1 /*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * %sccs.include.386.c% 9 * 10 * @(#)conf.c 5.5 (Berkeley) 01/19/91 11 */ 12 13 #include "param.h" 14 #include "systm.h" 15 #include "buf.h" 16 #include "ioctl.h" 17 #include "tty.h" 18 #include "conf.h" 19 20 int nulldev(); 21 int nodev(); 22 int rawread(), rawwrite(), swstrategy(); 23 24 #include "wd.h" 25 #if NWD > 0 26 int wdopen(),wdclose(),wdstrategy(),wdread(),wdwrite(),wdioctl(); 27 int wddump(),wdsize(); 28 #else 29 #define wdopen nodev 30 #define wdclose nodev 31 #define wdstrategy nodev 32 #define wdread nodev 33 #define wdwrite nodev 34 #define wdioctl nodev 35 #define wddump nodev 36 #define wdsize NULL 37 #endif 38 39 #include "xd.h" 40 #if NXD > 0 41 int xdopen(),xdclose(),xdstrategy(),xdread(),xdwrite(),xdioctl(); 42 int xddump(),xdsize(); 43 #else 44 #define xdopen nodev 45 #define xdclose nodev 46 #define xdstrategy nodev 47 #define xdread nodev 48 #define xdwrite nodev 49 #define xdioctl nodev 50 #define xddump nodev 51 #define xdsize NULL 52 #endif 53 54 #include "wt.h" 55 #if NWT > 0 56 int wtopen(),wtclose(),wtstrategy(),wtread(),wtwrite(),wtioctl(); 57 int wtdump(),wtsize(); 58 #else 59 #define wtopen nodev 60 #define wtclose nodev 61 #define wtstrategy nodev 62 #define wtread nodev 63 #define wtwrite nodev 64 #define wtioctl nodev 65 #define wtdump nodev 66 #define wtsize NULL 67 #endif 68 69 #include "fd.h" 70 #if NFD > 0 71 int Fdopen(),fdclose(),fdstrategy(),fdread(),fdwrite(); 72 #define fdioctl nodev 73 #define fddump nodev 74 #define fdsize NULL 75 #else 76 #define Fdopen nodev 77 #define fdclose nodev 78 #define fdstrategy nodev 79 #define fdread nodev 80 #define fdwrite nodev 81 #define fdioctl nodev 82 #define fddump nodev 83 #define fdsize NULL 84 #endif 85 86 int swstrategy(),swread(),swwrite(); 87 88 struct bdevsw bdevsw[] = 89 { 90 { wdopen, wdclose, wdstrategy, wdioctl, /*0*/ 91 wddump, wdsize, NULL }, 92 { nodev, nodev, swstrategy, nodev, /*1*/ 93 nodev, nodev, NULL }, 94 { Fdopen, fdclose, fdstrategy, fdioctl, /*2*/ 95 fddump, fdsize, NULL }, 96 { wtopen, wtclose, wtstrategy, wtioctl, /*3*/ 97 wtdump, wtsize, B_TAPE }, 98 { xdopen, xdclose, xdstrategy, xdioctl, /*4*/ 99 xddump, xdsize, NULL }, 100 }; 101 int nblkdev = sizeof (bdevsw) / sizeof (bdevsw[0]); 102 103 int cnopen(),cnclose(),cnread(),cnwrite(),cnioctl(); 104 extern struct tty cons; 105 106 int syopen(),syread(),sywrite(),syioctl(),syselect(); 107 108 int mmrw(); 109 #define mmselect seltrue 110 111 #include "pty.h" 112 #if NPTY > 0 113 int ptsopen(),ptsclose(),ptsread(),ptswrite(),ptsstop(); 114 int ptcopen(),ptcclose(),ptcread(),ptcwrite(),ptcselect(); 115 int ptyioctl(); 116 struct tty pt_tty[]; 117 #else 118 #define ptsopen nodev 119 #define ptsclose nodev 120 #define ptsread nodev 121 #define ptswrite nodev 122 #define ptcopen nodev 123 #define ptcclose nodev 124 #define ptcread nodev 125 #define ptcwrite nodev 126 #define ptyioctl nodev 127 #define pt_tty NULL 128 #define ptcselect nodev 129 #define ptsstop nulldev 130 #endif 131 132 #include "com.h" 133 #if NCOM > 0 134 int comopen(),comclose(),comread(),comwrite(),comioctl(); 135 #define comreset nodev 136 extern struct tty com_tty[]; 137 #else 138 #define comopen nodev 139 #define comclose nodev 140 #define comread nodev 141 #define comwrite nodev 142 #define comioctl nodev 143 #define comreset nodev 144 #define com_tty NULL 145 #endif 146 147 int logopen(),logclose(),logread(),logioctl(),logselect(); 148 149 int ttselect(), seltrue(); 150 151 152 struct cdevsw cdevsw[] = 153 { 154 cnopen, cnclose, cnread, cnwrite, /*0*/ 155 cnioctl, nulldev, nulldev, &cons, 156 ttselect, nodev, NULL, 157 syopen, nulldev, syread, sywrite, /*1*/ 158 syioctl, nulldev, nulldev, NULL, 159 syselect, nodev, NULL, 160 nulldev, nulldev, mmrw, mmrw, /*2*/ 161 nodev, nulldev, nulldev, NULL, 162 mmselect, nodev, NULL, 163 wdopen, wdclose, wdread, wdwrite, /*3*/ 164 wdioctl, nodev, nulldev, NULL, 165 seltrue, nodev, wdstrategy, 166 nulldev, nulldev, rawread, rawwrite, /*4*/ 167 nodev, nodev, nulldev, NULL, 168 nodev, nodev, swstrategy, 169 ptsopen, ptsclose, ptsread, ptswrite, /*5*/ 170 ptyioctl, ptsstop, nulldev, pt_tty, 171 ttselect, nodev, NULL, 172 ptcopen, ptcclose, ptcread, ptcwrite, /*6*/ 173 ptyioctl, nulldev, nulldev, pt_tty, 174 ptcselect, nodev, NULL, 175 logopen, logclose, logread, nodev, /*7*/ 176 logioctl, nodev, nulldev, NULL, 177 logselect, nodev, NULL, 178 comopen, comclose, comread, comwrite, /*8*/ 179 comioctl, nodev, comreset, com_tty, 180 ttselect, nodev, NULL, 181 Fdopen, fdclose, fdread, fdwrite, /*9*/ 182 fdioctl, nodev, nulldev, NULL, 183 seltrue, nodev, fdstrategy, 184 wtopen, wtclose, wtread, wtwrite, /*A*/ 185 wtioctl, nodev, nulldev, NULL, 186 seltrue, nodev, wtstrategy, 187 xdopen, xdclose, xdread, xdwrite, /*B*/ 188 xdioctl, nodev, nulldev, NULL, 189 seltrue, nodev, xdstrategy, 190 }; 191 int nchrdev = sizeof (cdevsw) / sizeof (cdevsw[0]); 192 193 int mem_no = 2; /* major device number of memory special file */ 194 195 /* 196 * Swapdev is a fake device implemented 197 * in sw.c used only internally to get to swstrategy. 198 * It cannot be provided to the users, because the 199 * swstrategy routine munches the b_dev and b_blkno entries 200 * before calling the appropriate driver. This would horribly 201 * confuse, e.g. the hashing routines. Instead, /dev/drum is 202 * provided as a character (raw) device. 203 */ 204 dev_t swapdev = makedev(1, 0); 205