This file contains the access control list for the Proxmox Backup Server API.

Each line starts with acl:, followed by 4 additional values separated by collon.

propagate:Propagate permissions down the hierachrchy
path:The object path
User/Token:List of users and token
Role:List of assigned roles

Here is an example list:

acl:1:/:root@pam!test:Admin
acl:1:/datastore/store1:user1@pbs:DatastoreAdmin

You can use the proxmox-backup-manager acl command to manipulate this file.