Plumbing context.Context to DecRef() and Release().

context is passed to DecRef() and Release() which is
needed for SO_LINGER implementation.

PiperOrigin-RevId: 324672584

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)
 	}

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
 }
 

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)

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.