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 //kbuild:lib-$(CONFIG_FEATURE_VOLUMEID_SYSV) += sysv.o
24 //config:config FEATURE_VOLUMEID_SYSV
25 //config: bool "sysv filesystem"
27 //config: depends on VOLUMEID
32 #include "volume_id_internal.h"
34 #define SYSV_NICINOD 100
35 #define SYSV_NICFREE 50
43 uint32_t s_free
[SYSV_NICFREE
];
46 uint16_t s_inode
[SYSV_NICINOD
];
64 #define XENIX_NICINOD 100
65 #define XENIX_NICFREE 100
71 uint32_t s_free
[XENIX_NICFREE
];
73 uint16_t s_inode
[XENIX_NICINOD
];
90 #define SYSV_SUPERBLOCK_BLOCK 0x01
91 #define SYSV_MAGIC 0xfd187e20
92 #define XENIX_SUPERBLOCK_BLOCK 0x18
93 #define XENIX_MAGIC 0x2b5544
94 #define SYSV_MAX_BLOCKSIZE 0x800
96 int FAST_FUNC
volume_id_probe_sysv(struct volume_id
*id
/*,uint64_t off*/)
98 #define off ((uint64_t)0)
99 struct sysv_super
*vs
;
100 struct xenix_super
*xs
;
103 dbg("probing at offset 0x%llx", (unsigned long long) off
);
105 for (boff
= 0x200; boff
<= SYSV_MAX_BLOCKSIZE
; boff
<<= 1) {
106 vs
= volume_id_get_buffer(id
, off
+ (boff
* SYSV_SUPERBLOCK_BLOCK
), 0x200);
110 if (vs
->s_magic
== cpu_to_le32(SYSV_MAGIC
) || vs
->s_magic
== cpu_to_be32(SYSV_MAGIC
)) {
111 // volume_id_set_label_raw(id, vs->s_fname, 6);
112 volume_id_set_label_string(id
, vs
->s_fname
, 6);
113 IF_FEATURE_BLKID_TYPE(id
->type
= "sysv");
118 for (boff
= 0x200; boff
<= SYSV_MAX_BLOCKSIZE
; boff
<<= 1) {
119 xs
= volume_id_get_buffer(id
, off
+ (boff
+ XENIX_SUPERBLOCK_BLOCK
), 0x200);
123 if (xs
->s_magic
== cpu_to_le32(XENIX_MAGIC
) || xs
->s_magic
== cpu_to_be32(XENIX_MAGIC
)) {
124 // volume_id_set_label_raw(id, xs->s_fname, 6);
125 volume_id_set_label_string(id
, xs
->s_fname
, 6);
126 IF_FEATURE_BLKID_TYPE(id
->type
= "xenix";)
134 // volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);