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/*
* volume_id - reads filesystem label and uuid
*
* Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
//kbuild:lib-$(CONFIG_FEATURE_VOLUMEID_JFS) += jfs.o
//config:
//config:config FEATURE_VOLUMEID_JFS
//config: bool "jfs filesystem"
//config: default y
//config: depends on VOLUMEID
//config: help
//config: TODO
//config:
#include "volume_id_internal.h"
struct jfs_super_block {
uint8_t magic[4];
uint32_t version;
uint64_t size;
uint32_t bsize;
uint32_t dummy1;
uint32_t pbsize;
uint32_t dummy2[27];
uint8_t uuid[16];
uint8_t label[16];
uint8_t loguuid[16];
} PACKED;
#define JFS_SUPERBLOCK_OFFSET 0x8000
int FAST_FUNC volume_id_probe_jfs(struct volume_id *id /*,uint64_t off*/)
{
#define off ((uint64_t)0)
struct jfs_super_block *js;
dbg("probing at offset 0x%llx", (unsigned long long) off);
js = volume_id_get_buffer(id, off + JFS_SUPERBLOCK_OFFSET, 0x200);
if (js == NULL)
return -1;
if (memcmp(js->magic, "JFS1", 4) != 0)
return -1;
// volume_id_set_label_raw(id, js->label, 16);
volume_id_set_label_string(id, js->label, 16);
volume_id_set_uuid(id, js->uuid, UUID_DCE);
// volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
IF_FEATURE_BLKID_TYPE(id->type = "jfs";)
return 0;
}
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