summaryrefslogtreecommitdiffstats
path: root/fs/notify/inotify/inotify_user.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/notify/inotify/inotify_user.c')
-rw-r--r--fs/notify/inotify/inotify_user.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c
index 1cf5b779d862..6f48d325c350 100644
--- a/fs/notify/inotify/inotify_user.c
+++ b/fs/notify/inotify/inotify_user.c
@@ -510,6 +510,7 @@ static int inotify_update_existing_watch(struct fsnotify_group *group,
__u32 old_mask, new_mask;
__u32 mask;
int add = (arg & IN_MASK_ADD);
+ int create = (arg & IN_MASK_CREATE);
int ret;
mask = inotify_arg_to_mask(arg);
@@ -517,6 +518,8 @@ static int inotify_update_existing_watch(struct fsnotify_group *group,
fsn_mark = fsnotify_find_mark(&inode->i_fsnotify_marks, group);
if (!fsn_mark)
return -ENOENT;
+ else if (create)
+ return -EEXIST;
i_mark = container_of(fsn_mark, struct inotify_inode_mark, fsn_mark);
@@ -718,6 +721,10 @@ SYSCALL_DEFINE3(inotify_add_watch, int, fd, const char __user *, pathname,
if (unlikely(!f.file))
return -EBADF;
+ /* IN_MASK_ADD and IN_MASK_CREATE don't make sense together */
+ if (unlikely((mask & IN_MASK_ADD) && (mask & IN_MASK_CREATE)))
+ return -EINVAL;
+
/* verify that this is indeed an inotify instance */
if (unlikely(f.file->f_op != &inotify_fops)) {
ret = -EINVAL;
@@ -806,7 +813,7 @@ static int __init inotify_user_setup(void)
BUILD_BUG_ON(IN_ISDIR != FS_ISDIR);
BUILD_BUG_ON(IN_ONESHOT != FS_IN_ONESHOT);
- BUG_ON(hweight32(ALL_INOTIFY_BITS) != 21);
+ BUG_ON(hweight32(ALL_INOTIFY_BITS) != 22);
inotify_inode_mark_cachep = KMEM_CACHE(inotify_inode_mark, SLAB_PANIC);