chore: import upstream snapshot with attribution

webmin/change_lock.cgi

@@ -0,0 +1,26 @@
+#!/usr/local/bin/perl
+# Save file locking settings
+
+require './webmin-lib.pl';
+&ReadParse();
+
+# Validate inputs
+&error_setup($text{'lock_err'});
+if ($in{'lockmode'} >= 2) {
+	@dirs = split(/\n+/, $in{'lockdirs'});
+	foreach $d (@dirs) {
+		$d =~ /^\// || &error(&text('lock_edir', $d));
+		}
+	@dirs || &error($text{'lock_edirs'});
+	}
+
+# Write out config
+&lock_file($config_file);
+$gconfig{'lockmode'} = $in{'lockmode'};
+$gconfig{'lockdirs'} = join("\t", @dirs);
+&save_module_config(\%gconfig, "");
+&unlock_file($config_file);
+&webmin_log("lock");
+
+&redirect("");
+