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 it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation version 2 of the License.
26 #include "libvolume_id.h"
29 #define SYSV_NICINOD 100
30 #define SYSV_NICFREE 50
39 uint32_t s_free[SYSV_NICFREE];
42 uint16_t s_inode[SYSV_NICINOD];
60 #define XENIX_NICINOD 100
61 #define XENIX_NICFREE 100
67 uint32_t s_free[XENIX_NICFREE];
69 uint16_t s_inode[XENIX_NICINOD];
86 #define SYSV_SUPERBLOCK_BLOCK 0x01
87 #define SYSV_MAGIC 0xfd187e20
88 #define XENIX_SUPERBLOCK_BLOCK 0x18
89 #define XENIX_MAGIC 0x2b5544
90 #define SYSV_MAX_BLOCKSIZE 0x800
92 int volume_id_probe_sysv(struct volume_id *id, uint64_t off, uint64_t size)
94 struct sysv_super *vs;
95 struct xenix_super *xs;
98 info("probing at offset 0x%llx", (unsigned long long) off);
100 for (boff = 0x200; boff <= SYSV_MAX_BLOCKSIZE; boff <<= 1) {
101 vs = (struct sysv_super *)
102 volume_id_get_buffer(id, off + (boff * SYSV_SUPERBLOCK_BLOCK), 0x200);
106 if (vs->s_magic == cpu_to_le32(SYSV_MAGIC) || vs->s_magic == cpu_to_be32(SYSV_MAGIC)) {
107 volume_id_set_label_raw(id, vs->s_fname, 6);
108 volume_id_set_label_string(id, vs->s_fname, 6);
114 for (boff = 0x200; boff <= SYSV_MAX_BLOCKSIZE; boff <<= 1) {
115 xs = (struct xenix_super *)
116 volume_id_get_buffer(id, off + (boff + XENIX_SUPERBLOCK_BLOCK), 0x200);
120 if (xs->s_magic == cpu_to_le32(XENIX_MAGIC) || xs->s_magic == cpu_to_be32(XENIX_MAGIC)) {
121 volume_id_set_label_raw(id, xs->s_fname, 6);
122 volume_id_set_label_string(id, xs->s_fname, 6);
131 volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);