v0.36c: Moved and renamed writeConfigToDisk into utils.go

cmd/utils.go

@@ -13,6 +13,7 @@ import (
 	"strconv"
 	"strings"
 	"io/ioutil"
+	"encoding/json"
 	"github.com/google/shlex"
 	"github.com/c2h5oh/datasize"
 	log "github.com/sirupsen/logrus"
@@ -921,6 +922,71 @@ func setJailConfigUpdated(jail *Jail) error {
 	return nil
 }
 
+func updateVersion(jail *Jail) error {
+	cvers, err := executeCommandInJail(jail, "/bin/freebsd-version")
+	if err != nil {
+		fmt.Printf("ERROR: %s\n", err.Error())
+		return err
+	}
+	cvers = strings.TrimRight(cvers, "\n")
+	jail.Config.Release = cvers
+	writeConfigToDisk(jail, false)
+	
+	return nil
+}
+
+/********************************************************************************
+ * Write jail(s) config which been updated to disk.
+ * If name is specified, work on the jail. If name is empty string, work on all.
+ * If changeauto not set, values which are in "auto" mode on disk
+ *  won't be overwritten (p.ex defaultrouter wont be overwritten with current
+ *  default route, so if route change on jailhost this will reflect on jail next
+ *  start)
+ *******************************************************************************/
+func writeConfigToDisk(j *Jail, changeauto bool) {
+	// we will manipulate properties so get a copy
+	jc := j.Config
+	
+	if changeauto == false {
+		// Overwrite "auto" properties
+		ondiskjc, err := getJailConfig(j.ConfigPath)
+		if err != nil {
+			panic(err)
+		}
+		// TODO : List all fields, then call getStructFieldValue to compare value with "auto"
+		// If "auto" then keep it that way before writing ondiskjc to disk
+		var properties []string
+		properties = getStructFieldNames(ondiskjc, properties, "")
+		
+		for _, p := range properties {
+			v, _, err := getStructFieldValue(ondiskjc, p)
+			if err != nil {
+				panic(err)
+			}
+			if v.String() == "auto" {
+				err = setStructFieldValue(&jc, p, "auto")
+				if err != nil {
+					fmt.Printf("ERROR sanitizing config: %s\n", err.Error())
+					os.Exit(1)
+				}
+			}
+		}
+	}
+	
+	marshaled, err := json.MarshalIndent(jc, "", "    ")
+	if err != nil {
+		fmt.Printf("ERROR marshaling config: %s\n", err.Error())
+	}
+	
+	//fmt.Printf("DEBUG: Will write config to disk, with content:\n")
+	//fmt.Printf(string(marshaled))
+	
+	if os.WriteFile(j.ConfigPath, []byte(marshaled), 0644); err != nil {
+		fmt.Printf("Error writing config file %s: %v\n", j.ConfigPath, err)
+		os.Exit(1)
+	}
+}
+
 /******************************************************************************
  * Return the quantity of jails with the name passed as parameter
  *****************************************************************************/