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From: Eric Paris on 12 May 2010 12:00
akpm got a warning the fsnotify_mask could be used uninitialized in
fsnotify_perm(). It's not actually possible but his compiler complained
about it. This patch just initializes it to 0 to shut up the compiler.

Reported-by: Andrew Morton <akpm(a)linux-foundation.org>
Signed-off-by: Eric Paris <eparis(a)redhat.com>
---
include/linux/fsnotify.h | 8 +++++---
1 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/include/linux/fsnotify.h b/include/linux/fsnotify.h
index 64efda9..59d0df4 100644
--- a/include/linux/fsnotify.h
+++ b/include/linux/fsnotify.h
@@ -39,16 +39,18 @@ static inline int fsnotify_perm(struct file *file, int mask)
{
struct path *path = &file->f_path;
struct inode *inode = path->dentry->d_inode;
- __u32 fsnotify_mask;
+ __u32 fsnotify_mask = 0;

if (file->f_mode & FMODE_NONOTIFY)
return 0;
if (!(mask & (MAY_READ | MAY_OPEN)))
return 0;
- if (mask & MAY_READ)
- fsnotify_mask = FS_ACCESS_PERM;
if (mask & MAY_OPEN)
fsnotify_mask = FS_OPEN_PERM;
+ else if (mask & MAY_READ)
+ fsnotify_mask = FS_ACCESS_PERM;
+ else
+ BUG();

return fsnotify(inode, fsnotify_mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
}
--
1.6.5.3

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Prev: [PATCH -V7 0/8] Generic name to handle and open by handle syscalls
Next: [PATCH -V7 9/9] ext3: Add get_fsid callback