NTSTATUS
FFSLockVcb(
IN PFFS_VCB Vcb,
IN PFILE_OBJECT FileObject)
{
NTSTATUS Status;
PAGED_CODE();
_SEH2_TRY
{
if (FlagOn(Vcb->Flags, VCB_VOLUME_LOCKED))
{
FFSPrint((DBG_INFO, "FFSLockVolume: Volume is already locked.\n"));
Status = STATUS_ACCESS_DENIED;
_SEH2_LEAVE;
}
if (Vcb->OpenFileHandleCount > (ULONG)(FileObject ? 1 : 0))
{
FFSPrint((DBG_INFO, "FFSLockVcb: There are still opened files.\n"));
Status = STATUS_ACCESS_DENIED;
_SEH2_LEAVE;
}
if (!FFSIsHandleCountZero(Vcb))
{
FFSPrint((DBG_INFO, "FFSLockVcb: Thare are still opened files.\n"));
Status = STATUS_ACCESS_DENIED;
_SEH2_LEAVE;
}
SetFlag(Vcb->Flags, VCB_VOLUME_LOCKED);
FFSSetVpbFlag(Vcb->Vpb, VPB_LOCKED);
Vcb->LockFile = FileObject;
FFSPrint((DBG_INFO, "FFSLockVcb: Volume locked.\n"));
Status = STATUS_SUCCESS;
}
_SEH2_FINALLY
{
// Nothing
} _SEH2_END;
return Status;
}
__drv_mustHoldCriticalRegion
NTSTATUS
FFSPurgeFile(
IN PFFS_FCB Fcb,
IN BOOLEAN FlushBeforePurge)
{
IO_STATUS_BLOCK IoStatus;
PAGED_CODE();
ASSERT(Fcb != NULL);
ASSERT((Fcb->Identifier.Type == FFSFCB) &&
(Fcb->Identifier.Size == sizeof(FFS_FCB)));
if(!IsFlagOn(Fcb->Vcb->Flags, VCB_READ_ONLY) && FlushBeforePurge &&
!IsFlagOn(Fcb->Vcb->Flags, VCB_WRITE_PROTECTED))
{
FFSPrint((DBG_INFO, "FFSPurgeFile: CcFlushCache on %s.\n",
Fcb->AnsiFileName.Buffer));
ExAcquireSharedStarveExclusive(&Fcb->PagingIoResource, TRUE);
ExReleaseResourceLite(&Fcb->PagingIoResource);
CcFlushCache(&Fcb->SectionObject, NULL, 0, &IoStatus);
ClearFlag(Fcb->Flags, FCB_FILE_MODIFIED);
}
if (Fcb->SectionObject.ImageSectionObject)
{
FFSPrint((DBG_INFO, "FFSPurgeFile: MmFlushImageSection on %s.\n",
Fcb->AnsiFileName.Buffer));
MmFlushImageSection(&Fcb->SectionObject, MmFlushForWrite);
}
if (Fcb->SectionObject.DataSectionObject)
{
FFSPrint((DBG_INFO, "FFSPurgeFile: CcPurgeCacheSection on %s.\n",
Fcb->AnsiFileName.Buffer));
CcPurgeCacheSection(&Fcb->SectionObject, NULL, 0, FALSE);
}
return STATUS_SUCCESS;
}
BOOLEAN
FFSIsHandleCountZero(
IN PFFS_VCB Vcb)
{
PFFS_FCB Fcb;
PLIST_ENTRY List;
PAGED_CODE();
for(List = Vcb->FcbList.Flink;
List != &Vcb->FcbList;
List = List->Flink)
{
Fcb = CONTAINING_RECORD(List, FFS_FCB, Next);
ASSERT((Fcb->Identifier.Type == FFSFCB) &&
(Fcb->Identifier.Size == sizeof(FFS_FCB)));
FFSPrint((DBG_INFO, "FFSIsHandleCountZero: Inode:%xh File:%S OpenHandleCount=%xh\n",
Fcb->FFSMcb->Inode, Fcb->FFSMcb->ShortName.Buffer, Fcb->OpenHandleCount));
if (Fcb->OpenHandleCount)
{
return FALSE;
}
}
return TRUE;
}
NTSTATUS
FFSUnlockVcb(
IN PFFS_VCB Vcb,
IN PFILE_OBJECT FileObject)
{
NTSTATUS Status;
PAGED_CODE();
_SEH2_TRY
{
if (FileObject && FileObject->FsContext != Vcb)
{
Status = STATUS_NOT_LOCKED;
_SEH2_LEAVE;
}
if (!FlagOn(Vcb->Flags, VCB_VOLUME_LOCKED))
{
FFSPrint((DBG_ERROR, ": FFSUnlockVcb: Volume is not locked.\n"));
Status = STATUS_NOT_LOCKED;
_SEH2_LEAVE;
}
if (Vcb->LockFile == FileObject)
{
ClearFlag(Vcb->Flags, VCB_VOLUME_LOCKED);
FFSClearVpbFlag(Vcb->Vpb, VPB_LOCKED);
FFSPrint((DBG_INFO, "FFSUnlockVcb: Volume unlocked.\n"));
Status = STATUS_SUCCESS;
}
else
{
Status = STATUS_NOT_LOCKED;
}
}
_SEH2_FINALLY
{
// Nothing
} _SEH2_END;
return Status;
}
__drv_mustHoldCriticalRegion
VOID
FFSFreeMcb(
IN PFFS_MCB Mcb)
{
#ifndef __REACTOS__
PFFS_MCB Parent = Mcb->Parent;
#endif
PAGED_CODE();
ASSERT(Mcb != NULL);
ASSERT((Mcb->Identifier.Type == FFSMCB) &&
(Mcb->Identifier.Size == sizeof(FFS_MCB)));
FFSPrint((DBG_INFO, "FFSFreeMcb: Mcb %S will be freed.\n", Mcb->ShortName.Buffer));
if (Mcb->ShortName.Buffer)
ExFreePool(Mcb->ShortName.Buffer);
if (FlagOn(Mcb->Flags, MCB_FROM_POOL))
{
ExFreePool(Mcb);
}
else
{
ExAcquireResourceExclusiveLite(
&FFSGlobal->LAResource,
TRUE);
ExFreeToPagedLookasideList(&(FFSGlobal->FFSMcbLookasideList), Mcb);
ExReleaseResourceForThreadLite(
&FFSGlobal->LAResource,
ExGetCurrentResourceThread());
}
ExAcquireResourceExclusiveLite(
&FFSGlobal->CountResource,
TRUE);
FFSGlobal->McbAllocated--;
ExReleaseResourceForThreadLite(
&FFSGlobal->CountResource,
ExGetCurrentResourceThread());
}
VOID
FFSFloppyFlushDpc(
IN PKDPC Dpc,
IN PVOID DeferredContext,
IN PVOID SystemArgument1,
IN PVOID SystemArgument2)
{
PFFS_FLPFLUSH_CONTEXT Context;
Context = (PFFS_FLPFLUSH_CONTEXT)DeferredContext;
FFSPrint((DBG_USER, "FFSFloppyFlushDpc is to be started...\n"));
ExInitializeWorkItem(&Context->Item,
FFSFloppyFlush,
Context);
ExQueueWorkItem(&Context->Item, CriticalWorkQueue);
}
VOID
FFSFloppyFlush(
IN PVOID Parameter)
{
PFFS_FLPFLUSH_CONTEXT Context;
PFILE_OBJECT FileObject;
PFFS_FCB Fcb;
PFFS_VCB Vcb;
Context = (PFFS_FLPFLUSH_CONTEXT) Parameter;
FileObject = Context->FileObject;
Fcb = Context->Fcb;
Vcb = Context->Vcb;
FFSPrint((DBG_USER, "FFSFloppyFlushing ...\n"));
IoSetTopLevelIrp((PIRP)FSRTL_FSP_TOP_LEVEL_IRP);
if (Vcb)
{
ExAcquireSharedStarveExclusive(&Vcb->PagingIoResource, TRUE);
ExReleaseResource(&Vcb->PagingIoResource);
CcFlushCache(&(Vcb->SectionObject), NULL, 0, NULL);
}
if (FileObject)
{
ASSERT(Fcb == (PFFS_FCB)FileObject->FsContext);
ExAcquireSharedStarveExclusive(&Fcb->PagingIoResource, TRUE);
ExReleaseResource(&Fcb->PagingIoResource);
CcFlushCache(&(Fcb->SectionObject), NULL, 0, NULL);
ObDereferenceObject(FileObject);
}
IoSetTopLevelIrp(NULL);
ExFreePool(Parameter);
}
VOID
FFSAddMcbNode(
PFFS_VCB Vcb,
PFFS_MCB Parent,
PFFS_MCB Child)
{
PFFS_MCB TmpMcb = Parent->Child;
PAGED_CODE();
if(IsFlagOn(Child->Flags, MCB_IN_TREE))
{
FFSBreakPoint();
FFSPrint((DBG_ERROR, "FFSAddMcbNode: Child Mcb is alreay in the tree.\n"));
return;
}
if (TmpMcb)
{
ASSERT(TmpMcb->Parent == Parent);
while (TmpMcb->Next)
{
TmpMcb = TmpMcb->Next;
ASSERT(TmpMcb->Parent == Parent);
}
TmpMcb->Next = Child;
Child->Parent = Parent;
Child->Next = NULL;
}
else
{
Parent->Child = Child;
Child->Parent = Parent;
Child->Next = NULL;
}
InsertTailList(&(Vcb->McbList), &(Child->Link));
SetFlag(Child->Flags, MCB_IN_TREE);
}
__drv_mustHoldCriticalRegion
NTSTATUS
FFSFileSystemControl(
IN PFFS_IRP_CONTEXT IrpContext)
{
NTSTATUS Status;
PAGED_CODE();
ASSERT(IrpContext);
ASSERT((IrpContext->Identifier.Type == FFSICX) &&
(IrpContext->Identifier.Size == sizeof(FFS_IRP_CONTEXT)));
switch (IrpContext->MinorFunction)
{
case IRP_MN_USER_FS_REQUEST:
Status = FFSUserFsRequest(IrpContext);
break;
case IRP_MN_MOUNT_VOLUME:
Status = FFSMountVolume(IrpContext);
break;
case IRP_MN_VERIFY_VOLUME:
Status = FFSVerifyVolume(IrpContext);
break;
default:
FFSPrint((DBG_ERROR, "FFSFilsSystemControl: Invalid Device Request.\n"));
Status = STATUS_INVALID_DEVICE_REQUEST;
FFSCompleteIrpContext(IrpContext, Status);
}
return Status;
}
NTSTATUS
FFSDispatchRequest(
IN PFFS_IRP_CONTEXT IrpContext)
{
ASSERT(IrpContext);
ASSERT((IrpContext->Identifier.Type == FFSICX) &&
(IrpContext->Identifier.Size == sizeof(FFS_IRP_CONTEXT)));
switch (IrpContext->MajorFunction)
{
case IRP_MJ_CREATE:
return FFSCreate(IrpContext);
case IRP_MJ_CLOSE:
return FFSClose(IrpContext);
case IRP_MJ_READ:
return FFSRead(IrpContext);
case IRP_MJ_WRITE:
return FFSWrite(IrpContext);
case IRP_MJ_FLUSH_BUFFERS:
return FFSFlush(IrpContext);
case IRP_MJ_QUERY_INFORMATION:
return FFSQueryInformation(IrpContext);
case IRP_MJ_SET_INFORMATION:
return FFSSetInformation(IrpContext);
case IRP_MJ_QUERY_VOLUME_INFORMATION:
return FFSQueryVolumeInformation(IrpContext);
case IRP_MJ_SET_VOLUME_INFORMATION:
return FFSSetVolumeInformation(IrpContext);
case IRP_MJ_DIRECTORY_CONTROL:
return FFSDirectoryControl(IrpContext);
case IRP_MJ_FILE_SYSTEM_CONTROL:
return FFSFileSystemControl(IrpContext);
case IRP_MJ_DEVICE_CONTROL:
return FFSDeviceControl(IrpContext);
case IRP_MJ_LOCK_CONTROL:
return FFSLockControl(IrpContext);
case IRP_MJ_CLEANUP:
return FFSCleanup(IrpContext);
case IRP_MJ_SHUTDOWN:
return FFSShutDown(IrpContext);
#if (_WIN32_WINNT >= 0x0500)
case IRP_MJ_PNP:
return FFSPnp(IrpContext);
#endif //(_WIN32_WINNT >= 0x0500)
default:
FFSPrint((DBG_ERROR, "FFSDispatchRequest: Unexpected major function: %xh\n",
IrpContext->MajorFunction));
FFSCompleteIrpContext(IrpContext, STATUS_DRIVER_INTERNAL_ERROR);
return STATUS_DRIVER_INTERNAL_ERROR;
}
}
PFFS_MCB
FFSAllocateMcb(
PFFS_VCB Vcb,
PUNICODE_STRING FileName,
ULONG FileAttr)
{
PFFS_MCB Mcb = NULL;
PLIST_ENTRY List = NULL;
ULONG Extra = 0;
#define MCB_NUM_SHIFT 0x04
if (FFSGlobal->McbAllocated > (FFSGlobal->MaxDepth << MCB_NUM_SHIFT))
Extra = FFSGlobal->McbAllocated -
(FFSGlobal->MaxDepth << MCB_NUM_SHIFT) +
FFSGlobal->MaxDepth;
FFSPrint((DBG_INFO,
"FFSAllocateMcb: CurrDepth=%xh/%xh/%xh FileName=%S\n",
FFSGlobal->McbAllocated,
FFSGlobal->MaxDepth << MCB_NUM_SHIFT,
FFSGlobal->FcbAllocated,
FileName->Buffer));
List = Vcb->McbList.Flink;
while ((List != &(Vcb->McbList)) && (Extra > 0))
{
Mcb = CONTAINING_RECORD(List, FFS_MCB, Link);
List = List->Flink;
if ((Mcb->Inode != 2) && (Mcb->Child == NULL) &&
(Mcb->FFSFcb == NULL) && (!IsMcbUsed(Mcb)))
{
FFSPrint((DBG_INFO, "FFSAllocateMcb: Mcb %S will be freed.\n",
Mcb->ShortName.Buffer));
if (FFSDeleteMcbNode(Vcb, Vcb->McbTree, Mcb))
{
FFSFreeMcb(Mcb);
Extra--;
}
}
}
ExAcquireResourceExclusiveLite(
&FFSGlobal->LAResource,
TRUE);
Mcb = (PFFS_MCB)(ExAllocateFromPagedLookasideList(
&(FFSGlobal->FFSMcbLookasideList)));
ExReleaseResourceForThreadLite(
&FFSGlobal->LAResource,
ExGetCurrentResourceThread());
if (Mcb == NULL)
{
Mcb = (PFFS_MCB)ExAllocatePool(PagedPool, sizeof(FFS_MCB));
RtlZeroMemory(Mcb, sizeof(FFS_MCB));
SetFlag(Mcb->Flags, MCB_FROM_POOL);
}
else
{
RtlZeroMemory(Mcb, sizeof(FFS_MCB));
}
if (!Mcb)
{
return NULL;
}
Mcb->Identifier.Type = FFSMCB;
Mcb->Identifier.Size = sizeof(FFS_MCB);
if (FileName && FileName->Length)
{
Mcb->ShortName.Length = FileName->Length;
Mcb->ShortName.MaximumLength = Mcb->ShortName.Length + 2;
Mcb->ShortName.Buffer = ExAllocatePool(PagedPool, Mcb->ShortName.MaximumLength);
if (!Mcb->ShortName.Buffer)
goto errorout;
RtlZeroMemory(Mcb->ShortName.Buffer, Mcb->ShortName.MaximumLength);
RtlCopyMemory(Mcb->ShortName.Buffer, FileName->Buffer, Mcb->ShortName.Length);
}
Mcb->FileAttr = FileAttr;
ExAcquireResourceExclusiveLite(
&FFSGlobal->CountResource,
TRUE);
FFSGlobal->McbAllocated++;
ExReleaseResourceForThreadLite(
&FFSGlobal->CountResource,
ExGetCurrentResourceThread());
return Mcb;
errorout:
if (Mcb)
{
if (Mcb->ShortName.Buffer)
ExFreePool(Mcb->ShortName.Buffer);
if (FlagOn(Mcb->Flags, MCB_FROM_POOL))
{
ExFreePool(Mcb);
}
else
{
ExAcquireResourceExclusiveLite(
&FFSGlobal->LAResource,
TRUE);
ExFreeToPagedLookasideList(&(FFSGlobal->FFSMcbLookasideList), Mcb);
ExReleaseResourceForThreadLite(
&FFSGlobal->LAResource,
ExGetCurrentResourceThread());
}
}
return NULL;
}
VOID
FFSFreeVcb(
IN PFFS_VCB Vcb)
{
ASSERT(Vcb != NULL);
ASSERT((Vcb->Identifier.Type == FFSVCB) &&
(Vcb->Identifier.Size == sizeof(FFS_VCB)));
FsRtlNotifyUninitializeSync(&Vcb->NotifySync);
if (Vcb->StreamObj)
{
if (IsFlagOn(Vcb->StreamObj->Flags, FO_FILE_MODIFIED))
{
IO_STATUS_BLOCK IoStatus;
CcFlushCache(&(Vcb->SectionObject), NULL, 0, &IoStatus);
ClearFlag(Vcb->StreamObj->Flags, FO_FILE_MODIFIED);
}
if (Vcb->StreamObj->PrivateCacheMap)
FFSSyncUninitializeCacheMap(Vcb->StreamObj);
ObDereferenceObject(Vcb->StreamObj);
Vcb->StreamObj = NULL;
}
#if DBG
if (FsRtlNumberOfRunsInLargeMcb(&(Vcb->DirtyMcbs)) != 0)
{
LONGLONG DirtyVba;
LONGLONG DirtyLba;
LONGLONG DirtyLength;
int i;
for (i = 0; FsRtlGetNextLargeMcbEntry (&(Vcb->DirtyMcbs), i, &DirtyVba, &DirtyLba, &DirtyLength); i++)
{
FFSPrint((DBG_INFO, "DirtyVba = %I64xh\n", DirtyVba));
FFSPrint((DBG_INFO, "DirtyLba = %I64xh\n", DirtyLba));
FFSPrint((DBG_INFO, "DirtyLen = %I64xh\n\n", DirtyLength));
}
FFSBreakPoint();
}
#endif
FsRtlUninitializeLargeMcb(&(Vcb->DirtyMcbs));
FFSFreeMcbTree(Vcb->McbTree);
if (Vcb->ffs_super_block)
{
ExFreePool(Vcb->ffs_super_block);
Vcb->ffs_super_block = NULL;
}
ExDeleteResourceLite(&Vcb->McbResource);
ExDeleteResourceLite(&Vcb->PagingIoResource);
ExDeleteResourceLite(&Vcb->MainResource);
IoDeleteDevice(Vcb->DeviceObject);
}
BOOLEAN
FFSCheckSetBlock(
PFFS_IRP_CONTEXT IrpContext,
PFFS_VCB Vcb,
ULONG Block)
{
#if 0
ULONG Group, dwBlk, Length;
RTL_BITMAP BlockBitmap;
PVOID BitmapCache;
PBCB BitmapBcb;
LARGE_INTEGER Offset;
BOOLEAN bModified = FALSE;
//Group = (Block - FFS_FIRST_DATA_BLOCK) / BLOCKS_PER_GROUP;
dwBlk = (Block - FFS_FIRST_DATA_BLOCK) % BLOCKS_PER_GROUP;
Offset.QuadPart = (LONGLONG) Vcb->BlockSize;
Offset.QuadPart = Offset.QuadPart * Vcb->ffs_group_desc[Group].bg_block_bitmap;
if (Group == Vcb->ffs_groups - 1)
{
Length = TOTAL_BLOCKS % BLOCKS_PER_GROUP;
/* s_blocks_count is integer multiple of s_blocks_per_group */
if (Length == 0)
Length = BLOCKS_PER_GROUP;
}
else
{
Length = BLOCKS_PER_GROUP;
}
if (dwBlk >= Length)
return FALSE;
if (!CcPinRead(Vcb->StreamObj,
&Offset,
Vcb->BlockSize,
PIN_WAIT,
&BitmapBcb,
&BitmapCache))
{
FFSPrint((DBG_ERROR, "FFSDeleteBlock: PinReading error ...\n"));
return FALSE;
}
RtlInitializeBitMap(&BlockBitmap,
BitmapCache,
Length);
if (RtlCheckBit(&BlockBitmap, dwBlk) == 0)
{
FFSBreakPoint();
RtlSetBits(&BlockBitmap, dwBlk, 1);
bModified = TRUE;
}
if (bModified)
{
CcSetDirtyPinnedData(BitmapBcb, NULL);
FFSRepinBcb(IrpContext, BitmapBcb);
FFSAddMcbEntry(Vcb, Offset.QuadPart, (LONGLONG)Vcb->BlockSize);
}
{
CcUnpinData(BitmapBcb);
BitmapBcb = NULL;
BitmapCache = NULL;
RtlZeroMemory(&BlockBitmap, sizeof(RTL_BITMAP));
}
return (!bModified);
#endif
return FALSE;
}
ULONG
FFSProcessDirEntry(
IN PFFS_VCB Vcb,
IN FILE_INFORMATION_CLASS FileInformationClass,
IN ULONG in,
IN PVOID Buffer,
IN ULONG UsedLength,
IN ULONG Length,
IN ULONG FileIndex,
IN PUNICODE_STRING pName,
IN BOOLEAN Single)
{
FFSv1_INODE dinode1;
FFSv2_INODE dinode2;
PFILE_DIRECTORY_INFORMATION FDI;
PFILE_FULL_DIR_INFORMATION FFI;
PFILE_BOTH_DIR_INFORMATION FBI;
PFILE_NAMES_INFORMATION FNI;
ULONG InfoLength = 0;
ULONG NameLength = 0;
ULONG dwBytes = 0;
PAGED_CODE();
NameLength = pName->Length;
if (!in)
{
FFSPrint((DBG_ERROR, "FFSPricessDirEntry: ffs_dir_entry is empty.\n"));
return 0;
}
InfoLength = FFSGetInfoLength(FileInformationClass);
if (!InfoLength || InfoLength + NameLength - sizeof(WCHAR) > Length)
{
FFSPrint((DBG_INFO, "FFSPricessDirEntry: Buffer is not enough.\n"));
return 0;
}
if (FS_VERSION == 1)
{
if(!FFSv1LoadInode(Vcb, in, &dinode1))
{
FFSPrint((DBG_ERROR, "FFSPricessDirEntry: Loading inode %xh error.\n", in));
FFSBreakPoint();
return 0;
}
}
else
{
if(!FFSv2LoadInode(Vcb, in, &dinode2))
{
FFSPrint((DBG_ERROR, "FFSPricessDirEntry: Loading inode %xh error.\n", in));
FFSBreakPoint();
return 0;
}
}
switch(FileInformationClass)
{
case FileDirectoryInformation:
FDI = (PFILE_DIRECTORY_INFORMATION) ((PUCHAR)Buffer + UsedLength);
if (!Single)
FDI->NextEntryOffset = InfoLength + NameLength - sizeof(WCHAR);
else
FDI->NextEntryOffset = 0;
FDI->FileIndex = FileIndex;
if (FS_VERSION == 1)
{
FDI->CreationTime = FFSSysTime(dinode1.di_ctime);
FDI->LastAccessTime = FFSSysTime(dinode1.di_atime);
FDI->LastWriteTime = FFSSysTime(dinode1.di_mtime);
FDI->ChangeTime = FFSSysTime(dinode1.di_mtime);
FDI->EndOfFile.QuadPart = dinode1.di_size;
FDI->AllocationSize.QuadPart = dinode1.di_size;
FDI->FileAttributes = FILE_ATTRIBUTE_NORMAL;
if (FlagOn(Vcb->Flags, VCB_READ_ONLY) || FFSIsReadOnly(dinode1.di_mode))
{
SetFlag(FDI->FileAttributes, FILE_ATTRIBUTE_READONLY);
}
if ((dinode1.di_mode & IFMT) == IFDIR)
FDI->FileAttributes |= FILE_ATTRIBUTE_DIRECTORY;
FDI->FileNameLength = NameLength;
RtlCopyMemory(FDI->FileName, pName->Buffer, NameLength);
dwBytes = InfoLength + NameLength - sizeof(WCHAR);
break;
}
else
{
FDI->CreationTime = FFSSysTime((ULONG)dinode2.di_ctime);
FDI->LastAccessTime = FFSSysTime((ULONG)dinode2.di_atime);
FDI->LastWriteTime = FFSSysTime((ULONG)dinode2.di_mtime);
FDI->ChangeTime = FFSSysTime((ULONG)dinode2.di_mtime);
FDI->EndOfFile.QuadPart = dinode2.di_size;
FDI->AllocationSize.QuadPart = dinode2.di_size;
FDI->FileAttributes = FILE_ATTRIBUTE_NORMAL;
if (FlagOn(Vcb->Flags, VCB_READ_ONLY) || FFSIsReadOnly(dinode2.di_mode))
{
SetFlag(FDI->FileAttributes, FILE_ATTRIBUTE_READONLY);
}
if ((dinode2.di_mode & IFMT) == IFDIR)
FDI->FileAttributes |= FILE_ATTRIBUTE_DIRECTORY;
FDI->FileNameLength = NameLength;
RtlCopyMemory(FDI->FileName, pName->Buffer, NameLength);
dwBytes = InfoLength + NameLength - sizeof(WCHAR);
break;
}
case FileFullDirectoryInformation:
FFI = (PFILE_FULL_DIR_INFORMATION) ((PUCHAR)Buffer + UsedLength);
if (!Single)
FFI->NextEntryOffset = InfoLength + NameLength - sizeof(WCHAR);
else
FFI->NextEntryOffset = 0;
FFI->FileIndex = FileIndex;
if (FS_VERSION == 1)
{
FFI->CreationTime = FFSSysTime(dinode1.di_ctime);
FFI->LastAccessTime = FFSSysTime(dinode1.di_atime);
FFI->LastWriteTime = FFSSysTime(dinode1.di_mtime);
FFI->ChangeTime = FFSSysTime(dinode1.di_mtime);
FFI->EndOfFile.QuadPart = dinode1.di_size;
FFI->AllocationSize.QuadPart = dinode1.di_size;
FFI->FileAttributes = FILE_ATTRIBUTE_NORMAL;
if (IsFlagOn(Vcb->Flags, VCB_READ_ONLY) || FFSIsReadOnly(dinode1.di_mode))
{
SetFlag(FFI->FileAttributes, FILE_ATTRIBUTE_READONLY);
}
if ((dinode1.di_mode & IFMT) == IFDIR)
FFI->FileAttributes |= FILE_ATTRIBUTE_DIRECTORY;
FFI->FileNameLength = NameLength;
RtlCopyMemory(FFI->FileName, pName->Buffer, NameLength);
dwBytes = InfoLength + NameLength - sizeof(WCHAR);
break;
}
else
{
FFI->CreationTime = FFSSysTime((ULONG)dinode2.di_ctime);
FFI->LastAccessTime = FFSSysTime((ULONG)dinode2.di_atime);
FFI->LastWriteTime = FFSSysTime((ULONG)dinode2.di_mtime);
FFI->ChangeTime = FFSSysTime((ULONG)dinode2.di_mtime);
FFI->EndOfFile.QuadPart = dinode2.di_size;
FFI->AllocationSize.QuadPart = dinode2.di_size;
FFI->FileAttributes = FILE_ATTRIBUTE_NORMAL;
if (IsFlagOn(Vcb->Flags, VCB_READ_ONLY) || FFSIsReadOnly(dinode2.di_mode))
{
SetFlag(FFI->FileAttributes, FILE_ATTRIBUTE_READONLY);
}
if ((dinode2.di_mode & IFMT) == IFDIR)
FFI->FileAttributes |= FILE_ATTRIBUTE_DIRECTORY;
FFI->FileNameLength = NameLength;
RtlCopyMemory(FFI->FileName, pName->Buffer, NameLength);
dwBytes = InfoLength + NameLength - sizeof(WCHAR);
break;
}
case FileBothDirectoryInformation:
FBI = (PFILE_BOTH_DIR_INFORMATION) ((PUCHAR)Buffer + UsedLength);
if (!Single)
FBI->NextEntryOffset = InfoLength + NameLength - sizeof(WCHAR);
else
FBI->NextEntryOffset = 0;
if (FS_VERSION == 1)
{
FBI->CreationTime = FFSSysTime(dinode1.di_ctime);
FBI->LastAccessTime = FFSSysTime(dinode1.di_atime);
FBI->LastWriteTime = FFSSysTime(dinode1.di_mtime);
FBI->ChangeTime = FFSSysTime(dinode1.di_mtime);
FBI->FileIndex = FileIndex;
FBI->EndOfFile.QuadPart = dinode1.di_size;
FBI->AllocationSize.QuadPart = dinode1.di_size;
FBI->FileAttributes = FILE_ATTRIBUTE_NORMAL;
if (FlagOn(Vcb->Flags, VCB_READ_ONLY) || FFSIsReadOnly(dinode1.di_mode))
{
SetFlag(FBI->FileAttributes, FILE_ATTRIBUTE_READONLY);
}
if ((dinode1.di_mode & IFMT) == IFDIR)
FBI->FileAttributes |= FILE_ATTRIBUTE_DIRECTORY;
FBI->FileNameLength = NameLength;
RtlCopyMemory(FBI->FileName, pName->Buffer, NameLength);
dwBytes = InfoLength + NameLength - sizeof(WCHAR);
break;
}
else
{
FBI->CreationTime = FFSSysTime((ULONG)dinode2.di_ctime);
FBI->LastAccessTime = FFSSysTime((ULONG)dinode2.di_atime);
FBI->LastWriteTime = FFSSysTime((ULONG)dinode2.di_mtime);
FBI->ChangeTime = FFSSysTime((ULONG)dinode2.di_mtime);
FBI->FileIndex = FileIndex;
FBI->EndOfFile.QuadPart = dinode2.di_size;
FBI->AllocationSize.QuadPart = dinode2.di_size;
FBI->FileAttributes = FILE_ATTRIBUTE_NORMAL;
if (FlagOn(Vcb->Flags, VCB_READ_ONLY) || FFSIsReadOnly(dinode2.di_mode))
{
SetFlag(FBI->FileAttributes, FILE_ATTRIBUTE_READONLY);
}
if ((dinode2.di_mode & IFMT) == IFDIR)
FBI->FileAttributes |= FILE_ATTRIBUTE_DIRECTORY;
FBI->FileNameLength = NameLength;
RtlCopyMemory(FBI->FileName, pName->Buffer, NameLength);
dwBytes = InfoLength + NameLength - sizeof(WCHAR);
break;
}
case FileNamesInformation:
FNI = (PFILE_NAMES_INFORMATION) ((PUCHAR)Buffer + UsedLength);
if (!Single)
FNI->NextEntryOffset = InfoLength + NameLength - sizeof(WCHAR);
else
FNI->NextEntryOffset = 0;
FNI->FileNameLength = NameLength;
RtlCopyMemory(FNI->FileName, pName->Buffer, NameLength);
dwBytes = InfoLength + NameLength - sizeof(WCHAR);
break;
default:
break;
}
return dwBytes;
}
NTSTATUS
FFSLoadDiskLabel(
PDEVICE_OBJECT DeviceObject,
IN PFFS_VCB Vcb)
{
NTSTATUS Status;
PFFS_SUPER_BLOCK FFSSb;
PDISKLABEL Disklabel;
int i;
int RootFS_VERSION;
ULONGLONG StartOffset = 0;
ULONGLONG FSOffset = 0;
ULONGLONG FSRootOffset = 0;
PAGED_CODE();
Disklabel = (PDISKLABEL)ExAllocatePoolWithTag(PagedPool, sizeof(DISKLABEL), FFS_POOL_TAG);
FFSReadDisk(Vcb, (LABELSECTOR * SECTOR_SIZE + LABELOFFSET), sizeof(DISKLABEL), (PVOID)Disklabel, FALSE);
if (Disklabel->d_magic == DISKMAGIC)
{
KdPrint(("FFSLoadDiskLabel() Disklabel magic ok\n"));
Status = STATUS_SUCCESS;
}
else
{
KdPrint(("FFSLoadDiskLabel() No BSD disklabel found, trying to find BSD file system on \"normal\" partition.\n"));
if ((FFSSb = FFSLoadSuper(Vcb, FALSE, FSOffset + SBLOCK_UFS1)) &&
(FFSSb->fs_magic == FS_UFS1_MAGIC))
{
FFSPrint((DBG_VITAL, "FFSLoadDiskLabel() \"normal\" partition of FFSv1 file system is found.\n"));
/*
if ((FFSSb->fs_fsmnt[0] == '/') && (FFSSb->fs_fsmnt[1] == '\0'))
{
FFSGlobal->RootPartition = i;
FSRootOffset = FSOffset;
RootFS_VERSION = 1;
}
*/
FS_VERSION = 1;
Vcb->FSOffset[0] = 0;
Vcb->PartitionNumber = 0;
Vcb->ffs_super_block = FFSSb;
Status = STATUS_SUCCESS;
return Status;
}
else if ((FFSSb = FFSLoadSuper(Vcb, FALSE, FSOffset + SBLOCK_UFS2)) &&
(FFSSb->fs_magic == FS_UFS2_MAGIC))
{
FFSPrint((DBG_VITAL, "FFSLoadDiskLabel() \"normal\" partition of FFSv2 file system is found.\n"));
/*
if ((FFSSb->fs_fsmnt[0] == '/') && (FFSSb->fs_fsmnt[1] == '\0'))
{
FFSGlobal->RootPartition = i;
FSRootOffset = FSOffset;
RootFS_VERSION = 2;
}
*/
FS_VERSION = 2;
Vcb->FSOffset[0] = 0;
Vcb->PartitionNumber = 0;
Vcb->ffs_super_block = FFSSb;
Status = STATUS_SUCCESS;
return Status;
}
else
{
KdPrint(("FFSLoadDiskLabel() No BSD file system was found on the \"normal\" partition.\n"));
Status = STATUS_UNRECOGNIZED_VOLUME;
return Status;
}
}
Status = FFSGetPartition(DeviceObject, &StartOffset);
if (!NT_SUCCESS(Status))
{
KdPrint(("FFSLoadDiskLabel() Slice info failed, Status %u\n", Status));
return Status;
}
Vcb->PartitionNumber = FFSGlobal->PartitionNumber;
KdPrint(("FFSLoadDiskLabel() Selected BSD Label : %d, StartOffset : %x\n", Vcb->PartitionNumber, StartOffset));
for (i = 0; i < MAXPARTITIONS; i++)
{
if (Disklabel->d_partitions[i].p_fstype == FS_BSDFFS)
{
/* Important */
FSOffset = Disklabel->d_partitions[i].p_offset;
FSOffset = FSOffset * SECTOR_SIZE;
//FSOffset = FSOffset - StartOffset;
Vcb->FSOffset[i] = FSOffset;
/* Important */
KdPrint(("FFSLoadDiskLabel() Label %d, FS_BSDFFS, %x\n", i, Vcb->FSOffset[i]));
if ((FFSSb = FFSLoadSuper(Vcb, FALSE, FSOffset + SBLOCK_UFS1)) &&
(FFSSb->fs_magic == FS_UFS1_MAGIC))
{
FFSPrint((DBG_VITAL, "FFSLoadDiskLabel() Label %d of FFSv1 file system is found.\n", i));
if ((FFSSb->fs_fsmnt[0] == '/') && (FFSSb->fs_fsmnt[1] == '\0'))
{
Vcb->RootPartition = i;
FSRootOffset = FSOffset;
RootFS_VERSION = 1;
}
FS_VERSION = 1;
if (i == (int)Vcb->PartitionNumber)
{
Vcb->ffs_super_block = FFSSb;
}
Status = STATUS_SUCCESS;
}
else if ((FFSSb = FFSLoadSuper(Vcb, FALSE, FSOffset + SBLOCK_UFS2)) &&
(FFSSb->fs_magic == FS_UFS2_MAGIC))
{
FFSPrint((DBG_VITAL, "FFSLoadDiskLabel() Label %d of FFSv2 file system is found.\n", i));
if ((FFSSb->fs_fsmnt[0] == '/') && (FFSSb->fs_fsmnt[1] == '\0'))
{
Vcb->RootPartition = i;
FSRootOffset = FSOffset;
RootFS_VERSION = 2;
}
FS_VERSION = 2;
if (i == (int)Vcb->PartitionNumber)
{
Vcb->ffs_super_block = FFSSb;
}
Status = STATUS_SUCCESS;
}
}
#if 0
else if (i == (int)FFSGlobal->PartitionNumber)
{
/* 선택된 BSD 파티션이 디스크에 없을 경우 Root 파티션으로 대체 */
if (RootFS_VERSION == 1)
{
FFSSb = FFSLoadSuper(Vcb, FALSE, FSRootOffset + SBLOCK_UFS1);
Vcb->ffs_super_block = FFSSb;
FFSGlobal->PartitionNumber = FFSGlobal->RootPartition;
}
else
{
FFSSb = FFSLoadSuper(Vcb, FALSE, FSRootOffset + SBLOCK_UFS2);
Vcb->ffs_super_block = FFSSb;
FFSGlobal->PartitionNumber = FFSGlobal->RootPartition;
}
}
#endif
}
if (Vcb->ffs_super_block == NULL)
Status = STATUS_UNRECOGNIZED_VOLUME;
return Status;
}
__drv_mustHoldCriticalRegion
NTSTATUS
FFSUserFsRequest(
IN PFFS_IRP_CONTEXT IrpContext)
{
PIRP Irp;
PIO_STACK_LOCATION IoStackLocation;
ULONG FsControlCode;
NTSTATUS Status;
PAGED_CODE();
ASSERT(IrpContext);
ASSERT((IrpContext->Identifier.Type == FFSICX) &&
(IrpContext->Identifier.Size == sizeof(FFS_IRP_CONTEXT)));
Irp = IrpContext->Irp;
IoStackLocation = IoGetCurrentIrpStackLocation(Irp);
#if !defined(_GNU_NTIFS_) || defined(__REACTOS__)
FsControlCode =
IoStackLocation->Parameters.FileSystemControl.FsControlCode;
#else
FsControlCode = ((PEXTENDED_IO_STACK_LOCATION)
IoStackLocation)->Parameters.FileSystemControl.FsControlCode;
#endif
switch (FsControlCode)
{
case FSCTL_LOCK_VOLUME:
Status = FFSLockVolume(IrpContext);
break;
case FSCTL_UNLOCK_VOLUME:
Status = FFSUnlockVolume(IrpContext);
break;
case FSCTL_DISMOUNT_VOLUME:
Status = FFSDismountVolume(IrpContext);
break;
case FSCTL_IS_VOLUME_MOUNTED:
Status = FFSIsVolumeMounted(IrpContext);
break;
case FSCTL_INVALIDATE_VOLUMES:
Status = FFSInvalidateVolumes(IrpContext);
break;
#if (_WIN32_WINNT >= 0x0500)
case FSCTL_ALLOW_EXTENDED_DASD_IO:
Status = FFSAllowExtendedDasdIo(IrpContext);
break;
#endif //(_WIN32_WINNT >= 0x0500)
default:
FFSPrint((DBG_ERROR, "FFSUserFsRequest: Invalid User Request: %xh.\n", FsControlCode));
Status = STATUS_INVALID_DEVICE_REQUEST;
FFSCompleteIrpContext(IrpContext, Status);
}
return Status;
}
__drv_mustHoldCriticalRegion
NTSTATUS
FFSCleanup(
IN PFFS_IRP_CONTEXT IrpContext)
{
PDEVICE_OBJECT DeviceObject;
NTSTATUS Status = STATUS_SUCCESS;
PFFS_VCB Vcb = 0;
BOOLEAN VcbResourceAcquired = FALSE;
PFILE_OBJECT FileObject;
PFFS_FCB Fcb = 0;
BOOLEAN FcbResourceAcquired = FALSE;
BOOLEAN FcbPagingIoAcquired = FALSE;
PFFS_CCB Ccb;
PIRP Irp;
PAGED_CODE();
_SEH2_TRY
{
ASSERT(IrpContext != NULL);
ASSERT((IrpContext->Identifier.Type == FFSICX) &&
(IrpContext->Identifier.Size == sizeof(FFS_IRP_CONTEXT)));
DeviceObject = IrpContext->DeviceObject;
if (DeviceObject == FFSGlobal->DeviceObject)
{
Status = STATUS_SUCCESS;
_SEH2_LEAVE;
}
Vcb = (PFFS_VCB)DeviceObject->DeviceExtension;
ASSERT(Vcb != NULL);
ASSERT((Vcb->Identifier.Type == FFSVCB) &&
(Vcb->Identifier.Size == sizeof(FFS_VCB)));
if (!IsFlagOn(Vcb->Flags, VCB_INITIALIZED))
{
Status = STATUS_SUCCESS;
_SEH2_LEAVE;
}
#ifdef _MSC_VER
#pragma prefast( suppress: 28137, "by design" )
#endif
if (!ExAcquireResourceExclusiveLite(
&Vcb->MainResource,
IrpContext->IsSynchronous))
{
Status = STATUS_PENDING;
_SEH2_LEAVE;
}
VcbResourceAcquired = TRUE;
FileObject = IrpContext->FileObject;
Fcb = (PFFS_FCB)FileObject->FsContext;
if (!Fcb)
{
Status = STATUS_SUCCESS;
_SEH2_LEAVE;
}
if (Fcb->Identifier.Type == FFSVCB)
{
if (IsFlagOn(Vcb->Flags, VCB_VOLUME_LOCKED) &&
(Vcb->LockFile == FileObject))
{
ClearFlag(Vcb->Flags, VCB_VOLUME_LOCKED);
Vcb->LockFile = NULL;
FFSClearVpbFlag(Vcb->Vpb, VPB_LOCKED);
}
Vcb->OpenHandleCount--;
if (!Vcb->OpenHandleCount)
{
IoRemoveShareAccess(FileObject, &Vcb->ShareAccess);
}
Status = STATUS_SUCCESS;
_SEH2_LEAVE;
}
ASSERT((Fcb->Identifier.Type == FFSFCB) &&
(Fcb->Identifier.Size == sizeof(FFS_FCB)));
/*
if (!IsFlagOn(Vcb->Flags, VCB_READ_ONLY) &&
!IsFlagOn(Fcb->Flags, FCB_PAGE_FILE))
*/
{
#ifdef _MSC_VER
#pragma prefast( suppress: 28137, "by design" )
#endif
if (!ExAcquireResourceExclusiveLite(
&Fcb->MainResource,
IrpContext->IsSynchronous))
{
Status = STATUS_PENDING;
_SEH2_LEAVE;
}
FcbResourceAcquired = TRUE;
}
Ccb = (PFFS_CCB)FileObject->FsContext2;
if (!Ccb)
{
Status = STATUS_SUCCESS;
_SEH2_LEAVE;
}
if (IsFlagOn(FileObject->Flags, FO_CLEANUP_COMPLETE))
{
if (IsFlagOn(FileObject->Flags, FO_FILE_MODIFIED) &&
IsFlagOn(Vcb->Flags, VCB_FLOPPY_DISK) &&
!IsFlagOn(Vcb->Flags, VCB_WRITE_PROTECTED))
{
Status = FFSFlushFile(Fcb);
}
_SEH2_LEAVE;
}
ASSERT((Ccb->Identifier.Type == FFSCCB) &&
(Ccb->Identifier.Size == sizeof(FFS_CCB)));
Irp = IrpContext->Irp;
Fcb->OpenHandleCount--;
if (!IsFlagOn(FileObject->Flags, FO_CACHE_SUPPORTED))
{
Fcb->NonCachedOpenCount--;
}
Vcb->OpenFileHandleCount--;
if (IsFlagOn(Fcb->Flags, FCB_DELETE_ON_CLOSE))
{
SetFlag(Fcb->Flags, FCB_DELETE_PENDING);
if (IsDirectory(Fcb))
{
FsRtlNotifyFullChangeDirectory(
Vcb->NotifySync,
&Vcb->NotifyList,
Fcb,
NULL,
FALSE,
FALSE,
0,
NULL,
NULL,
NULL);
}
}
if (IsDirectory(Fcb))
{
FsRtlNotifyCleanup(
Vcb->NotifySync,
&Vcb->NotifyList,
Ccb);
}
else
{
//
// Drop any byte range locks this process may have on the file.
//
FsRtlFastUnlockAll(
&Fcb->FileLockAnchor,
FileObject,
IoGetRequestorProcess(Irp),
NULL);
//
// If there are no byte range locks owned by other processes on the
// file the fast I/O read/write functions doesn't have to check for
// locks so we set IsFastIoPossible to FastIoIsPossible again.
//
if (!FsRtlGetNextFileLock(&Fcb->FileLockAnchor, TRUE))
{
if (Fcb->Header.IsFastIoPossible != FastIoIsPossible)
{
FFSPrint((
DBG_INFO, ": %-16.16s %-31s %s\n",
FFSGetCurrentProcessName(),
"FastIoIsPossible",
Fcb->AnsiFileName.Buffer));
Fcb->Header.IsFastIoPossible = FastIoIsPossible;
}
}
}
if (IsFlagOn(FileObject->Flags, FO_CACHE_SUPPORTED) &&
(Fcb->NonCachedOpenCount != 0) &&
(Fcb->NonCachedOpenCount == Fcb->ReferenceCount) &&
(Fcb->SectionObject.DataSectionObject != NULL))
{
if(!IsFlagOn(Vcb->Flags, VCB_READ_ONLY) &&
!IsFlagOn(Vcb->Flags, VCB_WRITE_PROTECTED))
{
CcFlushCache(&Fcb->SectionObject, NULL, 0, NULL);
}
ExAcquireResourceExclusiveLite(&(Fcb->PagingIoResource), TRUE);
ExReleaseResourceLite(&(Fcb->PagingIoResource));
CcPurgeCacheSection(&Fcb->SectionObject,
NULL,
0,
FALSE);
}
#if !FFS_READ_ONLY
if (Fcb->OpenHandleCount == 0)
{
if (IsFlagOn(Fcb->Flags, FCB_DELETE_PENDING))
{
BOOLEAN bDeleted = FALSE;
//
// Have to delete this file...
//
#ifdef _MSC_VER
#pragma prefast( suppress: 28137, "by design" )
#endif
if (!ExAcquireResourceExclusiveLite(
&Fcb->PagingIoResource,
IrpContext->IsSynchronous))
{
Status = STATUS_PENDING;
_SEH2_LEAVE;
}
FcbPagingIoAcquired = TRUE;
bDeleted = FFSDeleteFile(IrpContext, Vcb, Fcb);
if (bDeleted)
{
if (IsDirectory(Fcb))
{
FFSNotifyReportChange(IrpContext, Vcb, Fcb,
FILE_NOTIFY_CHANGE_DIR_NAME,
FILE_ACTION_REMOVED);
}
else
{
FFSNotifyReportChange(IrpContext, Vcb, Fcb,
FILE_NOTIFY_CHANGE_FILE_NAME,
FILE_ACTION_REMOVED);
}
}
if (FcbPagingIoAcquired)
{
ExReleaseResourceForThreadLite(
&Fcb->PagingIoResource,
ExGetCurrentResourceThread());
FcbPagingIoAcquired = FALSE;
}
/*
if (bDeleted)
{
FFSPurgeFile(Fcb, FALSE);
}
*/
}
}
#endif // !FFS_READ_ONLY
if (!IsDirectory(Fcb) && FileObject->PrivateCacheMap)
{
FFSPrint((DBG_INFO, "FFSCleanup: CcUninitializeCacheMap is called for %s.\n",
Fcb->AnsiFileName.Buffer));
CcUninitializeCacheMap(
FileObject,
(PLARGE_INTEGER)(&(Fcb->Header.FileSize)),
NULL);
}
if (!Fcb->OpenHandleCount)
{
IoRemoveShareAccess(FileObject, &Fcb->ShareAccess);
}
FFSPrint((DBG_INFO, "FFSCleanup: OpenCount: %u ReferCount: %u %s\n",
Fcb->OpenHandleCount, Fcb->ReferenceCount, Fcb->AnsiFileName.Buffer));
Status = STATUS_SUCCESS;
if (FileObject)
{
SetFlag(FileObject->Flags, FO_CLEANUP_COMPLETE);
}
}
_SEH2_FINALLY
{
if (FcbPagingIoAcquired)
{
ExReleaseResourceForThreadLite(
&Fcb->PagingIoResource,
ExGetCurrentResourceThread());
}
if (FcbResourceAcquired)
{
ExReleaseResourceForThreadLite(
&Fcb->MainResource,
ExGetCurrentResourceThread());
}
if (VcbResourceAcquired)
{
ExReleaseResourceForThreadLite(
&Vcb->MainResource,
ExGetCurrentResourceThread());
}
if (!IrpContext->ExceptionInProgress)
{
if (Status == STATUS_PENDING)
{
FFSQueueRequest(IrpContext);
}
else
{
IrpContext->Irp->IoStatus.Status = Status;
FFSCompleteIrpContext(IrpContext, Status);
}
}
} _SEH2_END;
return Status;
}
NTSTATUS
FFSv1WriteInode(
IN PFFS_IRP_CONTEXT IrpContext,
IN PFFS_VCB Vcb,
IN PFFSv1_INODE dinode1,
IN ULONGLONG offset,
IN PVOID Buffer,
IN ULONG size,
IN BOOLEAN bWriteToDisk,
OUT PULONG dwRet)
{
PFFS_BDL ffs_bdl = NULL;
ULONG blocks, i;
NTSTATUS Status = STATUS_UNSUCCESSFUL;
ULONG Totalblocks;
LONGLONG AllocSize;
if (dwRet)
{
*dwRet = 0;
}
Totalblocks = (dinode1->di_blocks);
AllocSize = ((LONGLONG)(FFSDataBlocks(Vcb, Totalblocks)) << BLOCK_BITS);
if ((LONGLONG)offset >= AllocSize)
{
FFSPrint((DBG_ERROR, "FFSv1WriteInode: beyond the file range.\n"));
return STATUS_SUCCESS;
}
if ((LONGLONG)offset + size > AllocSize)
{
size = (ULONG)(AllocSize - offset);
}
blocks = FFSv1BuildBDL(IrpContext, Vcb, dinode1, offset, size, &ffs_bdl);
if (blocks <= 0)
{
return STATUS_SUCCESS;
}
#if DBG
{
ULONG dwTotal = 0;
FFSPrint((DBG_INFO, "FFSv1WriteInode: BDLCount = %xh Size=%xh Off=%xh\n",
blocks, size, offset));
for(i = 0; i < blocks; i++)
{
FFSPrint((DBG_INFO, "FFSv1WriteInode: Lba=%I64xh Len=%xh Off=%xh\n",
ffs_bdl[i].Lba, ffs_bdl[i].Length, ffs_bdl[i].Offset));
dwTotal += ffs_bdl[i].Length;
}
if (dwTotal != size)
{
FFSBreakPoint();
}
FFSPrint((DBG_INFO, "FFSv1WriteInode: Total = %xh (WriteToDisk=%x)\n",
dwTotal, bWriteToDisk));
}
#endif
if (bWriteToDisk)
{
#if 0
for(i = 0; i < blocks; i++)
{
{
CcFlushCache(&(Vcb->SectionObject),
(PLARGE_INTEGER)&(ffs_bdl[i].Lba),
ffs_bdl[i].Length,
NULL);
if (Vcb->SectionObject.DataSectionObject != NULL)
{
ExAcquireSharedStarveExclusive(&Vcb->PagingIoResource, TRUE);
ExReleaseResource(&Vcb->PagingIoResource);
CcPurgeCacheSection(&(Vcb->SectionObject),
(PLARGE_INTEGER)&(ffs_bdl[i].Lba),
ffs_bdl[i].Length,
FALSE);
}
}
}
#endif
// assume offset is aligned.
Status = FFSReadWriteBlocks(IrpContext, Vcb, ffs_bdl, size, blocks, FALSE);
}
else
{
for(i = 0; i < blocks; i++)
{
if(!FFSSaveBuffer(IrpContext, Vcb, ffs_bdl[i].Lba, ffs_bdl[i].Length, (PVOID)((PUCHAR)Buffer + ffs_bdl[i].Offset)))
goto errorout;
}
if (IsFlagOn(Vcb->Flags, VCB_FLOPPY_DISK))
{
FFSPrint((DBG_USER, "FFSv1WriteInode is starting FlushingDpc...\n"));
FFSStartFloppyFlushDpc(Vcb, NULL, NULL);
}
Status = STATUS_SUCCESS;
}
errorout:
if (ffs_bdl)
ExFreePool(ffs_bdl);
if (NT_SUCCESS(Status))
{
if (dwRet) *dwRet = size;
}
return Status;
}
__drv_mustHoldCriticalRegion
NTSTATUS
FFSVerifyVolume(
IN PFFS_IRP_CONTEXT IrpContext)
{
PDEVICE_OBJECT DeviceObject;
NTSTATUS Status = STATUS_UNSUCCESSFUL;
PFFS_SUPER_BLOCK FFSSb = NULL;
PFFS_VCB Vcb = 0;
BOOLEAN VcbResourceAcquired = FALSE;
BOOLEAN GlobalResourceAcquired = FALSE;
PIRP Irp;
PIO_STACK_LOCATION IoStackLocation;
ULONG ChangeCount;
ULONG dwReturn;
PAGED_CODE();
_SEH2_TRY
{
ASSERT(IrpContext != NULL);
ASSERT((IrpContext->Identifier.Type == FFSICX) &&
(IrpContext->Identifier.Size == sizeof(FFS_IRP_CONTEXT)));
DeviceObject = IrpContext->DeviceObject;
//
// This request is not allowed on the main device object
//
if (DeviceObject == FFSGlobal->DeviceObject)
{
Status = STATUS_INVALID_DEVICE_REQUEST;
_SEH2_LEAVE;
}
ExAcquireResourceExclusiveLite(
&FFSGlobal->Resource,
TRUE);
GlobalResourceAcquired = TRUE;
Vcb = (PFFS_VCB)DeviceObject->DeviceExtension;
ASSERT(Vcb != NULL);
ASSERT((Vcb->Identifier.Type == FFSVCB) &&
(Vcb->Identifier.Size == sizeof(FFS_VCB)));
ExAcquireResourceExclusiveLite(
&Vcb->MainResource,
TRUE);
VcbResourceAcquired = TRUE;
if (!FlagOn(Vcb->TargetDeviceObject->Flags, DO_VERIFY_VOLUME))
{
Status = STATUS_SUCCESS;
_SEH2_LEAVE;
}
if (!IsMounted(Vcb))
{
Status = STATUS_WRONG_VOLUME;
_SEH2_LEAVE;
}
dwReturn = sizeof(ULONG);
Status = FFSDiskIoControl(
Vcb->TargetDeviceObject,
IOCTL_DISK_CHECK_VERIFY,
NULL,
0,
&ChangeCount,
&dwReturn);
if (ChangeCount != Vcb->ChangeCount)
{
Status = STATUS_WRONG_VOLUME;
_SEH2_LEAVE;
}
Irp = IrpContext->Irp;
IoStackLocation = IoGetCurrentIrpStackLocation(Irp);
if (((((FFSSb = FFSLoadSuper(Vcb, TRUE, SBLOCK_UFS1)) != NULL) && (FFSSb->fs_magic == FS_UFS1_MAGIC)) ||
(((FFSSb = FFSLoadSuper(Vcb, TRUE, SBLOCK_UFS2)) != NULL) && (FFSSb->fs_magic == FS_UFS2_MAGIC))) &&
(memcmp(FFSSb->fs_id, SUPER_BLOCK->fs_id, 8) == 0) &&
(memcmp(FFSSb->fs_volname, SUPER_BLOCK->fs_volname, 16) == 0))
{
ClearFlag(Vcb->TargetDeviceObject->Flags, DO_VERIFY_VOLUME);
if (FFSIsMediaWriteProtected(IrpContext, Vcb->TargetDeviceObject))
{
SetFlag(Vcb->Flags, VCB_WRITE_PROTECTED);
}
else
{
ClearFlag(Vcb->Flags, VCB_WRITE_PROTECTED);
}
FFSPrint((DBG_INFO, "FFSVerifyVolume: Volume verify succeeded.\n"));
Status = STATUS_SUCCESS;
}
else
{
Status = STATUS_WRONG_VOLUME;
FFSPurgeVolume(Vcb, FALSE);
SetFlag(Vcb->Flags, VCB_DISMOUNT_PENDING);
ClearFlag(Vcb->TargetDeviceObject->Flags, DO_VERIFY_VOLUME);
FFSPrint((DBG_INFO, "FFSVerifyVolume: Volume verify failed.\n"));
}
}
_SEH2_FINALLY
{
if (FFSSb)
ExFreePool(FFSSb);
if (VcbResourceAcquired)
{
ExReleaseResourceForThreadLite(
&Vcb->MainResource,
ExGetCurrentResourceThread());
}
if (GlobalResourceAcquired)
{
ExReleaseResourceForThreadLite(
&FFSGlobal->Resource,
ExGetCurrentResourceThread());
}
if (!IrpContext->ExceptionInProgress)
{
FFSCompleteIrpContext(IrpContext, Status);
}
} _SEH2_END;
return Status;
}
__drv_mustHoldCriticalRegion
NTSTATUS
FFSDismountVolume(
IN PFFS_IRP_CONTEXT IrpContext)
{
PDEVICE_OBJECT DeviceObject;
NTSTATUS Status = STATUS_UNSUCCESSFUL;
PFFS_VCB Vcb = 0;
BOOLEAN VcbResourceAcquired = FALSE;
PAGED_CODE();
_SEH2_TRY
{
ASSERT(IrpContext != NULL);
ASSERT((IrpContext->Identifier.Type == FFSICX) &&
(IrpContext->Identifier.Size == sizeof(FFS_IRP_CONTEXT)));
DeviceObject = IrpContext->DeviceObject;
//
// This request is not allowed on the main device object
//
if (DeviceObject == FFSGlobal->DeviceObject)
{
Status = STATUS_INVALID_DEVICE_REQUEST;
_SEH2_LEAVE;
}
Vcb = (PFFS_VCB)DeviceObject->DeviceExtension;
ASSERT(Vcb != NULL);
ASSERT((Vcb->Identifier.Type == FFSVCB) &&
(Vcb->Identifier.Size == sizeof(FFS_VCB)));
ASSERT(IsMounted(Vcb));
ExAcquireResourceExclusiveLite(
&Vcb->MainResource,
TRUE);
VcbResourceAcquired = TRUE;
if (IsFlagOn(Vcb->Flags, VCB_DISMOUNT_PENDING))
{
Status = STATUS_VOLUME_DISMOUNTED;
_SEH2_LEAVE;
}
/*
if (!FlagOn(Vcb->Flags, VCB_VOLUME_LOCKED))
{
FFSPrint((DBG_ERROR, "FFSDismount: Volume is not locked.\n"));
Status = STATUS_ACCESS_DENIED;
_SEH2_LEAVE;
}
*/
FFSFlushFiles(Vcb, FALSE);
FFSFlushVolume(Vcb, FALSE);
FFSPurgeVolume(Vcb, TRUE);
ExReleaseResourceForThreadLite(
&Vcb->MainResource,
ExGetCurrentResourceThread());
VcbResourceAcquired = FALSE;
FFSCheckDismount(IrpContext, Vcb, TRUE);
FFSPrint((DBG_INFO, "FFSDismount: Volume dismount pending.\n"));
Status = STATUS_SUCCESS;
}
_SEH2_FINALLY
{
if (VcbResourceAcquired)
{
ExReleaseResourceForThreadLite(
&Vcb->MainResource,
ExGetCurrentResourceThread());
}
if (!IrpContext->ExceptionInProgress)
{
FFSCompleteIrpContext(IrpContext, Status);
}
} _SEH2_END;
return Status;
}
NTSTATUS
FFSWriteVolume(
IN PFFS_IRP_CONTEXT IrpContext)
{
NTSTATUS Status = STATUS_UNSUCCESSFUL;
PFFS_VCB Vcb = NULL;
PFFS_CCB Ccb = NULL;
PFFS_FCBVCB FcbOrVcb = NULL;
PFILE_OBJECT FileObject = NULL;
PDEVICE_OBJECT DeviceObject = NULL;
PIRP Irp = NULL;
PIO_STACK_LOCATION IoStackLocation = NULL;
ULONG Length;
LARGE_INTEGER ByteOffset;
BOOLEAN PagingIo;
BOOLEAN Nocache;
BOOLEAN SynchronousIo;
BOOLEAN MainResourceAcquired = FALSE;
BOOLEAN PagingIoResourceAcquired = FALSE;
BOOLEAN bDeferred = FALSE;
PUCHAR Buffer = NULL;
__try
{
ASSERT(IrpContext);
ASSERT((IrpContext->Identifier.Type == FFSICX) &&
(IrpContext->Identifier.Size == sizeof(FFS_IRP_CONTEXT)));
DeviceObject = IrpContext->DeviceObject;
Vcb = (PFFS_VCB)DeviceObject->DeviceExtension;
ASSERT(Vcb != NULL);
ASSERT((Vcb->Identifier.Type == FFSVCB) &&
(Vcb->Identifier.Size == sizeof(FFS_VCB)));
FileObject = IrpContext->FileObject;
FcbOrVcb = (PFFS_FCBVCB)FileObject->FsContext;
ASSERT(FcbOrVcb);
if (!(FcbOrVcb->Identifier.Type == FFSVCB && (PVOID)FcbOrVcb == (PVOID)Vcb))
{
Status = STATUS_INVALID_DEVICE_REQUEST;
__leave;
}
Ccb = (PFFS_CCB)FileObject->FsContext2;
Irp = IrpContext->Irp;
IoStackLocation = IoGetCurrentIrpStackLocation(Irp);
Length = IoStackLocation->Parameters.Write.Length;
ByteOffset = IoStackLocation->Parameters.Write.ByteOffset;
PagingIo = (Irp->Flags & IRP_PAGING_IO ? TRUE : FALSE);
Nocache = (Irp->Flags & IRP_NOCACHE ? TRUE : FALSE);
SynchronousIo = (FileObject->Flags & FO_SYNCHRONOUS_IO ? TRUE : FALSE);
FFSPrint((DBG_INFO, "FFSWriteVolume: Off=%I64xh Len=%xh Paging=%xh Nocache=%xh\n",
ByteOffset.QuadPart, Length, PagingIo, Nocache));
if (Length == 0)
{
Irp->IoStatus.Information = 0;
Status = STATUS_SUCCESS;
__leave;
}
// For the case of "Direct Access Storage Device", we
// need flush/purge the cache
if (Ccb != NULL)
{
ExAcquireResourceExclusive(&Vcb->MainResource, TRUE);
MainResourceAcquired = TRUE;
Status = FFSPurgeVolume(Vcb, TRUE);
ExReleaseResource(&Vcb->MainResource);
MainResourceAcquired = FALSE;
if(!IsFlagOn(Ccb->Flags, CCB_ALLOW_EXTENDED_DASD_IO))
{
if (ByteOffset.QuadPart + Length > Vcb->Header.FileSize.QuadPart)
{
Length = (ULONG)(Vcb->Header.FileSize.QuadPart - ByteOffset.QuadPart);
}
}
{
FFS_BDL BlockArray;
if ((ByteOffset.LowPart & (SECTOR_SIZE - 1)) ||
(Length & (SECTOR_SIZE - 1)))
{
Status = STATUS_INVALID_PARAMETER;
__leave;
}
Status = FFSLockUserBuffer(
IrpContext->Irp,
Length,
IoReadAccess);
if (!NT_SUCCESS(Status))
{
__leave;
}
BlockArray.Irp = NULL;
BlockArray.Lba = ByteOffset.QuadPart;;
BlockArray.Offset = 0;
BlockArray.Length = Length;
Status = FFSReadWriteBlocks(IrpContext,
Vcb,
&BlockArray,
Length,
1,
FALSE);
Irp = IrpContext->Irp;
__leave;
}
}
if (Nocache &&
(ByteOffset.LowPart & (SECTOR_SIZE - 1) ||
Length & (SECTOR_SIZE - 1)))
{
Status = STATUS_INVALID_PARAMETER;
__leave;
}
if (FlagOn(IrpContext->MinorFunction, IRP_MN_DPC))
{
ClearFlag(IrpContext->MinorFunction, IRP_MN_DPC);
Status = STATUS_PENDING;
__leave;
}
if (ByteOffset.QuadPart >=
Vcb->PartitionInformation.PartitionLength.QuadPart)
{
Irp->IoStatus.Information = 0;
Status = STATUS_END_OF_FILE;
__leave;
}
#if FALSE
if (!Nocache)
{
BOOLEAN bAgain = IsFlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_DEFERRED);
BOOLEAN bWait = IsFlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_WAIT);
BOOLEAN bQueue = IsFlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_REQUEUED);
if (!CcCanIWrite(
FileObject,
Length,
(bWait && bQueue),
bAgain))
{
SetFlag(IrpContext->Flags, IRP_CONTEXT_FLAG_DEFERRED);
CcDeferWrite(FileObject,
(PCC_POST_DEFERRED_WRITE)FFSDeferWrite,
IrpContext,
Irp,
Length,
bAgain);
bDeferred = TRUE;
FFSBreakPoint();
Status = STATUS_PENDING;
__leave;
}
}
#endif
if (Nocache && !PagingIo && (Vcb->SectionObject.DataSectionObject != NULL))
{
ExAcquireResourceExclusive(&Vcb->MainResource, TRUE);
MainResourceAcquired = TRUE;
ExAcquireSharedStarveExclusive(&Vcb->PagingIoResource, TRUE);
ExReleaseResource(&Vcb->PagingIoResource);
CcFlushCache(&(Vcb->SectionObject),
&ByteOffset,
Length,
&(Irp->IoStatus));
if (!NT_SUCCESS(Irp->IoStatus.Status))
{
Status = Irp->IoStatus.Status;
__leave;
}
ExAcquireSharedStarveExclusive(&Vcb->PagingIoResource, TRUE);
ExReleaseResource(&Vcb->PagingIoResource);
CcPurgeCacheSection(&(Vcb->SectionObject),
(PLARGE_INTEGER)&(ByteOffset),
Length,
FALSE);
ExReleaseResource(&Vcb->MainResource);
MainResourceAcquired = FALSE;
}
if (!PagingIo)
{
if (!ExAcquireResourceExclusiveLite(
&Vcb->MainResource,
IrpContext->IsSynchronous))
{
Status = STATUS_PENDING;
__leave;
}
MainResourceAcquired = TRUE;
}
else
{
/*
ULONG ResShCnt, ResExCnt;
ResShCnt = ExIsResourceAcquiredSharedLite(&Vcb->PagingIoResource);
ResExCnt = ExIsResourceAcquiredExclusiveLite(&Vcb->PagingIoResource);
FFSPrint((DBG_USER, "PagingIoRes: %xh:%xh Synchronous=%xh\n", ResShCnt, ResExCnt, IrpContext->IsSynchronous));
*/
if (Ccb)
{
if (!ExAcquireResourceSharedLite(
&Vcb->PagingIoResource,
IrpContext->IsSynchronous))
{
Status = STATUS_PENDING;
__leave;
}
PagingIoResourceAcquired = TRUE;
}
}
if (!Nocache)
{
if ((ByteOffset.QuadPart + Length) >
Vcb->PartitionInformation.PartitionLength.QuadPart
)
{
Length = (ULONG) (
Vcb->PartitionInformation.PartitionLength.QuadPart -
ByteOffset.QuadPart);
Length &= ~((ULONG)SECTOR_SIZE - 1);
}
if (FlagOn(IrpContext->MinorFunction, IRP_MN_MDL))
{
CcPrepareMdlWrite(
Vcb->StreamObj,
&ByteOffset,
Length,
&Irp->MdlAddress,
&Irp->IoStatus);
Status = Irp->IoStatus.Status;
}
else
{
Buffer = FFSGetUserBuffer(Irp);
if (Buffer == NULL)
{
FFSBreakPoint();
Status = STATUS_INVALID_USER_BUFFER;
__leave;
}
if (!CcCopyWrite(Vcb->StreamObj,
(PLARGE_INTEGER)(&ByteOffset),
Length,
TRUE,
Buffer))
{
Status = STATUS_PENDING;
__leave;
}
Status = Irp->IoStatus.Status;
FFSAddMcbEntry(Vcb, ByteOffset.QuadPart, (LONGLONG)Length);
}
if (NT_SUCCESS(Status))
{
Irp->IoStatus.Information = Length;
}
}
else
{
PFFS_BDL ffs_bdl = NULL;
ULONG Blocks = 0;
LONGLONG DirtyStart;
LONGLONG DirtyLba;
LONGLONG DirtyLength;
LONGLONG RemainLength;
if ((ByteOffset.QuadPart + Length) >
Vcb->PartitionInformation.PartitionLength.QuadPart)
{
Length = (ULONG)(
Vcb->PartitionInformation.PartitionLength.QuadPart -
ByteOffset.QuadPart);
Length &= ~((ULONG)SECTOR_SIZE - 1);
}
Status = FFSLockUserBuffer(
IrpContext->Irp,
Length,
IoReadAccess);
if (!NT_SUCCESS(Status))
{
__leave;
}
ffs_bdl = ExAllocatePool(PagedPool,
(Length / Vcb->BlockSize) *
sizeof(FFS_BDL));
if (!ffs_bdl)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
__leave;
}
DirtyLba = ByteOffset.QuadPart;
RemainLength = (LONGLONG)Length;
while (RemainLength > 0)
{
DirtyStart = DirtyLba;
if (FFSLookupMcbEntry(Vcb,
DirtyStart,
&DirtyLba,
&DirtyLength,
(PLONGLONG)NULL,
(PLONGLONG)NULL,
(PULONG)NULL))
{
if (DirtyLba == -1)
{
DirtyLba = DirtyStart + DirtyLength;
RemainLength = ByteOffset.QuadPart +
(LONGLONG)Length -
DirtyLba;
continue;
}
ffs_bdl[Blocks].Irp = NULL;
ffs_bdl[Blocks].Lba = DirtyLba;
ffs_bdl[Blocks].Offset = (ULONG)((LONGLONG)Length +
DirtyStart -
RemainLength -
DirtyLba);
if (DirtyLba + DirtyLength > DirtyStart + RemainLength)
{
ffs_bdl[Blocks].Length = (ULONG)(DirtyStart +
RemainLength -
DirtyLba);
RemainLength = 0;
}
else
{
ffs_bdl[Blocks].Length = (ULONG)DirtyLength;
RemainLength = (DirtyStart + RemainLength) -
(DirtyLba + DirtyLength);
}
DirtyLba = DirtyStart + DirtyLength;
Blocks++;
}
else
{
if (Blocks == 0)
{
if (ffs_bdl)
ExFreePool(ffs_bdl);
//
// Lookup fails at the first time, ie.
// no dirty blocks in the run
//
FFSBreakPoint();
if (RemainLength == (LONGLONG)Length)
Status = STATUS_SUCCESS;
else
Status = STATUS_UNSUCCESSFUL;
__leave;
}
else
{
break;
}
}
}
if (Blocks > 0)
{
Status = FFSReadWriteBlocks(IrpContext,
Vcb,
ffs_bdl,
Length,
Blocks,
FALSE);
Irp = IrpContext->Irp;
if (NT_SUCCESS(Status))
{
ULONG i;
for (i = 0; i < Blocks; i++)
{
FFSRemoveMcbEntry(Vcb,
ffs_bdl[i].Lba,
ffs_bdl[i].Length);
}
}
if (ffs_bdl)
ExFreePool(ffs_bdl);
if (!Irp)
__leave;
}
else
{
if (ffs_bdl)
ExFreePool(ffs_bdl);
Irp->IoStatus.Information = Length;
Status = STATUS_SUCCESS;
__leave;
}
}
}
__finally
{
if (PagingIoResourceAcquired)
{
ExReleaseResourceForThreadLite(
&Vcb->PagingIoResource,
ExGetCurrentResourceThread());
}
if (MainResourceAcquired)
{
ExReleaseResourceForThreadLite(
&Vcb->MainResource,
ExGetCurrentResourceThread());
}
if (!IrpContext->ExceptionInProgress)
{
if (Irp)
{
if (Status == STATUS_PENDING)
{
if(!bDeferred)
{
Status = FFSLockUserBuffer(
IrpContext->Irp,
Length,
IoReadAccess);
if (NT_SUCCESS(Status))
{
Status = FFSQueueRequest(IrpContext);
}
else
{
FFSCompleteIrpContext(IrpContext, Status);
}
}
}
else
{
if (NT_SUCCESS(Status))
{
if (SynchronousIo && !PagingIo)
{
FileObject->CurrentByteOffset.QuadPart =
ByteOffset.QuadPart + Irp->IoStatus.Information;
}
if (!PagingIo)
{
SetFlag(FileObject->Flags, FO_FILE_MODIFIED);
}
}
FFSCompleteIrpContext(IrpContext, Status);
}
}
else
{
FFSFreeIrpContext(IrpContext);
}
}
}
return Status;
}
BOOLEAN
FFSIsDirectoryEmpty(
PFFS_VCB Vcb,
PFFS_FCB Dcb)
{
NTSTATUS Status = STATUS_UNSUCCESSFUL;
PFFS_DIR_ENTRY pTarget = NULL;
ULONG dwBytes = 0;
ULONG dwRet;
BOOLEAN bRet = TRUE;
PAGED_CODE();
if (!IsFlagOn(Dcb->FFSMcb->FileAttr, FILE_ATTRIBUTE_DIRECTORY))
return TRUE;
_SEH2_TRY
{
pTarget = (PFFS_DIR_ENTRY)ExAllocatePoolWithTag(PagedPool,
FFS_DIR_REC_LEN(FFS_NAME_LEN), FFS_POOL_TAG);
if (!pTarget)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
_SEH2_LEAVE;
}
dwBytes = 0;
while ((LONGLONG)dwBytes < Dcb->Header.AllocationSize.QuadPart)
{
RtlZeroMemory(pTarget, FFS_DIR_REC_LEN(FFS_NAME_LEN));
if (FS_VERSION == 1)
{
Status = FFSv1ReadInode(
NULL,
Vcb,
Dcb->dinode1,
dwBytes,
(PVOID)pTarget,
FFS_DIR_REC_LEN(FFS_NAME_LEN),
&dwRet);
}
else
{
Status = FFSv2ReadInode(
NULL,
Vcb,
Dcb->dinode2,
dwBytes,
(PVOID)pTarget,
FFS_DIR_REC_LEN(FFS_NAME_LEN),
&dwRet);
}
if (!NT_SUCCESS(Status))
{
FFSPrint((DBG_ERROR, "FFSRemoveEntry: Reading Directory Content error.\n"));
_SEH2_LEAVE;
}
if (pTarget->d_ino)
{
if (pTarget->d_namlen == 1 && pTarget->d_name[0] == '.')
{
}
else if (pTarget->d_namlen == 2 && pTarget->d_name[0] == '.' &&
pTarget->d_name[1] == '.')
{
}
else
{
bRet = FALSE;
break;
}
}
else
{
break;
}
dwBytes += pTarget->d_reclen;
}
}
_SEH2_FINALLY
{
if (pTarget != NULL)
{
ExFreePool(pTarget);
}
} _SEH2_END;
return bRet;
}
__drv_mustHoldCriticalRegion
NTSTATUS
FFSInvalidateVolumes(
IN PFFS_IRP_CONTEXT IrpContext)
{
NTSTATUS Status;
PIRP Irp;
PIO_STACK_LOCATION IrpSp;
HANDLE Handle;
PLIST_ENTRY ListEntry;
PFILE_OBJECT FileObject;
PDEVICE_OBJECT DeviceObject;
BOOLEAN GlobalResourceAcquired = FALSE;
LUID Privilege = {SE_TCB_PRIVILEGE, 0};
_SEH2_TRY
{
Irp = IrpContext->Irp;
IrpSp = IoGetCurrentIrpStackLocation(Irp);
if (!SeSinglePrivilegeCheck(Privilege, Irp->RequestorMode))
{
Status = STATUS_PRIVILEGE_NOT_HELD;
_SEH2_LEAVE;
}
if (
#if !defined(_GNU_NTIFS_) || defined(__REACTOS__)
IrpSp->Parameters.FileSystemControl.InputBufferLength
#else
((PEXTENDED_IO_STACK_LOCATION)(IrpSp))->
Parameters.FileSystemControl.InputBufferLength
#endif
!= sizeof(HANDLE))
{
Status = STATUS_INVALID_PARAMETER;
_SEH2_LEAVE;
}
Handle = *(PHANDLE)Irp->AssociatedIrp.SystemBuffer;
Status = ObReferenceObjectByHandle(Handle,
0,
*IoFileObjectType,
KernelMode,
(void **)&FileObject,
NULL);
if (!NT_SUCCESS(Status))
{
_SEH2_LEAVE;
}
else
{
ObDereferenceObject(FileObject);
DeviceObject = FileObject->DeviceObject;
}
FFSPrint((DBG_INFO, "FFSInvalidateVolumes: FileObject=%xh ...\n", FileObject));
ExAcquireResourceExclusiveLite(
&FFSGlobal->Resource,
TRUE);
GlobalResourceAcquired = TRUE;
ListEntry = FFSGlobal->VcbList.Flink;
while (ListEntry != &FFSGlobal->VcbList)
{
PFFS_VCB Vcb;
Vcb = CONTAINING_RECORD(ListEntry, FFS_VCB, Next);
ListEntry = ListEntry->Flink;
FFSPrint((DBG_INFO, "FFSInvalidateVolumes: Vcb=%xh Vcb->Vpb=%xh...\n", Vcb, Vcb->Vpb));
if (Vcb->Vpb && (Vcb->Vpb->RealDevice == DeviceObject))
{
ExAcquireResourceExclusiveLite(&Vcb->MainResource, TRUE);
FFSPrint((DBG_INFO, "FFSInvalidateVolumes: FFSPurgeVolume...\n"));
FFSPurgeVolume(Vcb, FALSE);
ClearFlag(Vcb->Flags, VCB_MOUNTED);
ExReleaseResourceLite(&Vcb->MainResource);
//
// Vcb is still attached on the list ......
//
if (ListEntry->Blink == &Vcb->Next)
{
FFSPrint((DBG_INFO, "FFSInvalidateVolumes: FFSCheckDismount...\n"));
FFSCheckDismount(IrpContext, Vcb, FALSE);
}
}
}
}
_SEH2_FINALLY
{
if (GlobalResourceAcquired)
{
ExReleaseResourceForThreadLite(
&FFSGlobal->Resource,
ExGetCurrentResourceThread());
}
FFSCompleteIrpContext(IrpContext, Status);
} _SEH2_END;
return Status;
}
__drv_mustHoldCriticalRegion
NTSTATUS
FFSPurgeVolume(
IN PFFS_VCB Vcb,
IN BOOLEAN FlushBeforePurge)
{
PFFS_FCB Fcb;
LIST_ENTRY FcbList;
PLIST_ENTRY ListEntry;
PFCB_LIST_ENTRY FcbListEntry;
PAGED_CODE();
_SEH2_TRY
{
ASSERT(Vcb != NULL);
ASSERT((Vcb->Identifier.Type == FFSVCB) &&
(Vcb->Identifier.Size == sizeof(FFS_VCB)));
if (IsFlagOn(Vcb->Flags, VCB_READ_ONLY) ||
IsFlagOn(Vcb->Flags, VCB_WRITE_PROTECTED))
{
FlushBeforePurge = FALSE;
}
FcbListEntry= NULL;
InitializeListHead(&FcbList);
for (ListEntry = Vcb->FcbList.Flink;
ListEntry != &Vcb->FcbList;
ListEntry = ListEntry->Flink)
{
Fcb = CONTAINING_RECORD(ListEntry, FFS_FCB, Next);
Fcb->ReferenceCount++;
FFSPrint((DBG_INFO, "FFSPurgeVolume: %s refercount=%xh\n", Fcb->AnsiFileName.Buffer, Fcb->ReferenceCount));
FcbListEntry = ExAllocatePoolWithTag(PagedPool, sizeof(FCB_LIST_ENTRY), FFS_POOL_TAG);
if (FcbListEntry)
{
FcbListEntry->Fcb = Fcb;
InsertTailList(&FcbList, &FcbListEntry->Next);
}
else
{
FFSPrint((DBG_ERROR, "FFSPurgeVolume: Error allocating FcbListEntry ...\n"));
}
}
while (!IsListEmpty(&FcbList))
{
ListEntry = RemoveHeadList(&FcbList);
FcbListEntry = CONTAINING_RECORD(ListEntry, FCB_LIST_ENTRY, Next);
Fcb = FcbListEntry->Fcb;
if (ExAcquireResourceExclusiveLite(
&Fcb->MainResource,
TRUE))
{
FFSPurgeFile(Fcb, FlushBeforePurge);
if (!Fcb->OpenHandleCount && Fcb->ReferenceCount == 1)
{
RemoveEntryList(&Fcb->Next);
FFSFreeFcb(Fcb);
}
else
{
ExReleaseResourceForThreadLite(
&Fcb->MainResource,
ExGetCurrentResourceThread());
}
}
ExFreePool(FcbListEntry);
}
if (FlushBeforePurge)
{
ExAcquireSharedStarveExclusive(&Vcb->PagingIoResource, TRUE);
ExReleaseResourceLite(&Vcb->PagingIoResource);
CcFlushCache(&Vcb->SectionObject, NULL, 0, NULL);
}
if (Vcb->SectionObject.ImageSectionObject)
{
MmFlushImageSection(&Vcb->SectionObject, MmFlushForWrite);
}
if (Vcb->SectionObject.DataSectionObject)
{
CcPurgeCacheSection(&Vcb->SectionObject, NULL, 0, FALSE);
}
FFSPrint((DBG_INFO, "FFSPurgeVolume: Volume flushed and purged.\n"));
}
_SEH2_FINALLY
{
// Nothing
} _SEH2_END;
return STATUS_SUCCESS;
}
NTSTATUS
FFSWriteFile(
IN PFFS_IRP_CONTEXT IrpContext)
{
NTSTATUS Status = STATUS_UNSUCCESSFUL;
PFFS_VCB Vcb = NULL;
PFFS_FCB Fcb = NULL;
PFFS_CCB Ccb = NULL;
PFILE_OBJECT FileObject = NULL;
PFILE_OBJECT CacheObject;
PDEVICE_OBJECT DeviceObject = NULL;
PIRP Irp = NULL;
PIO_STACK_LOCATION IoStackLocation = NULL;
ULONG Length;
ULONG ReturnedLength = 0;
LARGE_INTEGER ByteOffset;
BOOLEAN PagingIo;
BOOLEAN Nocache;
BOOLEAN SynchronousIo;
BOOLEAN MainResourceAcquired = FALSE;
BOOLEAN PagingIoResourceAcquired = FALSE;
BOOLEAN bNeedExtending = FALSE;
BOOLEAN bAppendFile = FALSE;
BOOLEAN bDeferred = FALSE;
PUCHAR Buffer = NULL;
__try
{
ASSERT(IrpContext);
ASSERT((IrpContext->Identifier.Type == FFSICX) &&
(IrpContext->Identifier.Size == sizeof(FFS_IRP_CONTEXT)));
DeviceObject = IrpContext->DeviceObject;
Vcb = (PFFS_VCB)DeviceObject->DeviceExtension;
ASSERT(Vcb != NULL);
ASSERT((Vcb->Identifier.Type == FFSVCB) &&
(Vcb->Identifier.Size == sizeof(FFS_VCB)));
FileObject = IrpContext->FileObject;
Fcb = (PFFS_FCB)FileObject->FsContext;
ASSERT(Fcb);
ASSERT((Fcb->Identifier.Type == FFSFCB) &&
(Fcb->Identifier.Size == sizeof(FFS_FCB)));
Ccb = (PFFS_CCB)FileObject->FsContext2;
Irp = IrpContext->Irp;
IoStackLocation = IoGetCurrentIrpStackLocation(Irp);
Length = IoStackLocation->Parameters.Write.Length;
ByteOffset = IoStackLocation->Parameters.Write.ByteOffset;
PagingIo = (Irp->Flags & IRP_PAGING_IO ? TRUE : FALSE);
Nocache = (Irp->Flags & IRP_NOCACHE ? TRUE : FALSE);
SynchronousIo = (FileObject->Flags & FO_SYNCHRONOUS_IO ? TRUE : FALSE);
FFSPrint((DBG_INFO, "FFSWriteFile: Off=%I64xh Len=%xh Paging=%xh Nocache=%xh\n",
ByteOffset.QuadPart, Length, PagingIo, Nocache));
/*
if (IsFlagOn(Fcb->Flags, FCB_FILE_DELETED))
{
Status = STATUS_FILE_DELETED;
__leave;
}
if (IsFlagOn(Fcb->Flags, FCB_DELETE_PENDING))
{
Status = STATUS_DELETE_PENDING;
__leave;
}
*/
if (Length == 0)
{
Irp->IoStatus.Information = 0;
Status = STATUS_SUCCESS;
__leave;
}
if (Nocache &&
(ByteOffset.LowPart & (SECTOR_SIZE - 1) ||
Length & (SECTOR_SIZE - 1)))
{
Status = STATUS_INVALID_PARAMETER;
__leave;
}
if (FlagOn(IrpContext->MinorFunction, IRP_MN_DPC))
{
ClearFlag(IrpContext->MinorFunction, IRP_MN_DPC);
Status = STATUS_PENDING;
__leave;
}
#if FALSE
if (!Nocache)
{
BOOLEAN bAgain = IsFlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_DEFERRED);
BOOLEAN bWait = IsFlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_WAIT);
BOOLEAN bQueue = IsFlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_REQUEUED);
if (!CcCanIWrite(
FileObject,
Length,
(bWait && bQueue),
bAgain))
{
SetFlag(IrpContext->Flags, IRP_CONTEXT_FLAG_DEFERRED);
CcDeferWrite(FileObject,
(PCC_POST_DEFERRED_WRITE)FFSDeferWrite,
IrpContext,
Irp,
Length,
bAgain);
bDeferred = TRUE;
FFSBreakPoint();
Status = STATUS_PENDING;
__leave;
}
}
#endif
if (IsEndOfFile(ByteOffset))
{
bAppendFile = TRUE;
ByteOffset.QuadPart = Fcb->Header.FileSize.QuadPart;
}
if (FlagOn(Fcb->FFSMcb->FileAttr, FILE_ATTRIBUTE_DIRECTORY) && !PagingIo)
{
Status = STATUS_INVALID_DEVICE_REQUEST;
__leave;
}
//
// Do flushing for such cases
//
if (Nocache && !PagingIo && (Fcb->SectionObject.DataSectionObject != NULL))
{
ExAcquireResourceExclusive(&Fcb->MainResource,
IsFlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_WAIT));
MainResourceAcquired = TRUE;
ExAcquireSharedStarveExclusive(&Fcb->PagingIoResource, TRUE);
ExReleaseResource(&Fcb->PagingIoResource);
CcFlushCache(&(Fcb->SectionObject),
&ByteOffset,
Length,
&(Irp->IoStatus));
ClearFlag(Fcb->Flags, FCB_FILE_MODIFIED);
if (!NT_SUCCESS(Irp->IoStatus.Status))
{
Status = Irp->IoStatus.Status;
__leave;
}
ExAcquireSharedStarveExclusive(&Fcb->PagingIoResource, TRUE);
ExReleaseResource(&Fcb->PagingIoResource);
CcPurgeCacheSection(&(Fcb->SectionObject),
(PLARGE_INTEGER)&(ByteOffset),
Length,
FALSE);
ExReleaseResource(&Fcb->MainResource);
MainResourceAcquired = FALSE;
}
if (!PagingIo)
{
if (!ExAcquireResourceExclusiveLite(
&Fcb->MainResource,
IrpContext->IsSynchronous))
{
Status = STATUS_PENDING;
__leave;
}
MainResourceAcquired = TRUE;
}
else
{
/*
ULONG ResShCnt, ResExCnt;
ResShCnt = ExIsResourceAcquiredSharedLite(&Fcb->PagingIoResource);
ResExCnt = ExIsResourceAcquiredExclusiveLite(&Fcb->PagingIoResource);
FFSPrint((DBG_USER, "FFSWriteFile: Inode=%xh %S PagingIo: %xh:%xh Synchronous=%xh\n",
Fcb->FFSMcb->Inode, Fcb->FFSMcb->ShortName.Buffer, ResShCnt, ResExCnt, IrpContext->IsSynchronous));
*/
if (!ExAcquireResourceSharedLite(
&Fcb->PagingIoResource,
IrpContext->IsSynchronous))
{
Status = STATUS_PENDING;
__leave;
}
PagingIoResourceAcquired = TRUE;
}
if (!PagingIo)
{
if (!FsRtlCheckLockForWriteAccess(
&Fcb->FileLockAnchor,
Irp))
{
Status = STATUS_FILE_LOCK_CONFLICT;
__leave;
}
}
if (Nocache)
{
if ((ByteOffset.QuadPart + Length) >
Fcb->Header.AllocationSize.QuadPart)
{
if (ByteOffset.QuadPart >=
Fcb->Header.AllocationSize.QuadPart)
{
Status = STATUS_SUCCESS;
Irp->IoStatus.Information = 0;
__leave;
}
else
{
if (Length > (ULONG)(Fcb->Header.AllocationSize.QuadPart
- ByteOffset.QuadPart))
{
Length = (ULONG)(Fcb->Header.AllocationSize.QuadPart
- ByteOffset.QuadPart);
}
}
}
}
if (!Nocache)
{
if (FlagOn(Fcb->FFSMcb->FileAttr, FILE_ATTRIBUTE_DIRECTORY))
{
__leave;
}
if (FileObject->PrivateCacheMap == NULL)
{
CcInitializeCacheMap(
FileObject,
(PCC_FILE_SIZES)(&Fcb->Header.AllocationSize),
FALSE,
&FFSGlobal->CacheManagerCallbacks,
Fcb);
CcSetReadAheadGranularity(
FileObject,
READ_AHEAD_GRANULARITY);
CcSetFileSizes(
FileObject,
(PCC_FILE_SIZES)(&(Fcb->Header.AllocationSize)));
}
CacheObject = FileObject;
//
// Need extending the size of inode ?
//
if ((bAppendFile) || ((ULONG)(ByteOffset.QuadPart + Length) >
(ULONG)(Fcb->Header.FileSize.QuadPart)))
{
LARGE_INTEGER ExtendSize;
LARGE_INTEGER FileSize;
bNeedExtending = TRUE;
FileSize = Fcb->Header.FileSize;
ExtendSize.QuadPart = (LONGLONG)(ByteOffset.QuadPart + Length);
if (ExtendSize.QuadPart > Fcb->Header.AllocationSize.QuadPart)
{
if (!FFSExpandFile(IrpContext, Vcb, Fcb, &ExtendSize))
{
Status = STATUS_INSUFFICIENT_RESOURCES;
__leave;
}
}
{
Fcb->Header.FileSize.QuadPart = ExtendSize.QuadPart;
Fcb->dinode1->di_size = (ULONG)ExtendSize.QuadPart;
}
if (FileObject->PrivateCacheMap)
{
CcSetFileSizes(FileObject, (PCC_FILE_SIZES)(&(Fcb->Header.AllocationSize)));
if (ByteOffset.QuadPart > FileSize.QuadPart)
{
FFSZeroHoles(IrpContext, Vcb, FileObject, FileSize.QuadPart,
ByteOffset.QuadPart - FileSize.QuadPart);
}
if (Fcb->Header.AllocationSize.QuadPart > ExtendSize.QuadPart)
{
FFSZeroHoles(IrpContext, Vcb, FileObject, ExtendSize.QuadPart,
Fcb->Header.AllocationSize.QuadPart - ExtendSize.QuadPart);
}
}
if (FFSv1SaveInode(IrpContext, Vcb, Fcb->FFSMcb->Inode, Fcb->dinode1))
{
Status = STATUS_SUCCESS;
}
FFSNotifyReportChange(
IrpContext,
Vcb,
Fcb,
FILE_NOTIFY_CHANGE_SIZE,
FILE_ACTION_MODIFIED);
}
if (FlagOn(IrpContext->MinorFunction, IRP_MN_MDL))
{
CcPrepareMdlWrite(
CacheObject,
(&ByteOffset),
Length,
&Irp->MdlAddress,
&Irp->IoStatus);
Status = Irp->IoStatus.Status;
}
else
{
Buffer = FFSGetUserBuffer(Irp);
if (Buffer == NULL)
{
FFSBreakPoint();
Status = STATUS_INVALID_USER_BUFFER;
__leave;
}
if (!CcCopyWrite(
CacheObject,
(PLARGE_INTEGER)&ByteOffset,
Length,
IrpContext->IsSynchronous,
Buffer))
{
Status = STATUS_PENDING;
__leave;
}
Status = Irp->IoStatus.Status;
}
if (NT_SUCCESS(Status))
{
Irp->IoStatus.Information = Length;
if (IsFlagOn(Vcb->Flags, VCB_FLOPPY_DISK))
{
FFSPrint((DBG_USER, "FFSWriteFile is starting FlushingDpc...\n"));
FFSStartFloppyFlushDpc(Vcb, Fcb, FileObject);
}
}
}
else
{
ReturnedLength = Length;
Status = FFSLockUserBuffer(
IrpContext->Irp,
Length,
IoReadAccess);
if (!NT_SUCCESS(Status))
{
__leave;
}
Irp->IoStatus.Status = STATUS_SUCCESS;
Irp->IoStatus.Information = Length;
Status =
FFSv1WriteInode(
IrpContext,
Vcb,
Fcb->dinode1,
(ULONGLONG)(ByteOffset.QuadPart),
NULL,
Length,
TRUE,
&ReturnedLength);
Irp = IrpContext->Irp;
}
}
__finally
{
if (PagingIoResourceAcquired)
{
ExReleaseResourceForThreadLite(
&Fcb->PagingIoResource,
ExGetCurrentResourceThread());
}
if (MainResourceAcquired)
{
ExReleaseResourceForThreadLite(
&Fcb->MainResource,
ExGetCurrentResourceThread());
}
if (!IrpContext->ExceptionInProgress)
{
if (Irp)
{
if (Status == STATUS_PENDING)
{
if (!bDeferred)
{
Status = FFSLockUserBuffer(
IrpContext->Irp,
Length,
IoReadAccess);
if (NT_SUCCESS(Status))
{
Status = FFSQueueRequest(IrpContext);
}
else
{
FFSCompleteIrpContext(IrpContext, Status);
}
}
}
else
{
if (NT_SUCCESS(Status))
{
if (SynchronousIo && !PagingIo)
{
FileObject->CurrentByteOffset.QuadPart =
ByteOffset.QuadPart + Irp->IoStatus.Information;
}
if (!PagingIo)
{
SetFlag(FileObject->Flags, FO_FILE_MODIFIED);
SetFlag(Fcb->Flags, FCB_FILE_MODIFIED);
}
}
FFSCompleteIrpContext(IrpContext, Status);
}
}
else
{
FFSFreeIrpContext(IrpContext);
}
}
}
return Status;
}
__drv_mustHoldCriticalRegion
NTSTATUS
FFSClose(
IN PFFS_IRP_CONTEXT IrpContext)
{
PDEVICE_OBJECT DeviceObject;
NTSTATUS Status = STATUS_SUCCESS;
PFFS_VCB Vcb = 0;
BOOLEAN VcbResourceAcquired = FALSE;
PFILE_OBJECT FileObject;
PFFS_FCB Fcb = 0;
BOOLEAN FcbResourceAcquired = FALSE;
PFFS_CCB Ccb;
BOOLEAN FreeVcb = FALSE;
PAGED_CODE();
_SEH2_TRY
{
ASSERT(IrpContext != NULL);
ASSERT((IrpContext->Identifier.Type == FFSICX) &&
(IrpContext->Identifier.Size == sizeof(FFS_IRP_CONTEXT)));
DeviceObject = IrpContext->DeviceObject;
if (DeviceObject == FFSGlobal->DeviceObject)
{
Status = STATUS_SUCCESS;
_SEH2_LEAVE;
}
Vcb = (PFFS_VCB) DeviceObject->DeviceExtension;
ASSERT(Vcb != NULL);
ASSERT((Vcb->Identifier.Type == FFSVCB) &&
(Vcb->Identifier.Size == sizeof(FFS_VCB)));
ASSERT(IsMounted(Vcb));
if (!ExAcquireResourceExclusiveLite(
&Vcb->MainResource,
IrpContext->IsSynchronous))
{
FFSPrint((DBG_INFO, "FFSClose: PENDING ... Vcb: %xh/%xh\n",
Vcb->OpenFileHandleCount, Vcb->ReferenceCount));
Status = STATUS_PENDING;
_SEH2_LEAVE;
}
VcbResourceAcquired = TRUE;
FileObject = IrpContext->FileObject;
if (IsFlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_DELAY_CLOSE))
{
Fcb = IrpContext->Fcb;
Ccb = IrpContext->Ccb;
}
else
{
Fcb = (PFFS_FCB)FileObject->FsContext;
if (!Fcb)
{
Status = STATUS_SUCCESS;
_SEH2_LEAVE;
}
ASSERT(Fcb != NULL);
Ccb = (PFFS_CCB)FileObject->FsContext2;
}
if (Fcb->Identifier.Type == FFSVCB)
{
Vcb->ReferenceCount--;
if (!Vcb->ReferenceCount && FlagOn(Vcb->Flags, VCB_DISMOUNT_PENDING))
{
FreeVcb = TRUE;
}
if (Ccb)
{
FFSFreeCcb(Ccb);
if (FileObject)
{
FileObject->FsContext2 = Ccb = NULL;
}
}
Status = STATUS_SUCCESS;
_SEH2_LEAVE;
}
if (Fcb->Identifier.Type != FFSFCB || Fcb->Identifier.Size != sizeof(FFS_FCB))
{
#if DBG
FFSPrint((DBG_ERROR, "FFSClose: Strange IRP_MJ_CLOSE by system!\n"));
ExAcquireResourceExclusiveLite(
&FFSGlobal->CountResource,
TRUE);
FFSGlobal->IRPCloseCount++;
ExReleaseResourceForThreadLite(
&FFSGlobal->CountResource,
ExGetCurrentResourceThread());
#endif
_SEH2_LEAVE;
}
ASSERT((Fcb->Identifier.Type == FFSFCB) &&
(Fcb->Identifier.Size == sizeof(FFS_FCB)));
/*
if ((!IsFlagOn(Vcb->Flags, VCB_READ_ONLY)) &&
(!IsFlagOn(Fcb->Flags, FCB_PAGE_FILE)))
*/
{
if (!ExAcquireResourceExclusiveLite(
&Fcb->MainResource,
IrpContext->IsSynchronous))
{
Status = STATUS_PENDING;
_SEH2_LEAVE;
}
FcbResourceAcquired = TRUE;
}
if (!Ccb)
{
Status = STATUS_SUCCESS;
_SEH2_LEAVE;
}
ASSERT((Ccb->Identifier.Type == FFSCCB) &&
(Ccb->Identifier.Size == sizeof(FFS_CCB)));
Fcb->ReferenceCount--;
Vcb->ReferenceCount--;
if (!Vcb->ReferenceCount && IsFlagOn(Vcb->Flags, VCB_DISMOUNT_PENDING))
{
FreeVcb = TRUE;
}
FFSPrint((DBG_INFO, "FFSClose: OpenHandleCount: %u ReferenceCount: %u %s\n",
Fcb->OpenHandleCount, Fcb->ReferenceCount, Fcb->AnsiFileName.Buffer));
if (Ccb)
{
FFSFreeCcb(Ccb);
if (FileObject)
{
FileObject->FsContext2 = Ccb = NULL;
}
}
if (!Fcb->ReferenceCount)
{
//
// Remove Fcb from Vcb->FcbList ...
//
RemoveEntryList(&Fcb->Next);
FFSFreeFcb(Fcb);
FcbResourceAcquired = FALSE;
}
Status = STATUS_SUCCESS;
}
_SEH2_FINALLY
{
if (FcbResourceAcquired)
{
ExReleaseResourceForThreadLite(
&Fcb->MainResource,
ExGetCurrentResourceThread());
}
if (VcbResourceAcquired)
{
ExReleaseResourceForThreadLite(
&Vcb->MainResource,
ExGetCurrentResourceThread());
}
if (!IrpContext->ExceptionInProgress)
{
if (Status == STATUS_PENDING)
{
FFSQueueCloseRequest(IrpContext);
#if 0
/*
Status = STATUS_SUCCESS;
if (IrpContext->Irp != NULL)
{
IrpContext->Irp->IoStatus.Status = Status;
FFSCompleteRequest(
IrpContext->Irp,
(BOOLEAN)!IsFlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_REQUEUED),
(CCHAR)
(NT_SUCCESS(Status) ? IO_DISK_INCREMENT : IO_NO_INCREMENT));
IrpContext->Irp = NULL;
}
*/
#endif
}
else
{
FFSCompleteIrpContext(IrpContext, Status);
if (FreeVcb)
{
ExAcquireResourceExclusiveLite(
&FFSGlobal->Resource, TRUE);
FFSClearVpbFlag(Vcb->Vpb, VPB_MOUNTED);
FFSRemoveVcb(Vcb);
ExReleaseResourceForThreadLite(
&FFSGlobal->Resource,
ExGetCurrentResourceThread());
FFSFreeVcb(Vcb);
}
}
}
} _SEH2_END;
return Status;
}
