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Commit 5f82b2b7 authored by Thomas Gleixner's avatar Thomas Gleixner Committed by Linus Torvalds
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[PATCH] hrtimer: create and use timespec_valid macro 



add timespec_valid(ts) [returns false if the timespec is denorm]

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 2a698971

include/linux/time.h

+6 −0
Original line number Diff line number Diff line
@@ -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;

kernel/posix-timers.c

+2 −3
Original line number Diff line number Diff line
@@ -712,8 +712,7 @@ sys_timer_create(const clockid_t which_clock, 
 */

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;



	/*