def blocks_create_old(self, anon_blk):
# create file header block
fhb = FileHeaderBlock(self.blkdev, anon_blk.blk_num, self.volume.is_longname)
fhb.set(anon_blk.data)
if not fhb.valid:
raise FSError(INVALID_FILE_HEADER_BLOCK, block=anon_blk)
self.set_block(fhb)
# retrieve data blocks and size from header
self.data_blk_nums = fhb.data_blocks[:]
self.data_size = fhb.byte_size
# scan for extension blocks
next_ext = self.block.extension
while next_ext != 0:
ext_blk = FileListBlock(self.block.blkdev, next_ext)
ext_blk.read()
if not ext_blk.valid:
raise FSError(INVALID_FILE_LIST_BLOCK, block=ext_blk)
self.ext_blk_nums.append(next_ext)
self.ext_blks.append(ext_blk)
self.data_blk_nums += ext_blk.data_blocks
next_ext = ext_blk.extension
# now check number of ext blocks
self.num_ext_blks = self.calc_number_of_list_blks()
my_num_ext_blks = len(self.ext_blks)
if my_num_ext_blks != self.num_ext_blks:
raise FSError(FILE_LIST_BLOCK_COUNT_MISMATCH, node=self, extra="got=%d want=%d" % (my_num_ext_blks, self.num_ext_blks))
# now check number of data blocks
self.num_data_blks = self.calc_number_of_data_blks()
my_num_data_blks = len(self.data_blk_nums)
if my_num_data_blks != self.num_data_blks:
raise FSError(FILE_DATA_BLOCK_COUNT_MISMATCH, node=self, extra="got=%d want=%d" % (my_num_data_blks, self.num_data_blks))
# calc number of total blocks occupied by this file
self.total_blks = 1 + my_num_ext_blks + my_num_data_blks
if self.block.comment_block_id != 0:
self.total_blks += 1
return fhb
def blocks_create_old(self, anon_blk):
# create file header block
fhb = FileHeaderBlock(self.blkdev, anon_blk.blk_num)
fhb.set(anon_blk.data)
if not fhb.valid:
raise FSError(INVALID_FILE_HEADER_BLOCK, block=anon_blk)
self.set_block(fhb)
# retrieve data blocks and size from header
self.data_blk_nums = fhb.data_blocks[:]
self.data_size = fhb.byte_size
# scan for extension blocks
next_ext = self.block.extension
while next_ext != 0:
ext_blk = FileListBlock(self.block.blkdev, next_ext)
ext_blk.read()
if not ext_blk.valid:
raise FSError(INVALID_FILE_LIST_BLOCK, block=ext_blk)
self.ext_blk_nums.append(next_ext)
self.ext_blks.append(ext_blk)
self.data_blk_nums += ext_blk.data_blocks
next_ext = ext_blk.extension
# now check number of ext blocks
self.num_ext_blks = self.calc_number_of_list_blks()
my_num_ext_blks = len(self.ext_blks)
if my_num_ext_blks != self.num_ext_blks:
raise FSError(FILE_LIST_BLOCK_COUNT_MISMATCH, node=self, extra="got=%d want=%d" % (my_num_ext_blks, self.num_ext_blks))
# now check number of data blocks
self.num_data_blks = self.calc_number_of_data_blks()
my_num_data_blks = len(self.data_blk_nums)
if my_num_data_blks != self.num_data_blks:
raise FSError(FILE_DATA_BLOCK_COUNT_MISMATCH, node=self, extra="got=%d want=%d" % (my_num_data_blks, self.num_data_blks))
# calc number of total blocks occupied by this file
self.total_blks = 1 + my_num_ext_blks + my_num_data_blks
return fhb
def blocks_create_new(self, free_blks, name, hash_chain_blk, parent_blk, meta_info):
# assign block numbers
fhb_num = free_blks[0]
# ... for ext
self.ext_blk_nums = []
for i in xrange(self.num_ext_blks):
self.ext_blk_nums.append(free_blks[1+i])
# ... for data
off = 1 + self.num_ext_blks
self.data_blk_nums = []
for i in xrange(self.num_data_blks):
self.data_blk_nums.append(free_blks[off])
off += 1
ppb = self.volume.blkdev.block_longs - 56 # data pointer per block
# create file header block
fhb = FileHeaderBlock(self.blkdev, fhb_num)
byte_size = len(self.data)
if self.num_data_blks > ppb:
hdr_blks = self.data_blk_nums[0:ppb]
hdr_ext = self.ext_blk_nums[0]
else:
hdr_blks = self.data_blk_nums
hdr_ext = 0
fhb.create(parent_blk, name.get_ami_str(), hdr_blks, hdr_ext, byte_size, meta_info.get_protect(), meta_info.get_comment_ami_str(), meta_info.get_mod_ts(), hash_chain_blk)
fhb.write()
self.set_block(fhb)
# create file list (=ext) blocks
ext_off = ppb
for i in xrange(self.num_ext_blks):
flb = FileListBlock(self.blkdev, self.ext_blk_nums[i])
if i == self.num_ext_blks - 1:
ext_blk = 0
blks = self.data_blk_nums[ext_off:]
else:
ext_blk = self.ext_blk_nums[i+1]
blks = self.data_blk_nums[ext_off:ext_off+ppb]
flb.create(fhb_num, blks, ext_blk)
flb.write()
self.ext_blks.append(flb)
ext_off += ppb
# write data blocks
self.write()
self.valid = True
return fhb_num