15d0a860e9
Config instructions for util-linux/volume_id are moved into the source files according to the new config feature. No code change. Signed-off-by: Sven-Göran Bergh <sgb@systemasis.org> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
137 lines
3.5 KiB
C
137 lines
3.5 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_SYSV) += sysv.o
|
|
|
|
//config:
|
|
//config:config FEATURE_VOLUMEID_SYSV
|
|
//config: bool "sysv filesystem"
|
|
//config: default y
|
|
//config: depends on VOLUMEID
|
|
//config: help
|
|
//config: TODO
|
|
//config:
|
|
|
|
#include "volume_id_internal.h"
|
|
|
|
#define SYSV_NICINOD 100
|
|
#define SYSV_NICFREE 50
|
|
|
|
struct sysv_super {
|
|
uint16_t s_isize;
|
|
uint16_t s_pad0;
|
|
uint32_t s_fsize;
|
|
uint16_t s_nfree;
|
|
uint16_t s_pad1;
|
|
uint32_t s_free[SYSV_NICFREE];
|
|
uint16_t s_ninode;
|
|
uint16_t s_pad2;
|
|
uint16_t s_inode[SYSV_NICINOD];
|
|
uint8_t s_flock;
|
|
uint8_t s_ilock;
|
|
uint8_t s_fmod;
|
|
uint8_t s_ronly;
|
|
uint32_t s_time;
|
|
uint16_t s_dinfo[4];
|
|
uint32_t s_tfree;
|
|
uint16_t s_tinode;
|
|
uint16_t s_pad3;
|
|
uint8_t s_fname[6];
|
|
uint8_t s_fpack[6];
|
|
uint32_t s_fill[12];
|
|
uint32_t s_state;
|
|
uint32_t s_magic;
|
|
uint32_t s_type;
|
|
} PACKED;
|
|
|
|
#define XENIX_NICINOD 100
|
|
#define XENIX_NICFREE 100
|
|
|
|
struct xenix_super {
|
|
uint16_t s_isize;
|
|
uint32_t s_fsize;
|
|
uint16_t s_nfree;
|
|
uint32_t s_free[XENIX_NICFREE];
|
|
uint16_t s_ninode;
|
|
uint16_t s_inode[XENIX_NICINOD];
|
|
uint8_t s_flock;
|
|
uint8_t s_ilock;
|
|
uint8_t s_fmod;
|
|
uint8_t s_ronly;
|
|
uint32_t s_time;
|
|
uint32_t s_tfree;
|
|
uint16_t s_tinode;
|
|
uint16_t s_dinfo[4];
|
|
uint8_t s_fname[6];
|
|
uint8_t s_fpack[6];
|
|
uint8_t s_clean;
|
|
uint8_t s_fill[371];
|
|
uint32_t s_magic;
|
|
uint32_t s_type;
|
|
} PACKED;
|
|
|
|
#define SYSV_SUPERBLOCK_BLOCK 0x01
|
|
#define SYSV_MAGIC 0xfd187e20
|
|
#define XENIX_SUPERBLOCK_BLOCK 0x18
|
|
#define XENIX_MAGIC 0x2b5544
|
|
#define SYSV_MAX_BLOCKSIZE 0x800
|
|
|
|
int FAST_FUNC volume_id_probe_sysv(struct volume_id *id /*,uint64_t off*/)
|
|
{
|
|
#define off ((uint64_t)0)
|
|
struct sysv_super *vs;
|
|
struct xenix_super *xs;
|
|
unsigned boff;
|
|
|
|
dbg("probing at offset 0x%llx", (unsigned long long) off);
|
|
|
|
for (boff = 0x200; boff <= SYSV_MAX_BLOCKSIZE; boff <<= 1) {
|
|
vs = volume_id_get_buffer(id, off + (boff * SYSV_SUPERBLOCK_BLOCK), 0x200);
|
|
if (vs == NULL)
|
|
return -1;
|
|
|
|
if (vs->s_magic == cpu_to_le32(SYSV_MAGIC) || vs->s_magic == cpu_to_be32(SYSV_MAGIC)) {
|
|
// volume_id_set_label_raw(id, vs->s_fname, 6);
|
|
volume_id_set_label_string(id, vs->s_fname, 6);
|
|
IF_FEATURE_BLKID_TYPE(id->type = "sysv");
|
|
goto found;
|
|
}
|
|
}
|
|
|
|
for (boff = 0x200; boff <= SYSV_MAX_BLOCKSIZE; boff <<= 1) {
|
|
xs = volume_id_get_buffer(id, off + (boff + XENIX_SUPERBLOCK_BLOCK), 0x200);
|
|
if (xs == NULL)
|
|
return -1;
|
|
|
|
if (xs->s_magic == cpu_to_le32(XENIX_MAGIC) || xs->s_magic == cpu_to_be32(XENIX_MAGIC)) {
|
|
// volume_id_set_label_raw(id, xs->s_fname, 6);
|
|
volume_id_set_label_string(id, xs->s_fname, 6);
|
|
IF_FEATURE_BLKID_TYPE(id->type = "xenix";)
|
|
goto found;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
|
|
found:
|
|
// volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
|
|
return 0;
|
|
}
|