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64c4757e NB |
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 | extern char short_options[]; | |
53 | extern struct option long_options[]; | |
54 | extern char Version[], Usage[], Help[], Help_create[], Help_build[], Help_assemble[]; | |
55 | ||
56 | /* structures read from config file */ | |
57 | /* List of mddevice names and uuids */ | |
58 | typedef struct mddev_uuid_s { | |
59 | char *devname; | |
60 | __u32 uuid[4]; | |
61 | struct mddev_uuid_s *next; | |
62 | } *mddev_uuid_t; | |
63 | ||
64 | /* List of device names - wildcards expanded */ | |
65 | typedef struct mddev_dev_s { | |
66 | char *devname; | |
67 | struct mddev_dev_s *next; | |
68 | } *mddev_dev_t; | |
69 | ||
70 | /* | |
71 | * RAID5 supported algorithms | |
72 | */ | |
73 | #define ALGORITHM_LEFT_ASYMMETRIC 0 | |
74 | #define ALGORITHM_RIGHT_ASYMMETRIC 1 | |
75 | #define ALGORITHM_LEFT_SYMMETRIC 2 | |
76 | #define ALGORITHM_RIGHT_SYMMETRIC 3 | |
77 | ||
78 | ||
79 | extern int Manage_ro(char *devname, int fd, int readonly); | |
80 | extern int Manage_runstop(char *devname, int fd, int runstop); | |
81 | extern int Manage_subdevs(char *devname, int fd, | |
82 | int devcnt, char *devnames[], int devmodes[]); | |
83 | ||
84 | ||
85 | extern int Assemble(char *mddev, int mdfd, | |
86 | int uuid[4], int uuidset, | |
87 | char *conffile, int scan, | |
88 | int subdevs, char *subdev[], | |
89 | int readonly, int runstop, | |
90 | int verbose, int force); | |
91 | ||
92 | extern int Build(char *mddev, int mdfd, int chunk, int level, | |
93 | int raiddisks, | |
94 | int subdevs, char *subdev[]); | |
95 | ||
96 | ||
97 | extern int Create(char *mddev, int mdfd, | |
98 | int chunk, int level, int layout, int raiddisks, int sparedisks, | |
99 | int subdevs, char *subdev[], | |
100 | int runstop); | |
101 | ||
102 | extern int Detail(char *dev); | |
103 | extern int Examine(char *dev); | |
104 | ||
105 | extern int md_get_version(int fd); | |
106 | extern int get_linux_version(); | |
107 | extern int parse_uuid(char *str, int uuid[4]); | |
108 | ||
109 | extern mddev_uuid_t conf_get_uuids(char *); | |
110 | extern mddev_dev_t conf_get_devs(char *); |