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/*
apfs.c -- parted support for apfs file systems
Copyright (C) 1998-2000, 2007, 2009-2013 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <parted/parted.h>
#include <parted/debug.h>
#include <parted/endian.h>
#include "amiga.h"
#include "apfs.h"
#if ENABLE_NLS
# include <libintl.h>
# define _(String) dgettext (PACKAGE, String)
#else
# define _(String) (String)
#endif /* ENABLE_NLS */
static int
_apfs_probe_root (uint32_t *block, uint32_t blocksize, uint32_t kind) {
if (PED_BE32_TO_CPU (block[0]) != kind) return 0;
return 1;
}
static PedGeometry*
_generic_apfs_probe (PedGeometry* geom, uint32_t kind)
{
uint32_t *block;
PedSector root;
struct PartitionBlock * part;
uint32_t blocksize = 1, reserved = 2;
PED_ASSERT (geom != NULL);
PED_ASSERT (geom->dev != NULL);
/* Finds the blocksize and reserved values of the partition block */
if (!(part = ped_malloc (PED_SECTOR_SIZE_DEFAULT*blocksize))) {
ped_exception_throw(PED_EXCEPTION_ERROR, PED_EXCEPTION_CANCEL,
_("%s : Failed to allocate partition block\n"), __func__);
goto error_part;
}
if (amiga_find_part(geom, part) != NULL) {
reserved = PED_BE32_TO_CPU (part->de_Reserved);
blocksize = PED_BE32_TO_CPU (part->de_SizeBlock)
* PED_BE32_TO_CPU (part->de_SectorPerBlock) / 128;
}
free (part);
/* Test boot block */
if (!(block = ped_malloc (PED_SECTOR_SIZE_DEFAULT*blocksize))) {
ped_exception_throw(PED_EXCEPTION_ERROR, PED_EXCEPTION_CANCEL,
_("%s : Failed to allocate block\n"), __func__);
goto error_block;
}
if (!ped_device_read (geom->dev, block, geom->start, blocksize)) {
ped_exception_throw(PED_EXCEPTION_ERROR, PED_EXCEPTION_CANCEL,
_("%s : Couldn't read boot block %llu\n"), __func__, geom->start);
goto error;
}
if (PED_BE32_TO_CPU (block[0]) != kind) {
goto error;
}
/* Find and test the root block */
root = geom->start+reserved*blocksize;
if (!ped_device_read (geom->dev, block, root, blocksize)) {
ped_exception_throw(PED_EXCEPTION_ERROR, PED_EXCEPTION_CANCEL,
_("%s : Couldn't read root block %llu\n"), __func__, root);
goto error;
}
if (_apfs_probe_root(block, blocksize, kind) == 1) {
free(block);
return ped_geometry_duplicate (geom);
}
error:
free (block);
error_block:
error_part:
return NULL;
}
static PedGeometry*
_apfs1_probe (PedGeometry* geom) {
return _generic_apfs_probe (geom, 0x50463101);
}
static PedGeometry*
_apfs2_probe (PedGeometry* geom) {
return _generic_apfs_probe (geom, 0x50463102);
}
static PedFileSystemOps _apfs1_ops = {
probe: _apfs1_probe,
};
static PedFileSystemOps _apfs2_ops = {
probe: _apfs2_probe,
};
#define APFS_BLOCK_SIZES ((int[2]){512, 0})
PedFileSystemType _apfs1_type = {
next: NULL,
ops: &_apfs1_ops,
name: "apfs1",
block_sizes: APFS_BLOCK_SIZES
};
PedFileSystemType _apfs2_type = {
next: NULL,
ops: &_apfs2_ops,
name: "apfs2",
block_sizes: APFS_BLOCK_SIZES
};
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