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8272 lines
310 KiB
8272 lines
310 KiB
/*++
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Copyright (c) 1990 Microsoft Corporation
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Module Name:
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fileopcr.c
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Abstract:
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This module implements File open and Create APIs for Win32
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Author:
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Mark Lucovsky (markl) 25-Sep-1990
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Revision History:
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--*/
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#include "basedll.h"
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#include "mountmgr.h"
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#include "aclapi.h"
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#include "winefs.h"
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WCHAR BasepDataAttributeType[] = DATA_ATTRIBUTE_NAME;
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typedef BOOL (WINAPI *ENCRYPTFILEWPTR)(LPCWSTR);
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typedef BOOL (WINAPI *DECRYPTFILEWPTR)(LPCWSTR, DWORD);
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extern const WCHAR AdvapiDllString[] = L"advapi32.dll";
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#define BASE_OF_SHARE_MASK 0x00000070
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#define TWO56K ( 256 * 1024 )
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ULONG
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BasepOfShareToWin32Share(
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IN ULONG OfShare
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)
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{
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DWORD ShareMode;
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if ( (OfShare & BASE_OF_SHARE_MASK) == OF_SHARE_DENY_READ ) {
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ShareMode = FILE_SHARE_WRITE;
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}
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else if ( (OfShare & BASE_OF_SHARE_MASK) == OF_SHARE_DENY_WRITE ) {
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ShareMode = FILE_SHARE_READ;
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}
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else if ( (OfShare & BASE_OF_SHARE_MASK) == OF_SHARE_DENY_NONE ) {
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ShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE;
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}
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else if ( (OfShare & BASE_OF_SHARE_MASK) == OF_SHARE_EXCLUSIVE ) {
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ShareMode = 0;
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}
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else {
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ShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE;;
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}
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return ShareMode;
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}
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typedef DWORD (WINAPI DUPLICATEENCRYPTIONINFOFILE)(
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IN LPCWSTR SrcFileName,
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IN LPCWSTR DstFileName,
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IN DWORD dwCreationDistribution,
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IN DWORD dwAttributes,
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IN LPSECURITY_ATTRIBUTES lpSecurityAttributes
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);
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DUPLICATEENCRYPTIONINFOFILE LoadDuplicateEncryptionInfoFile;
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DUPLICATEENCRYPTIONINFOFILE *pfnDuplicateEncryptionInfoFile = LoadDuplicateEncryptionInfoFile;
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DWORD
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WINAPI
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LoadDuplicateEncryptionInfoFile(
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IN LPCWSTR SrcFileName,
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IN LPCWSTR DstFileName,
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IN DWORD dwCreationDistribution,
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IN DWORD dwAttributes,
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IN LPSECURITY_ATTRIBUTES lpSecurityAttributes
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)
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{
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DUPLICATEENCRYPTIONINFOFILE *pfnTemp;
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HANDLE Advapi32 = NULL;
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BOOL ReturnSuccess = FALSE;
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DWORD ErrorReturn = 0;
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Advapi32 = LoadLibraryW( AdvapiDllString );
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if( Advapi32 == NULL ) {
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return GetLastError();
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}
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pfnTemp = (DUPLICATEENCRYPTIONINFOFILE*)
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GetProcAddress( Advapi32, "DuplicateEncryptionInfoFile" );
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if( pfnTemp == NULL ) {
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return GetLastError();
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}
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pfnDuplicateEncryptionInfoFile = pfnTemp;
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return pfnDuplicateEncryptionInfoFile( SrcFileName,
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DstFileName,
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dwCreationDistribution,
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dwAttributes,
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lpSecurityAttributes );
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}
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PCUNICODE_STRING
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BaseIsThisAConsoleName(
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PCUNICODE_STRING FileNameString,
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DWORD dwDesiredAccess
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)
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{
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PCUNICODE_STRING FoundConsoleName;
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ULONG DeviceNameLength;
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ULONG DeviceNameOffset;
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UNICODE_STRING ConString;
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WCHAR sch,ech;
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FoundConsoleName = NULL;
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if ( FileNameString->Length ) {
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sch = FileNameString->Buffer[0];
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ech = FileNameString->Buffer[(FileNameString->Length-1)>>1];
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//
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// if CON, CONOUT$, CONIN$, \\.\CON...
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//
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//
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if ( sch == (WCHAR)'c' || sch == (WCHAR)'C' || sch == (WCHAR)'\\' ||
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ech == (WCHAR)'n' || ech == (WCHAR)'N' || ech == (WCHAR)':' || ech == (WCHAR)'$' ) {
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ConString = *FileNameString;
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DeviceNameLength = RtlIsDosDeviceName_U(ConString.Buffer);
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if ( DeviceNameLength ) {
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DeviceNameOffset = DeviceNameLength >> 16;
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DeviceNameLength &= 0x0000ffff;
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ConString.Buffer = (PWSTR)((PSZ)ConString.Buffer + DeviceNameOffset);
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ConString.Length = (USHORT)DeviceNameLength;
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ConString.MaximumLength = (USHORT)(DeviceNameLength + sizeof(UNICODE_NULL));
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}
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FoundConsoleName = NULL;
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try {
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if (RtlEqualUnicodeString(&ConString,&BaseConsoleInput,TRUE) ) {
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FoundConsoleName = &BaseConsoleInput;
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}
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else if (RtlEqualUnicodeString(&ConString,&BaseConsoleOutput,TRUE) ) {
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FoundConsoleName = &BaseConsoleOutput;
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}
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else if (RtlEqualUnicodeString(&ConString,&BaseConsoleGeneric,TRUE) ) {
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if ((dwDesiredAccess & (GENERIC_READ|GENERIC_WRITE)) == GENERIC_READ) {
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FoundConsoleName = &BaseConsoleInput;
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}
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else if ((dwDesiredAccess & (GENERIC_READ|GENERIC_WRITE)) == GENERIC_WRITE){
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FoundConsoleName = &BaseConsoleOutput;
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}
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}
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}
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except (EXCEPTION_EXECUTE_HANDLER) {
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return NULL;
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}
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}
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}
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return FoundConsoleName;
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}
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DWORD
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WINAPI
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CopyReparsePoint(
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HANDLE hSourceFile,
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HANDLE hDestinationFile
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)
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/*++
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Routine Description:
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This is an internal routine that copies a reparse point.
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Arguments:
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hSourceFile - Provides a handle to the source file.
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hDestinationFile - Provides a handle to the destination file.
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Return Value:
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TRUE - The operation was successful.
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FALSE - The operation failed. Extended error status is available
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using GetLastError.
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--*/
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{
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NTSTATUS Status;
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IO_STATUS_BLOCK IoStatusBlock;
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PUCHAR ReparseBuffer;
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PREPARSE_DATA_BUFFER ReparseBufferHeader;
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//
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// Allocate the buffer to set the reparse point.
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//
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ReparseBuffer = RtlAllocateHeap( RtlProcessHeap(), MAKE_TAG( TMP_TAG ), MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
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if ( ReparseBuffer == NULL ) {
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BaseSetLastNTError(STATUS_NO_MEMORY);
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return FALSE;
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}
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//
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// Get the reparse point.
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//
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Status = NtFsControlFile(
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hSourceFile,
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NULL,
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NULL,
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NULL,
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&IoStatusBlock,
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FSCTL_GET_REPARSE_POINT,
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NULL, // Input buffer
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0, // Input buffer length
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ReparseBuffer, // Output buffer
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MAXIMUM_REPARSE_DATA_BUFFER_SIZE // Output buffer length
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);
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if ( !NT_SUCCESS( Status ) ) {
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RtlFreeHeap(RtlProcessHeap(), 0, ReparseBuffer);
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BaseSetLastNTError(Status);
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return FALSE;
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}
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//
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// Decode the reparse point buffer.
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//
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ReparseBufferHeader = (PREPARSE_DATA_BUFFER)ReparseBuffer;
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//
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// Set the reparse point.
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//
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Status = NtFsControlFile(
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hDestinationFile,
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NULL,
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NULL,
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NULL,
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&IoStatusBlock,
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FSCTL_SET_REPARSE_POINT,
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ReparseBuffer,
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FIELD_OFFSET(REPARSE_DATA_BUFFER, GenericReparseBuffer.DataBuffer) + ReparseBufferHeader->ReparseDataLength,
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NULL,
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0
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);
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RtlFreeHeap(RtlProcessHeap(), 0, ReparseBuffer);
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if ( !NT_SUCCESS( Status ) ) {
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BaseSetLastNTError(Status);
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return FALSE;
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}
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return TRUE;
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}
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DWORD
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WINAPI
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CopyNameGraftNow(
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HANDLE hSourceFile,
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LPCWSTR lpExistingFileName,
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LPCWSTR lpNewFileName,
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ULONG CreateOptions,
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LPPROGRESS_ROUTINE lpProgressRoutine OPTIONAL,
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LPVOID lpData OPTIONAL,
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LPBOOL pbCancel OPTIONAL,
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LPDWORD lpCopyFlags
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)
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/*++
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Routine Description:
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This is an internal routine that copies a name grafting file/directory preserving
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its characteristics.
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Arguments:
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hSourceFile - Provides a handle to the source file.
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lpExistingFileName - Provides the name of the existing, source file.
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lpNewFileName - Provides a name for the target file/stream. This must not
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be a UNC path name.
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lpProgressRoutine - Optionally supplies the address of a callback routine
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to be called as the copy operation progresses.
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lpData - Optionally supplies a context to be passed to the progress callback
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routine.
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pbCancel - Optionally supplies the address of a boolean to be set to TRUE
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if the caller would like the copy to abort.
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lpCopyFlags - Provides flags that modify how the copy is to proceed. See
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CopyFileEx for details.
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Return Value:
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TRUE - The operation was successful.
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FALSE - The operation failed. Extended error status is available
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using GetLastError.
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--*/
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{ // CopyNameGraftNow
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NTSTATUS Status;
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DWORD ReturnValue = FALSE;
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HANDLE DestFile = INVALID_HANDLE_VALUE;
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IO_STATUS_BLOCK IoStatusBlock;
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PREPARSE_DATA_BUFFER ReparseBufferHeader;
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PUCHAR ReparseBuffer = NULL;
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FILE_BASIC_INFORMATION BasicInformation;
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FILE_STANDARD_INFORMATION StandardInformation;
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COPYFILE_CONTEXT CfContext;
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UNICODE_STRING SourceFileName;
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UNICODE_STRING DestFileName;
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PVOID SourceFileNameBuffer = NULL;
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PVOID DestFileNameBuffer = NULL;
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BOOL TranslationStatus;
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BOOL b;
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OBJECT_ATTRIBUTES Obja;
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IO_STATUS_BLOCK IoStatus;
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//
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// Set up the context if appropriate.
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//
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RtlZeroMemory(&StandardInformation, sizeof(StandardInformation));
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if ( ARGUMENT_PRESENT(lpProgressRoutine) || ARGUMENT_PRESENT(pbCancel) ) {
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CfContext.TotalFileSize = StandardInformation.EndOfFile;
|
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CfContext.TotalBytesTransferred.QuadPart = 0;
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CfContext.dwStreamNumber = 0;
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CfContext.lpCancel = pbCancel;
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CfContext.lpData = lpData;
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CfContext.lpProgressRoutine = lpProgressRoutine;
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}
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//
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// Allocate the buffer to set the reparse point.
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//
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ReparseBuffer = RtlAllocateHeap(
|
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RtlProcessHeap(),
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MAKE_TAG( TMP_TAG ),
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MAXIMUM_REPARSE_DATA_BUFFER_SIZE
|
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);
|
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if ( ReparseBuffer == NULL) {
|
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BaseSetLastNTError(STATUS_NO_MEMORY);
|
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return FALSE;
|
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}
|
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|
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try {
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//
|
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// Translate both names.
|
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//
|
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|
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TranslationStatus = RtlDosPathNameToNtPathName_U(
|
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lpExistingFileName,
|
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&SourceFileName,
|
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NULL,
|
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NULL
|
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);
|
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|
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if ( !TranslationStatus ) {
|
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SetLastError(ERROR_PATH_NOT_FOUND);
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DestFile = INVALID_HANDLE_VALUE;
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leave;
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}
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SourceFileNameBuffer = SourceFileName.Buffer;
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|
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TranslationStatus = RtlDosPathNameToNtPathName_U(
|
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lpNewFileName,
|
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&DestFileName,
|
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NULL,
|
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NULL
|
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);
|
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|
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if ( !TranslationStatus ) {
|
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SetLastError(ERROR_PATH_NOT_FOUND);
|
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DestFile = INVALID_HANDLE_VALUE;
|
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leave;
|
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}
|
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DestFileNameBuffer = DestFileName.Buffer;
|
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|
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//
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// Verify that the source and target are different.
|
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//
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|
|
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if ( RtlEqualUnicodeString(&SourceFileName, &DestFileName, TRUE) ) {
|
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//
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// Do nothing. Source and target are the same.
|
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//
|
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|
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DestFile = INVALID_HANDLE_VALUE;
|
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leave;
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}
|
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|
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//
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// Open the destination.
|
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//
|
|
|
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InitializeObjectAttributes(
|
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&Obja,
|
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&DestFileName,
|
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OBJ_CASE_INSENSITIVE,
|
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NULL,
|
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NULL
|
|
);
|
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|
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Status = NtCreateFile( &DestFile,
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GENERIC_READ | GENERIC_WRITE,
|
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&Obja,
|
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&IoStatus,
|
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NULL,
|
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0,
|
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FILE_SHARE_READ | FILE_SHARE_WRITE,
|
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(*lpCopyFlags & COPY_FILE_FAIL_IF_EXISTS) ? FILE_CREATE : FILE_OPEN_IF,
|
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FILE_OPEN_REPARSE_POINT | CreateOptions,
|
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NULL,
|
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0 );
|
|
if( !NT_SUCCESS(Status) ) {
|
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DestFile = INVALID_HANDLE_VALUE;
|
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BaseSetLastNTError(Status);
|
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leave;
|
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}
|
|
|
|
//
|
|
// We now have the handle to the destination.
|
|
// We get and set the corresponding reparse point.
|
|
//
|
|
|
|
Status = NtFsControlFile(
|
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hSourceFile,
|
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NULL,
|
|
NULL,
|
|
NULL,
|
|
&IoStatusBlock,
|
|
FSCTL_GET_REPARSE_POINT,
|
|
NULL, // Input buffer
|
|
0, // Input buffer length
|
|
ReparseBuffer, // Output buffer
|
|
MAXIMUM_REPARSE_DATA_BUFFER_SIZE // Output buffer length
|
|
);
|
|
|
|
if ( !NT_SUCCESS( Status ) ) {
|
|
BaseSetLastNTError(Status);
|
|
leave;
|
|
}
|
|
|
|
//
|
|
// Defensive sanity check. The reparse buffer should be name grafting.
|
|
//
|
|
|
|
ReparseBufferHeader = (PREPARSE_DATA_BUFFER)ReparseBuffer;
|
|
if ( ReparseBufferHeader->ReparseTag != IO_REPARSE_TAG_MOUNT_POINT ) {
|
|
BaseSetLastNTError(STATUS_OBJECT_NAME_INVALID);
|
|
leave;
|
|
}
|
|
|
|
//
|
|
// Determine whether the sourse is a volume mount point.
|
|
//
|
|
|
|
if ( MOUNTMGR_IS_VOLUME_NAME(&SourceFileName) ) {
|
|
//
|
|
// Set the volume mount point and be done.
|
|
//
|
|
|
|
b = SetVolumeMountPointW(
|
|
lpNewFileName,
|
|
ReparseBufferHeader->MountPointReparseBuffer.PathBuffer
|
|
);
|
|
if ( !b ) {
|
|
leave;
|
|
}
|
|
}
|
|
else {
|
|
//
|
|
// Set the reparse point of type name junction.
|
|
//
|
|
|
|
Status = NtFsControlFile(
|
|
DestFile,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
&IoStatusBlock,
|
|
FSCTL_SET_REPARSE_POINT,
|
|
ReparseBuffer,
|
|
FIELD_OFFSET(REPARSE_DATA_BUFFER, GenericReparseBuffer.DataBuffer) + ReparseBufferHeader->ReparseDataLength,
|
|
NULL,
|
|
0
|
|
);
|
|
}
|
|
|
|
if ( !(*lpCopyFlags & COPY_FILE_FAIL_IF_EXISTS) &&
|
|
((Status == STATUS_EAS_NOT_SUPPORTED) ||
|
|
(Status == STATUS_IO_REPARSE_TAG_MISMATCH)) ) {
|
|
//
|
|
// In either of these error conditions, the correct behavior is to
|
|
// first delete the destination file and then copy the name graft.
|
|
//
|
|
// Re-open the destination for the deletion without inhibiting the
|
|
// reparse behavior.
|
|
//
|
|
|
|
BOOL DeleteStatus = FALSE;
|
|
|
|
CloseHandle(DestFile);
|
|
DestFile = INVALID_HANDLE_VALUE;
|
|
|
|
DeleteStatus = DeleteFileW(
|
|
lpNewFileName
|
|
);
|
|
|
|
if ( !DeleteStatus ) {
|
|
leave;
|
|
}
|
|
|
|
//
|
|
// Create the destination name graft.
|
|
// Notice that either a file or a directory may be created.
|
|
//
|
|
|
|
Status = NtCreateFile( &DestFile,
|
|
GENERIC_READ | GENERIC_WRITE,
|
|
&Obja,
|
|
&IoStatus,
|
|
NULL,
|
|
0,
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE,
|
|
FILE_CREATE,
|
|
FILE_OPEN_REPARSE_POINT | CreateOptions,
|
|
NULL,
|
|
0 );
|
|
if( !NT_SUCCESS( Status )) {
|
|
BaseSetLastNTError( Status );
|
|
leave;
|
|
}
|
|
|
|
//
|
|
// Set the reparse point.
|
|
//
|
|
|
|
Status = NtFsControlFile(
|
|
DestFile,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
&IoStatusBlock,
|
|
FSCTL_SET_REPARSE_POINT,
|
|
ReparseBuffer,
|
|
FIELD_OFFSET(REPARSE_DATA_BUFFER, GenericReparseBuffer.DataBuffer) + ReparseBufferHeader->ReparseDataLength,
|
|
NULL,
|
|
0
|
|
);
|
|
} // if ( !(*lpCopyFlags & COPY_FILE_FAIL_IF_EXISTS) ...
|
|
|
|
//
|
|
// Close the destination file and return appropriatelly.
|
|
//
|
|
|
|
if ( !NT_SUCCESS( Status ) ) {
|
|
BaseSetLastNTError(Status);
|
|
leave;
|
|
}
|
|
|
|
//
|
|
// The name graft was copied. Set the last write time for the file
|
|
// so that it matches the input file.
|
|
//
|
|
|
|
Status = NtQueryInformationFile(
|
|
hSourceFile,
|
|
&IoStatusBlock,
|
|
(PVOID) &BasicInformation,
|
|
sizeof(BasicInformation),
|
|
FileBasicInformation
|
|
);
|
|
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
BaseSetLastNTError(Status);
|
|
leave;
|
|
}
|
|
|
|
BasicInformation.CreationTime.QuadPart = 0;
|
|
BasicInformation.LastAccessTime.QuadPart = 0;
|
|
BasicInformation.FileAttributes = 0;
|
|
|
|
//
|
|
// If the time cannot be set for whatever reason, we still return
|
|
// TRUE.
|
|
//
|
|
|
|
Status = NtSetInformationFile(
|
|
DestFile,
|
|
&IoStatusBlock,
|
|
&BasicInformation,
|
|
sizeof(BasicInformation),
|
|
FileBasicInformation
|
|
);
|
|
|
|
if ( Status == STATUS_SHARING_VIOLATION ) {
|
|
|
|
//
|
|
// IBM PC Lan Program (and other MS-NET servers) return
|
|
// STATUS_SHARING_VIOLATION if an application attempts to perform
|
|
// an NtSetInformationFile on a file handle opened for GENERIC_READ
|
|
// or GENERIC_WRITE.
|
|
//
|
|
// If we get a STATUS_SHARING_VIOLATION on this API we want to:
|
|
//
|
|
// 1) Close the handle to the destination
|
|
// 2) Re-open the file for FILE_WRITE_ATTRIBUTES
|
|
// 3) Re-try the operation.
|
|
//
|
|
|
|
CloseHandle(DestFile);
|
|
|
|
//
|
|
// Re-Open the destination file inhibiting the reparse behavior as
|
|
// we know that it is a symbolic link. Please note that we do this
|
|
// using the CreateFileW API. The CreateFileW API allows you to
|
|
// pass NT native desired access flags, even though it is not
|
|
// documented to work in this manner.
|
|
//
|
|
|
|
Status = NtCreateFile( &DestFile,
|
|
FILE_WRITE_ATTRIBUTES,
|
|
&Obja,
|
|
&IoStatus,
|
|
NULL,
|
|
0,
|
|
0,
|
|
FILE_OPEN,
|
|
FILE_OPEN_REPARSE_POINT | CreateOptions,
|
|
NULL,
|
|
0 );
|
|
|
|
if ( NT_SUCCESS( Status )) {
|
|
|
|
//
|
|
// If the open succeeded, we update the file information on
|
|
// the new file.
|
|
//
|
|
// Note that we ignore any errors from this point on.
|
|
//
|
|
|
|
Status = NtSetInformationFile(
|
|
DestFile,
|
|
&IoStatusBlock,
|
|
&BasicInformation,
|
|
sizeof(BasicInformation),
|
|
FileBasicInformation
|
|
);
|
|
|
|
}
|
|
}
|
|
|
|
ReturnValue = TRUE;
|
|
|
|
} finally {
|
|
if( INVALID_HANDLE_VALUE != DestFile )
|
|
CloseHandle( DestFile );
|
|
RtlFreeHeap( RtlProcessHeap(), 0, SourceFileNameBuffer );
|
|
RtlFreeHeap( RtlProcessHeap(), 0, DestFileNameBuffer );
|
|
RtlFreeHeap(RtlProcessHeap(), 0, ReparseBuffer);
|
|
}
|
|
|
|
return ReturnValue;
|
|
}
|
|
|
|
|
|
BOOL
|
|
WINAPI
|
|
CopyFileA(
|
|
LPCSTR lpExistingFileName,
|
|
LPCSTR lpNewFileName,
|
|
BOOL bFailIfExists
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
ANSI thunk to CopyFileW
|
|
|
|
--*/
|
|
|
|
{
|
|
PUNICODE_STRING StaticUnicode;
|
|
UNICODE_STRING DynamicUnicode;
|
|
BOOL b;
|
|
|
|
StaticUnicode = Basep8BitStringToStaticUnicodeString( lpExistingFileName );
|
|
if (StaticUnicode == NULL) {
|
|
return FALSE;
|
|
}
|
|
|
|
if (!Basep8BitStringToDynamicUnicodeString( &DynamicUnicode, lpNewFileName )) {
|
|
return FALSE;
|
|
}
|
|
|
|
b = CopyFileExW(
|
|
(LPCWSTR)StaticUnicode->Buffer,
|
|
(LPCWSTR)DynamicUnicode.Buffer,
|
|
(LPPROGRESS_ROUTINE)NULL,
|
|
(LPVOID)NULL,
|
|
(LPBOOL)NULL,
|
|
bFailIfExists ? COPY_FILE_FAIL_IF_EXISTS : 0
|
|
);
|
|
|
|
RtlFreeUnicodeString(&DynamicUnicode);
|
|
|
|
return b;
|
|
}
|
|
|
|
BOOL
|
|
WINAPI
|
|
CopyFileW(
|
|
LPCWSTR lpExistingFileName,
|
|
LPCWSTR lpNewFileName,
|
|
BOOL bFailIfExists
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
A file, its extended attributes, alternate data streams, and any other
|
|
attributes can be copied using CopyFile.
|
|
|
|
Arguments:
|
|
|
|
lpExistingFileName - Supplies the name of an existing file that is to be
|
|
copied.
|
|
|
|
lpNewFileName - Supplies the name where a copy of the existing
|
|
files data and attributes are to be stored.
|
|
|
|
bFailIfExists - Supplies a flag that indicates how this operation is
|
|
to proceed if the specified new file already exists. A value of
|
|
TRUE specifies that this call is to fail. A value of FALSE
|
|
causes the call to the function to succeed whether or not the
|
|
specified new file exists.
|
|
|
|
Return Value:
|
|
|
|
TRUE - The operation was successful.
|
|
|
|
FALSE/NULL - The operation failed. Extended error status is available
|
|
using GetLastError.
|
|
|
|
--*/
|
|
|
|
{
|
|
BOOL b;
|
|
|
|
b = CopyFileExW(
|
|
lpExistingFileName,
|
|
lpNewFileName,
|
|
(LPPROGRESS_ROUTINE)NULL,
|
|
(LPVOID)NULL,
|
|
(LPBOOL)NULL,
|
|
bFailIfExists ? COPY_FILE_FAIL_IF_EXISTS : 0
|
|
);
|
|
|
|
return b;
|
|
}
|
|
|
|
BOOL
|
|
WINAPI
|
|
CopyFileExA(
|
|
LPCSTR lpExistingFileName,
|
|
LPCSTR lpNewFileName,
|
|
LPPROGRESS_ROUTINE lpProgressRoutine OPTIONAL,
|
|
LPVOID lpData OPTIONAL,
|
|
LPBOOL pbCancel OPTIONAL,
|
|
DWORD dwCopyFlags
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
ANSI thunk to CopyFileExW
|
|
|
|
--*/
|
|
|
|
{
|
|
PUNICODE_STRING StaticUnicode;
|
|
UNICODE_STRING DynamicUnicode;
|
|
BOOL b;
|
|
|
|
StaticUnicode = Basep8BitStringToStaticUnicodeString( lpExistingFileName );
|
|
if (StaticUnicode == NULL) {
|
|
return FALSE;
|
|
}
|
|
|
|
if (!Basep8BitStringToDynamicUnicodeString( &DynamicUnicode, lpNewFileName )) {
|
|
return FALSE;
|
|
}
|
|
|
|
b = CopyFileExW(
|
|
(LPCWSTR)StaticUnicode->Buffer,
|
|
(LPCWSTR)DynamicUnicode.Buffer,
|
|
lpProgressRoutine,
|
|
lpData,
|
|
pbCancel,
|
|
dwCopyFlags
|
|
);
|
|
|
|
RtlFreeUnicodeString(&DynamicUnicode);
|
|
|
|
return b;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
#define COPY_FILE_VALID_FLAGS (COPY_FILE_FAIL_IF_EXISTS | \
|
|
COPY_FILE_RESTARTABLE | \
|
|
COPY_FILE_OPEN_SOURCE_FOR_WRITE | \
|
|
COPY_FILE_ALLOW_DECRYPTED_DESTINATION)
|
|
|
|
|
|
|
|
|
|
NTSTATUS
|
|
BasepProcessNameGrafting( HANDLE SourceFile,
|
|
PBOOL IsNameGrafting,
|
|
PBOOL bCopyRawSourceFile,
|
|
PBOOL bOpenFilesAsReparsePoint,
|
|
PFILE_ATTRIBUTE_TAG_INFORMATION FileTagInformation )
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
During CopyFile, check to see if the source is a symlink which
|
|
requires special processing during copy.
|
|
|
|
Arguments:
|
|
|
|
SourceFile - Handle for the source of the copy.
|
|
|
|
IsNameGrafting - If true on return, the source file is grafted.
|
|
|
|
bCopyRawSourceFile - If true on return, the source file needn't be
|
|
reopened. If false, the file should be reopened without the
|
|
FILE_OPEN_REPARSE_POINT flag.
|
|
|
|
bOpenFilesAsReparsePoint - If true on return, source/dest named
|
|
streams should be opened/created with FILE_OPEN_REPARSE_POINT
|
|
specified.
|
|
|
|
FileTagInformation - Pointer to location to hold the results of
|
|
NtQueryInformationFile(FileAttributeTagInformation).
|
|
|
|
Return Value:
|
|
|
|
NTSTATUS
|
|
|
|
--*/
|
|
|
|
|
|
{
|
|
IO_STATUS_BLOCK IoStatus;
|
|
NTSTATUS Status = STATUS_SUCCESS;
|
|
|
|
Status = NtQueryInformationFile(
|
|
SourceFile,
|
|
&IoStatus,
|
|
(PVOID) FileTagInformation,
|
|
sizeof(*FileTagInformation),
|
|
FileAttributeTagInformation
|
|
);
|
|
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
//
|
|
// Not all File Systems implement all information classes.
|
|
// The value STATUS_INVALID_PARAMETER is returned when a non-supported
|
|
// information class is requested to a back-level File System. As all
|
|
// the parameters to NtQueryInformationFile are correct, we can infer
|
|
// in this case that we found a back-level system.
|
|
//
|
|
|
|
if ( (Status != STATUS_INVALID_PARAMETER) &&
|
|
(Status != STATUS_NOT_IMPLEMENTED) ) {
|
|
return( Status );
|
|
}
|
|
Status = STATUS_SUCCESS;
|
|
|
|
//
|
|
// If FileAttributeTagInformation is not supported, we assume that
|
|
// the file at hand is not a reparse point nor a symbolic link.
|
|
// The copy of these files is the same as the raw copy of a file.
|
|
// The target file is opened without inhibiting the reparse point
|
|
// behavior.
|
|
//
|
|
|
|
*bCopyRawSourceFile = TRUE;
|
|
} else {
|
|
//
|
|
// The source file is opened and the file system supports the
|
|
// FileAttributeTagInformation information class.
|
|
//
|
|
|
|
if ( FileTagInformation->FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT ) {
|
|
//
|
|
// We have a reparse point at hand.
|
|
//
|
|
|
|
if ( FileTagInformation->ReparseTag == IO_REPARSE_TAG_MOUNT_POINT ) {
|
|
//
|
|
// We found a name grafting operation.
|
|
//
|
|
|
|
*IsNameGrafting = TRUE;
|
|
}
|
|
|
|
} else {
|
|
//
|
|
// We have a valid handle.
|
|
// The underlying file system supports reparse points.
|
|
// The source file is not a reparse point.
|
|
// This is the case of a normal file in NT 5.0.
|
|
// The SourceFile handle can be used for the copy. The copy of
|
|
// these files is the same as the raw copy of a reparse point.
|
|
// The target file is opened without inhibiting the reparse
|
|
// point behavior.
|
|
//
|
|
|
|
*bCopyRawSourceFile = TRUE;
|
|
}
|
|
}
|
|
|
|
return( Status );
|
|
}
|
|
|
|
|
|
|
|
BOOL
|
|
BasepCopySecurityInformation( LPCWSTR lpExistingFileName,
|
|
HANDLE SourceFile,
|
|
ACCESS_MASK SourceFileAccess,
|
|
LPCWSTR lpNewFileName,
|
|
HANDLE DestFile,
|
|
ACCESS_MASK DestFileAccess,
|
|
SECURITY_INFORMATION SecurityInformation,
|
|
LPCOPYFILE_CONTEXT Context,
|
|
DWORD DestFileFsAttributes,
|
|
PBOOL Canceled,
|
|
BOOL CopyCreatorOwnerAce );
|
|
|
|
BOOL
|
|
BasepCopyFileCallback( BOOL ContinueByDefault,
|
|
DWORD Win32ErrorOnStopOrCancel,
|
|
LPCOPYFILE_CONTEXT Context,
|
|
PLARGE_INTEGER StreamBytesCopied OPTIONAL,
|
|
DWORD CallbackReason,
|
|
HANDLE SourceFile,
|
|
HANDLE DestFile,
|
|
OPTIONAL PBOOL Canceled );
|
|
|
|
|
|
|
|
BOOL
|
|
BasepCopyFileExW(
|
|
LPCWSTR lpExistingFileName,
|
|
LPCWSTR lpNewFileName,
|
|
LPPROGRESS_ROUTINE lpProgressRoutine OPTIONAL,
|
|
LPVOID lpData OPTIONAL,
|
|
LPBOOL pbCancel OPTIONAL,
|
|
DWORD dwCopyFlags,
|
|
DWORD dwPrivCopyFlags, // From PrivCopyFileExW
|
|
LPHANDLE phSource,
|
|
LPHANDLE phDest
|
|
)
|
|
{
|
|
HANDLE SourceFile = INVALID_HANDLE_VALUE;
|
|
HANDLE DestFile = INVALID_HANDLE_VALUE;
|
|
DWORD b = FALSE;
|
|
BOOL IsNameGrafting = FALSE;
|
|
BOOL bCopyRawSourceFile = FALSE;
|
|
BOOL bOpenFilesAsReparsePoint = FALSE;
|
|
ULONG CopySize;
|
|
NTSTATUS Status;
|
|
OBJECT_ATTRIBUTES ObjectAttributes;
|
|
IO_STATUS_BLOCK IoStatus;
|
|
FILE_STANDARD_INFORMATION FileInformation;
|
|
FILE_BASIC_INFORMATION BasicInformation;
|
|
PFILE_STREAM_INFORMATION StreamInfo;
|
|
PFILE_STREAM_INFORMATION StreamInfoBase = NULL;
|
|
UNICODE_STRING StreamName;
|
|
HANDLE OutputStream;
|
|
HANDLE StreamHandle;
|
|
ULONG StreamInfoSize;
|
|
COPYFILE_CONTEXT CfContext;
|
|
LPCOPYFILE_CONTEXT CopyFileContext = NULL;
|
|
RESTART_STATE RestartState;
|
|
DWORD SourceFileAttributes = 0;
|
|
DWORD FlagsAndAttributes = 0;
|
|
DWORD FileFlagBackupSemantics = 0;
|
|
DWORD DestFileFsAttributes = 0;
|
|
DWORD SourceFileAccessDefault;
|
|
DWORD SourceFileAccess = 0;
|
|
DWORD SourceFileFlagsAndAttributes = 0;
|
|
DWORD SourceFileSharing = 0;
|
|
DWORD SourceFileSharingDefault = 0;
|
|
BOOL CheckedForNameGrafting = FALSE;
|
|
FILE_ATTRIBUTE_TAG_INFORMATION FileTagInformation;
|
|
|
|
//
|
|
// Ensure that only valid flags were passed.
|
|
//
|
|
|
|
if ( dwCopyFlags & ~COPY_FILE_VALID_FLAGS ) {
|
|
BaseSetLastNTError(STATUS_INVALID_PARAMETER);
|
|
return FALSE;
|
|
}
|
|
|
|
if ( dwPrivCopyFlags & ~PRIVCOPY_FILE_VALID_FLAGS ) {
|
|
BaseSetLastNTError(STATUS_INVALID_PARAMETER);
|
|
return FALSE;
|
|
}
|
|
|
|
// Make sure the copy_file and privcopy_file flags don't overlap
|
|
// in winbase.w.
|
|
ASSERT( (PRIVCOPY_FILE_VALID_FLAGS & COPY_FILE_VALID_FLAGS) == 0 );
|
|
dwCopyFlags |= dwPrivCopyFlags;
|
|
|
|
try {
|
|
|
|
//
|
|
// We first establish whether we are copying a reparse point:
|
|
// (1) obtain a handle inhibiting the reparse point behavior
|
|
// (2) establish whether a symbolic link was found
|
|
// (3) establish whether a reparse point that is not a symbolic link
|
|
// is to be copied in raw format or re-enabling the reparse point
|
|
// behavior
|
|
//
|
|
|
|
// Determine if backup-intent should be set.
|
|
if( (PRIVCOPY_FILE_DIRECTORY|PRIVCOPY_FILE_BACKUP_SEMANTICS) & dwCopyFlags ) {
|
|
FileFlagBackupSemantics = FILE_FLAG_BACKUP_SEMANTICS;
|
|
}
|
|
|
|
SourceFileAccessDefault = GENERIC_READ;
|
|
SourceFileAccessDefault |= (dwCopyFlags & COPY_FILE_OPEN_SOURCE_FOR_WRITE) ? GENERIC_WRITE : 0;
|
|
SourceFileAccessDefault |= (dwCopyFlags & PRIVCOPY_FILE_SACL) ? ACCESS_SYSTEM_SECURITY : 0;
|
|
|
|
SourceFileFlagsAndAttributes = FILE_FLAG_OPEN_REPARSE_POINT | FILE_FLAG_SEQUENTIAL_SCAN | FileFlagBackupSemantics;
|
|
CheckedForNameGrafting = FALSE;
|
|
SourceFileSharingDefault = FILE_SHARE_READ;
|
|
|
|
retry_open_SourceFile:
|
|
|
|
SourceFileAccess = SourceFileAccessDefault;
|
|
SourceFileSharing = SourceFileSharingDefault;
|
|
|
|
while( TRUE ) {
|
|
|
|
SourceFile = CreateFileW(
|
|
lpExistingFileName,
|
|
SourceFileAccess,
|
|
SourceFileSharing,
|
|
NULL,
|
|
OPEN_EXISTING,
|
|
SourceFileFlagsAndAttributes,
|
|
NULL
|
|
);
|
|
|
|
if ( SourceFile == INVALID_HANDLE_VALUE ) {
|
|
|
|
// If we tried to get ACCESS_SYSTEM_SECURITY access, that
|
|
// might cause an access or privilege error.
|
|
if( ( GetLastError() == ERROR_PRIVILEGE_NOT_HELD
|
|
||
|
|
GetLastError() == ERROR_ACCESS_DENIED
|
|
)
|
|
&&
|
|
(SourceFileAccess & ACCESS_SYSTEM_SECURITY) ) {
|
|
|
|
// Turn it off
|
|
SourceFileAccess &= ~ACCESS_SYSTEM_SECURITY;
|
|
}
|
|
|
|
|
|
// Maybe we should stop requesting write access (done for
|
|
// COPYFILE_OPEN_SOURCE_FOR_WRITE
|
|
else if( ( GetLastError() == ERROR_ACCESS_DENIED ||
|
|
GetLastError() == ERROR_SHARING_VIOLATION ) &&
|
|
(GENERIC_WRITE & SourceFileAccess) ) {
|
|
|
|
// Turn it off, but if originally requested,
|
|
// turn access_system_security back on.
|
|
SourceFileAccess &= ~GENERIC_WRITE;
|
|
|
|
if( SourceFileAccessDefault & ACCESS_SYSTEM_SECURITY ) {
|
|
SourceFileAccess |= ACCESS_SYSTEM_SECURITY;
|
|
}
|
|
}
|
|
|
|
// Try sharing for writing.
|
|
else if( !(FILE_SHARE_WRITE & SourceFileSharing) ) {
|
|
// Add write-sharing
|
|
SourceFileSharing |= FILE_SHARE_WRITE;
|
|
|
|
// Start back over wrt the access flags
|
|
SourceFileAccess = SourceFileAccessDefault;
|
|
}
|
|
|
|
//
|
|
// There is the case when we still do not get the file opened and we
|
|
// do want to proceed with the copy. Pre NT 5.0 systems do not support
|
|
// FILE_FLAG_OPEN_REPARSE_POINT. If this happens, by initialization we
|
|
// have that:
|
|
// IsNameGrafting is FALSE and
|
|
// bCopyRawSourceFile is FALSE and
|
|
// bOpenFilesAsReparsePoint is FALSE
|
|
//
|
|
|
|
else if( FILE_FLAG_OPEN_REPARSE_POINT & SourceFileFlagsAndAttributes ) {
|
|
// Turn off open-reparse
|
|
SourceFileFlagsAndAttributes &= ~FILE_FLAG_OPEN_REPARSE_POINT;
|
|
|
|
// Reset the access & sharing back to default
|
|
SourceFileAccess = SourceFileAccessDefault;
|
|
SourceFileSharing = SourceFileSharingDefault;
|
|
}
|
|
|
|
|
|
// Otherwise there's nothing more we can try.
|
|
else {
|
|
leave;
|
|
}
|
|
|
|
|
|
} // if ( SourceFile == INVALID_HANDLE_VALUE )
|
|
|
|
// We've opened the source file. If we haven't yet checked for
|
|
// name grafting (symbolic links), do so now.
|
|
|
|
else if( !CheckedForNameGrafting ) {
|
|
|
|
CheckedForNameGrafting = TRUE;
|
|
|
|
//
|
|
// Find out whether the file is a symbolic link and whether a reparse
|
|
// point can be copied with the reparse behavior inhibited.
|
|
//
|
|
|
|
Status = BasepProcessNameGrafting( SourceFile,
|
|
&IsNameGrafting,
|
|
&bCopyRawSourceFile,
|
|
&bOpenFilesAsReparsePoint,
|
|
&FileTagInformation );
|
|
if( !NT_SUCCESS(Status) ) {
|
|
CloseHandle( SourceFile );
|
|
SourceFile = INVALID_HANDLE_VALUE;
|
|
BaseSetLastNTError(Status);
|
|
leave;
|
|
}
|
|
|
|
if ( IsNameGrafting ) {
|
|
//
|
|
// Do now the copy of a name grafting file/directory.
|
|
//
|
|
|
|
Status = CopyNameGraftNow(
|
|
SourceFile,
|
|
lpExistingFileName,
|
|
lpNewFileName,
|
|
(PRIVCOPY_FILE_DIRECTORY & dwPrivCopyFlags)
|
|
? (FILE_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT)
|
|
: 0,
|
|
lpProgressRoutine,
|
|
lpData,
|
|
pbCancel,
|
|
&dwCopyFlags
|
|
);
|
|
|
|
CloseHandle(SourceFile);
|
|
SourceFile = INVALID_HANDLE_VALUE;
|
|
|
|
if( !Status ) {
|
|
b = FALSE;
|
|
leave;
|
|
}
|
|
|
|
b = TRUE;
|
|
leave;
|
|
}
|
|
|
|
// If we're doing a raw copy, we can start doing the copy with this
|
|
// SourceFile handle.
|
|
|
|
if ( bCopyRawSourceFile ) {
|
|
break; // while( TRUE )
|
|
}
|
|
|
|
// Otherwise, we need to reopen without FILE_FLAG_OPEN_REPARSE_POINT;
|
|
else {
|
|
// Turn off open-as-reparse
|
|
SourceFileFlagsAndAttributes &= ~FILE_FLAG_OPEN_REPARSE_POINT;
|
|
|
|
CloseHandle( SourceFile );
|
|
SourceFile = INVALID_HANDLE_VALUE;
|
|
|
|
// Since SourceFileAccess & SourceFileSharing are already set,
|
|
// the next CreateFile attempt should succeed.
|
|
}
|
|
|
|
} // else if( !CheckedForNameGrafting )
|
|
|
|
// Otherwise, we have the file open, and we're done checking for grafting
|
|
else {
|
|
break;
|
|
}
|
|
|
|
} // while( TRUE )
|
|
|
|
|
|
//
|
|
// Size the source file to determine how much data is to be copied
|
|
//
|
|
|
|
Status = NtQueryInformationFile(
|
|
SourceFile,
|
|
&IoStatus,
|
|
(PVOID) &FileInformation,
|
|
sizeof(FileInformation),
|
|
FileStandardInformation
|
|
);
|
|
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
BaseSetLastNTError(Status);
|
|
leave;
|
|
}
|
|
|
|
//
|
|
// Get the timestamp info as well.
|
|
//
|
|
|
|
Status = NtQueryInformationFile(
|
|
SourceFile,
|
|
&IoStatus,
|
|
(PVOID) &BasicInformation,
|
|
sizeof(BasicInformation),
|
|
FileBasicInformation
|
|
);
|
|
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
BaseSetLastNTError(Status);
|
|
leave;
|
|
}
|
|
|
|
SourceFileAttributes = BasicInformation.FileAttributes; // Cache for later use
|
|
|
|
//
|
|
// Set up the context if appropriate.
|
|
//
|
|
|
|
if ( ARGUMENT_PRESENT(lpProgressRoutine) || ARGUMENT_PRESENT(pbCancel) ) {
|
|
|
|
CfContext.TotalFileSize = FileInformation.EndOfFile;
|
|
CfContext.TotalBytesTransferred.QuadPart = 0;
|
|
CfContext.dwStreamNumber = 0;
|
|
CfContext.lpCancel = pbCancel;
|
|
CfContext.lpData = lpData;
|
|
CfContext.lpProgressRoutine = lpProgressRoutine;
|
|
CopyFileContext = &CfContext;
|
|
}
|
|
|
|
//
|
|
// Obtain the full set of streams we have to copy. Since the Io subsystem does
|
|
// not provide us a way to find out how much space this information will take,
|
|
// we must iterate the call, doubling the buffer size upon each failure.
|
|
//
|
|
// If the underlying file system does not support stream enumeration, we end up
|
|
// with a NULL buffer. This is acceptable since we have at least a default
|
|
// data stream.
|
|
//
|
|
// We also allocate one more character than necessary since we use the returned
|
|
// stream names in place when calling BaseCopyStream and we must NUL-terminate
|
|
// the names
|
|
//
|
|
|
|
StreamInfoSize = 4096;
|
|
do {
|
|
StreamInfoBase = RtlAllocateHeap( RtlProcessHeap(),
|
|
MAKE_TAG( TMP_TAG ),
|
|
StreamInfoSize );
|
|
|
|
if ( !StreamInfoBase ) {
|
|
BaseSetLastNTError( STATUS_NO_MEMORY );
|
|
leave;
|
|
}
|
|
|
|
Status = NtQueryInformationFile(
|
|
SourceFile,
|
|
&IoStatus,
|
|
(PVOID) StreamInfoBase,
|
|
StreamInfoSize - sizeof( WCHAR ),
|
|
FileStreamInformation
|
|
);
|
|
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
//
|
|
// We failed the call. Free up the previous buffer and set up
|
|
// for another pass with a buffer twice as large
|
|
//
|
|
|
|
RtlFreeHeap(RtlProcessHeap(), 0, StreamInfoBase);
|
|
StreamInfoBase = NULL;
|
|
StreamInfoSize *= 2;
|
|
}
|
|
else if( IoStatus.Information == 0 ) {
|
|
//
|
|
// There are no streams (SourceFile must be a directory).
|
|
//
|
|
RtlFreeHeap(RtlProcessHeap(), 0, StreamInfoBase);
|
|
StreamInfoBase = NULL;
|
|
}
|
|
|
|
} while ( Status == STATUS_BUFFER_OVERFLOW || Status == STATUS_BUFFER_TOO_SMALL );
|
|
|
|
//
|
|
// If a progress routine or a restartable copy was requested, obtain the
|
|
// full size of the entire file, including its alternate data streams, etc.
|
|
//
|
|
|
|
if ( ARGUMENT_PRESENT(lpProgressRoutine) ||
|
|
(dwCopyFlags & COPY_FILE_RESTARTABLE) ) {
|
|
|
|
if ( dwCopyFlags & COPY_FILE_RESTARTABLE ) {
|
|
|
|
RestartState.Type = 0x7a9b;
|
|
RestartState.Size = sizeof( RESTART_STATE );
|
|
RestartState.CreationTime = BasicInformation.CreationTime;
|
|
RestartState.WriteTime = BasicInformation.LastWriteTime;
|
|
RestartState.EndOfFile = FileInformation.EndOfFile;
|
|
RestartState.FileSize = FileInformation.EndOfFile;
|
|
RestartState.NumberOfStreams = 0;
|
|
RestartState.CurrentStream = 0;
|
|
RestartState.LastKnownGoodOffset.QuadPart = 0;
|
|
}
|
|
|
|
if ( StreamInfoBase != NULL ) {
|
|
|
|
ULONGLONG TotalSize = 0;
|
|
|
|
StreamInfo = StreamInfoBase;
|
|
while (TRUE) {
|
|
//
|
|
// Account for the size of this stream in the overall size of
|
|
// the file.
|
|
//
|
|
|
|
TotalSize += StreamInfo->StreamSize.QuadPart;
|
|
RestartState.NumberOfStreams++;
|
|
|
|
if (StreamInfo->NextEntryOffset == 0) {
|
|
break;
|
|
}
|
|
StreamInfo = (PFILE_STREAM_INFORMATION)((PCHAR) StreamInfo + StreamInfo->NextEntryOffset);
|
|
}
|
|
|
|
RestartState.FileSize.QuadPart =
|
|
CfContext.TotalFileSize.QuadPart = TotalSize;
|
|
RestartState.NumberOfStreams--;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Set the Basic Info to change only the WriteTime
|
|
//
|
|
BasicInformation.CreationTime.QuadPart = 0;
|
|
BasicInformation.LastAccessTime.QuadPart = 0;
|
|
BasicInformation.FileAttributes = 0;
|
|
|
|
//
|
|
// Determine whether or not the copy operation should really be restartable
|
|
// based on the actual, total file size.
|
|
//
|
|
|
|
if ( (dwCopyFlags & COPY_FILE_RESTARTABLE) &&
|
|
( RestartState.FileSize.QuadPart < (512 * 1024) ||
|
|
(SourceFileAttributes & FILE_ATTRIBUTE_DIRECTORY) )) {
|
|
dwCopyFlags &= ~COPY_FILE_RESTARTABLE;
|
|
}
|
|
|
|
//
|
|
// Copy the default data stream, EAs, etc. to the output file
|
|
//
|
|
|
|
b = BaseCopyStream(
|
|
lpExistingFileName,
|
|
SourceFile,
|
|
SourceFileAccess,
|
|
lpNewFileName,
|
|
NULL,
|
|
&FileInformation.EndOfFile,
|
|
&dwCopyFlags,
|
|
&DestFile,
|
|
&CopySize,
|
|
&CopyFileContext,
|
|
&RestartState,
|
|
bOpenFilesAsReparsePoint,
|
|
FileTagInformation.ReparseTag,
|
|
&DestFileFsAttributes // In: 0, Out: Correct value
|
|
);
|
|
|
|
if ( bOpenFilesAsReparsePoint &&
|
|
!b &&
|
|
!((GetLastError() == ERROR_FILE_EXISTS) && (dwCopyFlags & COPY_FILE_FAIL_IF_EXISTS)) ) {
|
|
|
|
//
|
|
// Clean up.
|
|
//
|
|
|
|
if (!(SourceFileAttributes & FILE_ATTRIBUTE_READONLY)) {
|
|
BaseMarkFileForDelete(DestFile, FILE_ATTRIBUTE_NORMAL);
|
|
}
|
|
|
|
if (DestFile != INVALID_HANDLE_VALUE) {
|
|
CloseHandle( DestFile );
|
|
DestFile = INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
if (SourceFileAttributes & FILE_ATTRIBUTE_READONLY) {
|
|
|
|
// Delete the destination file before retry
|
|
// Some servers (like Win9x) won't let us set file attributes
|
|
// on the handle we already have opened. SetFileAttributesW
|
|
// can do the job nicely, so we'll call that to make sure that
|
|
// the read-only bit isn't set.
|
|
// We had to close DestFile before doing this because it was
|
|
// possibly opened share-exclusive.
|
|
SetFileAttributesW(lpNewFileName, FILE_ATTRIBUTE_NORMAL);
|
|
(void) DeleteFileW(lpNewFileName);
|
|
}
|
|
|
|
if (SourceFile != INVALID_HANDLE_VALUE) {
|
|
CloseHandle( SourceFile );
|
|
SourceFile = INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
RtlFreeHeap( RtlProcessHeap(), 0, StreamInfoBase );
|
|
StreamInfoBase = NULL ;
|
|
|
|
//
|
|
// Try again the copy operation without inhibiting the reparse
|
|
// behavior for the source.
|
|
//
|
|
|
|
SourceFileFlagsAndAttributes &= ~FILE_FLAG_OPEN_REPARSE_POINT;
|
|
bOpenFilesAsReparsePoint = FALSE;
|
|
|
|
//
|
|
// Go to re-open the source file without inhibiting the reparse
|
|
// point behavior and try the copy again.
|
|
//
|
|
|
|
goto retry_open_SourceFile;
|
|
}
|
|
|
|
if ( b ) {
|
|
|
|
//
|
|
// Attempt to determine whether or not this file has any alternate
|
|
// data streams associated with it. If it does, attempt to copy each
|
|
// to the output file. Note that the stream information may have
|
|
// already been obtained if a progress routine was requested.
|
|
//
|
|
|
|
if ( StreamInfoBase != NULL ) {
|
|
DWORD StreamCount = 0;
|
|
BOOLEAN CheckedForStreamCapable = FALSE;
|
|
BOOLEAN IsStreamCapable = FALSE;
|
|
StreamInfo = StreamInfoBase;
|
|
|
|
while (TRUE) {
|
|
|
|
FILE_STREAM_INFORMATION DestStreamInformation;
|
|
Status = STATUS_SUCCESS;
|
|
|
|
//
|
|
// Skip the default data stream since we've already copied
|
|
// it. Alas, this code is NTFS specific and documented
|
|
// nowhere in the Io spec.
|
|
//
|
|
|
|
if (StreamInfo->StreamNameLength <= sizeof(WCHAR) ||
|
|
StreamInfo->StreamName[1] == ':') {
|
|
if (StreamInfo->NextEntryOffset == 0)
|
|
break; // Done with streams
|
|
StreamInfo = (PFILE_STREAM_INFORMATION)((PCHAR) StreamInfo +
|
|
StreamInfo->NextEntryOffset);
|
|
continue; // Move on to the next stream
|
|
}
|
|
|
|
StreamCount++;
|
|
|
|
if ( b == SUCCESS_RETURNED_STATE && CopyFileContext ) {
|
|
if ( StreamCount < RestartState.CurrentStream ) {
|
|
CopyFileContext->TotalBytesTransferred.QuadPart += StreamInfo->StreamSize.QuadPart;
|
|
}
|
|
else {
|
|
CopyFileContext->TotalBytesTransferred.QuadPart += RestartState.LastKnownGoodOffset.QuadPart;
|
|
}
|
|
}
|
|
|
|
//
|
|
// If we haven't already, verify that both the source and destination
|
|
// are really stream capable.
|
|
//
|
|
|
|
if( !CheckedForStreamCapable ) {
|
|
|
|
struct {
|
|
FILE_FS_ATTRIBUTE_INFORMATION Info;
|
|
WCHAR Buffer[ MAX_PATH ];
|
|
} FileFsAttrInfoBuffer;
|
|
|
|
CheckedForStreamCapable = TRUE;
|
|
|
|
// Check for the supports-streams bit in the dest filesystem.
|
|
|
|
Status = NtQueryVolumeInformationFile( DestFile,
|
|
&IoStatus,
|
|
&FileFsAttrInfoBuffer.Info,
|
|
sizeof(FileFsAttrInfoBuffer),
|
|
FileFsAttributeInformation );
|
|
if( NT_SUCCESS(Status) &&
|
|
(FileFsAttrInfoBuffer.Info.FileSystemAttributes & FILE_NAMED_STREAMS) ) {
|
|
|
|
// It seems redundant to check to see if the source is stream capable,
|
|
// since we already got back a successful stream enumeration, but some
|
|
// SMB servers (SCO VisionFS) return success but don't really support
|
|
// streams.
|
|
|
|
Status = NtQueryVolumeInformationFile( SourceFile,
|
|
&IoStatus,
|
|
&FileFsAttrInfoBuffer.Info,
|
|
sizeof(FileFsAttrInfoBuffer),
|
|
FileFsAttributeInformation );
|
|
}
|
|
|
|
|
|
if( !NT_SUCCESS(Status) ||
|
|
!(FileFsAttrInfoBuffer.Info.FileSystemAttributes & FILE_NAMED_STREAMS) ) {
|
|
|
|
if( NT_SUCCESS(Status) ) {
|
|
Status = STATUS_NOT_SUPPORTED;
|
|
}
|
|
|
|
if( dwCopyFlags & PRIVCOPY_FILE_VALID_FLAGS ) {
|
|
if( !BasepCopyFileCallback( TRUE, // Continue by default
|
|
RtlNtStatusToDosError(Status),
|
|
CopyFileContext,
|
|
NULL,
|
|
PRIVCALLBACK_STREAMS_NOT_SUPPORTED,
|
|
SourceFile,
|
|
DestFile,
|
|
NULL )) {
|
|
|
|
// LastError has been set, but we need it in Status
|
|
// for compatibility with the rest of this routine.
|
|
PTEB Teb = NtCurrentTeb();
|
|
if ( Teb ) {
|
|
Status = Teb->LastStatusValue;
|
|
} else {
|
|
Status = STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
b = FALSE;
|
|
} else {
|
|
// Ignore the named stream loss
|
|
Status = STATUS_SUCCESS;
|
|
}
|
|
} else {
|
|
// Ignore the named stream loss. We'll still try to copy the
|
|
// streams, though, since the target might be NT4 which didn't support
|
|
// the FILE_NAMED_STREAMS bit. But since IsStreamCapable is FALSE,
|
|
// if there's an error, we'll ignore it.
|
|
|
|
Status = STATUS_SUCCESS;
|
|
}
|
|
}
|
|
else {
|
|
Status = STATUS_SUCCESS;
|
|
IsStreamCapable = TRUE;
|
|
}
|
|
} // if( !CheckedForStreamCapable )
|
|
|
|
|
|
if ( b == TRUE ||
|
|
(b == SUCCESS_RETURNED_STATE &&
|
|
RestartState.CurrentStream == StreamCount) ) {
|
|
|
|
if ( b != SUCCESS_RETURNED_STATE ) {
|
|
RestartState.CurrentStream = StreamCount;
|
|
RestartState.LastKnownGoodOffset.QuadPart = 0;
|
|
}
|
|
|
|
//
|
|
// Build a string descriptor for the name of the stream.
|
|
//
|
|
|
|
StreamName.Buffer = &StreamInfo->StreamName[0];
|
|
StreamName.Length = (USHORT) StreamInfo->StreamNameLength;
|
|
StreamName.MaximumLength = StreamName.Length;
|
|
|
|
//
|
|
// Open the source stream.
|
|
//
|
|
|
|
InitializeObjectAttributes(
|
|
&ObjectAttributes,
|
|
&StreamName,
|
|
0,
|
|
SourceFile,
|
|
NULL
|
|
);
|
|
|
|
//
|
|
// Inhibit reparse behavior when appropriate.
|
|
//
|
|
|
|
FlagsAndAttributes = FILE_SYNCHRONOUS_IO_NONALERT | FILE_SEQUENTIAL_ONLY;
|
|
if ( bOpenFilesAsReparsePoint ) {
|
|
FlagsAndAttributes |= FILE_OPEN_REPARSE_POINT;
|
|
}
|
|
|
|
Status = NtCreateFile(
|
|
&StreamHandle,
|
|
GENERIC_READ | SYNCHRONIZE,
|
|
&ObjectAttributes,
|
|
&IoStatus,
|
|
NULL,
|
|
0,
|
|
FILE_SHARE_READ,
|
|
FILE_OPEN,
|
|
FlagsAndAttributes,
|
|
NULL,
|
|
0
|
|
);
|
|
|
|
//If we got a share violation, try again with
|
|
// FILE_SHARE_WRITE.
|
|
if ( Status == STATUS_SHARING_VIOLATION ) {
|
|
DWORD dwShare = FILE_SHARE_READ | FILE_SHARE_WRITE;
|
|
|
|
Status = NtCreateFile(
|
|
&StreamHandle,
|
|
GENERIC_READ | SYNCHRONIZE,
|
|
&ObjectAttributes,
|
|
&IoStatus,
|
|
NULL,
|
|
0,
|
|
dwShare,
|
|
FILE_OPEN,
|
|
FlagsAndAttributes,
|
|
NULL,
|
|
0
|
|
);
|
|
}
|
|
|
|
|
|
if ( NT_SUCCESS(Status) ) {
|
|
DWORD dwCopyFlagsNamedStreams;
|
|
WCHAR LastChar = StreamName.Buffer[StreamName.Length / sizeof( WCHAR )];
|
|
|
|
StreamName.Buffer[StreamName.Length / sizeof( WCHAR )] = L'\0';
|
|
|
|
OutputStream = (HANDLE)NULL;
|
|
|
|
//
|
|
// For named streams, ignore the fail-if-exists flag. If the dest
|
|
// file already existed at the time the copy started, then
|
|
// we would have failed on the copy of the unnamed stream. So if
|
|
// a named stream exists, that means that it was created by some
|
|
// other process while we were copying the unnamed stream. The
|
|
// assumption is that such a stream should be overwritten (this
|
|
// scenario can occur with SFM).
|
|
//
|
|
|
|
dwCopyFlagsNamedStreams = dwCopyFlags & ~COPY_FILE_FAIL_IF_EXISTS;
|
|
|
|
b = BaseCopyStream(
|
|
lpExistingFileName,
|
|
StreamHandle,
|
|
SourceFileAccess,
|
|
StreamName.Buffer,
|
|
DestFile,
|
|
&StreamInfo->StreamSize,
|
|
&dwCopyFlagsNamedStreams,
|
|
&OutputStream,
|
|
&CopySize,
|
|
&CopyFileContext,
|
|
&RestartState,
|
|
bOpenFilesAsReparsePoint,
|
|
FileTagInformation.ReparseTag,
|
|
&DestFileFsAttributes // Set by first call to BaseCopyStream
|
|
);
|
|
|
|
StreamName.Buffer[StreamName.Length / sizeof( WCHAR )] = LastChar;
|
|
|
|
NtClose(StreamHandle);
|
|
if ( OutputStream ) {
|
|
|
|
//
|
|
// We set the last write time on all streams
|
|
// since there is a problem with RDR caching
|
|
// open handles and closing them out of order.
|
|
//
|
|
|
|
if ( b ) {
|
|
Status = NtSetInformationFile(
|
|
OutputStream,
|
|
&IoStatus,
|
|
&BasicInformation,
|
|
sizeof(BasicInformation),
|
|
FileBasicInformation
|
|
);
|
|
}
|
|
NtClose(OutputStream);
|
|
}
|
|
|
|
} // Status = NtCreateFile; if( NT_SUCCESS(Status) )
|
|
} // if ( b == TRUE || ...
|
|
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
b = FALSE;
|
|
BaseSetLastNTError(Status);
|
|
}
|
|
|
|
if ( !b ) {
|
|
|
|
// If the target is known to be capable of multi-stream files,
|
|
// then this is a fatal error. Otherwise we'll ignore it.
|
|
|
|
if( IsStreamCapable ) {
|
|
BaseMarkFileForDelete(DestFile,0);
|
|
break; // while( TRUE )
|
|
} else {
|
|
Status = STATUS_SUCCESS;
|
|
b = TRUE;
|
|
}
|
|
}
|
|
|
|
if (StreamInfo->NextEntryOffset == 0) {
|
|
break;
|
|
}
|
|
|
|
StreamInfo =
|
|
(PFILE_STREAM_INFORMATION)((PCHAR) StreamInfo +
|
|
StreamInfo->NextEntryOffset);
|
|
} // while (TRUE)
|
|
} // if ( StreamInfoBase != NULL )
|
|
} // b = BaseCopyStream; if ( b ) ...
|
|
|
|
|
|
//
|
|
// If the copy operation was successful, and it was restartable, and the
|
|
// output file was large enough that it was actually copied in a
|
|
// restartable manner, then copy the initial part of the file to its
|
|
// output.
|
|
//
|
|
// Restartability is accomplished by placing a restart header at the
|
|
// head of the default data stream. When the copy is complete, we
|
|
// overwite this header with the real user data.
|
|
//
|
|
|
|
if ( b && (dwCopyFlags & COPY_FILE_RESTARTABLE) ) {
|
|
|
|
DWORD BytesToRead, BytesRead;
|
|
DWORD BytesWritten;
|
|
FILE_END_OF_FILE_INFORMATION EofInformation;
|
|
|
|
SetFilePointer( SourceFile, 0, NULL, FILE_BEGIN );
|
|
SetFilePointer( DestFile, 0, NULL, FILE_BEGIN );
|
|
|
|
BytesToRead = sizeof(RESTART_STATE);
|
|
if ( FileInformation.EndOfFile.QuadPart < sizeof(RESTART_STATE) ) {
|
|
BytesToRead = FileInformation.EndOfFile.LowPart;
|
|
}
|
|
|
|
//
|
|
// Grab true data from the source stream
|
|
//
|
|
|
|
b = ReadFile(
|
|
SourceFile,
|
|
&RestartState,
|
|
BytesToRead,
|
|
&BytesRead,
|
|
NULL
|
|
);
|
|
|
|
if ( b && (BytesRead == BytesToRead) ) {
|
|
|
|
//
|
|
// Overwrite the restart header in the destination.
|
|
// After this point, the copy is no longer restartable
|
|
//
|
|
|
|
b = WriteFile(
|
|
DestFile,
|
|
&RestartState,
|
|
BytesRead,
|
|
&BytesWritten,
|
|
NULL
|
|
);
|
|
|
|
if ( b && (BytesRead == BytesWritten) ) {
|
|
if ( BytesRead < sizeof(RESTART_STATE) ) {
|
|
EofInformation.EndOfFile.QuadPart = BytesWritten;
|
|
Status = NtSetInformationFile(
|
|
DestFile,
|
|
&IoStatus,
|
|
&EofInformation,
|
|
sizeof(EofInformation),
|
|
FileEndOfFileInformation
|
|
);
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
BaseMarkFileForDelete(DestFile,0);
|
|
b = FALSE;
|
|
}
|
|
}
|
|
} else {
|
|
BaseMarkFileForDelete(DestFile,0);
|
|
b = FALSE;
|
|
}
|
|
} else {
|
|
BaseMarkFileForDelete(DestFile,0);
|
|
b = FALSE;
|
|
}
|
|
}
|
|
|
|
//
|
|
// If the copy operation was successful, set the last write time for the
|
|
// default steam so that it matches the input file.
|
|
//
|
|
|
|
if ( b ) {
|
|
Status = NtSetInformationFile(
|
|
DestFile,
|
|
&IoStatus,
|
|
&BasicInformation,
|
|
sizeof(BasicInformation),
|
|
FileBasicInformation
|
|
);
|
|
|
|
if ( Status == STATUS_SHARING_VIOLATION ) {
|
|
|
|
//
|
|
// IBM PC Lan Program (and other MS-NET servers) return
|
|
// STATUS_SHARING_VIOLATION if an application attempts to perform
|
|
// an NtSetInformationFile on a file handle opened for GENERIC_READ
|
|
// or GENERIC_WRITE.
|
|
//
|
|
// If we get a STATUS_SHARING_VIOLATION on this API we want to:
|
|
//
|
|
// 1) Close the handle to the destination
|
|
// 2) Re-open the file for FILE_WRITE_ATTRIBUTES
|
|
// 3) Re-try the operation.
|
|
//
|
|
|
|
CloseHandle(DestFile);
|
|
DestFile = INVALID_HANDLE_VALUE;
|
|
|
|
//
|
|
// Re-Open the destination file. Please note that we do this
|
|
// using the CreateFileW API. The CreateFileW API allows you to
|
|
// pass NT native desired access flags, even though it is not
|
|
// documented to work in this manner.
|
|
//
|
|
// Inhibit reparse behavior when appropriate.
|
|
//
|
|
|
|
FlagsAndAttributes = FILE_ATTRIBUTE_NORMAL;
|
|
if ( bOpenFilesAsReparsePoint ) {
|
|
FlagsAndAttributes |= FILE_FLAG_OPEN_REPARSE_POINT;
|
|
}
|
|
|
|
DestFile = CreateFileW(
|
|
lpNewFileName,
|
|
FILE_WRITE_ATTRIBUTES,
|
|
0,
|
|
NULL,
|
|
OPEN_EXISTING,
|
|
FlagsAndAttributes | FileFlagBackupSemantics,
|
|
NULL
|
|
);
|
|
|
|
if ( DestFile != INVALID_HANDLE_VALUE ) {
|
|
|
|
//
|
|
// If the open succeeded, we update the file information on
|
|
// the new file.
|
|
//
|
|
// Note that we ignore any errors from this point on.
|
|
//
|
|
|
|
NtSetInformationFile(
|
|
DestFile,
|
|
&IoStatus,
|
|
&BasicInformation,
|
|
sizeof(BasicInformation),
|
|
FileBasicInformation
|
|
);
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
} finally {
|
|
|
|
*phSource = SourceFile;
|
|
*phDest = DestFile;
|
|
|
|
RtlFreeHeap( RtlProcessHeap(), 0, StreamInfoBase );
|
|
}
|
|
|
|
return b;
|
|
}
|
|
|
|
BOOL
|
|
CopyFileExW(
|
|
LPCWSTR lpExistingFileName,
|
|
LPCWSTR lpNewFileName,
|
|
LPPROGRESS_ROUTINE lpProgressRoutine OPTIONAL,
|
|
LPVOID lpData OPTIONAL,
|
|
LPBOOL pbCancel OPTIONAL,
|
|
DWORD dwCopyFlags
|
|
)
|
|
|
|
/*
|
|
|
|
Routine Description:
|
|
|
|
A file, its extended attributes, alternate data streams, and any other
|
|
attributes can be copied using CopyFileEx. CopyFileEx also provides
|
|
callbacks and cancellability.
|
|
|
|
Arguments:
|
|
|
|
lpExistingFileName - Supplies the name of an existing file that is to be
|
|
copied.
|
|
|
|
lpNewFileName - Supplies the name where a copy of the existing
|
|
files data and attributes are to be stored.
|
|
|
|
lpProgressRoutine - Optionally supplies the address of a callback routine
|
|
to be called as the copy operation progresses.
|
|
|
|
lpData - Optionally supplies a context to be passed to the progress callback
|
|
routine.
|
|
|
|
lpCancel - Optionally supplies the address of a boolean to be set to TRUE
|
|
if the caller would like the copy to abort.
|
|
|
|
dwCopyFlags - Specifies flags that modify how the file is to be copied:
|
|
|
|
COPY_FILE_FAIL_IF_EXISTS - Indicates that the copy operation should
|
|
fail immediately if the target file already exists.
|
|
|
|
COPY_FILE_RESTARTABLE - Indicates that the file should be copied in
|
|
restartable mode; i.e., progress of the copy should be tracked in
|
|
the target file in case the copy fails for some reason. It can
|
|
then be restarted at a later date.
|
|
|
|
Return Value:
|
|
|
|
TRUE - The operation was successful.
|
|
|
|
FALSE/NULL - The operation failed. Extended error status is available
|
|
using GetLastError.
|
|
|
|
*/
|
|
|
|
{
|
|
HANDLE DestFile = INVALID_HANDLE_VALUE;
|
|
HANDLE SourceFile = INVALID_HANDLE_VALUE;
|
|
BOOL b;
|
|
|
|
try
|
|
{
|
|
b = BasepCopyFileExW(
|
|
lpExistingFileName,
|
|
lpNewFileName,
|
|
lpProgressRoutine OPTIONAL,
|
|
lpData OPTIONAL,
|
|
pbCancel OPTIONAL,
|
|
dwCopyFlags,
|
|
0, // PrivCopyFile flags
|
|
&DestFile,
|
|
&SourceFile
|
|
);
|
|
|
|
}
|
|
finally
|
|
{
|
|
if (DestFile != INVALID_HANDLE_VALUE) {
|
|
CloseHandle( DestFile );
|
|
}
|
|
|
|
if (SourceFile != INVALID_HANDLE_VALUE) {
|
|
CloseHandle( SourceFile );
|
|
}
|
|
}
|
|
|
|
return(b);
|
|
}
|
|
|
|
|
|
|
|
BOOL
|
|
PrivCopyFileExW(
|
|
LPCWSTR lpExistingFileName,
|
|
LPCWSTR lpNewFileName,
|
|
LPPROGRESS_ROUTINE lpProgressRoutine OPTIONAL,
|
|
LPVOID lpData OPTIONAL,
|
|
LPBOOL pbCancel OPTIONAL,
|
|
DWORD dwCopyFlags
|
|
)
|
|
|
|
/*
|
|
|
|
Routine Description:
|
|
|
|
A file, its extended attributes, alternate data streams, and any other
|
|
attributes can be copied using CopyFileEx. CopyFileEx also provides
|
|
callbacks and cancellability.
|
|
|
|
Arguments:
|
|
|
|
lpExistingFileName - Supplies the name of an existing file that is to be
|
|
copied.
|
|
|
|
lpNewFileName - Supplies the name where a copy of the existing
|
|
files data and attributes are to be stored.
|
|
|
|
lpProgressRoutine - Optionally supplies the address of a callback routine
|
|
to be called as the copy operation progresses.
|
|
|
|
lpData - Optionally supplies a context to be passed to the progress callback
|
|
routine.
|
|
|
|
lpCancel - Optionally supplies the address of a boolean to be set to TRUE
|
|
if the caller would like the copy to abort.
|
|
|
|
dwCopyFlags - Specifies flags that modify how the file is to be copied:
|
|
|
|
COPY_FILE_FAIL_IF_EXISTS - Indicates that the copy operation should
|
|
fail immediately if the target file already exists.
|
|
|
|
COPY_FILE_RESTARTABLE - Indicates that the file should be copied in
|
|
restartable mode; i.e., progress of the copy should be tracked in
|
|
the target file in case the copy fails for some reason. It can
|
|
then be restarted at a later date.
|
|
|
|
Return Value:
|
|
|
|
TRUE - The operation was successful.
|
|
|
|
FALSE/NULL - The operation failed. Extended error status is available
|
|
using GetLastError.
|
|
|
|
*/
|
|
|
|
{
|
|
HANDLE DestFile = INVALID_HANDLE_VALUE;
|
|
HANDLE SourceFile = INVALID_HANDLE_VALUE;
|
|
BOOL b;
|
|
|
|
if( (dwCopyFlags & COPY_FILE_FAIL_IF_EXISTS) &&
|
|
(dwCopyFlags & PRIVCOPY_FILE_SUPERSEDE) ) {
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return( FALSE );
|
|
}
|
|
|
|
try
|
|
{
|
|
b = BasepCopyFileExW(
|
|
lpExistingFileName,
|
|
lpNewFileName,
|
|
lpProgressRoutine OPTIONAL,
|
|
lpData OPTIONAL,
|
|
pbCancel OPTIONAL,
|
|
dwCopyFlags & COPY_FILE_VALID_FLAGS, // Copy flags
|
|
dwCopyFlags & ~COPY_FILE_VALID_FLAGS, // Priv copy flags
|
|
&DestFile,
|
|
&SourceFile
|
|
);
|
|
|
|
}
|
|
finally
|
|
{
|
|
if (DestFile != INVALID_HANDLE_VALUE) {
|
|
CloseHandle( DestFile );
|
|
}
|
|
|
|
if (SourceFile != INVALID_HANDLE_VALUE) {
|
|
CloseHandle( SourceFile );
|
|
}
|
|
}
|
|
|
|
return(b);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
DWORD
|
|
BasepChecksum(
|
|
PUSHORT Source,
|
|
ULONG Length
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Compute a partial checksum on a structure.
|
|
|
|
Arguments:
|
|
|
|
Source - Supplies a pointer to the array of words for which the
|
|
checksum is computed.
|
|
|
|
Length - Supplies the length of the array in words.
|
|
|
|
Return Value:
|
|
|
|
The computed checksum value is returned as the function value.
|
|
|
|
--*/
|
|
|
|
{
|
|
|
|
ULONG PartialSum = 0;
|
|
|
|
//
|
|
// Compute the word wise checksum allowing carries to occur into the
|
|
// high order half of the checksum longword.
|
|
//
|
|
|
|
while (Length--) {
|
|
PartialSum += *Source++;
|
|
PartialSum = (PartialSum >> 16) + (PartialSum & 0xffff);
|
|
}
|
|
|
|
//
|
|
// Fold final carry into a single word result and return the resultant
|
|
// value.
|
|
//
|
|
|
|
return (((PartialSum >> 16) + PartialSum) & 0xffff);
|
|
}
|
|
|
|
BOOL
|
|
BasepRemoteFile(
|
|
HANDLE SourceFile,
|
|
HANDLE DestinationFile
|
|
)
|
|
|
|
{
|
|
NTSTATUS Status;
|
|
IO_STATUS_BLOCK IoStatus;
|
|
FILE_FS_DEVICE_INFORMATION DeviceInformation;
|
|
|
|
DeviceInformation.Characteristics = 0;
|
|
Status = NtQueryVolumeInformationFile(
|
|
SourceFile,
|
|
&IoStatus,
|
|
&DeviceInformation,
|
|
sizeof(DeviceInformation),
|
|
FileFsDeviceInformation
|
|
);
|
|
|
|
if ( NT_SUCCESS(Status) &&
|
|
(DeviceInformation.Characteristics & FILE_REMOTE_DEVICE) ) {
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
Status = NtQueryVolumeInformationFile(
|
|
DestinationFile,
|
|
&IoStatus,
|
|
&DeviceInformation,
|
|
sizeof(DeviceInformation),
|
|
FileFsDeviceInformation
|
|
);
|
|
if ( NT_SUCCESS(Status) &&
|
|
DeviceInformation.Characteristics & FILE_REMOTE_DEVICE ) {
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
|
|
DWORD
|
|
WINAPI
|
|
BasepOpenRestartableFile(
|
|
HANDLE hSourceFile,
|
|
LPCWSTR lpNewFileName,
|
|
PHANDLE DestFile,
|
|
DWORD CopyFlags,
|
|
LPRESTART_STATE lpRestartState,
|
|
LARGE_INTEGER *lpFileSize,
|
|
LPCOPYFILE_CONTEXT *lpCopyFileContext,
|
|
DWORD FlagsAndAttributes,
|
|
BOOL OpenAsReparsePoint )
|
|
|
|
{ // BasepRestartCopyFile
|
|
|
|
LPCOPYFILE_CONTEXT Context = *lpCopyFileContext;
|
|
OBJECT_ATTRIBUTES ObjectAttributes;
|
|
UNICODE_STRING UnicodeString;
|
|
HANDLE OverwriteHandle;
|
|
IO_STATUS_BLOCK IoStatus;
|
|
RESTART_STATE RestartState;
|
|
DWORD b = TRUE;
|
|
ULONG BytesRead = 0;
|
|
|
|
|
|
try {
|
|
|
|
//
|
|
// Note that setting the sequential scan flag is an optimization
|
|
// here that works because of the way that the Cache Manager on
|
|
// the target works vis-a-vis unmapping segments of the file
|
|
// behind write operations. This eventually allows the restart
|
|
// section and the end of the file to both be mapped, which is
|
|
// the desired result.
|
|
//
|
|
// Inhibit reparse behavior when appropriate.
|
|
//
|
|
|
|
FlagsAndAttributes |= FILE_FLAG_SEQUENTIAL_SCAN;
|
|
|
|
if ( OpenAsReparsePoint ) {
|
|
//
|
|
// The target has to be opened as reparse point. If
|
|
// this fails the source is to be closed and re-opened
|
|
// without inhibiting the reparse point behavior.
|
|
//
|
|
|
|
FlagsAndAttributes |= FILE_FLAG_OPEN_REPARSE_POINT;
|
|
}
|
|
|
|
*DestFile = CreateFileW(
|
|
lpNewFileName,
|
|
GENERIC_READ | GENERIC_WRITE | DELETE,
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE,
|
|
NULL,
|
|
OPEN_EXISTING,
|
|
FlagsAndAttributes,
|
|
hSourceFile
|
|
);
|
|
|
|
if( *DestFile == INVALID_HANDLE_VALUE ) {
|
|
|
|
// Caller should attempt to create/overwrite the dest file
|
|
b = TRUE;
|
|
leave;
|
|
}
|
|
|
|
//
|
|
// The target file already exists, so determine whether
|
|
// a restartable copy was already proceeding. If so,
|
|
// then continue; else, check to see whether or not
|
|
// the target file can be replaced. If not, bail with
|
|
// an error, otherwise simply overwrite the output file.
|
|
//
|
|
|
|
b = ReadFile(
|
|
*DestFile,
|
|
&RestartState,
|
|
sizeof(RESTART_STATE),
|
|
&BytesRead,
|
|
NULL
|
|
);
|
|
if ( !b || BytesRead != sizeof(RESTART_STATE) ) {
|
|
|
|
//
|
|
// The file could not be read, or there were not
|
|
// enough bytes to contain a restart record. In
|
|
// either case, if the output file cannot be
|
|
// replaced, simply return an error now.
|
|
//
|
|
|
|
if ( CopyFlags & COPY_FILE_FAIL_IF_EXISTS ) {
|
|
SetLastError( ERROR_ALREADY_EXISTS );
|
|
b = FALSE; // Fatal error
|
|
leave;
|
|
}
|
|
|
|
// The caller should create/overwrite the dest file.
|
|
b = TRUE;
|
|
CloseHandle( *DestFile );
|
|
*DestFile = INVALID_HANDLE_VALUE;
|
|
leave;
|
|
|
|
}
|
|
|
|
//
|
|
// Check the contents of the restart state just
|
|
// read against the known contents of what would
|
|
// be there if this were the same copy operation.
|
|
//
|
|
|
|
if ( RestartState.Type != 0x7a9b ||
|
|
RestartState.Size != sizeof(RESTART_STATE) ||
|
|
RestartState.FileSize.QuadPart != lpRestartState->FileSize.QuadPart ||
|
|
RestartState.EndOfFile.QuadPart != lpRestartState->EndOfFile.QuadPart ||
|
|
RestartState.NumberOfStreams != lpRestartState->NumberOfStreams ||
|
|
RestartState.CreationTime.QuadPart != lpRestartState->CreationTime.QuadPart ||
|
|
RestartState.WriteTime.QuadPart != lpRestartState->WriteTime.QuadPart ||
|
|
RestartState.Checksum != BasepChecksum((PUSHORT)&RestartState,FIELD_OFFSET(RESTART_STATE,Checksum) >> 1) ) {
|
|
|
|
if ( CopyFlags & COPY_FILE_FAIL_IF_EXISTS ) {
|
|
b = FALSE; // Fatal error
|
|
SetLastError( ERROR_ALREADY_EXISTS );
|
|
leave;
|
|
}
|
|
|
|
// The caller should create/overwrite the dest file.
|
|
b = TRUE;
|
|
CloseHandle( *DestFile );
|
|
*DestFile = INVALID_HANDLE_VALUE;
|
|
leave;
|
|
|
|
}
|
|
|
|
//
|
|
// A valid restart state has been found. Copy
|
|
// the appropriate values into the internal
|
|
// restart state so the operation can continue
|
|
// from there.
|
|
//
|
|
|
|
lpRestartState->CurrentStream = RestartState.CurrentStream;
|
|
lpRestartState->LastKnownGoodOffset.QuadPart = RestartState.LastKnownGoodOffset.QuadPart;
|
|
if ( !RestartState.CurrentStream ) {
|
|
|
|
// We were in the middle of copying the unnamed data stream.
|
|
|
|
if ( Context ) {
|
|
Context->TotalBytesTransferred.QuadPart = RestartState.LastKnownGoodOffset.QuadPart;
|
|
}
|
|
|
|
// We'll leave the handle in *DestFile, and the caller and pick up the
|
|
// copy of this stream.
|
|
|
|
b = TRUE;
|
|
|
|
} else {
|
|
|
|
// We were in the middle of copying a named data stream.
|
|
|
|
if ( Context ) {
|
|
ULONG ReturnCode;
|
|
|
|
Context->TotalBytesTransferred.QuadPart = lpFileSize->QuadPart;
|
|
Context->dwStreamNumber = RestartState.CurrentStream;
|
|
|
|
if ( Context->lpProgressRoutine ) {
|
|
ReturnCode = Context->lpProgressRoutine(
|
|
Context->TotalFileSize,
|
|
Context->TotalBytesTransferred,
|
|
*lpFileSize,
|
|
Context->TotalBytesTransferred,
|
|
1,
|
|
CALLBACK_STREAM_SWITCH,
|
|
hSourceFile,
|
|
*DestFile,
|
|
Context->lpData
|
|
);
|
|
} else {
|
|
ReturnCode = PROGRESS_CONTINUE;
|
|
}
|
|
|
|
if ( ReturnCode == PROGRESS_CANCEL ||
|
|
(Context->lpCancel && *Context->lpCancel) ) {
|
|
BaseMarkFileForDelete(
|
|
*DestFile,
|
|
0
|
|
);
|
|
BaseSetLastNTError(STATUS_REQUEST_ABORTED);
|
|
b = FALSE;
|
|
leave;
|
|
}
|
|
|
|
if ( ReturnCode == PROGRESS_STOP ) {
|
|
BaseSetLastNTError(STATUS_REQUEST_ABORTED);
|
|
b = FALSE;
|
|
leave;
|
|
}
|
|
|
|
if ( ReturnCode == PROGRESS_QUIET ) {
|
|
Context = NULL;
|
|
*lpCopyFileContext = NULL;
|
|
}
|
|
}
|
|
|
|
b = SUCCESS_RETURNED_STATE;
|
|
|
|
} // if ( !RestartState.CurrentStream ) ... else
|
|
}
|
|
finally {
|
|
|
|
if( b == FALSE &&
|
|
*DestFile != INVALID_HANDLE_VALUE ) {
|
|
CloseHandle( *DestFile );
|
|
*DestFile = INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
|
|
}
|
|
|
|
return( b );
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
BOOL
|
|
WINAPI
|
|
BasepCopyCompression( HANDLE hSourceFile,
|
|
HANDLE DestFile,
|
|
DWORD SourceFileAttributes,
|
|
DWORD DestFileAttributes,
|
|
DWORD DestFileFsAttributes,
|
|
DWORD CopyFlags,
|
|
LPCOPYFILE_CONTEXT *lpCopyFileContext )
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This is an internal routine that copies the compression state during
|
|
a copyfile. If the source is compressed, that same compression
|
|
algorithm is copied to the dest. If that fails, an attempt is made
|
|
to set the default compression. Depending on the copy flags, it
|
|
may alternatively be necessary to decompress the destination.
|
|
|
|
|
|
Arguments:
|
|
|
|
hSourceFile - Provides a handle to the source file.
|
|
|
|
DestFile - Provides a handle to the destination file.
|
|
|
|
SourceFileAttributes - FileBasicInformation attributes queried from the
|
|
source file.
|
|
|
|
DestFileAttributes - FileBasicInformation attributes for the current
|
|
state of the destination file.
|
|
|
|
DestFileFsAttributes - FileFsAttributeInformation.FileSystemAttributes
|
|
for the file system of the dest file.
|
|
|
|
CopyFlags - Provides flags that modify how the copy is to proceed. See
|
|
CopyFileEx for details.
|
|
|
|
lpCopyFileContext - Provides a pointer to a pointer to the context
|
|
information to track callbacks, file sizes, etc. across streams during
|
|
the copy operation.
|
|
|
|
|
|
Return Value:
|
|
|
|
TRUE - The operation was successful.
|
|
|
|
FALSE/NULL - The operation failed. Extended error status is available
|
|
using GetLastError. The DestFile has already been marked
|
|
for delete.
|
|
|
|
--*/
|
|
|
|
{ // BasepCopyCompression
|
|
|
|
IO_STATUS_BLOCK IoStatus;
|
|
NTSTATUS Status = STATUS_SUCCESS;
|
|
LPCOPYFILE_CONTEXT Context = *lpCopyFileContext;
|
|
BOOL SuccessReturn = FALSE;
|
|
BOOL Canceled = FALSE;
|
|
|
|
try
|
|
{
|
|
if( !(SourceFileAttributes & FILE_ATTRIBUTE_COMPRESSED) ) {
|
|
|
|
// The source file is not compressed. If necessary, decompress
|
|
// the target.
|
|
|
|
if( (DestFileAttributes & FILE_ATTRIBUTE_COMPRESSED) &&
|
|
(CopyFlags & PRIVCOPY_FILE_SUPERSEDE) ) {
|
|
|
|
// The source isn't compressed, but the dest is, and we don't
|
|
// want to acquire attributes from the dest. So we need to manually
|
|
// decompress it.
|
|
|
|
ULONG CompressionType = COMPRESSION_FORMAT_NONE;
|
|
|
|
Status = NtFsControlFile(
|
|
DestFile,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
&IoStatus,
|
|
FSCTL_SET_COMPRESSION,
|
|
&CompressionType, // Input buffer
|
|
sizeof(CompressionType), // Input buffer length
|
|
NULL, // Output buffer
|
|
0 // Output buffer length
|
|
);
|
|
if( !NT_SUCCESS(Status) ) {
|
|
// See if it's OK to ignore the error
|
|
if( !BasepCopyFileCallback( TRUE, // Continue by default
|
|
RtlNtStatusToDosError(Status),
|
|
Context,
|
|
NULL,
|
|
PRIVCALLBACK_COMPRESSION_NOT_SUPPORTED,
|
|
hSourceFile,
|
|
DestFile,
|
|
&Canceled )) {
|
|
|
|
|
|
BaseMarkFileForDelete( DestFile, 0 );
|
|
BaseSetLastNTError( Status );
|
|
leave;
|
|
} else {
|
|
Status = STATUS_SUCCESS;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
} // if( !(SourceFileAttributes & FILE_ATTRIBUTE_COMPRESSED) )
|
|
|
|
else {
|
|
|
|
// The source file is compressed. Does the target filesystem
|
|
// even support compression?
|
|
|
|
if( !(FILE_FILE_COMPRESSION & DestFileFsAttributes) ) {
|
|
|
|
// No, it won't be compressable. See if it's OK to continue.
|
|
|
|
if( !BasepCopyFileCallback( TRUE, // Continue by default
|
|
ERROR_NOT_SUPPORTED,
|
|
Context,
|
|
NULL,
|
|
PRIVCALLBACK_COMPRESSION_NOT_SUPPORTED,
|
|
hSourceFile,
|
|
DestFile,
|
|
&Canceled )) {
|
|
|
|
if( Canceled ) {
|
|
BaseMarkFileForDelete(
|
|
DestFile,
|
|
0 );
|
|
}
|
|
leave;
|
|
}
|
|
} // if( !(FILE_FILE_COMPRESSION & *DestFileFsAttributes) )
|
|
|
|
else {
|
|
|
|
// Target volume supports compression. Compress the target file if
|
|
// it's not already.
|
|
|
|
if( !(DestFileAttributes & FILE_ATTRIBUTE_COMPRESSED) ) {
|
|
|
|
USHORT CompressionType;
|
|
|
|
// Get the source file's compression type
|
|
|
|
Status = NtFsControlFile(
|
|
hSourceFile,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
&IoStatus,
|
|
FSCTL_GET_COMPRESSION,
|
|
NULL, // Input buffer
|
|
0, // Input buffer length
|
|
&CompressionType, // Output buffer
|
|
sizeof(CompressionType) // Output buffer length
|
|
);
|
|
if( NT_SUCCESS(Status) ) {
|
|
|
|
// Set the compression type on the target
|
|
|
|
Status = NtFsControlFile(
|
|
DestFile,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
&IoStatus,
|
|
FSCTL_SET_COMPRESSION,
|
|
&CompressionType, // Input buffer
|
|
sizeof(CompressionType), // Input buffer length
|
|
NULL, // Output buffer
|
|
0 // Output buffer length
|
|
);
|
|
|
|
// If that didn't work, try the default compression
|
|
// format (maybe we're copying from uplevel to downlevel).
|
|
|
|
if( !NT_SUCCESS(Status) &&
|
|
COMPRESSION_FORMAT_DEFAULT != CompressionType ) {
|
|
|
|
CompressionType = COMPRESSION_FORMAT_DEFAULT;
|
|
Status = NtFsControlFile(
|
|
DestFile,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
&IoStatus,
|
|
FSCTL_SET_COMPRESSION,
|
|
&CompressionType, // Input buffer
|
|
sizeof(CompressionType), // Input buffer length
|
|
NULL, // Output buffer
|
|
0 // Output buffer length
|
|
);
|
|
}
|
|
} // FSCTL_GET_COMPRESSION ... if( NT_SUCCESS(Status) )
|
|
|
|
// If something went wrong and we couldn't compress it, there's a good
|
|
// chance that the caller doesn't want this to be fatal. Ask and find
|
|
// out.
|
|
|
|
if( !NT_SUCCESS(Status) ) {
|
|
BOOL Canceled = FALSE;
|
|
|
|
if( !BasepCopyFileCallback( TRUE, // Continue by default
|
|
RtlNtStatusToDosError(Status),
|
|
Context,
|
|
NULL,
|
|
PRIVCALLBACK_COMPRESSION_FAILED,
|
|
hSourceFile,
|
|
DestFile,
|
|
&Canceled )) {
|
|
if( Canceled ) {
|
|
BaseMarkFileForDelete(
|
|
DestFile,
|
|
0 );
|
|
}
|
|
leave;
|
|
}
|
|
}
|
|
} // if( !(DestFileAttributes & FILE_FILE_COMPRESSION) )
|
|
} // if( !(FILE_FILE_COMPRESSION & *DestFileFsAttributes) )
|
|
} // if( !(SourceFileAttributes & FILE_ATTRIBUTE_COMPRESSED) ) ... else
|
|
|
|
SuccessReturn = TRUE;
|
|
}
|
|
finally
|
|
{
|
|
}
|
|
|
|
return( SuccessReturn );
|
|
}
|
|
|
|
|
|
|
|
NTSTATUS
|
|
BasepCreateDispositionToWin32( DWORD CreateDisposition, DWORD *Win32CreateDisposition )
|
|
|
|
/*++
|
|
Routine Description:
|
|
|
|
This is an internal routine used by BaseCopyStream. It is used to translate
|
|
from NT API CreateDisposition flags to Win32 CreateDisposition flags (this was
|
|
added in order to use the NT CreateDisposition in a call to DuplicateEncryptionInformation).
|
|
|
|
This routine does the inverse of the Win32->NT mapping in CreateFile, except that there is
|
|
no way to obtain TRUNCATE_EXISTING from an NT flag. The FILE_SUPERSEDE and FILE_OVERWRITE
|
|
flags are not supported by this routine.
|
|
|
|
Arguments:
|
|
|
|
CreateDisposition - The NT CreateDisposition flags.
|
|
|
|
Returns:
|
|
|
|
STATUS_INVALID_PARAMETER if an unsupported NT flag is passed in.
|
|
STATUS_SUCCESS otherwise.
|
|
|
|
++*/
|
|
|
|
|
|
{
|
|
switch ( CreateDisposition ) {
|
|
|
|
case FILE_CREATE :
|
|
*Win32CreateDisposition = CREATE_NEW;
|
|
break;
|
|
case FILE_OVERWRITE_IF:
|
|
*Win32CreateDisposition = CREATE_ALWAYS;
|
|
break;
|
|
case FILE_OPEN:
|
|
*Win32CreateDisposition = OPEN_EXISTING;
|
|
break;
|
|
case FILE_OPEN_IF:
|
|
*Win32CreateDisposition = OPEN_ALWAYS;
|
|
break;
|
|
default :
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
BOOL
|
|
CheckAllowDecryptedRemoteDestinationPolicy()
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine is used by BasepCopyEncryption (part of CopyFile), when
|
|
an attempt has been made to copy an encrypted file to a destination that
|
|
for some reason can't support encryption (e.g. it's FAT, not trusted for
|
|
delegation, NT4, etc). By default, copyfile fails for this scenario. The
|
|
way to override that default is to pass the COPY_FILE_ALLOW_DECRYPTED_DESTINATION
|
|
flag to CopyFile. The other way to override that default (if you can't update
|
|
your copy utilities to use the new flag), is to set the
|
|
CopyFileAllowDecryptedRemoteDestination system policy. This routine checks that policy.
|
|
|
|
This routine caches the result of the registry check per process. So an update
|
|
to the policy may require a reboot to take effect in existing processes.
|
|
|
|
Arguments:
|
|
|
|
None
|
|
|
|
Return Value:
|
|
|
|
TRUE - The decrypted destination is allowed
|
|
|
|
FALSE - The destination may not be left decrypted
|
|
|
|
--*/
|
|
|
|
|
|
{
|
|
// Static flags indicating if we've already been called once, and if
|
|
// so what the answer was. These are static so that we need to do the registry
|
|
// call only once per process.
|
|
|
|
static BOOL Allowed = FALSE;
|
|
static BOOL AlreadyChecked = FALSE;
|
|
|
|
NTSTATUS Status;
|
|
HANDLE Key;
|
|
|
|
BYTE QueryBuffer[sizeof(KEY_VALUE_PARTIAL_INFORMATION) + sizeof(DWORD)];
|
|
PKEY_VALUE_PARTIAL_INFORMATION KeyValueInfo =
|
|
(PKEY_VALUE_PARTIAL_INFORMATION) QueryBuffer;
|
|
|
|
ULONG ActualSize;
|
|
|
|
const static UNICODE_STRING KeyName =
|
|
RTL_CONSTANT_STRING( L"\\Registry\\Machine\\Software\\Policies\\Microsoft\\Windows\\System" );
|
|
|
|
const static OBJECT_ATTRIBUTES ObjectAttributes =
|
|
RTL_CONSTANT_OBJECT_ATTRIBUTES(&KeyName, OBJ_CASE_INSENSITIVE);
|
|
|
|
const static UNICODE_STRING ValueName =
|
|
RTL_CONSTANT_STRING( L"CopyFileAllowDecryptedRemoteDestination" );
|
|
|
|
|
|
// Check to see if we've already been called once in this process. If so,
|
|
// return the value that was calculated then (thus this process needs a reboot
|
|
// to reflect a change to this policy). Technically there's a race condition here,
|
|
// but assuming the registry isn't being updated during the call, each call to this
|
|
// routine will get the same answer anyway.
|
|
|
|
if( AlreadyChecked )
|
|
return Allowed;
|
|
|
|
// We need to do the check.
|
|
|
|
// Try to open the system policy key.
|
|
// If it doesn't exist, then we'll just fall through and return false.
|
|
|
|
Status = NtOpenKey( &Key,
|
|
KEY_QUERY_VALUE,
|
|
(POBJECT_ATTRIBUTES) &ObjectAttributes);
|
|
|
|
if (NT_SUCCESS(Status)) {
|
|
|
|
// We have the system policy key. Now try to open the value. If it
|
|
// doesn't exist, we'll just fall through, and return false.
|
|
|
|
Status = NtQueryValueKey(
|
|
Key,
|
|
(PUNICODE_STRING) &ValueName,
|
|
KeyValuePartialInformation,
|
|
KeyValueInfo,
|
|
sizeof(QueryBuffer),
|
|
&ActualSize);
|
|
|
|
if (NT_SUCCESS(Status)) {
|
|
|
|
// The value exists. If it's the right shape and value, then
|
|
// we'll allow the decrypted destination.
|
|
|
|
if( KeyValueInfo->Type == REG_DWORD &&
|
|
KeyValueInfo->DataLength == sizeof(DWORD) &&
|
|
*((PDWORD) KeyValueInfo->Data) == 1) {
|
|
|
|
Allowed = TRUE;
|
|
}
|
|
}
|
|
|
|
NtClose( Key );
|
|
}
|
|
|
|
// Update the static so that we don't execute this code again.
|
|
AlreadyChecked = TRUE;
|
|
|
|
return Allowed;
|
|
}
|
|
|
|
|
|
typedef BOOL (WINAPI *ENCRYPTFILEWPTR)(LPCWSTR);
|
|
typedef BOOL (WINAPI *DECRYPTFILEWPTR)(LPCWSTR, DWORD);
|
|
|
|
BOOL
|
|
WINAPI
|
|
BasepCopyEncryption( HANDLE hSourceFile,
|
|
LPCWSTR lpNewFileName,
|
|
PHANDLE DestFile,
|
|
POBJECT_ATTRIBUTES Obja,
|
|
DWORD DestFileAccess,
|
|
DWORD DestFileSharing,
|
|
DWORD CreateDisposition,
|
|
DWORD CreateOptions,
|
|
DWORD SourceFileAttributes,
|
|
DWORD SourceFileAttributesMask,
|
|
PDWORD DestFileAttributes,
|
|
DWORD DestFileFsAttributes,
|
|
DWORD CopyFlags,
|
|
LPCOPYFILE_CONTEXT *lpCopyFileContext )
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This is an internal routine that copies the encryption state during
|
|
a copyfile. Depending on the copy flags, it may be necessary to
|
|
decompress the destination. To encrypt/decrypt a file it is necessary
|
|
to close the current handle, encrypt/decrypt, and reopen.
|
|
|
|
Arguments:
|
|
|
|
hSourceFile - Provides a handle to the source file.
|
|
|
|
lpNewFileName - Provides a name for the target file/stream.
|
|
|
|
Obja - ObjectAttributes structure for the destination file.
|
|
|
|
DestFileAccess - ACCESS_MASK to use when opening the dest.
|
|
|
|
DestFileSharing - Sharing options to use when openting the dest.
|
|
|
|
CreateDisposition - Creation/disposition options for opening the dest.
|
|
|
|
SourceFileAttributes - FileBasicInformation attributes queried from the
|
|
source file.
|
|
|
|
SourceFileAttributesMask - the attributes from the source that are intended
|
|
to be set on the dest.
|
|
|
|
DestFileAttributes - FileBasicInformation attributes for the current
|
|
state of the destination file. This value is updated to reflect
|
|
changes to the encryption state of the dest file.
|
|
|
|
DestFileFsAttributes - FileFsAttributeInformation.FileSystemAttributes
|
|
for the file system of the dest file.
|
|
|
|
CopyFlags - Provides flags that modify how the copy is to proceed. See
|
|
CopyFileEx for details.
|
|
|
|
lpCopyFileContext - Provides a pointer to a pointer to the context
|
|
information to track callbacks, file sizes, etc. across streams during
|
|
the copy operation.
|
|
|
|
|
|
Return Value:
|
|
|
|
TRUE - The operation was successful.
|
|
|
|
FALSE/NULL - The operation failed. Extended error status is available
|
|
using GetLastError. The DestFile has already been marked
|
|
for delete.
|
|
|
|
--*/
|
|
|
|
{ // BasepCopyEncryption
|
|
|
|
NTSTATUS Status = 0;
|
|
BOOL SuccessReturn = FALSE;
|
|
BOOL EncryptFile = FALSE;
|
|
BOOL DecryptFile = FALSE;
|
|
HANDLE Advapi32 = NULL;
|
|
BOOL RestoreReadOnly = FALSE;
|
|
ENCRYPTFILEWPTR EncryptFileWPtr = NULL;
|
|
DECRYPTFILEWPTR DecryptFileWPtr = NULL;
|
|
IO_STATUS_BLOCK IoStatusBlock;
|
|
LPCOPYFILE_CONTEXT Context = *lpCopyFileContext;
|
|
FILE_BASIC_INFORMATION FileBasicInformationData;
|
|
|
|
try
|
|
{
|
|
// Check to see if we need to do some encryption or decryption,
|
|
// and set EncryptFile/DescryptFile bools if set.
|
|
|
|
if( (SourceFileAttributes & FILE_ATTRIBUTE_ENCRYPTED) &&
|
|
(SourceFileAttributesMask & FILE_ATTRIBUTE_ENCRYPTED) &&
|
|
!(*DestFileAttributes & FILE_ATTRIBUTE_ENCRYPTED) ) {
|
|
|
|
// We tried to copy over encryption, but it didn't stick:
|
|
// * This may be a system file, encryption is not supported on
|
|
// system files.
|
|
// * If this is a non-directory file, then encryption is not
|
|
// supported on the target file system.
|
|
// * If this is a directory file, then we must try to encrypt
|
|
// it manually (since we opened it, rather than creating it).
|
|
// It still may not be possible but we'll have to try to
|
|
// find out.
|
|
|
|
if( (SourceFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
|
|
&&
|
|
!(*DestFileAttributes & FILE_ATTRIBUTE_SYSTEM) ) {
|
|
EncryptFile = TRUE;
|
|
}
|
|
|
|
} else if( !(SourceFileAttributes & FILE_ATTRIBUTE_ENCRYPTED) &&
|
|
(*DestFileAttributes & FILE_ATTRIBUTE_ENCRYPTED) &&
|
|
(CopyFlags & PRIVCOPY_FILE_SUPERSEDE) ) {
|
|
|
|
// The source is decrypted, the destination was encrypted, and the
|
|
// caller specified that the source should be copied as-is. So
|
|
// we must manually decrypt the destination. This can happen if
|
|
// the dest file already existed and was encrypted.
|
|
|
|
DecryptFile = TRUE;
|
|
}
|
|
|
|
|
|
// If we decided above to either encrypt or decrypt, then we have
|
|
// more work to do.
|
|
|
|
if( DecryptFile || EncryptFile ) {
|
|
|
|
// If the destination file is read-only, we have to take it off
|
|
// until we do the encrypt/decrypt (and restore it later).
|
|
|
|
if( *DestFileAttributes & FILE_ATTRIBUTE_READONLY ) {
|
|
|
|
RestoreReadOnly = TRUE;
|
|
RtlZeroMemory(&FileBasicInformationData, sizeof(FileBasicInformationData));
|
|
FileBasicInformationData.FileAttributes = (*DestFileAttributes) & ~FILE_ATTRIBUTE_READONLY;
|
|
|
|
Status = NtSetInformationFile(
|
|
*DestFile,
|
|
&IoStatusBlock,
|
|
&FileBasicInformationData,
|
|
sizeof(FileBasicInformationData),
|
|
FileBasicInformation
|
|
);
|
|
if( !NT_SUCCESS(Status) ) {
|
|
BaseMarkFileForDelete( *DestFile, 0 );
|
|
BaseSetLastNTError(Status);
|
|
leave;
|
|
}
|
|
}
|
|
|
|
// Close the file so that we can call EncryptFile/DecryptFile
|
|
|
|
NtClose( *DestFile );
|
|
*DestFile = INVALID_HANDLE_VALUE;
|
|
|
|
// Load the EncryptFile/DecryptFile API, and make the call
|
|
|
|
Advapi32 = LoadLibraryW(AdvapiDllString);
|
|
if( Advapi32 == NULL ) {
|
|
leave;
|
|
}
|
|
|
|
if( EncryptFile ) {
|
|
EncryptFileWPtr = (ENCRYPTFILEWPTR)GetProcAddress(Advapi32, "EncryptFileW");
|
|
if( EncryptFileWPtr == NULL ) {
|
|
leave;
|
|
}
|
|
|
|
if( EncryptFileWPtr(lpNewFileName) )
|
|
*DestFileAttributes |= FILE_ATTRIBUTE_ENCRYPTED;
|
|
} else {
|
|
DecryptFileWPtr = (DECRYPTFILEWPTR)GetProcAddress(Advapi32, "DecryptFileW");
|
|
if( DecryptFileWPtr == NULL ) {
|
|
leave;
|
|
}
|
|
|
|
if( DecryptFileWPtr(lpNewFileName, 0) )
|
|
*DestFileAttributes &= ~FILE_ATTRIBUTE_ENCRYPTED;
|
|
}
|
|
|
|
// The encrypt/decrypt call was successful, so we can reopen the file.
|
|
|
|
Status = NtCreateFile(
|
|
DestFile,
|
|
DestFileAccess,
|
|
Obja,
|
|
&IoStatusBlock,
|
|
NULL,
|
|
SourceFileAttributes & FILE_ATTRIBUTE_VALID_FLAGS & SourceFileAttributesMask,
|
|
DestFileSharing,
|
|
CreateDisposition,
|
|
CreateOptions,
|
|
NULL,
|
|
0
|
|
);
|
|
if( !NT_SUCCESS(Status) ) {
|
|
*DestFile = INVALID_HANDLE_VALUE;
|
|
BaseSetLastNTError(Status);
|
|
leave;
|
|
}
|
|
|
|
// If we took off the read-only bit above, put it back on now.
|
|
|
|
if( RestoreReadOnly ) {
|
|
|
|
FileBasicInformationData.FileAttributes |= FILE_ATTRIBUTE_READONLY;
|
|
|
|
Status = NtSetInformationFile(
|
|
*DestFile,
|
|
&IoStatusBlock,
|
|
&FileBasicInformationData,
|
|
sizeof(FileBasicInformationData),
|
|
FileBasicInformation
|
|
);
|
|
|
|
if( !NT_SUCCESS(Status) ) {
|
|
BaseMarkFileForDelete( *DestFile, 0 );
|
|
BaseSetLastNTError(Status);
|
|
leave;
|
|
}
|
|
}
|
|
} // if( DecryptFile || EncryptFile )
|
|
|
|
// If it's still not encrypted, see if it's OK to leave it that way.
|
|
|
|
if( (SourceFileAttributes & FILE_ATTRIBUTE_ENCRYPTED)
|
|
&& !(*DestFileAttributes & FILE_ATTRIBUTE_ENCRYPTED) ) {
|
|
|
|
// Either there was an encryption problem (e.g. no keys available)
|
|
// or the target just doesn't support encryption. See if it's OK
|
|
// to continue with the copy by checking the CopyFlags, by making
|
|
// a callback, or by checking policy.
|
|
|
|
BOOL Canceled = FALSE;
|
|
DWORD dwCallbackReason = 0;
|
|
LONG lError = ERROR_ENCRYPTION_FAILED;
|
|
|
|
// If the COPY_FILE_ALLOW_DECRYPTED_DESTINATION flag is set, then
|
|
// we can fall through and return success. Otherwise, we need to do some
|
|
// more checking.
|
|
|
|
if( !(CopyFlags & COPY_FILE_ALLOW_DECRYPTED_DESTINATION) ) {
|
|
|
|
// There's a policy in the registry which may be set indicating
|
|
// that we can ignore loss of encryption on network targets.
|
|
// If that's set, and this is a remote destination, then the
|
|
// copy can continue. We check the policy first, because it
|
|
// caches its result. Consequently, in the typical case, we only
|
|
// check the registry once, and we never make the NtQueryVolInfoFile
|
|
// call.
|
|
|
|
if( CheckAllowDecryptedRemoteDestinationPolicy() ) {
|
|
|
|
IO_STATUS_BLOCK IoStatus;
|
|
FILE_FS_DEVICE_INFORMATION DeviceInformation;
|
|
|
|
// See if the destination is remote
|
|
|
|
DeviceInformation.Characteristics = 0;
|
|
Status = NtQueryVolumeInformationFile(
|
|
*DestFile,
|
|
&IoStatus,
|
|
&DeviceInformation,
|
|
sizeof(DeviceInformation),
|
|
FileFsDeviceInformation
|
|
);
|
|
if( NT_SUCCESS(Status) &&
|
|
(DeviceInformation.Characteristics & FILE_REMOTE_DEVICE) )
|
|
{
|
|
// Yes, it's remote, and the policy is set, so
|
|
// it's OK to continue.
|
|
|
|
SuccessReturn = TRUE;
|
|
}
|
|
} // if( CheckAllowDecryptedRemoteDestinationPolicy() )
|
|
|
|
// If that didn't work, do we have a callback on which we can
|
|
// check for permission to drop? We checked the policy first,
|
|
// because if it allows the copy, we needn't even call the
|
|
// callback.
|
|
|
|
if( !SuccessReturn
|
|
&& Context != NULL
|
|
&& Context->lpProgressRoutine != NULL
|
|
&& (CopyFlags & PRIVCOPY_FILE_METADATA) ) {
|
|
|
|
// Yes, we have an applicable callback.
|
|
|
|
// Figure out what the explanation (dwCallbackReason)
|
|
// is for the problem.
|
|
|
|
if( DestFileFsAttributes & FILE_SUPPORTS_ENCRYPTION ) {
|
|
|
|
if( !(SourceFileAttributesMask & FILE_ATTRIBUTE_ENCRYPTED) ) {
|
|
// We opened the file with encryption turned off, so we must
|
|
// have gotten an access-denied on the first try.
|
|
|
|
dwCallbackReason = PRIVCALLBACK_ENCRYPTION_FAILED;
|
|
}
|
|
|
|
else if( *DestFileAttributes & FILE_ATTRIBUTE_SYSTEM )
|
|
dwCallbackReason = PRIVCALLBACK_CANT_ENCRYPT_SYSTEM_FILE;
|
|
else
|
|
dwCallbackReason = PRIVCALLBACK_ENCRYPTION_FAILED;
|
|
}
|
|
else
|
|
dwCallbackReason = PRIVCALLBACK_ENCRYPTION_NOT_SUPPORTED;
|
|
|
|
// Make the callback.
|
|
|
|
if( BasepCopyFileCallback( FALSE, // Fail by default
|
|
lError,
|
|
Context,
|
|
NULL,
|
|
dwCallbackReason,
|
|
hSourceFile,
|
|
*DestFile,
|
|
&Canceled )) {
|
|
// We've been given permission to drop the encryption
|
|
SuccessReturn = TRUE;
|
|
}
|
|
} // if( Context != NULL
|
|
|
|
|
|
// We checked everything, and nothing allows us to contine,
|
|
// so fail the call.
|
|
|
|
if( !SuccessReturn ) {
|
|
BaseMarkFileForDelete(
|
|
*DestFile,
|
|
0 );
|
|
SetLastError( lError );
|
|
leave;
|
|
}
|
|
|
|
} // if( !(CopyFlags & COPY_FILE_ALLOW_DECRYPTED_DESTINATION) )
|
|
} // if( (SourceFileAttributes & FILE_ATTRIBUTE_ENCRYPTED)
|
|
|
|
SuccessReturn = TRUE;
|
|
|
|
}
|
|
finally
|
|
{
|
|
if (Advapi32 != NULL) {
|
|
FreeLibrary( Advapi32 );
|
|
}
|
|
}
|
|
|
|
return( SuccessReturn );
|
|
}
|
|
|
|
|
|
DWORD
|
|
WINAPI
|
|
BaseCopyStream(
|
|
OPTIONAL LPCWSTR lpExistingFileName,
|
|
HANDLE hSourceFile,
|
|
ACCESS_MASK SourceFileAccess OPTIONAL,
|
|
LPCWSTR lpNewFileName,
|
|
HANDLE hTargetFile OPTIONAL,
|
|
LARGE_INTEGER *lpFileSize,
|
|
LPDWORD lpCopyFlags,
|
|
LPHANDLE lpDestFile,
|
|
LPDWORD lpCopySize,
|
|
LPCOPYFILE_CONTEXT *lpCopyFileContext,
|
|
LPRESTART_STATE lpRestartState OPTIONAL,
|
|
BOOL OpenFileAsReparsePoint,
|
|
DWORD dwReparseTag,
|
|
PDWORD DestFileFsAttributes
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This is an internal routine that copies an entire file (default data stream
|
|
only), or a single stream of a file. If the hTargetFile parameter is
|
|
present, then only a single stream of the output file is copied. Otherwise,
|
|
the entire file is copied.
|
|
|
|
Arguments:
|
|
|
|
hSourceFile - Provides a handle to the source file.
|
|
|
|
SourceFileAccess - The ACCESS_MASK bits used to open the source file handle.
|
|
This variable is only used with the PRIVCOPY_FILE_* flags.
|
|
|
|
lpNewFileName - Provides a name for the target file/stream.
|
|
|
|
hTargetFile - Optionally provides a handle to the target file. If the
|
|
stream being copied is an alternate data stream, then this handle must
|
|
be provided.
|
|
|
|
lpFileSize - Provides the size of the input stream.
|
|
|
|
lpCopyFlags - Provides flags that modify how the copy is to proceed. See
|
|
CopyFileEx for details.
|
|
|
|
lpDestFile - Provides a variable to store the handle to the target file.
|
|
|
|
lpCopySize - Provides variable to store size of copy chunks to be used in
|
|
copying the streams. This is set for the file, and then reused on
|
|
alternate streams.
|
|
|
|
lpCopyFileContext - Provides a pointer to a pointer to the context
|
|
information to track callbacks, file sizes, etc. across streams during
|
|
the copy operation.
|
|
|
|
lpRestartState - Optionally provides storage to maintain restart state
|
|
during the copy operation. This pointer is only valid if the caller
|
|
has specified the COPY_FILE_RESTARTABLE flag in the lpCopyFlags word.
|
|
|
|
OpenFileAsReparsePoint - Flag to indicate whether the target file is to
|
|
be opened as a reparse point or not.
|
|
|
|
DestFileFsAttributes - If hTargetFile is present, provides a location to
|
|
store the destination file's filesystem attributes. If hTargetFile
|
|
is not present, provides those attributes to this routine.
|
|
|
|
Return Value:
|
|
|
|
TRUE - The operation was successful.
|
|
|
|
SUCCESS_RETURNED_STATE - The operation was successful, but extended
|
|
information was returned in the restart state structure.
|
|
|
|
FALSE/NULL - The operation failed. Extended error status is available
|
|
using GetLastError.
|
|
|
|
--*/
|
|
|
|
{ // BaseCopyStream
|
|
|
|
HANDLE DestFile = INVALID_HANDLE_VALUE;
|
|
HANDLE Section;
|
|
NTSTATUS Status;
|
|
PVOID SourceBase, IoDestBase;
|
|
PCHAR SourceBuffer;
|
|
LARGE_INTEGER SectionOffset;
|
|
LARGE_INTEGER BytesWritten;
|
|
SIZE_T BigViewSize;
|
|
ULONG ViewSize;
|
|
ULONG BytesToWrite;
|
|
ULONG BytesRead;
|
|
FILE_BASIC_INFORMATION FileBasicInformationData;
|
|
FILE_END_OF_FILE_INFORMATION EndOfFileInformation;
|
|
IO_STATUS_BLOCK IoStatus;
|
|
LPCOPYFILE_CONTEXT Context = *lpCopyFileContext;
|
|
DWORD ReturnCode;
|
|
DWORD b;
|
|
BOOL Restartable;
|
|
DWORD ReturnValue = FALSE;
|
|
DWORD WriteCount = 0;
|
|
DWORD FlagsAndAttributes;
|
|
DWORD DesiredAccess;
|
|
DWORD DestFileAccess;
|
|
DWORD DestFileSharing;
|
|
DWORD DesiredCreateDisposition;
|
|
DWORD CreateDisposition;
|
|
BOOL Canceled = FALSE;
|
|
DWORD SourceFileAttributes;
|
|
DWORD SourceFileAttributesMask;
|
|
DWORD BlockSize;
|
|
BOOL fSkipBlock;
|
|
UNICODE_STRING DestFileName;
|
|
PVOID DestFileNameBuffer = NULL;
|
|
OBJECT_ATTRIBUTES Obja;
|
|
SECURITY_QUALITY_OF_SERVICE SecurityQualityOfService;
|
|
FILE_EA_INFORMATION EaInfo;
|
|
PFILE_FULL_EA_INFORMATION EaBuffer = NULL;
|
|
ULONG EaSize = 0;
|
|
BOOL EasDropped = FALSE;
|
|
IO_STATUS_BLOCK IoStatusBlock;
|
|
WCHAR SaveStaticUnicodeBuffer[STATIC_UNICODE_BUFFER_LENGTH];
|
|
|
|
|
|
// Default the size of copy chunks
|
|
*lpCopySize = BASE_COPY_FILE_CHUNK;
|
|
|
|
// The lpExistingFileName sits in the TEB buffer, which has a tendency
|
|
// to get trashed (e.g. LoadLibaryW). So use a local buffer.
|
|
|
|
if( lpExistingFileName == NtCurrentTeb()->StaticUnicodeBuffer ) {
|
|
|
|
memcpy( SaveStaticUnicodeBuffer,
|
|
NtCurrentTeb()->StaticUnicodeBuffer,
|
|
STATIC_UNICODE_BUFFER_LENGTH );
|
|
lpExistingFileName = SaveStaticUnicodeBuffer;
|
|
}
|
|
|
|
//
|
|
// Get times and attributes for the file if the entire file is being
|
|
// copied
|
|
//
|
|
|
|
Status = NtQueryInformationFile(
|
|
hSourceFile,
|
|
&IoStatus,
|
|
(PVOID) &FileBasicInformationData,
|
|
sizeof(FileBasicInformationData),
|
|
FileBasicInformation
|
|
);
|
|
|
|
SourceFileAttributes = NT_SUCCESS(Status) ?
|
|
FileBasicInformationData.FileAttributes :
|
|
0;
|
|
|
|
if ( !ARGUMENT_PRESENT(hTargetFile) ) {
|
|
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
BaseSetLastNTError(Status);
|
|
return FALSE;
|
|
}
|
|
} else {
|
|
|
|
//
|
|
// A zero in the file's attributes informs latter DeleteFile that
|
|
// this code does not know what the actual file attributes are so
|
|
// that this code does not actually have to retrieve them for each
|
|
// stream, nor does it have to remember them across streams. The
|
|
// error path will simply get them if needed.
|
|
//
|
|
|
|
FileBasicInformationData.FileAttributes = 0;
|
|
}
|
|
|
|
//
|
|
// We don't allow restartable copies of directory files, because the
|
|
// unnamed data stream is used to store restart context, and directory files
|
|
// don't have an unnamed data stream.
|
|
//
|
|
|
|
Restartable = (*lpCopyFlags & COPY_FILE_RESTARTABLE) != 0;
|
|
if( Restartable && SourceFileAttributes & FILE_ATTRIBUTE_DIRECTORY ) {
|
|
Restartable = FALSE;
|
|
*lpCopyFlags &= ~COPY_FILE_RESTARTABLE;
|
|
}
|
|
|
|
|
|
try {
|
|
|
|
//
|
|
// Create the destination file or alternate data stream
|
|
//
|
|
|
|
SourceBase = NULL;
|
|
IoDestBase = NULL;
|
|
Section = NULL;
|
|
|
|
if ( !ARGUMENT_PRESENT(hTargetFile) ) {
|
|
|
|
ULONG CreateOptions = 0, DesiredCreateOptions = 0;
|
|
BOOL TranslationStatus = FALSE;
|
|
PFILE_FULL_EA_INFORMATION EaBufferToUse = NULL;
|
|
DWORD SourceFileFsAttributes = 0;
|
|
ULONG EaSizeToUse = 0;
|
|
|
|
// We're being called to copy the unnamed stream of the file, and
|
|
// we need to create the file itself.
|
|
|
|
DWORD DestFileAttributes = 0;
|
|
struct {
|
|
FILE_FS_ATTRIBUTE_INFORMATION Info;
|
|
WCHAR Buffer[ MAX_PATH ];
|
|
} FileFsAttrInfoBuffer;
|
|
|
|
//
|
|
// Begin by determining how the target file is to be opened based
|
|
// on whether or not the copy operation is to be restartable.
|
|
//
|
|
|
|
if ( Restartable ) {
|
|
|
|
b = BasepOpenRestartableFile( hSourceFile,
|
|
lpNewFileName,
|
|
&DestFile,
|
|
*lpCopyFlags,
|
|
lpRestartState,
|
|
lpFileSize,
|
|
lpCopyFileContext,
|
|
FileBasicInformationData.FileAttributes,
|
|
OpenFileAsReparsePoint );
|
|
|
|
if( b == SUCCESS_RETURNED_STATE ) {
|
|
// We've picked up in the middle of a restartable copy.
|
|
// The destination file handle is in DestFile, which will
|
|
// be given back to our caller below in the finally.
|
|
|
|
if ( BasepRemoteFile(hSourceFile,DestFile) ) {
|
|
*lpCopySize = BASE_COPY_FILE_CHUNK - 4096;
|
|
}
|
|
ReturnValue = b;
|
|
leave;
|
|
} else if( b == FALSE ) {
|
|
// There was a fatal error.
|
|
leave;
|
|
}
|
|
|
|
// Otherwise we should copy the first stream. If we are to restart copying
|
|
// in that stream, DestFile will be valid.
|
|
|
|
}
|
|
|
|
//
|
|
// If the dest file is not already opened (the restart case), open it now.
|
|
//
|
|
|
|
if( DestFile == INVALID_HANDLE_VALUE ) {
|
|
|
|
BOOL EndsInSlash = FALSE;
|
|
UNICODE_STRING Win32NewFileName;
|
|
PCUNICODE_STRING lpConsoleName = NULL;
|
|
FILE_BASIC_INFORMATION DestBasicInformation;
|
|
|
|
//
|
|
// Determine the create options
|
|
//
|
|
|
|
CreateOptions = FILE_SYNCHRONOUS_IO_NONALERT;
|
|
|
|
if( SourceFileAttributes & FILE_ATTRIBUTE_DIRECTORY )
|
|
CreateOptions |= FILE_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT;
|
|
else
|
|
CreateOptions |= FILE_NON_DIRECTORY_FILE | FILE_SEQUENTIAL_ONLY;
|
|
|
|
if( *lpCopyFlags & (PRIVCOPY_FILE_BACKUP_SEMANTICS|PRIVCOPY_FILE_OWNER_GROUP) )
|
|
CreateOptions |= FILE_OPEN_FOR_BACKUP_INTENT;
|
|
|
|
|
|
//
|
|
// Determine the create disposition
|
|
//
|
|
// Directory files are copied with merge semantics. The rationale
|
|
// is that copying of a directory tree has merge semantics wrt the
|
|
// contained files, so copying of a directory file should also have
|
|
// merge semantics.
|
|
//
|
|
|
|
if( SourceFileAttributes & FILE_ATTRIBUTE_DIRECTORY )
|
|
CreateDisposition = (*lpCopyFlags & COPY_FILE_FAIL_IF_EXISTS) ? FILE_CREATE : FILE_OPEN_IF;
|
|
else
|
|
CreateDisposition = (*lpCopyFlags & COPY_FILE_FAIL_IF_EXISTS) ? FILE_CREATE : FILE_OVERWRITE_IF;
|
|
|
|
|
|
//
|
|
// Determine what access is necessary based on what is being copied
|
|
//
|
|
|
|
DesiredAccess = SYNCHRONIZE | FILE_READ_ATTRIBUTES | GENERIC_WRITE | DELETE;
|
|
|
|
if( SourceFileAttributes & FILE_ATTRIBUTE_DIRECTORY ) {
|
|
// We may or may not be able to get FILE_WRITE_DATA access, necessary for
|
|
// setting compression.
|
|
DesiredAccess &= ~GENERIC_WRITE;
|
|
DesiredAccess |= FILE_WRITE_DATA | FILE_WRITE_ATTRIBUTES | FILE_WRITE_EA | FILE_LIST_DIRECTORY;
|
|
}
|
|
|
|
|
|
if( *lpCopyFlags & PRIVCOPY_FILE_METADATA ) {
|
|
// We need read access for compression, write_dac for the DACL
|
|
DesiredAccess |= GENERIC_READ | WRITE_DAC;
|
|
}
|
|
|
|
if( *lpCopyFlags & PRIVCOPY_FILE_OWNER_GROUP ) {
|
|
DesiredAccess |= WRITE_OWNER;
|
|
}
|
|
|
|
if( (*lpCopyFlags & PRIVCOPY_FILE_SACL)
|
|
&&
|
|
(SourceFileAccess & ACCESS_SYSTEM_SECURITY) ) {
|
|
// Don't bother trying to get access_system_security unless it was
|
|
// successfully obtained on the source (requires SeSecurityPrivilege)
|
|
DesiredAccess |= ACCESS_SYSTEM_SECURITY;
|
|
}
|
|
|
|
SourceFileAttributesMask = ~0;
|
|
|
|
if ( OpenFileAsReparsePoint ) {
|
|
//
|
|
// The target has to be opened as reparse point. If the open
|
|
// below fails, the source is to be closed and re-opened
|
|
// without inhibiting the reparse point behavior.
|
|
//
|
|
|
|
CreateOptions |= FILE_OPEN_REPARSE_POINT;
|
|
DesiredAccess = (DesiredAccess & ~DELETE) | GENERIC_READ;
|
|
CreateDisposition = (*lpCopyFlags & COPY_FILE_FAIL_IF_EXISTS) ? FILE_CREATE : FILE_OPEN_IF;
|
|
}
|
|
|
|
DesiredCreateOptions = CreateOptions;
|
|
DesiredCreateDisposition = CreateDisposition;
|
|
|
|
//
|
|
// Get the Win32 path in a unicode_string, and get the NT path
|
|
//
|
|
|
|
RtlInitUnicodeString( &Win32NewFileName, lpNewFileName );
|
|
|
|
if ( lpNewFileName[(Win32NewFileName.Length >> 1)-1] == (WCHAR)'\\' ) {
|
|
EndsInSlash = TRUE;
|
|
}
|
|
else {
|
|
EndsInSlash = FALSE;
|
|
}
|
|
|
|
TranslationStatus = RtlDosPathNameToNtPathName_U(
|
|
lpNewFileName,
|
|
&DestFileName,
|
|
NULL,
|
|
NULL
|
|
);
|
|
|
|
if ( !TranslationStatus ) {
|
|
SetLastError(ERROR_PATH_NOT_FOUND);
|
|
DestFile = INVALID_HANDLE_VALUE;
|
|
leave;
|
|
}
|
|
DestFileNameBuffer = DestFileName.Buffer;
|
|
|
|
InitializeObjectAttributes(
|
|
&Obja,
|
|
&DestFileName,
|
|
OBJ_CASE_INSENSITIVE,
|
|
NULL,
|
|
NULL
|
|
);
|
|
|
|
SecurityQualityOfService.ContextTrackingMode = SECURITY_DYNAMIC_TRACKING;
|
|
SecurityQualityOfService.ImpersonationLevel = SecurityImpersonation;
|
|
SecurityQualityOfService.EffectiveOnly = TRUE;
|
|
SecurityQualityOfService.Length = sizeof( SECURITY_QUALITY_OF_SERVICE );
|
|
|
|
Obja.SecurityQualityOfService = &SecurityQualityOfService;
|
|
|
|
//
|
|
// Get the EAs
|
|
//
|
|
|
|
EaBuffer = NULL;
|
|
EaSize = 0;
|
|
|
|
Status = NtQueryInformationFile(
|
|
hSourceFile,
|
|
&IoStatusBlock,
|
|
&EaInfo,
|
|
sizeof(EaInfo),
|
|
FileEaInformation
|
|
);
|
|
if ( NT_SUCCESS(Status) && EaInfo.EaSize ) {
|
|
|
|
EaSize = EaInfo.EaSize;
|
|
|
|
do {
|
|
|
|
EaSize *= 2;
|
|
EaBuffer = RtlAllocateHeap( RtlProcessHeap(), MAKE_TAG( TMP_TAG ), EaSize);
|
|
if ( !EaBuffer ) {
|
|
BaseSetLastNTError(STATUS_NO_MEMORY);
|
|
leave;
|
|
}
|
|
|
|
Status = NtQueryEaFile(
|
|
hSourceFile,
|
|
&IoStatusBlock,
|
|
EaBuffer,
|
|
EaSize,
|
|
FALSE,
|
|
(PVOID)NULL,
|
|
0,
|
|
(PULONG)NULL,
|
|
TRUE
|
|
);
|
|
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
RtlFreeHeap(RtlProcessHeap(), 0,EaBuffer);
|
|
EaBuffer = NULL;
|
|
IoStatusBlock.Information = 0;
|
|
}
|
|
|
|
} while ( Status == STATUS_BUFFER_OVERFLOW ||
|
|
Status == STATUS_BUFFER_TOO_SMALL );
|
|
|
|
|
|
EaSize = (ULONG)IoStatusBlock.Information;
|
|
|
|
} // if ( NT_SUCCESS(Status) && EaInfo.EaSize )
|
|
|
|
|
|
//
|
|
// Open the destination file. If the destination is a console name,
|
|
// open as such, otherwise loop until we find a way to open it with
|
|
// NtCreateFile.
|
|
//
|
|
|
|
DestFileAccess = DesiredAccess;
|
|
DestFileSharing = 0;
|
|
EaBufferToUse = EaBuffer;
|
|
EaSizeToUse = EaSize;
|
|
|
|
if( (lpConsoleName = BaseIsThisAConsoleName( &Win32NewFileName, GENERIC_WRITE )) ) {
|
|
|
|
DestFileAccess = DesiredAccess = GENERIC_WRITE;
|
|
DestFileSharing = FILE_SHARE_READ | FILE_SHARE_WRITE;
|
|
|
|
if( EaBuffer != NULL )
|
|
EasDropped = TRUE; // We're not copying the EAs
|
|
|
|
DestFile= OpenConsoleW( lpConsoleName->Buffer,
|
|
DestFileAccess,
|
|
FALSE, // Not inheritable
|
|
DestFileSharing
|
|
);
|
|
|
|
if ( DestFile == INVALID_HANDLE_VALUE ) {
|
|
BaseSetLastNTError(STATUS_ACCESS_DENIED);
|
|
NtClose( DestFile );
|
|
DestFile = INVALID_HANDLE_VALUE;
|
|
leave;
|
|
}
|
|
|
|
}
|
|
|
|
//
|
|
// Even if the source is offline, the destination should
|
|
// not be (at least not as part of the copy).
|
|
//
|
|
SourceFileAttributes &= ~FILE_ATTRIBUTE_OFFLINE;
|
|
|
|
|
|
//
|
|
// If the source file was encrypted and if we are intending
|
|
// to create/overwrite/supersede the destination, attempt
|
|
// to establish the encryption state first by calling
|
|
// DuplicateEncryptionInfoFile. This API not only makes
|
|
// the target file encrypted, it also copies over the source's
|
|
// $efs stream (i.e. everyone who had access to the source file
|
|
// will have access to the dest file).
|
|
//
|
|
//
|
|
|
|
if (!(SourceFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
|
|
&& (SourceFileAttributes & FILE_ATTRIBUTE_ENCRYPTED)
|
|
&& (SourceFileAttributesMask & FILE_ATTRIBUTE_ENCRYPTED)
|
|
&& (CreateDisposition == FILE_CREATE
|
|
|| CreateDisposition == FILE_OVERWRITE_IF)) {
|
|
|
|
// We'll attempt the DuplicateEncryptionInfoCall.
|
|
|
|
DWORD Win32CreateDisposition;
|
|
DWORD LastError;
|
|
|
|
// Convert the NT create-disposition flags into a Win32 version.
|
|
|
|
Status = BasepCreateDispositionToWin32( CreateDisposition,
|
|
&Win32CreateDisposition );
|
|
if( !NT_SUCCESS(Status) ) {
|
|
BaseSetLastNTError( Status );
|
|
|
|
} else {
|
|
|
|
// Mask out the read-only bit for now, so that we can
|
|
// do an NtCreateFile after this DuplicateEncryptionInfoFile
|
|
|
|
SourceFileAttributesMask &= ~FILE_ATTRIBUTE_READONLY;
|
|
|
|
// DuplicateEncryptionInfoFile returns the error code.
|
|
// The "pfn" version of this API is a lazy-loader, so we
|
|
// don't have to implicitely link against advapi32.
|
|
|
|
LastError = pfnDuplicateEncryptionInfoFile(
|
|
lpExistingFileName,
|
|
lpNewFileName,
|
|
Win32CreateDisposition,
|
|
SourceFileAttributes
|
|
& FILE_ATTRIBUTE_VALID_FLAGS
|
|
& SourceFileAttributesMask,
|
|
NULL );
|
|
if( LastError != 0 ) {
|
|
|
|
//
|
|
// We'll fall through and try using NtCreateFile. That,
|
|
// at least, will try to encrypt the target via the
|
|
// FILE_ATTRIBUTE_ENCRYPTED bit. Not as good as
|
|
// DupEncInfo, but better than leaving plain text.
|
|
//
|
|
SetLastError( LastError );
|
|
} else {
|
|
|
|
//
|
|
// Destination was created. Now make it open
|
|
//
|
|
|
|
CreateDisposition = FILE_OPEN;
|
|
}
|
|
}
|
|
} // if (!(SourceFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
|
|
|
|
|
|
//
|
|
// Open the destination file. This can take some effort & retries,
|
|
// because there are so many scenarios for the target file
|
|
// (e.g. different destination servers have different capabilities).
|
|
//
|
|
|
|
while( DestFile == NULL || DestFile == INVALID_HANDLE_VALUE ) {
|
|
|
|
// Attempt to create the destination
|
|
|
|
Status = NtCreateFile(
|
|
&DestFile,
|
|
DestFileAccess,
|
|
&Obja,
|
|
&IoStatusBlock,
|
|
NULL,
|
|
SourceFileAttributes
|
|
& FILE_ATTRIBUTE_VALID_FLAGS
|
|
& SourceFileAttributesMask,
|
|
DestFileSharing,
|
|
CreateDisposition,
|
|
CreateOptions,
|
|
EaBufferToUse,
|
|
EaSizeToUse
|
|
);
|
|
|
|
if( !NT_SUCCESS(Status) ) {
|
|
|
|
// Set the last error and fall through. We will attempt below to
|
|
// resolve the problem and try again.
|
|
|
|
BaseSetLastNTError( Status );
|
|
|
|
|
|
} else {
|
|
|
|
//
|
|
// We successfully created the file. For some special cases,
|
|
// we must post-process this create before continuing with the copy.
|
|
//
|
|
|
|
if( (SourceFileAttributes & FILE_ATTRIBUTE_DIRECTORY) &&
|
|
CreateDisposition == FILE_OPEN &&
|
|
(DestFileAccess & FILE_WRITE_DATA) == FILE_WRITE_DATA &&
|
|
(CreateOptions & FILE_DIRECTORY_FILE) == FILE_DIRECTORY_FILE ) {
|
|
|
|
//
|
|
// If we're copying to NT4, a previous iteration through this
|
|
// large while loop switched the CreateDisposition from
|
|
// FILE_OPENIF to FILE_OPEN; otherwise, NT4 fails the open
|
|
// (when passing FILE_OPENIF and FILE_WRITE_DATA to a directory
|
|
// file that already exists). The open worked, but the problem
|
|
// is that now if we need to set compression on the target, we'll
|
|
// get status_invalid_parameter because the FILE_DIRECTORY_FILE
|
|
// CreateOption was set. So, to allow compression to work, and
|
|
// since at this point we already know the target is a directory
|
|
// file, we can re-open it without that create option.
|
|
//
|
|
|
|
CreateOptions &= ~FILE_DIRECTORY_FILE;
|
|
|
|
NtClose( DestFile );
|
|
Status = NtCreateFile(
|
|
&DestFile,
|
|
DestFileAccess,
|
|
&Obja,
|
|
&IoStatusBlock,
|
|
NULL,
|
|
SourceFileAttributes & FILE_ATTRIBUTE_VALID_FLAGS & SourceFileAttributesMask,
|
|
DestFileSharing,
|
|
CreateDisposition,
|
|
CreateOptions,
|
|
EaBufferToUse,
|
|
EaSizeToUse
|
|
);
|
|
if( !NT_SUCCESS(Status) ) {
|
|
|
|
// But if that didn't work, go back to the combination that
|
|
// did (this happens on Samba servers).
|
|
|
|
CreateOptions |= FILE_DIRECTORY_FILE;
|
|
Status = NtCreateFile(
|
|
&DestFile,
|
|
DestFileAccess,
|
|
&Obja,
|
|
&IoStatusBlock,
|
|
NULL,
|
|
SourceFileAttributes & FILE_ATTRIBUTE_VALID_FLAGS & SourceFileAttributesMask,
|
|
DestFileSharing,
|
|
CreateDisposition,
|
|
CreateOptions,
|
|
EaBufferToUse,
|
|
EaSizeToUse
|
|
);
|
|
|
|
if( !NT_SUCCESS(Status) ) {
|
|
DestFile = INVALID_HANDLE_VALUE;
|
|
BaseSetLastNTError( Status );
|
|
leave;
|
|
}
|
|
}
|
|
}
|
|
else if( (SourceFileAttributes & FILE_ATTRIBUTE_DIRECTORY) &&
|
|
CreateDisposition == FILE_OPEN_IF &&
|
|
lpConsoleName == NULL ) {
|
|
|
|
//
|
|
// Compatibility hack: We successfully created the target, but
|
|
// some servers (SCO VisionFS) get confused by the FILE_OPEN_IF
|
|
// flag and create a non-directory file instead. Check to see if
|
|
// this hapenned, and if so deleted it and re-create with FILE_CREATE
|
|
// instead. This is a perf hit that we have to query the file attributes,
|
|
// but at least it is not a net round-trip because the rdr caches the
|
|
// file attributes in Create&X.
|
|
//
|
|
|
|
|
|
FILE_BASIC_INFORMATION NewDestInfo;
|
|
|
|
Status = NtQueryInformationFile( DestFile,
|
|
&IoStatus,
|
|
&NewDestInfo,
|
|
sizeof(NewDestInfo),
|
|
FileBasicInformation );
|
|
if( !NT_SUCCESS(Status) ) {
|
|
BaseMarkFileForDelete( DestFile, 0 );
|
|
BaseSetLastNTError(Status);
|
|
leave;
|
|
}
|
|
|
|
if( !(NewDestInfo.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) ) {
|
|
|
|
// Yes, a non-directory file got created. Delete it, then
|
|
// try again without FILE_OPEN_IF.
|
|
|
|
BaseMarkFileForDelete( DestFile,
|
|
NewDestInfo.FileAttributes );
|
|
NtClose( DestFile );
|
|
DestFile = INVALID_HANDLE_VALUE;
|
|
|
|
CreateDisposition = FILE_CREATE;
|
|
|
|
// Also, if we request FILE_WRITE_DATA access, the
|
|
// directory gets created but the NtCreateFile call
|
|
// returns status_object_name_collision. Since this
|
|
// is a very VisionFS-specific workaround, we'll just
|
|
// turn off that bit
|
|
|
|
DestFileAccess &= ~FILE_WRITE_DATA;
|
|
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if( (FileBasicInformationData.FileAttributes & FILE_ATTRIBUTE_READONLY)
|
|
&&
|
|
!(SourceFileAttributesMask & FILE_ATTRIBUTE_READONLY) ) {
|
|
|
|
// The read-only bit was turned off, and must now be
|
|
// reset (it gets turned off when we call DuplicateEncryptionInfo,
|
|
// since that API does not return a handle).
|
|
|
|
Status = NtSetInformationFile(
|
|
DestFile,
|
|
&IoStatus,
|
|
&FileBasicInformationData,
|
|
sizeof(FileBasicInformationData),
|
|
FileBasicInformation
|
|
);
|
|
if( !NT_SUCCESS(Status) ) {
|
|
BaseMarkFileForDelete( DestFile, 0 );
|
|
BaseSetLastNTError(Status);
|
|
leave;
|
|
}
|
|
}
|
|
|
|
break; // while( TRUE )
|
|
|
|
} // NtCreateFile ... if( !NT_SUCCESS(Status) ) ... else
|
|
|
|
// If we reach this point, some error has occurred in the attempt to
|
|
// create the file.
|
|
|
|
|
|
//
|
|
// If a file/directory already exists and we can't overwrite it,
|
|
// abort now.
|
|
//
|
|
|
|
if ( (*lpCopyFlags & COPY_FILE_FAIL_IF_EXISTS) &&
|
|
(STATUS_OBJECT_NAME_COLLISION == Status) ) {
|
|
|
|
// Not allowed to overwrite an existing file.
|
|
SetLastError( ERROR_FILE_EXISTS );
|
|
DestFile = INVALID_HANDLE_VALUE;
|
|
leave;
|
|
|
|
} else if ( Status == STATUS_FILE_IS_A_DIRECTORY ) {
|
|
|
|
// Not allowed to overwrite a directory with a file.
|
|
if ( EndsInSlash ) {
|
|
SetLastError(ERROR_PATH_NOT_FOUND);
|
|
}
|
|
else {
|
|
SetLastError(ERROR_ACCESS_DENIED);
|
|
}
|
|
DestFile = INVALID_HANDLE_VALUE;
|
|
leave;
|
|
}
|
|
|
|
//
|
|
// If we're trying to create a directory, and a non-directory
|
|
// file already exists by that name, we need to manually delete
|
|
// it (FILE_OVERWRITE isn't valid for a directory file).
|
|
//
|
|
|
|
if( (*lpCopyFlags & PRIVCOPY_FILE_DIRECTORY) &&
|
|
Status == STATUS_NOT_A_DIRECTORY &&
|
|
!(*lpCopyFlags & COPY_FILE_FAIL_IF_EXISTS) ) {
|
|
|
|
Status = NtCreateFile(
|
|
&DestFile,
|
|
DELETE|SYNCHRONIZE,
|
|
&Obja,
|
|
&IoStatusBlock,
|
|
NULL,
|
|
FILE_ATTRIBUTE_NORMAL,
|
|
0,
|
|
FILE_OPEN,
|
|
FILE_DELETE_ON_CLOSE | FILE_SYNCHRONOUS_IO_NONALERT,
|
|
NULL,
|
|
0
|
|
);
|
|
if( !NT_SUCCESS(Status) ) {
|
|
BaseSetLastNTError(Status);
|
|
DestFile = INVALID_HANDLE_VALUE;
|
|
leave;
|
|
}
|
|
|
|
NtClose( DestFile );
|
|
DestFile = INVALID_HANDLE_VALUE;
|
|
|
|
continue;
|
|
}
|
|
|
|
|
|
//
|
|
// Some sharing and access errors can be handled
|
|
// by reducing the access we request on the target
|
|
// file.
|
|
//
|
|
|
|
if( GetLastError() == ERROR_SHARING_VIOLATION ||
|
|
GetLastError() == ERROR_ACCESS_DENIED ) {
|
|
|
|
//
|
|
// If the create failed because of a sharing violation or because access
|
|
// was denied, attempt to open the file and allow other readers and
|
|
// writers.
|
|
//
|
|
|
|
if( (DestFileSharing & (FILE_SHARE_READ|FILE_SHARE_WRITE))
|
|
!= (FILE_SHARE_READ|FILE_SHARE_WRITE) ) {
|
|
|
|
DestFileSharing = FILE_SHARE_READ | FILE_SHARE_WRITE;
|
|
continue;
|
|
}
|
|
|
|
//
|
|
// If this failed as well, then attempt to open w/o specifying
|
|
// delete access. It is probably not necessary to have delete
|
|
// access to the file anyway, since it will not be able to clean
|
|
// it up because it's probably open. However, this is not
|
|
// necessarily the case.
|
|
//
|
|
|
|
else if ( (DestFileAccess & DELETE) ) {
|
|
|
|
DestFileAccess &= ~DELETE;
|
|
continue;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
//
|
|
// If the destination has not been successfully created/opened, see
|
|
// if it's because EAs aren't supported
|
|
//
|
|
|
|
if( EaBufferToUse != NULL
|
|
&&
|
|
GetLastError() == ERROR_EAS_NOT_SUPPORTED ) {
|
|
|
|
// Attempt the create again, but don't use the EAs
|
|
|
|
EasDropped = TRUE;
|
|
EaBufferToUse = NULL;
|
|
EaSizeToUse = 0;
|
|
DestFileAccess = DesiredAccess;
|
|
DestFileSharing = 0;
|
|
continue;
|
|
|
|
} // if( EaBufferToUse != NULL ...
|
|
|
|
// If we still have an access-denied problem, try dropping
|
|
// the WRITE_DAC or WRITE_OWNER access
|
|
|
|
if(( GetLastError() == ERROR_ACCESS_DENIED )
|
|
&& (DestFileAccess & (WRITE_DAC | WRITE_OWNER)) ) {
|
|
|
|
// If WRITE_DAC is set, try turning it off.
|
|
|
|
if( DestFileAccess & WRITE_DAC ) {
|
|
DestFileAccess &= ~WRITE_DAC;
|
|
}
|
|
|
|
// Or, if WRITE_OWNER is set, try turning it off. We'll
|
|
// turn WRITE_DAC back on if it was previously turned off. Then,
|
|
// if this still doesn't work, then the next iteration will turn
|
|
// WRITE_DAC back off, thus covering both scenarios.
|
|
|
|
else if( DestFileAccess & WRITE_OWNER ) {
|
|
DestFileAccess &= ~WRITE_OWNER;
|
|
DestFileAccess |= (DesiredAccess & WRITE_DAC);
|
|
}
|
|
|
|
DestFileSharing = 0;
|
|
continue;
|
|
}
|
|
|
|
|
|
//
|
|
//
|
|
// We might be having a problem copying encryption. E.g.
|
|
// we might get an access-denied because the remote target machine
|
|
// isn't trusted for delegation.
|
|
// We'll try copying without encryption. If that works, then later, in
|
|
// BasepCopyEncryption, we'll see if it's OK that we lost
|
|
// encryption.
|
|
//
|
|
|
|
if ( (SourceFileAttributes & FILE_ATTRIBUTE_ENCRYPTED)
|
|
&& (SourceFileAttributesMask & FILE_ATTRIBUTE_ENCRYPTED) )
|
|
{
|
|
|
|
// Try taking the encryption bit out of the
|
|
// attributes we pass to NtCreateFile.
|
|
|
|
SourceFileAttributesMask &= ~FILE_ATTRIBUTE_ENCRYPTED;
|
|
CreateOptions = DesiredCreateOptions;
|
|
DestFileAccess = DesiredAccess;
|
|
DestFileSharing = 0;
|
|
|
|
continue;
|
|
}
|
|
|
|
|
|
//
|
|
// NT4 returns invalid-parameter error on an attempt to open
|
|
// a directory file with both FILE_WRITE_DATA and FILE_OPEN_IF.
|
|
// Samba 2.x returns ERROR_ALREADY_EXISTS, even though
|
|
// the semantics of FILE_OPEN_IF says that it should open the
|
|
// existing directory.
|
|
// For both cases, we'll try it with FILE_OPEN.
|
|
//
|
|
|
|
if( ( GetLastError() == ERROR_INVALID_PARAMETER ||
|
|
GetLastError() == ERROR_ALREADY_EXISTS ) &&
|
|
(SourceFileAttributes & FILE_ATTRIBUTE_DIRECTORY) &&
|
|
CreateDisposition == FILE_OPEN_IF ) {
|
|
|
|
CreateDisposition = FILE_OPEN;
|
|
|
|
SourceFileAttributesMask = ~0;
|
|
CreateOptions = DesiredCreateOptions;
|
|
DestFileAccess = DesiredAccess;
|
|
DestFileSharing = 0;
|
|
continue;
|
|
}
|
|
|
|
//
|
|
// Some downlevel servers don't allow a directory to be opened for write_data
|
|
// access. We need write_data in order to set compression, but the
|
|
// downlevel server likely won't support that anyway. (This happens on
|
|
// NTFS4 if the target directory file doesn't already exist. In this
|
|
// case the compression will get copied over anyway as part of the create.)
|
|
//
|
|
|
|
if( (SourceFileAttributes & FILE_ATTRIBUTE_DIRECTORY) &&
|
|
(DestFileAccess & FILE_WRITE_DATA) ) {
|
|
|
|
DestFileAccess = DesiredAccess & ~FILE_WRITE_DATA;
|
|
|
|
CreateDisposition = DesiredCreateDisposition;
|
|
CreateOptions = DesiredCreateOptions;
|
|
DestFileSharing = 0;
|
|
continue;
|
|
}
|
|
|
|
// If we reach this point, we've run out of options and must give up.
|
|
DestFile = INVALID_HANDLE_VALUE;
|
|
leave;
|
|
|
|
} // while( DestFile == INVALID_HANDLE_VALUE )
|
|
// If we reach this point, we've successfully opened the dest file.
|
|
|
|
//
|
|
// If we lost the EAs, check to see if that's OK before carrying on.
|
|
//
|
|
|
|
if( EasDropped && (*lpCopyFlags & PRIVCOPY_FILE_METADATA) ) {
|
|
|
|
// Check to see if it's OK that we skip the EAs.
|
|
|
|
if( !BasepCopyFileCallback( TRUE, // Continue by default
|
|
ERROR_EAS_NOT_SUPPORTED,
|
|
Context,
|
|
NULL,
|
|
PRIVCALLBACK_EAS_NOT_SUPPORTED,
|
|
hSourceFile,
|
|
INVALID_HANDLE_VALUE,
|
|
&Canceled
|
|
) ) {
|
|
// Not OK. The last error has already been set.
|
|
if( Canceled ) {
|
|
BaseMarkFileForDelete(
|
|
DestFile,
|
|
0
|
|
);
|
|
}
|
|
NtClose( DestFile );
|
|
DestFile = INVALID_HANDLE_VALUE;
|
|
leave;
|
|
}
|
|
}
|
|
|
|
//
|
|
// When appropriate, copy the reparse point.
|
|
//
|
|
|
|
if ( OpenFileAsReparsePoint &&
|
|
(DestFile != INVALID_HANDLE_VALUE)) {
|
|
DWORD CopyResult = FALSE;
|
|
|
|
CopyResult = CopyReparsePoint(
|
|
hSourceFile,
|
|
DestFile
|
|
);
|
|
|
|
if ( !CopyResult ) {
|
|
//
|
|
// Note that when OpenFileAsReparsePoint is TRUE, by
|
|
// exiting at this point the effect is that the caller
|
|
// will re-start the copy without inhibiting the reparse
|
|
// behavior.
|
|
//
|
|
|
|
//If we fail here, we may be leaving a newly created
|
|
// file around at the destination. If
|
|
// COPY_FILE_FAIL_IF_EXISTS has been specified,
|
|
// further retries will fail. Therefore we need to
|
|
// try to delete the new file here.
|
|
if (*lpCopyFlags & COPY_FILE_FAIL_IF_EXISTS)
|
|
{
|
|
FILE_DISPOSITION_INFORMATION Disposition = {TRUE};
|
|
|
|
Status = NtSetInformationFile(
|
|
DestFile,
|
|
&IoStatus,
|
|
&Disposition,
|
|
sizeof(Disposition),
|
|
FileDispositionInformation
|
|
);
|
|
//Ignore an error if there is one.
|
|
|
|
}
|
|
*lpDestFile = DestFile;
|
|
leave;
|
|
}
|
|
} // if ( OpenFileAsReparsePoint &&(DestFile != INVALID_HANDLE_VALUE))
|
|
|
|
|
|
//
|
|
// Get the File & FileSys attributes for the target volume, plus
|
|
// the FileSys attributes for the source volume. Ignore errors in
|
|
// the target, e.g. it might be a printer and not support these calls
|
|
// (just assume the attrs in this case are zero).
|
|
//
|
|
|
|
*DestFileFsAttributes = 0;
|
|
SourceFileFsAttributes = 0;
|
|
DestFileAttributes = 0;
|
|
|
|
Status = NtQueryVolumeInformationFile( DestFile,
|
|
&IoStatus,
|
|
&FileFsAttrInfoBuffer.Info,
|
|
sizeof(FileFsAttrInfoBuffer),
|
|
FileFsAttributeInformation );
|
|
|
|
if( NT_SUCCESS(Status) ) {
|
|
*DestFileFsAttributes = FileFsAttrInfoBuffer.Info.FileSystemAttributes;
|
|
}
|
|
|
|
if( lpConsoleName == NULL ) {
|
|
Status = NtQueryInformationFile( DestFile,
|
|
&IoStatus,
|
|
&DestBasicInformation,
|
|
sizeof(DestBasicInformation),
|
|
FileBasicInformation );
|
|
if( NT_SUCCESS(Status) ) {
|
|
DestFileAttributes = DestBasicInformation.FileAttributes;
|
|
}
|
|
}
|
|
|
|
Status = NtQueryVolumeInformationFile( hSourceFile,
|
|
&IoStatus,
|
|
&FileFsAttrInfoBuffer.Info,
|
|
sizeof(FileFsAttrInfoBuffer),
|
|
FileFsAttributeInformation );
|
|
if( NT_SUCCESS(Status) ) {
|
|
SourceFileFsAttributes = FileFsAttrInfoBuffer.Info.FileSystemAttributes;
|
|
} else {
|
|
BaseMarkFileForDelete( DestFile, 0 );
|
|
BaseSetLastNTError(Status);
|
|
leave;
|
|
}
|
|
|
|
//
|
|
// If requested and applicable, copy one or more of the the DACL, SACL, owner, and group.
|
|
// If the source doesn't support persistent ACLs, assume that that means that
|
|
// it doesn't support any of DACL, SACL, and owner/group.
|
|
//
|
|
|
|
if( (SourceFileFsAttributes & FILE_PERSISTENT_ACLS)
|
|
&&
|
|
(*lpCopyFlags & (PRIVCOPY_FILE_METADATA | PRIVCOPY_FILE_SACL | PRIVCOPY_FILE_OWNER_GROUP)) ) {
|
|
|
|
SECURITY_INFORMATION SecurityInformation = 0;
|
|
|
|
if( *lpCopyFlags & PRIVCOPY_FILE_METADATA
|
|
&& !(*lpCopyFlags & PRIVCOPY_FILE_SKIP_DACL) ) {
|
|
|
|
// Copy the DACL if metadata flag is set, but skip_dacl is not.
|
|
// The skip_dacl flag is a temporary workaround for a problem
|
|
// in CSC & roaming profiles.
|
|
|
|
SecurityInformation |= DACL_SECURITY_INFORMATION;
|
|
}
|
|
|
|
if( *lpCopyFlags & PRIVCOPY_FILE_SACL )
|
|
SecurityInformation |= SACL_SECURITY_INFORMATION;
|
|
|
|
if( *lpCopyFlags & PRIVCOPY_FILE_OWNER_GROUP )
|
|
SecurityInformation |= OWNER_SECURITY_INFORMATION | GROUP_SECURITY_INFORMATION;
|
|
|
|
if( SecurityInformation != 0 ) {
|
|
|
|
if( !BasepCopySecurityInformation( lpExistingFileName,
|
|
hSourceFile,
|
|
SourceFileAccess,
|
|
lpNewFileName,
|
|
DestFile,
|
|
DestFileAccess,
|
|
SecurityInformation,
|
|
Context,
|
|
*DestFileFsAttributes,
|
|
&Canceled,
|
|
FALSE )) {
|
|
|
|
if( Canceled ) {
|
|
BaseMarkFileForDelete(
|
|
DestFile,
|
|
0
|
|
);
|
|
}
|
|
leave;
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// Copy compression and encryption
|
|
//
|
|
|
|
if( (*lpCopyFlags & PRIVCOPY_FILE_METADATA) ) {
|
|
|
|
BOOL DoCompression = FALSE;
|
|
int i = 0;
|
|
|
|
// Compression and encryption must be handled in the proper
|
|
// order, since a file can't be both at once. For example,
|
|
// if copying (with supersede) a compressed/unencrypted file over an
|
|
// uncompressed/encrypted file, we must decrypt the dest
|
|
// before attempting to compress it.
|
|
|
|
if( DestFileAttributes & FILE_ATTRIBUTE_COMPRESSED ) {
|
|
// Handle compression first
|
|
DoCompression = TRUE;
|
|
}
|
|
|
|
for( i = 0; i < 2; i++ ) {
|
|
|
|
if( DoCompression ) {
|
|
|
|
DoCompression = FALSE;
|
|
b = BasepCopyCompression( hSourceFile,
|
|
DestFile,
|
|
SourceFileAttributes,
|
|
DestFileAttributes,
|
|
*DestFileFsAttributes,
|
|
*lpCopyFlags,
|
|
&Context );
|
|
|
|
} else {
|
|
|
|
DoCompression = TRUE;
|
|
b = BasepCopyEncryption( hSourceFile,
|
|
lpNewFileName,
|
|
&DestFile,
|
|
&Obja,
|
|
DestFileAccess,
|
|
DestFileSharing,
|
|
CreateDisposition,
|
|
CreateOptions,
|
|
SourceFileAttributes,
|
|
SourceFileAttributesMask,
|
|
&DestFileAttributes,
|
|
*DestFileFsAttributes,
|
|
*lpCopyFlags,
|
|
&Context );
|
|
}
|
|
|
|
if( !b ) {
|
|
// The dest file is already marked for delete and
|
|
// last error has been set.
|
|
leave;
|
|
}
|
|
} // for( i = 0; i < 2; i++ )
|
|
|
|
} // if( (*lpCopyFlags & PRIVCOPY_FILE_METADATA) )
|
|
else {
|
|
|
|
//
|
|
// For the public copyfile, we still need to handle encryption.
|
|
//
|
|
|
|
b = BasepCopyEncryption( hSourceFile,
|
|
lpNewFileName,
|
|
&DestFile,
|
|
&Obja,
|
|
DestFileAccess,
|
|
DestFileSharing,
|
|
CreateDisposition,
|
|
CreateOptions,
|
|
SourceFileAttributes,
|
|
SourceFileAttributesMask,
|
|
&DestFileAttributes,
|
|
*DestFileFsAttributes,
|
|
*lpCopyFlags,
|
|
&Context );
|
|
|
|
if( !b ) {
|
|
// The dest file is already marked for delete and
|
|
// last error has been set.
|
|
leave;
|
|
}
|
|
} // if( (*lpCopyFlags & PRIVCOPY_FILE_METADATA) ) ... else
|
|
|
|
|
|
//
|
|
// If copying a directory file, see if any attributes need to be
|
|
// added. For non-directory files, this is handled in the NtCreateFile since
|
|
// either FILE_CREATE or FILE_OVERWRITE_IF is specified.
|
|
//
|
|
|
|
if( SourceFileAttributes & FILE_ATTRIBUTE_DIRECTORY ) {
|
|
|
|
//
|
|
// But before copying attributes, in the supersede case, the target's
|
|
// named streams should be removed. We need to do this first,
|
|
// in case copying the attributes sets the read-only bit.
|
|
//
|
|
|
|
if( *lpCopyFlags & PRIVCOPY_FILE_SUPERSEDE ) {
|
|
|
|
ULONG StreamInfoSize;
|
|
PFILE_STREAM_INFORMATION StreamInfo;
|
|
PFILE_STREAM_INFORMATION StreamInfoBase = NULL;
|
|
|
|
// Get the dest file's streams
|
|
|
|
StreamInfoSize = 4096;
|
|
do {
|
|
StreamInfoBase = RtlAllocateHeap( RtlProcessHeap(),
|
|
MAKE_TAG( TMP_TAG ),
|
|
StreamInfoSize );
|
|
|
|
if ( !StreamInfoBase ) {
|
|
BaseSetLastNTError( STATUS_NO_MEMORY );
|
|
leave;
|
|
}
|
|
|
|
Status = NtQueryInformationFile(
|
|
DestFile,
|
|
&IoStatus,
|
|
(PVOID) StreamInfoBase,
|
|
StreamInfoSize,
|
|
FileStreamInformation
|
|
);
|
|
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
//
|
|
// We failed the call. Free up the previous buffer and set up
|
|
// for another pass with a buffer twice as large
|
|
//
|
|
|
|
RtlFreeHeap(RtlProcessHeap(), 0, StreamInfoBase);
|
|
StreamInfoBase = NULL;
|
|
StreamInfoSize *= 2;
|
|
}
|
|
else if( IoStatus.Information == 0 ) {
|
|
// There are no streams
|
|
RtlFreeHeap(RtlProcessHeap(), 0, StreamInfoBase);
|
|
StreamInfoBase = NULL;
|
|
}
|
|
|
|
} while ( Status == STATUS_BUFFER_OVERFLOW || Status == STATUS_BUFFER_TOO_SMALL );
|
|
|
|
// If there were any streams, delete them.
|
|
|
|
if( StreamInfoBase != NULL ) {
|
|
StreamInfo = StreamInfoBase;
|
|
while (TRUE) {
|
|
|
|
OBJECT_ATTRIBUTES Obja;
|
|
UNICODE_STRING StreamName;
|
|
HANDLE DestStream;
|
|
|
|
StreamName.Length = (USHORT) StreamInfo->StreamNameLength;
|
|
StreamName.MaximumLength = (USHORT) StreamName.Length;
|
|
StreamName.Buffer = StreamInfo->StreamName;
|
|
|
|
InitializeObjectAttributes(
|
|
&Obja,
|
|
&StreamName,
|
|
OBJ_CASE_INSENSITIVE,
|
|
DestFile,
|
|
NULL
|
|
);
|
|
|
|
// Relative-open the stream to be deleted.
|
|
|
|
Status = NtCreateFile(
|
|
&DestStream,
|
|
DELETE|SYNCHRONIZE,
|
|
&Obja,
|
|
&IoStatusBlock,
|
|
NULL,
|
|
0,
|
|
FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
|
|
FILE_OPEN,
|
|
FILE_DELETE_ON_CLOSE | FILE_SYNCHRONOUS_IO_NONALERT,
|
|
NULL,
|
|
0
|
|
);
|
|
if( !NT_SUCCESS(Status) ) {
|
|
RtlFreeHeap(RtlProcessHeap(), 0, StreamInfoBase);
|
|
BaseMarkFileForDelete( DestFile, 0 );
|
|
BaseSetLastNTError( Status );
|
|
leave;
|
|
}
|
|
|
|
// Delete the stream
|
|
NtClose( DestStream );
|
|
|
|
if (StreamInfo->NextEntryOffset == 0) {
|
|
break;
|
|
}
|
|
StreamInfo = (PFILE_STREAM_INFORMATION)((PCHAR) StreamInfo + StreamInfo->NextEntryOffset);
|
|
} // while (TRUE)
|
|
|
|
RtlFreeHeap(RtlProcessHeap(), 0, StreamInfoBase);
|
|
} // if( StreamInfoBase != NULL )
|
|
} // if( *lpCopyFlags & PRIVCOPY_FILE_SUPERSEDE )
|
|
|
|
// Now, if necessary, copy over attributes.
|
|
|
|
if( SourceFileAttributes != DestFileAttributes ) {
|
|
|
|
DestFileAttributes |= SourceFileAttributes;
|
|
|
|
RtlZeroMemory( &DestBasicInformation, sizeof(DestBasicInformation) );
|
|
DestBasicInformation.FileAttributes = DestFileAttributes;
|
|
Status = NtSetInformationFile( DestFile,
|
|
&IoStatus,
|
|
&DestBasicInformation,
|
|
sizeof(DestBasicInformation),
|
|
FileBasicInformation );
|
|
if( !NT_SUCCESS(Status) ) {
|
|
BaseMarkFileForDelete( DestFile, 0 );
|
|
BaseSetLastNTError(Status);
|
|
leave;
|
|
}
|
|
|
|
DestFileAttributes = 0;
|
|
Status = NtQueryInformationFile( DestFile,
|
|
&IoStatus,
|
|
&DestBasicInformation,
|
|
sizeof(DestBasicInformation),
|
|
FileBasicInformation );
|
|
if( NT_SUCCESS(Status) ) {
|
|
DestFileAttributes = DestBasicInformation.FileAttributes;
|
|
} else {
|
|
BaseMarkFileForDelete( DestFile, 0 );
|
|
BaseSetLastNTError(Status);
|
|
leave;
|
|
}
|
|
}
|
|
|
|
} // if( SourceFileAttributes & FILE_ATTRIBUTE_DIRECTORY )
|
|
|
|
|
|
} // if( DestFile != INVALID_HANDLE_VALUE )
|
|
|
|
//
|
|
// If this is a directory file, there is nothing left to copy
|
|
//
|
|
|
|
if( SourceFileAttributes & FILE_ATTRIBUTE_DIRECTORY ) {
|
|
BOOL Canceled = FALSE;
|
|
|
|
if( !BasepCopyFileCallback( TRUE, // ContinueByDefault
|
|
RtlNtStatusToDosError(STATUS_REQUEST_ABORTED),
|
|
Context,
|
|
NULL,
|
|
CALLBACK_STREAM_SWITCH,
|
|
hSourceFile,
|
|
DestFile,
|
|
&Canceled ) ) {
|
|
ReturnValue = FALSE;
|
|
if( Canceled ) {
|
|
BaseMarkFileForDelete(
|
|
DestFile,
|
|
0
|
|
);
|
|
}
|
|
} else {
|
|
ReturnValue = TRUE;
|
|
}
|
|
leave;
|
|
|
|
}
|
|
|
|
|
|
} else { // if ( !ARGUMENT_PRESENT(hTargetFile) )
|
|
|
|
// We're copying a named stream.
|
|
|
|
OBJECT_ATTRIBUTES ObjectAttributes;
|
|
UNICODE_STRING StreamName;
|
|
IO_STATUS_BLOCK IoStatus;
|
|
ULONG Disposition;
|
|
|
|
//
|
|
// Create the output stream relative to the file specified by the
|
|
// hTargetFile file handle.
|
|
//
|
|
|
|
RtlInitUnicodeString(&StreamName, lpNewFileName);
|
|
InitializeObjectAttributes(
|
|
&ObjectAttributes,
|
|
&StreamName,
|
|
0,
|
|
hTargetFile,
|
|
(PSECURITY_DESCRIPTOR)NULL
|
|
);
|
|
|
|
//
|
|
// Determine the disposition type.
|
|
//
|
|
|
|
if ( *lpCopyFlags & COPY_FILE_FAIL_IF_EXISTS ) {
|
|
Disposition = FILE_CREATE;
|
|
} else {
|
|
Disposition = FILE_OVERWRITE_IF;
|
|
}
|
|
|
|
if ( Restartable ) {
|
|
if ( lpRestartState->LastKnownGoodOffset.QuadPart ) {
|
|
Disposition = FILE_OPEN;
|
|
} else {
|
|
Disposition = FILE_OVERWRITE_IF;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Inhibit reparse behavior when appropriate.
|
|
//
|
|
|
|
FlagsAndAttributes = FILE_SYNCHRONOUS_IO_NONALERT | FILE_SEQUENTIAL_ONLY;
|
|
DesiredAccess = GENERIC_WRITE | SYNCHRONIZE;
|
|
if ( OpenFileAsReparsePoint ) {
|
|
//
|
|
// The target has to be opened as reparse point. If
|
|
// this fails the source is to be closed and re-opened
|
|
// without inhibiting the reparse point behavior.
|
|
//
|
|
|
|
FlagsAndAttributes |= FILE_OPEN_REPARSE_POINT;
|
|
DesiredAccess |= GENERIC_READ;
|
|
if ( !(*lpCopyFlags & COPY_FILE_FAIL_IF_EXISTS) ||
|
|
!(Restartable && (lpRestartState->LastKnownGoodOffset.QuadPart)) ) {
|
|
Disposition = FILE_OPEN_IF;
|
|
}
|
|
}
|
|
|
|
Status = NtCreateFile(
|
|
&DestFile,
|
|
DesiredAccess,
|
|
&ObjectAttributes,
|
|
&IoStatus,
|
|
lpFileSize,
|
|
0,
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
|
|
Disposition,
|
|
FlagsAndAttributes,
|
|
(PVOID)NULL,
|
|
0);
|
|
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
|
|
BaseSetLastNTError(Status);
|
|
|
|
// If we failed the create with an invalid name error, it might be becuase
|
|
// we tried to copy an NTFS5 property set to pre-NTFS5 (and pre-NTFS4/SP4)
|
|
// To detect this, we first check the error, and that the prefix character
|
|
// of the stream name is a reserved ole character.
|
|
|
|
if( Status == STATUS_OBJECT_NAME_INVALID
|
|
&&
|
|
StreamName.Buffer[1] <= 0x1f
|
|
&&
|
|
StreamName.Buffer[1] >= 1 ) {
|
|
|
|
// Now we check to see if we're copying to pre-NTFS5.
|
|
// If so, we'll assume that the leading ole character is
|
|
// the cause of the problem, and will silently fail the
|
|
// copy of this stream just as NT4 did.
|
|
|
|
NTSTATUS StatusT = STATUS_SUCCESS;
|
|
IO_STATUS_BLOCK Iosb;
|
|
FILE_FS_ATTRIBUTE_INFORMATION FsAttrInfo;
|
|
|
|
StatusT = NtQueryVolumeInformationFile( hTargetFile, &Iosb,
|
|
&FsAttrInfo,
|
|
sizeof(FsAttrInfo),
|
|
FileFsAttributeInformation );
|
|
|
|
|
|
// We should always get a buffer-overflow error here, because we don't
|
|
// provide enough buffer for the file system name, but that's OK because
|
|
// we don't need it (status_buffer_overflow is just a warning, so the rest
|
|
// of the data is good).
|
|
|
|
if( !NT_SUCCESS(StatusT) && STATUS_BUFFER_OVERFLOW != StatusT) {
|
|
Status = StatusT;
|
|
BaseSetLastNTError(Status);
|
|
leave;
|
|
}
|
|
|
|
// If this is pre-NTFS5, then silently ignore the error.
|
|
if( !(FILE_SUPPORTS_OBJECT_IDS & FsAttrInfo.FileSystemAttributes) ) {
|
|
|
|
Status = STATUS_SUCCESS;
|
|
ReturnValue = TRUE;
|
|
leave;
|
|
}
|
|
}
|
|
|
|
|
|
if ( Status != STATUS_ACCESS_DENIED ) {
|
|
BaseSetLastNTError(Status);
|
|
leave;
|
|
}
|
|
|
|
//
|
|
// Determine whether or not this failed because the file
|
|
// is a readonly file. If so, change it to read/write,
|
|
// re-attempt the open, and set it back to readonly again.
|
|
//
|
|
|
|
Status = NtQueryInformationFile(
|
|
hTargetFile,
|
|
&IoStatus,
|
|
(PVOID) &FileBasicInformationData,
|
|
sizeof(FileBasicInformationData),
|
|
FileBasicInformation
|
|
);
|
|
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
BaseSetLastNTError(Status);
|
|
leave;
|
|
}
|
|
|
|
if ( FileBasicInformationData.FileAttributes & FILE_ATTRIBUTE_READONLY ) {
|
|
ULONG attributes = FileBasicInformationData.FileAttributes;
|
|
|
|
RtlZeroMemory( &FileBasicInformationData,
|
|
sizeof(FileBasicInformationData)
|
|
);
|
|
FileBasicInformationData.FileAttributes = FILE_ATTRIBUTE_NORMAL;
|
|
(VOID) NtSetInformationFile(
|
|
hTargetFile,
|
|
&IoStatus,
|
|
&FileBasicInformationData,
|
|
sizeof(FileBasicInformationData),
|
|
FileBasicInformation
|
|
);
|
|
Status = NtCreateFile(
|
|
&DestFile,
|
|
DesiredAccess,
|
|
&ObjectAttributes,
|
|
&IoStatus,
|
|
lpFileSize,
|
|
0,
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
|
|
Disposition,
|
|
FlagsAndAttributes,
|
|
(PVOID)NULL,
|
|
0);
|
|
FileBasicInformationData.FileAttributes = attributes;
|
|
(VOID) NtSetInformationFile(
|
|
hTargetFile,
|
|
&IoStatus,
|
|
&FileBasicInformationData,
|
|
sizeof(FileBasicInformationData),
|
|
FileBasicInformation
|
|
);
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
BaseSetLastNTError(Status);
|
|
leave;
|
|
}
|
|
} else {
|
|
leave;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Adjust the file length in the case of a destination open with the
|
|
// reparse behavior inhibited. This is needed because of the incompatibility
|
|
// between FILE_OPEN_REPARSE_POINT and FILE_OVERWRITE_IF.
|
|
//
|
|
|
|
if ( OpenFileAsReparsePoint ) {
|
|
if ( !(*lpCopyFlags & COPY_FILE_FAIL_IF_EXISTS) ||
|
|
!(Restartable && (lpRestartState->LastKnownGoodOffset.QuadPart)) ) {
|
|
SetFilePointer(DestFile,0,NULL,FILE_BEGIN);
|
|
}
|
|
}
|
|
|
|
} // if ( !ARGUMENT_PRESENT(hTargetFile) ) ... else
|
|
|
|
//
|
|
// Adjust the notion of restartability and chunk size based on whether
|
|
// or not one of the files is remote.
|
|
//
|
|
|
|
if ( Restartable || lpFileSize->QuadPart >= BASE_COPY_FILE_CHUNK ) {
|
|
if ( BasepRemoteFile(hSourceFile,DestFile) ) {
|
|
*lpCopySize = BASE_COPY_FILE_CHUNK - 4096;
|
|
} else if ( Restartable ) {
|
|
*lpCopyFlags &= ~COPY_FILE_RESTARTABLE;
|
|
Restartable = FALSE;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Preallocate the size of this file/stream so that extends do not
|
|
// occur.
|
|
//
|
|
|
|
if ( !(Restartable && lpRestartState->LastKnownGoodOffset.QuadPart) &&
|
|
lpFileSize->QuadPart) {
|
|
|
|
EndOfFileInformation.EndOfFile = *lpFileSize;
|
|
Status = NtSetInformationFile(
|
|
DestFile,
|
|
&IoStatus,
|
|
&EndOfFileInformation,
|
|
sizeof(EndOfFileInformation),
|
|
FileEndOfFileInformation
|
|
);
|
|
if ( Status == STATUS_DISK_FULL ) {
|
|
BaseSetLastNTError(Status);
|
|
BaseMarkFileForDelete(
|
|
DestFile,
|
|
FileBasicInformationData.FileAttributes
|
|
);
|
|
CloseHandle(DestFile);
|
|
DestFile = INVALID_HANDLE_VALUE;
|
|
leave;
|
|
}
|
|
}
|
|
|
|
//
|
|
// If the caller has a progress routine, invoke it and indicate that the
|
|
// output file or alternate data stream has been created. Note that a
|
|
// stream number of 1 means that the file itself has been created.
|
|
//
|
|
|
|
BytesWritten.QuadPart = 0;
|
|
if ( Context ) {
|
|
if ( Context->lpProgressRoutine ) {
|
|
Context->dwStreamNumber += 1;
|
|
ReturnCode = Context->lpProgressRoutine(
|
|
Context->TotalFileSize,
|
|
Context->TotalBytesTransferred,
|
|
*lpFileSize,
|
|
BytesWritten,
|
|
Context->dwStreamNumber,
|
|
CALLBACK_STREAM_SWITCH,
|
|
hSourceFile,
|
|
DestFile,
|
|
Context->lpData
|
|
);
|
|
} else {
|
|
ReturnCode = PROGRESS_CONTINUE;
|
|
}
|
|
|
|
if ( ReturnCode == PROGRESS_CANCEL ||
|
|
(Context->lpCancel && *Context->lpCancel) ) {
|
|
BaseMarkFileForDelete(
|
|
hTargetFile ? hTargetFile : DestFile,
|
|
FileBasicInformationData.FileAttributes
|
|
);
|
|
BaseSetLastNTError(STATUS_REQUEST_ABORTED);
|
|
leave;
|
|
}
|
|
|
|
if ( ReturnCode == PROGRESS_STOP ) {
|
|
BaseSetLastNTError(STATUS_REQUEST_ABORTED);
|
|
leave;
|
|
}
|
|
|
|
if ( ReturnCode == PROGRESS_QUIET ) {
|
|
Context = NULL;
|
|
*lpCopyFileContext = NULL;
|
|
}
|
|
}
|
|
|
|
|
|
if (!Restartable) {
|
|
|
|
while (!lpFileSize->HighPart && (lpFileSize->LowPart < TWO56K)) {
|
|
|
|
// If there's nothing to copy, then we're done (this happens when
|
|
// copying directory files, as there's no unnamed data stream).
|
|
|
|
if( lpFileSize->LowPart == 0 ) {
|
|
ReturnValue = TRUE;
|
|
leave;
|
|
}
|
|
|
|
//
|
|
// Create a section and map the source file. If anything fails,
|
|
// then drop into an I/O system copy mode.
|
|
//
|
|
|
|
Status = NtCreateSection(
|
|
&Section,
|
|
SECTION_ALL_ACCESS,
|
|
NULL,
|
|
NULL,
|
|
PAGE_READONLY,
|
|
SEC_COMMIT,
|
|
hSourceFile
|
|
);
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
break;
|
|
}
|
|
|
|
SectionOffset.LowPart = 0;
|
|
SectionOffset.HighPart = 0;
|
|
ViewSize = 0;
|
|
BigViewSize = 0;
|
|
|
|
Status = NtMapViewOfSection(
|
|
Section,
|
|
NtCurrentProcess(),
|
|
&SourceBase,
|
|
0L,
|
|
0L,
|
|
&SectionOffset,
|
|
&BigViewSize,
|
|
ViewShare,
|
|
0L,
|
|
PAGE_READONLY
|
|
);
|
|
NtClose(Section);
|
|
Section = NULL;
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
break;
|
|
}
|
|
|
|
//
|
|
// note that this is OK since ViewSize will never be > 256k in this path
|
|
//
|
|
|
|
ViewSize = (ULONG)BigViewSize;
|
|
|
|
//
|
|
// Everything is mapped, so copy the stream
|
|
//
|
|
|
|
SourceBuffer = SourceBase;
|
|
BytesToWrite = lpFileSize->LowPart;
|
|
|
|
//
|
|
// Since we are playing with user memory here, the user
|
|
// may decommit or unmap it on us. We wrap the access
|
|
// in try/except to clean up if anything goes wrong
|
|
//
|
|
// We set ReturnCode inside the try/except so that we
|
|
// can detect failure and leave from the enclosing try/finally.
|
|
//
|
|
|
|
ReturnCode = TRUE;
|
|
|
|
try {
|
|
|
|
while (BytesToWrite) {
|
|
if (BytesToWrite > *lpCopySize) {
|
|
ViewSize = *lpCopySize;
|
|
} else {
|
|
ViewSize = BytesToWrite;
|
|
}
|
|
|
|
if ( !WriteFile(DestFile,SourceBuffer,ViewSize, &ViewSize, NULL) ) {
|
|
if ( !ARGUMENT_PRESENT(hTargetFile) &&
|
|
GetLastError() != ERROR_NO_MEDIA_IN_DRIVE ) {
|
|
|
|
BaseMarkFileForDelete(
|
|
DestFile,
|
|
FileBasicInformationData.FileAttributes
|
|
);
|
|
}
|
|
ReturnCode = PROGRESS_STOP;
|
|
leave;
|
|
}
|
|
|
|
BytesToWrite -= ViewSize;
|
|
SourceBuffer += ViewSize;
|
|
|
|
//
|
|
// If the caller has a progress routine, invoke it for this
|
|
// chunk's completion.
|
|
//
|
|
|
|
if ( Context ) {
|
|
if ( Context->lpProgressRoutine ) {
|
|
BytesWritten.QuadPart += ViewSize;
|
|
Context->TotalBytesTransferred.QuadPart += ViewSize;
|
|
ReturnCode = Context->lpProgressRoutine(
|
|
Context->TotalFileSize,
|
|
Context->TotalBytesTransferred,
|
|
*lpFileSize,
|
|
BytesWritten,
|
|
Context->dwStreamNumber,
|
|
CALLBACK_CHUNK_FINISHED,
|
|
hSourceFile,
|
|
DestFile,
|
|
Context->lpData
|
|
);
|
|
} else {
|
|
ReturnCode = PROGRESS_CONTINUE;
|
|
}
|
|
|
|
if ( ReturnCode == PROGRESS_CANCEL ||
|
|
(Context->lpCancel && *Context->lpCancel) ) {
|
|
if ( !ARGUMENT_PRESENT(hTargetFile) ) {
|
|
BaseMarkFileForDelete(
|
|
hTargetFile ? hTargetFile : DestFile,
|
|
FileBasicInformationData.FileAttributes
|
|
);
|
|
BaseSetLastNTError(STATUS_REQUEST_ABORTED);
|
|
}
|
|
ReturnCode = PROGRESS_STOP;
|
|
leave;
|
|
}
|
|
|
|
if ( ReturnCode == PROGRESS_STOP ) {
|
|
BaseSetLastNTError(STATUS_REQUEST_ABORTED);
|
|
ReturnCode = PROGRESS_STOP;
|
|
leave;
|
|
}
|
|
|
|
if ( ReturnCode == PROGRESS_QUIET ) {
|
|
Context = NULL;
|
|
*lpCopyFileContext = NULL;
|
|
}
|
|
}
|
|
} // while (BytesToWrite)
|
|
|
|
} except(EXCEPTION_EXECUTE_HANDLER) {
|
|
if ( !ARGUMENT_PRESENT(hTargetFile) ) {
|
|
BaseMarkFileForDelete(
|
|
DestFile,
|
|
FileBasicInformationData.FileAttributes
|
|
);
|
|
}
|
|
BaseSetLastNTError(GetExceptionCode());
|
|
ReturnCode = PROGRESS_STOP;
|
|
}
|
|
|
|
if (ReturnCode != PROGRESS_STOP) {
|
|
ReturnValue = TRUE;
|
|
}
|
|
|
|
leave;
|
|
|
|
} // while (!lpFileSize->HighPart && (lpFileSize->LowPart < TWO56K)
|
|
} // if (!Restartable)
|
|
|
|
if ( Restartable ) {
|
|
|
|
//
|
|
// A restartable operation is being performed. Reset the state
|
|
// of the copy to the last known good offset that was written
|
|
// to the output file to continue the operation.
|
|
//
|
|
|
|
SetFilePointer(
|
|
hSourceFile,
|
|
lpRestartState->LastKnownGoodOffset.LowPart,
|
|
&lpRestartState->LastKnownGoodOffset.HighPart,
|
|
FILE_BEGIN
|
|
);
|
|
SetFilePointer(
|
|
DestFile,
|
|
lpRestartState->LastKnownGoodOffset.LowPart,
|
|
&lpRestartState->LastKnownGoodOffset.HighPart,
|
|
FILE_BEGIN
|
|
);
|
|
BytesWritten.QuadPart = lpRestartState->LastKnownGoodOffset.QuadPart;
|
|
}
|
|
|
|
IoDestBase = RtlAllocateHeap(
|
|
RtlProcessHeap(),
|
|
MAKE_TAG( TMP_TAG ),
|
|
*lpCopySize
|
|
);
|
|
if ( !IoDestBase ) {
|
|
if ( !ARGUMENT_PRESENT(hTargetFile) && !Restartable ) {
|
|
BaseMarkFileForDelete(
|
|
DestFile,
|
|
FileBasicInformationData.FileAttributes
|
|
);
|
|
}
|
|
BaseSetLastNTError(STATUS_NO_MEMORY);
|
|
leave;
|
|
}
|
|
|
|
|
|
|
|
do {
|
|
|
|
BlockSize = *lpCopySize;
|
|
fSkipBlock = FALSE;
|
|
|
|
|
|
if (!fSkipBlock) {
|
|
b = ReadFile(hSourceFile,IoDestBase,BlockSize, &ViewSize, NULL);
|
|
} else {
|
|
LARGE_INTEGER BytesRead;
|
|
BytesRead = BytesWritten;
|
|
|
|
if (BytesRead.QuadPart > lpFileSize->QuadPart) {
|
|
BlockSize = 0;
|
|
} else if (BytesRead.QuadPart + BlockSize >= lpFileSize->QuadPart) {
|
|
BlockSize = (ULONG)(lpFileSize->QuadPart - BytesRead.QuadPart);
|
|
}
|
|
|
|
BytesRead.QuadPart += BlockSize;
|
|
if ( SetFilePointer(hSourceFile,
|
|
BytesRead.LowPart,
|
|
&BytesRead.HighPart,
|
|
FILE_BEGIN) != 0xffffffff ) {
|
|
} else {
|
|
if (GetLastError() != NO_ERROR)
|
|
b = FALSE;
|
|
}
|
|
ViewSize = BlockSize;
|
|
}
|
|
|
|
if (!b || !ViewSize)
|
|
break;
|
|
|
|
if (!fSkipBlock) {
|
|
if ( !WriteFile(DestFile,IoDestBase,ViewSize, &ViewSize, NULL) ) {
|
|
if ( !ARGUMENT_PRESENT(hTargetFile) &&
|
|
GetLastError() != ERROR_NO_MEDIA_IN_DRIVE &&
|
|
!Restartable ) {
|
|
|
|
BaseMarkFileForDelete(
|
|
DestFile,
|
|
FileBasicInformationData.FileAttributes
|
|
);
|
|
}
|
|
|
|
leave;
|
|
}
|
|
BytesWritten.QuadPart += ViewSize;
|
|
} else {
|
|
BytesWritten.QuadPart += ViewSize;
|
|
if (( SetFilePointer(DestFile,
|
|
BytesWritten.LowPart,
|
|
&BytesWritten.HighPart,
|
|
FILE_BEGIN) == 0xffffffff ) &&
|
|
( GetLastError() != NO_ERROR )) {
|
|
b = FALSE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
WriteCount++;
|
|
|
|
if ( Restartable &&
|
|
(((WriteCount & 3) == 0 &&
|
|
BytesWritten.QuadPart ) ||
|
|
BytesWritten.QuadPart == lpFileSize->QuadPart) ) {
|
|
|
|
LARGE_INTEGER SavedOffset;
|
|
DWORD Bytes;
|
|
HANDLE DestinationFile = hTargetFile ? hTargetFile : DestFile;
|
|
|
|
//
|
|
// Another 256kb has been written to the target file, or
|
|
// this stream of the file has been completely copied, so
|
|
// update the restart state in the output file accordingly.
|
|
//
|
|
|
|
NtFlushBuffersFile(DestinationFile,&IoStatus);
|
|
SavedOffset.QuadPart = BytesWritten.QuadPart;
|
|
SetFilePointer(DestinationFile,0,NULL,FILE_BEGIN);
|
|
lpRestartState->LastKnownGoodOffset.QuadPart = BytesWritten.QuadPart;
|
|
lpRestartState->Checksum = BasepChecksum((PUSHORT)lpRestartState,FIELD_OFFSET(RESTART_STATE,Checksum) >> 1);
|
|
b = WriteFile(
|
|
DestinationFile,
|
|
lpRestartState,
|
|
sizeof(RESTART_STATE),
|
|
&Bytes,
|
|
NULL
|
|
);
|
|
if ( !b || Bytes != sizeof(RESTART_STATE) ) {
|
|
leave;
|
|
}
|
|
NtFlushBuffersFile(DestinationFile,&IoStatus);
|
|
SetFilePointer(
|
|
DestinationFile,
|
|
SavedOffset.LowPart,
|
|
&SavedOffset.HighPart,
|
|
FILE_BEGIN
|
|
);
|
|
}
|
|
|
|
//
|
|
// If the caller has a progress routine, invoke it for this
|
|
// chunk's completion.
|
|
//
|
|
|
|
if ( Context ) {
|
|
if ( Context->lpProgressRoutine ) {
|
|
Context->TotalBytesTransferred.QuadPart += ViewSize;
|
|
ReturnCode = Context->lpProgressRoutine(
|
|
Context->TotalFileSize,
|
|
Context->TotalBytesTransferred,
|
|
*lpFileSize,
|
|
BytesWritten,
|
|
Context->dwStreamNumber,
|
|
CALLBACK_CHUNK_FINISHED,
|
|
hSourceFile,
|
|
DestFile,
|
|
Context->lpData
|
|
);
|
|
} else {
|
|
ReturnCode = PROGRESS_CONTINUE;
|
|
}
|
|
if ( ReturnCode == PROGRESS_CANCEL ||
|
|
(Context->lpCancel && *Context->lpCancel) ) {
|
|
if ( !ARGUMENT_PRESENT(hTargetFile) ) {
|
|
BaseMarkFileForDelete(
|
|
hTargetFile ? hTargetFile : DestFile,
|
|
FileBasicInformationData.FileAttributes
|
|
);
|
|
BaseSetLastNTError(STATUS_REQUEST_ABORTED);
|
|
leave;
|
|
}
|
|
}
|
|
|
|
if ( ReturnCode == PROGRESS_STOP ) {
|
|
BaseSetLastNTError(STATUS_REQUEST_ABORTED);
|
|
leave;
|
|
}
|
|
|
|
if ( ReturnCode == PROGRESS_QUIET ) {
|
|
Context = NULL;
|
|
*lpCopyFileContext = NULL;
|
|
}
|
|
}
|
|
} while (TRUE);
|
|
|
|
if ( !b && !ARGUMENT_PRESENT(hTargetFile) ) {
|
|
if ( !Restartable ) {
|
|
BaseMarkFileForDelete(
|
|
DestFile,
|
|
FileBasicInformationData.FileAttributes
|
|
);
|
|
}
|
|
leave;
|
|
}
|
|
|
|
ReturnValue = TRUE;
|
|
} finally {
|
|
if ( DestFile != INVALID_HANDLE_VALUE ) {
|
|
*lpDestFile = DestFile;
|
|
}
|
|
if ( Section ) {
|
|
NtClose(Section);
|
|
}
|
|
if ( SourceBase ) {
|
|
NtUnmapViewOfSection(NtCurrentProcess(),SourceBase);
|
|
}
|
|
RtlFreeHeap(RtlProcessHeap(), 0,IoDestBase);
|
|
RtlFreeHeap(RtlProcessHeap(), 0, DestFileNameBuffer );
|
|
RtlFreeHeap(RtlProcessHeap(), 0, EaBuffer );
|
|
|
|
// If the TEB buffer was saved, restore it now.
|
|
if( lpExistingFileName == SaveStaticUnicodeBuffer ) {
|
|
|
|
memcpy( NtCurrentTeb()->StaticUnicodeBuffer,
|
|
SaveStaticUnicodeBuffer,
|
|
STATIC_UNICODE_BUFFER_LENGTH );
|
|
}
|
|
|
|
}
|
|
|
|
return ReturnValue;
|
|
}
|
|
|
|
HANDLE
|
|
WINAPI
|
|
ReOpenFile(
|
|
HANDLE hOriginalFile,
|
|
DWORD dwDesiredAccess,
|
|
DWORD dwShareMode,
|
|
DWORD dwFlags
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This API allows an application to reopen a file with different access, share modes
|
|
and flags given an already open handle. This API should be used if the application wants
|
|
to ensure that the original file does not go away but wants to reopen it with
|
|
|
|
Arguments:
|
|
|
|
hOriginalFile - Supplies the handle to the original file relative to which
|
|
we open a new handle.
|
|
|
|
dwDesiredAccess - Supplies the caller's desired access to the file. Any combination of
|
|
flags can be passed in (like FILE_READ_ATTRIBUTES)
|
|
|
|
Possible DesiredAccess Flags:
|
|
|
|
GENERIC_READ - Read access to the file is requested. This
|
|
allows data to be read from the file and the file pointer to
|
|
be modified.
|
|
|
|
GENERIC_WRITE - Write access to the file is requested. This
|
|
allows data to be written to the file and the file pointer to
|
|
be modified.
|
|
|
|
|
|
dwShareMode - Supplies a set of flags that indicates how this file is
|
|
to be shared with other openers of the file. A value of zero
|
|
for this parameter indicates no sharing of the file, or
|
|
exclusive access to the file is to occur.
|
|
|
|
ShareMode Flags:
|
|
|
|
FILE_SHARE_READ - Other open operations may be performed on the
|
|
file for read access.
|
|
|
|
FILE_SHARE_WRITE - Other open operations may be performed on the
|
|
file for write access.
|
|
|
|
FILE_SHARE_DELETE - Other open operations may be performed on the
|
|
file for delete access.
|
|
|
|
dwFlags - Specifies flags and attributes for the file.
|
|
|
|
The attributes are not accepted by this API as they are used only for Creating a file
|
|
This API reopens an existing file. All FILE_ATTRIBUTE_* flags are not allowed.
|
|
|
|
dwFlagsAndAttributes Flags:
|
|
|
|
|
|
FILE_FLAG_WRITE_THROUGH - Indicates that the system should
|
|
always write through any intermediate cache and go directly
|
|
to the file. The system may still cache writes, but may not
|
|
lazily flush the writes.
|
|
|
|
FILE_FLAG_OVERLAPPED - Indicates that the system should initialize
|
|
the file so that ReadFile and WriteFile operations that may
|
|
take a significant time to complete will return ERROR_IO_PENDING.
|
|
An event will be set to the signalled state when the operation
|
|
completes. When FILE_FLAG_OVERLAPPED is specified the system will
|
|
not maintain the file pointer. The position to read/write from
|
|
is passed to the system as part of the OVERLAPPED structure
|
|
which is an optional parameter to ReadFile and WriteFile.
|
|
|
|
FILE_FLAG_NO_BUFFERING - Indicates that the file is to be opened
|
|
with no intermediate buffering or caching done by the
|
|
system. Reads and writes to the file must be done on sector
|
|
boundries. Buffer addresses for reads and writes must be
|
|
aligned on at least disk sector boundries in memory.
|
|
|
|
FILE_FLAG_RANDOM_ACCESS - Indicates that access to the file may
|
|
be random. The system cache manager may use this to influence
|
|
its caching strategy for this file.
|
|
|
|
FILE_FLAG_SEQUENTIAL_SCAN - Indicates that access to the file
|
|
may be sequential. The system cache manager may use this to
|
|
influence its caching strategy for this file. The file may
|
|
in fact be accessed randomly, but the cache manager may
|
|
optimize its cacheing policy for sequential access.
|
|
|
|
FILE_FLAG_DELETE_ON_CLOSE - Indicates that the file is to be
|
|
automatically deleted when the last handle to it is closed.
|
|
|
|
FILE_FLAG_BACKUP_SEMANTICS - Indicates that the file is being opened
|
|
or created for the purposes of either a backup or a restore
|
|
operation. Thus, the system should make whatever checks are
|
|
appropriate to ensure that the caller is able to override
|
|
whatever security checks have been placed on the file to allow
|
|
this to happen.
|
|
|
|
FILE_FLAG_POSIX_SEMANTICS - Indicates that the file being opened
|
|
should be accessed in a manner compatible with the rules used
|
|
by POSIX. This includes allowing multiple files with the same
|
|
name, differing only in case. WARNING: Use of this flag may
|
|
render it impossible for a DOS, WIN-16, or WIN-32 application
|
|
to access the file.
|
|
|
|
FILE_FLAG_OPEN_REPARSE_POINT - Indicates that the file being opened
|
|
should be accessed as if it were a reparse point. WARNING: Use
|
|
of this flag may inhibit the operation of file system filter drivers
|
|
present in the I/O subsystem.
|
|
|
|
FILE_FLAG_OPEN_NO_RECALL - Indicates that all the state of the file
|
|
should be acessed without changing its storage location. Thus,
|
|
in the case of files that have parts of its state stored at a
|
|
remote servicer, no permanent recall of data is to happen.
|
|
|
|
Security Quality of Service information may also be specified in
|
|
the dwFlagsAndAttributes parameter. These bits are meaningful
|
|
only if the file being opened is the client side of a Named
|
|
Pipe. Otherwise they are ignored.
|
|
|
|
SECURITY_SQOS_PRESENT - Indicates that the Security Quality of
|
|
Service bits contain valid values.
|
|
|
|
Impersonation Levels:
|
|
|
|
SECURITY_ANONYMOUS - Specifies that the client should be impersonated
|
|
at Anonymous impersonation level.
|
|
|
|
SECURITY_IDENTIFICAION - Specifies that the client should be impersonated
|
|
at Identification impersonation level.
|
|
|
|
SECURITY_IMPERSONATION - Specifies that the client should be impersonated
|
|
at Impersonation impersonation level.
|
|
|
|
SECURITY_DELEGATION - Specifies that the client should be impersonated
|
|
at Delegation impersonation level.
|
|
|
|
Context Tracking:
|
|
|
|
SECURITY_CONTEXT_TRACKING - A boolean flag that when set,
|
|
specifies that the Security Tracking Mode should be
|
|
Dynamic, otherwise Static.
|
|
|
|
SECURITY_EFFECTIVE_ONLY - A boolean flag indicating whether
|
|
the entire security context of the client is to be made
|
|
available to the server or only the effective aspects of
|
|
the context.
|
|
|
|
Return Value:
|
|
|
|
Not -1 - Returns an open handle to the specified file. Subsequent
|
|
access to the file is controlled by the DesiredAccess parameter.
|
|
|
|
0xffffffff - The operation failed. Extended error status is available
|
|
using GetLastError.
|
|
|
|
--*/
|
|
{
|
|
ULONG CreateFlags = 0;
|
|
ULONG CreateDisposition;
|
|
NTSTATUS Status;
|
|
OBJECT_ATTRIBUTES Obja;
|
|
HANDLE Handle;
|
|
IO_STATUS_BLOCK IoStatusBlock;
|
|
DWORD SQOSFlags;
|
|
SECURITY_IMPERSONATION_LEVEL ImpersonationLevel = 0;
|
|
SECURITY_QUALITY_OF_SERVICE SecurityQualityOfService;
|
|
UNICODE_STRING FileName;
|
|
|
|
//
|
|
// Don't support console handles.
|
|
//
|
|
|
|
if (CONSOLE_HANDLE(hOriginalFile)) {
|
|
BaseSetLastNTError(STATUS_INVALID_HANDLE);
|
|
return INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
//
|
|
// The attributes are useless as this reopen of an existing file.
|
|
//
|
|
|
|
if (dwFlags & FILE_ATTRIBUTE_VALID_FLAGS) {
|
|
BaseSetLastNTError(STATUS_INVALID_PARAMETER);
|
|
return INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
//
|
|
// Initialize all the create flags from the Attribute flags.
|
|
//
|
|
|
|
CreateFlags |= (dwFlags & FILE_FLAG_NO_BUFFERING ? FILE_NO_INTERMEDIATE_BUFFERING : 0 );
|
|
CreateFlags |= (dwFlags & FILE_FLAG_WRITE_THROUGH ? FILE_WRITE_THROUGH : 0 );
|
|
CreateFlags |= (dwFlags & FILE_FLAG_OVERLAPPED ? 0 : FILE_SYNCHRONOUS_IO_NONALERT );
|
|
CreateFlags |= (dwFlags & FILE_FLAG_SEQUENTIAL_SCAN ? FILE_SEQUENTIAL_ONLY : 0 );
|
|
CreateFlags |= (dwFlags & FILE_FLAG_RANDOM_ACCESS ? FILE_RANDOM_ACCESS : 0 );
|
|
CreateFlags |= (dwFlags & FILE_FLAG_BACKUP_SEMANTICS ? FILE_OPEN_FOR_BACKUP_INTENT : 0 );
|
|
CreateFlags |= (dwFlags & FILE_FLAG_OPEN_REPARSE_POINT ? FILE_OPEN_REPARSE_POINT : 0 );
|
|
CreateFlags |= (dwFlags & FILE_FLAG_OPEN_NO_RECALL ? FILE_OPEN_NO_RECALL : 0 );
|
|
|
|
if ( dwFlags & FILE_FLAG_DELETE_ON_CLOSE ) {
|
|
CreateFlags |= FILE_DELETE_ON_CLOSE;
|
|
dwDesiredAccess |= DELETE;
|
|
}
|
|
|
|
CreateFlags |= FILE_NON_DIRECTORY_FILE;
|
|
CreateDisposition = FILE_OPEN;
|
|
|
|
RtlInitUnicodeString( &FileName, L"");
|
|
|
|
//
|
|
// Pass a NULL name relative to the original handle.
|
|
//
|
|
|
|
InitializeObjectAttributes(
|
|
&Obja,
|
|
&FileName,
|
|
dwFlags & FILE_FLAG_POSIX_SEMANTICS ? 0 : OBJ_CASE_INSENSITIVE,
|
|
hOriginalFile, // Related handle
|
|
NULL
|
|
);
|
|
|
|
SQOSFlags = dwFlags & SECURITY_VALID_SQOS_FLAGS;
|
|
|
|
if ( SQOSFlags & SECURITY_SQOS_PRESENT ) {
|
|
|
|
SQOSFlags &= ~SECURITY_SQOS_PRESENT;
|
|
|
|
if (SQOSFlags & SECURITY_CONTEXT_TRACKING) {
|
|
|
|
SecurityQualityOfService.ContextTrackingMode = (SECURITY_CONTEXT_TRACKING_MODE) TRUE;
|
|
SQOSFlags &= ~SECURITY_CONTEXT_TRACKING;
|
|
|
|
} else {
|
|
|
|
SecurityQualityOfService.ContextTrackingMode = (SECURITY_CONTEXT_TRACKING_MODE) FALSE;
|
|
}
|
|
|
|
if (SQOSFlags & SECURITY_EFFECTIVE_ONLY) {
|
|
|
|
SecurityQualityOfService.EffectiveOnly = TRUE;
|
|
SQOSFlags &= ~SECURITY_EFFECTIVE_ONLY;
|
|
|
|
} else {
|
|
|
|
SecurityQualityOfService.EffectiveOnly = FALSE;
|
|
}
|
|
|
|
SecurityQualityOfService.ImpersonationLevel = SQOSFlags >> 16;
|
|
|
|
|
|
} else {
|
|
|
|
SecurityQualityOfService.ContextTrackingMode = SECURITY_DYNAMIC_TRACKING;
|
|
SecurityQualityOfService.ImpersonationLevel = SecurityImpersonation;
|
|
SecurityQualityOfService.EffectiveOnly = TRUE;
|
|
}
|
|
|
|
SecurityQualityOfService.Length = sizeof( SECURITY_QUALITY_OF_SERVICE );
|
|
Obja.SecurityQualityOfService = &SecurityQualityOfService;
|
|
|
|
Status = NtCreateFile(
|
|
&Handle,
|
|
(ACCESS_MASK)dwDesiredAccess | SYNCHRONIZE | FILE_READ_ATTRIBUTES,
|
|
&Obja,
|
|
&IoStatusBlock,
|
|
NULL,
|
|
0,
|
|
dwShareMode,
|
|
CreateDisposition,
|
|
CreateFlags,
|
|
NULL,
|
|
0
|
|
);
|
|
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
BaseSetLastNTError(Status);
|
|
return INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
SetLastError(0);
|
|
|
|
return Handle;
|
|
}
|
|
|
|
HANDLE
|
|
WINAPI
|
|
CreateFileA(
|
|
LPCSTR lpFileName,
|
|
DWORD dwDesiredAccess,
|
|
DWORD dwShareMode,
|
|
LPSECURITY_ATTRIBUTES lpSecurityAttributes,
|
|
DWORD dwCreationDisposition,
|
|
DWORD dwFlagsAndAttributes,
|
|
HANDLE hTemplateFile
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
ANSI thunk to CreateFileW
|
|
|
|
--*/
|
|
|
|
{
|
|
|
|
PUNICODE_STRING Unicode;
|
|
|
|
Unicode = Basep8BitStringToStaticUnicodeString( lpFileName );
|
|
if (Unicode == NULL) {
|
|
return INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
return ( CreateFileW( Unicode->Buffer,
|
|
dwDesiredAccess,
|
|
dwShareMode,
|
|
lpSecurityAttributes,
|
|
dwCreationDisposition,
|
|
dwFlagsAndAttributes,
|
|
hTemplateFile
|
|
)
|
|
);
|
|
}
|
|
|
|
HANDLE
|
|
WINAPI
|
|
CreateFileW(
|
|
LPCWSTR lpFileName,
|
|
DWORD dwDesiredAccess,
|
|
DWORD dwShareMode,
|
|
LPSECURITY_ATTRIBUTES lpSecurityAttributes,
|
|
DWORD dwCreationDisposition,
|
|
DWORD dwFlagsAndAttributes,
|
|
HANDLE hTemplateFile
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
A file can be created, opened, or truncated, and a handle opened to
|
|
access the new file using CreateFile.
|
|
|
|
This API is used to create or open a file and obtain a handle to it
|
|
that allows reading data, writing data, and moving the file pointer.
|
|
|
|
This API allows the caller to specify the following creation
|
|
dispositions:
|
|
|
|
- Create a new file and fail if the file exists ( CREATE_NEW )
|
|
|
|
- Create a new file and succeed if it exists ( CREATE_ALWAYS )
|
|
|
|
- Open an existing file ( OPEN_EXISTING )
|
|
|
|
- Open and existing file or create it if it does not exist (
|
|
OPEN_ALWAYS )
|
|
|
|
- Truncate and existing file ( TRUNCATE_EXISTING )
|
|
|
|
If this call is successful, a handle is returned that has
|
|
appropriate access to the specified file.
|
|
|
|
If as a result of this call, a file is created,
|
|
|
|
- The attributes of the file are determined by the value of the
|
|
FileAttributes parameter or'd with the FILE_ATTRIBUTE_ARCHIVE bit.
|
|
|
|
- The length of the file will be set to zero.
|
|
|
|
- If the hTemplateFile parameter is specified, any extended
|
|
attributes associated with the file are assigned to the new file.
|
|
|
|
If a new file is not created, then the hTemplateFile is ignored as
|
|
are any extended attributes.
|
|
|
|
For DOS based systems running share.exe the file sharing semantics
|
|
work as described above. Without share.exe no share level
|
|
protection exists.
|
|
|
|
This call is logically equivalent to DOS (int 21h, function 5Bh), or
|
|
DOS (int 21h, function 3Ch) depending on the value of the
|
|
FailIfExists parameter.
|
|
|
|
Arguments:
|
|
|
|
lpFileName - Supplies the file name of the file to open. Depending on
|
|
the value of the FailIfExists parameter, this name may or may
|
|
not already exist.
|
|
|
|
dwDesiredAccess - Supplies the caller's desired access to the file.
|
|
|
|
DesiredAccess Flags:
|
|
|
|
GENERIC_READ - Read access to the file is requested. This
|
|
allows data to be read from the file and the file pointer to
|
|
be modified.
|
|
|
|
GENERIC_WRITE - Write access to the file is requested. This
|
|
allows data to be written to the file and the file pointer to
|
|
be modified.
|
|
|
|
dwShareMode - Supplies a set of flags that indicates how this file is
|
|
to be shared with other openers of the file. A value of zero
|
|
for this parameter indicates no sharing of the file, or
|
|
exclusive access to the file is to occur.
|
|
|
|
ShareMode Flags:
|
|
|
|
FILE_SHARE_READ - Other open operations may be performed on the
|
|
file for read access.
|
|
|
|
FILE_SHARE_WRITE - Other open operations may be performed on the
|
|
file for write access.
|
|
|
|
lpSecurityAttributes - An optional parameter that, if present, and
|
|
supported on the target file system supplies a security
|
|
descriptor for the new file.
|
|
|
|
dwCreationDisposition - Supplies a creation disposition that
|
|
specifies how this call is to operate. This parameter must be
|
|
one of the following values.
|
|
|
|
dwCreationDisposition Value:
|
|
|
|
CREATE_NEW - Create a new file. If the specified file already
|
|
exists, then fail. The attributes for the new file are what
|
|
is specified in the dwFlagsAndAttributes parameter or'd with
|
|
FILE_ATTRIBUTE_ARCHIVE. If the hTemplateFile is specified,
|
|
then any extended attributes associated with that file are
|
|
propogated to the new file.
|
|
|
|
CREATE_ALWAYS - Always create the file. If the file already
|
|
exists, then it is overwritten. The attributes for the new
|
|
file are what is specified in the dwFlagsAndAttributes
|
|
parameter or'd with FILE_ATTRIBUTE_ARCHIVE. If the
|
|
hTemplateFile is specified, then any extended attributes
|
|
associated with that file are propogated to the new file.
|
|
|
|
OPEN_EXISTING - Open the file, but if it does not exist, then
|
|
fail the call.
|
|
|
|
OPEN_ALWAYS - Open the file if it exists. If it does not exist,
|
|
then create the file using the same rules as if the
|
|
disposition were CREATE_NEW.
|
|
|
|
TRUNCATE_EXISTING - Open the file, but if it does not exist,
|
|
then fail the call. Once opened, the file is truncated such
|
|
that its size is zero bytes. This disposition requires that
|
|
the caller open the file with at least GENERIC_WRITE access.
|
|
|
|
dwFlagsAndAttributes - Specifies flags and attributes for the file.
|
|
The attributes are only used when the file is created (as
|
|
opposed to opened or truncated). Any combination of attribute
|
|
flags is acceptable except that all other attribute flags
|
|
override the normal file attribute, FILE_ATTRIBUTE_NORMAL. The
|
|
FILE_ATTRIBUTE_ARCHIVE flag is always implied.
|
|
|
|
dwFlagsAndAttributes Flags:
|
|
|
|
FILE_ATTRIBUTE_NORMAL - A normal file should be created.
|
|
|
|
FILE_ATTRIBUTE_READONLY - A read-only file should be created.
|
|
|
|
FILE_ATTRIBUTE_HIDDEN - A hidden file should be created.
|
|
|
|
FILE_ATTRIBUTE_SYSTEM - A system file should be created.
|
|
|
|
FILE_FLAG_WRITE_THROUGH - Indicates that the system should
|
|
always write through any intermediate cache and go directly
|
|
to the file. The system may still cache writes, but may not
|
|
lazily flush the writes.
|
|
|
|
FILE_FLAG_OVERLAPPED - Indicates that the system should initialize
|
|
the file so that ReadFile and WriteFile operations that may
|
|
take a significant time to complete will return ERROR_IO_PENDING.
|
|
An event will be set to the signalled state when the operation
|
|
completes. When FILE_FLAG_OVERLAPPED is specified the system will
|
|
not maintain the file pointer. The position to read/write from
|
|
is passed to the system as part of the OVERLAPPED structure
|
|
which is an optional parameter to ReadFile and WriteFile.
|
|
|
|
FILE_FLAG_NO_BUFFERING - Indicates that the file is to be opened
|
|
with no intermediate buffering or caching done by the
|
|
system. Reads and writes to the file must be done on sector
|
|
boundries. Buffer addresses for reads and writes must be
|
|
aligned on at least disk sector boundries in memory.
|
|
|
|
FILE_FLAG_RANDOM_ACCESS - Indicates that access to the file may
|
|
be random. The system cache manager may use this to influence
|
|
its caching strategy for this file.
|
|
|
|
FILE_FLAG_SEQUENTIAL_SCAN - Indicates that access to the file
|
|
may be sequential. The system cache manager may use this to
|
|
influence its caching strategy for this file. The file may
|
|
in fact be accessed randomly, but the cache manager may
|
|
optimize its cacheing policy for sequential access.
|
|
|
|
FILE_FLAG_DELETE_ON_CLOSE - Indicates that the file is to be
|
|
automatically deleted when the last handle to it is closed.
|
|
|
|
FILE_FLAG_BACKUP_SEMANTICS - Indicates that the file is being opened
|
|
or created for the purposes of either a backup or a restore
|
|
operation. Thus, the system should make whatever checks are
|
|
appropriate to ensure that the caller is able to override
|
|
whatever security checks have been placed on the file to allow
|
|
this to happen.
|
|
|
|
FILE_FLAG_POSIX_SEMANTICS - Indicates that the file being opened
|
|
should be accessed in a manner compatible with the rules used
|
|
by POSIX. This includes allowing multiple files with the same
|
|
name, differing only in case. WARNING: Use of this flag may
|
|
render it impossible for a DOS, WIN-16, or WIN-32 application
|
|
to access the file.
|
|
|
|
FILE_FLAG_OPEN_REPARSE_POINT - Indicates that the file being opened
|
|
should be accessed as if it were a reparse point. WARNING: Use
|
|
of this flag may inhibit the operation of file system filter drivers
|
|
present in the I/O subsystem.
|
|
|
|
FILE_FLAG_OPEN_NO_RECALL - Indicates that all the state of the file
|
|
should be acessed without changing its storage location. Thus,
|
|
in the case of files that have parts of its state stored at a
|
|
remote servicer, no permanent recall of data is to happen.
|
|
|
|
Security Quality of Service information may also be specified in
|
|
the dwFlagsAndAttributes parameter. These bits are meaningful
|
|
only if the file being opened is the client side of a Named
|
|
Pipe. Otherwise they are ignored.
|
|
|
|
SECURITY_SQOS_PRESENT - Indicates that the Security Quality of
|
|
Service bits contain valid values.
|
|
|
|
Impersonation Levels:
|
|
|
|
SECURITY_ANONYMOUS - Specifies that the client should be impersonated
|
|
at Anonymous impersonation level.
|
|
|
|
SECURITY_IDENTIFICAION - Specifies that the client should be impersonated
|
|
at Identification impersonation level.
|
|
|
|
SECURITY_IMPERSONATION - Specifies that the client should be impersonated
|
|
at Impersonation impersonation level.
|
|
|
|
SECURITY_DELEGATION - Specifies that the client should be impersonated
|
|
at Delegation impersonation level.
|
|
|
|
Context Tracking:
|
|
|
|
SECURITY_CONTEXT_TRACKING - A boolean flag that when set,
|
|
specifies that the Security Tracking Mode should be
|
|
Dynamic, otherwise Static.
|
|
|
|
SECURITY_EFFECTIVE_ONLY - A boolean flag indicating whether
|
|
the entire security context of the client is to be made
|
|
available to the server or only the effective aspects of
|
|
the context.
|
|
|
|
hTemplateFile - An optional parameter, then if specified, supplies a
|
|
handle with GENERIC_READ access to a template file. The
|
|
template file is used to supply extended attributes for the file
|
|
being created. When the new file is created, the relevant attributes
|
|
from the template file are used in creating the new file.
|
|
|
|
Return Value:
|
|
|
|
Not -1 - Returns an open handle to the specified file. Subsequent
|
|
access to the file is controlled by the DesiredAccess parameter.
|
|
|
|
0xffffffff - The operation failed. Extended error status is available
|
|
using GetLastError.
|
|
|
|
--*/
|
|
{
|
|
NTSTATUS Status;
|
|
OBJECT_ATTRIBUTES Obja;
|
|
HANDLE Handle;
|
|
UNICODE_STRING FileName;
|
|
IO_STATUS_BLOCK IoStatusBlock;
|
|
BOOLEAN TranslationStatus;
|
|
RTL_RELATIVE_NAME_U RelativeName;
|
|
PVOID FreeBuffer;
|
|
ULONG CreateDisposition;
|
|
ULONG CreateFlags;
|
|
FILE_ALLOCATION_INFORMATION AllocationInfo;
|
|
FILE_EA_INFORMATION EaInfo;
|
|
PFILE_FULL_EA_INFORMATION EaBuffer;
|
|
ULONG EaSize;
|
|
PCUNICODE_STRING lpConsoleName;
|
|
BOOL bInheritHandle;
|
|
BOOL EndsInSlash;
|
|
DWORD SQOSFlags;
|
|
BOOLEAN ContextTrackingMode = FALSE;
|
|
BOOLEAN EffectiveOnly = FALSE;
|
|
SECURITY_IMPERSONATION_LEVEL ImpersonationLevel = 0;
|
|
SECURITY_QUALITY_OF_SERVICE SecurityQualityOfService;
|
|
|
|
switch ( dwCreationDisposition ) {
|
|
case CREATE_NEW :
|
|
CreateDisposition = FILE_CREATE;
|
|
break;
|
|
case CREATE_ALWAYS :
|
|
CreateDisposition = FILE_OVERWRITE_IF;
|
|
break;
|
|
case OPEN_EXISTING :
|
|
CreateDisposition = FILE_OPEN;
|
|
break;
|
|
case OPEN_ALWAYS :
|
|
CreateDisposition = FILE_OPEN_IF;
|
|
break;
|
|
case TRUNCATE_EXISTING :
|
|
CreateDisposition = FILE_OPEN;
|
|
if ( !(dwDesiredAccess & GENERIC_WRITE) ) {
|
|
BaseSetLastNTError(STATUS_INVALID_PARAMETER);
|
|
return INVALID_HANDLE_VALUE;
|
|
}
|
|
break;
|
|
default :
|
|
BaseSetLastNTError(STATUS_INVALID_PARAMETER);
|
|
return INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
// temporary routing code
|
|
|
|
RtlInitUnicodeString(&FileName,lpFileName);
|
|
|
|
if ( FileName.Length > 1 && lpFileName[(FileName.Length >> 1)-1] == (WCHAR)'\\' ) {
|
|
EndsInSlash = TRUE;
|
|
}
|
|
else {
|
|
EndsInSlash = FALSE;
|
|
}
|
|
|
|
if ((lpConsoleName = BaseIsThisAConsoleName(&FileName,dwDesiredAccess)) ) {
|
|
|
|
Handle = INVALID_HANDLE_VALUE;
|
|
|
|
bInheritHandle = FALSE;
|
|
if ( ARGUMENT_PRESENT(lpSecurityAttributes) ) {
|
|
bInheritHandle = lpSecurityAttributes->bInheritHandle;
|
|
}
|
|
|
|
Handle = OpenConsoleW(lpConsoleName->Buffer,
|
|
dwDesiredAccess,
|
|
bInheritHandle,
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE //dwShareMode
|
|
);
|
|
|
|
if ( Handle == INVALID_HANDLE_VALUE ) {
|
|
BaseSetLastNTError(STATUS_ACCESS_DENIED);
|
|
return INVALID_HANDLE_VALUE;
|
|
}
|
|
else {
|
|
SetLastError(0);
|
|
return Handle;
|
|
}
|
|
}
|
|
// end temporary code
|
|
|
|
CreateFlags = 0;
|
|
|
|
TranslationStatus = RtlDosPathNameToRelativeNtPathName_U(
|
|
lpFileName,
|
|
&FileName,
|
|
NULL,
|
|
&RelativeName
|
|
);
|
|
|
|
if ( !TranslationStatus ) {
|
|
SetLastError(ERROR_PATH_NOT_FOUND);
|
|
return INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
FreeBuffer = FileName.Buffer;
|
|
|
|
if ( RelativeName.RelativeName.Length ) {
|
|
FileName = RelativeName.RelativeName;
|
|
}
|
|
else {
|
|
RelativeName.ContainingDirectory = NULL;
|
|
}
|
|
|
|
InitializeObjectAttributes(
|
|
&Obja,
|
|
&FileName,
|
|
dwFlagsAndAttributes & FILE_FLAG_POSIX_SEMANTICS ? 0 : OBJ_CASE_INSENSITIVE,
|
|
RelativeName.ContainingDirectory,
|
|
NULL
|
|
);
|
|
|
|
SQOSFlags = dwFlagsAndAttributes & SECURITY_VALID_SQOS_FLAGS;
|
|
|
|
if ( SQOSFlags & SECURITY_SQOS_PRESENT ) {
|
|
|
|
SQOSFlags &= ~SECURITY_SQOS_PRESENT;
|
|
|
|
if (SQOSFlags & SECURITY_CONTEXT_TRACKING) {
|
|
|
|
SecurityQualityOfService.ContextTrackingMode = (SECURITY_CONTEXT_TRACKING_MODE) TRUE;
|
|
SQOSFlags &= ~SECURITY_CONTEXT_TRACKING;
|
|
|
|
} else {
|
|
|
|
SecurityQualityOfService.ContextTrackingMode = (SECURITY_CONTEXT_TRACKING_MODE) FALSE;
|
|
}
|
|
|
|
if (SQOSFlags & SECURITY_EFFECTIVE_ONLY) {
|
|
|
|
SecurityQualityOfService.EffectiveOnly = TRUE;
|
|
SQOSFlags &= ~SECURITY_EFFECTIVE_ONLY;
|
|
|
|
} else {
|
|
|
|
SecurityQualityOfService.EffectiveOnly = FALSE;
|
|
}
|
|
|
|
SecurityQualityOfService.ImpersonationLevel = SQOSFlags >> 16;
|
|
|
|
|
|
} else {
|
|
|
|
SecurityQualityOfService.ContextTrackingMode = SECURITY_DYNAMIC_TRACKING;
|
|
SecurityQualityOfService.ImpersonationLevel = SecurityImpersonation;
|
|
SecurityQualityOfService.EffectiveOnly = TRUE;
|
|
}
|
|
|
|
SecurityQualityOfService.Length = sizeof( SECURITY_QUALITY_OF_SERVICE );
|
|
Obja.SecurityQualityOfService = &SecurityQualityOfService;
|
|
|
|
if ( ARGUMENT_PRESENT(lpSecurityAttributes) ) {
|
|
Obja.SecurityDescriptor = lpSecurityAttributes->lpSecurityDescriptor;
|
|
if ( lpSecurityAttributes->bInheritHandle ) {
|
|
Obja.Attributes |= OBJ_INHERIT;
|
|
}
|
|
}
|
|
|
|
EaBuffer = NULL;
|
|
EaSize = 0;
|
|
|
|
if ( ARGUMENT_PRESENT(hTemplateFile) ) {
|
|
Status = NtQueryInformationFile(
|
|
hTemplateFile,
|
|
&IoStatusBlock,
|
|
&EaInfo,
|
|
sizeof(EaInfo),
|
|
FileEaInformation
|
|
);
|
|
if ( NT_SUCCESS(Status) && EaInfo.EaSize ) {
|
|
EaSize = EaInfo.EaSize;
|
|
do {
|
|
EaSize *= 2;
|
|
EaBuffer = RtlAllocateHeap( RtlProcessHeap(), MAKE_TAG( TMP_TAG ), EaSize);
|
|
if ( !EaBuffer ) {
|
|
RtlReleaseRelativeName(&RelativeName);
|
|
RtlFreeHeap(RtlProcessHeap(), 0, FreeBuffer);
|
|
BaseSetLastNTError(STATUS_NO_MEMORY);
|
|
return INVALID_HANDLE_VALUE;
|
|
}
|
|
Status = NtQueryEaFile(
|
|
hTemplateFile,
|
|
&IoStatusBlock,
|
|
EaBuffer,
|
|
EaSize,
|
|
FALSE,
|
|
(PVOID)NULL,
|
|
0,
|
|
(PULONG)NULL,
|
|
TRUE
|
|
);
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
RtlFreeHeap(RtlProcessHeap(), 0,EaBuffer);
|
|
EaBuffer = NULL;
|
|
IoStatusBlock.Information = 0;
|
|
}
|
|
} while ( Status == STATUS_BUFFER_OVERFLOW ||
|
|
Status == STATUS_BUFFER_TOO_SMALL );
|
|
EaSize = (ULONG)IoStatusBlock.Information;
|
|
}
|
|
}
|
|
|
|
CreateFlags |= (dwFlagsAndAttributes & FILE_FLAG_NO_BUFFERING ? FILE_NO_INTERMEDIATE_BUFFERING : 0 );
|
|
CreateFlags |= (dwFlagsAndAttributes & FILE_FLAG_WRITE_THROUGH ? FILE_WRITE_THROUGH : 0 );
|
|
CreateFlags |= (dwFlagsAndAttributes & FILE_FLAG_OVERLAPPED ? 0 : FILE_SYNCHRONOUS_IO_NONALERT );
|
|
CreateFlags |= (dwFlagsAndAttributes & FILE_FLAG_SEQUENTIAL_SCAN ? FILE_SEQUENTIAL_ONLY : 0 );
|
|
CreateFlags |= (dwFlagsAndAttributes & FILE_FLAG_RANDOM_ACCESS ? FILE_RANDOM_ACCESS : 0 );
|
|
CreateFlags |= (dwFlagsAndAttributes & FILE_FLAG_BACKUP_SEMANTICS ? FILE_OPEN_FOR_BACKUP_INTENT : 0 );
|
|
|
|
if ( dwFlagsAndAttributes & FILE_FLAG_DELETE_ON_CLOSE ) {
|
|
CreateFlags |= FILE_DELETE_ON_CLOSE;
|
|
dwDesiredAccess |= DELETE;
|
|
}
|
|
|
|
if ( dwFlagsAndAttributes & FILE_FLAG_OPEN_REPARSE_POINT ) {
|
|
CreateFlags |= FILE_OPEN_REPARSE_POINT;
|
|
}
|
|
|
|
if ( dwFlagsAndAttributes & FILE_FLAG_OPEN_NO_RECALL ) {
|
|
CreateFlags |= FILE_OPEN_NO_RECALL;
|
|
}
|
|
|
|
//
|
|
// Backup semantics allow directories to be opened
|
|
//
|
|
|
|
if ( !(dwFlagsAndAttributes & FILE_FLAG_BACKUP_SEMANTICS) ) {
|
|
CreateFlags |= FILE_NON_DIRECTORY_FILE;
|
|
}
|
|
else {
|
|
|
|
//
|
|
// Backup intent was specified... Now look to see if we are to allow
|
|
// directory creation
|
|
//
|
|
|
|
if ( (dwFlagsAndAttributes & FILE_ATTRIBUTE_DIRECTORY ) &&
|
|
(dwFlagsAndAttributes & FILE_FLAG_POSIX_SEMANTICS ) &&
|
|
(CreateDisposition == FILE_CREATE) ) {
|
|
CreateFlags |= FILE_DIRECTORY_FILE;
|
|
}
|
|
}
|
|
|
|
Status = NtCreateFile(
|
|
&Handle,
|
|
(ACCESS_MASK)dwDesiredAccess | SYNCHRONIZE | FILE_READ_ATTRIBUTES,
|
|
&Obja,
|
|
&IoStatusBlock,
|
|
NULL,
|
|
dwFlagsAndAttributes & (FILE_ATTRIBUTE_VALID_FLAGS & ~FILE_ATTRIBUTE_DIRECTORY),
|
|
dwShareMode,
|
|
CreateDisposition,
|
|
CreateFlags,
|
|
EaBuffer,
|
|
EaSize
|
|
);
|
|
|
|
RtlReleaseRelativeName(&RelativeName);
|
|
|
|
RtlFreeHeap(RtlProcessHeap(), 0,FreeBuffer);
|
|
|
|
RtlFreeHeap(RtlProcessHeap(), 0, EaBuffer);
|
|
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
BaseSetLastNTError(Status);
|
|
if ( Status == STATUS_OBJECT_NAME_COLLISION ) {
|
|
SetLastError(ERROR_FILE_EXISTS);
|
|
}
|
|
else if ( Status == STATUS_FILE_IS_A_DIRECTORY ) {
|
|
if ( EndsInSlash ) {
|
|
SetLastError(ERROR_PATH_NOT_FOUND);
|
|
}
|
|
else {
|
|
SetLastError(ERROR_ACCESS_DENIED);
|
|
}
|
|
}
|
|
return INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
//
|
|
// if NT returns supersede/overwritten, it means that a create_always, openalways
|
|
// found an existing copy of the file. In this case ERROR_ALREADY_EXISTS is returned
|
|
//
|
|
|
|
if ( (dwCreationDisposition == CREATE_ALWAYS && IoStatusBlock.Information == FILE_OVERWRITTEN) ||
|
|
(dwCreationDisposition == OPEN_ALWAYS && IoStatusBlock.Information == FILE_OPENED) ){
|
|
SetLastError(ERROR_ALREADY_EXISTS);
|
|
}
|
|
else {
|
|
SetLastError(0);
|
|
}
|
|
|
|
//
|
|
// Truncate the file if required
|
|
//
|
|
|
|
if ( dwCreationDisposition == TRUNCATE_EXISTING) {
|
|
|
|
AllocationInfo.AllocationSize.QuadPart = 0;
|
|
Status = NtSetInformationFile(
|
|
Handle,
|
|
&IoStatusBlock,
|
|
&AllocationInfo,
|
|
sizeof(AllocationInfo),
|
|
FileAllocationInformation
|
|
);
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
BaseSetLastNTError(Status);
|
|
NtClose(Handle);
|
|
Handle = INVALID_HANDLE_VALUE;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Deal with hTemplateFile
|
|
//
|
|
|
|
return Handle;
|
|
}
|
|
|
|
HFILE
|
|
WINAPI
|
|
OpenFile(
|
|
LPCSTR lpFileName,
|
|
LPOFSTRUCT lpReOpenBuff,
|
|
UINT uStyle
|
|
)
|
|
{
|
|
|
|
BOOL b;
|
|
FILETIME LastWriteTime;
|
|
HANDLE hFile;
|
|
DWORD DesiredAccess;
|
|
DWORD ShareMode;
|
|
DWORD CreateDisposition;
|
|
DWORD PathLength;
|
|
LPSTR FilePart;
|
|
IO_STATUS_BLOCK IoStatusBlock;
|
|
FILE_FS_DEVICE_INFORMATION DeviceInfo;
|
|
NTSTATUS Status;
|
|
OFSTRUCT OriginalReOpenBuff;
|
|
BOOL SearchFailed;
|
|
|
|
SearchFailed = FALSE;
|
|
OriginalReOpenBuff = *lpReOpenBuff;
|
|
hFile = (HANDLE)-1;
|
|
try {
|
|
SetLastError(0);
|
|
|
|
if ( uStyle & OF_PARSE ) {
|
|
PathLength = GetFullPathName(lpFileName,(OFS_MAXPATHNAME - 1),lpReOpenBuff->szPathName,&FilePart);
|
|
if ( PathLength > (OFS_MAXPATHNAME - 1) ) {
|
|
SetLastError(ERROR_INVALID_DATA);
|
|
hFile = (HANDLE)-1;
|
|
goto finally_exit;
|
|
}
|
|
lpReOpenBuff->cBytes = sizeof(*lpReOpenBuff);
|
|
lpReOpenBuff->fFixedDisk = 1;
|
|
lpReOpenBuff->nErrCode = 0;
|
|
lpReOpenBuff->Reserved1 = 0;
|
|
lpReOpenBuff->Reserved2 = 0;
|
|
hFile = (HANDLE)0;
|
|
goto finally_exit;
|
|
}
|
|
//
|
|
// Compute Desired Access
|
|
//
|
|
|
|
if ( uStyle & OF_WRITE ) {
|
|
DesiredAccess = GENERIC_WRITE;
|
|
}
|
|
else {
|
|
DesiredAccess = GENERIC_READ;
|
|
}
|
|
if ( uStyle & OF_READWRITE ) {
|
|
DesiredAccess |= (GENERIC_READ | GENERIC_WRITE);
|
|
}
|
|
|
|
//
|
|
// Compute ShareMode
|
|
//
|
|
|
|
ShareMode = BasepOfShareToWin32Share(uStyle);
|
|
|
|
//
|
|
// Compute Create Disposition
|
|
//
|
|
|
|
CreateDisposition = OPEN_EXISTING;
|
|
if ( uStyle & OF_CREATE ) {
|
|
CreateDisposition = CREATE_ALWAYS;
|
|
DesiredAccess = (GENERIC_READ | GENERIC_WRITE);
|
|
}
|
|
|
|
//
|
|
// if this is anything other than a re-open, fill the re-open buffer
|
|
// with the full pathname for the file
|
|
//
|
|
|
|
if ( !(uStyle & OF_REOPEN) ) {
|
|
PathLength = SearchPath(NULL,lpFileName,NULL,OFS_MAXPATHNAME-1,lpReOpenBuff->szPathName,&FilePart);
|
|
if ( PathLength > (OFS_MAXPATHNAME - 1) ) {
|
|
SetLastError(ERROR_INVALID_DATA);
|
|
hFile = (HANDLE)-1;
|
|
goto finally_exit;
|
|
}
|
|
if ( PathLength == 0 ) {
|
|
SearchFailed = TRUE;
|
|
PathLength = GetFullPathName(lpFileName,(OFS_MAXPATHNAME - 1),lpReOpenBuff->szPathName,&FilePart);
|
|
if ( !PathLength || PathLength > (OFS_MAXPATHNAME - 1) ) {
|
|
SetLastError(ERROR_INVALID_DATA);
|
|
hFile = (HANDLE)-1;
|
|
goto finally_exit;
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// Special case, Delete, Exist, and Parse
|
|
//
|
|
|
|
if ( uStyle & OF_EXIST ) {
|
|
if ( !(uStyle & OF_CREATE) ) {
|
|
DWORD FileAttributes;
|
|
|
|
if (SearchFailed) {
|
|
SetLastError(ERROR_FILE_NOT_FOUND);
|
|
hFile = (HANDLE)-1;
|
|
goto finally_exit;
|
|
}
|
|
|
|
FileAttributes = GetFileAttributesA(lpReOpenBuff->szPathName);
|
|
if ( FileAttributes == 0xffffffff ) {
|
|
SetLastError(ERROR_FILE_NOT_FOUND);
|
|
hFile = (HANDLE)-1;
|
|
goto finally_exit;
|
|
}
|
|
if ( FileAttributes & FILE_ATTRIBUTE_DIRECTORY ) {
|
|
SetLastError(ERROR_ACCESS_DENIED);
|
|
hFile = (HANDLE)-1;
|
|
goto finally_exit;
|
|
}
|
|
else {
|
|
hFile = (HANDLE)1;
|
|
lpReOpenBuff->cBytes = sizeof(*lpReOpenBuff);
|
|
goto finally_exit;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( uStyle & OF_DELETE ) {
|
|
if ( DeleteFile(lpReOpenBuff->szPathName) ) {
|
|
lpReOpenBuff->nErrCode = 0;
|
|
lpReOpenBuff->cBytes = sizeof(*lpReOpenBuff);
|
|
hFile = (HANDLE)1;
|
|
goto finally_exit;
|
|
}
|
|
else {
|
|
lpReOpenBuff->nErrCode = ERROR_FILE_NOT_FOUND;
|
|
hFile = (HANDLE)-1;
|
|
goto finally_exit;
|
|
}
|
|
}
|
|
|
|
|
|
//
|
|
// Open the file
|
|
//
|
|
|
|
retry_open:
|
|
hFile = CreateFile(
|
|
lpReOpenBuff->szPathName,
|
|
DesiredAccess,
|
|
ShareMode,
|
|
NULL,
|
|
CreateDisposition,
|
|
0,
|
|
NULL
|
|
);
|
|
|
|
if ( hFile == INVALID_HANDLE_VALUE ) {
|
|
|
|
if ( uStyle & OF_PROMPT
|
|
&& !(GetErrorMode() & SEM_NOOPENFILEERRORBOX)
|
|
&& !(RtlGetThreadErrorMode() & RTL_ERRORMODE_NOOPENFILEERRORBOX)) {
|
|
{
|
|
DWORD WinErrorStatus;
|
|
NTSTATUS st,HardErrorStatus;
|
|
ULONG_PTR ErrorParameter;
|
|
ULONG ErrorResponse;
|
|
ANSI_STRING AnsiString;
|
|
UNICODE_STRING UnicodeString;
|
|
|
|
WinErrorStatus = GetLastError();
|
|
if ( WinErrorStatus == ERROR_FILE_NOT_FOUND ) {
|
|
HardErrorStatus = STATUS_NO_SUCH_FILE;
|
|
}
|
|
else if ( WinErrorStatus == ERROR_PATH_NOT_FOUND ) {
|
|
HardErrorStatus = STATUS_OBJECT_PATH_NOT_FOUND;
|
|
}
|
|
else {
|
|
goto finally_exit;
|
|
}
|
|
|
|
//
|
|
// Hard error time
|
|
//
|
|
|
|
RtlInitAnsiString(&AnsiString,lpReOpenBuff->szPathName);
|
|
st = RtlAnsiStringToUnicodeString(&UnicodeString, &AnsiString, TRUE);
|
|
if ( !NT_SUCCESS(st) ) {
|
|
goto finally_exit;
|
|
}
|
|
ErrorParameter = (ULONG_PTR)&UnicodeString;
|
|
|
|
HardErrorStatus = NtRaiseHardError(
|
|
HardErrorStatus | HARDERROR_OVERRIDE_ERRORMODE,
|
|
1,
|
|
1,
|
|
&ErrorParameter,
|
|
OptionRetryCancel,
|
|
&ErrorResponse
|
|
);
|
|
RtlFreeUnicodeString(&UnicodeString);
|
|
if ( NT_SUCCESS(HardErrorStatus) && ErrorResponse == ResponseRetry ) {
|
|
goto retry_open;
|
|
}
|
|
}
|
|
}
|
|
goto finally_exit;
|
|
}
|
|
|
|
if ( uStyle & OF_EXIST ) {
|
|
CloseHandle(hFile);
|
|
hFile = (HANDLE)1;
|
|
lpReOpenBuff->cBytes = sizeof(*lpReOpenBuff);
|
|
goto finally_exit;
|
|
}
|
|
|
|
//
|
|
// Determine if this is a hard disk.
|
|
//
|
|
|
|
Status = NtQueryVolumeInformationFile(
|
|
hFile,
|
|
&IoStatusBlock,
|
|
&DeviceInfo,
|
|
sizeof(DeviceInfo),
|
|
FileFsDeviceInformation
|
|
);
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
CloseHandle(hFile);
|
|
BaseSetLastNTError(Status);
|
|
hFile = (HANDLE)-1;
|
|
goto finally_exit;
|
|
}
|
|
switch ( DeviceInfo.DeviceType ) {
|
|
|
|
case FILE_DEVICE_DISK:
|
|
case FILE_DEVICE_DISK_FILE_SYSTEM:
|
|
if ( DeviceInfo.Characteristics & FILE_REMOVABLE_MEDIA ) {
|
|
lpReOpenBuff->fFixedDisk = 0;
|
|
}
|
|
else {
|
|
lpReOpenBuff->fFixedDisk = 1;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
lpReOpenBuff->fFixedDisk = 0;
|
|
break;
|
|
}
|
|
|
|
//
|
|
// Capture the last write time and save in the open struct.
|
|
//
|
|
|
|
b = GetFileTime(hFile,NULL,NULL,&LastWriteTime);
|
|
|
|
if ( !b ) {
|
|
lpReOpenBuff->Reserved1 = 0;
|
|
lpReOpenBuff->Reserved2 = 0;
|
|
}
|
|
else {
|
|
b = FileTimeToDosDateTime(
|
|
&LastWriteTime,
|
|
&lpReOpenBuff->Reserved1,
|
|
&lpReOpenBuff->Reserved2
|
|
);
|
|
if ( !b ) {
|
|
lpReOpenBuff->Reserved1 = 0;
|
|
lpReOpenBuff->Reserved2 = 0;
|
|
}
|
|
}
|
|
|
|
lpReOpenBuff->cBytes = sizeof(*lpReOpenBuff);
|
|
|
|
//
|
|
// The re-open buffer is completely filled in. Now
|
|
// see if we are quitting (parsing), verifying, or
|
|
// just returning with the file opened.
|
|
//
|
|
|
|
if ( uStyle & OF_VERIFY ) {
|
|
if ( OriginalReOpenBuff.Reserved1 == lpReOpenBuff->Reserved1 &&
|
|
OriginalReOpenBuff.Reserved2 == lpReOpenBuff->Reserved2 &&
|
|
!strcmp(OriginalReOpenBuff.szPathName,lpReOpenBuff->szPathName) ) {
|
|
goto finally_exit;
|
|
}
|
|
else {
|
|
*lpReOpenBuff = OriginalReOpenBuff;
|
|
CloseHandle(hFile);
|
|
hFile = (HANDLE)-1;
|
|
goto finally_exit;
|
|
}
|
|
}
|
|
finally_exit:;
|
|
}
|
|
finally {
|
|
lpReOpenBuff->nErrCode = (WORD)GetLastError();
|
|
}
|
|
return (HFILE)HandleToUlong(hFile);
|
|
}
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This is an internal routine that modifies the DACL so that
|
|
BasepCopySecurityInfo will copy over the CreatorOwner inherited ACE.
|
|
This is accomplished by finding the CreatorOwner ACE and marking
|
|
it as "not inherited".
|
|
|
|
ReplaceFile does not have enough privileges in a typical app to transfer
|
|
the owner from the previous file to the new copy. Consequently, the owner
|
|
can change after calling ReplaceFile, which can result in the previous
|
|
owner losing access to the new file, since inherited ACEs are not copied to
|
|
the new file, but are re-inherited from the parent directory.
|
|
If the previous owner had access to the file by the inherited ACE
|
|
CreatorOwner:F -> PreviousOwner:F, changing owners will result in
|
|
CreatorOwner:F -> NewOwner:F, and the previous owner's ACE is dropped.
|
|
By stripping the inherit flag off the previous owner's ACE, it will
|
|
be copied to the new file, and the previous owner will still have access.
|
|
|
|
Arguments:
|
|
|
|
Dacl - DACL to be modified
|
|
|
|
PreviousOwner - The current owner of the resource
|
|
|
|
NewOwner - The new to-be owner of the resource
|
|
|
|
Return Value:
|
|
|
|
NTSTATUS -- returns STATUS_SUCCESS if previous owner is the same as the new owner, or the previous owner's ACE was marked as "not inherited".
|
|
|
|
|
|
--*/
|
|
|
|
NTSTATUS BasepCopyCreatorOwnerACE (PACL Dacl,
|
|
PSID PreviousOwner,
|
|
PSID NewOwner)
|
|
{
|
|
NTSTATUS nts = STATUS_SUCCESS;
|
|
ACL_SIZE_INFORMATION aclSize;
|
|
PACCESS_ALLOWED_ACE pACE = NULL;
|
|
WORD wCount;
|
|
|
|
if (NULL == PreviousOwner || NULL == Dacl) {
|
|
nts = STATUS_INVALID_PARAMETER;
|
|
goto Err;
|
|
}
|
|
|
|
// If the new owner and the previous owner are the same
|
|
// There's no need to change the ACL, so return STATUS_SUCCESS
|
|
if (NewOwner != NULL && RtlEqualSid (NewOwner, PreviousOwner)) {
|
|
nts = STATUS_SUCCESS;
|
|
goto Err;
|
|
}
|
|
|
|
if (!NT_SUCCESS(nts = RtlQueryInformationAcl (Dacl, &aclSize,
|
|
sizeof(aclSize),
|
|
AclSizeInformation))) {
|
|
goto Err;
|
|
}
|
|
|
|
for (wCount = 0; wCount < aclSize.AceCount; wCount++) {
|
|
|
|
if (!NT_SUCCESS(nts = RtlGetAce (Dacl, wCount, (PVOID*) &pACE))) {
|
|
goto Err;
|
|
}
|
|
|
|
if (pACE->Header.AceType != ACCESS_ALLOWED_ACE_TYPE)
|
|
continue;
|
|
|
|
// Find the previous owner's ACE
|
|
// The previous owner must have full access to the file
|
|
if (RtlEqualSid (PreviousOwner, (PSID) &pACE->SidStart) &&
|
|
pACE->Mask == FILE_ALL_ACCESS) {
|
|
|
|
if (pACE->Header.AceFlags & INHERITED_ACE) // disable the flag
|
|
pACE->Header.AceFlags &= ~INHERITED_ACE;
|
|
|
|
break; // else if flag is not set, previous owner has full access
|
|
}
|
|
}
|
|
|
|
Err:
|
|
|
|
return nts;
|
|
}
|
|
|
|
|
|
typedef DWORD (WINAPI *GETSECURITYINFOPTR)(
|
|
IN LPCWSTR pObjectName,
|
|
IN SE_OBJECT_TYPE ObjectType,
|
|
IN SECURITY_INFORMATION SecurityInfo,
|
|
OUT PSID * ppsidOwner,
|
|
OUT PSID * ppsidGroup,
|
|
OUT PACL * ppDacl,
|
|
OUT PACL * ppSacl,
|
|
OUT PSECURITY_DESCRIPTOR * ppSecurityDescriptor
|
|
);
|
|
|
|
typedef DWORD (WINAPI *SETSECURITYINFOPTR)(
|
|
IN LPCWSTR pObjectName,
|
|
IN SE_OBJECT_TYPE ObjectType,
|
|
IN SECURITY_INFORMATION SecurityInfo,
|
|
IN PSID psidOwner,
|
|
IN PSID psidGroup,
|
|
IN PACL pDacl,
|
|
IN PACL pSacl
|
|
);
|
|
|
|
typedef BOOL (WINAPI *GETSECURITYDESCRIPTORCONTROLPTR)(
|
|
IN PSECURITY_DESCRIPTOR pSecurityDescriptor,
|
|
OUT PSECURITY_DESCRIPTOR_CONTROL pControl,
|
|
OUT LPDWORD lpdwRevision
|
|
);
|
|
|
|
BOOL
|
|
BasepCopySecurityInformation( LPCWSTR lpExistingFileName,
|
|
HANDLE SourceFile,
|
|
ACCESS_MASK SourceFileAccess,
|
|
LPCWSTR lpNewFileName,
|
|
HANDLE DestFile,
|
|
ACCESS_MASK DestFileAccess,
|
|
SECURITY_INFORMATION SecurityInformation,
|
|
LPCOPYFILE_CONTEXT Context,
|
|
DWORD DestFileFsAttributes,
|
|
PBOOL DeleteDest,
|
|
BOOL CopyCreatorOwnerAce )
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This is an internal routine that copies one or more of the DACL,
|
|
SACL, owner, and group from the source to the dest file.
|
|
|
|
Arguments:
|
|
|
|
lpExistingFileName - Provides the name of the source file.
|
|
|
|
SourceFile - Provides a handle to that source file.
|
|
|
|
SourceFileAccess - The access flags that were used to open SourceFile.
|
|
|
|
lpNewFileName - Provides the name of the destination file.
|
|
|
|
DestFile - Provides a handle to that destination file.
|
|
|
|
DestFileAccess - The access flags that were used to open DestFile.
|
|
|
|
SecurityInformation - Specifies what security should be copied (bit
|
|
flag of the *_SECURITY_INFORMATION defines).
|
|
|
|
Context - All the information necessary to call the CopyFile callback routine.
|
|
|
|
DestFileFsAttributes - Provides the FILE_FS_ATTRIBUTE_INFORMATION.FileSystemAttributes
|
|
for the dest file's volume.
|
|
|
|
DeleteDest - Contains a pointer to a value that will be set to TRUE if this the dest
|
|
file should be deleted. This is the case if there is an error or the user
|
|
cancels the operation. If the user stops the operation, this routine still
|
|
returns an error, but the dest file is not deleted.
|
|
|
|
CopyCreatorOwnerAce - if TRUE, the ACE inherited from CREATOR_OWNER will be copied to the destination. Normally, inherited ACEs are not copied but are re-inherited when the ACL is applied to the destination.
|
|
|
|
Return Value:
|
|
|
|
TRUE - The operation was successful.
|
|
|
|
FALSE- The operation failed. Extended error status is available
|
|
using GetLastError.
|
|
|
|
--*/
|
|
|
|
{
|
|
BOOLEAN Succeeded = FALSE;
|
|
|
|
PACL Dacl = NULL;
|
|
PACL Sacl = NULL;
|
|
PSID Owner = NULL;
|
|
PSID Group = NULL;
|
|
PSID NewOwner = NULL;
|
|
PSECURITY_DESCRIPTOR SecurityDescriptor = NULL;
|
|
PSECURITY_DESCRIPTOR NewSecurityDescriptor = NULL;
|
|
DWORD dwError = 0;
|
|
|
|
HANDLE Advapi32 = NULL;
|
|
GETSECURITYINFOPTR GetSecurityInfoPtr = NULL;
|
|
SETSECURITYINFOPTR SetSecurityInfoPtr = NULL;
|
|
GETSECURITYDESCRIPTORCONTROLPTR GetSecurityDescriptorControlPtr = NULL;
|
|
|
|
SECURITY_DESCRIPTOR_CONTROL Control = 0;
|
|
DWORD dwRevision = 0;
|
|
SECURITY_INFORMATION SecInfoCreatorOwner = 0;
|
|
|
|
// If the source file isn't identified, there's nothing we can do.
|
|
|
|
if( lpExistingFileName == NULL || lpNewFileName == NULL ) {
|
|
Succeeded = TRUE;
|
|
goto Exit;
|
|
}
|
|
|
|
// If the destination doesn't support ACLs, assume it doesn't
|
|
// support any such security information (i.e. owner/group).
|
|
|
|
if( !(FILE_PERSISTENT_ACLS & DestFileFsAttributes ) ) {
|
|
|
|
if( BasepCopyFileCallback( TRUE, // Continue (ignore the problem) by default
|
|
ERROR_NOT_SUPPORTED,
|
|
Context,
|
|
NULL,
|
|
PRIVCALLBACK_SECURITY_INFORMATION_NOT_SUPPORTED,
|
|
SourceFile,
|
|
DestFile,
|
|
DeleteDest )) {
|
|
// The caller wants to coninue on despite this.
|
|
Succeeded = TRUE;
|
|
}
|
|
|
|
goto Exit;
|
|
}
|
|
|
|
// Check that DACL is copy-able if necessary
|
|
|
|
if( SecurityInformation & DACL_SECURITY_INFORMATION ) {
|
|
|
|
// We're supposed to copy the DACL. Do we have enough access?
|
|
if( !( SourceFileAccess & GENERIC_READ ) ||
|
|
!( DestFileAccess & WRITE_DAC ) ) {
|
|
|
|
SecurityInformation &= ~DACL_SECURITY_INFORMATION;
|
|
|
|
if( !BasepCopyFileCallback( TRUE, // Continue (ignore the problem) by default
|
|
ERROR_ACCESS_DENIED,
|
|
Context,
|
|
NULL,
|
|
PRIVCALLBACK_DACL_ACCESS_DENIED,
|
|
SourceFile,
|
|
DestFile,
|
|
DeleteDest )) {
|
|
goto Exit;
|
|
}
|
|
|
|
|
|
}
|
|
}
|
|
|
|
// Check that owner & group is copy-able if necessary
|
|
|
|
if( (SecurityInformation & OWNER_SECURITY_INFORMATION) ||
|
|
(SecurityInformation & GROUP_SECURITY_INFORMATION) ) {
|
|
|
|
// We're supposed to copy owner & group. Do we have enough access?
|
|
|
|
if( !( SourceFileAccess & GENERIC_READ ) ||
|
|
!( DestFileAccess & WRITE_OWNER ) ) {
|
|
|
|
SecurityInformation &= ~(OWNER_SECURITY_INFORMATION|GROUP_SECURITY_INFORMATION);
|
|
|
|
if( !BasepCopyFileCallback( TRUE, // Continue (ignore the problem) by default
|
|
ERROR_ACCESS_DENIED,
|
|
Context,
|
|
NULL,
|
|
PRIVCALLBACK_OWNER_GROUP_ACCESS_DENIED,
|
|
SourceFile,
|
|
DestFile,
|
|
DeleteDest )) {
|
|
goto Exit;
|
|
}
|
|
|
|
|
|
}
|
|
}
|
|
|
|
// Check that SACL is copy-able if necessary
|
|
|
|
if( SecurityInformation & SACL_SECURITY_INFORMATION ) {
|
|
|
|
// We're supposed to copy the SACL. Do we have enough rights?
|
|
|
|
if( !(SourceFileAccess & ACCESS_SYSTEM_SECURITY) ||
|
|
!(DestFileAccess & ACCESS_SYSTEM_SECURITY) ) {
|
|
|
|
SecurityInformation &= ~SACL_SECURITY_INFORMATION;
|
|
|
|
if( !BasepCopyFileCallback( TRUE, // Continue (ignore the problem) by default
|
|
ERROR_PRIVILEGE_NOT_HELD,
|
|
Context,
|
|
NULL,
|
|
PRIVCALLBACK_SACL_ACCESS_DENIED,
|
|
SourceFile,
|
|
DestFile,
|
|
DeleteDest )) {
|
|
goto Exit;
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
// If nothing was copyable (and all was ignorable), then we're done.
|
|
|
|
if( SecurityInformation == 0 ) {
|
|
Succeeded = TRUE;
|
|
goto Exit;
|
|
}
|
|
|
|
if (CopyCreatorOwnerAce) // need the previous owner
|
|
SecInfoCreatorOwner |= OWNER_SECURITY_INFORMATION;
|
|
|
|
// Get the advapi32 APIs.
|
|
|
|
Advapi32 = LoadLibraryW(AdvapiDllString);
|
|
if( NULL == Advapi32 ) {
|
|
*DeleteDest = TRUE;
|
|
goto Exit;
|
|
}
|
|
|
|
|
|
GetSecurityInfoPtr = (GETSECURITYINFOPTR) GetProcAddress( Advapi32,
|
|
"GetSecurityInfo" );
|
|
SetSecurityInfoPtr = (SETSECURITYINFOPTR) GetProcAddress( Advapi32,
|
|
"SetSecurityInfo" );
|
|
|
|
GetSecurityDescriptorControlPtr = (GETSECURITYDESCRIPTORCONTROLPTR) GetProcAddress( Advapi32,
|
|
"GetSecurityDescriptorControl" );
|
|
|
|
if( GetSecurityInfoPtr == NULL ||
|
|
GetSecurityDescriptorControlPtr == NULL ||
|
|
SetSecurityInfoPtr == NULL ) {
|
|
|
|
SetLastError( ERROR_INVALID_DLL );
|
|
*DeleteDest = TRUE;
|
|
goto Exit;
|
|
}
|
|
|
|
// Read in the security information from the source files
|
|
|
|
dwError = GetSecurityInfoPtr( SourceFile,
|
|
SE_FILE_OBJECT,
|
|
SecurityInformation|SecInfoCreatorOwner,
|
|
&Owner,
|
|
&Group,
|
|
&Dacl,
|
|
&Sacl,
|
|
&SecurityDescriptor );
|
|
|
|
if( dwError != ERROR_SUCCESS ) {
|
|
SetLastError( dwError );
|
|
*DeleteDest = TRUE;
|
|
goto Exit;
|
|
}
|
|
|
|
|
|
// We may have requested a DACL or SACL from a file that didn't have one. If so,
|
|
// don't try to set it (because it will cause a parameter error).
|
|
|
|
if( Dacl == NULL ) {
|
|
SecurityInformation &= ~DACL_SECURITY_INFORMATION;
|
|
}
|
|
if( Sacl == NULL ) {
|
|
SecurityInformation &= ~SACL_SECURITY_INFORMATION;
|
|
}
|
|
|
|
if (SecurityInformation & (DACL_SECURITY_INFORMATION |
|
|
SACL_SECURITY_INFORMATION)) {
|
|
|
|
if ( !GetSecurityDescriptorControlPtr( SecurityDescriptor, &Control, &dwRevision )) {
|
|
// GetSecurityDescriptorControl calls BaseSetLastNTError on error
|
|
*DeleteDest = TRUE;
|
|
goto Exit;
|
|
}
|
|
}
|
|
|
|
if (SecurityInformation & DACL_SECURITY_INFORMATION) {
|
|
if (Control & SE_DACL_PROTECTED) {
|
|
SecurityInformation |= PROTECTED_DACL_SECURITY_INFORMATION;
|
|
} else {
|
|
SecurityInformation |= UNPROTECTED_DACL_SECURITY_INFORMATION;
|
|
}
|
|
if (CopyCreatorOwnerAce) {
|
|
if (ERROR_SUCCESS != GetSecurityInfoPtr( DestFile,
|
|
SE_FILE_OBJECT,
|
|
OWNER_SECURITY_INFORMATION,
|
|
&NewOwner,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
&NewSecurityDescriptor ))
|
|
NewOwner = NULL;
|
|
|
|
BasepCopyCreatorOwnerACE (Dacl, Owner, NewOwner);
|
|
// continue even if CreatorOwner ACE cannot be transferred
|
|
}
|
|
}
|
|
if (SecurityInformation & SACL_SECURITY_INFORMATION) {
|
|
if (Control & SE_SACL_PROTECTED) {
|
|
SecurityInformation |= PROTECTED_SACL_SECURITY_INFORMATION;
|
|
} else {
|
|
SecurityInformation |= UNPROTECTED_SACL_SECURITY_INFORMATION;
|
|
}
|
|
}
|
|
|
|
// Set the security on the dest file. This loops because it may
|
|
// have to back off on what it requests.
|
|
|
|
while( TRUE && SecurityInformation != 0 ) {
|
|
|
|
|
|
dwError = SetSecurityInfoPtr( DestFile,
|
|
SE_FILE_OBJECT,
|
|
SecurityInformation,
|
|
Owner,
|
|
Group,
|
|
Dacl,
|
|
Sacl );
|
|
|
|
// Even if we have WRITE_OWNER access, the SID we're setting might not
|
|
// be valid. If so, see if we can retry without them.
|
|
|
|
if( dwError == ERROR_SUCCESS ) {
|
|
break;
|
|
} else {
|
|
|
|
if( SecurityInformation & (OWNER_SECURITY_INFORMATION|GROUP_SECURITY_INFORMATION) ) {
|
|
|
|
if( !BasepCopyFileCallback( TRUE, // Continue by default
|
|
dwError,
|
|
Context,
|
|
NULL,
|
|
PRIVCALLBACK_OWNER_GROUP_FAILED,
|
|
SourceFile,
|
|
DestFile,
|
|
DeleteDest )) {
|
|
goto Exit;
|
|
}
|
|
|
|
// It's OK to ignore the owner/group. Try again with them turned off.
|
|
SecurityInformation &= ~(OWNER_SECURITY_INFORMATION|GROUP_SECURITY_INFORMATION);
|
|
|
|
} else {
|
|
|
|
// Samba 2.x says that it supports ACLs, but returns not-supported.
|
|
if( !BasepCopyFileCallback( TRUE, // Continue by default
|
|
dwError,
|
|
Context,
|
|
NULL,
|
|
PRIVCALLBACK_SECURITY_INFORMATION_NOT_SUPPORTED,
|
|
SourceFile,
|
|
DestFile,
|
|
DeleteDest )) {
|
|
goto Exit;
|
|
}
|
|
|
|
SecurityInformation = 0;
|
|
}
|
|
|
|
}
|
|
} // while( TRUE && SecurityInformation != 0 )
|
|
|
|
Succeeded = TRUE;
|
|
|
|
Exit:
|
|
|
|
if( SecurityDescriptor != NULL ) {
|
|
LocalFree( SecurityDescriptor );
|
|
}
|
|
|
|
if( NewSecurityDescriptor != NULL ) {
|
|
LocalFree( NewSecurityDescriptor );
|
|
}
|
|
|
|
if( Advapi32 != NULL ) {
|
|
FreeLibrary( Advapi32 );
|
|
}
|
|
|
|
return( Succeeded );
|
|
}
|
|
|
|
|
|
|
|
BOOL
|
|
BasepCopyFileCallback( BOOL ContinueByDefault,
|
|
DWORD Win32ErrorOnStopOrCancel,
|
|
LPCOPYFILE_CONTEXT Context,
|
|
PLARGE_INTEGER StreamBytesCopied OPTIONAL,
|
|
DWORD CallbackReason,
|
|
HANDLE SourceFile,
|
|
HANDLE DestFile,
|
|
OPTIONAL PBOOL Canceled )
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
During CopyFile, call the CopyFileProgressCallback routine.
|
|
|
|
Arguments:
|
|
|
|
ContinueByDefault - Value to use as the return code of this
|
|
function if there is no callback function or the callback
|
|
returns PROGRESS_REASON_NOT_HANDLED.
|
|
|
|
Win32ErrorOnStopOrCancel - If the callback returns PROGRESS_STOP
|
|
or PROGRESS_CANCEL set this as the last error.
|
|
|
|
Context - Structure with the information necessary to call
|
|
the callback.
|
|
|
|
StreamBytesCopied - If provided, passed to the callback. If not
|
|
provided, zero is passed.
|
|
|
|
CallbackReason - Passed to the callback as the dwReasonCode.
|
|
|
|
SourceFile - The source of the CopyFile.
|
|
|
|
DestFile - The destination of the CopyFile.
|
|
|
|
Canceled - Pointer to a bool that on return indicates that the copy operation
|
|
has been canceled by the user.
|
|
|
|
Return Value:
|
|
|
|
TRUE - The CopyFile should continue.
|
|
|
|
FALSE - The CopyFile should be aborted. The last error will be set
|
|
before this routine returns.
|
|
|
|
--*/
|
|
|
|
{ // BasepCopyFileCallback
|
|
|
|
PLARGE_INTEGER StreamBytes;
|
|
LARGE_INTEGER Zero;
|
|
DWORD ReturnCode;
|
|
BOOL Continue = ContinueByDefault;
|
|
|
|
// If there's no callback context or it's been quieted, then
|
|
// there's nothing to do.
|
|
|
|
if( Context == NULL || Context->lpProgressRoutine == NULL )
|
|
return( Continue );
|
|
|
|
// If the caller didn't provide a StreamBytesCopied, use zero.
|
|
|
|
if( StreamBytesCopied == NULL ) {
|
|
StreamBytes = &Zero;
|
|
StreamBytes->QuadPart = 0;
|
|
} else {
|
|
StreamBytes = StreamBytesCopied;
|
|
}
|
|
|
|
// Call the callback
|
|
|
|
ReturnCode = Context->lpProgressRoutine(
|
|
Context->TotalFileSize,
|
|
Context->TotalBytesTransferred,
|
|
Context->TotalFileSize,
|
|
*StreamBytes,
|
|
Context->dwStreamNumber,
|
|
CallbackReason,
|
|
SourceFile,
|
|
DestFile,
|
|
Context->lpData
|
|
);
|
|
|
|
if( Canceled ) {
|
|
*Canceled = FALSE;
|
|
}
|
|
|
|
switch( ReturnCode )
|
|
{
|
|
case PROGRESS_QUIET:
|
|
Context->lpProgressRoutine = NULL;
|
|
Continue = TRUE;
|
|
break;
|
|
|
|
case PROGRESS_CANCEL:
|
|
if( Canceled ) {
|
|
*Canceled = TRUE;
|
|
}
|
|
// Fall through
|
|
|
|
case PROGRESS_STOP:
|
|
SetLastError( Win32ErrorOnStopOrCancel );
|
|
Continue = FALSE;
|
|
break;
|
|
|
|
case PROGRESS_CONTINUE:
|
|
Continue = TRUE;
|
|
break;
|
|
|
|
case PRIVPROGRESS_REASON_NOT_HANDLED:
|
|
default:
|
|
|
|
if( !Continue ) {
|
|
SetLastError( Win32ErrorOnStopOrCancel );
|
|
}
|
|
break;
|
|
}
|
|
|
|
return( Continue );
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
BOOL
|
|
WINAPI
|
|
ReplaceFileA(
|
|
LPCSTR lpReplacedFileName,
|
|
LPCSTR lpReplacementFileName,
|
|
LPCSTR lpBackupFileName OPTIONAL,
|
|
DWORD dwReplaceFlags,
|
|
LPVOID lpExclude,
|
|
LPVOID lpReserved
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
ANSI thunk to ReplaceFileW
|
|
|
|
--*/
|
|
|
|
{
|
|
UNICODE_STRING DynamicUnicodeReplaced;
|
|
UNICODE_STRING DynamicUnicodeReplacement;
|
|
UNICODE_STRING DynamicUnicodeBackup;
|
|
BOOL b = FALSE;
|
|
|
|
//
|
|
// Parameter validation.
|
|
//
|
|
|
|
if(NULL == lpReplacedFileName || NULL == lpReplacementFileName ||
|
|
NULL != lpExclude || NULL != lpReserved ||
|
|
dwReplaceFlags & ~(REPLACEFILE_WRITE_THROUGH | REPLACEFILE_IGNORE_MERGE_ERRORS)) {
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
return FALSE;
|
|
}
|
|
|
|
if (!Basep8BitStringToDynamicUnicodeString( &DynamicUnicodeReplaced, lpReplacedFileName )) {
|
|
return FALSE;
|
|
}
|
|
|
|
if (!Basep8BitStringToDynamicUnicodeString( &DynamicUnicodeReplacement, lpReplacementFileName )) {
|
|
goto end1;
|
|
}
|
|
|
|
if (lpBackupFileName) {
|
|
if (!Basep8BitStringToDynamicUnicodeString( &DynamicUnicodeBackup, lpBackupFileName )) {
|
|
goto end2;
|
|
}
|
|
} else {
|
|
DynamicUnicodeBackup.Buffer = NULL;
|
|
}
|
|
|
|
b = ReplaceFileW(DynamicUnicodeReplaced.Buffer,
|
|
DynamicUnicodeReplacement.Buffer,
|
|
DynamicUnicodeBackup.Buffer,
|
|
dwReplaceFlags,
|
|
lpExclude,
|
|
lpReserved);
|
|
|
|
if(lpBackupFileName) {
|
|
RtlFreeUnicodeString(&DynamicUnicodeBackup);
|
|
}
|
|
|
|
end2:
|
|
RtlFreeUnicodeString(&DynamicUnicodeReplacement);
|
|
end1:
|
|
RtlFreeUnicodeString(&DynamicUnicodeReplaced);
|
|
|
|
return b;
|
|
}
|
|
|
|
BOOL
|
|
WINAPI
|
|
ReplaceFileW(
|
|
LPCWSTR lpReplacedFileName,
|
|
LPCWSTR lpReplacementFileName,
|
|
LPCWSTR lpBackupFileName OPTIONAL,
|
|
DWORD dwReplaceFlags,
|
|
LPVOID lpExclude,
|
|
LPVOID lpReserved
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Replace a file with a new file. The original file's attributes, alternate
|
|
data streams, oid, acl, compression/encryption are transfered to the new
|
|
file. If a backup file name is supplied, the original file is left at the
|
|
backup file specified. Object ID, Create time/date, and file shortnames are
|
|
tunneled by the system.
|
|
|
|
Arguments:
|
|
|
|
lpReplacementFileName - name of the new file.
|
|
|
|
lpReplacedFileName - name of the file to be replaced.
|
|
|
|
lpBackupFileName - optional. If not NULL, the original file can be found
|
|
under this name.
|
|
|
|
dwReplaceFlags - specifies how the file is to be replaced. Currently, the
|
|
possible values are:
|
|
REPLACEFILE_WRITE_THROUGH Setting this flag guarantees that any
|
|
tunneled information is flushed to disk
|
|
before the function returns.
|
|
REPLACEFILE_IGNORE_MERGE_ERRORS Setting this flag lets the routine
|
|
continue on with the operation even
|
|
when merge error occurs. If this flag
|
|
is set, GetLastError will not return
|
|
ERROR_UNABLE_TO_MERGE_DATA.
|
|
|
|
lpExclude - Reserved for future use. Must be set to NULL.
|
|
|
|
lpReserved - for future use. Must be set to NULL.
|
|
|
|
Return Value:
|
|
|
|
TRUE - The operation was successful.
|
|
FALSE - The operation failed. Extended error status is available
|
|
using GetLastError.
|
|
|
|
Error Code:
|
|
|
|
ERROR_UNABLE_TO_REMOVE_REPLACED The replacement file has inherited the
|
|
replaced file's attributes and streams.
|
|
the replaced file is unchanged. Both
|
|
files still exist under their original
|
|
names. No backup file exists.
|
|
|
|
ERROR_UNABLE_TO_MOVE_REPLACEMENT Same as above. Except that backup file
|
|
exists if requested.
|
|
|
|
ERROR_UNABLE_TO_MOVE_REPLACEMENT_2 The replacement file has inherited the
|
|
replaced file's attributes and streams.
|
|
It's still under its original name.
|
|
Replaced file exists under the name of
|
|
the backup file.
|
|
|
|
All other error codes Both replacement file and replaced file
|
|
exist under their original names. The
|
|
replacement file may have inherited
|
|
none of, or part of, or all of the
|
|
replaced file's attributes and streams.
|
|
No backup file exists.
|
|
|
|
--*/
|
|
|
|
{
|
|
HANDLE advapi32LibHandle = INVALID_HANDLE_VALUE;
|
|
ENCRYPTFILEWPTR EncryptFileWPtr = NULL;
|
|
DECRYPTFILEWPTR DecryptFileWPtr = NULL;
|
|
HANDLE ReplacedFile = INVALID_HANDLE_VALUE;
|
|
HANDLE ReplacementFile = INVALID_HANDLE_VALUE;
|
|
HANDLE StreamHandle = INVALID_HANDLE_VALUE;
|
|
HANDLE OutputStreamHandle = INVALID_HANDLE_VALUE;
|
|
UNICODE_STRING ReplacedFileNTName;
|
|
UNICODE_STRING ReplacementFileNTName;
|
|
UNICODE_STRING StreamNTName;
|
|
UNICODE_STRING BackupNTFileName;
|
|
OBJECT_ATTRIBUTES ReplacedObjAttr;
|
|
OBJECT_ATTRIBUTES ReplacementObjAttr;
|
|
OBJECT_ATTRIBUTES StreamObjAttr;
|
|
IO_STATUS_BLOCK IoStatusBlock;
|
|
NTSTATUS status;
|
|
BOOL fSuccess = FALSE;
|
|
BOOL fDoCopy;
|
|
PVOID ReplacedFreeBuffer = NULL;
|
|
PVOID ReplacementFreeBuffer = NULL;
|
|
FILE_BASIC_INFORMATION ReplacedBasicInfo;
|
|
FILE_BASIC_INFORMATION ReplacementBasicInfo;
|
|
DWORD ReplacementFileAccess;
|
|
DWORD ReplacedFileAccess;
|
|
FILE_COMPRESSION_INFORMATION ReplacedCompressionInfo;
|
|
PSECURITY_DESCRIPTOR ReplacedSecDescPtr = NULL;
|
|
DWORD dwSizeNeeded;
|
|
ULONG cInfo;
|
|
PFILE_STREAM_INFORMATION ReplacedStreamInfo = NULL;
|
|
PFILE_STREAM_INFORMATION ReplacementStreamInfo = NULL;
|
|
PFILE_STREAM_INFORMATION ScannerStreamInfoReplaced = NULL;
|
|
PFILE_STREAM_INFORMATION ScannerStreamInfoReplacement = NULL;
|
|
DWORD dwCopyFlags = COPY_FILE_FAIL_IF_EXISTS;
|
|
DWORD dwCopySize = 0;
|
|
PFILE_RENAME_INFORMATION BackupReplaceRenameInfo = NULL;
|
|
PFILE_RENAME_INFORMATION ReplaceRenameInfo = NULL;
|
|
LPCOPYFILE_CONTEXT context = NULL;
|
|
BOOL fQueryReplacedFileFail = FALSE;
|
|
BOOL fQueryReplacementFileFail = FALSE;
|
|
BOOL fReplacedFileIsEncrypted = FALSE;
|
|
BOOL fReplacedFileIsCompressed = FALSE;
|
|
BOOL fReplacementFileIsEncrypted = FALSE;
|
|
BOOL fReplacementFileIsCompressed = FALSE;
|
|
WCHAR * pwszTempBackupFile = NULL;
|
|
DWORD DestFileFsAttributes = 0;
|
|
WCHAR SavedLastChar;
|
|
|
|
struct {
|
|
FILE_FS_ATTRIBUTE_INFORMATION Info;
|
|
WCHAR Buffer[MAX_PATH];
|
|
} ReplacementFsAttrInfoBuffer;
|
|
|
|
//
|
|
// Initialization
|
|
//
|
|
|
|
RtlInitUnicodeString(&BackupNTFileName, NULL);
|
|
|
|
//
|
|
// Parameter validation.
|
|
//
|
|
|
|
if(NULL == lpReplacedFileName || NULL == lpReplacementFileName ||
|
|
NULL != lpExclude || NULL != lpReserved ||
|
|
dwReplaceFlags & ~(REPLACEFILE_WRITE_THROUGH | REPLACEFILE_IGNORE_MERGE_ERRORS)) {
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
goto Exit;
|
|
}
|
|
|
|
try {
|
|
|
|
//
|
|
// Open the to-be-replaced file
|
|
//
|
|
|
|
RtlInitUnicodeString(&ReplacedFileNTName, NULL);
|
|
if(!RtlDosPathNameToNtPathName_U(lpReplacedFileName,
|
|
&ReplacedFileNTName,
|
|
NULL,
|
|
NULL)) {
|
|
SetLastError(ERROR_PATH_NOT_FOUND);
|
|
leave;
|
|
}
|
|
ReplacedFreeBuffer = ReplacedFileNTName.Buffer;
|
|
InitializeObjectAttributes(&ReplacedObjAttr,
|
|
&ReplacedFileNTName,
|
|
OBJ_CASE_INSENSITIVE,
|
|
NULL,
|
|
NULL);
|
|
|
|
ReplacedFileAccess = GENERIC_READ | DELETE | SYNCHRONIZE | ACCESS_SYSTEM_SECURITY;
|
|
|
|
status = NtOpenFile(&ReplacedFile,
|
|
ReplacedFileAccess,
|
|
&ReplacedObjAttr,
|
|
&IoStatusBlock,
|
|
FILE_SHARE_READ |
|
|
FILE_SHARE_WRITE |
|
|
FILE_SHARE_DELETE,
|
|
FILE_NON_DIRECTORY_FILE |
|
|
FILE_SYNCHRONOUS_IO_NONALERT);
|
|
|
|
if (!NT_SUCCESS(status)) {
|
|
ReplacedFileAccess &= ~ACCESS_SYSTEM_SECURITY;
|
|
|
|
status = NtOpenFile(&ReplacedFile,
|
|
ReplacedFileAccess,
|
|
&ReplacedObjAttr,
|
|
&IoStatusBlock,
|
|
FILE_SHARE_READ |
|
|
FILE_SHARE_WRITE |
|
|
FILE_SHARE_DELETE,
|
|
FILE_NON_DIRECTORY_FILE |
|
|
FILE_SYNCHRONOUS_IO_NONALERT);
|
|
}
|
|
|
|
if(!NT_SUCCESS(status))
|
|
{
|
|
BaseSetLastNTError(status);
|
|
leave;
|
|
}
|
|
|
|
//
|
|
// Open the replacement file
|
|
//
|
|
|
|
if(!RtlDosPathNameToNtPathName_U(lpReplacementFileName,
|
|
&ReplacementFileNTName,
|
|
NULL,
|
|
NULL)) {
|
|
SetLastError(ERROR_PATH_NOT_FOUND);
|
|
leave;
|
|
}
|
|
ReplacementFreeBuffer = ReplacementFileNTName.Buffer;
|
|
InitializeObjectAttributes(&ReplacementObjAttr,
|
|
&ReplacementFileNTName,
|
|
OBJ_CASE_INSENSITIVE,
|
|
NULL,
|
|
NULL);
|
|
|
|
if ((ReplacedFileAccess & ACCESS_SYSTEM_SECURITY)) {
|
|
ReplacementFileAccess = SYNCHRONIZE | GENERIC_READ | GENERIC_WRITE | DELETE | WRITE_DAC | ACCESS_SYSTEM_SECURITY;
|
|
|
|
status = NtOpenFile(&ReplacementFile,
|
|
ReplacementFileAccess,
|
|
&ReplacementObjAttr,
|
|
&IoStatusBlock,
|
|
0,
|
|
FILE_NON_DIRECTORY_FILE |
|
|
FILE_SYNCHRONOUS_IO_NONALERT);
|
|
}
|
|
else status = STATUS_ACCESS_DENIED; // force the open
|
|
|
|
if (!NT_SUCCESS(status)) {
|
|
ReplacementFileAccess = SYNCHRONIZE | GENERIC_READ | GENERIC_WRITE | DELETE | WRITE_DAC;
|
|
status = NtOpenFile(&ReplacementFile,
|
|
ReplacementFileAccess,
|
|
&ReplacementObjAttr,
|
|
&IoStatusBlock,
|
|
0,
|
|
FILE_NON_DIRECTORY_FILE |
|
|
FILE_SYNCHRONOUS_IO_NONALERT);
|
|
}
|
|
|
|
if (STATUS_ACCESS_DENIED == status &&
|
|
|
|
|
|
dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS) {
|
|
ReplacementFileAccess = SYNCHRONIZE | GENERIC_READ | DELETE | WRITE_DAC;
|
|
status = NtOpenFile(&ReplacementFile,
|
|
ReplacementFileAccess,
|
|
&ReplacementObjAttr,
|
|
&IoStatusBlock,
|
|
0,
|
|
FILE_NON_DIRECTORY_FILE |
|
|
FILE_SYNCHRONOUS_IO_NONALERT);
|
|
}
|
|
|
|
if(STATUS_ACCESS_DENIED == status &&
|
|
dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS)
|
|
{ // try again without WRITE_DAC access
|
|
ReplacementFileAccess = SYNCHRONIZE | GENERIC_READ | DELETE;
|
|
status = NtOpenFile(&ReplacementFile,
|
|
ReplacementFileAccess,
|
|
&ReplacementObjAttr,
|
|
&IoStatusBlock,
|
|
0,
|
|
FILE_NON_DIRECTORY_FILE |
|
|
FILE_SYNCHRONOUS_IO_NONALERT);
|
|
}
|
|
|
|
if(!NT_SUCCESS(status))
|
|
{
|
|
BaseSetLastNTError(status);
|
|
leave;
|
|
}
|
|
|
|
//
|
|
// Get the attributes of the to-be-replaced file and set them on the
|
|
// replacement file. FILE_ATTRIBUTE_COMPRESSED and
|
|
// FILE_ATTRIBUTE_ENCRYPTED can be obtained by NtQueryInformationFile,
|
|
// but can't be set by NtSetInformationFile. Compression and
|
|
// encryption will be handled later.
|
|
//
|
|
|
|
status = NtQueryInformationFile(ReplacedFile,
|
|
&IoStatusBlock,
|
|
&ReplacedBasicInfo,
|
|
sizeof(ReplacedBasicInfo),
|
|
FileBasicInformation);
|
|
if(!NT_SUCCESS(status)) {
|
|
if(!(dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS)) {
|
|
BaseSetLastNTError(status);
|
|
leave;
|
|
}
|
|
fQueryReplacedFileFail = TRUE;
|
|
}
|
|
else {
|
|
// don't replace read-only files. See bug 38426
|
|
if ((ReplacedBasicInfo.FileAttributes & FILE_ATTRIBUTE_READONLY)) {
|
|
status = STATUS_ACCESS_DENIED;
|
|
BaseSetLastNTError(status); // ERROR_ACCESS_DENIED
|
|
leave;
|
|
}
|
|
|
|
status = NtQueryInformationFile(ReplacementFile,
|
|
&IoStatusBlock,
|
|
&ReplacementBasicInfo,
|
|
sizeof(ReplacementBasicInfo),
|
|
FileBasicInformation);
|
|
if(!NT_SUCCESS(status)) {
|
|
if(!(dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS)) {
|
|
BaseSetLastNTError(status);
|
|
leave;
|
|
}
|
|
fQueryReplacementFileFail = TRUE;
|
|
}
|
|
|
|
//
|
|
// Creation time is the only time we want to preserve. So zero out
|
|
// all the other times.
|
|
//
|
|
ReplacedBasicInfo.LastAccessTime.QuadPart = 0;
|
|
ReplacedBasicInfo.LastWriteTime.QuadPart = 0;
|
|
ReplacedBasicInfo.ChangeTime.QuadPart = 0;
|
|
status = NtSetInformationFile(ReplacementFile,
|
|
&IoStatusBlock,
|
|
&ReplacedBasicInfo,
|
|
sizeof(ReplacedBasicInfo),
|
|
FileBasicInformation);
|
|
if(!NT_SUCCESS(status) &&
|
|
!(dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS)) {
|
|
BaseSetLastNTError(status);
|
|
leave;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Transfer ACLs from the to-be-replaced file to the replacement file.
|
|
//
|
|
|
|
status = NtQueryVolumeInformationFile(ReplacementFile,
|
|
&IoStatusBlock,
|
|
&ReplacementFsAttrInfoBuffer.Info,
|
|
sizeof(ReplacementFsAttrInfoBuffer),
|
|
FileFsAttributeInformation);
|
|
if(!NT_SUCCESS(status)) {
|
|
if(!(dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS)) {
|
|
BaseSetLastNTError(status);
|
|
leave;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
BOOL Delete = FALSE;
|
|
if( !BasepCopySecurityInformation( lpReplacedFileName,
|
|
ReplacedFile,
|
|
ReplacedFileAccess,
|
|
lpReplacementFileName,
|
|
ReplacementFile,
|
|
ReplacementFileAccess,
|
|
DACL_SECURITY_INFORMATION |
|
|
SACL_SECURITY_INFORMATION,
|
|
NULL,
|
|
ReplacementFsAttrInfoBuffer.Info.FileSystemAttributes,
|
|
&Delete,
|
|
TRUE )) {
|
|
leave;
|
|
|
|
}
|
|
}
|
|
|
|
|
|
//
|
|
// If the to-be-replaced file has alternate data streams, and they do
|
|
// not exist in the replacement file, copy them into the replacement
|
|
// file.
|
|
//
|
|
|
|
cInfo = 4096;
|
|
do {
|
|
ReplacedStreamInfo = RtlAllocateHeap(RtlProcessHeap(),
|
|
MAKE_TAG(TMP_TAG),
|
|
cInfo);
|
|
if (!ReplacedStreamInfo) {
|
|
break;
|
|
}
|
|
status = NtQueryInformationFile(ReplacedFile,
|
|
&IoStatusBlock,
|
|
ReplacedStreamInfo,
|
|
cInfo,
|
|
FileStreamInformation);
|
|
if (!NT_SUCCESS(status)) {
|
|
RtlFreeHeap(RtlProcessHeap(), 0, ReplacedStreamInfo);
|
|
ReplacedStreamInfo = NULL;
|
|
cInfo *= 2;
|
|
}
|
|
} while(status == STATUS_BUFFER_OVERFLOW || status == STATUS_BUFFER_TOO_SMALL);
|
|
if(NULL == ReplacedStreamInfo) {
|
|
if(status != STATUS_INVALID_PARAMETER &&
|
|
status != STATUS_NOT_IMPLEMENTED) {
|
|
if(!(dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS)) {
|
|
BaseSetLastNTError(status);
|
|
leave;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
if(!NT_SUCCESS(status)) {
|
|
if(!(dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS)) {
|
|
BaseSetLastNTError(status);
|
|
leave;
|
|
}
|
|
}
|
|
else {
|
|
// The outer loop enumerates streams in the to-be-replaced file.
|
|
ScannerStreamInfoReplaced = ReplacedStreamInfo;
|
|
while(TRUE) {
|
|
// Skip the default stream.
|
|
if(ScannerStreamInfoReplaced->StreamNameLength <= sizeof(WCHAR) ||
|
|
ScannerStreamInfoReplaced->StreamName[1] == ':') {
|
|
if(0 == ScannerStreamInfoReplaced->NextEntryOffset) {
|
|
break;
|
|
}
|
|
ScannerStreamInfoReplaced = (PFILE_STREAM_INFORMATION)((PCHAR)ScannerStreamInfoReplaced + ScannerStreamInfoReplaced->NextEntryOffset);
|
|
continue;
|
|
}
|
|
|
|
// Query replacement file stream information if we haven't done so.
|
|
// We wait until now to do this query because we don't want to do
|
|
// it unless it's absolutely necessary.
|
|
if(NULL == ReplacementStreamInfo) {
|
|
cInfo = 4096;
|
|
do {
|
|
ReplacementStreamInfo = RtlAllocateHeap(RtlProcessHeap(),
|
|
MAKE_TAG(TMP_TAG),
|
|
cInfo);
|
|
if (!ReplacementStreamInfo) {
|
|
break;
|
|
}
|
|
status = NtQueryInformationFile(ReplacementFile,
|
|
&IoStatusBlock,
|
|
ReplacementStreamInfo,
|
|
cInfo - sizeof( WCHAR ),
|
|
FileStreamInformation);
|
|
if (!NT_SUCCESS(status)) {
|
|
RtlFreeHeap(RtlProcessHeap(), 0, ReplacementStreamInfo);
|
|
ReplacementStreamInfo = NULL;
|
|
cInfo *= 2;
|
|
}
|
|
} while(status == STATUS_BUFFER_OVERFLOW || status == STATUS_BUFFER_TOO_SMALL);
|
|
if(NULL == ReplacementStreamInfo ||
|
|
!NT_SUCCESS(status)) {
|
|
if(!(dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS)) {
|
|
BaseSetLastNTError(status);
|
|
leave;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// The inner loop enumerates the replacement file streams.
|
|
ScannerStreamInfoReplacement = ReplacementStreamInfo;
|
|
fDoCopy = TRUE;
|
|
while(TRUE) {
|
|
if(ScannerStreamInfoReplaced->StreamNameLength == ScannerStreamInfoReplacement->StreamNameLength &&
|
|
_wcsnicmp(ScannerStreamInfoReplaced->StreamName, ScannerStreamInfoReplacement->StreamName, ScannerStreamInfoReplacement->StreamNameLength / sizeof(WCHAR)) == 0) {
|
|
// The stream already exists in the replacement file.
|
|
fDoCopy = FALSE;
|
|
break;
|
|
}
|
|
if(0 == ScannerStreamInfoReplacement->NextEntryOffset) {
|
|
// end of the stream information
|
|
break;
|
|
}
|
|
ScannerStreamInfoReplacement = (PFILE_STREAM_INFORMATION)((PCHAR)ScannerStreamInfoReplacement + ScannerStreamInfoReplacement->NextEntryOffset);
|
|
}
|
|
|
|
// We copy the stream if it doesn't exist in the replacement file.
|
|
if(TRUE == fDoCopy) {
|
|
StreamNTName.Buffer = &ScannerStreamInfoReplaced->StreamName[0];
|
|
StreamNTName.Length = (USHORT)ScannerStreamInfoReplaced->StreamNameLength;
|
|
StreamNTName.MaximumLength = StreamNTName.Length;
|
|
|
|
// Open the stream in the to-be-replaced file.
|
|
InitializeObjectAttributes(&StreamObjAttr,
|
|
&StreamNTName,
|
|
0,
|
|
ReplacedFile,
|
|
NULL);
|
|
status = NtOpenFile(&StreamHandle,
|
|
SYNCHRONIZE |
|
|
GENERIC_READ,
|
|
&StreamObjAttr,
|
|
&IoStatusBlock,
|
|
FILE_SHARE_READ |
|
|
FILE_SHARE_WRITE |
|
|
FILE_SHARE_DELETE,
|
|
FILE_SYNCHRONOUS_IO_NONALERT |
|
|
FILE_SEQUENTIAL_ONLY);
|
|
if(!NT_SUCCESS(status)) {
|
|
if(!(dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS)) {
|
|
BaseSetLastNTError(status);
|
|
leave;
|
|
}
|
|
|
|
if(0 == ScannerStreamInfoReplaced->NextEntryOffset) {
|
|
break;
|
|
}
|
|
|
|
ScannerStreamInfoReplaced = (PFILE_STREAM_INFORMATION)((PCHAR)ScannerStreamInfoReplaced + ScannerStreamInfoReplaced->NextEntryOffset);
|
|
continue;
|
|
}
|
|
|
|
// Copy the stream;
|
|
SavedLastChar = StreamNTName.Buffer[StreamNTName.Length / sizeof( WCHAR )];
|
|
StreamNTName.Buffer[StreamNTName.Length / sizeof( WCHAR )] = L'\0';
|
|
OutputStreamHandle = INVALID_HANDLE_VALUE;
|
|
if(!BaseCopyStream(NULL,
|
|
StreamHandle,
|
|
SYNCHRONIZE | GENERIC_READ,
|
|
StreamNTName.Buffer,
|
|
ReplacementFile,
|
|
&ScannerStreamInfoReplaced->StreamSize,
|
|
&dwCopyFlags,
|
|
&OutputStreamHandle,
|
|
&dwCopySize,
|
|
&context,
|
|
NULL,
|
|
FALSE,
|
|
0,
|
|
&DestFileFsAttributes )) {
|
|
|
|
StreamNTName.Buffer[StreamNTName.Length / sizeof( WCHAR )] = SavedLastChar;
|
|
|
|
if(!(dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS)) {
|
|
leave;
|
|
}
|
|
}
|
|
|
|
StreamNTName.Buffer[StreamNTName.Length / sizeof( WCHAR )] = SavedLastChar;
|
|
|
|
NtClose(StreamHandle);
|
|
StreamHandle = INVALID_HANDLE_VALUE;
|
|
if (INVALID_HANDLE_VALUE != OutputStreamHandle) {
|
|
NtClose(OutputStreamHandle);
|
|
OutputStreamHandle = INVALID_HANDLE_VALUE;
|
|
}
|
|
} // copy stream
|
|
|
|
if(0 == ScannerStreamInfoReplaced->NextEntryOffset) {
|
|
break;
|
|
}
|
|
|
|
ScannerStreamInfoReplaced = (PFILE_STREAM_INFORMATION)((PCHAR)ScannerStreamInfoReplaced + ScannerStreamInfoReplaced->NextEntryOffset);
|
|
} // outer loop
|
|
}
|
|
}
|
|
|
|
//
|
|
// Compression/Encryption.
|
|
//
|
|
|
|
// If we successfully read the to-be-replaced file's attributes, we
|
|
// do the necessary compression/encryption. Otherwise we do nothing.
|
|
// If we don't know the replacement files attributes
|
|
// (fQueryReplacementFileFail is TRUE), to be on the safe side, we will
|
|
// try to (un)compress/(un)encrypt it if the to-be-replaced file is
|
|
// (un)compressed/(un)encrypted.
|
|
if(!fQueryReplacedFileFail) {
|
|
|
|
fReplacedFileIsEncrypted = ReplacedBasicInfo.FileAttributes & FILE_ATTRIBUTE_ENCRYPTED;
|
|
fReplacedFileIsCompressed = ReplacedBasicInfo.FileAttributes & FILE_ATTRIBUTE_COMPRESSED;
|
|
if(!fQueryReplacementFileFail) {
|
|
fReplacementFileIsEncrypted = ReplacementBasicInfo.FileAttributes & FILE_ATTRIBUTE_ENCRYPTED;
|
|
fReplacementFileIsCompressed = ReplacementBasicInfo.FileAttributes & FILE_ATTRIBUTE_COMPRESSED;
|
|
}
|
|
else {
|
|
// If we don't know the file attributes of the replacement
|
|
// file, we'll assume the replacement file has opposite
|
|
// encryption/compression attributes as the replaced file
|
|
// so that encryption/compression operations will be forced
|
|
// on the replacement file.
|
|
fReplacementFileIsEncrypted = !fReplacedFileIsEncrypted;
|
|
fReplacementFileIsCompressed = !fReplacedFileIsCompressed;
|
|
}
|
|
|
|
//
|
|
// Encryption.
|
|
//
|
|
|
|
// If the to-be-replaced file is encrypted and either the
|
|
// replacement file is encrypted or we don't know it's encryption
|
|
// status, we try to encrypt the replacement file.
|
|
if(fReplacedFileIsEncrypted && !fReplacementFileIsEncrypted) {
|
|
NtClose(ReplacementFile);
|
|
ReplacementFile = INVALID_HANDLE_VALUE;
|
|
// There's no way to encrypt a file based on its handle. We
|
|
// must use the Win32 API (which calls over to the EFS service).
|
|
advapi32LibHandle = LoadLibraryW(AdvapiDllString);
|
|
if(NULL == advapi32LibHandle) {
|
|
if(!(dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS)) {
|
|
leave;
|
|
}
|
|
}
|
|
else {
|
|
EncryptFileWPtr = (ENCRYPTFILEWPTR)GetProcAddress(advapi32LibHandle, "EncryptFileW");
|
|
if(NULL == EncryptFileWPtr) {
|
|
if(!(dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS)) {
|
|
leave;
|
|
}
|
|
}
|
|
else {
|
|
if((EncryptFileWPtr)(lpReplacementFileName)) {
|
|
// Encryption operation automatically decompresses
|
|
// compressed files. We need this flag for the
|
|
// case when the replaced file is encrypted and
|
|
// the replacement file is compressed. At this
|
|
// point, the replacement file is encrypted.
|
|
// Because a file is automatically decompressed
|
|
// when it's encrypted, we don't want to
|
|
// decompress it again, otherwise we'll get an
|
|
// error.
|
|
fReplacementFileIsCompressed = FALSE;
|
|
} else if(!(dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS)) {
|
|
leave;
|
|
}
|
|
}
|
|
}
|
|
status = NtOpenFile(&ReplacementFile,
|
|
SYNCHRONIZE |
|
|
GENERIC_READ |
|
|
GENERIC_WRITE |
|
|
WRITE_DAC |
|
|
DELETE,
|
|
&ReplacementObjAttr,
|
|
&IoStatusBlock,
|
|
0,
|
|
FILE_NON_DIRECTORY_FILE |
|
|
FILE_SYNCHRONOUS_IO_NONALERT);
|
|
|
|
if (STATUS_ACCESS_DENIED == status &&
|
|
|
|
dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS) {
|
|
status = NtOpenFile(&ReplacementFile,
|
|
SYNCHRONIZE |
|
|
GENERIC_READ |
|
|
DELETE |
|
|
WRITE_DAC,
|
|
&ReplacementObjAttr,
|
|
&IoStatusBlock,
|
|
0,
|
|
FILE_NON_DIRECTORY_FILE |
|
|
FILE_SYNCHRONOUS_IO_NONALERT);
|
|
}
|
|
if(STATUS_ACCESS_DENIED == status &&
|
|
dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS) {
|
|
status = NtOpenFile(&ReplacementFile,
|
|
SYNCHRONIZE |
|
|
GENERIC_READ |
|
|
DELETE,
|
|
&ReplacementObjAttr,
|
|
&IoStatusBlock,
|
|
0,
|
|
FILE_NON_DIRECTORY_FILE |
|
|
FILE_SYNCHRONOUS_IO_NONALERT);
|
|
}
|
|
|
|
// We leave without attempt to rename the files because we know
|
|
// we can't rename the replacement file without it being opened
|
|
// first.
|
|
if(!NT_SUCCESS(status)) {
|
|
BaseSetLastNTError(status);
|
|
leave;
|
|
}
|
|
}
|
|
else if(!fReplacedFileIsEncrypted && fReplacementFileIsEncrypted) {
|
|
// If the to-be-replaced file is not encrypted and the
|
|
// replacement file is encrypted, decrypt the replacement file.
|
|
NtClose(ReplacementFile);
|
|
ReplacementFile = INVALID_HANDLE_VALUE;
|
|
advapi32LibHandle = LoadLibraryW(AdvapiDllString);
|
|
if(NULL == advapi32LibHandle) {
|
|
if(!(dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS)) {
|
|
leave;
|
|
}
|
|
}
|
|
else {
|
|
DecryptFileWPtr = (DECRYPTFILEWPTR)GetProcAddress(advapi32LibHandle, "DecryptFileW");
|
|
if(NULL == DecryptFileWPtr) {
|
|
if(!(dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS)) {
|
|
leave;
|
|
}
|
|
}
|
|
else {
|
|
if((DecryptFileWPtr)(lpReplacementFileName, 0)) {
|
|
fReplacementFileIsEncrypted = FALSE;
|
|
} else if(!(dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS)) {
|
|
leave;
|
|
}
|
|
}
|
|
}
|
|
status = NtOpenFile(&ReplacementFile,
|
|
SYNCHRONIZE |
|
|
GENERIC_READ |
|
|
GENERIC_WRITE |
|
|
WRITE_DAC |
|
|
DELETE,
|
|
&ReplacementObjAttr,
|
|
&IoStatusBlock,
|
|
0,
|
|
FILE_NON_DIRECTORY_FILE |
|
|
FILE_SYNCHRONOUS_IO_NONALERT);
|
|
|
|
if(STATUS_ACCESS_DENIED == status &&
|
|
dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS) {
|
|
status = NtOpenFile(&ReplacementFile,
|
|
SYNCHRONIZE |
|
|
GENERIC_READ |
|
|
DELETE |
|
|
WRITE_DAC,
|
|
&ReplacementObjAttr,
|
|
&IoStatusBlock,
|
|
0,
|
|
FILE_NON_DIRECTORY_FILE |
|
|
FILE_SYNCHRONOUS_IO_NONALERT);
|
|
}
|
|
|
|
if(STATUS_ACCESS_DENIED == status &&
|
|
dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS) {
|
|
status = NtOpenFile(&ReplacementFile,
|
|
SYNCHRONIZE |
|
|
GENERIC_READ |
|
|
DELETE,
|
|
&ReplacementObjAttr,
|
|
&IoStatusBlock,
|
|
0,
|
|
FILE_NON_DIRECTORY_FILE |
|
|
FILE_SYNCHRONOUS_IO_NONALERT);
|
|
}
|
|
|
|
// We leave without attempt to rename the files because we know
|
|
// we can't rename the replacement file without it being opened
|
|
// first.
|
|
if(!NT_SUCCESS(status)) {
|
|
BaseSetLastNTError(status);
|
|
leave;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Compression.
|
|
//
|
|
|
|
// If the to-be-replaced file is compressed, and the replacement
|
|
// file is not, we compress the replacement file. In the case that
|
|
// we don't know if the replacement file is compressed or not
|
|
// (fQueryReplacementFileFail is TRUE), we will
|
|
// try to compress it anyway and ignore the error if it's already
|
|
// compressed.
|
|
if(fReplacedFileIsCompressed && !fReplacementFileIsCompressed) {
|
|
// Get the compression method mode.
|
|
status = NtQueryInformationFile(ReplacedFile,
|
|
&IoStatusBlock,
|
|
&ReplacedCompressionInfo,
|
|
sizeof(FILE_COMPRESSION_INFORMATION),
|
|
FileCompressionInformation);
|
|
if(!NT_SUCCESS(status)) {
|
|
// We couldn't get the compression method code. if the
|
|
// ignore merge error flag is on, we continue on to
|
|
// encryption. Otherwise, we set last error and leave.
|
|
if(!fQueryReplacementFileFail &&
|
|
!(dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS)) {
|
|
BaseSetLastNTError(status);
|
|
leave;
|
|
}
|
|
}
|
|
else {
|
|
// Do the compression. If we fail and ignore failure flag
|
|
// is not on, set error and leave. Otherwise continue on
|
|
// to encryption.
|
|
status = NtFsControlFile(ReplacementFile,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
&IoStatusBlock,
|
|
FSCTL_SET_COMPRESSION,
|
|
&ReplacedCompressionInfo.CompressionFormat,
|
|
sizeof(ReplacedCompressionInfo.CompressionFormat),
|
|
NULL,
|
|
0);
|
|
if(!fQueryReplacementFileFail && !NT_SUCCESS(status) &&
|
|
!(dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS)) {
|
|
BaseSetLastNTError(status);
|
|
leave;
|
|
}
|
|
}
|
|
}
|
|
else if(!fReplacedFileIsCompressed && fReplacementFileIsCompressed && !fReplacementFileIsEncrypted) {
|
|
// The replaced file is not compressed, the replacement file
|
|
// is compressed (or that the query information for replacement
|
|
// file failed and we don't know if it's compressed or not),
|
|
// decompress the replacement file.
|
|
USHORT CompressionFormat = 0;
|
|
status = NtFsControlFile(ReplacementFile,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
&IoStatusBlock,
|
|
FSCTL_SET_COMPRESSION,
|
|
&CompressionFormat,
|
|
sizeof(CompressionFormat),
|
|
NULL,
|
|
0);
|
|
if(!fQueryReplacementFileFail && !NT_SUCCESS(status) &&
|
|
!(dwReplaceFlags & REPLACEFILE_IGNORE_MERGE_ERRORS)) {
|
|
BaseSetLastNTError(status);
|
|
leave;
|
|
}
|
|
}
|
|
} // if querying replaced file attribute failed.
|
|
|
|
//
|
|
// Do the renames.
|
|
//
|
|
|
|
if (NULL == lpBackupFileName) {
|
|
HANDLE hFile = INVALID_HANDLE_VALUE;
|
|
DWORD dwCounter = 0;
|
|
DWORD dwReplacedFileLength = lstrlenW(lpReplacedFileName) *
|
|
sizeof(WCHAR);
|
|
WCHAR wcsSuffix [16];
|
|
|
|
pwszTempBackupFile = RtlAllocateHeap(RtlProcessHeap(),
|
|
MAKE_TAG(TMP_TAG),
|
|
dwReplacedFileLength + sizeof(wcsSuffix));
|
|
|
|
if(NULL == pwszTempBackupFile) {
|
|
SetLastError(ERROR_UNABLE_TO_REMOVE_REPLACED);
|
|
leave;
|
|
}
|
|
|
|
while (hFile == INVALID_HANDLE_VALUE && dwCounter < 16) {
|
|
swprintf (wcsSuffix, L"~RF%4x.TMP", dwCounter + GetTickCount());
|
|
lstrcpyW (pwszTempBackupFile, lpReplacedFileName);
|
|
lstrcatW (pwszTempBackupFile, wcsSuffix);
|
|
|
|
hFile = CreateFileW ( pwszTempBackupFile,
|
|
GENERIC_WRITE | DELETE, // file access
|
|
0, // share mode
|
|
NULL, // SD
|
|
CREATE_NEW, // how to create
|
|
FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_TEMPORARY,
|
|
NULL); // handle to template file
|
|
|
|
dwCounter++;
|
|
}
|
|
|
|
if (hFile != INVALID_HANDLE_VALUE) {
|
|
CloseHandle (hFile); // immediately close temp file
|
|
} else {
|
|
SetLastError(ERROR_UNABLE_TO_REMOVE_REPLACED);
|
|
leave;
|
|
}
|
|
|
|
}
|
|
else {
|
|
pwszTempBackupFile = (WCHAR *) lpBackupFileName;
|
|
}
|
|
|
|
// If backup file requested, rename the to-be-replaced file to backup.
|
|
// Otherwise delete it.
|
|
|
|
if(!RtlDosPathNameToNtPathName_U(pwszTempBackupFile,
|
|
&BackupNTFileName,
|
|
NULL,
|
|
NULL)) {
|
|
SetLastError(ERROR_PATH_NOT_FOUND);
|
|
leave;
|
|
}
|
|
|
|
BackupReplaceRenameInfo = RtlAllocateHeap(RtlProcessHeap(),
|
|
MAKE_TAG(TMP_TAG),
|
|
BackupNTFileName.Length +
|
|
sizeof(*BackupReplaceRenameInfo));
|
|
if(NULL == BackupReplaceRenameInfo)
|
|
{
|
|
SetLastError(ERROR_UNABLE_TO_REMOVE_REPLACED);
|
|
leave;
|
|
}
|
|
BackupReplaceRenameInfo->ReplaceIfExists = TRUE;
|
|
BackupReplaceRenameInfo->RootDirectory = NULL;
|
|
BackupReplaceRenameInfo->FileNameLength = BackupNTFileName.Length;
|
|
RtlCopyMemory(BackupReplaceRenameInfo->FileName, BackupNTFileName.Buffer, BackupNTFileName.Length);
|
|
status = NtSetInformationFile(ReplacedFile,
|
|
&IoStatusBlock,
|
|
BackupReplaceRenameInfo,
|
|
BackupNTFileName.Length +
|
|
sizeof(*BackupReplaceRenameInfo),
|
|
FileRenameInformation);
|
|
if(!NT_SUCCESS(status)) {
|
|
SetLastError(ERROR_UNABLE_TO_REMOVE_REPLACED);
|
|
leave;
|
|
}
|
|
|
|
// Rename the replacement file to the replaced file.
|
|
ReplaceRenameInfo = RtlAllocateHeap(RtlProcessHeap(),
|
|
MAKE_TAG(TMP_TAG),
|
|
ReplacedFileNTName.Length +
|
|
sizeof(*ReplaceRenameInfo));
|
|
if(NULL == ReplaceRenameInfo)
|
|
{
|
|
SetLastError(ERROR_UNABLE_TO_MOVE_REPLACEMENT);
|
|
leave;
|
|
}
|
|
ReplaceRenameInfo->ReplaceIfExists = TRUE;
|
|
ReplaceRenameInfo->RootDirectory = NULL;
|
|
ReplaceRenameInfo->FileNameLength = ReplacedFileNTName.Length;
|
|
RtlCopyMemory(ReplaceRenameInfo->FileName, ReplacedFileNTName.Buffer, ReplacedFileNTName.Length);
|
|
status = NtSetInformationFile(ReplacementFile,
|
|
&IoStatusBlock,
|
|
ReplaceRenameInfo,
|
|
ReplacedFileNTName.Length +
|
|
sizeof(*ReplaceRenameInfo),
|
|
FileRenameInformation);
|
|
if(!NT_SUCCESS(status)) {
|
|
// If we failed to rename the replacement file, and a backup file
|
|
// for the original file exists, we try to restore the original
|
|
// file from the backup file.
|
|
if(lpBackupFileName) {
|
|
status = NtSetInformationFile(ReplacedFile,
|
|
&IoStatusBlock,
|
|
ReplaceRenameInfo,
|
|
ReplacedFileNTName.Length +
|
|
sizeof(*ReplaceRenameInfo),
|
|
FileRenameInformation);
|
|
if(!NT_SUCCESS(status)) {
|
|
SetLastError(ERROR_UNABLE_TO_MOVE_REPLACEMENT_2);
|
|
}
|
|
else {
|
|
SetLastError(ERROR_UNABLE_TO_MOVE_REPLACEMENT);
|
|
}
|
|
leave;
|
|
}
|
|
else {
|
|
SetLastError(ERROR_UNABLE_TO_MOVE_REPLACEMENT);
|
|
leave;
|
|
}
|
|
}
|
|
|
|
//
|
|
// All is well. We set the return code to TRUE. And flush the files if
|
|
// necessary.
|
|
//
|
|
|
|
if(dwReplaceFlags & REPLACEFILE_WRITE_THROUGH) {
|
|
NtFlushBuffersFile(ReplacedFile, &IoStatusBlock);
|
|
}
|
|
|
|
fSuccess = TRUE;
|
|
|
|
} finally {
|
|
|
|
if(INVALID_HANDLE_VALUE != advapi32LibHandle && NULL != advapi32LibHandle) {
|
|
FreeLibrary(advapi32LibHandle);
|
|
}
|
|
|
|
if(INVALID_HANDLE_VALUE != ReplacedFile) {
|
|
NtClose(ReplacedFile);
|
|
}
|
|
if(INVALID_HANDLE_VALUE != ReplacementFile) {
|
|
NtClose(ReplacementFile);
|
|
}
|
|
if(INVALID_HANDLE_VALUE != StreamHandle) {
|
|
NtClose(StreamHandle);
|
|
}
|
|
if(INVALID_HANDLE_VALUE != OutputStreamHandle) {
|
|
NtClose(OutputStreamHandle);
|
|
}
|
|
|
|
RtlFreeHeap(RtlProcessHeap(), 0, ReplacedFreeBuffer);
|
|
RtlFreeHeap(RtlProcessHeap(), 0, ReplacementFreeBuffer);
|
|
RtlFreeHeap(RtlProcessHeap(), 0, BackupNTFileName.Buffer);
|
|
|
|
RtlFreeHeap(RtlProcessHeap(), 0, ReplacedStreamInfo);
|
|
RtlFreeHeap(RtlProcessHeap(), 0, ReplacementStreamInfo);
|
|
RtlFreeHeap(RtlProcessHeap(), 0, ReplaceRenameInfo);
|
|
RtlFreeHeap(RtlProcessHeap(), 0, BackupReplaceRenameInfo);
|
|
|
|
if (pwszTempBackupFile != NULL &&
|
|
pwszTempBackupFile != lpBackupFileName) {
|
|
DeleteFileW (pwszTempBackupFile);
|
|
RtlFreeHeap(RtlProcessHeap(), 0, pwszTempBackupFile);
|
|
}
|
|
|
|
}
|
|
|
|
Exit:
|
|
|
|
return fSuccess;
|
|
}
|
|
|
|
|
|
VOID
|
|
BaseMarkFileForDelete(
|
|
HANDLE File,
|
|
DWORD FileAttributes
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine marks a file for delete, so that when the supplied handle
|
|
is closed, the file will actually be deleted.
|
|
|
|
Arguments:
|
|
|
|
File - Supplies a handle to the file that is to be marked for delete.
|
|
|
|
FileAttributes - Attributes for the file, if known. Zero indicates they
|
|
are unknown.
|
|
|
|
Return Value:
|
|
|
|
None.
|
|
|
|
--*/
|
|
|
|
{
|
|
#undef DeleteFile
|
|
|
|
FILE_DISPOSITION_INFORMATION DispositionInformation;
|
|
IO_STATUS_BLOCK IoStatus;
|
|
FILE_BASIC_INFORMATION BasicInformation;
|
|
|
|
if (!FileAttributes) {
|
|
BasicInformation.FileAttributes = 0;
|
|
NtQueryInformationFile(
|
|
File,
|
|
&IoStatus,
|
|
&BasicInformation,
|
|
sizeof(BasicInformation),
|
|
FileBasicInformation
|
|
);
|
|
FileAttributes = BasicInformation.FileAttributes;
|
|
}
|
|
|
|
if (FileAttributes & FILE_ATTRIBUTE_READONLY) {
|
|
RtlZeroMemory(&BasicInformation, sizeof(BasicInformation));
|
|
BasicInformation.FileAttributes = FILE_ATTRIBUTE_NORMAL;
|
|
NtSetInformationFile(
|
|
File,
|
|
&IoStatus,
|
|
&BasicInformation,
|
|
sizeof(BasicInformation),
|
|
FileBasicInformation
|
|
);
|
|
}
|
|
|
|
DispositionInformation.DeleteFile = TRUE;
|
|
NtSetInformationFile(
|
|
File,
|
|
&IoStatus,
|
|
&DispositionInformation,
|
|
sizeof(DispositionInformation),
|
|
FileDispositionInformation
|
|
);
|
|
|
|
}
|
|
|