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/*-
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Chris Torek.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)stdio.h 8.5 (Berkeley) 4/29/95
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*/
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#ifndef _STDIO_H_
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#define _STDIO_H_
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#include <sys/types.h> |
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#include <sys/cdefs.h> |
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#if !defined(_SIZE_T)
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#define _SIZE_T
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typedef unsigned int size_t; /* size of something in bytes */ |
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#endif
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#include <machine/stdarg.h> |
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#ifndef NULL |
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#if !defined(__cplusplus)
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#define NULL ((void *)0) |
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#else
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#define NULL 0 |
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#endif
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#endif
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typedef off_t fpos_t;
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#define _FSTDIO /* Define for new stdio with functions. */ |
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/*
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* NB: to fit things in six character monocase externals, the stdio
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* code uses the prefix `__s' for stdio objects, typically followed
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* by a three-character attempt at a mnemonic.
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*/
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/* stdio buffers */
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struct __sbuf {
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unsigned char *_base; |
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int _size;
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}; |
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/*
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* stdio state variables.
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*
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* The following always hold:
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*
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* if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR),
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* _lbfsize is -_bf._size, else _lbfsize is 0
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* if _flags&__SRD, _w is 0
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* if _flags&__SWR, _r is 0
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*
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* This ensures that the getc and putc macros (or inline functions) never
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* try to write or read from a file that is in `read' or `write' mode.
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* (Moreover, they can, and do, automatically switch from read mode to
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* write mode, and back, on "r+" and "w+" files.)
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*
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* _lbfsize is used only to make the inline line-buffered output stream
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* code as compact as possible.
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*
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* _ub, _up, and _ur are used when ungetc() pushes back more characters
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* than fit in the current _bf, or when ungetc() pushes back a character
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* that does not match the previous one in _bf. When this happens,
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* _ub._base becomes non-nil (i.e., a stream has ungetc() data iff
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* _ub._base!=NULL) and _up and _ur save the current values of _p and _r.
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*
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* NB: see WARNING above before changing the layout of this structure!
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*/
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typedef struct __sFILE { |
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struct __sFILE *next; /* file chain */ |
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unsigned char *_p; /* current position in (some) buffer */ |
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int _r; /* read space left for getc() */ |
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int _w; /* write space left for putc() */ |
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short _flags; /* flags, below; this FILE is free if 0 */ |
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short _file; /* fileno, if Unix descriptor, else -1 */ |
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struct __sbuf _bf; /* the buffer (at least 1 byte, if !NULL) */ |
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/* separate buffer for long sequences of ungetc() */
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struct __sbuf _ub; /* ungetc buffer */ |
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unsigned char *_up; /* saved _p when _p is doing ungetc data */ |
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int _ur; /* saved _r when _r is counting ungetc data */ |
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/* tricks to meet minimum requirements even when malloc() fails */
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unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */ |
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unsigned char _nbuf[1]; /* guarantee a getc() buffer */ |
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} FILE; |
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__BEGIN_DECLS |
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extern FILE __sF[];
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__END_DECLS |
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#define __SLBF 0x0001 /* line buffered */ |
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#define __SNBF 0x0002 /* unbuffered */ |
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#define __SRD 0x0004 /* OK to read */ |
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#define __SWR 0x0008 /* OK to write */ |
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/* RD and WR are never simultaneously asserted */
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#define __SRW 0x0010 /* open for reading & writing */ |
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#define __SEOF 0x0020 /* found EOF */ |
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#define __SERR 0x0040 /* found error */ |
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#define __SMBF 0x0080 /* _buf is from malloc */ |
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#define __SAPP 0x0100 /* fdopen()ed in append mode */ |
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#define __SSTR 0x0200 /* this is an sprintf/snprintf string */ |
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/*
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* The following three definitions are for ANSI C, which took them
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* from System V, which brilliantly took internal interface macros and
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* made them official arguments to setvbuf(), without renaming them.
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* Hence, these ugly _IOxxx names are *supposed* to appear in user code.
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*
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* Although numbered as their counterparts above, the implementation
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* does not rely on this.
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*/
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#define _IOFBF 0 /* setvbuf should set fully buffered */ |
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#define _IOLBF 1 /* setvbuf should set line buffered */ |
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#define _IONBF 2 /* setvbuf should set unbuffered */ |
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#define BUFSIZ 512 /* size of buffer used by setbuf */ |
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#define EOF (-1) |
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/*
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* FOPEN_MAX is a minimum maximum, and is the number of streams that
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* stdio can provide without attempting to allocate further resources
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* (which could fail). Do not use this for anything.
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*/
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/* must be == _POSIX_STREAM_MAX <limits.h> */
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#define FOPEN_MAX 16 /* must be <= OPEN_MAX <sys/syslimits.h> */ |
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#define FILENAME_MAX 256 /* must be <= PATH_MAX <sys/syslimits.h> */ |
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/* System V/ANSI C; this is the wrong way to do this, do *not* use these. */
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#ifndef _ANSI_SOURCE
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#define P_tmpdir "/var/tmp/" |
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#endif
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#define L_tmpnam 255 /* XXX must be == PATH_MAX */ |
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#define TMP_MAX 308915776 |
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/* access function */
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#define F_OK 0 /* test for existence of file */ |
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#define X_OK 0x01 /* test for execute or search permission */ |
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#define W_OK 0x02 /* test for write permission */ |
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#define R_OK 0x04 /* test for read permission */ |
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/* whence values for lseek(2) */
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#define SEEK_SET 0 /* set file offset to offset */ |
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#define SEEK_CUR 1 /* set file offset to current plus offset */ |
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#define SEEK_END 2 /* set file offset to EOF plus offset */ |
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#define stdin (&__sF[0]) |
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#define stdout (&__sF[1]) |
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#define stderr (&__sF[2]) |
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/*
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* Functions defined in ANSI C standard.
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*/
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__BEGIN_DECLS |
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void clearerr(FILE *);
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int fclose(FILE *);
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int feof(FILE *);
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int ferror(FILE *);
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int fflush(FILE *);
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int fgetc(FILE *);
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int fgetpos(FILE *, fpos_t *);
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char *fgets(char *, size_t, FILE *); |
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FILE *fopen(const char *, const char *); |
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int fprintf(FILE *, const char *, ...); |
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int fputc(int, FILE *); |
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int fputs(const char *, FILE *); |
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size_t fread(void *, size_t, size_t, FILE *);
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FILE *freopen(const char *, const char *, FILE *); |
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int fscanf(FILE *, const char *, ...); |
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int fseek(FILE *, long, int); |
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int fsetpos(FILE *, const fpos_t *); |
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long ftell(FILE *);
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size_t fwrite(const void *, size_t, size_t, FILE *); |
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int getc(FILE *);
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int getchar(void); |
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char *gets(char *); |
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#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
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extern const int _sys_nerr; /* perror(3) external variables */ |
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extern const char *const _sys_errlist[]; |
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#endif
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void perror(const char *); |
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int printf(const char *, ...); |
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int putc(int, FILE *); |
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int putchar(int); |
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int puts(const char *); |
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int remove(const char *); |
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int rename (const char *, const char *); |
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void rewind(FILE *);
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int scanf(const char *, ...); |
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void setbuf(FILE *, char *); |
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int setvbuf(FILE *, char *, int, size_t); |
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int sprintf(char *, const char *, ...); |
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int sscanf(const char *, const char *, ...); |
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FILE *tmpfile(void);
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char *tmpnam(char *); |
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int ungetc(int, FILE *); |
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int vfprintf(FILE *, const char *, va_list); |
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int vprintf(const char *, va_list); |
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int vsprintf(char *, const char *, va_list); |
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__END_DECLS |
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/*
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* Functions defined in POSIX 1003.1.
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*/
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#ifndef _ANSI_SOURCE
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#define L_cuserid 9 /* size for cuserid(); UT_NAMESIZE + 1 */ |
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#define L_ctermid 1024 /* size for ctermid(); PATH_MAX */ |
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__BEGIN_DECLS |
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char *ctermid(char *); |
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FILE *fdopen(int, const char *); |
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int fileno(FILE *);
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__END_DECLS |
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#endif /* not ANSI */ |
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/*
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* Routines that are purely local.
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*/
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#if !defined (_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
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__BEGIN_DECLS |
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int fpurge(FILE *);
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int getw(FILE *);
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int pclose(FILE *);
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FILE *popen(const char *, const char *); |
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int putw(int, FILE *); |
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void setbuffer(FILE *, char *, int); |
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int setlinebuf(FILE *);
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char *tempnam(const char *, const char *); |
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int snprintf(char *, size_t, const char *, ...); |
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int vsnprintf(char *, size_t, const char *, va_list); |
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int vscanf(const char *, va_list); |
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int vsscanf(const char *, const char *, va_list); |
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FILE *zopen(const char *, const char *, int); |
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__END_DECLS |
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/*
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* This is a #define because the function is used internally and
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* (unlike vfscanf) the name __svfscanf is guaranteed not to collide
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* with a user function when _ANSI_SOURCE or _POSIX_SOURCE is defined.
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*/
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#define vfscanf __svfscanf
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#endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */ |
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/*
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* Functions internal to the implementation.
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*/
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__BEGIN_DECLS |
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int __srget(FILE *);
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int __svfscanf(FILE *, const char *, va_list); |
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int __swbuf(int, FILE *); |
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__END_DECLS |
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/*
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* The __sfoo macros are here so that we can
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* define function versions in the C library.
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*/
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#define __sfeof(p) (((p)->_flags & __SEOF) != 0) |
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#define __sferror(p) (((p)->_flags & __SERR) != 0) |
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#define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF))) |
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#define __sfileno(p) ((p)->_file)
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#define feof(p) __sfeof(p)
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#define ferror(p) __sferror(p)
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#define clearerr(p) __sclearerr(p)
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#ifndef _ANSI_SOURCE
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#define fileno(p) __sfileno(p)
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#endif
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#endif /* _STDIO_H_ */ |