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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>
This commit is contained in:
George G. Davis 2019-08-30 15:32:23 -04:00 committed by Shuah Khan
parent 88282297ff
commit a4864a33f5
1 changed files with 17 additions and 3 deletions
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20
tools/testing/selftests/watchdog/watchdog-test.c
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@ -19,7 +19,7 @@
int fd; int fd;
const char v = 'V'; const char v = 'V';
static const char sopts[] = "bdehp:t:Tn:NL"; static const char sopts[] = "bdehp:t:Tn:NLf:";
static const struct option lopts[] = { static const struct option lopts[] = {
{"bootstatus", no_argument, NULL, 'b'}, {"bootstatus", no_argument, NULL, 'b'},
{"disable", no_argument, NULL, 'd'}, {"disable", no_argument, NULL, 'd'},
@ -31,6 +31,7 @@ static const struct option lopts[] = {
{"pretimeout", required_argument, NULL, 'n'}, {"pretimeout", required_argument, NULL, 'n'},
{"getpretimeout", no_argument, NULL, 'N'}, {"getpretimeout", no_argument, NULL, 'N'},
{"gettimeleft", no_argument, NULL, 'L'}, {"gettimeleft", no_argument, NULL, 'L'},
{"file", required_argument, NULL, 'f'},
{NULL, no_argument, NULL, 0x0} {NULL, no_argument, NULL, 0x0}
}; };
@ -69,6 +70,8 @@ static void term(int sig)
static void usage(char *progname) static void usage(char *progname)
{ {
printf("Usage: %s [options]\n", progname); printf("Usage: %s [options]\n", progname);
printf(" -f, --file Open watchdog device file\n");
printf(" Default is /dev/watchdog\n");
printf(" -b, --bootstatus Get last boot status (Watchdog/POR)\n"); printf(" -b, --bootstatus Get last boot status (Watchdog/POR)\n");
printf(" -d, --disable Turn off the watchdog timer\n"); printf(" -d, --disable Turn off the watchdog timer\n");
printf(" -e, --enable Turn on the watchdog timer\n"); printf(" -e, --enable Turn on the watchdog timer\n");
@ -92,14 +95,20 @@ int main(int argc, char *argv[])
int ret; int ret;
int c; int c;
int oneshot = 0; int oneshot = 0;
char *file = "/dev/watchdog";
setbuf(stdout, NULL); setbuf(stdout, NULL);
fd = open("/dev/watchdog", O_WRONLY); while ((c = getopt_long(argc, argv, sopts, lopts, NULL)) != -1) {
if (c == 'f')
file = optarg;
}
fd = open(file, O_WRONLY);
if (fd == -1) { if (fd == -1) {
if (errno == ENOENT) if (errno == ENOENT)
printf("Watchdog device not enabled.\n"); printf("Watchdog device (%s) not found.\n", file);
else if (errno == EACCES) else if (errno == EACCES)
printf("Run watchdog as root.\n"); printf("Run watchdog as root.\n");
else else
@ -108,6 +117,8 @@ int main(int argc, char *argv[])
exit(-1); exit(-1);
} }
optind = 0;
while ((c = getopt_long(argc, argv, sopts, lopts, NULL)) != -1) { while ((c = getopt_long(argc, argv, sopts, lopts, NULL)) != -1) {
switch (c) { switch (c) {
case 'b': case 'b':
@ -190,6 +201,9 @@ int main(int argc, char *argv[])
else else
printf("WDIOC_GETTIMELEFT error '%s'\n", strerror(errno)); printf("WDIOC_GETTIMELEFT error '%s'\n", strerror(errno));
break; break;
case 'f':
/* Handled above */
break;
default: default:
usage(argv[0]); usage(argv[0]);