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-rw-r--r--pkg/sentry/fsimpl/devpts/BUILD2
-rw-r--r--pkg/sentry/fsimpl/devpts/devpts.go34
-rw-r--r--pkg/sentry/fsimpl/devpts/devpts_test.go4
-rw-r--r--pkg/sentry/fsimpl/devpts/line_discipline.go22
-rw-r--r--pkg/sentry/fsimpl/devpts/master.go4
-rw-r--r--pkg/sentry/fsimpl/devpts/queue.go2
-rw-r--r--pkg/sentry/fsimpl/devpts/replica.go (renamed from pkg/sentry/fsimpl/devpts/slave.go)56
-rw-r--r--pkg/sentry/fsimpl/devpts/terminal.go16
8 files changed, 70 insertions, 70 deletions
diff --git a/pkg/sentry/fsimpl/devpts/BUILD b/pkg/sentry/fsimpl/devpts/BUILD
index 3e8c5e3fd..ac48ab34b 100644
--- a/pkg/sentry/fsimpl/devpts/BUILD
+++ b/pkg/sentry/fsimpl/devpts/BUILD
@@ -21,8 +21,8 @@ go_library(
"line_discipline.go",
"master.go",
"queue.go",
+ "replica.go",
"root_inode_refs.go",
- "slave.go",
"terminal.go",
],
visibility = ["//pkg/sentry:internal"],
diff --git a/pkg/sentry/fsimpl/devpts/devpts.go b/pkg/sentry/fsimpl/devpts/devpts.go
index 57580f4d4..dcf1ee25b 100644
--- a/pkg/sentry/fsimpl/devpts/devpts.go
+++ b/pkg/sentry/fsimpl/devpts/devpts.go
@@ -79,7 +79,7 @@ func (fstype FilesystemType) newFilesystem(vfsObj *vfs.VirtualFilesystem, creds
// Construct the root directory. This is always inode id 1.
root := &rootInode{
- slaves: make(map[uint32]*slaveInode),
+ replicas: make(map[uint32]*replicaInode),
}
root.InodeAttrs.Init(creds, linux.UNNAMED_MAJOR, devMinor, 1, linux.ModeDirectory|0555)
root.OrderedChildren.Init(kernfs.OrderedChildrenOptions{})
@@ -133,8 +133,8 @@ type rootInode struct {
// mu protects the fields below.
mu sync.Mutex
- // slaves maps pty ids to slave inodes.
- slaves map[uint32]*slaveInode
+ // replicas maps pty ids to replica inodes.
+ replicas map[uint32]*replicaInode
// nextIdx is the next pty index to use. Must be accessed atomically.
//
@@ -154,22 +154,22 @@ func (i *rootInode) allocateTerminal(creds *auth.Credentials) (*Terminal, error)
idx := i.nextIdx
i.nextIdx++
- // Sanity check that slave with idx does not exist.
- if _, ok := i.slaves[idx]; ok {
+ // Sanity check that replica with idx does not exist.
+ if _, ok := i.replicas[idx]; ok {
panic(fmt.Sprintf("pty index collision; index %d already exists", idx))
}
- // Create the new terminal and slave.
+ // Create the new terminal and replica.
t := newTerminal(idx)
- slave := &slaveInode{
+ replica := &replicaInode{
root: i,
t: t,
}
// Linux always uses pty index + 3 as the inode id. See
// fs/devpts/inode.c:devpts_pty_new().
- slave.InodeAttrs.Init(creds, i.InodeAttrs.DevMajor(), i.InodeAttrs.DevMinor(), uint64(idx+3), linux.ModeCharacterDevice|0600)
- slave.dentry.Init(slave)
- i.slaves[idx] = slave
+ replica.InodeAttrs.Init(creds, i.InodeAttrs.DevMajor(), i.InodeAttrs.DevMinor(), uint64(idx+3), linux.ModeCharacterDevice|0600)
+ replica.dentry.Init(replica)
+ i.replicas[idx] = replica
return t, nil
}
@@ -179,11 +179,11 @@ func (i *rootInode) masterClose(t *Terminal) {
i.mu.Lock()
defer i.mu.Unlock()
- // Sanity check that slave with idx exists.
- if _, ok := i.slaves[t.n]; !ok {
+ // Sanity check that replica with idx exists.
+ if _, ok := i.replicas[t.n]; !ok {
panic(fmt.Sprintf("pty with index %d does not exist", t.n))
}
- delete(i.slaves, t.n)
+ delete(i.replicas, t.n)
}
// Open implements kernfs.Inode.Open.
@@ -205,7 +205,7 @@ func (i *rootInode) Lookup(ctx context.Context, name string) (*vfs.Dentry, error
}
i.mu.Lock()
defer i.mu.Unlock()
- if si, ok := i.slaves[uint32(idx)]; ok {
+ if si, ok := i.replicas[uint32(idx)]; ok {
si.dentry.IncRef()
return si.dentry.VFSDentry(), nil
@@ -217,8 +217,8 @@ func (i *rootInode) Lookup(ctx context.Context, name string) (*vfs.Dentry, error
func (i *rootInode) IterDirents(ctx context.Context, cb vfs.IterDirentsCallback, offset, relOffset int64) (int64, error) {
i.mu.Lock()
defer i.mu.Unlock()
- ids := make([]int, 0, len(i.slaves))
- for id := range i.slaves {
+ ids := make([]int, 0, len(i.replicas))
+ for id := range i.replicas {
ids = append(ids, int(id))
}
sort.Ints(ids)
@@ -226,7 +226,7 @@ func (i *rootInode) IterDirents(ctx context.Context, cb vfs.IterDirentsCallback,
dirent := vfs.Dirent{
Name: strconv.FormatUint(uint64(id), 10),
Type: linux.DT_CHR,
- Ino: i.slaves[uint32(id)].InodeAttrs.Ino(),
+ Ino: i.replicas[uint32(id)].InodeAttrs.Ino(),
NextOff: offset + 1,
}
if err := cb.Handle(dirent); err != nil {
diff --git a/pkg/sentry/fsimpl/devpts/devpts_test.go b/pkg/sentry/fsimpl/devpts/devpts_test.go
index b7c149047..448390cfe 100644
--- a/pkg/sentry/fsimpl/devpts/devpts_test.go
+++ b/pkg/sentry/fsimpl/devpts/devpts_test.go
@@ -22,8 +22,8 @@ import (
"gvisor.dev/gvisor/pkg/usermem"
)
-func TestSimpleMasterToSlave(t *testing.T) {
- ld := newLineDiscipline(linux.DefaultSlaveTermios)
+func TestSimpleMasterToReplica(t *testing.T) {
+ ld := newLineDiscipline(linux.DefaultReplicaTermios)
ctx := contexttest.Context(t)
inBytes := []byte("hello, tty\n")
src := usermem.BytesIOSequence(inBytes)
diff --git a/pkg/sentry/fsimpl/devpts/line_discipline.go b/pkg/sentry/fsimpl/devpts/line_discipline.go
index b954c1ba1..e6b0e81cf 100644
--- a/pkg/sentry/fsimpl/devpts/line_discipline.go
+++ b/pkg/sentry/fsimpl/devpts/line_discipline.go
@@ -42,7 +42,7 @@ const (
)
// lineDiscipline dictates how input and output are handled between the
-// pseudoterminal (pty) master and slave. It can be configured to alter I/O,
+// pseudoterminal (pty) master and replica. It can be configured to alter I/O,
// modify control characters (e.g. Ctrl-C for SIGINT), etc. The following man
// pages are good resources for how to affect the line discipline:
//
@@ -53,8 +53,8 @@ const (
//
// lineDiscipline has a simple structure but supports a multitude of options
// (see the above man pages). It consists of two queues of bytes: one from the
-// terminal master to slave (the input queue) and one from slave to master (the
-// output queue). When bytes are written to one end of the pty, the line
+// terminal master to replica (the input queue) and one from replica to master
+// (the output queue). When bytes are written to one end of the pty, the line
// discipline reads the bytes, modifies them or takes special action if
// required, and enqueues them to be read by the other end of the pty:
//
@@ -63,7 +63,7 @@ const (
// | (inputQueueWrite) +-------------+ (inputQueueRead) |
// | |
// | v
-// masterFD slaveFD
+// masterFD replicaFD
// ^ |
// | |
// | output to terminal +--------------+ output from process |
@@ -102,8 +102,8 @@ type lineDiscipline struct {
// masterWaiter is used to wait on the master end of the TTY.
masterWaiter waiter.Queue `state:"zerovalue"`
- // slaveWaiter is used to wait on the slave end of the TTY.
- slaveWaiter waiter.Queue `state:"zerovalue"`
+ // replicaWaiter is used to wait on the replica end of the TTY.
+ replicaWaiter waiter.Queue `state:"zerovalue"`
}
func newLineDiscipline(termios linux.KernelTermios) *lineDiscipline {
@@ -141,7 +141,7 @@ func (l *lineDiscipline) setTermios(task *kernel.Task, args arch.SyscallArgument
l.inQueue.pushWaitBufLocked(l)
l.inQueue.readable = true
l.inQueue.mu.Unlock()
- l.slaveWaiter.Notify(waiter.EventIn)
+ l.replicaWaiter.Notify(waiter.EventIn)
}
return 0, err
@@ -167,7 +167,7 @@ func (l *lineDiscipline) masterReadiness() waiter.EventMask {
return l.inQueue.writeReadiness(&linux.MasterTermios) | l.outQueue.readReadiness(&linux.MasterTermios)
}
-func (l *lineDiscipline) slaveReadiness() waiter.EventMask {
+func (l *lineDiscipline) replicaReadiness() waiter.EventMask {
l.termiosMu.RLock()
defer l.termiosMu.RUnlock()
return l.outQueue.writeReadiness(&l.termios) | l.inQueue.readReadiness(&l.termios)
@@ -187,7 +187,7 @@ func (l *lineDiscipline) inputQueueRead(ctx context.Context, dst usermem.IOSeque
if n > 0 {
l.masterWaiter.Notify(waiter.EventOut)
if pushed {
- l.slaveWaiter.Notify(waiter.EventIn)
+ l.replicaWaiter.Notify(waiter.EventIn)
}
return n, nil
}
@@ -202,7 +202,7 @@ func (l *lineDiscipline) inputQueueWrite(ctx context.Context, src usermem.IOSequ
return 0, err
}
if n > 0 {
- l.slaveWaiter.Notify(waiter.EventIn)
+ l.replicaWaiter.Notify(waiter.EventIn)
return n, nil
}
return 0, syserror.ErrWouldBlock
@@ -220,7 +220,7 @@ func (l *lineDiscipline) outputQueueRead(ctx context.Context, dst usermem.IOSequ
return 0, err
}
if n > 0 {
- l.slaveWaiter.Notify(waiter.EventOut)
+ l.replicaWaiter.Notify(waiter.EventOut)
if pushed {
l.masterWaiter.Notify(waiter.EventIn)
}
diff --git a/pkg/sentry/fsimpl/devpts/master.go b/pkg/sentry/fsimpl/devpts/master.go
index 3422db6a4..d07e1ded8 100644
--- a/pkg/sentry/fsimpl/devpts/master.go
+++ b/pkg/sentry/fsimpl/devpts/master.go
@@ -145,11 +145,11 @@ func (mfd *masterFileDescription) Ioctl(ctx context.Context, io usermem.IO, args
return 0, mfd.t.ld.outputQueueReadSize(t, io, args)
case linux.TCGETS:
// N.B. TCGETS on the master actually returns the configuration
- // of the slave end.
+ // of the replica end.
return mfd.t.ld.getTermios(t, args)
case linux.TCSETS:
// N.B. TCSETS on the master actually affects the configuration
- // of the slave end.
+ // of the replica end.
return mfd.t.ld.setTermios(t, args)
case linux.TCSETSW:
// TODO(b/29356795): This should drain the output queue first.
diff --git a/pkg/sentry/fsimpl/devpts/queue.go b/pkg/sentry/fsimpl/devpts/queue.go
index 08eca2589..ca36b66e9 100644
--- a/pkg/sentry/fsimpl/devpts/queue.go
+++ b/pkg/sentry/fsimpl/devpts/queue.go
@@ -32,7 +32,7 @@ import (
const waitBufMaxBytes = 131072
// queue represents one of the input or output queues between a pty master and
-// slave. Bytes written to a queue are added to the read buffer until it is
+// replica. Bytes written to a queue are added to the read buffer until it is
// full, at which point they are written to the wait buffer. Bytes are
// processed (i.e. undergo termios transformations) as they are added to the
// read buffer. The read buffer is readable when its length is nonzero and
diff --git a/pkg/sentry/fsimpl/devpts/slave.go b/pkg/sentry/fsimpl/devpts/replica.go
index 5f4b474b3..1f99f4b4d 100644
--- a/pkg/sentry/fsimpl/devpts/slave.go
+++ b/pkg/sentry/fsimpl/devpts/replica.go
@@ -29,8 +29,8 @@ import (
"gvisor.dev/gvisor/tools/go_marshal/primitive"
)
-// slaveInode is the inode for the slave end of the Terminal.
-type slaveInode struct {
+// replicaInode is the inode for the replica end of the Terminal.
+type replicaInode struct {
implStatFS
kernfs.InodeAttrs
kernfs.InodeNoopRefCount
@@ -49,12 +49,12 @@ type slaveInode struct {
t *Terminal
}
-var _ kernfs.Inode = (*slaveInode)(nil)
+var _ kernfs.Inode = (*replicaInode)(nil)
// Open implements kernfs.Inode.Open.
-func (si *slaveInode) Open(ctx context.Context, rp *vfs.ResolvingPath, vfsd *vfs.Dentry, opts vfs.OpenOptions) (*vfs.FileDescription, error) {
+func (si *replicaInode) Open(ctx context.Context, rp *vfs.ResolvingPath, vfsd *vfs.Dentry, opts vfs.OpenOptions) (*vfs.FileDescription, error) {
si.IncRef()
- fd := &slaveFileDescription{
+ fd := &replicaFileDescription{
inode: si,
}
fd.LockFD.Init(&si.locks)
@@ -67,76 +67,76 @@ func (si *slaveInode) Open(ctx context.Context, rp *vfs.ResolvingPath, vfsd *vfs
}
// Valid implements kernfs.Inode.Valid.
-func (si *slaveInode) Valid(context.Context) bool {
- // Return valid if the slave still exists.
+func (si *replicaInode) Valid(context.Context) bool {
+ // Return valid if the replica still exists.
si.root.mu.Lock()
defer si.root.mu.Unlock()
- _, ok := si.root.slaves[si.t.n]
+ _, ok := si.root.replicas[si.t.n]
return ok
}
// Stat implements kernfs.Inode.Stat.
-func (si *slaveInode) Stat(ctx context.Context, vfsfs *vfs.Filesystem, opts vfs.StatOptions) (linux.Statx, error) {
+func (si *replicaInode) Stat(ctx context.Context, vfsfs *vfs.Filesystem, opts vfs.StatOptions) (linux.Statx, error) {
statx, err := si.InodeAttrs.Stat(ctx, vfsfs, opts)
if err != nil {
return linux.Statx{}, err
}
statx.Blksize = 1024
- statx.RdevMajor = linux.UNIX98_PTY_SLAVE_MAJOR
+ statx.RdevMajor = linux.UNIX98_PTY_REPLICA_MAJOR
statx.RdevMinor = si.t.n
return statx, nil
}
// SetStat implements kernfs.Inode.SetStat
-func (si *slaveInode) SetStat(ctx context.Context, vfsfs *vfs.Filesystem, creds *auth.Credentials, opts vfs.SetStatOptions) error {
+func (si *replicaInode) SetStat(ctx context.Context, vfsfs *vfs.Filesystem, creds *auth.Credentials, opts vfs.SetStatOptions) error {
if opts.Stat.Mask&linux.STATX_SIZE != 0 {
return syserror.EINVAL
}
return si.InodeAttrs.SetStat(ctx, vfsfs, creds, opts)
}
-type slaveFileDescription struct {
+type replicaFileDescription struct {
vfsfd vfs.FileDescription
vfs.FileDescriptionDefaultImpl
vfs.LockFD
- inode *slaveInode
+ inode *replicaInode
}
-var _ vfs.FileDescriptionImpl = (*slaveFileDescription)(nil)
+var _ vfs.FileDescriptionImpl = (*replicaFileDescription)(nil)
// Release implements fs.FileOperations.Release.
-func (sfd *slaveFileDescription) Release(ctx context.Context) {
+func (sfd *replicaFileDescription) Release(ctx context.Context) {
sfd.inode.DecRef(ctx)
}
// EventRegister implements waiter.Waitable.EventRegister.
-func (sfd *slaveFileDescription) EventRegister(e *waiter.Entry, mask waiter.EventMask) {
- sfd.inode.t.ld.slaveWaiter.EventRegister(e, mask)
+func (sfd *replicaFileDescription) EventRegister(e *waiter.Entry, mask waiter.EventMask) {
+ sfd.inode.t.ld.replicaWaiter.EventRegister(e, mask)
}
// EventUnregister implements waiter.Waitable.EventUnregister.
-func (sfd *slaveFileDescription) EventUnregister(e *waiter.Entry) {
- sfd.inode.t.ld.slaveWaiter.EventUnregister(e)
+func (sfd *replicaFileDescription) EventUnregister(e *waiter.Entry) {
+ sfd.inode.t.ld.replicaWaiter.EventUnregister(e)
}
// Readiness implements waiter.Waitable.Readiness.
-func (sfd *slaveFileDescription) Readiness(mask waiter.EventMask) waiter.EventMask {
- return sfd.inode.t.ld.slaveReadiness()
+func (sfd *replicaFileDescription) Readiness(mask waiter.EventMask) waiter.EventMask {
+ return sfd.inode.t.ld.replicaReadiness()
}
// Read implements vfs.FileDescriptionImpl.Read.
-func (sfd *slaveFileDescription) Read(ctx context.Context, dst usermem.IOSequence, _ vfs.ReadOptions) (int64, error) {
+func (sfd *replicaFileDescription) Read(ctx context.Context, dst usermem.IOSequence, _ vfs.ReadOptions) (int64, error) {
return sfd.inode.t.ld.inputQueueRead(ctx, dst)
}
// Write implements vfs.FileDescriptionImpl.Write.
-func (sfd *slaveFileDescription) Write(ctx context.Context, src usermem.IOSequence, _ vfs.WriteOptions) (int64, error) {
+func (sfd *replicaFileDescription) Write(ctx context.Context, src usermem.IOSequence, _ vfs.WriteOptions) (int64, error) {
return sfd.inode.t.ld.outputQueueWrite(ctx, src)
}
// Ioctl implements vfs.FileDescriptionImpl.Ioctl.
-func (sfd *slaveFileDescription) Ioctl(ctx context.Context, io usermem.IO, args arch.SyscallArguments) (uintptr, error) {
+func (sfd *replicaFileDescription) Ioctl(ctx context.Context, io usermem.IO, args arch.SyscallArguments) (uintptr, error) {
t := kernel.TaskFromContext(ctx)
if t == nil {
// ioctl(2) may only be called from a task goroutine.
@@ -182,24 +182,24 @@ func (sfd *slaveFileDescription) Ioctl(ctx context.Context, io usermem.IO, args
}
// SetStat implements vfs.FileDescriptionImpl.SetStat.
-func (sfd *slaveFileDescription) SetStat(ctx context.Context, opts vfs.SetStatOptions) error {
+func (sfd *replicaFileDescription) SetStat(ctx context.Context, opts vfs.SetStatOptions) error {
creds := auth.CredentialsFromContext(ctx)
fs := sfd.vfsfd.VirtualDentry().Mount().Filesystem()
return sfd.inode.SetStat(ctx, fs, creds, opts)
}
// Stat implements vfs.FileDescriptionImpl.Stat.
-func (sfd *slaveFileDescription) Stat(ctx context.Context, opts vfs.StatOptions) (linux.Statx, error) {
+func (sfd *replicaFileDescription) Stat(ctx context.Context, opts vfs.StatOptions) (linux.Statx, error) {
fs := sfd.vfsfd.VirtualDentry().Mount().Filesystem()
return sfd.inode.Stat(ctx, fs, opts)
}
// LockPOSIX implements vfs.FileDescriptionImpl.LockPOSIX.
-func (sfd *slaveFileDescription) LockPOSIX(ctx context.Context, uid fslock.UniqueID, t fslock.LockType, start, length uint64, whence int16, block fslock.Blocker) error {
+func (sfd *replicaFileDescription) LockPOSIX(ctx context.Context, uid fslock.UniqueID, t fslock.LockType, start, length uint64, whence int16, block fslock.Blocker) error {
return sfd.Locks().LockPOSIX(ctx, &sfd.vfsfd, uid, t, start, length, whence, block)
}
// UnlockPOSIX implements vfs.FileDescriptionImpl.UnlockPOSIX.
-func (sfd *slaveFileDescription) UnlockPOSIX(ctx context.Context, uid fslock.UniqueID, start, length uint64, whence int16) error {
+func (sfd *replicaFileDescription) UnlockPOSIX(ctx context.Context, uid fslock.UniqueID, start, length uint64, whence int16) error {
return sfd.Locks().UnlockPOSIX(ctx, &sfd.vfsfd, uid, start, length, whence)
}
diff --git a/pkg/sentry/fsimpl/devpts/terminal.go b/pkg/sentry/fsimpl/devpts/terminal.go
index e88eb6360..731955d62 100644
--- a/pkg/sentry/fsimpl/devpts/terminal.go
+++ b/pkg/sentry/fsimpl/devpts/terminal.go
@@ -36,18 +36,18 @@ type Terminal struct {
// this terminal. This field is immutable.
masterKTTY *kernel.TTY
- // slaveKTTY contains the controlling process of the slave end of this
+ // replicaKTTY contains the controlling process of the replica end of this
// terminal. This field is immutable.
- slaveKTTY *kernel.TTY
+ replicaKTTY *kernel.TTY
}
func newTerminal(n uint32) *Terminal {
- termios := linux.DefaultSlaveTermios
+ termios := linux.DefaultReplicaTermios
t := Terminal{
- n: n,
- ld: newLineDiscipline(termios),
- masterKTTY: &kernel.TTY{Index: n},
- slaveKTTY: &kernel.TTY{Index: n},
+ n: n,
+ ld: newLineDiscipline(termios),
+ masterKTTY: &kernel.TTY{Index: n},
+ replicaKTTY: &kernel.TTY{Index: n},
}
return &t
}
@@ -113,5 +113,5 @@ func (tm *Terminal) tty(isMaster bool) *kernel.TTY {
if isMaster {
return tm.masterKTTY
}
- return tm.slaveKTTY
+ return tm.replicaKTTY
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-18 13:26:06 +0000