source: mainline/uspace/srv/volsrv/volsrv.c@ 1dcba91

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 1dcba91 was 1dcba91, checked in by Jiri Svoboda <jiri@…>, 7 years ago

Configuration repository for volume server.
  • Property mode set to 100644
File size: 9.8 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 = "/data/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 goto error;
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_empty_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_empty_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_empty_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_get_lsupp_srv(vol_parts_t *parts, ipc_call_t *icall)
253{
254 vol_fstype_t fstype;
255 vol_label_supp_t vlsupp;
256 errno_t rc;
257
258 fstype = IPC_GET_ARG1(*icall);
259 log_msg(LOG_DEFAULT, LVL_DEBUG, "vol_part_get_lsupp_srv(%u)",
260 fstype);
261
262 volsrv_part_get_lsupp(fstype, &vlsupp);
263
264 ipc_call_t call;
265 size_t size;
266 if (!async_data_read_receive(&call, &size)) {
267 async_answer_0(&call, EREFUSED);
268 async_answer_0(icall, EREFUSED);
269 return;
270 }
271
272 if (size != sizeof(vol_label_supp_t)) {
273 async_answer_0(&call, EINVAL);
274 async_answer_0(icall, EINVAL);
275 return;
276 }
277
278 rc = async_data_read_finalize(&call, &vlsupp,
279 min(size, sizeof(vlsupp)));
280 if (rc != EOK) {
281 async_answer_0(&call, rc);
282 async_answer_0(icall, rc);
283 return;
284 }
285
286 async_answer_0(icall, EOK);
287}
288
289static void vol_part_mkfs_srv(vol_parts_t *parts, ipc_call_t *icall)
290{
291 service_id_t sid;
292 vol_part_t *part;
293 vol_fstype_t fstype;
294 char *label = NULL;
295 char *mountp = NULL;
296 errno_t rc;
297
298 log_msg(LOG_DEFAULT, LVL_NOTE, "vol_part_mkfs_srv()");
299
300 sid = IPC_GET_ARG1(*icall);
301 fstype = IPC_GET_ARG2(*icall);
302
303 rc = async_data_write_accept((void **)&label, true, 0, VOL_LABEL_MAXLEN,
304 0, NULL);
305 if (rc != EOK) {
306 async_answer_0(icall, rc);
307 goto error;
308 }
309
310 if (label != NULL) {
311 log_msg(LOG_DEFAULT, LVL_NOTE, "vol_part_mkfs_srv: label='%s'",
312 label);
313 }
314
315 rc = async_data_write_accept((void **)&mountp, true, 0, VOL_MOUNTP_MAXLEN,
316 0, NULL);
317 if (rc != EOK) {
318 async_answer_0(icall, rc);
319 goto error;
320 }
321
322 if (mountp != NULL) {
323 log_msg(LOG_DEFAULT, LVL_NOTE, "vol_part_mkfs_srv: mountp='%s'",
324 mountp);
325 }
326
327 rc = vol_part_find_by_id_ref(parts, sid, &part);
328 if (rc != EOK) {
329 async_answer_0(icall, ENOENT);
330 goto error;
331 }
332
333 rc = vol_part_mkfs_part(part, fstype, label, mountp);
334 if (rc != EOK) {
335 async_answer_0(icall, rc);
336 vol_part_del_ref(part);
337 goto error;
338 }
339
340 free(label);
341 free(mountp);
342 async_answer_0(icall, EOK);
343
344 return;
345error:
346 if (label != NULL)
347 free(label);
348 if (mountp != NULL)
349 free(mountp);
350}
351
352static void vol_part_set_mountp_srv(vol_parts_t *parts,
353 ipc_call_t *icall)
354{
355 service_id_t sid;
356 vol_part_t *part;
357 char *mountp;
358 errno_t rc;
359
360 log_msg(LOG_DEFAULT, LVL_NOTE, "vol_part_set_mountp_srv()");
361
362 sid = IPC_GET_ARG1(*icall);
363
364 rc = async_data_write_accept((void **)&mountp, true, 0,
365 VOL_MOUNTP_MAXLEN, 0, NULL);
366 if (rc != EOK) {
367 async_answer_0(icall, rc);
368 return;
369 }
370
371 if (mountp != NULL) {
372 log_msg(LOG_DEFAULT, LVL_NOTE,
373 "vol_part_set_mountp_srv: mountp='%s'", mountp);
374 }
375
376 rc = vol_part_find_by_id_ref(parts, sid, &part);
377 if (rc != EOK) {
378 free(mountp);
379 async_answer_0(icall, ENOENT);
380 return;
381 }
382
383 rc = vol_part_set_mountp_part(part, mountp);
384 if (rc != EOK) {
385 free(mountp);
386 async_answer_0(icall, rc);
387 vol_part_del_ref(part);
388 return;
389 }
390
391 free(mountp);
392 async_answer_0(icall, EOK);
393}
394
395static void vol_client_conn(ipc_call_t *icall, void *arg)
396{
397 vol_parts_t *parts = (vol_parts_t *) arg;
398
399 log_msg(LOG_DEFAULT, LVL_DEBUG, "vol_client_conn()");
400
401 /* Accept the connection */
402 async_answer_0(icall, EOK);
403
404 while (true) {
405 ipc_call_t call;
406 async_get_call(&call);
407 sysarg_t method = IPC_GET_IMETHOD(call);
408
409 if (!method) {
410 /* The other side has hung up */
411 async_answer_0(&call, EOK);
412 return;
413 }
414
415 switch (method) {
416 case VOL_GET_PARTS:
417 vol_get_parts_srv(parts, &call);
418 break;
419 case VOL_PART_ADD:
420 vol_part_add_srv(parts, &call);
421 break;
422 case VOL_PART_INFO:
423 vol_part_info_srv(parts, &call);
424 break;
425 case VOL_PART_EJECT:
426 vol_part_eject_srv(parts, &call);
427 break;
428 case VOL_PART_EMPTY:
429 vol_part_empty_srv(parts, &call);
430 break;
431 case VOL_PART_LSUPP:
432 vol_part_get_lsupp_srv(parts, &call);
433 break;
434 case VOL_PART_MKFS:
435 vol_part_mkfs_srv(parts, &call);
436 break;
437 case VOL_PART_SET_MOUNTP:
438 vol_part_set_mountp_srv(parts, &call);
439 break;
440 default:
441 async_answer_0(&call, EINVAL);
442 }
443 }
444}
445
446int main(int argc, char *argv[])
447{
448 errno_t rc;
449
450 printf("%s: Volume service\n", NAME);
451
452 if (log_init(NAME) != EOK) {
453 printf(NAME ": Failed to initialize logging.\n");
454 return 1;
455 }
456
457 rc = vol_init();
458 if (rc != EOK)
459 return 1;
460
461 printf(NAME ": Accepting connections.\n");
462 task_retval(0);
463 async_manager();
464
465 return 0;
466}
467
468/** @}
469 */
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