diff options
Diffstat (limited to 'kernel/time/alarmtimer.c')
| -rw-r--r-- | kernel/time/alarmtimer.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c index d859a3601ddd..57bcf94ee132 100644 --- a/kernel/time/alarmtimer.c +++ b/kernel/time/alarmtimer.c @@ -27,6 +27,7 @@ #include <linux/posix-timers.h> #include <linux/workqueue.h> #include <linux/freezer.h> +#include <linux/compat.h> #include "posix-timers.h" @@ -691,7 +692,7 @@ static enum alarmtimer_restart alarmtimer_nsleep_wakeup(struct alarm *alarm, static int alarmtimer_do_nsleep(struct alarm *alarm, ktime_t absexp, enum alarmtimer_type type) { - struct timespec __user *rmtp; + struct restart_block *restart; alarm->data = (void *)current; do { set_current_state(TASK_INTERRUPTIBLE); @@ -709,8 +710,8 @@ static int alarmtimer_do_nsleep(struct alarm *alarm, ktime_t absexp, if (freezing(current)) alarmtimer_freezerset(absexp, type); - rmtp = current->restart_block.nanosleep.rmtp; - if (rmtp) { + restart = ¤t->restart_block; + if (restart->nanosleep.type != TT_NONE) { struct timespec rmt; ktime_t rem; @@ -720,7 +721,14 @@ static int alarmtimer_do_nsleep(struct alarm *alarm, ktime_t absexp, return 0; rmt = ktime_to_timespec(rem); - if (copy_to_user(rmtp, &rmt, sizeof(*rmtp))) +#ifdef CONFIG_COMPAT + if (restart->nanosleep.type == TT_COMPAT) { + if (compat_put_timespec(&rmt, + restart->nanosleep.compat_rmtp)) + return -EFAULT; + } else +#endif + if (copy_to_user(restart->nanosleep.rmtp, &rmt, sizeof(rmt))) return -EFAULT; } return -ERESTART_RESTARTBLOCK; |