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fingerprint: rebuild device proxy and re-claim after waking from sleep #1049

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fingerprint: rebuild device proxy and re-claim after waking from sleep #1049

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16 changes: 14 additions & 2 deletions src/auth/Fingerprint.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -71,8 +71,20 @@ void CFingerprint::init() {
g_dbus->m_freedesktopLogin1->uponSignal("PrepareForSleep").onInterface(LOGIN_MANAGER).call([this](bool start) {
Log::logger->log(Log::INFO, "fprint: PrepareForSleep (start: {})", start);
m_sDBUSState.sleeping = start;
if (!m_sDBUSState.sleeping && !m_sDBUSState.verifying)
startVerify();
if (m_sDBUSState.sleeping)
return;

// Some readers power down during sleep and re-enumerate on resume, and
// fprintd may have been restarted, so the pre-sleep claim (and even the
// device object path) may no longer exist. Release whatever we held —
// ignoring failures — and rebuild the proxy so startVerify() re-queries
// the device and claims it again.
if (m_sDBUSState.device) {
stopVerify();
releaseDevice();
m_sDBUSState.device.reset();
}
startVerify();
});
}

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