https://git.reactos.org/?p=reactos.git;a=commitdiff;h=650cca217ad8ad0bab16a61a96251463ebc9aaa1
commit 650cca217ad8ad0bab16a61a96251463ebc9aaa1 Author: Ged Murphy <[email protected]> AuthorDate: Thu Oct 12 21:06:41 2017 +0100 [FLTMGR] - Implement FltGetVolumeProperties - Internal structs taken from public pdbs --- drivers/filters/fltmgr/CMakeLists.txt | 1 + drivers/filters/fltmgr/Volume.c | 110 ++++++++++++++++++++++++++++++++++ drivers/filters/fltmgr/fltmgr.spec | 1 + drivers/filters/fltmgr/fltmgrint.h | 108 +++++++++++++++++++++++++++++++++ 4 files changed, 220 insertions(+) diff --git a/drivers/filters/fltmgr/CMakeLists.txt b/drivers/filters/fltmgr/CMakeLists.txt index f3d52e2200..5a02cab116 100644 --- a/drivers/filters/fltmgr/CMakeLists.txt +++ b/drivers/filters/fltmgr/CMakeLists.txt @@ -7,6 +7,7 @@ list(APPEND SOURCE Messaging.c Misc.c Object.c + Volume.c ${CMAKE_CURRENT_BINARY_DIR}/fltmgr.def fltmgr.h) diff --git a/drivers/filters/fltmgr/Volume.c b/drivers/filters/fltmgr/Volume.c new file mode 100644 index 0000000000..6a854f76a6 --- /dev/null +++ b/drivers/filters/fltmgr/Volume.c @@ -0,0 +1,110 @@ +/* +* PROJECT: Filesystem Filter Manager +* LICENSE: GPL - See COPYING in the top level directory +* FILE: drivers/filters/fltmgr/Context.c +* PURPOSE: Contains routines for the volume +* PROGRAMMERS: Ged Murphy ([email protected]) +*/ + +/* INCLUDES ******************************************************************/ + +#include "fltmgr.h" +#include "fltmgrint.h" + +#define NDEBUG +#include <debug.h> + + +/* DATA *********************************************************************/ + + + +/* EXPORTED FUNCTIONS ******************************************************/ + +NTSTATUS +FLTAPI +FltGetVolumeProperties( + _In_ PFLT_VOLUME Volume, + _Out_writes_bytes_to_opt_(VolumePropertiesLength, *LengthReturned) PFLT_VOLUME_PROPERTIES VolumeProperties, + _In_ ULONG VolumePropertiesLength, + _Out_ PULONG LengthReturned +) +{ + ULONG BufferRequired; + ULONG BytesWritten; + PCHAR Ptr; + NTSTATUS Status; + + /* Calculate the required buffer size */ + BufferRequired = sizeof(FLT_VOLUME_PROPERTIES) + + Volume->CDODriverName.Length + + Volume->DeviceName.Length + + Volume->CDODeviceName.Length; + + /* If we don't have enough buffer to fill in the fixed struct, return with the required size */ + if (VolumePropertiesLength < sizeof(FLT_VOLUME_PROPERTIES)) + { + *LengthReturned = BufferRequired; + return STATUS_BUFFER_TOO_SMALL; + } + + /* Clear out the buffer */ + RtlZeroMemory(VolumeProperties, sizeof(FLT_VOLUME_PROPERTIES)); + + /* Fill in the fixed data */ + VolumeProperties->DeviceType = Volume->DeviceObject->DeviceType; + VolumeProperties->DeviceObjectFlags = Volume->DeviceObject->Flags; + VolumeProperties->AlignmentRequirement = Volume->DeviceObject->AlignmentRequirement; + VolumeProperties->SectorSize = Volume->DeviceObject->SectorSize; + if (Volume->DiskDeviceObject) + { + VolumeProperties->DeviceCharacteristics = Volume->DiskDeviceObject->Characteristics; + } + else + { + VolumeProperties->DeviceCharacteristics = Volume->DeviceObject->Characteristics; + } + + /* So far we've written the fixed struct data */ + BytesWritten = sizeof(FLT_VOLUME_PROPERTIES); + Ptr = (PCHAR)(VolumeProperties + 1); + + /* Make sure we have enough room to add the dynamic data */ + if (VolumePropertiesLength >= BufferRequired) + { + /* Add the FS device name */ + VolumeProperties->FileSystemDeviceName.Length = 0; + VolumeProperties->FileSystemDeviceName.MaximumLength = Volume->CDODeviceName.Length; + VolumeProperties->FileSystemDeviceName.Buffer = (PWCH)Ptr; + RtlCopyUnicodeString(&VolumeProperties->FileSystemDeviceName, &Volume->CDODeviceName); + Ptr += VolumeProperties->FileSystemDeviceName.Length; + + /* Add the driver name */ + VolumeProperties->FileSystemDriverName.Length = 0; + VolumeProperties->FileSystemDriverName.MaximumLength = Volume->CDODriverName.Length; + VolumeProperties->FileSystemDriverName.Buffer = (PWCH)Ptr; + RtlCopyUnicodeString(&VolumeProperties->FileSystemDriverName, &Volume->CDODriverName); + Ptr += VolumeProperties->FileSystemDriverName.Length; + + /* Add the volume name */ + VolumeProperties->RealDeviceName.Length = 0; + VolumeProperties->RealDeviceName.MaximumLength = Volume->DeviceName.Length; + VolumeProperties->RealDeviceName.Buffer = (PWCH)Ptr; + RtlCopyUnicodeString(&VolumeProperties->RealDeviceName, &Volume->DeviceName); + + BytesWritten = BufferRequired; + + Status = STATUS_SUCCESS; + } + else + { + Status = STATUS_BUFFER_OVERFLOW; + } + + /* Set the number of bytes we wrote and return */ + *LengthReturned = BytesWritten; + return Status; +} + + +/* INTERNAL FUNCTIONS ******************************************************/ \ No newline at end of file diff --git a/drivers/filters/fltmgr/fltmgr.spec b/drivers/filters/fltmgr/fltmgr.spec index 9e18cd5997..c7094eb9cf 100644 --- a/drivers/filters/fltmgr/fltmgr.spec +++ b/drivers/filters/fltmgr/fltmgr.spec @@ -7,4 +7,5 @@ @ stdcall FltBuildDefaultSecurityDescriptor(ptr long) @ stdcall FltFreeSecurityDescriptor(ptr) @ stdcall FltGetDiskDeviceObject(ptr ptr) + @ stdcall FltGetVolumeProperties(ptr ptr long ptr) diff --git a/drivers/filters/fltmgr/fltmgrint.h b/drivers/filters/fltmgr/fltmgrint.h index e5280879b0..a060b70eec 100644 --- a/drivers/filters/fltmgr/fltmgrint.h +++ b/drivers/filters/fltmgr/fltmgrint.h @@ -201,6 +201,114 @@ typedef struct _FLT_PORT_OBJECT } FLT_PORT_OBJECT, *PFLT_PORT_OBJECT; +typedef enum _FLT_VOLUME_FLAGS +{ + VOLFL_NETWORK_FILESYSTEM = 0x1, + VOLFL_PENDING_MOUNT_SETUP_NOTIFIES = 0x2, + VOLFL_MOUNT_SETUP_NOTIFIES_CALLED = 0x4, + VOLFL_MOUNTING = 0x8, + VOLFL_SENT_SHUTDOWN_IRP = 0x10, + VOLFL_ENABLE_NAME_CACHING = 0x20, + VOLFL_FILTER_EVER_ATTACHED = 0x40, + VOLFL_STANDARD_LINK_NOT_SUPPORTED = 0x80 + +} FLT_VOLUME_FLAGS, *PFLT_VOLUME_FLAGS; + + +typedef enum _CALLBACK_NODE_FLAGS +{ + CBNFL_SKIP_PAGING_IO = 0x1, + CBNFL_SKIP_CACHED_IO = 0x2, + CBNFL_USE_NAME_CALLBACK_EX = 0x4, + CBNFL_SKIP_NON_DASD_IO = 0x8 + +} CALLBACK_NODE_FLAGS, *PCALLBACK_NODE_FLAGS; + + +typedef struct _CALLBACK_CTRL +{ + LIST_ENTRY OperationLists[50]; + CALLBACK_NODE_FLAGS OperationFlags[50]; + +} CALLBACK_CTRL, *PCALLBACK_CTRL; + +typedef struct _TREE_ROOT +{ + RTL_SPLAY_LINKS *Tree; + +} TREE_ROOT, *PTREE_ROOT; + + +typedef struct _CONTEXT_LIST_CTRL +{ + TREE_ROOT List; + +} CONTEXT_LIST_CTRL, *PCONTEXT_LIST_CTRL; + +typedef struct _NAME_CACHE_LIST_CTRL_STATS +{ + ULONG Searches; + ULONG Hits; + ULONG Created; + ULONG Temporary; + ULONG Duplicate; + ULONG Removed; + ULONG RemovedDueToCase; + +} NAME_CACHE_LIST_CTRL_STATS, *PNAME_CACHE_LIST_CTRL_STATS; + + +typedef struct _NAME_CACHE_VOLUME_CTRL_STATS +{ + ULONG AllContextsTemporary; + ULONG PurgeNameCache; + NAME_CACHE_LIST_CTRL_STATS NormalizedNames; + NAME_CACHE_LIST_CTRL_STATS OpenedNames; + NAME_CACHE_LIST_CTRL_STATS ShortNames; + ULONG AncestorLookup; + ULONG ParentHit; + ULONG NonParentHit; + +} NAME_CACHE_VOLUME_CTRL_STATS, *PNAME_CACHE_VOLUME_CTRL_STATS; + + +typedef struct _NAME_CACHE_VOLUME_CTRL +{ + FAST_MUTEX Lock; + ULONG AllContextsTemporary; + LARGE_INTEGER LastRenameCompleted; + NAME_CACHE_VOLUME_CTRL_STATS Stats; + +} NAME_CACHE_VOLUME_CTRL, *PNAME_CACHE_VOLUME_CTRL; + + +typedef struct _FLT_VOLUME +{ + FLT_OBJECT Base; + FLT_VOLUME_FLAGS Flags; + FLT_FILESYSTEM_TYPE FileSystemType; + PDEVICE_OBJECT DeviceObject; + PDEVICE_OBJECT DiskDeviceObject; + PFLT_VOLUME FrameZeroVolume; + PFLT_VOLUME VolumeInNextFrame; + PFLTP_FRAME Frame; + UNICODE_STRING DeviceName; + UNICODE_STRING GuidName; + UNICODE_STRING CDODeviceName; + UNICODE_STRING CDODriverName; + FLT_RESOURCE_LIST_HEAD InstanceList; + CALLBACK_CTRL Callbacks; + EX_PUSH_LOCK ContextLock; + CONTEXT_LIST_CTRL VolumeContexts; + FLT_RESOURCE_LIST_HEAD StreamListCtrls; + FLT_RESOURCE_LIST_HEAD FileListCtrls; + NAME_CACHE_VOLUME_CTRL NameCacheCtrl; + ERESOURCE MountNotifyLock; + ULONG TargetedOpenActiveCount; + EX_PUSH_LOCK TxVolContextListLock; + TREE_ROOT TxVolContexts; + +} FLT_VOLUME, *PFLT_VOLUME;
