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 __uint64_t si_inode; 71 uid_t si_uid; 72 gid_t si_gid; 73 int si_perms; 74 TAILQ_ENTRY(cdev) link; 75 int si_uminor; 76 int si_umajor; 77 LIST_ENTRY(cdev) si_hash; 78 SLIST_HEAD(, vnode) si_hlist; 79 char si_name[SPECNAMELEN + 1]; 80 void *si_drv1; 81 void *si_drv2; 82 struct dev_ops *si_ops; /* device operations vector */ 83 int si_iosize_max; /* maximum I/O size (for physio &al) */ 84 struct sysref si_sysref; 85 union { 86 struct { 87 struct tty *__sit_tty; 88 } __si_tty; 89 struct { 90 struct disk *__sid_disk; 91 struct mount *__sid_mountpoint; 92 int __sid_bsize_phys; /* min physical block size */ 93 int __sid_bsize_best; /* optimal block size */ 94 } __si_disk; 95 } __si_u; 96 struct bio_track si_track_read; 97 struct bio_track si_track_write; 98 time_t si_lastread; /* time_second */ 99 time_t si_lastwrite; /* time_second */ 100 }; 101 102 #define SI_UNUSED01 0x0001 103 #define SI_HASHED 0x0002 /* in (maj,min) hash table */ 104 #define SI_ADHOC 0x0004 /* created via make_adhoc_dev() or udev2dev() */ 105 #define SI_INTERCEPTED 0x0008 /* device ops was intercepted */ 106 107 #define si_tty __si_u.__si_tty.__sit_tty 108 #define si_disk __si_u.__si_disk.__sid_disk 109 #define si_mountpoint __si_u.__si_disk.__sid_mountpoint 110 #define si_bsize_phys __si_u.__si_disk.__sid_bsize_phys 111 #define si_bsize_best __si_u.__si_disk.__sid_bsize_best 112 113 #define CDEVSW_ALL_MINORS 0 /* mask of 0 always matches 0 */ 114 115 /* 116 * Special device management 117 */ 118 #define SPECHSZ 64 119 #define SPECHASH(rdev) (((unsigned)(minor(rdev)))%SPECHSZ) 120 121 /* 122 * Definitions of device driver entry switches 123 */ 124 125 struct buf; 126 struct bio; 127 struct proc; 128 struct uio; 129 struct knote; 130 struct ucred; 131 132 struct thread; 133 134 typedef int l_open_t (struct cdev *dev, struct tty *tp); 135 typedef int l_close_t (struct tty *tp, int flag); 136 typedef int l_read_t (struct tty *tp, struct uio *uio, int flag); 137 typedef int l_write_t (struct tty *tp, struct uio *uio, int flag); 138 typedef int l_ioctl_t (struct tty *tp, u_long cmd, caddr_t data, int flag, 139 struct ucred *cred); 140 typedef int l_rint_t (int c, struct tty *tp); 141 typedef int l_start_t (struct tty *tp); 142 typedef int l_modem_t (struct tty *tp, int flag); 143 144 /* 145 * Line discipline switch table 146 */ 147 struct linesw { 148 l_open_t *l_open; 149 l_close_t *l_close; 150 l_read_t *l_read; 151 l_write_t *l_write; 152 l_ioctl_t *l_ioctl; 153 l_rint_t *l_rint; 154 l_start_t *l_start; 155 l_modem_t *l_modem; 156 u_char l_hotchar; 157 }; 158 159 #ifdef _KERNEL 160 extern struct linesw linesw[]; 161 extern int nlinesw; 162 163 int ldisc_register (int , struct linesw *); 164 void ldisc_deregister (int); 165 #define LDISC_LOAD -1 /* Loadable line discipline */ 166 #endif 167 168 /* 169 * Swap device table 170 */ 171 struct swdevt { 172 udev_t sw_dev; /* For quasibogus swapdev reporting */ 173 int sw_flags; 174 int sw_nblks; 175 struct vnode *sw_vp; 176 struct cdev *sw_device; 177 }; 178 #define SW_FREED 0x01 179 #define SW_SEQUENTIAL 0x02 180 #define sw_freed sw_flags /* XXX compat */ 181 182 #ifdef _KERNEL 183 184 l_ioctl_t l_nullioctl; 185 l_read_t l_noread; 186 l_write_t l_nowrite; 187 188 struct module; 189 190 struct devsw_module_data { 191 int (*chainevh)(struct module *, int, void *); /* next handler */ 192 void *chainarg; /* arg for next event handler */ 193 /* Do not initialize fields hereafter */ 194 }; 195 196 #define DEV_MODULE(name, evh, arg) \ 197 static moduledata_t name##_mod = { \ 198 #name, \ 199 evh, \ 200 arg \ 201 }; \ 202 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE) 203 204 int count_dev (cdev_t dev); 205 int count_udev (int x, int y); 206 void destroy_dev (cdev_t dev); 207 void release_dev (cdev_t dev); 208 cdev_t get_dev (int x, int y); 209 cdev_t reference_dev (cdev_t dev); 210 struct dev_ops *devsw (cdev_t dev); 211 const char *devtoname (cdev_t dev); 212 void freedev (cdev_t dev); 213 int iszerodev (cdev_t dev); 214 215 cdev_t make_sub_dev (cdev_t dev, int minor); 216 int lminor (cdev_t dev); 217 void setconf (void); 218 cdev_t kgetdiskbyname(const char *name); 219 int dev_is_good(cdev_t dev); 220 221 /* 222 * XXX: This included for when DEVFS resurfaces 223 */ 224 225 #define UID_ROOT 0 226 #define UID_BIN 3 227 #define UID_UUCP 66 228 229 #define GID_WHEEL 0 230 #define GID_KMEM 2 231 #define GID_OPERATOR 5 232 #define GID_BIN 7 233 #define GID_GAMES 13 234 #define GID_DIALER 68 235 236 #endif /* _KERNEL */ 237 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 238 239 #endif /* !_SYS_CONF_H_ */ 240