1188 lines
38 KiB
Perl
1188 lines
38 KiB
Perl
#!/usr/bin/perl -w
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package DOS33;
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#
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# DOS33.pm:
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#
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# Module to access Apple II DOS 3.3 disk images.
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#
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# 20190115 LSH
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#
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use strict;
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use POSIX;
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use DSK;
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use Exporter::Auto;
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my $debug = 0;
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my $min_trk = 0; # Minimum track number
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my $max_trk = 34; # Maximum track number
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my $min_sec = 0; # Minimum sector number
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my $max_sec = 15; # Maximum sector number
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my $sec_size = 256; # Sector size
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my $vtoc_trk = 0x11; # Default VTOC track
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my $vtoc_sec = 0x00; # Default VTOC sector
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# DOS 3.3 file types
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my %file_types = (
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0x00 => ' T', # Text file
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0x01 => ' I', # INTBASIC file
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0x02 => ' A', # Applesoft file
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0x04 => ' B', # Binary file
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0x08 => ' S', # Special file
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0x10 => ' R', # Relocatable file
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0x20 => ' A', # A file
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0x40 => ' B', # B file
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);
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# DOS 3.3 file types (display)
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my %disp_file_types = (
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0x00 => ' T', # Unlocked Text file
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0x01 => ' I', # Unlocked INTBASIC file
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0x02 => ' A', # Unlocked Applesoft file
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0x04 => ' B', # Unlocked Binary file
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0x08 => ' S', # Unlocked Special file
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0x10 => ' R', # Unlocked Relocatable file
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0x20 => ' A', # Unlocked A file
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0x40 => ' B', # Unlocked B file
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0x80 => '*T', # Locked text file
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0x81 => '*I', # Locked INTBASIC file
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0x82 => '*A', # Locked Applesoft file
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0x84 => '*B', # Locked Binary file
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0x88 => '*S', # Locked Special file
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0x90 => '*R', # Locked Relocatable file
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0xa0 => '*A', # Locked A file
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0xb0 => '*B', # Locked B file
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);
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# For free space counts.
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my %ones_count = (
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0x00 => 0, # 0000
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0x01 => 1, # 0001
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0x02 => 1, # 0010
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0x03 => 2, # 0011
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0x04 => 1, # 0100
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0x05 => 2, # 0101
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0x06 => 2, # 0110
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0x07 => 3, # 0111
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0x08 => 1, # 1000
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0x09 => 2, # 1001
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0x0a => 2, # 1010
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0x0b => 3, # 1011
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0x0c => 2, # 1100
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0x0d => 3, # 1101
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0x0e => 3, # 1110
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0x0f => 4, # 1111
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);
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#
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# Volume Table of Contents (VTOC) Format
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#
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# 00 Not used
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# 01 Track number of first catalog sector
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# 02 Sector number of first catalog sector
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# 03 Release number of DOS used to INIT this diskette
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# 04-05 Not used
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# 06 Diskette volume number
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# 07-26 Not used
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# 27 Maximum number of track/sector list sector (122 for 256 byte sectors)
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# 28-2f Not used
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# 30 Last track where sectors were allocated
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# 31 Direction of track allocation (+1 or -1)
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# 32-33 Not used
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# 34 Number of tracks per diskette (normally 35)
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# 35 Number of sectors per track (13 or 16)
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# 36-37 Number of bytes per sector (LO/HI format)
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# 38-3b Bit map of free sectors in track 0
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# 3c-3f Bit map of free sectors in track 1
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# 40-43 Bit map of free sectors in track 2
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# ...
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# bc-bf Bit map of free sectors in track 33
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# c0-c3 Bit map of free sectors in track 34
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# c4-cf Bit maps for additional tracks if there are more than 35 tracks per diskette
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#
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my $vtoc_fmt_tmpl = 'xCCCx2Cx32Cx8CCx2CCva140';
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#
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# Bit maps of free sectors on a given track
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#
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# BYTE SECTORS
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# 0 FDEC BA98
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# 1 7654 3210
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# 2 .... .... (not used)
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# 3 .... .... (not used)
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#
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my $bit_map_free_sec_tmpl = 'nx2';
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#
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#
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# Catalog Sector Format
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#
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# 00 Not used
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# 01 Track number of next catalog sector (usually 11 hex)
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# 02 Sector number of next catalog sector
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# 03-0a Not used
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# 0b-2d First file descriptive entry
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# 2e-50 Second file descriptive entry
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# 51-73 Third file descriptive entry
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# 74-96 Fourth file descriptive entry
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# 97-b9 Fifth file descriptive entry
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# ba-dc Sixth file descriptive entry
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# dd-ff Seventh file descriptive entry
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#
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my $cat_sec_fmt_tmpl = 'xCCx8a35a35a35a35a35a35a35';
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#
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# File Descriptive Entry Format
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#
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# 00 Track of first track/sector list sector.
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# 01 Sector of first track/sector list sector.
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# 02 File type and flags:
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# 03-20 File name (30 characters)
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# 21-22 Length of file in sectors (LO/HI format).
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#
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my $file_desc_ent_dmt_tmpl = 'CCCa30C';
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#
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# Track/Sector ListFormat
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#
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# 00 Not used
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# 01 Track number of next T/S List sector if one was needed or zero if no more T/S List sectors.
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# 02 Sector number of next T/S List sector (if present).
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# 03-04 Not used
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# 05-06 Sector offset in file of the first sector described by this list.
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# 07-0b Not used
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# 0c-0d Track and sector of first data sector or zeros
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# 0e-0f Track and sector of second data sector or zeros
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# 10-ff Up to 120 more Track/Sector pairs
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#
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my $tslist_fmt_tmpl = 'xCCx2vx5a122';
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my %dsk = (); # Memory for disk image.
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#
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# Display a file entry in DOS 3.3 catalog format.
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#
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sub display_file_entry {
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my ($file_type, $filename, $file_length) = @_;
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print sprintf("%-2s %03d %s\n", $disp_file_types{$file_type}, $file_length, $filename);
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}
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# Parse a file entry
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sub parse_file_entry {
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my ($file_desc_entry) = @_;
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my ($first_tslist_trk, $first_tslist_sec, $file_type, $filename, $file_length) = unpack $file_desc_ent_dmt_tmpl, $file_desc_entry;
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return undef if $first_tslist_trk eq '';
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return undef if $first_tslist_trk == 0xff; # Deleted
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return undef if $first_tslist_trk == 0x00; # Never used
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$file_length = 0 unless defined $file_length;
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if (defined $first_tslist_trk && $first_tslist_trk ne '') {
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# Convert Apple ASCII to normal (clear the high bit)
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my $fname = '';
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my @bytes = unpack "C*", $filename;
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foreach my $byte (@bytes) {
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$fname .= sprintf("%c", $byte & 0x7f);
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}
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return $first_tslist_trk, $first_tslist_sec, $file_type, $fname, $file_length;
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}
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return 0;
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}
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# Parse a catalog sector
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sub parse_cat_sec {
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my ($buf) = @_;
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my ($trk_num_nxt_cat_sec, $sec_num_nxt_cat_sec, $first_file_desc_ent, $second_file_desc_ent, $third_file_desc_ent, $fourth_file_desc_ent, $fifth_file_desc_ent, $sixth_file_desc_ent, $seventh_file_desc_ent) = unpack $cat_sec_fmt_tmpl, $buf;
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my @files = ();
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my $empty_file_entry = 0;
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my ($first_tslist_trk, $first_tslist_sec, $file_type, $filename, $file_length);
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($first_tslist_trk, $first_tslist_sec, $file_type, $filename, $file_length) = parse_file_entry($first_file_desc_ent);
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if (defined $first_tslist_trk && $first_tslist_trk ne '') {
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push @files, { 'file_type' => $file_type, 'filename' => $filename, 'file_length' => $file_length, 'trk' => $first_tslist_trk, 'sec' => $first_tslist_sec, 'cat_offset' => 1 };
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} else {
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$empty_file_entry = 1;
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}
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($first_tslist_trk, $first_tslist_sec, $file_type, $filename, $file_length) = parse_file_entry($second_file_desc_ent);
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if (defined $first_tslist_trk && $first_tslist_trk ne '') {
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push @files, { 'file_type' => $file_type, 'filename' => $filename, 'file_length' => $file_length, 'trk' => $first_tslist_trk, 'sec' => $first_tslist_sec, 'cat_offset' => 2 };
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} else {
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$empty_file_entry = 2 if $empty_file_entry == 0;
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}
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($first_tslist_trk, $first_tslist_sec, $file_type, $filename, $file_length) = parse_file_entry($third_file_desc_ent);
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if (defined $first_tslist_trk && $first_tslist_trk ne '') {
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push @files, { 'file_type' => $file_type, 'filename' => $filename, 'file_length' => $file_length, 'trk' => $first_tslist_trk, 'sec' => $first_tslist_sec, 'cat_offset' => 3 };
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} else {
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$empty_file_entry = 3 if $empty_file_entry == 0;
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}
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($first_tslist_trk, $first_tslist_sec, $file_type, $filename, $file_length) = parse_file_entry($fourth_file_desc_ent);
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if (defined $first_tslist_trk && $first_tslist_trk ne '') {
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push @files, { 'file_type' => $file_type, 'filename' => $filename, 'file_length' => $file_length, 'trk' => $first_tslist_trk, 'sec' => $first_tslist_sec, 'cat_offset' => 4 };
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} else {
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$empty_file_entry = 4 if $empty_file_entry == 0;
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}
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($first_tslist_trk, $first_tslist_sec, $file_type, $filename, $file_length) = parse_file_entry($fifth_file_desc_ent);
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if (defined $first_tslist_trk && $first_tslist_trk ne '') {
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push @files, { 'file_type' => $file_type, 'filename' => $filename, 'file_length' => $file_length, 'trk' => $first_tslist_trk, 'sec' => $first_tslist_sec, 'cat_offset' => 5 };
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} else {
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$empty_file_entry = 5 if $empty_file_entry == 0;
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}
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($first_tslist_trk, $first_tslist_sec, $file_type, $filename, $file_length) = parse_file_entry($sixth_file_desc_ent);
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if (defined $first_tslist_trk && $first_tslist_trk ne '') {
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push @files, { 'file_type' => $file_type, 'filename' => $filename, 'file_length' => $file_length, 'trk' => $first_tslist_trk, 'sec' => $first_tslist_sec, 'cat_offset' => 6 };
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} else {
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$empty_file_entry = 6 if $empty_file_entry == 0;
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}
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($first_tslist_trk, $first_tslist_sec, $file_type, $filename, $file_length) = parse_file_entry($seventh_file_desc_ent);
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if (defined $first_tslist_trk && $first_tslist_trk ne '') {
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push @files, { 'file_type' => $file_type, 'filename' => $filename, 'file_length' => $file_length, 'trk' => $first_tslist_trk, 'sec' => $first_tslist_sec, 'cat_offset' => 7 };
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} else {
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$empty_file_entry = 7 if $empty_file_entry == 0;
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}
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return $trk_num_nxt_cat_sec, $sec_num_nxt_cat_sec, $empty_file_entry, @files;
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}
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# Get catalog sector
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sub get_cat_sec {
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my ($dskfile, $cat_trk, $cat_sec) = @_;
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my $buf;
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if (rts($dskfile, $cat_trk, $cat_sec, \$buf)) {
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return $buf, parse_cat_sec($buf);
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}
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return 0;
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}
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#
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# Display disk catalog
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#
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sub catalog {
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my ($dskfile, $dbg) = @_;
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if (defined $dbg && $dbg) {
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$debug = 1;
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}
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my ($trk_num_1st_cat_sec, $sec_num_1st_cat_sec, $rel_num_dos, $dsk_vol_num, $max_tslist_secs, $last_trk_secs_alloc, $dir_trk_alloc, $num_trks_dsk, $bit_map_free_secs) = get_vtoc_sec($dskfile);
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if (defined $trk_num_1st_cat_sec && $trk_num_1st_cat_sec ne '') {
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print sprintf("DISK VOLUME %d\n\n", $dsk_vol_num);
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my $cat_buf;
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my ($next_cat_trk, $next_cat_sec) = ($trk_num_1st_cat_sec, $sec_num_1st_cat_sec);
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my @files = ();
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my $empty_file_entry;
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do {
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($cat_buf, $next_cat_trk, $next_cat_sec, $empty_file_entry, @files) = get_cat_sec($dskfile, $next_cat_trk, $next_cat_sec);
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#if (defined $next_cat_trk && $next_cat_trk ne '') {
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if (scalar @files) {
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foreach my $file (@files) {
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display_file_entry($file->{'file_type'}, $file->{'filename'}, $file->{'file_length'});
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}
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}
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} while ($next_cat_trk != 0);
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} else {
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return 0;
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}
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return 1;
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}
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#
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# Calculate free space
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#
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sub freespace {
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my ($dskfile, $dbg) = @_;
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if (defined $dbg && $dbg) {
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$debug = 1;
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}
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my ($trk_num_1st_cat_sec, $sec_num_1st_cat_sec, $rel_num_dos, $dsk_vol_num, $max_tslist_secs, $last_trk_secs_alloc, $dir_trk_alloc, $num_trks_dsk, $num_secs_dsk, $num_bytes_sec, $bit_map_free_secs) = get_vtoc_sec($dskfile);
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my $tmpl = '';
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for (my $t = $min_trk; $t <= $max_trk; $t++) {
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$tmpl .= $bit_map_free_sec_tmpl;
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}
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my $free_sectors = 0;
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my @flds = unpack $tmpl, $bit_map_free_secs;
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for (my $t = $min_trk; $t <= $max_trk; $t++) {
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$free_sectors += $ones_count{($flds[$t] >> 12)}; # Sectors fdec
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$free_sectors += $ones_count{($flds[$t] >> 8) & 0x0f}; # Sectors ba98
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$free_sectors += $ones_count{($flds[$t] >> 4) & 0x0f}; # Sectors 7654
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$free_sectors += $ones_count{$flds[$t] & 0x0f}; # Sectors 3210
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}
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#print "$free_sectors sectors free\n";
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return $free_sectors;
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}
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#
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# Display sector free map
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#
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sub freemap {
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my ($dskfile, $dbg) = @_;
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if (defined $dbg && $dbg) {
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$debug = 1;
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}
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my ($trk_num_1st_cat_sec, $sec_num_1st_cat_sec, $rel_num_dos, $dsk_vol_num, $max_tslist_secs, $last_trk_secs_alloc, $dir_trk_alloc, $num_trks_dsk, $num_secs_dsk, $num_bytes_sec, $bit_map_free_secs) = get_vtoc_sec($dskfile);
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print " 0123456789abcdef\n";
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print " +----------------\n";
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my $tmpl = '';
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for (my $t = $min_trk; $t <= $max_trk; $t++) {
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$tmpl .= $bit_map_free_sec_tmpl;
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}
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print "tmpl=$tmpl\n" if $debug;
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my $free_sectors = 0;
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my @flds = unpack $tmpl, $bit_map_free_secs;
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for (my $t = $min_trk; $t <= $max_trk; $t++) {
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print sprintf("%2d %04x\n", $t, $flds[$t]) if $debug;
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print sprintf("%2d %016b\n", $t, $flds[$t]) if $debug;
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my $fr = sprintf("%016b", $flds[$t]);
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print "fr=$fr\n" if $debug;
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my $fm = reverse $fr;
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print "fm=$fm\n" if $debug;
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$fm =~ s/0/ /g;
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$fm =~ s/1/*/g;
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print "fm=$fm\n" if $debug;
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print sprintf("%2d|%s\n", $t, $fm);
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$free_sectors += $ones_count{($flds[$t] >> 12)}; # Sectors fdec
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$free_sectors += $ones_count{($flds[$t] >> 8) & 0x0f}; # Sectors ba98
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$free_sectors += $ones_count{($flds[$t] >> 4) & 0x0f}; # Sectors 7654
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$free_sectors += $ones_count{$flds[$t] & 0x0f}; # Sectors 3210
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}
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#print "bit_map_free_secs=";
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#my @bytes = unpack "C*", $bit_map_free_secs;
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#foreach my $byte (@bytes) {
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# print sprintf("%02x ", $byte);
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#}
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print "\n";
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print "$free_sectors sectors free\n";
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}
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# Parse a VTOC sector
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sub parse_vtoc_sec {
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my ($buf) = @_;
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my ($trk_num_1st_cat_sec, $sec_num_1st_cat_sec, $rel_num_dos, $dsk_vol_num, $max_tslist_secs, $last_trk_secs_alloc, $dir_trk_alloc, $num_trks_dsk, $num_secs_dsk, $num_bytes_sec, $bit_map_free_secs) = unpack $vtoc_fmt_tmpl, $buf;
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if ($debug) {
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print sprintf("trk_num_1st_cat_sec=%02x\n", $trk_num_1st_cat_sec);
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print sprintf("sec_num_1st_cat_sec=%02x\n", $sec_num_1st_cat_sec);
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print sprintf("rel_num_dos=%02x\n", $rel_num_dos);
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print sprintf("dsk_vol_num=%02x\n", $dsk_vol_num);
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print sprintf("max_tslist_secs=%02x\n", $max_tslist_secs);
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print sprintf("last_trk_secs_alloc=%02x\n", $last_trk_secs_alloc);
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print sprintf("dir_trk_alloc=%02x\n", $dir_trk_alloc);
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print sprintf("num_trks_dsk=%02x\n", $num_trks_dsk);
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print sprintf("num_secs_dsk=%02x\n", $num_secs_dsk);
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print sprintf("num_bytes_sec=%04x\n", $num_bytes_sec);
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print "bit_map_free_secs=";
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my @bytes = unpack "C*", $bit_map_free_secs;
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foreach my $byte (@bytes) {
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print sprintf("%02x ", $byte);
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}
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print "\n";
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}
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|
|
return $trk_num_1st_cat_sec, $sec_num_1st_cat_sec, $rel_num_dos, $dsk_vol_num, $max_tslist_secs, $last_trk_secs_alloc, $dir_trk_alloc, $num_trks_dsk, $num_secs_dsk, $num_bytes_sec, $bit_map_free_secs;
|
|
}
|
|
|
|
#
|
|
# Get VTOC Sector
|
|
#
|
|
sub get_vtoc_sec {
|
|
my ($dskfile) = @_;
|
|
|
|
my $buf;
|
|
|
|
if (rts($dskfile, $vtoc_trk, $vtoc_sec, \$buf)) {
|
|
dump_sec($buf) if $debug;
|
|
return parse_vtoc_sec($buf);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
sub write_vtoc {
|
|
my ($dskfile, $trk_num_1st_cat_sec, $sec_num_1st_cat_sec, $rel_num_dos, $dsk_vol_num, $max_tslist_secs, $last_trk_secs_alloc, $dir_trk_alloc, $num_trks_dsk, $num_secs_dsk, $num_bytes_sec, $bit_map_free_secs) = @_;
|
|
|
|
# Re-pack vtoc sector, the double pack is to pad the sector with zero bytes.
|
|
my $buf = pack "a$sec_size", pack $vtoc_fmt_tmpl, ($trk_num_1st_cat_sec, $sec_num_1st_cat_sec, $rel_num_dos, $dsk_vol_num, $max_tslist_secs, $last_trk_secs_alloc, $dir_trk_alloc, $num_trks_dsk, $num_secs_dsk, $num_bytes_sec, $bit_map_free_secs);
|
|
|
|
print "Writing vtoc\n" if $debug;
|
|
|
|
if ($debug) {
|
|
print "vtoc=";
|
|
my @bytes = unpack "C*", $buf;
|
|
foreach my $byte (@bytes) {
|
|
print sprintf("%02x ", $byte);
|
|
}
|
|
print "\n";
|
|
}
|
|
|
|
dump_sec($buf) if $debug;
|
|
|
|
# Write back vtoc sector.
|
|
if (!wts($dskfile, $vtoc_trk, $vtoc_sec, $buf)) {
|
|
print "Failed to write vtoc sector $vtoc_trk $vtoc_sec!\n";
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
#
|
|
# Parse a sector of a track/sector list
|
|
#
|
|
sub parse_tslist_sec {
|
|
my ($buf, $num_secs) = @_;
|
|
|
|
#dump_sec($buf);
|
|
# Track/Sector ListFormat
|
|
#
|
|
# 00 Not used
|
|
# 01 Track number of next T/S List sector if one was needed or zero if no more T/S List sectors.
|
|
# 02 Sector number of next T/S List sector (if present).
|
|
# 03-04 Not used
|
|
# 05-06 Sector offset in file of the first sector described by this list.
|
|
# 07-0b Not used
|
|
# 0c-0d Track and sector of first data sector or zeros
|
|
# 0e-0f Track and sector of second data sector or zeros
|
|
# 10-ff Up to 120 more Track/Sector pairs
|
|
#
|
|
#$tslist_fmt_tmpl = 'xCCx2vx5a122';
|
|
my @secs = ();
|
|
|
|
##FIXME -- tslist_fmt_tmpl should not have 122 hard coded, that value shoulc come from vtoc.
|
|
my ($next_tslist_trk, $next_tslist_sec, $soffset, $tslist) = unpack $tslist_fmt_tmpl, $buf;
|
|
|
|
#if ($debug) {
|
|
print "num_secs=$num_secs\n";
|
|
print "tslist=";
|
|
my @bytes = unpack "C*", $tslist;
|
|
foreach my $byte (@bytes) {
|
|
print sprintf("%02x ", $byte);
|
|
}
|
|
print "\n";
|
|
#}
|
|
|
|
my $tmpl = '';
|
|
for (my $ts = 0; $ts < 122; $ts++) {
|
|
$tmpl .= 'CC';
|
|
}
|
|
my (@tsl) = unpack $tmpl, $tslist;
|
|
|
|
for (my $ts = 0; $ts < 122; $ts++) {
|
|
my $sec = pop @tsl;
|
|
my $trk = pop @tsl;
|
|
last unless defined $trk;
|
|
last if $trk eq '';
|
|
next if $trk == 0 && $sec == 0;
|
|
print "Adding trk=$trk sec=$sec to tslist\n";
|
|
unshift @secs, { 'trk' => $trk, 'sec' => $sec };
|
|
}
|
|
|
|
return $next_tslist_trk, $next_tslist_sec, @secs;
|
|
}
|
|
|
|
#
|
|
# Get a sector of a track/sector list
|
|
#
|
|
sub get_tslist_sec {
|
|
my ($dskfile, $tslist_trk, $tslist_sec, $num_secs) = @_;
|
|
|
|
my $buf;
|
|
|
|
if (rts($dskfile, $tslist_trk, $tslist_sec, \$buf)) {
|
|
#dump_sec($buf) if $debug;
|
|
dump_sec($buf);
|
|
return parse_tslist_sec($buf, $num_secs);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#
|
|
# Get a track/sector list
|
|
#
|
|
sub get_tslist {
|
|
my ($dskfile, $tslist_trk, $tslist_sec, $num_secs) = @_;
|
|
|
|
my ($next_tslist_trk, $next_tslist_sec) = ($tslist_trk, $tslist_sec);
|
|
|
|
my @secs = ();
|
|
|
|
do {
|
|
($next_tslist_trk, $next_tslist_sec, @secs) = get_tslist_sec($dskfile, $next_tslist_trk, $next_tslist_sec, $num_secs);
|
|
if (defined $next_tslist_trk && $next_tslist_trk ne '') {
|
|
print "pushing trk $next_tslist_trk sec $next_tslist_sec\n";
|
|
push @secs, { 'trk' => $next_tslist_trk, 'sec', $next_tslist_sec };
|
|
}
|
|
} while ($next_tslist_trk != 0);
|
|
|
|
return @secs;
|
|
}
|
|
|
|
#
|
|
# Find a file in the catalog
|
|
#
|
|
sub find_file {
|
|
my ($dskfile, $filename) = @_;
|
|
|
|
my ($trk_num_1st_cat_sec, $sec_num_1st_cat_sec, $rel_num_dos, $dsk_vol_num, $max_tslist_secs, $last_trk_secs_alloc, $dir_trk_alloc, $num_trks_dsk, $bit_map_free_secs) = get_vtoc_sec($dskfile);
|
|
|
|
if (defined $trk_num_1st_cat_sec && $trk_num_1st_cat_sec ne '') {
|
|
my ($next_cat_trk, $next_cat_sec) = ($trk_num_1st_cat_sec, $sec_num_1st_cat_sec);
|
|
my $cat_buf;
|
|
my @files = ();
|
|
do {
|
|
my $cur_cat_trk = $next_cat_trk;
|
|
my $cur_cat_sec = $next_cat_sec;
|
|
my $empty_file_entry;
|
|
($cat_buf, $next_cat_trk, $next_cat_sec, $empty_file_entry, @files) = get_cat_sec($dskfile, $next_cat_trk, $next_cat_sec);
|
|
#if (defined $next_cat_trk && $next_cat_trk ne '') {
|
|
if (scalar @files) {
|
|
foreach my $file (@files) {
|
|
my $fn = $file->{'filename'};
|
|
$fn =~ s/\s+$//g;
|
|
if ($fn eq $filename) {
|
|
#print "trk=$file->{'trk'} sec=$file->{'sec'}\n";
|
|
return $file, $cur_cat_trk, $cur_cat_sec, $cat_buf;
|
|
}
|
|
}
|
|
}
|
|
} while ($next_cat_trk != 0);
|
|
} else {
|
|
return 0;
|
|
}
|
|
|
|
print "File $filename NOT FOUND\n";
|
|
|
|
return 0;
|
|
}
|
|
|
|
#
|
|
# Read a file
|
|
#
|
|
sub read_file {
|
|
my ($dskfile, $filename, $mode, $conv, $dbg) = @_;
|
|
|
|
$mode = '' unless defined $mode;
|
|
$conv = 0 unless defined $conv;
|
|
|
|
$debug = 1 if (defined $dbg && $dbg);
|
|
|
|
my ($file, $cat_trk, $cat_sec, $cat_buf) = find_file($dskfile, $filename);
|
|
if (defined $file && $file && $file->{'trk'}) {
|
|
my $buf;
|
|
|
|
my @secs = get_tslist($dskfile, $file->{'trk'}, $file->{'sec'}, $file->{'file_length'});
|
|
foreach my $sec (@secs) {
|
|
next if $sec->{'trk'} == 0 && $sec->{'sec'} == 0;
|
|
#print "**** trk=$sec->{'trk'} sec=$sec->{'sec'}\n";
|
|
if (rts($dskfile, $sec->{'trk'}, $sec->{'sec'}, \$buf)) {
|
|
dump_sec($buf) if $debug;
|
|
#my @bytes = unpack "C$sec_size", $buf;
|
|
my @bytes = unpack "C*", $buf;
|
|
foreach my $byte (@bytes) {
|
|
# For text file translation.
|
|
last if $byte == 0x00 && $mode eq 'T';
|
|
# Translate \r to \n
|
|
$byte = 0x0a if $byte == 0x8d && $conv;
|
|
# Convert Apple II ASCII to standard ASCII (clear high bit)
|
|
$byte &= 0x7f if $mode eq 'T';
|
|
#print sprintf("%c", $byte & 0x7f);
|
|
print sprintf("%c", $byte);
|
|
}
|
|
##FIXME -- need to handle additional file types + handle incomplete last sectors properly here.
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#
|
|
# Unlock a file
|
|
#
|
|
sub unlock_file {
|
|
my ($dskfile, $filename, $dbg) = @_;
|
|
|
|
$debug = 1 if (defined $dbg && $dbg);
|
|
|
|
my ($file, $cat_trk, $cat_sec, $cat_buf) = find_file($dskfile, $filename);
|
|
if (defined $file && $file && $file->{'trk'}) {
|
|
print "cat_trk=$cat_trk cat_sec=$cat_sec\n" if $debug;
|
|
dump_sec($cat_buf) if $debug;
|
|
my @bytes = unpack "C*", $cat_buf;
|
|
|
|
# 12 is number of bytes before file descriptive entries, 35 is length of file descriptive entry.
|
|
my $file_type = $bytes[13 + (($file->{'cat_offset'} - 1) * 35)];
|
|
|
|
print sprintf("cat_offset=%d\n", $file->{'cat_offset'}) if $debug;
|
|
print sprintf("file_type=%02x\n", $file_type) if $debug;
|
|
|
|
# Mark file as unlocked.
|
|
my $new_file_type = $bytes[13 + (($file->{'cat_offset'} - 1) * 35)] & 0x7f;
|
|
print sprintf("new_file_type=%02x\n", $new_file_type) if $debug;
|
|
$bytes[13 + (($file->{'cat_offset'} - 1) * 35)] = $new_file_type;
|
|
|
|
# Re-pack the data in the catalog sector.
|
|
$cat_buf = pack "a$sec_size", pack "C*", @bytes;
|
|
|
|
dump_sec($cat_buf) if $debug;
|
|
# Write back catalog sector.
|
|
if (!wts($dskfile, $cat_trk, $cat_sec, $cat_buf)) {
|
|
print "Failed to write catalog sector $cat_trk $cat_sec!\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
#
|
|
# Lock a file
|
|
#
|
|
sub lock_file {
|
|
my ($dskfile, $filename, $dbg) = @_;
|
|
|
|
$debug = 1 if (defined $dbg && $dbg);
|
|
|
|
my ($file, $cat_trk, $cat_sec, $cat_buf) = find_file($dskfile, $filename);
|
|
if (defined $file && $file && $file->{'trk'}) {
|
|
print "cat_trk=$cat_trk cat_sec=$cat_sec\n" if $debug;
|
|
dump_sec($cat_buf) if $debug;
|
|
my @bytes = unpack "C*", $cat_buf;
|
|
|
|
# 12 is number of bytes before file descriptive entries, 35 is length of file descriptive entry.
|
|
my $file_type = $bytes[13 + (($file->{'cat_offset'} - 1) * 35)];
|
|
|
|
print sprintf("cat_offset=%d\n", $file->{'cat_offset'}) if $debug;
|
|
print sprintf("file_type=%02x\n", $file_type) if $debug;
|
|
|
|
# Mark file as locked.
|
|
my $new_file_type = $bytes[13 + (($file->{'cat_offset'} - 1) * 35)] | 0x80;
|
|
print sprintf("new_file_type=%02x\n", $new_file_type) if $debug;
|
|
$bytes[13 + (($file->{'cat_offset'} - 1) * 35)] = $new_file_type;
|
|
|
|
# Re-pack the data in the sector.
|
|
$cat_buf = pack "a$sec_size", pack "C*", @bytes;
|
|
|
|
dump_sec($cat_buf) if $debug;
|
|
# Write back catalog sector.
|
|
if (!wts($dskfile, $cat_trk, $cat_sec, $cat_buf)) {
|
|
print "Failed to write catalog sector $cat_trk $cat_sec!\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
#
|
|
# Delete a file
|
|
#
|
|
sub delete_file {
|
|
my ($dskfile, $filename, $dbg) = @_;
|
|
|
|
$debug = 1 if (defined $dbg && $dbg);
|
|
|
|
my ($file, $cat_trk, $cat_sec, $cat_buf) = find_file($dskfile, $filename);
|
|
if (defined $file && $file && $file->{'trk'}) {
|
|
print "cat_trk=$cat_trk cat_sec=$cat_sec\n" if $debug;
|
|
dump_sec($cat_buf) if $debug;
|
|
my @bytes = unpack "C*", $cat_buf;
|
|
|
|
# Mark file as deleted.
|
|
# 11 is first tslist sector track
|
|
my $first_tslist_sec_trk = $bytes[11 + (($file->{'cat_offset'} - 1) * 35)];
|
|
print sprintf("first_tslist_sec_trk=%02x\n", $first_tslist_sec_trk) if $debug;
|
|
$bytes[11 + (($file->{'cat_offset'} - 1) * 35)] = 0x00;
|
|
# Set last byte of filename to first tslist sector track
|
|
$bytes[43 + (($file->{'cat_offset'} - 1) * 35)] = $first_tslist_sec_trk;
|
|
|
|
# Re-pack the data in the sector.
|
|
$cat_buf = pack "a$sec_size", pack "C*", @bytes;
|
|
|
|
dump_sec($cat_buf) if $debug;
|
|
# Write back catalog sector.
|
|
if (!wts($dskfile, $cat_trk, $cat_sec, $cat_buf)) {
|
|
print "Failed to write catalog sector $cat_trk $cat_sec!\n";
|
|
}
|
|
|
|
my ($trk_num_1st_cat_sec, $sec_num_1st_cat_sec, $rel_num_dos, $dsk_vol_num, $max_tslist_secs, $last_trk_secs_alloc, $dir_trk_alloc, $num_trks_dsk, $num_secs_dsk, $num_bytes_sec, $bit_map_free_secs) = get_vtoc_sec($dskfile);
|
|
|
|
my $tmpl = '';
|
|
for (my $t = $min_trk; $t <= $max_trk; $t++) {
|
|
$tmpl .= $bit_map_free_sec_tmpl;
|
|
}
|
|
|
|
print "tmpl=$tmpl\n" if $debug;
|
|
my @flds = unpack $tmpl, $bit_map_free_secs;
|
|
|
|
if ($debug) {
|
|
for (my $t = $min_trk; $t <= $max_trk; $t++) {
|
|
print sprintf("%2d %04x\n", $t, $flds[$t]) if $debug;
|
|
print sprintf("%2d %016b\n", $t, $flds[$t]) if $debug;
|
|
my $fr = sprintf("%016b", $flds[$t]);
|
|
print "fr=$fr\n" if $debug;
|
|
my $fm = reverse $fr;
|
|
print "fm=$fm\n" if $debug;
|
|
$fm =~ s/0/ /g;
|
|
$fm =~ s/1/*/g;
|
|
print "fm=$fm\n" if $debug;
|
|
print sprintf("%2d|%s\n", $t, $fm);
|
|
}
|
|
}
|
|
|
|
# get the files t/s list and free those sectors
|
|
my @secs = get_tslist($dskfile, $file->{'trk'}, $file->{'sec'}, $file->{'file_length'});
|
|
foreach my $sec (@secs) {
|
|
next if $sec->{'trk'} == 0 && $sec->{'sec'} == 0;
|
|
print "Freeing trk=$sec->{'trk'} sec=$sec->{'sec'}\n";
|
|
my $fr = sprintf("%016b", $flds[$sec->{'trk'}]);
|
|
#print "fr=$fr\n";
|
|
$flds[$sec->{'trk'}] |= (1 << $sec->{'sec'});
|
|
my $fr2 = sprintf("%016b", $flds[$sec->{'trk'}]);
|
|
#print "fr=$fr2\n";
|
|
}
|
|
##FIXME -- may need to free additional tslist sectors.
|
|
$flds[$file->{'trk'}] |= (1 << $file->{'sec'});
|
|
|
|
if ($debug) {
|
|
for (my $t = $min_trk; $t <= $max_trk; $t++) {
|
|
print sprintf("%2d %04x\n", $t, $flds[$t]) if $debug;
|
|
print sprintf("%2d %016b\n", $t, $flds[$t]) if $debug;
|
|
my $fr = sprintf("%016b", $flds[$t]);
|
|
print "fr=$fr\n" if $debug;
|
|
my $fm = reverse $fr;
|
|
print "fm=$fm\n" if $debug;
|
|
$fm =~ s/0/ /g;
|
|
$fm =~ s/1/*/g;
|
|
print "fm=$fm\n" if $debug;
|
|
print sprintf("%2d|%s\n", $t, $fm);
|
|
}
|
|
}
|
|
|
|
$bit_map_free_secs = pack $tmpl, @flds;
|
|
|
|
# Write back vtoc
|
|
if (!write_vtoc($dskfile, $trk_num_1st_cat_sec, $sec_num_1st_cat_sec, $rel_num_dos, $dsk_vol_num, $max_tslist_secs, $last_trk_secs_alloc, $dir_trk_alloc, $num_trks_dsk, $num_secs_dsk, $num_bytes_sec, $bit_map_free_secs)) {
|
|
print "I/O ERROR!\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
#
|
|
# Rename a file
|
|
#
|
|
sub rename_file {
|
|
my ($dskfile, $filename, $new_filename, $dbg) = @_;
|
|
|
|
$debug = 1 if (defined $dbg && $dbg);
|
|
|
|
if (length($new_filename) > 30) {
|
|
print "Filename $new_filename too long\n";
|
|
return;
|
|
}
|
|
|
|
my ($file, $cat_trk, $cat_sec, $cat_buf) = find_file($dskfile, $filename);
|
|
if (defined $file && $file && $file->{'trk'}) {
|
|
print "cat_trk=$cat_trk cat_sec=$cat_sec\n" if $debug;
|
|
dump_sec($cat_buf) if $debug;
|
|
my @bytes = unpack "C*", $cat_buf;
|
|
|
|
my $fname_start = 14 + (($file->{'cat_offset'} - 1) * 35);
|
|
print sprintf("fname_start=%02x\n", $fname_start) if $debug;
|
|
|
|
# Change filename
|
|
for (my $i = 0; $i < length($new_filename); $i++) {
|
|
# Set the high bit
|
|
$bytes[$fname_start + $i] = ord(substr($new_filename, $i, 1)) | 0x80;
|
|
}
|
|
# Make sure new filename is space padded
|
|
for (my $i = length($new_filename); $i < 30; $i++) {
|
|
# 0xa0 is Apple II space (high bit set)
|
|
$bytes[$fname_start + $i] = 0xa0;
|
|
}
|
|
|
|
# Re-pack the data in the catalog sector.
|
|
$cat_buf = pack "a$sec_size", pack "C*", @bytes;
|
|
|
|
dump_sec($cat_buf) if $debug;
|
|
# Write back catalog sector.
|
|
if (!wts($dskfile, $cat_trk, $cat_sec, $cat_buf)) {
|
|
print "Failed to write catalog sector $cat_trk $cat_sec!\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
#
|
|
# Find empty file descriptive entry for writing a file.
|
|
#
|
|
sub find_empty_file_desc_ent {
|
|
my ($dskfile, $dbg) = @_;
|
|
|
|
$debug = 1 if (defined $dbg && $dbg);
|
|
|
|
my ($trk_num_1st_cat_sec, $sec_num_1st_cat_sec, $rel_num_dos, $dsk_vol_num, $max_tslist_secs, $last_trk_secs_alloc, $dir_trk_alloc, $num_trks_dsk, $bit_map_free_secs) = get_vtoc_sec($dskfile);
|
|
|
|
if (defined $trk_num_1st_cat_sec && $trk_num_1st_cat_sec ne '') {
|
|
my ($next_cat_trk, $next_cat_sec) = ($trk_num_1st_cat_sec, $sec_num_1st_cat_sec);
|
|
my $cat_buf;
|
|
my @files = ();
|
|
my $empty_file_entry;
|
|
do {
|
|
my $cur_cat_trk = $next_cat_trk;
|
|
my $cur_cat_sec = $next_cat_sec;
|
|
($cat_buf, $next_cat_trk, $next_cat_sec, $empty_file_entry, @files) = get_cat_sec($dskfile, $next_cat_trk, $next_cat_sec);
|
|
return ($cat_buf, $cur_cat_trk, $cur_cat_sec, $empty_file_entry) if $empty_file_entry > 0;
|
|
} while ($next_cat_trk != 0);
|
|
} else {
|
|
print "I/O ERROR!\n";
|
|
return 0;
|
|
}
|
|
|
|
print "DISK FULL!\n";
|
|
|
|
return 0;
|
|
}
|
|
|
|
#
|
|
# Get a list of free sectors
|
|
#
|
|
sub find_free_sectors {
|
|
my ($dskfile, $dbg) = @_;
|
|
|
|
$debug = 1 if (defined $dbg && $dbg);
|
|
|
|
my ($trk_num_1st_cat_sec, $sec_num_1st_cat_sec, $rel_num_dos, $dsk_vol_num, $max_tslist_secs, $last_trk_secs_alloc, $dir_trk_alloc, $num_trks_dsk, $num_secs_dsk, $num_bytes_sec, $bit_map_free_secs) = get_vtoc_sec($dskfile);
|
|
|
|
my @secs = ();
|
|
|
|
my $tmpl = '';
|
|
for (my $t = $min_trk; $t <= $max_trk; $t++) {
|
|
$tmpl .= $bit_map_free_sec_tmpl;
|
|
}
|
|
print "tmpl=$tmpl\n" if $debug;
|
|
my @flds = unpack $tmpl, $bit_map_free_secs;
|
|
for (my $t = $min_trk; $t <= $max_trk; $t++) {
|
|
for (my $s = 0; $s < 16; $s++) {
|
|
if ($flds[$t] & 1 << $s) {
|
|
print "Free $t $s\n" if $debug;
|
|
push @secs, { 'trk' => $t, 'sec' => $s };
|
|
}
|
|
}
|
|
}
|
|
|
|
return @secs;
|
|
}
|
|
|
|
#
|
|
# Copy a file
|
|
#
|
|
sub copy_file {
|
|
my ($dskfile, $filename, $new_filename, $dbg) = @_;
|
|
|
|
$debug = 1 if (defined $dbg && $dbg);
|
|
|
|
my ($file, $cat_trk, $cat_sec, $cat_buf) = find_file($dskfile, $filename);
|
|
if (defined $file && $file && $file->{'trk'}) {
|
|
##FIXME
|
|
|
|
}
|
|
}
|
|
|
|
#
|
|
# Write a file to disk image.
|
|
#
|
|
sub write_file {
|
|
my ($dskfile, $filename, $new_filename, $mode, $conv, $dbg) = @_;
|
|
|
|
$debug = 1 if (defined $dbg && $dbg);
|
|
|
|
$debug = 1;
|
|
|
|
# Find empty catalog file descriptive entry.
|
|
my ($cat_buf, $cat_trk, $cat_sec, $empty_file_entry) = find_empty_file_desc_ent($dskfile);
|
|
|
|
print "cat_trk=$cat_trk cat_sec=$cat_sec empty_file_entry=$empty_file_entry\n" if $debug;
|
|
|
|
if ($empty_file_entry) {
|
|
# Find free sectors.
|
|
my @used_secs = ();
|
|
my @free_secs = find_free_sectors($dskfile, $debug);
|
|
if (scalar @free_secs) {
|
|
my $sectors_used = 0;
|
|
|
|
my $buf;
|
|
|
|
# Read input file a sector worth at a time.
|
|
my $file_length = 0;
|
|
|
|
my $ifh;
|
|
|
|
if (open($ifh, "<$filename")) {
|
|
my $done = 0;
|
|
my $error = 0;
|
|
while (! $done) {
|
|
# Initialize sector buffer.
|
|
$buf = pack "C*", 0x00 x $sec_size;
|
|
|
|
# Read a sectors worth of data.
|
|
my $bytes_read = read($ifh, $buf, $sec_size);
|
|
print "Read $bytes_read bytes\n" if $debug;
|
|
if ($bytes_read < $sec_size) {
|
|
# Last sector
|
|
$done = 1;
|
|
}
|
|
|
|
# Keep track of file size.
|
|
$file_length += $bytes_read;
|
|
|
|
# Pop a sector from the free sector list.
|
|
my $next_sec;
|
|
if (scalar @free_secs) {
|
|
$next_sec = pop @free_secs;
|
|
print "Next free sector is trk $next_sec->{'trk'} sec $next_sec->{'sec'}\n" if $debug;
|
|
# Push it onto the used sector list.
|
|
push @used_secs, { 'trk' => $next_sec->{'trk'}, 'sec' => $next_sec->{'sec'} };
|
|
|
|
# Write the data to the next sector.
|
|
print "Writing trk $next_sec->{'trk'} sec $next_sec->{'sec'}\n" if $debug;
|
|
if (!wts($dskfile, $next_sec->{'trk'}, $next_sec->{'sec'}, $buf)) {
|
|
print "Failed to write sector $next_sec->{'trk'} $next_sec->{'sec'}!\n";
|
|
}
|
|
$sectors_used++;
|
|
} else {
|
|
# Disk full.
|
|
print "DISK FULL!\n";
|
|
$error = 1;
|
|
$done = 1;
|
|
}
|
|
}
|
|
print sprintf("sectors_used=%04x\n", $sectors_used);
|
|
print sprintf("num_used_secs=%d\n", scalar @used_secs);
|
|
|
|
# Number of tslists is number of sectors used / 121.
|
|
my $num_tslists = ceil($sectors_used / 121);
|
|
print "Need $num_tslists tslist sector(s)\n" if $debug;
|
|
|
|
# Create t/s list(s).
|
|
my $first_tslist_trk = 0;
|
|
my $first_tslist_sec = 0;
|
|
|
|
my @tslist_secs = ();
|
|
my $cur_tslist = 1;
|
|
for (my $ts = 0; $ts < $num_tslists; $ts++) {
|
|
my $next_sec;
|
|
if (scalar @free_secs) {
|
|
$next_sec = pop @free_secs;
|
|
print "Next free sector is trk $next_sec->{'trk'} sec $next_sec->{'sec'}\n" if $debug;
|
|
if ($cur_tslist++ == 1) {
|
|
$first_tslist_trk = $next_sec->{'trk'};
|
|
$first_tslist_sec = $next_sec->{'sec'};
|
|
}
|
|
|
|
print "Writing tslist $ts\n" if $debug;
|
|
my $next_tslist_trk = 0x00;
|
|
my $next_tslist_sec = 0x00;
|
|
if ($ts < $num_tslists) {
|
|
$next_tslist_trk = $free_secs[0]->{'trk'};
|
|
$next_tslist_sec = $free_secs[0]->{'sec'};
|
|
}
|
|
my $soffset = pack "CCC", (0x00, 0x00, 0x00);
|
|
if ($ts > 0) {
|
|
# Calculate soffset for this sector.
|
|
my $off = $ts * 121;
|
|
my $of1 = ($off & 0xff0000) >> 16;
|
|
my $of2 = ($off & 0x00ff00) >> 8;
|
|
my $of3 = $off & 0x0000ff;
|
|
$soffset = pack "CCC", ($of1, $of2, $of3);
|
|
}
|
|
# Make data for this tslist sector -- hunks of 121 t/s pairs.
|
|
#print sprintf("\*\*\*\* num_used_secs=%d\n", scalar @used_secs);
|
|
#my @temp_used_secs = map { [@$_] } @used_secs;
|
|
#my @tsl = splice @temp_used_secs, ($ts * 121), 121;
|
|
#print sprintf("\*\*\*\* num_used_secs=%d\n", scalar @used_secs);
|
|
#print sprintf("num_secs_in_tsl_tsl=%d\n", scalar @tsl);
|
|
my @tsl = ();
|
|
for (my $cur_ts = $ts * 121; $cur_ts < ($ts * 121) + 121; $cur_ts++) {
|
|
print "cur_ts=$cur_ts\n";
|
|
last if $cur_ts > scalar @used_secs;
|
|
print "tsl trk $used_secs[$cur_ts]->{'trk'} sec $used_secs[$cur_ts]->{'sec'}\n";
|
|
push @tsl, { 'trk' => $used_secs[$cur_ts]->{'trk'}, 'sec' => $used_secs[$cur_ts]->{'sec'} };
|
|
}
|
|
|
|
my $tslst_fmt = 'C' x 242;
|
|
my $tslist = pack $tslst_fmt, @tsl;
|
|
my $tslist_buf = pack "a$sec_size", pack $tslist_fmt_tmpl, ($next_tslist_trk, $next_tslist_sec, $soffset, $tslist);
|
|
|
|
print "Writing tslist\n" if $debug;
|
|
if (!wts($dskfile, $next_sec->{'trk'}, $next_sec->{'sec'}, $tslist_buf)) {
|
|
print "Failed to write catalog sector $cat_trk $cat_sec!\n";
|
|
}
|
|
push @tslist_secs, { 'trk' => $next_sec->{'trk'}, 'sec' => $next_sec->{'sec'} };
|
|
} else {
|
|
print "DISK FULL!\n";
|
|
return;
|
|
}
|
|
}
|
|
print "first tslist trk $first_tslist_trk sec $first_tslist_sec\n" if $debug;
|
|
|
|
dump_sec($cat_buf) if $debug;
|
|
my @bytes = unpack "C*", $cat_buf;
|
|
|
|
# Create file descriptive entry in catalog.
|
|
|
|
# Set first tslist track.
|
|
$bytes[11 + (($empty_file_entry - 1) * 35)] = $first_tslist_trk;
|
|
# Set first tslist sector.
|
|
$bytes[12 + (($empty_file_entry - 1) * 35)] = $first_tslist_sec;
|
|
|
|
# Handle file type.
|
|
my $file_type = 0x00; # Default T
|
|
if ($mode eq "I") {
|
|
$file_type = 0x01;
|
|
} elsif ($mode eq "A") {
|
|
$file_type = 0x02;
|
|
} elsif ($mode eq "B") {
|
|
$file_type = 0x04;
|
|
}
|
|
|
|
# Set file type
|
|
$bytes[13 + (($empty_file_entry - 1) * 35)] = $file_type;
|
|
|
|
# Handle Filename
|
|
my $fname_start = 14 + (($empty_file_entry - 1) * 35);
|
|
print sprintf("fname_start=%02x\n", $fname_start) if $debug;
|
|
|
|
# Put in the filename
|
|
for (my $i = 0; $i < length($filename); $i++) {
|
|
# Set the high bit
|
|
$bytes[$fname_start + $i] = ord(substr($filename, $i, 1)) | 0x80;
|
|
}
|
|
# Make sure new filename is space padded
|
|
for (my $i = length($filename); $i < 30; $i++) {
|
|
# 0xa0 is Apple II space (high bit set)
|
|
$bytes[$fname_start + $i] = 0xa0;
|
|
}
|
|
|
|
print sprintf("sectors_used=%04x\n", $sectors_used);
|
|
my $file_secs_lo = $sectors_used & 0x00ff;
|
|
print sprintf("file_secs_lo=%02x\n", $file_secs_lo);
|
|
my $file_secs_hi = ($sectors_used & 0xff00) >> 8;
|
|
print sprintf("file_secs_hi=%02x\n", $file_secs_hi);
|
|
|
|
print sprintf("num_used_secs=%d\n", scalar @used_secs);
|
|
|
|
# Set file length in sectors.
|
|
my $file_length_secs = ceil($file_length / $sec_size);
|
|
$bytes[44 + (($empty_file_entry - 1) * 35)] = $file_secs_lo;
|
|
$bytes[45 + (($empty_file_entry - 1) * 35)] = $file_secs_hi;
|
|
|
|
# Re-pack the data in the catalog sector.
|
|
$cat_buf = pack "a$sec_size", pack "C*", @bytes;
|
|
|
|
dump_sec($cat_buf);
|
|
# Write back catalog sector with new file descriptive entry.
|
|
print "Writing catalog sector $cat_trk $cat_sec\n" if $debug;
|
|
if (!wts($dskfile, $cat_trk, $cat_sec, $cat_buf)) {
|
|
print "Failed to write catalog sector $cat_trk $cat_sec!\n";
|
|
}
|
|
|
|
print sprintf("num_used_secs=%d\n", scalar @used_secs);
|
|
|
|
# Mark sectors used.
|
|
my ($trk_num_1st_cat_sec, $sec_num_1st_cat_sec, $rel_num_dos, $dsk_vol_num, $max_tslist_secs, $last_trk_secs_alloc, $dir_trk_alloc, $num_trks_dsk, $num_secs_dsk, $num_bytes_sec, $bit_map_free_secs) = get_vtoc_sec($dskfile);
|
|
|
|
my $tmpl = '';
|
|
for (my $t = $min_trk; $t <= $max_trk; $t++) {
|
|
$tmpl .= $bit_map_free_sec_tmpl;
|
|
}
|
|
|
|
print "tmpl=$tmpl\n" if $debug;
|
|
my @flds = unpack $tmpl, $bit_map_free_secs;
|
|
|
|
print sprintf("num_used_secs=%d\n", scalar @used_secs);
|
|
|
|
# Mark sectors used
|
|
foreach my $sec (@used_secs) {
|
|
#next unless defined $sec;
|
|
next unless defined $sec->{'trk'};
|
|
#next if $sec->{'trk'} == 0 && $sec->{'sec'} == 0;
|
|
print "Marking trk $sec->{'trk'} sec $sec->{'sec'} used\n" if $debug;
|
|
$flds[$sec->{'trk'}] &= ~(1 << $sec->{'sec'});
|
|
}
|
|
# Mark tslist sectors used.
|
|
foreach my $sec (@tslist_secs) {
|
|
print "Marking tslist sector used trk $sec->{'trk'} sec $sec->{'sec'}\n" if $debug;
|
|
$flds[$sec->{'trk'}] &= ~(1 << $sec->{'sec'});
|
|
}
|
|
|
|
$bit_map_free_secs = pack $tmpl, @flds;
|
|
|
|
# Write back vtoc
|
|
if (!write_vtoc($dskfile, $trk_num_1st_cat_sec, $sec_num_1st_cat_sec, $rel_num_dos, $dsk_vol_num, $max_tslist_secs, $last_trk_secs_alloc, $dir_trk_alloc, $num_trks_dsk, $num_secs_dsk, $num_bytes_sec, $bit_map_free_secs)) {
|
|
print "I/O ERROR!\n";
|
|
}
|
|
|
|
close $ifh;
|
|
} else {
|
|
print "Can't open $filename\n";
|
|
}
|
|
} else {
|
|
print "DISK FULL\n";
|
|
}
|
|
} else {
|
|
print "DISK FULL\n";
|
|
}
|
|
}
|
|
|
|
#
|
|
# Undelete a file
|
|
#
|
|
sub undelete_file {
|
|
my ($dskfile, $filename, $dbg) = @_;
|
|
|
|
$debug = 1 if (defined $dbg && $dbg);
|
|
|
|
print "dskfile=$dskfile filename=$filename\n";
|
|
|
|
return 1;
|
|
}
|
|
|
|
#
|
|
# Initialize a disk image.
|
|
#
|
|
sub init {
|
|
my ($dskfile, $volume, $dbg) = @_;
|
|
|
|
$debug = 1 if (defined $dbg && $dbg);
|
|
|
|
print "dskfile=$dskfile volume=$volume\n";
|
|
|
|
return 1;
|
|
}
|
|
|
|
1;
|
|
|