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ixemul-41.4
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utimes.c
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1995-09-27
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95 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.
*
* utimes.c,v 1.1.1.1 1994/04/04 04:30:38 amiga Exp
*
* utimes.c,v
* Revision 1.1.1.1 1994/04/04 04:30:38 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
static int
__utimes_func (struct StandardPacket *sp, struct MsgPort *handler,
BPTR parent_lock,
BSTR name,
struct DateStamp *ds, int *no_error)
{
sp->sp_Pkt.dp_Type = ACTION_SET_DATE;
sp->sp_Pkt.dp_Arg1 = 0;
sp->sp_Pkt.dp_Arg2 = parent_lock;
sp->sp_Pkt.dp_Arg3 = name;
sp->sp_Pkt.dp_Arg4 = (long) ds;
PutPacket (handler, sp);
__wait_sync_packet (sp);
*no_error = sp->sp_Pkt.dp_Res1 == -1;
/* we want to set the date of the file pointed to, not that of the link */
return 1;
}
int
utimes(char *name, struct timeval *tvp)
{
struct DateStamp *ds;
struct timeval tv;
int result;
if (!tvp)
/* in this case, fill in the current time */
syscall (SYS_gettimeofday, & tv, 0);
else
/* we have to ignore the value of "accesstime" and only
* look at "modificationtime", that's tvp[1] */
tv = tvp[1];
tv.tv_sec -= ix.ix_gmt_offset;
/* long-alignment here could be overkill, but with DOS you never know.. */
ds = alloca (sizeof (struct DateStamp) + 2);
ds = LONG_ALIGN (ds);
ds->ds_Days = tv.tv_sec / (24 * 60 * 60);
/* subtract unix/amigados time offset */
ds->ds_Days -= 8*365+2;
tv.tv_sec %= 24 * 60 * 60;
ds->ds_Minute = tv.tv_sec / 60;
tv.tv_sec %= 60;
ds->ds_Tick = (tv.tv_sec * TICKS_PER_SECOND +
(tv.tv_usec * TICKS_PER_SECOND)/1000000);
result = __plock (name, __utimes_func, ds);
if (! result) errno = __ioerr_to_errno (IoErr ());
KPRINTF (("&errno = %lx, errno = %ld\n", &errno, errno));
return result == -1 ? 0 : -1;
}