diff options
Diffstat (limited to 'pkg/sentry')
29 files changed, 40 insertions, 61 deletions
diff --git a/pkg/sentry/fsimpl/devpts/root_inode_refs.go b/pkg/sentry/fsimpl/devpts/root_inode_refs.go index 068ee2f20..b860819f0 100644 --- a/pkg/sentry/fsimpl/devpts/root_inode_refs.go +++ b/pkg/sentry/fsimpl/devpts/root_inode_refs.go @@ -1,12 +1,12 @@ package devpts import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/fuse/inode_refs.go b/pkg/sentry/fsimpl/fuse/inode_refs.go index 5d1de6067..646042846 100644 --- a/pkg/sentry/fsimpl/fuse/inode_refs.go +++ b/pkg/sentry/fsimpl/fuse/inode_refs.go @@ -1,12 +1,12 @@ package fuse import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/gofer/gofer.go b/pkg/sentry/fsimpl/gofer/gofer.go index fa4e19113..0e21c31a4 100644 --- a/pkg/sentry/fsimpl/gofer/gofer.go +++ b/pkg/sentry/fsimpl/gofer/gofer.go @@ -195,11 +195,7 @@ const ( // and consistent with Linux's semantics (in particular, it is not always // possible for clients to set arbitrary atimes and mtimes depending on the // remote filesystem implementation, and never possible for clients to set - // arbitrary ctimes.) If a dentry containing a client-defined atime or - // mtime is evicted from cache, client timestamps will be sent to the - // remote filesystem on a best-effort basis to attempt to ensure that - // timestamps will be preserved when another dentry representing the same - // file is instantiated. + // arbitrary ctimes.) InteropModeExclusive InteropMode = iota // InteropModeWritethrough is appropriate when there are read-only users of @@ -1315,32 +1311,15 @@ func (d *dentry) destroyLocked(ctx context.Context) { d.handleMu.Unlock() if !d.file.isNil() { - valid := p9.SetAttrMask{} - attr := p9.SetAttr{} - if !d.isDeleted() { - // Write dirty timestamps back to the remote filesystem. - if atomic.LoadUint32(&d.atimeDirty) != 0 { - valid.ATime = true - valid.ATimeNotSystemTime = true - atime := atomic.LoadInt64(&d.atime) - attr.ATimeSeconds = uint64(atime / 1e9) - attr.ATimeNanoSeconds = uint64(atime % 1e9) - } - if atomic.LoadUint32(&d.mtimeDirty) != 0 { - valid.MTime = true - valid.MTimeNotSystemTime = true - mtime := atomic.LoadInt64(&d.mtime) - attr.MTimeSeconds = uint64(mtime / 1e9) - attr.MTimeNanoSeconds = uint64(mtime % 1e9) - } - } - - // Check if attributes need to be changed before closing the file. - if valid.ATime || valid.MTime { - if err := d.file.setAttrClose(ctx, valid, attr); err != nil { - log.Warningf("gofer.dentry.destroyLocked: failed to close file with write dirty timestamps: %v", err) - } - } else if err := d.file.close(ctx); err != nil { + // Note that it's possible that d.atimeDirty or d.mtimeDirty are true, + // i.e. client and server timestamps may differ (because e.g. a client + // write was serviced by the page cache, and only written back to the + // remote file later). Ideally, we'd write client timestamps back to + // the remote filesystem so that timestamps for a new dentry + // instantiated for the same file would remain coherent. Unfortunately, + // this turns out to be too expensive in many cases, so for now we + // don't do this. + if err := d.file.close(ctx); err != nil { log.Warningf("gofer.dentry.destroyLocked: failed to close file: %v", err) } d.file = p9file{} diff --git a/pkg/sentry/fsimpl/host/connected_endpoint_refs.go b/pkg/sentry/fsimpl/host/connected_endpoint_refs.go index abf4a9082..670166c76 100644 --- a/pkg/sentry/fsimpl/host/connected_endpoint_refs.go +++ b/pkg/sentry/fsimpl/host/connected_endpoint_refs.go @@ -1,12 +1,12 @@ package host import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/host/inode_refs.go b/pkg/sentry/fsimpl/host/inode_refs.go index 75b9f49e2..49c57c113 100644 --- a/pkg/sentry/fsimpl/host/inode_refs.go +++ b/pkg/sentry/fsimpl/host/inode_refs.go @@ -1,12 +1,12 @@ package host import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/kernfs/dentry_refs.go b/pkg/sentry/fsimpl/kernfs/dentry_refs.go index b7125caee..0269851c9 100644 --- a/pkg/sentry/fsimpl/kernfs/dentry_refs.go +++ b/pkg/sentry/fsimpl/kernfs/dentry_refs.go @@ -1,12 +1,12 @@ package kernfs import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/kernfs/static_directory_refs.go b/pkg/sentry/fsimpl/kernfs/static_directory_refs.go index 0ff013c97..866620ef9 100644 --- a/pkg/sentry/fsimpl/kernfs/static_directory_refs.go +++ b/pkg/sentry/fsimpl/kernfs/static_directory_refs.go @@ -1,12 +1,12 @@ package kernfs import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/proc/fd_dir_inode_refs.go b/pkg/sentry/fsimpl/proc/fd_dir_inode_refs.go index 454862d98..84c03e6cd 100644 --- a/pkg/sentry/fsimpl/proc/fd_dir_inode_refs.go +++ b/pkg/sentry/fsimpl/proc/fd_dir_inode_refs.go @@ -1,12 +1,12 @@ package proc import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/proc/fd_info_dir_inode_refs.go b/pkg/sentry/fsimpl/proc/fd_info_dir_inode_refs.go index d2169be5b..5b3c7cd1c 100644 --- a/pkg/sentry/fsimpl/proc/fd_info_dir_inode_refs.go +++ b/pkg/sentry/fsimpl/proc/fd_info_dir_inode_refs.go @@ -1,12 +1,12 @@ package proc import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/proc/subtasks_inode_refs.go b/pkg/sentry/fsimpl/proc/subtasks_inode_refs.go index 9b50f632c..3091deb89 100644 --- a/pkg/sentry/fsimpl/proc/subtasks_inode_refs.go +++ b/pkg/sentry/fsimpl/proc/subtasks_inode_refs.go @@ -1,12 +1,12 @@ package proc import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/proc/task_inode_refs.go b/pkg/sentry/fsimpl/proc/task_inode_refs.go index c29272f9b..5833527c5 100644 --- a/pkg/sentry/fsimpl/proc/task_inode_refs.go +++ b/pkg/sentry/fsimpl/proc/task_inode_refs.go @@ -1,12 +1,12 @@ package proc import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/proc/tasks_inode_refs.go b/pkg/sentry/fsimpl/proc/tasks_inode_refs.go index 7e0b70f6c..0961dd629 100644 --- a/pkg/sentry/fsimpl/proc/tasks_inode_refs.go +++ b/pkg/sentry/fsimpl/proc/tasks_inode_refs.go @@ -1,12 +1,12 @@ package proc import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/sys/dir_refs.go b/pkg/sentry/fsimpl/sys/dir_refs.go index d42edb20e..718d542eb 100644 --- a/pkg/sentry/fsimpl/sys/dir_refs.go +++ b/pkg/sentry/fsimpl/sys/dir_refs.go @@ -1,12 +1,12 @@ package sys import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/fsimpl/tmpfs/inode_refs.go b/pkg/sentry/fsimpl/tmpfs/inode_refs.go index 4f4037adb..5ec208d9e 100644 --- a/pkg/sentry/fsimpl/tmpfs/inode_refs.go +++ b/pkg/sentry/fsimpl/tmpfs/inode_refs.go @@ -1,12 +1,12 @@ package tmpfs import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/kernel/fd_table_refs.go b/pkg/sentry/kernel/fd_table_refs.go index dc7f4e246..9330e37e4 100644 --- a/pkg/sentry/kernel/fd_table_refs.go +++ b/pkg/sentry/kernel/fd_table_refs.go @@ -1,12 +1,12 @@ package kernel import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/kernel/fs_context_refs.go b/pkg/sentry/kernel/fs_context_refs.go index be045c862..e2280f400 100644 --- a/pkg/sentry/kernel/fs_context_refs.go +++ b/pkg/sentry/kernel/fs_context_refs.go @@ -1,12 +1,12 @@ package kernel import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/kernel/process_group_refs.go b/pkg/sentry/kernel/process_group_refs.go index 4622687b1..832a99d66 100644 --- a/pkg/sentry/kernel/process_group_refs.go +++ b/pkg/sentry/kernel/process_group_refs.go @@ -1,12 +1,12 @@ package kernel import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/kernel/seqatomic_taskgoroutineschedinfo_unsafe.go b/pkg/sentry/kernel/seqatomic_taskgoroutineschedinfo_unsafe.go index 90148bbb2..8a2418c41 100644 --- a/pkg/sentry/kernel/seqatomic_taskgoroutineschedinfo_unsafe.go +++ b/pkg/sentry/kernel/seqatomic_taskgoroutineschedinfo_unsafe.go @@ -1,12 +1,12 @@ package kernel import ( - "fmt" - "reflect" "strings" "unsafe" + "fmt" "gvisor.dev/gvisor/pkg/sync" + "reflect" ) // SeqAtomicLoad returns a copy of *ptr, ensuring that the read does not race diff --git a/pkg/sentry/kernel/session_refs.go b/pkg/sentry/kernel/session_refs.go index 89e43ae6b..850f56d3a 100644 --- a/pkg/sentry/kernel/session_refs.go +++ b/pkg/sentry/kernel/session_refs.go @@ -1,12 +1,12 @@ package kernel import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/kernel/shm/shm_refs.go b/pkg/sentry/kernel/shm/shm_refs.go index 2b4f608c7..35f74eb6c 100644 --- a/pkg/sentry/kernel/shm/shm_refs.go +++ b/pkg/sentry/kernel/shm/shm_refs.go @@ -1,12 +1,12 @@ package shm import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/mm/aio_mappable_refs.go b/pkg/sentry/mm/aio_mappable_refs.go index ac7690d3f..d4f278400 100644 --- a/pkg/sentry/mm/aio_mappable_refs.go +++ b/pkg/sentry/mm/aio_mappable_refs.go @@ -1,12 +1,12 @@ package mm import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/mm/special_mappable_refs.go b/pkg/sentry/mm/special_mappable_refs.go index b304fd2ef..2a348bacf 100644 --- a/pkg/sentry/mm/special_mappable_refs.go +++ b/pkg/sentry/mm/special_mappable_refs.go @@ -1,12 +1,12 @@ package mm import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/platform/ring0/defs_impl_arm64.go b/pkg/sentry/platform/ring0/defs_impl_arm64.go index 424b66f76..8ebfbfdb6 100644 --- a/pkg/sentry/platform/ring0/defs_impl_arm64.go +++ b/pkg/sentry/platform/ring0/defs_impl_arm64.go @@ -1,10 +1,10 @@ package ring0 import ( - "gvisor.dev/gvisor/pkg/sentry/arch" "gvisor.dev/gvisor/pkg/sentry/platform/ring0/pagetables" "fmt" + "gvisor.dev/gvisor/pkg/sentry/arch" "gvisor.dev/gvisor/pkg/usermem" "io" "reflect" diff --git a/pkg/sentry/socket/unix/socket_refs.go b/pkg/sentry/socket/unix/socket_refs.go index 69fa54964..a0e5d1393 100644 --- a/pkg/sentry/socket/unix/socket_refs.go +++ b/pkg/sentry/socket/unix/socket_refs.go @@ -1,12 +1,12 @@ package unix import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/socket/unix/transport/queue_refs.go b/pkg/sentry/socket/unix/transport/queue_refs.go index a154c8334..21d43fc24 100644 --- a/pkg/sentry/socket/unix/transport/queue_refs.go +++ b/pkg/sentry/socket/unix/transport/queue_refs.go @@ -1,12 +1,12 @@ package transport import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/time/seqatomic_parameters_unsafe.go b/pkg/sentry/time/seqatomic_parameters_unsafe.go index 2cb001080..14978ed91 100644 --- a/pkg/sentry/time/seqatomic_parameters_unsafe.go +++ b/pkg/sentry/time/seqatomic_parameters_unsafe.go @@ -1,12 +1,12 @@ package time import ( - "fmt" - "reflect" "strings" "unsafe" + "fmt" "gvisor.dev/gvisor/pkg/sync" + "reflect" ) // SeqAtomicLoad returns a copy of *ptr, ensuring that the read does not race diff --git a/pkg/sentry/vfs/file_description_refs.go b/pkg/sentry/vfs/file_description_refs.go index 3953d2396..ebc089b4c 100644 --- a/pkg/sentry/vfs/file_description_refs.go +++ b/pkg/sentry/vfs/file_description_refs.go @@ -1,12 +1,12 @@ package vfs import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/vfs/filesystem_refs.go b/pkg/sentry/vfs/filesystem_refs.go index c6a390430..32f21c044 100644 --- a/pkg/sentry/vfs/filesystem_refs.go +++ b/pkg/sentry/vfs/filesystem_refs.go @@ -1,12 +1,12 @@ package vfs import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so diff --git a/pkg/sentry/vfs/mount_namespace_refs.go b/pkg/sentry/vfs/mount_namespace_refs.go index ed126cc5e..2c920ac41 100644 --- a/pkg/sentry/vfs/mount_namespace_refs.go +++ b/pkg/sentry/vfs/mount_namespace_refs.go @@ -1,12 +1,12 @@ package vfs import ( - "runtime" "sync/atomic" "fmt" "gvisor.dev/gvisor/pkg/log" refs_vfs1 "gvisor.dev/gvisor/pkg/refs" + "runtime" ) // ownerType is used to customize logging. Note that we use a pointer to T so |