From c1f45d6d611db9bab39b69eb93151995a8337dce Mon Sep 17 00:00:00 2001
From: Jamie Cameron <jcameron@webmin.com>
Date: Mon, 22 Jul 2024 16:11:37 -0700
Subject: [PATCH] When running a command as a different user, the username
 needs to be passed to switch_to_unix_user so that all the secondary groups
 can be populated https://github.com/webmin/webmin/issues/2223

---
 proc/proc-lib.pl | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/proc/proc-lib.pl b/proc/proc-lib.pl
index 5aa195232..d59f594b9 100755
--- a/proc/proc-lib.pl
+++ b/proc/proc-lib.pl
@@ -286,8 +286,9 @@ if (!$@) {
 
 		close(STDIN); close(STDOUT); close(STDERR);
 		untie(*STDIN); untie(*STDOUT); untie(*STDERR);
-		if ($_[1]) {
-			&switch_to_unix_user([ undef, undef, $_[1], $_[2] ]);
+		if ($uid) {
+			my $username = getpwuid($uid);
+			&switch_to_unix_user([ $username, undef, $uid, $gid ]);
 			}
 
 		close($ptyfh);		# Used by other side only