1 /*
2 *
3 * CDDL HEADER START
4 *
5 * The contents of this file are subject to the terms of the
6 * Common Development and Distribution License (the "License").
7 * You may not use this file except in compliance 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
24 /*
25 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
26 * Use is subject to license terms.
27 *
28 */
29
30
31 #include <stdlib.h>
32 #include <unistd.h>
33 #include <strings.h>
34 #include <libscf.h>
35
36 #define MAX_TRY 15
37 static boolean_t fs_temporarily_enabled = B_FALSE;
38 char svm_core_svcs[] = "system/filesystem/local:default";
39
40 /*
41 * Name: enable_local_fs
42 * Description: If the SMF service system/filesystem/local:default is not
43 * enabled, then this function enables the service, so that,
44 * all the local filesystems are mounted.
45 * Arguments: None
46 * Returns: B_TRUE on success; B_FALSE on error.
47 */
48 boolean_t
enable_local_fs(void)49 enable_local_fs(void)
50 {
51 char *cur_smf_state;
52 int i;
53 boolean_t fs_enabled_here = B_FALSE;
54
55 if (fs_temporarily_enabled) {
56 return (B_TRUE);
57 }
58
59 if ((cur_smf_state = smf_get_state(svm_core_svcs)) != NULL) {
60 if (strcmp(cur_smf_state, SCF_STATE_STRING_DISABLED) == 0) {
61 if (smf_enable_instance(svm_core_svcs, SMF_TEMPORARY)
62 != 0) {
63 free(cur_smf_state);
64 return (B_FALSE);
65 }
66
67 fs_enabled_here = B_TRUE;
68
69 } else if (strcmp(cur_smf_state, SCF_STATE_STRING_ONLINE)
70 == 0) {
71 free(cur_smf_state);
72 return (B_TRUE);
73 } else if (strcmp(cur_smf_state, SCF_STATE_STRING_OFFLINE)
74 != 0) {
75 free(cur_smf_state);
76 return (B_FALSE);
77 }
78
79 free(cur_smf_state);
80
81 } else {
82 return (B_FALSE);
83 }
84
85 for (i = 0; i < MAX_TRY; i++) {
86 if ((cur_smf_state = smf_get_state(svm_core_svcs)) != NULL) {
87 if (strcmp(cur_smf_state, SCF_STATE_STRING_ONLINE)
88 == 0) {
89 free(cur_smf_state);
90 if (fs_enabled_here) {
91 fs_temporarily_enabled = B_TRUE;
92 }
93 return (B_TRUE);
94 } else if ((strcmp(cur_smf_state,
95 SCF_STATE_STRING_OFFLINE) == 0) ||
96 (strcmp(cur_smf_state, SCF_STATE_STRING_DISABLED) == 0)) {
97 (void) sleep(1);
98 free(cur_smf_state);
99 } else {
100 free(cur_smf_state);
101 return (B_FALSE);
102 }
103 } else {
104 return (B_FALSE);
105 }
106 }
107
108 return (B_FALSE);
109 }
110
111 /*
112 * Name: restore_local_fs
113 * Description: If the SMF service system/filesystem/local:default was
114 * enabled using enable_local_fs(), then this function disables
115 * the service.
116 * Arguments: None
117 * Returns: B_TRUE on success; B_FALSE on error.
118 */
119 boolean_t
restore_local_fs(void)120 restore_local_fs(void)
121 {
122 int i;
123 char *cur_smf_state;
124
125 if (!fs_temporarily_enabled) {
126 return (B_TRUE);
127 }
128
129 if (smf_disable_instance(svm_core_svcs, SMF_TEMPORARY) != 0) {
130 return (B_FALSE);
131 }
132
133 for (i = 0; i < MAX_TRY; i++) {
134 if ((cur_smf_state = smf_get_state(svm_core_svcs)) != NULL) {
135 if (strcmp(cur_smf_state, SCF_STATE_STRING_DISABLED)
136 == 0) {
137 fs_temporarily_enabled = B_FALSE;
138 free(cur_smf_state);
139 break;
140 }
141 (void) sleep(1);
142
143 free(cur_smf_state);
144 } else {
145 return (B_FALSE);
146 }
147 }
148
149 return (!fs_temporarily_enabled);
150 }
151