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__unlock.c
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C/C++ Source or Header
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1996-09-28
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2KB
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74 lines
/*
* This file is part of ixemul.library for the Amiga.
* Copyright (C) 1991, 1992 Markus M. Wild
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#define _KERNEL
#include "ixemul.h"
int __unlock (BPTR lock)
{
struct StandardPacket *sp;
if (lock == NULL)
return 0;
sp = alloca(sizeof(*sp)+2);
sp = LONG_ALIGN (sp);
__init_std_packet(sp);
sp->sp_Pkt.dp_Port = u.u_sync_mp;
sp->sp_Pkt.dp_Type = ACTION_FREE_LOCK;
sp->sp_Pkt.dp_Arg1 = lock;
PutPacket (((struct FileLock *)BTOCPTR (lock))->fl_Task, sp);
__wait_sync_packet (sp);
/* set up Result2 so that the IoErr() works */
((struct Process *)FindTask (0))->pr_Result2 = sp->sp_Pkt.dp_Res2;
return sp->sp_Pkt.dp_Res1;
}
/* ATTENTION: name-clash between sysio-__close and DOS-__Close !! */
void __Close (BPTR fh)
{
struct StandardPacket *sp;
struct FileHandle *fhp = BTOCPTR (fh);
/* only do this is not closing a dummy NIL: filehandle */
if (fhp->fh_Type)
{
sp = alloca(sizeof(*sp)+2);
sp = LONG_ALIGN (sp);
__init_std_packet(sp);
sp->sp_Pkt.dp_Port = u.u_sync_mp;
sp->sp_Pkt.dp_Type = ACTION_END;
sp->sp_Pkt.dp_Arg1 = fhp->fh_Arg1;
PutPacket (fhp->fh_Type, sp);
__wait_sync_packet (sp);
/* set up Result2 so that the IoErr() works */
((struct Process *)FindTask (0))->pr_Result2 = sp->sp_Pkt.dp_Res2;
}
else
((struct Process *)FindTask (0))->pr_Result2 = 0;
FreeDosObject (DOS_FILEHANDLE, fhp);
}