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EnigmA Amiga Run 1997 May
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EnigmA AMIGA RUN 18 (1997)(G.R. Edizioni)(IT)[!][issue 1997-05][EAR-CD II].iso
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arosdev.lha
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closedevice.c
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1997-01-09
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/*
(C) 1995-96 AROS - The Amiga Replacement OS
$Id: closedevice.c,v 1.7 1997/01/01 03:46:07 ldp Exp $
$Log: closedevice.c,v $
Revision 1.7 1997/01/01 03:46:07 ldp
Committed Amiga native (support) code
Changed clib to proto
Revision 1.6 1996/12/10 13:51:40 aros
Moved all #include's in the first column so makedepend can see it.
Revision 1.5 1996/10/24 15:50:46 aros
Use the official AROS macros over the __AROS versions.
Revision 1.4 1996/08/13 13:55:59 digulla
Replaced AROS_LA by AROS_LHA
Replaced some AROS_LH*I by AROS_LH*
Sorted and added includes
Revision 1.3 1996/08/01 17:41:07 digulla
Added standard header for all files
Desc:
Lang: english
*/
#include <exec/execbase.h>
#include <exec/io.h>
#include <dos/dos.h>
#include <aros/libcall.h>
#include <proto/exec.h>
/*****************************************************************************
NAME */
AROS_LH1(void, CloseDevice,
/* SYNOPSIS */
AROS_LHA(struct IORequest *, iORequest, A1),
/* LOCATION */
struct ExecBase *, SysBase, 75, Exec)
/* FUNCTION
Closes a previously opened device. Any outstanding I/O requests must
be finished. It is safe to call CloseDevice with a cleared iorequest
structure or one that failed to open.
INPUTS
iORequest - Pointer to iorequest structure.
RESULT
NOTES
EXAMPLE
BUGS
SEE ALSO
OpenDevice().
INTERNALS
HISTORY
******************************************************************************/
{
AROS_LIBFUNC_INIT
/* Single-thread the close routine. */
Forbid();
/* Something to do? */
if(iORequest->io_Device!=NULL)
{
(void)AROS_LVO_CALL1(BPTR,
AROS_LCA(struct IORequest *,iORequest, A1),
struct Device *,iORequest->io_Device,2,
);
/*
Normally you'd expect the device to be expunged if this returns
non-zero, but this is only exec which doesn't know anything about
seglists - therefore dos.library has to SetFunction() into this
vector for the additional functionality.
*/
/* Trash device field */
iORequest->io_Device=(struct Device *)-1;
}
/* All done. */
Permit();
AROS_LIBFUNC_EXIT
} /* CloseDevice */