source: mainline/uspace/srv/volsrv/volsrv.c@ 9e45a41

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 9e45a41 was 9e45a41, checked in by Jiri Svoboda <jiri@…>, 6 years ago

Make volume server less chatty
  • Property mode set to 100644
File size: 13.2 KB
Line 
1/*
2 * Copyright (c) 2015 Jiri Svoboda
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup volsrv
30 * @{
31 */
32/**
33 * @file Volume service
34 */
35
36#include <async.h>
37#include <errno.h>
38#include <str_error.h>
39#include <io/log.h>
40#include <ipc/services.h>
41#include <ipc/vol.h>
42#include <loc.h>
43#include <macros.h>
44#include <stdio.h>
45#include <stdlib.h>
46#include <task.h>
47#include <types/vol.h>
48
49#include "mkfs.h"
50#include "part.h"
51#include "volume.h"
52
53#define NAME "volsrv"
54
55const char *vol_cfg_file = "/cfg/volsrv.sif";
56
57static void vol_client_conn(ipc_call_t *, void *);
58
59static errno_t vol_init(void)
60{
61 errno_t rc;
62 vol_volumes_t *volumes = NULL;
63 vol_parts_t *parts = NULL;
64
65 log_msg(LOG_DEFAULT, LVL_DEBUG, "vol_init()");
66
67 rc = vol_volumes_create(vol_cfg_file, &volumes);
68 if (rc != EOK)
69 goto error;
70
71 rc = vol_parts_create(volumes, &parts);
72 if (rc != EOK)
73 goto error;
74
75 rc = vol_part_discovery_start(parts);
76 if (rc != EOK)
77 goto error;
78
79 async_set_fallback_port_handler(vol_client_conn, parts);
80
81 rc = loc_server_register(NAME);
82 if (rc != EOK) {
83 log_msg(LOG_DEFAULT, LVL_ERROR, "Failed registering server: %s.", str_error(rc));
84 rc = EEXIST;
85 }
86
87 service_id_t sid;
88 rc = loc_service_register(SERVICE_NAME_VOLSRV, &sid);
89 if (rc != EOK) {
90 log_msg(LOG_DEFAULT, LVL_ERROR, "Failed registering service: %s.", str_error(rc));
91 rc = EEXIST;
92 goto error;
93 }
94
95 return EOK;
96error:
97 vol_volumes_destroy(volumes);
98 vol_parts_destroy(parts);
99 return rc;
100}
101
102static void vol_get_parts_srv(vol_parts_t *parts, ipc_call_t *icall)
103{
104 ipc_call_t call;
105 size_t size;
106 size_t act_size;
107 errno_t rc;
108
109 if (!async_data_read_receive(&call, &size)) {
110 async_answer_0(&call, EREFUSED);
111 async_answer_0(icall, EREFUSED);
112 return;
113 }
114
115 service_id_t *id_buf = (service_id_t *) malloc(size);
116 if (id_buf == NULL) {
117 async_answer_0(&call, ENOMEM);
118 async_answer_0(icall, ENOMEM);
119 return;
120 }
121
122 rc = vol_part_get_ids(parts, id_buf, size, &act_size);
123 if (rc != EOK) {
124 async_answer_0(&call, rc);
125 async_answer_0(icall, rc);
126 return;
127 }
128
129 errno_t retval = async_data_read_finalize(&call, id_buf, size);
130 free(id_buf);
131
132 async_answer_1(icall, retval, act_size);
133}
134
135static void vol_part_add_srv(vol_parts_t *parts, ipc_call_t *icall)
136{
137 service_id_t sid;
138 errno_t rc;
139
140 sid = ipc_get_arg1(icall);
141
142 rc = vol_part_add_part(parts, sid);
143 if (rc != EOK) {
144 async_answer_0(icall, rc);
145 return;
146 }
147
148 async_answer_0(icall, EOK);
149}
150
151static void vol_part_info_srv(vol_parts_t *parts, ipc_call_t *icall)
152{
153 service_id_t sid;
154 vol_part_t *part;
155 vol_part_info_t pinfo;
156 errno_t rc;
157
158 sid = ipc_get_arg1(icall);
159 log_msg(LOG_DEFAULT, LVL_DEBUG, "vol_part_info_srv(%zu)",
160 sid);
161 rc = vol_part_find_by_id_ref(parts, sid, &part);
162 if (rc != EOK) {
163 async_answer_0(icall, ENOENT);
164 return;
165 }
166
167 rc = vol_part_get_info(part, &pinfo);
168 if (rc != EOK) {
169 async_answer_0(icall, EIO);
170 goto error;
171 }
172
173 ipc_call_t call;
174 size_t size;
175 if (!async_data_read_receive(&call, &size)) {
176 async_answer_0(&call, EREFUSED);
177 async_answer_0(icall, EREFUSED);
178 goto error;
179 }
180
181 if (size != sizeof(vol_part_info_t)) {
182 async_answer_0(&call, EINVAL);
183 async_answer_0(icall, EINVAL);
184 goto error;
185 }
186
187 rc = async_data_read_finalize(&call, &pinfo,
188 min(size, sizeof(pinfo)));
189 if (rc != EOK) {
190 async_answer_0(&call, rc);
191 async_answer_0(icall, rc);
192 goto error;
193 }
194
195 async_answer_0(icall, EOK);
196error:
197 vol_part_del_ref(part);
198}
199
200static void vol_part_eject_srv(vol_parts_t *parts, ipc_call_t *icall)
201{
202 service_id_t sid;
203 vol_part_t *part;
204 errno_t rc;
205
206 sid = ipc_get_arg1(icall);
207 log_msg(LOG_DEFAULT, LVL_DEBUG, "vol_part_eject_srv(%zu)", sid);
208
209 rc = vol_part_find_by_id_ref(parts, sid, &part);
210 if (rc != EOK) {
211 async_answer_0(icall, ENOENT);
212 return;
213 }
214
215 rc = vol_part_eject_part(part);
216 if (rc != EOK) {
217 async_answer_0(icall, EIO);
218 goto error;
219 }
220
221 async_answer_0(icall, EOK);
222error:
223 vol_part_del_ref(part);
224}
225
226static void vol_part_insert_srv(vol_parts_t *parts, ipc_call_t *icall)
227{
228 service_id_t sid;
229 vol_part_t *part;
230 errno_t rc;
231
232 sid = ipc_get_arg1(icall);
233 log_msg(LOG_DEFAULT, LVL_DEBUG, "vol_part_insert_srv(%zu)", sid);
234
235 rc = vol_part_find_by_id_ref(parts, sid, &part);
236 if (rc != EOK) {
237 async_answer_0(icall, ENOENT);
238 return;
239 }
240
241 rc = vol_part_insert_part(part);
242 if (rc != EOK) {
243 async_answer_0(icall, EIO);
244 goto error;
245 }
246
247 async_answer_0(icall, EOK);
248error:
249 vol_part_del_ref(part);
250}
251
252static void vol_part_insert_by_path_srv(vol_parts_t *parts, ipc_call_t *icall)
253{
254 vol_part_t *part;
255 char *path = NULL;
256 errno_t rc;
257
258 log_msg(LOG_DEFAULT, LVL_DEBUG, "vol_part_insert_by_path_srv()");
259
260 rc = async_data_write_accept((void **)&path, true, 0, VOL_MOUNTP_MAXLEN,
261 0, NULL);
262 if (rc != EOK) {
263 async_answer_0(icall, rc);
264 goto error;
265 }
266
267 rc = vol_part_find_by_path_ref(parts, path, &part);
268 if (rc != EOK) {
269 async_answer_0(icall, ENOENT);
270 goto error;
271 }
272
273 rc = vol_part_insert_part(part);
274 if (rc != EOK) {
275 async_answer_0(icall, rc);
276 vol_part_del_ref(part);
277 goto error;
278 }
279
280 free(path);
281 vol_part_del_ref(part);
282 async_answer_0(icall, EOK);
283
284 return;
285error:
286 if (path != NULL)
287 free(path);
288}
289
290static void vol_part_empty_srv(vol_parts_t *parts, ipc_call_t *icall)
291{
292 service_id_t sid;
293 vol_part_t *part;
294 errno_t rc;
295
296 sid = ipc_get_arg1(icall);
297 log_msg(LOG_DEFAULT, LVL_DEBUG, "vol_part_empty_srv(%zu)", sid);
298
299 rc = vol_part_find_by_id_ref(parts, sid, &part);
300 if (rc != EOK) {
301 async_answer_0(icall, ENOENT);
302 return;
303 }
304
305 rc = vol_part_empty_part(part);
306 if (rc != EOK) {
307 async_answer_0(icall, EIO);
308 goto error;
309 }
310
311 async_answer_0(icall, EOK);
312error:
313 vol_part_del_ref(part);
314}
315
316static void vol_part_get_lsupp_srv(vol_parts_t *parts, ipc_call_t *icall)
317{
318 vol_fstype_t fstype;
319 vol_label_supp_t vlsupp;
320 errno_t rc;
321
322 fstype = ipc_get_arg1(icall);
323 log_msg(LOG_DEFAULT, LVL_DEBUG, "vol_part_get_lsupp_srv(%u)",
324 fstype);
325
326 volsrv_part_get_lsupp(fstype, &vlsupp);
327
328 ipc_call_t call;
329 size_t size;
330 if (!async_data_read_receive(&call, &size)) {
331 async_answer_0(&call, EREFUSED);
332 async_answer_0(icall, EREFUSED);
333 return;
334 }
335
336 if (size != sizeof(vol_label_supp_t)) {
337 async_answer_0(&call, EINVAL);
338 async_answer_0(icall, EINVAL);
339 return;
340 }
341
342 rc = async_data_read_finalize(&call, &vlsupp,
343 min(size, sizeof(vlsupp)));
344 if (rc != EOK) {
345 async_answer_0(&call, rc);
346 async_answer_0(icall, rc);
347 return;
348 }
349
350 async_answer_0(icall, EOK);
351}
352
353static void vol_part_mkfs_srv(vol_parts_t *parts, ipc_call_t *icall)
354{
355 service_id_t sid;
356 vol_part_t *part;
357 vol_fstype_t fstype;
358 char *label = NULL;
359 char *mountp = NULL;
360 errno_t rc;
361
362 log_msg(LOG_DEFAULT, LVL_DEBUG, "vol_part_mkfs_srv()");
363
364 sid = ipc_get_arg1(icall);
365 fstype = ipc_get_arg2(icall);
366
367 rc = async_data_write_accept((void **)&label, true, 0, VOL_LABEL_MAXLEN,
368 0, NULL);
369 if (rc != EOK) {
370 async_answer_0(icall, rc);
371 goto error;
372 }
373
374 if (label != NULL) {
375 log_msg(LOG_DEFAULT, LVL_DEBUG, "vol_part_mkfs_srv: label='%s'",
376 label);
377 }
378
379 rc = async_data_write_accept((void **)&mountp, true, 0, VOL_MOUNTP_MAXLEN,
380 0, NULL);
381 if (rc != EOK) {
382 async_answer_0(icall, rc);
383 goto error;
384 }
385
386 if (mountp != NULL) {
387 log_msg(LOG_DEFAULT, LVL_DEBUG, "vol_part_mkfs_srv: mountp='%s'",
388 mountp);
389 }
390
391 rc = vol_part_find_by_id_ref(parts, sid, &part);
392 if (rc != EOK) {
393 async_answer_0(icall, ENOENT);
394 goto error;
395 }
396
397 rc = vol_part_mkfs_part(part, fstype, label, mountp);
398 if (rc != EOK) {
399 async_answer_0(icall, rc);
400 vol_part_del_ref(part);
401 goto error;
402 }
403
404 free(label);
405 free(mountp);
406 async_answer_0(icall, EOK);
407
408 return;
409error:
410 if (label != NULL)
411 free(label);
412 if (mountp != NULL)
413 free(mountp);
414}
415
416static void vol_part_set_mountp_srv(vol_parts_t *parts,
417 ipc_call_t *icall)
418{
419 service_id_t sid;
420 vol_part_t *part;
421 char *mountp;
422 errno_t rc;
423
424 log_msg(LOG_DEFAULT, LVL_DEBUG, "vol_part_set_mountp_srv()");
425
426 sid = ipc_get_arg1(icall);
427
428 rc = async_data_write_accept((void **)&mountp, true, 0,
429 VOL_MOUNTP_MAXLEN, 0, NULL);
430 if (rc != EOK) {
431 async_answer_0(icall, rc);
432 return;
433 }
434
435 if (mountp != NULL) {
436 log_msg(LOG_DEFAULT, LVL_DEBUG,
437 "vol_part_set_mountp_srv: mountp='%s'", mountp);
438 }
439
440 rc = vol_part_find_by_id_ref(parts, sid, &part);
441 if (rc != EOK) {
442 free(mountp);
443 async_answer_0(icall, ENOENT);
444 return;
445 }
446
447 rc = vol_part_set_mountp_part(part, mountp);
448 if (rc != EOK) {
449 free(mountp);
450 async_answer_0(icall, rc);
451 vol_part_del_ref(part);
452 return;
453 }
454
455 free(mountp);
456 async_answer_0(icall, EOK);
457}
458
459static void vol_get_volumes_srv(vol_parts_t *parts, ipc_call_t *icall)
460{
461 ipc_call_t call;
462 size_t size;
463 size_t act_size;
464 errno_t rc;
465
466 log_msg(LOG_DEFAULT, LVL_DEBUG, "vol_get_volumes_srv()");
467
468 if (!async_data_read_receive(&call, &size)) {
469 async_answer_0(&call, EREFUSED);
470 async_answer_0(icall, EREFUSED);
471 return;
472 }
473
474 volume_id_t *id_buf = (volume_id_t *) malloc(size);
475 if (id_buf == NULL) {
476 async_answer_0(&call, ENOMEM);
477 async_answer_0(icall, ENOMEM);
478 return;
479 }
480
481 rc = vol_get_ids(parts->volumes, id_buf, size, &act_size);
482 if (rc != EOK) {
483 async_answer_0(&call, rc);
484 async_answer_0(icall, rc);
485 return;
486 }
487
488 errno_t retval = async_data_read_finalize(&call, id_buf, size);
489 free(id_buf);
490
491 async_answer_1(icall, retval, act_size);
492}
493
494static void vol_info_srv(vol_parts_t *parts, ipc_call_t *icall)
495{
496 volume_id_t vid;
497 vol_volume_t *volume;
498 vol_info_t vinfo;
499 errno_t rc;
500
501 vid.id = ipc_get_arg1(icall);
502 log_msg(LOG_DEFAULT, LVL_DEBUG, "vol_info_srv(%zu)", vid.id);
503
504 rc = vol_volume_find_by_id_ref(parts->volumes, vid, &volume);
505 if (rc != EOK) {
506 log_msg(LOG_DEFAULT, LVL_DEBUG, "vol_info_srv: volume %zu not found",
507 vid.id);
508 async_answer_0(icall, ENOENT);
509 return;
510 }
511
512 log_msg(LOG_DEFAULT, LVL_DEBUG, "vol_info_srv: vol_volume_get_info");
513 rc = vol_volume_get_info(volume, &vinfo);
514 if (rc != EOK) {
515 async_answer_0(icall, EIO);
516 goto error;
517 }
518
519 ipc_call_t call;
520 size_t size;
521 if (!async_data_read_receive(&call, &size)) {
522 async_answer_0(&call, EREFUSED);
523 async_answer_0(icall, EREFUSED);
524 goto error;
525 }
526
527 if (size != sizeof(vol_info_t)) {
528 async_answer_0(&call, EINVAL);
529 async_answer_0(icall, EINVAL);
530 goto error;
531 }
532
533 rc = async_data_read_finalize(&call, &vinfo,
534 min(size, sizeof(vinfo)));
535 if (rc != EOK) {
536 async_answer_0(&call, rc);
537 async_answer_0(icall, rc);
538 goto error;
539 }
540
541 async_answer_0(icall, EOK);
542error:
543 vol_volume_del_ref(volume);
544}
545
546static void vol_client_conn(ipc_call_t *icall, void *arg)
547{
548 vol_parts_t *parts = (vol_parts_t *) arg;
549
550 log_msg(LOG_DEFAULT, LVL_DEBUG, "vol_client_conn()");
551
552 /* Accept the connection */
553 async_accept_0(icall);
554
555 while (true) {
556 ipc_call_t call;
557 async_get_call(&call);
558 sysarg_t method = ipc_get_imethod(&call);
559
560 if (!method) {
561 /* The other side has hung up */
562 async_answer_0(&call, EOK);
563 return;
564 }
565
566 switch (method) {
567 case VOL_GET_PARTS:
568 vol_get_parts_srv(parts, &call);
569 break;
570 case VOL_PART_ADD:
571 vol_part_add_srv(parts, &call);
572 break;
573 case VOL_PART_INFO:
574 vol_part_info_srv(parts, &call);
575 break;
576 case VOL_PART_EJECT:
577 vol_part_eject_srv(parts, &call);
578 break;
579 case VOL_PART_EMPTY:
580 vol_part_empty_srv(parts, &call);
581 break;
582 case VOL_PART_INSERT:
583 vol_part_insert_srv(parts, &call);
584 break;
585 case VOL_PART_INSERT_BY_PATH:
586 vol_part_insert_by_path_srv(parts, &call);
587 break;
588 case VOL_PART_LSUPP:
589 vol_part_get_lsupp_srv(parts, &call);
590 break;
591 case VOL_PART_MKFS:
592 vol_part_mkfs_srv(parts, &call);
593 break;
594 case VOL_PART_SET_MOUNTP:
595 vol_part_set_mountp_srv(parts, &call);
596 break;
597 case VOL_GET_VOLUMES:
598 vol_get_volumes_srv(parts, &call);
599 break;
600 case VOL_INFO:
601 vol_info_srv(parts, &call);
602 break;
603 default:
604 async_answer_0(&call, EINVAL);
605 }
606 }
607}
608
609int main(int argc, char *argv[])
610{
611 errno_t rc;
612
613 printf("%s: Volume service\n", NAME);
614
615 if (log_init(NAME) != EOK) {
616 printf(NAME ": Failed to initialize logging.\n");
617 return 1;
618 }
619
620 rc = vol_init();
621 if (rc != EOK)
622 return 1;
623
624 printf(NAME ": Accepting connections.\n");
625 task_retval(0);
626 async_manager();
627
628 return 0;
629}
630
631/** @}
632 */
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