How can a dovecot-2 plugin safely use file-locks or file-dotlocks when the
processes into which it plugs handle multiple connections? (Via, e.g.,
service imap {
client_limit = N
service_count = 0
})
Dovecot's file-locks and file-dotlocks do not appear to support
nesting/recursion.For instance, squat_trie_lock(). Imagine one user is connected to a single imap process twice.
