mirror of
https://github.com/acidanthera/OpenCorePkg.git
synced 2025-12-08 19:25:01 +00:00
711 lines
21 KiB
C
711 lines
21 KiB
C
/** @file
|
|
Copyright (C) 2019, vit9696. All rights reserved.
|
|
|
|
All rights reserved.
|
|
|
|
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 <Base.h>
|
|
|
|
#include <IndustryStandard/AppleKmodInfo.h>
|
|
|
|
#include <Library/BaseLib.h>
|
|
#include <Library/BaseMemoryLib.h>
|
|
#include <Library/DebugLib.h>
|
|
#include <Library/MemoryAllocationLib.h>
|
|
#include <Library/OcAppleKernelLib.h>
|
|
#include <Library/OcMachoLib.h>
|
|
#include <Library/OcStringLib.h>
|
|
|
|
#include "PrelinkedInternal.h"
|
|
|
|
STATIC
|
|
UINT64
|
|
PrelinkedFindLastLoadAddress (
|
|
IN XML_NODE *KextList
|
|
)
|
|
{
|
|
UINT32 KextCount;
|
|
UINT32 KextIndex;
|
|
UINT32 FieldIndex;
|
|
UINT32 FieldCount;
|
|
XML_NODE *LastKext;
|
|
CONST CHAR8 *KextPlistKey;
|
|
XML_NODE *KextPlistValue;
|
|
UINT64 LoadAddress;
|
|
UINT64 LoadSize;
|
|
|
|
KextCount = XmlNodeChildren (KextList);
|
|
if (KextCount == 0) {
|
|
return 0;
|
|
}
|
|
|
|
//
|
|
// Here we make an assumption that last kext has the highest load address,
|
|
// yet there might be an arbitrary amount of trailing executable-less kexts.
|
|
//
|
|
for (KextIndex = 1; KextIndex <= KextCount; ++KextIndex) {
|
|
LastKext = PlistNodeCast (XmlNodeChild (KextList, KextCount - KextIndex), PLIST_NODE_TYPE_DICT);
|
|
if (LastKext == NULL) {
|
|
return 0;
|
|
}
|
|
|
|
LoadAddress = 0;
|
|
LoadSize = 0;
|
|
|
|
FieldCount = PlistDictChildren (LastKext);
|
|
for (FieldIndex = 0; FieldIndex < FieldCount; ++FieldIndex) {
|
|
KextPlistKey = PlistKeyValue (PlistDictChild (LastKext, FieldIndex, &KextPlistValue));
|
|
if (KextPlistKey == NULL) {
|
|
continue;
|
|
}
|
|
|
|
if (LoadAddress == 0 && AsciiStrCmp (KextPlistKey, PRELINK_INFO_EXECUTABLE_LOAD_ADDR_KEY) == 0) {
|
|
if (!PlistIntegerValue (KextPlistValue, &LoadAddress, sizeof (LoadAddress), TRUE)) {
|
|
return 0;
|
|
}
|
|
} else if (LoadSize == 0 && AsciiStrCmp (KextPlistKey, PRELINK_INFO_EXECUTABLE_SIZE_KEY) == 0) {
|
|
if (!PlistIntegerValue (KextPlistValue, &LoadSize, sizeof (LoadSize), TRUE)) {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (LoadSize != 0 && LoadAddress != 0) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (OcOverflowAddU64 (LoadAddress, LoadSize, &LoadAddress)) {
|
|
return 0;
|
|
}
|
|
|
|
if (LoadAddress != 0) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return LoadAddress;
|
|
}
|
|
|
|
STATIC
|
|
BOOLEAN
|
|
PrelinkedFindKmodAddress (
|
|
IN OC_MACHO_CONTEXT *ExecutableContext,
|
|
IN UINT64 LoadAddress,
|
|
IN UINT32 Size,
|
|
OUT UINT64 *Kmod
|
|
)
|
|
{
|
|
MACH_NLIST_64 *Symbol;
|
|
CONST CHAR8 *SymbolName;
|
|
MACH_SEGMENT_COMMAND_64 *TextSegment;
|
|
UINT64 Address;
|
|
UINT32 Index;
|
|
|
|
Index = 0;
|
|
while (TRUE) {
|
|
Symbol = MachoGetSymbolByIndex64 (ExecutableContext, Index);
|
|
if (Symbol == NULL) {
|
|
*Kmod = 0;
|
|
return TRUE;
|
|
}
|
|
|
|
if ((Symbol->Type & MACH_N_TYPE_STAB) == 0) {
|
|
SymbolName = MachoGetSymbolName64 (ExecutableContext, Symbol);
|
|
if (SymbolName && AsciiStrCmp (SymbolName, "_kmod_info") == 0) {
|
|
if (!MachoIsSymbolValueInRange64 (ExecutableContext, Symbol)) {
|
|
return FALSE;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
Index++;
|
|
}
|
|
|
|
TextSegment = MachoGetSegmentByName64 (ExecutableContext, "__TEXT");
|
|
if (TextSegment == NULL || TextSegment->FileOffset > TextSegment->VirtualAddress) {
|
|
return FALSE;
|
|
}
|
|
|
|
Address = TextSegment->VirtualAddress - TextSegment->FileOffset;
|
|
if (OcOverflowTriAddU64 (Address, LoadAddress, Symbol->Value, &Address)
|
|
|| Address > LoadAddress + Size - sizeof (KMOD_INFO_64_V1)) {
|
|
return FALSE;
|
|
}
|
|
|
|
*Kmod = Address;
|
|
return TRUE;
|
|
}
|
|
|
|
EFI_STATUS
|
|
PrelinkedContextInit (
|
|
IN OUT PRELINKED_CONTEXT *Context,
|
|
IN OUT UINT8 *Prelinked,
|
|
IN UINT32 PrelinkedSize,
|
|
IN UINT32 PrelinkedAllocSize
|
|
)
|
|
{
|
|
XML_NODE *PrelinkedInfoRoot;
|
|
CONST CHAR8 *PrelinkedInfoRootKey;
|
|
UINT32 PrelinkedInfoRootIndex;
|
|
UINT32 PrelinkedInfoRootCount;
|
|
|
|
ASSERT (Context != NULL);
|
|
ASSERT (Prelinked != NULL);
|
|
ASSERT (PrelinkedSize > 0);
|
|
ASSERT (PrelinkedAllocSize >= PrelinkedSize);
|
|
|
|
ZeroMem (Context, sizeof (*Context));
|
|
|
|
Context->Prelinked = Prelinked;
|
|
Context->PrelinkedSize = MACHO_ALIGN (PrelinkedSize);
|
|
Context->PrelinkedAllocSize = PrelinkedAllocSize;
|
|
|
|
//
|
|
// Initialize kext list with kernel pseudo kext.
|
|
//
|
|
InitializeListHead (&Context->PrelinkedKexts);
|
|
if (InternalCachedPrelinkedKernel (Context) == NULL) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
//
|
|
// Ensure that PrelinkedSize is always aligned.
|
|
//
|
|
if (Context->PrelinkedSize != PrelinkedSize) {
|
|
if (Context->PrelinkedSize > PrelinkedAllocSize) {
|
|
return EFI_BUFFER_TOO_SMALL;
|
|
}
|
|
|
|
ZeroMem (&Prelinked[PrelinkedSize], Context->PrelinkedSize - PrelinkedSize);
|
|
}
|
|
|
|
if (!MachoInitializeContext (&Context->PrelinkedMachContext, Prelinked, PrelinkedSize)) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
Context->PrelinkedLastAddress = MACHO_ALIGN (MachoGetLastAddress64 (&Context->PrelinkedMachContext));
|
|
if (Context->PrelinkedLastAddress == 0) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
Context->PrelinkedInfoSegment = MachoGetSegmentByName64 (
|
|
&Context->PrelinkedMachContext,
|
|
PRELINK_INFO_SEGMENT
|
|
);
|
|
if (Context->PrelinkedInfoSegment == NULL) {
|
|
return EFI_NOT_FOUND;
|
|
}
|
|
if (Context->PrelinkedInfoSegment->FileOffset > MAX_UINT32) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
Context->PrelinkedInfoSection = MachoGetSectionByName64 (
|
|
&Context->PrelinkedMachContext,
|
|
Context->PrelinkedInfoSegment,
|
|
PRELINK_INFO_SECTION
|
|
);
|
|
if (Context->PrelinkedInfoSection == NULL) {
|
|
return EFI_NOT_FOUND;
|
|
}
|
|
if (Context->PrelinkedInfoSection->Size > MAX_UINT32) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
Context->PrelinkedTextSegment = MachoGetSegmentByName64 (
|
|
&Context->PrelinkedMachContext,
|
|
PRELINK_TEXT_SEGMENT
|
|
);
|
|
if (Context->PrelinkedTextSegment == NULL) {
|
|
return EFI_NOT_FOUND;
|
|
}
|
|
|
|
Context->PrelinkedTextSection = MachoGetSectionByName64 (
|
|
&Context->PrelinkedMachContext,
|
|
Context->PrelinkedTextSegment,
|
|
PRELINK_TEXT_SECTION
|
|
);
|
|
if (Context->PrelinkedTextSection == NULL) {
|
|
return EFI_NOT_FOUND;
|
|
}
|
|
|
|
Context->PrelinkedInfo = AllocateCopyPool (
|
|
(UINTN)Context->PrelinkedInfoSection->Size,
|
|
&Context->Prelinked[Context->PrelinkedInfoSection->Offset]
|
|
);
|
|
if (Context->PrelinkedInfo == NULL) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
|
|
Context->PrelinkedInfoDocument = XmlDocumentParse (Context->PrelinkedInfo, (UINT32)Context->PrelinkedInfoSection->Size, TRUE);
|
|
if (Context->PrelinkedInfoDocument == NULL) {
|
|
PrelinkedContextFree (Context);
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
PrelinkedInfoRoot = PlistNodeCast (XmlDocumentRoot (Context->PrelinkedInfoDocument), PLIST_NODE_TYPE_DICT);
|
|
if (PrelinkedInfoRoot == NULL) {
|
|
PrelinkedContextFree (Context);
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
PrelinkedInfoRootCount = PlistDictChildren (PrelinkedInfoRoot);
|
|
for (PrelinkedInfoRootIndex = 0; PrelinkedInfoRootIndex < PrelinkedInfoRootCount; ++PrelinkedInfoRootIndex) {
|
|
PrelinkedInfoRootKey = PlistKeyValue (PlistDictChild (PrelinkedInfoRoot, PrelinkedInfoRootIndex, &Context->KextList));
|
|
if (PrelinkedInfoRootKey == NULL) {
|
|
continue;
|
|
}
|
|
|
|
if (AsciiStrCmp (PrelinkedInfoRootKey, PRELINK_INFO_DICTIONARY_KEY) == 0) {
|
|
if (PlistNodeCast (Context->KextList, PLIST_NODE_TYPE_ARRAY) != NULL) {
|
|
Context->PrelinkedLastLoadAddress = PrelinkedFindLastLoadAddress (Context->KextList);
|
|
if (Context->PrelinkedLastLoadAddress != 0) {
|
|
return EFI_SUCCESS;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
PrelinkedContextFree (Context);
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
VOID
|
|
PrelinkedContextFree (
|
|
IN OUT PRELINKED_CONTEXT *Context
|
|
)
|
|
{
|
|
UINT32 Index;
|
|
LIST_ENTRY *Link;
|
|
PRELINKED_KEXT *Kext;
|
|
|
|
if (Context->PrelinkedInfoDocument != NULL) {
|
|
XmlDocumentFree (Context->PrelinkedInfoDocument);
|
|
Context->PrelinkedInfoDocument = NULL;
|
|
}
|
|
|
|
if (Context->PrelinkedInfo != NULL) {
|
|
FreePool (Context->PrelinkedInfo);
|
|
Context->PrelinkedInfo = NULL;
|
|
}
|
|
|
|
if (Context->PooledBuffers != NULL) {
|
|
for (Index = 0; Index < Context->PooledBuffersCount; ++Index) {
|
|
FreePool (Context->PooledBuffers[Index]);
|
|
}
|
|
FreePool (Context->PooledBuffers);
|
|
Context->PooledBuffers = NULL;
|
|
}
|
|
|
|
if (Context->LinkBuffer != NULL) {
|
|
ZeroMem (Context->LinkBuffer, Context->LinkBufferSize);
|
|
FreePool (Context->LinkBuffer);
|
|
Context->LinkBuffer = NULL;
|
|
}
|
|
|
|
while (!IsListEmpty (&Context->PrelinkedKexts)) {
|
|
Link = GetFirstNode (&Context->PrelinkedKexts);
|
|
Kext = GET_PRELINKED_KEXT_FROM_LINK (Link);
|
|
RemoveEntryList (Link);
|
|
InternalFreePrelinkedKext (Kext);
|
|
}
|
|
|
|
ZeroMem (&Context->PrelinkedKexts, sizeof (Context->PrelinkedKexts));
|
|
}
|
|
|
|
EFI_STATUS
|
|
PrelinkedDependencyInsert (
|
|
IN OUT PRELINKED_CONTEXT *Context,
|
|
IN VOID *Buffer
|
|
)
|
|
{
|
|
VOID **NewPooledBuffers;
|
|
|
|
if (Context->PooledBuffersCount == Context->PooledBuffersAllocCount) {
|
|
NewPooledBuffers = AllocatePool (
|
|
2 * (Context->PooledBuffersAllocCount + 1) * sizeof (NewPooledBuffers[0])
|
|
);
|
|
if (NewPooledBuffers == NULL) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
if (Context->PooledBuffers != NULL) {
|
|
CopyMem (
|
|
&NewPooledBuffers[0],
|
|
&Context->PooledBuffers[0],
|
|
Context->PooledBuffersCount * sizeof (NewPooledBuffers[0])
|
|
);
|
|
FreePool (Context->PooledBuffers);
|
|
}
|
|
Context->PooledBuffers = NewPooledBuffers;
|
|
Context->PooledBuffersAllocCount = 2 * (Context->PooledBuffersAllocCount + 1);
|
|
}
|
|
|
|
Context->PooledBuffers[Context->PooledBuffersCount] = Buffer;
|
|
Context->PooledBuffersCount++;
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
EFI_STATUS
|
|
PrelinkedInjectPrepare (
|
|
IN OUT PRELINKED_CONTEXT *Context
|
|
)
|
|
{
|
|
UINT64 SegmentEndOffset;
|
|
|
|
//
|
|
// Plist info is normally the last segment, so we may potentially save
|
|
// some data by removing it and then appending new kexts over.
|
|
//
|
|
|
|
SegmentEndOffset = Context->PrelinkedInfoSegment->FileOffset + Context->PrelinkedInfoSegment->FileSize;
|
|
|
|
if (MACHO_ALIGN (SegmentEndOffset) == Context->PrelinkedSize) {
|
|
Context->PrelinkedSize = (UINT32) MACHO_ALIGN (Context->PrelinkedInfoSegment->FileOffset);
|
|
}
|
|
|
|
Context->PrelinkedInfoSegment->VirtualAddress = 0;
|
|
Context->PrelinkedInfoSegment->Size = 0;
|
|
Context->PrelinkedInfoSegment->FileOffset = 0;
|
|
Context->PrelinkedInfoSegment->FileSize = 0;
|
|
Context->PrelinkedInfoSection->Address = 0;
|
|
Context->PrelinkedInfoSection->Size = 0;
|
|
Context->PrelinkedInfoSection->Offset = 0;
|
|
|
|
Context->PrelinkedLastAddress = MACHO_ALIGN (MachoGetLastAddress64 (&Context->PrelinkedMachContext));
|
|
if (Context->PrelinkedLastAddress == 0) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
//
|
|
// Prior to plist there usually is prelinked text.
|
|
//
|
|
|
|
SegmentEndOffset = Context->PrelinkedTextSegment->FileOffset + Context->PrelinkedTextSegment->FileSize;
|
|
|
|
if (MACHO_ALIGN (SegmentEndOffset) != Context->PrelinkedSize) {
|
|
//
|
|
// TODO: Implement prelinked text relocation when it is not preceding prelinked info
|
|
// and is not in the end of prelinked info.
|
|
//
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
EFI_STATUS
|
|
PrelinkedInjectComplete (
|
|
IN OUT PRELINKED_CONTEXT *Context
|
|
)
|
|
{
|
|
CHAR8 *ExportedInfo;
|
|
UINT32 ExportedInfoSize;
|
|
UINT32 NewSize;
|
|
|
|
ExportedInfo = XmlDocumentExport (Context->PrelinkedInfoDocument, &ExportedInfoSize, 0);
|
|
if (ExportedInfo == NULL) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
|
|
//
|
|
// Include \0 terminator.
|
|
//
|
|
ExportedInfoSize++;
|
|
|
|
if (OcOverflowAddU32 (Context->PrelinkedSize, MACHO_ALIGN (ExportedInfoSize), &NewSize)
|
|
|| NewSize > Context->PrelinkedAllocSize) {
|
|
FreePool (ExportedInfo);
|
|
return EFI_BUFFER_TOO_SMALL;
|
|
}
|
|
|
|
Context->PrelinkedInfoSegment->VirtualAddress = Context->PrelinkedLastAddress;
|
|
Context->PrelinkedInfoSegment->Size = ExportedInfoSize;
|
|
Context->PrelinkedInfoSegment->FileOffset = Context->PrelinkedSize;
|
|
Context->PrelinkedInfoSegment->FileSize = ExportedInfoSize;
|
|
Context->PrelinkedInfoSection->Address = Context->PrelinkedLastAddress;
|
|
Context->PrelinkedInfoSection->Size = ExportedInfoSize;
|
|
Context->PrelinkedInfoSection->Offset = Context->PrelinkedSize;
|
|
|
|
CopyMem (
|
|
&Context->Prelinked[Context->PrelinkedSize],
|
|
ExportedInfo,
|
|
ExportedInfoSize
|
|
);
|
|
|
|
ZeroMem (
|
|
&Context->Prelinked[Context->PrelinkedSize + ExportedInfoSize],
|
|
MACHO_ALIGN (ExportedInfoSize) - ExportedInfoSize
|
|
);
|
|
|
|
Context->PrelinkedLastAddress += MACHO_ALIGN (ExportedInfoSize);
|
|
Context->PrelinkedSize += MACHO_ALIGN (ExportedInfoSize);
|
|
|
|
FreePool (ExportedInfo);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
EFI_STATUS
|
|
PrelinkedReserveKextSize (
|
|
IN OUT UINT32 *ReservedSize,
|
|
IN UINT32 InfoPlistSize,
|
|
IN UINT8 *Executable,
|
|
IN UINT32 ExecutableSize OPTIONAL
|
|
)
|
|
{
|
|
OC_MACHO_CONTEXT Context;
|
|
|
|
//
|
|
// For new fields.
|
|
//
|
|
if (OcOverflowAddU32 (InfoPlistSize, 512, &InfoPlistSize)) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
InfoPlistSize = MACHO_ALIGN (InfoPlistSize);
|
|
|
|
if (Executable != NULL) {
|
|
ASSERT (ExecutableSize > 0);
|
|
if (!MachoInitializeContext (&Context, Executable, ExecutableSize)) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
ExecutableSize = MachoGetVmSize64 (&Context);
|
|
if (ExecutableSize == 0) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
}
|
|
|
|
if (OcOverflowTriAddU32 (*ReservedSize, InfoPlistSize, ExecutableSize, &ExecutableSize)) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
*ReservedSize = ExecutableSize;
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
EFI_STATUS
|
|
PrelinkedInjectKext (
|
|
IN OUT PRELINKED_CONTEXT *Context,
|
|
IN CONST CHAR8 *BundlePath,
|
|
IN CONST CHAR8 *InfoPlist,
|
|
IN UINT32 InfoPlistSize,
|
|
IN CONST CHAR8 *ExecutablePath OPTIONAL,
|
|
IN CONST UINT8 *Executable OPTIONAL,
|
|
IN UINT32 ExecutableSize OPTIONAL
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
BOOLEAN Result;
|
|
|
|
XML_DOCUMENT *InfoPlistDocument;
|
|
XML_NODE *InfoPlistRoot;
|
|
CHAR8 *TmpInfoPlist;
|
|
CHAR8 *NewInfoPlist;
|
|
OC_MACHO_CONTEXT ExecutableContext;
|
|
CONST CHAR8 *TmpKeyValue;
|
|
UINT32 FieldCount;
|
|
UINT32 FieldIndex;
|
|
UINT32 NewInfoPlistSize;
|
|
UINT32 NewPrelinkedSize;
|
|
UINT32 AlignedExecutableSize;
|
|
BOOLEAN Failed;
|
|
UINT64 KmodAddress;
|
|
PRELINKED_KEXT *PrelinkedKext;
|
|
CHAR8 ExecutableSourceAddrStr[24];
|
|
CHAR8 ExecutableSizeStr[24];
|
|
CHAR8 ExecutableLoadAddrStr[24];
|
|
CHAR8 KmodInfoStr[24];
|
|
|
|
PrelinkedKext = NULL;
|
|
|
|
ASSERT (InfoPlistSize > 0);
|
|
|
|
//
|
|
// Copy executable to prelinkedkernel.
|
|
//
|
|
if (Executable != NULL) {
|
|
ASSERT (ExecutableSize > 0);
|
|
if (!MachoInitializeContext (&ExecutableContext, (UINT8 *)Executable, ExecutableSize)) {
|
|
DEBUG ((DEBUG_INFO, "OCK: Injected kext %a/%a is not a supported executable\n", BundlePath, ExecutablePath));
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
ExecutableSize = MachoExpandImage64 (
|
|
&ExecutableContext,
|
|
&Context->Prelinked[Context->PrelinkedSize],
|
|
Context->PrelinkedAllocSize - Context->PrelinkedSize,
|
|
TRUE
|
|
);
|
|
|
|
AlignedExecutableSize = MACHO_ALIGN (ExecutableSize);
|
|
|
|
if (OcOverflowAddU32 (Context->PrelinkedSize, AlignedExecutableSize, &NewPrelinkedSize)
|
|
|| NewPrelinkedSize > Context->PrelinkedAllocSize
|
|
|| ExecutableSize == 0) {
|
|
return EFI_BUFFER_TOO_SMALL;
|
|
}
|
|
|
|
ZeroMem (
|
|
&Context->Prelinked[Context->PrelinkedSize + ExecutableSize],
|
|
AlignedExecutableSize - ExecutableSize
|
|
);
|
|
|
|
if (!MachoInitializeContext (&ExecutableContext, &Context->Prelinked[Context->PrelinkedSize], ExecutableSize)) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
Result = PrelinkedFindKmodAddress (&ExecutableContext, Context->PrelinkedLastLoadAddress, ExecutableSize, &KmodAddress);
|
|
if (!Result) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Allocate Info.plist copy for XML_DOCUMENT.
|
|
//
|
|
TmpInfoPlist = AllocateCopyPool (InfoPlistSize, InfoPlist);
|
|
if (TmpInfoPlist == NULL) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
|
|
InfoPlistDocument = XmlDocumentParse (TmpInfoPlist, InfoPlistSize, FALSE);
|
|
if (InfoPlistDocument == NULL) {
|
|
FreePool (TmpInfoPlist);
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
InfoPlistRoot = PlistNodeCast (PlistDocumentRoot (InfoPlistDocument), PLIST_NODE_TYPE_DICT);
|
|
if (InfoPlistRoot == NULL) {
|
|
XmlDocumentFree (InfoPlistDocument);
|
|
FreePool (TmpInfoPlist);
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
//
|
|
// We are not supposed to check for this, it is XNU responsibility, which reliably panics.
|
|
// However, to avoid certain users making this kind of mistake, we still provide some
|
|
// code in debug mode to diagnose it.
|
|
//
|
|
DEBUG_CODE_BEGIN ();
|
|
if (Executable == NULL) {
|
|
FieldCount = PlistDictChildren (InfoPlistRoot);
|
|
for (FieldIndex = 0; FieldIndex < FieldCount; ++FieldIndex) {
|
|
TmpKeyValue = PlistKeyValue (PlistDictChild (InfoPlistRoot, FieldIndex, NULL));
|
|
if (TmpKeyValue == NULL) {
|
|
continue;
|
|
}
|
|
|
|
if (AsciiStrCmp (TmpKeyValue, INFO_BUNDLE_EXECUTABLE_KEY) == 0) {
|
|
DEBUG ((DEBUG_ERROR, "OCK: Plist-only kext has %a key\n", INFO_BUNDLE_EXECUTABLE_KEY));
|
|
ASSERT (FALSE);
|
|
CpuDeadLoop ();
|
|
}
|
|
}
|
|
}
|
|
DEBUG_CODE_END ();
|
|
|
|
Failed = FALSE;
|
|
Failed |= XmlNodeAppend (InfoPlistRoot, "key", NULL, PRELINK_INFO_BUNDLE_PATH_KEY) == NULL;
|
|
Failed |= XmlNodeAppend (InfoPlistRoot, "string", NULL, BundlePath) == NULL;
|
|
if (Executable != NULL) {
|
|
Failed |= XmlNodeAppend (InfoPlistRoot, "key", NULL, PRELINK_INFO_EXECUTABLE_RELATIVE_PATH_KEY) == NULL;
|
|
Failed |= XmlNodeAppend (InfoPlistRoot, "string", NULL, ExecutablePath) == NULL;
|
|
Failed |= !AsciiUint64ToLowerHex (ExecutableSourceAddrStr, sizeof (ExecutableSourceAddrStr), Context->PrelinkedLastAddress);
|
|
Failed |= XmlNodeAppend (InfoPlistRoot, "key", NULL, PRELINK_INFO_EXECUTABLE_SOURCE_ADDR_KEY) == NULL;
|
|
Failed |= XmlNodeAppend (InfoPlistRoot, "integer", PRELINK_INFO_INTEGER_ATTRIBUTES, ExecutableSourceAddrStr) == NULL;
|
|
Failed |= !AsciiUint64ToLowerHex (ExecutableLoadAddrStr, sizeof (ExecutableLoadAddrStr), Context->PrelinkedLastLoadAddress);
|
|
Failed |= XmlNodeAppend (InfoPlistRoot, "key", NULL, PRELINK_INFO_EXECUTABLE_LOAD_ADDR_KEY) == NULL;
|
|
Failed |= XmlNodeAppend (InfoPlistRoot, "integer", PRELINK_INFO_INTEGER_ATTRIBUTES, ExecutableLoadAddrStr) == NULL;
|
|
Failed |= !AsciiUint64ToLowerHex (ExecutableSizeStr, sizeof (ExecutableSizeStr), AlignedExecutableSize);
|
|
Failed |= XmlNodeAppend (InfoPlistRoot, "key", NULL, PRELINK_INFO_EXECUTABLE_SIZE_KEY) == NULL;
|
|
Failed |= XmlNodeAppend (InfoPlistRoot, "integer", PRELINK_INFO_INTEGER_ATTRIBUTES, ExecutableSizeStr) == NULL;
|
|
Failed |= !AsciiUint64ToLowerHex (KmodInfoStr, sizeof (KmodInfoStr), KmodAddress);
|
|
Failed |= XmlNodeAppend (InfoPlistRoot, "key", NULL, PRELINK_INFO_KMOD_INFO_KEY) == NULL;
|
|
Failed |= XmlNodeAppend (InfoPlistRoot, "integer", PRELINK_INFO_INTEGER_ATTRIBUTES, KmodInfoStr) == NULL;
|
|
}
|
|
|
|
if (Failed) {
|
|
XmlDocumentFree (InfoPlistDocument);
|
|
FreePool (TmpInfoPlist);
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
|
|
if (Executable != NULL) {
|
|
PrelinkedKext = InternalLinkPrelinkedKext (
|
|
Context,
|
|
&ExecutableContext,
|
|
InfoPlistRoot,
|
|
Context->PrelinkedLastLoadAddress,
|
|
KmodAddress
|
|
);
|
|
|
|
if (PrelinkedKext == NULL) {
|
|
XmlDocumentFree (InfoPlistDocument);
|
|
FreePool (TmpInfoPlist);
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
//
|
|
// XNU assumes that load size and source size are same, so we should append
|
|
// whatever is bigger to all sizes.
|
|
//
|
|
Context->PrelinkedSize += AlignedExecutableSize;
|
|
Context->PrelinkedLastAddress += AlignedExecutableSize;
|
|
Context->PrelinkedLastLoadAddress += AlignedExecutableSize;
|
|
Context->PrelinkedTextSegment->Size += AlignedExecutableSize;
|
|
Context->PrelinkedTextSegment->FileSize += AlignedExecutableSize;
|
|
Context->PrelinkedTextSection->Size += AlignedExecutableSize;
|
|
}
|
|
|
|
//
|
|
// Strip outer plist & dict.
|
|
//
|
|
NewInfoPlist = XmlDocumentExport (InfoPlistDocument, &NewInfoPlistSize, 2);
|
|
|
|
XmlDocumentFree (InfoPlistDocument);
|
|
FreePool (TmpInfoPlist);
|
|
|
|
if (NewInfoPlist == NULL) {
|
|
if (PrelinkedKext != NULL) {
|
|
InternalFreePrelinkedKext (PrelinkedKext);
|
|
}
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
|
|
Status = PrelinkedDependencyInsert (Context, NewInfoPlist);
|
|
if (EFI_ERROR (Status)) {
|
|
FreePool (NewInfoPlist);
|
|
if (PrelinkedKext != NULL) {
|
|
InternalFreePrelinkedKext (PrelinkedKext);
|
|
}
|
|
return Status;
|
|
}
|
|
|
|
if (XmlNodeAppend (Context->KextList, "dict", NULL, NewInfoPlist) == NULL) {
|
|
if (PrelinkedKext != NULL) {
|
|
InternalFreePrelinkedKext (PrelinkedKext);
|
|
}
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
|
|
//
|
|
// Let other kexts depend on this one.
|
|
//
|
|
if (PrelinkedKext != NULL) {
|
|
InsertTailList (&Context->PrelinkedKexts, &PrelinkedKext->Link);
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|