diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/overlayfs/super.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index 5e254b3a8c56..cbfa0398f9da 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -423,12 +423,16 @@ static bool ovl_dentry_weird(struct dentry *dentry) DCACHE_OP_COMPARE); } -static inline struct dentry *ovl_lookup_real(struct dentry *dir, +static inline struct dentry *ovl_lookup_real(struct super_block *ovl_sb, + struct dentry *dir, struct qstr *name) { + const struct cred *old_cred; struct dentry *dentry; - dentry = lookup_hash(name, dir); + old_cred = ovl_override_creds(ovl_sb); + dentry = lookup_one_len_unlocked(name->name, dir, name->len); + revert_creds(old_cred); if (IS_ERR(dentry)) { if (PTR_ERR(dentry) == -ENOENT) @@ -481,7 +485,7 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, upperdir = ovl_upperdentry_dereference(poe); if (upperdir) { - this = ovl_lookup_real(upperdir, &dentry->d_name); + this = ovl_lookup_real(dentry->d_sb, upperdir, &dentry->d_name); err = PTR_ERR(this); if (IS_ERR(this)) goto out; @@ -514,7 +518,8 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, bool opaque = false; struct path lowerpath = poe->lowerstack[i]; - this = ovl_lookup_real(lowerpath.dentry, &dentry->d_name); + this = ovl_lookup_real(dentry->d_sb, + lowerpath.dentry, &dentry->d_name); err = PTR_ERR(this); if (IS_ERR(this)) { /* |