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c39c72ee PMF |
1 | /* Copyright (C) 2009 Pierre-Marc Fournier |
2 | * | |
3 | * This library is free software; you can redistribute it and/or | |
4 | * modify it under the terms of the GNU Lesser General Public | |
5 | * License as published by the Free Software Foundation; either | |
6 | * version 2.1 of the License, or (at your option) any later version. | |
7 | * | |
8 | * This library 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 GNU | |
11 | * Lesser General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU Lesser General Public | |
14 | * License along with this library; if not, write to the Free Software | |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
16 | */ | |
17 | ||
872037bb PMF |
18 | #define _GNU_SOURCE |
19 | #include <stdio.h> | |
fbd8191b PMF |
20 | #include <unistd.h> |
21 | #include <getopt.h> | |
22 | #include <stdlib.h> | |
fbd8191b | 23 | #include <fcntl.h> |
fbd8191b | 24 | |
f9e5ce61 | 25 | #include "ustcomm.h" |
ae937656 | 26 | #include "ustcmd.h" |
2028e7fd | 27 | #include "usterr.h" |
ae937656 PP |
28 | |
29 | enum command { | |
b0a5a08b PMF |
30 | CREATE_TRACE=1000, |
31 | ALLOC_TRACE, | |
ae937656 PP |
32 | START_TRACE, |
33 | STOP_TRACE, | |
b0a5a08b | 34 | DESTROY_TRACE, |
ae937656 PP |
35 | LIST_MARKERS, |
36 | ENABLE_MARKER, | |
37 | DISABLE_MARKER, | |
38 | GET_ONLINE_PIDS, | |
763f41e5 DS |
39 | SET_SUBBUF_SIZE, |
40 | SET_SUBBUF_NUM, | |
e77b8e8e DS |
41 | GET_SUBBUF_SIZE, |
42 | GET_SUBBUF_NUM, | |
b2fb2f91 AH |
43 | GET_SOCK_PATH, |
44 | SET_SOCK_PATH, | |
b9318b35 | 45 | FORCE_SWITCH, |
ae937656 | 46 | UNKNOWN |
ef290fca | 47 | }; |
fbd8191b | 48 | |
52c51a47 | 49 | struct ust_opts { |
ae937656 | 50 | enum command cmd; |
52c51a47 | 51 | pid_t *pids; |
08230db7 | 52 | char *regex; |
52c51a47 PMF |
53 | }; |
54 | ||
fd2fb4f9 PMF |
55 | char *progname = NULL; |
56 | ||
57 | void usage(void) | |
58 | { | |
ae937656 | 59 | fprintf(stderr, "usage: %s COMMAND PIDs...\n", progname); |
fd2fb4f9 PMF |
60 | fprintf(stderr, "\nControl the tracing of a process that supports LTTng Userspace Tracing.\n\ |
61 | \n\ | |
62 | Commands:\n\ | |
62ec620f | 63 | --create-trace\t\t\tCreate trace\n\ |
4ed9f99d | 64 | --alloc-trace\t\t\tAlloc trace\n\ |
fd2fb4f9 PMF |
65 | --start-trace\t\t\tStart tracing\n\ |
66 | --stop-trace\t\t\tStop tracing\n\ | |
67 | --destroy-trace\t\t\tDestroy the trace\n\ | |
763f41e5 DS |
68 | --set-subbuf-size \"CHANNEL/bytes\"\tSet the size of subbuffers per channel\n\ |
69 | --set-subbuf-num \"CHANNEL/n\"\tSet the number of subbuffers per channel\n\ | |
b2fb2f91 | 70 | --set-sock-path\t\t\tSet the path of the daemon socket\n\ |
e77b8e8e DS |
71 | --get-subbuf-size \"CHANNEL\"\t\tGet the size of subbuffers per channel\n\ |
72 | --get-subbuf-num \"CHANNEL\"\t\tGet the number of subbuffers per channel\n\ | |
b2fb2f91 | 73 | --get-sock-path\t\t\tGet the path of the daemon socket\n\ |
ae937656 PP |
74 | --enable-marker \"CHANNEL/MARKER\"\tEnable a marker\n\ |
75 | --disable-marker \"CHANNEL/MARKER\"\tDisable a marker\n\ | |
76 | --list-markers\t\t\tList the markers of the process, their\n\t\t\t\t\t state and format string\n\ | |
b9318b35 | 77 | --force-switch\t\t\tForce a subbuffer switch\n\ |
ae937656 | 78 | \ |
fd2fb4f9 PMF |
79 | "); |
80 | } | |
81 | ||
52c51a47 | 82 | int parse_opts_long(int argc, char **argv, struct ust_opts *opts) |
fbd8191b | 83 | { |
52c51a47 | 84 | int c; |
52c51a47 | 85 | |
52c51a47 | 86 | opts->pids = NULL; |
ef290fca | 87 | opts->regex = NULL; |
52c51a47 PMF |
88 | |
89 | while (1) { | |
52c51a47 PMF |
90 | int option_index = 0; |
91 | static struct option long_options[] = { | |
b0a5a08b PMF |
92 | { "create-trace", 0, 0, CREATE_TRACE }, |
93 | { "alloc-trace", 0, 0, ALLOC_TRACE }, | |
94 | { "start-trace", 0, 0, START_TRACE }, | |
95 | { "stop-trace", 0, 0, STOP_TRACE }, | |
96 | { "destroy-trace", 0, 0, DESTROY_TRACE }, | |
97 | { "list-markers", 0, 0, LIST_MARKERS }, | |
98 | { "enable-marker", 1, 0, ENABLE_MARKER }, | |
99 | { "disable-marker", 1, 0, DISABLE_MARKER }, | |
100 | { "help", 0, 0, 'h' }, | |
101 | { "online-pids", 0, 0, GET_ONLINE_PIDS }, | |
102 | { "set-subbuf-size", 1, 0, SET_SUBBUF_SIZE }, | |
103 | { "set-subbuf-num", 1, 0, SET_SUBBUF_NUM }, | |
e77b8e8e DS |
104 | { "get-subbuf-size", 1, 0, GET_SUBBUF_SIZE }, |
105 | { "get-subbuf-num", 1, 0, GET_SUBBUF_NUM }, | |
b2fb2f91 AH |
106 | { "get-sock-path", 0, 0, GET_SOCK_PATH }, |
107 | { "set-sock-path", 1, 0, SET_SOCK_PATH }, | |
b9318b35 | 108 | { "force-switch", 0, 0, FORCE_SWITCH }, |
b0a5a08b | 109 | { 0, 0, 0, 0 } |
52c51a47 PMF |
110 | }; |
111 | ||
d373b5cd | 112 | c = getopt_long(argc, argv, "h", long_options, &option_index); |
52c51a47 PMF |
113 | if (c == -1) |
114 | break; | |
115 | ||
b0a5a08b PMF |
116 | if(c >= 1000) |
117 | opts->cmd = c; | |
118 | ||
52c51a47 PMF |
119 | switch (c) { |
120 | case 0: | |
121 | printf("option %s", long_options[option_index].name); | |
122 | if (optarg) | |
123 | printf(" with arg %s", optarg); | |
124 | printf("\n"); | |
125 | break; | |
126 | ||
b0a5a08b PMF |
127 | case ENABLE_MARKER: |
128 | case DISABLE_MARKER: | |
129 | case SET_SUBBUF_SIZE: | |
130 | case SET_SUBBUF_NUM: | |
e77b8e8e DS |
131 | case GET_SUBBUF_SIZE: |
132 | case GET_SUBBUF_NUM: | |
b2fb2f91 | 133 | case SET_SOCK_PATH: |
ef290fca | 134 | opts->regex = strdup(optarg); |
ae937656 | 135 | break; |
b0a5a08b | 136 | |
d373b5cd PMF |
137 | case 'h': |
138 | usage(); | |
139 | exit(0); | |
b0a5a08b PMF |
140 | |
141 | case '?': | |
142 | fprintf(stderr, "Invalid argument\n\n"); | |
143 | usage(); | |
144 | exit(1); | |
fbd8191b PMF |
145 | } |
146 | } | |
147 | ||
772030fe | 148 | if (argc - optind > 0 && opts->cmd != GET_ONLINE_PIDS) { |
52c51a47 PMF |
149 | int i; |
150 | int pididx=0; | |
151 | opts->pids = malloc((argc-optind+1) * sizeof(pid_t)); | |
fbd8191b | 152 | |
52c51a47 | 153 | for(i=optind; i<argc; i++) { |
08230db7 PMF |
154 | /* don't take any chances, use a long long */ |
155 | long long tmp; | |
156 | char *endptr; | |
157 | tmp = strtoull(argv[i], &endptr, 10); | |
158 | if(*endptr != '\0') { | |
159 | ERR("The pid \"%s\" is invalid.", argv[i]); | |
160 | return 1; | |
161 | } | |
162 | opts->pids[pididx++] = (pid_t) tmp; | |
52c51a47 PMF |
163 | } |
164 | opts->pids[pididx] = -1; | |
fbd8191b PMF |
165 | } |
166 | ||
52c51a47 PMF |
167 | return 0; |
168 | } | |
fbd8191b | 169 | |
fbd8191b PMF |
170 | int main(int argc, char *argv[]) |
171 | { | |
52c51a47 | 172 | pid_t *pidit; |
52c51a47 | 173 | int result; |
b2fb2f91 | 174 | char *tmp; |
52c51a47 | 175 | struct ust_opts opts; |
fbd8191b | 176 | |
52c51a47 | 177 | progname = argv[0]; |
fbd8191b | 178 | |
52c51a47 PMF |
179 | if(argc <= 1) { |
180 | fprintf(stderr, "No operation specified.\n"); | |
181 | usage(); | |
182 | exit(EXIT_FAILURE); | |
183 | } | |
184 | ||
185 | result = parse_opts_long(argc, argv, &opts); | |
186 | if(result) { | |
08230db7 | 187 | fprintf(stderr, "\n"); |
52c51a47 PMF |
188 | usage(); |
189 | exit(EXIT_FAILURE); | |
190 | } | |
191 | ||
ae937656 | 192 | if(opts.pids == NULL && opts.cmd != GET_ONLINE_PIDS) { |
52c51a47 PMF |
193 | fprintf(stderr, "No pid specified.\n"); |
194 | usage(); | |
195 | exit(EXIT_FAILURE); | |
196 | } | |
ae937656 | 197 | if(opts.cmd == UNKNOWN) { |
52c51a47 PMF |
198 | fprintf(stderr, "No command specified.\n"); |
199 | usage(); | |
200 | exit(EXIT_FAILURE); | |
201 | } | |
ae937656 | 202 | if (opts.cmd == GET_ONLINE_PIDS) { |
08230db7 | 203 | pid_t *pp = ustcmd_get_online_pids(); |
ae937656 | 204 | unsigned int i = 0; |
52c51a47 | 205 | |
ae937656 PP |
206 | if (pp) { |
207 | while (pp[i] != 0) { | |
208 | printf("%u\n", (unsigned int) pp[i]); | |
209 | ++i; | |
210 | } | |
211 | free(pp); | |
52c51a47 | 212 | } |
ef290fca | 213 | |
ae937656 PP |
214 | exit(EXIT_SUCCESS); |
215 | } | |
52c51a47 | 216 | |
ae937656 | 217 | pidit = opts.pids; |
08230db7 | 218 | struct marker_status *cmsf = NULL; |
ef290fca | 219 | |
ae937656 PP |
220 | while(*pidit != -1) { |
221 | switch (opts.cmd) { | |
62ec620f PMF |
222 | case CREATE_TRACE: |
223 | result = ustcmd_create_trace(*pidit); | |
224 | if (result) { | |
225 | ERR("error while trying to create trace with PID %u\n", (unsigned int) *pidit); | |
226 | break; | |
227 | } | |
228 | break; | |
229 | ||
ae937656 | 230 | case START_TRACE: |
08230db7 PMF |
231 | result = ustcmd_start_trace(*pidit); |
232 | if (result) { | |
233 | ERR("error while trying to for trace with PID %u\n", (unsigned int) *pidit); | |
234 | break; | |
235 | } | |
ae937656 | 236 | break; |
ef290fca | 237 | |
ae937656 | 238 | case STOP_TRACE: |
08230db7 PMF |
239 | result = ustcmd_stop_trace(*pidit); |
240 | if (result) { | |
241 | ERR("error while trying to stop trace for PID %u\n", (unsigned int) *pidit); | |
242 | break; | |
243 | } | |
ae937656 | 244 | break; |
ef290fca | 245 | |
b0a5a08b | 246 | case DESTROY_TRACE: |
08230db7 PMF |
247 | result = ustcmd_destroy_trace(*pidit); |
248 | if (result) { | |
249 | ERR("error while trying to destroy trace with PID %u\n", (unsigned int) *pidit); | |
250 | break; | |
251 | } | |
ae937656 | 252 | break; |
ef290fca | 253 | |
ae937656 | 254 | case LIST_MARKERS: |
08230db7 PMF |
255 | cmsf = NULL; |
256 | if (ustcmd_get_cmsf(&cmsf, *pidit)) { | |
257 | fprintf(stderr, | |
258 | "error while trying to list markers for" | |
259 | " PID %u\n", (unsigned int) *pidit); | |
260 | break; | |
261 | } | |
262 | unsigned int i = 0; | |
263 | while (cmsf[i].channel != NULL) { | |
264 | printf("{PID: %u, channel/marker: %s/%s, " | |
264f6231 | 265 | "state: %u, fmt: %s}\n", |
08230db7 PMF |
266 | (unsigned int) *pidit, |
267 | cmsf[i].channel, | |
268 | cmsf[i].marker, | |
269 | cmsf[i].state, | |
270 | cmsf[i].fs); | |
271 | ++i; | |
272 | } | |
273 | ustcmd_free_cmsf(cmsf); | |
ae937656 | 274 | break; |
ef290fca | 275 | |
ae937656 | 276 | case ENABLE_MARKER: |
ee648b8f PMF |
277 | if(opts.regex) |
278 | ustcmd_set_marker_state(opts.regex, 1, *pidit); | |
279 | break; | |
ae937656 | 280 | case DISABLE_MARKER: |
ee648b8f PMF |
281 | if(opts.regex) |
282 | ustcmd_set_marker_state(opts.regex, 0, *pidit); | |
283 | break; | |
ef290fca | 284 | |
763f41e5 DS |
285 | case SET_SUBBUF_SIZE: |
286 | ustcmd_set_subbuf_size(opts.regex, *pidit); | |
287 | break; | |
288 | ||
289 | case SET_SUBBUF_NUM: | |
290 | ustcmd_set_subbuf_num(opts.regex, *pidit); | |
291 | break; | |
292 | ||
e77b8e8e DS |
293 | case GET_SUBBUF_SIZE: |
294 | result = ustcmd_get_subbuf_size(opts.regex, *pidit); | |
295 | if (result == -1) { | |
296 | ERR("error while trying to get_subuf_size with PID %u\n", (unsigned int) *pidit); | |
297 | break; | |
298 | } | |
299 | ||
300 | printf("the size of subbufers is %d\n", result); | |
301 | break; | |
302 | ||
303 | case GET_SUBBUF_NUM: | |
304 | result = ustcmd_get_subbuf_num(opts.regex, *pidit); | |
305 | if (result == -1) { | |
306 | ERR("error while trying to get_subuf_num with PID %u\n", (unsigned int) *pidit); | |
307 | break; | |
308 | } | |
309 | ||
310 | printf("the number of subbufers is %d\n", result); | |
311 | break; | |
312 | ||
763f41e5 DS |
313 | case ALLOC_TRACE: |
314 | result = ustcmd_alloc_trace(*pidit); | |
315 | if (result) { | |
316 | ERR("error while trying to alloc trace with PID %u\n", (unsigned int) *pidit); | |
317 | break; | |
318 | } | |
319 | break; | |
320 | ||
b2fb2f91 AH |
321 | case GET_SOCK_PATH: |
322 | result = ustcmd_get_sock_path(&tmp, *pidit); | |
323 | if (result) { | |
324 | ERR("error while trying to get sock path for PID %u\n", (unsigned int) *pidit); | |
325 | break; | |
326 | } | |
327 | printf("the socket path is %s\n", tmp); | |
328 | free(tmp); | |
329 | break; | |
330 | ||
331 | case SET_SOCK_PATH: | |
332 | result = ustcmd_set_sock_path(opts.regex, *pidit); | |
333 | if (result) { | |
334 | ERR("error while trying to set sock path for PID %u\n", (unsigned int) *pidit); | |
335 | } | |
336 | break; | |
337 | ||
b9318b35 AH |
338 | case FORCE_SWITCH: |
339 | result = ustcmd_force_switch(*pidit); | |
340 | if (result) { | |
341 | ERR("error while trying to force switch for PID %u\n", (unsigned int) *pidit); | |
342 | } | |
343 | break; | |
344 | ||
ae937656 | 345 | default: |
08230db7 | 346 | ERR("unknown command\n"); |
ae937656 PP |
347 | break; |
348 | } | |
ef290fca | 349 | |
52c51a47 PMF |
350 | pidit++; |
351 | } | |
82b1a169 | 352 | |
ef290fca PMF |
353 | if (opts.pids != NULL) { |
354 | free(opts.pids); | |
355 | } | |
356 | if (opts.regex != NULL) { | |
357 | free(opts.regex); | |
ae937656 | 358 | } |
fbd8191b PMF |
359 | |
360 | return 0; | |
361 | } | |
ae937656 | 362 |