Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751759AbeAPCUU (ORCPT + 1 other); Mon, 15 Jan 2018 21:20:20 -0500 Received: from mail-pg0-f65.google.com ([74.125.83.65]:42539 "EHLO mail-pg0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751475AbeAPCTH (ORCPT ); Mon, 15 Jan 2018 21:19:07 -0500 X-Google-Smtp-Source: ACJfBot/8sEXNA3FF8mn6zPEr/g2hTNezBKgOdeOTfNS9bdEVfAe+nmu5We/7mFsQSW7XkUdcBYA6g== From: Deepa Dinamani To: tglx@linutronix.de, john.stultz@linaro.org Cc: linux-kernel@vger.kernel.org, arnd@arndb.de, y2038@lists.linaro.org Subject: [PATCH v3 06/10] posix-clocks: Make compat syscalls depend on CONFIG_COMPAT_32BIT_TIME Date: Mon, 15 Jan 2018 18:18:14 -0800 Message-Id: <20180116021818.24791-7-deepa.kernel@gmail.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20180116021818.24791-1-deepa.kernel@gmail.com> References: <20180116021818.24791-1-deepa.kernel@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Return-Path: clock_gettime, clock_settime, clock_getres and clock_nanosleep compat syscalls are also repurposed to provide backward compatibility to support 32 bit time_t on 32 bit systems. Note that nanosleep compat syscall will also be treated the same way as the above syscalls as it shares common handler functions with clock_nanosleep. But, there is no plan to provide y2038 safe solution for nanosleep. Signed-off-by: Deepa Dinamani --- kernel/time/hrtimer.c | 2 +- kernel/time/posix-stubs.c | 2 ++ kernel/time/posix-timers.c | 14 ++++++++++++-- 3 files changed, 15 insertions(+), 3 deletions(-) diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c index 6d8183b38e35..65cc7272d954 100644 --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -1556,7 +1556,7 @@ SYSCALL_DEFINE2(nanosleep, struct timespec __user *, rqtp, return hrtimer_nanosleep(&tu, HRTIMER_MODE_REL, CLOCK_MONOTONIC); } -#ifdef CONFIG_COMPAT +#ifdef CONFIG_COMPAT_32BIT_TIME COMPAT_SYSCALL_DEFINE2(nanosleep, struct compat_timespec __user *, rqtp, struct compat_timespec __user *, rmtp) diff --git a/kernel/time/posix-stubs.c b/kernel/time/posix-stubs.c index b258bee13b02..0645cfa93609 100644 --- a/kernel/time/posix-stubs.c +++ b/kernel/time/posix-stubs.c @@ -148,7 +148,9 @@ COMPAT_SYS_NI(timer_settime); COMPAT_SYS_NI(timer_gettime); COMPAT_SYS_NI(getitimer); COMPAT_SYS_NI(setitimer); +#endif +#ifdef CONFIG_COMPAT_32BIT_TIME COMPAT_SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock, struct compat_timespec __user *, tp) { diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c index ec999f32c840..673525f98ecf 100644 --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c @@ -1112,7 +1112,7 @@ SYSCALL_DEFINE2(clock_getres, const clockid_t, which_clock, return error; } -#ifdef CONFIG_COMPAT +#ifdef CONFIG_COMPAT_32BIT_TIME COMPAT_SYSCALL_DEFINE2(clock_settime, clockid_t, which_clock, struct compat_timespec __user *, tp) @@ -1147,6 +1147,10 @@ COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock, return err; } +#endif + +#ifdef CONFIG_COMPAT + COMPAT_SYSCALL_DEFINE2(clock_adjtime, clockid_t, which_clock, struct compat_timex __user *, utp) { @@ -1171,6 +1175,10 @@ COMPAT_SYSCALL_DEFINE2(clock_adjtime, clockid_t, which_clock, return err; } +#endif + +#ifdef CONFIG_COMPAT_32BIT_TIME + COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock, struct compat_timespec __user *, tp) { @@ -1226,7 +1234,8 @@ SYSCALL_DEFINE4(clock_nanosleep, const clockid_t, which_clock, int, flags, return kc->nsleep(which_clock, flags, &t); } -#ifdef CONFIG_COMPAT +#ifdef CONFIG_COMPAT_32BIT_TIME + COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags, struct compat_timespec __user *, rqtp, struct compat_timespec __user *, rmtp) @@ -1251,6 +1260,7 @@ COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags, return kc->nsleep(which_clock, flags, &t); } + #endif static const struct k_clock clock_realtime = { -- 2.14.1