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 2004 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #pragma ident "%Z%%M% %I% %E% SMI"
28
29 #include <fcntl.h>
30 #include <libdevinfo.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <sys/dkio.h>
34 #include <sys/sunddi.h>
35 #include <sys/types.h>
36 #include <unistd.h>
37
38 #include "libdiskmgt.h"
39 #include "disks_private.h"
40
41 static int get_status(disk_t *diskp, int fd, nvlist_t *attrs);
42
43 descriptor_t **
alias_get_assoc_descriptors(descriptor_t * desc,dm_desc_type_t type,int * errp)44 alias_get_assoc_descriptors(descriptor_t *desc, dm_desc_type_t type,
45 int *errp)
46 {
47 switch (type) {
48 case DM_DRIVE:
49 return (drive_get_assocs(desc, errp));
50 }
51
52 *errp = EINVAL;
53 return (NULL);
54 }
55
56 nvlist_t *
alias_get_attributes(descriptor_t * dp,int * errp)57 alias_get_attributes(descriptor_t *dp, int *errp)
58 {
59 alias_t *ap;
60 nvlist_t *attrs = NULL;
61
62 /* Find the alias for this descriptor */
63
64 *errp = ENODEV;
65 for (ap = dp->p.disk->aliases; ap != NULL; ap = ap->next) {
66 if (libdiskmgt_str_eq(dp->name, ap->alias)) {
67 /* we found the alias for this descriptor */
68
69 if (nvlist_alloc(&attrs, NVATTRS, 0) != 0) {
70 *errp = ENOMEM;
71 return (NULL);
72 }
73
74 if (ap->target >= 0) {
75 if (nvlist_add_uint32(attrs, DM_LUN, ap->lun) != 0) {
76 nvlist_free(attrs);
77 *errp = ENOMEM;
78 return (NULL);
79 }
80
81 if (nvlist_add_uint32(attrs, DM_TARGET, ap->target) != 0) {
82 nvlist_free(attrs);
83 *errp = ENOMEM;
84 return (NULL);
85 }
86 }
87
88 if (ap->wwn != NULL) {
89 if (nvlist_add_string(attrs, DM_WWN, ap->wwn) != 0) {
90 nvlist_free(attrs);
91 *errp = ENOMEM;
92 return (NULL);
93 }
94 }
95
96 if (ap->devpaths != NULL) {
97 /* get the status for this alias */
98 int fd;
99
100 fd = open(ap->devpaths->devpath, O_RDONLY|O_NDELAY);
101
102 if ((*errp = get_status(dp->p.disk, fd, attrs)) != 0) {
103 nvlist_free(attrs);
104 attrs = NULL;
105 }
106
107 if (fd >= 0) {
108 (void) close(fd);
109 }
110 }
111
112 *errp = 0;
113 break;
114 }
115 }
116
117 return (attrs);
118 }
119
120 descriptor_t *
alias_get_descriptor_by_name(char * name,int * errp)121 alias_get_descriptor_by_name(char *name, int *errp)
122 {
123 descriptor_t **aliases;
124 int i;
125 descriptor_t *alias = NULL;
126
127 aliases = cache_get_descriptors(DM_ALIAS, errp);
128 if (*errp != 0) {
129 return (NULL);
130 }
131
132 for (i = 0; aliases[i]; i++) {
133 if (libdiskmgt_str_eq(name, aliases[i]->name)) {
134 alias = aliases[i];
135 } else {
136 /* clean up the unused descriptors */
137 cache_free_descriptor(aliases[i]);
138 }
139 }
140 free(aliases);
141
142 if (alias == NULL) {
143 *errp = ENODEV;
144 }
145
146 return (alias);
147 }
148
149 /* ARGSUSED */
150 descriptor_t **
alias_get_descriptors(int filter[],int * errp)151 alias_get_descriptors(int filter[], int *errp)
152 {
153 return (cache_get_descriptors(DM_ALIAS, errp));
154 }
155
156 char *
alias_get_name(descriptor_t * desc)157 alias_get_name(descriptor_t *desc)
158 {
159 return (desc->name);
160 }
161
162 /* ARGSUSED */
163 nvlist_t *
alias_get_stats(descriptor_t * dp,int stat_type,int * errp)164 alias_get_stats(descriptor_t *dp, int stat_type, int *errp)
165 {
166 /* There are no stat types defined for aliases */
167 *errp = EINVAL;
168 return (NULL);
169 }
170
171 int
alias_make_descriptors()172 alias_make_descriptors()
173 {
174 int error;
175 disk_t *dp;
176
177 dp = cache_get_disklist();
178 while (dp != NULL) {
179 alias_t *ap;
180
181 ap = dp->aliases;
182 while (ap != NULL) {
183 if (ap->alias != NULL) {
184 cache_load_desc(DM_ALIAS, dp, ap->alias, NULL, &error);
185 if (error != 0) {
186 return (error);
187 }
188 }
189 ap = ap->next;
190 }
191 dp = dp->next;
192 }
193
194 return (0);
195 }
196
197 static int
get_status(disk_t * diskp,int fd,nvlist_t * attrs)198 get_status(disk_t *diskp, int fd, nvlist_t *attrs)
199 {
200 struct dk_minfo minfo;
201
202 /* Make sure media is inserted and spun up. */
203 if (fd >= 0 && media_read_info(fd, &minfo)) {
204
205 if (nvlist_add_uint32(attrs, DM_STATUS, DM_DISK_UP) != 0) {
206 return (ENOMEM);
207 }
208
209 } else {
210 /* Not ready, so either no media or dead. */
211
212 if (diskp->removable) {
213 /* This is a removable drive with no media. */
214 if (nvlist_add_uint32(attrs, DM_STATUS, DM_DISK_UP) != 0) {
215 return (ENOMEM);
216 }
217 } else {
218 /* not removable, so must be dead */
219 if (nvlist_add_uint32(attrs, DM_STATUS, DM_DISK_DOWN) != 0) {
220 return (ENOMEM);
221 }
222 }
223 }
224
225 return (0);
226 }
227