VirtualBox

source: vbox/trunk/src/VBox/Runtime/r3/posix/errvars-posix.cpp@ 76553

Last change on this file since 76553 was 76553, checked in by vboxsync, 6 years ago

scm --update-copyright-year

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 2.5 KB
Line 
1/* $Id: errvars-posix.cpp 76553 2019-01-01 01:45:53Z vboxsync $ */
2/** @file
3 * IPRT - Save and Restore Error Variables, POSIX Ring-3.
4 */
5
6/*
7 * Copyright (C) 2011-2019 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 <netdb.h>
32#include <errno.h>
33
34#include <iprt/errcore.h>
35#include "internal/iprt.h"
36
37#include <iprt/assert.h>
38#include "internal/magics.h"
39
40
41
42RTDECL(PRTERRVARS) RTErrVarsSave(PRTERRVARS pVars)
43{
44 pVars->ai32Vars[0] = RTERRVARS_MAGIC;
45 pVars->ai32Vars[1] = errno;
46 pVars->ai32Vars[2] = h_errno;
47 return pVars;
48}
49
50
51RTDECL(void) RTErrVarsRestore(PCRTERRVARS pVars)
52{
53 AssertReturnVoid(pVars->ai32Vars[0] == RTERRVARS_MAGIC);
54 h_errno = pVars->ai32Vars[2];
55 errno = pVars->ai32Vars[1];
56}
57
58
59RTDECL(bool) RTErrVarsAreEqual(PCRTERRVARS pVars1, PCRTERRVARS pVars2)
60{
61 Assert(pVars1->ai32Vars[0] == RTERRVARS_MAGIC);
62 Assert(pVars2->ai32Vars[0] == RTERRVARS_MAGIC);
63
64 return pVars1->ai32Vars[0] == pVars2->ai32Vars[0]
65 && pVars1->ai32Vars[1] == pVars2->ai32Vars[1]
66 && pVars1->ai32Vars[2] == pVars2->ai32Vars[2];
67}
68
69
70RTDECL(bool) RTErrVarsHaveChanged(PCRTERRVARS pVars)
71{
72 Assert(pVars->ai32Vars[0] == RTERRVARS_MAGIC);
73
74 return pVars->ai32Vars[0] != RTERRVARS_MAGIC
75 || pVars->ai32Vars[1] != errno
76 || pVars->ai32Vars[2] != h_errno;
77}
78
Note: See TracBrowser for help on using the repository browser.

© 2024 Oracle Support Privacy / Do Not Sell My Info Terms of Use Trademark Policy Automated Access Etiquette