IFS implementation of Host filing system. More...

#include <FileSystem.h>

Inheritance diagram for IFS::Host::FileSystem:

Collaboration diagram for IFS::Host::FileSystem:

Public Member Functions
	FileSystem ()

	~FileSystem () override

int	mount () override
	Mount file system, performing any required initialisation. More...

int	getinfo (Info &info) override
	get filing system information More...

String	getErrorString (int err) override
	get the text for a returned error code More...

int	opendir (const char *path, DirHandle &dir) override
	open a directory for reading More...

int	rewinddir (DirHandle dir) override
	Reset directory read position to start. More...

int	readdir (DirHandle dir, Stat &stat) override
	read a directory entry More...

int	closedir (DirHandle dir) override
	close a directory object More...

int	mkdir (const char *path) override
	Create a directory. More...

int	stat (const char path, Stat stat) override
	get file information More...

int	fstat (FileHandle file, Stat *stat) override
	get file information More...

int	setacl (FileHandle file, const ACL &acl) override
	Set access control information for file. More...

int	setattr (const char *path, FileAttributes attr) override
	Set file attributes. More...

int	settime (FileHandle file, time_t mtime) override
	Set modificatino tiem for file. More...

int	setcompression (FileHandle file, const Compression &compression) override
	Set file compression information. More...

FileHandle	open (const char *path, OpenFlags flags) override
	open a file by name/path More...

FileHandle	fopen (const Stat &stat, OpenFlags flags) override
	open a file from it's stat structure More...

int	close (FileHandle file) override
	close an open file More...

int	read (FileHandle file, void *data, size_t size) override
	read content from a file and advance cursor More...

int	write (FileHandle file, const void *data, size_t size) override
	write content to a file at current position and advance cursor More...

int	lseek (FileHandle file, int offset, SeekOrigin origin) override
	change file read/write position More...

int	eof (FileHandle file) override
	determine if current file position is at end of file More...

int32_t	tell (FileHandle file) override
	get current file position More...

int	ftruncate (FileHandle file, size_t new_size) override
	Truncate (reduce) the size of an open file. More...

int	flush (FileHandle file) override
	flush any buffered data to physical media More...

int	rename (const char oldpath, const char newpath) override
	rename a file More...

int	remove (const char *path) override
	remove (delete) a file by path More...

int	fremove (FileHandle file) override
	remove (delete) a file by handle More...

int	format () override
	format the filing system More...

int	check () override
	Perform a file system consistency check. More...

Public Member Functions inherited from IFS::IFileSystem
virtual	~IFileSystem ()
	Filing system implementations should dismount and cleanup here. More...

virtual int	fopendir (const Stat *stat, DirHandle &dir)
	open a directory for reading More...

virtual int	fcontrol (FileHandle file, ControlCode code, void *buffer, size_t bufSize)
	Low-level and non-standard file control operations. More...

Additional Inherited Members
Public Types inherited from IFS::IFileSystem
enum	Type { Type::XX, Type::MAX }

enum	Attribute { Attribute::XX, Attribute::MAX }

using	Attributes = BitSet< uint8_t, Attribute, size_t(Attribute::MAX)>

Detailed Description

IFS implementation of Host filing system.

Constructor & Destructor Documentation

◆ FileSystem()

IFS::Host::FileSystem::FileSystem ( )

inline

◆ ~FileSystem()

IFS::Host::FileSystem::~FileSystem ( )

inlineoverride

Member Function Documentation

◆ check()

int IFS::Host::FileSystem::check ( )

inlineoverridevirtual

Perform a file system consistency check.

Return values

int	error code

Note: if possible, issues should be resolved. Returns 0 if file system checked out OK. Otherwise there were issues: < 0 for unrecoverable errors,

0 for recoverable errors.

Reimplemented from IFS::IFileSystem.

◆ close()

int IFS::Host::FileSystem::close ( FileHandle file )

overridevirtual

close an open file

Parameters

file	handle to open file

Return values

int	error code

Implements IFS::IFileSystem.

◆ closedir()

int IFS::Host::FileSystem::closedir ( DirHandle dir )

overridevirtual

close a directory object

Parameters

dir	directory to close

Return values

int	error code

Implements IFS::IFileSystem.

◆ eof()

int IFS::Host::FileSystem::eof ( FileHandle file )

overridevirtual

determine if current file position is at end of file

Parameters

file	handle to open file

Return values

int	0 - not EOF, > 0 - at EOF, < 0 - error

Implements IFS::IFileSystem.

◆ flush()

int IFS::Host::FileSystem::flush ( FileHandle file )

inlineoverridevirtual

flush any buffered data to physical media

Parameters

file	handle to open file

Return values

int	error code

Implements IFS::IFileSystem.

◆ fopen()

FileHandle IFS::Host::FileSystem::fopen	(	const Stat &	stat,
		OpenFlags	flags
	)

overridevirtual

open a file from it's stat structure

Parameters

stat	obtained from readdir()
flags	opens for opening file

Return values

FileHandle file handle or error code

Implements IFS::IFileSystem.

◆ format()

int IFS::Host::FileSystem::format ( )

inlineoverridevirtual

format the filing system

Return values

int	error code

Note: this does a default format, returning file system to a fresh state The filing system implementation may define more specialised methods which can be called directly.

Implements IFS::IFileSystem.

◆ fremove()

int IFS::Host::FileSystem::fremove ( FileHandle file )

inlineoverridevirtual

remove (delete) a file by handle

Parameters

file	handle to open file

Return values

int	error code

Implements IFS::IFileSystem.

◆ fstat()

int IFS::Host::FileSystem::fstat	(	FileHandle	file,
		Stat *	stat
	)

overridevirtual

get file information

Parameters

file	handle to open file
stat	structure to return information in, may be null

Return values

int	error code

Implements IFS::IFileSystem.

◆ ftruncate()

int IFS::Host::FileSystem::ftruncate	(	FileHandle	file,
		size_t	new_size
	)

overridevirtual

Truncate (reduce) the size of an open file.

Parameters

file	Open file handle, must have Write access
newSize

Return values

int	Error code

Note: In POSIX ftruncate() can also make the file bigger, however SPIFFS can only reduce the file size and will return an error if newSize > fileSize

Implements IFS::IFileSystem.

◆ getErrorString()

String IFS::Host::FileSystem::getErrorString ( int err )

overridevirtual

get the text for a returned error code

Return values

String

Reimplemented from IFS::IFileSystem.

◆ getinfo()

int IFS::Host::FileSystem::getinfo ( Info & info )

overridevirtual

get filing system information

Parameters

info	structure to read information into

Return values

int	error code

Implements IFS::IFileSystem.

◆ lseek()

int IFS::Host::FileSystem::lseek	(	FileHandle	file,
		int	offset,
		SeekOrigin	origin
	)

overridevirtual

change file read/write position

Parameters

file	handle to open file
offset	position relative to origin
origin	where to seek from (start/end or current position)

Return values

int	current position or error code

Implements IFS::IFileSystem.

◆ mkdir()

int IFS::Host::FileSystem::mkdir ( const char * path )

overridevirtual

Create a directory.

Parameters

path	Path to directory

Return values

int	error code

Only the final directory in the path is guaranteed to be created. Usually, this call will fail if intermediate directories are not present. Use makedirs() for this purpose.

Implements IFS::IFileSystem.

◆ mount()

int IFS::Host::FileSystem::mount ( )

inlineoverridevirtual

Mount file system, performing any required initialisation.

Return values

error code

Implements IFS::IFileSystem.

◆ open()

FileHandle IFS::Host::FileSystem::open	(	const char *	path,
		OpenFlags	flags
	)

overridevirtual

open a file by name/path

Parameters

path	full path to file
flags	opens for opening file

Return values

FileHandle file handle or error code

Implements IFS::IFileSystem.

◆ opendir()

int IFS::Host::FileSystem::opendir	(	const char *	path,
		DirHandle &	dir
	)

overridevirtual

open a directory for reading

Parameters

path	path to directory. nullptr is interpreted as root directory
dir	returns a pointer to the directory object

Return values

int	error code

Implements IFS::IFileSystem.

◆ read()

int IFS::Host::FileSystem::read	(	FileHandle	file,
		void *	data,
		size_t	size
	)

overridevirtual

read content from a file and advance cursor

Parameters

file	handle to open file
data	buffer to write into
size	size of file buffer, maximum number of bytes to read

Return values

int	number of bytes read or error code

Implements IFS::IFileSystem.

◆ readdir()

int IFS::Host::FileSystem::readdir	(	DirHandle	dir,
		Stat &	stat
	)

overridevirtual

read a directory entry

Parameters

dir
stat

Return values

int	error code

Note: File system allocates entries structure as it usually needs to track other information. It releases memory when closedir() is called.

Implements IFS::IFileSystem.

◆ remove()

int IFS::Host::FileSystem::remove ( const char * path )

inlineoverridevirtual

remove (delete) a file by path

Parameters

path

Return values

int	error code

Implements IFS::IFileSystem.

◆ rename()

int IFS::Host::FileSystem::rename	(	const char *	oldpath,
		const char *	newpath
	)

inlineoverridevirtual

rename a file

Parameters

oldpath
newpath

Return values

int	error code

Implements IFS::IFileSystem.

◆ rewinddir()

int IFS::Host::FileSystem::rewinddir ( DirHandle dir )

overridevirtual

Reset directory read position to start.

Parameters

dir

Return values

int	error code

Implements IFS::IFileSystem.

◆ setacl()

int IFS::Host::FileSystem::setacl	(	FileHandle	file,
		const ACL &	acl
	)

overridevirtual

Set access control information for file.

Parameters

file	handle to open file
acl

Return values

int	error code

Implements IFS::IFileSystem.

◆ setattr()

int IFS::Host::FileSystem::setattr	(	const char *	path,
		FileAttributes	attr
	)

overridevirtual

Set file attributes.

Parameters

path	Full path to file
attr

Return values

int	error code

Implements IFS::IFileSystem.

◆ setcompression()

int IFS::Host::FileSystem::setcompression	(	FileHandle	file,
		const Compression &	compression
	)

overridevirtual

Set file compression information.

Parameters

file
compression

Return values

int	error code

Implements IFS::IFileSystem.

◆ settime()

int IFS::Host::FileSystem::settime	(	FileHandle	file,
		time_t	mtime
	)

overridevirtual

Set modificatino tiem for file.

Parameters

file	handle to open file, must have write access

Return values

int	error code

Note: any subsequent writes to file will reset this to current time

Implements IFS::IFileSystem.

◆ stat()

int IFS::Host::FileSystem::stat	(	const char *	path,
		Stat *	stat
	)

overridevirtual

get file information

Parameters

path	name or path of file
s	structure to return information in, may be null to do a simple file existence check

Return values

int	error code

Implements IFS::IFileSystem.

◆ tell()

int32_t IFS::Host::FileSystem::tell ( FileHandle file )

overridevirtual

get current file position

Parameters

file	handle to open file

Return values

int32_t current position relative to start of file, or error code

Implements IFS::IFileSystem.

◆ write()

int IFS::Host::FileSystem::write	(	FileHandle	file,
		const void *	data,
		size_t	size
	)

overridevirtual

write content to a file at current position and advance cursor

Parameters

file	handle to open file
data	buffer to read from
size	number of bytes to write

Return values

int	number of bytes written or error code

Implements IFS::IFileSystem.

The documentation for this class was generated from the following file:

Components/IFS/src/Arch/Host/include/IFS/Host/FileSystem.h

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ FileSystem()

◆ ~FileSystem()

Member Function Documentation

◆ check()

◆ close()

◆ closedir()

◆ eof()

◆ flush()

◆ fopen()

◆ format()

◆ fremove()

◆ fstat()

◆ ftruncate()

◆ getErrorString()

◆ getinfo()

◆ lseek()

◆ mkdir()

◆ mount()

◆ open()

◆ opendir()

◆ read()

◆ readdir()

◆ remove()

◆ rename()

◆ rewinddir()

◆ setacl()

◆ setattr()

◆ setcompression()

◆ settime()

◆ stat()

◆ tell()

◆ write()