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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2011 New Dream Network
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#include "include/compat.h"
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
int pipe_cloexec(int pipefd[2])
{
int ret;
#if defined(HAVE_PIPE2) && defined(O_CLOEXEC)
ret = pipe2(pipefd, O_CLOEXEC);
if (ret == -1)
return -errno;
return 0;
#else
ret = pipe(pipefd);
if (ret == -1)
return -errno;
/*
* The old-fashioned, race-condition prone way that we have to fall
* back on if O_CLOEXEC does not exist.
*/
ret = fcntl(pipefd[0], F_SETFD, FD_CLOEXEC);
if (ret == -1) {
ret = -errno;
goto out;
}
ret = fcntl(pipefd[1], F_SETFD, FD_CLOEXEC);
if (ret == -1) {
ret = -errno;
goto out;
}
return 0;
out:
VOID_TEMP_FAILURE_RETRY(close(pipefd[0]));
VOID_TEMP_FAILURE_RETRY(close(pipefd[1]));
return ret;
#endif
}
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