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 #if MAJOR_IN_MKDEV 61 #include <sys/mkdev.h> 62 #define HAVE_MAJOR 63 #elif MAJOR_IN_SYSMACROS 64 #include <sys/sysmacros.h> 65 #define HAVE_MAJOR 66 #endif 67 #ifdef HAVE_UNISTD_H 68 #include <unistd.h> 69 #endif 70 71 #include "archive_pack_dev.h" 72 73 static pack_t pack_netbsd; 74 static pack_t pack_freebsd; 75 static pack_t pack_8_8; 76 static pack_t pack_12_20; 77 static pack_t pack_14_18; 78 static pack_t pack_8_24; 79 static pack_t pack_bsdos; 80 static int __LA_LIBC_CC compare_format(const void *, const void *); 81 82 static const char iMajorError[] = "invalid major number"; 83 static const char iMinorError[] = "invalid minor number"; 84 static const char tooManyFields[] = "too many fields for format"; 85 86 /* This is blatantly stolen from libarchive/archive_entry.c, 87 * in an attempt to get this to play nice on MinGW... */ 88 #if !defined(HAVE_MAJOR) && !defined(major) 89 /* Replacement for major/minor/makedev. */ 90 #define major(x) ((int)(0x00ff & ((x) >> 8))) 91 #define minor(x) ((int)(0xffff00ff & (x))) 92 #define makedev(maj,min) ((0xff00 & ((maj)<<8)) | (0xffff00ff & (min))) 93 #endif 94 95 /* Play games to come up with a suitable makedev() definition. */ 96 #ifdef __QNXNTO__ 97 /* QNX. <sigh> */ 98 #include <sys/netmgr.h> 99 #define apd_makedev(maj, min) makedev(ND_LOCAL_NODE, (maj), (min)) 100 #elif defined makedev 101 /* There's a "makedev" macro. */ 102 #define apd_makedev(maj, min) makedev((maj), (min)) 103 #elif defined mkdev || ((defined _WIN32 || defined __WIN32__) && !defined(__CYGWIN__)) 104 /* Windows. <sigh> */ 105 #define apd_makedev(maj, min) mkdev((maj), (min)) 106 #else 107 /* There's a "makedev" function. */ 108 #define apd_makedev(maj, min) makedev((maj), (min)) 109 #endif 110 111 /* exported */ 112 dev_t 113 pack_native(int n, unsigned long numbers[], const char **error) 114 { 115 dev_t dev = 0; 116 117 if (n == 2) { 118 dev = apd_makedev(numbers[0], numbers[1]); 119 if ((unsigned long)major(dev) != numbers[0]) 120 *error = iMajorError; 121 else if ((unsigned long)minor(dev) != numbers[1]) 122 *error = iMinorError; 123 } else 124 *error = tooManyFields; 125 return (dev); 126 } 127 128 129 static dev_t 130 pack_netbsd(int n, unsigned long numbers[], const char **error) 131 { 132 dev_t dev = 0; 133 134 if (n == 2) { 135 dev = makedev_netbsd(numbers[0], numbers[1]); 136 if ((unsigned long)major_netbsd(dev) != numbers[0]) 137 *error = iMajorError; 138 else if ((unsigned long)minor_netbsd(dev) != numbers[1]) 139 *error = iMinorError; 140 } else 141 *error = tooManyFields; 142 return (dev); 143 } 144 145 146 #define major_freebsd(x) ((int32_t)(((x) & 0x0000ff00) >> 8)) 147 #define minor_freebsd(x) ((int32_t)(((x) & 0xffff00ff) >> 0)) 148 #define makedev_freebsd(x,y) ((dev_t)((((x) << 8) & 0x0000ff00) | \ 149 (((y) << 0) & 0xffff00ff))) 150 151 static dev_t 152 pack_freebsd(int n, unsigned long numbers[], const char **error) 153 { 154 dev_t dev = 0; 155 156 if (n == 2) { 157 dev = makedev_freebsd(numbers[0], numbers[1]); 158 if ((unsigned long)major_freebsd(dev) != numbers[0]) 159 *error = iMajorError; 160 if ((unsigned long)minor_freebsd(dev) != numbers[1]) 161 *error = iMinorError; 162 } else 163 *error = tooManyFields; 164 return (dev); 165 } 166 167 168 #define major_8_8(x) ((int32_t)(((x) & 0x0000ff00) >> 8)) 169 #define minor_8_8(x) ((int32_t)(((x) & 0x000000ff) >> 0)) 170 #define makedev_8_8(x,y) ((dev_t)((((x) << 8) & 0x0000ff00) | \ 171 (((y) << 0) & 0x000000ff))) 172 173 static dev_t 174 pack_8_8(int n, unsigned long numbers[], const char **error) 175 { 176 dev_t dev = 0; 177 178 if (n == 2) { 179 dev = makedev_8_8(numbers[0], numbers[1]); 180 if ((unsigned long)major_8_8(dev) != numbers[0]) 181 *error = iMajorError; 182 if ((unsigned long)minor_8_8(dev) != numbers[1]) 183 *error = iMinorError; 184 } else 185 *error = tooManyFields; 186 return (dev); 187 } 188 189 190 #define major_12_20(x) ((int32_t)(((x) & 0xfff00000) >> 20)) 191 #define minor_12_20(x) ((int32_t)(((x) & 0x000fffff) >> 0)) 192 #define makedev_12_20(x,y) ((dev_t)((((x) << 20) & 0xfff00000) | \ 193 (((y) << 0) & 0x000fffff))) 194 195 static dev_t 196 pack_12_20(int n, unsigned long numbers[], const char **error) 197 { 198 dev_t dev = 0; 199 200 if (n == 2) { 201 dev = makedev_12_20(numbers[0], numbers[1]); 202 if ((unsigned long)major_12_20(dev) != numbers[0]) 203 *error = iMajorError; 204 if ((unsigned long)minor_12_20(dev) != numbers[1]) 205 *error = iMinorError; 206 } else 207 *error = tooManyFields; 208 return (dev); 209 } 210 211 212 #define major_14_18(x) ((int32_t)(((x) & 0xfffc0000) >> 18)) 213 #define minor_14_18(x) ((int32_t)(((x) & 0x0003ffff) >> 0)) 214 #define makedev_14_18(x,y) ((dev_t)((((x) << 18) & 0xfffc0000) | \ 215 (((y) << 0) & 0x0003ffff))) 216 217 static dev_t 218 pack_14_18(int n, unsigned long numbers[], const char **error) 219 { 220 dev_t dev = 0; 221 222 if (n == 2) { 223 dev = makedev_14_18(numbers[0], numbers[1]); 224 if ((unsigned long)major_14_18(dev) != numbers[0]) 225 *error = iMajorError; 226 if ((unsigned long)minor_14_18(dev) != numbers[1]) 227 *error = iMinorError; 228 } else 229 *error = tooManyFields; 230 return (dev); 231 } 232 233 234 #define major_8_24(x) ((int32_t)(((x) & 0xff000000) >> 24)) 235 #define minor_8_24(x) ((int32_t)(((x) & 0x00ffffff) >> 0)) 236 #define makedev_8_24(x,y) ((dev_t)((((x) << 24) & 0xff000000) | \ 237 (((y) << 0) & 0x00ffffff))) 238 239 static dev_t 240 pack_8_24(int n, unsigned long numbers[], const char **error) 241 { 242 dev_t dev = 0; 243 244 if (n == 2) { 245 dev = makedev_8_24(numbers[0], numbers[1]); 246 if ((unsigned long)major_8_24(dev) != numbers[0]) 247 *error = iMajorError; 248 if ((unsigned long)minor_8_24(dev) != numbers[1]) 249 *error = iMinorError; 250 } else 251 *error = tooManyFields; 252 return (dev); 253 } 254 255 256 #define major_12_12_8(x) ((int32_t)(((x) & 0xfff00000) >> 20)) 257 #define unit_12_12_8(x) ((int32_t)(((x) & 0x000fff00) >> 8)) 258 #define subunit_12_12_8(x) ((int32_t)(((x) & 0x000000ff) >> 0)) 259 #define makedev_12_12_8(x,y,z) ((dev_t)((((x) << 20) & 0xfff00000) | \ 260 (((y) << 8) & 0x000fff00) | \ 261 (((z) << 0) & 0x000000ff))) 262 263 static dev_t 264 pack_bsdos(int n, unsigned long numbers[], const char **error) 265 { 266 dev_t dev = 0; 267 268 if (n == 2) { 269 dev = makedev_12_20(numbers[0], numbers[1]); 270 if ((unsigned long)major_12_20(dev) != numbers[0]) 271 *error = iMajorError; 272 if ((unsigned long)minor_12_20(dev) != numbers[1]) 273 *error = iMinorError; 274 } else if (n == 3) { 275 dev = makedev_12_12_8(numbers[0], numbers[1], numbers[2]); 276 if ((unsigned long)major_12_12_8(dev) != numbers[0]) 277 *error = iMajorError; 278 if ((unsigned long)unit_12_12_8(dev) != numbers[1]) 279 *error = "invalid unit number"; 280 if ((unsigned long)subunit_12_12_8(dev) != numbers[2]) 281 *error = "invalid subunit number"; 282 } else 283 *error = tooManyFields; 284 return (dev); 285 } 286 287 288 /* list of formats and pack functions */ 289 /* this list must be sorted lexically */ 290 static const struct format { 291 const char *name; 292 pack_t *pack; 293 } formats[] = { 294 {"386bsd", pack_8_8}, 295 {"4bsd", pack_8_8}, 296 {"bsdos", pack_bsdos}, 297 {"freebsd", pack_freebsd}, 298 {"hpux", pack_8_24}, 299 {"isc", pack_8_8}, 300 {"linux", pack_8_8}, 301 {"native", pack_native}, 302 {"netbsd", pack_netbsd}, 303 {"osf1", pack_12_20}, 304 {"sco", pack_8_8}, 305 {"solaris", pack_14_18}, 306 {"sunos", pack_8_8}, 307 {"svr3", pack_8_8}, 308 {"svr4", pack_14_18}, 309 {"ultrix", pack_8_8}, 310 }; 311 312 static int 313 __LA_LIBC_CC 314 compare_format(const void *key, const void *element) 315 { 316 const char *name; 317 const struct format *format; 318 319 name = key; 320 format = element; 321 322 return (strcmp(name, format->name)); 323 } 324 325 326 pack_t * 327 pack_find(const char *name) 328 { 329 struct format *format; 330 331 format = bsearch(name, formats, 332 sizeof(formats)/sizeof(formats[0]), 333 sizeof(formats[0]), compare_format); 334 if (format == 0) 335 return (NULL); 336 return (format->pack); 337 } 338