1/*
2 * Copyright (c) Ian F. Darwin 1986-1995.
3 * Software written by Ian F. Darwin and others;
4 * maintained 1995-present by Christos Zoulas and others.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice immediately at the beginning of the file, without modification,
11 *    this list of conditions, and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28/*
29 * file.h - definitions for file(1) program
30 * @(#)$File: file.h,v 1.208 2019/06/26 20:31:31 christos Exp $
31 */
32
33#ifndef __file_h__
34#define __file_h__
35
36#ifdef HAVE_CONFIG_H
37#include <config.h>
38#endif
39#ifdef HAVE_STDINT_H
40#ifndef __STDC_LIMIT_MACROS
41#define __STDC_LIMIT_MACROS
42#endif
43#ifndef __STDC_FORMAT_MACROS
44#define __STDC_FORMAT_MACROS
45#endif
46
47#ifdef WIN32
48  #ifdef _WIN64
49    #define SIZE_T_FORMAT "I64"
50  #else
51    #define SIZE_T_FORMAT ""
52  #endif
53  #define INT64_T_FORMAT "I64"
54  #define INTMAX_T_FORMAT "I64"
55#else
56  #define SIZE_T_FORMAT "z"
57  #define INT64_T_FORMAT "ll"
58  #define INTMAX_T_FORMAT "j"
59#endif
60#include <stdint.h>
61#endif
62
63#include <stdio.h>	/* Include that here, to make sure __P gets defined */
64#include <errno.h>
65#include <fcntl.h>	/* For open and flags */
66#ifdef HAVE_INTTYPES_H
67#include <inttypes.h>
68#endif
69#include <regex.h>
70#include <time.h>
71#include <sys/types.h>
72#ifndef WIN32
73#include <sys/param.h>
74#endif
75/* Do this here and now, because struct stat gets re-defined on solaris */
76#include <sys/stat.h>
77#include <stdarg.h>
78
79#define ENABLE_CONDITIONALS
80
81#ifndef MAGIC
82#define MAGIC "/etc/magic"
83#endif
84
85#if defined(__EMX__) || defined (WIN32)
86#define PATHSEP	';'
87#else
88#define PATHSEP	':'
89#endif
90
91#define private static
92
93#if HAVE_VISIBILITY && !defined(WIN32)
94#define public  __attribute__ ((__visibility__("default")))
95#ifndef protected
96#define protected __attribute__ ((__visibility__("hidden")))
97#endif
98#else
99#define public
100#ifndef protected
101#define protected
102#endif
103#endif
104
105#ifndef __arraycount
106#define __arraycount(a) (sizeof(a) / sizeof(a[0]))
107#endif
108
109#ifndef __GNUC_PREREQ__
110#ifdef __GNUC__
111#define	__GNUC_PREREQ__(x, y)						\
112	((__GNUC__ == (x) && __GNUC_MINOR__ >= (y)) ||			\
113	 (__GNUC__ > (x)))
114#else
115#define	__GNUC_PREREQ__(x, y)	0
116#endif
117#endif
118
119#ifndef __GNUC__
120#ifndef __attribute__
121#define __attribute__(a)
122#endif
123#endif
124
125#ifndef MIN
126#define	MIN(a,b)	(((a) < (b)) ? (a) : (b))
127#endif
128
129#ifndef MAX
130#define	MAX(a,b)	(((a) > (b)) ? (a) : (b))
131#endif
132
133#ifndef FILE_BYTES_MAX
134# define FILE_BYTES_MAX (1024 * 1024)	/* how much of the file to look at */
135#endif
136#define MAXMAGIS 8192		/* max entries in any one magic file
137				   or directory */
138#define MAXDESC	64		/* max len of text description/MIME type */
139#define MAXMIME	80		/* max len of text MIME type */
140#define MAXstring 96		/* max len of "string" types */
141
142#define MAGICNO		0xF11E041C
143#define VERSIONNO	14
144#define FILE_MAGICSIZE	344
145
146#define	FILE_LOAD	0
147#define FILE_CHECK	1
148#define FILE_COMPILE	2
149#define FILE_LIST	3
150
151struct buffer {
152	int fd;
153	struct stat st;
154	const void *fbuf;
155	size_t flen;
156	off_t eoff;
157	void *ebuf;
158	size_t elen;
159};
160
161union VALUETYPE {
162	uint8_t b;
163	uint16_t h;
164	uint32_t l;
165	uint64_t q;
166	uint8_t hs[2];	/* 2 bytes of a fixed-endian "short" */
167	uint8_t hl[4];	/* 4 bytes of a fixed-endian "long" */
168	uint8_t hq[8];	/* 8 bytes of a fixed-endian "quad" */
169	char s[MAXstring];	/* the search string or regex pattern */
170	unsigned char us[MAXstring];
171	float f;
172	double d;
173};
174
175struct magic {
176	/* Word 1 */
177	uint16_t cont_level;	/* level of ">" */
178	uint8_t flag;
179#define INDIR		0x01	/* if '(...)' appears */
180#define OFFADD		0x02	/* if '>&' or '>...(&' appears */
181#define INDIROFFADD	0x04	/* if '>&(' appears */
182#define UNSIGNED	0x08	/* comparison is unsigned */
183#define NOSPACE		0x10	/* suppress space character before output */
184#define BINTEST		0x20	/* test is for a binary type (set only
185				   for top-level tests) */
186#define TEXTTEST	0x40	/* for passing to file_softmagic */
187
188	uint8_t factor;
189
190	/* Word 2 */
191	uint8_t reln;		/* relation (0=eq, '>'=gt, etc) */
192	uint8_t vallen;		/* length of string value, if any */
193	uint8_t type;		/* comparison type (FILE_*) */
194	uint8_t in_type;	/* type of indirection */
195#define 			FILE_INVALID	0
196#define 			FILE_BYTE	1
197#define				FILE_SHORT	2
198#define				FILE_DEFAULT	3
199#define				FILE_LONG	4
200#define				FILE_STRING	5
201#define				FILE_DATE	6
202#define				FILE_BESHORT	7
203#define				FILE_BELONG	8
204#define				FILE_BEDATE	9
205#define				FILE_LESHORT	10
206#define				FILE_LELONG	11
207#define				FILE_LEDATE	12
208#define				FILE_PSTRING	13
209#define				FILE_LDATE	14
210#define				FILE_BELDATE	15
211#define				FILE_LELDATE	16
212#define				FILE_REGEX	17
213#define				FILE_BESTRING16	18
214#define				FILE_LESTRING16	19
215#define				FILE_SEARCH	20
216#define				FILE_MEDATE	21
217#define				FILE_MELDATE	22
218#define				FILE_MELONG	23
219#define				FILE_QUAD	24
220#define				FILE_LEQUAD	25
221#define				FILE_BEQUAD	26
222#define				FILE_QDATE	27
223#define				FILE_LEQDATE	28
224#define				FILE_BEQDATE	29
225#define				FILE_QLDATE	30
226#define				FILE_LEQLDATE	31
227#define				FILE_BEQLDATE	32
228#define				FILE_FLOAT	33
229#define				FILE_BEFLOAT	34
230#define				FILE_LEFLOAT	35
231#define				FILE_DOUBLE	36
232#define				FILE_BEDOUBLE	37
233#define				FILE_LEDOUBLE	38
234#define				FILE_BEID3	39
235#define				FILE_LEID3	40
236#define				FILE_INDIRECT	41
237#define				FILE_QWDATE	42
238#define				FILE_LEQWDATE	43
239#define				FILE_BEQWDATE	44
240#define				FILE_NAME	45
241#define				FILE_USE	46
242#define				FILE_CLEAR	47
243#define				FILE_DER	48
244#define				FILE_NAMES_SIZE	49 /* size of array to contain all names */
245
246#define IS_STRING(t) \
247	((t) == FILE_STRING || \
248	 (t) == FILE_PSTRING || \
249	 (t) == FILE_BESTRING16 || \
250	 (t) == FILE_LESTRING16 || \
251	 (t) == FILE_REGEX || \
252	 (t) == FILE_SEARCH || \
253	 (t) == FILE_INDIRECT || \
254	 (t) == FILE_NAME || \
255	 (t) == FILE_USE)
256
257#define FILE_FMT_NONE 0
258#define FILE_FMT_NUM  1 /* "cduxXi" */
259#define FILE_FMT_STR  2 /* "s" */
260#define FILE_FMT_QUAD 3 /* "ll" */
261#define FILE_FMT_FLOAT 4 /* "eEfFgG" */
262#define FILE_FMT_DOUBLE 5 /* "eEfFgG" */
263
264	/* Word 3 */
265	uint8_t in_op;		/* operator for indirection */
266	uint8_t mask_op;	/* operator for mask */
267#ifdef ENABLE_CONDITIONALS
268	uint8_t cond;		/* conditional type */
269#else
270	uint8_t dummy;
271#endif
272	uint8_t factor_op;
273#define		FILE_FACTOR_OP_PLUS	'+'
274#define		FILE_FACTOR_OP_MINUS	'-'
275#define		FILE_FACTOR_OP_TIMES	'*'
276#define		FILE_FACTOR_OP_DIV	'/'
277#define		FILE_FACTOR_OP_NONE	'\0'
278
279#define				FILE_OPS	"&|^+-*/%"
280#define				FILE_OPAND	0
281#define				FILE_OPOR	1
282#define				FILE_OPXOR	2
283#define				FILE_OPADD	3
284#define				FILE_OPMINUS	4
285#define				FILE_OPMULTIPLY	5
286#define				FILE_OPDIVIDE	6
287#define				FILE_OPMODULO	7
288#define				FILE_OPS_MASK	0x07 /* mask for above ops */
289#define				FILE_UNUSED_1	0x08
290#define				FILE_UNUSED_2	0x10
291#define				FILE_OPSIGNED	0x20
292#define				FILE_OPINVERSE	0x40
293#define				FILE_OPINDIRECT	0x80
294
295#ifdef ENABLE_CONDITIONALS
296#define				COND_NONE	0
297#define				COND_IF		1
298#define				COND_ELIF	2
299#define				COND_ELSE	3
300#endif /* ENABLE_CONDITIONALS */
301
302	/* Word 4 */
303	int32_t offset;		/* offset to magic number */
304	/* Word 5 */
305	int32_t in_offset;	/* offset from indirection */
306	/* Word 6 */
307	uint32_t lineno;	/* line number in magic file */
308	/* Word 7,8 */
309	union {
310		uint64_t _mask;	/* for use with numeric and date types */
311		struct {
312			uint32_t _count;	/* repeat/line count */
313			uint32_t _flags;	/* modifier flags */
314		} _s;		/* for use with string types */
315	} _u;
316#define num_mask _u._mask
317#define str_range _u._s._count
318#define str_flags _u._s._flags
319	/* Words 9-24 */
320	union VALUETYPE value;	/* either number or string */
321	/* Words 25-40 */
322	char desc[MAXDESC];	/* description */
323	/* Words 41-60 */
324	char mimetype[MAXMIME]; /* MIME type */
325	/* Words 61-62 */
326	char apple[8];		/* APPLE CREATOR/TYPE */
327	/* Words 63-78 */
328	char ext[64];		/* Popular extensions */
329};
330
331#define BIT(A)   (1 << (A))
332#define STRING_COMPACT_WHITESPACE		BIT(0)
333#define STRING_COMPACT_OPTIONAL_WHITESPACE	BIT(1)
334#define STRING_IGNORE_LOWERCASE			BIT(2)
335#define STRING_IGNORE_UPPERCASE			BIT(3)
336#define REGEX_OFFSET_START			BIT(4)
337#define STRING_TEXTTEST				BIT(5)
338#define STRING_BINTEST				BIT(6)
339#define PSTRING_1_BE				BIT(7)
340#define PSTRING_1_LE				BIT(7)
341#define PSTRING_2_BE				BIT(8)
342#define PSTRING_2_LE				BIT(9)
343#define PSTRING_4_BE				BIT(10)
344#define PSTRING_4_LE				BIT(11)
345#define REGEX_LINE_COUNT			BIT(11)
346#define PSTRING_LEN	\
347    (PSTRING_1_BE|PSTRING_2_LE|PSTRING_2_BE|PSTRING_4_LE|PSTRING_4_BE)
348#define PSTRING_LENGTH_INCLUDES_ITSELF		BIT(12)
349#define	STRING_TRIM				BIT(13)
350#define CHAR_COMPACT_WHITESPACE			'W'
351#define CHAR_COMPACT_OPTIONAL_WHITESPACE	'w'
352#define CHAR_IGNORE_LOWERCASE			'c'
353#define CHAR_IGNORE_UPPERCASE			'C'
354#define CHAR_REGEX_OFFSET_START			's'
355#define CHAR_TEXTTEST				't'
356#define	CHAR_TRIM				'T'
357#define CHAR_BINTEST				'b'
358#define CHAR_PSTRING_1_BE			'B'
359#define CHAR_PSTRING_1_LE			'B'
360#define CHAR_PSTRING_2_BE			'H'
361#define CHAR_PSTRING_2_LE			'h'
362#define CHAR_PSTRING_4_BE			'L'
363#define CHAR_PSTRING_4_LE			'l'
364#define CHAR_PSTRING_LENGTH_INCLUDES_ITSELF     'J'
365#define STRING_IGNORE_CASE		(STRING_IGNORE_LOWERCASE|STRING_IGNORE_UPPERCASE)
366#define STRING_DEFAULT_RANGE		100
367
368#define	INDIRECT_RELATIVE			BIT(0)
369#define	CHAR_INDIRECT_RELATIVE			'r'
370
371/* list of magic entries */
372struct mlist {
373	struct magic *magic;		/* array of magic entries */
374	uint32_t nmagic;		/* number of entries in array */
375	void *map;			/* internal resources used by entry */
376	struct mlist *next, *prev;
377};
378
379#ifdef __cplusplus
380#define CAST(T, b)	static_cast<T>(b)
381#define RCAST(T, b)	reinterpret_cast<T>(b)
382#define CCAST(T, b)	const_cast<T>(b)
383#else
384#define CAST(T, b)	((T)(b))
385#define RCAST(T, b)	((T)(uintptr_t)(b))
386#define CCAST(T, b)	((T)(uintptr_t)(b))
387#endif
388
389struct level_info {
390	int32_t off;
391	int got_match;
392#ifdef ENABLE_CONDITIONALS
393	int last_match;
394	int last_cond;	/* used for error checking by parse() */
395#endif
396};
397
398#define MAGIC_SETS	2
399
400struct magic_set {
401	struct mlist *mlist[MAGIC_SETS];	/* list of regular entries */
402	struct cont {
403		size_t len;
404		struct level_info *li;
405	} c;
406	struct out {
407		char *buf;		/* Accumulation buffer */
408		char *pbuf;		/* Printable buffer */
409	} o;
410	uint32_t offset;		/* a copy of m->offset while we */
411					/* are working on the magic entry */
412	uint32_t eoffset;		/* offset from end of file */
413	int error;
414	int flags;			/* Control magic tests. */
415	int event_flags;		/* Note things that happened. */
416#define 		EVENT_HAD_ERR		0x01
417	const char *file;
418	size_t line;			/* current magic line number */
419	mode_t mode;			/* copy of current stat mode */
420
421	/* data for searches */
422	struct {
423		const char *s;		/* start of search in original source */
424		size_t s_len;		/* length of search region */
425		size_t offset;		/* starting offset in source: XXX - should this be off_t? */
426		size_t rm_len;		/* match length */
427	} search;
428
429	/* FIXME: Make the string dynamically allocated so that e.g.
430	   strings matched in files can be longer than MAXstring */
431	union VALUETYPE ms_value;	/* either number or string */
432	uint16_t indir_max;
433	uint16_t name_max;
434	uint16_t elf_shnum_max;
435	uint16_t elf_phnum_max;
436	uint16_t elf_notes_max;
437	uint16_t regex_max;
438	size_t bytes_max;		/* number of bytes to read from file */
439#define	FILE_INDIR_MAX			50
440#define	FILE_NAME_MAX			30
441#define	FILE_ELF_SHNUM_MAX		32768
442#define	FILE_ELF_PHNUM_MAX		2048
443#define	FILE_ELF_NOTES_MAX		256
444#define	FILE_REGEX_MAX			8192
445};
446
447/* Type for Unicode characters */
448typedef unsigned long unichar;
449
450struct stat;
451#define FILE_T_LOCAL	1
452#define FILE_T_WINDOWS	2
453protected const char *file_fmttime(uint64_t, int, char *);
454protected struct magic_set *file_ms_alloc(int);
455protected void file_ms_free(struct magic_set *);
456protected int file_default(struct magic_set *, size_t);
457protected int file_buffer(struct magic_set *, int, struct stat *, const char *,
458    const void *, size_t);
459protected int file_fsmagic(struct magic_set *, const char *, struct stat *);
460protected int file_pipe2file(struct magic_set *, int, const void *, size_t);
461protected int file_vprintf(struct magic_set *, const char *, va_list)
462    __attribute__((__format__(__printf__, 2, 0)));
463protected int file_separator(struct magic_set *);
464protected size_t file_printedlen(const struct magic_set *);
465protected int file_replace(struct magic_set *, const char *, const char *);
466protected int file_printf(struct magic_set *, const char *, ...)
467    __attribute__((__format__(__printf__, 2, 3)));
468protected int file_reset(struct magic_set *, int);
469protected int file_tryelf(struct magic_set *, const struct buffer *);
470protected int file_trycdf(struct magic_set *, const struct buffer *);
471#if HAVE_FORK
472protected int file_zmagic(struct magic_set *, const struct buffer *,
473    const char *);
474#endif
475protected int file_ascmagic(struct magic_set *, const struct buffer *,
476    int);
477protected int file_ascmagic_with_encoding(struct magic_set *,
478    const struct buffer *, unichar *, size_t, const char *, const char *, int);
479protected int file_encoding(struct magic_set *, const struct buffer *,
480    unichar **, size_t *, const char **, const char **, const char **);
481protected int file_is_json(struct magic_set *, const struct buffer *);
482protected int file_is_csv(struct magic_set *, const struct buffer *, int);
483protected int file_is_tar(struct magic_set *, const struct buffer *);
484protected int file_softmagic(struct magic_set *, const struct buffer *,
485    uint16_t *, uint16_t *, int, int);
486protected int file_apprentice(struct magic_set *, const char *, int);
487protected int buffer_apprentice(struct magic_set *, struct magic **,
488    size_t *, size_t);
489protected int file_magicfind(struct magic_set *, const char *, struct mlist *);
490protected uint64_t file_signextend(struct magic_set *, struct magic *,
491    uint64_t);
492protected void file_badread(struct magic_set *);
493protected void file_badseek(struct magic_set *);
494protected void file_oomem(struct magic_set *, size_t);
495protected void file_error(struct magic_set *, int, const char *, ...)
496    __attribute__((__format__(__printf__, 3, 4)));
497protected void file_magerror(struct magic_set *, const char *, ...)
498    __attribute__((__format__(__printf__, 2, 3)));
499protected void file_magwarn(struct magic_set *, const char *, ...)
500    __attribute__((__format__(__printf__, 2, 3)));
501protected void file_mdump(struct magic *);
502protected void file_showstr(FILE *, const char *, size_t);
503protected size_t file_mbswidth(const char *);
504protected const char *file_getbuffer(struct magic_set *);
505protected ssize_t sread(int, void *, size_t, int);
506protected int file_check_mem(struct magic_set *, unsigned int);
507protected int file_looks_utf8(const unsigned char *, size_t, unichar *,
508    size_t *);
509protected size_t file_pstring_length_size(const struct magic *);
510protected size_t file_pstring_get_length(const struct magic *, const char *);
511protected char * file_printable(char *, size_t, const char *, size_t);
512#ifdef __EMX__
513protected int file_os2_apptype(struct magic_set *, const char *, const void *,
514    size_t);
515#endif /* __EMX__ */
516
517protected void buffer_init(struct buffer *, int, const struct stat *,
518    const void *, size_t);
519protected void buffer_fini(struct buffer *);
520protected int buffer_fill(const struct buffer *);
521
522#include <locale.h>
523#if defined(HAVE_XLOCALE_H)
524#include <xlocale.h>
525#endif
526
527typedef struct {
528	const char *pat;
529#if defined(HAVE_NEWLOCALE) && defined(HAVE_USELOCALE) && defined(HAVE_FREELOCALE)
530#define USE_C_LOCALE
531	locale_t old_lc_ctype;
532	locale_t c_lc_ctype;
533#else
534	char *old_lc_ctype;
535#endif
536	int rc;
537	regex_t rx;
538} file_regex_t;
539
540protected int file_regcomp(file_regex_t *, const char *, int);
541protected int file_regexec(file_regex_t *, const char *, size_t, regmatch_t *,
542    int);
543protected void file_regfree(file_regex_t *);
544protected void file_regerror(file_regex_t *, int, struct magic_set *);
545
546typedef struct {
547	char *buf;
548	uint32_t offset;
549} file_pushbuf_t;
550
551protected file_pushbuf_t *file_push_buffer(struct magic_set *);
552protected char  *file_pop_buffer(struct magic_set *, file_pushbuf_t *);
553
554#ifndef COMPILE_ONLY
555extern const char *file_names[];
556extern const size_t file_nnames;
557#endif
558
559#ifndef HAVE_PREAD
560ssize_t pread(int, void *, size_t, off_t);
561#endif
562#ifndef HAVE_VASPRINTF
563int vasprintf(char **, const char *, va_list);
564#endif
565#ifndef HAVE_ASPRINTF
566int asprintf(char **, const char *, ...);
567#endif
568#ifndef HAVE_DPRINTF
569int dprintf(int, const char *, ...);
570#endif
571
572#ifndef HAVE_STRLCPY
573size_t strlcpy(char *, const char *, size_t);
574#endif
575#ifndef HAVE_STRLCAT
576size_t strlcat(char *, const char *, size_t);
577#endif
578#ifndef HAVE_STRCASESTR
579char *strcasestr(const char *, const char *);
580#endif
581#ifndef HAVE_GETLINE
582ssize_t getline(char **, size_t *, FILE *);
583ssize_t getdelim(char **, size_t *, int, FILE *);
584#endif
585#ifndef HAVE_CTIME_R
586char   *ctime_r(const time_t *, char *);
587#endif
588#ifndef HAVE_ASCTIME_R
589char   *asctime_r(const struct tm *, char *);
590#endif
591#ifndef HAVE_GMTIME_R
592struct tm *gmtime_r(const time_t *, struct tm *);
593#endif
594#ifndef HAVE_LOCALTIME_R
595struct tm *localtime_r(const time_t *, struct tm *);
596#endif
597#ifndef HAVE_FMTCHECK
598const char *fmtcheck(const char *, const char *)
599     __attribute__((__format_arg__(2)));
600#endif
601
602#ifdef HAVE_LIBSECCOMP
603// basic filter
604// this mode should not interfere with normal operations
605// only some dangerous syscalls are blacklisted
606int enable_sandbox_basic(void);
607
608// enhanced filter
609// this mode allows only the necessary syscalls used during normal operation
610// extensive testing required !!!
611int enable_sandbox_full(void);
612#endif
613
614protected const char *file_getprogname(void);
615protected void file_setprogname(const char *);
616protected void file_err(int, const char *, ...)
617    __attribute__((__format__(__printf__, 2, 3), __noreturn__));
618protected void file_errx(int, const char *, ...)
619    __attribute__((__format__(__printf__, 2, 3), __noreturn__));
620protected void file_warn(const char *, ...)
621    __attribute__((__format__(__printf__, 1, 2)));
622protected void file_warnx(const char *, ...)
623    __attribute__((__format__(__printf__, 1, 2)));
624
625#if defined(HAVE_MMAP) && defined(HAVE_SYS_MMAN_H) && !defined(QUICK)
626#define QUICK
627#endif
628
629#ifndef O_BINARY
630#define O_BINARY	0
631#endif
632#ifndef O_NONBLOCK
633#define O_NONBLOCK	0
634#endif
635
636#ifndef __cplusplus
637#if defined(__GNUC__) && (__GNUC__ >= 3)
638#define FILE_RCSID(id) \
639static const char rcsid[] __attribute__((__used__)) = id;
640#else
641#define FILE_RCSID(id) \
642static const char *rcsid(const char *p) { \
643	return rcsid(p = id); \
644}
645#endif
646#else
647#define FILE_RCSID(id)
648#endif
649#ifndef __RCSID
650#define __RCSID(a)
651#endif
652
653#endif /* __file_h__ */
654