Include context in kernfs.Inode.Stat method

To implement stat(2) in FUSE, we have to embed credentials and pid in request
header. The information should be extracted from the context passed to VFS
layer. Therefore `Stat()` signature in `kernfs.Inode` interface should include
context as first argument. Some other fs implementations need to be modified as
well, such as devpts, host, pipefs, and proc.

Fixes #3235

1 files changed, 3 insertions, 3 deletions

diff --git a/pkg/sentry/fsimpl/devpts/slave.go b/pkg/sentry/fsimpl/devpts/slave.go
index cf1a0f0ac..2018b978a 100644
--- a/pkg/sentry/fsimpl/devpts/slave.go
+++ b/pkg/sentry/fsimpl/devpts/slave.go
@@ -73,8 +73,8 @@ func (si *slaveInode) Valid(context.Context) bool {
 }
 
 // Stat implements kernfs.Inode.Stat.
-func (si *slaveInode) Stat(vfsfs *vfs.Filesystem, opts vfs.StatOptions) (linux.Statx, error) {
-	statx, err := si.InodeAttrs.Stat(vfsfs, opts)
+func (si *slaveInode) 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
 	}
@@ -183,7 +183,7 @@ func (sfd *slaveFileDescription) SetStat(ctx context.Context, opts vfs.SetStatOp
 // Stat implements vfs.FileDescriptionImpl.Stat.
 func (sfd *slaveFileDescription) Stat(ctx context.Context, opts vfs.StatOptions) (linux.Statx, error) {
 	fs := sfd.vfsfd.VirtualDentry().Mount().Filesystem()
-	return sfd.inode.Stat(fs, opts)
+	return sfd.inode.Stat(ctx, fs, opts)
 }
 
 // LockPOSIX implements vfs.FileDescriptionImpl.LockPOSIX.