156 lines
4.3 KiB
C
156 lines
4.3 KiB
C
|
/*
|
||
|
|
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.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU General Public License
|
||
|
|
(for example /usr/src/linux/COPYING); if not, write to the Free
|
||
|
|
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#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 PRINT_RAID_DEBUG _IO (MD_MAJOR, 0x13)
|
||
|
|
#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)
|
||
|
|
|
||
|
|
/* 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;
|
||
|
|
int ctime;
|
||
|
|
int level;
|
||
|
|
int size;
|
||
|
|
int nr_disks;
|
||
|
|
int raid_disks;
|
||
|
|
int md_minor;
|
||
|
|
int not_persistent;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Generic state information
|
||
|
|
*/
|
||
|
|
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;
|
||
|
|
|
||
|
|
/* non-obvious values for 'level' */
|
||
|
|
#define LEVEL_MULTIPATH (-4)
|
||
|
|
#define LEVEL_LINEAR (-1)
|
||
|
|
#define LEVEL_FAULTY (-5)
|
||
|
|
|
||
|
|
/* 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 */
|