chore: systemd

cmd/cmd.go

@@ -26,4 +26,5 @@ func init() {
 	rootCmd.AddCommand(runCmd)
 	rootCmd.AddCommand(validateCmd)
 	rootCmd.AddCommand(exportCmd)
+	rootCmd.AddCommand(reloadCmd)
 }

cmd/reload.go

@@ -0,0 +1,31 @@
+/*
+ * SPDX-License-Identifier: AGPL-3.0-only
+ * Copyright (c) 2023, v2rayA Organization <team@v2raya.org>
+ */
+
+package cmd
+
+import (
+	"github.com/spf13/cobra"
+	"os"
+	"strconv"
+	"syscall"
+)
+
+var (
+	reloadCmd = &cobra.Command{
+		Use: "reload pid",
+		Run: func(cmd *cobra.Command, args []string) {
+			if len(args) == 0 {
+				cmd.Help()
+				os.Exit(1)
+			}
+			pid, err := strconv.Atoi(args[0])
+			if err != nil {
+				cmd.Help()
+				os.Exit(1)
+			}
+			syscall.Kill(pid, syscall.SIGUSR1)
+		},
+	}
+)

cmd/run.go

@@ -3,6 +3,7 @@ package cmd
 import (
 	"fmt"
 	"github.com/mohae/deepcopy"
+	"github.com/okzk/sdnotify"
 	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 	"github.com/v2rayA/dae/cmd/internal"
@@ -67,6 +68,7 @@ func Run(log *logrus.Logger, conf *config.Config) (err error) {
 	sigs := make(chan os.Signal, 1)
 	signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP, syscall.SIGQUIT, syscall.SIGKILL, syscall.SIGILL, syscall.SIGUSR1)
 	go func() {
+		sdnotify.Ready()
 		if listener, err = c.ListenAndServe(conf.Global.TproxyPort); err != nil {
 			log.Errorln("ListenAndServe:", err)
 		}
@@ -80,6 +82,7 @@ loop:
 			if reloading {
 				reloading = false
 				log.Warnln("[Reload] Serve")
+				sdnotify.Ready()
 				go func() {
 					if err := c.Serve(listener); err != nil {
 						log.Errorln("ListenAndServe:", err)
@@ -91,6 +94,7 @@ loop:
 			}
 		case syscall.SIGUSR1:
 			// Reload signal.
+			sdnotify.Reloading()
 			log.Warnln("[Reload] Received reload signal; prepare to reload")
 			obj := c.EjectBpf()
 			log.Warnln("[Reload] Load new control plane")
@@ -99,6 +103,7 @@ loop:
 				log.WithFields(logrus.Fields{
 					"err": err,
 				}).Errorln("failed to reload")
+				sdnotify.Ready()
 				continue
 			}
 			log.Warnln("[Reload] Stopped old control plane")
@@ -155,7 +160,6 @@ func newControlPlane(log *logrus.Logger, bpf interface{}, conf *config.Config) (
 	if err != nil {
 		return nil, err
 	}
-
 	// Call GC to release memory.
 	runtime.GC()
 

control/kern/tproxy.c

@@ -1378,8 +1378,6 @@ new_connection:
     goto block;
   }
 
-control_plane_tproxy:
-
   // Assign to control plane.
 
   if (l4proto == IPPROTO_TCP) {

go.mod

@@ -10,6 +10,7 @@ require (
 	github.com/json-iterator/go v1.1.12
 	github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826
 	github.com/mzz2017/softwind v0.0.0-20230224125402-d460ce1c5b4b
+	github.com/okzk/sdnotify v0.0.0-20180710141335-d9becc38acbd
 	github.com/safchain/ethtool v0.0.0-20230116090318-67cc41908669
 	github.com/sirupsen/logrus v1.9.0
 	github.com/spf13/cobra v1.6.1

go.sum

@@ -71,6 +71,8 @@ github.com/mzz2017/softwind v0.0.0-20230224125402-d460ce1c5b4b/go.mod h1:V8GFOtd
 github.com/nxadm/tail v1.4.4/go.mod h1:kenIhsEOeOJmVchQTgglprH7qJGnHDVpk1VPCcaMI8A=
 github.com/nxadm/tail v1.4.8 h1:nPr65rt6Y5JFSKQO7qToXr7pePgD6Gwiw05lkbyAQTE=
 github.com/nxadm/tail v1.4.8/go.mod h1:+ncqLTQzXmGhMZNUePPaPqPvBxHAIsmXswZKocGu+AU=
+github.com/okzk/sdnotify v0.0.0-20180710141335-d9becc38acbd h1:+iAPaTbi1gZpcpDwe/BW1fx7Xoesv69hLNGPheoyhBs=
+github.com/okzk/sdnotify v0.0.0-20180710141335-d9becc38acbd/go.mod h1:4soZNh0zW0LtYGdQ416i0jO0EIqMGcbtaspRS4BDvRQ=
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/ginkgo v1.12.1/go.mod h1:zj2OWP4+oCPe1qIXoGWkgMRwljMUYCdkwsT2108oapk=
 github.com/onsi/ginkgo v1.16.5 h1:8xi0RTUf59SOSfEtZMvwTvXYMzG4gV23XVHOZiXNtnE=

install/dae.service

@@ -5,12 +5,13 @@ After=network-online.target docker.service
 Wants=network-online.target
 
 [Service]
-Type=simple
+Type=notify
 User=root
-LimitNPROC=500
+LimitNPROC=512
-LimitNOFILE=1000000
+LimitNOFILE=1048576
 ExecStartPre=/usr/bin/dae validate -c /etc/dae/config.dae
 ExecStart=/usr/bin/dae run --disable-timestamp -c /etc/dae/config.dae
+ExecReload=/usr/bin/dae reload $MAINPID
 Restart=on-abnormal
 
 [Install]