1/*	$NetBSD: src/lib/libc/rpc/mt_misc.c,v 1.7 2008-04-28 20:23:00 martin 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: src/lib/libc/rpc/mt_misc.c,v 1.7 2008-04-28 20:23:00 martin 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) */
54rwlock_t	svc_lock = RWLOCK_INITIALIZER;
55/* protects svc_fdset and the xports[] array */
56rwlock_t	svc_fd_lock = RWLOCK_INITIALIZER;
57/* protects the RPCBIND address cache */
58rwlock_t	rpcbaddr_cache_lock = RWLOCK_INITIALIZER;
59
60/* protects authdes cache (svcauth_des.c) */
61mutex_t	authdes_lock = MUTEX_INITIALIZER;
62/* auth_none.c serialization */
63mutex_t	authnone_lock = MUTEX_INITIALIZER;
64/* protects the Auths list (svc_auth.c) */
65mutex_t	authsvc_lock = MUTEX_INITIALIZER;
66/* protects client-side fd lock array */
67mutex_t	clnt_fd_lock = MUTEX_INITIALIZER;
68/* clnt_raw.c serialization */
69mutex_t	clntraw_lock = MUTEX_INITIALIZER;
70/* domainname and domain_fd (getdname.c) and default_domain (rpcdname.c) */
71mutex_t	dname_lock = MUTEX_INITIALIZER;
72/* dupreq variables (svc_dg.c) */
73mutex_t	dupreq_lock = MUTEX_INITIALIZER;
74/* protects first_time and hostname (key_call.c) */
75mutex_t	keyserv_lock = MUTEX_INITIALIZER;
76/* serializes rpc_trace() (rpc_trace.c) */
77mutex_t	libnsl_trace_lock = MUTEX_INITIALIZER;
78/* loopnconf (rpcb_clnt.c) */
79mutex_t	loopnconf_lock = MUTEX_INITIALIZER;
80/* serializes ops initializations */
81mutex_t	ops_lock = MUTEX_INITIALIZER;
82/* protects ``port'' static in bindresvport() */
83mutex_t	portnum_lock = MUTEX_INITIALIZER;
84/* protects proglst list (svc_simple.c) */
85mutex_t	proglst_lock = MUTEX_INITIALIZER;
86/* serializes clnt_com_create() (rpc_soc.c) */
87mutex_t	rpcsoc_lock = MUTEX_INITIALIZER;
88/* svc_raw.c serialization */
89mutex_t	svcraw_lock = MUTEX_INITIALIZER;
90/* xprtlist (svc_generic.c) */
91mutex_t	xprtlist_lock = MUTEX_INITIALIZER;
92/* serializes calls to public key routines */
93mutex_t serialize_pkey = MUTEX_INITIALIZER;
94
95#endif /* _REENTRANT */
96
97
98#undef	rpc_createerr
99
100struct rpc_createerr rpc_createerr;
101
102#ifdef _REENTRANT
103static thread_key_t rce_key;
104static once_t rce_once = ONCE_INITIALIZER;
105
106static void
107__rpc_createerr_setup(void)
108{
109
110	thr_keycreate(&rce_key, free);
111}
112#endif /* _REENTRANT */
113
114struct rpc_createerr*
115__rpc_createerr()
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
138