diff options
| -rw-r--r-- | fs/inotify.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/fs/inotify.c b/fs/inotify.c index 807209f0bcd..b55d6e4a091 100644 --- a/fs/inotify.c +++ b/fs/inotify.c @@ -929,6 +929,12 @@ asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, u32 mask) if (unlikely(!filp)) return -EBADF; + /* verify that this is indeed an inotify instance */ + if (unlikely(filp->f_op != &inotify_fops)) { + ret = -EINVAL; + goto fput_and_out; + } + ret = find_inode(path, &nd); if (unlikely(ret)) goto fput_and_out; @@ -986,10 +992,18 @@ asmlinkage long sys_inotify_rm_watch(int fd, u32 wd) filp = fget_light(fd, &fput_needed); if (unlikely(!filp)) return -EBADF; + + /* verify that this is indeed an inotify instance */ + if (unlikely(filp->f_op != &inotify_fops)) { + ret = -EINVAL; + goto out; + } + dev = filp->private_data; ret = inotify_ignore(dev, wd); - fput_light(filp, fput_needed); +out: + fput_light(filp, fput_needed); return ret; } |