1 // Copyright (c) 2006, 2007 Julio M. Merino Vidal
2 // Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
3 // Copyright (c) 2009 Boris Schaeling
4 // Copyright (c) 2010 Felipe Tanus, Boris Schaeling
5 // Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
6 //
7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
9 
10 #ifndef BOOST_PROCESS_DETAIL_POSIX_FILE_IN_HPP
11 #define BOOST_PROCESS_DETAIL_POSIX_FILE_IN_HPP
12 
13 #include <boost/process/pipe.hpp>
14 #include <boost/process/detail/posix/handler.hpp>
15 #include <boost/process/detail/posix/file_descriptor.hpp>
16 #include <boost/process/detail/used_handles.hpp>
17 #include <cstdio>
18 #include <unistd.h>
19 
20 namespace boost { namespace process { namespace detail { namespace posix {
21 
22 struct file_in : handler_base_ext, ::boost::process::detail::uses_handles
23 {
24     file_descriptor file;
25     int handle = file.handle();
26 
get_used_handlesboost::process::detail::posix::file_in27     std::array<int, 2> get_used_handles()
28     {
29         return {STDIN_FILENO, handle};
30     }
31 
32     template<typename T>
file_inboost::process::detail::posix::file_in33     file_in(T&& t) : file(std::forward<T>(t)) {}
file_inboost::process::detail::posix::file_in34     file_in(FILE * f) : handle(fileno(f)) {}
35 
36     template <class WindowsExecutor>
on_exec_setupboost::process::detail::posix::file_in37     void on_exec_setup(WindowsExecutor &e) const
38     {
39         if (::dup2(handle, STDIN_FILENO) == -1)
40              e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
41     }
42 };
43 
44 }}}}
45 
46 #endif
47