exitcodes: specific codes for failure to read or write gocryptfs.conf

New codes:
* OpenConf = 23
* WriteConf = 24

init_dir.go

@@ -42,7 +42,7 @@ func initDir(args *argContainer) {
 	err = configfile.CreateConfFile(args.config, password, args.plaintextnames, args.scryptn, creator, args.aessiv)
 	if err != nil {
 		tlog.Fatal.Println(err)
-		os.Exit(exitcodes.Init)
+		os.Exit(exitcodes.WriteConf)
 	}
 	// Forward mode with filename encryption enabled needs a gocryptfs.diriv
 	// in the root dir

internal/configfile/config_file.go

@@ -96,6 +96,7 @@ func LoadConfFile(filename string, password string) ([]byte, *ConfFile, error) {
 	// Read from disk
 	js, err := ioutil.ReadFile(filename)
 	if err != nil {
+		fmt.Printf("LoadConfFile: ReadFile: %#v\n", err)
 		return nil, nil, err
 	}
 

internal/exitcodes/exitcodes.go

@@ -53,6 +53,10 @@ const (
 	PanicLogCreate = 21
 	// PasswordEmpty - we received an empty password
 	PasswordEmpty = 22
+	// OpenConf - the was an error opening the gocryptfs.conf file for reading
+	OpenConf = 23
+	// WriteConf - could not write the gocryptfs.conf
+	WriteConf = 24
 )
 
 // Err wraps an error with an associated numeric exit code

main.go

@@ -52,7 +52,7 @@ func loadConfig(args *argContainer) (masterkey []byte, confFile *configfile.Conf
 	fd, err := os.Open(args.config)
 	if err != nil {
 		tlog.Fatal.Printf("Cannot open config file: %v", err)
-		return nil, nil, err
+		return nil, nil, exitcodes.NewErr(err.Error(), exitcodes.OpenConf)
 	}
 	fd.Close()
 	// The user has passed the master key (probably because he forgot the
@@ -97,7 +97,7 @@ func changePassword(args *argContainer) {
 	err = confFile.WriteFile()
 	if err != nil {
 		tlog.Fatal.Println(err)
-		os.Exit(exitcodes.Init)
+		os.Exit(exitcodes.WriteConf)
 	}
 	tlog.Info.Printf(tlog.ColorGreen + "Password changed." + tlog.ColorReset)
 	os.Exit(0)