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nest-open-source / nest-learning-thermostat / 5.1.6 / parted / 5e6df4cb02d098e59b66bd8a13535e1d92a33dcb / . / parted-1.8.7 / libparted / fs / hfs / hfs.c
blob: 3323cc0238929e7749bf27819a8814305c4500c8 [file] [log] [blame]
/*
libparted - a library for manipulating disk partitions
Copyright (C) 2000, 2003, 2004, 2005, 2007 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
*/
/*
Author : Guillaume Knispel <k_guillaume@libertysurf.fr>
Report bug to <bug-parted@gnu.org>
*/
#include <config.h>
#include <parted/parted.h>
#include <parted/endian.h>
#include <parted/debug.h>
#include <stdint.h>
#if ENABLE_NLS
# include <libintl.h>
# define _(String) dgettext (PACKAGE, String)
#else
# define _(String) (String)
#endif /* ENABLE_NLS */
#include "hfs.h"
#include "probe.h"
uint8_t* hfs_block = NULL;
uint8_t* hfsp_block = NULL;
unsigned hfs_block_count;
unsigned hfsp_block_count;
#define HFS_BLOCK_SIZES ((int[2]){512, 0})
#define HFSP_BLOCK_SIZES ((int[2]){512, 0})
#define HFSX_BLOCK_SIZES ((int[2]){512, 0})
#ifndef DISCOVER_ONLY
#include "file.h"
#include "reloc.h"
#include "advfs.h"
static PedFileSystemType hfs_type;
static PedFileSystemType hfsplus_type;
/* ----- HFS ----- */
/* This is a very unundoable operation */
/* Maybe I shouldn't touch the alternate MDB ? */
/* Anyway clobber is call before other fs creation */
/* So this is a non-issue */
static int
hfs_clobber (PedGeometry* geom)
{
uint8_t buf[PED_SECTOR_SIZE_DEFAULT];
memset (buf, 0, PED_SECTOR_SIZE_DEFAULT);
/* destroy boot blocks, mdb, alternate mdb ... */
return (!!ped_geometry_write (geom, buf, 0, 1)) &
(!!ped_geometry_write (geom, buf, 1, 1)) &
(!!ped_geometry_write (geom, buf, 2, 1)) &
(!!ped_geometry_write (geom, buf, geom->length - 2, 1)) &
(!!ped_geometry_write (geom, buf, geom->length - 1, 1)) &
(!!ped_geometry_sync (geom));
}
static PedFileSystem*
hfs_open (PedGeometry* geom)
{
uint8_t buf[PED_SECTOR_SIZE_DEFAULT];
PedFileSystem* fs;
HfsMasterDirectoryBlock* mdb;
HfsPrivateFSData* priv_data;
if (!hfsc_can_use_geom (geom))
return NULL;
/* Read MDB */
if (!ped_geometry_read (geom, buf, 2, 1))
return NULL;
/* Allocate memory */
fs = (PedFileSystem*) ped_malloc (sizeof (PedFileSystem));
if (!fs) goto ho;
mdb = (HfsMasterDirectoryBlock*)
ped_malloc (sizeof (HfsMasterDirectoryBlock));
if (!mdb) goto ho_fs;
priv_data = (HfsPrivateFSData*)
ped_malloc (sizeof (HfsPrivateFSData));
if (!priv_data) goto ho_mdb;
memcpy (mdb, buf, sizeof (HfsMasterDirectoryBlock));
/* init structures */
priv_data->mdb = mdb;
priv_data->bad_blocks_loaded = 0;
priv_data->bad_blocks_xtent_nb = 0;
priv_data->bad_blocks_xtent_list = NULL;
priv_data->extent_file =
hfs_file_open (fs, PED_CPU_TO_BE32 (HFS_XTENT_ID),
mdb->extents_file_rec,
PED_CPU_TO_BE32 (mdb->extents_file_size)
/ PED_SECTOR_SIZE_DEFAULT);
if (!priv_data->extent_file) goto ho_pd;
priv_data->catalog_file =
hfs_file_open (fs, PED_CPU_TO_BE32 (HFS_CATALOG_ID),
mdb->catalog_file_rec,
PED_CPU_TO_BE32 (mdb->catalog_file_size)
/ PED_SECTOR_SIZE_DEFAULT);
if (!priv_data->catalog_file) goto ho_ce;
/* Read allocation blocks */
if (!ped_geometry_read(geom, priv_data->alloc_map,
PED_BE16_TO_CPU (mdb->volume_bitmap_block),
( PED_BE16_TO_CPU (mdb->total_blocks)
+ PED_SECTOR_SIZE_DEFAULT * 8 - 1 )
/ (PED_SECTOR_SIZE_DEFAULT * 8) ) )
goto ho_cf;
fs->type = &hfs_type;
fs->geom = ped_geometry_duplicate (geom);
if (!fs->geom) goto ho_cf;
fs->type_specific = (void*) priv_data;
fs->checked = ( PED_BE16_TO_CPU (mdb->volume_attributes)
>> HFS_UNMOUNTED ) & 1;
return fs;
/*--- clean error handling ---*/
ho_cf: hfs_file_close(priv_data->catalog_file);
ho_ce: hfs_file_close(priv_data->extent_file);
ho_pd: ped_free(priv_data);
ho_mdb: ped_free(mdb);
ho_fs: ped_free(fs);
ho: return NULL;
}
static int
hfs_close (PedFileSystem *fs)
{
HfsPrivateFSData* priv_data = (HfsPrivateFSData*) fs->type_specific;
hfs_file_close (priv_data->extent_file);
hfs_file_close (priv_data->catalog_file);
if (priv_data->bad_blocks_loaded)
hfs_free_bad_blocks_list (priv_data->bad_blocks_xtent_list);
ped_free (priv_data->mdb);
ped_free (priv_data);
ped_geometry_destroy (fs->geom);
ped_free (fs);
return 1;
}
static PedConstraint*
hfs_get_resize_constraint (const PedFileSystem *fs)
{
PedDevice* dev = fs->geom->dev;
PedAlignment start_align;
PedGeometry start_sector;
PedGeometry full_dev;
PedSector min_size;
if (!ped_alignment_init (&start_align, fs->geom->start, 0))
return NULL;
if (!ped_geometry_init (&start_sector, dev, fs->geom->start, 1))
return NULL;
if (!ped_geometry_init (&full_dev, dev, 0, dev->length - 1))
return NULL;
/* 2 = last two sectors (alternate MDB and unused sector) */
min_size = hfs_get_empty_end(fs) + 2;
if (min_size == 2) return NULL;
return ped_constraint_new (&start_align, ped_alignment_any,
&start_sector, &full_dev, min_size,
fs->geom->length);
}
static int
hfs_resize (PedFileSystem* fs, PedGeometry* geom, PedTimer* timer)
{
uint8_t buf[PED_SECTOR_SIZE_DEFAULT];
unsigned int nblock, nfree;
unsigned int block, to_free;
HfsPrivateFSData* priv_data;
HfsMasterDirectoryBlock* mdb;
int resize = 1;
unsigned int hfs_sect_block;
PedSector hgee;
/* check preconditions */
PED_ASSERT (fs != NULL, return 0);
PED_ASSERT (fs->geom != NULL, return 0);
PED_ASSERT (geom != NULL, return 0);
#ifdef DEBUG
PED_ASSERT ((hgee = hfs_get_empty_end(fs)) != 0, return 0);
#else
if ((hgee = hfs_get_empty_end(fs)) == 0)
return 0;
#endif
PED_ASSERT ((hgee = hfs_get_empty_end(fs)) != 0, return 0);
if (ped_geometry_test_equal(fs->geom, geom))
return 1;
priv_data = (HfsPrivateFSData*) fs->type_specific;
mdb = priv_data->mdb;
hfs_sect_block = PED_BE32_TO_CPU (mdb->block_size)
/ PED_SECTOR_SIZE_DEFAULT;
if (fs->geom->start != geom->start
|| geom->length > fs->geom->length
|| geom->length < hgee + 2) {
ped_exception_throw (
PED_EXCEPTION_NO_FEATURE,
PED_EXCEPTION_CANCEL,
_("Sorry, HFS cannot be resized that way yet."));
return 0;
}
/* Flush caches */
if (!ped_geometry_sync(fs->geom))
return 0;
/* Clear the unmounted bit */
mdb->volume_attributes &= PED_CPU_TO_BE16 (~( 1 << HFS_UNMOUNTED ));
if (!ped_geometry_read (fs->geom, buf, 2, 1))
return 0;
memcpy (buf, mdb, sizeof (HfsMasterDirectoryBlock));
if ( !ped_geometry_write (fs->geom, buf, 2, 1)
|| !ped_geometry_sync (fs->geom))
return 0;
ped_timer_reset (timer);
ped_timer_set_state_name(timer, _("shrinking"));
ped_timer_update(timer, 0.0);
/* relocate data */
to_free = ( fs->geom->length - geom->length
+ hfs_sect_block - 1 )
/ hfs_sect_block ;
block = hfs_find_start_pack (fs, to_free);
if (!hfs_pack_free_space_from_block (fs, block, timer, to_free)) {
resize = 0;
ped_exception_throw (
PED_EXCEPTION_ERROR,
PED_EXCEPTION_CANCEL,
_("Data relocation has failed."));
goto write_MDB;
}
/* Calculate new block number and other MDB field */
nblock = ( geom->length - (PED_BE16_TO_CPU (mdb->start_block) + 2) )
/ hfs_sect_block;
nfree = PED_BE16_TO_CPU (mdb->free_blocks)
- ( PED_BE16_TO_CPU (mdb->total_blocks) - nblock );
/* Check that all block after future end are really free */
for (block = nblock;
block < PED_BE16_TO_CPU (mdb->total_blocks);
block++) {
if (TST_BLOC_OCCUPATION(priv_data->alloc_map,block)) {
resize = 0;
ped_exception_throw (
PED_EXCEPTION_ERROR,
PED_EXCEPTION_CANCEL,
_("Data relocation left some data in the end "
"of the volume."));
goto write_MDB;
}
}
/* Mark out of volume blocks as used
(broken implementations compatibility) */
for ( block = nblock; block < (1 << 16); ++block)
SET_BLOC_OCCUPATION(priv_data->alloc_map,block);
/* save the allocation map
I do not write until start of allocation blocks
but only until pre-resize end of bitmap blocks
because the specifications do _not_ assert that everything
until allocation blocks is boot, mdb and alloc */
ped_geometry_write(fs->geom, priv_data->alloc_map,
PED_BE16_TO_CPU (priv_data->mdb->volume_bitmap_block),
( PED_BE16_TO_CPU (priv_data->mdb->total_blocks)
+ PED_SECTOR_SIZE_DEFAULT * 8 - 1)
/ (PED_SECTOR_SIZE_DEFAULT * 8));
/* Update geometry */
if (resize) {
/* update in fs structure */
if (PED_BE16_TO_CPU (mdb->next_allocation) >= nblock)
mdb->next_allocation = PED_CPU_TO_BE16 (0);
mdb->total_blocks = PED_CPU_TO_BE16 (nblock);
mdb->free_blocks = PED_CPU_TO_BE16 (nfree);
/* update parted structure */
fs->geom->length = geom->length;
fs->geom->end = fs->geom->start + geom->length - 1;
}
/* Set the unmounted bit */
mdb->volume_attributes |= PED_CPU_TO_BE16 ( 1 << HFS_UNMOUNTED );
/* Effective write */
write_MDB:
ped_timer_set_state_name(timer,_("writing HFS Master Directory Block"));
if (!hfs_update_mdb(fs)) {
ped_geometry_sync(geom);
return 0;
}
if (!ped_geometry_sync(geom))
return 0;
ped_timer_update(timer, 1.0);
return (resize);
}
/* ----- HFS+ ----- */
#include "file_plus.h"
#include "advfs_plus.h"
#include "reloc_plus.h"
#include "journal.h"
static int
hfsplus_clobber (PedGeometry* geom)
{
unsigned int i = 1;
uint8_t buf[PED_SECTOR_SIZE_DEFAULT];
HfsMasterDirectoryBlock *mdb;
mdb = (HfsMasterDirectoryBlock *) buf;
if (!ped_geometry_read (geom, buf, 2, 1))
return 0;
if (PED_BE16_TO_CPU (mdb->signature) == HFS_SIGNATURE) {
/* embedded hfs+ */
PedGeometry *embedded;
i = PED_BE32_TO_CPU(mdb->block_size) / PED_SECTOR_SIZE_DEFAULT;
embedded = ped_geometry_new (
geom->dev,
(PedSector) geom->start
+ PED_BE16_TO_CPU (mdb->start_block)
+ (PedSector) PED_BE16_TO_CPU (
mdb->old_new.embedded.location.start_block ) * i,
(PedSector) PED_BE16_TO_CPU (
mdb->old_new.embedded.location.block_count ) * i );
if (!embedded) i = 0;
else {
i = hfs_clobber (embedded);
ped_geometry_destroy (embedded);
}
}
/* non-embedded or envelop destroy as hfs */
return ( hfs_clobber (geom) && i );
}
static int
hfsplus_close (PedFileSystem *fs)
{
HfsPPrivateFSData* priv_data = (HfsPPrivateFSData*)
fs->type_specific;
if (priv_data->bad_blocks_loaded)
hfsplus_free_bad_blocks_list(priv_data->bad_blocks_xtent_list);
ped_free(priv_data->alloc_map);
ped_free(priv_data->dirty_alloc_map);
hfsplus_file_close (priv_data->allocation_file);
hfsplus_file_close (priv_data->attributes_file);
hfsplus_file_close (priv_data->catalog_file);
hfsplus_file_close (priv_data->extents_file);
if (priv_data->free_geom) ped_geometry_destroy (priv_data->plus_geom);
if (priv_data->wrapper) hfs_close(priv_data->wrapper);
ped_geometry_destroy (fs->geom);
ped_free(priv_data->vh);
ped_free(priv_data);
ped_free(fs);
return 1;
}
static PedFileSystem*
hfsplus_open (PedGeometry* geom)
{
uint8_t buf[PED_SECTOR_SIZE_DEFAULT];
PedFileSystem* fs;
HfsPVolumeHeader* vh;
HfsPPrivateFSData* priv_data;
PedGeometry* wrapper_geom;
unsigned int map_sectors;
if (!hfsc_can_use_geom (geom))
return NULL;
fs = (PedFileSystem*) ped_malloc (sizeof (PedFileSystem));
if (!fs) goto hpo;
vh = (HfsPVolumeHeader*) ped_malloc (sizeof (HfsPVolumeHeader));
if (!vh) goto hpo_fs;
priv_data = (HfsPPrivateFSData*)ped_malloc (sizeof (HfsPPrivateFSData));
if (!priv_data) goto hpo_vh;
fs->geom = ped_geometry_duplicate (geom);
if (!fs->geom) goto hpo_pd;
fs->type_specific = (void*) priv_data;
if ((wrapper_geom = hfs_and_wrapper_probe (geom))) {
HfsPrivateFSData* hfs_priv_data;
PedSector abs_sect, length;
unsigned int bs;
ped_geometry_destroy (wrapper_geom);
priv_data->wrapper = hfs_open(geom);
if (!priv_data->wrapper) goto hpo_gm;
hfs_priv_data = (HfsPrivateFSData*)
priv_data->wrapper->type_specific;
bs = PED_BE32_TO_CPU (hfs_priv_data->mdb->block_size)
/ PED_SECTOR_SIZE_DEFAULT;
abs_sect = (PedSector) geom->start
+ (PedSector) PED_BE16_TO_CPU (
hfs_priv_data->mdb->start_block)
+ (PedSector) PED_BE16_TO_CPU (
hfs_priv_data->mdb->old_new
.embedded.location.start_block )
* bs;
length = (PedSector) PED_BE16_TO_CPU (
hfs_priv_data->mdb->old_new
.embedded.location.block_count)
* bs;
priv_data->plus_geom = ped_geometry_new (geom->dev, abs_sect,
length);
if (!priv_data->plus_geom) goto hpo_wr;
priv_data->free_geom = 1;
} else {
priv_data->wrapper = NULL;
priv_data->plus_geom = fs->geom;
priv_data->free_geom = 0;
}
if (!ped_geometry_read (priv_data->plus_geom, buf, 2, 1)) goto hpo_pg;
memcpy (vh, buf, sizeof (HfsPVolumeHeader));
priv_data->vh = vh;
if (vh->signature != PED_CPU_TO_BE16(HFSP_SIGNATURE)
&& vh->signature != PED_CPU_TO_BE16(HFSX_SIGNATURE)) {
ped_exception_throw (
PED_EXCEPTION_BUG,
PED_EXCEPTION_CANCEL,
_("No valid HFS[+X] signature has been found while "
"opening."));
goto hpo_pg;
}
if (vh->signature == PED_CPU_TO_BE16(HFSP_SIGNATURE)
&& vh->version != PED_CPU_TO_BE16(HFSP_VERSION)) {
if (ped_exception_throw (
PED_EXCEPTION_NO_FEATURE,
PED_EXCEPTION_IGNORE_CANCEL,
_("Version %d of HFS+ isn't supported."),
PED_BE16_TO_CPU(vh->version))
!= PED_EXCEPTION_IGNORE)
goto hpo_pg;
}
if (vh->signature == PED_CPU_TO_BE16(HFSX_SIGNATURE)
&& vh->version != PED_CPU_TO_BE16(HFSX_VERSION)) {
if (ped_exception_throw (
PED_EXCEPTION_NO_FEATURE,
PED_EXCEPTION_IGNORE_CANCEL,
_("Version %d of HFSX isn't supported."),
PED_BE16_TO_CPU(vh->version))
!= PED_EXCEPTION_IGNORE)
goto hpo_pg;
}
priv_data->jib_start_block = 0;
priv_data->jl_start_block = 0;
if (vh->attributes & PED_CPU_TO_BE32(1<<HFSP_JOURNALED)) {
if (!hfsj_replay_journal(fs))
goto hpo_pg;
}
priv_data->bad_blocks_loaded = 0;
priv_data->bad_blocks_xtent_nb = 0;
priv_data->bad_blocks_xtent_list = NULL;
priv_data->extents_file =
hfsplus_file_open (fs, PED_CPU_TO_BE32 (HFS_XTENT_ID),
vh->extents_file.extents,
PED_BE64_TO_CPU (
vh->extents_file.logical_size )
/ PED_SECTOR_SIZE_DEFAULT);
if (!priv_data->extents_file) goto hpo_pg;
priv_data->catalog_file =
hfsplus_file_open (fs, PED_CPU_TO_BE32 (HFS_CATALOG_ID),
vh->catalog_file.extents,
PED_BE64_TO_CPU (
vh->catalog_file.logical_size )
/ PED_SECTOR_SIZE_DEFAULT);
if (!priv_data->catalog_file) goto hpo_ce;
priv_data->attributes_file =
hfsplus_file_open (fs, PED_CPU_TO_BE32 (HFSP_ATTRIB_ID),
vh->attributes_file.extents,
PED_BE64_TO_CPU (
vh->attributes_file.logical_size)
/ PED_SECTOR_SIZE_DEFAULT);
if (!priv_data->attributes_file) goto hpo_cc;
map_sectors = ( PED_BE32_TO_CPU (vh->total_blocks)
+ PED_SECTOR_SIZE_DEFAULT * 8 - 1 )
/ (PED_SECTOR_SIZE_DEFAULT * 8);
priv_data->dirty_alloc_map = (uint8_t*)
ped_malloc ((map_sectors + 7) / 8);
if (!priv_data->dirty_alloc_map) goto hpo_cl;
memset(priv_data->dirty_alloc_map, 0, (map_sectors + 7) / 8);
priv_data->alloc_map = (uint8_t*)
ped_malloc (map_sectors * PED_SECTOR_SIZE_DEFAULT);
if (!priv_data->alloc_map) goto hpo_dm;
priv_data->allocation_file =
hfsplus_file_open (fs, PED_CPU_TO_BE32 (HFSP_ALLOC_ID),
vh->allocation_file.extents,
PED_BE64_TO_CPU (
vh->allocation_file.logical_size)
/ PED_SECTOR_SIZE_DEFAULT);
if (!priv_data->allocation_file) goto hpo_am;
if (!hfsplus_file_read (priv_data->allocation_file,
priv_data->alloc_map, 0, map_sectors)) {
hfsplus_close(fs);
return NULL;
}
fs->type = &hfsplus_type;
fs->checked = ((PED_BE32_TO_CPU (vh->attributes) >> HFS_UNMOUNTED) & 1)
&& !((PED_BE32_TO_CPU (vh->attributes) >> HFSP_INCONSISTENT) & 1);
return fs;
/*--- clean error handling ---*/
hpo_am: ped_free(priv_data->alloc_map);
hpo_dm: ped_free(priv_data->dirty_alloc_map);
hpo_cl: hfsplus_file_close (priv_data->attributes_file);
hpo_cc: hfsplus_file_close (priv_data->catalog_file);
hpo_ce: hfsplus_file_close (priv_data->extents_file);
hpo_pg: if (priv_data->free_geom) ped_geometry_destroy (priv_data->plus_geom);
hpo_wr: if (priv_data->wrapper) hfs_close(priv_data->wrapper);
hpo_gm: ped_geometry_destroy (fs->geom);
hpo_pd: ped_free(priv_data);
hpo_vh: ped_free(vh);
hpo_fs: ped_free(fs);
hpo: return NULL;
}
static PedConstraint*
hfsplus_get_resize_constraint (const PedFileSystem *fs)
{
PedDevice* dev = fs->geom->dev;
PedAlignment start_align;
PedGeometry start_sector;
PedGeometry full_dev;
PedSector min_size;
if (!ped_alignment_init (&start_align, fs->geom->start, 0))
return NULL;
if (!ped_geometry_init (&start_sector, dev, fs->geom->start, 1))
return NULL;
if (!ped_geometry_init (&full_dev, dev, 0, dev->length - 1))
return NULL;
min_size = hfsplus_get_min_size (fs);
if (!min_size) return NULL;
return ped_constraint_new (&start_align, ped_alignment_any,
&start_sector, &full_dev, min_size,
fs->geom->length);
}
static int
hfsplus_volume_resize (PedFileSystem* fs, PedGeometry* geom, PedTimer* timer)
{
uint8_t buf[PED_SECTOR_SIZE_DEFAULT];
unsigned int nblock, nfree, mblock;
unsigned int block, to_free, old_blocks;
HfsPPrivateFSData* priv_data = (HfsPPrivateFSData*)
fs->type_specific;
HfsPVolumeHeader* vh = priv_data->vh;
int resize = 1;
unsigned int hfsp_sect_block =
( PED_BE32_TO_CPU (vh->block_size)
/ PED_SECTOR_SIZE_DEFAULT );
unsigned int map_sectors;
old_blocks = PED_BE32_TO_CPU (vh->total_blocks);
/* Flush caches */
if (!ped_geometry_sync(priv_data->plus_geom))
return 0;
/* Clear the unmounted bit */
/* and set the implementation code (Apple Creator Code) */
vh->attributes &= PED_CPU_TO_BE32 (~( 1 << HFS_UNMOUNTED ));
vh->last_mounted_version = PED_CPU_TO_BE32(HFSP_IMPL_Shnk);
if (!ped_geometry_read (priv_data->plus_geom, buf, 2, 1))
return 0;
memcpy (buf, vh, sizeof (HfsPVolumeHeader));
if ( !ped_geometry_write (priv_data->plus_geom, buf, 2, 1)
|| !ped_geometry_sync (priv_data->plus_geom))
return 0;
ped_timer_reset (timer);
ped_timer_set_state_name(timer, _("shrinking"));
ped_timer_update(timer, 0.0);
/* relocate data */
to_free = ( priv_data->plus_geom->length
- geom->length + hfsp_sect_block
- 1 ) / hfsp_sect_block;
block = hfsplus_find_start_pack (fs, to_free);
if (!hfsplus_pack_free_space_from_block (fs, block, timer, to_free)) {
resize = 0;
ped_exception_throw (
PED_EXCEPTION_ERROR,
PED_EXCEPTION_CANCEL,
_("Data relocation has failed."));
goto write_VH;
}
/* Calculate new block number and other VH field */
/* nblock must be rounded _down_ */
nblock = geom->length / hfsp_sect_block;
nfree = PED_BE32_TO_CPU (vh->free_blocks)
- (old_blocks - nblock);
/* free block readjustement is only needed when incorrect nblock
was used by my previous implementation, so detect the case */
if (priv_data->plus_geom->length < old_blocks
* ( PED_BE32_TO_CPU (vh->block_size)
/ PED_SECTOR_SIZE_DEFAULT) ) {
if (priv_data->plus_geom->length % hfsp_sect_block == 1)
nfree++;
}
/* Check that all block after future end are really free */
mblock = ( priv_data->plus_geom->length - 2 )
/ hfsp_sect_block;
if (mblock > old_blocks - 1)
mblock = old_blocks - 1;
for ( block = nblock;
block < mblock;
block++ ) {
if (TST_BLOC_OCCUPATION(priv_data->alloc_map,block)) {
resize = 0;
ped_exception_throw (
PED_EXCEPTION_ERROR,
PED_EXCEPTION_CANCEL,
_("Data relocation left some data at the end "
"of the volume."));
goto write_VH;
}
}
/* Mark out of volume blocks as used */
map_sectors = ( ( old_blocks + PED_SECTOR_SIZE_DEFAULT * 8 - 1 )
/ (PED_SECTOR_SIZE_DEFAULT * 8) )
* (PED_SECTOR_SIZE_DEFAULT * 8);
for ( block = nblock; block < map_sectors; ++block)
SET_BLOC_OCCUPATION(priv_data->alloc_map, block);
/* Update geometry */
if (resize) {
/* update in fs structure */
if (PED_BE32_TO_CPU (vh->next_allocation) >= nblock)
vh->next_allocation = PED_CPU_TO_BE32 (0);
vh->total_blocks = PED_CPU_TO_BE32 (nblock);
vh->free_blocks = PED_CPU_TO_BE32 (nfree);
/* update parted structure */
priv_data->plus_geom->length = geom->length;
priv_data->plus_geom->end = priv_data->plus_geom->start
+ geom->length - 1;
}
/* Effective write */
write_VH:
/* lasts two sectors are allocated by the alternate VH
and a reserved sector, and last block is always reserved */
block = (priv_data->plus_geom->length - 1) / hfsp_sect_block;
if (block < PED_BE32_TO_CPU (vh->total_blocks))
SET_BLOC_OCCUPATION(priv_data->alloc_map, block);
block = (priv_data->plus_geom->length - 2) / hfsp_sect_block;
if (block < PED_BE32_TO_CPU (vh->total_blocks))
SET_BLOC_OCCUPATION(priv_data->alloc_map, block);
SET_BLOC_OCCUPATION(priv_data->alloc_map,
PED_BE32_TO_CPU (vh->total_blocks) - 1);
/* Write the _old_ area to set out of volume blocks as used */
map_sectors = ( old_blocks + PED_SECTOR_SIZE_DEFAULT * 8 - 1 )
/ (PED_SECTOR_SIZE_DEFAULT * 8);
if (!hfsplus_file_write (priv_data->allocation_file,
priv_data->alloc_map, 0, map_sectors)) {
resize = 0;
ped_exception_throw (
PED_EXCEPTION_ERROR,
PED_EXCEPTION_CANCEL,
_("Error while writing the allocation file."));
} else {
/* Write remaining part of allocation bitmap */
/* This is necessary to handle pre patch-11 and third party */
/* implementations */
memset(buf, 0xFF, PED_SECTOR_SIZE_DEFAULT);
for (block = map_sectors;
block < priv_data->allocation_file->sect_nb;
++block) {
if (!hfsplus_file_write_sector (
priv_data->allocation_file,
buf, block)) {
ped_exception_throw (
PED_EXCEPTION_WARNING,
PED_EXCEPTION_IGNORE,
_("Error while writing the "
"compatibility part of the "
"allocation file."));
break;
}
}
}
ped_geometry_sync (priv_data->plus_geom);
if (resize) {
/* Set the unmounted bit and clear the inconsistent bit */
vh->attributes |= PED_CPU_TO_BE32 ( 1 << HFS_UNMOUNTED );
vh->attributes &= ~ PED_CPU_TO_BE32 ( 1 << HFSP_INCONSISTENT );
}
ped_timer_set_state_name(timer, _("writing HFS+ Volume Header"));
if (!hfsplus_update_vh(fs)) {
ped_geometry_sync(priv_data->plus_geom);
return 0;
}
if (!ped_geometry_sync(priv_data->plus_geom))
return 0;
ped_timer_update(timer, 1.0);
return (resize);
}
/* Update the HFS wrapper mdb and bad blocks file to reflect
the new geometry of the embedded HFS+ volume */
static int
hfsplus_wrapper_update (PedFileSystem* fs)
{
uint8_t node[PED_SECTOR_SIZE_DEFAULT];
HfsCPrivateLeafRec ref;
HfsExtentKey key;
HfsNodeDescriptor* node_desc = (HfsNodeDescriptor*) node;
HfsExtentKey* ret_key;
HfsExtDescriptor* ret_data;
unsigned int i;
HfsPPrivateFSData* priv_data = (HfsPPrivateFSData*)
fs->type_specific;
HfsPrivateFSData* hfs_priv_data = (HfsPrivateFSData*)
priv_data->wrapper->type_specific;
unsigned int hfs_sect_block =
PED_BE32_TO_CPU (hfs_priv_data->mdb->block_size)
/ PED_SECTOR_SIZE_DEFAULT ;
PedSector hfsplus_sect = (PedSector)
PED_BE32_TO_CPU (priv_data->vh->total_blocks)
* ( PED_BE32_TO_CPU (priv_data->vh->block_size)
/ PED_SECTOR_SIZE_DEFAULT );
unsigned int hfs_blocks_embedded =
(hfsplus_sect + hfs_sect_block - 1)
/ hfs_sect_block;
unsigned int hfs_blocks_embedded_old;
/* update HFS wrapper MDB */
hfs_blocks_embedded_old = PED_BE16_TO_CPU (
hfs_priv_data->mdb->old_new
.embedded.location.block_count );
hfs_priv_data->mdb->old_new.embedded.location.block_count =
PED_CPU_TO_BE16 (hfs_blocks_embedded);
/* maybe macOS will boot with this */
/* update : yes it does \o/ :) */
hfs_priv_data->mdb->free_blocks =
PED_CPU_TO_BE16 ( PED_BE16_TO_CPU (hfs_priv_data->mdb->free_blocks)
+ hfs_blocks_embedded_old
- hfs_blocks_embedded );
if (!hfs_update_mdb(priv_data->wrapper))
return 0;
/* force reload bad block list */
if (hfs_priv_data->bad_blocks_loaded) {
hfs_free_bad_blocks_list (hfs_priv_data->bad_blocks_xtent_list);
hfs_priv_data->bad_blocks_xtent_list = NULL;
hfs_priv_data->bad_blocks_xtent_nb = 0;
hfs_priv_data->bad_blocks_loaded = 0;
}
/* clean HFS wrapper allocation map */
for (i = PED_BE16_TO_CPU (
hfs_priv_data->mdb->old_new.embedded
.location.start_block )
+ hfs_blocks_embedded;
i < PED_BE16_TO_CPU (
hfs_priv_data->mdb->old_new.embedded
.location.start_block )
+ hfs_blocks_embedded_old;
i++ ) {
CLR_BLOC_OCCUPATION(hfs_priv_data->alloc_map, i);
}
/* and save it */
if (!ped_geometry_write (fs->geom, hfs_priv_data->alloc_map,
PED_BE16_TO_CPU (
hfs_priv_data->mdb->volume_bitmap_block ),
( PED_BE16_TO_CPU (
hfs_priv_data->mdb->total_blocks )
+ PED_SECTOR_SIZE_DEFAULT * 8 - 1 )
/ (PED_SECTOR_SIZE_DEFAULT * 8)))
return 0;
if (!ped_geometry_sync (fs->geom))
return 0;
/* search and update the bad blocks file */
key.key_length = sizeof(key) - 1;
key.type = HFS_DATA_FORK;
key.file_ID = PED_CPU_TO_BE32 (HFS_BAD_BLOCK_ID);
key.start = 0;
if (!hfs_btree_search (hfs_priv_data->extent_file,
(HfsPrivateGenericKey*) &key, NULL, 0, &ref)) {
ped_exception_throw (
PED_EXCEPTION_ERROR,
PED_EXCEPTION_CANCEL,
_("An error occurred while looking for the mandatory "
"bad blocks file."));
return 0;
}
if (!hfs_file_read_sector (hfs_priv_data->extent_file, node,
ref.node_number))
return 0;
ret_key = (HfsExtentKey*) (node + ref.record_pos);
ret_data = (HfsExtDescriptor*) ( node + ref.record_pos
+ sizeof (HfsExtentKey) );
while (ret_key->type == key.type && ret_key->file_ID == key.file_ID) {
for (i = 0; i < HFS_EXT_NB; i++) {
if ( ret_data[i].start_block
== hfs_priv_data->mdb->old_new
.embedded.location.start_block) {
ret_data[i].block_count =
hfs_priv_data->mdb->old_new
.embedded.location.block_count;
/* found ! : update */
if (!hfs_file_write_sector (
hfs_priv_data->extent_file,
node, ref.node_number)
|| !ped_geometry_sync(fs->geom))
return 0;
return 1;
}
}
if (ref.record_number < PED_BE16_TO_CPU (node_desc->rec_nb)) {
ref.record_number++;
} else {
ref.node_number = PED_BE32_TO_CPU (node_desc->next);
if (!ref.node_number
|| !hfs_file_read_sector(hfs_priv_data->extent_file,
node, ref.node_number))
goto bb_not_found;
ref.record_number = 1;
}
ref.record_pos =
PED_BE16_TO_CPU (*((uint16_t *)
(node + (PED_SECTOR_SIZE_DEFAULT
- 2*ref.record_number))));
ret_key = (HfsExtentKey*) (node + ref.record_pos);
ret_data = (HfsExtDescriptor*) ( node + ref.record_pos
+ sizeof (HfsExtentKey) );
}
bb_not_found:
/* not found : not a valid hfs+ wrapper : failure */
ped_exception_throw (
PED_EXCEPTION_ERROR,
PED_EXCEPTION_CANCEL,
_("It seems there is an error in the HFS wrapper: the bad "
"blocks file doesn't contain the embedded HFS+ volume."));
return 0;
}
static int
hfsplus_resize (PedFileSystem* fs, PedGeometry* geom, PedTimer* timer)
{
HfsPPrivateFSData* priv_data;
PedTimer* timer_plus;
PedGeometry* embedded_geom;
PedSector hgms;
/* check preconditions */
PED_ASSERT (fs != NULL, return 0);
PED_ASSERT (fs->geom != NULL, return 0);
PED_ASSERT (geom != NULL, return 0);
PED_ASSERT (fs->geom->dev == geom->dev, return 0);
#ifdef DEBUG
PED_ASSERT ((hgms = hfsplus_get_min_size (fs)) != 0, return 0);
#else
if ((hgms = hfsplus_get_min_size (fs)) == 0)
return 0;
#endif
if (ped_geometry_test_equal(fs->geom, geom))
return 1;
priv_data = (HfsPPrivateFSData*) fs->type_specific;
if (fs->geom->start != geom->start
|| geom->length > fs->geom->length
|| geom->length < hgms) {
ped_exception_throw (
PED_EXCEPTION_NO_FEATURE,
PED_EXCEPTION_CANCEL,
_("Sorry, HFS+ cannot be resized that way yet."));
return 0;
}
if (priv_data->wrapper) {
PedSector red, hgee;
HfsPrivateFSData* hfs_priv_data = (HfsPrivateFSData*)
priv_data->wrapper->type_specific;
unsigned int hfs_sect_block =
PED_BE32_TO_CPU (hfs_priv_data->mdb->block_size)
/ PED_SECTOR_SIZE_DEFAULT;
/* There is a wrapper so we must calculate the new geometry
of the embedded HFS+ volume */
red = ( (fs->geom->length - geom->length + hfs_sect_block - 1)
/ hfs_sect_block ) * hfs_sect_block;
/* Can't we shrink the hfs+ volume by the desired size ? */
hgee = hfsplus_get_empty_end (fs);
if (!hgee) return 0;
if (red > priv_data->plus_geom->length - hgee) {
/* No, shrink hfs+ by the greatest possible value */
hgee = ((hgee + hfs_sect_block - 1) / hfs_sect_block)
* hfs_sect_block;
red = priv_data->plus_geom->length - hgee;
}
embedded_geom = ped_geometry_new (geom->dev,
priv_data->plus_geom->start,
priv_data->plus_geom->length
- red);
/* There is a wrapper so the resize process is a two stages
process (embedded resizing then wrapper resizing) :
we create a sub timer */
ped_timer_reset (timer);
ped_timer_set_state_name (timer,
_("shrinking embedded HFS+ volume"));
ped_timer_update(timer, 0.0);
timer_plus = ped_timer_new_nested (timer, 0.98);
} else {
/* No wrapper : the desired geometry is the desired
HFS+ volume geometry */
embedded_geom = geom;
timer_plus = timer;
}
/* Resize the HFS+ volume */
if (!hfsplus_volume_resize (fs, embedded_geom, timer_plus)) {
if (timer_plus != timer) ped_timer_destroy_nested (timer_plus);
ped_exception_throw (
PED_EXCEPTION_ERROR,
PED_EXCEPTION_CANCEL,
_("Resizing the HFS+ volume has failed."));
return 0;
}
if (priv_data->wrapper) {
ped_geometry_destroy (embedded_geom);
ped_timer_destroy_nested (timer_plus);
ped_timer_set_state_name(timer, _("shrinking HFS wrapper"));
timer_plus = ped_timer_new_nested (timer, 0.02);
/* There's a wrapper : second stage = resizing it */
if (!hfsplus_wrapper_update (fs)
|| !hfs_resize (priv_data->wrapper, geom, timer_plus)) {
ped_timer_destroy_nested (timer_plus);
ped_exception_throw (
PED_EXCEPTION_ERROR,
PED_EXCEPTION_CANCEL,
_("Updating the HFS wrapper has failed."));
return 0;
}
ped_timer_destroy_nested (timer_plus);
}
ped_timer_update(timer, 1.0);
return 1;
}
#ifdef HFS_EXTRACT_FS
/* The following is for debugging purpose only, NOT for packaging */
#include <stdio.h>
uint8_t* extract_buffer = NULL;
static int
hfs_extract_file(const char* filename, HfsPrivateFile* hfs_file)
{
FILE* fout;
PedSector sect;
fout = fopen(filename, "w");
if (!fout) return 0;
for (sect = 0; sect < hfs_file->sect_nb; ++sect) {
if (!hfs_file_read_sector(hfs_file, extract_buffer, sect))
goto err_close;
if (!fwrite(extract_buffer, PED_SECTOR_SIZE_DEFAULT, 1, fout))
goto err_close;
}
return (fclose(fout) == 0 ? 1 : 0);
err_close:
fclose(fout);
return 0;
}
static int
hfs_extract_bitmap(const char* filename, PedFileSystem* fs)
{
HfsPrivateFSData* priv_data = (HfsPrivateFSData*)
fs->type_specific;
HfsMasterDirectoryBlock* mdb = priv_data->mdb;
unsigned int count;
FILE* fout;
PedSector sect;
fout = fopen(filename, "w");
if (!fout) return 0;
for (sect = PED_BE16_TO_CPU(mdb->volume_bitmap_block);
sect < PED_BE16_TO_CPU(mdb->start_block);
sect += count) {
uint16_t st_block = PED_BE16_TO_CPU(mdb->start_block);
count = (st_block-sect) < BLOCK_MAX_BUFF ?
(st_block-sect) : BLOCK_MAX_BUFF;
if (!ped_geometry_read(fs->geom, extract_buffer, sect, count))
goto err_close;
if (!fwrite (extract_buffer, count * PED_SECTOR_SIZE_DEFAULT,
1, fout))
goto err_close;
}
return (fclose(fout) == 0 ? 1 : 0);
err_close:
fclose(fout);
return 0;
}
static int
hfs_extract_mdb (const char* filename, PedFileSystem* fs)
{
FILE* fout;
fout = fopen(filename, "w");
if (!fout) return 0;
if (!ped_geometry_read(fs->geom, extract_buffer, 2, 1))
goto err_close;
if (!fwrite(extract_buffer, PED_SECTOR_SIZE_DEFAULT, 1, fout))
goto err_close;
return (fclose(fout) == 0 ? 1 : 0);
err_close:
fclose(fout);
return 0;
}
static int
hfs_extract (PedFileSystem* fs, PedTimer* timer)
{
HfsPrivateFSData* priv_data = (HfsPrivateFSData*)
fs->type_specific;
ped_exception_throw (
PED_EXCEPTION_INFORMATION,
PED_EXCEPTION_OK,
_("This is not a real %s check. This is going to extract "
"special low level files for debugging purposes."),
"HFS");
extract_buffer = ped_malloc(BLOCK_MAX_BUFF * PED_SECTOR_SIZE_DEFAULT);
if (!extract_buffer) return 0;
hfs_extract_mdb(HFS_MDB_FILENAME, fs);
hfs_extract_file(HFS_CATALOG_FILENAME, priv_data->catalog_file);
hfs_extract_file(HFS_EXTENTS_FILENAME, priv_data->extent_file);
hfs_extract_bitmap(HFS_BITMAP_FILENAME, fs);
ped_free(extract_buffer); extract_buffer = NULL;
return 0; /* nothing has been fixed by us ! */
}
static int
hfsplus_extract_file(const char* filename, HfsPPrivateFile* hfsp_file)
{
FILE* fout;
unsigned int cp_sect;
PedSector rem_sect;
fout = fopen(filename, "w");
if (!fout) return 0;
for (rem_sect = hfsp_file->sect_nb; rem_sect; rem_sect -= cp_sect) {
cp_sect = rem_sect < BLOCK_MAX_BUFF ? rem_sect : BLOCK_MAX_BUFF;
if (!hfsplus_file_read(hfsp_file, extract_buffer,
hfsp_file->sect_nb - rem_sect, cp_sect))
goto err_close;
if (!fwrite (extract_buffer, cp_sect * PED_SECTOR_SIZE_DEFAULT,
1, fout))
goto err_close;
}
return (fclose(fout) == 0 ? 1 : 0);
err_close:
fclose(fout);
return 0;
}
static int
hfsplus_extract_vh (const char* filename, PedFileSystem* fs)
{
HfsPPrivateFSData* priv_data = (HfsPPrivateFSData*)
fs->type_specific;
FILE* fout;
PedGeometry* geom = priv_data->plus_geom;
fout = fopen(filename, "w");
if (!fout) return 0;
if (!ped_geometry_read(geom, extract_buffer, 2, 1))
goto err_close;
if (!fwrite(extract_buffer, PED_SECTOR_SIZE_DEFAULT, 1, fout))
goto err_close;
return (fclose(fout) == 0 ? 1 : 0);
err_close:
fclose(fout);
return 0;
}
/* TODO : use the timer to report what is happening */
/* TODO : use exceptions to report errors */
static int
hfsplus_extract (PedFileSystem* fs, PedTimer* timer)
{
HfsPPrivateFSData* priv_data = (HfsPPrivateFSData*)
fs->type_specific;
HfsPVolumeHeader* vh = priv_data->vh;
HfsPPrivateFile* startup_file;
if (priv_data->wrapper) {
/* TODO : create nested timer */
hfs_extract (priv_data->wrapper, timer);
}
ped_exception_throw (
PED_EXCEPTION_INFORMATION,
PED_EXCEPTION_OK,
_("This is not a real %s check. This is going to extract "
"special low level files for debugging purposes."),
"HFS+");
extract_buffer = ped_malloc(BLOCK_MAX_BUFF * PED_SECTOR_SIZE_DEFAULT);
if (!extract_buffer) return 0;
hfsplus_extract_vh(HFSP_VH_FILENAME, fs);
hfsplus_extract_file(HFSP_CATALOG_FILENAME, priv_data->catalog_file);
hfsplus_extract_file(HFSP_EXTENTS_FILENAME, priv_data->extents_file);
hfsplus_extract_file(HFSP_ATTRIB_FILENAME, priv_data->attributes_file);
hfsplus_extract_file(HFSP_BITMAP_FILENAME, priv_data->allocation_file);
startup_file = hfsplus_file_open(fs, PED_CPU_TO_BE32(HFSP_STARTUP_ID),
vh->startup_file.extents,
PED_BE64_TO_CPU (
vh->startup_file.logical_size)
/ PED_SECTOR_SIZE_DEFAULT);
if (startup_file) {
hfsplus_extract_file(HFSP_STARTUP_FILENAME, startup_file);
hfsplus_file_close(startup_file); startup_file = NULL;
}
ped_free(extract_buffer); extract_buffer = NULL;
return 0; /* nothing has been fixed by us ! */
}
#endif /* HFS_EXTRACT_FS */
#endif /* !DISCOVER_ONLY */
static PedFileSystemOps hfs_ops = {
probe: hfs_probe,
#ifndef DISCOVER_ONLY
clobber: hfs_clobber,
open: hfs_open,
create: NULL,
close: hfs_close,
#ifndef HFS_EXTRACT_FS
check: NULL,
#else
check: hfs_extract,
#endif
copy: NULL,
resize: hfs_resize,
get_create_constraint: NULL,
get_resize_constraint: hfs_get_resize_constraint,
get_copy_constraint: NULL,
#else /* DISCOVER_ONLY */
clobber: NULL,
open: NULL,
create: NULL,
close: NULL,
check: NULL,
copy: NULL,
resize: NULL,
get_create_constraint: NULL,
get_resize_constraint: NULL,
get_copy_constraint: NULL,
#endif /* DISCOVER_ONLY */
};
static PedFileSystemOps hfsplus_ops = {
probe: hfsplus_probe,
#ifndef DISCOVER_ONLY
clobber: hfsplus_clobber,
open: hfsplus_open,
create: NULL,
close: hfsplus_close,
#ifndef HFS_EXTRACT_FS
check: NULL,
#else
check: hfsplus_extract,
#endif
copy: NULL,
resize: hfsplus_resize,
get_create_constraint: NULL,
get_resize_constraint: hfsplus_get_resize_constraint,
get_copy_constraint: NULL,
#else /* DISCOVER_ONLY */
clobber: NULL,
open: NULL,
create: NULL,
close: NULL,
check: NULL,
copy: NULL,
resize: NULL,
get_create_constraint: NULL,
get_resize_constraint: NULL,
get_copy_constraint: NULL,
#endif /* DISCOVER_ONLY */
};
static PedFileSystemOps hfsx_ops = {
probe: hfsx_probe,
#ifndef DISCOVER_ONLY
clobber: hfs_clobber, /* NOT hfsplus_clobber !
HFSX can't be embedded */
open: hfsplus_open,
create: NULL,
close: hfsplus_close,
#ifndef HFS_EXTRACT_FS
check: NULL,
#else
check: hfsplus_extract,
#endif
copy: NULL,
resize: hfsplus_resize,
get_create_constraint: NULL,
get_resize_constraint: hfsplus_get_resize_constraint,
get_copy_constraint: NULL,
#else /* DISCOVER_ONLY */
clobber: NULL,
open: NULL,
create: NULL,
close: NULL,
check: NULL,
copy: NULL,
resize: NULL,
get_create_constraint: NULL,
get_resize_constraint: NULL,
get_copy_constraint: NULL,
#endif /* DISCOVER_ONLY */
};
static PedFileSystemType hfs_type = {
next: NULL,
ops: &hfs_ops,
name: "hfs",
block_sizes: HFS_BLOCK_SIZES
};
static PedFileSystemType hfsplus_type = {
next: NULL,
ops: &hfsplus_ops,
name: "hfs+",
block_sizes: HFSP_BLOCK_SIZES
};
static PedFileSystemType hfsx_type = {
next: NULL,
ops: &hfsx_ops,
name: "hfsx",
block_sizes: HFSX_BLOCK_SIZES
};
void
ped_file_system_hfs_init ()
{
ped_file_system_type_register (&hfs_type);
ped_file_system_type_register (&hfsplus_type);
ped_file_system_type_register (&hfsx_type);
}
void
ped_file_system_hfs_done ()
{
ped_file_system_type_unregister (&hfs_type);
ped_file_system_type_unregister (&hfsplus_type);
ped_file_system_type_unregister (&hfsx_type);
}