busybox/util-linux/volume_id/unused_minix.c
Denys Vlasenko f560422fa0 Big cleanup in config help and description
Redundant help texts (one which only repeats the description)
are deleted.

Descriptions and help texts are trimmed.

Some config options are moved, even across menus.

No config option _names_ are changed.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-10 14:58:54 +01:00

83 lines
2.1 KiB
C

/*
* volume_id - reads filesystem label and uuid
*
* Copyright (C) 2005 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_MINIX) += minix.o
//config:### config FEATURE_VOLUMEID_MINIX
//config:### bool "minix filesystem"
//config:### default y
//config:### depends on VOLUMEID
#include "volume_id_internal.h"
struct minix_super_block {
uint16_t s_ninodes;
uint16_t s_nzones;
uint16_t s_imap_blocks;
uint16_t s_zmap_blocks;
uint16_t s_firstdatazone;
uint16_t s_log_zone_size;
uint32_t s_max_size;
uint16_t s_magic;
uint16_t s_state;
uint32_t s_zones;
} PACKED;
#define MINIX_SUPERBLOCK_OFFSET 0x400
int FAST_FUNC volume_id_probe_minix(struct volume_id *id, uint64_t off)
{
struct minix_super_block *ms;
dbg("probing at offset 0x%llx", (unsigned long long) off);
ms = volume_id_get_buffer(id, off + MINIX_SUPERBLOCK_OFFSET, 0x200);
if (ms == NULL)
return -1;
if (ms->s_magic == cpu_to_le16(0x137f)) {
// id->type_version[0] = '1';
goto found;
}
if (ms->s_magic == cpu_to_le16(0x1387)) {
// id->type_version[0] = '1';
goto found;
}
if (ms->s_magic == cpu_to_le16(0x2468)) {
// id->type_version[0] = '2';
goto found;
}
if (ms->s_magic == cpu_to_le16(0x2478)) {
// id->type_version[0] = '2';
goto found;
}
return -1;
found:
// id->type_version[1] = '\0';
// volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
// id->type = "minix";
return 0;
}