8ffac9562e
Add ioctl VINUM_READCONFIG which implements both the "read" and "start" commands in vinum(8).
156 lines
6.6 KiB
C
156 lines
6.6 KiB
C
/*-
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* Copyright (c) 1997, 1998
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* Nan Yang Computer Services Limited. All rights reserved.
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*
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* This software is distributed under the so-called ``Berkeley
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* License'':
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Nan Yang Computer
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* Services Limited.
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* 4. Neither the name of the Company nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* This software is provided ``as is'', and any express or implied
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* warranties, including, but not limited to, the implied warranties of
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* merchantability and fitness for a particular purpose are disclaimed.
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* In no event shall the company or contributors be liable for any
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* direct, indirect, incidental, special, exemplary, or consequential
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* damages (including, but not limited to, procurement of substitute
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* goods or services; loss of use, data, or profits; or business
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* interruption) however caused and on any theory of liability, whether
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* in contract, strict liability, or tort (including negligence or
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* otherwise) arising in any way out of the use of this software, even if
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* advised of the possibility of such damage.
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*
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* $Id: vinumio.h,v 1.22 2003/04/24 07:36:09 grog Exp $
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* $FreeBSD$
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*/
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#define L 'F' /* ID letter of our ioctls */
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#define MAX_IOCTL_REPLY 1024
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#ifdef VINUMDEBUG
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struct debuginfo {
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int changeit;
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int param;
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};
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#endif
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enum objecttype {
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drive_object,
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sd_object,
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plex_object,
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volume_object,
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invalid_object
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};
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/*
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* The state to set with VINUM_SETSTATE. Since each object has a
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* different set of states, we need to translate later.
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*/
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enum objectstate {
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object_down,
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object_initializing,
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object_initialized,
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object_up
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};
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/*
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* This structure is used for modifying objects
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* (VINUM_SETSTATE, VINUM_REMOVE, VINUM_RESETSTATS, VINUM_ATTACH,
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* VINUM_DETACH, VINUM_REPLACE
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*/
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struct vinum_ioctl_msg {
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int index;
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enum objecttype type;
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enum objectstate state; /* state to set (VINUM_SETSTATE) */
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enum parityop op; /* for parity ops */
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int force; /* do it even if it doesn't make sense */
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int recurse; /* recurse (VINUM_REMOVE) */
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int verify; /* verify (initsd, rebuildparity) */
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int otherobject; /* superordinate object (attach),
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* replacement object (replace) */
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int rename; /* rename object (attach) */
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int64_t offset; /* offset of subdisk (for attach) */
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int blocksize; /* size of block to revive (bytes) */
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};
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/* VINUM_CREATE returns a buffer of this kind */
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struct _ioctl_reply {
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int error;
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char msg[MAX_IOCTL_REPLY];
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};
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struct vinum_rename_msg {
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int index;
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int recurse; /* rename subordinate objects too */
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enum objecttype type;
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char newname[MAXNAME]; /* new name to give to object */
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};
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/* ioctl requests */
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#define BUFSIZE 1024 /* size of buffer, including continuations */
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#define VINUM_CREATE _IOC(IOC_IN | IOC_OUT, L, 64, BUFSIZE) /* configure vinum */
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#define VINUM_GETCONFIG _IOR(L, 65, struct __vinum_conf) /* get global config */
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#define VINUM_DRIVECONFIG _IOWR(L, 66, struct _drive) /* get drive config */
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#define VINUM_SDCONFIG _IOWR(L, 67, struct _sd) /* get subdisk config */
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#define VINUM_PLEXCONFIG _IOWR(L, 68, struct _plex) /* get plex config */
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#define VINUM_VOLCONFIG _IOWR(L, 69, struct _volume) /* get volume config */
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#define VINUM_PLEXSDCONFIG _IOWR(L, 70, struct _sd) /* get sd config for plex (plex, sdno) */
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#define VINUM_GETFREELIST _IOWR(L, 71, struct drive_freelist) /* get freelist element (drive, fe) */
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#define VINUM_SAVECONFIG _IOW(L, 72, int) /* write config to disk */
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#define VINUM_RESETCONFIG _IOC(0, L, 73, 0) /* trash config on disk */
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#define VINUM_INIT _IOC(0, L, 74, 0) /* read config from disk */
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#define VINUM_READCONFIG _IOC(IOC_IN | IOC_OUT, L, 75, BUFSIZE) /* read config from disk */
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#ifdef VINUMDEBUG
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#define VINUM_DEBUG _IOWR(L, 127, struct debuginfo) /* call the debugger from ioctl () */
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#endif
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/*
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* Start an object. Pass two integers:
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* msg [0] index in vinum_conf.<object>
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* msg [1] type of object (see below)
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*
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* Return ioctl_reply
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*/
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#define VINUM_SETSTATE _IOC(IOC_IN | IOC_OUT, L, 76, MAX_IOCTL_REPLY) /* start an object */
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#define VINUM_RELEASECONFIG _IOC(0, L, 77, 0) /* release locks and write config to disk */
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#define VINUM_STARTCONFIG _IOW(L, 78, int) /* start a configuration operation */
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#define VINUM_MEMINFO _IOR(L, 79, struct meminfo) /* get memory usage summary */
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#define VINUM_MALLOCINFO _IOWR(L, 80, struct mc) /* get specific malloc information [i] */
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#define VINUM_LABEL _IOC(IOC_IN | IOC_OUT, L, 81, MAX_IOCTL_REPLY) /* label a volume */
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#define VINUM_INITSD _IOW(L, 82, int) /* initialize a subdisk */
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#define VINUM_REMOVE _IOWR(L, 83, struct _ioctl_reply) /* remove an object */
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#define VINUM_READPOL _IOWR(L, 84, struct _ioctl_reply) /* set read policy */
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#define VINUM_SETSTATE_FORCE _IOC(IOC_IN | IOC_OUT, L, 85, MAX_IOCTL_REPLY) /* diddle object state */
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#define VINUM_RESETSTATS _IOWR(L, 86, struct _ioctl_reply) /* reset object stats */
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#define VINUM_ATTACH _IOWR(L, 87, struct _ioctl_reply) /* attach an object */
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#define VINUM_DETACH _IOWR(L, 88, struct _ioctl_reply) /* remove an object */
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#define VINUM_RENAME _IOWR(L, 89, struct _ioctl_reply) /* rename an object */
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#define VINUM_REPLACE _IOWR(L, 90, struct _ioctl_reply) /* replace an object */
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#ifdef VINUMDEBUG
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#define VINUM_RQINFO _IOWR(L, 91, struct rqinfo) /* get request info [i] from trace buffer */
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#endif
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#define VINUM_DAEMON _IOC(0, L, 92, 0) /* perform the kernel part of Vinum daemon */
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#define VINUM_FINDDAEMON _IOC(0, L, 93, 0) /* check for presence of Vinum daemon */
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#define VINUM_SETDAEMON _IOW(L, 94, int) /* set daemon flags */
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#define VINUM_GETDAEMON _IOR(L, 95, int) /* get daemon flags */
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#define VINUM_PARITYOP _IOWR(L, 96, struct _ioctl_reply) /* check/rebuild RAID-4/5 parity */
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#define VINUM_MOVE _IOWR(L, 98, struct _ioctl_reply) /* move an object */
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