linux/fs/notify/fanotify
Lino Sanfilippo 66ba93c0d7 fanotify: don't set FAN_ONDIR implicitly on a marks ignored mask
Currently FAN_ONDIR is always set on a mark's ignored mask when the
event mask is extended without FAN_MARK_ONDIR being set.  This may
result in events for directories being ignored unexpectedly for call
sequences like

  fanotify_mark(fd, FAN_MARK_ADD, FAN_OPEN | FAN_ONDIR , AT_FDCWD, "dir");
  fanotify_mark(fd, FAN_MARK_ADD, FAN_CLOSE, AT_FDCWD, "dir");

Also FAN_MARK_ONDIR is only honored when adding events to a mark's mask,
but not for event removal.  Fix both issues by not setting FAN_ONDIR
implicitly on the ignore mask any more.  Instead treat FAN_ONDIR as any
other event flag and require FAN_MARK_ONDIR to be set by the user for
both event mask and ignore mask.  Furthermore take FAN_MARK_ONDIR into
account when set for event removal.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Lino Sanfilippo <LinoSanfilippo@gmx.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Eric Paris <eparis@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-10 14:30:28 -08:00
..
fanotify_user.c fanotify: don't set FAN_ONDIR implicitly on a marks ignored mask 2015-02-10 14:30:28 -08:00
fanotify.c fanotify: don't set FAN_ONDIR implicitly on a marks ignored mask 2015-02-10 14:30:28 -08:00
fanotify.h fanotify: use fanotify event structure for permission response processing 2014-04-03 16:20:51 -07:00
Kconfig treewide: fix typo of "suport" in various comments and Kconfig 2012-11-19 14:16:09 +01:00
Makefile fanotify: fanotify_init syscall declaration 2010-07-28 09:58:55 -04:00