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ixemul-41.4
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rename.c
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1995-05-28
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104 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.
*
* rename.c,v 1.1.1.1 1994/04/04 04:30:32 amiga Exp
*
* rename.c,v
* Revision 1.1.1.1 1994/04/04 04:30:32 amiga
* Initial CVS check in.
*
* Revision 1.1 1992/05/14 19:55:40 mwild
* Initial revision
*
*/
#define KERNEL
#include "ixemul.h"
#include "kprintf.h"
#if __GNUC__ != 2
#define alloca __builtin_alloca
#endif
struct rename_vec {
char *source_name;
BPTR target_dir_lock;
BSTR target_name;
};
static int
__rename_func (struct StandardPacket *sp, struct MsgPort *handler,
BPTR parent_lock,
BSTR name,
struct rename_vec *rv, int *no_error)
{
sp->sp_Pkt.dp_Type = ACTION_RENAME_OBJECT;
sp->sp_Pkt.dp_Arg1 = parent_lock;
sp->sp_Pkt.dp_Arg2 = name;
sp->sp_Pkt.dp_Arg3 = rv->target_dir_lock;
sp->sp_Pkt.dp_Arg4 = rv->target_name;
PutPacket (handler, sp);
__wait_sync_packet (sp);
*no_error = sp->sp_Pkt.dp_Res1 == -1;
/* retry if necessary */
return 1;
}
static int
__get_target_data (struct StandardPacket *sp, struct MsgPort *handler,
BPTR parent_lock,
BSTR name,
struct rename_vec *rv, int *no_error)
{
rv->target_dir_lock = parent_lock;
rv->target_name = name;
sp->sp_Pkt.dp_Res1 = __plock (rv->source_name, __rename_func, rv);
sp->sp_Pkt.dp_Res2 = ((struct Process *)FindTask(0))->pr_Result2;
*no_error = sp->sp_Pkt.dp_Res1 == -1;
/* don't retry */
return 0;
}
int
rename(char *from, char *to)
{
int res;
struct rename_vec rv;
rv.source_name = from;
res = __plock (to, __get_target_data, &rv);
if (res == 0 && IoErr() == ERROR_OBJECT_EXISTS)
{
syscall (SYS_unlink ,to);
res = __plock (to, __get_target_data, &rv);
}
if (!res) errno = __ioerr_to_errno (IoErr ());
KPRINTF (("&errno = %lx, errno = %ld\n", &errno, errno));
return res == -1 ? 0 : -1;
}