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Annotation of XNU/bsd/sys/dmap.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
                      3:  *
                      4:  * @APPLE_LICENSE_HEADER_START@
                      5:  * 
                      6:  * The contents of this file constitute Original Code as defined in and
                      7:  * are subject to the Apple Public Source License Version 1.1 (the
                      8:  * "License").  You may not use this file except in compliance with the
                      9:  * License.  Please obtain a copy of the License at
                     10:  * http://www.apple.com/publicsource and read it before using this file.
                     11:  * 
                     12:  * This Original Code and all software distributed under the License are
                     13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
                     14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
                     15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
                     16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
                     17:  * License for the specific language governing rights and limitations
                     18:  * under the License.
                     19:  * 
                     20:  * @APPLE_LICENSE_HEADER_END@
                     21:  */
                     22: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
                     23: /*-
                     24:  * Copyright (c) 1982, 1986, 1993
                     25:  *     The Regents of the University of California.  All rights reserved.
                     26:  *
                     27:  * Redistribution and use in source and binary forms, with or without
                     28:  * modification, are permitted provided that the following conditions
                     29:  * are met:
                     30:  * 1. Redistributions of source code must retain the above copyright
                     31:  *    notice, this list of conditions and the following disclaimer.
                     32:  * 2. Redistributions in binary form must reproduce the above copyright
                     33:  *    notice, this list of conditions and the following disclaimer in the
                     34:  *    documentation and/or other materials provided with the distribution.
                     35:  * 3. All advertising materials mentioning features or use of this software
                     36:  *    must display the following acknowledgement:
                     37:  *     This product includes software developed by the University of
                     38:  *     California, Berkeley and its contributors.
                     39:  * 4. Neither the name of the University nor the names of its contributors
                     40:  *    may be used to endorse or promote products derived from this software
                     41:  *    without specific prior written permission.
                     42:  *
                     43:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     44:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     45:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     46:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     47:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     48:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     49:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     50:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     51:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     52:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     53:  * SUCH DAMAGE.
                     54:  *
                     55:  *     @(#)dmap.h      8.2 (Berkeley) 1/4/94
                     56:  */
                     57: 
                     58: #ifndef _SYS_DMAP_H_
                     59: #define        _SYS_DMAP_H_
                     60: 
                     61: /*
                     62:  * Definitions for the mapping of vitual swap space to the physical swap
                     63:  * area - the disk map.
                     64:  */
                     65: #define        NDMAP   38              /* size of the swap area map */
                     66: 
                     67: struct dmap {
                     68:        swblk_t dm_size;        /* current size used by process */
                     69:        swblk_t dm_alloc;       /* amount of physical swap space allocated */
                     70:        swblk_t dm_map[NDMAP];  /* first disk block number in each chunk */
                     71: };
                     72: #ifdef KERNEL
                     73: extern struct dmap zdmap;
                     74: extern int dmmin, dmmax, dmtext;
                     75: #endif
                     76: 
                     77: /* The following structure is that ``returned'' from a call to vstodb(). */
                     78: struct dblock {
                     79:        swblk_t db_base;        /* base of physical contig drum block */
                     80:        swblk_t db_size;        /* size of block */
                     81: };
                     82: #endif /* !_SYS_DMAP_H_ */

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