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