2 * Copyright (c) 2006 The FreeBSD Project. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * $FreeBSD: src/lib/libc/resolv/res_state.c,v 1.3 2006/05/21 11:29:26 ume Exp $
28 #include <sys/types.h>
29 #include <netinet/in.h>
30 #include <arpa/nameser.h>
34 #include "namespace.h"
35 #include "reentrant.h"
36 #include "un-namespace.h"
40 struct __res_state _res
;
42 static thread_key_t res_key
;
43 static once_t res_init_once
= ONCE_INITIALIZER
;
44 static int res_thr_keycreated
= 0;
49 res_state statp
= ptr
;
51 if (statp
->_u
._ext
.ext
!= NULL
)
59 res_thr_keycreated
= thr_keycreate(&res_key
, free_res
) == 0;
70 if (thr_once(&res_init_once
, res_keycreate
) != 0 ||
74 statp
= thr_getspecific(res_key
);
77 statp
= calloc(1, sizeof(*statp
));
80 #ifdef __BIND_RES_TEXT
81 statp
->options
= RES_TIMEOUT
; /* Motorola, et al. */
83 if (thr_setspecific(res_key
, statp
) == 0)