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      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 #define GET_BITMAP_FILE		_IOR (MD_MAJOR, 0x15, mdu_bitmap_file_t)
     27 
     28 /* configuration */
     29 #define CLEAR_ARRAY		_IO (MD_MAJOR, 0x20)
     30 #define ADD_NEW_DISK		_IOW (MD_MAJOR, 0x21, mdu_disk_info_t)
     31 #define HOT_REMOVE_DISK		_IO (MD_MAJOR, 0x22)
     32 #define SET_ARRAY_INFO		_IOW (MD_MAJOR, 0x23, mdu_array_info_t)
     33 #define SET_DISK_INFO		_IO (MD_MAJOR, 0x24)
     34 #define WRITE_RAID_INFO		_IO (MD_MAJOR, 0x25)
     35 #define UNPROTECT_ARRAY		_IO (MD_MAJOR, 0x26)
     36 #define PROTECT_ARRAY		_IO (MD_MAJOR, 0x27)
     37 #define HOT_ADD_DISK		_IO (MD_MAJOR, 0x28)
     38 #define SET_DISK_FAULTY		_IO (MD_MAJOR, 0x29)
     39 #define HOT_GENERATE_ERROR	_IO (MD_MAJOR, 0x2a)
     40 #define SET_BITMAP_FILE		_IOW (MD_MAJOR, 0x2b, int)
     41 
     42 /* usage */
     43 #define RUN_ARRAY		_IOW (MD_MAJOR, 0x30, mdu_param_t)
     44 #define START_ARRAY		_IO (MD_MAJOR, 0x31)
     45 #define STOP_ARRAY		_IO (MD_MAJOR, 0x32)
     46 #define STOP_ARRAY_RO		_IO (MD_MAJOR, 0x33)
     47 #define RESTART_ARRAY_RW	_IO (MD_MAJOR, 0x34)
     48 
     49 typedef struct mdu_version_s {
     50 	int major;
     51 	int minor;
     52 	int patchlevel;
     53 } mdu_version_t;
     54 
     55 typedef struct mdu_array_info_s {
     56 	/*
     57 	 * Generic constant information
     58 	 */
     59 	int major_version;
     60 	int minor_version;
     61 	int patch_version;
     62 	int ctime;
     63 	int level;
     64 	int size;
     65 	int nr_disks;
     66 	int raid_disks;
     67 	int md_minor;
     68 	int not_persistent;
     69 
     70 	/*
     71 	 * Generic state information
     72 	 */
     73 	int utime;		/*  0 Superblock update time		      */
     74 	int state;		/*  1 State bits (clean, ...)		      */
     75 	int active_disks;	/*  2 Number of currently active disks	      */
     76 	int working_disks;	/*  3 Number of working disks		      */
     77 	int failed_disks;	/*  4 Number of failed disks		      */
     78 	int spare_disks;	/*  5 Number of spare disks		      */
     79 
     80 	/*
     81 	 * Personality information
     82 	 */
     83 	int layout;		/*  0 the array's physical layout	      */
     84 	int chunk_size;	/*  1 chunk size in bytes		      */
     85 
     86 } mdu_array_info_t;
     87 
     88 typedef struct mdu_disk_info_s {
     89 	/*
     90 	 * configuration/status of one particular disk
     91 	 */
     92 	int number;
     93 	int major;
     94 	int minor;
     95 	int raid_disk;
     96 	int state;
     97 
     98 } mdu_disk_info_t;
     99 
    100 typedef struct mdu_start_info_s {
    101 	/*
    102 	 * configuration/status of one particular disk
    103 	 */
    104 	int major;
    105 	int minor;
    106 	int raid_disk;
    107 	int state;
    108 
    109 } mdu_start_info_t;
    110 
    111 typedef struct mdu_bitmap_file_s
    112 {
    113 	char pathname[4096];
    114 } mdu_bitmap_file_t;
    115 
    116 typedef struct mdu_param_s
    117 {
    118 	int			personality;	/* 1,2,3,4 */
    119 	int			chunk_size;	/* in bytes */
    120 	int			max_fault;	/* unused for now */
    121 } mdu_param_t;
    122 
    123 #endif
    124 
    125