mirror of
https://github.com/reactos/reactos.git
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161 lines
4.7 KiB
C
161 lines
4.7 KiB
C
/*
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* ReactOS kernel
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* Copyright (C) 2000 David Welch <welch@cwcom.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* PROJECT: ReactOS kernel
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* FILE: services/fs/minix/minix.c
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* PURPOSE: Minix FSD
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* PROGRAMMER: David Welch (welch@mcmail.com)
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* UPDATE HISTORY:
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*/
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/* INCLUDES *****************************************************************/
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#include <ntddk.h>
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#include <ntifs.h>
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//#define NDEBUG
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#include <debug.h>
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#include "minix.h"
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/* GLOBALS *******************************************************************/
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static PDRIVER_OBJECT DriverObject;
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/* FUNCTIONS ****************************************************************/
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VOID MinixMount(PDEVICE_OBJECT DeviceToMount)
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{
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PDEVICE_OBJECT DeviceObject;
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MINIX_DEVICE_EXTENSION* DeviceExt;
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IoCreateDevice(DriverObject,
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sizeof(MINIX_DEVICE_EXTENSION),
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NULL,
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FILE_DEVICE_FILE_SYSTEM,
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0,
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FALSE,
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&DeviceObject);
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DeviceObject->Flags = DeviceObject->Flags | DO_DIRECT_IO;
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DeviceExt = DeviceObject->DeviceExtension;
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MinixReadSector(DeviceToMount,1,DeviceExt->superblock_buf);
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DeviceExt->sb = (struct minix_super_block *)(DeviceExt->superblock_buf);
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DeviceExt->StorageDevice = DeviceToMount;
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DeviceExt->StorageDevice->Vpb->DeviceObject = DeviceObject;
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DeviceExt->StorageDevice->Vpb->RealDevice = DeviceExt->StorageDevice;
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DeviceExt->StorageDevice->Vpb->Flags |= VPB_MOUNTED;
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DeviceObject->StackSize = DeviceExt->StorageDevice->StackSize + 1;
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DeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
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DeviceExt->FileObject = IoCreateStreamFileObject(NULL, DeviceObject);
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}
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NTSTATUS STDCALL
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MinixFileSystemControl(PDEVICE_OBJECT DeviceObject, PIRP Irp)
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{
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PIO_STACK_LOCATION Stack = IoGetCurrentIrpStackLocation(Irp);
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// PVPB vpb = Stack->Parameters.Mount.Vpb;
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PDEVICE_OBJECT DeviceToMount = Stack->Parameters.Mount.DeviceObject;
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NTSTATUS Status;
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char* superblock_buf;
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struct minix_super_block* sb;
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DbgPrint("MinixFileSystemControl(DeviceObject %x, Irp %x)\n",DeviceObject,
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Irp);
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DPRINT("DeviceToMount %x\n",DeviceToMount);
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superblock_buf = ExAllocatePool(NonPagedPool,BLOCKSIZE);
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DPRINT("MinixReadSector %x\n",MinixReadSector);
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MinixReadSector(DeviceToMount,1,superblock_buf);
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sb = (struct minix_super_block *)superblock_buf;
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DPRINT("Magic %x\n",sb->s_magic);
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DPRINT("Imap blocks %x\n",sb->s_imap_blocks);
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DPRINT("Zmap blocks %x\n",sb->s_zmap_blocks);
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if (sb->s_magic==MINIX_SUPER_MAGIC2)
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{
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DPRINT("%s() = STATUS_SUCCESS\n",__FUNCTION__);
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MinixMount(DeviceToMount);
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Status = STATUS_SUCCESS;
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}
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else
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{
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DPRINT("%s() = STATUS_UNRECOGNIZED_VOLUME\n",__FUNCTION__);
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Status = STATUS_UNRECOGNIZED_VOLUME;
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}
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Irp->IoStatus.Status = Status;
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Irp->IoStatus.Information = 0;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return(Status);
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}
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NTSTATUS STDCALL
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DriverEntry(PDRIVER_OBJECT _DriverObject,
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PUNICODE_STRING RegistryPath)
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/*
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* FUNCTION: Called by the system to initalize the driver
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* ARGUMENTS:
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* DriverObject = object describing this driver
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* RegistryPath = path to our configuration entries
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* RETURNS: Success or failure
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*/
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{
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PDEVICE_OBJECT DeviceObject;
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NTSTATUS ret;
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UNICODE_STRING DeviceName;
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DbgPrint("Minix FSD 0.0.1\n");
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DriverObject = _DriverObject;
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RtlInitUnicodeString(&DeviceName,
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L"\\Device\\Minix");
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ret = IoCreateDevice(DriverObject,
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0,
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&DeviceName,
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FILE_DEVICE_FILE_SYSTEM,
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0,
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FALSE,
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&DeviceObject);
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if (!NT_SUCCESS(ret))
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{
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return(ret);
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}
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DeviceObject->Flags = 0;
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DriverObject->MajorFunction[IRP_MJ_CLOSE] = MinixClose;
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DriverObject->MajorFunction[IRP_MJ_CREATE] = MinixCreate;
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DriverObject->MajorFunction[IRP_MJ_READ] = MinixRead;
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DriverObject->MajorFunction[IRP_MJ_WRITE] = MinixWrite;
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DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] =
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MinixFileSystemControl;
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DriverObject->MajorFunction[IRP_MJ_DIRECTORY_CONTROL] =
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MinixDirectoryControl;
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DriverObject->DriverUnload = NULL;
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IoRegisterFileSystem(DeviceObject);
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return(STATUS_SUCCESS);
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}
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