aboutsummaryrefslogtreecommitdiff
path: root/security/tomoyo/realpath.c
diff options
context:
space:
mode:
authorAl Viro <viro@zeniv.linux.org.uk>2010-02-05 01:41:33 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2010-03-03 14:07:59 -0500
commit37afdc7960ab493f827b5df9dc1b71b63b44331c (patch)
tree6c9b79d2cf73de3c5d371447ded129e3a32167e5 /security/tomoyo/realpath.c
parent9f5596af44514f99e3a654a4f7cb813354b9e516 (diff)
downloadlinux-37afdc7960ab493f827b5df9dc1b71b63b44331c.tar.gz
get rid of insanity with namespace roots in tomoyo
passing *any* namespace root to __d_path() as root is equivalent to just passing it {NULL, NULL}; no need to bother with finding the root of our namespace in there. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'security/tomoyo/realpath.c')
-rw-r--r--security/tomoyo/realpath.c23
1 files changed, 4 insertions, 19 deletions
diff --git a/security/tomoyo/realpath.c b/security/tomoyo/realpath.c
index 18369d497eb..6a4f8495f28 100644
--- a/security/tomoyo/realpath.c
+++ b/security/tomoyo/realpath.c
@@ -89,27 +89,12 @@ int tomoyo_realpath_from_path2(struct path *path, char *newname,
sp = dentry->d_op->d_dname(dentry, newname + offset,
newname_len - offset);
} else {
- /* Taken from d_namespace_path(). */
- struct path root;
- struct path ns_root = { };
- struct path tmp;
-
- read_lock(&current->fs->lock);
- root = current->fs->root;
- path_get(&root);
- read_unlock(&current->fs->lock);
- spin_lock(&vfsmount_lock);
- if (root.mnt && root.mnt->mnt_ns)
- ns_root.mnt = mntget(root.mnt->mnt_ns->root);
- if (ns_root.mnt)
- ns_root.dentry = dget(ns_root.mnt->mnt_root);
- spin_unlock(&vfsmount_lock);
+ struct path ns_root = {.mnt = NULL, .dentry = NULL};
+
spin_lock(&dcache_lock);
- tmp = ns_root;
- sp = __d_path(path, &tmp, newname, newname_len);
+ /* go to whatever namespace root we are under */
+ sp = __d_path(path, &ns_root, newname, newname_len);
spin_unlock(&dcache_lock);
- path_put(&root);
- path_put(&ns_root);
/* Prepend "/proc" prefix if using internal proc vfs mount. */
if (!IS_ERR(sp) && (path->mnt->mnt_parent == path->mnt) &&
(strcmp(path->mnt->mnt_sb->s_type->name, "proc") == 0)) {