conf.h revision 51658
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 * $FreeBSD: head/sys/sys/conf.h 51658 1999-09-25 18:24:47Z phk $ 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 disk; 51struct vnode; 52 53struct specinfo { 54 u_int si_flags; 55#define SI_STASHED 0x0001 /* created in stashed storage */ 56 udev_t si_udev; 57 LIST_ENTRY(specinfo) si_hash; 58 SLIST_HEAD(, vnode) si_hlist; 59 char si_name[SPECNAMELEN + 1]; 60 void *si_drv1, *si_drv2; 61 struct cdevsw *si_devsw; 62 void *si_devfs; /* save cookie for devfs operations */ 63 void *si_bdevfs; /* XXX block device (should go away) */ 64 int si_iosize_max; /* maximum I/O size (for physio &al) */ 65 union { 66 struct { 67 struct tty *__sit_tty; 68 } __si_tty; 69 struct { 70 struct disk *__sid_disk; 71 struct mount *__sid_mountpoint; 72 int __sid_bsize_phys; /* min physical block size */ 73 int __sid_bsize_best; /* optimal block size */ 74 } __si_disk; 75 } __si_u; 76}; 77 78#define si_tty __si_u.__si_tty.__sit_tty 79#define si_disk __si_u.__si_disk.__sid_disk 80#define si_mountpoint __si_u.__si_disk.__sid_mountpoint 81#define si_bsize_phys __si_u.__si_disk.__sid_bsize_phys 82#define si_bsize_best __si_u.__si_disk.__sid_bsize_best 83 84/* 85 * Exported shorthand 86 */ 87#define v_hashchain v_rdev->si_hlist 88#define v_specmountpoint v_rdev->si_mountpoint 89 90/* 91 * Special device management 92 */ 93#define SPECHSZ 64 94#define SPECHASH(rdev) (((unsigned)(minor(rdev)))%SPECHSZ) 95 96/* 97 * Definitions of device driver entry switches 98 */ 99 100struct buf; 101struct proc; 102struct uio; 103 104typedef int d_open_t __P((dev_t dev, int oflags, int devtype, struct proc *p)); 105typedef int d_close_t __P((dev_t dev, int fflag, int devtype, struct proc *p)); 106typedef void d_strategy_t __P((struct buf *bp)); 107typedef int d_parms_t __P((dev_t dev, struct specinfo *sinfo, int ctl)); 108typedef int d_ioctl_t __P((dev_t dev, u_long cmd, caddr_t data, 109 int fflag, struct proc *p)); 110typedef int d_dump_t __P((dev_t dev)); 111typedef int d_psize_t __P((dev_t dev)); 112 113typedef int d_read_t __P((dev_t dev, struct uio *uio, int ioflag)); 114typedef int d_write_t __P((dev_t dev, struct uio *uio, int ioflag)); 115typedef int d_poll_t __P((dev_t dev, int events, struct proc *p)); 116typedef int d_mmap_t __P((dev_t dev, vm_offset_t offset, int nprot)); 117 118typedef int l_open_t __P((dev_t dev, struct tty *tp)); 119typedef int l_close_t __P((struct tty *tp, int flag)); 120typedef int l_read_t __P((struct tty *tp, struct uio *uio, int flag)); 121typedef int l_write_t __P((struct tty *tp, struct uio *uio, int flag)); 122typedef int l_ioctl_t __P((struct tty *tp, u_long cmd, caddr_t data, 123 int flag, struct proc *p)); 124typedef int l_rint_t __P((int c, struct tty *tp)); 125typedef int l_start_t __P((struct tty *tp)); 126typedef int l_modem_t __P((struct tty *tp, int flag)); 127 128/* This is type of the function DEVFS uses to hook into the kernel with */ 129typedef void devfs_create_t __P((dev_t dev, uid_t uid, gid_t gid, int perms)); 130typedef void devfs_remove_t __P((dev_t dev)); 131 132/* 133 * XXX: The dummy argument can be used to do what strategy1() never 134 * did anywhere: Create a per device flag to lock the device during 135 * label/slice surgery, all calls with a dummy == 0 gets stalled on 136 * a queue somewhere, whereas dummy == 1 are let through. Once out 137 * of surgery, reset the flag and restart all the stuff on the stall 138 * queue. 139 */ 140#define BUF_STRATEGY(bp, dummy) (*devsw((bp)->b_dev)->d_strategy)(bp) 141/* 142 * Types for d_flags. 143 */ 144#define D_TAPE 0x0001 145#define D_DISK 0x0002 146#define D_TTY 0x0004 147#define D_MEM 0x0008 148 149#define D_TYPEMASK 0xffff 150 151/* 152 * Flags for d_flags. 153 */ 154#define D_NOCLUSTERR 0x10000 /* disables cluter read */ 155#define D_NOCLUSTERW 0x20000 /* disables cluster write */ 156#define D_NOCLUSTERRW (D_NOCLUSTERR | D_NOCLUSTERW) 157#define D_CANFREE 0x40000 /* can free blocks */ 158#define D_TRACKCLOSE 0x80000 /* track all closes */ 159 160/* 161 * Character device switch table 162 */ 163struct cdevsw { 164 d_open_t *d_open; 165 d_close_t *d_close; 166 d_read_t *d_read; 167 d_write_t *d_write; 168 d_ioctl_t *d_ioctl; 169 d_stop_t *d_bogostop; 170 d_reset_t *d_bogoreset; /* XXX not used */ 171 d_devtotty_t *d_bogodevtotty; /* XXX not used */ 172 d_poll_t *d_poll; 173 d_mmap_t *d_mmap; 174 d_strategy_t *d_strategy; 175 const char *d_name; /* base device name, e.g. 'vn' */ 176 int d_maj; 177 d_dump_t *d_dump; 178 d_psize_t *d_psize; 179 u_int d_flags; 180 int d_bmaj; 181}; 182 183/* 184 * Line discipline switch table 185 */ 186struct linesw { 187 l_open_t *l_open; 188 l_close_t *l_close; 189 l_read_t *l_read; 190 l_write_t *l_write; 191 l_ioctl_t *l_ioctl; 192 l_rint_t *l_rint; 193 l_start_t *l_start; 194 l_modem_t *l_modem; 195 u_char l_hotchar; 196}; 197 198#ifdef KERNEL 199extern struct linesw linesw[]; 200extern int nlinesw; 201 202int ldisc_register __P((int , struct linesw *)); 203void ldisc_deregister __P((int)); 204#define LDISC_LOAD -1 /* Loadable line discipline */ 205#endif 206 207/* 208 * Swap device table 209 */ 210struct swdevt { 211 udev_t sw_dev; /* For quasibogus swapdev reporting */ 212 int sw_flags; 213 int sw_nblks; 214 struct vnode *sw_vp; 215 dev_t sw_device; 216}; 217#define SW_FREED 0x01 218#define SW_SEQUENTIAL 0x02 219#define sw_freed sw_flags /* XXX compat */ 220 221#ifdef KERNEL 222d_open_t noopen; 223d_close_t noclose; 224d_read_t noread; 225d_write_t nowrite; 226d_ioctl_t noioctl; 227d_mmap_t nommap; 228#define nostrategy ((d_strategy_t *)NULL) 229#define nopoll seltrue 230 231d_dump_t nodump; 232 233#define NUMCDEVSW 256 234 235/* 236 * nopsize is little used, so not worth having dummy functions for. 237 */ 238#define nopsize ((d_psize_t *)NULL) 239 240d_open_t nullopen; 241d_close_t nullclose; 242 243l_read_t l_noread; 244l_write_t l_nowrite; 245 246struct module; 247 248struct devsw_module_data { 249 int (*chainevh)(struct module *, int, void *); /* next handler */ 250 void *chainarg; /* arg for next event handler */ 251 struct cdevsw *cdevsw; /* device functions */ 252 /* Do not initialize fields hereafter */ 253}; 254 255#define DEV_MODULE(name, cmaj, bmaj, devsw, evh, arg) \ 256static struct devsw_module_data name##_devsw_mod = { \ 257 evh, arg, &devsw \ 258}; \ 259 \ 260static moduledata_t name##_mod = { \ 261 #name, \ 262 devsw_module_handler, \ 263 &name##_devsw_mod \ 264}; \ 265DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE+cmaj*256+bmaj) 266 267 268int cdevsw_add __P((struct cdevsw *new)); 269int cdevsw_remove __P((struct cdevsw *old)); 270dev_t chrtoblk __P((dev_t dev)); 271struct cdevsw *devsw __P((dev_t dev)); 272int devsw_module_handler __P((struct module *mod, int what, void *arg)); 273const char *devtoname __P((dev_t dev)); 274void freedev __P((dev_t dev)); 275int iskmemdev __P((dev_t dev)); 276int iszerodev __P((dev_t dev)); 277dev_t makebdev __P((int maj, int min)); 278dev_t make_dev __P((struct cdevsw *devsw, int minor, uid_t uid, gid_t gid, int perms, char *fmt, ...)) __printflike(6, 7); 279int lminor __P((dev_t dev)); 280void remove_dev __P((dev_t dev)); 281void setconf __P((void)); 282 283extern devfs_create_t *devfs_create_hook; 284 285/* 286 * XXX: This included for when DEVFS resurfaces 287 */ 288 289#define UID_ROOT 0 290#define UID_BIN 3 291#define UID_UUCP 66 292 293#define GID_WHEEL 0 294#define GID_KMEM 2 295#define GID_OPERATOR 5 296#define GID_BIN 7 297#define GID_GAMES 13 298#define GID_DIALER 68 299 300#endif /* KERNEL */ 301 302#endif /* !_SYS_CONF_H_ */ 303