L4Re::Vfs::File_system Class Reference

Basic interface for an L4Re::Vfs file system. More...

#include <vfs.h>

Inheritance diagram for L4Re::Vfs::File_system:

Collaboration diagram for L4Re::Vfs::File_system:

Public Member Functions
virtual char const *	type () const noexcept=0
	Returns the type of the file system used in mount as fstype argument.
virtual int	mount (char const *source, unsigned long mountflags, void const *data, cxx::Ref_ptr< File > *dir) noexcept=0
	Create a directory object dir representing source mounted with this file system.

Detailed Description

Basic interface for an L4Re::Vfs file system.

Note

For implementing a special file system L4Re::Vfs::Be_file_system may be used as a base class.

The main purpose of this interface is to have a single object for each supported file-system type (e.g., ext2, vfat) that exists in the application and is registered at the L4Re::Vfs::Fs singleton available via L4Re::Vfs::vfs_ops. Ultimately, the POSIX mount function calls the File_system::mount method matching the file-system type given in mount.

Definition at line 831 of file vfs.h.

Member Function Documentation

mount()

virtual int L4Re::Vfs::File_system::mount ( char const *  source, unsigned long  mountflags, void const *  data, cxx::Ref_ptr< File > *  dir  )

pure virtualnoexcept

Create a directory object dir representing source mounted with this file system.

Parameters

	source	The path to the source device to mount. This may also be some URL or anything file-system specific.
	mountflags	The mount flags as specified in the POSIX mount call.
	data	The data as specified in the POSIX mount call. The contents are file-system specific.
[out]	dir	A new directory object representing the file-system root directory.

Returns

0 on success, and <0 on error (e.g. -EINVAL).

type()

virtual char const * L4Re::Vfs::File_system::type ( ) const

pure virtualnoexcept

Returns the type of the file system used in mount as fstype argument.

Note

This method is already provided by Be_file_system.

Implemented in L4Re::Vfs::Be_file_system.

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

• l4/l4re_vfs/vfs.h