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_OVERRIDE 0x0004 /* override uid, gid, and perms */ 105 #define SI_INTERCEPTED 0x0008 /* device ops was intercepted */ 106 #define SI_DEVFS_LINKED 0x0010 107 #define SI_REPROBE_TEST 0x0020 108 109 #define si_tty __si_u.__si_tty.__sit_tty 110 #define si_disk __si_u.__si_disk.__sid_disk 111 #define si_mountpoint __si_u.__si_disk.__sid_mountpoint 112 #define si_bsize_phys __si_u.__si_disk.__sid_bsize_phys 113 #define si_bsize_best __si_u.__si_disk.__sid_bsize_best 114 115 #define CDEVSW_ALL_MINORS 0 /* mask of 0 always matches 0 */ 116 117 /* 118 * Special device management 119 */ 120 #define SPECHSZ 64 121 #define SPECHASH(rdev) (((unsigned)(minor(rdev)))%SPECHSZ) 122 123 /* 124 * Definitions of device driver entry switches 125 */ 126 127 struct buf; 128 struct bio; 129 struct proc; 130 struct uio; 131 struct knote; 132 struct ucred; 133 134 struct thread; 135 136 typedef int l_open_t (struct cdev *dev, struct tty *tp); 137 typedef int l_close_t (struct tty *tp, int flag); 138 typedef int l_read_t (struct tty *tp, struct uio *uio, int flag); 139 typedef int l_write_t (struct tty *tp, struct uio *uio, int flag); 140 typedef int l_ioctl_t (struct tty *tp, u_long cmd, caddr_t data, int flag, 141 struct ucred *cred); 142 typedef int l_rint_t (int c, struct tty *tp); 143 typedef int l_start_t (struct tty *tp); 144 typedef int l_modem_t (struct tty *tp, int flag); 145 146 /* 147 * Line discipline switch table 148 */ 149 struct linesw { 150 l_open_t *l_open; 151 l_close_t *l_close; 152 l_read_t *l_read; 153 l_write_t *l_write; 154 l_ioctl_t *l_ioctl; 155 l_rint_t *l_rint; 156 l_start_t *l_start; 157 l_modem_t *l_modem; 158 u_char l_hotchar; 159 }; 160 161 #ifdef _KERNEL 162 extern struct linesw linesw[]; 163 extern int nlinesw; 164 165 int ldisc_register (int , struct linesw *); 166 void ldisc_deregister (int); 167 #define LDISC_LOAD -1 /* Loadable line discipline */ 168 #endif 169 170 /* 171 * Swap device table 172 */ 173 struct swdevt { 174 udev_t sw_dev; /* For quasibogus swapdev reporting */ 175 int sw_flags; 176 int sw_nblks; 177 struct vnode *sw_vp; 178 struct cdev *sw_device; 179 }; 180 #define SW_FREED 0x01 181 #define SW_SEQUENTIAL 0x02 182 #define sw_freed sw_flags /* XXX compat */ 183 184 #ifdef _KERNEL 185 186 l_ioctl_t l_nullioctl; 187 l_read_t l_noread; 188 l_write_t l_nowrite; 189 190 struct module; 191 192 struct devsw_module_data { 193 int (*chainevh)(struct module *, int, void *); /* next handler */ 194 void *chainarg; /* arg for next event handler */ 195 /* Do not initialize fields hereafter */ 196 }; 197 198 #define DEV_MODULE(name, evh, arg) \ 199 static moduledata_t name##_mod = { \ 200 #name, \ 201 evh, \ 202 arg \ 203 }; \ 204 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE) 205 206 int count_dev (cdev_t dev); 207 void destroy_dev (cdev_t dev); 208 void release_dev (cdev_t dev); 209 cdev_t get_dev (int x, int y); 210 cdev_t reference_dev (cdev_t dev); 211 struct dev_ops *devsw (cdev_t dev); 212 const char *devtoname (cdev_t dev); 213 void freedev (cdev_t dev); 214 int iszerodev (cdev_t dev); 215 216 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_TTY 4 232 #define GID_OPERATOR 5 233 #define GID_BIN 7 234 #define GID_GAMES 13 235 #define GID_DIALER 68 236 237 #endif /* _KERNEL */ 238 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 239 240 #endif /* !_SYS_CONF_H_ */ 241