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DDF: container_content_ddf: check for secondary RAID
[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;
f21e18ca 399 unsigned 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 */
f21e18ca 409 unsigned int vcnum; /* index into ->virt */
8ec5d685 410 struct vd_config **other_bvds;
6416d527
NB		 411 __u64 *block_sizes; /* NULL if all the same */
412 };
413 };
a322f70c 414 struct vd_config conf;
d2ca6449 415 } *conflist, *currentconf;
a322f70c 416 struct dl {
6416d527
NB		 417 union {
418 char space[512];
419 struct {
420 struct dl *next;
421 int major, minor;
422 char *devname;
423 int fd;
424 unsigned long long size; /* sectors */
097bcf00 425 unsigned long long primary_lba; /* sectors */
426 unsigned long long secondary_lba; /* sectors */
427 unsigned long long workspace_lba; /* sectors */
6416d527
NB		 428 int pdnum; /* index in ->phys */
429 struct spare_assign *spare;
8592f29d
N		 430 void *mdupdate; /* hold metadata update */
431
432 /* These fields used by auto-layout */
433 int raiddisk; /* slot to fill in autolayout */
434 __u64 esize;
6416d527
NB		 435 };
436 };
a322f70c 437 struct disk_data disk;
b2280677 438 struct vcl *vlist[0]; /* max_part in size */
2cc2983d 439 } *dlist, *add_list;
a322f70c
DW		 440};
441
442#ifndef offsetof
443#define offsetof(t,f) ((size_t)&(((t*)0)->f))
444#endif
445
f21e18ca 446static unsigned int calc_crc(void *buf, int len)
a322f70c
DW		 447{
448 /* crcs are always at the same place as in the ddf_header */
449 struct ddf_header *ddf = buf;
450 __u32 oldcrc = ddf->crc;
451 __u32 newcrc;
452 ddf->crc = 0xffffffff;
453
454 newcrc = crc32(0, buf, len);
455 ddf->crc = oldcrc;
4abe6b70
N		 456 /* The crc is store (like everything) bigendian, so convert
457 * here for simplicity
458 */
459 return __cpu_to_be32(newcrc);
a322f70c
DW		 460}
461
462static int load_ddf_header(int fd, unsigned long long lba,
463 unsigned long long size,
464 int type,
465 struct ddf_header *hdr, struct ddf_header *anchor)
466{
467 /* read a ddf header (primary or secondary) from fd/lba
468 * and check that it is consistent with anchor
469 * Need to check:
470 * magic, crc, guid, rev, and LBA's header_type, and
471 * everything after header_type must be the same
472 */
473 if (lba >= size-1)
474 return 0;
475
476 if (lseek64(fd, lba<<9, 0) < 0)
477 return 0;
478
479 if (read(fd, hdr, 512) != 512)
480 return 0;
481
482 if (hdr->magic != DDF_HEADER_MAGIC)
483 return 0;
484 if (calc_crc(hdr, 512) != hdr->crc)
485 return 0;
486 if (memcmp(anchor->guid, hdr->guid, DDF_GUID_LEN) != 0 ||
487 memcmp(anchor->revision, hdr->revision, 8) != 0 ||
488 anchor->primary_lba != hdr->primary_lba ||
489 anchor->secondary_lba != hdr->secondary_lba ||
490 hdr->type != type ||
491 memcmp(anchor->pad2, hdr->pad2, 512 -
492 offsetof(struct ddf_header, pad2)) != 0)
493 return 0;
494
495 /* Looks good enough to me... */
496 return 1;
497}
498
499static void *load_section(int fd, struct ddf_super *super, void *buf,
500 __u32 offset_be, __u32 len_be, int check)
501{
502 unsigned long long offset = __be32_to_cpu(offset_be);
503 unsigned long long len = __be32_to_cpu(len_be);
504 int dofree = (buf == NULL);
505
506 if (check)
507 if (len != 2 && len != 8 && len != 32
508 && len != 128 && len != 512)
509 return NULL;
510
511 if (len > 1024)
512 return NULL;
513 if (buf) {
514 /* All pre-allocated sections are a single block */
515 if (len != 1)
516 return NULL;
3d2c4fc7
DW		 517 } else if (posix_memalign(&buf, 512, len<<9) != 0)
518 buf = NULL;
6416d527 519
a322f70c
DW		 520 if (!buf)
521 return NULL;
522
523 if (super->active->type == 1)
524 offset += __be64_to_cpu(super->active->primary_lba);
525 else
526 offset += __be64_to_cpu(super->active->secondary_lba);
527
f21e18ca 528 if ((unsigned long long)lseek64(fd, offset<<9, 0) != (offset<<9)) {
a322f70c
DW		 529 if (dofree)
530 free(buf);
531 return NULL;
532 }
f21e18ca 533 if ((unsigned long long)read(fd, buf, len<<9) != (len<<9)) {
a322f70c
DW		 534 if (dofree)
535 free(buf);
536 return NULL;
537 }
538 return buf;
539}
540
541static int load_ddf_headers(int fd, struct ddf_super *super, char *devname)
542{
543 unsigned long long dsize;
544
545 get_dev_size(fd, NULL, &dsize);
546
547 if (lseek64(fd, dsize-512, 0) < 0) {
548 if (devname)
e7b84f9d
N		 549 pr_err("Cannot seek to anchor block on %s: %s\n",
550 devname, strerror(errno));
a322f70c
DW		 551 return 1;
552 }
553 if (read(fd, &super->anchor, 512) != 512) {
554 if (devname)
e7b84f9d
N		 555 pr_err("Cannot read anchor block on %s: %s\n",
556 devname, strerror(errno));
a322f70c
DW		 557 return 1;
558 }
559 if (super->anchor.magic != DDF_HEADER_MAGIC) {
560 if (devname)
e7b84f9d 561 pr_err("no DDF anchor found on %s\n",
a322f70c
DW		 562 devname);
563 return 2;
564 }
565 if (calc_crc(&super->anchor, 512) != super->anchor.crc) {
566 if (devname)
e7b84f9d 567 pr_err("bad CRC on anchor on %s\n",
a322f70c
DW		 568 devname);
569 return 2;
570 }
59e36268
NB		 571 if (memcmp(super->anchor.revision, DDF_REVISION_0, 8) != 0 &&
572 memcmp(super->anchor.revision, DDF_REVISION_2, 8) != 0) {
a322f70c 573 if (devname)
e7b84f9d 574 pr_err("can only support super revision"
59e36268
NB		 575 " %.8s and earlier, not %.8s on %s\n",
576 DDF_REVISION_2, super->anchor.revision,devname);
a322f70c
DW		 577 return 2;
578 }
579 if (load_ddf_header(fd, __be64_to_cpu(super->anchor.primary_lba),
580 dsize >> 9, 1,
581 &super->primary, &super->anchor) == 0) {
582 if (devname)
e7b84f9d
N		 583 pr_err("Failed to load primary DDF header "
584 "on %s\n", devname);
a322f70c
DW		 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
3dc821b0 639static void add_other_bvd(struct vcl *vcl, struct vd_config *vd,
640 unsigned int len)
641{
642 int i;
643 for (i = 0; i < vcl->conf.sec_elmnt_count-1; i++)
644 if (vcl->other_bvds[i] != NULL &&
645 vcl->other_bvds[i]->sec_elmnt_seq == vd->sec_elmnt_seq)
646 break;
647
648 if (i < vcl->conf.sec_elmnt_count-1) {
649 if (vd->seqnum <= vcl->other_bvds[i]->seqnum)
650 return;
651 } else {
652 for (i = 0; i < vcl->conf.sec_elmnt_count-1; i++)
653 if (vcl->other_bvds[i] == NULL)
654 break;
655 if (i == vcl->conf.sec_elmnt_count-1) {
656 pr_err("no space for sec level config %u, count is %u\n",
657 vd->sec_elmnt_seq, vcl->conf.sec_elmnt_count);
658 return;
659 }
660 if (posix_memalign((void **)&vcl->other_bvds[i], 512, len)
661 != 0) {
662 pr_err("%s could not allocate vd buf\n", __func__);
663 return;
664 }
665 }
666 memcpy(vcl->other_bvds[i], vd, len);
667}
668
a322f70c
DW		 669static int load_ddf_local(int fd, struct ddf_super *super,
670 char *devname, int keep)
671{
672 struct dl *dl;
673 struct stat stb;
674 char *conf;
f21e18ca
N		 675 unsigned int i;
676 unsigned int confsec;
b2280677 677 int vnum;
f21e18ca 678 unsigned int max_virt_disks = __be16_to_cpu(super->active->max_vd_entries);
d2ca6449 679 unsigned long long dsize;
a322f70c
DW		 680
681 /* First the local disk info */
3d2c4fc7 682 if (posix_memalign((void**)&dl, 512,
6416d527 683 sizeof(*dl) +
3d2c4fc7 684 (super->max_part) * sizeof(dl->vlist[0])) != 0) {
e7b84f9d 685 pr_err("%s could not allocate disk info buffer\n",
3d2c4fc7
DW		 686 __func__);
687 return 1;
688 }
a322f70c
DW		 689
690 load_section(fd, super, &dl->disk,
691 super->active->data_section_offset,
692 super->active->data_section_length,
693 0);
503975b9 694 dl->devname = devname ? xstrdup(devname) : NULL;
598f0d58 695
a322f70c
DW		 696 fstat(fd, &stb);
697 dl->major = major(stb.st_rdev);
698 dl->minor = minor(stb.st_rdev);
699 dl->next = super->dlist;
700 dl->fd = keep ? fd : -1;
d2ca6449
NB		 701
702 dl->size = 0;
703 if (get_dev_size(fd, devname, &dsize))
704 dl->size = dsize >> 9;
097bcf00 705 /* If the disks have different sizes, the LBAs will differ
706 * between phys disks.
707 * At this point here, the values in super->active must be valid
708 * for this phys disk. */
709 dl->primary_lba = super->active->primary_lba;
710 dl->secondary_lba = super->active->secondary_lba;
711 dl->workspace_lba = super->active->workspace_lba;
b2280677 712 dl->spare = NULL;
f21e18ca 713 for (i = 0 ; i < super->max_part ; i++)
a322f70c
DW		 714 dl->vlist[i] = NULL;
715 super->dlist = dl;
59e36268 716 dl->pdnum = -1;
f21e18ca 717 for (i = 0; i < __be16_to_cpu(super->active->max_pd_entries); i++)
5575e7d9
NB		 718 if (memcmp(super->phys->entries[i].guid,
719 dl->disk.guid, DDF_GUID_LEN) == 0)
720 dl->pdnum = i;
721
a322f70c
DW		 722 /* Now the config list. */
723 /* 'conf' is an array of config entries, some of which are
724 * probably invalid. Those which are good need to be copied into
725 * the conflist
726 */
a322f70c
DW		 727
728 conf = load_section(fd, super, NULL,
729 super->active->config_section_offset,
730 super->active->config_section_length,
731 0);
732
b2280677 733 vnum = 0;
e223334f
N		 734 for (confsec = 0;
735 confsec < __be32_to_cpu(super->active->config_section_length);
736 confsec += super->conf_rec_len) {
a322f70c 737 struct vd_config *vd =
e223334f 738 (struct vd_config *)((char*)conf + confsec*512);
a322f70c
DW		 739 struct vcl *vcl;
740
b2280677
NB		 741 if (vd->magic == DDF_SPARE_ASSIGN_MAGIC) {
742 if (dl->spare)
743 continue;
3d2c4fc7
DW		 744 if (posix_memalign((void**)&dl->spare, 512,
745 super->conf_rec_len*512) != 0) {
e7b84f9d
N		 746 pr_err("%s could not allocate spare info buf\n",
747 __func__);
3d2c4fc7
DW		 748 return 1;
749 }
613b0d17 750
b2280677
NB		 751 memcpy(dl->spare, vd, super->conf_rec_len*512);
752 continue;
753 }
a322f70c
DW		 754 if (vd->magic != DDF_VD_CONF_MAGIC)
755 continue;
756 for (vcl = super->conflist; vcl; vcl = vcl->next) {
757 if (memcmp(vcl->conf.guid,
758 vd->guid, DDF_GUID_LEN) == 0)
759 break;
760 }
761
762 if (vcl) {
b2280677 763 dl->vlist[vnum++] = vcl;
3dc821b0 764 if (vcl->other_bvds != NULL &&
765 vcl->conf.sec_elmnt_seq != vd->sec_elmnt_seq) {
766 add_other_bvd(vcl, vd, super->conf_rec_len*512);
767 continue;
768 }
a322f70c
DW		 769 if (__be32_to_cpu(vd->seqnum) <=
770 __be32_to_cpu(vcl->conf.seqnum))
771 continue;
59e36268 772 } else {
3d2c4fc7 773 if (posix_memalign((void**)&vcl, 512,
6416d527 774 (super->conf_rec_len*512 +
3d2c4fc7 775 offsetof(struct vcl, conf))) != 0) {
e7b84f9d
N		 776 pr_err("%s could not allocate vcl buf\n",
777 __func__);
3d2c4fc7
DW		 778 return 1;
779 }
a322f70c 780 vcl->next = super->conflist;
59e36268 781 vcl->block_sizes = NULL; /* FIXME not for CONCAT */
8ec5d685 782 if (vd->sec_elmnt_count > 1)
783 vcl->other_bvds =
784 xcalloc(vd->sec_elmnt_count - 1,
785 sizeof(struct vd_config *));
786 else
787 vcl->other_bvds = NULL;
a322f70c 788 super->conflist = vcl;
b2280677 789 dl->vlist[vnum++] = vcl;
a322f70c 790 }
8c3b8c2c 791 memcpy(&vcl->conf, vd, super->conf_rec_len*512);
a322f70c 792 vcl->lba_offset = (__u64*)
8c3b8c2c 793 &vcl->conf.phys_refnum[super->mppe];
59e36268
NB		 794
795 for (i=0; i < max_virt_disks ; i++)
796 if (memcmp(super->virt->entries[i].guid,
797 vcl->conf.guid, DDF_GUID_LEN)==0)
798 break;
799 if (i < max_virt_disks)
800 vcl->vcnum = i;
a322f70c
DW		 801 }
802 free(conf);
803
804 return 0;
805}
806
807#ifndef MDASSEMBLE
808static int load_super_ddf_all(struct supertype *st, int fd,
e1902a7b 809 void **sbp, char *devname);
a322f70c 810#endif
37424f13
DW		 811
812static void free_super_ddf(struct supertype *st);
813
a322f70c
DW		 814static int load_super_ddf(struct supertype *st, int fd,
815 char *devname)
816{
817 unsigned long long dsize;
818 struct ddf_super *super;
819 int rv;
820
a322f70c
DW		 821 if (get_dev_size(fd, devname, &dsize) == 0)
822 return 1;
823
691c6ee1
N		 824 if (test_partition(fd))
825 /* DDF is not allowed on partitions */
826 return 1;
827
a322f70c
DW		 828 /* 32M is a lower bound */
829 if (dsize <= 32*1024*1024) {
97320d7c 830 if (devname)
e7b84f9d
N		 831 pr_err("%s is too small for ddf: "
832 "size is %llu sectors.\n",
833 devname, dsize>>9);
97320d7c 834 return 1;
a322f70c
DW		 835 }
836 if (dsize & 511) {
97320d7c 837 if (devname)
e7b84f9d
N		 838 pr_err("%s is an odd size for ddf: "
839 "size is %llu bytes.\n",
840 devname, dsize);
97320d7c 841 return 1;
a322f70c
DW		 842 }
843
37424f13
DW		 844 free_super_ddf(st);
845
6416d527 846 if (posix_memalign((void**)&super, 512, sizeof(*super))!= 0) {
e7b84f9d 847 pr_err("malloc of %zu failed.\n",
a322f70c
DW		 848 sizeof(*super));
849 return 1;
850 }
a2349791 851 memset(super, 0, sizeof(*super));
a322f70c
DW		 852
853 rv = load_ddf_headers(fd, super, devname);
854 if (rv) {
855 free(super);
856 return rv;
857 }
858
859 /* Have valid headers and have chosen the best. Let's read in the rest*/
860
861 rv = load_ddf_global(fd, super, devname);
862
863 if (rv) {
864 if (devname)
e7b84f9d
N		 865 pr_err("Failed to load all information "
866 "sections on %s\n", devname);
a322f70c
DW		 867 free(super);
868 return rv;
869 }
870
3d2c4fc7
DW		 871 rv = load_ddf_local(fd, super, devname, 0);
872
873 if (rv) {
874 if (devname)
e7b84f9d
N		 875 pr_err("Failed to load all information "
876 "sections on %s\n", devname);
3d2c4fc7
DW		 877 free(super);
878 return rv;
879 }
a322f70c
DW		 880
881 /* Should possibly check the sections .... */
882
883 st->sb = super;
884 if (st->ss == NULL) {
885 st->ss = &super_ddf;
886 st->minor_version = 0;
887 st->max_devs = 512;
888 }
889 return 0;
890
891}
892
893static void free_super_ddf(struct supertype *st)
894{
895 struct ddf_super *ddf = st->sb;
896 if (ddf == NULL)
897 return;
898 free(ddf->phys);
899 free(ddf->virt);
900 while (ddf->conflist) {
901 struct vcl *v = ddf->conflist;
902 ddf->conflist = v->next;
59e36268
NB		 903 if (v->block_sizes)
904 free(v->block_sizes);
3dc821b0 905 if (v->other_bvds) {
906 int i;
907 for (i = 0; i < v->conf.sec_elmnt_count-1; i++)
908 if (v->other_bvds[i] != NULL)
909 free(v->other_bvds[i]);
8ec5d685 910 free(v->other_bvds);
3dc821b0 911 }
a322f70c
DW		 912 free(v);
913 }
914 while (ddf->dlist) {
915 struct dl *d = ddf->dlist;
916 ddf->dlist = d->next;
917 if (d->fd >= 0)
918 close(d->fd);
b2280677
NB		 919 if (d->spare)
920 free(d->spare);
a322f70c
DW		 921 free(d);
922 }
8a38cb04
N		 923 while (ddf->add_list) {
924 struct dl *d = ddf->add_list;
925 ddf->add_list = d->next;
926 if (d->fd >= 0)
927 close(d->fd);
928 if (d->spare)
929 free(d->spare);
930 free(d);
931 }
a322f70c
DW		 932 free(ddf);
933 st->sb = NULL;
934}
935
936static struct supertype *match_metadata_desc_ddf(char *arg)
937{
938 /* 'ddf' only support containers */
939 struct supertype *st;
940 if (strcmp(arg, "ddf") != 0 &&
941 strcmp(arg, "default") != 0
942 )
943 return NULL;
944
503975b9 945 st = xcalloc(1, sizeof(*st));
a322f70c
DW		 946 st->ss = &super_ddf;
947 st->max_devs = 512;
948 st->minor_version = 0;
949 st->sb = NULL;
950 return st;
951}
952
a322f70c
DW		 953#ifndef MDASSEMBLE
954
955static mapping_t ddf_state[] = {
956 { "Optimal", 0},
957 { "Degraded", 1},
958 { "Deleted", 2},
959 { "Missing", 3},
960 { "Failed", 4},
961 { "Partially Optimal", 5},
962 { "-reserved-", 6},
963 { "-reserved-", 7},
964 { NULL, 0}
965};
966
967static mapping_t ddf_init_state[] = {
968 { "Not Initialised", 0},
969 { "QuickInit in Progress", 1},
970 { "Fully Initialised", 2},
971 { "*UNKNOWN*", 3},
972 { NULL, 0}
973};
974static mapping_t ddf_access[] = {
975 { "Read/Write", 0},
976 { "Reserved", 1},
977 { "Read Only", 2},
978 { "Blocked (no access)", 3},
979 { NULL ,0}
980};
981
982static mapping_t ddf_level[] = {
983 { "RAID0", DDF_RAID0},
984 { "RAID1", DDF_RAID1},
985 { "RAID3", DDF_RAID3},
986 { "RAID4", DDF_RAID4},
987 { "RAID5", DDF_RAID5},
988 { "RAID1E",DDF_RAID1E},
989 { "JBOD", DDF_JBOD},
990 { "CONCAT",DDF_CONCAT},
991 { "RAID5E",DDF_RAID5E},
992 { "RAID5EE",DDF_RAID5EE},
993 { "RAID6", DDF_RAID6},
994 { NULL, 0}
995};
996static mapping_t ddf_sec_level[] = {
997 { "Striped", DDF_2STRIPED},
998 { "Mirrored", DDF_2MIRRORED},
999 { "Concat", DDF_2CONCAT},
1000 { "Spanned", DDF_2SPANNED},
1001 { NULL, 0}
1002};
1003#endif
1004
1005struct num_mapping {
1006 int num1, num2;
1007};
1008static struct num_mapping ddf_level_num[] = {
1009 { DDF_RAID0, 0 },
1010 { DDF_RAID1, 1 },
1011 { DDF_RAID3, LEVEL_UNSUPPORTED },
60f18132
NB		 1012 { DDF_RAID4, 4 },
1013 { DDF_RAID5, 5 },
a322f70c
DW		 1014 { DDF_RAID1E, LEVEL_UNSUPPORTED },
1015 { DDF_JBOD, LEVEL_UNSUPPORTED },
1016 { DDF_CONCAT, LEVEL_LINEAR },
1017 { DDF_RAID5E, LEVEL_UNSUPPORTED },
1018 { DDF_RAID5EE, LEVEL_UNSUPPORTED },
1019 { DDF_RAID6, 6},
1020 { MAXINT, MAXINT }
1021};
1022
1023static int map_num1(struct num_mapping *map, int num)
1024{
1025 int i;
1026 for (i=0 ; map[i].num1 != MAXINT; i++)
1027 if (map[i].num1 == num)
1028 break;
1029 return map[i].num2;
1030}
1031
42dc2744
N		 1032static int all_ff(char *guid)
1033{
1034 int i;
1035 for (i = 0; i < DDF_GUID_LEN; i++)
1036 if (guid[i] != (char)0xff)
1037 return 0;
1038 return 1;
1039}
1040
a322f70c
DW		 1041#ifndef MDASSEMBLE
1042static void print_guid(char *guid, int tstamp)
1043{
1044 /* A GUIDs are part (or all) ASCII and part binary.
1045 * They tend to be space padded.
59e36268
NB		 1046 * We print the GUID in HEX, then in parentheses add
1047 * any initial ASCII sequence, and a possible
1048 * time stamp from bytes 16-19
a322f70c
DW		 1049 */
1050 int l = DDF_GUID_LEN;
1051 int i;
59e36268
NB		 1052
1053 for (i=0 ; i<DDF_GUID_LEN ; i++) {
1054 if ((i&3)==0 && i != 0) printf(":");
1055 printf("%02X", guid[i]&255);
1056 }
1057
cfccea8c 1058 printf("\n (");
a322f70c
DW		 1059 while (l && guid[l-1] == ' ')
1060 l--;
1061 for (i=0 ; i<l ; i++) {
1062 if (guid[i] >= 0x20 && guid[i] < 0x7f)
1063 fputc(guid[i], stdout);
1064 else
59e36268 1065 break;
a322f70c
DW		 1066 }
1067 if (tstamp) {
1068 time_t then = __be32_to_cpu(*(__u32*)(guid+16)) + DECADE;
1069 char tbuf[100];
1070 struct tm *tm;
1071 tm = localtime(&then);
59e36268 1072 strftime(tbuf, 100, " %D %T",tm);
a322f70c
DW		 1073 fputs(tbuf, stdout);
1074 }
59e36268 1075 printf(")");
a322f70c
DW		 1076}
1077
1078static void examine_vd(int n, struct ddf_super *sb, char *guid)
1079{
8c3b8c2c 1080 int crl = sb->conf_rec_len;
a322f70c
DW		 1081 struct vcl *vcl;
1082
1083 for (vcl = sb->conflist ; vcl ; vcl = vcl->next) {
f21e18ca 1084 unsigned int i;
a322f70c
DW		 1085 struct vd_config *vc = &vcl->conf;
1086
1087 if (calc_crc(vc, crl*512) != vc->crc)
1088 continue;
1089 if (memcmp(vc->guid, guid, DDF_GUID_LEN) != 0)
1090 continue;
1091
1092 /* Ok, we know about this VD, let's give more details */
b06e3095 1093 printf(" Raid Devices[%d] : %d (", n,
a322f70c 1094 __be16_to_cpu(vc->prim_elmnt_count));
f21e18ca 1095 for (i = 0; i < __be16_to_cpu(vc->prim_elmnt_count); i++) {
b06e3095
N		 1096 int j;
1097 int cnt = __be16_to_cpu(sb->phys->used_pdes);
1098 for (j=0; j<cnt; j++)
1099 if (vc->phys_refnum[i] == sb->phys->entries[j].refnum)
1100 break;
1101 if (i) printf(" ");
1102 if (j < cnt)
1103 printf("%d", j);
1104 else
1105 printf("--");
1106 }
1107 printf(")\n");
1108 if (vc->chunk_shift != 255)
613b0d17
N		 1109 printf(" Chunk Size[%d] : %d sectors\n", n,
1110 1 << vc->chunk_shift);
a322f70c
DW		 1111 printf(" Raid Level[%d] : %s\n", n,
1112 map_num(ddf_level, vc->prl)?:"-unknown-");
1113 if (vc->sec_elmnt_count != 1) {
1114 printf(" Secondary Position[%d] : %d of %d\n", n,
1115 vc->sec_elmnt_seq, vc->sec_elmnt_count);
1116 printf(" Secondary Level[%d] : %s\n", n,
1117 map_num(ddf_sec_level, vc->srl) ?: "-unknown-");
1118 }
1119 printf(" Device Size[%d] : %llu\n", n,
c9b6907b 1120 (unsigned long long)__be64_to_cpu(vc->blocks)/2);
a322f70c 1121 printf(" Array Size[%d] : %llu\n", n,
c9b6907b 1122 (unsigned long long)__be64_to_cpu(vc->array_blocks)/2);
a322f70c
DW		 1123 }
1124}
1125
1126static void examine_vds(struct ddf_super *sb)
1127{
1128 int cnt = __be16_to_cpu(sb->virt->populated_vdes);
1129 int i;
1130 printf(" Virtual Disks : %d\n", cnt);
1131
1132 for (i=0; i<cnt; i++) {
1133 struct virtual_entry *ve = &sb->virt->entries[i];
b06e3095 1134 printf("\n");
a322f70c
DW		 1135 printf(" VD GUID[%d] : ", i); print_guid(ve->guid, 1);
1136 printf("\n");
1137 printf(" unit[%d] : %d\n", i, __be16_to_cpu(ve->unit));
1138 printf(" state[%d] : %s, %s%s\n", i,
1139 map_num(ddf_state, ve->state & 7),
1140 (ve->state & 8) ? "Morphing, ": "",
1141 (ve->state & 16)? "Not Consistent" : "Consistent");
1142 printf(" init state[%d] : %s\n", i,
1143 map_num(ddf_init_state, ve->init_state&3));
1144 printf(" access[%d] : %s\n", i,
1145 map_num(ddf_access, (ve->init_state>>6) & 3));
1146 printf(" Name[%d] : %.16s\n", i, ve->name);
1147 examine_vd(i, sb, ve->guid);
1148 }
1149 if (cnt) printf("\n");
1150}
1151
1152static void examine_pds(struct ddf_super *sb)
1153{
1154 int cnt = __be16_to_cpu(sb->phys->used_pdes);
1155 int i;
1156 struct dl *dl;
1157 printf(" Physical Disks : %d\n", cnt);
962371a5 1158 printf(" Number RefNo Size Device Type/State\n");
a322f70c
DW		 1159
1160 for (i=0 ; i<cnt ; i++) {
1161 struct phys_disk_entry *pd = &sb->phys->entries[i];
1162 int type = __be16_to_cpu(pd->type);
1163 int state = __be16_to_cpu(pd->state);
1164
b06e3095
N		 1165 //printf(" PD GUID[%d] : ", i); print_guid(pd->guid, 0);
1166 //printf("\n");
1167 printf(" %3d %08x ", i,
a322f70c 1168 __be32_to_cpu(pd->refnum));
613b0d17 1169 printf("%8lluK ",
c9b6907b 1170 (unsigned long long)__be64_to_cpu(pd->config_size)>>1);
b06e3095
N		 1171 for (dl = sb->dlist; dl ; dl = dl->next) {
1172 if (dl->disk.refnum == pd->refnum) {
1173 char *dv = map_dev(dl->major, dl->minor, 0);
1174 if (dv) {
962371a5 1175 printf("%-15s", dv);
b06e3095
N		 1176 break;
1177 }
1178 }
1179 }
1180 if (!dl)
962371a5 1181 printf("%15s","");
b06e3095 1182 printf(" %s%s%s%s%s",
a322f70c 1183 (type&2) ? "active":"",
b06e3095 1184 (type&4) ? "Global-Spare":"",
a322f70c
DW		 1185 (type&8) ? "spare" : "",
1186 (type&16)? ", foreign" : "",
1187 (type&32)? "pass-through" : "");
18cb4496
N		 1188 if (state & DDF_Failed)
1189 /* This over-rides these three */
1190 state &= ~(DDF_Online|DDF_Rebuilding|DDF_Transition);
b06e3095 1191 printf("/%s%s%s%s%s%s%s",
a322f70c
DW		 1192 (state&1)? "Online": "Offline",
1193 (state&2)? ", Failed": "",
1194 (state&4)? ", Rebuilding": "",
1195 (state&8)? ", in-transition": "",
b06e3095
N		 1196 (state&16)? ", SMART-errors": "",
1197 (state&32)? ", Unrecovered-Read-Errors": "",
a322f70c 1198 (state&64)? ", Missing" : "");
a322f70c
DW		 1199 printf("\n");
1200 }
1201}
1202
1203static void examine_super_ddf(struct supertype *st, char *homehost)
1204{
1205 struct ddf_super *sb = st->sb;
1206
1207 printf(" Magic : %08x\n", __be32_to_cpu(sb->anchor.magic));
1208 printf(" Version : %.8s\n", sb->anchor.revision);
598f0d58
NB		 1209 printf("Controller GUID : "); print_guid(sb->controller.guid, 0);
1210 printf("\n");
1211 printf(" Container GUID : "); print_guid(sb->anchor.guid, 1);
a322f70c
DW		 1212 printf("\n");
1213 printf(" Seq : %08x\n", __be32_to_cpu(sb->active->seq));
1214 printf(" Redundant hdr : %s\n", sb->secondary.magic == DDF_HEADER_MAGIC
1215 ?"yes" : "no");
1216 examine_vds(sb);
1217 examine_pds(sb);
1218}
1219
a5d85af7 1220static void getinfo_super_ddf(struct supertype *st, struct mdinfo *info, char *map);
ff54de6e 1221
42dc2744 1222static void uuid_from_super_ddf(struct supertype *st, int uuid[4]);
ff54de6e 1223
061f2c6a 1224static void brief_examine_super_ddf(struct supertype *st, int verbose)
4737ae25
N		 1225{
1226 /* We just write a generic DDF ARRAY entry
1227 */
1228 struct mdinfo info;
1229 char nbuf[64];
a5d85af7 1230 getinfo_super_ddf(st, &info, NULL);
4737ae25
N		 1231 fname_from_uuid(st, &info, nbuf, ':');
1232
1233 printf("ARRAY metadata=ddf UUID=%s\n", nbuf + 5);
1234}
1235
1236static void brief_examine_subarrays_ddf(struct supertype *st, int verbose)
a322f70c
DW		 1237{
1238 /* We just write a generic DDF ARRAY entry
a322f70c 1239 */
42dc2744 1240 struct ddf_super *ddf = st->sb;
ff54de6e 1241 struct mdinfo info;
f21e18ca 1242 unsigned int i;
ff54de6e 1243 char nbuf[64];
a5d85af7 1244 getinfo_super_ddf(st, &info, NULL);
ff54de6e 1245 fname_from_uuid(st, &info, nbuf, ':');
42dc2744 1246
f21e18ca 1247 for (i = 0; i < __be16_to_cpu(ddf->virt->max_vdes); i++) {
42dc2744
N		 1248 struct virtual_entry *ve = &ddf->virt->entries[i];
1249 struct vcl vcl;
1250 char nbuf1[64];
1251 if (all_ff(ve->guid))
1252 continue;
1253 memcpy(vcl.conf.guid, ve->guid, DDF_GUID_LEN);
1254 ddf->currentconf =&vcl;
1255 uuid_from_super_ddf(st, info.uuid);
1256 fname_from_uuid(st, &info, nbuf1, ':');
1257 printf("ARRAY container=%s member=%d UUID=%s\n",
1258 nbuf+5, i, nbuf1+5);
1259 }
a322f70c
DW		 1260}
1261
bceedeec
N		 1262static void export_examine_super_ddf(struct supertype *st)
1263{
1264 struct mdinfo info;
1265 char nbuf[64];
a5d85af7 1266 getinfo_super_ddf(st, &info, NULL);
bceedeec
N		 1267 fname_from_uuid(st, &info, nbuf, ':');
1268 printf("MD_METADATA=ddf\n");
1269 printf("MD_LEVEL=container\n");
1270 printf("MD_UUID=%s\n", nbuf+5);
1271}
bceedeec 1272
a322f70c
DW		 1273static void detail_super_ddf(struct supertype *st, char *homehost)
1274{
1275 /* FIXME later
1276 * Could print DDF GUID
1277 * Need to find which array
1278 * If whole, briefly list all arrays
1279 * If one, give name
1280 */
1281}
1282
1283static void brief_detail_super_ddf(struct supertype *st)
1284{
1285 /* FIXME I really need to know which array we are detailing.
1286 * Can that be stored in ddf_super??
1287 */
1288// struct ddf_super *ddf = st->sb;
ff54de6e
N		 1289 struct mdinfo info;
1290 char nbuf[64];
a5d85af7 1291 getinfo_super_ddf(st, &info, NULL);
ff54de6e
N		 1292 fname_from_uuid(st, &info, nbuf,':');
1293 printf(" UUID=%s", nbuf + 5);
a322f70c 1294}
a322f70c
DW		 1295#endif
1296
1297static int match_home_ddf(struct supertype *st, char *homehost)
1298{
1299 /* It matches 'this' host if the controller is a
1300 * Linux-MD controller with vendor_data matching
1301 * the hostname
1302 */
1303 struct ddf_super *ddf = st->sb;
f21e18ca 1304 unsigned int len;
d1d3482b
N		 1305
1306 if (!homehost)
1307 return 0;
1308 len = strlen(homehost);
a322f70c
DW		 1309
1310 return (memcmp(ddf->controller.guid, T10, 8) == 0 &&
1311 len < sizeof(ddf->controller.vendor_data) &&
1312 memcmp(ddf->controller.vendor_data, homehost,len) == 0 &&
1313 ddf->controller.vendor_data[len] == 0);
1314}
1315
0e600426 1316#ifndef MDASSEMBLE
f21e18ca 1317static struct vd_config *find_vdcr(struct ddf_super *ddf, unsigned int inst)
a322f70c 1318{
7a7cc504 1319 struct vcl *v;
59e36268 1320
7a7cc504 1321 for (v = ddf->conflist; v; v = v->next)
59e36268 1322 if (inst == v->vcnum)
7a7cc504
NB		 1323 return &v->conf;
1324 return NULL;
1325}
0e600426 1326#endif
7a7cc504
NB		 1327
1328static int find_phys(struct ddf_super *ddf, __u32 phys_refnum)
1329{
1330 /* Find the entry in phys_disk which has the given refnum
1331 * and return it's index
1332 */
f21e18ca
N		 1333 unsigned int i;
1334 for (i = 0; i < __be16_to_cpu(ddf->phys->max_pdes); i++)
7a7cc504
NB		 1335 if (ddf->phys->entries[i].refnum == phys_refnum)
1336 return i;
1337 return -1;
a322f70c
DW		 1338}
1339
1340static void uuid_from_super_ddf(struct supertype *st, int uuid[4])
1341{
1342 /* The uuid returned here is used for:
1343 * uuid to put into bitmap file (Create, Grow)
1344 * uuid for backup header when saving critical section (Grow)
1345 * comparing uuids when re-adding a device into an array
51006d85
N		 1346 * In these cases the uuid required is that of the data-array,
1347 * not the device-set.
1348 * uuid to recognise same set when adding a missing device back
1349 * to an array. This is a uuid for the device-set.
613b0d17 1350 *
a322f70c
DW		 1351 * For each of these we can make do with a truncated
1352 * or hashed uuid rather than the original, as long as
1353 * everyone agrees.
a322f70c
DW		 1354 * In the case of SVD we assume the BVD is of interest,
1355 * though that might be the case if a bitmap were made for
1356 * a mirrored SVD - worry about that later.
1357 * So we need to find the VD configuration record for the
1358 * relevant BVD and extract the GUID and Secondary_Element_Seq.
1359 * The first 16 bytes of the sha1 of these is used.
1360 */
1361 struct ddf_super *ddf = st->sb;
d2ca6449 1362 struct vcl *vcl = ddf->currentconf;
c5afc314
N		 1363 char *guid;
1364 char buf[20];
1365 struct sha1_ctx ctx;
a322f70c 1366
c5afc314
N		 1367 if (vcl)
1368 guid = vcl->conf.guid;
1369 else
1370 guid = ddf->anchor.guid;
1371
1372 sha1_init_ctx(&ctx);
1373 sha1_process_bytes(guid, DDF_GUID_LEN, &ctx);
c5afc314
N		 1374 sha1_finish_ctx(&ctx, buf);
1375 memcpy(uuid, buf, 4*4);
a322f70c
DW		 1376}
1377
a5d85af7 1378static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info, char *map);
78e44928 1379
a5d85af7 1380static void getinfo_super_ddf(struct supertype *st, struct mdinfo *info, char *map)
a322f70c
DW		 1381{
1382 struct ddf_super *ddf = st->sb;
a5d85af7 1383 int map_disks = info->array.raid_disks;
90fa1a29 1384 __u32 *cptr;
a322f70c 1385
78e44928 1386 if (ddf->currentconf) {
a5d85af7 1387 getinfo_super_ddf_bvd(st, info, map);
78e44928
NB		 1388 return;
1389 }
95eeceeb 1390 memset(info, 0, sizeof(*info));
78e44928 1391
a322f70c
DW		 1392 info->array.raid_disks = __be16_to_cpu(ddf->phys->used_pdes);
1393 info->array.level = LEVEL_CONTAINER;
1394 info->array.layout = 0;
1395 info->array.md_minor = -1;
90fa1a29
JS		 1396 cptr = (__u32 *)(ddf->anchor.guid + 16);
1397 info->array.ctime = DECADE + __be32_to_cpu(*cptr);
1398
a322f70c
DW		 1399 info->array.utime = 0;
1400 info->array.chunk_size = 0;
510242aa 1401 info->container_enough = 1;
a322f70c 1402
a322f70c
DW		 1403 info->disk.major = 0;
1404 info->disk.minor = 0;
cba0191b
NB		 1405 if (ddf->dlist) {
1406 info->disk.number = __be32_to_cpu(ddf->dlist->disk.refnum);
59e36268 1407 info->disk.raid_disk = find_phys(ddf, ddf->dlist->disk.refnum);
d2ca6449
NB		 1408
1409 info->data_offset = __be64_to_cpu(ddf->phys->
613b0d17
N		 1410 entries[info->disk.raid_disk].
1411 config_size);
d2ca6449 1412 info->component_size = ddf->dlist->size - info->data_offset;
cba0191b
NB		 1413 } else {
1414 info->disk.number = -1;
661dce36 1415 info->disk.raid_disk = -1;
cba0191b
NB		 1416// info->disk.raid_disk = find refnum in the table and use index;
1417 }
f22385f9 1418 info->disk.state = (1 << MD_DISK_SYNC) | (1 << MD_DISK_ACTIVE);
a19c88b8 1419
921d9e16 1420 info->recovery_start = MaxSector;
a19c88b8 1421 info->reshape_active = 0;
6e75048b 1422 info->recovery_blocked = 0;
c5afc314 1423 info->name[0] = 0;
a322f70c 1424
f35f2525
N		 1425 info->array.major_version = -1;
1426 info->array.minor_version = -2;
159c3a1a 1427 strcpy(info->text_version, "ddf");
a67dd8cc 1428 info->safe_mode_delay = 0;
159c3a1a 1429
c5afc314 1430 uuid_from_super_ddf(st, info->uuid);
a322f70c 1431
a5d85af7
N		 1432 if (map) {
1433 int i;
1434 for (i = 0 ; i < map_disks; i++) {
1435 if (i < info->array.raid_disks &&
1436 (__be16_to_cpu(ddf->phys->entries[i].state) & DDF_Online) &&
1437 !(__be16_to_cpu(ddf->phys->entries[i].state) & DDF_Failed))
1438 map[i] = 1;
1439 else
1440 map[i] = 0;
1441 }
1442 }
a322f70c
DW		 1443}
1444
598f0d58
NB		 1445static int rlq_to_layout(int rlq, int prl, int raiddisks);
1446
a5d85af7 1447static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info, char *map)
a322f70c
DW		 1448{
1449 struct ddf_super *ddf = st->sb;
d2ca6449
NB		 1450 struct vcl *vc = ddf->currentconf;
1451 int cd = ddf->currentdev;
db42fa9b 1452 int j;
8592f29d 1453 struct dl *dl;
a5d85af7 1454 int map_disks = info->array.raid_disks;
90fa1a29 1455 __u32 *cptr;
a322f70c 1456
95eeceeb 1457 memset(info, 0, sizeof(*info));
a322f70c
DW		 1458 /* FIXME this returns BVD info - what if we want SVD ?? */
1459
d2ca6449
NB		 1460 info->array.raid_disks = __be16_to_cpu(vc->conf.prim_elmnt_count);
1461 info->array.level = map_num1(ddf_level_num, vc->conf.prl);
1462 info->array.layout = rlq_to_layout(vc->conf.rlq, vc->conf.prl,
598f0d58 1463 info->array.raid_disks);
a322f70c 1464 info->array.md_minor = -1;
90fa1a29
JS		 1465 cptr = (__u32 *)(vc->conf.guid + 16);
1466 info->array.ctime = DECADE + __be32_to_cpu(*cptr);
d2ca6449
NB		 1467 info->array.utime = DECADE + __be32_to_cpu(vc->conf.timestamp);
1468 info->array.chunk_size = 512 << vc->conf.chunk_shift;
da9b4a62 1469 info->custom_array_size = 0;
d2ca6449 1470
f21e18ca 1471 if (cd >= 0 && (unsigned)cd < ddf->mppe) {
d2ca6449
NB		 1472 info->data_offset = __be64_to_cpu(vc->lba_offset[cd]);
1473 if (vc->block_sizes)
1474 info->component_size = vc->block_sizes[cd];
1475 else
1476 info->component_size = __be64_to_cpu(vc->conf.blocks);
1477 }
a322f70c 1478
fb204fb2
N		 1479 for (dl = ddf->dlist; dl ; dl = dl->next)
1480 if (dl->raiddisk == ddf->currentdev)
1481 break;
1482
a322f70c
DW		 1483 info->disk.major = 0;
1484 info->disk.minor = 0;
fb204fb2 1485 info->disk.state = 0;
8592f29d
N		 1486 if (dl) {
1487 info->disk.major = dl->major;
1488 info->disk.minor = dl->minor;
fb204fb2
N		 1489 info->disk.raid_disk = dl->raiddisk;
1490 info->disk.number = dl->pdnum;
1491 info->disk.state = (1<<MD_DISK_SYNC)|(1<<MD_DISK_ACTIVE);
8592f29d 1492 }
a322f70c 1493
103f2410
NB		 1494 info->container_member = ddf->currentconf->vcnum;
1495
921d9e16 1496 info->recovery_start = MaxSector;
80d26cb2 1497 info->resync_start = 0;
624c5ad4 1498 info->reshape_active = 0;
6e75048b 1499 info->recovery_blocked = 0;
80d26cb2
NB		 1500 if (!(ddf->virt->entries[info->container_member].state
1501 & DDF_state_inconsistent) &&
1502 (ddf->virt->entries[info->container_member].init_state
1503 & DDF_initstate_mask)
1504 == DDF_init_full)
b7528a20 1505 info->resync_start = MaxSector;
80d26cb2 1506
a322f70c
DW		 1507 uuid_from_super_ddf(st, info->uuid);
1508
f35f2525
N		 1509 info->array.major_version = -1;
1510 info->array.minor_version = -2;
9b63e648 1511 sprintf(info->text_version, "/%s/%d",
4dd2df09 1512 st->container_devnm,
9b63e648 1513 info->container_member);
a67dd8cc 1514 info->safe_mode_delay = 200;
159c3a1a 1515
db42fa9b
N		 1516 memcpy(info->name, ddf->virt->entries[info->container_member].name, 16);
1517 info->name[16]=0;
1518 for(j=0; j<16; j++)
1519 if (info->name[j] == ' ')
1520 info->name[j] = 0;
a5d85af7
N		 1521
1522 if (map)
1523 for (j = 0; j < map_disks; j++) {
1524 map[j] = 0;
1525 if (j < info->array.raid_disks) {
1526 int i = find_phys(ddf, vc->conf.phys_refnum[j]);
613b0d17 1527 if (i >= 0 &&
a5d85af7
N		 1528 (__be16_to_cpu(ddf->phys->entries[i].state) & DDF_Online) &&
1529 !(__be16_to_cpu(ddf->phys->entries[i].state) & DDF_Failed))
1530 map[i] = 1;
1531 }
1532 }
a322f70c
DW		 1533}
1534
1535static int update_super_ddf(struct supertype *st, struct mdinfo *info,
1536 char *update,
1537 char *devname, int verbose,
1538 int uuid_set, char *homehost)
1539{
1540 /* For 'assemble' and 'force' we need to return non-zero if any
1541 * change was made. For others, the return value is ignored.
1542 * Update options are:
1543 * force-one : This device looks a bit old but needs to be included,
1544 * update age info appropriately.
1545 * assemble: clear any 'faulty' flag to allow this device to
1546 * be assembled.
1547 * force-array: Array is degraded but being forced, mark it clean
1548 * if that will be needed to assemble it.
1549 *
1550 * newdev: not used ????
1551 * grow: Array has gained a new device - this is currently for
1552 * linear only
1553 * resync: mark as dirty so a resync will happen.
59e36268 1554 * uuid: Change the uuid of the array to match what is given
a322f70c
DW		 1555 * homehost: update the recorded homehost
1556 * name: update the name - preserving the homehost
1557 * _reshape_progress: record new reshape_progress position.
1558 *
1559 * Following are not relevant for this version:
1560 * sparc2.2 : update from old dodgey metadata
1561 * super-minor: change the preferred_minor number
1562 * summaries: update redundant counters.
1563 */
1564 int rv = 0;
1565// struct ddf_super *ddf = st->sb;
7a7cc504 1566// struct vd_config *vd = find_vdcr(ddf, info->container_member);
a322f70c
DW		 1567// struct virtual_entry *ve = find_ve(ddf);
1568
a322f70c
DW		 1569 /* we don't need to handle "force-*" or "assemble" as
1570 * there is no need to 'trick' the kernel. We the metadata is
1571 * first updated to activate the array, all the implied modifications
1572 * will just happen.
1573 */
1574
1575 if (strcmp(update, "grow") == 0) {
1576 /* FIXME */
1e2b2765 1577 } else if (strcmp(update, "resync") == 0) {
a322f70c 1578// info->resync_checkpoint = 0;
1e2b2765 1579 } else if (strcmp(update, "homehost") == 0) {
a322f70c
DW		 1580 /* homehost is stored in controller->vendor_data,
1581 * or it is when we are the vendor
1582 */
1583// if (info->vendor_is_local)
1584// strcpy(ddf->controller.vendor_data, homehost);
1e2b2765 1585 rv = -1;
f49208ec 1586 } else if (strcmp(update, "name") == 0) {
a322f70c
DW		 1587 /* name is stored in virtual_entry->name */
1588// memset(ve->name, ' ', 16);
1589// strncpy(ve->name, info->name, 16);
1e2b2765 1590 rv = -1;
f49208ec 1591 } else if (strcmp(update, "_reshape_progress") == 0) {
a322f70c 1592 /* We don't support reshape yet */
f49208ec
N		 1593 } else if (strcmp(update, "assemble") == 0 ) {
1594 /* Do nothing, just succeed */
1595 rv = 0;
1e2b2765
N		 1596 } else
1597 rv = -1;
a322f70c
DW		 1598
1599// update_all_csum(ddf);
1600
1601 return rv;
1602}
1603
5f8097be
NB		 1604static void make_header_guid(char *guid)
1605{
1606 __u32 stamp;
5f8097be
NB		 1607 /* Create a DDF Header of Virtual Disk GUID */
1608
1609 /* 24 bytes of fiction required.
1610 * first 8 are a 'vendor-id' - "Linux-MD"
1611 * next 8 are controller type.. how about 0X DEAD BEEF 0000 0000
1612 * Remaining 8 random number plus timestamp
1613 */
1614 memcpy(guid, T10, sizeof(T10));
1615 stamp = __cpu_to_be32(0xdeadbeef);
1616 memcpy(guid+8, &stamp, 4);
1617 stamp = __cpu_to_be32(0);
1618 memcpy(guid+12, &stamp, 4);
1619 stamp = __cpu_to_be32(time(0) - DECADE);
1620 memcpy(guid+16, &stamp, 4);
bfb7ea78 1621 stamp = random32();
5f8097be 1622 memcpy(guid+20, &stamp, 4);
5f8097be 1623}
59e36268 1624
78e44928
NB		 1625static int init_super_ddf_bvd(struct supertype *st,
1626 mdu_array_info_t *info,
1627 unsigned long long size,
1628 char *name, char *homehost,
83cd1e97 1629 int *uuid, unsigned long long data_offset);
78e44928 1630
a322f70c
DW		 1631static int init_super_ddf(struct supertype *st,
1632 mdu_array_info_t *info,
1633 unsigned long long size, char *name, char *homehost,
83cd1e97 1634 int *uuid, unsigned long long data_offset)
a322f70c
DW		 1635{
1636 /* This is primarily called by Create when creating a new array.
1637 * We will then get add_to_super called for each component, and then
1638 * write_init_super called to write it out to each device.
1639 * For DDF, Create can create on fresh devices or on a pre-existing
1640 * array.
1641 * To create on a pre-existing array a different method will be called.
1642 * This one is just for fresh drives.
1643 *
1644 * We need to create the entire 'ddf' structure which includes:
1645 * DDF headers - these are easy.
1646 * Controller data - a Sector describing this controller .. not that
1647 * this is a controller exactly.
1648 * Physical Disk Record - one entry per device, so
1649 * leave plenty of space.
1650 * Virtual Disk Records - again, just leave plenty of space.
1651 * This just lists VDs, doesn't give details
1652 * Config records - describes the VDs that use this disk
1653 * DiskData - describes 'this' device.
1654 * BadBlockManagement - empty
1655 * Diag Space - empty
1656 * Vendor Logs - Could we put bitmaps here?
1657 *
1658 */
1659 struct ddf_super *ddf;
1660 char hostname[17];
1661 int hostlen;
a322f70c
DW		 1662 int max_phys_disks, max_virt_disks;
1663 unsigned long long sector;
1664 int clen;
1665 int i;
1666 int pdsize, vdsize;
1667 struct phys_disk *pd;
1668 struct virtual_disk *vd;
1669
83cd1e97
N		 1670 if (data_offset != INVALID_SECTORS) {
1671 fprintf(stderr, Name ": data-offset not supported by DDF\n");
1672 return 0;
1673 }
1674
78e44928 1675 if (st->sb)
83cd1e97
N		 1676 return init_super_ddf_bvd(st, info, size, name, homehost, uuid,
1677 data_offset);
ba7eb04f 1678
3d2c4fc7 1679 if (posix_memalign((void**)&ddf, 512, sizeof(*ddf)) != 0) {
e7b84f9d 1680 pr_err("%s could not allocate superblock\n", __func__);
3d2c4fc7
DW		 1681 return 0;
1682 }
6264b437 1683 memset(ddf, 0, sizeof(*ddf));
a322f70c
DW		 1684 ddf->dlist = NULL; /* no physical disks yet */
1685 ddf->conflist = NULL; /* No virtual disks yet */
955e9ea1
DW		 1686 st->sb = ddf;
1687
1688 if (info == NULL) {
1689 /* zeroing superblock */
1690 return 0;
1691 }
a322f70c
DW		 1692
1693 /* At least 32MB *must* be reserved for the ddf. So let's just
1694 * start 32MB from the end, and put the primary header there.
1695 * Don't do secondary for now.
1696 * We don't know exactly where that will be yet as it could be
1697 * different on each device. To just set up the lengths.
1698 *
1699 */
1700
1701 ddf->anchor.magic = DDF_HEADER_MAGIC;
5f8097be 1702 make_header_guid(ddf->anchor.guid);
a322f70c 1703
59e36268 1704 memcpy(ddf->anchor.revision, DDF_REVISION_2, 8);
a322f70c
DW		 1705 ddf->anchor.seq = __cpu_to_be32(1);
1706 ddf->anchor.timestamp = __cpu_to_be32(time(0) - DECADE);
1707 ddf->anchor.openflag = 0xFF;
1708 ddf->anchor.foreignflag = 0;
1709 ddf->anchor.enforcegroups = 0; /* Is this best?? */
1710 ddf->anchor.pad0 = 0xff;
1711 memset(ddf->anchor.pad1, 0xff, 12);
1712 memset(ddf->anchor.header_ext, 0xff, 32);
1713 ddf->anchor.primary_lba = ~(__u64)0;
1714 ddf->anchor.secondary_lba = ~(__u64)0;
1715 ddf->anchor.type = DDF_HEADER_ANCHOR;
1716 memset(ddf->anchor.pad2, 0xff, 3);
1717 ddf->anchor.workspace_len = __cpu_to_be32(32768); /* Must be reserved */
1718 ddf->anchor.workspace_lba = ~(__u64)0; /* Put this at bottom
1719 of 32M reserved.. */
1720 max_phys_disks = 1023; /* Should be enough */
1721 ddf->anchor.max_pd_entries = __cpu_to_be16(max_phys_disks);
1722 max_virt_disks = 255;
1723 ddf->anchor.max_vd_entries = __cpu_to_be16(max_virt_disks); /* ?? */
1724 ddf->anchor.max_partitions = __cpu_to_be16(64); /* ?? */
1725 ddf->max_part = 64;
8c3b8c2c 1726 ddf->mppe = 256;
59e36268
NB		 1727 ddf->conf_rec_len = 1 + ROUND_UP(ddf->mppe * (4+8), 512)/512;
1728 ddf->anchor.config_record_len = __cpu_to_be16(ddf->conf_rec_len);
1729 ddf->anchor.max_primary_element_entries = __cpu_to_be16(ddf->mppe);
a322f70c 1730 memset(ddf->anchor.pad3, 0xff, 54);
a322f70c
DW		 1731 /* controller sections is one sector long immediately
1732 * after the ddf header */
1733 sector = 1;
1734 ddf->anchor.controller_section_offset = __cpu_to_be32(sector);
1735 ddf->anchor.controller_section_length = __cpu_to_be32(1);
1736 sector += 1;
1737
1738 /* phys is 8 sectors after that */
1739 pdsize = ROUND_UP(sizeof(struct phys_disk) +
1740 sizeof(struct phys_disk_entry)*max_phys_disks,
1741 512);
1742 switch(pdsize/512) {
1743 case 2: case 8: case 32: case 128: case 512: break;
1744 default: abort();
1745 }
1746 ddf->anchor.phys_section_offset = __cpu_to_be32(sector);
1747 ddf->anchor.phys_section_length =
1748 __cpu_to_be32(pdsize/512); /* max_primary_element_entries/8 */
1749 sector += pdsize/512;
1750
1751 /* virt is another 32 sectors */
1752 vdsize = ROUND_UP(sizeof(struct virtual_disk) +
1753 sizeof(struct virtual_entry) * max_virt_disks,
1754 512);
1755 switch(vdsize/512) {
1756 case 2: case 8: case 32: case 128: case 512: break;
1757 default: abort();
1758 }
1759 ddf->anchor.virt_section_offset = __cpu_to_be32(sector);
1760 ddf->anchor.virt_section_length =
1761 __cpu_to_be32(vdsize/512); /* max_vd_entries/8 */
1762 sector += vdsize/512;
1763
59e36268 1764 clen = ddf->conf_rec_len * (ddf->max_part+1);
a322f70c
DW		 1765 ddf->anchor.config_section_offset = __cpu_to_be32(sector);
1766 ddf->anchor.config_section_length = __cpu_to_be32(clen);
1767 sector += clen;
1768
1769 ddf->anchor.data_section_offset = __cpu_to_be32(sector);
1770 ddf->anchor.data_section_length = __cpu_to_be32(1);
1771 sector += 1;
1772
1773 ddf->anchor.bbm_section_length = __cpu_to_be32(0);
1774 ddf->anchor.bbm_section_offset = __cpu_to_be32(0xFFFFFFFF);
1775 ddf->anchor.diag_space_length = __cpu_to_be32(0);
1776 ddf->anchor.diag_space_offset = __cpu_to_be32(0xFFFFFFFF);
1777 ddf->anchor.vendor_length = __cpu_to_be32(0);
1778 ddf->anchor.vendor_offset = __cpu_to_be32(0xFFFFFFFF);
1779
1780 memset(ddf->anchor.pad4, 0xff, 256);
1781
1782 memcpy(&ddf->primary, &ddf->anchor, 512);
1783 memcpy(&ddf->secondary, &ddf->anchor, 512);
1784
1785 ddf->primary.openflag = 1; /* I guess.. */
1786 ddf->primary.type = DDF_HEADER_PRIMARY;
1787
1788 ddf->secondary.openflag = 1; /* I guess.. */
1789 ddf->secondary.type = DDF_HEADER_SECONDARY;
1790
1791 ddf->active = &ddf->primary;
1792
1793 ddf->controller.magic = DDF_CONTROLLER_MAGIC;
1794
1795 /* 24 more bytes of fiction required.
1796 * first 8 are a 'vendor-id' - "Linux-MD"
1797 * Remaining 16 are serial number.... maybe a hostname would do?
1798 */
1799 memcpy(ddf->controller.guid, T10, sizeof(T10));
1ba6bff9
DW		 1800 gethostname(hostname, sizeof(hostname));
1801 hostname[sizeof(hostname) - 1] = 0;
a322f70c
DW		 1802 hostlen = strlen(hostname);
1803 memcpy(ddf->controller.guid + 24 - hostlen, hostname, hostlen);
1804 for (i = strlen(T10) ; i+hostlen < 24; i++)
1805 ddf->controller.guid[i] = ' ';
1806
1807 ddf->controller.type.vendor_id = __cpu_to_be16(0xDEAD);
1808 ddf->controller.type.device_id = __cpu_to_be16(0xBEEF);
1809 ddf->controller.type.sub_vendor_id = 0;
1810 ddf->controller.type.sub_device_id = 0;
1811 memcpy(ddf->controller.product_id, "What Is My PID??", 16);
1812 memset(ddf->controller.pad, 0xff, 8);
1813 memset(ddf->controller.vendor_data, 0xff, 448);
a9e1c11d
N		 1814 if (homehost && strlen(homehost) < 440)
1815 strcpy((char*)ddf->controller.vendor_data, homehost);
a322f70c 1816
3d2c4fc7 1817 if (posix_memalign((void**)&pd, 512, pdsize) != 0) {
e7b84f9d 1818 pr_err("%s could not allocate pd\n", __func__);
3d2c4fc7
DW		 1819 return 0;
1820 }
6416d527 1821 ddf->phys = pd;
a322f70c
DW		 1822 ddf->pdsize = pdsize;
1823
1824 memset(pd, 0xff, pdsize);
1825 memset(pd, 0, sizeof(*pd));
076515ba 1826 pd->magic = DDF_PHYS_RECORDS_MAGIC;
a322f70c
DW		 1827 pd->used_pdes = __cpu_to_be16(0);
1828 pd->max_pdes = __cpu_to_be16(max_phys_disks);
1829 memset(pd->pad, 0xff, 52);
1830
3d2c4fc7 1831 if (posix_memalign((void**)&vd, 512, vdsize) != 0) {
e7b84f9d 1832 pr_err("%s could not allocate vd\n", __func__);
3d2c4fc7
DW		 1833 return 0;
1834 }
6416d527 1835 ddf->virt = vd;
a322f70c
DW		 1836 ddf->vdsize = vdsize;
1837 memset(vd, 0, vdsize);
1838 vd->magic = DDF_VIRT_RECORDS_MAGIC;
1839 vd->populated_vdes = __cpu_to_be16(0);
1840 vd->max_vdes = __cpu_to_be16(max_virt_disks);
1841 memset(vd->pad, 0xff, 52);
1842
5f8097be
NB		 1843 for (i=0; i<max_virt_disks; i++)
1844 memset(&vd->entries[i], 0xff, sizeof(struct virtual_entry));
1845
a322f70c 1846 st->sb = ddf;
18a2f463 1847 ddf->updates_pending = 1;
a322f70c
DW		 1848 return 1;
1849}
1850
5f8097be
NB		 1851static int chunk_to_shift(int chunksize)
1852{
1853 return ffs(chunksize/512)-1;
1854}
1855
1856static int level_to_prl(int level)
1857{
1858 switch (level) {
1859 case LEVEL_LINEAR: return DDF_CONCAT;
1860 case 0: return DDF_RAID0;
1861 case 1: return DDF_RAID1;
1862 case 4: return DDF_RAID4;
1863 case 5: return DDF_RAID5;
1864 case 6: return DDF_RAID6;
1865 default: return -1;
1866 }
1867}
613b0d17 1868
5f8097be
NB		 1869static int layout_to_rlq(int level, int layout, int raiddisks)
1870{
1871 switch(level) {
1872 case 0:
1873 return DDF_RAID0_SIMPLE;
1874 case 1:
1875 switch(raiddisks) {
1876 case 2: return DDF_RAID1_SIMPLE;
1877 case 3: return DDF_RAID1_MULTI;
1878 default: return -1;
1879 }
1880 case 4:
1881 switch(layout) {
1882 case 0: return DDF_RAID4_N;
1883 }
1884 break;
1885 case 5:
5f8097be
NB		 1886 switch(layout) {
1887 case ALGORITHM_LEFT_ASYMMETRIC:
1888 return DDF_RAID5_N_RESTART;
1889 case ALGORITHM_RIGHT_ASYMMETRIC:
b640a252 1890 return DDF_RAID5_0_RESTART;
5f8097be
NB		 1891 case ALGORITHM_LEFT_SYMMETRIC:
1892 return DDF_RAID5_N_CONTINUE;
1893 case ALGORITHM_RIGHT_SYMMETRIC:
1894 return -1; /* not mentioned in standard */
1895 }
b640a252
N		 1896 case 6:
1897 switch(layout) {
1898 case ALGORITHM_ROTATING_N_RESTART:
1899 return DDF_RAID5_N_RESTART;
1900 case ALGORITHM_ROTATING_ZERO_RESTART:
1901 return DDF_RAID6_0_RESTART;
1902 case ALGORITHM_ROTATING_N_CONTINUE:
1903 return DDF_RAID5_N_CONTINUE;
1904 }
5f8097be
NB		 1905 }
1906 return -1;
1907}
1908
598f0d58
NB		 1909static int rlq_to_layout(int rlq, int prl, int raiddisks)
1910{
1911 switch(prl) {
1912 case DDF_RAID0:
1913 return 0; /* hopefully rlq == DDF_RAID0_SIMPLE */
1914 case DDF_RAID1:
1915 return 0; /* hopefully rlq == SIMPLE or MULTI depending
1916 on raiddisks*/
1917 case DDF_RAID4:
1918 switch(rlq) {
1919 case DDF_RAID4_N:
1920 return 0;
1921 default:
1922 /* not supported */
1923 return -1; /* FIXME this isn't checked */
1924 }
1925 case DDF_RAID5:
598f0d58
NB		 1926 switch(rlq) {
1927 case DDF_RAID5_N_RESTART:
1928 return ALGORITHM_LEFT_ASYMMETRIC;
1929 case DDF_RAID5_0_RESTART:
1930 return ALGORITHM_RIGHT_ASYMMETRIC;
1931 case DDF_RAID5_N_CONTINUE:
1932 return ALGORITHM_LEFT_SYMMETRIC;
1933 default:
1934 return -1;
1935 }
59e36268
NB		 1936 case DDF_RAID6:
1937 switch(rlq) {
1938 case DDF_RAID5_N_RESTART:
b640a252 1939 return ALGORITHM_ROTATING_N_RESTART;
59e36268 1940 case DDF_RAID6_0_RESTART:
b640a252 1941 return ALGORITHM_ROTATING_ZERO_RESTART;
59e36268 1942 case DDF_RAID5_N_CONTINUE:
b640a252 1943 return ALGORITHM_ROTATING_N_CONTINUE;
59e36268
NB		 1944 default:
1945 return -1;
1946 }
598f0d58
NB		 1947 }
1948 return -1;
1949}
1950
0e600426 1951#ifndef MDASSEMBLE
59e36268
NB		 1952struct extent {
1953 unsigned long long start, size;
1954};
78e44928 1955static int cmp_extent(const void *av, const void *bv)
59e36268
NB		 1956{
1957 const struct extent *a = av;
1958 const struct extent *b = bv;
1959 if (a->start < b->start)
1960 return -1;
1961 if (a->start > b->start)
1962 return 1;
1963 return 0;
1964}
1965
78e44928 1966static struct extent *get_extents(struct ddf_super *ddf, struct dl *dl)
59e36268
NB		 1967{
1968 /* find a list of used extents on the give physical device
1969 * (dnum) of the given ddf.
1970 * Return a malloced array of 'struct extent'
1971
613b0d17 1972 * FIXME ignore DDF_Legacy devices?
59e36268
NB		 1973
1974 */
1975 struct extent *rv;
1976 int n = 0;
f21e18ca 1977 unsigned int i, j;
59e36268 1978
503975b9 1979 rv = xmalloc(sizeof(struct extent) * (ddf->max_part + 2));
59e36268
NB		 1980
1981 for (i = 0; i < ddf->max_part; i++) {
1982 struct vcl *v = dl->vlist[i];
1983 if (v == NULL)
1984 continue;
f21e18ca 1985 for (j = 0; j < v->conf.prim_elmnt_count; j++)
59e36268
NB		 1986 if (v->conf.phys_refnum[j] == dl->disk.refnum) {
1987 /* This device plays role 'j' in 'v'. */
1988 rv[n].start = __be64_to_cpu(v->lba_offset[j]);
1989 rv[n].size = __be64_to_cpu(v->conf.blocks);
1990 n++;
1991 break;
1992 }
1993 }
1994 qsort(rv, n, sizeof(*rv), cmp_extent);
1995
1996 rv[n].start = __be64_to_cpu(ddf->phys->entries[dl->pdnum].config_size);
1997 rv[n].size = 0;
1998 return rv;
1999}
0e600426 2000#endif
59e36268 2001
5f8097be
NB		 2002static int init_super_ddf_bvd(struct supertype *st,
2003 mdu_array_info_t *info,
2004 unsigned long long size,
2005 char *name, char *homehost,
83cd1e97 2006 int *uuid, unsigned long long data_offset)
5f8097be
NB		 2007{
2008 /* We are creating a BVD inside a pre-existing container.
2009 * so st->sb is already set.
2010 * We need to create a new vd_config and a new virtual_entry
2011 */
2012 struct ddf_super *ddf = st->sb;
f21e18ca 2013 unsigned int venum;
5f8097be
NB		 2014 struct virtual_entry *ve;
2015 struct vcl *vcl;
2016 struct vd_config *vc;
5f8097be
NB		 2017
2018 if (__be16_to_cpu(ddf->virt->populated_vdes)
2019 >= __be16_to_cpu(ddf->virt->max_vdes)) {
e7b84f9d
N		 2020 pr_err("This ddf already has the "
2021 "maximum of %d virtual devices\n",
2022 __be16_to_cpu(ddf->virt->max_vdes));
5f8097be
NB		 2023 return 0;
2024 }
2025
97c9c100
N		 2026 if (name)
2027 for (venum = 0; venum < __be16_to_cpu(ddf->virt->max_vdes); venum++)
2028 if (!all_ff(ddf->virt->entries[venum].guid)) {
2029 char *n = ddf->virt->entries[venum].name;
2030
2031 if (strncmp(name, n, 16) == 0) {
e7b84f9d
N		 2032 pr_err("This ddf already"
2033 " has an array called %s\n",
2034 name);
97c9c100
N		 2035 return 0;
2036 }
2037 }
2038
5f8097be
NB		 2039 for (venum = 0; venum < __be16_to_cpu(ddf->virt->max_vdes); venum++)
2040 if (all_ff(ddf->virt->entries[venum].guid))
2041 break;
2042 if (venum == __be16_to_cpu(ddf->virt->max_vdes)) {
e7b84f9d 2043 pr_err("Cannot find spare slot for "
613b0d17 2044 "virtual disk - DDF is corrupt\n");
5f8097be
NB		 2045 return 0;
2046 }
2047 ve = &ddf->virt->entries[venum];
2048
2049 /* A Virtual Disk GUID contains the T10 Vendor ID, controller type,
2050 * timestamp, random number
2051 */
2052 make_header_guid(ve->guid);
2053 ve->unit = __cpu_to_be16(info->md_minor);
2054 ve->pad0 = 0xFFFF;
2055 ve->guid_crc = crc32(0, (unsigned char*)ddf->anchor.guid, DDF_GUID_LEN);
2056 ve->type = 0;
7a7cc504
NB		 2057 ve->state = DDF_state_degraded; /* Will be modified as devices are added */
2058 if (info->state & 1) /* clean */
2059 ve->init_state = DDF_init_full;
2060 else
2061 ve->init_state = DDF_init_not;
2062
5f8097be
NB		 2063 memset(ve->pad1, 0xff, 14);
2064 memset(ve->name, ' ', 16);
2065 if (name)
2066 strncpy(ve->name, name, 16);
2067 ddf->virt->populated_vdes =
2068 __cpu_to_be16(__be16_to_cpu(ddf->virt->populated_vdes)+1);
2069
2070 /* Now create a new vd_config */
3d2c4fc7
DW		 2071 if (posix_memalign((void**)&vcl, 512,
2072 (offsetof(struct vcl, conf) + ddf->conf_rec_len * 512)) != 0) {
e7b84f9d 2073 pr_err("%s could not allocate vd_config\n", __func__);
3d2c4fc7
DW		 2074 return 0;
2075 }
8c3b8c2c 2076 vcl->lba_offset = (__u64*) &vcl->conf.phys_refnum[ddf->mppe];
59e36268
NB		 2077 vcl->vcnum = venum;
2078 vcl->block_sizes = NULL; /* FIXME not for CONCAT */
8ec5d685 2079 vcl->other_bvds = NULL;
5f8097be
NB		 2080
2081 vc = &vcl->conf;
2082
2083 vc->magic = DDF_VD_CONF_MAGIC;
2084 memcpy(vc->guid, ve->guid, DDF_GUID_LEN);
2085 vc->timestamp = __cpu_to_be32(time(0)-DECADE);
2086 vc->seqnum = __cpu_to_be32(1);
2087 memset(vc->pad0, 0xff, 24);
2088 vc->prim_elmnt_count = __cpu_to_be16(info->raid_disks);
2089 vc->chunk_shift = chunk_to_shift(info->chunk_size);
2090 vc->prl = level_to_prl(info->level);
2091 vc->rlq = layout_to_rlq(info->level, info->layout, info->raid_disks);
2092 vc->sec_elmnt_count = 1;
2093 vc->sec_elmnt_seq = 0;
2094 vc->srl = 0;
2095 vc->blocks = __cpu_to_be64(info->size * 2);
2096 vc->array_blocks = __cpu_to_be64(
2097 calc_array_size(info->level, info->raid_disks, info->layout,
2098 info->chunk_size, info->size*2));
2099 memset(vc->pad1, 0xff, 8);
2100 vc->spare_refs[0] = 0xffffffff;
2101 vc->spare_refs[1] = 0xffffffff;
2102 vc->spare_refs[2] = 0xffffffff;
2103 vc->spare_refs[3] = 0xffffffff;
2104 vc->spare_refs[4] = 0xffffffff;
2105 vc->spare_refs[5] = 0xffffffff;
2106 vc->spare_refs[6] = 0xffffffff;
2107 vc->spare_refs[7] = 0xffffffff;
2108 memset(vc->cache_pol, 0, 8);
2109 vc->bg_rate = 0x80;
2110 memset(vc->pad2, 0xff, 3);
2111 memset(vc->pad3, 0xff, 52);
2112 memset(vc->pad4, 0xff, 192);
2113 memset(vc->v0, 0xff, 32);
2114 memset(vc->v1, 0xff, 32);
2115 memset(vc->v2, 0xff, 16);
2116 memset(vc->v3, 0xff, 16);
2117 memset(vc->vendor, 0xff, 32);
598f0d58 2118
8c3b8c2c 2119 memset(vc->phys_refnum, 0xff, 4*ddf->mppe);
e5a2a3cf 2120 memset(vc->phys_refnum+ddf->mppe, 0x00, 8*ddf->mppe);
5f8097be
NB		 2121
2122 vcl->next = ddf->conflist;
2123 ddf->conflist = vcl;
d2ca6449 2124 ddf->currentconf = vcl;
18a2f463 2125 ddf->updates_pending = 1;
5f8097be
NB		 2126 return 1;
2127}
2128
0e600426 2129#ifndef MDASSEMBLE
5f8097be
NB		 2130static void add_to_super_ddf_bvd(struct supertype *st,
2131 mdu_disk_info_t *dk, int fd, char *devname)
2132{
2133 /* fd and devname identify a device with-in the ddf container (st).
2134 * dk identifies a location in the new BVD.
2135 * We need to find suitable free space in that device and update
2136 * the phys_refnum and lba_offset for the newly created vd_config.
2137 * We might also want to update the type in the phys_disk
5575e7d9 2138 * section.
8592f29d
N		 2139 *
2140 * Alternately: fd == -1 and we have already chosen which device to
2141 * use and recorded in dlist->raid_disk;
5f8097be
NB		 2142 */
2143 struct dl *dl;
2144 struct ddf_super *ddf = st->sb;
2145 struct vd_config *vc;
2146 __u64 *lba_offset;
f21e18ca
N		 2147 unsigned int working;
2148 unsigned int i;
59e36268
NB		 2149 unsigned long long blocks, pos, esize;
2150 struct extent *ex;
5f8097be 2151
8592f29d
N		 2152 if (fd == -1) {
2153 for (dl = ddf->dlist; dl ; dl = dl->next)
2154 if (dl->raiddisk == dk->raid_disk)
2155 break;
2156 } else {
2157 for (dl = ddf->dlist; dl ; dl = dl->next)
2158 if (dl->major == dk->major &&
2159 dl->minor == dk->minor)
2160 break;
2161 }
5f8097be
NB		 2162 if (!dl || ! (dk->state & (1<<MD_DISK_SYNC)))
2163 return;
2164
d2ca6449
NB		 2165 vc = &ddf->currentconf->conf;
2166 lba_offset = ddf->currentconf->lba_offset;
59e36268
NB		 2167
2168 ex = get_extents(ddf, dl);
2169 if (!ex)
2170 return;
2171
2172 i = 0; pos = 0;
2173 blocks = __be64_to_cpu(vc->blocks);
d2ca6449
NB		 2174 if (ddf->currentconf->block_sizes)
2175 blocks = ddf->currentconf->block_sizes[dk->raid_disk];
59e36268
NB		 2176
2177 do {
2178 esize = ex[i].start - pos;
2179 if (esize >= blocks)
2180 break;
2181 pos = ex[i].start + ex[i].size;
2182 i++;
2183 } while (ex[i-1].size);
2184
2185 free(ex);
2186 if (esize < blocks)
2187 return;
2188
d2ca6449 2189 ddf->currentdev = dk->raid_disk;
5f8097be 2190 vc->phys_refnum[dk->raid_disk] = dl->disk.refnum;
59e36268 2191 lba_offset[dk->raid_disk] = __cpu_to_be64(pos);
5f8097be 2192
f21e18ca 2193 for (i = 0; i < ddf->max_part ; i++)
5575e7d9
NB		 2194 if (dl->vlist[i] == NULL)
2195 break;
2196 if (i == ddf->max_part)
2197 return;
d2ca6449 2198 dl->vlist[i] = ddf->currentconf;
5f8097be 2199
8592f29d
N		 2200 if (fd >= 0)
2201 dl->fd = fd;
2202 if (devname)
2203 dl->devname = devname;
7a7cc504
NB		 2204
2205 /* Check how many working raid_disks, and if we can mark
2206 * array as optimal yet
2207 */
2208 working = 0;
5575e7d9 2209
f21e18ca 2210 for (i = 0; i < __be16_to_cpu(vc->prim_elmnt_count); i++)
7a7cc504
NB		 2211 if (vc->phys_refnum[i] != 0xffffffff)
2212 working++;
59e36268 2213
5575e7d9 2214 /* Find which virtual_entry */
d2ca6449 2215 i = ddf->currentconf->vcnum;
7a7cc504 2216 if (working == __be16_to_cpu(vc->prim_elmnt_count))
5575e7d9
NB		 2217 ddf->virt->entries[i].state =
2218 (ddf->virt->entries[i].state & ~DDF_state_mask)
7a7cc504
NB		 2219 | DDF_state_optimal;
2220
2221 if (vc->prl == DDF_RAID6 &&
2222 working+1 == __be16_to_cpu(vc->prim_elmnt_count))
5575e7d9
NB		 2223 ddf->virt->entries[i].state =
2224 (ddf->virt->entries[i].state & ~DDF_state_mask)
7a7cc504 2225 | DDF_state_part_optimal;
5575e7d9
NB		 2226
2227 ddf->phys->entries[dl->pdnum].type &= ~__cpu_to_be16(DDF_Global_Spare);
2228 ddf->phys->entries[dl->pdnum].type |= __cpu_to_be16(DDF_Active_in_VD);
18a2f463 2229 ddf->updates_pending = 1;
5f8097be
NB		 2230}
2231
a322f70c
DW		 2232/* add a device to a container, either while creating it or while
2233 * expanding a pre-existing container
2234 */
f20c3968 2235static int add_to_super_ddf(struct supertype *st,
72ca9bcf
N		 2236 mdu_disk_info_t *dk, int fd, char *devname,
2237 unsigned long long data_offset)
a322f70c
DW		 2238{
2239 struct ddf_super *ddf = st->sb;
2240 struct dl *dd;
2241 time_t now;
2242 struct tm *tm;
2243 unsigned long long size;
2244 struct phys_disk_entry *pde;
f21e18ca 2245 unsigned int n, i;
a322f70c 2246 struct stat stb;
90fa1a29 2247 __u32 *tptr;
a322f70c 2248
78e44928
NB		 2249 if (ddf->currentconf) {
2250 add_to_super_ddf_bvd(st, dk, fd, devname);
f20c3968 2251 return 0;
78e44928
NB		 2252 }
2253
a322f70c
DW		 2254 /* This is device numbered dk->number. We need to create
2255 * a phys_disk entry and a more detailed disk_data entry.
2256 */
2257 fstat(fd, &stb);
3d2c4fc7
DW		 2258 if (posix_memalign((void**)&dd, 512,
2259 sizeof(*dd) + sizeof(dd->vlist[0]) * ddf->max_part) != 0) {
e7b84f9d
N		 2260 pr_err("%s could allocate buffer for new disk, aborting\n",
2261 __func__);
f20c3968 2262 return 1;
3d2c4fc7 2263 }
a322f70c
DW		 2264 dd->major = major(stb.st_rdev);
2265 dd->minor = minor(stb.st_rdev);
2266 dd->devname = devname;
a322f70c 2267 dd->fd = fd;
b2280677 2268 dd->spare = NULL;
a322f70c
DW		 2269
2270 dd->disk.magic = DDF_PHYS_DATA_MAGIC;
2271 now = time(0);
2272 tm = localtime(&now);
2273 sprintf(dd->disk.guid, "%8s%04d%02d%02d",
2274 T10, tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday);
90fa1a29
JS		 2275 tptr = (__u32 *)(dd->disk.guid + 16);
2276 *tptr++ = random32();
2277 *tptr = random32();
a322f70c 2278
59e36268
NB		 2279 do {
2280 /* Cannot be bothered finding a CRC of some irrelevant details*/
bfb7ea78 2281 dd->disk.refnum = random32();
f21e18ca
N		 2282 for (i = __be16_to_cpu(ddf->active->max_pd_entries);
2283 i > 0; i--)
2284 if (ddf->phys->entries[i-1].refnum == dd->disk.refnum)
59e36268 2285 break;
f21e18ca 2286 } while (i > 0);
59e36268 2287
a322f70c
DW		 2288 dd->disk.forced_ref = 1;
2289 dd->disk.forced_guid = 1;
2290 memset(dd->disk.vendor, ' ', 32);
2291 memcpy(dd->disk.vendor, "Linux", 5);
2292 memset(dd->disk.pad, 0xff, 442);
b2280677 2293 for (i = 0; i < ddf->max_part ; i++)
a322f70c
DW		 2294 dd->vlist[i] = NULL;
2295
2296 n = __be16_to_cpu(ddf->phys->used_pdes);
2297 pde = &ddf->phys->entries[n];
5575e7d9
NB		 2298 dd->pdnum = n;
2299
2cc2983d
N		 2300 if (st->update_tail) {
2301 int len = (sizeof(struct phys_disk) +
2302 sizeof(struct phys_disk_entry));
2303 struct phys_disk *pd;
2304
503975b9 2305 pd = xmalloc(len);
2cc2983d
N		 2306 pd->magic = DDF_PHYS_RECORDS_MAGIC;
2307 pd->used_pdes = __cpu_to_be16(n);
2308 pde = &pd->entries[0];
2309 dd->mdupdate = pd;
2310 } else {
2311 n++;
2312 ddf->phys->used_pdes = __cpu_to_be16(n);
2313 }
a322f70c
DW		 2314
2315 memcpy(pde->guid, dd->disk.guid, DDF_GUID_LEN);
2316 pde->refnum = dd->disk.refnum;
5575e7d9 2317 pde->type = __cpu_to_be16(DDF_Forced_PD_GUID | DDF_Global_Spare);
a322f70c
DW		 2318 pde->state = __cpu_to_be16(DDF_Online);
2319 get_dev_size(fd, NULL, &size);
2320 /* We are required to reserve 32Meg, and record the size in sectors */
2321 pde->config_size = __cpu_to_be64( (size - 32*1024*1024) / 512);
2322 sprintf(pde->path, "%17.17s","Information: nil") ;
2323 memset(pde->pad, 0xff, 6);
2324
d2ca6449 2325 dd->size = size >> 9;
2cc2983d
N		 2326 if (st->update_tail) {
2327 dd->next = ddf->add_list;
2328 ddf->add_list = dd;
2329 } else {
2330 dd->next = ddf->dlist;
2331 ddf->dlist = dd;
2332 ddf->updates_pending = 1;
2333 }
f20c3968
DW		 2334
2335 return 0;
a322f70c
DW		 2336}
2337
4dd968cc
N		 2338static int remove_from_super_ddf(struct supertype *st, mdu_disk_info_t *dk)
2339{
2340 struct ddf_super *ddf = st->sb;
2341 struct dl *dl;
2342
2343 /* mdmon has noticed that this disk (dk->major/dk->minor) has
2344 * disappeared from the container.
2345 * We need to arrange that it disappears from the metadata and
2346 * internal data structures too.
2347 * Most of the work is done by ddf_process_update which edits
2348 * the metadata and closes the file handle and attaches the memory
2349 * where free_updates will free it.
2350 */
2351 for (dl = ddf->dlist; dl ; dl = dl->next)
2352 if (dl->major == dk->major &&
2353 dl->minor == dk->minor)
2354 break;
2355 if (!dl)
2356 return -1;
2357
2358 if (st->update_tail) {
2359 int len = (sizeof(struct phys_disk) +
2360 sizeof(struct phys_disk_entry));
2361 struct phys_disk *pd;
2362
503975b9 2363 pd = xmalloc(len);
4dd968cc
N		 2364 pd->magic = DDF_PHYS_RECORDS_MAGIC;
2365 pd->used_pdes = __cpu_to_be16(dl->pdnum);
2366 pd->entries[0].state = __cpu_to_be16(DDF_Missing);
2367 append_metadata_update(st, pd, len);
2368 }
2369 return 0;
2370}
2371
a322f70c
DW		 2372/*
2373 * This is the write_init_super method for a ddf container. It is
2374 * called when creating a container or adding another device to a
2375 * container.
2376 */
42d5dfd9 2377#define NULL_CONF_SZ 4096
18a2f463 2378
7f798aca 2379static int __write_ddf_structure(struct dl *d, struct ddf_super *ddf, __u8 type,
2380 char *null_aligned)
a322f70c 2381{
7f798aca 2382 unsigned long long sector;
2383 struct ddf_header *header;
2384 int fd, i, n_config, conf_size;
2385
2386 fd = d->fd;
2387
2388 switch (type) {
2389 case DDF_HEADER_PRIMARY:
2390 header = &ddf->primary;
2391 sector = __be64_to_cpu(header->primary_lba);
2392 break;
2393 case DDF_HEADER_SECONDARY:
2394 header = &ddf->secondary;
2395 sector = __be64_to_cpu(header->secondary_lba);
2396 break;
2397 default:
2398 return 0;
2399 }
2400
2401 header->type = type;
2402 header->openflag = 0;
2403 header->crc = calc_crc(header, 512);
2404
2405 lseek64(fd, sector<<9, 0);
2406 if (write(fd, header, 512) < 0)
2407 return 0;
2408
2409 ddf->controller.crc = calc_crc(&ddf->controller, 512);
2410 if (write(fd, &ddf->controller, 512) < 0)
2411 return 0;
a322f70c 2412
7f798aca 2413 ddf->phys->crc = calc_crc(ddf->phys, ddf->pdsize);
2414 if (write(fd, ddf->phys, ddf->pdsize) < 0)
2415 return 0;
2416 ddf->virt->crc = calc_crc(ddf->virt, ddf->vdsize);
2417 if (write(fd, ddf->virt, ddf->vdsize) < 0)
2418 return 0;
2419
2420 /* Now write lots of config records. */
2421 n_config = ddf->max_part;
2422 conf_size = ddf->conf_rec_len * 512;
2423 for (i = 0 ; i <= n_config ; i++) {
2424 struct vcl *c = d->vlist[i];
2425 if (i == n_config)
2426 c = (struct vcl *)d->spare;
2427
2428 if (c) {
0175cbf6 2429 c->conf.seqnum = ddf->primary.seq;
7f798aca 2430 c->conf.crc = calc_crc(&c->conf, conf_size);
2431 if (write(fd, &c->conf, conf_size) < 0)
2432 break;
2433 } else {
2434 unsigned int togo = conf_size;
2435 while (togo > NULL_CONF_SZ) {
2436 if (write(fd, null_aligned, NULL_CONF_SZ) < 0)
2437 break;
2438 togo -= NULL_CONF_SZ;
2439 }
2440 if (write(fd, null_aligned, togo) < 0)
2441 break;
2442 }
2443 }
2444 if (i <= n_config)
2445 return 0;
2446
2447 d->disk.crc = calc_crc(&d->disk, 512);
2448 if (write(fd, &d->disk, 512) < 0)
2449 return 0;
2450
2451 return 1;
2452}
2453
2454static int __write_init_super_ddf(struct supertype *st)
2455{
a322f70c 2456 struct ddf_super *ddf = st->sb;
a322f70c 2457 struct dl *d;
175593bf
DW		 2458 int attempts = 0;
2459 int successes = 0;
7f798aca 2460 unsigned long long size;
42d5dfd9 2461 char *null_aligned;
0175cbf6 2462 __u32 seq;
42d5dfd9
JS		 2463
2464 if (posix_memalign((void**)&null_aligned, 4096, NULL_CONF_SZ) != 0) {
2465 return -ENOMEM;
2466 }
2467 memset(null_aligned, 0xff, NULL_CONF_SZ);
a322f70c 2468
0175cbf6 2469 if (ddf->primary.seq != 0xffffffff)
2470 seq = __cpu_to_be32(__be32_to_cpu(ddf->primary.seq)+1);
2471 else if (ddf->secondary.seq != 0xffffffff)
2472 seq = __cpu_to_be32(__be32_to_cpu(ddf->secondary.seq)+1);
2473 else
2474 seq = __cpu_to_be32(1);
2475
175593bf
DW		 2476 /* try to write updated metadata,
2477 * if we catch a failure move on to the next disk
2478 */
a322f70c
DW		 2479 for (d = ddf->dlist; d; d=d->next) {
2480 int fd = d->fd;
2481
2482 if (fd < 0)
2483 continue;
2484
175593bf 2485 attempts++;
a322f70c
DW		 2486 /* We need to fill in the primary, (secondary) and workspace
2487 * lba's in the headers, set their checksums,
2488 * Also checksum phys, virt....
2489 *
2490 * Then write everything out, finally the anchor is written.
2491 */
2492 get_dev_size(fd, NULL, &size);
2493 size /= 512;
097bcf00 2494 if (d->workspace_lba != 0)
2495 ddf->anchor.workspace_lba = d->workspace_lba;
2496 else
2497 ddf->anchor.workspace_lba =
2498 __cpu_to_be64(size - 32*1024*2);
2499 if (d->primary_lba != 0)
2500 ddf->anchor.primary_lba = d->primary_lba;
2501 else
2502 ddf->anchor.primary_lba =
2503 __cpu_to_be64(size - 16*1024*2);
2504 if (d->secondary_lba != 0)
2505 ddf->anchor.secondary_lba = d->secondary_lba;
2506 else
2507 ddf->anchor.secondary_lba =
2508 __cpu_to_be64(size - 32*1024*2);
0175cbf6 2509 ddf->anchor.seq = seq;
a322f70c
DW		 2510 memcpy(&ddf->primary, &ddf->anchor, 512);
2511 memcpy(&ddf->secondary, &ddf->anchor, 512);
2512
2513 ddf->anchor.openflag = 0xFF; /* 'open' means nothing */
2514 ddf->anchor.seq = 0xFFFFFFFF; /* no sequencing in anchor */
2515 ddf->anchor.crc = calc_crc(&ddf->anchor, 512);
2516
7f798aca 2517 if (!__write_ddf_structure(d, ddf, DDF_HEADER_PRIMARY,
2518 null_aligned))
175593bf 2519 continue;
a322f70c 2520
7f798aca 2521 if (!__write_ddf_structure(d, ddf, DDF_HEADER_SECONDARY,
2522 null_aligned))
175593bf 2523 continue;
a322f70c 2524
a322f70c 2525 lseek64(fd, (size-1)*512, SEEK_SET);
175593bf
DW		 2526 if (write(fd, &ddf->anchor, 512) < 0)
2527 continue;
2528 successes++;
2529 }
42d5dfd9 2530 free(null_aligned);
175593bf 2531
175593bf 2532 return attempts != successes;
a322f70c 2533}
7a7cc504
NB		 2534
2535static int write_init_super_ddf(struct supertype *st)
2536{
9b1fb677
DW		 2537 struct ddf_super *ddf = st->sb;
2538 struct vcl *currentconf = ddf->currentconf;
2539
2540 /* we are done with currentconf reset it to point st at the container */
2541 ddf->currentconf = NULL;
edd8d13c
NB		 2542
2543 if (st->update_tail) {
2544 /* queue the virtual_disk and vd_config as metadata updates */
2545 struct virtual_disk *vd;
2546 struct vd_config *vc;
edd8d13c
NB		 2547 int len;
2548
9b1fb677 2549 if (!currentconf) {
2cc2983d
N		 2550 int len = (sizeof(struct phys_disk) +
2551 sizeof(struct phys_disk_entry));
2552
2553 /* adding a disk to the container. */
2554 if (!ddf->add_list)
2555 return 0;
2556
2557 append_metadata_update(st, ddf->add_list->mdupdate, len);
2558 ddf->add_list->mdupdate = NULL;
2559 return 0;
2560 }
2561
2562 /* Newly created VD */
2563
edd8d13c
NB		 2564 /* First the virtual disk. We have a slightly fake header */
2565 len = sizeof(struct virtual_disk) + sizeof(struct virtual_entry);
503975b9 2566 vd = xmalloc(len);
edd8d13c 2567 *vd = *ddf->virt;
9b1fb677
DW		 2568 vd->entries[0] = ddf->virt->entries[currentconf->vcnum];
2569 vd->populated_vdes = __cpu_to_be16(currentconf->vcnum);
edd8d13c
NB		 2570 append_metadata_update(st, vd, len);
2571
2572 /* Then the vd_config */
2573 len = ddf->conf_rec_len * 512;
503975b9 2574 vc = xmalloc(len);
9b1fb677 2575 memcpy(vc, &currentconf->conf, len);
edd8d13c
NB		 2576 append_metadata_update(st, vc, len);
2577
2578 /* FIXME I need to close the fds! */
2579 return 0;
613b0d17 2580 } else {
d682f344
N		 2581 struct dl *d;
2582 for (d = ddf->dlist; d; d=d->next)
ba728be7 2583 while (Kill(d->devname, NULL, 0, -1, 1) == 0);
1cc7f4fe 2584 return __write_init_super_ddf(st);
d682f344 2585 }
7a7cc504
NB		 2586}
2587
a322f70c
DW		 2588#endif
2589
387fcd59
N		 2590static __u64 avail_size_ddf(struct supertype *st, __u64 devsize,
2591 unsigned long long data_offset)
a322f70c
DW		 2592{
2593 /* We must reserve the last 32Meg */
2594 if (devsize <= 32*1024*2)
2595 return 0;
2596 return devsize - 32*1024*2;
2597}
2598
2599#ifndef MDASSEMBLE
8592f29d
N		 2600
2601static int reserve_space(struct supertype *st, int raiddisks,
2602 unsigned long long size, int chunk,
2603 unsigned long long *freesize)
2604{
2605 /* Find 'raiddisks' spare extents at least 'size' big (but
2606 * only caring about multiples of 'chunk') and remember
2607 * them.
2608 * If the cannot be found, fail.
2609 */
2610 struct dl *dl;
2611 struct ddf_super *ddf = st->sb;
2612 int cnt = 0;
2613
2614 for (dl = ddf->dlist; dl ; dl=dl->next) {
613b0d17 2615 dl->raiddisk = -1;
8592f29d
N		 2616 dl->esize = 0;
2617 }
2618 /* Now find largest extent on each device */
2619 for (dl = ddf->dlist ; dl ; dl=dl->next) {
2620 struct extent *e = get_extents(ddf, dl);
2621 unsigned long long pos = 0;
2622 int i = 0;
2623 int found = 0;
2624 unsigned long long minsize = size;
2625
2626 if (size == 0)
2627 minsize = chunk;
2628
2629 if (!e)
2630 continue;
2631 do {
2632 unsigned long long esize;
2633 esize = e[i].start - pos;
2634 if (esize >= minsize) {
2635 found = 1;
2636 minsize = esize;
2637 }
2638 pos = e[i].start + e[i].size;
2639 i++;
2640 } while (e[i-1].size);
2641 if (found) {
2642 cnt++;
2643 dl->esize = minsize;
2644 }
2645 free(e);
2646 }
2647 if (cnt < raiddisks) {
e7b84f9d 2648 pr_err("not enough devices with space to create array.\n");
8592f29d
N		 2649 return 0; /* No enough free spaces large enough */
2650 }
2651 if (size == 0) {
2652 /* choose the largest size of which there are at least 'raiddisk' */
2653 for (dl = ddf->dlist ; dl ; dl=dl->next) {
2654 struct dl *dl2;
2655 if (dl->esize <= size)
2656 continue;
2657 /* This is bigger than 'size', see if there are enough */
2658 cnt = 0;
7b80ad6a 2659 for (dl2 = ddf->dlist; dl2 ; dl2=dl2->next)
8592f29d
N		 2660 if (dl2->esize >= dl->esize)
2661 cnt++;
2662 if (cnt >= raiddisks)
2663 size = dl->esize;
2664 }
2665 if (chunk) {
2666 size = size / chunk;
2667 size *= chunk;
2668 }
2669 *freesize = size;
2670 if (size < 32) {
e7b84f9d 2671 pr_err("not enough spare devices to create array.\n");
8592f29d
N		 2672 return 0;
2673 }
2674 }
2675 /* We have a 'size' of which there are enough spaces.
2676 * We simply do a first-fit */
2677 cnt = 0;
2678 for (dl = ddf->dlist ; dl && cnt < raiddisks ; dl=dl->next) {
2679 if (dl->esize < size)
2680 continue;
613b0d17 2681
8592f29d
N		 2682 dl->raiddisk = cnt;
2683 cnt++;
2684 }
2685 return 1;
2686}
2687
2c514b71
NB		 2688static int
2689validate_geometry_ddf_container(struct supertype *st,
2690 int level, int layout, int raiddisks,
2691 int chunk, unsigned long long size,
af4348dd 2692 unsigned long long data_offset,
2c514b71
NB		 2693 char *dev, unsigned long long *freesize,
2694 int verbose);
78e44928
NB		 2695
2696static int validate_geometry_ddf_bvd(struct supertype *st,
2697 int level, int layout, int raiddisks,
c21e737b 2698 int *chunk, unsigned long long size,
af4348dd 2699 unsigned long long data_offset,
2c514b71
NB		 2700 char *dev, unsigned long long *freesize,
2701 int verbose);
78e44928
NB		 2702
2703static int validate_geometry_ddf(struct supertype *st,
2c514b71 2704 int level, int layout, int raiddisks,
c21e737b 2705 int *chunk, unsigned long long size,
af4348dd 2706 unsigned long long data_offset,
2c514b71
NB		 2707 char *dev, unsigned long long *freesize,
2708 int verbose)
a322f70c
DW		 2709{
2710 int fd;
2711 struct mdinfo *sra;
2712 int cfd;
2713
2714 /* ddf potentially supports lots of things, but it depends on
2715 * what devices are offered (and maybe kernel version?)
2716 * If given unused devices, we will make a container.
2717 * If given devices in a container, we will make a BVD.
2718 * If given BVDs, we make an SVD, changing all the GUIDs in the process.
2719 */
2720
bb7295f1
N		 2721 if (chunk && *chunk == UnSet)
2722 *chunk = DEFAULT_CHUNK;
2723
542ef4ec 2724 if (level == -1000000) level = LEVEL_CONTAINER;
a322f70c 2725 if (level == LEVEL_CONTAINER) {
78e44928
NB		 2726 /* Must be a fresh device to add to a container */
2727 return validate_geometry_ddf_container(st, level, layout,
c21e737b 2728 raiddisks, chunk?*chunk:0,
af4348dd
N		 2729 size, data_offset, dev,
2730 freesize,
2c514b71 2731 verbose);
5f8097be
NB		 2732 }
2733
78e44928
NB		 2734 if (!dev) {
2735 /* Initial sanity check. Exclude illegal levels. */
2736 int i;
2737 for (i=0; ddf_level_num[i].num1 != MAXINT; i++)
2738 if (ddf_level_num[i].num2 == level)
2739 break;
b42f577a
N		 2740 if (ddf_level_num[i].num1 == MAXINT) {
2741 if (verbose)
e7b84f9d 2742 pr_err("DDF does not support level %d arrays\n",
613b0d17 2743 level);
78e44928 2744 return 0;
b42f577a 2745 }
78e44928 2746 /* Should check layout? etc */
8592f29d
N		 2747
2748 if (st->sb && freesize) {
2749 /* --create was given a container to create in.
2750 * So we need to check that there are enough
2751 * free spaces and return the amount of space.
2752 * We may as well remember which drives were
2753 * chosen so that add_to_super/getinfo_super
2754 * can return them.
2755 */
c21e737b 2756 return reserve_space(st, raiddisks, size, chunk?*chunk:0, freesize);
8592f29d 2757 }
a322f70c 2758 return 1;
78e44928 2759 }
a322f70c 2760
8592f29d
N		 2761 if (st->sb) {
2762 /* A container has already been opened, so we are
2763 * creating in there. Maybe a BVD, maybe an SVD.
2764 * Should make a distinction one day.
2765 */
2766 return validate_geometry_ddf_bvd(st, level, layout, raiddisks,
af4348dd
N		 2767 chunk, size, data_offset, dev,
2768 freesize,
8592f29d
N		 2769 verbose);
2770 }
78e44928
NB		 2771 /* This is the first device for the array.
2772 * If it is a container, we read it in and do automagic allocations,
2773 * no other devices should be given.
2774 * Otherwise it must be a member device of a container, and we
2775 * do manual allocation.
2776 * Later we should check for a BVD and make an SVD.
a322f70c 2777 */
a322f70c
DW		 2778 fd = open(dev, O_RDONLY|O_EXCL, 0);
2779 if (fd >= 0) {
4dd2df09 2780 sra = sysfs_read(fd, NULL, GET_VERSION);
a322f70c
DW		 2781 close(fd);
2782 if (sra && sra->array.major_version == -1 &&
78e44928
NB		 2783 strcmp(sra->text_version, "ddf") == 0) {
2784
2785 /* load super */
2786 /* find space for 'n' devices. */
2787 /* remember the devices */
2788 /* Somehow return the fact that we have enough */
a322f70c
DW		 2789 }
2790
2c514b71 2791 if (verbose)
e7b84f9d
N		 2792 pr_err("ddf: Cannot create this array "
2793 "on device %s - a container is required.\n",
2794 dev);
a322f70c
DW		 2795 return 0;
2796 }
2797 if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) {
2c514b71 2798 if (verbose)
e7b84f9d 2799 pr_err("ddf: Cannot open %s: %s\n",
613b0d17 2800 dev, strerror(errno));
a322f70c
DW		 2801 return 0;
2802 }
2803 /* Well, it is in use by someone, maybe a 'ddf' container. */
2804 cfd = open_container(fd);
2805 if (cfd < 0) {
2806 close(fd);
2c514b71 2807 if (verbose)
e7b84f9d 2808 pr_err("ddf: Cannot use %s: %s\n",
613b0d17 2809 dev, strerror(EBUSY));
a322f70c
DW		 2810 return 0;
2811 }
4dd2df09 2812 sra = sysfs_read(cfd, NULL, GET_VERSION);
a322f70c
DW		 2813 close(fd);
2814 if (sra && sra->array.major_version == -1 &&
2815 strcmp(sra->text_version, "ddf") == 0) {
2816 /* This is a member of a ddf container. Load the container
2817 * and try to create a bvd
2818 */
2819 struct ddf_super *ddf;
e1902a7b 2820 if (load_super_ddf_all(st, cfd, (void **)&ddf, NULL) == 0) {
5f8097be 2821 st->sb = ddf;
4dd2df09 2822 strcpy(st->container_devnm, fd2devnm(cfd));
a322f70c 2823 close(cfd);
78e44928 2824 return validate_geometry_ddf_bvd(st, level, layout,
a322f70c 2825 raiddisks, chunk, size,
af4348dd 2826 data_offset,
2c514b71
NB		 2827 dev, freesize,
2828 verbose);
a322f70c
DW		 2829 }
2830 close(cfd);
c42ec1ed
DW		 2831 } else /* device may belong to a different container */
2832 return 0;
2833
a322f70c
DW		 2834 return 1;
2835}
2836
2c514b71
NB		 2837static int
2838validate_geometry_ddf_container(struct supertype *st,
2839 int level, int layout, int raiddisks,
2840 int chunk, unsigned long long size,
af4348dd 2841 unsigned long long data_offset,
2c514b71
NB		 2842 char *dev, unsigned long long *freesize,
2843 int verbose)
a322f70c
DW		 2844{
2845 int fd;
2846 unsigned long long ldsize;
2847
2848 if (level != LEVEL_CONTAINER)
2849 return 0;
2850 if (!dev)
2851 return 1;
2852
2853 fd = open(dev, O_RDONLY|O_EXCL, 0);
2854 if (fd < 0) {
2c514b71 2855 if (verbose)
e7b84f9d 2856 pr_err("ddf: Cannot open %s: %s\n",
613b0d17 2857 dev, strerror(errno));
a322f70c
DW		 2858 return 0;
2859 }
2860 if (!get_dev_size(fd, dev, &ldsize)) {
2861 close(fd);
2862 return 0;
2863 }
2864 close(fd);
2865
387fcd59 2866 *freesize = avail_size_ddf(st, ldsize >> 9, INVALID_SECTORS);
ea17e7aa
N		 2867 if (*freesize == 0)
2868 return 0;
a322f70c
DW		 2869
2870 return 1;
2871}
2872
78e44928
NB		 2873static int validate_geometry_ddf_bvd(struct supertype *st,
2874 int level, int layout, int raiddisks,
c21e737b 2875 int *chunk, unsigned long long size,
af4348dd 2876 unsigned long long data_offset,
2c514b71
NB		 2877 char *dev, unsigned long long *freesize,
2878 int verbose)
a322f70c
DW		 2879{
2880 struct stat stb;
2881 struct ddf_super *ddf = st->sb;
2882 struct dl *dl;
5f8097be
NB		 2883 unsigned long long pos = 0;
2884 unsigned long long maxsize;
2885 struct extent *e;
2886 int i;
a322f70c 2887 /* ddf/bvd supports lots of things, but not containers */
b42f577a
N		 2888 if (level == LEVEL_CONTAINER) {
2889 if (verbose)
e7b84f9d 2890 pr_err("DDF cannot create a container within an container\n");
a322f70c 2891 return 0;
b42f577a 2892 }
a322f70c
DW		 2893 /* We must have the container info already read in. */
2894 if (!ddf)
2895 return 0;
2896
5f8097be
NB		 2897 if (!dev) {
2898 /* General test: make sure there is space for
2899 * 'raiddisks' device extents of size 'size'.
2900 */
2901 unsigned long long minsize = size;
2902 int dcnt = 0;
2903 if (minsize == 0)
2904 minsize = 8;
2905 for (dl = ddf->dlist; dl ; dl = dl->next)
2906 {
2907 int found = 0;
7e1432fb 2908 pos = 0;
5f8097be
NB		 2909
2910 i = 0;
2911 e = get_extents(ddf, dl);
2912 if (!e) continue;
2913 do {
2914 unsigned long long esize;
2915 esize = e[i].start - pos;
2916 if (esize >= minsize)
2917 found = 1;
2918 pos = e[i].start + e[i].size;
2919 i++;
2920 } while (e[i-1].size);
2921 if (found)
2922 dcnt++;
2923 free(e);
2924 }
2925 if (dcnt < raiddisks) {
2c514b71 2926 if (verbose)
e7b84f9d
N		 2927 pr_err("ddf: Not enough devices with "
2928 "space for this array (%d < %d)\n",
2929 dcnt, raiddisks);
5f8097be
NB		 2930 return 0;
2931 }
2932 return 1;
2933 }
a322f70c
DW		 2934 /* This device must be a member of the set */
2935 if (stat(dev, &stb) < 0)
2936 return 0;
2937 if ((S_IFMT & stb.st_mode) != S_IFBLK)
2938 return 0;
2939 for (dl = ddf->dlist ; dl ; dl = dl->next) {
f21e18ca
N		 2940 if (dl->major == (int)major(stb.st_rdev) &&
2941 dl->minor == (int)minor(stb.st_rdev))
a322f70c
DW		 2942 break;
2943 }
5f8097be 2944 if (!dl) {
2c514b71 2945 if (verbose)
e7b84f9d 2946 pr_err("ddf: %s is not in the "
613b0d17
N		 2947 "same DDF set\n",
2948 dev);
5f8097be
NB		 2949 return 0;
2950 }
2951 e = get_extents(ddf, dl);
2952 maxsize = 0;
2953 i = 0;
2954 if (e) do {
613b0d17
N		 2955 unsigned long long esize;
2956 esize = e[i].start - pos;
2957 if (esize >= maxsize)
2958 maxsize = esize;
2959 pos = e[i].start + e[i].size;
2960 i++;
2961 } while (e[i-1].size);
5f8097be 2962 *freesize = maxsize;
a322f70c
DW		 2963 // FIXME here I am
2964
2965 return 1;
2966}
59e36268 2967
a322f70c 2968static int load_super_ddf_all(struct supertype *st, int fd,
e1902a7b 2969 void **sbp, char *devname)
a322f70c
DW		 2970{
2971 struct mdinfo *sra;
2972 struct ddf_super *super;
2973 struct mdinfo *sd, *best = NULL;
2974 int bestseq = 0;
2975 int seq;
2976 char nm[20];
2977 int dfd;
2978
b526e52d 2979 sra = sysfs_read(fd, 0, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE);
a322f70c
DW		 2980 if (!sra)
2981 return 1;
2982 if (sra->array.major_version != -1 ||
2983 sra->array.minor_version != -2 ||
2984 strcmp(sra->text_version, "ddf") != 0)
2985 return 1;
2986
6416d527 2987 if (posix_memalign((void**)&super, 512, sizeof(*super)) != 0)
a322f70c 2988 return 1;
a2349791 2989 memset(super, 0, sizeof(*super));
a322f70c
DW		 2990
2991 /* first, try each device, and choose the best ddf */
2992 for (sd = sra->devs ; sd ; sd = sd->next) {
2993 int rv;
2994 sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor);
7a7cc504
NB		 2995 dfd = dev_open(nm, O_RDONLY);
2996 if (dfd < 0)
a322f70c
DW		 2997 return 2;
2998 rv = load_ddf_headers(dfd, super, NULL);
7a7cc504 2999 close(dfd);
a322f70c
DW		 3000 if (rv == 0) {
3001 seq = __be32_to_cpu(super->active->seq);
3002 if (super->active->openflag)
3003 seq--;
3004 if (!best || seq > bestseq) {
3005 bestseq = seq;
3006 best = sd;
3007 }
3008 }
3009 }
3010 if (!best)
3011 return 1;
3012 /* OK, load this ddf */
3013 sprintf(nm, "%d:%d", best->disk.major, best->disk.minor);
3014 dfd = dev_open(nm, O_RDONLY);
7a7cc504 3015 if (dfd < 0)
a322f70c
DW		 3016 return 1;
3017 load_ddf_headers(dfd, super, NULL);
3018 load_ddf_global(dfd, super, NULL);
3019 close(dfd);
3020 /* Now we need the device-local bits */
3021 for (sd = sra->devs ; sd ; sd = sd->next) {
3d2c4fc7
DW		 3022 int rv;
3023
a322f70c 3024 sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor);
e1902a7b 3025 dfd = dev_open(nm, O_RDWR);
7a7cc504 3026 if (dfd < 0)
a322f70c 3027 return 2;
3d2c4fc7
DW		 3028 rv = load_ddf_headers(dfd, super, NULL);
3029 if (rv == 0)
e1902a7b 3030 rv = load_ddf_local(dfd, super, NULL, 1);
3d2c4fc7
DW		 3031 if (rv)
3032 return 1;
a322f70c 3033 }
33414a01 3034
a322f70c
DW		 3035 *sbp = super;
3036 if (st->ss == NULL) {
78e44928 3037 st->ss = &super_ddf;
a322f70c
DW		 3038 st->minor_version = 0;
3039 st->max_devs = 512;
3040 }
4dd2df09 3041 strcpy(st->container_devnm, fd2devnm(fd));
a322f70c
DW		 3042 return 0;
3043}
2b959fbf
N		 3044
3045static int load_container_ddf(struct supertype *st, int fd,
3046 char *devname)
3047{
3048 return load_super_ddf_all(st, fd, &st->sb, devname);
3049}
3050
0e600426 3051#endif /* MDASSEMBLE */
a322f70c 3052
a5c7adb3 3053static int check_secondary(const struct vcl *vc)
3054{
3055 const struct vd_config *conf = &vc->conf;
3056 int i;
3057
3058 /* The only DDF secondary RAID level md can support is
3059 * RAID 10, if the stripe sizes and Basic volume sizes
3060 * are all equal.
3061 * Other configurations could in theory be supported by exposing
3062 * the BVDs to user space and using device mapper for the secondary
3063 * mapping. So far we don't support that.
3064 */
3065
3066 __u64 sec_elements[4] = {0, 0, 0, 0};
3067#define __set_sec_seen(n) (sec_elements[(n)>>6] |= (1<<((n)&63)))
3068#define __was_sec_seen(n) ((sec_elements[(n)>>6] & (1<<((n)&63))) != 0)
3069
3070 if (vc->other_bvds == NULL) {
3071 pr_err("No BVDs for secondary RAID found\n");
3072 return -1;
3073 }
3074 if (conf->prl != DDF_RAID1) {
3075 pr_err("Secondary RAID level only supported for mirrored BVD\n");
3076 return -1;
3077 }
3078 if (conf->srl != DDF_2STRIPED && conf->srl != DDF_2SPANNED) {
3079 pr_err("Secondary RAID level %d is unsupported\n",
3080 conf->srl);
3081 return -1;
3082 }
3083 __set_sec_seen(conf->sec_elmnt_seq);
3084 for (i = 0; i < conf->sec_elmnt_count-1; i++) {
3085 const struct vd_config *bvd = vc->other_bvds[i];
3086 if (bvd == NULL) {
3087 pr_err("BVD %d is missing", i+1);
3088 return -1;
3089 }
3090 if (bvd->srl != conf->srl) {
3091 pr_err("Inconsistent secondary RAID level across BVDs\n");
3092 return -1;
3093 }
3094 if (bvd->prl != conf->prl) {
3095 pr_err("Different RAID levels for BVDs are unsupported\n");
3096 return -1;
3097 }
3098 if (bvd->prim_elmnt_count != conf->prim_elmnt_count) {
3099 pr_err("All BVDs must have the same number of primary elements\n");
3100 return -1;
3101 }
3102 if (bvd->chunk_shift != conf->chunk_shift) {
3103 pr_err("Different strip sizes for BVDs are unsupported\n");
3104 return -1;
3105 }
3106 if (bvd->array_blocks != conf->array_blocks) {
3107 pr_err("Different BVD sizes are unsupported\n");
3108 return -1;
3109 }
3110 __set_sec_seen(bvd->sec_elmnt_seq);
3111 }
3112 for (i = 0; i < conf->sec_elmnt_count; i++) {
3113 if (!__was_sec_seen(i)) {
3114 pr_err("BVD %d is missing\n", i);
3115 return -1;
3116 }
3117 }
3118 return 0;
3119}
3120
8a38db86 3121#define NO_SUCH_REFNUM (0xFFFFFFFF)
3122static unsigned int get_pd_index_from_refnum(const struct vcl *vc,
3123 __u32 refnum, unsigned int nmax)
3124{
3125 unsigned int i;
3126 for (i = 0 ; i < nmax ; i++)
3127 if (vc->conf.phys_refnum[i] == refnum)
3128 return i;
3129 return NO_SUCH_REFNUM;
3130}
3131
00bbdbda 3132static struct mdinfo *container_content_ddf(struct supertype *st, char *subarray)
598f0d58
NB		 3133{
3134 /* Given a container loaded by load_super_ddf_all,
3135 * extract information about all the arrays into
3136 * an mdinfo tree.
3137 *
3138 * For each vcl in conflist: create an mdinfo, fill it in,
3139 * then look for matching devices (phys_refnum) in dlist
3140 * and create appropriate device mdinfo.
3141 */
3142 struct ddf_super *ddf = st->sb;
3143 struct mdinfo *rest = NULL;
3144 struct vcl *vc;
3145
3146 for (vc = ddf->conflist ; vc ; vc=vc->next)
3147 {
f21e18ca
N		 3148 unsigned int i;
3149 unsigned int j;
598f0d58 3150 struct mdinfo *this;
00bbdbda 3151 char *ep;
90fa1a29 3152 __u32 *cptr;
8a38db86 3153 unsigned int pd;
00bbdbda
N		 3154
3155 if (subarray &&
3156 (strtoul(subarray, &ep, 10) != vc->vcnum ||
3157 *ep != '\0'))
3158 continue;
3159
a5c7adb3 3160 if (vc->conf.sec_elmnt_count > 1) {
3161 if (check_secondary(vc) != 0)
3162 continue;
3163 }
3164
503975b9 3165 this = xcalloc(1, sizeof(*this));
598f0d58
NB		 3166 this->next = rest;
3167 rest = this;
3168
598f0d58
NB		 3169 this->array.level = map_num1(ddf_level_num, vc->conf.prl);
3170 this->array.raid_disks =
3171 __be16_to_cpu(vc->conf.prim_elmnt_count);
60f18132
NB		 3172 this->array.layout = rlq_to_layout(vc->conf.rlq, vc->conf.prl,
3173 this->array.raid_disks);
598f0d58 3174 this->array.md_minor = -1;
f35f2525
N		 3175 this->array.major_version = -1;
3176 this->array.minor_version = -2;
90fa1a29
JS		 3177 cptr = (__u32 *)(vc->conf.guid + 16);
3178 this->array.ctime = DECADE + __be32_to_cpu(*cptr);
598f0d58
NB		 3179 this->array.utime = DECADE +
3180 __be32_to_cpu(vc->conf.timestamp);
3181 this->array.chunk_size = 512 << vc->conf.chunk_shift;
3182
59e36268 3183 i = vc->vcnum;
7a7cc504
NB		 3184 if ((ddf->virt->entries[i].state & DDF_state_inconsistent) ||
3185 (ddf->virt->entries[i].init_state & DDF_initstate_mask) !=
ed9d66aa 3186 DDF_init_full) {
598f0d58 3187 this->array.state = 0;
ed9d66aa
NB		 3188 this->resync_start = 0;
3189 } else {
598f0d58 3190 this->array.state = 1;
b7528a20 3191 this->resync_start = MaxSector;
ed9d66aa 3192 }
db42fa9b
N		 3193 memcpy(this->name, ddf->virt->entries[i].name, 16);
3194 this->name[16]=0;
3195 for(j=0; j<16; j++)
3196 if (this->name[j] == ' ')
3197 this->name[j] = 0;
598f0d58
NB		 3198
3199 memset(this->uuid, 0, sizeof(this->uuid));
3200 this->component_size = __be64_to_cpu(vc->conf.blocks);
3201 this->array.size = this->component_size / 2;
5f2aace8 3202 this->container_member = i;
598f0d58 3203
c5afc314
N		 3204 ddf->currentconf = vc;
3205 uuid_from_super_ddf(st, this->uuid);
3206 ddf->currentconf = NULL;
3207
60f18132 3208 sprintf(this->text_version, "/%s/%d",
4dd2df09 3209 st->container_devnm, this->container_member);
60f18132 3210
8a38db86 3211 for (pd = 0; pd < __be16_to_cpu(ddf->phys->used_pdes); pd++) {
598f0d58
NB		 3212 struct mdinfo *dev;
3213 struct dl *d;
fa033bec 3214 int stt;
598f0d58 3215
8a38db86 3216 if (ddf->phys->entries[pd].refnum == 0xFFFFFFFF)
bc17324f 3217 continue;
0cf5ef67
N		 3218
3219 stt = __be16_to_cpu(ddf->phys->entries[pd].state);
fa033bec
N		 3220 if ((stt & (DDF_Online|DDF_Failed|DDF_Rebuilding))
3221 != DDF_Online)
3222 continue;
3223
8a38db86 3224 i = get_pd_index_from_refnum(
3225 vc, ddf->phys->entries[pd].refnum, ddf->mppe);
3226 if (i == NO_SUCH_REFNUM)
3227 continue;
3228
fa033bec 3229 this->array.working_disks++;
bc17324f 3230
0cf5ef67 3231 for (d = ddf->dlist; d ; d=d->next)
8a38db86 3232 if (d->disk.refnum ==
3233 ddf->phys->entries[pd].refnum)
0cf5ef67
N		 3234 break;
3235 if (d == NULL)
3236 /* Haven't found that one yet, maybe there are others */
3237 continue;
3238
503975b9 3239 dev = xcalloc(1, sizeof(*dev));
598f0d58
NB		 3240 dev->next = this->devs;
3241 this->devs = dev;
3242
3243 dev->disk.number = __be32_to_cpu(d->disk.refnum);
3244 dev->disk.major = d->major;
3245 dev->disk.minor = d->minor;
3246 dev->disk.raid_disk = i;
3247 dev->disk.state = (1<<MD_DISK_SYNC)|(1<<MD_DISK_ACTIVE);
d23534e4 3248 dev->recovery_start = MaxSector;
598f0d58 3249
120f7677
NB		 3250 dev->events = __be32_to_cpu(ddf->primary.seq);
3251 dev->data_offset = __be64_to_cpu(vc->lba_offset[i]);
598f0d58
NB		 3252 dev->component_size = __be64_to_cpu(vc->conf.blocks);
3253 if (d->devname)
3254 strcpy(dev->name, d->devname);
3255 }
3256 }
3257 return rest;
3258}
3259
955e9ea1 3260static int store_super_ddf(struct supertype *st, int fd)
a322f70c 3261{
955e9ea1 3262 struct ddf_super *ddf = st->sb;
a322f70c 3263 unsigned long long dsize;
6416d527 3264 void *buf;
3d2c4fc7 3265 int rc;
a322f70c 3266
955e9ea1
DW		 3267 if (!ddf)
3268 return 1;
3269
3270 /* ->dlist and ->conflist will be set for updates, currently not
3271 * supported
3272 */
3273 if (ddf->dlist || ddf->conflist)
3274 return 1;
3275
a322f70c
DW		 3276 if (!get_dev_size(fd, NULL, &dsize))
3277 return 1;
3278
3d2c4fc7
DW		 3279 if (posix_memalign(&buf, 512, 512) != 0)
3280 return 1;
6416d527
NB		 3281 memset(buf, 0, 512);
3282
a322f70c 3283 lseek64(fd, dsize-512, 0);
3d2c4fc7 3284 rc = write(fd, buf, 512);
6416d527 3285 free(buf);
3d2c4fc7
DW		 3286 if (rc < 0)
3287 return 1;
a322f70c
DW		 3288 return 0;
3289}
3290
a19c88b8
NB		 3291static int compare_super_ddf(struct supertype *st, struct supertype *tst)
3292{
3293 /*
3294 * return:
3295 * 0 same, or first was empty, and second was copied
3296 * 1 second had wrong number
3297 * 2 wrong uuid
3298 * 3 wrong other info
3299 */
3300 struct ddf_super *first = st->sb;
3301 struct ddf_super *second = tst->sb;
3302
3303 if (!first) {
3304 st->sb = tst->sb;
3305 tst->sb = NULL;
3306 return 0;
3307 }
3308
3309 if (memcmp(first->anchor.guid, second->anchor.guid, DDF_GUID_LEN) != 0)
3310 return 2;
3311
3312 /* FIXME should I look at anything else? */
3313 return 0;
3314}
3315
0e600426 3316#ifndef MDASSEMBLE
4e5528c6
NB		 3317/*
3318 * A new array 'a' has been started which claims to be instance 'inst'
3319 * within container 'c'.
3320 * We need to confirm that the array matches the metadata in 'c' so
3321 * that we don't corrupt any metadata.
3322 */
cba0191b 3323static int ddf_open_new(struct supertype *c, struct active_array *a, char *inst)
549e9569 3324{
2c514b71 3325 dprintf("ddf: open_new %s\n", inst);
cba0191b 3326 a->info.container_member = atoi(inst);
549e9569
NB		 3327 return 0;
3328}
3329
4e5528c6
NB		 3330/*
3331 * The array 'a' is to be marked clean in the metadata.
ed9d66aa 3332 * If '->resync_start' is not ~(unsigned long long)0, then the array is only
4e5528c6
NB		 3333 * clean up to the point (in sectors). If that cannot be recorded in the
3334 * metadata, then leave it as dirty.
3335 *
3336 * For DDF, we need to clear the DDF_state_inconsistent bit in the
3337 * !global! virtual_disk.virtual_entry structure.
3338 */
01f157d7 3339static int ddf_set_array_state(struct active_array *a, int consistent)
549e9569 3340{
4e5528c6
NB		 3341 struct ddf_super *ddf = a->container->sb;
3342 int inst = a->info.container_member;
18a2f463 3343 int old = ddf->virt->entries[inst].state;
01f157d7
N		 3344 if (consistent == 2) {
3345 /* Should check if a recovery should be started FIXME */
3346 consistent = 1;
b7941fd6 3347 if (!is_resync_complete(&a->info))
01f157d7
N		 3348 consistent = 0;
3349 }
ed9d66aa
NB		 3350 if (consistent)
3351 ddf->virt->entries[inst].state &= ~DDF_state_inconsistent;
3352 else
4e5528c6 3353 ddf->virt->entries[inst].state |= DDF_state_inconsistent;
18a2f463
NB		 3354 if (old != ddf->virt->entries[inst].state)
3355 ddf->updates_pending = 1;
3356
3357 old = ddf->virt->entries[inst].init_state;
ed9d66aa 3358 ddf->virt->entries[inst].init_state &= ~DDF_initstate_mask;
b7941fd6 3359 if (is_resync_complete(&a->info))
ed9d66aa 3360 ddf->virt->entries[inst].init_state |= DDF_init_full;
b7941fd6 3361 else if (a->info.resync_start == 0)
ed9d66aa 3362 ddf->virt->entries[inst].init_state |= DDF_init_not;
4e5528c6 3363 else
ed9d66aa 3364 ddf->virt->entries[inst].init_state |= DDF_init_quick;
18a2f463
NB		 3365 if (old != ddf->virt->entries[inst].init_state)
3366 ddf->updates_pending = 1;
ed9d66aa 3367
2c514b71 3368 dprintf("ddf mark %d %s %llu\n", inst, consistent?"clean":"dirty",
b7941fd6 3369 a->info.resync_start);
01f157d7 3370 return consistent;
fd7cde1b
DW		 3371}
3372
e1316fab 3373#define container_of(ptr, type, member) ({ \
5d500228
N		 3374 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
3375 (type *)( (char *)__mptr - offsetof(type,member) );})
7a7cc504
NB		 3376/*
3377 * The state of each disk is stored in the global phys_disk structure
3378 * in phys_disk.entries[n].state.
3379 * This makes various combinations awkward.
3380 * - When a device fails in any array, it must be failed in all arrays
3381 * that include a part of this device.
3382 * - When a component is rebuilding, we cannot include it officially in the
3383 * array unless this is the only array that uses the device.
3384 *
3385 * So: when transitioning:
3386 * Online -> failed, just set failed flag. monitor will propagate
3387 * spare -> online, the device might need to be added to the array.
3388 * spare -> failed, just set failed. Don't worry if in array or not.
3389 */
8d45d196 3390static void ddf_set_disk(struct active_array *a, int n, int state)
549e9569 3391{
7a7cc504 3392 struct ddf_super *ddf = a->container->sb;
f21e18ca 3393 unsigned int inst = a->info.container_member;
7a7cc504
NB		 3394 struct vd_config *vc = find_vdcr(ddf, inst);
3395 int pd = find_phys(ddf, vc->phys_refnum[n]);
3396 int i, st, working;
e1316fab
N		 3397 struct mdinfo *mdi;
3398 struct dl *dl;
7a7cc504
NB		 3399
3400 if (vc == NULL) {
2c514b71 3401 dprintf("ddf: cannot find instance %d!!\n", inst);
7a7cc504
NB		 3402 return;
3403 }
e1316fab
N		 3404 /* Find the matching slot in 'info'. */
3405 for (mdi = a->info.devs; mdi; mdi = mdi->next)
3406 if (mdi->disk.raid_disk == n)
3407 break;
3408 if (!mdi)
3409 return;
3410
3411 /* and find the 'dl' entry corresponding to that. */
3412 for (dl = ddf->dlist; dl; dl = dl->next)
77632af9
N		 3413 if (mdi->state_fd >= 0 &&
3414 mdi->disk.major == dl->major &&
e1316fab
N		 3415 mdi->disk.minor == dl->minor)
3416 break;
3417 if (!dl)
3418 return;
3419
3420 if (pd < 0 || pd != dl->pdnum) {
3421 /* disk doesn't currently exist or has changed.
3422 * If it is now in_sync, insert it. */
7a7cc504 3423 if ((state & DS_INSYNC) && ! (state & DS_FAULTY)) {
e1316fab
N		 3424 struct vcl *vcl;
3425 pd = dl->pdnum;
3426 vc->phys_refnum[n] = dl->disk.refnum;
3427 vcl = container_of(vc, struct vcl, conf);
3428 vcl->lba_offset[n] = mdi->data_offset;
3429 ddf->phys->entries[pd].type &=
3430 ~__cpu_to_be16(DDF_Global_Spare);
3431 ddf->phys->entries[pd].type |=
3432 __cpu_to_be16(DDF_Active_in_VD);
3433 ddf->updates_pending = 1;
7a7cc504
NB		 3434 }
3435 } else {
18a2f463 3436 int old = ddf->phys->entries[pd].state;
7a7cc504
NB		 3437 if (state & DS_FAULTY)
3438 ddf->phys->entries[pd].state |= __cpu_to_be16(DDF_Failed);
3439 if (state & DS_INSYNC) {
3440 ddf->phys->entries[pd].state |= __cpu_to_be16(DDF_Online);
3441 ddf->phys->entries[pd].state &= __cpu_to_be16(~DDF_Rebuilding);
3442 }
18a2f463
NB		 3443 if (old != ddf->phys->entries[pd].state)
3444 ddf->updates_pending = 1;
7a7cc504
NB		 3445 }
3446
2c514b71 3447 dprintf("ddf: set_disk %d to %x\n", n, state);
7e1432fb 3448
7a7cc504
NB		 3449 /* Now we need to check the state of the array and update
3450 * virtual_disk.entries[n].state.
3451 * It needs to be one of "optimal", "degraded", "failed".
3452 * I don't understand 'deleted' or 'missing'.
3453 */
3454 working = 0;
3455 for (i=0; i < a->info.array.raid_disks; i++) {
3456 pd = find_phys(ddf, vc->phys_refnum[i]);
3457 if (pd < 0)
3458 continue;
57632f4a
NB		 3459 st = __be16_to_cpu(ddf->phys->entries[pd].state);
3460 if ((st & (DDF_Online|DDF_Failed|DDF_Rebuilding))
7a7cc504
NB		 3461 == DDF_Online)
3462 working++;
3463 }
3464 state = DDF_state_degraded;
3465 if (working == a->info.array.raid_disks)
3466 state = DDF_state_optimal;
3467 else switch(vc->prl) {
613b0d17
N		 3468 case DDF_RAID0:
3469 case DDF_CONCAT:
3470 case DDF_JBOD:
7a7cc504 3471 state = DDF_state_failed;
613b0d17
N		 3472 break;
3473 case DDF_RAID1:
3474 if (working == 0)
3475 state = DDF_state_failed;
3476 else if (working == 2 && state == DDF_state_degraded)
3477 state = DDF_state_part_optimal;
3478 break;
3479 case DDF_RAID4:
3480 case DDF_RAID5:
3481 if (working < a->info.array.raid_disks-1)
3482 state = DDF_state_failed;
3483 break;
3484 case DDF_RAID6:
3485 if (working < a->info.array.raid_disks-2)
3486 state = DDF_state_failed;
3487 else if (working == a->info.array.raid_disks-1)
3488 state = DDF_state_part_optimal;
3489 break;
3490 }
7a7cc504 3491
18a2f463
NB		 3492 if (ddf->virt->entries[inst].state !=
3493 ((ddf->virt->entries[inst].state & ~DDF_state_mask)
3494 | state)) {
3495
3496 ddf->virt->entries[inst].state =
3497 (ddf->virt->entries[inst].state & ~DDF_state_mask)
3498 | state;
3499 ddf->updates_pending = 1;
3500 }
7a7cc504 3501
549e9569
NB		 3502}
3503
2e735d19 3504static void ddf_sync_metadata(struct supertype *st)
549e9569 3505{
7a7cc504
NB		 3506
3507 /*
3508 * Write all data to all devices.
3509 * Later, we might be able to track whether only local changes
3510 * have been made, or whether any global data has been changed,
3511 * but ddf is sufficiently weird that it probably always
3512 * changes global data ....
3513 */
18a2f463
NB		 3514 struct ddf_super *ddf = st->sb;
3515 if (!ddf->updates_pending)
3516 return;
3517 ddf->updates_pending = 0;
1cc7f4fe 3518 __write_init_super_ddf(st);
2c514b71 3519 dprintf("ddf: sync_metadata\n");
549e9569
NB		 3520}
3521
88c164f4
NB		 3522static void ddf_process_update(struct supertype *st,
3523 struct metadata_update *update)
3524{
3525 /* Apply this update to the metadata.
3526 * The first 4 bytes are a DDF_*_MAGIC which guides
3527 * our actions.
3528 * Possible update are:
3529 * DDF_PHYS_RECORDS_MAGIC
4dd968cc
N		 3530 * Add a new physical device or remove an old one.
3531 * Changes to this record only happen implicitly.
88c164f4
NB		 3532 * used_pdes is the device number.
3533 * DDF_VIRT_RECORDS_MAGIC
3534 * Add a new VD. Possibly also change the 'access' bits.
3535 * populated_vdes is the entry number.
3536 * DDF_VD_CONF_MAGIC
3537 * New or updated VD. the VIRT_RECORD must already
3538 * exist. For an update, phys_refnum and lba_offset
3539 * (at least) are updated, and the VD_CONF must
3540 * be written to precisely those devices listed with
3541 * a phys_refnum.
3542 * DDF_SPARE_ASSIGN_MAGIC
3543 * replacement Spare Assignment Record... but for which device?
3544 *
3545 * So, e.g.:
3546 * - to create a new array, we send a VIRT_RECORD and
3547 * a VD_CONF. Then assemble and start the array.
3548 * - to activate a spare we send a VD_CONF to add the phys_refnum
3549 * and offset. This will also mark the spare as active with
3550 * a spare-assignment record.
3551 */
3552 struct ddf_super *ddf = st->sb;
3553 __u32 *magic = (__u32*)update->buf;
3554 struct phys_disk *pd;
3555 struct virtual_disk *vd;
3556 struct vd_config *vc;
3557 struct vcl *vcl;
3558 struct dl *dl;
f21e18ca
N		 3559 unsigned int mppe;
3560 unsigned int ent;
c7079c84 3561 unsigned int pdnum, pd2;
88c164f4 3562
2c514b71 3563 dprintf("Process update %x\n", *magic);
7e1432fb 3564
88c164f4
NB		 3565 switch (*magic) {
3566 case DDF_PHYS_RECORDS_MAGIC:
3567
3568 if (update->len != (sizeof(struct phys_disk) +
3569 sizeof(struct phys_disk_entry)))
3570 return;
3571 pd = (struct phys_disk*)update->buf;
3572
3573 ent = __be16_to_cpu(pd->used_pdes);
3574 if (ent >= __be16_to_cpu(ddf->phys->max_pdes))
3575 return;
4dd968cc
N		 3576 if (pd->entries[0].state & __cpu_to_be16(DDF_Missing)) {
3577 struct dl **dlp;
3578 /* removing this disk. */
3579 ddf->phys->entries[ent].state |= __cpu_to_be16(DDF_Missing);
3580 for (dlp = &ddf->dlist; *dlp; dlp = &(*dlp)->next) {
3581 struct dl *dl = *dlp;
3582 if (dl->pdnum == (signed)ent) {
3583 close(dl->fd);
3584 dl->fd = -1;
3585 /* FIXME this doesn't free
3586 * dl->devname */
3587 update->space = dl;
3588 *dlp = dl->next;
3589 break;
3590 }
3591 }
3592 ddf->updates_pending = 1;
3593 return;
3594 }
88c164f4
NB		 3595 if (!all_ff(ddf->phys->entries[ent].guid))
3596 return;
3597 ddf->phys->entries[ent] = pd->entries[0];
3598 ddf->phys->used_pdes = __cpu_to_be16(1 +
613b0d17 3599 __be16_to_cpu(ddf->phys->used_pdes));
18a2f463 3600 ddf->updates_pending = 1;
2cc2983d
N		 3601 if (ddf->add_list) {
3602 struct active_array *a;
3603 struct dl *al = ddf->add_list;
3604 ddf->add_list = al->next;
3605
3606 al->next = ddf->dlist;
3607 ddf->dlist = al;
3608
3609 /* As a device has been added, we should check
3610 * for any degraded devices that might make
3611 * use of this spare */
3612 for (a = st->arrays ; a; a=a->next)
3613 a->check_degraded = 1;
3614 }
88c164f4
NB		 3615 break;
3616
3617 case DDF_VIRT_RECORDS_MAGIC:
3618
3619 if (update->len != (sizeof(struct virtual_disk) +
3620 sizeof(struct virtual_entry)))
3621 return;
3622 vd = (struct virtual_disk*)update->buf;
3623
3624 ent = __be16_to_cpu(vd->populated_vdes);
3625 if (ent >= __be16_to_cpu(ddf->virt->max_vdes))
3626 return;
3627 if (!all_ff(ddf->virt->entries[ent].guid))
3628 return;
3629 ddf->virt->entries[ent] = vd->entries[0];
3630 ddf->virt->populated_vdes = __cpu_to_be16(1 +
613b0d17 3631 __be16_to_cpu(ddf->virt->populated_vdes));
18a2f463 3632 ddf->updates_pending = 1;
88c164f4
NB		 3633 break;
3634
3635 case DDF_VD_CONF_MAGIC:
2c514b71 3636 dprintf("len %d %d\n", update->len, ddf->conf_rec_len);
88c164f4
NB		 3637
3638 mppe = __be16_to_cpu(ddf->anchor.max_primary_element_entries);
f21e18ca 3639 if ((unsigned)update->len != ddf->conf_rec_len * 512)
88c164f4
NB		 3640 return;
3641 vc = (struct vd_config*)update->buf;
3642 for (vcl = ddf->conflist; vcl ; vcl = vcl->next)
3643 if (memcmp(vcl->conf.guid, vc->guid, DDF_GUID_LEN) == 0)
3644 break;
2c514b71 3645 dprintf("vcl = %p\n", vcl);
88c164f4
NB		 3646 if (vcl) {
3647 /* An update, just copy the phys_refnum and lba_offset
3648 * fields
3649 */
3650 memcpy(vcl->conf.phys_refnum, vc->phys_refnum,
3651 mppe * (sizeof(__u32) + sizeof(__u64)));
3652 } else {
3653 /* A new VD_CONF */
e6b9548d
DW		 3654 if (!update->space)
3655 return;
88c164f4
NB		 3656 vcl = update->space;
3657 update->space = NULL;
3658 vcl->next = ddf->conflist;
edd8d13c 3659 memcpy(&vcl->conf, vc, update->len);
88c164f4
NB		 3660 vcl->lba_offset = (__u64*)
3661 &vcl->conf.phys_refnum[mppe];
1502a43a
N		 3662 for (ent = 0;
3663 ent < __be16_to_cpu(ddf->virt->populated_vdes);
3664 ent++)
3665 if (memcmp(vc->guid, ddf->virt->entries[ent].guid,
3666 DDF_GUID_LEN) == 0) {
3667 vcl->vcnum = ent;
3668 break;
3669 }
88c164f4
NB		 3670 ddf->conflist = vcl;
3671 }
c7079c84
N		 3672 /* Set DDF_Transition on all Failed devices - to help
3673 * us detect those that are no longer in use
3674 */
3675 for (pdnum = 0; pdnum < __be16_to_cpu(ddf->phys->used_pdes); pdnum++)
3676 if (ddf->phys->entries[pdnum].state
3677 & __be16_to_cpu(DDF_Failed))
3678 ddf->phys->entries[pdnum].state
3679 |= __be16_to_cpu(DDF_Transition);
88c164f4
NB		 3680 /* Now make sure vlist is correct for each dl. */
3681 for (dl = ddf->dlist; dl; dl = dl->next) {
f21e18ca
N		 3682 unsigned int dn;
3683 unsigned int vn = 0;
8401644c 3684 int in_degraded = 0;
88c164f4
NB		 3685 for (vcl = ddf->conflist; vcl ; vcl = vcl->next)
3686 for (dn=0; dn < ddf->mppe ; dn++)
3687 if (vcl->conf.phys_refnum[dn] ==
3688 dl->disk.refnum) {
8401644c 3689 int vstate;
2c514b71
NB		 3690 dprintf("dev %d has %p at %d\n",
3691 dl->pdnum, vcl, vn);
c7079c84
N		 3692 /* Clear the Transition flag */
3693 if (ddf->phys->entries[dl->pdnum].state
3694 & __be16_to_cpu(DDF_Failed))
3695 ddf->phys->entries[dl->pdnum].state &=
3696 ~__be16_to_cpu(DDF_Transition);
3697
88c164f4 3698 dl->vlist[vn++] = vcl;
8401644c
N		 3699 vstate = ddf->virt->entries[vcl->vcnum].state
3700 & DDF_state_mask;
3701 if (vstate == DDF_state_degraded ||
3702 vstate == DDF_state_part_optimal)
3703 in_degraded = 1;
88c164f4
NB		 3704 break;
3705 }
3706 while (vn < ddf->max_part)
3707 dl->vlist[vn++] = NULL;
7e1432fb
NB		 3708 if (dl->vlist[0]) {
3709 ddf->phys->entries[dl->pdnum].type &=
3710 ~__cpu_to_be16(DDF_Global_Spare);
8401644c
N		 3711 if (!(ddf->phys->entries[dl->pdnum].type &
3712 __cpu_to_be16(DDF_Active_in_VD))) {
613b0d17
N		 3713 ddf->phys->entries[dl->pdnum].type |=
3714 __cpu_to_be16(DDF_Active_in_VD);
3715 if (in_degraded)
3716 ddf->phys->entries[dl->pdnum].state |=
3717 __cpu_to_be16(DDF_Rebuilding);
3718 }
7e1432fb
NB		 3719 }
3720 if (dl->spare) {
3721 ddf->phys->entries[dl->pdnum].type &=
3722 ~__cpu_to_be16(DDF_Global_Spare);
3723 ddf->phys->entries[dl->pdnum].type |=
3724 __cpu_to_be16(DDF_Spare);
3725 }
3726 if (!dl->vlist[0] && !dl->spare) {
3727 ddf->phys->entries[dl->pdnum].type |=
3728 __cpu_to_be16(DDF_Global_Spare);
3729 ddf->phys->entries[dl->pdnum].type &=
3730 ~__cpu_to_be16(DDF_Spare |
3731 DDF_Active_in_VD);
3732 }
88c164f4 3733 }
c7079c84
N		 3734
3735 /* Now remove any 'Failed' devices that are not part
3736 * of any VD. They will have the Transition flag set.
3737 * Once done, we need to update all dl->pdnum numbers.
3738 */
3739 pd2 = 0;
3740 for (pdnum = 0; pdnum < __be16_to_cpu(ddf->phys->used_pdes); pdnum++)
3741 if ((ddf->phys->entries[pdnum].state
3742 & __be16_to_cpu(DDF_Failed))
3743 && (ddf->phys->entries[pdnum].state
3744 & __be16_to_cpu(DDF_Transition)))
3745 /* skip this one */;
3746 else if (pdnum == pd2)
3747 pd2++;
3748 else {
3749 ddf->phys->entries[pd2] = ddf->phys->entries[pdnum];
3750 for (dl = ddf->dlist; dl; dl = dl->next)
3751 if (dl->pdnum == (int)pdnum)
3752 dl->pdnum = pd2;
3753 pd2++;
3754 }
3755 ddf->phys->used_pdes = __cpu_to_be16(pd2);
3756 while (pd2 < pdnum) {
3757 memset(ddf->phys->entries[pd2].guid, 0xff, DDF_GUID_LEN);
3758 pd2++;
3759 }
3760
18a2f463 3761 ddf->updates_pending = 1;
88c164f4
NB		 3762 break;
3763 case DDF_SPARE_ASSIGN_MAGIC:
3764 default: break;
3765 }
3766}
3767
edd8d13c
NB		 3768static void ddf_prepare_update(struct supertype *st,
3769 struct metadata_update *update)
3770{
3771 /* This update arrived at managemon.
3772 * We are about to pass it to monitor.
3773 * If a malloc is needed, do it here.
3774 */
3775 struct ddf_super *ddf = st->sb;
3776 __u32 *magic = (__u32*)update->buf;
3777 if (*magic == DDF_VD_CONF_MAGIC)
e6b9548d 3778 if (posix_memalign(&update->space, 512,
613b0d17
N		 3779 offsetof(struct vcl, conf)
3780 + ddf->conf_rec_len * 512) != 0)
e6b9548d 3781 update->space = NULL;
edd8d13c
NB		 3782}
3783
7e1432fb
NB		 3784/*
3785 * Check if the array 'a' is degraded but not failed.
3786 * If it is, find as many spares as are available and needed and
3787 * arrange for their inclusion.
3788 * We only choose devices which are not already in the array,
3789 * and prefer those with a spare-assignment to this array.
3790 * otherwise we choose global spares - assuming always that
3791 * there is enough room.
3792 * For each spare that we assign, we return an 'mdinfo' which
3793 * describes the position for the device in the array.
3794 * We also add to 'updates' a DDF_VD_CONF_MAGIC update with
3795 * the new phys_refnum and lba_offset values.
3796 *
3797 * Only worry about BVDs at the moment.
3798 */
3799static struct mdinfo *ddf_activate_spare(struct active_array *a,
3800 struct metadata_update **updates)
3801{
3802 int working = 0;
3803 struct mdinfo *d;
3804 struct ddf_super *ddf = a->container->sb;
3805 int global_ok = 0;
3806 struct mdinfo *rv = NULL;
3807 struct mdinfo *di;
3808 struct metadata_update *mu;
3809 struct dl *dl;
3810 int i;
3811 struct vd_config *vc;
3812 __u64 *lba;
3813
7e1432fb
NB		 3814 for (d = a->info.devs ; d ; d = d->next) {
3815 if ((d->curr_state & DS_FAULTY) &&
613b0d17 3816 d->state_fd >= 0)
7e1432fb
NB		 3817 /* wait for Removal to happen */
3818 return NULL;
3819 if (d->state_fd >= 0)
3820 working ++;
3821 }
3822
2c514b71
NB		 3823 dprintf("ddf_activate: working=%d (%d) level=%d\n", working, a->info.array.raid_disks,
3824 a->info.array.level);
7e1432fb
NB		 3825 if (working == a->info.array.raid_disks)
3826 return NULL; /* array not degraded */
3827 switch (a->info.array.level) {
3828 case 1:
3829 if (working == 0)
3830 return NULL; /* failed */
3831 break;
3832 case 4:
3833 case 5:
3834 if (working < a->info.array.raid_disks - 1)
3835 return NULL; /* failed */
3836 break;
3837 case 6:
3838 if (working < a->info.array.raid_disks - 2)
3839 return NULL; /* failed */
3840 break;
3841 default: /* concat or stripe */
3842 return NULL; /* failed */
3843 }
3844
3845 /* For each slot, if it is not working, find a spare */
3846 dl = ddf->dlist;
3847 for (i = 0; i < a->info.array.raid_disks; i++) {
3848 for (d = a->info.devs ; d ; d = d->next)
3849 if (d->disk.raid_disk == i)
3850 break;
2c514b71 3851 dprintf("found %d: %p %x\n", i, d, d?d->curr_state:0);
7e1432fb
NB		 3852 if (d && (d->state_fd >= 0))
3853 continue;
3854
3855 /* OK, this device needs recovery. Find a spare */
3856 again:
3857 for ( ; dl ; dl = dl->next) {
3858 unsigned long long esize;
3859 unsigned long long pos;
3860 struct mdinfo *d2;
3861 int is_global = 0;
3862 int is_dedicated = 0;
3863 struct extent *ex;
f21e18ca 3864 unsigned int j;
7e1432fb
NB		 3865 /* If in this array, skip */
3866 for (d2 = a->info.devs ; d2 ; d2 = d2->next)
7590d562
N		 3867 if (d2->state_fd >= 0 &&
3868 d2->disk.major == dl->major &&
7e1432fb 3869 d2->disk.minor == dl->minor) {
2c514b71 3870 dprintf("%x:%x already in array\n", dl->major, dl->minor);
7e1432fb
NB		 3871 break;
3872 }
3873 if (d2)
3874 continue;
3875 if (ddf->phys->entries[dl->pdnum].type &
3876 __cpu_to_be16(DDF_Spare)) {
3877 /* Check spare assign record */
3878 if (dl->spare) {
3879 if (dl->spare->type & DDF_spare_dedicated) {
3880 /* check spare_ents for guid */
3881 for (j = 0 ;
3882 j < __be16_to_cpu(dl->spare->populated);
3883 j++) {
3884 if (memcmp(dl->spare->spare_ents[j].guid,
3885 ddf->virt->entries[a->info.container_member].guid,
3886 DDF_GUID_LEN) == 0)
3887 is_dedicated = 1;
3888 }
3889 } else
3890 is_global = 1;
3891 }
3892 } else if (ddf->phys->entries[dl->pdnum].type &
3893 __cpu_to_be16(DDF_Global_Spare)) {
3894 is_global = 1;
e0e7aeaa
N		 3895 } else if (!(ddf->phys->entries[dl->pdnum].state &
3896 __cpu_to_be16(DDF_Failed))) {
3897 /* we can possibly use some of this */
3898 is_global = 1;
7e1432fb
NB		 3899 }
3900 if ( ! (is_dedicated ||
3901 (is_global && global_ok))) {
2c514b71 3902 dprintf("%x:%x not suitable: %d %d\n", dl->major, dl->minor,
613b0d17 3903 is_dedicated, is_global);
7e1432fb
NB		 3904 continue;
3905 }
3906
3907 /* We are allowed to use this device - is there space?
3908 * We need a->info.component_size sectors */
3909 ex = get_extents(ddf, dl);
3910 if (!ex) {
2c514b71 3911 dprintf("cannot get extents\n");
7e1432fb
NB		 3912 continue;
3913 }
3914 j = 0; pos = 0;
3915 esize = 0;
3916
3917 do {
3918 esize = ex[j].start - pos;
3919 if (esize >= a->info.component_size)
3920 break;
e5cc7d46
N		 3921 pos = ex[j].start + ex[j].size;
3922 j++;
3923 } while (ex[j-1].size);
7e1432fb
NB		 3924
3925 free(ex);
3926 if (esize < a->info.component_size) {
e5cc7d46
N		 3927 dprintf("%x:%x has no room: %llu %llu\n",
3928 dl->major, dl->minor,
2c514b71 3929 esize, a->info.component_size);
7e1432fb
NB		 3930 /* No room */
3931 continue;
3932 }
3933
3934 /* Cool, we have a device with some space at pos */
503975b9 3935 di = xcalloc(1, sizeof(*di));
7e1432fb
NB		 3936 di->disk.number = i;
3937 di->disk.raid_disk = i;
3938 di->disk.major = dl->major;
3939 di->disk.minor = dl->minor;
3940 di->disk.state = 0;
d23534e4 3941 di->recovery_start = 0;
7e1432fb
NB		 3942 di->data_offset = pos;
3943 di->component_size = a->info.component_size;
3944 di->container_member = dl->pdnum;
3945 di->next = rv;
3946 rv = di;
2c514b71
NB		 3947 dprintf("%x:%x to be %d at %llu\n", dl->major, dl->minor,
3948 i, pos);
7e1432fb
NB		 3949
3950 break;
3951 }
3952 if (!dl && ! global_ok) {
3953 /* not enough dedicated spares, try global */
3954 global_ok = 1;
3955 dl = ddf->dlist;
3956 goto again;
3957 }
3958 }
3959
3960 if (!rv)
3961 /* No spares found */
3962 return rv;
3963 /* Now 'rv' has a list of devices to return.
3964 * Create a metadata_update record to update the
3965 * phys_refnum and lba_offset values
3966 */
503975b9
N		 3967 mu = xmalloc(sizeof(*mu));
3968 if (posix_memalign(&mu->space, 512, sizeof(struct vcl)) != 0) {
79244939
DW		 3969 free(mu);
3970 mu = NULL;
3971 }
503975b9 3972 mu->buf = xmalloc(ddf->conf_rec_len * 512);
7590d562
N		 3973 mu->len = ddf->conf_rec_len * 512;
3974 mu->space = NULL;
f50ae22e 3975 mu->space_list = NULL;
7e1432fb
NB		 3976 mu->next = *updates;
3977 vc = find_vdcr(ddf, a->info.container_member);
3978 memcpy(mu->buf, vc, ddf->conf_rec_len * 512);
3979
3980 vc = (struct vd_config*)mu->buf;
3981 lba = (__u64*)&vc->phys_refnum[ddf->mppe];
3982 for (di = rv ; di ; di = di->next) {
3983 vc->phys_refnum[di->disk.raid_disk] =
3984 ddf->phys->entries[dl->pdnum].refnum;
3985 lba[di->disk.raid_disk] = di->data_offset;
3986 }
3987 *updates = mu;
3988 return rv;
3989}
0e600426 3990#endif /* MDASSEMBLE */
7e1432fb 3991
b640a252
N		 3992static int ddf_level_to_layout(int level)
3993{
3994 switch(level) {
3995 case 0:
3996 case 1:
3997 return 0;
3998 case 5:
3999 return ALGORITHM_LEFT_SYMMETRIC;
4000 case 6:
4001 return ALGORITHM_ROTATING_N_CONTINUE;
4002 case 10:
4003 return 0x102;
4004 default:
4005 return UnSet;
4006 }
4007}
4008
30f58b22
DW		 4009static void default_geometry_ddf(struct supertype *st, int *level, int *layout, int *chunk)
4010{
4011 if (level && *level == UnSet)
4012 *level = LEVEL_CONTAINER;
4013
4014 if (level && layout && *layout == UnSet)
4015 *layout = ddf_level_to_layout(*level);
4016}
4017
a322f70c
DW		 4018struct superswitch super_ddf = {
4019#ifndef MDASSEMBLE
4020 .examine_super = examine_super_ddf,
4021 .brief_examine_super = brief_examine_super_ddf,
4737ae25 4022 .brief_examine_subarrays = brief_examine_subarrays_ddf,
bceedeec 4023 .export_examine_super = export_examine_super_ddf,
a322f70c
DW		 4024 .detail_super = detail_super_ddf,
4025 .brief_detail_super = brief_detail_super_ddf,
4026 .validate_geometry = validate_geometry_ddf,
78e44928 4027 .write_init_super = write_init_super_ddf,
0e600426 4028 .add_to_super = add_to_super_ddf,
4dd968cc 4029 .remove_from_super = remove_from_super_ddf,
2b959fbf 4030 .load_container = load_container_ddf,
a322f70c
DW		 4031#endif
4032 .match_home = match_home_ddf,
4033 .uuid_from_super= uuid_from_super_ddf,
4034 .getinfo_super = getinfo_super_ddf,
4035 .update_super = update_super_ddf,
4036
4037 .avail_size = avail_size_ddf,
4038
a19c88b8
NB		 4039 .compare_super = compare_super_ddf,
4040
a322f70c 4041 .load_super = load_super_ddf,
ba7eb04f 4042 .init_super = init_super_ddf,
955e9ea1 4043 .store_super = store_super_ddf,
a322f70c
DW		 4044 .free_super = free_super_ddf,
4045 .match_metadata_desc = match_metadata_desc_ddf,
78e44928 4046 .container_content = container_content_ddf,
30f58b22 4047 .default_geometry = default_geometry_ddf,
a322f70c 4048
a322f70c 4049 .external = 1,
549e9569 4050
0e600426 4051#ifndef MDASSEMBLE
549e9569
NB		 4052/* for mdmon */
4053 .open_new = ddf_open_new,
ed9d66aa 4054 .set_array_state= ddf_set_array_state,
549e9569
NB		 4055 .set_disk = ddf_set_disk,
4056 .sync_metadata = ddf_sync_metadata,
88c164f4 4057 .process_update = ddf_process_update,
edd8d13c 4058 .prepare_update = ddf_prepare_update,
7e1432fb 4059 .activate_spare = ddf_activate_spare,
0e600426 4060#endif
4cce4069 4061 .name = "ddf",
a322f70c 4062};
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