649702c5a3
Replace uses of the GCC __nonnull__ attribute with the clang nullability qualifiers. The replacement should be transparent for clang developers as the new qualifiers will produce the same warnings and will be useful for static checkers but will not cause aggressive optimizations. GCC will not produce such warnings and developers will have to use upgraded GCC ports built with the system headers from r312538. Hinted by: Apple's Libc-1158.20.4, Bionic libc MFC after: 11.1 Release Differential Revision: https://reviews.freebsd.org/D9004
514 lines
16 KiB
C
514 lines
16 KiB
C
/*-
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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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* $FreeBSD$
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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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__NULLABILITY_PRAGMA_PUSH
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typedef __off_t fpos_t;
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#ifndef _SIZE_T_DECLARED
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typedef __size_t size_t;
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#define _SIZE_T_DECLARED
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#endif
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#if __POSIX_VISIBLE >= 200809
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#ifndef _OFF_T_DECLARED
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#define _OFF_T_DECLARED
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typedef __off_t off_t;
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#endif
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#ifndef _SSIZE_T_DECLARED
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#define _SSIZE_T_DECLARED
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typedef __ssize_t ssize_t;
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#endif
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#endif
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#ifndef _OFF64_T_DECLARED
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#define _OFF64_T_DECLARED
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typedef __off64_t off64_t;
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#endif
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#if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE
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#ifndef _VA_LIST_DECLARED
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typedef __va_list va_list;
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#define _VA_LIST_DECLARED
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#endif
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#endif
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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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* Certain members of __sFILE are accessed directly via macros or
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* inline functions. To preserve ABI compat, these members must not
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* be disturbed. These members are marked below with (*).
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*/
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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 (* _Nullable _close)(void *);
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int (* _Nullable _read)(void *, char *, int);
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fpos_t (* _Nullable _seek)(void *, fpos_t, int);
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int (* _Nullable _write)(void *, const char *, int);
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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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/* 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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struct pthread_mutex *_fl_mutex; /* used for MT-safety */
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struct pthread *_fl_owner; /* current owner */
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int _fl_count; /* recursive lock count */
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int _orientation; /* orientation for fwide() */
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__mbstate_t _mbstate; /* multibyte conversion state */
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int _flags2; /* additional flags */
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};
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#ifndef _STDFILE_DECLARED
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#define _STDFILE_DECLARED
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typedef struct __sFILE FILE;
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#endif
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#ifndef _STDSTREAM_DECLARED
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__BEGIN_DECLS
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extern FILE *__stdinp;
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extern FILE *__stdoutp;
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extern FILE *__stderrp;
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__END_DECLS
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#define _STDSTREAM_DECLARED
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#endif
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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 /* _bf._base 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() optimization */
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#define __SNPT 0x0800 /* do not do fseek() optimization */
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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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#define __S2OAP 0x0001 /* O_APPEND mode is set */
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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 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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#ifndef FOPEN_MAX
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#define FOPEN_MAX 20 /* must be <= OPEN_MAX <sys/syslimits.h> */
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#endif
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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 __XSI_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 308915776
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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 __stdinp
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#define stdout __stdoutp
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#define stderr __stderrp
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__BEGIN_DECLS
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#ifdef _XLOCALE_H_
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#include <xlocale/_stdio.h>
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#endif
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/*
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* Functions defined in ANSI C standard.
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*/
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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 * __restrict, fpos_t * __restrict);
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char *fgets(char * __restrict, int, FILE * __restrict);
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FILE *fopen(const char * __restrict, const char * __restrict);
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int fprintf(FILE * __restrict, const char * __restrict, ...);
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int fputc(int, FILE *);
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int fputs(const char * __restrict, FILE * __restrict);
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size_t fread(void * __restrict, size_t, size_t, FILE * __restrict);
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FILE *freopen(const char * __restrict, const char * __restrict, FILE * __restrict);
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int fscanf(FILE * __restrict, const char * __restrict, ...);
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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 * __restrict, size_t, size_t, FILE * __restrict);
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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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void perror(const char *);
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int printf(const char * __restrict, ...);
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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 * __restrict, ...);
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void setbuf(FILE * __restrict, char * __restrict);
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int setvbuf(FILE * __restrict, char * __restrict, int, size_t);
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int sprintf(char * __restrict, const char * __restrict, ...);
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int sscanf(const char * __restrict, const char * __restrict, ...);
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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 * __restrict, const char * __restrict,
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__va_list);
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int vprintf(const char * __restrict, __va_list);
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int vsprintf(char * __restrict, const char * __restrict,
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__va_list);
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#if __ISO_C_VISIBLE >= 1999
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int snprintf(char * __restrict, size_t, const char * __restrict,
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...) __printflike(3, 4);
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int vfscanf(FILE * __restrict, const char * __restrict, __va_list)
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__scanflike(2, 0);
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int vscanf(const char * __restrict, __va_list) __scanflike(1, 0);
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int vsnprintf(char * __restrict, size_t, const char * __restrict,
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__va_list) __printflike(3, 0);
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int vsscanf(const char * __restrict, const char * __restrict, __va_list)
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__scanflike(2, 0);
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#endif
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/*
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* Functions defined in all versions of POSIX 1003.1.
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*/
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#if __BSD_VISIBLE || (__POSIX_VISIBLE && __POSIX_VISIBLE <= 199506)
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#define L_cuserid 17 /* size for cuserid(3); MAXLOGNAME, legacy */
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#endif
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#if __POSIX_VISIBLE
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#define L_ctermid 1024 /* size for ctermid(3); PATH_MAX */
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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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#endif /* __POSIX_VISIBLE */
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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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int ftrylockfile(FILE *);
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void flockfile(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
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#if __BSD_VISIBLE
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void clearerr_unlocked(FILE *);
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int feof_unlocked(FILE *);
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int ferror_unlocked(FILE *);
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int fileno_unlocked(FILE *);
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#endif
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#if __POSIX_VISIBLE >= 200112
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int fseeko(FILE *, __off_t, int);
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__off_t ftello(FILE *);
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#endif
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#if __BSD_VISIBLE || __XSI_VISIBLE > 0 && __XSI_VISIBLE < 600
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int getw(FILE *);
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int putw(int, FILE *);
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#endif /* BSD or X/Open before issue 6 */
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#if __XSI_VISIBLE
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char *tempnam(const char *, const char *);
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#endif
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#if __POSIX_VISIBLE >= 200809
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FILE *fmemopen(void * __restrict, size_t, const char * __restrict);
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ssize_t getdelim(char ** __restrict, size_t * __restrict, int,
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FILE * __restrict);
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FILE *open_memstream(char **, size_t *);
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int renameat(int, const char *, int, const char *);
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int vdprintf(int, const char * __restrict, __va_list) __printflike(2, 0);
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/* _WITH_GETLINE to allow pre 11 sources to build on 11+ systems */
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ssize_t getline(char ** __restrict, size_t * __restrict, FILE * __restrict);
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int dprintf(int, const char * __restrict, ...) __printflike(2, 3);
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#endif /* __POSIX_VISIBLE >= 200809 */
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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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int asprintf(char **, const char *, ...) __printflike(2, 3);
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char *ctermid_r(char *);
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void fcloseall(void);
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int fdclose(FILE *, int *);
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char *fgetln(FILE *, size_t *);
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const char *fmtcheck(const char *, const char *) __format_arg(2);
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int fpurge(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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__printflike(2, 0);
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/*
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* The system error table contains messages for the first sys_nerr
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* positive errno values. Use strerror() or strerror_r() from <string.h>
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* instead.
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*/
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extern const int sys_nerr;
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extern const char * const sys_errlist[];
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/*
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* Stdio function-access interface.
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*/
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FILE *funopen(const void *,
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int (* _Nullable)(void *, char *, int),
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int (* _Nullable)(void *, const char *, int),
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fpos_t (* _Nullable)(void *, fpos_t, int),
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int (* _Nullable)(void *));
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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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typedef __ssize_t cookie_read_function_t(void *, char *, size_t);
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typedef __ssize_t cookie_write_function_t(void *, const char *, size_t);
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typedef int cookie_seek_function_t(void *, off64_t *, int);
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typedef int cookie_close_function_t(void *);
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typedef struct {
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cookie_read_function_t *read;
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cookie_write_function_t *write;
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cookie_seek_function_t *seek;
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cookie_close_function_t *close;
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} cookie_io_functions_t;
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FILE *fopencookie(void *, const char *, cookie_io_functions_t);
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/*
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* Portability hacks. See <sys/types.h>.
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*/
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#ifndef _FTRUNCATE_DECLARED
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#define _FTRUNCATE_DECLARED
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int ftruncate(int, __off_t);
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#endif
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#ifndef _LSEEK_DECLARED
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#define _LSEEK_DECLARED
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__off_t lseek(int, __off_t, int);
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#endif
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#ifndef _MMAP_DECLARED
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#define _MMAP_DECLARED
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void *mmap(void *, size_t, int, int, int, __off_t);
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#endif
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#ifndef _TRUNCATE_DECLARED
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#define _TRUNCATE_DECLARED
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int truncate(const char *, __off_t);
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#endif
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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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int __srget(FILE *);
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int __swbuf(int, FILE *);
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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 __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
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#if defined(__GNUC__) && defined(__STDC__)
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static __inline int __sputc(int _c, FILE *_p) {
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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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#else
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/*
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* This has been tuned to generate reasonable code on the vax using pcc.
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*/
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#define __sputc(c, p) \
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(--(p)->_w < 0 ? \
|
|
(p)->_w >= (p)->_lbfsize ? \
|
|
(*(p)->_p = (c)), *(p)->_p != '\n' ? \
|
|
(int)*(p)->_p++ : \
|
|
__swbuf('\n', p) : \
|
|
__swbuf((int)(c), p) : \
|
|
(*(p)->_p = (c), (int)*(p)->_p++))
|
|
#endif
|
|
|
|
extern int __isthreaded;
|
|
|
|
#ifndef __cplusplus
|
|
|
|
#define __sfeof(p) (((p)->_flags & __SEOF) != 0)
|
|
#define __sferror(p) (((p)->_flags & __SERR) != 0)
|
|
#define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF)))
|
|
#define __sfileno(p) ((p)->_file)
|
|
|
|
|
|
#define feof(p) (!__isthreaded ? __sfeof(p) : (feof)(p))
|
|
#define ferror(p) (!__isthreaded ? __sferror(p) : (ferror)(p))
|
|
#define clearerr(p) (!__isthreaded ? __sclearerr(p) : (clearerr)(p))
|
|
|
|
#if __POSIX_VISIBLE
|
|
#define fileno(p) (!__isthreaded ? __sfileno(p) : (fileno)(p))
|
|
#endif
|
|
|
|
#define getc(fp) (!__isthreaded ? __sgetc(fp) : (getc)(fp))
|
|
#define putc(x, fp) (!__isthreaded ? __sputc(x, fp) : (putc)(x, fp))
|
|
|
|
#define getchar() getc(stdin)
|
|
#define putchar(x) putc(x, stdout)
|
|
|
|
#if __BSD_VISIBLE
|
|
/*
|
|
* See ISO/IEC 9945-1 ANSI/IEEE Std 1003.1 Second Edition 1996-07-12
|
|
* B.8.2.7 for the rationale behind the *_unlocked() macros.
|
|
*/
|
|
#define feof_unlocked(p) __sfeof(p)
|
|
#define ferror_unlocked(p) __sferror(p)
|
|
#define clearerr_unlocked(p) __sclearerr(p)
|
|
#define fileno_unlocked(p) __sfileno(p)
|
|
#endif
|
|
#if __POSIX_VISIBLE >= 199506
|
|
#define getc_unlocked(fp) __sgetc(fp)
|
|
#define putc_unlocked(x, fp) __sputc(x, fp)
|
|
|
|
#define getchar_unlocked() getc_unlocked(stdin)
|
|
#define putchar_unlocked(x) putc_unlocked(x, stdout)
|
|
#endif
|
|
#endif /* __cplusplus */
|
|
|
|
__END_DECLS
|
|
__NULLABILITY_PRAGMA_POP
|
|
|
|
#endif /* !_STDIO_H_ */
|