file.h revision 285830
1168515Sgshapiro/* 2168515Sgshapiro * Copyright (c) Ian F. Darwin 1986-1995. 3168515Sgshapiro * Software written by Ian F. Darwin and others; 4132943Sgshapiro * maintained 1995-present by Christos Zoulas and others. 5168515Sgshapiro * 6132943Sgshapiro * Redistribution and use in source and binary forms, with or without 7168515Sgshapiro * modification, are permitted provided that the following conditions 8132943Sgshapiro * are met: 9168515Sgshapiro * 1. Redistributions of source code must retain the above copyright 10132943Sgshapiro * notice immediately at the beginning of the file, without modification, 11168515Sgshapiro * this list of conditions, and the following disclaimer. 12168515Sgshapiro * 2. Redistributions in binary form must reproduce the above copyright 13132943Sgshapiro * notice, this list of conditions and the following disclaimer in the 14132943Sgshapiro * documentation and/or other materials provided with the distribution. 15132943Sgshapiro * 16132943Sgshapiro * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17168515Sgshapiro * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18132943Sgshapiro * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19168515Sgshapiro * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 20132943Sgshapiro * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21132943Sgshapiro * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22168515Sgshapiro * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23168515Sgshapiro * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24168515Sgshapiro * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25168515Sgshapiro * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26168515Sgshapiro * SUCH DAMAGE. 27168515Sgshapiro */ 28168515Sgshapiro/* 29168515Sgshapiro * file.h - definitions for file(1) program 30168515Sgshapiro * @(#)$File: file.h,v 1.168 2015/04/09 20:01:41 christos Exp $ 31132943Sgshapiro */ 32132943Sgshapiro 33132943Sgshapiro#ifndef __file_h__ 34168515Sgshapiro#define __file_h__ 35168515Sgshapiro 36168515Sgshapiro#ifdef HAVE_CONFIG_H 37132943Sgshapiro#include <config.h> 38132943Sgshapiro#endif 39168515Sgshapiro 40168515Sgshapiro#ifdef WIN32 41168515Sgshapiro #ifdef _WIN64 42168515Sgshapiro #define SIZE_T_FORMAT "I64" 43168515Sgshapiro #else 44168515Sgshapiro #define SIZE_T_FORMAT "" 45168515Sgshapiro #endif 46168515Sgshapiro #define INT64_T_FORMAT "I64" 47132943Sgshapiro#else 48132943Sgshapiro #define SIZE_T_FORMAT "z" 49168515Sgshapiro #define INT64_T_FORMAT "ll" 50168515Sgshapiro#endif 51132943Sgshapiro 52168515Sgshapiro#include <stdio.h> /* Include that here, to make sure __P gets defined */ 53168515Sgshapiro#include <errno.h> 54168515Sgshapiro#include <fcntl.h> /* For open and flags */ 55132943Sgshapiro#ifdef HAVE_STDINT_H 56168515Sgshapiro#ifndef __STDC_LIMIT_MACROS 57132943Sgshapiro#define __STDC_LIMIT_MACROS 58168515Sgshapiro#endif 59168515Sgshapiro#include <stdint.h> 60132943Sgshapiro#endif 61132943Sgshapiro#ifdef HAVE_INTTYPES_H 62168515Sgshapiro#include <inttypes.h> 63132943Sgshapiro#endif 64132943Sgshapiro#include <regex.h> 65168515Sgshapiro#include <time.h> 66168515Sgshapiro#include <sys/types.h> 67168515Sgshapiro#ifndef WIN32 68#include <sys/param.h> 69#endif 70/* Do this here and now, because struct stat gets re-defined on solaris */ 71#include <sys/stat.h> 72#include <stdarg.h> 73 74#define ENABLE_CONDITIONALS 75 76#ifndef MAGIC 77#define MAGIC "/etc/magic" 78#endif 79 80#if defined(__EMX__) || defined (WIN32) 81#define PATHSEP ';' 82#else 83#define PATHSEP ':' 84#endif 85 86#define private static 87 88#if HAVE_VISIBILITY && !defined(WIN32) 89#define public __attribute__ ((__visibility__("default"))) 90#ifndef protected 91#define protected __attribute__ ((__visibility__("hidden"))) 92#endif 93#else 94#define public 95#ifndef protected 96#define protected 97#endif 98#endif 99 100#ifndef __arraycount 101#define __arraycount(a) (sizeof(a) / sizeof(a[0])) 102#endif 103 104#ifndef __GNUC_PREREQ__ 105#ifdef __GNUC__ 106#define __GNUC_PREREQ__(x, y) \ 107 ((__GNUC__ == (x) && __GNUC_MINOR__ >= (y)) || \ 108 (__GNUC__ > (x))) 109#else 110#define __GNUC_PREREQ__(x, y) 0 111#endif 112#endif 113 114#ifndef __GNUC__ 115#ifndef __attribute__ 116#define __attribute__(a) 117#endif 118#endif 119 120#ifndef MIN 121#define MIN(a,b) (((a) < (b)) ? (a) : (b)) 122#endif 123 124#ifndef MAX 125#define MAX(a,b) (((a) > (b)) ? (a) : (b)) 126#endif 127 128#ifndef HOWMANY 129# define HOWMANY (1024 * 1024) /* how much of the file to look at */ 130#endif 131#define MAXMAGIS 8192 /* max entries in any one magic file 132 or directory */ 133#define MAXDESC 64 /* max len of text description/MIME type */ 134#define MAXMIME 80 /* max len of text MIME type */ 135#define MAXstring 64 /* max len of "string" types */ 136 137#define MAGICNO 0xF11E041C 138#define VERSIONNO 13 139#define FILE_MAGICSIZE 312 140 141#define FILE_LOAD 0 142#define FILE_CHECK 1 143#define FILE_COMPILE 2 144#define FILE_LIST 3 145 146union VALUETYPE { 147 uint8_t b; 148 uint16_t h; 149 uint32_t l; 150 uint64_t q; 151 uint8_t hs[2]; /* 2 bytes of a fixed-endian "short" */ 152 uint8_t hl[4]; /* 4 bytes of a fixed-endian "long" */ 153 uint8_t hq[8]; /* 8 bytes of a fixed-endian "quad" */ 154 char s[MAXstring]; /* the search string or regex pattern */ 155 unsigned char us[MAXstring]; 156 float f; 157 double d; 158}; 159 160struct magic { 161 /* Word 1 */ 162 uint16_t cont_level; /* level of ">" */ 163 uint8_t flag; 164#define INDIR 0x01 /* if '(...)' appears */ 165#define OFFADD 0x02 /* if '>&' or '>...(&' appears */ 166#define INDIROFFADD 0x04 /* if '>&(' appears */ 167#define UNSIGNED 0x08 /* comparison is unsigned */ 168#define NOSPACE 0x10 /* suppress space character before output */ 169#define BINTEST 0x20 /* test is for a binary type (set only 170 for top-level tests) */ 171#define TEXTTEST 0x40 /* for passing to file_softmagic */ 172 173 uint8_t factor; 174 175 /* Word 2 */ 176 uint8_t reln; /* relation (0=eq, '>'=gt, etc) */ 177 uint8_t vallen; /* length of string value, if any */ 178 uint8_t type; /* comparison type (FILE_*) */ 179 uint8_t in_type; /* type of indirection */ 180#define FILE_INVALID 0 181#define FILE_BYTE 1 182#define FILE_SHORT 2 183#define FILE_DEFAULT 3 184#define FILE_LONG 4 185#define FILE_STRING 5 186#define FILE_DATE 6 187#define FILE_BESHORT 7 188#define FILE_BELONG 8 189#define FILE_BEDATE 9 190#define FILE_LESHORT 10 191#define FILE_LELONG 11 192#define FILE_LEDATE 12 193#define FILE_PSTRING 13 194#define FILE_LDATE 14 195#define FILE_BELDATE 15 196#define FILE_LELDATE 16 197#define FILE_REGEX 17 198#define FILE_BESTRING16 18 199#define FILE_LESTRING16 19 200#define FILE_SEARCH 20 201#define FILE_MEDATE 21 202#define FILE_MELDATE 22 203#define FILE_MELONG 23 204#define FILE_QUAD 24 205#define FILE_LEQUAD 25 206#define FILE_BEQUAD 26 207#define FILE_QDATE 27 208#define FILE_LEQDATE 28 209#define FILE_BEQDATE 29 210#define FILE_QLDATE 30 211#define FILE_LEQLDATE 31 212#define FILE_BEQLDATE 32 213#define FILE_FLOAT 33 214#define FILE_BEFLOAT 34 215#define FILE_LEFLOAT 35 216#define FILE_DOUBLE 36 217#define FILE_BEDOUBLE 37 218#define FILE_LEDOUBLE 38 219#define FILE_BEID3 39 220#define FILE_LEID3 40 221#define FILE_INDIRECT 41 222#define FILE_QWDATE 42 223#define FILE_LEQWDATE 43 224#define FILE_BEQWDATE 44 225#define FILE_NAME 45 226#define FILE_USE 46 227#define FILE_CLEAR 47 228#define FILE_NAMES_SIZE 48 /* size of array to contain all names */ 229 230#define IS_STRING(t) \ 231 ((t) == FILE_STRING || \ 232 (t) == FILE_PSTRING || \ 233 (t) == FILE_BESTRING16 || \ 234 (t) == FILE_LESTRING16 || \ 235 (t) == FILE_REGEX || \ 236 (t) == FILE_SEARCH || \ 237 (t) == FILE_INDIRECT || \ 238 (t) == FILE_NAME || \ 239 (t) == FILE_USE) 240 241#define FILE_FMT_NONE 0 242#define FILE_FMT_NUM 1 /* "cduxXi" */ 243#define FILE_FMT_STR 2 /* "s" */ 244#define FILE_FMT_QUAD 3 /* "ll" */ 245#define FILE_FMT_FLOAT 4 /* "eEfFgG" */ 246#define FILE_FMT_DOUBLE 5 /* "eEfFgG" */ 247 248 /* Word 3 */ 249 uint8_t in_op; /* operator for indirection */ 250 uint8_t mask_op; /* operator for mask */ 251#ifdef ENABLE_CONDITIONALS 252 uint8_t cond; /* conditional type */ 253#else 254 uint8_t dummy; 255#endif 256 uint8_t factor_op; 257#define FILE_FACTOR_OP_PLUS '+' 258#define FILE_FACTOR_OP_MINUS '-' 259#define FILE_FACTOR_OP_TIMES '*' 260#define FILE_FACTOR_OP_DIV '/' 261#define FILE_FACTOR_OP_NONE '\0' 262 263#define FILE_OPS "&|^+-*/%" 264#define FILE_OPAND 0 265#define FILE_OPOR 1 266#define FILE_OPXOR 2 267#define FILE_OPADD 3 268#define FILE_OPMINUS 4 269#define FILE_OPMULTIPLY 5 270#define FILE_OPDIVIDE 6 271#define FILE_OPMODULO 7 272#define FILE_OPS_MASK 0x07 /* mask for above ops */ 273#define FILE_UNUSED_1 0x08 274#define FILE_UNUSED_2 0x10 275#define FILE_UNUSED_3 0x20 276#define FILE_OPINVERSE 0x40 277#define FILE_OPINDIRECT 0x80 278 279#ifdef ENABLE_CONDITIONALS 280#define COND_NONE 0 281#define COND_IF 1 282#define COND_ELIF 2 283#define COND_ELSE 3 284#endif /* ENABLE_CONDITIONALS */ 285 286 /* Word 4 */ 287 uint32_t offset; /* offset to magic number */ 288 /* Word 5 */ 289 int32_t in_offset; /* offset from indirection */ 290 /* Word 6 */ 291 uint32_t lineno; /* line number in magic file */ 292 /* Word 7,8 */ 293 union { 294 uint64_t _mask; /* for use with numeric and date types */ 295 struct { 296 uint32_t _count; /* repeat/line count */ 297 uint32_t _flags; /* modifier flags */ 298 } _s; /* for use with string types */ 299 } _u; 300#define num_mask _u._mask 301#define str_range _u._s._count 302#define str_flags _u._s._flags 303 /* Words 9-16 */ 304 union VALUETYPE value; /* either number or string */ 305 /* Words 17-32 */ 306 char desc[MAXDESC]; /* description */ 307 /* Words 33-52 */ 308 char mimetype[MAXMIME]; /* MIME type */ 309 /* Words 53-54 */ 310 char apple[8]; /* APPLE CREATOR/TYPE */ 311 /* Words 55-63 */ 312 char ext[64]; /* Popular extensions */ 313}; 314 315#define BIT(A) (1 << (A)) 316#define STRING_COMPACT_WHITESPACE BIT(0) 317#define STRING_COMPACT_OPTIONAL_WHITESPACE BIT(1) 318#define STRING_IGNORE_LOWERCASE BIT(2) 319#define STRING_IGNORE_UPPERCASE BIT(3) 320#define REGEX_OFFSET_START BIT(4) 321#define STRING_TEXTTEST BIT(5) 322#define STRING_BINTEST BIT(6) 323#define PSTRING_1_BE BIT(7) 324#define PSTRING_1_LE BIT(7) 325#define PSTRING_2_BE BIT(8) 326#define PSTRING_2_LE BIT(9) 327#define PSTRING_4_BE BIT(10) 328#define PSTRING_4_LE BIT(11) 329#define REGEX_LINE_COUNT BIT(11) 330#define PSTRING_LEN \ 331 (PSTRING_1_BE|PSTRING_2_LE|PSTRING_2_BE|PSTRING_4_LE|PSTRING_4_BE) 332#define PSTRING_LENGTH_INCLUDES_ITSELF BIT(12) 333#define STRING_TRIM BIT(13) 334#define CHAR_COMPACT_WHITESPACE 'W' 335#define CHAR_COMPACT_OPTIONAL_WHITESPACE 'w' 336#define CHAR_IGNORE_LOWERCASE 'c' 337#define CHAR_IGNORE_UPPERCASE 'C' 338#define CHAR_REGEX_OFFSET_START 's' 339#define CHAR_TEXTTEST 't' 340#define CHAR_TRIM 'T' 341#define CHAR_BINTEST 'b' 342#define CHAR_PSTRING_1_BE 'B' 343#define CHAR_PSTRING_1_LE 'B' 344#define CHAR_PSTRING_2_BE 'H' 345#define CHAR_PSTRING_2_LE 'h' 346#define CHAR_PSTRING_4_BE 'L' 347#define CHAR_PSTRING_4_LE 'l' 348#define CHAR_PSTRING_LENGTH_INCLUDES_ITSELF 'J' 349#define STRING_IGNORE_CASE (STRING_IGNORE_LOWERCASE|STRING_IGNORE_UPPERCASE) 350#define STRING_DEFAULT_RANGE 100 351 352#define INDIRECT_RELATIVE BIT(0) 353#define CHAR_INDIRECT_RELATIVE 'r' 354 355/* list of magic entries */ 356struct mlist { 357 struct magic *magic; /* array of magic entries */ 358 uint32_t nmagic; /* number of entries in array */ 359 void *map; /* internal resources used by entry */ 360 struct mlist *next, *prev; 361}; 362 363#ifdef __cplusplus 364#define CAST(T, b) static_cast<T>(b) 365#define RCAST(T, b) reinterpret_cast<T>(b) 366#else 367#define CAST(T, b) (T)(b) 368#define RCAST(T, b) (T)(b) 369#endif 370 371struct level_info { 372 int32_t off; 373 int got_match; 374#ifdef ENABLE_CONDITIONALS 375 int last_match; 376 int last_cond; /* used for error checking by parse() */ 377#endif 378}; 379 380#define MAGIC_SETS 2 381 382struct magic_set { 383 struct mlist *mlist[MAGIC_SETS]; /* list of regular entries */ 384 struct cont { 385 size_t len; 386 struct level_info *li; 387 } c; 388 struct out { 389 char *buf; /* Accumulation buffer */ 390 char *pbuf; /* Printable buffer */ 391 } o; 392 uint32_t offset; 393 int error; 394 int flags; /* Control magic tests. */ 395 int event_flags; /* Note things that happened. */ 396#define EVENT_HAD_ERR 0x01 397 const char *file; 398 size_t line; /* current magic line number */ 399 400 /* data for searches */ 401 struct { 402 const char *s; /* start of search in original source */ 403 size_t s_len; /* length of search region */ 404 size_t offset; /* starting offset in source: XXX - should this be off_t? */ 405 size_t rm_len; /* match length */ 406 } search; 407 408 /* FIXME: Make the string dynamically allocated so that e.g. 409 strings matched in files can be longer than MAXstring */ 410 union VALUETYPE ms_value; /* either number or string */ 411 uint16_t indir_max; 412 uint16_t name_max; 413 uint16_t elf_shnum_max; 414 uint16_t elf_phnum_max; 415 uint16_t elf_notes_max; 416#define FILE_INDIR_MAX 15 417#define FILE_NAME_MAX 30 418#define FILE_ELF_SHNUM_MAX 32768 419#define FILE_ELF_PHNUM_MAX 128 420#define FILE_ELF_NOTES_MAX 256 421}; 422 423/* Type for Unicode characters */ 424typedef unsigned long unichar; 425 426struct stat; 427#define FILE_T_LOCAL 1 428#define FILE_T_WINDOWS 2 429protected const char *file_fmttime(uint64_t, int, char *); 430protected struct magic_set *file_ms_alloc(int); 431protected void file_ms_free(struct magic_set *); 432protected int file_buffer(struct magic_set *, int, const char *, const void *, 433 size_t); 434protected int file_fsmagic(struct magic_set *, const char *, struct stat *); 435protected int file_pipe2file(struct magic_set *, int, const void *, size_t); 436protected int file_vprintf(struct magic_set *, const char *, va_list) 437 __attribute__((__format__(__printf__, 2, 0))); 438protected size_t file_printedlen(const struct magic_set *); 439protected int file_replace(struct magic_set *, const char *, const char *); 440protected int file_printf(struct magic_set *, const char *, ...) 441 __attribute__((__format__(__printf__, 2, 3))); 442protected int file_reset(struct magic_set *); 443protected int file_tryelf(struct magic_set *, int, const unsigned char *, 444 size_t); 445protected int file_trycdf(struct magic_set *, int, const unsigned char *, 446 size_t); 447#if HAVE_FORK 448protected int file_zmagic(struct magic_set *, int, const char *, 449 const unsigned char *, size_t); 450#endif 451protected int file_ascmagic(struct magic_set *, const unsigned char *, size_t, 452 int); 453protected int file_ascmagic_with_encoding(struct magic_set *, 454 const unsigned char *, size_t, unichar *, size_t, const char *, 455 const char *, int); 456protected int file_encoding(struct magic_set *, const unsigned char *, size_t, 457 unichar **, size_t *, const char **, const char **, const char **); 458protected int file_is_tar(struct magic_set *, const unsigned char *, size_t); 459protected int file_softmagic(struct magic_set *, const unsigned char *, size_t, 460 uint16_t, uint16_t *, int, int); 461protected int file_apprentice(struct magic_set *, const char *, int); 462protected int buffer_apprentice(struct magic_set *, struct magic **, 463 size_t *, size_t); 464protected int file_magicfind(struct magic_set *, const char *, struct mlist *); 465protected uint64_t file_signextend(struct magic_set *, struct magic *, 466 uint64_t); 467protected void file_badread(struct magic_set *); 468protected void file_badseek(struct magic_set *); 469protected void file_oomem(struct magic_set *, size_t); 470protected void file_error(struct magic_set *, int, const char *, ...) 471 __attribute__((__format__(__printf__, 3, 4))); 472protected void file_magerror(struct magic_set *, const char *, ...) 473 __attribute__((__format__(__printf__, 2, 3))); 474protected void file_magwarn(struct magic_set *, const char *, ...) 475 __attribute__((__format__(__printf__, 2, 3))); 476protected void file_mdump(struct magic *); 477protected void file_showstr(FILE *, const char *, size_t); 478protected size_t file_mbswidth(const char *); 479protected const char *file_getbuffer(struct magic_set *); 480protected ssize_t sread(int, void *, size_t, int); 481protected int file_check_mem(struct magic_set *, unsigned int); 482protected int file_looks_utf8(const unsigned char *, size_t, unichar *, 483 size_t *); 484protected size_t file_pstring_length_size(const struct magic *); 485protected size_t file_pstring_get_length(const struct magic *, const char *); 486protected char * file_printable(char *, size_t, const char *); 487#ifdef __EMX__ 488protected int file_os2_apptype(struct magic_set *, const char *, const void *, 489 size_t); 490#endif /* __EMX__ */ 491 492#if defined(HAVE_LOCALE_H) 493#include <locale.h> 494#endif 495#if defined(HAVE_XLOCALE_H) 496#include <xlocale.h> 497#endif 498 499typedef struct { 500 const char *pat; 501#if defined(HAVE_NEWLOCALE) && defined(HAVE_USELOCALE) && defined(HAVE_FREELOCALE) 502#define USE_C_LOCALE 503 locale_t old_lc_ctype; 504 locale_t c_lc_ctype; 505#endif 506 int rc; 507 regex_t rx; 508} file_regex_t; 509 510protected int file_regcomp(file_regex_t *, const char *, int); 511protected int file_regexec(file_regex_t *, const char *, size_t, regmatch_t *, 512 int); 513protected void file_regfree(file_regex_t *); 514protected void file_regerror(file_regex_t *, int, struct magic_set *); 515 516typedef struct { 517 char *buf; 518 uint32_t offset; 519} file_pushbuf_t; 520 521protected file_pushbuf_t *file_push_buffer(struct magic_set *); 522protected char *file_pop_buffer(struct magic_set *, file_pushbuf_t *); 523 524#ifndef COMPILE_ONLY 525extern const char *file_names[]; 526extern const size_t file_nnames; 527#endif 528 529#ifndef HAVE_STRERROR 530extern int sys_nerr; 531extern char *sys_errlist[]; 532#define strerror(e) \ 533 (((e) >= 0 && (e) < sys_nerr) ? sys_errlist[(e)] : "Unknown error") 534#endif 535 536#ifndef HAVE_STRTOUL 537#define strtoul(a, b, c) strtol(a, b, c) 538#endif 539 540#ifndef HAVE_PREAD 541ssize_t pread(int, void *, size_t, off_t); 542#endif 543#ifndef HAVE_VASPRINTF 544int vasprintf(char **, const char *, va_list); 545#endif 546#ifndef HAVE_ASPRINTF 547int asprintf(char **, const char *, ...); 548#endif 549 550#ifndef HAVE_STRLCPY 551size_t strlcpy(char *, const char *, size_t); 552#endif 553#ifndef HAVE_STRLCAT 554size_t strlcat(char *, const char *, size_t); 555#endif 556#ifndef HAVE_STRCASESTR 557char *strcasestr(const char *, const char *); 558#endif 559#ifndef HAVE_GETLINE 560ssize_t getline(char **, size_t *, FILE *); 561ssize_t getdelim(char **, size_t *, int, FILE *); 562#endif 563#ifndef HAVE_CTIME_R 564char *ctime_r(const time_t *, char *); 565#endif 566#ifndef HAVE_ASCTIME_R 567char *asctime_r(const struct tm *, char *); 568#endif 569#ifndef HAVE_GMTIME_R 570struct tm *gmtime_r(const time_t *, struct tm *); 571#endif 572#ifndef HAVE_LOCALTIME_R 573struct tm *localtime_r(const time_t *, struct tm *); 574#endif 575#ifndef HAVE_FMTCHECK 576const char *fmtcheck(const char *, const char *) 577 __attribute__((__format_arg__(2))); 578#endif 579 580#if defined(HAVE_MMAP) && defined(HAVE_SYS_MMAN_H) && !defined(QUICK) 581#define QUICK 582#endif 583 584#ifndef O_BINARY 585#define O_BINARY 0 586#endif 587 588#ifndef __cplusplus 589#if defined(__GNUC__) && (__GNUC__ >= 3) 590#define FILE_RCSID(id) \ 591static const char rcsid[] __attribute__((__used__)) = id; 592#else 593#define FILE_RCSID(id) \ 594static const char *rcsid(const char *p) { \ 595 return rcsid(p = id); \ 596} 597#endif 598#else 599#define FILE_RCSID(id) 600#endif 601#ifndef __RCSID 602#define __RCSID(a) 603#endif 604 605#endif /* __file_h__ */ 606