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156 lines
4.4 KiB
156 lines
4.4 KiB
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
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/* |
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md_u.h : user <=> kernel API between Linux raidtools and RAID drivers |
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Copyright (C) 1998 Ingo Molnar |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2, or (at your option) |
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any later version. |
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You should have received a copy of the GNU General Public License |
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(for example /usr/src/linux/COPYING); if not, write to the Free |
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Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*/ |
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#ifndef _UAPI_MD_U_H |
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#define _UAPI_MD_U_H |
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/* |
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* Different major versions are not compatible. |
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* Different minor versions are only downward compatible. |
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* Different patchlevel versions are downward and upward compatible. |
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*/ |
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#define MD_MAJOR_VERSION 0 |
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#define MD_MINOR_VERSION 90 |
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/* |
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* MD_PATCHLEVEL_VERSION indicates kernel functionality. |
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* >=1 means different superblock formats are selectable using SET_ARRAY_INFO |
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* and major_version/minor_version accordingly |
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* >=2 means that Internal bitmaps are supported by setting MD_SB_BITMAP_PRESENT |
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* in the super status byte |
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* >=3 means that bitmap superblock version 4 is supported, which uses |
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* little-ending representation rather than host-endian |
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*/ |
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#define MD_PATCHLEVEL_VERSION 3 |
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/* ioctls */ |
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/* status */ |
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#define RAID_VERSION _IOR (MD_MAJOR, 0x10, mdu_version_t) |
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#define GET_ARRAY_INFO _IOR (MD_MAJOR, 0x11, mdu_array_info_t) |
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#define GET_DISK_INFO _IOR (MD_MAJOR, 0x12, mdu_disk_info_t) |
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#define RAID_AUTORUN _IO (MD_MAJOR, 0x14) |
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#define GET_BITMAP_FILE _IOR (MD_MAJOR, 0x15, mdu_bitmap_file_t) |
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/* configuration */ |
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#define CLEAR_ARRAY _IO (MD_MAJOR, 0x20) |
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#define ADD_NEW_DISK _IOW (MD_MAJOR, 0x21, mdu_disk_info_t) |
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#define HOT_REMOVE_DISK _IO (MD_MAJOR, 0x22) |
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#define SET_ARRAY_INFO _IOW (MD_MAJOR, 0x23, mdu_array_info_t) |
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#define SET_DISK_INFO _IO (MD_MAJOR, 0x24) |
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#define WRITE_RAID_INFO _IO (MD_MAJOR, 0x25) |
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#define UNPROTECT_ARRAY _IO (MD_MAJOR, 0x26) |
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#define PROTECT_ARRAY _IO (MD_MAJOR, 0x27) |
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#define HOT_ADD_DISK _IO (MD_MAJOR, 0x28) |
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#define SET_DISK_FAULTY _IO (MD_MAJOR, 0x29) |
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#define HOT_GENERATE_ERROR _IO (MD_MAJOR, 0x2a) |
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#define SET_BITMAP_FILE _IOW (MD_MAJOR, 0x2b, int) |
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/* usage */ |
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#define RUN_ARRAY _IOW (MD_MAJOR, 0x30, mdu_param_t) |
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/* 0x31 was START_ARRAY */ |
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#define STOP_ARRAY _IO (MD_MAJOR, 0x32) |
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#define STOP_ARRAY_RO _IO (MD_MAJOR, 0x33) |
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#define RESTART_ARRAY_RW _IO (MD_MAJOR, 0x34) |
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#define CLUSTERED_DISK_NACK _IO (MD_MAJOR, 0x35) |
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/* 63 partitions with the alternate major number (mdp) */ |
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#define MdpMinorShift 6 |
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typedef struct mdu_version_s { |
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int major; |
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int minor; |
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int patchlevel; |
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} mdu_version_t; |
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typedef struct mdu_array_info_s { |
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/* |
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* Generic constant information |
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*/ |
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int major_version; |
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int minor_version; |
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int patch_version; |
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unsigned int ctime; |
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int level; |
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int size; |
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int nr_disks; |
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int raid_disks; |
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int md_minor; |
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int not_persistent; |
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/* |
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* Generic state information |
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*/ |
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unsigned int utime; /* 0 Superblock update time */ |
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int state; /* 1 State bits (clean, ...) */ |
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int active_disks; /* 2 Number of currently active disks */ |
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int working_disks; /* 3 Number of working disks */ |
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int failed_disks; /* 4 Number of failed disks */ |
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int spare_disks; /* 5 Number of spare disks */ |
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/* |
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* Personality information |
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*/ |
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int layout; /* 0 the array's physical layout */ |
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int chunk_size; /* 1 chunk size in bytes */ |
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} mdu_array_info_t; |
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/* non-obvious values for 'level' */ |
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#define LEVEL_MULTIPATH (-4) |
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#define LEVEL_LINEAR (-1) |
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#define LEVEL_FAULTY (-5) |
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/* we need a value for 'no level specified' and 0 |
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* means 'raid0', so we need something else. This is |
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* for internal use only |
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*/ |
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#define LEVEL_NONE (-1000000) |
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typedef struct mdu_disk_info_s { |
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/* |
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* configuration/status of one particular disk |
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*/ |
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int number; |
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int major; |
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int minor; |
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int raid_disk; |
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int state; |
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} mdu_disk_info_t; |
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typedef struct mdu_start_info_s { |
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/* |
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* configuration/status of one particular disk |
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*/ |
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int major; |
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int minor; |
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int raid_disk; |
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int state; |
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} mdu_start_info_t; |
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typedef struct mdu_bitmap_file_s |
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{ |
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char pathname[4096]; |
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} mdu_bitmap_file_t; |
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typedef struct mdu_param_s |
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{ |
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int personality; /* 1,2,3,4 */ |
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int chunk_size; /* in bytes */ |
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int max_fault; /* unused for now */ |
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} mdu_param_t; |
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#endif /* _UAPI_MD_U_H */
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