57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
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// KDiskDevice.h
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#ifndef _K_DISK_DEVICE_H
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#define _K_DISK_DEVICE_H
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#include <OS.h>
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#include "KPartition.h"
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namespace BPrivate {
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namespace DiskDevice {
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class KDiskDevice : public KPartition {
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KDiskDevice(partition_id id = -1);
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virtual ~KDiskDevice();
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// A read lock owner can be sure that the device (incl. all of its
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// partitions won't be changed).
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// A write lock owner is moreover allowed to make changes.
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// The hierarchy is additionally protected by the disk device manager's
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// lock -- only a device write lock owner is allowed to change it, but
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// manager lock owners can be sure, that it won't change.
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bool ReadLock();
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void ReadUnlock();
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bool WriteLock();
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void WriteUnlock();
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void SetDeviceFlags(uint32 flags); // comprises the ones below
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uint32 DeviceFlags() const;
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bool IsRemovable() const;
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bool HasMedia() const;
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status_t SetPath(const char *path);
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virtual status_t GetPath(char *path) const;
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// File descriptor: Set only from a kernel thread, valid only for
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// kernel threads.
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void SetFD(int fd);
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int FD() const;
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// access to C style device data
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disk_device_data *DeviceData();
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const disk_device_data *DeviceData() const;
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virtual KPartition *CreateShadowPartition();
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void SetShadowOwner(team_id team);
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team_id ShadowOwner() const;
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};
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} // namespace DiskDevice
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} // namespace BPrivate
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using BPrivate::DiskDevice::KDiskDevice;
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#endif // _K_DISK_DEVICE_H
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