This file is indexed.

/usr/include/asio/detail/winsock_init.hpp is in libasio-dev 1:1.10.8-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
//
// detail/winsock_init.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// 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)
//

#ifndef ASIO_DETAIL_WINSOCK_INIT_HPP
#define ASIO_DETAIL_WINSOCK_INIT_HPP

#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)

#include "asio/detail/config.hpp"

#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)

#include "asio/detail/push_options.hpp"

namespace asio {
namespace detail {

class winsock_init_base
{
protected:
  // Structure to track result of initialisation and number of uses. POD is used
  // to ensure that the values are zero-initialised prior to any code being run.
  struct data
  {
    long init_count_;
    long result_;
  };

  ASIO_DECL static void startup(data& d,
      unsigned char major, unsigned char minor);

  ASIO_DECL static void manual_startup(data& d);

  ASIO_DECL static void cleanup(data& d);

  ASIO_DECL static void manual_cleanup(data& d);

  ASIO_DECL static void throw_on_error(data& d);
};

template <int Major = 2, int Minor = 0>
class winsock_init : private winsock_init_base
{
public:
  winsock_init(bool allow_throw = true)
  {
    startup(data_, Major, Minor);
    if (allow_throw)
      throw_on_error(data_);
  }

  winsock_init(const winsock_init&)
  {
    startup(data_, Major, Minor);
    throw_on_error(data_);
  }

  ~winsock_init()
  {
    cleanup(data_);
  }

  // This class may be used to indicate that user code will manage Winsock
  // initialisation and cleanup. This may be required in the case of a DLL, for
  // example, where it is not safe to initialise Winsock from global object
  // constructors.
  //
  // To prevent asio from initialising Winsock, the object must be constructed
  // before any Asio's own global objects. With MSVC, this may be accomplished
  // by adding the following code to the DLL:
  //
  //   #pragma warning(push)
  //   #pragma warning(disable:4073)
  //   #pragma init_seg(lib)
  //   asio::detail::winsock_init<>::manual manual_winsock_init;
  //   #pragma warning(pop)
  class manual
  {
  public:
    manual()
    {
      manual_startup(data_);
    }

    manual(const manual&)
    {
      manual_startup(data_);
    }

    ~manual()
    {
      manual_cleanup(data_);
    }
  };

private:
  friend class manual;
  static data data_;
};

template <int Major, int Minor>
winsock_init_base::data winsock_init<Major, Minor>::data_;

// Static variable to ensure that winsock is initialised before main, and
// therefore before any other threads can get started.
static const winsock_init<>& winsock_init_instance = winsock_init<>(false);

} // namespace detail
} // namespace asio

#include "asio/detail/pop_options.hpp"

#if defined(ASIO_HEADER_ONLY)
# include "asio/detail/impl/winsock_init.ipp"
#endif // defined(ASIO_HEADER_ONLY)

#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)

#endif // ASIO_DETAIL_WINSOCK_INIT_HPP