Lennart Poettering
8242f08ecb
logind now counts started sessions by session class in /run/systemd/login-counters, which it keeps mapped for its whole runtime. The counters are monotonic (i.e. are not decreased on logout), survive restarts of logind, but are reset on reboot. Sessions are counted where they are created (via D-Bus or Varlink), not in session_start(), since the latter is also called for sessions restored after a restart of logind. The counters are an array indexed by SessionClass (minus SESSION_NONE, which is never registered with logind), hence the enum now carries a note that its order determines the file layout.
System and Service Manager
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