mirror of
https://github.com/reactos/reactos.git
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96 lines
3.1 KiB
C
96 lines
3.1 KiB
C
/*
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* PROJECT: ReactOS Drivers
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: drivers/filesystems/npfs/npfs.c
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* PURPOSE: Named pipe filesystem
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* PROGRAMMERS:
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*/
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/* INCLUDES ******************************************************************/
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#include "npfs.h"
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/* FUNCTIONS *****************************************************************/
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static VOID
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NpfsInitializeVcb(OUT PNPFS_VCB Vcb)
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{
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/* Initialize Volume Control Block, it's one per whole named pipe
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file system. */
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TRACE_(NPFS, "NpfsInitializeVcb(), Vcb = %p\n", Vcb);
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/* Zero-init whole VCB */
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RtlZeroMemory(Vcb, sizeof(NPFS_VCB));
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/* Initialize the common header */
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Vcb->NodeTypeCode = NPFS_NODETYPE_VCB;
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Vcb->NodeByteSize = sizeof(NPFS_VCB);
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}
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NTSTATUS NTAPI
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DriverEntry(IN PDRIVER_OBJECT DriverObject,
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IN PUNICODE_STRING RegistryPath)
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{
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PNPFS_DEVICE_EXTENSION DeviceExtension;
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PDEVICE_OBJECT DeviceObject;
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UNICODE_STRING DeviceName = RTL_CONSTANT_STRING(L"\\Device\\NamedPipe");
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NTSTATUS Status;
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TRACE_(NPFS, "DriverEntry(%p, %wZ)", DriverObject, RegistryPath);
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ASSERT (sizeof(NPFS_CONTEXT) <= FIELD_OFFSET(IRP, Tail.Overlay.DriverContext));
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ASSERT (sizeof(NPFS_WAITER_ENTRY) <= FIELD_OFFSET(IRP, Tail.Overlay.DriverContext));
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DriverObject->MajorFunction[IRP_MJ_CREATE] = NpfsCreate;
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DriverObject->MajorFunction[IRP_MJ_CREATE_NAMED_PIPE] = NpfsCreateNamedPipe;
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DriverObject->MajorFunction[IRP_MJ_CLOSE] = NpfsClose;
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DriverObject->MajorFunction[IRP_MJ_READ] = NpfsRead;
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DriverObject->MajorFunction[IRP_MJ_WRITE] = NpfsWrite;
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DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] = NpfsQueryInformation;
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DriverObject->MajorFunction[IRP_MJ_SET_INFORMATION] = NpfsSetInformation;
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DriverObject->MajorFunction[IRP_MJ_QUERY_VOLUME_INFORMATION] = NpfsQueryVolumeInformation;
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DriverObject->MajorFunction[IRP_MJ_CLEANUP] = NpfsCleanup;
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DriverObject->MajorFunction[IRP_MJ_FLUSH_BUFFERS] = NpfsFlushBuffers;
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DriverObject->MajorFunction[IRP_MJ_DIRECTORY_CONTROL] = NpfsDirectoryControl;
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DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] = NpfsFileSystemControl;
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//DriverObject->MajorFunction[IRP_MJ_QUERY_SECURITY] = NpfsQuerySecurity;
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//DriverObject->MajorFunction[IRP_MJ_SET_SECURITY] = NpfsSetSecurity;
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DriverObject->DriverUnload = NULL;
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Status = IoCreateDevice(DriverObject,
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sizeof(NPFS_DEVICE_EXTENSION),
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&DeviceName,
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FILE_DEVICE_NAMED_PIPE,
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0,
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FALSE,
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&DeviceObject);
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if (!NT_SUCCESS(Status))
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{
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WARN_(NPFS, "Failed to create named pipe device! (Status 0x%08x)\n", Status);
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return Status;
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}
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/* initialize the device object */
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DeviceObject->Flags = DO_DIRECT_IO;
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/* initialize the device extension */
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DeviceExtension = DeviceObject->DeviceExtension;
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NpfsInitializeVcb(&DeviceExtension->Vcb);
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InitializeListHead(&DeviceExtension->PipeListHead);
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InitializeListHead(&DeviceExtension->ThreadListHead);
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KeInitializeMutex(&DeviceExtension->PipeListLock, 0);
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DeviceExtension->EmptyWaiterCount = 0;
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/* set the size quotas */
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DeviceExtension->MinQuota = PAGE_SIZE;
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DeviceExtension->DefaultQuota = 8 * PAGE_SIZE;
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DeviceExtension->MaxQuota = 64 * PAGE_SIZE;
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return STATUS_SUCCESS;
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}
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/* EOF */
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