util.signal: Fail signalfd() if unable to change signal mask
By aborting early, the failure should be brought to the attention
somehow.
This file documents the structure of the roster object.
table roster {
[string bare_jid] = roster_item
}
table roster_item {
string subscription = "none" | "to" | "from" | "both"
string name = Opaque string set by client. (optional)
set groups = a set of opaque strings set by the client
boolean ask = nil | "subscribe" - a value of true indicates subscription is pending
}
The roster is available as
hosts[host].sessions[username].roster
and a copy is made to session.roster for all sessions.
All modifications to a roster should be done through the rostermanager.