conf.h revision 49678
1/*- 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * (c) UNIX System Laboratories, Inc. 5 * All or some portions of this file are derived from material licensed 6 * to the University of California by American Telephone and Telegraph 7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8 * the permission of UNIX System Laboratories, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)conf.h 8.5 (Berkeley) 1/9/95 39 * $Id: conf.h,v 1.69 1999/08/09 18:45:20 jdp Exp $ 40 */ 41 42#ifndef _SYS_CONF_H_ 43#define _SYS_CONF_H_ 44 45#include <sys/queue.h> 46 47#define SPECNAMELEN 15 48 49struct tty; 50struct vnode; 51 52struct specinfo { 53 struct mount *si_mountpoint; 54 int si_bsize_phys; /* minimum physical block size */ 55 int si_bsize_best; /* optimal block size / VBLK */ 56 int si_bsize_max; /* maximum block size */ 57 58 udev_t si_udev; 59 SLIST_ENTRY(specinfo) si_hash; 60 struct vnode *si_hlist; 61 char si_name[SPECNAMELEN + 1]; 62 void *si_drv1, *si_drv2; 63 struct cdevsw *si_devsw; 64 union { 65 struct { 66 struct tty *__sit_tty; 67 } __si_tty; 68 } __si_u; 69}; 70 71#define si_tty_tty __si_u.__si_tty.__sit_tty 72 73/* 74 * Exported shorthand 75 */ 76#define v_hashchain v_rdev->si_hlist 77#define v_specmountpoint v_rdev->si_mountpoint 78 79/* 80 * Special device management 81 */ 82#define SPECHSZ 64 83#define SPECHASH(rdev) (((unsigned)(minor(rdev)))%SPECHSZ) 84 85/* 86 * Definitions of device driver entry switches 87 */ 88 89struct buf; 90struct proc; 91struct uio; 92 93typedef int d_open_t __P((dev_t dev, int oflags, int devtype, struct proc *p)); 94typedef int d_close_t __P((dev_t dev, int fflag, int devtype, struct proc *p)); 95typedef void d_strategy_t __P((struct buf *bp)); 96typedef int d_parms_t __P((dev_t dev, struct specinfo *sinfo, int ctl)); 97typedef int d_ioctl_t __P((dev_t dev, u_long cmd, caddr_t data, 98 int fflag, struct proc *p)); 99typedef int d_dump_t __P((dev_t dev)); 100typedef int d_psize_t __P((dev_t dev)); 101 102typedef int d_read_t __P((dev_t dev, struct uio *uio, int ioflag)); 103typedef int d_write_t __P((dev_t dev, struct uio *uio, int ioflag)); 104typedef void d_stop_t __P((struct tty *tp, int rw)); 105typedef int d_reset_t __P((dev_t dev)); 106typedef struct tty *d_devtotty_t __P((dev_t dev)); 107typedef int d_poll_t __P((dev_t dev, int events, struct proc *p)); 108typedef int d_mmap_t __P((dev_t dev, vm_offset_t offset, int nprot)); 109 110typedef int l_open_t __P((dev_t dev, struct tty *tp)); 111typedef int l_close_t __P((struct tty *tp, int flag)); 112typedef int l_read_t __P((struct tty *tp, struct uio *uio, int flag)); 113typedef int l_write_t __P((struct tty *tp, struct uio *uio, int flag)); 114typedef int l_ioctl_t __P((struct tty *tp, u_long cmd, caddr_t data, 115 int flag, struct proc *p)); 116typedef int l_rint_t __P((int c, struct tty *tp)); 117typedef int l_start_t __P((struct tty *tp)); 118typedef int l_modem_t __P((struct tty *tp, int flag)); 119 120/* 121 * Types for d_type. 122 */ 123#define D_TAPE 1 124#define D_DISK 2 125#define D_TTY 3 126 127#define D_TYPEMASK 0xffff 128 129/* 130 * Flags for d_flags. 131 */ 132#define D_NOCLUSTERR 0x10000 /* disables cluter read */ 133#define D_NOCLUSTERW 0x20000 /* disables cluster write */ 134#define D_NOCLUSTERRW (D_NOCLUSTERR | D_NOCLUSTERW) 135#define D_CANFREE 0x40000 /* can free blocks */ 136 137/* 138 * Character device switch table 139 */ 140struct cdevsw { 141 d_open_t *d_open; 142 d_close_t *d_close; 143 d_read_t *d_read; 144 d_write_t *d_write; 145 d_ioctl_t *d_ioctl; 146 d_stop_t *d_stop; 147 d_reset_t *d_bogoreset; /* XXX not used */ 148 d_devtotty_t *d_devtotty; 149 d_poll_t *d_poll; 150 d_mmap_t *d_mmap; 151 d_strategy_t *d_strategy; 152 char *d_name; /* base device name, e.g. 'vn' */ 153 d_parms_t *d_bogoparms; /* XXX not used */ 154 int d_maj; 155 d_dump_t *d_dump; 156 d_psize_t *d_psize; 157 u_int d_flags; 158 int d_maxio; 159 int d_bmaj; 160}; 161 162/* 163 * Line discipline switch table 164 */ 165struct linesw { 166 l_open_t *l_open; 167 l_close_t *l_close; 168 l_read_t *l_read; 169 l_write_t *l_write; 170 l_ioctl_t *l_ioctl; 171 l_rint_t *l_rint; 172 l_start_t *l_start; 173 l_modem_t *l_modem; 174 u_char l_hotchar; 175}; 176 177#ifdef KERNEL 178extern struct linesw linesw[]; 179extern int nlinesw; 180 181int ldisc_register __P((int , struct linesw *)); 182void ldisc_deregister __P((int)); 183#define LDISC_LOAD -1 /* Loadable line discipline */ 184#endif 185 186/* 187 * Swap device table 188 */ 189struct swdevt { 190 udev_t sw_dev; /* For quasibogus swapdev reporting */ 191 int sw_flags; 192 int sw_nblks; 193 struct vnode *sw_vp; 194 dev_t sw_device; 195}; 196#define SW_FREED 0x01 197#define SW_SEQUENTIAL 0x02 198#define sw_freed sw_flags /* XXX compat */ 199 200#ifdef KERNEL 201d_open_t noopen; 202d_close_t noclose; 203d_read_t noread; 204d_write_t nowrite; 205d_ioctl_t noioctl; 206d_stop_t nostop; 207d_reset_t noreset; 208d_devtotty_t nodevtotty; 209d_mmap_t nommap; 210#define nostrategy ((d_strategy_t *)NULL) 211#define noparms ((d_parms_t *)NULL) 212#define nopoll seltrue 213 214d_dump_t nodump; 215 216#define NUMCDEVSW 256 217 218/* 219 * nopsize is little used, so not worth having dummy functions for. 220 */ 221#define nopsize ((d_psize_t *)NULL) 222 223d_open_t nullopen; 224d_close_t nullclose; 225 226l_read_t l_noread; 227l_write_t l_nowrite; 228 229struct module; 230 231struct devsw_module_data { 232 int (*chainevh)(struct module *, int, void *); /* next handler */ 233 void *chainarg; /* arg for next event handler */ 234 struct cdevsw *cdevsw; /* device functions */ 235 /* Do not initialize fields hereafter */ 236}; 237 238#define DEV_MODULE(name, cmaj, bmaj, devsw, evh, arg) \ 239static struct devsw_module_data name##_devsw_mod = { \ 240 evh, arg, &devsw \ 241}; \ 242 \ 243static moduledata_t name##_mod = { \ 244 #name, \ 245 devsw_module_handler, \ 246 &name##_devsw_mod \ 247}; \ 248DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE+cmaj*256+bmaj) 249 250 251struct cdevsw *bdevsw __P((dev_t dev)); 252int cdevsw_add __P((struct cdevsw *new)); 253int cdevsw_remove __P((struct cdevsw *old)); 254dev_t chrtoblk __P((dev_t dev)); 255struct cdevsw *devsw __P((dev_t dev)); 256int devsw_module_handler __P((struct module *mod, int what, void *arg)); 257int iskmemdev __P((dev_t dev)); 258int iszerodev __P((dev_t dev)); 259dev_t makebdev __P((int maj, int min)); 260dev_t make_dev __P((struct cdevsw *devsw, int minor, uid_t uid, gid_t gid, int perms, char *fmt, ...)) __printflike(6, 7); 261void setconf __P((void)); 262 263/* 264 * XXX: This gunk included in case DEVFS resurfaces 265 */ 266 267#define UID_ROOT 0 268#define UID_BIN 3 269#define UID_UUCP 66 270 271#define GID_WHEEL 0 272#define GID_KMEM 2 273#define GID_OPERATOR 5 274#define GID_BIN 7 275#define GID_GAMES 13 276#define GID_DIALER 68 277 278#endif /* KERNEL */ 279 280#endif /* !_SYS_CONF_H_ */ 281