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authorDavid Howells <dhowells@redhat.com>2012-06-25 12:55:18 +0100
committerAl Viro <viro@zeniv.linux.org.uk>2012-07-14 16:37:27 +0400
commitbe34d1a3bc4b6f357a49acb55ae870c81337e4f0 (patch)
tree39caaf1b4965d47be64ce45491477fce555b2d17 /kernel
parent55e4def0a6e79e7eb53017c4935adfed76510cd7 (diff)
downloadlinux-linaro-stable-be34d1a3bc4b6f357a49acb55ae870c81337e4f0.tar.gz
VFS: Make clone_mnt()/copy_tree()/collect_mounts() return errors
copy_tree() can theoretically fail in a case other than ENOMEM, but always returns NULL which is interpreted by callers as -ENOMEM. Change it to return an explicit error. Also change clone_mnt() for consistency and because union mounts will add new error cases. Thanks to Andreas Gruenbacher <agruen@suse.de> for a bug fix. [AV: folded braino fix by Dan Carpenter] Original-author: Valerie Aurora <vaurora@redhat.com> Signed-off-by: David Howells <dhowells@redhat.com> Cc: Valerie Aurora <valerie.aurora@gmail.com> Cc: Andreas Gruenbacher <agruen@suse.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/audit_tree.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c
index 5bf0790497e7..3a5ca582ba1e 100644
--- a/kernel/audit_tree.c
+++ b/kernel/audit_tree.c
@@ -595,7 +595,7 @@ void audit_trim_trees(void)
root_mnt = collect_mounts(&path);
path_put(&path);
- if (!root_mnt)
+ if (IS_ERR(root_mnt))
goto skip_it;
spin_lock(&hash_lock);
@@ -669,8 +669,8 @@ int audit_add_tree_rule(struct audit_krule *rule)
goto Err;
mnt = collect_mounts(&path);
path_put(&path);
- if (!mnt) {
- err = -ENOMEM;
+ if (IS_ERR(mnt)) {
+ err = PTR_ERR(mnt);
goto Err;
}
@@ -719,8 +719,8 @@ int audit_tag_tree(char *old, char *new)
return err;
tagged = collect_mounts(&path2);
path_put(&path2);
- if (!tagged)
- return -ENOMEM;
+ if (IS_ERR(tagged))
+ return PTR_ERR(tagged);
err = kern_path(old, 0, &path1);
if (err) {