1 /* $NetBSD: pack_dev.c,v 1.8 2004/05/11 17:09:58 christos 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #if HAVE_NBTOOL_CONFIG_H 40 #include "nbtool_config.h" 41 #endif 42 43 #include <sys/cdefs.h> 44 #if !defined(lint) 45 __RCSID("$NetBSD: pack_dev.c,v 1.8 2004/05/11 17:09:58 christos Exp $"); 46 #endif /* not lint */ 47 48 #include <sys/types.h> 49 #include <sys/stat.h> 50 51 #include <limits.h> 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <string.h> 55 #include <unistd.h> 56 57 #include "pack_dev.h" 58 59 static pack_t pack_netbsd; 60 static pack_t pack_freebsd; 61 static pack_t pack_8_8; 62 static pack_t pack_12_20; 63 static pack_t pack_14_18; 64 static pack_t pack_8_24; 65 static pack_t pack_bsdos; 66 static int compare_format(const void *, const void *); 67 68 static const char iMajorError[] = "invalid major number"; 69 static const char iMinorError[] = "invalid minor number"; 70 static const char tooManyFields[] = "too many fields for format"; 71 72 /* exported */ 73 portdev_t 74 pack_native(int n, u_long numbers[], const char **error) 75 { 76 portdev_t dev = 0; 77 78 if (n == 2) { 79 dev = makedev(numbers[0], numbers[1]); 80 if (major(dev) != numbers[0]) 81 *error = iMajorError; 82 else if (minor(dev) != numbers[1]) 83 *error = iMinorError; 84 } else 85 *error = tooManyFields; 86 return (dev); 87 } 88 89 90 static portdev_t 91 pack_netbsd(int n, u_long numbers[], const char **error) 92 { 93 portdev_t dev = 0; 94 95 if (n == 2) { 96 dev = makedev_netbsd(numbers[0], numbers[1]); 97 if (major_netbsd(dev) != numbers[0]) 98 *error = iMajorError; 99 else if (minor_netbsd(dev) != numbers[1]) 100 *error = iMinorError; 101 } else 102 *error = tooManyFields; 103 return (dev); 104 } 105 106 107 #define major_freebsd(x) ((int32_t)(((x) & 0x0000ff00) >> 8)) 108 #define minor_freebsd(x) ((int32_t)(((x) & 0xffff00ff) >> 0)) 109 #define makedev_freebsd(x,y) ((portdev_t)((((x) << 8) & 0x0000ff00) | \ 110 (((y) << 0) & 0xffff00ff))) 111 112 static portdev_t 113 pack_freebsd(int n, u_long numbers[], const char **error) 114 { 115 portdev_t dev = 0; 116 117 if (n == 2) { 118 dev = makedev_freebsd(numbers[0], numbers[1]); 119 if (major_freebsd(dev) != numbers[0]) 120 *error = iMajorError; 121 if (minor_freebsd(dev) != numbers[1]) 122 *error = iMinorError; 123 } else 124 *error = tooManyFields; 125 return (dev); 126 } 127 128 129 #define major_8_8(x) ((int32_t)(((x) & 0x0000ff00) >> 8)) 130 #define minor_8_8(x) ((int32_t)(((x) & 0x000000ff) >> 0)) 131 #define makedev_8_8(x,y) ((portdev_t)((((x) << 8) & 0x0000ff00) | \ 132 (((y) << 0) & 0x000000ff))) 133 134 static portdev_t 135 pack_8_8(int n, u_long numbers[], const char **error) 136 { 137 portdev_t dev = 0; 138 139 if (n == 2) { 140 dev = makedev_8_8(numbers[0], numbers[1]); 141 if (major_8_8(dev) != numbers[0]) 142 *error = iMajorError; 143 if (minor_8_8(dev) != numbers[1]) 144 *error = iMinorError; 145 } else 146 *error = tooManyFields; 147 return (dev); 148 } 149 150 151 #define major_12_20(x) ((int32_t)(((x) & 0xfff00000) >> 20)) 152 #define minor_12_20(x) ((int32_t)(((x) & 0x000fffff) >> 0)) 153 #define makedev_12_20(x,y) ((portdev_t)((((x) << 20) & 0xfff00000) | \ 154 (((y) << 0) & 0x000fffff))) 155 156 static portdev_t 157 pack_12_20(int n, u_long numbers[], const char **error) 158 { 159 portdev_t dev = 0; 160 161 if (n == 2) { 162 dev = makedev_12_20(numbers[0], numbers[1]); 163 if (major_12_20(dev) != numbers[0]) 164 *error = iMajorError; 165 if (minor_12_20(dev) != numbers[1]) 166 *error = iMinorError; 167 } else 168 *error = tooManyFields; 169 return (dev); 170 } 171 172 173 #define major_14_18(x) ((int32_t)(((x) & 0xfffc0000) >> 18)) 174 #define minor_14_18(x) ((int32_t)(((x) & 0x0003ffff) >> 0)) 175 #define makedev_14_18(x,y) ((portdev_t)((((x) << 18) & 0xfffc0000) | \ 176 (((y) << 0) & 0x0003ffff))) 177 178 static portdev_t 179 pack_14_18(int n, u_long numbers[], const char **error) 180 { 181 portdev_t dev = 0; 182 183 if (n == 2) { 184 dev = makedev_14_18(numbers[0], numbers[1]); 185 if (major_14_18(dev) != numbers[0]) 186 *error = iMajorError; 187 if (minor_14_18(dev) != numbers[1]) 188 *error = iMinorError; 189 } else 190 *error = tooManyFields; 191 return (dev); 192 } 193 194 195 #define major_8_24(x) ((int32_t)(((x) & 0xff000000) >> 24)) 196 #define minor_8_24(x) ((int32_t)(((x) & 0x00ffffff) >> 0)) 197 #define makedev_8_24(x,y) ((portdev_t)((((x) << 24) & 0xff000000) | \ 198 (((y) << 0) & 0x00ffffff))) 199 200 static portdev_t 201 pack_8_24(int n, u_long numbers[], const char **error) 202 { 203 portdev_t dev = 0; 204 205 if (n == 2) { 206 dev = makedev_8_24(numbers[0], numbers[1]); 207 if (major_8_24(dev) != numbers[0]) 208 *error = iMajorError; 209 if (minor_8_24(dev) != numbers[1]) 210 *error = iMinorError; 211 } else 212 *error = tooManyFields; 213 return (dev); 214 } 215 216 217 #define major_12_12_8(x) ((int32_t)(((x) & 0xfff00000) >> 20)) 218 #define unit_12_12_8(x) ((int32_t)(((x) & 0x000fff00) >> 8)) 219 #define subunit_12_12_8(x) ((int32_t)(((x) & 0x000000ff) >> 0)) 220 #define makedev_12_12_8(x,y,z) ((portdev_t)((((x) << 20) & 0xfff00000) | \ 221 (((y) << 8) & 0x000fff00) | \ 222 (((z) << 0) & 0x000000ff))) 223 224 static portdev_t 225 pack_bsdos(int n, u_long numbers[], const char **error) 226 { 227 portdev_t dev = 0; 228 229 if (n == 2) { 230 dev = makedev_12_20(numbers[0], numbers[1]); 231 if (major_12_20(dev) != numbers[0]) 232 *error = iMajorError; 233 if (minor_12_20(dev) != numbers[1]) 234 *error = iMinorError; 235 } else if (n == 3) { 236 dev = makedev_12_12_8(numbers[0], numbers[1], numbers[2]); 237 if (major_12_12_8(dev) != numbers[0]) 238 *error = iMajorError; 239 if (unit_12_12_8(dev) != numbers[1]) 240 *error = "invalid unit number"; 241 if (subunit_12_12_8(dev) != numbers[2]) 242 *error = "invalid subunit number"; 243 } else 244 *error = tooManyFields; 245 return (dev); 246 } 247 248 249 /* list of formats and pack functions */ 250 /* this list must be sorted lexically */ 251 struct format { 252 const char *name; 253 pack_t *pack; 254 } formats[] = { 255 {"386bsd", pack_8_8}, 256 {"4bsd", pack_8_8}, 257 {"bsdos", pack_bsdos}, 258 {"freebsd", pack_freebsd}, 259 {"hpux", pack_8_24}, 260 {"isc", pack_8_8}, 261 {"linux", pack_8_8}, 262 {"native", pack_native}, 263 {"netbsd", pack_netbsd}, 264 {"osf1", pack_12_20}, 265 {"sco", pack_8_8}, 266 {"solaris", pack_14_18}, 267 {"sunos", pack_8_8}, 268 {"svr3", pack_8_8}, 269 {"svr4", pack_14_18}, 270 {"ultrix", pack_8_8}, 271 }; 272 273 static int 274 compare_format(const void *key, const void *element) 275 { 276 const char *name; 277 const struct format *format; 278 279 name = key; 280 format = element; 281 282 return (strcmp(name, format->name)); 283 } 284 285 286 pack_t * 287 pack_find(const char *name) 288 { 289 struct format *format; 290 291 format = bsearch(name, formats, 292 sizeof(formats)/sizeof(formats[0]), 293 sizeof(formats[0]), compare_format); 294 if (format == 0) 295 return (NULL); 296 return (format->pack); 297 } 298