2 * volume_id - reads filesystem label and uuid
4 * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include "volume_id_internal.h"
23 #define SYSV_NICINOD 100
24 #define SYSV_NICFREE 50
32 uint32_t s_free
[SYSV_NICFREE
];
35 uint16_t s_inode
[SYSV_NICINOD
];
53 #define XENIX_NICINOD 100
54 #define XENIX_NICFREE 100
60 uint32_t s_free
[XENIX_NICFREE
];
62 uint16_t s_inode
[XENIX_NICINOD
];
79 #define SYSV_SUPERBLOCK_BLOCK 0x01
80 #define SYSV_MAGIC 0xfd187e20
81 #define XENIX_SUPERBLOCK_BLOCK 0x18
82 #define XENIX_MAGIC 0x2b5544
83 #define SYSV_MAX_BLOCKSIZE 0x800
85 int FAST_FUNC
volume_id_probe_sysv(struct volume_id
*id
/*,uint64_t off*/)
87 #define off ((uint64_t)0)
88 struct sysv_super
*vs
;
89 struct xenix_super
*xs
;
92 dbg("probing at offset 0x%llx", (unsigned long long) off
);
94 for (boff
= 0x200; boff
<= SYSV_MAX_BLOCKSIZE
; boff
<<= 1) {
95 vs
= volume_id_get_buffer(id
, off
+ (boff
* SYSV_SUPERBLOCK_BLOCK
), 0x200);
99 if (vs
->s_magic
== cpu_to_le32(SYSV_MAGIC
) || vs
->s_magic
== cpu_to_be32(SYSV_MAGIC
)) {
100 // volume_id_set_label_raw(id, vs->s_fname, 6);
101 volume_id_set_label_string(id
, vs
->s_fname
, 6);
102 IF_FEATURE_BLKID_TYPE(id
->type
= "sysv");
107 for (boff
= 0x200; boff
<= SYSV_MAX_BLOCKSIZE
; boff
<<= 1) {
108 xs
= volume_id_get_buffer(id
, off
+ (boff
+ XENIX_SUPERBLOCK_BLOCK
), 0x200);
112 if (xs
->s_magic
== cpu_to_le32(XENIX_MAGIC
) || xs
->s_magic
== cpu_to_be32(XENIX_MAGIC
)) {
113 // volume_id_set_label_raw(id, xs->s_fname, 6);
114 volume_id_set_label_string(id
, xs
->s_fname
, 6);
115 IF_FEATURE_BLKID_TYPE(id
->type
= "xenix";)
123 // volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);