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Date: Wed, 29 Jul 2015 20:16:27 +0800 From: Baolin Wang <baolin.wang@...aro.org> To: tglx@...utronix.de Cc: arnd@...db.de, john.stultz@...aro.org, heenasirwani@...il.com, pang.xunlei@...aro.org, mingo@...nel.org, peterz@...radead.org, linux-kernel@...r.kernel.org, baolin.wang@...aro.org, y2038@...ts.linaro.org Subject: [PATCH v2 4/5] time: Introduce do_sys_settimeofday64() The do_sys_settimeofday() function uses a timespec, which is not year 2038 safe on 32bit systems. Thus this patch introduces do_sys_settimeofday64(), which allows us to transition users of do_sys_settimeofday() to using 64bit time types. Signed-off-by: Baolin Wang <baolin.wang@...aro.org> --- include/linux/timekeeping.h | 15 +++++++++++++-- kernel/time/time.c | 8 ++++---- 2 files changed, 17 insertions(+), 6 deletions(-) diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h index 657ea03..dc60400 100644 --- a/include/linux/timekeeping.h +++ b/include/linux/timekeeping.h @@ -11,8 +11,19 @@ extern int timekeeping_suspended; */ extern void do_gettimeofday(struct timeval *tv); extern int do_settimeofday64(const struct timespec64 *ts); -extern int do_sys_settimeofday(const struct timespec *tv, - const struct timezone *tz); +extern int do_sys_settimeofday64(const struct timespec64 *tv, + const struct timezone *tz); +static inline int do_sys_settimeofday(const struct timespec *tv, + const struct timezone *tz) +{ + struct timespec64 ts64; + + if (!tv) + return -EINVAL; + + ts64 = timespec_to_timespec64(*tv); + return do_sys_settimeofday64(&ts64, tz); +} /* * Kernel time accessors diff --git a/kernel/time/time.c b/kernel/time/time.c index 85d5bb1..5d00da4 100644 --- a/kernel/time/time.c +++ b/kernel/time/time.c @@ -160,15 +160,15 @@ static inline void warp_clock(void) * various programs will get confused when the clock gets warped. */ -int do_sys_settimeofday(const struct timespec *tv, const struct timezone *tz) +int do_sys_settimeofday64(const struct timespec64 *tv, const struct timezone *tz) { static int firsttime = 1; int error = 0; - if (tv && !timespec_valid(tv)) + if (tv && !timespec64_valid(tv)) return -EINVAL; - error = security_settime(tv, tz); + error = security_settime64(tv, tz); if (error) return error; @@ -186,7 +186,7 @@ int do_sys_settimeofday(const struct timespec *tv, const struct timezone *tz) } } if (tv) - return do_settimeofday(tv); + return do_settimeofday64(tv); return 0; } -- 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/
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