mount: resolve home directory

fix https://github.com/chrislusf/seaweedfs/issues/1391

weed/command/mount_std.go

@@ -69,7 +69,7 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
 	}
 
 	filerMountRootPath := *option.filerMountRootPath
-	dir := *option.dir
+	dir := util.ResolvePath(*option.dir)
 	chunkSizeLimitMB := *mountOptions.chunkSizeLimitMB
 
 	util.LoadConfiguration("security", false)

weed/util/file_util.go

@@ -3,6 +3,9 @@ package util
 import (
 	"errors"
 	"os"
+	"os/user"
+	"path/filepath"
+	"strings"
 	"time"
 
 	"github.com/chrislusf/seaweedfs/weed/glog"
@@ -63,3 +66,20 @@ func CheckFile(filename string) (exists, canRead, canWrite bool, modTime time.Ti
 	fileSize = fi.Size()
 	return
 }
+
+func ResolvePath(path string) string {
+
+	usr, _ := user.Current()
+	dir := usr.HomeDir
+
+	if path == "~" {
+		// In case of "~", which won't be caught by the "else if"
+		path = dir
+	} else if strings.HasPrefix(path, "~/") {
+		// Use strings.HasPrefix so we don't match paths like
+		// "/something/~/something/"
+		path = filepath.Join(dir, path[2:])
+	}
+
+	return path
+}