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 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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 */
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 */
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/*
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/*
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FUNCTION
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FUNCTION
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<>---flush buffered file output
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<>, <>---flush buffered file output
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INDEX
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INDEX
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	fflush
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INDEX
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	fflush
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	fflush_unlocked
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INDEX
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	_fflush_r
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INDEX
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INDEX
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	_fflush_r
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	_fflush_unlocked_r
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ANSI_SYNOPSIS
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	#include
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	int fflush(FILE *<[fp]>);
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	#define _BSD_SOURCE
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ANSI_SYNOPSIS
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	#include
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	int fflush_unlocked(FILE *<[fp]>);
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	#include
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	int _fflush_r(struct _reent *<[reent]>, FILE *<[fp]>);
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	#include
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	int fflush(FILE *<[fp]>);
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	#define _BSD_SOURCE
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	#include
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	int _fflush_r(struct _reent *<[reent]>, FILE *<[fp]>);
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	int _fflush_unlocked_r(struct _reent *<[reent]>, FILE *<[fp]>);
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Additionally, if <[fp]> is a seekable input stream visiting a file
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Additionally, if <[fp]> is a seekable input stream visiting a file
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descriptor, set the position of the file descriptor to match next
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descriptor, set the position of the file descriptor to match next
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unread byte, useful for obeying POSIX semantics when ending a process
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unread byte, useful for obeying POSIX semantics when ending a process
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without consuming all input from the stream.
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without consuming all input from the stream.
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<> is a non-thread-safe version of <>.
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<> may only safely be used within a scope
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protected by flockfile() (or ftrylockfile()) and funlockfile().  This
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function may safely be used in a multi-threaded program if and only
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if they are called while the invoking thread owns the (FILE *)
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object, as is the case after a successful call to the flockfile() or
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ftrylockfile() functions.  If threads are disabled, then
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<> is equivalent to <>.
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The alternate function <<_fflush_r>> is a reentrant version, where the
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The alternate functions <<_fflush_r>> and <<_fflush_unlocked_r>> are
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extra argument <[reent]> is a pointer to a reentrancy structure, and
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reentrant versions, where the extra argument <[reent]> is a pointer to
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<[fp]> must not be NULL.
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a reentrancy structure, and <[fp]> must not be NULL.
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RETURNS
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RETURNS
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<> returns <<0>> unless it encounters a write error; in that
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<> returns <<0>> unless it encounters a write error; in that
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situation, it returns <>.
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situation, it returns <>.
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PORTABILITY
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ANSI C requires <>.  The behavior on input streams is only
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PORTABILITY
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specified by POSIX, and not all implementations follow POSIX rules.
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ANSI C requires <>.  The behavior on input streams is only
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specified by POSIX, and not all implementations follow POSIX rules.
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<> is a BSD extension also provided by GNU libc.
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No supporting OS subroutines are required.
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No supporting OS subroutines are required.
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*/
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*/
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#include <_ansi.h>
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#include
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#include
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#include "local.h"
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#ifdef __IMPL_UNLOCKED__
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#include <_ansi.h>
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#define _fflush_r _fflush_unlocked_r
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#include
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#define fflush fflush_unlocked
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#include
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#endif
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      n -= t;
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      n -= t;
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    }
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    }
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  return 0;
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  return 0;
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}
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}
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#ifdef _STDIO_BSD_SEMANTICS
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/* Called from _cleanup_r.  At exit time, we don't need file locking,
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   and we don't want to move the underlying file pointer unless we're
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   writing. */
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int
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_DEFUN(__sflushw_r, (ptr, fp),
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       struct _reent *ptr _AND
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       register FILE *fp)
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{
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  return (fp->_flags & __SWR) ?  __sflush_r (ptr, fp) : 0;
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}
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#endif
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#endif /* __IMPL_UNLOCKED__ */
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int
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int
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_DEFUN(_fflush_r, (ptr, fp),
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_DEFUN(_fflush_r, (ptr, fp),
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       struct _reent *ptr _AND
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       struct _reent *ptr _AND
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       register FILE * fp)
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       register FILE * fp)