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process/example/posix.cpp
2016-02-07 13:24:49 +01:00

69 lines
1.7 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/iostreams/device/file_descriptor.hpp>
#include <boost/assign/list_of.hpp>
#include <iostream>
#include <fstream>
#include <unistd.h>
#include <errno.h>
using namespace boost::process;
using namespace boost::process::initializers;
using namespace boost::iostreams;
int main()
{
//[bind_fd
file_descriptor_sink sink("output.txt");
execute(
run_exe("test"),
bind_fd(4, sink)
);
//]
//[close_fd
execute(
run_exe("test"),
close_fd(STDIN_FILENO)
);
//]
//[close_fds
execute(
run_exe("test"),
close_fds(boost::assign::list_of(STDIN_FILENO)(4))
);
//]
//[close_fds_if
execute(
run_exe("test"),
close_fds_if([](int fd){ return fd == STDIN_FILENO; })
);
//]
//[fork_execve
const char *env[2] = { 0 };
env[0] = "LANG=de";
execute(
run_exe("test"),
on_fork_setup([env](executor &e)
{ e.env = const_cast<char**>(env); }),
on_fork_error([](executor&)
{ std::cerr << errno << std::endl; }),
on_exec_setup([](executor&)
{ chroot("/new/root/directory/"); }),
on_exec_error([](executor&)
{ std::ofstream ofs("log.txt"); if (ofs) ofs << errno; })
);
//]
}