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authorRandy Dunlap <rdunlap@xenotime.net>2006-05-21 20:58:10 -0700
committerWim Van Sebroeck <wim@iguana.be>2006-06-28 21:24:11 +0200
commit56fb9e5346b99bc6b77def79b3739097bc13ea8a (patch)
tree157e54d73ade3b65018c809a2f4109cdafeec658 /Documentation/watchdog/watchdog-api.txt
parentdfc7bd9c385a888851a2d009ba272099549f98cc (diff)
downloadlinux-56fb9e5346b99bc6b77def79b3739097bc13ea8a.tar.bz2
[WATCHDOG] Documentation/watchdog update
Documentation/watchdog/: Expose example and tool source files in the Documentation/ directory in their own files instead of being buried (almost hidden) in readme/txt files. This will make them more visible/usable to users who may need to use them, to developers who may need to test with them, and to janitors who would update them if they were more visible. Also, if any of these possibly should not be in the kernel tree at all, it will be clearer that they are here and we can discuss if they should be removed. Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Signed-off-by: Andrew Morton <akpm@osdl.org>
Diffstat (limited to 'Documentation/watchdog/watchdog-api.txt')
-rw-r--r--Documentation/watchdog/watchdog-api.txt17
1 files changed, 1 insertions, 16 deletions
diff --git a/Documentation/watchdog/watchdog-api.txt b/Documentation/watchdog/watchdog-api.txt
index d738ec25eaa4..958ff3d48be3 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.