aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--include/linux/time.h6
-rw-r--r--kernel/posix-timers.c5
2 files changed, 8 insertions, 3 deletions
diff --git a/include/linux/time.h b/include/linux/time.h
index 4d49cabb9b4..64e79746458 100644
--- a/include/linux/time.h
+++ b/include/linux/time.h
@@ -44,6 +44,12 @@ extern unsigned long mktime(const unsigned int year, const unsigned int mon,
extern void set_normalized_timespec(struct timespec *ts, time_t sec, long nsec);
+/*
+ * Returns true if the timespec is norm, false if denorm:
+ */
+#define timespec_valid(ts) \
+ (((ts)->tv_sec >= 0) && (((unsigned) (ts)->tv_nsec) < NSEC_PER_SEC))
+
extern struct timespec xtime;
extern struct timespec wall_to_monotonic;
extern seqlock_t xtime_lock;
diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c
index 69d5a4b5395..6b851a1bf4b 100644
--- a/kernel/posix-timers.c
+++ b/kernel/posix-timers.c
@@ -712,8 +712,7 @@ out:
*/
static int good_timespec(const struct timespec *ts)
{
- if ((!ts) || (ts->tv_sec < 0) ||
- ((unsigned) ts->tv_nsec >= NSEC_PER_SEC))
+ if ((!ts) || !timespec_valid(ts))
return 0;
return 1;
}
@@ -1406,7 +1405,7 @@ sys_clock_nanosleep(const clockid_t which_clock, int flags,
if (copy_from_user(&t, rqtp, sizeof (struct timespec)))
return -EFAULT;
- if ((unsigned) t.tv_nsec >= NSEC_PER_SEC || t.tv_sec < 0)
+ if (!timespec_valid(&t))
return -EINVAL;
/*