*
* @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@
*/
#include <machine/machine_routines.h>
#include <mach/kmod.h>
#include <mach-o/mach_header.h>
+#include <kern/host.h>
};
#include <IOKit/IOLib.h>
kernelTables = OSCollectionIterator::withCollection( array );
lock = IOLockAlloc();
+ kld_lock = IOLockAlloc();
kernelTables->reset();
while( (dict = (OSDictionary *) kernelTables->getNextObject())) {
IOTakeLock( lock );
kernelTables->reset();
while ( (dict = (OSDictionary *) kernelTables->getNextObject()) ) {
+
+ /* This comparison must be done with only the keys in the
+ * "matching" dict to enable general searches.
+ */
if ( dict->isEqualTo(matching, matching) )
set->setObject(dict);
}
// Be sure not to double up on personalities.
driver = (OSDictionary *)array->getObject(count);
- if ( dict->isEqualTo(driver, driver) ) {
+
+ /* 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;
}
}
IOUnlock( lock );
- if ( doNubMatching ) {
- (IOService::getServiceRoot())->waitQuiet();
- kmod_send_generic( kIOCatalogMatchIdle, 0, 0 );
- }
-
set->release();
iter->release();
array->flushCollection();
tables->reset();
while ( (dict = (OSDictionary *)tables->getNextObject()) ) {
+
+ /* This comparison must be done with only the keys in the
+ * "matching" dict to enable general searches.
+ */
if ( dict->isEqualTo(matching, matching) ) {
AddNewImports( set, dict );
continue;
return false;
// Is the module already loaded?
- k_info = kmod_lookupbyname((char *)moduleName);
+ 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 (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);
+ 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;
}
IOReturn IOCatalogue::unloadModule( OSString * moduleName ) const
{
- kmod_info_t * k_info;
+ kmod_info_t * k_info = 0;
kern_return_t ret;
const char * name;
ret = kIOReturnBadArgument;
if ( moduleName ) {
name = moduleName->getCStringNoCopy();
- k_info = kmod_lookupbyname((char *)name);
+ k_info = kmod_lookupbyname_locked((char *)name);
if ( k_info && (k_info->reference_count < 1) ) {
if ( k_info->stop &&
- !((ret = k_info->stop(k_info, 0)) == kIOReturnSuccess) )
+ !((ret = k_info->stop(k_info, 0)) == kIOReturnSuccess) ) {
+
+ kfree(k_info, sizeof(kmod_info_t));
return ret;
+ }
ret = kmod_destroy(host_priv_self(), k_info->id);
}
}
+
+ if (k_info) {
+ kfree(k_info, sizeof(kmod_info_t));
+ }
return ret;
}
static IOReturn _terminateDrivers( OSArray * array, OSDictionary * matching )
{
OSCollectionIterator * tables;
- OSCollectionIterator * props;
OSDictionary * dict;
OSIterator * iter;
OSArray * arrayCopy;
UniqueProperties( matching );
- props = OSCollectionIterator::withCollection(matching);
- if ( !props ) {
- iter->release();
- return kIOReturnNoMemory;
- }
-
// terminate instances.
do {
iter->reset();
if ( !dict )
continue;
+ /* Terminate only for personalities that match the matching dictionary.
+ * This comparison must be done with only the keys in the
+ * "matching" dict to enable general matching.
+ */
if ( !dict->isEqualTo(matching, matching) )
continue;
array->flushCollection();
tables->reset();
while ( (dict = (OSDictionary *)tables->getNextObject()) ) {
+
+ /* Remove from the catalogue's array any personalities
+ * that match the matching dictionary.
+ * This comparison must be done with only the keys in the
+ * "matching" dict to enable general matching.
+ */
if ( dict->isEqualTo(matching, matching) )
continue;
return kIOReturnNoMemory;
dict->setObject(kModuleKey, moduleName);
-
+
IOTakeLock( lock );
ret = _terminateDrivers(array, dict);
ret = terminateDriversForModule(name, unload);
name->release();
-
+
return ret;
}
kernelTables->reset();
while ( (dict = (OSDictionary *)kernelTables->getNextObject()) ) {
+
+ /* This comparison must be done with only the keys in the
+ * "matching" dict to enable general matching.
+ */
if ( dict->isEqualTo(matching, matching) )
AddNewImports(set, dict);
}
bool IOCatalogue::recordStartupExtensions(void) {
bool result = false;
- if (record_startup_extensions_function) {
+ IOLockLock(kld_lock);
+ if (kernelLinkerPresent && record_startup_extensions_function) {
result = (*record_startup_extensions_function)();
} else {
IOLog("Can't record startup extensions; "
"kernel linker is not present.\n");
result = false;
}
+ IOLockUnlock(kld_lock);
return result;
}
bool IOCatalogue::addExtensionsFromArchive(OSData * mkext) {
bool result = false;
- if (add_from_mkext_function) {
+ 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;
}
+ IOLockUnlock(kld_lock);
return result;
}
/* This must be the very first thing done by this function.
*/
- IOTakeLock(lock);
+ IOLockLock(kld_lock);
/* If the kernel linker isn't here, that's automatically
segment = getsegbynamefromheader(
&_mh_execute_header, "__KLD");
if (!segment) {
+ IOLog("error removing kernel linker: can't find __KLD segment\n");
result = KERN_FAILURE;
goto finish;
}
segment = getsegbynamefromheader(
&_mh_execute_header, "__LINKEDIT");
if (!segment) {
+ IOLog("error removing kernel linker: can't find __LINKEDIT segment\n");
result = KERN_FAILURE;
goto finish;
}
/* This must be the very last thing done before returning.
*/
- IOUnlock(lock);
+ IOLockUnlock(kld_lock);
return result;
}
projects / apple / xnu.git / blobdiff