diff options
Diffstat (limited to 'kernel/posix-cpu-timers.c')
| -rw-r--r-- | kernel/posix-cpu-timers.c | 23 |
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 = ¤t_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; } |