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author | WANG Cong <xiyou.wangcong@gmail.com> | 2007-10-06 11:17:13 +0800 |
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committer | Wim Van Sebroeck <wim@iguana.be> | 2007-10-23 20:35:27 +0000 |
commit | 06063e26bc3ab62aa7aca874c6ce9e7638673838 (patch) | |
tree | cbccca8820548e9c21f753370b6ab0727c1c35c1 /Documentation/watchdog | |
parent | c283cf2c09ca1b7f1e7677bde384a8f92b1b7584 (diff) | |
download | kernel_samsung_crespo-06063e26bc3ab62aa7aca874c6ce9e7638673838.zip kernel_samsung_crespo-06063e26bc3ab62aa7aca874c6ce9e7638673838.tar.gz kernel_samsung_crespo-06063e26bc3ab62aa7aca874c6ce9e7638673838.tar.bz2 |
[WATCHDOG] Documentation/watchdog/src/watchdog-simple.c: improve this code
Make some improvements for Documentation/watchdog/src/watchdog-simple.c.
Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'Documentation/watchdog')
-rw-r--r-- | Documentation/watchdog/src/watchdog-simple.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/Documentation/watchdog/src/watchdog-simple.c b/Documentation/watchdog/src/watchdog-simple.c index 47801bc..4cf72f3 100644 --- a/Documentation/watchdog/src/watchdog-simple.c +++ b/Documentation/watchdog/src/watchdog-simple.c @@ -3,15 +3,25 @@ #include <unistd.h> #include <fcntl.h> -int main(int argc, const char *argv[]) { +int main(void) +{ int fd = open("/dev/watchdog", O_WRONLY); + int ret = 0; if (fd == -1) { perror("watchdog"); - exit(1); + exit(EXIT_FAILURE); } while (1) { - write(fd, "\0", 1); - fsync(fd); + ret = write(fd, "\0", 1); + if (ret != 1) { + ret = -1; + break; + } + ret = fsync(fd); + if (ret) + break; sleep(10); } + close(fd); + return ret; } |