1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate  * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate  *
4*7c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate  * with the License.
8*7c478bd9Sstevel@tonic-gate  *
9*7c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate  * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate  *
14*7c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate  *
20*7c478bd9Sstevel@tonic-gate  * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate  */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate  * Copyright (c) 1994-1995, by Sun Microsystems, Inc.
24*7c478bd9Sstevel@tonic-gate  * All rights reserved.
25*7c478bd9Sstevel@tonic-gate  */
26*7c478bd9Sstevel@tonic-gate 
27*7c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
28*7c478bd9Sstevel@tonic-gate 
29*7c478bd9Sstevel@tonic-gate #include <sys/param.h>
30*7c478bd9Sstevel@tonic-gate #include <sys/modctl.h>
31*7c478bd9Sstevel@tonic-gate #include <sys/salib.h>
32*7c478bd9Sstevel@tonic-gate 
33*7c478bd9Sstevel@tonic-gate #include <sys/platnames.h>
34*7c478bd9Sstevel@tonic-gate 
35*7c478bd9Sstevel@tonic-gate /*
36*7c478bd9Sstevel@tonic-gate  * Supplied by modpath.c
37*7c478bd9Sstevel@tonic-gate  *
38*7c478bd9Sstevel@tonic-gate  * Making these externs here allows all sparc machines to share
39*7c478bd9Sstevel@tonic-gate  * mod_path_uname_m().
40*7c478bd9Sstevel@tonic-gate  */
41*7c478bd9Sstevel@tonic-gate extern char *default_name;
42*7c478bd9Sstevel@tonic-gate extern char *default_path;
43*7c478bd9Sstevel@tonic-gate 
44*7c478bd9Sstevel@tonic-gate /*
45*7c478bd9Sstevel@tonic-gate  * Is path "/platform/"dir"/" ?
46*7c478bd9Sstevel@tonic-gate  */
47*7c478bd9Sstevel@tonic-gate static int
platcmp(char * path,char * dir)48*7c478bd9Sstevel@tonic-gate platcmp(char *path, char *dir)
49*7c478bd9Sstevel@tonic-gate {
50*7c478bd9Sstevel@tonic-gate 	static char prefix[] = "/platform/";
51*7c478bd9Sstevel@tonic-gate 	static char suffix[] = "/kernel";
52*7c478bd9Sstevel@tonic-gate 	int len;
53*7c478bd9Sstevel@tonic-gate 
54*7c478bd9Sstevel@tonic-gate 	if (strncmp(path, prefix, sizeof (prefix) - 1) != 0)
55*7c478bd9Sstevel@tonic-gate 		return (0);
56*7c478bd9Sstevel@tonic-gate 	len = strlen(dir);
57*7c478bd9Sstevel@tonic-gate 	path += sizeof (prefix) - 1;
58*7c478bd9Sstevel@tonic-gate 	if (strncmp(path, dir, len) != 0)
59*7c478bd9Sstevel@tonic-gate 		return (0);
60*7c478bd9Sstevel@tonic-gate 	path += len;
61*7c478bd9Sstevel@tonic-gate 	if (strcmp(path, suffix) != 0)
62*7c478bd9Sstevel@tonic-gate 		return (0);
63*7c478bd9Sstevel@tonic-gate 	return (1);
64*7c478bd9Sstevel@tonic-gate }
65*7c478bd9Sstevel@tonic-gate 
66*7c478bd9Sstevel@tonic-gate /*
67*7c478bd9Sstevel@tonic-gate  * This function provides a hook for enhancing the module_path.
68*7c478bd9Sstevel@tonic-gate  */
69*7c478bd9Sstevel@tonic-gate /*ARGSUSED*/
70*7c478bd9Sstevel@tonic-gate void
mod_path_uname_m(char * mod_path,char * ia_name)71*7c478bd9Sstevel@tonic-gate mod_path_uname_m(char *mod_path, char *ia_name)
72*7c478bd9Sstevel@tonic-gate {
73*7c478bd9Sstevel@tonic-gate 
74*7c478bd9Sstevel@tonic-gate 	if (ia_name == NULL)
75*7c478bd9Sstevel@tonic-gate 		return;
76*7c478bd9Sstevel@tonic-gate 
77*7c478bd9Sstevel@tonic-gate 	/*
78*7c478bd9Sstevel@tonic-gate 	 * If we found the kernel in the default dir, prepend the ia_name
79*7c478bd9Sstevel@tonic-gate 	 * directory (e.g. /platform/SUNW,foo/kernel) to the mod_path unless
80*7c478bd9Sstevel@tonic-gate 	 * ia_name is the same as the default dir.  This can happen if we
81*7c478bd9Sstevel@tonic-gate 	 * found the kernel via the "compatible" property.
82*7c478bd9Sstevel@tonic-gate 	 *
83*7c478bd9Sstevel@tonic-gate 	 * If we found the kernel in the ia_name dir, append the default
84*7c478bd9Sstevel@tonic-gate 	 * directory to the modpath.
85*7c478bd9Sstevel@tonic-gate 	 *
86*7c478bd9Sstevel@tonic-gate 	 * If neither of the above are true, we were given a specific kernel
87*7c478bd9Sstevel@tonic-gate 	 * to boot, so we leave things well enough alone.
88*7c478bd9Sstevel@tonic-gate 	 */
89*7c478bd9Sstevel@tonic-gate 	if (platcmp(mod_path, default_name)) {
90*7c478bd9Sstevel@tonic-gate 		if (strcmp(ia_name, default_name) != 0) {
91*7c478bd9Sstevel@tonic-gate 			char tmp[MOD_MAXPATH];
92*7c478bd9Sstevel@tonic-gate 
93*7c478bd9Sstevel@tonic-gate 			(void) strcpy(tmp, mod_path);
94*7c478bd9Sstevel@tonic-gate 			(void) strcpy(mod_path, "/platform/");
95*7c478bd9Sstevel@tonic-gate 			(void) strcat(mod_path, ia_name);
96*7c478bd9Sstevel@tonic-gate 			(void) strcat(mod_path, "/kernel ");
97*7c478bd9Sstevel@tonic-gate 			(void) strcat(mod_path, tmp);
98*7c478bd9Sstevel@tonic-gate 		}
99*7c478bd9Sstevel@tonic-gate 	} else if (platcmp(mod_path, ia_name))
100*7c478bd9Sstevel@tonic-gate 		(void) strcat(mod_path, default_path);
101*7c478bd9Sstevel@tonic-gate }
102