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 RAID_AUTORUN            _IO (MD_MAJOR, 0x14)
  25 #define GET_BITMAP_FILE         _IOR (MD_MAJOR, 0x15, mdu_bitmap_file_t)
  26
  27 /* configuration */
  28 #define ADD_NEW_DISK            _IOW (MD_MAJOR, 0x21, mdu_disk_info_t)
  29 #define HOT_REMOVE_DISK         _IO (MD_MAJOR, 0x22)
  30 #define SET_ARRAY_INFO          _IOW (MD_MAJOR, 0x23, mdu_array_info_t)
  31 #define SET_DISK_FAULTY         _IO (MD_MAJOR, 0x29)
  32 #define SET_BITMAP_FILE         _IOW (MD_MAJOR, 0x2b, int)
  33
  34 /* usage */
  35 #define RUN_ARRAY               _IOW (MD_MAJOR, 0x30, mdu_param_t)
  36 #define STOP_ARRAY              _IO (MD_MAJOR, 0x32)
  37 #define STOP_ARRAY_RO           _IO (MD_MAJOR, 0x33)
  38 #define RESTART_ARRAY_RW        _IO (MD_MAJOR, 0x34)
  39 #define CLUSTERED_DISK_NACK     _IO (MD_MAJOR, 0x35)
  40
  41 typedef struct mdu_version_s {
  42         int major;
  43         int minor;
  44         int patchlevel;
  45 } mdu_version_t;
  46
  47 typedef struct mdu_array_info_s {
  48         /*
  49          * Generic constant information
  50          */
  51         int major_version;
  52         int minor_version;
  53         int patch_version;
  54         unsigned int ctime;
  55         int level;
  56         int size;
  57         int nr_disks;
  58         int raid_disks;
  59         int md_minor;
  60         int not_persistent;
  61
  62         /*
  63          * Generic state information
  64          */
  65         unsigned int utime;     /*  0 Superblock update time                  */
  66         int state;              /*  1 State bits (clean, ...)                 */
  67         int active_disks;       /*  2 Number of currently active disks        */
  68         int working_disks;      /*  3 Number of working disks                 */
  69         int failed_disks;       /*  4 Number of failed disks                  */
  70         int spare_disks;        /*  5 Number of spare disks                   */
  71
  72         /*
  73          * Personality information
  74          */
  75         int layout;             /*  0 the array's physical layout             */
  76         int chunk_size; /*  1 chunk size in bytes                     */
  77
  78 } mdu_array_info_t;
  79
  80 typedef struct mdu_disk_info_s {
  81         /*
  82          * configuration/status of one particular disk
  83          */
  84         int number;
  85         int major;
  86         int minor;
  87         int raid_disk;
  88         int state;
  89
  90 } mdu_disk_info_t;
  91
  92 typedef struct mdu_start_info_s {
  93         /*
  94          * configuration/status of one particular disk
  95          */
  96         int major;
  97         int minor;
  98         int raid_disk;
  99         int state;
 100
 101 } mdu_start_info_t;
 102
 103 typedef struct mdu_bitmap_file_s
 104 {
 105         char pathname[4096];
 106 } mdu_bitmap_file_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