3 files changed, 14 insertions, 1 deletions
diff --git a/pkg/sentry/fsimpl/gofer/gofer.go b/pkg/sentry/fsimpl/gofer/gofer.go
index c4a8f0b38..999485492 100644
--- a/pkg/sentry/fsimpl/gofer/gofer.go
+++ b/pkg/sentry/fsimpl/gofer/gofer.go
@@ -713,7 +713,7 @@ func (d *dentry) setStat(ctx context.Context, creds *auth.Credentials, stat *lin
 	if stat.Mask&^(linux.STATX_MODE|linux.STATX_UID|linux.STATX_GID|linux.STATX_ATIME|linux.STATX_MTIME|linux.STATX_SIZE) != 0 {
 		return syserror.EPERM
 	}
-	if err := vfs.CheckSetStat(creds, stat, uint16(atomic.LoadUint32(&d.mode))&^linux.S_IFMT, auth.KUID(atomic.LoadUint32(&d.uid)), auth.KGID(atomic.LoadUint32(&d.gid))); err != nil {
+	if err := vfs.CheckSetStat(ctx, creds, stat, uint16(atomic.LoadUint32(&d.mode))&^linux.S_IFMT, auth.KUID(atomic.LoadUint32(&d.uid)), auth.KGID(atomic.LoadUint32(&d.gid))); err != nil {
 		return err
 	}
 	if err := mnt.CheckBeginWrite(); err != nil {
diff --git a/pkg/sentry/fsimpl/gofer/regular_file.go b/pkg/sentry/fsimpl/gofer/regular_file.go
index e95209661..3593eb1d5 100644
--- a/pkg/sentry/fsimpl/gofer/regular_file.go
+++ b/pkg/sentry/fsimpl/gofer/regular_file.go
@@ -126,6 +126,11 @@ func (fd *regularFileFD) PWrite(ctx context.Context, src usermem.IOSequence, off
 	if opts.Flags != 0 {
 		return 0, syserror.EOPNOTSUPP
 	}
+	limit, err := vfs.CheckLimit(ctx, offset, src.NumBytes())
+	if err != nil {
+		return 0, err
+	}
+	src = src.TakeFirst64(limit)
 
 	d := fd.dentry()
 	d.metadataMu.Lock()
diff --git a/pkg/sentry/fsimpl/gofer/special_file.go b/pkg/sentry/fsimpl/gofer/special_file.go
index 08c691c47..274f7346f 100644
--- a/pkg/sentry/fsimpl/gofer/special_file.go
+++ b/pkg/sentry/fsimpl/gofer/special_file.go
@@ -107,6 +107,14 @@ func (fd *specialFileFD) PWrite(ctx context.Context, src usermem.IOSequence, off
 		return 0, syserror.EOPNOTSUPP
 	}
 
+	if fd.dentry().fileType() == linux.S_IFREG {
+		limit, err := vfs.CheckLimit(ctx, offset, src.NumBytes())
+		if err != nil {
+			return 0, err
+		}
+		src = src.TakeFirst64(limit)
+	}
+
 	// Do a buffered write. See rationale in PRead.
 	if d := fd.dentry(); d.fs.opts.interop != InteropModeShared {
 		d.touchCMtime(ctx)