forked from luck/tmp_suning_uos_patched
ad19638463
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>
132 lines
3.2 KiB
C
132 lines
3.2 KiB
C
/*
|
|
* Dummy stubs used when CONFIG_POSIX_TIMERS=n
|
|
*
|
|
* Created by: Nicolas Pitre, July 2016
|
|
* Copyright: (C) 2016 Linaro Limited
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/linkage.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/syscalls.h>
|
|
#include <linux/ktime.h>
|
|
#include <linux/timekeeping.h>
|
|
#include <linux/posix-timers.h>
|
|
|
|
asmlinkage long sys_ni_posix_timers(void)
|
|
{
|
|
pr_err_once("process %d (%s) attempted a POSIX timer syscall "
|
|
"while CONFIG_POSIX_TIMERS is not set\n",
|
|
current->pid, current->comm);
|
|
return -ENOSYS;
|
|
}
|
|
|
|
#define SYS_NI(name) SYSCALL_ALIAS(sys_##name, sys_ni_posix_timers)
|
|
|
|
SYS_NI(timer_create);
|
|
SYS_NI(timer_gettime);
|
|
SYS_NI(timer_getoverrun);
|
|
SYS_NI(timer_settime);
|
|
SYS_NI(timer_delete);
|
|
SYS_NI(clock_adjtime);
|
|
SYS_NI(getitimer);
|
|
SYS_NI(setitimer);
|
|
#ifdef __ARCH_WANT_SYS_ALARM
|
|
SYS_NI(alarm);
|
|
#endif
|
|
|
|
/*
|
|
* We preserve minimal support for CLOCK_REALTIME and CLOCK_MONOTONIC
|
|
* as it is easy to remain compatible with little code. CLOCK_BOOTTIME
|
|
* is also included for convenience as at least systemd uses it.
|
|
*/
|
|
|
|
SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock,
|
|
const struct timespec __user *, tp)
|
|
{
|
|
struct timespec64 new_tp64;
|
|
struct timespec new_tp;
|
|
|
|
if (which_clock != CLOCK_REALTIME)
|
|
return -EINVAL;
|
|
if (copy_from_user(&new_tp, tp, sizeof (*tp)))
|
|
return -EFAULT;
|
|
|
|
new_tp64 = timespec_to_timespec64(new_tp);
|
|
return do_sys_settimeofday64(&new_tp64, NULL);
|
|
}
|
|
|
|
SYSCALL_DEFINE2(clock_gettime, const clockid_t, which_clock,
|
|
struct timespec __user *,tp)
|
|
{
|
|
struct timespec64 kernel_tp64;
|
|
struct timespec kernel_tp;
|
|
|
|
switch (which_clock) {
|
|
case CLOCK_REALTIME: ktime_get_real_ts64(&kernel_tp64); break;
|
|
case CLOCK_MONOTONIC: ktime_get_ts64(&kernel_tp64); break;
|
|
case CLOCK_BOOTTIME: get_monotonic_boottime64(&kernel_tp64); break;
|
|
default: return -EINVAL;
|
|
}
|
|
|
|
kernel_tp = timespec64_to_timespec(kernel_tp64);
|
|
if (copy_to_user(tp, &kernel_tp, sizeof (kernel_tp)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
SYSCALL_DEFINE2(clock_getres, const clockid_t, which_clock, struct timespec __user *, tp)
|
|
{
|
|
struct timespec rtn_tp = {
|
|
.tv_sec = 0,
|
|
.tv_nsec = hrtimer_resolution,
|
|
};
|
|
|
|
switch (which_clock) {
|
|
case CLOCK_REALTIME:
|
|
case CLOCK_MONOTONIC:
|
|
case CLOCK_BOOTTIME:
|
|
if (copy_to_user(tp, &rtn_tp, sizeof(rtn_tp)))
|
|
return -EFAULT;
|
|
return 0;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
SYSCALL_DEFINE4(clock_nanosleep, const clockid_t, which_clock, int, flags,
|
|
const struct timespec __user *, rqtp,
|
|
struct timespec __user *, rmtp)
|
|
{
|
|
struct timespec64 t64;
|
|
struct timespec t;
|
|
|
|
switch (which_clock) {
|
|
case CLOCK_REALTIME:
|
|
case CLOCK_MONOTONIC:
|
|
case CLOCK_BOOTTIME:
|
|
if (copy_from_user(&t, rqtp, sizeof (struct timespec)))
|
|
return -EFAULT;
|
|
t64 = timespec_to_timespec64(t);
|
|
if (!timespec64_valid(&t64))
|
|
return -EINVAL;
|
|
return hrtimer_nanosleep(&t64, rmtp, flags & TIMER_ABSTIME ?
|
|
HRTIMER_MODE_ABS : HRTIMER_MODE_REL,
|
|
which_clock);
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_COMPAT
|
|
long clock_nanosleep_restart(struct restart_block *restart_block)
|
|
{
|
|
return hrtimer_nanosleep_restart(restart_block);
|
|
}
|
|
#endif
|