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/*
libparted - a library for manipulating disk partitions
Copyright (C) 2001 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <config.h>
#include <parted/parted.h>
#include <parted/endian.h>
#define _JFS_UTILITY
#include "jfs_types.h"
#include "jfs_superblock.h"
#define JFS_SUPER_SECTOR 64
#if ENABLE_NLS
# include <libintl.h>
# define _(String) dgettext (PACKAGE, String)
#else
# define _(String) (String)
#endif /* ENABLE_NLS */
#define JFS_BLOCK_SIZES ((int[2]){512, 0})
static PedGeometry*
jfs_probe (PedGeometry* geom)
{
union {
struct superblock sb;
char bytes[512];
} buf;
if (geom->length < JFS_SUPER_SECTOR + 1)
return NULL;
if (!ped_geometry_read (geom, &buf, JFS_SUPER_SECTOR, 1))
return NULL;
if (strncmp (buf.sb.s_magic, JFS_MAGIC, 4) == 0) {
PedSector block_size = PED_LE32_TO_CPU (buf.sb.s_pbsize) / 512;
PedSector block_count = PED_LE64_TO_CPU (buf.sb.s_size);
return ped_geometry_new (geom->dev, geom->start,
block_size * block_count);
} else {
return NULL;
}
}
#ifndef DISCOVER_ONLY
static int
jfs_clobber (PedGeometry* geom)
{
char buf[512];
memset (buf, 0, 512);
return ped_geometry_write (geom, buf, JFS_SUPER_SECTOR, 1);
}
#endif /* !DISCOVER_ONLY */
static PedFileSystemOps jfs_ops = {
probe: jfs_probe,
#ifndef DISCOVER_ONLY
clobber: jfs_clobber,
#else
clobber: NULL,
#endif
open: NULL,
create: NULL,
close: NULL,
check: NULL,
copy: NULL,
resize: NULL,
get_create_constraint: NULL,
get_resize_constraint: NULL,
get_copy_constraint: NULL
};
static PedFileSystemType jfs_type = {
next: NULL,
ops: &jfs_ops,
name: "jfs",
block_sizes: JFS_BLOCK_SIZES
};
void
ped_file_system_jfs_init ()
{
ped_file_system_type_register (&jfs_type);
}
void
ped_file_system_jfs_done ()
{
ped_file_system_type_unregister (&jfs_type);
}
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