[unix-history] / usr / src / include / stdio.h

/*-
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Chris Torek.
 *
 * %sccs.include.redist.c%
 *
 *	@(#)stdio.h	5.26 (Berkeley) %G%
 */

#ifndef	_STDIO_H_
#define	_STDIO_H_

#if !defined(_ANSI_SOURCE) && !defined(__STRICT_ANSI__)
#include <sys/types.h>
#endif

#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

/*
 * This is fairly grotesque, but pure ANSI code must not inspect the
 * innards of an fpos_t anyway.  The library internally uses off_t,
 * which we assume is exactly as big as eight chars.  (When we switch
 * to gcc 2.4 we will use __attribute__ here.)
 *
 * WARNING: the alignment constraints on an off_t and the struct below
 * differ on (e.g.) the SPARC.  Hence, the placement of an fpos_t object
 * in a structure will change if fpos_t's are not aligned on 8-byte
 * boundaries.  THIS IS A CROCK, but for now there is no way around it.
 */
#if !defined(_ANSI_SOURCE) && !defined(__STRICT_ANSI__)
typedef off_t fpos_t;
#else
typedef struct __sfpos {
	char	_pos[8];
} fpos_t;
#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.
 *
 * 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) __P((void *));
	int	(*_read)  __P((void *, char *, int));
	fpos_t	(*_seek)  __P((void *, fpos_t, int));
	int	(*_write) __P((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 fgetline() when line crosses buffer boundary */
	struct	__sbuf _lb;	/* buffer for fgetline() */

	/* 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[];
__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() optimisation */
#define	__SNPT	0x0800		/* do not do fseek() optimisation */
#define	__SOFF	0x1000		/* set iff _offset is in fact correct */
#define	__SMOD	0x2000		/* true => fgetline modified _p text */

/*
 * 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 should be the number of descriptors
 * that the kernel can provide without allocation of a resource that can
 * fail without the process sleeping.  Do not use this for anything.
 */
#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. */
#ifndef _ANSI_SOURCE
#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

#define	stdin	(&__sF[0])
#define	stdout	(&__sF[1])
#define	stderr	(&__sF[2])

/*
 * Functions defined in ANSI C standard.
 */
__BEGIN_DECLS
void	 clearerr __P((FILE *));
int	 fclose __P((FILE *));
int	 feof __P((FILE *));
int	 ferror __P((FILE *));
int	 fflush __P((FILE *));
int	 fgetc __P((FILE *));
int	 fgetpos __P((FILE *, fpos_t *));
char	*fgets __P((char *, size_t, FILE *));
FILE	*fopen __P((const char *, const char *));
int	 fprintf __P((FILE *, const char *, ...));
int	 fputc __P((int, FILE *));
int	 fputs __P((const char *, FILE *));
size_t	 fread __P((void *, size_t, size_t, FILE *));
FILE	*freopen __P((const char *, const char *, FILE *));
int	 fscanf __P((FILE *, const char *, ...));
int	 fseek __P((FILE *, long, int));
int	 fsetpos __P((FILE *, const fpos_t *));
long	 ftell __P((const FILE *));
size_t	 fwrite __P((const void *, size_t, size_t, FILE *));
int	 getc __P((FILE *));
int	 getchar __P((void));
char	*gets __P((char *));
#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
extern int sys_nerr;			/* perror(3) external variables */
extern const char *const sys_errlist[];
#endif
void	 perror __P((const char *));
int	 printf __P((const char *, ...));
int	 putc __P((int, FILE *));
int	 putchar __P((int));
int	 puts __P((const char *));
int	 remove __P((const char *));
int	 rename  __P((const char *, const char *));
void	 rewind __P((FILE *));
int	 scanf __P((const char *, ...));
void	 setbuf __P((FILE *, char *));
int	 setvbuf __P((FILE *, char *, int, size_t));
int	 sprintf __P((char *, const char *, ...));
int	 sscanf __P((const char *, const char *, ...));
FILE	*tmpfile __P((void));
char	*tmpnam __P((char *));
int	 ungetc __P((int, FILE *));
int	 vfprintf __P((FILE *, const char *, _BSD_VA_LIST_));
int	 vprintf __P((const char *, _BSD_VA_LIST_));
int	 vsprintf __P((char *, const char *, _BSD_VA_LIST_));
__END_DECLS

/*
 * Functions defined in POSIX 1003.1.
 */
#ifndef _ANSI_SOURCE
#define	L_cuserid	9	/* size for cuserid(); UT_NAMESIZE + 1 */
#define	L_ctermid	1024	/* size for ctermid(); PATH_MAX */

__BEGIN_DECLS
char	*ctermid __P((char *));
FILE	*fdopen __P((int, const char *));
int	 fileno __P((FILE *));
__END_DECLS
#endif /* not ANSI */

/*
 * Routines that are purely local.
 */
#if !defined (_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
__BEGIN_DECLS
char	*fgetline __P((FILE *, size_t *));
int	 fpurge __P((FILE *));
int	 getw __P((FILE *));
int	 pclose __P((FILE *));
FILE	*popen __P((const char *, const char *));
int	 putw __P((int, FILE *));
void	 setbuffer __P((FILE *, char *, int));
int	 setlinebuf __P((FILE *));
char	*tempnam __P((const char *, const char *));
int	 snprintf __P((char *, size_t, const char *, ...));
int	 vsnprintf __P((char *, size_t, const char *, _BSD_VA_LIST_));
int	 vscanf __P((const char *, _BSD_VA_LIST_));
int	 vsscanf __P((const char *, const char *, _BSD_VA_LIST_));
FILE	*zopen __P((const char *, const char *, int));
__END_DECLS

/*
 * This is a #define because the function is used internally and
 * (unlike vfscanf) the name __svfscanf is guaranteed not to collide
 * with a user function when _ANSI_SOURCE or _POSIX_SOURCE is defined.
 */
#define	 vfscanf	__svfscanf

/*
 * Stdio function-access interface.
 */
__BEGIN_DECLS
FILE	*funopen __P((const void *,
		int (*)(void *, char *, int),
		int (*)(void *, const char *, int),
		fpos_t (*)(void *, fpos_t, int),
		int (*)(void *)));
__END_DECLS
#define	fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0)
#define	fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0)
#endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */

/*
 * Functions internal to the implementation.
 */
__BEGIN_DECLS
int	__srget __P((FILE *));
int	__svfscanf __P((FILE *, const char *, _BSD_VA_LIST_));
int	__swbuf __P((int, FILE *));
__END_DECLS

/*
 * 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)

#define	feof(p)		__sfeof(p)
#define	ferror(p)	__sferror(p)
#define	clearerr(p)	__sclearerr(p)

#ifndef _ANSI_SOURCE
#define	fileno(p)	__sfileno(p)
#endif

#ifndef lint
#define	getc(fp)	__sgetc(fp)
#define putc(x, fp)	__sputc(x, fp)
#endif /* lint */

#define	getchar()	getc(stdin)
#define	putchar(x)	putc(x, stdout)
#endif /* _STDIO_H_ */
Commit	Line	Data
238b8fe5 KB	1	/*-
	2	* Copyright (c) 1990 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* This code is derived from software contributed to Berkeley by
	6	* Chris Torek.
	7	*
	8	* %sccs.include.redist.c%
586c39b1	9	*
27295500	10	* @(#)stdio.h 5.26 (Berkeley) %G%
586c39b1 DF	11	*/
586c39b1 DF	12
238b8fe5 KB	13	#ifndef _STDIO_H_
	14	#define _STDIO_H_
	15
eb1dc81b	16	#if !defined(_ANSI_SOURCE) && !defined(__STRICT_ANSI__)
446b1b9b	17	#include <sys/types.h>
eb1dc81b CT	18	#endif
eb1dc81b CT	19
5038e9e5	20	#include <sys/cdefs.h>
238b8fe5	21
6124b236	22	#include <machine/ansi.h>
3d2899e6 KB	23	#ifdef _BSD_SIZE_T_
	24	typedef _BSD_SIZE_T_ size_t;
	25	#undef _BSD_SIZE_T_
238b8fe5 KB	26	#endif
238b8fe5 KB	27
97b8a2b7 KB	28	#ifndef NULL
	29	#define NULL 0
	30	#endif
	31
eb1dc81b CT	32	/*
	33	* This is fairly grotesque, but pure ANSI code must not inspect the
	34	* innards of an fpos_t anyway. The library internally uses off_t,
27295500 CT	35	* which we assume is exactly as big as eight chars. (When we switch
	36	* to gcc 2.4 we will use __attribute__ here.)
	37	*
	38	* WARNING: the alignment constraints on an off_t and the struct below
	39	* differ on (e.g.) the SPARC. Hence, the placement of an fpos_t object
	40	* in a structure will change if fpos_t's are not aligned on 8-byte
	41	* boundaries. THIS IS A CROCK, but for now there is no way around it.
eb1dc81b CT	42	*/
	43	#if !defined(_ANSI_SOURCE) && !defined(__STRICT_ANSI__)
	44	typedef off_t fpos_t;
	45	#else
	46	typedef struct __sfpos {
	47	char _pos[8];
	48	} fpos_t;
	49	#endif
238b8fe5 KB	50
	51	#define _FSTDIO /* Define for new stdio with functions. */
	52
5038e9e5 KB	53	/*
	54	* NB: to fit things in six character monocase externals, the stdio
	55	* code uses the prefix `__s' for stdio objects, typically followed
	56	* by a three-character attempt at a mnemonic.
	57	*/
	58
238b8fe5 KB	59	/* stdio buffers */
	60	struct __sbuf {
	61	unsigned char *_base;
	62	int _size;
	63	};
	64
	65	/*
	66	* stdio state variables.
	67	*
	68	* The following always hold:
	69	*
	70	* if (_flags&(__SLBF\|__SWR)) == (__SLBF\|__SWR),
	71	* _lbfsize is -_bf._size, else _lbfsize is 0
	72	* if _flags&__SRD, _w is 0
	73	* if _flags&__SWR, _r is 0
	74	*
	75	* This ensures that the getc and putc macros (or inline functions) never
	76	* try to write or read from a file that is in `read' or `write' mode.
	77	* (Moreover, they can, and do, automatically switch from read mode to
	78	* write mode, and back, on "r+" and "w+" files.)
	79	*
	80	* _lbfsize is used only to make the inline line-buffered output stream
	81	* code as compact as possible.
	82	*
	83	* _ub, _up, and _ur are used when ungetc() pushes back more characters
	84	* than fit in the current _bf, or when ungetc() pushes back a character
	85	* that does not match the previous one in _bf. When this happens,
	86	* _ub._base becomes non-nil (i.e., a stream has ungetc() data iff
	87	* _ub._base!=NULL) and _up and _ur save the current values of _p and _r.
27295500 CT	88	*
27295500 CT	89	* NB: see WARNING above before changing the layout of this structure!
238b8fe5 KB	90	*/
	91	typedef struct __sFILE {
	92	unsigned char _p; / current position in (some) buffer */
	93	int _r; /* read space left for getc() */
	94	int _w; /* write space left for putc() */
	95	short _flags; /* flags, below; this FILE is free if 0 */
	96	short _file; /* fileno, if Unix descriptor, else -1 */
	97	struct __sbuf _bf; /* the buffer (at least 1 byte, if !NULL) */
	98	int _lbfsize; /* 0 or -_bf._size, for inline putc */
	99
	100	/* operations */
	101	void _cookie; / cookie passed to io functions */
4b22ff03 DS	102	int (_close) __P((void ));
	103	int (_read) __P((void , char *, int));
	104	fpos_t (_seek) __P((void , fpos_t, int));
	105	int (_write) __P((void , const char *, int));
238b8fe5 KB	106
	107	/* separate buffer for long sequences of ungetc() */
	108	struct __sbuf _ub; /* ungetc buffer */
	109	unsigned char _up; / saved _p when _p is doing ungetc data */
	110	int _ur; /* saved _r when _r is counting ungetc data */
	111
	112	/* tricks to meet minimum requirements even when malloc() fails */
	113	unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */
	114	unsigned char _nbuf[1]; /* guarantee a getc() buffer */
	115
	116	/* separate buffer for fgetline() when line crosses buffer boundary */
	117	struct __sbuf _lb; /* buffer for fgetline() */
	118
	119	/* Unix stdio files get aligned to block boundaries on fseek() */
	120	int _blksize; /* stat.st_blksize (may be != _bf._size) */
27295500	121	fpos_t _offset; /* current lseek offset (see WARNING) */
238b8fe5 KB	122	} FILE;
238b8fe5 KB	123
d9f57e12	124	__BEGIN_DECLS
238b8fe5	125	extern FILE __sF[];
d9f57e12	126	__END_DECLS
238b8fe5 KB	127
	128	#define __SLBF 0x0001 /* line buffered */
	129	#define __SNBF 0x0002 /* unbuffered */
	130	#define __SRD 0x0004 /* OK to read */
	131	#define __SWR 0x0008 /* OK to write */
	132	/* RD and WR are never simultaneously asserted */
	133	#define __SRW 0x0010 /* open for reading & writing */
	134	#define __SEOF 0x0020 /* found EOF */
	135	#define __SERR 0x0040 /* found error */
	136	#define __SMBF 0x0080 /* _buf is from malloc */
	137	#define __SAPP 0x0100 /* fdopen()ed in append mode */
	138	#define __SSTR 0x0200 /* this is an sprintf/snprintf string */
	139	#define __SOPT 0x0400 /* do fseek() optimisation */
	140	#define __SNPT 0x0800 /* do not do fseek() optimisation */
	141	#define __SOFF 0x1000 /* set iff _offset is in fact correct */
	142	#define __SMOD 0x2000 /* true => fgetline modified _p text */
	143
	144	/*
	145	* The following three definitions are for ANSI C, which took them
	146	* from System V, which brilliantly took internal interface macros and
	147	* made them official arguments to setvbuf(), without renaming them.
	148	* Hence, these ugly _IOxxx names are supposed to appear in user code.
	149	*
	150	* Although numbered as their counterparts above, the implementation
	151	* does not rely on this.
	152	*/
	153	#define _IOFBF 0 /* setvbuf should set fully buffered */
	154	#define _IOLBF 1 /* setvbuf should set line buffered */
	155	#define _IONBF 2 /* setvbuf should set unbuffered */
	156
	157	#define BUFSIZ 1024 /* size of buffer used by setbuf */
7002c7bd MT	158	#define EOF (-1)
7002c7bd MT	159
238b8fe5 KB	160	/*
	161	* FOPEN_MAX is a minimum maximum, and should be the number of descriptors
	162	* that the kernel can provide without allocation of a resource that can
	163	* fail without the process sleeping. Do not use this for anything.
	164	*/
	165	#define FOPEN_MAX 20 /* must be <= OPEN_MAX <sys/syslimits.h> */
	166	#define FILENAME_MAX 1024 /* must be <= PATH_MAX <sys/syslimits.h> */
7002c7bd	167
238b8fe5 KB	168	/* System V/ANSI C; this is the wrong way to do this, do not use these. */
238b8fe5 KB	169	#ifndef _ANSI_SOURCE
45c3183f	170	#define P_tmpdir "/var/tmp/"
238b8fe5 KB	171	#endif
	172	#define L_tmpnam 1024 /* XXX must be == PATH_MAX */
	173	#define TMP_MAX 308915776
	174
	175	#ifndef SEEK_SET
	176	#define SEEK_SET 0 /* set file offset to offset */
	177	#endif
	178	#ifndef SEEK_CUR
	179	#define SEEK_CUR 1 /* set file offset to current plus offset */
	180	#endif
	181	#ifndef SEEK_END
	182	#define SEEK_END 2 /* set file offset to EOF plus offset */
	183	#endif
	184
	185	#define stdin (&__sF[0])
	186	#define stdout (&__sF[1])
	187	#define stderr (&__sF[2])
	188
	189	/*
	190	* Functions defined in ANSI C standard.
	191	*/
5038e9e5 KB	192	__BEGIN_DECLS
	193	void clearerr __P((FILE *));
	194	int fclose __P((FILE *));
	195	int feof __P((FILE *));
	196	int ferror __P((FILE *));
	197	int fflush __P((FILE *));
	198	int fgetc __P((FILE *));
	199	int fgetpos __P((FILE , fpos_t ));
	200	char fgets __P((char , size_t, FILE *));
4b22ff03	201	FILE fopen __P((const char , const char *));
5038e9e5 KB	202	int fprintf __P((FILE , const char , ...));
	203	int fputc __P((int, FILE *));
	204	int fputs __P((const char , FILE ));
ccb7e87d	205	size_t fread __P((void , size_t, size_t, FILE ));
4b22ff03	206	FILE freopen __P((const char , const char , FILE ));
5038e9e5 KB	207	int fscanf __P((FILE , const char , ...));
	208	int fseek __P((FILE *, long, int));
	209	int fsetpos __P((FILE , const fpos_t ));
	210	long ftell __P((const FILE *));
ccb7e87d	211	size_t fwrite __P((const void , size_t, size_t, FILE ));
5038e9e5 KB	212	int getc __P((FILE *));
	213	int getchar __P((void));
	214	char gets __P((char ));
c3ae73e3 KB	215	#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
c3ae73e3 KB	216	extern int sys_nerr; /* perror(3) external variables */
51b54813	217	extern const char *const sys_errlist[];
c3ae73e3	218	#endif
5038e9e5 KB	219	void perror __P((const char *));
	220	int printf __P((const char *, ...));
	221	int putc __P((int, FILE *));
	222	int putchar __P((int));
	223	int puts __P((const char *));
	224	int remove __P((const char *));
4b22ff03	225	int rename __P((const char , const char ));
5038e9e5 KB	226	void rewind __P((FILE *));
	227	int scanf __P((const char *, ...));
	228	void setbuf __P((FILE , char ));
	229	int setvbuf __P((FILE , char , int, size_t));
	230	int sprintf __P((char , const char , ...));
1f1f39ac	231	int sscanf __P((const char , const char , ...));
5038e9e5 KB	232	FILE *tmpfile __P((void));
	233	char tmpnam __P((char ));
	234	int ungetc __P((int, FILE *));
3d2899e6 KB	235	int vfprintf __P((FILE , const char , _BSD_VA_LIST_));
	236	int vprintf __P((const char *, _BSD_VA_LIST_));
	237	int vsprintf __P((char , const char , _BSD_VA_LIST_));
5038e9e5	238	__END_DECLS
238b8fe5 KB	239
	240	/*
	241	* Functions defined in POSIX 1003.1.
	242	*/
	243	#ifndef _ANSI_SOURCE
	244	#define L_cuserid 9 /* size for cuserid(); UT_NAMESIZE + 1 */
	245	#define L_ctermid 1024 /* size for ctermid(); PATH_MAX */
	246
5038e9e5	247	__BEGIN_DECLS
41dd63a8	248	char ctermid __P((char ));
5038e9e5 KB	249	FILE fdopen __P((int, const char ));
	250	int fileno __P((FILE *));
	251	__END_DECLS
4b22ff03	252	#endif /* not ANSI */
238b8fe5 KB	253
	254	/*
	255	* Routines that are purely local.
	256	*/
4b22ff03	257	#if !defined (_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
5038e9e5 KB	258	__BEGIN_DECLS
	259	char fgetline __P((FILE , size_t *));
	260	int fpurge __P((FILE *));
	261	int getw __P((FILE *));
	262	int pclose __P((FILE *));
4b22ff03	263	FILE popen __P((const char , const char *));
5038e9e5 KB	264	int putw __P((int, FILE *));
	265	void setbuffer __P((FILE , char , int));
	266	int setlinebuf __P((FILE *));
45c3183f	267	char tempnam __P((const char , const char *));
5038e9e5	268	int snprintf __P((char , size_t, const char , ...));
3d2899e6 KB	269	int vsnprintf __P((char , size_t, const char , _BSD_VA_LIST_));
	270	int vscanf __P((const char *, _BSD_VA_LIST_));
	271	int vsscanf __P((const char , const char , _BSD_VA_LIST_));
d92240ee	272	FILE zopen __P((const char , const char *, int));
5038e9e5	273	__END_DECLS
cede253f	274
6b5bab0e DS	275	/*
	276	* This is a #define because the function is used internally and
	277	* (unlike vfscanf) the name __svfscanf is guaranteed not to collide
	278	* with a user function when _ANSI_SOURCE or _POSIX_SOURCE is defined.
	279	*/
	280	#define vfscanf __svfscanf
	281
238b8fe5 KB	282	/*
	283	* Stdio function-access interface.
	284	*/
5038e9e5	285	__BEGIN_DECLS
4b22ff03 DS	286	FILE funopen __P((const void ,
	287	int ()(void , char *, int),
	288	int ()(void , const char *, int),
	289	fpos_t ()(void , fpos_t, int),
	290	int ()(void )));
5038e9e5	291	__END_DECLS
238b8fe5 KB	292	#define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0)
238b8fe5 KB	293	#define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0)
d9f57e12	294	#endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
238b8fe5 KB	295
	296	/*
	297	* Functions internal to the implementation.
	298	*/
d9f57e12	299	__BEGIN_DECLS
5038e9e5	300	int __srget __P((FILE *));
3d2899e6	301	int __svfscanf __P((FILE , const char , _BSD_VA_LIST_));
5038e9e5	302	int __swbuf __P((int, FILE *));
d9f57e12	303	__END_DECLS
238b8fe5 KB	304
	305	/*
	306	* The __sfoo macros are here so that we can
	307	* define function versions in the C library.
	308	*/
	309	#define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
6b5bab0e	310	#if defined(__GNUC__) && defined(__STDC__)
a0b1156b	311	static __inline int __sputc(int _c, FILE *_p) {
238b8fe5 KB	312	if (--_p->_w >= 0 \|\| (_p->_w >= _p->_lbfsize && (char)_c != '\n'))
	313	return (*_p->_p++ = _c);
	314	else
	315	return (__swbuf(_c, _p));
	316	}
	317	#else
	318	/*
	319	* This has been tuned to generate reasonable code on the vax using pcc.
	320	*/
	321	#define __sputc(c, p) \
	322	(--(p)->_w < 0 ? \
	323	(p)->_w >= (p)->_lbfsize ? \
	324	((p)->_p = (c)), (p)->_p != '\n' ? \
	325	(int)*(p)->_p++ : \
	326	__swbuf('\n', p) : \
	327	__swbuf((int)(c), p) : \
	328	((p)->_p = (c), (int)(p)->_p++))
	329	#endif
	330
	331	#define __sfeof(p) (((p)->_flags & __SEOF) != 0)
	332	#define __sferror(p) (((p)->_flags & __SERR) != 0)
	333	#define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR\|__SEOF)))
	334	#define __sfileno(p) ((p)->_file)
	335
	336	#define feof(p) __sfeof(p)
	337	#define ferror(p) __sferror(p)
	338	#define clearerr(p) __sclearerr(p)
	339
	340	#ifndef _ANSI_SOURCE
	341	#define fileno(p) __sfileno(p)
	342	#endif
	343
	344	#ifndef lint
	345	#define getc(fp) __sgetc(fp)
	346	#define putc(x, fp) __sputc(x, fp)
	347	#endif /* lint */
	348
	349	#define getchar() getc(stdin)
	350	#define putchar(x) putc(x, stdout)
	351	#endif /* _STDIO_H_ */