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process/example/posix.cpp
2016-06-13 00:50:20 +02:00

49 lines
1.3 KiB
C++

// Copyright (c) 2006, 2007 Julio M. Merino Vidal
// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
// Copyright (c) 2009 Boris Schaeling
// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
#include <boost/process.hpp>
#include <boost/process/posix.hpp>
#include <iostream>
#include <fstream>
#include <unistd.h>
#include <errno.h>
using namespace boost::process;
int main()
{
//[bind_fd
pipe p;
system("test", posix::fd.bind(4, p.native_sink()) );
//]
//[close_fd
system("test", posix::fd.close(STDIN_FILENO));
//]
//[close_fds
system("test", posix::fd.close({STDIN_FILENO, STDOUT_FILENO}));
//]
//[fork_execve
const char *env[2] = { 0 };
env[0] = "LANG=de";
system("test",
on_setup([env](auto &e) { e.env = const_cast<char**>(env); }),
posix::on_fork_error([](auto&)
{ std::cerr << errno << std::endl; }),
posix::on_exec_setup([](auto&)
{ ::chroot("/new/root/directory/"); }),
posix::on_exec_error([](auto&)
{ std::ofstream ofs("log.txt"); if (ofs) ofs << errno; })
);
//]
}