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 * $DragonFly: src/sys/sys/conf.h,v 1.18 2007/05/09 00:53:35 dillon Exp $ 37 */ 38 39 #ifndef _SYS_CONF_H_ 40 #define _SYS_CONF_H_ 41 42 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 43 44 #ifndef _SYS_QUEUE_H_ 45 #include <sys/queue.h> 46 #endif 47 #ifndef _SYS_TIME_H_ 48 #include <sys/time.h> 49 #endif 50 #ifndef _SYS_BIOTRACK_H_ 51 #include <sys/biotrack.h> 52 #endif 53 #ifndef _SYS_SYSREF_H_ 54 #include <sys/sysref.h> 55 #endif 56 #ifndef _SYS_EVENT_H_ 57 #include <sys/event.h> 58 #endif 59 #include <libprop/proplib.h> 60 61 #define SPECNAMELEN 63 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 struct cdev *si_parent; 79 LIST_ENTRY(cdev) si_hash; 80 SLIST_HEAD(, vnode) si_hlist; 81 char si_name[SPECNAMELEN + 1]; 82 void *si_drv1; 83 void *si_drv2; 84 struct dev_ops *si_ops; /* device operations vector */ 85 struct dev_ops *si_bops; /* backing devops vector */ 86 int si_iosize_max; /* maximum I/O size (for physio &al) */ 87 struct sysref si_sysref; 88 union { 89 struct { 90 struct tty *__sit_tty; 91 } __si_tty; 92 struct { 93 struct disk *__sid_disk; 94 struct mount *__sid_mountpoint; 95 int __sid_bsize_phys; /* min physical block size */ 96 int __sid_bsize_best; /* optimal block size */ 97 } __si_disk; 98 } __si_u; 99 struct bio_track si_track_read; 100 struct bio_track si_track_write; 101 time_t si_lastread; /* time_uptime */ 102 time_t si_lastwrite; /* time_uptime */ 103 struct vm_object *si_object; /* vm_pager support */ 104 prop_dictionary_t si_dict; 105 struct kqinfo si_kqinfo; /* degenerate delegated knotes */ 106 }; 107 108 #define SI_UNUSED01 0x0001 109 #define SI_HASHED 0x0002 /* in (maj,min) hash table */ 110 #define SI_OVERRIDE 0x0004 /* override uid, gid, and perms */ 111 #define SI_INTERCEPTED 0x0008 /* device ops was intercepted */ 112 #define SI_DEVFS_LINKED 0x0010 113 #define SI_REPROBE_TEST 0x0020 114 #define SI_CANFREE 0x0040 /* basically just a propagated D_CANFREE */ 115 116 #define si_tty __si_u.__si_tty.__sit_tty 117 #define si_disk __si_u.__si_disk.__sid_disk 118 #define si_mountpoint __si_u.__si_disk.__sid_mountpoint 119 #define si_bsize_phys __si_u.__si_disk.__sid_bsize_phys 120 #define si_bsize_best __si_u.__si_disk.__sid_bsize_best 121 122 #define CDEVSW_ALL_MINORS 0 /* mask of 0 always matches 0 */ 123 124 /* 125 * Special device management 126 */ 127 #define SPECHSZ 64 128 #define SPECHASH(rdev) (((unsigned)(minor(rdev)))%SPECHSZ) 129 130 /* 131 * Definitions of device driver entry switches 132 */ 133 134 struct buf; 135 struct bio; 136 struct proc; 137 struct uio; 138 struct knote; 139 struct ucred; 140 141 struct thread; 142 143 typedef int l_open_t (struct cdev *dev, struct tty *tp); 144 typedef int l_close_t (struct tty *tp, int flag); 145 typedef int l_read_t (struct tty *tp, struct uio *uio, int flag); 146 typedef int l_write_t (struct tty *tp, struct uio *uio, int flag); 147 typedef int l_ioctl_t (struct tty *tp, u_long cmd, caddr_t data, int flag, 148 struct ucred *cred); 149 typedef int l_rint_t (int c, struct tty *tp); 150 typedef int l_start_t (struct tty *tp); 151 typedef int l_modem_t (struct tty *tp, int flag); 152 153 /* 154 * Line discipline switch table 155 */ 156 struct linesw { 157 l_open_t *l_open; 158 l_close_t *l_close; 159 l_read_t *l_read; 160 l_write_t *l_write; 161 l_ioctl_t *l_ioctl; 162 l_rint_t *l_rint; 163 l_start_t *l_start; 164 l_modem_t *l_modem; 165 u_char l_hotchar; 166 }; 167 168 #ifdef _KERNEL 169 extern struct linesw linesw[]; 170 extern int nlinesw; 171 172 int ldisc_register (int , struct linesw *); 173 void ldisc_deregister (int); 174 #define LDISC_LOAD -1 /* Loadable line discipline */ 175 #endif 176 177 /* 178 * Swap device table 179 */ 180 struct swdevt { 181 udev_t sw_dev; /* For quasibogus swapdev reporting */ 182 int sw_flags; 183 int sw_nblks; /* Number of swap blocks on device */ 184 int sw_nused; /* swap blocks used on device */ 185 struct vnode *sw_vp; 186 struct cdev *sw_device; 187 }; 188 189 #define SW_FREED 0x01 190 #define SW_SEQUENTIAL 0x02 191 #define SW_CLOSING 0x04 192 #define sw_freed sw_flags /* XXX compat */ 193 194 #ifdef _KERNEL 195 196 l_ioctl_t l_nullioctl; 197 l_read_t l_noread; 198 l_write_t l_nowrite; 199 200 struct module; 201 202 struct devsw_module_data { 203 int (*chainevh)(struct module *, int, void *); /* next handler */ 204 void *chainarg; /* arg for next event handler */ 205 /* Do not initialize fields hereafter */ 206 }; 207 208 #define DEV_MODULE(name, evh, arg) \ 209 static moduledata_t name##_mod = { \ 210 #name, \ 211 evh, \ 212 arg \ 213 }; \ 214 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE) 215 216 #define dev2unit(x) ((minor(x) & 0xff) | (minor(x) >> 8)) 217 218 int count_dev (cdev_t dev); 219 void destroy_dev (cdev_t dev); 220 void release_dev (cdev_t dev); 221 cdev_t get_dev (int x, int y); 222 cdev_t reference_dev (cdev_t dev); 223 struct dev_ops *devsw (cdev_t dev); 224 const char *devtoname (cdev_t dev); 225 void freedev (cdev_t dev); 226 int iszerodev (cdev_t dev); 227 228 int lminor (cdev_t dev); 229 void setconf (void); 230 cdev_t kgetdiskbyname(const char *name); 231 int dev_is_good(cdev_t dev); 232 233 /* 234 * XXX: This included for when DEVFS resurfaces 235 */ 236 237 #define UID_ROOT 0 238 #define UID_BIN 3 239 #define UID_UUCP 66 240 241 #define GID_WHEEL 0 242 #define GID_KMEM 2 243 #define GID_TTY 4 244 #define GID_OPERATOR 5 245 #define GID_BIN 7 246 #define GID_GAMES 13 247 #define GID_DIALER 68 248 249 #endif /* _KERNEL */ 250 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 251 252 #endif /* !_SYS_CONF_H_ */ 253