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Contents
require 'binary_struct'
module Ext3
# ////////////////////////////////////////////////////////////////////////////
# // Data definitions.
GDE = BinaryStruct.new([
'L', 'blk_bmp', # Starting block address of block bitmap.
'L', 'inode_bmp', # Starting block address of inode bitmap.
'L', 'inode_table', # Starting block address of inode table.
'S', 'unalloc_blks', # Number of unallocated blocks in group.
'S', 'unalloc_inodes', # Number of unallocated inodes in group.
'S', 'num_dirs', # Number of directories in group.
'a14', 'unused1', # Unused.
])
SIZEOF_GDE = GDE.size
# ////////////////////////////////////////////////////////////////////////////
# // Class.
class GroupDescriptorEntry
attr_accessor :blockAllocBmp, :inodeAllocBmp
def initialize(buf)
raise "Ext3::GroupDescriptorEntry.initialize: Nil buffer" if buf.nil?
# Decode the group descriptor table entry.
@gde = GDE.decode(buf)
end
# ////////////////////////////////////////////////////////////////////////////
# // Class helpers & accessors.
def blockBmp
@gde['blk_bmp']
end
def inodeBmp
@gde['inode_bmp']
end
def inodeTable
@gde['inode_table']
end
def numDirs
@gde['num_dirs']
end
# ////////////////////////////////////////////////////////////////////////////
# // Utility functions.
# Dump object.
def dump
out = "\#<#{self.class}:0x#{'%08x' % object_id}>\n"
out += "Block bitmap : 0x#{'%08x' % @gde['blk_bmp']}\n"
out += "Inode bitmap : 0x#{'%08x' % @gde['inode_bmp']}\n"
out += "Inode table : 0x#{'%08x' % @gde['inode_table']}\n"
out += "Unallocated blocks: 0x#{'%04x' % @gde['unalloc_blks']}\n"
out += "Unallocated inodes: 0x#{'%04x' % @gde['unalloc_inodes']}\n"
out += "Num directories : 0x#{'%04x' % @gde['num_dirs']}\n"
out
end
end
end
Version data entries
67 entries across 67 versions & 1 rubygems