698 lines
21 KiB
C
698 lines
21 KiB
C
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/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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copy.c
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Abstract:
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This module contains the routine to copy a file.
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Author:
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David Treadwell (davidtr) 24-Jan-1990
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Revision History:
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--*/
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#include "precomp.h"
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#include "copy.tmh"
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#pragma hdrstop
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#define BugCheckFileId SRV_FILE_COPY
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text( PAGE, SrvCopyFile )
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#endif
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#define EOF 0x1A // Control-Z == end of file
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NTSTATUS
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SrvCopyFile (
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IN HANDLE SourceHandle,
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IN HANDLE TargetHandle,
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IN USHORT SmbOpenFunction,
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IN USHORT SmbFlags,
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IN ULONG ActionTaken
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)
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/*++
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Routine Description:
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This routine copies or appends from the source file to the target file.
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It does the following:
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read sources EAs, attributes, size
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create/open target using source's info
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read data from source and write it to target
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Arguments:
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SourceHandle - handle to source file opened with SRV_COPY_SOURCE_ACCESS
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for synchronous access.
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TargetHandle - handle to target file opened with SRV_COPY_SOURCE_ACCESS
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for synchronous access.
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SmbOpenFunction - used to determine whether the source should be
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appended to the end of the target.
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ActionTaken - Information field of IO status block from the NtCreateFile
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where the target was opened. This is used to determine whether
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the target should be deleted if an error occurs.
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Return Value:
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NTSTATUS - STATUS_SUCCESS or error.
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--*/
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{
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NTSTATUS status;
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NTSTATUS readStatus = STATUS_SUCCESS;
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NTSTATUS writeStatus = STATUS_SUCCESS;
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IO_STATUS_BLOCK ioStatusBlock;
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FILE_EA_INFORMATION eaInfo;
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SRV_NETWORK_OPEN_INFORMATION sourceNetworkOpenInformation;
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SRV_NETWORK_OPEN_INFORMATION targetNetworkOpenInformation;
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FILE_POSITION_INFORMATION positionInfo;
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FILE_ALLOCATION_INFORMATION allocationInfo;
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LARGE_INTEGER fileOffset;
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BOOLEAN append;
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BOOLEAN sourceIsAscii;
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BOOLEAN targetIsAscii;
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PCHAR ioBuffer;
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ULONG ioBufferSize;
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ULONG offset = 0;
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ULONG bytesRead;
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BOOLEAN eofFound = FALSE;
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CHAR lastByte;
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PAGED_CODE( );
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//
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// Find out if we are supposed to append to the target file or
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// overwrite it, and whether this is a binary or ASCII copy for
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// the source and target. In a binary copy for the source, we stop
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// the first time we see EOF (control-Z). In a binary copy for the
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// target, we must make sure that there is exactly one EOF in the
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// file and that this is the last character of the file.
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//
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append = SmbOfunAppend( SmbOpenFunction );
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sourceIsAscii = (BOOLEAN)((SmbFlags & SMB_COPY_SOURCE_ASCII) != 0);
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targetIsAscii = (BOOLEAN)((SmbFlags & SMB_COPY_TARGET_ASCII) != 0);
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//
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// Find the size of the EAs on the source.
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//
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status = NtQueryInformationFile(
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SourceHandle,
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&ioStatusBlock,
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&eaInfo,
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sizeof(eaInfo),
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FileEaInformation
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);
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if ( !NT_SUCCESS(status) ) {
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INTERNAL_ERROR(
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ERROR_LEVEL_UNEXPECTED,
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"SrvCopyFile: NtQueryInformationFile (source EA size) failed: %X",
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status,
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NULL
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);
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SrvLogServiceFailure( SRV_SVC_NT_QUERY_INFO_FILE, status );
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return status;
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}
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//
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// If the source file has EAs, get them and write them to the target
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// file.
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//
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if ( eaInfo.EaSize > 0 ) {
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PCHAR eaBuffer;
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ULONG eaBufferSize;
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//
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// Allocate a buffer large enough to hold the EAs.
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//
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//
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// HACKHACK: eaInfo.EaSize is the size needed by OS/2. For NT,
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// the system has no way of telling us how big a buffer we need.
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// According to BrianAn, this should not be bigger than twice
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// what OS/2 needs.
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//
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eaBufferSize = eaInfo.EaSize * EA_SIZE_FUDGE_FACTOR;
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eaBuffer = ALLOCATE_NONPAGED_POOL( eaBufferSize, BlockTypeDataBuffer );
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if ( eaBuffer == NULL ) {
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INTERNAL_ERROR(
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ERROR_LEVEL_EXPECTED,
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"SrvCopyFile: Unable to allocate %d bytes nonpaged pool",
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eaBufferSize,
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NULL
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);
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return STATUS_INSUFF_SERVER_RESOURCES;
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}
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status = SrvIssueQueryEaRequest(
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SourceHandle,
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eaBuffer,
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eaBufferSize,
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NULL,
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0L,
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FALSE,
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NULL
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);
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if ( NT_SUCCESS(status) ) {
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status = ioStatusBlock.Status;
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}
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if ( !NT_SUCCESS(status) ) {
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INTERNAL_ERROR(
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ERROR_LEVEL_UNEXPECTED,
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"SrvCopyFile: SrvIssueQueryEaRequest failed: %X",
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status,
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NULL
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);
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SrvLogServiceFailure( SRV_SVC_NT_QUERY_EAS, status );
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DEALLOCATE_NONPAGED_POOL( eaBuffer );
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return status;
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}
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status = SrvIssueSetEaRequest(
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TargetHandle,
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eaBuffer,
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eaBufferSize,
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NULL
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);
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if ( NT_SUCCESS(status) ) {
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status = ioStatusBlock.Status;
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}
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if ( status == STATUS_EAS_NOT_SUPPORTED ||
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status == STATUS_NOT_IMPLEMENTED ) {
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if ( SrvAreEasNeeded( (PFILE_FULL_EA_INFORMATION)eaBuffer ) ) {
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DEALLOCATE_NONPAGED_POOL( eaBuffer );
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return STATUS_EAS_NOT_SUPPORTED;
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}
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status = STATUS_SUCCESS;
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}
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DEALLOCATE_NONPAGED_POOL( eaBuffer );
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if ( !NT_SUCCESS(status) ) {
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INTERNAL_ERROR(
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ERROR_LEVEL_UNEXPECTED,
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"SrvCopyFile: SrvIssueSetEaRequest failed: %X",
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status,
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NULL
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);
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SrvLogServiceFailure( SRV_SVC_NT_SET_EAS, status );
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return status;
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}
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}
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//
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// Get the various attributes of the source file--size, times, etc.
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// These are used later on to set attributes of the target file.
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//
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status = SrvQueryNetworkOpenInformation(
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SourceHandle,
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NULL,
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&sourceNetworkOpenInformation,
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FALSE
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);
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if ( !NT_SUCCESS(status) ) {
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INTERNAL_ERROR(
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ERROR_LEVEL_UNEXPECTED,
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"SrvCopyFile: NtQueryInformationFile "
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"returned %X",
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status,
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NULL
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);
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SrvLogServiceFailure( SRV_SVC_NT_QUERY_INFO_FILE, status );
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return status;
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}
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//
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// If target was opened and we're in append mode, save the target's
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// original size and time and set target file pointer to the end of
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// the file.
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//
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if ( append ) {
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status = SrvQueryNetworkOpenInformation(
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TargetHandle,
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NULL,
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&targetNetworkOpenInformation,
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FALSE
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);
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if ( !NT_SUCCESS(status) ) {
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INTERNAL_ERROR(
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ERROR_LEVEL_UNEXPECTED,
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"SrvCopyFile: NtQueryInformationFile "
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"for target returned %X",
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status,
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NULL
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);
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SrvLogServiceFailure( SRV_SVC_NT_QUERY_INFO_FILE, status );
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return status;
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}
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//
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// If the target is in ASCII mode, then see if the last character
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// of the target file is EOF (^Z). If so, then set EndOfFile
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// such that this character will be overwritten.
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//
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if ( targetIsAscii && (targetNetworkOpenInformation.EndOfFile.QuadPart > 0) ) {
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LARGE_INTEGER fileOffset;
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fileOffset.QuadPart = targetNetworkOpenInformation.EndOfFile.QuadPart - 1;
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status = NtReadFile(
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TargetHandle,
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NULL,
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NULL,
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NULL,
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&ioStatusBlock,
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&lastByte,
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sizeof(lastByte),
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&fileOffset,
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NULL
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);
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if ( !NT_SUCCESS(status) ) {
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INTERNAL_ERROR(
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ERROR_LEVEL_UNEXPECTED,
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"SrvCopyFile: NtReadFile for target last byte"
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"returned %X",
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status,
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NULL
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);
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SrvLogServiceFailure( SRV_SVC_NT_READ_FILE, status );
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return status;
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}
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if ( lastByte == EOF ) {
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targetNetworkOpenInformation.EndOfFile = fileOffset;
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}
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}
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positionInfo.CurrentByteOffset = targetNetworkOpenInformation.EndOfFile;
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status = NtSetInformationFile(
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TargetHandle,
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&ioStatusBlock,
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&positionInfo,
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sizeof(positionInfo),
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FilePositionInformation
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);
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if ( !NT_SUCCESS(status) ) {
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INTERNAL_ERROR(
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ERROR_LEVEL_UNEXPECTED,
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"SrvCopyFile: NtSetInformationFile(position information)"
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"for target returned %X",
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status,
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NULL
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);
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SrvLogServiceFailure( SRV_SVC_NT_SET_INFO_FILE, status );
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return status;
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}
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}
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//
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// Set the new size of the output file. Doing this avoids forcing
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// the file system to automatically extend the file bit by bit.
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//
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if ( append ) {
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allocationInfo.AllocationSize.QuadPart =
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targetNetworkOpenInformation.EndOfFile.QuadPart +
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sourceNetworkOpenInformation.EndOfFile.QuadPart;
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} else {
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allocationInfo.AllocationSize = sourceNetworkOpenInformation.EndOfFile;
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}
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if ( 0 ) {
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KdPrint(( "SrvCopyFile: Setting allocation size of target to "
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"%ld (0x%lx) bytes\n",
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allocationInfo.AllocationSize.LowPart,
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allocationInfo.AllocationSize.LowPart
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));
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KdPrint(( " %ld (0x%lx) blocks + %ld (0x%lx) bytes\n",
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allocationInfo.AllocationSize.LowPart / 512,
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allocationInfo.AllocationSize.LowPart / 512,
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allocationInfo.AllocationSize.LowPart % 512,
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allocationInfo.AllocationSize.LowPart % 512
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));
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}
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status = NtSetInformationFile(
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TargetHandle,
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&ioStatusBlock,
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&allocationInfo,
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sizeof(allocationInfo),
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FileAllocationInformation
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);
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if ( !NT_SUCCESS(status) ) {
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INTERNAL_ERROR(
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ERROR_LEVEL_UNEXPECTED,
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"SrvCopyFile: NtSetInformationFile(allocation information)"
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"for target returned %X",
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status,
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NULL
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);
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SrvLogServiceFailure( SRV_SVC_NT_SET_INFO_FILE, status );
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return status;
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}
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//
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// Allocate a buffer from server heap to use for the data copy.
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//
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ioBufferSize = 4096;
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ioBuffer = ALLOCATE_HEAP_COLD( ioBufferSize, BlockTypeDataBuffer );
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if ( ioBuffer == NULL ) {
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INTERNAL_ERROR(
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ERROR_LEVEL_EXPECTED,
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"SrvCopyFile: Unable to allocate %d bytes from heap.",
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ioBufferSize,
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NULL
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);
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return STATUS_INSUFF_SERVER_RESOURCES;
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}
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|
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|||
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//
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// Copy data--read from source, write to target. Do this until
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// all the data is written or an error occurs.
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//
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fileOffset.QuadPart = (LONG)FILE_USE_FILE_POINTER_POSITION;
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while ( !eofFound ) {
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|
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if ( 0 ) {
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KdPrint(( "SrvCopyFile: reading %ld (0x%lx) bytes at "
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"offset %ld (0x%lx)\n",
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ioBufferSize, ioBufferSize, offset, offset ));
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}
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readStatus = NtReadFile(
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SourceHandle,
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NULL, // Event
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NULL, // ApcRoutine
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NULL, // ApcContext
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&ioStatusBlock,
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ioBuffer,
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ioBufferSize,
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&fileOffset,
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NULL // Key
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);
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if ( !NT_SUCCESS(readStatus) && readStatus != STATUS_END_OF_FILE ) {
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INTERNAL_ERROR(
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|
ERROR_LEVEL_UNEXPECTED,
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|||
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"SrvCopyFile: NtReadFile returned %X",
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|||
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readStatus,
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|||
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NULL
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);
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FREE_HEAP( ioBuffer );
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SrvLogServiceFailure( SRV_SVC_NT_READ_FILE, readStatus );
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return readStatus;
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}
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|
IF_SMB_DEBUG(FILE_CONTROL2) {
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|
KdPrint(( "NtReadFile: Read %p bytes from source file\n",
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|||
|
(PVOID)ioStatusBlock.Information ));
|
|||
|
}
|
|||
|
if ( ioStatusBlock.Information == 0 ||
|
|||
|
readStatus == STATUS_END_OF_FILE ) {
|
|||
|
break;
|
|||
|
}
|
|||
|
|
|||
|
bytesRead = (ULONG)ioStatusBlock.Information;
|
|||
|
if ( 0 ) {
|
|||
|
IO_STATUS_BLOCK iosb;
|
|||
|
|
|||
|
status = NtQueryInformationFile(
|
|||
|
SourceHandle,
|
|||
|
&iosb,
|
|||
|
&positionInfo,
|
|||
|
sizeof(positionInfo),
|
|||
|
FilePositionInformation
|
|||
|
);
|
|||
|
|
|||
|
if ( !NT_SUCCESS( status ) ) {
|
|||
|
INTERNAL_ERROR(
|
|||
|
ERROR_LEVEL_UNEXPECTED,
|
|||
|
"SrvCopyFile: NtQueryInformationFile returned %X",
|
|||
|
status,
|
|||
|
NULL
|
|||
|
);
|
|||
|
|
|||
|
FREE_HEAP( ioBuffer );
|
|||
|
|
|||
|
SrvLogServiceFailure( SRV_SVC_NT_QUERY_INFO_FILE, status );
|
|||
|
return status;
|
|||
|
}
|
|||
|
|
|||
|
if ( positionInfo.CurrentByteOffset.LowPart !=
|
|||
|
offset + bytesRead ) {
|
|||
|
KdPrint(( "SrvCopyFile: SOURCE FILE POSITION NOT PROPERLY "
|
|||
|
"UPDATED!!!\n" ));
|
|||
|
KdPrint(( " expected %ld + %ld = %ld (0x%lx); ",
|
|||
|
offset, bytesRead,
|
|||
|
offset + bytesRead, offset + bytesRead ));
|
|||
|
KdPrint(( "got %ld (0x%lx)\n",
|
|||
|
positionInfo.CurrentByteOffset.LowPart,
|
|||
|
positionInfo.CurrentByteOffset.LowPart ));
|
|||
|
}
|
|||
|
KdPrint(( "SrvCopyFile: writing 0x%p bytes at offset %ld (0x%lx)\n",
|
|||
|
(PVOID)ioStatusBlock.Information,
|
|||
|
offset, offset ));
|
|||
|
}
|
|||
|
|
|||
|
//
|
|||
|
// If the source file is in ASCII mode, then search for EOF in the
|
|||
|
// buffer. We copy until we hit the first EOF, at which point
|
|||
|
// we quit.
|
|||
|
//
|
|||
|
|
|||
|
if ( sourceIsAscii ) {
|
|||
|
|
|||
|
ULONG i;
|
|||
|
|
|||
|
for ( i = 0; i < bytesRead; i++ ) {
|
|||
|
if ( ((PCHAR)ioBuffer)[i] == EOF ) {
|
|||
|
bytesRead = i + 1;
|
|||
|
eofFound = TRUE;
|
|||
|
break;
|
|||
|
}
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
//
|
|||
|
// Save the last byte read. This is useful to make sure that
|
|||
|
// there is an EOF character if the target file is ASCII.
|
|||
|
//
|
|||
|
|
|||
|
lastByte = ((PCHAR)ioBuffer)[bytesRead-1];
|
|||
|
|
|||
|
writeStatus = NtWriteFile(
|
|||
|
TargetHandle,
|
|||
|
NULL, // Event
|
|||
|
NULL, // ApcRoutine
|
|||
|
NULL, // ApcContext
|
|||
|
&ioStatusBlock,
|
|||
|
ioBuffer,
|
|||
|
bytesRead,
|
|||
|
&fileOffset,
|
|||
|
NULL // Key
|
|||
|
);
|
|||
|
|
|||
|
if ( !NT_SUCCESS(writeStatus) ) {
|
|||
|
INTERNAL_ERROR(
|
|||
|
ERROR_LEVEL_UNEXPECTED,
|
|||
|
"SrvCopyFile: NtWriteFile returned %X",
|
|||
|
writeStatus,
|
|||
|
NULL
|
|||
|
);
|
|||
|
FREE_HEAP( ioBuffer );
|
|||
|
|
|||
|
SrvLogServiceFailure( SRV_SVC_NT_WRITE_FILE, writeStatus );
|
|||
|
return writeStatus;
|
|||
|
}
|
|||
|
|
|||
|
IF_SMB_DEBUG(FILE_CONTROL2) {
|
|||
|
KdPrint(( "NtWriteFile: wrote %p bytes to target file\n",
|
|||
|
(PVOID)ioStatusBlock.Information ));
|
|||
|
}
|
|||
|
|
|||
|
if ( 0 ) {
|
|||
|
IO_STATUS_BLOCK iosb;
|
|||
|
if ( ioStatusBlock.Information != bytesRead ) {
|
|||
|
KdPrint(( "SrvCopyFile: WRITE COUNT MISMATCH!!!\n" ));
|
|||
|
KdPrint(( " Bytes read: %ld (0x%lx); Bytes written: 0x%p \n",
|
|||
|
bytesRead, bytesRead,
|
|||
|
(PVOID)ioStatusBlock.Information ));
|
|||
|
}
|
|||
|
status = NtQueryInformationFile(
|
|||
|
SourceHandle,
|
|||
|
&iosb,
|
|||
|
&positionInfo,
|
|||
|
sizeof(positionInfo),
|
|||
|
FilePositionInformation
|
|||
|
);
|
|||
|
|
|||
|
if ( !NT_SUCCESS( status ) ) {
|
|||
|
INTERNAL_ERROR(
|
|||
|
ERROR_LEVEL_UNEXPECTED,
|
|||
|
"SrvCopyFile: NtQueryInformationFile returned %X",
|
|||
|
status,
|
|||
|
NULL
|
|||
|
);
|
|||
|
FREE_HEAP( ioBuffer );
|
|||
|
|
|||
|
SrvLogServiceFailure( SRV_SVC_NT_QUERY_INFO_FILE, status );
|
|||
|
return status;
|
|||
|
}
|
|||
|
|
|||
|
if ( positionInfo.CurrentByteOffset.LowPart !=
|
|||
|
offset + ioStatusBlock.Information ) {
|
|||
|
|
|||
|
KdPrint(( "SrvCopyFile: TARGET FILE POSITION NOT PROPERLY "
|
|||
|
"UPDATED!!!\n" ));
|
|||
|
KdPrint(( " expected 0x%lx + 0x%p = 0x%p; ",
|
|||
|
offset, (PVOID)(ioStatusBlock.Information),
|
|||
|
(PVOID)(offset + ioStatusBlock.Information) ));
|
|||
|
KdPrint(( "got %ld (0x%lx)\n",
|
|||
|
positionInfo.CurrentByteOffset.LowPart,
|
|||
|
positionInfo.CurrentByteOffset.LowPart ));
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
offset += bytesRead;
|
|||
|
|
|||
|
}
|
|||
|
|
|||
|
FREE_HEAP( ioBuffer );
|
|||
|
|
|||
|
//
|
|||
|
// If target was created or replaced, set its time to that of the source.
|
|||
|
//
|
|||
|
|
|||
|
if ( ActionTaken == FILE_CREATED || ActionTaken == FILE_SUPERSEDED ) {
|
|||
|
|
|||
|
FILE_BASIC_INFORMATION basicInfo;
|
|||
|
|
|||
|
basicInfo.CreationTime = sourceNetworkOpenInformation.CreationTime;
|
|||
|
basicInfo.LastAccessTime = sourceNetworkOpenInformation.LastAccessTime;
|
|||
|
basicInfo.LastWriteTime = sourceNetworkOpenInformation.LastWriteTime;
|
|||
|
basicInfo.ChangeTime = sourceNetworkOpenInformation.ChangeTime;
|
|||
|
basicInfo.FileAttributes = sourceNetworkOpenInformation.FileAttributes;
|
|||
|
|
|||
|
status = NtSetInformationFile(
|
|||
|
TargetHandle,
|
|||
|
&ioStatusBlock,
|
|||
|
&basicInfo,
|
|||
|
sizeof(basicInfo),
|
|||
|
FileBasicInformation
|
|||
|
);
|
|||
|
|
|||
|
if ( !NT_SUCCESS(status) ) {
|
|||
|
INTERNAL_ERROR(
|
|||
|
ERROR_LEVEL_UNEXPECTED,
|
|||
|
"SrvCopyFile: NtSetInformationFile(basic information) for"
|
|||
|
"target returned %X",
|
|||
|
status,
|
|||
|
NULL
|
|||
|
);
|
|||
|
|
|||
|
SrvLogServiceFailure( SRV_SVC_NT_SET_INFO_FILE, status );
|
|||
|
return status;
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
//
|
|||
|
// If the target is ASCII and the last byte was not an EOF, then
|
|||
|
// put on an EOF character.
|
|||
|
//
|
|||
|
|
|||
|
if ( targetIsAscii && lastByte != EOF ) {
|
|||
|
|
|||
|
lastByte = EOF;
|
|||
|
|
|||
|
status = NtWriteFile(
|
|||
|
TargetHandle,
|
|||
|
NULL,
|
|||
|
NULL,
|
|||
|
NULL,
|
|||
|
&ioStatusBlock,
|
|||
|
&lastByte,
|
|||
|
sizeof(lastByte),
|
|||
|
NULL,
|
|||
|
NULL
|
|||
|
);
|
|||
|
|
|||
|
if ( !NT_SUCCESS(status) ) {
|
|||
|
INTERNAL_ERROR(
|
|||
|
ERROR_LEVEL_UNEXPECTED,
|
|||
|
"SrvCopyFile: NtWriteFile returned %X",
|
|||
|
status,
|
|||
|
NULL
|
|||
|
);
|
|||
|
|
|||
|
SrvLogServiceFailure( SRV_SVC_NT_WRITE_FILE, status );
|
|||
|
return status;
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
return STATUS_SUCCESS;
|
|||
|
|
|||
|
} // SrvCopyFile
|
|||
|
|