| 1 | /* $Id: errvars-win.cpp 37233 2011-05-27 13:31:57Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - Save and Restore Error Variables, Windows Ring-3.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2011 Oracle Corporation
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | * General Public License (GPL) as published by the Free Software
|
|---|
| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | *
|
|---|
| 17 | * The contents of this file may alternatively be used under the terms
|
|---|
| 18 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 20 | * VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 21 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 22 | *
|
|---|
| 23 | * You may elect to license modified versions of this file under the
|
|---|
| 24 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 25 | */
|
|---|
| 26 |
|
|---|
| 27 |
|
|---|
| 28 | /*******************************************************************************
|
|---|
| 29 | * Header Files *
|
|---|
| 30 | *******************************************************************************/
|
|---|
| 31 | #include <Winsock2.h>
|
|---|
| 32 | #include <errno.h>
|
|---|
| 33 |
|
|---|
| 34 | #include <iprt/err.h>
|
|---|
| 35 | #include "internal/iprt.h"
|
|---|
| 36 |
|
|---|
| 37 | #include <iprt/assert.h>
|
|---|
| 38 | #include "internal/magics.h"
|
|---|
| 39 |
|
|---|
| 40 |
|
|---|
| 41 |
|
|---|
| 42 | RTDECL(PRTERRVARS) RTErrVarsSave(PRTERRVARS pVars)
|
|---|
| 43 | {
|
|---|
| 44 | pVars->ai32Vars[0] = RTERRVARS_MAGIC;
|
|---|
| 45 | pVars->ai32Vars[1] = GetLastError();
|
|---|
| 46 | pVars->ai32Vars[2] = WSAGetLastError();
|
|---|
| 47 | pVars->ai32Vars[3] = errno;
|
|---|
| 48 | return pVars;
|
|---|
| 49 | }
|
|---|
| 50 |
|
|---|
| 51 |
|
|---|
| 52 | RTDECL(void) RTErrVarsRestore(PCRTERRVARS pVars)
|
|---|
| 53 | {
|
|---|
| 54 | AssertReturnVoid(pVars->ai32Vars[0] == RTERRVARS_MAGIC);
|
|---|
| 55 | errno = pVars->ai32Vars[3];
|
|---|
| 56 | if (pVars->ai32Vars[2] != WSANOTINITIALISED) /* just an idea... */
|
|---|
| 57 | WSASetLastError(pVars->ai32Vars[2]);
|
|---|
| 58 | SetLastError(pVars->ai32Vars[1]);
|
|---|
| 59 | }
|
|---|
| 60 |
|
|---|
| 61 |
|
|---|
| 62 | RTDECL(bool) RTErrVarsAreEqual(PCRTERRVARS pVars1, PCRTERRVARS pVars2)
|
|---|
| 63 | {
|
|---|
| 64 | Assert(pVars1->ai32Vars[0] == RTERRVARS_MAGIC);
|
|---|
| 65 | Assert(pVars2->ai32Vars[0] == RTERRVARS_MAGIC);
|
|---|
| 66 |
|
|---|
| 67 | return pVars1->ai32Vars[0] == pVars2->ai32Vars[0]
|
|---|
| 68 | && pVars1->ai32Vars[1] == pVars2->ai32Vars[1]
|
|---|
| 69 | && pVars1->ai32Vars[2] == pVars2->ai32Vars[2]
|
|---|
| 70 | && pVars1->ai32Vars[3] == pVars2->ai32Vars[3];
|
|---|
| 71 | }
|
|---|
| 72 |
|
|---|
| 73 |
|
|---|
| 74 | RTDECL(bool) RTErrVarsHaveChanged(PCRTERRVARS pVars)
|
|---|
| 75 | {
|
|---|
| 76 | Assert(pVars->ai32Vars[0] == RTERRVARS_MAGIC);
|
|---|
| 77 |
|
|---|
| 78 | return pVars->ai32Vars[0] != RTERRVARS_MAGIC
|
|---|
| 79 | || pVars->ai32Vars[1] != GetLastError()
|
|---|
| 80 | || pVars->ai32Vars[2] != WSAGetLastError()
|
|---|
| 81 | || pVars->ai32Vars[3] != errno;
|
|---|
| 82 | }
|
|---|
| 83 |
|
|---|
