Derek McGowan d92088d822 erofs: refuse to apply into a read-only snapshot ...

The differ found an already-populated snapshot by looking for a
symlinked layer.erofs in the layer directory. That check needs a
particular on-disk layout, and it needs erofsutils.MountsToLayer to
infer the snapshot directory from a mount source that lives inside it.
Neither holds for a snapshot whose content is not a local file.

Refuse on the signal the unpacker already uses. Mounts handed to Apply
that are read-only belong to a snapshot the snapshotter populated
itself, whose content is shared with every other snapshot of that layer.
This does not need path inference, covers parented and parentless
snapshots alike, and stays correct for any content the snapshotter does
not store as a plain file in the snapshot directory.

The error stays ErrFailedPrecondition. plugins/services/diff/local.go
falls through to the next differ on ErrNotImplemented. Another differ
would fail on this layer for the same reason.

Signed-off-by: Derek McGowan <derek@mcg.dev>

2026-09-11 17:00:00 -07:00

..

erofs

erofs: refuse to apply into a read-only snapshot

2026-09-11 17:00:00 -07:00

lcow

plugins: modernize: plusbuild

2026-03-17 13:36:17 +01:00

walking

diff/walking: enable mount manager

2026-04-09 14:17:35 +08:00

windows

plugins: remove some stray logrus imports

2026-08-27 22:44:35 +02:00