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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; | |
b9dfb167 | 35 | static int opt_jul; |
d78d6610 DG |
36 | #if 0 |
37 | /* Not implemented yet */ | |
38 | static char *opt_cmd_name; | |
e953ef25 | 39 | static pid_t opt_pid; |
d78d6610 | 40 | #endif |
e953ef25 DG |
41 | |
42 | enum { | |
43 | OPT_HELP = 1, | |
44 | OPT_USERSPACE, | |
679b4943 | 45 | OPT_LIST_OPTIONS, |
e953ef25 DG |
46 | }; |
47 | ||
cd80958d DG |
48 | static struct lttng_handle *handle; |
49 | ||
e953ef25 DG |
50 | static struct poptOption long_options[] = { |
51 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
52 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
5440dc42 | 53 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
e953ef25 DG |
54 | {"all-events", 'a', POPT_ARG_VAL, &opt_disable_all, 1, 0, 0}, |
55 | {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0}, | |
b9dfb167 | 56 | {"jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0}, |
e953ef25 | 57 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, |
d78d6610 DG |
58 | #if 0 |
59 | /* Not implemented yet */ | |
6caa2bcc | 60 | {"userspace", 'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0}, |
e953ef25 | 61 | {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0}, |
d78d6610 DG |
62 | #else |
63 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, | |
64 | #endif | |
679b4943 | 65 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
e953ef25 DG |
66 | {0, 0, 0, 0, 0, 0, 0} |
67 | }; | |
68 | ||
69 | /* | |
70 | * usage | |
71 | */ | |
72 | static void usage(FILE *ofp) | |
73 | { | |
c138a39b | 74 | fprintf(ofp, "usage: lttng disable-event NAME[,NAME2,...] (-k | -u) [OPTIONS]\n"); |
e953ef25 | 75 | fprintf(ofp, "\n"); |
32a6298d | 76 | fprintf(ofp, "Options:\n"); |
e953ef25 | 77 | fprintf(ofp, " -h, --help Show this help\n"); |
679b4943 | 78 | fprintf(ofp, " --list-options Simple listing of options\n"); |
32a6298d DG |
79 | fprintf(ofp, " -s, --session NAME Apply to session name\n"); |
80 | fprintf(ofp, " -c, --channel NAME Apply to this channel\n"); | |
9730260e | 81 | fprintf(ofp, " -a, --all-events Disable all tracepoints\n"); |
e953ef25 | 82 | fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n"); |
27221701 | 83 | fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n"); |
b9dfb167 | 84 | fprintf(ofp, " -j, --jul Apply for Java application using JUL\n"); |
e953ef25 DG |
85 | fprintf(ofp, "\n"); |
86 | } | |
87 | ||
85076754 MD |
88 | static |
89 | const char *print_channel_name(const char *name) | |
90 | { | |
91 | return name ? : DEFAULT_CHANNEL_NAME; | |
92 | } | |
93 | ||
94 | static | |
95 | const char *print_raw_channel_name(const char *name) | |
96 | { | |
97 | return name ? : "<default>"; | |
98 | } | |
99 | ||
e953ef25 DG |
100 | /* |
101 | * disable_events | |
102 | * | |
103 | * Disabling event using the lttng API. | |
104 | */ | |
cd80958d | 105 | static int disable_events(char *session_name) |
e953ef25 | 106 | { |
85076754 | 107 | int ret = CMD_SUCCESS, warn = 0; |
b73d0b29 | 108 | char *event_name, *channel_name = NULL; |
7d29a247 | 109 | struct lttng_domain dom; |
e953ef25 | 110 | |
441c16a7 MD |
111 | memset(&dom, 0, sizeof(dom)); |
112 | ||
d78d6610 | 113 | /* Create lttng domain */ |
7d29a247 DG |
114 | if (opt_kernel) { |
115 | dom.type = LTTNG_DOMAIN_KERNEL; | |
d78d6610 | 116 | } else if (opt_userspace) { |
9730260e | 117 | dom.type = LTTNG_DOMAIN_UST; |
b9dfb167 DG |
118 | } else if (opt_jul) { |
119 | dom.type = LTTNG_DOMAIN_JUL; | |
9730260e | 120 | } else { |
b9dfb167 | 121 | print_missing_domain(); |
d16c1a4c | 122 | ret = CMD_ERROR; |
9730260e | 123 | goto error; |
7d29a247 DG |
124 | } |
125 | ||
85076754 | 126 | channel_name = opt_channel_name; |
ae856491 | 127 | |
cd80958d DG |
128 | handle = lttng_create_handle(session_name, &dom); |
129 | if (handle == NULL) { | |
130 | ret = -1; | |
131 | goto error; | |
132 | } | |
133 | ||
e953ef25 | 134 | if (opt_disable_all) { |
9730260e DG |
135 | ret = lttng_disable_event(handle, NULL, channel_name); |
136 | if (ret < 0) { | |
60e835ca | 137 | ERR("%s", lttng_strerror(ret)); |
e953ef25 DG |
138 | goto error; |
139 | } | |
140 | ||
9730260e | 141 | MSG("All %s events are disabled in channel %s", |
b9dfb167 | 142 | get_domain_str(dom.type), print_channel_name(channel_name)); |
9730260e | 143 | goto end; |
e953ef25 DG |
144 | } |
145 | ||
146 | /* Strip event list */ | |
147 | event_name = strtok(opt_event_list, ","); | |
148 | while (event_name != NULL) { | |
ae856491 | 149 | DBG("Disabling event %s", event_name); |
e953ef25 | 150 | |
9730260e DG |
151 | ret = lttng_disable_event(handle, event_name, channel_name); |
152 | if (ret < 0) { | |
ae856491 | 153 | ERR("Event %s: %s (channel %s, session %s)", event_name, |
85076754 MD |
154 | lttng_strerror(ret), |
155 | ret == -LTTNG_ERR_NEED_CHANNEL_NAME | |
156 | ? print_raw_channel_name(channel_name) | |
157 | : print_channel_name(channel_name), | |
158 | session_name); | |
ae856491 | 159 | warn = 1; |
9730260e | 160 | } else { |
ae856491 | 161 | MSG("%s event %s disabled in channel %s for session %s", |
b9dfb167 | 162 | get_domain_str(dom.type), event_name, |
85076754 | 163 | print_channel_name(channel_name), |
ae856491 | 164 | session_name); |
9730260e DG |
165 | } |
166 | ||
e953ef25 DG |
167 | /* Next event */ |
168 | event_name = strtok(NULL, ","); | |
169 | } | |
170 | ||
ae856491 DG |
171 | ret = CMD_SUCCESS; |
172 | ||
9730260e | 173 | end: |
e953ef25 | 174 | error: |
ae856491 DG |
175 | if (warn) { |
176 | ret = CMD_WARNING; | |
177 | } | |
cd80958d DG |
178 | lttng_destroy_handle(handle); |
179 | ||
e953ef25 DG |
180 | return ret; |
181 | } | |
182 | ||
183 | /* | |
184 | * cmd_disable_events | |
185 | * | |
186 | * Disable event to trace session | |
187 | */ | |
188 | int cmd_disable_events(int argc, const char **argv) | |
189 | { | |
ca1c3607 | 190 | int opt, ret = CMD_SUCCESS; |
e953ef25 | 191 | static poptContext pc; |
cd80958d | 192 | char *session_name = NULL; |
e953ef25 DG |
193 | |
194 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
195 | poptReadDefaultConfig(pc, 0); | |
196 | ||
197 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
198 | switch (opt) { | |
199 | case OPT_HELP: | |
ca1c3607 | 200 | usage(stdout); |
e953ef25 DG |
201 | goto end; |
202 | case OPT_USERSPACE: | |
203 | opt_userspace = 1; | |
e953ef25 | 204 | break; |
679b4943 SM |
205 | case OPT_LIST_OPTIONS: |
206 | list_cmd_options(stdout, long_options); | |
679b4943 | 207 | goto end; |
e953ef25 DG |
208 | default: |
209 | usage(stderr); | |
210 | ret = CMD_UNDEFINED; | |
211 | goto end; | |
212 | } | |
213 | } | |
214 | ||
215 | opt_event_list = (char*) poptGetArg(pc); | |
216 | if (opt_event_list == NULL && opt_disable_all == 0) { | |
217 | ERR("Missing event name(s).\n"); | |
218 | usage(stderr); | |
ca1c3607 | 219 | ret = CMD_ERROR; |
e953ef25 DG |
220 | goto end; |
221 | } | |
222 | ||
cd80958d DG |
223 | if (!opt_session_name) { |
224 | session_name = get_session_name(); | |
225 | if (session_name == NULL) { | |
ca1c3607 | 226 | ret = CMD_ERROR; |
cd80958d DG |
227 | goto end; |
228 | } | |
229 | } else { | |
230 | session_name = opt_session_name; | |
231 | } | |
232 | ||
233 | ret = disable_events(session_name); | |
e953ef25 DG |
234 | |
235 | end: | |
5853fd43 DG |
236 | if (!opt_session_name && session_name) { |
237 | free(session_name); | |
238 | } | |
ca1c3607 | 239 | poptFreeContext(pc); |
e953ef25 DG |
240 | return ret; |
241 | } |