diff options
| author | Karel Zak <kzak@redhat.com> | 2008-11-13 17:32:14 +0100 |
|---|---|---|
| committer | Kay Sievers <kay.sievers@vrfy.org> | 2008-11-13 17:32:14 +0100 |
| commit | 3e39ff63658ed76398d0ee98f361221744fe591f (patch) | |
| tree | eedad9fcf42ada632b6e27ad7905c7b155190a36 /extras/volume_id | |
| parent | 1d36813d4c3353c1194d3a7cdb31ac6f64a66e8f (diff) | |
volume_id: fat - move check for msdos signature (0x55 0xaa)
Make the msdos signature (0x55 0xaa) at 510 and 511 optional when
the standard FAT magic string is present.
Diffstat (limited to 'extras/volume_id')
| -rw-r--r-- | extras/volume_id/lib/fat.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/extras/volume_id/lib/fat.c b/extras/volume_id/lib/fat.c index 95735c2d2d..e30318cf09 100644 --- a/extras/volume_id/lib/fat.c +++ b/extras/volume_id/lib/fat.c @@ -281,10 +281,6 @@ int volume_id_probe_vfat(struct volume_id *id, uint64_t off, uint64_t size) if (buf == NULL) return -1; - /* check signature */ - if (buf[510] != 0x55 || buf[511] != 0xaa) - return -1; - vs = (struct vfat_super_block *) buf; if (memcmp(vs->sysid, "NTFS", 4) == 0) return -1; @@ -305,6 +301,10 @@ int volume_id_probe_vfat(struct volume_id *id, uint64_t off, uint64_t size) if (memcmp(vs->type.fat.magic, "FAT12 ", 8) == 0) goto magic; + /* check signature */ + if (buf[510] != 0x55 || buf[511] != 0xaa) + return -1; + /* some old floppies don't have a magic, expect the boot jump address to match */ if ((vs->boot_jump[0] != 0xeb || vs->boot_jump[2] != 0x90) && vs->boot_jump[0] != 0xe9) |