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/* Copyright (c) 2014 Yaakov Selkowitz <yselkowi@redhat.com> */
/*
FUNCTION
<<stdio_ext>>,<<__fbufsize>>,<<__fpending>>,<<__flbf>>,<<__freadable>>,<<__fwritable>>,<<__freading>>,<<__fwriting>>---access internals of FILE structure
INDEX
__fbufsize
INDEX
__fpending
INDEX
__flbf
INDEX
__freadable
INDEX
__fwritable
INDEX
__freading
INDEX
__fwriting
SYNOPSIS
#include <stdio.h>
#include <stdio_ext.h>
size_t __fbufsize(FILE *<[fp]>);
size_t __fpending(FILE *<[fp]>);
int __flbf(FILE *<[fp]>);
int __freadable(FILE *<[fp]>);
int __fwritable(FILE *<[fp]>);
int __freading(FILE *<[fp]>);
int __fwriting(FILE *<[fp]>);
DESCRIPTION
These functions provides access to the internals of the FILE structure <[fp]>.
RETURNS
<<__fbufsize>> returns the number of bytes in the buffer of stream <[fp]>.
<<__fpending>> returns the number of bytes in the output buffer of stream <[fp]>.
<<__flbf>> returns nonzero if stream <[fp]> is line-buffered, and <<0>> if not.
<<__freadable>> returns nonzero if stream <[fp]> may be read, and <<0>> if not.
<<__fwritable>> returns nonzero if stream <[fp]> may be written, and <<0>> if not.
<<__freading>> returns nonzero if stream <[fp]> if the last operation on
it was a read, or if it read-only, and <<0>> if not.
<<__fwriting>> returns nonzero if stream <[fp]> if the last operation on
it was a write, or if it write-only, and <<0>> if not.
PORTABILITY
These functions originate from Solaris and are also provided by GNU libc.
No supporting OS subroutines are required.
*/
#ifndef __rtems__
#define _DEFAULT_SOURCE
#include <_ansi.h>
#include <stdio.h>
/* Subroutine versions of the inline or macro functions. */
size_t
__fbufsize (FILE * fp)
{
return (size_t) fp->_bf._size;
}
size_t
__fpending (FILE * fp)
{
return fp->_p - fp->_bf._base;
}
int
__flbf (FILE * fp)
{
return (fp->_flags & __SLBF) != 0;
}
int
__freadable (FILE * fp)
{
return (fp->_flags & (__SRD | __SRW)) != 0;
}
int
__fwritable (FILE * fp)
{
return (fp->_flags & (__SWR | __SRW)) != 0;
}
int
__freading (FILE * fp)
{
return (fp->_flags & __SRD) != 0;
}
int
__fwriting (FILE * fp)
{
return (fp->_flags & __SWR) != 0;
}
#endif /* __rtems__ */
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