Headers for the disk device manager. Very early state.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3454 a95241bf-73f2-0310-859d-f6bbb57e9c96
2003-06-09 23:04:54 +00:00
parent bef8916ea6
commit 4c212afefb
12 changed files with 1047 additions and 0 deletions
@@ -0,0 +1,113 @@
+// KDiskSystem.h
+
+#ifndef _K_DISK_DEVICE_SYSTEM_H
+#define _K_DISK_DEVICE_SYSTEM_H
+
+#include "disk_device_manager.h"
+
+namespace BPrivate {
+namespace DiskDevice {
+
+class KDiskDeviceJob;
+class KPartition;
+
+class KDiskSystem {
+	KDiskSystem(const char *name);
+	virtual ~KDiskSystem();
+
+	void SetID(disk_system_id id);
+	disk_system_id ID() const;
+	const char *Name() const;
+		// We might want to introduce another name -- a more user friendly one.
+		// This one is the name of the partition module/FS add-on, e.g.
+		// "intel/extended", "bfs".
+
+	virtual bool IsFileSystem() const;
+	bool IsPartitioningSystem() const;
+
+	virtual status_t Load();		// load/unload -- can be nested
+	virtual status_t Unload();		//
+	virtual bool IsLoaded() const;
+
+	// Scanning
+	// Device must be write locked.
+
+	virtual float Identify(KPartition *partition, void **cookie);
+	virtual status_t Scan(KPartition *partition, void *cookie);
+	virtual void FreeIdentifyCookie(KPartition *partition, void *cookie);
+	virtual void FreeCookie(KPartition *partition);
+	virtual void FreeContentCookie(KPartition *partition);
+
+	// Querying
+	// Device must be read locked.
+
+	virtual bool SupportsDefragmenting(KPartition *partition,
+									   bool *whileMounted);
+	virtual bool SupportsRepairing(KPartition *partition, bool checkOnly,
+								   bool *whileMounted);
+	virtual bool SupportsResizing(KPartition *partition, bool *whileMounted);
+	virtual bool SupportsResizingChild(KPartition *child);
+	virtual bool SupportsMoving(KPartition *partition, bool *whileMounted);
+	virtual bool SupportsMovingChild(KPartition *child);
+	virtual bool SupportsParentSystem(KDiskSystem *system);
+	virtual bool SupportsChildSystem(KDiskSystem *system);
+
+	virtual bool ValidateResize(KPartition *partition, off_t *size);
+	virtual bool ValidateMove(KPartition *partition, off_t *start);
+	virtual bool ValidateResizeChild(KPartition *partition, off_t *size);
+	virtual bool ValidateMoveChild(KPartition *partition, off_t *start);
+	virtual bool ValidateCreateChild(KPartition *partition, off_t *start,
+									 off_t *size, const char *parameters);
+	virtual bool ValidateInitialize(KPartition *partition,
+									const char *parameters);
+	virtual bool ValidateSetParameters(KPartition *partition,
+									   const char *parameters);
+	virtual bool ValidateSetContentParameters(KPartition *child,
+											  const char *parameters);
+	virtual int32 CountPartitionableSpaces(KPartition *partition);
+	virtual bool GetPartitionableSpaces(KPartition *partition,
+										partitionable_space_data *spaces,
+										int32 count,
+										int32 *actualCount = NULL);
+
+	// Writing
+	// Device should not be locked.
+
+	virtual status_t Defragment(KPartition *partition, KDiskDeviceJob *job);
+	virtual status_t Repair(KPartition *partition, bool checkOnly,
+							KDiskDeviceJob *job);
+	virtual status_t Resize(KPartition *partition, off_t size,
+							KDiskDeviceJob *job);
+	virtual status_t ResizeChild(KPartition *child, off_t size,
+								 KDiskDeviceJob *job);
+	virtual status_t Move(KPartition *partition, off_t offset,
+						  KDiskDeviceJob *job);
+	virtual status_t MoveChild(KPartition *child, off_t offset,
+							   KDiskDeviceJob *job);
+	virtual status_t CreateChild(KPartition *partition, off_t offset,
+								 off_t size, const char *parameters,
+								 KDiskDeviceJob *job,
+								 KPartition **child = NULL,
+								 partition_id childID = -1);
+		// optional childID parameter or allow setting the ID later?
+	virtual status_t DeleteChild(KPartition *child, KDiskDeviceJob *job);
+	virtual status_t Initialize(KPartition *partition, const char *parameters,
+								KDiskDeviceJob *job);
+	virtual status_t SetParameters(KPartition *partition,
+								   const char *parameters,
+								   KDiskDeviceJob *job);
+	virtual status_t SetContentParameters(KPartition *partition,
+										  const char *parameters,
+										  KDiskDeviceJob *job);
+// The KPartition* parameters for the writing methods are a bit `volatile',
+// since the device will not be locked, when they are called. The KPartition
+// is registered though, so that it is at least guaranteed that the object
+// won't go away.
+};
+
+} // namespace DiskDevice
+} // namespace BPrivate
+
+using BPrivate::DiskDevice::KDiskSystem;
+
+#endif	// _K_DISK_DEVICE_SYSTEM_H