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ab33e65c | 1 | /* Copyright (C) 2009 Pierre-Marc Fournier, Philippe Proulx-Barrette |
8b26d56b | 2 | * Copyright (C) 2011 Ericsson AB |
ab33e65c PP |
3 | * |
4 | * This library is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU Lesser General Public | |
6 | * License as published by the Free Software Foundation; either | |
7 | * version 2.1 of the License, or (at your option) any later version. | |
8 | * | |
9 | * This library is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | * Lesser General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU Lesser General Public | |
15 | * License along with this library; if not, write to the Free Software | |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
17 | */ | |
18 | ||
ef290fca | 19 | #define _GNU_SOURCE |
ab33e65c PP |
20 | #include <stdio.h> |
21 | #include <unistd.h> | |
22 | #include <getopt.h> | |
23 | #include <stdlib.h> | |
24 | #include <fcntl.h> | |
25 | #include <string.h> | |
26 | #include <dirent.h> | |
ab33e65c PP |
27 | |
28 | #include "ustcomm.h" | |
2298f329 | 29 | #include "ust/ustctl.h" |
2a79ceeb | 30 | #include "usterr.h" |
ab33e65c | 31 | |
8b26d56b | 32 | static int do_cmd(int sock, |
72098143 NC |
33 | const struct ustcomm_header *req_header, |
34 | const char *req_data, | |
35 | struct ustcomm_header *res_header, | |
36 | char **res_data) | |
37 | { | |
8b26d56b | 38 | int result, saved_errno = 0; |
72098143 NC |
39 | char *recv_buf; |
40 | ||
72098143 NC |
41 | recv_buf = zmalloc(USTCOMM_BUFFER_SIZE); |
42 | if (!recv_buf) { | |
43 | saved_errno = ENOMEM; | |
8b26d56b | 44 | goto out; |
72098143 NC |
45 | } |
46 | ||
8b26d56b | 47 | result = ustcomm_req(sock, req_header, req_data, res_header, recv_buf); |
72098143 NC |
48 | if (result > 0) { |
49 | saved_errno = -res_header->result; | |
50 | if (res_header->size == 0 || saved_errno > 0) { | |
51 | free(recv_buf); | |
52 | } else { | |
53 | if (res_data) { | |
54 | *res_data = recv_buf; | |
55 | } else { | |
56 | free(recv_buf); | |
57 | } | |
58 | } | |
59 | } else { | |
60 | ERR("ustcomm req failed"); | |
61 | if (result == 0) { | |
62 | saved_errno = ENOTCONN; | |
63 | } else { | |
64 | saved_errno = -result; | |
65 | } | |
66 | free(recv_buf); | |
67 | } | |
68 | ||
8b26d56b | 69 | out: |
72098143 | 70 | errno = saved_errno; |
72098143 NC |
71 | if (errno) { |
72 | return -1; | |
73 | } | |
74 | ||
75 | return 0; | |
76 | } | |
77 | ||
8b26d56b NC |
78 | int ustctl_connect_pid(pid_t pid) |
79 | { | |
80 | int sock; | |
81 | ||
82 | if (ustcomm_connect_app(pid, &sock)) { | |
83 | ERR("could not connect to PID %u", (unsigned int) pid); | |
84 | errno = ENOTCONN; | |
85 | return -1; | |
86 | } | |
87 | ||
88 | return sock; | |
89 | } | |
90 | ||
dde0eeef NC |
91 | static void get_pids_in_dir(DIR *dir, pid_t **pid_list, |
92 | unsigned int *pid_list_size) | |
772030fe | 93 | { |
08230db7 | 94 | struct dirent *dirent; |
dde0eeef | 95 | unsigned int read_pid; |
ab33e65c | 96 | |
772030fe | 97 | while ((dirent = readdir(dir))) { |
ab33e65c | 98 | if (!strcmp(dirent->d_name, ".") || |
dde0eeef NC |
99 | !strcmp(dirent->d_name, "..") || |
100 | !strcmp(dirent->d_name, "ust-consumer") || | |
101 | dirent->d_type == DT_DIR) { | |
ab33e65c PP |
102 | |
103 | continue; | |
104 | } | |
105 | ||
dde0eeef NC |
106 | sscanf(dirent->d_name, "%u", &read_pid); |
107 | ||
108 | (*pid_list)[*pid_list_size - 1] = read_pid; | |
109 | /* FIXME: Here we previously called pid_is_online, which | |
110 | * always returned 1, now I replaced it with just 1. | |
111 | * We need to figure out an intelligent way of solving | |
112 | * this, maybe connect-disconnect. | |
113 | */ | |
114 | if (1) { | |
115 | (*pid_list_size)++; | |
116 | *pid_list = realloc(*pid_list, | |
117 | *pid_list_size * sizeof(pid_t)); | |
ab33e65c PP |
118 | } |
119 | } | |
120 | ||
dde0eeef NC |
121 | (*pid_list)[*pid_list_size - 1] = 0; /* Array end */ |
122 | } | |
ab33e65c | 123 | |
dde0eeef NC |
124 | pid_t *ustctl_get_online_pids(void) |
125 | { | |
126 | char *dir_name; | |
127 | DIR *dir; | |
128 | unsigned int pid_list_size = 1; | |
129 | pid_t *pid_list = NULL; | |
130 | ||
131 | dir_name = ustcomm_user_sock_dir(); | |
132 | if (!dir_name) { | |
ab33e65c PP |
133 | return NULL; |
134 | } | |
135 | ||
dde0eeef NC |
136 | dir = opendir(dir_name); |
137 | if (!dir) { | |
138 | goto free_dir_name; | |
139 | } | |
140 | ||
141 | pid_list = malloc(pid_list_size * sizeof(pid_t)); | |
142 | ||
143 | get_pids_in_dir(dir, &pid_list, &pid_list_size); | |
144 | ||
145 | if (pid_list[0] == 0) { | |
146 | /* No PID at all */ | |
147 | free(pid_list); | |
148 | pid_list = NULL; | |
149 | goto close_dir; | |
150 | } | |
151 | ||
152 | close_dir: | |
ab33e65c | 153 | closedir(dir); |
dde0eeef NC |
154 | |
155 | free_dir_name: | |
156 | free(dir_name); | |
157 | ||
158 | return pid_list; | |
ab33e65c PP |
159 | } |
160 | ||
161 | /** | |
2298f329 | 162 | * Sets marker state (USTCTL_MS_ON or USTCTL_MS_OFF). |
ab33e65c PP |
163 | * |
164 | * @param mn Marker name | |
165 | * @param state Marker's new state | |
166 | * @param pid Traced process ID | |
2298f329 | 167 | * @return 0 if successful, or errors {USTCTL_ERR_GEN, USTCTL_ERR_ARG} |
ab33e65c | 168 | */ |
8b26d56b NC |
169 | int ustctl_set_marker_state(int sock, const char *trace, const char *channel, |
170 | const char *marker, int state) | |
ef290fca | 171 | { |
72098143 NC |
172 | struct ustcomm_header req_header, res_header; |
173 | struct ustcomm_marker_info marker_inf; | |
ef290fca PMF |
174 | int result; |
175 | ||
72098143 NC |
176 | result = ustcomm_pack_marker_info(&req_header, |
177 | &marker_inf, | |
d89b8191 | 178 | trace, |
72098143 NC |
179 | channel, |
180 | marker); | |
181 | if (result < 0) { | |
182 | errno = -result; | |
183 | return -1; | |
08b8805e | 184 | } |
ab33e65c | 185 | |
72098143 | 186 | req_header.command = state ? ENABLE_MARKER : DISABLE_MARKER; |
ab33e65c | 187 | |
8b26d56b | 188 | return do_cmd(sock, &req_header, (char *)&marker_inf, |
72098143 | 189 | &res_header, NULL); |
ab33e65c PP |
190 | } |
191 | ||
763f41e5 DS |
192 | /** |
193 | * Set subbuffer size. | |
194 | * | |
195 | * @param channel_size Channel name and size | |
196 | * @param pid Traced process ID | |
197 | * @return 0 if successful, or error | |
198 | */ | |
8b26d56b NC |
199 | int ustctl_set_subbuf_size(int sock, const char *trace, const char *channel, |
200 | unsigned int subbuf_size) | |
763f41e5 | 201 | { |
72098143 NC |
202 | struct ustcomm_header req_header, res_header; |
203 | struct ustcomm_channel_info ch_inf; | |
763f41e5 DS |
204 | int result; |
205 | ||
72098143 NC |
206 | result = ustcomm_pack_channel_info(&req_header, |
207 | &ch_inf, | |
d89b8191 | 208 | trace, |
72098143 NC |
209 | channel); |
210 | if (result < 0) { | |
211 | errno = -result; | |
08b8805e DG |
212 | return -1; |
213 | } | |
763f41e5 | 214 | |
72098143 NC |
215 | req_header.command = SET_SUBBUF_SIZE; |
216 | ch_inf.subbuf_size = subbuf_size; | |
763f41e5 | 217 | |
8b26d56b | 218 | return do_cmd(sock, &req_header, (char *)&ch_inf, |
72098143 | 219 | &res_header, NULL); |
763f41e5 DS |
220 | } |
221 | ||
222 | /** | |
223 | * Set subbuffer num. | |
224 | * | |
225 | * @param channel_num Channel name and num | |
226 | * @param pid Traced process ID | |
227 | * @return 0 if successful, or error | |
228 | */ | |
8b26d56b NC |
229 | int ustctl_set_subbuf_num(int sock, const char *trace, const char *channel, |
230 | unsigned int num) | |
763f41e5 | 231 | { |
72098143 NC |
232 | struct ustcomm_header req_header, res_header; |
233 | struct ustcomm_channel_info ch_inf; | |
763f41e5 DS |
234 | int result; |
235 | ||
72098143 NC |
236 | result = ustcomm_pack_channel_info(&req_header, |
237 | &ch_inf, | |
d89b8191 | 238 | trace, |
72098143 NC |
239 | channel); |
240 | if (result < 0) { | |
241 | errno = -result; | |
08b8805e DG |
242 | return -1; |
243 | } | |
763f41e5 | 244 | |
72098143 NC |
245 | req_header.command = SET_SUBBUF_NUM; |
246 | ch_inf.subbuf_num = num; | |
247 | ||
8b26d56b | 248 | return do_cmd(sock, &req_header, (char *)&ch_inf, |
72098143 | 249 | &res_header, NULL); |
763f41e5 | 250 | |
763f41e5 DS |
251 | } |
252 | ||
8b26d56b NC |
253 | |
254 | static int ustctl_get_subbuf_num_size(int sock, const char *trace, const char *channel, | |
255 | int *num, int *size) | |
e77b8e8e | 256 | { |
72098143 NC |
257 | struct ustcomm_header req_header, res_header; |
258 | struct ustcomm_channel_info ch_inf, *ch_inf_res; | |
e77b8e8e DS |
259 | int result; |
260 | ||
72098143 NC |
261 | |
262 | result = ustcomm_pack_channel_info(&req_header, | |
263 | &ch_inf, | |
d89b8191 | 264 | trace, |
72098143 NC |
265 | channel); |
266 | if (result < 0) { | |
267 | errno = -result; | |
08b8805e DG |
268 | return -1; |
269 | } | |
e77b8e8e | 270 | |
72098143 NC |
271 | req_header.command = GET_SUBBUF_NUM_SIZE; |
272 | ||
8b26d56b | 273 | result = do_cmd(sock, &req_header, (char *)&ch_inf, |
72098143 NC |
274 | &res_header, (char **)&ch_inf_res); |
275 | if (result < 0) { | |
e77b8e8e DS |
276 | return -1; |
277 | } | |
278 | ||
72098143 NC |
279 | *num = ch_inf_res->subbuf_num; |
280 | *size = ch_inf_res->subbuf_size; | |
281 | ||
282 | free(ch_inf_res); | |
283 | ||
284 | return 0; | |
e77b8e8e DS |
285 | } |
286 | ||
287 | /** | |
288 | * Get subbuffer num. | |
289 | * | |
290 | * @param channel Channel name | |
291 | * @param pid Traced process ID | |
292 | * @return subbuf cnf if successful, or error | |
293 | */ | |
8b26d56b | 294 | int ustctl_get_subbuf_num(int sock, const char *trace, const char *channel) |
e77b8e8e | 295 | { |
72098143 | 296 | int num, size, result; |
e77b8e8e | 297 | |
8b26d56b | 298 | result = ustctl_get_subbuf_num_size(sock, trace, channel, |
72098143 NC |
299 | &num, &size); |
300 | if (result < 0) { | |
301 | errno = -result; | |
08b8805e DG |
302 | return -1; |
303 | } | |
e77b8e8e | 304 | |
72098143 NC |
305 | return num; |
306 | } | |
307 | ||
308 | /** | |
309 | * Get subbuffer size. | |
310 | * | |
311 | * @param channel Channel name | |
312 | * @param pid Traced process ID | |
313 | * @return subbuf size if successful, or error | |
314 | */ | |
8b26d56b | 315 | int ustctl_get_subbuf_size(int sock, const char *trace, const char *channel) |
72098143 NC |
316 | { |
317 | int num, size, result; | |
318 | ||
8b26d56b | 319 | result = ustctl_get_subbuf_num_size(sock, trace, channel, |
72098143 NC |
320 | &num, &size); |
321 | if (result < 0) { | |
322 | errno = -result; | |
e77b8e8e DS |
323 | return -1; |
324 | } | |
325 | ||
72098143 | 326 | return size; |
e77b8e8e | 327 | } |
763f41e5 | 328 | |
8b26d56b | 329 | static int do_trace_cmd(int sock, const char *trace, int command) |
d89b8191 NC |
330 | { |
331 | struct ustcomm_header req_header, res_header; | |
28c1bb40 | 332 | struct ustcomm_single_field trace_inf; |
d89b8191 NC |
333 | int result; |
334 | ||
28c1bb40 NC |
335 | result = ustcomm_pack_single_field(&req_header, |
336 | &trace_inf, | |
337 | trace); | |
d89b8191 NC |
338 | if (result < 0) { |
339 | errno = -result; | |
340 | return -1; | |
341 | } | |
342 | ||
343 | req_header.command = command; | |
344 | ||
8b26d56b | 345 | return do_cmd(sock, &req_header, (char *)&trace_inf, &res_header, NULL); |
d89b8191 NC |
346 | } |
347 | ||
ab33e65c PP |
348 | /** |
349 | * Destroys an UST trace according to a PID. | |
350 | * | |
351 | * @param pid Traced process ID | |
2298f329 | 352 | * @return 0 if successful, or error USTCTL_ERR_GEN |
ab33e65c | 353 | */ |
8b26d56b | 354 | int ustctl_destroy_trace(int sock, const char *trace) |
772030fe | 355 | { |
8b26d56b | 356 | return do_trace_cmd(sock, trace, DESTROY_TRACE); |
ab33e65c PP |
357 | } |
358 | ||
359 | /** | |
360 | * Starts an UST trace (and setups it) according to a PID. | |
361 | * | |
362 | * @param pid Traced process ID | |
2298f329 | 363 | * @return 0 if successful, or error USTCTL_ERR_GEN |
ab33e65c | 364 | */ |
8b26d56b | 365 | int ustctl_setup_and_start(int sock, const char *trace) |
772030fe | 366 | { |
8b26d56b | 367 | return do_trace_cmd(sock, trace, START); |
ab33e65c PP |
368 | } |
369 | ||
62ec620f PMF |
370 | /** |
371 | * Creates an UST trace according to a PID. | |
372 | * | |
373 | * @param pid Traced process ID | |
2298f329 | 374 | * @return 0 if successful, or error USTCTL_ERR_GEN |
62ec620f | 375 | */ |
8b26d56b | 376 | int ustctl_create_trace(int sock, const char *trace) |
62ec620f | 377 | { |
8b26d56b | 378 | return do_trace_cmd(sock, trace, CREATE_TRACE); |
62ec620f PMF |
379 | } |
380 | ||
ab33e65c PP |
381 | /** |
382 | * Starts an UST trace according to a PID. | |
383 | * | |
384 | * @param pid Traced process ID | |
2298f329 | 385 | * @return 0 if successful, or error USTCTL_ERR_GEN |
ab33e65c | 386 | */ |
8b26d56b | 387 | int ustctl_start_trace(int sock, const char *trace) |
772030fe | 388 | { |
8b26d56b | 389 | return do_trace_cmd(sock, trace, START_TRACE); |
ab33e65c PP |
390 | } |
391 | ||
763f41e5 DS |
392 | /** |
393 | * Alloc an UST trace according to a PID. | |
394 | * | |
395 | * @param pid Traced process ID | |
2298f329 | 396 | * @return 0 if successful, or error USTCTL_ERR_GEN |
763f41e5 | 397 | */ |
8b26d56b | 398 | int ustctl_alloc_trace(int sock, const char *trace) |
763f41e5 | 399 | { |
8b26d56b | 400 | return do_trace_cmd(sock, trace, ALLOC_TRACE); |
763f41e5 DS |
401 | } |
402 | ||
e005efaa NC |
403 | |
404 | int ustctl_force_switch(int sock, const char *trace) | |
405 | { | |
406 | return do_trace_cmd(sock, trace, FORCE_SUBBUF_SWITCH); | |
407 | } | |
408 | ||
ab33e65c PP |
409 | /** |
410 | * Stops an UST trace according to a PID. | |
411 | * | |
412 | * @param pid Traced process ID | |
2298f329 | 413 | * @return 0 if successful, or error USTCTL_ERR_GEN |
ab33e65c | 414 | */ |
8b26d56b | 415 | int ustctl_stop_trace(int sock, const char *trace) |
772030fe | 416 | { |
8b26d56b | 417 | return do_trace_cmd(sock, trace, STOP_TRACE); |
ab33e65c PP |
418 | } |
419 | ||
420 | /** | |
421 | * Counts newlines ('\n') in a string. | |
422 | * | |
423 | * @param str String to search in | |
424 | * @return Total newlines count | |
425 | */ | |
2298f329 | 426 | unsigned int ustctl_count_nl(const char *str) |
772030fe | 427 | { |
ab33e65c PP |
428 | unsigned int i = 0, tot = 0; |
429 | ||
430 | while (str[i] != '\0') { | |
431 | if (str[i] == '\n') { | |
432 | ++tot; | |
433 | } | |
434 | ++i; | |
435 | } | |
436 | ||
437 | return tot; | |
438 | } | |
439 | ||
440 | /** | |
441 | * Frees a CMSF array. | |
442 | * | |
443 | * @param cmsf CMSF array to free | |
2298f329 | 444 | * @return 0 if successful, or error USTCTL_ERR_ARG |
ab33e65c | 445 | */ |
2298f329 | 446 | int ustctl_free_cmsf(struct marker_status *cmsf) |
772030fe | 447 | { |
ab33e65c | 448 | if (cmsf == NULL) { |
2298f329 | 449 | return USTCTL_ERR_ARG; |
ab33e65c PP |
450 | } |
451 | ||
452 | unsigned int i = 0; | |
453 | while (cmsf[i].channel != NULL) { | |
454 | free(cmsf[i].channel); | |
455 | free(cmsf[i].marker); | |
456 | free(cmsf[i].fs); | |
457 | ++i; | |
458 | } | |
459 | free(cmsf); | |
460 | ||
461 | return 0; | |
462 | } | |
463 | ||
464 | /** | |
465 | * Gets channel/marker/state/format string for a given PID. | |
466 | * | |
467 | * @param cmsf Pointer to CMSF array to be filled (callee allocates, caller | |
2298f329 | 468 | * frees with `ustctl_free_cmsf') |
ab33e65c | 469 | * @param pid Targeted PID |
2a79ceeb | 470 | * @return 0 if successful, or -1 on error |
ab33e65c | 471 | */ |
8b26d56b | 472 | int ustctl_get_cmsf(int sock, struct marker_status **cmsf) |
772030fe | 473 | { |
72098143 | 474 | struct ustcomm_header req_header, res_header; |
08230db7 | 475 | char *big_str = NULL; |
8b26d56b | 476 | int result; |
08230db7 | 477 | struct marker_status *tmp_cmsf = NULL; |
ef290fca PMF |
478 | unsigned int i = 0, cmsf_ind = 0; |
479 | ||
ab33e65c | 480 | if (cmsf == NULL) { |
2a79ceeb | 481 | return -1; |
ab33e65c | 482 | } |
72098143 | 483 | |
72098143 NC |
484 | req_header.command = LIST_MARKERS; |
485 | req_header.size = 0; | |
486 | ||
8b26d56b | 487 | result = ustcomm_send(sock, &req_header, NULL); |
72098143 | 488 | if (result <= 0) { |
8b26d56b | 489 | PERROR("error while requesting markers list"); |
2a79ceeb | 490 | return -1; |
ab33e65c PP |
491 | } |
492 | ||
8b26d56b | 493 | result = ustcomm_recv_alloc(sock, &res_header, &big_str); |
72098143 NC |
494 | if (result <= 0) { |
495 | ERR("error while receiving markers list"); | |
496 | return -1; | |
497 | } | |
498 | ||
72098143 | 499 | tmp_cmsf = (struct marker_status *) zmalloc(sizeof(struct marker_status) * |
2298f329 | 500 | (ustctl_count_nl(big_str) + 1)); |
ab33e65c | 501 | if (tmp_cmsf == NULL) { |
dc46f6e6 | 502 | ERR("Failed to allocate CMSF array"); |
2a79ceeb | 503 | return -1; |
ab33e65c PP |
504 | } |
505 | ||
77957c95 | 506 | /* Parse received reply string (format: "[chan]/[mark] [st] [fs]"): */ |
ab33e65c | 507 | while (big_str[i] != '\0') { |
ab33e65c | 508 | char state; |
ef290fca | 509 | |
264f6231 | 510 | sscanf(big_str + i, "marker: %a[^/]/%a[^ ] %c %a[^\n]", |
72098143 NC |
511 | &tmp_cmsf[cmsf_ind].channel, |
512 | &tmp_cmsf[cmsf_ind].marker, | |
513 | &state, | |
514 | &tmp_cmsf[cmsf_ind].fs); | |
2298f329 NC |
515 | tmp_cmsf[cmsf_ind].state = (state == USTCTL_MS_CHR_ON ? |
516 | USTCTL_MS_ON : USTCTL_MS_OFF); /* Marker state */ | |
ab33e65c PP |
517 | |
518 | while (big_str[i] != '\n') { | |
77957c95 | 519 | ++i; /* Go to next '\n' */ |
ab33e65c | 520 | } |
77957c95 | 521 | ++i; /* Skip current pointed '\n' */ |
ab33e65c PP |
522 | ++cmsf_ind; |
523 | } | |
524 | tmp_cmsf[cmsf_ind].channel = NULL; | |
525 | tmp_cmsf[cmsf_ind].marker = NULL; | |
526 | tmp_cmsf[cmsf_ind].fs = NULL; | |
527 | ||
528 | *cmsf = tmp_cmsf; | |
529 | ||
530 | free(big_str); | |
531 | return 0; | |
532 | } | |
533 | ||
a3adfb05 NC |
534 | /** |
535 | * Frees a TES array. | |
536 | * | |
537 | * @param tes TES array to free | |
2298f329 | 538 | * @return 0 if successful, or error USTCTL_ERR_ARG |
a3adfb05 | 539 | */ |
2298f329 | 540 | int ustctl_free_tes(struct trace_event_status *tes) |
a3adfb05 NC |
541 | { |
542 | if (tes == NULL) { | |
2298f329 | 543 | return USTCTL_ERR_ARG; |
a3adfb05 NC |
544 | } |
545 | ||
546 | unsigned int i = 0; | |
547 | while (tes[i].name != NULL) { | |
548 | free(tes[i].name); | |
549 | ++i; | |
550 | } | |
551 | free(tes); | |
552 | ||
553 | return 0; | |
554 | } | |
555 | ||
556 | /** | |
557 | * Gets trace_events string for a given PID. | |
558 | * | |
559 | * @param tes Pointer to TES array to be filled (callee allocates, caller | |
2298f329 | 560 | * frees with `ustctl_free_tes') |
a3adfb05 NC |
561 | * @param pid Targeted PID |
562 | * @return 0 if successful, or -1 on error | |
563 | */ | |
8b26d56b | 564 | int ustctl_get_tes(int sock, struct trace_event_status **tes) |
a3adfb05 | 565 | { |
72098143 | 566 | struct ustcomm_header req_header, res_header; |
a3adfb05 | 567 | char *big_str = NULL; |
8b26d56b | 568 | int result; |
a3adfb05 NC |
569 | struct trace_event_status *tmp_tes = NULL; |
570 | unsigned int i = 0, tes_ind = 0; | |
571 | ||
572 | if (tes == NULL) { | |
573 | return -1; | |
574 | } | |
575 | ||
72098143 NC |
576 | req_header.command = LIST_TRACE_EVENTS; |
577 | req_header.size = 0; | |
578 | ||
8b26d56b | 579 | result = ustcomm_send(sock, &req_header, NULL); |
72098143 NC |
580 | if (result != 1) { |
581 | ERR("error while requesting trace_event list"); | |
582 | return -1; | |
583 | } | |
584 | ||
8b26d56b | 585 | result = ustcomm_recv_alloc(sock, &res_header, &big_str); |
a3adfb05 | 586 | if (result != 1) { |
72098143 | 587 | ERR("error while receiving markers list"); |
a3adfb05 NC |
588 | return -1; |
589 | } | |
590 | ||
591 | tmp_tes = (struct trace_event_status *) | |
592 | zmalloc(sizeof(struct trace_event_status) * | |
2298f329 | 593 | (ustctl_count_nl(big_str) + 1)); |
a3adfb05 NC |
594 | if (tmp_tes == NULL) { |
595 | ERR("Failed to allocate TES array"); | |
596 | return -1; | |
597 | } | |
598 | ||
599 | /* Parse received reply string (format: "[name]"): */ | |
600 | while (big_str[i] != '\0') { | |
a3adfb05 | 601 | sscanf(big_str + i, "trace_event: %a[^\n]", |
72098143 | 602 | &tmp_tes[tes_ind].name); |
a3adfb05 NC |
603 | while (big_str[i] != '\n') { |
604 | ++i; /* Go to next '\n' */ | |
605 | } | |
606 | ++i; /* Skip current pointed '\n' */ | |
607 | ++tes_ind; | |
608 | } | |
609 | tmp_tes[tes_ind].name = NULL; | |
610 | ||
611 | *tes = tmp_tes; | |
612 | ||
613 | free(big_str); | |
614 | return 0; | |
615 | } | |
616 | ||
b2fb2f91 | 617 | /** |
8b26d56b | 618 | * Set sock path |
b2fb2f91 | 619 | * |
8b26d56b | 620 | * @param sock_path Sock path |
b2fb2f91 AH |
621 | * @param pid Traced process ID |
622 | * @return 0 if successful, or error | |
623 | */ | |
8b26d56b | 624 | int ustctl_set_sock_path(int sock, const char *sock_path) |
b2fb2f91 | 625 | { |
28c1bb40 | 626 | int result; |
72098143 | 627 | struct ustcomm_header req_header, res_header; |
28c1bb40 | 628 | struct ustcomm_single_field sock_path_msg; |
72098143 | 629 | |
28c1bb40 NC |
630 | result = ustcomm_pack_single_field(&req_header, |
631 | &sock_path_msg, | |
632 | sock_path); | |
633 | if (result < 0) { | |
634 | errno = -result; | |
08b8805e DG |
635 | return -1; |
636 | } | |
b2fb2f91 | 637 | |
72098143 | 638 | req_header.command = SET_SOCK_PATH; |
b2fb2f91 | 639 | |
8b26d56b | 640 | return do_cmd(sock, &req_header, (char *)&sock_path_msg, |
72098143 | 641 | &res_header, NULL); |
b2fb2f91 AH |
642 | } |
643 | ||
644 | /** | |
8b26d56b | 645 | * Get sock path |
b2fb2f91 | 646 | * |
8b26d56b | 647 | * @param sock_path Pointer to where the sock path will be returned |
b2fb2f91 AH |
648 | * @param pid Traced process ID |
649 | * @return 0 if successful, or error | |
650 | */ | |
8b26d56b | 651 | int ustctl_get_sock_path(int sock, char **sock_path) |
b2fb2f91 | 652 | { |
b2fb2f91 | 653 | int result; |
72098143 | 654 | struct ustcomm_header req_header, res_header; |
28c1bb40 | 655 | struct ustcomm_single_field *sock_path_msg; |
72098143 NC |
656 | |
657 | req_header.command = GET_SOCK_PATH; | |
658 | req_header.size = 0; | |
b2fb2f91 | 659 | |
8b26d56b | 660 | result = do_cmd(sock, &req_header, NULL, &res_header, |
72098143 NC |
661 | (char **)&sock_path_msg); |
662 | if (result < 0) { | |
663 | return -1; | |
08b8805e | 664 | } |
b2fb2f91 | 665 | |
28c1bb40 | 666 | result = ustcomm_unpack_single_field(sock_path_msg); |
72098143 NC |
667 | if (result < 0) { |
668 | return result; | |
b2fb2f91 AH |
669 | } |
670 | ||
28c1bb40 | 671 | *sock_path = strdup(sock_path_msg->field); |
b2fb2f91 | 672 | |
72098143 | 673 | free(sock_path_msg); |
b9318b35 AH |
674 | |
675 | return 0; | |
676 | } |