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Diffstat (limited to 'Documentation/watchdog/watchdog-api.txt')
-rw-r--r-- | Documentation/watchdog/watchdog-api.txt | 17 |
1 files changed, 1 insertions, 16 deletions
diff --git a/Documentation/watchdog/watchdog-api.txt b/Documentation/watchdog/watchdog-api.txt index d738ec25eaa..958ff3d48be 100644 --- a/Documentation/watchdog/watchdog-api.txt +++ b/Documentation/watchdog/watchdog-api.txt @@ -34,22 +34,7 @@ activates as soon as /dev/watchdog is opened and will reboot unless the watchdog is pinged within a certain time, this time is called the timeout or margin. The simplest way to ping the watchdog is to write some data to the device. So a very simple watchdog daemon would look -like this: - -#include <stdlib.h> -#include <fcntl.h> - -int main(int argc, const char *argv[]) { - int fd=open("/dev/watchdog",O_WRONLY); - if (fd==-1) { - perror("watchdog"); - exit(1); - } - while(1) { - write(fd, "\0", 1); - sleep(10); - } -} +like this source file: see Documentation/watchdog/src/watchdog-simple.c A more advanced driver could for example check that a HTTP server is still responding before doing the write call to ping the watchdog. |