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 1.15 2006/09/26 18:57:14 dillon Exp $ 41 */ 42 43 #ifndef _SYS_CONF_H_ 44 #define _SYS_CONF_H_ 45 46 #include <sys/queue.h> 47 #include <sys/time.h> 48 #include <sys/biotrack.h> 49 50 #define SPECNAMELEN 15 51 52 struct tty; 53 struct disk; 54 struct vnode; 55 struct dev_ops; 56 57 struct cdev { 58 u_int si_flags; 59 udev_t si_udev; 60 LIST_ENTRY(cdev) si_hash; 61 SLIST_HEAD(, vnode) si_hlist; 62 char si_name[SPECNAMELEN + 1]; 63 void *si_drv1; 64 void *si_drv2; 65 struct dev_ops *si_ops; /* device operations vector */ 66 int si_iosize_max; /* maximum I/O size (for physio &al) */ 67 int si_refs; 68 union { 69 struct { 70 struct tty *__sit_tty; 71 } __si_tty; 72 struct { 73 struct disk *__sid_disk; 74 struct mount *__sid_mountpoint; 75 int __sid_bsize_phys; /* min physical block size */ 76 int __sid_bsize_best; /* optimal block size */ 77 } __si_disk; 78 } __si_u; 79 struct bio_track si_track_read; 80 struct bio_track si_track_write; 81 time_t si_lastread; /* time_second */ 82 time_t si_lastwrite; /* time_second */ 83 }; 84 85 #define SI_STASHED 0x0001 /* created in stashed storage */ 86 #define SI_HASHED 0x0002 /* in (maj,min) hash table */ 87 #define SI_ADHOC 0x0004 /* created via make_adhoc_dev() or udev2dev() */ 88 #define SI_INTERCEPTED 0x0008 /* device ops was intercepted */ 89 90 #define si_tty __si_u.__si_tty.__sit_tty 91 #define si_disk __si_u.__si_disk.__sid_disk 92 #define si_mountpoint __si_u.__si_disk.__sid_mountpoint 93 #define si_bsize_phys __si_u.__si_disk.__sid_bsize_phys 94 #define si_bsize_best __si_u.__si_disk.__sid_bsize_best 95 96 #define CDEVSW_ALL_MINORS 0 /* mask of 0 always matches 0 */ 97 98 /* 99 * Special device management 100 */ 101 #define SPECHSZ 64 102 #define SPECHASH(rdev) (((unsigned)(minor(rdev)))%SPECHSZ) 103 104 /* 105 * Definitions of device driver entry switches 106 */ 107 108 struct buf; 109 struct bio; 110 struct proc; 111 struct uio; 112 struct knote; 113 struct ucred; 114 115 struct thread; 116 117 typedef int l_open_t (struct cdev *dev, struct tty *tp); 118 typedef int l_close_t (struct tty *tp, int flag); 119 typedef int l_read_t (struct tty *tp, struct uio *uio, int flag); 120 typedef int l_write_t (struct tty *tp, struct uio *uio, int flag); 121 typedef int l_ioctl_t (struct tty *tp, u_long cmd, caddr_t data, int flag, 122 struct ucred *cred); 123 typedef int l_rint_t (int c, struct tty *tp); 124 typedef int l_start_t (struct tty *tp); 125 typedef int l_modem_t (struct tty *tp, int flag); 126 127 /* 128 * Line discipline switch table 129 */ 130 struct linesw { 131 l_open_t *l_open; 132 l_close_t *l_close; 133 l_read_t *l_read; 134 l_write_t *l_write; 135 l_ioctl_t *l_ioctl; 136 l_rint_t *l_rint; 137 l_start_t *l_start; 138 l_modem_t *l_modem; 139 u_char l_hotchar; 140 }; 141 142 #ifdef _KERNEL 143 extern struct linesw linesw[]; 144 extern int nlinesw; 145 146 int ldisc_register (int , struct linesw *); 147 void ldisc_deregister (int); 148 #define LDISC_LOAD -1 /* Loadable line discipline */ 149 #endif 150 151 /* 152 * Swap device table 153 */ 154 struct swdevt { 155 udev_t sw_dev; /* For quasibogus swapdev reporting */ 156 int sw_flags; 157 int sw_nblks; 158 struct vnode *sw_vp; 159 struct cdev *sw_device; 160 }; 161 #define SW_FREED 0x01 162 #define SW_SEQUENTIAL 0x02 163 #define sw_freed sw_flags /* XXX compat */ 164 165 #ifdef _KERNEL 166 167 #define NUMCDEVSW 256 168 169 l_ioctl_t l_nullioctl; 170 l_read_t l_noread; 171 l_write_t l_nowrite; 172 173 struct module; 174 175 struct devsw_module_data { 176 int (*chainevh)(struct module *, int, void *); /* next handler */ 177 void *chainarg; /* arg for next event handler */ 178 /* Do not initialize fields hereafter */ 179 }; 180 181 #define DEV_MODULE(name, evh, arg) \ 182 static moduledata_t name##_mod = { \ 183 #name, \ 184 evh, \ 185 arg \ 186 }; \ 187 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE) 188 189 int count_dev (cdev_t dev); 190 int count_udev (udev_t dev); 191 void destroy_dev (cdev_t dev); 192 void release_dev (cdev_t dev); 193 cdev_t reference_dev (cdev_t dev); 194 struct dev_ops *devsw (cdev_t dev); 195 const char *devtoname (cdev_t dev); 196 void freedev (cdev_t dev); 197 int iszerodev (cdev_t dev); 198 199 cdev_t make_sub_dev (cdev_t dev, int minor); 200 int lminor (cdev_t dev); 201 void setconf (void); 202 cdev_t kgetdiskbyname(const char *name); 203 int dev_is_good(cdev_t dev); 204 205 /* 206 * XXX: This included for when DEVFS resurfaces 207 */ 208 209 #define UID_ROOT 0 210 #define UID_BIN 3 211 #define UID_UUCP 66 212 213 #define GID_WHEEL 0 214 #define GID_KMEM 2 215 #define GID_OPERATOR 5 216 #define GID_BIN 7 217 #define GID_GAMES 13 218 #define GID_DIALER 68 219 220 #endif /* _KERNEL */ 221 222 #endif /* !_SYS_CONF_H_ */ 223