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      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 }
    137