vasilito
845ae99f9d
Three fixes for the KWin DRM device discovery failure: 1. drm_scheme_ready(): replace head -c 1 with exec 3< open test. Reading from a DRM scheme fd blocks because the scheme expects ioctl-style request/response, not streaming reads. Use open() success as the scheme availability probe instead. 2. ConsoleKitSession::create(): return nullptr immediately. The D-Bus isServiceRegistered() call can block indefinitely when the bus daemon doesn't fully implement org.freedesktop.DBus. With both LogindSession and ConsoleKitSession returning nullptr, Session::create() falls through to NoopSession which uses plain open() for DRM device access. 3. Boot chain deps: redox-drm depends on driver-manager, greeter depends on evdevd (keyboard/mouse ready before login). Also includes: KF6 CMake build fixes, Qt6 platform patches, libdrm Redox ioctl shim, and wayland.toml scheme check fix.
107 lines
4.2 KiB
Bash
Executable File
107 lines
4.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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# NOTE: Neither WAYLAND_DISPLAY nor DISPLAY may be exported when starting
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# KWin. KWin uses their presence (even as empty strings) to select the
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# nested Wayland or X11 backend instead of the bare-metal DRM/KMS backend.
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# Clients (the greeter UI, KDE session apps) receive WAYLAND_DISPLAY from
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# redbear-session-launch instead.
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unset DISPLAY
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unset WAYLAND_DISPLAY
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export XDG_SESSION_TYPE=wayland
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export LIBSEAT_BACKEND=seatd
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export SEATD_SOCK=/run/seatd.sock
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export QT_PLUGIN_PATH="${QT_PLUGIN_PATH:-/usr/plugins}"
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export QT_QPA_PLATFORM_PLUGIN_PATH="${QT_QPA_PLATFORM_PLUGIN_PATH:-/usr/plugins/platforms}"
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export QML2_IMPORT_PATH="${QML2_IMPORT_PATH:-/usr/qml}"
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export QT_WAYLAND_SHELL_INTEGRATION="${QT_WAYLAND_SHELL_INTEGRATION:-xdg-shell}"
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export XCURSOR_THEME="${XCURSOR_THEME:-Pop}"
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export XKB_CONFIG_ROOT="${XKB_CONFIG_ROOT:-/usr/share/X11/xkb}"
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export KWIN_COMPOSE="${KWIN_COMPOSE:-O2}"
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export QT_DEBUG_PLUGINS=1
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export QT_LOGGING_RULES="${QT_LOGGING_RULES:-*.debug=true}"
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export MESA_LOADER_DRIVER_OVERRIDE="${MESA_LOADER_DRIVER_OVERRIDE:-virtio_gpu}"
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if [ -z "${XDG_RUNTIME_DIR:-}" ]; then
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export XDG_RUNTIME_DIR="/tmp/run/redbear-greeter"
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fi
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mkdir -p "$XDG_RUNTIME_DIR"
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drm_scheme_ready() {
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# Check if /scheme/drm/card0 can be opened. On Redox, stat and test -e
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# are unreliable for scheme paths. Opening the scheme path with redir
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# succeeds if the scheme daemon has registered the device, fails otherwise.
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# Do NOT read from it (head -c 1) — DRM scheme fds are request/response,
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# not streaming, so a read would block waiting for a request response.
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( exec 3<"/scheme/drm/card0" && exec 3>&- ) >/dev/null 2>&1
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}
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wait_for_drm_scheme() {
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local wait_seconds="${REDBEAR_DRM_WAIT_SECONDS:-10}"
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local attempts=0
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if drm_scheme_ready; then
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return 0
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fi
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echo "redbear-greeter-compositor: waiting up to ${wait_seconds}s for DRM device(s): /scheme/drm:/scheme/drm/card0" >&2
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attempts=$((wait_seconds * 2))
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while [ "$attempts" -gt 0 ]; do
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if drm_scheme_ready; then
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return 0
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fi
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sleep 0.5
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attempts=$((attempts - 1))
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done
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drm_scheme_ready
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}
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# Prefer kwin_wayland (real KWin compositor). Fall back to redbear-compositor only if
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# KWin is not installed (e.g. text-only target accidentally includes greeter).
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COMPOSITOR=""
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if command -v kwin_wayland >/dev/null 2>&1; then
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COMPOSITOR="kwin_wayland"
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elif command -v /usr/bin/kwin_wayland >/dev/null 2>&1; then
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COMPOSITOR="/usr/bin/kwin_wayland"
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elif command -v redbear-compositor >/dev/null 2>&1; then
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COMPOSITOR="redbear-compositor"
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echo "redbear-greeter-compositor: kwin_wayland not found, falling back to redbear-compositor" >&2
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else
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echo "redbear-greeter-compositor: no compositor found (need kwin_wayland or redbear-compositor)" >&2
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exit 1
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fi
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# pcid-spawner is intentionally async in Red Bear OS, so service ordering only guarantees that
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# spawning has started. Wait for the DRM scheme to appear.
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if wait_for_drm_scheme; then
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export KWIN_DRM_DEVICES="${KWIN_DRM_DEVICES:-/scheme/drm/card0}"
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echo "redbear-greeter-compositor: using DRM compositor backend (KWIN_DRM_DEVICES=${KWIN_DRM_DEVICES})" >&2
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# NOTE: QDBusConnection::sessionBus() blocks on Redox when attempting Unix socket
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# connect(), even when dbus-daemon is running. All KWin sessionBus() calls in the
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# startup path have been bypassed in the KWin source. We do NOT set
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# DBUS_SESSION_BUS_ADDRESS so that remaining sessionBus() calls with env-var guards
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# skip gracefully. If a future change re-enables D-Bus session bus, the Qt/Redox
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# Unix socket connect() issue must be resolved first.
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echo "redbear-greeter-compositor: env DBUS_SESSION_BUS_ADDRESS=${DBUS_SESSION_BUS_ADDRESS:-unset} DBUS_SYSTEM_BUS_ADDRESS=${DBUS_SYSTEM_BUS_ADDRESS:-unset}" >&2
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echo "redbear-greeter-compositor: launching $COMPOSITOR" >&2
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unset QT_QPA_PLATFORM
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"$COMPOSITOR"
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EXIT_CODE=$?
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echo "redbear-greeter-compositor: compositor exited with code $EXIT_CODE" >&2
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exit $EXIT_CODE
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fi
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# No DRM at all — fall back to virtual backend.
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unset KWIN_DRM_DEVICES
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echo "redbear-greeter-compositor: no DRM device found, using virtual compositor backend" >&2
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"$COMPOSITOR"
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exit $?
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