FreeBSD/Linux Kernel Cross Reference
sys/dev/vinum/vinumio.h

     /*-
      * Copyright (c) 1997, 1998
      *      Nan Yang Computer Services Limited.  All rights reserved.
      *
      *  This software is distributed under the so-called ``Berkeley
      *  License'':
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Nan Yang Computer
     *      Services Limited.
     * 4. Neither the name of the Company nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * This software is provided ``as is'', and any express or implied
     * warranties, including, but not limited to, the implied warranties of
     * merchantability and fitness for a particular purpose are disclaimed.
     * In no event shall the company or contributors be liable for any
     * direct, indirect, incidental, special, exemplary, or consequential
     * damages (including, but not limited to, procurement of substitute
     * goods or services; loss of use, data, or profits; or business
     * interruption) however caused and on any theory of liability, whether
     * in contract, strict liability, or tort (including negligence or
     * otherwise) arising in any way out of the use of this software, even if
     * advised of the possibility of such damage.
     *
     * $Id: vinumio.h,v 1.1.1.1 2003/10/10 03:08:28 grog Exp $
     * $FreeBSD$
     */
    
    #define L 'F'                                               /* ID letter of our ioctls */
    
    #define MAX_IOCTL_REPLY 1024
    
    #ifdef VINUMDEBUG
    struct debuginfo {
        int changeit;
        int param;
    };
    
    #endif
    
    enum objecttype {
        drive_object,
        sd_object,
        plex_object,
        volume_object,
        invalid_object
    };
    
    /*
     * The state to set with VINUM_SETSTATE.  Since each object has a
     * different set of states, we need to translate later.
     */
    enum objectstate {
        object_down,
        object_initializing,
        object_initialized,
        object_up
    };
    
    /*
     * This structure is used for modifying objects
     * (VINUM_SETSTATE, VINUM_REMOVE, VINUM_RESETSTATS, VINUM_ATTACH,
     * VINUM_DETACH, VINUM_REPLACE
     */
    struct vinum_ioctl_msg {
        int index;
        enum objecttype type;
        enum objectstate state;                                 /* state to set (VINUM_SETSTATE) */
        enum parityop op;                                       /* for parity ops */
        int force;                                              /* do it even if it doesn't make sense */
        int recurse;                                            /* recurse (VINUM_REMOVE) */
        int verify;                                             /* verify (initsd, rebuildparity) */
        int otherobject;                                        /* superordinate object (attach),
                                                                * replacement object (replace) */
        int rename;                                             /* rename object (attach) */
        int64_t offset;                                         /* offset of subdisk (for attach) */
        int blocksize;                                          /* size of block to revive (bytes) */
    };
    
    /* VINUM_CREATE returns a buffer of this kind */
    struct _ioctl_reply {
        int error;
        char msg[MAX_IOCTL_REPLY];
    };
    
    struct vinum_rename_msg {
        int index;
        int recurse;                                            /* rename subordinate objects too */
       enum objecttype type;
       char newname[MAXNAME];                                  /* new name to give to object */
   };
   
   /* ioctl requests */
   #define BUFSIZE 1024                                        /* size of buffer, including continuations */
   #define VINUM_CREATE            _IOC(IOC_IN | IOC_OUT, L, 64, BUFSIZE) /* configure vinum */
   #define VINUM_GETCONFIG         _IOR(L, 65, struct __vinum_conf) /* get global config */
   #define VINUM_DRIVECONFIG       _IOWR(L, 66, struct _drive) /* get drive config */
   #define VINUM_SDCONFIG          _IOWR(L, 67, struct _sd)    /* get subdisk config */
   #define VINUM_PLEXCONFIG        _IOWR(L, 68, struct _plex)  /* get plex config */
   #define VINUM_VOLCONFIG         _IOWR(L, 69, struct _volume) /* get volume config */
   #define VINUM_PLEXSDCONFIG      _IOWR(L, 70, struct _sd)    /* get sd config for plex (plex, sdno) */
   #define VINUM_GETFREELIST       _IOWR(L, 71, struct drive_freelist) /* get freelist element (drive, fe) */
   #define VINUM_SAVECONFIG        _IOW(L, 72, int)            /* write config to disk */
   #define VINUM_RESETCONFIG       _IOC(0, L, 73, 0)           /* trash config on disk */
   #define VINUM_INIT              _IOC(0, L, 74, 0)           /* read config from disk */
   #ifdef VINUMDEBUG
   #define VINUM_DEBUG             _IOWR(L, 75, struct debuginfo) /* call the debugger from ioctl () */
   #endif
   
   /*
    * Start an object.  Pass two integers:
    * msg [0] index in vinum_conf.<object>
    * msg [1] type of object (see below)
    *
    * Return ioctl_reply
    */
   #define VINUM_SETSTATE          _IOC(IOC_IN | IOC_OUT, L, 76, MAX_IOCTL_REPLY) /* start an object */
   #define VINUM_RELEASECONFIG     _IOC(0, L, 77, 0)           /* release locks and write config to disk */
   #define VINUM_STARTCONFIG       _IOW(L, 78, int)            /* start a configuration operation */
   #define VINUM_MEMINFO           _IOR(L, 79, struct meminfo) /* get memory usage summary */
   #define VINUM_MALLOCINFO        _IOWR(L, 80, struct mc)     /* get specific malloc information [i] */
   #define VINUM_LABEL             _IOC(IOC_IN | IOC_OUT, L, 81, MAX_IOCTL_REPLY) /* label a volume */
   #define VINUM_INITSD            _IOW(L, 82, int)            /* initialize a subdisk */
   #define VINUM_REMOVE            _IOWR(L, 83, struct _ioctl_reply) /* remove an object */
   #define VINUM_READPOL           _IOWR(L, 84, struct _ioctl_reply) /* set read policy */
   #define VINUM_SETSTATE_FORCE    _IOC(IOC_IN | IOC_OUT, L, 85, MAX_IOCTL_REPLY) /* diddle object state */
   #define VINUM_RESETSTATS        _IOWR(L, 86, struct _ioctl_reply) /* reset object stats */
   #define VINUM_ATTACH            _IOWR(L, 87, struct _ioctl_reply) /* attach an object */
   #define VINUM_DETACH            _IOWR(L, 88, struct _ioctl_reply) /* remove an object */
   
   #define VINUM_RENAME            _IOWR(L, 89, struct _ioctl_reply) /* rename an object */
   #define VINUM_REPLACE           _IOWR(L, 90, struct _ioctl_reply) /* replace an object */
   
   #ifdef VINUMDEBUG
   #define VINUM_RQINFO            _IOWR(L, 91, struct rqinfo) /* get request info [i] from trace buffer */
   #endif
   
   #define VINUM_DAEMON            _IOC(0, L, 92, 0)           /* perform the kernel part of Vinum daemon */
   #define VINUM_FINDDAEMON        _IOC(0, L, 93, 0)           /* check for presence of Vinum daemon */
   #define VINUM_SETDAEMON         _IOW(L, 94, int)            /* set daemon flags */
   #define VINUM_GETDAEMON         _IOR(L, 95, int)            /* get daemon flags */
   #define VINUM_PARITYOP          _IOWR(L, 96, struct _ioctl_reply) /* check/rebuild RAID-4/5 parity */
   #define VINUM_MOVE              _IOWR(L, 98, struct _ioctl_reply) /* move an object */
   
   /*
    * These defines mirror FreeBSD definitions for conventional partition
    * usage (b for swap, c for the whole disk.  They're used only to fake
    * a "BSD" disk label.  Arguably we shouldn't be doing that.
    */
   #define SWAP_PART 1                                         /* swap partition is normally b */
   #define LABEL_PART 2                                        /* and the whole disk is c */

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