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

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

diff --git a/src/bin/lttng/commands/add_context.c b/src/bin/lttng/commands/add_context.c
index 95fefa50c831486772eca28475a2612c0c10ed2d..82abc73332ad10b1117a7e95a954f39f4256108e 100644 (file)
--- a/src/bin/lttng/commands/add_context.c
+++ b/src/bin/lttng/commands/add_context.c
@@ -48,6 +48,7 @@ enum {
        OPT_HELP = 1,
        OPT_TYPE,
        OPT_USERSPACE,
+       OPT_LIST_OPTIONS,
 };
 
 static struct lttng_handle *handle;
@@ -149,6 +150,7 @@ static struct poptOption long_options[] = {
        {"userspace",      'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0},
 #endif
        {"type",           't', POPT_ARG_STRING, &opt_type, OPT_TYPE, 0, 0},
+       {"list-options",   0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
        {0, 0, 0, 0, 0, 0, 0}
 };
 
@@ -307,6 +309,7 @@ static void usage(FILE *ofp)
        fprintf(ofp, "\n");
        fprintf(ofp, "Options:\n");
        fprintf(ofp, "  -h, --help               Show this help\n");
+       fprintf(ofp, "      --list-options       Simple listing of options\n");
        fprintf(ofp, "  -s, --session            Apply on session name\n");
        fprintf(ofp, "  -c, --channel NAME       Apply on channel\n");
        fprintf(ofp, "  -e, --event NAME         Apply on event\n");
@@ -368,7 +371,7 @@ static int add_context(char *session_name)
                dom.type = LTTNG_DOMAIN_UST;
        } else {
                ERR("Please specify a tracer (-k/--kernel or -u/--userspace)");
-               ret = CMD_NOT_IMPLEMENTED;
+               ret = CMD_UNDEFINED;
                goto error;
        }
 
@@ -463,6 +466,10 @@ int cmd_add_context(int argc, const char **argv)
                        opt_cmd_name = poptGetOptArg(pc);
 #endif
                        break;
+               case OPT_LIST_OPTIONS:
+                       list_cmd_options(stdout, long_options);
+                       ret = CMD_SUCCESS;
+                       goto end;
                default:
                        usage(stderr);
                        ret = CMD_UNDEFINED;