Struct Session 

pub struct Session {
    pub dir: PathBuf,
    pub metadata: SessionMetadata,
    pub overlay: OverlayMetadata,
}

Fields

dir: PathBuf

metadata: SessionMetadata

overlay: OverlayMetadata

Implementations

impl Session

pub fn create(session_dir: &Path, image_path: &Path) -> Result<Self>

Create a new session, computing the SHA-256 of the image and persisting session.json plus an empty overlay/metadata.json.

pub fn resume(session_dir: &Path, image_path: &Path) -> Result<Self>

Resume an existing session, verifying the image hash matches.

pub fn save(&self) -> Result<()>

Persist session.json and overlay/metadata.json to disk.

pub fn overlay_file_path(&self, id: &str) -> PathBuf

Return the filesystem path for an overlay file by id.

pub fn write_overlay_file(&self, id: &str, data: &[u8]) -> Result<()>

Write data to an overlay file and fsync.

pub fn read_overlay_file(&self, id: &str) -> Result<Vec<u8>>

Read an overlay file.

Trait Implementations

impl Debug for Session

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.