volume_id: disable detection routines which are not setting label and uuid anyway

function                                             old     new   delta
static.warn                                            1       -      -1
static.drive_name_string                              14      12      -2
static.offsets                                         8       -      -8
static.sectors                                        10       -     -10
fs2                                                   60      48     -12
raid2                                                 16       -     -16
uuidcache_init                                       704     677     -27
raid1                                                 32       -     -32
volume_id_probe_all                                  198     158     -40
volume_id_probe_lvm1                                  58       -     -58
volume_id_probe_highpoint_37x_raid                    63       -     -63
volume_id_probe_hpfs                                  67       -     -67
volume_id_probe_minix                                 74       -     -74
volume_id_probe_lvm2                                  78       -     -78
volume_id_probe_silicon_medley_raid                   97       -     -97
volume_id_probe_via_raid                             101       -    -101
volume_id_probe_highpoint_45x_raid                   104       -    -104
volume_id_probe_nvidia_raid                          108       -    -108
volume_id_probe_lsi_mega_raid                        108       -    -108
volume_id_probe_intel_software_raid                  108       -    -108
volume_id_probe_ufs                                  126       -    -126
volume_id_probe_promise_fasttrack_raid               144       -    -144
------------------------------------------------------------------------------
(add/remove: 0/18 grow/shrink: 0/4 up/down: 0/-1384)        Total: -1384 bytes
   text    data     bss     dec     hex filename
 794244     662    7420  802326   c3e16 busybox_old
 792698     662    7420  800780   c380c busybox_unstripped

1 files changed, 49 insertions, 0 deletions

diff --git a/util-linux/volume_id/unused_hpfs.c b/util-linux/volume_id/unused_hpfs.c
new file mode 100644
index 0000000..8b51756
--- /dev/null
+++ b/util-linux/volume_id/unused_hpfs.c
@@ -0,0 +1,49 @@
+/*
+ * volume_id - reads filesystem label and uuid
+ *
+ * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ *	This library is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU Lesser General Public
+ *	License as published by the Free Software Foundation; either
+ *	version 2.1 of the License, or (at your option) any later version.
+ *
+ *	This library is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ *	Lesser General Public License for more details.
+ *
+ *	You should have received a copy of the GNU Lesser General Public
+ *	License along with this library; if not, write to the Free Software
+ *	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "volume_id_internal.h"
+
+struct hpfs_super
+{
+	uint8_t		magic[4];
+	uint8_t		version;
+} __attribute__((__packed__));
+
+#define HPFS_SUPERBLOCK_OFFSET			0x2000
+
+int volume_id_probe_hpfs(struct volume_id *id, uint64_t off)
+{
+	struct hpfs_super *hs;
+
+	dbg("probing at offset 0x%llx", (unsigned long long) off);
+
+	hs = volume_id_get_buffer(id, off + HPFS_SUPERBLOCK_OFFSET, 0x200);
+	if (hs == NULL)
+		return -1;
+
+	if (memcmp(hs->magic, "\x49\xe8\x95\xf9", 4) == 0) {
+//		sprintf(id->type_version, "%u", hs->version);
+//		volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
+//		id->type = "hpfs";
+		return 0;
+	}
+
+	return -1;
+}