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Annotation of Net2/sys/dmap.h, revision 1.1

1.1     ! root        1: /*-
        !             2:  * Copyright (c) 1982, 1986 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms, with or without
        !             6:  * modification, are permitted provided that the following conditions
        !             7:  * are met:
        !             8:  * 1. Redistributions of source code must retain the above copyright
        !             9:  *    notice, this list of conditions and the following disclaimer.
        !            10:  * 2. Redistributions in binary form must reproduce the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer in the
        !            12:  *    documentation and/or other materials provided with the distribution.
        !            13:  * 3. All advertising materials mentioning features or use of this software
        !            14:  *    must display the following acknowledgement:
        !            15:  *     This product includes software developed by the University of
        !            16:  *     California, Berkeley and its contributors.
        !            17:  * 4. Neither the name of the University nor the names of its contributors
        !            18:  *    may be used to endorse or promote products derived from this software
        !            19:  *    without specific prior written permission.
        !            20:  *
        !            21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            31:  * SUCH DAMAGE.
        !            32:  *
        !            33:  *     @(#)dmap.h      7.3 (Berkeley) 2/15/91
        !            34:  */
        !            35: 
        !            36: #ifndef _DMAP_H_
        !            37: #define        _DMAP_H_
        !            38: 
        !            39: /*
        !            40:  * Definitions for the mapping of vitual swap space to the physical swap
        !            41:  * area - the disk map.
        !            42:  */
        !            43: #define        NDMAP   38              /* size of the swap area map */
        !            44: 
        !            45: struct dmap {
        !            46:        swblk_t dm_size;        /* current size used by process */
        !            47:        swblk_t dm_alloc;       /* amount of physical swap space allocated */
        !            48:        swblk_t dm_map[NDMAP];  /* first disk block number in each chunk */
        !            49: };
        !            50: #ifdef KERNEL
        !            51: struct dmap zdmap;
        !            52: int dmmin, dmmax, dmtext;
        !            53: #endif
        !            54: 
        !            55: /* The following structure is that ``returned'' from a call to vstodb(). */
        !            56: struct dblock {
        !            57:        swblk_t db_base;        /* base of physical contig drum block */
        !            58:        swblk_t db_size;        /* size of block */
        !            59: };
        !            60: #endif /* !_DMAP_H_ */

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