1 files changed, 126 insertions, 0 deletions
diff --git a/usr.sbin/rtadvd/timer_subr.c b/usr.sbin/rtadvd/timer_subr.c
new file mode 100644
index 000000000000..2bebdd3f5685
--- /dev/null
+++ b/usr.sbin/rtadvd/timer_subr.c
@@ -0,0 +1,126 @@
+/*	$FreeBSD$	*/
+/*	$KAME: timer.c,v 1.9 2002/06/10 19:59:47 itojun Exp $	*/
+
+/*
+ * Copyright (C) 1998 WIDE Project.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/time.h>
+#include <sys/queue.h>
+#include <sys/socket.h>
+#include <syslog.h>
+#include <stdio.h>
+#include <inttypes.h>
+
+#include "timer.h"
+#include "timer_subr.h"
+
+struct timeval *
+rtadvd_timer_rest(struct rtadvd_timer *rat)
+{
+	static struct timeval returnval, now;
+
+	gettimeofday(&now, NULL);
+	if (TIMEVAL_LEQ(&rat->rat_tm, &now)) {
+		syslog(LOG_DEBUG,
+		    "<%s> a timer must be expired, but not yet",
+		    __func__);
+		returnval.tv_sec = returnval.tv_usec = 0;
+	}
+	else
+		TIMEVAL_SUB(&rat->rat_tm, &now, &returnval);
+
+	return (&returnval);
+}
+
+/* result = a + b */
+void
+TIMEVAL_ADD(struct timeval *a, struct timeval *b, struct timeval *result)
+{
+	long l;
+
+	if ((l = a->tv_usec + b->tv_usec) < MILLION) {
+		result->tv_usec = l;
+		result->tv_sec = a->tv_sec + b->tv_sec;
+	}
+	else {
+		result->tv_usec = l - MILLION;
+		result->tv_sec = a->tv_sec + b->tv_sec + 1;
+	}
+}
+
+/*
+ * result = a - b
+ * XXX: this function assumes that a >= b.
+ */
+void
+TIMEVAL_SUB(struct timeval *a, struct timeval *b, struct timeval *result)
+{
+	long l;
+
+	if ((l = a->tv_usec - b->tv_usec) >= 0) {
+		result->tv_usec = l;
+		result->tv_sec = a->tv_sec - b->tv_sec;
+	}
+	else {
+		result->tv_usec = MILLION + l;
+		result->tv_sec = a->tv_sec - b->tv_sec - 1;
+	}
+}
+
+char *
+sec2str(uint32_t s, char *buf)
+{
+	uint32_t day;
+	uint32_t hour;
+	uint32_t min;
+	uint32_t sec;
+	char *p;
+
+	min = s / 60;
+	sec = s % 60;
+
+	hour = min / 60;
+	min = min % 60;
+
+	day = hour / 24;
+	hour = hour % 24;
+
+	p = buf;
+	if (day > 0)
+		p += sprintf(p, "%" PRIu32 "d", day);
+	if (hour > 0)
+		p += sprintf(p, "%" PRIu32 "h", hour);
+	if (min > 0)
+		p += sprintf(p, "%" PRIu32 "m", min);
+
+	if ((p == buf) || (sec > 0 && p > buf))
+		sprintf(p, "%" PRIu32 "s", sec);
+
+	return (buf);
+}