sys/dev/raid/vinum/vinumio.h

   1 /*-
   2  * Copyright (c) 1997, 1998
   3  *      Nan Yang Computer Services Limited.  All rights reserved.
   4  *
   5  *  This software is distributed under the so-called ``Berkeley
   6  *  License'':
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by Nan Yang Computer
  19  *      Services Limited.
  20  * 4. Neither the name of the Company nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * This software is provided ``as is'', and any express or implied
  25  * warranties, including, but not limited to, the implied warranties of
  26  * merchantability and fitness for a particular purpose are disclaimed.
  27  * In no event shall the company or contributors be liable for any
  28  * direct, indirect, incidental, special, exemplary, or consequential
  29  * damages (including, but not limited to, procurement of substitute
  30  * goods or services; loss of use, data, or profits; or business
  31  * interruption) however caused and on any theory of liability, whether
  32  * in contract, strict liability, or tort (including negligence or
  33  * otherwise) arising in any way out of the use of this software, even if
  34  * advised of the possibility of such damage.
  35  *
  36  * $Id: vinumio.h,v 1.19 2000/04/26 04:17:33 grog Exp grog $
  37  * $FreeBSD: src/sys/dev/vinum/vinumio.h,v 1.18.2.1 2000/05/11 08:49:22 grog Exp $
  38  * $DragonFly: src/sys/dev/raid/vinum/vinumio.h,v 1.2 2003/06/17 04:28:33 dillon Exp $
  39  */
  40
  41 #define L 'F'                                               /* ID letter of our ioctls */
  42
  43 #ifdef VINUMDEBUG
  44 #define MAX_IOCTL_REPLY 1024
  45 #else
  46 #define MAX_IOCTL_REPLY 256
  47 #endif
  48
  49 #ifdef VINUMDEBUG
  50 struct debuginfo {
  51     int changeit;
  52     int param;
  53 };
  54
  55 #endif
  56
  57 enum objecttype {
  58     drive_object,
  59     sd_object,
  60     plex_object,
  61     volume_object,
  62     invalid_object
  63 };
  64
  65 /*
  66  * The state to set with VINUM_SETSTATE.  Since each object has a
  67  * different set of states, we need to translate later.
  68  */
  69 enum objectstate {
  70     object_down,
  71     object_initializing,
  72     object_initialized,
  73     object_up
  74 };
  75
  76 /*
  77  * This structure is used for modifying objects
  78  * (VINUM_SETSTATE, VINUM_REMOVE, VINUM_RESETSTATS, VINUM_ATTACH,
  79  * VINUM_DETACH, VINUM_REPLACE
  80  */
  81 struct vinum_ioctl_msg {
  82     int index;
  83     enum objecttype type;
  84     enum objectstate state;                                 /* state to set (VINUM_SETSTATE) */
  85     enum parityop op;                                       /* for parity ops */
  86     int force;                                              /* do it even if it doesn't make sense */
  87     int recurse;                                            /* recurse (VINUM_REMOVE) */
  88     int verify;                                             /* verify (initsd, rebuildparity) */
  89     int otherobject;                                        /* superordinate object (attach),
  90                                                             * replacement object (replace) */
  91     int rename;                                             /* rename object (attach) */
  92     int64_t offset;                                         /* offset of subdisk (for attach) */
  93     int blocksize;                                          /* size of block to revive (bytes) */
  94 };
  95
  96 /* VINUM_CREATE returns a buffer of this kind */
  97 struct _ioctl_reply {
  98     int error;
  99     char msg[MAX_IOCTL_REPLY];
 100 };
 101
 102 struct vinum_rename_msg {
 103     int index;
 104     int recurse;                                            /* rename subordinate objects too */
 105     enum objecttype type;
 106     char newname[MAXNAME];                                  /* new name to give to object */
 107 };
 108
 109 /* ioctl requests */
 110 #define BUFSIZE 1024                                        /* size of buffer, including continuations */
 111 #define VINUM_CREATE            _IOC(IOC_IN | IOC_OUT, L, 64, BUFSIZE) /* configure vinum */
 112 #define VINUM_GETCONFIG         _IOR(L, 65, struct _vinum_conf) /* get global config */
 113 #define VINUM_DRIVECONFIG       _IOWR(L, 66, struct drive)  /* get drive config */
 114 #define VINUM_SDCONFIG          _IOWR(L, 67, struct sd)     /* get subdisk config */
 115 #define VINUM_PLEXCONFIG        _IOWR(L, 68, struct plex)   /* get plex config */
 116 #define VINUM_VOLCONFIG         _IOWR(L, 69, struct volume) /* get volume config */
 117 #define VINUM_PLEXSDCONFIG      _IOWR(L, 70, struct sd)     /* get sd config for plex (plex, sdno) */
 118 #define VINUM_GETFREELIST       _IOWR(L, 71, struct drive_freelist) /* get freelist element (drive, fe) */
 119 #define VINUM_SAVECONFIG        _IOW(L, 72, int)            /* write config to disk */
 120 #define VINUM_RESETCONFIG       _IOC(0, L, 73, 0)           /* trash config on disk */
 121 #define VINUM_INIT              _IOC(0, L, 74, 0)           /* read config from disk */
 122 #ifdef VINUMDEBUG
 123 #define VINUM_DEBUG             _IOWR(L, 75, struct debuginfo) /* call the debugger from ioctl () */
 124 #endif
 125
 126 /*
 127  * Start an object.  Pass two integers:
 128  * msg [0] index in vinum_conf.<object>
 129  * msg [1] type of object (see below)
 130  *
 131  * Return ioctl_reply
 132  */
 133 #define VINUM_SETSTATE          _IOC(IOC_IN | IOC_OUT, L, 76, MAX_IOCTL_REPLY) /* start an object */
 134 #define VINUM_RELEASECONFIG     _IOC(0, L, 77, 0)           /* release locks and write config to disk */
 135 #define VINUM_STARTCONFIG       _IOW(L, 78, int)            /* start a configuration operation */
 136 #define VINUM_MEMINFO           _IOR(L, 79, struct meminfo) /* get memory usage summary */
 137 #define VINUM_MALLOCINFO        _IOWR(L, 80, struct mc)     /* get specific malloc information [i] */
 138 #define VINUM_LABEL             _IOC(IOC_IN | IOC_OUT, L, 81, MAX_IOCTL_REPLY) /* label a volume */
 139 #define VINUM_INITSD            _IOW(L, 82, int)            /* initialize a subdisk */
 140 #define VINUM_REMOVE            _IOWR(L, 83, struct _ioctl_reply) /* remove an object */
 141 #define VINUM_READPOL           _IOWR(L, 84, struct _ioctl_reply) /* set read policy */
 142 #define VINUM_SETSTATE_FORCE    _IOC(IOC_IN | IOC_OUT, L, 85, MAX_IOCTL_REPLY) /* diddle object state */
 143 #define VINUM_RESETSTATS        _IOWR(L, 86, struct _ioctl_reply) /* reset object stats */
 144 #define VINUM_ATTACH            _IOWR(L, 87, struct _ioctl_reply) /* attach an object */
 145 #define VINUM_DETACH            _IOWR(L, 88, struct _ioctl_reply) /* remove an object */
 146
 147 #define VINUM_RENAME            _IOWR(L, 89, struct _ioctl_reply) /* rename an object */
 148 #define VINUM_REPLACE           _IOWR(L, 90, struct _ioctl_reply) /* replace an object */
 149
 150 #ifdef VINUMDEBUG
 151 #define VINUM_RQINFO            _IOWR(L, 91, struct rqinfo) /* get request info [i] from trace buffer */
 152 #endif
 153
 154 #define VINUM_DAEMON            _IOC(0, L, 92, 0)           /* perform the kernel part of Vinum daemon */
 155 #define VINUM_FINDDAEMON        _IOC(0, L, 93, 0)           /* check for presence of Vinum daemon */
 156 #define VINUM_SETDAEMON         _IOW(L, 94, int)            /* set daemon flags */
 157 #define VINUM_GETDAEMON         _IOR(L, 95, int)            /* get daemon flags */
 158 #define VINUM_PARITYOP          _IOWR(L, 96, struct _ioctl_reply) /* check/rebuild RAID-4/5 parity */
 159 #define VINUM_MOVE              _IOWR(L, 98, struct _ioctl_reply) /* move an object */