*
* @APPLE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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 OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * 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@
*/
*/
int kernelLinkerPresent = 0;
-
-#define super OSObject
#define kModuleKey "CFBundleIdentifier"
+#define super OSObject
OSDefineMetaClassAndStructors(IOCatalogue, OSObject)
#define CATALOGTEST 0
-IOCatalogue * gIOCatalogue;
-const OSSymbol * gIOClassKey;
-const OSSymbol * gIOProbeScoreKey;
+IOCatalogue * gIOCatalogue;
+const OSSymbol * gIOClassKey;
+const OSSymbol * gIOProbeScoreKey;
+const OSSymbol * gIOModuleIdentifierKey;
+OSSet * gIOCatalogModuleRequests;
+OSSet * gIOCatalogCacheMisses;
+OSSet * gIOCatalogROMMkexts;
+IOLock * gIOCatalogLock;
+IOLock * gIOKLDLock;
+
+/*********************************************************************
+*********************************************************************/
+
+OSArray * gIOPrelinkedModules = 0;
+
+extern "C" kern_return_t
+kmod_create_internal(
+ kmod_info_t *info,
+ kmod_t *id);
+
+extern "C" kern_return_t
+kmod_destroy_internal(kmod_t id);
+
+extern "C" kern_return_t
+kmod_start_or_stop(
+ kmod_t id,
+ int start,
+ kmod_args_t *data,
+ mach_msg_type_number_t *dataCount);
+
+extern "C" kern_return_t kmod_retain(kmod_t id);
+extern "C" kern_return_t kmod_release(kmod_t id);
+
+static
+kern_return_t start_prelink_module(UInt32 moduleIndex)
+{
+ kern_return_t kr = KERN_SUCCESS;
+ UInt32 * togo;
+ SInt32 count, where, end;
+ UInt32 * prelink;
+ SInt32 next, lastDep;
+ OSData * data;
+ OSString * str;
+ OSDictionary * dict;
+
+ OSArray *
+ prelinkedModules = gIOPrelinkedModules;
+
+ togo = IONew(UInt32, prelinkedModules->getCount());
+ togo[0] = moduleIndex;
+ count = 1;
+
+ for (next = 0; next < count; next++)
+ {
+ dict = (OSDictionary *) prelinkedModules->getObject(togo[next]);
+
+ data = OSDynamicCast(OSData, dict->getObject("OSBundlePrelink"));
+ if (!data)
+ {
+ // already started or no code
+ if (togo[next] == moduleIndex)
+ {
+ kr = KERN_FAILURE;
+ break;
+ }
+ continue;
+ }
+ prelink = (UInt32 *) data->getBytesNoCopy();
+ lastDep = OSReadBigInt32(prelink, 12);
+ for (SInt32 idx = OSReadBigInt32(prelink, 8); idx < lastDep; idx += sizeof(UInt32))
+ {
+ UInt32 depIdx = OSReadBigInt32(prelink, idx) - 1;
+
+ for (where = next + 1;
+ (where < count) && (togo[where] > depIdx);
+ where++) {}
+
+ if (where != count)
+ {
+ if (togo[where] == depIdx)
+ continue;
+ for (end = count; end != where; end--)
+ togo[end] = togo[end - 1];
+ }
+ count++;
+ togo[where] = depIdx;
+ }
+ }
+
+ if (KERN_SUCCESS != kr)
+ return kr;
+
+ for (next = (count - 1); next >= 0; next--)
+ {
+ dict = (OSDictionary *) prelinkedModules->getObject(togo[next]);
+
+ data = OSDynamicCast(OSData, dict->getObject("OSBundlePrelink"));
+ if (!data)
+ continue;
+ prelink = (UInt32 *) data->getBytesNoCopy();
+
+ kmod_t id;
+ kmod_info_t * kmod_info = (kmod_info_t *) OSReadBigInt32(prelink, 0);
+
+ kr = kmod_create_internal(kmod_info, &id);
+ if (KERN_SUCCESS != kr)
+ break;
+
+ lastDep = OSReadBigInt32(prelink, 12);
+ for (SInt32 idx = OSReadBigInt32(prelink, 8); idx < lastDep; idx += sizeof(UInt32))
+ {
+ OSDictionary * depDict;
+ kmod_info_t * depInfo;
+
+ depDict = (OSDictionary *) prelinkedModules->getObject(OSReadBigInt32(prelink, idx) - 1);
+ str = OSDynamicCast(OSString, depDict->getObject(kModuleKey));
+ depInfo = kmod_lookupbyname_locked(str->getCStringNoCopy());
+ if (depInfo)
+ {
+ kr = kmod_retain(KMOD_PACK_IDS(id, depInfo->id));
+ kfree((vm_offset_t) depInfo, sizeof(kmod_info_t));
+ } else
+ IOLog("%s: NO DEP %s\n", kmod_info->name, str->getCStringNoCopy());
+ }
+ dict->removeObject("OSBundlePrelink");
+
+ if (kmod_info->start)
+ kr = kmod_start_or_stop(kmod_info->id, 1, 0, 0);
+ }
+
+ IODelete(togo, UInt32, prelinkedModules->getCount());
+
+ return kr;
+}
+
+/*********************************************************************
+* This is a function that IOCatalogue calls in order to load a kmod.
+*********************************************************************/
+
+static
+kern_return_t kmod_load_from_cache_sym(const OSSymbol * kmod_name)
+{
+ OSArray * prelinkedModules = gIOPrelinkedModules;
+ kern_return_t result = KERN_FAILURE;
+ OSDictionary * dict;
+ OSObject * ident;
+ UInt32 idx;
+
+ if (!gIOPrelinkedModules)
+ return KERN_FAILURE;
+
+ for (idx = 0;
+ (dict = (OSDictionary *) prelinkedModules->getObject(idx));
+ idx++)
+ {
+ if ((ident = dict->getObject(kModuleKey))
+ && kmod_name->isEqualTo(ident))
+ break;
+ }
+ if (dict)
+ {
+ if (kernelLinkerPresent && dict->getObject("OSBundleDefer"))
+ {
+ kmod_load_extension((char *) kmod_name->getCStringNoCopy());
+ result = kIOReturnOffline;
+ }
+ else
+ result = start_prelink_module(idx);
+ }
+
+ return result;
+}
+
+extern "C" Boolean kmod_load_request(const char * moduleName, Boolean make_request)
+{
+ bool ret, cacheMiss = false;
+ kern_return_t kr;
+ const OSSymbol * sym = 0;
+ kmod_info_t * kmod_info;
+
+ if (!moduleName)
+ return false;
+
+ /* To make sure this operation completes even if a bad extension needs
+ * to be removed, take the kld lock for this whole block, spanning the
+ * kmod_load_function() and remove_startup_extension_function() calls.
+ */
+ IOLockLock(gIOKLDLock);
+ do
+ {
+ // Is the module already loaded?
+ ret = (0 != (kmod_info = kmod_lookupbyname_locked((char *)moduleName)));
+ if (ret) {
+ kfree((vm_offset_t) kmod_info, sizeof(kmod_info_t));
+ break;
+ }
+ sym = OSSymbol::withCString(moduleName);
+ if (!sym) {
+ ret = false;
+ break;
+ }
+
+ kr = kmod_load_from_cache_sym(sym);
+ ret = (kIOReturnSuccess == kr);
+ cacheMiss = !ret;
+ if (ret || !make_request || (kr == kIOReturnOffline))
+ break;
+
+ // If the module hasn't been loaded, then load it.
+ if (!kmod_load_function) {
+ IOLog("IOCatalogue: %s cannot be loaded "
+ "(kmod load function not set).\n",
+ moduleName);
+ break;
+ }
+
+ kr = kmod_load_function((char *)moduleName);
+
+ if (ret != kIOReturnSuccess) {
+ IOLog("IOCatalogue: %s cannot be loaded.\n", moduleName);
+
+ /* If the extension couldn't be loaded this time,
+ * make it unavailable so that no more requests are
+ * made in vain. This also enables other matching
+ * extensions to have a chance.
+ */
+ if (kernelLinkerPresent && remove_startup_extension_function) {
+ (*remove_startup_extension_function)(moduleName);
+ }
+ ret = false;
+
+ } else if (kernelLinkerPresent) {
+ // If kern linker is here, the driver is actually loaded,
+ // so return true.
+ ret = true;
+
+ } else {
+ // kern linker isn't here, a request has been queued
+ // but the module isn't necessarily loaded yet, so stall.
+ ret = false;
+ }
+ }
+ while (false);
+
+ IOLockUnlock(gIOKLDLock);
+
+ if (sym)
+ {
+ IOLockLock(gIOCatalogLock);
+ gIOCatalogModuleRequests->setObject(sym);
+ if (cacheMiss)
+ gIOCatalogCacheMisses->setObject(sym);
+ IOLockUnlock(gIOCatalogLock);
+ }
+
+ return ret;
+}
+
+extern "C" kern_return_t kmod_unload_cache(void)
+{
+ OSArray * prelinkedModules = gIOPrelinkedModules;
+ kern_return_t result = KERN_FAILURE;
+ OSDictionary * dict;
+ UInt32 idx;
+ UInt32 * prelink;
+ OSData * data;
+
+ if (!gIOPrelinkedModules)
+ return KERN_SUCCESS;
+
+ IOLockLock(gIOKLDLock);
+ for (idx = 0;
+ (dict = (OSDictionary *) prelinkedModules->getObject(idx));
+ idx++)
+ {
+ data = OSDynamicCast(OSData, dict->getObject("OSBundlePrelink"));
+ if (!data)
+ continue;
+ prelink = (UInt32 *) data->getBytesNoCopy();
+
+ kmod_info_t * kmod_info = (kmod_info_t *) OSReadBigInt32(prelink, 0);
+ vm_offset_t
+ virt = ml_static_ptovirt(kmod_info->address);
+ if( virt) {
+ ml_static_mfree(virt, kmod_info->size);
+ }
+ }
+
+ gIOPrelinkedModules->release();
+ gIOPrelinkedModules = 0;
+
+ IOLockUnlock(gIOKLDLock);
+
+ return result;
+}
+
+extern "C" kern_return_t kmod_load_from_cache(const char * kmod_name)
+{
+ kern_return_t kr;
+ const OSSymbol * sym = OSSymbol::withCStringNoCopy(kmod_name);
+
+ if (sym)
+ {
+ kr = kmod_load_from_cache_sym(sym);
+ sym->release();
+ }
+ else
+ kr = kIOReturnNoMemory;
+
+ return kr;
+}
+
+/*********************************************************************
+*********************************************************************/
static void UniqueProperties( OSDictionary * dict )
{
errorString->release();
}
- gIOClassKey = OSSymbol::withCStringNoCopy( kIOClassKey );
- gIOProbeScoreKey = OSSymbol::withCStringNoCopy( kIOProbeScoreKey );
- assert( array && gIOClassKey && gIOProbeScoreKey);
+ gIOClassKey = OSSymbol::withCStringNoCopy( kIOClassKey );
+ gIOProbeScoreKey = OSSymbol::withCStringNoCopy( kIOProbeScoreKey );
+ gIOModuleIdentifierKey = OSSymbol::withCStringNoCopy( kModuleKey );
+ gIOCatalogModuleRequests = OSSet::withCapacity(16);
+ gIOCatalogCacheMisses = OSSet::withCapacity(16);
+ gIOCatalogROMMkexts = OSSet::withCapacity(4);
+
+ assert( array && gIOClassKey && gIOProbeScoreKey
+ && gIOModuleIdentifierKey && gIOCatalogModuleRequests);
gIOCatalogue = new IOCatalogue;
assert(gIOCatalogue);
array->retain();
kernelTables = OSCollectionIterator::withCollection( array );
- lock = IOLockAlloc();
- kld_lock = IOLockAlloc();
+ gIOCatalogLock = IOLockAlloc();
+ gIOKLDLock = IOLockAlloc();
+
+ lock = gIOCatalogLock;
+ kld_lock = gIOKLDLock;
kernelTables->reset();
while( (dict = (OSDictionary *) kernelTables->getNextObject())) {
set = OSOrderedSet::withCapacity( 1 );
- IOTakeLock( &self->lock );
+ IOLockLock( &self->lock );
for( newLimit = 0; newLimit < kDriversPerIter; newLimit++) {
table = (OSDictionary *) self->array->getObject(
hackLimit += newLimit;
self->generation++;
- IOUnlock( &self->lock );
+ IOLockUnlock( &self->lock );
if( kDriversPerIter == newLimit) {
AbsoluteTime deadline;
if( !set )
return( 0 );
- IOTakeLock( lock );
+ IOLockLock( lock );
kernelTables->reset();
#if CATALOGTEST
*generationCount = getGenerationCount();
- IOUnlock( lock );
+ IOLockUnlock( lock );
return( set );
}
set = OSOrderedSet::withCapacity( 1, IOServiceOrdering,
(void *)gIOProbeScoreKey );
- IOTakeLock( lock );
+ IOLockLock( lock );
kernelTables->reset();
while ( (dict = (OSDictionary *) kernelTables->getNextObject()) ) {
set->setObject(dict);
}
*generationCount = getGenerationCount();
- IOUnlock( lock );
+ IOLockUnlock( lock );
return set;
}
// Add driver config tables to catalog and start matching process.
bool IOCatalogue::addDrivers(OSArray * drivers,
- bool doNubMatching = true )
+ bool doNubMatching )
{
OSCollectionIterator * iter;
OSDictionary * dict;
OSOrderedSet * set;
OSArray * persons;
+ OSString * moduleName;
bool ret;
ret = true;
return false;
}
- IOTakeLock( lock );
- while ( (dict = (OSDictionary *) iter->getNextObject()) ) {
- UInt count;
-
- UniqueProperties( dict );
-
- // Add driver personality to catalogue.
- count = array->getCount();
- while ( count-- ) {
- OSDictionary * driver;
-
- // Be sure not to double up on personalities.
- driver = (OSDictionary *)array->getObject(count);
-
- /* Unlike in other functions, this comparison must be exact!
- * The catalogue must be able to contain personalities that
- * are proper supersets of others.
- * Do not compare just the properties present in one driver
- * pesonality or the other.
- */
- if ( dict->isEqualTo(driver) ) {
- array->removeObject(count);
- break;
- }
- }
-
- ret = array->setObject( dict );
- if ( !ret )
- break;
-
- AddNewImports( set, dict );
+ IOLockLock( lock );
+ while ( (dict = (OSDictionary *) iter->getNextObject()) )
+ {
+ if ((moduleName = OSDynamicCast(OSString, dict->getObject("OSBundleModuleDemand"))))
+ {
+ IOLockUnlock( lock );
+ ret = kmod_load_request(moduleName->getCStringNoCopy(), false);
+ IOLockLock( lock );
+ ret = true;
+ }
+ else
+ {
+ SInt count;
+
+ UniqueProperties( dict );
+
+ // Add driver personality to catalogue.
+ count = array->getCount();
+ while ( count-- ) {
+ OSDictionary * driver;
+
+ // Be sure not to double up on personalities.
+ driver = (OSDictionary *)array->getObject(count);
+
+ /* Unlike in other functions, this comparison must be exact!
+ * The catalogue must be able to contain personalities that
+ * are proper supersets of others.
+ * Do not compare just the properties present in one driver
+ * pesonality or the other.
+ */
+ if (dict->isEqualTo(driver))
+ break;
+ }
+ if (count >= 0)
+ // its a dup
+ continue;
+
+ ret = array->setObject( dict );
+ if (!ret)
+ break;
+
+ AddNewImports( set, dict );
+ }
}
// Start device matching.
- if ( doNubMatching && (set->getCount() > 0) ) {
+ if (doNubMatching && (set->getCount() > 0)) {
IOService::catalogNewDrivers( set );
generation++;
}
- IOUnlock( lock );
+ IOLockUnlock( lock );
set->release();
iter->release();
// Remove drivers from the catalog which match the
// properties in the matching dictionary.
bool IOCatalogue::removeDrivers( OSDictionary * matching,
- bool doNubMatching = true)
+ bool doNubMatching)
{
OSCollectionIterator * tables;
OSDictionary * dict;
UniqueProperties( matching );
- IOTakeLock( lock );
+ IOLockLock( lock );
kernelTables->reset();
arrayCopy->merge(array);
array->flushCollection();
IOService::catalogNewDrivers(set);
generation++;
}
- IOUnlock( lock );
+ IOLockUnlock( lock );
set->release();
tables->release();
bool IOCatalogue::isModuleLoaded( const char * moduleName ) const
{
- kmod_info_t * k_info;
-
- if ( !moduleName )
- return false;
-
- // Is the module already loaded?
- k_info = kmod_lookupbyname_locked((char *)moduleName);
- if ( !k_info ) {
- kern_return_t ret;
-
- /* To make sure this operation completes even if a bad extension needs
- * to be removed, take the kld lock for this whole block, spanning the
- * kmod_load_function() and remove_startup_extension_function() calls.
- */
- IOLockLock(kld_lock);
-
- // If the module hasn't been loaded, then load it.
- if (kmod_load_function != 0) {
-
- ret = kmod_load_function((char *)moduleName);
-
- if ( ret != kIOReturnSuccess ) {
- IOLog("IOCatalogue: %s cannot be loaded.\n", moduleName);
-
- /* If the extension couldn't be loaded this time,
- * make it unavailable so that no more requests are
- * made in vain. This also enables other matching
- * extensions to have a chance.
- */
- if (kernelLinkerPresent && remove_startup_extension_function) {
- (*remove_startup_extension_function)(moduleName);
- }
- IOLockUnlock(kld_lock);
- return false;
- } else if (kernelLinkerPresent) {
- // If kern linker is here, the driver is actually loaded,
- // so return true.
- IOLockUnlock(kld_lock);
- return true;
- } else {
- // kern linker isn't here, a request has been queued
- // but the module isn't necessarily loaded yet, so stall.
- IOLockUnlock(kld_lock);
- return false;
- }
- } else {
- IOLog("IOCatalogue: %s cannot be loaded "
- "(kmod load function not set).\n",
- moduleName);
- }
-
- IOLockUnlock(kld_lock);
- return false;
- }
-
- if (k_info) {
- kfree(k_info, sizeof(kmod_info_t));
- }
-
- /* Lock wasn't taken if we get here. */
- return true;
+ return (kmod_load_request(moduleName, true));
}
// Check to see if module has been loaded already.
if ( !driver )
return false;
- moduleName = OSDynamicCast(OSString, driver->getObject(kModuleKey));
+ moduleName = OSDynamicCast(OSString, driver->getObject(gIOModuleIdentifierKey));
if ( moduleName )
return isModuleLoaded(moduleName);
OSDictionary * dict;
dict = OSDictionary::withCapacity(2);
- dict->setObject(kModuleKey, moduleName);
+ dict->setObject(gIOModuleIdentifierKey, moduleName);
startMatching(dict);
dict->release();
}
if ( k_info->stop &&
!((ret = k_info->stop(k_info, 0)) == kIOReturnSuccess) ) {
- kfree(k_info, sizeof(kmod_info_t));
+ kfree((vm_offset_t) k_info, sizeof(kmod_info_t));
return ret;
}
}
if (k_info) {
- kfree(k_info, sizeof(kmod_info_t));
+ kfree((vm_offset_t) k_info, sizeof(kmod_info_t));
}
return ret;
IOReturn ret;
ret = kIOReturnSuccess;
- IOTakeLock( lock );
+ IOLockLock( lock );
ret = _terminateDrivers(array, matching);
kernelTables->reset();
- IOUnlock( lock );
+ IOLockUnlock( lock );
return ret;
}
if ( !dict )
return kIOReturnNoMemory;
- dict->setObject(kModuleKey, moduleName);
+ dict->setObject(gIOModuleIdentifierKey, moduleName);
- IOTakeLock( lock );
+ IOLockLock( lock );
ret = _terminateDrivers(array, dict);
kernelTables->reset();
ret = unloadModule(moduleName);
}
- IOUnlock( lock );
+ IOLockUnlock( lock );
dict->release();
if ( !set )
return false;
- IOTakeLock( lock );
+ IOLockLock( lock );
kernelTables->reset();
while ( (dict = (OSDictionary *)kernelTables->getNextObject()) ) {
generation++;
}
- IOUnlock( lock );
+ IOLockUnlock( lock );
set->release();
void IOCatalogue::reset(void)
{
- OSArray * tables;
- OSDictionary * entry;
- unsigned int count;
-
IOLog("Resetting IOCatalogue.\n");
-
- IOTakeLock( lock );
- tables = OSArray::withArray(array);
- array->flushCollection();
-
- count = tables->getCount();
- while ( count-- ) {
- entry = (OSDictionary *)tables->getObject(count);
- if ( entry && !entry->getObject(kModuleKey) ) {
- array->setObject(entry);
- }
- }
-
- kernelTables->reset();
- IOUnlock( lock );
-
- tables->release();
}
bool IOCatalogue::serialize(OSSerialize * s) const
{
- bool ret;
+ bool ret;
if ( !s )
return false;
- IOTakeLock( lock );
+ IOLockLock( lock );
+
ret = array->serialize(s);
- IOUnlock( lock );
+
+ IOLockUnlock( lock );
return ret;
}
+bool IOCatalogue::serializeData(IOOptionBits kind, OSSerialize * s) const
+{
+ kern_return_t kr = kIOReturnSuccess;
+
+ switch ( kind )
+ {
+ case kIOCatalogGetContents:
+ if (!serialize(s))
+ kr = kIOReturnNoMemory;
+ break;
+
+ case kIOCatalogGetModuleDemandList:
+ IOLockLock( lock );
+ if (!gIOCatalogModuleRequests->serialize(s))
+ kr = kIOReturnNoMemory;
+ IOLockUnlock( lock );
+ break;
+
+ case kIOCatalogGetCacheMissList:
+ IOLockLock( lock );
+ if (!gIOCatalogCacheMisses->serialize(s))
+ kr = kIOReturnNoMemory;
+ IOLockUnlock( lock );
+ break;
+
+ case kIOCatalogGetROMMkextList:
+ IOLockLock( lock );
+
+ if (!gIOCatalogROMMkexts || !gIOCatalogROMMkexts->getCount())
+ kr = kIOReturnNoResources;
+ else if (!gIOCatalogROMMkexts->serialize(s))
+ kr = kIOReturnNoMemory;
+
+ if (gIOCatalogROMMkexts)
+ {
+ gIOCatalogROMMkexts->release();
+ gIOCatalogROMMkexts = 0;
+ }
+
+ IOLockUnlock( lock );
+ break;
+
+ default:
+ kr = kIOReturnBadArgument;
+ break;
+ }
+
+ return kr;
+}
+
bool IOCatalogue::recordStartupExtensions(void) {
bool result = false;
/*********************************************************************
*********************************************************************/
-bool IOCatalogue::addExtensionsFromArchive(OSData * mkext) {
+bool IOCatalogue::addExtensionsFromArchive(OSData * mkext)
+{
+ OSData * copyData;
bool result = false;
+ bool prelinked;
- IOLockLock(kld_lock);
- if (kernelLinkerPresent && add_from_mkext_function) {
- result = (*add_from_mkext_function)(mkext);
- } else {
- IOLog("Can't add startup extensions from archive; "
- "kernel linker is not present.\n");
- result = false;
+ /* The mkext we've been handed (or the data it references) can go away,
+ * so we need to make a local copy to keep around as long as it might
+ * be needed.
+ */
+ copyData = OSData::withData(mkext);
+ if (copyData)
+ {
+ struct section * infosect;
+
+ infosect = getsectbyname("__PRELINK", "__info");
+ prelinked = (infosect && infosect->addr && infosect->size);
+
+ IOLockLock(kld_lock);
+
+ if (gIOCatalogROMMkexts)
+ gIOCatalogROMMkexts->setObject(copyData);
+
+ if (prelinked) {
+ result = true;
+ } else if (kernelLinkerPresent && add_from_mkext_function) {
+ result = (*add_from_mkext_function)(copyData);
+ } else {
+ IOLog("Can't add startup extensions from archive; "
+ "kernel linker is not present.\n");
+ result = false;
+ }
+
+ IOLockUnlock(kld_lock);
+
+ copyData->release();
}
- IOLockUnlock(kld_lock);
return result;
}
*********************************************************************/
kern_return_t IOCatalogue::removeKernelLinker(void) {
kern_return_t result = KERN_SUCCESS;
- extern struct mach_header _mh_execute_header;
struct segment_command * segment;
char * dt_segment_name;
void * segment_paddress;
* memory so that any cross-dependencies (not that there
* should be any) are handled.
*/
- segment = getsegbynamefromheader(
- &_mh_execute_header, "__KLD");
+ segment = getsegbyname("__KLD");
if (!segment) {
- IOLog("error removing kernel linker: can't find __KLD segment\n");
+ IOLog("error removing kernel linker: can't find %s segment\n",
+ "__KLD");
result = KERN_FAILURE;
goto finish;
}
OSRuntimeUnloadCPPForSegment(segment);
- segment = getsegbynamefromheader(
- &_mh_execute_header, "__LINKEDIT");
+ segment = getsegbyname("__LINKEDIT");
if (!segment) {
- IOLog("error removing kernel linker: can't find __LINKEDIT segment\n");
+ IOLog("error removing kernel linker: can't find %s segment\n",
+ "__LINKEDIT");
result = KERN_FAILURE;
goto finish;
}
(int)segment_size);
}
+ struct section * sect;
+ sect = getsectbyname("__PRELINK", "__symtab");
+ if (sect && sect->addr)
+ {
+ vm_offset_t
+ virt = ml_static_ptovirt(sect->addr);
+ if( virt) {
+ ml_static_mfree(virt, sect->size);
+ }
+ }
finish:
projects / apple / xnu.git / blobdiff