ceph/src/boost/boost/process/detail/posix/file_in.hpp

   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 <cstdio>
  17 #include <unistd.h>
  18
  19 namespace boost { namespace process { namespace detail { namespace posix {
  20
  21 struct file_in : handler_base_ext
  22 {
  23     file_descriptor file;
  24     int handle = file.handle();
  25
  26     template<typename T>
  27     file_in(T&& t) : file(std::forward<T>(t)) {}
  28     file_in(FILE * f) : handle(fileno(f)) {}
  29
  30     template <class WindowsExecutor>
  31     void on_exec_setup(WindowsExecutor &e) const
  32     {
  33         if (::dup2(handle, STDIN_FILENO) == -1)
  34              e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
  35     }
  36 };
  37
  38 }}}}
  39
  40 #endif