Public/winfsp
1
0
Fork 0
mirror of https://github.com/winfsp/winfsp.git synced 2025-07-03 17:32:57 -05:00
Code Issues Packages Projects Releases Wiki Activity

sys: implement named stream open/close and related delete/share access issues

Browse Source
This commit is contained in:
Bill Zissimopoulos
2016-09-27 14:53:59 -07:00
parent 2ba46fdb71
commit 495fc7a5dc
7 changed files with 274 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

113
src/sys/util.c
View File

@ -23,6 +23,15 @@ VOID FspUnicodePathSuffix(PUNICODE_STRING Path, PUNICODE_STRING Remain, PUNICODE
NTSTATUS FspCreateGuid(GUID *Guid);
NTSTATUS FspGetDeviceObjectPointer(PUNICODE_STRING ObjectName, ACCESS_MASK DesiredAccess,
PULONG PFileNameIndex, PFILE_OBJECT *PFileObject, PDEVICE_OBJECT *PDeviceObject);
NTSTATUS FspMainStreamOpen(
PDEVICE_OBJECT DeviceObject,
PUNICODE_STRING MainStreamName, BOOLEAN CaseSensitive,
ULONG Disposition,
PHANDLE PMainStreamHandle,
PFILE_OBJECT *PMainStreamObject);
NTSTATUS FspMainStreamClose(
HANDLE MainStreamHandle,
PFILE_OBJECT MainStreamObject);
NTSTATUS FspSendSetInformationIrp(PDEVICE_OBJECT DeviceObject, PFILE_OBJECT FileObject,
FILE_INFORMATION_CLASS FileInformationClass, PVOID FileInformation, ULONG Length);
static NTSTATUS FspSendSetInformationIrpCompletion(
@ -93,6 +102,8 @@ NTSTATUS FspIrpHookNext(PDEVICE_OBJECT DeviceObject, PIRP Irp, PVOID Context);
#pragma alloc_text(PAGE, FspUnicodePathSuffix)
#pragma alloc_text(PAGE, FspCreateGuid)
#pragma alloc_text(PAGE, FspGetDeviceObjectPointer)
#pragma alloc_text(PAGE, FspMainStreamOpen)
#pragma alloc_text(PAGE, FspMainStreamClose)
#pragma alloc_text(PAGE, FspSendSetInformationIrp)
#pragma alloc_text(PAGE, FspBufferUserBuffer)
#pragma alloc_text(PAGE, FspLockUserBuffer)
@ -373,6 +384,108 @@ NTSTATUS FspGetDeviceObjectPointer(PUNICODE_STRING ObjectName, ACCESS_MASK Desir
return Result;
}
NTSTATUS FspMainStreamOpen(
PDEVICE_OBJECT DeviceObject,
PUNICODE_STRING MainStreamName, BOOLEAN CaseSensitive,
ULONG Disposition,
PHANDLE PMainStreamHandle,
PFILE_OBJECT *PMainStreamObject)
{
PAGED_CODE();
OBJECT_ATTRIBUTES ObjectAttributes;
IO_STATUS_BLOCK IoStatus;
HANDLE MainStreamHandle;
PFILE_OBJECT MainStreamObject;
/* assert that the supplied name is actually a main stream name */
ASSERT(FspUnicodePathIsValid(MainStreamName, 0));
*PMainStreamHandle = 0;
*PMainStreamObject = 0;
switch (Disposition)
{
case FILE_CREATE:
case FILE_OPEN_IF:
case FILE_OVERWRITE_IF:
Disposition = FILE_OPEN_IF;
break;
case FILE_OPEN:
case FILE_OVERWRITE:
case FILE_SUPERSEDE:
Disposition = FILE_OPEN;
break;
default:
return STATUS_INVALID_PARAMETER;
}
InitializeObjectAttributes(
&ObjectAttributes,
MainStreamName,
OBJ_KERNEL_HANDLE | OBJ_FORCE_ACCESS_CHECK | (CaseSensitive ? 0 : OBJ_CASE_INSENSITIVE),
0/*RootDirectory*/,
0/*SecurityDescriptor*/);
IoStatus.Status = IoCreateFileSpecifyDeviceObjectHint(
&MainStreamHandle,
FILE_READ_ATTRIBUTES,
&ObjectAttributes,
&IoStatus,
0/*AllocationSize*/,
FILE_ATTRIBUTE_NORMAL,
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
Disposition,
FILE_OPEN_REPARSE_POINT,
0/*EaBuffer*/,
0/*EaLength*/,
CreateFileTypeNone,
0/*InternalParameters*/,
IO_FORCE_ACCESS_CHECK,
DeviceObject);
if (!NT_SUCCESS(IoStatus.Status))
return IoStatus.Status;
IoStatus.Status = ObReferenceObjectByHandle(
MainStreamHandle,
0/*DesiredAccess*/,
*IoFileObjectType,
KernelMode,
&MainStreamObject,
0/*HandleInformation*/);
if (!NT_SUCCESS(IoStatus.Status))
{
ObCloseHandle(MainStreamHandle, KernelMode);
return IoStatus.Status;
}
*PMainStreamHandle = MainStreamHandle;
*PMainStreamObject = MainStreamObject;
return STATUS_SUCCESS;
}
NTSTATUS FspMainStreamClose(
HANDLE MainStreamHandle,
PFILE_OBJECT MainStreamObject)
{
PAGED_CODE();
NTSTATUS Result = STATUS_SUCCESS;
if (0 != MainStreamObject)
ObDereferenceObject(MainStreamObject);
if (0 != MainStreamHandle)
{
Result = ObCloseHandle(MainStreamHandle, KernelMode);
if (!NT_SUCCESS(Result))
DEBUGLOG("ObCloseHandle() = %s", NtStatusSym(Result));
}
return Result;
}
typedef struct
{
IO_STATUS_BLOCK IoStatus;