diff -urN uae-0.8.29-orig/src/fsdb_unix.c uae-0.8.29/src/fsdb_unix.c
--- uae-0.8.29-orig/src/fsdb_unix.c	2001-02-26 00:21:48 +0900
+++ uae-0.8.29/src/fsdb_unix.c	2009-06-21 11:56:51 +0900
@@ -36,7 +36,11 @@
     aino->dir = S_ISDIR (statbuf.st_mode) ? 1 : 0;
     aino->amigaos_mode = ((S_IXUSR & statbuf.st_mode ? 0 : A_FIBF_EXECUTE)
 			  | (S_IWUSR & statbuf.st_mode ? 0 : A_FIBF_WRITE)
-			  | (S_IRUSR & statbuf.st_mode ? 0 : A_FIBF_READ));
+			  | (S_IRUSR & statbuf.st_mode ? 0 : A_FIBF_READ)
+			  | (S_ISGID & statbuf.st_mode ? A_FIBF_DELETE : 0)
+			  | (S_ISVTX & statbuf.st_mode ? A_FIBF_PURE : 0)
+			  | (S_ISUID & statbuf.st_mode ? A_FIBF_SCRIPT : 0));
+    
 }
 
 int fsdb_set_file_attrs (a_inode *aino, int mask)
@@ -65,6 +69,21 @@
 	else
 	    mode |= S_IXUSR;
 
+	if (mask & A_FIBF_DELETE)
+	    mode |= S_ISGID;
+	else
+	    mode &= ~S_ISGID;
+
+	if (mask & A_FIBF_PURE)
+	    mode |= S_ISVTX;
+	else
+	    mode &= ~S_ISVTX;
+
+	if (mask & A_FIBF_SCRIPT)
+	    mode |= S_ISUID;
+	else
+	    mode &= ~S_ISUID;
+
 	chmod (aino->nname, mode);
     }
 
@@ -79,7 +98,7 @@
 {
     if (aino->dir)
 	return aino->amigaos_mode == 0;
-    return (aino->amigaos_mode & (A_FIBF_DELETE | A_FIBF_SCRIPT | A_FIBF_PURE)) == 0;
+    return 1;
 }
 
 char *fsdb_create_unique_nname (a_inode *base, const char *suggestion)