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1 | /* | |
2 | * mdctl - manage Linux "md" devices aka RAID arrays. | |
3 | * | |
4 | * Copyright (C) 2001 Neil Brown <neilb@cse.unsw.edu.au> | |
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> | |
32 | extern __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 | ||
52 | #define Name "mdctl" | |
53 | ||
54 | extern char short_options[]; | |
55 | extern struct option long_options[]; | |
56 | extern char Version[], Usage[], Help[], Help_create[], Help_build[], Help_assemble[]; | |
57 | ||
58 | /* structures read from config file */ | |
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 | */ | |
68 | typedef struct mddev_ident_s { | |
69 | char *devname; | |
70 | ||
71 | int uuid_set; | |
72 | __u32 uuid[4]; | |
73 | ||
74 | int super_minor; /* -1 if not set */ | |
75 | ||
76 | char *devices; /* comma separated list of device | |
77 | * names with wild cards | |
78 | */ | |
79 | ||
80 | char *spare_group; | |
81 | struct mddev_ident_s *next; | |
82 | } *mddev_ident_t; | |
83 | ||
84 | /* List of device names - wildcards expanded */ | |
85 | typedef struct mddev_dev_s { | |
86 | char *devname; | |
87 | struct mddev_dev_s *next; | |
88 | } *mddev_dev_t; | |
89 | ||
90 | typedef struct mapping { | |
91 | char *name; | |
92 | int num; | |
93 | } mapping_t; | |
94 | ||
95 | #ifndef Sendmail | |
96 | #define Sendmail "/usr/lib/sendmail -t" | |
97 | #endif | |
98 | ||
99 | extern char *map_num(mapping_t *map, int num); | |
100 | extern int map_name(mapping_t *map, char *name); | |
101 | extern mapping_t r5layout[], pers[]; | |
102 | ||
103 | extern char *map_dev(int major, int minor); | |
104 | ||
105 | ||
106 | extern int Manage_ro(char *devname, int fd, int readonly); | |
107 | extern int Manage_runstop(char *devname, int fd, int runstop); | |
108 | extern int Manage_subdevs(char *devname, int fd, | |
109 | int devcnt, char *devnames[], int devmodes[]); | |
110 | ||
111 | ||
112 | extern int Assemble(char *mddev, int mdfd, | |
113 | mddev_ident_t ident, | |
114 | char *conffile, | |
115 | int subdevs, char *subdev[], | |
116 | int readonly, int runstop, | |
117 | int verbose, int force); | |
118 | ||
119 | extern int Build(char *mddev, int mdfd, int chunk, int level, | |
120 | int raiddisks, | |
121 | int subdevs, char *subdev[]); | |
122 | ||
123 | ||
124 | extern int Create(char *mddev, int mdfd, | |
125 | int chunk, int level, int layout, int size, int raiddisks, int sparedisks, | |
126 | int subdevs, char *subdev[], | |
127 | int runstop, int verbose, int force); | |
128 | ||
129 | extern int Detail(char *dev); | |
130 | extern int Examine(char *dev); | |
131 | extern int Monitor(int num_devs, char *devlist[], | |
132 | char *mailaddr, char *alert_cmd, | |
133 | int period, | |
134 | char *config); | |
135 | ||
136 | extern int md_get_version(int fd); | |
137 | extern int get_linux_version(); | |
138 | extern int parse_uuid(char *str, int uuid[4]); | |
139 | extern int check_ext2(int fd, char *name); | |
140 | extern int check_reiser(int fd, char *name); | |
141 | extern int check_raid(int fd, char *name); | |
142 | ||
143 | extern mddev_ident_t conf_get_ident(char *, char*); | |
144 | extern mddev_dev_t conf_get_devs(char *); |