2 * volume_id - reads filesystem label and uuid
4 * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 2 of the License, or
9 * (at your option) any later version.
11 * This program 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
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
31 #include "libvolume_id.h"
32 #include "libvolume_id-private.h"
34 #define SYSV_NICINOD 100
35 #define SYSV_NICFREE 50
44 uint32_t s_free[SYSV_NICFREE];
47 uint16_t s_inode[SYSV_NICINOD];
65 #define XENIX_NICINOD 100
66 #define XENIX_NICFREE 100
72 uint32_t s_free[XENIX_NICFREE];
74 uint16_t s_inode[XENIX_NICINOD];
91 #define SYSV_SUPERBLOCK_BLOCK 0x01
92 #define SYSV_MAGIC 0xfd187e20
93 #define XENIX_SUPERBLOCK_BLOCK 0x18
94 #define XENIX_MAGIC 0x2b5544
95 #define SYSV_MAX_BLOCKSIZE 0x800
97 int volume_id_probe_sysv(struct volume_id *id, uint64_t off, uint64_t size)
99 struct sysv_super *vs;
100 struct xenix_super *xs;
103 info("probing at offset 0x%" PRIx64 "\n", off);
105 for (boff = 0x200; boff <= SYSV_MAX_BLOCKSIZE; boff <<= 1) {
106 vs = (struct sysv_super *)
107 volume_id_get_buffer(id, off + (boff * SYSV_SUPERBLOCK_BLOCK), 0x200);
111 if (vs->s_magic == cpu_to_le32(SYSV_MAGIC) || vs->s_magic == cpu_to_be32(SYSV_MAGIC)) {
112 volume_id_set_label_raw(id, vs->s_fname, 6);
113 volume_id_set_label_string(id, vs->s_fname, 6);
119 for (boff = 0x200; boff <= SYSV_MAX_BLOCKSIZE; boff <<= 1) {
120 xs = (struct xenix_super *)
121 volume_id_get_buffer(id, off + (boff + XENIX_SUPERBLOCK_BLOCK), 0x200);
125 if (xs->s_magic == cpu_to_le32(XENIX_MAGIC) || xs->s_magic == cpu_to_be32(XENIX_MAGIC)) {
126 volume_id_set_label_raw(id, xs->s_fname, 6);
127 volume_id_set_label_string(id, xs->s_fname, 6);
136 volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);