From: usertam <code@usertam.dev>
Date: Thu, 29 May 2025 11:19:06 +0000 (+0800)
Subject: mkgnutar.pl: avoid uninitialized username variable
X-Git-Tag: v1.47.3-rc3~18^2
X-Git-Url: http://git.ipfire.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=9217c359db1d1b6d031a0e2ca9a885634fed00da;p=thirdparty%2Fe2fsprogs.git

mkgnutar.pl: avoid uninitialized username variable

This can happen when the running uid is dynamically allocated
without a proper user entry or name.
---

diff --git a/tests/m_rootgnutar/mkgnutar.pl b/tests/m_rootgnutar/mkgnutar.pl
index 516124cd..2513b9b7 100644
--- a/tests/m_rootgnutar/mkgnutar.pl
+++ b/tests/m_rootgnutar/mkgnutar.pl
@@ -59,7 +59,7 @@ foreach my $fname (@entries) {
     my $content = "";
     my $type;
     my $linkname = "";
-    my $username = $ENV{LOGNAME} || $ENV{USER} || getpwuid($<);
+    my $username = $ENV{LOGNAME} || $ENV{USER} || getpwuid($<) || "";
     if (S_ISLNK($mode)) {
         $type     = 2;
         $linkname = readlink $fname;