source: mainline/uspace/srv/bd/hr/hr.c@ 4b759dc

Last change on this file since 4b759dc was c997374, checked in by Miroslav Cimerman <mc@…>, 10 months ago

hr: merge assemble and create functions
  • Property mode set to 100644
File size: 9.3 KB
Line 
1/*
2 * Copyright (c) 2024 Miroslav Cimerman
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 hr
30 * @{
31 */
32/**
33 * @file
34 */
35
36#include <async.h>
37#include <bd_srv.h>
38#include <errno.h>
39#include <hr.h>
40#include <io/log.h>
41#include <inttypes.h>
42#include <ipc/hr.h>
43#include <ipc/services.h>
44#include <loc.h>
45#include <task.h>
46#include <stdio.h>
47#include <stdlib.h>
48#include <str.h>
49#include <str_error.h>
50
51#include "superblock.h"
52#include "util.h"
53#include "var.h"
54
55loc_srv_t *hr_srv;
56fibril_mutex_t big_lock; /* for now */
57
58static fibril_mutex_t hr_volumes_lock;
59static list_t hr_volumes;
60
61static service_id_t ctl_sid;
62
63static hr_volume_t *hr_get_volume(service_id_t svc_id)
64{
65 log_msg(LOG_DEFAULT, LVL_DEBUG, "hr_get_volume(): (%" PRIun ")",
66 svc_id);
67
68 fibril_mutex_lock(&hr_volumes_lock);
69 list_foreach(hr_volumes, lvolumes, hr_volume_t, volume) {
70 if (volume->svc_id == svc_id) {
71 fibril_mutex_unlock(&hr_volumes_lock);
72 return volume;
73 }
74 }
75
76 fibril_mutex_unlock(&hr_volumes_lock);
77 return NULL;
78}
79
80static errno_t hr_remove_volume(service_id_t svc_id)
81{
82 log_msg(LOG_DEFAULT, LVL_DEBUG, "hr_remove_volume(): (%" PRIun ")",
83 svc_id);
84
85 fibril_mutex_lock(&hr_volumes_lock);
86 list_foreach(hr_volumes, lvolumes, hr_volume_t, volume) {
87 if (volume->svc_id == svc_id) {
88 hr_fini_devs(volume);
89 list_remove(&volume->lvolumes);
90 free(volume);
91 fibril_mutex_unlock(&hr_volumes_lock);
92 return EOK;
93 }
94 }
95
96 fibril_mutex_unlock(&hr_volumes_lock);
97 return ENOENT;
98}
99
100static void hr_create_srv(ipc_call_t *icall, bool assemble)
101{
102 log_msg(LOG_DEFAULT, LVL_NOTE, "hr_create_srv()");
103
104 errno_t rc;
105 size_t i, size;
106 hr_config_t *cfg;
107 hr_volume_t *new_volume;
108 ipc_call_t call;
109
110 if (!async_data_write_receive(&call, &size)) {
111 async_answer_0(&call, EREFUSED);
112 async_answer_0(icall, EREFUSED);
113 return;
114 }
115
116 if (size != sizeof(hr_config_t)) {
117 async_answer_0(&call, EINVAL);
118 async_answer_0(icall, EINVAL);
119 return;
120 }
121
122 cfg = calloc(1, sizeof(hr_config_t));
123 if (cfg == NULL) {
124 async_answer_0(&call, ENOMEM);
125 async_answer_0(icall, ENOMEM);
126 return;
127 }
128
129 rc = async_data_write_finalize(&call, cfg, size);
130 if (rc != EOK) {
131 async_answer_0(&call, rc);
132 async_answer_0(icall, rc);
133 return;
134 }
135
136 new_volume = calloc(1, sizeof(hr_volume_t));
137 if (new_volume == NULL) {
138 free(cfg);
139 async_answer_0(icall, ENOMEM);
140 return;
141 }
142
143 str_cpy(new_volume->devname, 32, cfg->devname);
144 for (i = 0; i < cfg->dev_no; i++)
145 new_volume->extents[i].svc_id = cfg->devs[i];
146 new_volume->level = cfg->level;
147 new_volume->dev_no = cfg->dev_no;
148
149 if (assemble) {
150 if (cfg->level != hr_l_empty)
151 log_msg(LOG_DEFAULT, LVL_WARN,
152 "level manually set when assembling, ingoring");
153 new_volume->level = hr_l_empty;
154 }
155
156 rc = hr_init_devs(new_volume);
157 if (rc != EOK) {
158 free(cfg);
159 async_answer_0(icall, rc);
160 return;
161 }
162
163 if (assemble) {
164 /* just bsize needed for reading metadata later */
165 rc = hr_check_devs(new_volume, NULL, &new_volume->bsize);
166 if (rc != EOK)
167 goto error;
168
169 rc = hr_get_vol_from_meta(cfg, new_volume);
170 if (rc != EOK)
171 goto error;
172 }
173
174 switch (new_volume->level) {
175 case hr_l_1:
176 new_volume->hr_ops.create = hr_raid1_create;
177 new_volume->hr_ops.init = hr_raid1_init;
178 break;
179 case hr_l_0:
180 new_volume->hr_ops.create = hr_raid0_create;
181 new_volume->hr_ops.init = hr_raid0_init;
182 break;
183 case hr_l_4:
184 new_volume->hr_ops.create = hr_raid4_create;
185 new_volume->hr_ops.init = hr_raid4_init;
186 break;
187 case hr_l_5:
188 new_volume->hr_ops.create = hr_raid5_create;
189 new_volume->hr_ops.init = hr_raid5_init;
190 break;
191 default:
192 log_msg(LOG_DEFAULT, LVL_ERROR,
193 "level %d not implemented yet", new_volume->level);
194 rc = EINVAL;
195 goto error;
196 }
197
198 if (!assemble) {
199 new_volume->hr_ops.init(new_volume);
200 if (rc != EOK)
201 goto error;
202
203 rc = hr_write_meta_to_vol(new_volume);
204 if (rc != EOK)
205 goto error;
206 }
207
208 rc = new_volume->hr_ops.create(new_volume);
209 if (rc != EOK)
210 goto error;
211
212 fibril_mutex_lock(&hr_volumes_lock);
213 list_append(&new_volume->lvolumes, &hr_volumes);
214 fibril_mutex_unlock(&hr_volumes_lock);
215
216 if (assemble) {
217 log_msg(LOG_DEFAULT, LVL_NOTE,
218 "assembled volume \"%s\" (%" PRIun ")",
219 new_volume->devname, new_volume->svc_id);
220 } else {
221 log_msg(LOG_DEFAULT, LVL_NOTE,
222 "created volume \"%s\" (%" PRIun ")",
223 new_volume->devname, new_volume->svc_id);
224 }
225
226 free(cfg);
227 async_answer_0(icall, rc);
228 return;
229error:
230 free(cfg);
231 hr_fini_devs(new_volume);
232 async_answer_0(icall, rc);
233}
234
235static void hr_stop_srv(ipc_call_t *icall)
236{
237 log_msg(LOG_DEFAULT, LVL_NOTE, "hr_stop_srv()");
238
239 errno_t rc;
240 service_id_t svc_id;
241 hr_volume_t *vol;
242
243 svc_id = ipc_get_arg1(icall);
244
245 vol = hr_get_volume(svc_id);
246 if (vol == NULL) {
247 async_answer_0(icall, ENOENT);
248 return;
249 }
250
251 rc = hr_remove_volume(svc_id);
252 if (rc != EOK) {
253 async_answer_0(icall, rc);
254 return;
255 }
256
257 rc = loc_service_unregister(hr_srv, svc_id);
258
259 async_answer_0(icall, rc);
260}
261
262static void hr_print_status_srv(ipc_call_t *icall)
263{
264 log_msg(LOG_DEFAULT, LVL_NOTE, "hr_status_srv()");
265
266 errno_t rc;
267 size_t vol_cnt = 0;
268 hr_vol_info_t info;
269 ipc_call_t call;
270 size_t size;
271
272 fibril_mutex_lock(&hr_volumes_lock);
273
274 vol_cnt = list_count(&hr_volumes);
275
276 if (!async_data_read_receive(&call, &size)) {
277 rc = EREFUSED;
278 goto error;
279 }
280
281 if (size != sizeof(size_t)) {
282 rc = EINVAL;
283 goto error;
284 }
285
286 rc = async_data_read_finalize(&call, &vol_cnt, size);
287 if (rc != EOK)
288 goto error;
289
290 list_foreach(hr_volumes, lvolumes, hr_volume_t, volume) {
291 memcpy(info.extents, volume->extents,
292 sizeof(hr_extent_t) * HR_MAXDEVS);
293 info.svc_id = volume->svc_id;
294 info.extent_no = volume->dev_no;
295 info.level = volume->level;
296 /* print usable number of blocks */
297 info.nblocks = volume->data_blkno;
298 info.strip_size = volume->strip_size;
299 info.bsize = volume->bsize;
300
301 if (!async_data_read_receive(&call, &size)) {
302 rc = EREFUSED;
303 goto error;
304 }
305
306 if (size != sizeof(hr_vol_info_t)) {
307 rc = EINVAL;
308 goto error;
309 }
310
311 rc = async_data_read_finalize(&call, &info, size);
312 if (rc != EOK)
313 goto error;
314 }
315
316 fibril_mutex_unlock(&hr_volumes_lock);
317 async_answer_0(icall, EOK);
318 return;
319error:
320 fibril_mutex_unlock(&hr_volumes_lock);
321 async_answer_0(&call, rc);
322 async_answer_0(icall, rc);
323}
324
325static void hr_ctl_conn(ipc_call_t *icall, void *arg)
326{
327 log_msg(LOG_DEFAULT, LVL_NOTE, "hr_ctl_conn()");
328
329 async_accept_0(icall);
330
331 while (true) {
332 ipc_call_t call;
333 async_get_call(&call);
334 sysarg_t method = ipc_get_imethod(&call);
335
336 if (!method) {
337 async_answer_0(&call, EOK);
338 return;
339 }
340
341 switch (method) {
342 case HR_CREATE:
343 hr_create_srv(&call, false);
344 break;
345 case HR_ASSEMBLE:
346 hr_create_srv(&call, true);
347 break;
348 case HR_STOP:
349 hr_stop_srv(&call);
350 break;
351 case HR_STATUS:
352 hr_print_status_srv(&call);
353 break;
354 default:
355 async_answer_0(&call, EINVAL);
356 }
357 }
358}
359
360static void hr_client_conn(ipc_call_t *icall, void *arg)
361{
362 log_msg(LOG_DEFAULT, LVL_NOTE, "hr_client_conn()");
363
364 hr_volume_t *vol;
365
366 service_id_t svc_id = ipc_get_arg2(icall);
367
368 if (svc_id == ctl_sid) {
369 hr_ctl_conn(icall, arg);
370 } else {
371 log_msg(LOG_DEFAULT, LVL_NOTE, "bd_conn()");
372 vol = hr_get_volume(svc_id);
373 if (vol == NULL)
374 async_answer_0(icall, EINVAL);
375 bd_conn(icall, &vol->hr_bds);
376 }
377}
378
379int main(int argc, char **argv)
380{
381 errno_t rc;
382
383 printf("%s: HelenRAID server\n", NAME);
384
385 rc = log_init(NAME);
386 if (rc != EOK) {
387 printf("%s: failed to initialize logging\n", NAME);
388 return 1;
389 }
390
391 fibril_mutex_initialize(&big_lock);
392
393 fibril_mutex_initialize(&hr_volumes_lock);
394 list_initialize(&hr_volumes);
395
396 async_set_fallback_port_handler(hr_client_conn, NULL);
397
398 rc = loc_server_register(NAME, &hr_srv);
399 if (rc != EOK) {
400 log_msg(LOG_DEFAULT, LVL_ERROR,
401 "failed registering server: %s", str_error(rc));
402 return EEXIST;
403 }
404
405 rc = loc_service_register(hr_srv, SERVICE_NAME_HR, &ctl_sid);
406 if (rc != EOK) {
407 log_msg(LOG_DEFAULT, LVL_ERROR,
408 "failed registering service: %s", str_error(rc));
409 return EEXIST;
410 }
411
412 printf("%s: accepting connections\n", NAME);
413 task_retval(0);
414 async_manager();
415
416 return 0;
417}
418
419/** @}
420 */
Note: See TracBrowser for help on using the repository browser.