| 1 | /* $Id: tstSSM-2.cpp 107808 2025-01-16 10:35:41Z 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 | if (RT_FAILURE(rc))
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| 68 | RTPrintf("Writing unit '%s' to '%s' failed with %Rrc\n",
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| 69 | pszUnitname, pszOutputFilename, rc);
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| 70 | cbUnit++;
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| 71 | }
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| 72 | RTPrintf("Unit size %zu bytes, version %d\n", cbUnit, version);
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| 73 | }
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| 74 | else
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| 75 | RTPrintf("Cannot find unit '%s' (%Rrc)\n", pszUnitname, rc);
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| 76 | RTFileClose(hFile);
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| 77 | }
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| 78 | else
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| 79 | RTPrintf("Cannot open output file '%s' (%Rrc)\n", pszOutputFilename, rc);
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| 80 | SSMR3Close(pSSM);
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| 81 | }
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| 82 | else
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| 83 | RTPrintf("Cannot open SSM file '%s' (%Rrc)\n", pszFilename, rc);
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| 84 | return rcExit;
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| 85 | }
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| 86 |
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| 87 | int main(int argc, char **argv)
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| 88 | {
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| 89 | int rc = RTR3InitExe(argc, &argv, 0);
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| 90 | AssertRCReturn(rc, RTEXITCODE_INIT);
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| 91 |
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| 92 | if (argc != 4)
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| 93 | {
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| 94 | RTPrintf("Usage: %s <SSM filename> <SSM unitname> <outfile>\n", RTPathFilename(argv[0]));
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| 95 | /* don't fail by default */
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| 96 | return RTEXITCODE_SUCCESS;
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| 97 | }
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| 98 | return extractUnit(argv[1], argv[2], argv[3]);
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| 99 | }
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