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kumo.uncached_glob(pattern [, relative_to])

Since: Dev Builds Only

The functionality described in this section requires a dev build of KumoMTA. You can obtain a dev build by following the instructions in the Installation section.


This function can cause an expensive filesystem walk to occur, especially if used on a storage volume that is experiencing IO pressure (such as from spooling or logging). You probably should use the implicitly cached glob function instead of this one. If you must use this one, then it is strongly advised that you avoid calling it from the file-level scope of your policy scripts in order to avoid unconditionally triggering the walk on every lua context construction.

This function evalutes the glob pattern and returns an array containing the absolute file names of the matching results. Due to limitations in the lua bindings, all of the paths must be able to be represented as UTF-8 or this function will generate an error.

The optional relative_to parameter can be used to make the results relative to a path. If the results have the same prefix as relative_to then it will be removed from the returned path. The default for for this parameter is ..


If the specified pattern or path references a directory that doesn't exist, or a directory that is inaccessible to the kumo user, no error will be generated; those paths are silently omitted from the results.

local kumo = require 'kumo'

-- logs the names of all of the '*.conf' files under `/etc`
print(kumo.json_encode_pretty(kumo.uncached_glob '/etc/*.conf'))