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lib/FileSystem/LL/FAT.pm  view on Meta::CPAN

Each element of @partitions is a hash reference with fields

  raw is_active start_head start_sec_trac type end_head end_sec_track
  start_lba sectors start_sec end_sec start_trac end_track

Returns an empty list unless signature is correct.

=head2 interpret_bootsector($bootsector)

Takes a string containing 512Byte bootsector; returns a hash reference
with decoded fields.  The keys include

  jump oem sector_size sectors_in_cluster FAT_table_off num_FAT_tables
  root_dir_entries total_sectors1 media_type sectors_per_FAT16
  sectors_per_track heads hidden_sectors total_sectors2
  machine_code FS_type boot_signature volume_label physical_drive
  ext_boot_signature serial_number raw

  bpb_ext_boot_signature guessed_FAT_flavor
  total_sectors sectors_per_FAT pre_sectors last_cluster sector_of_cluster0

lib/FileSystem/LL/FAT.pm  view on Meta::CPAN

  sectors_per_FAT32 FAT_flags version rootdir_start_cluster
  fsi_sector_sector bootcopy_sector_sector reserved1 reserved2

otherwise

  extended_bpb head___dirty_flags

=head2 check_bootsector($fields)

Takes a hash reference with decoded fields of a bootsector; returns
TRUE if minimal sanity checks hold; die()s otherwise.

=head2 interpret_directory($dir, $is_fat32, [$keep_del, [$keep_dots, [$keep_labels]]])

  ($res, $files) = interpret_directory($dir, $is_FAT32);
  $files = interpret_directory($dir, $is_FAT32);

Takes catenation of directory cluster(s) as a string, extracts
information about the files in the directory.  Each element of array
referenced by $files is a hash reference with keys