]>
Commit | Line | Data |
---|---|---|
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 |
64c4757e | 31 | #include <unistd.h> |
98c6faba | 32 | #ifndef __dietlibc__ |
64c4757e | 33 | extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence)); |
98c6faba | 34 | #endif |
64c4757e NB |
35 | |
36 | #include <sys/types.h> | |
37 | #include <sys/stat.h> | |
38 | #include <stdlib.h> | |
39 | #include <time.h> | |
11018a45 | 40 | #include <sys/time.h> |
64c4757e NB |
41 | #include <getopt.h> |
42 | #include <fcntl.h> | |
43 | #include <stdio.h> | |
44 | #include <errno.h> | |
45 | #include <string.h> | |
773135f5 | 46 | #include <syslog.h> |
b56c3630 NB |
47 | #ifdef __dietlibc__ |
48 | #include <strings.h> | |
280a927d NB |
49 | /* dietlibc has deprecated random and srandom!! */ |
50 | #define random rand | |
51 | #define srandom srand | |
98c6faba NB |
52 | #endif |
53 | ||
64c4757e NB |
54 | |
55 | #include <linux/kdev_t.h> | |
e0d19036 NB |
56 | /*#include <linux/fs.h> */ |
57 | #include <sys/mount.h> | |
58 | #include <asm/types.h> | |
64c4757e NB |
59 | #include <sys/ioctl.h> |
60 | #define MD_MAJOR 9 | |
dd0781e5 | 61 | #define MdpMinorShift 6 |
64c4757e | 62 | |
e0d19036 | 63 | #ifndef BLKGETSIZE64 |
98c6faba | 64 | #define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */ |
e0d19036 | 65 | #endif |
56eb10c0 | 66 | |
c82f047c NB |
67 | #define DEFAULT_BITMAP_CHUNK 4096 |
68 | #define DEFAULT_BITMAP_DELAY 5 | |
dfd4d8ee | 69 | #define DEFAULT_MAX_WRITE_BEHIND 256 |
64c4757e NB |
70 | |
71 | #include "md_u.h" | |
e0d19036 | 72 | #include "md_p.h" |
c82f047c | 73 | #include "bitmap.h" |
64c4757e | 74 | |
1e0d770c | 75 | #include <endian.h> |
efd441d1 NB |
76 | /* Redhat don't like to #include <asm/byteorder.h>, and |
77 | * some time include <linux/byteorder/xxx_endian.h> isn't enough, | |
78 | * and there is no standard conversion function so... */ | |
0ae03b8a NB |
79 | /* And dietlibc doesn't think byteswap is ok, so.. */ |
80 | /* #include <byteswap.h> */ | |
81 | #define bswap_16(x) (((x) & 0x00ffU) << 8 | \ | |
82 | ((x) & 0xff00U) >> 8) | |
83 | #define bswap_32(x) (((x) & 0x000000ffU) << 24 | \ | |
84 | ((x) & 0xff000000U) >> 24 | \ | |
85 | ((x) & 0x0000ff00U) << 8 | \ | |
86 | ((x) & 0x00ff0000U) >> 8) | |
87 | #define bswap_64(x) (((x) & 0x00000000000000ffULL) << 56 | \ | |
88 | ((x) & 0xff00000000000000ULL) >> 56 | \ | |
89 | ((x) & 0x000000000000ff00ULL) << 40 | \ | |
90 | ((x) & 0x00ff000000000000ULL) >> 40 | \ | |
91 | ((x) & 0x0000000000ff0000ULL) << 24 | \ | |
92 | ((x) & 0x0000ff0000000000ULL) >> 24 | \ | |
93 | ((x) & 0x00000000ff000000ULL) << 8 | \ | |
94 | ((x) & 0x000000ff00000000ULL) >> 8) | |
95 | ||
efd441d1 NB |
96 | #if BYTE_ORDER == LITTLE_ENDIAN |
97 | #define __cpu_to_le16(_x) (_x) | |
98 | #define __cpu_to_le32(_x) (_x) | |
99 | #define __cpu_to_le64(_x) (_x) | |
100 | #define __le16_to_cpu(_x) (_x) | |
101 | #define __le32_to_cpu(_x) (_x) | |
102 | #define __le64_to_cpu(_x) (_x) | |
103 | #elif BYTE_ORDER == BIG_ENDIAN | |
104 | #define __cpu_to_le16(_x) bswap_16(_x) | |
105 | #define __cpu_to_le32(_x) bswap_32(_x) | |
106 | #define __cpu_to_le64(_x) bswap_64(_x) | |
107 | #define __le16_to_cpu(_x) bswap_16(_x) | |
108 | #define __le32_to_cpu(_x) bswap_32(_x) | |
109 | #define __le64_to_cpu(_x) bswap_64(_x) | |
1e0d770c NB |
110 | #else |
111 | # error "unknown endianness." | |
112 | #endif | |
113 | ||
114 | ||
115 | ||
4b1ac34b NB |
116 | /* general information that might be extracted from a superblock */ |
117 | struct mdinfo { | |
118 | mdu_array_info_t array; | |
119 | mdu_disk_info_t disk; | |
120 | __u64 events; | |
fbf8a0b7 | 121 | int uuid[4]; |
31317663 | 122 | char name[33]; |
353632d9 NB |
123 | unsigned long long data_offset; |
124 | unsigned long long component_size; | |
125 | int reshape_active; | |
126 | unsigned long long reshape_progress; | |
127 | int new_level, delta_disks, new_layout, new_chunk; | |
4b1ac34b NB |
128 | }; |
129 | ||
5bbb4842 NB |
130 | struct createinfo { |
131 | int uid; | |
132 | int gid; | |
133 | int autof; | |
134 | int mode; | |
058574b1 | 135 | struct supertype *supertype; |
5bbb4842 NB |
136 | }; |
137 | ||
9a9dab36 | 138 | #define Name "mdadm" |
682c7051 | 139 | |
e0d19036 NB |
140 | enum mode { |
141 | ASSEMBLE=1, | |
142 | BUILD, | |
143 | CREATE, | |
144 | MANAGE, | |
145 | MISC, | |
146 | MONITOR, | |
dd0781e5 | 147 | GROW, |
e0d19036 NB |
148 | }; |
149 | ||
64c4757e | 150 | extern char short_options[]; |
c06487ce | 151 | extern char short_bitmap_auto_options[]; |
64c4757e | 152 | extern struct option long_options[]; |
56eedc1a | 153 | extern char Version[], Usage[], Help[], OptionHelp[], |
dd0781e5 | 154 | Help_create[], Help_build[], Help_assemble[], Help_grow[], |
e0d19036 | 155 | Help_manage[], Help_misc[], Help_monitor[], Help_config[]; |
64c4757e | 156 | |
997aed5d NB |
157 | /* for option that don't have short equivilents, we assign arbitrary |
158 | * small numbers. '1' means an undecorated option, so we start at '2'. | |
159 | */ | |
160 | enum special_options { | |
161 | AssumeClean = 2, | |
162 | BitmapChunk, | |
163 | WriteBehind, | |
164 | ReAdd, | |
165 | NoDegraded, | |
166 | Sparc22, | |
167 | BackupFile, | |
168 | HomeHost, | |
589395d6 | 169 | AutoHomeHost, |
997aed5d NB |
170 | }; |
171 | ||
64c4757e | 172 | /* structures read from config file */ |
52826846 NB |
173 | /* List of mddevice names and identifiers |
174 | * Identifiers can be: | |
175 | * uuid=128-hex-uuid | |
176 | * super-minor=decimal-minor-number-from-superblock | |
177 | * devices=comma,separated,list,of,device,names,with,wildcards | |
178 | * | |
179 | * If multiple fields are present, the intersection of all matching | |
180 | * devices is considered | |
181 | */ | |
98c6faba | 182 | #define UnSet (0xfffe) |
52826846 | 183 | typedef struct mddev_ident_s { |
dd0781e5 | 184 | char *devname; |
52826846 | 185 | |
dd0781e5 | 186 | int uuid_set; |
3fa06e9d | 187 | int uuid[4]; |
947fd4dd | 188 | char name[33]; |
52826846 | 189 | |
98c6faba | 190 | unsigned int super_minor; |
52826846 | 191 | |
dd0781e5 | 192 | char *devices; /* comma separated list of device |
52826846 NB |
193 | * names with wild cards |
194 | */ | |
dd0781e5 | 195 | int level; |
98c6faba NB |
196 | unsigned int raid_disks; |
197 | unsigned int spare_disks; | |
82d9eba6 | 198 | struct supertype *st; |
dd0781e5 NB |
199 | int autof; /* 1 for normal, 2 for partitioned */ |
200 | char *spare_group; | |
7ef02d01 | 201 | char *bitmap_file; |
c82f047c | 202 | int bitmap_fd; |
dd0781e5 | 203 | |
52826846 NB |
204 | struct mddev_ident_s *next; |
205 | } *mddev_ident_t; | |
64c4757e NB |
206 | |
207 | /* List of device names - wildcards expanded */ | |
208 | typedef struct mddev_dev_s { | |
209 | char *devname; | |
cd29a5c8 NB |
210 | char disposition; /* 'a' for add, 'r' for remove, 'f' for fail. |
211 | * Not set for names read from .config | |
212 | */ | |
dfd4d8ee | 213 | char writemostly; |
fe80f49b | 214 | char re_add; |
811e6cbe | 215 | char used; /* set when used */ |
64c4757e NB |
216 | struct mddev_dev_s *next; |
217 | } *mddev_dev_t; | |
218 | ||
682c7051 NB |
219 | typedef struct mapping { |
220 | char *name; | |
221 | int num; | |
222 | } mapping_t; | |
223 | ||
e0d19036 NB |
224 | |
225 | struct mdstat_ent { | |
226 | char *dev; | |
227 | int devnum; | |
228 | int active; | |
229 | char *level; | |
230 | char *pattern; /* U or up, _ for down */ | |
231 | int percent; /* -1 if no resync */ | |
e5329c37 | 232 | int resync; /* 1 if resync, 0 if recovery */ |
e0d19036 NB |
233 | struct mdstat_ent *next; |
234 | }; | |
235 | ||
22a88995 | 236 | extern struct mdstat_ent *mdstat_read(int hold, int start); |
e0d19036 | 237 | extern void free_mdstat(struct mdstat_ent *ms); |
dd0781e5 | 238 | extern void mdstat_wait(int seconds); |
e0d19036 | 239 | |
e86c9dd6 NB |
240 | /* Data structure for holding info read from sysfs */ |
241 | struct sysdev { | |
242 | char name[20]; | |
243 | int role; | |
244 | int major, minor; | |
245 | unsigned long long offset, size; | |
246 | int state; | |
247 | int errors; | |
248 | struct sysdev *next; | |
249 | }; | |
250 | struct sysarray { | |
251 | char name[20]; | |
252 | struct sysdev *devs; | |
253 | int chunk; | |
254 | unsigned long long component_size; | |
255 | int layout; | |
256 | int level; | |
257 | int spares; | |
258 | }; | |
259 | /* various details can be requested */ | |
260 | #define GET_LEVEL 1 | |
261 | #define GET_LAYOUT 2 | |
262 | #define GET_COMPONENT 4 | |
263 | #define GET_CHUNK 8 | |
264 | ||
265 | #define GET_DEVS 1024 /* gets role, major, minor */ | |
266 | #define GET_OFFSET 2048 | |
267 | #define GET_SIZE 4096 | |
268 | #define GET_STATE 8192 | |
269 | #define GET_ERROR 16384 | |
270 | ||
271 | /* If fd >= 0, get the array it is open on, | |
272 | * else use devnum. >=0 -> major9. <0..... | |
273 | */ | |
274 | extern struct sysarray *sysfs_read(int fd, int devnum, unsigned long options); | |
275 | extern int sysfs_set_str(struct sysarray *sra, struct sysdev *dev, | |
276 | char *name, char *val); | |
277 | extern int sysfs_set_num(struct sysarray *sra, struct sysdev *dev, | |
278 | char *name, unsigned long long val); | |
279 | extern int sysfs_get_ll(struct sysarray *sra, struct sysdev *dev, | |
280 | char *name, unsigned long long *val); | |
281 | ||
282 | ||
283 | extern int save_stripes(int *source, unsigned long long *offsets, | |
284 | int raid_disks, int chunk_size, int level, int layout, | |
285 | int nwrites, int *dest, | |
286 | unsigned long long start, unsigned long long length); | |
353632d9 NB |
287 | extern int restore_stripes(int *dest, unsigned long long *offsets, |
288 | int raid_disks, int chunk_size, int level, int layout, | |
289 | int source, unsigned long long read_offset, | |
290 | unsigned long long start, unsigned long long length); | |
e86c9dd6 | 291 | |
52826846 NB |
292 | #ifndef Sendmail |
293 | #define Sendmail "/usr/lib/sendmail -t" | |
294 | #endif | |
295 | ||
773135f5 NB |
296 | #define SYSLOG_FACILITY LOG_DAEMON |
297 | ||
682c7051 NB |
298 | extern char *map_num(mapping_t *map, int num); |
299 | extern int map_name(mapping_t *map, char *name); | |
b5e64645 | 300 | extern mapping_t r5layout[], pers[], modes[], faultylayout[]; |
682c7051 | 301 | |
16c6fa80 | 302 | extern char *map_dev(int major, int minor, int create); |
64c4757e NB |
303 | |
304 | ||
f9ce90ba | 305 | extern struct superswitch { |
a1cbd7d0 | 306 | void (*examine_super)(void *sbv, char *homehost); |
f9ce90ba | 307 | void (*brief_examine_super)(void *sbv); |
b6750aa8 | 308 | void (*detail_super)(void *sbv, char *homehost); |
f9ce90ba NB |
309 | void (*brief_detail_super)(void *sbv); |
310 | void (*uuid_from_super)(int uuid[4], void *sbv); | |
31317663 | 311 | void (*getinfo_super)(struct mdinfo *info, void *sbv); |
83b6208e | 312 | int (*match_home)(void *sbv, char *homehost); |
e5eac01f NB |
313 | int (*update_super)(struct mdinfo *info, void *sbv, char *update, |
314 | char *devname, int verbose, | |
315 | int uuid_set, char *homehost); | |
f9ce90ba | 316 | __u64 (*event_super)(void *sbv); |
05697ec1 | 317 | int (*init_super)(struct supertype *st, void **sbp, mdu_array_info_t *info, unsigned long long size, char *name, char *homehost); |
f9ce90ba | 318 | void (*add_to_super)(void *sbv, mdu_disk_info_t *dinfo); |
96395475 | 319 | int (*store_super)(struct supertype *st, int fd, void *sbv); |
1bf4e2d9 | 320 | int (*write_init_super)(struct supertype *st, void *sbv, mdu_disk_info_t *dinfo, char *devname); |
f9ce90ba | 321 | int (*compare_super)(void **firstp, void *secondv); |
82d9eba6 NB |
322 | int (*load_super)(struct supertype *st, int fd, void **sbp, char *devname); |
323 | struct supertype * (*match_metadata_desc)(char *arg); | |
1bf4e2d9 | 324 | __u64 (*avail_size)(struct supertype *st, __u64 size); |
f9c25f1d NB |
325 | int (*add_internal_bitmap)(struct supertype *st, void *sbv, int chunk, int delay, int write_behind, |
326 | unsigned long long size, int may_change, int major); | |
f6d75de8 | 327 | void (*locate_bitmap)(struct supertype *st, int fd, void *sbv); |
f5e166fe | 328 | int (*write_bitmap)(struct supertype *st, int fd, void *sbv); |
82d9eba6 | 329 | int major; |
f277ce36 | 330 | int swapuuid; /* true if uuid is bigending rather than hostendian */ |
82d9eba6 NB |
331 | } super0, super1, *superlist[]; |
332 | ||
333 | struct supertype { | |
334 | struct superswitch *ss; | |
335 | int minor_version; | |
ea329559 | 336 | int max_devs; |
82d9eba6 | 337 | }; |
f9ce90ba | 338 | |
82d9eba6 NB |
339 | extern struct supertype *super_by_version(int vers, int minor); |
340 | extern struct supertype *guess_super(int fd); | |
f9ce90ba | 341 | |
838acbc2 NB |
342 | #if __GNUC__ < 3 |
343 | struct stat64; | |
344 | #endif | |
345 | ||
45e878bb NB |
346 | #define HAVE_NFTW we assume |
347 | #define HAVE_FTW | |
348 | ||
173fc515 | 349 | #ifdef UCLIBC |
45e878bb NB |
350 | # include <features.h> |
351 | # ifndef __UCLIBC_HAS_FTW__ | |
352 | # undef HAVE_FTW | |
353 | # undef HAVE_NFTW | |
354 | # endif | |
355 | #endif | |
356 | ||
357 | #ifdef __dietlibc__ | |
358 | # undef HAVE_NFTW | |
359 | #endif | |
360 | ||
361 | #ifndef HAVE_NFTW | |
173fc515 | 362 | # define FTW_PHYS 1 |
45e878bb NB |
363 | # ifndef HAVE_FTW |
364 | struct FTW {}; | |
173fc515 NB |
365 | # endif |
366 | #endif | |
367 | ||
45e878bb NB |
368 | #ifdef HAVE_FTW |
369 | # include <ftw.h> | |
370 | #endif | |
371 | ||
173fc515 NB |
372 | extern int add_dev(const char *name, const struct stat *stb, int flag, struct FTW *s); |
373 | ||
f9ce90ba | 374 | |
64c4757e | 375 | extern int Manage_ro(char *devname, int fd, int readonly); |
91f068bf | 376 | extern int Manage_runstop(char *devname, int fd, int runstop, int quiet); |
dd0781e5 | 377 | extern int Manage_resize(char *devname, int fd, long long size, int raid_disks); |
b5e64645 | 378 | extern int Manage_reconfig(char *devname, int fd, int layout); |
64c4757e | 379 | extern int Manage_subdevs(char *devname, int fd, |
dab6685f | 380 | mddev_dev_t devlist, int verbose); |
e5329c37 | 381 | extern int Grow_Add_device(char *devname, int fd, char *newdev); |
8fac0577 | 382 | extern int Grow_addbitmap(char *devname, int fd, char *file, int chunk, int delay, int write_behind, int force); |
06b0d786 | 383 | extern int Grow_reshape(char *devname, int fd, int quiet, char *backup_file, |
e86c9dd6 NB |
384 | long long size, |
385 | int level, int layout, int chunksize, int raid_disks); | |
06b0d786 NB |
386 | extern int Grow_restart(struct supertype *st, struct mdinfo *info, |
387 | int *fdlist, int cnt, char *backup_file); | |
64c4757e NB |
388 | |
389 | ||
82d9eba6 | 390 | extern int Assemble(struct supertype *st, char *mddev, int mdfd, |
52826846 | 391 | mddev_ident_t ident, |
06b0d786 | 392 | mddev_dev_t devlist, char *backup_file, |
64c4757e | 393 | int readonly, int runstop, |
e5eac01f | 394 | char *update, char *homehost, |
64c4757e NB |
395 | int verbose, int force); |
396 | ||
b5e64645 | 397 | extern int Build(char *mddev, int mdfd, int chunk, int level, int layout, |
64c4757e | 398 | int raiddisks, |
c82f047c | 399 | mddev_dev_t devlist, int assume_clean, |
dab6685f | 400 | char *bitmap_file, int bitmap_chunk, int write_behind, int delay, int verbose); |
64c4757e NB |
401 | |
402 | ||
82d9eba6 | 403 | extern int Create(struct supertype *st, char *mddev, int mdfd, |
5dd497ee | 404 | int chunk, int level, int layout, unsigned long long size, int raiddisks, int sparedisks, |
05697ec1 | 405 | char *name, char *homehost, |
cd29a5c8 | 406 | int subdevs, mddev_dev_t devlist, |
47d79ef8 | 407 | int runstop, int verbose, int force, int assume_clean, |
dfd4d8ee | 408 | char *bitmap_file, int bitmap_chunk, int write_behind, int delay); |
64c4757e | 409 | |
b6750aa8 | 410 | extern int Detail(char *dev, int brief, int test, char *homehost); |
e0d19036 | 411 | extern int Query(char *dev); |
82d9eba6 | 412 | extern int Examine(mddev_dev_t devlist, int brief, int scan, int SparcAdjust, |
a1cbd7d0 | 413 | struct supertype *forcest, char *homehost); |
cd29a5c8 | 414 | extern int Monitor(mddev_dev_t devlist, |
e0d19036 | 415 | char *mailaddr, char *alert_cmd, |
aa88f531 | 416 | int period, int daemonise, int scan, int oneshot, |
8aec876d | 417 | int dosyslog, int test, char *pidfile); |
64c4757e | 418 | |
6409687b | 419 | extern int Kill(char *dev, int force, int quiet); |
9a9dab36 | 420 | |
c82f047c NB |
421 | extern int CreateBitmap(char *filename, int force, char uuid[16], |
422 | unsigned long chunksize, unsigned long daemon_sleep, | |
dfd4d8ee | 423 | unsigned long write_behind, |
dcec9ee5 NB |
424 | unsigned long long array_size, |
425 | int major); | |
55935d51 | 426 | extern int ExamineBitmap(char *filename, int brief, struct supertype *st); |
9fca7d62 | 427 | extern int bitmap_update_uuid(int fd, int *uuid); |
c82f047c | 428 | |
64c4757e | 429 | extern int md_get_version(int fd); |
e0d19036 | 430 | extern int get_linux_version(void); |
64c4757e | 431 | extern int parse_uuid(char *str, int uuid[4]); |
682c7051 NB |
432 | extern int check_ext2(int fd, char *name); |
433 | extern int check_reiser(int fd, char *name); | |
434 | extern int check_raid(int fd, char *name); | |
64c4757e | 435 | |
dd0781e5 | 436 | extern int get_mdp_major(void); |
8b0dabea | 437 | extern int dev_open(char *dev, int flags); |
8d80900b | 438 | extern int is_standard(char *dev, int *nump); |
dd0781e5 | 439 | |
f1ae21c4 | 440 | extern int parse_auto(char *str, char *msg, int config); |
8aec876d NB |
441 | extern mddev_ident_t conf_get_ident(char *dev); |
442 | extern mddev_dev_t conf_get_devs(void); | |
443 | extern struct createinfo *conf_get_create_info(void); | |
444 | extern void set_conffile(char *file); | |
445 | extern char *conf_get_mailaddr(void); | |
446 | extern char *conf_get_mailfrom(void); | |
447 | extern char *conf_get_program(void); | |
448 | extern char *conf_get_homehost(void); | |
e0d19036 | 449 | extern char *conf_line(FILE *file); |
98c6faba | 450 | extern char *conf_word(FILE *file, int allow_key); |
e0d19036 NB |
451 | extern void free_line(char *line); |
452 | extern int match_oneof(char *devices, char *devname); | |
e0d19036 | 453 | extern void uuid_from_super(int uuid[4], mdp_super_t *super); |
f277ce36 | 454 | extern int same_uuid(int a[4], int b[4], int swapuuid); |
4b1ac34b NB |
455 | /* extern int compare_super(mdp_super_t *first, mdp_super_t *second);*/ |
456 | extern unsigned long calc_csum(void *super, int bytes); | |
265e0f17 NB |
457 | extern int enough(int level, int raid_disks, int layout, |
458 | char *avail, int avail_disks); | |
e0d19036 | 459 | extern int ask(char *mesg); |
8fac0577 | 460 | extern unsigned long long get_component_size(int fd); |
e0d19036 | 461 | |
cd29a5c8 | 462 | |
56eb10c0 | 463 | extern char *human_size(long long bytes); |
e0d19036 NB |
464 | char *human_size_brief(long long bytes); |
465 | ||
466 | extern void put_md_name(char *name); | |
467 | extern char *get_md_name(int dev); | |
468 | ||
c913b90e | 469 | extern char DefaultConfFile[]; |
b5e64645 NB |
470 | |
471 | extern int open_mddev(char *dev, int autof); | |
472 | ||
473 | ||
474 | #define LEVEL_MULTIPATH (-4) | |
475 | #define LEVEL_LINEAR (-1) | |
476 | #define LEVEL_FAULTY (-5) | |
477 | ||
478 | ||
479 | /* faulty stuff */ | |
480 | ||
481 | #define WriteTransient 0 | |
482 | #define ReadTransient 1 | |
483 | #define WritePersistent 2 | |
484 | #define ReadPersistent 3 | |
485 | #define WriteAll 4 /* doesn't go to device */ | |
486 | #define ReadFixable 5 | |
487 | #define Modes 6 | |
488 | ||
489 | #define ClearErrors 31 | |
490 | #define ClearFaults 30 | |
491 | ||
492 | #define AllPersist 100 /* internal use only */ | |
493 | #define NoPersist 101 | |
494 | ||
495 | #define ModeMask 0x1f | |
496 | #define ModeShift 5 | |
fe6729fa NB |
497 | |
498 | ||
499 | #ifdef __TINYC__ | |
500 | #undef minor | |
501 | #undef major | |
502 | #undef makedev | |
503 | #define minor(x) ((x)&0xff) | |
504 | #define major(x) (((x)>>8)&0xff) | |
505 | #define makedev(M,m) (((M)<<8) | (m)) | |
506 | #endif | |
507 | ||
e86c9dd6 NB |
508 | /* for raid5 */ |
509 | #define ALGORITHM_LEFT_ASYMMETRIC 0 | |
510 | #define ALGORITHM_RIGHT_ASYMMETRIC 1 | |
511 | #define ALGORITHM_LEFT_SYMMETRIC 2 | |
512 | #define ALGORITHM_RIGHT_SYMMETRIC 3 |