X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fbin%2Flttng%2Fcommands%2Fdisable_channels.c;h=d861b37704a67aa52d01473cc04032eb2b67e96e;hb=94e60b1f03ae2c3c9450ffc3eca8e052e2c37fb4;hp=55564bc3d604eebc96968f25fac779152238e7bf;hpb=679b4943c3b0f451e7f4fbcd804dd8a7a679e253;p=lttng-tools.git

diff --git a/src/bin/lttng/commands/disable_channels.c b/src/bin/lttng/commands/disable_channels.c
index 55564bc3d..d861b3770 100644
--- a/src/bin/lttng/commands/disable_channels.c
+++ b/src/bin/lttng/commands/disable_channels.c
@@ -1,19 +1,18 @@
 /*
  * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; only version 2
- * of the License.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2 only,
+ * as published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
 #define _GNU_SOURCE
@@ -66,20 +65,14 @@ static struct poptOption long_options[] = {
  */
 static void usage(FILE *ofp)
 {
-	fprintf(ofp, "usage: lttng disable-channel NAME[,NAME2,...] [options]\n");
+	fprintf(ofp, "usage: lttng disable-channel NAME[,NAME2,...] [-k|-u] [OPTIONS]\n");
 	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, "  -k, --kernel             Apply for the kernel tracer\n");
-#if 0
-	fprintf(ofp, "  -u, --userspace [CMD]    Apply for the user-space tracer\n");
-	fprintf(ofp, "                           If no CMD, the domain used is UST global\n");
-	fprintf(ofp, "                           or else the domain is UST EXEC_NAME\n");
-	fprintf(ofp, "  -p, --pid PID            If -u, apply to specific PID (domain: UST PID)\n");
-#else
-	fprintf(ofp, "  -u, --userspace          Apply for the user-space tracer\n");
-#endif
+	fprintf(ofp, "  -s, --session NAME       Apply to session name\n");
+	fprintf(ofp, "  -k, --kernel             Apply to the kernel tracer\n");
+	fprintf(ofp, "  -u, --userspace          Apply to the user-space tracer\n");
 	fprintf(ofp, "\n");
 }
 
@@ -88,10 +81,12 @@ static void usage(FILE *ofp)
  */
 static int disable_channels(char *session_name)
 {
-	int ret = CMD_SUCCESS;
+	int ret = CMD_SUCCESS, warn = 0;
 	char *channel_name;
 	struct lttng_domain dom;
 
+	memset(&dom, 0, sizeof(dom));
+
 	/* Create lttng domain */
 	if (opt_kernel) {
 		dom.type = LTTNG_DOMAIN_KERNEL;
@@ -99,7 +94,7 @@ static int disable_channels(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;
 	}
 
@@ -116,18 +111,25 @@ static int disable_channels(char *session_name)
 
 		ret = lttng_disable_channel(handle, channel_name);
 		if (ret < 0) {
-			goto error;
+			ERR("Channel %s: %s (session %s)", channel_name,
+					lttng_strerror(ret), session_name);
+			warn = 1;
 		} else {
 			MSG("%s channel %s disabled for session %s",
-					opt_kernel ? "Kernel" : "UST", channel_name,
-					session_name);
+					opt_kernel ? "Kernel" : "UST", channel_name, session_name);
 		}
 
 		/* Next channel */
 		channel_name = strtok(NULL, ",");
 	}
 
+	ret = CMD_SUCCESS;
+
 error:
+	if (warn) {
+		ret = CMD_WARNING;
+	}
+
 	lttng_destroy_handle(handle);
 
 	return ret;
@@ -140,7 +142,7 @@ error:
  */
 int cmd_disable_channels(int argc, const char **argv)
 {
-	int opt, ret;
+	int opt, ret = CMD_SUCCESS;
 	static poptContext pc;
 	char *session_name = NULL;
 
@@ -150,15 +152,13 @@ int cmd_disable_channels(int argc, const char **argv)
 	while ((opt = poptGetNextOpt(pc)) != -1) {
 		switch (opt) {
 		case OPT_HELP:
-			usage(stderr);
-			ret = CMD_SUCCESS;
+			usage(stdout);
 			goto end;
 		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);
@@ -171,14 +171,14 @@ int cmd_disable_channels(int argc, const char **argv)
 	if (opt_channels == NULL) {
 		ERR("Missing channel name(s).\n");
 		usage(stderr);
-		ret = CMD_SUCCESS;
+		ret = CMD_ERROR;
 		goto end;
 	}
 
 	if (!opt_session_name) {
 		session_name = get_session_name();
 		if (session_name == NULL) {
-			ret = -1;
+			ret = CMD_ERROR;
 			goto end;
 		}
 	} else {
@@ -188,5 +188,9 @@ int cmd_disable_channels(int argc, const char **argv)
 	ret = disable_channels(session_name);
 
 end:
+	if (!opt_session_name && session_name) {
+		free(session_name);
+	}
+	poptFreeContext(pc);
 	return ret;
 }