archive_pack_dev.c revision 316338
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_UNISTD_H 61#include <unistd.h> 62#endif 63 64#include "archive_pack_dev.h" 65 66static pack_t pack_netbsd; 67static pack_t pack_freebsd; 68static pack_t pack_8_8; 69static pack_t pack_12_20; 70static pack_t pack_14_18; 71static pack_t pack_8_24; 72static pack_t pack_bsdos; 73static int compare_format(const void *, const void *); 74 75static const char iMajorError[] = "invalid major number"; 76static const char iMinorError[] = "invalid minor number"; 77static const char tooManyFields[] = "too many fields for format"; 78 79/* This is blatantly stolen from libarchive/archive_entry.c, 80 * in an attempt to get this to play nice on MinGW... */ 81#if !defined(HAVE_MAJOR) && !defined(major) 82/* Replacement for major/minor/makedev. */ 83#define major(x) ((int)(0x00ff & ((x) >> 8))) 84#define minor(x) ((int)(0xffff00ff & (x))) 85#define makedev(maj,min) ((0xff00 & ((maj)<<8)) | (0xffff00ff & (min))) 86#endif 87 88/* Play games to come up with a suitable makedev() definition. */ 89#ifdef __QNXNTO__ 90/* QNX. <sigh> */ 91#include <sys/netmgr.h> 92#define apd_makedev(maj, min) makedev(ND_LOCAL_NODE, (maj), (min)) 93#elif defined makedev 94/* There's a "makedev" macro. */ 95#define apd_makedev(maj, min) makedev((maj), (min)) 96#elif defined mkdev || ((defined _WIN32 || defined __WIN32__) && !defined(__CYGWIN__)) 97/* Windows. <sigh> */ 98#define apd_makedev(maj, min) mkdev((maj), (min)) 99#else 100/* There's a "makedev" function. */ 101#define apd_makedev(maj, min) makedev((maj), (min)) 102#endif 103 104/* exported */ 105dev_t 106pack_native(int n, unsigned long numbers[], const char **error) 107{ 108 dev_t dev = 0; 109 110 if (n == 2) { 111 dev = apd_makedev(numbers[0], numbers[1]); 112 if ((unsigned long)major(dev) != numbers[0]) 113 *error = iMajorError; 114 else if ((unsigned long)minor(dev) != numbers[1]) 115 *error = iMinorError; 116 } else 117 *error = tooManyFields; 118 return (dev); 119} 120 121 122static dev_t 123pack_netbsd(int n, unsigned long numbers[], const char **error) 124{ 125 dev_t dev = 0; 126 127 if (n == 2) { 128 dev = makedev_netbsd(numbers[0], numbers[1]); 129 if ((unsigned long)major_netbsd(dev) != numbers[0]) 130 *error = iMajorError; 131 else if ((unsigned long)minor_netbsd(dev) != numbers[1]) 132 *error = iMinorError; 133 } else 134 *error = tooManyFields; 135 return (dev); 136} 137 138 139#define major_freebsd(x) ((int32_t)(((x) & 0x0000ff00) >> 8)) 140#define minor_freebsd(x) ((int32_t)(((x) & 0xffff00ff) >> 0)) 141#define makedev_freebsd(x,y) ((dev_t)((((x) << 8) & 0x0000ff00) | \ 142 (((y) << 0) & 0xffff00ff))) 143 144static dev_t 145pack_freebsd(int n, unsigned long numbers[], const char **error) 146{ 147 dev_t dev = 0; 148 149 if (n == 2) { 150 dev = makedev_freebsd(numbers[0], numbers[1]); 151 if ((unsigned long)major_freebsd(dev) != numbers[0]) 152 *error = iMajorError; 153 if ((unsigned long)minor_freebsd(dev) != numbers[1]) 154 *error = iMinorError; 155 } else 156 *error = tooManyFields; 157 return (dev); 158} 159 160 161#define major_8_8(x) ((int32_t)(((x) & 0x0000ff00) >> 8)) 162#define minor_8_8(x) ((int32_t)(((x) & 0x000000ff) >> 0)) 163#define makedev_8_8(x,y) ((dev_t)((((x) << 8) & 0x0000ff00) | \ 164 (((y) << 0) & 0x000000ff))) 165 166static dev_t 167pack_8_8(int n, unsigned long numbers[], const char **error) 168{ 169 dev_t dev = 0; 170 171 if (n == 2) { 172 dev = makedev_8_8(numbers[0], numbers[1]); 173 if ((unsigned long)major_8_8(dev) != numbers[0]) 174 *error = iMajorError; 175 if ((unsigned long)minor_8_8(dev) != numbers[1]) 176 *error = iMinorError; 177 } else 178 *error = tooManyFields; 179 return (dev); 180} 181 182 183#define major_12_20(x) ((int32_t)(((x) & 0xfff00000) >> 20)) 184#define minor_12_20(x) ((int32_t)(((x) & 0x000fffff) >> 0)) 185#define makedev_12_20(x,y) ((dev_t)((((x) << 20) & 0xfff00000) | \ 186 (((y) << 0) & 0x000fffff))) 187 188static dev_t 189pack_12_20(int n, unsigned long numbers[], const char **error) 190{ 191 dev_t dev = 0; 192 193 if (n == 2) { 194 dev = makedev_12_20(numbers[0], numbers[1]); 195 if ((unsigned long)major_12_20(dev) != numbers[0]) 196 *error = iMajorError; 197 if ((unsigned long)minor_12_20(dev) != numbers[1]) 198 *error = iMinorError; 199 } else 200 *error = tooManyFields; 201 return (dev); 202} 203 204 205#define major_14_18(x) ((int32_t)(((x) & 0xfffc0000) >> 18)) 206#define minor_14_18(x) ((int32_t)(((x) & 0x0003ffff) >> 0)) 207#define makedev_14_18(x,y) ((dev_t)((((x) << 18) & 0xfffc0000) | \ 208 (((y) << 0) & 0x0003ffff))) 209 210static dev_t 211pack_14_18(int n, unsigned long numbers[], const char **error) 212{ 213 dev_t dev = 0; 214 215 if (n == 2) { 216 dev = makedev_14_18(numbers[0], numbers[1]); 217 if ((unsigned long)major_14_18(dev) != numbers[0]) 218 *error = iMajorError; 219 if ((unsigned long)minor_14_18(dev) != numbers[1]) 220 *error = iMinorError; 221 } else 222 *error = tooManyFields; 223 return (dev); 224} 225 226 227#define major_8_24(x) ((int32_t)(((x) & 0xff000000) >> 24)) 228#define minor_8_24(x) ((int32_t)(((x) & 0x00ffffff) >> 0)) 229#define makedev_8_24(x,y) ((dev_t)((((x) << 24) & 0xff000000) | \ 230 (((y) << 0) & 0x00ffffff))) 231 232static dev_t 233pack_8_24(int n, unsigned long numbers[], const char **error) 234{ 235 dev_t dev = 0; 236 237 if (n == 2) { 238 dev = makedev_8_24(numbers[0], numbers[1]); 239 if ((unsigned long)major_8_24(dev) != numbers[0]) 240 *error = iMajorError; 241 if ((unsigned long)minor_8_24(dev) != numbers[1]) 242 *error = iMinorError; 243 } else 244 *error = tooManyFields; 245 return (dev); 246} 247 248 249#define major_12_12_8(x) ((int32_t)(((x) & 0xfff00000) >> 20)) 250#define unit_12_12_8(x) ((int32_t)(((x) & 0x000fff00) >> 8)) 251#define subunit_12_12_8(x) ((int32_t)(((x) & 0x000000ff) >> 0)) 252#define makedev_12_12_8(x,y,z) ((dev_t)((((x) << 20) & 0xfff00000) | \ 253 (((y) << 8) & 0x000fff00) | \ 254 (((z) << 0) & 0x000000ff))) 255 256static dev_t 257pack_bsdos(int n, unsigned long numbers[], const char **error) 258{ 259 dev_t dev = 0; 260 261 if (n == 2) { 262 dev = makedev_12_20(numbers[0], numbers[1]); 263 if ((unsigned long)major_12_20(dev) != numbers[0]) 264 *error = iMajorError; 265 if ((unsigned long)minor_12_20(dev) != numbers[1]) 266 *error = iMinorError; 267 } else if (n == 3) { 268 dev = makedev_12_12_8(numbers[0], numbers[1], numbers[2]); 269 if ((unsigned long)major_12_12_8(dev) != numbers[0]) 270 *error = iMajorError; 271 if ((unsigned long)unit_12_12_8(dev) != numbers[1]) 272 *error = "invalid unit number"; 273 if ((unsigned long)subunit_12_12_8(dev) != numbers[2]) 274 *error = "invalid subunit number"; 275 } else 276 *error = tooManyFields; 277 return (dev); 278} 279 280 281 /* list of formats and pack functions */ 282 /* this list must be sorted lexically */ 283static const struct format { 284 const char *name; 285 pack_t *pack; 286} formats[] = { 287 {"386bsd", pack_8_8}, 288 {"4bsd", pack_8_8}, 289 {"bsdos", pack_bsdos}, 290 {"freebsd", pack_freebsd}, 291 {"hpux", pack_8_24}, 292 {"isc", pack_8_8}, 293 {"linux", pack_8_8}, 294 {"native", pack_native}, 295 {"netbsd", pack_netbsd}, 296 {"osf1", pack_12_20}, 297 {"sco", pack_8_8}, 298 {"solaris", pack_14_18}, 299 {"sunos", pack_8_8}, 300 {"svr3", pack_8_8}, 301 {"svr4", pack_14_18}, 302 {"ultrix", pack_8_8}, 303}; 304 305static int 306compare_format(const void *key, const void *element) 307{ 308 const char *name; 309 const struct format *format; 310 311 name = key; 312 format = element; 313 314 return (strcmp(name, format->name)); 315} 316 317 318pack_t * 319pack_find(const char *name) 320{ 321 struct format *format; 322 323 format = bsearch(name, formats, 324 sizeof(formats)/sizeof(formats[0]), 325 sizeof(formats[0]), compare_format); 326 if (format == 0) 327 return (NULL); 328 return (format->pack); 329} 330