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time: Change k_clock nsleep() to use timespec64

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struct timespec is not y2038 safe on 32 bit machines.  Replace uses of
struct timespec with struct timespec64 in the kernel.

The syscall interfaces themselves will be changed in a separate series.

Note that the restart_block parameter for nanosleep has also been left
unchanged and will be part of syscall series noted above.

Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Cc: y2038@lists.linaro.org
Cc: john.stultz@linaro.org
Cc: arnd@arndb.de
Link: http://lkml.kernel.org/r/1490555058-4603-8-git-send-email-deepa.kernel@gmail.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Deepa Dinamani
2017-03-26 12:04:18 -07:00
committed by Thomas Gleixner
parent 5f252b3256
commit ad19638463
8 changed files with 44 additions and 35 deletions
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10
kernel/time/posix-timers.c
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@@ -130,7 +130,7 @@ static struct k_clock posix_clocks[MAX_CLOCKS];
/*
* These ones are defined below.
*/
static int common_nsleep(const clockid_t, int flags, struct timespec *t,
static int common_nsleep(const clockid_t, int flags, struct timespec64 *t,
struct timespec __user *rmtp);
static int common_timer_create(struct k_itimer *new_timer);
static void common_timer_get(struct k_itimer *, struct itimerspec64 *);
@@ -1099,7 +1099,7 @@ SYSCALL_DEFINE2(clock_getres, const clockid_t, which_clock,
* nanosleep for monotonic and realtime clocks
*/
static int common_nsleep(const clockid_t which_clock, int flags,
struct timespec *tsave, struct timespec __user *rmtp)
struct timespec64 *tsave, struct timespec __user *rmtp)
{
return hrtimer_nanosleep(tsave, rmtp, flags & TIMER_ABSTIME ?
HRTIMER_MODE_ABS : HRTIMER_MODE_REL,
@@ -1111,6 +1111,7 @@ SYSCALL_DEFINE4(clock_nanosleep, const clockid_t, which_clock, int, flags,
struct timespec __user *, rmtp)
{
struct k_clock *kc = clockid_to_kclock(which_clock);
struct timespec64 t64;
struct timespec t;
if (!kc)
@@ -1121,10 +1122,11 @@ SYSCALL_DEFINE4(clock_nanosleep, const clockid_t, which_clock, int, flags,
if (copy_from_user(&t, rqtp, sizeof (struct timespec)))
return -EFAULT;
if (!timespec_valid(&t))
t64 = timespec_to_timespec64(t);
if (!timespec64_valid(&t64))
return -EINVAL;
return kc->nsleep(which_clock, flags, &t, rmtp);
return kc->nsleep(which_clock, flags, &t64, rmtp);
}
/*