pkg/image_root
(astring) The path to the image whose file information will be used as a cache for file data.
Incorrect answers:
A: pkg.depotd is the depot server for the image packaging system. It provides network access to the
data contained within a package repository. Clients that do not support direct access to a repository
through the file system, or for which network access is the only available or preferred method of
transport, typically use the package depot.
B: pkg/readonly(boolean)
Sets whether modifying operations, such as those initiated by pkgsend(1), are disabled. Retrieval
operations are still available. This property cannot be true when the pkg/mirror property is true. The
default value is true.
C: pkg/writable_root
(astring) The file system path to a directory to which the program has write access. This is used with
the -readonly option to enable the depot server to create files, such as search indexes, without
needing write access to the package information.
Reference: man pkg.depotd