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Diffstat (limited to 'pkg/sentry/fsimpl/kernfs/kernfs.go')
-rwxr-xr-xpkg/sentry/fsimpl/kernfs/kernfs.go16
1 files changed, 15 insertions, 1 deletions
diff --git a/pkg/sentry/fsimpl/kernfs/kernfs.go b/pkg/sentry/fsimpl/kernfs/kernfs.go
index 2cefef020..ad76b9f64 100755
--- a/pkg/sentry/fsimpl/kernfs/kernfs.go
+++ b/pkg/sentry/fsimpl/kernfs/kernfs.go
@@ -414,7 +414,21 @@ type inodeDynamicLookup interface {
}
type inodeSymlink interface {
- // Readlink resolves the target of a symbolic link. If an inode is not a
+ // Readlink returns the target of a symbolic link. If an inode is not a
// symlink, the implementation should return EINVAL.
Readlink(ctx context.Context) (string, error)
+
+ // Getlink returns the target of a symbolic link, as used by path
+ // resolution:
+ //
+ // - If the inode is a "magic link" (a link whose target is most accurately
+ // represented as a VirtualDentry), Getlink returns (ok VirtualDentry, "",
+ // nil). A reference is taken on the returned VirtualDentry.
+ //
+ // - If the inode is an ordinary symlink, Getlink returns (zero-value
+ // VirtualDentry, symlink target, nil).
+ //
+ // - If the inode is not a symlink, Getlink returns (zero-value
+ // VirtualDentry, "", EINVAL).
+ Getlink(ctx context.Context) (vfs.VirtualDentry, string, error)
}