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[thirdparty/mdadm.git] / super-ddf.c
CommitLineData
a322f70c
DW		 1/*
2 * mdadm - manage Linux "md" devices aka RAID arrays.
3 *
e736b623 4 * Copyright (C) 2006-2009 Neil Brown <neilb@suse.de>
a322f70c
DW		 5 *
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 * Author: Neil Brown
22 * Email: <neil@brown.name>
23 *
24 * Specifications for DDF takes from Common RAID DDF Specification Revision 1.2
25 * (July 28 2006). Reused by permission of SNIA.
26 */
27
28#define HAVE_STDINT_H 1
29#include "mdadm.h"
549e9569 30#include "mdmon.h"
a322f70c
DW		 31#include "sha1.h"
32#include <values.h>
33
a322f70c
DW		 34/* a non-official T10 name for creation GUIDs */
35static char T10[] = "Linux-MD";
36
37/* DDF timestamps are 1980 based, so we need to add
38 * second-in-decade-of-seventies to convert to linux timestamps.
39 * 10 years with 2 leap years.
40 */
41#define DECADE (3600*24*(365*10+2))
42unsigned long crc32(
43 unsigned long crc,
44 const unsigned char *buf,
45 unsigned len);
46
47/* The DDF metadata handling.
48 * DDF metadata lives at the end of the device.
49 * The last 512 byte block provides an 'anchor' which is used to locate
50 * the rest of the metadata which usually lives immediately behind the anchor.
51 *
52 * Note:
53 * - all multibyte numeric fields are bigendian.
54 * - all strings are space padded.
55 *
56 */
57
58/* Primary Raid Level (PRL) */
59#define DDF_RAID0 0x00
60#define DDF_RAID1 0x01
61#define DDF_RAID3 0x03
62#define DDF_RAID4 0x04
63#define DDF_RAID5 0x05
64#define DDF_RAID1E 0x11
65#define DDF_JBOD 0x0f
66#define DDF_CONCAT 0x1f
67#define DDF_RAID5E 0x15
68#define DDF_RAID5EE 0x25
59e36268 69#define DDF_RAID6 0x06
a322f70c
DW		 70
71/* Raid Level Qualifier (RLQ) */
72#define DDF_RAID0_SIMPLE 0x00
73#define DDF_RAID1_SIMPLE 0x00 /* just 2 devices in this plex */
74#define DDF_RAID1_MULTI 0x01 /* exactly 3 devices in this plex */
75#define DDF_RAID3_0 0x00 /* parity in first extent */
76#define DDF_RAID3_N 0x01 /* parity in last extent */
77#define DDF_RAID4_0 0x00 /* parity in first extent */
78#define DDF_RAID4_N 0x01 /* parity in last extent */
79/* these apply to raid5e and raid5ee as well */
80#define DDF_RAID5_0_RESTART 0x00 /* same as 'right asymmetric' - layout 1 */
59e36268 81#define DDF_RAID6_0_RESTART 0x01 /* raid6 different from raid5 here!!! */
a322f70c
DW		 82#define DDF_RAID5_N_RESTART 0x02 /* same as 'left asymmetric' - layout 0 */
83#define DDF_RAID5_N_CONTINUE 0x03 /* same as 'left symmetric' - layout 2 */
84
85#define DDF_RAID1E_ADJACENT 0x00 /* raid10 nearcopies==2 */
86#define DDF_RAID1E_OFFSET 0x01 /* raid10 offsetcopies==2 */
87
88/* Secondary RAID Level (SRL) */
89#define DDF_2STRIPED 0x00 /* This is weirder than RAID0 !! */
90#define DDF_2MIRRORED 0x01
91#define DDF_2CONCAT 0x02
92#define DDF_2SPANNED 0x03 /* This is also weird - be careful */
93
94/* Magic numbers */
95#define DDF_HEADER_MAGIC __cpu_to_be32(0xDE11DE11)
96#define DDF_CONTROLLER_MAGIC __cpu_to_be32(0xAD111111)
97#define DDF_PHYS_RECORDS_MAGIC __cpu_to_be32(0x22222222)
98#define DDF_PHYS_DATA_MAGIC __cpu_to_be32(0x33333333)
99#define DDF_VIRT_RECORDS_MAGIC __cpu_to_be32(0xDDDDDDDD)
100#define DDF_VD_CONF_MAGIC __cpu_to_be32(0xEEEEEEEE)
101#define DDF_SPARE_ASSIGN_MAGIC __cpu_to_be32(0x55555555)
102#define DDF_VU_CONF_MAGIC __cpu_to_be32(0x88888888)
103#define DDF_VENDOR_LOG_MAGIC __cpu_to_be32(0x01dBEEF0)
104#define DDF_BBM_LOG_MAGIC __cpu_to_be32(0xABADB10C)
105
106#define DDF_GUID_LEN 24
59e36268
NB		 107#define DDF_REVISION_0 "01.00.00"
108#define DDF_REVISION_2 "01.02.00"
a322f70c
DW		 109
110struct ddf_header {
88c164f4 111 __u32 magic; /* DDF_HEADER_MAGIC */
a322f70c
DW		 112 __u32 crc;
113 char guid[DDF_GUID_LEN];
59e36268 114 char revision[8]; /* 01.02.00 */
a322f70c
DW		 115 __u32 seq; /* starts at '1' */
116 __u32 timestamp;
117 __u8 openflag;
118 __u8 foreignflag;
119 __u8 enforcegroups;
120 __u8 pad0; /* 0xff */
121 __u8 pad1[12]; /* 12 * 0xff */
122 /* 64 bytes so far */
123 __u8 header_ext[32]; /* reserved: fill with 0xff */
124 __u64 primary_lba;
125 __u64 secondary_lba;
126 __u8 type;
127 __u8 pad2[3]; /* 0xff */
128 __u32 workspace_len; /* sectors for vendor space -
129 * at least 32768(sectors) */
130 __u64 workspace_lba;
131 __u16 max_pd_entries; /* one of 15, 63, 255, 1023, 4095 */
132 __u16 max_vd_entries; /* 2^(4,6,8,10,12)-1 : i.e. as above */
133 __u16 max_partitions; /* i.e. max num of configuration
134 record entries per disk */
135 __u16 config_record_len; /* 1 +ROUNDUP(max_primary_element_entries
136 *12/512) */
137 __u16 max_primary_element_entries; /* 16, 64, 256, 1024, or 4096 */
138 __u8 pad3[54]; /* 0xff */
139 /* 192 bytes so far */
140 __u32 controller_section_offset;
141 __u32 controller_section_length;
142 __u32 phys_section_offset;
143 __u32 phys_section_length;
144 __u32 virt_section_offset;
145 __u32 virt_section_length;
146 __u32 config_section_offset;
147 __u32 config_section_length;
148 __u32 data_section_offset;
149 __u32 data_section_length;
150 __u32 bbm_section_offset;
151 __u32 bbm_section_length;
152 __u32 diag_space_offset;
153 __u32 diag_space_length;
154 __u32 vendor_offset;
155 __u32 vendor_length;
156 /* 256 bytes so far */
157 __u8 pad4[256]; /* 0xff */
158};
159
160/* type field */
161#define DDF_HEADER_ANCHOR 0x00
162#define DDF_HEADER_PRIMARY 0x01
163#define DDF_HEADER_SECONDARY 0x02
164
165/* The content of the 'controller section' - global scope */
166struct ddf_controller_data {
88c164f4 167 __u32 magic; /* DDF_CONTROLLER_MAGIC */
a322f70c
DW		 168 __u32 crc;
169 char guid[DDF_GUID_LEN];
170 struct controller_type {
171 __u16 vendor_id;
172 __u16 device_id;
173 __u16 sub_vendor_id;
174 __u16 sub_device_id;
175 } type;
176 char product_id[16];
177 __u8 pad[8]; /* 0xff */
178 __u8 vendor_data[448];
179};
180
181/* The content of phys_section - global scope */
182struct phys_disk {
88c164f4 183 __u32 magic; /* DDF_PHYS_RECORDS_MAGIC */
a322f70c
DW		 184 __u32 crc;
185 __u16 used_pdes;
186 __u16 max_pdes;
187 __u8 pad[52];
188 struct phys_disk_entry {
189 char guid[DDF_GUID_LEN];
190 __u32 refnum;
191 __u16 type;
192 __u16 state;
193 __u64 config_size; /* DDF structures must be after here */
194 char path[18]; /* another horrible structure really */
195 __u8 pad[6];
196 } entries[0];
197};
198
199/* phys_disk_entry.type is a bitmap - bigendian remember */
200#define DDF_Forced_PD_GUID 1
201#define DDF_Active_in_VD 2
88c164f4 202#define DDF_Global_Spare 4 /* VD_CONF records are ignored */
a322f70c
DW		 203#define DDF_Spare 8 /* overrides Global_spare */
204#define DDF_Foreign 16
205#define DDF_Legacy 32 /* no DDF on this device */
206
207#define DDF_Interface_mask 0xf00
208#define DDF_Interface_SCSI 0x100
209#define DDF_Interface_SAS 0x200
210#define DDF_Interface_SATA 0x300
211#define DDF_Interface_FC 0x400
212
213/* phys_disk_entry.state is a bigendian bitmap */
214#define DDF_Online 1
215#define DDF_Failed 2 /* overrides 1,4,8 */
216#define DDF_Rebuilding 4
217#define DDF_Transition 8
218#define DDF_SMART 16
219#define DDF_ReadErrors 32
220#define DDF_Missing 64
221
222/* The content of the virt_section global scope */
223struct virtual_disk {
88c164f4 224 __u32 magic; /* DDF_VIRT_RECORDS_MAGIC */
a322f70c
DW		 225 __u32 crc;
226 __u16 populated_vdes;
227 __u16 max_vdes;
228 __u8 pad[52];
229 struct virtual_entry {
230 char guid[DDF_GUID_LEN];
231 __u16 unit;
232 __u16 pad0; /* 0xffff */
233 __u16 guid_crc;
234 __u16 type;
235 __u8 state;
236 __u8 init_state;
237 __u8 pad1[14];
238 char name[16];
239 } entries[0];
240};
241
242/* virtual_entry.type is a bitmap - bigendian */
243#define DDF_Shared 1
244#define DDF_Enforce_Groups 2
245#define DDF_Unicode 4
246#define DDF_Owner_Valid 8
247
248/* virtual_entry.state is a bigendian bitmap */
249#define DDF_state_mask 0x7
250#define DDF_state_optimal 0x0
251#define DDF_state_degraded 0x1
252#define DDF_state_deleted 0x2
253#define DDF_state_missing 0x3
254#define DDF_state_failed 0x4
7a7cc504 255#define DDF_state_part_optimal 0x5
a322f70c
DW		 256
257#define DDF_state_morphing 0x8
258#define DDF_state_inconsistent 0x10
259
260/* virtual_entry.init_state is a bigendian bitmap */
261#define DDF_initstate_mask 0x03
262#define DDF_init_not 0x00
7a7cc504
NB		 263#define DDF_init_quick 0x01 /* initialisation is progress.
264 * i.e. 'state_inconsistent' */
a322f70c
DW		 265#define DDF_init_full 0x02
266
267#define DDF_access_mask 0xc0
268#define DDF_access_rw 0x00
269#define DDF_access_ro 0x80
270#define DDF_access_blocked 0xc0
271
272/* The content of the config_section - local scope
273 * It has multiple records each config_record_len sectors
274 * They can be vd_config or spare_assign
275 */
276
277struct vd_config {
88c164f4 278 __u32 magic; /* DDF_VD_CONF_MAGIC */
a322f70c
DW		 279 __u32 crc;
280 char guid[DDF_GUID_LEN];
281 __u32 timestamp;
282 __u32 seqnum;
283 __u8 pad0[24];
284 __u16 prim_elmnt_count;
285 __u8 chunk_shift; /* 0 == 512, 1==1024 etc */
286 __u8 prl;
287 __u8 rlq;
288 __u8 sec_elmnt_count;
289 __u8 sec_elmnt_seq;
290 __u8 srl;
598f0d58
NB		 291 __u64 blocks; /* blocks per component could be different
292 * on different component devices...(only
293 * for concat I hope) */
294 __u64 array_blocks; /* blocks in array */
a322f70c
DW		 295 __u8 pad1[8];
296 __u32 spare_refs[8];
297 __u8 cache_pol[8];
298 __u8 bg_rate;
299 __u8 pad2[3];
300 __u8 pad3[52];
301 __u8 pad4[192];
302 __u8 v0[32]; /* reserved- 0xff */
303 __u8 v1[32]; /* reserved- 0xff */
304 __u8 v2[16]; /* reserved- 0xff */
305 __u8 v3[16]; /* reserved- 0xff */
306 __u8 vendor[32];
307 __u32 phys_refnum[0]; /* refnum of each disk in sequence */
308 /*__u64 lba_offset[0]; LBA offset in each phys. Note extents in a
309 bvd are always the same size */
310};
311
312/* vd_config.cache_pol[7] is a bitmap */
313#define DDF_cache_writeback 1 /* else writethrough */
314#define DDF_cache_wadaptive 2 /* only applies if writeback */
315#define DDF_cache_readahead 4
316#define DDF_cache_radaptive 8 /* only if doing read-ahead */
317#define DDF_cache_ifnobatt 16 /* even to write cache if battery is poor */
318#define DDF_cache_wallowed 32 /* enable write caching */
319#define DDF_cache_rallowed 64 /* enable read caching */
320
321struct spare_assign {
88c164f4 322 __u32 magic; /* DDF_SPARE_ASSIGN_MAGIC */
a322f70c
DW		 323 __u32 crc;
324 __u32 timestamp;
325 __u8 reserved[7];
326 __u8 type;
327 __u16 populated; /* SAEs used */
328 __u16 max; /* max SAEs */
329 __u8 pad[8];
330 struct spare_assign_entry {
331 char guid[DDF_GUID_LEN];
332 __u16 secondary_element;
333 __u8 pad[6];
334 } spare_ents[0];
335};
336/* spare_assign.type is a bitmap */
337#define DDF_spare_dedicated 0x1 /* else global */
338#define DDF_spare_revertible 0x2 /* else committable */
339#define DDF_spare_active 0x4 /* else not active */
340#define DDF_spare_affinity 0x8 /* enclosure affinity */
341
342/* The data_section contents - local scope */
343struct disk_data {
88c164f4 344 __u32 magic; /* DDF_PHYS_DATA_MAGIC */
a322f70c
DW		 345 __u32 crc;
346 char guid[DDF_GUID_LEN];
347 __u32 refnum; /* crc of some magic drive data ... */
348 __u8 forced_ref; /* set when above was not result of magic */
349 __u8 forced_guid; /* set if guid was forced rather than magic */
350 __u8 vendor[32];
351 __u8 pad[442];
352};
353
354/* bbm_section content */
355struct bad_block_log {
356 __u32 magic;
357 __u32 crc;
358 __u16 entry_count;
359 __u32 spare_count;
360 __u8 pad[10];
361 __u64 first_spare;
362 struct mapped_block {
363 __u64 defective_start;
364 __u32 replacement_start;
365 __u16 remap_count;
366 __u8 pad[2];
367 } entries[0];
368};
369
370/* Struct for internally holding ddf structures */
371/* The DDF structure stored on each device is potentially
372 * quite different, as some data is global and some is local.
373 * The global data is:
374 * - ddf header
375 * - controller_data
376 * - Physical disk records
377 * - Virtual disk records
378 * The local data is:
379 * - Configuration records
380 * - Physical Disk data section
381 * ( and Bad block and vendor which I don't care about yet).
382 *
383 * The local data is parsed into separate lists as it is read
384 * and reconstructed for writing. This means that we only need
385 * to make config changes once and they are automatically
386 * propagated to all devices.
387 * Note that the ddf_super has space of the conf and disk data
388 * for this disk and also for a list of all such data.
389 * The list is only used for the superblock that is being
390 * built in Create or Assemble to describe the whole array.
391 */
392struct ddf_super {
6416d527 393 struct ddf_header anchor, primary, secondary;
a322f70c 394 struct ddf_controller_data controller;
6416d527 395 struct ddf_header *active;
a322f70c
DW		 396 struct phys_disk *phys;
397 struct virtual_disk *virt;
398 int pdsize, vdsize;
8c3b8c2c 399 int max_part, mppe, conf_rec_len;
d2ca6449 400 int currentdev;
18a2f463 401 int updates_pending;
a322f70c 402 struct vcl {
6416d527
NB		 403 union {
404 char space[512];
405 struct {
406 struct vcl *next;
407 __u64 *lba_offset; /* location in 'conf' of
408 * the lba table */
409 int vcnum; /* index into ->virt */
410 __u64 *block_sizes; /* NULL if all the same */
411 };
412 };
a322f70c 413 struct vd_config conf;
d2ca6449 414 } *conflist, *currentconf;
a322f70c 415 struct dl {
6416d527
NB		 416 union {
417 char space[512];
418 struct {
419 struct dl *next;
420 int major, minor;
421 char *devname;
422 int fd;
423 unsigned long long size; /* sectors */
424 int pdnum; /* index in ->phys */
425 struct spare_assign *spare;
8592f29d
N		 426 void *mdupdate; /* hold metadata update */
427
428 /* These fields used by auto-layout */
429 int raiddisk; /* slot to fill in autolayout */
430 __u64 esize;
6416d527
NB		 431 };
432 };
a322f70c 433 struct disk_data disk;
b2280677 434 struct vcl *vlist[0]; /* max_part in size */
2cc2983d 435 } *dlist, *add_list;
a322f70c
DW		 436};
437
438#ifndef offsetof
439#define offsetof(t,f) ((size_t)&(((t*)0)->f))
440#endif
441
a322f70c
DW		 442
443static int calc_crc(void *buf, int len)
444{
445 /* crcs are always at the same place as in the ddf_header */
446 struct ddf_header *ddf = buf;
447 __u32 oldcrc = ddf->crc;
448 __u32 newcrc;
449 ddf->crc = 0xffffffff;
450
451 newcrc = crc32(0, buf, len);
452 ddf->crc = oldcrc;
4abe6b70
N		 453 /* The crc is store (like everything) bigendian, so convert
454 * here for simplicity
455 */
456 return __cpu_to_be32(newcrc);
a322f70c
DW		 457}
458
459static int load_ddf_header(int fd, unsigned long long lba,
460 unsigned long long size,
461 int type,
462 struct ddf_header *hdr, struct ddf_header *anchor)
463{
464 /* read a ddf header (primary or secondary) from fd/lba
465 * and check that it is consistent with anchor
466 * Need to check:
467 * magic, crc, guid, rev, and LBA's header_type, and
468 * everything after header_type must be the same
469 */
470 if (lba >= size-1)
471 return 0;
472
473 if (lseek64(fd, lba<<9, 0) < 0)
474 return 0;
475
476 if (read(fd, hdr, 512) != 512)
477 return 0;
478
479 if (hdr->magic != DDF_HEADER_MAGIC)
480 return 0;
481 if (calc_crc(hdr, 512) != hdr->crc)
482 return 0;
483 if (memcmp(anchor->guid, hdr->guid, DDF_GUID_LEN) != 0 ||
484 memcmp(anchor->revision, hdr->revision, 8) != 0 ||
485 anchor->primary_lba != hdr->primary_lba ||
486 anchor->secondary_lba != hdr->secondary_lba ||
487 hdr->type != type ||
488 memcmp(anchor->pad2, hdr->pad2, 512 -
489 offsetof(struct ddf_header, pad2)) != 0)
490 return 0;
491
492 /* Looks good enough to me... */
493 return 1;
494}
495
496static void *load_section(int fd, struct ddf_super *super, void *buf,
497 __u32 offset_be, __u32 len_be, int check)
498{
499 unsigned long long offset = __be32_to_cpu(offset_be);
500 unsigned long long len = __be32_to_cpu(len_be);
501 int dofree = (buf == NULL);
502
503 if (check)
504 if (len != 2 && len != 8 && len != 32
505 && len != 128 && len != 512)
506 return NULL;
507
508 if (len > 1024)
509 return NULL;
510 if (buf) {
511 /* All pre-allocated sections are a single block */
512 if (len != 1)
513 return NULL;
3d2c4fc7
DW		 514 } else if (posix_memalign(&buf, 512, len<<9) != 0)
515 buf = NULL;
6416d527 516
a322f70c
DW		 517 if (!buf)
518 return NULL;
519
520 if (super->active->type == 1)
521 offset += __be64_to_cpu(super->active->primary_lba);
522 else
523 offset += __be64_to_cpu(super->active->secondary_lba);
524
525 if (lseek64(fd, offset<<9, 0) != (offset<<9)) {
526 if (dofree)
527 free(buf);
528 return NULL;
529 }
530 if (read(fd, buf, len<<9) != (len<<9)) {
531 if (dofree)
532 free(buf);
533 return NULL;
534 }
535 return buf;
536}
537
538static int load_ddf_headers(int fd, struct ddf_super *super, char *devname)
539{
540 unsigned long long dsize;
541
542 get_dev_size(fd, NULL, &dsize);
543
544 if (lseek64(fd, dsize-512, 0) < 0) {
545 if (devname)
546 fprintf(stderr,
547 Name": Cannot seek to anchor block on %s: %s\n",
548 devname, strerror(errno));
549 return 1;
550 }
551 if (read(fd, &super->anchor, 512) != 512) {
552 if (devname)
553 fprintf(stderr,
554 Name ": Cannot read anchor block on %s: %s\n",
555 devname, strerror(errno));
556 return 1;
557 }
558 if (super->anchor.magic != DDF_HEADER_MAGIC) {
559 if (devname)
560 fprintf(stderr, Name ": no DDF anchor found on %s\n",
561 devname);
562 return 2;
563 }
564 if (calc_crc(&super->anchor, 512) != super->anchor.crc) {
565 if (devname)
566 fprintf(stderr, Name ": bad CRC on anchor on %s\n",
567 devname);
568 return 2;
569 }
59e36268
NB		 570 if (memcmp(super->anchor.revision, DDF_REVISION_0, 8) != 0 &&
571 memcmp(super->anchor.revision, DDF_REVISION_2, 8) != 0) {
a322f70c
DW		 572 if (devname)
573 fprintf(stderr, Name ": can only support super revision"
59e36268
NB		 574 " %.8s and earlier, not %.8s on %s\n",
575 DDF_REVISION_2, super->anchor.revision,devname);
a322f70c
DW		 576 return 2;
577 }
578 if (load_ddf_header(fd, __be64_to_cpu(super->anchor.primary_lba),
579 dsize >> 9, 1,
580 &super->primary, &super->anchor) == 0) {
581 if (devname)
582 fprintf(stderr,
583 Name ": Failed to load primary DDF header "
584 "on %s\n", devname);
585 return 2;
586 }
587 super->active = &super->primary;
588 if (load_ddf_header(fd, __be64_to_cpu(super->anchor.secondary_lba),
589 dsize >> 9, 2,
590 &super->secondary, &super->anchor)) {
591 if ((__be32_to_cpu(super->primary.seq)
592 < __be32_to_cpu(super->secondary.seq) &&
593 !super->secondary.openflag)
594 || (__be32_to_cpu(super->primary.seq)
595 == __be32_to_cpu(super->secondary.seq) &&
596 super->primary.openflag && !super->secondary.openflag)
597 )
598 super->active = &super->secondary;
599 }
600 return 0;
601}
602
603static int load_ddf_global(int fd, struct ddf_super *super, char *devname)
604{
605 void *ok;
606 ok = load_section(fd, super, &super->controller,
607 super->active->controller_section_offset,
608 super->active->controller_section_length,
609 0);
610 super->phys = load_section(fd, super, NULL,
611 super->active->phys_section_offset,
612 super->active->phys_section_length,
613 1);
614 super->pdsize = __be32_to_cpu(super->active->phys_section_length) * 512;
615
616 super->virt = load_section(fd, super, NULL,
617 super->active->virt_section_offset,
618 super->active->virt_section_length,
619 1);
620 super->vdsize = __be32_to_cpu(super->active->virt_section_length) * 512;
621 if (!ok ||
622 !super->phys ||
623 !super->virt) {
624 free(super->phys);
625 free(super->virt);
a2349791
NB		 626 super->phys = NULL;
627 super->virt = NULL;
a322f70c
DW		 628 return 2;
629 }
630 super->conflist = NULL;
631 super->dlist = NULL;
8c3b8c2c
NB		 632
633 super->max_part = __be16_to_cpu(super->active->max_partitions);
634 super->mppe = __be16_to_cpu(super->active->max_primary_element_entries);
635 super->conf_rec_len = __be16_to_cpu(super->active->config_record_len);
a322f70c
DW		 636 return 0;
637}
638
639static int load_ddf_local(int fd, struct ddf_super *super,
640 char *devname, int keep)
641{
642 struct dl *dl;
643 struct stat stb;
644 char *conf;
645 int i;
e223334f 646 int confsec;
b2280677 647 int vnum;
59e36268 648 int max_virt_disks = __be16_to_cpu(super->active->max_vd_entries);
d2ca6449 649 unsigned long long dsize;
a322f70c
DW		 650
651 /* First the local disk info */
3d2c4fc7 652 if (posix_memalign((void**)&dl, 512,
6416d527 653 sizeof(*dl) +
3d2c4fc7
DW		 654 (super->max_part) * sizeof(dl->vlist[0])) != 0) {
655 fprintf(stderr, Name ": %s could not allocate disk info buffer\n",
656 __func__);
657 return 1;
658 }
a322f70c
DW		 659
660 load_section(fd, super, &dl->disk,
661 super->active->data_section_offset,
662 super->active->data_section_length,
663 0);
664 dl->devname = devname ? strdup(devname) : NULL;
598f0d58 665
a322f70c
DW		 666 fstat(fd, &stb);
667 dl->major = major(stb.st_rdev);
668 dl->minor = minor(stb.st_rdev);
669 dl->next = super->dlist;
670 dl->fd = keep ? fd : -1;
d2ca6449
NB		 671
672 dl->size = 0;
673 if (get_dev_size(fd, devname, &dsize))
674 dl->size = dsize >> 9;
b2280677
NB		 675 dl->spare = NULL;
676 for (i=0 ; i < super->max_part ; i++)
a322f70c
DW		 677 dl->vlist[i] = NULL;
678 super->dlist = dl;
59e36268 679 dl->pdnum = -1;
5575e7d9
NB		 680 for (i=0; i < __be16_to_cpu(super->active->max_pd_entries); i++)
681 if (memcmp(super->phys->entries[i].guid,
682 dl->disk.guid, DDF_GUID_LEN) == 0)
683 dl->pdnum = i;
684
a322f70c
DW		 685 /* Now the config list. */
686 /* 'conf' is an array of config entries, some of which are
687 * probably invalid. Those which are good need to be copied into
688 * the conflist
689 */
a322f70c
DW		 690
691 conf = load_section(fd, super, NULL,
692 super->active->config_section_offset,
693 super->active->config_section_length,
694 0);
695
b2280677 696 vnum = 0;
e223334f
N		 697 for (confsec = 0;
698 confsec < __be32_to_cpu(super->active->config_section_length);
699 confsec += super->conf_rec_len) {
a322f70c 700 struct vd_config *vd =
e223334f 701 (struct vd_config *)((char*)conf + confsec*512);
a322f70c
DW		 702 struct vcl *vcl;
703
b2280677
NB		 704 if (vd->magic == DDF_SPARE_ASSIGN_MAGIC) {
705 if (dl->spare)
706 continue;
3d2c4fc7
DW		 707 if (posix_memalign((void**)&dl->spare, 512,
708 super->conf_rec_len*512) != 0) {
709 fprintf(stderr, Name
710 ": %s could not allocate spare info buf\n",
711 __func__);
712 return 1;
713 }
714
b2280677
NB		 715 memcpy(dl->spare, vd, super->conf_rec_len*512);
716 continue;
717 }
a322f70c
DW		 718 if (vd->magic != DDF_VD_CONF_MAGIC)
719 continue;
720 for (vcl = super->conflist; vcl; vcl = vcl->next) {
721 if (memcmp(vcl->conf.guid,
722 vd->guid, DDF_GUID_LEN) == 0)
723 break;
724 }
725
726 if (vcl) {
b2280677 727 dl->vlist[vnum++] = vcl;
a322f70c
DW		 728 if (__be32_to_cpu(vd->seqnum) <=
729 __be32_to_cpu(vcl->conf.seqnum))
730 continue;
59e36268 731 } else {
3d2c4fc7 732 if (posix_memalign((void**)&vcl, 512,
6416d527 733 (super->conf_rec_len*512 +
3d2c4fc7
DW		 734 offsetof(struct vcl, conf))) != 0) {
735 fprintf(stderr, Name
736 ": %s could not allocate vcl buf\n",
737 __func__);
738 return 1;
739 }
a322f70c 740 vcl->next = super->conflist;
59e36268 741 vcl->block_sizes = NULL; /* FIXME not for CONCAT */
a322f70c 742 super->conflist = vcl;
b2280677 743 dl->vlist[vnum++] = vcl;
a322f70c 744 }
8c3b8c2c 745 memcpy(&vcl->conf, vd, super->conf_rec_len*512);
a322f70c 746 vcl->lba_offset = (__u64*)
8c3b8c2c 747 &vcl->conf.phys_refnum[super->mppe];
59e36268
NB		 748
749 for (i=0; i < max_virt_disks ; i++)
750 if (memcmp(super->virt->entries[i].guid,
751 vcl->conf.guid, DDF_GUID_LEN)==0)
752 break;
753 if (i < max_virt_disks)
754 vcl->vcnum = i;
a322f70c
DW		 755 }
756 free(conf);
757
758 return 0;
759}
760
761#ifndef MDASSEMBLE
762static int load_super_ddf_all(struct supertype *st, int fd,
763 void **sbp, char *devname, int keep_fd);
764#endif
37424f13
DW		 765
766static void free_super_ddf(struct supertype *st);
767
a322f70c
DW		 768static int load_super_ddf(struct supertype *st, int fd,
769 char *devname)
770{
771 unsigned long long dsize;
772 struct ddf_super *super;
773 int rv;
774
775#ifndef MDASSEMBLE
59e36268 776 /* if 'fd' is a container, load metadata from all the devices */
3dbccbcf 777 if (load_super_ddf_all(st, fd, &st->sb, devname, 1) == 0)
a322f70c
DW		 778 return 0;
779#endif
f7e7067b
NB		 780 if (st->subarray[0])
781 return 1; /* FIXME Is this correct */
a322f70c
DW		 782
783 if (get_dev_size(fd, devname, &dsize) == 0)
784 return 1;
785
786 /* 32M is a lower bound */
787 if (dsize <= 32*1024*1024) {
97320d7c 788 if (devname)
a322f70c
DW		 789 fprintf(stderr,
790 Name ": %s is too small for ddf: "
791 "size is %llu sectors.\n",
792 devname, dsize>>9);
97320d7c 793 return 1;
a322f70c
DW		 794 }
795 if (dsize & 511) {
97320d7c 796 if (devname)
a322f70c
DW		 797 fprintf(stderr,
798 Name ": %s is an odd size for ddf: "
799 "size is %llu bytes.\n",
800 devname, dsize);
97320d7c 801 return 1;
a322f70c
DW		 802 }
803
37424f13
DW		 804 free_super_ddf(st);
805
6416d527 806 if (posix_memalign((void**)&super, 512, sizeof(*super))!= 0) {
a322f70c
DW		 807 fprintf(stderr, Name ": malloc of %zu failed.\n",
808 sizeof(*super));
809 return 1;
810 }
a2349791 811 memset(super, 0, sizeof(*super));
a322f70c
DW		 812
813 rv = load_ddf_headers(fd, super, devname);
814 if (rv) {
815 free(super);
816 return rv;
817 }
818
819 /* Have valid headers and have chosen the best. Let's read in the rest*/
820
821 rv = load_ddf_global(fd, super, devname);
822
823 if (rv) {
824 if (devname)
825 fprintf(stderr,
826 Name ": Failed to load all information "
827 "sections on %s\n", devname);
828 free(super);
829 return rv;
830 }
831
3d2c4fc7
DW		 832 rv = load_ddf_local(fd, super, devname, 0);
833
834 if (rv) {
835 if (devname)
836 fprintf(stderr,
837 Name ": Failed to load all information "
838 "sections on %s\n", devname);
839 free(super);
840 return rv;
841 }
a322f70c 842
af99d9ca
DW		 843 if (st->subarray[0]) {
844 struct vcl *v;
845
846 for (v = super->conflist; v; v = v->next)
847 if (v->vcnum == atoi(st->subarray))
848 super->currentconf = v;
849 if (!super->currentconf) {
850 free(super);
851 return 1;
852 }
853 }
854
a322f70c
DW		 855 /* Should possibly check the sections .... */
856
857 st->sb = super;
858 if (st->ss == NULL) {
859 st->ss = &super_ddf;
860 st->minor_version = 0;
861 st->max_devs = 512;
862 }
352452c3 863 st->loaded_container = 0;
a322f70c
DW		 864 return 0;
865
866}
867
868static void free_super_ddf(struct supertype *st)
869{
870 struct ddf_super *ddf = st->sb;
871 if (ddf == NULL)
872 return;
873 free(ddf->phys);
874 free(ddf->virt);
875 while (ddf->conflist) {
876 struct vcl *v = ddf->conflist;
877 ddf->conflist = v->next;
59e36268
NB		 878 if (v->block_sizes)
879 free(v->block_sizes);
a322f70c
DW		 880 free(v);
881 }
882 while (ddf->dlist) {
883 struct dl *d = ddf->dlist;
884 ddf->dlist = d->next;
885 if (d->fd >= 0)
886 close(d->fd);
b2280677
NB		 887 if (d->spare)
888 free(d->spare);
a322f70c
DW		 889 free(d);
890 }
891 free(ddf);
892 st->sb = NULL;
893}
894
895static struct supertype *match_metadata_desc_ddf(char *arg)
896{
897 /* 'ddf' only support containers */
898 struct supertype *st;
899 if (strcmp(arg, "ddf") != 0 &&
900 strcmp(arg, "default") != 0
901 )
902 return NULL;
903
904 st = malloc(sizeof(*st));
ef609477 905 memset(st, 0, sizeof(*st));
a322f70c
DW		 906 st->ss = &super_ddf;
907 st->max_devs = 512;
908 st->minor_version = 0;
909 st->sb = NULL;
910 return st;
911}
912
a322f70c
DW		 913
914#ifndef MDASSEMBLE
915
916static mapping_t ddf_state[] = {
917 { "Optimal", 0},
918 { "Degraded", 1},
919 { "Deleted", 2},
920 { "Missing", 3},
921 { "Failed", 4},
922 { "Partially Optimal", 5},
923 { "-reserved-", 6},
924 { "-reserved-", 7},
925 { NULL, 0}
926};
927
928static mapping_t ddf_init_state[] = {
929 { "Not Initialised", 0},
930 { "QuickInit in Progress", 1},
931 { "Fully Initialised", 2},
932 { "*UNKNOWN*", 3},
933 { NULL, 0}
934};
935static mapping_t ddf_access[] = {
936 { "Read/Write", 0},
937 { "Reserved", 1},
938 { "Read Only", 2},
939 { "Blocked (no access)", 3},
940 { NULL ,0}
941};
942
943static mapping_t ddf_level[] = {
944 { "RAID0", DDF_RAID0},
945 { "RAID1", DDF_RAID1},
946 { "RAID3", DDF_RAID3},
947 { "RAID4", DDF_RAID4},
948 { "RAID5", DDF_RAID5},
949 { "RAID1E",DDF_RAID1E},
950 { "JBOD", DDF_JBOD},
951 { "CONCAT",DDF_CONCAT},
952 { "RAID5E",DDF_RAID5E},
953 { "RAID5EE",DDF_RAID5EE},
954 { "RAID6", DDF_RAID6},
955 { NULL, 0}
956};
957static mapping_t ddf_sec_level[] = {
958 { "Striped", DDF_2STRIPED},
959 { "Mirrored", DDF_2MIRRORED},
960 { "Concat", DDF_2CONCAT},
961 { "Spanned", DDF_2SPANNED},
962 { NULL, 0}
963};
964#endif
965
966struct num_mapping {
967 int num1, num2;
968};
969static struct num_mapping ddf_level_num[] = {
970 { DDF_RAID0, 0 },
971 { DDF_RAID1, 1 },
972 { DDF_RAID3, LEVEL_UNSUPPORTED },
60f18132
NB		 973 { DDF_RAID4, 4 },
974 { DDF_RAID5, 5 },
a322f70c
DW		 975 { DDF_RAID1E, LEVEL_UNSUPPORTED },
976 { DDF_JBOD, LEVEL_UNSUPPORTED },
977 { DDF_CONCAT, LEVEL_LINEAR },
978 { DDF_RAID5E, LEVEL_UNSUPPORTED },
979 { DDF_RAID5EE, LEVEL_UNSUPPORTED },
980 { DDF_RAID6, 6},
981 { MAXINT, MAXINT }
982};
983
984static int map_num1(struct num_mapping *map, int num)
985{
986 int i;
987 for (i=0 ; map[i].num1 != MAXINT; i++)
988 if (map[i].num1 == num)
989 break;
990 return map[i].num2;
991}
992
42dc2744
N		 993static int all_ff(char *guid)
994{
995 int i;
996 for (i = 0; i < DDF_GUID_LEN; i++)
997 if (guid[i] != (char)0xff)
998 return 0;
999 return 1;
1000}
1001
a322f70c
DW		 1002#ifndef MDASSEMBLE
1003static void print_guid(char *guid, int tstamp)
1004{
1005 /* A GUIDs are part (or all) ASCII and part binary.
1006 * They tend to be space padded.
59e36268
NB		 1007 * We print the GUID in HEX, then in parentheses add
1008 * any initial ASCII sequence, and a possible
1009 * time stamp from bytes 16-19
a322f70c
DW		 1010 */
1011 int l = DDF_GUID_LEN;
1012 int i;
59e36268
NB		 1013
1014 for (i=0 ; i<DDF_GUID_LEN ; i++) {
1015 if ((i&3)==0 && i != 0) printf(":");
1016 printf("%02X", guid[i]&255);
1017 }
1018
cfccea8c 1019 printf("\n (");
a322f70c
DW		 1020 while (l && guid[l-1] == ' ')
1021 l--;
1022 for (i=0 ; i<l ; i++) {
1023 if (guid[i] >= 0x20 && guid[i] < 0x7f)
1024 fputc(guid[i], stdout);
1025 else
59e36268 1026 break;
a322f70c
DW		 1027 }
1028 if (tstamp) {
1029 time_t then = __be32_to_cpu(*(__u32*)(guid+16)) + DECADE;
1030 char tbuf[100];
1031 struct tm *tm;
1032 tm = localtime(&then);
59e36268 1033 strftime(tbuf, 100, " %D %T",tm);
a322f70c
DW		 1034 fputs(tbuf, stdout);
1035 }
59e36268 1036 printf(")");
a322f70c
DW		 1037}
1038
1039static void examine_vd(int n, struct ddf_super *sb, char *guid)
1040{
8c3b8c2c 1041 int crl = sb->conf_rec_len;
a322f70c
DW		 1042 struct vcl *vcl;
1043
1044 for (vcl = sb->conflist ; vcl ; vcl = vcl->next) {
b06e3095 1045 int i;
a322f70c
DW		 1046 struct vd_config *vc = &vcl->conf;
1047
1048 if (calc_crc(vc, crl*512) != vc->crc)
1049 continue;
1050 if (memcmp(vc->guid, guid, DDF_GUID_LEN) != 0)
1051 continue;
1052
1053 /* Ok, we know about this VD, let's give more details */
b06e3095 1054 printf(" Raid Devices[%d] : %d (", n,
a322f70c 1055 __be16_to_cpu(vc->prim_elmnt_count));
b06e3095
N		 1056 for (i=0; i<__be16_to_cpu(vc->prim_elmnt_count); i++) {
1057 int j;
1058 int cnt = __be16_to_cpu(sb->phys->used_pdes);
1059 for (j=0; j<cnt; j++)
1060 if (vc->phys_refnum[i] == sb->phys->entries[j].refnum)
1061 break;
1062 if (i) printf(" ");
1063 if (j < cnt)
1064 printf("%d", j);
1065 else
1066 printf("--");
1067 }
1068 printf(")\n");
1069 if (vc->chunk_shift != 255)
a322f70c
DW		 1070 printf(" Chunk Size[%d] : %d sectors\n", n,
1071 1 << vc->chunk_shift);
1072 printf(" Raid Level[%d] : %s\n", n,
1073 map_num(ddf_level, vc->prl)?:"-unknown-");
1074 if (vc->sec_elmnt_count != 1) {
1075 printf(" Secondary Position[%d] : %d of %d\n", n,
1076 vc->sec_elmnt_seq, vc->sec_elmnt_count);
1077 printf(" Secondary Level[%d] : %s\n", n,
1078 map_num(ddf_sec_level, vc->srl) ?: "-unknown-");
1079 }
1080 printf(" Device Size[%d] : %llu\n", n,
c9b6907b 1081 (unsigned long long)__be64_to_cpu(vc->blocks)/2);
a322f70c 1082 printf(" Array Size[%d] : %llu\n", n,
c9b6907b 1083 (unsigned long long)__be64_to_cpu(vc->array_blocks)/2);
a322f70c
DW		 1084 }
1085}
1086
1087static void examine_vds(struct ddf_super *sb)
1088{
1089 int cnt = __be16_to_cpu(sb->virt->populated_vdes);
1090 int i;
1091 printf(" Virtual Disks : %d\n", cnt);
1092
1093 for (i=0; i<cnt; i++) {
1094 struct virtual_entry *ve = &sb->virt->entries[i];
b06e3095 1095 printf("\n");
a322f70c
DW		 1096 printf(" VD GUID[%d] : ", i); print_guid(ve->guid, 1);
1097 printf("\n");
1098 printf(" unit[%d] : %d\n", i, __be16_to_cpu(ve->unit));
1099 printf(" state[%d] : %s, %s%s\n", i,
1100 map_num(ddf_state, ve->state & 7),
1101 (ve->state & 8) ? "Morphing, ": "",
1102 (ve->state & 16)? "Not Consistent" : "Consistent");
1103 printf(" init state[%d] : %s\n", i,
1104 map_num(ddf_init_state, ve->init_state&3));
1105 printf(" access[%d] : %s\n", i,
1106 map_num(ddf_access, (ve->init_state>>6) & 3));
1107 printf(" Name[%d] : %.16s\n", i, ve->name);
1108 examine_vd(i, sb, ve->guid);
1109 }
1110 if (cnt) printf("\n");
1111}
1112
1113static void examine_pds(struct ddf_super *sb)
1114{
1115 int cnt = __be16_to_cpu(sb->phys->used_pdes);
1116 int i;
1117 struct dl *dl;
1118 printf(" Physical Disks : %d\n", cnt);
962371a5 1119 printf(" Number RefNo Size Device Type/State\n");
a322f70c
DW		 1120
1121 for (i=0 ; i<cnt ; i++) {
1122 struct phys_disk_entry *pd = &sb->phys->entries[i];
1123 int type = __be16_to_cpu(pd->type);
1124 int state = __be16_to_cpu(pd->state);
1125
b06e3095
N		 1126 //printf(" PD GUID[%d] : ", i); print_guid(pd->guid, 0);
1127 //printf("\n");
1128 printf(" %3d %08x ", i,
a322f70c 1129 __be32_to_cpu(pd->refnum));
c9b6907b
DL		 1130 printf("%8lluK ",
1131 (unsigned long long)__be64_to_cpu(pd->config_size)>>1);
b06e3095
N		 1132 for (dl = sb->dlist; dl ; dl = dl->next) {
1133 if (dl->disk.refnum == pd->refnum) {
1134 char *dv = map_dev(dl->major, dl->minor, 0);
1135 if (dv) {
962371a5 1136 printf("%-15s", dv);
b06e3095
N		 1137 break;
1138 }
1139 }
1140 }
1141 if (!dl)
962371a5 1142 printf("%15s","");
b06e3095 1143 printf(" %s%s%s%s%s",
a322f70c 1144 (type&2) ? "active":"",
b06e3095 1145 (type&4) ? "Global-Spare":"",
a322f70c
DW		 1146 (type&8) ? "spare" : "",
1147 (type&16)? ", foreign" : "",
1148 (type&32)? "pass-through" : "");
b06e3095 1149 printf("/%s%s%s%s%s%s%s",
a322f70c
DW		 1150 (state&1)? "Online": "Offline",
1151 (state&2)? ", Failed": "",
1152 (state&4)? ", Rebuilding": "",
1153 (state&8)? ", in-transition": "",
b06e3095
N		 1154 (state&16)? ", SMART-errors": "",
1155 (state&32)? ", Unrecovered-Read-Errors": "",
a322f70c 1156 (state&64)? ", Missing" : "");
a322f70c
DW		 1157 printf("\n");
1158 }
1159}
1160
1161static void examine_super_ddf(struct supertype *st, char *homehost)
1162{
1163 struct ddf_super *sb = st->sb;
1164
1165 printf(" Magic : %08x\n", __be32_to_cpu(sb->anchor.magic));
1166 printf(" Version : %.8s\n", sb->anchor.revision);
598f0d58
NB		 1167 printf("Controller GUID : "); print_guid(sb->controller.guid, 0);
1168 printf("\n");
1169 printf(" Container GUID : "); print_guid(sb->anchor.guid, 1);
a322f70c
DW		 1170 printf("\n");
1171 printf(" Seq : %08x\n", __be32_to_cpu(sb->active->seq));
1172 printf(" Redundant hdr : %s\n", sb->secondary.magic == DDF_HEADER_MAGIC
1173 ?"yes" : "no");
1174 examine_vds(sb);
1175 examine_pds(sb);
1176}
1177
ff54de6e
N		 1178static void getinfo_super_ddf(struct supertype *st, struct mdinfo *info);
1179
42dc2744 1180static void uuid_from_super_ddf(struct supertype *st, int uuid[4]);
ff54de6e 1181
061f2c6a 1182static void brief_examine_super_ddf(struct supertype *st, int verbose)
4737ae25
N		 1183{
1184 /* We just write a generic DDF ARRAY entry
1185 */
1186 struct mdinfo info;
1187 char nbuf[64];
1188 getinfo_super_ddf(st, &info);
1189 fname_from_uuid(st, &info, nbuf, ':');
1190
1191 printf("ARRAY metadata=ddf UUID=%s\n", nbuf + 5);
1192}
1193
1194static void brief_examine_subarrays_ddf(struct supertype *st, int verbose)
a322f70c
DW		 1195{
1196 /* We just write a generic DDF ARRAY entry
a322f70c 1197 */
42dc2744 1198 struct ddf_super *ddf = st->sb;
ff54de6e 1199 struct mdinfo info;
42dc2744 1200 int i;
ff54de6e
N		 1201 char nbuf[64];
1202 getinfo_super_ddf(st, &info);
1203 fname_from_uuid(st, &info, nbuf, ':');
42dc2744
N		 1204
1205 for (i=0; i<__be16_to_cpu(ddf->virt->max_vdes); i++) {
1206 struct virtual_entry *ve = &ddf->virt->entries[i];
1207 struct vcl vcl;
1208 char nbuf1[64];
1209 if (all_ff(ve->guid))
1210 continue;
1211 memcpy(vcl.conf.guid, ve->guid, DDF_GUID_LEN);
1212 ddf->currentconf =&vcl;
1213 uuid_from_super_ddf(st, info.uuid);
1214 fname_from_uuid(st, &info, nbuf1, ':');
1215 printf("ARRAY container=%s member=%d UUID=%s\n",
1216 nbuf+5, i, nbuf1+5);
1217 }
a322f70c
DW		 1218}
1219
bceedeec
N		 1220static void export_examine_super_ddf(struct supertype *st)
1221{
1222 struct mdinfo info;
1223 char nbuf[64];
1224 getinfo_super_ddf(st, &info);
1225 fname_from_uuid(st, &info, nbuf, ':');
1226 printf("MD_METADATA=ddf\n");
1227 printf("MD_LEVEL=container\n");
1228 printf("MD_UUID=%s\n", nbuf+5);
1229}
1230
1231
a322f70c
DW		 1232static void detail_super_ddf(struct supertype *st, char *homehost)
1233{
1234 /* FIXME later
1235 * Could print DDF GUID
1236 * Need to find which array
1237 * If whole, briefly list all arrays
1238 * If one, give name
1239 */
1240}
1241
1242static void brief_detail_super_ddf(struct supertype *st)
1243{
1244 /* FIXME I really need to know which array we are detailing.
1245 * Can that be stored in ddf_super??
1246 */
1247// struct ddf_super *ddf = st->sb;
ff54de6e
N		 1248 struct mdinfo info;
1249 char nbuf[64];
1250 getinfo_super_ddf(st, &info);
1251 fname_from_uuid(st, &info, nbuf,':');
1252 printf(" UUID=%s", nbuf + 5);
a322f70c 1253}
a322f70c
DW		 1254#endif
1255
1256static int match_home_ddf(struct supertype *st, char *homehost)
1257{
1258 /* It matches 'this' host if the controller is a
1259 * Linux-MD controller with vendor_data matching
1260 * the hostname
1261 */
1262 struct ddf_super *ddf = st->sb;
d1d3482b
N		 1263 int len;
1264
1265 if (!homehost)
1266 return 0;
1267 len = strlen(homehost);
a322f70c
DW		 1268
1269 return (memcmp(ddf->controller.guid, T10, 8) == 0 &&
1270 len < sizeof(ddf->controller.vendor_data) &&
1271 memcmp(ddf->controller.vendor_data, homehost,len) == 0 &&
1272 ddf->controller.vendor_data[len] == 0);
1273}
1274
0e600426 1275#ifndef MDASSEMBLE
7a7cc504 1276static struct vd_config *find_vdcr(struct ddf_super *ddf, int inst)
a322f70c 1277{
7a7cc504 1278 struct vcl *v;
59e36268 1279
7a7cc504 1280 for (v = ddf->conflist; v; v = v->next)
59e36268 1281 if (inst == v->vcnum)
7a7cc504
NB		 1282 return &v->conf;
1283 return NULL;
1284}
0e600426 1285#endif
7a7cc504
NB		 1286
1287static int find_phys(struct ddf_super *ddf, __u32 phys_refnum)
1288{
1289 /* Find the entry in phys_disk which has the given refnum
1290 * and return it's index
1291 */
1292 int i;
1293 for (i=0; i < __be16_to_cpu(ddf->phys->max_pdes); i++)
1294 if (ddf->phys->entries[i].refnum == phys_refnum)
1295 return i;
1296 return -1;
a322f70c
DW		 1297}
1298
1299static void uuid_from_super_ddf(struct supertype *st, int uuid[4])
1300{
1301 /* The uuid returned here is used for:
1302 * uuid to put into bitmap file (Create, Grow)
1303 * uuid for backup header when saving critical section (Grow)
1304 * comparing uuids when re-adding a device into an array
51006d85
N		 1305 * In these cases the uuid required is that of the data-array,
1306 * not the device-set.
1307 * uuid to recognise same set when adding a missing device back
1308 * to an array. This is a uuid for the device-set.
1309 *
a322f70c
DW		 1310 * For each of these we can make do with a truncated
1311 * or hashed uuid rather than the original, as long as
1312 * everyone agrees.
a322f70c
DW		 1313 * In the case of SVD we assume the BVD is of interest,
1314 * though that might be the case if a bitmap were made for
1315 * a mirrored SVD - worry about that later.
1316 * So we need to find the VD configuration record for the
1317 * relevant BVD and extract the GUID and Secondary_Element_Seq.
1318 * The first 16 bytes of the sha1 of these is used.
1319 */
1320 struct ddf_super *ddf = st->sb;
d2ca6449 1321 struct vcl *vcl = ddf->currentconf;
c5afc314
N		 1322 char *guid;
1323 char buf[20];
1324 struct sha1_ctx ctx;
a322f70c 1325
c5afc314
N		 1326 if (vcl)
1327 guid = vcl->conf.guid;
1328 else
1329 guid = ddf->anchor.guid;
1330
1331 sha1_init_ctx(&ctx);
1332 sha1_process_bytes(guid, DDF_GUID_LEN, &ctx);
c5afc314
N		 1333 sha1_finish_ctx(&ctx, buf);
1334 memcpy(uuid, buf, 4*4);
a322f70c
DW		 1335}
1336
78e44928
NB		 1337static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info);
1338
a322f70c
DW		 1339static void getinfo_super_ddf(struct supertype *st, struct mdinfo *info)
1340{
1341 struct ddf_super *ddf = st->sb;
1342
78e44928
NB		 1343 if (ddf->currentconf) {
1344 getinfo_super_ddf_bvd(st, info);
1345 return;
1346 }
1347
a322f70c
DW		 1348 info->array.raid_disks = __be16_to_cpu(ddf->phys->used_pdes);
1349 info->array.level = LEVEL_CONTAINER;
1350 info->array.layout = 0;
1351 info->array.md_minor = -1;
1352 info->array.ctime = DECADE + __be32_to_cpu(*(__u32*)
1353 (ddf->anchor.guid+16));
1354 info->array.utime = 0;
1355 info->array.chunk_size = 0;
1356
a322f70c
DW		 1357
1358 info->disk.major = 0;
1359 info->disk.minor = 0;
cba0191b
NB		 1360 if (ddf->dlist) {
1361 info->disk.number = __be32_to_cpu(ddf->dlist->disk.refnum);
59e36268 1362 info->disk.raid_disk = find_phys(ddf, ddf->dlist->disk.refnum);
d2ca6449
NB		 1363
1364 info->data_offset = __be64_to_cpu(ddf->phys->
1365 entries[info->disk.raid_disk].
1366 config_size);
1367 info->component_size = ddf->dlist->size - info->data_offset;
cba0191b
NB		 1368 } else {
1369 info->disk.number = -1;
661dce36 1370 info->disk.raid_disk = -1;
cba0191b
NB		 1371// info->disk.raid_disk = find refnum in the table and use index;
1372 }
f22385f9 1373 info->disk.state = (1 << MD_DISK_SYNC) | (1 << MD_DISK_ACTIVE);
a19c88b8 1374
d2ca6449 1375
921d9e16 1376 info->recovery_start = MaxSector;
a19c88b8 1377 info->reshape_active = 0;
c5afc314 1378 info->name[0] = 0;
a322f70c 1379
f35f2525
N		 1380 info->array.major_version = -1;
1381 info->array.minor_version = -2;
159c3a1a 1382 strcpy(info->text_version, "ddf");
a67dd8cc 1383 info->safe_mode_delay = 0;
159c3a1a 1384
c5afc314 1385 uuid_from_super_ddf(st, info->uuid);
a322f70c 1386
a322f70c
DW		 1387}
1388
598f0d58
NB		 1389static int rlq_to_layout(int rlq, int prl, int raiddisks);
1390
a322f70c
DW		 1391static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info)
1392{
1393 struct ddf_super *ddf = st->sb;
d2ca6449
NB		 1394 struct vcl *vc = ddf->currentconf;
1395 int cd = ddf->currentdev;
db42fa9b 1396 int j;
8592f29d 1397 struct dl *dl;
a322f70c
DW		 1398
1399 /* FIXME this returns BVD info - what if we want SVD ?? */
1400
d2ca6449
NB		 1401 info->array.raid_disks = __be16_to_cpu(vc->conf.prim_elmnt_count);
1402 info->array.level = map_num1(ddf_level_num, vc->conf.prl);
1403 info->array.layout = rlq_to_layout(vc->conf.rlq, vc->conf.prl,
598f0d58 1404 info->array.raid_disks);
a322f70c 1405 info->array.md_minor = -1;
d2ca6449
NB		 1406 info->array.ctime = DECADE +
1407 __be32_to_cpu(*(__u32*)(vc->conf.guid+16));
1408 info->array.utime = DECADE + __be32_to_cpu(vc->conf.timestamp);
1409 info->array.chunk_size = 512 << vc->conf.chunk_shift;
da9b4a62 1410 info->custom_array_size = 0;
d2ca6449
NB		 1411
1412 if (cd >= 0 && cd < ddf->mppe) {
1413 info->data_offset = __be64_to_cpu(vc->lba_offset[cd]);
1414 if (vc->block_sizes)
1415 info->component_size = vc->block_sizes[cd];
1416 else
1417 info->component_size = __be64_to_cpu(vc->conf.blocks);
1418 }
a322f70c 1419
8592f29d
N		 1420 for (dl = ddf->dlist; dl ; dl = dl->next)
1421 if (dl->raiddisk == info->disk.raid_disk)
1422 break;
a322f70c
DW		 1423 info->disk.major = 0;
1424 info->disk.minor = 0;
8592f29d
N		 1425 if (dl) {
1426 info->disk.major = dl->major;
1427 info->disk.minor = dl->minor;
1428 }
a322f70c
DW		 1429// info->disk.number = __be32_to_cpu(ddf->disk.refnum);
1430// info->disk.raid_disk = find refnum in the table and use index;
1431// info->disk.state = ???;
1432
103f2410
NB		 1433 info->container_member = ddf->currentconf->vcnum;
1434
921d9e16 1435 info->recovery_start = MaxSector;
80d26cb2 1436 info->resync_start = 0;
624c5ad4 1437 info->reshape_active = 0;
80d26cb2
NB		 1438 if (!(ddf->virt->entries[info->container_member].state
1439 & DDF_state_inconsistent) &&
1440 (ddf->virt->entries[info->container_member].init_state
1441 & DDF_initstate_mask)
1442 == DDF_init_full)
b7528a20 1443 info->resync_start = MaxSector;
80d26cb2 1444
a322f70c
DW		 1445 uuid_from_super_ddf(st, info->uuid);
1446
3576e302 1447 info->container_member = atoi(st->subarray);
f35f2525
N		 1448 info->array.major_version = -1;
1449 info->array.minor_version = -2;
3576e302 1450 sprintf(info->text_version, "/%s/%s",
159c3a1a 1451 devnum2devname(st->container_dev),
3576e302 1452 st->subarray);
a67dd8cc 1453 info->safe_mode_delay = 200;
159c3a1a 1454
db42fa9b
N		 1455 memcpy(info->name, ddf->virt->entries[info->container_member].name, 16);
1456 info->name[16]=0;
1457 for(j=0; j<16; j++)
1458 if (info->name[j] == ' ')
1459 info->name[j] = 0;
a322f70c
DW		 1460}
1461
598f0d58 1462
a322f70c
DW		 1463static int update_super_ddf(struct supertype *st, struct mdinfo *info,
1464 char *update,
1465 char *devname, int verbose,
1466 int uuid_set, char *homehost)
1467{
1468 /* For 'assemble' and 'force' we need to return non-zero if any
1469 * change was made. For others, the return value is ignored.
1470 * Update options are:
1471 * force-one : This device looks a bit old but needs to be included,
1472 * update age info appropriately.
1473 * assemble: clear any 'faulty' flag to allow this device to
1474 * be assembled.
1475 * force-array: Array is degraded but being forced, mark it clean
1476 * if that will be needed to assemble it.
1477 *
1478 * newdev: not used ????
1479 * grow: Array has gained a new device - this is currently for
1480 * linear only
1481 * resync: mark as dirty so a resync will happen.
59e36268 1482 * uuid: Change the uuid of the array to match what is given
a322f70c
DW		 1483 * homehost: update the recorded homehost
1484 * name: update the name - preserving the homehost
1485 * _reshape_progress: record new reshape_progress position.
1486 *
1487 * Following are not relevant for this version:
1488 * sparc2.2 : update from old dodgey metadata
1489 * super-minor: change the preferred_minor number
1490 * summaries: update redundant counters.
1491 */
1492 int rv = 0;
1493// struct ddf_super *ddf = st->sb;
7a7cc504 1494// struct vd_config *vd = find_vdcr(ddf, info->container_member);
a322f70c
DW		 1495// struct virtual_entry *ve = find_ve(ddf);
1496
a322f70c
DW		 1497 /* we don't need to handle "force-*" or "assemble" as
1498 * there is no need to 'trick' the kernel. We the metadata is
1499 * first updated to activate the array, all the implied modifications
1500 * will just happen.
1501 */
1502
1503 if (strcmp(update, "grow") == 0) {
1504 /* FIXME */
1505 }
1506 if (strcmp(update, "resync") == 0) {
1507// info->resync_checkpoint = 0;
1508 }
1509 /* We ignore UUID updates as they make even less sense
1510 * with DDF
1511 */
1512 if (strcmp(update, "homehost") == 0) {
1513 /* homehost is stored in controller->vendor_data,
1514 * or it is when we are the vendor
1515 */
1516// if (info->vendor_is_local)
1517// strcpy(ddf->controller.vendor_data, homehost);
1518 }
1519 if (strcmp(update, "name") == 0) {
1520 /* name is stored in virtual_entry->name */
1521// memset(ve->name, ' ', 16);
1522// strncpy(ve->name, info->name, 16);
1523 }
1524 if (strcmp(update, "_reshape_progress") == 0) {
1525 /* We don't support reshape yet */
1526 }
1527
1528// update_all_csum(ddf);
1529
1530 return rv;
1531}
1532
5f8097be
NB		 1533static void make_header_guid(char *guid)
1534{
1535 __u32 stamp;
5f8097be
NB		 1536 /* Create a DDF Header of Virtual Disk GUID */
1537
1538 /* 24 bytes of fiction required.
1539 * first 8 are a 'vendor-id' - "Linux-MD"
1540 * next 8 are controller type.. how about 0X DEAD BEEF 0000 0000
1541 * Remaining 8 random number plus timestamp
1542 */
1543 memcpy(guid, T10, sizeof(T10));
1544 stamp = __cpu_to_be32(0xdeadbeef);
1545 memcpy(guid+8, &stamp, 4);
1546 stamp = __cpu_to_be32(0);
1547 memcpy(guid+12, &stamp, 4);
1548 stamp = __cpu_to_be32(time(0) - DECADE);
1549 memcpy(guid+16, &stamp, 4);
bfb7ea78 1550 stamp = random32();
5f8097be 1551 memcpy(guid+20, &stamp, 4);
5f8097be 1552}
59e36268 1553
78e44928
NB		 1554static int init_super_ddf_bvd(struct supertype *st,
1555 mdu_array_info_t *info,
1556 unsigned long long size,
1557 char *name, char *homehost,
1558 int *uuid);
1559
a322f70c
DW		 1560static int init_super_ddf(struct supertype *st,
1561 mdu_array_info_t *info,
1562 unsigned long long size, char *name, char *homehost,
1563 int *uuid)
1564{
1565 /* This is primarily called by Create when creating a new array.
1566 * We will then get add_to_super called for each component, and then
1567 * write_init_super called to write it out to each device.
1568 * For DDF, Create can create on fresh devices or on a pre-existing
1569 * array.
1570 * To create on a pre-existing array a different method will be called.
1571 * This one is just for fresh drives.
1572 *
1573 * We need to create the entire 'ddf' structure which includes:
1574 * DDF headers - these are easy.
1575 * Controller data - a Sector describing this controller .. not that
1576 * this is a controller exactly.
1577 * Physical Disk Record - one entry per device, so
1578 * leave plenty of space.
1579 * Virtual Disk Records - again, just leave plenty of space.
1580 * This just lists VDs, doesn't give details
1581 * Config records - describes the VDs that use this disk
1582 * DiskData - describes 'this' device.
1583 * BadBlockManagement - empty
1584 * Diag Space - empty
1585 * Vendor Logs - Could we put bitmaps here?
1586 *
1587 */
1588 struct ddf_super *ddf;
1589 char hostname[17];
1590 int hostlen;
a322f70c
DW		 1591 int max_phys_disks, max_virt_disks;
1592 unsigned long long sector;
1593 int clen;
1594 int i;
1595 int pdsize, vdsize;
1596 struct phys_disk *pd;
1597 struct virtual_disk *vd;
1598
78e44928 1599 if (st->sb)
955e9ea1 1600 return init_super_ddf_bvd(st, info, size, name, homehost, uuid);
ba7eb04f 1601
3d2c4fc7
DW		 1602 if (posix_memalign((void**)&ddf, 512, sizeof(*ddf)) != 0) {
1603 fprintf(stderr, Name ": %s could not allocate superblock\n", __func__);
1604 return 0;
1605 }
6264b437 1606 memset(ddf, 0, sizeof(*ddf));
a322f70c
DW		 1607 ddf->dlist = NULL; /* no physical disks yet */
1608 ddf->conflist = NULL; /* No virtual disks yet */
955e9ea1
DW		 1609 st->sb = ddf;
1610
1611 if (info == NULL) {
1612 /* zeroing superblock */
1613 return 0;
1614 }
a322f70c
DW		 1615
1616 /* At least 32MB *must* be reserved for the ddf. So let's just
1617 * start 32MB from the end, and put the primary header there.
1618 * Don't do secondary for now.
1619 * We don't know exactly where that will be yet as it could be
1620 * different on each device. To just set up the lengths.
1621 *
1622 */
1623
1624 ddf->anchor.magic = DDF_HEADER_MAGIC;
5f8097be 1625 make_header_guid(ddf->anchor.guid);
a322f70c 1626
59e36268 1627 memcpy(ddf->anchor.revision, DDF_REVISION_2, 8);
a322f70c
DW		 1628 ddf->anchor.seq = __cpu_to_be32(1);
1629 ddf->anchor.timestamp = __cpu_to_be32(time(0) - DECADE);
1630 ddf->anchor.openflag = 0xFF;
1631 ddf->anchor.foreignflag = 0;
1632 ddf->anchor.enforcegroups = 0; /* Is this best?? */
1633 ddf->anchor.pad0 = 0xff;
1634 memset(ddf->anchor.pad1, 0xff, 12);
1635 memset(ddf->anchor.header_ext, 0xff, 32);
1636 ddf->anchor.primary_lba = ~(__u64)0;
1637 ddf->anchor.secondary_lba = ~(__u64)0;
1638 ddf->anchor.type = DDF_HEADER_ANCHOR;
1639 memset(ddf->anchor.pad2, 0xff, 3);
1640 ddf->anchor.workspace_len = __cpu_to_be32(32768); /* Must be reserved */
1641 ddf->anchor.workspace_lba = ~(__u64)0; /* Put this at bottom
1642 of 32M reserved.. */
1643 max_phys_disks = 1023; /* Should be enough */
1644 ddf->anchor.max_pd_entries = __cpu_to_be16(max_phys_disks);
1645 max_virt_disks = 255;
1646 ddf->anchor.max_vd_entries = __cpu_to_be16(max_virt_disks); /* ?? */
1647 ddf->anchor.max_partitions = __cpu_to_be16(64); /* ?? */
1648 ddf->max_part = 64;
8c3b8c2c 1649 ddf->mppe = 256;
59e36268
NB		 1650 ddf->conf_rec_len = 1 + ROUND_UP(ddf->mppe * (4+8), 512)/512;
1651 ddf->anchor.config_record_len = __cpu_to_be16(ddf->conf_rec_len);
1652 ddf->anchor.max_primary_element_entries = __cpu_to_be16(ddf->mppe);
a322f70c 1653 memset(ddf->anchor.pad3, 0xff, 54);
a322f70c
DW		 1654 /* controller sections is one sector long immediately
1655 * after the ddf header */
1656 sector = 1;
1657 ddf->anchor.controller_section_offset = __cpu_to_be32(sector);
1658 ddf->anchor.controller_section_length = __cpu_to_be32(1);
1659 sector += 1;
1660
1661 /* phys is 8 sectors after that */
1662 pdsize = ROUND_UP(sizeof(struct phys_disk) +
1663 sizeof(struct phys_disk_entry)*max_phys_disks,
1664 512);
1665 switch(pdsize/512) {
1666 case 2: case 8: case 32: case 128: case 512: break;
1667 default: abort();
1668 }
1669 ddf->anchor.phys_section_offset = __cpu_to_be32(sector);
1670 ddf->anchor.phys_section_length =
1671 __cpu_to_be32(pdsize/512); /* max_primary_element_entries/8 */
1672 sector += pdsize/512;
1673
1674 /* virt is another 32 sectors */
1675 vdsize = ROUND_UP(sizeof(struct virtual_disk) +
1676 sizeof(struct virtual_entry) * max_virt_disks,
1677 512);
1678 switch(vdsize/512) {
1679 case 2: case 8: case 32: case 128: case 512: break;
1680 default: abort();
1681 }
1682 ddf->anchor.virt_section_offset = __cpu_to_be32(sector);
1683 ddf->anchor.virt_section_length =
1684 __cpu_to_be32(vdsize/512); /* max_vd_entries/8 */
1685 sector += vdsize/512;
1686
59e36268 1687 clen = ddf->conf_rec_len * (ddf->max_part+1);
a322f70c
DW		 1688 ddf->anchor.config_section_offset = __cpu_to_be32(sector);
1689 ddf->anchor.config_section_length = __cpu_to_be32(clen);
1690 sector += clen;
1691
1692 ddf->anchor.data_section_offset = __cpu_to_be32(sector);
1693 ddf->anchor.data_section_length = __cpu_to_be32(1);
1694 sector += 1;
1695
1696 ddf->anchor.bbm_section_length = __cpu_to_be32(0);
1697 ddf->anchor.bbm_section_offset = __cpu_to_be32(0xFFFFFFFF);
1698 ddf->anchor.diag_space_length = __cpu_to_be32(0);
1699 ddf->anchor.diag_space_offset = __cpu_to_be32(0xFFFFFFFF);
1700 ddf->anchor.vendor_length = __cpu_to_be32(0);
1701 ddf->anchor.vendor_offset = __cpu_to_be32(0xFFFFFFFF);
1702
1703 memset(ddf->anchor.pad4, 0xff, 256);
1704
1705 memcpy(&ddf->primary, &ddf->anchor, 512);
1706 memcpy(&ddf->secondary, &ddf->anchor, 512);
1707
1708 ddf->primary.openflag = 1; /* I guess.. */
1709 ddf->primary.type = DDF_HEADER_PRIMARY;
1710
1711 ddf->secondary.openflag = 1; /* I guess.. */
1712 ddf->secondary.type = DDF_HEADER_SECONDARY;
1713
1714 ddf->active = &ddf->primary;
1715
1716 ddf->controller.magic = DDF_CONTROLLER_MAGIC;
1717
1718 /* 24 more bytes of fiction required.
1719 * first 8 are a 'vendor-id' - "Linux-MD"
1720 * Remaining 16 are serial number.... maybe a hostname would do?
1721 */
1722 memcpy(ddf->controller.guid, T10, sizeof(T10));
1ba6bff9
DW		 1723 gethostname(hostname, sizeof(hostname));
1724 hostname[sizeof(hostname) - 1] = 0;
a322f70c
DW		 1725 hostlen = strlen(hostname);
1726 memcpy(ddf->controller.guid + 24 - hostlen, hostname, hostlen);
1727 for (i = strlen(T10) ; i+hostlen < 24; i++)
1728 ddf->controller.guid[i] = ' ';
1729
1730 ddf->controller.type.vendor_id = __cpu_to_be16(0xDEAD);
1731 ddf->controller.type.device_id = __cpu_to_be16(0xBEEF);
1732 ddf->controller.type.sub_vendor_id = 0;
1733 ddf->controller.type.sub_device_id = 0;
1734 memcpy(ddf->controller.product_id, "What Is My PID??", 16);
1735 memset(ddf->controller.pad, 0xff, 8);
1736 memset(ddf->controller.vendor_data, 0xff, 448);
a9e1c11d
N		 1737 if (homehost && strlen(homehost) < 440)
1738 strcpy((char*)ddf->controller.vendor_data, homehost);
a322f70c 1739
3d2c4fc7
DW		 1740 if (posix_memalign((void**)&pd, 512, pdsize) != 0) {
1741 fprintf(stderr, Name ": %s could not allocate pd\n", __func__);
1742 return 0;
1743 }
6416d527 1744 ddf->phys = pd;
a322f70c
DW		 1745 ddf->pdsize = pdsize;
1746
1747 memset(pd, 0xff, pdsize);
1748 memset(pd, 0, sizeof(*pd));
076515ba 1749 pd->magic = DDF_PHYS_RECORDS_MAGIC;
a322f70c
DW		 1750 pd->used_pdes = __cpu_to_be16(0);
1751 pd->max_pdes = __cpu_to_be16(max_phys_disks);
1752 memset(pd->pad, 0xff, 52);
1753
3d2c4fc7
DW		 1754 if (posix_memalign((void**)&vd, 512, vdsize) != 0) {
1755 fprintf(stderr, Name ": %s could not allocate vd\n", __func__);
1756 return 0;
1757 }
6416d527 1758 ddf->virt = vd;
a322f70c
DW		 1759 ddf->vdsize = vdsize;
1760 memset(vd, 0, vdsize);
1761 vd->magic = DDF_VIRT_RECORDS_MAGIC;
1762 vd->populated_vdes = __cpu_to_be16(0);
1763 vd->max_vdes = __cpu_to_be16(max_virt_disks);
1764 memset(vd->pad, 0xff, 52);
1765
5f8097be
NB		 1766 for (i=0; i<max_virt_disks; i++)
1767 memset(&vd->entries[i], 0xff, sizeof(struct virtual_entry));
1768
a322f70c 1769 st->sb = ddf;
18a2f463 1770 ddf->updates_pending = 1;
a322f70c
DW		 1771 return 1;
1772}
1773
5f8097be
NB		 1774static int chunk_to_shift(int chunksize)
1775{
1776 return ffs(chunksize/512)-1;
1777}
1778
1779static int level_to_prl(int level)
1780{
1781 switch (level) {
1782 case LEVEL_LINEAR: return DDF_CONCAT;
1783 case 0: return DDF_RAID0;
1784 case 1: return DDF_RAID1;
1785 case 4: return DDF_RAID4;
1786 case 5: return DDF_RAID5;
1787 case 6: return DDF_RAID6;
1788 default: return -1;
1789 }
1790}
1791static int layout_to_rlq(int level, int layout, int raiddisks)
1792{
1793 switch(level) {
1794 case 0:
1795 return DDF_RAID0_SIMPLE;
1796 case 1:
1797 switch(raiddisks) {
1798 case 2: return DDF_RAID1_SIMPLE;
1799 case 3: return DDF_RAID1_MULTI;
1800 default: return -1;
1801 }
1802 case 4:
1803 switch(layout) {
1804 case 0: return DDF_RAID4_N;
1805 }
1806 break;
1807 case 5:
5f8097be
NB		 1808 switch(layout) {
1809 case ALGORITHM_LEFT_ASYMMETRIC:
1810 return DDF_RAID5_N_RESTART;
1811 case ALGORITHM_RIGHT_ASYMMETRIC:
b640a252 1812 return DDF_RAID5_0_RESTART;
5f8097be
NB		 1813 case ALGORITHM_LEFT_SYMMETRIC:
1814 return DDF_RAID5_N_CONTINUE;
1815 case ALGORITHM_RIGHT_SYMMETRIC:
1816 return -1; /* not mentioned in standard */
1817 }
b640a252
N		 1818 case 6:
1819 switch(layout) {
1820 case ALGORITHM_ROTATING_N_RESTART:
1821 return DDF_RAID5_N_RESTART;
1822 case ALGORITHM_ROTATING_ZERO_RESTART:
1823 return DDF_RAID6_0_RESTART;
1824 case ALGORITHM_ROTATING_N_CONTINUE:
1825 return DDF_RAID5_N_CONTINUE;
1826 }
5f8097be
NB		 1827 }
1828 return -1;
1829}
1830
598f0d58
NB		 1831static int rlq_to_layout(int rlq, int prl, int raiddisks)
1832{
1833 switch(prl) {
1834 case DDF_RAID0:
1835 return 0; /* hopefully rlq == DDF_RAID0_SIMPLE */
1836 case DDF_RAID1:
1837 return 0; /* hopefully rlq == SIMPLE or MULTI depending
1838 on raiddisks*/
1839 case DDF_RAID4:
1840 switch(rlq) {
1841 case DDF_RAID4_N:
1842 return 0;
1843 default:
1844 /* not supported */
1845 return -1; /* FIXME this isn't checked */
1846 }
1847 case DDF_RAID5:
598f0d58
NB		 1848 switch(rlq) {
1849 case DDF_RAID5_N_RESTART:
1850 return ALGORITHM_LEFT_ASYMMETRIC;
1851 case DDF_RAID5_0_RESTART:
1852 return ALGORITHM_RIGHT_ASYMMETRIC;
1853 case DDF_RAID5_N_CONTINUE:
1854 return ALGORITHM_LEFT_SYMMETRIC;
1855 default:
1856 return -1;
1857 }
59e36268
NB		 1858 case DDF_RAID6:
1859 switch(rlq) {
1860 case DDF_RAID5_N_RESTART:
b640a252 1861 return ALGORITHM_ROTATING_N_RESTART;
59e36268 1862 case DDF_RAID6_0_RESTART:
b640a252 1863 return ALGORITHM_ROTATING_ZERO_RESTART;
59e36268 1864 case DDF_RAID5_N_CONTINUE:
b640a252 1865 return ALGORITHM_ROTATING_N_CONTINUE;
59e36268
NB		 1866 default:
1867 return -1;
1868 }
598f0d58
NB		 1869 }
1870 return -1;
1871}
1872
0e600426 1873#ifndef MDASSEMBLE
59e36268
NB		 1874struct extent {
1875 unsigned long long start, size;
1876};
78e44928 1877static int cmp_extent(const void *av, const void *bv)
59e36268
NB		 1878{
1879 const struct extent *a = av;
1880 const struct extent *b = bv;
1881 if (a->start < b->start)
1882 return -1;
1883 if (a->start > b->start)
1884 return 1;
1885 return 0;
1886}
1887
78e44928 1888static struct extent *get_extents(struct ddf_super *ddf, struct dl *dl)
59e36268
NB		 1889{
1890 /* find a list of used extents on the give physical device
1891 * (dnum) of the given ddf.
1892 * Return a malloced array of 'struct extent'
1893
1894FIXME ignore DDF_Legacy devices?
1895
1896 */
1897 struct extent *rv;
1898 int n = 0;
1899 int i, j;
1900
1901 rv = malloc(sizeof(struct extent) * (ddf->max_part + 2));
1902 if (!rv)
1903 return NULL;
1904
1905 for (i = 0; i < ddf->max_part; i++) {
1906 struct vcl *v = dl->vlist[i];
1907 if (v == NULL)
1908 continue;
1909 for (j=0; j < v->conf.prim_elmnt_count; j++)
1910 if (v->conf.phys_refnum[j] == dl->disk.refnum) {
1911 /* This device plays role 'j' in 'v'. */
1912 rv[n].start = __be64_to_cpu(v->lba_offset[j]);
1913 rv[n].size = __be64_to_cpu(v->conf.blocks);
1914 n++;
1915 break;
1916 }
1917 }
1918 qsort(rv, n, sizeof(*rv), cmp_extent);
1919
1920 rv[n].start = __be64_to_cpu(ddf->phys->entries[dl->pdnum].config_size);
1921 rv[n].size = 0;
1922 return rv;
1923}
0e600426 1924#endif
59e36268 1925
5f8097be
NB		 1926static int init_super_ddf_bvd(struct supertype *st,
1927 mdu_array_info_t *info,
1928 unsigned long long size,
1929 char *name, char *homehost,
1930 int *uuid)
1931{
1932 /* We are creating a BVD inside a pre-existing container.
1933 * so st->sb is already set.
1934 * We need to create a new vd_config and a new virtual_entry
1935 */
1936 struct ddf_super *ddf = st->sb;
1937 int venum;
1938 struct virtual_entry *ve;
1939 struct vcl *vcl;
1940 struct vd_config *vc;
5f8097be
NB		 1941
1942 if (__be16_to_cpu(ddf->virt->populated_vdes)
1943 >= __be16_to_cpu(ddf->virt->max_vdes)) {
1944 fprintf(stderr, Name": This ddf already has the "
1945 "maximum of %d virtual devices\n",
1946 __be16_to_cpu(ddf->virt->max_vdes));
1947 return 0;
1948 }
1949
1950 for (venum = 0; venum < __be16_to_cpu(ddf->virt->max_vdes); venum++)
1951 if (all_ff(ddf->virt->entries[venum].guid))
1952 break;
1953 if (venum == __be16_to_cpu(ddf->virt->max_vdes)) {
1954 fprintf(stderr, Name ": Cannot find spare slot for "
1955 "virtual disk - DDF is corrupt\n");
1956 return 0;
1957 }
1958 ve = &ddf->virt->entries[venum];
1959
1960 /* A Virtual Disk GUID contains the T10 Vendor ID, controller type,
1961 * timestamp, random number
1962 */
1963 make_header_guid(ve->guid);
1964 ve->unit = __cpu_to_be16(info->md_minor);
1965 ve->pad0 = 0xFFFF;
1966 ve->guid_crc = crc32(0, (unsigned char*)ddf->anchor.guid, DDF_GUID_LEN);
1967 ve->type = 0;
7a7cc504
NB		 1968 ve->state = DDF_state_degraded; /* Will be modified as devices are added */
1969 if (info->state & 1) /* clean */
1970 ve->init_state = DDF_init_full;
1971 else
1972 ve->init_state = DDF_init_not;
1973
5f8097be
NB		 1974 memset(ve->pad1, 0xff, 14);
1975 memset(ve->name, ' ', 16);
1976 if (name)
1977 strncpy(ve->name, name, 16);
1978 ddf->virt->populated_vdes =
1979 __cpu_to_be16(__be16_to_cpu(ddf->virt->populated_vdes)+1);
1980
1981 /* Now create a new vd_config */
3d2c4fc7
DW		 1982 if (posix_memalign((void**)&vcl, 512,
1983 (offsetof(struct vcl, conf) + ddf->conf_rec_len * 512)) != 0) {
1984 fprintf(stderr, Name ": %s could not allocate vd_config\n", __func__);
1985 return 0;
1986 }
8c3b8c2c 1987 vcl->lba_offset = (__u64*) &vcl->conf.phys_refnum[ddf->mppe];
59e36268 1988 vcl->vcnum = venum;
f7e7067b 1989 sprintf(st->subarray, "%d", venum);
59e36268 1990 vcl->block_sizes = NULL; /* FIXME not for CONCAT */
5f8097be
NB		 1991
1992 vc = &vcl->conf;
1993
1994 vc->magic = DDF_VD_CONF_MAGIC;
1995 memcpy(vc->guid, ve->guid, DDF_GUID_LEN);
1996 vc->timestamp = __cpu_to_be32(time(0)-DECADE);
1997 vc->seqnum = __cpu_to_be32(1);
1998 memset(vc->pad0, 0xff, 24);
1999 vc->prim_elmnt_count = __cpu_to_be16(info->raid_disks);
2000 vc->chunk_shift = chunk_to_shift(info->chunk_size);
2001 vc->prl = level_to_prl(info->level);
2002 vc->rlq = layout_to_rlq(info->level, info->layout, info->raid_disks);
2003 vc->sec_elmnt_count = 1;
2004 vc->sec_elmnt_seq = 0;
2005 vc->srl = 0;
2006 vc->blocks = __cpu_to_be64(info->size * 2);
2007 vc->array_blocks = __cpu_to_be64(
2008 calc_array_size(info->level, info->raid_disks, info->layout,
2009 info->chunk_size, info->size*2));
2010 memset(vc->pad1, 0xff, 8);
2011 vc->spare_refs[0] = 0xffffffff;
2012 vc->spare_refs[1] = 0xffffffff;
2013 vc->spare_refs[2] = 0xffffffff;
2014 vc->spare_refs[3] = 0xffffffff;
2015 vc->spare_refs[4] = 0xffffffff;
2016 vc->spare_refs[5] = 0xffffffff;
2017 vc->spare_refs[6] = 0xffffffff;
2018 vc->spare_refs[7] = 0xffffffff;
2019 memset(vc->cache_pol, 0, 8);
2020 vc->bg_rate = 0x80;
2021 memset(vc->pad2, 0xff, 3);
2022 memset(vc->pad3, 0xff, 52);
2023 memset(vc->pad4, 0xff, 192);
2024 memset(vc->v0, 0xff, 32);
2025 memset(vc->v1, 0xff, 32);
2026 memset(vc->v2, 0xff, 16);
2027 memset(vc->v3, 0xff, 16);
2028 memset(vc->vendor, 0xff, 32);
598f0d58 2029
8c3b8c2c 2030 memset(vc->phys_refnum, 0xff, 4*ddf->mppe);
e5a2a3cf 2031 memset(vc->phys_refnum+ddf->mppe, 0x00, 8*ddf->mppe);
5f8097be
NB		 2032
2033 vcl->next = ddf->conflist;
2034 ddf->conflist = vcl;
d2ca6449 2035 ddf->currentconf = vcl;
18a2f463 2036 ddf->updates_pending = 1;
5f8097be
NB		 2037 return 1;
2038}
2039
0e600426 2040#ifndef MDASSEMBLE
5f8097be
NB		 2041static void add_to_super_ddf_bvd(struct supertype *st,
2042 mdu_disk_info_t *dk, int fd, char *devname)
2043{
2044 /* fd and devname identify a device with-in the ddf container (st).
2045 * dk identifies a location in the new BVD.
2046 * We need to find suitable free space in that device and update
2047 * the phys_refnum and lba_offset for the newly created vd_config.
2048 * We might also want to update the type in the phys_disk
5575e7d9 2049 * section.
8592f29d
N		 2050 *
2051 * Alternately: fd == -1 and we have already chosen which device to
2052 * use and recorded in dlist->raid_disk;
5f8097be
NB		 2053 */
2054 struct dl *dl;
2055 struct ddf_super *ddf = st->sb;
2056 struct vd_config *vc;
2057 __u64 *lba_offset;
7a7cc504 2058 int working;
5575e7d9 2059 int i;
59e36268
NB		 2060 unsigned long long blocks, pos, esize;
2061 struct extent *ex;
5f8097be 2062
8592f29d
N		 2063 if (fd == -1) {
2064 for (dl = ddf->dlist; dl ; dl = dl->next)
2065 if (dl->raiddisk == dk->raid_disk)
2066 break;
2067 } else {
2068 for (dl = ddf->dlist; dl ; dl = dl->next)
2069 if (dl->major == dk->major &&
2070 dl->minor == dk->minor)
2071 break;
2072 }
5f8097be
NB		 2073 if (!dl || ! (dk->state & (1<<MD_DISK_SYNC)))
2074 return;
2075
d2ca6449
NB		 2076 vc = &ddf->currentconf->conf;
2077 lba_offset = ddf->currentconf->lba_offset;
59e36268
NB		 2078
2079 ex = get_extents(ddf, dl);
2080 if (!ex)
2081 return;
2082
2083 i = 0; pos = 0;
2084 blocks = __be64_to_cpu(vc->blocks);
d2ca6449
NB		 2085 if (ddf->currentconf->block_sizes)
2086 blocks = ddf->currentconf->block_sizes[dk->raid_disk];
59e36268
NB		 2087
2088 do {
2089 esize = ex[i].start - pos;
2090 if (esize >= blocks)
2091 break;
2092 pos = ex[i].start + ex[i].size;
2093 i++;
2094 } while (ex[i-1].size);
2095
2096 free(ex);
2097 if (esize < blocks)
2098 return;
2099
d2ca6449 2100 ddf->currentdev = dk->raid_disk;
5f8097be 2101 vc->phys_refnum[dk->raid_disk] = dl->disk.refnum;
59e36268 2102 lba_offset[dk->raid_disk] = __cpu_to_be64(pos);
5f8097be 2103
5575e7d9
NB		 2104 for (i=0; i < ddf->max_part ; i++)
2105 if (dl->vlist[i] == NULL)
2106 break;
2107 if (i == ddf->max_part)
2108 return;
d2ca6449 2109 dl->vlist[i] = ddf->currentconf;
5f8097be 2110
8592f29d
N		 2111 if (fd >= 0)
2112 dl->fd = fd;
2113 if (devname)
2114 dl->devname = devname;
7a7cc504
NB		 2115
2116 /* Check how many working raid_disks, and if we can mark
2117 * array as optimal yet
2118 */
2119 working = 0;
5575e7d9 2120
7a7cc504
NB		 2121 for (i=0; i < __be16_to_cpu(vc->prim_elmnt_count); i++)
2122 if (vc->phys_refnum[i] != 0xffffffff)
2123 working++;
59e36268 2124
5575e7d9 2125 /* Find which virtual_entry */
d2ca6449 2126 i = ddf->currentconf->vcnum;
7a7cc504 2127 if (working == __be16_to_cpu(vc->prim_elmnt_count))
5575e7d9
NB		 2128 ddf->virt->entries[i].state =
2129 (ddf->virt->entries[i].state & ~DDF_state_mask)
7a7cc504
NB		 2130 | DDF_state_optimal;
2131
2132 if (vc->prl == DDF_RAID6 &&
2133 working+1 == __be16_to_cpu(vc->prim_elmnt_count))
5575e7d9
NB		 2134 ddf->virt->entries[i].state =
2135 (ddf->virt->entries[i].state & ~DDF_state_mask)
7a7cc504 2136 | DDF_state_part_optimal;
5575e7d9
NB		 2137
2138 ddf->phys->entries[dl->pdnum].type &= ~__cpu_to_be16(DDF_Global_Spare);
2139 ddf->phys->entries[dl->pdnum].type |= __cpu_to_be16(DDF_Active_in_VD);
18a2f463 2140 ddf->updates_pending = 1;
5f8097be
NB		 2141}
2142
a322f70c
DW		 2143/* add a device to a container, either while creating it or while
2144 * expanding a pre-existing container
2145 */
f20c3968 2146static int add_to_super_ddf(struct supertype *st,
a322f70c
DW		 2147 mdu_disk_info_t *dk, int fd, char *devname)
2148{
2149 struct ddf_super *ddf = st->sb;
2150 struct dl *dd;
2151 time_t now;
2152 struct tm *tm;
2153 unsigned long long size;
2154 struct phys_disk_entry *pde;
2155 int n, i;
2156 struct stat stb;
2157
78e44928
NB		 2158 if (ddf->currentconf) {
2159 add_to_super_ddf_bvd(st, dk, fd, devname);
f20c3968 2160 return 0;
78e44928
NB		 2161 }
2162
a322f70c
DW		 2163 /* This is device numbered dk->number. We need to create
2164 * a phys_disk entry and a more detailed disk_data entry.
2165 */
2166 fstat(fd, &stb);
3d2c4fc7
DW		 2167 if (posix_memalign((void**)&dd, 512,
2168 sizeof(*dd) + sizeof(dd->vlist[0]) * ddf->max_part) != 0) {
2169 fprintf(stderr, Name
2170 ": %s could allocate buffer for new disk, aborting\n",
2171 __func__);
f20c3968 2172 return 1;
3d2c4fc7 2173 }
a322f70c
DW		 2174 dd->major = major(stb.st_rdev);
2175 dd->minor = minor(stb.st_rdev);
2176 dd->devname = devname;
a322f70c 2177 dd->fd = fd;
b2280677 2178 dd->spare = NULL;
a322f70c
DW		 2179
2180 dd->disk.magic = DDF_PHYS_DATA_MAGIC;
2181 now = time(0);
2182 tm = localtime(&now);
2183 sprintf(dd->disk.guid, "%8s%04d%02d%02d",
2184 T10, tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday);
bfb7ea78
N		 2185 *(__u32*)(dd->disk.guid + 16) = random32();
2186 *(__u32*)(dd->disk.guid + 20) = random32();
a322f70c 2187
59e36268
NB		 2188 do {
2189 /* Cannot be bothered finding a CRC of some irrelevant details*/
bfb7ea78 2190 dd->disk.refnum = random32();
59e36268
NB		 2191 for (i = __be16_to_cpu(ddf->active->max_pd_entries) - 1;
2192 i >= 0; i--)
2193 if (ddf->phys->entries[i].refnum == dd->disk.refnum)
2194 break;
2195 } while (i >= 0);
2196
a322f70c
DW		 2197 dd->disk.forced_ref = 1;
2198 dd->disk.forced_guid = 1;
2199 memset(dd->disk.vendor, ' ', 32);
2200 memcpy(dd->disk.vendor, "Linux", 5);
2201 memset(dd->disk.pad, 0xff, 442);
b2280677 2202 for (i = 0; i < ddf->max_part ; i++)
a322f70c
DW		 2203 dd->vlist[i] = NULL;
2204
2205 n = __be16_to_cpu(ddf->phys->used_pdes);
2206 pde = &ddf->phys->entries[n];
5575e7d9
NB		 2207 dd->pdnum = n;
2208
2cc2983d
N		 2209 if (st->update_tail) {
2210 int len = (sizeof(struct phys_disk) +
2211 sizeof(struct phys_disk_entry));
2212 struct phys_disk *pd;
2213
2214 pd = malloc(len);
2215 pd->magic = DDF_PHYS_RECORDS_MAGIC;
2216 pd->used_pdes = __cpu_to_be16(n);
2217 pde = &pd->entries[0];
2218 dd->mdupdate = pd;
2219 } else {
2220 n++;
2221 ddf->phys->used_pdes = __cpu_to_be16(n);
2222 }
a322f70c
DW		 2223
2224 memcpy(pde->guid, dd->disk.guid, DDF_GUID_LEN);
2225 pde->refnum = dd->disk.refnum;
5575e7d9 2226 pde->type = __cpu_to_be16(DDF_Forced_PD_GUID | DDF_Global_Spare);
a322f70c
DW		 2227 pde->state = __cpu_to_be16(DDF_Online);
2228 get_dev_size(fd, NULL, &size);
2229 /* We are required to reserve 32Meg, and record the size in sectors */
2230 pde->config_size = __cpu_to_be64( (size - 32*1024*1024) / 512);
2231 sprintf(pde->path, "%17.17s","Information: nil") ;
2232 memset(pde->pad, 0xff, 6);
2233
d2ca6449 2234 dd->size = size >> 9;
2cc2983d
N		 2235 if (st->update_tail) {
2236 dd->next = ddf->add_list;
2237 ddf->add_list = dd;
2238 } else {
2239 dd->next = ddf->dlist;
2240 ddf->dlist = dd;
2241 ddf->updates_pending = 1;
2242 }
f20c3968
DW		 2243
2244 return 0;
a322f70c
DW		 2245}
2246
2247/*
2248 * This is the write_init_super method for a ddf container. It is
2249 * called when creating a container or adding another device to a
2250 * container.
2251 */
2252
6416d527 2253static unsigned char null_conf[4096+512];
18a2f463 2254
7a7cc504 2255static int __write_init_super_ddf(struct supertype *st, int do_close)
a322f70c
DW		 2256{
2257
2258 struct ddf_super *ddf = st->sb;
2259 int i;
2260 struct dl *d;
2261 int n_config;
2262 int conf_size;
175593bf
DW		 2263 int attempts = 0;
2264 int successes = 0;
a322f70c
DW		 2265 unsigned long long size, sector;
2266
175593bf
DW		 2267 /* try to write updated metadata,
2268 * if we catch a failure move on to the next disk
2269 */
a322f70c
DW		 2270 for (d = ddf->dlist; d; d=d->next) {
2271 int fd = d->fd;
2272
2273 if (fd < 0)
2274 continue;
2275
175593bf 2276 attempts++;
a322f70c
DW		 2277 /* We need to fill in the primary, (secondary) and workspace
2278 * lba's in the headers, set their checksums,
2279 * Also checksum phys, virt....
2280 *
2281 * Then write everything out, finally the anchor is written.
2282 */
2283 get_dev_size(fd, NULL, &size);
2284 size /= 512;
2285 ddf->anchor.workspace_lba = __cpu_to_be64(size - 32*1024*2);
2286 ddf->anchor.primary_lba = __cpu_to_be64(size - 16*1024*2);
2287 ddf->anchor.seq = __cpu_to_be32(1);
2288 memcpy(&ddf->primary, &ddf->anchor, 512);
2289 memcpy(&ddf->secondary, &ddf->anchor, 512);
2290
2291 ddf->anchor.openflag = 0xFF; /* 'open' means nothing */
2292 ddf->anchor.seq = 0xFFFFFFFF; /* no sequencing in anchor */
2293 ddf->anchor.crc = calc_crc(&ddf->anchor, 512);
2294
2295 ddf->primary.openflag = 0;
2296 ddf->primary.type = DDF_HEADER_PRIMARY;
2297
2298 ddf->secondary.openflag = 0;
2299 ddf->secondary.type = DDF_HEADER_SECONDARY;
2300
2301 ddf->primary.crc = calc_crc(&ddf->primary, 512);
2302 ddf->secondary.crc = calc_crc(&ddf->secondary, 512);
2303
2304 sector = size - 16*1024*2;
2305 lseek64(fd, sector<<9, 0);
175593bf
DW		 2306 if (write(fd, &ddf->primary, 512) < 0)
2307 continue;
a322f70c
DW		 2308
2309 ddf->controller.crc = calc_crc(&ddf->controller, 512);
175593bf
DW		 2310 if (write(fd, &ddf->controller, 512) < 0)
2311 continue;
a322f70c
DW		 2312
2313 ddf->phys->crc = calc_crc(ddf->phys, ddf->pdsize);
2314
175593bf
DW		 2315 if (write(fd, ddf->phys, ddf->pdsize) < 0)
2316 continue;
a322f70c
DW		 2317
2318 ddf->virt->crc = calc_crc(ddf->virt, ddf->vdsize);
175593bf
DW		 2319 if (write(fd, ddf->virt, ddf->vdsize) < 0)
2320 continue;
a322f70c
DW		 2321
2322 /* Now write lots of config records. */
8c3b8c2c
NB		 2323 n_config = ddf->max_part;
2324 conf_size = ddf->conf_rec_len * 512;
a322f70c
DW		 2325 for (i = 0 ; i <= n_config ; i++) {
2326 struct vcl *c = d->vlist[i];
b2280677
NB		 2327 if (i == n_config)
2328 c = (struct vcl*)d->spare;
a322f70c
DW		 2329
2330 if (c) {
2331 c->conf.crc = calc_crc(&c->conf, conf_size);
175593bf
DW		 2332 if (write(fd, &c->conf, conf_size) < 0)
2333 break;
a322f70c 2334 } else {
6416d527 2335 char *null_aligned = (char*)((((unsigned long)null_conf)+511)&~511UL);
18a2f463
NB		 2336 if (null_conf[0] != 0xff)
2337 memset(null_conf, 0xff, sizeof(null_conf));
2338 int togo = conf_size;
6416d527 2339 while (togo > sizeof(null_conf)-512) {
175593bf
DW		 2340 if (write(fd, null_aligned, sizeof(null_conf)-512) < 0)
2341 break;
6416d527 2342 togo -= sizeof(null_conf)-512;
18a2f463 2343 }
175593bf
DW		 2344 if (write(fd, null_aligned, togo) < 0)
2345 break;
a322f70c
DW		 2346 }
2347 }
175593bf
DW		 2348 if (i <= n_config)
2349 continue;
a322f70c 2350 d->disk.crc = calc_crc(&d->disk, 512);
175593bf
DW		 2351 if (write(fd, &d->disk, 512) < 0)
2352 continue;
a322f70c
DW		 2353
2354 /* Maybe do the same for secondary */
2355
2356 lseek64(fd, (size-1)*512, SEEK_SET);
175593bf
DW		 2357 if (write(fd, &ddf->anchor, 512) < 0)
2358 continue;
2359 successes++;
2360 }
2361
2362 if (do_close)
2363 for (d = ddf->dlist; d; d=d->next) {
2364 close(d->fd);
7a7cc504
NB		 2365 d->fd = -1;
2366 }
175593bf
DW		 2367
2368 return attempts != successes;
a322f70c 2369}
7a7cc504
NB		 2370
2371static int write_init_super_ddf(struct supertype *st)
2372{
9b1fb677
DW		 2373 struct ddf_super *ddf = st->sb;
2374 struct vcl *currentconf = ddf->currentconf;
2375
2376 /* we are done with currentconf reset it to point st at the container */
2377 ddf->currentconf = NULL;
edd8d13c
NB		 2378
2379 if (st->update_tail) {
2380 /* queue the virtual_disk and vd_config as metadata updates */
2381 struct virtual_disk *vd;
2382 struct vd_config *vc;
edd8d13c
NB		 2383 int len;
2384
9b1fb677 2385 if (!currentconf) {
2cc2983d
N		 2386 int len = (sizeof(struct phys_disk) +
2387 sizeof(struct phys_disk_entry));
2388
2389 /* adding a disk to the container. */
2390 if (!ddf->add_list)
2391 return 0;
2392
2393 append_metadata_update(st, ddf->add_list->mdupdate, len);
2394 ddf->add_list->mdupdate = NULL;
2395 return 0;
2396 }
2397
2398 /* Newly created VD */
2399
edd8d13c
NB		 2400 /* First the virtual disk. We have a slightly fake header */
2401 len = sizeof(struct virtual_disk) + sizeof(struct virtual_entry);
2402 vd = malloc(len);
2403 *vd = *ddf->virt;
9b1fb677
DW		 2404 vd->entries[0] = ddf->virt->entries[currentconf->vcnum];
2405 vd->populated_vdes = __cpu_to_be16(currentconf->vcnum);
edd8d13c
NB		 2406 append_metadata_update(st, vd, len);
2407
2408 /* Then the vd_config */
2409 len = ddf->conf_rec_len * 512;
2410 vc = malloc(len);
9b1fb677 2411 memcpy(vc, &currentconf->conf, len);
edd8d13c
NB		 2412 append_metadata_update(st, vc, len);
2413
2414 /* FIXME I need to close the fds! */
2415 return 0;
d682f344
N		 2416 } else {
2417 struct dl *d;
2418 for (d = ddf->dlist; d; d=d->next)
2419 while (Kill(d->devname, NULL, 0, 1, 1) == 0);
edd8d13c 2420 return __write_init_super_ddf(st, 1);
d682f344 2421 }
7a7cc504
NB		 2422}
2423
a322f70c
DW		 2424#endif
2425
2426static __u64 avail_size_ddf(struct supertype *st, __u64 devsize)
2427{
2428 /* We must reserve the last 32Meg */
2429 if (devsize <= 32*1024*2)
2430 return 0;
2431 return devsize - 32*1024*2;
2432}
2433
2434#ifndef MDASSEMBLE
8592f29d
N		 2435
2436static int reserve_space(struct supertype *st, int raiddisks,
2437 unsigned long long size, int chunk,
2438 unsigned long long *freesize)
2439{
2440 /* Find 'raiddisks' spare extents at least 'size' big (but
2441 * only caring about multiples of 'chunk') and remember
2442 * them.
2443 * If the cannot be found, fail.
2444 */
2445 struct dl *dl;
2446 struct ddf_super *ddf = st->sb;
2447 int cnt = 0;
2448
2449 for (dl = ddf->dlist; dl ; dl=dl->next) {
2450 dl->raiddisk = -1;
2451 dl->esize = 0;
2452 }
2453 /* Now find largest extent on each device */
2454 for (dl = ddf->dlist ; dl ; dl=dl->next) {
2455 struct extent *e = get_extents(ddf, dl);
2456 unsigned long long pos = 0;
2457 int i = 0;
2458 int found = 0;
2459 unsigned long long minsize = size;
2460
2461 if (size == 0)
2462 minsize = chunk;
2463
2464 if (!e)
2465 continue;
2466 do {
2467 unsigned long long esize;
2468 esize = e[i].start - pos;
2469 if (esize >= minsize) {
2470 found = 1;
2471 minsize = esize;
2472 }
2473 pos = e[i].start + e[i].size;
2474 i++;
2475 } while (e[i-1].size);
2476 if (found) {
2477 cnt++;
2478 dl->esize = minsize;
2479 }
2480 free(e);
2481 }
2482 if (cnt < raiddisks) {
2483 fprintf(stderr, Name ": not enough devices with space to create array.\n");
2484 return 0; /* No enough free spaces large enough */
2485 }
2486 if (size == 0) {
2487 /* choose the largest size of which there are at least 'raiddisk' */
2488 for (dl = ddf->dlist ; dl ; dl=dl->next) {
2489 struct dl *dl2;
2490 if (dl->esize <= size)
2491 continue;
2492 /* This is bigger than 'size', see if there are enough */
2493 cnt = 0;
2494 for (dl2 = dl; dl2 ; dl2=dl2->next)
2495 if (dl2->esize >= dl->esize)
2496 cnt++;
2497 if (cnt >= raiddisks)
2498 size = dl->esize;
2499 }
2500 if (chunk) {
2501 size = size / chunk;
2502 size *= chunk;
2503 }
2504 *freesize = size;
2505 if (size < 32) {
2506 fprintf(stderr, Name ": not enough spare devices to create array.\n");
2507 return 0;
2508 }
2509 }
2510 /* We have a 'size' of which there are enough spaces.
2511 * We simply do a first-fit */
2512 cnt = 0;
2513 for (dl = ddf->dlist ; dl && cnt < raiddisks ; dl=dl->next) {
2514 if (dl->esize < size)
2515 continue;
2516
2517 dl->raiddisk = cnt;
2518 cnt++;
2519 }
2520 return 1;
2521}
2522
2523
2524
2c514b71
NB		 2525static int
2526validate_geometry_ddf_container(struct supertype *st,
2527 int level, int layout, int raiddisks,
2528 int chunk, unsigned long long size,
2529 char *dev, unsigned long long *freesize,
2530 int verbose);
78e44928
NB		 2531
2532static int validate_geometry_ddf_bvd(struct supertype *st,
2533 int level, int layout, int raiddisks,
2534 int chunk, unsigned long long size,
2c514b71
NB		 2535 char *dev, unsigned long long *freesize,
2536 int verbose);
78e44928
NB		 2537
2538static int validate_geometry_ddf(struct supertype *st,
2c514b71
NB		 2539 int level, int layout, int raiddisks,
2540 int chunk, unsigned long long size,
2541 char *dev, unsigned long long *freesize,
2542 int verbose)
a322f70c
DW		 2543{
2544 int fd;
2545 struct mdinfo *sra;
2546 int cfd;
2547
2548 /* ddf potentially supports lots of things, but it depends on
2549 * what devices are offered (and maybe kernel version?)
2550 * If given unused devices, we will make a container.
2551 * If given devices in a container, we will make a BVD.
2552 * If given BVDs, we make an SVD, changing all the GUIDs in the process.
2553 */
2554
2555 if (level == LEVEL_CONTAINER) {
78e44928
NB		 2556 /* Must be a fresh device to add to a container */
2557 return validate_geometry_ddf_container(st, level, layout,
2c514b71
NB		 2558 raiddisks, chunk,
2559 size, dev, freesize,
2560 verbose);
5f8097be
NB		 2561 }
2562
78e44928
NB		 2563 if (!dev) {
2564 /* Initial sanity check. Exclude illegal levels. */
2565 int i;
2566 for (i=0; ddf_level_num[i].num1 != MAXINT; i++)
2567 if (ddf_level_num[i].num2 == level)
2568 break;
b42f577a
N		 2569 if (ddf_level_num[i].num1 == MAXINT) {
2570 if (verbose)
2571 fprintf(stderr, Name ": DDF does not support level %d arrays\n",
2572 level);
78e44928 2573 return 0;
b42f577a 2574 }
78e44928 2575 /* Should check layout? etc */
8592f29d
N		 2576
2577 if (st->sb && freesize) {
2578 /* --create was given a container to create in.
2579 * So we need to check that there are enough
2580 * free spaces and return the amount of space.
2581 * We may as well remember which drives were
2582 * chosen so that add_to_super/getinfo_super
2583 * can return them.
2584 */
2585 return reserve_space(st, raiddisks, size, chunk, freesize);
2586 }
a322f70c 2587 return 1;
78e44928 2588 }
a322f70c 2589
8592f29d
N		 2590 if (st->sb) {
2591 /* A container has already been opened, so we are
2592 * creating in there. Maybe a BVD, maybe an SVD.
2593 * Should make a distinction one day.
2594 */
2595 return validate_geometry_ddf_bvd(st, level, layout, raiddisks,
2596 chunk, size, dev, freesize,
2597 verbose);
2598 }
78e44928
NB		 2599 /* This is the first device for the array.
2600 * If it is a container, we read it in and do automagic allocations,
2601 * no other devices should be given.
2602 * Otherwise it must be a member device of a container, and we
2603 * do manual allocation.
2604 * Later we should check for a BVD and make an SVD.
a322f70c 2605 */
a322f70c
DW		 2606 fd = open(dev, O_RDONLY|O_EXCL, 0);
2607 if (fd >= 0) {
2608 sra = sysfs_read(fd, 0, GET_VERSION);
2609 close(fd);
2610 if (sra && sra->array.major_version == -1 &&
78e44928
NB		 2611 strcmp(sra->text_version, "ddf") == 0) {
2612
2613 /* load super */
2614 /* find space for 'n' devices. */
2615 /* remember the devices */
2616 /* Somehow return the fact that we have enough */
a322f70c
DW		 2617 }
2618
2c514b71
NB		 2619 if (verbose)
2620 fprintf(stderr,
2621 Name ": ddf: Cannot create this array "
b42f577a 2622 "on device %s - a container is required.\n",
2c514b71 2623 dev);
a322f70c
DW		 2624 return 0;
2625 }
2626 if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) {
2c514b71
NB		 2627 if (verbose)
2628 fprintf(stderr, Name ": ddf: Cannot open %s: %s\n",
2629 dev, strerror(errno));
a322f70c
DW		 2630 return 0;
2631 }
2632 /* Well, it is in use by someone, maybe a 'ddf' container. */
2633 cfd = open_container(fd);
2634 if (cfd < 0) {
2635 close(fd);
2c514b71
NB		 2636 if (verbose)
2637 fprintf(stderr, Name ": ddf: Cannot use %s: %s\n",
2638 dev, strerror(EBUSY));
a322f70c
DW		 2639 return 0;
2640 }
2641 sra = sysfs_read(cfd, 0, GET_VERSION);
2642 close(fd);
2643 if (sra && sra->array.major_version == -1 &&
2644 strcmp(sra->text_version, "ddf") == 0) {
2645 /* This is a member of a ddf container. Load the container
2646 * and try to create a bvd
2647 */
2648 struct ddf_super *ddf;
a322f70c 2649 if (load_super_ddf_all(st, cfd, (void **)&ddf, NULL, 1) == 0) {
5f8097be 2650 st->sb = ddf;
2f6079dc 2651 st->container_dev = fd2devnum(cfd);
a322f70c 2652 close(cfd);
78e44928 2653 return validate_geometry_ddf_bvd(st, level, layout,
a322f70c 2654 raiddisks, chunk, size,
2c514b71
NB		 2655 dev, freesize,
2656 verbose);
a322f70c
DW		 2657 }
2658 close(cfd);
c42ec1ed
DW		 2659 } else /* device may belong to a different container */
2660 return 0;
2661
a322f70c
DW		 2662 return 1;
2663}
2664
2c514b71
NB		 2665static int
2666validate_geometry_ddf_container(struct supertype *st,
2667 int level, int layout, int raiddisks,
2668 int chunk, unsigned long long size,
2669 char *dev, unsigned long long *freesize,
2670 int verbose)
a322f70c
DW		 2671{
2672 int fd;
2673 unsigned long long ldsize;
2674
2675 if (level != LEVEL_CONTAINER)
2676 return 0;
2677 if (!dev)
2678 return 1;
2679
2680 fd = open(dev, O_RDONLY|O_EXCL, 0);
2681 if (fd < 0) {
2c514b71
NB		 2682 if (verbose)
2683 fprintf(stderr, Name ": ddf: Cannot open %s: %s\n",
2684 dev, strerror(errno));
a322f70c
DW		 2685 return 0;
2686 }
2687 if (!get_dev_size(fd, dev, &ldsize)) {
2688 close(fd);
2689 return 0;
2690 }
2691 close(fd);
2692
56aca704 2693 *freesize = avail_size_ddf(st, ldsize >> 9);
ea17e7aa
N		 2694 if (*freesize == 0)
2695 return 0;
a322f70c
DW		 2696
2697 return 1;
2698}
2699
78e44928
NB		 2700static int validate_geometry_ddf_bvd(struct supertype *st,
2701 int level, int layout, int raiddisks,
2702 int chunk, unsigned long long size,
2c514b71
NB		 2703 char *dev, unsigned long long *freesize,
2704 int verbose)
a322f70c
DW		 2705{
2706 struct stat stb;
2707 struct ddf_super *ddf = st->sb;
2708 struct dl *dl;
5f8097be
NB		 2709 unsigned long long pos = 0;
2710 unsigned long long maxsize;
2711 struct extent *e;
2712 int i;
a322f70c 2713 /* ddf/bvd supports lots of things, but not containers */
b42f577a
N		 2714 if (level == LEVEL_CONTAINER) {
2715 if (verbose)
2716 fprintf(stderr, Name ": DDF cannot create a container within an container\n");
a322f70c 2717 return 0;
b42f577a 2718 }
a322f70c
DW		 2719 /* We must have the container info already read in. */
2720 if (!ddf)
2721 return 0;
2722
5f8097be
NB		 2723 if (!dev) {
2724 /* General test: make sure there is space for
2725 * 'raiddisks' device extents of size 'size'.
2726 */
2727 unsigned long long minsize = size;
2728 int dcnt = 0;
2729 if (minsize == 0)
2730 minsize = 8;
2731 for (dl = ddf->dlist; dl ; dl = dl->next)
2732 {
2733 int found = 0;
7e1432fb 2734 pos = 0;
5f8097be
NB		 2735
2736 i = 0;
2737 e = get_extents(ddf, dl);
2738 if (!e) continue;
2739 do {
2740 unsigned long long esize;
2741 esize = e[i].start - pos;
2742 if (esize >= minsize)
2743 found = 1;
2744 pos = e[i].start + e[i].size;
2745 i++;
2746 } while (e[i-1].size);
2747 if (found)
2748 dcnt++;
2749 free(e);
2750 }
2751 if (dcnt < raiddisks) {
2c514b71
NB		 2752 if (verbose)
2753 fprintf(stderr,
2754 Name ": ddf: Not enough devices with "
2755 "space for this array (%d < %d)\n",
2756 dcnt, raiddisks);
5f8097be
NB		 2757 return 0;
2758 }
2759 return 1;
2760 }
a322f70c
DW		 2761 /* This device must be a member of the set */
2762 if (stat(dev, &stb) < 0)
2763 return 0;
2764 if ((S_IFMT & stb.st_mode) != S_IFBLK)
2765 return 0;
2766 for (dl = ddf->dlist ; dl ; dl = dl->next) {
2767 if (dl->major == major(stb.st_rdev) &&
2768 dl->minor == minor(stb.st_rdev))
2769 break;
2770 }
5f8097be 2771 if (!dl) {
2c514b71
NB		 2772 if (verbose)
2773 fprintf(stderr, Name ": ddf: %s is not in the "
2774 "same DDF set\n",
2775 dev);
5f8097be
NB		 2776 return 0;
2777 }
2778 e = get_extents(ddf, dl);
2779 maxsize = 0;
2780 i = 0;
2781 if (e) do {
2782 unsigned long long esize;
2783 esize = e[i].start - pos;
2784 if (esize >= maxsize)
2785 maxsize = esize;
2786 pos = e[i].start + e[i].size;
2787 i++;
2788 } while (e[i-1].size);
2789 *freesize = maxsize;
a322f70c
DW		 2790 // FIXME here I am
2791
2792 return 1;
2793}
59e36268 2794
a322f70c
DW		 2795static int load_super_ddf_all(struct supertype *st, int fd,
2796 void **sbp, char *devname, int keep_fd)
2797{
2798 struct mdinfo *sra;
2799 struct ddf_super *super;
2800 struct mdinfo *sd, *best = NULL;
2801 int bestseq = 0;
2802 int seq;
2803 char nm[20];
2804 int dfd;
dab4a513
DW		 2805 int devnum = fd2devnum(fd);
2806 enum sysfs_read_flags flags;
a322f70c 2807
dab4a513
DW		 2808 flags = GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE;
2809 if (mdmon_running(devnum))
2810 flags |= SKIP_GONE_DEVS;
2811
2812 sra = sysfs_read(fd, 0, flags);
a322f70c
DW		 2813 if (!sra)
2814 return 1;
2815 if (sra->array.major_version != -1 ||
2816 sra->array.minor_version != -2 ||
2817 strcmp(sra->text_version, "ddf") != 0)
2818 return 1;
2819
6416d527 2820 if (posix_memalign((void**)&super, 512, sizeof(*super)) != 0)
a322f70c 2821 return 1;
a2349791 2822 memset(super, 0, sizeof(*super));
a322f70c
DW		 2823
2824 /* first, try each device, and choose the best ddf */
2825 for (sd = sra->devs ; sd ; sd = sd->next) {
2826 int rv;
2827 sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor);
7a7cc504
NB		 2828 dfd = dev_open(nm, O_RDONLY);
2829 if (dfd < 0)
a322f70c
DW		 2830 return 2;
2831 rv = load_ddf_headers(dfd, super, NULL);
7a7cc504 2832 close(dfd);
a322f70c
DW		 2833 if (rv == 0) {
2834 seq = __be32_to_cpu(super->active->seq);
2835 if (super->active->openflag)
2836 seq--;
2837 if (!best || seq > bestseq) {
2838 bestseq = seq;
2839 best = sd;
2840 }
2841 }
2842 }
2843 if (!best)
2844 return 1;
2845 /* OK, load this ddf */
2846 sprintf(nm, "%d:%d", best->disk.major, best->disk.minor);
2847 dfd = dev_open(nm, O_RDONLY);
7a7cc504 2848 if (dfd < 0)
a322f70c
DW		 2849 return 1;
2850 load_ddf_headers(dfd, super, NULL);
2851 load_ddf_global(dfd, super, NULL);
2852 close(dfd);
2853 /* Now we need the device-local bits */
2854 for (sd = sra->devs ; sd ; sd = sd->next) {
3d2c4fc7
DW		 2855 int rv;
2856
a322f70c 2857 sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor);
5f8097be 2858 dfd = dev_open(nm, keep_fd? O_RDWR : O_RDONLY);
7a7cc504 2859 if (dfd < 0)
a322f70c 2860 return 2;
3d2c4fc7
DW		 2861 rv = load_ddf_headers(dfd, super, NULL);
2862 if (rv == 0)
2863 rv = load_ddf_local(dfd, super, NULL, keep_fd);
5f8097be 2864 if (!keep_fd) close(dfd);
3d2c4fc7
DW		 2865 if (rv)
2866 return 1;
a322f70c 2867 }
f7e7067b
NB		 2868 if (st->subarray[0]) {
2869 struct vcl *v;
2870
2871 for (v = super->conflist; v; v = v->next)
2872 if (v->vcnum == atoi(st->subarray))
d2ca6449
NB		 2873 super->currentconf = v;
2874 if (!super->currentconf)
f7e7067b
NB		 2875 return 1;
2876 }
a322f70c
DW		 2877 *sbp = super;
2878 if (st->ss == NULL) {
78e44928 2879 st->ss = &super_ddf;
a322f70c
DW		 2880 st->minor_version = 0;
2881 st->max_devs = 512;
75aa18b5 2882 st->container_dev = fd2devnum(fd);
a322f70c 2883 }
352452c3 2884 st->loaded_container = 1;
a322f70c
DW		 2885 return 0;
2886}
0e600426 2887#endif /* MDASSEMBLE */
a322f70c 2888
598f0d58
NB		 2889static struct mdinfo *container_content_ddf(struct supertype *st)
2890{
2891 /* Given a container loaded by load_super_ddf_all,
2892 * extract information about all the arrays into
2893 * an mdinfo tree.
2894 *
2895 * For each vcl in conflist: create an mdinfo, fill it in,
2896 * then look for matching devices (phys_refnum) in dlist
2897 * and create appropriate device mdinfo.
2898 */
2899 struct ddf_super *ddf = st->sb;
2900 struct mdinfo *rest = NULL;
2901 struct vcl *vc;
2902
2903 for (vc = ddf->conflist ; vc ; vc=vc->next)
2904 {
598f0d58 2905 int i;
db42fa9b 2906 int j;
598f0d58
NB		 2907 struct mdinfo *this;
2908 this = malloc(sizeof(*this));
2909 memset(this, 0, sizeof(*this));
2910 this->next = rest;
2911 rest = this;
2912
598f0d58
NB		 2913 this->array.level = map_num1(ddf_level_num, vc->conf.prl);
2914 this->array.raid_disks =
2915 __be16_to_cpu(vc->conf.prim_elmnt_count);
60f18132
NB		 2916 this->array.layout = rlq_to_layout(vc->conf.rlq, vc->conf.prl,
2917 this->array.raid_disks);
598f0d58 2918 this->array.md_minor = -1;
f35f2525
N		 2919 this->array.major_version = -1;
2920 this->array.minor_version = -2;
598f0d58
NB		 2921 this->array.ctime = DECADE +
2922 __be32_to_cpu(*(__u32*)(vc->conf.guid+16));
2923 this->array.utime = DECADE +
2924 __be32_to_cpu(vc->conf.timestamp);
2925 this->array.chunk_size = 512 << vc->conf.chunk_shift;
2926
59e36268 2927 i = vc->vcnum;
7a7cc504
NB		 2928 if ((ddf->virt->entries[i].state & DDF_state_inconsistent) ||
2929 (ddf->virt->entries[i].init_state & DDF_initstate_mask) !=
ed9d66aa 2930 DDF_init_full) {
598f0d58 2931 this->array.state = 0;
ed9d66aa
NB		 2932 this->resync_start = 0;
2933 } else {
598f0d58 2934 this->array.state = 1;
b7528a20 2935 this->resync_start = MaxSector;
ed9d66aa 2936 }
db42fa9b
N		 2937 memcpy(this->name, ddf->virt->entries[i].name, 16);
2938 this->name[16]=0;
2939 for(j=0; j<16; j++)
2940 if (this->name[j] == ' ')
2941 this->name[j] = 0;
598f0d58
NB		 2942
2943 memset(this->uuid, 0, sizeof(this->uuid));
2944 this->component_size = __be64_to_cpu(vc->conf.blocks);
2945 this->array.size = this->component_size / 2;
5f2aace8 2946 this->container_member = i;
598f0d58 2947
c5afc314
N		 2948 ddf->currentconf = vc;
2949 uuid_from_super_ddf(st, this->uuid);
2950 ddf->currentconf = NULL;
2951
60f18132
NB		 2952 sprintf(this->text_version, "/%s/%d",
2953 devnum2devname(st->container_dev),
2954 this->container_member);
2955
8c3b8c2c 2956 for (i=0 ; i < ddf->mppe ; i++) {
598f0d58
NB		 2957 struct mdinfo *dev;
2958 struct dl *d;
2959
2960 if (vc->conf.phys_refnum[i] == 0xFFFFFFFF)
2961 continue;
2962
c0d50ca5
N		 2963 this->array.working_disks++;
2964
598f0d58
NB		 2965 for (d = ddf->dlist; d ; d=d->next)
2966 if (d->disk.refnum == vc->conf.phys_refnum[i])
2967 break;
2968 if (d == NULL)
bc17324f
N		 2969 /* Haven't found that one yet, maybe there are others */
2970 continue;
2971
598f0d58
NB		 2972 dev = malloc(sizeof(*dev));
2973 memset(dev, 0, sizeof(*dev));
2974 dev->next = this->devs;
2975 this->devs = dev;
2976
2977 dev->disk.number = __be32_to_cpu(d->disk.refnum);
2978 dev->disk.major = d->major;
2979 dev->disk.minor = d->minor;
2980 dev->disk.raid_disk = i;
2981 dev->disk.state = (1<<MD_DISK_SYNC)|(1<<MD_DISK_ACTIVE);
d23534e4 2982 dev->recovery_start = MaxSector;
598f0d58 2983
120f7677
NB		 2984 dev->events = __be32_to_cpu(ddf->primary.seq);
2985 dev->data_offset = __be64_to_cpu(vc->lba_offset[i]);
598f0d58
NB		 2986 dev->component_size = __be64_to_cpu(vc->conf.blocks);
2987 if (d->devname)
2988 strcpy(dev->name, d->devname);
2989 }
2990 }
2991 return rest;
2992}
2993
955e9ea1 2994static int store_super_ddf(struct supertype *st, int fd)
a322f70c 2995{
955e9ea1 2996 struct ddf_super *ddf = st->sb;
a322f70c 2997 unsigned long long dsize;
6416d527 2998 void *buf;
3d2c4fc7 2999 int rc;
a322f70c 3000
955e9ea1
DW		 3001 if (!ddf)
3002 return 1;
3003
3004 /* ->dlist and ->conflist will be set for updates, currently not
3005 * supported
3006 */
3007 if (ddf->dlist || ddf->conflist)
3008 return 1;
3009
a322f70c
DW		 3010 if (!get_dev_size(fd, NULL, &dsize))
3011 return 1;
3012
3d2c4fc7
DW		 3013 if (posix_memalign(&buf, 512, 512) != 0)
3014 return 1;
6416d527
NB		 3015 memset(buf, 0, 512);
3016
a322f70c 3017 lseek64(fd, dsize-512, 0);
3d2c4fc7 3018 rc = write(fd, buf, 512);
6416d527 3019 free(buf);
3d2c4fc7
DW		 3020 if (rc < 0)
3021 return 1;
a322f70c
DW		 3022 return 0;
3023}
3024
a19c88b8
NB		 3025static int compare_super_ddf(struct supertype *st, struct supertype *tst)
3026{
3027 /*
3028 * return:
3029 * 0 same, or first was empty, and second was copied
3030 * 1 second had wrong number
3031 * 2 wrong uuid
3032 * 3 wrong other info
3033 */
3034 struct ddf_super *first = st->sb;
3035 struct ddf_super *second = tst->sb;
3036
3037 if (!first) {
3038 st->sb = tst->sb;
3039 tst->sb = NULL;
3040 return 0;
3041 }
3042
3043 if (memcmp(first->anchor.guid, second->anchor.guid, DDF_GUID_LEN) != 0)
3044 return 2;
3045
3046 /* FIXME should I look at anything else? */
3047 return 0;
3048}
3049
0e600426 3050#ifndef MDASSEMBLE
4e5528c6
NB		 3051/*
3052 * A new array 'a' has been started which claims to be instance 'inst'
3053 * within container 'c'.
3054 * We need to confirm that the array matches the metadata in 'c' so
3055 * that we don't corrupt any metadata.
3056 */
cba0191b 3057static int ddf_open_new(struct supertype *c, struct active_array *a, char *inst)
549e9569 3058{
2c514b71 3059 dprintf("ddf: open_new %s\n", inst);
cba0191b 3060 a->info.container_member = atoi(inst);
549e9569
NB		 3061 return 0;
3062}
3063
4e5528c6
NB		 3064/*
3065 * The array 'a' is to be marked clean in the metadata.
ed9d66aa 3066 * If '->resync_start' is not ~(unsigned long long)0, then the array is only
4e5528c6
NB		 3067 * clean up to the point (in sectors). If that cannot be recorded in the
3068 * metadata, then leave it as dirty.
3069 *
3070 * For DDF, we need to clear the DDF_state_inconsistent bit in the
3071 * !global! virtual_disk.virtual_entry structure.
3072 */
01f157d7 3073static int ddf_set_array_state(struct active_array *a, int consistent)
549e9569 3074{
4e5528c6
NB		 3075 struct ddf_super *ddf = a->container->sb;
3076 int inst = a->info.container_member;
18a2f463 3077 int old = ddf->virt->entries[inst].state;
01f157d7
N		 3078 if (consistent == 2) {
3079 /* Should check if a recovery should be started FIXME */
3080 consistent = 1;
b7941fd6 3081 if (!is_resync_complete(&a->info))
01f157d7
N		 3082 consistent = 0;
3083 }
ed9d66aa
NB		 3084 if (consistent)
3085 ddf->virt->entries[inst].state &= ~DDF_state_inconsistent;
3086 else
4e5528c6 3087 ddf->virt->entries[inst].state |= DDF_state_inconsistent;
18a2f463
NB		 3088 if (old != ddf->virt->entries[inst].state)
3089 ddf->updates_pending = 1;
3090
3091 old = ddf->virt->entries[inst].init_state;
ed9d66aa 3092 ddf->virt->entries[inst].init_state &= ~DDF_initstate_mask;
b7941fd6 3093 if (is_resync_complete(&a->info))
ed9d66aa 3094 ddf->virt->entries[inst].init_state |= DDF_init_full;
b7941fd6 3095 else if (a->info.resync_start == 0)
ed9d66aa 3096 ddf->virt->entries[inst].init_state |= DDF_init_not;
4e5528c6 3097 else
ed9d66aa 3098 ddf->virt->entries[inst].init_state |= DDF_init_quick;
18a2f463
NB		 3099 if (old != ddf->virt->entries[inst].init_state)
3100 ddf->updates_pending = 1;
ed9d66aa 3101
2c514b71 3102 dprintf("ddf mark %d %s %llu\n", inst, consistent?"clean":"dirty",
b7941fd6 3103 a->info.resync_start);
01f157d7 3104 return consistent;
fd7cde1b
DW		 3105}
3106
7a7cc504
NB		 3107/*
3108 * The state of each disk is stored in the global phys_disk structure
3109 * in phys_disk.entries[n].state.
3110 * This makes various combinations awkward.
3111 * - When a device fails in any array, it must be failed in all arrays
3112 * that include a part of this device.
3113 * - When a component is rebuilding, we cannot include it officially in the
3114 * array unless this is the only array that uses the device.
3115 *
3116 * So: when transitioning:
3117 * Online -> failed, just set failed flag. monitor will propagate
3118 * spare -> online, the device might need to be added to the array.
3119 * spare -> failed, just set failed. Don't worry if in array or not.
3120 */
8d45d196 3121static void ddf_set_disk(struct active_array *a, int n, int state)
549e9569 3122{
7a7cc504
NB		 3123 struct ddf_super *ddf = a->container->sb;
3124 int inst = a->info.container_member;
3125 struct vd_config *vc = find_vdcr(ddf, inst);
3126 int pd = find_phys(ddf, vc->phys_refnum[n]);
3127 int i, st, working;
3128
3129 if (vc == NULL) {
2c514b71 3130 dprintf("ddf: cannot find instance %d!!\n", inst);
7a7cc504
NB		 3131 return;
3132 }
3133 if (pd < 0) {
3134 /* disk doesn't currently exist. If it is now in_sync,
3135 * insert it. */
3136 if ((state & DS_INSYNC) && ! (state & DS_FAULTY)) {
3137 /* Find dev 'n' in a->info->devs, determine the
3138 * ddf refnum, and set vc->phys_refnum and update
3139 * phys->entries[]
3140 */
3141 /* FIXME */
3142 }
3143 } else {
18a2f463 3144 int old = ddf->phys->entries[pd].state;
7a7cc504
NB		 3145 if (state & DS_FAULTY)
3146 ddf->phys->entries[pd].state |= __cpu_to_be16(DDF_Failed);
3147 if (state & DS_INSYNC) {
3148 ddf->phys->entries[pd].state |= __cpu_to_be16(DDF_Online);
3149 ddf->phys->entries[pd].state &= __cpu_to_be16(~DDF_Rebuilding);
3150 }
18a2f463
NB		 3151 if (old != ddf->phys->entries[pd].state)
3152 ddf->updates_pending = 1;
7a7cc504
NB		 3153 }
3154
2c514b71 3155 dprintf("ddf: set_disk %d to %x\n", n, state);
7e1432fb 3156
7a7cc504
NB		 3157 /* Now we need to check the state of the array and update
3158 * virtual_disk.entries[n].state.
3159 * It needs to be one of "optimal", "degraded", "failed".
3160 * I don't understand 'deleted' or 'missing'.
3161 */
3162 working = 0;
3163 for (i=0; i < a->info.array.raid_disks; i++) {
3164 pd = find_phys(ddf, vc->phys_refnum[i]);
3165 if (pd < 0)
3166 continue;
57632f4a
NB		 3167 st = __be16_to_cpu(ddf->phys->entries[pd].state);
3168 if ((st & (DDF_Online|DDF_Failed|DDF_Rebuilding))
7a7cc504
NB		 3169 == DDF_Online)
3170 working++;
3171 }
3172 state = DDF_state_degraded;
3173 if (working == a->info.array.raid_disks)
3174 state = DDF_state_optimal;
3175 else switch(vc->prl) {
3176 case DDF_RAID0:
3177 case DDF_CONCAT:
3178 case DDF_JBOD:
3179 state = DDF_state_failed;
3180 break;
3181 case DDF_RAID1:
3182 if (working == 0)
3183 state = DDF_state_failed;
3184 break;
3185 case DDF_RAID4:
3186 case DDF_RAID5:
3187 if (working < a->info.array.raid_disks-1)
3188 state = DDF_state_failed;
3189 break;
3190 case DDF_RAID6:
3191 if (working < a->info.array.raid_disks-2)
3192 state = DDF_state_failed;
3193 else if (working == a->info.array.raid_disks-1)
3194 state = DDF_state_part_optimal;
3195 break;
3196 }
3197
18a2f463
NB		 3198 if (ddf->virt->entries[inst].state !=
3199 ((ddf->virt->entries[inst].state & ~DDF_state_mask)
3200 | state)) {
3201
3202 ddf->virt->entries[inst].state =
3203 (ddf->virt->entries[inst].state & ~DDF_state_mask)
3204 | state;
3205 ddf->updates_pending = 1;
3206 }
7a7cc504 3207
549e9569
NB		 3208}
3209
2e735d19 3210static void ddf_sync_metadata(struct supertype *st)
549e9569 3211{
7a7cc504
NB		 3212
3213 /*
3214 * Write all data to all devices.
3215 * Later, we might be able to track whether only local changes
3216 * have been made, or whether any global data has been changed,
3217 * but ddf is sufficiently weird that it probably always
3218 * changes global data ....
3219 */
18a2f463
NB		 3220 struct ddf_super *ddf = st->sb;
3221 if (!ddf->updates_pending)
3222 return;
3223 ddf->updates_pending = 0;
2e735d19 3224 __write_init_super_ddf(st, 0);
2c514b71 3225 dprintf("ddf: sync_metadata\n");
549e9569
NB		 3226}
3227
88c164f4
NB		 3228static void ddf_process_update(struct supertype *st,
3229 struct metadata_update *update)
3230{
3231 /* Apply this update to the metadata.
3232 * The first 4 bytes are a DDF_*_MAGIC which guides
3233 * our actions.
3234 * Possible update are:
3235 * DDF_PHYS_RECORDS_MAGIC
3236 * Add a new physical device. Changes to this record
3237 * only happen implicitly.
3238 * used_pdes is the device number.
3239 * DDF_VIRT_RECORDS_MAGIC
3240 * Add a new VD. Possibly also change the 'access' bits.
3241 * populated_vdes is the entry number.
3242 * DDF_VD_CONF_MAGIC
3243 * New or updated VD. the VIRT_RECORD must already
3244 * exist. For an update, phys_refnum and lba_offset
3245 * (at least) are updated, and the VD_CONF must
3246 * be written to precisely those devices listed with
3247 * a phys_refnum.
3248 * DDF_SPARE_ASSIGN_MAGIC
3249 * replacement Spare Assignment Record... but for which device?
3250 *
3251 * So, e.g.:
3252 * - to create a new array, we send a VIRT_RECORD and
3253 * a VD_CONF. Then assemble and start the array.
3254 * - to activate a spare we send a VD_CONF to add the phys_refnum
3255 * and offset. This will also mark the spare as active with
3256 * a spare-assignment record.
3257 */
3258 struct ddf_super *ddf = st->sb;
3259 __u32 *magic = (__u32*)update->buf;
3260 struct phys_disk *pd;
3261 struct virtual_disk *vd;
3262 struct vd_config *vc;
3263 struct vcl *vcl;
3264 struct dl *dl;
3265 int mppe;
3266 int ent;
3267
2c514b71 3268 dprintf("Process update %x\n", *magic);
7e1432fb 3269
88c164f4
NB		 3270 switch (*magic) {
3271 case DDF_PHYS_RECORDS_MAGIC:
3272
3273 if (update->len != (sizeof(struct phys_disk) +
3274 sizeof(struct phys_disk_entry)))
3275 return;
3276 pd = (struct phys_disk*)update->buf;
3277
3278 ent = __be16_to_cpu(pd->used_pdes);
3279 if (ent >= __be16_to_cpu(ddf->phys->max_pdes))
3280 return;
3281 if (!all_ff(ddf->phys->entries[ent].guid))
3282 return;
3283 ddf->phys->entries[ent] = pd->entries[0];
3284 ddf->phys->used_pdes = __cpu_to_be16(1 +
3285 __be16_to_cpu(ddf->phys->used_pdes));
18a2f463 3286 ddf->updates_pending = 1;
2cc2983d
N		 3287 if (ddf->add_list) {
3288 struct active_array *a;
3289 struct dl *al = ddf->add_list;
3290 ddf->add_list = al->next;
3291
3292 al->next = ddf->dlist;
3293 ddf->dlist = al;
3294
3295 /* As a device has been added, we should check
3296 * for any degraded devices that might make
3297 * use of this spare */
3298 for (a = st->arrays ; a; a=a->next)
3299 a->check_degraded = 1;
3300 }
88c164f4
NB		 3301 break;
3302
3303 case DDF_VIRT_RECORDS_MAGIC:
3304
3305 if (update->len != (sizeof(struct virtual_disk) +
3306 sizeof(struct virtual_entry)))
3307 return;
3308 vd = (struct virtual_disk*)update->buf;
3309
3310 ent = __be16_to_cpu(vd->populated_vdes);
3311 if (ent >= __be16_to_cpu(ddf->virt->max_vdes))
3312 return;
3313 if (!all_ff(ddf->virt->entries[ent].guid))
3314 return;
3315 ddf->virt->entries[ent] = vd->entries[0];
3316 ddf->virt->populated_vdes = __cpu_to_be16(1 +
3317 __be16_to_cpu(ddf->virt->populated_vdes));
18a2f463 3318 ddf->updates_pending = 1;
88c164f4
NB		 3319 break;
3320
3321 case DDF_VD_CONF_MAGIC:
2c514b71 3322 dprintf("len %d %d\n", update->len, ddf->conf_rec_len);
88c164f4
NB		 3323
3324 mppe = __be16_to_cpu(ddf->anchor.max_primary_element_entries);
edd8d13c 3325 if (update->len != ddf->conf_rec_len * 512)
88c164f4
NB		 3326 return;
3327 vc = (struct vd_config*)update->buf;
3328 for (vcl = ddf->conflist; vcl ; vcl = vcl->next)
3329 if (memcmp(vcl->conf.guid, vc->guid, DDF_GUID_LEN) == 0)
3330 break;
2c514b71 3331 dprintf("vcl = %p\n", vcl);
88c164f4
NB		 3332 if (vcl) {
3333 /* An update, just copy the phys_refnum and lba_offset
3334 * fields
3335 */
3336 memcpy(vcl->conf.phys_refnum, vc->phys_refnum,
3337 mppe * (sizeof(__u32) + sizeof(__u64)));
3338 } else {
3339 /* A new VD_CONF */
e6b9548d
DW		 3340 if (!update->space)
3341 return;
88c164f4
NB		 3342 vcl = update->space;
3343 update->space = NULL;
3344 vcl->next = ddf->conflist;
edd8d13c 3345 memcpy(&vcl->conf, vc, update->len);
88c164f4
NB		 3346 vcl->lba_offset = (__u64*)
3347 &vcl->conf.phys_refnum[mppe];
3348 ddf->conflist = vcl;
3349 }
3350 /* Now make sure vlist is correct for each dl. */
3351 for (dl = ddf->dlist; dl; dl = dl->next) {
3352 int dn;
3353 int vn = 0;
3354 for (vcl = ddf->conflist; vcl ; vcl = vcl->next)
3355 for (dn=0; dn < ddf->mppe ; dn++)
3356 if (vcl->conf.phys_refnum[dn] ==
3357 dl->disk.refnum) {
2c514b71
NB		 3358 dprintf("dev %d has %p at %d\n",
3359 dl->pdnum, vcl, vn);
88c164f4
NB		 3360 dl->vlist[vn++] = vcl;
3361 break;
3362 }
3363 while (vn < ddf->max_part)
3364 dl->vlist[vn++] = NULL;
7e1432fb
NB		 3365 if (dl->vlist[0]) {
3366 ddf->phys->entries[dl->pdnum].type &=
3367 ~__cpu_to_be16(DDF_Global_Spare);
3368 ddf->phys->entries[dl->pdnum].type |=
3369 __cpu_to_be16(DDF_Active_in_VD);
3370 }
3371 if (dl->spare) {
3372 ddf->phys->entries[dl->pdnum].type &=
3373 ~__cpu_to_be16(DDF_Global_Spare);
3374 ddf->phys->entries[dl->pdnum].type |=
3375 __cpu_to_be16(DDF_Spare);
3376 }
3377 if (!dl->vlist[0] && !dl->spare) {
3378 ddf->phys->entries[dl->pdnum].type |=
3379 __cpu_to_be16(DDF_Global_Spare);
3380 ddf->phys->entries[dl->pdnum].type &=
3381 ~__cpu_to_be16(DDF_Spare |
3382 DDF_Active_in_VD);
3383 }
88c164f4 3384 }
18a2f463 3385 ddf->updates_pending = 1;
88c164f4
NB		 3386 break;
3387 case DDF_SPARE_ASSIGN_MAGIC:
3388 default: break;
3389 }
3390}
3391
edd8d13c
NB		 3392static void ddf_prepare_update(struct supertype *st,
3393 struct metadata_update *update)
3394{
3395 /* This update arrived at managemon.
3396 * We are about to pass it to monitor.
3397 * If a malloc is needed, do it here.
3398 */
3399 struct ddf_super *ddf = st->sb;
3400 __u32 *magic = (__u32*)update->buf;
3401 if (*magic == DDF_VD_CONF_MAGIC)
e6b9548d 3402 if (posix_memalign(&update->space, 512,
6416d527 3403 offsetof(struct vcl, conf)
e6b9548d
DW		 3404 + ddf->conf_rec_len * 512) != 0)
3405 update->space = NULL;
edd8d13c
NB		 3406}
3407
7e1432fb
NB		 3408/*
3409 * Check if the array 'a' is degraded but not failed.
3410 * If it is, find as many spares as are available and needed and
3411 * arrange for their inclusion.
3412 * We only choose devices which are not already in the array,
3413 * and prefer those with a spare-assignment to this array.
3414 * otherwise we choose global spares - assuming always that
3415 * there is enough room.
3416 * For each spare that we assign, we return an 'mdinfo' which
3417 * describes the position for the device in the array.
3418 * We also add to 'updates' a DDF_VD_CONF_MAGIC update with
3419 * the new phys_refnum and lba_offset values.
3420 *
3421 * Only worry about BVDs at the moment.
3422 */
3423static struct mdinfo *ddf_activate_spare(struct active_array *a,
3424 struct metadata_update **updates)
3425{
3426 int working = 0;
3427 struct mdinfo *d;
3428 struct ddf_super *ddf = a->container->sb;
3429 int global_ok = 0;
3430 struct mdinfo *rv = NULL;
3431 struct mdinfo *di;
3432 struct metadata_update *mu;
3433 struct dl *dl;
3434 int i;
3435 struct vd_config *vc;
3436 __u64 *lba;
3437
7e1432fb
NB		 3438 for (d = a->info.devs ; d ; d = d->next) {
3439 if ((d->curr_state & DS_FAULTY) &&
3440 d->state_fd >= 0)
3441 /* wait for Removal to happen */
3442 return NULL;
3443 if (d->state_fd >= 0)
3444 working ++;
3445 }
3446
2c514b71
NB		 3447 dprintf("ddf_activate: working=%d (%d) level=%d\n", working, a->info.array.raid_disks,
3448 a->info.array.level);
7e1432fb
NB		 3449 if (working == a->info.array.raid_disks)
3450 return NULL; /* array not degraded */
3451 switch (a->info.array.level) {
3452 case 1:
3453 if (working == 0)
3454 return NULL; /* failed */
3455 break;
3456 case 4:
3457 case 5:
3458 if (working < a->info.array.raid_disks - 1)
3459 return NULL; /* failed */
3460 break;
3461 case 6:
3462 if (working < a->info.array.raid_disks - 2)
3463 return NULL; /* failed */
3464 break;
3465 default: /* concat or stripe */
3466 return NULL; /* failed */
3467 }
3468
3469 /* For each slot, if it is not working, find a spare */
3470 dl = ddf->dlist;
3471 for (i = 0; i < a->info.array.raid_disks; i++) {
3472 for (d = a->info.devs ; d ; d = d->next)
3473 if (d->disk.raid_disk == i)
3474 break;
2c514b71 3475 dprintf("found %d: %p %x\n", i, d, d?d->curr_state:0);
7e1432fb
NB		 3476 if (d && (d->state_fd >= 0))
3477 continue;
3478
3479 /* OK, this device needs recovery. Find a spare */
3480 again:
3481 for ( ; dl ; dl = dl->next) {
3482 unsigned long long esize;
3483 unsigned long long pos;
3484 struct mdinfo *d2;
3485 int is_global = 0;
3486 int is_dedicated = 0;
3487 struct extent *ex;
3488 int j;
3489 /* If in this array, skip */
3490 for (d2 = a->info.devs ; d2 ; d2 = d2->next)
3491 if (d2->disk.major == dl->major &&
3492 d2->disk.minor == dl->minor) {
2c514b71 3493 dprintf("%x:%x already in array\n", dl->major, dl->minor);
7e1432fb
NB		 3494 break;
3495 }
3496 if (d2)
3497 continue;
3498 if (ddf->phys->entries[dl->pdnum].type &
3499 __cpu_to_be16(DDF_Spare)) {
3500 /* Check spare assign record */
3501 if (dl->spare) {
3502 if (dl->spare->type & DDF_spare_dedicated) {
3503 /* check spare_ents for guid */
3504 for (j = 0 ;
3505 j < __be16_to_cpu(dl->spare->populated);
3506 j++) {
3507 if (memcmp(dl->spare->spare_ents[j].guid,
3508 ddf->virt->entries[a->info.container_member].guid,
3509 DDF_GUID_LEN) == 0)
3510 is_dedicated = 1;
3511 }
3512 } else
3513 is_global = 1;
3514 }
3515 } else if (ddf->phys->entries[dl->pdnum].type &
3516 __cpu_to_be16(DDF_Global_Spare)) {
3517 is_global = 1;
3518 }
3519 if ( ! (is_dedicated ||
3520 (is_global && global_ok))) {
2c514b71 3521 dprintf("%x:%x not suitable: %d %d\n", dl->major, dl->minor,
7e1432fb
NB		 3522 is_dedicated, is_global);
3523 continue;
3524 }
3525
3526 /* We are allowed to use this device - is there space?
3527 * We need a->info.component_size sectors */
3528 ex = get_extents(ddf, dl);
3529 if (!ex) {
2c514b71 3530 dprintf("cannot get extents\n");
7e1432fb
NB		 3531 continue;
3532 }
3533 j = 0; pos = 0;
3534 esize = 0;
3535
3536 do {
3537 esize = ex[j].start - pos;
3538 if (esize >= a->info.component_size)
3539 break;
3540 pos = ex[i].start + ex[i].size;
3541 i++;
3542 } while (ex[i-1].size);
3543
3544 free(ex);
3545 if (esize < a->info.component_size) {
2c514b71
NB		 3546 dprintf("%x:%x has no room: %llu %llu\n", dl->major, dl->minor,
3547 esize, a->info.component_size);
7e1432fb
NB		 3548 /* No room */
3549 continue;
3550 }
3551
3552 /* Cool, we have a device with some space at pos */
3553 di = malloc(sizeof(*di));
79244939
DW		 3554 if (!di)
3555 continue;
7e1432fb
NB		 3556 memset(di, 0, sizeof(*di));
3557 di->disk.number = i;
3558 di->disk.raid_disk = i;
3559 di->disk.major = dl->major;
3560 di->disk.minor = dl->minor;
3561 di->disk.state = 0;
d23534e4 3562 di->recovery_start = 0;
7e1432fb
NB		 3563 di->data_offset = pos;
3564 di->component_size = a->info.component_size;
3565 di->container_member = dl->pdnum;
3566 di->next = rv;
3567 rv = di;
2c514b71
NB		 3568 dprintf("%x:%x to be %d at %llu\n", dl->major, dl->minor,
3569 i, pos);
7e1432fb
NB		 3570
3571 break;
3572 }
3573 if (!dl && ! global_ok) {
3574 /* not enough dedicated spares, try global */
3575 global_ok = 1;
3576 dl = ddf->dlist;
3577 goto again;
3578 }
3579 }
3580
3581 if (!rv)
3582 /* No spares found */
3583 return rv;
3584 /* Now 'rv' has a list of devices to return.
3585 * Create a metadata_update record to update the
3586 * phys_refnum and lba_offset values
3587 */
904c1ef7 3588 mu = malloc(sizeof(*mu));
79244939
DW		 3589 if (mu && posix_memalign(&mu->space, 512, sizeof(struct vcl)) != 0) {
3590 free(mu);
3591 mu = NULL;
3592 }
3593 if (!mu) {
3594 while (rv) {
3595 struct mdinfo *n = rv->next;
3596
3597 free(rv);
3598 rv = n;
3599 }
3600 return NULL;
3601 }
3602
904c1ef7 3603 mu->buf = malloc(ddf->conf_rec_len * 512);
7e1432fb
NB		 3604 mu->len = ddf->conf_rec_len;
3605 mu->next = *updates;
3606 vc = find_vdcr(ddf, a->info.container_member);
3607 memcpy(mu->buf, vc, ddf->conf_rec_len * 512);
3608
3609 vc = (struct vd_config*)mu->buf;
3610 lba = (__u64*)&vc->phys_refnum[ddf->mppe];
3611 for (di = rv ; di ; di = di->next) {
3612 vc->phys_refnum[di->disk.raid_disk] =
3613 ddf->phys->entries[dl->pdnum].refnum;
3614 lba[di->disk.raid_disk] = di->data_offset;
3615 }
3616 *updates = mu;
3617 return rv;
3618}
0e600426 3619#endif /* MDASSEMBLE */
7e1432fb 3620
b640a252
N		 3621static int ddf_level_to_layout(int level)
3622{
3623 switch(level) {
3624 case 0:
3625 case 1:
3626 return 0;
3627 case 5:
3628 return ALGORITHM_LEFT_SYMMETRIC;
3629 case 6:
3630 return ALGORITHM_ROTATING_N_CONTINUE;
3631 case 10:
3632 return 0x102;
3633 default:
3634 return UnSet;
3635 }
3636}
3637
a322f70c
DW		 3638struct superswitch super_ddf = {
3639#ifndef MDASSEMBLE
3640 .examine_super = examine_super_ddf,
3641 .brief_examine_super = brief_examine_super_ddf,
4737ae25 3642 .brief_examine_subarrays = brief_examine_subarrays_ddf,
bceedeec 3643 .export_examine_super = export_examine_super_ddf,
a322f70c
DW		 3644 .detail_super = detail_super_ddf,
3645 .brief_detail_super = brief_detail_super_ddf,
3646 .validate_geometry = validate_geometry_ddf,
78e44928 3647 .write_init_super = write_init_super_ddf,
0e600426 3648 .add_to_super = add_to_super_ddf,
a322f70c
DW		 3649#endif
3650 .match_home = match_home_ddf,
3651 .uuid_from_super= uuid_from_super_ddf,
3652 .getinfo_super = getinfo_super_ddf,
3653 .update_super = update_super_ddf,
3654
3655 .avail_size = avail_size_ddf,
3656
a19c88b8
NB		 3657 .compare_super = compare_super_ddf,
3658
a322f70c 3659 .load_super = load_super_ddf,
ba7eb04f 3660 .init_super = init_super_ddf,
955e9ea1 3661 .store_super = store_super_ddf,
a322f70c
DW		 3662 .free_super = free_super_ddf,
3663 .match_metadata_desc = match_metadata_desc_ddf,
78e44928 3664 .container_content = container_content_ddf,
b640a252 3665 .default_layout = ddf_level_to_layout,
a322f70c 3666
a322f70c 3667 .external = 1,
549e9569 3668
0e600426 3669#ifndef MDASSEMBLE
549e9569
NB		 3670/* for mdmon */
3671 .open_new = ddf_open_new,
ed9d66aa 3672 .set_array_state= ddf_set_array_state,
549e9569
NB		 3673 .set_disk = ddf_set_disk,
3674 .sync_metadata = ddf_sync_metadata,
88c164f4 3675 .process_update = ddf_process_update,
edd8d13c 3676 .prepare_update = ddf_prepare_update,
7e1432fb 3677 .activate_spare = ddf_activate_spare,
0e600426 3678#endif
4cce4069 3679 .name = "ddf",
a322f70c 3680};
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