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--- xnu/xnu-3248.50.21/iokit/Kernel/IONVRAM.cpp
+++ xnu/xnu-792.6.76/iokit/Kernel/IONVRAM.cpp
@@ -1,30 +1,23 @@
/*
- * Copyright (c) 1998-2006 Apple Computer, Inc. All rights reserved.
- * Copyright (c) 2007-2012 Apple Inc. All rights reserved.
+ * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ * @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. The rights granted to you under the License
- * may not be used to create, or enable the creation or redistribution of,
- * unlawful or unlicensed copies of an Apple operating system, or to
- * circumvent, violate, or enable the circumvention or violation of, any
- * terms of an Apple operating system software license agreement.
+ * 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.
*
- * 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
+ * This 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.
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
*
- * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ * @APPLE_LICENSE_HEADER_END@
*/
#include <IOKit/IOLib.h>
@@ -32,21 +25,12 @@
#include <IOKit/IOPlatformExpert.h>
#include <IOKit/IOUserClient.h>
#include <IOKit/IOKitKeys.h>
-#include <IOKit/IOKitKeysPrivate.h>
-#include <kern/debug.h>
-#include <pexpert/pexpert.h>
-
-#if CONFIG_MACF
-extern "C" {
-#include <security/mac.h>
-#include <security/mac_framework.h>
-};
-#endif /* MAC */
#define super IOService
#define kIONVRAMPrivilege kIOClientPrivilegeAdministrator
//#define kIONVRAMPrivilege kIOClientPrivilegeLocalUser
+
OSDefineMetaClassAndStructors(IODTNVRAM, IOService);
@@ -72,57 +56,10 @@
_registryPropertiesKey = OSSymbol::withCStringNoCopy("aapl,pci");
if (_registryPropertiesKey == 0) return false;
- // <rdar://problem/9529235> race condition possible between
- // IODTNVRAM and IONVRAMController (restore loses boot-args)
- initProxyData();
-
return true;
}
-void IODTNVRAM::initProxyData(void)
-{
- IORegistryEntry *entry;
- const char *key = "nvram-proxy-data";
- OSObject *prop;
- OSData *data;
- const void *bytes;
-
- entry = IORegistryEntry::fromPath("/chosen", gIODTPlane);
- if (entry != 0) {
- prop = entry->getProperty(key);
- if (prop != 0) {
- data = OSDynamicCast(OSData, prop);
- if (data != 0) {
- bytes = data->getBytesNoCopy();
- if (bytes != 0) {
- bcopy(bytes, _nvramImage, data->getLength());
- initNVRAMImage();
- _isProxied = true;
- }
- }
- }
- entry->removeProperty(key);
- entry->release();
- }
-}
-
void IODTNVRAM::registerNVRAMController(IONVRAMController *nvram)
-{
- if (_nvramController != 0) return;
-
- _nvramController = nvram;
-
- // <rdar://problem/9529235> race condition possible between
- // IODTNVRAM and IONVRAMController (restore loses boot-args)
- if (!_isProxied) {
- _nvramController->read(0, _nvramImage, kIODTNVRAMImageSize);
- initNVRAMImage();
- } else {
- syncOFVariables();
- }
-}
-
-void IODTNVRAM::initNVRAMImage(void)
{
char partitionID[18];
UInt32 partitionOffset, partitionLength;
@@ -130,56 +67,81 @@
UInt32 currentLength, currentOffset = 0;
OSNumber *partitionOffsetNumber, *partitionLengthNumber;
+ if (_nvramController != 0) return;
+
+ _nvramController = nvram;
+
+ _nvramController->read(0, _nvramImage, kIODTNVRAMImageSize);
+
// Find the offsets for the OF, XPRAM, NameRegistry and PanicInfo partitions.
_ofPartitionOffset = 0xFFFFFFFF;
+ _xpramPartitionOffset = 0xFFFFFFFF;
+ _nrPartitionOffset = 0xFFFFFFFF;
_piPartitionOffset = 0xFFFFFFFF;
freePartitionOffset = 0xFFFFFFFF;
freePartitionSize = 0;
-
- // Look through the partitions to find the OF, MacOS partitions.
- while (currentOffset < kIODTNVRAMImageSize) {
- currentLength = ((UInt16 *)(_nvramImage + currentOffset))[1] * 16;
-
- partitionOffset = currentOffset + 16;
- partitionLength = currentLength - 16;
-
- if (strncmp((const char *)_nvramImage + currentOffset + 4,
- kIODTNVRAMOFPartitionName, 12) == 0) {
- _ofPartitionOffset = partitionOffset;
- _ofPartitionSize = partitionLength;
- } else if (strncmp((const char *)_nvramImage + currentOffset + 4,
- kIODTNVRAMXPRAMPartitionName, 12) == 0) {
- } else if (strncmp((const char *)_nvramImage + currentOffset + 4,
- kIODTNVRAMPanicInfoPartitonName, 12) == 0) {
- _piPartitionOffset = partitionOffset;
- _piPartitionSize = partitionLength;
- } else if (strncmp((const char *)_nvramImage + currentOffset + 4,
- kIODTNVRAMFreePartitionName, 12) == 0) {
- freePartitionOffset = currentOffset;
- freePartitionSize = currentLength;
- } else {
- // Construct the partition ID from the signature and name.
- snprintf(partitionID, sizeof(partitionID), "0x%02x,",
- *(UInt8 *)(_nvramImage + currentOffset));
- strncpy(partitionID + 5,
- (const char *)(_nvramImage + currentOffset + 4), 12);
- partitionID[17] = '\0';
-
- partitionOffsetNumber = OSNumber::withNumber(partitionOffset, 32);
- partitionLengthNumber = OSNumber::withNumber(partitionLength, 32);
-
- // Save the partition offset and length
- _nvramPartitionOffsets->setObject(partitionID, partitionOffsetNumber);
- _nvramPartitionLengths->setObject(partitionID, partitionLengthNumber);
-
- partitionOffsetNumber->release();
- partitionLengthNumber->release();
- }
- currentOffset += currentLength;
+ if (getPlatform()->getBootROMType()) {
+ // Look through the partitions to find the OF, MacOS partitions.
+ while (currentOffset < kIODTNVRAMImageSize) {
+ currentLength = ((UInt16 *)(_nvramImage + currentOffset))[1] * 16;
+
+ partitionOffset = currentOffset + 16;
+ partitionLength = currentLength - 16;
+
+ if (strncmp((const char *)_nvramImage + currentOffset + 4,
+ kIODTNVRAMOFPartitionName, 12) == 0) {
+ _ofPartitionOffset = partitionOffset;
+ _ofPartitionSize = partitionLength;
+ } else if (strncmp((const char *)_nvramImage + currentOffset + 4,
+ kIODTNVRAMXPRAMPartitionName, 12) == 0) {
+ _xpramPartitionOffset = partitionOffset;
+ _xpramPartitionSize = kIODTNVRAMXPRAMSize;
+ _nrPartitionOffset = _xpramPartitionOffset + _xpramPartitionSize;
+ _nrPartitionSize = partitionLength - _xpramPartitionSize;
+ } else if (strncmp((const char *)_nvramImage + currentOffset + 4,
+ kIODTNVRAMPanicInfoPartitonName, 12) == 0) {
+ _piPartitionOffset = partitionOffset;
+ _piPartitionSize = partitionLength;
+ } else if (strncmp((const char *)_nvramImage + currentOffset + 4,
+ kIODTNVRAMFreePartitionName, 12) == 0) {
+ freePartitionOffset = currentOffset;
+ freePartitionSize = currentLength;
+ } else {
+ // Construct the partition ID from the signature and name.
+ sprintf(partitionID, "0x%02x,",
+ *(UInt8 *)(_nvramImage + currentOffset));
+ strncpy(partitionID + 5,
+ (const char *)(_nvramImage + currentOffset + 4), 12);
+ partitionID[17] = '\0';
+
+ partitionOffsetNumber = OSNumber::withNumber(partitionOffset, 32);
+ partitionLengthNumber = OSNumber::withNumber(partitionLength, 32);
+
+ // Save the partition offset and length
+ _nvramPartitionOffsets->setObject(partitionID, partitionOffsetNumber);
+ _nvramPartitionLengths->setObject(partitionID, partitionLengthNumber);
+
+ partitionOffsetNumber->release();
+ partitionLengthNumber->release();
+ }
+ currentOffset += currentLength;
+ }
+ } else {
+ // Use the fixed address for old world machines.
+ _ofPartitionOffset = 0x1800;
+ _ofPartitionSize = 0x0800;
+ _xpramPartitionOffset = 0x1300;
+ _xpramPartitionSize = 0x0100;
+ _nrPartitionOffset = 0x1400;
+ _nrPartitionSize = 0x0400;
}
if (_ofPartitionOffset != 0xFFFFFFFF)
_ofImage = _nvramImage + _ofPartitionOffset;
+ if (_xpramPartitionOffset != 0xFFFFFFFF)
+ _xpramImage = _nvramImage + _xpramPartitionOffset;
+ if (_nrPartitionOffset != 0xFFFFFFFF)
+ _nrImage = _nvramImage + _nrPartitionOffset;
if (_piPartitionOffset == 0xFFFFFFFF) {
if (freePartitionSize > 0x20) {
@@ -227,152 +189,99 @@
// Set the partition checksum.
_nvramImage[freePartitionOffset + 1] =
calculatePartitionChecksum(_nvramImage + freePartitionOffset);
-
- if (_nvramController != 0) {
- _nvramController->write(0, _nvramImage, kIODTNVRAMImageSize);
- }
+
+ // Set the nvram image as dirty.
+ _nvramImageDirty = true;
}
} else {
_piImage = _nvramImage + _piPartitionOffset;
}
- _lastDeviceSync = 0;
- _freshInterval = TRUE; // we will allow sync() even before the first 15 minutes have passed.
-
initOFVariables();
}
-void IODTNVRAM::syncInternal(bool rateLimit)
-{
- // Don't try to perform controller operations if none has been registered.
- if (_nvramController == 0) return;
-
- // Rate limit requests to sync. Drivers that need this rate limiting will
- // shadow the data and only write to flash when they get a sync call
- if (rateLimit && !safeToSync()) return;
-
+void IODTNVRAM::sync(void)
+{
+ if (!_nvramImageDirty && !_ofImageDirty) return;
+
+ // Don't try to sync OF Variables if the system has already paniced.
+ if (!_systemPaniced) syncOFVariables();
+
+ _nvramController->write(0, _nvramImage, kIODTNVRAMImageSize);
_nvramController->sync();
-}
-
-void IODTNVRAM::sync(void)
-{
- syncInternal(false);
+
+ _nvramImageDirty = false;
}
bool IODTNVRAM::serializeProperties(OSSerialize *s) const
{
- bool result, hasPrivilege;
+ bool result;
UInt32 variablePerm;
const OSSymbol *key;
- OSDictionary *dict;
+ OSDictionary *dict, *tmpDict = 0;
OSCollectionIterator *iter = 0;
+ if (_ofDict == 0) return false;
+
// Verify permissions.
- hasPrivilege = (kIOReturnSuccess == IOUserClient::clientHasPrivilege(current_task(), kIONVRAMPrivilege));
-
- if (_ofDict == 0) {
- /* No nvram. Return an empty dictionary. */
- dict = OSDictionary::withCapacity(1);
- if (dict == 0) return false;
- } else {
- IOLockLock(_ofLock);
- dict = OSDictionary::withDictionary(_ofDict);
- IOLockUnlock(_ofLock);
- if (dict == 0) return false;
-
- /* Copy properties with client privilege. */
- iter = OSCollectionIterator::withCollection(dict);
- if (iter == 0) {
- dict->release();
- return false;
- }
+ result = IOUserClient::clientHasPrivilege(current_task(), kIONVRAMPrivilege);
+ if (result != kIOReturnSuccess) {
+ tmpDict = OSDictionary::withCapacity(1);
+ if (tmpDict == 0) return false;
+
+ iter = OSCollectionIterator::withCollection(_ofDict);
+ if (iter == 0) return false;
+
while (1) {
key = OSDynamicCast(OSSymbol, iter->getNextObject());
if (key == 0) break;
variablePerm = getOFVariablePerm(key);
- if ((hasPrivilege || (variablePerm != kOFVariablePermRootOnly)) &&
- ( ! (variablePerm == kOFVariablePermKernelOnly && current_task() != kernel_task) )
-#if CONFIG_MACF
- && (current_task() == kernel_task || mac_iokit_check_nvram_get(kauth_cred_get(), key->getCStringNoCopy()) == 0)
-#endif
- ) { }
- else {
- dict->removeObject(key);
- iter->reset();
+ if (variablePerm != kOFVariablePermRootOnly) {
+ tmpDict->setObject(key, _ofDict->getObject(key));
}
}
- }
-
+ dict = tmpDict;
+ } else {
+ dict = _ofDict;
+ }
+
result = dict->serialize(s);
-
- dict->release();
+
+ if (tmpDict != 0) tmpDict->release();
if (iter != 0) iter->release();
return result;
}
-OSObject *IODTNVRAM::copyProperty(const OSSymbol *aKey) const
+OSObject *IODTNVRAM::getProperty(const OSSymbol *aKey) const
{
IOReturn result;
UInt32 variablePerm;
- OSObject *theObject;
if (_ofDict == 0) return 0;
// Verify permissions.
- variablePerm = getOFVariablePerm(aKey);
result = IOUserClient::clientHasPrivilege(current_task(), kIONVRAMPrivilege);
if (result != kIOReturnSuccess) {
+ variablePerm = getOFVariablePerm(aKey);
if (variablePerm == kOFVariablePermRootOnly) return 0;
}
- if (variablePerm == kOFVariablePermKernelOnly && current_task() != kernel_task) return 0;
-
-#if CONFIG_MACF
- if (current_task() != kernel_task &&
- mac_iokit_check_nvram_get(kauth_cred_get(), aKey->getCStringNoCopy()) != 0)
- return 0;
-#endif
-
- IOLockLock(_ofLock);
- theObject = _ofDict->getObject(aKey);
- if (theObject) theObject->retain();
- IOLockUnlock(_ofLock);
-
- return theObject;
-}
-
-OSObject *IODTNVRAM::copyProperty(const char *aKey) const
+
+ return _ofDict->getObject(aKey);
+}
+
+OSObject *IODTNVRAM::getProperty(const char *aKey) const
{
const OSSymbol *keySymbol;
OSObject *theObject = 0;
- keySymbol = OSSymbol::withCString(aKey);
+ keySymbol = OSSymbol::withCStringNoCopy(aKey);
if (keySymbol != 0) {
- theObject = copyProperty(keySymbol);
+ theObject = getProperty(keySymbol);
keySymbol->release();
}
- return theObject;
-}
-
-OSObject *IODTNVRAM::getProperty(const OSSymbol *aKey) const
-{
- OSObject *theObject;
-
- theObject = copyProperty(aKey);
- if (theObject) theObject->release();
-
- return theObject;
-}
-
-OSObject *IODTNVRAM::getProperty(const char *aKey) const
-{
- OSObject *theObject;
-
- theObject = copyProperty(aKey);
- if (theObject) theObject->release();
-
return theObject;
}
@@ -386,21 +295,19 @@
if (_ofDict == 0) return false;
// Verify permissions.
- propPerm = getOFVariablePerm(aKey);
result = IOUserClient::clientHasPrivilege(current_task(), kIONVRAMPrivilege);
if (result != kIOReturnSuccess) {
+ propPerm = getOFVariablePerm(aKey);
if (propPerm != kOFVariablePermUserWrite) return false;
}
- if (propPerm == kOFVariablePermKernelOnly && current_task() != kernel_task) return 0;
-
+
+ // Don't allow creation of new properties on old world machines.
+ if (getPlatform()->getBootROMType() == 0) {
+ if (_ofDict->getObject(aKey) == 0) return false;
+ }
+
// Don't allow change of 'aapl,panic-info'.
if (aKey->isEqualTo(kIODTNVRAMPanicInfoKey)) return false;
-
-#if CONFIG_MACF
- if (current_task() != kernel_task &&
- mac_iokit_check_nvram_set(kauth_cred_get(), aKey->getCStringNoCopy(), anObject) != 0)
- return false;
-#endif
// Make sure the object is of the correct type.
propType = getOFVariableType(aKey);
@@ -430,13 +337,15 @@
}
if (propObject == 0) return false;
-
- IOLockLock(_ofLock);
+
result = _ofDict->setObject(aKey, propObject);
- IOLockUnlock(_ofLock);
-
+
if (result) {
- syncOFVariables();
+ if (getPlatform()->getBootROMType() == 0) {
+ updateOWBootArgs(aKey, propObject);
+ }
+
+ _ofImageDirty = true;
}
return result;
@@ -450,33 +359,24 @@
if (_ofDict == 0) return;
// Verify permissions.
- propPerm = getOFVariablePerm(aKey);
result = IOUserClient::clientHasPrivilege(current_task(), kIOClientPrivilegeAdministrator);
if (result != kIOReturnSuccess) {
+ propPerm = getOFVariablePerm(aKey);
if (propPerm != kOFVariablePermUserWrite) return;
}
- if (propPerm == kOFVariablePermKernelOnly && current_task() != kernel_task) return;
+
+ // Don't allow removal of properties on old world machines.
+ if (getPlatform()->getBootROMType() == 0) return;
// Don't allow change of 'aapl,panic-info'.
if (aKey->isEqualTo(kIODTNVRAMPanicInfoKey)) return;
-#if CONFIG_MACF
- if (current_task() != kernel_task &&
- mac_iokit_check_nvram_delete(kauth_cred_get(), aKey->getCStringNoCopy()) != 0)
- return;
-#endif
-
// If the object exists, remove it from the dictionary.
-
- IOLockLock(_ofLock);
result = _ofDict->getObject(aKey) != 0;
if (result) {
_ofDict->removeObject(aKey);
- }
- IOLockUnlock(_ofLock);
-
- if (result) {
- syncOFVariables();
+
+ _ofImageDirty = true;
}
}
@@ -503,33 +403,18 @@
if (object == 0) continue;
if (key->isEqualTo(kIONVRAMDeletePropertyKey)) {
- tmpStr = OSDynamicCast(OSString, object);
- if (tmpStr != 0) {
- key = OSSymbol::withString(tmpStr);
- removeProperty(key);
- key->release();
- result = true;
- } else {
- result = false;
- }
- } else if(key->isEqualTo(kIONVRAMSyncNowPropertyKey) || key->isEqualTo(kIONVRAMForceSyncNowPropertyKey)) {
- tmpStr = OSDynamicCast(OSString, object);
- if (tmpStr != 0) {
-
- result = true;
-
- // We still want to throttle NVRAM commit rate for SyncNow. ForceSyncNow is provided as a really big hammer.
-
- syncInternal(key->isEqualTo(kIONVRAMSyncNowPropertyKey));
-
- } else {
- result = false;
- }
- }
- else {
- result = setProperty(key, object);
- }
-
+ tmpStr = OSDynamicCast(OSString, object);
+ if (tmpStr != 0) {
+ key = OSSymbol::withString(tmpStr);
+ removeProperty(key);
+ key->release();
+ result = true;
+ } else {
+ result = false;
+ }
+ } else {
+ result = setProperty(key, object);
+ }
}
iter->release();
@@ -541,13 +426,31 @@
IOReturn IODTNVRAM::readXPRAM(IOByteCount offset, UInt8 *buffer,
IOByteCount length)
{
- return kIOReturnUnsupported;
+ if (_xpramImage == 0) return kIOReturnUnsupported;
+
+ if ((buffer == 0) || (length == 0) ||
+ (offset + length > kIODTNVRAMXPRAMSize))
+ return kIOReturnBadArgument;
+
+ bcopy(_nvramImage + _xpramPartitionOffset + offset, buffer, length);
+
+ return kIOReturnSuccess;
}
IOReturn IODTNVRAM::writeXPRAM(IOByteCount offset, UInt8 *buffer,
IOByteCount length)
{
- return kIOReturnUnsupported;
+ if (_xpramImage == 0) return kIOReturnUnsupported;
+
+ if ((buffer == 0) || (length == 0) ||
+ (offset + length > kIODTNVRAMXPRAMSize))
+ return kIOReturnBadArgument;
+
+ bcopy(buffer, _nvramImage + _xpramPartitionOffset + offset, length);
+
+ _nvramImageDirty = true;
+
+ return kIOReturnSuccess;
}
IOReturn IODTNVRAM::readNVRAMProperty(IORegistryEntry *entry,
@@ -556,7 +459,10 @@
{
IOReturn err;
- err = readNVRAMPropertyType1(entry, name, value);
+ if (getPlatform()->getBootROMType())
+ err = readNVRAMPropertyType1(entry, name, value);
+ else
+ err = readNVRAMPropertyType0(entry, name, value);
return err;
}
@@ -567,7 +473,10 @@
{
IOReturn err;
- err = writeNVRAMPropertyType1(entry, name, value);
+ if (getPlatform()->getBootROMType())
+ err = writeNVRAMPropertyType1(entry, name, value);
+ else
+ err = writeNVRAMPropertyType0(entry, name, value);
return err;
}
@@ -628,14 +537,12 @@
bcopy(buffer, _nvramImage + partitionOffset + offset, length);
- if (_nvramController != 0) {
- _nvramController->write(0, _nvramImage, kIODTNVRAMImageSize);
- }
+ _nvramImageDirty = true;
return kIOReturnSuccess;
}
-IOByteCount IODTNVRAM::savePanicInfo(UInt8 *buffer, IOByteCount length)
+UInt32 IODTNVRAM::savePanicInfo(UInt8 *buffer, IOByteCount length)
{
if ((_piImage == 0) || (length <= 0)) return 0;
@@ -648,18 +555,10 @@
// Save the Panic Info length.
*(UInt32 *)_piImage = length;
- if (_nvramController != 0) {
- _nvramController->write(0, _nvramImage, kIODTNVRAMImageSize);
- }
- /*
- * This prevents OF variables from being committed if the system has panicked
- */
+ _nvramImageDirty = true;
+
_systemPaniced = true;
- /* The call to sync() forces the NVRAM controller to write the panic info
- * partition to NVRAM.
- */
- sync();
-
+
return length;
}
@@ -678,135 +577,277 @@
return csum;
}
+struct OWVariablesHeader {
+ UInt16 owMagic;
+ UInt8 owVersion;
+ UInt8 owPages;
+ UInt16 owChecksum;
+ UInt16 owHere;
+ UInt16 owTop;
+ UInt16 owNext;
+ UInt32 owFlags;
+ UInt32 owNumbers[9];
+ struct {
+ UInt16 offset;
+ UInt16 length;
+ } owStrings[10];
+};
+typedef struct OWVariablesHeader OWVariablesHeader;
+
IOReturn IODTNVRAM::initOFVariables(void)
{
- UInt32 cnt;
+ UInt32 cnt, propOffset, propType;
UInt8 *propName, *propData;
UInt32 propNameLength, propDataLength;
const OSSymbol *propSymbol;
OSObject *propObject;
+ OWVariablesHeader *owHeader;
if (_ofImage == 0) return kIOReturnNotReady;
- _ofDict = OSDictionary::withCapacity(1);
- _ofLock = IOLockAlloc();
- if (!_ofDict || !_ofLock) return kIOReturnNoMemory;
-
- cnt = 0;
- while (cnt < _ofPartitionSize) {
- // Break if there is no name.
- if (_ofImage[cnt] == '\0') break;
-
- // Find the length of the name.
- propName = _ofImage + cnt;
- for (propNameLength = 0; (cnt + propNameLength) < _ofPartitionSize;
- propNameLength++) {
- if (_ofImage[cnt + propNameLength] == '=') break;
- }
-
- // Break if the name goes past the end of the partition.
- if ((cnt + propNameLength) >= _ofPartitionSize) break;
- cnt += propNameLength + 1;
-
- propData = _ofImage + cnt;
- for (propDataLength = 0; (cnt + propDataLength) < _ofPartitionSize;
- propDataLength++) {
- if (_ofImage[cnt + propDataLength] == '\0') break;
- }
-
- // Break if the data goes past the end of the partition.
- if ((cnt + propDataLength) >= _ofPartitionSize) break;
- cnt += propDataLength + 1;
-
- if (convertPropToObject(propName, propNameLength,
- propData, propDataLength,
- &propSymbol, &propObject)) {
+ _ofDict = OSDictionary::withCapacity(1);
+ if (_ofDict == 0) return kIOReturnNoMemory;
+
+ if (getPlatform()->getBootROMType()) {
+ cnt = 0;
+ while (cnt < _ofPartitionSize) {
+ // Break if there is no name.
+ if (_ofImage[cnt] == '\0') break;
+
+ // Find the length of the name.
+ propName = _ofImage + cnt;
+ for (propNameLength = 0; (cnt + propNameLength) < _ofPartitionSize;
+ propNameLength++) {
+ if (_ofImage[cnt + propNameLength] == '=') break;
+ }
+
+ // Break if the name goes past the end of the partition.
+ if ((cnt + propNameLength) >= _ofPartitionSize) break;
+ cnt += propNameLength + 1;
+
+ propData = _ofImage + cnt;
+ for (propDataLength = 0; (cnt + propDataLength) < _ofPartitionSize;
+ propDataLength++) {
+ if (_ofImage[cnt + propDataLength] == '\0') break;
+ }
+
+ // Break if the data goes past the end of the partition.
+ if ((cnt + propDataLength) >= _ofPartitionSize) break;
+ cnt += propDataLength + 1;
+
+ if (convertPropToObject(propName, propNameLength,
+ propData, propDataLength,
+ &propSymbol, &propObject)) {
+ _ofDict->setObject(propSymbol, propObject);
+ propSymbol->release();
+ propObject->release();
+ }
+ }
+
+ // Create the boot-args property if it is not in the dictionary.
+ if (_ofDict->getObject("boot-args") == 0) {
+ propObject = OSString::withCStringNoCopy("");
+ if (propObject != 0) {
+ _ofDict->setObject("boot-args", propObject);
+ propObject->release();
+ }
+ }
+
+ // Create the 'aapl,panic-info' property if needed.
+ if (_piImage != 0) {
+ propDataLength = *(UInt32 *)_piImage;
+ if ((propDataLength != 0) && (propDataLength < (_piPartitionSize - 4))) {
+ propObject = OSData::withBytes(_piImage + 4, propDataLength);
+ _ofDict->setObject(kIODTNVRAMPanicInfoKey, propObject);
+ propObject->release();
+
+ // Clear the length from _piImage and mark dirty.
+ *(UInt32 *)_piImage = 0;
+ _nvramImageDirty = true;
+ }
+ }
+ } else {
+ owHeader = (OWVariablesHeader *)_ofImage;
+ if (!validateOWChecksum(_ofImage)) {
+ _ofDict->release();
+ _ofDict = 0;
+ return kIOReturnBadMedia;
+ }
+
+ cnt = 0;
+ while (1) {
+ if (!getOWVariableInfo(cnt++, &propSymbol, &propType, &propOffset))
+ break;
+
+ switch (propType) {
+ case kOFVariableTypeBoolean :
+ propObject = OSBoolean::withBoolean(owHeader->owFlags & propOffset);
+ break;
+
+ case kOFVariableTypeNumber :
+ propObject = OSNumber::withNumber(owHeader->owNumbers[propOffset], 32);
+ break;
+
+ case kOFVariableTypeString :
+ propData = _ofImage + owHeader->owStrings[propOffset].offset -
+ _ofPartitionOffset;
+ propDataLength = owHeader->owStrings[propOffset].length;
+ propName = IONew(UInt8, propDataLength + 1);
+ if (propName != 0) {
+ strncpy((char *)propName, (const char *)propData, propDataLength);
+ propName[propDataLength] = '\0';
+ propObject = OSString::withCString((const char *)propName);
+ IODelete(propName, UInt8, propDataLength + 1);
+ }
+ break;
+ }
+
+ if (propObject == 0) break;
+
_ofDict->setObject(propSymbol, propObject);
propSymbol->release();
propObject->release();
}
- }
-
- // Create the boot-args property if it is not in the dictionary.
- if (_ofDict->getObject("boot-args") == 0) {
- propObject = OSString::withCStringNoCopy("");
- if (propObject != 0) {
- _ofDict->setObject("boot-args", propObject);
- propObject->release();
- }
- }
-
- // Create the 'aapl,panic-info' property if needed.
- if (_piImage != 0) {
- propDataLength = *(UInt32 *)_piImage;
- if ((propDataLength != 0) && (propDataLength <= (_piPartitionSize - 4))) {
- propObject = OSData::withBytes(_piImage + 4, propDataLength);
- _ofDict->setObject(kIODTNVRAMPanicInfoKey, propObject);
- propObject->release();
-
- // Clear the length from _piImage and mark dirty.
- *(UInt32 *)_piImage = 0;
- if (_nvramController != 0) {
- _nvramController->write(0, _nvramImage, kIODTNVRAMImageSize);
+
+ // Create the boot-args property.
+ propSymbol = OSSymbol::withCString("boot-command");
+ if (propSymbol != 0) {
+ propObject = _ofDict->getObject(propSymbol);
+ if (propObject != 0) {
+ updateOWBootArgs(propSymbol, propObject);
}
- }
- }
-
+ propSymbol->release();
+ }
+ }
+
return kIOReturnSuccess;
}
IOReturn IODTNVRAM::syncOFVariables(void)
{
bool ok;
- UInt32 length, maxLength;
+ UInt32 cnt, length, maxLength;
+ UInt32 curOffset, tmpOffset, tmpType, tmpDataLength;
UInt8 *buffer, *tmpBuffer;
+ const UInt8 *tmpData;
const OSSymbol *tmpSymbol;
OSObject *tmpObject;
+ OSBoolean *tmpBoolean;
+ OSNumber *tmpNumber;
+ OSString *tmpString;
OSCollectionIterator *iter;
-
- if ((_ofImage == 0) || (_ofDict == 0) || _systemPaniced) return kIOReturnNotReady;
-
- buffer = tmpBuffer = IONew(UInt8, _ofPartitionSize);
- if (buffer == 0) return kIOReturnNoMemory;
- bzero(buffer, _ofPartitionSize);
-
- ok = true;
- maxLength = _ofPartitionSize;
-
- IOLockLock(_ofLock);
- iter = OSCollectionIterator::withCollection(_ofDict);
- if (iter == 0) ok = false;
-
- while (ok) {
- tmpSymbol = OSDynamicCast(OSSymbol, iter->getNextObject());
- if (tmpSymbol == 0) break;
-
- // Don't save 'aapl,panic-info'.
- if (tmpSymbol->isEqualTo(kIODTNVRAMPanicInfoKey)) continue;
-
- tmpObject = _ofDict->getObject(tmpSymbol);
-
- length = maxLength;
- ok = convertObjectToProp(tmpBuffer, &length, tmpSymbol, tmpObject);
+ OWVariablesHeader *owHeader, *owHeaderOld;
+
+ if ((_ofImage == 0) || (_ofDict == 0)) return kIOReturnNotReady;
+
+ if (!_ofImageDirty) return kIOReturnSuccess;
+
+ if (getPlatform()->getBootROMType()) {
+ buffer = tmpBuffer = IONew(UInt8, _ofPartitionSize);
+ if (buffer == 0) return kIOReturnNoMemory;
+ bzero(buffer, _ofPartitionSize);
+
+ ok = true;
+ maxLength = _ofPartitionSize;
+
+ iter = OSCollectionIterator::withCollection(_ofDict);
+ if (iter == 0) ok = false;
+
+ while (ok) {
+ tmpSymbol = OSDynamicCast(OSSymbol, iter->getNextObject());
+ if (tmpSymbol == 0) break;
+
+ // Don't save 'aapl,panic-info'.
+ if (tmpSymbol->isEqualTo(kIODTNVRAMPanicInfoKey)) continue;
+
+ tmpObject = _ofDict->getObject(tmpSymbol);
+
+ length = maxLength;
+ ok = convertObjectToProp(tmpBuffer, &length, tmpSymbol, tmpObject);
+ if (ok) {
+ tmpBuffer += length;
+ maxLength -= length;
+ }
+ }
+ iter->release();
+
if (ok) {
- tmpBuffer += length;
- maxLength -= length;
- }
- }
- iter->release();
- IOLockUnlock(_ofLock);
-
- if (ok) {
- bcopy(buffer, _ofImage, _ofPartitionSize);
- }
-
- IODelete(buffer, UInt8, _ofPartitionSize);
-
- if (!ok) return kIOReturnBadArgument;
-
- if (_nvramController != 0) {
- _nvramController->write(0, _nvramImage, kIODTNVRAMImageSize);
- }
+ bcopy(buffer, _ofImage, _ofPartitionSize);
+ }
+
+ IODelete(buffer, UInt8, _ofPartitionSize);
+
+ if (!ok) return kIOReturnBadArgument;
+ } else {
+ buffer = IONew(UInt8, _ofPartitionSize);
+ if (buffer == 0) return kIOReturnNoMemory;
+ bzero(buffer, _ofPartitionSize);
+
+ owHeader = (OWVariablesHeader *)buffer;
+ owHeaderOld = (OWVariablesHeader *)_ofImage;
+
+ owHeader->owMagic = owHeaderOld->owMagic;
+ owHeader->owVersion = owHeaderOld->owVersion;
+ owHeader->owPages = owHeaderOld->owPages;
+
+ curOffset = _ofPartitionSize;
+
+ ok = true;
+ cnt = 0;
+ while (ok) {
+ if (!getOWVariableInfo(cnt++, &tmpSymbol, &tmpType, &tmpOffset))
+ break;
+
+ tmpObject = _ofDict->getObject(tmpSymbol);
+
+ switch (tmpType) {
+ case kOFVariableTypeBoolean :
+ tmpBoolean = OSDynamicCast(OSBoolean, tmpObject);
+ if (tmpBoolean->getValue()) owHeader->owFlags |= tmpOffset;
+ break;
+
+ case kOFVariableTypeNumber :
+ tmpNumber = OSDynamicCast(OSNumber, tmpObject);
+ owHeader->owNumbers[tmpOffset] = tmpNumber->unsigned32BitValue();
+ break;
+
+ case kOFVariableTypeString :
+ tmpString = OSDynamicCast(OSString, tmpObject);
+ tmpData = (const UInt8 *)tmpString->getCStringNoCopy();
+ tmpDataLength = tmpString->getLength();
+
+ if ((curOffset - tmpDataLength) < sizeof(OWVariablesHeader)) {
+ ok = false;
+ break;
+ }
+
+ owHeader->owStrings[tmpOffset].length = tmpDataLength;
+ curOffset -= tmpDataLength;
+ owHeader->owStrings[tmpOffset].offset = curOffset + _ofPartitionOffset;
+ if (tmpDataLength != 0)
+ bcopy(tmpData, buffer + curOffset, tmpDataLength);
+ break;
+ }
+ }
+
+ if (ok) {
+ owHeader->owHere = _ofPartitionOffset + sizeof(OWVariablesHeader);
+ owHeader->owTop = _ofPartitionOffset + curOffset;
+ owHeader->owNext = 0;
+
+ owHeader->owChecksum = 0;
+ owHeader->owChecksum = ~generateOWChecksum(buffer);
+
+ bcopy(buffer, _ofImage, _ofPartitionSize);
+ }
+
+ IODelete(buffer, UInt8, _ofPartitionSize);
+
+ if (!ok) return kIOReturnBadArgument;
+ }
+
+ _ofImageDirty = false;
+ _nvramImageDirty = true;
return kIOReturnSuccess;
}
@@ -871,7 +912,6 @@
{"security-mode", kOFVariableTypeString, kOFVariablePermUserRead, -1},
{"security-password", kOFVariableTypeData, kOFVariablePermRootOnly, -1},
{"boot-image", kOFVariableTypeData, kOFVariablePermUserWrite, -1},
- {"com.apple.System.fp-state", kOFVariableTypeData, kOFVariablePermKernelOnly, -1},
{0, kOFVariableTypeData, kOFVariablePermUserRead, -1}
};
@@ -1042,30 +1082,31 @@
if ((propNameLength + propDataLength + 2) > *length) return false;
// Copy the property name equal sign.
- buffer += snprintf((char *)buffer, *length, "%s=", propName);
+ sprintf((char *)buffer, "%s=", propName);
+ buffer += propNameLength + 1;
switch (propType) {
case kOFVariableTypeBoolean :
if (tmpBoolean->getValue()) {
- strlcpy((char *)buffer, "true", *length - propNameLength);
+ strcpy((char *)buffer, "true");
} else {
- strlcpy((char *)buffer, "false", *length - propNameLength);
+ strcpy((char *)buffer, "false");
}
break;
case kOFVariableTypeNumber :
tmpValue = tmpNumber->unsigned32BitValue();
if (tmpValue == 0xFFFFFFFF) {
- strlcpy((char *)buffer, "-1", *length - propNameLength);
+ strcpy((char *)buffer, "-1");
} else if (tmpValue < 1000) {
- snprintf((char *)buffer, *length - propNameLength, "%d", (uint32_t)tmpValue);
+ sprintf((char *)buffer, "%ld", tmpValue);
} else {
- snprintf((char *)buffer, *length - propNameLength, "0x%x", (uint32_t)tmpValue);
+ sprintf((char *)buffer, "0x%lx", tmpValue);
}
break;
case kOFVariableTypeString :
- strlcpy((char *)buffer, tmpString->getCStringNoCopy(), *length - propNameLength);
+ strcpy((char *)buffer, tmpString->getCStringNoCopy());
break;
case kOFVariableTypeData :
@@ -1158,8 +1199,9 @@
tmpData = IONew(UInt8, tmpDataLength + 1);
if (tmpData == 0) return;
- cnt -= strlcpy((char *)tmpData, (const char *)bootCommandData, cnt);
- strlcat((char *)tmpData, (const char *)bootArgsData, cnt);
+ strncpy((char *)tmpData, (const char *)bootCommandData, cnt);
+ tmpData[cnt] = '\0';
+ strcat((char *)tmpData, (const char *)bootArgsData);
bootCommand = OSString::withCString((const char *)tmpData);
if (bootCommand != 0) {
@@ -1177,8 +1219,55 @@
}
}
+
+// Private methods for Name Registry access.
+
+enum {
+ kMaxNVNameLength = 4,
+ kMaxNVDataLength = 8
+};
+
+#pragma options align=mac68k
+struct NVRAMProperty
+{
+ IONVRAMDescriptor header;
+ UInt8 nameLength;
+ UInt8 name[ kMaxNVNameLength ];
+ UInt8 dataLength;
+ UInt8 data[ kMaxNVDataLength ];
+};
+#pragma options align=reset
+
bool IODTNVRAM::searchNVRAMProperty(IONVRAMDescriptor *hdr, UInt32 *where)
{
+ UInt32 offset;
+ SInt32 nvEnd;
+
+ nvEnd = *((UInt16 *)_nrImage);
+ if(getPlatform()->getBootROMType()) {
+ // on NewWorld, offset to partition start
+ nvEnd -= 0x100;
+ } else {
+ // on old world, absolute
+ nvEnd -= _nrPartitionOffset;
+ }
+ if((nvEnd < 0) || (nvEnd >= kIODTNVRAMNameRegistrySize))
+ nvEnd = 2;
+
+ offset = 2;
+ while ((offset + sizeof(NVRAMProperty)) <= (UInt32)nvEnd) {
+ if (bcmp(_nrImage + offset, hdr, sizeof(*hdr)) == 0) {
+ *where = offset;
+ return true;
+ }
+ offset += sizeof(NVRAMProperty);
+ }
+
+ if ((nvEnd + sizeof(NVRAMProperty)) <= kIODTNVRAMNameRegistrySize)
+ *where = nvEnd;
+ else
+ *where = 0;
+
return false;
}
@@ -1186,17 +1275,87 @@
const OSSymbol **name,
OSData **value)
{
- return kIOReturnUnsupported;
-}
-
+ IONVRAMDescriptor hdr;
+ NVRAMProperty *prop;
+ IOByteCount length;
+ UInt32 offset;
+ IOReturn err;
+ char nameBuf[kMaxNVNameLength + 1];
+
+ if (_nrImage == 0) return kIOReturnUnsupported;
+ if ((entry == 0) || (name == 0) || (value == 0)) return kIOReturnBadArgument;
+
+ err = IODTMakeNVDescriptor(entry, &hdr);
+ if (err != kIOReturnSuccess) return err;
+
+ if (searchNVRAMProperty(&hdr, &offset)) {
+ prop = (NVRAMProperty *)(_nrImage + offset);
+
+ length = prop->nameLength;
+ if (length > kMaxNVNameLength) length = kMaxNVNameLength;
+ strncpy(nameBuf, (const char *)prop->name, length);
+ nameBuf[length] = 0;
+ *name = OSSymbol::withCString(nameBuf);
+
+ length = prop->dataLength;
+ if (length > kMaxNVDataLength) length = kMaxNVDataLength;
+ *value = OSData::withBytes(prop->data, length);
+
+ if ((*name != 0) && (*value != 0)) return kIOReturnSuccess;
+ else return kIOReturnNoMemory;
+ }
+
+ return kIOReturnNoResources;
+}
IOReturn IODTNVRAM::writeNVRAMPropertyType0(IORegistryEntry *entry,
const OSSymbol *name,
OSData *value)
{
- return kIOReturnUnsupported;
-}
-
+ IONVRAMDescriptor hdr;
+ NVRAMProperty *prop;
+ IOByteCount nameLength;
+ IOByteCount dataLength;
+ UInt32 offset;
+ IOReturn err;
+ UInt16 nvLength;
+ bool exists;
+
+ if (_nrImage == 0) return kIOReturnUnsupported;
+ if ((entry == 0) || (name == 0) || (value == 0)) return kIOReturnBadArgument;
+
+ nameLength = name->getLength();
+ dataLength = value->getLength();
+ if (nameLength > kMaxNVNameLength) return kIOReturnNoSpace;
+ if (dataLength > kMaxNVDataLength) return kIOReturnNoSpace;
+
+ err = IODTMakeNVDescriptor(entry, &hdr);
+ if (err != kIOReturnSuccess) return err;
+
+ exists = searchNVRAMProperty(&hdr, &offset);
+ if (offset == 0) return kIOReturnNoMemory;
+
+ prop = (NVRAMProperty *)(_nrImage + offset);
+ if (!exists) bcopy(&hdr, &prop->header, sizeof(hdr));
+
+ prop->nameLength = nameLength;
+ bcopy(name->getCStringNoCopy(), prop->name, nameLength);
+ prop->dataLength = dataLength;
+ bcopy(value->getBytesNoCopy(), prop->data, dataLength);
+
+ if (!exists) {
+ nvLength = offset + sizeof(NVRAMProperty);
+ if (getPlatform()->getBootROMType())
+ nvLength += 0x100;
+ else
+ nvLength += _nrPartitionOffset;
+ *((UInt16 *)_nrImage) = nvLength;
+ }
+
+ _nvramImageDirty = true;
+
+ return err;
+}
OSData *IODTNVRAM::unescapeBytesToData(const UInt8 *bytes, UInt32 length)
{
@@ -1309,11 +1468,7 @@
UInt8 byte;
if (_ofDict == 0) return err;
-
- IOLockLock(_ofLock);
data = OSDynamicCast(OSData, _ofDict->getObject(_registryPropertiesKey));
- IOLockUnlock(_ofLock);
-
if (data == 0) return err;
startPtr = (const UInt8 *) data->getBytesNoCopy();
@@ -1382,8 +1537,6 @@
settingAppleProp = IsApplePropertyName(propName->getCStringNoCopy());
// copy over existing properties for other entries
-
- IOLockLock(_ofLock);
oldData = OSDynamicCast(OSData, _ofDict->getObject(_registryPropertiesKey));
if (oldData) {
@@ -1429,79 +1582,62 @@
data = OSData::withData(oldData);
else
data = OSData::withCapacity(16);
- if (!data) ok = false;
- }
-
- if (ok && value && value->getLength()) do {
- // get entries in path
- OSArray *array = OSArray::withCapacity(5);
- if (!array) {
- ok = false;
- break;
- }
- do
- array->setObject(entry);
- while ((entry = entry->getParentEntry(gIODTPlane)));
-
- // append path
- for (int i = array->getCount() - 3;
- (entry = (IORegistryEntry *) array->getObject(i));
- i--) {
-
- name = entry->getName(gIODTPlane);
- comp = entry->getLocation(gIODTPlane);
- if (comp) ok &= data->appendBytes("/@", 2);
- else {
- if (!name) continue;
- ok &= data->appendByte('/', 1);
- comp = name;
- }
- ok &= data->appendBytes(comp, strlen(comp));
- }
- ok &= data->appendByte(0, 1);
- array->release();
-
- // append prop name
- ok &= data->appendBytes(propName->getCStringNoCopy(), propName->getLength() + 1);
-
- // append escaped data
- oldData = escapeDataToData(value);
- ok &= (oldData != 0);
- if (ok) ok &= data->appendBytes(oldData);
-
- } while (false);
-
+ if (!data)
+ return kIOReturnNoMemory;
+ }
+
+ if (value && value->getLength()) {
+ // get entries in path
+ OSArray *array = OSArray::withCapacity(5);
+ if (!array) {
+ data->release();
+ return kIOReturnNoMemory;
+ }
+ do
+ array->setObject(entry);
+ while ((entry = entry->getParentEntry(gIODTPlane)));
+
+ // append path
+ for (int i = array->getCount() - 3;
+ (entry = (IORegistryEntry *) array->getObject(i));
+ i--) {
+
+ name = entry->getName(gIODTPlane);
+ comp = entry->getLocation(gIODTPlane);
+ if( comp && (0 == strcmp("pci", name))
+ && (0 == strcmp("80000000", comp))) {
+ // yosemite hack
+ comp = "/pci@80000000";
+ } else {
+ if (comp)
+ ok &= data->appendBytes("/@", 2);
+ else {
+ if (!name)
+ continue;
+ ok &= data->appendByte('/', 1);
+ comp = name;
+ }
+ }
+ ok &= data->appendBytes(comp, strlen(comp));
+ }
+ ok &= data->appendByte(0, 1);
+ array->release();
+
+ // append prop name
+ ok &= data->appendBytes(propName->getCStringNoCopy(), propName->getLength() + 1);
+
+ // append escaped data
+ oldData = escapeDataToData(value);
+ ok &= (oldData != 0);
+ if (ok)
+ ok &= data->appendBytes(oldData);
+ }
if (ok) {
ok = _ofDict->setObject(_registryPropertiesKey, data);
- }
-
- IOLockUnlock(_ofLock);
- if (data) data->release();
-
- if (ok) syncOFVariables();
+ if (ok)
+ _ofImageDirty = true;
+ }
+ data->release();
return ok ? kIOReturnSuccess : kIOReturnNoMemory;
}
-
-bool IODTNVRAM::safeToSync(void)
-{
- AbsoluteTime delta;
- UInt64 delta_ns;
- SInt32 delta_secs;
-
- // delta interval went by
- clock_get_uptime(&delta);
-
- // Figure it in seconds.
- absolutetime_to_nanoseconds(delta, &delta_ns);
- delta_secs = (SInt32)(delta_ns / NSEC_PER_SEC);
-
- if ((delta_secs > (_lastDeviceSync + MIN_SYNC_NOW_INTERVAL)) || _freshInterval)
- {
- _lastDeviceSync = delta_secs;
- _freshInterval = FALSE;
- return TRUE;
- }
-
- return FALSE;
-}