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Compiled tree of Oasis Linux based on own branch at <https://hacktivis.me/git/oasis/> git clone https://anongit.hacktivis.me/git/oasis-root.git

md_u.h (4147B)

    

  1. /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
  2. /*
  3.    md_u.h : user <=> kernel API between Linux raidtools and RAID drivers
  4.           Copyright (C) 1998 Ingo Molnar
  6.    This program is free software; you can redistribute it and/or modify
  7.    it under the terms of the GNU General Public License as published by
  8.    the Free Software Foundation; either version 2, or (at your option)
  9.    any later version.
  10. */
  12. #ifndef _MD_U_H
  13. #define _MD_U_H
  15. /*
  16.  * Different major versions are not compatible.
  17.  * Different minor versions are only downward compatible.
  18.  * Different patchlevel versions are downward and upward compatible.
  19.  */
  20. #define MD_MAJOR_VERSION                0
  21. #define MD_MINOR_VERSION                90
  22. /*
  23.  * MD_PATCHLEVEL_VERSION indicates kernel functionality.
  24.  * >=1 means different superblock formats are selectable using SET_ARRAY_INFO
  25.  *     and major_version/minor_version accordingly
  26.  * >=2 means that Internal bitmaps are supported by setting MD_SB_BITMAP_PRESENT
  27.  *     in the super status byte
  28.  * >=3 means that bitmap superblock version 4 is supported, which uses
  29.  *     little-ending representation rather than host-endian
  30.  */
  31. #define MD_PATCHLEVEL_VERSION           3
  33. /* ioctls */
  35. /* status */
  36. #define RAID_VERSION		_IOR (MD_MAJOR, 0x10, mdu_version_t)
  37. #define GET_ARRAY_INFO		_IOR (MD_MAJOR, 0x11, mdu_array_info_t)
  38. #define GET_DISK_INFO		_IOR (MD_MAJOR, 0x12, mdu_disk_info_t)
  39. #define RAID_AUTORUN		_IO (MD_MAJOR, 0x14)
  40. #define GET_BITMAP_FILE		_IOR (MD_MAJOR, 0x15, mdu_bitmap_file_t)
  42. /* configuration */
  43. #define CLEAR_ARRAY		_IO (MD_MAJOR, 0x20)
  44. #define ADD_NEW_DISK		_IOW (MD_MAJOR, 0x21, mdu_disk_info_t)
  45. #define HOT_REMOVE_DISK		_IO (MD_MAJOR, 0x22)
  46. #define SET_ARRAY_INFO		_IOW (MD_MAJOR, 0x23, mdu_array_info_t)
  47. #define SET_DISK_INFO		_IO (MD_MAJOR, 0x24)
  48. #define WRITE_RAID_INFO		_IO (MD_MAJOR, 0x25)
  49. #define UNPROTECT_ARRAY		_IO (MD_MAJOR, 0x26)
  50. #define PROTECT_ARRAY		_IO (MD_MAJOR, 0x27)
  51. #define HOT_ADD_DISK		_IO (MD_MAJOR, 0x28)
  52. #define SET_DISK_FAULTY		_IO (MD_MAJOR, 0x29)
  53. #define HOT_GENERATE_ERROR	_IO (MD_MAJOR, 0x2a)
  54. #define SET_BITMAP_FILE		_IOW (MD_MAJOR, 0x2b, int)
  56. /* usage */
  57. #define RUN_ARRAY		_IOW (MD_MAJOR, 0x30, mdu_param_t)
  58. /*  0x31 was START_ARRAY  */
  59. #define STOP_ARRAY		_IO (MD_MAJOR, 0x32)
  60. #define STOP_ARRAY_RO		_IO (MD_MAJOR, 0x33)
  61. #define RESTART_ARRAY_RW	_IO (MD_MAJOR, 0x34)
  62. #define CLUSTERED_DISK_NACK	_IO (MD_MAJOR, 0x35)
  64. /* 63 partitions with the alternate major number (mdp) */
  65. #define MdpMinorShift 6
  67. typedef struct mdu_version_s {
  68. 	int major;
  69. 	int minor;
  70. 	int patchlevel;
  71. } mdu_version_t;
  73. typedef struct mdu_array_info_s {
  74. 	/*
  75. 	 * Generic constant information
  76. 	 */
  77. 	int major_version;
  78. 	int minor_version;
  79. 	int patch_version;
  80. 	unsigned int ctime;
  81. 	int level;
  82. 	int size;
  83. 	int nr_disks;
  84. 	int raid_disks;
  85. 	int md_minor;
  86. 	int not_persistent;
  88. 	/*
  89. 	 * Generic state information
  90. 	 */
  91. 	unsigned int utime;	/*  0 Superblock update time		      */
  92. 	int state;		/*  1 State bits (clean, ...)		      */
  93. 	int active_disks;	/*  2 Number of currently active disks	      */
  94. 	int working_disks;	/*  3 Number of working disks		      */
  95. 	int failed_disks;	/*  4 Number of failed disks		      */
  96. 	int spare_disks;	/*  5 Number of spare disks		      */
  98. 	/*
  99. 	 * Personality information
  100. 	 */
  101. 	int layout;		/*  0 the array's physical layout	      */
  102. 	int chunk_size;	/*  1 chunk size in bytes		      */
  104. } mdu_array_info_t;
  106. /* we need a value for 'no level specified' and 0
  107.  * means 'raid0', so we need something else.  This is
  108.  * for internal use only
  109.  */
  110. #define	LEVEL_NONE		(-1000000)
  112. typedef struct mdu_disk_info_s {
  113. 	/*
  114. 	 * configuration/status of one particular disk
  115. 	 */
  116. 	int number;
  117. 	int major;
  118. 	int minor;
  119. 	int raid_disk;
  120. 	int state;
  122. } mdu_disk_info_t;
  124. typedef struct mdu_start_info_s {
  125. 	/*
  126. 	 * configuration/status of one particular disk
  127. 	 */
  128. 	int major;
  129. 	int minor;
  130. 	int raid_disk;
  131. 	int state;
  133. } mdu_start_info_t;
  135. typedef struct mdu_bitmap_file_s
  136. {
  137. 	char pathname[4096];
  138. } mdu_bitmap_file_t;
  140. typedef struct mdu_param_s
  141. {
  142. 	int			personality;	/* 1,2,3,4 */
  143. 	int			chunk_size;	/* in bytes */
  144. 	int			max_fault;	/* unused for now */
  145. } mdu_param_t;
  147. #endif /* _MD_U_H */