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1.1 ! root 1: /* ! 2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. ! 3: * ! 4: * @APPLE_LICENSE_HEADER_START@ ! 5: * ! 6: * The contents of this file constitute Original Code as defined in and ! 7: * are subject to the Apple Public Source License Version 1.1 (the ! 8: * "License"). You may not use this file except in compliance with the ! 9: * License. Please obtain a copy of the License at ! 10: * http://www.apple.com/publicsource and read it before using this file. ! 11: * ! 12: * This Original Code and all software distributed under the License are ! 13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER ! 14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, ! 15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, ! 16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the ! 17: * License for the specific language governing rights and limitations ! 18: * under the License. ! 19: * ! 20: * @APPLE_LICENSE_HEADER_END@ ! 21: */ ! 22: /* ! 23: * Copyright (c) 1997 by Apple Computer, Inc., all rights reserved ! 24: * Copyright (c) 1993 NeXT Computer, Inc. ! 25: * ! 26: * UNIX Device switch tables. ! 27: * ! 28: * HISTORY ! 29: * ! 30: * 30 July 1997 Umesh Vaishampayan ([email protected]) ! 31: * enabled file descriptor pseudo-device. ! 32: * 18 June 1993 ? at NeXT ! 33: * Cleaned up a lot of stuff in this file. ! 34: */ ! 35: ! 36: #include <sys/param.h> ! 37: #include <sys/systm.h> ! 38: #include <sys/buf.h> ! 39: #include <sys/ioctl.h> ! 40: #include <sys/tty.h> ! 41: #include <sys/conf.h> ! 42: ! 43: ! 44: extern int nulldev(); ! 45: ! 46: struct bdevsw bdevsw[] = ! 47: { ! 48: /* ! 49: * For block devices, every other block of 8 slots is ! 50: * reserved to NeXT. The other slots are available for ! 51: * the user. This way we can both add new entries without ! 52: * running into each other. Be sure to fill in NeXT's ! 53: * 8 reserved slots when you jump over us -- we'll do the ! 54: * same for you. ! 55: */ ! 56: ! 57: /* 0 - 7 are reserved to NeXT */ ! 58: ! 59: NO_BDEVICE, /* 0*/ ! 60: NO_BDEVICE, /* 1*/ ! 61: NO_BDEVICE, /* 2*/ ! 62: NO_BDEVICE, /* 3*/ ! 63: NO_BDEVICE, /* 4*/ ! 64: NO_BDEVICE, /* 5*/ ! 65: NO_BDEVICE, /* 6*/ ! 66: NO_BDEVICE, /* 7*/ ! 67: ! 68: /* 8 - 15 are reserved to the user */ ! 69: NO_BDEVICE, /* 8*/ ! 70: NO_BDEVICE, /* 9*/ ! 71: NO_BDEVICE, /*10*/ ! 72: NO_BDEVICE, /*11*/ ! 73: NO_BDEVICE, /*12*/ ! 74: NO_BDEVICE, /*13*/ ! 75: NO_BDEVICE, /*14*/ ! 76: NO_BDEVICE, /*15*/ ! 77: ! 78: /* 16 - 23 are reserved to NeXT */ ! 79: NO_BDEVICE, /*16*/ ! 80: NO_BDEVICE, /*17*/ ! 81: NO_BDEVICE, /*18*/ ! 82: NO_BDEVICE, /*18*/ ! 83: NO_BDEVICE, /*20*/ ! 84: NO_BDEVICE, /*21*/ ! 85: NO_BDEVICE, /*22*/ ! 86: NO_BDEVICE, /*23*/ ! 87: }; ! 88: ! 89: int nblkdev = sizeof (bdevsw) / sizeof (bdevsw[0]); ! 90: ! 91: extern struct tty *km_tty[]; ! 92: extern int consopen(), consclose(), consread(), conswrite(), consioctl(), ! 93: consselect(), cons_getc(), cons_putc(); ! 94: extern int kmopen(),kmclose(),kmread(),kmwrite(),kmioctl(), ! 95: kmgetc(), kmputc(dev_t dev, char c); ! 96: ! 97: extern int cttyopen(), cttyread(), cttywrite(), cttyioctl(), cttyselect(); ! 98: ! 99: extern int mmread(),mmwrite(); ! 100: #define mmselect seltrue ! 101: ! 102: #if 1 ! 103: #define NPTY 32 ! 104: #else /* 1 */ ! 105: #include <pty.h> ! 106: #endif /* 1 */ ! 107: #if NPTY > 0 ! 108: extern struct tty *pt_tty[]; ! 109: extern int ptsopen(),ptsclose(),ptsread(),ptswrite(),ptsstop(),ptsputc(); ! 110: extern int ptcopen(),ptcclose(),ptcread(),ptcwrite(),ptcselect(), ! 111: ptyioctl(); ! 112: #else ! 113: #define ptsopen eno_opcl ! 114: #define ptsclose eno_opcl ! 115: #define ptsread eno_rdwrt ! 116: #define ptswrite eno_rdwrt ! 117: #define ptsstop nulldev ! 118: #define ptsputc nulldev ! 119: ! 120: #define ptcopen eno_opcl ! 121: #define ptcclose eno_opcl ! 122: #define ptcread eno_rdwrt ! 123: #define ptcwrite eno_rdwrt ! 124: #define ptcselect eno_select ! 125: #define ptyioctl eno_ioctl ! 126: #endif ! 127: ! 128: extern int logopen(),logclose(),logread(),logioctl(),logselect(); ! 129: extern int nvopen(), nvclose(),nvread(), nvwrite(); ! 130: extern int seltrue(); ! 131: ! 132: struct cdevsw cdevsw[] = ! 133: { ! 134: /* ! 135: * For character devices, every other block of 16 slots is ! 136: * reserved to NeXT. The other slots are available for ! 137: * the user. This way we can both add new entries without ! 138: * running into each other. Be sure to fill in NeXT's ! 139: * 16 reserved slots when you jump over us -- we'll do the ! 140: * same for you. ! 141: */ ! 142: ! 143: /* 0 - 15 are reserved to NeXT */ ! 144: ! 145: { ! 146: consopen, consclose, consread, conswrite, /* 0*/ ! 147: consioctl, nulldev, nulldev, 0, consselect, ! 148: eno_mmap, eno_strat, cons_getc, cons_putc, D_TTY ! 149: }, ! 150: NO_CDEVICE, /* 1*/ ! 151: { ! 152: cttyopen, nulldev, cttyread, cttywrite, /* 2*/ ! 153: cttyioctl, nulldev, nulldev, 0, cttyselect, ! 154: eno_mmap, eno_strat, eno_getc, eno_putc, D_TTY ! 155: }, ! 156: { ! 157: nulldev, nulldev, mmread, mmwrite, /* 3*/ ! 158: eno_ioctl, nulldev, nulldev, 0, mmselect, ! 159: eno_mmap, eno_strat, eno_getc, eno_putc, 0 ! 160: }, ! 161: { ! 162: ptsopen, ptsclose, ptsread, ptswrite, /* 4*/ ! 163: ptyioctl, ptsstop, nulldev, pt_tty, ttselect, ! 164: eno_mmap, eno_strat, eno_getc, eno_putc, D_TTY ! 165: }, ! 166: { ! 167: ptcopen, ptcclose, ptcread, ptcwrite, /* 5*/ ! 168: ptyioctl, nulldev, nulldev, 0, ptcselect, ! 169: eno_mmap, eno_strat, eno_getc, eno_putc, D_TTY ! 170: }, ! 171: { ! 172: logopen, logclose, logread, eno_rdwrt, /* 6*/ ! 173: logioctl, eno_stop, nulldev, 0, logselect, ! 174: eno_mmap, eno_strat, eno_getc, eno_putc, 0 ! 175: }, ! 176: NO_CDEVICE, /* 7*/ ! 177: NO_CDEVICE, /* 8*/ ! 178: NO_CDEVICE, /* 9*/ ! 179: NO_CDEVICE, /*10*/ ! 180: NO_CDEVICE, /*11*/ ! 181: { ! 182: kmopen, kmclose, kmread, kmwrite, /*12*/ ! 183: kmioctl, nulldev, nulldev, km_tty, ttselect, ! 184: eno_mmap, eno_strat, kmgetc, kmputc, 0 ! 185: }, ! 186: NO_CDEVICE, /*13*/ ! 187: NO_CDEVICE, /*14*/ ! 188: NO_CDEVICE, /*15*/ ! 189: ! 190: /* 16 - 31 are reserved to the user */ ! 191: NO_CDEVICE, /*16*/ ! 192: NO_CDEVICE, /*17*/ ! 193: NO_CDEVICE, /*18*/ ! 194: NO_CDEVICE, /*19*/ ! 195: NO_CDEVICE, /*20*/ ! 196: NO_CDEVICE, /*21*/ ! 197: NO_CDEVICE, /*22*/ ! 198: NO_CDEVICE, /*23*/ ! 199: NO_CDEVICE, /*24*/ ! 200: NO_CDEVICE, /*25*/ ! 201: NO_CDEVICE, /*26*/ ! 202: NO_CDEVICE, /*27*/ ! 203: NO_CDEVICE, /*28*/ ! 204: NO_CDEVICE, /*29*/ ! 205: NO_CDEVICE, /*30*/ ! 206: NO_CDEVICE, /*31*/ ! 207: ! 208: /* 32 - 47 are reserved to NeXT */ ! 209: NO_CDEVICE, /*32*/ ! 210: NO_CDEVICE, /*33*/ ! 211: NO_CDEVICE, /*34*/ ! 212: NO_CDEVICE, /*35*/ ! 213: NO_CDEVICE, /*36*/ ! 214: { ! 215: nvopen, nvclose, nvread, nvwrite, /*37*/ ! 216: eno_ioctl, nulldev, nulldev, 0, seltrue, ! 217: eno_mmap, eno_strat, eno_getc, eno_putc, 0 ! 218: }, ! 219: NO_CDEVICE, /*38*/ ! 220: NO_CDEVICE, /*39*/ ! 221: NO_CDEVICE, /*40*/ ! 222: /* 41 used to be for fd */ ! 223: NO_CDEVICE, /*41*/ ! 224: NO_CDEVICE, /*42*/ ! 225: }; ! 226: int nchrdev = sizeof (cdevsw) / sizeof (cdevsw[0]); ! 227: ! 228: ! 229: #include <sys/vnode.h> /* for VCHR and VBLK */ ! 230: /* ! 231: * return true if a disk ! 232: */ ! 233: int ! 234: isdisk(dev, type) ! 235: dev_t dev; ! 236: int type; ! 237: { ! 238: switch (major(dev)) { ! 239: case 1: /* fd: floppy */ ! 240: case 6: /* sd: scsi disk */ ! 241: case 3: /* ide: */ ! 242: if (type == VBLK) ! 243: return(1); ! 244: break; ! 245: case 14: /* sd: scsi disk */ ! 246: case 41: /* fd: floppy */ ! 247: if (type == VCHR) ! 248: return(1); ! 249: break; ! 250: } ! 251: return(0); ! 252: } ! 253: ! 254: static int chrtoblktab[] = { ! 255: /* CHR*/ /* BLK*/ /* CHR*/ /* BLK*/ ! 256: /* 0 */ NODEV, /* 1 */ NODEV, ! 257: /* 2 */ NODEV, /* 3 */ NODEV, ! 258: /* 4 */ NODEV, /* 5 */ NODEV, ! 259: /* 6 */ NODEV, /* 7 */ NODEV, ! 260: /* 8 */ NODEV, /* 9 */ NODEV, ! 261: /* 10 */ NODEV, /* 11 */ NODEV, ! 262: /* 12 */ NODEV, /* 13 */ NODEV, ! 263: /* 14 */ 6, /* 15 */ NODEV, ! 264: /* 16 */ NODEV, /* 17 */ NODEV, ! 265: /* 18 */ NODEV, /* 19 */ NODEV, ! 266: /* 20 */ NODEV, /* 21 */ NODEV, ! 267: /* 22 */ NODEV, /* 23 */ NODEV, ! 268: /* 24 */ NODEV, /* 25 */ NODEV, ! 269: /* 26 */ NODEV, /* 27 */ NODEV, ! 270: /* 28 */ NODEV, /* 29 */ NODEV, ! 271: /* 30 */ NODEV, /* 31 */ NODEV, ! 272: /* 32 */ NODEV, /* 33 */ NODEV, ! 273: /* 34 */ NODEV, /* 35 */ NODEV, ! 274: /* 36 */ NODEV, /* 37 */ NODEV, ! 275: /* 38 */ NODEV, /* 39 */ NODEV, ! 276: /* 40 */ NODEV, /* 41 */ 1, ! 277: /* 42 */ NODEV, /* 43 */ NODEV, ! 278: /* 44 */ NODEV, ! 279: }; ! 280: ! 281: /* ! 282: * convert chr dev to blk dev ! 283: */ ! 284: dev_t ! 285: chrtoblk(dev) ! 286: dev_t dev; ! 287: { ! 288: int blkmaj; ! 289: ! 290: if (major(dev) >= nchrdev) ! 291: return(NODEV); ! 292: blkmaj = chrtoblktab[major(dev)]; ! 293: if (blkmaj == NODEV) ! 294: return(NODEV); ! 295: return(makedev(blkmaj, minor(dev))); ! 296: } ! 297: ! 298: /* ! 299: * Returns true if dev is /dev/mem or /dev/kmem. ! 300: */ ! 301: int iskmemdev(dev) ! 302: dev_t dev; ! 303: { ! 304: ! 305: return (major(dev) == 3 && minor(dev) < 2); ! 306: }
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