2 * volume_id - reads filesystem label and uuid
4 * Copyright (C) 2004 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 struct oracleasm_super_block {
39 #define ASM_SB_OFF 0x20
40 #define ASM_MAGIC "ORCLDISK"
43 * Detect Oracle Automatic Storage Management (ASM).
44 * It can do mirroring, but don't consider it RAID in the sense
45 * that an ext3 filesystem could live inside. Thus, mark it 'other'.
46 * There also is a magic word 'ORCLCLRD'; like blkid(8), we ignore that.
48 int volume_id_probe_oracleasm(struct volume_id *id, uint64_t off, uint64_t size)
51 struct oracleasm_super_block *oracleasm;
53 info("probing at offset 0x%llx\n", (unsigned long long) off);
55 buf = volume_id_get_buffer(id, off + ASM_SB_OFF, 0x800);
59 oracleasm = (struct oracleasm_super_block *) buf;
61 if (memcmp(oracleasm->tag, ASM_MAGIC, 8) != 0)
64 volume_id_set_usage(id, VOLUME_ID_OTHER);
65 volume_id_set_label_raw(id, oracleasm->id, 24);
66 volume_id_set_label_string(id, oracleasm->id, 24);
67 id->type = "oracleasm";