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exav

exav-update

A signature fetcher you can run on its own. Pulls ClamAV-format .cvd/.cld containers and loose signature files from any mirror or custom URL, so a build pipeline or an image-bake step can populate a database directory without the scanner present.

Terminal window
cargo add exav-update   # or use the `exav` binary's own update paths

What it does

Section titled “What it does”
  • Fetches from a mirror, a private mirror, or explicit DatabaseCustomURL-style sources — including straight from an existing freshclam.conf, whose source directives it understands.
  • Writes a plain directory of signature files that exav-core loads directly.
  • Composes with the prebuilt database: fetch once, compile once, ship a single file that loads in seconds.

What it is not

Section titled “What it is not”

It is not a freshclam replacement. There is no .cdiff incremental patching, no DNS TXT version probing, and no GPG verification — updates are full reloads. freshclam and cvdupdate remain the supported updaters, and exav reads what they produce; this crate exists for the cases where running either is awkward.

That limitation is deliberate and documented rather than papered over — see the roadmap.