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135 lines
3.6 KiB
C
135 lines
3.6 KiB
C
/*
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* PROJECT: ReactOS Kernel
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: ntoskrnl/fsrtl/unc.c
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* PURPOSE: Manages UNC support routines for file system drivers.
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* PROGRAMMERS: None.
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*/
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/* INCLUDES ******************************************************************/
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#include <ntoskrnl.h>
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#define NDEBUG
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#include <debug.h>
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/* PUBLIC FUNCTIONS **********************************************************/
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/*++
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* @name FsRtlDeregisterUncProvider
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* @unimplemented
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*
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* FILLME
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*
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* @param Handle
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* FILLME
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*
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* @return None
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*
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* @remarks None
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*
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*--*/
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VOID
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NTAPI
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FsRtlDeregisterUncProvider(IN HANDLE Handle)
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{
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UNICODE_STRING DosDevicesUNC = RTL_CONSTANT_STRING(L"\\DosDevices\\UNC");
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DPRINT("FsRtlDeregisterUncProvider: Handle=%p\n", Handle);
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//
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// Normal implementation should look like:
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// - notify mup.sys?
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// - at last deregistration, destroy \DosDevices\UNC symbolic link
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//
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ZwClose(Handle);
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IoDeleteSymbolicLink(&DosDevicesUNC);
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}
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/*++
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* @name FsRtlRegisterUncProvider
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* @unimplemented
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*
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* FILLME
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*
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* @param Handle
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* FILLME
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*
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* @param RedirectorDeviceName
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* FILLME
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*
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* @param MailslotsSupported
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*
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* @return None
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*
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* @remarks None
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*
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*--*/
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NTSTATUS
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NTAPI
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FsRtlRegisterUncProvider(IN OUT PHANDLE Handle,
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IN PUNICODE_STRING RedirectorDeviceName,
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IN BOOLEAN MailslotsSupported)
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{
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UNICODE_STRING DevNull = RTL_CONSTANT_STRING(L"\\Device\\Null");
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UNICODE_STRING DosDevicesUNC = RTL_CONSTANT_STRING(L"\\DosDevices\\UNC");
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OBJECT_ATTRIBUTES ObjectAttributes;
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IO_STATUS_BLOCK Iosb;
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HANDLE FileHandle;
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NTSTATUS Status;
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DPRINT("FsRtlRegisterUncProvider: Redirector=%wZ MailslotsSupported=%d\n",
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RedirectorDeviceName, MailslotsSupported);
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//
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// Current implementation is a hack, as it only supports one UNC provider.
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// However, it doesn't require to have a functional mup.sys driver.
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//
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//
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// Normal implementation should look like:
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// - at registration 1, creates symlink \DosDevices\UNC to new provider;
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// returns handle to \Device\Null
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// - at registration 2, load mup.sys, register both providers to mup.sys
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// and change \DosDevices\UNC to DD_MUP_DEVICE_NAME;
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// returns handle to new provider
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// - at next registrations, register provider to mup.sys;
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// returns handle to new provider
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//
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*Handle = (HANDLE)-1;
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InitializeObjectAttributes(&ObjectAttributes,
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&DevNull,
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OBJ_KERNEL_HANDLE,
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NULL,
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NULL);
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Status = ZwCreateFile(&FileHandle,
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GENERIC_WRITE,
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&ObjectAttributes,
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&Iosb,
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NULL,
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FILE_ATTRIBUTE_NORMAL,
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FILE_SHARE_READ | FILE_SHARE_WRITE,
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FILE_OPEN,
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0,
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NULL,
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0);
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if (!NT_SUCCESS(Status))
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{
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DPRINT("Failed to open %wZ\n", &DevNull);
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return Status;
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}
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Status = IoCreateSymbolicLink(&DosDevicesUNC, RedirectorDeviceName);
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if (!NT_SUCCESS(Status))
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{
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DPRINT("Failed to create symbolic link %wZ -> %wZ\n", &DosDevicesUNC, RedirectorDeviceName);
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DPRINT1("FIXME: multiple unc provider registered?\n");
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ZwClose(FileHandle);
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return Status;
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}
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*Handle = FileHandle;
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return STATUS_SUCCESS;
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}
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