/* This MUST be called BEFORE the fat_construct_new_fat(), because cluster
* allocation depend on the old FAT. The reason is, old clusters may
* still be needed during the resize, (particularly clusters in the directory
* tree) even if they will be discarded later.
*/
static int
alloc_root_dir (FatOpContext* ctx)
{
FatSpecific* old_fs_info = FAT_SPECIFIC (ctx->old_fs);
FatSpecific* new_fs_info = FAT_SPECIFIC (ctx->new_fs);
FatCluster i;
FatCluster cluster;
FatCluster cluster_count;
PED_ASSERT (new_fs_info->fat_type == FAT_TYPE_FAT32);
cluster_count = ped_div_round_up (
PED_MAX (16, old_fs_info->root_dir_sector_count),
new_fs_info->cluster_sectors);
for (i = 0; i < cluster_count; i++) {
cluster = fat_table_alloc_check_cluster (new_fs_info->fat,
ctx->new_fs);
if (!cluster)
return 0;
ctx->new_root_dir [i] = cluster;
clear_cluster (ctx->new_fs, cluster);
}
ctx->new_root_dir [i] = 0;
new_fs_info->root_cluster = ctx->new_root_dir [0];
return 1;
}
/**
* If \p str contains a valid description of a location on \p dev, then
* \p *sector is modified to describe the location and a geometry is created
* in \p *range describing a 2 units large area centered on \p *sector. If the
* \p range as described here would be partially outside the device \p dev, the
* geometry returned is the intersection between the former and the whole
* device geometry. If no units are specified, then the default unit is
* assumed.
*
* \throws PED_EXCEPTION_ERROR if \p str contains invalid description of a
* location
* \throws PED_EXCEPTION_ERROR if location described by \p str
* is outside of the device \p dev->path
*
* \return \c 1 if \p str is a valid location description, \c 0 otherwise.
*/
int
ped_unit_parse_custom (const char* str, const PedDevice* dev, PedUnit unit,
PedSector* sector, PedGeometry** range)
{
char* copy;
char* suffix;
double num;
long long unit_size;
PedSector radius;
if (is_chs (str))
return parse_chs (str, dev, sector, range);
copy = ped_strdup (str);
if (!copy)
goto error;
strip_string (copy);
suffix = find_suffix (copy);
unit = parse_unit_suffix (suffix, unit);
suffix[0] = 0;
if (sscanf (copy, "%lf", &num) != 1) {
ped_exception_throw (
PED_EXCEPTION_ERROR,
PED_EXCEPTION_CANCEL,
_("Invalid number."));
goto error_free_copy;
}
if (num > 0 && num < 1) {
ped_exception_throw (
PED_EXCEPTION_ERROR, PED_EXCEPTION_CANCEL,
_("Use a smaller unit instead of a value < 1"));
goto error_free_copy;
}
unit_size = ped_unit_get_size (dev, unit);
radius = (ped_div_round_up (unit_size, dev->sector_size) / 2) - 1;
if (radius < 0)
radius = 0;
/* If the user specifies units in a power of 2, e.g., 4MiB, as in
parted -s -- $dev mklabel gpt mkpart P-NAME 4MiB -34s
do not use 4MiB as the range. Rather, presume that they
are specifying precisely the starting or ending number,
and treat "4MiB" just as we would treat "4194304B". */
if (is_power_of_2 (unit_size))
radius = 0;
*sector = num * unit_size / dev->sector_size;
/* negative numbers count from the end */
if (copy[0] == '-')
*sector += dev->length;
if (range) {
*range = geometry_from_centre_radius (dev, *sector, radius);
if (!*range) {
ped_exception_throw (
PED_EXCEPTION_ERROR, PED_EXCEPTION_CANCEL,
_("The location %s is outside of the "
"device %s."),
str, dev->path);
goto error_free_copy;
}
}
*sector = clip (dev, *sector);
free (copy);
return 1;
error_free_copy:
free (copy);
error:
*sector = 0;
if (range)
*range = NULL;
return 0;
}
int ext2_metadata_push(struct ext2_fs *fs, blk_t newsize)
{
int i;
int newgdblocks;
blk_t newitoffset;
newgdblocks = ped_div_round_up (newsize
- EXT2_SUPER_FIRST_DATA_BLOCK(fs->sb),
EXT2_SUPER_BLOCKS_PER_GROUP(fs->sb));
newgdblocks = ped_div_round_up (newgdblocks
* sizeof(struct ext2_group_desc),
fs->blocksize);
newitoffset = newgdblocks + 3;
if (newitoffset <= fs->itoffset)
return 1;
for (i=0;i<fs->numgroups;i++)
{
blk_t diff;
blk_t j;
blk_t fromblock;
blk_t start;
start = (i * EXT2_SUPER_BLOCKS_PER_GROUP(fs->sb))
+ EXT2_SUPER_FIRST_DATA_BLOCK(fs->sb);
if (EXT2_GROUP_INODE_TABLE(fs->gd[i]) >= start + newitoffset
&& EXT2_GROUP_BLOCK_BITMAP(fs->gd[i]) >= start + newitoffset - 2
&& EXT2_GROUP_INODE_BITMAP(fs->gd[i]) >= start + newitoffset - 1)
continue;
diff = newitoffset - (EXT2_GROUP_INODE_TABLE(fs->gd[i]) - start);
/* inode table */
fromblock = EXT2_GROUP_INODE_TABLE(fs->gd[i]) + fs->inodeblocks;
if (fs->opt_debug)
{
for (j=0;j<diff;j++)
if (!ext2_get_block_state(fs, fromblock+j))
{
fprintf(stderr,
"error: block relocator "
"should have relocated "
"%i\n",
fromblock);
return 0;
}
}
for (j=0;j<diff;j++)
if (!ext2_set_block_state(fs, fromblock+j, 1, 0))
return 0;
if (!ext2_move_blocks(fs,
EXT2_GROUP_INODE_TABLE(fs->gd[i]),
fs->inodeblocks,
EXT2_GROUP_INODE_TABLE(fs->gd[i]) + diff))
return 0;
fs->gd[i].bg_inode_table = PED_CPU_TO_LE32 (
EXT2_GROUP_INODE_TABLE(fs->gd[i]) + diff);
fs->metadirty |= EXT2_META_GD;
if (fs->opt_safe)
if (!ext2_sync(fs))
return 0;
/* block bitmap and inode bitmap */
fromblock = EXT2_GROUP_INODE_TABLE(fs->gd[i]);
if (ext2_is_group_sparse(fs, i))
{
if (!ext2_copy_block(fs,
EXT2_GROUP_INODE_BITMAP(fs->gd[i]),
EXT2_GROUP_INODE_BITMAP(fs->gd[i]) + diff))
return 0;
fs->gd[i].bg_inode_bitmap = PED_CPU_TO_LE32 (
EXT2_GROUP_INODE_BITMAP(fs->gd[i]) + diff);
fs->metadirty |= EXT2_META_GD;
if (fs->opt_safe)
if (!ext2_sync(fs))
return 0;
if (!ext2_copy_block(fs,
EXT2_GROUP_BLOCK_BITMAP(fs->gd[i]),
EXT2_GROUP_BLOCK_BITMAP(fs->gd[i])+diff))
return 0;
fs->gd[i].bg_block_bitmap = PED_CPU_TO_LE32 (
EXT2_GROUP_BLOCK_BITMAP(fs->gd[i]) + diff);
fs->metadirty |= EXT2_META_GD;
if (fs->opt_safe)
if (!ext2_sync(fs))
return 0;
fromblock = EXT2_GROUP_BLOCK_BITMAP(fs->gd[i]);
}
ext2_zero_blocks(fs, fromblock-diff, diff);
for (j=0;j<diff;j++)
if (!ext2_set_block_state(fs, fromblock+j-diff, 0, 0))
return 0;
if (fs->opt_verbose)
fprintf(stderr,
"ext2_metadata_push: group %i/%i\r",
i+1, fs->numgroups);
}
fs->itoffset = newitoffset;
if (fs->opt_verbose)
fputc ('\n', stderr);
return 1;
}