| 1 | /* $Id: RTSystemQueryDmiString-linux.cpp 29642 2010-05-18 14:44:56Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - RTSystemQueryDmiString, linux ring-3.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2010 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/system.h>
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| 32 | #include "internal/iprt.h"
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| 33 |
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| 34 | #include <iprt/err.h>
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| 35 | #include <iprt/assert.h>
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| 36 | #include <iprt/linux/sysfs.h>
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| 37 |
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| 38 | #include <errno.h>
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| 39 |
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| 40 |
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| 41 | RTDECL(int) RTSystemQueryDmiString(RTSYSDMISTR enmString, char *pszBuf, size_t cbBuf)
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| 42 | {
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| 43 | AssertPtrReturn(pszBuf, VERR_INVALID_POINTER);
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| 44 | AssertReturn(cbBuf > 0, VERR_INVALID_PARAMETER);
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| 45 | *pszBuf = '\0';
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| 46 | AssertReturn(enmString > RTSYSDMISTR_INVALID && enmString < RTSYSDMISTR_END, VERR_INVALID_PARAMETER);
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| 47 |
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| 48 | const char *pszSysFsName;
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| 49 | switch (enmString)
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| 50 | {
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| 51 | case RTSYSDMISTR_PRODUCT_NAME: pszSysFsName = "id/product_name"; break;
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| 52 | case RTSYSDMISTR_PRODUCT_VERSION: pszSysFsName = "id/product_version"; break;
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| 53 | case RTSYSDMISTR_PRODUCT_UUID: pszSysFsName = "id/product_uuid"; break;
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| 54 | case RTSYSDMISTR_PRODUCT_SERIAL: pszSysFsName = "id/product_serial"; break;
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| 55 | case RTSYSDMISTR_MANUFACTURER: pszSysFsName = "id/sys_vendor"; break;
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| 56 | default:
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| 57 | return VERR_NOT_SUPPORTED;
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| 58 | }
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| 59 |
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| 60 | int rc;
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| 61 | int fd = RTLinuxSysFsOpen("devices/virtual/dmi/%s", pszSysFsName);
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| 62 | if (fd < 0)
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| 63 | fd = RTLinuxSysFsOpen("class/dmi/%s", pszSysFsName);
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| 64 | if (fd >= 0)
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| 65 | {
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| 66 | size_t cbRead;
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| 67 | rc = RTLinuxSysFsReadFile(fd, pszBuf, cbBuf, &cbRead);
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| 68 | if (RT_SUCCESS(rc) || rc == VERR_BUFFER_OVERFLOW)
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| 69 | {
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| 70 | /* The file we're reading may end with a newline, remove it. */
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| 71 | if (cbRead == cbBuf)
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| 72 | pszBuf[cbRead - 1] = '\0';
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| 73 | else
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| 74 | {
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| 75 | AssertRC(rc);
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| 76 | pszBuf[cbRead] = '\0';
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| 77 | if (cbRead > 0 && pszBuf[cbRead - 1] == '\n')
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| 78 | pszBuf[cbRead - 1] = '\0';
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| 79 | }
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| 80 | }
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| 81 | RTLinuxSysFsClose(fd);
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| 82 | }
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| 83 | else
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| 84 | {
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| 85 | rc = RTErrConvertFromErrno(errno);
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| 86 | switch (rc)
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| 87 | {
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| 88 | case VINF_SUCCESS:
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| 89 | AssertFailed();
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| 90 | case VERR_FILE_NOT_FOUND:
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| 91 | case VERR_PATH_NOT_FOUND:
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| 92 | case VERR_IS_A_DIRECTORY:
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| 93 | rc = VERR_NOT_SUPPORTED;
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| 94 | break;
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| 95 | case VERR_PERMISSION_DENIED:
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| 96 | case VERR_ACCESS_DENIED:
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| 97 | rc = VERR_ACCESS_DENIED;
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| 98 | break;
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| 99 | }
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| 100 | }
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| 101 |
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| 102 | return rc;
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| 103 | }
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| 104 | RT_EXPORT_SYMBOL(RTSystemQueryDmiString);
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| 105 |
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