X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fbin%2Flttng%2Fcommands%2Fenable_channels.c;h=03de5241d59c6536578c328113704c40867262c5;hb=dad47fc4c65ec0acbfedc676895833b465d25cd6;hp=5443d78a3c8826138cf9e3813de8ea88936befa8;hpb=1ab1ea0b77d5fc71765e06b5c84431e403e8bd2e;p=lttng-tools.git

diff --git a/src/bin/lttng/commands/enable_channels.c b/src/bin/lttng/commands/enable_channels.c
index 5443d78a3..03de5241d 100644
--- a/src/bin/lttng/commands/enable_channels.c
+++ b/src/bin/lttng/commands/enable_channels.c
@@ -48,6 +48,7 @@ enum {
 	OPT_SWITCH_TIMER,
 	OPT_READ_TIMER,
 	OPT_USERSPACE,
+	OPT_LIST_OPTIONS,
 };
 
 static struct lttng_handle *handle;
@@ -70,6 +71,7 @@ static struct poptOption long_options[] = {
 	{"num-subbuf",     0,   POPT_ARG_INT, 0, OPT_NUM_SUBBUF, 0, 0},
 	{"switch-timer",   0,   POPT_ARG_INT, 0, OPT_SWITCH_TIMER, 0, 0},
 	{"read-timer",     0,   POPT_ARG_INT, 0, OPT_READ_TIMER, 0, 0},
+	{"list-options",   0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
 	{0, 0, 0, 0, 0, 0, 0}
 };
 
@@ -81,6 +83,7 @@ static void usage(FILE *ofp)
 	fprintf(ofp, "usage: lttng enable-channel NAME[,NAME2,...] [options] [channel_options]\n");
 	fprintf(ofp, "\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, "  -k, --kernel             Apply on the kernel tracer\n");
 #if 0
@@ -159,7 +162,7 @@ static int enable_channel(char *session_name)
 		dom.type = LTTNG_DOMAIN_UST;
 	} else {
 		ERR("Please specify a tracer (-k/--kernel or -u/--userspace)");
-		ret = CMD_UNDEFINED;
+		ret = CMD_ERROR;
 		goto error;
 	}
 
@@ -258,6 +261,10 @@ int cmd_enable_channels(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;