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authorTimur Tabi <timur@codeaurora.org>2016-06-21 18:00:14 -0500
committerWim Van Sebroeck <wim@iguana.be>2016-07-17 21:02:29 +0200
commitee279c2734b07fb74031b1626b0f097cee9de5c8 (patch)
tree346ff165845200e1db5ccd6d97c479f6a8e1d8a5
parent334da2d6753ba548851c6329c4b6e74eb731368a (diff)
Documentation/watchdog: use stdout instead of stderr in watchdog-test
The watchdog-test utility outputs all messages to stderr, even those that are not error messages. Output to stdout instead. Instead of flushing the output after every write, just disabled the output buffer. Also display a dot for every ping of the watchdog, so that the user knows that it's working. Signed-off-by: Timur Tabi <timur@codeaurora.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
-rw-r--r--Documentation/watchdog/src/watchdog-test.c28
1 files changed, 12 insertions, 16 deletions
diff --git a/Documentation/watchdog/src/watchdog-test.c b/Documentation/watchdog/src/watchdog-test.c
index fcdde8fc98be..b3cc7aa12a72 100644
--- a/Documentation/watchdog/src/watchdog-test.c
+++ b/Documentation/watchdog/src/watchdog-test.c
@@ -23,6 +23,7 @@ static void keep_alive(void)
{
int dummy;
+ printf(".");
ioctl(fd, WDIOC_KEEPALIVE, &dummy);
}
@@ -34,7 +35,7 @@ static void keep_alive(void)
static void term(int sig)
{
close(fd);
- fprintf(stderr, "Stopping watchdog ticks...\n");
+ printf("\nStopping watchdog ticks...\n");
exit(0);
}
@@ -43,11 +44,12 @@ int main(int argc, char *argv[])
int flags;
unsigned int ping_rate = 1;
+ setbuf(stdout, NULL);
+
fd = open("/dev/watchdog", O_WRONLY);
if (fd == -1) {
- fprintf(stderr, "Watchdog device not enabled.\n");
- fflush(stderr);
+ printf("Watchdog device not enabled.\n");
exit(-1);
}
@@ -55,36 +57,30 @@ int main(int argc, char *argv[])
if (!strncasecmp(argv[1], "-d", 2)) {
flags = WDIOS_DISABLECARD;
ioctl(fd, WDIOC_SETOPTIONS, &flags);
- fprintf(stderr, "Watchdog card disabled.\n");
- fflush(stderr);
+ printf("Watchdog card disabled.\n");
goto end;
} else if (!strncasecmp(argv[1], "-e", 2)) {
flags = WDIOS_ENABLECARD;
ioctl(fd, WDIOC_SETOPTIONS, &flags);
- fprintf(stderr, "Watchdog card enabled.\n");
- fflush(stderr);
+ printf("Watchdog card enabled.\n");
goto end;
} else if (!strncasecmp(argv[1], "-t", 2) && argv[2]) {
flags = atoi(argv[2]);
ioctl(fd, WDIOC_SETTIMEOUT, &flags);
- fprintf(stderr, "Watchdog timeout set to %u seconds.\n", flags);
- fflush(stderr);
+ printf("Watchdog timeout set to %u seconds.\n", flags);
goto end;
} else if (!strncasecmp(argv[1], "-p", 2) && argv[2]) {
ping_rate = strtoul(argv[2], NULL, 0);
- fprintf(stderr, "Watchdog ping rate set to %u seconds.\n", ping_rate);
- fflush(stderr);
+ printf("Watchdog ping rate set to %u seconds.\n", ping_rate);
} else {
- fprintf(stderr, "-d to disable, -e to enable, -t <n> to set " \
+ printf("-d to disable, -e to enable, -t <n> to set " \
"the timeout,\n-p <n> to set the ping rate, and \n");
- fprintf(stderr, "run by itself to tick the card.\n");
- fflush(stderr);
+ printf("run by itself to tick the card.\n");
goto end;
}
}
- fprintf(stderr, "Watchdog Ticking Away!\n");
- fflush(stderr);
+ printf("Watchdog Ticking Away!\n");
signal(SIGINT, term);