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- /*
- * 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);
- SendPacket3(f, __srwport,ACTION_SET_FILE_SIZE,
- f->f_fh->fh_Arg1,
- len, OFFSET_BEGINNING);
- __wait_sync_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;
- }
-