06da81f012
* Added {Create|Delete}Device() analogous to {Create|Delete}FileDevice
* Added a small DeviceWatcher class that reacts to entry creation/removal
* Implemented a way to start/stop node monitoring
* Start watching for devices after the boot volume has been mounted and the
the second initial scan was run
The disk device manager now creates and scans a device when a "raw" node is
published and deletes the device on removal. This makes hot-plugging of disk
devices (for example memory sticks using usb_disk) work. Their partitions will
be scanned and published so they can be mounted. Somehow the removal of the
partitions does not yet work however, any insights are welcome.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24777 a95241bf-73f2-0310-859d-f6bbb57e9c96
145 lines
4.1 KiB
C++
145 lines
4.1 KiB
C++
/*
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* Copyright 2004-2007, Haiku, Inc. All rights reserved.
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* Copyright 2003-2004, Ingo Weinhold, bonefish@cs.tu-berlin.de. All rights reserved.
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*
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _K_DISK_DEVICE_MANAGER_H
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#define _K_DISK_DEVICE_MANAGER_H
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#include <disk_device_manager.h>
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#include <Locker.h>
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namespace BPrivate {
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namespace DiskDevice {
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class KDiskDevice;
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class KDiskSystem;
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class KFileDiskDevice;
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class KPartition;
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class KDiskDeviceManager {
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public:
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KDiskDeviceManager();
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~KDiskDeviceManager();
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status_t InitCheck() const;
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// Singleton Creation, Deletion, and Access
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static status_t CreateDefault();
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static void DeleteDefault();
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static KDiskDeviceManager *Default();
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// Locking
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bool Lock();
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void Unlock();
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// Disk Device / Partition Management
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// manager must be locked
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KDiskDevice *FindDevice(const char *path);
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KDiskDevice *FindDevice(partition_id id, bool deviceOnly = true);
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KPartition *FindPartition(const char *path);
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KPartition *FindPartition(partition_id id);
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KFileDiskDevice *FindFileDevice(const char *filePath);
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KDiskDevice *RegisterDevice(const char *path);
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KDiskDevice *RegisterDevice(partition_id id, bool deviceOnly = true);
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KDiskDevice *RegisterNextDevice(int32 *cookie);
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KPartition *RegisterPartition(const char *path);
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KPartition *RegisterPartition(partition_id id);
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KFileDiskDevice *RegisterFileDevice(const char *filePath);
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KDiskDevice *ReadLockDevice(partition_id id, bool deviceOnly = true);
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KDiskDevice *WriteLockDevice(partition_id id, bool deviceOnly = true);
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// The device is also registered and must be unregistered by the
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// caller.
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KPartition *ReadLockPartition(partition_id id);
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KPartition *WriteLockPartition(partition_id id);
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// Both the device and the partition is also registered and must be
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// unregistered by the caller.
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status_t ScanPartition(KPartition* partition);
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partition_id CreateDevice(const char *path, bool *newlyCreated = NULL);
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status_t DeleteDevice(const char *path);
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partition_id CreateFileDevice(const char* filePath,
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bool* newlyCreated = NULL);
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status_t DeleteFileDevice(const char *filePath);
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status_t DeleteFileDevice(partition_id id);
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// manager must be locked
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int32 CountDevices();
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KDiskDevice *NextDevice(int32 *cookie);
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bool PartitionAdded(KPartition *partition); // implementation internal
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bool PartitionRemoved(KPartition *partition); //
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bool DeletePartition(KPartition *partition); //
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// Disk Systems
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// manager must be locked
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KDiskSystem *FindDiskSystem(const char *name, bool byPrettyName = false);
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KDiskSystem *FindDiskSystem(disk_system_id id);
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int32 CountDiskSystems();
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KDiskSystem *NextDiskSystem(int32 *cookie);
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KDiskSystem *LoadDiskSystem(const char *name, bool byPrettyName = false);
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KDiskSystem *LoadDiskSystem(disk_system_id id);
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KDiskSystem *LoadNextDiskSystem(int32 *cookie);
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status_t InitialDeviceScan();
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status_t RescanDiskSystems();
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status_t StartMonitoring();
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private:
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static status_t _CheckMediaStatusDaemon(void* self);
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status_t _CheckMediaStatus();
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status_t _RescanDiskSystems(bool fileSystems);
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status_t _AddPartitioningSystem(const char *name);
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status_t _AddFileSystem(const char *name);
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status_t _AddDiskSystem(KDiskSystem *diskSystem);
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bool _AddDevice(KDiskDevice *device);
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bool _RemoveDevice(KDiskDevice *device);
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status_t _Scan(const char *path);
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status_t _ScanPartition(KPartition *partition, bool async);
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// the manager must be locked and the device write locked
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status_t _ScanPartition(KPartition *partition);
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// used by the other _ScanPartition() version only
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status_t _AddRemoveMonitoring(const char *path, bool add);
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struct DeviceMap;
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struct DiskSystemMap;
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struct PartitionMap;
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struct PartitionSet;
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class DeviceWatcher;
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BLocker fLock;
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DeviceMap *fDevices;
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PartitionMap *fPartitions;
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DiskSystemMap *fDiskSystems;
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PartitionSet *fObsoletePartitions;
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thread_id fMediaChecker;
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volatile bool fTerminating;
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DeviceWatcher *fDeviceWatcher;
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static KDiskDeviceManager *sDefaultManager;
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};
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} // namespace DiskDevice
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} // namespace BPrivate
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using BPrivate::DiskDevice::KDiskDeviceManager;
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#endif // _K_DISK_DEVICE_MANAGER_H
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