File: /usr/include/linux/raid/md_u.h
1 /*
2 md_u.h : user <=> kernel API between Linux raidtools and RAID drivers
3 Copyright (C) 1998 Ingo Molnar
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
8 any later version.
9
10 You should have received a copy of the GNU General Public License
11 (for example /usr/src/linux/COPYING); if not, write to the Free
12 Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
13 */
14
15 #ifndef _MD_U_H
16 #define _MD_U_H
17
18 /* ioctls */
19
20 /* status */
21 #define RAID_VERSION _IOR (MD_MAJOR, 0x10, mdu_version_t)
22 #define GET_ARRAY_INFO _IOR (MD_MAJOR, 0x11, mdu_array_info_t)
23 #define GET_DISK_INFO _IOR (MD_MAJOR, 0x12, mdu_disk_info_t)
24 #define PRINT_RAID_DEBUG _IO (MD_MAJOR, 0x13)
25 #define RAID_AUTORUN _IO (MD_MAJOR, 0x14)
26
27 /* configuration */
28 #define CLEAR_ARRAY _IO (MD_MAJOR, 0x20)
29 #define ADD_NEW_DISK _IOW (MD_MAJOR, 0x21, mdu_disk_info_t)
30 #define HOT_REMOVE_DISK _IO (MD_MAJOR, 0x22)
31 #define SET_ARRAY_INFO _IOW (MD_MAJOR, 0x23, mdu_array_info_t)
32 #define SET_DISK_INFO _IO (MD_MAJOR, 0x24)
33 #define WRITE_RAID_INFO _IO (MD_MAJOR, 0x25)
34 #define UNPROTECT_ARRAY _IO (MD_MAJOR, 0x26)
35 #define PROTECT_ARRAY _IO (MD_MAJOR, 0x27)
36 #define HOT_ADD_DISK _IO (MD_MAJOR, 0x28)
37 #define SET_DISK_FAULTY _IO (MD_MAJOR, 0x29)
38 #define HOT_GENERATE_ERROR _IO (MD_MAJOR, 0x2a)
39
40 /* usage */
41 #define RUN_ARRAY _IOW (MD_MAJOR, 0x30, mdu_param_t)
42 #define START_ARRAY _IO (MD_MAJOR, 0x31)
43 #define STOP_ARRAY _IO (MD_MAJOR, 0x32)
44 #define STOP_ARRAY_RO _IO (MD_MAJOR, 0x33)
45 #define RESTART_ARRAY_RW _IO (MD_MAJOR, 0x34)
46
47 typedef struct mdu_version_s {
48 int major;
49 int minor;
50 int patchlevel;
51 } mdu_version_t;
52
53 typedef struct mdu_array_info_s {
54 /*
55 * Generic constant information
56 */
57 int major_version;
58 int minor_version;
59 int patch_version;
60 int ctime;
61 int level;
62 int size;
63 int nr_disks;
64 int raid_disks;
65 int md_minor;
66 int not_persistent;
67
68 /*
69 * Generic state information
70 */
71 int utime; /* 0 Superblock update time */
72 int state; /* 1 State bits (clean, ...) */
73 int active_disks; /* 2 Number of currently active disks */
74 int working_disks; /* 3 Number of working disks */
75 int failed_disks; /* 4 Number of failed disks */
76 int spare_disks; /* 5 Number of spare disks */
77
78 /*
79 * Personality information
80 */
81 int layout; /* 0 the array's physical layout */
82 int chunk_size; /* 1 chunk size in bytes */
83
84 } mdu_array_info_t;
85
86 typedef struct mdu_disk_info_s {
87 /*
88 * configuration/status of one particular disk
89 */
90 int number;
91 int major;
92 int minor;
93 int raid_disk;
94 int state;
95
96 } mdu_disk_info_t;
97
98 typedef struct mdu_start_info_s {
99 /*
100 * configuration/status of one particular disk
101 */
102 int major;
103 int minor;
104 int raid_disk;
105 int state;
106
107 } mdu_start_info_t;
108
109 typedef struct mdu_param_s
110 {
111 int personality; /* 1,2,3,4 */
112 int chunk_size; /* in bytes */
113 int max_fault; /* unused for now */
114 } mdu_param_t;
115
116 #endif
117
118