mdadm-0.7
[thirdparty/mdadm.git] / mdadm.h
CommitLineData
64c4757e 1/*
9a9dab36 2 * mdadm - manage Linux "md" devices aka RAID arrays.
64c4757e 3 *
cd29a5c8 4 * Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
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
30#define __USE_LARGEFILE64
31#include <unistd.h>
32extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence));
33
34#include <sys/types.h>
35#include <sys/stat.h>
36#include <stdlib.h>
37#include <time.h>
38#include <getopt.h>
39#include <fcntl.h>
40#include <stdio.h>
41#include <errno.h>
42#include <string.h>
43
44#include <linux/kdev_t.h>
45#include <linux/fs.h>
46#include <sys/ioctl.h>
47#define MD_MAJOR 9
48
49
50#include "md_u.h"
51
9a9dab36 52#define Name "mdadm"
682c7051 53
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54extern char short_options[];
55extern struct option long_options[];
56extern char Version[], Usage[], Help[], Help_create[], Help_build[], Help_assemble[];
57
58/* structures read from config file */
52826846
NB
59/* List of mddevice names and identifiers
60 * Identifiers can be:
61 * uuid=128-hex-uuid
62 * super-minor=decimal-minor-number-from-superblock
63 * devices=comma,separated,list,of,device,names,with,wildcards
64 *
65 * If multiple fields are present, the intersection of all matching
66 * devices is considered
67 */
68typedef struct mddev_ident_s {
64c4757e 69 char *devname;
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70
71 int uuid_set;
64c4757e 72 __u32 uuid[4];
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73
74 int super_minor; /* -1 if not set */
75
76 char *devices; /* comma separated list of device
77 * names with wild cards
78 */
cd29a5c8
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79 int level; /* -10 if not set */
80 int raid_disks; /* -1 if not set */
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81 char *spare_group;
82 struct mddev_ident_s *next;
83} *mddev_ident_t;
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84
85/* List of device names - wildcards expanded */
86typedef struct mddev_dev_s {
87 char *devname;
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88 char disposition; /* 'a' for add, 'r' for remove, 'f' for fail.
89 * Not set for names read from .config
90 */
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91 struct mddev_dev_s *next;
92} *mddev_dev_t;
93
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94typedef struct mapping {
95 char *name;
96 int num;
97} mapping_t;
98
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99#ifndef Sendmail
100#define Sendmail "/usr/lib/sendmail -t"
101#endif
102
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103extern char *map_num(mapping_t *map, int num);
104extern int map_name(mapping_t *map, char *name);
105extern mapping_t r5layout[], pers[];
106
82b27616 107extern char *map_dev(int major, int minor);
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108
109
110extern int Manage_ro(char *devname, int fd, int readonly);
111extern int Manage_runstop(char *devname, int fd, int runstop);
112extern int Manage_subdevs(char *devname, int fd,
cd29a5c8 113 mddev_dev_t devlist);
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114
115
116extern int Assemble(char *mddev, int mdfd,
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117 mddev_ident_t ident,
118 char *conffile,
cd29a5c8 119 mddev_dev_t devlist,
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120 int readonly, int runstop,
121 int verbose, int force);
122
123extern int Build(char *mddev, int mdfd, int chunk, int level,
124 int raiddisks,
cd29a5c8 125 mddev_dev_t devlist);
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126
127
128extern int Create(char *mddev, int mdfd,
682c7051 129 int chunk, int level, int layout, int size, int raiddisks, int sparedisks,
cd29a5c8 130 int subdevs, mddev_dev_t devlist,
52826846 131 int runstop, int verbose, int force);
64c4757e 132
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133extern int Detail(char *dev, int brief);
134extern int Examine(mddev_dev_t devlist, int brief, char *conffile);
135extern int Monitor(mddev_dev_t devlist,
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136 char *mailaddr, char *alert_cmd,
137 int period,
138 char *config);
64c4757e 139
9a9dab36
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140extern int Kill(char *dev, int force);
141
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142extern int md_get_version(int fd);
143extern int get_linux_version();
144extern int parse_uuid(char *str, int uuid[4]);
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145extern int check_ext2(int fd, char *name);
146extern int check_reiser(int fd, char *name);
147extern int check_raid(int fd, char *name);
64c4757e 148
52826846 149extern mddev_ident_t conf_get_ident(char *, char*);
64c4757e 150extern mddev_dev_t conf_get_devs(char *);
cd29a5c8
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151
152extern char *human_size(long kbytes);