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 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include <sys/modctl.h>
28 #include <sys/sunddi.h>
29
30 /* internal global data */
31 static struct modlmisc modlmisc = {
32 &mod_miscops, "bootdev misc module"
33 };
34
35 static struct modlinkage modlinkage = {
36 MODREV_1, (void *)&modlmisc, NULL
37 };
38
39 int
_init()40 _init()
41 {
42 return (mod_install(&modlinkage));
43 }
44
45 int
_fini()46 _fini()
47 {
48 return (mod_remove(&modlinkage));
49 }
50
51 int
_info(struct modinfo * modinfop)52 _info(struct modinfo *modinfop)
53 {
54 return (mod_info(&modlinkage, modinfop));
55 }
56
57 /*
58 * convert a prom device path to an equivalent path in /devices
59 * Does not deal with aliases. Does deal with pathnames which
60 * are not fully qualified. This routine is generalized
61 * to work across several flavors of OBP
62 */
63 int
i_promname_to_devname(char * prom_name,char * ret_buf)64 i_promname_to_devname(char *prom_name, char *ret_buf)
65 {
66 if (prom_name == NULL || ret_buf == NULL ||
67 (strlen(prom_name) >= MAXPATHLEN)) {
68 return (EINVAL);
69 }
70 if (i_ddi_prompath_to_devfspath(prom_name, ret_buf) != DDI_SUCCESS)
71 return (EINVAL);
72
73 return (0);
74 }
75
76 /*
77 * If bootstring contains a device path, we need to convert to a format
78 * the prom will understand. To do so, we convert the existing path to
79 * a prom-compatible path and return the value of new_path. If the
80 * caller specifies new_path as NULL, we allocate an appropriately
81 * sized new_path on behalf of the caller. If the caller invokes this
82 * function with new_path = NULL, they must do so from a context in
83 * which it is safe to perform a sleeping memory allocation.
84 *
85 * NOTE: Intel does not have a real PROM, so the implementation
86 * simply returns a copy of the string passed in.
87 */
88 char *
i_convert_boot_device_name(char * cur_path,char * new_path,size_t * len)89 i_convert_boot_device_name(char *cur_path, char *new_path, size_t *len)
90 {
91 if (new_path != NULL) {
92 (void) snprintf(new_path, *len, "%s", cur_path);
93 return (new_path);
94 } else {
95 *len = strlen(cur_path) + 1;
96 new_path = kmem_alloc(*len, KM_SLEEP);
97 (void) snprintf(new_path, *len, "%s", cur_path);
98 return (new_path);
99 }
100 }
101