5 files changed, 26 insertions, 11 deletions
diff --git a/pkg/sentry/fs/proc/proc_state_autogen.go b/pkg/sentry/fs/proc/proc_state_autogen.go
index eedd011a8..1fc5cece2 100755
--- a/pkg/sentry/fs/proc/proc_state_autogen.go
+++ b/pkg/sentry/fs/proc/proc_state_autogen.go
@@ -382,15 +382,15 @@ func (x *tcpMemFile) load(m state.Map) {
 func (x *tcpSack) beforeSave() {}
 func (x *tcpSack) save(m state.Map) {
 	x.beforeSave()
+	m.Save("SimpleFileInode", &x.SimpleFileInode)
 	m.Save("stack", &x.stack)
 	m.Save("enabled", &x.enabled)
-	m.Save("SimpleFileInode", &x.SimpleFileInode)
 }
 
 func (x *tcpSack) load(m state.Map) {
+	m.Load("SimpleFileInode", &x.SimpleFileInode)
 	m.LoadWait("stack", &x.stack)
 	m.Load("enabled", &x.enabled)
-	m.Load("SimpleFileInode", &x.SimpleFileInode)
 	m.AfterLoad(x.afterLoad)
 }
 
diff --git a/pkg/sentry/fs/proc/sys_net.go b/pkg/sentry/fs/proc/sys_net.go
index f3b63dfc2..bd93f83fa 100644
--- a/pkg/sentry/fs/proc/sys_net.go
+++ b/pkg/sentry/fs/proc/sys_net.go
@@ -64,7 +64,7 @@ var _ fs.InodeOperations = (*tcpMemInode)(nil)
 
 func newTCPMemInode(ctx context.Context, msrc *fs.MountSource, s inet.Stack, dir tcpMemDir) *fs.Inode {
 	tm := &tcpMemInode{
-		SimpleFileInode: *fsutil.NewSimpleFileInode(ctx, fs.RootOwner, fs.FilePermsFromMode(0444), linux.PROC_SUPER_MAGIC),
+		SimpleFileInode: *fsutil.NewSimpleFileInode(ctx, fs.RootOwner, fs.FilePermsFromMode(0644), linux.PROC_SUPER_MAGIC),
 		s:               s,
 		dir:             dir,
 	}
@@ -77,6 +77,11 @@ func newTCPMemInode(ctx context.Context, msrc *fs.MountSource, s inet.Stack, dir
 	return fs.NewInode(ctx, tm, msrc, sattr)
 }
 
+// Truncate implements fs.InodeOperations.Truncate.
+func (tcpMemInode) Truncate(context.Context, *fs.Inode, int64) error {
+	return nil
+}
+
 // GetFile implements fs.InodeOperations.GetFile.
 func (m *tcpMemInode) GetFile(ctx context.Context, dirent *fs.Dirent, flags fs.FileFlags) (*fs.File, error) {
 	flags.Pread = true
@@ -168,14 +173,15 @@ func writeSize(dirType tcpMemDir, s inet.Stack, size inet.TCPBufferSize) error {
 
 // +stateify savable
 type tcpSack struct {
+	fsutil.SimpleFileInode
+
 	stack   inet.Stack `state:"wait"`
 	enabled *bool
-	fsutil.SimpleFileInode
 }
 
 func newTCPSackInode(ctx context.Context, msrc *fs.MountSource, s inet.Stack) *fs.Inode {
 	ts := &tcpSack{
-		SimpleFileInode: *fsutil.NewSimpleFileInode(ctx, fs.RootOwner, fs.FilePermsFromMode(0444), linux.PROC_SUPER_MAGIC),
+		SimpleFileInode: *fsutil.NewSimpleFileInode(ctx, fs.RootOwner, fs.FilePermsFromMode(0644), linux.PROC_SUPER_MAGIC),
 		stack:           s,
 	}
 	sattr := fs.StableAttr{
@@ -187,6 +193,11 @@ func newTCPSackInode(ctx context.Context, msrc *fs.MountSource, s inet.Stack) *f
 	return fs.NewInode(ctx, ts, msrc, sattr)
 }
 
+// Truncate implements fs.InodeOperations.Truncate.
+func (tcpSack) Truncate(context.Context, *fs.Inode, int64) error {
+	return nil
+}
+
 // GetFile implements fs.InodeOperations.GetFile.
 func (s *tcpSack) GetFile(ctx context.Context, dirent *fs.Dirent, flags fs.FileFlags) (*fs.File, error) {
 	flags.Pread = true
diff --git a/pkg/sentry/fs/tty/master.go b/pkg/sentry/fs/tty/master.go
index bc56be696..934828c12 100644
--- a/pkg/sentry/fs/tty/master.go
+++ b/pkg/sentry/fs/tty/master.go
@@ -32,7 +32,6 @@ import (
 // +stateify savable
 type masterInodeOperations struct {
 	fsutil.SimpleFileInode
-	fsutil.InodeNoopTruncate
 
 	// d is the containing dir.
 	d *dirInodeOperations
@@ -77,6 +76,11 @@ func newMasterInode(ctx context.Context, d *dirInodeOperations, owner fs.FileOwn
 func (mi *masterInodeOperations) Release(ctx context.Context) {
 }
 
+// Truncate implements fs.InodeOperations.Truncate.
+func (masterInodeOperations) Truncate(context.Context, *fs.Inode, int64) error {
+	return nil
+}
+
 // GetFile implements fs.InodeOperations.GetFile.
 //
 // It allocates a new terminal.
diff --git a/pkg/sentry/fs/tty/slave.go b/pkg/sentry/fs/tty/slave.go
index 4cbea0367..2a51e6bab 100644
--- a/pkg/sentry/fs/tty/slave.go
+++ b/pkg/sentry/fs/tty/slave.go
@@ -31,7 +31,6 @@ import (
 // +stateify savable
 type slaveInodeOperations struct {
 	fsutil.SimpleFileInode
-	fsutil.InodeNoopTruncate
 
 	// d is the containing dir.
 	d *dirInodeOperations
@@ -73,6 +72,11 @@ func (si *slaveInodeOperations) Release(ctx context.Context) {
 	si.t.DecRef()
 }
 
+// Truncate implements fs.InodeOperations.Truncate.
+func (slaveInodeOperations) Truncate(context.Context, *fs.Inode, int64) error {
+	return nil
+}
+
 // GetFile implements fs.InodeOperations.GetFile.
 //
 // This may race with destruction of the terminal. If the terminal is gone, it
diff --git a/pkg/sentry/fs/tty/tty_state_autogen.go b/pkg/sentry/fs/tty/tty_state_autogen.go
index 676e531c7..c54600104 100755
--- a/pkg/sentry/fs/tty/tty_state_autogen.go
+++ b/pkg/sentry/fs/tty/tty_state_autogen.go
@@ -101,14 +101,12 @@ func (x *masterInodeOperations) beforeSave() {}
 func (x *masterInodeOperations) save(m state.Map) {
 	x.beforeSave()
 	m.Save("SimpleFileInode", &x.SimpleFileInode)
-	m.Save("InodeNoopTruncate", &x.InodeNoopTruncate)
 	m.Save("d", &x.d)
 }
 
 func (x *masterInodeOperations) afterLoad() {}
 func (x *masterInodeOperations) load(m state.Map) {
 	m.Load("SimpleFileInode", &x.SimpleFileInode)
-	m.Load("InodeNoopTruncate", &x.InodeNoopTruncate)
 	m.Load("d", &x.d)
 }
 
@@ -148,7 +146,6 @@ func (x *slaveInodeOperations) beforeSave() {}
 func (x *slaveInodeOperations) save(m state.Map) {
 	x.beforeSave()
 	m.Save("SimpleFileInode", &x.SimpleFileInode)
-	m.Save("InodeNoopTruncate", &x.InodeNoopTruncate)
 	m.Save("d", &x.d)
 	m.Save("t", &x.t)
 }
@@ -156,7 +153,6 @@ func (x *slaveInodeOperations) save(m state.Map) {
 func (x *slaveInodeOperations) afterLoad() {}
 func (x *slaveInodeOperations) load(m state.Map) {
 	m.Load("SimpleFileInode", &x.SimpleFileInode)
-	m.Load("InodeNoopTruncate", &x.InodeNoopTruncate)
 	m.Load("d", &x.d)
 	m.Load("t", &x.t)
 }