1 | /* $Id: tstGlobalConfig.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */
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2 | /** @file
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3 | * Ring-3 Management program for the GCFGM mock-up.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2007-2020 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 |
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18 |
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19 | /*********************************************************************************************************************************
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20 | * Header Files *
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21 | *********************************************************************************************************************************/
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22 | #include <VBox/vmm/vmm.h>
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23 | #include <iprt/errcore.h>
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24 | #include <iprt/assert.h>
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25 | #include <iprt/initterm.h>
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26 | #include <iprt/stream.h>
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27 | #include <iprt/string.h>
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28 |
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29 |
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30 | /**
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31 | * Prints the usage and returns 1.
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32 | * @return 1
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33 | */
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34 | static int Usage(void)
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35 | {
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36 | RTPrintf("usage: tstGlobalConfig <value-name> [new value]\n");
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37 | return 1;
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38 | }
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39 |
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40 |
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41 | /**
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42 | * Entry point.
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43 | */
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44 | extern "C" DECLEXPORT(int) TrustedMain(int argc, char **argv, char **envp)
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45 | {
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46 | RT_NOREF1(envp);
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47 | RTR3InitExe(argc, &argv, 0);
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48 |
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49 | /*
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50 | * Parse args, building the request as we do so.
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51 | */
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52 | if (argc <= 1)
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53 | return Usage();
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54 | if (argc > 3)
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55 | {
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56 | RTPrintf("syntax error: too many arguments\n");
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57 | Usage();
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58 | return 1;
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59 | }
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60 |
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61 | VMMR0OPERATION enmOp = VMMR0_DO_GCFGM_QUERY_VALUE;
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62 | GCFGMVALUEREQ Req;
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63 | memset(&Req, 0, sizeof(Req));
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64 | Req.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
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65 | Req.Hdr.cbReq = sizeof(Req);
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66 |
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67 | /* arg[1] = szName */
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68 | size_t cch = strlen(argv[1]);
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69 | if (cch < 2 || argv[1][0] != '/')
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70 | {
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71 | RTPrintf("syntax error: malformed name '%s'\n", argv[1]);
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72 | return 1;
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73 | }
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74 | if (cch >= sizeof(Req.szName))
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75 | {
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76 | RTPrintf("syntax error: the name '%s' is too long. (max %zu chars)\n", argv[1], sizeof(Req.szName) - 1);
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77 | return 1;
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78 | }
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79 | memcpy(&Req.szName[0], argv[1], cch + 1);
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80 |
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81 | /* argv[2] = u64SetValue; optional */
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82 | if (argc == 3)
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83 | {
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84 | char *pszNext = NULL;
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85 | int rc = RTStrToUInt64Ex(argv[2], &pszNext, 0, &Req.u64Value);
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86 | if (RT_FAILURE(rc) || *pszNext)
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87 | {
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88 | RTPrintf("syntax error: '%s' didn't convert successfully to a number. (%Rrc,'%s')\n", argv[2], rc, pszNext);
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89 | return 1;
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90 | }
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91 | enmOp = VMMR0_DO_GCFGM_SET_VALUE;
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92 | }
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93 |
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94 | /*
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95 | * Open the session, load ring-0 and issue the request.
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96 | */
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97 | PSUPDRVSESSION pSession;
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98 | int rc = SUPR3Init(&pSession);
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99 | if (RT_FAILURE(rc))
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100 | {
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101 | RTPrintf("tstGlobalConfig: SUPR3Init -> %Rrc\n", rc);
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102 | return 1;
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103 | }
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104 |
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105 | rc = SUPR3LoadVMM("./VMMR0.r0");
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106 | if (RT_SUCCESS(rc))
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107 | {
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108 | Req.pSession = pSession;
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109 | rc = SUPR3CallVMMR0Ex(NIL_RTR0PTR, NIL_VMCPUID, enmOp, 0, &Req.Hdr);
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110 | if (RT_SUCCESS(rc))
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111 | {
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112 | if (enmOp == VMMR0_DO_GCFGM_QUERY_VALUE)
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113 | RTPrintf("%s = %RU64 (%#RX64)\n", Req.szName, Req.u64Value, Req.u64Value);
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114 | else
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115 | RTPrintf("Successfully set %s = %RU64 (%#RX64)\n", Req.szName, Req.u64Value, Req.u64Value);
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116 | }
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117 | else if (enmOp == VMMR0_DO_GCFGM_QUERY_VALUE)
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118 | RTPrintf("error: Failed to query '%s', rc=%Rrc\n", Req.szName, rc);
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119 | else
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120 | RTPrintf("error: Failed to set '%s' to %RU64, rc=%Rrc\n", Req.szName, Req.u64Value, rc);
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121 |
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122 | }
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123 | SUPR3Term(false /*fForced*/);
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124 |
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125 | return RT_FAILURE(rc) ? 1 : 0;
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126 | }
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127 |
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128 |
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129 | #if !defined(VBOX_WITH_HARDENING) || !defined(RT_OS_WINDOWS)
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130 | /**
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131 | * Main entry point.
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132 | */
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133 | int main(int argc, char **argv, char **envp)
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134 | {
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135 | return TrustedMain(argc, argv, envp);
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136 | }
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137 | #endif
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138 |
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