ceph/src/boost/libs/filesystem/src/error_handling.hpp

   1 //  error_handling.hpp  --------------------------------------------------------------------//
   2
   3 //  Copyright 2002-2009, 2014 Beman Dawes
   4 //  Copyright 2019 Andrey Semashev
   5
   6 //  Distributed under the Boost Software License, Version 1.0.
   7 //  See http://www.boost.org/LICENSE_1_0.txt
   8
   9 //  See library home page at http://www.boost.org/libs/filesystem
  10
  11 //--------------------------------------------------------------------------------------//
  12
  13 #ifndef BOOST_FILESYSTEM3_SRC_ERROR_HANDLING_HPP_
  14 #define BOOST_FILESYSTEM3_SRC_ERROR_HANDLING_HPP_
  15
  16 #include <cerrno>
  17 #include <boost/system/error_code.hpp>
  18 #include <boost/filesystem/config.hpp>
  19 #include <boost/filesystem/exception.hpp>
  20
  21 #if defined(BOOST_WINDOWS_API)
  22 #include <boost/winapi/basic_types.hpp>
  23 #include <boost/winapi/get_last_error.hpp>
  24 #include <boost/winapi/error_codes.hpp>
  25 #endif
  26
  27 namespace boost {
  28 namespace filesystem {
  29
  30 #if defined(BOOST_POSIX_API)
  31
  32 typedef int err_t;
  33
  34 //  POSIX uses a 0 return to indicate success
  35 #define BOOST_ERRNO    errno
  36
  37 #define BOOST_ERROR_NOT_SUPPORTED ENOSYS
  38 #define BOOST_ERROR_ALREADY_EXISTS EEXIST
  39
  40 #else
  41
  42 typedef boost::winapi::DWORD_ err_t;
  43
  44 //  Windows uses a non-0 return to indicate success
  45 #define BOOST_ERRNO    boost::winapi::GetLastError()
  46
  47 #define BOOST_ERROR_ALREADY_EXISTS boost::winapi::ERROR_ALREADY_EXISTS_
  48 #define BOOST_ERROR_NOT_SUPPORTED boost::winapi::ERROR_NOT_SUPPORTED_
  49
  50 #endif
  51
  52 //  error handling helpers  ----------------------------------------------------------//
  53
  54 // Implemented in exception.cpp
  55 void emit_error(err_t error_num, system::error_code* ec, const char* message);
  56 void emit_error(err_t error_num, const path& p, system::error_code* ec, const char* message);
  57 void emit_error(err_t error_num, const path& p1, const path& p2, system::error_code* ec, const char* message);
  58
  59 inline bool error(err_t error_num, system::error_code* ec, const char* message)
  60 {
  61   if (BOOST_LIKELY(!error_num))
  62   {
  63     if (ec)
  64       ec->clear();
  65     return false;
  66   }
  67   else
  68   { //  error
  69     filesystem::emit_error(error_num, ec, message);
  70     return true;
  71   }
  72 }
  73
  74 inline bool error(err_t error_num, const path& p, system::error_code* ec, const char* message)
  75 {
  76   if (BOOST_LIKELY(!error_num))
  77   {
  78     if (ec)
  79       ec->clear();
  80     return false;
  81   }
  82   else
  83   { //  error
  84     filesystem::emit_error(error_num, p, ec, message);
  85     return true;
  86   }
  87 }
  88
  89 inline bool error(err_t error_num, const path& p1, const path& p2, system::error_code* ec, const char* message)
  90 {
  91   if (BOOST_LIKELY(!error_num))
  92   {
  93     if (ec)
  94       ec->clear();
  95     return false;
  96   }
  97   else
  98   { //  error
  99     filesystem::emit_error(error_num, p1, p2, ec, message);
 100     return true;
 101   }
 102 }
 103
 104 } // namespace filesystem
 105 } // namespace boost
 106
 107 #endif // BOOST_FILESYSTEM3_SRC_ERROR_HANDLING_HPP_