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 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include "libscf_impl.h"
28
29 #include <assert.h>
30 #include <dlfcn.h>
31 #include <libintl.h>
32 #include <pthread.h>
33 #include <stdarg.h>
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <string.h>
37 #include <sys/machelf.h>
38 #include <thread.h>
39
40 #include <ucontext.h>
41
42 extern int ndebug;
43
44 static struct scf_error_info {
45 scf_error_t ei_code;
46 const char *ei_desc;
47 } scf_errors[] = {
48 {SCF_ERROR_NONE, "no error"},
49 {SCF_ERROR_NOT_BOUND, "handle not bound"},
50 {SCF_ERROR_NOT_SET, "cannot use unset argument"},
51 {SCF_ERROR_NOT_FOUND, "entity not found"},
52 {SCF_ERROR_TYPE_MISMATCH, "type does not match value"},
53 {SCF_ERROR_IN_USE, "cannot modify while in-use"},
54 {SCF_ERROR_CONNECTION_BROKEN, "connection to repository broken"},
55 {SCF_ERROR_INVALID_ARGUMENT, "invalid argument"},
56 {SCF_ERROR_NO_MEMORY, "no memory available"},
57 {SCF_ERROR_CONSTRAINT_VIOLATED, "required constraint not met"},
58 {SCF_ERROR_EXISTS, "object already exists"},
59 {SCF_ERROR_NO_SERVER, "repository server unavailable"},
60 {SCF_ERROR_NO_RESOURCES, "server has insufficient resources"},
61 {SCF_ERROR_PERMISSION_DENIED, "insufficient privileges for action"},
62 {SCF_ERROR_BACKEND_ACCESS, "backend refused access"},
63 {SCF_ERROR_BACKEND_READONLY, "backend is read-only"},
64 {SCF_ERROR_HANDLE_MISMATCH, "mismatched SCF handles"},
65 {SCF_ERROR_HANDLE_DESTROYED, "object bound to destroyed handle"},
66 {SCF_ERROR_VERSION_MISMATCH, "incompatible SCF version"},
67 {SCF_ERROR_DELETED, "object has been deleted"},
68 {SCF_ERROR_TEMPLATE_INVALID, "template data is invalid"},
69
70 {SCF_ERROR_CALLBACK_FAILED, "user callback function failed"},
71
72 {SCF_ERROR_INTERNAL, "internal error"}
73 };
74 #define SCF_NUM_ERRORS (sizeof (scf_errors) / sizeof (*scf_errors))
75
76 /* a SWAG just in case things get out of sync, we can notice */
77 #define LOOKS_VALID(e) \
78 ((e) >= scf_errors[0].ei_code && \
79 (e) < scf_errors[SCF_NUM_ERRORS - 1].ei_code + 10)
80
81 static scf_error_t _scf_fallback_error = SCF_ERROR_NONE;
82
83 #if defined(PTHREAD_ONCE_KEY_NP)
84
85 static pthread_key_t scf_error_key = PTHREAD_ONCE_KEY_NP;
86
87 int
scf_setup_error(void)88 scf_setup_error(void)
89 {
90 return (pthread_key_create_once_np(&scf_error_key, NULL) == 0);
91 }
92
93 #else /* PTHREAD_ONCE_KEY_NP */
94
95 /*
96 * This old code is here to enable the building of a native version
97 * of libscf.so when the build machine has not yet been upgraded
98 * to a version of libc that provides pthread_key_create_once_np().
99 * It should be deleted when solaris_nevada ships.
100 * This code is not MT-safe in a relaxed memory model.
101 */
102
103 static pthread_key_t scf_error_key = 0;
104
105 int
scf_setup_error(void)106 scf_setup_error(void)
107 {
108 static pthread_mutex_t scf_key_lock = PTHREAD_MUTEX_INITIALIZER;
109 static volatile int scf_error_key_setup = 0;
110
111 if (scf_error_key_setup == 0) {
112 (void) pthread_mutex_lock(&scf_key_lock);
113 if (scf_error_key_setup == 0) {
114 if (pthread_key_create(&scf_error_key, NULL) == 0)
115 scf_error_key_setup = 1;
116 }
117 (void) pthread_mutex_unlock(&scf_key_lock);
118 }
119
120 return (scf_error_key_setup == 1);
121 }
122
123 #endif /* PTHREAD_ONCE_KEY_NP */
124
125 int
scf_set_error(scf_error_t code)126 scf_set_error(scf_error_t code)
127 {
128 assert(LOOKS_VALID(code));
129
130 if (scf_setup_error())
131 (void) pthread_setspecific(scf_error_key, (void *)code);
132 else
133 _scf_fallback_error = code;
134 return (-1);
135 }
136
137 scf_error_t
scf_error(void)138 scf_error(void)
139 {
140 scf_error_t ret;
141
142 ret = (scf_error_t)pthread_getspecific(scf_error_key);
143 if (ret == 0)
144 return (_scf_fallback_error);
145 assert(LOOKS_VALID(ret));
146 return (ret);
147 }
148
149 const char *
scf_strerror(scf_error_t code)150 scf_strerror(scf_error_t code)
151 {
152 struct scf_error_info *cur, *end;
153
154 cur = scf_errors;
155 end = cur + SCF_NUM_ERRORS;
156
157 for (; cur < end; cur++)
158 if (code == cur->ei_code)
159 return (dgettext(TEXT_DOMAIN, cur->ei_desc));
160
161 return (dgettext(TEXT_DOMAIN, "unknown error"));
162 }
163
164 const char *
scf_get_msg(scf_msg_t msg)165 scf_get_msg(scf_msg_t msg)
166 {
167 switch (msg) {
168 case SCF_MSG_ARGTOOLONG:
169 return (dgettext(TEXT_DOMAIN,
170 "Argument '%s' is too long, ignoring\n"));
171
172 case SCF_MSG_PATTERN_NOINSTANCE:
173 return (dgettext(TEXT_DOMAIN,
174 "Pattern '%s' doesn't match any instances\n"));
175
176 case SCF_MSG_PATTERN_NOINSTSVC:
177 return (dgettext(TEXT_DOMAIN,
178 "Pattern '%s' doesn't match any instances or services\n"));
179
180 case SCF_MSG_PATTERN_NOSERVICE:
181 return (dgettext(TEXT_DOMAIN,
182 "Pattern '%s' doesn't match any services\n"));
183
184 case SCF_MSG_PATTERN_NOENTITY:
185 return (dgettext(TEXT_DOMAIN,
186 "Pattern '%s' doesn't match any entities\n"));
187
188 case SCF_MSG_PATTERN_MULTIMATCH:
189 return (dgettext(TEXT_DOMAIN,
190 "Pattern '%s' matches multiple instances:\n"));
191
192 case SCF_MSG_PATTERN_POSSIBLE:
193 return (dgettext(TEXT_DOMAIN, " %s\n"));
194
195 case SCF_MSG_PATTERN_LEGACY:
196 return (dgettext(TEXT_DOMAIN,
197 "Operation not supported for legacy service '%s'\n"));
198
199 default:
200 abort();
201 /* NOTREACHED */
202 }
203
204 }
205