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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 | ||
d6c9f207 AH |
32 | #include <ust/ustd.h> |
33 | #include "lowlevel.h" | |
d159ac37 AH |
34 | #include "usterr.h" |
35 | #include "ustcomm.h" | |
36 | ||
37 | /* return value: 0 = subbuffer is finished, it won't produce data anymore | |
38 | * 1 = got subbuffer successfully | |
39 | * <0 = error | |
40 | */ | |
41 | ||
42 | #define GET_SUBBUF_OK 1 | |
43 | #define GET_SUBBUF_DONE 0 | |
44 | #define GET_SUBBUF_DIED 2 | |
45 | ||
46 | #define PUT_SUBBUF_OK 1 | |
47 | #define PUT_SUBBUF_DIED 0 | |
48 | #define PUT_SUBBUF_PUSHED 2 | |
49 | #define PUT_SUBBUF_DONE 3 | |
50 | ||
51 | #define UNIX_PATH_MAX 108 | |
52 | ||
53 | int get_subbuffer(struct buffer_info *buf) | |
54 | { | |
55 | char *send_msg=NULL; | |
56 | char *received_msg=NULL; | |
57 | char *rep_code=NULL; | |
58 | int retval; | |
59 | int result; | |
60 | ||
61 | asprintf(&send_msg, "get_subbuffer %s", buf->name); | |
f3f8cc91 | 62 | result = ustcomm_send_request(buf->conn, send_msg, &received_msg); |
d159ac37 AH |
63 | if((result == -1 && (errno == ECONNRESET || errno == EPIPE)) || result == 0) { |
64 | DBG("app died while being traced"); | |
65 | retval = GET_SUBBUF_DIED; | |
66 | goto end; | |
67 | } | |
68 | else if(result < 0) { | |
69 | ERR("get_subbuffer: ustcomm_send_request failed"); | |
70 | retval = -1; | |
71 | goto end; | |
72 | } | |
73 | ||
74 | result = sscanf(received_msg, "%as %ld", &rep_code, &buf->consumed_old); | |
75 | if(result != 2 && result != 1) { | |
76 | ERR("unable to parse response to get_subbuffer"); | |
77 | retval = -1; | |
78 | free(received_msg); | |
79 | goto end_rep; | |
80 | } | |
81 | ||
82 | if(!strcmp(rep_code, "OK")) { | |
83 | DBG("got subbuffer %s", buf->name); | |
84 | retval = GET_SUBBUF_OK; | |
85 | } | |
86 | else if(nth_token_is(received_msg, "END", 0) == 1) { | |
87 | retval = GET_SUBBUF_DONE; | |
88 | goto end_rep; | |
89 | } | |
90 | else if(!strcmp(received_msg, "NOTFOUND")) { | |
91 | DBG("For buffer %s, the trace was not found. This likely means it was destroyed by the user.", buf->name); | |
92 | retval = GET_SUBBUF_DIED; | |
93 | goto end_rep; | |
94 | } | |
95 | else { | |
96 | DBG("error getting subbuffer %s", buf->name); | |
97 | retval = -1; | |
98 | } | |
99 | ||
100 | /* FIXME: free correctly the stuff */ | |
101 | end_rep: | |
102 | if(rep_code) | |
103 | free(rep_code); | |
104 | end: | |
105 | if(send_msg) | |
106 | free(send_msg); | |
107 | if(received_msg) | |
108 | free(received_msg); | |
109 | ||
110 | return retval; | |
111 | } | |
112 | ||
113 | int put_subbuffer(struct buffer_info *buf) | |
114 | { | |
115 | char *send_msg=NULL; | |
116 | char *received_msg=NULL; | |
117 | char *rep_code=NULL; | |
118 | int retval; | |
119 | int result; | |
120 | ||
121 | asprintf(&send_msg, "put_subbuffer %s %ld", buf->name, buf->consumed_old); | |
f3f8cc91 | 122 | result = ustcomm_send_request(buf->conn, send_msg, &received_msg); |
d159ac37 AH |
123 | if(result < 0 && (errno == ECONNRESET || errno == EPIPE)) { |
124 | retval = PUT_SUBBUF_DIED; | |
125 | goto end; | |
126 | } | |
127 | else if(result < 0) { | |
128 | ERR("put_subbuffer: send_message failed"); | |
129 | retval = -1; | |
130 | goto end; | |
131 | } | |
132 | else if(result == 0) { | |
133 | /* Program seems finished. However this might not be | |
134 | * the last subbuffer that has to be collected. | |
135 | */ | |
136 | retval = PUT_SUBBUF_DIED; | |
137 | goto end; | |
138 | } | |
139 | ||
140 | result = sscanf(received_msg, "%as", &rep_code); | |
141 | if(result != 1) { | |
142 | ERR("unable to parse response to put_subbuffer"); | |
143 | retval = -1; | |
144 | goto end_rep; | |
145 | } | |
146 | ||
147 | if(!strcmp(rep_code, "OK")) { | |
148 | DBG("subbuffer put %s", buf->name); | |
149 | retval = PUT_SUBBUF_OK; | |
150 | } | |
151 | else if(!strcmp(received_msg, "NOTFOUND")) { | |
152 | DBG("For buffer %s, the trace was not found. This likely means it was destroyed by the user.", buf->name); | |
153 | /* However, maybe this was not the last subbuffer. So | |
154 | * we return the program died. | |
155 | */ | |
156 | retval = PUT_SUBBUF_DIED; | |
157 | goto end_rep; | |
158 | } | |
159 | else { | |
160 | DBG("put_subbuffer: received error, we were pushed"); | |
161 | retval = PUT_SUBBUF_PUSHED; | |
162 | goto end_rep; | |
163 | } | |
164 | ||
165 | end_rep: | |
166 | if(rep_code) | |
167 | free(rep_code); | |
168 | ||
169 | end: | |
170 | if(send_msg) | |
171 | free(send_msg); | |
172 | if(received_msg) | |
173 | free(received_msg); | |
174 | ||
175 | return retval; | |
176 | } | |
177 | ||
178 | void decrement_active_buffers(void *arg) | |
179 | { | |
180 | struct libustd_instance *instance = arg; | |
181 | pthread_mutex_lock(&instance->mutex); | |
182 | instance->active_buffers--; | |
183 | pthread_mutex_unlock(&instance->mutex); | |
184 | } | |
185 | ||
186 | struct buffer_info *connect_buffer(struct libustd_instance *instance, pid_t pid, const char *bufname) | |
187 | { | |
188 | struct buffer_info *buf; | |
189 | char *send_msg; | |
190 | char *received_msg; | |
191 | int result; | |
d159ac37 AH |
192 | struct shmid_ds shmds; |
193 | ||
7032c7d3 | 194 | buf = (struct buffer_info *) zmalloc(sizeof(struct buffer_info)); |
d159ac37 AH |
195 | if(buf == NULL) { |
196 | ERR("add_buffer: insufficient memory"); | |
197 | return NULL; | |
198 | } | |
199 | ||
f3f8cc91 AH |
200 | buf->conn = malloc(sizeof(struct ustcomm_connection)); |
201 | if(buf->conn == NULL) { | |
202 | ERR("add_buffer: insufficient memory"); | |
203 | free(buf); | |
204 | return NULL; | |
205 | } | |
206 | ||
d159ac37 AH |
207 | buf->name = bufname; |
208 | buf->pid = pid; | |
209 | ||
210 | /* connect to app */ | |
f3f8cc91 | 211 | result = ustcomm_connect_app(buf->pid, buf->conn); |
d159ac37 AH |
212 | if(result) { |
213 | WARN("unable to connect to process, it probably died before we were able to connect"); | |
214 | return NULL; | |
215 | } | |
216 | ||
217 | /* get pidunique */ | |
218 | asprintf(&send_msg, "get_pidunique"); | |
f3f8cc91 | 219 | result = ustcomm_send_request(buf->conn, send_msg, &received_msg); |
d159ac37 AH |
220 | free(send_msg); |
221 | if(result == -1) { | |
222 | ERR("problem in ustcomm_send_request(get_pidunique)"); | |
223 | return NULL; | |
224 | } | |
225 | if(result == 0) { | |
226 | goto error; | |
227 | } | |
228 | ||
229 | result = sscanf(received_msg, "%lld", &buf->pidunique); | |
230 | if(result != 1) { | |
231 | ERR("unable to parse response to get_pidunique"); | |
232 | return NULL; | |
233 | } | |
234 | free(received_msg); | |
235 | DBG("got pidunique %lld", buf->pidunique); | |
236 | ||
237 | /* get shmid */ | |
238 | asprintf(&send_msg, "get_shmid %s", buf->name); | |
f3f8cc91 | 239 | result = ustcomm_send_request(buf->conn, send_msg, &received_msg); |
d159ac37 AH |
240 | free(send_msg); |
241 | if(result == -1) { | |
242 | ERR("problem in ustcomm_send_request(get_shmid)"); | |
243 | return NULL; | |
244 | } | |
245 | if(result == 0) { | |
246 | goto error; | |
247 | } | |
248 | ||
249 | result = sscanf(received_msg, "%d %d", &buf->shmid, &buf->bufstruct_shmid); | |
250 | if(result != 2) { | |
251 | ERR("unable to parse response to get_shmid (\"%s\")", received_msg); | |
252 | return NULL; | |
253 | } | |
254 | free(received_msg); | |
255 | DBG("got shmids %d %d", buf->shmid, buf->bufstruct_shmid); | |
256 | ||
257 | /* get n_subbufs */ | |
258 | asprintf(&send_msg, "get_n_subbufs %s", buf->name); | |
f3f8cc91 | 259 | result = ustcomm_send_request(buf->conn, send_msg, &received_msg); |
d159ac37 AH |
260 | free(send_msg); |
261 | if(result == -1) { | |
262 | ERR("problem in ustcomm_send_request(g_n_subbufs)"); | |
263 | return NULL; | |
264 | } | |
265 | if(result == 0) { | |
266 | goto error; | |
267 | } | |
268 | ||
269 | result = sscanf(received_msg, "%d", &buf->n_subbufs); | |
270 | if(result != 1) { | |
271 | ERR("unable to parse response to get_n_subbufs"); | |
272 | return NULL; | |
273 | } | |
274 | free(received_msg); | |
275 | DBG("got n_subbufs %d", buf->n_subbufs); | |
276 | ||
277 | /* get subbuf size */ | |
278 | asprintf(&send_msg, "get_subbuf_size %s", buf->name); | |
f3f8cc91 | 279 | result = ustcomm_send_request(buf->conn, send_msg, &received_msg); |
d159ac37 AH |
280 | free(send_msg); |
281 | if(result == -1) { | |
282 | ERR("problem in ustcomm_send_request(get_subbuf_size)"); | |
283 | return NULL; | |
284 | } | |
285 | if(result == 0) { | |
286 | goto error; | |
287 | } | |
288 | ||
289 | result = sscanf(received_msg, "%d", &buf->subbuf_size); | |
290 | if(result != 1) { | |
291 | ERR("unable to parse response to get_subbuf_size"); | |
292 | return NULL; | |
293 | } | |
294 | free(received_msg); | |
295 | DBG("got subbuf_size %d", buf->subbuf_size); | |
296 | ||
297 | /* attach memory */ | |
298 | buf->mem = shmat(buf->shmid, NULL, 0); | |
299 | if(buf->mem == (void *) 0) { | |
300 | PERROR("shmat"); | |
301 | return NULL; | |
302 | } | |
303 | DBG("successfully attached buffer memory"); | |
304 | ||
305 | buf->bufstruct_mem = shmat(buf->bufstruct_shmid, NULL, 0); | |
306 | if(buf->bufstruct_mem == (void *) 0) { | |
307 | PERROR("shmat"); | |
308 | return NULL; | |
309 | } | |
310 | DBG("successfully attached buffer bufstruct memory"); | |
311 | ||
312 | /* obtain info on the memory segment */ | |
313 | result = shmctl(buf->shmid, IPC_STAT, &shmds); | |
314 | if(result == -1) { | |
315 | PERROR("shmctl"); | |
316 | return NULL; | |
317 | } | |
318 | buf->memlen = shmds.shm_segsz; | |
319 | ||
320 | if(instance->callbacks->on_open_buffer) | |
321 | instance->callbacks->on_open_buffer(instance->callbacks, buf); | |
322 | ||
323 | pthread_mutex_lock(&instance->mutex); | |
324 | instance->active_buffers++; | |
325 | pthread_mutex_unlock(&instance->mutex); | |
326 | ||
327 | return buf; | |
328 | ||
329 | error: | |
330 | free(buf); | |
331 | return NULL; | |
332 | } | |
333 | ||
334 | static void destroy_buffer(struct libustd_callbacks *callbacks, | |
335 | struct buffer_info *buf) | |
336 | { | |
337 | int result; | |
338 | ||
f3f8cc91 | 339 | result = ustcomm_close_app(buf->conn); |
d159ac37 AH |
340 | if(result == -1) { |
341 | WARN("problem calling ustcomm_close_app"); | |
342 | } | |
343 | ||
344 | result = shmdt(buf->mem); | |
345 | if(result == -1) { | |
346 | PERROR("shmdt"); | |
347 | } | |
348 | ||
349 | result = shmdt(buf->bufstruct_mem); | |
350 | if(result == -1) { | |
351 | PERROR("shmdt"); | |
352 | } | |
353 | ||
354 | if(callbacks->on_close_buffer) | |
355 | callbacks->on_close_buffer(callbacks, buf); | |
356 | ||
f3f8cc91 | 357 | free(buf->conn); |
d159ac37 AH |
358 | free(buf); |
359 | } | |
360 | ||
361 | int consumer_loop(struct libustd_instance *instance, struct buffer_info *buf) | |
362 | { | |
363 | int result; | |
364 | ||
365 | pthread_cleanup_push(decrement_active_buffers, instance); | |
366 | ||
367 | for(;;) { | |
368 | /* get the subbuffer */ | |
369 | result = get_subbuffer(buf); | |
370 | if(result == -1) { | |
371 | ERR("error getting subbuffer"); | |
372 | continue; | |
373 | } | |
374 | else if(result == GET_SUBBUF_DONE) { | |
375 | /* this is done */ | |
376 | break; | |
377 | } | |
378 | else if(result == GET_SUBBUF_DIED) { | |
379 | finish_consuming_dead_subbuffer(instance->callbacks, buf); | |
380 | break; | |
381 | } | |
382 | ||
383 | if(instance->callbacks->on_read_subbuffer) | |
384 | instance->callbacks->on_read_subbuffer(instance->callbacks, buf); | |
385 | ||
386 | /* put the subbuffer */ | |
387 | result = put_subbuffer(buf); | |
388 | if(result == -1) { | |
389 | ERR("unknown error putting subbuffer (channel=%s)", buf->name); | |
390 | break; | |
391 | } | |
392 | else if(result == PUT_SUBBUF_PUSHED) { | |
393 | ERR("Buffer overflow (channel=%s), reader pushed. This channel will not be usable passed this point.", buf->name); | |
394 | break; | |
395 | } | |
396 | else if(result == PUT_SUBBUF_DIED) { | |
397 | DBG("application died while putting subbuffer"); | |
398 | /* Skip the first subbuffer. We are not sure it is trustable | |
399 | * because the put_subbuffer() did not complete. | |
400 | */ | |
401 | if(instance->callbacks->on_put_error) | |
402 | instance->callbacks->on_put_error(instance->callbacks, buf); | |
403 | ||
404 | finish_consuming_dead_subbuffer(instance->callbacks, buf); | |
405 | break; | |
406 | } | |
407 | else if(result == PUT_SUBBUF_DONE) { | |
408 | /* Done with this subbuffer */ | |
409 | /* FIXME: add a case where this branch is used? Upon | |
410 | * normal trace termination, at put_subbuf time, a | |
411 | * special last-subbuffer code could be returned by | |
412 | * the listener. | |
413 | */ | |
414 | break; | |
415 | } | |
416 | else if(result == PUT_SUBBUF_OK) { | |
417 | } | |
418 | } | |
419 | ||
420 | DBG("thread for buffer %s is stopping", buf->name); | |
421 | ||
422 | /* FIXME: destroy, unalloc... */ | |
423 | ||
424 | pthread_cleanup_pop(1); | |
425 | ||
426 | return 0; | |
427 | } | |
428 | ||
429 | struct consumer_thread_args { | |
430 | pid_t pid; | |
431 | const char *bufname; | |
432 | struct libustd_instance *instance; | |
433 | }; | |
434 | ||
435 | void *consumer_thread(void *arg) | |
436 | { | |
437 | struct buffer_info *buf; | |
438 | struct consumer_thread_args *args = (struct consumer_thread_args *) arg; | |
439 | int result; | |
440 | sigset_t sigset; | |
441 | ||
442 | DBG("GOT ARGS: pid %d bufname %s", args->pid, args->bufname); | |
443 | ||
444 | if(args->instance->callbacks->on_new_thread) | |
445 | args->instance->callbacks->on_new_thread(args->instance->callbacks); | |
446 | ||
447 | /* Block signals that should be handled by the main thread. */ | |
448 | result = sigemptyset(&sigset); | |
449 | if(result == -1) { | |
450 | PERROR("sigemptyset"); | |
451 | goto end; | |
452 | } | |
453 | result = sigaddset(&sigset, SIGTERM); | |
454 | if(result == -1) { | |
455 | PERROR("sigaddset"); | |
456 | goto end; | |
457 | } | |
458 | result = sigaddset(&sigset, SIGINT); | |
459 | if(result == -1) { | |
460 | PERROR("sigaddset"); | |
461 | goto end; | |
462 | } | |
463 | result = sigprocmask(SIG_BLOCK, &sigset, NULL); | |
464 | if(result == -1) { | |
465 | PERROR("sigprocmask"); | |
466 | goto end; | |
467 | } | |
468 | ||
469 | buf = connect_buffer(args->instance, args->pid, args->bufname); | |
470 | if(buf == NULL) { | |
471 | ERR("failed to connect to buffer"); | |
472 | goto end; | |
473 | } | |
474 | ||
475 | consumer_loop(args->instance, buf); | |
476 | ||
477 | destroy_buffer(args->instance->callbacks, buf); | |
478 | ||
479 | end: | |
480 | ||
481 | if(args->instance->callbacks->on_close_thread) | |
482 | args->instance->callbacks->on_close_thread(args->instance->callbacks); | |
483 | ||
484 | free((void *)args->bufname); | |
485 | free(args); | |
486 | return NULL; | |
487 | } | |
488 | ||
489 | int start_consuming_buffer( | |
490 | struct libustd_instance *instance, pid_t pid, const char *bufname) | |
491 | { | |
492 | pthread_t thr; | |
493 | struct consumer_thread_args *args; | |
494 | int result; | |
495 | ||
496 | DBG("beginning of start_consuming_buffer: args: pid %d bufname %s", pid, bufname); | |
497 | ||
7032c7d3 | 498 | args = (struct consumer_thread_args *) zmalloc(sizeof(struct consumer_thread_args)); |
d159ac37 AH |
499 | |
500 | args->pid = pid; | |
501 | args->bufname = strdup(bufname); | |
502 | args->instance = instance; | |
503 | DBG("beginning2 of start_consuming_buffer: args: pid %d bufname %s", args->pid, args->bufname); | |
504 | ||
505 | result = pthread_create(&thr, NULL, consumer_thread, args); | |
506 | if(result == -1) { | |
507 | ERR("pthread_create failed"); | |
508 | return -1; | |
509 | } | |
510 | result = pthread_detach(thr); | |
511 | if(result == -1) { | |
512 | ERR("pthread_detach failed"); | |
513 | return -1; | |
514 | } | |
515 | DBG("end of start_consuming_buffer: args: pid %d bufname %s", args->pid, args->bufname); | |
516 | ||
517 | return 0; | |
518 | } | |
519 | ||
520 | int libustd_start_instance(struct libustd_instance *instance) | |
521 | { | |
522 | int result; | |
523 | int timeout = -1; | |
524 | ||
525 | if(!instance->is_init) { | |
526 | ERR("libustd instance not initialized"); | |
527 | return 1; | |
528 | } | |
529 | ||
530 | /* app loop */ | |
531 | for(;;) { | |
532 | char *recvbuf; | |
533 | ||
534 | /* check for requests on our public socket */ | |
f3f8cc91 | 535 | result = ustcomm_ustd_recv_message(instance->comm, &recvbuf, NULL, timeout); |
d159ac37 AH |
536 | if(result == -1 && errno == EINTR) { |
537 | /* Caught signal */ | |
538 | } | |
539 | else if(result == -1) { | |
540 | ERR("error in ustcomm_ustd_recv_message"); | |
541 | goto loop_end; | |
542 | } | |
543 | else if(result > 0) { | |
544 | if(!strncmp(recvbuf, "collect", 7)) { | |
545 | pid_t pid; | |
546 | char *bufname; | |
547 | int result; | |
548 | ||
549 | result = sscanf(recvbuf, "%*s %d %50as", &pid, &bufname); | |
550 | if(result != 2) { | |
551 | ERR("parsing error: %s", recvbuf); | |
552 | goto free_bufname; | |
553 | } | |
554 | ||
555 | result = start_consuming_buffer(instance, pid, bufname); | |
556 | if(result < 0) { | |
557 | ERR("error in add_buffer"); | |
558 | goto free_bufname; | |
559 | } | |
560 | ||
561 | free_bufname: | |
562 | free(bufname); | |
563 | } | |
564 | else if(!strncmp(recvbuf, "exit", 4)) { | |
565 | /* Only there to force poll to return */ | |
566 | } | |
567 | else { | |
568 | WARN("unknown command: %s", recvbuf); | |
569 | } | |
570 | ||
571 | free(recvbuf); | |
572 | } | |
573 | ||
574 | loop_end: | |
575 | ||
576 | if(instance->quit_program) { | |
577 | pthread_mutex_lock(&instance->mutex); | |
578 | if(instance->active_buffers == 0) { | |
579 | pthread_mutex_unlock(&instance->mutex); | |
580 | break; | |
581 | } | |
582 | pthread_mutex_unlock(&instance->mutex); | |
583 | timeout = 100; | |
584 | } | |
585 | } | |
586 | ||
587 | if(instance->callbacks->on_trace_end) | |
588 | instance->callbacks->on_trace_end(instance); | |
589 | ||
590 | libustd_delete_instance(instance); | |
591 | ||
592 | return 0; | |
593 | } | |
594 | ||
595 | void libustd_delete_instance(struct libustd_instance *instance) | |
596 | { | |
597 | if(instance->is_init) | |
f3f8cc91 | 598 | ustcomm_fini_ustd(instance->comm); |
d159ac37 AH |
599 | |
600 | pthread_mutex_destroy(&instance->mutex); | |
601 | free(instance->sock_path); | |
f3f8cc91 | 602 | free(instance->comm); |
d159ac37 AH |
603 | free(instance); |
604 | } | |
605 | ||
606 | int libustd_stop_instance(struct libustd_instance *instance, int send_msg) | |
607 | { | |
608 | int result; | |
609 | int fd; | |
610 | int bytes = 0; | |
611 | ||
612 | char msg[] = "exit"; | |
613 | ||
614 | instance->quit_program = 1; | |
615 | ||
616 | if(!send_msg) | |
617 | return 0; | |
618 | ||
619 | /* Send a message through the socket to force poll to return */ | |
620 | ||
621 | struct sockaddr_un addr; | |
622 | ||
623 | result = fd = socket(PF_UNIX, SOCK_STREAM, 0); | |
624 | if(result == -1) { | |
625 | PERROR("socket"); | |
626 | return 1; | |
627 | } | |
628 | ||
629 | addr.sun_family = AF_UNIX; | |
630 | ||
631 | strncpy(addr.sun_path, instance->sock_path, UNIX_PATH_MAX); | |
632 | addr.sun_path[UNIX_PATH_MAX-1] = '\0'; | |
633 | ||
634 | result = connect(fd, (struct sockaddr *)&addr, sizeof(addr)); | |
635 | if(result == -1) { | |
636 | PERROR("connect"); | |
637 | } | |
638 | ||
639 | while(bytes != sizeof(msg)) | |
640 | bytes += send(fd, msg, sizeof(msg), 0); | |
641 | ||
642 | close(fd); | |
643 | ||
644 | return 0; | |
645 | } | |
646 | ||
647 | struct libustd_instance *libustd_new_instance( | |
648 | struct libustd_callbacks *callbacks, char *sock_path) | |
649 | { | |
650 | struct libustd_instance *instance = | |
7032c7d3 | 651 | zmalloc(sizeof(struct libustd_instance)); |
d159ac37 AH |
652 | if(!instance) |
653 | return NULL; | |
654 | ||
f3f8cc91 AH |
655 | instance->comm = malloc(sizeof(struct ustcomm_ustd)); |
656 | if(!instance->comm) { | |
657 | free(instance); | |
658 | return NULL; | |
659 | } | |
660 | ||
d159ac37 AH |
661 | instance->callbacks = callbacks; |
662 | instance->quit_program = 0; | |
663 | instance->is_init = 0; | |
664 | instance->active_buffers = 0; | |
665 | pthread_mutex_init(&instance->mutex, NULL); | |
666 | ||
667 | if(sock_path) | |
668 | instance->sock_path = strdup(sock_path); | |
669 | else | |
670 | instance->sock_path = NULL; | |
671 | ||
672 | return instance; | |
673 | } | |
674 | ||
675 | int libustd_init_instance(struct libustd_instance *instance) | |
676 | { | |
677 | int result; | |
f3f8cc91 | 678 | result = ustcomm_init_ustd(instance->comm, instance->sock_path); |
d159ac37 AH |
679 | if(result == -1) { |
680 | ERR("failed to initialize socket"); | |
681 | return 1; | |
682 | } | |
683 | instance->is_init = 1; | |
684 | return 0; | |
685 | } | |
686 |