conf.c revision 1.6
1 /* $NetBSD: conf.c,v 1.6 1996/05/20 01:16:50 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 bdev_decl(sw); 55 #include "sd.h" 56 bdev_decl(sd); 57 #include "ccd.h" 58 bdev_decl(ccd); 59 #include "vnd.h" 60 bdev_decl(vnd); 61 #include "st.h" 62 bdev_decl(st); 63 #include "cd.h" 64 bdev_decl(cd); 65 #include "rd.h" 66 bdev_decl(rd); 67 68 struct bdevsw bdevsw[] = 69 { 70 bdev_notdef(), /* 0 */ 71 bdev_notdef(), /* 1 */ 72 bdev_notdef(), /* 2 */ 73 bdev_swap_init(1,sw), /* 3: swap pseudo-device */ 74 bdev_disk_init(NSD,sd), /* 4: SCSI disk */ 75 bdev_disk_init(NCCD,ccd), /* 5: concatenated disk driver */ 76 bdev_disk_init(NVND,vnd), /* 6: vnode disk driver */ 77 bdev_tape_init(NST,st), /* 7: SCSI tape */ 78 bdev_disk_init(NCD,cd), /* 8: SCSI CD-ROM */ 79 bdev_disk_init(NRD,rd), /* 9: RAM disk - for install tape */ 80 bdev_lkm_dummy(), /* 10 */ 81 bdev_lkm_dummy(), /* 11 */ 82 bdev_lkm_dummy(), /* 12 */ 83 bdev_lkm_dummy(), /* 13 */ 84 bdev_lkm_dummy(), /* 14 */ 85 bdev_lkm_dummy(), /* 15 */ 86 }; 87 88 int nblkdev = sizeof (bdevsw) / sizeof (bdevsw[0]); 89 90 cdev_decl(cn); 91 cdev_decl(ctty); 92 #define mmread mmrw 93 #define mmwrite mmrw 94 cdev_decl(mm); 95 cdev_decl(sw); 96 97 #include "pty.h" 98 #define ptstty ptytty 99 #define ptsioctl ptyioctl 100 cdev_decl(pts); 101 #define ptctty ptytty 102 #define ptcioctl ptyioctl 103 cdev_decl(ptc); 104 105 cdev_decl(log); 106 cdev_decl(fd); 107 108 #include "zstty.h" 109 cdev_decl(zs); 110 111 cdev_decl(sd); 112 cdev_decl(cd); 113 cdev_decl(st); 114 cdev_decl(vnd); 115 cdev_decl(ccd); 116 117 dev_decl(filedesc,open); 118 119 #include "bpfilter.h" 120 cdev_decl(bpf); 121 122 #include "tun.h" 123 cdev_decl(tun); 124 #ifdef LKM 125 #define NLKM 1 126 #else 127 #define NLKM 0 128 #endif 129 cdev_decl(lkm); 130 131 struct cdevsw cdevsw[] = 132 { 133 cdev_cn_init(1,cn), /* 0: virtual console */ 134 cdev_ctty_init(1,ctty), /* 1: controlling terminal */ 135 cdev_mm_init(1,mm), /* 2: /dev/{null,mem,kmem,...} */ 136 cdev_swap_init(1,sw), /* 3: /dev/drum (swap pseudo-device) */ 137 cdev_tty_init(NPTY,pts), /* 4: pseudo-tty slave */ 138 cdev_ptc_init(NPTY,ptc), /* 5: pseudo-tty master */ 139 cdev_log_init(1,log), /* 6: /dev/klog */ 140 cdev_notdef(), /* 7 */ 141 cdev_disk_init(NSD,sd), /* 8: SCSI disk */ 142 cdev_notdef(), /* 9 */ 143 cdev_notdef(), /* 10 */ 144 cdev_notdef(), /* 11: parallel interface */ 145 cdev_tty_init(NZSTTY,zs), /* 12: SCC serial ports */ 146 cdev_notdef(), /* 13 */ 147 cdev_notdef(), /* 14 */ 148 cdev_notdef(), /* 15 */ 149 cdev_notdef(), /* 16 */ 150 cdev_disk_init(NCCD,ccd), /* 17: concatenated disk driver */ 151 cdev_disk_init(NCD,cd), /* 18: SCSI CD-ROM */ 152 cdev_disk_init(NVND,vnd), /* 19: vnode disk */ 153 cdev_tape_init(NST,st), /* 20: SCSI tape */ 154 cdev_fd_init(1,filedesc), /* 21: file descriptor pseudo-dev */ 155 cdev_bpftun_init(NBPFILTER,bpf),/* 22: berkeley packet filter */ 156 cdev_bpftun_init(NTUN,tun), /* 23: network tunnel */ 157 cdev_lkm_init(NLKM,lkm), /* 24: loadable module driver */ 158 cdev_lkm_dummy(), /* 25 */ 159 cdev_lkm_dummy(), /* 26 */ 160 cdev_lkm_dummy(), /* 27 */ 161 cdev_lkm_dummy(), /* 28 */ 162 cdev_lkm_dummy(), /* 29 */ 163 cdev_lkm_dummy(), /* 30 */ 164 }; 165 166 int nchrdev = sizeof (cdevsw) / sizeof (cdevsw[0]); 167 168 int mem_no = 2; /* major device number of memory special file */ 169 170 /* 171 * Swapdev is a fake device implemented 172 * in sw.c used only internally to get to swstrategy. 173 * It cannot be provided to the users, because the 174 * swstrategy routine munches the b_dev and b_blkno entries 175 * before calling the appropriate driver. This would horribly 176 * confuse, e.g. the hashing routines. Instead, /dev/drum is 177 * provided as a character (raw) device. 178 */ 179 dev_t swapdev = makedev(3, 0); 180 181 /* 182 * Returns true if dev is /dev/mem or /dev/kmem. 183 */ 184 iskmemdev(dev) 185 dev_t dev; 186 { 187 188 return (major(dev) == mem_no && minor(dev) < 2); 189 } 190 191 /* 192 * Returns true if dev is /dev/zero. 193 */ 194 iszerodev(dev) 195 dev_t dev; 196 { 197 198 return (major(dev) == mem_no && minor(dev) == 12); 199 } 200 201 /* 202 * Returns true if dev is a disk device. 203 */ 204 isdisk(dev, type) 205 dev_t dev; 206 int type; 207 { 208 209 /* XXXX This needs to be dynamic for LKMs. */ 210 switch (major(dev)) { 211 case 1: 212 case 2: 213 case 4: 214 case 6: 215 case 15: 216 return (type == VBLK); 217 case 8: 218 case 9: 219 case 10: 220 case 17: 221 case 19: 222 return (type == VCHR); 223 default: 224 return (0); 225 } 226 } 227 228 static int chrtoblktbl[] = { 229 /* XXXX This needs to be dynamic for LKMs. */ 230 /*VCHR*/ /*VBLK*/ 231 /* 0 */ NODEV, 232 /* 1 */ NODEV, 233 /* 2 */ NODEV, 234 /* 3 */ NODEV, 235 /* 4 */ NODEV, 236 /* 5 */ NODEV, 237 /* 6 */ NODEV, 238 /* 7 */ NODEV, 239 /* 8 */ 4, 240 /* 9 */ 7, 241 /* 10 */ NODEV, 242 /* 11 */ NODEV, 243 /* 12 */ NODEV, 244 /* 13 */ NODEV, 245 /* 14 */ NODEV, 246 /* 15 */ NODEV, 247 /* 16 */ NODEV, 248 /* 17 */ 15, 249 /* 18 */ NODEV, 250 /* 19 */ 6, 251 /* 20 */ NODEV, 252 /* 21 */ NODEV, 253 /* 22 */ NODEV, 254 }; 255 256 /* 257 * Convert a character device number to a block device number. 258 */ 259 chrtoblk(dev) 260 dev_t dev; 261 { 262 int blkmaj; 263 264 if (major(dev) >= nchrdev) 265 return (NODEV); 266 blkmaj = chrtoblktbl[major(dev)]; 267 if (blkmaj == NODEV) 268 return (NODEV); 269 return (makedev(blkmaj, minor(dev))); 270 } 271 272 /* 273 * This entire table could be autoconfig()ed but that would mean that 274 * the kernel's idea of the console would be out of sync with that of 275 * the standalone boot. I think it best that they both use the same 276 * known algorithm unless we see a pressing need otherwise. 277 */ 278 #include <dev/cons.h> 279 280 #define zsc_pcccngetc zscngetc 281 #define zsc_pcccnputc zscnputc 282 #define zsc_pcccnpollc nullcnpollc 283 #include "zsc_pcc.h" 284 cons_decl(zsc_pcc); 285 286 struct consdev constab[] = { 287 #if NZSC_PCC > 0 288 cons_init(zsc_pcc), 289 #endif 290 { 0 }, 291 }; 292
Indexes created Mon Sep 29 21:09:56 GMT 2025