search for: last_partial

...s that most of dovecot's code and assumptions remain unchanged: the mail process executes imap/pop commands with the permissions of the user and with nearly the same environment so getenv() still works as expected. Some assumptions do change, for instance global state variables like last_partial and quota_set are forbidden, and must be stored per-client or per-user. Also it's no longer OK just to exit or panic on error, for that disconnects multiple users not just one. Some key entry points in the patch are create_mail_process() in mail- process.c and io_env_switch() in ioloop.c...