Add an example on how to use sysmon watchdogs in rump.

share/examples/rump/swwdog_arm/Makefile

@@ -0,0 +1,14 @@
+#	$NetBSD: Makefile,v 1.1 2010/01/31 03:11:55 pooka Exp $
+#
+
+PROG=	swwdog_arm
+
+LDADD+=	-lrumpdev_sysmon -lrumpdev
+LDADD+=	-lrumpvfs -lrump
+LDADD+=	-lrumpuser -lpthread
+
+DBG=	-g
+NOMAN=	
+WARNS=	4
+
+.include <bsd.prog.mk>

share/examples/rump/swwdog_arm/swwdog_arm.c

@@ -0,0 +1,91 @@
+/*	$NetBSD: swwdog_arm.c,v 1.1 2010/01/31 03:11:55 pooka Exp $	*/
+
+/*
+ * Copyright (c) 2010 Antti Kantee.  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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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/types.h>
+#include <sys/wdog.h>
+
+#include <rump/rump.h>
+#include <rump/rump_syscalls.h>
+
+#include <assert.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+int
+main(void)
+{
+	char wname[WDOG_NAMESIZE];
+	struct wdog_conf wc;
+	struct wdog_mode wm;
+	int fd;
+	extern int rumpns_swwdog_reboot;
+
+	rumpns_swwdog_reboot = 1;
+	rump_init();
+
+	fd = rump_sys_open("/dev/watchdog", O_RDWR);
+	if (fd == -1)
+		err(1, "open watchdog");
+
+	wc.wc_count = 1;
+	wc.wc_names = wname;
+
+	if (rump_sys_ioctl(fd, WDOGIOC_GWDOGS, &wc) == -1)
+		err(1, "can't fetch watchdog names");
+
+	if (wc.wc_count) {
+		assert(wc.wc_count == 1);
+		printf("watchdog available: %s\n", wc.wc_names);
+
+		printf("enabling watchdog with 2s period\n");
+		strlcpy(wm.wm_name, wc.wc_names, sizeof(wm.wm_name));
+		wm.wm_mode = WDOG_MODE_ETICKLE;
+		wm.wm_period = 2;
+		if (rump_sys_ioctl(fd, WDOGIOC_SMODE, &wm) == -1)
+			err(1, "failed to set tickle\n");
+
+		printf("sleep 1s, then tickle tickle\n");
+		sleep(1);
+		rump_sys_ioctl(fd, WDOGIOC_TICKLE);
+
+		printf("sleep 1s, then tickle tickle\n");
+		sleep(1);
+		rump_sys_ioctl(fd, WDOGIOC_TICKLE);
+
+		printf("now, \"forgetting\" to tickle the doggie\n");
+		sleep(3);
+	} else {
+		printf("no puppies\n");
+	}
+
+	return 0;
+}