| 1 | /* $Id: errmsg.cpp 76553 2019-01-01 01:45:53Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Status code messages.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2019 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | */
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| 26 |
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| 27 |
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| 28 | /*********************************************************************************************************************************
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| 29 | * Header Files *
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| 30 | *********************************************************************************************************************************/
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| 31 | #include <iprt/err.h>
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| 32 | #include "internal/iprt.h"
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| 33 |
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| 34 | #include <iprt/asm.h>
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| 35 | #include <iprt/string.h>
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| 36 | #include <iprt/err.h>
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| 37 | #include <VBox/err.h>
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| 38 |
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| 39 |
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| 40 | /*********************************************************************************************************************************
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| 41 | * Global Variables *
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| 42 | *********************************************************************************************************************************/
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| 43 | /** Array of messages.
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| 44 | * The data is generated by a sed script.
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| 45 | */
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| 46 | static const RTSTATUSMSG g_aStatusMsgs[] =
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| 47 | {
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| 48 | #if !defined(IPRT_NO_ERROR_DATA) && !defined(DOXYGEN_RUNNING)
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| 49 | # include "errmsgdata.h"
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| 50 | #else
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| 51 | { "Success.", "Success.", "VINF_SUCCESS", 0 },
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| 52 | #endif
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| 53 | { NULL, NULL, NULL, 0 }
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| 54 | };
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| 55 |
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| 56 |
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| 57 | /** Temporary buffers to format unknown messages in.
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| 58 | * @{
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| 59 | */
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| 60 | static char g_aszUnknownStr[4][64];
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| 61 | static RTSTATUSMSG g_aUnknownMsgs[4] =
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| 62 | {
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| 63 | { &g_aszUnknownStr[0][0], &g_aszUnknownStr[0][0], &g_aszUnknownStr[0][0], 0 },
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| 64 | { &g_aszUnknownStr[1][0], &g_aszUnknownStr[1][0], &g_aszUnknownStr[1][0], 0 },
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| 65 | { &g_aszUnknownStr[2][0], &g_aszUnknownStr[2][0], &g_aszUnknownStr[2][0], 0 },
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| 66 | { &g_aszUnknownStr[3][0], &g_aszUnknownStr[3][0], &g_aszUnknownStr[3][0], 0 }
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| 67 | };
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| 68 | /** Last used index in g_aUnknownMsgs. */
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| 69 | static volatile uint32_t g_iUnknownMsgs;
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| 70 | /** @} */
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| 71 |
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| 72 |
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| 73 | /**
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| 74 | * Get the message corresponding to a given status code.
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| 75 | *
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| 76 | * @returns Pointer to read-only message description.
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| 77 | * @param rc The status code.
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| 78 | */
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| 79 | RTDECL(PCRTSTATUSMSG) RTErrGet(int rc)
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| 80 | {
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| 81 | unsigned iFound = ~0U;
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| 82 | unsigned i;
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| 83 | for (i = 0; i < RT_ELEMENTS(g_aStatusMsgs) - 1; i++)
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| 84 | {
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| 85 | if (g_aStatusMsgs[i].iCode == rc)
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| 86 | {
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| 87 | /*
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| 88 | * Found a match.
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| 89 | * Since this isn't a unique key, we must check that it's not
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| 90 | * one of those start/end #defines before we return.
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| 91 | */
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| 92 | #define STR_ENDS_WITH(a_psz, a_cch, a_sz) \
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| 93 | ( (a_cch) >= sizeof(a_sz) && !strncmp((a_psz) + (a_cch) - sizeof(a_sz) + 1, RT_STR_TUPLE(a_sz)) )
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| 94 | size_t const cchDefine = strlen(g_aStatusMsgs[i].pszDefine);
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| 95 | if ( !STR_ENDS_WITH(g_aStatusMsgs[i].pszDefine, cchDefine, "_FIRST")
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| 96 | && !STR_ENDS_WITH(g_aStatusMsgs[i].pszDefine, cchDefine, "_LAST")
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| 97 | && !STR_ENDS_WITH(g_aStatusMsgs[i].pszDefine, cchDefine, "_LOWEST")
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| 98 | && !STR_ENDS_WITH(g_aStatusMsgs[i].pszDefine, cchDefine, "_HIGHEST")
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| 99 | )
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| 100 | return &g_aStatusMsgs[i];
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| 101 | iFound = i;
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| 102 | }
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| 103 | }
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| 104 | if (iFound != ~0U)
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| 105 | return &g_aStatusMsgs[iFound];
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| 106 |
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| 107 | /*
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| 108 | * Need to use the temporary stuff.
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| 109 | */
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| 110 | int iMsg = ASMAtomicXchgU32(&g_iUnknownMsgs, (g_iUnknownMsgs + 1) % RT_ELEMENTS(g_aUnknownMsgs));
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| 111 | RTStrPrintf(&g_aszUnknownStr[iMsg][0], sizeof(g_aszUnknownStr[iMsg]), "Unknown Status %d (%#x)", rc, rc);
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| 112 | return &g_aUnknownMsgs[iMsg];
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| 113 | }
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| 114 | RT_EXPORT_SYMBOL(RTErrGet);
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| 115 |
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