tests: (test_mkfds) add --is-available option

Signed-off-by: Masatake YAMATO <yamato@redhat.com>

diff --git a/tests/helpers/test_mkfds.c b/tests/helpers/test_mkfds.c
index 78360f7fa593409971c9cbd2db50693cbe15a025..0335224e29b59f362198f0d03e16ccf7fc5e6009 100644 (file)
--- a/tests/helpers/test_mkfds.c
+++ b/tests/helpers/test_mkfds.c
@@ -81,6 +81,7 @@ static void __attribute__((__noreturn__)) usage(FILE *out, int status)
        fprintf(out, " %s [options] FACTORY FD... [PARAM=VAL...]\n", program_invocation_short_name);
 
        fputs("\nOptions:\n", out);
+       fputs(" -a, --is-available <factory>  exit 0 if the factory is available\n", out);
        fputs(" -l, --list                    list available file descriptor factories and exit\n", out);
        fputs(" -I, --parameters <factory>    list parameters the factory takes\n", out);
        fputs(" -r, --comm <name>             rename self\n", out);
@@ -4202,6 +4203,15 @@ static void list_multiplexers(void)
                puts(multiplexers[i].name);
 }
 
+static bool is_available(const char *factory)
+{
+       for (size_t i = 0; i < ARRAY_SIZE(factories); i++)
+               if (strcmp(factories[i].name, factory) == 0)
+                       return true;
+
+       return false;
+}
+
 int main(int argc, char **argv)
 {
        int c;
@@ -4215,6 +4225,7 @@ int main(int argc, char **argv)
        struct multiplexer *wait_event = NULL;
 
        static const struct option longopts[] = {
+               { "is-available",required_argument,NULL, 'a' },
                { "list",       no_argument, NULL, 'l' },
                { "parameters", required_argument, NULL, 'I' },
                { "comm",       required_argument, NULL, 'r' },
@@ -4227,10 +4238,12 @@ int main(int argc, char **argv)
                { NULL, 0, NULL, 0 },
        };
 
-       while ((c = getopt_long(argc, argv, "lhqcI:r:w:WX", longopts, NULL)) != -1) {
+       while ((c = getopt_long(argc, argv, "a:lhqcI:r:w:WX", longopts, NULL)) != -1) {
                switch (c) {
                case 'h':
                        usage(stdout, EXIT_SUCCESS);
+               case 'a':
+                       exit(is_available(optarg)? 0: 1);
                case 'l':
                        list_factories();
                        exit(EXIT_SUCCESS);