xref: /titanic_41/usr/src/psm/promif/ieee1275/common/prom_outpath.c (revision fcf3ce441efd61da9bb2884968af01cb7c1452cc)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright (c) 1991-1994, by Sun Microsystems, Inc.
24  * All rights reserved.
25  */
26 
27 #pragma	ident	"%Z%%M%	%I%	%E% SMI"
28 
29 #include <sys/promif.h>
30 #include <sys/promimpl.h>
31 
32 static char *stdoutpath;
33 static char buffer[OBP_MAXPATHLEN];
34 
35 char *
36 prom_stdoutpath(void)
37 {
38 	ihandle_t	istdout;
39 
40 	if (stdoutpath != (char *)0)
41 		return (stdoutpath);
42 
43 	istdout = prom_stdout_ihandle();
44 
45 	if (istdout != (ihandle_t)-1)
46 		if (prom_ihandle_to_path(istdout, buffer,
47 		    OBP_MAXPATHLEN - 1) > 0)
48 			return (stdoutpath = buffer);
49 	return ((char *)0);
50 }
51