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 +1,157 @@
+// KPartition.h
+
+#ifndef _K_DISK_DEVICE_PARTITION_H
+#define _K_DISK_DEVICE_PARTITION_H
+
+#include "disk_device_manager.h"
+#include "List.h"
+
+namespace BPrivate {
+namespace DiskDevice {
+
+class KDiskDevice;
+class KDiskSystem;
+
+// partition flags
+// TODO: move to another header (must be accessible from userland API impl.)
+enum {
+	B_PARTITION_IS_DEVICE		= 0x01,
+	B_PARTITION_MOUNTABLE		= 0x02,
+	B_PARTITION_PARTITIONABLE	= 0x04,
+	B_PARTITION_READ_ONLY		= 0x08,
+	B_PARTITION_MOUNTED			= 0x10,	// needed?
+	B_PARTITION_BUSY			= 0x20,
+	B_PARTITION_DESCENDANT_BUSY	= 0x40,
+};
+
+class KPartition {
+	KPartition(partition_id id = -1);
+	virtual ~KPartition();
+
+	// Reference counting. As long as there's at least one referrer, the
+	// object won't be deleted.
+	// manager must be locked
+	bool Register();
+	bool Unregister();
+	int32 CountReferences() const;
+
+	void SetBusy(bool busy);
+	bool IsBusy() const;
+		// == jobs which may affect this partition are scheduled/in progress
+	void SetDescendantBusy(bool busy);
+	bool IsDescendantBusy() const;
+		// == jobs which may affect a descendant of this partition are
+		// scheduled/in progress; IsBusy() => IsDescendantBusy()
+		// In the userland API, both can probably mapped to one flag.
+
+	void SetOffset(off_t offset);
+	off_t Offset() const;		// 0 for devices
+
+	void SetSize(off_t size);
+	off_t Size() const;
+
+	void SetBlockSize(uint32 blockSize);
+	uint32 BlockSize() const;
+
+	void SetIndex(int32 index);
+	int32 Index() const;		// 0 for devices
+
+	void SetStatus(uint32 status);
+	uint32 Status() const;
+	
+	void SetFlags(uint32 flags);	// comprises the ones below
+	uint32 Flags() const;
+	bool IsMountable() const;
+	bool IsPartitionable() const;
+	bool IsReadOnly() const;
+	bool IsMounted() const;
+
+	bool IsDevice() const;
+
+	status_t SetName(const char *name);
+	const char *Name() const;
+
+	status_t SetContentName(const char *name);
+	const char *ContentName() const;
+
+	status_t SetType(const char *type);
+	const char *Type() const;
+
+	status_t SetContentType(const char *type);
+	const char *ContentType() const;
+
+	// access to C style partition data
+	partition_data *PartitionData();
+	const partition_data *PartitionData() const;
+
+	void SetID(partition_id id);
+	partition_id ID() const;
+
+	int32 ChangeCounter() const;
+	
+	virtual status_t GetPath(char *path) const;
+		// no setter (see BDiskDevice) -- built on the fly
+
+	void SetVolumeID(dev_t volumeID);
+	dev_t VolumeID() const;
+
+	status_t Mount(uint32 mountFlags, const char *parameters);
+	status_t Unmount();
+
+	// Parameters
+
+	status_t SetParameters(const char *parameters);
+	const char *Parameters() const;
+
+	status_t SetContentParameters(const char *parameters);
+	const char *ContentParameters() const;
+
+	// Hierarchy
+
+	void SetDevice(KDiskDevice *device);
+	KDiskDevice *Device() const;
+
+	void SetParent(KPartition *parent);
+	KPartition *Parent() const;
+
+	status_t AddChild(KPartition *partition, int32 index = -1);
+	KPartition *RemoveChild(int32 index);
+	KPartition *ChildAt(int32 index) const;
+	int32 CountChildren() const;
+
+	// Shadow Partition
+
+	virtual KPartition *CreateShadowPartition();	// creates a complete tree
+	void DeleteShadowPartition();					// deletes ...
+	KPartition *ShadowPartition() const;
+	bool IsShadowPartition() const;
+
+	// DiskSystem
+
+	void SetDiskSystem(KDiskSystem *diskSystem);
+	KDiskSystem *DiskSystem() const;
+	void SetParentDiskSystem(KDiskSystem *diskSystem);
+	KDiskSystem *ParentDiskSystem() const;
+
+	void SetCookie(void *cookie);
+	void *Cookie() const;
+
+	void SetContentCookie(void *cookie);
+	void *ContentCookie() const;
+
+protected:
+	partition_data		fPartitionData;
+	List<KPartition*>	fChildren;
+	KDiskDevice			*fDevice;
+	KPartition			*fParent;
+	KDiskSystem			*fDiskSystem;
+	KDiskSystem			*fParentDiskSystem;
+	int32				fReferenceCount;
+};
+
+} // namespace DiskDevice
+} // namespace BPrivate
+
+using BPrivate::DiskDevice::KPartition;
+
+#endif	// _K_DISK_DEVICE_PARTITION_H