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dis-bench / src /php /php-src /ext /fileinfo /libmagic /file.h
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/*
* Copyright (c) Ian F. Darwin 1986-1995.
* Software written by Ian F. Darwin and others;
* maintained 1995-present by Christos Zoulas and others.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice immediately at the beginning of the file, without modification,
* this list of conditions, and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* file.h - definitions for file(1) program
* @(#)$File: file.h,v 1.257 2024/11/25 22:31:53 christos Exp $
*/
#ifndef __file_h__
#define __file_h__
#include "config.h"
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif
#ifdef HAVE_INTTYPES_H
#include <inttypes.h>
#endif
#ifndef __STDC_LIMIT_MACROS
#define __STDC_LIMIT_MACROS
#endif
#ifndef __STDC_FORMAT_MACROS
#define __STDC_FORMAT_MACROS
#endif
#ifdef _WIN32
# ifdef PRIu32
# ifdef _WIN64
# define SIZE_T_FORMAT PRIu64
# else
# define SIZE_T_FORMAT PRIu32
# endif
# define INT64_T_FORMAT PRIi64
# define INTMAX_T_FORMAT PRIiMAX
# else
# ifdef _WIN64
# define SIZE_T_FORMAT "I64"
# else
# define SIZE_T_FORMAT ""
# endif
# define INT64_T_FORMAT "I64"
# define INTMAX_T_FORMAT "I64"
# endif
#else
# define SIZE_T_FORMAT "z"
# define INT64_T_FORMAT "ll"
# define INTMAX_T_FORMAT "j"
#endif
#include <stdio.h> /* Include that here, to make sure __P gets defined */
#include <errno.h>
#include <fcntl.h> /* For open and flags */
#include <sys/types.h>
#ifndef WIN32
#include <sys/param.h>
#endif
/* Do this here and now, because struct stat gets re-defined on solaris */
#include <sys/stat.h>
#include <stdarg.h>
#define ENABLE_CONDITIONALS
#ifndef MAGIC
#define MAGIC "/etc/magic"
#endif
#if defined(__EMX__) || defined (WIN32)
#define PATHSEP ';'
#else
#define PATHSEP ':'
#endif
#define file_private static
#if HAVE_VISIBILITY
# if defined(WIN32)
# define file_public __declspec(dllexport)
# ifndef file_protected
# define file_protected
# endif
# else
# define file_public __attribute__((__visibility__("default")))
# ifndef file_protected
# define file_protected __attribute__((__visibility__("hidden")))
# endif
# endif
#else
# define file_public
# ifndef file_protected
# define file_protected
# endif
#endif
#ifndef __arraycount
#define __arraycount(a) (sizeof(a) / sizeof(a[0]))
#endif
#ifndef __GNUC_PREREQ__
#ifdef __GNUC__
#define __GNUC_PREREQ__(x, y) \
((__GNUC__ == (x) && __GNUC_MINOR__ >= (y)) || \
(__GNUC__ > (x)))
#else
#define __GNUC_PREREQ__(x, y) 0
#endif
#endif
#ifndef __GNUC__
#ifndef __attribute__
#define __attribute__(a)
#endif
#endif
#ifndef MIN
#define MIN(a,b) (((a) < (b)) ? (a) : (b))
#endif
#ifndef MAX
#define MAX(a,b) (((a) > (b)) ? (a) : (b))
#endif
#ifndef O_CLOEXEC
# define O_CLOEXEC 0
#endif
#ifndef FD_CLOEXEC
# define FD_CLOEXEC 1
#endif
/*
* Dec 31, 23:59:59 9999
* we need to make sure that we don't exceed 9999 because some libc
* implementations like muslc crash otherwise. If you are unlucky
* to be running on a system with a 32 bit time_t, then it is even less.
*/
#define MAX_CTIME \
CAST(time_t, sizeof(time_t) > 4 ? 0x3afff487cfULL : 0x7fffffffULL)
#define FILE_BADSIZE CAST(size_t, ~0ul)
#define MAXDESC 64 /* max len of text description/MIME type */
#define MAXMIME 80 /* max len of text MIME type */
#define MAXEXT 120 /* max len of text extensions */
#define MAXstring 128 /* max len of "string" types */
#define MAGICNO 0xF11E041C
#define VERSIONNO 19
#define FILE_MAGICSIZE 432
#define FILE_GUID_SIZE sizeof("XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX")
#define FILE_LOAD 0
#define FILE_CHECK 1
#define FILE_COMPILE 2
#define FILE_LIST 3
struct buffer {
int fd;
zend_stat_t st;
const void *fbuf;
size_t flen;
zend_off_t eoff;
void *ebuf;
size_t elen;
};
union VALUETYPE {
uint8_t b;
uint16_t h;
uint32_t l;
uint64_t q;
uint8_t hs[2]; /* 2 bytes of a fixed-endian "short" */
uint8_t hl[4]; /* 4 bytes of a fixed-endian "long" */
uint8_t hq[8]; /* 8 bytes of a fixed-endian "quad" */
char s[MAXstring]; /* the search string or regex pattern */
unsigned char us[MAXstring];
uint64_t guid[2];
float f;
double d;
};
struct magic {
/* Word 1 */
uint16_t cont_level; /* level of ">" */
uint8_t flag;
#define INDIR 0x01 /* if '(...)' appears */
#define OFFADD 0x02 /* if '>&' or '>...(&' appears */
#define INDIROFFADD 0x04 /* if '>&(' appears */
#define UNSIGNED 0x08 /* comparison is unsigned */
#define NOSPACE 0x10 /* suppress space character before output */
#define BINTEST 0x20 /* test is for a binary type (set only
for top-level tests) */
#define TEXTTEST 0x40 /* for passing to file_softmagic */
#define OFFNEGATIVE 0x80 /* relative to the end of file */
uint8_t factor;
/* Word 2 */
uint8_t reln; /* relation (0=eq, '>'=gt, etc) */
uint8_t vallen; /* length of string value, if any */
uint8_t type; /* comparison type (FILE_*) */
uint8_t in_type; /* type of indirection */
#define FILE_INVALID 0
#define FILE_BYTE 1
#define FILE_SHORT 2
#define FILE_DEFAULT 3
#define FILE_LONG 4
#define FILE_STRING 5
#define FILE_DATE 6
#define FILE_BESHORT 7
#define FILE_BELONG 8
#define FILE_BEDATE 9
#define FILE_LESHORT 10
#define FILE_LELONG 11
#define FILE_LEDATE 12
#define FILE_PSTRING 13
#define FILE_LDATE 14
#define FILE_BELDATE 15
#define FILE_LELDATE 16
#define FILE_REGEX 17
#define FILE_BESTRING16 18
#define FILE_LESTRING16 19
#define FILE_SEARCH 20
#define FILE_MEDATE 21
#define FILE_MELDATE 22
#define FILE_MELONG 23
#define FILE_QUAD 24
#define FILE_LEQUAD 25
#define FILE_BEQUAD 26
#define FILE_QDATE 27
#define FILE_LEQDATE 28
#define FILE_BEQDATE 29
#define FILE_QLDATE 30
#define FILE_LEQLDATE 31
#define FILE_BEQLDATE 32
#define FILE_FLOAT 33
#define FILE_BEFLOAT 34
#define FILE_LEFLOAT 35
#define FILE_DOUBLE 36
#define FILE_BEDOUBLE 37
#define FILE_LEDOUBLE 38
#define FILE_BEID3 39
#define FILE_LEID3 40
#define FILE_INDIRECT 41
#define FILE_QWDATE 42
#define FILE_LEQWDATE 43
#define FILE_BEQWDATE 44
#define FILE_NAME 45
#define FILE_USE 46
#define FILE_CLEAR 47
#define FILE_DER 48
#define FILE_GUID 49
#define FILE_OFFSET 50
#define FILE_BEVARINT 51
#define FILE_LEVARINT 52
#define FILE_MSDOSDATE 53
#define FILE_LEMSDOSDATE 54
#define FILE_BEMSDOSDATE 55
#define FILE_MSDOSTIME 56
#define FILE_LEMSDOSTIME 57
#define FILE_BEMSDOSTIME 58
#define FILE_OCTAL 59
#define FILE_NAMES_SIZE 60 /* size of array to contain all names */
#define IS_LIBMAGIC_STRING(t) \
((t) == FILE_STRING || \
(t) == FILE_PSTRING || \
(t) == FILE_BESTRING16 || \
(t) == FILE_LESTRING16 || \
(t) == FILE_REGEX || \
(t) == FILE_SEARCH || \
(t) == FILE_INDIRECT || \
(t) == FILE_NAME || \
(t) == FILE_USE || \
(t) == FILE_OCTAL)
#define FILE_FMT_NONE 0
#define FILE_FMT_NUM 1 /* "cduxXi" */
#define FILE_FMT_STR 2 /* "s" */
#define FILE_FMT_QUAD 3 /* "ll" */
#define FILE_FMT_FLOAT 4 /* "eEfFgG" */
#define FILE_FMT_DOUBLE 5 /* "eEfFgG" */
/* Word 3 */
uint8_t in_op; /* operator for indirection */
uint8_t mask_op; /* operator for mask */
#ifdef ENABLE_CONDITIONALS
uint8_t cond; /* conditional type */
#else
uint8_t dummy;
#endif
uint8_t factor_op;
#define FILE_FACTOR_OP_PLUS '+'
#define FILE_FACTOR_OP_MINUS '-'
#define FILE_FACTOR_OP_TIMES '*'
#define FILE_FACTOR_OP_DIV '/'
#define FILE_FACTOR_OP_NONE '\0'
#define FILE_OPS "&|^+-*/%"
#define FILE_OPAND 0
#define FILE_OPOR 1
#define FILE_OPXOR 2
#define FILE_OPADD 3
#define FILE_OPMINUS 4
#define FILE_OPMULTIPLY 5
#define FILE_OPDIVIDE 6
#define FILE_OPMODULO 7
#define FILE_OPS_MASK 0x07 /* mask for above ops */
#define FILE_UNUSED_1 0x08
#define FILE_UNUSED_2 0x10
#define FILE_OPSIGNED 0x20
#define FILE_OPINVERSE 0x40
#define FILE_OPINDIRECT 0x80
#ifdef ENABLE_CONDITIONALS
#define COND_NONE 0
#define COND_IF 1
#define COND_ELIF 2
#define COND_ELSE 3
#endif /* ENABLE_CONDITIONALS */
/* Word 4 */
int32_t offset; /* offset to magic number */
/* Word 5 */
int32_t in_offset; /* offset from indirection */
/* Word 6 */
uint32_t lineno; /* line number in magic file */
/* Word 7,8 */
union {
uint64_t _mask; /* for use with numeric and date types */
struct {
uint32_t _count; /* repeat/line count */
uint32_t _flags; /* modifier flags */
} _s; /* for use with string types */
} _u;
#define num_mask _u._mask
#define str_range _u._s._count
#define str_flags _u._s._flags
/* Words 9-24 */
union VALUETYPE value; /* either number or string */
/* Words 25-40 */
char desc[MAXDESC]; /* description */
/* Words 41-60 */
char mimetype[MAXMIME]; /* MIME type */
/* Words 61-62 */
char apple[8]; /* APPLE CREATOR/TYPE */
/* Words 63-78 */
char ext[MAXEXT]; /* Popular extensions from old 64 raised by 56 for sqlite/sqlite3/... */
};
#define BIT(A) (1 << (A))
#define STRING_COMPACT_WHITESPACE BIT(0)
#define STRING_COMPACT_OPTIONAL_WHITESPACE BIT(1)
#define STRING_IGNORE_LOWERCASE BIT(2)
#define STRING_IGNORE_UPPERCASE BIT(3)
#define REGEX_OFFSET_START BIT(4)
#define STRING_TEXTTEST BIT(5)
#define STRING_BINTEST BIT(6)
#define PSTRING_1_BE BIT(7)
#define PSTRING_1_LE BIT(7)
#define PSTRING_2_BE BIT(8)
#define PSTRING_2_LE BIT(9)
#define PSTRING_4_BE BIT(10)
#define PSTRING_4_LE BIT(11)
#define REGEX_LINE_COUNT BIT(11)
#define PSTRING_LEN \
(PSTRING_1_BE|PSTRING_2_LE|PSTRING_2_BE|PSTRING_4_LE|PSTRING_4_BE)
#define PSTRING_LENGTH_INCLUDES_ITSELF BIT(12)
#define STRING_TRIM BIT(13)
#define STRING_FULL_WORD BIT(14)
#define CHAR_COMPACT_WHITESPACE 'W'
#define CHAR_COMPACT_OPTIONAL_WHITESPACE 'w'
#define CHAR_IGNORE_LOWERCASE 'c'
#define CHAR_IGNORE_UPPERCASE 'C'
#define CHAR_REGEX_OFFSET_START 's'
#define CHAR_TEXTTEST 't'
#define CHAR_TRIM 'T'
#define CHAR_FULL_WORD 'f'
#define CHAR_BINTEST 'b'
#define CHAR_PSTRING_1_BE 'B'
#define CHAR_PSTRING_1_LE 'B'
#define CHAR_PSTRING_2_BE 'H'
#define CHAR_PSTRING_2_LE 'h'
#define CHAR_PSTRING_4_BE 'L'
#define CHAR_PSTRING_4_LE 'l'
#define CHAR_PSTRING_LENGTH_INCLUDES_ITSELF 'J'
#define STRING_IGNORE_CASE (STRING_IGNORE_LOWERCASE|STRING_IGNORE_UPPERCASE)
#define STRING_DEFAULT_RANGE 100
#define INDIRECT_RELATIVE BIT(0)
#define CHAR_INDIRECT_RELATIVE 'r'
/* list of magic entries */
struct mlist {
struct magic *magic; /* array of magic entries */
size_t nmagic; /* number of entries in array */
void *map; /* internal resources used by entry */
struct mlist *next, *prev;
};
#ifdef __cplusplus
#define CAST(T, b) static_cast<T>(b)
#define RCAST(T, b) reinterpret_cast<T>(b)
#define CCAST(T, b) const_cast<T>(b)
#else
#define CAST(T, b) ((T)(b))
#define RCAST(T, b) ((T)(uintptr_t)(b))
#define CCAST(T, b) ((T)(uintptr_t)(b))
#endif
struct level_info {
int32_t off;
int got_match;
#ifdef ENABLE_CONDITIONALS
int last_match;
int last_cond; /* used for error checking by parse() */
#endif
};
struct cont {
size_t len;
struct level_info *li;
};
#define MAGIC_SETS 2
struct magic_set {
struct mlist *mlist[MAGIC_SETS]; /* list of regular entries */
struct cont c;
struct out {
char *buf; /* Accumulation buffer */
size_t blen; /* Length of buffer */
char *pbuf; /* Printable buffer */
} o;
uint32_t offset; /* a copy of m->offset while we */
/* are working on the magic entry */
uint32_t eoffset; /* offset from end of file */
int error;
int flags; /* Control magic tests. */
int event_flags; /* Note things that happened. */
#define EVENT_HAD_ERR 0x01
const char *file;
size_t line; /* current magic line number */
mode_t mode; /* copy of current stat mode */
uint16_t magwarn; /* current number of warnings */
/* data for searches */
struct {
const char *s; /* start of search in original source */
size_t s_len; /* length of search region */
size_t offset; /* starting offset in source: XXX - should this be off_t? */
size_t rm_len; /* match length */
} search;
/* FIXME: Make the string dynamically allocated so that e.g.
strings matched in files can be longer than MAXstring */
union VALUETYPE ms_value; /* either number or string */
uint16_t indir_max;
uint16_t name_max;
uint16_t elf_shnum_max;
uint16_t elf_phnum_max;
uint16_t elf_notes_max;
uint16_t regex_max;
uint16_t magwarn_max;
size_t bytes_max; /* number of bytes to read from file */
size_t encoding_max; /* bytes to look for encoding */
size_t elf_shsize_max;
#ifndef FILE_BYTES_MAX
# define FILE_BYTES_MAX (7 * 1024 * 1024)/* how much of the file to look at */
#endif /* above 0x6ab0f4 map offset for HelveticaNeue.dfont */
#define FILE_ELF_NOTES_MAX 256
#define FILE_ELF_PHNUM_MAX 2048
#define FILE_ELF_SHNUM_MAX 32768
#define FILE_ELF_SHSIZE_MAX (128 * 1024 * 1024)
#define FILE_INDIR_MAX 50
#define FILE_NAME_MAX 100
#define FILE_REGEX_MAX 8192
#define FILE_ENCODING_MAX (64 * 1024)
#define FILE_MAGWARN_MAX 64
#if defined(HAVE_NEWLOCALE) && defined(HAVE_USELOCALE) && defined(HAVE_FREELOCALE)
#define USE_C_LOCALE
locale_t c_lc_ctype;
#define file_locale_used
#else
#define file_locale_used __attribute__((__unused__))
#endif
};
/* Type for Unicode characters */
typedef unsigned long file_unichar_t;
struct stat;
#define FILE_T_LOCAL 1
#define FILE_T_WINDOWS 2
file_protected const char *file_fmtdatetime(char *, size_t, uint64_t, int);
file_protected const char *file_fmtdate(char *, size_t, uint16_t);
file_protected const char *file_fmttime(char *, size_t, uint16_t);
file_protected const char *file_fmtvarint(char *, size_t, const unsigned char *,
int);
file_protected const char *file_fmtnum(char *, size_t, const char *, int);
file_protected struct magic_set *file_ms_alloc(int);
file_protected void file_ms_free(struct magic_set *);
file_protected int file_buffer(struct magic_set *, php_stream *, zend_stat_t *, const char *, const void *,
size_t);
file_protected int file_fsmagic(struct magic_set *, const char *, zend_stat_t *);
file_protected int file_pipe2file(struct magic_set *, int, const void *,
size_t);
file_protected int file_vprintf(struct magic_set *, const char *, va_list)
__attribute__((__format__(__printf__, 2, 0)));
file_protected int file_separator(struct magic_set *);
file_protected char *file_copystr(char *, size_t, size_t, const char *);
file_protected int file_checkfmt(char *, size_t, const char *);
file_protected size_t file_printedlen(const struct magic_set *);
file_protected int file_print_guid(char *, size_t, const uint64_t *);
file_protected int file_parse_guid(const char *, uint64_t *);
file_protected int file_replace(struct magic_set *, const char *, const char *);
file_protected int file_printf(struct magic_set *, const char *, ...)
__attribute__((__format__(__printf__, 2, 3)));
file_protected int file_reset(struct magic_set *, int);
file_protected int file_tryelf(struct magic_set *, const struct buffer *);
file_protected int file_trycdf(struct magic_set *, const struct buffer *);
#ifdef PHP_FILEINFO_UNCOMPRESS
file_protected int file_zmagic(struct magic_set *, const struct buffer *,
const char *);
#endif
file_protected int file_ascmagic(struct magic_set *, const struct buffer *,
int);
file_protected int file_ascmagic_with_encoding(struct magic_set *,
const struct buffer *, file_unichar_t *, size_t, const char *, const char *, int);
file_protected int file_encoding(struct magic_set *, const struct buffer *,
file_unichar_t **, size_t *, const char **, const char **, const char **);
file_protected int file_is_json(struct magic_set *, const struct buffer *);
file_protected int file_is_csv(struct magic_set *, const struct buffer *, int,
const char *);
file_protected int file_is_simh(struct magic_set *, const struct buffer *);
file_protected int file_is_tar(struct magic_set *, const struct buffer *);
file_protected int file_softmagic(struct magic_set *, const struct buffer *,
uint16_t *, uint16_t *, int, int);
file_protected int file_apprentice(struct magic_set *, const char *, int);
file_protected size_t file_magic_strength(const struct magic *, size_t);
file_protected int buffer_apprentice(struct magic_set *, struct magic **,
size_t *, size_t);
file_protected int file_magicfind(struct magic_set *, const char *,
struct mlist *);
file_protected uint64_t file_signextend(struct magic_set *, struct magic *,
uint64_t);
file_protected uintmax_t file_varint2uintmax_t(const unsigned char *, int,
size_t *);
file_protected void file_badread(struct magic_set *);
file_protected void file_badseek(struct magic_set *);
file_protected void file_oomem(struct magic_set *, size_t);
file_protected void file_error(struct magic_set *, int, const char *, ...)
__attribute__((__format__(__printf__, 3, 4)));
file_protected void file_magerror(struct magic_set *, const char *, ...)
__attribute__((__format__(__printf__, 2, 3)));
file_protected void file_magwarn(struct magic_set *, const char *, ...)
__attribute__((__format__(__printf__, 2, 3)));
file_protected void file_magwarn1(const char *, ...)
__attribute__((__format__(__printf__, 1, 2)));
file_protected void file_mdump(struct magic *);
file_protected void file_showstr(FILE *, const char *, size_t);
file_protected size_t file_mbswidth(struct magic_set *, const char *);
file_protected const char *file_getbuffer(struct magic_set *);
file_protected ssize_t sread(int, void *, size_t, int);
file_protected int file_check_mem(struct magic_set *, unsigned int);
file_protected int file_looks_utf8(const unsigned char *, size_t,
file_unichar_t *, size_t *);
file_protected size_t file_pstring_length_size(struct magic_set *,
const struct magic *);
file_protected size_t file_pstring_get_length(struct magic_set *,
const struct magic *, const char *);
file_protected char * file_printable(struct magic_set *, char *, size_t,
const char *, size_t);
#ifdef __EMX__
file_protected int file_os2_apptype(struct magic_set *, const char *,
const void *, size_t);
#endif /* __EMX__ */
file_protected int file_pipe_closexec(int *);
file_protected int file_clear_closexec(int);
file_protected char *file_strtrim(char *);
file_protected void buffer_init(struct buffer *, int, const zend_stat_t *,
const void *, size_t);
file_protected void buffer_fini(struct buffer *);
file_protected int buffer_fill(const struct buffer *);
typedef struct {
char *buf;
size_t blen;
uint32_t offset;
} file_pushbuf_t;
file_protected file_pushbuf_t *file_push_buffer(struct magic_set *);
file_protected char *file_pop_buffer(struct magic_set *, file_pushbuf_t *);
#ifndef COMPILE_ONLY
extern file_protected const char *file_names[];
extern file_protected const size_t file_nnames;
#endif
#ifndef HAVE_STRLCPY
size_t strlcpy(char *, const char *, size_t);
#endif
#ifndef HAVE_STRLCAT
size_t strlcat(char *, const char *, size_t);
#endif
#ifndef HAVE_STRCASESTR
char *strcasestr(const char *, const char *);
#endif
#ifndef HAVE_GETLINE
ssize_t getline(char **, size_t *, FILE *);
ssize_t getdelim(char **, size_t *, int, FILE *);
#endif
#ifndef HAVE_CTIME_R
char *ctime_r(const time_t *, char *);
#endif
#ifndef HAVE_ASCTIME_R
char *asctime_r(const struct tm *, char *);
#endif
#if defined(HAVE_MMAP) && defined(HAVE_SYS_MMAN_H) && !defined(QUICK)
#define QUICK
#endif
#ifndef O_BINARY
#define O_BINARY 0
#endif
#ifndef O_NONBLOCK
#define O_NONBLOCK 0
#endif
#ifndef __cplusplus
#if defined(__GNUC__) && (__GNUC__ >= 3)
#define FILE_RCSID(id) \
static const char rcsid[] __attribute__((__used__)) = id;
#else
#define FILE_RCSID(id) \
static const char *rcsid(const char *p) { \
return rcsid(p = id); \
}
#endif
#else
#define FILE_RCSID(id)
#endif
#ifndef __RCSID
#define __RCSID(a)
#endif
#endif /* __file_h__ */