X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=lttng%2Fcommands%2Fdisable_channels.c;h=9ad5eb6c2f034140da9eec4ca0aea9cd4be63f39;hp=4235fbf86f56b1724acfb5fd99f0c8cbee2985a6;hb=78f0bacd8f9b34beef70d79a4048ba9e1a718db8;hpb=5440dc4282b3186641a8886dc05f6cf5641b5191

diff --git a/lttng/commands/disable_channels.c b/lttng/commands/disable_channels.c
index 4235fbf86..9ad5eb6c2 100644
--- a/lttng/commands/disable_channels.c
+++ b/lttng/commands/disable_channels.c
@@ -3,8 +3,8 @@
  *
  * 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; either version 2
- * of the License, or (at your option) any later version.
+ * as published by the Free Software Foundation; only version 2
+ * of the License.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -25,15 +25,16 @@
 #include <sys/types.h>
 #include <unistd.h>
 
-#include "cmd.h"
-#include "conf.h"
-#include "utils.h"
+#include "../cmd.h"
+#include "../conf.h"
+#include "../utils.h"
 
 static char *opt_channels;
 static char *opt_kernel;
 static char *opt_session_name;
 static int opt_pid_all;
 static int opt_userspace;
+static char *opt_cmd_name;
 static pid_t opt_pid;
 
 enum {
@@ -41,12 +42,14 @@ enum {
 	OPT_USERSPACE,
 };
 
+static struct lttng_handle *handle;
+
 static struct poptOption long_options[] = {
 	/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
 	{"help",           'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
 	{"session",        's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0},
 	{"kernel",         'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
-	{"userspace",      'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0},
+	{"userspace",      'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0},
 	{"all",            0,   POPT_ARG_VAL, &opt_pid_all, 1, 0, 0},
 	{"pid",            'p', POPT_ARG_INT, &opt_pid, 0, 0, 0},
 	{0, 0, 0, 0, 0, 0, 0}
@@ -59,54 +62,58 @@ static void usage(FILE *ofp)
 {
 	fprintf(ofp, "usage: lttng disable-channel NAME[,NAME2,...] [options]\n");
 	fprintf(ofp, "\n");
-	fprintf(ofp, "  -h, --help            Show this help\n");
+	fprintf(ofp, "  -h, --help               Show this help\n");
 	fprintf(ofp, "  -s, --session            Apply on session name\n");
-	fprintf(ofp, "  -k, --kernel          Apply for the kernel tracer\n");
-	fprintf(ofp, "  -u, --userspace       Apply for the user-space tracer\n");
-	fprintf(ofp, "      --all             If -u, apply on all traceable apps\n");
-	fprintf(ofp, "  -p, --pid PID         If -u, apply on a specific PID\n");
+	fprintf(ofp, "  -k, --kernel             Apply for the kernel tracer\n");
+	fprintf(ofp, "  -u, --userspace [CMD]    Apply for the user-space tracer\n");
+	fprintf(ofp, "      --all                If -u, apply on all traceable apps\n");
+	fprintf(ofp, "  -p, --pid PID            If -u, apply on a specific PID\n");
 	fprintf(ofp, "\n");
 }
 
 /*
- *  disable_channels
- *
- *  Disabling channel using the lttng API.
+ * Disabling channel using the lttng API.
  */
-static int disable_channels(void)
+static int disable_channels(char *session_name)
 {
 	int ret = CMD_SUCCESS;
 	char *channel_name;
+	struct lttng_domain dom;
+
+	if (opt_kernel) {
+		dom.type = LTTNG_DOMAIN_KERNEL;
+	} else if (opt_pid != 0) {
+		dom.type = LTTNG_DOMAIN_UST_PID;
+		dom.attr.pid = opt_pid;
+		DBG("PID %d set to lttng handle", opt_pid);
+	} else if (opt_userspace && opt_cmd_name == NULL) {
+		dom.type = LTTNG_DOMAIN_UST;
+	} else if (opt_userspace && opt_cmd_name != NULL) {
+		dom.type = LTTNG_DOMAIN_UST_EXEC_NAME;
+		strncpy(dom.attr.exec_name, opt_cmd_name, NAME_MAX);
+	} else {
+		ERR("Please specify a tracer (--kernel or --userspace)");
+		ret = CMD_NOT_IMPLEMENTED;
+		goto error;
+	}
 
-	if (set_session_name(opt_session_name) < 0) {
-		ret = CMD_ERROR;
+	handle = lttng_create_handle(session_name, &dom);
+	if (handle == NULL) {
+		ret = -1;
 		goto error;
 	}
 
 	/* Strip channel list */
 	channel_name = strtok(opt_channels, ",");
 	while (channel_name != NULL) {
-		/* Kernel tracer action */
-		if (opt_kernel) {
-			DBG("Disabling kernel channel %s", channel_name);
-			ret = lttng_kernel_disable_channel(channel_name);
-			if (ret < 0) {
-				goto error;
-			} else {
-				MSG("Kernel channel disabled %s", channel_name);
-			}
-		} else if (opt_userspace) {		/* User-space tracer action */
-			/*
-			 * TODO: Waiting on lttng UST 2.0
-			 */
-			if (opt_pid_all) {
-			} else if (opt_pid != 0) {
-			}
-			ret = CMD_NOT_IMPLEMENTED;
+		DBG("Disabling channel %s", channel_name);
+
+		ret = lttng_disable_channel(handle, channel_name);
+		if (ret < 0) {
 			goto error;
 		} else {
-			ERR("Please specify a tracer (kernel or user-space)");
-			goto error;
+			MSG("Channel %s disabled for session %s", channel_name,
+					session_name);
 		}
 
 		/* Next channel */
@@ -114,6 +121,8 @@ static int disable_channels(void)
 	}
 
 error:
+	lttng_destroy_handle(handle);
+
 	return ret;
 }
 
@@ -126,6 +135,7 @@ int cmd_disable_channels(int argc, const char **argv)
 {
 	int opt, ret;
 	static poptContext pc;
+	char *session_name = NULL;
 
 	pc = poptGetContext(NULL, argc, argv, long_options, 0);
 	poptReadDefaultConfig(pc, 0);
@@ -154,7 +164,17 @@ int cmd_disable_channels(int argc, const char **argv)
 		goto end;
 	}
 
-	ret = disable_channels();
+	if (!opt_session_name) {
+		session_name = get_session_name();
+		if (session_name == NULL) {
+			ret = -1;
+			goto end;
+		}
+	} else {
+		session_name = opt_session_name;
+	}
+
+	ret = disable_channels(session_name);
 
 end:
 	return ret;