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/* $OpenBSD: stdio.h,v 1.53 2016/09/09 18:12:37 millert Exp $ */
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/* $NetBSD: stdio.h,v 1.18 1996/04/25 18:29:21 jtc Exp $ */
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* 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 5.17 (Berkeley) 6/3/91
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*/
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#ifndef _STDIO_H_
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#define _STDIO_H_
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#include <sys/cdefs.h>
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#include <sys/_null.h>
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#include <sys/_types.h>
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#if __BSD_VISIBLE || __POSIX_VISIBLE || __XPG_VISIBLE
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#include <sys/types.h> /* XXX should be removed */
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#endif
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#ifndef _SIZE_T_DEFINED_
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#define _SIZE_T_DEFINED_
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typedef __size_t size_t;
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#endif
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#ifndef _OFF_T_DEFINED_
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#define _OFF_T_DEFINED_
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typedef __off_t off_t;
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#endif
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#define _FSTDIO /* Define for new stdio with functions. */
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typedef off_t fpos_t; /* stdio file position type */
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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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typedef struct __sFILE {
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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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int _lbfsize; /* 0 or -_bf._size, for inline putc */
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/* operations */
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void *_cookie; /* cookie passed to io functions */
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int (*_close)(void *);
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int (*_read)(void *, char *, int);
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fpos_t (*_seek)(void *, fpos_t, int);
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int (*_write)(void *, const char *, int);
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/* extension data, to avoid further ABI breakage */
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struct __sbuf _ext;
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/* data for long sequences of ungetc() */
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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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/* separate buffer for fgetln() when line crosses buffer boundary */
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struct __sbuf _lb; /* buffer for fgetln() */
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/* Unix stdio files get aligned to block boundaries on fseek() */
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int _blksize; /* stat.st_blksize (may be != _bf._size) */
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fpos_t _offset; /* current lseek offset */
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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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#define __SOPT 0x0400 /* do fseek() optimisation */
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#define __SNPT 0x0800 /* do not do fseek() optimisation */
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#define __SOFF 0x1000 /* set iff _offset is in fact correct */
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#define __SMOD 0x2000 /* true => fgetln modified _p text */
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#define __SALC 0x4000 /* allocate string space dynamically */
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#define __SIGN 0x8000 /* ignore this file in _fwalk */
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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 1024 /* 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 should be the number of descriptors
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* that the kernel can provide without allocation of a resource that can
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* fail without the process sleeping. Do not use this for anything.
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*/
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#define FOPEN_MAX 20 /* must be <= OPEN_MAX <sys/syslimits.h> */
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#define FILENAME_MAX 1024 /* 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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#if __BSD_VISIBLE || __XPG_VISIBLE
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#define P_tmpdir "/tmp/"
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#endif
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#define L_tmpnam 1024 /* XXX must be == PATH_MAX */
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#define TMP_MAX 0x7fffffff /* more, but don't overflow int */
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#ifndef SEEK_SET
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#define SEEK_SET 0 /* set file offset to offset */
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#endif
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#ifndef SEEK_CUR
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#define SEEK_CUR 1 /* set file offset to current plus offset */
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#endif
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#ifndef SEEK_END
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#define SEEK_END 2 /* set file offset to EOF plus offset */
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#endif
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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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#if __POSIX_VISIBLE >= 200809
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int dprintf(int, const char * __restrict, ...);
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#endif
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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 *, int, FILE *)
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__attribute__((__bounded__ (__string__,1,2)));
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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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__attribute__((__bounded__ (__size__,1,3,2)));
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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 fseeko(FILE *, off_t, int);
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int fsetpos(FILE *, const fpos_t *);
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long ftell(FILE *);
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off_t ftello(FILE *);
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size_t fwrite(const void *, size_t, size_t, FILE *)
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__attribute__((__bounded__ (__size__,1,3,2)));
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int getc(FILE *);
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int getchar(void);
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#if __POSIX_VISIBLE >= 200809
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ssize_t getdelim(char ** __restrict, size_t * __restrict, int,
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FILE * __restrict);
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ssize_t getline(char ** __restrict, size_t * __restrict,
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FILE * __restrict);
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#endif
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#if __BSD_VISIBLE && !defined(__SYS_ERRLIST)
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#define __SYS_ERRLIST
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extern int sys_nerr; /* perror(3) external variables */
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extern char *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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#if __POSIX_VISIBLE >= 200809
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int renameat(int, const char *, int, const char *);
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#endif
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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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#if __POSIX_VISIBLE >= 200809
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int vdprintf(int, const char * __restrict, __va_list);
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#endif
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#if __ISO_C_VISIBLE >= 1999 || __XPG_VISIBLE >= 500 || __BSD_VISIBLE
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int snprintf(char *, size_t, const char *, ...)
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__attribute__((__format__ (printf, 3, 4)))
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__attribute__((__nonnull__ (3)))
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__attribute__((__bounded__ (__string__,1,2)));
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int vsnprintf(char *, size_t, const char *, __va_list)
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__attribute__((__format__ (printf, 3, 0)))
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__attribute__((__nonnull__ (3)))
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__attribute__((__bounded__(__string__,1,2)));
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#endif /* __ISO_C_VISIBLE >= 1999 || __XPG_VISIBLE >= 500 || __BSD_VISIBLE */
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#if __ISO_C_VISIBLE >= 1999 || __BSD_VISIBLE
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int vfscanf(FILE *, const char *, __va_list)
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__attribute__((__format__ (scanf, 2, 0)))
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__attribute__((__nonnull__ (2)));
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int vscanf(const char *, __va_list)
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__attribute__((__format__ (scanf, 1, 0)))
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__attribute__((__nonnull__ (1)));
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int vsscanf(const char *, const char *, __va_list)
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__attribute__((__format__ (scanf, 2, 0)))
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__attribute__((__nonnull__ (2)));
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#endif /* __ISO_C_VISIBLE >= 1999 || __BSD_VISIBLE */
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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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#if __BSD_VISIBLE || __POSIX_VISIBLE || __XPG_VISIBLE
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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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#if __POSIX_VISIBLE >= 199209
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int pclose(FILE *);
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FILE *popen(const char *, const char *);
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#endif
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#if __POSIX_VISIBLE >= 199506
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void flockfile(FILE *);
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int ftrylockfile(FILE *);
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void funlockfile(FILE *);
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/*
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* These are normally used through macros as defined below, but POSIX
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* requires functions as well.
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*/
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int getc_unlocked(FILE *);
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int getchar_unlocked(void);
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int putc_unlocked(int, FILE *);
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int putchar_unlocked(int);
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#endif /* __POSIX_VISIBLE >= 199506 */
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#if __POSIX_VISIBLE >= 200809
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FILE *fmemopen(void *, size_t, const char *);
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FILE *open_memstream(char **, size_t *);
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#endif /* __POSIX_VISIBLE >= 200809 */
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#if __XPG_VISIBLE
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char *tempnam(const char *, const char *);
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#endif
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__END_DECLS
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#endif /* __BSD_VISIBLE || __POSIX_VISIBLE || __XPG_VISIBLE */
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/*
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* Routines that are purely local.
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*/
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#if __BSD_VISIBLE
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__BEGIN_DECLS
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int asprintf(char **, const char *, ...)
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__attribute__((__format__ (printf, 2, 3)))
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__attribute__((__nonnull__ (2)));
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char *fgetln(FILE *, size_t *);
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int fpurge(FILE *);
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int getw(FILE *);
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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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int vasprintf(char **, const char *, __va_list)
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__attribute__((__format__ (printf, 2, 0)))
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__attribute__((__nonnull__ (2)));
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__END_DECLS
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/*
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* Stdio function-access interface.
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*/
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__BEGIN_DECLS
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FILE *funopen(const void *,
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int (*)(void *, char *, int),
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int (*)(void *, const char *, int),
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fpos_t (*)(void *, fpos_t, int),
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int (*)(void *));
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__END_DECLS
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#define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0)
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#define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0)
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#endif /* __BSD_VISIBLE */
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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 __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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*/
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#define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
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|
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static __inline int __sputc(int _c, FILE *_p) {
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|
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if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n'))
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return (*_p->_p++ = _c);
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else
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return (__swbuf(_c, _p));
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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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extern int __isthreaded;
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#define feof(p) (!__isthreaded ? __sfeof(p) : (feof)(p))
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#define ferror(p) (!__isthreaded ? __sferror(p) : (ferror)(p))
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#define clearerr(p) (!__isthreaded ? __sclearerr(p) : (clearerr)(p))
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#if __POSIX_VISIBLE
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#define fileno(p) (!__isthreaded ? __sfileno(p) : (fileno)(p))
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#endif
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#define getc(fp) (!__isthreaded ? __sgetc(fp) : (getc)(fp))
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#if __BSD_VISIBLE
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/*
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* The macro implementations of putc and putc_unlocked are not
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* fully POSIX compliant; they do not set errno on failure
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*/
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#define putc(x, fp) (!__isthreaded ? __sputc(x, fp) : (putc)(x, fp))
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#endif /* __BSD_VISIBLE */
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#if __POSIX_VISIBLE >= 199506
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#define getc_unlocked(fp) __sgetc(fp)
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/*
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* The macro implementations of putc and putc_unlocked are not
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* fully POSIX compliant; they do not set errno on failure
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*/
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#if __BSD_VISIBLE
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#define putc_unlocked(x, fp) __sputc(x, fp)
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#endif /* __BSD_VISIBLE */
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#endif /* __POSIX_VISIBLE >= 199506 */
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#define getchar() getc(stdin)
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#define putchar(x) putc(x, stdout)
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#define getchar_unlocked() getc_unlocked(stdin)
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#define putchar_unlocked(c) putc_unlocked(c, stdout)
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#endif /* _STDIO_H_ */
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