2 * Copyright (c) 1990, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * @(#)stdio.h 8.5 (Berkeley) 4/29/95
33 * $FreeBSD: src/include/stdio.h,v 1.78 2009/03/25 08:07:52 das Exp $
39 #include <sys/cdefs.h>
40 #include <sys/_null.h>
41 #include <sys/types.h>
42 #include <machine/stdarg.h> /* for __va_list */
44 typedef __off_t
fpos_t;
46 #ifndef _SIZE_T_DECLARED
47 typedef __size_t
size_t;
48 #define _SIZE_T_DECLARED
51 #if __POSIX_VISIBLE >= 200809
52 #ifndef _OFF_T_DECLARED
53 #define _OFF_T_DECLARED
54 typedef __off_t off_t
;
56 #ifndef _SSIZE_T_DECLARED
57 #define _SSIZE_T_DECLARED
58 typedef __ssize_t ssize_t
;
62 #if __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE
64 #ifndef _VA_LIST_DECLARED
65 #define _VA_LIST_DECLARED
66 typedef __va_list
va_list;
67 /* __gnuc_va_list is not needed, provided by <machine/stdarg.h> */
74 #define _FSTDIO /* Define for new stdio with functions. */
77 * stdio state variables.
79 * The following always hold:
81 * if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR),
82 * _lbfsize is -_bf._size, else _lbfsize is 0
83 * if _flags&__SRD, _w is 0
84 * if _flags&__SWR, _r is 0
86 * This ensures that the getc and putc macros (or inline functions) never
87 * try to write or read from a file that is in `read' or `write' mode.
88 * (Moreover, they can, and do, automatically switch from read mode to
89 * write mode, and back, on "r+" and "w+" files.)
91 * _lbfsize is used only to make the inline line-buffered output stream
92 * code as compact as possible.
94 * WARNING: Do not change the order of the fields in __FILE_public!
96 #ifndef _STDFILE_DECLARED
97 #define _STDFILE_DECLARED
98 typedef struct __FILE
FILE;
101 struct __FILE_public
{
102 unsigned char *_p
; /* current position in (some) buffer */
103 int _flags
; /* flags, below; this FILE is free if 0 */
104 int _fileno
; /* fileno, if Unix descriptor, else -1 */
105 __ssize_t _r
; /* read space left for getc() */
106 __ssize_t _w
; /* write space left for putc() */
107 __ssize_t _lbfsize
; /* 0 or -_bf._size, for inline putc */
110 #ifndef _STDSTREAM_DECLARED
112 extern FILE *__stdinp
;
113 extern FILE *__stdoutp
;
114 extern FILE *__stderrp
;
116 #define _STDSTREAM_DECLARED
119 #define __SLBF 0x0001 /* line buffered */
120 #define __SNBF 0x0002 /* unbuffered */
121 #define __SRD 0x0004 /* OK to read */
122 #define __SWR 0x0008 /* OK to write */
123 /* RD and WR are never simultaneously asserted */
124 #define __SRW 0x0010 /* open for reading & writing */
125 #define __SEOF 0x0020 /* found EOF */
126 #define __SERR 0x0040 /* found error */
127 #define __SMBF 0x0080 /* _buf is from malloc */
128 #define __SAPP 0x0100 /* fdopen()ed in append mode */
129 #define __SSTR 0x0200 /* this is an sprintf/snprintf string */
130 #define __SOPT 0x0400 /* do fseek() optimization */
131 #define __SNPT 0x0800 /* do not do fseek() optimization */
132 #define __SOFF 0x1000 /* set iff _offset is in fact correct */
133 #define __SMOD 0x2000 /* true => fgetln modified _p text */
134 #define __SALC 0x4000 /* allocate string space dynamically */
135 #define __SIGN 0x8000 /* ignore this file in _fwalk */
138 * The following three definitions are for ANSI C, which took them
139 * from System V, which brilliantly took internal interface macros and
140 * made them official arguments to setvbuf(), without renaming them.
141 * Hence, these ugly _IOxxx names are *supposed* to appear in user code.
143 * Although numbered as their counterparts above, the implementation
144 * does not rely on this.
146 #define _IOFBF 0 /* setvbuf should set fully buffered */
147 #define _IOLBF 1 /* setvbuf should set line buffered */
148 #define _IONBF 2 /* setvbuf should set unbuffered */
150 #define BUFSIZ 1024 /* size of buffer used by setbuf */
154 * FOPEN_MAX is a minimum maximum, and is the number of streams that
155 * stdio can provide without attempting to allocate further resources
156 * (which could fail). Do not use this for anything.
158 /* must be == _POSIX_STREAM_MAX <limits.h> */
160 #define FOPEN_MAX 20 /* must be <= OPEN_MAX <sys/syslimits.h> */
162 #define FILENAME_MAX 1024 /* must be <= PATH_MAX <sys/syslimits.h> */
164 /* System V/ANSI C; this is the wrong way to do this, do *not* use these. */
166 #define P_tmpdir "/tmp/"
168 #define L_tmpnam 1024 /* XXX must be == PATH_MAX */
169 #define TMP_MAX 308915776
172 #define SEEK_SET 0 /* set file offset to offset */
175 #define SEEK_CUR 1 /* set file offset to current plus offset */
178 #define SEEK_END 2 /* set file offset to EOF plus offset */
181 #define stdin __stdinp
182 #define stdout __stdoutp
183 #define stderr __stderrp
187 * Functions defined in ANSI C standard.
189 void clearerr(FILE *);
195 int fgetpos(FILE * __restrict
, fpos_t * __restrict
);
196 char *fgets(char * __restrict
, int, FILE * __restrict
);
197 FILE *fopen(const char * __restrict
, const char * __restrict
);
198 int fprintf(FILE * __restrict
, const char * __restrict
, ...);
199 int fputc(int, FILE *);
200 int fputs(const char * __restrict
, FILE * __restrict
);
201 size_t fread(void * __restrict
, size_t, size_t, FILE * __restrict
);
202 FILE *freopen(const char * __restrict
, const char * __restrict
,
204 int fscanf(FILE * __restrict
, const char * __restrict
, ...);
205 int fseek(FILE *, long, int);
206 int fsetpos(FILE *, const fpos_t *);
208 size_t fwrite(const void * __restrict
, size_t, size_t, FILE * __restrict
);
212 void perror(const char *);
213 int printf(const char * __restrict
, ...);
214 int putc(int, FILE *);
216 int puts(const char *);
217 int remove(const char *);
218 int rename(const char *, const char *);
220 int scanf(const char * __restrict
, ...);
221 void setbuf(FILE * __restrict
, char * __restrict
);
222 int setvbuf(FILE * __restrict
, char * __restrict
, int, size_t);
223 int sprintf(char * __restrict
, const char * __restrict
, ...);
224 int sscanf(const char * __restrict
, const char * __restrict
, ...);
226 char *tmpnam(char *);
227 int ungetc(int, FILE *);
228 int vfprintf(FILE * __restrict
, const char * __restrict
, __va_list
);
229 int vprintf(const char * __restrict
, __va_list
);
230 int vsprintf(char * __restrict
, const char * __restrict
, __va_list
);
232 #if __ISO_C_VISIBLE >= 1999 || __XSI_VISIBLE >= 500
233 int snprintf(char * __restrict
, size_t, const char * __restrict
, ...)
235 int vsnprintf(char * __restrict
, size_t, const char * __restrict
,
236 __va_list
) __printflike(3, 0);
238 #if __ISO_C_VISIBLE >= 1999
239 int vfscanf(FILE * __restrict
, const char * __restrict
, __va_list
)
241 int vscanf(const char * __restrict
, __va_list
) __scanflike(1, 0);
242 int vsscanf(const char * __restrict
, const char * __restrict
, __va_list
)
247 * Functions defined in all versions of POSIX 1003.1.
249 #if __BSD_VISIBLE || __POSIX_VISIBLE <= 199506
250 #define L_cuserid 17 /* size for cuserid(3); MAXLOGNAME, legacy */
254 #define L_ctermid 1024 /* size for ctermid(3); PATH_MAX */
256 char *ctermid(char *);
257 FILE *fdopen(int, const char *);
259 #endif /* __POSIX_VISIBLE */
261 #if __POSIX_VISIBLE >= 199209
263 FILE *popen(const char *, const char *);
266 #if __POSIX_VISIBLE >= 199506
267 int ftrylockfile(FILE *);
268 void flockfile(FILE *);
269 void funlockfile(FILE *);
272 * These are normally used through macros as defined below, but POSIX
273 * requires functions as well.
275 int getc_unlocked(FILE *);
276 int getchar_unlocked(void);
277 int putc_unlocked(int, FILE *);
278 int putchar_unlocked(int);
281 void clearerr_unlocked(FILE *);
282 int feof_unlocked(FILE *);
283 int ferror_unlocked(FILE *);
284 int fileno_unlocked(FILE *);
287 #if __POSIX_VISIBLE >= 200112
288 int fseeko(FILE *, __off_t
, int);
289 __off_t
ftello(FILE *);
292 #if __BSD_VISIBLE || __XSI_VISIBLE > 0 && __XSI_VISIBLE < 600
294 int putw(int, FILE *);
295 #endif /* BSD or X/Open before issue 6 */
298 char *tempnam(const char *, const char *);
301 #if __POSIX_VISIBLE >= 200809
302 FILE *fmemopen(void *__restrict
, size_t, const char *__restrict
);
303 ssize_t
getdelim(char ** __restrict
, size_t * __restrict
, int,
305 FILE *open_memstream(char **, size_t *);
306 int renameat(int, const char *, int, const char *);
307 int vdprintf(int, const char * __restrict
, __va_list
) __printflike(2, 0);
308 int dprintf(int, const char * __restrict
, ...) __printflike(2, 3);
309 ssize_t
getline(char ** __restrict
, size_t * __restrict
, FILE * __restrict
);
310 #endif /* __POSIX_VISIBLE >= 200809 */
313 * Routines that are purely local.
316 int asprintf(char **, const char *, ...) __printflike(2, 3);
317 char *ctermid_r(char *);
318 void fcloseall(void);
319 void *fcookie(FILE *);
320 char *fgetln(FILE *, size_t *);
321 const char *fmtcheck(const char *, const char *) __format_arg(2);
322 __ssize_t
__fpending(const FILE *);
324 void setbuffer(FILE *, char *, int);
325 int setlinebuf(FILE *);
326 int vasprintf(char **, const char *, __va_list
) __printflike(2, 0);
329 * The system error table contains messages for the first sys_nerr
330 * positive errno values. Use strerror() or strerror_r() from <string.h>
333 extern const int sys_nerr
;
334 extern const char *const sys_errlist
[];
337 * Stdio function-access interface.
339 FILE *funopen(const void *, int (*)(void *, char *, int),
340 int (*)(void *, const char *, int),
341 fpos_t (*)(void *, fpos_t, int), int (*)(void *));
342 #define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0)
343 #define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0)
346 * Portability hacks. See <sys/types.h>.
348 #ifndef _FTRUNCATE_DECLARED
349 #define _FTRUNCATE_DECLARED
350 int ftruncate(int, __off_t
);
352 #ifndef _LSEEK_DECLARED
353 #define _LSEEK_DECLARED
354 __off_t
lseek(int, __off_t
, int);
356 #ifndef _MMAP_DECLARED
357 #define _MMAP_DECLARED
358 void *mmap(void *, size_t, int, int, int, __off_t
);
360 #ifndef _TRUNCATE_DECLARED
361 #define _TRUNCATE_DECLARED
362 int truncate(const char *, __off_t
);
364 #endif /* __BSD_VISIBLE */
367 * Functions internal to the implementation.
370 int __swbuf(int, FILE *);
373 * The __sfoo functions are here so that we can
374 * define real function versions in the C library.
379 struct __FILE_public
*_p
= (struct __FILE_public
*)_fp
;
382 return (__srget(_fp
));
388 __sputc(int _c
, FILE *_fp
)
390 struct __FILE_public
*_p
= (struct __FILE_public
*)_fp
;
392 if (--_p
->_w
>= 0 || (_p
->_w
>= _p
->_lbfsize
&& _c
!= '\n'))
393 return (*_p
->_p
++ = _c
);
395 return (__swbuf(_c
, _fp
));
401 struct __FILE_public
*_p
= (struct __FILE_public
*)_fp
;
403 return ((_p
->_flags
& __SEOF
) != 0);
409 struct __FILE_public
*_p
= (struct __FILE_public
*)_fp
;
411 return ((_p
->_flags
& __SERR
) != 0);
415 __sclearerr(FILE *_fp
)
417 struct __FILE_public
*_p
= (struct __FILE_public
*)_fp
;
419 _p
->_flags
&= ~(__SERR
|__SEOF
);
425 struct __FILE_public
*_p
= (struct __FILE_public
*)_fp
;
427 return (_p
->_fileno
);
430 extern int __isthreaded
;
433 #define feof(p) (!__isthreaded ? __sfeof(p) : (feof)(p))
434 #define ferror(p) (!__isthreaded ? __sferror(p) : (ferror)(p))
435 #define clearerr(p) (!__isthreaded ? __sclearerr(p) : (clearerr)(p))
438 #define fileno(p) (!__isthreaded ? __sfileno(p) : (fileno)(p))
441 #define getc(fp) (!__isthreaded ? __sgetc(fp) : (getc)(fp))
442 #define putc(x, fp) (!__isthreaded ? __sputc(x, fp) : (putc)(x, fp))
444 #define getchar() getc(stdin)
445 #define putchar(x) putc(x, stdout)
449 * See ISO/IEC 9945-1 ANSI/IEEE Std 1003.1 Second Edition 1996-07-12
450 * B.8.2.7 for the rationale behind the *_unlocked() macros.
452 #define feof_unlocked(p) __sfeof(p)
453 #define ferror_unlocked(p) __sferror(p)
454 #define clearerr_unlocked(p) __sclearerr(p)
455 #define fileno_unlocked(p) __sfileno(p)
457 #if __POSIX_VISIBLE >= 199506
458 #define getc_unlocked(fp) __sgetc(fp)
459 #define putc_unlocked(x, fp) __sputc(x, fp)
461 #define getchar_unlocked() getc_unlocked(stdin)
462 #define putchar_unlocked(x) putc_unlocked(x, stdout)
464 #endif /* __cplusplus */
467 #endif /* !_STDIO_H_ */