Add helper GetCurrentUsername

currently we need this to get the username in windows
for mounting the shared directories, which is CIFS/SMB
based and needs the username for access

pkg/os/util_unix.go

@@ -8,6 +8,7 @@ import (
 	"fmt"
 	"os"
 	"os/exec"
+	"os/user"
 	"strconv"
 	"strings"
 
@@ -37,3 +38,11 @@ func RemoveFileAsRoot(reason, filepath string) error {
 	_, _, err := RunPrivileged(reason, "rm", "-fr", filepath)
 	return err
 }
+
+func GetCurrentUsername() (string, error) {
+	u, err := user.Current()
+	if err != nil {
+		return "", err
+	}
+	return u.Username, nil
+}

pkg/os/util_windows.go

@@ -2,7 +2,10 @@ package os
 
 import (
 	"bytes"
+	"errors"
 	"io/ioutil"
+	"os/user"
+	"strings"
 
 	"golang.org/x/text/encoding/unicode"
 	"golang.org/x/text/transform"
@@ -28,3 +31,15 @@ func ReadFileUTF16LE(filename string) ([]byte, error) {
 	decoded, err := ioutil.ReadAll(unicodeReader)
 	return decoded, err
 }
+
+func GetCurrentUsername() (string, error) {
+	u, err := user.Current()
+	if err != nil {
+		return "", err
+	}
+	userAndDomain := strings.Split(u.Username, "\\")
+	if len(userAndDomain) > 1 {
+		return userAndDomain[1], nil
+	}
+	return "", errors.New("unable to find the username of current user")
+}