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| author | Eric Paris <eparis@redhat.com> | 2010-07-28 10:18:37 -0400 |
|---|---|---|
| committer | Eric Paris <eparis@redhat.com> | 2010-07-28 10:18:49 -0400 |
| commit | f874e1ac21d7708464dc656a10312542c54719f1 (patch) | |
| tree | be47a1f5333208647e016f1861eaf21fb963478b | |
| parent | 8c1934c8d70b22ca8333b216aec6c7d09fdbd6a6 (diff) | |
| download | linux-stable-f874e1ac21d7708464dc656a10312542c54719f1.tar.gz linux-stable-f874e1ac21d7708464dc656a10312542c54719f1.tar.bz2 linux-stable-f874e1ac21d7708464dc656a10312542c54719f1.zip | |
inotify: force inotify and fsnotify use same bits
inotify uses bits called IN_* and fsnotify uses bits called FS_*. These
need to line up. This patch adds build time checks to make sure noone can
change these bits so they are not the same.
Signed-off-by: Eric Paris <eparis@redhat.com>
| -rw-r--r-- | fs/notify/inotify/inotify_user.c | 21 | ||||
| -rw-r--r-- | include/linux/inotify.h | 9 |
2 files changed, 30 insertions, 0 deletions
diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c index dfc80f70e517..c8203ce28ab7 100644 --- a/fs/notify/inotify/inotify_user.c +++ b/fs/notify/inotify/inotify_user.c @@ -839,6 +839,27 @@ out: */ static int __init inotify_user_setup(void) { + BUILD_BUG_ON(IN_ACCESS != FS_ACCESS); + BUILD_BUG_ON(IN_MODIFY != FS_MODIFY); + BUILD_BUG_ON(IN_ATTRIB != FS_ATTRIB); + BUILD_BUG_ON(IN_CLOSE_WRITE != FS_CLOSE_WRITE); + BUILD_BUG_ON(IN_CLOSE_NOWRITE != FS_CLOSE_NOWRITE); + BUILD_BUG_ON(IN_OPEN != FS_OPEN); + BUILD_BUG_ON(IN_MOVED_FROM != FS_MOVED_FROM); + BUILD_BUG_ON(IN_MOVED_TO != FS_MOVED_TO); + BUILD_BUG_ON(IN_CREATE != FS_CREATE); + BUILD_BUG_ON(IN_DELETE != FS_DELETE); + BUILD_BUG_ON(IN_DELETE_SELF != FS_DELETE_SELF); + BUILD_BUG_ON(IN_MOVE_SELF != FS_MOVE_SELF); + BUILD_BUG_ON(IN_UNMOUNT != FS_UNMOUNT); + BUILD_BUG_ON(IN_Q_OVERFLOW != FS_Q_OVERFLOW); + BUILD_BUG_ON(IN_IGNORED != FS_IN_IGNORED); + BUILD_BUG_ON(IN_EXCL_UNLINK != FS_EXCL_UNLINK); + BUILD_BUG_ON(IN_ISDIR != FS_IN_ISDIR); + BUILD_BUG_ON(IN_ONESHOT != FS_IN_ONESHOT); + + BUG_ON(hweight32(ALL_INOTIFY_BITS) != 21); + inotify_inode_mark_cachep = KMEM_CACHE(inotify_inode_mark, SLAB_PANIC); event_priv_cachep = KMEM_CACHE(inotify_event_private_data, SLAB_PANIC); diff --git a/include/linux/inotify.h b/include/linux/inotify.h index b74f2ef2c368..d33041e2a42a 100644 --- a/include/linux/inotify.h +++ b/include/linux/inotify.h @@ -73,6 +73,15 @@ struct inotify_event { #ifdef __KERNEL__ #include <linux/sysctl.h> extern struct ctl_table inotify_table[]; /* for sysctl */ + +#define ALL_INOTIFY_BITS (IN_ACCESS | IN_MODIFY | IN_ATTRIB | IN_CLOSE_WRITE | \ + IN_CLOSE_NOWRITE | IN_OPEN | IN_MOVED_FROM | \ + IN_MOVED_TO | IN_CREATE | IN_DELETE | \ + IN_DELETE_SELF | IN_MOVE_SELF | IN_UNMOUNT | \ + IN_Q_OVERFLOW | IN_IGNORED | IN_ONLYDIR | \ + IN_DONT_FOLLOW | IN_EXCL_UNLINK | IN_MASK_ADD | \ + IN_ISDIR | IN_ONESHOT) + #endif #endif /* _LINUX_INOTIFY_H */ |