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1 | /* | |
2 | * mdadm - Intel(R) Matrix Storage Manager Support | |
3 | * | |
4 | * Copyright (C) 2002-2007 Intel Corporation | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms and conditions of the GNU General Public License, | |
8 | * version 2, as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope it will be useful, but WITHOUT | |
11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | * more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License along with | |
16 | * this program; if not, write to the Free Software Foundation, Inc., | |
17 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | */ | |
19 | ||
20 | #include "mdadm.h" | |
21 | #include <values.h> | |
22 | #include <scsi/sg.h> | |
23 | #include <ctype.h> | |
24 | ||
25 | /* MPB == Metadata Parameter Block */ | |
26 | #define MPB_SIGNATURE "Intel Raid ISM Cfg Sig. " | |
27 | #define MPB_SIG_LEN (strlen(MPB_SIGNATURE)) | |
28 | #define MPB_VERSION_RAID0 "1.0.00" | |
29 | #define MPB_VERSION_RAID1 "1.1.00" | |
30 | #define MPB_VERSION_RAID5 "1.2.02" | |
31 | #define MAX_SIGNATURE_LENGTH 32 | |
32 | #define MAX_RAID_SERIAL_LEN 16 | |
33 | ||
34 | /* Disk configuration info. */ | |
35 | #define IMSM_MAX_DEVICES 255 | |
36 | struct imsm_disk { | |
37 | __u8 serial[MAX_RAID_SERIAL_LEN];/* 0xD8 - 0xE7 ascii serial number */ | |
38 | __u32 total_blocks; /* 0xE8 - 0xEB total blocks */ | |
39 | __u32 scsi_id; /* 0xEC - 0xEF scsi ID */ | |
40 | __u32 status; /* 0xF0 - 0xF3 */ | |
41 | #define SPARE_DISK 0x01 /* Spare */ | |
42 | #define CONFIGURED_DISK 0x02 /* Member of some RaidDev */ | |
43 | #define FAILED_DISK 0x04 /* Permanent failure */ | |
44 | #define USABLE_DISK 0x08 /* Fully usable unless FAILED_DISK is set */ | |
45 | ||
46 | #define IMSM_DISK_FILLERS 5 | |
47 | __u32 filler[IMSM_DISK_FILLERS]; /* 0xF4 - 0x107 MPB_DISK_FILLERS for future expansion */ | |
48 | }; | |
49 | ||
50 | /* RAID map configuration infos. */ | |
51 | struct imsm_map { | |
52 | __u32 pba_of_lba0; /* start address of partition */ | |
53 | __u32 blocks_per_member;/* blocks per member */ | |
54 | __u32 num_data_stripes; /* number of data stripes */ | |
55 | __u16 blocks_per_strip; | |
56 | __u8 map_state; /* Normal, Uninitialized, Degraded, Failed */ | |
57 | #define IMSM_T_STATE_NORMAL 0 | |
58 | #define IMSM_T_STATE_UNINITIALIZED 1 | |
59 | #define IMSM_T_STATE_DEGRADED 2 /* FIXME: is this correct? */ | |
60 | #define IMSM_T_STATE_FAILED 3 /* FIXME: is this correct? */ | |
61 | __u8 raid_level; | |
62 | #define IMSM_T_RAID0 0 | |
63 | #define IMSM_T_RAID1 1 | |
64 | #define IMSM_T_RAID5 5 /* since metadata version 1.2.02 ? */ | |
65 | __u8 num_members; /* number of member disks */ | |
66 | __u8 reserved[3]; | |
67 | __u32 filler[7]; /* expansion area */ | |
68 | __u32 disk_ord_tbl[1]; /* disk_ord_tbl[num_members], | |
69 | top byte special */ | |
70 | } __attribute__ ((packed)); | |
71 | ||
72 | struct imsm_vol { | |
73 | __u32 reserved[2]; | |
74 | __u8 migr_state; /* Normal or Migrating */ | |
75 | __u8 migr_type; /* Initializing, Rebuilding, ... */ | |
76 | __u8 dirty; | |
77 | __u8 fill[1]; | |
78 | __u32 filler[5]; | |
79 | struct imsm_map map[1]; | |
80 | /* here comes another one if migr_state */ | |
81 | } __attribute__ ((packed)); | |
82 | ||
83 | struct imsm_dev { | |
84 | __u8 volume[MAX_RAID_SERIAL_LEN]; | |
85 | __u32 size_low; | |
86 | __u32 size_high; | |
87 | __u32 status; /* Persistent RaidDev status */ | |
88 | __u32 reserved_blocks; /* Reserved blocks at beginning of volume */ | |
89 | #define IMSM_DEV_FILLERS 12 | |
90 | __u32 filler[IMSM_DEV_FILLERS]; | |
91 | struct imsm_vol vol; | |
92 | } __attribute__ ((packed)); | |
93 | ||
94 | struct imsm_super { | |
95 | __u8 sig[MAX_SIGNATURE_LENGTH]; /* 0x00 - 0x1F */ | |
96 | __u32 check_sum; /* 0x20 - 0x23 MPB Checksum */ | |
97 | __u32 mpb_size; /* 0x24 - 0x27 Size of MPB */ | |
98 | __u32 family_num; /* 0x28 - 0x2B Checksum from first time this config was written */ | |
99 | __u32 generation_num; /* 0x2C - 0x2F Incremented each time this array's MPB is written */ | |
100 | __u32 reserved[2]; /* 0x30 - 0x37 */ | |
101 | __u8 num_disks; /* 0x38 Number of configured disks */ | |
102 | __u8 num_raid_devs; /* 0x39 Number of configured volumes */ | |
103 | __u8 fill[2]; /* 0x3A - 0x3B */ | |
104 | #define IMSM_FILLERS 39 | |
105 | __u32 filler[IMSM_FILLERS]; /* 0x3C - 0xD7 RAID_MPB_FILLERS */ | |
106 | struct imsm_disk disk[1]; /* 0xD8 diskTbl[numDisks] */ | |
107 | /* here comes imsm_dev[num_raid_devs] */ | |
108 | } __attribute__ ((packed)); | |
109 | ||
110 | #ifndef MDASSEMBLE | |
111 | static char *map_state_str[] = { "normal", "uninitialized", "degraded", "failed" }; | |
112 | #endif | |
113 | ||
114 | static unsigned long long mpb_sectors(struct imsm_super *mpb) | |
115 | { | |
116 | __u32 size = __le32_to_cpu(mpb->mpb_size); | |
117 | ||
118 | return ((size + (512-1)) & (~(512-1))) / 512; | |
119 | } | |
120 | ||
121 | /* internal representation of IMSM metadata */ | |
122 | struct intel_super { | |
123 | union { | |
124 | struct imsm_super *mpb; | |
125 | void *buf; | |
126 | }; | |
127 | struct dl { | |
128 | struct dl *next; | |
129 | int index; | |
130 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
131 | int major, minor; | |
132 | char *devname; | |
133 | int fd; | |
134 | } *disks; | |
135 | }; | |
136 | ||
137 | static struct supertype *match_metadata_desc_imsm(char *arg) | |
138 | { | |
139 | struct supertype *st; | |
140 | ||
141 | if (strcmp(arg, "imsm") != 0 && | |
142 | strcmp(arg, "default") != 0 | |
143 | ) | |
144 | return NULL; | |
145 | ||
146 | st = malloc(sizeof(*st)); | |
147 | st->ss = &super_imsm; | |
148 | st->max_devs = IMSM_MAX_DEVICES; | |
149 | st->minor_version = 0; | |
150 | st->sb = NULL; | |
151 | return st; | |
152 | } | |
153 | ||
154 | static struct supertype *match_metadata_desc_imsm_raid(char *arg) | |
155 | { | |
156 | struct supertype *st; | |
157 | ||
158 | if (strcmp(arg, "imsm/raid") != 0 && | |
159 | strcmp(arg, "raid") != 0 && | |
160 | strcmp(arg, "default") != 0 | |
161 | ) | |
162 | return NULL; | |
163 | ||
164 | st = malloc(sizeof(*st)); | |
165 | st->ss = &super_imsm_raid; | |
166 | st->max_devs = IMSM_MAX_DEVICES; | |
167 | st->minor_version = 0; | |
168 | st->sb = NULL; | |
169 | return st; | |
170 | } | |
171 | ||
172 | static __u8 *get_imsm_version(struct imsm_super *mpb) | |
173 | { | |
174 | return &mpb->sig[MPB_SIG_LEN]; | |
175 | } | |
176 | ||
177 | static struct imsm_disk *get_imsm_disk(struct imsm_super *mpb, __u8 index) | |
178 | { | |
179 | if (index > mpb->num_disks - 1) | |
180 | return NULL; | |
181 | return &mpb->disk[index]; | |
182 | } | |
183 | ||
184 | static __u32 gen_imsm_checksum(struct imsm_super *mpb) | |
185 | { | |
186 | __u32 end = mpb->mpb_size / sizeof(end); | |
187 | __u32 *p = (__u32 *) mpb; | |
188 | __u32 sum = 0; | |
189 | ||
190 | while (end--) | |
191 | sum += __le32_to_cpu(*p++); | |
192 | ||
193 | return sum - __le32_to_cpu(mpb->check_sum); | |
194 | } | |
195 | ||
196 | static size_t sizeof_imsm_dev(struct imsm_dev *dev) | |
197 | { | |
198 | size_t size = sizeof(*dev); | |
199 | ||
200 | /* each map has disk_ord_tbl[num_members - 1] additional space */ | |
201 | size += sizeof(__u32) * (dev->vol.map[0].num_members - 1); | |
202 | ||
203 | /* migrating means an additional map */ | |
204 | if (dev->vol.migr_state) { | |
205 | size += sizeof(struct imsm_map); | |
206 | size += sizeof(__u32) * (dev->vol.map[1].num_members - 1); | |
207 | } | |
208 | ||
209 | return size; | |
210 | } | |
211 | ||
212 | static struct imsm_dev *get_imsm_dev(struct imsm_super *mpb, __u8 index) | |
213 | { | |
214 | int offset; | |
215 | int i; | |
216 | void *_mpb = mpb; | |
217 | ||
218 | if (index > mpb->num_raid_devs - 1) | |
219 | return NULL; | |
220 | ||
221 | /* devices start after all disks */ | |
222 | offset = ((void *) &mpb->disk[mpb->num_disks]) - _mpb; | |
223 | ||
224 | for (i = 0; i <= index; i++) | |
225 | if (i == index) | |
226 | return _mpb + offset; | |
227 | else | |
228 | offset += sizeof_imsm_dev(_mpb + offset); | |
229 | ||
230 | return NULL; | |
231 | } | |
232 | ||
233 | static __u32 get_imsm_disk_idx(struct imsm_map *map, int slot) | |
234 | { | |
235 | __u32 *ord_tbl = &map->disk_ord_tbl[slot]; | |
236 | ||
237 | /* top byte is 'special' */ | |
238 | return __le32_to_cpu(*ord_tbl & ~(0xff << 24)); | |
239 | } | |
240 | ||
241 | #ifndef MDASSEMBLE | |
242 | static int get_imsm_raid_level(struct imsm_map *map) | |
243 | { | |
244 | if (map->raid_level == 1) { | |
245 | if (map->num_members == 2) | |
246 | return 1; | |
247 | else | |
248 | return 10; | |
249 | } | |
250 | ||
251 | return map->raid_level; | |
252 | } | |
253 | ||
254 | static void print_imsm_dev(struct imsm_dev *dev, int index) | |
255 | { | |
256 | __u64 sz; | |
257 | int slot; | |
258 | struct imsm_map *map = dev->vol.map; | |
259 | ||
260 | printf("\n"); | |
261 | printf("[%s]:\n", dev->volume); | |
262 | printf(" RAID Level : %d\n", get_imsm_raid_level(map)); | |
263 | printf(" Members : %d\n", map->num_members); | |
264 | for (slot = 0; slot < map->num_members; slot++) | |
265 | if (index == get_imsm_disk_idx(map, slot)) | |
266 | break; | |
267 | if (slot < map->num_members) | |
268 | printf(" This Slot : %d\n", slot); | |
269 | else | |
270 | printf(" This Slot : ?\n"); | |
271 | sz = __le32_to_cpu(dev->size_high); | |
272 | sz <<= 32; | |
273 | sz += __le32_to_cpu(dev->size_low); | |
274 | printf(" Array Size : %llu%s\n", (unsigned long long)sz, | |
275 | human_size(sz * 512)); | |
276 | sz = __le32_to_cpu(map->blocks_per_member); | |
277 | printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz, | |
278 | human_size(sz * 512)); | |
279 | printf(" Sector Offset : %u\n", | |
280 | __le32_to_cpu(map->pba_of_lba0)); | |
281 | printf(" Num Stripes : %u\n", | |
282 | __le32_to_cpu(map->num_data_stripes)); | |
283 | printf(" Chunk Size : %u KiB\n", | |
284 | __le16_to_cpu(map->blocks_per_strip) / 2); | |
285 | printf(" Reserved : %d\n", __le32_to_cpu(dev->reserved_blocks)); | |
286 | printf(" Migrate State : %s\n", dev->vol.migr_state ? "migrating" : "idle"); | |
287 | printf(" Dirty State : %s\n", dev->vol.dirty ? "dirty" : "clean"); | |
288 | printf(" Map State : %s\n", map_state_str[map->map_state]); | |
289 | } | |
290 | ||
291 | static void print_imsm_disk(struct imsm_super *mpb, int index) | |
292 | { | |
293 | struct imsm_disk *disk = get_imsm_disk(mpb, index); | |
294 | char str[MAX_RAID_SERIAL_LEN]; | |
295 | __u32 s; | |
296 | __u64 sz; | |
297 | ||
298 | printf("\n"); | |
299 | snprintf(str, MAX_RAID_SERIAL_LEN, "%s", disk->serial); | |
300 | printf(" Disk%02d Serial : %s\n", index, str); | |
301 | s = __le32_to_cpu(disk->status); | |
302 | printf(" State :%s%s%s%s\n", s&SPARE_DISK ? " spare" : "", | |
303 | s&CONFIGURED_DISK ? " active" : "", | |
304 | s&FAILED_DISK ? " failed" : "", | |
305 | s&USABLE_DISK ? " usable" : ""); | |
306 | printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id)); | |
307 | sz = __le32_to_cpu(disk->total_blocks) - mpb_sectors(mpb); | |
308 | printf(" Usable Size : %llu%s\n", (unsigned long long)sz, | |
309 | human_size(sz * 512)); | |
310 | } | |
311 | ||
312 | static void examine_super_imsm(struct supertype *st, char *homehost) | |
313 | { | |
314 | struct intel_super *super = st->sb; | |
315 | struct imsm_super *mpb = super->mpb; | |
316 | char str[MAX_SIGNATURE_LENGTH]; | |
317 | int i; | |
318 | __u32 sum; | |
319 | ||
320 | snprintf(str, MPB_SIG_LEN, "%s", mpb->sig); | |
321 | printf(" Magic : %s\n", str); | |
322 | snprintf(str, strlen(MPB_VERSION_RAID0), "%s", get_imsm_version(mpb)); | |
323 | printf(" Version : %s\n", get_imsm_version(mpb)); | |
324 | printf(" Family : %08x\n", __le32_to_cpu(mpb->family_num)); | |
325 | printf(" Generation : %08x\n", __le32_to_cpu(mpb->generation_num)); | |
326 | sum = __le32_to_cpu(mpb->check_sum); | |
327 | printf(" Checksum : %08x %s\n", sum, | |
328 | gen_imsm_checksum(mpb) == sum ? "correct" : "incorrect"); | |
329 | printf(" Disks : %d\n", mpb->num_disks); | |
330 | printf(" RAID Devices : %d\n", mpb->num_raid_devs); | |
331 | print_imsm_disk(mpb, super->disks->index); | |
332 | for (i = 0; i < mpb->num_raid_devs; i++) | |
333 | print_imsm_dev(get_imsm_dev(mpb, i), super->disks->index); | |
334 | for (i = 0; i < mpb->num_disks; i++) { | |
335 | if (i == super->disks->index) | |
336 | continue; | |
337 | print_imsm_disk(mpb, i); | |
338 | } | |
339 | } | |
340 | ||
341 | static void brief_examine_super_imsm(struct supertype *st) | |
342 | { | |
343 | struct intel_super *super = st->sb; | |
344 | struct imsm_super *mpb = super->mpb; | |
345 | ||
346 | printf("ARRAY /dev/imsm family=%08x metadata=external:imsm\n", | |
347 | __le32_to_cpu(mpb->family_num)); | |
348 | } | |
349 | ||
350 | static void detail_super_imsm(struct supertype *st, char *homehost) | |
351 | { | |
352 | printf("%s\n", __FUNCTION__); | |
353 | } | |
354 | ||
355 | static void brief_detail_super_imsm(struct supertype *st) | |
356 | { | |
357 | printf("%s\n", __FUNCTION__); | |
358 | } | |
359 | #endif | |
360 | ||
361 | static int match_home_imsm(struct supertype *st, char *homehost) | |
362 | { | |
363 | printf("%s\n", __FUNCTION__); | |
364 | ||
365 | return 0; | |
366 | } | |
367 | ||
368 | static void uuid_from_super_imsm(struct supertype *st, int uuid[4]) | |
369 | { | |
370 | printf("%s\n", __FUNCTION__); | |
371 | } | |
372 | ||
373 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info) | |
374 | { | |
375 | struct intel_super *super = st->sb; | |
376 | struct imsm_super *mpb = super->mpb; | |
377 | struct imsm_disk *disk; | |
378 | __u32 s; | |
379 | __u8 *v = get_imsm_version(mpb); | |
380 | __u8 *end = mpb->sig + MAX_SIGNATURE_LENGTH; | |
381 | char major[] = { 0, 0, 0 }; | |
382 | char minor[] = { 0 ,0, 0 }; | |
383 | char patch[] = { 0, 0, 0 }; | |
384 | char *ver_parse[] = { major, minor, patch }; | |
385 | int i, j; | |
386 | ||
387 | i = j = 0; | |
388 | while (*v != '\0' && v < end) { | |
389 | if (*v != '.' && j < 2) | |
390 | ver_parse[i][j++] = *v; | |
391 | else { | |
392 | i++; | |
393 | j = 0; | |
394 | } | |
395 | v++; | |
396 | } | |
397 | ||
398 | info->array.major_version = 2000; | |
399 | info->array.minor_version = strtol(minor, NULL, 0); | |
400 | info->array.patch_version = strtol(patch, NULL, 0); | |
401 | info->array.raid_disks = mpb->num_disks; | |
402 | info->array.level = LEVEL_CONTAINER; | |
403 | info->array.layout = 0; | |
404 | info->array.md_minor = -1; | |
405 | info->array.ctime = __le32_to_cpu(mpb->generation_num); //?? | |
406 | info->array.utime = 0; | |
407 | info->array.chunk_size = 0; | |
408 | ||
409 | info->disk.major = 0; | |
410 | info->disk.minor = 0; | |
411 | info->disk.number = super->disks->index; | |
412 | info->disk.raid_disk = -1; | |
413 | /* is this disk a member of a raid device? */ | |
414 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
415 | struct imsm_dev *dev = get_imsm_dev(mpb, i); | |
416 | struct imsm_map *map = dev->vol.map; | |
417 | ||
418 | for (j = 0; j < map->num_members; j++) { | |
419 | __u32 index = get_imsm_disk_idx(map, j); | |
420 | ||
421 | if (index == super->disks->index) { | |
422 | info->disk.raid_disk = super->disks->index; | |
423 | break; | |
424 | } | |
425 | } | |
426 | if (info->disk.raid_disk != -1) | |
427 | break; | |
428 | } | |
429 | disk = get_imsm_disk(mpb, super->disks->index); | |
430 | s = __le32_to_cpu(disk->status); | |
431 | info->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0; | |
432 | info->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0; | |
433 | info->disk.state |= s & USABLE_DISK ? (1 << MD_DISK_SYNC) : 0; | |
434 | info->reshape_active = 0; | |
435 | } | |
436 | ||
437 | static void getinfo_super_imsm_raid(struct supertype *st, struct mdinfo *info) | |
438 | { | |
439 | printf("%s\n", __FUNCTION__); | |
440 | } | |
441 | ||
442 | static int update_super_imsm(struct supertype *st, struct mdinfo *info, | |
443 | char *update, char *devname, int verbose, | |
444 | int uuid_set, char *homehost) | |
445 | { | |
446 | return 0; | |
447 | } | |
448 | ||
449 | static __u64 avail_size_imsm(struct supertype *st, __u64 size) | |
450 | { | |
451 | printf("%s\n", __FUNCTION__); | |
452 | ||
453 | return 0; | |
454 | } | |
455 | ||
456 | static int compare_super_imsm(struct supertype *st, struct supertype *tst) | |
457 | { | |
458 | /* | |
459 | * return: | |
460 | * 0 same, or first was empty, and second was copied | |
461 | * 1 second had wrong number | |
462 | * 2 wrong uuid | |
463 | * 3 wrong other info | |
464 | */ | |
465 | struct intel_super *first = st->sb; | |
466 | struct intel_super *sec = tst->sb; | |
467 | ||
468 | if (!first) { | |
469 | st->sb = tst->sb; | |
470 | tst->sb = NULL; | |
471 | return 0; | |
472 | } | |
473 | ||
474 | if (memcmp(first->mpb->sig, sec->mpb->sig, MAX_SIGNATURE_LENGTH) != 0) | |
475 | return 3; | |
476 | if (first->mpb->family_num != sec->mpb->family_num) | |
477 | return 3; | |
478 | if (first->mpb->mpb_size != sec->mpb->mpb_size) | |
479 | return 3; | |
480 | if (first->mpb->check_sum != sec->mpb->check_sum) | |
481 | return 3; | |
482 | ||
483 | return 0; | |
484 | } | |
485 | ||
486 | extern int scsi_get_serial(int fd, void *buf, size_t buf_len); | |
487 | ||
488 | static int imsm_read_serial(int fd, char *devname, | |
489 | __u8 serial[MAX_RAID_SERIAL_LEN]) | |
490 | { | |
491 | unsigned char scsi_serial[255]; | |
492 | struct stat stb; | |
493 | int sg_fd; | |
494 | int minor; | |
495 | char sg_path[20]; | |
496 | int rv; | |
497 | int rsp_len; | |
498 | int i, cnt; | |
499 | ||
500 | memset(scsi_serial, 0, sizeof(scsi_serial)); | |
501 | fstat(fd, &stb); | |
502 | minor = minor(stb.st_rdev); | |
503 | minor /= 16; | |
504 | ||
505 | sprintf(sg_path, "/dev/sg%d", minor); | |
506 | sg_fd = open(sg_path, O_RDONLY); | |
507 | if (sg_fd < 0) { | |
508 | if (devname) | |
509 | fprintf(stderr, | |
510 | Name ": Failed to open %s for %s: %s\n", | |
511 | sg_path, devname, strerror(errno)); | |
512 | return 1; | |
513 | } | |
514 | ||
515 | rv = scsi_get_serial(sg_fd, scsi_serial, sizeof(scsi_serial)); | |
516 | close(sg_fd); | |
517 | ||
518 | if (rv != 0) { | |
519 | if (devname) | |
520 | fprintf(stderr, | |
521 | Name ": Failed to retrieve serial for %s\n", | |
522 | devname); | |
523 | return rv; | |
524 | } | |
525 | ||
526 | rsp_len = scsi_serial[3]; | |
527 | for (i = 0, cnt = 0; i < rsp_len; i++) { | |
528 | if (!isspace(scsi_serial[4 + i])) | |
529 | serial[cnt++] = scsi_serial[4 + i]; | |
530 | if (cnt == MAX_RAID_SERIAL_LEN) | |
531 | break; | |
532 | } | |
533 | ||
534 | serial[MAX_RAID_SERIAL_LEN - 1] = '\0'; | |
535 | ||
536 | return 0; | |
537 | } | |
538 | ||
539 | static int | |
540 | load_imsm_disk(int fd, struct intel_super *super, char *devname, int keep_fd) | |
541 | { | |
542 | struct imsm_super *mpb = super->mpb; | |
543 | struct dl *dl; | |
544 | struct stat stb; | |
545 | struct imsm_disk *disk; | |
546 | int rv; | |
547 | int i; | |
548 | ||
549 | dl = malloc(sizeof(*dl)); | |
550 | if (!dl) { | |
551 | if (devname) | |
552 | fprintf(stderr, | |
553 | Name ": failed to allocate disk buffer for %s\n", | |
554 | devname); | |
555 | return 2; | |
556 | } | |
557 | memset(dl, 0, sizeof(*dl)); | |
558 | ||
559 | fstat(fd, &stb); | |
560 | dl->major = major(stb.st_rdev); | |
561 | dl->minor = minor(stb.st_rdev); | |
562 | dl->next = super->disks; | |
563 | dl->fd = keep_fd ? fd : -1; | |
564 | dl->devname = devname ? strdup(devname) : NULL; | |
565 | dl->index = -1; | |
566 | super->disks = dl; | |
567 | rv = imsm_read_serial(fd, devname, dl->serial); | |
568 | ||
569 | if (rv != 0) | |
570 | return 2; | |
571 | ||
572 | /* look up this disk's index */ | |
573 | for (i = 0; i < mpb->num_disks; i++) { | |
574 | disk = get_imsm_disk(mpb, i); | |
575 | ||
576 | if (memcmp(disk->serial, dl->serial, MAX_RAID_SERIAL_LEN) == 0) | |
577 | break; | |
578 | } | |
579 | ||
580 | if (i > mpb->num_disks) | |
581 | return 2; | |
582 | ||
583 | dl->index = i; | |
584 | ||
585 | return 0; | |
586 | } | |
587 | ||
588 | /* load_imsm_mpb - read matrix metadata | |
589 | * allocates super->mpb to be freed by free_super | |
590 | */ | |
591 | static int load_imsm_mpb(int fd, struct intel_super *super, char *devname) | |
592 | { | |
593 | unsigned long long dsize; | |
594 | size_t len, mpb_size; | |
595 | unsigned long long sectors; | |
596 | struct stat; | |
597 | struct imsm_super anchor; | |
598 | __u32 check_sum; | |
599 | ||
600 | memset(super, 0, sizeof(*super)); | |
601 | get_dev_size(fd, NULL, &dsize); | |
602 | ||
603 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) { | |
604 | if (devname) | |
605 | fprintf(stderr, | |
606 | Name ": Cannot seek to anchor block on %s: %s\n", | |
607 | devname, strerror(errno)); | |
608 | return 1; | |
609 | } | |
610 | ||
611 | len = sizeof(anchor); | |
612 | if (read(fd, &anchor, len) != len) { | |
613 | if (devname) | |
614 | fprintf(stderr, | |
615 | Name ": Cannot read anchor block on %s: %s\n", | |
616 | devname, strerror(errno)); | |
617 | return 1; | |
618 | } | |
619 | ||
620 | if (strncmp((char *) anchor.sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0) { | |
621 | if (devname) | |
622 | fprintf(stderr, | |
623 | Name ": no IMSM anchor on %s\n", devname); | |
624 | return 2; | |
625 | } | |
626 | ||
627 | mpb_size = __le32_to_cpu(anchor.mpb_size); | |
628 | super->mpb = malloc(mpb_size < 512 ? 512 : mpb_size); | |
629 | if (!super->mpb) { | |
630 | if (devname) | |
631 | fprintf(stderr, | |
632 | Name ": unable to allocate %zu byte mpb buffer\n", | |
633 | mpb_size); | |
634 | return 2; | |
635 | } | |
636 | memcpy(super->buf, &anchor, sizeof(anchor)); | |
637 | ||
638 | /* read the rest of the first block */ | |
639 | len = 512 - sizeof(anchor); | |
640 | if (read(fd, super->buf + sizeof(anchor), len) != len) { | |
641 | if (devname) | |
642 | fprintf(stderr, | |
643 | Name ": Cannot read anchor remainder on %s: %s\n", | |
644 | devname, strerror(errno)); | |
645 | return 2; | |
646 | } | |
647 | ||
648 | sectors = mpb_sectors(&anchor) - 1; | |
649 | if (!sectors) | |
650 | return load_imsm_disk(fd, super, devname, 0); | |
651 | ||
652 | /* read the extended mpb */ | |
653 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) { | |
654 | if (devname) | |
655 | fprintf(stderr, | |
656 | Name ": Cannot seek to extended mpb on %s: %s\n", | |
657 | devname, strerror(errno)); | |
658 | return 1; | |
659 | } | |
660 | ||
661 | len = mpb_size - 512; | |
662 | if (read(fd, super->buf + 512, len) != len) { | |
663 | if (devname) | |
664 | fprintf(stderr, | |
665 | Name ": Cannot read extended mpb on %s: %s\n", | |
666 | devname, strerror(errno)); | |
667 | return 2; | |
668 | } | |
669 | ||
670 | check_sum = gen_imsm_checksum(super->mpb); | |
671 | if (check_sum != __le32_to_cpu(super->mpb->check_sum)) { | |
672 | if (devname) | |
673 | fprintf(stderr, | |
674 | Name ": IMSM checksum %x != %x on %s\n", | |
675 | check_sum, __le32_to_cpu(super->mpb->check_sum), | |
676 | devname); | |
677 | return 2; | |
678 | } | |
679 | ||
680 | return load_imsm_disk(fd, super, devname, 0); | |
681 | } | |
682 | ||
683 | struct superswitch super_imsm_container; | |
684 | ||
685 | static void free_imsm_disks(struct intel_super *super) | |
686 | { | |
687 | while (super->disks) { | |
688 | struct dl *d = super->disks; | |
689 | ||
690 | super->disks = d->next; | |
691 | if (d->fd >= 0) | |
692 | close(d->fd); | |
693 | if (d->devname) | |
694 | free(d->devname); | |
695 | free(d); | |
696 | } | |
697 | } | |
698 | ||
699 | static void free_imsm(struct intel_super *super) | |
700 | { | |
701 | if (super->mpb) | |
702 | free(super->mpb); | |
703 | free_imsm_disks(super); | |
704 | free(super); | |
705 | } | |
706 | ||
707 | ||
708 | static void free_super_imsm(struct supertype *st) | |
709 | { | |
710 | struct intel_super *super = st->sb; | |
711 | ||
712 | if (!super) | |
713 | return; | |
714 | ||
715 | free_imsm(super); | |
716 | st->sb = NULL; | |
717 | } | |
718 | ||
719 | #ifndef MDASSEMBLE | |
720 | static int load_super_imsm_all(struct supertype *st, int fd, void **sbp, | |
721 | char *devname, int keep_fd) | |
722 | { | |
723 | struct mdinfo *sra; | |
724 | struct intel_super *super; | |
725 | struct mdinfo *sd, *best = NULL; | |
726 | __u32 bestgen = 0; | |
727 | __u32 gen; | |
728 | char nm[20]; | |
729 | int dfd; | |
730 | int rv; | |
731 | ||
732 | /* check if this disk is a member of an active array */ | |
733 | sra = sysfs_read(fd, 0, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE); | |
734 | if (!sra) | |
735 | return 1; | |
736 | ||
737 | if (sra->array.major_version != -1 || | |
738 | sra->array.minor_version != -2 || | |
739 | strcmp(sra->text_version, "imsm") != 0) | |
740 | return 1; | |
741 | ||
742 | super = malloc(sizeof(*super)); | |
743 | if (!super) | |
744 | return 1; | |
745 | ||
746 | /* find the most up to date disk in this array */ | |
747 | for (sd = sra->devs; sd; sd = sd->next) { | |
748 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
749 | dfd = dev_open(nm, keep_fd ? O_RDWR : O_RDONLY); | |
750 | if (!dfd) { | |
751 | free_imsm(super); | |
752 | return 2; | |
753 | } | |
754 | rv = load_imsm_mpb(dfd, super, NULL); | |
755 | if (!keep_fd) | |
756 | close(dfd); | |
757 | if (rv == 0) { | |
758 | gen = __le32_to_cpu(super->mpb->generation_num); | |
759 | if (!best || gen > bestgen) { | |
760 | bestgen = gen; | |
761 | best = sd; | |
762 | } | |
763 | } else { | |
764 | free_imsm(super); | |
765 | return 2; | |
766 | } | |
767 | } | |
768 | ||
769 | if (!best) { | |
770 | free_imsm(super); | |
771 | return 1; | |
772 | } | |
773 | ||
774 | /* load the most up to date anchor */ | |
775 | sprintf(nm, "%d:%d", best->disk.major, best->disk.minor); | |
776 | dfd = dev_open(nm, O_RDONLY); | |
777 | if (!dfd) { | |
778 | free_imsm(super); | |
779 | return 1; | |
780 | } | |
781 | rv = load_imsm_mpb(dfd, super, NULL); | |
782 | close(dfd); | |
783 | if (rv != 0) { | |
784 | free_imsm(super); | |
785 | return 2; | |
786 | } | |
787 | ||
788 | /* reset the disk list */ | |
789 | free_imsm_disks(super); | |
790 | ||
791 | /* populate disk list */ | |
792 | for (sd = sra->devs ; sd ; sd = sd->next) { | |
793 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
794 | dfd = dev_open(nm, keep_fd? O_RDWR : O_RDONLY); | |
795 | if (!dfd) { | |
796 | free_imsm(super); | |
797 | return 2; | |
798 | } | |
799 | load_imsm_disk(dfd, super, NULL, keep_fd); | |
800 | if (!keep_fd) | |
801 | close(dfd); | |
802 | } | |
803 | ||
804 | *sbp = super; | |
805 | if (st->ss == NULL) { | |
806 | st->ss = &super_imsm_container; | |
807 | st->minor_version = 0; | |
808 | st->max_devs = IMSM_MAX_DEVICES; | |
809 | } | |
810 | ||
811 | return 0; | |
812 | } | |
813 | #endif | |
814 | ||
815 | static int load_super_imsm(struct supertype *st, int fd, char *devname) | |
816 | { | |
817 | struct intel_super *super; | |
818 | int rv; | |
819 | ||
820 | #ifndef MDASSEMBLE | |
821 | if (load_super_imsm_all(st, fd, &st->sb, devname, 0) == 0) | |
822 | return 0; | |
823 | #endif | |
824 | ||
825 | super = malloc(sizeof(*super)); | |
826 | if (!super) { | |
827 | fprintf(stderr, | |
828 | Name ": malloc of %zu failed.\n", | |
829 | sizeof(*super)); | |
830 | return 1; | |
831 | } | |
832 | ||
833 | rv = load_imsm_mpb(fd, super, devname); | |
834 | ||
835 | if (rv) { | |
836 | if (devname) | |
837 | fprintf(stderr, | |
838 | Name ": Failed to load all information " | |
839 | "sections on %s\n", devname); | |
840 | free_imsm(super); | |
841 | return rv; | |
842 | } | |
843 | ||
844 | st->sb = super; | |
845 | if (st->ss == NULL) { | |
846 | st->ss = &super_imsm; | |
847 | st->minor_version = 0; | |
848 | st->max_devs = IMSM_MAX_DEVICES; | |
849 | } | |
850 | ||
851 | return 0; | |
852 | } | |
853 | ||
854 | static int init_zero_imsm(struct supertype *st, mdu_array_info_t *info, | |
855 | unsigned long long size, char *name, | |
856 | char *homehost, int *uuid) | |
857 | { | |
858 | printf("%s\n", __FUNCTION__); | |
859 | ||
860 | return 0; | |
861 | } | |
862 | ||
863 | static int init_super_imsm(struct supertype *st, mdu_array_info_t *info, | |
864 | unsigned long long size, char *name, | |
865 | char *homehost, int *uuid) | |
866 | { | |
867 | printf("%s\n", __FUNCTION__); | |
868 | ||
869 | return 0; | |
870 | } | |
871 | ||
872 | static int init_super_imsm_raid(struct supertype *st, mdu_array_info_t *info, | |
873 | unsigned long long size, char *name, | |
874 | char *homehost, int *uuid) | |
875 | { | |
876 | printf("%s\n", __FUNCTION__); | |
877 | ||
878 | return 0; | |
879 | } | |
880 | ||
881 | static void add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dinfo, | |
882 | int fd, char *devname) | |
883 | { | |
884 | printf("%s\n", __FUNCTION__); | |
885 | } | |
886 | ||
887 | static void add_to_super_imsm_raid(struct supertype *st, mdu_disk_info_t *dinfo, | |
888 | int fd, char *devname) | |
889 | { | |
890 | printf("%s\n", __FUNCTION__); | |
891 | } | |
892 | ||
893 | static int write_init_super_imsm(struct supertype *st) | |
894 | { | |
895 | printf("%s\n", __FUNCTION__); | |
896 | ||
897 | return 0; | |
898 | } | |
899 | ||
900 | static int store_zero_imsm(struct supertype *st, int fd) | |
901 | { | |
902 | printf("%s\n", __FUNCTION__); | |
903 | ||
904 | return 0; | |
905 | } | |
906 | ||
907 | static void getinfo_super_n_container(struct supertype *st, struct mdinfo *info) | |
908 | { | |
909 | printf("%s\n", __FUNCTION__); | |
910 | } | |
911 | ||
912 | static void getinfo_super_n_raid(struct supertype *st, struct mdinfo *info) | |
913 | { | |
914 | printf("%s\n", __FUNCTION__); | |
915 | } | |
916 | ||
917 | static int validate_geometry_imsm(struct supertype *st, int level, int layout, | |
918 | int raiddisks, int chunk, unsigned long long size, | |
919 | char *subdev, unsigned long long *freesize) | |
920 | { | |
921 | printf("%s\n", __FUNCTION__); | |
922 | ||
923 | return 0; | |
924 | } | |
925 | ||
926 | static int validate_geometry_imsm_container(struct supertype *st, int level, | |
927 | int layout, int raiddisks, int chunk, | |
928 | unsigned long long size, char *subdev, | |
929 | unsigned long long *freesize) | |
930 | { | |
931 | printf("%s\n", __FUNCTION__); | |
932 | ||
933 | return 0; | |
934 | } | |
935 | ||
936 | static int validate_geometry_imsm_raid(struct supertype *st, int level, | |
937 | int layout, int raiddisks, int chunk, | |
938 | unsigned long long size, char *subdev, | |
939 | unsigned long long *freesize) | |
940 | { | |
941 | printf("%s\n", __FUNCTION__); | |
942 | ||
943 | return 0; | |
944 | } | |
945 | ||
946 | ||
947 | ||
948 | static struct mdinfo *container_content_imsm(struct supertype *st) | |
949 | { | |
950 | printf("%s\n", __FUNCTION__); | |
951 | ||
952 | return NULL; | |
953 | } | |
954 | ||
955 | struct superswitch super_imsm = { | |
956 | #ifndef MDASSEMBLE | |
957 | .examine_super = examine_super_imsm, | |
958 | .brief_examine_super = brief_examine_super_imsm, | |
959 | .detail_super = detail_super_imsm, | |
960 | .brief_detail_super = brief_detail_super_imsm, | |
961 | #endif | |
962 | .match_home = match_home_imsm, | |
963 | .uuid_from_super= uuid_from_super_imsm, | |
964 | .getinfo_super = getinfo_super_imsm, | |
965 | .update_super = update_super_imsm, | |
966 | ||
967 | .avail_size = avail_size_imsm, | |
968 | ||
969 | .compare_super = compare_super_imsm, | |
970 | ||
971 | .load_super = load_super_imsm, | |
972 | .init_super = init_zero_imsm, | |
973 | .store_super = store_zero_imsm, | |
974 | .free_super = free_super_imsm, | |
975 | .match_metadata_desc = match_metadata_desc_imsm, | |
976 | .getinfo_super_n = getinfo_super_n_container, | |
977 | ||
978 | .validate_geometry = validate_geometry_imsm, | |
979 | .major = 2000, | |
980 | .swapuuid = 0, | |
981 | .external = 1, | |
982 | .text_version = "imsm", | |
983 | }; | |
984 | ||
985 | /* super_imsm_container is set by validate_geometry_imsm when given a | |
986 | * device that is not part of any array | |
987 | */ | |
988 | struct superswitch super_imsm_container = { | |
989 | ||
990 | .validate_geometry = validate_geometry_imsm_container, | |
991 | .init_super = init_super_imsm, | |
992 | .add_to_super = add_to_super_imsm, | |
993 | .write_init_super = write_init_super_imsm, | |
994 | .getinfo_super = getinfo_super_imsm, | |
995 | .getinfo_super_n = getinfo_super_n_container, | |
996 | .load_super = load_super_imsm, | |
997 | ||
998 | #ifndef MDASSEMBLE | |
999 | .examine_super = examine_super_imsm, | |
1000 | .brief_examine_super = brief_examine_super_imsm, | |
1001 | .detail_super = detail_super_imsm, | |
1002 | .brief_detail_super = brief_detail_super_imsm, | |
1003 | #endif | |
1004 | ||
1005 | .free_super = free_super_imsm, | |
1006 | ||
1007 | .container_content = container_content_imsm, | |
1008 | ||
1009 | .major = 2000, | |
1010 | .swapuuid = 0, | |
1011 | .external = 1, | |
1012 | .text_version = "imsm", | |
1013 | }; | |
1014 | ||
1015 | struct superswitch super_imsm_raid = { | |
1016 | .update_super = update_super_imsm, | |
1017 | .init_super = init_super_imsm_raid, | |
1018 | .add_to_super = add_to_super_imsm_raid, | |
1019 | .getinfo_super = getinfo_super_imsm_raid, | |
1020 | .getinfo_super_n = getinfo_super_n_raid, | |
1021 | .write_init_super = write_init_super_imsm, | |
1022 | ||
1023 | .load_super = load_super_imsm, | |
1024 | .free_super = free_super_imsm, | |
1025 | .match_metadata_desc = match_metadata_desc_imsm_raid, | |
1026 | ||
1027 | ||
1028 | .validate_geometry = validate_geometry_imsm_raid, | |
1029 | .major = 2001, | |
1030 | .swapuuid = 0, | |
1031 | .external = 2, | |
1032 | .text_version = "imsm", | |
1033 | }; |