linux-stable/ipc
Waiman Long 8c81ddd2ac ipc: IPCMNI limit check for semmni
For SysV semaphores, the semmni value is the last part of the 4-element
sem number array.  To make semmni behave in a similar way to msgmni and
shmmni, we can't directly use the _minmax handler.  Instead, a special sem
specific handler is added to check the last argument to make sure that it
is limited to the [0, IPCMNI] range.  An error will be returned if this is
not the case.

Link: http://lkml.kernel.org/r/1536352137-12003-3-git-send-email-longman@redhat.com
Signed-off-by: Waiman Long <longman@redhat.com>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kees Cook <keescook@chromium.org>
Cc: Luis R. Rodriguez <mcgrof@kernel.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-10-31 08:54:14 -07:00
..
compat.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ipc_sysctl.c ipc: IPCMNI limit check for semmni 2018-10-31 08:54:14 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mq_sysctl.c ipc: convert use of typedef ctl_table to struct ctl_table 2014-06-06 16:08:16 -07:00
mqueue.c Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-25 11:14:36 -07:00
msg.c y2038: globally rename compat_time to old_time32 2018-08-27 14:48:48 +02:00
msgutil.c ipc: convert ipc_namespace.count from atomic_t to refcount_t 2017-09-08 18:26:51 -07:00
namespace.c ipc: simplify ipc initialization 2018-08-22 10:52:52 -07:00
sem.c y2038: globally rename compat_time to old_time32 2018-08-27 14:48:48 +02:00
shm.c Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-25 11:14:36 -07:00
syscall.c y2038: globally rename compat_time to old_time32 2018-08-27 14:48:48 +02:00
util.c ipc/util.c: update return value of ipc_getref from int to bool 2018-08-22 10:52:52 -07:00
util.h ipc: IPCMNI limit check for semmni 2018-10-31 08:54:14 -07:00