Added initial lxd ebuild.

app-emulation/lxd/files/lxd-4.0.0.confd

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+# Group which owns the shared socket
+LXD_OPTIONS+=" --group lxd"
+
+# Enable cpu profiling into the specified file
+#LXD_OPTIONS+=" --cpuprofile /tmp/lxc_cpu_profile"
+
+# Enable memory profiling into the specified file
+#LXD_OPTIONS+=" --memprofile /tmp/lxc_mem_profile"
+
+# Enable debug mode
+#LXD_OPTIONS+=" --debug"
+
+# For debugging, print a complete stack trace every n seconds
+#LXD_OPTIONS+=" --print-goroutines-every 5"
+
+# Enable verbose mode
+#LXD_OPTIONS+=" -v"
+
+# Logfile to log to
+#LXD_OPTIONS+=" --logfile /var/log/lxd/lxd.log"
+
+# Enable syslog logging
+#LXD_OPTIONS+=" --syslog"

app-emulation/lxd/files/lxd-4.0.0.initd

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+#!/sbin/openrc-run
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+DAEMON=/usr/sbin/lxd
+PIDFILE=/run/lxd.pid
+
+depend() {
+	need net
+	need lxcfs
+}
+
+start() {
+	ebegin "Starting lxd service"
+
+	modprobe -f loop > /dev/null 2>&1
+
+	# fix permissions on /var/lib/lxd and make sure it exists
+	install -d /var/lib/lxd --group lxd --owner root --mode 0775
+	start-stop-daemon --start \
+		--pidfile ${PIDFILE} \
+		--exec ${DAEMON} \
+		--background \
+		--make-pidfile \
+		-- \
+		${LXD_OPTIONS}
+	eend ${?}
+}
+
+stop() {
+	if [ "${RC_CMD}" = restart ]; then
+		ebegin "Stopping lxd service (but not containers)"
+		# start-stop-daemon sends SIGTERM with a timeout of 5s by default.
+		# SIGTERM indicates to LXD that it will be stopped temporarily.
+		# Instances will keep running.
+		start-stop-daemon --stop --quiet -p "${PIDFILE}"
+		eend ${?}
+	else
+		ebegin "Stopping lxd service and containers, waiting 40s"
+		# SIGPWR indicates to LXD that the host is going down.
+		# LXD will do a clean shutdown of all instances.
+		# After 30s all remaining instances will be killed.
+		# We wait up to 40s for LXD.
+		start-stop-daemon --stop --quiet -R SIGPWR/40 -p "${PIDFILE}"
+		eend ${?}
+	fi
+}

app-emulation/lxd/files/lxd-4.0.0.service

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+[Unit]
+Description=LXD - main daemon
+After=network-online.target lxcfs.service lxd.socket
+Requires=network-online.target lxcfs.service lxd.socket
+Documentation=man:lxd(1)
+
+[Service]
+EnvironmentFile=-/etc/environment
+ExecStart=/usr/sbin/lxd --group lxd --logfile=/var/log/lxd/lxd.log
+ExecStartPost=/usr/sbin/lxd waitready --timeout=600
+KillMode=process
+TimeoutStartSec=600s
+TimeoutStopSec=30s
+Restart=on-failure
+LimitNOFILE=1048576
+LimitNPROC=infinity
+TasksMax=infinity
+
+[Install]
+Also=lxd-containers.service lxd.socket

app-emulation/lxd/files/lxd-4.0.0.socket

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+[Unit]
+Description=LXD - unix socket
+Documentation=man:lxd(1)
+
+[Socket]
+ListenStream=/var/lib/lxd/unix.socket
+SocketGroup=lxd
+SocketMode=0660
+Service=lxd.service
+
+[Install]
+WantedBy=sockets.target

app-emulation/lxd/files/lxd-4.0.0_apparmor.service

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+[Unit]
+Description=LXD - main daemon
+After=network-online.target lxcfs.service lxd.socket
+Requires=network-online.target lxcfs.service lxd.socket
+Documentation=man:lxd(1)
+
+[Service]
+EnvironmentFile=-/etc/environment
+ExecStartPre=/usr/libexec/lxc/lxc-apparmor-load
+ExecStart=/usr/sbin/lxd --group lxd --logfile=/var/log/lxd/lxd.log
+ExecStartPost=/usr/sbin/lxd waitready --timeout=600
+KillMode=process
+TimeoutStartSec=600s
+TimeoutStopSec=30s
+Restart=on-failure
+LimitNOFILE=1048576
+LimitNPROC=infinity
+TasksMax=infinity
+
+[Install]
+Also=lxd-containers.service lxd.socket

app-emulation/lxd/files/lxd-containers-4.0.0.service

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+[Unit]
+Description=LXD - container startup/shutdown
+Documentation=man:lxd(1)
+After=lxd.socket lxd.service
+Requires=lxd.socket
+
+[Service]
+Type=oneshot
+ExecStart=/usr/sbin/lxd activateifneeded
+ExecStop=/usr/sbin/lxd shutdown
+TimeoutStartSec=600s
+TimeoutStopSec=600s
+RemainAfterExit=yes
+
+[Install]
+WantedBy=multi-user.target