Index: usr.sbin/fstyp/bfs.c
===================================================================
--- usr.sbin/fstyp/bfs.c
+++ usr.sbin/fstyp/bfs.c
@@ -1,11 +1,12 @@
-/*
+/*-
  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
  *
- * Copyright (c) 2021 Miguel Gocobachi <miguel@gocobachi.dev>
+ * Copyright (c) 2021 Miguel Gocobachi
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
+ *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ -23,7 +24,10 @@
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
+ *
+ * From: @(#)style      1.14 (Berkeley) 4/28/95
  */
+
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
@@ -34,7 +38,7 @@
 
 #include "fstyp.h"
 
-#define BFS_OS_NAME_LENGTH 	32
+#define BFS_OS_NAME_LENGTH	32
 #define BFS_SUPER_BLOCK_MAGIC1	0x42465331
 
 struct bfs_disk_superblock {
@@ -47,25 +51,23 @@
 {
 	struct bfs_disk_superblock *volume;
 
-	volume = read_buf(fp, 512, sizeof(*volume));
+	volume = (struct bfs_disk_superblock *) read_buf(fp, 512, sizeof(*volume));
 
 	if (volume == NULL) {
-		free(volume);
-
 		return (1);
 	}
 
-	if (volume->magic1 != BFS_SUPER_BLOCK_MAGIC1) {
+	if (volume->magic1 == BFS_SUPER_BLOCK_MAGIC1) {
+		bzero(label, size);
+		strlcpy(label, volume->name, MIN(size, BFS_OS_NAME_LENGTH));
+		rtrim(label, size);
+
 		free(volume);
 
-		return (1);
+		return (0);
 	}
 
-	bzero(label, size);
-	strlcpy(label, volume->name, MIN(size, BFS_OS_NAME_LENGTH));
-	rtrim(label, size);
-
 	free(volume);
 
-	return (0);
+	return (1);
 }
Index: usr.sbin/fstyp/fstyp.8
===================================================================
--- usr.sbin/fstyp/fstyp.8
+++ usr.sbin/fstyp/fstyp.8
@@ -42,7 +42,7 @@
 The
 .Nm
 utility is used to determine the filesystem type on a given device.
-It can recognize ISO-9660, exFAT, Ext2, FAT, NTFS, and UFS filesystems.
+It can recognize BFS (BeOS), ISO-9660, exFAT, Ext2, FAT, NTFS, and UFS filesystems.
 When the
 .Fl u
 flag is specified,
@@ -59,6 +59,8 @@
 as, respectively:
 .Bl -item -offset indent -compact
 .It
+bfs
+.It
 cd9660
 .It
 exfat