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/* $Id$ */
/** @file
* IPRT - Utility for getting information about loaded kernel modules.
*/
/*
* Copyright (C) 2017-2022 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <iprt/krnlmod.h>
#include <iprt/assert.h>
#include <iprt/errcore.h>
#include <iprt/getopt.h>
#include <iprt/initterm.h>
#include <iprt/mem.h>
#include <iprt/message.h>
#include <iprt/path.h>
#include <iprt/stream.h>
#include <iprt/string.h>
/**
* Handles loading a kernel module by name.
*
* @returns Process status code.
* @param pszName THe module name to load.
*/
static RTEXITCODE rtKrnlModInfoHandleLoad(const char *pszName)
{
RTEXITCODE rcExit = RTEXITCODE_SUCCESS;
int rc = RTKrnlModLoadByName(pszName);
if (RT_SUCCESS(rc))
RTPrintf("Kernel module '%s' loaded successfully\n", pszName);
else
rcExit = RTMsgErrorExit(RTEXITCODE_FAILURE, "Error %Rrc loading kernel module '%s'", rc, pszName);
return rcExit;
}
/**
* Handles unloading a kernel module by name.
*
* @returns Process status code.
* @param pszName THe module name to load.
*/
static RTEXITCODE rtKrnlModInfoHandleUnload(const char *pszName)
{
RTEXITCODE rcExit = RTEXITCODE_SUCCESS;
int rc = RTKrnlModUnloadByName(pszName);
if (RT_SUCCESS(rc))
RTPrintf("Kernel module '%s' unloaded successfully\n", pszName);
else
rcExit = RTMsgErrorExit(RTEXITCODE_FAILURE, "Error %Rrc unloading kernel module '%s'", rc, pszName);
return rcExit;
}
/**
* Handles listing all loaded kernel modules.
*
* @returns Process status code.
*/
static RTEXITCODE rtKrnlModInfoHandleList(void)
{
RTEXITCODE rcExit = RTEXITCODE_SUCCESS;
uint32_t cKrnlMods = RTKrnlModLoadedGetCount();
if (cKrnlMods)
{
PRTKRNLMODINFO pahKrnlModInfo = (PRTKRNLMODINFO)RTMemAllocZ(cKrnlMods * sizeof(RTKRNLMODINFO));
if (pahKrnlModInfo)
{
int rc = RTKrnlModLoadedQueryInfoAll(pahKrnlModInfo, cKrnlMods, &cKrnlMods);
if (RT_SUCCESS(rc))
{
RTPrintf("Index Load address Size Ref count Name \n");
for (unsigned i = 0; i < cKrnlMods; i++)
{
RTKRNLMODINFO hKrnlModInfo = pahKrnlModInfo[i];
RTPrintf("%5u %#-18RHv %-10u %-10u %s\n", i,
RTKrnlModInfoGetLoadAddr(hKrnlModInfo),
RTKrnlModInfoGetSize(hKrnlModInfo),
RTKrnlModInfoGetRefCnt(hKrnlModInfo),
RTKrnlModInfoGetName(hKrnlModInfo));
RTKrnlModInfoRelease(hKrnlModInfo);
}
}
else
rcExit = RTMsgErrorExit(RTEXITCODE_FAILURE, "Error %Rrc querying kernel modules", rc);
RTMemFree(pahKrnlModInfo);
}
else
rcExit = RTMsgErrorExit(RTEXITCODE_FAILURE, "Error %Rrc allocating memory", VERR_NO_MEMORY);
}
return rcExit;
}
int main(int argc, char **argv)
{
int rc = RTR3InitExe(argc, &argv, 0);
if (RT_FAILURE(rc))
return RTMsgInitFailure(rc);
/*
* Parse arguments.
*/
static const RTGETOPTDEF s_aOptions[] =
{
{ "--load", 'l', RTGETOPT_REQ_STRING },
{ "--unload", 'u', RTGETOPT_REQ_STRING },
{ "--show-loaded", 's', RTGETOPT_REQ_NOTHING },
{ "--help", 'h', RTGETOPT_REQ_NOTHING }
};
RTGETOPTUNION ValueUnion;
RTGETOPTSTATE GetState;
RTGetOptInit(&GetState, argc, argv, s_aOptions, RT_ELEMENTS(s_aOptions), 1, RTGETOPTINIT_FLAGS_OPTS_FIRST);
while ((rc = RTGetOpt(&GetState, &ValueUnion)))
{
switch (rc)
{
case 'l':
return rtKrnlModInfoHandleLoad(ValueUnion.psz);
case 'u':
return rtKrnlModInfoHandleUnload(ValueUnion.psz);
case 's':
return rtKrnlModInfoHandleList();
case 'h':
RTPrintf("Usage: %s [options]\n"
"\n"
"Options:\n"
" -l, --load <module name>\n"
" Tries to load the given kernel module.\n"
" -s, --show-loaded\n"
" Lists all loaded kernel modules.\n"
, RTPathFilename(argv[0]));
return RTEXITCODE_SUCCESS;
case 'V':
RTPrintf("$Revision$\n");
return RTEXITCODE_SUCCESS;
default:
return RTGetOptPrintError(rc, &ValueUnion);
}
}
/* No arguments means listing all loaded kernel modules. */
return rtKrnlModInfoHandleList();
}
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