contrib/libarchive/libarchive/archive_pack_dev.c

   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
  66 static  pack_t  pack_netbsd;
  67 static  pack_t  pack_freebsd;
  68 static  pack_t  pack_8_8;
  69 static  pack_t  pack_12_20;
  70 static  pack_t  pack_14_18;
  71 static  pack_t  pack_8_24;
  72 static  pack_t  pack_bsdos;
  73 static  int     compare_format(const void *, const void *);
  74
  75 static const char iMajorError[] = "invalid major number";
  76 static const char iMinorError[] = "invalid minor number";
  77 static 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 */
 105 dev_t
 106 pack_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
 122 static dev_t
 123 pack_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
 144 static dev_t
 145 pack_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
 166 static dev_t
 167 pack_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
 188 static dev_t
 189 pack_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
 210 static dev_t
 211 pack_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
 232 static dev_t
 233 pack_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
 256 static dev_t
 257 pack_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 */
 283 static 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
 305 static int
 306 compare_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
 318 pack_t *
 319 pack_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 }