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

   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 #include "PartitionLocker.h"
  11
  12
  13 //      #pragma mark - PartitionLocker
  14
  15
  16 PartitionLocker::PartitionLocker(partition_id partitionID)
  17         :
  18         fDevice(NULL),
  19         fPartitionID(partitionID)
  20 {
  21 }
  22
  23
  24 PartitionLocker::~PartitionLocker()
  25 {
  26 }
  27
  28
  29 bool
  30 PartitionLocker::IsLocked() const
  31 {
  32         return fDevice != NULL;
  33 }
  34
  35
  36 partition_id
  37 PartitionLocker::PartitionId() const
  38 {
  39         return fPartitionID;
  40 }
  41
  42
  43 //      #pragma mark - PartitionReadLocker
  44
  45
  46 PartitionReadLocker::PartitionReadLocker(partition_id partitionID)
  47         :
  48         PartitionLocker(partitionID)
  49 {
  50         fDevice = read_lock_disk_device(partitionID);
  51 }
  52
  53
  54 PartitionReadLocker::~PartitionReadLocker()
  55 {
  56         if (IsLocked())
  57                 read_unlock_disk_device(PartitionId());
  58 }
  59
  60
  61 //      #pragma mark - PartitionWriteLocker
  62
  63
  64 PartitionWriteLocker::PartitionWriteLocker(partition_id partitionID)
  65         :
  66         PartitionLocker(partitionID)
  67 {
  68         fDevice = write_lock_disk_device(partitionID);
  69 }
  70
  71
  72 PartitionWriteLocker::~PartitionWriteLocker()
  73 {
  74         if (IsLocked())
  75                 write_unlock_disk_device(PartitionId());
  76 }