add basic --help
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bc91e51d43
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6dde29a0c9
@ -128,6 +128,28 @@ static char **find_mounts (regex_t *node_regex, regex_t *fstype_regex,
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# error "Operating system not supported!"
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#endif
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#define getoptstring "F:N:S:fnrhV"
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static struct option longopts[] = {
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{ "fstype-regex", 1, NULL, 'F'},
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{ "node-regex", 1, NULL, 'N'},
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{ "skip-regex", 1, NULL, 'S'},
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{ "fstype", 0, NULL, 'f'},
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{ "node", 0, NULL, 'n'},
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{ "reverse", 0, NULL, 'r'},
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{ "help", 0, NULL, 'h'},
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{ NULL, 0, NULL, 0}
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};
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static void usage (int exit_status)
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{
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int i;
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printf ("Usage: mountinfo [options]\n\n");
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printf ("Options:\n");
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for (i = 0; longopts[i].name; ++i)
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printf (" -%c, --%s\n", longopts[i].val, longopts[i].name);
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exit (exit_status);
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}
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int main (int argc, char **argv)
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{
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int i;
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@ -144,17 +166,7 @@ int main (int argc, char **argv)
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char **mounts = NULL;
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char c;
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static struct option longopts[] = {
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{ "fstype-regex", 1, NULL, 'F'},
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{ "node-regex", 1, NULL, 'N'},
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{ "skip-regex", 1, NULL, 'S'},
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{ "fstype", 0, NULL, 'f'},
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{ "node", 0, NULL, 'n'},
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{ "reverse", 0, NULL, 'r'},
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{ NULL, 0, NULL, 0}
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};
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while ((c = getopt_long (argc, argv, "F:N:S:fnr",
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while ((c = getopt_long (argc, argv, getoptstring,
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longopts, (int *) 0)) != -1)
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switch (c) {
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case 'F':
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@ -207,8 +219,11 @@ int main (int argc, char **argv)
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reverse = true;
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break;
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case 'h':
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usage (EXIT_SUCCESS);
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default:
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exit (EXIT_FAILURE);
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usage (EXIT_FAILURE);
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}
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while (optind < argc) {
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@ -241,4 +256,3 @@ int main (int argc, char **argv)
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exit (result);
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}
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