+++ /dev/null
-/*
- * 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 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.
- */
-
-#define _GNU_SOURCE
-#include <popt.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include "../cmd.h"
-#include "../conf.h"
-#include "../utils.h"
-
-static char *opt_event_list;
-static int opt_kernel;
-static char *opt_channel_name;
-static char *opt_session_name;
-static int opt_userspace;
-static char *opt_cmd_name;
-static int opt_disable_all;
-static pid_t opt_pid;
-
-enum {
- OPT_HELP = 1,
- 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},
- {"all-events", 'a', POPT_ARG_VAL, &opt_disable_all, 1, 0, 0},
- {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0},
- {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
- {"userspace", 'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0},
- {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0},
- {0, 0, 0, 0, 0, 0, 0}
-};
-
-/*
- * usage
- */
-static void usage(FILE *ofp)
-{
- fprintf(ofp, "usage: lttng disable-event NAME[,NAME2,...] [options]\n");
- fprintf(ofp, "\n");
- fprintf(ofp, " -h, --help Show this help\n");
- fprintf(ofp, " -s, --session Apply on session name\n");
- fprintf(ofp, " -c, --channel Apply on this channel\n");
- fprintf(ofp, " -a, --all-events Disable all tracepoints\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, " 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");
- fprintf(ofp, "\n");
-}
-
-/*
- * disable_events
- *
- * Disabling event using the lttng API.
- */
-static int disable_events(char *session_name)
-{
- int err, ret = CMD_SUCCESS;
- char *event_name, *channel_name = NULL;
- struct lttng_domain dom;
-
- if (opt_channel_name == NULL) {
- err = asprintf(&channel_name, DEFAULT_CHANNEL_NAME);
- if (err < 0) {
- ret = CMD_FATAL;
- goto error;
- }
- } else {
- channel_name = opt_channel_name;
- }
-
- if (opt_kernel && opt_userspace) {
- ERR("Can't use -k/--kernel and -u/--userspace together");
- ret = CMD_FATAL;
- goto error;
- }
-
- 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;
- DBG("UST global domain selected");
- } 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);
- dom.attr.exec_name[NAME_MAX - 1] = '\0';
- } else {
- ERR("Please specify a tracer (-k/--kernel or -u/--userspace)");
- ret = CMD_NOT_IMPLEMENTED;
- goto error;
- }
-
- handle = lttng_create_handle(session_name, &dom);
- if (handle == NULL) {
- ret = -1;
- goto error;
- }
-
- if (opt_disable_all) {
- ret = lttng_disable_event(handle, NULL, channel_name);
- if (ret < 0) {
- goto error;
- }
-
- MSG("All %s events are disabled in channel %s",
- opt_kernel ? "kernel" : "UST", channel_name);
- goto end;
- }
-
- /* Strip event list */
- event_name = strtok(opt_event_list, ",");
- while (event_name != NULL) {
- /* Kernel tracer action */
- if (opt_kernel) {
- DBG("Disabling kernel event %s in channel %s",
- event_name, channel_name);
- } else if (opt_userspace) { /* User-space tracer action */
- if (opt_cmd_name != NULL || opt_pid) {
- MSG("Only supporting tracing all UST processes (-u) for now.");
- ret = CMD_NOT_IMPLEMENTED;
- goto error;
- }
- DBG("Disabling UST event %s in channel %s",
- event_name, channel_name);
- } else {
- ERR("Please specify a tracer (-k/--kernel or -u/--userspace)");
- goto error;
- }
-
- ret = lttng_disable_event(handle, event_name, channel_name);
- if (ret < 0) {
- MSG("Unable to disable %s event %s in channel %s",
- opt_kernel ? "kernel" : "UST", event_name,
- channel_name);
- } else {
- MSG("%s event %s disabled in channel %s",
- opt_kernel ? "kernel" : "UST", event_name,
- channel_name);
- }
-
- /* Next event */
- event_name = strtok(NULL, ",");
- }
-
-end:
-error:
- if (opt_channel_name == NULL) {
- free(channel_name);
- }
- lttng_destroy_handle(handle);
-
- return ret;
-}
-
-/*
- * cmd_disable_events
- *
- * Disable event to trace session
- */
-int cmd_disable_events(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);
-
- while ((opt = poptGetNextOpt(pc)) != -1) {
- switch (opt) {
- case OPT_HELP:
- usage(stderr);
- ret = CMD_SUCCESS;
- goto end;
- case OPT_USERSPACE:
- opt_userspace = 1;
- break;
- default:
- usage(stderr);
- ret = CMD_UNDEFINED;
- goto end;
- }
- }
-
- opt_event_list = (char*) poptGetArg(pc);
- if (opt_event_list == NULL && opt_disable_all == 0) {
- ERR("Missing event name(s).\n");
- usage(stderr);
- ret = CMD_SUCCESS;
- goto end;
- }
-
- 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_events(session_name);
-
-end:
- return ret;
-}
projects / lttng-tools.git / blobdiff