TLA Line data Source code
1 : //
2 : // Copyright (c) 2025 Vinnie Falco (vinnie.falco@gmail.com)
3 : // Copyright (c) 2026 Steve Gerbino
4 : // Copyright (c) 2026 Michael Vandeberg
5 : //
6 : // Distributed under the Boost Software License, Version 1.0. (See accompanying
7 : // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
8 : //
9 : // Official repository: https://github.com/cppalliance/corosio
10 : //
11 :
12 : #ifndef BOOST_COROSIO_NATIVE_DETAIL_MAKE_ERR_HPP
13 : #define BOOST_COROSIO_NATIVE_DETAIL_MAKE_ERR_HPP
14 :
15 : #include <boost/corosio/detail/config.hpp>
16 : #include <boost/corosio/detail/platform.hpp>
17 : #include <boost/capy/error.hpp>
18 : #include <system_error>
19 :
20 : #if BOOST_COROSIO_POSIX
21 : #include <errno.h>
22 : #else
23 : #ifndef WIN32_LEAN_AND_MEAN
24 : #define WIN32_LEAN_AND_MEAN
25 : #endif
26 : #include <Windows.h>
27 : #endif
28 :
29 : namespace boost::corosio::detail {
30 :
31 : #if BOOST_COROSIO_POSIX
32 :
33 : /** Convert a POSIX errno value to std::error_code.
34 :
35 : Maps ECANCELED to capy::error::canceled.
36 :
37 : @param errn The errno value.
38 : @return The corresponding std::error_code.
39 : */
40 : inline std::error_code
41 HIT 220 : make_err(int errn) noexcept
42 : {
43 220 : if (errn == 0)
44 MIS 0 : return {};
45 :
46 HIT 220 : if (errn == ECANCELED)
47 MIS 0 : return capy::error::canceled;
48 :
49 : // Part of the portable wait contract; system_category's condition
50 : // mapping varies by C++ runtime.
51 HIT 220 : if (errn == ENOTSUP)
52 24 : return std::make_error_code(std::errc::operation_not_supported);
53 :
54 196 : return std::error_code(errn, std::system_category());
55 : }
56 :
57 : #else
58 :
59 : /** Convert a Windows error code to std::error_code.
60 :
61 : Maps ERROR_OPERATION_ABORTED and ERROR_CANCELLED to
62 : capy::error::canceled, and ERROR_HANDLE_EOF to capy::error::eof.
63 : Every other code passes through std::system_category().
64 :
65 : ERROR_NETNAME_DELETED (64) is deliberately not mapped here: IOCP
66 : delivers it both for a local closesocket() that cancels pending I/O
67 : and for a remote RST, so it can only be disambiguated per operation
68 : kind at the IOCP decode sites (see iocp_make_err in win_overlapped_op).
69 :
70 : @param dwError The Windows error code (DWORD).
71 : @return The corresponding std::error_code.
72 : */
73 : inline std::error_code
74 : make_err(unsigned long dwError) noexcept
75 : {
76 : if (dwError == 0)
77 : return {};
78 :
79 : if (dwError == ERROR_OPERATION_ABORTED || dwError == ERROR_CANCELLED)
80 : return capy::error::canceled;
81 :
82 : if (dwError == ERROR_HANDLE_EOF)
83 : return capy::error::eof;
84 :
85 : // Part of the portable wait, adoption, bind, and seek contracts;
86 : // system_category's condition mapping for WSA codes varies by
87 : // toolchain.
88 : if (dwError == WSAEOPNOTSUPP)
89 : return std::make_error_code(std::errc::operation_not_supported);
90 : if (dwError == WSAENOTSOCK)
91 : return std::make_error_code(std::errc::not_a_socket);
92 : if (dwError == WSAEAFNOSUPPORT)
93 : return std::make_error_code(
94 : std::errc::address_family_not_supported);
95 : if (dwError == WSAEPROTOTYPE)
96 : return std::make_error_code(std::errc::wrong_protocol_type);
97 : if (dwError == WSAEADDRINUSE)
98 : return std::make_error_code(std::errc::address_in_use);
99 : if (dwError == WSAEADDRNOTAVAIL)
100 : return std::make_error_code(std::errc::address_not_available);
101 : if (dwError == ERROR_NEGATIVE_SEEK)
102 : return std::make_error_code(std::errc::invalid_argument);
103 :
104 : return std::error_code(static_cast<int>(dwError), std::system_category());
105 : }
106 :
107 : #endif
108 :
109 : } // namespace boost::corosio::detail
110 :
111 : #endif
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