1 | /* $Id: tstSSM-2.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
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2 | /** @file
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3 | * Saved State Manager Testcase: Extract the content of a saved state.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2015-2024 Oracle and/or its affiliates.
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8 | *
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9 | * This file is part of VirtualBox base platform packages, as
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10 | * available from https://www.virtualbox.org.
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11 | *
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12 | * This program is free software; you can redistribute it and/or
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13 | * modify it under the terms of the GNU General Public License
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14 | * as published by the Free Software Foundation, in version 3 of the
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15 | * License.
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16 | *
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17 | * This program is distributed in the hope that it will be useful, but
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18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | * General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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24 | *
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25 | * SPDX-License-Identifier: GPL-3.0-only
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26 | */
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27 |
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28 |
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29 | /*********************************************************************************************************************************
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30 | * Header Files *
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31 | *********************************************************************************************************************************/
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32 | #include <VBox/vmm/ssm.h>
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33 |
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34 | #include <VBox/log.h>
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35 | #include <iprt/assert.h>
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36 | #include <iprt/getopt.h>
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37 | #include <iprt/errcore.h>
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38 | #include <iprt/file.h>
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39 | #include <iprt/path.h>
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40 | #include <iprt/stream.h>
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41 | #include <iprt/initterm.h>
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42 |
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43 | static RTEXITCODE extractUnit(const char *pszFilename, const char *pszUnitname, const char *pszOutputFilename)
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44 | {
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45 | PSSMHANDLE pSSM;
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46 | int rc = SSMR3Open(pszFilename, NULL /*pStreamOps*/, NULL /*pvStreamOps*/, 0, &pSSM);
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47 | RTEXITCODE rcExit = RTEXITCODE_FAILURE;
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48 | if (RT_SUCCESS(rc))
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49 | {
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50 | RTFILE hFile;
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51 | rc = RTFileOpen(&hFile, pszOutputFilename, RTFILE_O_DENY_NONE | RTFILE_O_WRITE | RTFILE_O_CREATE);
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52 | if (RT_SUCCESS(rc))
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53 | {
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54 | uint32_t version = 0;
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55 | rc = SSMR3Seek(pSSM, pszUnitname, 0 /* iInstance */, &version);
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56 | size_t cbUnit = 0;
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57 | if (RT_SUCCESS(rc))
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58 | {
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59 | for (;;)
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60 | {
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61 | uint8_t u8;
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62 | rc = SSMR3GetU8(pSSM, &u8);
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63 | if (RT_FAILURE(rc))
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64 | break;
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65 | size_t cbWritten;
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66 | rc = RTFileWrite(hFile, &u8, sizeof(u8), &cbWritten);
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67 | cbUnit++;
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68 | }
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69 | RTPrintf("Unit size %zu bytes, version %d\n", cbUnit, version);
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70 | }
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71 | else
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72 | RTPrintf("Cannot find unit '%s' (%Rrc)\n", pszUnitname, rc);
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73 | RTFileClose(hFile);
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74 | }
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75 | else
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76 | RTPrintf("Cannot open output file '%s' (%Rrc)\n", pszOutputFilename, rc);
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77 | SSMR3Close(pSSM);
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78 | }
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79 | else
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80 | RTPrintf("Cannot open SSM file '%s' (%Rrc)\n", pszFilename, rc);
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81 | return rcExit;
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82 | }
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83 |
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84 | int main(int argc, char **argv)
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85 | {
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86 | int rc = RTR3InitExe(argc, &argv, 0);
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87 | AssertRCReturn(rc, RTEXITCODE_INIT);
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88 |
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89 | if (argc != 4)
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90 | {
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91 | RTPrintf("Usage: %s <SSM filename> <SSM unitname> <outfile>\n", RTPathFilename(argv[0]));
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92 | /* don't fail by default */
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93 | return RTEXITCODE_SUCCESS;
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94 | }
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95 | return extractUnit(argv[1], argv[2], argv[3]);
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96 | }
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