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Annotation of kernel/bsd/sys/conf.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
        !            26: /*-
        !            27:  * Copyright (c) 1990, 1993
        !            28:  *     The Regents of the University of California.  All rights reserved.
        !            29:  * (c) UNIX System Laboratories, Inc.
        !            30:  * All or some portions of this file are derived from material licensed
        !            31:  * to the University of California by American Telephone and Telegraph
        !            32:  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
        !            33:  * the permission of UNIX System Laboratories, Inc.
        !            34:  *
        !            35:  * Redistribution and use in source and binary forms, with or without
        !            36:  * modification, are permitted provided that the following conditions
        !            37:  * are met:
        !            38:  * 1. Redistributions of source code must retain the above copyright
        !            39:  *    notice, this list of conditions and the following disclaimer.
        !            40:  * 2. Redistributions in binary form must reproduce the above copyright
        !            41:  *    notice, this list of conditions and the following disclaimer in the
        !            42:  *    documentation and/or other materials provided with the distribution.
        !            43:  * 3. All advertising materials mentioning features or use of this software
        !            44:  *    must display the following acknowledgement:
        !            45:  *     This product includes software developed by the University of
        !            46:  *     California, Berkeley and its contributors.
        !            47:  * 4. Neither the name of the University nor the names of its contributors
        !            48:  *    may be used to endorse or promote products derived from this software
        !            49:  *    without specific prior written permission.
        !            50:  *
        !            51:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            52:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            53:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            54:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            55:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            56:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            57:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            58:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            59:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            60:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            61:  * SUCH DAMAGE.
        !            62:  *
        !            63:  *     @(#)conf.h      8.5 (Berkeley) 1/9/95
        !            64:  */
        !            65: 
        !            66: #ifndef _SYS_CONF_H_
        !            67: #define _SYS_CONF_H_ 1
        !            68: 
        !            69: /*
        !            70:  * Definitions of device driver entry switches
        !            71:  */
        !            72: 
        !            73: struct buf;
        !            74: struct proc;
        !            75: struct tty;
        !            76: struct uio;
        !            77: struct vnode;
        !            78: 
        !            79: /* 
        !            80:  * Device switch function types.
        !            81:  */
        !            82: typedef int  open_close_fcn_t  __P((dev_t dev, int flags, int devtype,
        !            83:                                     struct proc *p));
        !            84: typedef        void strategy_fcn_t     __P((struct buf *bp));
        !            85: typedef int  ioctl_fcn_t       __P((dev_t dev, u_long cmd, caddr_t data,
        !            86:                                     int fflag, struct proc *p));
        !            87: typedef int  dump_fcn_t        ();     /* parameters vary by architecture */
        !            88: typedef        int  psize_fcn_t        __P((dev_t dev));
        !            89: typedef int  read_write_fcn_t  __P((dev_t dev, struct uio *uio, int ioflag));
        !            90: typedef        int  stop_fcn_t         __P((struct tty *tp, int rw));
        !            91: typedef        int  reset_fcn_t        __P((int uban));
        !            92: typedef        int  select_fcn_t       __P((dev_t dev, int which, struct proc *p));
        !            93: typedef        int  mmap_fcn_t         __P(());
        !            94: typedef        int  getc_fcn_t         __P((dev_t dev));
        !            95: typedef        int  putc_fcn_t         __P((dev_t dev, char c));
        !            96: 
        !            97: /*
        !            98:  * Versions of enodev() pointer, cast to appropriate function type. For use
        !            99:  * in empty devsw slots.
        !           100:  */
        !           101: #define eno_opcl               ((open_close_fcn_t *)&enodev)
        !           102: #define eno_strat              ((strategy_fcn_t *)&enodev_strat)
        !           103: #define eno_ioctl              ((ioctl_fcn_t *)&enodev)
        !           104: #define eno_dump               ((dump_fcn_t *)&enodev)
        !           105: #define eno_psize              ((psize_fcn_t *)&enodev)
        !           106: #define eno_rdwrt              ((read_write_fcn_t *)&enodev)
        !           107: #define eno_stop               ((stop_fcn_t *)&enodev)
        !           108: #define eno_reset              ((reset_fcn_t *)&enodev)
        !           109: #define eno_mmap               ((mmap_fcn_t *)&enodev)
        !           110: #define eno_getc               ((getc_fcn_t *)&enodev)
        !           111: #define eno_putc               ((putc_fcn_t *)&enodev)
        !           112: #define eno_select             ((select_fcn_t *)&enodev)
        !           113: 
        !           114: /*
        !           115:  * Types for d_type.
        !           116:  */
        !           117: #define        D_TAPE  1
        !           118: #define        D_DISK  2
        !           119: #define        D_TTY   3
        !           120: 
        !           121: /*
        !           122:  * Block device switch table
        !           123:  */
        !           124: struct bdevsw {
        !           125:        open_close_fcn_t        *d_open;
        !           126:        open_close_fcn_t        *d_close;
        !           127:        strategy_fcn_t          *d_strategy;
        !           128:        ioctl_fcn_t             *d_ioctl;
        !           129:        dump_fcn_t              *d_dump;
        !           130:        psize_fcn_t             *d_psize;
        !           131:        int                     d_type;
        !           132: };
        !           133: 
        !           134: #ifdef _KERNEL
        !           135: 
        !           136: extern struct bdevsw bdevsw[];
        !           137: 
        !           138: /*
        !           139:  * Contents of empty bdevsw slot.
        !           140:  */
        !           141: #define         NO_BDEVICE                                             \
        !           142:        { eno_opcl,     eno_opcl,       eno_strat, eno_ioctl,   \
        !           143:          eno_dump,     eno_psize,      0       }
        !           144:          
        !           145: #endif /* _KERNEL */
        !           146: 
        !           147: /*
        !           148:  * Character device switch table
        !           149:  */
        !           150: struct cdevsw {
        !           151:        open_close_fcn_t        *d_open;
        !           152:        open_close_fcn_t        *d_close;
        !           153:        read_write_fcn_t        *d_read;
        !           154:        read_write_fcn_t        *d_write;
        !           155:        ioctl_fcn_t             *d_ioctl;
        !           156:        stop_fcn_t              *d_stop;
        !           157:        reset_fcn_t             *d_reset;
        !           158:        struct  tty             **d_ttys;
        !           159:        select_fcn_t            *d_select;
        !           160:        mmap_fcn_t              *d_mmap;
        !           161:        strategy_fcn_t          *d_strategy;
        !           162:        getc_fcn_t              *d_getc;
        !           163:        putc_fcn_t              *d_putc;
        !           164:        int                     d_type;
        !           165: };
        !           166: 
        !           167: #ifdef _KERNEL
        !           168: 
        !           169: extern struct cdevsw cdevsw[];
        !           170: 
        !           171: /*
        !           172:  * Contents of empty cdevsw slot.
        !           173:  */
        !           174: 
        !           175: #define         NO_CDEVICE                                                     \
        !           176:     {                                                                  \
        !           177:        eno_opcl,       eno_opcl,       eno_rdwrt,      eno_rdwrt,      \
        !           178:        eno_ioctl,      eno_stop,       eno_reset,      0,              \
        !           179:        seltrue,        eno_mmap,       eno_strat,      eno_getc,       \
        !           180:        eno_putc,       0                                               \
        !           181:     }
        !           182:     
        !           183: #endif /* _KERNEL */
        !           184: 
        !           185: /*
        !           186:  * Line discipline switch table
        !           187:  */
        !           188: struct linesw {
        !           189:        int     (*l_open)       __P((dev_t dev, struct tty *tp));
        !           190:        int     (*l_close)      __P((struct tty *tp, int flags));
        !           191:        int     (*l_read)       __P((struct tty *tp, struct uio *uio,
        !           192:                                     int flag));
        !           193:        int     (*l_write)      __P((struct tty *tp, struct uio *uio,
        !           194:                                     int flag));
        !           195:        int     (*l_ioctl)      __P((struct tty *tp, u_long cmd, caddr_t data,
        !           196:                                     int flag, struct proc *p));
        !           197:        int     (*l_rint)       __P((int c, struct tty *tp));
        !           198:        int     (*l_start)      __P((struct tty *tp));
        !           199:        int     (*l_modem)      __P((struct tty *tp, int flag));
        !           200: };
        !           201: 
        !           202: #ifdef _KERNEL
        !           203: extern struct linesw linesw[];
        !           204: extern int nlinesw;
        !           205:  
        !           206: int ldisc_register __P((int , struct linesw *));
        !           207: void ldisc_deregister __P((int));
        !           208: #define LDISC_LOAD      -1              /* Loadable line discipline */
        !           209: #endif
        !           210: 
        !           211: /*
        !           212:  * Swap device table
        !           213:  */
        !           214: struct swdevt {
        !           215:        dev_t   sw_dev;
        !           216:        int     sw_flags;
        !           217:        int     sw_nblks;
        !           218:        struct  vnode *sw_vp;
        !           219: };
        !           220: #define        SW_FREED        0x01
        !           221: #define        SW_SEQUENTIAL   0x02
        !           222: #define        sw_freed        sw_flags        /* XXX compat */
        !           223: 
        !           224: #ifdef _KERNEL
        !           225: extern struct swdevt swdevt[];
        !           226: #endif
        !           227: 
        !           228: #endif /* _SYS_CONF_H_ */

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