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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)conf.h 8.5 (Berkeley) 1/9/95 35 * $FreeBSD: src/sys/sys/conf.h,v 1.103.2.6 2002/03/11 01:14:55 dd Exp $ 36 */ 37 38 #ifndef _SYS_CONF_H_ 39 #define _SYS_CONF_H_ 40 41 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 42 43 #ifndef _SYS_QUEUE_H_ 44 #include <sys/queue.h> 45 #endif 46 #ifndef _SYS_TIME_H_ 47 #include <sys/time.h> 48 #endif 49 #ifndef _SYS_BIOTRACK_H_ 50 #include <sys/biotrack.h> 51 #endif 52 #ifndef _SYS_SYSREF_H_ 53 #include <sys/sysref.h> 54 #endif 55 #ifndef _SYS_EVENT_H_ 56 #include <sys/event.h> 57 #endif 58 #include <libprop/proplib.h> 59 #include <sys/param.h> 60 61 struct tty; 62 struct disk; 63 struct vnode; 64 struct dev_ops; 65 struct vm_object; 66 67 struct cdev { 68 u_int si_flags; 69 __uint64_t si_inode; 70 uid_t si_uid; 71 gid_t si_gid; 72 int si_perms; 73 TAILQ_ENTRY(cdev) link; 74 int si_uminor; 75 int si_umajor; 76 struct cdev *si_parent; 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 struct dev_ops *si_bops; /* backing devops vector */ 84 int si_iosize_max; /* maximum I/O size (for physio &al) */ 85 struct sysref si_sysref; 86 union { 87 struct { 88 struct tty *__sit_tty; 89 } __si_tty; 90 struct { 91 struct disk *__sid_disk; 92 struct mount *__sid_mountpoint; 93 int __sid_bsize_phys; /* min physical block size */ 94 int __sid_bsize_best; /* optimal block size */ 95 } __si_disk; 96 } __si_u; 97 struct bio_track si_track_read; 98 struct bio_track si_track_write; 99 time_t si_lastread; /* time_uptime */ 100 time_t si_lastwrite; /* time_uptime */ 101 struct vm_object *si_object; /* vm_pager support */ 102 prop_dictionary_t si_dict; 103 struct kqinfo si_kqinfo; /* degenerate delegated knotes */ 104 }; 105 106 #define SI_UNUSED01 0x0001 107 #define SI_HASHED 0x0002 /* in (maj,min) hash table */ 108 #define SI_OVERRIDE 0x0004 /* override uid, gid, and perms */ 109 #define SI_INTERCEPTED 0x0008 /* device ops was intercepted */ 110 #define SI_DEVFS_LINKED 0x0010 111 #define SI_REPROBE_TEST 0x0020 112 #define SI_CANFREE 0x0040 /* basically just a propagated D_CANFREE */ 113 114 #define si_tty __si_u.__si_tty.__sit_tty 115 #define si_disk __si_u.__si_disk.__sid_disk 116 #define si_mountpoint __si_u.__si_disk.__sid_mountpoint 117 #define si_bsize_phys __si_u.__si_disk.__sid_bsize_phys 118 #define si_bsize_best __si_u.__si_disk.__sid_bsize_best 119 120 #define CDEVSW_ALL_MINORS 0 /* mask of 0 always matches 0 */ 121 122 /* 123 * Special device management 124 */ 125 #define SPECHSZ 64 126 #define SPECHASH(rdev) (((unsigned)(minor(rdev)))%SPECHSZ) 127 128 /* 129 * Definitions of device driver entry switches 130 */ 131 132 struct buf; 133 struct bio; 134 struct proc; 135 struct uio; 136 struct knote; 137 struct ucred; 138 139 struct thread; 140 141 typedef int l_open_t (struct cdev *dev, struct tty *tp); 142 typedef int l_close_t (struct tty *tp, int flag); 143 typedef int l_read_t (struct tty *tp, struct uio *uio, int flag); 144 typedef int l_write_t (struct tty *tp, struct uio *uio, int flag); 145 typedef int l_ioctl_t (struct tty *tp, u_long cmd, caddr_t data, int flag, 146 struct ucred *cred); 147 typedef int l_rint_t (int c, struct tty *tp); 148 typedef int l_start_t (struct tty *tp); 149 typedef int l_modem_t (struct tty *tp, int flag); 150 151 /* 152 * Line discipline switch table 153 */ 154 struct linesw { 155 l_open_t *l_open; 156 l_close_t *l_close; 157 l_read_t *l_read; 158 l_write_t *l_write; 159 l_ioctl_t *l_ioctl; 160 l_rint_t *l_rint; 161 l_start_t *l_start; 162 l_modem_t *l_modem; 163 u_char l_hotchar; 164 }; 165 166 #ifdef _KERNEL 167 extern struct linesw linesw[]; 168 extern int nlinesw; 169 170 int ldisc_register (int , struct linesw *); 171 void ldisc_deregister (int); 172 #define LDISC_LOAD -1 /* Loadable line discipline */ 173 #endif 174 175 /* 176 * Swap device table 177 */ 178 struct swdevt { 179 dev_t sw_dev; /* For quasibogus swapdev reporting */ 180 int sw_flags; 181 int sw_nblks; /* Number of swap blocks on device */ 182 int sw_nused; /* swap blocks used on device */ 183 struct vnode *sw_vp; 184 struct cdev *sw_device; 185 }; 186 187 #define SW_FREED 0x01 188 #define SW_SEQUENTIAL 0x02 189 #define SW_CLOSING 0x04 190 #define sw_freed sw_flags /* XXX compat */ 191 192 #ifdef _KERNEL 193 194 l_ioctl_t l_nullioctl; 195 l_read_t l_noread; 196 l_write_t l_nowrite; 197 198 struct module; 199 200 struct devsw_module_data { 201 int (*chainevh)(struct module *, int, void *); /* next handler */ 202 void *chainarg; /* arg for next event handler */ 203 /* Do not initialize fields hereafter */ 204 }; 205 206 #define DEV_MODULE(name, evh, arg) \ 207 static moduledata_t name##_mod = { \ 208 #name, \ 209 evh, \ 210 arg \ 211 }; \ 212 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE) 213 214 #define dev2unit(x) ((minor(x) & 0xff) | (minor(x) >> 8)) 215 216 int count_dev (cdev_t dev); 217 void destroy_dev (cdev_t dev); 218 void release_dev (cdev_t dev); 219 cdev_t reference_dev (cdev_t dev); 220 const char *devtoname (cdev_t dev); 221 int iszerodev (cdev_t dev); 222 223 int lminor (cdev_t dev); 224 cdev_t kgetdiskbyname(const char *name); 225 int dev_is_good(cdev_t dev); 226 227 /* 228 * XXX: This included for when DEVFS resurfaces 229 */ 230 231 #define UID_ROOT 0 232 #define UID_BIN 3 233 #define UID_UUCP 66 234 235 #define GID_WHEEL 0 236 #define GID_KMEM 2 237 #define GID_TTY 4 238 #define GID_OPERATOR 5 239 #define GID_BIN 7 240 #define GID_GAMES 13 241 #define GID_VIDEO 44 242 #define GID_DIALER 68 243 #define GID_NVMM 90 244 245 #endif /* _KERNEL */ 246 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 247 248 #endif /* !_SYS_CONF_H_ */ 249