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Diffstat (limited to 'kernel/time/posix-timers.c')
-rw-r--r--kernel/time/posix-timers.c102
1 files changed, 35 insertions, 67 deletions
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index bd62b5eeb5a0..29176635991f 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -1,34 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
- * linux/kernel/posix-timers.c
- *
- *
* 2002-10-15 Posix Clocks & timers
* by George Anzinger george@mvista.com
- *
* Copyright (C) 2002 2003 by MontaVista Software.
*
* 2004-06-01 Fix CLOCK_REALTIME clock/timer TIMER_ABSTIME bug.
* Copyright (C) 2004 Boris Hu
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
-
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * MontaVista Software | 1237 East Arques Avenue | Sunnyvale | CA 94085 | USA
- */
-
-/* These are all the functions necessary to implement
- * POSIX clocks & timers
+ * These are all the functions necessary to implement POSIX clocks & timers
*/
#include <linux/mm.h>
#include <linux/interrupt.h>
@@ -200,7 +179,7 @@ static int posix_clock_realtime_set(const clockid_t which_clock,
}
static int posix_clock_realtime_adj(const clockid_t which_clock,
- struct timex *t)
+ struct __kernel_timex *t)
{
return do_adjtimex(t);
}
@@ -289,9 +268,6 @@ static void common_hrtimer_rearm(struct k_itimer *timr)
{
struct hrtimer *timer = &timr->it.real.timer;
- if (!timr->it_interval)
- return;
-
timr->it_overrun += hrtimer_forward(timer, timer->base->get_time(),
timr->it_interval);
hrtimer_restart(timer);
@@ -317,7 +293,7 @@ void posixtimer_rearm(struct kernel_siginfo *info)
if (!timr)
return;
- if (timr->it_requeue_pending == info->si_sys_private) {
+ if (timr->it_interval && timr->it_requeue_pending == info->si_sys_private) {
timr->kclock->timer_rearm(timr);
timr->it_active = 1;
@@ -754,8 +730,8 @@ SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id,
#ifdef CONFIG_COMPAT_32BIT_TIME
-COMPAT_SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id,
- struct old_itimerspec32 __user *, setting)
+SYSCALL_DEFINE2(timer_gettime32, timer_t, timer_id,
+ struct old_itimerspec32 __user *, setting)
{
struct itimerspec64 cur_setting;
@@ -927,9 +903,9 @@ SYSCALL_DEFINE4(timer_settime, timer_t, timer_id, int, flags,
}
#ifdef CONFIG_COMPAT_32BIT_TIME
-COMPAT_SYSCALL_DEFINE4(timer_settime, timer_t, timer_id, int, flags,
- struct old_itimerspec32 __user *, new,
- struct old_itimerspec32 __user *, old)
+SYSCALL_DEFINE4(timer_settime32, timer_t, timer_id, int, flags,
+ struct old_itimerspec32 __user *, new,
+ struct old_itimerspec32 __user *, old)
{
struct itimerspec64 new_spec, old_spec;
struct itimerspec64 *rtn = old ? &old_spec : NULL;
@@ -1071,22 +1047,28 @@ SYSCALL_DEFINE2(clock_gettime, const clockid_t, which_clock,
return error;
}
-SYSCALL_DEFINE2(clock_adjtime, const clockid_t, which_clock,
- struct timex __user *, utx)
+int do_clock_adjtime(const clockid_t which_clock, struct __kernel_timex * ktx)
{
const struct k_clock *kc = clockid_to_kclock(which_clock);
- struct timex ktx;
- int err;
if (!kc)
return -EINVAL;
if (!kc->clock_adj)
return -EOPNOTSUPP;
+ return kc->clock_adj(which_clock, ktx);
+}
+
+SYSCALL_DEFINE2(clock_adjtime, const clockid_t, which_clock,
+ struct __kernel_timex __user *, utx)
+{
+ struct __kernel_timex ktx;
+ int err;
+
if (copy_from_user(&ktx, utx, sizeof(ktx)))
return -EFAULT;
- err = kc->clock_adj(which_clock, &ktx);
+ err = do_clock_adjtime(which_clock, &ktx);
if (err >= 0 && copy_to_user(utx, &ktx, sizeof(ktx)))
return -EFAULT;
@@ -1114,8 +1096,8 @@ SYSCALL_DEFINE2(clock_getres, const clockid_t, which_clock,
#ifdef CONFIG_COMPAT_32BIT_TIME
-COMPAT_SYSCALL_DEFINE2(clock_settime, clockid_t, which_clock,
- struct old_timespec32 __user *, tp)
+SYSCALL_DEFINE2(clock_settime32, clockid_t, which_clock,
+ struct old_timespec32 __user *, tp)
{
const struct k_clock *kc = clockid_to_kclock(which_clock);
struct timespec64 ts;
@@ -1129,8 +1111,8 @@ COMPAT_SYSCALL_DEFINE2(clock_settime, clockid_t, which_clock,
return kc->clock_set(which_clock, &ts);
}
-COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock,
- struct old_timespec32 __user *, tp)
+SYSCALL_DEFINE2(clock_gettime32, clockid_t, which_clock,
+ struct old_timespec32 __user *, tp)
{
const struct k_clock *kc = clockid_to_kclock(which_clock);
struct timespec64 ts;
@@ -1147,40 +1129,26 @@ 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)
+SYSCALL_DEFINE2(clock_adjtime32, clockid_t, which_clock,
+ struct old_timex32 __user *, utp)
{
- const struct k_clock *kc = clockid_to_kclock(which_clock);
- struct timex ktx;
+ struct __kernel_timex ktx;
int err;
- if (!kc)
- return -EINVAL;
- if (!kc->clock_adj)
- return -EOPNOTSUPP;
-
- err = compat_get_timex(&ktx, utp);
+ err = get_old_timex32(&ktx, utp);
if (err)
return err;
- err = kc->clock_adj(which_clock, &ktx);
+ err = do_clock_adjtime(which_clock, &ktx);
if (err >= 0)
- err = compat_put_timex(utp, &ktx);
+ err = put_old_timex32(utp, &ktx);
return err;
}
-#endif
-
-#ifdef CONFIG_COMPAT_32BIT_TIME
-
-COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock,
- struct old_timespec32 __user *, tp)
+SYSCALL_DEFINE2(clock_getres_time32, clockid_t, which_clock,
+ struct old_timespec32 __user *, tp)
{
const struct k_clock *kc = clockid_to_kclock(which_clock);
struct timespec64 ts;
@@ -1236,9 +1204,9 @@ SYSCALL_DEFINE4(clock_nanosleep, const clockid_t, which_clock, int, flags,
#ifdef CONFIG_COMPAT_32BIT_TIME
-COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags,
- struct old_timespec32 __user *, rqtp,
- struct old_timespec32 __user *, rmtp)
+SYSCALL_DEFINE4(clock_nanosleep_time32, clockid_t, which_clock, int, flags,
+ struct old_timespec32 __user *, rqtp,
+ struct old_timespec32 __user *, rmtp)
{
const struct k_clock *kc = clockid_to_kclock(which_clock);
struct timespec64 t;
generated by cgit (git 2.34.1) at 2025-05-29 16:15:27 +0000