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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 | |
29 | static char *opt_event_list; | |
9730260e | 30 | static int opt_kernel; |
e953ef25 | 31 | static char *opt_channel_name; |
5440dc42 | 32 | static char *opt_session_name; |
e953ef25 DG |
33 | static int opt_userspace; |
34 | static int opt_disable_all; | |
d78d6610 DG |
35 | #if 0 |
36 | /* Not implemented yet */ | |
37 | static char *opt_cmd_name; | |
e953ef25 | 38 | static pid_t opt_pid; |
d78d6610 | 39 | #endif |
e953ef25 DG |
40 | |
41 | enum { | |
42 | OPT_HELP = 1, | |
43 | OPT_USERSPACE, | |
679b4943 | 44 | OPT_LIST_OPTIONS, |
e953ef25 DG |
45 | }; |
46 | ||
cd80958d DG |
47 | static struct lttng_handle *handle; |
48 | ||
e953ef25 DG |
49 | static 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 | */ | |
70 | static void usage(FILE *ofp) | |
71 | { | |
c138a39b | 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 | ||
85076754 MD |
85 | static |
86 | const char *print_channel_name(const char *name) | |
87 | { | |
88 | return name ? : DEFAULT_CHANNEL_NAME; | |
89 | } | |
90 | ||
91 | static | |
92 | const char *print_raw_channel_name(const char *name) | |
93 | { | |
94 | return name ? : "<default>"; | |
95 | } | |
96 | ||
e953ef25 DG |
97 | /* |
98 | * disable_events | |
99 | * | |
100 | * Disabling event using the lttng API. | |
101 | */ | |
cd80958d | 102 | static int disable_events(char *session_name) |
e953ef25 | 103 | { |
85076754 | 104 | int ret = CMD_SUCCESS, warn = 0; |
b73d0b29 | 105 | char *event_name, *channel_name = NULL; |
7d29a247 | 106 | struct lttng_domain dom; |
e953ef25 | 107 | |
441c16a7 MD |
108 | memset(&dom, 0, sizeof(dom)); |
109 | ||
d78d6610 | 110 | /* Create lttng domain */ |
7d29a247 DG |
111 | if (opt_kernel) { |
112 | dom.type = LTTNG_DOMAIN_KERNEL; | |
d78d6610 | 113 | } else if (opt_userspace) { |
9730260e | 114 | dom.type = LTTNG_DOMAIN_UST; |
9730260e | 115 | } else { |
e14f64a8 | 116 | ERR("Please specify a tracer (-k/--kernel or -u/--userspace)"); |
d16c1a4c | 117 | ret = CMD_ERROR; |
9730260e | 118 | goto error; |
7d29a247 DG |
119 | } |
120 | ||
85076754 | 121 | channel_name = opt_channel_name; |
ae856491 | 122 | |
cd80958d DG |
123 | handle = lttng_create_handle(session_name, &dom); |
124 | if (handle == NULL) { | |
125 | ret = -1; | |
126 | goto error; | |
127 | } | |
128 | ||
e953ef25 | 129 | if (opt_disable_all) { |
9730260e DG |
130 | ret = lttng_disable_event(handle, NULL, channel_name); |
131 | if (ret < 0) { | |
60e835ca | 132 | ERR("%s", lttng_strerror(ret)); |
e953ef25 DG |
133 | goto error; |
134 | } | |
135 | ||
9730260e | 136 | MSG("All %s events are disabled in channel %s", |
85076754 MD |
137 | opt_kernel ? "kernel" : "UST", |
138 | print_channel_name(channel_name)); | |
9730260e | 139 | goto end; |
e953ef25 DG |
140 | } |
141 | ||
142 | /* Strip event list */ | |
143 | event_name = strtok(opt_event_list, ","); | |
144 | while (event_name != NULL) { | |
ae856491 | 145 | DBG("Disabling event %s", event_name); |
e953ef25 | 146 | |
9730260e DG |
147 | ret = lttng_disable_event(handle, event_name, channel_name); |
148 | if (ret < 0) { | |
ae856491 | 149 | ERR("Event %s: %s (channel %s, session %s)", event_name, |
85076754 MD |
150 | lttng_strerror(ret), |
151 | ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
152 | ? print_raw_channel_name(channel_name) | |
153 | : print_channel_name(channel_name), | |
154 | session_name); | |
ae856491 | 155 | warn = 1; |
9730260e | 156 | } else { |
ae856491 | 157 | MSG("%s event %s disabled in channel %s for session %s", |
85076754 MD |
158 | opt_kernel ? "kernel" : "UST", event_name, |
159 | print_channel_name(channel_name), | |
ae856491 | 160 | session_name); |
9730260e DG |
161 | } |
162 | ||
e953ef25 DG |
163 | /* Next event */ |
164 | event_name = strtok(NULL, ","); | |
165 | } | |
166 | ||
ae856491 DG |
167 | ret = CMD_SUCCESS; |
168 | ||
9730260e | 169 | end: |
e953ef25 | 170 | error: |
ae856491 DG |
171 | if (warn) { |
172 | ret = CMD_WARNING; | |
173 | } | |
cd80958d DG |
174 | lttng_destroy_handle(handle); |
175 | ||
e953ef25 DG |
176 | return ret; |
177 | } | |
178 | ||
179 | /* | |
180 | * cmd_disable_events | |
181 | * | |
182 | * Disable event to trace session | |
183 | */ | |
184 | int cmd_disable_events(int argc, const char **argv) | |
185 | { | |
ca1c3607 | 186 | int opt, ret = CMD_SUCCESS; |
e953ef25 | 187 | static poptContext pc; |
cd80958d | 188 | char *session_name = NULL; |
e953ef25 DG |
189 | |
190 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
191 | poptReadDefaultConfig(pc, 0); | |
192 | ||
193 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
194 | switch (opt) { | |
195 | case OPT_HELP: | |
ca1c3607 | 196 | usage(stdout); |
e953ef25 DG |
197 | goto end; |
198 | case OPT_USERSPACE: | |
199 | opt_userspace = 1; | |
e953ef25 | 200 | break; |
679b4943 SM |
201 | case OPT_LIST_OPTIONS: |
202 | list_cmd_options(stdout, long_options); | |
679b4943 | 203 | goto end; |
e953ef25 DG |
204 | default: |
205 | usage(stderr); | |
206 | ret = CMD_UNDEFINED; | |
207 | goto end; | |
208 | } | |
209 | } | |
210 | ||
211 | opt_event_list = (char*) poptGetArg(pc); | |
212 | if (opt_event_list == NULL && opt_disable_all == 0) { | |
213 | ERR("Missing event name(s).\n"); | |
214 | usage(stderr); | |
ca1c3607 | 215 | ret = CMD_ERROR; |
e953ef25 DG |
216 | goto end; |
217 | } | |
218 | ||
cd80958d DG |
219 | if (!opt_session_name) { |
220 | session_name = get_session_name(); | |
221 | if (session_name == NULL) { | |
ca1c3607 | 222 | ret = CMD_ERROR; |
cd80958d DG |
223 | goto end; |
224 | } | |
225 | } else { | |
226 | session_name = opt_session_name; | |
227 | } | |
228 | ||
229 | ret = disable_events(session_name); | |
e953ef25 DG |
230 | |
231 | end: | |
5853fd43 DG |
232 | if (!opt_session_name && session_name) { |
233 | free(session_name); | |
234 | } | |
ca1c3607 | 235 | poptFreeContext(pc); |
e953ef25 DG |
236 | return ret; |
237 | } |