main: move initDir into its own file

cli_args.go

@@ -10,20 +10,22 @@ import (
 	"github.com/rfjakob/gocryptfs/internal/tlog"
 )
 
-// argContainer stores the parsed CLI arguments
+// argContainer stores the parsed CLI options and arguments
 type argContainer struct {
 	debug, init, zerokey, fusedebug, openssl, passwd, foreground, version,
 	plaintextnames, quiet, nosyslog, wpanic,
 	longnames, allow_other, ro, reverse bool
-	masterkey, mountpoint, cipherdir, cpuprofile, config, extpass,
+	masterkey, mountpoint, cipherdir, cpuprofile, extpass,
 	memprofile, o string
+	// Configuration file name override
+	config             string
 	notifypid, scryptn int
 }
 
 var flagSet *flag.FlagSet
 
-// parseCliArgs - parse command line arguments
-func parseCliArgs() (args argContainer) {
+// parseCliOpts - parse command line options (i.e. arguments that start with "-")
+func parseCliOpts() (args argContainer) {
 	var err error
 	var opensslAuto string
 

init_dir.go

@@ -0,0 +1,56 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/rfjakob/gocryptfs/internal/configfile"
+	"github.com/rfjakob/gocryptfs/internal/nametransform"
+	"github.com/rfjakob/gocryptfs/internal/readpassword"
+	"github.com/rfjakob/gocryptfs/internal/tlog"
+)
+
+// initDir initializes an empty directory for use as a gocryptfs cipherdir.
+func initDir(args *argContainer) {
+	err := checkDirEmpty(args.cipherdir)
+	if err != nil {
+		tlog.Fatal.Printf("Invalid cipherdir: %v", err)
+		os.Exit(ERREXIT_INIT)
+	}
+
+	// Create gocryptfs.conf
+	if args.extpass == "" {
+		tlog.Info.Printf("Choose a password for protecting your files.")
+	} else {
+		tlog.Info.Printf("Using password provided via -extpass.")
+	}
+	password := readpassword.Twice(args.extpass)
+	creator := tlog.ProgramName + " " + GitVersion
+	err = configfile.CreateConfFile(args.config, password, args.plaintextnames, args.scryptn, creator)
+	if err != nil {
+		tlog.Fatal.Println(err)
+		os.Exit(ERREXIT_INIT)
+	}
+
+	if !args.plaintextnames {
+		// Create gocryptfs.diriv in the root dir
+		err = nametransform.WriteDirIV(args.cipherdir)
+		if err != nil {
+			tlog.Fatal.Println(err)
+			os.Exit(ERREXIT_INIT)
+		}
+	}
+
+	tlog.Info.Printf(tlog.ColorGreen + "The filesystem has been created successfully." + tlog.ColorReset)
+	wd, _ := os.Getwd()
+	friendlyPath, _ := filepath.Rel(wd, args.cipherdir)
+	if strings.HasPrefix(friendlyPath, "../") {
+		// A relative path that starts with "../" is pretty unfriendly, just
+		// keep the absolute path.
+		friendlyPath = args.cipherdir
+	}
+	tlog.Info.Printf(tlog.ColorGrey+"You can now mount it using: %s %s MOUNTPOINT"+tlog.ColorReset,
+		tlog.ProgramName, friendlyPath)
+	os.Exit(0)
+}

main.go

@@ -24,7 +24,6 @@ import (
 	"github.com/rfjakob/gocryptfs/internal/cryptocore"
 	"github.com/rfjakob/gocryptfs/internal/fusefrontend"
 	"github.com/rfjakob/gocryptfs/internal/fusefrontend_reverse"
-	"github.com/rfjakob/gocryptfs/internal/nametransform"
 	"github.com/rfjakob/gocryptfs/internal/readpassword"
 	"github.com/rfjakob/gocryptfs/internal/tlog"
 )
@@ -50,50 +49,6 @@ var GitVersionFuse = pleaseBuildBash
 // Unix timestamp, set by build.bash
 var BuildTime = "0"
 
-// initDir initializes an empty directory for use as a gocryptfs cipherdir.
-func initDir(args *argContainer) {
-	err := checkDirEmpty(args.cipherdir)
-	if err != nil {
-		tlog.Fatal.Printf("Invalid cipherdir: %v", err)
-		os.Exit(ERREXIT_INIT)
-	}
-
-	// Create gocryptfs.conf
-	if args.extpass == "" {
-		tlog.Info.Printf("Choose a password for protecting your files.")
-	} else {
-		tlog.Info.Printf("Using password provided via -extpass.")
-	}
-	password := readpassword.Twice(args.extpass)
-	creator := tlog.ProgramName + " " + GitVersion
-	err = configfile.CreateConfFile(args.config, password, args.plaintextnames, args.scryptn, creator)
-	if err != nil {
-		tlog.Fatal.Println(err)
-		os.Exit(ERREXIT_INIT)
-	}
-
-	if !args.plaintextnames {
-		// Create gocryptfs.diriv in the root dir
-		err = nametransform.WriteDirIV(args.cipherdir)
-		if err != nil {
-			tlog.Fatal.Println(err)
-			os.Exit(ERREXIT_INIT)
-		}
-	}
-
-	tlog.Info.Printf(tlog.ColorGreen + "The filesystem has been created successfully." + tlog.ColorReset)
-	wd, _ := os.Getwd()
-	friendlyPath, _ := filepath.Rel(wd, args.cipherdir)
-	if strings.HasPrefix(friendlyPath, "../") {
-		// A relative path that starts with "../" is pretty unfriendly, just
-		// keep the absolute path.
-		friendlyPath = args.cipherdir
-	}
-	tlog.Info.Printf(tlog.ColorGrey+"You can now mount it using: %s %s MOUNTPOINT"+tlog.ColorReset,
-		tlog.ProgramName, friendlyPath)
-	os.Exit(0)
-}
-
 func usageText() {
 	printVersion()
 	fmt.Printf(`
@@ -157,7 +112,9 @@ func main() {
 	runtime.GOMAXPROCS(4)
 	var err error
 
-	args := parseCliArgs()
+	// Parse all command-line options (i.e. arguments starting with "-")
+	// into "args". Path arguments are parsed below.
+	args := parseCliOpts()
 
 	// Fork a child into the background if "-f" is not set AND we are mounting
 	// a filesystem. The child will do all the work.