filesystem

type CreationMode struct {
	// contains filtered or unexported fields
}

type DeviceNumber struct {
	// contains filtered or unexported fields
}

type Directory interface {
	// EnterDirectory creates a derived directory handle for a
	// subdirectory of the current subtree.
	EnterDirectory(name path.Component) (DirectoryCloser, error)

	// Open a file contained within the directory for writing, only
	// allowing data to be appended to the end of the file.
	OpenAppend(name path.Component, creationMode CreationMode) (FileAppender, error)
	// Open a file contained within the directory for reading. The
	// CreationMode is assumed to be equal to DontCreate.
	OpenRead(name path.Component) (FileReader, error)
	// Open a file contained within the current directory for both
	// reading and writing.
	OpenReadWrite(name path.Component, creationMode CreationMode) (FileReadWriter, error)
	// Open a file contained within the current directory for writing.
	OpenWrite(name path.Component, creationMode CreationMode) (FileWriter, error)

	// Link is the equivalent of os.Link().
	Link(oldName path.Component, newDirectory Directory, newName path.Component) error
	// Clonefile is the equivalent of unix.Clonefile on macOS.
	Clonefile(oldName path.Component, newDirectory Directory, newName path.Component) error
	// Lstat is the equivalent of os.Lstat().
	Lstat(name path.Component) (FileInfo, error)
	// Mkdir is the equivalent of os.Mkdir().
	Mkdir(name path.Component, perm os.FileMode) error
	// Mknod is the equivalent of unix.Mknod().
	Mknod(name path.Component, perm os.FileMode, deviceNumber DeviceNumber) error
	// ReadDir is the equivalent of os.ReadDir().
	ReadDir() ([]FileInfo, error)
	// Readlink is the equivalent of os.Readlink().
	Readlink(name path.Component) (path.Parser, error)
	// Remove is the equivalent of os.Remove().
	Remove(name path.Component) error
	// RemoveAll is the equivalent of os.RemoveAll().
	RemoveAll(name path.Component) error
	// RemoveAllChildren empties out a directory, without removing
	// the directory itself.
	RemoveAllChildren() error
	// Rename is the equivalent of os.Rename().
	Rename(oldName path.Component, newDirectory Directory, newName path.Component) error
	// Symlink is the equivalent of os.Symlink().
	Symlink(oldName path.Parser, newName path.Component) error
	// Sync the contents of a directory (i.e., the list of names) to
	// disk. This does not sync the contents of the files
	// themselves.
	Sync() error
	// Chtimes sets the atime and mtime of the named file.
	Chtimes(name path.Component, atime, mtime time.Time) error

	// IsWritable checks whether the Directory can be written to by the current user.
	IsWritable() (bool, error)
	// IsWritableChild checks whether the path in the Directory can be written to by the current user.
	IsWritableChild(name path.Component) (bool, error)

	// Function that base types may use to implement calls that
	// require double dispatching, such as hardlinking and renaming.
	Apply(arg interface{}) error

	// Mount and Unmount.
	Mount(mountpoint path.Component, source, fstype string) error
	Unmount(mountpoint path.Component) error
}

type DirectoryCloser interface {
	Directory
	io.Closer
}

type FileAppender interface {
	io.Closer
	io.Writer

	Sync() error
}

type FileInfo struct {
	// contains filtered or unexported fields
}

type FileInfoList []FileInfo

type FileReadWriter interface {
	FileReader
	FileWriter
}

type FileReader interface {
	io.Closer
	io.ReaderAt

	// Equivalent to lseek() with SEEK_DATA and SEEK_HOLE.
	//
	// These functions return io.EOF when the provided offset points
	// to or past the end-of-file position. Calling this function
	// with Data may also return io.EOF when no more data regions
	// exist past the provided offset.
	GetNextRegionOffset(offset int64, regionType RegionType) (int64, error)
}

type FileType int

type FileWriter interface {
	io.Closer
	io.WriterAt

	Sync() error
	Truncate(size int64) error
}

type RegionType int