Home | History | Annotate | Line # | Download | only in roken 
      1 /*	$NetBSD: cloexec.c,v 1.2 2017/01/28 21:31:50 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2008 Kungliga Tekniska Hgskolan
      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
     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
     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
     63 rk_cloexec_dir(DIR * d)
     64 {
     65 #ifndef _WIN32
     66     rk_cloexec(dirfd(d));
     67 #endif
     68 }
     69 
     70 void ROKEN_LIB_FUNCTION
     71 rk_cloexec_socket(rk_socket_t s)
     72 {
     73 #ifndef _WIN32
     74     rk_cloexec((int)s);
     75 #endif
     76 }
     77 
     78