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#include "lib.h"
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include "sys9.h"
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int
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close(int d)
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{
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	int n;
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	Fdinfo *f;
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	n = -1;
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	f = &_fdinfo[d];
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	if(d<0 || d>=OPEN_MAX || !(f->flags&FD_ISOPEN))
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		errno = EBADF;
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	else{
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		if(f->flags&(FD_BUFFERED|FD_BUFFEREDX)) {
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			if(f->flags&FD_BUFFERED)
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				_closebuf(d);
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			f->flags &= ~FD_BUFFERED;
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		}
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		n = _CLOSE(d);
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		if(n < 0)
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			_syserrno();
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		_fdinfo[d].flags = 0;
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		_fdinfo[d].oflags = 0;
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		if(_fdinfo[d].name){
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			free(_fdinfo[d].name);
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			_fdinfo[d].name = 0;
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		}
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	}
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	return n;
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}