conf.c revision 1.1
1 /* $NetBSD: conf.c,v 1.1 1995/07/25 23:11:56 chuck Exp $ */ 2 3 /*- 4 * Copyright (c) 1991 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)conf.c 7.9 (Berkeley) 5/28/91 36 */ 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/buf.h> 41 #include <sys/ioctl.h> 42 #include <sys/tty.h> 43 #include <sys/conf.h> 44 #include <sys/vnode.h> 45 46 int ttselect __P((dev_t, int, struct proc *)); 47 48 #ifdef LKM 49 int lkmenodev(); 50 #else 51 #define lkmenodev enodev 52 #endif 53 54 #include "vnd.h" 55 bdev_decl(vnd); 56 bdev_decl(sw); 57 #include "sd.h" 58 bdev_decl(sd); 59 #include "cd.h" 60 bdev_decl(cd); 61 #include "st.h" 62 bdev_decl(st); 63 64 struct bdevsw bdevsw[] = 65 { 66 bdev_notdef(), /* 0 */ 67 bdev_notdef(), /* 1 */ 68 bdev_notdef(), /* 2 */ 69 bdev_swap_init(1,sw), /* 3: swap pseudo-device */ 70 bdev_disk_init(NSD,sd), /* 4: SCSI disk */ 71 bdev_tape_init(NST,st), /* 5: SCSI tape */ 72 bdev_disk_init(NVND,vnd), /* 6: vnode disk driver */ 73 bdev_disk_init(NCD,cd), /* 7: SCSI CD-ROM */ 74 bdev_notdef(), /* 8 */ 75 bdev_lkm_dummy(), /* 9 */ 76 bdev_lkm_dummy(), /* 10 */ 77 bdev_lkm_dummy(), /* 11 */ 78 bdev_lkm_dummy(), /* 12 */ 79 bdev_lkm_dummy(), /* 13 */ 80 bdev_lkm_dummy(), /* 14 */ 81 }; 82 83 int nblkdev = sizeof (bdevsw) / sizeof (bdevsw[0]); 84 85 cdev_decl(cn); 86 cdev_decl(ctty); 87 #define mmread mmrw 88 #define mmwrite mmrw 89 cdev_decl(mm); 90 cdev_decl(sw); 91 92 #include "pty.h" 93 #define ptstty ptytty 94 #define ptsioctl ptyioctl 95 cdev_decl(pts); 96 #define ptctty ptytty 97 #define ptcioctl ptyioctl 98 cdev_decl(ptc); 99 100 cdev_decl(log); 101 cdev_decl(fd); 102 103 #include "zs.h" 104 cdev_decl(zs); 105 106 cdev_decl(sd); 107 cdev_decl(cd); 108 cdev_decl(st); 109 cdev_decl(vnd); 110 111 #include "bpfilter.h" 112 cdev_decl(bpf); 113 114 #include "tun.h" 115 cdev_decl(tun); 116 #ifdef LKM 117 #define NLKM 1 118 #else 119 #define NLKM 0 120 #endif 121 cdev_decl(lkm); 122 123 struct cdevsw cdevsw[] = 124 { 125 cdev_cn_init(1,cn), /* 0: virtual console */ 126 cdev_ctty_init(1,ctty), /* 1: controlling terminal */ 127 cdev_mm_init(1,mm), /* 2: /dev/{null,mem,kmem,...} */ 128 cdev_swap_init(1,sw), /* 3: /dev/drum (swap pseudo-device) */ 129 cdev_tty_init(NPTY,pts), /* 4: pseudo-tty slave */ 130 cdev_ptc_init(NPTY,ptc), /* 5: pseudo-tty master */ 131 cdev_log_init(1,log), /* 6: /dev/klog */ 132 cdev_notdef(), /* 7 */ 133 cdev_disk_init(NSD,sd), /* 8: SCSI disk */ 134 cdev_disk_init(NCD,cd), /* 9: SCSI CD-ROM */ 135 cdev_notdef(), /* 10 */ 136 cdev_notdef(), /* 11: parallel interface */ 137 cdev_tty_init(NZS,zs), /* 12: SCC serial ports */ 138 cdev_notdef(), /* 13 */ 139 cdev_notdef(), /* 14 */ 140 cdev_notdef(), /* 15 */ 141 cdev_notdef(), /* 16 */ 142 cdev_notdef(), /* 17: concatenated disk */ 143 cdev_notdef(), /* 18 */ 144 cdev_disk_init(NVND,vnd), /* 19: vnode disk */ 145 cdev_tape_init(NST,st), /* 20: SCSI tape */ 146 cdev_fd_init(1,fd), /* 21: file descriptor pseudo-dev */ 147 cdev_bpftun_init(NBPFILTER,bpf),/* 22: berkeley packet filter */ 148 cdev_bpftun_init(NTUN,tun), /* 23: network tunnel */ 149 cdev_lkm_init(NLKM,lkm), /* 24: loadable module driver */ 150 cdev_lkm_dummy(), /* 25 */ 151 cdev_lkm_dummy(), /* 26 */ 152 cdev_lkm_dummy(), /* 27 */ 153 cdev_lkm_dummy(), /* 28 */ 154 cdev_lkm_dummy(), /* 29 */ 155 cdev_lkm_dummy(), /* 30 */ 156 }; 157 158 int nchrdev = sizeof (cdevsw) / sizeof (cdevsw[0]); 159 160 int mem_no = 2; /* major device number of memory special file */ 161 162 /* 163 * Swapdev is a fake device implemented 164 * in sw.c used only internally to get to swstrategy. 165 * It cannot be provided to the users, because the 166 * swstrategy routine munches the b_dev and b_blkno entries 167 * before calling the appropriate driver. This would horribly 168 * confuse, e.g. the hashing routines. Instead, /dev/drum is 169 * provided as a character (raw) device. 170 */ 171 dev_t swapdev = makedev(3, 0); 172 173 /* 174 * Returns true if dev is /dev/mem or /dev/kmem. 175 */ 176 iskmemdev(dev) 177 dev_t dev; 178 { 179 180 return (major(dev) == mem_no && minor(dev) < 2); 181 } 182 183 /* 184 * Returns true if dev is /dev/zero. 185 */ 186 iszerodev(dev) 187 dev_t dev; 188 { 189 190 return (major(dev) == mem_no && minor(dev) == 12); 191 } 192 193 /* 194 * Returns true if dev is a disk device. 195 */ 196 isdisk(dev, type) 197 dev_t dev; 198 int type; 199 { 200 201 /* XXXX This needs to be dynamic for LKMs. */ 202 switch (major(dev)) { 203 case 1: 204 case 2: 205 case 4: 206 case 6: 207 return (type == VBLK); 208 case 8: 209 case 9: 210 case 10: 211 case 19: 212 return (type == VCHR); 213 default: 214 return (0); 215 } 216 } 217 218 static int chrtoblktbl[] = { 219 /* XXXX This needs to be dynamic for LKMs. */ 220 /*VCHR*/ /*VBLK*/ 221 /* 0 */ NODEV, 222 /* 1 */ NODEV, 223 /* 2 */ NODEV, 224 /* 3 */ NODEV, 225 /* 4 */ NODEV, 226 /* 5 */ NODEV, 227 /* 6 */ NODEV, 228 /* 7 */ NODEV, 229 /* 8 */ 4, 230 /* 9 */ 7, 231 /* 10 */ NODEV, 232 /* 11 */ NODEV, 233 /* 12 */ NODEV, 234 /* 13 */ NODEV, 235 /* 14 */ NODEV, 236 /* 15 */ NODEV, 237 /* 16 */ NODEV, 238 /* 17 */ NODEV, 239 /* 18 */ NODEV, 240 /* 19 */ 6, 241 /* 20 */ NODEV, 242 /* 21 */ NODEV, 243 /* 22 */ NODEV, 244 }; 245 246 /* 247 * Convert a character device number to a block device number. 248 */ 249 chrtoblk(dev) 250 dev_t dev; 251 { 252 int blkmaj; 253 254 if (major(dev) >= nchrdev) 255 return (NODEV); 256 blkmaj = chrtoblktbl[major(dev)]; 257 if (blkmaj == NODEV) 258 return (NODEV); 259 return (makedev(blkmaj, minor(dev))); 260 } 261 262 /* 263 * This entire table could be autoconfig()ed but that would mean that 264 * the kernel's idea of the console would be out of sync with that of 265 * the standalone boot. I think it best that they both use the same 266 * known algorithm unless we see a pressing need otherwise. 267 */ 268 #include <dev/cons.h> 269 270 #define zscnpollc nullcnpollc 271 cons_decl(zs); 272 273 struct consdev constab[] = { 274 #if NZS > 0 275 cons_init(zs), 276 #endif 277 { 0 }, 278 }; 279
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