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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.
- *
- * unlink.c,v 1.1.1.1 1994/04/04 04:30:37 amiga Exp
- *
- * unlink.c,v
- * Revision 1.1.1.1 1994/04/04 04:30:37 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"
- #include <string.h>
-
- static int
- __delete_func (struct StandardPacket *sp, struct MsgPort *handler,
- BPTR parent_lock,
- BSTR name,
- void *dummy, int *no_error)
- {
- sp->sp_Pkt.dp_Type = ACTION_DELETE_OBJECT;
- sp->sp_Pkt.dp_Arg1 = parent_lock;
- sp->sp_Pkt.dp_Arg2 = name;
-
- PutPacket (handler, sp);
- __wait_sync_packet (sp);
-
- *no_error = sp->sp_Pkt.dp_Res1 == -1;
-
- /* stop if we failed because of symlink - reference */
- return 0;
- }
-
- int
- unlink (char *name)
- {
- int err;
- struct file *fp;
- int result;
- struct stat st;
-
- result = 0;
-
- if (syscall(SYS_stat, name, &st) == 0 && (st.st_mode & S_IWUSR) == 0)
- if (syscall(SYS_chmod, name, st.st_mode | S_IWUSR))
- return -1;
- /* first try to normally delete the file, if we get an
- * 'object in use' error, we'll try another way out.. */
- if (__plock (name, __delete_func, 0)) goto ret;
-
- /* so there was an error.. */
- err = IoErr();
- if (err == ERROR_OBJECT_IN_USE)
- {
- /* check whether the name is an absolute filename, if yes, we
- * can walk thru our filetab to see, whether WE have this file
- * open, and set its unlink-flag, if not, return the error */
-
- /* if we fully and consistent allow Unix-pathnames, we can test
- * for a leading '/' too. */
- if (index(name, ':') || ((ix.ix_flags & ix_translate_slash) && name[1] && name[0] == '/'))
- {
- ix_lock_base();
- for (fp = ix.ix_file_tab; fp < ix.ix_fileNFILE; fp++)
- if (fp->f_count && fp->f_name && !strcmp(fp->f_name, name))
- {
- fp->f_flags |= FUNLINK;
- ix_unlock_base();
- goto ret;
- }
- ix_unlock_base();
- }
- }
- errno = __ioerr_to_errno(err);
- KPRINTF (("&errno = %lx, errno = %ld\n", &errno, errno));
- result = -1;
-
- ret:
- return result;
- }
-