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 47typedef struct mdu_version_s { 48 int major; 49 int minor; 50 int patchlevel; 51} mdu_version_t; 52 53typedef 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 86typedef 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 98typedef 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 109typedef 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