package resize_fat::dir_entry; # $Id$ use diagnostics; use strict; my $DELETED_FLAG = 0xe5; my $_READ_ONLY_ATTR = 0x01; my $HIDDEN_ATTR = 0x02; my $SYSTEM_ATTR = 0x04; my $VOLUME_LABEL_ATTR = 0x08; my $VFAT_ATTR = 0x0f; my $DIRECTORY_ATTR = 0x10; 1; sub get_cluster($) { my ($entry) = @_; $entry->{first_cluster} + ($resize_fat::isFAT32 ? $entry->{first_cluster_high} * (1 << 16) : 0); } sub set_cluster($$) { my ($entry, $val) = @_; $entry->{first_cluster} = $val & ((1 << 16) - 1); $entry->{first_cluster_high} = $val >> 16 if $resize_fat::isFAT32; } sub is_unmoveable($) { my ($entry) = @_; $entry->{attributes} & $HIDDEN_ATTR || $entry->{attributes} & $SYSTEM_ATTR; } sub is_directory($) { my ($entry) = @_; $entry->{attributes} & $DIRECTORY_ATTR && $entry->{name} !~ /^\.\.? / && !is_special_entry($entry); } sub is_volume($) { my ($entry) = @_; !is_special_entry($entry) && $entry->{attributes} & $VOLUME_LABEL_ATTR; } sub is_file($) { my ($entry) = @_; !is_special_entry($entry) && !is_directory($entry) && !is_volume($entry) && $entry->{length}; } sub is_special_entry($) { my ($entry) = @_; my ($c) = unpack "C", $entry->{name}; #- skip empty slots, deleted files, and 0xF6?? (taken from kernel) $c == 0 || $c == $DELETED_FLAG || $c == 0xF6 and return 1; $entry->{attributes} == $VFAT_ATTR and return 1; 0; } #- return true if entry has been modified #- curr_dir_name is added to contains current directory name, "" for root. sub remap { my ($_curr_dir_name, $entry) = @_; is_special_entry($entry) and return; my $cluster = get_cluster($entry); my $new_cluster = resize_fat::c_rewritten::fat_remap($cluster); #-print "remapping cluster ", get_cluster($entry), " to $new_cluster"; $new_cluster == $cluster and return; #- no need to modify set_cluster($entry, $new_cluster); 1; } anch'>topic/MDK10_0-branch Hardware List for the Light Hardware Detection ToolThierry Vignaud [tv]

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