nanosleep() replacement

[Tim Rice]

I put together a nanosleep() for systems without it.

Please review/test before I commit.
It sems to make UnixWare and Open Server 5 happy.
My SCO Open Server 3 box broke so I can't test it there.

-------------< cut here >----------------
--- openssh/configure.ac.old	2003-03-09 17:16:43.000000000 -0800
+++ openssh/configure.ac	2003-03-16 15:38:28.520560008 -0800
@@ -1483,6 +1483,8 @@
 	have_struct_timeval=1
 fi
 
+AC_CHECK_TYPES(struct timespec)
+
 # If we don't have int64_t then we can't compile sftp-server.  So don't
 # even attempt to do it. 
 if test "x$ac_cv_have_int64_t" = "xno" -a \
--- openssh/openbsd-compat/bsd-misc.c.old	2003-01-19 19:21:01.000000000 -0800
+++ openssh/openbsd-compat/bsd-misc.c	2003-03-16 14:49:58.740480006 -0800
@@ -135,3 +135,34 @@
 }
 #endif 
 
+#if !defined(HAVE_NANOSLEEP) && !defined(HAVE_NSLEEP)
+int nanosleep(const struct timespec *req, struct timespec *rem)
+{
+	int rc;
+	extern int errno;
+	struct timeval tsave, ttmp, time2wait;
+
+	TIMESPEC_TO_TIMEVAL(&time2wait, req)
+
+	gettimeofday(&tsave, NULL);
+	rc = select(0, NULL, NULL, NULL, &time2wait);    
+	if (rc) {
+		gettimeofday (&ttmp, NULL);
+		ttmp.tv_sec -= tsave.tv_sec;
+		ttmp.tv_usec -= tsave.tv_usec;
+		tsave.tv_sec = (time2wait.tv_sec - ttmp.tv_sec);
+		tsave.tv_usec = (time2wait.tv_usec - ttmp.tv_usec);
+		if(tsave.tv_sec < 0){
+			tsave.tv_sec = 0;
+			tsave.tv_usec += 1000000L;
+		}
+		rc = -1;
+	}
+
+	TIMEVAL_TO_TIMESPEC(&tsave, rem)
+
+	return(rc);
+}
+
+#endif
+
--- openssh/openbsd-compat/bsd-misc.h.old	2002-06-20 20:35:30.000000000 -0700
+++ openssh/openbsd-compat/bsd-misc.h	2003-03-16 15:32:29.850560003 -0800
@@ -80,5 +80,14 @@
 int setgroups(size_t size, const gid_t *list);
 #endif
 
+#if !defined(HAVE_NANOSLEEP) && !defined(HAVE_NSLEEP)
+#ifndef HAVE_STRUCT_TIMESPEC
+struct timespec {
+	time_t	tv_sec;
+	long	tv_nsec;
+};
+#endif
+int nanosleep(const struct timespec *req, struct timespec *rem);
+#endif
 
 #endif /* _BSD_MISC_H */
-------------< end cut >----------------

-- 
Tim Rice				Multitalents	(707) 887-1469
tim at multitalents.net