[PATCH] inotify: add MOVE_SELF event

This adds a MOVE_SELF event to inotify.  It is sent whenever the inode
you are watching is moved.  We need this event so that we can catch
something like this:

 - app1:
	watch /etc/mtab

 - app2:
	cp /etc/mtab /tmp/mtab-work
	mv /etc/mtab /etc/mtab~
	mv /tmp/mtab-work /etc/mtab

app1 still thinks it's watching /etc/mtab but it's actually watching
/etc/mtab~.

Signed-off-by: John McCutchan <ttb@tentacle.dhs.org>
Signed-off-by: Robert Love <rml@novell.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/include/linux/inotify.h b/include/linux/inotify.h
index a40c2bf0408e..93bb3afe646b 100644
--- a/include/linux/inotify.h
+++ b/include/linux/inotify.h
@@ -35,6 +35,7 @@ struct inotify_event {
 #define IN_CREATE               0x00000100      /* Subfile was created */
 #define IN_DELETE               0x00000200      /* Subfile was deleted */
 #define IN_DELETE_SELF          0x00000400      /* Self was deleted */
+#define IN_MOVE_SELF            0x00000800      /* Self was moved */
 
 /* the following are legal events.  they are sent as needed to any watch */
 #define IN_UNMOUNT              0x00002000      /* Backing fs was unmounted */
@@ -56,7 +57,8 @@ struct inotify_event {
  */
 #define IN_ALL_EVENTS   (IN_ACCESS | IN_MODIFY | IN_ATTRIB | IN_CLOSE_WRITE | \
                          IN_CLOSE_NOWRITE | IN_OPEN | IN_MOVED_FROM | \
-                         IN_MOVED_TO | IN_DELETE | IN_CREATE | IN_DELETE_SELF)
+                         IN_MOVED_TO | IN_DELETE | IN_CREATE | IN_DELETE_SELF | \
+                         IN_MOVE_SELF)
 
 #ifdef __KERNEL__