mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
315 lines
8.4 KiB
315 lines
8.4 KiB
/*++
|
|
|
|
Copyright (c) 1992 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
smashlck.c
|
|
|
|
Abstract:
|
|
|
|
This function smashes lock prefixes replacing them with NOPs
|
|
|
|
Author:
|
|
|
|
Mark Lucovsky (markl) 30-Apr-1993
|
|
|
|
Revision History:
|
|
|
|
Ted Miller (tedm) 7-Dec-1993 -- copied from imagehlp, modified for setup.
|
|
|
|
--*/
|
|
|
|
#include "spprecmp.h"
|
|
#pragma hdrstop
|
|
|
|
#define OPCODE_LOCK_PREFIX ((UCHAR)0xf0)
|
|
#define OPCODE_NO_OP ((UCHAR)0x90)
|
|
|
|
typedef struct _LOADED_IMAGE {
|
|
HANDLE hFile;
|
|
HANDLE hSection;
|
|
PUCHAR MappedAddress;
|
|
ULONG FileSize;
|
|
ULONG Characteristics;
|
|
PIMAGE_NT_HEADERS NtHeader;
|
|
PIMAGE_SECTION_HEADER LastRvaSection;
|
|
ULONG NumberOfSections;
|
|
PIMAGE_SECTION_HEADER Sections;
|
|
} LOADED_IMAGE, *PLOADED_IMAGE;
|
|
|
|
|
|
PVOID
|
|
RvaToVa(
|
|
PVOID Rva,
|
|
PLOADED_IMAGE Image
|
|
)
|
|
{
|
|
|
|
PIMAGE_SECTION_HEADER Section;
|
|
ULONG i;
|
|
PVOID Va;
|
|
|
|
Rva = (PVOID)((PUCHAR)Rva-(PUCHAR)Image->NtHeader->OptionalHeader.ImageBase);
|
|
Va = NULL;
|
|
Section = Image->LastRvaSection;
|
|
if ( (ULONG)Rva >= Section->VirtualAddress &&
|
|
(ULONG)Rva < Section->VirtualAddress + Section->SizeOfRawData ) {
|
|
Va = (PVOID)((ULONG)Rva - Section->VirtualAddress + Section->PointerToRawData + Image->MappedAddress);
|
|
}
|
|
else {
|
|
for(Section = Image->Sections,i=0; i<Image->NumberOfSections; i++,Section++) {
|
|
if ( (ULONG)Rva >= Section->VirtualAddress &&
|
|
(ULONG)Rva < Section->VirtualAddress + Section->SizeOfRawData ) {
|
|
Va = (PVOID)((ULONG)Rva - Section->VirtualAddress + Section->PointerToRawData + Image->MappedAddress);
|
|
Image->LastRvaSection = Section;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if ( !Va ) {
|
|
KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_INFO_LEVEL, "SETUP: RvaToVa %lx failed\n",Rva));
|
|
}
|
|
return Va;
|
|
}
|
|
|
|
|
|
BOOLEAN
|
|
pSpLoadForSmash(
|
|
IN PWSTR ImageName, OPTIONAL
|
|
IN HANDLE FileHandle, OPTIONAL
|
|
OUT PLOADED_IMAGE LoadedImage
|
|
)
|
|
{
|
|
NTSTATUS Status;
|
|
PIMAGE_NT_HEADERS NtHeader;
|
|
|
|
//
|
|
// open and map the file.
|
|
// then fill in the loaded image descriptor
|
|
//
|
|
|
|
if(FileHandle) {
|
|
|
|
LoadedImage->hFile = FileHandle;
|
|
|
|
Status = SpGetFileSize(FileHandle,&LoadedImage->FileSize);
|
|
if(NT_SUCCESS(Status)) {
|
|
Status = SpMapEntireFile(
|
|
FileHandle,
|
|
&LoadedImage->hSection,
|
|
&LoadedImage->MappedAddress,
|
|
TRUE
|
|
);
|
|
}
|
|
|
|
} else {
|
|
|
|
ASSERT(ImageName);
|
|
|
|
Status = SpOpenAndMapFile(
|
|
ImageName,
|
|
&LoadedImage->hFile,
|
|
&LoadedImage->hSection,
|
|
&LoadedImage->MappedAddress,
|
|
&LoadedImage->FileSize,
|
|
TRUE
|
|
);
|
|
}
|
|
|
|
if(!NT_SUCCESS(Status)) {
|
|
|
|
KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_ERROR_LEVEL,
|
|
"SETUP: pSpLoadForSmash: open/map %ws failed (%lx)\n",
|
|
ImageName ? ImageName : L"(by handle)",
|
|
Status
|
|
));
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
//
|
|
// Check the image and find nt image headers
|
|
//
|
|
|
|
if((NtHeader = RtlImageNtHeader(LoadedImage->MappedAddress))
|
|
&& NtHeader->FileHeader.SizeOfOptionalHeader)
|
|
{
|
|
LoadedImage->Characteristics = NtHeader->FileHeader.Characteristics;
|
|
LoadedImage->NumberOfSections = NtHeader->FileHeader.NumberOfSections;
|
|
LoadedImage->Sections = (PIMAGE_SECTION_HEADER)((PUCHAR)NtHeader + sizeof(IMAGE_NT_HEADERS));
|
|
LoadedImage->LastRvaSection = LoadedImage->Sections;
|
|
|
|
LoadedImage->NtHeader = NtHeader;
|
|
|
|
} else {
|
|
|
|
KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_ERROR_LEVEL,
|
|
"SETUP: pSpLoadForSmash: %ws is not an NT image\n",
|
|
ImageName ? ImageName : L"(by handle)"
|
|
));
|
|
|
|
SpUnmapFile(LoadedImage->hSection,LoadedImage->MappedAddress);
|
|
ZwClose(LoadedImage->hFile);
|
|
}
|
|
|
|
return (BOOLEAN)(NtHeader != NULL);
|
|
}
|
|
|
|
|
|
VOID
|
|
SpMashemSmashem(
|
|
IN HANDLE FileHandle, OPTIONAL
|
|
IN PWSTR Name1, OPTIONAL
|
|
IN PWSTR Name2, OPTIONAL
|
|
IN PWSTR Name3 OPTIONAL
|
|
)
|
|
{
|
|
PWSTR FullFilename;
|
|
LOADED_IMAGE LoadedImage;
|
|
ULONG whocares;
|
|
PIMAGE_LOAD_CONFIG_DIRECTORY ConfigInfo;
|
|
ULONG CheckSum;
|
|
ULONG HeaderSum;
|
|
BOOLEAN LocksSmashed;
|
|
BOOLEAN b;
|
|
|
|
//
|
|
// Determine whether we really need to smash locks.
|
|
// We need to do this if we are installing for a UP machine.
|
|
//
|
|
if(SpInstallingMp()) {
|
|
return;
|
|
}
|
|
|
|
//
|
|
// Form the full name of the file if a file handle is not specified.
|
|
//
|
|
if(FileHandle) {
|
|
|
|
FullFilename = NULL;
|
|
|
|
} else {
|
|
|
|
ASSERT(Name1);
|
|
|
|
wcscpy((PWSTR)TemporaryBuffer,Name1);
|
|
if(Name2) {
|
|
SpConcatenatePaths((PWSTR)TemporaryBuffer,Name2);
|
|
}
|
|
if(Name3) {
|
|
SpConcatenatePaths((PWSTR)TemporaryBuffer,Name3);
|
|
}
|
|
FullFilename = SpDupStringW((PWSTR)TemporaryBuffer);
|
|
}
|
|
|
|
//
|
|
// Attempt to load and map the image for smashing.
|
|
//
|
|
try {
|
|
|
|
b = pSpLoadForSmash(FullFilename,FileHandle,&LoadedImage);
|
|
|
|
} except(EXCEPTION_EXECUTE_HANDLER) {
|
|
|
|
KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_ERROR_LEVEL,
|
|
"SETUP: Warning: exception while loading %ws for smash\n",
|
|
FullFilename ? FullFilename : L"(by handle)"
|
|
));
|
|
|
|
b = FALSE;
|
|
}
|
|
|
|
if(b) {
|
|
|
|
//
|
|
// make sure the image has correct configuration information,
|
|
// and that the LockPrefixTable is set up properly
|
|
//
|
|
// Put exception handling around this since we haven't yet verified the file
|
|
// and it may be corrupted.
|
|
//
|
|
|
|
try {
|
|
|
|
ConfigInfo = (PIMAGE_LOAD_CONFIG_DIRECTORY)RtlImageDirectoryEntryToData(
|
|
LoadedImage.MappedAddress,
|
|
FALSE,
|
|
IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG,
|
|
&whocares
|
|
);
|
|
|
|
if(ConfigInfo && ConfigInfo->LockPrefixTable) {
|
|
|
|
//
|
|
// Walk through the lock prefix table
|
|
//
|
|
|
|
PUCHAR *LockPrefixs;
|
|
PUCHAR LockPrefix;
|
|
|
|
LockPrefixs = (PUCHAR *)RvaToVa((PVOID)ConfigInfo->LockPrefixTable,&LoadedImage);
|
|
|
|
while(LockPrefixs && *LockPrefixs) {
|
|
|
|
LockPrefix = RvaToVa(*LockPrefixs,&LoadedImage);
|
|
if(LockPrefix && (*LockPrefix == OPCODE_LOCK_PREFIX)) {
|
|
|
|
LocksSmashed = TRUE;
|
|
*LockPrefix = OPCODE_NO_OP;
|
|
}
|
|
|
|
LockPrefixs++;
|
|
}
|
|
|
|
if(LocksSmashed) {
|
|
|
|
//
|
|
// recompute the checksum.
|
|
//
|
|
|
|
LoadedImage.NtHeader->OptionalHeader.CheckSum = 0;
|
|
|
|
SpChecksumMappedFile(
|
|
LoadedImage.MappedAddress,
|
|
LoadedImage.FileSize,
|
|
&HeaderSum,
|
|
&CheckSum
|
|
);
|
|
|
|
LoadedImage.NtHeader->OptionalHeader.CheckSum = CheckSum;
|
|
|
|
//
|
|
// Flush changes.
|
|
//
|
|
SpFlushVirtualMemory(LoadedImage.MappedAddress,0);
|
|
}
|
|
}
|
|
|
|
} except(EXCEPTION_EXECUTE_HANDLER) {
|
|
|
|
KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_ERROR_LEVEL,
|
|
"SETUP: Warning: exception while smashing locks for %ws\n",
|
|
FullFilename ? FullFilename : L"(by handle)"
|
|
));
|
|
|
|
}
|
|
|
|
SpUnmapFile(LoadedImage.hSection,LoadedImage.MappedAddress);
|
|
if(!FileHandle) {
|
|
ZwClose(LoadedImage.hFile);
|
|
}
|
|
|
|
} else {
|
|
//
|
|
// This is not really a fatal problem
|
|
// but we probably ought to alert the user.
|
|
//
|
|
KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_INFO_LEVEL, "SETUP: Failed to smash a lock.\n"));
|
|
|
|
}
|
|
|
|
if(FullFilename) {
|
|
SpMemFree(FullFilename);
|
|
}
|
|
}
|