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| Current File : //usr/include/stdio.h |
/*-
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Chris Torek.
*
* 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, 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.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* @(#)stdio.h 8.5 (Berkeley) 4/29/95
* $FreeBSD: release/9.1.0/include/stdio.h 235785 2012-05-22 14:40:39Z theraven $
*/
#ifndef _STDIO_H_
#define _STDIO_H_
#include <sys/cdefs.h>
#include <sys/_null.h>
#include <sys/_types.h>
typedef __off_t fpos_t;
#ifndef _SIZE_T_DECLARED
typedef __size_t size_t;
#define _SIZE_T_DECLARED
#endif
#if __BSD_VISIBLE || __POSIX_VISIBLE >= 200809
#ifndef _OFF_T_DECLARED
#define _OFF_T_DECLARED
typedef __off_t off_t;
#endif
#ifndef _SSIZE_T_DECLARED
#define _SSIZE_T_DECLARED
typedef __ssize_t ssize_t;
#endif
#endif
#if __BSD_VISIBLE || __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE
#ifndef _VA_LIST_DECLARED
typedef __va_list va_list;
#define _VA_LIST_DECLARED
#endif
#endif
#define _FSTDIO /* Define for new stdio with functions. */
/*
* NB: to fit things in six character monocase externals, the stdio
* code uses the prefix `__s' for stdio objects, typically followed
* by a three-character attempt at a mnemonic.
*/
/* stdio buffers */
struct __sbuf {
unsigned char *_base;
int _size;
};
/*
* stdio state variables.
*
* The following always hold:
*
* if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR),
* _lbfsize is -_bf._size, else _lbfsize is 0
* if _flags&__SRD, _w is 0
* if _flags&__SWR, _r is 0
*
* This ensures that the getc and putc macros (or inline functions) never
* try to write or read from a file that is in `read' or `write' mode.
* (Moreover, they can, and do, automatically switch from read mode to
* write mode, and back, on "r+" and "w+" files.)
*
* _lbfsize is used only to make the inline line-buffered output stream
* code as compact as possible.
*
* _ub, _up, and _ur are used when ungetc() pushes back more characters
* than fit in the current _bf, or when ungetc() pushes back a character
* that does not match the previous one in _bf. When this happens,
* _ub._base becomes non-nil (i.e., a stream has ungetc() data iff
* _ub._base!=NULL) and _up and _ur save the current values of _p and _r.
*
* Certain members of __sFILE are accessed directly via macros or
* inline functions. To preserve ABI compat, these members must not
* be disturbed. These members are marked below with (*).
*/
struct __sFILE {
unsigned char *_p; /* (*) current position in (some) buffer */
int _r; /* (*) read space left for getc() */
int _w; /* (*) write space left for putc() */
short _flags; /* (*) flags, below; this FILE is free if 0 */
short _file; /* (*) fileno, if Unix descriptor, else -1 */
struct __sbuf _bf; /* (*) the buffer (at least 1 byte, if !NULL) */
int _lbfsize; /* (*) 0 or -_bf._size, for inline putc */
/* operations */
void *_cookie; /* (*) cookie passed to io functions */
int (*_close)(void *);
int (*_read)(void *, char *, int);
fpos_t (*_seek)(void *, fpos_t, int);
int (*_write)(void *, const char *, int);
/* separate buffer for long sequences of ungetc() */
struct __sbuf _ub; /* ungetc buffer */
unsigned char *_up; /* saved _p when _p is doing ungetc data */
int _ur; /* saved _r when _r is counting ungetc data */
/* tricks to meet minimum requirements even when malloc() fails */
unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */
unsigned char _nbuf[1]; /* guarantee a getc() buffer */
/* separate buffer for fgetln() when line crosses buffer boundary */
struct __sbuf _lb; /* buffer for fgetln() */
/* Unix stdio files get aligned to block boundaries on fseek() */
int _blksize; /* stat.st_blksize (may be != _bf._size) */
fpos_t _offset; /* current lseek offset */
struct pthread_mutex *_fl_mutex; /* used for MT-safety */
struct pthread *_fl_owner; /* current owner */
int _fl_count; /* recursive lock count */
int _orientation; /* orientation for fwide() */
__mbstate_t _mbstate; /* multibyte conversion state */
};
#ifndef _STDFILE_DECLARED
#define _STDFILE_DECLARED
typedef struct __sFILE FILE;
#endif
#ifndef _STDSTREAM_DECLARED
__BEGIN_DECLS
extern FILE *__stdinp;
extern FILE *__stdoutp;
extern FILE *__stderrp;
__END_DECLS
#define _STDSTREAM_DECLARED
#endif
#define __SLBF 0x0001 /* line buffered */
#define __SNBF 0x0002 /* unbuffered */
#define __SRD 0x0004 /* OK to read */
#define __SWR 0x0008 /* OK to write */
/* RD and WR are never simultaneously asserted */
#define __SRW 0x0010 /* open for reading & writing */
#define __SEOF 0x0020 /* found EOF */
#define __SERR 0x0040 /* found error */
#define __SMBF 0x0080 /* _buf is from malloc */
#define __SAPP 0x0100 /* fdopen()ed in append mode */
#define __SSTR 0x0200 /* this is an sprintf/snprintf string */
#define __SOPT 0x0400 /* do fseek() optimization */
#define __SNPT 0x0800 /* do not do fseek() optimization */
#define __SOFF 0x1000 /* set iff _offset is in fact correct */
#define __SMOD 0x2000 /* true => fgetln modified _p text */
#define __SALC 0x4000 /* allocate string space dynamically */
#define __SIGN 0x8000 /* ignore this file in _fwalk */
/*
* The following three definitions are for ANSI C, which took them
* from System V, which brilliantly took internal interface macros and
* made them official arguments to setvbuf(), without renaming them.
* Hence, these ugly _IOxxx names are *supposed* to appear in user code.
*
* Although numbered as their counterparts above, the implementation
* does not rely on this.
*/
#define _IOFBF 0 /* setvbuf should set fully buffered */
#define _IOLBF 1 /* setvbuf should set line buffered */
#define _IONBF 2 /* setvbuf should set unbuffered */
#define BUFSIZ 1024 /* size of buffer used by setbuf */
#define EOF (-1)
/*
* FOPEN_MAX is a minimum maximum, and is the number of streams that
* stdio can provide without attempting to allocate further resources
* (which could fail). Do not use this for anything.
*/
/* must be == _POSIX_STREAM_MAX <limits.h> */
#ifndef FOPEN_MAX
#define FOPEN_MAX 20 /* must be <= OPEN_MAX <sys/syslimits.h> */
#endif
#define FILENAME_MAX 1024 /* must be <= PATH_MAX <sys/syslimits.h> */
/* System V/ANSI C; this is the wrong way to do this, do *not* use these. */
#if __XSI_VISIBLE
#define P_tmpdir "/tmp/"
#endif
#define L_tmpnam 1024 /* XXX must be == PATH_MAX */
#define TMP_MAX 308915776
#ifndef SEEK_SET
#define SEEK_SET 0 /* set file offset to offset */
#endif
#ifndef SEEK_CUR
#define SEEK_CUR 1 /* set file offset to current plus offset */
#endif
#ifndef SEEK_END
#define SEEK_END 2 /* set file offset to EOF plus offset */
#endif
#define stdin __stdinp
#define stdout __stdoutp
#define stderr __stderrp
__BEGIN_DECLS
#ifdef _XLOCALE_H_
#include <xlocale/_stdio.h>
#endif
/*
* Functions defined in ANSI C standard.
*/
void clearerr(FILE *);
int fclose(FILE *);
int feof(FILE *);
int ferror(FILE *);
int fflush(FILE *);
int fgetc(FILE *);
int fgetpos(FILE * __restrict, fpos_t * __restrict);
char *fgets(char * __restrict, int, FILE * __restrict);
FILE *fopen(const char * __restrict, const char * __restrict);
int fprintf(FILE * __restrict, const char * __restrict, ...);
int fputc(int, FILE *);
int fputs(const char * __restrict, FILE * __restrict);
size_t fread(void * __restrict, size_t, size_t, FILE * __restrict);
FILE *freopen(const char * __restrict, const char * __restrict, FILE * __restrict);
int fscanf(FILE * __restrict, const char * __restrict, ...);
int fseek(FILE *, long, int);
int fsetpos(FILE *, const fpos_t *);
long ftell(FILE *);
size_t fwrite(const void * __restrict, size_t, size_t, FILE * __restrict);
int getc(FILE *);
int getchar(void);
char *gets(char *);
void perror(const char *);
int printf(const char * __restrict, ...);
int putc(int, FILE *);
int putchar(int);
int puts(const char *);
int remove(const char *);
int rename(const char *, const char *);
void rewind(FILE *);
int scanf(const char * __restrict, ...);
void setbuf(FILE * __restrict, char * __restrict);
int setvbuf(FILE * __restrict, char * __restrict, int, size_t);
int sprintf(char * __restrict, const char * __restrict, ...);
int sscanf(const char * __restrict, const char * __restrict, ...);
FILE *tmpfile(void);
char *tmpnam(char *);
int ungetc(int, FILE *);
int vfprintf(FILE * __restrict, const char * __restrict,
__va_list);
int vprintf(const char * __restrict, __va_list);
int vsprintf(char * __restrict, const char * __restrict,
__va_list);
#if __ISO_C_VISIBLE >= 1999
int snprintf(char * __restrict, size_t, const char * __restrict,
...) __printflike(3, 4);
int vfscanf(FILE * __restrict, const char * __restrict, __va_list)
__scanflike(2, 0);
int vscanf(const char * __restrict, __va_list) __scanflike(1, 0);
int vsnprintf(char * __restrict, size_t, const char * __restrict,
__va_list) __printflike(3, 0);
int vsscanf(const char * __restrict, const char * __restrict, __va_list)
__scanflike(2, 0);
#endif
/*
* Functions defined in all versions of POSIX 1003.1.
*/
#if __BSD_VISIBLE || __POSIX_VISIBLE <= 199506
#define L_cuserid 17 /* size for cuserid(3); MAXLOGNAME, legacy */
#endif
#if __POSIX_VISIBLE
#define L_ctermid 1024 /* size for ctermid(3); PATH_MAX */
char *ctermid(char *);
FILE *fdopen(int, const char *);
int fileno(FILE *);
#endif /* __POSIX_VISIBLE */
#if __POSIX_VISIBLE >= 199209
int pclose(FILE *);
FILE *popen(const char *, const char *);
#endif
#if __POSIX_VISIBLE >= 199506
int ftrylockfile(FILE *);
void flockfile(FILE *);
void funlockfile(FILE *);
/*
* These are normally used through macros as defined below, but POSIX
* requires functions as well.
*/
int getc_unlocked(FILE *);
int getchar_unlocked(void);
int putc_unlocked(int, FILE *);
int putchar_unlocked(int);
#endif
#if __BSD_VISIBLE
void clearerr_unlocked(FILE *);
int feof_unlocked(FILE *);
int ferror_unlocked(FILE *);
int fileno_unlocked(FILE *);
#endif
#if __POSIX_VISIBLE >= 200112
int fseeko(FILE *, __off_t, int);
__off_t ftello(FILE *);
#endif
#if __BSD_VISIBLE || __XSI_VISIBLE > 0 && __XSI_VISIBLE < 600
int getw(FILE *);
int putw(int, FILE *);
#endif /* BSD or X/Open before issue 6 */
#if __XSI_VISIBLE
char *tempnam(const char *, const char *);
#endif
#if __BSD_VISIBLE || __POSIX_VISIBLE >= 200809
ssize_t getdelim(char ** __restrict, size_t * __restrict, int,
FILE * __restrict);
int renameat(int, const char *, int, const char *);
int vdprintf(int, const char * __restrict, __va_list);
/*
* Every programmer and his dog wrote functions called getline() and dprintf()
* before POSIX.1-2008 came along and decided to usurp the names, so we
* don't prototype them by default unless one of the following is true:
* a) the app has requested them specifically by defining _WITH_GETLINE or
* _WITH_DPRINTF, respectively
* b) the app has requested a POSIX.1-2008 environment via _POSIX_C_SOURCE
* c) the app defines a GNUism such as _BSD_SOURCE or _GNU_SOURCE
*/
#ifndef _WITH_GETLINE
#if defined(_BSD_SOURCE) || defined(_GNU_SOURCE)
#define _WITH_GETLINE
#elif defined(_POSIX_C_SOURCE)
#if _POSIX_C_SOURCE >= 200809
#define _WITH_GETLINE
#endif
#endif
#endif
#ifdef _WITH_GETLINE
ssize_t getline(char ** __restrict, size_t * __restrict, FILE * __restrict);
#endif
#ifndef _WITH_DPRINTF
#if defined(_BSD_SOURCE) || defined(_GNU_SOURCE)
#define _WITH_DPRINTF
#elif defined(_POSIX_C_SOURCE)
#if _POSIX_C_SOURCE >= 200809
#define _WITH_DPRINTF
#endif
#endif
#endif
#ifdef _WITH_DPRINTF
int (dprintf)(int, const char * __restrict, ...);
#endif
#endif /* __BSD_VISIBLE || __POSIX_VISIBLE >= 200809 */
/*
* Routines that are purely local.
*/
#if __BSD_VISIBLE
int asprintf(char **, const char *, ...) __printflike(2, 3);
char *ctermid_r(char *);
void fcloseall(void);
char *fgetln(FILE *, size_t *);
const char *fmtcheck(const char *, const char *) __format_arg(2);
int fpurge(FILE *);
void setbuffer(FILE *, char *, int);
int setlinebuf(FILE *);
int vasprintf(char **, const char *, __va_list)
__printflike(2, 0);
/*
* The system error table contains messages for the first sys_nerr
* positive errno values. Use strerror() or strerror_r() from <string.h>
* instead.
*/
extern __const int sys_nerr;
extern __const char *__const sys_errlist[];
/*
* Stdio function-access interface.
*/
FILE *funopen(const void *,
int (*)(void *, char *, int),
int (*)(void *, const char *, int),
fpos_t (*)(void *, fpos_t, int),
int (*)(void *));
#define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0)
#define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0)
/*
* Portability hacks. See <sys/types.h>.
*/
#ifndef _FTRUNCATE_DECLARED
#define _FTRUNCATE_DECLARED
int ftruncate(int, __off_t);
#endif
#ifndef _LSEEK_DECLARED
#define _LSEEK_DECLARED
__off_t lseek(int, __off_t, int);
#endif
#ifndef _MMAP_DECLARED
#define _MMAP_DECLARED
void *mmap(void *, size_t, int, int, int, __off_t);
#endif
#ifndef _TRUNCATE_DECLARED
#define _TRUNCATE_DECLARED
int truncate(const char *, __off_t);
#endif
#endif /* __BSD_VISIBLE */
/*
* Functions internal to the implementation.
*/
int __srget(FILE *);
int __swbuf(int, FILE *);
/*
* The __sfoo macros are here so that we can
* define function versions in the C library.
*/
#define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
#if defined(__GNUC__) && defined(__STDC__)
static __inline int __sputc(int _c, FILE *_p) {
if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n'))
return (*_p->_p++ = _c);
else
return (__swbuf(_c, _p));
}
#else
/*
* This has been tuned to generate reasonable code on the vax using pcc.
*/
#define __sputc(c, p) \
(--(p)->_w < 0 ? \
(p)->_w >= (p)->_lbfsize ? \
(*(p)->_p = (c)), *(p)->_p != '\n' ? \
(int)*(p)->_p++ : \
__swbuf('\n', p) : \
__swbuf((int)(c), p) : \
(*(p)->_p = (c), (int)*(p)->_p++))
#endif
extern int __isthreaded;
#ifndef __cplusplus
#define __sfeof(p) (((p)->_flags & __SEOF) != 0)
#define __sferror(p) (((p)->_flags & __SERR) != 0)
#define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF)))
#define __sfileno(p) ((p)->_file)
#define feof(p) (!__isthreaded ? __sfeof(p) : (feof)(p))
#define ferror(p) (!__isthreaded ? __sferror(p) : (ferror)(p))
#define clearerr(p) (!__isthreaded ? __sclearerr(p) : (clearerr)(p))
#if __POSIX_VISIBLE
#define fileno(p) (!__isthreaded ? __sfileno(p) : (fileno)(p))
#endif
#define getc(fp) (!__isthreaded ? __sgetc(fp) : (getc)(fp))
#define putc(x, fp) (!__isthreaded ? __sputc(x, fp) : (putc)(x, fp))
#define getchar() getc(stdin)
#define putchar(x) putc(x, stdout)
#if __BSD_VISIBLE
/*
* See ISO/IEC 9945-1 ANSI/IEEE Std 1003.1 Second Edition 1996-07-12
* B.8.2.7 for the rationale behind the *_unlocked() macros.
*/
#define feof_unlocked(p) __sfeof(p)
#define ferror_unlocked(p) __sferror(p)
#define clearerr_unlocked(p) __sclearerr(p)
#define fileno_unlocked(p) __sfileno(p)
#endif
#if __POSIX_VISIBLE >= 199506
#define getc_unlocked(fp) __sgetc(fp)
#define putc_unlocked(x, fp) __sputc(x, fp)
#define getchar_unlocked() getc_unlocked(stdin)
#define putchar_unlocked(x) putc_unlocked(x, stdout)
#endif
#endif /* __cplusplus */
__END_DECLS
#endif /* !_STDIO_H_ */