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