1 /* $NetBSD: cloexec.c,v 1.2 2017/01/28 21:31:50 christos Exp $ */
2
3 /*
4 * Copyright (c) 2008 Kungliga Tekniska Högskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
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 * 3. Neither the name of the Institute nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 #include <config.h>
37
38 #include <krb5/roken.h>
39
40 void ROKEN_LIB_FUNCTION
rk_cloexec(int fd)41 rk_cloexec(int fd)
42 {
43 #ifdef HAVE_FCNTL
44 int ret;
45
46 ret = fcntl(fd, F_GETFD);
47 if (ret == -1)
48 return;
49 if (fcntl(fd, F_SETFD, ret | FD_CLOEXEC) == -1)
50 return;
51 #endif
52 }
53
54 void ROKEN_LIB_FUNCTION
rk_cloexec_file(FILE * f)55 rk_cloexec_file(FILE *f)
56 {
57 #ifdef HAVE_FCNTL
58 rk_cloexec(fileno(f));
59 #endif
60 }
61
62 void ROKEN_LIB_FUNCTION
rk_cloexec_dir(DIR * d)63 rk_cloexec_dir(DIR * d)
64 {
65 #ifndef _WIN32
66 rk_cloexec(dirfd(d));
67 #endif
68 }
69
70 void ROKEN_LIB_FUNCTION
rk_cloexec_socket(rk_socket_t s)71 rk_cloexec_socket(rk_socket_t s)
72 {
73 #ifndef _WIN32
74 rk_cloexec((int)s);
75 #endif
76 }
77
78