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_UNISTD_H 64 #include <unistd.h> 65 #endif 66 67 #include "archive_pack_dev.h" 68 69 static pack_t pack_netbsd; 70 static pack_t pack_freebsd; 71 static pack_t pack_8_8; 72 static pack_t pack_12_20; 73 static pack_t pack_14_18; 74 static pack_t pack_8_24; 75 static pack_t pack_bsdos; 76 static int compare_format(const void *, const void *); 77 78 static const char iMajorError[] = "invalid major number"; 79 static const char iMinorError[] = "invalid minor number"; 80 static const char tooManyFields[] = "too many fields for format"; 81 82 /* This is blatantly stolen from libarchive/archive_entry.c, 83 * in an attempt to get this to play nice on MinGW... */ 84 #if !defined(HAVE_MAJOR) && !defined(major) 85 /* Replacement for major/minor/makedev. */ 86 #define major(x) ((int)(0x00ff & ((x) >> 8))) 87 #define minor(x) ((int)(0xffff00ff & (x))) 88 #define makedev(maj,min) ((0xff00 & ((maj)<<8)) | (0xffff00ff & (min))) 89 #endif 90 91 /* Play games to come up with a suitable makedev() definition. */ 92 #ifdef __QNXNTO__ 93 /* QNX. <sigh> */ 94 #include <sys/netmgr.h> 95 #define apd_makedev(maj, min) makedev(ND_LOCAL_NODE, (maj), (min)) 96 #elif defined makedev 97 /* There's a "makedev" macro. */ 98 #define apd_makedev(maj, min) makedev((maj), (min)) 99 #elif defined mkdev || ((defined _WIN32 || defined __WIN32__) && !defined(__CYGWIN__)) 100 /* Windows. <sigh> */ 101 #define apd_makedev(maj, min) mkdev((maj), (min)) 102 #else 103 /* There's a "makedev" function. */ 104 #define apd_makedev(maj, min) makedev((maj), (min)) 105 #endif 106 107 /* exported */ 108 dev_t 109 pack_native(int n, unsigned long numbers[], const char **error) 110 { 111 dev_t dev = 0; 112 113 if (n == 2) { 114 dev = apd_makedev(numbers[0], numbers[1]); 115 if ((unsigned long)major(dev) != numbers[0]) 116 *error = iMajorError; 117 else if ((unsigned long)minor(dev) != numbers[1]) 118 *error = iMinorError; 119 } else 120 *error = tooManyFields; 121 return (dev); 122 } 123 124 125 static dev_t 126 pack_netbsd(int n, unsigned long numbers[], const char **error) 127 { 128 dev_t dev = 0; 129 130 if (n == 2) { 131 dev = makedev_netbsd(numbers[0], numbers[1]); 132 if ((unsigned long)major_netbsd(dev) != numbers[0]) 133 *error = iMajorError; 134 else if ((unsigned long)minor_netbsd(dev) != numbers[1]) 135 *error = iMinorError; 136 } else 137 *error = tooManyFields; 138 return (dev); 139 } 140 141 142 #define major_freebsd(x) ((int32_t)(((x) & 0x0000ff00) >> 8)) 143 #define minor_freebsd(x) ((int32_t)(((x) & 0xffff00ff) >> 0)) 144 #define makedev_freebsd(x,y) ((dev_t)((((x) << 8) & 0x0000ff00) | \ 145 (((y) << 0) & 0xffff00ff))) 146 147 static dev_t 148 pack_freebsd(int n, unsigned long numbers[], const char **error) 149 { 150 dev_t dev = 0; 151 152 if (n == 2) { 153 dev = makedev_freebsd(numbers[0], numbers[1]); 154 if ((unsigned long)major_freebsd(dev) != numbers[0]) 155 *error = iMajorError; 156 if ((unsigned long)minor_freebsd(dev) != numbers[1]) 157 *error = iMinorError; 158 } else 159 *error = tooManyFields; 160 return (dev); 161 } 162 163 164 #define major_8_8(x) ((int32_t)(((x) & 0x0000ff00) >> 8)) 165 #define minor_8_8(x) ((int32_t)(((x) & 0x000000ff) >> 0)) 166 #define makedev_8_8(x,y) ((dev_t)((((x) << 8) & 0x0000ff00) | \ 167 (((y) << 0) & 0x000000ff))) 168 169 static dev_t 170 pack_8_8(int n, unsigned long numbers[], const char **error) 171 { 172 dev_t dev = 0; 173 174 if (n == 2) { 175 dev = makedev_8_8(numbers[0], numbers[1]); 176 if ((unsigned long)major_8_8(dev) != numbers[0]) 177 *error = iMajorError; 178 if ((unsigned long)minor_8_8(dev) != numbers[1]) 179 *error = iMinorError; 180 } else 181 *error = tooManyFields; 182 return (dev); 183 } 184 185 186 #define major_12_20(x) ((int32_t)(((x) & 0xfff00000) >> 20)) 187 #define minor_12_20(x) ((int32_t)(((x) & 0x000fffff) >> 0)) 188 #define makedev_12_20(x,y) ((dev_t)((((x) << 20) & 0xfff00000) | \ 189 (((y) << 0) & 0x000fffff))) 190 191 static dev_t 192 pack_12_20(int n, unsigned long numbers[], const char **error) 193 { 194 dev_t dev = 0; 195 196 if (n == 2) { 197 dev = makedev_12_20(numbers[0], numbers[1]); 198 if ((unsigned long)major_12_20(dev) != numbers[0]) 199 *error = iMajorError; 200 if ((unsigned long)minor_12_20(dev) != numbers[1]) 201 *error = iMinorError; 202 } else 203 *error = tooManyFields; 204 return (dev); 205 } 206 207 208 #define major_14_18(x) ((int32_t)(((x) & 0xfffc0000) >> 18)) 209 #define minor_14_18(x) ((int32_t)(((x) & 0x0003ffff) >> 0)) 210 #define makedev_14_18(x,y) ((dev_t)((((x) << 18) & 0xfffc0000) | \ 211 (((y) << 0) & 0x0003ffff))) 212 213 static dev_t 214 pack_14_18(int n, unsigned long numbers[], const char **error) 215 { 216 dev_t dev = 0; 217 218 if (n == 2) { 219 dev = makedev_14_18(numbers[0], numbers[1]); 220 if ((unsigned long)major_14_18(dev) != numbers[0]) 221 *error = iMajorError; 222 if ((unsigned long)minor_14_18(dev) != numbers[1]) 223 *error = iMinorError; 224 } else 225 *error = tooManyFields; 226 return (dev); 227 } 228 229 230 #define major_8_24(x) ((int32_t)(((x) & 0xff000000) >> 24)) 231 #define minor_8_24(x) ((int32_t)(((x) & 0x00ffffff) >> 0)) 232 #define makedev_8_24(x,y) ((dev_t)((((x) << 24) & 0xff000000) | \ 233 (((y) << 0) & 0x00ffffff))) 234 235 static dev_t 236 pack_8_24(int n, unsigned long numbers[], const char **error) 237 { 238 dev_t dev = 0; 239 240 if (n == 2) { 241 dev = makedev_8_24(numbers[0], numbers[1]); 242 if ((unsigned long)major_8_24(dev) != numbers[0]) 243 *error = iMajorError; 244 if ((unsigned long)minor_8_24(dev) != numbers[1]) 245 *error = iMinorError; 246 } else 247 *error = tooManyFields; 248 return (dev); 249 } 250 251 252 #define major_12_12_8(x) ((int32_t)(((x) & 0xfff00000) >> 20)) 253 #define unit_12_12_8(x) ((int32_t)(((x) & 0x000fff00) >> 8)) 254 #define subunit_12_12_8(x) ((int32_t)(((x) & 0x000000ff) >> 0)) 255 #define makedev_12_12_8(x,y,z) ((dev_t)((((x) << 20) & 0xfff00000) | \ 256 (((y) << 8) & 0x000fff00) | \ 257 (((z) << 0) & 0x000000ff))) 258 259 static dev_t 260 pack_bsdos(int n, unsigned long numbers[], const char **error) 261 { 262 dev_t dev = 0; 263 264 if (n == 2) { 265 dev = makedev_12_20(numbers[0], numbers[1]); 266 if ((unsigned long)major_12_20(dev) != numbers[0]) 267 *error = iMajorError; 268 if ((unsigned long)minor_12_20(dev) != numbers[1]) 269 *error = iMinorError; 270 } else if (n == 3) { 271 dev = makedev_12_12_8(numbers[0], numbers[1], numbers[2]); 272 if ((unsigned long)major_12_12_8(dev) != numbers[0]) 273 *error = iMajorError; 274 if ((unsigned long)unit_12_12_8(dev) != numbers[1]) 275 *error = "invalid unit number"; 276 if ((unsigned long)subunit_12_12_8(dev) != numbers[2]) 277 *error = "invalid subunit number"; 278 } else 279 *error = tooManyFields; 280 return (dev); 281 } 282 283 284 /* list of formats and pack functions */ 285 /* this list must be sorted lexically */ 286 static const struct format { 287 const char *name; 288 pack_t *pack; 289 } formats[] = { 290 {"386bsd", pack_8_8}, 291 {"4bsd", pack_8_8}, 292 {"bsdos", pack_bsdos}, 293 {"freebsd", pack_freebsd}, 294 {"hpux", pack_8_24}, 295 {"isc", pack_8_8}, 296 {"linux", pack_8_8}, 297 {"native", pack_native}, 298 {"netbsd", pack_netbsd}, 299 {"osf1", pack_12_20}, 300 {"sco", pack_8_8}, 301 {"solaris", pack_14_18}, 302 {"sunos", pack_8_8}, 303 {"svr3", pack_8_8}, 304 {"svr4", pack_14_18}, 305 {"ultrix", pack_8_8}, 306 }; 307 308 static int 309 compare_format(const void *key, const void *element) 310 { 311 const char *name; 312 const struct format *format; 313 314 name = key; 315 format = element; 316 317 return (strcmp(name, format->name)); 318 } 319 320 321 pack_t * 322 pack_find(const char *name) 323 { 324 struct format *format; 325 326 format = bsearch(name, formats, 327 sizeof(formats)/sizeof(formats[0]), 328 sizeof(formats[0]), compare_format); 329 if (format == 0) 330 return (NULL); 331 return (format->pack); 332 } 333