diff options
Diffstat (limited to 'fs/overlayfs/inode.c')
| -rw-r--r-- | fs/overlayfs/inode.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index bfd7c766b5cd..56ba015b9f5e 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -645,6 +645,22 @@ static bool ovl_verify_inode(struct inode *inode, struct dentry *lowerdentry, return true; } +struct inode *ovl_lookup_inode(struct super_block *sb, struct dentry *origin) +{ + struct inode *inode, *key = d_inode(origin); + + inode = ilookup5(sb, (unsigned long) key, ovl_inode_test, key); + if (!inode) + return NULL; + + if (!ovl_verify_inode(inode, origin, NULL)) { + iput(inode); + return ERR_PTR(-ESTALE); + } + + return inode; +} + struct inode *ovl_get_inode(struct super_block *sb, struct dentry *upperdentry, struct dentry *lowerdentry, struct dentry *index, unsigned int numlower) |