nevaforget 58c076198f feat: switch logging to systemd journal (v0.4.2)
Replace env_logger + /var/cache/moonlock file logging with
systemd-journal-logger. Logs are now reliably accessible via
journalctl --user -u moonlock, fixing invisible errors in the
systemd user service context.

- Cargo.toml: env_logger → systemd-journal-logger 2.2
- main.rs: setup_logging() uses JournalLog
- PKGBUILD: add systemd-libs dependency
- power.rs: include unstaged systemctl fixes (ABOUTME, --no-ask-password, output())
2026-03-28 01:11:48 +01:00

Moonlock

A secure Wayland lockscreen with GTK4, PAM authentication and fingerprint support. Part of the Moonarch ecosystem.

Features

  • ext-session-lock-v1 — Protocol-guaranteed screen locking (compositor keeps screen locked on crash)
  • PAM authentication — Uses system PAM stack (/etc/pam.d/moonlock)
  • Fingerprint unlock — fprintd D-Bus integration (optional)
  • Multi-monitor — Lockscreen on every monitor
  • i18n — German and English (auto-detected)
  • Faillock warning — UI counter + system pam_faillock
  • Panic safety — Panic hook logs but never unlocks
  • Password wiping — Zeroize on drop

Requirements

  • GTK 4
  • gtk4-session-lock (ext-session-lock-v1 support)
  • PAM (/etc/pam.d/moonlock)
  • Optional: fprintd for fingerprint support

Building

cargo build --release

Installation

# Install binary
sudo install -Dm755 target/release/moonlock /usr/bin/moonlock

# Install PAM config
sudo install -Dm644 config/moonlock-pam /etc/pam.d/moonlock

# Optional: Install example config
sudo install -Dm644 config/moonlock.toml.example /etc/moonlock/moonlock.toml.example

Configuration

Create /etc/moonlock/moonlock.toml or ~/.config/moonlock/moonlock.toml:

background_path = "/usr/share/wallpapers/moon.jpg"
fingerprint_enabled = true

Usage

Typically launched via keybind in your Wayland compositor:

# Niri keybind example
binds {
    Mod+L { spawn "moonlock"; }
}

Development

cargo test
cargo build --release
LD_PRELOAD=/usr/lib/libgtk4-layer-shell.so ./target/release/moonlock

License

MIT

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