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Avoid passing along a timespec with a negative number of seconds if

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the current time plus the caller-supplied time to sleep wraps the
time_t. Instead, sleep until INT_MAX.
This commit is contained in:
nathanw 2005-04-19 16:38:57 +00:00
parent d8ecca20ed
commit 5f7a108732
1 changed files with 10 additions and 2 deletions
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12
lib/libpthread/pthread_sleep.c
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@ -1,4 +1,4 @@
/* $NetBSD: pthread_sleep.c,v 1.6 2005/01/06 17:33:36 mycroft Exp $ */
/* $NetBSD: pthread_sleep.c,v 1.7 2005/04/19 16:38:57 nathanw Exp $ */
/*-
* Copyright (c) 2003 The NetBSD Foundation, Inc.
@ -37,9 +37,10 @@
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: pthread_sleep.c,v 1.6 2005/01/06 17:33:36 mycroft Exp $");
__RCSID("$NetBSD: pthread_sleep.c,v 1.7 2005/04/19 16:38:57 nathanw Exp $");
#include <errno.h>
#include <limits.h>
#include <sys/time.h>
#include "pthread.h"
@ -100,6 +101,13 @@ nanosleep(const struct timespec *rqtp, struct timespec *rmtp)
*/
clock_gettime(CLOCK_REALTIME, &sleeptime);
timespecadd(&sleeptime, rqtp, &sleeptime);
/*
* Adding a caller-supplied value to the current time can wrap
* the time_t, which will be rejected by the kernel. Cap the
* value if that happens.
*/
if (sleeptime.tv_sec < 0)
sleeptime.tv_sec = INT_MAX;
do {
pthread_spinlock(self, &pt_nanosleep_lock);