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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note *//* md_u.h : user <=> kernel API between Linux raidtools and RAID drivers Copyright (C) 1998 Ingo Molnar
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version.*/
#ifndef _UAPI_MD_U_H#define _UAPI_MD_U_H
/* * Different major versions are not compatible. * Different minor versions are only downward compatible. * Different patchlevel versions are downward and upward compatible. */#define MD_MAJOR_VERSION 0#define MD_MINOR_VERSION 90/* * MD_PATCHLEVEL_VERSION indicates kernel functionality. * >=1 means different superblock formats are selectable using SET_ARRAY_INFO * and major_version/minor_version accordingly * >=2 means that Internal bitmaps are supported by setting MD_SB_BITMAP_PRESENT * in the super status byte * >=3 means that bitmap superblock version 4 is supported, which uses * little-ending representation rather than host-endian */#define MD_PATCHLEVEL_VERSION 3
/* ioctls */
/* status */#define RAID_VERSION _IOR (MD_MAJOR, 0x10, mdu_version_t)#define GET_ARRAY_INFO _IOR (MD_MAJOR, 0x11, mdu_array_info_t)#define GET_DISK_INFO _IOR (MD_MAJOR, 0x12, mdu_disk_info_t)#define RAID_AUTORUN _IO (MD_MAJOR, 0x14)#define GET_BITMAP_FILE _IOR (MD_MAJOR, 0x15, mdu_bitmap_file_t)
/* configuration */#define CLEAR_ARRAY _IO (MD_MAJOR, 0x20)#define ADD_NEW_DISK _IOW (MD_MAJOR, 0x21, mdu_disk_info_t)#define HOT_REMOVE_DISK _IO (MD_MAJOR, 0x22)#define SET_ARRAY_INFO _IOW (MD_MAJOR, 0x23, mdu_array_info_t)#define SET_DISK_INFO _IO (MD_MAJOR, 0x24)#define WRITE_RAID_INFO _IO (MD_MAJOR, 0x25)#define UNPROTECT_ARRAY _IO (MD_MAJOR, 0x26)#define PROTECT_ARRAY _IO (MD_MAJOR, 0x27)#define HOT_ADD_DISK _IO (MD_MAJOR, 0x28)#define SET_DISK_FAULTY _IO (MD_MAJOR, 0x29)#define HOT_GENERATE_ERROR _IO (MD_MAJOR, 0x2a)#define SET_BITMAP_FILE _IOW (MD_MAJOR, 0x2b, int)
/* usage */#define RUN_ARRAY _IOW (MD_MAJOR, 0x30, mdu_param_t)/* 0x31 was START_ARRAY */#define STOP_ARRAY _IO (MD_MAJOR, 0x32)#define STOP_ARRAY_RO _IO (MD_MAJOR, 0x33)#define RESTART_ARRAY_RW _IO (MD_MAJOR, 0x34)#define CLUSTERED_DISK_NACK _IO (MD_MAJOR, 0x35)
/* 63 partitions with the alternate major number (mdp) */#define MdpMinorShift 6
typedef struct mdu_version_s { int major; int minor; int patchlevel;} mdu_version_t;
typedef struct mdu_array_info_s { /* * Generic constant information */ int major_version; int minor_version; int patch_version; unsigned int ctime; int level; int size; int nr_disks; int raid_disks; int md_minor; int not_persistent;
/* * Generic state information */ unsigned int utime; /* 0 Superblock update time */ int state; /* 1 State bits (clean, ...) */ int active_disks; /* 2 Number of currently active disks */ int working_disks; /* 3 Number of working disks */ int failed_disks; /* 4 Number of failed disks */ int spare_disks; /* 5 Number of spare disks */
/* * Personality information */ int layout; /* 0 the array's physical layout */ int chunk_size; /* 1 chunk size in bytes */
} mdu_array_info_t;
#define LEVEL_LINEAR (-1)
/* we need a value for 'no level specified' and 0 * means 'raid0', so we need something else. This is * for internal use only */#define LEVEL_NONE (-1000000)
typedef struct mdu_disk_info_s { /* * configuration/status of one particular disk */ int number; int major; int minor; int raid_disk; int state;
} mdu_disk_info_t;
typedef struct mdu_start_info_s { /* * configuration/status of one particular disk */ int major; int minor; int raid_disk; int state;
} mdu_start_info_t;
typedef struct mdu_bitmap_file_s{ char pathname[4096];} mdu_bitmap_file_t;
typedef struct mdu_param_s{ int personality; /* 1,2,3,4 */ int chunk_size; /* in bytes */ int max_fault; /* unused for now */} mdu_param_t;
#endif /* _UAPI_MD_U_H */