mirror of
https://github.com/reactos/reactos.git
synced 2024-11-09 16:20:37 +00:00
119 lines
3.2 KiB
C
119 lines
3.2 KiB
C
/*
|
|
* COPYRIGHT: See COPYING in the top level directory
|
|
* PROJECT: ReactOS kernel
|
|
* FILE: drivers/fs/npfs/volume.c
|
|
* PURPOSE: Named pipe filesystem
|
|
* PROGRAMMER: Eric Kohl
|
|
*/
|
|
|
|
/* INCLUDES *****************************************************************/
|
|
|
|
#include "npfs.h"
|
|
|
|
#define NDEBUG
|
|
#include <debug.h>
|
|
|
|
/* FUNCTIONS ****************************************************************/
|
|
|
|
static NTSTATUS
|
|
NpfsQueryFsDeviceInformation(PFILE_FS_DEVICE_INFORMATION FsDeviceInfo,
|
|
PULONG BufferLength)
|
|
{
|
|
DPRINT("NpfsQueryFsDeviceInformation()\n");
|
|
DPRINT("FsDeviceInfo = %p\n", FsDeviceInfo);
|
|
|
|
if (*BufferLength < sizeof(FILE_FS_DEVICE_INFORMATION))
|
|
{
|
|
*BufferLength = sizeof(FILE_FS_DEVICE_INFORMATION);
|
|
return STATUS_BUFFER_OVERFLOW;
|
|
}
|
|
|
|
FsDeviceInfo->DeviceType = FILE_DEVICE_NAMED_PIPE;
|
|
FsDeviceInfo->Characteristics = 0;
|
|
|
|
*BufferLength = sizeof(FILE_FS_DEVICE_INFORMATION);
|
|
|
|
DPRINT("NpfsQueryFsDeviceInformation() finished.\n");
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
static NTSTATUS
|
|
NpfsQueryFsAttributeInformation(PFILE_FS_ATTRIBUTE_INFORMATION FsAttributeInfo,
|
|
PULONG BufferLength)
|
|
{
|
|
DPRINT("NpfsQueryFsAttributeInformation() called.\n");
|
|
DPRINT("FsAttributeInfo = %p\n", FsAttributeInfo);
|
|
|
|
if (*BufferLength < sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + 8)
|
|
{
|
|
*BufferLength = (sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + 8);
|
|
return STATUS_BUFFER_OVERFLOW;
|
|
}
|
|
|
|
FsAttributeInfo->FileSystemAttributes = FILE_CASE_PRESERVED_NAMES;
|
|
FsAttributeInfo->MaximumComponentNameLength = 255;
|
|
FsAttributeInfo->FileSystemNameLength = 8;
|
|
wcscpy(FsAttributeInfo->FileSystemName,
|
|
L"NPFS");
|
|
|
|
DPRINT("NpfsQueryFsAttributeInformation() finished.\n");
|
|
*BufferLength = (sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + 8);
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
NTSTATUS NTAPI
|
|
NpfsQueryVolumeInformation(PDEVICE_OBJECT DeviceObject,
|
|
PIRP Irp)
|
|
{
|
|
PIO_STACK_LOCATION Stack;
|
|
FS_INFORMATION_CLASS FsInformationClass;
|
|
NTSTATUS Status = STATUS_SUCCESS;
|
|
PVOID SystemBuffer;
|
|
ULONG BufferLength;
|
|
|
|
/* PRECONDITION */
|
|
ASSERT(DeviceObject != NULL);
|
|
ASSERT(Irp != NULL);
|
|
|
|
DPRINT("NpfsQueryVolumeInformation(DeviceObject %p, Irp %p)\n",
|
|
DeviceObject,
|
|
Irp);
|
|
|
|
Stack = IoGetCurrentIrpStackLocation(Irp);
|
|
FsInformationClass = Stack->Parameters.QueryVolume.FsInformationClass;
|
|
BufferLength = Stack->Parameters.QueryVolume.Length;
|
|
SystemBuffer = Irp->AssociatedIrp.SystemBuffer;
|
|
|
|
DPRINT("FsInformationClass %d\n", FsInformationClass);
|
|
DPRINT("SystemBuffer %p\n", SystemBuffer);
|
|
|
|
switch (FsInformationClass)
|
|
{
|
|
case FileFsDeviceInformation:
|
|
Status = NpfsQueryFsDeviceInformation(SystemBuffer,
|
|
&BufferLength);
|
|
break;
|
|
|
|
case FileFsAttributeInformation:
|
|
Status = NpfsQueryFsAttributeInformation(SystemBuffer,
|
|
&BufferLength);
|
|
break;
|
|
|
|
default:
|
|
Status = STATUS_NOT_SUPPORTED;
|
|
}
|
|
|
|
Irp->IoStatus.Status = Status;
|
|
Irp->IoStatus.Information = BufferLength;
|
|
|
|
IoCompleteRequest(Irp,
|
|
IO_NO_INCREMENT);
|
|
|
|
return Status;
|
|
}
|
|
|
|
/* EOF */
|