pass defaults for shared_net_mask/address if error occurs, closes #209

Author: nlf

cmd_init.go

@@ -50,11 +50,7 @@ var initCommand = cli.Command{
 		cfg.Cpu = askInt("CPU cores to allocate to VM", 2)
 		cfg.Memory = askInt("Memory to allocate to VM (in gigabytes)", 2)
 
-		host, err := getHostAddress()
-		if err != nil {
-			return cli.NewExitError(err.Error(), 1)
-		}
-
+		host, _ := getHostAddress()
 		cfg.DNS = askString("DNS server", host)
 		cfg.Docker = askString("Docker version", "latest")
 		cfg.Extra = ask("Extra flags to pass to the docker daemon")

net.go

@@ -7,16 +7,10 @@ import (
 )
 
 func getNetAddress() (string, error) {
-	rawAddr, err := getHostAddress()
-	if err != nil {
-		return "", err
-	}
+	rawAddr, _ := getHostAddress()
 	addr := net.ParseIP(rawAddr)
 
-	rawMask, err := getNetMask()
-	if err != nil {
-		return "", err
-	}
+	rawMask, _ := getNetMask()
 	mask := net.IPMask(net.ParseIP(rawMask).To4())
 
 	return addr.Mask(mask).String(), nil
@@ -25,7 +19,7 @@ func getNetAddress() (string, error) {
 func getHostAddress() (string, error) {
 	addr, err := exec.Command("defaults", "read", "/Library/Preferences/SystemConfiguration/com.apple.vmnet.plist", "Shared_Net_Address").Output()
 	if err != nil {
-		return "", err
+		return "192.168.64.1", err
 	}
 
 	return strings.TrimSpace(string(addr)), nil
@@ -34,7 +28,7 @@ func getHostAddress() (string, error) {
 func getNetMask() (string, error) {
 	mask, err := exec.Command("defaults", "read", "/Library/Preferences/SystemConfiguration/com.apple.vmnet.plist", "Shared_Net_Mask").Output()
 	if err != nil {
-		return "", err
+		return "255.255.255.0", err
 	}
 
 	return strings.TrimSpace(string(mask)), nil

nfs.go

@@ -15,11 +15,7 @@ func ensureNFS(home string) error {
 		return err
 	}
 
-	mask, err := getNetMask()
-	if err != nil {
-		return err
-	}
-
+	mask, _ := getNetMask()
 	export := fmt.Sprintf("%s -network %s -mask %s -alldirs -maproot=root:wheel", home, addr, mask)
 
 	if _, err = os.Stat("/etc/exports"); os.IsNotExist(err) {
@@ -92,11 +88,7 @@ func removeNFS(home string) error {
 		return err
 	}
 
-	mask, err := getNetMask()
-	if err != nil {
-		return err
-	}
-
+	mask, _ := getNetMask()
 	export := fmt.Sprintf("%s -network %s -mask %s -alldirs -maproot=root:wheel", home, addr, mask)
 
 	rawExports, err := ioutil.ReadFile("/etc/exports")

tar.go

@@ -98,11 +98,7 @@ func generateTarball(user User) ([]byte, error) {
 		return nil, err
 	}
 
-	hostIp, err := getHostAddress()
-	if err != nil {
-		return nil, err
-	}
-
+	hostIp, _ := getHostAddress()
 	hostIpBytes := []byte(hostIp)
 	hostIpHeader := &tar.Header{
 		Name: "/etc/dlite/host_ip",