From 7c643ed2855058657798d9e8e80701023de14a08 Mon Sep 17 00:00:00 2001 From: Karel Zak Date: Wed, 17 Jul 2019 12:11:38 +0200 Subject: libfdisk: don't use FAT as MBR The current libfdisk MBR detection is too weak, the result is that it reuses MBR from FAT. The correct behavior is to create a new MBR, wipe first sector (on write) and warn about obsolete FAT superblock. Reported-by: Mike Fleetwood Signed-off-by: Karel Zak --- libfdisk/src/dos.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'libfdisk/src/dos.c') diff --git a/libfdisk/src/dos.c b/libfdisk/src/dos.c index 6dc276e8a..bd964db15 100644 --- a/libfdisk/src/dos.c +++ b/libfdisk/src/dos.c @@ -814,6 +814,10 @@ static int dos_probe_label(struct fdisk_context *cxt) if (!mbr_is_valid_magic(cxt->firstsector)) return 0; + /* ignore disks with FAT */ + if (cxt->collision && strcmp(cxt->collision, "vfat") == 0) + return 0; + dos_init(cxt); get_partition_table_geometry(cxt, &h, &s); -- cgit v1.2.3-55-g7522