468 lines
21 KiB
Plaintext
468 lines
21 KiB
Plaintext
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// error_code support implementation file ----------------------------------//
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// Copyright Beman Dawes 2002, 2006
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// Copyright (c) Microsoft Corporation 2014
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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// See library home page at http://www.boost.org/libs/system
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//----------------------------------------------------------------------------//
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#include <boost/config/warning_disable.hpp>
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#include <boost/system/config.hpp>
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#include <boost/system/error_code.hpp>
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#include <boost/cerrno.hpp>
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#include <vector>
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#include <cstdlib>
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#include <cassert>
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#include <cstring> // for strerror/strerror_r
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# if defined( BOOST_WINDOWS_API )
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# include <windows.h>
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# if !BOOST_PLAT_WINDOWS_RUNTIME
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# include <boost/system/detail/local_free_on_destruction.hpp>
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# endif
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# ifndef ERROR_INCORRECT_SIZE
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# define ERROR_INCORRECT_SIZE ERROR_BAD_ARGUMENTS
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# endif
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# endif
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//----------------------------------------------------------------------------//
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namespace boost
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{
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namespace system
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{
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namespace
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{
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// standard error categories ---------------------------------------------//
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class generic_error_category : public error_category
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{
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public:
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generic_error_category(){}
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const char * name() const BOOST_SYSTEM_NOEXCEPT;
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std::string message( int ev ) const;
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};
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class system_error_category : public error_category
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{
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public:
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system_error_category(){}
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const char * name() const BOOST_SYSTEM_NOEXCEPT;
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std::string message( int ev ) const;
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error_condition default_error_condition( int ev ) const BOOST_SYSTEM_NOEXCEPT;
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};
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// generic_error_category implementation ---------------------------------//
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const char * generic_error_category::name() const BOOST_SYSTEM_NOEXCEPT
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{
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return "generic";
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}
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std::string generic_error_category::message( int ev ) const
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{
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using namespace boost::system::errc;
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#if defined(__PGI)
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using boost::system::errc::invalid_argument;
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#endif
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static std::string unknown_err( "Unknown error" );
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// strerror_r is preferred because it is always thread safe,
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// however, we fallback to strerror in certain cases because:
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// -- Windows doesn't provide strerror_r.
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// -- HP and Sun do provide strerror_r on newer systems, but there is
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// no way to tell if is available at runtime and in any case their
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// versions of strerror are thread safe anyhow.
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// -- Linux only sometimes provides strerror_r.
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// -- Tru64 provides strerror_r only when compiled -pthread.
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// -- VMS doesn't provide strerror_r, but on this platform, strerror is
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// thread safe.
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# if defined(BOOST_WINDOWS_API) || defined(__hpux) || defined(__sun)\
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|| (defined(__linux) && (!defined(__USE_XOPEN2K) || defined(BOOST_SYSTEM_USE_STRERROR)))\
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|| (defined(__osf__) && !defined(_REENTRANT))\
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|| (defined(__INTEGRITY))\
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|| (defined(__vms))\
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|| (defined(__QNXNTO__))
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const char * c_str = std::strerror( ev );
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return c_str
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? std::string( c_str )
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: unknown_err;
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# else // use strerror_r
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char buf[64];
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char * bp = buf;
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std::size_t sz = sizeof(buf);
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# if defined(__CYGWIN__) || defined(__USE_GNU)
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// Oddball version of strerror_r
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const char * c_str = strerror_r( ev, bp, sz );
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return c_str
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? std::string( c_str )
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: unknown_err;
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# else
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// POSIX version of strerror_r
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int result;
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for (;;)
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{
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// strerror_r returns 0 on success, otherwise ERANGE if buffer too small,
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// invalid_argument if ev not a valid error number
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# if defined (__sgi)
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const char * c_str = strerror( ev );
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result = 0;
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return c_str
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? std::string( c_str )
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: unknown_err;
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# else
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result = strerror_r( ev, bp, sz );
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# endif
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if (result == 0 )
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break;
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else
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{
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# if defined(__linux)
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// Linux strerror_r returns -1 on error, with error number in errno
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result = errno;
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# endif
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if ( result != ERANGE ) break;
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if ( sz > sizeof(buf) ) std::free( bp );
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sz *= 2;
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if ( (bp = static_cast<char*>(std::malloc( sz ))) == 0 )
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return std::string( "ENOMEM" );
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}
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}
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std::string msg;
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# ifndef BOOST_NO_EXCEPTIONS
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try
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# endif
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{
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msg = ( ( result == invalid_argument ) ? "Unknown error" : bp );
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}
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# ifndef BOOST_NO_EXCEPTIONS
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// See ticket #2098
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catch(...)
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{
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// just eat the exception
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}
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# endif
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if ( sz > sizeof(buf) ) std::free( bp );
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sz = 0;
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return msg;
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# endif // else POSIX version of strerror_r
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# endif // else use strerror_r
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}
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// system_error_category implementation --------------------------------//
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const char * system_error_category::name() const BOOST_SYSTEM_NOEXCEPT
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{
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return "system";
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}
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error_condition system_error_category::default_error_condition( int ev ) const BOOST_SYSTEM_NOEXCEPT
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{
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using namespace boost::system::errc;
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#if defined(__PGI)
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using boost::system::errc::invalid_argument;
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#endif
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# if defined(BOOST_WINDOWS_API)
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# if defined(WINAPI_FAMILY) && ((WINAPI_FAMILY & WINAPI_PARTITION_APP) != 0)
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// When using the Windows Runtime, most system errors are reported as HRESULTs.
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// We want to map the common Win32 errors to their equivalent error condition,
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// whether or not they are reported via an HRESULT.
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if ( ev < 0 ) // Check for failed HRESULTs only.
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if ( HRESULT_FACILITY( ev ) == FACILITY_WIN32 )
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ev = HRESULT_CODE( ev );
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# endif
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# endif
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switch ( ev )
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{
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case 0: return make_error_condition( success );
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# if defined(BOOST_POSIX_API)
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// POSIX-like O/S -> posix_errno decode table ---------------------------//
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case E2BIG: return make_error_condition( argument_list_too_long );
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case EACCES: return make_error_condition( permission_denied );
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case EADDRINUSE: return make_error_condition( address_in_use );
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case EADDRNOTAVAIL: return make_error_condition( address_not_available );
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case EAFNOSUPPORT: return make_error_condition( address_family_not_supported );
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case EAGAIN: return make_error_condition( resource_unavailable_try_again );
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# if EALREADY != EBUSY // EALREADY and EBUSY are the same on QNX Neutrino
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case EALREADY: return make_error_condition( connection_already_in_progress );
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# endif
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case EBADF: return make_error_condition( bad_file_descriptor );
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case EBADMSG: return make_error_condition( bad_message );
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case EBUSY: return make_error_condition( device_or_resource_busy );
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case ECANCELED: return make_error_condition( operation_canceled );
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case ECHILD: return make_error_condition( no_child_process );
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case ECONNABORTED: return make_error_condition( connection_aborted );
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case ECONNREFUSED: return make_error_condition( connection_refused );
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case ECONNRESET: return make_error_condition( connection_reset );
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case EDEADLK: return make_error_condition( resource_deadlock_would_occur );
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case EDESTADDRREQ: return make_error_condition( destination_address_required );
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case EDOM: return make_error_condition( argument_out_of_domain );
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case EEXIST: return make_error_condition( file_exists );
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case EFAULT: return make_error_condition( bad_address );
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case EFBIG: return make_error_condition( file_too_large );
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case EHOSTUNREACH: return make_error_condition( host_unreachable );
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case EIDRM: return make_error_condition( identifier_removed );
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case EILSEQ: return make_error_condition( illegal_byte_sequence );
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case EINPROGRESS: return make_error_condition( operation_in_progress );
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case EINTR: return make_error_condition( interrupted );
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case EINVAL: return make_error_condition( invalid_argument );
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case EIO: return make_error_condition( io_error );
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case EISCONN: return make_error_condition( already_connected );
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case EISDIR: return make_error_condition( is_a_directory );
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case ELOOP: return make_error_condition( too_many_symbolic_link_levels );
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case EMFILE: return make_error_condition( too_many_files_open );
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case EMLINK: return make_error_condition( too_many_links );
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case EMSGSIZE: return make_error_condition( message_size );
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case ENAMETOOLONG: return make_error_condition( filename_too_long );
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case ENETDOWN: return make_error_condition( network_down );
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case ENETRESET: return make_error_condition( network_reset );
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case ENETUNREACH: return make_error_condition( network_unreachable );
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case ENFILE: return make_error_condition( too_many_files_open_in_system );
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case ENOBUFS: return make_error_condition( no_buffer_space );
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case ENODATA: return make_error_condition( no_message_available );
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case ENODEV: return make_error_condition( no_such_device );
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case ENOENT: return make_error_condition( no_such_file_or_directory );
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case ENOEXEC: return make_error_condition( executable_format_error );
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case ENOLCK: return make_error_condition( no_lock_available );
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case ENOLINK: return make_error_condition( no_link );
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case ENOMEM: return make_error_condition( not_enough_memory );
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case ENOMSG: return make_error_condition( no_message );
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case ENOPROTOOPT: return make_error_condition( no_protocol_option );
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case ENOSPC: return make_error_condition( no_space_on_device );
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case ENOSR: return make_error_condition( no_stream_resources );
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case ENOSTR: return make_error_condition( not_a_stream );
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case ENOSYS: return make_error_condition( function_not_supported );
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case ENOTCONN: return make_error_condition( not_connected );
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case ENOTDIR: return make_error_condition( not_a_directory );
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# if ENOTEMPTY != EEXIST // AIX treats ENOTEMPTY and EEXIST as the same value
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case ENOTEMPTY: return make_error_condition( directory_not_empty );
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# endif // ENOTEMPTY != EEXIST
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# if ENOTRECOVERABLE != ECONNRESET // the same on some Broadcom chips
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case ENOTRECOVERABLE: return make_error_condition( state_not_recoverable );
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# endif // ENOTRECOVERABLE != ECONNRESET
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case ENOTSOCK: return make_error_condition( not_a_socket );
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case ENOTSUP: return make_error_condition( not_supported );
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case ENOTTY: return make_error_condition( inappropriate_io_control_operation );
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case ENXIO: return make_error_condition( no_such_device_or_address );
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# if EOPNOTSUPP != ENOTSUP
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case EOPNOTSUPP: return make_error_condition( operation_not_supported );
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# endif // EOPNOTSUPP != ENOTSUP
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case EOVERFLOW: return make_error_condition( value_too_large );
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# if EOWNERDEAD != ECONNABORTED // the same on some Broadcom chips
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case EOWNERDEAD: return make_error_condition( owner_dead );
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# endif // EOWNERDEAD != ECONNABORTED
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case EPERM: return make_error_condition( operation_not_permitted );
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case EPIPE: return make_error_condition( broken_pipe );
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case EPROTO: return make_error_condition( protocol_error );
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case EPROTONOSUPPORT: return make_error_condition( protocol_not_supported );
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case EPROTOTYPE: return make_error_condition( wrong_protocol_type );
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case ERANGE: return make_error_condition( result_out_of_range );
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case EROFS: return make_error_condition( read_only_file_system );
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case ESPIPE: return make_error_condition( invalid_seek );
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case ESRCH: return make_error_condition( no_such_process );
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case ETIME: return make_error_condition( stream_timeout );
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case ETIMEDOUT: return make_error_condition( timed_out );
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case ETXTBSY: return make_error_condition( text_file_busy );
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# if EAGAIN != EWOULDBLOCK
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case EWOULDBLOCK: return make_error_condition( operation_would_block );
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# endif // EAGAIN != EWOULDBLOCK
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case EXDEV: return make_error_condition( cross_device_link );
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#else
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// Windows system -> posix_errno decode table ---------------------------//
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// see WinError.h comments for descriptions of errors
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case ERROR_ACCESS_DENIED: return make_error_condition( permission_denied );
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case ERROR_ALREADY_EXISTS: return make_error_condition( file_exists );
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case ERROR_BAD_UNIT: return make_error_condition( no_such_device );
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case ERROR_BUFFER_OVERFLOW: return make_error_condition( filename_too_long );
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case ERROR_BUSY: return make_error_condition( device_or_resource_busy );
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case ERROR_BUSY_DRIVE: return make_error_condition( device_or_resource_busy );
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case ERROR_CANNOT_MAKE: return make_error_condition( permission_denied );
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case ERROR_CANTOPEN: return make_error_condition( io_error );
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case ERROR_CANTREAD: return make_error_condition( io_error );
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case ERROR_CANTWRITE: return make_error_condition( io_error );
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case ERROR_CURRENT_DIRECTORY: return make_error_condition( permission_denied );
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case ERROR_DEV_NOT_EXIST: return make_error_condition( no_such_device );
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case ERROR_DEVICE_IN_USE: return make_error_condition( device_or_resource_busy );
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case ERROR_DIR_NOT_EMPTY: return make_error_condition( directory_not_empty );
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case ERROR_DIRECTORY: return make_error_condition( invalid_argument ); // WinError.h: "The directory name is invalid"
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case ERROR_DISK_FULL: return make_error_condition( no_space_on_device );
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case ERROR_FILE_EXISTS: return make_error_condition( file_exists );
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case ERROR_FILE_NOT_FOUND: return make_error_condition( no_such_file_or_directory );
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case ERROR_HANDLE_DISK_FULL: return make_error_condition( no_space_on_device );
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case ERROR_INVALID_ACCESS: return make_error_condition( permission_denied );
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case ERROR_INVALID_DRIVE: return make_error_condition( no_such_device );
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case ERROR_INVALID_FUNCTION: return make_error_condition( function_not_supported );
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case ERROR_INVALID_HANDLE: return make_error_condition( invalid_argument );
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case ERROR_INVALID_NAME: return make_error_condition( invalid_argument );
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case ERROR_LOCK_VIOLATION: return make_error_condition( no_lock_available );
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case ERROR_LOCKED: return make_error_condition( no_lock_available );
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case ERROR_NEGATIVE_SEEK: return make_error_condition( invalid_argument );
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case ERROR_NOACCESS: return make_error_condition( permission_denied );
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case ERROR_NOT_ENOUGH_MEMORY: return make_error_condition( not_enough_memory );
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case ERROR_NOT_READY: return make_error_condition( resource_unavailable_try_again );
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case ERROR_NOT_SAME_DEVICE: return make_error_condition( cross_device_link );
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case ERROR_OPEN_FAILED: return make_error_condition( io_error );
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case ERROR_OPEN_FILES: return make_error_condition( device_or_resource_busy );
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case ERROR_OPERATION_ABORTED: return make_error_condition( operation_canceled );
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case ERROR_OUTOFMEMORY: return make_error_condition( not_enough_memory );
|
||
|
|
case ERROR_PATH_NOT_FOUND: return make_error_condition( no_such_file_or_directory );
|
||
|
|
case ERROR_READ_FAULT: return make_error_condition( io_error );
|
||
|
|
case ERROR_RETRY: return make_error_condition( resource_unavailable_try_again );
|
||
|
|
case ERROR_SEEK: return make_error_condition( io_error );
|
||
|
|
case ERROR_SHARING_VIOLATION: return make_error_condition( permission_denied );
|
||
|
|
case ERROR_TOO_MANY_OPEN_FILES: return make_error_condition( too_many_files_open );
|
||
|
|
case ERROR_WRITE_FAULT: return make_error_condition( io_error );
|
||
|
|
case ERROR_WRITE_PROTECT: return make_error_condition( permission_denied );
|
||
|
|
case WSAEACCES: return make_error_condition( permission_denied );
|
||
|
|
case WSAEADDRINUSE: return make_error_condition( address_in_use );
|
||
|
|
case WSAEADDRNOTAVAIL: return make_error_condition( address_not_available );
|
||
|
|
case WSAEAFNOSUPPORT: return make_error_condition( address_family_not_supported );
|
||
|
|
case WSAEALREADY: return make_error_condition( connection_already_in_progress );
|
||
|
|
case WSAEBADF: return make_error_condition( bad_file_descriptor );
|
||
|
|
case WSAECONNABORTED: return make_error_condition( connection_aborted );
|
||
|
|
case WSAECONNREFUSED: return make_error_condition( connection_refused );
|
||
|
|
case WSAECONNRESET: return make_error_condition( connection_reset );
|
||
|
|
case WSAEDESTADDRREQ: return make_error_condition( destination_address_required );
|
||
|
|
case WSAEFAULT: return make_error_condition( bad_address );
|
||
|
|
case WSAEHOSTUNREACH: return make_error_condition( host_unreachable );
|
||
|
|
case WSAEINPROGRESS: return make_error_condition( operation_in_progress );
|
||
|
|
case WSAEINTR: return make_error_condition( interrupted );
|
||
|
|
case WSAEINVAL: return make_error_condition( invalid_argument );
|
||
|
|
case WSAEISCONN: return make_error_condition( already_connected );
|
||
|
|
case WSAEMFILE: return make_error_condition( too_many_files_open );
|
||
|
|
case WSAEMSGSIZE: return make_error_condition( message_size );
|
||
|
|
case WSAENAMETOOLONG: return make_error_condition( filename_too_long );
|
||
|
|
case WSAENETDOWN: return make_error_condition( network_down );
|
||
|
|
case WSAENETRESET: return make_error_condition( network_reset );
|
||
|
|
case WSAENETUNREACH: return make_error_condition( network_unreachable );
|
||
|
|
case WSAENOBUFS: return make_error_condition( no_buffer_space );
|
||
|
|
case WSAENOPROTOOPT: return make_error_condition( no_protocol_option );
|
||
|
|
case WSAENOTCONN: return make_error_condition( not_connected );
|
||
|
|
case WSAENOTSOCK: return make_error_condition( not_a_socket );
|
||
|
|
case WSAEOPNOTSUPP: return make_error_condition( operation_not_supported );
|
||
|
|
case WSAEPROTONOSUPPORT: return make_error_condition( protocol_not_supported );
|
||
|
|
case WSAEPROTOTYPE: return make_error_condition( wrong_protocol_type );
|
||
|
|
case WSAETIMEDOUT: return make_error_condition( timed_out );
|
||
|
|
case WSAEWOULDBLOCK: return make_error_condition( operation_would_block );
|
||
|
|
#endif
|
||
|
|
default: return error_condition( ev, system_category() );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# if !defined( BOOST_WINDOWS_API )
|
||
|
|
|
||
|
|
std::string system_error_category::message( int ev ) const
|
||
|
|
{
|
||
|
|
return generic_category().message( ev );
|
||
|
|
}
|
||
|
|
# else
|
||
|
|
|
||
|
|
std::string system_error_category::message( int ev ) const
|
||
|
|
{
|
||
|
|
#if defined(UNDER_CE) || BOOST_PLAT_WINDOWS_RUNTIME || defined(BOOST_NO_ANSI_APIS)
|
||
|
|
std::wstring buf(128, wchar_t());
|
||
|
|
for (;;)
|
||
|
|
{
|
||
|
|
DWORD retval = ::FormatMessageW(
|
||
|
|
FORMAT_MESSAGE_FROM_SYSTEM |
|
||
|
|
FORMAT_MESSAGE_IGNORE_INSERTS,
|
||
|
|
NULL,
|
||
|
|
ev,
|
||
|
|
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
|
||
|
|
&buf[0],
|
||
|
|
buf.size(),
|
||
|
|
NULL
|
||
|
|
);
|
||
|
|
|
||
|
|
if (retval > 0)
|
||
|
|
{
|
||
|
|
buf.resize(retval);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
else if ( ::GetLastError() != ERROR_INSUFFICIENT_BUFFER )
|
||
|
|
{
|
||
|
|
return std::string("Unknown error");
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
buf.resize(buf.size() + buf.size() / 2);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int num_chars = (buf.size() + 1) * 2;
|
||
|
|
LPSTR narrow_buffer = (LPSTR)_alloca( num_chars );
|
||
|
|
if (::WideCharToMultiByte(CP_ACP, 0, buf.c_str(), -1, narrow_buffer, num_chars, NULL, NULL) == 0)
|
||
|
|
{
|
||
|
|
return std::string("Unknown error");
|
||
|
|
}
|
||
|
|
|
||
|
|
std::string str( narrow_buffer );
|
||
|
|
#else
|
||
|
|
LPVOID lpMsgBuf = 0;
|
||
|
|
DWORD retval = ::FormatMessageA(
|
||
|
|
FORMAT_MESSAGE_ALLOCATE_BUFFER |
|
||
|
|
FORMAT_MESSAGE_FROM_SYSTEM |
|
||
|
|
FORMAT_MESSAGE_IGNORE_INSERTS,
|
||
|
|
NULL,
|
||
|
|
ev,
|
||
|
|
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
|
||
|
|
(LPSTR) &lpMsgBuf,
|
||
|
|
0,
|
||
|
|
NULL
|
||
|
|
);
|
||
|
|
detail::local_free_on_destruction lfod(lpMsgBuf);
|
||
|
|
if (retval == 0)
|
||
|
|
return std::string("Unknown error");
|
||
|
|
|
||
|
|
std::string str( static_cast<LPCSTR>(lpMsgBuf) );
|
||
|
|
# endif
|
||
|
|
while ( str.size()
|
||
|
|
&& (str[str.size()-1] == '\n' || str[str.size()-1] == '\r') )
|
||
|
|
str.erase( str.size()-1 );
|
||
|
|
if ( str.size() && str[str.size()-1] == '.' )
|
||
|
|
{ str.erase( str.size()-1 ); }
|
||
|
|
return str;
|
||
|
|
}
|
||
|
|
# endif
|
||
|
|
|
||
|
|
} // unnamed namespace
|
||
|
|
|
||
|
|
|
||
|
|
# ifndef BOOST_SYSTEM_NO_DEPRECATED
|
||
|
|
BOOST_SYSTEM_DECL error_code throws; // "throw on error" special error_code;
|
||
|
|
// note that it doesn't matter if this
|
||
|
|
// isn't initialized before use since
|
||
|
|
// the only use is to take its
|
||
|
|
// address for comparison purposes
|
||
|
|
# endif
|
||
|
|
|
||
|
|
# ifdef BOOST_ERROR_CODE_HEADER_ONLY
|
||
|
|
# define BOOST_SYSTEM_LINKAGE inline
|
||
|
|
# else
|
||
|
|
# define BOOST_SYSTEM_LINKAGE BOOST_SYSTEM_DECL
|
||
|
|
# endif
|
||
|
|
|
||
|
|
BOOST_SYSTEM_LINKAGE const error_category & system_category() BOOST_SYSTEM_NOEXCEPT
|
||
|
|
{
|
||
|
|
static const system_error_category system_category_const;
|
||
|
|
return system_category_const;
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOST_SYSTEM_LINKAGE const error_category & generic_category() BOOST_SYSTEM_NOEXCEPT
|
||
|
|
{
|
||
|
|
static const generic_error_category generic_category_const;
|
||
|
|
return generic_category_const;
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace system
|
||
|
|
} // namespace boost
|