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| author | Miklos Szeredi <mszeredi@suse.cz> | 2012-03-26 12:54:21 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-03-31 16:03:16 -0400 |
| commit | cda309de253f338b04d15b4478e45fc3a0fcc7a3 (patch) | |
| tree | 93b5c767935ee7ec8a664f01ba684415754d929b | |
| parent | 3637c05d881b2b7bab36f339245b8963f5b29c9f (diff) | |
| download | linux-cda309de253f338b04d15b4478e45fc3a0fcc7a3.tar.gz | |
vfs: move MAY_EXEC check from __lookup_hash()
The only caller of __lookup_hash() that needs the exec permission check on parent is lookup_one_len(). All lookup_hash() callers already checked permission in LOOKUP_PARENT walk. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/namei.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/fs/namei.c b/fs/namei.c index 82f9568d315d..907e24785576 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1849,13 +1849,7 @@ int vfs_path_lookup(struct dentry *dentry, struct vfsmount *mnt, static struct dentry *__lookup_hash(struct qstr *name, struct dentry *base, struct nameidata *nd) { - struct inode *inode = base->d_inode; struct dentry *dentry; - int err; - - err = inode_permission(inode, MAY_EXEC); - if (err) - return ERR_PTR(err); /* * Don't bother with __d_lookup: callers are for creat as @@ -1922,6 +1916,7 @@ struct dentry *lookup_one_len(const char *name, struct dentry *base, int len) { struct qstr this; unsigned int c; + int err; WARN_ON_ONCE(!mutex_is_locked(&base->d_inode->i_mutex)); @@ -1946,6 +1941,10 @@ struct dentry *lookup_one_len(const char *name, struct dentry *base, int len) return ERR_PTR(err); } + err = inode_permission(base->d_inode, MAY_EXEC); + if (err) + return ERR_PTR(err); + return __lookup_hash(&this, base, NULL); } |