X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fprocd.git;a=blobdiff_plain;f=watchdog.c;h=592ae7e74f771472ef7a670f8badbac1084d4ed5;hp=e4b82f5a8fc2526b8b14954251ca3f3a4892a61d;hb=2c9f5d4af1559b840c42f1443ede9f9fe809c58b;hpb=89eec0d61e15bd3c3cd83d24a17fa5894ae984c1

diff --git a/watchdog.c b/watchdog.c
index e4b82f5..592ae7e 100644
--- a/watchdog.c
+++ b/watchdog.c
@@ -32,11 +32,16 @@ static struct uloop_timeout wdt_timeout;
 static int wdt_fd = -1;
 static int wdt_frequency = 5;
 
-static void watchdog_timeout_cb(struct uloop_timeout *t)
+void watchdog_ping(void)
 {
-	DEBUG(2, "Ping\n");
-	if (write(wdt_fd, "X", 1) < 0)
+	DEBUG(4, "Ping\n");
+	if (wdt_fd >= 0 && write(wdt_fd, "X", 1) < 0)
 		ERROR("WDT failed to write: %s\n", strerror(errno));
+}
+
+static void watchdog_timeout_cb(struct uloop_timeout *t)
+{
+	watchdog_ping();
 	uloop_timeout_set(t, wdt_frequency * 1000);
 }
 
@@ -59,7 +64,7 @@ int watchdog_timeout(int timeout)
 		return 0;
 
 	if (timeout) {
-		DEBUG(2, "Set watchdog timeout: %ds\n", timeout);
+		DEBUG(4, "Set watchdog timeout: %ds\n", timeout);
 		ioctl(wdt_fd, WDIOC_SETTIMEOUT, &timeout);
 	}
 	ioctl(wdt_fd, WDIOC_GETTIMEOUT, &timeout);
@@ -73,7 +78,7 @@ int watchdog_frequency(int frequency)
 		return 0;
 
 	if (frequency) {
-		DEBUG(2, "Set watchdog frequency: %ds\n", frequency);
+		DEBUG(4, "Set watchdog frequency: %ds\n", frequency);
 		wdt_frequency = frequency;
 	}
 
@@ -91,25 +96,40 @@ char* watchdog_fd(void)
 	return fd_buf;
 }
 
-void watchdog_init(void)
+void watchdog_init(int preinit)
 {
 	char *env = getenv("WDTFD");
 
+	if (wdt_fd >= 0)
+		return;
 
 	wdt_timeout.cb = watchdog_timeout_cb;
 	if (env) {
-		DEBUG(1, "Watchdog handover: fd=%s\n", env);
+		DEBUG(2, "Watchdog handover: fd=%s\n", env);
 		wdt_fd = atoi(env);
 		unsetenv("WDTFD");
 	} else {
 		wdt_fd = open("/dev/watchdog", O_WRONLY);
 	}
+
 	if (wdt_fd < 0)
 		return;
-	fcntl(wdt_fd, F_SETFD, fcntl(wdt_fd, F_GETFD) | FD_CLOEXEC);
+
+	if (!preinit)
+		fcntl(wdt_fd, F_SETFD, fcntl(wdt_fd, F_GETFD) | FD_CLOEXEC);
+
 	LOG("- watchdog -\n");
 	watchdog_timeout(30);
 	watchdog_timeout_cb(&wdt_timeout);
 
-	DEBUG(2, "Opened watchdog with timeout %ds\n", watchdog_timeout(0));
+	DEBUG(4, "Opened watchdog with timeout %ds\n", watchdog_timeout(0));
+}
+
+
+void watchdog_no_cloexec(void)
+{
+	if (wdt_fd < 0)
+		return;
+
+	fcntl(wdt_fd, F_SETFD, fcntl(wdt_fd, F_GETFD) & ~FD_CLOEXEC);
 }