home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
EnigmA Amiga Run 1995 October
/
EnigmA AMIGA RUN 01 (1995)(G.R. Edizioni)(IT)[!][issue 1995-10][Aminet 7].iso
/
Aminet
/
dev
/
gcc
/
ixemul_src.lha
/
ixemul-41.0
/
library
/
ftruncate.c
< prev
next >
Wrap
C/C++ Source or Header
|
1995-05-28
|
2KB
|
86 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.
*
* ftruncate.c,v 1.1.1.1 1994/04/04 04:30:18 amiga Exp
*
* ftruncate.c,v
* Revision 1.1.1.1 1994/04/04 04:30:18 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"
#ifndef ACTION_SET_FILE_SIZE
#define ACTION_SET_FILE_SIZE 1022
#endif
int
ftruncate (int fd, long len)
{
struct file *f = u.u_ofile[fd];
int err, res;
int omask;
errno = EBADF;
KPRINTF (("&errno = %lx, errno = %ld\n", &errno, errno));
/* if this is an open fd */
if (fd >= 0 && fd < NOFILE && f)
{
if (f->f_type == DTYPE_FILE)
{
if (HANDLER_NIL (f))
{
errno = EINVAL;
KPRINTF (("&errno = %lx, errno = %ld\n", &errno, errno));
return -1;
}
err = 0;
omask = syscall (SYS_sigsetmask, ~0);
__get_file (f);
__wait_packet(&f->f_sp);
SendPacket3(f, __rwport,ACTION_SET_FILE_SIZE,
f->f_fh->fh_Arg1,
len, OFFSET_BEGINNING);
__wait_packet(&f->f_sp);
res = LastResult(f) != -1 ? 0 : -1;
if (res == -1) err = __ioerr_to_errno(LastError(f));
LastResult(f) = 0;
__release_file (f);
syscall (SYS_sigsetmask, omask);
errno = err;
KPRINTF (("&errno = %lx, errno = %ld\n", &errno, errno));
return res;
}
else
{
errno = ESPIPE;
KPRINTF (("&errno = %lx, errno = %ld\n", &errno, errno));
}
}
return -1;
}