hush/util-linux/volume_id/unused_hpfs.c
Denys Vlasenko 893009644f volume_id: add FAST_FUNC where appropriate
function                                             old     new   delta
volume_id_probe_iso9660                              324     327      +3
volume_id_probe_vfat                                 902     903      +1
volume_id_probe_udf                                  576     577      +1
volume_id_probe_ntfs                                 314     315      +1
uuidcache_check_device                               292     291      -1
volume_id_probe_xfs                                   87      85      -2
volume_id_probe_sysv                                 165     163      -2
volume_id_probe_romfs                                 89      87      -2
volume_id_probe_reiserfs                             236     234      -2
volume_id_probe_ocfs2                                 96      94      -2
volume_id_probe_luks                                  78      76      -2
volume_id_probe_linux_swap                           165     163      -2
volume_id_probe_jfs                                   96      94      -2
volume_id_probe_hfs_hfsplus                          795     793      -2
volume_id_probe_ext                                   82      80      -2
volume_id_probe_cramfs                                59      57      -2
volume_id_probe_btrfs                                 96      94      -2
free_volume_id                                        36      31      -5
volume_id_probe_linux_raid                           127     119      -8
volume_id_probe_all                                  152     138     -14
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/16 up/down: 6/-52)            Total: -46 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2009-11-01 23:07:18 +01:00

49 lines
1.4 KiB
C

/*
* 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;
} PACKED;
#define HPFS_SUPERBLOCK_OFFSET 0x2000
int FAST_FUNC 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;
}