Update version to v2.2.0-rc2
[lttng-tools.git] / src / bin / lttng / commands / disable_events.c
CommitLineData
e953ef25
DG
1/*
2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
3 *
d14d33bf
AM
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License, version 2 only,
6 * as published by the Free Software Foundation.
e953ef25
DG
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
d14d33bf
AM
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
e953ef25
DG
16 */
17
18#define _GNU_SOURCE
19#include <popt.h>
20#include <stdio.h>
21#include <stdlib.h>
22#include <string.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25#include <unistd.h>
26
c399183f 27#include "../command.h"
e953ef25
DG
28
29static char *opt_event_list;
9730260e 30static int opt_kernel;
e953ef25 31static char *opt_channel_name;
5440dc42 32static char *opt_session_name;
e953ef25
DG
33static int opt_userspace;
34static int opt_disable_all;
d78d6610
DG
35#if 0
36/* Not implemented yet */
37static char *opt_cmd_name;
e953ef25 38static pid_t opt_pid;
d78d6610 39#endif
e953ef25
DG
40
41enum {
42 OPT_HELP = 1,
43 OPT_USERSPACE,
679b4943 44 OPT_LIST_OPTIONS,
e953ef25
DG
45};
46
cd80958d
DG
47static struct lttng_handle *handle;
48
e953ef25
DG
49static struct poptOption long_options[] = {
50 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
51 {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
5440dc42 52 {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0},
e953ef25
DG
53 {"all-events", 'a', POPT_ARG_VAL, &opt_disable_all, 1, 0, 0},
54 {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0},
55 {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
d78d6610
DG
56#if 0
57 /* Not implemented yet */
6caa2bcc 58 {"userspace", 'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0},
e953ef25 59 {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0},
d78d6610
DG
60#else
61 {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0},
62#endif
679b4943 63 {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
e953ef25
DG
64 {0, 0, 0, 0, 0, 0, 0}
65};
66
67/*
68 * usage
69 */
70static void usage(FILE *ofp)
71{
32a6298d 72 fprintf(ofp, "usage: lttng disable-event NAME[,NAME2,...] [-k|-u] [OPTIONS]\n");
e953ef25 73 fprintf(ofp, "\n");
32a6298d 74 fprintf(ofp, "Options:\n");
e953ef25 75 fprintf(ofp, " -h, --help Show this help\n");
679b4943 76 fprintf(ofp, " --list-options Simple listing of options\n");
32a6298d
DG
77 fprintf(ofp, " -s, --session NAME Apply to session name\n");
78 fprintf(ofp, " -c, --channel NAME Apply to this channel\n");
9730260e 79 fprintf(ofp, " -a, --all-events Disable all tracepoints\n");
e953ef25 80 fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n");
27221701 81 fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n");
e953ef25
DG
82 fprintf(ofp, "\n");
83}
84
85/*
86 * disable_events
87 *
88 * Disabling event using the lttng API.
89 */
cd80958d 90static int disable_events(char *session_name)
e953ef25 91{
ae856491 92 int err, ret = CMD_SUCCESS, warn = 0;
b73d0b29 93 char *event_name, *channel_name = NULL;
7d29a247 94 struct lttng_domain dom;
e953ef25 95
441c16a7
MD
96 memset(&dom, 0, sizeof(dom));
97
d78d6610 98 /* Create lttng domain */
7d29a247
DG
99 if (opt_kernel) {
100 dom.type = LTTNG_DOMAIN_KERNEL;
d78d6610 101 } else if (opt_userspace) {
9730260e 102 dom.type = LTTNG_DOMAIN_UST;
9730260e 103 } else {
e14f64a8 104 ERR("Please specify a tracer (-k/--kernel or -u/--userspace)");
d16c1a4c 105 ret = CMD_ERROR;
9730260e 106 goto error;
7d29a247
DG
107 }
108
ae856491
DG
109 /* Get channel name */
110 if (opt_channel_name == NULL) {
111 err = asprintf(&channel_name, DEFAULT_CHANNEL_NAME);
112 if (err < 0) {
113 ret = CMD_FATAL;
114 goto error;
115 }
116 } else {
117 channel_name = opt_channel_name;
118 }
119
cd80958d
DG
120 handle = lttng_create_handle(session_name, &dom);
121 if (handle == NULL) {
122 ret = -1;
123 goto error;
124 }
125
e953ef25 126 if (opt_disable_all) {
9730260e
DG
127 ret = lttng_disable_event(handle, NULL, channel_name);
128 if (ret < 0) {
60e835ca 129 ERR("%s", lttng_strerror(ret));
e953ef25
DG
130 goto error;
131 }
132
9730260e
DG
133 MSG("All %s events are disabled in channel %s",
134 opt_kernel ? "kernel" : "UST", channel_name);
135 goto end;
e953ef25
DG
136 }
137
138 /* Strip event list */
139 event_name = strtok(opt_event_list, ",");
140 while (event_name != NULL) {
ae856491 141 DBG("Disabling event %s", event_name);
e953ef25 142
9730260e
DG
143 ret = lttng_disable_event(handle, event_name, channel_name);
144 if (ret < 0) {
ae856491
DG
145 ERR("Event %s: %s (channel %s, session %s)", event_name,
146 lttng_strerror(ret), channel_name, session_name);
147 warn = 1;
9730260e 148 } else {
ae856491
DG
149 MSG("%s event %s disabled in channel %s for session %s",
150 opt_kernel ? "kernel" : "UST", event_name, channel_name,
151 session_name);
9730260e
DG
152 }
153
e953ef25
DG
154 /* Next event */
155 event_name = strtok(NULL, ",");
156 }
157
ae856491
DG
158 ret = CMD_SUCCESS;
159
9730260e 160end:
e953ef25 161error:
ae856491
DG
162 if (warn) {
163 ret = CMD_WARNING;
164 }
b73d0b29
MD
165 if (opt_channel_name == NULL) {
166 free(channel_name);
167 }
cd80958d
DG
168 lttng_destroy_handle(handle);
169
e953ef25
DG
170 return ret;
171}
172
173/*
174 * cmd_disable_events
175 *
176 * Disable event to trace session
177 */
178int cmd_disable_events(int argc, const char **argv)
179{
ca1c3607 180 int opt, ret = CMD_SUCCESS;
e953ef25 181 static poptContext pc;
cd80958d 182 char *session_name = NULL;
e953ef25
DG
183
184 pc = poptGetContext(NULL, argc, argv, long_options, 0);
185 poptReadDefaultConfig(pc, 0);
186
187 while ((opt = poptGetNextOpt(pc)) != -1) {
188 switch (opt) {
189 case OPT_HELP:
ca1c3607 190 usage(stdout);
e953ef25
DG
191 goto end;
192 case OPT_USERSPACE:
193 opt_userspace = 1;
e953ef25 194 break;
679b4943
SM
195 case OPT_LIST_OPTIONS:
196 list_cmd_options(stdout, long_options);
679b4943 197 goto end;
e953ef25
DG
198 default:
199 usage(stderr);
200 ret = CMD_UNDEFINED;
201 goto end;
202 }
203 }
204
205 opt_event_list = (char*) poptGetArg(pc);
206 if (opt_event_list == NULL && opt_disable_all == 0) {
207 ERR("Missing event name(s).\n");
208 usage(stderr);
ca1c3607 209 ret = CMD_ERROR;
e953ef25
DG
210 goto end;
211 }
212
cd80958d
DG
213 if (!opt_session_name) {
214 session_name = get_session_name();
215 if (session_name == NULL) {
ca1c3607 216 ret = CMD_ERROR;
cd80958d
DG
217 goto end;
218 }
219 } else {
220 session_name = opt_session_name;
221 }
222
223 ret = disable_events(session_name);
e953ef25
DG
224
225end:
5853fd43
DG
226 if (!opt_session_name && session_name) {
227 free(session_name);
228 }
ca1c3607 229 poptFreeContext(pc);
e953ef25
DG
230 return ret;
231}
This page took 0.043542 seconds and 4 git commands to generate.