1 /* $NetBSD: pack_dev.c,v 1.11 2011/08/27 18:37:41 joerg Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #if HAVE_NBTOOL_CONFIG_H 33 #include "nbtool_config.h" 34 #endif 35 36 #include <sys/cdefs.h> 37 #if !defined(lint) 38 __RCSID("$NetBSD: pack_dev.c,v 1.11 2011/08/27 18:37:41 joerg Exp $"); 39 #endif /* not lint */ 40 41 #include <sys/types.h> 42 #include <sys/stat.h> 43 44 #include <limits.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <unistd.h> 49 50 #include "pack_dev.h" 51 52 static pack_t pack_netbsd; 53 static pack_t pack_freebsd; 54 static pack_t pack_8_8; 55 static pack_t pack_12_20; 56 static pack_t pack_14_18; 57 static pack_t pack_8_24; 58 static pack_t pack_bsdos; 59 static int compare_format(const void *, const void *); 60 61 static const char iMajorError[] = "invalid major number"; 62 static const char iMinorError[] = "invalid minor number"; 63 static const char tooManyFields[] = "too many fields for format"; 64 65 /* exported */ 66 portdev_t 67 pack_native(int n, u_long numbers[], const char **error) 68 { 69 portdev_t dev = 0; 70 71 if (n == 2) { 72 dev = makedev(numbers[0], numbers[1]); 73 if ((u_long)major(dev) != numbers[0]) 74 *error = iMajorError; 75 else if ((u_long)minor(dev) != numbers[1]) 76 *error = iMinorError; 77 } else 78 *error = tooManyFields; 79 return (dev); 80 } 81 82 83 static portdev_t 84 pack_netbsd(int n, u_long numbers[], const char **error) 85 { 86 portdev_t dev = 0; 87 88 if (n == 2) { 89 dev = makedev_netbsd(numbers[0], numbers[1]); 90 if ((u_long)major_netbsd(dev) != numbers[0]) 91 *error = iMajorError; 92 else if ((u_long)minor_netbsd(dev) != numbers[1]) 93 *error = iMinorError; 94 } else 95 *error = tooManyFields; 96 return (dev); 97 } 98 99 100 #define major_freebsd(x) ((int32_t)(((x) & 0x0000ff00) >> 8)) 101 #define minor_freebsd(x) ((int32_t)(((x) & 0xffff00ff) >> 0)) 102 #define makedev_freebsd(x,y) ((portdev_t)((((x) << 8) & 0x0000ff00) | \ 103 (((y) << 0) & 0xffff00ff))) 104 105 static portdev_t 106 pack_freebsd(int n, u_long numbers[], const char **error) 107 { 108 portdev_t dev = 0; 109 110 if (n == 2) { 111 dev = makedev_freebsd(numbers[0], numbers[1]); 112 if ((u_long)major_freebsd(dev) != numbers[0]) 113 *error = iMajorError; 114 if ((u_long)minor_freebsd(dev) != numbers[1]) 115 *error = iMinorError; 116 } else 117 *error = tooManyFields; 118 return (dev); 119 } 120 121 122 #define major_8_8(x) ((int32_t)(((x) & 0x0000ff00) >> 8)) 123 #define minor_8_8(x) ((int32_t)(((x) & 0x000000ff) >> 0)) 124 #define makedev_8_8(x,y) ((portdev_t)((((x) << 8) & 0x0000ff00) | \ 125 (((y) << 0) & 0x000000ff))) 126 127 static portdev_t 128 pack_8_8(int n, u_long numbers[], const char **error) 129 { 130 portdev_t dev = 0; 131 132 if (n == 2) { 133 dev = makedev_8_8(numbers[0], numbers[1]); 134 if ((u_long)major_8_8(dev) != numbers[0]) 135 *error = iMajorError; 136 if ((u_long)minor_8_8(dev) != numbers[1]) 137 *error = iMinorError; 138 } else 139 *error = tooManyFields; 140 return (dev); 141 } 142 143 144 #define major_12_20(x) ((int32_t)(((x) & 0xfff00000) >> 20)) 145 #define minor_12_20(x) ((int32_t)(((x) & 0x000fffff) >> 0)) 146 #define makedev_12_20(x,y) ((portdev_t)((((x) << 20) & 0xfff00000) | \ 147 (((y) << 0) & 0x000fffff))) 148 149 static portdev_t 150 pack_12_20(int n, u_long numbers[], const char **error) 151 { 152 portdev_t dev = 0; 153 154 if (n == 2) { 155 dev = makedev_12_20(numbers[0], numbers[1]); 156 if ((u_long)major_12_20(dev) != numbers[0]) 157 *error = iMajorError; 158 if ((u_long)minor_12_20(dev) != numbers[1]) 159 *error = iMinorError; 160 } else 161 *error = tooManyFields; 162 return (dev); 163 } 164 165 166 #define major_14_18(x) ((int32_t)(((x) & 0xfffc0000) >> 18)) 167 #define minor_14_18(x) ((int32_t)(((x) & 0x0003ffff) >> 0)) 168 #define makedev_14_18(x,y) ((portdev_t)((((x) << 18) & 0xfffc0000) | \ 169 (((y) << 0) & 0x0003ffff))) 170 171 static portdev_t 172 pack_14_18(int n, u_long numbers[], const char **error) 173 { 174 portdev_t dev = 0; 175 176 if (n == 2) { 177 dev = makedev_14_18(numbers[0], numbers[1]); 178 if ((u_long)major_14_18(dev) != numbers[0]) 179 *error = iMajorError; 180 if ((u_long)minor_14_18(dev) != numbers[1]) 181 *error = iMinorError; 182 } else 183 *error = tooManyFields; 184 return (dev); 185 } 186 187 188 #define major_8_24(x) ((int32_t)(((x) & 0xff000000) >> 24)) 189 #define minor_8_24(x) ((int32_t)(((x) & 0x00ffffff) >> 0)) 190 #define makedev_8_24(x,y) ((portdev_t)((((x) << 24) & 0xff000000) | \ 191 (((y) << 0) & 0x00ffffff))) 192 193 static portdev_t 194 pack_8_24(int n, u_long numbers[], const char **error) 195 { 196 portdev_t dev = 0; 197 198 if (n == 2) { 199 dev = makedev_8_24(numbers[0], numbers[1]); 200 if ((u_long)major_8_24(dev) != numbers[0]) 201 *error = iMajorError; 202 if ((u_long)minor_8_24(dev) != numbers[1]) 203 *error = iMinorError; 204 } else 205 *error = tooManyFields; 206 return (dev); 207 } 208 209 210 #define major_12_12_8(x) ((int32_t)(((x) & 0xfff00000) >> 20)) 211 #define unit_12_12_8(x) ((int32_t)(((x) & 0x000fff00) >> 8)) 212 #define subunit_12_12_8(x) ((int32_t)(((x) & 0x000000ff) >> 0)) 213 #define makedev_12_12_8(x,y,z) ((portdev_t)((((x) << 20) & 0xfff00000) | \ 214 (((y) << 8) & 0x000fff00) | \ 215 (((z) << 0) & 0x000000ff))) 216 217 static portdev_t 218 pack_bsdos(int n, u_long numbers[], const char **error) 219 { 220 portdev_t dev = 0; 221 222 if (n == 2) { 223 dev = makedev_12_20(numbers[0], numbers[1]); 224 if ((u_long)major_12_20(dev) != numbers[0]) 225 *error = iMajorError; 226 if ((u_long)minor_12_20(dev) != numbers[1]) 227 *error = iMinorError; 228 } else if (n == 3) { 229 dev = makedev_12_12_8(numbers[0], numbers[1], numbers[2]); 230 if ((u_long)major_12_12_8(dev) != numbers[0]) 231 *error = iMajorError; 232 if ((u_long)unit_12_12_8(dev) != numbers[1]) 233 *error = "invalid unit number"; 234 if ((u_long)subunit_12_12_8(dev) != numbers[2]) 235 *error = "invalid subunit number"; 236 } else 237 *error = tooManyFields; 238 return (dev); 239 } 240 241 242 /* list of formats and pack functions */ 243 /* this list must be sorted lexically */ 244 static struct format { 245 const char *name; 246 pack_t *pack; 247 } formats[] = { 248 {"386bsd", pack_8_8}, 249 {"4bsd", pack_8_8}, 250 {"bsdos", pack_bsdos}, 251 {"freebsd", pack_freebsd}, 252 {"hpux", pack_8_24}, 253 {"isc", pack_8_8}, 254 {"linux", pack_8_8}, 255 {"native", pack_native}, 256 {"netbsd", pack_netbsd}, 257 {"osf1", pack_12_20}, 258 {"sco", pack_8_8}, 259 {"solaris", pack_14_18}, 260 {"sunos", pack_8_8}, 261 {"svr3", pack_8_8}, 262 {"svr4", pack_14_18}, 263 {"ultrix", pack_8_8}, 264 }; 265 266 static int 267 compare_format(const void *key, const void *element) 268 { 269 const char *name; 270 const struct format *format; 271 272 name = key; 273 format = element; 274 275 return (strcmp(name, format->name)); 276 } 277 278 279 pack_t * 280 pack_find(const char *name) 281 { 282 struct format *format; 283 284 format = bsearch(name, formats, 285 sizeof(formats)/sizeof(formats[0]), 286 sizeof(formats[0]), compare_format); 287 if (format == 0) 288 return (NULL); 289 return (format->pack); 290 } 291