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 73static pack_t pack_netbsd; 74static pack_t pack_freebsd; 75static pack_t pack_8_8; 76static pack_t pack_12_20; 77static pack_t pack_14_18; 78static pack_t pack_8_24; 79static pack_t pack_bsdos; 80static int compare_format(const void *, const void *); 81 82static const char iMajorError[] = "invalid major number"; 83static const char iMinorError[] = "invalid minor number"; 84static 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 */ 112dev_t 113pack_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 129static dev_t 130pack_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 151static dev_t 152pack_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 173static dev_t 174pack_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 195static dev_t 196pack_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 217static dev_t 218pack_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 239static dev_t 240pack_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 263static dev_t 264pack_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 */ 290static 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 312static int 313compare_format(const void *key, const void *element) 314{ 315 const char *name; 316 const struct format *format; 317 318 name = key; 319 format = element; 320 321 return (strcmp(name, format->name)); 322} 323 324 325pack_t * 326pack_find(const char *name) 327{ 328 struct format *format; 329 330 format = bsearch(name, formats, 331 sizeof(formats)/sizeof(formats[0]), 332 sizeof(formats[0]), compare_format); 333 if (format == 0) 334 return (NULL); 335 return (format->pack); 336} 337