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Commit | Line | Data |
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2b002173 | 1 | /* lvm.c - module to read Logical Volumes. */ |
2 | /* | |
3 | * GRUB -- GRand Unified Bootloader | |
58bc8bd5 | 4 | * Copyright (C) 2006,2007,2008,2009 Free Software Foundation, Inc. |
2b002173 | 5 | * |
5a79f472 | 6 | * GRUB is free software: you can redistribute it and/or modify |
2b002173 | 7 | * it under the terms of the GNU General Public License as published by |
5a79f472 | 8 | * the Free Software Foundation, either version 3 of the License, or |
2b002173 | 9 | * (at your option) any later version. |
10 | * | |
5a79f472 | 11 | * GRUB is distributed in the hope that it will be useful, |
2b002173 | 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
5a79f472 | 17 | * along with GRUB. If not, see <http://www.gnu.org/licenses/>. |
2b002173 | 18 | */ |
19 | ||
20 | #include <grub/dl.h> | |
21 | #include <grub/disk.h> | |
22 | #include <grub/mm.h> | |
23 | #include <grub/err.h> | |
24 | #include <grub/misc.h> | |
25 | #include <grub/lvm.h> | |
26 | ||
0973daeb VS |
27 | #ifdef GRUB_UTIL |
28 | #include <grub/util/misc.h> | |
29 | #endif | |
30 | ||
4d42b77f | 31 | static struct grub_lvm_vg *vg_list; |
2b002173 | 32 | static int lv_count; |
33 | ||
34 | \f | |
35 | /* Go the string STR and return the number after STR. *P will point | |
7ceeee39 | 36 | at the number. In case STR is not found, *P will be NULL and the |
37 | return value will be 0. */ | |
2b002173 | 38 | static int |
39 | grub_lvm_getvalue (char **p, char *str) | |
40 | { | |
7ceeee39 | 41 | *p = grub_strstr (*p, str); |
42 | if (! *p) | |
43 | return 0; | |
44 | *p += grub_strlen (str); | |
2b002173 | 45 | return grub_strtoul (*p, NULL, 10); |
46 | } | |
47 | ||
48 | static int | |
49 | grub_lvm_iterate (int (*hook) (const char *name)) | |
50 | { | |
51 | struct grub_lvm_vg *vg; | |
4d42b77f | 52 | for (vg = vg_list; vg; vg = vg->next) |
2b002173 | 53 | { |
54 | struct grub_lvm_lv *lv; | |
7ceeee39 | 55 | if (vg->lvs) |
56 | for (lv = vg->lvs; lv; lv = lv->next) | |
57 | if (hook (lv->name)) | |
58 | return 1; | |
2b002173 | 59 | } |
60 | ||
61 | return 0; | |
62 | } | |
63 | ||
b92f0c18 | 64 | #ifdef GRUB_UTIL |
65 | static grub_disk_memberlist_t | |
66 | grub_lvm_memberlist (grub_disk_t disk) | |
67 | { | |
68 | struct grub_lvm_lv *lv = disk->data; | |
69 | grub_disk_memberlist_t list = NULL, tmp; | |
70 | struct grub_lvm_pv *pv; | |
71 | ||
7ceeee39 | 72 | if (lv->vg->pvs) |
73 | for (pv = lv->vg->pvs; pv; pv = pv->next) | |
74 | { | |
0973daeb VS |
75 | if (!pv->disk) |
76 | grub_util_error ("Couldn't find PV %s. Check your device.map", | |
77 | pv->name); | |
7ceeee39 | 78 | tmp = grub_malloc (sizeof (*tmp)); |
79 | tmp->disk = pv->disk; | |
80 | tmp->next = list; | |
81 | list = tmp; | |
82 | } | |
b92f0c18 | 83 | |
84 | return list; | |
85 | } | |
86 | #endif | |
87 | ||
2b002173 | 88 | static grub_err_t |
89 | grub_lvm_open (const char *name, grub_disk_t disk) | |
90 | { | |
91 | struct grub_lvm_vg *vg; | |
92 | struct grub_lvm_lv *lv = NULL; | |
4d42b77f | 93 | for (vg = vg_list; vg; vg = vg->next) |
2b002173 | 94 | { |
7ceeee39 | 95 | if (vg->lvs) |
96 | for (lv = vg->lvs; lv; lv = lv->next) | |
97 | if (! grub_strcmp (lv->name, name)) | |
98 | break; | |
2b002173 | 99 | |
100 | if (lv) | |
101 | break; | |
102 | } | |
103 | ||
104 | if (! lv) | |
7fd0baee | 105 | return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "unknown LVM device %s", name); |
2b002173 | 106 | |
107 | disk->has_partitions = 0; | |
108 | disk->id = lv->number; | |
109 | disk->data = lv; | |
110 | disk->total_sectors = lv->size; | |
b39f9d20 | 111 | |
2b002173 | 112 | return 0; |
113 | } | |
114 | ||
115 | static void | |
116 | grub_lvm_close (grub_disk_t disk __attribute ((unused))) | |
117 | { | |
118 | return; | |
119 | } | |
120 | ||
121 | static grub_err_t | |
122 | grub_lvm_read (grub_disk_t disk, grub_disk_addr_t sector, | |
123 | grub_size_t size, char *buf) | |
124 | { | |
125 | grub_err_t err = 0; | |
126 | struct grub_lvm_lv *lv = disk->data; | |
127 | struct grub_lvm_vg *vg = lv->vg; | |
128 | struct grub_lvm_segment *seg = lv->segments; | |
129 | struct grub_lvm_pv *pv; | |
130 | grub_uint64_t offset; | |
131 | grub_uint64_t extent; | |
132 | unsigned int i; | |
133 | ||
134 | extent = grub_divmod64 (sector, vg->extent_size, NULL); | |
135 | ||
136 | /* Find the right segment. */ | |
137 | for (i = 0; i < lv->segment_count; i++) | |
138 | { | |
139 | if ((seg->start_extent <= extent) | |
140 | && ((seg->start_extent + seg->extent_count) > extent)) | |
141 | { | |
142 | break; | |
143 | } | |
144 | ||
145 | seg++; | |
146 | } | |
147 | ||
148 | if (seg->stripe_count == 1) | |
149 | { | |
150 | /* This segment is linear, so that's easy. We just need to find | |
151 | out the offset in the physical volume and read SIZE bytes | |
152 | from that. */ | |
153 | struct grub_lvm_stripe *stripe = seg->stripes; | |
154 | grub_uint64_t seg_offset; /* Offset of the segment in PV device. */ | |
155 | ||
156 | pv = stripe->pv; | |
157 | seg_offset = ((grub_uint64_t) stripe->start | |
158 | * (grub_uint64_t) vg->extent_size) + pv->start; | |
159 | ||
160 | offset = sector - ((grub_uint64_t) seg->start_extent | |
161 | * (grub_uint64_t) vg->extent_size) + seg_offset; | |
162 | } | |
163 | else | |
164 | { | |
165 | /* This is a striped segment. We have to find the right PV | |
166 | similar to RAID0. */ | |
167 | struct grub_lvm_stripe *stripe = seg->stripes; | |
168 | grub_uint32_t a, b; | |
169 | grub_uint64_t seg_offset; /* Offset of the segment in PV device. */ | |
170 | unsigned int stripenr; | |
171 | ||
172 | offset = sector - ((grub_uint64_t) seg->start_extent | |
173 | * (grub_uint64_t) vg->extent_size); | |
174 | ||
175 | a = grub_divmod64 (offset, seg->stripe_size, NULL); | |
176 | grub_divmod64 (a, seg->stripe_count, &stripenr); | |
177 | ||
178 | a = grub_divmod64 (offset, seg->stripe_size * seg->stripe_count, NULL); | |
179 | grub_divmod64 (offset, seg->stripe_size, &b); | |
180 | offset = a * seg->stripe_size + b; | |
181 | ||
182 | stripe += stripenr; | |
183 | pv = stripe->pv; | |
b39f9d20 | 184 | |
2b002173 | 185 | seg_offset = ((grub_uint64_t) stripe->start |
186 | * (grub_uint64_t) vg->extent_size) + pv->start; | |
187 | ||
188 | offset += seg_offset; | |
189 | } | |
190 | ||
191 | /* Check whether we actually know the physical volume we want to | |
192 | read from. */ | |
193 | if (pv->disk) | |
194 | err = grub_disk_read (pv->disk, offset, 0, | |
195 | size << GRUB_DISK_SECTOR_BITS, buf); | |
196 | else | |
197 | err = grub_error (GRUB_ERR_UNKNOWN_DEVICE, | |
7fd0baee | 198 | "physical volume %s not found", pv->name); |
b39f9d20 | 199 | |
2b002173 | 200 | return err; |
201 | } | |
202 | ||
203 | static grub_err_t | |
204 | grub_lvm_write (grub_disk_t disk __attribute ((unused)), | |
205 | grub_disk_addr_t sector __attribute ((unused)), | |
206 | grub_size_t size __attribute ((unused)), | |
207 | const char *buf __attribute ((unused))) | |
208 | { | |
209 | return GRUB_ERR_NOT_IMPLEMENTED_YET; | |
210 | } | |
211 | ||
212 | static int | |
213 | grub_lvm_scan_device (const char *name) | |
214 | { | |
215 | grub_err_t err; | |
216 | grub_disk_t disk; | |
217 | grub_uint64_t da_offset, da_size, mda_offset, mda_size; | |
218 | char buf[GRUB_LVM_LABEL_SIZE]; | |
219 | char vg_id[GRUB_LVM_ID_STRLEN+1]; | |
220 | char pv_id[GRUB_LVM_ID_STRLEN+1]; | |
221 | char *metadatabuf, *p, *q, *vgname; | |
222 | struct grub_lvm_label_header *lh = (struct grub_lvm_label_header *) buf; | |
223 | struct grub_lvm_pv_header *pvh; | |
224 | struct grub_lvm_disk_locn *dlocn; | |
225 | struct grub_lvm_mda_header *mdah; | |
226 | struct grub_lvm_raw_locn *rlocn; | |
227 | unsigned int i, j, vgname_len; | |
228 | struct grub_lvm_vg *vg; | |
229 | struct grub_lvm_pv *pv; | |
b39f9d20 | 230 | |
2b002173 | 231 | disk = grub_disk_open (name); |
232 | if (!disk) | |
233 | return 0; | |
234 | ||
235 | /* Search for label. */ | |
236 | for (i = 0; i < GRUB_LVM_LABEL_SCAN_SECTORS; i++) | |
237 | { | |
238 | err = grub_disk_read (disk, i, 0, sizeof(buf), buf); | |
239 | if (err) | |
240 | goto fail; | |
b39f9d20 | 241 | |
2b002173 | 242 | if ((! grub_strncmp ((char *)lh->id, GRUB_LVM_LABEL_ID, |
243 | sizeof (lh->id))) | |
244 | && (! grub_strncmp ((char *)lh->type, GRUB_LVM_LVM2_LABEL, | |
245 | sizeof (lh->type)))) | |
246 | break; | |
247 | } | |
248 | ||
249 | /* Return if we didn't find a label. */ | |
250 | if (i == GRUB_LVM_LABEL_SCAN_SECTORS) | |
251 | goto fail; | |
b39f9d20 | 252 | |
2b002173 | 253 | pvh = (struct grub_lvm_pv_header *) (buf + grub_le_to_cpu32(lh->offset_xl)); |
254 | ||
255 | for (i = 0, j = 0; i < GRUB_LVM_ID_LEN; i++) | |
256 | { | |
257 | pv_id[j++] = pvh->pv_uuid[i]; | |
258 | if ((i != 1) && (i != 29) && (i % 4 == 1)) | |
259 | pv_id[j++] = '-'; | |
260 | } | |
261 | pv_id[j] = '\0'; | |
262 | ||
263 | dlocn = pvh->disk_areas_xl; | |
264 | da_offset = grub_le_to_cpu64 (dlocn->offset); | |
265 | da_size = grub_le_to_cpu64 (dlocn->size); | |
266 | ||
267 | dlocn++; | |
268 | /* Is it possible to have multiple data/metadata areas? I haven't | |
269 | seen devices that have it. */ | |
270 | if (dlocn->offset) | |
271 | { | |
272 | grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET, | |
7fd0baee | 273 | "we don't support multiple LVM data areas"); |
b39f9d20 | 274 | |
2b002173 | 275 | goto fail; |
276 | } | |
277 | ||
278 | dlocn++; | |
279 | mda_offset = grub_le_to_cpu64 (dlocn->offset); | |
280 | mda_size = grub_le_to_cpu64 (dlocn->size); | |
b39f9d20 | 281 | |
f45d6cfc | 282 | /* It's possible to have multiple copies of metadata areas, we just use the |
283 | first one. */ | |
2b002173 | 284 | |
1b7748eb | 285 | /* Allocate buffer space for the circular worst-case scenario. */ |
286 | metadatabuf = grub_malloc (2 * mda_size); | |
2b002173 | 287 | if (! metadatabuf) |
288 | goto fail; | |
289 | ||
290 | err = grub_disk_read (disk, 0, mda_offset, mda_size, metadatabuf); | |
291 | if (err) | |
292 | goto fail2; | |
293 | ||
294 | mdah = (struct grub_lvm_mda_header *) metadatabuf; | |
295 | if ((grub_strncmp ((char *)mdah->magic, GRUB_LVM_FMTT_MAGIC, | |
296 | sizeof (mdah->magic))) | |
297 | || (grub_le_to_cpu32 (mdah->version) != GRUB_LVM_FMTT_VERSION)) | |
298 | { | |
299 | grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET, | |
7fd0baee | 300 | "unknown LVM metadata header"); |
2b002173 | 301 | goto fail2; |
302 | } | |
303 | ||
304 | rlocn = mdah->raw_locns; | |
1b7748eb | 305 | if (grub_le_to_cpu64 (rlocn->offset) + grub_le_to_cpu64 (rlocn->size) > |
306 | grub_le_to_cpu64 (mdah->size)) | |
307 | { | |
308 | /* Metadata is circular. Copy the wrap in place. */ | |
309 | grub_memcpy (metadatabuf + mda_size, | |
310 | metadatabuf + GRUB_LVM_MDA_HEADER_SIZE, | |
311 | grub_le_to_cpu64 (rlocn->offset) + | |
312 | grub_le_to_cpu64 (rlocn->size) - | |
313 | grub_le_to_cpu64 (mdah->size)); | |
314 | } | |
2b002173 | 315 | p = q = metadatabuf + grub_le_to_cpu64 (rlocn->offset); |
316 | ||
d1dff95d | 317 | while (*q != ' ' && q < metadatabuf + mda_size) |
2b002173 | 318 | q++; |
319 | ||
d1dff95d | 320 | if (q == metadatabuf + mda_size) |
321 | goto fail2; | |
322 | ||
2b002173 | 323 | vgname_len = q - p; |
324 | vgname = grub_malloc (vgname_len + 1); | |
325 | if (!vgname) | |
326 | goto fail2; | |
327 | ||
328 | grub_memcpy (vgname, p, vgname_len); | |
329 | vgname[vgname_len] = '\0'; | |
330 | ||
7f8866ed | 331 | p = grub_strstr (q, "id = \""); |
332 | if (p == NULL) | |
333 | goto fail3; | |
334 | p += sizeof ("id = \"") - 1; | |
2b002173 | 335 | grub_memcpy (vg_id, p, GRUB_LVM_ID_STRLEN); |
336 | vg_id[GRUB_LVM_ID_STRLEN] = '\0'; | |
337 | ||
4d42b77f | 338 | for (vg = vg_list; vg; vg = vg->next) |
2b002173 | 339 | { |
340 | if (! grub_memcmp(vg_id, vg->id, GRUB_LVM_ID_STRLEN)) | |
341 | break; | |
342 | } | |
343 | ||
344 | if (! vg) | |
345 | { | |
346 | /* First time we see this volume group. We've to create the | |
347 | whole volume group structure. */ | |
348 | vg = grub_malloc (sizeof (*vg)); | |
349 | if (! vg) | |
7f8866ed | 350 | goto fail3; |
2b002173 | 351 | vg->name = vgname; |
352 | grub_memcpy (vg->id, vg_id, GRUB_LVM_ID_STRLEN+1); | |
353 | ||
354 | vg->extent_size = grub_lvm_getvalue (&p, "extent_size = "); | |
7ceeee39 | 355 | if (p == NULL) |
7f8866ed | 356 | goto fail4; |
2b002173 | 357 | |
358 | vg->lvs = NULL; | |
359 | vg->pvs = NULL; | |
2b002173 | 360 | |
7ceeee39 | 361 | p = grub_strstr (p, "physical_volumes {"); |
362 | if (p) | |
2b002173 | 363 | { |
7ceeee39 | 364 | p += sizeof ("physical_volumes {") - 1; |
b39f9d20 | 365 | |
7ceeee39 | 366 | /* Add all the pvs to the volume group. */ |
367 | while (1) | |
368 | { | |
369 | int s; | |
370 | while (grub_isspace (*p)) | |
371 | p++; | |
b39f9d20 | 372 | |
7ceeee39 | 373 | if (*p == '}') |
374 | break; | |
b39f9d20 | 375 | |
7ceeee39 | 376 | pv = grub_malloc (sizeof (*pv)); |
377 | q = p; | |
378 | while (*q != ' ') | |
379 | q++; | |
b39f9d20 | 380 | |
7ceeee39 | 381 | s = q - p; |
382 | pv->name = grub_malloc (s + 1); | |
383 | grub_memcpy (pv->name, p, s); | |
384 | pv->name[s] = '\0'; | |
b39f9d20 | 385 | |
b7279447 | 386 | p = grub_strstr (p, "id = \""); |
7ceeee39 | 387 | if (p == NULL) |
388 | goto pvs_fail; | |
b7279447 | 389 | p += sizeof("id = \"") - 1; |
b39f9d20 | 390 | |
7ceeee39 | 391 | grub_memcpy (pv->id, p, GRUB_LVM_ID_STRLEN); |
392 | pv->id[GRUB_LVM_ID_STRLEN] = '\0'; | |
b39f9d20 | 393 | |
7ceeee39 | 394 | pv->start = grub_lvm_getvalue (&p, "pe_start = "); |
395 | if (p == NULL) | |
396 | goto pvs_fail; | |
b39f9d20 | 397 | |
b7279447 | 398 | p = grub_strchr (p, '}'); |
399 | if (p == NULL) | |
400 | goto pvs_fail; | |
401 | p++; | |
de4fa71c | 402 | |
403 | pv->disk = NULL; | |
404 | pv->next = vg->pvs; | |
405 | vg->pvs = pv; | |
b39f9d20 | 406 | |
7ceeee39 | 407 | continue; |
408 | pvs_fail: | |
409 | grub_free (pv->name); | |
410 | grub_free (pv); | |
7f8866ed | 411 | goto fail4; |
7ceeee39 | 412 | } |
2b002173 | 413 | } |
414 | ||
415 | p = grub_strstr (p, "logical_volumes"); | |
7ceeee39 | 416 | if (p) |
2b002173 | 417 | { |
7ceeee39 | 418 | p += 18; |
b39f9d20 | 419 | |
7ceeee39 | 420 | /* And add all the lvs to the volume group. */ |
421 | while (1) | |
2b002173 | 422 | { |
7ceeee39 | 423 | int s; |
424 | struct grub_lvm_lv *lv; | |
425 | struct grub_lvm_segment *seg; | |
b39f9d20 | 426 | |
7ceeee39 | 427 | while (grub_isspace (*p)) |
428 | p++; | |
b39f9d20 | 429 | |
7ceeee39 | 430 | if (*p == '}') |
431 | break; | |
b39f9d20 | 432 | |
7ceeee39 | 433 | lv = grub_malloc (sizeof (*lv)); |
b39f9d20 | 434 | |
7ceeee39 | 435 | q = p; |
436 | while (*q != ' ') | |
437 | q++; | |
b39f9d20 | 438 | |
7ceeee39 | 439 | s = q - p; |
440 | lv->name = grub_malloc (vgname_len + 1 + s + 1); | |
441 | grub_memcpy (lv->name, vgname, vgname_len); | |
442 | lv->name[vgname_len] = '-'; | |
443 | grub_memcpy (lv->name + vgname_len + 1, p, s); | |
444 | lv->name[vgname_len + 1 + s] = '\0'; | |
b39f9d20 | 445 | |
7ceeee39 | 446 | lv->size = 0; |
b39f9d20 | 447 | |
7ceeee39 | 448 | lv->segment_count = grub_lvm_getvalue (&p, "segment_count = "); |
449 | if (p == NULL) | |
450 | goto lvs_fail; | |
451 | lv->segments = grub_malloc (sizeof (*seg) * lv->segment_count); | |
452 | seg = lv->segments; | |
b39f9d20 | 453 | |
7ceeee39 | 454 | for (i = 0; i < lv->segment_count; i++) |
2b002173 | 455 | { |
7ceeee39 | 456 | struct grub_lvm_stripe *stripe; |
b39f9d20 | 457 | |
7ceeee39 | 458 | p = grub_strstr (p, "segment"); |
459 | if (p == NULL) | |
460 | goto lvs_segment_fail; | |
b39f9d20 | 461 | |
7ceeee39 | 462 | seg->start_extent = grub_lvm_getvalue (&p, "start_extent = "); |
463 | if (p == NULL) | |
464 | goto lvs_segment_fail; | |
465 | seg->extent_count = grub_lvm_getvalue (&p, "extent_count = "); | |
466 | if (p == NULL) | |
467 | goto lvs_segment_fail; | |
468 | seg->stripe_count = grub_lvm_getvalue (&p, "stripe_count = "); | |
469 | if (p == NULL) | |
470 | goto lvs_segment_fail; | |
b39f9d20 | 471 | |
7ceeee39 | 472 | lv->size += seg->extent_count * vg->extent_size; |
b39f9d20 | 473 | |
7ceeee39 | 474 | if (seg->stripe_count != 1) |
475 | seg->stripe_size = grub_lvm_getvalue (&p, "stripe_size = "); | |
b39f9d20 | 476 | |
7ceeee39 | 477 | seg->stripes = grub_malloc (sizeof (*stripe) |
478 | * seg->stripe_count); | |
479 | stripe = seg->stripes; | |
b39f9d20 | 480 | |
7ceeee39 | 481 | p = grub_strstr (p, "stripes = ["); |
482 | if (p == NULL) | |
483 | goto lvs_segment_fail2; | |
484 | p += sizeof("stripes = [") - 1; | |
b39f9d20 | 485 | |
7ceeee39 | 486 | for (j = 0; j < seg->stripe_count; j++) |
2b002173 | 487 | { |
0a1150e2 | 488 | char *pvname; |
b39f9d20 | 489 | |
7ceeee39 | 490 | p = grub_strchr (p, '"'); |
491 | if (p == NULL) | |
492 | continue; | |
493 | q = ++p; | |
494 | while (*q != '"') | |
495 | q++; | |
496 | ||
497 | s = q - p; | |
b39f9d20 | 498 | |
0a1150e2 | 499 | pvname = grub_malloc (s + 1); |
01979850 | 500 | if (pvname == NULL) |
501 | goto lvs_segment_fail2; | |
b39f9d20 | 502 | |
7ceeee39 | 503 | grub_memcpy (pvname, p, s); |
504 | pvname[s] = '\0'; | |
b39f9d20 | 505 | |
7ceeee39 | 506 | if (vg->pvs) |
507 | for (pv = vg->pvs; pv; pv = pv->next) | |
508 | { | |
509 | if (! grub_strcmp (pvname, pv->name)) | |
510 | { | |
511 | stripe->pv = pv; | |
512 | break; | |
513 | } | |
514 | } | |
b39f9d20 | 515 | |
0a1150e2 | 516 | grub_free(pvname); |
b39f9d20 | 517 | |
7ceeee39 | 518 | stripe->start = grub_lvm_getvalue (&p, ","); |
519 | if (p == NULL) | |
520 | continue; | |
b39f9d20 | 521 | |
7ceeee39 | 522 | stripe++; |
2b002173 | 523 | } |
b39f9d20 | 524 | |
7ceeee39 | 525 | seg++; |
526 | ||
527 | continue; | |
528 | lvs_segment_fail2: | |
529 | grub_free (seg->stripes); | |
530 | lvs_segment_fail: | |
7f8866ed | 531 | goto fail4; |
2b002173 | 532 | } |
533 | ||
af63ada2 | 534 | if (p != NULL) |
535 | p = grub_strchr (p, '}'); | |
7ceeee39 | 536 | if (p == NULL) |
537 | goto lvs_fail; | |
538 | p += 3; | |
b39f9d20 | 539 | |
de4fa71c | 540 | lv->number = lv_count++; |
541 | lv->vg = vg; | |
542 | lv->next = vg->lvs; | |
543 | vg->lvs = lv; | |
544 | ||
7ceeee39 | 545 | continue; |
546 | lvs_fail: | |
547 | grub_free (lv->name); | |
548 | grub_free (lv); | |
7f8866ed | 549 | goto fail4; |
2b002173 | 550 | } |
2b002173 | 551 | } |
de4fa71c | 552 | |
553 | vg->next = vg_list; | |
554 | vg_list = vg; | |
2b002173 | 555 | } |
556 | else | |
557 | { | |
558 | grub_free (vgname); | |
559 | } | |
560 | ||
561 | /* Match the device we are currently reading from with the right | |
562 | PV. */ | |
7ceeee39 | 563 | if (vg->pvs) |
564 | for (pv = vg->pvs; pv; pv = pv->next) | |
565 | { | |
566 | if (! grub_memcmp (pv->id, pv_id, GRUB_LVM_ID_STRLEN)) | |
567 | { | |
f45d6cfc | 568 | /* This could happen to LVM on RAID, pv->disk points to the |
569 | raid device, we shouldn't change it. */ | |
570 | if (! pv->disk) | |
571 | pv->disk = grub_disk_open (name); | |
7ceeee39 | 572 | break; |
573 | } | |
574 | } | |
2b002173 | 575 | |
7f8866ed | 576 | goto fail2; |
577 | ||
578 | /* Failure path. */ | |
579 | fail4: | |
580 | grub_free (vg); | |
581 | fail3: | |
582 | grub_free (vgname); | |
583 | ||
584 | /* Normal exit path. */ | |
2b002173 | 585 | fail2: |
586 | grub_free (metadatabuf); | |
587 | fail: | |
588 | grub_disk_close (disk); | |
589 | return 0; | |
590 | } | |
591 | ||
592 | static struct grub_disk_dev grub_lvm_dev = | |
593 | { | |
594 | .name = "lvm", | |
595 | .id = GRUB_DISK_DEVICE_LVM_ID, | |
596 | .iterate = grub_lvm_iterate, | |
597 | .open = grub_lvm_open, | |
598 | .close = grub_lvm_close, | |
599 | .read = grub_lvm_read, | |
600 | .write = grub_lvm_write, | |
b92f0c18 | 601 | #ifdef GRUB_UTIL |
602 | .memberlist = grub_lvm_memberlist, | |
603 | #endif | |
2b002173 | 604 | .next = 0 |
605 | }; | |
606 | ||
607 | \f | |
608 | GRUB_MOD_INIT(lvm) | |
609 | { | |
610 | grub_device_iterate (&grub_lvm_scan_device); | |
1082b929 | 611 | if (grub_errno) |
612 | { | |
613 | grub_print_error (); | |
614 | grub_errno = GRUB_ERR_NONE; | |
615 | } | |
616 | ||
2b002173 | 617 | grub_disk_dev_register (&grub_lvm_dev); |
618 | } | |
619 | ||
620 | GRUB_MOD_FINI(lvm) | |
621 | { | |
622 | grub_disk_dev_unregister (&grub_lvm_dev); | |
623 | /* FIXME: free the lvm list. */ | |
624 | } |