Add a '--list-options' option to each command.

[lttng-tools.git] / src / bin / lttng / commands / list.c

diff --git a/src/bin/lttng/commands/list.c b/src/bin/lttng/commands/list.c
index f09edaef474ce76660fd67aad1867d42bc7b4550..743b79ff2431f826ec2d623fe1957c834bff0a0d 100644 (file)
--- a/src/bin/lttng/commands/list.c
+++ b/src/bin/lttng/commands/list.c
@@ -43,6 +43,7 @@ const char *indent8 = "        ";
 enum {
        OPT_HELP = 1,
        OPT_USERSPACE,
+       OPT_LIST_OPTIONS,
 };
 
 static struct lttng_handle *handle;
@@ -60,6 +61,7 @@ static struct poptOption long_options[] = {
 #endif
        {"channel",   'c', POPT_ARG_STRING, &opt_channel, 0, 0, 0},
        {"domain",    'd', POPT_ARG_VAL, &opt_domain, 1, 0, 0},
+       {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
        {0, 0, 0, 0, 0, 0, 0}
 };
 
@@ -76,6 +78,7 @@ static void usage(FILE *ofp)
        fprintf(ofp, "With -u alone, list available userspace events\n");
        fprintf(ofp, "\n");
        fprintf(ofp, "  -h, --help              Show this help\n");
+       fprintf(ofp, "      --list-options       Simple listing of options\n");
        fprintf(ofp, "  -k, --kernel            Select kernel domain\n");
        fprintf(ofp, "  -u, --userspace         Select user-space domain.\n");
 #if 0
@@ -556,6 +559,10 @@ int cmd_list(int argc, const char **argv)
                case OPT_USERSPACE:
                        opt_userspace = 1;
                        break;
+               case OPT_LIST_OPTIONS:
+                       list_cmd_options(stdout, long_options);
+                       ret = CMD_SUCCESS;
+                       goto end;
                default:
                        usage(stderr);
                        ret = CMD_UNDEFINED;