1 /* $NetBSD: pack_dev.c,v 1.12 2013/06/14 16:28:20 tsutsui 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 /* Originally from NetBSD's mknod(8) source. */ 33 34 #include "archive_platform.h" 35 36 #if HAVE_SYS_CDEFS_H 37 #include <sys/cdefs.h> 38 #endif 39 #if !defined(lint) 40 __RCSID("$NetBSD$"); 41 #endif /* not lint */ 42 43 #ifdef HAVE_LIMITS_H 44 #include <limits.h> 45 #endif 46 47 #include <stdio.h> 48 #ifdef HAVE_STDLIB_H 49 #include <stdlib.h> 50 #endif 51 #ifdef HAVE_STRING_H 52 #include <string.h> 53 #endif 54 #ifdef HAVE_SYS_TYPES_H 55 #include <sys/types.h> 56 #endif 57 #ifdef HAVE_SYS_STAT_H 58 #include <sys/stat.h> 59 #endif 60 #ifdef HAVE_SYS_SYSMACROS_H 61 #include <sys/sysmacros.h> 62 #endif 63 #ifdef HAVE_SYS_MKDEV_H 64 #include <sys/mkdev.h> 65 #endif 66 #ifdef HAVE_UNISTD_H 67 #include <unistd.h> 68 #endif 69 70 #include "archive_pack_dev.h" 71 72 static pack_t pack_netbsd; 73 static pack_t pack_freebsd; 74 static pack_t pack_8_8; 75 static pack_t pack_12_20; 76 static pack_t pack_14_18; 77 static pack_t pack_8_24; 78 static pack_t pack_bsdos; 79 static int compare_format(const void *, const void *); 80 81 static const char iMajorError[] = "invalid major number"; 82 static const char iMinorError[] = "invalid minor number"; 83 static const char tooManyFields[] = "too many fields for format"; 84 85 /* This is blatantly stolen from libarchive/archive_entry.c, 86 * in an attempt to get this to play nice on MinGW... */ 87 #if !defined(HAVE_MAJOR) && !defined(major) 88 /* Replacement for major/minor/makedev. */ 89 #define major(x) ((int)(0x00ff & ((x) >> 8))) 90 #define minor(x) ((int)(0xffff00ff & (x))) 91 #define makedev(maj,min) ((0xff00 & ((maj)<<8)) | (0xffff00ff & (min))) 92 #endif 93 94 /* Play games to come up with a suitable makedev() definition. */ 95 #ifdef __QNXNTO__ 96 /* QNX. <sigh> */ 97 #include <sys/netmgr.h> 98 #define apd_makedev(maj, min) makedev(ND_LOCAL_NODE, (maj), (min)) 99 #elif defined makedev 100 /* There's a "makedev" macro. */ 101 #define apd_makedev(maj, min) makedev((maj), (min)) 102 #elif defined mkdev || ((defined _WIN32 || defined __WIN32__) && !defined(__CYGWIN__)) 103 /* Windows. <sigh> */ 104 #define apd_makedev(maj, min) mkdev((maj), (min)) 105 #else 106 /* There's a "makedev" function. */ 107 #define apd_makedev(maj, min) makedev((maj), (min)) 108 #endif 109 110 /* exported */ 111 dev_t 112 pack_native(int n, unsigned long numbers[], const char **error) 113 { 114 dev_t dev = 0; 115 116 if (n == 2) { 117 dev = apd_makedev(numbers[0], numbers[1]); 118 if ((unsigned long)major(dev) != numbers[0]) 119 *error = iMajorError; 120 else if ((unsigned long)minor(dev) != numbers[1]) 121 *error = iMinorError; 122 } else 123 *error = tooManyFields; 124 return (dev); 125 } 126 127 128 static dev_t 129 pack_netbsd(int n, unsigned long numbers[], const char **error) 130 { 131 dev_t dev = 0; 132 133 if (n == 2) { 134 dev = makedev_netbsd(numbers[0], numbers[1]); 135 if ((unsigned long)major_netbsd(dev) != numbers[0]) 136 *error = iMajorError; 137 else if ((unsigned long)minor_netbsd(dev) != numbers[1]) 138 *error = iMinorError; 139 } else 140 *error = tooManyFields; 141 return (dev); 142 } 143 144 145 #define major_freebsd(x) ((int32_t)(((x) & 0x0000ff00) >> 8)) 146 #define minor_freebsd(x) ((int32_t)(((x) & 0xffff00ff) >> 0)) 147 #define makedev_freebsd(x,y) ((dev_t)((((x) << 8) & 0x0000ff00) | \ 148 (((y) << 0) & 0xffff00ff))) 149 150 static dev_t 151 pack_freebsd(int n, unsigned long numbers[], const char **error) 152 { 153 dev_t dev = 0; 154 155 if (n == 2) { 156 dev = makedev_freebsd(numbers[0], numbers[1]); 157 if ((unsigned long)major_freebsd(dev) != numbers[0]) 158 *error = iMajorError; 159 if ((unsigned long)minor_freebsd(dev) != numbers[1]) 160 *error = iMinorError; 161 } else 162 *error = tooManyFields; 163 return (dev); 164 } 165 166 167 #define major_8_8(x) ((int32_t)(((x) & 0x0000ff00) >> 8)) 168 #define minor_8_8(x) ((int32_t)(((x) & 0x000000ff) >> 0)) 169 #define makedev_8_8(x,y) ((dev_t)((((x) << 8) & 0x0000ff00) | \ 170 (((y) << 0) & 0x000000ff))) 171 172 static dev_t 173 pack_8_8(int n, unsigned long numbers[], const char **error) 174 { 175 dev_t dev = 0; 176 177 if (n == 2) { 178 dev = makedev_8_8(numbers[0], numbers[1]); 179 if ((unsigned long)major_8_8(dev) != numbers[0]) 180 *error = iMajorError; 181 if ((unsigned long)minor_8_8(dev) != numbers[1]) 182 *error = iMinorError; 183 } else 184 *error = tooManyFields; 185 return (dev); 186 } 187 188 189 #define major_12_20(x) ((int32_t)(((x) & 0xfff00000) >> 20)) 190 #define minor_12_20(x) ((int32_t)(((x) & 0x000fffff) >> 0)) 191 #define makedev_12_20(x,y) ((dev_t)((((x) << 20) & 0xfff00000) | \ 192 (((y) << 0) & 0x000fffff))) 193 194 static dev_t 195 pack_12_20(int n, unsigned long numbers[], const char **error) 196 { 197 dev_t dev = 0; 198 199 if (n == 2) { 200 dev = makedev_12_20(numbers[0], numbers[1]); 201 if ((unsigned long)major_12_20(dev) != numbers[0]) 202 *error = iMajorError; 203 if ((unsigned long)minor_12_20(dev) != numbers[1]) 204 *error = iMinorError; 205 } else 206 *error = tooManyFields; 207 return (dev); 208 } 209 210 211 #define major_14_18(x) ((int32_t)(((x) & 0xfffc0000) >> 18)) 212 #define minor_14_18(x) ((int32_t)(((x) & 0x0003ffff) >> 0)) 213 #define makedev_14_18(x,y) ((dev_t)((((x) << 18) & 0xfffc0000) | \ 214 (((y) << 0) & 0x0003ffff))) 215 216 static dev_t 217 pack_14_18(int n, unsigned long numbers[], const char **error) 218 { 219 dev_t dev = 0; 220 221 if (n == 2) { 222 dev = makedev_14_18(numbers[0], numbers[1]); 223 if ((unsigned long)major_14_18(dev) != numbers[0]) 224 *error = iMajorError; 225 if ((unsigned long)minor_14_18(dev) != numbers[1]) 226 *error = iMinorError; 227 } else 228 *error = tooManyFields; 229 return (dev); 230 } 231 232 233 #define major_8_24(x) ((int32_t)(((x) & 0xff000000) >> 24)) 234 #define minor_8_24(x) ((int32_t)(((x) & 0x00ffffff) >> 0)) 235 #define makedev_8_24(x,y) ((dev_t)((((x) << 24) & 0xff000000) | \ 236 (((y) << 0) & 0x00ffffff))) 237 238 static dev_t 239 pack_8_24(int n, unsigned long numbers[], const char **error) 240 { 241 dev_t dev = 0; 242 243 if (n == 2) { 244 dev = makedev_8_24(numbers[0], numbers[1]); 245 if ((unsigned long)major_8_24(dev) != numbers[0]) 246 *error = iMajorError; 247 if ((unsigned long)minor_8_24(dev) != numbers[1]) 248 *error = iMinorError; 249 } else 250 *error = tooManyFields; 251 return (dev); 252 } 253 254 255 #define major_12_12_8(x) ((int32_t)(((x) & 0xfff00000) >> 20)) 256 #define unit_12_12_8(x) ((int32_t)(((x) & 0x000fff00) >> 8)) 257 #define subunit_12_12_8(x) ((int32_t)(((x) & 0x000000ff) >> 0)) 258 #define makedev_12_12_8(x,y,z) ((dev_t)((((x) << 20) & 0xfff00000) | \ 259 (((y) << 8) & 0x000fff00) | \ 260 (((z) << 0) & 0x000000ff))) 261 262 static dev_t 263 pack_bsdos(int n, unsigned long numbers[], const char **error) 264 { 265 dev_t dev = 0; 266 267 if (n == 2) { 268 dev = makedev_12_20(numbers[0], numbers[1]); 269 if ((unsigned long)major_12_20(dev) != numbers[0]) 270 *error = iMajorError; 271 if ((unsigned long)minor_12_20(dev) != numbers[1]) 272 *error = iMinorError; 273 } else if (n == 3) { 274 dev = makedev_12_12_8(numbers[0], numbers[1], numbers[2]); 275 if ((unsigned long)major_12_12_8(dev) != numbers[0]) 276 *error = iMajorError; 277 if ((unsigned long)unit_12_12_8(dev) != numbers[1]) 278 *error = "invalid unit number"; 279 if ((unsigned long)subunit_12_12_8(dev) != numbers[2]) 280 *error = "invalid subunit number"; 281 } else 282 *error = tooManyFields; 283 return (dev); 284 } 285 286 287 /* list of formats and pack functions */ 288 /* this list must be sorted lexically */ 289 static const struct format { 290 const char *name; 291 pack_t *pack; 292 } formats[] = { 293 {"386bsd", pack_8_8}, 294 {"4bsd", pack_8_8}, 295 {"bsdos", pack_bsdos}, 296 {"freebsd", pack_freebsd}, 297 {"hpux", pack_8_24}, 298 {"isc", pack_8_8}, 299 {"linux", pack_8_8}, 300 {"native", pack_native}, 301 {"netbsd", pack_netbsd}, 302 {"osf1", pack_12_20}, 303 {"sco", pack_8_8}, 304 {"solaris", pack_14_18}, 305 {"sunos", pack_8_8}, 306 {"svr3", pack_8_8}, 307 {"svr4", pack_14_18}, 308 {"ultrix", pack_8_8}, 309 }; 310 311 static int 312 compare_format(const void *key, const void *element) 313 { 314 const char *name; 315 const struct format *format; 316 317 name = key; 318 format = element; 319 320 return (strcmp(name, format->name)); 321 } 322 323 324 pack_t * 325 pack_find(const char *name) 326 { 327 struct format *format; 328 329 format = bsearch(name, formats, 330 sizeof(formats)/sizeof(formats[0]), 331 sizeof(formats[0]), compare_format); 332 if (format == 0) 333 return (NULL); 334 return (format->pack); 335 } 336