src/add-ons/kernel/partitioning_systems/intel/PartitionLocker.h

   1 /*
   2  * Copyright 2003-2007, Haiku, Inc. All Rights Reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Tomas Kucera, kucerat@centrum.cz
   7  */
   8
   9 /*!
  10         \file PartitionLocker.h
  11         \ingroup intel_module
  12         \brief Structures for easy locking and automatic unlocking partitions.
  13  */
  14
  15 #ifndef _PARTITION_LOCKER_H
  16 #define _PARTITION_LOCKER_H
  17
  18 #include <disk_device_manager.h>
  19
  20
  21 class PartitionLocker {
  22 public:
  23         PartitionLocker(partition_id partitionID);
  24         ~PartitionLocker();
  25
  26         bool IsLocked() const;
  27         partition_id PartitionId() const;
  28
  29 protected:
  30         const disk_device_data* fDevice;
  31
  32 private:
  33         partition_id                    fPartitionID;
  34 };
  35
  36
  37 /*!
  38   \brief Structure which locks given partition for reading.
  39
  40   When this structure is going to be destroyed, it automatically unlocks
  41   that partition.
  42 */
  43 class PartitionReadLocker : public PartitionLocker {
  44 public:
  45         PartitionReadLocker(partition_id partitionID);
  46         ~PartitionReadLocker();
  47 };
  48
  49
  50 /*!
  51   \brief Structure which locks given partition for writing.
  52
  53   When this structure is going to be destroyed, it automatically unlocks
  54   that partition.
  55 */
  56 class PartitionWriteLocker : public PartitionLocker {
  57 public:
  58         PartitionWriteLocker(partition_id partitionID);
  59         ~PartitionWriteLocker();
  60 };
  61
  62
  63 #endif  // _PARTITION_LOCKER_H