ s.DecRef(ctx)
// Not tcp4 sockets.
continue
}
@@ -664,7 +664,7 @@ func commonReadSeqFileDataTCP(ctx context.Context, n seqfile.SeqHandle, k *kerne
fmt.Fprintf(&buf, "\n")
- s.DecRef()
+ s.DecRef(ctx)
}
data := []seqfile.SeqData{
@@ -752,7 +752,7 @@ func (n *netUDP) ReadSeqFileData(ctx context.Context, h seqfile.SeqHandle) ([]se
panic(fmt.Sprintf("Found non-socket file in socket table: %+v", sfile))
}
if family, stype, _ := sops.Type(); family != linux.AF_INET || stype != linux.SOCK_DGRAM {
- s.DecRef()
+ s.DecRef(ctx)
// Not udp4 socket.
continue
}
@@ -822,7 +822,7 @@ func (n *netUDP) ReadSeqFileData(ctx context.Context, h seqfile.SeqHandle) ([]se
fmt.Fprintf(&buf, "\n")
- s.DecRef()
+ s.DecRef(ctx)
}
data := []seqfile.SeqData{
diff --git a/pkg/sentry/fs/proc/proc.go b/pkg/sentry/fs/proc/proc.go
index c659224a7..77e0e1d26 100644
--- a/pkg/sentry/fs/proc/proc.go
+++ b/pkg/sentry/fs/proc/proc.go
@@ -213,7 +213,7 @@ func (rpf *rootProcFile) Readdir(ctx context.Context, file *fs.File, ser fs.Dent
// Add dot and dotdot.
root := fs.RootFromContext(ctx)
if root != nil {
- defer root.DecRef()
+ defer root.DecRef(ctx)
}
dot, dotdot := file.Dirent.GetDotAttrs(root)
names = append(names, ".", "..")
diff --git a/pkg/sentry/fs/proc/task.go b/pkg/sentry/fs/proc/task.go
index 4bbe90198..9cf7f2a62 100644
--- a/pkg/sentry/fs/proc/task.go
+++ b/pkg/sentry/fs/proc/task.go
@@ -185,7 +185,7 @@ func (f *subtasksFile) Readdir(ctx context.Context, file *fs.File, ser fs.Dentry
// Serialize "." and "..".
root := fs.RootFromContext(ctx)
if root != nil {
- defer root.DecRef()
+ defer root.DecRef(ctx)
}
dot, dotdot := file.Dirent.GetDotAttrs(root)
if err := dirCtx.DirEmit(".", dot); err != nil {
@@ -295,7 +295,7 @@ func (e *exe) Readlink(ctx context.Context, inode *fs.Inode) (string, error) {
if err != nil {
return "", err
}
- defer exec.DecRef()
+ defer exec.DecRef(ctx)
return exec.PathnameWithDeleted(ctx), nil
}
diff --git a/pkg/sentry/fs/ramfs/dir.go b/pkg/sentry/fs/ramfs/dir.go
index bfa304552..f4fcddecb 100644
--- a/pkg/sentry/fs/ramfs/dir.go
+++ b/pkg/sentry/fs/ramfs/dir.go
@@ -219,7 +219,7 @@ func (d *Dir) Remove(ctx context.Context, _ *fs.Inode, name string) error {
}
// Remove our reference on the inode.
- inode.DecRef()
+ inode.DecRef(ctx)
return nil
}
@@ -250,7 +250,7 @@ func (d *Dir) RemoveDirectory(ctx context.Context, _ *fs.Inode, name string) err
}
// Remove our reference on the inode.
- inode.DecRef()
+ inode.DecRef(ctx)
return nil
}
@@ -326,7 +326,7 @@ func (d *Dir) Create(ctx context.Context, dir *fs.Inode, name string, flags fs.F
// Create the Dirent and corresponding file.
created := fs.NewDirent(ctx, inode, name)
- defer created.DecRef()
+ defer created.DecRef(ctx)
return created.Inode.GetFile(ctx, created, flags)
}
@@ -412,11 +412,11 @@ func (*Dir) Rename(ctx context.Context, inode *fs.Inode, oldParent *fs.Inode, ol
}
// Release implements fs.InodeOperation.Release.
-func (d *Dir) Release(_ context.Context) {
+func (d *Dir) Release(ctx context.Context) {
// Drop references on all children.
d.mu.Lock()
for _, i := range d.children {
- i.DecRef()
+ i.DecRef(ctx)
}
d.mu.Unlock()
}
@@ -456,7 +456,7 @@ func (dfo *dirFileOperations) IterateDir(ctx context.Context, d *fs.Dirent, dirC
func (dfo *dirFileOperations) Readdir(ctx context.Context, file *fs.File, serializer fs.DentrySerializer) (int64, error) {
root := fs.RootFromContext(ctx)
if root != nil {
- defer root.DecRef()
+ defer root.DecRef(ctx)
}
dirCtx := &fs.DirCtx{
Serializer: serializer,
@@ -473,13 +473,13 @@ func hasChildren(ctx context.Context, inode *fs.Inode) (bool, error) {
// dropped when that dirent is destroyed.
inode.IncRef()
d := fs.NewTransientDirent(inode)
- defer d.DecRef()
+ defer d.DecRef(ctx)
file, err := inode.GetFile(ctx, d, fs.FileFlags{Read: true})
if err != nil {
return false, err
}
- defer file.DecRef()
+ defer file.DecRef(ctx)
ser := &fs.CollectEntriesSerializer{}
if err := file.Readdir(ctx, ser); err != nil {
@@ -530,7 +530,7 @@ func Rename(ctx context.Context, oldParent fs.InodeOperations, oldName string, n
if err != nil {
return err
}
- inode.DecRef()
+ inode.DecRef(ctx)
}
// Be careful, we may have already grabbed this mutex above.
diff --git a/pkg/sentry/fs/timerfd/timerfd.go b/pkg/sentry/fs/timerfd/timerfd.go
index 88c344089..f362ca9b6 100644
--- a/pkg/sentry/fs/timerfd/timerfd.go
+++ b/pkg/sentry/fs/timerfd/timerfd.go
@@ -55,7 +55,7 @@ type TimerOperations struct {
func NewFile(ctx context.Context, c ktime.Clock) *fs.File {
dirent := fs.NewDirent(ctx, anon.NewInode(ctx), "anon_inode:[timerfd]")
// Release the initial dirent reference after NewFile takes a reference.
- defer dirent.DecRef()
+ defer dirent.DecRef(ctx)
tops := &TimerOperations{}
tops.timer = ktime.NewTimer(c, tops)
// Timerfds reject writes, but the Write flag must be set in order to
@@ -65,7 +65,7 @@ func NewFile(ctx context.Context, c ktime.Clock) *fs.File {
}
// Release implements fs.FileOperations.Release.
-func (t *TimerOperations) Release() {
+func (t *TimerOperations) Release(context.Context) {
t.timer.Destroy()
}
diff --git a/pkg/sentry/fs/tty/dir.go b/pkg/sentry/fs/tty/dir.go
index 108654827..463f6189e 100644
--- a/pkg/sentry/fs/tty/dir.go
+++ b/pkg/sentry/fs/tty/dir.go
@@ -132,7 +132,7 @@ func (d *dirInodeOperations) Release(ctx context.Context) {
d.mu.Lock()
defer d.mu.Unlock()
- d.master.DecRef()
+ d.master.DecRef(ctx)
if len(d.slaves) != 0 {
panic(fmt.Sprintf("devpts directory still contains active terminals: %+v", d))
}
@@ -263,7 +263,7 @@ func (d *dirInodeOperations) allocateTerminal(ctx context.Context) (*Terminal, e
}
// masterClose is called when the master end of t is closed.
-func (d *dirInodeOperations) masterClose(t *Terminal) {
+func (d *dirInodeOperations) masterClose(ctx context.Context, t *Terminal) {
d.mu.Lock()
defer d.mu.Unlock()
@@ -277,7 +277,7 @@ func (d *dirInodeOperations) masterClose(t *Terminal) {
panic(fmt.Sprintf("Terminal %+v doesn't exist in %+v?", t, d))
}
- s.DecRef()
+ s.DecRef(ctx)
delete(d.slaves, t.n)
d.dentryMap.Remove(strconv.FormatUint(uint64(t.n), 10))
}
@@ -322,7 +322,7 @@ func (df *dirFileOperations) IterateDir(ctx context.Context, d *fs.Dirent, dirCt
func (df *dirFileOperations) Readdir(ctx context.Context, file *fs.File, serializer fs.DentrySerializer) (int64, error) {
root := fs.RootFromContext(ctx)
if root != nil {
- defer root.DecRef()
+ defer root.DecRef(ctx)
}
dirCtx := &fs.DirCtx{
Serializer: serializer,
diff --git a/pkg/sentry/fs/tty/fs.go b/pkg/sentry/fs/tty/fs.go
index 8fe05ebe5..2d4d44bf3 100644
--- a/pkg/sentry/fs/tty/fs.go
+++ b/pkg/sentry/fs/tty/fs.go
@@ -108,4 +108,4 @@ func (superOperations) ResetInodeMappings() {}
func (superOperations) SaveInodeMapping(*fs.Inode, string) {}
// Destroy implements MountSourceOperations.Destroy.
-func (superOperations) Destroy() {}
+func (superOperations) Destroy(context.Context) {}
diff --git a/pkg/sentry/fs/tty/master.go b/pkg/sentry/fs/tty/master.go
index fe07fa929..e00746017 100644
--- a/pkg/sentry/fs/tty/master.go
+++ b/pkg/sentry/fs/tty/master.go
@@ -75,7 +75,7 @@ func newMasterInode(ctx context.Context, d *dirInodeOperations, owner fs.FileOwn
}
// Release implements fs.InodeOperations.Release.
-func (mi *masterInodeOperations) Release(ctx context.Context) {
+func (mi *masterInodeOperations) Release(context.Context) {
}
// Truncate implements fs.InodeOperations.Truncate.
@@ -120,9 +120,9 @@ type masterFileOperations struct {
var _ fs.FileOperations = (*masterFileOperations)(nil)
// Release implements fs.FileOperations.Release.
-func (mf *masterFileOperations) Release() {
- mf.d.masterClose(mf.t)
- mf.t.DecRef()
+func (mf *masterFileOperations) Release(ctx context.Context) {
+ mf.d.masterClose(ctx, mf.t)
+ mf.t.DecRef(ctx)
}
// EventRegister implements waiter.Waitable.EventRegister.
diff --git a/pkg/sentry/fs/tty/slave.go b/pkg/sentry/fs/tty/slave.go
index 9871f6fc6..7c7292687 100644
--- a/pkg/sentry/fs/tty/slave.go
+++ b/pkg/sentry/fs/tty/slave.go
@@ -71,7 +71,7 @@ func newSlaveInode(ctx context.Context, d *dirInodeOperations, t *Terminal, owne
// Release implements fs.InodeOperations.Release.
func (si *slaveInodeOperations) Release(ctx context.Context) {
- si.t.DecRef()
+ si.t.DecRef(ctx)
}
// Truncate implements fs.InodeOperations.Truncate.
@@ -106,7 +106,7 @@ type slaveFileOperations struct {
var _ fs.FileOperations = (*slaveFileOperations)(nil)
// Release implements fs.FileOperations.Release.
-func (sf *slaveFileOperations) Release() {
+func (sf *slaveFileOperations) Release(context.Context) {
}
// EventRegister implements waiter.Waitable.EventRegister.
diff --git a/pkg/sentry/fs/user/path.go b/pkg/sentry/fs/user/path.go
index 397e96045..2f5a43b84 100644
--- a/pkg/sentry/fs/user/path.go
+++ b/pkg/sentry/fs/user/path.go
@@ -82,7 +82,7 @@ func resolve(ctx context.Context, mns *fs.MountNamespace, paths []string, name s
// Caller has no root. Don't bother traversing anything.
return "", syserror.ENOENT
}
- defer root.DecRef()
+ defer root.DecRef(ctx)
for _, p := range paths {
if !path.IsAbs(p) {
// Relative paths aren't safe, no one should be using them.
@@ -100,7 +100,7 @@ func resolve(ctx context.Context, mns *fs.MountNamespace, paths []string, name s
if err != nil {
return "", err
}
- defer d.DecRef()
+ defer d.DecRef(ctx)
// Check that it is a regular file.
if !fs.IsRegular(d.Inode.StableAttr) {
@@ -121,7 +121,7 @@ func resolve(ctx context.Context, mns *fs.MountNamespace, paths []string, name s
func resolveVFS2(ctx context.Context, creds *auth.Credentials, mns *vfs.MountNamespace, paths []string, name string) (string, error) {
root := mns.Root()
- defer root.DecRef()
+ defer root.DecRef(ctx)
for _, p := range paths {
if !path.IsAbs(p) {
// Relative paths aren't safe, no one should be using them.
@@ -148,7 +148,7 @@ func resolveVFS2(ctx context.Context, creds *auth.Credentials, mns *vfs.MountNam
if err != nil {
return "", err
}
- dentry.DecRef()
+ dentry.DecRef(ctx)
return binPath, nil
}
diff --git a/pkg/sentry/fs/user/user.go b/pkg/sentry/fs/user/user.go
index f4d525523..936fd3932 100644
--- a/pkg/sentry/fs/user/user.go
+++ b/pkg/sentry/fs/user/user.go
@@ -62,7 +62,7 @@ func getExecUserHome(ctx context.Context, rootMns *fs.MountNamespace, uid auth.K
// doesn't exist we will return the default home directory.
return defaultHome, nil
}
- defer dirent.DecRef()
+ defer dirent.DecRef(ctx)
// Check read permissions on the file.
if err := dirent.Inode.CheckPermission(ctx, fs.PermMask{Read: true}); err != nil {
@@ -81,7 +81,7 @@ func getExecUserHome(ctx context.Context, rootMns *fs.MountNamespace, uid auth.K
if err != nil {
return "", err
}
- defer f.DecRef()
+ defer f.DecRef(ctx)
r := &fileReader{
Ctx: ctx,
@@ -105,7 +105,7 @@ func getExecUserHomeVFS2(ctx context.Context, mns *vfs.MountNamespace, uid auth.
const defaultHome = "/"
root := mns.Root()
- defer root.DecRef()
+ defer root.DecRef(ctx)
creds := auth.CredentialsFromContext(ctx)
@@ -123,7 +123,7 @@ func getExecUserHomeVFS2(ctx context.Context, mns *vfs.MountNamespace, uid auth.
if err != nil {
return defaultHome, nil
}
- defer fd.DecRef()
+ defer fd.DecRef(ctx)
r := &fileReaderVFS2{
ctx: ctx,
diff --git a/pkg/sentry/fsbridge/bridge.go b/pkg/sentry/fsbridge/bridge.go
index 8e7590721..7e61209ee 100644
--- a/pkg/sentry/fsbridge/bridge.go
+++ b/pkg/sentry/fsbridge/bridge.go
@@ -44,7 +44,7 @@ type File interface {
IncRef()
// DecRef decrements reference.
- DecRef()
+ DecRef(ctx context.Context)
}
// Lookup provides a common interface to open files.
diff --git a/pkg/sentry/fsbridge/fs.go b/pkg/sentry/fsbridge/fs.go
index 093ce1fb3..9785fd62a 100644
--- a/pkg/sentry/fsbridge/fs.go
+++ b/pkg/sentry/fsbridge/fs.go
@@ -49,7 +49,7 @@ func (f *fsFile) PathnameWithDeleted(ctx context.Context) string {
// global there.
return ""
}
- defer root.DecRef()
+ defer root.DecRef(ctx)
name, _ := f.file.Dirent.FullName(root)
return name
@@ -87,8 +87,8 @@ func (f *fsFile) IncRef() {
}
// DecRef implements File.
-func (f *fsFile) DecRef() {
- f.file.DecRef()
+func (f *fsFile) DecRef(ctx context.Context) {
+ f.file.DecRef(ctx)
}
// fsLookup implements Lookup interface using fs.File.
@@ -124,7 +124,7 @@ func (l *fsLookup) OpenPath(ctx context.Context, path string, opts vfs.OpenOptio
if err != nil {
return nil, err
}
- defer d.DecRef()
+ defer d.DecRef(ctx)
if !resolveFinal && fs.IsSymlink(d.Inode.StableAttr) {
return nil, syserror.ELOOP
diff --git a/pkg/sentry/fsbridge/vfs.go b/pkg/sentry/fsbridge/vfs.go
index 89168220a..323506d33 100644
--- a/pkg/sentry/fsbridge/vfs.go
+++ b/pkg/sentry/fsbridge/vfs.go
@@ -43,7 +43,7 @@ func NewVFSFile(file *vfs.FileDescription) File {
// PathnameWithDeleted implements File.
func (f *VFSFile) PathnameWithDeleted(ctx context.Context) string {
root := vfs.RootFromContext(ctx)
- defer root.DecRef()
+ defer root.DecRef(ctx)
vfsObj := f.file.VirtualDentry().Mount().Filesystem().VirtualFilesystem()
name, _ := vfsObj.PathnameWithDeleted(ctx, root, f.file.VirtualDentry())
@@ -86,8 +86,8 @@ func (f *VFSFile) IncRef() {
}
// DecRef implements File.
-func (f *VFSFile) DecRef() {
- f.file.DecRef()
+func (f *VFSFile) DecRef(ctx context.Context) {
+ f.file.DecRef(ctx)
}
// FileDescription returns the FileDescription represented by f. It does not
diff --git a/pkg/sentry/fsimpl/devpts/devpts.go b/pkg/sentry/fsimpl/devpts/devpts.go
index e6fda2b4f..7169e91af 100644
--- a/pkg/sentry/fsimpl/devpts/devpts.go
+++ b/pkg/sentry/fsimpl/devpts/devpts.go
@@ -103,9 +103,9 @@ func (fstype FilesystemType) newFilesystem(vfsObj *vfs.VirtualFilesystem, creds
}
// Release implements vfs.FilesystemImpl.Release.
-func (fs *filesystem) Release() {
+func (fs *filesystem) Release(ctx context.Context) {
fs.Filesystem.VFSFilesystem().VirtualFilesystem().PutAnonBlockDevMinor(fs.devMinor)
- fs.Filesystem.Release()
+ fs.Filesystem.Release(ctx)
}
// rootInode is the root directory inode for the devpts mounts.
diff --git a/pkg/sentry/fsimpl/devpts/master.go b/pkg/sentry/fsimpl/devpts/master.go
index 1081fff52..3bb397f71 100644
--- a/pkg/sentry/fsimpl/devpts/master.go
+++ b/pkg/sentry/fsimpl/devpts/master.go
@@ -60,7 +60,7 @@ func (mi *masterInode) Open(ctx context.Context, rp *vfs.ResolvingPath, vfsd *vf
}
fd.LockFD.Init(&mi.locks)
if err := fd.vfsfd.Init(fd, opts.Flags, rp.Mount(), vfsd, &vfs.FileDescriptionOptions{}); err != nil {
- mi.DecRef()
+ mi.DecRef(ctx)
return nil, err
}
return &fd.vfsfd, nil
@@ -98,9 +98,9 @@ type masterFileDescription struct {
var _ vfs.FileDescriptionImpl = (*masterFileDescription)(nil)
// Release implements vfs.FileDescriptionImpl.Release.
-func (mfd *masterFileDescription) Release() {
+func (mfd *masterFileDescription) Release(ctx context.Context) {
mfd.inode.root.masterClose(mfd.t)
- mfd.inode.DecRef()
+ mfd.inode.DecRef(ctx)
}
// EventRegister implements waiter.Waitable.EventRegister.
diff --git a/pkg/sentry/fsimpl/devpts/slave.go b/pkg/sentry/fsimpl/devpts/slave.go
index a91cae3ef..32e4e1908 100644
--- a/pkg/sentry/fsimpl/devpts/slave.go
+++ b/pkg/sentry/fsimpl/devpts/slave.go
@@ -56,7 +56,7 @@ func (si *slaveInode) Open(ctx context.Context, rp *vfs.ResolvingPath, vfsd *vfs
}
fd.LockFD.Init(&si.locks)
if err := fd.vfsfd.Init(fd, opts.Flags, rp.Mount(), vfsd, &vfs.FileDescriptionOptions{}); err != nil {
- si.DecRef()
+ si.DecRef(ctx)
return nil, err
}
return &fd.vfsfd, nil
@@ -103,8 +103,8 @@ type slaveFileDescription struct {
var _ vfs.FileDescriptionImpl = (*slaveFileDescription)(nil)
// Release implements fs.FileOperations.Release.
-func (sfd *slaveFileDescription) Release() {
- sfd.inode.DecRef()
+func (sfd *slaveFileDescription) Release(ctx context.Context) {
+ sfd.inode.DecRef(ctx)
}
// EventRegister implements waiter.Waitable.EventRegister.
diff --git a/pkg/sentry/fsimpl/devtmpfs/devtmpfs.go b/pkg/sentry/fsimpl/devtmpfs/devtmpfs.go
index d0e06cdc0..2ed5fa8a9 100644
--- a/pkg/sentry/fsimpl/devtmpfs/devtmpfs.go
+++ b/pkg/sentry/fsimpl/devtmpfs/devtmpfs.go
@@ -92,9 +92,9 @@ func NewAccessor(ctx context.Context, vfsObj *vfs.VirtualFilesystem, creds *auth
}
// Release must be called when a is no longer in use.
-func (a *Accessor) Release() {
- a.root.DecRef()
- a.mntns.DecRef()
+func (a *Accessor) Release(ctx context.Context) {
+ a.root.DecRef(ctx)
+ a.mntns.DecRef(ctx)
}
// accessorContext implements context.Context by extending an existing
diff --git a/pkg/sentry/fsimpl/eventfd/eventfd.go b/pkg/sentry/fsimpl/eventfd/eventfd.go
index d12d78b84..812171fa3 100644
--- a/pkg/sentry/fsimpl/eventfd/eventfd.go
+++ b/pkg/sentry/fsimpl/eventfd/eventfd.go
@@ -59,9 +59,9 @@ type EventFileDescription struct {
var _ vfs.FileDescriptionImpl = (*EventFileDescription)(nil)
// New creates a new event fd.
-func New(vfsObj *vfs.VirtualFilesystem, initVal uint64, semMode bool, flags uint32) (*vfs.FileDescription, error) {
+func New(ctx context.Context, vfsObj *vfs.VirtualFilesystem, initVal uint64, semMode bool, flags uint32) (*vfs.FileDescription, error) {
vd := vfsObj.NewAnonVirtualDentry("[eventfd]")
- defer vd.DecRef()
+ defer vd.DecRef(ctx)
efd := &EventFileDescription{
val: initVal,
semMode: semMode,
@@ -107,7 +107,7 @@ func (efd *EventFileDescription) HostFD() (int, error) {
}
// Release implements FileDescriptionImpl.Release()
-func (efd *EventFileDescription) Release() {
+func (efd *EventFileDescription) Release(context.Context) {
efd.mu.Lock()
defer efd.mu.Unlock()
if efd.hostfd >= 0 {
diff --git a/pkg/sentry/fsimpl/fuse/dev.go b/pkg/sentry/fsimpl/fuse/dev.go
index 2225076bc..e522ff9a0 100644
--- a/pkg/sentry/fsimpl/fuse/dev.go
+++ b/pkg/sentry/fsimpl/fuse/dev.go
@@ -99,7 +99,7 @@ type DeviceFD struct {
}
// Release implements vfs.FileDescriptionImpl.Release.
-func (fd *DeviceFD) Release() {
+func (fd *DeviceFD) Release(context.Context) {
fd.fs.conn.connected = false
}
diff --git a/pkg/sentry/fsimpl/fuse/fusefs.go b/pkg/sentry/fsimpl/fuse/fusefs.go
index 200a93bbf..a1405f7c3 100644
--- a/pkg/sentry/fsimpl/fuse/fusefs.go
+++ b/pkg/sentry/fsimpl/fuse/fusefs.go
@@ -191,9 +191,9 @@ func NewFUSEFilesystem(ctx context.Context, devMinor uint32, opts *filesystemOpt
}
// Release implements vfs.FilesystemImpl.Release.
-func (fs *filesystem) Release() {
+func (fs *filesystem) Release(ctx context.Context) {
fs.Filesystem.VFSFilesystem().VirtualFilesystem().PutAnonBlockDevMinor(fs.devMinor)
- fs.Filesystem.Release()
+ fs.Filesystem.Release(ctx)
}
// inode implements kernfs.Inode.
diff --git a/pkg/sentry/fsimpl/gofer/directory.go b/pkg/sentry/fsimpl/gofer/directory.go
index 8c7c8e1b3..1679066ba 100644
--- a/pkg/sentry/fsimpl/gofer/directory.go
+++ b/pkg/sentry/fsimpl/gofer/directory.go
@@ -122,7 +122,7 @@ type directoryFD struct {
}
// Release implements vfs.FileDescriptionImpl.Release.
-func (fd *directoryFD) Release() {
+func (fd *directoryFD) Release(context.Context) {
}
// IterDirents implements vfs.FileDescriptionImpl.IterDirents.
@@ -139,7 +139,7 @@ func (fd *directoryFD) IterDirents(ctx context.Context, cb vfs.IterDirentsCallba
fd.dirents = ds
}
- d.InotifyWithParent(linux.IN_ACCESS, 0, vfs.PathEvent)
+ d.InotifyWithParent(ctx, linux.IN_ACCESS, 0, vfs.PathEvent)
if d.cachedMetadataAuthoritative() {
d.touchAtime(fd.vfsfd.Mount())
}
diff --git a/pkg/sentry/fsimpl/gofer/filesystem.go b/pkg/sentry/fsimpl/gofer/filesystem.go
index 00e3c99cd..e6af37d0d 100644
--- a/pkg/sentry/fsimpl/gofer/filesystem.go
+++ b/pkg/sentry/fsimpl/gofer/filesystem.go
@@ -55,7 +55,7 @@ func (fs *filesystem) Sync(ctx context.Context) error {
// Sync regular files.
for _, d := range ds {
err := d.syncSharedHandle(ctx)
- d.DecRef()
+ d.DecRef(ctx)
if err != nil && retErr == nil {
retErr = err
}
@@ -65,7 +65,7 @@ func (fs *filesystem) Sync(ctx context.Context) error {
// handles (so they won't be synced by the above).
for _, sffd := range sffds {
err := sffd.Sync(ctx)
- sffd.vfsfd.DecRef()
+ sffd.vfsfd.DecRef(ctx)
if err != nil && retErr == nil {
retErr = err
}
@@ -133,7 +133,7 @@ afterSymlink:
return d, nil
}
if name == ".." {
- if isRoot, err := rp.CheckRoot(&d.vfsd); err != nil {
+ if isRoot, err := rp.CheckRoot(ctx, &d.vfsd); err != nil {
return nil, err
} else if isRoot || d.parent == nil {
rp.Advance()
@@ -146,7 +146,7 @@ afterSymlink:
//
// Call rp.CheckMount() before updating d.parent's metadata, since if
// we traverse to another mount then d.parent's metadata is irrelevant.
- if err := rp.CheckMount(&d.parent.vfsd); err != nil {
+ if err := rp.CheckMount(ctx, &d.parent.vfsd); err != nil {
return nil, err
}
if d != d.parent && !d.cachedMetadataAuthoritative() {
@@ -164,7 +164,7 @@ afterSymlink:
if child == nil {
return nil, syserror.ENOENT
}
- if err := rp.CheckMount(&child.vfsd); err != nil {
+ if err := rp.CheckMount(ctx, &child.vfsd); err != nil {
return nil, err
}
if child.isSymlink() && mayFollowSymlinks && rp.ShouldFollowSymlink() {
@@ -239,7 +239,7 @@ func (fs *filesystem) revalidateChildLocked(ctx context.Context, vfsObj *vfs.Vir
// has 0 references, drop it). Wait to update parent.children until we
// know what to replace the existing dentry with (i.e. one of the
// returns below), to avoid a redundant map access.
- vfsObj.InvalidateDentry(&child.vfsd)
+ vfsObj.InvalidateDentry(ctx, &child.vfsd)
if child.isSynthetic() {
// Normally we don't mark invalidated dentries as deleted since
// they may still exist (but at a different path), and also for
@@ -332,7 +332,7 @@ func (fs *filesystem) resolveLocked(ctx context.Context, rp *vfs.ResolvingPath,
func (fs *filesystem) doCreateAt(ctx context.Context, rp *vfs.ResolvingPath, dir bool, createInRemoteDir func(parent *dentry, name string) error, createInSyntheticDir func(parent *dentry, name string) error) error {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckCaching(&ds)
+ defer fs.renameMuRUnlockAndCheckCaching(ctx, &ds)
start := rp.Start().Impl().(*dentry)
if !start.cachedMetadataAuthoritative() {
// Get updated metadata for start as required by
@@ -384,7 +384,7 @@ func (fs *filesystem) doCreateAt(ctx context.Context, rp *vfs.ResolvingPath, dir
if dir {
ev |= linux.IN_ISDIR
}
- parent.watches.Notify(name, uint32(ev), 0, vfs.InodeEvent, false /* unlinked */)
+ parent.watches.Notify(ctx, name, uint32(ev), 0, vfs.InodeEvent, false /* unlinked */)
return nil
}
if fs.opts.interop == InteropModeShared {
@@ -405,7 +405,7 @@ func (fs *filesystem) doCreateAt(ctx context.Context, rp *vfs.ResolvingPath, dir
if dir {
ev |= linux.IN_ISDIR
}
- parent.watches.Notify(name, uint32(ev), 0, vfs.InodeEvent, false /* unlinked */)
+ parent.watches.Notify(ctx, name, uint32(ev), 0, vfs.InodeEvent, false /* unlinked */)
return nil
}
if child := parent.children[name]; child != nil {
@@ -426,7 +426,7 @@ func (fs *filesystem) doCreateAt(ctx context.Context, rp *vfs.ResolvingPath, dir
if dir {
ev |= linux.IN_ISDIR
}
- parent.watches.Notify(name, uint32(ev), 0, vfs.InodeEvent, false /* unlinked */)
+ parent.watches.Notify(ctx, name, uint32(ev), 0, vfs.InodeEvent, false /* unlinked */)
return nil
}
@@ -434,7 +434,7 @@ func (fs *filesystem) doCreateAt(ctx context.Context, rp *vfs.ResolvingPath, dir
func (fs *filesystem) unlinkAt(ctx context.Context, rp *vfs.ResolvingPath, dir bool) error {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckCaching(&ds)
+ defer fs.renameMuRUnlockAndCheckCaching(ctx, &ds)
start := rp.Start().Impl().(*dentry)
if !start.cachedMetadataAuthoritative() {
// Get updated metadata for start as required by
@@ -470,7 +470,7 @@ func (fs *filesystem) unlinkAt(ctx context.Context, rp *vfs.ResolvingPath, dir b
}
vfsObj := rp.VirtualFilesystem()
mntns := vfs.MountNamespaceFromContext(ctx)
- defer mntns.DecRef()
+ defer mntns.DecRef(ctx)
parent.dirMu.Lock()
defer parent.dirMu.Unlock()
@@ -600,17 +600,17 @@ func (fs *filesystem) unlinkAt(ctx context.Context, rp *vfs.ResolvingPath, dir b
// Generate inotify events for rmdir or unlink.
if dir {
- parent.watches.Notify(name, linux.IN_DELETE|linux.IN_ISDIR, 0, vfs.InodeEvent, true /* unlinked */)
+ parent.watches.Notify(ctx, name, linux.IN_DELETE|linux.IN_ISDIR, 0, vfs.InodeEvent, true /* unlinked */)
} else {
var cw *vfs.Watches
if child != nil {
cw = &child.watches
}
- vfs.InotifyRemoveChild(cw, &parent.watches, name)
+ vfs.InotifyRemoveChild(ctx, cw, &parent.watches, name)
}
if child != nil {
- vfsObj.CommitDeleteDentry(&child.vfsd)
+ vfsObj.CommitDeleteDentry(ctx, &child.vfsd)
child.setDeleted()
if child.isSynthetic() {
parent.syntheticChildren--
@@ -637,7 +637,7 @@ func (fs *filesystem) unlinkAt(ctx context.Context, rp *vfs.ResolvingPath, dir b
// but dentry slices are allocated lazily, and it's much easier to say "defer
// fs.renameMuRUnlockAndCheckCaching(&ds)" than "defer func() {
// fs.renameMuRUnlockAndCheckCaching(ds) }()" to work around this.
-func (fs *filesystem) renameMuRUnlockAndCheckCaching(ds **[]*dentry) {
+func (fs *filesystem) renameMuRUnlockAndCheckCaching(ctx context.Context, ds **[]*dentry) {
fs.renameMu.RUnlock()
if *ds == nil {
return
@@ -645,20 +645,20 @@ func (fs *filesystem) renameMuRUnlockAndCheckCaching(ds **[]*dentry) {
if len(**ds) != 0 {
fs.renameMu.Lock()
for _, d := range **ds {
- d.checkCachingLocked()
+ d.checkCachingLocked(ctx)
}
fs.renameMu.Unlock()
}
putDentrySlice(*ds)
}
-func (fs *filesystem) renameMuUnlockAndCheckCaching(ds **[]*dentry) {
+func (fs *filesystem) renameMuUnlockAndCheckCaching(ctx context.Context, ds **[]*dentry) {
if *ds == nil {
fs.renameMu.Unlock()
return
}
for _, d := range **ds {
- d.checkCachingLocked()
+ d.checkCachingLocked(ctx)
}
fs.renameMu.Unlock()
putDentrySlice(*ds)
@@ -668,7 +668,7 @@ func (fs *filesystem) renameMuUnlockAndCheckCaching(ds **[]*dentry) {
func (fs *filesystem) AccessAt(ctx context.Context, rp *vfs.ResolvingPath, creds *auth.Credentials, ats vfs.AccessTypes) error {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckCaching(&ds)
+ defer fs.renameMuRUnlockAndCheckCaching(ctx, &ds)
d, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
return err
@@ -680,7 +680,7 @@ func (fs *filesystem) AccessAt(ctx context.Context, rp *vfs.ResolvingPath, creds
func (fs *filesystem) GetDentryAt(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.GetDentryOptions) (*vfs.Dentry, error) {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckCaching(&ds)
+ defer fs.renameMuRUnlockAndCheckCaching(ctx, &ds)
d, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
return nil, err
@@ -701,7 +701,7 @@ func (fs *filesystem) GetDentryAt(ctx context.Context, rp *vfs.ResolvingPath, op
func (fs *filesystem) GetParentDentryAt(ctx context.Context, rp *vfs.ResolvingPath) (*vfs.Dentry, error) {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckCaching(&ds)
+ defer fs.renameMuRUnlockAndCheckCaching(ctx, &ds)
start := rp.Start().Impl().(*dentry)
if !start.cachedMetadataAuthoritative() {
// Get updated metadata for start as required by
@@ -812,7 +812,7 @@ func (fs *filesystem) OpenAt(ctx context.Context, rp *vfs.ResolvingPath, opts vf
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckCaching(&ds)
+ defer fs.renameMuRUnlockAndCheckCaching(ctx, &ds)
start := rp.Start().Impl().(*dentry)
if !start.cachedMetadataAuthoritative() {
@@ -1126,7 +1126,7 @@ func (d *dentry) createAndOpenChildLocked(ctx context.Context, rp *vfs.Resolving
}
childVFSFD = &fd.vfsfd
}
- d.watches.Notify(name, linux.IN_CREATE, 0, vfs.PathEvent, false /* unlinked */)
+ d.watches.Notify(ctx, name, linux.IN_CREATE, 0, vfs.PathEvent, false /* unlinked */)
return childVFSFD, nil
}
@@ -1134,7 +1134,7 @@ func (d *dentry) createAndOpenChildLocked(ctx context.Context, rp *vfs.Resolving
func (fs *filesystem) ReadlinkAt(ctx context.Context, rp *vfs.ResolvingPath) (string, error) {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckCaching(&ds)
+ defer fs.renameMuRUnlockAndCheckCaching(ctx, &ds)
d, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
return "", err
@@ -1154,7 +1154,7 @@ func (fs *filesystem) RenameAt(ctx context.Context, rp *vfs.ResolvingPath, oldPa
var ds *[]*dentry
fs.renameMu.Lock()
- defer fs.renameMuUnlockAndCheckCaching(&ds)
+ defer fs.renameMuUnlockAndCheckCaching(ctx, &ds)
newParent, err := fs.walkParentDirLocked(ctx, rp, rp.Start().Impl().(*dentry), &ds)
if err != nil {
return err
@@ -1244,7 +1244,7 @@ func (fs *filesystem) RenameAt(ctx context.Context, rp *vfs.ResolvingPath, oldPa
return nil
}
mntns := vfs.MountNamespaceFromContext(ctx)
- defer mntns.DecRef()
+ defer mntns.DecRef(ctx)
if err := vfsObj.PrepareRenameDentry(mntns, &renamed.vfsd, replacedVFSD); err != nil {
return err
}
@@ -1269,7 +1269,7 @@ func (fs *filesystem) RenameAt(ctx context.Context, rp *vfs.ResolvingPath, oldPa
}
// Update the dentry tree.
- vfsObj.CommitRenameReplaceDentry(&renamed.vfsd, replacedVFSD)
+ vfsObj.CommitRenameReplaceDentry(ctx, &renamed.vfsd, replacedVFSD)
if replaced != nil {
replaced.setDeleted()
if replaced.isSynthetic() {
@@ -1331,17 +1331,17 @@ func (fs *filesystem) SetStatAt(ctx context.Context, rp *vfs.ResolvingPath, opts
fs.renameMu.RLock()
d, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
- fs.renameMuRUnlockAndCheckCaching(&ds)
+ fs.renameMuRUnlockAndCheckCaching(ctx, &ds)
return err
}
if err := d.setStat(ctx, rp.Credentials(), &opts, rp.Mount()); err != nil {
- fs.renameMuRUnlockAndCheckCaching(&ds)
+ fs.renameMuRUnlockAndCheckCaching(ctx, &ds)
return err
}
- fs.renameMuRUnlockAndCheckCaching(&ds)
+ fs.renameMuRUnlockAndCheckCaching(ctx, &ds)
if ev := vfs.InotifyEventFromStatMask(opts.Stat.Mask); ev != 0 {
- d.InotifyWithParent(ev, 0, vfs.InodeEvent)
+ d.InotifyWithParent(ctx, ev, 0, vfs.InodeEvent)
}
return nil
}
@@ -1350,7 +1350,7 @@ func (fs *filesystem) SetStatAt(ctx context.Context, rp *vfs.ResolvingPath, opts
func (fs *filesystem) StatAt(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.StatOptions) (linux.Statx, error) {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckCaching(&ds)
+ defer fs.renameMuRUnlockAndCheckCaching(ctx, &ds)
d, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
return linux.Statx{}, err
@@ -1367,7 +1367,7 @@ func (fs *filesystem) StatAt(ctx context.Context, rp *vfs.ResolvingPath, opts vf
func (fs *filesystem) StatFSAt(ctx context.Context, rp *vfs.ResolvingPath) (linux.Statfs, error) {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckCaching(&ds)
+ defer fs.renameMuRUnlockAndCheckCaching(ctx, &ds)
d, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
return linux.Statfs{}, err
@@ -1417,7 +1417,7 @@ func (fs *filesystem) UnlinkAt(ctx context.Context, rp *vfs.ResolvingPath) error
func (fs *filesystem) BoundEndpointAt(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.BoundEndpointOptions) (transport.BoundEndpoint, error) {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckCaching(&ds)
+ defer fs.renameMuRUnlockAndCheckCaching(ctx, &ds)
d, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
return nil, err
@@ -1443,7 +1443,7 @@ func (fs *filesystem) BoundEndpointAt(ctx context.Context, rp *vfs.ResolvingPath
func (fs *filesystem) ListxattrAt(ctx context.Context, rp *vfs.ResolvingPath, size uint64) ([]string, error) {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckCaching(&ds)
+ defer fs.renameMuRUnlockAndCheckCaching(ctx, &ds)
d, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
return nil, err
@@ -1455,7 +1455,7 @@ func (fs *filesystem) ListxattrAt(ctx context.Context, rp *vfs.ResolvingPath, si
func (fs *filesystem) GetxattrAt(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.GetxattrOptions) (string, error) {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckCaching(&ds)
+ defer fs.renameMuRUnlockAndCheckCaching(ctx, &ds)
d, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
return "", err
@@ -1469,16 +1469,16 @@ func (fs *filesystem) SetxattrAt(ctx context.Context, rp *vfs.ResolvingPath, opt
fs.renameMu.RLock()
d, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
- fs.renameMuRUnlockAndCheckCaching(&ds)
+ fs.renameMuRUnlockAndCheckCaching(ctx, &ds)
return err
}
if err := d.setxattr(ctx, rp.Credentials(), &opts); err != nil {
- fs.renameMuRUnlockAndCheckCaching(&ds)
+ fs.renameMuRUnlockAndCheckCaching(ctx, &ds)
return err
}
- fs.renameMuRUnlockAndCheckCaching(&ds)
+ fs.renameMuRUnlockAndCheckCaching(ctx, &ds)
- d.InotifyWithParent(linux.IN_ATTRIB, 0, vfs.InodeEvent)
+ d.InotifyWithParent(ctx, linux.IN_ATTRIB, 0, vfs.InodeEvent)
return nil
}
@@ -1488,16 +1488,16 @@ func (fs *filesystem) RemovexattrAt(ctx context.Context, rp *vfs.ResolvingPath,
fs.renameMu.RLock()
d, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
- fs.renameMuRUnlockAndCheckCaching(&ds)
+ fs.renameMuRUnlockAndCheckCaching(ctx, &ds)
return err
}
if err := d.removexattr(ctx, rp.Credentials(), name); err != nil {
- fs.renameMuRUnlockAndCheckCaching(&ds)
+ fs.renameMuRUnlockAndCheckCaching(ctx, &ds)
return err
}
- fs.renameMuRUnlockAndCheckCaching(&ds)
+ fs.renameMuRUnlockAndCheckCaching(ctx, &ds)
- d.InotifyWithParent(linux.IN_ATTRIB, 0, vfs.InodeEvent)
+ d.InotifyWithParent(ctx, linux.IN_ATTRIB, 0, vfs.InodeEvent)
return nil
}
diff --git a/pkg/sentry/fsimpl/gofer/gofer.go b/pkg/sentry/fsimpl/gofer/gofer.go
index e20de84b5..2e5575d8d 100644
--- a/pkg/sentry/fsimpl/gofer/gofer.go
+++ b/pkg/sentry/fsimpl/gofer/gofer.go
@@ -482,7 +482,7 @@ func (fstype FilesystemType) GetFilesystem(ctx context.Context, vfsObj *vfs.Virt
root, err := fs.newDentry(ctx, attachFile, qid, attrMask, &attr)
if err != nil {
attachFile.close(ctx)
- fs.vfsfs.DecRef()
+ fs.vfsfs.DecRef(ctx)
return nil, nil, err
}
// Set the root's reference count to 2. One reference is returned to the
@@ -495,8 +495,7 @@ func (fstype FilesystemType) GetFilesystem(ctx context.Context, vfsObj *vfs.Virt
}
// Release implements vfs.FilesystemImpl.Release.
-func (fs *filesystem) Release() {
- ctx := context.Background()
+func (fs *filesystem) Release(ctx context.Context) {
mf := fs.mfp.MemoryFile()
fs.syncMu.Lock()
@@ -1089,10 +1088,10 @@ func (d *dentry) TryIncRef() bool {
}
// DecRef implements vfs.DentryImpl.DecRef.
-func (d *dentry) DecRef() {
+func (d *dentry) DecRef(ctx context.Context) {
if refs := atomic.AddInt64(&d.refs, -1); refs == 0 {
d.fs.renameMu.Lock()
- d.checkCachingLocked()
+ d.checkCachingLocked(ctx)
d.fs.renameMu.Unlock()
} else if refs < 0 {
panic("gofer.dentry.DecRef() called without holding a reference")
@@ -1109,7 +1108,7 @@ func (d *dentry) decRefLocked() {
}
// InotifyWithParent implements vfs.DentryImpl.InotifyWithParent.
-func (d *dentry) InotifyWithParent(events, cookie uint32, et vfs.EventType) {
+func (d *dentry) InotifyWithParent(ctx context.Context, events, cookie uint32, et vfs.EventType) {
if d.isDir() {
events |= linux.IN_ISDIR
}
@@ -1117,9 +1116,9 @@ func (d *dentry) InotifyWithParent(events, cookie uint32, et vfs.EventType) {
d.fs.renameMu.RLock()
// The ordering below is important, Linux always notifies the parent first.
if d.parent != nil {
- d.parent.watches.Notify(d.name, events, cookie, et, d.isDeleted())
+ d.parent.watches.Notify(ctx, d.name, events, cookie, et, d.isDeleted())
}
- d.watches.Notify("", events, cookie, et, d.isDeleted())
+ d.watches.Notify(ctx, "", events, cookie, et, d.isDeleted())
d.fs.renameMu.RUnlock()
}
@@ -1131,10 +1130,10 @@ func (d *dentry) Watches() *vfs.Watches {
// OnZeroWatches implements vfs.DentryImpl.OnZeroWatches.
//
// If no watches are left on this dentry and it has no references, cache it.
-func (d *dentry) OnZeroWatches() {
+func (d *dentry) OnZeroWatches(ctx context.Context) {
if atomic.LoadInt64(&d.refs) == 0 {
d.fs.renameMu.Lock()
- d.checkCachingLocked()
+ d.checkCachingLocked(ctx)
d.fs.renameMu.Unlock()
}
}
@@ -1149,7 +1148,7 @@ func (d *dentry) OnZeroWatches() {
// do nothing.
//
// Preconditions: d.fs.renameMu must be locked for writing.
-func (d *dentry) checkCachingLocked() {
+func (d *dentry) checkCachingLocked(ctx context.Context) {
// Dentries with a non-zero reference count must be retained. (The only way
// to obtain a reference on a dentry with zero references is via path
// resolution, which requires renameMu, so if d.refs is zero then it will
@@ -1171,14 +1170,14 @@ func (d *dentry) checkCachingLocked() {
// reachable by path resolution and should be dropped immediately.
if d.vfsd.IsDead() {
if d.isDeleted() {
- d.watches.HandleDeletion()
+ d.watches.HandleDeletion(ctx)
}
if d.cached {
d.fs.cachedDentries.Remove(d)
d.fs.cachedDentriesLen--
d.cached = false
}
- d.destroyLocked()
+ d.destroyLocked(ctx)
return
}
// If d still has inotify watches and it is not deleted or invalidated, we
@@ -1213,7 +1212,7 @@ func (d *dentry) checkCachingLocked() {
if !victim.vfsd.IsDead() {
// Note that victim can't be a mount point (in any mount
// namespace), since VFS holds references on mount points.
- d.fs.vfsfs.VirtualFilesystem().InvalidateDentry(&victim.vfsd)
+ d.fs.vfsfs.VirtualFilesystem().InvalidateDentry(ctx, &victim.vfsd)
delete(victim.parent.children, victim.name)
// We're only deleting the dentry, not the file it
// represents, so we don't need to update
@@ -1221,7 +1220,7 @@ func (d *dentry) checkCachingLocked() {
}
victim.parent.dirMu.Unlock()
}
- victim.destroyLocked()
+ victim.destroyLocked(ctx)
}
// Whether or not victim was destroyed, we brought fs.cachedDentriesLen
// back down to fs.opts.maxCachedDentries, so we don't loop.
@@ -1233,7 +1232,7 @@ func (d *dentry) checkCachingLocked() {
//
// Preconditions: d.fs.renameMu must be locked for writing. d.refs == 0. d is
// not a child dentry.
-func (d *dentry) destroyLocked() {
+func (d *dentry) destroyLocked(ctx context.Context) {
switch atomic.LoadInt64(&d.refs) {
case 0:
// Mark the dentry destroyed.
@@ -1244,7 +1243,6 @@ func (d *dentry) destroyLocked() {
panic("dentry.destroyLocked() called with references on the dentry")
}
- ctx := context.Background()
d.handleMu.Lock()
if !d.handle.file.isNil() {
mf := d.fs.mfp.MemoryFile()
@@ -1276,7 +1274,7 @@ func (d *dentry) destroyLocked() {
// d.fs.renameMu.
if d.parent != nil {
if refs := atomic.AddInt64(&d.parent.refs, -1); refs == 0 {
- d.parent.checkCachingLocked()
+ d.parent.checkCachingLocked(ctx)
} else if refs < 0 {
panic("gofer.dentry.DecRef() called without holding a reference")
}
@@ -1514,7 +1512,7 @@ func (fd *fileDescription) SetStat(ctx context.Context, opts vfs.SetStatOptions)
return err
}
if ev := vfs.InotifyEventFromStatMask(opts.Stat.Mask); ev != 0 {
- fd.dentry().InotifyWithParent(ev, 0, vfs.InodeEvent)
+ fd.dentry().InotifyWithParent(ctx, ev, 0, vfs.InodeEvent)
}
return nil
}
@@ -1535,7 +1533,7 @@ func (fd *fileDescription) Setxattr(ctx context.Context, opts vfs.SetxattrOption
if err := d.setxattr(ctx, auth.CredentialsFromContext(ctx), &opts); err != nil {
return err
}
- d.InotifyWithParent(linux.IN_ATTRIB, 0, vfs.InodeEvent)
+ d.InotifyWithParent(ctx, linux.IN_ATTRIB, 0, vfs.InodeEvent)
return nil
}
@@ -1545,7 +1543,7 @@ func (fd *fileDescription) Removexattr(ctx context.Context, name string) error {
if err := d.removexattr(ctx, auth.CredentialsFromContext(ctx), name); err != nil {
return err
}
- d.InotifyWithParent(linux.IN_ATTRIB, 0, vfs.InodeEvent)
+ d.InotifyWithParent(ctx, linux.IN_ATTRIB, 0, vfs.InodeEvent)
return nil
}
diff --git a/pkg/sentry/fsimpl/gofer/regular_file.go b/pkg/sentry/fsimpl/gofer/regular_file.go
index 09f142cfc..420e8efe2 100644
--- a/pkg/sentry/fsimpl/gofer/regular_file.go
+++ b/pkg/sentry/fsimpl/gofer/regular_file.go
@@ -48,7 +48,7 @@ type regularFileFD struct {
}
// Release implements vfs.FileDescriptionImpl.Release.
-func (fd *regularFileFD) Release() {
+func (fd *regularFileFD) Release(context.Context) {
}
// OnClose implements vfs.FileDescriptionImpl.OnClose.
diff --git a/pkg/sentry/fsimpl/gofer/socket.go b/pkg/sentry/fsimpl/gofer/socket.go
index d6dbe9092..85d2bee72 100644
--- a/pkg/sentry/fsimpl/gofer/socket.go
+++ b/pkg/sentry/fsimpl/gofer/socket.go
@@ -108,7 +108,7 @@ func (e *endpoint) UnidirectionalConnect(ctx context.Context) (transport.Connect
// We don't need the receiver.
c.CloseRecv()
- c.Release()
+ c.Release(ctx)
return c, nil
}
@@ -136,8 +136,8 @@ func (e *endpoint) newConnectedEndpoint(ctx context.Context, flags p9.ConnectFla
}
// Release implements transport.BoundEndpoint.Release.
-func (e *endpoint) Release() {
- e.dentry.DecRef()
+func (e *endpoint) Release(ctx context.Context) {
+ e.dentry.DecRef(ctx)
}
// Passcred implements transport.BoundEndpoint.Passcred.
diff --git a/pkg/sentry/fsimpl/gofer/special_file.go b/pkg/sentry/fsimpl/gofer/special_file.go
index 811528982..fc269ef2b 100644
--- a/pkg/sentry/fsimpl/gofer/special_file.go
+++ b/pkg/sentry/fsimpl/gofer/special_file.go
@@ -80,11 +80,11 @@ func newSpecialFileFD(h handle, mnt *vfs.Mount, d *dentry, locks *vfs.FileLocks,
}
// Release implements vfs.FileDescriptionImpl.Release.
-func (fd *specialFileFD) Release() {
+func (fd *specialFileFD) Release(ctx context.Context) {
if fd.haveQueue {
fdnotifier.RemoveFD(fd.handle.fd)
}
- fd.handle.close(context.Background())
+ fd.handle.close(ctx)
fs := fd.vfsfd.Mount().Filesystem().Impl().(*filesystem)
fs.syncMu.Lock()
delete(fs.specialFileFDs, fd)
diff --git a/pkg/sentry/fsimpl/host/control.go b/pkg/sentry/fsimpl/host/control.go
index b9082a20f..0135e4428 100644
--- a/pkg/sentry/fsimpl/host/control.go
+++ b/pkg/sentry/fsimpl/host/control.go
@@ -58,7 +58,7 @@ func (c *scmRights) Clone() transport.RightsControlMessage {
}
// Release implements transport.RightsControlMessage.Release.
-func (c *scmRights) Release() {
+func (c *scmRights) Release(ctx context.Context) {
for _, fd := range c.fds {
syscall.Close(fd)
}
diff --git a/pkg/sentry/fsimpl/host/host.go b/pkg/sentry/fsimpl/host/host.go
index c894f2ca0..bf922c566 100644
--- a/pkg/sentry/fsimpl/host/host.go
+++ b/pkg/sentry/fsimpl/host/host.go
@@ -117,7 +117,7 @@ func NewFD(ctx context.Context, mnt *vfs.Mount, hostFD int, opts *NewFDOptions)
d.Init(i)
// i.open will take a reference on d.
- defer d.DecRef()
+ defer d.DecRef(ctx)
// For simplicity, fileDescription.offset is set to 0. Technically, we
// should only set to 0 on files that are not seekable (sockets, pipes,
@@ -168,9 +168,9 @@ type filesystem struct {
devMinor uint32
}
-func (fs *filesystem) Release() {
+func (fs *filesystem) Release(ctx context.Context) {
fs.VFSFilesystem().VirtualFilesystem().PutAnonBlockDevMinor(fs.devMinor)
- fs.Filesystem.Release()
+ fs.Filesystem.Release(ctx)
}
func (fs *filesystem) PrependPath(ctx context.Context, vfsroot, vd vfs.VirtualDentry, b *fspath.Builder) error {
@@ -431,12 +431,12 @@ func (i *inode) SetStat(ctx context.Context, fs *vfs.Filesystem, creds *auth.Cre
}
// DecRef implements kernfs.Inode.
-func (i *inode) DecRef() {
- i.AtomicRefCount.DecRefWithDestructor(i.Destroy)
+func (i *inode) DecRef(ctx context.Context) {
+ i.AtomicRefCount.DecRefWithDestructor(ctx, i.Destroy)
}
// Destroy implements kernfs.Inode.
-func (i *inode) Destroy() {
+func (i *inode) Destroy(context.Context) {
if i.wouldBlock {
fdnotifier.RemoveFD(int32(i.hostFD))
}
@@ -542,7 +542,7 @@ func (f *fileDescription) Stat(ctx context.Context, opts vfs.StatOptions) (linux
}
// Release implements vfs.FileDescriptionImpl.
-func (f *fileDescription) Release() {
+func (f *fileDescription) Release(context.Context) {
// noop
}
diff --git a/pkg/sentry/fsimpl/host/socket.go b/pkg/sentry/fsimpl/host/socket.go
index fd16bd92d..4979dd0a9 100644
--- a/pkg/sentry/fsimpl/host/socket.go
+++ b/pkg/sentry/fsimpl/host/socket.go
@@ -139,7 +139,7 @@ func NewConnectedEndpoint(ctx context.Context, hostFD int, addr string, saveable
}
// Send implements transport.ConnectedEndpoint.Send.
-func (c *ConnectedEndpoint) Send(data [][]byte, controlMessages transport.ControlMessages, from tcpip.FullAddress) (int64, bool, *syserr.Error) {
+func (c *ConnectedEndpoint) Send(ctx context.Context, data [][]byte, controlMessages transport.ControlMessages, from tcpip.FullAddress) (int64, bool, *syserr.Error) {
c.mu.RLock()
defer c.mu.RUnlock()
@@ -216,7 +216,7 @@ func (c *ConnectedEndpoint) EventUpdate() {
}
// Recv implements transport.Receiver.Recv.
-func (c *ConnectedEndpoint) Recv(data [][]byte, creds bool, numRights int, peek bool) (int64, int64, transport.ControlMessages, bool, tcpip.FullAddress, bool, *syserr.Error) {
+func (c *ConnectedEndpoint) Recv(ctx context.Context, data [][]byte, creds bool, numRights int, peek bool) (int64, int64, transport.ControlMessages, bool, tcpip.FullAddress, bool, *syserr.Error) {
c.mu.RLock()
defer c.mu.RUnlock()
@@ -317,8 +317,8 @@ func (c *ConnectedEndpoint) destroyLocked() {
// Release implements transport.ConnectedEndpoint.Release and
// transport.Receiver.Release.
-func (c *ConnectedEndpoint) Release() {
- c.ref.DecRefWithDestructor(func() {
+func (c *ConnectedEndpoint) Release(ctx context.Context) {
+ c.ref.DecRefWithDestructor(ctx, func(context.Context) {
c.mu.Lock()
c.destroyLocked()
c.mu.Unlock()
@@ -347,8 +347,8 @@ func (e *SCMConnectedEndpoint) Init() error {
// Release implements transport.ConnectedEndpoint.Release and
// transport.Receiver.Release.
-func (e *SCMConnectedEndpoint) Release() {
- e.ref.DecRefWithDestructor(func() {
+func (e *SCMConnectedEndpoint) Release(ctx context.Context) {
+ e.ref.DecRefWithDestructor(ctx, func(context.Context) {
e.mu.Lock()
if err := syscall.Close(e.fd); err != nil {
log.Warningf("Failed to close host fd %d: %v", err)
diff --git a/pkg/sentry/fsimpl/host/tty.go b/pkg/sentry/fsimpl/host/tty.go
index 4ee9270cc..d372c60cb 100644
--- a/pkg/sentry/fsimpl/host/tty.go
+++ b/pkg/sentry/fsimpl/host/tty.go
@@ -67,12 +67,12 @@ func (t *TTYFileDescription) ForegroundProcessGroup() *kernel.ProcessGroup {
}
// Release implements fs.FileOperations.Release.
-func (t *TTYFileDescription) Release() {
+func (t *TTYFileDescription) Release(ctx context.Context) {
t.mu.Lock()
t.fgProcessGroup = nil
t.mu.Unlock()
- t.fileDescription.Release()
+ t.fileDescription.Release(ctx)
}
// PRead implements vfs.FileDescriptionImpl.
diff --git a/pkg/sentry/fsimpl/kernfs/dynamic_bytes_file.go b/pkg/sentry/fsimpl/kernfs/dynamic_bytes_file.go
index c6c4472e7..12adf727a 100644
--- a/pkg/sentry/fsimpl/kernfs/dynamic_bytes_file.go
+++ b/pkg/sentry/fsimpl/kernfs/dynamic_bytes_file.go
@@ -122,7 +122,7 @@ func (fd *DynamicBytesFD) PWrite(ctx context.Context, src usermem.IOSequence, of
}
// Release implements vfs.FileDescriptionImpl.Release.
-func (fd *DynamicBytesFD) Release() {}
+func (fd *DynamicBytesFD) Release(context.Context) {}
// Stat implements vfs.FileDescriptionImpl.Stat.
func (fd *DynamicBytesFD) Stat(ctx context.Context, opts vfs.StatOptions) (linux.Statx, error) {
diff --git a/pkg/sentry/fsimpl/kernfs/fd_impl_util.go b/pkg/sentry/fsimpl/kernfs/fd_impl_util.go
index 1d37ccb98..fcee6200a 100644
--- a/pkg/sentry/fsimpl/kernfs/fd_impl_util.go
+++ b/pkg/sentry/fsimpl/kernfs/fd_impl_util.go
@@ -113,7 +113,7 @@ func (fd *GenericDirectoryFD) PWrite(ctx context.Context, src usermem.IOSequence
}
// Release implements vfs.FileDescriptionImpl.Release.
-func (fd *GenericDirectoryFD) Release() {}
+func (fd *GenericDirectoryFD) Release(context.Context) {}
func (fd *GenericDirectoryFD) filesystem() *vfs.Filesystem {
return fd.vfsfd.VirtualDentry().Mount().Filesystem()
diff --git a/pkg/sentry/fsimpl/kernfs/filesystem.go b/pkg/sentry/fsimpl/kernfs/filesystem.go
index 61a36cff9..d7edb6342 100644
--- a/pkg/sentry/fsimpl/kernfs/filesystem.go
+++ b/pkg/sentry/fsimpl/kernfs/filesystem.go
@@ -56,13 +56,13 @@ afterSymlink:
return vfsd, nil
}
if name == ".." {
- if isRoot, err := rp.CheckRoot(vfsd); err != nil {
+ if isRoot, err := rp.CheckRoot(ctx, vfsd); err != nil {
return nil, err
} else if isRoot || d.parent == nil {
rp.Advance()
return vfsd, nil
}
- if err := rp.CheckMount(&d.parent.vfsd); err != nil {
+ if err := rp.CheckMount(ctx, &d.parent.vfsd); err != nil {
return nil, err
}
rp.Advance()
@@ -77,7 +77,7 @@ afterSymlink:
if err != nil {
return nil, err
}
- if err := rp.CheckMount(&next.vfsd); err != nil {
+ if err := rp.CheckMount(ctx, &next.vfsd); err != nil {
return nil, err
}
// Resolve any symlink at current path component.
@@ -88,7 +88,7 @@ afterSymlink:
}
if targetVD.Ok() {
err := rp.HandleJump(targetVD)
- targetVD.DecRef()
+ targetVD.DecRef(ctx)
if err != nil {
return nil, err
}
@@ -116,7 +116,7 @@ func (fs *Filesystem) revalidateChildLocked(ctx context.Context, vfsObj *vfs.Vir
// Cached dentry exists, revalidate.
if !child.inode.Valid(ctx) {
delete(parent.children, name)
- vfsObj.InvalidateDentry(&child.vfsd)
+ vfsObj.InvalidateDentry(ctx, &child.vfsd)
fs.deferDecRef(&child.vfsd) // Reference from Lookup.
child = nil
}
@@ -234,7 +234,7 @@ func checkDeleteLocked(ctx context.Context, rp *vfs.ResolvingPath, vfsd *vfs.Den
}
// Release implements vfs.FilesystemImpl.Release.
-func (fs *Filesystem) Release() {
+func (fs *Filesystem) Release(context.Context) {
}
// Sync implements vfs.FilesystemImpl.Sync.
@@ -246,7 +246,7 @@ func (fs *Filesystem) Sync(ctx context.Context) error {
// AccessAt implements vfs.Filesystem.Impl.AccessAt.
func (fs *Filesystem) AccessAt(ctx context.Context, rp *vfs.ResolvingPath, creds *auth.Credentials, ats vfs.AccessTypes) error {
fs.mu.RLock()
- defer fs.processDeferredDecRefs()
+ defer fs.processDeferredDecRefs(ctx)
defer fs.mu.RUnlock()
_, inode, err := fs.walkExistingLocked(ctx, rp)
@@ -259,7 +259,7 @@ func (fs *Filesystem) AccessAt(ctx context.Context, rp *vfs.ResolvingPath, creds
// GetDentryAt implements vfs.FilesystemImpl.GetDentryAt.
func (fs *Filesystem) GetDentryAt(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.GetDentryOptions) (*vfs.Dentry, error) {
fs.mu.RLock()
- defer fs.processDeferredDecRefs()
+ defer fs.processDeferredDecRefs(ctx)
defer fs.mu.RUnlock()
vfsd, inode, err := fs.walkExistingLocked(ctx, rp)
if err != nil {
@@ -282,7 +282,7 @@ func (fs *Filesystem) GetDentryAt(ctx context.Context, rp *vfs.ResolvingPath, op
// GetParentDentryAt implements vfs.FilesystemImpl.GetParentDentryAt.
func (fs *Filesystem) GetParentDentryAt(ctx context.Context, rp *vfs.ResolvingPath) (*vfs.Dentry, error) {
fs.mu.RLock()
- defer fs.processDeferredDecRefs()
+ defer fs.processDeferredDecRefs(ctx)
defer fs.mu.RUnlock()
vfsd, _, err := fs.walkParentDirLocked(ctx, rp)
if err != nil {
@@ -300,7 +300,7 @@ func (fs *Filesystem) LinkAt(ctx context.Context, rp *vfs.ResolvingPath, vd vfs.
fs.mu.Lock()
defer fs.mu.Unlock()
parentVFSD, parentInode, err := fs.walkParentDirLocked(ctx, rp)
- fs.processDeferredDecRefsLocked()
+ fs.processDeferredDecRefsLocked(ctx)
if err != nil {
return err
}
@@ -337,7 +337,7 @@ func (fs *Filesystem) MkdirAt(ctx context.Context, rp *vfs.ResolvingPath, opts v
fs.mu.Lock()
defer fs.mu.Unlock()
parentVFSD, parentInode, err := fs.walkParentDirLocked(ctx, rp)
- fs.processDeferredDecRefsLocked()
+ fs.processDeferredDecRefsLocked(ctx)
if err != nil {
return err
}
@@ -365,7 +365,7 @@ func (fs *Filesystem) MknodAt(ctx context.Context, rp *vfs.ResolvingPath, opts v
fs.mu.Lock()
defer fs.mu.Unlock()
parentVFSD, parentInode, err := fs.walkParentDirLocked(ctx, rp)
- fs.processDeferredDecRefsLocked()
+ fs.processDeferredDecRefsLocked(ctx)
if err != nil {
return err
}
@@ -397,7 +397,7 @@ func (fs *Filesystem) OpenAt(ctx context.Context, rp *vfs.ResolvingPath, opts vf
// Do not create new file.
if opts.Flags&linux.O_CREAT == 0 {
fs.mu.RLock()
- defer fs.processDeferredDecRefs()
+ defer fs.processDeferredDecRefs(ctx)
defer fs.mu.RUnlock()
vfsd, inode, err := fs.walkExistingLocked(ctx, rp)
if err != nil {
@@ -429,7 +429,7 @@ func (fs *Filesystem) OpenAt(ctx context.Context, rp *vfs.ResolvingPath, opts vf
}
afterTrailingSymlink:
parentVFSD, parentInode, err := fs.walkParentDirLocked(ctx, rp)
- fs.processDeferredDecRefsLocked()
+ fs.processDeferredDecRefsLocked(ctx)
if err != nil {
return nil, err
}
@@ -483,7 +483,7 @@ afterTrailingSymlink:
}
if targetVD.Ok() {
err := rp.HandleJump(targetVD)
- targetVD.DecRef()
+ targetVD.DecRef(ctx)
if err != nil {
return nil, err
}
@@ -507,7 +507,7 @@ func (fs *Filesystem) ReadlinkAt(ctx context.Context, rp *vfs.ResolvingPath) (st
fs.mu.RLock()
d, inode, err := fs.walkExistingLocked(ctx, rp)
fs.mu.RUnlock()
- fs.processDeferredDecRefs()
+ fs.processDeferredDecRefs(ctx)
if err != nil {
return "", err
}
@@ -526,7 +526,7 @@ func (fs *Filesystem) RenameAt(ctx context.Context, rp *vfs.ResolvingPath, oldPa
noReplace := opts.Flags&linux.RENAME_NOREPLACE != 0
fs.mu.Lock()
- defer fs.processDeferredDecRefsLocked()
+ defer fs.processDeferredDecRefsLocked(ctx)
defer fs.mu.Unlock()
// Resolve the destination directory first to verify that it's on this
@@ -584,7 +584,7 @@ func (fs *Filesystem) RenameAt(ctx context.Context, rp *vfs.ResolvingPath, oldPa
}
mntns := vfs.MountNamespaceFromContext(ctx)
- defer mntns.DecRef()
+ defer mntns.DecRef(ctx)
virtfs := rp.VirtualFilesystem()
// We can't deadlock here due to lock ordering because we're protected from
@@ -615,7 +615,7 @@ func (fs *Filesystem) RenameAt(ctx context.Context, rp *vfs.ResolvingPath, oldPa
dstDir.children = make(map[string]*Dentry)
}
dstDir.children[pc] = src
- virtfs.CommitRenameReplaceDentry(srcVFSD, replaced)
+ virtfs.CommitRenameReplaceDentry(ctx, srcVFSD, replaced)
return nil
}
@@ -624,7 +624,7 @@ func (fs *Filesystem) RmdirAt(ctx context.Context, rp *vfs.ResolvingPath) error
fs.mu.Lock()
defer fs.mu.Unlock()
vfsd, inode, err := fs.walkExistingLocked(ctx, rp)
- fs.processDeferredDecRefsLocked()
+ fs.processDeferredDecRefsLocked(ctx)
if err != nil {
return err
}
@@ -648,7 +648,7 @@ func (fs *Filesystem) RmdirAt(ctx context.Context, rp *vfs.ResolvingPath) error
defer parentDentry.dirMu.Unlock()
mntns := vfs.MountNamespaceFromContext(ctx)
- defer mntns.DecRef()
+ defer mntns.DecRef(ctx)
if err := virtfs.PrepareDeleteDentry(mntns, vfsd); err != nil {
return err
}
@@ -656,7 +656,7 @@ func (fs *Filesystem) RmdirAt(ctx context.Context, rp *vfs.ResolvingPath) error
virtfs.AbortDeleteDentry(vfsd)
return err
}
- virtfs.CommitDeleteDentry(vfsd)
+ virtfs.CommitDeleteDentry(ctx, vfsd)
return nil
}
@@ -665,7 +665,7 @@ func (fs *Filesystem) SetStatAt(ctx context.Context, rp *vfs.ResolvingPath, opts
fs.mu.RLock()
_, inode, err := fs.walkExistingLocked(ctx, rp)
fs.mu.RUnlock()
- fs.processDeferredDecRefs()
+ fs.processDeferredDecRefs(ctx)
if err != nil {
return err
}
@@ -680,7 +680,7 @@ func (fs *Filesystem) StatAt(ctx context.Context, rp *vfs.ResolvingPath, opts vf
fs.mu.RLock()
_, inode, err := fs.walkExistingLocked(ctx, rp)
fs.mu.RUnlock()
- fs.processDeferredDecRefs()
+ fs.processDeferredDecRefs(ctx)
if err != nil {
return linux.Statx{}, err
}
@@ -692,7 +692,7 @@ func (fs *Filesystem) StatFSAt(ctx context.Context, rp *vfs.ResolvingPath) (linu
fs.mu.RLock()
_, _, err := fs.walkExistingLocked(ctx, rp)
fs.mu.RUnlock()
- fs.processDeferredDecRefs()
+ fs.processDeferredDecRefs(ctx)
if err != nil {
return linux.Statfs{}, err
}
@@ -708,7 +708,7 @@ func (fs *Filesystem) SymlinkAt(ctx context.Context, rp *vfs.ResolvingPath, targ
fs.mu.Lock()
defer fs.mu.Unlock()
parentVFSD, parentInode, err := fs.walkParentDirLocked(ctx, rp)
- fs.processDeferredDecRefsLocked()
+ fs.processDeferredDecRefsLocked(ctx)
if err != nil {
return err
}
@@ -733,7 +733,7 @@ func (fs *Filesystem) UnlinkAt(ctx context.Context, rp *vfs.ResolvingPath) error
fs.mu.Lock()
defer fs.mu.Unlock()
vfsd, _, err := fs.walkExistingLocked(ctx, rp)
- fs.processDeferredDecRefsLocked()
+ fs.processDeferredDecRefsLocked(ctx)
if err != nil {
return err
}
@@ -753,7 +753,7 @@ func (fs *Filesystem) UnlinkAt(ctx context.Context, rp *vfs.ResolvingPath) error
parentDentry.dirMu.Lock()
defer parentDentry.dirMu.Unlock()
mntns := vfs.MountNamespaceFromContext(ctx)
- defer mntns.DecRef()
+ defer mntns.DecRef(ctx)
if err := virtfs.PrepareDeleteDentry(mntns, vfsd); err != nil {
return err
}
@@ -761,7 +761,7 @@ func (fs *Filesystem) UnlinkAt(ctx context.Context, rp *vfs.ResolvingPath) error
virtfs.AbortDeleteDentry(vfsd)
return err
}
- virtfs.CommitDeleteDentry(vfsd)
+ virtfs.CommitDeleteDentry(ctx, vfsd)
return nil
}
@@ -770,7 +770,7 @@ func (fs *Filesystem) BoundEndpointAt(ctx context.Context, rp *vfs.ResolvingPath
fs.mu.RLock()
_, inode, err := fs.walkExistingLocked(ctx, rp)
fs.mu.RUnlock()
- fs.processDeferredDecRefs()
+ fs.processDeferredDecRefs(ctx)
if err != nil {
return nil, err
}
@@ -785,7 +785,7 @@ func (fs *Filesystem) ListxattrAt(ctx context.Context, rp *vfs.ResolvingPath, si
fs.mu.RLock()
_, _, err := fs.walkExistingLocked(ctx, rp)
fs.mu.RUnlock()
- fs.processDeferredDecRefs()
+ fs.processDeferredDecRefs(ctx)
if err != nil {
return nil, err
}
@@ -798,7 +798,7 @@ func (fs *Filesystem) GetxattrAt(ctx context.Context, rp *vfs.ResolvingPath, opt
fs.mu.RLock()
_, _, err := fs.walkExistingLocked(ctx, rp)
fs.mu.RUnlock()
- fs.processDeferredDecRefs()
+ fs.processDeferredDecRefs(ctx)
if err != nil {
return "", err
}
@@ -811,7 +811,7 @@ func (fs *Filesystem) SetxattrAt(ctx context.Context, rp *vfs.ResolvingPath, opt
fs.mu.RLock()
_, _, err := fs.walkExistingLocked(ctx, rp)
fs.mu.RUnlock()
- fs.processDeferredDecRefs()
+ fs.processDeferredDecRefs(ctx)
if err != nil {
return err
}
@@ -824,7 +824,7 @@ func (fs *Filesystem) RemovexattrAt(ctx context.Context, rp *vfs.ResolvingPath,
fs.mu.RLock()
_, _, err := fs.walkExistingLocked(ctx, rp)
fs.mu.RUnlock()
- fs.processDeferredDecRefs()
+ fs.processDeferredDecRefs(ctx)
if err != nil {
return err
}
diff --git a/pkg/sentry/fsimpl/kernfs/inode_impl_util.go b/pkg/sentry/fsimpl/kernfs/inode_impl_util.go
index 579e627f0..c3efcf3ec 100644
--- a/pkg/sentry/fsimpl/kernfs/inode_impl_util.go
+++ b/pkg/sentry/fsimpl/kernfs/inode_impl_util.go
@@ -40,7 +40,7 @@ func (InodeNoopRefCount) IncRef() {
}
// DecRef implements Inode.DecRef.
-func (InodeNoopRefCount) DecRef() {
+func (InodeNoopRefCount) DecRef(context.Context) {
}
// TryIncRef implements Inode.TryIncRef.
@@ -49,7 +49,7 @@ func (InodeNoopRefCount) TryIncRef() bool {
}
// Destroy implements Inode.Destroy.
-func (InodeNoopRefCount) Destroy() {
+func (InodeNoopRefCount) Destroy(context.Context) {
}
// InodeDirectoryNoNewChildren partially implements the Inode interface.
@@ -366,12 +366,12 @@ func (o *OrderedChildren) Init(opts OrderedChildrenOptions) {
}
// DecRef implements Inode.DecRef.
-func (o *OrderedChildren) DecRef() {
- o.AtomicRefCount.DecRefWithDestructor(o.Destroy)
+func (o *OrderedChildren) DecRef(ctx context.Context) {
+ o.AtomicRefCount.DecRefWithDestructor(ctx, o.Destroy)
}
// Destroy cleans up resources referenced by this OrderedChildren.
-func (o *OrderedChildren) Destroy() {
+func (o *OrderedChildren) Destroy(context.Context) {
o.mu.Lock()
defer o.mu.Unlock()
o.order.Reset()
diff --git a/pkg/sentry/fsimpl/kernfs/kernfs.go b/pkg/sentry/fsimpl/kernfs/kernfs.go
index 46f207664..080118841 100644
--- a/pkg/sentry/fsimpl/kernfs/kernfs.go
+++ b/pkg/sentry/fsimpl/kernfs/kernfs.go
@@ -116,17 +116,17 @@ func (fs *Filesystem) deferDecRef(d *vfs.Dentry) {
// processDeferredDecRefs calls vfs.Dentry.DecRef on all dentries in the
// droppedDentries list. See comment on Filesystem.mu.
-func (fs *Filesystem) processDeferredDecRefs() {
+func (fs *Filesystem) processDeferredDecRefs(ctx context.Context) {
fs.mu.Lock()
- fs.processDeferredDecRefsLocked()
+ fs.processDeferredDecRefsLocked(ctx)
fs.mu.Unlock()
}
// Precondition: fs.mu must be held for writing.
-func (fs *Filesystem) processDeferredDecRefsLocked() {
+func (fs *Filesystem) processDeferredDecRefsLocked(ctx context.Context) {
fs.droppedDentriesMu.Lock()
for _, d := range fs.droppedDentries {
- d.DecRef()
+ d.DecRef(ctx)
}
fs.droppedDentries = fs.droppedDentries[:0] // Keep slice memory for reuse.
fs.droppedDentriesMu.Unlock()
@@ -212,16 +212,16 @@ func (d *Dentry) isSymlink() bool {
}
// DecRef implements vfs.DentryImpl.DecRef.
-func (d *Dentry) DecRef() {
- d.AtomicRefCount.DecRefWithDestructor(d.destroy)
+func (d *Dentry) DecRef(ctx context.Context) {
+ d.AtomicRefCount.DecRefWithDestructor(ctx, d.destroy)
}
// Precondition: Dentry must be removed from VFS' dentry cache.
-func (d *Dentry) destroy() {
- d.inode.DecRef() // IncRef from Init.
+func (d *Dentry) destroy(ctx context.Context) {
+ d.inode.DecRef(ctx) // IncRef from Init.
d.inode = nil
if d.parent != nil {
- d.parent.DecRef() // IncRef from Dentry.InsertChild.
+ d.parent.DecRef(ctx) // IncRef from Dentry.InsertChild.
}
}
@@ -230,7 +230,7 @@ func (d *Dentry) destroy() {
// Although Linux technically supports inotify on pseudo filesystems (inotify
// is implemented at the vfs layer), it is not particularly useful. It is left
// unimplemented until someone actually needs it.
-func (d *Dentry) InotifyWithParent(events, cookie uint32, et vfs.EventType) {}
+func (d *Dentry) InotifyWithParent(ctx context.Context, events, cookie uint32, et vfs.EventType) {}
// Watches implements vfs.DentryImpl.Watches.
func (d *Dentry) Watches() *vfs.Watches {
@@ -238,7 +238,7 @@ func (d *Dentry) Watches() *vfs.Watches {
}
// OnZeroWatches implements vfs.Dentry.OnZeroWatches.
-func (d *Dentry) OnZeroWatches() {}
+func (d *Dentry) OnZeroWatches(context.Context) {}
// InsertChild inserts child into the vfs dentry cache with the given name under
// this dentry. This does not update the directory inode, so calling this on
@@ -326,12 +326,12 @@ type Inode interface {
type inodeRefs interface {
IncRef()
- DecRef()
+ DecRef(ctx context.Context)
TryIncRef() bool
// Destroy is called when the inode reaches zero references. Destroy release
// all resources (references) on objects referenced by the inode, including
// any child dentries.
- Destroy()
+ Destroy(ctx context.Context)
}
type inodeMetadata interface {
diff --git a/pkg/sentry/fsimpl/overlay/copy_up.go b/pkg/sentry/fsimpl/overlay/copy_up.go
index 8f8dcfafe..b3d19ff82 100644
--- a/pkg/sentry/fsimpl/overlay/copy_up.go
+++ b/pkg/sentry/fsimpl/overlay/copy_up.go
@@ -98,7 +98,7 @@ func (d *dentry) copyUpLocked(ctx context.Context) error {
if err != nil {
return err
}
- defer oldFD.DecRef()
+ defer oldFD.DecRef(ctx)
newFD, err := vfsObj.OpenAt(ctx, d.fs.creds, &newpop, &vfs.OpenOptions{
Flags: linux.O_WRONLY | linux.O_CREAT | linux.O_EXCL,
Mode: linux.FileMode(d.mode &^ linux.S_IFMT),
@@ -106,7 +106,7 @@ func (d *dentry) copyUpLocked(ctx context.Context) error {
if err != nil {
return err
}
- defer newFD.DecRef()
+ defer newFD.DecRef(ctx)
bufIOSeq := usermem.BytesIOSequence(make([]byte, 32*1024)) // arbitrary buffer size
for {
readN, readErr := oldFD.Read(ctx, bufIOSeq, vfs.ReadOptions{})
@@ -241,13 +241,13 @@ func (d *dentry) copyUpLocked(ctx context.Context) error {
Mask: linux.STATX_INO,
})
if err != nil {
- d.upperVD.DecRef()
+ d.upperVD.DecRef(ctx)
d.upperVD = vfs.VirtualDentry{}
cleanupUndoCopyUp()
return err
}
if upperStat.Mask&linux.STATX_INO == 0 {
- d.upperVD.DecRef()
+ d.upperVD.DecRef(ctx)
d.upperVD = vfs.VirtualDentry{}
cleanupUndoCopyUp()
return syserror.EREMOTE
diff --git a/pkg/sentry/fsimpl/overlay/directory.go b/pkg/sentry/fsimpl/overlay/directory.go
index f5c2462a5..fccb94105 100644
--- a/pkg/sentry/fsimpl/overlay/directory.go
+++ b/pkg/sentry/fsimpl/overlay/directory.go
@@ -46,7 +46,7 @@ func (d *dentry) collectWhiteoutsForRmdirLocked(ctx context.Context) (map[string
readdirErr = err
return false
}
- defer layerFD.DecRef()
+ defer layerFD.DecRef(ctx)
// Reuse slice allocated for maybeWhiteouts from a previous layer to
// reduce allocations.
@@ -108,7 +108,7 @@ type directoryFD struct {
}
// Release implements vfs.FileDescriptionImpl.Release.
-func (fd *directoryFD) Release() {
+func (fd *directoryFD) Release(ctx context.Context) {
}
// IterDirents implements vfs.FileDescriptionImpl.IterDirents.
@@ -177,7 +177,7 @@ func (d *dentry) getDirents(ctx context.Context) ([]vfs.Dirent, error) {
readdirErr = err
return false
}
- defer layerFD.DecRef()
+ defer layerFD.DecRef(ctx)
// Reuse slice allocated for maybeWhiteouts from a previous layer to
// reduce allocations.
@@ -282,6 +282,6 @@ func (fd *directoryFD) Sync(ctx context.Context) error {
return err
}
err = upperFD.Sync(ctx)
- upperFD.DecRef()
+ upperFD.DecRef(ctx)
return err
}
diff --git a/pkg/sentry/fsimpl/overlay/filesystem.go b/pkg/sentry/fsimpl/overlay/filesystem.go
index 6b705e955..986b36ead 100644
--- a/pkg/sentry/fsimpl/overlay/filesystem.go
+++ b/pkg/sentry/fsimpl/overlay/filesystem.go
@@ -77,7 +77,7 @@ func putDentrySlice(ds *[]*dentry) {
// but dentry slices are allocated lazily, and it's much easier to say "defer
// fs.renameMuRUnlockAndCheckDrop(&ds)" than "defer func() {
// fs.renameMuRUnlockAndCheckDrop(ds) }()" to work around this.
-func (fs *filesystem) renameMuRUnlockAndCheckDrop(ds **[]*dentry) {
+func (fs *filesystem) renameMuRUnlockAndCheckDrop(ctx context.Context, ds **[]*dentry) {
fs.renameMu.RUnlock()
if *ds == nil {
return
@@ -85,20 +85,20 @@ func (fs *filesystem) renameMuRUnlockAndCheckDrop(ds **[]*dentry) {
if len(**ds) != 0 {
fs.renameMu.Lock()
for _, d := range **ds {
- d.checkDropLocked()
+ d.checkDropLocked(ctx)
}
fs.renameMu.Unlock()
}
putDentrySlice(*ds)
}
-func (fs *filesystem) renameMuUnlockAndCheckDrop(ds **[]*dentry) {
+func (fs *filesystem) renameMuUnlockAndCheckDrop(ctx context.Context, ds **[]*dentry) {
if *ds == nil {
fs.renameMu.Unlock()
return
}
for _, d := range **ds {
- d.checkDropLocked()
+ d.checkDropLocked(ctx)
}
fs.renameMu.Unlock()
putDentrySlice(*ds)
@@ -126,13 +126,13 @@ afterSymlink:
return d, nil
}
if name == ".." {
- if isRoot, err := rp.CheckRoot(&d.vfsd); err != nil {
+ if isRoot, err := rp.CheckRoot(ctx, &d.vfsd); err != nil {
return nil, err
} else if isRoot || d.parent == nil {
rp.Advance()
return d, nil
}
- if err := rp.CheckMount(&d.parent.vfsd); err != nil {
+ if err := rp.CheckMount(ctx, &d.parent.vfsd); err != nil {
return nil, err
}
rp.Advance()
@@ -142,7 +142,7 @@ afterSymlink:
if err != nil {
return nil, err
}
- if err := rp.CheckMount(&child.vfsd); err != nil {
+ if err := rp.CheckMount(ctx, &child.vfsd); err != nil {
return nil, err
}
if child.isSymlink() && mayFollowSymlinks && rp.ShouldFollowSymlink() {
@@ -272,11 +272,11 @@ func (fs *filesystem) lookupLocked(ctx context.Context, parent *dentry, name str
})
if lookupErr != nil {
- child.destroyLocked()
+ child.destroyLocked(ctx)
return nil, lookupErr
}
if !existsOnAnyLayer {
- child.destroyLocked()
+ child.destroyLocked(ctx)
return nil, syserror.ENOENT
}
@@ -430,7 +430,7 @@ func (fs *filesystem) resolveLocked(ctx context.Context, rp *vfs.ResolvingPath,
func (fs *filesystem) doCreateAt(ctx context.Context, rp *vfs.ResolvingPath, dir bool, create func(parent *dentry, name string, haveUpperWhiteout bool) error) error {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckDrop(&ds)
+ defer fs.renameMuRUnlockAndCheckDrop(ctx, &ds)
start := rp.Start().Impl().(*dentry)
parent, err := fs.walkParentDirLocked(ctx, rp, start, &ds)
if err != nil {
@@ -501,7 +501,7 @@ func (fs *filesystem) cleanupRecreateWhiteout(ctx context.Context, vfsObj *vfs.V
func (fs *filesystem) AccessAt(ctx context.Context, rp *vfs.ResolvingPath, creds *auth.Credentials, ats vfs.AccessTypes) error {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckDrop(&ds)
+ defer fs.renameMuRUnlockAndCheckDrop(ctx, &ds)
d, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
return err
@@ -513,7 +513,7 @@ func (fs *filesystem) AccessAt(ctx context.Context, rp *vfs.ResolvingPath, creds
func (fs *filesystem) BoundEndpointAt(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.BoundEndpointOptions) (transport.BoundEndpoint, error) {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckDrop(&ds)
+ defer fs.renameMuRUnlockAndCheckDrop(ctx, &ds)
d, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
return nil, err
@@ -532,7 +532,7 @@ func (fs *filesystem) BoundEndpointAt(ctx context.Context, rp *vfs.ResolvingPath
func (fs *filesystem) GetDentryAt(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.GetDentryOptions) (*vfs.Dentry, error) {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckDrop(&ds)
+ defer fs.renameMuRUnlockAndCheckDrop(ctx, &ds)
d, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
return nil, err
@@ -553,7 +553,7 @@ func (fs *filesystem) GetDentryAt(ctx context.Context, rp *vfs.ResolvingPath, op
func (fs *filesystem) GetParentDentryAt(ctx context.Context, rp *vfs.ResolvingPath) (*vfs.Dentry, error) {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckDrop(&ds)
+ defer fs.renameMuRUnlockAndCheckDrop(ctx, &ds)
start := rp.Start().Impl().(*dentry)
d, err := fs.walkParentDirLocked(ctx, rp, start, &ds)
if err != nil {
@@ -720,7 +720,7 @@ func (fs *filesystem) OpenAt(ctx context.Context, rp *vfs.ResolvingPath, opts vf
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckDrop(&ds)
+ defer fs.renameMuRUnlockAndCheckDrop(ctx, &ds)
start := rp.Start().Impl().(*dentry)
if rp.Done() {
@@ -825,7 +825,7 @@ func (d *dentry) openLocked(ctx context.Context, rp *vfs.ResolvingPath, opts *vf
fd.LockFD.Init(&d.locks)
layerFDOpts := layerFD.Options()
if err := fd.vfsfd.Init(fd, layerFlags, mnt, &d.vfsd, &layerFDOpts); err != nil {
- layerFD.DecRef()
+ layerFD.DecRef(ctx)
return nil, err
}
return &fd.vfsfd, nil
@@ -920,7 +920,7 @@ func (fs *filesystem) createAndOpenLocked(ctx context.Context, rp *vfs.Resolving
fd.LockFD.Init(&child.locks)
upperFDOpts := upperFD.Options()
if err := fd.vfsfd.Init(fd, upperFlags, mnt, &child.vfsd, &upperFDOpts); err != nil {
- upperFD.DecRef()
+ upperFD.DecRef(ctx)
// Don't bother with cleanup; the file was created successfully, we
// just can't open it anymore for some reason.
return nil, err
@@ -932,7 +932,7 @@ func (fs *filesystem) createAndOpenLocked(ctx context.Context, rp *vfs.Resolving
func (fs *filesystem) ReadlinkAt(ctx context.Context, rp *vfs.ResolvingPath) (string, error) {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckDrop(&ds)
+ defer fs.renameMuRUnlockAndCheckDrop(ctx, &ds)
d, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
return "", err
@@ -952,7 +952,7 @@ func (fs *filesystem) RenameAt(ctx context.Context, rp *vfs.ResolvingPath, oldPa
var ds *[]*dentry
fs.renameMu.Lock()
- defer fs.renameMuUnlockAndCheckDrop(&ds)
+ defer fs.renameMuUnlockAndCheckDrop(ctx, &ds)
newParent, err := fs.walkParentDirLocked(ctx, rp, rp.Start().Impl().(*dentry), &ds)
if err != nil {
return err
@@ -979,7 +979,7 @@ func (fs *filesystem) RenameAt(ctx context.Context, rp *vfs.ResolvingPath, oldPa
func (fs *filesystem) RmdirAt(ctx context.Context, rp *vfs.ResolvingPath) error {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckDrop(&ds)
+ defer fs.renameMuRUnlockAndCheckDrop(ctx, &ds)
start := rp.Start().Impl().(*dentry)
parent, err := fs.walkParentDirLocked(ctx, rp, start, &ds)
if err != nil {
@@ -1001,7 +1001,7 @@ func (fs *filesystem) RmdirAt(ctx context.Context, rp *vfs.ResolvingPath) error
}
vfsObj := rp.VirtualFilesystem()
mntns := vfs.MountNamespaceFromContext(ctx)
- defer mntns.DecRef()
+ defer mntns.DecRef(ctx)
parent.dirMu.Lock()
defer parent.dirMu.Unlock()
@@ -1086,7 +1086,7 @@ func (fs *filesystem) RmdirAt(ctx context.Context, rp *vfs.ResolvingPath) error
return err
}
- vfsObj.CommitDeleteDentry(&child.vfsd)
+ vfsObj.CommitDeleteDentry(ctx, &child.vfsd)
delete(parent.children, name)
ds = appendDentry(ds, child)
parent.dirents = nil
@@ -1097,7 +1097,7 @@ func (fs *filesystem) RmdirAt(ctx context.Context, rp *vfs.ResolvingPath) error
func (fs *filesystem) SetStatAt(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.SetStatOptions) error {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckDrop(&ds)
+ defer fs.renameMuRUnlockAndCheckDrop(ctx, &ds)
d, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
return err
@@ -1132,7 +1132,7 @@ func (fs *filesystem) SetStatAt(ctx context.Context, rp *vfs.ResolvingPath, opts
func (fs *filesystem) StatAt(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.StatOptions) (linux.Statx, error) {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckDrop(&ds)
+ defer fs.renameMuRUnlockAndCheckDrop(ctx, &ds)
d, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
return linux.Statx{}, err
@@ -1160,7 +1160,7 @@ func (fs *filesystem) StatAt(ctx context.Context, rp *vfs.ResolvingPath, opts vf
func (fs *filesystem) StatFSAt(ctx context.Context, rp *vfs.ResolvingPath) (linux.Statfs, error) {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckDrop(&ds)
+ defer fs.renameMuRUnlockAndCheckDrop(ctx, &ds)
_, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
return linux.Statfs{}, err
@@ -1211,7 +1211,7 @@ func (fs *filesystem) SymlinkAt(ctx context.Context, rp *vfs.ResolvingPath, targ
func (fs *filesystem) UnlinkAt(ctx context.Context, rp *vfs.ResolvingPath) error {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckDrop(&ds)
+ defer fs.renameMuRUnlockAndCheckDrop(ctx, &ds)
start := rp.Start().Impl().(*dentry)
parent, err := fs.walkParentDirLocked(ctx, rp, start, &ds)
if err != nil {
@@ -1233,7 +1233,7 @@ func (fs *filesystem) UnlinkAt(ctx context.Context, rp *vfs.ResolvingPath) error
}
vfsObj := rp.VirtualFilesystem()
mntns := vfs.MountNamespaceFromContext(ctx)
- defer mntns.DecRef()
+ defer mntns.DecRef(ctx)
parent.dirMu.Lock()
defer parent.dirMu.Unlock()
@@ -1298,7 +1298,7 @@ func (fs *filesystem) UnlinkAt(ctx context.Context, rp *vfs.ResolvingPath) error
}
if child != nil {
- vfsObj.CommitDeleteDentry(&child.vfsd)
+ vfsObj.CommitDeleteDentry(ctx, &child.vfsd)
delete(parent.children, name)
ds = appendDentry(ds, child)
}
@@ -1310,7 +1310,7 @@ func (fs *filesystem) UnlinkAt(ctx context.Context, rp *vfs.ResolvingPath) error
func (fs *filesystem) ListxattrAt(ctx context.Context, rp *vfs.ResolvingPath, size uint64) ([]string, error) {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckDrop(&ds)
+ defer fs.renameMuRUnlockAndCheckDrop(ctx, &ds)
_, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
return nil, err
@@ -1324,7 +1324,7 @@ func (fs *filesystem) ListxattrAt(ctx context.Context, rp *vfs.ResolvingPath, si
func (fs *filesystem) GetxattrAt(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.GetxattrOptions) (string, error) {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckDrop(&ds)
+ defer fs.renameMuRUnlockAndCheckDrop(ctx, &ds)
_, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
return "", err
@@ -1336,7 +1336,7 @@ func (fs *filesystem) GetxattrAt(ctx context.Context, rp *vfs.ResolvingPath, opt
func (fs *filesystem) SetxattrAt(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.SetxattrOptions) error {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckDrop(&ds)
+ defer fs.renameMuRUnlockAndCheckDrop(ctx, &ds)
_, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
return err
@@ -1348,7 +1348,7 @@ func (fs *filesystem) SetxattrAt(ctx context.Context, rp *vfs.ResolvingPath, opt
func (fs *filesystem) RemovexattrAt(ctx context.Context, rp *vfs.ResolvingPath, name string) error {
var ds *[]*dentry
fs.renameMu.RLock()
- defer fs.renameMuRUnlockAndCheckDrop(&ds)
+ defer fs.renameMuRUnlockAndCheckDrop(ctx, &ds)
_, err := fs.resolveLocked(ctx, rp, &ds)
if err != nil {
return err
diff --git a/pkg/sentry/fsimpl/overlay/non_directory.go b/pkg/sentry/fsimpl/overlay/non_directory.go
index c0749e711..d3060a481 100644
--- a/pkg/sentry/fsimpl/overlay/non_directory.go
+++ b/pkg/sentry/fsimpl/overlay/non_directory.go
@@ -81,11 +81,11 @@ func (fd *nonDirectoryFD) currentFDLocked(ctx context.Context) (*vfs.FileDescrip
oldOff, oldOffErr := fd.cachedFD.Seek(ctx, 0, linux.SEEK_CUR)
if oldOffErr == nil {
if _, err := upperFD.Seek(ctx, oldOff, linux.SEEK_SET); err != nil {
- upperFD.DecRef()
+ upperFD.DecRef(ctx)
return nil, err
}
}
- fd.cachedFD.DecRef()
+ fd.cachedFD.DecRef(ctx)
fd.copiedUp = true
fd.cachedFD = upperFD
fd.cachedFlags = statusFlags
@@ -99,8 +99,8 @@ func (fd *nonDirectoryFD) currentFDLocked(ctx context.Context) (*vfs.FileDescrip
}
// Release implements vfs.FileDescriptionImpl.Release.
-func (fd *nonDirectoryFD) Release() {
- fd.cachedFD.DecRef()
+func (fd *nonDirectoryFD) Release(ctx context.Context) {
+ fd.cachedFD.DecRef(ctx)
fd.cachedFD = nil
}
@@ -138,7 +138,7 @@ func (fd *nonDirectoryFD) Stat(ctx context.Context, opts vfs.StatOptions) (linux
Mask: layerMask,
Sync: opts.Sync,
})
- wrappedFD.DecRef()
+ wrappedFD.DecRef(ctx)
if err != nil {
return linux.Statx{}, err
}
@@ -187,7 +187,7 @@ func (fd *nonDirectoryFD) PRead(ctx context.Context, dst usermem.IOSequence, off
if err != nil {
return 0, err
}
- defer wrappedFD.DecRef()
+ defer wrappedFD.DecRef(ctx)
return wrappedFD.PRead(ctx, dst, offset, opts)
}
@@ -209,7 +209,7 @@ func (fd *nonDirectoryFD) PWrite(ctx context.Context, src usermem.IOSequence, of
if err != nil {
return 0, err
}
- defer wrappedFD.DecRef()
+ defer wrappedFD.DecRef(ctx)
return wrappedFD.PWrite(ctx, src, offset, opts)
}
@@ -250,7 +250,7 @@ func (fd *nonDirectoryFD) Sync(ctx context.Context) error {
return err
}
wrappedFD.IncRef()
- defer wrappedFD.DecRef()
+ defer wrappedFD.DecRef(ctx)
fd.mu.Unlock()
return wrappedFD.Sync(ctx)
}
@@ -261,6 +261,6 @@ func (fd *nonDirectoryFD) ConfigureMMap(ctx context.Context, opts *memmap.MMapOp
if err != nil {
return err
}
- defer wrappedFD.DecRef()
+ defer wrappedFD.DecRef(ctx)
return wrappedFD.ConfigureMMap(ctx, opts)
}
diff --git a/pkg/sentry/fsimpl/overlay/overlay.go b/pkg/sentry/fsimpl/overlay/overlay.go
index e720d4825..75cc006bf 100644
--- a/pkg/sentry/fsimpl/overlay/overlay.go
+++ b/pkg/sentry/fsimpl/overlay/overlay.go
@@ -123,7 +123,7 @@ func (fstype FilesystemType) GetFilesystem(ctx context.Context, vfsObj *vfs.Virt
// filesystem with any number of lower layers.
} else {
vfsroot := vfs.RootFromContext(ctx)
- defer vfsroot.DecRef()
+ defer vfsroot.DecRef(ctx)
upperPathname, ok := mopts["upperdir"]
if ok {
delete(mopts, "upperdir")
@@ -147,13 +147,13 @@ func (fstype FilesystemType) GetFilesystem(ctx context.Context, vfsObj *vfs.Virt
ctx.Warningf("overlay.FilesystemType.GetFilesystem: failed to resolve upperdir %q: %v", upperPathname, err)
return nil, nil, err
}
- defer upperRoot.DecRef()
+ defer upperRoot.DecRef(ctx)
privateUpperRoot, err := clonePrivateMount(vfsObj, upperRoot, false /* forceReadOnly */)
if err != nil {
ctx.Warningf("overlay.FilesystemType.GetFilesystem: failed to make private bind mount of upperdir %q: %v", upperPathname, err)
return nil, nil, err
}
- defer privateUpperRoot.DecRef()
+ defer privateUpperRoot.DecRef(ctx)
fsopts.UpperRoot = privateUpperRoot
}
lowerPathnamesStr, ok := mopts["lowerdir"]
@@ -190,13 +190,13 @@ func (fstype FilesystemType) GetFilesystem(ctx context.Context, vfsObj *vfs.Virt
ctx.Warningf("overlay.FilesystemType.GetFilesystem: failed to resolve lowerdir %q: %v", lowerPathname, err)
return nil, nil, err
}
- defer lowerRoot.DecRef()
+ defer lowerRoot.DecRef(ctx)
privateLowerRoot, err := clonePrivateMount(vfsObj, lowerRoot, true /* forceReadOnly */)
if err != nil {
ctx.Warningf("overlay.FilesystemType.GetFilesystem: failed to make private bind mount of lowerdir %q: %v", lowerPathname, err)
return nil, nil, err
}
- defer privateLowerRoot.DecRef()
+ defer privateLowerRoot.DecRef(ctx)
fsopts.LowerRoots = append(fsopts.LowerRoots, privateLowerRoot)
}
}
@@ -264,19 +264,19 @@ func (fstype FilesystemType) GetFilesystem(ctx context.Context, vfsObj *vfs.Virt
Mask: rootStatMask,
})
if err != nil {
- root.destroyLocked()
- fs.vfsfs.DecRef()
+ root.destroyLocked(ctx)
+ fs.vfsfs.DecRef(ctx)
return nil, nil, err
}
if rootStat.Mask&rootStatMask != rootStatMask {
- root.destroyLocked()
- fs.vfsfs.DecRef()
+ root.destroyLocked(ctx)
+ fs.vfsfs.DecRef(ctx)
return nil, nil, syserror.EREMOTE
}
if isWhiteout(&rootStat) {
ctx.Warningf("overlay.FilesystemType.GetFilesystem: filesystem root is a whiteout")
- root.destroyLocked()
- fs.vfsfs.DecRef()
+ root.destroyLocked(ctx)
+ fs.vfsfs.DecRef(ctx)
return nil, nil, syserror.EINVAL
}
root.mode = uint32(rootStat.Mode)
@@ -319,17 +319,17 @@ func clonePrivateMount(vfsObj *vfs.VirtualFilesystem, vd vfs.VirtualDentry, forc
}
// Release implements vfs.FilesystemImpl.Release.
-func (fs *filesystem) Release() {
+func (fs *filesystem) Release(ctx context.Context) {
vfsObj := fs.vfsfs.VirtualFilesystem()
vfsObj.PutAnonBlockDevMinor(fs.dirDevMinor)
for _, lowerDevMinor := range fs.lowerDevMinors {
vfsObj.PutAnonBlockDevMinor(lowerDevMinor)
}
if fs.opts.UpperRoot.Ok() {
- fs.opts.UpperRoot.DecRef()
+ fs.opts.UpperRoot.DecRef(ctx)
}
for _, lowerRoot := range fs.opts.LowerRoots {
- lowerRoot.DecRef()
+ lowerRoot.DecRef(ctx)
}
}
@@ -452,10 +452,10 @@ func (d *dentry) TryIncRef() bool {
}
// DecRef implements vfs.DentryImpl.DecRef.
-func (d *dentry) DecRef() {
+func (d *dentry) DecRef(ctx context.Context) {
if refs := atomic.AddInt64(&d.refs, -1); refs == 0 {
d.fs.renameMu.Lock()
- d.checkDropLocked()
+ d.checkDropLocked(ctx)
d.fs.renameMu.Unlock()
} else if refs < 0 {
panic("overlay.dentry.DecRef() called without holding a reference")
@@ -466,7 +466,7 @@ func (d *dentry) DecRef() {
// becomes deleted.
//
// Preconditions: d.fs.renameMu must be locked for writing.
-func (d *dentry) checkDropLocked() {
+func (d *dentry) checkDropLocked(ctx context.Context) {
// Dentries with a positive reference count must be retained. (The only way
// to obtain a reference on a dentry with zero references is via path
// resolution, which requires renameMu, so if d.refs is zero then it will
@@ -476,14 +476,14 @@ func (d *dentry) checkDropLocked() {
return
}
// Refs is still zero; destroy it.
- d.destroyLocked()
+ d.destroyLocked(ctx)
return
}
// destroyLocked destroys the dentry.
//
// Preconditions: d.fs.renameMu must be locked for writing. d.refs == 0.
-func (d *dentry) destroyLocked() {
+func (d *dentry) destroyLocked(ctx context.Context) {
switch atomic.LoadInt64(&d.refs) {
case 0:
// Mark the dentry destroyed.
@@ -495,10 +495,10 @@ func (d *dentry) destroyLocked() {
}
if d.upperVD.Ok() {
- d.upperVD.DecRef()
+ d.upperVD.DecRef(ctx)
}
for _, lowerVD := range d.lowerVDs {
- lowerVD.DecRef()
+ lowerVD.DecRef(ctx)
}
if d.parent != nil {
@@ -510,7 +510,7 @@ func (d *dentry) destroyLocked() {
// Drop the reference held by d on its parent without recursively
// locking d.fs.renameMu.
if refs := atomic.AddInt64(&d.parent.refs, -1); refs == 0 {
- d.parent.checkDropLocked()
+ d.parent.checkDropLocked(ctx)
} else if refs < 0 {
panic("overlay.dentry.DecRef() called without holding a reference")
}
@@ -518,7 +518,7 @@ func (d *dentry) destroyLocked() {
}
// InotifyWithParent implements vfs.DentryImpl.InotifyWithParent.
-func (d *dentry) InotifyWithParent(events uint32, cookie uint32, et vfs.EventType) {
+func (d *dentry) InotifyWithParent(ctx context.Context, events uint32, cookie uint32, et vfs.EventType) {
// TODO(gvisor.dev/issue/1479): Implement inotify.
}
@@ -531,7 +531,7 @@ func (d *dentry) Watches() *vfs.Watches {
// OnZeroWatches implements vfs.DentryImpl.OnZeroWatches.
//
// TODO(gvisor.dev/issue/1479): Implement inotify.
-func (d *dentry) OnZeroWatches() {}
+func (d *dentry) OnZeroWatches(context.Context) {}
// iterLayers invokes yield on each layer comprising d, from top to bottom. If
// any call to yield returns false, iterLayer stops iteration.
diff --git a/pkg/sentry/fsimpl/pipefs/pipefs.go b/pkg/sentry/fsimpl/pipefs/pipefs.go
index 811f80a5f..2ca793db9 100644
--- a/pkg/sentry/fsimpl/pipefs/pipefs.go
+++ b/pkg/sentry/fsimpl/pipefs/pipefs.go
@@ -63,9 +63,9 @@ func NewFilesystem(vfsObj *vfs.VirtualFilesystem) (*vfs.Filesystem, error) {
}
// Release implements vfs.FilesystemImpl.Release.
-func (fs *filesystem) Release() {
+func (fs *filesystem) Release(ctx context.Context) {
fs.Filesystem.VFSFilesystem().VirtualFilesystem().PutAnonBlockDevMinor(fs.devMinor)
- fs.Filesystem.Release()
+ fs.Filesystem.Release(ctx)
}
// PrependPath implements vfs.FilesystemImpl.PrependPath.
@@ -160,6 +160,6 @@ func NewConnectedPipeFDs(ctx context.Context, mnt *vfs.Mount, flags uint32) (*vf
inode := newInode(ctx, fs)
var d kernfs.Dentry
d.Init(inode)
- defer d.DecRef()
+ defer d.DecRef(ctx)
return inode.pipe.ReaderWriterPair(mnt, d.VFSDentry(), flags)
}
diff --git a/pkg/sentry/fsimpl/proc/filesystem.go b/pkg/sentry/fsimpl/proc/filesystem.go
index 609210253..2463d51cd 100644
--- a/pkg/sentry/fsimpl/proc/filesystem.go
+++ b/pkg/sentry/fsimpl/proc/filesystem.go
@@ -77,9 +77,9 @@ func (ft FilesystemType) GetFilesystem(ctx context.Context, vfsObj *vfs.VirtualF
}
// Release implements vfs.FilesystemImpl.Release.
-func (fs *filesystem) Release() {
+func (fs *filesystem) Release(ctx context.Context) {
fs.Filesystem.VFSFilesystem().VirtualFilesystem().PutAnonBlockDevMinor(fs.devMinor)
- fs.Filesystem.Release()
+ fs.Filesystem.Release(ctx)
}
// dynamicInode is an overfitted interface for common Inodes with
diff --git a/pkg/sentry/fsimpl/proc/task_fds.go b/pkg/sentry/fsimpl/proc/task_fds.go
index fea29e5f0..f0d3f7f5e 100644
--- a/pkg/sentry/fsimpl/proc/task_fds.go
+++ b/pkg/sentry/fsimpl/proc/task_fds.go
@@ -43,12 +43,12 @@ func getTaskFD(t *kernel.Task, fd int32) (*vfs.FileDescription, kernel.FDFlags)
return file, flags
}
-func taskFDExists(t *kernel.Task, fd int32) bool {
+func taskFDExists(ctx context.Context, t *kernel.Task, fd int32) bool {
file, _ := getTaskFD(t, fd)
if file == nil {
return false
}
- file.DecRef()
+ file.DecRef(ctx)
return true
}
@@ -68,7 +68,7 @@ func (i *fdDir) IterDirents(ctx context.Context, cb vfs.IterDirentsCallback, off
var fds []int32
i.task.WithMuLocked(func(t *kernel.Task) {
if fdTable := t.FDTable(); fdTable != nil {
- fds = fdTable.GetFDs()
+ fds = fdTable.GetFDs(ctx)
}
})
@@ -135,7 +135,7 @@ func (i *fdDirInode) Lookup(ctx context.Context, name string) (*vfs.Dentry, erro
return nil, syserror.ENOENT
}
fd := int32(fdInt)
- if !taskFDExists(i.task, fd) {
+ if !taskFDExists(ctx, i.task, fd) {
return nil, syserror.ENOENT
}
taskDentry := i.fs.newFDSymlink(i.task, fd, i.fs.NextIno())
@@ -204,9 +204,9 @@ func (s *fdSymlink) Readlink(ctx context.Context) (string, error) {
if file == nil {
return "", syserror.ENOENT
}
- defer file.DecRef()
+ defer file.DecRef(ctx)
root := vfs.RootFromContext(ctx)
- defer root.DecRef()
+ defer root.DecRef(ctx)
return s.task.Kernel().VFS().PathnameWithDeleted(ctx, root, file.VirtualDentry())
}
@@ -215,7 +215,7 @@ func (s *fdSymlink) Getlink(ctx context.Context, mnt *vfs.Mount) (vfs.VirtualDen
if file == nil {
return vfs.VirtualDentry{}, "", syserror.ENOENT
}
- defer file.DecRef()
+ defer file.DecRef(ctx)
vd := file.VirtualDentry()
vd.IncRef()
return vd, "", nil
@@ -258,7 +258,7 @@ func (i *fdInfoDirInode) Lookup(ctx context.Context, name string) (*vfs.Dentry,
return nil, syserror.ENOENT
}
fd := int32(fdInt)
- if !taskFDExists(i.task, fd) {
+ if !taskFDExists(ctx, i.task, fd) {
return nil, syserror.ENOENT
}
data := &fdInfoData{
@@ -297,7 +297,7 @@ func (d *fdInfoData) Generate(ctx context.Context, buf *bytes.Buffer) error {
if file == nil {
return syserror.ENOENT
}
- defer file.DecRef()
+ defer file.DecRef(ctx)
// TODO(b/121266871): Include pos, locks, and other data. For now we only
// have flags.
// See https://www.kernel.org/doc/Documentation/filesystems/proc.txt
diff --git a/pkg/sentry/fsimpl/proc/task_files.go b/pkg/sentry/fsimpl/proc/task_files.go
index 859b7d727..830b78949 100644
--- a/pkg/sentry/fsimpl/proc/task_files.go
+++ b/pkg/sentry/fsimpl/proc/task_files.go
@@ -677,7 +677,7 @@ func (s *exeSymlink) Readlink(ctx context.Context) (string, error) {
if err != nil {
return "", err
}
- defer exec.DecRef()
+ defer exec.DecRef(ctx)
return exec.PathnameWithDeleted(ctx), nil
}
@@ -692,7 +692,7 @@ func (s *exeSymlink) Getlink(ctx context.Context, _ *vfs.Mount) (vfs.VirtualDent
if err != nil {
return vfs.VirtualDentry{}, "", err
}
- defer exec.DecRef()
+ defer exec.DecRef(ctx)
vd := exec.(*fsbridge.VFSFile).FileDescription().VirtualDentry()
vd.IncRef()
@@ -748,7 +748,7 @@ func (i *mountInfoData) Generate(ctx context.Context, buf *bytes.Buffer) error {
// Root has been destroyed. Don't try to read mounts.
return nil
}
- defer rootDir.DecRef()
+ defer rootDir.DecRef(ctx)
i.task.Kernel().VFS().GenerateProcMountInfo(ctx, rootDir, buf)
return nil
}
@@ -779,7 +779,7 @@ func (i *mountsData) Generate(ctx context.Context, buf *bytes.Buffer) error {
// Root has been destroyed. Don't try to read mounts.
return nil
}
- defer rootDir.DecRef()
+ defer rootDir.DecRef(ctx)
i.task.Kernel().VFS().GenerateProcMounts(ctx, rootDir, buf)
return nil
}
@@ -825,7 +825,7 @@ func (s *namespaceSymlink) Getlink(ctx context.Context, mnt *vfs.Mount) (vfs.Vir
dentry.Init(&namespaceInode{})
vd := vfs.MakeVirtualDentry(mnt, dentry.VFSDentry())
vd.IncRef()
- dentry.DecRef()
+ dentry.DecRef(ctx)
return vd, "", nil
}
@@ -887,8 +887,8 @@ func (fd *namespaceFD) SetStat(ctx context.Context, opts vfs.SetStatOptions) err
}
// Release implements FileDescriptionImpl.
-func (fd *namespaceFD) Release() {
- fd.inode.DecRef()
+func (fd *namespaceFD) Release(ctx context.Context) {
+ fd.inode.DecRef(ctx)
}
// LockPOSIX implements vfs.FileDescriptionImpl.LockPOSIX.
diff --git a/pkg/sentry/fsimpl/proc/task_net.go b/pkg/sentry/fsimpl/proc/task_net.go
index 6bde27376..a4c884bf9 100644
--- a/pkg/sentry/fsimpl/proc/task_net.go
+++ b/pkg/sentry/fsimpl/proc/task_net.go
@@ -212,7 +212,7 @@ func (n *netUnixData) Generate(ctx context.Context, buf *bytes.Buffer) error {
continue
}
if family, _, _ := s.Impl().(socket.SocketVFS2).Type(); family != linux.AF_UNIX {
- s.DecRef()
+ s.DecRef(ctx)
// Not a unix socket.
continue
}
@@ -281,7 +281,7 @@ func (n *netUnixData) Generate(ctx context.Context, buf *bytes.Buffer) error {
}
fmt.Fprintf(buf, "\n")
- s.DecRef()
+ s.DecRef(ctx)
}
return nil
}
@@ -359,7 +359,7 @@ func commonGenerateTCP(ctx context.Context, buf *bytes.Buffer, k *kernel.Kernel,
panic(fmt.Sprintf("Found non-socket file in socket table: %+v", s))
}
if fa, stype, _ := sops.Type(); !(family == fa && stype == linux.SOCK_STREAM) {
- s.DecRef()
+ s.DecRef(ctx)
// Not tcp4 sockets.
continue
}
@@ -455,7 +455,7 @@ func commonGenerateTCP(ctx context.Context, buf *bytes.Buffer, k *kernel.Kernel,
fmt.Fprintf(buf, "\n")
- s.DecRef()
+ s.DecRef(ctx)
}
return nil
@@ -524,7 +524,7 @@ func (d *netUDPData) Generate(ctx context.Context, buf *bytes.Buffer) error {
panic(fmt.Sprintf("Found non-socket file in socket table: %+v", s))
}
if family, stype, _ := sops.Type(); family != linux.AF_INET || stype != linux.SOCK_DGRAM {
- s.DecRef()
+ s.DecRef(ctx)
// Not udp4 socket.
continue
}
@@ -600,7 +600,7 @@ func (d *netUDPData) Generate(ctx context.Context, buf *bytes.Buffer) error {
fmt.Fprintf(buf, "\n")
- s.DecRef()
+ s.DecRef(ctx)
}
return nil
}
diff --git a/pkg/sentry/fsimpl/signalfd/signalfd.go b/pkg/sentry/fsimpl/signalfd/signalfd.go
index 242ba9b5d..6297e1df4 100644
--- a/pkg/sentry/fsimpl/signalfd/signalfd.go
+++ b/pkg/sentry/fsimpl/signalfd/signalfd.go
@@ -54,7 +54,7 @@ var _ vfs.FileDescriptionImpl = (*SignalFileDescription)(nil)
// New creates a new signal fd.
func New(vfsObj *vfs.VirtualFilesystem, target *kernel.Task, mask linux.SignalSet, flags uint32) (*vfs.FileDescription, error) {
vd := vfsObj.NewAnonVirtualDentry("[signalfd]")
- defer vd.DecRef()
+ defer vd.DecRef(target)
sfd := &SignalFileDescription{
target: target,
mask: mask,
@@ -133,4 +133,4 @@ func (sfd *SignalFileDescription) EventUnregister(entry *waiter.Entry) {
}
// Release implements FileDescriptionImpl.Release()
-func (sfd *SignalFileDescription) Release() {}
+func (sfd *SignalFileDescription) Release(context.Context) {}
diff --git a/pkg/sentry/fsimpl/sockfs/sockfs.go b/pkg/sentry/fsimpl/sockfs/sockfs.go
index ee0828a15..c61818ff6 100644
--- a/pkg/sentry/fsimpl/sockfs/sockfs.go
+++ b/pkg/sentry/fsimpl/sockfs/sockfs.go
@@ -67,9 +67,9 @@ func NewFilesystem(vfsObj *vfs.VirtualFilesystem) (*vfs.Filesystem, error) {
}
// Release implements vfs.FilesystemImpl.Release.
-func (fs *filesystem) Release() {
+func (fs *filesystem) Release(ctx context.Context) {
fs.Filesystem.VFSFilesystem().VirtualFilesystem().PutAnonBlockDevMinor(fs.devMinor)
- fs.Filesystem.Release()
+ fs.Filesystem.Release(ctx)
}
// PrependPath implements vfs.FilesystemImpl.PrependPath.
diff --git a/pkg/sentry/fsimpl/sys/sys.go b/pkg/sentry/fsimpl/sys/sys.go
index 01ce30a4d..f81b0c38f 100644
--- a/pkg/sentry/fsimpl/sys/sys.go
+++ b/pkg/sentry/fsimpl/sys/sys.go
@@ -87,9 +87,9 @@ func (fsType FilesystemType) GetFilesystem(ctx context.Context, vfsObj *vfs.Virt
}
// Release implements vfs.FilesystemImpl.Release.
-func (fs *filesystem) Release() {
+func (fs *filesystem) Release(ctx context.Context) {
fs.Filesystem.VFSFilesystem().VirtualFilesystem().PutAnonBlockDevMinor(fs.devMinor)
- fs.Filesystem.Release()
+ fs.Filesystem.Release(ctx)
}
// dir implements kernfs.Inode.
diff --git a/pkg/sentry/fsimpl/timerfd/timerfd.go b/pkg/sentry/fsimpl/timerfd/timerfd.go
index 2dc90d484..86beaa0a8 100644
--- a/pkg/sentry/fsimpl/timerfd/timerfd.go
+++ b/pkg/sentry/fsimpl/timerfd/timerfd.go
@@ -47,9 +47,9 @@ var _ vfs.FileDescriptionImpl = (*TimerFileDescription)(nil)
var _ ktime.TimerListener = (*TimerFileDescription)(nil)
// New returns a new timer fd.
-func New(vfsObj *vfs.VirtualFilesystem, clock ktime.Clock, flags uint32) (*vfs.FileDescription, error) {
+func New(ctx context.Context, vfsObj *vfs.VirtualFilesystem, clock ktime.Clock, flags uint32) (*vfs.FileDescription, error) {
vd := vfsObj.NewAnonVirtualDentry("[timerfd]")
- defer vd.DecRef()
+ defer vd.DecRef(ctx)
tfd := &TimerFileDescription{}
tfd.timer = ktime.NewTimer(clock, tfd)
if err := tfd.vfsfd.Init(tfd, flags, vd.Mount(), vd.Dentry(), &vfs.FileDescriptionOptions{
@@ -129,7 +129,7 @@ func (tfd *TimerFileDescription) ResumeTimer() {
}
// Release implements FileDescriptionImpl.Release()
-func (tfd *TimerFileDescription) Release() {
+func (tfd *TimerFileDescription) Release(context.Context) {
tfd.timer.Destroy()
}
diff --git a/pkg/sentry/fsimpl/tmpfs/directory.go b/pkg/sentry/fsimpl/tmpfs/directory.go
index 0a1ad4765..78b4fc5be 100644
--- a/pkg/sentry/fsimpl/tmpfs/directory.go
+++ b/pkg/sentry/fsimpl/tmpfs/directory.go
@@ -95,7 +95,7 @@ type directoryFD struct {
}
// Release implements vfs.FileDescriptionImpl.Release.
-func (fd *directoryFD) Release() {
+func (fd *directoryFD) Release(ctx context.Context) {
if fd.iter != nil {
dir := fd.inode().impl.(*directory)
dir.iterMu.Lock()
@@ -110,7 +110,7 @@ func (fd *directoryFD) IterDirents(ctx context.Context, cb vfs.IterDirentsCallba
fs := fd.filesystem()
dir := fd.inode().impl.(*directory)
- defer fd.dentry().InotifyWithParent(linux.IN_ACCESS, 0, vfs.PathEvent)
+ defer fd.dentry().InotifyWithParent(ctx, linux.IN_ACCESS, 0, vfs.PathEvent)
// fs.mu is required to read d.parent and dentry.name.
fs.mu.RLock()
diff --git a/pkg/sentry/fsimpl/tmpfs/filesystem.go b/pkg/sentry/fsimpl/tmpfs/filesystem.go
index ef210a69b..fb77f95cc 100644
--- a/pkg/sentry/fsimpl/tmpfs/filesystem.go
+++ b/pkg/sentry/fsimpl/tmpfs/filesystem.go
@@ -40,7 +40,7 @@ func (fs *filesystem) Sync(ctx context.Context) error {
// stepLocked is loosely analogous to fs/namei.c:walk_component().
//
// Preconditions: filesystem.mu must be locked. !rp.Done().
-func stepLocked(rp *vfs.ResolvingPath, d *dentry) (*dentry, error) {
+func stepLocked(ctx context.Context, rp *vfs.ResolvingPath, d *dentry) (*dentry, error) {
dir, ok := d.inode.impl.(*directory)
if !ok {
return nil, syserror.ENOTDIR
@@ -55,13 +55,13 @@ afterSymlink:
return d, nil
}
if name == ".." {
- if isRoot, err := rp.CheckRoot(&d.vfsd); err != nil {
+ if isRoot, err := rp.CheckRoot(ctx, &d.vfsd); err != nil {
return nil, err
} else if isRoot || d.parent == nil {
rp.Advance()
return d, nil
}
- if err := rp.CheckMount(&d.parent.vfsd); err != nil {
+ if err := rp.CheckMount(ctx, &d.parent.vfsd); err != nil {
return nil, err
}
rp.Advance()
@@ -74,7 +74,7 @@ afterSymlink:
if !ok {
return nil, syserror.ENOENT
}
- if err := rp.CheckMount(&child.vfsd); err != nil {
+ if err := rp.CheckMount(ctx, &child.vfsd); err != nil {
return nil, err
}
if symlink, ok := child.inode.impl.(*symlink); ok && rp.ShouldFollowSymlink() {
@@ -98,9 +98,9 @@ afterSymlink:
// fs/namei.c:path_parentat().
//
// Preconditions: filesystem.mu must be locked. !rp.Done().
-func walkParentDirLocked(rp *vfs.ResolvingPath, d *dentry) (*directory, error) {
+func walkParentDirLocked(ctx context.Context, rp *vfs.ResolvingPath, d *dentry) (*directory, error) {
for !rp.Final() {
- next, err := stepLocked(rp, d)
+ next, err := stepLocked(ctx, rp, d)
if err != nil {
return nil, err
}
@@ -118,10 +118,10 @@ func walkParentDirLocked(rp *vfs.ResolvingPath, d *dentry) (*directory, error) {
// resolveLocked is loosely analogous to Linux's fs/namei.c:path_lookupat().
//
// Preconditions: filesystem.mu must be locked.
-func resolveLocked(rp *vfs.ResolvingPath) (*dentry, error) {
+func resolveLocked(ctx context.Context, rp *vfs.ResolvingPath) (*dentry, error) {
d := rp.Start().Impl().(*dentry)
for !rp.Done() {
- next, err := stepLocked(rp, d)
+ next, err := stepLocked(ctx, rp, d)
if err != nil {
return nil, err
}
@@ -141,10 +141,10 @@ func resolveLocked(rp *vfs.ResolvingPath) (*dentry, error) {
//
// Preconditions: !rp.Done(). For the final path component in rp,
// !rp.ShouldFollowSymlink().
-func (fs *filesystem) doCreateAt(rp *vfs.ResolvingPath, dir bool, create func(parentDir *directory, name string) error) error {
+func (fs *filesystem) doCreateAt(ctx context.Context, rp *vfs.ResolvingPath, dir bool, create func(parentDir *directory, name string) error) error {
fs.mu.Lock()
defer fs.mu.Unlock()
- parentDir, err := walkParentDirLocked(rp, rp.Start().Impl().(*dentry))
+ parentDir, err := walkParentDirLocked(ctx, rp, rp.Start().Impl().(*dentry))
if err != nil {
return err
}
@@ -182,7 +182,7 @@ func (fs *filesystem) doCreateAt(rp *vfs.ResolvingPath, dir bool, create func(pa
if dir {
ev |= linux.IN_ISDIR
}
- parentDir.inode.watches.Notify(name, uint32(ev), 0, vfs.InodeEvent, false /* unlinked */)
+ parentDir.inode.watches.Notify(ctx, name, uint32(ev), 0, vfs.InodeEvent, false /* unlinked */)
parentDir.inode.touchCMtime()
return nil
}
@@ -191,7 +191,7 @@ func (fs *filesystem) doCreateAt(rp *vfs.ResolvingPath, dir bool, create func(pa
func (fs *filesystem) AccessAt(ctx context.Context, rp *vfs.ResolvingPath, creds *auth.Credentials, ats vfs.AccessTypes) error {
fs.mu.RLock()
defer fs.mu.RUnlock()
- d, err := resolveLocked(rp)
+ d, err := resolveLocked(ctx, rp)
if err != nil {
return err
}
@@ -202,7 +202,7 @@ func (fs *filesystem) AccessAt(ctx context.Context, rp *vfs.ResolvingPath, creds
func (fs *filesystem) GetDentryAt(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.GetDentryOptions) (*vfs.Dentry, error) {
fs.mu.RLock()
defer fs.mu.RUnlock()
- d, err := resolveLocked(rp)
+ d, err := resolveLocked(ctx, rp)
if err != nil {
return nil, err
}
@@ -222,7 +222,7 @@ func (fs *filesystem) GetDentryAt(ctx context.Context, rp *vfs.ResolvingPath, op
func (fs *filesystem) GetParentDentryAt(ctx context.Context, rp *vfs.ResolvingPath) (*vfs.Dentry, error) {
fs.mu.RLock()
defer fs.mu.RUnlock()
- dir, err := walkParentDirLocked(rp, rp.Start().Impl().(*dentry))
+ dir, err := walkParentDirLocked(ctx, rp, rp.Start().Impl().(*dentry))
if err != nil {
return nil, err
}
@@ -232,7 +232,7 @@ func (fs *filesystem) GetParentDentryAt(ctx context.Context, rp *vfs.ResolvingPa
// LinkAt implements vfs.FilesystemImpl.LinkAt.
func (fs *filesystem) LinkAt(ctx context.Context, rp *vfs.ResolvingPath, vd vfs.VirtualDentry) error {
- return fs.doCreateAt(rp, false /* dir */, func(parentDir *directory, name string) error {
+ return fs.doCreateAt(ctx, rp, false /* dir */, func(parentDir *directory, name string) error {
if rp.Mount() != vd.Mount() {
return syserror.EXDEV
}
@@ -251,7 +251,7 @@ func (fs *filesystem) LinkAt(ctx context.Context, rp *vfs.ResolvingPath, vd vfs.
return syserror.EMLINK
}
i.incLinksLocked()
- i.watches.Notify("", linux.IN_ATTRIB, 0, vfs.InodeEvent, false /* unlinked */)
+ i.watches.Notify(ctx, "", linux.IN_ATTRIB, 0, vfs.InodeEvent, false /* unlinked */)
parentDir.insertChildLocked(fs.newDentry(i), name)
return nil
})
@@ -259,7 +259,7 @@ func (fs *filesystem) LinkAt(ctx context.Context, rp *vfs.ResolvingPath, vd vfs.
// MkdirAt implements vfs.FilesystemImpl.MkdirAt.
func (fs *filesystem) MkdirAt(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.MkdirOptions) error {
- return fs.doCreateAt(rp, true /* dir */, func(parentDir *directory, name string) error {
+ return fs.doCreateAt(ctx, rp, true /* dir */, func(parentDir *directory, name string) error {
creds := rp.Credentials()
if parentDir.inode.nlink == maxLinks {
return syserror.EMLINK
@@ -273,7 +273,7 @@ func (fs *filesystem) MkdirAt(ctx context.Context, rp *vfs.ResolvingPath, opts v
// MknodAt implements vfs.FilesystemImpl.MknodAt.
func (fs *filesystem) MknodAt(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.MknodOptions) error {
- return fs.doCreateAt(rp, false /* dir */, func(parentDir *directory, name string) error {
+ return fs.doCreateAt(ctx, rp, false /* dir */, func(parentDir *directory, name string) error {
creds := rp.Credentials()
var childInode *inode
switch opts.Mode.FileType() {
@@ -308,7 +308,7 @@ func (fs *filesystem) OpenAt(ctx context.Context, rp *vfs.ResolvingPath, opts vf
if opts.Flags&linux.O_CREAT == 0 {
fs.mu.RLock()
defer fs.mu.RUnlock()
- d, err := resolveLocked(rp)
+ d, err := resolveLocked(ctx, rp)
if err != nil {
return nil, err
}
@@ -330,7 +330,7 @@ func (fs *filesystem) OpenAt(ctx context.Context, rp *vfs.ResolvingPath, opts vf
return start.open(ctx, rp, &opts, false /* afterCreate */)
}
afterTrailingSymlink:
- parentDir, err := walkParentDirLocked(rp, start)
+ parentDir, err := walkParentDirLocked(ctx, rp, start)
if err != nil {
return nil, err
}
@@ -368,7 +368,7 @@ afterTrailingSymlink:
if err != nil {
return nil, err
}
- parentDir.inode.watches.Notify(name, linux.IN_CREATE, 0, vfs.PathEvent, false /* unlinked */)
+ parentDir.inode.watches.Notify(ctx, name, linux.IN_CREATE, 0, vfs.PathEvent, false /* unlinked */)
parentDir.inode.touchCMtime()
return fd, nil
}
@@ -376,7 +376,7 @@ afterTrailingSymlink:
return nil, syserror.EEXIST
}
// Is the file mounted over?
- if err := rp.CheckMount(&child.vfsd); err != nil {
+ if err := rp.CheckMount(ctx, &child.vfsd); err != nil {
return nil, err
}
// Do we need to resolve a trailing symlink?
@@ -445,7 +445,7 @@ func (d *dentry) open(ctx context.Context, rp *vfs.ResolvingPath, opts *vfs.Open
func (fs *filesystem) ReadlinkAt(ctx context.Context, rp *vfs.ResolvingPath) (string, error) {
fs.mu.RLock()
defer fs.mu.RUnlock()
- d, err := resolveLocked(rp)
+ d, err := resolveLocked(ctx, rp)
if err != nil {
return "", err
}
@@ -467,7 +467,7 @@ func (fs *filesystem) RenameAt(ctx context.Context, rp *vfs.ResolvingPath, oldPa
// Resolve newParent first to verify that it's on this Mount.
fs.mu.Lock()
defer fs.mu.Unlock()
- newParentDir, err := walkParentDirLocked(rp, rp.Start().Impl().(*dentry))
+ newParentDir, err := walkParentDirLocked(ctx, rp, rp.Start().Impl().(*dentry))
if err != nil {
return err
}
@@ -555,7 +555,7 @@ func (fs *filesystem) RenameAt(ctx context.Context, rp *vfs.ResolvingPath, oldPa
}
vfsObj := rp.VirtualFilesystem()
mntns := vfs.MountNamespaceFromContext(ctx)
- defer mntns.DecRef()
+ defer mntns.DecRef(ctx)
var replacedVFSD *vfs.Dentry
if replaced != nil {
replacedVFSD = &replaced.vfsd
@@ -566,17 +566,17 @@ func (fs *filesystem) RenameAt(ctx context.Context, rp *vfs.ResolvingPath, oldPa
if replaced != nil {
newParentDir.removeChildLocked(replaced)
if replaced.inode.isDir() {
- newParentDir.inode.decLinksLocked() // from replaced's ".."
+ newParentDir.inode.decLinksLocked(ctx) // from replaced's ".."
}
- replaced.inode.decLinksLocked()
+ replaced.inode.decLinksLocked(ctx)
}
oldParentDir.removeChildLocked(renamed)
newParentDir.insertChildLocked(renamed, newName)
- vfsObj.CommitRenameReplaceDentry(&renamed.vfsd, replacedVFSD)
+ vfsObj.CommitRenameReplaceDentry(ctx, &renamed.vfsd, replacedVFSD)
oldParentDir.inode.touchCMtime()
if oldParentDir != newParentDir {
if renamed.inode.isDir() {
- oldParentDir.inode.decLinksLocked()
+ oldParentDir.inode.decLinksLocked(ctx)
newParentDir.inode.incLinksLocked()
}
newParentDir.inode.touchCMtime()
@@ -591,7 +591,7 @@ func (fs *filesystem) RenameAt(ctx context.Context, rp *vfs.ResolvingPath, oldPa
func (fs *filesystem) RmdirAt(ctx context.Context, rp *vfs.ResolvingPath) error {
fs.mu.Lock()
defer fs.mu.Unlock()
- parentDir, err := walkParentDirLocked(rp, rp.Start().Impl().(*dentry))
+ parentDir, err := walkParentDirLocked(ctx, rp, rp.Start().Impl().(*dentry))
if err != nil {
return err
}
@@ -626,17 +626,17 @@ func (fs *filesystem) RmdirAt(ctx context.Context, rp *vfs.ResolvingPath) error
defer mnt.EndWrite()
vfsObj := rp.VirtualFilesystem()
mntns := vfs.MountNamespaceFromContext(ctx)
- defer mntns.DecRef()
+ defer mntns.DecRef(ctx)
if err := vfsObj.PrepareDeleteDentry(mntns, &child.vfsd); err != nil {
return err
}
parentDir.removeChildLocked(child)
- parentDir.inode.watches.Notify(name, linux.IN_DELETE|linux.IN_ISDIR, 0, vfs.InodeEvent, true /* unlinked */)
+ parentDir.inode.watches.Notify(ctx, name, linux.IN_DELETE|linux.IN_ISDIR, 0, vfs.InodeEvent, true /* unlinked */)
// Remove links for child, child/., and child/..
- child.inode.decLinksLocked()
- child.inode.decLinksLocked()
- parentDir.inode.decLinksLocked()
- vfsObj.CommitDeleteDentry(&child.vfsd)
+ child.inode.decLinksLocked(ctx)
+ child.inode.decLinksLocked(ctx)
+ parentDir.inode.decLinksLocked(ctx)
+ vfsObj.CommitDeleteDentry(ctx, &child.vfsd)
parentDir.inode.touchCMtime()
return nil
}
@@ -644,7 +644,7 @@ func (fs *filesystem) RmdirAt(ctx context.Context, rp *vfs.ResolvingPath) error
// SetStatAt implements vfs.FilesystemImpl.SetStatAt.
func (fs *filesystem) SetStatAt(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.SetStatOptions) error {
fs.mu.RLock()
- d, err := resolveLocked(rp)
+ d, err := resolveLocked(ctx, rp)
if err != nil {
fs.mu.RUnlock()
return err
@@ -656,7 +656,7 @@ func (fs *filesystem) SetStatAt(ctx context.Context, rp *vfs.ResolvingPath, opts
fs.mu.RUnlock()
if ev := vfs.InotifyEventFromStatMask(opts.Stat.Mask); ev != 0 {
- d.InotifyWithParent(ev, 0, vfs.InodeEvent)
+ d.InotifyWithParent(ctx, ev, 0, vfs.InodeEvent)
}
return nil
}
@@ -665,7 +665,7 @@ func (fs *filesystem) SetStatAt(ctx context.Context, rp *vfs.ResolvingPath, opts
func (fs *filesystem) StatAt(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.StatOptions) (linux.Statx, error) {
fs.mu.RLock()
defer fs.mu.RUnlock()
- d, err := resolveLocked(rp)
+ d, err := resolveLocked(ctx, rp)
if err != nil {
return linux.Statx{}, err
}
@@ -678,7 +678,7 @@ func (fs *filesystem) StatAt(ctx context.Context, rp *vfs.ResolvingPath, opts vf
func (fs *filesystem) StatFSAt(ctx context.Context, rp *vfs.ResolvingPath) (linux.Statfs, error) {
fs.mu.RLock()
defer fs.mu.RUnlock()
- if _, err := resolveLocked(rp); err != nil {
+ if _, err := resolveLocked(ctx, rp); err != nil {
return linux.Statfs{}, err
}
statfs := linux.Statfs{
@@ -695,7 +695,7 @@ func (fs *filesystem) StatFSAt(ctx context.Context, rp *vfs.ResolvingPath) (linu
// SymlinkAt implements vfs.FilesystemImpl.SymlinkAt.
func (fs *filesystem) SymlinkAt(ctx context.Context, rp *vfs.ResolvingPath, target string) error {
- return fs.doCreateAt(rp, false /* dir */, func(parentDir *directory, name string) error {
+ return fs.doCreateAt(ctx, rp, false /* dir */, func(parentDir *directory, name string) error {
creds := rp.Credentials()
child := fs.newDentry(fs.newSymlink(creds.EffectiveKUID, creds.EffectiveKGID, 0777, target))
parentDir.insertChildLocked(child, name)
@@ -707,7 +707,7 @@ func (fs *filesystem) SymlinkAt(ctx context.Context, rp *vfs.ResolvingPath, targ
func (fs *filesystem) UnlinkAt(ctx context.Context, rp *vfs.ResolvingPath) error {
fs.mu.Lock()
defer fs.mu.Unlock()
- parentDir, err := walkParentDirLocked(rp, rp.Start().Impl().(*dentry))
+ parentDir, err := walkParentDirLocked(ctx, rp, rp.Start().Impl().(*dentry))
if err != nil {
return err
}
@@ -738,7 +738,7 @@ func (fs *filesystem) UnlinkAt(ctx context.Context, rp *vfs.ResolvingPath) error
defer mnt.EndWrite()
vfsObj := rp.VirtualFilesystem()
mntns := vfs.MountNamespaceFromContext(ctx)
- defer mntns.DecRef()
+ defer mntns.DecRef(ctx)
if err := vfsObj.PrepareDeleteDentry(mntns, &child.vfsd); err != nil {
return err
}
@@ -746,11 +746,11 @@ func (fs *filesystem) UnlinkAt(ctx context.Context, rp *vfs.ResolvingPath) error
// Generate inotify events. Note that this must take place before the link
// count of the child is decremented, or else the watches may be dropped
// before these events are added.
- vfs.InotifyRemoveChild(&child.inode.watches, &parentDir.inode.watches, name)
+ vfs.InotifyRemoveChild(ctx, &child.inode.watches, &parentDir.inode.watches, name)
parentDir.removeChildLocked(child)
- child.inode.decLinksLocked()
- vfsObj.CommitDeleteDentry(&child.vfsd)
+ child.inode.decLinksLocked(ctx)
+ vfsObj.CommitDeleteDentry(ctx, &child.vfsd)
parentDir.inode.touchCMtime()
return nil
}
@@ -759,7 +759,7 @@ func (fs *filesystem) UnlinkAt(ctx context.Context, rp *vfs.ResolvingPath) error
func (fs *filesystem) BoundEndpointAt(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.BoundEndpointOptions) (transport.BoundEndpoint, error) {
fs.mu.RLock()
defer fs.mu.RUnlock()
- d, err := resolveLocked(rp)
+ d, err := resolveLocked(ctx, rp)
if err != nil {
return nil, err
}
@@ -778,7 +778,7 @@ func (fs *filesystem) BoundEndpointAt(ctx context.Context, rp *vfs.ResolvingPath
func (fs *filesystem) ListxattrAt(ctx context.Context, rp *vfs.ResolvingPath, size uint64) ([]string, error) {
fs.mu.RLock()
defer fs.mu.RUnlock()
- d, err := resolveLocked(rp)
+ d, err := resolveLocked(ctx, rp)
if err != nil {
return nil, err
}
@@ -789,7 +789,7 @@ func (fs *filesystem) ListxattrAt(ctx context.Context, rp *vfs.ResolvingPath, si
func (fs *filesystem) GetxattrAt(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.GetxattrOptions) (string, error) {
fs.mu.RLock()
defer fs.mu.RUnlock()
- d, err := resolveLocked(rp)
+ d, err := resolveLocked(ctx, rp)
if err != nil {
return "", err
}
@@ -799,7 +799,7 @@ func (fs *filesystem) GetxattrAt(ctx context.Context, rp *vfs.ResolvingPath, opt
// SetxattrAt implements vfs.FilesystemImpl.SetxattrAt.
func (fs *filesystem) SetxattrAt(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.SetxattrOptions) error {
fs.mu.RLock()
- d, err := resolveLocked(rp)
+ d, err := resolveLocked(ctx, rp)
if err != nil {
fs.mu.RUnlock()
return err
@@ -810,14 +810,14 @@ func (fs *filesystem) SetxattrAt(ctx context.Context, rp *vfs.ResolvingPath, opt
}
fs.mu.RUnlock()
- d.InotifyWithParent(linux.IN_ATTRIB, 0, vfs.InodeEvent)
+ d.InotifyWithParent(ctx, linux.IN_ATTRIB, 0, vfs.InodeEvent)
return nil
}
// RemovexattrAt implements vfs.FilesystemImpl.RemovexattrAt.
func (fs *filesystem) RemovexattrAt(ctx context.Context, rp *vfs.ResolvingPath, name string) error {
fs.mu.RLock()
- d, err := resolveLocked(rp)
+ d, err := resolveLocked(ctx, rp)
if err != nil {
fs.mu.RUnlock()
return err
@@ -828,7 +828,7 @@ func (fs *filesystem) RemovexattrAt(ctx context.Context, rp *vfs.ResolvingPath,
}
fs.mu.RUnlock()
- d.InotifyWithParent(linux.IN_ATTRIB, 0, vfs.InodeEvent)
+ d.InotifyWithParent(ctx, linux.IN_ATTRIB, 0, vfs.InodeEvent)
return nil
}
diff --git a/pkg/sentry/fsimpl/tmpfs/regular_file.go b/pkg/sentry/fsimpl/tmpfs/regular_file.go
index abbaa5d60..0710b65db 100644
--- a/pkg/sentry/fsimpl/tmpfs/regular_file.go
+++ b/pkg/sentry/fsimpl/tmpfs/regular_file.go
@@ -270,7 +270,7 @@ type regularFileFD struct {
}
// Release implements vfs.FileDescriptionImpl.Release.
-func (fd *regularFileFD) Release() {
+func (fd *regularFileFD) Release(context.Context) {
// noop
}
diff --git a/pkg/sentry/fsimpl/tmpfs/tmpfs.go b/pkg/sentry/fsimpl/tmpfs/tmpfs.go
index 2545d88e9..68e615e8b 100644
--- a/pkg/sentry/fsimpl/tmpfs/tmpfs.go
+++ b/pkg/sentry/fsimpl/tmpfs/tmpfs.go
@@ -185,7 +185,7 @@ func (fstype FilesystemType) GetFilesystem(ctx context.Context, vfsObj *vfs.Virt
case linux.S_IFDIR:
root = &fs.newDirectory(rootKUID, rootKGID, rootMode).dentry
default:
- fs.vfsfs.DecRef()
+ fs.vfsfs.DecRef(ctx)
return nil, nil, fmt.Errorf("invalid tmpfs root file type: %#o", rootFileType)
}
return &fs.vfsfs, &root.vfsd, nil
@@ -197,7 +197,7 @@ func NewFilesystem(ctx context.Context, vfsObj *vfs.VirtualFilesystem, creds *au
}
// Release implements vfs.FilesystemImpl.Release.
-func (fs *filesystem) Release() {
+func (fs *filesystem) Release(ctx context.Context) {
fs.vfsfs.VirtualFilesystem().PutAnonBlockDevMinor(fs.devMinor)
}
@@ -249,12 +249,12 @@ func (d *dentry) TryIncRef() bool {
}
// DecRef implements vfs.DentryImpl.DecRef.
-func (d *dentry) DecRef() {
- d.inode.decRef()
+func (d *dentry) DecRef(ctx context.Context) {
+ d.inode.decRef(ctx)
}
// InotifyWithParent implements vfs.DentryImpl.InotifyWithParent.
-func (d *dentry) InotifyWithParent(events, cookie uint32, et vfs.EventType) {
+func (d *dentry) InotifyWithParent(ctx context.Context, events, cookie uint32, et vfs.EventType) {
if d.inode.isDir() {
events |= linux.IN_ISDIR
}
@@ -266,9 +266,9 @@ func (d *dentry) InotifyWithParent(events, cookie uint32, et vfs.EventType) {
d.inode.fs.mu.RLock()
// The ordering below is important, Linux always notifies the parent first.
if d.parent != nil {
- d.parent.inode.watches.Notify(d.name, events, cookie, et, deleted)
+ d.parent.inode.watches.Notify(ctx, d.name, events, cookie, et, deleted)
}
- d.inode.watches.Notify("", events, cookie, et, deleted)
+ d.inode.watches.Notify(ctx, "", events, cookie, et, deleted)
d.inode.fs.mu.RUnlock()
}
@@ -278,7 +278,7 @@ func (d *dentry) Watches() *vfs.Watches {
}
// OnZeroWatches implements vfs.Dentry.OnZeroWatches.
-func (d *dentry) OnZeroWatches() {}
+func (d *dentry) OnZeroWatches(context.Context) {}
// inode represents a filesystem object.
type inode struct {
@@ -359,12 +359,12 @@ func (i *inode) incLinksLocked() {
// remove a reference on i as well.
//
// Preconditions: filesystem.mu must be locked for writing. i.nlink != 0.
-func (i *inode) decLinksLocked() {
+func (i *inode) decLinksLocked(ctx context.Context) {
if i.nlink == 0 {
panic("tmpfs.inode.decLinksLocked() called with no existing links")
}
if atomic.AddUint32(&i.nlink, ^uint32(0)) == 0 {
- i.decRef()
+ i.decRef(ctx)
}
}
@@ -386,9 +386,9 @@ func (i *inode) tryIncRef() bool {
}
}
-func (i *inode) decRef() {
+func (i *inode) decRef(ctx context.Context) {
if refs := atomic.AddInt64(&i.refs, -1); refs == 0 {
- i.watches.HandleDeletion()
+ i.watches.HandleDeletion(ctx)
if regFile, ok := i.impl.(*regularFile); ok {
// Release memory used by regFile to store data. Since regFile is
// no longer usable, we don't need to grab any locks or update any
@@ -701,7 +701,7 @@ func (fd *fileDescription) SetStat(ctx context.Context, opts vfs.SetStatOptions)
}
if ev := vfs.InotifyEventFromStatMask(opts.Stat.Mask); ev != 0 {
- d.InotifyWithParent(ev, 0, vfs.InodeEvent)
+ d.InotifyWithParent(ctx, ev, 0, vfs.InodeEvent)
}
return nil
}
@@ -724,7 +724,7 @@ func (fd *fileDescription) Setxattr(ctx context.Context, opts vfs.SetxattrOption
}
// Generate inotify events.
- d.InotifyWithParent(linux.IN_ATTRIB, 0, vfs.InodeEvent)
+ d.InotifyWithParent(ctx, linux.IN_ATTRIB, 0, vfs.InodeEvent)
return nil
}
@@ -736,13 +736,13 @@ func (fd *fileDescription) Removexattr(ctx context.Context, name string) error {
}
// Generate inotify events.
- d.InotifyWithParent(linux.IN_ATTRIB, 0, vfs.InodeEvent)
+ d.InotifyWithParent(ctx, linux.IN_ATTRIB, 0, vfs.InodeEvent)
return nil
}
// NewMemfd creates a new tmpfs regular file and file description that can back
// an anonymous fd created by memfd_create.
-func NewMemfd(mount *vfs.Mount, creds *auth.Credentials, allowSeals bool, name string) (*vfs.FileDescription, error) {
+func NewMemfd(ctx context.Context, creds *auth.Credentials, mount *vfs.Mount, allowSeals bool, name string) (*vfs.FileDescription, error) {
fs, ok := mount.Filesystem().Impl().(*filesystem)
if !ok {
panic("NewMemfd() called with non-tmpfs mount")
@@ -757,7 +757,7 @@ func NewMemfd(mount *vfs.Mount, creds *auth.Credentials, allowSeals bool, name s
}
d := fs.newDentry(inode)
- defer d.DecRef()
+ defer d.DecRef(ctx)
d.name = name
// Per Linux, mm/shmem.c:__shmem_file_setup(), memfd files are set up with
diff --git a/pkg/sentry/kernel/abstract_socket_namespace.go b/pkg/sentry/kernel/abstract_socket_namespace.go
index 920fe4329..52ed5cea2 100644
--- a/pkg/sentry/kernel/abstract_socket_namespace.go
+++ b/pkg/sentry/kernel/abstract_socket_namespace.go
@@ -17,6 +17,7 @@ package kernel
import (
"syscall"
+ "gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/refs"
"gvisor.dev/gvisor/pkg/sentry/socket/unix/transport"
"gvisor.dev/gvisor/pkg/sync"
@@ -31,7 +32,7 @@ type abstractEndpoint struct {
}
// WeakRefGone implements refs.WeakRefUser.WeakRefGone.
-func (e *abstractEndpoint) WeakRefGone() {
+func (e *abstractEndpoint) WeakRefGone(context.Context) {
e.ns.mu.Lock()
if e.ns.endpoints[e.name].ep == e.ep {
delete(e.ns.endpoints, e.name)
@@ -64,9 +65,9 @@ type boundEndpoint struct {
}
// Release implements transport.BoundEndpoint.Release.
-func (e *boundEndpoint) Release() {
- e.rc.DecRef()
- e.BoundEndpoint.Release()
+func (e *boundEndpoint) Release(ctx context.Context) {
+ e.rc.DecRef(ctx)
+ e.BoundEndpoint.Release(ctx)
}
// BoundEndpoint retrieves the endpoint bound to the given name. The return
@@ -93,13 +94,13 @@ func (a *AbstractSocketNamespace) BoundEndpoint(name string) transport.BoundEndp
//
// When the last reference managed by rc is dropped, ep may be removed from the
// namespace.
-func (a *AbstractSocketNamespace) Bind(name string, ep transport.BoundEndpoint, rc refs.RefCounter) error {
+func (a *AbstractSocketNamespace) Bind(ctx context.Context, name string, ep transport.BoundEndpoint, rc refs.RefCounter) error {
a.mu.Lock()
defer a.mu.Unlock()
if ep, ok := a.endpoints[name]; ok {
if rc := ep.wr.Get(); rc != nil {
- rc.DecRef()
+ rc.DecRef(ctx)
return syscall.EADDRINUSE
}
}
diff --git a/pkg/sentry/kernel/epoll/epoll.go b/pkg/sentry/kernel/epoll/epoll.go
index 4c0f1e41f..15519f0df 100644
--- a/pkg/sentry/kernel/epoll/epoll.go
+++ b/pkg/sentry/kernel/epoll/epoll.go
@@ -76,8 +76,8 @@ type pollEntry struct {
// WeakRefGone implements refs.WeakRefUser.WeakRefGone.
// weakReferenceGone is called when the file in the weak reference is destroyed.
// The poll entry is removed in response to this.
-func (p *pollEntry) WeakRefGone() {
- p.epoll.RemoveEntry(p.id)
+func (p *pollEntry) WeakRefGone(ctx context.Context) {
+ p.epoll.RemoveEntry(ctx, p.id)
}
// EventPoll holds all the state associated with an event poll object, that is,
@@ -144,14 +144,14 @@ func NewEventPoll(ctx context.Context) *fs.File {
// name matches fs/eventpoll.c:epoll_create1.
dirent := fs.NewDirent(ctx, anon.NewInode(ctx), fmt.Sprintf("anon_inode:[eventpoll]"))
// Release the initial dirent reference after NewFile takes a reference.
- defer dirent.DecRef()
+ defer dirent.DecRef(ctx)
return fs.NewFile(ctx, dirent, fs.FileFlags{}, &EventPoll{
files: make(map[FileIdentifier]*pollEntry),
})
}
// Release implements fs.FileOperations.Release.
-func (e *EventPoll) Release() {
+func (e *EventPoll) Release(ctx context.Context) {
// We need to take the lock now because files may be attempting to
// remove entries in parallel if they get destroyed.
e.mu.Lock()
@@ -160,7 +160,7 @@ func (e *EventPoll) Release() {
// Go through all entries and clean up.
for _, entry := range e.files {
entry.id.File.EventUnregister(&entry.waiter)
- entry.file.Drop()
+ entry.file.Drop(ctx)
}
e.files = nil
}
@@ -423,7 +423,7 @@ func (e *EventPoll) UpdateEntry(id FileIdentifier, flags EntryFlags, mask waiter
}
// RemoveEntry a files from the collection of observed files.
-func (e *EventPoll) RemoveEntry(id FileIdentifier) error {
+func (e *EventPoll) RemoveEntry(ctx context.Context, id FileIdentifier) error {
e.mu.Lock()
defer e.mu.Unlock()
@@ -445,7 +445,7 @@ func (e *EventPoll) RemoveEntry(id FileIdentifier) error {
// Remove file from map, and drop weak reference.
delete(e.files, id)
- entry.file.Drop()
+ entry.file.Drop(ctx)
return nil
}
diff --git a/pkg/sentry/kernel/eventfd/eventfd.go b/pkg/sentry/kernel/eventfd/eventfd.go
index 87951adeb..bbf568dfc 100644
--- a/pkg/sentry/kernel/eventfd/eventfd.go
+++ b/pkg/sentry/kernel/eventfd/eventfd.go
@@ -70,7 +70,7 @@ func New(ctx context.Context, initVal uint64, semMode bool) *fs.File {
// name matches fs/eventfd.c:eventfd_file_create.
dirent := fs.NewDirent(ctx, anon.NewInode(ctx), "anon_inode:[eventfd]")
// Release the initial dirent reference after NewFile takes a reference.
- defer dirent.DecRef()
+ defer dirent.DecRef(ctx)
return fs.NewFile(ctx, dirent, fs.FileFlags{Read: true, Write: true}, &EventOperations{
val: initVal,
semMode: semMode,
@@ -106,7 +106,7 @@ func (e *EventOperations) HostFD() (int, error) {
}
// Release implements fs.FileOperations.Release.
-func (e *EventOperations) Release() {
+func (e *EventOperations) Release(context.Context) {
e.mu.Lock()
defer e.mu.Unlock()
if e.hostfd >= 0 {
diff --git a/pkg/sentry/kernel/fd_table.go b/pkg/sentry/kernel/fd_table.go
index 4b7d234a4..ce53af69b 100644
--- a/pkg/sentry/kernel/fd_table.go
+++ b/pkg/sentry/kernel/fd_table.go
@@ -98,7 +98,7 @@ type FDTable struct {
func (f *FDTable) saveDescriptorTable() map[int32]descriptor {
m := make(map[int32]descriptor)
- f.forEach(func(fd int32, file *fs.File, fileVFS2 *vfs.FileDescription, flags FDFlags) {
+ f.forEach(context.Background(), func(fd int32, file *fs.File, fileVFS2 *vfs.FileDescription, flags FDFlags) {
m[fd] = descriptor{
file: file,
fileVFS2: fileVFS2,
@@ -109,6 +109,7 @@ func (f *FDTable) saveDescriptorTable() map[int32]descriptor {
}
func (f *FDTable) loadDescriptorTable(m map[int32]descriptor) {
+ ctx := context.Background()
f.init() // Initialize table.
for fd, d := range m {
f.setAll(fd, d.file, d.fileVFS2, d.flags)
@@ -118,9 +119,9 @@ func (f *FDTable) loadDescriptorTable(m map[int32]descriptor) {
// reference taken by set above.
switch {
case d.file != nil:
- d.file.DecRef()
+ d.file.DecRef(ctx)
case d.fileVFS2 != nil:
- d.fileVFS2.DecRef()
+ d.fileVFS2.DecRef(ctx)
}
}
}
@@ -144,14 +145,15 @@ func (f *FDTable) drop(file *fs.File) {
d.InotifyEvent(ev, 0)
// Drop the table reference.
- file.DecRef()
+ file.DecRef(context.Background())
}
// dropVFS2 drops the table reference.
func (f *FDTable) dropVFS2(file *vfs.FileDescription) {
// Release any POSIX lock possibly held by the FDTable. Range {0, 0} means the
// entire file.
- err := file.UnlockPOSIX(context.Background(), f, 0, 0, linux.SEEK_SET)
+ ctx := context.Background()
+ err := file.UnlockPOSIX(ctx, f, 0, 0, linux.SEEK_SET)
if err != nil && err != syserror.ENOLCK {
panic(fmt.Sprintf("UnlockPOSIX failed: %v", err))
}
@@ -161,10 +163,10 @@ func (f *FDTable) dropVFS2(file *vfs.FileDescription) {
if file.IsWritable() {
ev = linux.IN_CLOSE_WRITE
}
- file.Dentry().InotifyWithParent(ev, 0, vfs.PathEvent)
+ file.Dentry().InotifyWithParent(ctx, ev, 0, vfs.PathEvent)
// Drop the table's reference.
- file.DecRef()
+ file.DecRef(ctx)
}
// NewFDTable allocates a new FDTable that may be used by tasks in k.
@@ -175,15 +177,15 @@ func (k *Kernel) NewFDTable() *FDTable {
}
// destroy removes all of the file descriptors from the map.
-func (f *FDTable) destroy() {
- f.RemoveIf(func(*fs.File, *vfs.FileDescription, FDFlags) bool {
+func (f *FDTable) destroy(ctx context.Context) {
+ f.RemoveIf(ctx, func(*fs.File, *vfs.FileDescription, FDFlags) bool {
return true
})
}
// DecRef implements RefCounter.DecRef with destructor f.destroy.
-func (f *FDTable) DecRef() {
- f.DecRefWithDestructor(f.destroy)
+func (f *FDTable) DecRef(ctx context.Context) {
+ f.DecRefWithDestructor(ctx, f.destroy)
}
// Size returns the number of file descriptor slots currently allocated.
@@ -195,7 +197,7 @@ func (f *FDTable) Size() int {
// forEach iterates over all non-nil files in sorted order.
//
// It is the caller's responsibility to acquire an appropriate lock.
-func (f *FDTable) forEach(fn func(fd int32, file *fs.File, fileVFS2 *vfs.FileDescription, flags FDFlags)) {
+func (f *FDTable) forEach(ctx context.Context, fn func(fd int32, file *fs.File, fileVFS2 *vfs.FileDescription, flags FDFlags)) {
// retries tracks the number of failed TryIncRef attempts for the same FD.
retries := 0
fd := int32(0)
@@ -214,7 +216,7 @@ func (f *FDTable) forEach(fn func(fd int32, file *fs.File, fileVFS2 *vfs.FileDes
continue // Race caught.
}
fn(fd, file, nil, flags)
- file.DecRef()
+ file.DecRef(ctx)
case fileVFS2 != nil:
if !fileVFS2.TryIncRef() {
retries++
@@ -224,7 +226,7 @@ func (f *FDTable) forEach(fn func(fd int32, file *fs.File, fileVFS2 *vfs.FileDes
continue // Race caught.
}
fn(fd, nil, fileVFS2, flags)
- fileVFS2.DecRef()
+ fileVFS2.DecRef(ctx)
}
retries = 0
fd++
@@ -234,7 +236,8 @@ func (f *FDTable) forEach(fn func(fd int32, file *fs.File, fileVFS2 *vfs.FileDes
// String is a stringer for FDTable.
func (f *FDTable) String() string {
var buf strings.Builder
- f.forEach(func(fd int32, file *fs.File, fileVFS2 *vfs.FileDescription, flags FDFlags) {
+ ctx := context.Background()
+ f.forEach(ctx, func(fd int32, file *fs.File, fileVFS2 *vfs.FileDescription, flags FDFlags) {
switch {
case file != nil:
n, _ := file.Dirent.FullName(nil /* root */)
@@ -242,7 +245,7 @@ func (f *FDTable) String() string {
case fileVFS2 != nil:
vfsObj := fileVFS2.Mount().Filesystem().VirtualFilesystem()
- name, err := vfsObj.PathnameWithDeleted(context.Background(), vfs.VirtualDentry{}, fileVFS2.VirtualDentry())
+ name, err := vfsObj.PathnameWithDeleted(ctx, vfs.VirtualDentry{}, fileVFS2.VirtualDentry())
if err != nil {
fmt.Fprintf(&buf, "<err: %v>\n", err)
return
@@ -541,9 +544,9 @@ func (f *FDTable) GetVFS2(fd int32) (*vfs.FileDescription, FDFlags) {
//
// Precondition: The caller must be running on the task goroutine, or Task.mu
// must be locked.
-func (f *FDTable) GetFDs() []int32 {
+func (f *FDTable) GetFDs(ctx context.Context) []int32 {
fds := make([]int32, 0, int(atomic.LoadInt32(&f.used)))
- f.forEach(func(fd int32, _ *fs.File, _ *vfs.FileDescription, _ FDFlags) {
+ f.forEach(ctx, func(fd int32, _ *fs.File, _ *vfs.FileDescription, _ FDFlags) {
fds = append(fds, fd)
})
return fds
@@ -552,9 +555,9 @@ func (f *FDTable) GetFDs() []int32 {
// GetRefs returns a stable slice of references to all files and bumps the
// reference count on each. The caller must use DecRef on each reference when
// they're done using the slice.
-func (f *FDTable) GetRefs() []*fs.File {
+func (f *FDTable) GetRefs(ctx context.Context) []*fs.File {
files := make([]*fs.File, 0, f.Size())
- f.forEach(func(_ int32, file *fs.File, _ *vfs.FileDescription, _ FDFlags) {
+ f.forEach(ctx, func(_ int32, file *fs.File, _ *vfs.FileDescription, _ FDFlags) {
file.IncRef() // Acquire a reference for caller.
files = append(files, file)
})
@@ -564,9 +567,9 @@ func (f *FDTable) GetRefs() []*fs.File {
// GetRefsVFS2 returns a stable slice of references to all files and bumps the
// reference count on each. The caller must use DecRef on each reference when
// they're done using the slice.
-func (f *FDTable) GetRefsVFS2() []*vfs.FileDescription {
+func (f *FDTable) GetRefsVFS2(ctx context.Context) []*vfs.FileDescription {
files := make([]*vfs.FileDescription, 0, f.Size())
- f.forEach(func(_ int32, _ *fs.File, file *vfs.FileDescription, _ FDFlags) {
+ f.forEach(ctx, func(_ int32, _ *fs.File, file *vfs.FileDescription, _ FDFlags) {
file.IncRef() // Acquire a reference for caller.
files = append(files, file)
})
@@ -574,10 +577,10 @@ func (f *FDTable) GetRefsVFS2() []*vfs.FileDescription {
}
// Fork returns an independent FDTable.
-func (f *FDTable) Fork() *FDTable {
+func (f *FDTable) Fork(ctx context.Context) *FDTable {
clone := f.k.NewFDTable()
- f.forEach(func(fd int32, file *fs.File, fileVFS2 *vfs.FileDescription, flags FDFlags) {
+ f.forEach(ctx, func(fd int32, file *fs.File, fileVFS2 *vfs.FileDescription, flags FDFlags) {
// The set function here will acquire an appropriate table
// reference for the clone. We don't need anything else.
switch {
@@ -622,11 +625,11 @@ func (f *FDTable) Remove(fd int32) (*fs.File, *vfs.FileDescription) {
}
// RemoveIf removes all FDs where cond is true.
-func (f *FDTable) RemoveIf(cond func(*fs.File, *vfs.FileDescription, FDFlags) bool) {
+func (f *FDTable) RemoveIf(ctx context.Context, cond func(*fs.File, *vfs.FileDescription, FDFlags) bool) {
f.mu.Lock()
defer f.mu.Unlock()
- f.forEach(func(fd int32, file *fs.File, fileVFS2 *vfs.FileDescription, flags FDFlags) {
+ f.forEach(ctx, func(fd int32, file *fs.File, fileVFS2 *vfs.FileDescription, flags FDFlags) {
if cond(file, fileVFS2, flags) {
f.set(fd, nil, FDFlags{}) // Clear from table.
// Update current available position.
diff --git a/pkg/sentry/kernel/fs_context.go b/pkg/sentry/kernel/fs_context.go
index 47f78df9a..8f2d36d5a 100644
--- a/pkg/sentry/kernel/fs_context.go
+++ b/pkg/sentry/kernel/fs_context.go
@@ -17,6 +17,7 @@ package kernel
import (
"fmt"
+ "gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/refs"
"gvisor.dev/gvisor/pkg/sentry/fs"
"gvisor.dev/gvisor/pkg/sentry/vfs"
@@ -89,28 +90,28 @@ func NewFSContextVFS2(root, cwd vfs.VirtualDentry, umask uint) *FSContext {
// Note that there may still be calls to WorkingDirectory() or RootDirectory()
// (that return nil). This is because valid references may still be held via
// proc files or other mechanisms.
-func (f *FSContext) destroy() {
+func (f *FSContext) destroy(ctx context.Context) {
// Hold f.mu so that we don't race with RootDirectory() and
// WorkingDirectory().
f.mu.Lock()
defer f.mu.Unlock()
if VFS2Enabled {
- f.rootVFS2.DecRef()
+ f.rootVFS2.DecRef(ctx)
f.rootVFS2 = vfs.VirtualDentry{}
- f.cwdVFS2.DecRef()
+ f.cwdVFS2.DecRef(ctx)
f.cwdVFS2 = vfs.VirtualDentry{}
} else {
- f.root.DecRef()
+ f.root.DecRef(ctx)
f.root = nil
- f.cwd.DecRef()
+ f.cwd.DecRef(ctx)
f.cwd = nil
}
}
// DecRef implements RefCounter.DecRef with destructor f.destroy.
-func (f *FSContext) DecRef() {
- f.DecRefWithDestructor(f.destroy)
+func (f *FSContext) DecRef(ctx context.Context) {
+ f.DecRefWithDestructor(ctx, f.destroy)
}
// Fork forks this FSContext.
@@ -165,7 +166,7 @@ func (f *FSContext) WorkingDirectoryVFS2() vfs.VirtualDentry {
// This will take an extra reference on the Dirent.
//
// This is not a valid call after destroy.
-func (f *FSContext) SetWorkingDirectory(d *fs.Dirent) {
+func (f *FSContext) SetWorkingDirectory(ctx context.Context, d *fs.Dirent) {
if d == nil {
panic("FSContext.SetWorkingDirectory called with nil dirent")
}
@@ -180,21 +181,21 @@ func (f *FSContext) SetWorkingDirectory(d *fs.Dirent) {
old := f.cwd
f.cwd = d
d.IncRef()
- old.DecRef()
+ old.DecRef(ctx)
}
// SetWorkingDirectoryVFS2 sets the current working directory.
// This will take an extra reference on the VirtualDentry.
//
// This is not a valid call after destroy.
-func (f *FSContext) SetWorkingDirectoryVFS2(d vfs.VirtualDentry) {
+func (f *FSContext) SetWorkingDirectoryVFS2(ctx context.Context, d vfs.VirtualDentry) {
f.mu.Lock()
defer f.mu.Unlock()
old := f.cwdVFS2
f.cwdVFS2 = d
d.IncRef()
- old.DecRef()
+ old.DecRef(ctx)
}
// RootDirectory returns the current filesystem root.
@@ -226,7 +227,7 @@ func (f *FSContext) RootDirectoryVFS2() vfs.VirtualDentry {
// This will take an extra reference on the Dirent.
//
// This is not a valid call after free.
-func (f *FSContext) SetRootDirectory(d *fs.Dirent) {
+func (f *FSContext) SetRootDirectory(ctx context.Context, d *fs.Dirent) {
if d == nil {
panic("FSContext.SetRootDirectory called with nil dirent")
}
@@ -241,13 +242,13 @@ func (f *FSContext) SetRootDirectory(d *fs.Dirent) {
old := f.root
f.root = d
d.IncRef()
- old.DecRef()
+ old.DecRef(ctx)
}
// SetRootDirectoryVFS2 sets the root directory. It takes a reference on vd.
//
// This is not a valid call after free.
-func (f *FSContext) SetRootDirectoryVFS2(vd vfs.VirtualDentry) {
+func (f *FSContext) SetRootDirectoryVFS2(ctx context.Context, vd vfs.VirtualDentry) {
if !vd.Ok() {
panic("FSContext.SetRootDirectoryVFS2 called with zero-value VirtualDentry")
}
@@ -263,7 +264,7 @@ func (f *FSContext) SetRootDirectoryVFS2(vd vfs.VirtualDentry) {
vd.IncRef()
f.rootVFS2 = vd
f.mu.Unlock()
- old.DecRef()
+ old.DecRef(ctx)
}
// Umask returns the current umask.
diff --git a/pkg/sentry/kernel/futex/futex.go b/pkg/sentry/kernel/futex/futex.go
index bcc1b29a8..e4dcc4d40 100644
--- a/pkg/sentry/kernel/futex/futex.go
+++ b/pkg/sentry/kernel/futex/futex.go
@@ -19,6 +19,7 @@ package futex
import (
"gvisor.dev/gvisor/pkg/abi/linux"
+ "gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/sentry/memmap"
"gvisor.dev/gvisor/pkg/sync"
"gvisor.dev/gvisor/pkg/syserror"
@@ -66,9 +67,9 @@ type Key struct {
Offset uint64
}
-func (k *Key) release() {
+func (k *Key) release(t Target) {
if k.MappingIdentity != nil {
- k.MappingIdentity.DecRef()
+ k.MappingIdentity.DecRef(t)
}
k.Mappable = nil
k.MappingIdentity = nil
@@ -94,6 +95,8 @@ func (k *Key) matches(k2 *Key) bool {
// Target abstracts memory accesses and keys.
type Target interface {
+ context.Context
+
// SwapUint32 gives access to usermem.IO.SwapUint32.
SwapUint32(addr usermem.Addr, new uint32) (uint32, error)
@@ -296,7 +299,7 @@ func (b *bucket) wakeWaiterLocked(w *Waiter) {
// bucket "to".
//
// Preconditions: b and to must be locked.
-func (b *bucket) requeueLocked(to *bucket, key, nkey *Key, n int) int {
+func (b *bucket) requeueLocked(t Target, to *bucket, key, nkey *Key, n int) int {
done := 0
for w := b.waiters.Front(); done < n && w != nil; {
if !w.key.matches(key) {
@@ -308,7 +311,7 @@ func (b *bucket) requeueLocked(to *bucket, key, nkey *Key, n int) int {
requeued := w
w = w.Next() // Next iteration.
b.waiters.Remove(requeued)
- requeued.key.release()
+ requeued.key.release(t)
requeued.key = nkey.clone()
to.waiters.PushBack(requeued)
requeued.bucket.Store(to)
@@ -456,7 +459,7 @@ func (m *Manager) Wake(t Target, addr usermem.Addr, private bool, bitmask uint32
r := b.wakeLocked(&k, bitmask, n)
b.mu.Unlock()
- k.release()
+ k.release(t)
return r, nil
}
@@ -465,12 +468,12 @@ func (m *Manager) doRequeue(t Target, addr, naddr usermem.Addr, private bool, ch
if err != nil {
return 0, err
}
- defer k1.release()
+ defer k1.release(t)
k2, err := getKey(t, naddr, private)
if err != nil {
return 0, err
}
- defer k2.release()
+ defer k2.release(t)
b1, b2 := m.lockBuckets(&k1, &k2)
defer b1.mu.Unlock()
@@ -488,7 +491,7 @@ func (m *Manager) doRequeue(t Target, addr, naddr usermem.Addr, private bool, ch
done := b1.wakeLocked(&k1, ^uint32(0), nwake)
// Requeue the number required.
- b1.requeueLocked(b2, &k1, &k2, nreq)
+ b1.requeueLocked(t, b2, &k1, &k2, nreq)
return done, nil
}
@@ -515,12 +518,12 @@ func (m *Manager) WakeOp(t Target, addr1, addr2 usermem.Addr, private bool, nwak
if err != nil {
return 0, err
}
- defer k1.release()
+ defer k1.release(t)
k2, err := getKey(t, addr2, private)
if err != nil {
return 0, err
}
- defer k2.release()
+ defer k2.release(t)
b1, b2 := m.lockBuckets(&k1, &k2)
defer b1.mu.Unlock()
@@ -571,7 +574,7 @@ func (m *Manager) WaitPrepare(w *Waiter, t Target, addr usermem.Addr, private bo
// Perform our atomic check.
if err := check(t, addr, val); err != nil {
b.mu.Unlock()
- w.key.release()
+ w.key.release(t)
return err
}
@@ -585,7 +588,7 @@ func (m *Manager) WaitPrepare(w *Waiter, t Target, addr usermem.Addr, private bo
// WaitComplete must be called when a Waiter previously added by WaitPrepare is
// no longer eligible to be woken.
-func (m *Manager) WaitComplete(w *Waiter) {
+func (m *Manager) WaitComplete(w *Waiter, t Target) {
// Remove w from the bucket it's in.
for {
b := w.bucket.Load()
@@ -617,7 +620,7 @@ func (m *Manager) WaitComplete(w *Waiter) {
}
// Release references held by the waiter.
- w.key.release()
+ w.key.release(t)
}
// LockPI attempts to lock the futex following the Priority-inheritance futex
@@ -648,13 +651,13 @@ func (m *Manager) LockPI(w *Waiter, t Target, addr usermem.Addr, tid uint32, pri
success, err := m.lockPILocked(w, t, addr, tid, b, try)
if err != nil {
- w.key.release()
+ w.key.release(t)
b.mu.Unlock()
return false, err
}
if success || try {
// Release waiter if it's not going to be a wait.
- w.key.release()
+ w.key.release(t)
}
b.mu.Unlock()
return success, nil
@@ -730,7 +733,7 @@ func (m *Manager) UnlockPI(t Target, addr usermem.Addr, tid uint32, private bool
err = m.unlockPILocked(t, addr, tid, b, &k)
- k.release()
+ k.release(t)
b.mu.Unlock()
return err
}
diff --git a/pkg/sentry/kernel/kernel.go b/pkg/sentry/kernel/kernel.go
index 15dae0f5b..316df249d 100644
--- a/pkg/sentry/kernel/kernel.go
+++ b/pkg/sentry/kernel/kernel.go
@@ -376,7 +376,8 @@ func (k *Kernel) Init(args InitKernelArgs) error {
k.netlinkPorts = port.New()
if VFS2Enabled {
- if err := k.vfs.Init(); err != nil {
+ ctx := k.SupervisorContext()
+ if err := k.vfs.Init(ctx); err != nil {
return fmt.Errorf("failed to initialize VFS: %v", err)
}
@@ -384,19 +385,19 @@ func (k *Kernel) Init(args InitKernelArgs) error {
if err != nil {
return fmt.Errorf("failed to create pipefs filesystem: %v", err)
}
- defer pipeFilesystem.DecRef()
+ defer pipeFilesystem.DecRef(ctx)
pipeMount, err := k.vfs.NewDisconnectedMount(pipeFilesystem, nil, &vfs.MountOptions{})
if err != nil {
return fmt.Errorf("failed to create pipefs mount: %v", err)
}
k.pipeMount = pipeMount
- tmpfsFilesystem, tmpfsRoot, err := tmpfs.NewFilesystem(k.SupervisorContext(), &k.vfs, auth.NewRootCredentials(k.rootUserNamespace))
+ tmpfsFilesystem, tmpfsRoot, err := tmpfs.NewFilesystem(ctx, &k.vfs, auth.NewRootCredentials(k.rootUserNamespace))
if err != nil {
return fmt.Errorf("failed to create tmpfs filesystem: %v", err)
}
- defer tmpfsFilesystem.DecRef()
- defer tmpfsRoot.DecRef()
+ defer tmpfsFilesystem.DecRef(ctx)
+ defer tmpfsRoot.DecRef(ctx)
shmMount, err := k.vfs.NewDisconnectedMount(tmpfsFilesystem, tmpfsRoot, &vfs.MountOptions{})
if err != nil {
return fmt.Errorf("failed to create tmpfs mount: %v", err)
@@ -407,7 +408,7 @@ func (k *Kernel) Init(args InitKernelArgs) error {
if err != nil {
return fmt.Errorf("failed to create sockfs filesystem: %v", err)
}
- defer socketFilesystem.DecRef()
+ defer socketFilesystem.DecRef(ctx)
socketMount, err := k.vfs.NewDisconnectedMount(socketFilesystem, nil, &vfs.MountOptions{})
if err != nil {
return fmt.Errorf("failed to create sockfs mount: %v", err)
@@ -430,8 +431,8 @@ func (k *Kernel) SaveTo(w wire.Writer) error {
defer k.extMu.Unlock()
// Stop time.
- k.pauseTimeLocked()
- defer k.resumeTimeLocked()
+ k.pauseTimeLocked(ctx)
+ defer k.resumeTimeLocked(ctx)
// Evict all evictable MemoryFile allocations.
k.mf.StartEvictions()
@@ -447,12 +448,12 @@ func (k *Kernel) SaveTo(w wire.Writer) error {
// Remove all epoll waiter objects from underlying wait queues.
// NOTE: for programs to resume execution in future snapshot scenarios,
// we will need to re-establish these waiter objects after saving.
- k.tasks.unregisterEpollWaiters()
+ k.tasks.unregisterEpollWaiters(ctx)
// Clear the dirent cache before saving because Dirents must be Loaded in a
// particular order (parents before children), and Loading dirents from a cache
// breaks that order.
- if err := k.flushMountSourceRefs(); err != nil {
+ if err := k.flushMountSourceRefs(ctx); err != nil {
return err
}
@@ -505,7 +506,7 @@ func (k *Kernel) SaveTo(w wire.Writer) error {
// flushMountSourceRefs flushes the MountSources for all mounted filesystems
// and open FDs.
-func (k *Kernel) flushMountSourceRefs() error {
+func (k *Kernel) flushMountSourceRefs(ctx context.Context) error {
// Flush all mount sources for currently mounted filesystems in each task.
flushed := make(map[*fs.MountNamespace]struct{})
k.tasks.mu.RLock()
@@ -521,7 +522,7 @@ func (k *Kernel) flushMountSourceRefs() error {
// There may be some open FDs whose filesystems have been unmounted. We
// must flush those as well.
- return k.tasks.forEachFDPaused(func(file *fs.File, _ *vfs.FileDescription) error {
+ return k.tasks.forEachFDPaused(ctx, func(file *fs.File, _ *vfs.FileDescription) error {
file.Dirent.Inode.MountSource.FlushDirentRefs()
return nil
})
@@ -531,7 +532,7 @@ func (k *Kernel) flushMountSourceRefs() error {
// each task.
//
// Precondition: Must be called with the kernel paused.
-func (ts *TaskSet) forEachFDPaused(f func(*fs.File, *vfs.FileDescription) error) (err error) {
+func (ts *TaskSet) forEachFDPaused(ctx context.Context, f func(*fs.File, *vfs.FileDescription) error) (err error) {
// TODO(gvisor.dev/issue/1663): Add save support for VFS2.
if VFS2Enabled {
return nil
@@ -544,7 +545,7 @@ func (ts *TaskSet) forEachFDPaused(f func(*fs.File, *vfs.FileDescription) error)
if t.fdTable == nil {
continue
}
- t.fdTable.forEach(func(_ int32, file *fs.File, fileVFS2 *vfs.FileDescription, _ FDFlags) {
+ t.fdTable.forEach(ctx, func(_ int32, file *fs.File, fileVFS2 *vfs.FileDescription, _ FDFlags) {
if lastErr := f(file, fileVFS2); lastErr != nil && err == nil {
err = lastErr
}
@@ -555,7 +556,7 @@ func (ts *TaskSet) forEachFDPaused(f func(*fs.File, *vfs.FileDescription) error)
func (ts *TaskSet) flushWritesToFiles(ctx context.Context) error {
// TODO(gvisor.dev/issue/1663): Add save support for VFS2.
- return ts.forEachFDPaused(func(file *fs.File, _ *vfs.FileDescription) error {
+ return ts.forEachFDPaused(ctx, func(file *fs.File, _ *vfs.FileDescription) error {
if flags := file.Flags(); !flags.Write {
return nil
}
@@ -602,7 +603,7 @@ func (k *Kernel) invalidateUnsavableMappings(ctx context.Context) error {
return nil
}
-func (ts *TaskSet) unregisterEpollWaiters() {
+func (ts *TaskSet) unregisterEpollWaiters(ctx context.Context) {
// TODO(gvisor.dev/issue/1663): Add save support for VFS2.
if VFS2Enabled {
return
@@ -623,7 +624,7 @@ func (ts *TaskSet) unregisterEpollWaiters() {
if _, ok := processed[t.fdTable]; ok {
continue
}
- t.fdTable.forEach(func(_ int32, file *fs.File, _ *vfs.FileDescription, _ FDFlags) {
+ t.fdTable.forEach(ctx, func(_ int32, file *fs.File, _ *vfs.FileDescription, _ FDFlags) {
if e, ok := file.FileOperations.(*epoll.EventPoll); ok {
e.UnregisterEpollWaiters()
}
@@ -900,7 +901,7 @@ func (k *Kernel) CreateProcess(args CreateProcessArgs) (*ThreadGroup, ThreadID,
root := args.MountNamespaceVFS2.Root()
// The call to newFSContext below will take a reference on root, so we
// don't need to hold this one.
- defer root.DecRef()
+ defer root.DecRef(ctx)
// Grab the working directory.
wd := root // Default.
@@ -918,7 +919,7 @@ func (k *Kernel) CreateProcess(args CreateProcessArgs) (*ThreadGroup, ThreadID,
if err != nil {
return nil, 0, fmt.Errorf("failed to find initial working directory %q: %v", args.WorkingDirectory, err)
}
- defer wd.DecRef()
+ defer wd.DecRef(ctx)
}
opener = fsbridge.NewVFSLookup(mntnsVFS2, root, wd)
fsContext = NewFSContextVFS2(root, wd, args.Umask)
@@ -933,7 +934,7 @@ func (k *Kernel) CreateProcess(args CreateProcessArgs) (*ThreadGroup, ThreadID,
root := mntns.Root()
// The call to newFSContext below will take a reference on root, so we
// don't need to hold this one.
- defer root.DecRef()
+ defer root.DecRef(ctx)
// Grab the working directory.
remainingTraversals := args.MaxSymlinkTraversals
@@ -944,7 +945,7 @@ func (k *Kernel) CreateProcess(args CreateProcessArgs) (*ThreadGroup, ThreadID,
if err != nil {
return nil, 0, fmt.Errorf("failed to find initial working directory %q: %v", args.WorkingDirectory, err)
}
- defer wd.DecRef()
+ defer wd.DecRef(ctx)
}
opener = fsbridge.NewFSLookup(mntns, root, wd)
fsContext = newFSContext(root, wd, args.Umask)
@@ -1054,7 +1055,7 @@ func (k *Kernel) Start() error {
// If k was created by LoadKernelFrom, timers were stopped during
// Kernel.SaveTo and need to be resumed. If k was created by NewKernel,
// this is a no-op.
- k.resumeTimeLocked()
+ k.resumeTimeLocked(k.SupervisorContext())
// Start task goroutines.
k.tasks.mu.RLock()
defer k.tasks.mu.RUnlock()
@@ -1068,7 +1069,7 @@ func (k *Kernel) Start() error {
//
// Preconditions: Any task goroutines running in k must be stopped. k.extMu
// must be locked.
-func (k *Kernel) pauseTimeLocked() {
+func (k *Kernel) pauseTimeLocked(ctx context.Context) {
// k.cpuClockTicker may be nil since Kernel.SaveTo() may be called before
// Kernel.Start().
if k.cpuClockTicker != nil {
@@ -1090,7 +1091,7 @@ func (k *Kernel) pauseTimeLocked() {
// This means we'll iterate FDTables shared by multiple tasks repeatedly,
// but ktime.Timer.Pause is idempotent so this is harmless.
if t.fdTable != nil {
- t.fdTable.forEach(func(_ int32, file *fs.File, fd *vfs.FileDescription, _ FDFlags) {
+ t.fdTable.forEach(ctx, func(_ int32, file *fs.File, fd *vfs.FileDescription, _ FDFlags) {
if VFS2Enabled {
if tfd, ok := fd.Impl().(*timerfd.TimerFileDescription); ok {
tfd.PauseTimer()
@@ -1112,7 +1113,7 @@ func (k *Kernel) pauseTimeLocked() {
//
// Preconditions: Any task goroutines running in k must be stopped. k.extMu
// must be locked.
-func (k *Kernel) resumeTimeLocked() {
+func (k *Kernel) resumeTimeLocked(ctx context.Context) {
if k.cpuClockTicker != nil {
k.cpuClockTicker.Resume()
}
@@ -1126,7 +1127,7 @@ func (k *Kernel) resumeTimeLocked() {
}
}
if t.fdTable != nil {
- t.fdTable.forEach(func(_ int32, file *fs.File, fd *vfs.FileDescription, _ FDFlags) {
+ t.fdTable.forEach(ctx, func(_ int32, file *fs.File, fd *vfs.FileDescription, _ FDFlags) {
if VFS2Enabled {
if tfd, ok := fd.Impl().(*timerfd.TimerFileDescription); ok {
tfd.ResumeTimer()
@@ -1511,7 +1512,7 @@ type SocketEntry struct {
}
// WeakRefGone implements refs.WeakRefUser.WeakRefGone.
-func (s *SocketEntry) WeakRefGone() {
+func (s *SocketEntry) WeakRefGone(context.Context) {
s.k.extMu.Lock()
s.k.sockets.Remove(s)
s.k.extMu.Unlock()
@@ -1600,7 +1601,7 @@ func (ctx supervisorContext) Value(key interface{}) interface{} {
return vfs.VirtualDentry{}
}
mntns := ctx.k.GlobalInit().Leader().MountNamespaceVFS2()
- defer mntns.DecRef()
+ defer mntns.DecRef(ctx)
// Root() takes a reference on the root dirent for us.
return mntns.Root()
case vfs.CtxMountNamespace:
diff --git a/pkg/sentry/kernel/pipe/node.go b/pkg/sentry/kernel/pipe/node.go
index 4b688c627..6497dc4ba 100644
--- a/pkg/sentry/kernel/pipe/node.go
+++ b/pkg/sentry/kernel/pipe/node.go
@@ -93,7 +93,7 @@ func (i *inodeOperations) GetFile(ctx context.Context, d *fs.Dirent, flags fs.Fi
if i.p.isNamed && !flags.NonBlocking && !i.p.HasWriters() {
if !waitFor(&i.mu, &i.wWakeup, ctx) {
- r.DecRef()
+ r.DecRef(ctx)
return nil, syserror.ErrInterrupted
}
}
@@ -111,12 +111,12 @@ func (i *inodeOperations) GetFile(ctx context.Context, d *fs.Dirent, flags fs.Fi
// On a nonblocking, write-only open, the open fails with ENXIO if the
// read side isn't open yet.
if flags.NonBlocking {
- w.DecRef()
+ w.DecRef(ctx)
return nil, syserror.ENXIO
}
if !waitFor(&i.mu, &i.rWakeup, ctx) {
- w.DecRef()
+ w.DecRef(ctx)
return nil, syserror.ErrInterrupted
}
}
diff --git a/pkg/sentry/kernel/pipe/pipe.go b/pkg/sentry/kernel/pipe/pipe.go
index 79645d7d2..297e8f28f 100644
--- a/pkg/sentry/kernel/pipe/pipe.go
+++ b/pkg/sentry/kernel/pipe/pipe.go
@@ -152,7 +152,7 @@ func NewConnectedPipe(ctx context.Context, sizeBytes, atomicIOBytes int64) (*fs.
d := fs.NewDirent(ctx, fs.NewInode(ctx, iops, ms, sattr), fmt.Sprintf("pipe:[%d]", ino))
// The p.Open calls below will each take a reference on the Dirent. We
// must drop the one we already have.
- defer d.DecRef()
+ defer d.DecRef(ctx)
return p.Open(ctx, d, fs.FileFlags{Read: true}), p.Open(ctx, d, fs.FileFlags{Write: true})
}
diff --git a/pkg/sentry/kernel/pipe/pipe_util.go b/pkg/sentry/kernel/pipe/pipe_util.go
index aacf28da2..6d58b682f 100644
--- a/pkg/sentry/kernel/pipe/pipe_util.go
+++ b/pkg/sentry/kernel/pipe/pipe_util.go
@@ -33,7 +33,7 @@ import (
// the old fs architecture.
// Release cleans up the pipe's state.
-func (p *Pipe) Release() {
+func (p *Pipe) Release(context.Context) {
p.rClose()
p.wClose()
diff --git a/pkg/sentry/kernel/pipe/reader.go b/pkg/sentry/kernel/pipe/reader.go
index 7724b4452..ac18785c0 100644
--- a/pkg/sentry/kernel/pipe/reader.go
+++ b/pkg/sentry/kernel/pipe/reader.go
@@ -15,6 +15,7 @@
package pipe
import (
+ "gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/waiter"
)
@@ -29,7 +30,7 @@ type Reader struct {
// Release implements fs.FileOperations.Release.
//
// This overrides ReaderWriter.Release.
-func (r *Reader) Release() {
+func (r *Reader) Release(context.Context) {
r.Pipe.rClose()
// Wake up writers.
diff --git a/pkg/sentry/kernel/pipe/vfs.go b/pkg/sentry/kernel/pipe/vfs.go
index 45d4c5fc1..28f998e45 100644
--- a/pkg/sentry/kernel/pipe/vfs.go
+++ b/pkg/sentry/kernel/pipe/vfs.go
@@ -101,7 +101,7 @@ func (vp *VFSPipe) Open(ctx context.Context, mnt *vfs.Mount, vfsd *vfs.Dentry, s
// If this pipe is being opened as blocking and there's no
// writer, we have to wait for a writer to open the other end.
if vp.pipe.isNamed && statusFlags&linux.O_NONBLOCK == 0 && !vp.pipe.HasWriters() && !waitFor(&vp.mu, &vp.wWakeup, ctx) {
- fd.DecRef()
+ fd.DecRef(ctx)
return nil, syserror.EINTR
}
@@ -112,12 +112,12 @@ func (vp *VFSPipe) Open(ctx context.Context, mnt *vfs.Mount, vfsd *vfs.Dentry, s
// Non-blocking, write-only opens fail with ENXIO when the read
// side isn't open yet.
if statusFlags&linux.O_NONBLOCK != 0 {
- fd.DecRef()
+ fd.DecRef(ctx)
return nil, syserror.ENXIO
}
// Wait for a reader to open the other end.
if !waitFor(&vp.mu, &vp.rWakeup, ctx) {
- fd.DecRef()
+ fd.DecRef(ctx)
return nil, syserror.EINTR
}
}
@@ -169,7 +169,7 @@ type VFSPipeFD struct {
}
// Release implements vfs.FileDescriptionImpl.Release.
-func (fd *VFSPipeFD) Release() {
+func (fd *VFSPipeFD) Release(context.Context) {
var event waiter.EventMask
if fd.vfsfd.IsReadable() {
fd.pipe.rClose()
diff --git a/pkg/sentry/kernel/pipe/writer.go b/pkg/sentry/kernel/pipe/writer.go
index 5bc6aa931..ef4b70ca3 100644
--- a/pkg/sentry/kernel/pipe/writer.go
+++ b/pkg/sentry/kernel/pipe/writer.go
@@ -15,6 +15,7 @@
package pipe
import (
+ "gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/waiter"
)
@@ -29,7 +30,7 @@ type Writer struct {
// Release implements fs.FileOperations.Release.
//
// This overrides ReaderWriter.Release.
-func (w *Writer) Release() {
+func (w *Writer) Release(context.Context) {
w.Pipe.wClose()
// Wake up readers.
diff --git a/pkg/sentry/kernel/sessions.go b/pkg/sentry/kernel/sessions.go
index 0e19286de..5c4c622c2 100644
--- a/pkg/sentry/kernel/sessions.go
+++ b/pkg/sentry/kernel/sessions.go
@@ -16,6 +16,7 @@ package kernel
import (
"gvisor.dev/gvisor/pkg/abi/linux"
+ "gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/refs"
"gvisor.dev/gvisor/pkg/sentry/arch"
"gvisor.dev/gvisor/pkg/syserror"
@@ -70,7 +71,7 @@ func (s *Session) incRef() {
//
// Precondition: callers must hold TaskSet.mu for writing.
func (s *Session) decRef() {
- s.refs.DecRefWithDestructor(func() {
+ s.refs.DecRefWithDestructor(nil, func(context.Context) {
// Remove translations from the leader.
for ns := s.leader.pidns; ns != nil; ns = ns.parent {
id := ns.sids[s]
@@ -162,7 +163,7 @@ func (pg *ProcessGroup) decRefWithParent(parentPG *ProcessGroup) {
}
alive := true
- pg.refs.DecRefWithDestructor(func() {
+ pg.refs.DecRefWithDestructor(nil, func(context.Context) {
alive = false // don't bother with handleOrphan.
// Remove translations from the originator.
diff --git a/pkg/sentry/kernel/shm/shm.go b/pkg/sentry/kernel/shm/shm.go
index 55b4c2cdb..13ec7afe0 100644
--- a/pkg/sentry/kernel/shm/shm.go
+++ b/pkg/sentry/kernel/shm/shm.go
@@ -431,8 +431,8 @@ func (s *Shm) InodeID() uint64 {
// DecRef overrides refs.RefCount.DecRef with a destructor.
//
// Precondition: Caller must not hold s.mu.
-func (s *Shm) DecRef() {
- s.DecRefWithDestructor(s.destroy)
+func (s *Shm) DecRef(ctx context.Context) {
+ s.DecRefWithDestructor(ctx, s.destroy)
}
// Msync implements memmap.MappingIdentity.Msync. Msync is a no-op for shm
@@ -642,7 +642,7 @@ func (s *Shm) Set(ctx context.Context, ds *linux.ShmidDS) error {
return nil
}
-func (s *Shm) destroy() {
+func (s *Shm) destroy(context.Context) {
s.mfp.MemoryFile().DecRef(s.fr)
s.registry.remove(s)
}
@@ -651,7 +651,7 @@ func (s *Shm) destroy() {
// destroyed once it has no references. MarkDestroyed may be called multiple
// times, and is safe to call after a segment has already been destroyed. See
// shmctl(IPC_RMID).
-func (s *Shm) MarkDestroyed() {
+func (s *Shm) MarkDestroyed(ctx context.Context) {
s.registry.dissociateKey(s)
s.mu.Lock()
@@ -663,7 +663,7 @@ func (s *Shm) MarkDestroyed() {
//
// N.B. This cannot be the final DecRef, as the caller also
// holds a reference.
- s.DecRef()
+ s.DecRef(ctx)
return
}
}
diff --git a/pkg/sentry/kernel/signalfd/signalfd.go b/pkg/sentry/kernel/signalfd/signalfd.go
index 8243bb93e..b07e1c1bd 100644
--- a/pkg/sentry/kernel/signalfd/signalfd.go
+++ b/pkg/sentry/kernel/signalfd/signalfd.go
@@ -76,7 +76,7 @@ func New(ctx context.Context, mask linux.SignalSet) (*fs.File, error) {
}
// Release implements fs.FileOperations.Release.
-func (s *SignalOperations) Release() {}
+func (s *SignalOperations) Release(context.Context) {}
// Mask returns the signal mask.
func (s *SignalOperations) Mask() linux.SignalSet {
diff --git a/pkg/sentry/kernel/task.go b/pkg/sentry/kernel/task.go
index c4db05bd8..5aee699e7 100644
--- a/pkg/sentry/kernel/task.go
+++ b/pkg/sentry/kernel/task.go
@@ -730,17 +730,17 @@ func (t *Task) SyscallRestartBlock() SyscallRestartBlock {
func (t *Task) IsChrooted() bool {
if VFS2Enabled {
realRoot := t.mountNamespaceVFS2.Root()
- defer realRoot.DecRef()
+ defer realRoot.DecRef(t)
root := t.fsContext.RootDirectoryVFS2()
- defer root.DecRef()
+ defer root.DecRef(t)
return root != realRoot
}
realRoot := t.tg.mounts.Root()
- defer realRoot.DecRef()
+ defer realRoot.DecRef(t)
root := t.fsContext.RootDirectory()
if root != nil {
- defer root.DecRef()
+ defer root.DecRef(t)
}
return root != realRoot
}
diff --git a/pkg/sentry/kernel/task_clone.go b/pkg/sentry/kernel/task_clone.go
index e1ecca99e..fe6ba6041 100644
--- a/pkg/sentry/kernel/task_clone.go
+++ b/pkg/sentry/kernel/task_clone.go
@@ -237,7 +237,7 @@ func (t *Task) Clone(opts *CloneOptions) (ThreadID, *SyscallControl, error) {
var fdTable *FDTable
if opts.NewFiles {
- fdTable = t.fdTable.Fork()
+ fdTable = t.fdTable.Fork(t)
} else {
fdTable = t.fdTable
fdTable.IncRef()
@@ -294,7 +294,7 @@ func (t *Task) Clone(opts *CloneOptions) (ThreadID, *SyscallControl, error) {
nt, err := t.tg.pidns.owner.NewTask(cfg)
if err != nil {
if opts.NewThreadGroup {
- tg.release()
+ tg.release(t)
}
return 0, nil, err
}
@@ -510,7 +510,7 @@ func (t *Task) Unshare(opts *SharingOptions) error {
var oldFDTable *FDTable
if opts.NewFiles {
oldFDTable = t.fdTable
- t.fdTable = oldFDTable.Fork()
+ t.fdTable = oldFDTable.Fork(t)
}
var oldFSContext *FSContext
if opts.NewFSContext {
@@ -519,10 +519,10 @@ func (t *Task) Unshare(opts *SharingOptions) error {
}
t.mu.Unlock()
if oldFDTable != nil {
- oldFDTable.DecRef()
+ oldFDTable.DecRef(t)
}
if oldFSContext != nil {
- oldFSContext.DecRef()
+ oldFSContext.DecRef(t)
}
return nil
}
diff --git a/pkg/sentry/kernel/task_exec.go b/pkg/sentry/kernel/task_exec.go
index 7803b98d0..47c28b8ff 100644
--- a/pkg/sentry/kernel/task_exec.go
+++ b/pkg/sentry/kernel/task_exec.go
@@ -199,11 +199,11 @@ func (r *runSyscallAfterExecStop) execute(t *Task) taskRunState {
t.tg.pidns.owner.mu.Unlock()
oldFDTable := t.fdTable
- t.fdTable = t.fdTable.Fork()
- oldFDTable.DecRef()
+ t.fdTable = t.fdTable.Fork(t)
+ oldFDTable.DecRef(t)
// Remove FDs with the CloseOnExec flag set.
- t.fdTable.RemoveIf(func(_ *fs.File, _ *vfs.FileDescription, flags FDFlags) bool {
+ t.fdTable.RemoveIf(t, func(_ *fs.File, _ *vfs.FileDescription, flags FDFlags) bool {
return flags.CloseOnExec
})
diff --git a/pkg/sentry/kernel/task_exit.go b/pkg/sentry/kernel/task_exit.go
index 231ac548a..c165d6cb1 100644
--- a/pkg/sentry/kernel/task_exit.go
+++ b/pkg/sentry/kernel/task_exit.go
@@ -269,12 +269,12 @@ func (*runExitMain) execute(t *Task) taskRunState {
// Releasing the MM unblocks a blocked CLONE_VFORK parent.
t.unstopVforkParent()
- t.fsContext.DecRef()
- t.fdTable.DecRef()
+ t.fsContext.DecRef(t)
+ t.fdTable.DecRef(t)
t.mu.Lock()
if t.mountNamespaceVFS2 != nil {
- t.mountNamespaceVFS2.DecRef()
+ t.mountNamespaceVFS2.DecRef(t)
t.mountNamespaceVFS2 = nil
}
t.mu.Unlock()
@@ -282,7 +282,7 @@ func (*runExitMain) execute(t *Task) taskRunState {
// If this is the last task to exit from the thread group, release the
// thread group's resources.
if lastExiter {
- t.tg.release()
+ t.tg.release(t)
}
// Detach tracees.
diff --git a/pkg/sentry/kernel/task_log.go b/pkg/sentry/kernel/task_log.go
index eeccaa197..ab86ceedc 100644
--- a/pkg/sentry/kernel/task_log.go
+++ b/pkg/sentry/kernel/task_log.go
@@ -203,6 +203,6 @@ func (t *Task) traceExecEvent(tc *TaskContext) {
trace.Logf(t.traceContext, traceCategory, "exec: << unknown >>")
return
}
- defer file.DecRef()
+ defer file.DecRef(t)
trace.Logf(t.traceContext, traceCategory, "exec: %s", file.PathnameWithDeleted(t))
}
diff --git a/pkg/sentry/kernel/task_start.go b/pkg/sentry/kernel/task_start.go
index 8485fb4b6..64c1e120a 100644
--- a/pkg/sentry/kernel/task_start.go
+++ b/pkg/sentry/kernel/task_start.go
@@ -102,10 +102,10 @@ func (ts *TaskSet) NewTask(cfg *TaskConfig) (*Task, error) {
t, err := ts.newTask(cfg)
if err != nil {
cfg.TaskContext.release()
- cfg.FSContext.DecRef()
- cfg.FDTable.DecRef()
+ cfg.FSContext.DecRef(t)
+ cfg.FDTable.DecRef(t)
if cfg.MountNamespaceVFS2 != nil {
- cfg.MountNamespaceVFS2.DecRef()
+ cfg.MountNamespaceVFS2.DecRef(t)
}
return nil, err
}
diff --git a/pkg/sentry/kernel/thread_group.go b/pkg/sentry/kernel/thread_group.go
index 4dfd2c990..0b34c0099 100644
--- a/pkg/sentry/kernel/thread_group.go
+++ b/pkg/sentry/kernel/thread_group.go
@@ -308,7 +308,7 @@ func (tg *ThreadGroup) Limits() *limits.LimitSet {
}
// release releases the thread group's resources.
-func (tg *ThreadGroup) release() {
+func (tg *ThreadGroup) release(t *Task) {
// Timers must be destroyed without holding the TaskSet or signal mutexes
// since timers send signals with Timer.mu locked.
tg.itimerRealTimer.Destroy()
@@ -325,7 +325,7 @@ func (tg *ThreadGroup) release() {
it.DestroyTimer()
}
if tg.mounts != nil {
- tg.mounts.DecRef()
+ tg.mounts.DecRef(t)
}
}
diff --git a/pkg/sentry/loader/elf.go b/pkg/sentry/loader/elf.go
index ddeaff3db..20dd1cc21 100644
--- a/pkg/sentry/loader/elf.go
+++ b/pkg/sentry/loader/elf.go
@@ -281,7 +281,7 @@ func mapSegment(ctx context.Context, m *mm.MemoryManager, f fsbridge.File, phdr
}
defer func() {
if mopts.MappingIdentity != nil {
- mopts.MappingIdentity.DecRef()
+ mopts.MappingIdentity.DecRef(ctx)
}
}()
if err := f.ConfigureMMap(ctx, &mopts); err != nil {
@@ -663,7 +663,7 @@ func loadELF(ctx context.Context, args LoadArgs) (loadedELF, arch.Context, error
ctx.Infof("Error opening interpreter %s: %v", bin.interpreter, err)
return loadedELF{}, nil, err
}
- defer intFile.DecRef()
+ defer intFile.DecRef(ctx)
interp, err = loadInterpreterELF(ctx, args.MemoryManager, intFile, bin)
if err != nil {
diff --git a/pkg/sentry/loader/loader.go b/pkg/sentry/loader/loader.go
index 986c7fb4d..8d6802ea3 100644
--- a/pkg/sentry/loader/loader.go
+++ b/pkg/sentry/loader/loader.go
@@ -154,7 +154,7 @@ func loadExecutable(ctx context.Context, args LoadArgs) (loadedELF, arch.Context
return loadedELF{}, nil, nil, nil, err
}
// Ensure file is release in case the code loops or errors out.
- defer args.File.DecRef()
+ defer args.File.DecRef(ctx)
} else {
if err := checkIsRegularFile(ctx, args.File, args.Filename); err != nil {
return loadedELF{}, nil, nil, nil, err
@@ -223,7 +223,7 @@ func Load(ctx context.Context, args LoadArgs, extraAuxv []arch.AuxEntry, vdso *V
if err != nil {
return 0, nil, "", syserr.NewDynamic(fmt.Sprintf("failed to load %s: %v", args.Filename, err), syserr.FromError(err).ToLinux())
}
- defer file.DecRef()
+ defer file.DecRef(ctx)
// Load the VDSO.
vdsoAddr, err := loadVDSO(ctx, args.MemoryManager, vdso, loaded)
@@ -292,7 +292,7 @@ func Load(ctx context.Context, args LoadArgs, extraAuxv []arch.AuxEntry, vdso *V
m.SetEnvvStart(sl.EnvvStart)
m.SetEnvvEnd(sl.EnvvEnd)
m.SetAuxv(auxv)
- m.SetExecutable(file)
+ m.SetExecutable(ctx, file)
symbolValue, err := getSymbolValueFromVDSO("rt_sigreturn")
if err != nil {
diff --git a/pkg/sentry/memmap/memmap.go b/pkg/sentry/memmap/memmap.go
index c188f6c29..59c92c7e8 100644
--- a/pkg/sentry/memmap/memmap.go
+++ b/pkg/sentry/memmap/memmap.go
@@ -238,7 +238,7 @@ type MappingIdentity interface {
IncRef()
// DecRef decrements the MappingIdentity's reference count.
- DecRef()
+ DecRef(ctx context.Context)
// MappedName returns the application-visible name shown in
// /proc/[pid]/maps.
diff --git a/pkg/sentry/mm/aio_context.go b/pkg/sentry/mm/aio_context.go
index 1999ec706..16fea53c4 100644
--- a/pkg/sentry/mm/aio_context.go
+++ b/pkg/sentry/mm/aio_context.go
@@ -258,8 +258,8 @@ func newAIOMappable(mfp pgalloc.MemoryFileProvider) (*aioMappable, error) {
}
// DecRef implements refs.RefCounter.DecRef.
-func (m *aioMappable) DecRef() {
- m.AtomicRefCount.DecRefWithDestructor(func() {
+func (m *aioMappable) DecRef(ctx context.Context) {
+ m.AtomicRefCount.DecRefWithDestructor(ctx, func(context.Context) {
m.mfp.MemoryFile().DecRef(m.fr)
})
}
@@ -367,7 +367,7 @@ func (mm *MemoryManager) NewAIOContext(ctx context.Context, events uint32) (uint
if err != nil {
return 0, err
}
- defer m.DecRef()
+ defer m.DecRef(ctx)
addr, err := mm.MMap(ctx, memmap.MMapOpts{
Length: aioRingBufferSize,
MappingIdentity: m,
diff --git a/pkg/sentry/mm/lifecycle.go b/pkg/sentry/mm/lifecycle.go
index aac56679b..4d7773f8b 100644
--- a/pkg/sentry/mm/lifecycle.go
+++ b/pkg/sentry/mm/lifecycle.go
@@ -258,7 +258,7 @@ func (mm *MemoryManager) DecUsers(ctx context.Context) {
mm.executable = nil
mm.metadataMu.Unlock()
if exe != nil {
- exe.DecRef()
+ exe.DecRef(ctx)
}
mm.activeMu.Lock()
diff --git a/pkg/sentry/mm/metadata.go b/pkg/sentry/mm/metadata.go
index 28e5057f7..0cfd60f6c 100644
--- a/pkg/sentry/mm/metadata.go
+++ b/pkg/sentry/mm/metadata.go
@@ -15,6 +15,7 @@
package mm
import (
+ "gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/sentry/arch"
"gvisor.dev/gvisor/pkg/sentry/fsbridge"
"gvisor.dev/gvisor/pkg/usermem"
@@ -147,7 +148,7 @@ func (mm *MemoryManager) Executable() fsbridge.File {
// SetExecutable sets the executable.
//
// This takes a reference on d.
-func (mm *MemoryManager) SetExecutable(file fsbridge.File) {
+func (mm *MemoryManager) SetExecutable(ctx context.Context, file fsbridge.File) {
mm.metadataMu.Lock()
// Grab a new reference.
@@ -164,7 +165,7 @@ func (mm *MemoryManager) SetExecutable(file fsbridge.File) {
// Do this without holding the lock, since it may wind up doing some
// I/O to sync the dirent, etc.
if orig != nil {
- orig.DecRef()
+ orig.DecRef(ctx)
}
}
diff --git a/pkg/sentry/mm/special_mappable.go b/pkg/sentry/mm/special_mappable.go
index 0e142fb11..4cdb52eb6 100644
--- a/pkg/sentry/mm/special_mappable.go
+++ b/pkg/sentry/mm/special_mappable.go
@@ -50,8 +50,8 @@ func NewSpecialMappable(name string, mfp pgalloc.MemoryFileProvider, fr memmap.F
}
// DecRef implements refs.RefCounter.DecRef.
-func (m *SpecialMappable) DecRef() {
- m.AtomicRefCount.DecRefWithDestructor(func() {
+func (m *SpecialMappable) DecRef(ctx context.Context) {
+ m.AtomicRefCount.DecRefWithDestructor(ctx, func(context.Context) {
m.mfp.MemoryFile().DecRef(m.fr)
})
}
diff --git a/pkg/sentry/mm/syscalls.go b/pkg/sentry/mm/syscalls.go
index 3f496aa9f..e74d4e1c1 100644
--- a/pkg/sentry/mm/syscalls.go
+++ b/pkg/sentry/mm/syscalls.go
@@ -101,7 +101,7 @@ func (mm *MemoryManager) MMap(ctx context.Context, opts memmap.MMapOpts) (userme
if err != nil {
return 0, err
}
- defer m.DecRef()
+ defer m.DecRef(ctx)
opts.MappingIdentity = m
opts.Mappable = m
}
@@ -1191,7 +1191,7 @@ func (mm *MemoryManager) MSync(ctx context.Context, addr usermem.Addr, length ui
mr := vseg.mappableRangeOf(vseg.Range().Intersect(ar))
mm.mappingMu.RUnlock()
err := id.Msync(ctx, mr)
- id.DecRef()
+ id.DecRef(ctx)
if err != nil {
return err
}
diff --git a/pkg/sentry/mm/vma.go b/pkg/sentry/mm/vma.go
index 16d8207e9..bd751d696 100644
--- a/pkg/sentry/mm/vma.go
+++ b/pkg/sentry/mm/vma.go
@@ -377,7 +377,7 @@ func (mm *MemoryManager) removeVMAsLocked(ctx context.Context, ar usermem.AddrRa
vma.mappable.RemoveMapping(ctx, mm, vmaAR, vma.off, vma.canWriteMappableLocked())
}
if vma.id != nil {
- vma.id.DecRef()
+ vma.id.DecRef(ctx)
}
mm.usageAS -= uint64(vmaAR.Length())
if vma.isPrivateDataLocked() {
@@ -446,7 +446,7 @@ func (vmaSetFunctions) Merge(ar1 usermem.AddrRange, vma1 vma, ar2 usermem.AddrRa
}
if vma2.id != nil {
- vma2.id.DecRef()
+ vma2.id.DecRef(context.Background())
}
return vma1, true
}
diff --git a/pkg/sentry/socket/control/control.go b/pkg/sentry/socket/control/control.go
index 8b439a078..70ccf77a7 100644
--- a/pkg/sentry/socket/control/control.go
+++ b/pkg/sentry/socket/control/control.go
@@ -68,7 +68,7 @@ func NewSCMRights(t *kernel.Task, fds []int32) (SCMRights, error) {
for _, fd := range fds {
file := t.GetFile(fd)
if file == nil {
- files.Release()
+ files.Release(t)
return nil, syserror.EBADF
}
files = append(files, file)
@@ -100,9 +100,9 @@ func (fs *RightsFiles) Clone() transport.RightsControlMessage {
}
// Release implements transport.RightsControlMessage.Release.
-func (fs *RightsFiles) Release() {
+func (fs *RightsFiles) Release(ctx context.Context) {
for _, f := range *fs {
- f.DecRef()
+ f.DecRef(ctx)
}
*fs = nil
}
@@ -115,7 +115,7 @@ func rightsFDs(t *kernel.Task, rights SCMRights, cloexec bool, max int) ([]int32
fd, err := t.NewFDFrom(0, files[0], kernel.FDFlags{
CloseOnExec: cloexec,
})
- files[0].DecRef()
+ files[0].DecRef(t)
files = files[1:]
if err != nil {
t.Warningf("Error inserting FD: %v", err)
diff --git a/pkg/sentry/socket/control/control_vfs2.go b/pkg/sentry/socket/control/control_vfs2.go
index fd08179be..d9621968c 100644
--- a/pkg/sentry/socket/control/control_vfs2.go
+++ b/pkg/sentry/socket/control/control_vfs2.go
@@ -46,7 +46,7 @@ func NewSCMRightsVFS2(t *kernel.Task, fds []int32) (SCMRightsVFS2, error) {
for _, fd := range fds {
file := t.GetFileVFS2(fd)
if file == nil {
- files.Release()
+ files.Release(t)
return nil, syserror.EBADF
}
files = append(files, file)
@@ -78,9 +78,9 @@ func (fs *RightsFilesVFS2) Clone() transport.RightsControlMessage {
}
// Release implements transport.RightsControlMessage.Release.
-func (fs *RightsFilesVFS2) Release() {
+func (fs *RightsFilesVFS2) Release(ctx context.Context) {
for _, f := range *fs {
- f.DecRef()
+ f.DecRef(ctx)
}
*fs = nil
}
@@ -93,7 +93,7 @@ func rightsFDsVFS2(t *kernel.Task, rights SCMRightsVFS2, cloexec bool, max int)
fd, err := t.NewFDFromVFS2(0, files[0], kernel.FDFlags{
CloseOnExec: cloexec,
})
- files[0].DecRef()
+ files[0].DecRef(t)
files = files[1:]
if err != nil {
t.Warningf("Error inserting FD: %v", err)
diff --git a/pkg/sentry/socket/hostinet/socket.go b/pkg/sentry/socket/hostinet/socket.go
index 532a1ea5d..242e6bf76 100644
--- a/pkg/sentry/socket/hostinet/socket.go
+++ b/pkg/sentry/socket/hostinet/socket.go
@@ -100,12 +100,12 @@ func newSocketFile(ctx context.Context, family int, stype linux.SockType, protoc
return nil, syserr.FromError(err)
}
dirent := socket.NewDirent(ctx, socketDevice)
- defer dirent.DecRef()
+ defer dirent.DecRef(ctx)
return fs.NewFile(ctx, dirent, fs.FileFlags{NonBlocking: nonblock, Read: true, Write: true, NonSeekable: true}, s), nil
}
// Release implements fs.FileOperations.Release.
-func (s *socketOpsCommon) Release() {
+func (s *socketOpsCommon) Release(context.Context) {
fdnotifier.RemoveFD(int32(s.fd))
syscall.Close(s.fd)
}
@@ -269,7 +269,7 @@ func (s *socketOpsCommon) Accept(t *kernel.Task, peerRequested bool, flags int,
syscall.Close(fd)
return 0, nil, 0, err
}
- defer f.DecRef()
+ defer f.DecRef(t)
kfd, kerr = t.NewFDFromVFS2(0, f, kernel.FDFlags{
CloseOnExec: flags&syscall.SOCK_CLOEXEC != 0,
@@ -281,7 +281,7 @@ func (s *socketOpsCommon) Accept(t *kernel.Task, peerRequested bool, flags int,
syscall.Close(fd)
return 0, nil, 0, err
}
- defer f.DecRef()
+ defer f.DecRef(t)
kfd, kerr = t.NewFDFrom(0, f, kernel.FDFlags{
CloseOnExec: flags&syscall.SOCK_CLOEXEC != 0,
diff --git a/pkg/sentry/socket/netlink/provider.go b/pkg/sentry/socket/netlink/provider.go
index 0d45e5053..31e374833 100644
--- a/pkg/sentry/socket/netlink/provider.go
+++ b/pkg/sentry/socket/netlink/provider.go
@@ -97,7 +97,7 @@ func (*socketProvider) Socket(t *kernel.Task, stype linux.SockType, protocol int
}
d := socket.NewDirent(t, netlinkSocketDevice)
- defer d.DecRef()
+ defer d.DecRef(t)
return fs.NewFile(t, d, fs.FileFlags{Read: true, Write: true, NonSeekable: true}, s), nil
}
diff --git a/pkg/sentry/socket/netlink/socket.go b/pkg/sentry/socket/netlink/socket.go
index 98ca7add0..68a9b9a96 100644
--- a/pkg/sentry/socket/netlink/socket.go
+++ b/pkg/sentry/socket/netlink/socket.go
@@ -140,14 +140,14 @@ func NewSocket(t *kernel.Task, skType linux.SockType, protocol Protocol) (*Socke
// Bind the endpoint for good measure so we can connect to it. The
// bound address will never be exposed.
if err := ep.Bind(tcpip.FullAddress{Addr: "dummy"}, nil); err != nil {
- ep.Close()
+ ep.Close(t)
return nil, err
}
// Create a connection from which the kernel can write messages.
connection, err := ep.(transport.BoundEndpoint).UnidirectionalConnect(t)
if err != nil {
- ep.Close()
+ ep.Close(t)
return nil, err
}
@@ -164,9 +164,9 @@ func NewSocket(t *kernel.Task, skType linux.SockType, protocol Protocol) (*Socke
}
// Release implements fs.FileOperations.Release.
-func (s *socketOpsCommon) Release() {
- s.connection.Release()
- s.ep.Close()
+func (s *socketOpsCommon) Release(ctx context.Context) {
+ s.connection.Release(ctx)
+ s.ep.Close(ctx)
if s.bound {
s.ports.Release(s.protocol.Protocol(), s.portID)
@@ -621,7 +621,7 @@ func (s *socketOpsCommon) sendResponse(ctx context.Context, ms *MessageSet) *sys
if len(bufs) > 0 {
// RecvMsg never receives the address, so we don't need to send
// one.
- _, notify, err := s.connection.Send(bufs, cms, tcpip.FullAddress{})
+ _, notify, err := s.connection.Send(ctx, bufs, cms, tcpip.FullAddress{})
// If the buffer is full, we simply drop messages, just like
// Linux.
if err != nil && err != syserr.ErrWouldBlock {
@@ -648,7 +648,7 @@ func (s *socketOpsCommon) sendResponse(ctx context.Context, ms *MessageSet) *sys
// Add the dump_done_errno payload.
m.Put(int64(0))
- _, notify, err := s.connection.Send([][]byte{m.Finalize()}, cms, tcpip.FullAddress{})
+ _, notify, err := s.connection.Send(ctx, [][]byte{m.Finalize()}, cms, tcpip.FullAddress{})
if err != nil && err != syserr.ErrWouldBlock {
return err
}
diff --git a/pkg/sentry/socket/netlink/socket_vfs2.go b/pkg/sentry/socket/netlink/socket_vfs2.go
index dbcd8b49a..a38d25da9 100644
--- a/pkg/sentry/socket/netlink/socket_vfs2.go
+++ b/pkg/sentry/socket/netlink/socket_vfs2.go
@@ -57,14 +57,14 @@ func NewVFS2(t *kernel.Task, skType linux.SockType, protocol Protocol) (*SocketV
// Bind the endpoint for good measure so we can connect to it. The
// bound address will never be exposed.
if err := ep.Bind(tcpip.FullAddress{Addr: "dummy"}, nil); err != nil {
- ep.Close()
+ ep.Close(t)
return nil, err
}
// Create a connection from which the kernel can write messages.
connection, err := ep.(transport.BoundEndpoint).UnidirectionalConnect(t)
if err != nil {
- ep.Close()
+ ep.Close(t)
return nil, err
}
diff --git a/pkg/sentry/socket/netstack/netstack.go b/pkg/sentry/socket/netstack/netstack.go
index 31a168f7e..e4846bc0b 100644
--- a/pkg/sentry/socket/netstack/netstack.go
+++ b/pkg/sentry/socket/netstack/netstack.go
@@ -330,7 +330,7 @@ func New(t *kernel.Task, family int, skType linux.SockType, protocol int, queue
}
dirent := socket.NewDirent(t, netstackDevice)
- defer dirent.DecRef()
+ defer dirent.DecRef(t)
return fs.NewFile(t, dirent, fs.FileFlags{Read: true, Write: true, NonSeekable: true}, &SocketOperations{
socketOpsCommon: socketOpsCommon{
Queue: queue,
@@ -479,7 +479,7 @@ func (s *socketOpsCommon) fetchReadView() *syserr.Error {
}
// Release implements fs.FileOperations.Release.
-func (s *socketOpsCommon) Release() {
+func (s *socketOpsCommon) Release(context.Context) {
s.Endpoint.Close()
}
@@ -854,7 +854,7 @@ func (s *SocketOperations) Accept(t *kernel.Task, peerRequested bool, flags int,
if err != nil {
return 0, nil, 0, err
}
- defer ns.DecRef()
+ defer ns.DecRef(t)
if flags&linux.SOCK_NONBLOCK != 0 {
flags := ns.Flags()
diff --git a/pkg/sentry/socket/netstack/netstack_vfs2.go b/pkg/sentry/socket/netstack/netstack_vfs2.go
index a9025b0ec..3335e7430 100644
--- a/pkg/sentry/socket/netstack/netstack_vfs2.go
+++ b/pkg/sentry/socket/netstack/netstack_vfs2.go
@@ -169,7 +169,7 @@ func (s *SocketVFS2) Accept(t *kernel.Task, peerRequested bool, flags int, block
if err != nil {
return 0, nil, 0, err
}
- defer ns.DecRef()
+ defer ns.DecRef(t)
if err := ns.SetStatusFlags(t, t.Credentials(), uint32(flags&linux.SOCK_NONBLOCK)); err != nil {
return 0, nil, 0, syserr.FromError(err)
diff --git a/pkg/sentry/socket/socket.go b/pkg/sentry/socket/socket.go
index d112757fb..04b259d27 100644
--- a/pkg/sentry/socket/socket.go
+++ b/pkg/sentry/socket/socket.go
@@ -46,8 +46,8 @@ type ControlMessages struct {
}
// Release releases Unix domain socket credentials and rights.
-func (c *ControlMessages) Release() {
- c.Unix.Release()
+func (c *ControlMessages) Release(ctx context.Context) {
+ c.Unix.Release(ctx)
}
// Socket is an interface combining fs.FileOperations and SocketOps,
diff --git a/pkg/sentry/socket/unix/transport/connectioned.go b/pkg/sentry/socket/unix/transport/connectioned.go
index a1e49cc57..c67b602f0 100644
--- a/pkg/sentry/socket/unix/transport/connectioned.go
+++ b/pkg/sentry/socket/unix/transport/connectioned.go
@@ -211,7 +211,7 @@ func (e *connectionedEndpoint) Listening() bool {
// The socket will be a fresh state after a call to close and may be reused.
// That is, close may be used to "unbind" or "disconnect" the socket in error
// paths.
-func (e *connectionedEndpoint) Close() {
+func (e *connectionedEndpoint) Close(ctx context.Context) {
e.Lock()
var c ConnectedEndpoint
var r Receiver
@@ -233,7 +233,7 @@ func (e *connectionedEndpoint) Close() {
case e.Listening():
close(e.acceptedChan)
for n := range e.acceptedChan {
- n.Close()
+ n.Close(ctx)
}
e.acceptedChan = nil
e.path = ""
@@ -241,11 +241,11 @@ func (e *connectionedEndpoint) Close() {
e.Unlock()
if c != nil {
c.CloseNotify()
- c.Release()
+ c.Release(ctx)
}
if r != nil {
r.CloseNotify()
- r.Release()
+ r.Release(ctx)
}
}
@@ -340,7 +340,7 @@ func (e *connectionedEndpoint) BidirectionalConnect(ctx context.Context, ce Conn
return nil
default:
// Busy; return ECONNREFUSED per spec.
- ne.Close()
+ ne.Close(ctx)
e.Unlock()
ce.Unlock()
return syserr.ErrConnectionRefused
diff --git a/pkg/sentry/socket/unix/transport/connectionless.go b/pkg/sentry/socket/unix/transport/connectionless.go
index 4b06d63ac..70ee8f9b8 100644
--- a/pkg/sentry/socket/unix/transport/connectionless.go
+++ b/pkg/sentry/socket/unix/transport/connectionless.go
@@ -54,10 +54,10 @@ func (e *connectionlessEndpoint) isBound() bool {
// Close puts the endpoint in a closed state and frees all resources associated
// with it.
-func (e *connectionlessEndpoint) Close() {
+func (e *connectionlessEndpoint) Close(ctx context.Context) {
e.Lock()
if e.connected != nil {
- e.connected.Release()
+ e.connected.Release(ctx)
e.connected = nil
}
@@ -71,7 +71,7 @@ func (e *connectionlessEndpoint) Close() {
e.Unlock()
r.CloseNotify()
- r.Release()
+ r.Release(ctx)
}
// BidirectionalConnect implements BoundEndpoint.BidirectionalConnect.
@@ -108,10 +108,10 @@ func (e *connectionlessEndpoint) SendMsg(ctx context.Context, data [][]byte, c C
if err != nil {
return 0, syserr.ErrInvalidEndpointState
}
- defer connected.Release()
+ defer connected.Release(ctx)
e.Lock()
- n, notify, err := connected.Send(data, c, tcpip.FullAddress{Addr: tcpip.Address(e.path)})
+ n, notify, err := connected.Send(ctx, data, c, tcpip.FullAddress{Addr: tcpip.Address(e.path)})
e.Unlock()
if notify {
@@ -135,7 +135,7 @@ func (e *connectionlessEndpoint) Connect(ctx context.Context, server BoundEndpoi
e.Lock()
if e.connected != nil {
- e.connected.Release()
+ e.connected.Release(ctx)
}
e.connected = connected
e.Unlock()
diff --git a/pkg/sentry/socket/unix/transport/queue.go b/pkg/sentry/socket/unix/transport/queue.go
index d8f3ad63d..ef6043e19 100644
--- a/pkg/sentry/socket/unix/transport/queue.go
+++ b/pkg/sentry/socket/unix/transport/queue.go
@@ -15,6 +15,7 @@
package transport
import (
+ "gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/refs"
"gvisor.dev/gvisor/pkg/sync"
"gvisor.dev/gvisor/pkg/syserr"
@@ -57,10 +58,10 @@ func (q *queue) Close() {
// Both the read and write queues must be notified after resetting:
// q.ReaderQueue.Notify(waiter.EventIn)
// q.WriterQueue.Notify(waiter.EventOut)
-func (q *queue) Reset() {
+func (q *queue) Reset(ctx context.Context) {
q.mu.Lock()
for cur := q.dataList.Front(); cur != nil; cur = cur.Next() {
- cur.Release()
+ cur.Release(ctx)
}
q.dataList.Reset()
q.used = 0
@@ -68,8 +69,8 @@ func (q *queue) Reset() {
}
// DecRef implements RefCounter.DecRef with destructor q.Reset.
-func (q *queue) DecRef() {
- q.DecRefWithDestructor(q.Reset)
+func (q *queue) DecRef(ctx context.Context) {
+ q.DecRefWithDestructor(ctx, q.Reset)
// We don't need to notify after resetting because no one cares about
// this queue after all references have been dropped.
}
@@ -111,7 +112,7 @@ func (q *queue) IsWritable() bool {
//
// If notify is true, ReaderQueue.Notify must be called:
// q.ReaderQueue.Notify(waiter.EventIn)
-func (q *queue) Enqueue(data [][]byte, c ControlMessages, from tcpip.FullAddress, discardEmpty bool, truncate bool) (l int64, notify bool, err *syserr.Error) {
+func (q *queue) Enqueue(ctx context.Context, data [][]byte, c ControlMessages, from tcpip.FullAddress, discardEmpty bool, truncate bool) (l int64, notify bool, err *syserr.Error) {
q.mu.Lock()
if q.closed {
@@ -124,7 +125,7 @@ func (q *queue) Enqueue(data [][]byte, c ControlMessages, from tcpip.FullAddress
}
if discardEmpty && l == 0 {
q.mu.Unlock()
- c.Release()
+ c.Release(ctx)
return 0, false, nil
}
diff --git a/pkg/sentry/socket/unix/transport/unix.go b/pkg/sentry/socket/unix/transport/unix.go
index 2f1b127df..475d7177e 100644
--- a/pkg/sentry/socket/unix/transport/unix.go
+++ b/pkg/sentry/socket/unix/transport/unix.go
@@ -37,7 +37,7 @@ type RightsControlMessage interface {
Clone() RightsControlMessage
// Release releases any resources owned by the RightsControlMessage.
- Release()
+ Release(ctx context.Context)
}
// A CredentialsControlMessage is a control message containing Unix credentials.
@@ -74,9 +74,9 @@ func (c *ControlMessages) Clone() ControlMessages {
}
// Release releases both the credentials and the rights.
-func (c *ControlMessages) Release() {
+func (c *ControlMessages) Release(ctx context.Context) {
if c.Rights != nil {
- c.Rights.Release()
+ c.Rights.Release(ctx)
}
*c = ControlMessages{}
}
@@ -90,7 +90,7 @@ type Endpoint interface {
// Close puts the endpoint in a closed state and frees all resources
// associated with it.
- Close()
+ Close(ctx context.Context)
// RecvMsg reads data and a control message from the endpoint. This method
// does not block if there is no data pending.
@@ -252,7 +252,7 @@ type BoundEndpoint interface {
// Release releases any resources held by the BoundEndpoint. It must be
// called before dropping all references to a BoundEndpoint returned by a
// function.
- Release()
+ Release(ctx context.Context)
}
// message represents a message passed over a Unix domain socket.
@@ -281,8 +281,8 @@ func (m *message) Length() int64 {
}
// Release releases any resources held by the message.
-func (m *message) Release() {
- m.Control.Release()
+func (m *message) Release(ctx context.Context) {
+ m.Control.Release(ctx)
}
// Peek returns a copy of the message.
@@ -304,7 +304,7 @@ type Receiver interface {
// See Endpoint.RecvMsg for documentation on shared arguments.
//
// notify indicates if RecvNotify should be called.
- Recv(data [][]byte, creds bool, numRights int, peek bool) (recvLen, msgLen int64, cm ControlMessages, CMTruncated bool, source tcpip.FullAddress, notify bool, err *syserr.Error)
+ Recv(ctx context.Context, data [][]byte, creds bool, numRights int, peek bool) (recvLen, msgLen int64, cm ControlMessages, CMTruncated bool, source tcpip.FullAddress, notify bool, err *syserr.Error)
// RecvNotify notifies the Receiver of a successful Recv. This must not be
// called while holding any endpoint locks.
@@ -333,7 +333,7 @@ type Receiver interface {
// Release releases any resources owned by the Receiver. It should be
// called before droping all references to a Receiver.
- Release()
+ Release(ctx context.Context)
}
// queueReceiver implements Receiver for datagram sockets.
@@ -344,7 +344,7 @@ type queueReceiver struct {
}
// Recv implements Receiver.Recv.
-func (q *queueReceiver) Recv(data [][]byte, creds bool, numRights int, peek bool) (int64, int64, ControlMessages, bool, tcpip.FullAddress, bool, *syserr.Error) {
+func (q *queueReceiver) Recv(ctx context.Context, data [][]byte, creds bool, numRights int, peek bool) (int64, int64, ControlMessages, bool, tcpip.FullAddress, bool, *syserr.Error) {
var m *message
var notify bool
var err *syserr.Error
@@ -398,8 +398,8 @@ func (q *queueReceiver) RecvMaxQueueSize() int64 {
}
// Release implements Receiver.Release.
-func (q *queueReceiver) Release() {
- q.readQueue.DecRef()
+func (q *queueReceiver) Release(ctx context.Context) {
+ q.readQueue.DecRef(ctx)
}
// streamQueueReceiver implements Receiver for stream sockets.
@@ -456,7 +456,7 @@ func (q *streamQueueReceiver) RecvMaxQueueSize() int64 {
}
// Recv implements Receiver.Recv.
-func (q *streamQueueReceiver) Recv(data [][]byte, wantCreds bool, numRights int, peek bool) (int64, int64, ControlMessages, bool, tcpip.FullAddress, bool, *syserr.Error) {
+func (q *streamQueueReceiver) Recv(ctx context.Context, data [][]byte, wantCreds bool, numRights int, peek bool) (int64, int64, ControlMessages, bool, tcpip.FullAddress, bool, *syserr.Error) {
q.mu.Lock()
defer q.mu.Unlock()
@@ -502,7 +502,7 @@ func (q *streamQueueReceiver) Recv(data [][]byte, wantCreds bool, numRights int,
var cmTruncated bool
if c.Rights != nil && numRights == 0 {
- c.Rights.Release()
+ c.Rights.Release(ctx)
c.Rights = nil
cmTruncated = true
}
@@ -557,7 +557,7 @@ func (q *streamQueueReceiver) Recv(data [][]byte, wantCreds bool, numRights int,
// Consume rights.
if numRights == 0 {
cmTruncated = true
- q.control.Rights.Release()
+ q.control.Rights.Release(ctx)
} else {
c.Rights = q.control.Rights
haveRights = true
@@ -582,7 +582,7 @@ type ConnectedEndpoint interface {
//
// syserr.ErrWouldBlock can be returned along with a partial write if
// the caller should block to send the rest of the data.
- Send(data [][]byte, c ControlMessages, from tcpip.FullAddress) (n int64, notify bool, err *syserr.Error)
+ Send(ctx context.Context, data [][]byte, c ControlMessages, from tcpip.FullAddress) (n int64, notify bool, err *syserr.Error)
// SendNotify notifies the ConnectedEndpoint of a successful Send. This
// must not be called while holding any endpoint locks.
@@ -616,7 +616,7 @@ type ConnectedEndpoint interface {
// Release releases any resources owned by the ConnectedEndpoint. It should
// be called before droping all references to a ConnectedEndpoint.
- Release()
+ Release(ctx context.Context)
// CloseUnread sets the fact that this end is closed with unread data to
// the peer socket.
@@ -654,7 +654,7 @@ func (e *connectedEndpoint) GetLocalAddress() (tcpip.FullAddress, *tcpip.Error)
}
// Send implements ConnectedEndpoint.Send.
-func (e *connectedEndpoint) Send(data [][]byte, c ControlMessages, from tcpip.FullAddress) (int64, bool, *syserr.Error) {
+func (e *connectedEndpoint) Send(ctx context.Context, data [][]byte, c ControlMessages, from tcpip.FullAddress) (int64, bool, *syserr.Error) {
discardEmpty := false
truncate := false
if e.endpoint.Type() == linux.SOCK_STREAM {
@@ -669,7 +669,7 @@ func (e *connectedEndpoint) Send(data [][]byte, c ControlMessages, from tcpip.Fu
truncate = true
}
- return e.writeQueue.Enqueue(data, c, from, discardEmpty, truncate)
+ return e.writeQueue.Enqueue(ctx, data, c, from, discardEmpty, truncate)
}
// SendNotify implements ConnectedEndpoint.SendNotify.
@@ -707,8 +707,8 @@ func (e *connectedEndpoint) SendMaxQueueSize() int64 {
}
// Release implements ConnectedEndpoint.Release.
-func (e *connectedEndpoint) Release() {
- e.writeQueue.DecRef()
+func (e *connectedEndpoint) Release(ctx context.Context) {
+ e.writeQueue.DecRef(ctx)
}
// CloseUnread implements ConnectedEndpoint.CloseUnread.
@@ -798,7 +798,7 @@ func (e *baseEndpoint) RecvMsg(ctx context.Context, data [][]byte, creds bool, n
return 0, 0, ControlMessages{}, false, syserr.ErrNotConnected
}
- recvLen, msgLen, cms, cmt, a, notify, err := e.receiver.Recv(data, creds, numRights, peek)
+ recvLen, msgLen, cms, cmt, a, notify, err := e.receiver.Recv(ctx, data, creds, numRights, peek)
e.Unlock()
if err != nil {
return 0, 0, ControlMessages{}, false, err
@@ -827,7 +827,7 @@ func (e *baseEndpoint) SendMsg(ctx context.Context, data [][]byte, c ControlMess
return 0, syserr.ErrAlreadyConnected
}
- n, notify, err := e.connected.Send(data, c, tcpip.FullAddress{Addr: tcpip.Address(e.path)})
+ n, notify, err := e.connected.Send(ctx, data, c, tcpip.FullAddress{Addr: tcpip.Address(e.path)})
e.Unlock()
if notify {
@@ -1001,6 +1001,6 @@ func (e *baseEndpoint) GetRemoteAddress() (tcpip.FullAddress, *tcpip.Error) {
}
// Release implements BoundEndpoint.Release.
-func (*baseEndpoint) Release() {
+func (*baseEndpoint) Release(context.Context) {
// Binding a baseEndpoint doesn't take a reference.
}
diff --git a/pkg/sentry/socket/unix/unix.go b/pkg/sentry/socket/unix/unix.go
index 0482d33cf..2b8454edb 100644
--- a/pkg/sentry/socket/unix/unix.go
+++ b/pkg/sentry/socket/unix/unix.go
@@ -62,7 +62,7 @@ type SocketOperations struct {
// New creates a new unix socket.
func New(ctx context.Context, endpoint transport.Endpoint, stype linux.SockType) *fs.File {
dirent := socket.NewDirent(ctx, unixSocketDevice)
- defer dirent.DecRef()
+ defer dirent.DecRef(ctx)
return NewWithDirent(ctx, dirent, endpoint, stype, fs.FileFlags{Read: true, Write: true, NonSeekable: true})
}
@@ -97,17 +97,17 @@ type socketOpsCommon struct {
}
// DecRef implements RefCounter.DecRef.
-func (s *socketOpsCommon) DecRef() {
- s.DecRefWithDestructor(func() {
- s.ep.Close()
+func (s *socketOpsCommon) DecRef(ctx context.Context) {
+ s.DecRefWithDestructor(ctx, func(context.Context) {
+ s.ep.Close(ctx)
})
}
// Release implemements fs.FileOperations.Release.
-func (s *socketOpsCommon) Release() {
+func (s *socketOpsCommon) Release(ctx context.Context) {
// Release only decrements a reference on s because s may be referenced in
// the abstract socket namespace.
- s.DecRef()
+ s.DecRef(ctx)
}
func (s *socketOpsCommon) isPacket() bool {
@@ -234,7 +234,7 @@ func (s *SocketOperations) Accept(t *kernel.Task, peerRequested bool, flags int,
}
ns := New(t, ep, s.stype)
- defer ns.DecRef()
+ defer ns.DecRef(t)
if flags&linux.SOCK_NONBLOCK != 0 {
flags := ns.Flags()
@@ -284,7 +284,7 @@ func (s *SocketOperations) Bind(t *kernel.Task, sockaddr []byte) *syserr.Error {
if t.IsNetworkNamespaced() {
return syserr.ErrInvalidEndpointState
}
- if err := t.AbstractSockets().Bind(p[1:], bep, s); err != nil {
+ if err := t.AbstractSockets().Bind(t, p[1:], bep, s); err != nil {
// syserr.ErrPortInUse corresponds to EADDRINUSE.
return syserr.ErrPortInUse
}
@@ -294,7 +294,7 @@ func (s *SocketOperations) Bind(t *kernel.Task, sockaddr []byte) *syserr.Error {
var name string
cwd := t.FSContext().WorkingDirectory()
- defer cwd.DecRef()
+ defer cwd.DecRef(t)
// Is there no slash at all?
if !strings.Contains(p, "/") {
@@ -302,7 +302,7 @@ func (s *SocketOperations) Bind(t *kernel.Task, sockaddr []byte) *syserr.Error {
name = p
} else {
root := t.FSContext().RootDirectory()
- defer root.DecRef()
+ defer root.DecRef(t)
// Find the last path component, we know that something follows
// that final slash, otherwise extractPath() would have failed.
lastSlash := strings.LastIndex(p, "/")
@@ -318,7 +318,7 @@ func (s *SocketOperations) Bind(t *kernel.Task, sockaddr []byte) *syserr.Error {
// No path available.
return syserr.ErrNoSuchFile
}
- defer d.DecRef()
+ defer d.DecRef(t)
name = p[lastSlash+1:]
}
@@ -332,7 +332,7 @@ func (s *SocketOperations) Bind(t *kernel.Task, sockaddr []byte) *syserr.Error {
if err != nil {
return syserr.ErrPortInUse
}
- childDir.DecRef()
+ childDir.DecRef(t)
}
return nil
@@ -378,9 +378,9 @@ func extractEndpoint(t *kernel.Task, sockaddr []byte) (transport.BoundEndpoint,
FollowFinalSymlink: true,
}
ep, e := t.Kernel().VFS().BoundEndpointAt(t, t.Credentials(), &pop, &vfs.BoundEndpointOptions{path})
- root.DecRef()
+ root.DecRef(t)
if relPath {
- start.DecRef()
+ start.DecRef(t)
}
if e != nil {
return nil, syserr.FromError(e)
@@ -393,15 +393,15 @@ func extractEndpoint(t *kernel.Task, sockaddr []byte) (transport.BoundEndpoint,
cwd := t.FSContext().WorkingDirectory()
remainingTraversals := uint(fs.DefaultTraversalLimit)
d, e := t.MountNamespace().FindInode(t, root, cwd, path, &remainingTraversals)
- cwd.DecRef()
- root.DecRef()
+ cwd.DecRef(t)
+ root.DecRef(t)
if e != nil {
return nil, syserr.FromError(e)
}
// Extract the endpoint if one is there.
ep := d.Inode.BoundEndpoint(path)
- d.DecRef()
+ d.DecRef(t)
if ep == nil {
// No socket!
return nil, syserr.ErrConnectionRefused
@@ -415,7 +415,7 @@ func (s *socketOpsCommon) Connect(t *kernel.Task, sockaddr []byte, blocking bool
if err != nil {
return err
}
- defer ep.Release()
+ defer ep.Release(t)
// Connect the server endpoint.
err = s.ep.Connect(t, ep)
@@ -473,7 +473,7 @@ func (s *socketOpsCommon) SendMsg(t *kernel.Task, src usermem.IOSequence, to []b
if err != nil {
return 0, err
}
- defer ep.Release()
+ defer ep.Release(t)
w.To = ep
if ep.Passcred() && w.Control.Credentials == nil {
diff --git a/pkg/sentry/socket/unix/unix_vfs2.go b/pkg/sentry/socket/unix/unix_vfs2.go
index 05c16fcfe..dfa25241a 100644
--- a/pkg/sentry/socket/unix/unix_vfs2.go
+++ b/pkg/sentry/socket/unix/unix_vfs2.go
@@ -136,7 +136,7 @@ func (s *SocketVFS2) Accept(t *kernel.Task, peerRequested bool, flags int, block
if err != nil {
return 0, nil, 0, err
}
- defer ns.DecRef()
+ defer ns.DecRef(t)
if flags&linux.SOCK_NONBLOCK != 0 {
ns.SetStatusFlags(t, t.Credentials(), linux.SOCK_NONBLOCK)
@@ -183,19 +183,19 @@ func (s *SocketVFS2) Bind(t *kernel.Task, sockaddr []byte) *syserr.Error {
if t.IsNetworkNamespaced() {
return syserr.ErrInvalidEndpointState
}
- if err := t.AbstractSockets().Bind(p[1:], bep, s); err != nil {
+ if err := t.AbstractSockets().Bind(t, p[1:], bep, s); err != nil {
// syserr.ErrPortInUse corresponds to EADDRINUSE.
return syserr.ErrPortInUse
}
} else {
path := fspath.Parse(p)
root := t.FSContext().RootDirectoryVFS2()
- defer root.DecRef()
+ defer root.DecRef(t)
start := root
relPath := !path.Absolute
if relPath {
start = t.FSContext().WorkingDirectoryVFS2()
- defer start.DecRef()
+ defer start.DecRef(t)
}
pop := vfs.PathOperation{
Root: root,
@@ -333,7 +333,7 @@ func (*providerVFS2) Socket(t *kernel.Task, stype linux.SockType, protocol int)
f, err := NewSockfsFile(t, ep, stype)
if err != nil {
- ep.Close()
+ ep.Close(t)
return nil, err
}
return f, nil
@@ -357,14 +357,14 @@ func (*providerVFS2) Pair(t *kernel.Task, stype linux.SockType, protocol int) (*
ep1, ep2 := transport.NewPair(t, stype, t.Kernel())
s1, err := NewSockfsFile(t, ep1, stype)
if err != nil {
- ep1.Close()
- ep2.Close()
+ ep1.Close(t)
+ ep2.Close(t)
return nil, nil, err
}
s2, err := NewSockfsFile(t, ep2, stype)
if err != nil {
- s1.DecRef()
- ep2.Close()
+ s1.DecRef(t)
+ ep2.Close(t)
return nil, nil, err
}
diff --git a/pkg/sentry/strace/strace.go b/pkg/sentry/strace/strace.go
index 68ca537c8..87b239730 100644
--- a/pkg/sentry/strace/strace.go
+++ b/pkg/sentry/strace/strace.go
@@ -147,14 +147,14 @@ func fd(t *kernel.Task, fd int32) string {
root := t.FSContext().RootDirectory()
if root != nil {
- defer root.DecRef()
+ defer root.DecRef(t)
}
if fd == linux.AT_FDCWD {
wd := t.FSContext().WorkingDirectory()
var name string
if wd != nil {
- defer wd.DecRef()
+ defer wd.DecRef(t)
name, _ = wd.FullName(root)
} else {
name = "(unknown cwd)"
@@ -167,7 +167,7 @@ func fd(t *kernel.Task, fd int32) string {
// Cast FD to uint64 to avoid printing negative hex.
return fmt.Sprintf("%#x (bad FD)", uint64(fd))
}
- defer file.DecRef()
+ defer file.DecRef(t)
name, _ := file.Dirent.FullName(root)
return fmt.Sprintf("%#x %s", fd, name)
@@ -175,12 +175,12 @@ func fd(t *kernel.Task, fd int32) string {
func fdVFS2(t *kernel.Task, fd int32) string {
root := t.FSContext().RootDirectoryVFS2()
- defer root.DecRef()
+ defer root.DecRef(t)
vfsObj := root.Mount().Filesystem().VirtualFilesystem()
if fd == linux.AT_FDCWD {
wd := t.FSContext().WorkingDirectoryVFS2()
- defer wd.DecRef()
+ defer wd.DecRef(t)
name, _ := vfsObj.PathnameWithDeleted(t, root, wd)
return fmt.Sprintf("AT_FDCWD %s", name)
@@ -191,7 +191,7 @@ func fdVFS2(t *kernel.Task, fd int32) string {
// Cast FD to uint64 to avoid printing negative hex.
return fmt.Sprintf("%#x (bad FD)", uint64(fd))
}
- defer file.DecRef()
+ defer file.DecRef(t)
name, _ := vfsObj.PathnameWithDeleted(t, root, file.VirtualDentry())
return fmt.Sprintf("%#x %s", fd, name)
diff --git a/pkg/sentry/syscalls/epoll.go b/pkg/sentry/syscalls/epoll.go
index d9fb808c0..d23a0068a 100644
--- a/pkg/sentry/syscalls/epoll.go
+++ b/pkg/sentry/syscalls/epoll.go
@@ -28,7 +28,7 @@ import (
// CreateEpoll implements the epoll_create(2) linux syscall.
func CreateEpoll(t *kernel.Task, closeOnExec bool) (int32, error) {
file := epoll.NewEventPoll(t)
- defer file.DecRef()
+ defer file.DecRef(t)
fd, err := t.NewFDFrom(0, file, kernel.FDFlags{
CloseOnExec: closeOnExec,
@@ -47,14 +47,14 @@ func AddEpoll(t *kernel.Task, epfd int32, fd int32, flags epoll.EntryFlags, mask
if epollfile == nil {
return syserror.EBADF
}
- defer epollfile.DecRef()
+ defer epollfile.DecRef(t)
// Get the target file id.
file := t.GetFile(fd)
if file == nil {
return syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the epollPoll operations.
e, ok := epollfile.FileOperations.(*epoll.EventPoll)
@@ -73,14 +73,14 @@ func UpdateEpoll(t *kernel.Task, epfd int32, fd int32, flags epoll.EntryFlags, m
if epollfile == nil {
return syserror.EBADF
}
- defer epollfile.DecRef()
+ defer epollfile.DecRef(t)
// Get the target file id.
file := t.GetFile(fd)
if file == nil {
return syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the epollPoll operations.
e, ok := epollfile.FileOperations.(*epoll.EventPoll)
@@ -99,14 +99,14 @@ func RemoveEpoll(t *kernel.Task, epfd int32, fd int32) error {
if epollfile == nil {
return syserror.EBADF
}
- defer epollfile.DecRef()
+ defer epollfile.DecRef(t)
// Get the target file id.
file := t.GetFile(fd)
if file == nil {
return syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the epollPoll operations.
e, ok := epollfile.FileOperations.(*epoll.EventPoll)
@@ -115,7 +115,7 @@ func RemoveEpoll(t *kernel.Task, epfd int32, fd int32) error {
}
// Try to remove the entry.
- return e.RemoveEntry(epoll.FileIdentifier{file, fd})
+ return e.RemoveEntry(t, epoll.FileIdentifier{file, fd})
}
// WaitEpoll implements the epoll_wait(2) linux syscall.
@@ -125,7 +125,7 @@ func WaitEpoll(t *kernel.Task, fd int32, max int, timeout int) ([]linux.EpollEve
if epollfile == nil {
return nil, syserror.EBADF
}
- defer epollfile.DecRef()
+ defer epollfile.DecRef(t)
// Extract the epollPoll operations.
e, ok := epollfile.FileOperations.(*epoll.EventPoll)
diff --git a/pkg/sentry/syscalls/linux/sys_aio.go b/pkg/sentry/syscalls/linux/sys_aio.go
index ba2557c52..e9d64dec5 100644
--- a/pkg/sentry/syscalls/linux/sys_aio.go
+++ b/pkg/sentry/syscalls/linux/sys_aio.go
@@ -247,7 +247,7 @@ func getAIOCallback(t *kernel.Task, file *fs.File, cbAddr usermem.Addr, cb *linu
ev.Result = -int64(kernel.ExtractErrno(err, 0))
}
- file.DecRef()
+ file.DecRef(ctx)
// Queue the result for delivery.
actx.FinishRequest(ev)
@@ -257,7 +257,7 @@ func getAIOCallback(t *kernel.Task, file *fs.File, cbAddr usermem.Addr, cb *linu
// wake up.
if eventFile != nil {
eventFile.FileOperations.(*eventfd.EventOperations).Signal(1)
- eventFile.DecRef()
+ eventFile.DecRef(ctx)
}
}
}
@@ -269,7 +269,7 @@ func submitCallback(t *kernel.Task, id uint64, cb *linux.IOCallback, cbAddr user
// File not found.
return syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Was there an eventFD? Extract it.
var eventFile *fs.File
@@ -279,7 +279,7 @@ func submitCallback(t *kernel.Task, id uint64, cb *linux.IOCallback, cbAddr user
// Bad FD.
return syserror.EBADF
}
- defer eventFile.DecRef()
+ defer eventFile.DecRef(t)
// Check that it is an eventfd.
if _, ok := eventFile.FileOperations.(*eventfd.EventOperations); !ok {
diff --git a/pkg/sentry/syscalls/linux/sys_eventfd.go b/pkg/sentry/syscalls/linux/sys_eventfd.go
index ed3413ca6..3b4f879e4 100644
--- a/pkg/sentry/syscalls/linux/sys_eventfd.go
+++ b/pkg/sentry/syscalls/linux/sys_eventfd.go
@@ -37,7 +37,7 @@ func Eventfd2(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc
event.SetFlags(fs.SettableFileFlags{
NonBlocking: flags&linux.EFD_NONBLOCK != 0,
})
- defer event.DecRef()
+ defer event.DecRef(t)
fd, err := t.NewFDFrom(0, event, kernel.FDFlags{
CloseOnExec: flags&linux.EFD_CLOEXEC != 0,
diff --git a/pkg/sentry/syscalls/linux/sys_file.go b/pkg/sentry/syscalls/linux/sys_file.go
index 8cf6401e7..1bc9b184e 100644
--- a/pkg/sentry/syscalls/linux/sys_file.go
+++ b/pkg/sentry/syscalls/linux/sys_file.go
@@ -40,7 +40,7 @@ func fileOpAt(t *kernel.Task, dirFD int32, path string, fn func(root *fs.Dirent,
// Common case: we are accessing a file in the root.
root := t.FSContext().RootDirectory()
err := fn(root, root, name, linux.MaxSymlinkTraversals)
- root.DecRef()
+ root.DecRef(t)
return err
} else if dir == "." && dirFD == linux.AT_FDCWD {
// Common case: we are accessing a file relative to the current
@@ -48,8 +48,8 @@ func fileOpAt(t *kernel.Task, dirFD int32, path string, fn func(root *fs.Dirent,
wd := t.FSContext().WorkingDirectory()
root := t.FSContext().RootDirectory()
err := fn(root, wd, name, linux.MaxSymlinkTraversals)
- wd.DecRef()
- root.DecRef()
+ wd.DecRef(t)
+ root.DecRef(t)
return err
}
@@ -97,19 +97,19 @@ func fileOpOn(t *kernel.Task, dirFD int32, path string, resolve bool, fn func(ro
} else {
d, err = t.MountNamespace().FindLink(t, root, rel, path, &remainingTraversals)
}
- root.DecRef()
+ root.DecRef(t)
if wd != nil {
- wd.DecRef()
+ wd.DecRef(t)
}
if f != nil {
- f.DecRef()
+ f.DecRef(t)
}
if err != nil {
return err
}
err = fn(root, d, remainingTraversals)
- d.DecRef()
+ d.DecRef(t)
return err
}
@@ -186,7 +186,7 @@ func openAt(t *kernel.Task, dirFD int32, addr usermem.Addr, flags uint) (fd uint
if err != nil {
return syserror.ConvertIntr(err, kernel.ERESTARTSYS)
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Success.
newFD, err := t.NewFDFrom(0, file, kernel.FDFlags{
@@ -242,7 +242,7 @@ func mknodAt(t *kernel.Task, dirFD int32, addr usermem.Addr, mode linux.FileMode
if err != nil {
return err
}
- file.DecRef()
+ file.DecRef(t)
return nil
case linux.ModeNamedPipe:
@@ -332,7 +332,7 @@ func createAt(t *kernel.Task, dirFD int32, addr usermem.Addr, flags uint, mode l
if err != nil {
break
}
- defer found.DecRef()
+ defer found.DecRef(t)
// We found something (possibly a symlink). If the
// O_EXCL flag was passed, then we can immediately
@@ -357,7 +357,7 @@ func createAt(t *kernel.Task, dirFD int32, addr usermem.Addr, flags uint, mode l
resolved, err = found.Inode.Getlink(t)
if err == nil {
// No more resolution necessary.
- defer resolved.DecRef()
+ defer resolved.DecRef(t)
break
}
if err != fs.ErrResolveViaReadlink {
@@ -384,7 +384,7 @@ func createAt(t *kernel.Task, dirFD int32, addr usermem.Addr, flags uint, mode l
if err != nil {
break
}
- defer newParent.DecRef()
+ defer newParent.DecRef(t)
// Repeat the process with the parent and name of the
// symlink target.
@@ -416,7 +416,7 @@ func createAt(t *kernel.Task, dirFD int32, addr usermem.Addr, flags uint, mode l
if err != nil {
return syserror.ConvertIntr(err, kernel.ERESTARTSYS)
}
- defer newFile.DecRef()
+ defer newFile.DecRef(t)
case syserror.ENOENT:
// File does not exist. Proceed with creation.
@@ -432,7 +432,7 @@ func createAt(t *kernel.Task, dirFD int32, addr usermem.Addr, flags uint, mode l
// No luck, bail.
return err
}
- defer newFile.DecRef()
+ defer newFile.DecRef(t)
found = newFile.Dirent
default:
return err
@@ -596,7 +596,7 @@ func Ioctl(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Shared flags between file and socket.
switch request {
@@ -671,9 +671,9 @@ func Getcwd(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
addr := args[0].Pointer()
size := args[1].SizeT()
cwd := t.FSContext().WorkingDirectory()
- defer cwd.DecRef()
+ defer cwd.DecRef(t)
root := t.FSContext().RootDirectory()
- defer root.DecRef()
+ defer root.DecRef(t)
// Get our fullname from the root and preprend unreachable if the root was
// unreachable from our current dirent this is the same behavior as on linux.
@@ -722,7 +722,7 @@ func Chroot(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
return err
}
- t.FSContext().SetRootDirectory(d)
+ t.FSContext().SetRootDirectory(t, d)
return nil
})
}
@@ -747,7 +747,7 @@ func Chdir(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
return err
}
- t.FSContext().SetWorkingDirectory(d)
+ t.FSContext().SetWorkingDirectory(t, d)
return nil
})
}
@@ -760,7 +760,7 @@ func Fchdir(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Is it a directory?
if !fs.IsDir(file.Dirent.Inode.StableAttr) {
@@ -772,7 +772,7 @@ func Fchdir(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
return 0, nil, err
}
- t.FSContext().SetWorkingDirectory(file.Dirent)
+ t.FSContext().SetWorkingDirectory(t, file.Dirent)
return 0, nil, nil
}
@@ -791,7 +791,7 @@ func Close(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
err := file.Flush(t)
return 0, nil, handleIOError(t, false /* partial */, err, syserror.EINTR, "close", file)
@@ -805,7 +805,7 @@ func Dup(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.SyscallCo
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
newFD, err := t.NewFDFrom(0, file, kernel.FDFlags{})
if err != nil {
@@ -826,7 +826,7 @@ func Dup2(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.SyscallC
if oldFile == nil {
return 0, nil, syserror.EBADF
}
- defer oldFile.DecRef()
+ defer oldFile.DecRef(t)
return uintptr(newfd), nil, nil
}
@@ -850,7 +850,7 @@ func Dup3(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.SyscallC
if oldFile == nil {
return 0, nil, syserror.EBADF
}
- defer oldFile.DecRef()
+ defer oldFile.DecRef(t)
err := t.NewFDAt(newfd, oldFile, kernel.FDFlags{CloseOnExec: flags&linux.O_CLOEXEC != 0})
if err != nil {
@@ -925,7 +925,7 @@ func Fcntl(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
switch cmd {
case linux.F_DUPFD, linux.F_DUPFD_CLOEXEC:
@@ -1132,7 +1132,7 @@ func Fadvise64(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sys
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// If the FD refers to a pipe or FIFO, return error.
if fs.IsPipe(file.Dirent.Inode.StableAttr) {
@@ -1171,7 +1171,7 @@ func mkdirAt(t *kernel.Task, dirFD int32, addr usermem.Addr, mode linux.FileMode
switch err {
case nil:
// The directory existed.
- defer f.DecRef()
+ defer f.DecRef(t)
return syserror.EEXIST
case syserror.EACCES:
// Permission denied while walking to the directory.
@@ -1349,7 +1349,7 @@ func linkAt(t *kernel.Task, oldDirFD int32, oldAddr usermem.Addr, newDirFD int32
if target == nil {
return syserror.EBADF
}
- defer target.DecRef()
+ defer target.DecRef(t)
if err := mayLinkAt(t, target.Dirent.Inode); err != nil {
return err
}
@@ -1602,7 +1602,7 @@ func Ftruncate(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sys
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Reject truncation if the file flags do not permit this operation.
// This is different from truncate(2) above.
@@ -1730,7 +1730,7 @@ func chownAt(t *kernel.Task, fd int32, addr usermem.Addr, resolve, allowEmpty bo
if file == nil {
return syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
return chown(t, file.Dirent, uid, gid)
}
@@ -1768,7 +1768,7 @@ func Fchown(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
return 0, nil, chown(t, file.Dirent, uid, gid)
}
@@ -1833,7 +1833,7 @@ func Fchmod(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
return 0, nil, chmod(t, file.Dirent, mode)
}
@@ -1893,10 +1893,10 @@ func utimes(t *kernel.Task, dirFD int32, addr usermem.Addr, ts fs.TimeSpec, reso
if f == nil {
return syserror.EBADF
}
- defer f.DecRef()
+ defer f.DecRef(t)
root := t.FSContext().RootDirectory()
- defer root.DecRef()
+ defer root.DecRef(t)
return setTimestamp(root, f.Dirent, linux.MaxSymlinkTraversals)
}
@@ -2088,7 +2088,7 @@ func Fallocate(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sys
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
if offset < 0 || length <= 0 {
return 0, nil, syserror.EINVAL
@@ -2141,7 +2141,7 @@ func Flock(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
// flock(2): EBADF fd is not an open file descriptor.
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
nonblocking := operation&linux.LOCK_NB != 0
operation &^= linux.LOCK_NB
@@ -2224,8 +2224,8 @@ func MemfdCreate(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.S
return 0, nil, err
}
- defer dirent.DecRef()
- defer file.DecRef()
+ defer dirent.DecRef(t)
+ defer file.DecRef(t)
newFD, err := t.NewFDFrom(0, file, kernel.FDFlags{
CloseOnExec: cloExec,
diff --git a/pkg/sentry/syscalls/linux/sys_futex.go b/pkg/sentry/syscalls/linux/sys_futex.go
index f04d78856..9d1b2edb1 100644
--- a/pkg/sentry/syscalls/linux/sys_futex.go
+++ b/pkg/sentry/syscalls/linux/sys_futex.go
@@ -73,7 +73,7 @@ func futexWaitAbsolute(t *kernel.Task, clockRealtime bool, ts linux.Timespec, fo
err = t.BlockWithDeadline(w.C, true, ktime.FromTimespec(ts))
}
- t.Futex().WaitComplete(w)
+ t.Futex().WaitComplete(w, t)
return 0, syserror.ConvertIntr(err, kernel.ERESTARTSYS)
}
@@ -95,7 +95,7 @@ func futexWaitDuration(t *kernel.Task, duration time.Duration, forever bool, add
}
remaining, err := t.BlockWithTimeout(w.C, !forever, duration)
- t.Futex().WaitComplete(w)
+ t.Futex().WaitComplete(w, t)
if err == nil {
return 0, nil
}
@@ -148,7 +148,7 @@ func futexLockPI(t *kernel.Task, ts linux.Timespec, forever bool, addr usermem.A
timer.Destroy()
}
- t.Futex().WaitComplete(w)
+ t.Futex().WaitComplete(w, t)
return syserror.ConvertIntr(err, kernel.ERESTARTSYS)
}
diff --git a/pkg/sentry/syscalls/linux/sys_getdents.go b/pkg/sentry/syscalls/linux/sys_getdents.go
index b126fecc0..f5699e55d 100644
--- a/pkg/sentry/syscalls/linux/sys_getdents.go
+++ b/pkg/sentry/syscalls/linux/sys_getdents.go
@@ -68,7 +68,7 @@ func getdents(t *kernel.Task, fd int32, addr usermem.Addr, size int, f func(*dir
if dir == nil {
return 0, syserror.EBADF
}
- defer dir.DecRef()
+ defer dir.DecRef(t)
w := &usermem.IOReadWriter{
Ctx: t,
diff --git a/pkg/sentry/syscalls/linux/sys_inotify.go b/pkg/sentry/syscalls/linux/sys_inotify.go
index b2c7b3444..cf47bb9dd 100644
--- a/pkg/sentry/syscalls/linux/sys_inotify.go
+++ b/pkg/sentry/syscalls/linux/sys_inotify.go
@@ -40,7 +40,7 @@ func InotifyInit1(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.
NonBlocking: flags&linux.IN_NONBLOCK != 0,
}
n := fs.NewFile(t, dirent, fileFlags, fs.NewInotify(t))
- defer n.DecRef()
+ defer n.DecRef(t)
fd, err := t.NewFDFrom(0, n, kernel.FDFlags{
CloseOnExec: flags&linux.IN_CLOEXEC != 0,
@@ -71,7 +71,7 @@ func fdToInotify(t *kernel.Task, fd int32) (*fs.Inotify, *fs.File, error) {
ino, ok := file.FileOperations.(*fs.Inotify)
if !ok {
// Not an inotify fd.
- file.DecRef()
+ file.DecRef(t)
return nil, nil, syserror.EINVAL
}
@@ -98,7 +98,7 @@ func InotifyAddWatch(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kern
if err != nil {
return 0, nil, err
}
- defer file.DecRef()
+ defer file.DecRef(t)
path, _, err := copyInPath(t, addr, false /* allowEmpty */)
if err != nil {
@@ -128,6 +128,6 @@ func InotifyRmWatch(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kerne
if err != nil {
return 0, nil, err
}
- defer file.DecRef()
- return 0, nil, ino.RmWatch(wd)
+ defer file.DecRef(t)
+ return 0, nil, ino.RmWatch(t, wd)
}
diff --git a/pkg/sentry/syscalls/linux/sys_lseek.go b/pkg/sentry/syscalls/linux/sys_lseek.go
index 3f7691eae..1c38f8f4f 100644
--- a/pkg/sentry/syscalls/linux/sys_lseek.go
+++ b/pkg/sentry/syscalls/linux/sys_lseek.go
@@ -33,7 +33,7 @@ func Lseek(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
var sw fs.SeekWhence
switch whence {
diff --git a/pkg/sentry/syscalls/linux/sys_mmap.go b/pkg/sentry/syscalls/linux/sys_mmap.go
index 91694d374..72786b032 100644
--- a/pkg/sentry/syscalls/linux/sys_mmap.go
+++ b/pkg/sentry/syscalls/linux/sys_mmap.go
@@ -75,7 +75,7 @@ func Mmap(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.SyscallC
}
defer func() {
if opts.MappingIdentity != nil {
- opts.MappingIdentity.DecRef()
+ opts.MappingIdentity.DecRef(t)
}
}()
@@ -85,7 +85,7 @@ func Mmap(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.SyscallC
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
flags := file.Flags()
// mmap unconditionally requires that the FD is readable.
diff --git a/pkg/sentry/syscalls/linux/sys_mount.go b/pkg/sentry/syscalls/linux/sys_mount.go
index eb5ff48f5..bd0633564 100644
--- a/pkg/sentry/syscalls/linux/sys_mount.go
+++ b/pkg/sentry/syscalls/linux/sys_mount.go
@@ -115,7 +115,7 @@ func Mount(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
}); err != nil {
// Something went wrong. Drop our ref on rootInode before
// returning the error.
- rootInode.DecRef()
+ rootInode.DecRef(t)
return 0, nil, err
}
diff --git a/pkg/sentry/syscalls/linux/sys_pipe.go b/pkg/sentry/syscalls/linux/sys_pipe.go
index 43c510930..3149e4aad 100644
--- a/pkg/sentry/syscalls/linux/sys_pipe.go
+++ b/pkg/sentry/syscalls/linux/sys_pipe.go
@@ -34,10 +34,10 @@ func pipe2(t *kernel.Task, addr usermem.Addr, flags uint) (uintptr, error) {
r, w := pipe.NewConnectedPipe(t, pipe.DefaultPipeSize, usermem.PageSize)
r.SetFlags(linuxToFlags(flags).Settable())
- defer r.DecRef()
+ defer r.DecRef(t)
w.SetFlags(linuxToFlags(flags).Settable())
- defer w.DecRef()
+ defer w.DecRef(t)
fds, err := t.NewFDs(0, []*fs.File{r, w}, kernel.FDFlags{
CloseOnExec: flags&linux.O_CLOEXEC != 0,
@@ -49,7 +49,7 @@ func pipe2(t *kernel.Task, addr usermem.Addr, flags uint) (uintptr, error) {
if _, err := t.CopyOut(addr, fds); err != nil {
for _, fd := range fds {
if file, _ := t.FDTable().Remove(fd); file != nil {
- file.DecRef()
+ file.DecRef(t)
}
}
return 0, err
diff --git a/pkg/sentry/syscalls/linux/sys_poll.go b/pkg/sentry/syscalls/linux/sys_poll.go
index f0198141c..3435bdf77 100644
--- a/pkg/sentry/syscalls/linux/sys_poll.go
+++ b/pkg/sentry/syscalls/linux/sys_poll.go
@@ -70,7 +70,7 @@ func initReadiness(t *kernel.Task, pfd *linux.PollFD, state *pollState, ch chan
}
if ch == nil {
- defer file.DecRef()
+ defer file.DecRef(t)
} else {
state.file = file
state.waiter, _ = waiter.NewChannelEntry(ch)
@@ -82,11 +82,11 @@ func initReadiness(t *kernel.Task, pfd *linux.PollFD, state *pollState, ch chan
}
// releaseState releases all the pollState in "state".
-func releaseState(state []pollState) {
+func releaseState(t *kernel.Task, state []pollState) {
for i := range state {
if state[i].file != nil {
state[i].file.EventUnregister(&state[i].waiter)
- state[i].file.DecRef()
+ state[i].file.DecRef(t)
}
}
}
@@ -107,7 +107,7 @@ func pollBlock(t *kernel.Task, pfd []linux.PollFD, timeout time.Duration) (time.
// result, we stop registering for events but still go through all files
// to get their ready masks.
state := make([]pollState, len(pfd))
- defer releaseState(state)
+ defer releaseState(t, state)
n := uintptr(0)
for i := range pfd {
initReadiness(t, &pfd[i], &state[i], ch)
@@ -266,7 +266,7 @@ func doSelect(t *kernel.Task, nfds int, readFDs, writeFDs, exceptFDs usermem.Add
if file == nil {
return 0, syserror.EBADF
}
- file.DecRef()
+ file.DecRef(t)
var mask int16
if (rV & m) != 0 {
diff --git a/pkg/sentry/syscalls/linux/sys_prctl.go b/pkg/sentry/syscalls/linux/sys_prctl.go
index f92bf8096..64a725296 100644
--- a/pkg/sentry/syscalls/linux/sys_prctl.go
+++ b/pkg/sentry/syscalls/linux/sys_prctl.go
@@ -128,7 +128,7 @@ func Prctl(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// They trying to set exe to a non-file?
if !fs.IsFile(file.Dirent.Inode.StableAttr) {
@@ -136,7 +136,7 @@ func Prctl(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
}
// Set the underlying executable.
- t.MemoryManager().SetExecutable(fsbridge.NewFSFile(file))
+ t.MemoryManager().SetExecutable(t, fsbridge.NewFSFile(file))
case linux.PR_SET_MM_AUXV,
linux.PR_SET_MM_START_CODE,
diff --git a/pkg/sentry/syscalls/linux/sys_read.go b/pkg/sentry/syscalls/linux/sys_read.go
index 071b4bacc..3bbc3fa4b 100644
--- a/pkg/sentry/syscalls/linux/sys_read.go
+++ b/pkg/sentry/syscalls/linux/sys_read.go
@@ -48,7 +48,7 @@ func Read(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.SyscallC
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Check that the file is readable.
if !file.Flags().Read {
@@ -84,7 +84,7 @@ func Readahead(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sys
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Check that the file is readable.
if !file.Flags().Read {
@@ -118,7 +118,7 @@ func Pread64(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysca
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Check that the offset is legitimate and does not overflow.
if offset < 0 || offset+int64(size) < 0 {
@@ -164,7 +164,7 @@ func Readv(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Check that the file is readable.
if !file.Flags().Read {
@@ -195,7 +195,7 @@ func Preadv(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Check that the offset is legitimate.
if offset < 0 {
@@ -244,7 +244,7 @@ func Preadv2(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysca
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Check that the offset is legitimate.
if offset < -1 {
diff --git a/pkg/sentry/syscalls/linux/sys_shm.go b/pkg/sentry/syscalls/linux/sys_shm.go
index 4a8bc24a2..f0ae8fa8e 100644
--- a/pkg/sentry/syscalls/linux/sys_shm.go
+++ b/pkg/sentry/syscalls/linux/sys_shm.go
@@ -39,7 +39,7 @@ func Shmget(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if err != nil {
return 0, nil, err
}
- defer segment.DecRef()
+ defer segment.DecRef(t)
return uintptr(segment.ID), nil, nil
}
@@ -66,7 +66,7 @@ func Shmat(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if err != nil {
return 0, nil, syserror.EINVAL
}
- defer segment.DecRef()
+ defer segment.DecRef(t)
opts, err := segment.ConfigureAttach(t, addr, shm.AttachOpts{
Execute: flag&linux.SHM_EXEC == linux.SHM_EXEC,
@@ -108,7 +108,7 @@ func Shmctl(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if err != nil {
return 0, nil, syserror.EINVAL
}
- defer segment.DecRef()
+ defer segment.DecRef(t)
stat, err := segment.IPCStat(t)
if err == nil {
@@ -132,7 +132,7 @@ func Shmctl(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if err != nil {
return 0, nil, syserror.EINVAL
}
- defer segment.DecRef()
+ defer segment.DecRef(t)
switch cmd {
case linux.IPC_SET:
@@ -145,7 +145,7 @@ func Shmctl(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
return 0, nil, err
case linux.IPC_RMID:
- segment.MarkDestroyed()
+ segment.MarkDestroyed(t)
return 0, nil, nil
case linux.SHM_LOCK, linux.SHM_UNLOCK:
diff --git a/pkg/sentry/syscalls/linux/sys_signal.go b/pkg/sentry/syscalls/linux/sys_signal.go
index d2b0012ae..20cb1a5cb 100644
--- a/pkg/sentry/syscalls/linux/sys_signal.go
+++ b/pkg/sentry/syscalls/linux/sys_signal.go
@@ -536,7 +536,7 @@ func sharedSignalfd(t *kernel.Task, fd int32, sigset usermem.Addr, sigsetsize ui
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Is this a signalfd?
if s, ok := file.FileOperations.(*signalfd.SignalOperations); ok {
@@ -553,7 +553,7 @@ func sharedSignalfd(t *kernel.Task, fd int32, sigset usermem.Addr, sigsetsize ui
if err != nil {
return 0, nil, err
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Set appropriate flags.
file.SetFlags(fs.SettableFileFlags{
diff --git a/pkg/sentry/syscalls/linux/sys_socket.go b/pkg/sentry/syscalls/linux/sys_socket.go
index 414fce8e3..fec1c1974 100644
--- a/pkg/sentry/syscalls/linux/sys_socket.go
+++ b/pkg/sentry/syscalls/linux/sys_socket.go
@@ -200,7 +200,7 @@ func Socket(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
s.SetFlags(fs.SettableFileFlags{
NonBlocking: stype&linux.SOCK_NONBLOCK != 0,
})
- defer s.DecRef()
+ defer s.DecRef(t)
fd, err := t.NewFDFrom(0, s, kernel.FDFlags{
CloseOnExec: stype&linux.SOCK_CLOEXEC != 0,
@@ -235,8 +235,8 @@ func SocketPair(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sy
}
s1.SetFlags(fileFlags)
s2.SetFlags(fileFlags)
- defer s1.DecRef()
- defer s2.DecRef()
+ defer s1.DecRef(t)
+ defer s2.DecRef(t)
// Create the FDs for the sockets.
fds, err := t.NewFDs(0, []*fs.File{s1, s2}, kernel.FDFlags{
@@ -250,7 +250,7 @@ func SocketPair(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sy
if _, err := t.CopyOut(socks, fds); err != nil {
for _, fd := range fds {
if file, _ := t.FDTable().Remove(fd); file != nil {
- file.DecRef()
+ file.DecRef(t)
}
}
return 0, nil, err
@@ -270,7 +270,7 @@ func Connect(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysca
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.FileOperations.(socket.Socket)
@@ -301,7 +301,7 @@ func accept(t *kernel.Task, fd int32, addr usermem.Addr, addrLen usermem.Addr, f
if file == nil {
return 0, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.FileOperations.(socket.Socket)
@@ -360,7 +360,7 @@ func Bind(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.SyscallC
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.FileOperations.(socket.Socket)
@@ -387,7 +387,7 @@ func Listen(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.FileOperations.(socket.Socket)
@@ -416,7 +416,7 @@ func Shutdown(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.FileOperations.(socket.Socket)
@@ -447,7 +447,7 @@ func GetSockOpt(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sy
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.FileOperations.(socket.Socket)
@@ -529,7 +529,7 @@ func SetSockOpt(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sy
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.FileOperations.(socket.Socket)
@@ -567,7 +567,7 @@ func GetSockName(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.S
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.FileOperations.(socket.Socket)
@@ -595,7 +595,7 @@ func GetPeerName(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.S
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.FileOperations.(socket.Socket)
@@ -628,7 +628,7 @@ func RecvMsg(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysca
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.FileOperations.(socket.Socket)
@@ -681,7 +681,7 @@ func RecvMMsg(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.FileOperations.(socket.Socket)
@@ -775,7 +775,7 @@ func recvSingleMsg(t *kernel.Task, s socket.Socket, msgPtr usermem.Addr, flags i
}
if !cms.Unix.Empty() {
mflags |= linux.MSG_CTRUNC
- cms.Release()
+ cms.Release(t)
}
if int(msg.Flags) != mflags {
@@ -795,7 +795,7 @@ func recvSingleMsg(t *kernel.Task, s socket.Socket, msgPtr usermem.Addr, flags i
if e != nil {
return 0, syserror.ConvertIntr(e.ToError(), kernel.ERESTARTSYS)
}
- defer cms.Release()
+ defer cms.Release(t)
controlData := make([]byte, 0, msg.ControlLen)
controlData = control.PackControlMessages(t, cms, controlData)
@@ -851,7 +851,7 @@ func recvFrom(t *kernel.Task, fd int32, bufPtr usermem.Addr, bufLen uint64, flag
if file == nil {
return 0, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.FileOperations.(socket.Socket)
@@ -880,7 +880,7 @@ func recvFrom(t *kernel.Task, fd int32, bufPtr usermem.Addr, bufLen uint64, flag
}
n, _, sender, senderLen, cm, e := s.RecvMsg(t, dst, int(flags), haveDeadline, deadline, nameLenPtr != 0, 0)
- cm.Release()
+ cm.Release(t)
if e != nil {
return 0, syserror.ConvertIntr(e.ToError(), kernel.ERESTARTSYS)
}
@@ -924,7 +924,7 @@ func SendMsg(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysca
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.FileOperations.(socket.Socket)
@@ -962,7 +962,7 @@ func SendMMsg(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.FileOperations.(socket.Socket)
@@ -1066,7 +1066,7 @@ func sendSingleMsg(t *kernel.Task, s socket.Socket, file *fs.File, msgPtr userme
n, e := s.SendMsg(t, src, to, int(flags), haveDeadline, deadline, controlMessages)
err = handleIOError(t, n != 0, e.ToError(), kernel.ERESTARTSYS, "sendmsg", file)
if err != nil {
- controlMessages.Release()
+ controlMessages.Release(t)
}
return uintptr(n), err
}
@@ -1084,7 +1084,7 @@ func sendTo(t *kernel.Task, fd int32, bufPtr usermem.Addr, bufLen uint64, flags
if file == nil {
return 0, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.FileOperations.(socket.Socket)
diff --git a/pkg/sentry/syscalls/linux/sys_splice.go b/pkg/sentry/syscalls/linux/sys_splice.go
index 77c78889d..b8846a10a 100644
--- a/pkg/sentry/syscalls/linux/sys_splice.go
+++ b/pkg/sentry/syscalls/linux/sys_splice.go
@@ -101,7 +101,7 @@ func Sendfile(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc
if inFile == nil {
return 0, nil, syserror.EBADF
}
- defer inFile.DecRef()
+ defer inFile.DecRef(t)
if !inFile.Flags().Read {
return 0, nil, syserror.EBADF
@@ -111,7 +111,7 @@ func Sendfile(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc
if outFile == nil {
return 0, nil, syserror.EBADF
}
- defer outFile.DecRef()
+ defer outFile.DecRef(t)
if !outFile.Flags().Write {
return 0, nil, syserror.EBADF
@@ -192,13 +192,13 @@ func Splice(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if outFile == nil {
return 0, nil, syserror.EBADF
}
- defer outFile.DecRef()
+ defer outFile.DecRef(t)
inFile := t.GetFile(inFD)
if inFile == nil {
return 0, nil, syserror.EBADF
}
- defer inFile.DecRef()
+ defer inFile.DecRef(t)
// The operation is non-blocking if anything is non-blocking.
//
@@ -300,13 +300,13 @@ func Tee(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.SyscallCo
if outFile == nil {
return 0, nil, syserror.EBADF
}
- defer outFile.DecRef()
+ defer outFile.DecRef(t)
inFile := t.GetFile(inFD)
if inFile == nil {
return 0, nil, syserror.EBADF
}
- defer inFile.DecRef()
+ defer inFile.DecRef(t)
// All files must be pipes.
if !fs.IsPipe(inFile.Dirent.Inode.StableAttr) || !fs.IsPipe(outFile.Dirent.Inode.StableAttr) {
diff --git a/pkg/sentry/syscalls/linux/sys_stat.go b/pkg/sentry/syscalls/linux/sys_stat.go
index 46ebf27a2..a5826f2dd 100644
--- a/pkg/sentry/syscalls/linux/sys_stat.go
+++ b/pkg/sentry/syscalls/linux/sys_stat.go
@@ -58,7 +58,7 @@ func Fstatat(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysca
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
return 0, nil, fstat(t, file, statAddr)
}
@@ -100,7 +100,7 @@ func Fstat(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
return 0, nil, fstat(t, file, statAddr)
}
@@ -158,7 +158,7 @@ func Statx(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
uattr, err := file.UnstableAttr(t)
if err != nil {
return 0, nil, err
@@ -249,7 +249,7 @@ func Fstatfs(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysca
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
return 0, nil, statfsImpl(t, file.Dirent, statfsAddr)
}
diff --git a/pkg/sentry/syscalls/linux/sys_sync.go b/pkg/sentry/syscalls/linux/sys_sync.go
index 5ad465ae3..f2c0e5069 100644
--- a/pkg/sentry/syscalls/linux/sys_sync.go
+++ b/pkg/sentry/syscalls/linux/sys_sync.go
@@ -39,7 +39,7 @@ func Syncfs(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Use "sync-the-world" for now, it's guaranteed that fd is at least
// on the root filesystem.
@@ -54,7 +54,7 @@ func Fsync(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
err := file.Fsync(t, 0, fs.FileMaxOffset, fs.SyncAll)
return 0, nil, syserror.ConvertIntr(err, kernel.ERESTARTSYS)
@@ -70,7 +70,7 @@ func Fdatasync(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sys
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
err := file.Fsync(t, 0, fs.FileMaxOffset, fs.SyncData)
return 0, nil, syserror.ConvertIntr(err, kernel.ERESTARTSYS)
@@ -103,7 +103,7 @@ func SyncFileRange(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// SYNC_FILE_RANGE_WAIT_BEFORE waits upon write-out of all pages in the
// specified range that have already been submitted to the device
diff --git a/pkg/sentry/syscalls/linux/sys_thread.go b/pkg/sentry/syscalls/linux/sys_thread.go
index 00915fdde..2d16e4933 100644
--- a/pkg/sentry/syscalls/linux/sys_thread.go
+++ b/pkg/sentry/syscalls/linux/sys_thread.go
@@ -117,7 +117,7 @@ func execveat(t *kernel.Task, dirFD int32, pathnameAddr, argvAddr, envvAddr user
resolveFinal := flags&linux.AT_SYMLINK_NOFOLLOW == 0
root := t.FSContext().RootDirectory()
- defer root.DecRef()
+ defer root.DecRef(t)
var wd *fs.Dirent
var executable fsbridge.File
@@ -133,7 +133,7 @@ func execveat(t *kernel.Task, dirFD int32, pathnameAddr, argvAddr, envvAddr user
if f == nil {
return 0, nil, syserror.EBADF
}
- defer f.DecRef()
+ defer f.DecRef(t)
closeOnExec = fdFlags.CloseOnExec
if atEmptyPath && len(pathname) == 0 {
@@ -155,7 +155,7 @@ func execveat(t *kernel.Task, dirFD int32, pathnameAddr, argvAddr, envvAddr user
}
}
if wd != nil {
- defer wd.DecRef()
+ defer wd.DecRef(t)
}
// Load the new TaskContext.
diff --git a/pkg/sentry/syscalls/linux/sys_timerfd.go b/pkg/sentry/syscalls/linux/sys_timerfd.go
index cf49b43db..34b03e4ee 100644
--- a/pkg/sentry/syscalls/linux/sys_timerfd.go
+++ b/pkg/sentry/syscalls/linux/sys_timerfd.go
@@ -43,7 +43,7 @@ func TimerfdCreate(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel
return 0, nil, syserror.EINVAL
}
f := timerfd.NewFile(t, c)
- defer f.DecRef()
+ defer f.DecRef(t)
f.SetFlags(fs.SettableFileFlags{
NonBlocking: flags&linux.TFD_NONBLOCK != 0,
})
@@ -73,7 +73,7 @@ func TimerfdSettime(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kerne
if f == nil {
return 0, nil, syserror.EBADF
}
- defer f.DecRef()
+ defer f.DecRef(t)
tf, ok := f.FileOperations.(*timerfd.TimerOperations)
if !ok {
@@ -107,7 +107,7 @@ func TimerfdGettime(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kerne
if f == nil {
return 0, nil, syserror.EBADF
}
- defer f.DecRef()
+ defer f.DecRef(t)
tf, ok := f.FileOperations.(*timerfd.TimerOperations)
if !ok {
diff --git a/pkg/sentry/syscalls/linux/sys_write.go b/pkg/sentry/syscalls/linux/sys_write.go
index 6ec0de96e..485526e28 100644
--- a/pkg/sentry/syscalls/linux/sys_write.go
+++ b/pkg/sentry/syscalls/linux/sys_write.go
@@ -48,7 +48,7 @@ func Write(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Check that the file is writable.
if !file.Flags().Write {
@@ -85,7 +85,7 @@ func Pwrite64(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Check that the offset is legitimate and does not overflow.
if offset < 0 || offset+int64(size) < 0 {
@@ -131,7 +131,7 @@ func Writev(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Check that the file is writable.
if !file.Flags().Write {
@@ -162,7 +162,7 @@ func Pwritev(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysca
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Check that the offset is legitimate.
if offset < 0 {
@@ -215,7 +215,7 @@ func Pwritev2(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Check that the offset is legitimate.
if offset < -1 {
diff --git a/pkg/sentry/syscalls/linux/sys_xattr.go b/pkg/sentry/syscalls/linux/sys_xattr.go
index c24946160..97474fd3c 100644
--- a/pkg/sentry/syscalls/linux/sys_xattr.go
+++ b/pkg/sentry/syscalls/linux/sys_xattr.go
@@ -49,7 +49,7 @@ func FGetXattr(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sys
if f == nil {
return 0, nil, syserror.EBADF
}
- defer f.DecRef()
+ defer f.DecRef(t)
n, err := getXattr(t, f.Dirent, nameAddr, valueAddr, size)
if err != nil {
@@ -153,7 +153,7 @@ func FSetXattr(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sys
if f == nil {
return 0, nil, syserror.EBADF
}
- defer f.DecRef()
+ defer f.DecRef(t)
return 0, nil, setXattr(t, f.Dirent, nameAddr, valueAddr, uint64(size), flags)
}
@@ -270,7 +270,7 @@ func FListXattr(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sy
if f == nil {
return 0, nil, syserror.EBADF
}
- defer f.DecRef()
+ defer f.DecRef(t)
n, err := listXattr(t, f.Dirent, listAddr, size)
if err != nil {
@@ -384,7 +384,7 @@ func FRemoveXattr(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.
if f == nil {
return 0, nil, syserror.EBADF
}
- defer f.DecRef()
+ defer f.DecRef(t)
return 0, nil, removeXattr(t, f.Dirent, nameAddr)
}
diff --git a/pkg/sentry/syscalls/linux/vfs2/aio.go b/pkg/sentry/syscalls/linux/vfs2/aio.go
index e5cdefc50..399b4f60c 100644
--- a/pkg/sentry/syscalls/linux/vfs2/aio.go
+++ b/pkg/sentry/syscalls/linux/vfs2/aio.go
@@ -88,7 +88,7 @@ func submitCallback(t *kernel.Task, id uint64, cb *linux.IOCallback, cbAddr user
if fd == nil {
return syserror.EBADF
}
- defer fd.DecRef()
+ defer fd.DecRef(t)
// Was there an eventFD? Extract it.
var eventFD *vfs.FileDescription
@@ -97,7 +97,7 @@ func submitCallback(t *kernel.Task, id uint64, cb *linux.IOCallback, cbAddr user
if eventFD == nil {
return syserror.EBADF
}
- defer eventFD.DecRef()
+ defer eventFD.DecRef(t)
// Check that it is an eventfd.
if _, ok := eventFD.Impl().(*eventfd.EventFileDescription); !ok {
@@ -169,7 +169,7 @@ func getAIOCallback(t *kernel.Task, fd, eventFD *vfs.FileDescription, cbAddr use
ev.Result = -int64(kernel.ExtractErrno(err, 0))
}
- fd.DecRef()
+ fd.DecRef(ctx)
// Queue the result for delivery.
aioCtx.FinishRequest(ev)
@@ -179,7 +179,7 @@ func getAIOCallback(t *kernel.Task, fd, eventFD *vfs.FileDescription, cbAddr use
// wake up.
if eventFD != nil {
eventFD.Impl().(*eventfd.EventFileDescription).Signal(1)
- eventFD.DecRef()
+ eventFD.DecRef(ctx)
}
}
}
diff --git a/pkg/sentry/syscalls/linux/vfs2/epoll.go b/pkg/sentry/syscalls/linux/vfs2/epoll.go
index 34c90ae3e..c62f03509 100644
--- a/pkg/sentry/syscalls/linux/vfs2/epoll.go
+++ b/pkg/sentry/syscalls/linux/vfs2/epoll.go
@@ -37,11 +37,11 @@ func EpollCreate1(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.
return 0, nil, syserror.EINVAL
}
- file, err := t.Kernel().VFS().NewEpollInstanceFD()
+ file, err := t.Kernel().VFS().NewEpollInstanceFD(t)
if err != nil {
return 0, nil, err
}
- defer file.DecRef()
+ defer file.DecRef(t)
fd, err := t.NewFDFromVFS2(0, file, kernel.FDFlags{
CloseOnExec: flags&linux.EPOLL_CLOEXEC != 0,
@@ -62,11 +62,11 @@ func EpollCreate(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.S
return 0, nil, syserror.EINVAL
}
- file, err := t.Kernel().VFS().NewEpollInstanceFD()
+ file, err := t.Kernel().VFS().NewEpollInstanceFD(t)
if err != nil {
return 0, nil, err
}
- defer file.DecRef()
+ defer file.DecRef(t)
fd, err := t.NewFDFromVFS2(0, file, kernel.FDFlags{})
if err != nil {
@@ -86,7 +86,7 @@ func EpollCtl(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc
if epfile == nil {
return 0, nil, syserror.EBADF
}
- defer epfile.DecRef()
+ defer epfile.DecRef(t)
ep, ok := epfile.Impl().(*vfs.EpollInstance)
if !ok {
return 0, nil, syserror.EINVAL
@@ -95,7 +95,7 @@ func EpollCtl(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
if epfile == file {
return 0, nil, syserror.EINVAL
}
@@ -135,7 +135,7 @@ func EpollWait(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sys
if epfile == nil {
return 0, nil, syserror.EBADF
}
- defer epfile.DecRef()
+ defer epfile.DecRef(t)
ep, ok := epfile.Impl().(*vfs.EpollInstance)
if !ok {
return 0, nil, syserror.EINVAL
diff --git a/pkg/sentry/syscalls/linux/vfs2/eventfd.go b/pkg/sentry/syscalls/linux/vfs2/eventfd.go
index aff1a2070..807f909da 100644
--- a/pkg/sentry/syscalls/linux/vfs2/eventfd.go
+++ b/pkg/sentry/syscalls/linux/vfs2/eventfd.go
@@ -38,11 +38,11 @@ func Eventfd2(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc
fileFlags |= linux.O_NONBLOCK
}
semMode := flags&linux.EFD_SEMAPHORE != 0
- eventfd, err := eventfd.New(vfsObj, initVal, semMode, fileFlags)
+ eventfd, err := eventfd.New(t, vfsObj, initVal, semMode, fileFlags)
if err != nil {
return 0, nil, err
}
- defer eventfd.DecRef()
+ defer eventfd.DecRef(t)
fd, err := t.NewFDFromVFS2(0, eventfd, kernel.FDFlags{
CloseOnExec: flags&linux.EFD_CLOEXEC != 0,
diff --git a/pkg/sentry/syscalls/linux/vfs2/execve.go b/pkg/sentry/syscalls/linux/vfs2/execve.go
index aef0078a8..066ee0863 100644
--- a/pkg/sentry/syscalls/linux/vfs2/execve.go
+++ b/pkg/sentry/syscalls/linux/vfs2/execve.go
@@ -71,7 +71,7 @@ func execveat(t *kernel.Task, dirfd int32, pathnameAddr, argvAddr, envvAddr user
}
root := t.FSContext().RootDirectoryVFS2()
- defer root.DecRef()
+ defer root.DecRef(t)
var executable fsbridge.File
closeOnExec := false
if path := fspath.Parse(pathname); dirfd != linux.AT_FDCWD && !path.Absolute {
@@ -90,7 +90,7 @@ func execveat(t *kernel.Task, dirfd int32, pathnameAddr, argvAddr, envvAddr user
}
start := dirfile.VirtualDentry()
start.IncRef()
- dirfile.DecRef()
+ dirfile.DecRef(t)
closeOnExec = dirfileFlags.CloseOnExec
file, err := t.Kernel().VFS().OpenAt(t, t.Credentials(), &vfs.PathOperation{
Root: root,
@@ -101,19 +101,19 @@ func execveat(t *kernel.Task, dirfd int32, pathnameAddr, argvAddr, envvAddr user
Flags: linux.O_RDONLY,
FileExec: true,
})
- start.DecRef()
+ start.DecRef(t)
if err != nil {
return 0, nil, err
}
- defer file.DecRef()
+ defer file.DecRef(t)
executable = fsbridge.NewVFSFile(file)
}
// Load the new TaskContext.
mntns := t.MountNamespaceVFS2() // FIXME(jamieliu): useless refcount change
- defer mntns.DecRef()
+ defer mntns.DecRef(t)
wd := t.FSContext().WorkingDirectoryVFS2()
- defer wd.DecRef()
+ defer wd.DecRef(t)
remainingTraversals := uint(linux.MaxSymlinkTraversals)
loadArgs := loader.LoadArgs{
Opener: fsbridge.NewVFSLookup(mntns, root, wd),
diff --git a/pkg/sentry/syscalls/linux/vfs2/fd.go b/pkg/sentry/syscalls/linux/vfs2/fd.go
index 67f191551..72ca916a0 100644
--- a/pkg/sentry/syscalls/linux/vfs2/fd.go
+++ b/pkg/sentry/syscalls/linux/vfs2/fd.go
@@ -38,7 +38,7 @@ func Close(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
err := file.OnClose(t)
return 0, nil, slinux.HandleIOErrorVFS2(t, false /* partial */, err, syserror.EINTR, "close", file)
@@ -52,7 +52,7 @@ func Dup(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.SyscallCo
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
newFD, err := t.NewFDFromVFS2(0, file, kernel.FDFlags{})
if err != nil {
@@ -72,7 +72,7 @@ func Dup2(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.SyscallC
if file == nil {
return 0, nil, syserror.EBADF
}
- file.DecRef()
+ file.DecRef(t)
return uintptr(newfd), nil, nil
}
@@ -101,7 +101,7 @@ func dup3(t *kernel.Task, oldfd, newfd int32, flags uint32) (uintptr, *kernel.Sy
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
err := t.NewFDAtVFS2(newfd, file, kernel.FDFlags{
CloseOnExec: flags&linux.O_CLOEXEC != 0,
@@ -121,7 +121,7 @@ func Fcntl(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
switch cmd {
case linux.F_DUPFD, linux.F_DUPFD_CLOEXEC:
@@ -332,7 +332,7 @@ func Fadvise64(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sys
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// If the FD refers to a pipe or FIFO, return error.
if _, isPipe := file.Impl().(*pipe.VFSPipeFD); isPipe {
diff --git a/pkg/sentry/syscalls/linux/vfs2/filesystem.go b/pkg/sentry/syscalls/linux/vfs2/filesystem.go
index b6d2ddd65..01e0f9010 100644
--- a/pkg/sentry/syscalls/linux/vfs2/filesystem.go
+++ b/pkg/sentry/syscalls/linux/vfs2/filesystem.go
@@ -56,7 +56,7 @@ func linkat(t *kernel.Task, olddirfd int32, oldpathAddr usermem.Addr, newdirfd i
if err != nil {
return err
}
- defer oldtpop.Release()
+ defer oldtpop.Release(t)
newpath, err := copyInPath(t, newpathAddr)
if err != nil {
@@ -66,7 +66,7 @@ func linkat(t *kernel.Task, olddirfd int32, oldpathAddr usermem.Addr, newdirfd i
if err != nil {
return err
}
- defer newtpop.Release()
+ defer newtpop.Release(t)
return t.Kernel().VFS().LinkAt(t, t.Credentials(), &oldtpop.pop, &newtpop.pop)
}
@@ -95,7 +95,7 @@ func mkdirat(t *kernel.Task, dirfd int32, addr usermem.Addr, mode uint) error {
if err != nil {
return err
}
- defer tpop.Release()
+ defer tpop.Release(t)
return t.Kernel().VFS().MkdirAt(t, t.Credentials(), &tpop.pop, &vfs.MkdirOptions{
Mode: linux.FileMode(mode & (0777 | linux.S_ISVTX) &^ t.FSContext().Umask()),
})
@@ -127,7 +127,7 @@ func mknodat(t *kernel.Task, dirfd int32, addr usermem.Addr, mode linux.FileMode
if err != nil {
return err
}
- defer tpop.Release()
+ defer tpop.Release(t)
// "Zero file type is equivalent to type S_IFREG." - mknod(2)
if mode.FileType() == 0 {
@@ -174,7 +174,7 @@ func openat(t *kernel.Task, dirfd int32, pathAddr usermem.Addr, flags uint32, mo
if err != nil {
return 0, nil, err
}
- defer tpop.Release()
+ defer tpop.Release(t)
file, err := t.Kernel().VFS().OpenAt(t, t.Credentials(), &tpop.pop, &vfs.OpenOptions{
Flags: flags | linux.O_LARGEFILE,
@@ -183,7 +183,7 @@ func openat(t *kernel.Task, dirfd int32, pathAddr usermem.Addr, flags uint32, mo
if err != nil {
return 0, nil, err
}
- defer file.DecRef()
+ defer file.DecRef(t)
fd, err := t.NewFDFromVFS2(0, file, kernel.FDFlags{
CloseOnExec: flags&linux.O_CLOEXEC != 0,
@@ -227,7 +227,7 @@ func renameat(t *kernel.Task, olddirfd int32, oldpathAddr usermem.Addr, newdirfd
if err != nil {
return err
}
- defer oldtpop.Release()
+ defer oldtpop.Release(t)
newpath, err := copyInPath(t, newpathAddr)
if err != nil {
@@ -237,7 +237,7 @@ func renameat(t *kernel.Task, olddirfd int32, oldpathAddr usermem.Addr, newdirfd
if err != nil {
return err
}
- defer newtpop.Release()
+ defer newtpop.Release(t)
return t.Kernel().VFS().RenameAt(t, t.Credentials(), &oldtpop.pop, &newtpop.pop, &vfs.RenameOptions{
Flags: flags,
@@ -259,7 +259,7 @@ func rmdirat(t *kernel.Task, dirfd int32, pathAddr usermem.Addr) error {
if err != nil {
return err
}
- defer tpop.Release()
+ defer tpop.Release(t)
return t.Kernel().VFS().RmdirAt(t, t.Credentials(), &tpop.pop)
}
@@ -278,7 +278,7 @@ func unlinkat(t *kernel.Task, dirfd int32, pathAddr usermem.Addr) error {
if err != nil {
return err
}
- defer tpop.Release()
+ defer tpop.Release(t)
return t.Kernel().VFS().UnlinkAt(t, t.Credentials(), &tpop.pop)
}
@@ -329,6 +329,6 @@ func symlinkat(t *kernel.Task, targetAddr usermem.Addr, newdirfd int32, linkpath
if err != nil {
return err
}
- defer tpop.Release()
+ defer tpop.Release(t)
return t.Kernel().VFS().SymlinkAt(t, t.Credentials(), &tpop.pop, target)
}
diff --git a/pkg/sentry/syscalls/linux/vfs2/fscontext.go b/pkg/sentry/syscalls/linux/vfs2/fscontext.go
index 317409a18..a7d4d2a36 100644
--- a/pkg/sentry/syscalls/linux/vfs2/fscontext.go
+++ b/pkg/sentry/syscalls/linux/vfs2/fscontext.go
@@ -31,8 +31,8 @@ func Getcwd(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
root := t.FSContext().RootDirectoryVFS2()
wd := t.FSContext().WorkingDirectoryVFS2()
s, err := t.Kernel().VFS().PathnameForGetcwd(t, root, wd)
- root.DecRef()
- wd.DecRef()
+ root.DecRef(t)
+ wd.DecRef(t)
if err != nil {
return 0, nil, err
}
@@ -67,7 +67,7 @@ func Chdir(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if err != nil {
return 0, nil, err
}
- defer tpop.Release()
+ defer tpop.Release(t)
vd, err := t.Kernel().VFS().GetDentryAt(t, t.Credentials(), &tpop.pop, &vfs.GetDentryOptions{
CheckSearchable: true,
@@ -75,8 +75,8 @@ func Chdir(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if err != nil {
return 0, nil, err
}
- t.FSContext().SetWorkingDirectoryVFS2(vd)
- vd.DecRef()
+ t.FSContext().SetWorkingDirectoryVFS2(t, vd)
+ vd.DecRef(t)
return 0, nil, nil
}
@@ -88,7 +88,7 @@ func Fchdir(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if err != nil {
return 0, nil, err
}
- defer tpop.Release()
+ defer tpop.Release(t)
vd, err := t.Kernel().VFS().GetDentryAt(t, t.Credentials(), &tpop.pop, &vfs.GetDentryOptions{
CheckSearchable: true,
@@ -96,8 +96,8 @@ func Fchdir(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if err != nil {
return 0, nil, err
}
- t.FSContext().SetWorkingDirectoryVFS2(vd)
- vd.DecRef()
+ t.FSContext().SetWorkingDirectoryVFS2(t, vd)
+ vd.DecRef(t)
return 0, nil, nil
}
@@ -117,7 +117,7 @@ func Chroot(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if err != nil {
return 0, nil, err
}
- defer tpop.Release()
+ defer tpop.Release(t)
vd, err := t.Kernel().VFS().GetDentryAt(t, t.Credentials(), &tpop.pop, &vfs.GetDentryOptions{
CheckSearchable: true,
@@ -125,7 +125,7 @@ func Chroot(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if err != nil {
return 0, nil, err
}
- t.FSContext().SetRootDirectoryVFS2(vd)
- vd.DecRef()
+ t.FSContext().SetRootDirectoryVFS2(t, vd)
+ vd.DecRef(t)
return 0, nil, nil
}
diff --git a/pkg/sentry/syscalls/linux/vfs2/getdents.go b/pkg/sentry/syscalls/linux/vfs2/getdents.go
index c7c7bf7ce..5517595b5 100644
--- a/pkg/sentry/syscalls/linux/vfs2/getdents.go
+++ b/pkg/sentry/syscalls/linux/vfs2/getdents.go
@@ -44,7 +44,7 @@ func getdents(t *kernel.Task, args arch.SyscallArguments, isGetdents64 bool) (ui
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
cb := getGetdentsCallback(t, addr, size, isGetdents64)
err := file.IterDirents(t, cb)
diff --git a/pkg/sentry/syscalls/linux/vfs2/inotify.go b/pkg/sentry/syscalls/linux/vfs2/inotify.go
index 5d98134a5..11753d8e5 100644
--- a/pkg/sentry/syscalls/linux/vfs2/inotify.go
+++ b/pkg/sentry/syscalls/linux/vfs2/inotify.go
@@ -35,7 +35,7 @@ func InotifyInit1(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.
if err != nil {
return 0, nil, err
}
- defer ino.DecRef()
+ defer ino.DecRef(t)
fd, err := t.NewFDFromVFS2(0, ino, kernel.FDFlags{
CloseOnExec: flags&linux.IN_CLOEXEC != 0,
@@ -66,7 +66,7 @@ func fdToInotify(t *kernel.Task, fd int32) (*vfs.Inotify, *vfs.FileDescription,
ino, ok := f.Impl().(*vfs.Inotify)
if !ok {
// Not an inotify fd.
- f.DecRef()
+ f.DecRef(t)
return nil, nil, syserror.EINVAL
}
@@ -96,7 +96,7 @@ func InotifyAddWatch(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kern
if err != nil {
return 0, nil, err
}
- defer f.DecRef()
+ defer f.DecRef(t)
path, err := copyInPath(t, addr)
if err != nil {
@@ -109,12 +109,12 @@ func InotifyAddWatch(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kern
if err != nil {
return 0, nil, err
}
- defer tpop.Release()
+ defer tpop.Release(t)
d, err := t.Kernel().VFS().GetDentryAt(t, t.Credentials(), &tpop.pop, &vfs.GetDentryOptions{})
if err != nil {
return 0, nil, err
}
- defer d.DecRef()
+ defer d.DecRef(t)
fd, err = ino.AddWatch(d.Dentry(), mask)
if err != nil {
@@ -132,6 +132,6 @@ func InotifyRmWatch(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kerne
if err != nil {
return 0, nil, err
}
- defer f.DecRef()
- return 0, nil, ino.RmWatch(wd)
+ defer f.DecRef(t)
+ return 0, nil, ino.RmWatch(t, wd)
}
diff --git a/pkg/sentry/syscalls/linux/vfs2/ioctl.go b/pkg/sentry/syscalls/linux/vfs2/ioctl.go
index fd6ab94b2..38778a388 100644
--- a/pkg/sentry/syscalls/linux/vfs2/ioctl.go
+++ b/pkg/sentry/syscalls/linux/vfs2/ioctl.go
@@ -29,7 +29,7 @@ func Ioctl(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Handle ioctls that apply to all FDs.
switch args[1].Int() {
diff --git a/pkg/sentry/syscalls/linux/vfs2/lock.go b/pkg/sentry/syscalls/linux/vfs2/lock.go
index bf19028c4..b910b5a74 100644
--- a/pkg/sentry/syscalls/linux/vfs2/lock.go
+++ b/pkg/sentry/syscalls/linux/vfs2/lock.go
@@ -32,7 +32,7 @@ func Flock(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
// flock(2): EBADF fd is not an open file descriptor.
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
nonblocking := operation&linux.LOCK_NB != 0
operation &^= linux.LOCK_NB
diff --git a/pkg/sentry/syscalls/linux/vfs2/memfd.go b/pkg/sentry/syscalls/linux/vfs2/memfd.go
index bbe248d17..519583e4e 100644
--- a/pkg/sentry/syscalls/linux/vfs2/memfd.go
+++ b/pkg/sentry/syscalls/linux/vfs2/memfd.go
@@ -47,7 +47,7 @@ func MemfdCreate(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.S
}
shmMount := t.Kernel().ShmMount()
- file, err := tmpfs.NewMemfd(shmMount, t.Credentials(), allowSeals, memfdPrefix+name)
+ file, err := tmpfs.NewMemfd(t, t.Credentials(), shmMount, allowSeals, memfdPrefix+name)
if err != nil {
return 0, nil, err
}
diff --git a/pkg/sentry/syscalls/linux/vfs2/mmap.go b/pkg/sentry/syscalls/linux/vfs2/mmap.go
index 60a43f0a0..dc05c2994 100644
--- a/pkg/sentry/syscalls/linux/vfs2/mmap.go
+++ b/pkg/sentry/syscalls/linux/vfs2/mmap.go
@@ -61,7 +61,7 @@ func Mmap(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.SyscallC
}
defer func() {
if opts.MappingIdentity != nil {
- opts.MappingIdentity.DecRef()
+ opts.MappingIdentity.DecRef(t)
}
}()
@@ -71,7 +71,7 @@ func Mmap(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.SyscallC
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// mmap unconditionally requires that the FD is readable.
if !file.IsReadable() {
diff --git a/pkg/sentry/syscalls/linux/vfs2/mount.go b/pkg/sentry/syscalls/linux/vfs2/mount.go
index ea337de7c..4bd5c7ca2 100644
--- a/pkg/sentry/syscalls/linux/vfs2/mount.go
+++ b/pkg/sentry/syscalls/linux/vfs2/mount.go
@@ -108,7 +108,7 @@ func Mount(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if err != nil {
return 0, nil, err
}
- defer target.Release()
+ defer target.Release(t)
return 0, nil, t.Kernel().VFS().MountAt(t, creds, source, &target.pop, fsType, &opts)
}
@@ -140,7 +140,7 @@ func Umount2(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysca
if err != nil {
return 0, nil, err
}
- defer tpop.Release()
+ defer tpop.Release(t)
opts := vfs.UmountOptions{
Flags: uint32(flags),
diff --git a/pkg/sentry/syscalls/linux/vfs2/path.go b/pkg/sentry/syscalls/linux/vfs2/path.go
index 97da6c647..90a511d9a 100644
--- a/pkg/sentry/syscalls/linux/vfs2/path.go
+++ b/pkg/sentry/syscalls/linux/vfs2/path.go
@@ -42,7 +42,7 @@ func getTaskPathOperation(t *kernel.Task, dirfd int32, path fspath.Path, shouldA
haveStartRef := false
if !path.Absolute {
if !path.HasComponents() && !bool(shouldAllowEmptyPath) {
- root.DecRef()
+ root.DecRef(t)
return taskPathOperation{}, syserror.ENOENT
}
if dirfd == linux.AT_FDCWD {
@@ -51,13 +51,13 @@ func getTaskPathOperation(t *kernel.Task, dirfd int32, path fspath.Path, shouldA
} else {
dirfile := t.GetFileVFS2(dirfd)
if dirfile == nil {
- root.DecRef()
+ root.DecRef(t)
return taskPathOperation{}, syserror.EBADF
}
start = dirfile.VirtualDentry()
start.IncRef()
haveStartRef = true
- dirfile.DecRef()
+ dirfile.DecRef(t)
}
}
return taskPathOperation{
@@ -71,10 +71,10 @@ func getTaskPathOperation(t *kernel.Task, dirfd int32, path fspath.Path, shouldA
}, nil
}
-func (tpop *taskPathOperation) Release() {
- tpop.pop.Root.DecRef()
+func (tpop *taskPathOperation) Release(t *kernel.Task) {
+ tpop.pop.Root.DecRef(t)
if tpop.haveStartRef {
- tpop.pop.Start.DecRef()
+ tpop.pop.Start.DecRef(t)
tpop.haveStartRef = false
}
}
diff --git a/pkg/sentry/syscalls/linux/vfs2/pipe.go b/pkg/sentry/syscalls/linux/vfs2/pipe.go
index 4a01e4209..9b4848d9e 100644
--- a/pkg/sentry/syscalls/linux/vfs2/pipe.go
+++ b/pkg/sentry/syscalls/linux/vfs2/pipe.go
@@ -42,8 +42,8 @@ func pipe2(t *kernel.Task, addr usermem.Addr, flags int32) error {
return syserror.EINVAL
}
r, w := pipefs.NewConnectedPipeFDs(t, t.Kernel().PipeMount(), uint32(flags&linux.O_NONBLOCK))
- defer r.DecRef()
- defer w.DecRef()
+ defer r.DecRef(t)
+ defer w.DecRef(t)
fds, err := t.NewFDsVFS2(0, []*vfs.FileDescription{r, w}, kernel.FDFlags{
CloseOnExec: flags&linux.O_CLOEXEC != 0,
@@ -54,7 +54,7 @@ func pipe2(t *kernel.Task, addr usermem.Addr, flags int32) error {
if _, err := t.CopyOut(addr, fds); err != nil {
for _, fd := range fds {
if _, file := t.FDTable().Remove(fd); file != nil {
- file.DecRef()
+ file.DecRef(t)
}
}
return err
diff --git a/pkg/sentry/syscalls/linux/vfs2/poll.go b/pkg/sentry/syscalls/linux/vfs2/poll.go
index ff1b25d7b..7b9d5e18a 100644
--- a/pkg/sentry/syscalls/linux/vfs2/poll.go
+++ b/pkg/sentry/syscalls/linux/vfs2/poll.go
@@ -73,7 +73,7 @@ func initReadiness(t *kernel.Task, pfd *linux.PollFD, state *pollState, ch chan
}
if ch == nil {
- defer file.DecRef()
+ defer file.DecRef(t)
} else {
state.file = file
state.waiter, _ = waiter.NewChannelEntry(ch)
@@ -85,11 +85,11 @@ func initReadiness(t *kernel.Task, pfd *linux.PollFD, state *pollState, ch chan
}
// releaseState releases all the pollState in "state".
-func releaseState(state []pollState) {
+func releaseState(t *kernel.Task, state []pollState) {
for i := range state {
if state[i].file != nil {
state[i].file.EventUnregister(&state[i].waiter)
- state[i].file.DecRef()
+ state[i].file.DecRef(t)
}
}
}
@@ -110,7 +110,7 @@ func pollBlock(t *kernel.Task, pfd []linux.PollFD, timeout time.Duration) (time.
// result, we stop registering for events but still go through all files
// to get their ready masks.
state := make([]pollState, len(pfd))
- defer releaseState(state)
+ defer releaseState(t, state)
n := uintptr(0)
for i := range pfd {
initReadiness(t, &pfd[i], &state[i], ch)
@@ -269,7 +269,7 @@ func doSelect(t *kernel.Task, nfds int, readFDs, writeFDs, exceptFDs usermem.Add
if file == nil {
return 0, syserror.EBADF
}
- file.DecRef()
+ file.DecRef(t)
var mask int16
if (rV & m) != 0 {
diff --git a/pkg/sentry/syscalls/linux/vfs2/read_write.go b/pkg/sentry/syscalls/linux/vfs2/read_write.go
index cd25597a7..a905dae0a 100644
--- a/pkg/sentry/syscalls/linux/vfs2/read_write.go
+++ b/pkg/sentry/syscalls/linux/vfs2/read_write.go
@@ -44,7 +44,7 @@ func Read(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.SyscallC
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Check that the size is legitimate.
si := int(size)
@@ -75,7 +75,7 @@ func Readv(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Get the destination of the read.
dst, err := t.IovecsIOSequence(addr, iovcnt, usermem.IOOpts{
@@ -94,7 +94,7 @@ func read(t *kernel.Task, file *vfs.FileDescription, dst usermem.IOSequence, opt
n, err := file.Read(t, dst, opts)
if err != syserror.ErrWouldBlock {
if n > 0 {
- file.Dentry().InotifyWithParent(linux.IN_ACCESS, 0, vfs.PathEvent)
+ file.Dentry().InotifyWithParent(t, linux.IN_ACCESS, 0, vfs.PathEvent)
}
return n, err
}
@@ -102,7 +102,7 @@ func read(t *kernel.Task, file *vfs.FileDescription, dst usermem.IOSequence, opt
allowBlock, deadline, hasDeadline := blockPolicy(t, file)
if !allowBlock {
if n > 0 {
- file.Dentry().InotifyWithParent(linux.IN_ACCESS, 0, vfs.PathEvent)
+ file.Dentry().InotifyWithParent(t, linux.IN_ACCESS, 0, vfs.PathEvent)
}
return n, err
}
@@ -135,7 +135,7 @@ func read(t *kernel.Task, file *vfs.FileDescription, dst usermem.IOSequence, opt
file.EventUnregister(&w)
if total > 0 {
- file.Dentry().InotifyWithParent(linux.IN_ACCESS, 0, vfs.PathEvent)
+ file.Dentry().InotifyWithParent(t, linux.IN_ACCESS, 0, vfs.PathEvent)
}
return total, err
}
@@ -151,7 +151,7 @@ func Pread64(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysca
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Check that the offset is legitimate and does not overflow.
if offset < 0 || offset+int64(size) < 0 {
@@ -188,7 +188,7 @@ func Preadv(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Check that the offset is legitimate.
if offset < 0 {
@@ -226,7 +226,7 @@ func Preadv2(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysca
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Check that the offset is legitimate.
if offset < -1 {
@@ -258,7 +258,7 @@ func pread(t *kernel.Task, file *vfs.FileDescription, dst usermem.IOSequence, of
n, err := file.PRead(t, dst, offset, opts)
if err != syserror.ErrWouldBlock {
if n > 0 {
- file.Dentry().InotifyWithParent(linux.IN_ACCESS, 0, vfs.PathEvent)
+ file.Dentry().InotifyWithParent(t, linux.IN_ACCESS, 0, vfs.PathEvent)
}
return n, err
}
@@ -266,7 +266,7 @@ func pread(t *kernel.Task, file *vfs.FileDescription, dst usermem.IOSequence, of
allowBlock, deadline, hasDeadline := blockPolicy(t, file)
if !allowBlock {
if n > 0 {
- file.Dentry().InotifyWithParent(linux.IN_ACCESS, 0, vfs.PathEvent)
+ file.Dentry().InotifyWithParent(t, linux.IN_ACCESS, 0, vfs.PathEvent)
}
return n, err
}
@@ -299,7 +299,7 @@ func pread(t *kernel.Task, file *vfs.FileDescription, dst usermem.IOSequence, of
file.EventUnregister(&w)
if total > 0 {
- file.Dentry().InotifyWithParent(linux.IN_ACCESS, 0, vfs.PathEvent)
+ file.Dentry().InotifyWithParent(t, linux.IN_ACCESS, 0, vfs.PathEvent)
}
return total, err
}
@@ -314,7 +314,7 @@ func Write(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Check that the size is legitimate.
si := int(size)
@@ -345,7 +345,7 @@ func Writev(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Get the source of the write.
src, err := t.IovecsIOSequence(addr, iovcnt, usermem.IOOpts{
@@ -364,7 +364,7 @@ func write(t *kernel.Task, file *vfs.FileDescription, src usermem.IOSequence, op
n, err := file.Write(t, src, opts)
if err != syserror.ErrWouldBlock {
if n > 0 {
- file.Dentry().InotifyWithParent(linux.IN_MODIFY, 0, vfs.PathEvent)
+ file.Dentry().InotifyWithParent(t, linux.IN_MODIFY, 0, vfs.PathEvent)
}
return n, err
}
@@ -372,7 +372,7 @@ func write(t *kernel.Task, file *vfs.FileDescription, src usermem.IOSequence, op
allowBlock, deadline, hasDeadline := blockPolicy(t, file)
if !allowBlock {
if n > 0 {
- file.Dentry().InotifyWithParent(linux.IN_MODIFY, 0, vfs.PathEvent)
+ file.Dentry().InotifyWithParent(t, linux.IN_MODIFY, 0, vfs.PathEvent)
}
return n, err
}
@@ -405,7 +405,7 @@ func write(t *kernel.Task, file *vfs.FileDescription, src usermem.IOSequence, op
file.EventUnregister(&w)
if total > 0 {
- file.Dentry().InotifyWithParent(linux.IN_MODIFY, 0, vfs.PathEvent)
+ file.Dentry().InotifyWithParent(t, linux.IN_MODIFY, 0, vfs.PathEvent)
}
return total, err
}
@@ -421,7 +421,7 @@ func Pwrite64(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Check that the offset is legitimate and does not overflow.
if offset < 0 || offset+int64(size) < 0 {
@@ -458,7 +458,7 @@ func Pwritev(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysca
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Check that the offset is legitimate.
if offset < 0 {
@@ -496,7 +496,7 @@ func Pwritev2(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Check that the offset is legitimate.
if offset < -1 {
@@ -528,7 +528,7 @@ func pwrite(t *kernel.Task, file *vfs.FileDescription, src usermem.IOSequence, o
n, err := file.PWrite(t, src, offset, opts)
if err != syserror.ErrWouldBlock {
if n > 0 {
- file.Dentry().InotifyWithParent(linux.IN_MODIFY, 0, vfs.PathEvent)
+ file.Dentry().InotifyWithParent(t, linux.IN_MODIFY, 0, vfs.PathEvent)
}
return n, err
}
@@ -536,7 +536,7 @@ func pwrite(t *kernel.Task, file *vfs.FileDescription, src usermem.IOSequence, o
allowBlock, deadline, hasDeadline := blockPolicy(t, file)
if !allowBlock {
if n > 0 {
- file.Dentry().InotifyWithParent(linux.IN_ACCESS, 0, vfs.PathEvent)
+ file.Dentry().InotifyWithParent(t, linux.IN_ACCESS, 0, vfs.PathEvent)
}
return n, err
}
@@ -569,7 +569,7 @@ func pwrite(t *kernel.Task, file *vfs.FileDescription, src usermem.IOSequence, o
file.EventUnregister(&w)
if total > 0 {
- file.Dentry().InotifyWithParent(linux.IN_ACCESS, 0, vfs.PathEvent)
+ file.Dentry().InotifyWithParent(t, linux.IN_ACCESS, 0, vfs.PathEvent)
}
return total, err
}
@@ -601,7 +601,7 @@ func Lseek(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
newoff, err := file.Seek(t, offset, whence)
return uintptr(newoff), nil, err
@@ -617,7 +617,7 @@ func Readahead(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sys
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Check that the file is readable.
if !file.IsReadable() {
diff --git a/pkg/sentry/syscalls/linux/vfs2/setstat.go b/pkg/sentry/syscalls/linux/vfs2/setstat.go
index 25cdb7a55..5e6eb13ba 100644
--- a/pkg/sentry/syscalls/linux/vfs2/setstat.go
+++ b/pkg/sentry/syscalls/linux/vfs2/setstat.go
@@ -66,7 +66,7 @@ func Fchmod(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
return 0, nil, file.SetStat(t, vfs.SetStatOptions{
Stat: linux.Statx{
@@ -151,7 +151,7 @@ func Fchown(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
var opts vfs.SetStatOptions
if err := populateSetStatOptionsForChown(t, owner, group, &opts); err != nil {
@@ -197,7 +197,7 @@ func Ftruncate(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sys
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
if !file.IsWritable() {
return 0, nil, syserror.EINVAL
@@ -224,7 +224,7 @@ func Fallocate(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sys
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
if !file.IsWritable() {
return 0, nil, syserror.EBADF
@@ -258,7 +258,7 @@ func Fallocate(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sys
return 0, nil, err
}
- file.Dentry().InotifyWithParent(linux.IN_MODIFY, 0, vfs.PathEvent)
+ file.Dentry().InotifyWithParent(t, linux.IN_MODIFY, 0, vfs.PathEvent)
return 0, nil, nil
}
@@ -438,7 +438,7 @@ func populateSetStatOptionsForUtimens(t *kernel.Task, timesAddr usermem.Addr, op
func setstatat(t *kernel.Task, dirfd int32, path fspath.Path, shouldAllowEmptyPath shouldAllowEmptyPath, shouldFollowFinalSymlink shouldFollowFinalSymlink, opts *vfs.SetStatOptions) error {
root := t.FSContext().RootDirectoryVFS2()
- defer root.DecRef()
+ defer root.DecRef(t)
start := root
if !path.Absolute {
if !path.HasComponents() && !bool(shouldAllowEmptyPath) {
@@ -446,7 +446,7 @@ func setstatat(t *kernel.Task, dirfd int32, path fspath.Path, shouldAllowEmptyPa
}
if dirfd == linux.AT_FDCWD {
start = t.FSContext().WorkingDirectoryVFS2()
- defer start.DecRef()
+ defer start.DecRef(t)
} else {
dirfile := t.GetFileVFS2(dirfd)
if dirfile == nil {
@@ -457,13 +457,13 @@ func setstatat(t *kernel.Task, dirfd int32, path fspath.Path, shouldAllowEmptyPa
// VirtualFilesystem.SetStatAt(), since the former may be able
// to use opened file state to expedite the SetStat.
err := dirfile.SetStat(t, *opts)
- dirfile.DecRef()
+ dirfile.DecRef(t)
return err
}
start = dirfile.VirtualDentry()
start.IncRef()
- defer start.DecRef()
- dirfile.DecRef()
+ defer start.DecRef(t)
+ dirfile.DecRef(t)
}
}
return t.Kernel().VFS().SetStatAt(t, t.Credentials(), &vfs.PathOperation{
diff --git a/pkg/sentry/syscalls/linux/vfs2/signal.go b/pkg/sentry/syscalls/linux/vfs2/signal.go
index 623992f6f..b89f34cdb 100644
--- a/pkg/sentry/syscalls/linux/vfs2/signal.go
+++ b/pkg/sentry/syscalls/linux/vfs2/signal.go
@@ -45,7 +45,7 @@ func sharedSignalfd(t *kernel.Task, fd int32, sigset usermem.Addr, sigsetsize ui
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Is this a signalfd?
if sfd, ok := file.Impl().(*signalfd.SignalFileDescription); ok {
@@ -68,7 +68,7 @@ func sharedSignalfd(t *kernel.Task, fd int32, sigset usermem.Addr, sigsetsize ui
if err != nil {
return 0, nil, err
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Create a new descriptor.
fd, err = t.NewFDFromVFS2(0, file, kernel.FDFlags{
diff --git a/pkg/sentry/syscalls/linux/vfs2/socket.go b/pkg/sentry/syscalls/linux/vfs2/socket.go
index 8096a8f9c..4a68c64f3 100644
--- a/pkg/sentry/syscalls/linux/vfs2/socket.go
+++ b/pkg/sentry/syscalls/linux/vfs2/socket.go
@@ -196,7 +196,7 @@ func Socket(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if e != nil {
return 0, nil, e.ToError()
}
- defer s.DecRef()
+ defer s.DecRef(t)
if err := s.SetStatusFlags(t, t.Credentials(), uint32(stype&linux.SOCK_NONBLOCK)); err != nil {
return 0, nil, err
@@ -230,8 +230,8 @@ func SocketPair(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sy
return 0, nil, e.ToError()
}
// Adding to the FD table will cause an extra reference to be acquired.
- defer s1.DecRef()
- defer s2.DecRef()
+ defer s1.DecRef(t)
+ defer s2.DecRef(t)
nonblocking := uint32(stype & linux.SOCK_NONBLOCK)
if err := s1.SetStatusFlags(t, t.Credentials(), nonblocking); err != nil {
@@ -253,7 +253,7 @@ func SocketPair(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sy
if _, err := t.CopyOut(addr, fds); err != nil {
for _, fd := range fds {
if _, file := t.FDTable().Remove(fd); file != nil {
- file.DecRef()
+ file.DecRef(t)
}
}
return 0, nil, err
@@ -273,7 +273,7 @@ func Connect(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysca
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.Impl().(socket.SocketVFS2)
@@ -304,7 +304,7 @@ func accept(t *kernel.Task, fd int32, addr usermem.Addr, addrLen usermem.Addr, f
if file == nil {
return 0, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.Impl().(socket.SocketVFS2)
@@ -363,7 +363,7 @@ func Bind(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.SyscallC
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.Impl().(socket.SocketVFS2)
@@ -390,7 +390,7 @@ func Listen(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.Impl().(socket.SocketVFS2)
@@ -419,7 +419,7 @@ func Shutdown(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.Impl().(socket.SocketVFS2)
@@ -450,7 +450,7 @@ func GetSockOpt(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sy
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.Impl().(socket.SocketVFS2)
@@ -532,7 +532,7 @@ func SetSockOpt(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sy
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.Impl().(socket.SocketVFS2)
@@ -570,7 +570,7 @@ func GetSockName(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.S
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.Impl().(socket.SocketVFS2)
@@ -598,7 +598,7 @@ func GetPeerName(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.S
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.Impl().(socket.SocketVFS2)
@@ -631,7 +631,7 @@ func RecvMsg(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysca
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.Impl().(socket.SocketVFS2)
@@ -684,7 +684,7 @@ func RecvMMsg(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.Impl().(socket.SocketVFS2)
@@ -778,7 +778,7 @@ func recvSingleMsg(t *kernel.Task, s socket.SocketVFS2, msgPtr usermem.Addr, fla
}
if !cms.Unix.Empty() {
mflags |= linux.MSG_CTRUNC
- cms.Release()
+ cms.Release(t)
}
if int(msg.Flags) != mflags {
@@ -798,7 +798,7 @@ func recvSingleMsg(t *kernel.Task, s socket.SocketVFS2, msgPtr usermem.Addr, fla
if e != nil {
return 0, syserror.ConvertIntr(e.ToError(), kernel.ERESTARTSYS)
}
- defer cms.Release()
+ defer cms.Release(t)
controlData := make([]byte, 0, msg.ControlLen)
controlData = control.PackControlMessages(t, cms, controlData)
@@ -854,7 +854,7 @@ func recvFrom(t *kernel.Task, fd int32, bufPtr usermem.Addr, bufLen uint64, flag
if file == nil {
return 0, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.Impl().(socket.SocketVFS2)
@@ -883,7 +883,7 @@ func recvFrom(t *kernel.Task, fd int32, bufPtr usermem.Addr, bufLen uint64, flag
}
n, _, sender, senderLen, cm, e := s.RecvMsg(t, dst, int(flags), haveDeadline, deadline, nameLenPtr != 0, 0)
- cm.Release()
+ cm.Release(t)
if e != nil {
return 0, syserror.ConvertIntr(e.ToError(), kernel.ERESTARTSYS)
}
@@ -927,7 +927,7 @@ func SendMsg(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysca
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.Impl().(socket.SocketVFS2)
@@ -965,7 +965,7 @@ func SendMMsg(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.Impl().(socket.SocketVFS2)
@@ -1069,7 +1069,7 @@ func sendSingleMsg(t *kernel.Task, s socket.SocketVFS2, file *vfs.FileDescriptio
n, e := s.SendMsg(t, src, to, int(flags), haveDeadline, deadline, controlMessages)
err = slinux.HandleIOErrorVFS2(t, n != 0, e.ToError(), kernel.ERESTARTSYS, "sendmsg", file)
if err != nil {
- controlMessages.Release()
+ controlMessages.Release(t)
}
return uintptr(n), err
}
@@ -1087,7 +1087,7 @@ func sendTo(t *kernel.Task, fd int32, bufPtr usermem.Addr, bufLen uint64, flags
if file == nil {
return 0, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// Extract the socket.
s, ok := file.Impl().(socket.SocketVFS2)
diff --git a/pkg/sentry/syscalls/linux/vfs2/splice.go b/pkg/sentry/syscalls/linux/vfs2/splice.go
index 63ab11f8c..16f59fce9 100644
--- a/pkg/sentry/syscalls/linux/vfs2/splice.go
+++ b/pkg/sentry/syscalls/linux/vfs2/splice.go
@@ -53,12 +53,12 @@ func Splice(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if inFile == nil {
return 0, nil, syserror.EBADF
}
- defer inFile.DecRef()
+ defer inFile.DecRef(t)
outFile := t.GetFileVFS2(outFD)
if outFile == nil {
return 0, nil, syserror.EBADF
}
- defer outFile.DecRef()
+ defer outFile.DecRef(t)
// Check that both files support the required directionality.
if !inFile.IsReadable() || !outFile.IsWritable() {
@@ -175,7 +175,7 @@ func Splice(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
// On Linux, inotify behavior is not very consistent with splice(2). We try
// our best to emulate Linux for very basic calls to splice, where for some
// reason, events are generated for output files, but not input files.
- outFile.Dentry().InotifyWithParent(linux.IN_MODIFY, 0, vfs.PathEvent)
+ outFile.Dentry().InotifyWithParent(t, linux.IN_MODIFY, 0, vfs.PathEvent)
return uintptr(n), nil, nil
}
@@ -203,12 +203,12 @@ func Tee(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.SyscallCo
if inFile == nil {
return 0, nil, syserror.EBADF
}
- defer inFile.DecRef()
+ defer inFile.DecRef(t)
outFile := t.GetFileVFS2(outFD)
if outFile == nil {
return 0, nil, syserror.EBADF
}
- defer outFile.DecRef()
+ defer outFile.DecRef(t)
// Check that both files support the required directionality.
if !inFile.IsReadable() || !outFile.IsWritable() {
@@ -251,7 +251,7 @@ func Tee(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.SyscallCo
if n == 0 {
return 0, nil, err
}
- outFile.Dentry().InotifyWithParent(linux.IN_MODIFY, 0, vfs.PathEvent)
+ outFile.Dentry().InotifyWithParent(t, linux.IN_MODIFY, 0, vfs.PathEvent)
return uintptr(n), nil, nil
}
@@ -266,7 +266,7 @@ func Sendfile(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc
if inFile == nil {
return 0, nil, syserror.EBADF
}
- defer inFile.DecRef()
+ defer inFile.DecRef(t)
if !inFile.IsReadable() {
return 0, nil, syserror.EBADF
}
@@ -275,7 +275,7 @@ func Sendfile(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc
if outFile == nil {
return 0, nil, syserror.EBADF
}
- defer outFile.DecRef()
+ defer outFile.DecRef(t)
if !outFile.IsWritable() {
return 0, nil, syserror.EBADF
}
@@ -419,8 +419,8 @@ func Sendfile(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc
return 0, nil, err
}
- inFile.Dentry().InotifyWithParent(linux.IN_ACCESS, 0, vfs.PathEvent)
- outFile.Dentry().InotifyWithParent(linux.IN_MODIFY, 0, vfs.PathEvent)
+ inFile.Dentry().InotifyWithParent(t, linux.IN_ACCESS, 0, vfs.PathEvent)
+ outFile.Dentry().InotifyWithParent(t, linux.IN_MODIFY, 0, vfs.PathEvent)
return uintptr(n), nil, nil
}
diff --git a/pkg/sentry/syscalls/linux/vfs2/stat.go b/pkg/sentry/syscalls/linux/vfs2/stat.go
index bb1d5cac4..0f5d5189c 100644
--- a/pkg/sentry/syscalls/linux/vfs2/stat.go
+++ b/pkg/sentry/syscalls/linux/vfs2/stat.go
@@ -65,7 +65,7 @@ func fstatat(t *kernel.Task, dirfd int32, pathAddr, statAddr usermem.Addr, flags
}
root := t.FSContext().RootDirectoryVFS2()
- defer root.DecRef()
+ defer root.DecRef(t)
start := root
if !path.Absolute {
if !path.HasComponents() && flags&linux.AT_EMPTY_PATH == 0 {
@@ -73,7 +73,7 @@ func fstatat(t *kernel.Task, dirfd int32, pathAddr, statAddr usermem.Addr, flags
}
if dirfd == linux.AT_FDCWD {
start = t.FSContext().WorkingDirectoryVFS2()
- defer start.DecRef()
+ defer start.DecRef(t)
} else {
dirfile := t.GetFileVFS2(dirfd)
if dirfile == nil {
@@ -85,7 +85,7 @@ func fstatat(t *kernel.Task, dirfd int32, pathAddr, statAddr usermem.Addr, flags
// former may be able to use opened file state to expedite the
// Stat.
statx, err := dirfile.Stat(t, opts)
- dirfile.DecRef()
+ dirfile.DecRef(t)
if err != nil {
return err
}
@@ -96,8 +96,8 @@ func fstatat(t *kernel.Task, dirfd int32, pathAddr, statAddr usermem.Addr, flags
}
start = dirfile.VirtualDentry()
start.IncRef()
- defer start.DecRef()
- dirfile.DecRef()
+ defer start.DecRef(t)
+ dirfile.DecRef(t)
}
}
@@ -132,7 +132,7 @@ func Fstat(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
statx, err := file.Stat(t, vfs.StatOptions{
Mask: linux.STATX_BASIC_STATS,
@@ -177,7 +177,7 @@ func Statx(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
}
root := t.FSContext().RootDirectoryVFS2()
- defer root.DecRef()
+ defer root.DecRef(t)
start := root
if !path.Absolute {
if !path.HasComponents() && flags&linux.AT_EMPTY_PATH == 0 {
@@ -185,7 +185,7 @@ func Statx(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
}
if dirfd == linux.AT_FDCWD {
start = t.FSContext().WorkingDirectoryVFS2()
- defer start.DecRef()
+ defer start.DecRef(t)
} else {
dirfile := t.GetFileVFS2(dirfd)
if dirfile == nil {
@@ -197,7 +197,7 @@ func Statx(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
// former may be able to use opened file state to expedite the
// Stat.
statx, err := dirfile.Stat(t, opts)
- dirfile.DecRef()
+ dirfile.DecRef(t)
if err != nil {
return 0, nil, err
}
@@ -207,8 +207,8 @@ func Statx(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
}
start = dirfile.VirtualDentry()
start.IncRef()
- defer start.DecRef()
- dirfile.DecRef()
+ defer start.DecRef(t)
+ dirfile.DecRef(t)
}
}
@@ -282,7 +282,7 @@ func accessAt(t *kernel.Task, dirfd int32, pathAddr usermem.Addr, mode uint) err
if err != nil {
return err
}
- defer tpop.Release()
+ defer tpop.Release(t)
// access(2) and faccessat(2) check permissions using real
// UID/GID, not effective UID/GID.
@@ -328,7 +328,7 @@ func readlinkat(t *kernel.Task, dirfd int32, pathAddr, bufAddr usermem.Addr, siz
if err != nil {
return 0, nil, err
}
- defer tpop.Release()
+ defer tpop.Release(t)
target, err := t.Kernel().VFS().ReadlinkAt(t, t.Credentials(), &tpop.pop)
if err != nil {
@@ -358,7 +358,7 @@ func Statfs(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if err != nil {
return 0, nil, err
}
- defer tpop.Release()
+ defer tpop.Release(t)
statfs, err := t.Kernel().VFS().StatFSAt(t, t.Credentials(), &tpop.pop)
if err != nil {
@@ -377,7 +377,7 @@ func Fstatfs(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysca
if err != nil {
return 0, nil, err
}
- defer tpop.Release()
+ defer tpop.Release(t)
statfs, err := t.Kernel().VFS().StatFSAt(t, t.Credentials(), &tpop.pop)
if err != nil {
diff --git a/pkg/sentry/syscalls/linux/vfs2/sync.go b/pkg/sentry/syscalls/linux/vfs2/sync.go
index 0d0ebf46a..a6491ac37 100644
--- a/pkg/sentry/syscalls/linux/vfs2/sync.go
+++ b/pkg/sentry/syscalls/linux/vfs2/sync.go
@@ -34,7 +34,7 @@ func Syncfs(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
return 0, nil, file.SyncFS(t)
}
@@ -47,7 +47,7 @@ func Fsync(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
return 0, nil, file.Sync(t)
}
@@ -77,7 +77,7 @@ func SyncFileRange(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
// TODO(gvisor.dev/issue/1897): Currently, the only file syncing we support
// is a full-file sync, i.e. fsync(2). As a result, there are severe
diff --git a/pkg/sentry/syscalls/linux/vfs2/timerfd.go b/pkg/sentry/syscalls/linux/vfs2/timerfd.go
index 5ac79bc09..7a26890ef 100644
--- a/pkg/sentry/syscalls/linux/vfs2/timerfd.go
+++ b/pkg/sentry/syscalls/linux/vfs2/timerfd.go
@@ -50,11 +50,11 @@ func TimerfdCreate(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel
return 0, nil, syserror.EINVAL
}
vfsObj := t.Kernel().VFS()
- file, err := timerfd.New(vfsObj, clock, fileFlags)
+ file, err := timerfd.New(t, vfsObj, clock, fileFlags)
if err != nil {
return 0, nil, err
}
- defer file.DecRef()
+ defer file.DecRef(t)
fd, err := t.NewFDFromVFS2(0, file, kernel.FDFlags{
CloseOnExec: flags&linux.TFD_CLOEXEC != 0,
})
@@ -79,7 +79,7 @@ func TimerfdSettime(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kerne
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
tfd, ok := file.Impl().(*timerfd.TimerFileDescription)
if !ok {
@@ -113,7 +113,7 @@ func TimerfdGettime(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kerne
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
tfd, ok := file.Impl().(*timerfd.TimerFileDescription)
if !ok {
diff --git a/pkg/sentry/syscalls/linux/vfs2/xattr.go b/pkg/sentry/syscalls/linux/vfs2/xattr.go
index af455d5c1..ef99246ed 100644
--- a/pkg/sentry/syscalls/linux/vfs2/xattr.go
+++ b/pkg/sentry/syscalls/linux/vfs2/xattr.go
@@ -49,7 +49,7 @@ func listxattr(t *kernel.Task, args arch.SyscallArguments, shouldFollowFinalSyml
if err != nil {
return 0, nil, err
}
- defer tpop.Release()
+ defer tpop.Release(t)
names, err := t.Kernel().VFS().ListxattrAt(t, t.Credentials(), &tpop.pop, uint64(size))
if err != nil {
@@ -72,7 +72,7 @@ func Flistxattr(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sy
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
names, err := file.Listxattr(t, uint64(size))
if err != nil {
@@ -109,7 +109,7 @@ func getxattr(t *kernel.Task, args arch.SyscallArguments, shouldFollowFinalSymli
if err != nil {
return 0, nil, err
}
- defer tpop.Release()
+ defer tpop.Release(t)
name, err := copyInXattrName(t, nameAddr)
if err != nil {
@@ -141,7 +141,7 @@ func Fgetxattr(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sys
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
name, err := copyInXattrName(t, nameAddr)
if err != nil {
@@ -188,7 +188,7 @@ func setxattr(t *kernel.Task, args arch.SyscallArguments, shouldFollowFinalSymli
if err != nil {
return err
}
- defer tpop.Release()
+ defer tpop.Release(t)
name, err := copyInXattrName(t, nameAddr)
if err != nil {
@@ -222,7 +222,7 @@ func Fsetxattr(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sys
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
name, err := copyInXattrName(t, nameAddr)
if err != nil {
@@ -262,7 +262,7 @@ func removexattr(t *kernel.Task, args arch.SyscallArguments, shouldFollowFinalSy
if err != nil {
return err
}
- defer tpop.Release()
+ defer tpop.Release(t)
name, err := copyInXattrName(t, nameAddr)
if err != nil {
@@ -281,7 +281,7 @@ func Fremovexattr(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.
if file == nil {
return 0, nil, syserror.EBADF
}
- defer file.DecRef()
+ defer file.DecRef(t)
name, err := copyInXattrName(t, nameAddr)
if err != nil {
diff --git a/pkg/sentry/vfs/anonfs.go b/pkg/sentry/vfs/anonfs.go
index 641e3e502..5a0e3e6b5 100644
--- a/pkg/sentry/vfs/anonfs.go
+++ b/pkg/sentry/vfs/anonfs.go
@@ -82,7 +82,7 @@ type anonDentry struct {
}
// Release implements FilesystemImpl.Release.
-func (fs *anonFilesystem) Release() {
+func (fs *anonFilesystem) Release(ctx context.Context) {
}
// Sync implements FilesystemImpl.Sync.
@@ -294,7 +294,7 @@ func (d *anonDentry) TryIncRef() bool {
}
// DecRef implements DentryImpl.DecRef.
-func (d *anonDentry) DecRef() {
+func (d *anonDentry) DecRef(ctx context.Context) {
// no-op
}
@@ -303,7 +303,7 @@ func (d *anonDentry) DecRef() {
// Although Linux technically supports inotify on pseudo filesystems (inotify
// is implemented at the vfs layer), it is not particularly useful. It is left
// unimplemented until someone actually needs it.
-func (d *anonDentry) InotifyWithParent(events, cookie uint32, et EventType) {}
+func (d *anonDentry) InotifyWithParent(ctx context.Context, events, cookie uint32, et EventType) {}
// Watches implements DentryImpl.Watches.
func (d *anonDentry) Watches() *Watches {
@@ -311,4 +311,4 @@ func (d *anonDentry) Watches() *Watches {
}
// OnZeroWatches implements Dentry.OnZeroWatches.
-func (d *anonDentry) OnZeroWatches() {}
+func (d *anonDentry) OnZeroWatches(context.Context) {}
diff --git a/pkg/sentry/vfs/dentry.go b/pkg/sentry/vfs/dentry.go
index cea3e6955..bc7ea93ea 100644
--- a/pkg/sentry/vfs/dentry.go
+++ b/pkg/sentry/vfs/dentry.go
@@ -17,6 +17,7 @@ package vfs
import (
"sync/atomic"
+ "gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/sync"
"gvisor.dev/gvisor/pkg/syserror"
)
@@ -102,7 +103,7 @@ type DentryImpl interface {
TryIncRef() bool
// DecRef decrements the Dentry's reference count.
- DecRef()
+ DecRef(ctx context.Context)
// InotifyWithParent notifies all watches on the targets represented by this
// dentry and its parent. The parent's watches are notified first, followed
@@ -113,7 +114,7 @@ type DentryImpl interface {
//
// Note that the events may not actually propagate up to the user, depending
// on the event masks.
- InotifyWithParent(events, cookie uint32, et EventType)
+ InotifyWithParent(ctx context.Context, events, cookie uint32, et EventType)
// Watches returns the set of inotify watches for the file corresponding to
// the Dentry. Dentries that are hard links to the same underlying file
@@ -135,7 +136,7 @@ type DentryImpl interface {
// The caller does not need to hold a reference on the dentry. OnZeroWatches
// may acquire inotify locks, so to prevent deadlock, no inotify locks should
// be held by the caller.
- OnZeroWatches()
+ OnZeroWatches(ctx context.Context)
}
// IncRef increments d's reference count.
@@ -150,8 +151,8 @@ func (d *Dentry) TryIncRef() bool {
}
// DecRef decrements d's reference count.
-func (d *Dentry) DecRef() {
- d.impl.DecRef()
+func (d *Dentry) DecRef(ctx context.Context) {
+ d.impl.DecRef(ctx)
}
// IsDead returns true if d has been deleted or invalidated by its owning
@@ -168,8 +169,8 @@ func (d *Dentry) isMounted() bool {
// InotifyWithParent notifies all watches on the targets represented by d and
// its parent of events.
-func (d *Dentry) InotifyWithParent(events, cookie uint32, et EventType) {
- d.impl.InotifyWithParent(events, cookie, et)
+func (d *Dentry) InotifyWithParent(ctx context.Context, events, cookie uint32, et EventType) {
+ d.impl.InotifyWithParent(ctx, events, cookie, et)
}
// Watches returns the set of inotify watches associated with d.
@@ -182,8 +183,8 @@ func (d *Dentry) Watches() *Watches {
// OnZeroWatches performs cleanup tasks whenever the number of watches on a
// dentry drops to zero.
-func (d *Dentry) OnZeroWatches() {
- d.impl.OnZeroWatches()
+func (d *Dentry) OnZeroWatches(ctx context.Context) {
+ d.impl.OnZeroWatches(ctx)
}
// The following functions are exported so that filesystem implementations can
@@ -214,11 +215,11 @@ func (vfs *VirtualFilesystem) AbortDeleteDentry(d *Dentry) {
// CommitDeleteDentry must be called after PrepareDeleteDentry if the deletion
// succeeds.
-func (vfs *VirtualFilesystem) CommitDeleteDentry(d *Dentry) {
+func (vfs *VirtualFilesystem) CommitDeleteDentry(ctx context.Context, d *Dentry) {
d.dead = true
d.mu.Unlock()
if d.isMounted() {
- vfs.forgetDeadMountpoint(d)
+ vfs.forgetDeadMountpoint(ctx, d)
}
}
@@ -226,12 +227,12 @@ func (vfs *VirtualFilesystem) CommitDeleteDentry(d *Dentry) {
// did for reasons outside of VFS' control (e.g. d represents the local state
// of a file on a remote filesystem on which the file has already been
// deleted).
-func (vfs *VirtualFilesystem) InvalidateDentry(d *Dentry) {
+func (vfs *VirtualFilesystem) InvalidateDentry(ctx context.Context, d *Dentry) {
d.mu.Lock()
d.dead = true
d.mu.Unlock()
if d.isMounted() {
- vfs.forgetDeadMountpoint(d)
+ vfs.forgetDeadMountpoint(ctx, d)
}
}
@@ -278,13 +279,13 @@ func (vfs *VirtualFilesystem) AbortRenameDentry(from, to *Dentry) {
// that was replaced by from.
//
// Preconditions: PrepareRenameDentry was previously called on from and to.
-func (vfs *VirtualFilesystem) CommitRenameReplaceDentry(from, to *Dentry) {
+func (vfs *VirtualFilesystem) CommitRenameReplaceDentry(ctx context.Context, from, to *Dentry) {
from.mu.Unlock()
if to != nil {
to.dead = true
to.mu.Unlock()
if to.isMounted() {
- vfs.forgetDeadMountpoint(to)
+ vfs.forgetDeadMountpoint(ctx, to)
}
}
}
@@ -303,7 +304,7 @@ func (vfs *VirtualFilesystem) CommitRenameExchangeDentry(from, to *Dentry) {
//
// forgetDeadMountpoint is analogous to Linux's
// fs/namespace.c:__detach_mounts().
-func (vfs *VirtualFilesystem) forgetDeadMountpoint(d *Dentry) {
+func (vfs *VirtualFilesystem) forgetDeadMountpoint(ctx context.Context, d *Dentry) {
var (
vdsToDecRef []VirtualDentry
mountsToDecRef []*Mount
@@ -316,9 +317,9 @@ func (vfs *VirtualFilesystem) forgetDeadMountpoint(d *Dentry) {
vfs.mounts.seq.EndWrite()
vfs.mountMu.Unlock()
for _, vd := range vdsToDecRef {
- vd.DecRef()
+ vd.DecRef(ctx)
}
for _, mnt := range mountsToDecRef {
- mnt.DecRef()
+ mnt.DecRef(ctx)
}
}
diff --git a/pkg/sentry/vfs/epoll.go b/pkg/sentry/vfs/epoll.go
index 5b009b928..1b5af9f73 100644
--- a/pkg/sentry/vfs/epoll.go
+++ b/pkg/sentry/vfs/epoll.go
@@ -93,9 +93,9 @@ type epollInterest struct {
// NewEpollInstanceFD returns a FileDescription representing a new epoll
// instance. A reference is taken on the returned FileDescription.
-func (vfs *VirtualFilesystem) NewEpollInstanceFD() (*FileDescription, error) {
+func (vfs *VirtualFilesystem) NewEpollInstanceFD(ctx context.Context) (*FileDescription, error) {
vd := vfs.NewAnonVirtualDentry("[eventpoll]")
- defer vd.DecRef()
+ defer vd.DecRef(ctx)
ep := &EpollInstance{
interest: make(map[epollInterestKey]*epollInterest),
}
@@ -110,7 +110,7 @@ func (vfs *VirtualFilesystem) NewEpollInstanceFD() (*FileDescription, error) {
}
// Release implements FileDescriptionImpl.Release.
-func (ep *EpollInstance) Release() {
+func (ep *EpollInstance) Release(ctx context.Context) {
// Unregister all polled fds.
ep.interestMu.Lock()
defer ep.interestMu.Unlock()
diff --git a/pkg/sentry/vfs/file_description.go b/pkg/sentry/vfs/file_description.go
index 93861fb4a..576ab3920 100644
--- a/pkg/sentry/vfs/file_description.go
+++ b/pkg/sentry/vfs/file_description.go
@@ -171,7 +171,7 @@ func (fd *FileDescription) TryIncRef() bool {
}
// DecRef decrements fd's reference count.
-func (fd *FileDescription) DecRef() {
+func (fd *FileDescription) DecRef(ctx context.Context) {
if refs := atomic.AddInt64(&fd.refs, -1); refs == 0 {
// Unregister fd from all epoll instances.
fd.epollMu.Lock()
@@ -196,11 +196,11 @@ func (fd *FileDescription) DecRef() {
}
// Release implementation resources.
- fd.impl.Release()
+ fd.impl.Release(ctx)
if fd.writable {
fd.vd.mount.EndWrite()
}
- fd.vd.DecRef()
+ fd.vd.DecRef(ctx)
fd.flagsMu.Lock()
// TODO(gvisor.dev/issue/1663): We may need to unregister during save, as we do in VFS1.
if fd.statusFlags&linux.O_ASYNC != 0 && fd.asyncHandler != nil {
@@ -335,7 +335,7 @@ func (fd *FileDescription) Impl() FileDescriptionImpl {
type FileDescriptionImpl interface {
// Release is called when the associated FileDescription reaches zero
// references.
- Release()
+ Release(ctx context.Context)
// OnClose is called when a file descriptor representing the
// FileDescription is closed. Note that returning a non-nil error does not
@@ -526,7 +526,7 @@ func (fd *FileDescription) Stat(ctx context.Context, opts StatOptions) (linux.St
Start: fd.vd,
})
stat, err := fd.vd.mount.fs.impl.StatAt(ctx, rp, opts)
- vfsObj.putResolvingPath(rp)
+ vfsObj.putResolvingPath(ctx, rp)
return stat, err
}
return fd.impl.Stat(ctx, opts)
@@ -541,7 +541,7 @@ func (fd *FileDescription) SetStat(ctx context.Context, opts SetStatOptions) err
Start: fd.vd,
})
err := fd.vd.mount.fs.impl.SetStatAt(ctx, rp, opts)
- vfsObj.putResolvingPath(rp)
+ vfsObj.putResolvingPath(ctx, rp)
return err
}
return fd.impl.SetStat(ctx, opts)
@@ -557,7 +557,7 @@ func (fd *FileDescription) StatFS(ctx context.Context) (linux.Statfs, error) {
Start: fd.vd,
})
statfs, err := fd.vd.mount.fs.impl.StatFSAt(ctx, rp)
- vfsObj.putResolvingPath(rp)
+ vfsObj.putResolvingPath(ctx, rp)
return statfs, err
}
return fd.impl.StatFS(ctx)
@@ -674,7 +674,7 @@ func (fd *FileDescription) Listxattr(ctx context.Context, size uint64) ([]string
Start: fd.vd,
})
names, err := fd.vd.mount.fs.impl.ListxattrAt(ctx, rp, size)
- vfsObj.putResolvingPath(rp)
+ vfsObj.putResolvingPath(ctx, rp)
return names, err
}
names, err := fd.impl.Listxattr(ctx, size)
@@ -703,7 +703,7 @@ func (fd *FileDescription) Getxattr(ctx context.Context, opts *GetxattrOptions)
Start: fd.vd,
})
val, err := fd.vd.mount.fs.impl.GetxattrAt(ctx, rp, *opts)
- vfsObj.putResolvingPath(rp)
+ vfsObj.putResolvingPath(ctx, rp)
return val, err
}
return fd.impl.Getxattr(ctx, *opts)
@@ -719,7 +719,7 @@ func (fd *FileDescription) Setxattr(ctx context.Context, opts *SetxattrOptions)
Start: fd.vd,
})
err := fd.vd.mount.fs.impl.SetxattrAt(ctx, rp, *opts)
- vfsObj.putResolvingPath(rp)
+ vfsObj.putResolvingPath(ctx, rp)
return err
}
return fd.impl.Setxattr(ctx, *opts)
@@ -735,7 +735,7 @@ func (fd *FileDescription) Removexattr(ctx context.Context, name string) error {
Start: fd.vd,
})
err := fd.vd.mount.fs.impl.RemovexattrAt(ctx, rp, name)
- vfsObj.putResolvingPath(rp)
+ vfsObj.putResolvingPath(ctx, rp)
return err
}
return fd.impl.Removexattr(ctx, name)
@@ -752,7 +752,7 @@ func (fd *FileDescription) MappedName(ctx context.Context) string {
vfsroot := RootFromContext(ctx)
s, _ := fd.vd.mount.vfs.PathnameWithDeleted(ctx, vfsroot, fd.vd)
if vfsroot.Ok() {
- vfsroot.DecRef()
+ vfsroot.DecRef(ctx)
}
return s
}
diff --git a/pkg/sentry/vfs/filesystem.go b/pkg/sentry/vfs/filesystem.go
index 6bb9ca180..df3758fd1 100644
--- a/pkg/sentry/vfs/filesystem.go
+++ b/pkg/sentry/vfs/filesystem.go
@@ -100,12 +100,12 @@ func (fs *Filesystem) TryIncRef() bool {
}
// DecRef decrements fs' reference count.
-func (fs *Filesystem) DecRef() {
+func (fs *Filesystem) DecRef(ctx context.Context) {
if refs := atomic.AddInt64(&fs.refs, -1); refs == 0 {
fs.vfs.filesystemsMu.Lock()
delete(fs.vfs.filesystems, fs)
fs.vfs.filesystemsMu.Unlock()
- fs.impl.Release()
+ fs.impl.Release(ctx)
} else if refs < 0 {
panic("Filesystem.decRef() called without holding a reference")
}
@@ -149,7 +149,7 @@ func (fs *Filesystem) DecRef() {
type FilesystemImpl interface {
// Release is called when the associated Filesystem reaches zero
// references.
- Release()
+ Release(ctx context.Context)
// Sync "causes all pending modifications to filesystem metadata and cached
// file data to be written to the underlying [filesystem]", as by syncfs(2).
diff --git a/pkg/sentry/vfs/inotify.go b/pkg/sentry/vfs/inotify.go
index 167b731ac..aff220a61 100644
--- a/pkg/sentry/vfs/inotify.go
+++ b/pkg/sentry/vfs/inotify.go
@@ -100,7 +100,7 @@ func NewInotifyFD(ctx context.Context, vfsObj *VirtualFilesystem, flags uint32)
id := uniqueid.GlobalFromContext(ctx)
vd := vfsObj.NewAnonVirtualDentry(fmt.Sprintf("[inotifyfd:%d]", id))
- defer vd.DecRef()
+ defer vd.DecRef(ctx)
fd := &Inotify{
id: id,
scratch: make([]byte, inotifyEventBaseSize),
@@ -118,7 +118,7 @@ func NewInotifyFD(ctx context.Context, vfsObj *VirtualFilesystem, flags uint32)
// Release implements FileDescriptionImpl.Release. Release removes all
// watches and frees all resources for an inotify instance.
-func (i *Inotify) Release() {
+func (i *Inotify) Release(ctx context.Context) {
var ds []*Dentry
// We need to hold i.mu to avoid a race with concurrent calls to
@@ -144,7 +144,7 @@ func (i *Inotify) Release() {
i.mu.Unlock()
for _, d := range ds {
- d.OnZeroWatches()
+ d.OnZeroWatches(ctx)
}
}
@@ -350,7 +350,7 @@ func (i *Inotify) AddWatch(target *Dentry, mask uint32) (int32, error) {
// RmWatch looks up an inotify watch for the given 'wd' and configures the
// target to stop sending events to this inotify instance.
-func (i *Inotify) RmWatch(wd int32) error {
+func (i *Inotify) RmWatch(ctx context.Context, wd int32) error {
i.mu.Lock()
// Find the watch we were asked to removed.
@@ -374,7 +374,7 @@ func (i *Inotify) RmWatch(wd int32) error {
i.mu.Unlock()
if remaining == 0 {
- w.target.OnZeroWatches()
+ w.target.OnZeroWatches(ctx)
}
// Generate the event for the removal.
@@ -462,7 +462,7 @@ func (w *Watches) Remove(id uint64) {
// Notify queues a new event with watches in this set. Watches with
// IN_EXCL_UNLINK are skipped if the event is coming from a child that has been
// unlinked.
-func (w *Watches) Notify(name string, events, cookie uint32, et EventType, unlinked bool) {
+func (w *Watches) Notify(ctx context.Context, name string, events, cookie uint32, et EventType, unlinked bool) {
var hasExpired bool
w.mu.RLock()
for _, watch := range w.ws {
@@ -476,13 +476,13 @@ func (w *Watches) Notify(name string, events, cookie uint32, et EventType, unlin
w.mu.RUnlock()
if hasExpired {
- w.cleanupExpiredWatches()
+ w.cleanupExpiredWatches(ctx)
}
}
// This function is relatively expensive and should only be called where there
// are expired watches.
-func (w *Watches) cleanupExpiredWatches() {
+func (w *Watches) cleanupExpiredWatches(ctx context.Context) {
// Because of lock ordering, we cannot acquire Inotify.mu for each watch
// owner while holding w.mu. As a result, store expired watches locally
// before removing.
@@ -495,15 +495,15 @@ func (w *Watches) cleanupExpiredWatches() {
}
w.mu.RUnlock()
for _, watch := range toRemove {
- watch.owner.RmWatch(watch.wd)
+ watch.owner.RmWatch(ctx, watch.wd)
}
}
// HandleDeletion is called when the watch target is destroyed. Clear the
// watch set, detach watches from the inotify instances they belong to, and
// generate the appropriate events.
-func (w *Watches) HandleDeletion() {
- w.Notify("", linux.IN_DELETE_SELF, 0, InodeEvent, true /* unlinked */)
+func (w *Watches) HandleDeletion(ctx context.Context) {
+ w.Notify(ctx, "", linux.IN_DELETE_SELF, 0, InodeEvent, true /* unlinked */)
// As in Watches.Notify, we can't hold w.mu while acquiring Inotify.mu for
// the owner of each watch being deleted. Instead, atomically store the
@@ -744,12 +744,12 @@ func InotifyEventFromStatMask(mask uint32) uint32 {
// InotifyRemoveChild sends the appriopriate notifications to the watch sets of
// the child being removed and its parent. Note that unlike most pairs of
// parent/child notifications, the child is notified first in this case.
-func InotifyRemoveChild(self, parent *Watches, name string) {
+func InotifyRemoveChild(ctx context.Context, self, parent *Watches, name string) {
if self != nil {
- self.Notify("", linux.IN_ATTRIB, 0, InodeEvent, true /* unlinked */)
+ self.Notify(ctx, "", linux.IN_ATTRIB, 0, InodeEvent, true /* unlinked */)
}
if parent != nil {
- parent.Notify(name, linux.IN_DELETE, 0, InodeEvent, true /* unlinked */)
+ parent.Notify(ctx, name, linux.IN_DELETE, 0, InodeEvent, true /* unlinked */)
}
}
@@ -762,13 +762,13 @@ func InotifyRename(ctx context.Context, renamed, oldParent, newParent *Watches,
}
cookie := uniqueid.InotifyCookie(ctx)
if oldParent != nil {
- oldParent.Notify(oldName, dirEv|linux.IN_MOVED_FROM, cookie, InodeEvent, false /* unlinked */)
+ oldParent.Notify(ctx, oldName, dirEv|linux.IN_MOVED_FROM, cookie, InodeEvent, false /* unlinked */)
}
if newParent != nil {
- newParent.Notify(newName, dirEv|linux.IN_MOVED_TO, cookie, InodeEvent, false /* unlinked */)
+ newParent.Notify(ctx, newName, dirEv|linux.IN_MOVED_TO, cookie, InodeEvent, false /* unlinked */)
}
// Somewhat surprisingly, self move events do not have a cookie.
if renamed != nil {
- renamed.Notify("", linux.IN_MOVE_SELF, 0, InodeEvent, false /* unlinked */)
+ renamed.Notify(ctx, "", linux.IN_MOVE_SELF, 0, InodeEvent, false /* unlinked */)
}
}
diff --git a/pkg/sentry/vfs/mount.go b/pkg/sentry/vfs/mount.go
index 32f901bd8..d1d29d0cd 100644
--- a/pkg/sentry/vfs/mount.go
+++ b/pkg/sentry/vfs/mount.go
@@ -200,8 +200,8 @@ func (vfs *VirtualFilesystem) MountDisconnected(ctx context.Context, creds *auth
if err != nil {
return nil, err
}
- defer root.DecRef()
- defer fs.DecRef()
+ defer root.DecRef(ctx)
+ defer fs.DecRef(ctx)
return vfs.NewDisconnectedMount(fs, root, opts)
}
@@ -221,7 +221,7 @@ func (vfs *VirtualFilesystem) ConnectMountAt(ctx context.Context, creds *auth.Cr
if vd.dentry.dead {
vd.dentry.mu.Unlock()
vfs.mountMu.Unlock()
- vd.DecRef()
+ vd.DecRef(ctx)
return syserror.ENOENT
}
// vd might have been mounted over between vfs.GetDentryAt() and
@@ -243,7 +243,7 @@ func (vfs *VirtualFilesystem) ConnectMountAt(ctx context.Context, creds *auth.Cr
// This can't fail since we're holding vfs.mountMu.
nextmnt.root.IncRef()
vd.dentry.mu.Unlock()
- vd.DecRef()
+ vd.DecRef(ctx)
vd = VirtualDentry{
mount: nextmnt,
dentry: nextmnt.root,
@@ -268,7 +268,7 @@ func (vfs *VirtualFilesystem) MountAt(ctx context.Context, creds *auth.Credentia
if err != nil {
return err
}
- defer mnt.DecRef()
+ defer mnt.DecRef(ctx)
if err := vfs.ConnectMountAt(ctx, creds, mnt, target); err != nil {
return err
}
@@ -293,13 +293,13 @@ func (vfs *VirtualFilesystem) UmountAt(ctx context.Context, creds *auth.Credenti
if err != nil {
return err
}
- defer vd.DecRef()
+ defer vd.DecRef(ctx)
if vd.dentry != vd.mount.root {
return syserror.EINVAL
}
vfs.mountMu.Lock()
if mntns := MountNamespaceFromContext(ctx); mntns != nil {
- defer mntns.DecRef()
+ defer mntns.DecRef(ctx)
if mntns != vd.mount.ns {
vfs.mountMu.Unlock()
return syserror.EINVAL
@@ -335,10 +335,10 @@ func (vfs *VirtualFilesystem) UmountAt(ctx context.Context, creds *auth.Credenti
vfs.mounts.seq.EndWrite()
vfs.mountMu.Unlock()
for _, vd := range vdsToDecRef {
- vd.DecRef()
+ vd.DecRef(ctx)
}
for _, mnt := range mountsToDecRef {
- mnt.DecRef()
+ mnt.DecRef(ctx)
}
return nil
}
@@ -479,7 +479,7 @@ func (mnt *Mount) IncRef() {
}
// DecRef decrements mnt's reference count.
-func (mnt *Mount) DecRef() {
+func (mnt *Mount) DecRef(ctx context.Context) {
refs := atomic.AddInt64(&mnt.refs, -1)
if refs&^math.MinInt64 == 0 { // mask out MSB
var vd VirtualDentry
@@ -490,10 +490,10 @@ func (mnt *Mount) DecRef() {
mnt.vfs.mounts.seq.EndWrite()
mnt.vfs.mountMu.Unlock()
}
- mnt.root.DecRef()
- mnt.fs.DecRef()
+ mnt.root.DecRef(ctx)
+ mnt.fs.DecRef(ctx)
if vd.Ok() {
- vd.DecRef()
+ vd.DecRef(ctx)
}
}
}
@@ -506,7 +506,7 @@ func (mntns *MountNamespace) IncRef() {
}
// DecRef decrements mntns' reference count.
-func (mntns *MountNamespace) DecRef() {
+func (mntns *MountNamespace) DecRef(ctx context.Context) {
vfs := mntns.root.fs.VirtualFilesystem()
if refs := atomic.AddInt64(&mntns.refs, -1); refs == 0 {
vfs.mountMu.Lock()
@@ -517,10 +517,10 @@ func (mntns *MountNamespace) DecRef() {
vfs.mounts.seq.EndWrite()
vfs.mountMu.Unlock()
for _, vd := range vdsToDecRef {
- vd.DecRef()
+ vd.DecRef(ctx)
}
for _, mnt := range mountsToDecRef {
- mnt.DecRef()
+ mnt.DecRef(ctx)
}
} else if refs < 0 {
panic("MountNamespace.DecRef() called without holding a reference")
@@ -534,7 +534,7 @@ func (mntns *MountNamespace) DecRef() {
// getMountAt is analogous to Linux's fs/namei.c:follow_mount().
//
// Preconditions: References are held on mnt and d.
-func (vfs *VirtualFilesystem) getMountAt(mnt *Mount, d *Dentry) *Mount {
+func (vfs *VirtualFilesystem) getMountAt(ctx context.Context, mnt *Mount, d *Dentry) *Mount {
// The first mount is special-cased:
//
// - The caller is assumed to have checked d.isMounted() already. (This
@@ -565,7 +565,7 @@ retryFirst:
// Raced with umount.
continue
}
- mnt.DecRef()
+ mnt.DecRef(ctx)
mnt = next
d = next.root
}
@@ -578,7 +578,7 @@ retryFirst:
//
// Preconditions: References are held on mnt and root. vfsroot is not (mnt,
// mnt.root).
-func (vfs *VirtualFilesystem) getMountpointAt(mnt *Mount, vfsroot VirtualDentry) VirtualDentry {
+func (vfs *VirtualFilesystem) getMountpointAt(ctx context.Context, mnt *Mount, vfsroot VirtualDentry) VirtualDentry {
// The first mount is special-cased:
//
// - The caller must have already checked mnt against vfsroot.
@@ -602,12 +602,12 @@ retryFirst:
if !point.TryIncRef() {
// Since Mount holds a reference on Mount.key.point, this can only
// happen due to a racing change to Mount.key.
- parent.DecRef()
+ parent.DecRef(ctx)
goto retryFirst
}
if !vfs.mounts.seq.ReadOk(epoch) {
- point.DecRef()
- parent.DecRef()
+ point.DecRef(ctx)
+ parent.DecRef(ctx)
goto retryFirst
}
mnt = parent
@@ -635,16 +635,16 @@ retryFirst:
if !point.TryIncRef() {
// Since Mount holds a reference on Mount.key.point, this can
// only happen due to a racing change to Mount.key.
- parent.DecRef()
+ parent.DecRef(ctx)
goto retryNotFirst
}
if !vfs.mounts.seq.ReadOk(epoch) {
- point.DecRef()
- parent.DecRef()
+ point.DecRef(ctx)
+ parent.DecRef(ctx)
goto retryNotFirst
}
- d.DecRef()
- mnt.DecRef()
+ d.DecRef(ctx)
+ mnt.DecRef(ctx)
mnt = parent
d = point
}
diff --git a/pkg/sentry/vfs/pathname.go b/pkg/sentry/vfs/pathname.go
index cd78d66bc..e4da15009 100644
--- a/pkg/sentry/vfs/pathname.go
+++ b/pkg/sentry/vfs/pathname.go
@@ -47,7 +47,7 @@ func (vfs *VirtualFilesystem) PathnameWithDeleted(ctx context.Context, vfsroot,
haveRef := false
defer func() {
if haveRef {
- vd.DecRef()
+ vd.DecRef(ctx)
}
}()
@@ -64,12 +64,12 @@ loop:
// of FilesystemImpl.PrependPath() may return nil instead.
break loop
}
- nextVD := vfs.getMountpointAt(vd.mount, vfsroot)
+ nextVD := vfs.getMountpointAt(ctx, vd.mount, vfsroot)
if !nextVD.Ok() {
break loop
}
if haveRef {
- vd.DecRef()
+ vd.DecRef(ctx)
}
vd = nextVD
haveRef = true
@@ -101,7 +101,7 @@ func (vfs *VirtualFilesystem) PathnameReachable(ctx context.Context, vfsroot, vd
haveRef := false
defer func() {
if haveRef {
- vd.DecRef()
+ vd.DecRef(ctx)
}
}()
loop:
@@ -112,12 +112,12 @@ loop:
if vd.mount == vfsroot.mount && vd.mount.root == vfsroot.dentry {
break loop
}
- nextVD := vfs.getMountpointAt(vd.mount, vfsroot)
+ nextVD := vfs.getMountpointAt(ctx, vd.mount, vfsroot)
if !nextVD.Ok() {
return "", nil
}
if haveRef {
- vd.DecRef()
+ vd.DecRef(ctx)
}
vd = nextVD
haveRef = true
@@ -145,7 +145,7 @@ func (vfs *VirtualFilesystem) PathnameForGetcwd(ctx context.Context, vfsroot, vd
haveRef := false
defer func() {
if haveRef {
- vd.DecRef()
+ vd.DecRef(ctx)
}
}()
unreachable := false
@@ -157,13 +157,13 @@ loop:
if vd.mount == vfsroot.mount && vd.mount.root == vfsroot.dentry {
break loop
}
- nextVD := vfs.getMountpointAt(vd.mount, vfsroot)
+ nextVD := vfs.getMountpointAt(ctx, vd.mount, vfsroot)
if !nextVD.Ok() {
unreachable = true
break loop
}
if haveRef {
- vd.DecRef()
+ vd.DecRef(ctx)
}
vd = nextVD
haveRef = true
diff --git a/pkg/sentry/vfs/resolving_path.go b/pkg/sentry/vfs/resolving_path.go
index 9d047ff88..3304372d9 100644
--- a/pkg/sentry/vfs/resolving_path.go
+++ b/pkg/sentry/vfs/resolving_path.go
@@ -18,6 +18,7 @@ import (
"fmt"
"gvisor.dev/gvisor/pkg/abi/linux"
+ "gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/fspath"
"gvisor.dev/gvisor/pkg/sentry/kernel/auth"
"gvisor.dev/gvisor/pkg/sync"
@@ -136,31 +137,31 @@ func (vfs *VirtualFilesystem) getResolvingPath(creds *auth.Credentials, pop *Pat
return rp
}
-func (vfs *VirtualFilesystem) putResolvingPath(rp *ResolvingPath) {
+func (vfs *VirtualFilesystem) putResolvingPath(ctx context.Context, rp *ResolvingPath) {
rp.root = VirtualDentry{}
- rp.decRefStartAndMount()
+ rp.decRefStartAndMount(ctx)
rp.mount = nil
rp.start = nil
- rp.releaseErrorState()
+ rp.releaseErrorState(ctx)
resolvingPathPool.Put(rp)
}
-func (rp *ResolvingPath) decRefStartAndMount() {
+func (rp *ResolvingPath) decRefStartAndMount(ctx context.Context) {
if rp.flags&rpflagsHaveStartRef != 0 {
- rp.start.DecRef()
+ rp.start.DecRef(ctx)
}
if rp.flags&rpflagsHaveMountRef != 0 {
- rp.mount.DecRef()
+ rp.mount.DecRef(ctx)
}
}
-func (rp *ResolvingPath) releaseErrorState() {
+func (rp *ResolvingPath) releaseErrorState(ctx context.Context) {
if rp.nextStart != nil {
- rp.nextStart.DecRef()
+ rp.nextStart.DecRef(ctx)
rp.nextStart = nil
}
if rp.nextMount != nil {
- rp.nextMount.DecRef()
+ rp.nextMount.DecRef(ctx)
rp.nextMount = nil
}
}
@@ -236,13 +237,13 @@ func (rp *ResolvingPath) Advance() {
// Restart resets the stream of path components represented by rp to its state
// on entry to the current FilesystemImpl method.
-func (rp *ResolvingPath) Restart() {
+func (rp *ResolvingPath) Restart(ctx context.Context) {
rp.pit = rp.origParts[rp.numOrigParts-1]
rp.mustBeDir = rp.mustBeDirOrig
rp.symlinks = rp.symlinksOrig
rp.curPart = rp.numOrigParts - 1
copy(rp.parts[:], rp.origParts[:rp.numOrigParts])
- rp.releaseErrorState()
+ rp.releaseErrorState(ctx)
}
func (rp *ResolvingPath) relpathCommit() {
@@ -260,13 +261,13 @@ func (rp *ResolvingPath) relpathCommit() {
// Mount, CheckRoot returns (unspecified, non-nil error). Otherwise, path
// resolution should resolve d's parent normally, and CheckRoot returns (false,
// nil).
-func (rp *ResolvingPath) CheckRoot(d *Dentry) (bool, error) {
+func (rp *ResolvingPath) CheckRoot(ctx context.Context, d *Dentry) (bool, error) {
if d == rp.root.dentry && rp.mount == rp.root.mount {
// At contextual VFS root (due to e.g. chroot(2)).
return true, nil
} else if d == rp.mount.root {
// At mount root ...
- vd := rp.vfs.getMountpointAt(rp.mount, rp.root)
+ vd := rp.vfs.getMountpointAt(ctx, rp.mount, rp.root)
if vd.Ok() {
// ... of non-root mount.
rp.nextMount = vd.mount
@@ -283,11 +284,11 @@ func (rp *ResolvingPath) CheckRoot(d *Dentry) (bool, error) {
// to d. If d is a mount point, such that path resolution should switch to
// another Mount, CheckMount returns a non-nil error. Otherwise, CheckMount
// returns nil.
-func (rp *ResolvingPath) CheckMount(d *Dentry) error {
+func (rp *ResolvingPath) CheckMount(ctx context.Context, d *Dentry) error {
if !d.isMounted() {
return nil
}
- if mnt := rp.vfs.getMountAt(rp.mount, d); mnt != nil {
+ if mnt := rp.vfs.getMountAt(ctx, rp.mount, d); mnt != nil {
rp.nextMount = mnt
return resolveMountPointError{}
}
@@ -389,11 +390,11 @@ func (rp *ResolvingPath) HandleJump(target VirtualDentry) error {
return resolveMountRootOrJumpError{}
}
-func (rp *ResolvingPath) handleError(err error) bool {
+func (rp *ResolvingPath) handleError(ctx context.Context, err error) bool {
switch err.(type) {
case resolveMountRootOrJumpError:
// Switch to the new Mount. We hold references on the Mount and Dentry.
- rp.decRefStartAndMount()
+ rp.decRefStartAndMount(ctx)
rp.mount = rp.nextMount
rp.start = rp.nextStart
rp.flags |= rpflagsHaveMountRef | rpflagsHaveStartRef
@@ -412,7 +413,7 @@ func (rp *ResolvingPath) handleError(err error) bool {
case resolveMountPointError:
// Switch to the new Mount. We hold a reference on the Mount, but
// borrow the reference on the mount root from the Mount.
- rp.decRefStartAndMount()
+ rp.decRefStartAndMount(ctx)
rp.mount = rp.nextMount
rp.start = rp.nextMount.root
rp.flags = rp.flags&^rpflagsHaveStartRef | rpflagsHaveMountRef
@@ -423,12 +424,12 @@ func (rp *ResolvingPath) handleError(err error) bool {
// path.
rp.relpathCommit()
// Restart path resolution on the new Mount.
- rp.releaseErrorState()
+ rp.releaseErrorState(ctx)
return true
case resolveAbsSymlinkError:
// Switch to the new Mount. References are borrowed from rp.root.
- rp.decRefStartAndMount()
+ rp.decRefStartAndMount(ctx)
rp.mount = rp.root.mount
rp.start = rp.root.dentry
rp.flags &^= rpflagsHaveMountRef | rpflagsHaveStartRef
@@ -440,7 +441,7 @@ func (rp *ResolvingPath) handleError(err error) bool {
// path, including the symlink target we just prepended.
rp.relpathCommit()
// Restart path resolution on the new Mount.
- rp.releaseErrorState()
+ rp.releaseErrorState(ctx)
return true
default:
diff --git a/pkg/sentry/vfs/vfs.go b/pkg/sentry/vfs/vfs.go
index 522e27475..9c2420683 100644
--- a/pkg/sentry/vfs/vfs.go
+++ b/pkg/sentry/vfs/vfs.go
@@ -122,7 +122,7 @@ type VirtualFilesystem struct {
}
// Init initializes a new VirtualFilesystem with no mounts or FilesystemTypes.
-func (vfs *VirtualFilesystem) Init() error {
+func (vfs *VirtualFilesystem) Init(ctx context.Context) error {
if vfs.mountpoints != nil {
panic("VFS already initialized")
}
@@ -145,7 +145,7 @@ func (vfs *VirtualFilesystem) Init() error {
devMinor: anonfsDevMinor,
}
anonfs.vfsfs.Init(vfs, &anonFilesystemType{}, &anonfs)
- defer anonfs.vfsfs.DecRef()
+ defer anonfs.vfsfs.DecRef(ctx)
anonMount, err := vfs.NewDisconnectedMount(&anonfs.vfsfs, nil, &MountOptions{})
if err != nil {
// We should not be passing any MountOptions that would cause
@@ -192,11 +192,11 @@ func (vfs *VirtualFilesystem) AccessAt(ctx context.Context, creds *auth.Credenti
for {
err := rp.mount.fs.impl.AccessAt(ctx, rp, creds, ats)
if err == nil {
- vfs.putResolvingPath(rp)
+ vfs.putResolvingPath(ctx, rp)
return nil
}
- if !rp.handleError(err) {
- vfs.putResolvingPath(rp)
+ if !rp.handleError(ctx, err) {
+ vfs.putResolvingPath(ctx, rp)
return err
}
}
@@ -214,11 +214,11 @@ func (vfs *VirtualFilesystem) GetDentryAt(ctx context.Context, creds *auth.Crede
dentry: d,
}
rp.mount.IncRef()
- vfs.putResolvingPath(rp)
+ vfs.putResolvingPath(ctx, rp)
return vd, nil
}
- if !rp.handleError(err) {
- vfs.putResolvingPath(rp)
+ if !rp.handleError(ctx, err) {
+ vfs.putResolvingPath(ctx, rp)
return VirtualDentry{}, err
}
}
@@ -236,7 +236,7 @@ func (vfs *VirtualFilesystem) getParentDirAndName(ctx context.Context, creds *au
}
rp.mount.IncRef()
name := rp.Component()
- vfs.putResolvingPath(rp)
+ vfs.putResolvingPath(ctx, rp)
return parentVD, name, nil
}
if checkInvariants {
@@ -244,8 +244,8 @@ func (vfs *VirtualFilesystem) getParentDirAndName(ctx context.Context, creds *au
panic(fmt.Sprintf("%T.GetParentDentryAt() consumed all path components and returned %v", rp.mount.fs.impl, err))
}
}
- if !rp.handleError(err) {
- vfs.putResolvingPath(rp)
+ if !rp.handleError(ctx, err) {
+ vfs.putResolvingPath(ctx, rp)
return VirtualDentry{}, "", err
}
}
@@ -260,14 +260,14 @@ func (vfs *VirtualFilesystem) LinkAt(ctx context.Context, creds *auth.Credential
}
if !newpop.Path.Begin.Ok() {
- oldVD.DecRef()
+ oldVD.DecRef(ctx)
if newpop.Path.Absolute {
return syserror.EEXIST
}
return syserror.ENOENT
}
if newpop.FollowFinalSymlink {
- oldVD.DecRef()
+ oldVD.DecRef(ctx)
ctx.Warningf("VirtualFilesystem.LinkAt: file creation paths can't follow final symlink")
return syserror.EINVAL
}
@@ -276,8 +276,8 @@ func (vfs *VirtualFilesystem) LinkAt(ctx context.Context, creds *auth.Credential
for {
err := rp.mount.fs.impl.LinkAt(ctx, rp, oldVD)
if err == nil {
- vfs.putResolvingPath(rp)
- oldVD.DecRef()
+ vfs.putResolvingPath(ctx, rp)
+ oldVD.DecRef(ctx)
return nil
}
if checkInvariants {
@@ -285,9 +285,9 @@ func (vfs *VirtualFilesystem) LinkAt(ctx context.Context, creds *auth.Credential
panic(fmt.Sprintf("%T.LinkAt() consumed all path components and returned %v", rp.mount.fs.impl, err))
}
}
- if !rp.handleError(err) {
- vfs.putResolvingPath(rp)
- oldVD.DecRef()
+ if !rp.handleError(ctx, err) {
+ vfs.putResolvingPath(ctx, rp)
+ oldVD.DecRef(ctx)
return err
}
}
@@ -313,7 +313,7 @@ func (vfs *VirtualFilesystem) MkdirAt(ctx context.Context, creds *auth.Credentia
for {
err := rp.mount.fs.impl.MkdirAt(ctx, rp, *opts)
if err == nil {
- vfs.putResolvingPath(rp)
+ vfs.putResolvingPath(ctx, rp)
return nil
}
if checkInvariants {
@@ -321,8 +321,8 @@ func (vfs *VirtualFilesystem) MkdirAt(ctx context.Context, creds *auth.Credentia
panic(fmt.Sprintf("%T.MkdirAt() consumed all path components and returned %v", rp.mount.fs.impl, err))
}
}
- if !rp.handleError(err) {
- vfs.putResolvingPath(rp)
+ if !rp.handleError(ctx, err) {
+ vfs.putResolvingPath(ctx, rp)
return err
}
}
@@ -346,7 +346,7 @@ func (vfs *VirtualFilesystem) MknodAt(ctx context.Context, creds *auth.Credentia
for {
err := rp.mount.fs.impl.MknodAt(ctx, rp, *opts)
if err == nil {
- vfs.putResolvingPath(rp)
+ vfs.putResolvingPath(ctx, rp)
return nil
}
if checkInvariants {
@@ -354,8 +354,8 @@ func (vfs *VirtualFilesystem) MknodAt(ctx context.Context, creds *auth.Credentia
panic(fmt.Sprintf("%T.MknodAt() consumed all path components and returned %v", rp.mount.fs.impl, err))
}
}
- if !rp.handleError(err) {
- vfs.putResolvingPath(rp)
+ if !rp.handleError(ctx, err) {
+ vfs.putResolvingPath(ctx, rp)
return err
}
}
@@ -408,31 +408,31 @@ func (vfs *VirtualFilesystem) OpenAt(ctx context.Context, creds *auth.Credential
for {
fd, err := rp.mount.fs.impl.OpenAt(ctx, rp, *opts)
if err == nil {
- vfs.putResolvingPath(rp)
+ vfs.putResolvingPath(ctx, rp)
if opts.FileExec {
if fd.Mount().Flags.NoExec {
- fd.DecRef()
+ fd.DecRef(ctx)
return nil, syserror.EACCES
}
// Only a regular file can be executed.
stat, err := fd.Stat(ctx, StatOptions{Mask: linux.STATX_TYPE})
if err != nil {
- fd.DecRef()
+ fd.DecRef(ctx)
return nil, err
}
if stat.Mask&linux.STATX_TYPE == 0 || stat.Mode&linux.S_IFMT != linux.S_IFREG {
- fd.DecRef()
+ fd.DecRef(ctx)
return nil, syserror.EACCES
}
}
- fd.Dentry().InotifyWithParent(linux.IN_OPEN, 0, PathEvent)
+ fd.Dentry().InotifyWithParent(ctx, linux.IN_OPEN, 0, PathEvent)
return fd, nil
}
- if !rp.handleError(err) {
- vfs.putResolvingPath(rp)
+ if !rp.handleError(ctx, err) {
+ vfs.putResolvingPath(ctx, rp)
return nil, err
}
}
@@ -444,11 +444,11 @@ func (vfs *VirtualFilesystem) ReadlinkAt(ctx context.Context, creds *auth.Creden
for {
target, err := rp.mount.fs.impl.ReadlinkAt(ctx, rp)
if err == nil {
- vfs.putResolvingPath(rp)
+ vfs.putResolvingPath(ctx, rp)
return target, nil
}
- if !rp.handleError(err) {
- vfs.putResolvingPath(rp)
+ if !rp.handleError(ctx, err) {
+ vfs.putResolvingPath(ctx, rp)
return "", err
}
}
@@ -472,19 +472,19 @@ func (vfs *VirtualFilesystem) RenameAt(ctx context.Context, creds *auth.Credenti
return err
}
if oldName == "." || oldName == ".." {
- oldParentVD.DecRef()
+ oldParentVD.DecRef(ctx)
return syserror.EBUSY
}
if !newpop.Path.Begin.Ok() {
- oldParentVD.DecRef()
+ oldParentVD.DecRef(ctx)
if newpop.Path.Absolute {
return syserror.EBUSY
}
return syserror.ENOENT
}
if newpop.FollowFinalSymlink {
- oldParentVD.DecRef()
+ oldParentVD.DecRef(ctx)
ctx.Warningf("VirtualFilesystem.RenameAt: destination path can't follow final symlink")
return syserror.EINVAL
}
@@ -497,8 +497,8 @@ func (vfs *VirtualFilesystem) RenameAt(ctx context.Context, creds *auth.Credenti
for {
err := rp.mount.fs.impl.RenameAt(ctx, rp, oldParentVD, oldName, renameOpts)
if err == nil {
- vfs.putResolvingPath(rp)
- oldParentVD.DecRef()
+ vfs.putResolvingPath(ctx, rp)
+ oldParentVD.DecRef(ctx)
return nil
}
if checkInvariants {
@@ -506,9 +506,9 @@ func (vfs *VirtualFilesystem) RenameAt(ctx context.Context, creds *auth.Credenti
panic(fmt.Sprintf("%T.RenameAt() consumed all path components and returned %v", rp.mount.fs.impl, err))
}
}
- if !rp.handleError(err) {
- vfs.putResolvingPath(rp)
- oldParentVD.DecRef()
+ if !rp.handleError(ctx, err) {
+ vfs.putResolvingPath(ctx, rp)
+ oldParentVD.DecRef(ctx)
return err
}
}
@@ -531,7 +531,7 @@ func (vfs *VirtualFilesystem) RmdirAt(ctx context.Context, creds *auth.Credentia
for {
err := rp.mount.fs.impl.RmdirAt(ctx, rp)
if err == nil {
- vfs.putResolvingPath(rp)
+ vfs.putResolvingPath(ctx, rp)
return nil
}
if checkInvariants {
@@ -539,8 +539,8 @@ func (vfs *VirtualFilesystem) RmdirAt(ctx context.Context, creds *auth.Credentia
panic(fmt.Sprintf("%T.RmdirAt() consumed all path components and returned %v", rp.mount.fs.impl, err))
}
}
- if !rp.handleError(err) {
- vfs.putResolvingPath(rp)
+ if !rp.handleError(ctx, err) {
+ vfs.putResolvingPath(ctx, rp)
return err
}
}
@@ -552,11 +552,11 @@ func (vfs *VirtualFilesystem) SetStatAt(ctx context.Context, creds *auth.Credent
for {
err := rp.mount.fs.impl.SetStatAt(ctx, rp, *opts)
if err == nil {
- vfs.putResolvingPath(rp)
+ vfs.putResolvingPath(ctx, rp)
return nil
}
- if !rp.handleError(err) {
- vfs.putResolvingPath(rp)
+ if !rp.handleError(ctx, err) {
+ vfs.putResolvingPath(ctx, rp)
return err
}
}
@@ -568,11 +568,11 @@ func (vfs *VirtualFilesystem) StatAt(ctx context.Context, creds *auth.Credential
for {
stat, err := rp.mount.fs.impl.StatAt(ctx, rp, *opts)
if err == nil {
- vfs.putResolvingPath(rp)
+ vfs.putResolvingPath(ctx, rp)
return stat, nil
}
- if !rp.handleError(err) {
- vfs.putResolvingPath(rp)
+ if !rp.handleError(ctx, err) {
+ vfs.putResolvingPath(ctx, rp)
return linux.Statx{}, err
}
}
@@ -585,11 +585,11 @@ func (vfs *VirtualFilesystem) StatFSAt(ctx context.Context, creds *auth.Credenti
for {
statfs, err := rp.mount.fs.impl.StatFSAt(ctx, rp)
if err == nil {
- vfs.putResolvingPath(rp)
+ vfs.putResolvingPath(ctx, rp)
return statfs, nil
}
- if !rp.handleError(err) {
- vfs.putResolvingPath(rp)
+ if !rp.handleError(ctx, err) {
+ vfs.putResolvingPath(ctx, rp)
return linux.Statfs{}, err
}
}
@@ -612,7 +612,7 @@ func (vfs *VirtualFilesystem) SymlinkAt(ctx context.Context, creds *auth.Credent
for {
err := rp.mount.fs.impl.SymlinkAt(ctx, rp, target)
if err == nil {
- vfs.putResolvingPath(rp)
+ vfs.putResolvingPath(ctx, rp)
return nil
}
if checkInvariants {
@@ -620,8 +620,8 @@ func (vfs *VirtualFilesystem) SymlinkAt(ctx context.Context, creds *auth.Credent
panic(fmt.Sprintf("%T.SymlinkAt() consumed all path components and returned %v", rp.mount.fs.impl, err))
}
}
- if !rp.handleError(err) {
- vfs.putResolvingPath(rp)
+ if !rp.handleError(ctx, err) {
+ vfs.putResolvingPath(ctx, rp)
return err
}
}
@@ -644,7 +644,7 @@ func (vfs *VirtualFilesystem) UnlinkAt(ctx context.Context, creds *auth.Credenti
for {
err := rp.mount.fs.impl.UnlinkAt(ctx, rp)
if err == nil {
- vfs.putResolvingPath(rp)
+ vfs.putResolvingPath(ctx, rp)
return nil
}
if checkInvariants {
@@ -652,8 +652,8 @@ func (vfs *VirtualFilesystem) UnlinkAt(ctx context.Context, creds *auth.Credenti
panic(fmt.Sprintf("%T.UnlinkAt() consumed all path components and returned %v", rp.mount.fs.impl, err))
}
}
- if !rp.handleError(err) {
- vfs.putResolvingPath(rp)
+ if !rp.handleError(ctx, err) {
+ vfs.putResolvingPath(ctx, rp)
return err
}
}
@@ -671,7 +671,7 @@ func (vfs *VirtualFilesystem) BoundEndpointAt(ctx context.Context, creds *auth.C
for {
bep, err := rp.mount.fs.impl.BoundEndpointAt(ctx, rp, *opts)
if err == nil {
- vfs.putResolvingPath(rp)
+ vfs.putResolvingPath(ctx, rp)
return bep, nil
}
if checkInvariants {
@@ -679,8 +679,8 @@ func (vfs *VirtualFilesystem) BoundEndpointAt(ctx context.Context, creds *auth.C
panic(fmt.Sprintf("%T.BoundEndpointAt() consumed all path components and returned %v", rp.mount.fs.impl, err))
}
}
- if !rp.handleError(err) {
- vfs.putResolvingPath(rp)
+ if !rp.handleError(ctx, err) {
+ vfs.putResolvingPath(ctx, rp)
return nil, err
}
}
@@ -693,7 +693,7 @@ func (vfs *VirtualFilesystem) ListxattrAt(ctx context.Context, creds *auth.Crede
for {
names, err := rp.mount.fs.impl.ListxattrAt(ctx, rp, size)
if err == nil {
- vfs.putResolvingPath(rp)
+ vfs.putResolvingPath(ctx, rp)
return names, nil
}
if err == syserror.ENOTSUP {
@@ -701,11 +701,11 @@ func (vfs *VirtualFilesystem) ListxattrAt(ctx context.Context, creds *auth.Crede
// fs/xattr.c:vfs_listxattr() falls back to allowing the security
// subsystem to return security extended attributes, which by
// default don't exist.
- vfs.putResolvingPath(rp)
+ vfs.putResolvingPath(ctx, rp)
return nil, nil
}
- if !rp.handleError(err) {
- vfs.putResolvingPath(rp)
+ if !rp.handleError(ctx, err) {
+ vfs.putResolvingPath(ctx, rp)
return nil, err
}
}
@@ -718,11 +718,11 @@ func (vfs *VirtualFilesystem) GetxattrAt(ctx context.Context, creds *auth.Creden
for {
val, err := rp.mount.fs.impl.GetxattrAt(ctx, rp, *opts)
if err == nil {
- vfs.putResolvingPath(rp)
+ vfs.putResolvingPath(ctx, rp)
return val, nil
}
- if !rp.handleError(err) {
- vfs.putResolvingPath(rp)
+ if !rp.handleError(ctx, err) {
+ vfs.putResolvingPath(ctx, rp)
return "", err
}
}
@@ -735,11 +735,11 @@ func (vfs *VirtualFilesystem) SetxattrAt(ctx context.Context, creds *auth.Creden
for {
err := rp.mount.fs.impl.SetxattrAt(ctx, rp, *opts)
if err == nil {
- vfs.putResolvingPath(rp)
+ vfs.putResolvingPath(ctx, rp)
return nil
}
- if !rp.handleError(err) {
- vfs.putResolvingPath(rp)
+ if !rp.handleError(ctx, err) {
+ vfs.putResolvingPath(ctx, rp)
return err
}
}
@@ -751,11 +751,11 @@ func (vfs *VirtualFilesystem) RemovexattrAt(ctx context.Context, creds *auth.Cre
for {
err := rp.mount.fs.impl.RemovexattrAt(ctx, rp, name)
if err == nil {
- vfs.putResolvingPath(rp)
+ vfs.putResolvingPath(ctx, rp)
return nil
}
- if !rp.handleError(err) {
- vfs.putResolvingPath(rp)
+ if !rp.handleError(ctx, err) {
+ vfs.putResolvingPath(ctx, rp)
return err
}
}
@@ -777,7 +777,7 @@ func (vfs *VirtualFilesystem) SyncAllFilesystems(ctx context.Context) error {
if err := fs.impl.Sync(ctx); err != nil && retErr == nil {
retErr = err
}
- fs.DecRef()
+ fs.DecRef(ctx)
}
return retErr
}
@@ -831,9 +831,9 @@ func (vd VirtualDentry) IncRef() {
// DecRef decrements the reference counts on the Mount and Dentry represented
// by vd.
-func (vd VirtualDentry) DecRef() {
- vd.dentry.DecRef()
- vd.mount.DecRef()
+func (vd VirtualDentry) DecRef(ctx context.Context) {
+ vd.dentry.DecRef(ctx)
+ vd.mount.DecRef(ctx)
}
// Mount returns the Mount associated with vd. It does not take a reference on