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DDF: getinfo_super_ddf_bvd: fix raid_disk calculation
[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
bedbf68a 47#define DDF_NOTFOUND (~0U)
48#define DDF_CONTAINER (DDF_NOTFOUND-1)
49
a322f70c
DW		 50/* The DDF metadata handling.
51 * DDF metadata lives at the end of the device.
52 * The last 512 byte block provides an 'anchor' which is used to locate
53 * the rest of the metadata which usually lives immediately behind the anchor.
54 *
55 * Note:
56 * - all multibyte numeric fields are bigendian.
57 * - all strings are space padded.
58 *
59 */
60
61/* Primary Raid Level (PRL) */
62#define DDF_RAID0 0x00
63#define DDF_RAID1 0x01
64#define DDF_RAID3 0x03
65#define DDF_RAID4 0x04
66#define DDF_RAID5 0x05
67#define DDF_RAID1E 0x11
68#define DDF_JBOD 0x0f
69#define DDF_CONCAT 0x1f
70#define DDF_RAID5E 0x15
71#define DDF_RAID5EE 0x25
59e36268 72#define DDF_RAID6 0x06
a322f70c
DW		 73
74/* Raid Level Qualifier (RLQ) */
75#define DDF_RAID0_SIMPLE 0x00
76#define DDF_RAID1_SIMPLE 0x00 /* just 2 devices in this plex */
77#define DDF_RAID1_MULTI 0x01 /* exactly 3 devices in this plex */
78#define DDF_RAID3_0 0x00 /* parity in first extent */
79#define DDF_RAID3_N 0x01 /* parity in last extent */
80#define DDF_RAID4_0 0x00 /* parity in first extent */
81#define DDF_RAID4_N 0x01 /* parity in last extent */
82/* these apply to raid5e and raid5ee as well */
83#define DDF_RAID5_0_RESTART 0x00 /* same as 'right asymmetric' - layout 1 */
59e36268 84#define DDF_RAID6_0_RESTART 0x01 /* raid6 different from raid5 here!!! */
a322f70c
DW		 85#define DDF_RAID5_N_RESTART 0x02 /* same as 'left asymmetric' - layout 0 */
86#define DDF_RAID5_N_CONTINUE 0x03 /* same as 'left symmetric' - layout 2 */
87
88#define DDF_RAID1E_ADJACENT 0x00 /* raid10 nearcopies==2 */
89#define DDF_RAID1E_OFFSET 0x01 /* raid10 offsetcopies==2 */
90
91/* Secondary RAID Level (SRL) */
92#define DDF_2STRIPED 0x00 /* This is weirder than RAID0 !! */
93#define DDF_2MIRRORED 0x01
94#define DDF_2CONCAT 0x02
95#define DDF_2SPANNED 0x03 /* This is also weird - be careful */
96
97/* Magic numbers */
98#define DDF_HEADER_MAGIC __cpu_to_be32(0xDE11DE11)
99#define DDF_CONTROLLER_MAGIC __cpu_to_be32(0xAD111111)
100#define DDF_PHYS_RECORDS_MAGIC __cpu_to_be32(0x22222222)
101#define DDF_PHYS_DATA_MAGIC __cpu_to_be32(0x33333333)
102#define DDF_VIRT_RECORDS_MAGIC __cpu_to_be32(0xDDDDDDDD)
103#define DDF_VD_CONF_MAGIC __cpu_to_be32(0xEEEEEEEE)
104#define DDF_SPARE_ASSIGN_MAGIC __cpu_to_be32(0x55555555)
105#define DDF_VU_CONF_MAGIC __cpu_to_be32(0x88888888)
106#define DDF_VENDOR_LOG_MAGIC __cpu_to_be32(0x01dBEEF0)
107#define DDF_BBM_LOG_MAGIC __cpu_to_be32(0xABADB10C)
108
109#define DDF_GUID_LEN 24
59e36268
NB		 110#define DDF_REVISION_0 "01.00.00"
111#define DDF_REVISION_2 "01.02.00"
a322f70c
DW		 112
113struct ddf_header {
88c164f4 114 __u32 magic; /* DDF_HEADER_MAGIC */
a322f70c
DW		 115 __u32 crc;
116 char guid[DDF_GUID_LEN];
59e36268 117 char revision[8]; /* 01.02.00 */
a322f70c
DW		 118 __u32 seq; /* starts at '1' */
119 __u32 timestamp;
120 __u8 openflag;
121 __u8 foreignflag;
122 __u8 enforcegroups;
123 __u8 pad0; /* 0xff */
124 __u8 pad1[12]; /* 12 * 0xff */
125 /* 64 bytes so far */
126 __u8 header_ext[32]; /* reserved: fill with 0xff */
127 __u64 primary_lba;
128 __u64 secondary_lba;
129 __u8 type;
130 __u8 pad2[3]; /* 0xff */
131 __u32 workspace_len; /* sectors for vendor space -
132 * at least 32768(sectors) */
133 __u64 workspace_lba;
134 __u16 max_pd_entries; /* one of 15, 63, 255, 1023, 4095 */
135 __u16 max_vd_entries; /* 2^(4,6,8,10,12)-1 : i.e. as above */
136 __u16 max_partitions; /* i.e. max num of configuration
137 record entries per disk */
138 __u16 config_record_len; /* 1 +ROUNDUP(max_primary_element_entries
139 *12/512) */
140 __u16 max_primary_element_entries; /* 16, 64, 256, 1024, or 4096 */
141 __u8 pad3[54]; /* 0xff */
142 /* 192 bytes so far */
143 __u32 controller_section_offset;
144 __u32 controller_section_length;
145 __u32 phys_section_offset;
146 __u32 phys_section_length;
147 __u32 virt_section_offset;
148 __u32 virt_section_length;
149 __u32 config_section_offset;
150 __u32 config_section_length;
151 __u32 data_section_offset;
152 __u32 data_section_length;
153 __u32 bbm_section_offset;
154 __u32 bbm_section_length;
155 __u32 diag_space_offset;
156 __u32 diag_space_length;
157 __u32 vendor_offset;
158 __u32 vendor_length;
159 /* 256 bytes so far */
160 __u8 pad4[256]; /* 0xff */
161};
162
163/* type field */
164#define DDF_HEADER_ANCHOR 0x00
165#define DDF_HEADER_PRIMARY 0x01
166#define DDF_HEADER_SECONDARY 0x02
167
168/* The content of the 'controller section' - global scope */
169struct ddf_controller_data {
88c164f4 170 __u32 magic; /* DDF_CONTROLLER_MAGIC */
a322f70c
DW		 171 __u32 crc;
172 char guid[DDF_GUID_LEN];
173 struct controller_type {
174 __u16 vendor_id;
175 __u16 device_id;
176 __u16 sub_vendor_id;
177 __u16 sub_device_id;
178 } type;
179 char product_id[16];
180 __u8 pad[8]; /* 0xff */
181 __u8 vendor_data[448];
182};
183
184/* The content of phys_section - global scope */
185struct phys_disk {
88c164f4 186 __u32 magic; /* DDF_PHYS_RECORDS_MAGIC */
a322f70c
DW		 187 __u32 crc;
188 __u16 used_pdes;
189 __u16 max_pdes;
190 __u8 pad[52];
191 struct phys_disk_entry {
192 char guid[DDF_GUID_LEN];
193 __u32 refnum;
194 __u16 type;
195 __u16 state;
196 __u64 config_size; /* DDF structures must be after here */
197 char path[18]; /* another horrible structure really */
198 __u8 pad[6];
199 } entries[0];
200};
201
202/* phys_disk_entry.type is a bitmap - bigendian remember */
203#define DDF_Forced_PD_GUID 1
204#define DDF_Active_in_VD 2
88c164f4 205#define DDF_Global_Spare 4 /* VD_CONF records are ignored */
a322f70c
DW		 206#define DDF_Spare 8 /* overrides Global_spare */
207#define DDF_Foreign 16
208#define DDF_Legacy 32 /* no DDF on this device */
209
210#define DDF_Interface_mask 0xf00
211#define DDF_Interface_SCSI 0x100
212#define DDF_Interface_SAS 0x200
213#define DDF_Interface_SATA 0x300
214#define DDF_Interface_FC 0x400
215
216/* phys_disk_entry.state is a bigendian bitmap */
217#define DDF_Online 1
218#define DDF_Failed 2 /* overrides 1,4,8 */
219#define DDF_Rebuilding 4
220#define DDF_Transition 8
221#define DDF_SMART 16
222#define DDF_ReadErrors 32
223#define DDF_Missing 64
224
225/* The content of the virt_section global scope */
226struct virtual_disk {
88c164f4 227 __u32 magic; /* DDF_VIRT_RECORDS_MAGIC */
a322f70c
DW		 228 __u32 crc;
229 __u16 populated_vdes;
230 __u16 max_vdes;
231 __u8 pad[52];
232 struct virtual_entry {
233 char guid[DDF_GUID_LEN];
234 __u16 unit;
235 __u16 pad0; /* 0xffff */
236 __u16 guid_crc;
237 __u16 type;
238 __u8 state;
239 __u8 init_state;
240 __u8 pad1[14];
241 char name[16];
242 } entries[0];
243};
244
245/* virtual_entry.type is a bitmap - bigendian */
246#define DDF_Shared 1
247#define DDF_Enforce_Groups 2
248#define DDF_Unicode 4
249#define DDF_Owner_Valid 8
250
251/* virtual_entry.state is a bigendian bitmap */
252#define DDF_state_mask 0x7
253#define DDF_state_optimal 0x0
254#define DDF_state_degraded 0x1
255#define DDF_state_deleted 0x2
256#define DDF_state_missing 0x3
257#define DDF_state_failed 0x4
7a7cc504 258#define DDF_state_part_optimal 0x5
a322f70c
DW		 259
260#define DDF_state_morphing 0x8
261#define DDF_state_inconsistent 0x10
262
263/* virtual_entry.init_state is a bigendian bitmap */
264#define DDF_initstate_mask 0x03
265#define DDF_init_not 0x00
7a7cc504
NB		 266#define DDF_init_quick 0x01 /* initialisation is progress.
267 * i.e. 'state_inconsistent' */
a322f70c
DW		 268#define DDF_init_full 0x02
269
270#define DDF_access_mask 0xc0
271#define DDF_access_rw 0x00
272#define DDF_access_ro 0x80
273#define DDF_access_blocked 0xc0
274
275/* The content of the config_section - local scope
276 * It has multiple records each config_record_len sectors
277 * They can be vd_config or spare_assign
278 */
279
280struct vd_config {
88c164f4 281 __u32 magic; /* DDF_VD_CONF_MAGIC */
a322f70c
DW		 282 __u32 crc;
283 char guid[DDF_GUID_LEN];
284 __u32 timestamp;
285 __u32 seqnum;
286 __u8 pad0[24];
287 __u16 prim_elmnt_count;
288 __u8 chunk_shift; /* 0 == 512, 1==1024 etc */
289 __u8 prl;
290 __u8 rlq;
291 __u8 sec_elmnt_count;
292 __u8 sec_elmnt_seq;
293 __u8 srl;
598f0d58
NB		 294 __u64 blocks; /* blocks per component could be different
295 * on different component devices...(only
296 * for concat I hope) */
297 __u64 array_blocks; /* blocks in array */
a322f70c
DW		 298 __u8 pad1[8];
299 __u32 spare_refs[8];
300 __u8 cache_pol[8];
301 __u8 bg_rate;
302 __u8 pad2[3];
303 __u8 pad3[52];
304 __u8 pad4[192];
305 __u8 v0[32]; /* reserved- 0xff */
306 __u8 v1[32]; /* reserved- 0xff */
307 __u8 v2[16]; /* reserved- 0xff */
308 __u8 v3[16]; /* reserved- 0xff */
309 __u8 vendor[32];
310 __u32 phys_refnum[0]; /* refnum of each disk in sequence */
311 /*__u64 lba_offset[0]; LBA offset in each phys. Note extents in a
312 bvd are always the same size */
313};
57a66662 314#define LBA_OFFSET(ddf, vd) ((__u64 *) &(vd)->phys_refnum[(ddf)->mppe])
a322f70c
DW		 315
316/* vd_config.cache_pol[7] is a bitmap */
317#define DDF_cache_writeback 1 /* else writethrough */
318#define DDF_cache_wadaptive 2 /* only applies if writeback */
319#define DDF_cache_readahead 4
320#define DDF_cache_radaptive 8 /* only if doing read-ahead */
321#define DDF_cache_ifnobatt 16 /* even to write cache if battery is poor */
322#define DDF_cache_wallowed 32 /* enable write caching */
323#define DDF_cache_rallowed 64 /* enable read caching */
324
325struct spare_assign {
88c164f4 326 __u32 magic; /* DDF_SPARE_ASSIGN_MAGIC */
a322f70c
DW		 327 __u32 crc;
328 __u32 timestamp;
329 __u8 reserved[7];
330 __u8 type;
331 __u16 populated; /* SAEs used */
332 __u16 max; /* max SAEs */
333 __u8 pad[8];
334 struct spare_assign_entry {
335 char guid[DDF_GUID_LEN];
336 __u16 secondary_element;
337 __u8 pad[6];
338 } spare_ents[0];
339};
340/* spare_assign.type is a bitmap */
341#define DDF_spare_dedicated 0x1 /* else global */
342#define DDF_spare_revertible 0x2 /* else committable */
343#define DDF_spare_active 0x4 /* else not active */
344#define DDF_spare_affinity 0x8 /* enclosure affinity */
345
346/* The data_section contents - local scope */
347struct disk_data {
88c164f4 348 __u32 magic; /* DDF_PHYS_DATA_MAGIC */
a322f70c
DW		 349 __u32 crc;
350 char guid[DDF_GUID_LEN];
351 __u32 refnum; /* crc of some magic drive data ... */
352 __u8 forced_ref; /* set when above was not result of magic */
353 __u8 forced_guid; /* set if guid was forced rather than magic */
354 __u8 vendor[32];
355 __u8 pad[442];
356};
357
358/* bbm_section content */
359struct bad_block_log {
360 __u32 magic;
361 __u32 crc;
362 __u16 entry_count;
363 __u32 spare_count;
364 __u8 pad[10];
365 __u64 first_spare;
366 struct mapped_block {
367 __u64 defective_start;
368 __u32 replacement_start;
369 __u16 remap_count;
370 __u8 pad[2];
371 } entries[0];
372};
373
374/* Struct for internally holding ddf structures */
375/* The DDF structure stored on each device is potentially
376 * quite different, as some data is global and some is local.
377 * The global data is:
378 * - ddf header
379 * - controller_data
380 * - Physical disk records
381 * - Virtual disk records
382 * The local data is:
383 * - Configuration records
384 * - Physical Disk data section
385 * ( and Bad block and vendor which I don't care about yet).
386 *
387 * The local data is parsed into separate lists as it is read
388 * and reconstructed for writing. This means that we only need
389 * to make config changes once and they are automatically
390 * propagated to all devices.
391 * Note that the ddf_super has space of the conf and disk data
392 * for this disk and also for a list of all such data.
393 * The list is only used for the superblock that is being
394 * built in Create or Assemble to describe the whole array.
395 */
396struct ddf_super {
6416d527 397 struct ddf_header anchor, primary, secondary;
a322f70c 398 struct ddf_controller_data controller;
6416d527 399 struct ddf_header *active;
a322f70c
DW		 400 struct phys_disk *phys;
401 struct virtual_disk *virt;
402 int pdsize, vdsize;
f21e18ca 403 unsigned int max_part, mppe, conf_rec_len;
d2ca6449 404 int currentdev;
18a2f463 405 int updates_pending;
a322f70c 406 struct vcl {
6416d527
NB		 407 union {
408 char space[512];
409 struct {
410 struct vcl *next;
f21e18ca 411 unsigned int vcnum; /* index into ->virt */
8ec5d685 412 struct vd_config **other_bvds;
6416d527
NB		 413 __u64 *block_sizes; /* NULL if all the same */
414 };
415 };
a322f70c 416 struct vd_config conf;
d2ca6449 417 } *conflist, *currentconf;
a322f70c 418 struct dl {
6416d527
NB		 419 union {
420 char space[512];
421 struct {
422 struct dl *next;
423 int major, minor;
424 char *devname;
425 int fd;
426 unsigned long long size; /* sectors */
097bcf00 427 unsigned long long primary_lba; /* sectors */
428 unsigned long long secondary_lba; /* sectors */
429 unsigned long long workspace_lba; /* sectors */
6416d527
NB		 430 int pdnum; /* index in ->phys */
431 struct spare_assign *spare;
8592f29d
N		 432 void *mdupdate; /* hold metadata update */
433
434 /* These fields used by auto-layout */
435 int raiddisk; /* slot to fill in autolayout */
436 __u64 esize;
6416d527
NB		 437 };
438 };
a322f70c 439 struct disk_data disk;
b2280677 440 struct vcl *vlist[0]; /* max_part in size */
2cc2983d 441 } *dlist, *add_list;
a322f70c
DW		 442};
443
444#ifndef offsetof
445#define offsetof(t,f) ((size_t)&(((t*)0)->f))
446#endif
447
7d5a7ff3 448#if DEBUG
fb9d0acb 449static int all_ff(const char *guid);
7d5a7ff3 450static void pr_state(struct ddf_super *ddf, const char *msg)
451{
452 unsigned int i;
453 dprintf("%s/%s: ", __func__, msg);
454 for (i = 0; i < __be16_to_cpu(ddf->active->max_vd_entries); i++) {
455 if (all_ff(ddf->virt->entries[i].guid))
456 continue;
457 dprintf("%u(s=%02x i=%02x) ", i,
458 ddf->virt->entries[i].state,
459 ddf->virt->entries[i].init_state);
460 }
461 dprintf("\n");
462}
463#else
464static void pr_state(const struct ddf_super *ddf, const char *msg) {}
465#endif
466
467#define ddf_set_updates_pending(x) \
468 do { (x)->updates_pending = 1; pr_state(x, __func__); } while (0)
469
fcc22180 470static unsigned int get_pd_index_from_refnum(const struct vcl *vc,
471 __u32 refnum, unsigned int nmax,
472 const struct vd_config **bvd,
473 unsigned int *idx);
474
f21e18ca 475static unsigned int calc_crc(void *buf, int len)
a322f70c
DW		 476{
477 /* crcs are always at the same place as in the ddf_header */
478 struct ddf_header *ddf = buf;
479 __u32 oldcrc = ddf->crc;
480 __u32 newcrc;
481 ddf->crc = 0xffffffff;
482
483 newcrc = crc32(0, buf, len);
484 ddf->crc = oldcrc;
4abe6b70
N		 485 /* The crc is store (like everything) bigendian, so convert
486 * here for simplicity
487 */
488 return __cpu_to_be32(newcrc);
a322f70c
DW		 489}
490
a3163bf0 491#define DDF_INVALID_LEVEL 0xff
492#define DDF_NO_SECONDARY 0xff
493static int err_bad_md_layout(const mdu_array_info_t *array)
494{
495 pr_err("RAID%d layout %x with %d disks is unsupported for DDF\n",
496 array->level, array->layout, array->raid_disks);
497 return DDF_INVALID_LEVEL;
498}
499
500static int layout_md2ddf(const mdu_array_info_t *array,
501 struct vd_config *conf)
502{
503 __u16 prim_elmnt_count = __cpu_to_be16(array->raid_disks);
504 __u8 prl = DDF_INVALID_LEVEL, rlq = 0;
505 __u8 sec_elmnt_count = 1;
506 __u8 srl = DDF_NO_SECONDARY;
507
508 switch (array->level) {
509 case LEVEL_LINEAR:
510 prl = DDF_CONCAT;
511 break;
512 case 0:
513 rlq = DDF_RAID0_SIMPLE;
514 prl = DDF_RAID0;
515 break;
516 case 1:
517 switch (array->raid_disks) {
518 case 2:
519 rlq = DDF_RAID1_SIMPLE;
520 break;
521 case 3:
522 rlq = DDF_RAID1_MULTI;
523 break;
524 default:
525 return err_bad_md_layout(array);
526 }
527 prl = DDF_RAID1;
528 break;
529 case 4:
530 if (array->layout != 0)
531 return err_bad_md_layout(array);
532 rlq = DDF_RAID4_N;
533 prl = DDF_RAID4;
534 break;
535 case 5:
536 switch (array->layout) {
537 case ALGORITHM_LEFT_ASYMMETRIC:
538 rlq = DDF_RAID5_N_RESTART;
539 break;
540 case ALGORITHM_RIGHT_ASYMMETRIC:
541 rlq = DDF_RAID5_0_RESTART;
542 break;
543 case ALGORITHM_LEFT_SYMMETRIC:
544 rlq = DDF_RAID5_N_CONTINUE;
545 break;
546 case ALGORITHM_RIGHT_SYMMETRIC:
547 /* not mentioned in standard */
548 default:
549 return err_bad_md_layout(array);
550 }
551 prl = DDF_RAID5;
552 break;
553 case 6:
554 switch (array->layout) {
555 case ALGORITHM_ROTATING_N_RESTART:
556 rlq = DDF_RAID5_N_RESTART;
557 break;
558 case ALGORITHM_ROTATING_ZERO_RESTART:
559 rlq = DDF_RAID6_0_RESTART;
560 break;
561 case ALGORITHM_ROTATING_N_CONTINUE:
562 rlq = DDF_RAID5_N_CONTINUE;
563 break;
564 default:
565 return err_bad_md_layout(array);
566 }
567 prl = DDF_RAID6;
568 break;
569 case 10:
570 if (array->raid_disks % 2 == 0 && array->layout == 0x102) {
571 rlq = DDF_RAID1_SIMPLE;
572 prim_elmnt_count = __cpu_to_be16(2);
573 sec_elmnt_count = array->raid_disks / 2;
574 } else if (array->raid_disks % 3 == 0
575 && array->layout == 0x103) {
576 rlq = DDF_RAID1_MULTI;
577 prim_elmnt_count = __cpu_to_be16(3);
578 sec_elmnt_count = array->raid_disks / 3;
579 } else
580 return err_bad_md_layout(array);
581 srl = DDF_2SPANNED;
582 prl = DDF_RAID1;
583 break;
584 default:
585 return err_bad_md_layout(array);
586 }
587 conf->prl = prl;
588 conf->prim_elmnt_count = prim_elmnt_count;
589 conf->rlq = rlq;
590 conf->srl = srl;
591 conf->sec_elmnt_count = sec_elmnt_count;
592 return 0;
593}
594
8a2848a7 595static int err_bad_ddf_layout(const struct vd_config *conf)
596{
597 pr_err("DDF RAID %u qualifier %u with %u disks is unsupported\n",
598 conf->prl, conf->rlq, __be16_to_cpu(conf->prim_elmnt_count));
599 return -1;
600}
601
602static int layout_ddf2md(const struct vd_config *conf,
603 mdu_array_info_t *array)
604{
605 int level = LEVEL_UNSUPPORTED;
606 int layout = 0;
607 int raiddisks = __be16_to_cpu(conf->prim_elmnt_count);
608
609 if (conf->sec_elmnt_count > 1) {
610 /* see also check_secondary() */
611 if (conf->prl != DDF_RAID1 ||
612 (conf->srl != DDF_2STRIPED && conf->srl != DDF_2SPANNED)) {
613 pr_err("Unsupported secondary RAID level %u/%u\n",
614 conf->prl, conf->srl);
615 return -1;
616 }
617 if (raiddisks == 2 && conf->rlq == DDF_RAID1_SIMPLE)
618 layout = 0x102;
619 else if (raiddisks == 3 && conf->rlq == DDF_RAID1_MULTI)
620 layout = 0x103;
621 else
622 return err_bad_ddf_layout(conf);
623 raiddisks *= conf->sec_elmnt_count;
624 level = 10;
625 goto good;
626 }
627
628 switch (conf->prl) {
629 case DDF_CONCAT:
630 level = LEVEL_LINEAR;
631 break;
632 case DDF_RAID0:
633 if (conf->rlq != DDF_RAID0_SIMPLE)
634 return err_bad_ddf_layout(conf);
635 level = 0;
636 break;
637 case DDF_RAID1:
638 if (!((conf->rlq == DDF_RAID1_SIMPLE && raiddisks == 2) ||
639 (conf->rlq == DDF_RAID1_MULTI && raiddisks == 3)))
640 return err_bad_ddf_layout(conf);
641 level = 1;
642 break;
643 case DDF_RAID4:
644 if (conf->rlq != DDF_RAID4_N)
645 return err_bad_ddf_layout(conf);
646 level = 4;
647 break;
648 case DDF_RAID5:
649 switch (conf->rlq) {
650 case DDF_RAID5_N_RESTART:
651 layout = ALGORITHM_LEFT_ASYMMETRIC;
652 break;
653 case DDF_RAID5_0_RESTART:
654 layout = ALGORITHM_RIGHT_ASYMMETRIC;
655 break;
656 case DDF_RAID5_N_CONTINUE:
657 layout = ALGORITHM_LEFT_SYMMETRIC;
658 break;
659 default:
660 return err_bad_ddf_layout(conf);
661 }
662 level = 5;
663 break;
664 case DDF_RAID6:
665 switch (conf->rlq) {
666 case DDF_RAID5_N_RESTART:
667 layout = ALGORITHM_ROTATING_N_RESTART;
668 break;
669 case DDF_RAID6_0_RESTART:
670 layout = ALGORITHM_ROTATING_ZERO_RESTART;
671 break;
672 case DDF_RAID5_N_CONTINUE:
673 layout = ALGORITHM_ROTATING_N_CONTINUE;
674 break;
675 default:
676 return err_bad_ddf_layout(conf);
677 }
678 level = 6;
679 break;
680 default:
681 return err_bad_ddf_layout(conf);
682 };
683
684good:
685 array->level = level;
686 array->layout = layout;
687 array->raid_disks = raiddisks;
688 return 0;
689}
690
a322f70c
DW		 691static int load_ddf_header(int fd, unsigned long long lba,
692 unsigned long long size,
693 int type,
694 struct ddf_header *hdr, struct ddf_header *anchor)
695{
696 /* read a ddf header (primary or secondary) from fd/lba
697 * and check that it is consistent with anchor
698 * Need to check:
699 * magic, crc, guid, rev, and LBA's header_type, and
700 * everything after header_type must be the same
701 */
702 if (lba >= size-1)
703 return 0;
704
705 if (lseek64(fd, lba<<9, 0) < 0)
706 return 0;
707
708 if (read(fd, hdr, 512) != 512)
709 return 0;
710
711 if (hdr->magic != DDF_HEADER_MAGIC)
712 return 0;
713 if (calc_crc(hdr, 512) != hdr->crc)
714 return 0;
715 if (memcmp(anchor->guid, hdr->guid, DDF_GUID_LEN) != 0 ||
716 memcmp(anchor->revision, hdr->revision, 8) != 0 ||
717 anchor->primary_lba != hdr->primary_lba ||
718 anchor->secondary_lba != hdr->secondary_lba ||
719 hdr->type != type ||
720 memcmp(anchor->pad2, hdr->pad2, 512 -
721 offsetof(struct ddf_header, pad2)) != 0)
722 return 0;
723
724 /* Looks good enough to me... */
725 return 1;
726}
727
728static void *load_section(int fd, struct ddf_super *super, void *buf,
729 __u32 offset_be, __u32 len_be, int check)
730{
731 unsigned long long offset = __be32_to_cpu(offset_be);
732 unsigned long long len = __be32_to_cpu(len_be);
733 int dofree = (buf == NULL);
734
735 if (check)
736 if (len != 2 && len != 8 && len != 32
737 && len != 128 && len != 512)
738 return NULL;
739
740 if (len > 1024)
741 return NULL;
742 if (buf) {
743 /* All pre-allocated sections are a single block */
744 if (len != 1)
745 return NULL;
3d2c4fc7
DW		 746 } else if (posix_memalign(&buf, 512, len<<9) != 0)
747 buf = NULL;
6416d527 748
a322f70c
DW		 749 if (!buf)
750 return NULL;
751
752 if (super->active->type == 1)
753 offset += __be64_to_cpu(super->active->primary_lba);
754 else
755 offset += __be64_to_cpu(super->active->secondary_lba);
756
f21e18ca 757 if ((unsigned long long)lseek64(fd, offset<<9, 0) != (offset<<9)) {
a322f70c
DW		 758 if (dofree)
759 free(buf);
760 return NULL;
761 }
f21e18ca 762 if ((unsigned long long)read(fd, buf, len<<9) != (len<<9)) {
a322f70c
DW		 763 if (dofree)
764 free(buf);
765 return NULL;
766 }
767 return buf;
768}
769
770static int load_ddf_headers(int fd, struct ddf_super *super, char *devname)
771{
772 unsigned long long dsize;
773
774 get_dev_size(fd, NULL, &dsize);
775
776 if (lseek64(fd, dsize-512, 0) < 0) {
777 if (devname)
e7b84f9d
N		 778 pr_err("Cannot seek to anchor block on %s: %s\n",
779 devname, strerror(errno));
a322f70c
DW		 780 return 1;
781 }
782 if (read(fd, &super->anchor, 512) != 512) {
783 if (devname)
e7b84f9d
N		 784 pr_err("Cannot read anchor block on %s: %s\n",
785 devname, strerror(errno));
a322f70c
DW		 786 return 1;
787 }
788 if (super->anchor.magic != DDF_HEADER_MAGIC) {
789 if (devname)
e7b84f9d 790 pr_err("no DDF anchor found on %s\n",
a322f70c
DW		 791 devname);
792 return 2;
793 }
794 if (calc_crc(&super->anchor, 512) != super->anchor.crc) {
795 if (devname)
e7b84f9d 796 pr_err("bad CRC on anchor on %s\n",
a322f70c
DW		 797 devname);
798 return 2;
799 }
59e36268
NB		 800 if (memcmp(super->anchor.revision, DDF_REVISION_0, 8) != 0 &&
801 memcmp(super->anchor.revision, DDF_REVISION_2, 8) != 0) {
a322f70c 802 if (devname)
e7b84f9d 803 pr_err("can only support super revision"
59e36268
NB		 804 " %.8s and earlier, not %.8s on %s\n",
805 DDF_REVISION_2, super->anchor.revision,devname);
a322f70c
DW		 806 return 2;
807 }
dbeb699a 808 super->active = NULL;
a322f70c
DW		 809 if (load_ddf_header(fd, __be64_to_cpu(super->anchor.primary_lba),
810 dsize >> 9, 1,
811 &super->primary, &super->anchor) == 0) {
812 if (devname)
e7b84f9d
N		 813 pr_err("Failed to load primary DDF header "
814 "on %s\n", devname);
dbeb699a 815 } else
816 super->active = &super->primary;
a322f70c
DW		 817 if (load_ddf_header(fd, __be64_to_cpu(super->anchor.secondary_lba),
818 dsize >> 9, 2,
819 &super->secondary, &super->anchor)) {
820 if ((__be32_to_cpu(super->primary.seq)
821 < __be32_to_cpu(super->secondary.seq) &&
822 !super->secondary.openflag)
823 || (__be32_to_cpu(super->primary.seq)
824 == __be32_to_cpu(super->secondary.seq) &&
825 super->primary.openflag && !super->secondary.openflag)
dbeb699a 826 || super->active == NULL
a322f70c
DW		 827 )
828 super->active = &super->secondary;
dbeb699a 829 } else if (devname)
830 pr_err("Failed to load secondary DDF header on %s\n",
831 devname);
832 if (super->active == NULL)
833 return 2;
a322f70c
DW		 834 return 0;
835}
836
837static int load_ddf_global(int fd, struct ddf_super *super, char *devname)
838{
839 void *ok;
840 ok = load_section(fd, super, &super->controller,
841 super->active->controller_section_offset,
842 super->active->controller_section_length,
843 0);
844 super->phys = load_section(fd, super, NULL,
845 super->active->phys_section_offset,
846 super->active->phys_section_length,
847 1);
848 super->pdsize = __be32_to_cpu(super->active->phys_section_length) * 512;
849
850 super->virt = load_section(fd, super, NULL,
851 super->active->virt_section_offset,
852 super->active->virt_section_length,
853 1);
854 super->vdsize = __be32_to_cpu(super->active->virt_section_length) * 512;
855 if (!ok ||
856 !super->phys ||
857 !super->virt) {
858 free(super->phys);
859 free(super->virt);
a2349791
NB		 860 super->phys = NULL;
861 super->virt = NULL;
a322f70c
DW		 862 return 2;
863 }
864 super->conflist = NULL;
865 super->dlist = NULL;
8c3b8c2c
NB		 866
867 super->max_part = __be16_to_cpu(super->active->max_partitions);
868 super->mppe = __be16_to_cpu(super->active->max_primary_element_entries);
869 super->conf_rec_len = __be16_to_cpu(super->active->config_record_len);
a322f70c
DW		 870 return 0;
871}
872
3c48f7be 873#define DDF_UNUSED_BVD 0xff
874static int alloc_other_bvds(const struct ddf_super *ddf, struct vcl *vcl)
875{
876 unsigned int n_vds = vcl->conf.sec_elmnt_count - 1;
877 unsigned int i, vdsize;
878 void *p;
879 if (n_vds == 0) {
880 vcl->other_bvds = NULL;
881 return 0;
882 }
883 vdsize = ddf->conf_rec_len * 512;
884 if (posix_memalign(&p, 512, n_vds *
885 (vdsize + sizeof(struct vd_config *))) != 0)
886 return -1;
887 vcl->other_bvds = (struct vd_config **) (p + n_vds * vdsize);
888 for (i = 0; i < n_vds; i++) {
889 vcl->other_bvds[i] = p + i * vdsize;
890 memset(vcl->other_bvds[i], 0, vdsize);
891 vcl->other_bvds[i]->sec_elmnt_seq = DDF_UNUSED_BVD;
892 }
893 return 0;
894}
895
3dc821b0 896static void add_other_bvd(struct vcl *vcl, struct vd_config *vd,
897 unsigned int len)
898{
899 int i;
900 for (i = 0; i < vcl->conf.sec_elmnt_count-1; i++)
3c48f7be 901 if (vcl->other_bvds[i]->sec_elmnt_seq == vd->sec_elmnt_seq)
3dc821b0 902 break;
903
904 if (i < vcl->conf.sec_elmnt_count-1) {
905 if (vd->seqnum <= vcl->other_bvds[i]->seqnum)
906 return;
907 } else {
908 for (i = 0; i < vcl->conf.sec_elmnt_count-1; i++)
3c48f7be 909 if (vcl->other_bvds[i]->sec_elmnt_seq == DDF_UNUSED_BVD)
3dc821b0 910 break;
911 if (i == vcl->conf.sec_elmnt_count-1) {
912 pr_err("no space for sec level config %u, count is %u\n",
913 vd->sec_elmnt_seq, vcl->conf.sec_elmnt_count);
914 return;
915 }
3dc821b0 916 }
917 memcpy(vcl->other_bvds[i], vd, len);
918}
919
a322f70c
DW		 920static int load_ddf_local(int fd, struct ddf_super *super,
921 char *devname, int keep)
922{
923 struct dl *dl;
924 struct stat stb;
925 char *conf;
f21e18ca
N		 926 unsigned int i;
927 unsigned int confsec;
b2280677 928 int vnum;
f21e18ca 929 unsigned int max_virt_disks = __be16_to_cpu(super->active->max_vd_entries);
d2ca6449 930 unsigned long long dsize;
a322f70c
DW		 931
932 /* First the local disk info */
3d2c4fc7 933 if (posix_memalign((void**)&dl, 512,
6416d527 934 sizeof(*dl) +
3d2c4fc7 935 (super->max_part) * sizeof(dl->vlist[0])) != 0) {
e7b84f9d 936 pr_err("%s could not allocate disk info buffer\n",
3d2c4fc7
DW		 937 __func__);
938 return 1;
939 }
a322f70c
DW		 940
941 load_section(fd, super, &dl->disk,
942 super->active->data_section_offset,
943 super->active->data_section_length,
944 0);
503975b9 945 dl->devname = devname ? xstrdup(devname) : NULL;
598f0d58 946
a322f70c
DW		 947 fstat(fd, &stb);
948 dl->major = major(stb.st_rdev);
949 dl->minor = minor(stb.st_rdev);
950 dl->next = super->dlist;
951 dl->fd = keep ? fd : -1;
d2ca6449
NB		 952
953 dl->size = 0;
954 if (get_dev_size(fd, devname, &dsize))
955 dl->size = dsize >> 9;
097bcf00 956 /* If the disks have different sizes, the LBAs will differ
957 * between phys disks.
958 * At this point here, the values in super->active must be valid
959 * for this phys disk. */
960 dl->primary_lba = super->active->primary_lba;
961 dl->secondary_lba = super->active->secondary_lba;
962 dl->workspace_lba = super->active->workspace_lba;
b2280677 963 dl->spare = NULL;
f21e18ca 964 for (i = 0 ; i < super->max_part ; i++)
a322f70c
DW		 965 dl->vlist[i] = NULL;
966 super->dlist = dl;
59e36268 967 dl->pdnum = -1;
f21e18ca 968 for (i = 0; i < __be16_to_cpu(super->active->max_pd_entries); i++)
5575e7d9
NB		 969 if (memcmp(super->phys->entries[i].guid,
970 dl->disk.guid, DDF_GUID_LEN) == 0)
971 dl->pdnum = i;
972
a322f70c
DW		 973 /* Now the config list. */
974 /* 'conf' is an array of config entries, some of which are
975 * probably invalid. Those which are good need to be copied into
976 * the conflist
977 */
a322f70c
DW		 978
979 conf = load_section(fd, super, NULL,
980 super->active->config_section_offset,
981 super->active->config_section_length,
982 0);
983
b2280677 984 vnum = 0;
e223334f
N		 985 for (confsec = 0;
986 confsec < __be32_to_cpu(super->active->config_section_length);
987 confsec += super->conf_rec_len) {
a322f70c 988 struct vd_config *vd =
e223334f 989 (struct vd_config *)((char*)conf + confsec*512);
a322f70c
DW		 990 struct vcl *vcl;
991
b2280677
NB		 992 if (vd->magic == DDF_SPARE_ASSIGN_MAGIC) {
993 if (dl->spare)
994 continue;
3d2c4fc7
DW		 995 if (posix_memalign((void**)&dl->spare, 512,
996 super->conf_rec_len*512) != 0) {
e7b84f9d
N		 997 pr_err("%s could not allocate spare info buf\n",
998 __func__);
3d2c4fc7
DW		 999 return 1;
1000 }
613b0d17 1001
b2280677
NB		 1002 memcpy(dl->spare, vd, super->conf_rec_len*512);
1003 continue;
1004 }
a322f70c
DW		 1005 if (vd->magic != DDF_VD_CONF_MAGIC)
1006 continue;
1007 for (vcl = super->conflist; vcl; vcl = vcl->next) {
1008 if (memcmp(vcl->conf.guid,
1009 vd->guid, DDF_GUID_LEN) == 0)
1010 break;
1011 }
1012
1013 if (vcl) {
b2280677 1014 dl->vlist[vnum++] = vcl;
3dc821b0 1015 if (vcl->other_bvds != NULL &&
1016 vcl->conf.sec_elmnt_seq != vd->sec_elmnt_seq) {
1017 add_other_bvd(vcl, vd, super->conf_rec_len*512);
1018 continue;
1019 }
a322f70c
DW		 1020 if (__be32_to_cpu(vd->seqnum) <=
1021 __be32_to_cpu(vcl->conf.seqnum))
1022 continue;
59e36268 1023 } else {
3d2c4fc7 1024 if (posix_memalign((void**)&vcl, 512,
6416d527 1025 (super->conf_rec_len*512 +
3d2c4fc7 1026 offsetof(struct vcl, conf))) != 0) {
e7b84f9d
N		 1027 pr_err("%s could not allocate vcl buf\n",
1028 __func__);
3d2c4fc7
DW		 1029 return 1;
1030 }
a322f70c 1031 vcl->next = super->conflist;
59e36268 1032 vcl->block_sizes = NULL; /* FIXME not for CONCAT */
3c48f7be 1033 vcl->conf.sec_elmnt_count = vd->sec_elmnt_count;
1034 if (alloc_other_bvds(super, vcl) != 0) {
1035 pr_err("%s could not allocate other bvds\n",
1036 __func__);
1037 free(vcl);
1038 return 1;
1039 };
a322f70c 1040 super->conflist = vcl;
b2280677 1041 dl->vlist[vnum++] = vcl;
a322f70c 1042 }
8c3b8c2c 1043 memcpy(&vcl->conf, vd, super->conf_rec_len*512);
59e36268
NB		 1044 for (i=0; i < max_virt_disks ; i++)
1045 if (memcmp(super->virt->entries[i].guid,
1046 vcl->conf.guid, DDF_GUID_LEN)==0)
1047 break;
1048 if (i < max_virt_disks)
1049 vcl->vcnum = i;
a322f70c
DW		 1050 }
1051 free(conf);
1052
1053 return 0;
1054}
1055
1056#ifndef MDASSEMBLE
1057static int load_super_ddf_all(struct supertype *st, int fd,
e1902a7b 1058 void **sbp, char *devname);
a322f70c 1059#endif
37424f13
DW		 1060
1061static void free_super_ddf(struct supertype *st);
1062
a322f70c
DW		 1063static int load_super_ddf(struct supertype *st, int fd,
1064 char *devname)
1065{
1066 unsigned long long dsize;
1067 struct ddf_super *super;
1068 int rv;
1069
a322f70c
DW		 1070 if (get_dev_size(fd, devname, &dsize) == 0)
1071 return 1;
1072
b31df436 1073 if (!st->ignore_hw_compat && test_partition(fd))
691c6ee1
N		 1074 /* DDF is not allowed on partitions */
1075 return 1;
1076
a322f70c
DW		 1077 /* 32M is a lower bound */
1078 if (dsize <= 32*1024*1024) {
97320d7c 1079 if (devname)
e7b84f9d
N		 1080 pr_err("%s is too small for ddf: "
1081 "size is %llu sectors.\n",
1082 devname, dsize>>9);
97320d7c 1083 return 1;
a322f70c
DW		 1084 }
1085 if (dsize & 511) {
97320d7c 1086 if (devname)
e7b84f9d
N		 1087 pr_err("%s is an odd size for ddf: "
1088 "size is %llu bytes.\n",
1089 devname, dsize);
97320d7c 1090 return 1;
a322f70c
DW		 1091 }
1092
37424f13
DW		 1093 free_super_ddf(st);
1094
6416d527 1095 if (posix_memalign((void**)&super, 512, sizeof(*super))!= 0) {
e7b84f9d 1096 pr_err("malloc of %zu failed.\n",
a322f70c
DW		 1097 sizeof(*super));
1098 return 1;
1099 }
a2349791 1100 memset(super, 0, sizeof(*super));
a322f70c
DW		 1101
1102 rv = load_ddf_headers(fd, super, devname);
1103 if (rv) {
1104 free(super);
1105 return rv;
1106 }
1107
1108 /* Have valid headers and have chosen the best. Let's read in the rest*/
1109
1110 rv = load_ddf_global(fd, super, devname);
1111
1112 if (rv) {
1113 if (devname)
e7b84f9d
N		 1114 pr_err("Failed to load all information "
1115 "sections on %s\n", devname);
a322f70c
DW		 1116 free(super);
1117 return rv;
1118 }
1119
3d2c4fc7
DW		 1120 rv = load_ddf_local(fd, super, devname, 0);
1121
1122 if (rv) {
1123 if (devname)
e7b84f9d
N		 1124 pr_err("Failed to load all information "
1125 "sections on %s\n", devname);
3d2c4fc7
DW		 1126 free(super);
1127 return rv;
1128 }
a322f70c
DW		 1129
1130 /* Should possibly check the sections .... */
1131
1132 st->sb = super;
1133 if (st->ss == NULL) {
1134 st->ss = &super_ddf;
1135 st->minor_version = 0;
1136 st->max_devs = 512;
1137 }
1138 return 0;
1139
1140}
1141
1142static void free_super_ddf(struct supertype *st)
1143{
1144 struct ddf_super *ddf = st->sb;
1145 if (ddf == NULL)
1146 return;
1147 free(ddf->phys);
1148 free(ddf->virt);
1149 while (ddf->conflist) {
1150 struct vcl *v = ddf->conflist;
1151 ddf->conflist = v->next;
59e36268
NB		 1152 if (v->block_sizes)
1153 free(v->block_sizes);
3c48f7be 1154 if (v->other_bvds)
1155 /*
1156 v->other_bvds[0] points to beginning of buffer,
1157 see alloc_other_bvds()
1158 */
1159 free(v->other_bvds[0]);
a322f70c
DW		 1160 free(v);
1161 }
1162 while (ddf->dlist) {
1163 struct dl *d = ddf->dlist;
1164 ddf->dlist = d->next;
1165 if (d->fd >= 0)
1166 close(d->fd);
b2280677
NB		 1167 if (d->spare)
1168 free(d->spare);
a322f70c
DW		 1169 free(d);
1170 }
8a38cb04
N		 1171 while (ddf->add_list) {
1172 struct dl *d = ddf->add_list;
1173 ddf->add_list = d->next;
1174 if (d->fd >= 0)
1175 close(d->fd);
1176 if (d->spare)
1177 free(d->spare);
1178 free(d);
1179 }
a322f70c
DW		 1180 free(ddf);
1181 st->sb = NULL;
1182}
1183
1184static struct supertype *match_metadata_desc_ddf(char *arg)
1185{
1186 /* 'ddf' only support containers */
1187 struct supertype *st;
1188 if (strcmp(arg, "ddf") != 0 &&
1189 strcmp(arg, "default") != 0
1190 )
1191 return NULL;
1192
503975b9 1193 st = xcalloc(1, sizeof(*st));
a322f70c
DW		 1194 st->ss = &super_ddf;
1195 st->max_devs = 512;
1196 st->minor_version = 0;
1197 st->sb = NULL;
1198 return st;
1199}
1200
a322f70c
DW		 1201#ifndef MDASSEMBLE
1202
1203static mapping_t ddf_state[] = {
1204 { "Optimal", 0},
1205 { "Degraded", 1},
1206 { "Deleted", 2},
1207 { "Missing", 3},
1208 { "Failed", 4},
1209 { "Partially Optimal", 5},
1210 { "-reserved-", 6},
1211 { "-reserved-", 7},
1212 { NULL, 0}
1213};
1214
1215static mapping_t ddf_init_state[] = {
1216 { "Not Initialised", 0},
1217 { "QuickInit in Progress", 1},
1218 { "Fully Initialised", 2},
1219 { "*UNKNOWN*", 3},
1220 { NULL, 0}
1221};
1222static mapping_t ddf_access[] = {
1223 { "Read/Write", 0},
1224 { "Reserved", 1},
1225 { "Read Only", 2},
1226 { "Blocked (no access)", 3},
1227 { NULL ,0}
1228};
1229
1230static mapping_t ddf_level[] = {
1231 { "RAID0", DDF_RAID0},
1232 { "RAID1", DDF_RAID1},
1233 { "RAID3", DDF_RAID3},
1234 { "RAID4", DDF_RAID4},
1235 { "RAID5", DDF_RAID5},
1236 { "RAID1E",DDF_RAID1E},
1237 { "JBOD", DDF_JBOD},
1238 { "CONCAT",DDF_CONCAT},
1239 { "RAID5E",DDF_RAID5E},
1240 { "RAID5EE",DDF_RAID5EE},
1241 { "RAID6", DDF_RAID6},
1242 { NULL, 0}
1243};
1244static mapping_t ddf_sec_level[] = {
1245 { "Striped", DDF_2STRIPED},
1246 { "Mirrored", DDF_2MIRRORED},
1247 { "Concat", DDF_2CONCAT},
1248 { "Spanned", DDF_2SPANNED},
1249 { NULL, 0}
1250};
1251#endif
1252
fb9d0acb 1253static int all_ff(const char *guid)
42dc2744
N		 1254{
1255 int i;
1256 for (i = 0; i < DDF_GUID_LEN; i++)
1257 if (guid[i] != (char)0xff)
1258 return 0;
1259 return 1;
1260}
1261
a322f70c
DW		 1262#ifndef MDASSEMBLE
1263static void print_guid(char *guid, int tstamp)
1264{
1265 /* A GUIDs are part (or all) ASCII and part binary.
1266 * They tend to be space padded.
59e36268
NB		 1267 * We print the GUID in HEX, then in parentheses add
1268 * any initial ASCII sequence, and a possible
1269 * time stamp from bytes 16-19
a322f70c
DW		 1270 */
1271 int l = DDF_GUID_LEN;
1272 int i;
59e36268
NB		 1273
1274 for (i=0 ; i<DDF_GUID_LEN ; i++) {
1275 if ((i&3)==0 && i != 0) printf(":");
1276 printf("%02X", guid[i]&255);
1277 }
1278
cfccea8c 1279 printf("\n (");
a322f70c
DW		 1280 while (l && guid[l-1] == ' ')
1281 l--;
1282 for (i=0 ; i<l ; i++) {
1283 if (guid[i] >= 0x20 && guid[i] < 0x7f)
1284 fputc(guid[i], stdout);
1285 else
59e36268 1286 break;
a322f70c
DW		 1287 }
1288 if (tstamp) {
1289 time_t then = __be32_to_cpu(*(__u32*)(guid+16)) + DECADE;
1290 char tbuf[100];
1291 struct tm *tm;
1292 tm = localtime(&then);
59e36268 1293 strftime(tbuf, 100, " %D %T",tm);
a322f70c
DW		 1294 fputs(tbuf, stdout);
1295 }
59e36268 1296 printf(")");
a322f70c
DW		 1297}
1298
be9b9ef4 1299static const char *guid_str(const char *guid)
1300{
1301 static char buf[DDF_GUID_LEN*2+1];
1302 int i;
1303 char *p = buf;
1304 for (i = 0; i < DDF_GUID_LEN; i++)
1305 p += sprintf(p, "%02x", (unsigned char)guid[i]);
1306 *p = '\0';
1307 return (const char *) buf;
1308}
1309
a322f70c
DW		 1310static void examine_vd(int n, struct ddf_super *sb, char *guid)
1311{
8c3b8c2c 1312 int crl = sb->conf_rec_len;
a322f70c
DW		 1313 struct vcl *vcl;
1314
1315 for (vcl = sb->conflist ; vcl ; vcl = vcl->next) {
f21e18ca 1316 unsigned int i;
a322f70c
DW		 1317 struct vd_config *vc = &vcl->conf;
1318
1319 if (calc_crc(vc, crl*512) != vc->crc)
1320 continue;
1321 if (memcmp(vc->guid, guid, DDF_GUID_LEN) != 0)
1322 continue;
1323
1324 /* Ok, we know about this VD, let's give more details */
b06e3095 1325 printf(" Raid Devices[%d] : %d (", n,
a322f70c 1326 __be16_to_cpu(vc->prim_elmnt_count));
f21e18ca 1327 for (i = 0; i < __be16_to_cpu(vc->prim_elmnt_count); i++) {
b06e3095
N		 1328 int j;
1329 int cnt = __be16_to_cpu(sb->phys->used_pdes);
1330 for (j=0; j<cnt; j++)
1331 if (vc->phys_refnum[i] == sb->phys->entries[j].refnum)
1332 break;
1333 if (i) printf(" ");
1334 if (j < cnt)
1335 printf("%d", j);
1336 else
1337 printf("--");
1338 }
1339 printf(")\n");
1340 if (vc->chunk_shift != 255)
613b0d17
N		 1341 printf(" Chunk Size[%d] : %d sectors\n", n,
1342 1 << vc->chunk_shift);
a322f70c
DW		 1343 printf(" Raid Level[%d] : %s\n", n,
1344 map_num(ddf_level, vc->prl)?:"-unknown-");
1345 if (vc->sec_elmnt_count != 1) {
1346 printf(" Secondary Position[%d] : %d of %d\n", n,
1347 vc->sec_elmnt_seq, vc->sec_elmnt_count);
1348 printf(" Secondary Level[%d] : %s\n", n,
1349 map_num(ddf_sec_level, vc->srl) ?: "-unknown-");
1350 }
1351 printf(" Device Size[%d] : %llu\n", n,
c9b6907b 1352 (unsigned long long)__be64_to_cpu(vc->blocks)/2);
a322f70c 1353 printf(" Array Size[%d] : %llu\n", n,
c9b6907b 1354 (unsigned long long)__be64_to_cpu(vc->array_blocks)/2);
a322f70c
DW		 1355 }
1356}
1357
1358static void examine_vds(struct ddf_super *sb)
1359{
1360 int cnt = __be16_to_cpu(sb->virt->populated_vdes);
fb9d0acb 1361 unsigned int i;
a322f70c
DW		 1362 printf(" Virtual Disks : %d\n", cnt);
1363
fb9d0acb 1364 for (i = 0; i < __be16_to_cpu(sb->virt->max_vdes); i++) {
a322f70c 1365 struct virtual_entry *ve = &sb->virt->entries[i];
fb9d0acb 1366 if (all_ff(ve->guid))
1367 continue;
b06e3095 1368 printf("\n");
a322f70c
DW		 1369 printf(" VD GUID[%d] : ", i); print_guid(ve->guid, 1);
1370 printf("\n");
1371 printf(" unit[%d] : %d\n", i, __be16_to_cpu(ve->unit));
1372 printf(" state[%d] : %s, %s%s\n", i,
1373 map_num(ddf_state, ve->state & 7),
1374 (ve->state & 8) ? "Morphing, ": "",
1375 (ve->state & 16)? "Not Consistent" : "Consistent");
1376 printf(" init state[%d] : %s\n", i,
1377 map_num(ddf_init_state, ve->init_state&3));
1378 printf(" access[%d] : %s\n", i,
1379 map_num(ddf_access, (ve->init_state>>6) & 3));
1380 printf(" Name[%d] : %.16s\n", i, ve->name);
1381 examine_vd(i, sb, ve->guid);
1382 }
1383 if (cnt) printf("\n");
1384}
1385
1386static void examine_pds(struct ddf_super *sb)
1387{
1388 int cnt = __be16_to_cpu(sb->phys->used_pdes);
1389 int i;
1390 struct dl *dl;
1391 printf(" Physical Disks : %d\n", cnt);
962371a5 1392 printf(" Number RefNo Size Device Type/State\n");
a322f70c
DW		 1393
1394 for (i=0 ; i<cnt ; i++) {
1395 struct phys_disk_entry *pd = &sb->phys->entries[i];
1396 int type = __be16_to_cpu(pd->type);
1397 int state = __be16_to_cpu(pd->state);
1398
b06e3095
N		 1399 //printf(" PD GUID[%d] : ", i); print_guid(pd->guid, 0);
1400 //printf("\n");
1401 printf(" %3d %08x ", i,
a322f70c 1402 __be32_to_cpu(pd->refnum));
613b0d17 1403 printf("%8lluK ",
c9b6907b 1404 (unsigned long long)__be64_to_cpu(pd->config_size)>>1);
b06e3095
N		 1405 for (dl = sb->dlist; dl ; dl = dl->next) {
1406 if (dl->disk.refnum == pd->refnum) {
1407 char *dv = map_dev(dl->major, dl->minor, 0);
1408 if (dv) {
962371a5 1409 printf("%-15s", dv);
b06e3095
N		 1410 break;
1411 }
1412 }
1413 }
1414 if (!dl)
962371a5 1415 printf("%15s","");
b06e3095 1416 printf(" %s%s%s%s%s",
a322f70c 1417 (type&2) ? "active":"",
b06e3095 1418 (type&4) ? "Global-Spare":"",
a322f70c
DW		 1419 (type&8) ? "spare" : "",
1420 (type&16)? ", foreign" : "",
1421 (type&32)? "pass-through" : "");
18cb4496
N		 1422 if (state & DDF_Failed)
1423 /* This over-rides these three */
1424 state &= ~(DDF_Online|DDF_Rebuilding|DDF_Transition);
b06e3095 1425 printf("/%s%s%s%s%s%s%s",
a322f70c
DW		 1426 (state&1)? "Online": "Offline",
1427 (state&2)? ", Failed": "",
1428 (state&4)? ", Rebuilding": "",
1429 (state&8)? ", in-transition": "",
b06e3095
N		 1430 (state&16)? ", SMART-errors": "",
1431 (state&32)? ", Unrecovered-Read-Errors": "",
a322f70c 1432 (state&64)? ", Missing" : "");
a322f70c
DW		 1433 printf("\n");
1434 }
1435}
1436
1437static void examine_super_ddf(struct supertype *st, char *homehost)
1438{
1439 struct ddf_super *sb = st->sb;
1440
1441 printf(" Magic : %08x\n", __be32_to_cpu(sb->anchor.magic));
1442 printf(" Version : %.8s\n", sb->anchor.revision);
598f0d58
NB		 1443 printf("Controller GUID : "); print_guid(sb->controller.guid, 0);
1444 printf("\n");
1445 printf(" Container GUID : "); print_guid(sb->anchor.guid, 1);
a322f70c
DW		 1446 printf("\n");
1447 printf(" Seq : %08x\n", __be32_to_cpu(sb->active->seq));
1448 printf(" Redundant hdr : %s\n", sb->secondary.magic == DDF_HEADER_MAGIC
1449 ?"yes" : "no");
1450 examine_vds(sb);
1451 examine_pds(sb);
1452}
1453
a5d85af7 1454static void getinfo_super_ddf(struct supertype *st, struct mdinfo *info, char *map);
ff54de6e 1455
bedbf68a 1456static void uuid_from_ddf_guid(const char *guid, int uuid[4]);
42dc2744 1457static void uuid_from_super_ddf(struct supertype *st, int uuid[4]);
ff54de6e 1458
bedbf68a 1459static unsigned int get_vd_num_of_subarray(struct supertype *st)
1460{
1461 /*
1462 * Figure out the VD number for this supertype.
1463 * Returns DDF_CONTAINER for the container itself,
1464 * and DDF_NOTFOUND on error.
1465 */
1466 struct ddf_super *ddf = st->sb;
1467 struct mdinfo *sra;
1468 char *sub, *end;
1469 unsigned int vcnum;
1470
1471 if (*st->container_devnm == '\0')
1472 return DDF_CONTAINER;
1473
1474 sra = sysfs_read(-1, st->devnm, GET_VERSION);
1475 if (!sra || sra->array.major_version != -1 ||
1476 sra->array.minor_version != -2 ||
1477 !is_subarray(sra->text_version))
1478 return DDF_NOTFOUND;
1479
1480 sub = strchr(sra->text_version + 1, '/');
1481 if (sub != NULL)
1482 vcnum = strtoul(sub + 1, &end, 10);
1483 if (sub == NULL || *sub == '\0' || *end != '\0' ||
1484 vcnum >= __be16_to_cpu(ddf->active->max_vd_entries))
1485 return DDF_NOTFOUND;
1486
1487 return vcnum;
1488}
1489
061f2c6a 1490static void brief_examine_super_ddf(struct supertype *st, int verbose)
4737ae25
N		 1491{
1492 /* We just write a generic DDF ARRAY entry
1493 */
1494 struct mdinfo info;
1495 char nbuf[64];
a5d85af7 1496 getinfo_super_ddf(st, &info, NULL);
4737ae25
N		 1497 fname_from_uuid(st, &info, nbuf, ':');
1498
1499 printf("ARRAY metadata=ddf UUID=%s\n", nbuf + 5);
1500}
1501
1502static void brief_examine_subarrays_ddf(struct supertype *st, int verbose)
a322f70c
DW		 1503{
1504 /* We just write a generic DDF ARRAY entry
a322f70c 1505 */
42dc2744 1506 struct ddf_super *ddf = st->sb;
ff54de6e 1507 struct mdinfo info;
f21e18ca 1508 unsigned int i;
ff54de6e 1509 char nbuf[64];
a5d85af7 1510 getinfo_super_ddf(st, &info, NULL);
ff54de6e 1511 fname_from_uuid(st, &info, nbuf, ':');
42dc2744 1512
f21e18ca 1513 for (i = 0; i < __be16_to_cpu(ddf->virt->max_vdes); i++) {
42dc2744
N		 1514 struct virtual_entry *ve = &ddf->virt->entries[i];
1515 struct vcl vcl;
1516 char nbuf1[64];
1517 if (all_ff(ve->guid))
1518 continue;
1519 memcpy(vcl.conf.guid, ve->guid, DDF_GUID_LEN);
1520 ddf->currentconf =&vcl;
1521 uuid_from_super_ddf(st, info.uuid);
1522 fname_from_uuid(st, &info, nbuf1, ':');
1523 printf("ARRAY container=%s member=%d UUID=%s\n",
1524 nbuf+5, i, nbuf1+5);
1525 }
a322f70c
DW		 1526}
1527
bceedeec
N		 1528static void export_examine_super_ddf(struct supertype *st)
1529{
1530 struct mdinfo info;
1531 char nbuf[64];
a5d85af7 1532 getinfo_super_ddf(st, &info, NULL);
bceedeec
N		 1533 fname_from_uuid(st, &info, nbuf, ':');
1534 printf("MD_METADATA=ddf\n");
1535 printf("MD_LEVEL=container\n");
1536 printf("MD_UUID=%s\n", nbuf+5);
1537}
bceedeec 1538
74db60b0
N		 1539static int copy_metadata_ddf(struct supertype *st, int from, int to)
1540{
1541 void *buf;
1542 unsigned long long dsize, offset;
1543 int bytes;
1544 struct ddf_header *ddf;
1545 int written = 0;
1546
1547 /* The meta consists of an anchor, a primary, and a secondary.
1548 * This all lives at the end of the device.
1549 * So it is easiest to find the earliest of primary and
1550 * secondary, and copy everything from there.
1551 *
1552 * Anchor is 512 from end It contains primary_lba and secondary_lba
1553 * we choose one of those
1554 */
1555
1556 if (posix_memalign(&buf, 4096, 4096) != 0)
1557 return 1;
1558
1559 if (!get_dev_size(from, NULL, &dsize))
1560 goto err;
1561
1562 if (lseek64(from, dsize-512, 0) < 0)
1563 goto err;
1564 if (read(from, buf, 512) != 512)
1565 goto err;
1566 ddf = buf;
1567 if (ddf->magic != DDF_HEADER_MAGIC ||
1568 calc_crc(ddf, 512) != ddf->crc ||
1569 (memcmp(ddf->revision, DDF_REVISION_0, 8) != 0 &&
1570 memcmp(ddf->revision, DDF_REVISION_2, 8) != 0))
1571 goto err;
1572
1573 offset = dsize - 512;
1574 if ((__be64_to_cpu(ddf->primary_lba) << 9) < offset)
1575 offset = __be64_to_cpu(ddf->primary_lba) << 9;
1576 if ((__be64_to_cpu(ddf->secondary_lba) << 9) < offset)
1577 offset = __be64_to_cpu(ddf->secondary_lba) << 9;
1578
1579 bytes = dsize - offset;
1580
1581 if (lseek64(from, offset, 0) < 0 ||
1582 lseek64(to, offset, 0) < 0)
1583 goto err;
1584 while (written < bytes) {
1585 int n = bytes - written;
1586 if (n > 4096)
1587 n = 4096;
1588 if (read(from, buf, n) != n)
1589 goto err;
1590 if (write(to, buf, n) != n)
1591 goto err;
1592 written += n;
1593 }
1594 free(buf);
1595 return 0;
1596err:
1597 free(buf);
1598 return 1;
1599}
1600
a322f70c
DW		 1601static void detail_super_ddf(struct supertype *st, char *homehost)
1602{
1603 /* FIXME later
1604 * Could print DDF GUID
1605 * Need to find which array
1606 * If whole, briefly list all arrays
1607 * If one, give name
1608 */
1609}
1610
1611static void brief_detail_super_ddf(struct supertype *st)
1612{
ff54de6e
N		 1613 struct mdinfo info;
1614 char nbuf[64];
bedbf68a 1615 struct ddf_super *ddf = st->sb;
1616 unsigned int vcnum = get_vd_num_of_subarray(st);
1617 if (vcnum == DDF_CONTAINER)
1618 uuid_from_super_ddf(st, info.uuid);
1619 else if (vcnum == DDF_NOTFOUND)
1620 return;
1621 else
1622 uuid_from_ddf_guid(ddf->virt->entries[vcnum].guid, info.uuid);
ff54de6e
N		 1623 fname_from_uuid(st, &info, nbuf,':');
1624 printf(" UUID=%s", nbuf + 5);
a322f70c 1625}
a322f70c
DW		 1626#endif
1627
1628static int match_home_ddf(struct supertype *st, char *homehost)
1629{
1630 /* It matches 'this' host if the controller is a
1631 * Linux-MD controller with vendor_data matching
1632 * the hostname
1633 */
1634 struct ddf_super *ddf = st->sb;
f21e18ca 1635 unsigned int len;
d1d3482b
N		 1636
1637 if (!homehost)
1638 return 0;
1639 len = strlen(homehost);
a322f70c
DW		 1640
1641 return (memcmp(ddf->controller.guid, T10, 8) == 0 &&
1642 len < sizeof(ddf->controller.vendor_data) &&
1643 memcmp(ddf->controller.vendor_data, homehost,len) == 0 &&
1644 ddf->controller.vendor_data[len] == 0);
1645}
1646
0e600426 1647#ifndef MDASSEMBLE
baba3f4e 1648static int find_index_in_bvd(const struct ddf_super *ddf,
1649 const struct vd_config *conf, unsigned int n,
1650 unsigned int *n_bvd)
1651{
1652 /*
1653 * Find the index of the n-th valid physical disk in this BVD
1654 */
1655 unsigned int i, j;
1656 for (i = 0, j = 0; i < ddf->mppe &&
1657 j < __be16_to_cpu(conf->prim_elmnt_count); i++) {
1658 if (conf->phys_refnum[i] != 0xffffffff) {
1659 if (n == j) {
1660 *n_bvd = i;
1661 return 1;
1662 }
1663 j++;
1664 }
1665 }
1666 dprintf("%s: couldn't find BVD member %u (total %u)\n",
1667 __func__, n, __be16_to_cpu(conf->prim_elmnt_count));
1668 return 0;
1669}
1670
1671static struct vd_config *find_vdcr(struct ddf_super *ddf, unsigned int inst,
1672 unsigned int n,
1673 unsigned int *n_bvd, struct vcl **vcl)
a322f70c 1674{
7a7cc504 1675 struct vcl *v;
59e36268 1676
baba3f4e 1677 for (v = ddf->conflist; v; v = v->next) {
1678 unsigned int nsec, ibvd;
1679 struct vd_config *conf;
1680 if (inst != v->vcnum)
1681 continue;
1682 conf = &v->conf;
1683 if (conf->sec_elmnt_count == 1) {
1684 if (find_index_in_bvd(ddf, conf, n, n_bvd)) {
1685 *vcl = v;
1686 return conf;
1687 } else
1688 goto bad;
1689 }
1690 if (v->other_bvds == NULL) {
1691 pr_err("%s: BUG: other_bvds is NULL, nsec=%u\n",
1692 __func__, conf->sec_elmnt_count);
1693 goto bad;
1694 }
1695 nsec = n / __be16_to_cpu(conf->prim_elmnt_count);
1696 if (conf->sec_elmnt_seq != nsec) {
1697 for (ibvd = 1; ibvd < conf->sec_elmnt_count; ibvd++) {
baba3f4e 1698 if (v->other_bvds[ibvd-1]->sec_elmnt_seq
1699 == nsec)
1700 break;
1701 }
1702 if (ibvd == conf->sec_elmnt_count)
1703 goto bad;
1704 conf = v->other_bvds[ibvd-1];
1705 }
1706 if (!find_index_in_bvd(ddf, conf,
1707 n - nsec*conf->sec_elmnt_count, n_bvd))
1708 goto bad;
1709 dprintf("%s: found disk %u as member %u in bvd %d of array %u\n"
1710 , __func__, n, *n_bvd, ibvd-1, inst);
1711 *vcl = v;
1712 return conf;
1713 }
1714bad:
1715 pr_err("%s: Could't find disk %d in array %u\n", __func__, n, inst);
7a7cc504
NB		 1716 return NULL;
1717}
0e600426 1718#endif
7a7cc504 1719
5ec636b7 1720static int find_phys(const struct ddf_super *ddf, __u32 phys_refnum)
7a7cc504
NB		 1721{
1722 /* Find the entry in phys_disk which has the given refnum
1723 * and return it's index
1724 */
f21e18ca
N		 1725 unsigned int i;
1726 for (i = 0; i < __be16_to_cpu(ddf->phys->max_pdes); i++)
7a7cc504
NB		 1727 if (ddf->phys->entries[i].refnum == phys_refnum)
1728 return i;
1729 return -1;
a322f70c
DW		 1730}
1731
bedbf68a 1732static void uuid_from_ddf_guid(const char *guid, int uuid[4])
1733{
1734 char buf[20];
1735 struct sha1_ctx ctx;
1736 sha1_init_ctx(&ctx);
1737 sha1_process_bytes(guid, DDF_GUID_LEN, &ctx);
1738 sha1_finish_ctx(&ctx, buf);
1739 memcpy(uuid, buf, 4*4);
1740}
1741
a322f70c
DW		 1742static void uuid_from_super_ddf(struct supertype *st, int uuid[4])
1743{
1744 /* The uuid returned here is used for:
1745 * uuid to put into bitmap file (Create, Grow)
1746 * uuid for backup header when saving critical section (Grow)
1747 * comparing uuids when re-adding a device into an array
51006d85
N		 1748 * In these cases the uuid required is that of the data-array,
1749 * not the device-set.
1750 * uuid to recognise same set when adding a missing device back
1751 * to an array. This is a uuid for the device-set.
613b0d17 1752 *
a322f70c
DW		 1753 * For each of these we can make do with a truncated
1754 * or hashed uuid rather than the original, as long as
1755 * everyone agrees.
a322f70c
DW		 1756 * In the case of SVD we assume the BVD is of interest,
1757 * though that might be the case if a bitmap were made for
1758 * a mirrored SVD - worry about that later.
1759 * So we need to find the VD configuration record for the
1760 * relevant BVD and extract the GUID and Secondary_Element_Seq.
1761 * The first 16 bytes of the sha1 of these is used.
1762 */
1763 struct ddf_super *ddf = st->sb;
d2ca6449 1764 struct vcl *vcl = ddf->currentconf;
c5afc314 1765 char *guid;
a322f70c 1766
c5afc314
N		 1767 if (vcl)
1768 guid = vcl->conf.guid;
1769 else
1770 guid = ddf->anchor.guid;
bedbf68a 1771 uuid_from_ddf_guid(guid, uuid);
a322f70c
DW		 1772}
1773
a5d85af7 1774static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info, char *map);
78e44928 1775
a5d85af7 1776static void getinfo_super_ddf(struct supertype *st, struct mdinfo *info, char *map)
a322f70c
DW		 1777{
1778 struct ddf_super *ddf = st->sb;
a5d85af7 1779 int map_disks = info->array.raid_disks;
90fa1a29 1780 __u32 *cptr;
a322f70c 1781
78e44928 1782 if (ddf->currentconf) {
a5d85af7 1783 getinfo_super_ddf_bvd(st, info, map);
78e44928
NB		 1784 return;
1785 }
95eeceeb 1786 memset(info, 0, sizeof(*info));
78e44928 1787
a322f70c
DW		 1788 info->array.raid_disks = __be16_to_cpu(ddf->phys->used_pdes);
1789 info->array.level = LEVEL_CONTAINER;
1790 info->array.layout = 0;
1791 info->array.md_minor = -1;
90fa1a29
JS		 1792 cptr = (__u32 *)(ddf->anchor.guid + 16);
1793 info->array.ctime = DECADE + __be32_to_cpu(*cptr);
1794
a322f70c
DW		 1795 info->array.utime = 0;
1796 info->array.chunk_size = 0;
510242aa 1797 info->container_enough = 1;
a322f70c 1798
a322f70c
DW		 1799 info->disk.major = 0;
1800 info->disk.minor = 0;
cba0191b
NB		 1801 if (ddf->dlist) {
1802 info->disk.number = __be32_to_cpu(ddf->dlist->disk.refnum);
59e36268 1803 info->disk.raid_disk = find_phys(ddf, ddf->dlist->disk.refnum);
d2ca6449
NB		 1804
1805 info->data_offset = __be64_to_cpu(ddf->phys->
613b0d17
N		 1806 entries[info->disk.raid_disk].
1807 config_size);
d2ca6449 1808 info->component_size = ddf->dlist->size - info->data_offset;
cba0191b
NB		 1809 } else {
1810 info->disk.number = -1;
661dce36 1811 info->disk.raid_disk = -1;
cba0191b
NB		 1812// info->disk.raid_disk = find refnum in the table and use index;
1813 }
f22385f9 1814 info->disk.state = (1 << MD_DISK_SYNC) | (1 << MD_DISK_ACTIVE);
a19c88b8 1815
921d9e16 1816 info->recovery_start = MaxSector;
a19c88b8 1817 info->reshape_active = 0;
6e75048b 1818 info->recovery_blocked = 0;
c5afc314 1819 info->name[0] = 0;
a322f70c 1820
f35f2525
N		 1821 info->array.major_version = -1;
1822 info->array.minor_version = -2;
159c3a1a 1823 strcpy(info->text_version, "ddf");
a67dd8cc 1824 info->safe_mode_delay = 0;
159c3a1a 1825
c5afc314 1826 uuid_from_super_ddf(st, info->uuid);
a322f70c 1827
a5d85af7
N		 1828 if (map) {
1829 int i;
1830 for (i = 0 ; i < map_disks; i++) {
1831 if (i < info->array.raid_disks &&
1832 (__be16_to_cpu(ddf->phys->entries[i].state) & DDF_Online) &&
1833 !(__be16_to_cpu(ddf->phys->entries[i].state) & DDF_Failed))
1834 map[i] = 1;
1835 else
1836 map[i] = 0;
1837 }
1838 }
a322f70c
DW		 1839}
1840
a5d85af7 1841static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info, char *map)
a322f70c
DW		 1842{
1843 struct ddf_super *ddf = st->sb;
d2ca6449
NB		 1844 struct vcl *vc = ddf->currentconf;
1845 int cd = ddf->currentdev;
ddf94a43 1846 int n_prim;
db42fa9b 1847 int j;
8592f29d 1848 struct dl *dl;
a5d85af7 1849 int map_disks = info->array.raid_disks;
90fa1a29 1850 __u32 *cptr;
ddf94a43 1851 struct vd_config *conf;
a322f70c 1852
95eeceeb 1853 memset(info, 0, sizeof(*info));
8a2848a7 1854 if (layout_ddf2md(&vc->conf, &info->array) == -1)
1855 return;
a322f70c 1856 info->array.md_minor = -1;
90fa1a29
JS		 1857 cptr = (__u32 *)(vc->conf.guid + 16);
1858 info->array.ctime = DECADE + __be32_to_cpu(*cptr);
d2ca6449
NB		 1859 info->array.utime = DECADE + __be32_to_cpu(vc->conf.timestamp);
1860 info->array.chunk_size = 512 << vc->conf.chunk_shift;
da9b4a62 1861 info->custom_array_size = 0;
d2ca6449 1862
ddf94a43 1863 conf = &vc->conf;
1864 n_prim = __be16_to_cpu(conf->prim_elmnt_count);
1865 if (conf->sec_elmnt_count > 1 && cd >= n_prim) {
1866 int ibvd = cd / n_prim - 1;
1867 cd %= n_prim;
1868 conf = vc->other_bvds[ibvd];
1869 }
1870
f21e18ca 1871 if (cd >= 0 && (unsigned)cd < ddf->mppe) {
57a66662 1872 info->data_offset =
1873 __be64_to_cpu(LBA_OFFSET(ddf, &vc->conf)[cd]);
d2ca6449
NB		 1874 if (vc->block_sizes)
1875 info->component_size = vc->block_sizes[cd];
1876 else
1877 info->component_size = __be64_to_cpu(vc->conf.blocks);
1878 }
a322f70c 1879
fb204fb2 1880 for (dl = ddf->dlist; dl ; dl = dl->next)
f5ded787 1881 if (dl->disk.refnum == conf->phys_refnum[cd])
fb204fb2
N		 1882 break;
1883
a322f70c
DW		 1884 info->disk.major = 0;
1885 info->disk.minor = 0;
fb204fb2 1886 info->disk.state = 0;
8592f29d
N		 1887 if (dl) {
1888 info->disk.major = dl->major;
1889 info->disk.minor = dl->minor;
7c3fb3ec 1890 info->disk.raid_disk = cd + conf->sec_elmnt_seq
1891 * __be16_to_cpu(conf->prim_elmnt_count);
fb204fb2
N		 1892 info->disk.number = dl->pdnum;
1893 info->disk.state = (1<<MD_DISK_SYNC)|(1<<MD_DISK_ACTIVE);
8592f29d 1894 }
a322f70c 1895
103f2410
NB		 1896 info->container_member = ddf->currentconf->vcnum;
1897
921d9e16 1898 info->recovery_start = MaxSector;
80d26cb2 1899 info->resync_start = 0;
624c5ad4 1900 info->reshape_active = 0;
6e75048b 1901 info->recovery_blocked = 0;
80d26cb2
NB		 1902 if (!(ddf->virt->entries[info->container_member].state
1903 & DDF_state_inconsistent) &&
1904 (ddf->virt->entries[info->container_member].init_state
1905 & DDF_initstate_mask)
1906 == DDF_init_full)
b7528a20 1907 info->resync_start = MaxSector;
80d26cb2 1908
a322f70c
DW		 1909 uuid_from_super_ddf(st, info->uuid);
1910
f35f2525
N		 1911 info->array.major_version = -1;
1912 info->array.minor_version = -2;
9b63e648 1913 sprintf(info->text_version, "/%s/%d",
4dd2df09 1914 st->container_devnm,
9b63e648 1915 info->container_member);
a67dd8cc 1916 info->safe_mode_delay = 200;
159c3a1a 1917
db42fa9b
N		 1918 memcpy(info->name, ddf->virt->entries[info->container_member].name, 16);
1919 info->name[16]=0;
1920 for(j=0; j<16; j++)
1921 if (info->name[j] == ' ')
1922 info->name[j] = 0;
a5d85af7
N		 1923
1924 if (map)
1925 for (j = 0; j < map_disks; j++) {
1926 map[j] = 0;
1927 if (j < info->array.raid_disks) {
1928 int i = find_phys(ddf, vc->conf.phys_refnum[j]);
613b0d17 1929 if (i >= 0 &&
a5d85af7
N		 1930 (__be16_to_cpu(ddf->phys->entries[i].state) & DDF_Online) &&
1931 !(__be16_to_cpu(ddf->phys->entries[i].state) & DDF_Failed))
1932 map[i] = 1;
1933 }
1934 }
a322f70c
DW		 1935}
1936
1937static int update_super_ddf(struct supertype *st, struct mdinfo *info,
1938 char *update,
1939 char *devname, int verbose,
1940 int uuid_set, char *homehost)
1941{
1942 /* For 'assemble' and 'force' we need to return non-zero if any
1943 * change was made. For others, the return value is ignored.
1944 * Update options are:
1945 * force-one : This device looks a bit old but needs to be included,
1946 * update age info appropriately.
1947 * assemble: clear any 'faulty' flag to allow this device to
1948 * be assembled.
1949 * force-array: Array is degraded but being forced, mark it clean
1950 * if that will be needed to assemble it.
1951 *
1952 * newdev: not used ????
1953 * grow: Array has gained a new device - this is currently for
1954 * linear only
1955 * resync: mark as dirty so a resync will happen.
59e36268 1956 * uuid: Change the uuid of the array to match what is given
a322f70c
DW		 1957 * homehost: update the recorded homehost
1958 * name: update the name - preserving the homehost
1959 * _reshape_progress: record new reshape_progress position.
1960 *
1961 * Following are not relevant for this version:
1962 * sparc2.2 : update from old dodgey metadata
1963 * super-minor: change the preferred_minor number
1964 * summaries: update redundant counters.
1965 */
1966 int rv = 0;
1967// struct ddf_super *ddf = st->sb;
7a7cc504 1968// struct vd_config *vd = find_vdcr(ddf, info->container_member);
a322f70c
DW		 1969// struct virtual_entry *ve = find_ve(ddf);
1970
a322f70c
DW		 1971 /* we don't need to handle "force-*" or "assemble" as
1972 * there is no need to 'trick' the kernel. We the metadata is
1973 * first updated to activate the array, all the implied modifications
1974 * will just happen.
1975 */
1976
1977 if (strcmp(update, "grow") == 0) {
1978 /* FIXME */
1e2b2765 1979 } else if (strcmp(update, "resync") == 0) {
a322f70c 1980// info->resync_checkpoint = 0;
1e2b2765 1981 } else if (strcmp(update, "homehost") == 0) {
a322f70c
DW		 1982 /* homehost is stored in controller->vendor_data,
1983 * or it is when we are the vendor
1984 */
1985// if (info->vendor_is_local)
1986// strcpy(ddf->controller.vendor_data, homehost);
1e2b2765 1987 rv = -1;
f49208ec 1988 } else if (strcmp(update, "name") == 0) {
a322f70c
DW		 1989 /* name is stored in virtual_entry->name */
1990// memset(ve->name, ' ', 16);
1991// strncpy(ve->name, info->name, 16);
1e2b2765 1992 rv = -1;
f49208ec 1993 } else if (strcmp(update, "_reshape_progress") == 0) {
a322f70c 1994 /* We don't support reshape yet */
f49208ec
N		 1995 } else if (strcmp(update, "assemble") == 0 ) {
1996 /* Do nothing, just succeed */
1997 rv = 0;
1e2b2765
N		 1998 } else
1999 rv = -1;
a322f70c
DW		 2000
2001// update_all_csum(ddf);
2002
2003 return rv;
2004}
2005
5f8097be
NB		 2006static void make_header_guid(char *guid)
2007{
2008 __u32 stamp;
5f8097be
NB		 2009 /* Create a DDF Header of Virtual Disk GUID */
2010
2011 /* 24 bytes of fiction required.
2012 * first 8 are a 'vendor-id' - "Linux-MD"
2013 * next 8 are controller type.. how about 0X DEAD BEEF 0000 0000
2014 * Remaining 8 random number plus timestamp
2015 */
2016 memcpy(guid, T10, sizeof(T10));
2017 stamp = __cpu_to_be32(0xdeadbeef);
2018 memcpy(guid+8, &stamp, 4);
2019 stamp = __cpu_to_be32(0);
2020 memcpy(guid+12, &stamp, 4);
2021 stamp = __cpu_to_be32(time(0) - DECADE);
2022 memcpy(guid+16, &stamp, 4);
bfb7ea78 2023 stamp = random32();
5f8097be 2024 memcpy(guid+20, &stamp, 4);
5f8097be 2025}
59e36268 2026
fb9d0acb 2027static unsigned int find_unused_vde(const struct ddf_super *ddf)
2028{
2029 unsigned int i;
2030 for (i = 0; i < __be16_to_cpu(ddf->virt->max_vdes); i++) {
2031 if (all_ff(ddf->virt->entries[i].guid))
2032 return i;
2033 }
2034 return DDF_NOTFOUND;
2035}
2036
2037static unsigned int find_vde_by_name(const struct ddf_super *ddf,
2038 const char *name)
2039{
2040 unsigned int i;
2041 if (name == NULL)
2042 return DDF_NOTFOUND;
2043 for (i = 0; i < __be16_to_cpu(ddf->virt->max_vdes); i++) {
2044 if (all_ff(ddf->virt->entries[i].guid))
2045 continue;
2046 if (!strncmp(name, ddf->virt->entries[i].name,
2047 sizeof(ddf->virt->entries[i].name)))
2048 return i;
2049 }
2050 return DDF_NOTFOUND;
2051}
2052
2053static unsigned int find_vde_by_guid(const struct ddf_super *ddf,
2054 const char *guid)
2055{
2056 unsigned int i;
2057 if (guid == NULL || all_ff(guid))
2058 return DDF_NOTFOUND;
2059 for (i = 0; i < __be16_to_cpu(ddf->virt->max_vdes); i++)
2060 if (!memcmp(ddf->virt->entries[i].guid, guid, DDF_GUID_LEN))
2061 return i;
2062 return DDF_NOTFOUND;
2063}
2064
78e44928
NB		 2065static int init_super_ddf_bvd(struct supertype *st,
2066 mdu_array_info_t *info,
2067 unsigned long long size,
2068 char *name, char *homehost,
83cd1e97 2069 int *uuid, unsigned long long data_offset);
78e44928 2070
a322f70c
DW		 2071static int init_super_ddf(struct supertype *st,
2072 mdu_array_info_t *info,
2073 unsigned long long size, char *name, char *homehost,
83cd1e97 2074 int *uuid, unsigned long long data_offset)
a322f70c
DW		 2075{
2076 /* This is primarily called by Create when creating a new array.
2077 * We will then get add_to_super called for each component, and then
2078 * write_init_super called to write it out to each device.
2079 * For DDF, Create can create on fresh devices or on a pre-existing
2080 * array.
2081 * To create on a pre-existing array a different method will be called.
2082 * This one is just for fresh drives.
2083 *
2084 * We need to create the entire 'ddf' structure which includes:
2085 * DDF headers - these are easy.
2086 * Controller data - a Sector describing this controller .. not that
2087 * this is a controller exactly.
2088 * Physical Disk Record - one entry per device, so
2089 * leave plenty of space.
2090 * Virtual Disk Records - again, just leave plenty of space.
2091 * This just lists VDs, doesn't give details
2092 * Config records - describes the VDs that use this disk
2093 * DiskData - describes 'this' device.
2094 * BadBlockManagement - empty
2095 * Diag Space - empty
2096 * Vendor Logs - Could we put bitmaps here?
2097 *
2098 */
2099 struct ddf_super *ddf;
2100 char hostname[17];
2101 int hostlen;
a322f70c
DW		 2102 int max_phys_disks, max_virt_disks;
2103 unsigned long long sector;
2104 int clen;
2105 int i;
2106 int pdsize, vdsize;
2107 struct phys_disk *pd;
2108 struct virtual_disk *vd;
2109
83cd1e97 2110 if (data_offset != INVALID_SECTORS) {
ed503f89 2111 pr_err("data-offset not supported by DDF\n");
83cd1e97
N		 2112 return 0;
2113 }
2114
78e44928 2115 if (st->sb)
83cd1e97
N		 2116 return init_super_ddf_bvd(st, info, size, name, homehost, uuid,
2117 data_offset);
ba7eb04f 2118
3d2c4fc7 2119 if (posix_memalign((void**)&ddf, 512, sizeof(*ddf)) != 0) {
e7b84f9d 2120 pr_err("%s could not allocate superblock\n", __func__);
3d2c4fc7
DW		 2121 return 0;
2122 }
6264b437 2123 memset(ddf, 0, sizeof(*ddf));
a322f70c
DW		 2124 ddf->dlist = NULL; /* no physical disks yet */
2125 ddf->conflist = NULL; /* No virtual disks yet */
955e9ea1
DW		 2126 st->sb = ddf;
2127
2128 if (info == NULL) {
2129 /* zeroing superblock */
2130 return 0;
2131 }
a322f70c
DW		 2132
2133 /* At least 32MB *must* be reserved for the ddf. So let's just
2134 * start 32MB from the end, and put the primary header there.
2135 * Don't do secondary for now.
2136 * We don't know exactly where that will be yet as it could be
2137 * different on each device. To just set up the lengths.
2138 *
2139 */
2140
2141 ddf->anchor.magic = DDF_HEADER_MAGIC;
5f8097be 2142 make_header_guid(ddf->anchor.guid);
a322f70c 2143
59e36268 2144 memcpy(ddf->anchor.revision, DDF_REVISION_2, 8);
a322f70c
DW		 2145 ddf->anchor.seq = __cpu_to_be32(1);
2146 ddf->anchor.timestamp = __cpu_to_be32(time(0) - DECADE);
2147 ddf->anchor.openflag = 0xFF;
2148 ddf->anchor.foreignflag = 0;
2149 ddf->anchor.enforcegroups = 0; /* Is this best?? */
2150 ddf->anchor.pad0 = 0xff;
2151 memset(ddf->anchor.pad1, 0xff, 12);
2152 memset(ddf->anchor.header_ext, 0xff, 32);
2153 ddf->anchor.primary_lba = ~(__u64)0;
2154 ddf->anchor.secondary_lba = ~(__u64)0;
2155 ddf->anchor.type = DDF_HEADER_ANCHOR;
2156 memset(ddf->anchor.pad2, 0xff, 3);
2157 ddf->anchor.workspace_len = __cpu_to_be32(32768); /* Must be reserved */
2158 ddf->anchor.workspace_lba = ~(__u64)0; /* Put this at bottom
2159 of 32M reserved.. */
2160 max_phys_disks = 1023; /* Should be enough */
2161 ddf->anchor.max_pd_entries = __cpu_to_be16(max_phys_disks);
2162 max_virt_disks = 255;
2163 ddf->anchor.max_vd_entries = __cpu_to_be16(max_virt_disks); /* ?? */
2164 ddf->anchor.max_partitions = __cpu_to_be16(64); /* ?? */
2165 ddf->max_part = 64;
8c3b8c2c 2166 ddf->mppe = 256;
59e36268
NB		 2167 ddf->conf_rec_len = 1 + ROUND_UP(ddf->mppe * (4+8), 512)/512;
2168 ddf->anchor.config_record_len = __cpu_to_be16(ddf->conf_rec_len);
2169 ddf->anchor.max_primary_element_entries = __cpu_to_be16(ddf->mppe);
a322f70c 2170 memset(ddf->anchor.pad3, 0xff, 54);
a322f70c
DW		 2171 /* controller sections is one sector long immediately
2172 * after the ddf header */
2173 sector = 1;
2174 ddf->anchor.controller_section_offset = __cpu_to_be32(sector);
2175 ddf->anchor.controller_section_length = __cpu_to_be32(1);
2176 sector += 1;
2177
2178 /* phys is 8 sectors after that */
2179 pdsize = ROUND_UP(sizeof(struct phys_disk) +
2180 sizeof(struct phys_disk_entry)*max_phys_disks,
2181 512);
2182 switch(pdsize/512) {
2183 case 2: case 8: case 32: case 128: case 512: break;
2184 default: abort();
2185 }
2186 ddf->anchor.phys_section_offset = __cpu_to_be32(sector);
2187 ddf->anchor.phys_section_length =
2188 __cpu_to_be32(pdsize/512); /* max_primary_element_entries/8 */
2189 sector += pdsize/512;
2190
2191 /* virt is another 32 sectors */
2192 vdsize = ROUND_UP(sizeof(struct virtual_disk) +
2193 sizeof(struct virtual_entry) * max_virt_disks,
2194 512);
2195 switch(vdsize/512) {
2196 case 2: case 8: case 32: case 128: case 512: break;
2197 default: abort();
2198 }
2199 ddf->anchor.virt_section_offset = __cpu_to_be32(sector);
2200 ddf->anchor.virt_section_length =
2201 __cpu_to_be32(vdsize/512); /* max_vd_entries/8 */
2202 sector += vdsize/512;
2203
59e36268 2204 clen = ddf->conf_rec_len * (ddf->max_part+1);
a322f70c
DW		 2205 ddf->anchor.config_section_offset = __cpu_to_be32(sector);
2206 ddf->anchor.config_section_length = __cpu_to_be32(clen);
2207 sector += clen;
2208
2209 ddf->anchor.data_section_offset = __cpu_to_be32(sector);
2210 ddf->anchor.data_section_length = __cpu_to_be32(1);
2211 sector += 1;
2212
2213 ddf->anchor.bbm_section_length = __cpu_to_be32(0);
2214 ddf->anchor.bbm_section_offset = __cpu_to_be32(0xFFFFFFFF);
2215 ddf->anchor.diag_space_length = __cpu_to_be32(0);
2216 ddf->anchor.diag_space_offset = __cpu_to_be32(0xFFFFFFFF);
2217 ddf->anchor.vendor_length = __cpu_to_be32(0);
2218 ddf->anchor.vendor_offset = __cpu_to_be32(0xFFFFFFFF);
2219
2220 memset(ddf->anchor.pad4, 0xff, 256);
2221
2222 memcpy(&ddf->primary, &ddf->anchor, 512);
2223 memcpy(&ddf->secondary, &ddf->anchor, 512);
2224
2225 ddf->primary.openflag = 1; /* I guess.. */
2226 ddf->primary.type = DDF_HEADER_PRIMARY;
2227
2228 ddf->secondary.openflag = 1; /* I guess.. */
2229 ddf->secondary.type = DDF_HEADER_SECONDARY;
2230
2231 ddf->active = &ddf->primary;
2232
2233 ddf->controller.magic = DDF_CONTROLLER_MAGIC;
2234
2235 /* 24 more bytes of fiction required.
2236 * first 8 are a 'vendor-id' - "Linux-MD"
2237 * Remaining 16 are serial number.... maybe a hostname would do?
2238 */
2239 memcpy(ddf->controller.guid, T10, sizeof(T10));
1ba6bff9
DW		 2240 gethostname(hostname, sizeof(hostname));
2241 hostname[sizeof(hostname) - 1] = 0;
a322f70c
DW		 2242 hostlen = strlen(hostname);
2243 memcpy(ddf->controller.guid + 24 - hostlen, hostname, hostlen);
2244 for (i = strlen(T10) ; i+hostlen < 24; i++)
2245 ddf->controller.guid[i] = ' ';
2246
2247 ddf->controller.type.vendor_id = __cpu_to_be16(0xDEAD);
2248 ddf->controller.type.device_id = __cpu_to_be16(0xBEEF);
2249 ddf->controller.type.sub_vendor_id = 0;
2250 ddf->controller.type.sub_device_id = 0;
2251 memcpy(ddf->controller.product_id, "What Is My PID??", 16);
2252 memset(ddf->controller.pad, 0xff, 8);
2253 memset(ddf->controller.vendor_data, 0xff, 448);
a9e1c11d
N		 2254 if (homehost && strlen(homehost) < 440)
2255 strcpy((char*)ddf->controller.vendor_data, homehost);
a322f70c 2256
3d2c4fc7 2257 if (posix_memalign((void**)&pd, 512, pdsize) != 0) {
e7b84f9d 2258 pr_err("%s could not allocate pd\n", __func__);
3d2c4fc7
DW		 2259 return 0;
2260 }
6416d527 2261 ddf->phys = pd;
a322f70c
DW		 2262 ddf->pdsize = pdsize;
2263
2264 memset(pd, 0xff, pdsize);
2265 memset(pd, 0, sizeof(*pd));
076515ba 2266 pd->magic = DDF_PHYS_RECORDS_MAGIC;
a322f70c
DW		 2267 pd->used_pdes = __cpu_to_be16(0);
2268 pd->max_pdes = __cpu_to_be16(max_phys_disks);
2269 memset(pd->pad, 0xff, 52);
4a3ca8ac 2270 for (i = 0; i < max_phys_disks; i++)
2271 memset(pd->entries[i].guid, 0xff, DDF_GUID_LEN);
a322f70c 2272
3d2c4fc7 2273 if (posix_memalign((void**)&vd, 512, vdsize) != 0) {
e7b84f9d 2274 pr_err("%s could not allocate vd\n", __func__);
3d2c4fc7
DW		 2275 return 0;
2276 }
6416d527 2277 ddf->virt = vd;
a322f70c
DW		 2278 ddf->vdsize = vdsize;
2279 memset(vd, 0, vdsize);
2280 vd->magic = DDF_VIRT_RECORDS_MAGIC;
2281 vd->populated_vdes = __cpu_to_be16(0);
2282 vd->max_vdes = __cpu_to_be16(max_virt_disks);
2283 memset(vd->pad, 0xff, 52);
2284
5f8097be
NB		 2285 for (i=0; i<max_virt_disks; i++)
2286 memset(&vd->entries[i], 0xff, sizeof(struct virtual_entry));
2287
a322f70c 2288 st->sb = ddf;
7d5a7ff3 2289 ddf_set_updates_pending(ddf);
a322f70c
DW		 2290 return 1;
2291}
2292
5f8097be
NB		 2293static int chunk_to_shift(int chunksize)
2294{
2295 return ffs(chunksize/512)-1;
2296}
2297
0e600426 2298#ifndef MDASSEMBLE
59e36268
NB		 2299struct extent {
2300 unsigned long long start, size;
2301};
78e44928 2302static int cmp_extent(const void *av, const void *bv)
59e36268
NB		 2303{
2304 const struct extent *a = av;
2305 const struct extent *b = bv;
2306 if (a->start < b->start)
2307 return -1;
2308 if (a->start > b->start)
2309 return 1;
2310 return 0;
2311}
2312
78e44928 2313static struct extent *get_extents(struct ddf_super *ddf, struct dl *dl)
59e36268
NB		 2314{
2315 /* find a list of used extents on the give physical device
2316 * (dnum) of the given ddf.
2317 * Return a malloced array of 'struct extent'
2318
613b0d17 2319 * FIXME ignore DDF_Legacy devices?
59e36268
NB		 2320
2321 */
2322 struct extent *rv;
2323 int n = 0;
fcc22180 2324 unsigned int i;
59e36268 2325
503975b9 2326 rv = xmalloc(sizeof(struct extent) * (ddf->max_part + 2));
59e36268
NB		 2327
2328 for (i = 0; i < ddf->max_part; i++) {
fcc22180 2329 const struct vd_config *bvd;
2330 unsigned int ibvd;
59e36268 2331 struct vcl *v = dl->vlist[i];
fcc22180 2332 if (v == NULL ||
2333 get_pd_index_from_refnum(v, dl->disk.refnum, ddf->mppe,
2334 &bvd, &ibvd) == DDF_NOTFOUND)
59e36268 2335 continue;
fcc22180 2336 rv[n].start = __be64_to_cpu(LBA_OFFSET(ddf, bvd)[ibvd]);
2337 rv[n].size = __be64_to_cpu(bvd->blocks);
2338 n++;
59e36268
NB		 2339 }
2340 qsort(rv, n, sizeof(*rv), cmp_extent);
2341
2342 rv[n].start = __be64_to_cpu(ddf->phys->entries[dl->pdnum].config_size);
2343 rv[n].size = 0;
2344 return rv;
2345}
0e600426 2346#endif
59e36268 2347
5f8097be
NB		 2348static int init_super_ddf_bvd(struct supertype *st,
2349 mdu_array_info_t *info,
2350 unsigned long long size,
2351 char *name, char *homehost,
83cd1e97 2352 int *uuid, unsigned long long data_offset)
5f8097be
NB		 2353{
2354 /* We are creating a BVD inside a pre-existing container.
2355 * so st->sb is already set.
2356 * We need to create a new vd_config and a new virtual_entry
2357 */
2358 struct ddf_super *ddf = st->sb;
5aaf6c7b 2359 unsigned int venum, i;
5f8097be
NB		 2360 struct virtual_entry *ve;
2361 struct vcl *vcl;
2362 struct vd_config *vc;
5f8097be 2363
fb9d0acb 2364 if (find_vde_by_name(ddf, name) != DDF_NOTFOUND) {
2365 pr_err("This ddf already has an array called %s\n", name);
5f8097be
NB		 2366 return 0;
2367 }
fb9d0acb 2368 venum = find_unused_vde(ddf);
2369 if (venum == DDF_NOTFOUND) {
2370 pr_err("Cannot find spare slot for virtual disk\n");
5f8097be
NB		 2371 return 0;
2372 }
2373 ve = &ddf->virt->entries[venum];
2374
2375 /* A Virtual Disk GUID contains the T10 Vendor ID, controller type,
2376 * timestamp, random number
2377 */
2378 make_header_guid(ve->guid);
2379 ve->unit = __cpu_to_be16(info->md_minor);
2380 ve->pad0 = 0xFFFF;
2381 ve->guid_crc = crc32(0, (unsigned char*)ddf->anchor.guid, DDF_GUID_LEN);
2382 ve->type = 0;
7a7cc504
NB		 2383 ve->state = DDF_state_degraded; /* Will be modified as devices are added */
2384 if (info->state & 1) /* clean */
2385 ve->init_state = DDF_init_full;
2386 else
2387 ve->init_state = DDF_init_not;
2388
5f8097be
NB		 2389 memset(ve->pad1, 0xff, 14);
2390 memset(ve->name, ' ', 16);
2391 if (name)
2392 strncpy(ve->name, name, 16);
2393 ddf->virt->populated_vdes =
2394 __cpu_to_be16(__be16_to_cpu(ddf->virt->populated_vdes)+1);
2395
2396 /* Now create a new vd_config */
3d2c4fc7
DW		 2397 if (posix_memalign((void**)&vcl, 512,
2398 (offsetof(struct vcl, conf) + ddf->conf_rec_len * 512)) != 0) {
e7b84f9d 2399 pr_err("%s could not allocate vd_config\n", __func__);
3d2c4fc7
DW		 2400 return 0;
2401 }
59e36268
NB		 2402 vcl->vcnum = venum;
2403 vcl->block_sizes = NULL; /* FIXME not for CONCAT */
5f8097be
NB		 2404 vc = &vcl->conf;
2405
2406 vc->magic = DDF_VD_CONF_MAGIC;
2407 memcpy(vc->guid, ve->guid, DDF_GUID_LEN);
2408 vc->timestamp = __cpu_to_be32(time(0)-DECADE);
2409 vc->seqnum = __cpu_to_be32(1);
2410 memset(vc->pad0, 0xff, 24);
5f8097be 2411 vc->chunk_shift = chunk_to_shift(info->chunk_size);
a3163bf0 2412 if (layout_md2ddf(info, vc) == -1 ||
2413 __be16_to_cpu(vc->prim_elmnt_count) > ddf->mppe) {
2414 pr_err("%s: unsupported RAID level/layout %d/%d with %d disks\n",
2415 __func__, info->level, info->layout, info->raid_disks);
2416 free(vcl);
2417 return 0;
2418 }
5f8097be 2419 vc->sec_elmnt_seq = 0;
3c48f7be 2420 if (alloc_other_bvds(ddf, vcl) != 0) {
2421 pr_err("%s could not allocate other bvds\n",
2422 __func__);
2423 free(vcl);
2424 return 0;
2425 }
5f8097be
NB		 2426 vc->blocks = __cpu_to_be64(info->size * 2);
2427 vc->array_blocks = __cpu_to_be64(
2428 calc_array_size(info->level, info->raid_disks, info->layout,
2429 info->chunk_size, info->size*2));
2430 memset(vc->pad1, 0xff, 8);
2431 vc->spare_refs[0] = 0xffffffff;
2432 vc->spare_refs[1] = 0xffffffff;
2433 vc->spare_refs[2] = 0xffffffff;
2434 vc->spare_refs[3] = 0xffffffff;
2435 vc->spare_refs[4] = 0xffffffff;
2436 vc->spare_refs[5] = 0xffffffff;
2437 vc->spare_refs[6] = 0xffffffff;
2438 vc->spare_refs[7] = 0xffffffff;
2439 memset(vc->cache_pol, 0, 8);
2440 vc->bg_rate = 0x80;
2441 memset(vc->pad2, 0xff, 3);
2442 memset(vc->pad3, 0xff, 52);
2443 memset(vc->pad4, 0xff, 192);
2444 memset(vc->v0, 0xff, 32);
2445 memset(vc->v1, 0xff, 32);
2446 memset(vc->v2, 0xff, 16);
2447 memset(vc->v3, 0xff, 16);
2448 memset(vc->vendor, 0xff, 32);
598f0d58 2449
8c3b8c2c 2450 memset(vc->phys_refnum, 0xff, 4*ddf->mppe);
e5a2a3cf 2451 memset(vc->phys_refnum+ddf->mppe, 0x00, 8*ddf->mppe);
5f8097be 2452
5aaf6c7b 2453 for (i = 1; i < vc->sec_elmnt_count; i++) {
2454 memcpy(vcl->other_bvds[i-1], vc, ddf->conf_rec_len * 512);
2455 vcl->other_bvds[i-1]->sec_elmnt_seq = i;
2456 }
2457
5f8097be
NB		 2458 vcl->next = ddf->conflist;
2459 ddf->conflist = vcl;
d2ca6449 2460 ddf->currentconf = vcl;
7d5a7ff3 2461 ddf_set_updates_pending(ddf);
5f8097be
NB		 2462 return 1;
2463}
2464
63eb2454 2465static int get_svd_state(const struct ddf_super *, const struct vcl *);
2466
0e600426 2467#ifndef MDASSEMBLE
5f8097be
NB		 2468static void add_to_super_ddf_bvd(struct supertype *st,
2469 mdu_disk_info_t *dk, int fd, char *devname)
2470{
2471 /* fd and devname identify a device with-in the ddf container (st).
2472 * dk identifies a location in the new BVD.
2473 * We need to find suitable free space in that device and update
2474 * the phys_refnum and lba_offset for the newly created vd_config.
2475 * We might also want to update the type in the phys_disk
5575e7d9 2476 * section.
8592f29d
N		 2477 *
2478 * Alternately: fd == -1 and we have already chosen which device to
2479 * use and recorded in dlist->raid_disk;
5f8097be
NB		 2480 */
2481 struct dl *dl;
2482 struct ddf_super *ddf = st->sb;
2483 struct vd_config *vc;
f21e18ca 2484 unsigned int i;
59e36268
NB		 2485 unsigned long long blocks, pos, esize;
2486 struct extent *ex;
475ccbdb 2487 unsigned int raid_disk = dk->raid_disk;
5f8097be 2488
8592f29d
N		 2489 if (fd == -1) {
2490 for (dl = ddf->dlist; dl ; dl = dl->next)
2491 if (dl->raiddisk == dk->raid_disk)
2492 break;
2493 } else {
2494 for (dl = ddf->dlist; dl ; dl = dl->next)
2495 if (dl->major == dk->major &&
2496 dl->minor == dk->minor)
2497 break;
2498 }
5f8097be
NB		 2499 if (!dl || ! (dk->state & (1<<MD_DISK_SYNC)))
2500 return;
2501
d2ca6449 2502 vc = &ddf->currentconf->conf;
475ccbdb 2503 if (vc->sec_elmnt_count > 1) {
2504 unsigned int n = __be16_to_cpu(vc->prim_elmnt_count);
2505 if (raid_disk >= n)
2506 vc = ddf->currentconf->other_bvds[raid_disk / n - 1];
2507 raid_disk %= n;
2508 }
59e36268
NB		 2509
2510 ex = get_extents(ddf, dl);
2511 if (!ex)
2512 return;
2513
2514 i = 0; pos = 0;
2515 blocks = __be64_to_cpu(vc->blocks);
d2ca6449
NB		 2516 if (ddf->currentconf->block_sizes)
2517 blocks = ddf->currentconf->block_sizes[dk->raid_disk];
59e36268
NB		 2518
2519 do {
2520 esize = ex[i].start - pos;
2521 if (esize >= blocks)
2522 break;
2523 pos = ex[i].start + ex[i].size;
2524 i++;
2525 } while (ex[i-1].size);
2526
2527 free(ex);
2528 if (esize < blocks)
2529 return;
2530
d2ca6449 2531 ddf->currentdev = dk->raid_disk;
475ccbdb 2532 vc->phys_refnum[raid_disk] = dl->disk.refnum;
2533 LBA_OFFSET(ddf, vc)[raid_disk] = __cpu_to_be64(pos);
5f8097be 2534
f21e18ca 2535 for (i = 0; i < ddf->max_part ; i++)
5575e7d9
NB		 2536 if (dl->vlist[i] == NULL)
2537 break;
2538 if (i == ddf->max_part)
2539 return;
d2ca6449 2540 dl->vlist[i] = ddf->currentconf;
5f8097be 2541
8592f29d
N		 2542 if (fd >= 0)
2543 dl->fd = fd;
2544 if (devname)
2545 dl->devname = devname;
7a7cc504 2546
63eb2454 2547 /* Check if we can mark array as optimal yet */
d2ca6449 2548 i = ddf->currentconf->vcnum;
63eb2454 2549 ddf->virt->entries[i].state =
2550 (ddf->virt->entries[i].state & ~DDF_state_mask)
2551 | get_svd_state(ddf, ddf->currentconf);
5575e7d9
NB		 2552 ddf->phys->entries[dl->pdnum].type &= ~__cpu_to_be16(DDF_Global_Spare);
2553 ddf->phys->entries[dl->pdnum].type |= __cpu_to_be16(DDF_Active_in_VD);
7d5a7ff3 2554 ddf_set_updates_pending(ddf);
5f8097be
NB		 2555}
2556
4a3ca8ac 2557static unsigned int find_unused_pde(const struct ddf_super *ddf)
2558{
2559 unsigned int i;
2560 for (i = 0; i < __be16_to_cpu(ddf->phys->max_pdes); i++) {
2561 if (all_ff(ddf->phys->entries[i].guid))
2562 return i;
2563 }
2564 return DDF_NOTFOUND;
2565}
2566
a322f70c
DW		 2567/* add a device to a container, either while creating it or while
2568 * expanding a pre-existing container
2569 */
f20c3968 2570static int add_to_super_ddf(struct supertype *st,
72ca9bcf
N		 2571 mdu_disk_info_t *dk, int fd, char *devname,
2572 unsigned long long data_offset)
a322f70c
DW		 2573{
2574 struct ddf_super *ddf = st->sb;
2575 struct dl *dd;
2576 time_t now;
2577 struct tm *tm;
2578 unsigned long long size;
2579 struct phys_disk_entry *pde;
f21e18ca 2580 unsigned int n, i;
a322f70c 2581 struct stat stb;
90fa1a29 2582 __u32 *tptr;
a322f70c 2583
78e44928
NB		 2584 if (ddf->currentconf) {
2585 add_to_super_ddf_bvd(st, dk, fd, devname);
f20c3968 2586 return 0;
78e44928
NB		 2587 }
2588
a322f70c
DW		 2589 /* This is device numbered dk->number. We need to create
2590 * a phys_disk entry and a more detailed disk_data entry.
2591 */
2592 fstat(fd, &stb);
4a3ca8ac 2593 n = find_unused_pde(ddf);
2594 if (n == DDF_NOTFOUND) {
2595 pr_err("%s: No free slot in array, cannot add disk\n",
2596 __func__);
2597 return 1;
2598 }
2599 pde = &ddf->phys->entries[n];
4ee8cca9 2600 get_dev_size(fd, NULL, &size);
2601 if (size <= 32*1024*1024) {
2602 pr_err("%s: device size must be at least 32MB\n",
2603 __func__);
2604 return 1;
2605 }
2606 size >>= 9;
4a3ca8ac 2607
3d2c4fc7
DW		 2608 if (posix_memalign((void**)&dd, 512,
2609 sizeof(*dd) + sizeof(dd->vlist[0]) * ddf->max_part) != 0) {
e7b84f9d
N		 2610 pr_err("%s could allocate buffer for new disk, aborting\n",
2611 __func__);
f20c3968 2612 return 1;
3d2c4fc7 2613 }
a322f70c
DW		 2614 dd->major = major(stb.st_rdev);
2615 dd->minor = minor(stb.st_rdev);
2616 dd->devname = devname;
a322f70c 2617 dd->fd = fd;
b2280677 2618 dd->spare = NULL;
a322f70c
DW		 2619
2620 dd->disk.magic = DDF_PHYS_DATA_MAGIC;
2621 now = time(0);
2622 tm = localtime(&now);
2623 sprintf(dd->disk.guid, "%8s%04d%02d%02d",
2624 T10, tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday);
90fa1a29
JS		 2625 tptr = (__u32 *)(dd->disk.guid + 16);
2626 *tptr++ = random32();
2627 *tptr = random32();
a322f70c 2628
59e36268
NB		 2629 do {
2630 /* Cannot be bothered finding a CRC of some irrelevant details*/
bfb7ea78 2631 dd->disk.refnum = random32();
f21e18ca
N		 2632 for (i = __be16_to_cpu(ddf->active->max_pd_entries);
2633 i > 0; i--)
2634 if (ddf->phys->entries[i-1].refnum == dd->disk.refnum)
59e36268 2635 break;
f21e18ca 2636 } while (i > 0);
59e36268 2637
a322f70c
DW		 2638 dd->disk.forced_ref = 1;
2639 dd->disk.forced_guid = 1;
2640 memset(dd->disk.vendor, ' ', 32);
2641 memcpy(dd->disk.vendor, "Linux", 5);
2642 memset(dd->disk.pad, 0xff, 442);
b2280677 2643 for (i = 0; i < ddf->max_part ; i++)
a322f70c
DW		 2644 dd->vlist[i] = NULL;
2645
5575e7d9
NB		 2646 dd->pdnum = n;
2647
2cc2983d
N		 2648 if (st->update_tail) {
2649 int len = (sizeof(struct phys_disk) +
2650 sizeof(struct phys_disk_entry));
2651 struct phys_disk *pd;
2652
503975b9 2653 pd = xmalloc(len);
2cc2983d
N		 2654 pd->magic = DDF_PHYS_RECORDS_MAGIC;
2655 pd->used_pdes = __cpu_to_be16(n);
2656 pde = &pd->entries[0];
2657 dd->mdupdate = pd;
4a3ca8ac 2658 } else
2659 ddf->phys->used_pdes = __cpu_to_be16(
2660 1 + __be16_to_cpu(ddf->phys->used_pdes));
a322f70c
DW		 2661
2662 memcpy(pde->guid, dd->disk.guid, DDF_GUID_LEN);
2663 pde->refnum = dd->disk.refnum;
5575e7d9 2664 pde->type = __cpu_to_be16(DDF_Forced_PD_GUID | DDF_Global_Spare);
a322f70c 2665 pde->state = __cpu_to_be16(DDF_Online);
4ee8cca9 2666 dd->size = size;
2667 /*
2668 * If there is already a device in dlist, try to reserve the same
2669 * amount of workspace. Otherwise, use 32MB.
2670 * We checked disk size above already.
2671 */
2672#define __calc_lba(new, old, lba, mb) do { \
2673 unsigned long long dif; \
2674 if ((old) != NULL) \
2675 dif = (old)->size - __be64_to_cpu((old)->lba); \
2676 else \
2677 dif = (new)->size; \
2678 if ((new)->size > dif) \
2679 (new)->lba = __cpu_to_be64((new)->size - dif); \
2680 else \
2681 (new)->lba = __cpu_to_be64((new)->size - (mb*1024*2)); \
2682 } while (0)
2683 __calc_lba(dd, ddf->dlist, workspace_lba, 32);
2684 __calc_lba(dd, ddf->dlist, primary_lba, 16);
2685 __calc_lba(dd, ddf->dlist, secondary_lba, 32);
2686 pde->config_size = dd->workspace_lba;
2687
a322f70c
DW		 2688 sprintf(pde->path, "%17.17s","Information: nil") ;
2689 memset(pde->pad, 0xff, 6);
2690
2cc2983d
N		 2691 if (st->update_tail) {
2692 dd->next = ddf->add_list;
2693 ddf->add_list = dd;
2694 } else {
2695 dd->next = ddf->dlist;
2696 ddf->dlist = dd;
7d5a7ff3 2697 ddf_set_updates_pending(ddf);
2cc2983d 2698 }
f20c3968
DW		 2699
2700 return 0;
a322f70c
DW		 2701}
2702
4dd968cc
N		 2703static int remove_from_super_ddf(struct supertype *st, mdu_disk_info_t *dk)
2704{
2705 struct ddf_super *ddf = st->sb;
2706 struct dl *dl;
2707
2708 /* mdmon has noticed that this disk (dk->major/dk->minor) has
2709 * disappeared from the container.
2710 * We need to arrange that it disappears from the metadata and
2711 * internal data structures too.
2712 * Most of the work is done by ddf_process_update which edits
2713 * the metadata and closes the file handle and attaches the memory
2714 * where free_updates will free it.
2715 */
2716 for (dl = ddf->dlist; dl ; dl = dl->next)
2717 if (dl->major == dk->major &&
2718 dl->minor == dk->minor)
2719 break;
2720 if (!dl)
2721 return -1;
2722
2723 if (st->update_tail) {
2724 int len = (sizeof(struct phys_disk) +
2725 sizeof(struct phys_disk_entry));
2726 struct phys_disk *pd;
2727
503975b9 2728 pd = xmalloc(len);
4dd968cc
N		 2729 pd->magic = DDF_PHYS_RECORDS_MAGIC;
2730 pd->used_pdes = __cpu_to_be16(dl->pdnum);
2731 pd->entries[0].state = __cpu_to_be16(DDF_Missing);
2732 append_metadata_update(st, pd, len);
2733 }
2734 return 0;
2735}
2736
a322f70c
DW		 2737/*
2738 * This is the write_init_super method for a ddf container. It is
2739 * called when creating a container or adding another device to a
2740 * container.
2741 */
42d5dfd9 2742#define NULL_CONF_SZ 4096
18a2f463 2743
7f798aca 2744static int __write_ddf_structure(struct dl *d, struct ddf_super *ddf, __u8 type,
2745 char *null_aligned)
a322f70c 2746{
7f798aca 2747 unsigned long long sector;
2748 struct ddf_header *header;
2749 int fd, i, n_config, conf_size;
a4057a88 2750 int ret = 0;
7f798aca 2751
2752 fd = d->fd;
2753
2754 switch (type) {
2755 case DDF_HEADER_PRIMARY:
2756 header = &ddf->primary;
2757 sector = __be64_to_cpu(header->primary_lba);
2758 break;
2759 case DDF_HEADER_SECONDARY:
2760 header = &ddf->secondary;
2761 sector = __be64_to_cpu(header->secondary_lba);
2762 break;
2763 default:
2764 return 0;
2765 }
2766
2767 header->type = type;
a4057a88 2768 header->openflag = 1;
7f798aca 2769 header->crc = calc_crc(header, 512);
2770
2771 lseek64(fd, sector<<9, 0);
2772 if (write(fd, header, 512) < 0)
a4057a88 2773 goto out;
7f798aca 2774
2775 ddf->controller.crc = calc_crc(&ddf->controller, 512);
2776 if (write(fd, &ddf->controller, 512) < 0)
a4057a88 2777 goto out;
a322f70c 2778
7f798aca 2779 ddf->phys->crc = calc_crc(ddf->phys, ddf->pdsize);
2780 if (write(fd, ddf->phys, ddf->pdsize) < 0)
a4057a88 2781 goto out;
7f798aca 2782 ddf->virt->crc = calc_crc(ddf->virt, ddf->vdsize);
2783 if (write(fd, ddf->virt, ddf->vdsize) < 0)
a4057a88 2784 goto out;
7f798aca 2785
2786 /* Now write lots of config records. */
2787 n_config = ddf->max_part;
2788 conf_size = ddf->conf_rec_len * 512;
2789 for (i = 0 ; i <= n_config ; i++) {
e3c2a365 2790 struct vcl *c;
2791 struct vd_config *vdc = NULL;
2792 if (i == n_config) {
7f798aca 2793 c = (struct vcl *)d->spare;
e3c2a365 2794 if (c)
2795 vdc = &c->conf;
2796 } else {
2797 unsigned int dummy;
2798 c = d->vlist[i];
2799 if (c)
2800 get_pd_index_from_refnum(
2801 c, d->disk.refnum,
2802 ddf->mppe,
2803 (const struct vd_config **)&vdc,
2804 &dummy);
2805 }
7f798aca 2806 if (c) {
be9b9ef4 2807 dprintf("writing conf record %i on disk %08x for %s/%u\n",
2808 i, d->disk.refnum, guid_str(vdc->guid),
2809 vdc->sec_elmnt_seq);
dacf3dc5 2810 vdc->seqnum = header->seq;
e3c2a365 2811 vdc->crc = calc_crc(vdc, conf_size);
2812 if (write(fd, vdc, conf_size) < 0)
7f798aca 2813 break;
2814 } else {
2815 unsigned int togo = conf_size;
2816 while (togo > NULL_CONF_SZ) {
2817 if (write(fd, null_aligned, NULL_CONF_SZ) < 0)
2818 break;
2819 togo -= NULL_CONF_SZ;
2820 }
2821 if (write(fd, null_aligned, togo) < 0)
2822 break;
2823 }
2824 }
2825 if (i <= n_config)
a4057a88 2826 goto out;
7f798aca 2827
2828 d->disk.crc = calc_crc(&d->disk, 512);
2829 if (write(fd, &d->disk, 512) < 0)
a4057a88 2830 goto out;
7f798aca 2831
a4057a88 2832 ret = 1;
2833out:
2834 header->openflag = 0;
2835 header->crc = calc_crc(header, 512);
2836
2837 lseek64(fd, sector<<9, 0);
2838 if (write(fd, header, 512) < 0)
2839 ret = 0;
2840
2841 return ret;
7f798aca 2842}
2843
2844static int __write_init_super_ddf(struct supertype *st)
2845{
a322f70c 2846 struct ddf_super *ddf = st->sb;
a322f70c 2847 struct dl *d;
175593bf
DW		 2848 int attempts = 0;
2849 int successes = 0;
7f798aca 2850 unsigned long long size;
42d5dfd9 2851 char *null_aligned;
0175cbf6 2852 __u32 seq;
42d5dfd9 2853
7d5a7ff3 2854 pr_state(ddf, __func__);
42d5dfd9
JS		 2855 if (posix_memalign((void**)&null_aligned, 4096, NULL_CONF_SZ) != 0) {
2856 return -ENOMEM;
2857 }
2858 memset(null_aligned, 0xff, NULL_CONF_SZ);
a322f70c 2859
dc9e279c 2860 seq = ddf->active->seq + 1;
0175cbf6 2861
175593bf
DW		 2862 /* try to write updated metadata,
2863 * if we catch a failure move on to the next disk
2864 */
a322f70c
DW		 2865 for (d = ddf->dlist; d; d=d->next) {
2866 int fd = d->fd;
2867
2868 if (fd < 0)
2869 continue;
2870
175593bf 2871 attempts++;
a322f70c
DW		 2872 /* We need to fill in the primary, (secondary) and workspace
2873 * lba's in the headers, set their checksums,
2874 * Also checksum phys, virt....
2875 *
2876 * Then write everything out, finally the anchor is written.
2877 */
2878 get_dev_size(fd, NULL, &size);
2879 size /= 512;
097bcf00 2880 if (d->workspace_lba != 0)
2881 ddf->anchor.workspace_lba = d->workspace_lba;
2882 else
2883 ddf->anchor.workspace_lba =
2884 __cpu_to_be64(size - 32*1024*2);
2885 if (d->primary_lba != 0)
2886 ddf->anchor.primary_lba = d->primary_lba;
2887 else
2888 ddf->anchor.primary_lba =
2889 __cpu_to_be64(size - 16*1024*2);
2890 if (d->secondary_lba != 0)
2891 ddf->anchor.secondary_lba = d->secondary_lba;
2892 else
2893 ddf->anchor.secondary_lba =
2894 __cpu_to_be64(size - 32*1024*2);
0175cbf6 2895 ddf->anchor.seq = seq;
a322f70c
DW		 2896 memcpy(&ddf->primary, &ddf->anchor, 512);
2897 memcpy(&ddf->secondary, &ddf->anchor, 512);
2898
2899 ddf->anchor.openflag = 0xFF; /* 'open' means nothing */
2900 ddf->anchor.seq = 0xFFFFFFFF; /* no sequencing in anchor */
2901 ddf->anchor.crc = calc_crc(&ddf->anchor, 512);
2902
7f798aca 2903 if (!__write_ddf_structure(d, ddf, DDF_HEADER_PRIMARY,
2904 null_aligned))
175593bf 2905 continue;
a322f70c 2906
7f798aca 2907 if (!__write_ddf_structure(d, ddf, DDF_HEADER_SECONDARY,
2908 null_aligned))
175593bf 2909 continue;
a322f70c 2910
a322f70c 2911 lseek64(fd, (size-1)*512, SEEK_SET);
175593bf
DW		 2912 if (write(fd, &ddf->anchor, 512) < 0)
2913 continue;
2914 successes++;
2915 }
42d5dfd9 2916 free(null_aligned);
175593bf 2917
175593bf 2918 return attempts != successes;
a322f70c 2919}
7a7cc504
NB		 2920
2921static int write_init_super_ddf(struct supertype *st)
2922{
9b1fb677
DW		 2923 struct ddf_super *ddf = st->sb;
2924 struct vcl *currentconf = ddf->currentconf;
2925
2926 /* we are done with currentconf reset it to point st at the container */
2927 ddf->currentconf = NULL;
edd8d13c
NB		 2928
2929 if (st->update_tail) {
2930 /* queue the virtual_disk and vd_config as metadata updates */
2931 struct virtual_disk *vd;
2932 struct vd_config *vc;
edd8d13c
NB		 2933 int len;
2934
9b1fb677 2935 if (!currentconf) {
2cc2983d
N		 2936 int len = (sizeof(struct phys_disk) +
2937 sizeof(struct phys_disk_entry));
2938
2939 /* adding a disk to the container. */
2940 if (!ddf->add_list)
2941 return 0;
2942
2943 append_metadata_update(st, ddf->add_list->mdupdate, len);
2944 ddf->add_list->mdupdate = NULL;
2945 return 0;
2946 }
2947
2948 /* Newly created VD */
2949
edd8d13c
NB		 2950 /* First the virtual disk. We have a slightly fake header */
2951 len = sizeof(struct virtual_disk) + sizeof(struct virtual_entry);
503975b9 2952 vd = xmalloc(len);
edd8d13c 2953 *vd = *ddf->virt;
9b1fb677
DW		 2954 vd->entries[0] = ddf->virt->entries[currentconf->vcnum];
2955 vd->populated_vdes = __cpu_to_be16(currentconf->vcnum);
edd8d13c
NB		 2956 append_metadata_update(st, vd, len);
2957
2958 /* Then the vd_config */
2959 len = ddf->conf_rec_len * 512;
503975b9 2960 vc = xmalloc(len);
9b1fb677 2961 memcpy(vc, &currentconf->conf, len);
edd8d13c
NB		 2962 append_metadata_update(st, vc, len);
2963
2964 /* FIXME I need to close the fds! */
2965 return 0;
613b0d17 2966 } else {
d682f344 2967 struct dl *d;
19041058 2968 if (!currentconf)
2969 for (d = ddf->dlist; d; d=d->next)
2970 while (Kill(d->devname, NULL, 0, -1, 1) == 0);
1cc7f4fe 2971 return __write_init_super_ddf(st);
d682f344 2972 }
7a7cc504
NB		 2973}
2974
a322f70c
DW		 2975#endif
2976
387fcd59
N		 2977static __u64 avail_size_ddf(struct supertype *st, __u64 devsize,
2978 unsigned long long data_offset)
a322f70c
DW		 2979{
2980 /* We must reserve the last 32Meg */
2981 if (devsize <= 32*1024*2)
2982 return 0;
2983 return devsize - 32*1024*2;
2984}
2985
2986#ifndef MDASSEMBLE
8592f29d
N		 2987
2988static int reserve_space(struct supertype *st, int raiddisks,
2989 unsigned long long size, int chunk,
2990 unsigned long long *freesize)
2991{
2992 /* Find 'raiddisks' spare extents at least 'size' big (but
2993 * only caring about multiples of 'chunk') and remember
2994 * them.
2995 * If the cannot be found, fail.
2996 */
2997 struct dl *dl;
2998 struct ddf_super *ddf = st->sb;
2999 int cnt = 0;
3000
3001 for (dl = ddf->dlist; dl ; dl=dl->next) {
613b0d17 3002 dl->raiddisk = -1;
8592f29d
N		 3003 dl->esize = 0;
3004 }
3005 /* Now find largest extent on each device */
3006 for (dl = ddf->dlist ; dl ; dl=dl->next) {
3007 struct extent *e = get_extents(ddf, dl);
3008 unsigned long long pos = 0;
3009 int i = 0;
3010 int found = 0;
3011 unsigned long long minsize = size;
3012
3013 if (size == 0)
3014 minsize = chunk;
3015
3016 if (!e)
3017 continue;
3018 do {
3019 unsigned long long esize;
3020 esize = e[i].start - pos;
3021 if (esize >= minsize) {
3022 found = 1;
3023 minsize = esize;
3024 }
3025 pos = e[i].start + e[i].size;
3026 i++;
3027 } while (e[i-1].size);
3028 if (found) {
3029 cnt++;
3030 dl->esize = minsize;
3031 }
3032 free(e);
3033 }
3034 if (cnt < raiddisks) {
e7b84f9d 3035 pr_err("not enough devices with space to create array.\n");
8592f29d
N		 3036 return 0; /* No enough free spaces large enough */
3037 }
3038 if (size == 0) {
3039 /* choose the largest size of which there are at least 'raiddisk' */
3040 for (dl = ddf->dlist ; dl ; dl=dl->next) {
3041 struct dl *dl2;
3042 if (dl->esize <= size)
3043 continue;
3044 /* This is bigger than 'size', see if there are enough */
3045 cnt = 0;
7b80ad6a 3046 for (dl2 = ddf->dlist; dl2 ; dl2=dl2->next)
8592f29d
N		 3047 if (dl2->esize >= dl->esize)
3048 cnt++;
3049 if (cnt >= raiddisks)
3050 size = dl->esize;
3051 }
3052 if (chunk) {
3053 size = size / chunk;
3054 size *= chunk;
3055 }
3056 *freesize = size;
3057 if (size < 32) {
e7b84f9d 3058 pr_err("not enough spare devices to create array.\n");
8592f29d
N		 3059 return 0;
3060 }
3061 }
3062 /* We have a 'size' of which there are enough spaces.
3063 * We simply do a first-fit */
3064 cnt = 0;
3065 for (dl = ddf->dlist ; dl && cnt < raiddisks ; dl=dl->next) {
3066 if (dl->esize < size)
3067 continue;
613b0d17 3068
8592f29d
N		 3069 dl->raiddisk = cnt;
3070 cnt++;
3071 }
3072 return 1;
3073}
3074
2c514b71
NB		 3075static int
3076validate_geometry_ddf_container(struct supertype *st,
3077 int level, int layout, int raiddisks,
3078 int chunk, unsigned long long size,
af4348dd 3079 unsigned long long data_offset,
2c514b71
NB		 3080 char *dev, unsigned long long *freesize,
3081 int verbose);
78e44928
NB		 3082
3083static int validate_geometry_ddf_bvd(struct supertype *st,
3084 int level, int layout, int raiddisks,
c21e737b 3085 int *chunk, unsigned long long size,
af4348dd 3086 unsigned long long data_offset,
2c514b71
NB		 3087 char *dev, unsigned long long *freesize,
3088 int verbose);
78e44928
NB		 3089
3090static int validate_geometry_ddf(struct supertype *st,
2c514b71 3091 int level, int layout, int raiddisks,
c21e737b 3092 int *chunk, unsigned long long size,
af4348dd 3093 unsigned long long data_offset,
2c514b71
NB		 3094 char *dev, unsigned long long *freesize,
3095 int verbose)
a322f70c
DW		 3096{
3097 int fd;
3098 struct mdinfo *sra;
3099 int cfd;
3100
3101 /* ddf potentially supports lots of things, but it depends on
3102 * what devices are offered (and maybe kernel version?)
3103 * If given unused devices, we will make a container.
3104 * If given devices in a container, we will make a BVD.
3105 * If given BVDs, we make an SVD, changing all the GUIDs in the process.
3106 */
3107
bb7295f1
N		 3108 if (chunk && *chunk == UnSet)
3109 *chunk = DEFAULT_CHUNK;
3110
542ef4ec 3111 if (level == -1000000) level = LEVEL_CONTAINER;
a322f70c 3112 if (level == LEVEL_CONTAINER) {
78e44928
NB		 3113 /* Must be a fresh device to add to a container */
3114 return validate_geometry_ddf_container(st, level, layout,
c21e737b 3115 raiddisks, chunk?*chunk:0,
af4348dd
N		 3116 size, data_offset, dev,
3117 freesize,
2c514b71 3118 verbose);
5f8097be
NB		 3119 }
3120
78e44928 3121 if (!dev) {
a3163bf0 3122 mdu_array_info_t array = {
3123 .level = level, .layout = layout,
3124 .raid_disks = raiddisks
3125 };
3126 struct vd_config conf;
3127 if (layout_md2ddf(&array, &conf) == -1) {
b42f577a 3128 if (verbose)
94b08b7c 3129 pr_err("DDF does not support level %d /layout %d arrays with %d disks\n",
3130 level, layout, raiddisks);
78e44928 3131 return 0;
b42f577a 3132 }
78e44928 3133 /* Should check layout? etc */
8592f29d
N		 3134
3135 if (st->sb && freesize) {
3136 /* --create was given a container to create in.
3137 * So we need to check that there are enough
3138 * free spaces and return the amount of space.
3139 * We may as well remember which drives were
3140 * chosen so that add_to_super/getinfo_super
3141 * can return them.
3142 */
c21e737b 3143 return reserve_space(st, raiddisks, size, chunk?*chunk:0, freesize);
8592f29d 3144 }
a322f70c 3145 return 1;
78e44928 3146 }
a322f70c 3147
8592f29d
N		 3148 if (st->sb) {
3149 /* A container has already been opened, so we are
3150 * creating in there. Maybe a BVD, maybe an SVD.
3151 * Should make a distinction one day.
3152 */
3153 return validate_geometry_ddf_bvd(st, level, layout, raiddisks,
af4348dd
N		 3154 chunk, size, data_offset, dev,
3155 freesize,
8592f29d
N		 3156 verbose);
3157 }
78e44928
NB		 3158 /* This is the first device for the array.
3159 * If it is a container, we read it in and do automagic allocations,
3160 * no other devices should be given.
3161 * Otherwise it must be a member device of a container, and we
3162 * do manual allocation.
3163 * Later we should check for a BVD and make an SVD.
a322f70c 3164 */
a322f70c
DW		 3165 fd = open(dev, O_RDONLY|O_EXCL, 0);
3166 if (fd >= 0) {
4dd2df09 3167 sra = sysfs_read(fd, NULL, GET_VERSION);
a322f70c
DW		 3168 close(fd);
3169 if (sra && sra->array.major_version == -1 &&
78e44928
NB		 3170 strcmp(sra->text_version, "ddf") == 0) {
3171
3172 /* load super */
3173 /* find space for 'n' devices. */
3174 /* remember the devices */
3175 /* Somehow return the fact that we have enough */
a322f70c
DW		 3176 }
3177
2c514b71 3178 if (verbose)
e7b84f9d
N		 3179 pr_err("ddf: Cannot create this array "
3180 "on device %s - a container is required.\n",
3181 dev);
a322f70c
DW		 3182 return 0;
3183 }
3184 if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) {
2c514b71 3185 if (verbose)
e7b84f9d 3186 pr_err("ddf: Cannot open %s: %s\n",
613b0d17 3187 dev, strerror(errno));
a322f70c
DW		 3188 return 0;
3189 }
3190 /* Well, it is in use by someone, maybe a 'ddf' container. */
3191 cfd = open_container(fd);
3192 if (cfd < 0) {
3193 close(fd);
2c514b71 3194 if (verbose)
e7b84f9d 3195 pr_err("ddf: Cannot use %s: %s\n",
613b0d17 3196 dev, strerror(EBUSY));
a322f70c
DW		 3197 return 0;
3198 }
4dd2df09 3199 sra = sysfs_read(cfd, NULL, GET_VERSION);
a322f70c
DW		 3200 close(fd);
3201 if (sra && sra->array.major_version == -1 &&
3202 strcmp(sra->text_version, "ddf") == 0) {
3203 /* This is a member of a ddf container. Load the container
3204 * and try to create a bvd
3205 */
3206 struct ddf_super *ddf;
e1902a7b 3207 if (load_super_ddf_all(st, cfd, (void **)&ddf, NULL) == 0) {
5f8097be 3208 st->sb = ddf;
4dd2df09 3209 strcpy(st->container_devnm, fd2devnm(cfd));
a322f70c 3210 close(cfd);
78e44928 3211 return validate_geometry_ddf_bvd(st, level, layout,
a322f70c 3212 raiddisks, chunk, size,
af4348dd 3213 data_offset,
2c514b71
NB		 3214 dev, freesize,
3215 verbose);
a322f70c
DW		 3216 }
3217 close(cfd);
c42ec1ed
DW		 3218 } else /* device may belong to a different container */
3219 return 0;
3220
a322f70c
DW		 3221 return 1;
3222}
3223
2c514b71
NB		 3224static int
3225validate_geometry_ddf_container(struct supertype *st,
3226 int level, int layout, int raiddisks,
3227 int chunk, unsigned long long size,
af4348dd 3228 unsigned long long data_offset,
2c514b71
NB		 3229 char *dev, unsigned long long *freesize,
3230 int verbose)
a322f70c
DW		 3231{
3232 int fd;
3233 unsigned long long ldsize;
3234
3235 if (level != LEVEL_CONTAINER)
3236 return 0;
3237 if (!dev)
3238 return 1;
3239
3240 fd = open(dev, O_RDONLY|O_EXCL, 0);
3241 if (fd < 0) {
2c514b71 3242 if (verbose)
e7b84f9d 3243 pr_err("ddf: Cannot open %s: %s\n",
613b0d17 3244 dev, strerror(errno));
a322f70c
DW		 3245 return 0;
3246 }
3247 if (!get_dev_size(fd, dev, &ldsize)) {
3248 close(fd);
3249 return 0;
3250 }
3251 close(fd);
3252
387fcd59 3253 *freesize = avail_size_ddf(st, ldsize >> 9, INVALID_SECTORS);
ea17e7aa
N		 3254 if (*freesize == 0)
3255 return 0;
a322f70c
DW		 3256
3257 return 1;
3258}
3259
78e44928
NB		 3260static int validate_geometry_ddf_bvd(struct supertype *st,
3261 int level, int layout, int raiddisks,
c21e737b 3262 int *chunk, unsigned long long size,
af4348dd 3263 unsigned long long data_offset,
2c514b71
NB		 3264 char *dev, unsigned long long *freesize,
3265 int verbose)
a322f70c
DW		 3266{
3267 struct stat stb;
3268 struct ddf_super *ddf = st->sb;
3269 struct dl *dl;
5f8097be
NB		 3270 unsigned long long pos = 0;
3271 unsigned long long maxsize;
3272 struct extent *e;
3273 int i;
a322f70c 3274 /* ddf/bvd supports lots of things, but not containers */
b42f577a
N		 3275 if (level == LEVEL_CONTAINER) {
3276 if (verbose)
e7b84f9d 3277 pr_err("DDF cannot create a container within an container\n");
a322f70c 3278 return 0;
b42f577a 3279 }
a322f70c
DW		 3280 /* We must have the container info already read in. */
3281 if (!ddf)
3282 return 0;
3283
5f8097be
NB		 3284 if (!dev) {
3285 /* General test: make sure there is space for
3286 * 'raiddisks' device extents of size 'size'.
3287 */
3288 unsigned long long minsize = size;
3289 int dcnt = 0;
3290 if (minsize == 0)
3291 minsize = 8;
3292 for (dl = ddf->dlist; dl ; dl = dl->next)
3293 {
3294 int found = 0;
7e1432fb 3295 pos = 0;
5f8097be
NB		 3296
3297 i = 0;
3298 e = get_extents(ddf, dl);
3299 if (!e) continue;
3300 do {
3301 unsigned long long esize;
3302 esize = e[i].start - pos;
3303 if (esize >= minsize)
3304 found = 1;
3305 pos = e[i].start + e[i].size;
3306 i++;
3307 } while (e[i-1].size);
3308 if (found)
3309 dcnt++;
3310 free(e);
3311 }
3312 if (dcnt < raiddisks) {
2c514b71 3313 if (verbose)
e7b84f9d
N		 3314 pr_err("ddf: Not enough devices with "
3315 "space for this array (%d < %d)\n",
3316 dcnt, raiddisks);
5f8097be
NB		 3317 return 0;
3318 }
3319 return 1;
3320 }
a322f70c
DW		 3321 /* This device must be a member of the set */
3322 if (stat(dev, &stb) < 0)
3323 return 0;
3324 if ((S_IFMT & stb.st_mode) != S_IFBLK)
3325 return 0;
3326 for (dl = ddf->dlist ; dl ; dl = dl->next) {
f21e18ca
N		 3327 if (dl->major == (int)major(stb.st_rdev) &&
3328 dl->minor == (int)minor(stb.st_rdev))
a322f70c
DW		 3329 break;
3330 }
5f8097be 3331 if (!dl) {
2c514b71 3332 if (verbose)
e7b84f9d 3333 pr_err("ddf: %s is not in the "
613b0d17
N		 3334 "same DDF set\n",
3335 dev);
5f8097be
NB		 3336 return 0;
3337 }
3338 e = get_extents(ddf, dl);
3339 maxsize = 0;
3340 i = 0;
3341 if (e) do {
613b0d17
N		 3342 unsigned long long esize;
3343 esize = e[i].start - pos;
3344 if (esize >= maxsize)
3345 maxsize = esize;
3346 pos = e[i].start + e[i].size;
3347 i++;
3348 } while (e[i-1].size);
5f8097be 3349 *freesize = maxsize;
a322f70c
DW		 3350 // FIXME here I am
3351
3352 return 1;
3353}
59e36268 3354
a322f70c 3355static int load_super_ddf_all(struct supertype *st, int fd,
e1902a7b 3356 void **sbp, char *devname)
a322f70c
DW		 3357{
3358 struct mdinfo *sra;
3359 struct ddf_super *super;
3360 struct mdinfo *sd, *best = NULL;
3361 int bestseq = 0;
3362 int seq;
3363 char nm[20];
3364 int dfd;
3365
b526e52d 3366 sra = sysfs_read(fd, 0, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE);
a322f70c
DW		 3367 if (!sra)
3368 return 1;
3369 if (sra->array.major_version != -1 ||
3370 sra->array.minor_version != -2 ||
3371 strcmp(sra->text_version, "ddf") != 0)
3372 return 1;
3373
6416d527 3374 if (posix_memalign((void**)&super, 512, sizeof(*super)) != 0)
a322f70c 3375 return 1;
a2349791 3376 memset(super, 0, sizeof(*super));
a322f70c
DW		 3377
3378 /* first, try each device, and choose the best ddf */
3379 for (sd = sra->devs ; sd ; sd = sd->next) {
3380 int rv;
3381 sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor);
7a7cc504
NB		 3382 dfd = dev_open(nm, O_RDONLY);
3383 if (dfd < 0)
a322f70c
DW		 3384 return 2;
3385 rv = load_ddf_headers(dfd, super, NULL);
7a7cc504 3386 close(dfd);
a322f70c
DW		 3387 if (rv == 0) {
3388 seq = __be32_to_cpu(super->active->seq);
3389 if (super->active->openflag)
3390 seq--;
3391 if (!best || seq > bestseq) {
3392 bestseq = seq;
3393 best = sd;
3394 }
3395 }
3396 }
3397 if (!best)
3398 return 1;
3399 /* OK, load this ddf */
3400 sprintf(nm, "%d:%d", best->disk.major, best->disk.minor);
3401 dfd = dev_open(nm, O_RDONLY);
7a7cc504 3402 if (dfd < 0)
a322f70c
DW		 3403 return 1;
3404 load_ddf_headers(dfd, super, NULL);
3405 load_ddf_global(dfd, super, NULL);
3406 close(dfd);
3407 /* Now we need the device-local bits */
3408 for (sd = sra->devs ; sd ; sd = sd->next) {
3d2c4fc7
DW		 3409 int rv;
3410
a322f70c 3411 sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor);
e1902a7b 3412 dfd = dev_open(nm, O_RDWR);
7a7cc504 3413 if (dfd < 0)
a322f70c 3414 return 2;
3d2c4fc7
DW		 3415 rv = load_ddf_headers(dfd, super, NULL);
3416 if (rv == 0)
e1902a7b 3417 rv = load_ddf_local(dfd, super, NULL, 1);
3d2c4fc7
DW		 3418 if (rv)
3419 return 1;
a322f70c 3420 }
33414a01 3421
a322f70c
DW		 3422 *sbp = super;
3423 if (st->ss == NULL) {
78e44928 3424 st->ss = &super_ddf;
a322f70c
DW		 3425 st->minor_version = 0;
3426 st->max_devs = 512;
3427 }
4dd2df09 3428 strcpy(st->container_devnm, fd2devnm(fd));
a322f70c
DW		 3429 return 0;
3430}
2b959fbf
N		 3431
3432static int load_container_ddf(struct supertype *st, int fd,
3433 char *devname)
3434{
3435 return load_super_ddf_all(st, fd, &st->sb, devname);
3436}
3437
0e600426 3438#endif /* MDASSEMBLE */
a322f70c 3439
a5c7adb3 3440static int check_secondary(const struct vcl *vc)
3441{
3442 const struct vd_config *conf = &vc->conf;
3443 int i;
3444
3445 /* The only DDF secondary RAID level md can support is
3446 * RAID 10, if the stripe sizes and Basic volume sizes
3447 * are all equal.
3448 * Other configurations could in theory be supported by exposing
3449 * the BVDs to user space and using device mapper for the secondary
3450 * mapping. So far we don't support that.
3451 */
3452
3453 __u64 sec_elements[4] = {0, 0, 0, 0};
3454#define __set_sec_seen(n) (sec_elements[(n)>>6] |= (1<<((n)&63)))
3455#define __was_sec_seen(n) ((sec_elements[(n)>>6] & (1<<((n)&63))) != 0)
3456
3457 if (vc->other_bvds == NULL) {
3458 pr_err("No BVDs for secondary RAID found\n");
3459 return -1;
3460 }
3461 if (conf->prl != DDF_RAID1) {
3462 pr_err("Secondary RAID level only supported for mirrored BVD\n");
3463 return -1;
3464 }
3465 if (conf->srl != DDF_2STRIPED && conf->srl != DDF_2SPANNED) {
3466 pr_err("Secondary RAID level %d is unsupported\n",
3467 conf->srl);
3468 return -1;
3469 }
3470 __set_sec_seen(conf->sec_elmnt_seq);
3471 for (i = 0; i < conf->sec_elmnt_count-1; i++) {
3472 const struct vd_config *bvd = vc->other_bvds[i];
3c48f7be 3473 if (bvd->sec_elmnt_seq == DDF_UNUSED_BVD)
c98567ba 3474 continue;
a5c7adb3 3475 if (bvd->srl != conf->srl) {
3476 pr_err("Inconsistent secondary RAID level across BVDs\n");
3477 return -1;
3478 }
3479 if (bvd->prl != conf->prl) {
3480 pr_err("Different RAID levels for BVDs are unsupported\n");
3481 return -1;
3482 }
3483 if (bvd->prim_elmnt_count != conf->prim_elmnt_count) {
3484 pr_err("All BVDs must have the same number of primary elements\n");
3485 return -1;
3486 }
3487 if (bvd->chunk_shift != conf->chunk_shift) {
3488 pr_err("Different strip sizes for BVDs are unsupported\n");
3489 return -1;
3490 }
3491 if (bvd->array_blocks != conf->array_blocks) {
3492 pr_err("Different BVD sizes are unsupported\n");
3493 return -1;
3494 }
3495 __set_sec_seen(bvd->sec_elmnt_seq);
3496 }
3497 for (i = 0; i < conf->sec_elmnt_count; i++) {
3498 if (!__was_sec_seen(i)) {
3499 pr_err("BVD %d is missing\n", i);
3500 return -1;
3501 }
3502 }
3503 return 0;
3504}
3505
8a38db86 3506static unsigned int get_pd_index_from_refnum(const struct vcl *vc,
4e587018 3507 __u32 refnum, unsigned int nmax,
3508 const struct vd_config **bvd,
3509 unsigned int *idx)
8a38db86 3510{
4e587018 3511 unsigned int i, j, n, sec, cnt;
3512
3513 cnt = __be16_to_cpu(vc->conf.prim_elmnt_count);
3514 sec = (vc->conf.sec_elmnt_count == 1 ? 0 : vc->conf.sec_elmnt_seq);
3515
3516 for (i = 0, j = 0 ; i < nmax ; i++) {
3517 /* j counts valid entries for this BVD */
3518 if (vc->conf.phys_refnum[i] != 0xffffffff)
3519 j++;
3520 if (vc->conf.phys_refnum[i] == refnum) {
3521 *bvd = &vc->conf;
3522 *idx = i;
3523 return sec * cnt + j - 1;
3524 }
3525 }
3526 if (vc->other_bvds == NULL)
3527 goto bad;
3528
3529 for (n = 1; n < vc->conf.sec_elmnt_count; n++) {
3530 struct vd_config *vd = vc->other_bvds[n-1];
4e587018 3531 sec = vd->sec_elmnt_seq;
3c48f7be 3532 if (sec == DDF_UNUSED_BVD)
3533 continue;
4e587018 3534 for (i = 0, j = 0 ; i < nmax ; i++) {
3535 if (vd->phys_refnum[i] != 0xffffffff)
3536 j++;
3537 if (vd->phys_refnum[i] == refnum) {
3538 *bvd = vd;
3539 *idx = i;
3540 return sec * cnt + j - 1;
3541 }
3542 }
3543 }
3544bad:
3545 *bvd = NULL;
d6e7b083 3546 return DDF_NOTFOUND;
8a38db86 3547}
3548
00bbdbda 3549static struct mdinfo *container_content_ddf(struct supertype *st, char *subarray)
598f0d58
NB		 3550{
3551 /* Given a container loaded by load_super_ddf_all,
3552 * extract information about all the arrays into
3553 * an mdinfo tree.
3554 *
3555 * For each vcl in conflist: create an mdinfo, fill it in,
3556 * then look for matching devices (phys_refnum) in dlist
3557 * and create appropriate device mdinfo.
3558 */
3559 struct ddf_super *ddf = st->sb;
3560 struct mdinfo *rest = NULL;
3561 struct vcl *vc;
3562
3563 for (vc = ddf->conflist ; vc ; vc=vc->next)
3564 {
f21e18ca
N		 3565 unsigned int i;
3566 unsigned int j;
598f0d58 3567 struct mdinfo *this;
00bbdbda 3568 char *ep;
90fa1a29 3569 __u32 *cptr;
8a38db86 3570 unsigned int pd;
00bbdbda
N		 3571
3572 if (subarray &&
3573 (strtoul(subarray, &ep, 10) != vc->vcnum ||
3574 *ep != '\0'))
3575 continue;
3576
a5c7adb3 3577 if (vc->conf.sec_elmnt_count > 1) {
3578 if (check_secondary(vc) != 0)
3579 continue;
3580 }
3581
503975b9 3582 this = xcalloc(1, sizeof(*this));
598f0d58
NB		 3583 this->next = rest;
3584 rest = this;
3585
8a2848a7 3586 if (layout_ddf2md(&vc->conf, &this->array))
3587 continue;
598f0d58 3588 this->array.md_minor = -1;
f35f2525
N		 3589 this->array.major_version = -1;
3590 this->array.minor_version = -2;
90fa1a29
JS		 3591 cptr = (__u32 *)(vc->conf.guid + 16);
3592 this->array.ctime = DECADE + __be32_to_cpu(*cptr);
598f0d58
NB		 3593 this->array.utime = DECADE +
3594 __be32_to_cpu(vc->conf.timestamp);
3595 this->array.chunk_size = 512 << vc->conf.chunk_shift;
3596
59e36268 3597 i = vc->vcnum;
7a7cc504
NB		 3598 if ((ddf->virt->entries[i].state & DDF_state_inconsistent) ||
3599 (ddf->virt->entries[i].init_state & DDF_initstate_mask) !=
ed9d66aa 3600 DDF_init_full) {
598f0d58 3601 this->array.state = 0;
ed9d66aa
NB		 3602 this->resync_start = 0;
3603 } else {
598f0d58 3604 this->array.state = 1;
b7528a20 3605 this->resync_start = MaxSector;
ed9d66aa 3606 }
db42fa9b
N		 3607 memcpy(this->name, ddf->virt->entries[i].name, 16);
3608 this->name[16]=0;
3609 for(j=0; j<16; j++)
3610 if (this->name[j] == ' ')
3611 this->name[j] = 0;
598f0d58
NB		 3612
3613 memset(this->uuid, 0, sizeof(this->uuid));
3614 this->component_size = __be64_to_cpu(vc->conf.blocks);
3615 this->array.size = this->component_size / 2;
5f2aace8 3616 this->container_member = i;
598f0d58 3617
c5afc314
N		 3618 ddf->currentconf = vc;
3619 uuid_from_super_ddf(st, this->uuid);
f646805e 3620 if (!subarray)
3621 ddf->currentconf = NULL;
c5afc314 3622
60f18132 3623 sprintf(this->text_version, "/%s/%d",
4dd2df09 3624 st->container_devnm, this->container_member);
60f18132 3625
8a38db86 3626 for (pd = 0; pd < __be16_to_cpu(ddf->phys->used_pdes); pd++) {
598f0d58
NB		 3627 struct mdinfo *dev;
3628 struct dl *d;
4e587018 3629 const struct vd_config *bvd;
3630 unsigned int iphys;
fa033bec 3631 int stt;
598f0d58 3632
8a38db86 3633 if (ddf->phys->entries[pd].refnum == 0xFFFFFFFF)
bc17324f 3634 continue;
0cf5ef67
N		 3635
3636 stt = __be16_to_cpu(ddf->phys->entries[pd].state);
fa033bec
N		 3637 if ((stt & (DDF_Online|DDF_Failed|DDF_Rebuilding))
3638 != DDF_Online)
3639 continue;
3640
8a38db86 3641 i = get_pd_index_from_refnum(
4e587018 3642 vc, ddf->phys->entries[pd].refnum,
3643 ddf->mppe, &bvd, &iphys);
d6e7b083 3644 if (i == DDF_NOTFOUND)
8a38db86 3645 continue;
3646
fa033bec 3647 this->array.working_disks++;
bc17324f 3648
0cf5ef67 3649 for (d = ddf->dlist; d ; d=d->next)
8a38db86 3650 if (d->disk.refnum ==
3651 ddf->phys->entries[pd].refnum)
0cf5ef67
N		 3652 break;
3653 if (d == NULL)
3654 /* Haven't found that one yet, maybe there are others */
3655 continue;
3656
503975b9 3657 dev = xcalloc(1, sizeof(*dev));
598f0d58
NB		 3658 dev->next = this->devs;
3659 this->devs = dev;
3660
3661 dev->disk.number = __be32_to_cpu(d->disk.refnum);
3662 dev->disk.major = d->major;
3663 dev->disk.minor = d->minor;
3664 dev->disk.raid_disk = i;
3665 dev->disk.state = (1<<MD_DISK_SYNC)|(1<<MD_DISK_ACTIVE);
d23534e4 3666 dev->recovery_start = MaxSector;
598f0d58 3667
120f7677 3668 dev->events = __be32_to_cpu(ddf->primary.seq);
57a66662 3669 dev->data_offset =
3670 __be64_to_cpu(LBA_OFFSET(ddf, bvd)[iphys]);
4e587018 3671 dev->component_size = __be64_to_cpu(bvd->blocks);
598f0d58
NB		 3672 if (d->devname)
3673 strcpy(dev->name, d->devname);
3674 }
3675 }
3676 return rest;
3677}
3678
955e9ea1 3679static int store_super_ddf(struct supertype *st, int fd)
a322f70c 3680{
955e9ea1 3681 struct ddf_super *ddf = st->sb;
a322f70c 3682 unsigned long long dsize;
6416d527 3683 void *buf;
3d2c4fc7 3684 int rc;
a322f70c 3685
955e9ea1
DW		 3686 if (!ddf)
3687 return 1;
3688
a322f70c
DW		 3689 if (!get_dev_size(fd, NULL, &dsize))
3690 return 1;
3691
dbf98368 3692 if (ddf->dlist || ddf->conflist) {
3693 struct stat sta;
3694 struct dl *dl;
3695 int ofd, ret;
3696
3697 if (fstat(fd, &sta) == -1 || !S_ISBLK(sta.st_mode)) {
3698 pr_err("%s: file descriptor for invalid device\n",
3699 __func__);
3700 return 1;
3701 }
3702 for (dl = ddf->dlist; dl; dl = dl->next)
3703 if (dl->major == (int)major(sta.st_rdev) &&
3704 dl->minor == (int)minor(sta.st_rdev))
3705 break;
3706 if (!dl) {
3707 pr_err("%s: couldn't find disk %d/%d\n", __func__,
3708 (int)major(sta.st_rdev),
3709 (int)minor(sta.st_rdev));
3710 return 1;
3711 }
3712 /*
3713 For DDF, writing to just one disk makes no sense.
3714 We would run the risk of writing inconsistent meta data
3715 to the devices. So just call __write_init_super_ddf and
3716 write to all devices, including this one.
3717 Use the fd passed to this function, just in case dl->fd
3718 is invalid.
3719 */
3720 ofd = dl->fd;
3721 dl->fd = fd;
3722 ret = __write_init_super_ddf(st);
3723 dl->fd = ofd;
3724 return ret;
3725 }
3726
3d2c4fc7
DW		 3727 if (posix_memalign(&buf, 512, 512) != 0)
3728 return 1;
6416d527
NB		 3729 memset(buf, 0, 512);
3730
a322f70c 3731 lseek64(fd, dsize-512, 0);
3d2c4fc7 3732 rc = write(fd, buf, 512);
6416d527 3733 free(buf);
3d2c4fc7
DW		 3734 if (rc < 0)
3735 return 1;
a322f70c
DW		 3736 return 0;
3737}
3738
a19c88b8
NB		 3739static int compare_super_ddf(struct supertype *st, struct supertype *tst)
3740{
3741 /*
3742 * return:
3743 * 0 same, or first was empty, and second was copied
3744 * 1 second had wrong number
3745 * 2 wrong uuid
3746 * 3 wrong other info
3747 */
3748 struct ddf_super *first = st->sb;
3749 struct ddf_super *second = tst->sb;
4eefd651 3750 struct dl *dl1, *dl2;
3751 struct vcl *vl1, *vl2;
2d210697 3752 unsigned int max_vds, max_pds, pd, vd;
a19c88b8
NB		 3753
3754 if (!first) {
3755 st->sb = tst->sb;
3756 tst->sb = NULL;
3757 return 0;
3758 }
3759
3760 if (memcmp(first->anchor.guid, second->anchor.guid, DDF_GUID_LEN) != 0)
3761 return 2;
3762
2d210697 3763 if (first->anchor.seq != second->anchor.seq) {
3764 dprintf("%s: sequence number mismatch %u/%u\n", __func__,
3765 __be32_to_cpu(first->anchor.seq),
3766 __be32_to_cpu(second->anchor.seq));
3767 return 3;
3768 }
3769 if (first->max_part != second->max_part ||
3770 first->phys->used_pdes != second->phys->used_pdes ||
3771 first->virt->populated_vdes != second->virt->populated_vdes) {
3772 dprintf("%s: PD/VD number mismatch\n", __func__);
3773 return 3;
3774 }
3775
3776 max_pds = __be16_to_cpu(first->phys->used_pdes);
3777 for (dl2 = second->dlist; dl2; dl2 = dl2->next) {
3778 for (pd = 0; pd < max_pds; pd++)
3779 if (first->phys->entries[pd].refnum == dl2->disk.refnum)
3780 break;
3781 if (pd == max_pds) {
3782 dprintf("%s: no match for disk %08x\n", __func__,
3783 __be32_to_cpu(dl2->disk.refnum));
3784 return 3;
3785 }
3786 }
3787
3788 max_vds = __be16_to_cpu(first->active->max_vd_entries);
3789 for (vl2 = second->conflist; vl2; vl2 = vl2->next) {
3790 if (vl2->conf.magic != DDF_VD_CONF_MAGIC)
3791 continue;
3792 for (vd = 0; vd < max_vds; vd++)
3793 if (!memcmp(first->virt->entries[vd].guid,
3794 vl2->conf.guid, DDF_GUID_LEN))
3795 break;
3796 if (vd == max_vds) {
3797 dprintf("%s: no match for VD config\n", __func__);
3798 return 3;
3799 }
3800 }
a19c88b8 3801 /* FIXME should I look at anything else? */
2d210697 3802
4eefd651 3803 /*
3804 At this point we are fairly sure that the meta data matches.
3805 But the new disk may contain additional local data.
3806 Add it to the super block.
3807 */
3808 for (vl2 = second->conflist; vl2; vl2 = vl2->next) {
3809 for (vl1 = first->conflist; vl1; vl1 = vl1->next)
3810 if (!memcmp(vl1->conf.guid, vl2->conf.guid,
3811 DDF_GUID_LEN))
3812 break;
3813 if (vl1) {
3814 if (vl1->other_bvds != NULL &&
3815 vl1->conf.sec_elmnt_seq !=
3816 vl2->conf.sec_elmnt_seq) {
3817 dprintf("%s: adding BVD %u\n", __func__,
3818 vl2->conf.sec_elmnt_seq);
3819 add_other_bvd(vl1, &vl2->conf,
3820 first->conf_rec_len*512);
3821 }
3822 continue;
3823 }
3824
3825 if (posix_memalign((void **)&vl1, 512,
3826 (first->conf_rec_len*512 +
3827 offsetof(struct vcl, conf))) != 0) {
3828 pr_err("%s could not allocate vcl buf\n",
3829 __func__);
3830 return 3;
3831 }
3832
3833 vl1->next = first->conflist;
3834 vl1->block_sizes = NULL;
4eefd651 3835 memcpy(&vl1->conf, &vl2->conf, first->conf_rec_len*512);
3c48f7be 3836 if (alloc_other_bvds(first, vl1) != 0) {
3837 pr_err("%s could not allocate other bvds\n",
3838 __func__);
3839 free(vl1);
3840 return 3;
3841 }
4eefd651 3842 for (vd = 0; vd < max_vds; vd++)
3843 if (!memcmp(first->virt->entries[vd].guid,
3844 vl1->conf.guid, DDF_GUID_LEN))
3845 break;
3846 vl1->vcnum = vd;
3847 dprintf("%s: added config for VD %u\n", __func__, vl1->vcnum);
3848 first->conflist = vl1;
3849 }
3850
3851 for (dl2 = second->dlist; dl2; dl2 = dl2->next) {
3852 for (dl1 = first->dlist; dl1; dl1 = dl1->next)
3853 if (dl1->disk.refnum == dl2->disk.refnum)
3854 break;
3855 if (dl1)
3856 continue;
3857
3858 if (posix_memalign((void **)&dl1, 512,
3859 sizeof(*dl1) + (first->max_part) * sizeof(dl1->vlist[0]))
3860 != 0) {
3861 pr_err("%s could not allocate disk info buffer\n",
3862 __func__);
3863 return 3;
3864 }
3865 memcpy(dl1, dl2, sizeof(*dl1));
3866 dl1->mdupdate = NULL;
3867 dl1->next = first->dlist;
3868 dl1->fd = -1;
3869 for (pd = 0; pd < max_pds; pd++)
3870 if (first->phys->entries[pd].refnum == dl1->disk.refnum)
3871 break;
3872 dl1->pdnum = pd;
3873 if (dl2->spare) {
3874 if (posix_memalign((void **)&dl1->spare, 512,
3875 first->conf_rec_len*512) != 0) {
3876 pr_err("%s could not allocate spare info buf\n",
3877 __func__);
3878 return 3;
3879 }
3880 memcpy(dl1->spare, dl2->spare, first->conf_rec_len*512);
3881 }
3882 for (vd = 0 ; vd < first->max_part ; vd++) {
3883 if (!dl2->vlist[vd]) {
3884 dl1->vlist[vd] = NULL;
3885 continue;
3886 }
3887 for (vl1 = first->conflist; vl1; vl1 = vl1->next) {
3888 if (!memcmp(vl1->conf.guid,
3889 dl2->vlist[vd]->conf.guid,
3890 DDF_GUID_LEN))
3891 break;
3892 dl1->vlist[vd] = vl1;
3893 }
3894 }
3895 first->dlist = dl1;
3896 dprintf("%s: added disk %d: %08x\n", __func__, dl1->pdnum,
3897 dl1->disk.refnum);
3898 }
3899
a19c88b8
NB		 3900 return 0;
3901}
3902
0e600426 3903#ifndef MDASSEMBLE
4e5528c6
NB		 3904/*
3905 * A new array 'a' has been started which claims to be instance 'inst'
3906 * within container 'c'.
3907 * We need to confirm that the array matches the metadata in 'c' so
3908 * that we don't corrupt any metadata.
3909 */
cba0191b 3910static int ddf_open_new(struct supertype *c, struct active_array *a, char *inst)
549e9569 3911{
a2aa439e 3912 struct ddf_super *ddf = c->sb;
3913 int n = atoi(inst);
fb9d0acb 3914 if (all_ff(ddf->virt->entries[n].guid)) {
3915 pr_err("%s: subarray %d doesn't exist\n", __func__, n);
a2aa439e 3916 return -ENODEV;
3917 }
3918 dprintf("ddf: open_new %d\n", n);
3919 a->info.container_member = n;
549e9569
NB		 3920 return 0;
3921}
3922
4e5528c6
NB		 3923/*
3924 * The array 'a' is to be marked clean in the metadata.
ed9d66aa 3925 * If '->resync_start' is not ~(unsigned long long)0, then the array is only
4e5528c6
NB		 3926 * clean up to the point (in sectors). If that cannot be recorded in the
3927 * metadata, then leave it as dirty.
3928 *
3929 * For DDF, we need to clear the DDF_state_inconsistent bit in the
3930 * !global! virtual_disk.virtual_entry structure.
3931 */
01f157d7 3932static int ddf_set_array_state(struct active_array *a, int consistent)
549e9569 3933{
4e5528c6
NB		 3934 struct ddf_super *ddf = a->container->sb;
3935 int inst = a->info.container_member;
18a2f463 3936 int old = ddf->virt->entries[inst].state;
01f157d7
N		 3937 if (consistent == 2) {
3938 /* Should check if a recovery should be started FIXME */
3939 consistent = 1;
b7941fd6 3940 if (!is_resync_complete(&a->info))
01f157d7
N		 3941 consistent = 0;
3942 }
ed9d66aa
NB		 3943 if (consistent)
3944 ddf->virt->entries[inst].state &= ~DDF_state_inconsistent;
3945 else
4e5528c6 3946 ddf->virt->entries[inst].state |= DDF_state_inconsistent;
18a2f463 3947 if (old != ddf->virt->entries[inst].state)
7d5a7ff3 3948 ddf_set_updates_pending(ddf);
18a2f463
NB		 3949
3950 old = ddf->virt->entries[inst].init_state;
ed9d66aa 3951 ddf->virt->entries[inst].init_state &= ~DDF_initstate_mask;
b7941fd6 3952 if (is_resync_complete(&a->info))
ed9d66aa 3953 ddf->virt->entries[inst].init_state |= DDF_init_full;
b7941fd6 3954 else if (a->info.resync_start == 0)
ed9d66aa 3955 ddf->virt->entries[inst].init_state |= DDF_init_not;
4e5528c6 3956 else
ed9d66aa 3957 ddf->virt->entries[inst].init_state |= DDF_init_quick;
18a2f463 3958 if (old != ddf->virt->entries[inst].init_state)
7d5a7ff3 3959 ddf_set_updates_pending(ddf);
ed9d66aa 3960
b27336a2 3961 dprintf("ddf mark %d/%s (%d) %s %llu\n", inst,
3962 guid_str(ddf->virt->entries[inst].guid), a->curr_state,
3963 consistent?"clean":"dirty",
b7941fd6 3964 a->info.resync_start);
01f157d7 3965 return consistent;
fd7cde1b
DW		 3966}
3967
5ec636b7 3968static int get_bvd_state(const struct ddf_super *ddf,
3969 const struct vd_config *vc)
3970{
3971 unsigned int i, n_bvd, working = 0;
3972 unsigned int n_prim = __be16_to_cpu(vc->prim_elmnt_count);
3973 int pd, st, state;
3974 for (i = 0; i < n_prim; i++) {
3975 if (!find_index_in_bvd(ddf, vc, i, &n_bvd))
3976 continue;
3977 pd = find_phys(ddf, vc->phys_refnum[n_bvd]);
3978 if (pd < 0)
3979 continue;
3980 st = __be16_to_cpu(ddf->phys->entries[pd].state);
3981 if ((st & (DDF_Online|DDF_Failed|DDF_Rebuilding))
3982 == DDF_Online)
3983 working++;
3984 }
3985
3986 state = DDF_state_degraded;
3987 if (working == n_prim)
3988 state = DDF_state_optimal;
3989 else
3990 switch (vc->prl) {
3991 case DDF_RAID0:
3992 case DDF_CONCAT:
3993 case DDF_JBOD:
3994 state = DDF_state_failed;
3995 break;
3996 case DDF_RAID1:
3997 if (working == 0)
3998 state = DDF_state_failed;
3999 else if (working >= 2)
4000 state = DDF_state_part_optimal;
4001 break;
4002 case DDF_RAID4:
4003 case DDF_RAID5:
4004 if (working < n_prim - 1)
4005 state = DDF_state_failed;
4006 break;
4007 case DDF_RAID6:
4008 if (working < n_prim - 2)
4009 state = DDF_state_failed;
4010 else if (working == n_prim - 1)
4011 state = DDF_state_part_optimal;
4012 break;
4013 }
4014 return state;
4015}
4016
0777d17d 4017static int secondary_state(int state, int other, int seclevel)
4018{
4019 if (state == DDF_state_optimal && other == DDF_state_optimal)
4020 return DDF_state_optimal;
4021 if (seclevel == DDF_2MIRRORED) {
4022 if (state == DDF_state_optimal || other == DDF_state_optimal)
4023 return DDF_state_part_optimal;
4024 if (state == DDF_state_failed && other == DDF_state_failed)
4025 return DDF_state_failed;
4026 return DDF_state_degraded;
4027 } else {
4028 if (state == DDF_state_failed || other == DDF_state_failed)
4029 return DDF_state_failed;
4030 if (state == DDF_state_degraded || other == DDF_state_degraded)
4031 return DDF_state_degraded;
4032 return DDF_state_part_optimal;
4033 }
4034}
4035
4036static int get_svd_state(const struct ddf_super *ddf, const struct vcl *vcl)
4037{
4038 int state = get_bvd_state(ddf, &vcl->conf);
4039 unsigned int i;
4040 for (i = 1; i < vcl->conf.sec_elmnt_count; i++) {
4041 state = secondary_state(
4042 state,
4043 get_bvd_state(ddf, vcl->other_bvds[i-1]),
4044 vcl->conf.srl);
4045 }
4046 return state;
4047}
4048
7a7cc504
NB		 4049/*
4050 * The state of each disk is stored in the global phys_disk structure
4051 * in phys_disk.entries[n].state.
4052 * This makes various combinations awkward.
4053 * - When a device fails in any array, it must be failed in all arrays
4054 * that include a part of this device.
4055 * - When a component is rebuilding, we cannot include it officially in the
4056 * array unless this is the only array that uses the device.
4057 *
4058 * So: when transitioning:
4059 * Online -> failed, just set failed flag. monitor will propagate
4060 * spare -> online, the device might need to be added to the array.
4061 * spare -> failed, just set failed. Don't worry if in array or not.
4062 */
8d45d196 4063static void ddf_set_disk(struct active_array *a, int n, int state)
549e9569 4064{
7a7cc504 4065 struct ddf_super *ddf = a->container->sb;
baba3f4e 4066 unsigned int inst = a->info.container_member, n_bvd;
4067 struct vcl *vcl;
4068 struct vd_config *vc = find_vdcr(ddf, inst, (unsigned int)n,
4069 &n_bvd, &vcl);
4070 int pd;
e1316fab
N		 4071 struct mdinfo *mdi;
4072 struct dl *dl;
7a7cc504
NB		 4073
4074 if (vc == NULL) {
2c514b71 4075 dprintf("ddf: cannot find instance %d!!\n", inst);
7a7cc504
NB		 4076 return;
4077 }
e1316fab
N		 4078 /* Find the matching slot in 'info'. */
4079 for (mdi = a->info.devs; mdi; mdi = mdi->next)
4080 if (mdi->disk.raid_disk == n)
4081 break;
4082 if (!mdi)
4083 return;
4084
4085 /* and find the 'dl' entry corresponding to that. */
4086 for (dl = ddf->dlist; dl; dl = dl->next)
77632af9
N		 4087 if (mdi->state_fd >= 0 &&
4088 mdi->disk.major == dl->major &&
e1316fab
N		 4089 mdi->disk.minor == dl->minor)
4090 break;
4091 if (!dl)
4092 return;
4093
baba3f4e 4094 pd = find_phys(ddf, vc->phys_refnum[n_bvd]);
e1316fab
N		 4095 if (pd < 0 || pd != dl->pdnum) {
4096 /* disk doesn't currently exist or has changed.
4097 * If it is now in_sync, insert it. */
baba3f4e 4098 dprintf("%s: phys disk not found for %d: %d/%d ref %08x\n",
4099 __func__, dl->pdnum, dl->major, dl->minor,
4100 dl->disk.refnum);
4101 dprintf("%s: array %u disk %u ref %08x pd %d\n",
4102 __func__, inst, n_bvd, vc->phys_refnum[n_bvd], pd);
7a7cc504 4103 if ((state & DS_INSYNC) && ! (state & DS_FAULTY)) {
baba3f4e 4104 pd = dl->pdnum; /* FIXME: is this really correct ? */
4105 vc->phys_refnum[n_bvd] = dl->disk.refnum;
57a66662 4106 LBA_OFFSET(ddf, vc)[n_bvd] =
4107 __cpu_to_be64(mdi->data_offset);
e1316fab
N		 4108 ddf->phys->entries[pd].type &=
4109 ~__cpu_to_be16(DDF_Global_Spare);
4110 ddf->phys->entries[pd].type |=
4111 __cpu_to_be16(DDF_Active_in_VD);
7d5a7ff3 4112 ddf_set_updates_pending(ddf);
7a7cc504
NB		 4113 }
4114 } else {
18a2f463 4115 int old = ddf->phys->entries[pd].state;
7a7cc504
NB		 4116 if (state & DS_FAULTY)
4117 ddf->phys->entries[pd].state |= __cpu_to_be16(DDF_Failed);
4118 if (state & DS_INSYNC) {
4119 ddf->phys->entries[pd].state |= __cpu_to_be16(DDF_Online);
4120 ddf->phys->entries[pd].state &= __cpu_to_be16(~DDF_Rebuilding);
4121 }
18a2f463 4122 if (old != ddf->phys->entries[pd].state)
7d5a7ff3 4123 ddf_set_updates_pending(ddf);
7a7cc504
NB		 4124 }
4125
2c514b71 4126 dprintf("ddf: set_disk %d to %x\n", n, state);
7e1432fb 4127
7a7cc504
NB		 4128 /* Now we need to check the state of the array and update
4129 * virtual_disk.entries[n].state.
4130 * It needs to be one of "optimal", "degraded", "failed".
4131 * I don't understand 'deleted' or 'missing'.
4132 */
0777d17d 4133 state = get_svd_state(ddf, vcl);
7a7cc504 4134
18a2f463
NB		 4135 if (ddf->virt->entries[inst].state !=
4136 ((ddf->virt->entries[inst].state & ~DDF_state_mask)
4137 | state)) {
4138
4139 ddf->virt->entries[inst].state =
4140 (ddf->virt->entries[inst].state & ~DDF_state_mask)
4141 | state;
7d5a7ff3 4142 ddf_set_updates_pending(ddf);
18a2f463 4143 }
7a7cc504 4144
549e9569
NB		 4145}
4146
2e735d19 4147static void ddf_sync_metadata(struct supertype *st)
549e9569 4148{
7a7cc504
NB		 4149
4150 /*
4151 * Write all data to all devices.
4152 * Later, we might be able to track whether only local changes
4153 * have been made, or whether any global data has been changed,
4154 * but ddf is sufficiently weird that it probably always
4155 * changes global data ....
4156 */
18a2f463
NB		 4157 struct ddf_super *ddf = st->sb;
4158 if (!ddf->updates_pending)
4159 return;
4160 ddf->updates_pending = 0;
1cc7f4fe 4161 __write_init_super_ddf(st);
2c514b71 4162 dprintf("ddf: sync_metadata\n");
549e9569
NB		 4163}
4164
f646805e 4165static int del_from_conflist(struct vcl **list, const char *guid)
4166{
4167 struct vcl **p;
4168 int found = 0;
4169 for (p = list; p && *p; p = &((*p)->next))
4170 if (!memcmp((*p)->conf.guid, guid, DDF_GUID_LEN)) {
4171 found = 1;
4172 *p = (*p)->next;
4173 }
4174 return found;
4175}
4176
4177static int _kill_subarray_ddf(struct ddf_super *ddf, const char *guid)
4178{
4179 struct dl *dl;
4180 unsigned int vdnum, i;
4181 vdnum = find_vde_by_guid(ddf, guid);
4182 if (vdnum == DDF_NOTFOUND) {
4183 pr_err("%s: could not find VD %s\n", __func__,
4184 guid_str(guid));
4185 return -1;
4186 }
4187 if (del_from_conflist(&ddf->conflist, guid) == 0) {
4188 pr_err("%s: could not find conf %s\n", __func__,
4189 guid_str(guid));
4190 return -1;
4191 }
4192 for (dl = ddf->dlist; dl; dl = dl->next)
4193 for (i = 0; i < ddf->max_part; i++)
4194 if (dl->vlist[i] != NULL &&
4195 !memcmp(dl->vlist[i]->conf.guid, guid,
4196 DDF_GUID_LEN))
4197 dl->vlist[i] = NULL;
4198 memset(ddf->virt->entries[vdnum].guid, 0xff, DDF_GUID_LEN);
4199 dprintf("%s: deleted %s\n", __func__, guid_str(guid));
4200 return 0;
4201}
4202
4203static int kill_subarray_ddf(struct supertype *st)
4204{
4205 struct ddf_super *ddf = st->sb;
4206 /*
4207 * currentconf is set in container_content_ddf,
4208 * called with subarray arg
4209 */
4210 struct vcl *victim = ddf->currentconf;
4211 struct vd_config *conf;
4212 ddf->currentconf = NULL;
4213 unsigned int vdnum;
4214 if (!victim) {
4215 pr_err("%s: nothing to kill\n", __func__);
4216 return -1;
4217 }
4218 conf = &victim->conf;
4219 vdnum = find_vde_by_guid(ddf, conf->guid);
4220 if (vdnum == DDF_NOTFOUND) {
4221 pr_err("%s: could not find VD %s\n", __func__,
4222 guid_str(conf->guid));
4223 return -1;
4224 }
4225 if (st->update_tail) {
4226 struct virtual_disk *vd;
4227 int len = sizeof(struct virtual_disk)
4228 + sizeof(struct virtual_entry);
4229 vd = xmalloc(len);
4230 if (vd == NULL) {
4231 pr_err("%s: failed to allocate %d bytes\n", __func__,
4232 len);
4233 return -1;
4234 }
4235 memset(vd, 0 , len);
4236 vd->magic = DDF_VIRT_RECORDS_MAGIC;
4237 vd->populated_vdes = 0;
4238 memcpy(vd->entries[0].guid, conf->guid, DDF_GUID_LEN);
4239 /* we use DDF_state_deleted as marker */
4240 vd->entries[0].state = DDF_state_deleted;
4241 append_metadata_update(st, vd, len);
4242 } else
4243 _kill_subarray_ddf(ddf, conf->guid);
4244 return 0;
4245}
4246
88c164f4
NB		 4247static void ddf_process_update(struct supertype *st,
4248 struct metadata_update *update)
4249{
4250 /* Apply this update to the metadata.
4251 * The first 4 bytes are a DDF_*_MAGIC which guides
4252 * our actions.
4253 * Possible update are:
4254 * DDF_PHYS_RECORDS_MAGIC
4dd968cc
N		 4255 * Add a new physical device or remove an old one.
4256 * Changes to this record only happen implicitly.
88c164f4
NB		 4257 * used_pdes is the device number.
4258 * DDF_VIRT_RECORDS_MAGIC
4259 * Add a new VD. Possibly also change the 'access' bits.
4260 * populated_vdes is the entry number.
4261 * DDF_VD_CONF_MAGIC
4262 * New or updated VD. the VIRT_RECORD must already
4263 * exist. For an update, phys_refnum and lba_offset
4264 * (at least) are updated, and the VD_CONF must
4265 * be written to precisely those devices listed with
4266 * a phys_refnum.
4267 * DDF_SPARE_ASSIGN_MAGIC
4268 * replacement Spare Assignment Record... but for which device?
4269 *
4270 * So, e.g.:
4271 * - to create a new array, we send a VIRT_RECORD and
4272 * a VD_CONF. Then assemble and start the array.
4273 * - to activate a spare we send a VD_CONF to add the phys_refnum
4274 * and offset. This will also mark the spare as active with
4275 * a spare-assignment record.
4276 */
4277 struct ddf_super *ddf = st->sb;
4278 __u32 *magic = (__u32*)update->buf;
4279 struct phys_disk *pd;
4280 struct virtual_disk *vd;
4281 struct vd_config *vc;
4282 struct vcl *vcl;
4283 struct dl *dl;
f21e18ca
N		 4284 unsigned int mppe;
4285 unsigned int ent;
c7079c84 4286 unsigned int pdnum, pd2;
88c164f4 4287
2c514b71 4288 dprintf("Process update %x\n", *magic);
7e1432fb 4289
88c164f4
NB		 4290 switch (*magic) {
4291 case DDF_PHYS_RECORDS_MAGIC:
4292
4293 if (update->len != (sizeof(struct phys_disk) +
4294 sizeof(struct phys_disk_entry)))
4295 return;
4296 pd = (struct phys_disk*)update->buf;
4297
4298 ent = __be16_to_cpu(pd->used_pdes);
4299 if (ent >= __be16_to_cpu(ddf->phys->max_pdes))
4300 return;
4dd968cc
N		 4301 if (pd->entries[0].state & __cpu_to_be16(DDF_Missing)) {
4302 struct dl **dlp;
4303 /* removing this disk. */
4304 ddf->phys->entries[ent].state |= __cpu_to_be16(DDF_Missing);
4305 for (dlp = &ddf->dlist; *dlp; dlp = &(*dlp)->next) {
4306 struct dl *dl = *dlp;
4307 if (dl->pdnum == (signed)ent) {
4308 close(dl->fd);
4309 dl->fd = -1;
4310 /* FIXME this doesn't free
4311 * dl->devname */
4312 update->space = dl;
4313 *dlp = dl->next;
4314 break;
4315 }
4316 }
7d5a7ff3 4317 ddf_set_updates_pending(ddf);
4dd968cc
N		 4318 return;
4319 }
88c164f4
NB		 4320 if (!all_ff(ddf->phys->entries[ent].guid))
4321 return;
4322 ddf->phys->entries[ent] = pd->entries[0];
4323 ddf->phys->used_pdes = __cpu_to_be16(1 +
613b0d17 4324 __be16_to_cpu(ddf->phys->used_pdes));
7d5a7ff3 4325 ddf_set_updates_pending(ddf);
2cc2983d
N		 4326 if (ddf->add_list) {
4327 struct active_array *a;
4328 struct dl *al = ddf->add_list;
4329 ddf->add_list = al->next;
4330
4331 al->next = ddf->dlist;
4332 ddf->dlist = al;
4333
4334 /* As a device has been added, we should check
4335 * for any degraded devices that might make
4336 * use of this spare */
4337 for (a = st->arrays ; a; a=a->next)
4338 a->check_degraded = 1;
4339 }
88c164f4
NB		 4340 break;
4341
4342 case DDF_VIRT_RECORDS_MAGIC:
4343
4344 if (update->len != (sizeof(struct virtual_disk) +
4345 sizeof(struct virtual_entry)))
4346 return;
4347 vd = (struct virtual_disk*)update->buf;
4348
f646805e 4349 if (vd->entries[0].state == DDF_state_deleted) {
4350 if (_kill_subarray_ddf(ddf, vd->entries[0].guid))
4351 return;
4352 } else {
4353
4354 ent = find_unused_vde(ddf);
4355 if (ent == DDF_NOTFOUND)
4356 return;
4357 ddf->virt->entries[ent] = vd->entries[0];
4358 ddf->virt->populated_vdes =
4359 __cpu_to_be16(
4360 1 + __be16_to_cpu(
4361 ddf->virt->populated_vdes));
4362 }
7d5a7ff3 4363 ddf_set_updates_pending(ddf);
88c164f4
NB		 4364 break;
4365
4366 case DDF_VD_CONF_MAGIC:
2c514b71 4367 dprintf("len %d %d\n", update->len, ddf->conf_rec_len);
88c164f4
NB		 4368
4369 mppe = __be16_to_cpu(ddf->anchor.max_primary_element_entries);
f21e18ca 4370 if ((unsigned)update->len != ddf->conf_rec_len * 512)
88c164f4
NB		 4371 return;
4372 vc = (struct vd_config*)update->buf;
4373 for (vcl = ddf->conflist; vcl ; vcl = vcl->next)
4374 if (memcmp(vcl->conf.guid, vc->guid, DDF_GUID_LEN) == 0)
4375 break;
2c514b71 4376 dprintf("vcl = %p\n", vcl);
88c164f4
NB		 4377 if (vcl) {
4378 /* An update, just copy the phys_refnum and lba_offset
4379 * fields
4380 */
21a63551 4381 struct vd_config *conf = &vcl->conf;
4382 if (vcl->other_bvds != NULL &&
4383 conf->sec_elmnt_seq != vc->sec_elmnt_seq) {
4384 unsigned int i;
4385 for (i = 1; i < conf->sec_elmnt_count; i++)
4386 if (vcl->other_bvds[i-1]->sec_elmnt_seq
4387 == vc->sec_elmnt_seq)
4388 break;
4389 if (i == conf->sec_elmnt_count) {
4390 pr_err("%s/DDF_VD_CONF_MAGIC: BVD %u not found\n",
4391 __func__, vc->sec_elmnt_seq);
4392 return;
4393 }
4394 conf = vcl->other_bvds[i-1];
4395 }
4396 memcpy(conf->phys_refnum, vc->phys_refnum,
88c164f4
NB		 4397 mppe * (sizeof(__u32) + sizeof(__u64)));
4398 } else {
4399 /* A new VD_CONF */
e6b9548d
DW		 4400 if (!update->space)
4401 return;
88c164f4
NB		 4402 vcl = update->space;
4403 update->space = NULL;
4404 vcl->next = ddf->conflist;
edd8d13c 4405 memcpy(&vcl->conf, vc, update->len);
fb9d0acb 4406 ent = find_vde_by_guid(ddf, vc->guid);
4407 if (ent == DDF_NOTFOUND)
4408 return;
4409 vcl->vcnum = ent;
88c164f4
NB		 4410 ddf->conflist = vcl;
4411 }
c7079c84
N		 4412 /* Set DDF_Transition on all Failed devices - to help
4413 * us detect those that are no longer in use
4414 */
4415 for (pdnum = 0; pdnum < __be16_to_cpu(ddf->phys->used_pdes); pdnum++)
4416 if (ddf->phys->entries[pdnum].state
4417 & __be16_to_cpu(DDF_Failed))
4418 ddf->phys->entries[pdnum].state
4419 |= __be16_to_cpu(DDF_Transition);
88c164f4
NB		 4420 /* Now make sure vlist is correct for each dl. */
4421 for (dl = ddf->dlist; dl; dl = dl->next) {
f21e18ca 4422 unsigned int vn = 0;
8401644c 4423 int in_degraded = 0;
5838fccd 4424 for (vcl = ddf->conflist; vcl ; vcl = vcl->next) {
4425 unsigned int dn, ibvd;
4426 const struct vd_config *conf;
4427 int vstate;
4428 dn = get_pd_index_from_refnum(vcl,
4429 dl->disk.refnum,
4430 ddf->mppe,
4431 &conf, &ibvd);
4432 if (dn == DDF_NOTFOUND)
4433 continue;
4434 dprintf("dev %d/%08x has %s (sec=%u) at %d\n",
4435 dl->pdnum, dl->disk.refnum,
4436 guid_str(conf->guid),
4437 conf->sec_elmnt_seq, vn);
4438 /* Clear the Transition flag */
4439 if (ddf->phys->entries[dl->pdnum].state
4440 & __be16_to_cpu(DDF_Failed))
4441 ddf->phys->entries[dl->pdnum].state &=
4442 ~__be16_to_cpu(DDF_Transition);
4443 dl->vlist[vn++] = vcl;
4444 vstate = ddf->virt->entries[vcl->vcnum].state
4445 & DDF_state_mask;
4446 if (vstate == DDF_state_degraded ||
4447 vstate == DDF_state_part_optimal)
4448 in_degraded = 1;
4449 }
88c164f4
NB		 4450 while (vn < ddf->max_part)
4451 dl->vlist[vn++] = NULL;
7e1432fb
NB		 4452 if (dl->vlist[0]) {
4453 ddf->phys->entries[dl->pdnum].type &=
4454 ~__cpu_to_be16(DDF_Global_Spare);
8401644c
N		 4455 if (!(ddf->phys->entries[dl->pdnum].type &
4456 __cpu_to_be16(DDF_Active_in_VD))) {
613b0d17
N		 4457 ddf->phys->entries[dl->pdnum].type |=
4458 __cpu_to_be16(DDF_Active_in_VD);
4459 if (in_degraded)
4460 ddf->phys->entries[dl->pdnum].state |=
4461 __cpu_to_be16(DDF_Rebuilding);
4462 }
7e1432fb
NB		 4463 }
4464 if (dl->spare) {
4465 ddf->phys->entries[dl->pdnum].type &=
4466 ~__cpu_to_be16(DDF_Global_Spare);
4467 ddf->phys->entries[dl->pdnum].type |=
4468 __cpu_to_be16(DDF_Spare);
4469 }
4470 if (!dl->vlist[0] && !dl->spare) {
4471 ddf->phys->entries[dl->pdnum].type |=
4472 __cpu_to_be16(DDF_Global_Spare);
4473 ddf->phys->entries[dl->pdnum].type &=
4474 ~__cpu_to_be16(DDF_Spare |
4475 DDF_Active_in_VD);
4476 }
88c164f4 4477 }
c7079c84
N		 4478
4479 /* Now remove any 'Failed' devices that are not part
4480 * of any VD. They will have the Transition flag set.
4481 * Once done, we need to update all dl->pdnum numbers.
4482 */
4483 pd2 = 0;
4484 for (pdnum = 0; pdnum < __be16_to_cpu(ddf->phys->used_pdes); pdnum++)
4485 if ((ddf->phys->entries[pdnum].state
4486 & __be16_to_cpu(DDF_Failed))
4487 && (ddf->phys->entries[pdnum].state
4488 & __be16_to_cpu(DDF_Transition)))
4489 /* skip this one */;
4490 else if (pdnum == pd2)
4491 pd2++;
4492 else {
4493 ddf->phys->entries[pd2] = ddf->phys->entries[pdnum];
4494 for (dl = ddf->dlist; dl; dl = dl->next)
4495 if (dl->pdnum == (int)pdnum)
4496 dl->pdnum = pd2;
4497 pd2++;
4498 }
4499 ddf->phys->used_pdes = __cpu_to_be16(pd2);
4500 while (pd2 < pdnum) {
4501 memset(ddf->phys->entries[pd2].guid, 0xff, DDF_GUID_LEN);
4502 pd2++;
4503 }
4504
7d5a7ff3 4505 ddf_set_updates_pending(ddf);
88c164f4
NB		 4506 break;
4507 case DDF_SPARE_ASSIGN_MAGIC:
4508 default: break;
4509 }
4510}
4511
edd8d13c
NB		 4512static void ddf_prepare_update(struct supertype *st,
4513 struct metadata_update *update)
4514{
4515 /* This update arrived at managemon.
4516 * We are about to pass it to monitor.
4517 * If a malloc is needed, do it here.
4518 */
4519 struct ddf_super *ddf = st->sb;
4520 __u32 *magic = (__u32*)update->buf;
4521 if (*magic == DDF_VD_CONF_MAGIC)
e6b9548d 4522 if (posix_memalign(&update->space, 512,
613b0d17
N		 4523 offsetof(struct vcl, conf)
4524 + ddf->conf_rec_len * 512) != 0)
e6b9548d 4525 update->space = NULL;
edd8d13c
NB		 4526}
4527
7e1432fb
NB		 4528/*
4529 * Check if the array 'a' is degraded but not failed.
4530 * If it is, find as many spares as are available and needed and
4531 * arrange for their inclusion.
4532 * We only choose devices which are not already in the array,
4533 * and prefer those with a spare-assignment to this array.
4534 * otherwise we choose global spares - assuming always that
4535 * there is enough room.
4536 * For each spare that we assign, we return an 'mdinfo' which
4537 * describes the position for the device in the array.
4538 * We also add to 'updates' a DDF_VD_CONF_MAGIC update with
4539 * the new phys_refnum and lba_offset values.
4540 *
4541 * Only worry about BVDs at the moment.
4542 */
4543static struct mdinfo *ddf_activate_spare(struct active_array *a,
4544 struct metadata_update **updates)
4545{
4546 int working = 0;
4547 struct mdinfo *d;
4548 struct ddf_super *ddf = a->container->sb;
4549 int global_ok = 0;
4550 struct mdinfo *rv = NULL;
4551 struct mdinfo *di;
4552 struct metadata_update *mu;
4553 struct dl *dl;
4554 int i;
baba3f4e 4555 struct vcl *vcl;
7e1432fb 4556 struct vd_config *vc;
baba3f4e 4557 unsigned int n_bvd;
7e1432fb 4558
7e1432fb
NB		 4559 for (d = a->info.devs ; d ; d = d->next) {
4560 if ((d->curr_state & DS_FAULTY) &&
613b0d17 4561 d->state_fd >= 0)
7e1432fb
NB		 4562 /* wait for Removal to happen */
4563 return NULL;
4564 if (d->state_fd >= 0)
4565 working ++;
4566 }
4567
2c514b71
NB		 4568 dprintf("ddf_activate: working=%d (%d) level=%d\n", working, a->info.array.raid_disks,
4569 a->info.array.level);
7e1432fb
NB		 4570 if (working == a->info.array.raid_disks)
4571 return NULL; /* array not degraded */
4572 switch (a->info.array.level) {
4573 case 1:
4574 if (working == 0)
4575 return NULL; /* failed */
4576 break;
4577 case 4:
4578 case 5:
4579 if (working < a->info.array.raid_disks - 1)
4580 return NULL; /* failed */
4581 break;
4582 case 6:
4583 if (working < a->info.array.raid_disks - 2)
4584 return NULL; /* failed */
4585 break;
4586 default: /* concat or stripe */
4587 return NULL; /* failed */
4588 }
4589
4590 /* For each slot, if it is not working, find a spare */
4591 dl = ddf->dlist;
4592 for (i = 0; i < a->info.array.raid_disks; i++) {
4593 for (d = a->info.devs ; d ; d = d->next)
4594 if (d->disk.raid_disk == i)
4595 break;
2c514b71 4596 dprintf("found %d: %p %x\n", i, d, d?d->curr_state:0);
7e1432fb
NB		 4597 if (d && (d->state_fd >= 0))
4598 continue;
4599
4600 /* OK, this device needs recovery. Find a spare */
4601 again:
4602 for ( ; dl ; dl = dl->next) {
4603 unsigned long long esize;
4604 unsigned long long pos;
4605 struct mdinfo *d2;
4606 int is_global = 0;
4607 int is_dedicated = 0;
4608 struct extent *ex;
f21e18ca 4609 unsigned int j;
7e1432fb
NB		 4610 /* If in this array, skip */
4611 for (d2 = a->info.devs ; d2 ; d2 = d2->next)
7590d562
N		 4612 if (d2->state_fd >= 0 &&
4613 d2->disk.major == dl->major &&
7e1432fb 4614 d2->disk.minor == dl->minor) {
2c514b71 4615 dprintf("%x:%x already in array\n", dl->major, dl->minor);
7e1432fb
NB		 4616 break;
4617 }
4618 if (d2)
4619 continue;
4620 if (ddf->phys->entries[dl->pdnum].type &
4621 __cpu_to_be16(DDF_Spare)) {
4622 /* Check spare assign record */
4623 if (dl->spare) {
4624 if (dl->spare->type & DDF_spare_dedicated) {
4625 /* check spare_ents for guid */
4626 for (j = 0 ;
4627 j < __be16_to_cpu(dl->spare->populated);
4628 j++) {
4629 if (memcmp(dl->spare->spare_ents[j].guid,
4630 ddf->virt->entries[a->info.container_member].guid,
4631 DDF_GUID_LEN) == 0)
4632 is_dedicated = 1;
4633 }
4634 } else
4635 is_global = 1;
4636 }
4637 } else if (ddf->phys->entries[dl->pdnum].type &
4638 __cpu_to_be16(DDF_Global_Spare)) {
4639 is_global = 1;
e0e7aeaa
N		 4640 } else if (!(ddf->phys->entries[dl->pdnum].state &
4641 __cpu_to_be16(DDF_Failed))) {
4642 /* we can possibly use some of this */
4643 is_global = 1;
7e1432fb
NB		 4644 }
4645 if ( ! (is_dedicated ||
4646 (is_global && global_ok))) {
2c514b71 4647 dprintf("%x:%x not suitable: %d %d\n", dl->major, dl->minor,
613b0d17 4648 is_dedicated, is_global);
7e1432fb
NB		 4649 continue;
4650 }
4651
4652 /* We are allowed to use this device - is there space?
4653 * We need a->info.component_size sectors */
4654 ex = get_extents(ddf, dl);
4655 if (!ex) {
2c514b71 4656 dprintf("cannot get extents\n");
7e1432fb
NB		 4657 continue;
4658 }
4659 j = 0; pos = 0;
4660 esize = 0;
4661
4662 do {
4663 esize = ex[j].start - pos;
4664 if (esize >= a->info.component_size)
4665 break;
e5cc7d46
N		 4666 pos = ex[j].start + ex[j].size;
4667 j++;
4668 } while (ex[j-1].size);
7e1432fb
NB		 4669
4670 free(ex);
4671 if (esize < a->info.component_size) {
e5cc7d46
N		 4672 dprintf("%x:%x has no room: %llu %llu\n",
4673 dl->major, dl->minor,
2c514b71 4674 esize, a->info.component_size);
7e1432fb
NB		 4675 /* No room */
4676 continue;
4677 }
4678
4679 /* Cool, we have a device with some space at pos */
503975b9 4680 di = xcalloc(1, sizeof(*di));
7e1432fb
NB		 4681 di->disk.number = i;
4682 di->disk.raid_disk = i;
4683 di->disk.major = dl->major;
4684 di->disk.minor = dl->minor;
4685 di->disk.state = 0;
d23534e4 4686 di->recovery_start = 0;
7e1432fb
NB		 4687 di->data_offset = pos;
4688 di->component_size = a->info.component_size;
4689 di->container_member = dl->pdnum;
4690 di->next = rv;
4691 rv = di;
2c514b71
NB		 4692 dprintf("%x:%x to be %d at %llu\n", dl->major, dl->minor,
4693 i, pos);
7e1432fb
NB		 4694
4695 break;
4696 }
4697 if (!dl && ! global_ok) {
4698 /* not enough dedicated spares, try global */
4699 global_ok = 1;
4700 dl = ddf->dlist;
4701 goto again;
4702 }
4703 }
4704
4705 if (!rv)
4706 /* No spares found */
4707 return rv;
4708 /* Now 'rv' has a list of devices to return.
4709 * Create a metadata_update record to update the
4710 * phys_refnum and lba_offset values
4711 */
503975b9
N		 4712 mu = xmalloc(sizeof(*mu));
4713 if (posix_memalign(&mu->space, 512, sizeof(struct vcl)) != 0) {
79244939
DW		 4714 free(mu);
4715 mu = NULL;
4716 }
503975b9 4717 mu->buf = xmalloc(ddf->conf_rec_len * 512);
7590d562
N		 4718 mu->len = ddf->conf_rec_len * 512;
4719 mu->space = NULL;
f50ae22e 4720 mu->space_list = NULL;
7e1432fb 4721 mu->next = *updates;
baba3f4e 4722 vc = find_vdcr(ddf, a->info.container_member, di->disk.raid_disk,
4723 &n_bvd, &vcl);
7e1432fb
NB		 4724 memcpy(mu->buf, vc, ddf->conf_rec_len * 512);
4725
4726 vc = (struct vd_config*)mu->buf;
7e1432fb
NB		 4727 for (di = rv ; di ; di = di->next) {
4728 vc->phys_refnum[di->disk.raid_disk] =
4729 ddf->phys->entries[dl->pdnum].refnum;
57a66662 4730 LBA_OFFSET(ddf, vc)[di->disk.raid_disk]
4731 = __cpu_to_be64(di->data_offset);
7e1432fb
NB		 4732 }
4733 *updates = mu;
4734 return rv;
4735}
0e600426 4736#endif /* MDASSEMBLE */
7e1432fb 4737
b640a252
N		 4738static int ddf_level_to_layout(int level)
4739{
4740 switch(level) {
4741 case 0:
4742 case 1:
4743 return 0;
4744 case 5:
4745 return ALGORITHM_LEFT_SYMMETRIC;
4746 case 6:
4747 return ALGORITHM_ROTATING_N_CONTINUE;
4748 case 10:
4749 return 0x102;
4750 default:
4751 return UnSet;
4752 }
4753}
4754
30f58b22
DW		 4755static void default_geometry_ddf(struct supertype *st, int *level, int *layout, int *chunk)
4756{
4757 if (level && *level == UnSet)
4758 *level = LEVEL_CONTAINER;
4759
4760 if (level && layout && *layout == UnSet)
4761 *layout = ddf_level_to_layout(*level);
4762}
4763
a322f70c
DW		 4764struct superswitch super_ddf = {
4765#ifndef MDASSEMBLE
4766 .examine_super = examine_super_ddf,
4767 .brief_examine_super = brief_examine_super_ddf,
4737ae25 4768 .brief_examine_subarrays = brief_examine_subarrays_ddf,
bceedeec 4769 .export_examine_super = export_examine_super_ddf,
a322f70c
DW		 4770 .detail_super = detail_super_ddf,
4771 .brief_detail_super = brief_detail_super_ddf,
4772 .validate_geometry = validate_geometry_ddf,
78e44928 4773 .write_init_super = write_init_super_ddf,
0e600426 4774 .add_to_super = add_to_super_ddf,
4dd968cc 4775 .remove_from_super = remove_from_super_ddf,
2b959fbf 4776 .load_container = load_container_ddf,
74db60b0 4777 .copy_metadata = copy_metadata_ddf,
a322f70c
DW		 4778#endif
4779 .match_home = match_home_ddf,
4780 .uuid_from_super= uuid_from_super_ddf,
4781 .getinfo_super = getinfo_super_ddf,
4782 .update_super = update_super_ddf,
4783
4784 .avail_size = avail_size_ddf,
4785
a19c88b8
NB		 4786 .compare_super = compare_super_ddf,
4787
a322f70c 4788 .load_super = load_super_ddf,
ba7eb04f 4789 .init_super = init_super_ddf,
955e9ea1 4790 .store_super = store_super_ddf,
a322f70c
DW		 4791 .free_super = free_super_ddf,
4792 .match_metadata_desc = match_metadata_desc_ddf,
78e44928 4793 .container_content = container_content_ddf,
30f58b22 4794 .default_geometry = default_geometry_ddf,
f646805e 4795 .kill_subarray = kill_subarray_ddf,
a322f70c 4796
a322f70c 4797 .external = 1,
549e9569 4798
0e600426 4799#ifndef MDASSEMBLE
549e9569
NB		 4800/* for mdmon */
4801 .open_new = ddf_open_new,
ed9d66aa 4802 .set_array_state= ddf_set_array_state,
549e9569
NB		 4803 .set_disk = ddf_set_disk,
4804 .sync_metadata = ddf_sync_metadata,
88c164f4 4805 .process_update = ddf_process_update,
edd8d13c 4806 .prepare_update = ddf_prepare_update,
7e1432fb 4807 .activate_spare = ddf_activate_spare,
0e600426 4808#endif
4cce4069 4809 .name = "ddf",
a322f70c 4810};
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