eef3b2f04b
qualifier to function prototypes and definitions where appropriate using the '__restrict' macro. - Update the manual page.
438 lines
14 KiB
C
438 lines
14 KiB
C
/*-
|
|
* 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. 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
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _STDIO_H_
|
|
#define _STDIO_H_
|
|
|
|
#include <sys/cdefs.h>
|
|
#include <machine/ansi.h>
|
|
|
|
#ifdef _BSD_SIZE_T_
|
|
typedef _BSD_SIZE_T_ size_t;
|
|
#undef _BSD_SIZE_T_
|
|
#endif
|
|
|
|
#ifndef NULL
|
|
#define NULL 0
|
|
#endif
|
|
|
|
typedef _BSD_OFF_T_ fpos_t;
|
|
|
|
#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;
|
|
};
|
|
|
|
/* hold a buncha junk that would grow the ABI */
|
|
struct __sFILEX;
|
|
|
|
/*
|
|
* 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.
|
|
*
|
|
* NB: see WARNING above before changing the layout of this structure!
|
|
*/
|
|
typedef 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 */
|
|
struct __sFILEX *_extra; /* additions to FILE to not break ABI */
|
|
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 (see WARNING) */
|
|
} FILE;
|
|
|
|
__BEGIN_DECLS
|
|
extern FILE __sF[];
|
|
extern FILE *__stdinp;
|
|
extern FILE *__stdoutp;
|
|
extern FILE *__stderrp;
|
|
__END_DECLS
|
|
|
|
#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> */
|
|
#define FOPEN_MAX 20 /* must be <= OPEN_MAX <sys/syslimits.h> */
|
|
#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 "/var/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
|
|
|
|
/* To be removed by 5.0-RELEASE */
|
|
#if (defined(__i386__) || defined(__alpha__)) && defined(_OLD_STDIO)
|
|
#define stdin (&__sF[0])
|
|
#define stdout (&__sF[1])
|
|
#define stderr (&__sF[2])
|
|
#else
|
|
#define stdin __stdinp
|
|
#define stdout __stdoutp
|
|
#define stderr __stderrp
|
|
#endif
|
|
|
|
__BEGIN_DECLS
|
|
/*
|
|
* 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 *, fpos_t *);
|
|
char *fgets(char *, int, FILE *);
|
|
FILE *fopen(const char *, const char *);
|
|
int fprintf(FILE *__restrict, const char *__restrict, ...);
|
|
int fputc(int, FILE *);
|
|
int fputs(const char *, FILE *);
|
|
size_t fread(void *, size_t, size_t, FILE *);
|
|
FILE *freopen(const char *, const char *, FILE *);
|
|
int fscanf(FILE *, const char *, ...);
|
|
int fseek(FILE *, long, int);
|
|
int fsetpos(FILE *, const fpos_t *);
|
|
long ftell(FILE *);
|
|
size_t fwrite(const void *, size_t, size_t, FILE *);
|
|
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 *, ...);
|
|
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 *, const char *, ...);
|
|
FILE *tmpfile(void);
|
|
char *tmpnam(char *);
|
|
int ungetc(int, FILE *);
|
|
int vfprintf(FILE *__restrict, const char *__restrict,
|
|
_BSD_VA_LIST_);
|
|
int vprintf(const char *__restrict, _BSD_VA_LIST_);
|
|
int vsprintf(char *__restrict, const char *__restrict,
|
|
_BSD_VA_LIST_);
|
|
|
|
#if __ISO_C_VISIBLE >= 1999
|
|
int snprintf(char *__restrict, size_t, const char *__restrict,
|
|
...) __printflike(3, 4);
|
|
int vsnprintf(char *__restrict, size_t, const char *__restrict,
|
|
_BSD_VA_LIST_) __printflike(3, 0);
|
|
#endif
|
|
|
|
/*
|
|
* Functions defined in all versions of POSIX 1003.1.
|
|
*/
|
|
#if __POSIX_VISIBLE
|
|
/* size for cuserid(3); UT_NAMESIZE + 1, see <utmp.h> */
|
|
#define L_cuserid 17
|
|
|
|
#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 __POSIX_VISIBLE >= 200112
|
|
int fseeko(FILE *, _BSD_OFF_T_, int);
|
|
_BSD_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
|
|
|
|
/*
|
|
* Routines that are purely local.
|
|
*/
|
|
#if __BSD_VISIBLE
|
|
int asprintf(char **, const char *, ...) __printflike(2, 3);
|
|
char *ctermid_r(char *);
|
|
char *fgetln(FILE *, size_t *);
|
|
#if __GNUC__ == 2 && __GNUC_MINOR__ >= 7 || __GNUC__ >= 3
|
|
#define __ATTR_FORMAT_ARG __attribute__((__format_arg__(2)))
|
|
#else
|
|
#define __ATTR_FORMAT_ARG
|
|
#endif
|
|
__const char *fmtcheck(const char *, const char *) __ATTR_FORMAT_ARG;
|
|
int fpurge(FILE *);
|
|
void setbuffer(FILE *, char *, int);
|
|
int setlinebuf(FILE *);
|
|
int vasprintf(char **, const char *, _BSD_VA_LIST_)
|
|
__printflike(2, 0);
|
|
int vscanf(const char *, _BSD_VA_LIST_) __scanflike(1, 0);
|
|
int vsscanf(const char *, const char *, _BSD_VA_LIST_)
|
|
__scanflike(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[];
|
|
|
|
/*
|
|
* This is a #define because the function is used internally and
|
|
* (unlike vfscanf) the name __vfscanf is guaranteed not to collide
|
|
* with a user function when _ANSI_SOURCE or _POSIX_SOURCE is defined.
|
|
*/
|
|
#define vfscanf __vfscanf
|
|
|
|
/*
|
|
* 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, _BSD_OFF_T_);
|
|
#endif
|
|
#ifndef _LSEEK_DECLARED
|
|
#define _LSEEK_DECLARED
|
|
_BSD_OFF_T_ lseek(int, _BSD_OFF_T_, int);
|
|
#endif
|
|
#ifndef _MMAP_DECLARED
|
|
#define _MMAP_DECLARED
|
|
void *mmap(void *, size_t, int, int, int, _BSD_OFF_T_);
|
|
#endif
|
|
#ifndef _TRUNCATE_DECLARED
|
|
#define _TRUNCATE_DECLARED
|
|
int truncate(const char *, _BSD_OFF_T_);
|
|
#endif
|
|
#endif /* __BSD_VISIBLE */
|
|
|
|
/*
|
|
* Functions internal to the implementation.
|
|
*/
|
|
int __srget(FILE *);
|
|
int __vfscanf(FILE *, const char *, _BSD_VA_LIST_);
|
|
int __svfscanf(FILE *, const char *, _BSD_VA_LIST_);
|
|
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
|
|
|
|
#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)
|
|
|
|
/*
|
|
* 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)
|
|
#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)
|
|
|
|
__END_DECLS
|
|
#endif /* !_STDIO_H_ */
|