linux-kernel - [PATCH v5 10/24] posix-timers: Factor out the guts of 'clock

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <86d96792c8550430ad18c86686407c00cb1ccaa6.1434079263.git.baolin.wang@linaro.org>
Date:	Fri, 12 Jun 2015 15:48:25 +0800
From:	Baolin Wang <baolin.wang@...aro.org>
To:	tglx@...utronix.de
Cc:	arnd@...db.de, linux-kernel@...r.kernel.org,
	baolin.wang@...aro.org, y2038@...ts.linaro.org
Subject: [PATCH v5 10/24] posix-timers: Factor out the guts of 'clock_settime' for reusing

In order to reuse the very same logic for the year 2038 safe syscalls
which we need to introduce for 32bit system, factor out the guts of
the 'clock_settime' syscall.

Signed-off-by: Baolin Wang <baolin.wang@...aro.org>
---
 kernel/time/posix-timers.c |   14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index 778610c..65610ac 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -1089,19 +1089,25 @@ void exit_itimers(struct signal_struct *sig)
 	}
 }
 
-SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock,
-		const struct timespec __user *, tp)
+static int __clock_settime(clockid_t which_clock, struct timespec *ts)
 {
 	struct k_clock *kc = clockid_to_kclock(which_clock);
-	struct timespec new_tp;
 
 	if (!kc || !kc->clock_set)
 		return -EINVAL;
 
+	return kc->clock_set(which_clock, ts);
+}
+
+SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock,
+		const struct timespec __user *, tp)
+{
+	struct timespec new_tp;
+
 	if (copy_from_user(&new_tp, tp, sizeof (*tp)))
 		return -EFAULT;
 
-	return kc->clock_set(which_clock, &new_tp);
+	return __clock_settime(which_clock, &new_tp);
 }
 
 SYSCALL_DEFINE2(clock_gettime, const clockid_t, which_clock,
-- 
1.7.9.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/