FileSystemStore for Secure Store. More...

#include <FileSystemStore.h>

Public Types
typedef struct mbed::KVStore::info	info_t
	Holds key information.
Public Member Functions
	FileSystemStore (FileSystem *fs)
	Create FileSystemStore - A Key Value API on top of FS.
virtual	~FileSystemStore ()
	Destroy FileSystemStore instance.
virtual int	init ()
	Initialize FileSystemStore, checking validity of KVStore writing folder and if it doesn't exist, creating it.
virtual int	deinit ()
	Deinitialize FileSystemStore, release and free resources.
virtual int	reset ()
	Reset FileSystemStore contents (clear all keys)
virtual int	set (const char key, const void buffer, size_t size, uint32_t create_flags)
	Set one FileSystemStore item, given key and value.
virtual int	get (const char key, void buffer, size_t buffer_size, size_t *actual_size=NULL, size_t offset=0)
	Get one FileSystemStore item by given key.
virtual int	get_info (const char key, info_t info)
	Get information of a given key.
virtual int	remove (const char *key)
	Remove a FileSystemStore item by given key.
virtual int	set_start (set_handle_t handle, const char key, size_t final_data_size, uint32_t create_flags)
	Start an incremental FileSystemStore set sequence.
virtual int	set_add_data (set_handle_t handle, const void *value_data, size_t data_size)
	Add data to incremental FileSystemStore set sequence.
virtual int	set_finalize (set_handle_t handle)
	Finalize an incremental FileSystemStore set sequence.
virtual int	iterator_open (iterator_t it, const char prefix=NULL)
	Start an iteration over FileSystemStore keys.
virtual int	iterator_next (iterator_t it, char *key, size_t key_size)
	Get next key in iteration.
virtual int	iterator_close (iterator_t it)
	Close iteration.
virtual int	set_start (set_handle_t handle, const char key, size_t final_data_size, uint32_t create_flags)=0
	Start an incremental KVStore set sequence.
virtual int	set_add_data (set_handle_t handle, const void *value_data, size_t data_size)=0
	Add data to incremental KVStore set sequence.
virtual int	set_finalize (set_handle_t handle)=0
	Finalize an incremental KVStore set sequence.
bool	is_valid_key (const char *key) const
	Convenience function for checking key validity.

Detailed Description

FileSystemStore for Secure Store.

This class implements the KVStore interface to create a key value store over FileSystem.

...

Definition at line 34 of file FileSystemStore.h.

Member Typedef Documentation

typedef struct mbed::KVStore::info info_t [inherited]

Holds key information.

Constructor & Destructor Documentation

FileSystemStore ( FileSystem * fs )

Create FileSystemStore - A Key Value API on top of FS.

Parameters:

fs	File system (FAT/LITTLE) on top of which FileSystemStore is adding KV API

Definition at line 66 of file FileSystemStore.cpp.

virtual ~FileSystemStore ( ) [virtual]

Destroy FileSystemStore instance.

Definition at line 46 of file FileSystemStore.h.

Member Function Documentation

int deinit ( ) [virtual]

Deinitialize FileSystemStore, release and free resources.

Returns:: MBED_SUCCESS Success.

Implements KVStore.

Definition at line 118 of file FileSystemStore.cpp.

int get	(	const char *	key,
		void *	buffer,
		size_t	buffer_size,
		size_t *	actual_size = `NULL`,
		size_t	offset = `0`
	)		`[virtual]`

Get one FileSystemStore item by given key.

Parameters:

[in]	key	Key - must not include '*' '/' '?' ':' ';' '\' '"' '\|' ' ' '<' '>' '\'.
[in]	buffer	Value data buffer.
[in]	buffer_size	Value data buffer size.
[out]	actual_size	Actual read size.
[in]	offset	Offset to read from in data.

Returns:: MBED_SUCCESS Success. MBED_ERROR_NOT_READY Not initialized. MBED_ERROR_FAILED_OPERATION Underlying file system failed operation. MBED_ERROR_INVALID_ARGUMENT Invalid argument given in function arguments. MBED_ERROR_INVALID_SIZE Invalid size given in function arguments. MBED_ERROR_INVALID_DATA_DETECTED Data is corrupted. MBED_ERROR_ITEM_NOT_FOUND No such key.

Implements KVStore.

Definition at line 198 of file FileSystemStore.cpp.

int get_info	(	const char *	key,
		info_t *	info
	)		`[virtual]`

Get information of a given key.

The returned info contains size and flags

Parameters:

[in]	key	Key - must not include '*' '/' '?' ':' ';' '\' '"' '\|' ' ' '<' '>' '\'.
[out]	info	Returned information structure.

Returns:: MBED_SUCCESS Success. MBED_ERROR_NOT_READY Not initialized. MBED_ERROR_FAILED_OPERATION Underlying file system failed operation. MBED_ERROR_INVALID_ARGUMENT Invalid argument given in function arguments. MBED_ERROR_INVALID_SIZE Invalid size given in function arguments. MBED_ERROR_INVALID_DATA_DETECTED Data is corrupted. MBED_ERROR_ITEM_NOT_FOUND No such key.

Implements KVStore.

Definition at line 253 of file FileSystemStore.cpp.

int init ( ) [virtual]

Initialize FileSystemStore, checking validity of KVStore writing folder and if it doesn't exist, creating it.

Returns:: MBED_SUCCESS Success. MBED_ERROR_FAILED_OPERATION Underlying file system failed operation.

Implements KVStore.

Definition at line 73 of file FileSystemStore.cpp.

bool is_valid_key ( const char * key ) const [inherited]

Convenience function for checking key validity.

Key must not include '*' '/' '?' ':' ';' '\' '"' '|' ' ' '<' '>' '\'.

Parameters:

[in] key Key buffer.

Returns:: MBED_SUCCESS on success or an error code on failure

Definition at line 200 of file KVStore.h.

int iterator_close ( iterator_t it ) [virtual]

Close iteration.

Parameters:

[in] it Iterator handle.

Returns:: MBED_SUCCESS Success. MBED_ERROR_NOT_READY Not initialized. MBED_ERROR_INVALID_ARGUMENT Invalid argument given in function arguments.

Implements KVStore.

Definition at line 568 of file FileSystemStore.cpp.

int iterator_next	(	iterator_t	it,
		char *	key,
		size_t	key_size
	)		`[virtual]`

Get next key in iteration.

There are no issues with any other operations while iterator is open.

Parameters:

[in]	it	Iterator handle.
[in]	key	Buffer for returned key.
[in]	key_size	Key buffer size.

Returns:: MBED_SUCCESS Success. MBED_ERROR_NOT_READY Not initialized. MBED_ERROR_INVALID_ARGUMENT Invalid argument given in function arguments. MBED_ERROR_ITEM_NOT_FOUND No more keys found.

Implements KVStore.

Definition at line 519 of file FileSystemStore.cpp.

int iterator_open	(	iterator_t *	it,
		const char *	prefix = `NULL`
	)		`[virtual]`

Start an iteration over FileSystemStore keys.

There are no issues with any other operations while iterator is open.

Parameters:

[out]	it	Returned iterator handle.
[in]	prefix	Key prefix (null for all keys).

Returns:: MBED_SUCCESS Success. MBED_ERROR_NOT_READY Not initialized. MBED_ERROR_INVALID_ARGUMENT Invalid argument given in function arguments.

Implements KVStore.

Definition at line 475 of file FileSystemStore.cpp.

int remove ( const char * key ) [virtual]

Remove a FileSystemStore item by given key.

Parameters:

[in] key Key - must not include '*' '/' '?' ':' ';' '\' '"' '|' ' ' '<' '>' '\'.

Returns:: MBED_SUCCESS Success. MBED_ERROR_NOT_READY Not initialized. MBED_ERROR_FAILED_OPERATION Underlying file system failed operation. MBED_ERROR_INVALID_ARGUMENT Invalid argument given in function arguments. MBED_ERROR_ITEM_NOT_FOUND No such key. MBED_ERROR_WRITE_PROTECTED Already stored with "write once" flag.

Implements KVStore.

Definition at line 287 of file FileSystemStore.cpp.

int reset ( void ) [virtual]

Reset FileSystemStore contents (clear all keys)

Returns:: MBED_SUCCESS Success. MBED_ERROR_NOT_READY Not initialized. MBED_ERROR_FAILED_OPERATION Underlying file system failed operation.

Implements KVStore.

Definition at line 129 of file FileSystemStore.cpp.

int set	(	const char *	key,
		const void *	buffer,
		size_t	size,
		uint32_t	create_flags
	)		`[virtual]`

Set one FileSystemStore item, given key and value.

Parameters:

[in]	key	Key - must not include '*' '/' '?' ':' ';' '\' '"' '\|' ' ' '<' '>' '\'.
[in]	buffer	Value data buffer.
[in]	size	Value data size.
[in]	create_flags	Flag mask.

Returns:: MBED_SUCCESS Success. MBED_ERROR_NOT_READY Not initialized. MBED_ERROR_FAILED_OPERATION Underlying file system failed operation. MBED_ERROR_INVALID_ARGUMENT Invalid argument given in function arguments. MBED_ERROR_INVALID_SIZE Invalid size given in function arguments. MBED_ERROR_WRITE_PROTECTED Already stored with "write once" flag.

Implements KVStore.

Definition at line 159 of file FileSystemStore.cpp.

virtual int set_add_data	(	set_handle_t	handle,
		const void *	value_data,
		size_t	data_size
	)		`[pure virtual, inherited]`

Add data to incremental KVStore set sequence.

Parameters:

[in]	handle	Incremental set handle.
[in]	value_data	Value data to add.
[in]	data_size	Value data size.

Returns:: MBED_SUCCESS on success or an error code on failure

Implemented in SecureStore, and TDBStore.

virtual int set_add_data	(	set_handle_t	handle,
		const void *	value_data,
		size_t	data_size
	)		`[virtual]`

Add data to incremental FileSystemStore set sequence.

This operation is blocking other operations. Any get/set/remove operation will be blocked until set_finalize is called.

Parameters:

[in]	handle	Incremental set handle.
[in]	value_data	Value data to add.
[in]	data_size	Value data size.

Returns:: MBED_SUCCESS Success. MBED_ERROR_NOT_READY Not initialized. MBED_ERROR_FAILED_OPERATION Underlying file system failed operation. MBED_ERROR_INVALID_ARGUMENT Invalid argument given in function arguments. MBED_ERROR_INVALID_SIZE Invalid size given in function arguments. MBED_ERROR_WRITE_PROTECTED Already stored with "write once" flag.

virtual int set_finalize ( set_handle_t handle ) [virtual]

Finalize an incremental FileSystemStore set sequence.

Parameters:

[in] handle Incremental set handle.

Returns:: MBED_SUCCESS Success. MBED_ERROR_NOT_READY Not initialized. MBED_ERROR_FAILED_OPERATION Underlying file system failed operation. MBED_ERROR_INVALID_ARGUMENT Invalid argument given in function arguments.

virtual int set_finalize ( set_handle_t handle ) [pure virtual, inherited]

Finalize an incremental KVStore set sequence.

Parameters:

[in] handle Incremental set handle.

Returns:: MBED_SUCCESS on success or an error code on failure

Implemented in SecureStore, and TDBStore.

virtual int set_start	(	set_handle_t *	handle,
		const char *	key,
		size_t	final_data_size,
		uint32_t	create_flags
	)		`[pure virtual, inherited]`

Start an incremental KVStore set sequence.

Parameters:

[out]	handle	Returned incremental set handle.
[in]	key	Key - must not include '*' '/' '?' ':' ';' '\' '"' '\|' ' ' '<' '>' '\'.
[in]	final_data_size	Final value data size.
[in]	create_flags	Flag mask.

Returns:: MBED_SUCCESS on success or an error code on failure

Implemented in SecureStore, and TDBStore.

virtual int set_start	(	set_handle_t *	handle,
		const char *	key,
		size_t	final_data_size,
		uint32_t	create_flags
	)		`[virtual]`

Start an incremental FileSystemStore set sequence.

This operation is blocking other operations. Any get/set/remove/iterator operation will be blocked until set_finalize is called.

Parameters:

[out]	handle	Returned incremental set handle.
[in]	key	Key - must not include '*' '/' '?' ':' ';' '\' '"' '\|' ' ' '<' '>' '\'.
[in]	final_data_size	Final value data size.
[in]	create_flags	Flag mask.

Returns:: MBED_SUCCESS Success. MBED_ERROR_NOT_READY Not initialized. MBED_ERROR_FAILED_OPERATION Underlying file system failed operation. MBED_ERROR_INVALID_ARGUMENT Invalid argument given in function arguments. MBED_ERROR_INVALID_SIZE Invalid size given in function arguments. MBED_ERROR_WRITE_PROTECTED Already stored with "write once" flag.

Type:	Library
Created:	17 Dec 2019
Imports:	79
Forks:	0
Commits:	2
Dependents:	2
Dependencies:	0
Followers:	1

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