| kern_conf.c (46792) | kern_conf.c (47028) |
|---|---|
| 1/*- 2 * Parts Copyright (c) 1995 Terrence R. Lambert 3 * Copyright (c) 1995 Julian R. Elischer 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 16 unchanged lines hidden (view full) --- 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * | 1/*- 2 * Parts Copyright (c) 1995 Terrence R. Lambert 3 * Copyright (c) 1995 Julian R. Elischer 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 16 unchanged lines hidden (view full) --- 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * |
| 33 * $Id: kern_conf.c,v 1.35 1999/05/09 08:18:12 phk Exp $ | 33 * $Id: kern_conf.c,v 1.36 1999/05/09 13:00:46 phk Exp $ |
| 34 */ 35 36#include <sys/param.h> 37#include <sys/systm.h> 38#include <sys/module.h> 39#include <sys/conf.h> 40#include <sys/vnode.h> 41 --- 23 unchanged lines hidden (view full) --- 65 return(NODEV); 66} 67 68int 69cdevsw_add(dev_t *descrip, 70 struct cdevsw *newentry, 71 struct cdevsw **oldentry) 72{ | 34 */ 35 36#include <sys/param.h> 37#include <sys/systm.h> 38#include <sys/module.h> 39#include <sys/conf.h> 40#include <sys/vnode.h> 41 --- 23 unchanged lines hidden (view full) --- 65 return(NODEV); 66} 67 68int 69cdevsw_add(dev_t *descrip, 70 struct cdevsw *newentry, 71 struct cdevsw **oldentry) 72{ |
| 73 int i ; | 73 int i; 74 static int setup; |
| 74 | 75 |
| 76 if (!setup) { 77 for (i = 0; i < NUMCDEV; i++) 78 if (!bmaj2cmaj[i]) 79 bmaj2cmaj[i] = 254; 80 setup++; 81 } 82 |
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| 75 if ( *descrip == NODEV) { /* auto (0 is valid) */ 76 /* 77 * Search the table looking for a slot... 78 */ 79 for (i = cdevsw_ALLOCSTART; i < nchrdev; i++) 80 if (cdevsw[i] == NULL) 81 break; /* found one! */ 82 /* out of allocable slots? */ --- 73 unchanged lines hidden (view full) --- 156 return error; 157 } 158 159 if (data->chainevh) 160 return data->chainevh(mod, what, data->chainarg); 161 else 162 return 0; 163} | 83 if ( *descrip == NODEV) { /* auto (0 is valid) */ 84 /* 85 * Search the table looking for a slot... 86 */ 87 for (i = cdevsw_ALLOCSTART; i < nchrdev; i++) 88 if (cdevsw[i] == NULL) 89 break; /* found one! */ 90 /* out of allocable slots? */ --- 73 unchanged lines hidden (view full) --- 164 return error; 165 } 166 167 if (data->chainevh) 168 return data->chainevh(mod, what, data->chainarg); 169 else 170 return 0; 171} |
| 172 173/* 174 * dev_t and u_dev_t primitives 175 */ 176 177#define DEVT_FASCIST 1 178 179int 180major(dev_t x) 181{ 182#ifdef DEVT_FASCIST 183 return(253 - ((x >> 8) & 0xff)); 184#else 185 return((x >> 8) & 0xff); 186#endif 187} 188 189int 190minor(dev_t x) 191{ 192 return(x & 0xffff00ff); 193} 194 195dev_t 196makedev(int x, int y) 197{ 198#ifdef DEVT_FASCIST 199 return (((253 - x) << 8) | y); 200#else 201 return ((x << 8) | y); 202#endif 203} 204 205udev_t 206dev2udev(dev_t x) 207{ 208 return umakedev(major(x), minor(x)); 209} 210 211dev_t 212udev2dev(udev_t x, int b) 213{ 214 return makedev(umajor(x), uminor(x)); 215} 216 217int 218uminor(udev_t dev) 219{ 220 return(dev & 0xffff00ff); 221} 222 223int 224umajor(udev_t dev) 225{ 226 return((dev & 0xff00) >> 8); 227} 228 229udev_t 230umakedev(int x, int y) 231{ 232 return ((x << 8) | y); 233} 234 |
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