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--- xnu/xnu-2050.22.13/libsa/bootstrap.cpp
+++ xnu/xnu-3248.30.4/libsa/bootstrap.cpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2000 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2012 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
@@ -71,6 +71,10 @@
static void bootstrapLoadSecurityExtensions(void);
+#if NO_KEXTD
+extern "C" bool IORamDiskBSDRoot(void);
+#endif
+
#if PRAGMA_MARK
#pragma mark Macros
#endif
@@ -127,9 +131,6 @@
void readPrelinkedExtensions(
kernel_section_t * prelinkInfoSect);
void readBooterExtensions(void);
- OSReturn readMkextExtensions(
- OSString * deviceTreeName,
- OSData * deviceTreeData);
OSReturn loadKernelComponentKexts(void);
void loadKernelExternalComponents(void);
@@ -226,11 +227,6 @@
void * prelinkData = NULL; // see code
vm_size_t prelinkLength = 0;
-#if __i386__
- vm_map_offset_t prelinkDataMapOffset = 0;
- void * prelinkCopy = NULL; // see code
- kern_return_t mem_result = KERN_SUCCESS;
-#endif
OSDictionary * infoDict = NULL; // do not release
@@ -239,7 +235,9 @@
u_int i = 0;
#if NO_KEXTD
+ bool ramDiskBoot;
bool developerDevice;
+ bool dontLoad;
#endif
OSKextLog(/* kext */ NULL,
@@ -255,7 +253,7 @@
"Can't find prelinked kexts' text segment.");
goto finish;
}
-
+
#if KASLR_KEXT_DEBUG
unsigned long scratchSize;
vm_offset_t scratchAddr;
@@ -302,67 +300,6 @@
prelinkData = (void *) prelinkTextSegment->vmaddr;
prelinkLength = prelinkTextSegment->vmsize;
-#if __i386__
- /* To enable paging and write/execute protections on the kext
- * executables, we need to copy them out of the booter-created
- * memory, reallocate that space with VM, then prelinkCopy them back in.
- *
- * This isn't necessary on x86_64 because kexts have their own VM
- * region for that architecture.
- *
- * XXX: arm's pmap implementation doesn't seem to let us do this.
- */
-
- mem_result = kmem_alloc(kernel_map, (vm_offset_t *)&prelinkCopy,
- prelinkLength);
- if (mem_result != KERN_SUCCESS) {
- OSKextLog(/* kext */ NULL,
- kOSKextLogErrorLevel |
- kOSKextLogGeneralFlag | kOSKextLogArchiveFlag,
- "Can't copy prelinked kexts' text for VM reassign.");
- goto finish;
- }
-
- /* Copy it out.
- */
- memcpy(prelinkCopy, prelinkData, prelinkLength);
-
- /* Dump the booter memory.
- */
- ml_static_mfree((vm_offset_t)prelinkData, prelinkLength);
-
- /* Set up the VM region.
- */
- prelinkDataMapOffset = (vm_map_offset_t)(uintptr_t)prelinkData;
- mem_result = vm_map_enter_mem_object(
- kernel_map,
- &prelinkDataMapOffset,
- prelinkLength, /* mask */ 0,
- VM_FLAGS_FIXED | VM_FLAGS_OVERWRITE,
- (ipc_port_t)NULL,
- (vm_object_offset_t) 0,
- /* copy */ FALSE,
- /* cur_protection */ VM_PROT_ALL,
- /* max_protection */ VM_PROT_ALL,
- /* inheritance */ VM_INHERIT_DEFAULT);
- if ((mem_result != KERN_SUCCESS) ||
- (prelinkTextSegment->vmaddr != prelinkDataMapOffset))
- {
- OSKextLog(/* kext */ NULL,
- kOSKextLogErrorLevel |
- kOSKextLogGeneralFlag | kOSKextLogArchiveFlag,
- "Can't create kexts' text VM entry at 0x%llx, length 0x%x (error 0x%x).",
- (unsigned long long) prelinkDataMapOffset, prelinkLength, mem_result);
- goto finish;
- }
- prelinkData = (void *)(uintptr_t)prelinkDataMapOffset;
-
- /* And copy it back.
- */
- memcpy(prelinkData, prelinkCopy, prelinkLength);
-
- kmem_free(kernel_map, (vm_offset_t)prelinkCopy, prelinkLength);
-#endif /* __i386__ */
/* Unserialize the info dictionary from the prelink info section.
*/
@@ -385,19 +322,13 @@
}
#if NO_KEXTD
- /* Check if we should keep developer kexts around. Default:
- * Release: No
- * Development: Yes
- * Debug : Yes
+ /* Check if we should keep developer kexts around.
* TODO: Check DeviceTree instead of a boot-arg <rdar://problem/10604201>
*/
-#if DEVELOPMENT
developerDevice = true;
-#else
- developerDevice = false;
-#endif
-
PE_parse_boot_argn("developer", &developerDevice, sizeof(developerDevice));
+
+ ramDiskBoot = IORamDiskBSDRoot();
#endif /* NO_KEXTD */
infoDictArray = OSDynamicCast(OSArray,
@@ -407,9 +338,13 @@
"The prelinked kernel has no kext info dictionaries");
goto finish;
}
-
- /* Create OSKext objects for each info dictionary.
- */
+
+ /* Create dictionary of excluded kexts
+ */
+ OSKext::createExcludeListFromPrelinkInfo(infoDictArray);
+
+ /* Create OSKext objects for each info dictionary.
+ */
for (i = 0; i < infoDictArray->getCount(); ++i) {
infoDict = OSDynamicCast(OSDictionary, infoDictArray->getObject(i));
if (!infoDict) {
@@ -421,30 +356,46 @@
}
#if NO_KEXTD
+ dontLoad = false;
+
/* If we're not on a developer device, skip and free developer kexts.
*/
if (developerDevice == false) {
OSBoolean *devOnlyBool = OSDynamicCast(OSBoolean,
infoDict->getObject(kOSBundleDeveloperOnlyKey));
if (devOnlyBool == kOSBooleanTrue) {
- OSString *bundleID = OSDynamicCast(OSString,
- infoDict->getObject(kCFBundleIdentifierKey));
- if (bundleID) {
- OSKextLog(NULL, kOSKextLogWarningLevel | kOSKextLogGeneralFlag,
- "Kext %s not loading on non-dev device.", bundleID->getCStringNoCopy());
- }
-
- OSNumber *addressNum = OSDynamicCast(OSNumber,
- infoDict->getObject(kPrelinkExecutableLoadKey));
- OSNumber *lengthNum = OSDynamicCast(OSNumber,
- infoDict->getObject(kPrelinkExecutableSizeKey));
- if (addressNum && lengthNum) {
+ dontLoad = true;
+ }
+ }
+
+ /* Skip and free kexts that are only needed when booted from a ram disk.
+ */
+ if (ramDiskBoot == false) {
+ OSBoolean *ramDiskOnlyBool = OSDynamicCast(OSBoolean,
+ infoDict->getObject(kOSBundleRamDiskOnlyKey));
+ if (ramDiskOnlyBool == kOSBooleanTrue) {
+ dontLoad = true;
+ }
+ }
+
+ if (dontLoad == true) {
+ OSString *bundleID = OSDynamicCast(OSString,
+ infoDict->getObject(kCFBundleIdentifierKey));
+ if (bundleID) {
+ OSKextLog(NULL, kOSKextLogWarningLevel | kOSKextLogGeneralFlag,
+ "Kext %s not loading.", bundleID->getCStringNoCopy());
+ }
+
+ OSNumber *addressNum = OSDynamicCast(OSNumber,
+ infoDict->getObject(kPrelinkExecutableLoadKey));
+ OSNumber *lengthNum = OSDynamicCast(OSNumber,
+ infoDict->getObject(kPrelinkExecutableSizeKey));
+ if (addressNum && lengthNum) {
#error Pick the right way to free prelinked data on this arch
- }
-
- infoDictArray->removeObject(i--);
- continue;
}
+
+ infoDictArray->removeObject(i--);
+ continue;
}
#endif /* NO_KEXTD */
@@ -504,7 +455,6 @@
/*********************************************************************
*********************************************************************/
#define BOOTER_KEXT_PREFIX "Driver-"
-#define BOOTER_MKEXT_PREFIX "DriversPackage-"
typedef struct _DeviceTreeBuffer {
uint32_t paddr;
@@ -528,7 +478,7 @@
OSKextLog(/* kext */ NULL,
kOSKextLogProgressLevel |
kOSKextLogDirectoryScanFlag | kOSKextLogKextBookkeepingFlag,
- "Reading startup extensions/mkexts from booter memory.");
+ "Reading startup extensions from booter memory.");
booterMemoryMap = IORegistryEntry::fromPath( "/chosen/memory-map", gIODTPlane);
@@ -558,10 +508,14 @@
goto finish;
}
+ /* Create dictionary of excluded kexts
+ */
+ OSKext::createExcludeListFromBooterData(propertyDict, keyIterator);
+ keyIterator->reset();
+
while ( ( deviceTreeName =
OSDynamicCast(OSString, keyIterator->getNextObject() ))) {
- boolean_t isMkext = FALSE;
const char * devTreeNameCString = deviceTreeName->getCStringNoCopy();
OSData * deviceTreeEntry = OSDynamicCast(OSData,
propertyDict->getObject(deviceTreeName));
@@ -575,18 +529,10 @@
continue;
}
- /* Make sure it is either a kext or an mkext */
- if (!strncmp(devTreeNameCString, BOOTER_KEXT_PREFIX,
- CONST_STRLEN(BOOTER_KEXT_PREFIX))) {
-
- isMkext = FALSE;
-
- } else if (!strncmp(devTreeNameCString, BOOTER_MKEXT_PREFIX,
- CONST_STRLEN(BOOTER_MKEXT_PREFIX))) {
-
- isMkext = TRUE;
-
- } else {
+ /* Make sure it is a kext */
+ if (strncmp(devTreeNameCString,
+ BOOTER_KEXT_PREFIX,
+ CONST_STRLEN(BOOTER_KEXT_PREFIX))) {
continue;
}
@@ -609,7 +555,7 @@
OSKextLog(/* kext */ NULL,
kOSKextLogErrorLevel |
kOSKextLogDirectoryScanFlag,
- "Can't get virtual address for device tree mkext entry %s.",
+ "Can't get virtual address for device tree entry %s.",
devTreeNameCString);
goto finish;
}
@@ -631,16 +577,12 @@
}
booterData->setDeallocFunction(osdata_phys_free);
- if (isMkext) {
- readMkextExtensions(deviceTreeName, booterData);
- } else {
- /* Create the kext for the entry, then release it, because the
- * kext system keeps them around until explicitly removed.
- * Any creation/registration failures are already logged for us.
- */
- OSKext * newKext = OSKext::withBooterData(deviceTreeName, booterData);
- OSSafeRelease(newKext);
- }
+ /* Create the kext for the entry, then release it, because the
+ * kext system keeps them around until explicitly removed.
+ * Any creation/registration failures are already logged for us.
+ */
+ OSKext * newKext = OSKext::withBooterData(deviceTreeName, booterData);
+ OSSafeRelease(newKext);
booterMemoryMap->removeProperty(deviceTreeName);
@@ -654,49 +596,6 @@
OSSafeRelease(booterData);
OSSafeRelease(aKext);
return;
-}
-
-/*********************************************************************
-*********************************************************************/
-OSReturn
-KLDBootstrap::readMkextExtensions(
- OSString * deviceTreeName,
- OSData * booterData)
-{
- OSReturn result = kOSReturnError;
-
- uint32_t checksum;
- IORegistryEntry * registryRoot = NULL; // do not release
- OSData * checksumObj = NULL; // must release
-
- OSKextLog(/* kext */ NULL,
- kOSKextLogStepLevel |
- kOSKextLogDirectoryScanFlag | kOSKextLogArchiveFlag,
- "Reading startup mkext archive from device tree entry %s.",
- deviceTreeName->getCStringNoCopy());
-
- /* If we successfully read the archive,
- * then save the mkext's checksum in the IORegistry.
- * assumes we'll only ever have one mkext to boot
- */
- result = OSKext::readMkextArchive(booterData, &checksum);
- if (result == kOSReturnSuccess) {
-
- OSKextLog(/* kext */ NULL,
- kOSKextLogProgressLevel |
- kOSKextLogArchiveFlag,
- "Startup mkext archive has checksum 0x%x.", (int)checksum);
-
- registryRoot = IORegistryEntry::getRegistryRoot();
- assert(registryRoot);
- checksumObj = OSData::withBytes((void *)&checksum, sizeof(checksum));
- assert(checksumObj);
- if (checksumObj) {
- registryRoot->setProperty(kOSStartupMkextCRC, checksumObj);
- }
- }
-
- return result;
}
/*********************************************************************