diff options
Diffstat (limited to 'pkg/sentry/fs/dirent.go')
| -rw-r--r-- | pkg/sentry/fs/dirent.go | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/pkg/sentry/fs/dirent.go b/pkg/sentry/fs/dirent.go index f81f7d627..dd2b4e589 100644 --- a/pkg/sentry/fs/dirent.go +++ b/pkg/sentry/fs/dirent.go @@ -773,6 +773,11 @@ func (d *Dirent) CreateHardLink(ctx context.Context, root *Dirent, target *Diren return syscall.EXDEV } + // Directories are never linkable. See fs/namei.c:vfs_link. + if IsDir(target.Inode.StableAttr) { + return syscall.EPERM + } + return d.genericCreate(ctx, root, name, func() error { if err := d.Inode.CreateHardLink(ctx, d, target, name); err != nil { return err |