Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753029AbbFAL5Y (ORCPT ); Mon, 1 Jun 2015 07:57:24 -0400 Received: from mail-pd0-f174.google.com ([209.85.192.174]:35797 "EHLO mail-pd0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752907AbbFAL5C (ORCPT ); Mon, 1 Jun 2015 07:57:02 -0400 From: Baolin Wang To: tglx@linutronix.de Cc: arnd@arndb.de, linux-kernel@vger.kernel.org, baolin.wang@linaro.org, y2038@lists.linaro.org Subject: [PATCH v4 11/25] posix-timers:Change the implementation for clock_settime syscall function Date: Mon, 1 Jun 2015 19:56:48 +0800 Message-Id: <1433159808-4962-1-git-send-email-baolin.wang@linaro.org> X-Mailer: git-send-email 1.7.9.5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1596 Lines: 52 This patch splits out the guts of the clock_settime syscall and changes the clock_settime syscall implementation to prepare the converting to 64bit methods for the clock_settime syscall function in posix-timers.c file. Signed-off-by: Baolin Wang --- 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 c034a53..9912745 100644 --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c @@ -1082,19 +1082,25 @@ 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@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/