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-rw-r--r--fs/overlayfs/util.c21
1 files changed, 19 insertions, 2 deletions
diff --git a/fs/overlayfs/util.c b/fs/overlayfs/util.c
index b9b239fa5cfd..d6bb1c9f5e7a 100644
--- a/fs/overlayfs/util.c
+++ b/fs/overlayfs/util.c
@@ -17,7 +17,6 @@
#include <linux/namei.h>
#include <linux/ratelimit.h>
#include "overlayfs.h"
-#include "ovl_entry.h"
int ovl_want_write(struct dentry *dentry)
{
@@ -125,7 +124,12 @@ void ovl_path_lower(struct dentry *dentry, struct path *path)
{
struct ovl_entry *oe = dentry->d_fsdata;
- *path = oe->numlower ? oe->lowerstack[0] : (struct path) { };
+ if (oe->numlower) {
+ path->mnt = oe->lowerstack[0].layer->mnt;
+ path->dentry = oe->lowerstack[0].dentry;
+ } else {
+ *path = (struct path) { };
+ }
}
enum ovl_path_type ovl_path_real(struct dentry *dentry, struct path *path)
@@ -329,6 +333,19 @@ void ovl_copy_up_end(struct dentry *dentry)
mutex_unlock(&OVL_I(d_inode(dentry))->lock);
}
+bool ovl_check_origin_xattr(struct dentry *dentry)
+{
+ int res;
+
+ res = vfs_getxattr(dentry, OVL_XATTR_ORIGIN, NULL, 0);
+
+ /* Zero size value means "copied up but origin unknown" */
+ if (res >= 0)
+ return true;
+
+ return false;
+}
+
bool ovl_check_dir_xattr(struct dentry *dentry, const char *name)
{
int res;