cdfs.c

ReactOS是一些高手根据Windows XP的内核编写出的类XP。内核实现机理和API函数调用几乎相同。甚至可以兼容XP的程序。喜欢研究系统内核的人可以看一看。

/*
 * COPYRIGHT:        See COPYING in the top level directory
 * PROJECT:          ReactOS File System Recognizer
 * FILE:             drivers/filesystems/fs_rec/cdfs.c
 * PURPOSE:          CDFS Recognizer
 * PROGRAMMER:       Alex Ionescu ([e-mail])
 *                   Eric Kohl
 */

/* INCLUDES *****************************************************************/

#include "fs_rec.h"
#define NDEBUG
#include <debug.h>

/* FUNCTIONS ****************************************************************/

NTSTATUS
NTAPI
FsRecCdfsFsControl(IN PDEVICE_OBJECT DeviceObject,
                   IN PIRP Irp)
{
    PIO_STACK_LOCATION Stack;
    NTSTATUS Status;
    PAGED_CODE();

    /* Get the I/O Stack and check the function type */
    Stack = IoGetCurrentIrpStackLocation(Irp);
    switch (Stack->MinorFunction)
    {
        case IRP_MN_MOUNT_VOLUME:

            /* We don't validate */
            Status = STATUS_FS_DRIVER_REQUIRED;
            break;

        case IRP_MN_LOAD_FILE_SYSTEM:

            /* Load the file system */
            Status = FsRecLoadFileSystem(DeviceObject,
                                         L"\\Registry\\Machine\\System\\CurrentControlSet\\Services\\Cdfs");
            break;

        default:

            /* Invalid request */
            Status = STATUS_INVALID_DEVICE_REQUEST;
    }

    /* Return Status */
    return Status;
}

/* EOF */