lib/libc/rpc/mt_misc.c

   1 /*      $NetBSD: mt_misc.c,v 1.9 2012/03/20 17:14:50 matt Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2004 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Frank van der Linden.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*
  33  *      Define and initialize MT data for libnsl.
  34  *      The _libnsl_lock_init() function below is the library's .init handler.
  35  */
  36
  37 /* #pragma ident        "@(#)mt_misc.c  1.24    93/04/29 SMI" */
  38
  39 #include <sys/cdefs.h>
  40 #if defined(LIBC_SCCS) && !defined(lint)
  41 __RCSID("$NetBSD: mt_misc.c,v 1.9 2012/03/20 17:14:50 matt Exp $");
  42 #endif
  43
  44 #include        "namespace.h"
  45 #include        "reentrant.h"
  46 #include        <rpc/rpc.h>
  47 #include        <sys/time.h>
  48 #include        <stdlib.h>
  49 #include        <string.h>
  50
  51 #ifdef _REENTRANT
  52
  53 /* protects the services list (svc.c) */
  54 rwlock_t        svc_lock = RWLOCK_INITIALIZER;
  55 /* protects svc_fdset and the xports[] array */
  56 rwlock_t        svc_fd_lock = RWLOCK_INITIALIZER;
  57 /* protects the RPCBIND address cache */
  58 rwlock_t        rpcbaddr_cache_lock = RWLOCK_INITIALIZER;
  59
  60 /* protects authdes cache (svcauth_des.c) */
  61 mutex_t authdes_lock = MUTEX_INITIALIZER;
  62 /* auth_none.c serialization */
  63 mutex_t authnone_lock = MUTEX_INITIALIZER;
  64 /* protects the Auths list (svc_auth.c) */
  65 mutex_t authsvc_lock = MUTEX_INITIALIZER;
  66 /* protects client-side fd lock array */
  67 mutex_t clnt_fd_lock = MUTEX_INITIALIZER;
  68 /* clnt_raw.c serialization */
  69 mutex_t clntraw_lock = MUTEX_INITIALIZER;
  70 /* domainname and domain_fd (getdname.c) and default_domain (rpcdname.c) */
  71 mutex_t dname_lock = MUTEX_INITIALIZER;
  72 /* dupreq variables (svc_dg.c) */
  73 mutex_t dupreq_lock = MUTEX_INITIALIZER;
  74 /* protects first_time and hostname (key_call.c) */
  75 mutex_t keyserv_lock = MUTEX_INITIALIZER;
  76 /* serializes rpc_trace() (rpc_trace.c) */
  77 mutex_t libnsl_trace_lock = MUTEX_INITIALIZER;
  78 /* loopnconf (rpcb_clnt.c) */
  79 mutex_t loopnconf_lock = MUTEX_INITIALIZER;
  80 /* serializes ops initializations */
  81 mutex_t ops_lock = MUTEX_INITIALIZER;
  82 /* protects ``port'' static in bindresvport() */
  83 mutex_t portnum_lock = MUTEX_INITIALIZER;
  84 /* protects proglst list (svc_simple.c) */
  85 mutex_t proglst_lock = MUTEX_INITIALIZER;
  86 /* serializes clnt_com_create() (rpc_soc.c) */
  87 mutex_t rpcsoc_lock = MUTEX_INITIALIZER;
  88 /* svc_raw.c serialization */
  89 mutex_t svcraw_lock = MUTEX_INITIALIZER;
  90 /* xprtlist (svc_generic.c) */
  91 mutex_t xprtlist_lock = MUTEX_INITIALIZER;
  92 /* serializes calls to public key routines */
  93 mutex_t serialize_pkey = MUTEX_INITIALIZER;
  94
  95 #endif /* _REENTRANT */
  96
  97
  98 #undef  rpc_createerr
  99
 100 struct rpc_createerr rpc_createerr;
 101
 102 #ifdef _REENTRANT
 103 static thread_key_t rce_key;
 104 static once_t rce_once = ONCE_INITIALIZER;
 105
 106 static void
 107 __rpc_createerr_setup(void)
 108 {
 109
 110         thr_keycreate(&rce_key, free);
 111 }
 112 #endif /* _REENTRANT */
 113
 114 struct rpc_createerr*
 115 __rpc_createerr(void)
 116 {
 117 #ifdef _REENTRANT
 118         struct rpc_createerr *rce_addr = 0;
 119
 120         if (__isthreaded == 0)
 121                 return (&rpc_createerr);
 122         thr_once(&rce_once, __rpc_createerr_setup);
 123         rce_addr = thr_getspecific(rce_key);
 124         if (rce_addr == NULL) {
 125                 rce_addr = malloc(sizeof(*rce_addr));
 126                 if (rce_addr == NULL)
 127                         return &rpc_createerr;
 128                 thr_setspecific(rce_key, (void *) rce_addr);
 129                 memset(rce_addr, 0, sizeof (struct rpc_createerr));
 130         }
 131
 132         return (rce_addr);
 133 #else
 134         return &rpc_createerr;
 135 #endif
 136 }