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Diffstat (limited to 'kernel/posix-cpu-timers.c')
-rw-r--r--kernel/posix-cpu-timers.c23
1 files changed, 14 insertions, 9 deletions
diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c
index abf6990c6eb5..520f6c59948d 100644
--- a/kernel/posix-cpu-timers.c
+++ b/kernel/posix-cpu-timers.c
@@ -1400,7 +1400,7 @@ void set_process_cpu_timer(struct task_struct *tsk, unsigned int clock_idx,
static long posix_cpu_clock_nanosleep_restart(struct restart_block *);
int posix_cpu_nsleep(const clockid_t which_clock, int flags,
- struct timespec *rqtp)
+ struct timespec *rqtp, struct timespec __user *rmtp)
{
struct restart_block *restart_block =
&current_thread_info()->restart_block;
@@ -1425,7 +1425,6 @@ int posix_cpu_nsleep(const clockid_t which_clock, int flags,
error = posix_cpu_timer_create(&timer);
timer.it_process = current;
if (!error) {
- struct timespec __user *rmtp;
static struct itimerspec zero_it;
struct itimerspec it = { .it_value = *rqtp,
.it_interval = {} };
@@ -1472,7 +1471,6 @@ int posix_cpu_nsleep(const clockid_t which_clock, int flags,
/*
* Report back to the user the time still remaining.
*/
- rmtp = (struct timespec __user *) restart_block->arg1;
if (rmtp != NULL && !(flags & TIMER_ABSTIME) &&
copy_to_user(rmtp, &it.it_value, sizeof *rmtp))
return -EFAULT;
@@ -1480,6 +1478,7 @@ int posix_cpu_nsleep(const clockid_t which_clock, int flags,
restart_block->fn = posix_cpu_clock_nanosleep_restart;
/* Caller already set restart_block->arg1 */
restart_block->arg0 = which_clock;
+ restart_block->arg1 = (unsigned long) rmtp;
restart_block->arg2 = rqtp->tv_sec;
restart_block->arg3 = rqtp->tv_nsec;
@@ -1493,10 +1492,15 @@ static long
posix_cpu_clock_nanosleep_restart(struct restart_block *restart_block)
{
clockid_t which_clock = restart_block->arg0;
- struct timespec t = { .tv_sec = restart_block->arg2,
- .tv_nsec = restart_block->arg3 };
+ struct timespec __user *rmtp;
+ struct timespec t;
+
+ rmtp = (struct timespec __user *) restart_block->arg1;
+ t.tv_sec = restart_block->arg2;
+ t.tv_nsec = restart_block->arg3;
+
restart_block->fn = do_no_restart_syscall;
- return posix_cpu_nsleep(which_clock, TIMER_ABSTIME, &t);
+ return posix_cpu_nsleep(which_clock, TIMER_ABSTIME, &t, rmtp);
}
@@ -1519,9 +1523,10 @@ static int process_cpu_timer_create(struct k_itimer *timer)
return posix_cpu_timer_create(timer);
}
static int process_cpu_nsleep(const clockid_t which_clock, int flags,
- struct timespec *rqtp)
+ struct timespec *rqtp,
+ struct timespec __user *rmtp)
{
- return posix_cpu_nsleep(PROCESS_CLOCK, flags, rqtp);
+ return posix_cpu_nsleep(PROCESS_CLOCK, flags, rqtp, rmtp);
}
static int thread_cpu_clock_getres(const clockid_t which_clock,
struct timespec *tp)
@@ -1539,7 +1544,7 @@ static int thread_cpu_timer_create(struct k_itimer *timer)
return posix_cpu_timer_create(timer);
}
static int thread_cpu_nsleep(const clockid_t which_clock, int flags,
- struct timespec *rqtp)
+ struct timespec *rqtp, struct timespec __user *rmtp)
{
return -EINVAL;
}