samples update for //build

1 files changed, 196 insertions, 0 deletions

diff --git a/storage/ramdisk/src/ramdisk.h b/storage/ramdisk/src/ramdisk.h
new file mode 100644
index 00000000..764e1094
--- /dev/null
+++ b/storage/ramdisk/src/ramdisk.h
@@ -0,0 +1,196 @@
+/*++
+
+Copyright (c) 1990-2003 Microsoft Corporation, All Rights Reserved
+
+Module Name:
+
+    ramdisk.h
+
+Abstract:
+
+    This file includes data declarations for the Ram Disk driver for NT.
+
+Environment:
+
+    Kernel mode only.
+
+--*/
+
+#ifndef _RAMDISK_H_
+#define _RAMDISK_H_
+
+#pragma warning(disable:4201)  // nameless struct/union warning
+
+#include <ntddk.h>
+#include <ntdddisk.h>
+
+#pragma warning(default:4201)
+
+#include <wdf.h>
+#define NTSTRSAFE_LIB
+#include <ntstrsafe.h>
+#include "forward_progress.h"
+
+#define NT_DEVICE_NAME                  L"\\Device\\Ramdisk"
+#define DOS_DEVICE_NAME                 L"\\DosDevices\\"
+
+#define RAMDISK_TAG                     'DmaR'  // "RamD"
+#define DOS_DEVNAME_LENGTH              (sizeof(DOS_DEVICE_NAME)+sizeof(WCHAR)*10)
+#define DRIVE_LETTER_LENGTH             (sizeof(WCHAR)*10)
+
+#define DRIVE_LETTER_BUFFER_SIZE        10
+#define DOS_DEVNAME_BUFFER_SIZE         (sizeof(DOS_DEVICE_NAME) / 2) + 10
+
+#define RAMDISK_MEDIA_TYPE              0xF8
+#define DIR_ENTRIES_PER_SECTOR          16
+
+#define DEFAULT_DISK_SIZE               (1024*1024)     // 1 MB
+#define DEFAULT_ROOT_DIR_ENTRIES        512
+#define DEFAULT_SECTORS_PER_CLUSTER     2
+#define DEFAULT_DRIVE_LETTER            L"Z:"
+
+typedef struct _DISK_INFO {
+    ULONG   DiskSize;           // Ramdisk size in bytes
+    ULONG   RootDirEntries;     // No. of root directory entries
+    ULONG   SectorsPerCluster;  // Sectors per cluster
+    UNICODE_STRING DriveLetter; // Drive letter to be used
+} DISK_INFO, *PDISK_INFO;
+
+typedef struct _DEVICE_EXTENSION {
+    PUCHAR              DiskImage;                  // Pointer to beginning of disk image
+    DISK_GEOMETRY       DiskGeometry;               // Drive parameters built by Ramdisk
+    DISK_INFO           DiskRegInfo;                // Disk parameters from the registry
+    UNICODE_STRING      SymbolicLink;               // Dos symbolic name; Drive letter
+    WCHAR               DriveLetterBuffer[DRIVE_LETTER_BUFFER_SIZE];
+    WCHAR               DosDeviceNameBuffer[DOS_DEVNAME_BUFFER_SIZE];
+} DEVICE_EXTENSION, *PDEVICE_EXTENSION;
+
+WDF_DECLARE_CONTEXT_TYPE_WITH_NAME(DEVICE_EXTENSION, DeviceGetExtension)
+
+typedef struct _QUEUE_EXTENSION {
+    PDEVICE_EXTENSION DeviceExtension;
+} QUEUE_EXTENSION, *PQUEUE_EXTENSION;
+
+WDF_DECLARE_CONTEXT_TYPE_WITH_NAME(QUEUE_EXTENSION, QueueGetExtension)
+
+#pragma pack(1)
+
+typedef struct  _BOOT_SECTOR
+{
+    UCHAR       bsJump[3];          // x86 jmp instruction, checked by FS
+    CCHAR       bsOemName[8];       // OEM name of formatter
+    USHORT      bsBytesPerSec;      // Bytes per Sector
+    UCHAR       bsSecPerClus;       // Sectors per Cluster
+    USHORT      bsResSectors;       // Reserved Sectors
+    UCHAR       bsFATs;             // Number of FATs - we always use 1
+    USHORT      bsRootDirEnts;      // Number of Root Dir Entries
+    USHORT      bsSectors;          // Number of Sectors
+    UCHAR       bsMedia;            // Media type - we use RAMDISK_MEDIA_TYPE
+    USHORT      bsFATsecs;          // Number of FAT sectors
+    USHORT      bsSecPerTrack;      // Sectors per Track - we use 32
+    USHORT      bsHeads;            // Number of Heads - we use 2
+    ULONG       bsHiddenSecs;       // Hidden Sectors - we set to 0
+    ULONG       bsHugeSectors;      // Number of Sectors if > 32 MB size
+    UCHAR       bsDriveNumber;      // Drive Number - not used
+    UCHAR       bsReserved1;        // Reserved
+    UCHAR       bsBootSignature;    // New Format Boot Signature - 0x29
+    ULONG       bsVolumeID;         // VolumeID - set to 0x12345678
+    CCHAR       bsLabel[11];        // Label - set to RamDisk
+    CCHAR       bsFileSystemType[8];// File System Type - FAT12 or FAT16
+    CCHAR       bsReserved2[448];   // Reserved
+    UCHAR       bsSig2[2];          // Originial Boot Signature - 0x55, 0xAA
+}   BOOT_SECTOR, *PBOOT_SECTOR;
+
+typedef struct  _DIR_ENTRY
+{
+    UCHAR       deName[8];          // File Name
+    UCHAR       deExtension[3];     // File Extension
+    UCHAR       deAttributes;       // File Attributes
+    UCHAR       deReserved;         // Reserved
+    USHORT      deTime;             // File Time
+    USHORT      deDate;             // File Date
+    USHORT      deStartCluster;     // First Cluster of file
+    ULONG       deFileSize;         // File Length
+}   DIR_ENTRY, *PDIR_ENTRY;
+
+#pragma pack()
+
+//
+// Directory Entry Attributes
+//
+
+#define DIR_ATTR_READONLY   0x01
+#define DIR_ATTR_HIDDEN     0x02
+#define DIR_ATTR_SYSTEM     0x04
+#define DIR_ATTR_VOLUME     0x08
+#define DIR_ATTR_DIRECTORY  0x10
+#define DIR_ATTR_ARCHIVE    0x20
+
+DRIVER_INITIALIZE DriverEntry;
+
+#if KMDF_VERSION_MINOR >= 7
+
+EVT_WDF_DRIVER_DEVICE_ADD RamDiskEvtDeviceAdd;
+EVT_WDF_DEVICE_CONTEXT_CLEANUP RamDiskEvtDeviceContextCleanup;
+EVT_WDF_IO_QUEUE_IO_READ RamDiskEvtIoRead;
+EVT_WDF_IO_QUEUE_IO_WRITE RamDiskEvtIoWrite;
+EVT_WDF_IO_QUEUE_IO_DEVICE_CONTROL RamDiskEvtIoDeviceControl;
+
+#else
+
+NTSTATUS
+RamDiskEvtDeviceAdd(
+    IN WDFDRIVER Driver,
+    IN PWDFDEVICE_INIT DeviceInit
+    );
+
+VOID
+RamDiskEvtDeviceContextCleanup(
+    IN WDFOBJECT Device
+    );
+
+VOID
+RamDiskEvtIoRead(
+    IN WDFQUEUE Queue,
+    IN WDFREQUEST Request,
+    IN size_t Length
+    );
+
+VOID
+RamDiskEvtIoWrite(
+    IN WDFQUEUE Queue,
+    IN WDFREQUEST Request,
+    IN size_t Length
+    );
+
+VOID
+RamDiskEvtIoDeviceControl(
+    IN WDFQUEUE Queue,
+    IN WDFREQUEST Request,
+    IN size_t OutputBufferLength,
+    IN size_t InputBufferLength,
+    IN ULONG IoControlCode
+    );
+
+#endif
+
+VOID
+RamDiskQueryDiskRegParameters(
+    _In_ PWSTR RegistryPath,
+    _In_ PDISK_INFO DiskRegInfo
+    );
+
+NTSTATUS
+RamDiskFormatDisk(
+    IN PDEVICE_EXTENSION DeviceExtension
+    );
+
+BOOLEAN
+RamDiskCheckParameters(
+    IN PDEVICE_EXTENSION devExt,
+    IN LARGE_INTEGER ByteOffset,
+    IN size_t Length
+    );
+
+#endif    // _RAMDISK_H_
+