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: src/sys/sys/conf.h,v 1.103.2.6 2002/03/11 01:14:55 dd Exp $ 40 * $DragonFly: src/sys/sys/conf.h,v 1.11 2006/07/28 02:17:41 dillon Exp $ 41 */ 42 43 #ifndef _SYS_CONF_H_ 44 #define _SYS_CONF_H_ 45 46 #include <sys/queue.h> 47 #include <sys/time.h> 48 #include <sys/biotrack.h> 49 50 #define SPECNAMELEN 15 51 52 struct tty; 53 struct disk; 54 struct vnode; 55 struct dev_ops; 56 57 struct specinfo { 58 u_int si_flags; 59 udev_t si_udev; 60 LIST_ENTRY(specinfo) si_hash; 61 SLIST_HEAD(, vnode) si_hlist; 62 char si_name[SPECNAMELEN + 1]; 63 void *si_drv1; 64 void *si_drv2; 65 struct dev_ops *si_ops; /* device operations vector */ 66 int si_iosize_max; /* maximum I/O size (for physio &al) */ 67 int si_refs; 68 union { 69 struct { 70 struct tty *__sit_tty; 71 } __si_tty; 72 struct { 73 struct disk *__sid_disk; 74 struct mount *__sid_mountpoint; 75 int __sid_bsize_phys; /* min physical block size */ 76 int __sid_bsize_best; /* optimal block size */ 77 } __si_disk; 78 } __si_u; 79 struct bio_track si_track_read; 80 struct bio_track si_track_write; 81 time_t si_lastread; /* time_second */ 82 time_t si_lastwrite; /* time_second */ 83 }; 84 85 #define SI_STASHED 0x0001 /* created in stashed storage */ 86 #define SI_HASHED 0x0002 /* in (maj,min) hash table */ 87 #define SI_ADHOC 0x0004 /* created via make_adhoc_dev() or udev2dev() */ 88 89 #define si_tty __si_u.__si_tty.__sit_tty 90 #define si_disk __si_u.__si_disk.__sid_disk 91 #define si_mountpoint __si_u.__si_disk.__sid_mountpoint 92 #define si_bsize_phys __si_u.__si_disk.__sid_bsize_phys 93 #define si_bsize_best __si_u.__si_disk.__sid_bsize_best 94 95 #define CDEVSW_ALL_MINORS 0 /* mask of 0 always matches 0 */ 96 97 /* 98 * Special device management 99 */ 100 #define SPECHSZ 64 101 #define SPECHASH(rdev) (((unsigned)(minor(rdev)))%SPECHSZ) 102 103 /* 104 * Definitions of device driver entry switches 105 */ 106 107 struct buf; 108 struct bio; 109 struct proc; 110 struct uio; 111 struct knote; 112 struct ucred; 113 114 struct thread; 115 116 typedef int l_open_t (dev_t dev, struct tty *tp); 117 typedef int l_close_t (struct tty *tp, int flag); 118 typedef int l_read_t (struct tty *tp, struct uio *uio, int flag); 119 typedef int l_write_t (struct tty *tp, struct uio *uio, int flag); 120 typedef int l_ioctl_t (struct tty *tp, u_long cmd, caddr_t data, int flag, 121 struct ucred *cred); 122 typedef int l_rint_t (int c, struct tty *tp); 123 typedef int l_start_t (struct tty *tp); 124 typedef int l_modem_t (struct tty *tp, int flag); 125 126 /* 127 * Line discipline switch table 128 */ 129 struct linesw { 130 l_open_t *l_open; 131 l_close_t *l_close; 132 l_read_t *l_read; 133 l_write_t *l_write; 134 l_ioctl_t *l_ioctl; 135 l_rint_t *l_rint; 136 l_start_t *l_start; 137 l_modem_t *l_modem; 138 u_char l_hotchar; 139 }; 140 141 #ifdef _KERNEL 142 extern struct linesw linesw[]; 143 extern int nlinesw; 144 145 int ldisc_register (int , struct linesw *); 146 void ldisc_deregister (int); 147 #define LDISC_LOAD -1 /* Loadable line discipline */ 148 #endif 149 150 /* 151 * Swap device table 152 */ 153 struct swdevt { 154 udev_t sw_dev; /* For quasibogus swapdev reporting */ 155 int sw_flags; 156 int sw_nblks; 157 struct vnode *sw_vp; 158 dev_t sw_device; 159 }; 160 #define SW_FREED 0x01 161 #define SW_SEQUENTIAL 0x02 162 #define sw_freed sw_flags /* XXX compat */ 163 164 #ifdef _KERNEL 165 166 #define NUMCDEVSW 256 167 168 l_ioctl_t l_nullioctl; 169 l_read_t l_noread; 170 l_write_t l_nowrite; 171 172 struct module; 173 174 struct devsw_module_data { 175 int (*chainevh)(struct module *, int, void *); /* next handler */ 176 void *chainarg; /* arg for next event handler */ 177 /* Do not initialize fields hereafter */ 178 }; 179 180 #define DEV_MODULE(name, evh, arg) \ 181 static moduledata_t name##_mod = { \ 182 #name, \ 183 evh, \ 184 arg \ 185 }; \ 186 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE) 187 188 int count_dev (dev_t dev); 189 int count_udev (udev_t dev); 190 void destroy_dev (dev_t dev); 191 void release_dev (dev_t dev); 192 dev_t reference_dev (dev_t dev); 193 struct dev_ops *devsw (dev_t dev); 194 const char *devtoname (dev_t dev); 195 void freedev (dev_t dev); 196 int iszerodev (dev_t dev); 197 198 dev_t make_sub_dev (dev_t dev, int minor); 199 int lminor (dev_t dev); 200 void setconf (void); 201 dev_t getdiskbyname(const char *name); 202 int dev_is_good(dev_t dev); 203 204 /* 205 * XXX: This included for when DEVFS resurfaces 206 */ 207 208 #define UID_ROOT 0 209 #define UID_BIN 3 210 #define UID_UUCP 66 211 212 #define GID_WHEEL 0 213 #define GID_KMEM 2 214 #define GID_OPERATOR 5 215 #define GID_BIN 7 216 #define GID_GAMES 13 217 #define GID_DIALER 68 218 219 #endif /* _KERNEL */ 220 221 #endif /* !_SYS_CONF_H_ */ 222