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/* wrap apple's lack of SOCK_CLOEXEC, for libreswan
*
* Copyright (C) 2022 Andrew Cagney
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <https://www.gnu.org/licenses/gpl2.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
*/
#include "lsw_socket.h"
#ifndef SOCK_CLOEXEC
#include <errno.h>
#include <fcntl.h>
#include <unistd.h> /* for close() */
#endif
/*
* Hack to get around Darwin's (Apple's) lack of SOCK_CLOEXEC.
*/
int cloexec_socket(int domain, int type, int protocol)
{
#ifdef SOCK_CLOEXEC
return socket(domain, type|SOCK_CLOEXEC, protocol);
#else
int sock = socket(domain, type, protocol);
int error = errno;
if (sock < 0) {
return sock;
}
int e = fcntl(sock, F_SETFD, FD_CLOEXEC);
if (e < 0) {
close(sock);
errno = error;
return -1;
}
return sock;
#endif
}
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