* [merged] proc-add-lsm-hook-checks-to-proc-tid-timerslack_ns.patch removed from -mm tree
@ 2016-10-10 22:57 akpm
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From: akpm @ 2016-10-10 22:57 UTC (permalink / raw)
To: john.stultz, arjan, ccross, dimitrysh, enh, jmorris, kandoiruchi,
keescook, kernel-team, nnk, orenl, romlem, serge, tglx, tkjos,
mm-commits
The patch titled
Subject: proc: add LSM hook checks to /proc/<tid>/timerslack_ns
has been removed from the -mm tree. Its filename was
proc-add-lsm-hook-checks-to-proc-tid-timerslack_ns.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: John Stultz <john.stultz@linaro.org>
Subject: proc: add LSM hook checks to /proc/<tid>/timerslack_ns
As requested, this patch checks the existing LSM hooks
task_getscheduler/task_setscheduler when reading or modifying the task's
timerslack value.
Previous versions added new get/settimerslack LSM hooks, but since they
checked the same PROCESS__SET/GETSCHED values as existing hooks, it was
suggested we just use the existing ones.
Link: http://lkml.kernel.org/r/1469132667-17377-2-git-send-email-john.stultz@linaro.org
Signed-off-by: John Stultz <john.stultz@linaro.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: "Serge E. Hallyn" <serge@hallyn.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Oren Laadan <orenl@cellrox.com>
Cc: Ruchi Kandoi <kandoiruchi@google.com>
Cc: Rom Lemarchand <romlem@android.com>
Cc: Todd Kjos <tkjos@google.com>
Cc: Colin Cross <ccross@android.com>
Cc: Nick Kralevich <nnk@google.com>
Cc: Dmitry Shmidt <dimitrysh@google.com>
Cc: Elliott Hughes <enh@google.com>
Cc: James Morris <jmorris@namei.org>
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
fs/proc/base.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff -puN fs/proc/base.c~proc-add-lsm-hook-checks-to-proc-tid-timerslack_ns fs/proc/base.c
--- a/fs/proc/base.c~proc-add-lsm-hook-checks-to-proc-tid-timerslack_ns
+++ a/fs/proc/base.c
@@ -2285,6 +2285,12 @@ static ssize_t timerslack_ns_write(struc
goto out;
}
+ err = security_task_setscheduler(p);
+ if (err) {
+ count = err;
+ goto out;
+ }
+
task_lock(p);
if (slack_ns == 0)
p->timer_slack_ns = p->default_timer_slack_ns;
@@ -2313,6 +2319,10 @@ static int timerslack_ns_show(struct seq
goto out;
}
+ err = security_task_getscheduler(p);
+ if (err)
+ goto out;
+
task_lock(p);
seq_printf(m, "%llu\n", p->timer_slack_ns);
task_unlock(p);
_
Patches currently in -mm which might be from john.stultz@linaro.org are
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2016-10-10 22:57 [merged] proc-add-lsm-hook-checks-to-proc-tid-timerslack_ns.patch removed from -mm tree akpm
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