Module binding 

Binding tables: longest-prefix substitution between guest and host paths, and the descriptors the path walk starts from.

Structs

DirCache

O_PATH descriptors of canonical guest directories already walked, shared by every view of one supervisor.

Fs

The guest filesystem view: a root directory plus bind mounts.

Pin

The host side of the root or of a binding, held open once.

Constants

DIR_CACHE_MAX 🔒

Directory descriptors kept in the cache before it is cleared wholesale.

Statics

NEXT_VIEW_ID 🔒

Source of view identifiers, unique for the life of the supervisor.

Functions

is_prefix

Whether prefix is path itself or a directory ancestor of it.

join_prefix

Concatenates a prefix and a /-leading (or empty) remainder without doubling slashes.

open_path 🔒

Opens a host path as an O_PATH|O_CLOEXEC descriptor with extra flags.

resolve_host 🔒

The real host path behind a binding or the root, symlinks resolved.

rest_after

The part of path after prefix, keeping its leading slash.

Type Aliases

CacheKey 🔒

A cache entry’s key: the view’s id and the canonical guest directory.