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sys: FspMainFileOpen, FspMainFileClose, FspMainFileOpenCheck

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This commit is contained in:
Bill Zissimopoulos
2016-10-04 22:19:41 -07:00
parent 1d435269bd
commit 860e9db8a7
4 changed files with 245 additions and 144 deletions
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117
src/sys/util.c
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@ -23,17 +23,6 @@ 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 FspMainFileOpen(
PDEVICE_OBJECT DeviceObject,
PUNICODE_STRING MainFileName, BOOLEAN CaseSensitive,
PSECURITY_DESCRIPTOR SecurityDescriptor,
ULONG FileAttributes,
ULONG Disposition,
PHANDLE PMainFileHandle,
PFILE_OBJECT *PMainFileObject);
NTSTATUS FspMainFileClose(
HANDLE MainFileHandle,
PFILE_OBJECT MainFileObject);
NTSTATUS FspSendSetInformationIrp(PDEVICE_OBJECT DeviceObject, PFILE_OBJECT FileObject,
FILE_INFORMATION_CLASS FileInformationClass, PVOID FileInformation, ULONG Length);
static NTSTATUS FspSendSetInformationIrpCompletion(
@ -104,8 +93,6 @@ 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, FspMainFileOpen)
#pragma alloc_text(PAGE, FspMainFileClose)
#pragma alloc_text(PAGE, FspSendSetInformationIrp)
#pragma alloc_text(PAGE, FspBufferUserBuffer)
#pragma alloc_text(PAGE, FspLockUserBuffer)
@ -386,110 +373,6 @@ NTSTATUS FspGetDeviceObjectPointer(PUNICODE_STRING ObjectName, ACCESS_MASK Desir
return Result;
}
NTSTATUS FspMainFileOpen(
PDEVICE_OBJECT DeviceObject,
PUNICODE_STRING MainFileName, BOOLEAN CaseSensitive,
PSECURITY_DESCRIPTOR SecurityDescriptor,
ULONG FileAttributes,
ULONG Disposition,
PHANDLE PMainFileHandle,
PFILE_OBJECT *PMainFileObject)
{
PAGED_CODE();
OBJECT_ATTRIBUTES ObjectAttributes;
IO_STATUS_BLOCK IoStatus;
HANDLE MainFileHandle;
PFILE_OBJECT MainFileObject;
/* assert that the supplied name is actually a main file name */
ASSERT(FspUnicodePathIsValid(MainFileName, 0));
*PMainFileHandle = 0;
*PMainFileObject = 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,
MainFileName,
OBJ_KERNEL_HANDLE | OBJ_FORCE_ACCESS_CHECK | (CaseSensitive ? 0 : OBJ_CASE_INSENSITIVE),
0/*RootDirectory*/,
SecurityDescriptor);
IoStatus.Status = IoCreateFileSpecifyDeviceObjectHint(
&MainFileHandle,
FILE_READ_ATTRIBUTES,
&ObjectAttributes,
&IoStatus,
0/*AllocationSize*/,
FileAttributes,
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(
MainFileHandle,
0/*DesiredAccess*/,
*IoFileObjectType,
KernelMode,
&MainFileObject,
0/*HandleInformation*/);
if (!NT_SUCCESS(IoStatus.Status))
{
ObCloseHandle(MainFileHandle, KernelMode);
return IoStatus.Status;
}
*PMainFileHandle = MainFileHandle;
*PMainFileObject = MainFileObject;
return STATUS_SUCCESS;
}
NTSTATUS FspMainFileClose(
HANDLE MainFileHandle,
PFILE_OBJECT MainFileObject)
{
PAGED_CODE();
NTSTATUS Result = STATUS_SUCCESS;
if (0 != MainFileObject)
ObDereferenceObject(MainFileObject);
if (0 != MainFileHandle)
{
Result = ObCloseHandle(MainFileHandle, KernelMode);
if (!NT_SUCCESS(Result))
DEBUGLOG("ObCloseHandle() = %s", NtStatusSym(Result));
}
return Result;
}
typedef struct
{
IO_STATUS_BLOCK IoStatus;