L4Re::Vfs::Directory Class Reference

Interface for a POSIX file that is a directory. More...

#include <vfs.h>

Inheritance diagram for L4Re::Vfs::Directory:

Collaboration diagram for L4Re::Vfs::Directory:

Public Member Functions
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.

Detailed Description

Interface for a POSIX file that is a directory.

This interface provides functionality for directory files in the L4Re::Vfs. However, real objects always use the combined L4Re::Vfs::File interface.

Definition at line 140 of file vfs.h.

Member Function Documentation

faccessat()

virtual int L4Re::Vfs::Directory::faccessat ( const char *  path, int  mode, int  flags  )

pure virtualnoexcept

Check access permissions on the given file.

Backend function for POSIX access and faccessat functions.

Parameters

path	The path relative to this directory. Note: path is relative to this directory and may contain subdirectories.
mode	The access mode to check.
flags	The flags as in POSIX faccessat (AT_EACCESS, AT_SYMLINK_NOFOLLOW).

Returns

0 on success, or <0 on error.

Implemented in L4Re::Vfs::Be_file.

link()

virtual int L4Re::Vfs::Directory::link ( const char *  src_path, const char *  dst_path  )

pure virtualnoexcept

Create a hard link (second name) for the given file.

Backend for the POSIX link and linkat functions.

Parameters

src_path	The old name of the file. Note: src_path is relative to this directory and may contain subdirectories.
dst_path	The new (second) name for the file. Note: dst_path is relative to this directory and may contain subdirectories.

Returns

0 on success, or <0 on error.

Implemented in L4Re::Vfs::Be_file.

mkdir()

virtual int L4Re::Vfs::Directory::mkdir ( const char *  path, mode_t  mode  )

pure virtualnoexcept

Create a new subdirectory.

Backend for POSIX mkdir and mkdirat function calls.

Parameters

path	The name of the subdirectory to create. Note: path is relative to this directory and may contain subdirectories.
mode	The file mode to use for the new directory.

Returns

0 on success, or <0 on error. -ENOTDIR if this or some component in path is not a directory.

Implemented in L4Re::Vfs::Be_file.

rename()

virtual int L4Re::Vfs::Directory::rename ( const char *  src_path, const char *  dst_path  )

pure virtualnoexcept

Rename the given file.

Backend for the POSIX rename, renameat functions.

Parameters

src_path	The old name of the file to rename. Note: src_path is relative to this directory and may contain subdirectories.
dst_path	The new name for the file. Note: dst_path is relative to this directory and may contain subdirectories.

Returns

0 on success, or <0 on error.

Implemented in L4Re::Vfs::Be_file.

rmdir()

virtual int L4Re::Vfs::Directory::rmdir ( const char *  path )

pure virtualnoexcept

Delete an empty directory.

Backend for POSIX rmdir, rmdirat functions.

Parameters

path	The name of the directory to remove. Note: path is relative to this directory and may contain subdirectories.

Returns

0 on success, or <0 on error.

Implemented in L4Re::Vfs::Be_file.

symlink()

virtual int L4Re::Vfs::Directory::symlink ( const char *  src_path, const char *  dst_path  )

pure virtualnoexcept

Create a symbolic link for the given file.

Backend for the POSIX symlink and symlinkat functions.

Parameters

src_path	The old name of the file. Note: src_path shall be an absolute path.
dst_path	The name for symlink. Note: dst_path is relative to this directory and may contain subdirectories.

Returns

0 on success, or <0 on error.

Implemented in L4Re::Vfs::Be_file.

unlink()

virtual int L4Re::Vfs::Directory::unlink ( const char *  path )

pure virtualnoexcept

Unlink the given file from that directory.

Backend for the POSIX unlink and unlinkat functions.

Parameters

path	The name of the file to unlink. Note: path is relative to this directory and may contain subdirectories.

Returns

0 on success, or <0 on error.

Implemented in L4Re::Vfs::Be_file.

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

• l4/l4re_vfs/vfs.h