diff options
Diffstat (limited to 'kernel/posix-timers.c')
| -rw-r--r-- | kernel/posix-timers.c | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c index 7a15afb73ed..35b4bbfc78f 100644 --- a/kernel/posix-timers.c +++ b/kernel/posix-timers.c @@ -241,7 +241,8 @@ static __init int init_posix_timers(void) register_posix_clock(CLOCK_MONOTONIC, &clock_monotonic); posix_timers_cache = kmem_cache_create("posix_timers_cache", - sizeof (struct k_itimer), 0, 0, NULL); + sizeof (struct k_itimer), 0, SLAB_PANIC, + NULL); idr_init(&posix_timers_id); return 0; } @@ -403,7 +404,7 @@ static struct task_struct * good_sigevent(sigevent_t * event) if ((event->sigev_notify & SIGEV_THREAD_ID ) && (!(rtn = find_task_by_pid(event->sigev_notify_thread_id)) || - rtn->tgid != current->tgid || + !same_thread_group(rtn, current) || (event->sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_SIGNAL)) return NULL; @@ -607,7 +608,7 @@ static struct k_itimer * lock_timer(timer_t timer_id, unsigned long *flags) spin_lock(&timr->it_lock); if ((timr->it_id != timer_id) || !(timr->it_process) || - timr->it_process->tgid != current->tgid) { + !same_thread_group(timr->it_process, current)) { spin_unlock(&timr->it_lock); spin_unlock_irqrestore(&idr_lock, *flags); timr = NULL; @@ -712,7 +713,7 @@ sys_timer_getoverrun(timer_t timer_id) { struct k_itimer *timr; int overrun; - long flags; + unsigned long flags; timr = lock_timer(timer_id, &flags); if (!timr) @@ -784,7 +785,7 @@ sys_timer_settime(timer_t timer_id, int flags, struct k_itimer *timr; struct itimerspec new_spec, old_spec; int error = 0; - long flag; + unsigned long flag; struct itimerspec *rtn = old_setting ? &old_spec : NULL; if (!new_setting) @@ -836,7 +837,7 @@ asmlinkage long sys_timer_delete(timer_t timer_id) { struct k_itimer *timer; - long flags; + unsigned long flags; retry_delete: timer = lock_timer(timer_id, &flags); @@ -980,9 +981,20 @@ sys_clock_getres(const clockid_t which_clock, struct timespec __user *tp) static int common_nsleep(const clockid_t which_clock, int flags, struct timespec *tsave, struct timespec __user *rmtp) { - return hrtimer_nanosleep(tsave, rmtp, flags & TIMER_ABSTIME ? - HRTIMER_MODE_ABS : HRTIMER_MODE_REL, - which_clock); + struct timespec rmt; + int ret; + + ret = hrtimer_nanosleep(tsave, rmtp ? &rmt : NULL, + flags & TIMER_ABSTIME ? + HRTIMER_MODE_ABS : HRTIMER_MODE_REL, + which_clock); + + if (ret && rmtp) { + if (copy_to_user(rmtp, &rmt, sizeof(*rmtp))) + return -EFAULT; + } + + return ret; } asmlinkage long |