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https://review.haiku-os.org/haiku
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91 lines
2.8 KiB
C
91 lines
2.8 KiB
C
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// DiskDeviceRoster.h
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#ifndef _DISK_DEVICE_ROSTER_H
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#define _DISK_DEVICE_ROSTER_H
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#include <DiskDeviceVisitor.h>
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#include <SupportDefs.h>
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class BDiskDevice;
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class BPartition;
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class BSession;
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// watchable events
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enum {
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B_DEVICE_REQUEST_MOUNT_POINT = 0x01, // mount point changes
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B_DEVICE_REQUEST_MOUNTING = 0x02, // mounting/unmounting
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B_DEVICE_REQUEST_PARTITION = 0x04, // partition changes (initial.)
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B_DEVICE_REQUEST_SESSION = 0x08, // session changes (partitioning)
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B_DEVICE_REQUEST_DEVICE = 0x10, // device changes (media changes)
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B_DEVICE_REQUEST_DEVICE_LIST = 0x20, // device additions/removals
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B_DEVICE_REQUEST_ALL = 0xff, // all events
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};
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// notification message "what" field
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// TODO: move to app/AppDefs.h
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enum {
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B_DEVICE_UPDATE = 'DUPD'
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};
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// notification message "event" field values
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enum {
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B_DEVICE_MOUNT_POINT_MOVED, // mount point moved/renamed
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B_DEVICE_PARTITION_MOUNTED, // partition mounted
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B_DEVICE_PARTITION_UNMOUNTED, // partition unmounted
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B_DEVICE_PARTITION_CHANGED, // partition changed, e.g. initialized
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// or resized
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B_DEVICE_PARTITION_ADDED, // partition added
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B_DEVICE_PARTITION_REMOVED, // partition removed
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B_DEVICE_MEDIA_CHANGED, // media changed
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B_DEVICE_ADDED, // device added
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B_DEVICE_REMOVED // device removed
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};
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class BDiskDeviceRoster {
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public:
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BDiskDeviceRoster();
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~BDiskDeviceRoster();
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status_t GetNextDevice(BDiskDevice *device);
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status_t Rewind();
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bool VisitEachDevice(BDiskDeviceVisitor *visitor,
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BDiskDevice *device = NULL);
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// return true if terminated early
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bool VisitEachPartition(BDiskDeviceVisitor *visitor,
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BDiskDevice *device = NULL,
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BPartition **partition = NULL);
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// return true if terminated early
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bool Traverse(BDiskDeviceVisitor *visitor);
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// return true if terminated early
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bool VisitEachMountedPartition(BDiskDeviceVisitor *visitor,
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BDiskDevice *device = NULL,
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BPartition **partition = NULL);
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// return true if terminated early
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bool VisitEachMountablePartition(BDiskDeviceVisitor *visitor,
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BDiskDevice *device = NULL,
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BPartition **partition = NULL);
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// return true if terminated early
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bool VisitEachInitializablePartition(BDiskDeviceVisitor *visitor,
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BDiskDevice *device = NULL,
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BPartition **partition = NULL);
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// return true if terminated early
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BDiskDevice *DeviceWithID(int32 id) const;
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BSession *SessionWithID(int32 id, BDiskDevice *device) const;
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// inits device to the device containing the session
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BPartition *PartitionWithID(int32 id, BDiskDevice *device) const;
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// inits device to the device containing the partition
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status_t StartWatching(BMessenger target,
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uint32 eventMask = B_DEVICE_REQUEST_ALL);
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status_t StopWatching(BMessenger target);
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private:
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int32 fDeviceID; // iteration state
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};
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#endif // _DISK_DEVICE_ROSTER_H
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