89 lines
2.1 KiB
C
89 lines
2.1 KiB
C
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/*
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FUNCTION
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<<fcloseall>>---close all files
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INDEX
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fcloseall
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INDEX
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_fcloseall_r
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ANSI_SYNOPSIS
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#include <stdio.h>
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int fcloseall(void);
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int _fcloseall_r (struct _reent *<[ptr]>);
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TRAD_SYNOPSIS
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#include <stdio.h>
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int fcloseall()
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int _fcloseall_r (<[ptr]>)
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struct _reent *<[ptr]>;
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DESCRIPTION
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<<fcloseall>> closes all files in the current reentrancy struct's domain.
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The function <<_fcloseall_r>> is the same function, except the reentrancy
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struct is passed in as the <[ptr]> argument.
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This function is not recommended as it closes all streams, including
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the std streams.
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RETURNS
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<<fclose>> returns <<0>> if all closes are successful. Otherwise,
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EOF is returned.
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PORTABILITY
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<<fcloseall>> is a glibc extension.
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Required OS subroutines: <<close>>, <<fstat>>, <<isatty>>, <<lseek>>,
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<<read>>, <<sbrk>>, <<write>>.
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*/
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/* This file based upon fwalk.c. */
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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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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the University of California, Berkeley. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include "local.h"
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int
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_fcloseall_r (ptr)
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struct _reent *ptr;
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{
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register FILE *fp;
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register int n, ret = 0;
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register struct _glue *g;
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for (g = &ptr->__sglue; g != NULL; g = g->_next)
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for (fp = g->_iobs, n = g->_niobs; --n >= 0; fp++)
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if (fp->_flags != 0)
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ret |= fclose (fp);
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return ret;
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}
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#ifndef _REENT_ONLY
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int
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fcloseall (void)
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{
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return _fcloseall_r (_REENT);
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}
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#endif
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