handle Manage_subdevs() for 'external' arrays
[thirdparty/mdadm.git] / mdadm.h
CommitLineData
64c4757e 1/*
9a9dab36 2 * mdadm - manage Linux "md" devices aka RAID arrays.
64c4757e 3 *
4f589ad0 4 * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de>
64c4757e
NB
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: <neilb@cse.unsw.edu.au>
23 * Paper: Neil Brown
24 * School of Computer Science and Engineering
25 * The University of New South Wales
26 * Sydney, 2052
27 * Australia
28 */
29
4ccdb956 30#define _GNU_SOURCE
c2c9bb6f 31#define _FILE_OFFSET_BITS 64
64c4757e 32#include <unistd.h>
e39b673e 33#if !defined(__dietlibc__) && !defined(__KLIBC__)
64c4757e 34extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence));
f783ca4f 35#else
fffdbe5e 36# if defined(__NO_STAT64) || __WORDSIZE != 32
f783ca4f
NB
37# define lseek64 lseek
38# endif
98c6faba 39#endif
64c4757e
NB
40
41#include <sys/types.h>
42#include <sys/stat.h>
43#include <stdlib.h>
44#include <time.h>
11018a45 45#include <sys/time.h>
64c4757e
NB
46#include <getopt.h>
47#include <fcntl.h>
48#include <stdio.h>
49#include <errno.h>
50#include <string.h>
773135f5 51#include <syslog.h>
b56c3630
NB
52#ifdef __dietlibc__
53#include <strings.h>
280a927d
NB
54/* dietlibc has deprecated random and srandom!! */
55#define random rand
56#define srandom srand
98c6faba
NB
57#endif
58
64c4757e
NB
59
60#include <linux/kdev_t.h>
e0d19036
NB
61/*#include <linux/fs.h> */
62#include <sys/mount.h>
63#include <asm/types.h>
64c4757e
NB
64#include <sys/ioctl.h>
65#define MD_MAJOR 9
dd0781e5 66#define MdpMinorShift 6
64c4757e 67
e0d19036 68#ifndef BLKGETSIZE64
98c6faba 69#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */
e0d19036 70#endif
56eb10c0 71
c82f047c
NB
72#define DEFAULT_BITMAP_CHUNK 4096
73#define DEFAULT_BITMAP_DELAY 5
dfd4d8ee 74#define DEFAULT_MAX_WRITE_BEHIND 256
64c4757e
NB
75
76#include "md_u.h"
e0d19036 77#include "md_p.h"
c82f047c 78#include "bitmap.h"
f7dd881f 79#include "msg.h"
64c4757e 80
1e0d770c 81#include <endian.h>
efd441d1
NB
82/* Redhat don't like to #include <asm/byteorder.h>, and
83 * some time include <linux/byteorder/xxx_endian.h> isn't enough,
84 * and there is no standard conversion function so... */
0ae03b8a
NB
85/* And dietlibc doesn't think byteswap is ok, so.. */
86/* #include <byteswap.h> */
87#define bswap_16(x) (((x) & 0x00ffU) << 8 | \
88 ((x) & 0xff00U) >> 8)
89#define bswap_32(x) (((x) & 0x000000ffU) << 24 | \
90 ((x) & 0xff000000U) >> 24 | \
91 ((x) & 0x0000ff00U) << 8 | \
92 ((x) & 0x00ff0000U) >> 8)
93#define bswap_64(x) (((x) & 0x00000000000000ffULL) << 56 | \
94 ((x) & 0xff00000000000000ULL) >> 56 | \
95 ((x) & 0x000000000000ff00ULL) << 40 | \
96 ((x) & 0x00ff000000000000ULL) >> 40 | \
97 ((x) & 0x0000000000ff0000ULL) << 24 | \
98 ((x) & 0x0000ff0000000000ULL) >> 24 | \
99 ((x) & 0x00000000ff000000ULL) << 8 | \
100 ((x) & 0x000000ff00000000ULL) >> 8)
101
e39b673e 102#if !defined(__KLIBC__)
efd441d1
NB
103#if BYTE_ORDER == LITTLE_ENDIAN
104#define __cpu_to_le16(_x) (_x)
105#define __cpu_to_le32(_x) (_x)
106#define __cpu_to_le64(_x) (_x)
107#define __le16_to_cpu(_x) (_x)
108#define __le32_to_cpu(_x) (_x)
109#define __le64_to_cpu(_x) (_x)
974e620d
NB
110
111#define __cpu_to_be16(_x) bswap_16(_x)
112#define __cpu_to_be32(_x) bswap_32(_x)
113#define __cpu_to_be64(_x) bswap_64(_x)
114#define __be16_to_cpu(_x) bswap_16(_x)
115#define __be32_to_cpu(_x) bswap_32(_x)
116#define __be64_to_cpu(_x) bswap_64(_x)
efd441d1
NB
117#elif BYTE_ORDER == BIG_ENDIAN
118#define __cpu_to_le16(_x) bswap_16(_x)
119#define __cpu_to_le32(_x) bswap_32(_x)
120#define __cpu_to_le64(_x) bswap_64(_x)
121#define __le16_to_cpu(_x) bswap_16(_x)
122#define __le32_to_cpu(_x) bswap_32(_x)
123#define __le64_to_cpu(_x) bswap_64(_x)
974e620d
NB
124
125#define __cpu_to_be16(_x) (_x)
126#define __cpu_to_be32(_x) (_x)
127#define __cpu_to_be64(_x) (_x)
128#define __be16_to_cpu(_x) (_x)
129#define __be32_to_cpu(_x) (_x)
130#define __be64_to_cpu(_x) (_x)
1e0d770c
NB
131#else
132# error "unknown endianness."
133#endif
e39b673e 134#endif /* __KLIBC__ */
1e0d770c
NB
135
136
137
4b1ac34b
NB
138/* general information that might be extracted from a superblock */
139struct mdinfo {
140 mdu_array_info_t array;
141 mdu_disk_info_t disk;
142 __u64 events;
fbf8a0b7 143 int uuid[4];
31317663 144 char name[33];
353632d9 145 unsigned long long data_offset;
598f0d58
NB
146 unsigned long long component_size; /* same as array.size, except in
147 * sectors and up to 64bits.
148 */
353632d9
NB
149 int reshape_active;
150 unsigned long long reshape_progress;
0fd5c350 151 unsigned long long resync_start;
353632d9 152 int new_level, delta_disks, new_layout, new_chunk;
06c7f68e 153 int errors;
7e0f6979
NB
154 int cache_size; /* size of raid456 stripe cache*/
155 int mismatch_cnt;
156 char text_version[50];
5f2aace8 157 int container_member; /* for assembling external-metatdata arrays */
06c7f68e
NB
158
159 char sys_name[20];
7e0f6979 160 struct mdinfo *devs;
06c7f68e 161 struct mdinfo *next;
4b1ac34b
NB
162};
163
5bbb4842
NB
164struct createinfo {
165 int uid;
166 int gid;
167 int autof;
168 int mode;
38098016 169 int symlinks;
058574b1 170 struct supertype *supertype;
5bbb4842
NB
171};
172
9a9dab36 173#define Name "mdadm"
682c7051 174
e0d19036
NB
175enum mode {
176 ASSEMBLE=1,
177 BUILD,
178 CREATE,
179 MANAGE,
180 MISC,
181 MONITOR,
dd0781e5 182 GROW,
8382f19b 183 INCREMENTAL,
1f48664b 184 AUTODETECT,
e0d19036
NB
185};
186
64c4757e 187extern char short_options[];
024768c4 188extern char short_bitmap_options[];
c06487ce 189extern char short_bitmap_auto_options[];
64c4757e 190extern struct option long_options[];
56eedc1a 191extern char Version[], Usage[], Help[], OptionHelp[],
dd0781e5 192 Help_create[], Help_build[], Help_assemble[], Help_grow[],
8382f19b 193 Help_incr[],
e0d19036 194 Help_manage[], Help_misc[], Help_monitor[], Help_config[];
64c4757e 195
997aed5d
NB
196/* for option that don't have short equivilents, we assign arbitrary
197 * small numbers. '1' means an undecorated option, so we start at '2'.
198 */
199enum special_options {
200 AssumeClean = 2,
201 BitmapChunk,
202 WriteBehind,
203 ReAdd,
204 NoDegraded,
205 Sparc22,
206 BackupFile,
207 HomeHost,
589395d6 208 AutoHomeHost,
38098016 209 Symlinks,
1f48664b 210 AutoDetect,
997aed5d
NB
211};
212
64c4757e 213/* structures read from config file */
52826846
NB
214/* List of mddevice names and identifiers
215 * Identifiers can be:
216 * uuid=128-hex-uuid
217 * super-minor=decimal-minor-number-from-superblock
218 * devices=comma,separated,list,of,device,names,with,wildcards
219 *
220 * If multiple fields are present, the intersection of all matching
221 * devices is considered
222 */
98c6faba 223#define UnSet (0xfffe)
52826846 224typedef struct mddev_ident_s {
dd0781e5 225 char *devname;
aba69144 226
dd0781e5 227 int uuid_set;
3fa06e9d 228 int uuid[4];
947fd4dd 229 char name[33];
52826846 230
98c6faba 231 unsigned int super_minor;
52826846 232
dd0781e5 233 char *devices; /* comma separated list of device
52826846
NB
234 * names with wild cards
235 */
dd0781e5 236 int level;
98c6faba
NB
237 unsigned int raid_disks;
238 unsigned int spare_disks;
82d9eba6 239 struct supertype *st;
dd0781e5
NB
240 int autof; /* 1 for normal, 2 for partitioned */
241 char *spare_group;
7ef02d01 242 char *bitmap_file;
c82f047c 243 int bitmap_fd;
dd0781e5 244
52826846
NB
245 struct mddev_ident_s *next;
246} *mddev_ident_t;
64c4757e
NB
247
248/* List of device names - wildcards expanded */
249typedef struct mddev_dev_s {
250 char *devname;
cd29a5c8
NB
251 char disposition; /* 'a' for add, 'r' for remove, 'f' for fail.
252 * Not set for names read from .config
253 */
dfd4d8ee 254 char writemostly;
fe80f49b 255 char re_add;
811e6cbe 256 char used; /* set when used */
64c4757e
NB
257 struct mddev_dev_s *next;
258} *mddev_dev_t;
259
682c7051
NB
260typedef struct mapping {
261 char *name;
262 int num;
263} mapping_t;
264
e0d19036
NB
265
266struct mdstat_ent {
267 char *dev;
268 int devnum;
269 int active;
270 char *level;
271 char *pattern; /* U or up, _ for down */
272 int percent; /* -1 if no resync */
e5329c37 273 int resync; /* 1 if resync, 0 if recovery */
e0d19036
NB
274 struct mdstat_ent *next;
275};
276
22a88995 277extern struct mdstat_ent *mdstat_read(int hold, int start);
e0d19036 278extern void free_mdstat(struct mdstat_ent *ms);
dd0781e5 279extern void mdstat_wait(int seconds);
8382f19b
NB
280extern int mddev_busy(int devnum);
281
282struct map_ent {
283 struct map_ent *next;
284 int devnum;
285 int major,minor;
286 int uuid[4];
287 char *path;
288};
289extern int map_update(struct map_ent **mpp, int devnum, int major, int minor,
290 int uuid[4], char *path);
291extern struct map_ent *map_by_uuid(struct map_ent **map, int uuid[4]);
292extern void map_read(struct map_ent **melp);
293extern int map_write(struct map_ent *mel);
294extern void map_delete(struct map_ent **mapp, int devnum);
295extern void map_free(struct map_ent *map);
296extern void map_add(struct map_ent **melp,
297 int devnum, int major, int minor, int uuid[4], char *path);
e0d19036 298
e86c9dd6
NB
299/* various details can be requested */
300#define GET_LEVEL 1
301#define GET_LAYOUT 2
302#define GET_COMPONENT 4
303#define GET_CHUNK 8
758d3a8e 304#define GET_CACHE 16
37dfc3d6 305#define GET_MISMATCH 32
8382f19b 306#define GET_VERSION 64
e86c9dd6
NB
307
308#define GET_DEVS 1024 /* gets role, major, minor */
309#define GET_OFFSET 2048
310#define GET_SIZE 4096
311#define GET_STATE 8192
312#define GET_ERROR 16384
313
314/* If fd >= 0, get the array it is open on,
315 * else use devnum. >=0 -> major9. <0.....
316 */
7e0f6979
NB
317extern void sysfs_free(struct mdinfo *sra);
318extern struct mdinfo *sysfs_read(int fd, int devnum, unsigned long options);
319extern int sysfs_set_str(struct mdinfo *sra, struct mdinfo *dev,
e86c9dd6 320 char *name, char *val);
7e0f6979 321extern int sysfs_set_num(struct mdinfo *sra, struct mdinfo *dev,
e86c9dd6 322 char *name, unsigned long long val);
7e0f6979 323extern int sysfs_get_ll(struct mdinfo *sra, struct mdinfo *dev,
e86c9dd6 324 char *name, unsigned long long *val);
2503d23b 325extern int sysfs_set_array(struct mdinfo *sra,
598f0d58 326 struct mdinfo *info);
2503d23b
NB
327extern int sysfs_add_disk(struct mdinfo *sra, int fd, struct mdinfo *sd);
328
329
e86c9dd6
NB
330
331
332extern int save_stripes(int *source, unsigned long long *offsets,
333 int raid_disks, int chunk_size, int level, int layout,
334 int nwrites, int *dest,
335 unsigned long long start, unsigned long long length);
353632d9
NB
336extern int restore_stripes(int *dest, unsigned long long *offsets,
337 int raid_disks, int chunk_size, int level, int layout,
338 int source, unsigned long long read_offset,
339 unsigned long long start, unsigned long long length);
e86c9dd6 340
52826846
NB
341#ifndef Sendmail
342#define Sendmail "/usr/lib/sendmail -t"
343#endif
344
773135f5
NB
345#define SYSLOG_FACILITY LOG_DAEMON
346
682c7051
NB
347extern char *map_num(mapping_t *map, int num);
348extern int map_name(mapping_t *map, char *name);
b5e64645 349extern mapping_t r5layout[], pers[], modes[], faultylayout[];
682c7051 350
16c6fa80 351extern char *map_dev(int major, int minor, int create);
64c4757e
NB
352
353
f9ce90ba 354extern struct superswitch {
3da92f27
NB
355 void (*examine_super)(struct supertype *st, char *homehost);
356 void (*brief_examine_super)(struct supertype *st);
0d726f17 357 void (*export_examine_super)(struct supertype *st);
3da92f27 358 void (*detail_super)(struct supertype *st, char *homehost);
3da92f27 359 void (*brief_detail_super)(struct supertype *st);
0d726f17 360 void (*export_detail_super)(struct supertype *st);
3da92f27
NB
361 void (*uuid_from_super)(struct supertype *st, int uuid[4]);
362 void (*getinfo_super)(struct supertype *st, struct mdinfo *info);
598f0d58 363 void (*getinfo_super_n)(struct supertype *st, struct mdinfo *info);
3da92f27 364 int (*match_home)(struct supertype *st, char *homehost);
68c7d6d7 365 int (*update_super)(struct supertype *st, struct mdinfo *info,
3da92f27 366 char *update,
e5eac01f
NB
367 char *devname, int verbose,
368 int uuid_set, char *homehost);
3da92f27
NB
369 int (*init_super)(struct supertype *st, mdu_array_info_t *info,
370 unsigned long long size, char *name,
371 char *homehost, int *uuid);
111d01fc
NB
372 void (*add_to_super)(struct supertype *st, mdu_disk_info_t *dinfo,
373 int fd, char *devname);
3da92f27 374 int (*store_super)(struct supertype *st, int fd);
111d01fc 375 int (*write_init_super)(struct supertype *st);
64557c33 376 int (*compare_super)(struct supertype *st, struct supertype *tst);
3da92f27 377 int (*load_super)(struct supertype *st, int fd, char *devname);
82d9eba6 378 struct supertype * (*match_metadata_desc)(char *arg);
1bf4e2d9 379 __u64 (*avail_size)(struct supertype *st, __u64 size);
3da92f27 380 int (*add_internal_bitmap)(struct supertype *st, int *chunkp,
199171a2 381 int delay, int write_behind,
f9c25f1d 382 unsigned long long size, int may_change, int major);
3da92f27
NB
383 void (*locate_bitmap)(struct supertype *st, int fd);
384 int (*write_bitmap)(struct supertype *st, int fd);
385 void (*free_super)(struct supertype *st);
17f25ca6
NB
386 int (*validate_geometry)(struct supertype *st, int level, int layout,
387 int raiddisks,
388 int chunk, unsigned long long size,
389 char *subdev, unsigned long long *freesize);
598f0d58
NB
390
391 struct mdinfo *(*container_content)(struct supertype *st);
392
82d9eba6 393 int major;
d03373f1 394 char *text_version;
f277ce36 395 int swapuuid; /* true if uuid is bigending rather than hostendian */
d03373f1 396 int external;
a322f70c 397} super0, super1, super_ddf, super_ddf_bvd, super_ddf_svd, *superlist[];
82d9eba6 398
cdddbdbc
DW
399extern struct superswitch super_imsm, super_imsm_raid;
400
82d9eba6
NB
401struct supertype {
402 struct superswitch *ss;
403 int minor_version;
ea329559 404 int max_devs;
2f6079dc
NB
405 int container_dev; /* devnum of container */
406 int container_member; /* numerical position in container */
64557c33 407 void *sb;
111d01fc 408 void *info;
82d9eba6 409};
f9ce90ba 410
f7dd881f 411extern struct supertype supertype_container_member;
1686dc25 412extern struct supertype *super_by_fd(int fd);
82d9eba6 413extern struct supertype *guess_super(int fd);
3da92f27 414extern struct supertype *dup_super(struct supertype *st);
beae1dfe 415extern int get_dev_size(int fd, char *dname, unsigned long long *sizep);
8382f19b
NB
416extern void get_one_disk(int mdfd, mdu_array_info_t *ainf,
417 mdu_disk_info_t *disk);
f9ce90ba 418
838acbc2
NB
419#if __GNUC__ < 3
420struct stat64;
421#endif
422
45e878bb
NB
423#define HAVE_NFTW we assume
424#define HAVE_FTW
425
173fc515 426#ifdef UCLIBC
45e878bb
NB
427# include <features.h>
428# ifndef __UCLIBC_HAS_FTW__
429# undef HAVE_FTW
430# undef HAVE_NFTW
431# endif
432#endif
433
434#ifdef __dietlibc__
435# undef HAVE_NFTW
436#endif
437
e39b673e 438#if defined(__KLIBC__)
439# undef HAVE_NFTW
440# undef HAVE_FTW
441#endif
442
45e878bb 443#ifndef HAVE_NFTW
173fc515 444# define FTW_PHYS 1
45e878bb
NB
445# ifndef HAVE_FTW
446 struct FTW {};
173fc515
NB
447# endif
448#endif
449
45e878bb
NB
450#ifdef HAVE_FTW
451# include <ftw.h>
452#endif
453
173fc515
NB
454extern int add_dev(const char *name, const struct stat *stb, int flag, struct FTW *s);
455
f9ce90ba 456
64c4757e 457extern int Manage_ro(char *devname, int fd, int readonly);
91f068bf 458extern int Manage_runstop(char *devname, int fd, int runstop, int quiet);
dd0781e5 459extern int Manage_resize(char *devname, int fd, long long size, int raid_disks);
b5e64645 460extern int Manage_reconfig(char *devname, int fd, int layout);
64c4757e 461extern int Manage_subdevs(char *devname, int fd,
dab6685f 462 mddev_dev_t devlist, int verbose);
1f48664b 463extern int autodetect(void);
e5329c37 464extern int Grow_Add_device(char *devname, int fd, char *newdev);
8fac0577 465extern int Grow_addbitmap(char *devname, int fd, char *file, int chunk, int delay, int write_behind, int force);
06b0d786 466extern int Grow_reshape(char *devname, int fd, int quiet, char *backup_file,
e86c9dd6
NB
467 long long size,
468 int level, int layout, int chunksize, int raid_disks);
06b0d786
NB
469extern int Grow_restart(struct supertype *st, struct mdinfo *info,
470 int *fdlist, int cnt, char *backup_file);
64c4757e
NB
471
472
82d9eba6 473extern int Assemble(struct supertype *st, char *mddev, int mdfd,
52826846 474 mddev_ident_t ident,
06b0d786 475 mddev_dev_t devlist, char *backup_file,
64c4757e 476 int readonly, int runstop,
e5eac01f 477 char *update, char *homehost,
64c4757e
NB
478 int verbose, int force);
479
b5e64645 480extern int Build(char *mddev, int mdfd, int chunk, int level, int layout,
64c4757e 481 int raiddisks,
c82f047c 482 mddev_dev_t devlist, int assume_clean,
dab6685f 483 char *bitmap_file, int bitmap_chunk, int write_behind, int delay, int verbose);
64c4757e
NB
484
485
82d9eba6 486extern int Create(struct supertype *st, char *mddev, int mdfd,
5dd497ee 487 int chunk, int level, int layout, unsigned long long size, int raiddisks, int sparedisks,
3d3dd91e 488 char *name, char *homehost, int *uuid,
cd29a5c8 489 int subdevs, mddev_dev_t devlist,
47d79ef8 490 int runstop, int verbose, int force, int assume_clean,
dfd4d8ee 491 char *bitmap_file, int bitmap_chunk, int write_behind, int delay);
64c4757e 492
54bad364 493extern int Detail(char *dev, int brief, int export, int test, char *homehost);
e0d19036 494extern int Query(char *dev);
0d726f17
KS
495extern int Examine(mddev_dev_t devlist, int brief, int export, int scan,
496 int SparcAdjust, struct supertype *forcest, char *homehost);
cd29a5c8 497extern int Monitor(mddev_dev_t devlist,
e0d19036 498 char *mailaddr, char *alert_cmd,
aa88f531 499 int period, int daemonise, int scan, int oneshot,
8aec876d 500 int dosyslog, int test, char *pidfile);
64c4757e 501
111d01fc 502extern int Kill(char *dev, int force, int quiet, int noexcl);
b90c0e9a 503extern int Wait(char *dev);
9a9dab36 504
8382f19b
NB
505extern int Incremental(char *devname, int verbose, int runstop,
506 struct supertype *st, char *homehost, int autof);
598f0d58
NB
507extern int Incremental_container(struct supertype *st, char *devname,
508 int verbose, int runstop, int autof);
8382f19b
NB
509extern void RebuildMap(void);
510extern int IncrementalScan(int verbose);
511
c82f047c
NB
512extern int CreateBitmap(char *filename, int force, char uuid[16],
513 unsigned long chunksize, unsigned long daemon_sleep,
dfd4d8ee 514 unsigned long write_behind,
dcec9ee5
NB
515 unsigned long long array_size,
516 int major);
55935d51 517extern int ExamineBitmap(char *filename, int brief, struct supertype *st);
bf4fb153 518extern int bitmap_update_uuid(int fd, int *uuid, int swap);
c82f047c 519
64c4757e 520extern int md_get_version(int fd);
e0d19036 521extern int get_linux_version(void);
64c4757e 522extern int parse_uuid(char *str, int uuid[4]);
682c7051
NB
523extern int check_ext2(int fd, char *name);
524extern int check_reiser(int fd, char *name);
525extern int check_raid(int fd, char *name);
64c4757e 526
dd0781e5 527extern int get_mdp_major(void);
8b0dabea 528extern int dev_open(char *dev, int flags);
8d80900b 529extern int is_standard(char *dev, int *nump);
dd0781e5 530
f1ae21c4 531extern int parse_auto(char *str, char *msg, int config);
8aec876d
NB
532extern mddev_ident_t conf_get_ident(char *dev);
533extern mddev_dev_t conf_get_devs(void);
8382f19b 534extern int conf_test_dev(char *devname);
8aec876d
NB
535extern struct createinfo *conf_get_create_info(void);
536extern void set_conffile(char *file);
537extern char *conf_get_mailaddr(void);
538extern char *conf_get_mailfrom(void);
539extern char *conf_get_program(void);
540extern char *conf_get_homehost(void);
e0d19036 541extern char *conf_line(FILE *file);
98c6faba 542extern char *conf_word(FILE *file, int allow_key);
e0d19036
NB
543extern void free_line(char *line);
544extern int match_oneof(char *devices, char *devname);
e0d19036 545extern void uuid_from_super(int uuid[4], mdp_super_t *super);
f277ce36 546extern int same_uuid(int a[4], int b[4], int swapuuid);
350f29f9 547extern void copy_uuid(void *a, int b[4], int swapuuid);
4b1ac34b 548extern unsigned long calc_csum(void *super, int bytes);
583315d9 549extern int enough(int level, int raid_disks, int layout, int clean,
265e0f17 550 char *avail, int avail_disks);
e0d19036 551extern int ask(char *mesg);
8fac0577 552extern unsigned long long get_component_size(int fd);
0430ed48 553extern void remove_partitions(int fd);
5f8097be
NB
554extern unsigned long long calc_array_size(int level, int raid_disks, int layout,
555 int chunksize, unsigned long long devsize);
e0d19036 556
cd29a5c8 557
56eb10c0 558extern char *human_size(long long bytes);
e0d19036
NB
559char *human_size_brief(long long bytes);
560
63152c1b
NB
561#define NoMdDev (1<<23)
562extern int find_free_devnum(int use_partitions);
563
e0d19036
NB
564extern void put_md_name(char *name);
565extern char *get_md_name(int dev);
566
c913b90e 567extern char DefaultConfFile[];
b5e64645
NB
568
569extern int open_mddev(char *dev, int autof);
8382f19b 570extern int open_mddev_devnum(char *devname, int devnum, char *name,
9a02c62a 571 char *chosen_name, int parts);
a322f70c 572extern int open_container(int fd);
b5e64645 573
2f6079dc
NB
574extern char *devnum2devname(int num);
575extern int fd2devnum(int fd);
b5e64645
NB
576
577#define LEVEL_MULTIPATH (-4)
578#define LEVEL_LINEAR (-1)
579#define LEVEL_FAULTY (-5)
580
17f25ca6
NB
581/* kernel module doesn't know about these */
582#define LEVEL_CONTAINER (-100)
a322f70c 583#define LEVEL_UNSUPPORTED (-200)
17f25ca6 584
b5e64645
NB
585
586/* faulty stuff */
587
588#define WriteTransient 0
589#define ReadTransient 1
590#define WritePersistent 2
591#define ReadPersistent 3
592#define WriteAll 4 /* doesn't go to device */
593#define ReadFixable 5
594#define Modes 6
595
596#define ClearErrors 31
597#define ClearFaults 30
598
599#define AllPersist 100 /* internal use only */
600#define NoPersist 101
601
602#define ModeMask 0x1f
603#define ModeShift 5
fe6729fa
NB
604
605
606#ifdef __TINYC__
607#undef minor
608#undef major
609#undef makedev
610#define minor(x) ((x)&0xff)
611#define major(x) (((x)>>8)&0xff)
612#define makedev(M,m) (((M)<<8) | (m))
613#endif
614
e86c9dd6
NB
615/* for raid5 */
616#define ALGORITHM_LEFT_ASYMMETRIC 0
617#define ALGORITHM_RIGHT_ASYMMETRIC 1
618#define ALGORITHM_LEFT_SYMMETRIC 2
619#define ALGORITHM_RIGHT_SYMMETRIC 3