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kextstat_main.c
490 lines (412 loc) · 16.4 KB
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kextstat_main.c
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/*
* Copyright (c) 2006, 2014 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#include <IOKit/kext/OSKext.h>
#include <IOKit/kext/OSKextPrivate.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/param.h>
#include <mach/mach.h>
#include <mach/mach_error.h>
#include <mach/mach_host.h>
#include "kextstat_main.h"
// not a utility.[ch] customer yet
static const char * progname = "(unknown)";
void printPList_new(FILE * stream, CFTypeRef aPlist);
/*******************************************************************************
*
*******************************************************************************/
ExitStatus main(int argc, char * const * argv)
{
ExitStatus result = EX_OK;
KextstatArgs toolArgs;
CFDictionaryRef * kextInfoList = NULL; // must free
CFIndex count, i;
if (argv[0]) {
progname = argv[0];
}
/* Set the OSKext log callback right away.
*/
OSKextSetLogOutputFunction(&tool_log);
result = readArgs(argc, argv, &toolArgs);
if (result != EX_OK) {
if (result == kKextstatExitHelp) {
result = EX_OK;
}
goto finish;
}
toolArgs.runningKernelArch = OSKextGetRunningKernelArchitecture();
if (!toolArgs.runningKernelArch) {
result = EX_OSERR;
goto finish;
}
toolArgs.loadedKextInfo = OSKextCopyLoadedKextInfo(toolArgs.bundleIDs,
NULL /* all info */);
if (!toolArgs.loadedKextInfo) {
OSKextLog(/* kext */ NULL,
kOSKextLogErrorLevel | kOSKextLogGeneralFlag | kOSKextLogIPCFlag,
"Couldn't get list of loaded kexts from kernel.");
result = EX_OSERR;
goto finish;
}
if (!toolArgs.flagListOnly) {
printf("Index Refs Address ");
if (toolArgs.runningKernelArch->cputype & CPU_ARCH_ABI64) {
printf(" ");
}
printf("Size Wired ");
if (toolArgs.flagShowArchitecture) {
printf("Architecture ");
}
printf("Name (Version) <Linked Against>\n");
}
count = CFDictionaryGetCount(toolArgs.loadedKextInfo);
if (!count) {
goto finish;
}
kextInfoList = (CFDictionaryRef *)malloc(count * sizeof(CFDictionaryRef));
if (!kextInfoList) {
OSKextLogMemError();
result = EX_OSERR;
goto finish;
}
CFDictionaryGetKeysAndValues(toolArgs.loadedKextInfo, /* keys */ NULL,
(const void **)kextInfoList);
qsort(kextInfoList, count, sizeof(CFDictionaryRef), &compareKextInfo);
for (i = 0; i < count; i++) {
printKextInfo(kextInfoList[i], &toolArgs);
}
finish:
exit(result);
SAFE_FREE(kextInfoList);
return result;
}
/*******************************************************************************
*******************************************************************************/
ExitStatus readArgs(int argc, char * const * argv, KextstatArgs * toolArgs)
{
ExitStatus result = EX_USAGE;
CFStringRef scratchString = NULL; // must release
int optChar = 0;
bzero(toolArgs, sizeof(*toolArgs));
/*****
* Allocate collection objects needed for command line argument processing.
*/
if (!createCFMutableArray(&toolArgs->bundleIDs, &kCFTypeArrayCallBacks)) {
goto finish;
}
/*****
* Process command-line arguments.
*/
result = EX_USAGE;
while ((optChar = getopt_long_only(argc, argv, kOptChars,
sOptInfo, NULL)) != -1) {
SAFE_RELEASE_NULL(scratchString);
switch (optChar) {
case kOptHelp:
usage(kUsageLevelFull);
result = kKextstatExitHelp;
goto finish;
break;
case kOptNoKernelComponents:
toolArgs->flagNoKernelComponents = true;
break;
case kOptListOnly:
toolArgs->flagListOnly = true;
break;
case kOptBundleIdentifier:
scratchString = CFStringCreateWithCString(kCFAllocatorDefault,
optarg, kCFStringEncodingUTF8);
if (!scratchString) {
OSKextLogMemError();
result = EX_OSERR;
goto finish;
}
CFArrayAppendValue(toolArgs->bundleIDs, scratchString);
break;
case kOptArchitecture:
toolArgs->flagShowArchitecture = true;
break;
}
}
argc -= optind;
argv += optind;
if (argc) {
OSKextLog(/* kext */ NULL,
kOSKextLogErrorLevel | kOSKextLogGeneralFlag,
"Extra arguments starting at %s....", argv[0]);
usage(kUsageLevelBrief);
goto finish;
}
result = EX_OK;
finish:
SAFE_RELEASE_NULL(scratchString);
if (result == EX_USAGE) {
usage(kUsageLevelBrief);
}
return result;
}
/*******************************************************************************
*******************************************************************************/
#define kStringInvalidShort "??"
#define kStringInvalidLong "????"
void printKextInfo(CFDictionaryRef kextInfo, KextstatArgs * toolArgs)
{
CFBooleanRef isKernelComponent = NULL; // do not release
CFNumberRef loadTag = NULL; // do not release
CFNumberRef retainCount = NULL; // do not release
CFNumberRef loadAddress = NULL; // do not release
CFNumberRef loadSize = NULL; // do not release
CFNumberRef wiredSize = NULL; // do not release
CFStringRef bundleID = NULL; // do not release
CFStringRef bundleVersion = NULL; // do not release
CFArrayRef dependencyLoadTags = NULL; // do not release
CFMutableArrayRef sortedLoadTags = NULL; // must release
uint32_t loadTagValue = kOSKextInvalidLoadTag;
uint32_t retainCountValue = (uint32_t)-1;
uint64_t loadAddressValue = (uint64_t)-1;
uint32_t loadSizeValue = (uint32_t)-1;
uint32_t wiredSizeValue = (uint32_t)-1;
uint32_t cpuTypeValue = (uint32_t)-1;
uint32_t cpuSubTypeValue = (uint32_t)-1;
char * bundleIDCString = NULL; // must free
char * bundleVersionCString = NULL; // must free
CFIndex count, i;
loadTag = (CFNumberRef)CFDictionaryGetValue(kextInfo,
CFSTR(kOSBundleLoadTagKey));
retainCount = (CFNumberRef)CFDictionaryGetValue(kextInfo,
CFSTR(kOSBundleRetainCountKey));
loadAddress = (CFNumberRef)CFDictionaryGetValue(kextInfo,
CFSTR(kOSBundleLoadAddressKey));
loadSize = (CFNumberRef)CFDictionaryGetValue(kextInfo,
CFSTR(kOSBundleLoadSizeKey));
wiredSize = (CFNumberRef)CFDictionaryGetValue(kextInfo,
CFSTR(kOSBundleWiredSizeKey));
bundleID = (CFStringRef)CFDictionaryGetValue(kextInfo,
kCFBundleIdentifierKey);
bundleVersion = (CFStringRef)CFDictionaryGetValue(kextInfo,
kCFBundleVersionKey);
dependencyLoadTags = (CFArrayRef)CFDictionaryGetValue(kextInfo,
CFSTR(kOSBundleDependenciesKey));
/* If the -k flag was given, skip any kernel components unless
* they are explicitly requested.
*/
if (toolArgs->flagNoKernelComponents) {
isKernelComponent = (CFBooleanRef)CFDictionaryGetValue(kextInfo,
CFSTR(kOSKernelResourceKey));
if (isKernelComponent && CFBooleanGetValue(isKernelComponent)) {
if (bundleID &&
kCFNotFound == CFArrayGetFirstIndexOfValue(toolArgs->bundleIDs,
RANGE_ALL(toolArgs->bundleIDs), bundleID)) {
goto finish;
}
}
}
if (!getNumValue(loadTag, kCFNumberSInt32Type, &loadTagValue)) {
loadTagValue = kOSKextInvalidLoadTag;
}
/* Never print the info for the kernel (loadTag 0, id __kernel__).
*/
if (loadTagValue == 0) {
goto finish;
}
if (!getNumValue(retainCount, kCFNumberSInt32Type, &retainCountValue)) {
retainCountValue = (uint32_t)-1;
}
if (!getNumValue(loadAddress, kCFNumberSInt64Type, &loadAddressValue)) {
loadAddressValue = (uint64_t)-1;
}
if (!getNumValue(loadSize, kCFNumberSInt32Type, &loadSizeValue)) {
loadSizeValue = (uint32_t)-1;
}
if (!getNumValue(wiredSize, kCFNumberSInt32Type, &wiredSizeValue)) {
wiredSizeValue = (uint32_t)-1;
}
if (!getNumValue(((CFNumberRef)CFDictionaryGetValue(kextInfo, CFSTR(kOSBundleCPUTypeKey))), kCFNumberSInt32Type, &cpuTypeValue)) {
cpuTypeValue = (uint32_t)-1;
}
if (!getNumValue(((CFNumberRef)CFDictionaryGetValue(kextInfo, CFSTR(kOSBundleCPUSubtypeKey))), kCFNumberSInt32Type, &cpuSubTypeValue)) {
cpuSubTypeValue = (uint32_t)-1;
}
bundleIDCString = createUTF8CStringForCFString(bundleID);
bundleVersionCString = createUTF8CStringForCFString(bundleVersion);
/* First column has no leading space.
*
* These field widths are from the old kextstat, may want to change them.
*/
if (loadTagValue == kOSKextInvalidLoadTag) {
fprintf(stdout, "%5s", kStringInvalidShort);
} else {
fprintf(stdout, "%5d", loadTagValue);
}
if (retainCountValue == (uint32_t)-1) {
fprintf(stdout, " %4s", kStringInvalidShort);
} else {
fprintf(stdout, " %4d", retainCountValue);
}
if (toolArgs->runningKernelArch->cputype & CPU_ARCH_ABI64) {
if (loadAddressValue == (uint64_t)-1) {
fprintf(stdout, " %-18s", kStringInvalidLong);
} else {
fprintf(stdout, " %#-18llx", (uint64_t)loadAddressValue);
}
} else {
if (loadAddressValue == (uint64_t)-1) {
fprintf(stdout, " %-10s", kStringInvalidLong);
} else {
fprintf(stdout, " %#-10x", (uint32_t)loadAddressValue);
}
}
if (loadSizeValue == (uint32_t)-1) {
fprintf(stdout, " %-10s", kStringInvalidLong);
} else {
fprintf(stdout, " %#-10x", loadSizeValue);
}
if (wiredSizeValue == (uint32_t)-1) {
fprintf(stdout, " %-10s", kStringInvalidLong);
} else {
fprintf(stdout, " %#-10x", wiredSizeValue);
}
if (toolArgs->flagShowArchitecture) {
// include kext cputype/cpusubtype info
if (cpuTypeValue == (uint32_t) -1) {
fprintf(stdout, " %10s/%-7s", kStringInvalidLong, kStringInvalidLong);
}
else {
const NXArchInfo * archName = NXGetArchInfoFromCpuType(cpuTypeValue, cpuSubTypeValue);
if (archName != NULL) {
fprintf(stdout, " %-18s", archName->name);
}
else {
fprintf(stdout, " %#010x/%#-7x", cpuTypeValue, cpuSubTypeValue);
}
}
}
fprintf(stdout, " %s",
bundleIDCString ? bundleIDCString : kStringInvalidLong);
fprintf(stdout, " (%s)",
bundleVersionCString ? bundleVersionCString : kStringInvalidLong);
if (dependencyLoadTags && CFArrayGetCount(dependencyLoadTags)) {
sortedLoadTags = CFArrayCreateMutableCopy(kCFAllocatorDefault, 0,
dependencyLoadTags);
if (!sortedLoadTags) {
OSKextLogMemError();
goto finish;
}
CFArraySortValues(sortedLoadTags, RANGE_ALL(sortedLoadTags),
&compareNumbers, /* context */ NULL);
fprintf(stdout, " <");
count = CFArrayGetCount(sortedLoadTags);
for (i = 0; i < count; i++) {
loadTag = (CFNumberRef)CFArrayGetValueAtIndex(sortedLoadTags, i);
if (!getNumValue(loadTag, kCFNumberSInt32Type, &loadTagValue)) {
loadTagValue = kOSKextInvalidLoadTag;
}
if (loadTagValue == kOSKextInvalidLoadTag) {
fprintf(stdout, "%s%s", i == 0 ? "" : " ", kStringInvalidShort);
} else {
fprintf(stdout, "%s%d", i == 0 ? "" : " ", loadTagValue);
}
}
fprintf(stdout, ">");
}
fprintf(stdout, "\n");
finish:
SAFE_RELEASE(sortedLoadTags);
SAFE_FREE(bundleIDCString);
SAFE_FREE(bundleVersionCString);
return;
}
/*******************************************************************************
*******************************************************************************/
Boolean getNumValue(CFNumberRef aNumber, CFNumberType type, void * valueOut)
{
if (aNumber && (CFNumberGetTypeID() == CFGetTypeID(aNumber))) {
return CFNumberGetValue(aNumber, type, valueOut);
}
return false;
}
/*******************************************************************************
*******************************************************************************/
int compareKextInfo(const void * vKextInfo1, const void * vKextInfo2)
{
int result = 0;
CFDictionaryRef kextInfo1 = *(CFDictionaryRef *)vKextInfo1;
CFDictionaryRef kextInfo2 = *(CFDictionaryRef *)vKextInfo2;
CFNumberRef loadTag1 = CFDictionaryGetValue(kextInfo1, CFSTR(kOSBundleLoadTagKey));
CFNumberRef loadTag2 = CFDictionaryGetValue(kextInfo2, CFSTR(kOSBundleLoadTagKey));
OSKextLoadTag tag1Value = kOSKextInvalidLoadTag;
OSKextLoadTag tag2Value = kOSKextInvalidLoadTag;
getNumValue(loadTag1, kCFNumberSInt32Type, &tag1Value);
getNumValue(loadTag2, kCFNumberSInt32Type, &tag2Value);
if (tag1Value == tag2Value) {
/* Whether invalid or valid, same is same. */
result = 0;
} else if (tag1Value == kOSKextInvalidLoadTag) {
result = -1;
} else if (tag2Value == kOSKextInvalidLoadTag) {
result = 1;
} else if (tag1Value < tag2Value) {
result = -1;
} else if (tag2Value < tag1Value) {
result = 1;
}
return result;
}
/*******************************************************************************
*******************************************************************************/
CFComparisonResult compareNumbers(
const void * val1,
const void * val2,
void * context)
{
CFComparisonResult result = CFNumberCompare((CFNumberRef)val1,
(CFNumberRef)val2, context);
if (result == kCFCompareLessThan) {
result = kCFCompareGreaterThan;
} else if (result == kCFCompareGreaterThan) {
result = kCFCompareLessThan;
}
return result;
}
/*******************************************************************************
*******************************************************************************/
static void usage(UsageLevel usageLevel)
{
fprintf(stderr, "usage: %s [-a] [-k] [-l] [-b bundle_id] ...\n", progname);
if (usageLevel == kUsageLevelBrief) {
fprintf(stderr, "\nUse %s -%s (-%c) for a list of options.\n",
progname, kOptNameHelp, kOptHelp);
return;
}
fprintf(stderr, "-%s (-%c): show only loadable kexts (omit kernel components).\n",
kOptNameNoKernelComponents, kOptNoKernelComponents);
fprintf(stderr, "-%s (-%c): print the list only, omitting the header.\n",
kOptNameListOnly, kOptListOnly);
fprintf(stderr, "-%s (-%c) <bundle_id>: print info for kexts named by identifier.\n",
kOptNameBundleIdentifier, kOptBundleIdentifier);
fprintf(stderr, "-%s (-%c): Include architecture info in output.\n",
kOptNameArchitecture, kOptArchitecture);
return;
}