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OpenCoreKernel.c
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OpenCoreKernel.c
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/** @file
OpenCore driver.
Copyright (c) 2019, vit9696. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "ProcessorBind.h"
#include <OpenCore.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/OcAfterBootCompatLib.h>
#include <Library/OcAppleKernelLib.h>
#include <Library/OcMiscLib.h>
#include <Library/OcAppleImg4Lib.h>
#include <Library/OcStringLib.h>
#include <Library/OcVirtualFsLib.h>
#include <Library/PrintLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
STATIC OC_STORAGE_CONTEXT *mOcStorage;
STATIC OC_GLOBAL_CONFIG *mOcConfiguration;
STATIC OC_CPU_INFO *mOcCpuInfo;
STATIC UINT8 mKernelDigest[SHA384_DIGEST_SIZE];
STATIC UINT32 mOcDarwinVersion;
STATIC BOOLEAN mUse32BitKernel;
STATIC CACHELESS_CONTEXT mOcCachelessContext;
STATIC BOOLEAN mOcCachelessInProgress;
STATIC
VOID
OcKernelConfigureCapabilities (
IN OUT EFI_LOADED_IMAGE_PROTOCOL *LoadedImage,
IN UINT32 Capabilities
)
{
CONST CHAR8 *KernelArch;
CHAR8 *AppleArchValue;
CONST CHAR8 *NewArguments[2];
UINT32 ArgumentCount;
UINT32 RequestedArch;
BOOLEAN HasAppleArch;
UINT32 KernelVersion;
BOOLEAN IsSnowLeo;
BOOLEAN IsLion;
DEBUG ((DEBUG_VERBOSE, "OC: Supported boot capabilities %u\n", Capabilities));
//
// Reset to the default value.
// Capabilities will always have K64 stripped when compiled for IA32.
//
mUse32BitKernel = (Capabilities & OC_KERN_CAPABILITY_K64_U64) == 0;
//
// Skip if not Apple image.
//
if (LoadedImage->FilePath == NULL
|| (OcGetBootDevicePathType (LoadedImage->FilePath, NULL, NULL) & OC_BOOT_APPLE_ANY) == 0) {
return;
}
//
// arch boot argument overrides any compatibility checks.
//
HasAppleArch = OcCheckArgumentFromEnv (
LoadedImage,
gRT->GetVariable,
"arch=",
L_STR_LEN ("arch="),
&AppleArchValue
);
if (HasAppleArch) {
mUse32BitKernel = AsciiStrCmp (AppleArchValue, "i386") == 0;
DEBUG ((DEBUG_INFO, "OC: Arch %a overrides capabilities %u\n", AppleArchValue, Capabilities));
FreePool (AppleArchValue);
return;
}
//
// Determine requested arch.
//
KernelArch = OC_BLOB_GET (&mOcConfiguration->Kernel.Scheme.KernelArch);
if (AsciiStrCmp (KernelArch, "x86_64") == 0) {
RequestedArch = OC_KERN_CAPABILITY_K64_U64;
} else if (AsciiStrCmp (KernelArch, "i386") == 0) {
RequestedArch = OC_KERN_CAPABILITY_K32_U64;
} else if (AsciiStrCmp (KernelArch, "i386-user32") == 0) {
RequestedArch = OC_KERN_CAPABILITY_K32_U32;
} else {
RequestedArch = 0;
}
//
// Determine the current operating system.
//
IsSnowLeo = FALSE;
IsLion = FALSE;
if ((Capabilities & OC_KERN_CAPABILITY_ALL) == OC_KERN_CAPABILITY_ALL) {
KernelVersion = KERNEL_VERSION_SNOW_LEOPARD_MIN;
IsSnowLeo = TRUE;
} else if ((Capabilities & OC_KERN_CAPABILITY_ALL) == OC_KERN_CAPABILITY_K32_K64_U64) {
KernelVersion = KERNEL_VERSION_LION_MIN;
IsLion = TRUE;
} else if ((Capabilities & OC_KERN_CAPABILITY_ALL) == OC_KERN_CAPABILITY_K32_U32_U64) {
KernelVersion = KERNEL_VERSION_LEOPARD_MIN;
} else {
KernelVersion = KERNEL_VERSION_MOUNTAIN_LION_MIN;
}
//
// In automatic mode, if we do not support SSSE3 and can downgrade to U32, do it.
//
if (RequestedArch == 0
&& (mOcCpuInfo->ExtFeatures & CPUID_EXTFEATURE_EM64T) != 0
&& (mOcCpuInfo->Features & CPUID_FEATURE_SSSE3) == 0
&& (Capabilities & OC_KERN_CAPABILITY_K32_U32) != 0
&& (Capabilities & OC_KERN_CAPABILITY_K32_K64_U64) != 0) {
DEBUG ((DEBUG_INFO, "OC: Missing SSSE3 disables U64 capabilities %u\n", Capabilities));
Capabilities &= ~(OC_KERN_CAPABILITY_K32_K64_U64);
}
//
// If we support K64 mode, check whether the board supports it.
//
if ((Capabilities & OC_KERN_CAPABILITY_K64_U64) != 0
&& !OcPlatformIs64BitSupported (KernelVersion)) {
DEBUG ((DEBUG_INFO, "OC: K64 forbidden due to current platform on version %u\n", KernelVersion));
Capabilities &= ~(OC_KERN_CAPABILITY_K64_U64);
}
//
// If we are not choosing the architecture automatically, try to use the requested one.
// Otherwise try best available.
//
if (RequestedArch != 0 && (Capabilities & RequestedArch) != 0) {
Capabilities = RequestedArch;
} else if ((Capabilities & OC_KERN_CAPABILITY_K64_U64) != 0) {
Capabilities = OC_KERN_CAPABILITY_K64_U64;
} else if ((Capabilities & OC_KERN_CAPABILITY_K32_U64) != 0) {
Capabilities = OC_KERN_CAPABILITY_K32_U64;
} else if ((Capabilities & OC_KERN_CAPABILITY_K32_U32) != 0) {
Capabilities = OC_KERN_CAPABILITY_K32_U32;
} else {
ASSERT (FALSE);
}
//
// Pass arch argument when we are:
// - SnowLeo64 and try to boot x86_64.
// - SnowLeo64 or Lion64 and try to boot i386.
//
ArgumentCount = 0;
if (Capabilities == OC_KERN_CAPABILITY_K64_U64 && IsSnowLeo) {
NewArguments[ArgumentCount++] = "arch=x86_64";
} else if (Capabilities != OC_KERN_CAPABILITY_K64_U64 && (IsSnowLeo || IsLion)) {
NewArguments[ArgumentCount++] = "arch=i386";
}
//
// Pass legacy argument when we are booting i386.
//
if (Capabilities == OC_KERN_CAPABILITY_K32_U32
&& OcCheckArgumentFromEnv (LoadedImage, gRT->GetVariable, "-legacy", L_STR_LEN ("-legacy"), NULL)) {
NewArguments[ArgumentCount++] = "-legacy";
}
//
// Update argument list.
//
if (ArgumentCount > 0) {
OcAppendArgumentsToLoadedImage (
LoadedImage,
&NewArguments[0],
ArgumentCount,
FALSE
);
}
//
// If we do not support K64 for this target, force 32.
//
if ((Capabilities & OC_KERN_CAPABILITY_K64_U64) == 0) {
mUse32BitKernel = TRUE;
}
}
STATIC
EFI_STATUS
OcKernelLoadKextsAndReserve (
IN EFI_FILE_PROTOCOL *RootFile,
IN OC_STORAGE_CONTEXT *Storage,
IN OC_GLOBAL_CONFIG *Config,
IN KERNEL_CACHE_TYPE CacheType,
OUT UINT32 *ReservedExeSize,
OUT UINT32 *ReservedInfoSize,
OUT UINT32 *NumReservedKexts
)
{
EFI_STATUS Status;
UINT32 Index;
CHAR8 *Identifier;
CHAR8 *BundlePath;
CHAR8 *Comment;
CHAR8 *PlistPath;
CHAR8 *ExecutablePath;
CHAR16 FullPath[OC_STORAGE_SAFE_PATH_MAX];
OC_KERNEL_ADD_ENTRY *Kext;
*ReservedInfoSize = PRELINK_INFO_RESERVE_SIZE;
*ReservedExeSize = 0;
*NumReservedKexts = 0;
//
// Process system kexts to be force injected.
//
for (Index = 0; Index < Config->Kernel.Force.Count; Index++) {
Kext = Config->Kernel.Force.Values[Index];
if (!Kext->Enabled) {
continue;
}
//
// Free existing data if present.
//
if (Kext->PlistData != NULL) {
FreePool (Kext->PlistData);
Kext->PlistDataSize = 0;
Kext->PlistData = NULL;
if (Kext->ImageData != NULL) {
FreePool (Kext->ImageData);
Kext->ImageDataSize = 0;
Kext->ImageData = NULL;
}
}
Identifier = OC_BLOB_GET (&Kext->Identifier);
BundlePath = OC_BLOB_GET (&Kext->BundlePath);
Comment = OC_BLOB_GET (&Kext->Comment);
PlistPath = OC_BLOB_GET (&Kext->PlistPath);
if (Identifier[0] == '\0' || BundlePath[0] == '\0' || PlistPath[0] == '\0') {
DEBUG ((DEBUG_ERROR, "OC: Forced kext %u (%a) has invalid info\n", Index, Comment));
Kext->Enabled = FALSE;
continue;
}
//
// Required for possible cacheless force injection later on.
//
AsciiUefiSlashes (BundlePath);
Status = OcUnicodeSafeSPrint (
FullPath,
sizeof (FullPath),
L"%a\\%a",
BundlePath,
PlistPath
);
if (EFI_ERROR (Status)) {
DEBUG ((
DEBUG_WARN,
"OC: Failed to fit kext path %a\\%a",
BundlePath,
PlistPath
));
continue;
}
UnicodeUefiSlashes (FullPath);
Kext->PlistData = ReadFileFromFile (
RootFile,
FullPath,
&Kext->PlistDataSize,
0
);
if (Kext->PlistData == NULL) {
DEBUG ((
DEBUG_INFO,
"OC: Plist %s is missing for forced kext %a (%a)\n",
FullPath,
BundlePath,
Comment
));
continue;
}
ExecutablePath = OC_BLOB_GET (&Kext->ExecutablePath);
if (ExecutablePath[0] != '\0') {
Status = OcUnicodeSafeSPrint (
FullPath,
sizeof (FullPath),
L"%a\\%a",
BundlePath,
ExecutablePath
);
if (EFI_ERROR (Status)) {
DEBUG ((
DEBUG_WARN,
"OC: Failed to fit kext path %a\\%a",
BundlePath,
ExecutablePath
));
FreePool (Kext->PlistData);
Kext->PlistData = NULL;
continue;
}
UnicodeUefiSlashes (FullPath);
Kext->ImageData = ReadFileFromFile (
RootFile,
FullPath,
&Kext->ImageDataSize,
0
);
if (Kext->ImageData == NULL) {
DEBUG ((
DEBUG_INFO,
"OC: Image %s is missing for kext %a (%a)\n",
FullPath,
BundlePath,
Comment
));
FreePool (Kext->PlistData);
Kext->PlistData = NULL;
continue;
}
}
if (CacheType == CacheTypeCacheless || CacheType == CacheTypeMkext) {
Status = MkextReserveKextSize (
ReservedInfoSize,
ReservedExeSize,
Kext->PlistDataSize,
Kext->ImageData,
Kext->ImageDataSize
);
} else if (CacheType == CacheTypePrelinked) {
Status = PrelinkedReserveKextSize (
ReservedInfoSize,
ReservedExeSize,
Kext->PlistDataSize,
Kext->ImageData,
Kext->ImageDataSize
);
}
if (EFI_ERROR (Status)) {
DEBUG ((
DEBUG_ERROR,
"OC: Failed to fit kext %a (%a)\n",
BundlePath,
Comment
));
FreePool (Kext->PlistData);
Kext->PlistData = NULL;
continue;
}
(*NumReservedKexts)++;
}
//
// Process kexts to be injected.
//
for (Index = 0; Index < Config->Kernel.Add.Count; Index++) {
Kext = Config->Kernel.Add.Values[Index];
if (!Kext->Enabled) {
continue;
}
if (Kext->PlistData == NULL) {
BundlePath = OC_BLOB_GET (&Kext->BundlePath);
Comment = OC_BLOB_GET (&Kext->Comment);
PlistPath = OC_BLOB_GET (&Kext->PlistPath);
if ( BundlePath[0] == '\0' || PlistPath[0] == '\0') {
DEBUG ((DEBUG_ERROR, "OC: Injected kext %u (%a) has invalid info\n", Index, Comment));
Kext->Enabled = FALSE;
continue;
}
Status = OcUnicodeSafeSPrint (
FullPath,
sizeof (FullPath),
OPEN_CORE_KEXT_PATH "%a\\%a",
BundlePath,
PlistPath
);
if (EFI_ERROR (Status)) {
DEBUG ((
DEBUG_WARN,
"OC: Failed to fit kext path %s%a\\%a",
OPEN_CORE_KEXT_PATH,
BundlePath,
PlistPath
));
Kext->Enabled = FALSE;
continue;
}
UnicodeUefiSlashes (FullPath);
Kext->PlistData = OcStorageReadFileUnicode (
Storage,
FullPath,
&Kext->PlistDataSize
);
if (Kext->PlistData == NULL) {
DEBUG ((
DEBUG_ERROR,
"OC: Plist %s is missing for kext %a (%a)\n",
FullPath,
BundlePath,
Comment
));
Kext->Enabled = FALSE;
continue;
}
ExecutablePath = OC_BLOB_GET (&Kext->ExecutablePath);
if (ExecutablePath[0] != '\0') {
Status = OcUnicodeSafeSPrint (
FullPath,
sizeof (FullPath),
OPEN_CORE_KEXT_PATH "%a\\%a",
BundlePath,
ExecutablePath
);
if (EFI_ERROR (Status)) {
DEBUG ((
DEBUG_WARN,
"OC: Failed to fit kext path %s%a\\%a",
OPEN_CORE_KEXT_PATH,
BundlePath,
ExecutablePath
));
Kext->Enabled = FALSE;
FreePool (Kext->PlistData);
Kext->PlistData = NULL;
continue;
}
UnicodeUefiSlashes (FullPath);
Kext->ImageData = OcStorageReadFileUnicode (
Storage,
FullPath,
&Kext->ImageDataSize
);
if (Kext->ImageData == NULL) {
DEBUG ((
DEBUG_ERROR,
"OC: Image %s is missing for kext %a (%a)\n",
FullPath,
BundlePath,
Comment
));
Kext->Enabled = FALSE;
FreePool (Kext->PlistData);
Kext->PlistData = NULL;
continue;
}
}
}
if (CacheType == CacheTypeCacheless || CacheType == CacheTypeMkext) {
Status = MkextReserveKextSize (
ReservedInfoSize,
ReservedExeSize,
Kext->PlistDataSize,
Kext->ImageData,
Kext->ImageDataSize
);
} else if (CacheType == CacheTypePrelinked) {
Status = PrelinkedReserveKextSize (
ReservedInfoSize,
ReservedExeSize,
Kext->PlistDataSize,
Kext->ImageData,
Kext->ImageDataSize
);
}
if (EFI_ERROR (Status)) {
DEBUG ((
DEBUG_ERROR,
"OC: Failed to fit kext %a (%a)\n",
BundlePath,
Comment
));
Kext->Enabled = FALSE;
FreePool (Kext->PlistData);
Kext->PlistData = NULL;
continue;
}
(*NumReservedKexts)++;
}
if (CacheType == CacheTypePrelinked) {
if (*ReservedExeSize > PRELINKED_KEXTS_MAX_SIZE
|| *ReservedInfoSize + *ReservedExeSize < *ReservedExeSize) {
return EFI_UNSUPPORTED;
}
}
DEBUG ((
DEBUG_INFO,
"OC: Kext reservation size info %X exe %X\n",
*ReservedInfoSize, *ReservedExeSize
));
return EFI_SUCCESS;
}
STATIC
VOID
OcKernelInjectKext (
IN OC_KERNEL_ADD_ENTRY *Kext,
IN UINT32 Index,
IN BOOLEAN IsForced,
IN KERNEL_CACHE_TYPE CacheType,
IN VOID *Context,
IN UINT32 DarwinVersion,
IN BOOLEAN Is32Bit
)
{
EFI_STATUS Status;
CONST CHAR8 *Identifier;
CONST CHAR8 *BundlePath;
CONST CHAR8 *ExecutablePath;
CONST CHAR8 *Comment;
CONST CHAR8 *Arch;
CHAR8 FullPath[OC_STORAGE_SAFE_PATH_MAX];
UINT32 MaxKernel;
UINT32 MinKernel;
if (!Kext->Enabled || Kext->PlistData == NULL) {
return;
}
Identifier = OC_BLOB_GET (&Kext->Identifier);
BundlePath = OC_BLOB_GET (&Kext->BundlePath);
Comment = OC_BLOB_GET (&Kext->Comment);
Arch = OC_BLOB_GET (&Kext->Arch);
MaxKernel = OcParseDarwinVersion (OC_BLOB_GET (&Kext->MaxKernel));
MinKernel = OcParseDarwinVersion (OC_BLOB_GET (&Kext->MinKernel));
if (AsciiStrCmp (Arch, Is32Bit ? "x86_64" : "i386") == 0) {
DEBUG ((
DEBUG_INFO,
"OC: %a%a injection skips %a (%a) kext at %u due to arch %a != %a\n",
PRINT_KERNEL_CACHE_TYPE (CacheType),
IsForced ? " force" : "",
BundlePath,
Comment,
Index,
Arch,
Is32Bit ? "i386" : "x86_64"
));
return;
}
if (!OcMatchDarwinVersion (DarwinVersion, MinKernel, MaxKernel)) {
DEBUG ((
DEBUG_INFO,
"OC: %a%a injection skips %a (%a) kext at %u due to version %u <= %u <= %u\n",
PRINT_KERNEL_CACHE_TYPE (CacheType),
IsForced ? " force" : "",
BundlePath,
Comment,
Index,
MinKernel,
DarwinVersion,
MaxKernel
));
return;
}
if (Kext->ImageData != NULL) {
ExecutablePath = OC_BLOB_GET (&Kext->ExecutablePath);
} else {
ExecutablePath = NULL;
}
if (!IsForced) {
Status = OcAsciiSafeSPrint (FullPath, sizeof (FullPath), "/Library/Extensions/%a", BundlePath);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_WARN, "OC: Failed to fit kext path /Library/Extensions/%a", BundlePath));
return;
}
}
if (CacheType == CacheTypeCacheless) {
if (IsForced
&& AsciiStrnCmp (BundlePath, "System\\Library\\Extensions", L_STR_LEN ("System\\Library\\Extensions")) == 0) {
Status = CachelessContextForceKext (Context, Identifier);
} else {
Status = CachelessContextAddKext (
Context,
Kext->PlistData,
Kext->PlistDataSize,
Kext->ImageData,
Kext->ImageDataSize
);
}
} else if (CacheType == CacheTypeMkext) {
Status = MkextInjectKext (
Context,
IsForced ? Identifier : NULL,
IsForced ? BundlePath : FullPath,
Kext->PlistData,
Kext->PlistDataSize,
Kext->ImageData,
Kext->ImageDataSize
);
} else if (CacheType == CacheTypePrelinked) {
Status = PrelinkedInjectKext (
Context,
IsForced ? Identifier : NULL,
IsForced ? BundlePath : FullPath,
Kext->PlistData,
Kext->PlistDataSize,
ExecutablePath,
Kext->ImageData,
Kext->ImageDataSize
);
}
DEBUG ((
EFI_ERROR (Status) ? DEBUG_WARN : DEBUG_INFO,
"OC: %a%a injection %a (%a) - %r\n",
PRINT_KERNEL_CACHE_TYPE (CacheType),
IsForced ? " force" : "",
BundlePath,
Comment,
Status
));
}
STATIC
VOID
OcKernelInjectKexts (
IN OC_GLOBAL_CONFIG *Config,
IN KERNEL_CACHE_TYPE CacheType,
IN VOID *Context,
IN UINT32 DarwinVersion,
IN BOOLEAN Is32Bit,
IN UINT32 LinkedExpansion,
IN UINT32 ReservedExeSize
)
{
EFI_STATUS Status;
UINT32 Index;
if (CacheType == CacheTypePrelinked) {
Status = PrelinkedInjectPrepare (
Context,
LinkedExpansion,
ReservedExeSize
);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_WARN, "OC: Prelink inject prepare error - %r\n", Status));
return;
}
}
//
// Process system kexts to be force injected.
//
for (Index = 0; Index < Config->Kernel.Force.Count; Index++) {
OcKernelInjectKext (
Config->Kernel.Force.Values[Index],
Index,
TRUE,
CacheType,
Context,
DarwinVersion,
Is32Bit
);
}
//
// Process kexts to be injected.
//
for (Index = 0; Index < Config->Kernel.Add.Count; Index++) {
OcKernelInjectKext (
Config->Kernel.Add.Values[Index],
Index,
FALSE,
CacheType,
Context,
DarwinVersion,
Is32Bit
);
}
if (CacheType == CacheTypeCacheless || CacheType == CacheTypeMkext) {
Status = EFI_SUCCESS;
} else if (CacheType == CacheTypePrelinked) {
DEBUG ((
DEBUG_INFO,
"OC: Prelink size %u kext offset %u reserved %u\n",
((PRELINKED_CONTEXT *) Context)->PrelinkedSize,
((PRELINKED_CONTEXT *) Context)->KextsFileOffset,
ReservedExeSize
));
ASSERT (
((PRELINKED_CONTEXT *) Context)->PrelinkedSize -
((PRELINKED_CONTEXT *) Context)->KextsFileOffset <= ReservedExeSize
);
Status = PrelinkedInjectComplete (Context);
}
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_WARN, "OC: %a insertion error - %r\n", PRINT_KERNEL_CACHE_TYPE (CacheType), Status));
}
}
STATIC
EFI_STATUS
OcKernelProcessPrelinked (
IN OC_GLOBAL_CONFIG *Config,
IN UINT32 DarwinVersion,
IN BOOLEAN Is32Bit,
IN OUT UINT8 *Kernel,
IN UINT32 *KernelSize,
IN UINT32 AllocatedSize,
IN UINT32 LinkedExpansion,
IN UINT32 ReservedExeSize
)
{
EFI_STATUS Status;
PRELINKED_CONTEXT Context;
Status = PrelinkedContextInit (&Context, Kernel, *KernelSize, AllocatedSize);
if (!EFI_ERROR (Status)) {
OcKernelInjectKexts (Config, CacheTypePrelinked, &Context, DarwinVersion, Is32Bit, LinkedExpansion, ReservedExeSize);
OcKernelApplyPatches (Config, mOcCpuInfo, DarwinVersion, Is32Bit, CacheTypePrelinked, &Context, NULL, 0);
OcKernelBlockKexts (Config, DarwinVersion, Is32Bit, &Context);
*KernelSize = Context.PrelinkedSize;
PrelinkedContextFree (&Context);
}
return Status;
}
STATIC
EFI_STATUS
OcKernelProcessMkext (
IN OC_GLOBAL_CONFIG *Config,
IN UINT32 DarwinVersion,
IN BOOLEAN Is32Bit,
IN OUT UINT8 *Mkext,
IN OUT UINT32 *MkextSize,
IN UINT32 AllocatedSize
)
{
EFI_STATUS Status;
MKEXT_CONTEXT Context;
Status = MkextContextInit (&Context, Mkext, *MkextSize, AllocatedSize);
if (EFI_ERROR (Status)) {
return Status;
}
OcKernelInjectKexts (Config, CacheTypeMkext, &Context, DarwinVersion, Is32Bit, 0, 0);
OcKernelApplyPatches (Config, mOcCpuInfo, DarwinVersion, Is32Bit, CacheTypeMkext, &Context, NULL, 0);
MkextInjectPatchComplete (&Context);
*MkextSize = Context.MkextSize;
MkextContextFree (&Context);
return Status;
}
STATIC
EFI_STATUS
OcKernelInitCacheless (
IN OC_GLOBAL_CONFIG *Config,
IN CACHELESS_CONTEXT *Context,
IN UINT32 DarwinVersion,
IN BOOLEAN Is32Bit,
IN CHAR16 *FileName,
IN EFI_FILE_PROTOCOL *ExtensionsDir,
OUT EFI_FILE_PROTOCOL **File
)
{
EFI_STATUS Status;
Status = CachelessContextInit (
Context,
FileName,
ExtensionsDir,
DarwinVersion
);
if (EFI_ERROR (Status)) {
return Status;
}
OcKernelInjectKexts (Config, CacheTypeCacheless, Context, DarwinVersion, Is32Bit, 0, 0);
OcKernelApplyPatches (Config, mOcCpuInfo, DarwinVersion, Is32Bit, CacheTypeCacheless, Context, NULL, 0);
return CachelessContextOverlayExtensionsDir (Context, File);
}
STATIC
EFI_STATUS
OcKernelReadAppleKernel (
IN EFI_FILE_PROTOCOL *RootFile,
IN EFI_FILE_PROTOCOL *KernelFile,
IN CHAR16 *FileName,
IN BOOLEAN Is32Bit,
IN OUT UINT32 *DarwinVersion,
OUT UINT8 **Kernel,
OUT UINT32 *KernelSize,
OUT UINT32 *AllocatedSize,
OUT UINT32 *ReservedExeSize,
OUT UINT32 *LinkedExpansion,
OUT UINT8 *Digest OPTIONAL
)
{
EFI_STATUS Status;
BOOLEAN Result;
UINT32 DarwinVersionNew;
BOOLEAN IsKernel32Bit;
UINT32 ReservedInfoSize;
UINT32 NumReservedKexts;
UINT32 ReservedFullSize;
OcKernelLoadKextsAndReserve (
RootFile,
mOcStorage,
mOcConfiguration,
CacheTypePrelinked,
ReservedExeSize,
&ReservedInfoSize,
&NumReservedKexts
);
*LinkedExpansion = KcGetSegmentFixupChainsSize (*ReservedExeSize);
if (*LinkedExpansion == 0) {
return EFI_UNSUPPORTED;
}
Result = OcOverflowTriAddU32 (
ReservedInfoSize,
*ReservedExeSize,
*LinkedExpansion,
&ReservedFullSize
);
if (Result) {
return EFI_UNSUPPORTED;
}
//
// Read last requested architecture for kernel.
//
DEBUG ((DEBUG_INFO, "OC: Trying %a XNU hook on %s\n", Is32Bit ? "32-bit" : "64-bit", FileName));
Status = ReadAppleKernel (
KernelFile,
Is32Bit,
&IsKernel32Bit,
Kernel,
KernelSize,
AllocatedSize,
ReservedFullSize,
Digest
);
DEBUG ((
DEBUG_INFO,
"OC: Result of %a XNU hook on %s (%02X%02X%02X%02X) is %r\n",
IsKernel32Bit ? "32-bit" : "64-bit",
FileName,
Digest != NULL ? Digest[0] : 0,
Digest != NULL ? Digest[1] : 0,
Digest != NULL ? Digest[2] : 0,
Digest != NULL ? Digest[3] : 0,
Status
));
if (!EFI_ERROR (Status)) {
//
// 10.6 and below may keep older prelinkedkernels around, do not load those.
//
DarwinVersionNew = OcKernelReadDarwinVersion (*Kernel, *KernelSize);
if (DarwinVersionNew < *DarwinVersion) {
FreePool (*Kernel);
*Kernel = NULL;
return EFI_INVALID_PARAMETER;
}
//
// If we failed to obtain the requested bitness for the platform, abort.
//
if (Is32Bit != IsKernel32Bit) {
DEBUG ((DEBUG_WARN, "OC: %a kernel architecture is not available, aborting.\n", Is32Bit ? "32-bit" : "64-bit"));
FreePool (*Kernel);
*Kernel = NULL;
return EFI_NOT_FOUND;
}
*DarwinVersion = DarwinVersionNew;
}
return Status;
}
STATIC
EFI_STATUS
OcKernelFuzzyMatch (
IN EFI_FILE_PROTOCOL *RootFile,
IN CHAR16 *FileName,
IN UINT64 OpenMode,
IN UINT64 Attributes,
IN BOOLEAN Is32Bit,
IN OUT UINT32 *DarwinVersion,
OUT EFI_FILE_PROTOCOL **KernelFile,
OUT UINT8 **Kernel,
OUT UINT32 *KernelSize,
OUT UINT32 *AllocatedSize,
OUT UINT32 *ReservedExeSize,
OUT UINT32 *LinkedExpansion,
OUT UINT8 *Digest OPTIONAL
)
{
EFI_STATUS Status;
EFI_FILE_PROTOCOL *FileDirectory;
CHAR16 *FileNameDir;
UINTN FileNameDirLength;
EFI_FILE_INFO *FileInfo;
EFI_FILE_INFO *FileInfoNext;
CHAR16 *FileNameCacheNew;
UINTN FileNameCacheNewLength;
UINTN FileNameCacheNewSize;
DIRECTORY_SEARCH_CONTEXT Context;
FileInfo = NULL;
FileNameCacheNew = NULL;
//
// Open parent directory.
//
FileNameDirLength = OcStriStr (FileName, L"\\kernelcache") - FileName;
FileNameDir = AllocateZeroPool (StrnSizeS (FileName, FileNameDirLength));
if (FileNameDir == NULL) {
return EFI_OUT_OF_RESOURCES;
}
CopyMem (FileNameDir, FileName, StrnSizeS (FileName, FileNameDirLength) - sizeof (*FileName));
Status = SafeFileOpen (RootFile, &FileDirectory, FileNameDir, EFI_FILE_MODE_READ, 0);
if (EFI_ERROR (Status)) {
FreePool (FileNameDir);
return Status;
}
//
// Search for kernelcache files, trying each one.
//
DirectorySeachContextInit (&Context);
do {
Status = GetNewestFileFromDirectory (
&Context,
FileDirectory,
L"kernelcache",