Commit | Line | Data |
---|---|---|
d159ac37 AH |
1 | /* Copyright (C) 2009 Pierre-Marc Fournier |
2 | * 2010 Alexis Halle | |
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 | ||
19 | #define _GNU_SOURCE | |
20 | ||
21 | #include <sys/shm.h> | |
22 | #include <unistd.h> | |
23 | #include <pthread.h> | |
24 | #include <signal.h> | |
25 | ||
26 | #include <stdlib.h> | |
27 | #include <stdio.h> | |
28 | #include <string.h> | |
29 | #include <errno.h> | |
30 | #include <assert.h> | |
31 | ||
32 | #include "libustd.h" | |
33 | #include "usterr.h" | |
34 | #include "ustcomm.h" | |
35 | ||
36 | /* return value: 0 = subbuffer is finished, it won't produce data anymore | |
37 | * 1 = got subbuffer successfully | |
38 | * <0 = error | |
39 | */ | |
40 | ||
41 | #define GET_SUBBUF_OK 1 | |
42 | #define GET_SUBBUF_DONE 0 | |
43 | #define GET_SUBBUF_DIED 2 | |
44 | ||
45 | #define PUT_SUBBUF_OK 1 | |
46 | #define PUT_SUBBUF_DIED 0 | |
47 | #define PUT_SUBBUF_PUSHED 2 | |
48 | #define PUT_SUBBUF_DONE 3 | |
49 | ||
50 | #define UNIX_PATH_MAX 108 | |
51 | ||
52 | int get_subbuffer(struct buffer_info *buf) | |
53 | { | |
54 | char *send_msg=NULL; | |
55 | char *received_msg=NULL; | |
56 | char *rep_code=NULL; | |
57 | int retval; | |
58 | int result; | |
59 | ||
60 | asprintf(&send_msg, "get_subbuffer %s", buf->name); | |
f3f8cc91 | 61 | result = ustcomm_send_request(buf->conn, send_msg, &received_msg); |
d159ac37 AH |
62 | if((result == -1 && (errno == ECONNRESET || errno == EPIPE)) || result == 0) { |
63 | DBG("app died while being traced"); | |
64 | retval = GET_SUBBUF_DIED; | |
65 | goto end; | |
66 | } | |
67 | else if(result < 0) { | |
68 | ERR("get_subbuffer: ustcomm_send_request failed"); | |
69 | retval = -1; | |
70 | goto end; | |
71 | } | |
72 | ||
73 | result = sscanf(received_msg, "%as %ld", &rep_code, &buf->consumed_old); | |
74 | if(result != 2 && result != 1) { | |
75 | ERR("unable to parse response to get_subbuffer"); | |
76 | retval = -1; | |
77 | free(received_msg); | |
78 | goto end_rep; | |
79 | } | |
80 | ||
81 | if(!strcmp(rep_code, "OK")) { | |
82 | DBG("got subbuffer %s", buf->name); | |
83 | retval = GET_SUBBUF_OK; | |
84 | } | |
85 | else if(nth_token_is(received_msg, "END", 0) == 1) { | |
86 | retval = GET_SUBBUF_DONE; | |
87 | goto end_rep; | |
88 | } | |
89 | else if(!strcmp(received_msg, "NOTFOUND")) { | |
90 | DBG("For buffer %s, the trace was not found. This likely means it was destroyed by the user.", buf->name); | |
91 | retval = GET_SUBBUF_DIED; | |
92 | goto end_rep; | |
93 | } | |
94 | else { | |
95 | DBG("error getting subbuffer %s", buf->name); | |
96 | retval = -1; | |
97 | } | |
98 | ||
99 | /* FIXME: free correctly the stuff */ | |
100 | end_rep: | |
101 | if(rep_code) | |
102 | free(rep_code); | |
103 | end: | |
104 | if(send_msg) | |
105 | free(send_msg); | |
106 | if(received_msg) | |
107 | free(received_msg); | |
108 | ||
109 | return retval; | |
110 | } | |
111 | ||
112 | int put_subbuffer(struct buffer_info *buf) | |
113 | { | |
114 | char *send_msg=NULL; | |
115 | char *received_msg=NULL; | |
116 | char *rep_code=NULL; | |
117 | int retval; | |
118 | int result; | |
119 | ||
120 | asprintf(&send_msg, "put_subbuffer %s %ld", buf->name, buf->consumed_old); | |
f3f8cc91 | 121 | result = ustcomm_send_request(buf->conn, send_msg, &received_msg); |
d159ac37 AH |
122 | if(result < 0 && (errno == ECONNRESET || errno == EPIPE)) { |
123 | retval = PUT_SUBBUF_DIED; | |
124 | goto end; | |
125 | } | |
126 | else if(result < 0) { | |
127 | ERR("put_subbuffer: send_message failed"); | |
128 | retval = -1; | |
129 | goto end; | |
130 | } | |
131 | else if(result == 0) { | |
132 | /* Program seems finished. However this might not be | |
133 | * the last subbuffer that has to be collected. | |
134 | */ | |
135 | retval = PUT_SUBBUF_DIED; | |
136 | goto end; | |
137 | } | |
138 | ||
139 | result = sscanf(received_msg, "%as", &rep_code); | |
140 | if(result != 1) { | |
141 | ERR("unable to parse response to put_subbuffer"); | |
142 | retval = -1; | |
143 | goto end_rep; | |
144 | } | |
145 | ||
146 | if(!strcmp(rep_code, "OK")) { | |
147 | DBG("subbuffer put %s", buf->name); | |
148 | retval = PUT_SUBBUF_OK; | |
149 | } | |
150 | else if(!strcmp(received_msg, "NOTFOUND")) { | |
151 | DBG("For buffer %s, the trace was not found. This likely means it was destroyed by the user.", buf->name); | |
152 | /* However, maybe this was not the last subbuffer. So | |
153 | * we return the program died. | |
154 | */ | |
155 | retval = PUT_SUBBUF_DIED; | |
156 | goto end_rep; | |
157 | } | |
158 | else { | |
159 | DBG("put_subbuffer: received error, we were pushed"); | |
160 | retval = PUT_SUBBUF_PUSHED; | |
161 | goto end_rep; | |
162 | } | |
163 | ||
164 | end_rep: | |
165 | if(rep_code) | |
166 | free(rep_code); | |
167 | ||
168 | end: | |
169 | if(send_msg) | |
170 | free(send_msg); | |
171 | if(received_msg) | |
172 | free(received_msg); | |
173 | ||
174 | return retval; | |
175 | } | |
176 | ||
177 | void decrement_active_buffers(void *arg) | |
178 | { | |
179 | struct libustd_instance *instance = arg; | |
180 | pthread_mutex_lock(&instance->mutex); | |
181 | instance->active_buffers--; | |
182 | pthread_mutex_unlock(&instance->mutex); | |
183 | } | |
184 | ||
185 | struct buffer_info *connect_buffer(struct libustd_instance *instance, pid_t pid, const char *bufname) | |
186 | { | |
187 | struct buffer_info *buf; | |
188 | char *send_msg; | |
189 | char *received_msg; | |
190 | int result; | |
d159ac37 AH |
191 | struct shmid_ds shmds; |
192 | ||
193 | buf = (struct buffer_info *) malloc(sizeof(struct buffer_info)); | |
194 | if(buf == NULL) { | |
195 | ERR("add_buffer: insufficient memory"); | |
196 | return NULL; | |
197 | } | |
198 | ||
f3f8cc91 AH |
199 | buf->conn = malloc(sizeof(struct ustcomm_connection)); |
200 | if(buf->conn == NULL) { | |
201 | ERR("add_buffer: insufficient memory"); | |
202 | free(buf); | |
203 | return NULL; | |
204 | } | |
205 | ||
d159ac37 AH |
206 | buf->name = bufname; |
207 | buf->pid = pid; | |
208 | ||
209 | /* connect to app */ | |
f3f8cc91 | 210 | result = ustcomm_connect_app(buf->pid, buf->conn); |
d159ac37 AH |
211 | if(result) { |
212 | WARN("unable to connect to process, it probably died before we were able to connect"); | |
213 | return NULL; | |
214 | } | |
215 | ||
216 | /* get pidunique */ | |
217 | asprintf(&send_msg, "get_pidunique"); | |
f3f8cc91 | 218 | result = ustcomm_send_request(buf->conn, send_msg, &received_msg); |
d159ac37 AH |
219 | free(send_msg); |
220 | if(result == -1) { | |
221 | ERR("problem in ustcomm_send_request(get_pidunique)"); | |
222 | return NULL; | |
223 | } | |
224 | if(result == 0) { | |
225 | goto error; | |
226 | } | |
227 | ||
228 | result = sscanf(received_msg, "%lld", &buf->pidunique); | |
229 | if(result != 1) { | |
230 | ERR("unable to parse response to get_pidunique"); | |
231 | return NULL; | |
232 | } | |
233 | free(received_msg); | |
234 | DBG("got pidunique %lld", buf->pidunique); | |
235 | ||
236 | /* get shmid */ | |
237 | asprintf(&send_msg, "get_shmid %s", buf->name); | |
f3f8cc91 | 238 | result = ustcomm_send_request(buf->conn, send_msg, &received_msg); |
d159ac37 AH |
239 | free(send_msg); |
240 | if(result == -1) { | |
241 | ERR("problem in ustcomm_send_request(get_shmid)"); | |
242 | return NULL; | |
243 | } | |
244 | if(result == 0) { | |
245 | goto error; | |
246 | } | |
247 | ||
248 | result = sscanf(received_msg, "%d %d", &buf->shmid, &buf->bufstruct_shmid); | |
249 | if(result != 2) { | |
250 | ERR("unable to parse response to get_shmid (\"%s\")", received_msg); | |
251 | return NULL; | |
252 | } | |
253 | free(received_msg); | |
254 | DBG("got shmids %d %d", buf->shmid, buf->bufstruct_shmid); | |
255 | ||
256 | /* get n_subbufs */ | |
257 | asprintf(&send_msg, "get_n_subbufs %s", buf->name); | |
f3f8cc91 | 258 | result = ustcomm_send_request(buf->conn, send_msg, &received_msg); |
d159ac37 AH |
259 | free(send_msg); |
260 | if(result == -1) { | |
261 | ERR("problem in ustcomm_send_request(g_n_subbufs)"); | |
262 | return NULL; | |
263 | } | |
264 | if(result == 0) { | |
265 | goto error; | |
266 | } | |
267 | ||
268 | result = sscanf(received_msg, "%d", &buf->n_subbufs); | |
269 | if(result != 1) { | |
270 | ERR("unable to parse response to get_n_subbufs"); | |
271 | return NULL; | |
272 | } | |
273 | free(received_msg); | |
274 | DBG("got n_subbufs %d", buf->n_subbufs); | |
275 | ||
276 | /* get subbuf size */ | |
277 | asprintf(&send_msg, "get_subbuf_size %s", buf->name); | |
f3f8cc91 | 278 | result = ustcomm_send_request(buf->conn, send_msg, &received_msg); |
d159ac37 AH |
279 | free(send_msg); |
280 | if(result == -1) { | |
281 | ERR("problem in ustcomm_send_request(get_subbuf_size)"); | |
282 | return NULL; | |
283 | } | |
284 | if(result == 0) { | |
285 | goto error; | |
286 | } | |
287 | ||
288 | result = sscanf(received_msg, "%d", &buf->subbuf_size); | |
289 | if(result != 1) { | |
290 | ERR("unable to parse response to get_subbuf_size"); | |
291 | return NULL; | |
292 | } | |
293 | free(received_msg); | |
294 | DBG("got subbuf_size %d", buf->subbuf_size); | |
295 | ||
296 | /* attach memory */ | |
297 | buf->mem = shmat(buf->shmid, NULL, 0); | |
298 | if(buf->mem == (void *) 0) { | |
299 | PERROR("shmat"); | |
300 | return NULL; | |
301 | } | |
302 | DBG("successfully attached buffer memory"); | |
303 | ||
304 | buf->bufstruct_mem = shmat(buf->bufstruct_shmid, NULL, 0); | |
305 | if(buf->bufstruct_mem == (void *) 0) { | |
306 | PERROR("shmat"); | |
307 | return NULL; | |
308 | } | |
309 | DBG("successfully attached buffer bufstruct memory"); | |
310 | ||
311 | /* obtain info on the memory segment */ | |
312 | result = shmctl(buf->shmid, IPC_STAT, &shmds); | |
313 | if(result == -1) { | |
314 | PERROR("shmctl"); | |
315 | return NULL; | |
316 | } | |
317 | buf->memlen = shmds.shm_segsz; | |
318 | ||
319 | if(instance->callbacks->on_open_buffer) | |
320 | instance->callbacks->on_open_buffer(instance->callbacks, buf); | |
321 | ||
322 | pthread_mutex_lock(&instance->mutex); | |
323 | instance->active_buffers++; | |
324 | pthread_mutex_unlock(&instance->mutex); | |
325 | ||
326 | return buf; | |
327 | ||
328 | error: | |
329 | free(buf); | |
330 | return NULL; | |
331 | } | |
332 | ||
333 | static void destroy_buffer(struct libustd_callbacks *callbacks, | |
334 | struct buffer_info *buf) | |
335 | { | |
336 | int result; | |
337 | ||
f3f8cc91 | 338 | result = ustcomm_close_app(buf->conn); |
d159ac37 AH |
339 | if(result == -1) { |
340 | WARN("problem calling ustcomm_close_app"); | |
341 | } | |
342 | ||
343 | result = shmdt(buf->mem); | |
344 | if(result == -1) { | |
345 | PERROR("shmdt"); | |
346 | } | |
347 | ||
348 | result = shmdt(buf->bufstruct_mem); | |
349 | if(result == -1) { | |
350 | PERROR("shmdt"); | |
351 | } | |
352 | ||
353 | if(callbacks->on_close_buffer) | |
354 | callbacks->on_close_buffer(callbacks, buf); | |
355 | ||
f3f8cc91 | 356 | free(buf->conn); |
d159ac37 AH |
357 | free(buf); |
358 | } | |
359 | ||
360 | int consumer_loop(struct libustd_instance *instance, struct buffer_info *buf) | |
361 | { | |
362 | int result; | |
363 | ||
364 | pthread_cleanup_push(decrement_active_buffers, instance); | |
365 | ||
366 | for(;;) { | |
367 | /* get the subbuffer */ | |
368 | result = get_subbuffer(buf); | |
369 | if(result == -1) { | |
370 | ERR("error getting subbuffer"); | |
371 | continue; | |
372 | } | |
373 | else if(result == GET_SUBBUF_DONE) { | |
374 | /* this is done */ | |
375 | break; | |
376 | } | |
377 | else if(result == GET_SUBBUF_DIED) { | |
378 | finish_consuming_dead_subbuffer(instance->callbacks, buf); | |
379 | break; | |
380 | } | |
381 | ||
382 | if(instance->callbacks->on_read_subbuffer) | |
383 | instance->callbacks->on_read_subbuffer(instance->callbacks, buf); | |
384 | ||
385 | /* put the subbuffer */ | |
386 | result = put_subbuffer(buf); | |
387 | if(result == -1) { | |
388 | ERR("unknown error putting subbuffer (channel=%s)", buf->name); | |
389 | break; | |
390 | } | |
391 | else if(result == PUT_SUBBUF_PUSHED) { | |
392 | ERR("Buffer overflow (channel=%s), reader pushed. This channel will not be usable passed this point.", buf->name); | |
393 | break; | |
394 | } | |
395 | else if(result == PUT_SUBBUF_DIED) { | |
396 | DBG("application died while putting subbuffer"); | |
397 | /* Skip the first subbuffer. We are not sure it is trustable | |
398 | * because the put_subbuffer() did not complete. | |
399 | */ | |
400 | if(instance->callbacks->on_put_error) | |
401 | instance->callbacks->on_put_error(instance->callbacks, buf); | |
402 | ||
403 | finish_consuming_dead_subbuffer(instance->callbacks, buf); | |
404 | break; | |
405 | } | |
406 | else if(result == PUT_SUBBUF_DONE) { | |
407 | /* Done with this subbuffer */ | |
408 | /* FIXME: add a case where this branch is used? Upon | |
409 | * normal trace termination, at put_subbuf time, a | |
410 | * special last-subbuffer code could be returned by | |
411 | * the listener. | |
412 | */ | |
413 | break; | |
414 | } | |
415 | else if(result == PUT_SUBBUF_OK) { | |
416 | } | |
417 | } | |
418 | ||
419 | DBG("thread for buffer %s is stopping", buf->name); | |
420 | ||
421 | /* FIXME: destroy, unalloc... */ | |
422 | ||
423 | pthread_cleanup_pop(1); | |
424 | ||
425 | return 0; | |
426 | } | |
427 | ||
428 | struct consumer_thread_args { | |
429 | pid_t pid; | |
430 | const char *bufname; | |
431 | struct libustd_instance *instance; | |
432 | }; | |
433 | ||
434 | void *consumer_thread(void *arg) | |
435 | { | |
436 | struct buffer_info *buf; | |
437 | struct consumer_thread_args *args = (struct consumer_thread_args *) arg; | |
438 | int result; | |
439 | sigset_t sigset; | |
440 | ||
441 | DBG("GOT ARGS: pid %d bufname %s", args->pid, args->bufname); | |
442 | ||
443 | if(args->instance->callbacks->on_new_thread) | |
444 | args->instance->callbacks->on_new_thread(args->instance->callbacks); | |
445 | ||
446 | /* Block signals that should be handled by the main thread. */ | |
447 | result = sigemptyset(&sigset); | |
448 | if(result == -1) { | |
449 | PERROR("sigemptyset"); | |
450 | goto end; | |
451 | } | |
452 | result = sigaddset(&sigset, SIGTERM); | |
453 | if(result == -1) { | |
454 | PERROR("sigaddset"); | |
455 | goto end; | |
456 | } | |
457 | result = sigaddset(&sigset, SIGINT); | |
458 | if(result == -1) { | |
459 | PERROR("sigaddset"); | |
460 | goto end; | |
461 | } | |
462 | result = sigprocmask(SIG_BLOCK, &sigset, NULL); | |
463 | if(result == -1) { | |
464 | PERROR("sigprocmask"); | |
465 | goto end; | |
466 | } | |
467 | ||
468 | buf = connect_buffer(args->instance, args->pid, args->bufname); | |
469 | if(buf == NULL) { | |
470 | ERR("failed to connect to buffer"); | |
471 | goto end; | |
472 | } | |
473 | ||
474 | consumer_loop(args->instance, buf); | |
475 | ||
476 | destroy_buffer(args->instance->callbacks, buf); | |
477 | ||
478 | end: | |
479 | ||
480 | if(args->instance->callbacks->on_close_thread) | |
481 | args->instance->callbacks->on_close_thread(args->instance->callbacks); | |
482 | ||
483 | free((void *)args->bufname); | |
484 | free(args); | |
485 | return NULL; | |
486 | } | |
487 | ||
488 | int start_consuming_buffer( | |
489 | struct libustd_instance *instance, pid_t pid, const char *bufname) | |
490 | { | |
491 | pthread_t thr; | |
492 | struct consumer_thread_args *args; | |
493 | int result; | |
494 | ||
495 | DBG("beginning of start_consuming_buffer: args: pid %d bufname %s", pid, bufname); | |
496 | ||
497 | args = (struct consumer_thread_args *) malloc(sizeof(struct consumer_thread_args)); | |
498 | ||
499 | args->pid = pid; | |
500 | args->bufname = strdup(bufname); | |
501 | args->instance = instance; | |
502 | DBG("beginning2 of start_consuming_buffer: args: pid %d bufname %s", args->pid, args->bufname); | |
503 | ||
504 | result = pthread_create(&thr, NULL, consumer_thread, args); | |
505 | if(result == -1) { | |
506 | ERR("pthread_create failed"); | |
507 | return -1; | |
508 | } | |
509 | result = pthread_detach(thr); | |
510 | if(result == -1) { | |
511 | ERR("pthread_detach failed"); | |
512 | return -1; | |
513 | } | |
514 | DBG("end of start_consuming_buffer: args: pid %d bufname %s", args->pid, args->bufname); | |
515 | ||
516 | return 0; | |
517 | } | |
518 | ||
519 | int libustd_start_instance(struct libustd_instance *instance) | |
520 | { | |
521 | int result; | |
522 | int timeout = -1; | |
523 | ||
524 | if(!instance->is_init) { | |
525 | ERR("libustd instance not initialized"); | |
526 | return 1; | |
527 | } | |
528 | ||
529 | /* app loop */ | |
530 | for(;;) { | |
531 | char *recvbuf; | |
532 | ||
533 | /* check for requests on our public socket */ | |
f3f8cc91 | 534 | result = ustcomm_ustd_recv_message(instance->comm, &recvbuf, NULL, timeout); |
d159ac37 AH |
535 | if(result == -1 && errno == EINTR) { |
536 | /* Caught signal */ | |
537 | } | |
538 | else if(result == -1) { | |
539 | ERR("error in ustcomm_ustd_recv_message"); | |
540 | goto loop_end; | |
541 | } | |
542 | else if(result > 0) { | |
543 | if(!strncmp(recvbuf, "collect", 7)) { | |
544 | pid_t pid; | |
545 | char *bufname; | |
546 | int result; | |
547 | ||
548 | result = sscanf(recvbuf, "%*s %d %50as", &pid, &bufname); | |
549 | if(result != 2) { | |
550 | ERR("parsing error: %s", recvbuf); | |
551 | goto free_bufname; | |
552 | } | |
553 | ||
554 | result = start_consuming_buffer(instance, pid, bufname); | |
555 | if(result < 0) { | |
556 | ERR("error in add_buffer"); | |
557 | goto free_bufname; | |
558 | } | |
559 | ||
560 | free_bufname: | |
561 | free(bufname); | |
562 | } | |
563 | else if(!strncmp(recvbuf, "exit", 4)) { | |
564 | /* Only there to force poll to return */ | |
565 | } | |
566 | else { | |
567 | WARN("unknown command: %s", recvbuf); | |
568 | } | |
569 | ||
570 | free(recvbuf); | |
571 | } | |
572 | ||
573 | loop_end: | |
574 | ||
575 | if(instance->quit_program) { | |
576 | pthread_mutex_lock(&instance->mutex); | |
577 | if(instance->active_buffers == 0) { | |
578 | pthread_mutex_unlock(&instance->mutex); | |
579 | break; | |
580 | } | |
581 | pthread_mutex_unlock(&instance->mutex); | |
582 | timeout = 100; | |
583 | } | |
584 | } | |
585 | ||
586 | if(instance->callbacks->on_trace_end) | |
587 | instance->callbacks->on_trace_end(instance); | |
588 | ||
589 | libustd_delete_instance(instance); | |
590 | ||
591 | return 0; | |
592 | } | |
593 | ||
594 | void libustd_delete_instance(struct libustd_instance *instance) | |
595 | { | |
596 | if(instance->is_init) | |
f3f8cc91 | 597 | ustcomm_fini_ustd(instance->comm); |
d159ac37 AH |
598 | |
599 | pthread_mutex_destroy(&instance->mutex); | |
600 | free(instance->sock_path); | |
f3f8cc91 | 601 | free(instance->comm); |
d159ac37 AH |
602 | free(instance); |
603 | } | |
604 | ||
605 | int libustd_stop_instance(struct libustd_instance *instance, int send_msg) | |
606 | { | |
607 | int result; | |
608 | int fd; | |
609 | int bytes = 0; | |
610 | ||
611 | char msg[] = "exit"; | |
612 | ||
613 | instance->quit_program = 1; | |
614 | ||
615 | if(!send_msg) | |
616 | return 0; | |
617 | ||
618 | /* Send a message through the socket to force poll to return */ | |
619 | ||
620 | struct sockaddr_un addr; | |
621 | ||
622 | result = fd = socket(PF_UNIX, SOCK_STREAM, 0); | |
623 | if(result == -1) { | |
624 | PERROR("socket"); | |
625 | return 1; | |
626 | } | |
627 | ||
628 | addr.sun_family = AF_UNIX; | |
629 | ||
630 | strncpy(addr.sun_path, instance->sock_path, UNIX_PATH_MAX); | |
631 | addr.sun_path[UNIX_PATH_MAX-1] = '\0'; | |
632 | ||
633 | result = connect(fd, (struct sockaddr *)&addr, sizeof(addr)); | |
634 | if(result == -1) { | |
635 | PERROR("connect"); | |
636 | } | |
637 | ||
638 | while(bytes != sizeof(msg)) | |
639 | bytes += send(fd, msg, sizeof(msg), 0); | |
640 | ||
641 | close(fd); | |
642 | ||
643 | return 0; | |
644 | } | |
645 | ||
646 | struct libustd_instance *libustd_new_instance( | |
647 | struct libustd_callbacks *callbacks, char *sock_path) | |
648 | { | |
649 | struct libustd_instance *instance = | |
650 | malloc(sizeof(struct libustd_instance)); | |
651 | if(!instance) | |
652 | return NULL; | |
653 | ||
f3f8cc91 AH |
654 | instance->comm = malloc(sizeof(struct ustcomm_ustd)); |
655 | if(!instance->comm) { | |
656 | free(instance); | |
657 | return NULL; | |
658 | } | |
659 | ||
d159ac37 AH |
660 | instance->callbacks = callbacks; |
661 | instance->quit_program = 0; | |
662 | instance->is_init = 0; | |
663 | instance->active_buffers = 0; | |
664 | pthread_mutex_init(&instance->mutex, NULL); | |
665 | ||
666 | if(sock_path) | |
667 | instance->sock_path = strdup(sock_path); | |
668 | else | |
669 | instance->sock_path = NULL; | |
670 | ||
671 | return instance; | |
672 | } | |
673 | ||
674 | int libustd_init_instance(struct libustd_instance *instance) | |
675 | { | |
676 | int result; | |
f3f8cc91 | 677 | result = ustcomm_init_ustd(instance->comm, instance->sock_path); |
d159ac37 AH |
678 | if(result == -1) { |
679 | ERR("failed to initialize socket"); | |
680 | return 1; | |
681 | } | |
682 | instance->is_init = 1; | |
683 | return 0; | |
684 | } | |
685 |