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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 #include <dlfcn.h>
27 #include <pthread.h>
28 #include <string.h>
29 #include <sys/sem.h>
30
31 #include "libsun_ima.h"
32 #include "ima.h"
33 #include "ima-plugin.h"
34
35 extern int number_of_plugins;
36 extern int libMutex;
37 extern IMA_PLUGIN_INFO plugintable[IMA_MAX_NUM_PLUGINS];
38 extern void InitLibrary();
39
40 static void os_obtainmutex(int semid);
41 static void os_releasemutex(int semid);
42
SUN_IMA_SetTunableProperties(IMA_OID oid,ISCSI_TUNABLE_PARAM * param)43 IMA_API IMA_STATUS SUN_IMA_SetTunableProperties(
44 IMA_OID oid,
45 ISCSI_TUNABLE_PARAM *param) {
46 SUN_IMA_SetTunablePropertiesFn PassFunc;
47 IMA_UINT i;
48 IMA_STATUS status;
49
50 if (number_of_plugins == -1) {
51 InitLibrary();
52 }
53
54 if (param == NULL) {
55 return (IMA_ERROR_INVALID_PARAMETER);
56 }
57
58 if ((oid.objectType != IMA_OBJECT_TYPE_LHBA) &&
59 (oid.objectType != IMA_OBJECT_TYPE_TARGET)) {
60 return (IMA_ERROR_INCORRECT_OBJECT_TYPE);
61 }
62
63 os_obtainmutex(libMutex);
64 status = IMA_ERROR_OBJECT_NOT_FOUND;
65
66 for (i = 0; i < number_of_plugins; i++) {
67 if (plugintable[i].ownerId == oid.ownerId) {
68 status = IMA_ERROR_UNEXPECTED_OS_ERROR;
69 os_obtainmutex(plugintable[i].pluginMutex);
70 #ifdef SOLARIS
71 PassFunc = (SUN_IMA_SetTunablePropertiesFn)
72 dlsym(plugintable[i].hPlugin,
73 "SUN_IMA_SetTunableProperties");
74 #endif
75 if (PassFunc != NULL) {
76 status = PassFunc(oid, param);
77 }
78 os_releasemutex(plugintable[i].pluginMutex);
79 break;
80 }
81 }
82 os_releasemutex(libMutex);
83 return (status);
84 }
85
SUN_IMA_GetTunableProperties(IMA_OID oid,ISCSI_TUNABLE_PARAM * param)86 IMA_API IMA_STATUS SUN_IMA_GetTunableProperties(
87 IMA_OID oid,
88 ISCSI_TUNABLE_PARAM *param) {
89 SUN_IMA_GetTunablePropertiesFn PassFunc = NULL;
90 int i;
91 IMA_STATUS status;
92
93 if (number_of_plugins == -1) {
94 InitLibrary();
95 }
96
97 if (param == NULL) {
98 return (IMA_ERROR_INVALID_PARAMETER);
99 }
100
101 if ((oid.objectType != IMA_OBJECT_TYPE_LHBA) &&
102 (oid.objectType != IMA_OBJECT_TYPE_TARGET)) {
103 return (IMA_ERROR_INCORRECT_OBJECT_TYPE);
104 }
105
106 os_obtainmutex(libMutex);
107 status = IMA_ERROR_OBJECT_NOT_FOUND;
108 for (i = 0; i < number_of_plugins; i++) {
109 status = IMA_ERROR_UNEXPECTED_OS_ERROR;
110 if (plugintable[i].ownerId == oid.ownerId) {
111 os_obtainmutex(plugintable[i].pluginMutex);
112 #ifdef SOLARIS
113 PassFunc = (SUN_IMA_GetTunablePropertiesFn)
114 dlsym(plugintable[i].hPlugin,
115 "SUN_IMA_GetTunableProperties");
116 #endif
117 if (PassFunc != NULL) {
118 status = PassFunc(oid, param);
119 }
120 os_releasemutex(plugintable[i].pluginMutex);
121 break;
122 }
123 }
124 os_releasemutex(libMutex);
125 return (status);
126 }
127
128 static void
os_obtainmutex(int semid)129 os_obtainmutex(int semid)
130 {
131 struct sembuf sem_b;
132
133 sem_b.sem_num = 0;
134 sem_b.sem_op = -1;
135 sem_b.sem_flg = SEM_UNDO;
136 (void) semop(semid, &sem_b, 1);
137 }
138
139 static void
os_releasemutex(int semid)140 os_releasemutex(int semid)
141 {
142 struct sembuf sem_b;
143
144 sem_b.sem_num = 0;
145 sem_b.sem_op = 1;
146 sem_b.sem_flg = SEM_UNDO;
147 (void) semop(semid, &sem_b, 1);
148 }
149