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Don't return EINVAL for negative timespecs in the nanosleep functions.

Browse source 
Negative timespecs are perfectly valid.  Just return 0 immediately
for them.  Also, return 0 immediately for zero timespecs.

Fixed some style bugs.
This commit is contained in:
Bruce Evans 1997-08-26 00:40:04 +00:00
parent c9c3deeddc
commit 7d7fb492c5
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=28773
1 changed files with 9 additions and 12 deletions
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21
sys/kern/kern_time.c
View file

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)kern_time.c 8.1 (Berkeley) 6/10/93
* $Id: kern_time.c,v 1.31 1997/08/13 17:55:11 ache Exp $
* $Id: kern_time.c,v 1.32 1997/08/14 08:15:12 ache Exp $
*/
#include <sys/param.h>
@ -61,10 +61,10 @@ struct timezone tz;
* timers when they expire.
*/
static int settime __P((struct timeval *));
static void timevalfix __P((struct timeval *));
static int nanosleep1 __P((struct proc *p, struct timespec *rqt,
struct timespec *rmt));
static int settime __P((struct timeval *));
static void timevalfix __P((struct timeval *));
static int
settime(tv)
@ -213,8 +213,10 @@ nanosleep1(p, rqt, rmt)
struct timeval atv, utv, rtv;
int error, s, timo, i, n;
if (rqt->tv_sec < 0 || rqt->tv_nsec < 0 || rqt->tv_nsec >= 1000000000)
if (rqt->tv_nsec < 0 || rqt->tv_nsec >= 1000000000)
return (EINVAL);
if (rqt->tv_sec < 0 || rqt->tv_sec == 0 && rqt->tv_nsec == 0)
return (0);
TIMESPEC_TO_TIMEVAL(&atv, rqt)
if (itimerfix(&atv)) {
@ -225,9 +227,7 @@ nanosleep1(p, rqt, rmt)
} else
n = 0;
for (i = 0, error = EWOULDBLOCK;
i <= n && error == EWOULDBLOCK;
i++) {
for (i = 0, error = EWOULDBLOCK; i <= n && error == EWOULDBLOCK; i++) {
if (n > 0) {
if (i == n)
atv = rtv;
@ -248,7 +248,6 @@ nanosleep1(p, rqt, rmt)
p->p_sleepend = &atv;
error = tsleep(&nanowait, PWAIT | PCATCH, "nanslp", timo);
p->p_sleepend = NULL;
if (error == ERESTART)
error = EINTR;
if (rmt != NULL && (i == n || error != EWOULDBLOCK)) {
@ -306,9 +305,7 @@ nanosleep(p, uap, retval)
if (SCARG(uap, rmtp))
if (!useracc((caddr_t)SCARG(uap, rmtp), sizeof(rmt), B_WRITE))
return (EFAULT);
error = nanosleep1(p, &rqt, &rmt);
if (SCARG(uap, rmtp)) {
error2 = copyout(&rmt, SCARG(uap, rmtp), sizeof(rmt));
if (error2) /* XXX shouldn't happen, did useracc() above */
@ -347,13 +344,14 @@ signanosleep(p, uap, retval)
if (error)
return (error);
/* See kern_sig.c:sigsuspend() for explanation */
/* See kern_sig.c:sigsuspend() for explanation. */
ps->ps_oldmask = p->p_sigmask;
ps->ps_flags |= SAS_OLDMASK;
p->p_sigmask = mask &~ sigcantmask;
error = nanosleep1(p, &rqt, &rmt);
/* See kern_sig.c:sigsuspend() again. */
p->p_sigmask = ps->ps_oldmask; /* in case timeout rather than sig */
ps->ps_flags &= ~SAS_OLDMASK;
@ -363,7 +361,6 @@ signanosleep(p, uap, retval)
return (error2);
}
return (error);
}
#ifndef _SYS_SYSPROTO_H_