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 /* 24 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 */ 27 28 #pragma ident "%Z%%M% %I% %E% SMI" 29 30 /* 31 * Define and initialize MT data for libnsl. 32 * The _libnsl_lock_init() function below is the library's .init handler. 33 */ 34 35 #include "mt.h" 36 #include "rpc_mt.h" 37 #include <unistd.h> 38 #include <rpc/rpc.h> 39 #include <sys/time.h> 40 #include <stdlib.h> 41 #include <syslog.h> 42 43 extern mutex_t _ti_userlock; 44 45 sigset_t fillset; /* from sigfillset() */ 46 47 rwlock_t svc_lock; /* protects the services list (svc.c) */ 48 rwlock_t svc_fd_lock; /* protects svc_fdset and the xports[] array */ 49 rwlock_t rpcbaddr_cache_lock; /* protects the RPCBIND address cache */ 50 static rwlock_t *rwlock_table[] = { 51 &svc_lock, 52 &svc_fd_lock, 53 &rpcbaddr_cache_lock 54 }; 55 56 mutex_t authdes_lock; /* protects authdes cache (svcauth_des.c) */ 57 mutex_t authnone_lock; /* auth_none.c serialization */ 58 mutex_t authsvc_lock; /* protects the Auths list (svc_auth.c) */ 59 mutex_t clntraw_lock; /* clnt_raw.c serialization */ 60 mutex_t dname_lock; /* domainname and domain_fd (getdname.c) */ 61 /* and default_domain (rpcdname.c) */ 62 mutex_t dupreq_lock; /* dupreq variables (svc_dg.c) */ 63 mutex_t keyserv_lock; /* protects first_time and hostname */ 64 /* (key_call.c) */ 65 mutex_t libnsl_trace_lock; /* serializes rpc_trace() (rpc_trace.c) */ 66 mutex_t loopnconf_lock; /* loopnconf (rpcb_clnt.c) */ 67 mutex_t ops_lock; /* serializes ops initializations */ 68 mutex_t portnum_lock; /* protects ``port'' static in bindresvport() */ 69 mutex_t proglst_lock; /* protects proglst list (svc_simple.c) */ 70 mutex_t rpcsoc_lock; /* serializes clnt_com_create() (rpc_soc.c) */ 71 mutex_t svcraw_lock; /* svc_raw.c serialization */ 72 mutex_t tsd_lock; /* protects TSD key creation */ 73 mutex_t xprtlist_lock; /* xprtlist (svc_generic.c) */ 74 mutex_t serialize_pkey; /* serializes calls to public key routines */ 75 mutex_t svc_thr_mutex; /* protects thread related variables */ 76 mutex_t svc_mutex; /* protects service handle free lists */ 77 mutex_t svc_exit_mutex; /* used for clean mt exit */ 78 79 static mutex_t *mutex_table[] = { 80 &authdes_lock, 81 &authnone_lock, 82 &authsvc_lock, 83 &clntraw_lock, 84 &dname_lock, 85 &dupreq_lock, 86 &keyserv_lock, 87 &libnsl_trace_lock, 88 &loopnconf_lock, 89 &ops_lock, 90 &portnum_lock, 91 &proglst_lock, 92 &rpcsoc_lock, 93 &svcraw_lock, 94 &tsd_lock, 95 &xprtlist_lock, 96 &serialize_pkey, 97 &svc_thr_mutex, 98 &svc_mutex, 99 &svc_exit_mutex 100 }; 101 102 cond_t svc_thr_fdwait; /* threads wait on this for work */ 103 104 static void 105 _libnsl_prefork() 106 { 107 (void) mutex_lock(&_ti_userlock); 108 } 109 110 static void 111 _libnsl_child_atfork() 112 { 113 (void) mutex_unlock(&_ti_userlock); 114 } 115 116 static void 117 _libnsl_parent_atfork() 118 { 119 (void) mutex_unlock(&_ti_userlock); 120 } 121 122 #pragma init(_libnsl_lock_init) 123 124 void 125 _libnsl_lock_init() 126 { 127 int i; 128 129 (void) sigfillset(&fillset); 130 131 for (i = 0; i < (sizeof (mutex_table) / sizeof (mutex_table[0])); i++) 132 (void) mutex_init(mutex_table[i], 0, (void *) 0); 133 134 for (i = 0; i < (sizeof (rwlock_table) / sizeof (rwlock_table[0])); i++) 135 (void) rwlock_init(rwlock_table[i], 0, (void *) 0); 136 137 (void) cond_init(&svc_thr_fdwait, USYNC_THREAD, 0); 138 139 /* 140 * There is no way to unregister these atfork functions, 141 * but we don't need to. The dynamic linker and libc take 142 * care of unregistering them if/when the library is unloaded. 143 */ 144 (void) pthread_atfork(_libnsl_prefork, 145 _libnsl_parent_atfork, _libnsl_child_atfork); 146 } 147 148 #pragma fini(_libnsl_fini) 149 150 void _key_call_fini(void); 151 152 void 153 _libnsl_fini() 154 { 155 _key_call_fini(); 156 } 157 158 #undef rpc_createerr 159 160 struct rpc_createerr rpc_createerr; 161 162 struct rpc_createerr * 163 __rpc_createerr() 164 { 165 static pthread_key_t rce_key = 0; 166 struct rpc_createerr *rce_addr; 167 168 if (thr_main()) 169 return (&rpc_createerr); 170 rce_addr = thr_get_storage(&rce_key, sizeof (*rce_addr), free); 171 if (rce_addr == NULL) { 172 syslog(LOG_ERR, "__rpc_createerr : out of memory."); 173 return (&rpc_createerr); 174 } 175 return (rce_addr); 176 } 177 178 #undef rpc_callerr 179 180 struct rpc_err rpc_callerr; 181 182 struct rpc_err * 183 __rpc_callerr(void) 184 { 185 static pthread_key_t rpc_callerr_key = 0; 186 struct rpc_err *tsd = 0; 187 188 if (thr_main()) 189 return (&rpc_callerr); 190 tsd = thr_get_storage(&rpc_callerr_key, sizeof (struct rpc_err), free); 191 if (tsd == NULL) { 192 syslog(LOG_ERR, "__rpc_callerr : out of memory."); 193 return (&rpc_callerr); 194 } 195 return (tsd); 196 } 197