Add a "-l" flag to newfs, which sets the FS_MULTILABEL flag. This

permits users of newfs to set the multilabel flag on UFS1 and UFS2
file systems from inception without using tunefs.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, McAfee Research

sbin/newfs/mkfs.c

@@ -139,6 +139,8 @@ mkfs(struct partition *pp, char *fsys)
 		sblock.fs_flags |= FS_DOSOFTDEP;
 	if (Lflag)
 		strlcpy(sblock.fs_volname, volumelabel, MAXVOLLEN);
+	if (lflag)
+		sblock.fs_flags |= FS_MULTILABEL;
 	/*
 	 * Validate the given file system size.
 	 * Verify that its last block can actually be accessed.

sbin/newfs/newfs.8

@@ -40,7 +40,7 @@
 .Nd construct a new UFS1/UFS2 file system
 .Sh SYNOPSIS
 .Nm
-.Op Fl NU
+.Op Fl NUl
 .Op Fl L Ar volname
 .Op Fl O Ar filesystem-type
 .Op Fl S Ar sector-size
@@ -149,6 +149,8 @@ If fewer inodes are desired, a larger number should be used;
 to create more inodes a smaller number should be given.
 One inode is required for each distinct file, so this value effectively
 specifies the average file size on the file system.
+.It Fl l
+Enables multilabel MAC on the new file system.
 .It Fl m Ar free-space
 The percentage of space reserved from normal users; the minimum free
 space threshold.

sbin/newfs/newfs.c

@@ -120,6 +120,7 @@ int	Oflag = 2;		/* file system format (1 => UFS1, 2 => UFS2) */
 int	Rflag;			/* regression test */
 int	Uflag;			/* enable soft updates for file system */
 int	Eflag = 0;		/* exit in middle of newfs for testing */
+int	lflag;			/* enable multilabel for file system */
 quad_t	fssize;			/* file system size */
 int	sectorsize;		/* bytes/sector */
 int	realsectorsize;		/* bytes/sector in hardware */
@@ -157,7 +158,7 @@ main(int argc, char *argv[])
 	off_t mediasize;
 
 	while ((ch = getopt(argc, argv,
-	    "EL:NO:RS:T:Ua:b:c:d:e:f:g:h:i:m:o:s:")) != -1)
+	    "EL:NO:RS:T:Ua:b:c:d:e:f:g:h:i:lm:o:s:")) != -1)
 		switch (ch) {
 		case 'E':
 			Eflag++;
@@ -239,6 +240,9 @@ main(int argc, char *argv[])
 			if ((density = atoi(optarg)) <= 0)
 				errx(1, "%s: bad bytes per inode", optarg);
 			break;
+		case 'l':
+			lflag = 1;
+			break;
 		case 'm':
 			if ((minfree = atoi(optarg)) < 0 || minfree > 99)
 				errx(1, "%s: bad free space %%", optarg);

sbin/newfs/newfs.h

@@ -53,6 +53,7 @@ extern int	Oflag;		/* build UFS1 format file system */
 extern int	Rflag;		/* regression test */
 extern int	Uflag;		/* enable soft updates for file system */
 extern int	Eflag;		/* exit as if error, for testing */
+extern int	lflag;		/* enable multilabel MAC for file system */
 extern quad_t	fssize;		/* file system size */
 extern int	sectorsize;	/* bytes/sector */
 extern int	realsectorsize;	/* bytes/sector in hardware*/