| 1 | /* Error handling for Windows
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| 2 | Copyright (C) 1996-2016 Free Software Foundation, Inc.
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| 3 | This file is part of GNU Make.
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| 4 |
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| 5 | GNU Make is free software; you can redistribute it and/or modify it under the
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| 6 | terms of the GNU General Public License as published by the Free Software
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| 7 | Foundation; either version 3 of the License, or (at your option) any later
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| 8 | version.
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| 9 |
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| 10 | GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
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| 11 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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| 12 | A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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| 13 |
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| 14 | You should have received a copy of the GNU General Public License along with
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| 15 | this program. If not, see <http://www.gnu.org/licenses/>. */
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| 16 |
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| 17 | #include <stdlib.h>
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| 18 | #include <windows.h>
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| 19 | #include "makeint.h"
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| 20 | #include "w32err.h"
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| 21 |
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| 22 | /*
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| 23 | * Description: the windows32 version of perror()
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| 24 | *
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| 25 | * Returns: a pointer to a static error
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| 26 | *
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| 27 | * Notes/Dependencies: I got this from
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| 28 | * comp.os.ms-windows.programmer.win32
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| 29 | */
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| 30 | const char *
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| 31 | map_windows32_error_to_string (DWORD ercode) {
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| 32 | /*
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| 33 | * We used to have an MSVC-specific '__declspec (thread)' qualifier
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| 34 | * here, with the following comment:
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| 35 | *
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| 36 | * __declspec (thread) necessary if you will use multiple threads on MSVC
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| 37 | *
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| 38 | * However, Make was never multithreaded on Windows (except when
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| 39 | * Ctrl-C is hit, in which case the main thread is stopped
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| 40 | * immediately, so it doesn't matter in this context). The functions
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| 41 | * on sub_proc.c that started and stopped additional threads were
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| 42 | * never used, and are now #ifdef'ed away. Until we need more than
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| 43 | * one thread, we have no problems with the following buffer being
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| 44 | * static. (If and when we do need it to be in thread-local storage,
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| 45 | * the corresponding GCC qualifier is '__thread'.)
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| 46 | */
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| 47 | static char szMessageBuffer[128];
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| 48 | /* Fill message buffer with a default message in
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| 49 | * case FormatMessage fails
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| 50 | */
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| 51 | #ifdef KMK /* Avoid unnecessary unsafe USER32.DLL sprintf. */
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| 52 | snprintf (szMessageBuffer, sizeof(szMessageBuffer), "Error %ld\n", ercode);
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| 53 | #else
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| 54 | wsprintf (szMessageBuffer, "Error %ld\n", ercode);
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| 55 | #endif
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| 56 |
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| 57 | /*
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| 58 | * Special code for winsock error handling.
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| 59 | */
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| 60 | if (ercode > WSABASEERR) {
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| 61 | #if 0
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| 62 | HMODULE hModule = GetModuleHandle("wsock32");
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| 63 | if (hModule != NULL) {
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| 64 | FormatMessage(FORMAT_MESSAGE_FROM_HMODULE,
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| 65 | hModule,
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| 66 | ercode,
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| 67 | LANG_NEUTRAL,
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| 68 | szMessageBuffer,
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| 69 | sizeof(szMessageBuffer),
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| 70 | NULL);
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| 71 | FreeLibrary(hModule);
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| 72 | }
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| 73 | #else
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| 74 | O (fatal, NILF, szMessageBuffer);
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| 75 | #endif
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| 76 | } else {
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| 77 | /*
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| 78 | * Default system message handling
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| 79 | */
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| 80 | FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,
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| 81 | NULL,
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| 82 | ercode,
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| 83 | LANG_NEUTRAL,
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| 84 | szMessageBuffer,
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| 85 | sizeof(szMessageBuffer),
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| 86 | NULL);
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| 87 | }
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| 88 | return szMessageBuffer;
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| 89 | }
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