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 #define GET_BITMAP_FILE         _IOR (MD_MAJOR, 0x15, mdu_bitmap_file_t)
  27
  28 /* configuration */
  29 #define CLEAR_ARRAY             _IO (MD_MAJOR, 0x20)
  30 #define ADD_NEW_DISK            _IOW (MD_MAJOR, 0x21, mdu_disk_info_t)
  31 #define HOT_REMOVE_DISK         _IO (MD_MAJOR, 0x22)
  32 #define SET_ARRAY_INFO          _IOW (MD_MAJOR, 0x23, mdu_array_info_t)
  33 #define SET_DISK_INFO           _IO (MD_MAJOR, 0x24)
  34 #define WRITE_RAID_INFO         _IO (MD_MAJOR, 0x25)
  35 #define UNPROTECT_ARRAY         _IO (MD_MAJOR, 0x26)
  36 #define PROTECT_ARRAY           _IO (MD_MAJOR, 0x27)
  37 #define HOT_ADD_DISK            _IO (MD_MAJOR, 0x28)
  38 #define SET_DISK_FAULTY         _IO (MD_MAJOR, 0x29)
  39 #define HOT_GENERATE_ERROR      _IO (MD_MAJOR, 0x2a)
  40 #define SET_BITMAP_FILE         _IOW (MD_MAJOR, 0x2b, int)
  41
  42 /* usage */
  43 #define RUN_ARRAY               _IOW (MD_MAJOR, 0x30, mdu_param_t)
  44 #define START_ARRAY             _IO (MD_MAJOR, 0x31)
  45 #define STOP_ARRAY              _IO (MD_MAJOR, 0x32)
  46 #define STOP_ARRAY_RO           _IO (MD_MAJOR, 0x33)
  47 #define RESTART_ARRAY_RW        _IO (MD_MAJOR, 0x34)
  48
  49 typedef struct mdu_version_s {
  50         int major;
  51         int minor;
  52         int patchlevel;
  53 } mdu_version_t;
  54
  55 typedef struct mdu_array_info_s {
  56         /*
  57          * Generic constant information
  58          */
  59         int major_version;
  60         int minor_version;
  61         int patch_version;
  62         int ctime;
  63         int level;
  64         int size;
  65         int nr_disks;
  66         int raid_disks;
  67         int md_minor;
  68         int not_persistent;
  69
  70         /*
  71          * Generic state information
  72          */
  73         int utime;              /*  0 Superblock update time                  */
  74         int state;              /*  1 State bits (clean, ...)                 */
  75         int active_disks;       /*  2 Number of currently active disks        */
  76         int working_disks;      /*  3 Number of working disks                 */
  77         int failed_disks;       /*  4 Number of failed disks                  */
  78         int spare_disks;        /*  5 Number of spare disks                   */
  79
  80         /*
  81          * Personality information
  82          */
  83         int layout;             /*  0 the array's physical layout             */
  84         int chunk_size; /*  1 chunk size in bytes                     */
  85
  86 } mdu_array_info_t;
  87
  88 typedef struct mdu_disk_info_s {
  89         /*
  90          * configuration/status of one particular disk
  91          */
  92         int number;
  93         int major;
  94         int minor;
  95         int raid_disk;
  96         int state;
  97
  98 } mdu_disk_info_t;
  99
 100 typedef struct mdu_start_info_s {
 101         /*
 102          * configuration/status of one particular disk
 103          */
 104         int major;
 105         int minor;
 106         int raid_disk;
 107         int state;
 108
 109 } mdu_start_info_t;
 110
 111 typedef struct mdu_bitmap_file_s
 112 {
 113         char pathname[4096];
 114 } mdu_bitmap_file_t;
 115
 116 typedef struct mdu_param_s
 117 {
 118         int                     personality;    /* 1,2,3,4 */
 119         int                     chunk_size;     /* in bytes */
 120         int                     max_fault;      /* unused for now */
 121 } mdu_param_t;
 122
 123 #endif
 124