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|
/* $Id: VBoxSmcUtil-darwin.cpp $ */
/** @file
* VBoxSmcUtil - Quick hack for viewing SMC data on a mac.
*/
/*
* Copyright (C) 2013-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* SPDX-License-Identifier: GPL-3.0-only
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <iprt/asm.h>
#include <iprt/err.h>
#include <iprt/ctype.h>
#include <iprt/initterm.h>
#include <iprt/message.h>
#include <iprt/stream.h>
#include <iprt/string.h>
#include <mach/mach.h>
#include <IOKit/IOKitLib.h>
#include <IOKit/IOReturn.h>
#include <CoreFoundation/CoreFoundation.h>
#include <unistd.h>
/*********************************************************************************************************************************
* Structures and Typedefs *
*********************************************************************************************************************************/
enum
{
kSMCSuccess = 0,
kSMCError = 1
};
typedef enum
{
kSMCUserClientOpen = 0,
kSMCUserClientClose,
kSMCHandleYPCEvent,
kSMCPlaceholder1,
kSMCNumberOfMethods,
kSMCReadKey,
kSMCWriteKey,
kSMCGetKeyCount,
kSMCGetKeyFromIndex,
kSMCGetKeyInfo,
kSMCFireInterrupt,
kSMCGetPLimits,
kSMCGetVers,
kSMCPlaceholder2,
kSMCReadStatus,
kSMCReadResult,
kSMCVariableCommand
} KSMCFUNCTION;
typedef struct
{
RTUINT32U uKey;
struct
{
uint8_t uMajor;
uint8_t uMinor;
uint8_t uBuild;
uint8_t uReserved;
uint16_t uRelease;
} Version;
struct
{
uint16_t uVer;
uint16_t cb;
uint32_t uCpuPLimit;
uint32_t uGpuPLimit;
uint32_t uMemPLimit;
} SMCPLimitData;
struct
{
IOByteCount cbData;
RTUINT32U uDataType;
uint8_t fAttr;
} KeyInfo;
uint8_t uResult;
uint8_t fStatus;
uint8_t bData;
uint32_t u32Data;
uint8_t abValue[32];
} SMCPARAM;
/*********************************************************************************************************************************
* Global Variables *
*********************************************************************************************************************************/
io_service_t g_hSmcService = IO_OBJECT_NULL;
io_connect_t g_hSmcConnect = IO_OBJECT_NULL;
static int ConnectToSmc(void)
{
g_hSmcService = IOServiceGetMatchingService(kIOMasterPortDefault, IOServiceMatching("AppleSMC"));
if (g_hSmcService == IO_OBJECT_NULL)
return VERR_NOT_FOUND;
IOReturn rcIo = IOServiceOpen(g_hSmcService, mach_task_self(), 1, &g_hSmcConnect);
if (rcIo == kIOReturnSuccess && g_hSmcConnect != IO_OBJECT_NULL)
{
rcIo = IOConnectCallMethod(g_hSmcConnect, kSMCUserClientOpen, NULL, 0, NULL, 0, NULL, NULL, NULL, NULL);
if (rcIo == kIOReturnSuccess)
return VINF_SUCCESS;
RTMsgError("kSMCUserClientOpen failed: %#x (%#x)\n", rcIo, rcIo);
}
else
{
RTMsgError("IOServiceOpen failed: %#x (%#x)\n", rcIo, rcIo);
g_hSmcConnect = IO_OBJECT_NULL;
}
return RTErrConvertFromDarwinIO(rcIo);
}
static void DisconnectFromSmc(void)
{
if (g_hSmcConnect)
{
IOConnectCallMethod(g_hSmcConnect, kSMCUserClientClose, NULL, 0, NULL, 0, NULL, NULL, NULL, NULL);
IOServiceClose(g_hSmcConnect);
g_hSmcConnect = IO_OBJECT_NULL;
}
if (g_hSmcService)
{
IOServiceClose(g_hSmcService);
g_hSmcService = IO_OBJECT_NULL;
}
}
static int CallSmc(KSMCFUNCTION enmFunction, SMCPARAM *pIn, SMCPARAM *pOut)
{
RT_ZERO(*pOut);
pIn->bData = enmFunction;
size_t cbOut = sizeof(*pOut);
IOReturn rcIo = IOConnectCallStructMethod(g_hSmcConnect, kSMCHandleYPCEvent, pIn, sizeof(*pIn), pOut, &cbOut);
if (rcIo == kIOReturnSuccess)
return VINF_SUCCESS;
RTMsgError("SMC call %d failed: rcIo=%d (%#x)\n", enmFunction, rcIo, rcIo);
return RTErrConvertFromDarwinIO(rcIo);
}
static int GetKeyCount(uint32_t *pcKeys)
{
SMCPARAM In;
SMCPARAM Out;
RT_ZERO(In); RT_ZERO(Out);
In.KeyInfo.cbData = sizeof(uint32_t);
int rc = CallSmc(kSMCGetKeyCount, &In, &Out);
if (RT_SUCCESS(rc))
*pcKeys = RT_BE2H_U32(Out.u32Data);
else
*pcKeys = 1;
return rc;
}
static int GetKeyByIndex(uint32_t iKey, SMCPARAM *pKeyData)
{
SMCPARAM In;
RT_ZERO(In);
In.u32Data = iKey;
int rc = CallSmc(kSMCGetKeyFromIndex, &In, pKeyData);
if (RT_SUCCESS(rc))
{
if (pKeyData->uResult == kSMCSuccess)
{
SMCPARAM Tmp = *pKeyData;
/* Get the key info. */
RT_ZERO(In);
In.uKey.u = Tmp.uKey.u;
rc = CallSmc(kSMCGetKeyInfo, &In, pKeyData);
if (RT_SUCCESS(rc) && pKeyData->uResult == kSMCSuccess)
{
Tmp.KeyInfo = pKeyData->KeyInfo;
/* Get the key value. */
RT_ZERO(In);
In.uKey = Tmp.uKey;
In.KeyInfo = Tmp.KeyInfo;
rc = CallSmc(kSMCReadKey, &In, pKeyData);
if (RT_SUCCESS(rc) && (pKeyData->uResult == kSMCSuccess || pKeyData->uResult == 0x85 /* not readable */))
{
pKeyData->uKey = Tmp.uKey;
pKeyData->KeyInfo = Tmp.KeyInfo;
rc = VINF_SUCCESS;
}
else if (RT_SUCCESS(rc))
{
RTMsgError("kSMCReadKey failed on #%x/%.4s: %#x\n", iKey, Tmp.uKey.au8, pKeyData->uResult);
rc = VERR_IO_GEN_FAILURE;
}
}
else if (RT_SUCCESS(rc))
{
RTMsgError("kSMCGetKeyInfo failed on #%x/%.4s: %#x\n", iKey, Tmp.uKey.au8, pKeyData->uResult);
rc = VERR_IO_GEN_FAILURE;
}
}
else
{
RTMsgError("kSMCGetKeyFromIndex failed on #%x: %#x\n", iKey, pKeyData->uResult);
rc = VERR_IO_GEN_FAILURE;
}
}
return rc;
}
static int GetKeyByName(uint32_t uKey, SMCPARAM *pKeyData)
{
SMCPARAM In;
RT_ZERO(In);
In.uKey.u = uKey;
int rc = CallSmc(kSMCGetKeyInfo, &In, pKeyData);
if (RT_SUCCESS(rc) && pKeyData->uResult == kSMCSuccess)
{
SMCPARAM Tmp = *pKeyData;
/* Get the key value. */
RT_ZERO(In);
In.uKey.u = uKey;
In.KeyInfo = Tmp.KeyInfo;
rc = CallSmc(kSMCReadKey, &In, pKeyData);
if (RT_SUCCESS(rc) && (pKeyData->uResult == kSMCSuccess || pKeyData->uResult == 0x85 /* not readable */))
{
pKeyData->uKey.u = uKey;
pKeyData->KeyInfo = Tmp.KeyInfo;
rc = VINF_SUCCESS;
}
else if (RT_SUCCESS(rc))
{
RTMsgError("kSMCReadKey failed on %.4s: %#x\n", &uKey, pKeyData->uResult);
rc = VERR_IO_GEN_FAILURE;
}
}
else if (RT_SUCCESS(rc))
{
RTMsgError("kSMCGetKeyInfo failed on %.4s: %#x\n", &uKey, pKeyData->uResult);
rc = VERR_IO_GEN_FAILURE;
}
return rc;
}
static void DisplayKey(SMCPARAM *pKey)
{
pKey->uKey.u = RT_BE2H_U32(pKey->uKey.u);
pKey->KeyInfo.uDataType.u = RT_BE2H_U32(pKey->KeyInfo.uDataType.u);
RTPrintf("key=%4.4s type=%4.4s cb=%#04x fAttr=%#04x",
pKey->uKey.au8, pKey->KeyInfo.uDataType.au8, pKey->KeyInfo.cbData, pKey->KeyInfo.fAttr);
if (pKey->uResult == kSMCSuccess)
{
bool fPrintable = true;
for (uint32_t off = 0; off < pKey->KeyInfo.cbData; off++)
if (!RT_C_IS_PRINT(pKey->abValue[off]))
{
fPrintable = false;
break;
}
if (fPrintable)
RTPrintf(" %.*s\n", pKey->KeyInfo.cbData, pKey->abValue);
else
RTPrintf(" %.*Rhxs\n", pKey->KeyInfo.cbData, pKey->abValue);
}
else if (pKey->uResult == 0x85)
RTPrintf(" <not readable>\n");
}
static void DisplayKeyByName(uint32_t uKey)
{
SMCPARAM Key;
int rc = GetKeyByName(uKey, &Key);
if (RT_SUCCESS(rc))
DisplayKey(&Key);
}
int main(int argc, char **argv)
{
int rc = RTR3InitExe(argc, &argv, 0);
if (RT_FAILURE(rc))
return RTMsgInitFailure(rc);
rc = ConnectToSmc();
if (RT_SUCCESS(rc))
{
/*
* Dump the keys.
*/
uint32_t cKeys;
rc = GetKeyCount(&cKeys);
if (RT_SUCCESS(rc))
RTPrintf("#Keys=%u\n", cKeys);
for (uint32_t iKey = 0; iKey < cKeys; iKey++)
{
SMCPARAM Key;
rc = GetKeyByIndex(iKey, &Key);
if (RT_SUCCESS(rc))
{
RTPrintf("%#06x: ", iKey);
DisplayKey(&Key);
}
}
/*
* Known keys that doesn't make it into the enumeration.
*/
DisplayKeyByName('OSK0');
DisplayKeyByName('OSK1');
DisplayKeyByName('OSK2');
/* Negative checks, sometimes maybe. */
DisplayKeyByName('$Num');
DisplayKeyByName('MSTf');
DisplayKeyByName('MSDS');
DisplayKeyByName('LSOF');
}
DisconnectFromSmc();
if (RT_SUCCESS(rc))
return RTEXITCODE_SUCCESS;
return RTEXITCODE_FAILURE;
}
|
