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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 | { | |
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 | 90 | static 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 | 160 | end: |
e953ef25 | 161 | error: |
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 | */ | |
178 | int 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 | |
225 | end: | |
5853fd43 DG |
226 | if (!opt_session_name && session_name) { |
227 | free(session_name); | |
228 | } | |
ca1c3607 | 229 | poptFreeContext(pc); |
e953ef25 DG |
230 | return ret; |
231 | } |