L4Re::Vfs::File Class Reference

The basic interface for an open POSIX file. More...

#include <vfs.h>

Inheritance diagram for L4Re::Vfs::File:

Collaboration diagram for L4Re::Vfs::File:

Additional Inherited Members
Public Member Functions inherited from L4Re::Vfs::Generic_file
virtual int	unlock_all_locks () noexcept=0
	Unlock all locks on the file.
virtual int	fstat64 (struct stat64 *buf) const noexcept=0
	Get status information for the file.
virtual int	fchmod (mode_t) noexcept=0
	Change POSIX access rights on the file.
virtual int	get_status_flags () const noexcept=0
	Get file status flags (fcntl F_GETFL).
virtual int	set_status_flags (long flags) noexcept=0
	Set file status flags (fcntl F_SETFL).
Public Member Functions inherited from L4Re::Vfs::Regular_file
virtual L4::Cap< L4Re::Dataspace >	data_space () const noexcept=0
	Get an L4Re::Dataspace object for the file.
virtual ssize_t	readv (const struct iovec *, int iovcnt) noexcept=0
	Read one or more blocks of data from the file.
virtual ssize_t	writev (const struct iovec *, int iovcnt) noexcept=0
	Write one or more blocks of data to the file.
virtual off64_t	lseek64 (off64_t, int) noexcept=0
	Change the file pointer.
virtual int	ftruncate64 (off64_t pos) noexcept=0
	Truncate the file at the given position.
virtual int	fsync () const noexcept=0
	Sync the data and meta data to persistent storage.
virtual int	fdatasync () const noexcept=0
	Sync the data to persistent storage.
virtual int	get_lock (struct flock64 *lock) noexcept=0
	Test if the given lock can be placed in the file.
virtual int	set_lock (struct flock64 *lock, bool wait) noexcept=0
	Acquire or release the given lock on the file.
Public Member Functions inherited from L4Re::Vfs::Directory
virtual int	faccessat (const char *path, int mode, int flags) noexcept=0
	Check access permissions on the given file.
virtual int	mkdir (const char *path, mode_t mode) noexcept=0
	Create a new subdirectory.
virtual int	unlink (const char *path) noexcept=0
	Unlink the given file from that directory.
virtual int	rename (const char *src_path, const char *dst_path) noexcept=0
	Rename the given file.
virtual int	link (const char *src_path, const char *dst_path) noexcept=0
	Create a hard link (second name) for the given file.
virtual int	symlink (const char *src_path, const char *dst_path) noexcept=0
	Create a symbolic link for the given file.
virtual int	rmdir (const char *path) noexcept=0
	Delete an empty directory.
Public Member Functions inherited from L4Re::Vfs::Special_file
virtual int	ioctl (unsigned long cmd, va_list args) noexcept=0
	The famous IO control.

Detailed Description

The basic interface for an open POSIX file.

An open POSIX file can be anything that hides behind a POSIX file descriptor. This means that even directories are files. An open file can be anything from a directory to a special device file so see Generic_file, Regular_file, Directory, and Special_file for more information.

Note

For implementing a backend for the L4Re::Vfs L4Re::Vfs::Be_file may be used as a base class.

Definition at line 435 of file vfs.h.

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

• l4/l4re_vfs/vfs.h