wisp_ert.fs.LocalFS Class Reference

Local file system service class. More...

Inheritance diagram for wisp_ert.fs.LocalFS:

Public Member Functions
def	__init__ (self, root_dir="/")
	Local file system service constructor. More...
def	open (self, path, flags, mode=0o666)
	Open a file with given flags and mode. More...
def	close (self, fd)
	Close a file. More...
def	read (self, fd, size)
	Read given size of data from file. More...
def	functions (self)
	Get ERT service functions. More...
Public Member Functions inherited from wisp_ert.runtime.Service
def	constants (self)
	Get C constants provided by this service. More...
def	functions (self)
	Get C functions provided by this service. More...

Static Public Attributes
	write = urpc_sig([I16, VARY], [I16], _proxy_sys("write"))
	Write system call proxy. More...
	lseek = urpc_sig([I16, I16, I16], [I16], _proxy_sys("lseek"))
	Lseek system call proxy. More...
list	constants
	ERT constants. More...

Private Attributes
	_root_dir
	Local file system root. More...
	_fd_mapping
	File descriptor mapping. More...

Static Private Attributes
	_close = _proxy_sys("close")
	Close system call proxy. More...
	_read = _proxy_sys("read")
	Read system call proxy. More...

Detailed Description

Local file system service class.

Constructor & Destructor Documentation

__init__()

def wisp_ert.fs.LocalFS.__init__	(		self,
			root_dir = "/"
	)

Local file system service constructor.

Parameters

root_dir

Local file system root.

Member Function Documentation

close()

def wisp_ert.fs.LocalFS.close	(		self,
			fd
	)

Close a file.

Parameters

fd	LocalFS virtual file descriptor.

Returns

0 on success, or negative error number on failure.

functions()

def wisp_ert.fs.LocalFS.functions

(

self

)

Get ERT service functions.

open()

def wisp_ert.fs.LocalFS.open	(		self,
			path,
			flags,
			mode = 0o666
	)

Open a file with given flags and mode.

Parameters

path	Path of the file.
flags	Open flags.
mode	File mode when a new file is going to be created.

Returns

File descriptor on success, or negative error number on failure.

read()

def wisp_ert.fs.LocalFS.read	(		self,
			fd,
			size
	)

Read given size of data from file.

Parameters

fd	LocalFS virtual file descriptor.
size	Size of data to read.

Returns

: Data and its size on success, or negative error number on failure.

Member Data Documentation

_close

wisp_ert.fs.LocalFS._close = _proxy_sys("close")

staticprivate

Close system call proxy.

_fd_mapping

wisp_ert.fs.LocalFS._fd_mapping

private

File descriptor mapping.

_read

wisp_ert.fs.LocalFS._read = _proxy_sys("read")

staticprivate

Read system call proxy.

_root_dir

wisp_ert.fs.LocalFS._root_dir

private

Local file system root.

constants

list wisp_ert.fs.LocalFS.constants

static

Initial value:

=  [
        # Open flags
        (os.O_CREAT, I16),
        (os.O_RDONLY, I16),
        (os.O_WRONLY, I16),
        (os.O_RDWR, I16),
        (os.O_CREAT, I16),
        # Whence
        (os.SEEK_SET, I16),
        (os.SEEK_CUR, I16),
        (os.SEEK_END, I16),
        # Error numbers
        (errno.EBADF, I16),
        (errno.EINVAL, I16),
    ]

ERT constants.

lseek

wisp_ert.fs.LocalFS.lseek = urpc_sig([I16, I16, I16], [I16], _proxy_sys("lseek"))

static

Lseek system call proxy.

write

wisp_ert.fs.LocalFS.write = urpc_sig([I16, VARY], [I16], _proxy_sys("write"))

static

Write system call proxy.

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

• wisp-ert/wisp_ert/fs.py