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 2007 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 "libscf_impl.h" 30 31 #include <assert.h> 32 #include <dlfcn.h> 33 #include <libintl.h> 34 #include <pthread.h> 35 #include <stdarg.h> 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <string.h> 39 #include <sys/machelf.h> 40 #include <thread.h> 41 42 #define walkcontext _walkcontext /* work around 4743525 */ 43 #include <ucontext.h> 44 45 extern int ndebug; 46 47 static struct scf_error_info { 48 scf_error_t ei_code; 49 const char *ei_desc; 50 } scf_errors[] = { 51 {SCF_ERROR_NONE, "no error"}, 52 {SCF_ERROR_NOT_BOUND, "handle not bound"}, 53 {SCF_ERROR_NOT_SET, "cannot use unset argument"}, 54 {SCF_ERROR_NOT_FOUND, "entity not found"}, 55 {SCF_ERROR_TYPE_MISMATCH, "type does not match value"}, 56 {SCF_ERROR_IN_USE, "cannot modify while in-use"}, 57 {SCF_ERROR_CONNECTION_BROKEN, "connection to repository broken"}, 58 {SCF_ERROR_INVALID_ARGUMENT, "invalid argument"}, 59 {SCF_ERROR_NO_MEMORY, "no memory available"}, 60 {SCF_ERROR_CONSTRAINT_VIOLATED, "required constraint not met"}, 61 {SCF_ERROR_EXISTS, "object already exists"}, 62 {SCF_ERROR_NO_SERVER, "repository server unavailable"}, 63 {SCF_ERROR_NO_RESOURCES, "server has insufficient resources"}, 64 {SCF_ERROR_PERMISSION_DENIED, "insufficient privileges for action"}, 65 {SCF_ERROR_BACKEND_ACCESS, "backend refused access"}, 66 {SCF_ERROR_BACKEND_READONLY, "backend is read-only"}, 67 {SCF_ERROR_HANDLE_MISMATCH, "mismatched SCF handles"}, 68 {SCF_ERROR_HANDLE_DESTROYED, "object bound to destroyed handle"}, 69 {SCF_ERROR_VERSION_MISMATCH, "incompatible SCF version"}, 70 {SCF_ERROR_DELETED, "object has been deleted"}, 71 72 {SCF_ERROR_CALLBACK_FAILED, "user callback function failed"}, 73 74 {SCF_ERROR_INTERNAL, "internal error"} 75 }; 76 #define SCF_NUM_ERRORS (sizeof (scf_errors) / sizeof (*scf_errors)) 77 78 /* a SWAG just in case things get out of sync, we can notice */ 79 #define LOOKS_VALID(e) \ 80 ((e) >= scf_errors[0].ei_code && \ 81 (e) < scf_errors[SCF_NUM_ERRORS - 1].ei_code + 10) 82 83 static scf_error_t _scf_fallback_error = SCF_ERROR_NONE; 84 85 #if defined(PTHREAD_ONCE_KEY_NP) 86 87 static pthread_key_t scf_error_key = PTHREAD_ONCE_KEY_NP; 88 89 int 90 scf_setup_error(void) 91 { 92 return (pthread_key_create_once_np(&scf_error_key, NULL) == 0); 93 } 94 95 #else /* PTHREAD_ONCE_KEY_NP */ 96 97 /* 98 * This old code is here to enable the building of a native version 99 * of libscf.so when the build machine has not yet been upgraded 100 * to a version of libc that provides pthread_key_create_once_np(). 101 * It should be deleted when solaris_nevada ships. 102 * This code is not MT-safe in a relaxed memory model. 103 */ 104 105 static pthread_key_t scf_error_key = 0; 106 107 int 108 scf_setup_error(void) 109 { 110 static pthread_mutex_t scf_key_lock = PTHREAD_MUTEX_INITIALIZER; 111 static volatile int scf_error_key_setup = 0; 112 113 if (scf_error_key_setup == 0) { 114 (void) pthread_mutex_lock(&scf_key_lock); 115 if (scf_error_key_setup == 0) { 116 if (pthread_key_create(&scf_error_key, NULL) == 0) 117 scf_error_key_setup = 1; 118 } 119 (void) pthread_mutex_unlock(&scf_key_lock); 120 } 121 122 return (scf_error_key_setup == 1); 123 } 124 125 #endif /* PTHREAD_ONCE_KEY_NP */ 126 127 int 128 scf_set_error(scf_error_t code) 129 { 130 assert(LOOKS_VALID(code)); 131 132 if (scf_setup_error()) 133 (void) pthread_setspecific(scf_error_key, (void *)code); 134 else 135 _scf_fallback_error = code; 136 return (-1); 137 } 138 139 scf_error_t 140 scf_error(void) 141 { 142 scf_error_t ret; 143 144 ret = (scf_error_t)pthread_getspecific(scf_error_key); 145 if (ret == 0) 146 return (_scf_fallback_error); 147 assert(LOOKS_VALID(ret)); 148 return (ret); 149 } 150 151 const char * 152 scf_strerror(scf_error_t code) 153 { 154 struct scf_error_info *cur, *end; 155 156 cur = scf_errors; 157 end = cur + SCF_NUM_ERRORS; 158 159 for (; cur < end; cur++) 160 if (code == cur->ei_code) 161 return (dgettext(TEXT_DOMAIN, cur->ei_desc)); 162 163 return (dgettext(TEXT_DOMAIN, "unknown error")); 164 } 165 166 const char * 167 scf_get_msg(scf_msg_t msg) 168 { 169 switch (msg) { 170 case SCF_MSG_ARGTOOLONG: 171 return (dgettext(TEXT_DOMAIN, 172 "Argument '%s' is too long, ignoring\n")); 173 174 case SCF_MSG_PATTERN_NOINSTANCE: 175 return (dgettext(TEXT_DOMAIN, 176 "Pattern '%s' doesn't match any instances\n")); 177 178 case SCF_MSG_PATTERN_NOINSTSVC: 179 return (dgettext(TEXT_DOMAIN, 180 "Pattern '%s' doesn't match any instances or services\n")); 181 182 case SCF_MSG_PATTERN_NOSERVICE: 183 return (dgettext(TEXT_DOMAIN, 184 "Pattern '%s' doesn't match any services\n")); 185 186 case SCF_MSG_PATTERN_NOENTITY: 187 return (dgettext(TEXT_DOMAIN, 188 "Pattern '%s' doesn't match any entities\n")); 189 190 case SCF_MSG_PATTERN_MULTIMATCH: 191 return (dgettext(TEXT_DOMAIN, 192 "Pattern '%s' matches multiple instances:\n")); 193 194 case SCF_MSG_PATTERN_POSSIBLE: 195 return (dgettext(TEXT_DOMAIN, " %s\n")); 196 197 case SCF_MSG_PATTERN_LEGACY: 198 return (dgettext(TEXT_DOMAIN, 199 "Operation not supported for legacy service '%s'\n")); 200 201 default: 202 abort(); 203 /* NOTREACHED */ 204 } 205 206 } 207