aboutsummaryrefslogtreecommitdiff
path: root/fs/cachefiles
diff options
context:
space:
mode:
authorMiklos Szeredi <mszeredi@suse.cz>2010-08-10 11:41:35 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2010-08-11 00:28:20 -0400
commit542ce7a9bc6b3838832ae0f4f8de30c667af8ff3 (patch)
treefd6729805ce4f635ff4fd628fac00163a1e328cf /fs/cachefiles
parent6d0b5456e14ec19edae7c18de4d355c58b133bd6 (diff)
downloadlinux-542ce7a9bc6b3838832ae0f4f8de30c667af8ff3.tar.gz
cachefiles: use path_get instead of lone dget
Dentry references should not be acquired without a corresponding vfsmount ref. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/cachefiles')
-rw-r--r--fs/cachefiles/daemon.c26
1 files changed, 14 insertions, 12 deletions
diff --git a/fs/cachefiles/daemon.c b/fs/cachefiles/daemon.c
index 24eb0d37241..72d4d004282 100644
--- a/fs/cachefiles/daemon.c
+++ b/fs/cachefiles/daemon.c
@@ -553,7 +553,7 @@ static int cachefiles_daemon_tag(struct cachefiles_cache *cache, char *args)
static int cachefiles_daemon_cull(struct cachefiles_cache *cache, char *args)
{
struct fs_struct *fs;
- struct dentry *dir;
+ struct path path;
const struct cred *saved_cred;
int ret;
@@ -575,22 +575,23 @@ static int cachefiles_daemon_cull(struct cachefiles_cache *cache, char *args)
/* extract the directory dentry from the cwd */
fs = current->fs;
read_lock(&fs->lock);
- dir = dget(fs->pwd.dentry);
+ path = fs->pwd;
+ path_get(&path);
read_unlock(&fs->lock);
- if (!S_ISDIR(dir->d_inode->i_mode))
+ if (!S_ISDIR(path.dentry->d_inode->i_mode))
goto notdir;
cachefiles_begin_secure(cache, &saved_cred);
- ret = cachefiles_cull(cache, dir, args);
+ ret = cachefiles_cull(cache, path.dentry, args);
cachefiles_end_secure(cache, saved_cred);
- dput(dir);
+ path_put(&path);
_leave(" = %d", ret);
return ret;
notdir:
- dput(dir);
+ path_put(&path);
kerror("cull command requires dirfd to be a directory");
return -ENOTDIR;
@@ -629,7 +630,7 @@ inval:
static int cachefiles_daemon_inuse(struct cachefiles_cache *cache, char *args)
{
struct fs_struct *fs;
- struct dentry *dir;
+ struct path path;
const struct cred *saved_cred;
int ret;
@@ -651,22 +652,23 @@ static int cachefiles_daemon_inuse(struct cachefiles_cache *cache, char *args)
/* extract the directory dentry from the cwd */
fs = current->fs;
read_lock(&fs->lock);
- dir = dget(fs->pwd.dentry);
+ path = fs->pwd;
+ path_get(&path);
read_unlock(&fs->lock);
- if (!S_ISDIR(dir->d_inode->i_mode))
+ if (!S_ISDIR(path.dentry->d_inode->i_mode))
goto notdir;
cachefiles_begin_secure(cache, &saved_cred);
- ret = cachefiles_check_in_use(cache, dir, args);
+ ret = cachefiles_check_in_use(cache, path.dentry, args);
cachefiles_end_secure(cache, saved_cred);
- dput(dir);
+ path_put(&path);
//_leave(" = %d", ret);
return ret;
notdir:
- dput(dir);
+ path_put(&path);
kerror("inuse command requires dirfd to be a directory");
return -ENOTDIR;