Struct Layout 

pub struct Layout {
    pub dir: PathBuf,
    pub spec: GroupLayout,
    /* private fields */
}

Fields

dir: PathBuf

spec: GroupLayout

Implementations

impl Layout

pub fn create(dir: &Path, spec: GroupLayout) -> Result<Self>

pub fn open(dir: &Path, spec: GroupLayout) -> Result<Self>

2026-09-25: Open an existing layout. A missing or undersized layer file is an error.

pub fn fd(&self, layer: u32) -> RawFd

2026-09-25: Raw fd of a layer file, for IoUringBackend and PosixBackend::drop_pagecache.

pub fn file(&self, layer: u32) -> &File

2026-09-25: The layer file, for PosixBackend’s positional I/O; the only accessor on Windows.

pub fn offset(&self, key: GroupKey) -> u64

pub fn group_bytes(&self) -> u64