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
  39 /* usage */
  40 #define RUN_ARRAY               _IOW (MD_MAJOR, 0x30, mdu_param_t)
  41 #define START_ARRAY             _IO (MD_MAJOR, 0x31)
  42 #define STOP_ARRAY              _IO (MD_MAJOR, 0x32)
  43 #define STOP_ARRAY_RO           _IO (MD_MAJOR, 0x33)
  44 #define RESTART_ARRAY_RW        _IO (MD_MAJOR, 0x34)
  45
  46 typedef struct mdu_version_s {
  47         int major;
  48         int minor;
  49         int patchlevel;
  50 } mdu_version_t;
  51
  52 typedef struct mdu_array_info_s {
  53         /*
  54          * Generic constant information
  55          */
  56         int major_version;
  57         int minor_version;
  58         int patch_version;
  59         int ctime;
  60         int level;
  61         int size;
  62         int nr_disks;
  63         int raid_disks;
  64         int md_minor;
  65         int not_persistent;
  66
  67         /*
  68          * Generic state information
  69          */
  70         int utime;              /*  0 Superblock update time                  */
  71         int state;              /*  1 State bits (clean, ...)                 */
  72         int active_disks;       /*  2 Number of currently active disks        */
  73         int working_disks;      /*  3 Number of working disks                 */
  74         int failed_disks;       /*  4 Number of failed disks                  */
  75         int spare_disks;        /*  5 Number of spare disks                   */
  76
  77         /*
  78          * Personality information
  79          */
  80         int layout;             /*  0 the array's physical layout             */
  81         int chunk_size; /*  1 chunk size in bytes                     */
  82
  83 } mdu_array_info_t;
  84
  85 typedef struct mdu_disk_info_s {
  86         /*
  87          * configuration/status of one particular disk
  88          */
  89         int number;
  90         int major;
  91         int minor;
  92         int raid_disk;
  93         int state;
  94
  95 } mdu_disk_info_t;
  96
  97 typedef struct mdu_start_info_s {
  98         /*
  99          * configuration/status of one particular disk
 100          */
 101         int major;
 102         int minor;
 103         int raid_disk;
 104         int state;
 105
 106 } mdu_start_info_t;
 107
 108 typedef struct mdu_param_s
 109 {
 110         int                     personality;    /* 1,2,3,4 */
 111         int                     chunk_size;     /* in bytes */
 112         int                     max_fault;      /* unused for now */
 113 } mdu_param_t;
 114
 115 #endif
 116