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 struct vm_object; 68 69 struct cdev { 70 u_int si_flags; 71 __uint64_t si_inode; 72 uid_t si_uid; 73 gid_t si_gid; 74 int si_perms; 75 TAILQ_ENTRY(cdev) link; 76 int si_uminor; 77 int si_umajor; 78 LIST_ENTRY(cdev) si_hash; 79 SLIST_HEAD(, vnode) si_hlist; 80 char si_name[SPECNAMELEN + 1]; 81 void *si_drv1; 82 void *si_drv2; 83 struct dev_ops *si_ops; /* device operations vector */ 84 struct dev_ops *si_bops; /* backing devops vector */ 85 int si_iosize_max; /* maximum I/O size (for physio &al) */ 86 struct sysref si_sysref; 87 union { 88 struct { 89 struct tty *__sit_tty; 90 } __si_tty; 91 struct { 92 struct disk *__sid_disk; 93 struct mount *__sid_mountpoint; 94 int __sid_bsize_phys; /* min physical block size */ 95 int __sid_bsize_best; /* optimal block size */ 96 } __si_disk; 97 } __si_u; 98 struct bio_track si_track_read; 99 struct bio_track si_track_write; 100 time_t si_lastread; /* time_second */ 101 time_t si_lastwrite; /* time_second */ 102 struct vm_object *si_object; /* vm_pager support */ 103 }; 104 105 #define SI_UNUSED01 0x0001 106 #define SI_HASHED 0x0002 /* in (maj,min) hash table */ 107 #define SI_OVERRIDE 0x0004 /* override uid, gid, and perms */ 108 #define SI_INTERCEPTED 0x0008 /* device ops was intercepted */ 109 #define SI_DEVFS_LINKED 0x0010 110 #define SI_REPROBE_TEST 0x0020 111 112 #define si_tty __si_u.__si_tty.__sit_tty 113 #define si_disk __si_u.__si_disk.__sid_disk 114 #define si_mountpoint __si_u.__si_disk.__sid_mountpoint 115 #define si_bsize_phys __si_u.__si_disk.__sid_bsize_phys 116 #define si_bsize_best __si_u.__si_disk.__sid_bsize_best 117 118 #define CDEVSW_ALL_MINORS 0 /* mask of 0 always matches 0 */ 119 120 /* 121 * Special device management 122 */ 123 #define SPECHSZ 64 124 #define SPECHASH(rdev) (((unsigned)(minor(rdev)))%SPECHSZ) 125 126 /* 127 * Definitions of device driver entry switches 128 */ 129 130 struct buf; 131 struct bio; 132 struct proc; 133 struct uio; 134 struct knote; 135 struct ucred; 136 137 struct thread; 138 139 typedef int l_open_t (struct cdev *dev, struct tty *tp); 140 typedef int l_close_t (struct tty *tp, int flag); 141 typedef int l_read_t (struct tty *tp, struct uio *uio, int flag); 142 typedef int l_write_t (struct tty *tp, struct uio *uio, int flag); 143 typedef int l_ioctl_t (struct tty *tp, u_long cmd, caddr_t data, int flag, 144 struct ucred *cred); 145 typedef int l_rint_t (int c, struct tty *tp); 146 typedef int l_start_t (struct tty *tp); 147 typedef int l_modem_t (struct tty *tp, int flag); 148 149 /* 150 * Line discipline switch table 151 */ 152 struct linesw { 153 l_open_t *l_open; 154 l_close_t *l_close; 155 l_read_t *l_read; 156 l_write_t *l_write; 157 l_ioctl_t *l_ioctl; 158 l_rint_t *l_rint; 159 l_start_t *l_start; 160 l_modem_t *l_modem; 161 u_char l_hotchar; 162 }; 163 164 #ifdef _KERNEL 165 extern struct linesw linesw[]; 166 extern int nlinesw; 167 168 int ldisc_register (int , struct linesw *); 169 void ldisc_deregister (int); 170 #define LDISC_LOAD -1 /* Loadable line discipline */ 171 #endif 172 173 /* 174 * Swap device table 175 */ 176 struct swdevt { 177 udev_t sw_dev; /* For quasibogus swapdev reporting */ 178 int sw_flags; 179 int sw_nblks; 180 struct vnode *sw_vp; 181 struct cdev *sw_device; 182 }; 183 #define SW_FREED 0x01 184 #define SW_SEQUENTIAL 0x02 185 #define sw_freed sw_flags /* XXX compat */ 186 187 #ifdef _KERNEL 188 189 l_ioctl_t l_nullioctl; 190 l_read_t l_noread; 191 l_write_t l_nowrite; 192 193 struct module; 194 195 struct devsw_module_data { 196 int (*chainevh)(struct module *, int, void *); /* next handler */ 197 void *chainarg; /* arg for next event handler */ 198 /* Do not initialize fields hereafter */ 199 }; 200 201 #define DEV_MODULE(name, evh, arg) \ 202 static moduledata_t name##_mod = { \ 203 #name, \ 204 evh, \ 205 arg \ 206 }; \ 207 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE) 208 209 int count_dev (cdev_t dev); 210 void destroy_dev (cdev_t dev); 211 void release_dev (cdev_t dev); 212 cdev_t get_dev (int x, int y); 213 cdev_t reference_dev (cdev_t dev); 214 struct dev_ops *devsw (cdev_t dev); 215 const char *devtoname (cdev_t dev); 216 void freedev (cdev_t dev); 217 int iszerodev (cdev_t dev); 218 219 int lminor (cdev_t dev); 220 void setconf (void); 221 cdev_t kgetdiskbyname(const char *name); 222 int dev_is_good(cdev_t dev); 223 224 /* 225 * XXX: This included for when DEVFS resurfaces 226 */ 227 228 #define UID_ROOT 0 229 #define UID_BIN 3 230 #define UID_UUCP 66 231 232 #define GID_WHEEL 0 233 #define GID_KMEM 2 234 #define GID_TTY 4 235 #define GID_OPERATOR 5 236 #define GID_BIN 7 237 #define GID_GAMES 13 238 #define GID_DIALER 68 239 240 #endif /* _KERNEL */ 241 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 242 243 #endif /* !_SYS_CONF_H_ */ 244