other: update version setting using git

Makefile

@@ -7,19 +7,7 @@ LOCALSTATEDIR ?= $(PREFIX)/var
 RUNSTATEDIR ?= $(LOCALSTATEDIR)/run
 GO ?= $(shell type -a -P go | head -n 1)
 
-# Set version variable
+VERSION ?= $(shell git describe --tags --dirty)
-ifeq ($(VERSION),)
-	COMMIT := $(shell git rev-parse --short HEAD)
-	TAG_COMMIT := $(shell git rev-list --abbrev-commit --tags --max-count=1)
-	TAG := $(shell git describe --abbrev=0 --tags ${TAG_COMMIT} 2>/dev/null || true)
-	VERSION := $(COMMIT)
-	ifeq ($(COMMIT), $(TAG_COMMIT))
-		VERSION := $(TAG)
-	endif
-	ifneq ($(shell git status --porcelain),)
-		VERSION := $(VERSION)-dirty
-	endif
-endif
 
 build:
 	mkdir -p build

services/lo-interface.esv

@@ -1,6 +1,5 @@
 name: lo-interface
 description: Enable loopback interface on boot
-dependencies: ["/usr/sbin/ip"]
 type: simple
 start_cmd: ip link set lo up
 exit_method: kill

src/ectl/go.mod

@@ -1,3 +1,8 @@
 module ectl
 
 go 1.23.4
+
+require (
+	github.com/spf13/pflag v1.0.10
+	gopkg.in/yaml.v3 v3.0.1
+)

src/ectl/go.sum

@@ -0,0 +1,6 @@
+github.com/spf13/pflag v1.0.10 h1:4EBh2KAYBwaONj6b2Ye1GiHfwjqyROoF4RwYO+vPwFk=
+github.com/spf13/pflag v1.0.10/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

src/ectl/main.go

@@ -1,18 +1,10 @@
 package main
 
 import (
-	"bytes"
-	"encoding/json"
-	"flag"
 	"fmt"
-	"io"
 	"log"
-	"net"
 	"os"
-	"path"
-	"strconv"
 	"syscall"
-	"time"
 )
 
 // Build-time variables
@@ -20,413 +12,43 @@ var version = "dev"
 var sysconfdir = "/etc/"
 var runstatedir = "/var/run/"
 
-var conn net.Conn
-
 func main() {
 
-	// Set and parse flags
+	// Show usage if no arguments specified
-	printVersion := flag.Bool("version", false, "print version and exit")
+	if len(os.Args) == 1 {
-	printJson := flag.Bool("json", false, "print output in json format")
-	flag.Parse()
-
-	// Dial esvm socket
-	dialSocket()
-	defer conn.Close()
-
-	if flag.NArg() < 1 {
 		printUsage()
-		os.Exit(1)
+		return
 	}
 
-	if *printVersion || flag.Args()[0] == "version" {
+	subcommand := os.Args[1]
+
+	switch subcommand {
+	case "v", "version":
 		fmt.Printf("Enit Control version %s\n", version)
-		return
+	case "shutdown", "poweroff", "halt":
-	} else if flag.Args()[0] == "help" {
-		printUsage()
-		return
-	} else if flag.Args()[0] == "shutdown" || flag.Args()[0] == "poweroff" || flag.Args()[0] == "halt" {
 		err := syscall.Kill(1, syscall.SIGUSR1)
 		if err != nil {
 			log.Fatalf("Could not send shutdown signal! Error: %s\n", err)
 		}
-		return
+	case "reboot", "restart", "reset":
-	} else if flag.Args()[0] == "reboot" || flag.Args()[0] == "restart" || flag.Args()[0] == "reset" {
 		err := syscall.Kill(1, syscall.SIGTERM)
 		if err != nil {
-			log.Fatalf("Could not send shutdown signal! Error: %s\n", err)
+			log.Fatalf("Could not send reboot signal! Error: %s\n", err)
 		}
-		return
+	case "sv", "service":
-	} else if flag.Args()[0] == "service" || flag.Args()[0] == "sv" {
+		handleServiceSubcommand()
-		if len(flag.Args()) <= 1 {
+	default:
-			fmt.Println("Usage: ectl service <reload/start/stop/enable/disable/status/list> [service]")
-			return
-		}
-		if flag.Arg(1) == "reload" {
-			type ServiceCommandJsonStruct struct {
-				Command string `json:"command"`
-				Service string `json:"service"`
-			}
-			serviceCommandJson := ServiceCommandJsonStruct{
-				Command: flag.Arg(1),
-			}
-
-			// Encode struct to json string
-			jsonData, err := json.Marshal(serviceCommandJson)
-			if err != nil {
-				log.Fatalf("Could not encode JSON data! Error: %s\n", err)
-			}
-
-			_, err = conn.Write(jsonData)
-			if err != nil {
-				log.Fatalf("Could not write JSON data to socket! Error: %s\n", err)
-			}
-
-			// Read data from the connection.
-			data, err := readAllConn(conn)
-			if err != nil {
-				log.Fatalf("Could not read data from socket! Error: %s\n", err)
-				return
-			}
-
-			// Print json data if flag is set
-			if *printJson {
-				fmt.Println(string(data))
-				return
-			}
-
-			// Decoode JSON data
-			var returnedJsonData map[string]any
-			err = json.Unmarshal(data, &returnedJsonData)
-			if err != nil {
-				log.Fatalf("Could not decode JSON data from connection!")
-			}
-
-			if err, ok := returnedJsonData["error"]; ok {
-				log.Fatal(err)
-			} else if msg, ok := returnedJsonData["success"]; ok {
-				fmt.Println(msg)
-			} else {
-				log.Fatal("Connection returned empty string!")
-			}
-
-			return
-		} else if flag.Arg(1) == "start" || flag.Arg(1) == "stop" || flag.Arg(1) == "restart" {
-			// Ensure service name argument has been set
-			if len(flag.Args()) <= 2 {
-				fmt.Printf("Usage: ectl service %s <service>\n", flag.Args()[1])
-				return
-			}
-
-			type ServiceCommandJsonStruct struct {
-				Command string `json:"command"`
-				Service string `json:"service"`
-			}
-			serviceCommandJson := ServiceCommandJsonStruct{
-				Command: flag.Arg(1),
-				Service: flag.Arg(2),
-			}
-
-			// Encode struct to json string
-			jsonData, err := json.Marshal(serviceCommandJson)
-			if err != nil {
-				log.Fatalf("Could not encode JSON data! Error: %s\n", err)
-			}
-
-			_, err = conn.Write(jsonData)
-			if err != nil {
-				log.Fatalf("Could not write JSON data to socket! Error: %s\n", err)
-			}
-
-			// Read data from the connection.
-			data, err := readAllConn(conn)
-			if err != nil {
-				log.Fatalf("Could not read data from socket! Error: %s\n", err)
-				return
-			}
-
-			// Print json data if flag is set
-			if *printJson {
-				fmt.Println(string(data))
-				return
-			}
-
-			// Decoode JSON data
-			var returnedJsonData map[string]any
-			err = json.Unmarshal(data, &returnedJsonData)
-			if err != nil {
-				log.Fatalf("Could not decode JSON data from connection!")
-			}
-
-			if err, ok := returnedJsonData["error"]; ok {
-				log.Fatal(err)
-			} else if msg, ok := returnedJsonData["success"]; ok {
-				fmt.Println(msg)
-			} else {
-				log.Fatal("Connection returned empty string!")
-			}
-
-			return
-		} else if flag.Arg(1) == "enable" || flag.Arg(1) == "disable" {
-			// Ensure service name argument has been set
-			if len(flag.Args()) <= 2 {
-				fmt.Printf("Usage: ectl service %s <service> [stage]\n", flag.Args()[1])
-				return
-			}
-
-			// Get service stage
-			stage := 3
-			if len(flag.Args()) > 3 {
-				flagStr := flag.Arg(3)
-				_stage, err := strconv.ParseInt(flagStr, 10, 32)
-				if err != nil {
-					log.Fatalf("Error: could not parse stage number: %s", err)
-				}
-				stage = int(_stage)
-			} else if flag.Arg(1) == "disable" {
-				stage = 0
-			}
-
-			type ServiceCommandJsonStruct struct {
-				Command string `json:"command"`
-				Service string `json:"service"`
-				Stage   int    `json:"stage"`
-			}
-			serviceCommandJson := ServiceCommandJsonStruct{
-				Command: "set_enabled",
-				Service: flag.Arg(2),
-				Stage:   stage,
-			}
-
-			// Encode struct to json string
-			jsonData, err := json.Marshal(serviceCommandJson)
-			if err != nil {
-				log.Fatalf("Could not encode JSON data! Error: %s\n", err)
-			}
-
-			_, err = conn.Write(jsonData)
-			if err != nil {
-				log.Fatalf("Could not write JSON data to socket! Error: %s\n", err)
-			}
-
-			// Read data from the connection.
-			data, err := readAllConn(conn)
-			if err != nil {
-				log.Fatalf("Could not read data from socket! Error: %s\n", err)
-				return
-			}
-
-			// Print json data if flag is set
-			if *printJson {
-				fmt.Println(string(data))
-				return
-			}
-
-			// Decoode JSON data
-			var returnedJsonData map[string]any
-			err = json.Unmarshal(data, &returnedJsonData)
-			if err != nil {
-				log.Fatalf("Could not decode JSON data from connection!")
-			}
-
-			if err, ok := returnedJsonData["error"]; ok {
-				log.Fatal(err)
-			} else if msg, ok := returnedJsonData["success"]; ok {
-				fmt.Println(msg)
-			} else {
-				log.Fatal("Connection returned empty string!")
-			}
-
-			return
-		} else if flag.Args()[1] == "status" {
-			// Ensure service name argument has been set
-			if len(flag.Args()) <= 2 {
-				fmt.Printf("Usage: ectl service %s <service>\n", flag.Args()[1])
-				return
-			}
-
-			type ServiceCommandJsonStruct struct {
-				Command string `json:"command"`
-				Service string `json:"service"`
-			}
-			serviceCommandJson := ServiceCommandJsonStruct{
-				Command: flag.Arg(1),
-				Service: flag.Arg(2),
-			}
-
-			// Encode struct to json string
-			jsonData, err := json.Marshal(serviceCommandJson)
-			if err != nil {
-				log.Fatalf("Could not encode JSON data! Error: %s\n", err)
-			}
-
-			_, err = conn.Write(jsonData)
-			if err != nil {
-				log.Fatalf("Could not write JSON data to socket! Error: %s\n", err)
-			}
-
-			// Read data from the connection.
-			data, err := readAllConn(conn)
-			if err != nil {
-				log.Fatalf("Could not read data from socket! Error: %s\n", err)
-				return
-			}
-
-			// Print json data if flag is set
-			if *printJson {
-				fmt.Println(string(data))
-				return
-			}
-
-			// Decoode JSON data
-			var returnedJsonData map[string]any
-			err = json.Unmarshal(data, &returnedJsonData)
-			if err != nil {
-				log.Fatalf("Could not decode JSON data from connection!")
-			}
-
-			if err, ok := returnedJsonData["error"]; ok {
-				log.Fatal(err)
-			}
-
-			serviceState := returnedJsonData["state"].(string)
-			serviceDescription := returnedJsonData["description"].(string)
-			serviceEnabled := returnedJsonData["is_enabled"].(bool)
-			serviceStage := int(returnedJsonData["stage"].(float64))
-			processID := int(returnedJsonData["process_id"].(float64))
-
-			fmt.Printf("Name: %s\n", flag.Arg(2))
-			fmt.Printf("Description: %s\n", serviceDescription)
-			fmt.Printf("State: %s\n", serviceState)
-			if serviceEnabled {
-				fmt.Printf("Enabled: %t (Stage %d)\n", serviceEnabled, serviceStage)
-			} else {
-				fmt.Printf("Enabled: %t\n", serviceEnabled)
-			}
-			if serviceState == "running" {
-				fmt.Printf("Process ID: %d\n", processID)
-			}
-
-			return
-		} else if flag.Arg(1) == "list" {
-			type ServiceCommandJsonStruct struct {
-				Command string `json:"command"`
-			}
-			serviceCommandJson := ServiceCommandJsonStruct{
-				Command: flag.Arg(1),
-			}
-
-			// Encode struct to json string
-			jsonData, err := json.Marshal(serviceCommandJson)
-			if err != nil {
-				log.Fatalf("Could not encode JSON data! Error: %s\n", err)
-			}
-
-			_, err = conn.Write(jsonData)
-			if err != nil {
-				log.Fatalf("Could not write JSON data to socket! Error: %s\n", err)
-			}
-
-			// Read data from the connection.
-			data, err := readAllConn(conn)
-			if err != nil {
-				log.Fatalf("Could not read data from socket! Error: %s\n", err)
-				return
-			}
-
-			// Print json data if flag is set
-			if *printJson {
-				fmt.Println(string(data))
-				return
-			}
-
-			// Decoode JSON data
-			var returnedJsonData map[string]any
-			err = json.Unmarshal(data, &returnedJsonData)
-			if err != nil {
-				log.Fatalf("Could not decode JSON data from connection!")
-			}
-
-			if err, ok := returnedJsonData["error"]; ok {
-				log.Fatal(err)
-			}
-
-			for _, serviceMap := range returnedJsonData["services"].([]any) {
-				serviceName := serviceMap.(map[string]any)["name"].(string)
-				serviceDescription := serviceMap.(map[string]any)["description"].(string)
-				serviceState := serviceMap.(map[string]any)["state"].(string)
-				serviceEnabled := serviceMap.(map[string]any)["is_enabled"].(bool)
-				serviceStage := int(serviceMap.(map[string]any)["stage"].(float64))
-				processID := int(serviceMap.(map[string]any)["process_id"].(float64))
-
-				fmt.Printf("Name: %s\n", serviceName)
-				fmt.Printf("Description: %s\n", serviceDescription)
-				fmt.Printf("State: %s\n", serviceState)
-				if serviceEnabled {
-					fmt.Printf("Enabled: %t (Stage %d)\n", serviceEnabled, serviceStage)
-				} else {
-					fmt.Printf("Enabled: %t\n", serviceEnabled)
-				}
-				if serviceState == "running" {
-					fmt.Printf("Process ID: %d\n", processID)
-				}
-				fmt.Println()
-			}
-
-			return
-		}
-	}
-
 		printUsage()
 		os.Exit(1)
+	}
 }
 
 func printUsage() {
-	fmt.Println("Available sucommands:")
+	fmt.Println("Usage: ectl <subcommand> [options]")
-	fmt.Println("ectl version | Show enit version")
+	fmt.Println("Description: Shutdown, reboot and manage system services")
-	fmt.Println("ectl shutdown/poweroff/halt | Shutdown the system")
+	fmt.Println("Sucommands:")
-	fmt.Println("ectl reboot/restart | Reboot the system")
+	fmt.Println("  v, version                 Show enit version")
-	fmt.Println("ectl help | Show command explanations")
+	fmt.Println("  shutdown, poweroff, halt   Shutdown the system")
-	fmt.Println("ectl sv/service start <service> | Start a service")
+	fmt.Println("  reboot, restart, reset     Reboot the system")
-	fmt.Println("ectl sv/service stop <service> | Stop a service")
+	fmt.Println("  sv, service                Manage system services")
-	fmt.Println("ectl sv/service enable <service> | Enable a service at startup")
-	fmt.Println("ectl sv/service disable <service> | Disable a service at startup")
-	fmt.Println("ectl sv/service status <service> | Show service status")
-	fmt.Println("ectl sv/service list | Show all enabled services")
-}
-
-func dialSocket() {
-	if _, err := os.Stat(path.Join(runstatedir, "esvm/esvm.sock")); err != nil {
-		log.Fatalf("Could not find esvm.sock! Error: %s\n", err)
-	}
-
-	var err error
-	conn, err = net.Dial("unix", path.Join(runstatedir, "esvm/esvm.sock"))
-	if err != nil {
-		log.Fatalf("Failed to connect to esvm.sock! Error: %s\n", err)
-	}
-
-	if err := conn.SetDeadline(time.Now().Add(5 * time.Second)); err != nil {
-		log.Fatalf("Failed to set write deadline! Error: %s\n", err)
-	}
-}
-
-func readAllConn(conn net.Conn) ([]byte, error) {
-	var buf bytes.Buffer
-
-	for {
-		dataChunk := make([]byte, 1024)
-
-		n, err := conn.Read(dataChunk)
-		if err != nil && err != io.EOF {
-			return nil, err
-		}
-
-		buf.Write(dataChunk[:n])
-
-		if n < 1024 {
-			break
-		}
-	}
-
-	return buf.Bytes(), nil
 }

src/ectl/sv_subcommand.go

@@ -0,0 +1,476 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"log"
+	"net"
+	"os"
+	"path"
+	"strconv"
+	"strings"
+	"time"
+
+	flag "github.com/spf13/pflag"
+)
+
+var currentFlagSet *flag.FlagSet
+var conn net.Conn
+
+func handleServiceSubcommand() {
+	if len(os.Args) == 2 {
+		printSvUsage()
+		return
+	}
+
+	subcommand := os.Args[2]
+
+	switch subcommand {
+	case "start", "stop", "restart":
+		// Setup flags and help
+		currentFlagSet = flag.NewFlagSet(subcommand, flag.ExitOnError)
+		currentFlagSet.BoolP("json", "j", false, "Return output in json format")
+		setupFlagsAndHelp(currentFlagSet, fmt.Sprintf("ectl %s %s <options> <service>", os.Args[1], subcommand), fmt.Sprintf("%s the specified service", strings.Title(subcommand)), os.Args[3:])
+
+		// Dial esvm socket
+		dialSocket()
+		defer conn.Close()
+
+		startStopRestartService(subcommand)
+	case "enable", "disable":
+		// Setup flags and help
+		currentFlagSet = flag.NewFlagSet(subcommand, flag.ExitOnError)
+		currentFlagSet.BoolP("json", "j", false, "Return output in json format")
+		setupFlagsAndHelp(currentFlagSet, fmt.Sprintf("ectl %s %s <options> <service>", os.Args[1], subcommand), fmt.Sprintf("%s the specified service", strings.Title(subcommand)), os.Args[3:])
+
+		enableDisableService(subcommand)
+	case "status":
+		// Setup flags and help
+		currentFlagSet = flag.NewFlagSet("status", flag.ExitOnError)
+		currentFlagSet.BoolP("json", "j", false, "Return output in json format")
+		setupFlagsAndHelp(currentFlagSet, fmt.Sprintf("ectl %s status <options> <service>", os.Args[1]), "Show service status", os.Args[3:])
+
+		// Dial esvm socket
+		dialSocket()
+		defer conn.Close()
+
+		showServiceStatus()
+	case "list":
+		// Setup flags and help
+		currentFlagSet = flag.NewFlagSet("list", flag.ExitOnError)
+		currentFlagSet.BoolP("json", "j", false, "Return output in json format")
+		setupFlagsAndHelp(currentFlagSet, fmt.Sprintf("ectl %s reload <options>", os.Args[1]), "List all services", os.Args[3:])
+
+		// Dial esvm socket
+		dialSocket()
+		defer conn.Close()
+
+		listAllServices()
+	case "reload":
+		// Setup flags and help
+		currentFlagSet = flag.NewFlagSet("reload", flag.ExitOnError)
+		currentFlagSet.BoolP("json", "j", false, "Return output in json format")
+		setupFlagsAndHelp(currentFlagSet, fmt.Sprintf("ectl %s reload <options>", os.Args[1]), "Reload all services", os.Args[3:])
+
+		// Dial esvm socket
+		dialSocket()
+		defer conn.Close()
+
+		reloadAllServices()
+	default:
+		printSvUsage()
+		os.Exit(1)
+	}
+}
+
+func startStopRestartService(subcommand string) {
+	// Get flags
+	printJson, _ := currentFlagSet.GetBool("json")
+
+	// Ensure service name argument has been set
+	if currentFlagSet.NArg() == 0 {
+		fmt.Printf("Usage: ectl service %s <service>\n", subcommand)
+		return
+	}
+
+	type ServiceCommandJsonStruct struct {
+		Command string `json:"command"`
+		Service string `json:"service"`
+	}
+	serviceCommandJson := ServiceCommandJsonStruct{
+		Command: subcommand,
+		Service: currentFlagSet.Arg(0),
+	}
+
+	// Encode struct to json string
+	jsonData, err := json.Marshal(serviceCommandJson)
+	if err != nil {
+		log.Fatalf("Could not encode JSON data! Error: %s\n", err)
+	}
+
+	_, err = conn.Write(jsonData)
+	if err != nil {
+		log.Fatalf("Could not write JSON data to socket! Error: %s\n", err)
+	}
+
+	// Read data from the connection.
+	data, err := readAllConn(conn)
+	if err != nil {
+		log.Fatalf("Could not read data from socket! Error: %s\n", err)
+		return
+	}
+
+	// Print json data if flag is set
+	if printJson {
+		fmt.Println(string(data))
+		return
+	}
+
+	// Decoode JSON data
+	var returnedJsonData map[string]any
+	err = json.Unmarshal(data, &returnedJsonData)
+	if err != nil {
+		log.Fatalf("Could not decode JSON data from connection!")
+	}
+
+	if err, ok := returnedJsonData["error"]; ok {
+		log.Fatal(err)
+	} else if msg, ok := returnedJsonData["success"]; ok {
+		fmt.Println(msg)
+	} else {
+		log.Fatal("Connection returned empty string!")
+	}
+}
+
+func enableDisableService(subcommand string) {
+	// Get flags
+	printJson, _ := currentFlagSet.GetBool("json")
+
+	// Ensure service name argument has been set
+	if currentFlagSet.NArg() == 0 {
+		fmt.Printf("Usage: ectl service %s <service> [stage]\n", subcommand)
+		return
+	}
+
+	service := currentFlagSet.Arg(0)
+
+	// Get service stage
+	stage := 3
+	if subcommand == "disable" {
+		stage = 0
+	} else if len(currentFlagSet.Args()) > 1 {
+		flagStr := currentFlagSet.Arg(1)
+		_stage, err := strconv.ParseInt(flagStr, 10, 32)
+		if err != nil {
+			log.Fatalf("Error: could not parse stage number: %s", err)
+		}
+		stage = int(_stage)
+	}
+
+	verb := "enabled"
+	if stage == 0 {
+		verb = "disabled"
+	}
+
+	// Return if service is already enabled
+	if _, enabledStage := isServiceEnabled(service); enabledStage == stage {
+		if printJson {
+			fmt.Printf("{\"success\":\"Service (%s) is already %s\"}\n", service, verb)
+		} else {
+			fmt.Printf("Service (%s) is already %s\n", service, verb)
+		}
+		return
+	}
+
+	// Enable service
+	err := setServiceEnabled(service, stage)
+	if err != nil {
+		verb := "enable"
+		if stage == 0 {
+			verb = "disable"
+		}
+
+		if printJson {
+			fmt.Printf("{\"error\":\"Could not %s service! Error: %s\"}\n", verb, err)
+		} else {
+			fmt.Printf("Could not %s service! Error: %s\n", verb, err)
+		}
+		os.Exit(1)
+	}
+
+	if printJson {
+		fmt.Printf("{\"success\":\"Service (%s) was %s sucessfully\"}\n", service, verb)
+		return
+	} else {
+		fmt.Printf("Service (%s) was %s sucessfully\n", service, verb)
+	}
+}
+
+func showServiceStatus() {
+	// Get flags
+	printJson, _ := currentFlagSet.GetBool("json")
+
+	// Ensure service name argument has been set
+	if len(currentFlagSet.Args()) == 0 {
+		fmt.Println("Usage: ectl service status <service>")
+		return
+	}
+
+	type ServiceCommandJsonStruct struct {
+		Command string `json:"command"`
+		Service string `json:"service"`
+	}
+	serviceCommandJson := ServiceCommandJsonStruct{
+		Command: "status",
+		Service: currentFlagSet.Arg(0),
+	}
+
+	// Encode struct to json string
+	jsonData, err := json.Marshal(serviceCommandJson)
+	if err != nil {
+		log.Fatalf("Could not encode JSON data! Error: %s\n", err)
+	}
+
+	_, err = conn.Write(jsonData)
+	if err != nil {
+		log.Fatalf("Could not write JSON data to socket! Error: %s\n", err)
+	}
+
+	// Read data from the connection.
+	data, err := readAllConn(conn)
+	if err != nil {
+		log.Fatalf("Could not read data from socket! Error: %s\n", err)
+		return
+	}
+
+	// Decoode JSON data
+	var returnedJsonData map[string]any
+	err = json.Unmarshal(data, &returnedJsonData)
+	if err != nil {
+		log.Fatalf("Could not decode JSON data from connection!")
+	}
+
+	if err, ok := returnedJsonData["error"]; ok {
+		if printJson {
+			fmt.Println(string(data))
+			os.Exit(1)
+		} else {
+			log.Fatal(err)
+		}
+	}
+
+	// Set is_enabled and stage fields in json data
+	returnedJsonData["is_enabled"], returnedJsonData["stage"] = isServiceEnabled(currentFlagSet.Arg(0))
+
+	// Print json data if flag is set
+	if printJson {
+		data, _ = json.Marshal(returnedJsonData)
+		fmt.Println(string(data))
+		return
+	}
+
+	serviceState := returnedJsonData["state"].(string)
+	serviceDescription := returnedJsonData["description"].(string)
+	serviceEnabled := returnedJsonData["is_enabled"].(bool)
+	serviceStage := returnedJsonData["stage"].(int)
+	processID := int(returnedJsonData["process_id"].(float64))
+
+	fmt.Printf("Name: %s\n", currentFlagSet.Arg(0))
+	fmt.Printf("Description: %s\n", serviceDescription)
+	fmt.Printf("State: %s\n", serviceState)
+	if serviceEnabled {
+		fmt.Printf("Enabled: %t (Stage %d)\n", serviceEnabled, serviceStage)
+	} else {
+		fmt.Printf("Enabled: %t\n", serviceEnabled)
+	}
+	if serviceState == "running" {
+		fmt.Printf("Process ID: %d\n", processID)
+	}
+}
+
+func listAllServices() {
+	// Get flags
+	printJson, _ := currentFlagSet.GetBool("json")
+
+	type ServiceCommandJsonStruct struct {
+		Command string `json:"command"`
+	}
+	serviceCommandJson := ServiceCommandJsonStruct{
+		Command: "list",
+	}
+
+	// Encode struct to json string
+	jsonData, err := json.Marshal(serviceCommandJson)
+	if err != nil {
+		log.Fatalf("Could not encode JSON data! Error: %s\n", err)
+	}
+
+	_, err = conn.Write(jsonData)
+	if err != nil {
+		log.Fatalf("Could not write JSON data to socket! Error: %s\n", err)
+	}
+
+	// Read data from the connection.
+	data, err := readAllConn(conn)
+	if err != nil {
+		log.Fatalf("Could not read data from socket! Error: %s\n", err)
+		return
+	}
+
+	// Print json data if flag is set
+	if printJson {
+		fmt.Println(string(data))
+		return
+	}
+
+	// Decoode JSON data
+	var returnedJsonData map[string]any
+	err = json.Unmarshal(data, &returnedJsonData)
+	if err != nil {
+		log.Fatalf("Could not decode JSON data from connection!")
+	}
+
+	if err, ok := returnedJsonData["error"]; ok {
+		log.Fatal(err)
+	}
+
+	for _, serviceMap := range returnedJsonData["services"].([]any) {
+		serviceName := serviceMap.(map[string]any)["name"].(string)
+		serviceDescription := serviceMap.(map[string]any)["description"].(string)
+		serviceState := serviceMap.(map[string]any)["state"].(string)
+		serviceEnabled := serviceMap.(map[string]any)["is_enabled"].(bool)
+		serviceStage := int(serviceMap.(map[string]any)["stage"].(float64))
+		processID := int(serviceMap.(map[string]any)["process_id"].(float64))
+
+		fmt.Printf("Name: %s\n", serviceName)
+		fmt.Printf("Description: %s\n", serviceDescription)
+		fmt.Printf("State: %s\n", serviceState)
+		if serviceEnabled {
+			fmt.Printf("Enabled: %t (Stage %d)\n", serviceEnabled, serviceStage)
+		} else {
+			fmt.Printf("Enabled: %t\n", serviceEnabled)
+		}
+		if serviceState == "running" {
+			fmt.Printf("Process ID: %d\n", processID)
+		}
+		fmt.Println()
+	}
+}
+
+func reloadAllServices() {
+	// Get flags
+	printJson, _ := currentFlagSet.GetBool("json")
+
+	type ServiceCommandJsonStruct struct {
+		Command string `json:"command"`
+		Service string `json:"service"`
+	}
+	serviceCommandJson := ServiceCommandJsonStruct{
+		Command: "reload",
+	}
+
+	// Encode struct to json string
+	jsonData, err := json.Marshal(serviceCommandJson)
+	if err != nil {
+		log.Fatalf("Could not encode JSON data! Error: %s\n", err)
+	}
+
+	_, err = conn.Write(jsonData)
+	if err != nil {
+		log.Fatalf("Could not write JSON data to socket! Error: %s\n", err)
+	}
+
+	// Read data from the connection.
+	data, err := readAllConn(conn)
+	if err != nil {
+		log.Fatalf("Could not read data from socket! Error: %s\n", err)
+		return
+	}
+
+	// Print json data if flag is set
+	if printJson {
+		fmt.Println(string(data))
+		return
+	}
+
+	// Decoode JSON data
+	var returnedJsonData map[string]any
+	err = json.Unmarshal(data, &returnedJsonData)
+	if err != nil {
+		log.Fatalf("Could not decode JSON data from connection!")
+	}
+
+	if err, ok := returnedJsonData["error"]; ok {
+		log.Fatal(err)
+	} else if msg, ok := returnedJsonData["success"]; ok {
+		fmt.Println(msg)
+	} else {
+		log.Fatal("Connection returned empty string!")
+	}
+}
+
+func printSvUsage() {
+	fmt.Printf("Usage: ectl %s <subcommand> [options] [service]\n", os.Args[1])
+	fmt.Println("Description: Manage system services")
+	fmt.Println("Sucommands:")
+	fmt.Println("  start     Start service")
+	fmt.Println("  stop      Stop service")
+	fmt.Println("  restart   Restart service")
+	fmt.Println("  enable    Enable service")
+	fmt.Println("  disable   Disable service")
+	fmt.Println("  status    Show service status")
+	fmt.Println("  list      List services")
+	fmt.Println("  reload    Reload services")
+}
+
+func setupFlagsAndHelp(flagset *flag.FlagSet, usage, desc string, args []string) {
+	flagset.Usage = func() {
+		fmt.Println("Usage: " + usage)
+		fmt.Println("Description: " + desc)
+		fmt.Println("Options:")
+		if !flagset.HasFlags() {
+			fmt.Println("  No flags defined")
+		}
+		flagset.PrintDefaults()
+	}
+	flagset.Parse(args)
+}
+
+func dialSocket() {
+	if _, err := os.Stat(path.Join(runstatedir, "esvm/esvm.sock")); err != nil {
+		log.Fatalf("Could not find esvm.sock! Error: %s\n", err)
+	}
+
+	var err error
+	conn, err = net.Dial("unix", path.Join(runstatedir, "esvm/esvm.sock"))
+	if err != nil {
+		log.Fatalf("Failed to connect to esvm.sock! Error: %s\n", err)
+	}
+
+	if err := conn.SetDeadline(time.Now().Add(30 * time.Second)); err != nil {
+		log.Fatalf("Failed to set write deadline! Error: %s\n", err)
+	}
+}
+
+func readAllConn(conn net.Conn) ([]byte, error) {
+	var buf bytes.Buffer
+
+	for {
+		dataChunk := make([]byte, 1024)
+
+		n, err := conn.Read(dataChunk)
+		if err != nil && err != io.EOF {
+			return nil, err
+		}
+
+		buf.Write(dataChunk[:n])
+
+		if n < 1024 {
+			break
+		}
+	}
+
+	return buf.Bytes(), nil
+}

src/ectl/utils.go

@@ -0,0 +1,88 @@
+package main
+
+import (
+	"os"
+	"path"
+	"slices"
+	"strings"
+
+	"gopkg.in/yaml.v3"
+)
+
+func isServiceEnabled(service string) (bool, int) {
+	for stage, services := range readEnabledServices() {
+		if slices.Contains(services, service) {
+			return true, stage
+		}
+	}
+
+	return false, 0
+}
+
+func setServiceEnabled(service string, stage int) error {
+	// Get current service enabled status
+	_, s := isServiceEnabled(service)
+
+	// Return if service is already in correct state
+	if s == stage {
+		return nil
+	}
+
+	EnabledServices := readEnabledServices()
+
+	// Remove service from current stage
+	EnabledServices[s] = slices.DeleteFunc(EnabledServices[s], func(name string) bool {
+		return name == service
+	})
+	if len(EnabledServices[s]) == 0 {
+		delete(EnabledServices, s)
+	}
+
+	// Add service to stage
+	if stage != 0 {
+		EnabledServices[stage] = append(EnabledServices[stage], service)
+	}
+
+	// Save enabled services to file
+	data, err := yaml.Marshal(EnabledServices)
+	if err != nil {
+		return err
+	}
+	err = os.WriteFile(path.Join(sysconfdir, "esvm/enabled-services.yml"), data, 0644)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func readEnabledServices() (EnabledServices map[int][]string) {
+	EnabledServices = make(map[int][]string)
+
+	data, err := os.ReadFile(path.Join(sysconfdir, "esvm/enabled-services.yml"))
+	if err != nil {
+		return EnabledServices
+	}
+
+	err = yaml.Unmarshal(data, &EnabledServices)
+	if err != nil {
+		// Assume old plain text format
+		for _, service := range strings.Split(strings.TrimSpace(string(data)), "\n") {
+			EnabledServices[3] = append(EnabledServices[3], service)
+		}
+
+		// Update enabled-services.yml file
+		data, err := yaml.Marshal(EnabledServices)
+		if err != nil {
+			return EnabledServices
+		}
+		err = os.WriteFile(path.Join(sysconfdir, "esvm/enabled-services.yml"), data, 0644)
+		if err != nil {
+			return EnabledServices
+		}
+
+		return EnabledServices
+	}
+
+	return EnabledServices
+}

src/enit/go.mod

@@ -2,4 +2,7 @@ module enit
 
 go 1.23.4
 
-require golang.org/x/sys v0.31.0
+require (
+	github.com/mitchellh/go-ps v1.0.0
+	golang.org/x/sys v0.31.0
+)

src/enit/go.sum

@@ -1,2 +1,4 @@
+github.com/mitchellh/go-ps v1.0.0 h1:i6ampVEEF4wQFF+bkYfwYgY+F/uYJDktmvLPf7qIgjc=
+github.com/mitchellh/go-ps v1.0.0/go.mod h1:J4lOc8z8yJs6vUwklHw2XEIiT4z4C40KtWVN3nvg8Pg=
 golang.org/x/sys v0.31.0 h1:ioabZlmFYtWhL+TRYpcnNlLwhyxaM9kWTDEmfnprqik=
 golang.org/x/sys v0.31.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=

src/enit/main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"bufio"
 	"flag"
 	"fmt"
 	"log"
@@ -12,6 +13,8 @@ import (
 	"syscall"
 	"time"
 	"unsafe"
+
+	"github.com/mitchellh/go-ps"
 )
 
 // Build-time variables
@@ -78,42 +81,42 @@ func mountVirtualFilesystems() {
 
 	// Mount /proc
 	if err := mount("proc", "/proc", "proc", commonOptions+",nodev,noexec", false); err != nil {
-		panic(err)
+		printErrorAndReboot("Error: could not mount /proc: %s", err)
 	}
 
 	// Mount /sys
 	if err := mount("sys", "/sys", "sysfs", commonOptions+",nodev,noexec", false); err != nil {
-		panic(err)
+		printErrorAndReboot("Error: could not mount /sys: %s", err)
 	}
 
 	// Mount /dev
 	if err := mount("dev", "/dev", "devtmpfs", commonOptions+",mode=755,inode64", false); err != nil {
-		panic(err)
+		printErrorAndReboot("Error: could not mount /dev: %s", err)
 	}
 
 	// Mount /run
 	if err := mount("run", "/run", "tmpfs", commonOptions+",nodev,mode=755,inode64", false); err != nil {
-		panic(err)
+		printErrorAndReboot("Error: could not mount /run: %s", err)
 	}
 
 	// Mount /dev/pts
 	if err := mount("devpts", "/dev/pts", "devpts", commonOptions+",gid=5,mode=620,ptmxmode=000", true); err != nil {
-		panic(err)
+		printErrorAndReboot("Error: could not mount /dev/pts: %s", err)
 	}
 
 	// Mount /dev/shm
 	if err := mount("shm", "/dev/shm", "tmpfs", commonOptions+",nodev,inode64", true); err != nil {
-		panic(err)
+		printErrorAndReboot("Error: could not mount /dev/shm: %s", err)
 	}
 
 	// Mount securityfs
 	if err := mount("securityfs", "/sys/kernel/security", "securityfs", commonOptions, false); err != nil {
-		panic(err)
+		printErrorAndReboot("Error: could not mount /sys/kernel/security: %s", err)
 	}
 
 	// Mount cgroups v2
 	if err := mount("cgroup2", "/sys/fs/cgroup", "cgroup2", commonOptions+",noexec,nsdelegate,memory_recursiveprot", false); err != nil {
-		panic(err)
+		printErrorAndReboot("Error: could not mount /sys/fs/cgroup: %s", err)
 	}
 
 	fmt.Println("Done.")
@@ -122,9 +125,8 @@ func mountVirtualFilesystems() {
 func mountFilesystems() {
 	fmt.Print("Mounting fstab entries... ")
 
-	if err := mountFstabEntries(); err != nil {
+	if err, line := mountFstabEntries(); err != nil {
-		log.Println("Could not mount fstab entries!")
+		printErrorAndReboot("Error: could not mount fstab entry on line %d: %s", line, err)
-		panic(err)
 	}
 
 	fmt.Println("Done.")
@@ -138,8 +140,7 @@ func startServiceManager() {
 	cmd.Stderr = os.Stderr
 	err := cmd.Start()
 	if err != nil {
-		log.Println("Could not initialize service manager!")
+		printErrorAndReboot("Error: could not initialize service manager: %s", err)
-		panic(err)
 	}
 	serviceManagerPid = cmd.Process.Pid
 
@@ -174,7 +175,7 @@ func stopServiceManager() {
 		case <-exited:
 			fmt.Println("Done.")
 			return
-		case <-time.After(60 * time.Second):
+		case <-time.After(300 * time.Second):
 			log.Println("Could not stop service manager!")
 			syscall.Kill(serviceManagerPid, syscall.SIGKILL)
 			return
@@ -185,6 +186,42 @@ func stopServiceManager() {
 
 }
 
+func killProcesses() {
+	fmt.Print("Killing processes... ")
+
+	// Send sigterm to all processes
+	processes, err := ps.Processes()
+	if err != nil {
+		return
+	}
+	for _, process := range processes {
+		sid, _, _ := syscall.Syscall(syscall.SYS_GETSID, uintptr(process.Pid()), 0, 0)
+		if process.Pid() == 1 || sid == 1 {
+			continue
+		}
+
+		syscall.Kill(process.Pid(), syscall.SIGTERM)
+	}
+
+	time.Sleep(1 * time.Second)
+
+	// Send sigkill to remaining processes
+	processes, err = ps.Processes()
+	if err != nil {
+		return
+	}
+	for _, process := range processes {
+		sid, _, _ := syscall.Syscall(syscall.SYS_GETSID, uintptr(process.Pid()), 0, 0)
+		if process.Pid() == 1 || sid == 1 {
+			continue
+		}
+
+		syscall.Kill(process.Pid(), syscall.SIGKILL)
+	}
+
+	fmt.Println("Done.")
+}
+
 func setHostname() {
 	fmt.Print("Setting hostname... ")
 
@@ -233,9 +270,13 @@ func shutdownSystem() {
 	fmt.Println("Shutting down...")
 
 	stopServiceManager()
+	killProcesses()
+	unmountFilesystems()
+	remountRootReadonly()
 
-	fmt.Println("Syncing disks...")
+	fmt.Print("Syncing disks... ")
 	syscall.Sync()
+	fmt.Println("Done.")
 
 	fmt.Println("Sending shutdown syscall...")
 	err := syscall.Reboot(syscall.LINUX_REBOOT_CMD_POWER_OFF)
@@ -248,9 +289,13 @@ func rebootSystem() {
 	fmt.Println("Rebooting...")
 
 	stopServiceManager()
+	killProcesses()
+	unmountFilesystems()
+	remountRootReadonly()
 
-	fmt.Println("Syncing disks...")
+	fmt.Print("Syncing disks... ")
 	syscall.Sync()
+	fmt.Println("Done.")
 
 	fmt.Println("Sending reboot syscall...")
 	err := syscall.Reboot(syscall.LINUX_REBOOT_CMD_RESTART)
@@ -258,3 +303,10 @@ func rebootSystem() {
 		panic(err)
 	}
 }
+
+func printErrorAndReboot(format string, v ...any) {
+	log.Printf(format, v...)
+	fmt.Println("Press 'Enter' to reboot...")
+	bufio.NewReader(os.Stdin).ReadBytes('\n')
+	rebootSystem()
+}

src/enit/mount.go

@@ -1,10 +1,14 @@
 package main
 
 import (
+	"errors"
 	"fmt"
+	"log"
 	"os"
 	"slices"
 	"strings"
+	"syscall"
+	"time"
 	"unsafe"
 
 	"golang.org/x/sys/unix"
@@ -28,12 +32,14 @@ var flagsEquivalence = map[string]uintptr{
 }
 
 // Split string flags to mount flags and mount data
-func convertMountOptions(options string) (flags []uintptr, data string) {
+func convertMountOptions(options string) (flags []uintptr, data string, extra []string) {
 	for _, flag := range strings.Split(options, ",") {
 		if unixFlag, ok := flagsEquivalence[flag]; ok {
 			flags = append(flags, unixFlag)
 		} else {
-			if data == "" {
+			if flag == "noauto" || flag == "nofail" {
+				extra = append(extra, flag)
+			} else if data == "" {
 				data = flag
 			} else {
 				data += "," + flag
@@ -41,7 +47,7 @@ func convertMountOptions(options string) (flags []uintptr, data string) {
 		}
 	}
 
-	return flags, data
+	return flags, data, extra
 }
 
 // Combine a unix flag slice or array into a single uintptr
@@ -84,7 +90,7 @@ func isMountpoint(mountpoint string) bool {
 }
 
 func mount(source, target, fstype string, options string, mkdir bool) error {
-	flags, data := convertMountOptions(options)
+	flags, data, _ := convertMountOptions(options)
 
 	if isMountpoint(target) && !slices.Contains(flags, unix.MS_REMOUNT) {
 		flags = append(flags, unix.MS_REMOUNT)
@@ -104,34 +110,68 @@ func mount(source, target, fstype string, options string, mkdir bool) error {
 	return nil
 }
 
-func mountFstabEntries() error {
+func mountFstabEntries() (error, int) {
 	if _, err := os.Stat("/etc/fstab"); os.IsNotExist(err) {
-		return nil
+		return nil, 0
 	} else if err != nil {
-		return err
+		return err, 0
 	}
 
 	bytes, err := os.ReadFile("/etc/fstab")
 	if err != nil {
-		return err
+		return err, 0
 	}
 
 	swapPriority := -2
 
-	for _, line := range strings.Split(string(bytes), "\n") {
+	for i, line := range strings.Split(string(bytes), "\n") {
 		line = strings.TrimSpace(line)
 		if strings.HasPrefix(line, "#") || line == "" {
 			continue
 		}
 
-		source := strings.Split(line, " ")[0]
+		// Get fields from line
-		target := strings.Split(line, " ")[1]
+		fields := []string{}
-		fstype := strings.Split(line, " ")[2]
+		sb := &strings.Builder{}
-		options := strings.Split(line, " ")[3]
+		quoted := false
+		for _, r := range line {
+			if r == '"' {
+				quoted = !quoted
+			} else if !quoted && r == ' ' {
+				str := sb.String()
+				if len(strings.TrimSpace(str)) > 0 {
+					fields = append(fields, sb.String())
+				}
+				sb.Reset()
+			} else {
+				sb.WriteRune(r)
+			}
+		}
+		if sb.Len() > 0 {
+			fields = append(fields, sb.String())
+		}
+		if len(fields) < 4 {
+			return fmt.Errorf("Not enough fields"), i + 1
+		}
+		source := fields[0]
+		target := fields[1]
+		fstype := fields[2]
+		options := fields[3]
 
-		flags, data := convertMountOptions(options)
+		// Replace device prefixes
+		if cutSource, ok := strings.CutPrefix(source, "LABEL="); ok {
+			source = "/dev/disk/by-label/" + strings.ReplaceAll(cutSource, " ", "\\x20")
+		} else if cutSource, ok := strings.CutPrefix(source, "UUID="); ok {
+			source = "/dev/disk/by-uuid/" + cutSource
+		} else if cutSource, ok := strings.CutPrefix(source, "PARTLABEL="); ok {
+			source = "/dev/disk/by-partlabel/" + cutSource
+		} else if cutSource, ok := strings.CutPrefix(source, "PARTUUID="); ok {
+			source = "/dev/disk/by-partuuid/" + cutSource
+		}
 
-		if slices.Contains(strings.Split(data, ","), "noauto") {
+		flags, data, extra := convertMountOptions(options)
+
+		if slices.Contains(extra, "noauto") {
 			continue
 		}
 
@@ -142,7 +182,11 @@ func mountFstabEntries() error {
 			_, _, err := unix.Syscall(unix.SYS_SWAPON, uintptr(unsafe.Pointer(&b[0])), uintptr((swapPriority<<SwapFlagPrioShift)&SwapFlagPrioMask), 0)
 			swapPriority--
 			if err != 0 {
-				return fmt.Errorf("swapon syscall returned none-zero error code: %d", err)
+				if slices.Contains(extra, "nofail") {
+					fmt.Printf("Warning: could not mount fstab entry on line %d: swapon syscall returned non-zero exit code: %d\n", i+1, err)
+				} else {
+					return fmt.Errorf("swapon syscall returned non-zero exit code: %d", err), i + 1
+				}
 			}
 			continue
 		}
@@ -152,9 +196,146 @@ func mountFstabEntries() error {
 		}
 
 		if err := unix.Mount(source, target, fstype, combineUnixFlags(flags), data); err != nil {
-			return err
+			if slices.Contains(extra, "nofail") {
+				log.Printf("Warning: could not mount fstab entry on line %d: %s\n", i+1, err)
+			} else {
+				return err, i + 1
+			}
 		}
 	}
 
-	return nil
+	return nil, 0
+}
+
+func unmountFilesystems() {
+	// Disable all swap memory
+	data, err := os.ReadFile("/proc/swaps")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	for i, entry := range strings.Split(string(data), "\n") {
+		if i == 0 {
+			continue
+		}
+		entry = strings.TrimSpace(entry)
+		if len(entry) == 0 {
+			continue
+		}
+
+		mountpoint := strings.Fields(entry)[0]
+
+		// Unmount swap at mountpoint
+		fmt.Printf("Disabling swap at %s... ", mountpoint)
+		b := append([]byte(mountpoint), 0)
+		_, _, err := unix.Syscall(unix.SYS_SWAPOFF, uintptr(unsafe.Pointer(&b[0])), 0, 0)
+		if err == 0 {
+			fmt.Println("Done.")
+		} else {
+			fmt.Printf("Error: %s\n", err.Error())
+		}
+	}
+
+	data, err = os.ReadFile("/proc/self/mountinfo")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// Unmount filesystems
+	entries := strings.Split(string(data), "\n")
+	slices.Reverse(entries)
+	for _, entry := range entries {
+		entry = strings.TrimSpace(entry)
+		if len(entry) == 0 {
+			continue
+		}
+
+		// Get entry fields
+		fields := strings.Fields(entry)
+		mountpoint := fields[4]
+		filesystem := ""
+		for i := 6; i < len(fields); i++ {
+			if fields[i] == "-" {
+				filesystem = fields[i+1]
+				break
+			}
+		}
+
+		// Skip root filesystem
+		if mountpoint == "/" {
+			continue
+		}
+
+		// Skip root and ignored filesystems
+		ignoredFilesystems := []string{
+			"devtmpfs",
+			"proc",
+			"sysfs",
+			"tmpfs",
+		}
+
+		if slices.Contains(ignoredFilesystems, filesystem) {
+			continue
+		}
+
+		// Unmount filesystem at mountpoint
+		fmt.Printf("Unmounting %s...", mountpoint)
+		err := unix.Unmount(mountpoint, 0)
+		if errors.Is(err, syscall.EBUSY) {
+			fmt.Println(" Busy.")
+			time.Sleep(1 * time.Second)
+		} else if err != nil {
+			fmt.Printf(" Error: %s\n", err.Error())
+		} else {
+			fmt.Println(" Done.")
+		}
+	}
+}
+
+func remountRootReadonly() {
+	fmt.Print("Remounting root as read-only...")
+
+	data, err := os.ReadFile("/proc/self/mountinfo")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	filesystem := ""
+	source := ""
+	fsData := ""
+
+	// Get root filesystems
+	entries := strings.Split(string(data), "\n")
+	slices.Reverse(entries)
+	for _, entry := range entries {
+		entry = strings.TrimSpace(entry)
+		if len(entry) == 0 {
+			continue
+		}
+
+		// Get entry fields
+		fields := strings.Fields(entry)
+		mountpoint := fields[4]
+		for i := 6; i < len(fields); i++ {
+			if fields[i] == "-" {
+				filesystem = fields[i+1]
+				source = fields[i+2]
+				fsData = fields[i+3]
+				break
+			}
+		}
+
+		if mountpoint == "/" {
+			break
+		}
+	}
+
+	err = unix.Mount(source, "/", filesystem, syscall.MS_RDONLY|syscall.MS_REMOUNT, fsData)
+	if errors.Is(err, syscall.EBUSY) {
+		fmt.Println(" Busy.")
+	} else if err != nil {
+		fmt.Printf(" Error: %s\n", err.Error())
+	} else {
+		fmt.Println(" Done.")
+	}
 }

src/esvm/main.go

@@ -1,7 +1,6 @@
 package main
 
 import (
-	"crypto/sha256"
 	"flag"
 	"fmt"
 	"io"
@@ -15,8 +14,6 @@ import (
 	"strings"
 	"syscall"
 	"time"
-
-	"gopkg.in/yaml.v3"
 )
 
 // Build-time variables
@@ -136,64 +133,8 @@ func Init() {
 	// Read and initialize service files
 	for _, entry := range dirEntries {
 		if !entry.IsDir() && strings.HasSuffix(entry.Name(), ".esv") {
-			logger.Printf("Initializing service (%s)...\n", entry.Name())
+			filepath := path.Join(serviceConfigDir, "services", entry.Name())
-			bytes, err := os.ReadFile(path.Join(serviceConfigDir, "services", entry.Name()))
+			LoadService(filepath)
-			if err != nil {
-				logger.Printf("Error: Could not read service file (%s)", path.Join(serviceConfigDir, "services", entry.Name()))
-				continue
-			}
-
-			service := EnitService{
-				Name:             "",
-				Description:      "",
-				Type:             "",
-				StartCmd:         "",
-				ExitMethod:       "",
-				StopCmd:          "",
-				Restart:          "",
-				Setpgid:          true,
-				CrashOnSafeExit:  true,
-				LogOutput:        true,
-				Filepath:         path.Join(serviceConfigDir, "services", entry.Name()),
-				filepathChecksum: sha256.Sum256(bytes),
-				restartCount:     0,
-				stopChannel:      make(chan bool),
-				state:            EnitServiceUnloaded,
-			}
-			if err := yaml.Unmarshal(bytes, &service); err != nil {
-				logger.Printf("Error: could not read service file %s", path.Join(serviceConfigDir, "services", entry.Name()))
-				continue
-			}
-
-			for _, sv := range Services {
-				if sv.Name == service.Name {
-					logger.Printf("Error: service with name (%s) has already been initialized", service.Name)
-				}
-			}
-
-			switch service.Type {
-			case "simple", "background":
-			default:
-				logger.Printf("Error: unknown service type (%s)", service.Type)
-				continue
-			}
-
-			switch service.ExitMethod {
-			case "stop_command", "kill":
-			default:
-				logger.Printf("Error: unknown exit method (%s)\n", service.ExitMethod)
-				continue
-			}
-
-			switch service.Restart {
-			case "true", "always":
-			default:
-				service.Restart = "false"
-			}
-
-			Services = append(Services, &service)
-
-			logger.Printf("Service (%s) has been initialized!\n", service.Name)
 		}
 	}
 
@@ -231,8 +172,26 @@ func Init() {
 func Reload() {
 	logger.Println("Reloading all ESVM services...")
 
-	for _, service := range Services {
+	dirEntries, err := os.ReadDir(path.Join(serviceConfigDir, "services"))
-		service.ReloadService()
+	if err != nil {
+		logger.Fatalf("Error: Could not initialize ESVM: %s", err)
+	}
+
+	// Read and load service files
+	servicesToRemove := slices.Clone(Services)
+	for _, entry := range dirEntries {
+		if !entry.IsDir() && strings.HasSuffix(entry.Name(), ".esv") {
+			filepath := path.Join(serviceConfigDir, "services", entry.Name())
+			LoadService(filepath)
+			servicesToRemove = slices.DeleteFunc(servicesToRemove, func(sv *EnitService) bool {
+				return sv.Filepath == filepath
+			})
+		}
+	}
+
+	// Reload services that had their esv file removed
+	for _, service := range servicesToRemove {
+		LoadService(service.Filepath)
 	}
 
 	logger.Println("All ESVM services have been reloaded!")

src/esvm/service.go

@@ -6,8 +6,10 @@ import (
 	"io"
 	"os"
 	"os/exec"
+	"os/user"
 	"path"
 	"slices"
+	"strconv"
 	"strings"
 	"syscall"
 	"time"
@@ -42,9 +44,9 @@ type EnitService struct {
 	Description      string `yaml:"description,omitempty"`
 	Type             string `yaml:"type"`
 	StartCmd         string `yaml:"start_cmd"`
-	ExitMethod       string `yaml:"exit_method"`
 	CrashOnSafeExit  bool   `yaml:"crash_on_safe_exit"`
 	StopCmd          string `yaml:"stop_cmd,omitempty"`
+	User             string `yaml:"user,omitempty"`
 	Restart          string `yaml:"restart,omitempty"`
 	ReadyFd          int    `yaml:"ready_fd"`
 	Setpgid          bool   `yaml:"setpgid"`
@@ -101,9 +103,18 @@ func (service *EnitService) GetLogFile() (file *os.File, err error) {
 	return file, nil
 }
 
-func (service *EnitService) ReloadService() {
+func LoadService(filepath string) {
-	bytes, err := os.ReadFile(service.Filepath)
+	bytes, err := os.ReadFile(filepath)
 	checksum := sha256.Sum256(bytes)
+
+	var serviceToReload *EnitService
+
+	// Check if service is already loaded
+	for _, service := range Services {
+		if service.Filepath != filepath {
+			continue
+		}
+
 		if slices.Equal(checksum[:], service.filepathChecksum[:]) {
 			return
 		}
@@ -114,17 +125,29 @@ func (service *EnitService) ReloadService() {
 			return
 		}
 		service.shouldReload = false
+		serviceToReload = service
 
-	logger.Printf("Reloading service (%s)...\n", service.Filepath)
+		break
+	}
+
+	if serviceToReload == nil {
+		logger.Printf("Loading service (%s)...\n", filepath)
+	} else {
+		logger.Printf("Reloading service (%s)...\n", filepath)
+	}
 
 	if os.IsNotExist(err) {
 		Services = slices.DeleteFunc(Services, func(sv *EnitService) bool {
-			return sv == service
+			if sv.Filepath == filepath {
+				logger.Printf("Service (%s) has been removed\n", sv.Name)
+				return true
+			}
+			return false
 		})
-		logger.Printf("Service (%s) has been removed\n", service.Name)
+
 		return
 	} else if err != nil {
-		logger.Printf("Error: Could not read service file (%s)", service.Filepath)
+		logger.Printf("Error: Could not read service file (%s)", filepath)
 		return
 	}
 
@@ -133,26 +156,32 @@ func (service *EnitService) ReloadService() {
 		Description:      "",
 		Type:             "",
 		StartCmd:         "",
-		ExitMethod:       "",
 		StopCmd:          "",
+		User:             "",
 		Restart:          "",
 		Setpgid:          true,
 		CrashOnSafeExit:  true,
 		LogOutput:        true,
-		Filepath:         service.Filepath,
+		Filepath:         filepath,
-		filepathChecksum: checksum,
+		filepathChecksum: sha256.Sum256(bytes),
-		restartCount:     service.restartCount,
+		restartCount:     0,
-		stopChannel:      service.stopChannel,
+		stopChannel:      make(chan bool),
-		state:            service.state,
+		state:            EnitServiceUnloaded,
+	}
+	if serviceToReload != nil {
+		newService.restartCount = serviceToReload.restartCount
+		newService.stopChannel = serviceToReload.stopChannel
+		newService.state = serviceToReload.state
 	}
 	if err := yaml.Unmarshal(bytes, &newService); err != nil {
-		logger.Printf("Error: could not read service file %s", service.Filepath)
+		logger.Printf("Error: could not read service file %s", filepath)
 		return
 	}
 
 	for _, sv := range Services {
-		if sv.Name == newService.Name && sv != service {
+		if sv.Name == newService.Name && sv != serviceToReload {
-			logger.Printf("Error: service with name (%s) has already been initialized", service.Name)
+			logger.Printf("Error: service with name (%s) has already been loaded", newService.Name)
+			return
 		}
 	}
 
@@ -163,13 +192,6 @@ func (service *EnitService) ReloadService() {
 		return
 	}
 
-	switch newService.ExitMethod {
-	case "stop_command", "kill":
-	default:
-		logger.Printf("Error: unknown exit method (%s)\n", newService.ExitMethod)
-		return
-	}
-
 	switch newService.Restart {
 	case "true", "always":
 	default:
@@ -177,12 +199,15 @@ func (service *EnitService) ReloadService() {
 	}
 
 	for i, sv := range Services {
-		if sv == service {
+		if sv == serviceToReload {
 			Services[i] = &newService
+			logger.Printf("Service (%s) has been reloaded!\n", newService.Name)
+			return
 		}
 	}
 
-	logger.Printf("Service (%s) has been reloaded!\n", newService.Name)
+	Services = append(Services, &newService)
+	logger.Printf("Service (%s) has been loaded!\n", newService.Name)
 }
 
 func (service *EnitService) StartService() (err error) {
@@ -206,10 +231,38 @@ func (service *EnitService) StartService() (err error) {
 
 	cmd := exec.Command("/bin/sh", "-c", "exec "+service.StartCmd)
 	cmd.SysProcAttr = &syscall.SysProcAttr{Setpgid: service.Setpgid, Pgid: 0}
+
+	// Setup service log file
 	if logFile != nil {
 		cmd.Stdout = logFile
 		cmd.Stderr = logFile
 	}
+
+	// Setup command credentials
+	if service.User != "" && service.User != "root" {
+		// Lookup user in /etc/passwd
+		u, err := user.Lookup(service.User)
+		if err != nil {
+			return err
+		}
+
+		// Get user id and group id
+		uid, err := strconv.Atoi(u.Uid)
+		if err != nil {
+			return err
+		}
+		gid, err := strconv.Atoi(u.Gid)
+		if err != nil {
+			return err
+		}
+
+		cmd.SysProcAttr.Credential = &syscall.Credential{
+			Uid: uint32(uid),
+			Gid: uint32(gid),
+		}
+	}
+
+	// Setup command pipes
 	var pipeReader, pipeWriter *os.File
 	if service.ReadyFd > 2 {
 		pipeReader, pipeWriter, err = os.Pipe()
@@ -237,6 +290,7 @@ func (service *EnitService) StartService() (err error) {
 		}
 		cmd.ExtraFiles = append(cmd.ExtraFiles, pipeWriter)
 	}
+
 	if err := cmd.Start(); err != nil {
 		// Close log file if not nil
 		if logFile != nil {
@@ -246,6 +300,7 @@ func (service *EnitService) StartService() (err error) {
 		return err
 	}
 
+	pid := cmd.Process.Pid
 	service.processID = cmd.Process.Pid
 	service.state = EnitServiceStarting
 
@@ -260,7 +315,7 @@ func (service *EnitService) StartService() (err error) {
 			}
 
 			// Kill process and children
-			syscall.Kill(-service.processID, syscall.SIGKILL)
+			syscall.Kill(-pid, syscall.SIGKILL)
 
 			service.processID = 0
 			service.state = EnitServiceCrashed
@@ -284,23 +339,18 @@ func (service *EnitService) StartService() (err error) {
 			service.restartCount = 0
 		default:
 			// Kill remaining child processes
-			syscall.Kill(-service.processID, syscall.SIGKILL)
+			syscall.Kill(-pid, syscall.SIGKILL)
 
 			if service.Type == "simple" && err == nil {
 				service.restartCount = 0
-				if service.ExitMethod != "stop_command" {
+				if strings.TrimSpace(service.StopCmd) == "" {
 					service.state = EnitServiceCompleted
 
 					// Reload service if needed
 					if service.shouldReload {
-						service.ReloadService()
+						LoadService(service.Filepath)
-						if GetServiceByName(service.Name) == nil {
-							return
 					}
 				}
-				} else {
-					service.state = EnitServiceRunning
-				}
 				return
 			}
 			if !service.CrashOnSafeExit {
@@ -313,7 +363,7 @@ func (service *EnitService) StartService() (err error) {
 
 			// Reload service if needed
 			if service.shouldReload {
-				service.ReloadService()
+				LoadService(service.Filepath)
 				if GetServiceByName(service.Name) == nil {
 					return
 				}
@@ -352,14 +402,16 @@ func (service *EnitService) StopService() error {
 	newServiceStatus := EnitServiceCrashed
 	defer func() {
 		// Kill remaining child processes
+		if pid != 0 {
 			syscall.Kill(-pid, syscall.SIGKILL)
+		}
 
 		service.state = newServiceStatus
 		service.processID = 0
 
 		// Reload service if needed
 		if service.shouldReload {
-			service.ReloadService()
+			LoadService(service.Filepath)
 			if GetServiceByName(service.Name) == nil {
 				return
 			}
@@ -367,7 +419,7 @@ func (service *EnitService) StopService() error {
 		}
 	}()
 
-	if service.ExitMethod == "kill" {
+	if strings.TrimSpace(service.StopCmd) == "" {
 		if err := service.GetProcess().Signal(syscall.Signal(0)); err != nil {
 			newServiceStatus = EnitServiceStopped
 			logger.Printf("Service (%s) has stopped (Process already dead)", service.Name)
@@ -381,12 +433,46 @@ func (service *EnitService) StopService() error {
 			service.GetProcess().Signal(syscall.SIGKILL)
 			return fmt.Errorf("could not stop process gracefully")
 		}
+	} else {
+		go func() { service.stopChannel <- true }()
 
+		cmd := exec.Command("/bin/sh", "-c", service.StopCmd)
+
+		// Setup command credentials
+		if service.User != "" && service.User != "root" {
+			// Lookup user in /etc/passwd
+			u, err := user.Lookup(service.User)
+			if err != nil {
+				return err
+			}
+
+			// Get user id and group id
+			uid, err := strconv.Atoi(u.Uid)
+			if err != nil {
+				return err
+			}
+			gid, err := strconv.Atoi(u.Gid)
+			if err != nil {
+				return err
+			}
+
+			cmd.SysProcAttr.Credential = &syscall.Credential{
+				Uid: uint32(uid),
+				Gid: uint32(gid),
+			}
+		}
+
+		if err := cmd.Run(); err != nil {
+			return err
+		}
+	}
+
+	if service.Type == "background" {
 		// Check if the process has stopped gracefully, otherwise send sigkill on timeout
 		exited := make(chan bool)
 		go func() {
 			for {
-				if err := service.GetProcess().Signal(syscall.Signal(0)); err != nil {
+				if err := syscall.Kill(pid, syscall.Signal(0)); err != nil {
 					break
 				}
 			}
@@ -395,15 +481,10 @@ func (service *EnitService) StopService() error {
 
 		select {
 		case <-exited:
-		case <-time.After(5 * time.Second):
+		case <-time.After(15 * time.Second):
 			service.GetProcess().Signal(syscall.SIGKILL)
 			return fmt.Errorf("could not stop process gracefully")
 		}
-	} else {
-		cmd := exec.Command("/bin/sh", "-c", service.StopCmd)
-		if err := cmd.Run(); err != nil {
-			return err
-		}
 	}
 
 	newServiceStatus = EnitServiceStopped
@@ -417,6 +498,12 @@ func (service *EnitService) RestartService() error {
 		return err
 	}
 
+	// Get service from list in case of a reload
+	if GetServiceByName(service.Name) == nil {
+		return fmt.Errorf("service was removed")
+	}
+	service = GetServiceByName(service.Name)
+
 	if err := service.StartService(); err != nil {
 		return err
 	}
@@ -424,78 +511,16 @@ func (service *EnitService) RestartService() error {
 	return nil
 }
 
-func (service *EnitService) isEnabled() (bool, int) {
-	for stage, services := range ReadEnabledServices() {
-		if slices.Contains(services, service.Name) {
-			return true, stage
-		}
-	}
-
-	return false, 0
-}
-
-func (service *EnitService) SetEnabled(stage int) error {
-	// Get current service enabled status
-	_, s := service.isEnabled()
-
-	// Return if service is already in correct state
-	if s == stage {
-		return nil
-	}
-
-	EnabledServices := ReadEnabledServices()
-
-	// Remove service from current stage
-	EnabledServices[s] = slices.DeleteFunc(EnabledServices[s], func(name string) bool {
-		return name == service.Name
-	})
-	if len(EnabledServices[s]) == 0 {
-		delete(EnabledServices, s)
-	}
-
-	// Add service to stage
-	if stage != 0 {
-		EnabledServices[stage] = append(EnabledServices[stage], service.Name)
-	}
-
-	// Save enabled services to file
-	data, err := yaml.Marshal(EnabledServices)
-	if err != nil {
-		return err
-	}
-	err = os.WriteFile(path.Join(serviceConfigDir, "enabled_services"), data, 0644)
-	if err != nil {
-		return err
-	}
-
-	return nil
-}
-
 func ReadEnabledServices() (EnabledServices map[int][]string) {
 	EnabledServices = make(map[int][]string)
 
-	data, err := os.ReadFile(path.Join(serviceConfigDir, "enabled_services"))
+	data, err := os.ReadFile(path.Join(serviceConfigDir, "enabled-services.yml"))
 	if err != nil {
 		return EnabledServices
 	}
 
 	err = yaml.Unmarshal(data, &EnabledServices)
 	if err != nil {
-		// Assume old plain text format
-		for _, service := range strings.Split(strings.TrimSpace(string(data)), "\n") {
-			EnabledServices[3] = append(EnabledServices[3], service)
-		}
-
-		// Update enabled_services file
-		data, err := yaml.Marshal(EnabledServices)
-		if err != nil {
-			return EnabledServices
-		}
-		err = os.WriteFile(path.Join(serviceConfigDir, "enabled_services"), data, 0644)
-		if err != nil {
-			return EnabledServices
-		}
-
 		return EnabledServices
 	}
 

src/esvm/socket.go

@@ -22,7 +22,6 @@ func initSocket() (socket net.Listener, err error) {
 	commandHandlers["start"] = handleStartServiceCommand
 	commandHandlers["stop"] = handleStopServiceCommand
 	commandHandlers["restart"] = handleRestartServiceCommand
-	commandHandlers["set_enabled"] = handleSetEnabledServiceCommand
 	commandHandlers["status"] = handleStatusServiceCommand
 	commandHandlers["list"] = handleListServicesCommand
 
@@ -151,65 +150,6 @@ func handleRestartServiceCommand(conn net.Conn, jsonData map[string]any) {
 	conn.Write(wrapSuccessMsgInJson(fmt.Sprintf("Service (%s) has restarted sucessfully", serviceName.(string))))
 }
 
-func handleSetEnabledServiceCommand(conn net.Conn, jsonData map[string]any) {
-	// Get service name from json data
-	serviceName, ok := jsonData["service"]
-	if !ok {
-		conn.Write(wrapErrorInJson(fmt.Errorf("'service' field missing")))
-		return
-	}
-
-	// Get service stage from json json data
-	_serviceStage, ok := jsonData["stage"]
-	if !ok {
-		conn.Write(wrapErrorInJson(fmt.Errorf("'stage' field missing")))
-		return
-	}
-	serviceStage, ok := _serviceStage.(float64)
-	if !ok {
-		conn.Write(wrapErrorInJson(fmt.Errorf("'stage' field is not a number")))
-		return
-	}
-
-	// Ensure service exists
-	service := GetServiceByName(serviceName.(string))
-	if service == nil {
-		conn.Write(wrapErrorInJson(fmt.Errorf("Service (%s) not found", serviceName.(string))))
-		return
-	}
-
-	// Get current service enabled status
-	_, s := service.isEnabled()
-
-	// Return if service is already in correct state
-	if s == int(serviceStage) {
-		if serviceStage == 0 {
-			conn.Write(wrapSuccessMsgInJson(fmt.Sprintf("Service (%s) is already disabled", serviceName.(string))))
-		} else {
-			conn.Write(wrapSuccessMsgInJson(fmt.Sprintf("Service (%s) is already enabled", serviceName.(string))))
-		}
-		return
-	}
-
-	// Enable service
-	err := service.SetEnabled(int(serviceStage))
-	if err != nil {
-		if serviceStage == 0 {
-			conn.Write(wrapErrorInJson(fmt.Errorf("Could not disable service! Error: %s", err)))
-		} else {
-			conn.Write(wrapErrorInJson(fmt.Errorf("Could not enable service! Error: %s", err)))
-		}
-		return
-	}
-
-	if serviceStage == 0 {
-		conn.Write(wrapSuccessMsgInJson(fmt.Sprintf("Service (%s) was disabled sucessfully", serviceName.(string))))
-	} else {
-		conn.Write(wrapSuccessMsgInJson(fmt.Sprintf("Service (%s) was enabled sucessfully", serviceName.(string))))
-	}
-
-}
-
 func handleStatusServiceCommand(conn net.Conn, jsonData map[string]any) {
 	// Get service name from json data
 	serviceName, ok := jsonData["service"]
@@ -230,7 +170,6 @@ func handleStatusServiceCommand(conn net.Conn, jsonData map[string]any) {
 	statusMap["description"] = service.Description
 	statusMap["state"] = EnitServiceStateNames[service.state]
 	statusMap["process_id"] = service.processID
-	statusMap["is_enabled"], statusMap["stage"] = service.isEnabled()
 
 	// Encode map to json string
 	newJsonData, err := json.Marshal(statusMap)
@@ -253,7 +192,6 @@ func handleListServicesCommand(conn net.Conn, _ map[string]any) {
 		statusMap["description"] = service.Description
 		statusMap["state"] = EnitServiceStateNames[service.state]
 		statusMap["process_id"] = service.processID
-		statusMap["is_enabled"], statusMap["stage"] = service.isEnabled()
 		servicesMap["services"] = append(servicesMap["services"].([]map[string]any), statusMap)
 	}