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selftests: watchdog: Add optional file argument
Some systems have multiple watchdog devices where the first device registered is assigned to the /dev/watchdog device file. In order to test other watchdog devices, add an optional file argument for selecting non-default watchdog devices for testing. Tested-by: Eugeniu Rosca <erosca@de.adit-jv.com> Signed-off-by: George G. Davis <george_davis@mentor.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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@ -19,7 +19,7 @@
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int fd;
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const char v = 'V';
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static const char sopts[] = "bdehp:t:Tn:NL";
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static const char sopts[] = "bdehp:t:Tn:NLf:";
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static const struct option lopts[] = {
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{"bootstatus", no_argument, NULL, 'b'},
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{"disable", no_argument, NULL, 'd'},
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@ -31,6 +31,7 @@ static const struct option lopts[] = {
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{"pretimeout", required_argument, NULL, 'n'},
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{"getpretimeout", no_argument, NULL, 'N'},
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{"gettimeleft", no_argument, NULL, 'L'},
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{"file", required_argument, NULL, 'f'},
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{NULL, no_argument, NULL, 0x0}
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};
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@ -69,6 +70,8 @@ static void term(int sig)
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static void usage(char *progname)
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{
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printf("Usage: %s [options]\n", progname);
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printf(" -f, --file Open watchdog device file\n");
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printf(" Default is /dev/watchdog\n");
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printf(" -b, --bootstatus Get last boot status (Watchdog/POR)\n");
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printf(" -d, --disable Turn off the watchdog timer\n");
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printf(" -e, --enable Turn on the watchdog timer\n");
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@ -92,14 +95,20 @@ int main(int argc, char *argv[])
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int ret;
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int c;
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int oneshot = 0;
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char *file = "/dev/watchdog";
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setbuf(stdout, NULL);
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fd = open("/dev/watchdog", O_WRONLY);
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while ((c = getopt_long(argc, argv, sopts, lopts, NULL)) != -1) {
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if (c == 'f')
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file = optarg;
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}
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fd = open(file, O_WRONLY);
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if (fd == -1) {
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if (errno == ENOENT)
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printf("Watchdog device not enabled.\n");
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printf("Watchdog device (%s) not found.\n", file);
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else if (errno == EACCES)
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printf("Run watchdog as root.\n");
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else
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@ -108,6 +117,8 @@ int main(int argc, char *argv[])
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exit(-1);
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}
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optind = 0;
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while ((c = getopt_long(argc, argv, sopts, lopts, NULL)) != -1) {
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switch (c) {
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case 'b':
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@ -190,6 +201,9 @@ int main(int argc, char *argv[])
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else
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printf("WDIOC_GETTIMELEFT error '%s'\n", strerror(errno));
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break;
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case 'f':
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/* Handled above */
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break;
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default:
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usage(argv[0]);
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