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From: Kirk McKusick <mckusick@FreeBSD.org>
Date: Tue, 20 Jun 2017 21:26:42 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r320176 - head/sbin/newfs
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Author: mckusick
Date: Tue Jun 20 21:26:42 2017
New Revision: 320176
URL: https://svnweb.freebsd.org/changeset/base/320176

Log:
  Allow '_' in labels when specifying -L to newfs.
  
  Reported by: Keve Nagy
  Reviewed by: kib
  PR: 220163
  MFC after: 5 days

Modified:
  head/sbin/newfs/newfs.c

Modified: head/sbin/newfs/newfs.c
==============================================================================
--- head/sbin/newfs/newfs.c	Tue Jun 20 21:17:05 2017	(r320175)
+++ head/sbin/newfs/newfs.c	Tue Jun 20 21:26:42 2017	(r320176)
@@ -150,7 +150,8 @@ main(int argc, char *argv[])
 		case 'L':
 			volumelabel = optarg;
 			i = -1;
-			while (isalnum(volumelabel[++i]));
+			while (isalnum(volumelabel[++i]) ||
+			    volumelabel[i] == '_');
 			if (volumelabel[i] != '\0') {
 				errx(1, "bad volume label. Valid characters are alphanumerics.");
 			}