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 1.18 2007/05/09 00:53:35 dillon Exp $ 41 */ 42 43 #ifndef _SYS_CONF_H_ 44 #define _SYS_CONF_H_ 45 46 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 47 48 #ifndef _SYS_QUEUE_H_ 49 #include <sys/queue.h> 50 #endif 51 #ifndef _SYS_TIME_H_ 52 #include <sys/time.h> 53 #endif 54 #ifndef _SYS_BIOTRACK_H_ 55 #include <sys/biotrack.h> 56 #endif 57 #ifndef _SYS_SYSREF_H_ 58 #include <sys/sysref.h> 59 #endif 60 61 #define SPECNAMELEN 15 62 63 struct tty; 64 struct disk; 65 struct vnode; 66 struct dev_ops; 67 68 struct cdev { 69 u_int si_flags; 70 int si_uminor; 71 int si_umajor; 72 LIST_ENTRY(cdev) si_hash; 73 SLIST_HEAD(, vnode) si_hlist; 74 char si_name[SPECNAMELEN + 1]; 75 void *si_drv1; 76 void *si_drv2; 77 struct dev_ops *si_ops; /* device operations vector */ 78 int si_iosize_max; /* maximum I/O size (for physio &al) */ 79 struct sysref si_sysref; 80 union { 81 struct { 82 struct tty *__sit_tty; 83 } __si_tty; 84 struct { 85 struct disk *__sid_disk; 86 struct mount *__sid_mountpoint; 87 int __sid_bsize_phys; /* min physical block size */ 88 int __sid_bsize_best; /* optimal block size */ 89 } __si_disk; 90 } __si_u; 91 struct bio_track si_track_read; 92 struct bio_track si_track_write; 93 time_t si_lastread; /* time_second */ 94 time_t si_lastwrite; /* time_second */ 95 }; 96 97 #define SI_UNUSED01 0x0001 98 #define SI_HASHED 0x0002 /* in (maj,min) hash table */ 99 #define SI_ADHOC 0x0004 /* created via make_adhoc_dev() or udev2dev() */ 100 #define SI_INTERCEPTED 0x0008 /* device ops was intercepted */ 101 102 #define si_tty __si_u.__si_tty.__sit_tty 103 #define si_disk __si_u.__si_disk.__sid_disk 104 #define si_mountpoint __si_u.__si_disk.__sid_mountpoint 105 #define si_bsize_phys __si_u.__si_disk.__sid_bsize_phys 106 #define si_bsize_best __si_u.__si_disk.__sid_bsize_best 107 108 #define CDEVSW_ALL_MINORS 0 /* mask of 0 always matches 0 */ 109 110 /* 111 * Special device management 112 */ 113 #define SPECHSZ 64 114 #define SPECHASH(rdev) (((unsigned)(minor(rdev)))%SPECHSZ) 115 116 /* 117 * Definitions of device driver entry switches 118 */ 119 120 struct buf; 121 struct bio; 122 struct proc; 123 struct uio; 124 struct knote; 125 struct ucred; 126 127 struct thread; 128 129 typedef int l_open_t (struct cdev *dev, struct tty *tp); 130 typedef int l_close_t (struct tty *tp, int flag); 131 typedef int l_read_t (struct tty *tp, struct uio *uio, int flag); 132 typedef int l_write_t (struct tty *tp, struct uio *uio, int flag); 133 typedef int l_ioctl_t (struct tty *tp, u_long cmd, caddr_t data, int flag, 134 struct ucred *cred); 135 typedef int l_rint_t (int c, struct tty *tp); 136 typedef int l_start_t (struct tty *tp); 137 typedef int l_modem_t (struct tty *tp, int flag); 138 139 /* 140 * Line discipline switch table 141 */ 142 struct linesw { 143 l_open_t *l_open; 144 l_close_t *l_close; 145 l_read_t *l_read; 146 l_write_t *l_write; 147 l_ioctl_t *l_ioctl; 148 l_rint_t *l_rint; 149 l_start_t *l_start; 150 l_modem_t *l_modem; 151 u_char l_hotchar; 152 }; 153 154 #ifdef _KERNEL 155 extern struct linesw linesw[]; 156 extern int nlinesw; 157 158 int ldisc_register (int , struct linesw *); 159 void ldisc_deregister (int); 160 #define LDISC_LOAD -1 /* Loadable line discipline */ 161 #endif 162 163 /* 164 * Swap device table 165 */ 166 struct swdevt { 167 udev_t sw_dev; /* For quasibogus swapdev reporting */ 168 int sw_flags; 169 int sw_nblks; 170 struct vnode *sw_vp; 171 struct cdev *sw_device; 172 }; 173 #define SW_FREED 0x01 174 #define SW_SEQUENTIAL 0x02 175 #define sw_freed sw_flags /* XXX compat */ 176 177 #ifdef _KERNEL 178 179 l_ioctl_t l_nullioctl; 180 l_read_t l_noread; 181 l_write_t l_nowrite; 182 183 struct module; 184 185 struct devsw_module_data { 186 int (*chainevh)(struct module *, int, void *); /* next handler */ 187 void *chainarg; /* arg for next event handler */ 188 /* Do not initialize fields hereafter */ 189 }; 190 191 #define DEV_MODULE(name, evh, arg) \ 192 static moduledata_t name##_mod = { \ 193 #name, \ 194 evh, \ 195 arg \ 196 }; \ 197 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE) 198 199 int count_dev (cdev_t dev); 200 int count_udev (int x, int y); 201 void destroy_dev (cdev_t dev); 202 void release_dev (cdev_t dev); 203 cdev_t get_dev (int x, int y); 204 cdev_t reference_dev (cdev_t dev); 205 struct dev_ops *devsw (cdev_t dev); 206 const char *devtoname (cdev_t dev); 207 void freedev (cdev_t dev); 208 int iszerodev (cdev_t dev); 209 210 cdev_t make_sub_dev (cdev_t dev, int minor); 211 int lminor (cdev_t dev); 212 void setconf (void); 213 cdev_t kgetdiskbyname(const char *name); 214 int dev_is_good(cdev_t dev); 215 216 /* 217 * XXX: This included for when DEVFS resurfaces 218 */ 219 220 #define UID_ROOT 0 221 #define UID_BIN 3 222 #define UID_UUCP 66 223 224 #define GID_WHEEL 0 225 #define GID_KMEM 2 226 #define GID_OPERATOR 5 227 #define GID_BIN 7 228 #define GID_GAMES 13 229 #define GID_DIALER 68 230 231 #endif /* _KERNEL */ 232 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 233 234 #endif /* !_SYS_CONF_H_ */ 235