From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755247AbdKJWpU (ORCPT ); Fri, 10 Nov 2017 17:45:20 -0500 Received: from mail-qt0-f196.google.com ([209.85.216.196]:43421 "EHLO mail-qt0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754742AbdKJWny (ORCPT ); Fri, 10 Nov 2017 17:43:54 -0500 X-Google-Smtp-Source: AGs4zMbBnVtJXHor07UmeSzwWdEzQ3stg2ODpLv5l/9siRWpSj7HOuzQNOhFQ4qezZp6TYDGZmRVug== 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 4/9] posix-clocks: Enable compat syscalls always Date: Fri, 10 Nov 2017 14:42:54 -0800 Message-Id: <20171110224259.15930-5-deepa.kernel@gmail.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20171110224259.15930-1-deepa.kernel@gmail.com> References: <20171110224259.15930-1-deepa.kernel@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 funtions with clock_nanosleep. But, there is no plan to provide y2038 safe solution for nanosleep. Signed-off-by: Deepa Dinamani --- kernel/time/hrtimer.c | 3 --- kernel/time/posix-stubs.c | 2 +- kernel/time/posix-timers.c | 10 ++++------ 3 files changed, 5 insertions(+), 10 deletions(-) diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c index d32520840fde..e7db66af5a23 100644 --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -1557,8 +1557,6 @@ SYSCALL_DEFINE2(nanosleep, struct timespec __user *, rqtp, return hrtimer_nanosleep(&tu, HRTIMER_MODE_REL, CLOCK_MONOTONIC); } -#ifdef CONFIG_COMPAT - COMPAT_SYSCALL_DEFINE2(nanosleep, struct compat_timespec __user *, rqtp, struct compat_timespec __user *, rmtp) { @@ -1574,7 +1572,6 @@ COMPAT_SYSCALL_DEFINE2(nanosleep, struct compat_timespec __user *, rqtp, current->restart_block.nanosleep.compat_rmtp = rmtp; return hrtimer_nanosleep(&tu, HRTIMER_MODE_REL, CLOCK_MONOTONIC); } -#endif /* * Functions related to boot-time initialization: diff --git a/kernel/time/posix-stubs.c b/kernel/time/posix-stubs.c index b258bee13b02..b2dc97a39c35 100644 --- a/kernel/time/posix-stubs.c +++ b/kernel/time/posix-stubs.c @@ -148,6 +148,7 @@ COMPAT_SYS_NI(timer_settime); COMPAT_SYS_NI(timer_gettime); COMPAT_SYS_NI(getitimer); COMPAT_SYS_NI(setitimer); +#endif COMPAT_SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock, struct compat_timespec __user *, tp) @@ -224,4 +225,3 @@ COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags, HRTIMER_MODE_ABS : HRTIMER_MODE_REL, which_clock); } -#endif diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c index 13d6881f908b..0650ec27a673 100644 --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c @@ -1107,8 +1107,6 @@ SYSCALL_DEFINE2(clock_getres, const clockid_t, which_clock, return error; } -#ifdef CONFIG_COMPAT - COMPAT_SYSCALL_DEFINE2(clock_settime, clockid_t, which_clock, struct compat_timespec __user *, tp) { @@ -1142,6 +1140,8 @@ COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock, return err; } +#ifdef CONFIG_COMPAT + COMPAT_SYSCALL_DEFINE2(clock_adjtime, clockid_t, which_clock, struct compat_timex __user *, utp) { @@ -1166,6 +1166,8 @@ COMPAT_SYSCALL_DEFINE2(clock_adjtime, clockid_t, which_clock, return err; } +#endif + COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock, struct compat_timespec __user *, tp) { @@ -1183,8 +1185,6 @@ COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock, return err; } -#endif - /* * nanosleep for monotonic and realtime clocks */ @@ -1221,7 +1221,6 @@ SYSCALL_DEFINE4(clock_nanosleep, const clockid_t, which_clock, int, flags, return kc->nsleep(which_clock, flags, &t); } -#ifdef CONFIG_COMPAT COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags, struct compat_timespec __user *, rqtp, struct compat_timespec __user *, rmtp) @@ -1246,7 +1245,6 @@ 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 = { .clock_getres = posix_get_hrtimer_res, -- 2.11.0