summaryrefslogtreecommitdiffstats
path: root/samples/watchdog/watchdog-simple.c
diff options
context:
space:
mode:
Diffstat (limited to 'samples/watchdog/watchdog-simple.c')
-rw-r--r--samples/watchdog/watchdog-simple.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/samples/watchdog/watchdog-simple.c b/samples/watchdog/watchdog-simple.c
new file mode 100644
index 0000000000..9ce66d2ca2
--- /dev/null
+++ b/samples/watchdog/watchdog-simple.c
@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+int main(void)
+{
+ int fd = open("/dev/watchdog", O_WRONLY);
+ int ret = 0;
+ if (fd == -1) {
+ perror("watchdog");
+ exit(EXIT_FAILURE);
+ }
+ while (1) {
+ ret = write(fd, "\0", 1);
+ if (ret != 1) {
+ ret = -1;
+ break;
+ }
+ sleep(10);
+ }
+ close(fd);
+ return ret;
+}