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debian-cd-clone/etchnhalf/tools/make_disc_trees.pl

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#!/usr/bin/perl -w
#
# make_disc_trees
#
# From the list of packages we have, lay out the CD trees
use strict;
use Digest::MD5;
use File::stat;
use File::Find;
use Compress::Zlib;
my %pkginfo;
my ($basedir, $mirror, $tdir, $codename, $archlist, $mkisofs, $maxcds, $extranonfree);
my $mkisofs_opts = "";
my $mkisofs_dirs = "";
my (@arches, @arches_nosrc, @overflowlist, @pkgs_added);
my (@exclude_packages, @unexclude_packages, @excluded_package_list);
undef @pkgs_added;
undef @exclude_packages;
undef @unexclude_packages;
undef @excluded_package_list;
$basedir = shift;
$mirror = shift;
$tdir = shift;
$codename = shift;
$archlist = shift;
$mkisofs = shift;
my $security = $ENV{'SECURITY'} || $mirror;
my $localdebs = $ENV{'LOCALDEBS'} || $mirror;
my $iso_blksize = 2048;
my $log_opened = 0;
my $old_split = $/;
my $symlink_farm = $ENV{'SYMLINK'} || 0;
my $link_verbose = $ENV{'VERBOSE'} || 0;
my $link_copy = $ENV{'COPYLINK'} || 0;
require "$basedir/tools/link.pl";
if (defined($ENV{'MAXCDS'})) {
$maxcds = $ENV{'MAXCDS'};
} else {
$maxcds = 0;
}
if (defined($ENV{'EXTRANONFREE'})) {
$extranonfree = $ENV{'EXTRANONFREE'};
} else {
$extranonfree = 0;
}
my $list = "$tdir/list";
my $list_ex = "$tdir/list.exclude";
my $bdir = "$tdir/$codename";
my $log = "$bdir/make_disc_tree.log";
open(LOG, ">> $log") or die ("Can't open logfile $log for writing: $!\n");
foreach my $arch (split(' ', $archlist)) {
push(@arches, $arch);
if (! ($arch eq "source")) {
push(@arches_nosrc, $arch);
}
# Pre-cache all the package information that we need
load_packages_cache($arch);
}
my $disknum = 1;
my $max_done = 0;
my $size_check = "";
# Constants used for space calculations
my $MiB = 1048576;
my $MB = 1000000;
my $blocksize = 2048;
my ($maxdiskblocks, $diskdesc);
my $cddir;
my $disktype = $ENV{'DISKTYPE'};
my $size_swap_check;
my $hfs_extra = 0;
my $hfs_mult = 1;
# And count how many packages added since the last size check was done
# - the estimation code is getting very accurate, so let's reduce the
# number of times we fork mkisofs
my $count_since_last_check = 0;
my $size_check_period = 10;
my $pkgs_this_cd = 0;
my $pkgs_done = 0;
my $size = 0;
my $guess_size = 0;
my @overflowpkg;
my $mkisofs_check = "$mkisofs -r -print-size -quiet";
my $debootstrap_script = "";
if (defined ($ENV{'DEBOOTSTRAP_SCRIPT'})) {
$debootstrap_script = $ENV{'DEBOOTSTRAP_SCRIPT'};
}
chdir $bdir;
# Size calculation is slightly complicated:
#
# 1. At the start, ask mkisofs for a size so far (including all the
# stuff in the initial tree like docs and boot stuff
#
# 2. After that, add_packages will tell us the sizes of the files it
# has added. This will not include directories / metadata so is
# only a rough guess, but it's a _cheap_ guess
#
# 3. Once we get >90% of the max size we've been configured with,
# start asking mkisofs after each package addition. This will
# be slow, but we want to be exact at the end
$cddir = "$bdir/CD$disknum";
get_disc_size();
# Space calculation for extra HFS crap
if ($archlist =~ /m68k/ || $archlist =~ /powerpc/) {
$hfs_mult = 1.2;
$hfs_extra = int($maxdiskblocks * 8 / $blocksize);
print LOG "arches require HFS hybrid, multiplying sizes by $hfs_mult and marking $hfs_extra blocks for HFS use\n";
}
print "Starting to lay out packages into $disktype ($diskdesc) images: $maxdiskblocks 2K-blocks maximum per image\n";
open(INLIST, "$bdir/packages") or die "No packages file!\n";
while (defined (my $pkg = <INLIST>)) {
chomp $pkg;
$cddir = "$bdir/CD$disknum";
my $opt;
if (! -d $cddir) {
if (($maxcds > 0 ) && ($disknum > $maxcds)) {
print LOG "Disk $disknum is beyond the configured MAXCDS of $maxcds; exiting now...\n";
$max_done = 1;
last;
}
print LOG "Starting new disc $disknum at " . `date` . "\n";
start_disc();
print " Placing packages into image $disknum\n";
if ( -e "$bdir/$disknum.mkisofs_opts" ) {
open(OPTS, "<$bdir/$disknum.mkisofs_opts");
while (defined($opt = <OPTS>)) {
chomp $opt;
$mkisofs_opts = "$mkisofs_opts $opt";
}
close(OPTS);
} else {
$mkisofs_opts = "";
}
if ( -e "$bdir/$disknum.mkisofs_dirs" ) {
open(OPTS, "<$bdir/$disknum.mkisofs_dirs");
while (defined($opt = <OPTS>)) {
chomp $opt;
$mkisofs_dirs = "$mkisofs_dirs $opt";
}
close(OPTS);
} else {
$mkisofs_dirs = "";
}
$size_check = "$mkisofs_check $mkisofs_opts $mkisofs_dirs";
$size=`$size_check $cddir`;
chomp $size;
$size += $hfs_extra;
print LOG "CD $disknum: size is $size before starting to add packages\n";
$pkgs_this_cd = 0;
# If we have some unexcludes for this disc and have already
# previously excluded some packages, check now if the two
# lists intersect and we should re-include some packages
if (scalar @unexclude_packages && scalar @excluded_package_list) {
foreach my $reinclude_pkg (@excluded_package_list) {
my ($arch, $component, $pkgname) = split /:/, $reinclude_pkg;
foreach my $entry (@unexclude_packages) {
if (($pkgname =~ /^\Q$entry\E$/m)) {
print LOG "Re-including $reinclude_pkg due to match on \"\^$entry\$\"\n";
$guess_size = int($hfs_mult * add_packages($cddir, $reinclude_pkg));
$size += $guess_size;
print LOG "CD $disknum: GUESS_TOTAL is $size after adding $reinclude_pkg\n";
$pkgs_this_cd++;
$pkgs_done++;
}
}
}
}
while (scalar @overflowlist) {
my $overflowpkg = pop @overflowlist;
print LOG "Adding a package that failed on the last disc: $overflowpkg\n";
$guess_size = int($hfs_mult * add_packages($cddir, $overflowpkg));
$size += $guess_size;
print LOG "CD $disknum: GUESS_TOTAL is $size after adding $overflowpkg\n";
$pkgs_this_cd++;
$pkgs_done++;
}
} # end of creating new CD dir
if (should_exclude_package($pkg)) {
push(@excluded_package_list, $pkg);
} elsif (should_start_extra_nonfree($pkg)) {
print LOG "Starting on extra non-free CDs\n";
finish_disc($cddir, "");
# And reset, to start the next disc
$size = 0;
$disknum++;
undef(@pkgs_added);
# Put this package first on the next disc
push (@overflowlist, $pkg);
} else {
$guess_size = int($hfs_mult * add_packages($cddir, $pkg));
$size += $guess_size;
push (@pkgs_added, $pkg);
print LOG "CD $disknum: GUESS_TOTAL is $size after adding $pkg\n";
if (($size > $maxdiskblocks) ||
(($size > $size_swap_check) &&
($count_since_last_check > $size_check_period))) {
$count_since_last_check = 0;
$size = `$size_check $cddir`;
chomp $size;
print LOG "CD $disknum: Real current size is $size blocks after adding $pkg\n";
}
if ($size > $maxdiskblocks) {
while ($size > $maxdiskblocks) {
$pkg = pop(@pkgs_added);
print LOG "CD $disknum over-full ($size > $maxdiskblocks). Rollback!\n";
$guess_size = int($hfs_mult * add_packages("--rollback", $cddir, $pkg));
$size=`$size_check $cddir`;
chomp $size;
print LOG "CD $disknum: Real current size is $size blocks after rolling back $pkg\n";
# Put this package first on the next disc
push (@overflowlist, $pkg);
}
finish_disc($cddir, "");
# And reset, to start the next disc
$size = 0;
$disknum++;
undef(@pkgs_added);
} else {
$pkgs_this_cd++;
$pkgs_done++;
$count_since_last_check++;
}
}
}
close(INLIST);
if ($max_done == 0) {
finish_disc($cddir, " (not)");
}
print LOG "Finished: $pkgs_done packages placed\n";
print "Finished: $pkgs_done packages placed\n";
system("date >> $log");
close(LOG);
#############################################
#
# Local helper functions
#
#############################################
sub load_packages_cache {
my $arch = shift;
my @pkglist;
my ($p);
$ENV{'LC_ALL'} = 'C'; # Required since apt is now translated
$ENV{'ARCH'} = $arch;
open(INLIST, "$bdir/packages.$arch")
or die "No packages file $bdir/packages.$arch for $arch!\n";
while (defined (my $pkg = <INLIST>)) {
chomp $pkg;
my ($junk, $component, $pkgname) = split /:/, $pkg;
push @pkglist, $pkgname;
}
close INLIST;
$/ = ''; # Browse by paragraph
while (@pkglist) {
my (@pkg) = splice(@pkglist,0,200);
if ($arch eq "source") {
open (LIST, "$basedir/tools/apt-selection cache showsrc @pkg |")
|| die "Can't fork : $!\n";
} else {
open (LIST, "$basedir/tools/apt-selection cache show @pkg |")
|| die "Can't fork : $!\n";
}
while (defined($_ = <LIST>)) {
m/^Package: (\S+)/m and $p = $1;
$pkginfo{$arch}{$p} = $_;
}
}
$/ = $old_split; # Browse by line again
}
sub should_start_extra_nonfree {
my $pkg = shift;
my ($arch, $component, $pkgname) = split /:/, $pkg;
if ( ($component eq "non-free") && $extranonfree) {
$extranonfree = 0; # Flag that we don't need to start new next time!
return 1;
}
return 0;
}
sub should_exclude_package {
my $pkg = shift;
my ($arch, $component, $pkgname) = split /:/, $pkg;
my $should_exclude = 0;
foreach my $entry (@exclude_packages) {
if (($pkgname =~ /^\Q$entry\E$/m)) {
print LOG "Excluding $pkg due to match on \"\^$entry\$\"\n";
$should_exclude++;
}
}
if ($should_exclude) {
# Double-check that we're not being asked to include *and*
# exclude the package at the same time. If so, complain and
# bail out
foreach my $entry (@unexclude_packages) {
if (($pkgname =~ /^\Q$entry\E$/m)) {
print LOG "But ALSO asked to unexclude $pkg due to match on \"\^$entry\$\"\n";
print LOG "Make your mind up! Bailing out...\n";
die "Incompatible exclude/unexclude entries for $pkg...\n";
}
}
return 1;
}
return 0;
}
sub check_base_installable {
my $arch = shift;
my $cddir = shift;
my $ok = 0;
my (%on_disc, %exclude);
my $packages_file = "$cddir/dists/$codename/main/binary-$arch/Packages";
my $p;
open (PLIST, $packages_file)
|| die "Can't open Packages file $packages_file : $!\n";
while (defined($p = <PLIST>)) {
chomp $p;
$p =~ m/^Package: (\S+)/ and $on_disc{$1} = $1;
}
close PLIST;
$packages_file = "$cddir/dists/$codename/local/binary-$arch/Packages";
if (open (PLIST, $packages_file)) {
while (defined($p = <PLIST>)) {
chomp $p;
$p =~ m/^Package: (\S+)/ and $on_disc{$1} = $1;
}
close PLIST;
}
if (defined($ENV{'BASE_EXCLUDE'})) {
open (ELIST, $ENV{'BASE_EXCLUDE'})
|| die "Can't open base_exclude file $ENV{'BASE_EXCLUDE'} : $!\n";
while (defined($p = <ELIST>)) {
chomp $p;
$exclude{$p} = $p;
}
close ELIST;
}
open (DLIST, "debootstrap --arch $arch --print-debs $codename $tdir/debootstrap_tmp file:$mirror $debootstrap_script 2>/dev/null | tr ' ' '\n' |")
|| die "Can't fork debootstrap : $!\n";
while (defined($p = <DLIST>)) {
chomp $p;
if (length $p > 1) {
if (!defined($on_disc{$p})) {
if (defined($exclude{$p})) {
print LOG "Missing debootstrap-required $p but included in $ENV{'BASE_EXCLUDE'}\n";
} else {
$ok++;
print LOG "Missing debootstrap-required $p\n";
}
}
}
}
close DLIST;
system("rm -rf $tdir/debootstrap_tmp");
return $ok;
}
# If missing, create an empty local Packages file for an architecture.
# Only create an uncompressed Packages file; the call to recompress will
# create the compressed version.
sub add_missing_Packages {
my ($filename);
$filename = $File::Find::name;
if ((-d "$_") && ($filename =~ m/\/main\/binary-[^\/]*$/)) {
if ((-f "$_/Packages") && (! -d "../local/$_/")) {
mkdir "../local/$_/" || die "Error creating directory local/$_: $!\n";
open(LPFILE, ">../local/$_/Packages") or die "Error creating local/$_/Packages: $!\n";
close LPFILE;
print " Created empty Packages file for local/$_\n";
}
}
}
sub md5_file {
my $filename = shift;
my ($md5, $st);
open(MD5FILE, $filename) or die "Can't open '$filename': $!\n";
binmode(MD5FILE);
$md5 = Digest::MD5->new->addfile(*MD5FILE)->hexdigest;
close(MD5FILE);
$st = stat($filename) || die "Stat error on '$filename': $!\n";
return ($md5, $st->size);
}
sub recompress {
# Recompress the Packages and Sources files; workaround for bug
# #402482
my ($filename);
$filename = $File::Find::name;
if ($filename =~ m/\/.*\/(Packages|Sources)$/o) {
system("gzip -9c < $_ >$_.gz");
}
}
sub md5_files_for_release {
my ($md5, $size, $filename);
$filename = $File::Find::name;
if ($filename =~ m/\/.*\/(Packages|Sources|Release)/o) {
$filename =~ s/^\.\///g;
($md5, $size) = md5_file($_);
printf RELEASE " %s %8d %s\n", $md5, $size, $filename;
}
}
sub md5_files_for_md5sum {
my ($md5, $size, $filename);
$filename = $File::Find::name;
if (-f $_) {
($md5, $size) = md5_file($_);
printf MD5LIST "%s %s\n", $md5, $filename;
}
}
sub get_disc_size {
my $hook;
my $error = 0;
my $reserved = 0;
if (defined($ENV{'RESERVED_BLOCKS_HOOK'})) {
$hook = $ENV{'RESERVED_BLOCKS_HOOK'};
print " Calling reserved_blocks hook: $hook\n";
$reserved = `$hook $tdir $mirror $disknum $cddir \"$archlist\"`;
chomp $reserved;
if ($reserved eq "") {
$reserved = 0;
}
print " Reserving $reserved blocks on CD $disknum\n";
}
# Calculate the maximum number of 2K blocks in the output images
if ($disktype eq "BC") {
$maxdiskblocks = int(680 * $MB / $blocksize) - $reserved;
$diskdesc = "businesscard";
} elsif ($disktype eq "NETINST") {
$maxdiskblocks = int(680 * $MB / $blocksize) - $reserved;
$diskdesc = "netinst";
} elsif ($disktype =~ /CD$/) {
$maxdiskblocks = int(680 * $MB / $blocksize) - $reserved;
$diskdesc = "650MiB CD";
} elsif ($disktype eq "CD700") {
$maxdiskblocks = int(737 * $MB / $blocksize) - $reserved;
$diskdesc = "700MiB CD";
} elsif ($disktype eq "DVD") {
$maxdiskblocks = int(4700 * $MB / $blocksize) - $reserved;
$diskdesc = "4.7GB DVD";
} elsif ($disktype eq "DLDVD") {
$maxdiskblocks = int(8500 * $MB / $blocksize) - $reserved;
$diskdesc = "8.5GB DVD";
} elsif ($disktype eq "BD") {
# Useable capacity, found by checking some disks
$maxdiskblocks = 11826000 - $reserved;
$diskdesc = "25GB BD";
} elsif ($disktype eq "DLBD") {
# Useable capacity, found by checking some disks
$maxdiskblocks = 23652352 - $reserved;
$diskdesc = "50GB DLBD";
} elsif ($disktype eq "CUSTOM") {
$maxdiskblocks = $ENV{'CUSTOMSIZE'} - $reserved ||
die "Need to specify a custom size for the CUSTOM disktype\n";
$diskdesc = "User-supplied size";
}
$ENV{'MAXDISKBLOCKS'} = $maxdiskblocks;
$ENV{'DISKDESC'} = $diskdesc;
# How full should we let the disc get before we stop estimating and
# start running mkisofs?
$size_swap_check = $maxdiskblocks - (40 * $MB / $blocksize);
}
sub start_disc {
my $error = 0;
$error = system("$basedir/tools/start_new_disc $basedir $mirror $tdir $codename \"$archlist\" $disknum");
if ($error != 0) {
die " Failed to start disc $disknum, error $error\n";
}
get_disc_size();
# Grab all the early stuff, apart from dirs that will change later
print " Starting the md5sum.txt file\n";
chdir $cddir;
system("find . -type f | grep -v -e ^\./\.disk -e ^\./dists | xargs md5sum >> md5sum.txt");
chdir $bdir;
$mkisofs_opts = "";
$mkisofs_dirs = "";
undef @exclude_packages;
undef @unexclude_packages;
if (defined ($ENV{"EXCLUDE"})) {
my $excl_file = $ENV{"EXCLUDE"};
print LOG "Adding excludes from $excl_file\n";
open (EXCLUDE_FILE, "< $excl_file") || die "Can't open exclude file $excl_file: $!\n";
while (defined (my $excl_pkg = <EXCLUDE_FILE>)) {
chomp $excl_pkg;
push(@exclude_packages, $excl_pkg);
}
close (EXCLUDE_FILE);
}
if (defined ($ENV{"EXCLUDE$disknum"})) {
my $excl_file = $ENV{"EXCLUDE$disknum"};
print LOG "Adding excludes from $excl_file\n";
open (EXCLUDE_FILE, "< $excl_file") || die "Can't open exclude file $excl_file: $!\n";
while (defined (my $excl_pkg = <EXCLUDE_FILE>)) {
chomp $excl_pkg;
push(@exclude_packages, $excl_pkg);
}
close (EXCLUDE_FILE);
}
if (defined ($ENV{"UNEXCLUDE$disknum"})) {
my $excl_file = $ENV{"UNEXCLUDE$disknum"};
print LOG "Adding unexcludes from $excl_file\n";
open (EXCLUDE_FILE, "< $excl_file") || die "Can't open unexclude file $excl_file: $!\n";
while (defined (my $excl_pkg = <EXCLUDE_FILE>)) {
chomp $excl_pkg;
push(@unexclude_packages, $excl_pkg);
}
close (EXCLUDE_FILE);
}
}
sub finish_disc {
my $cddir = shift;
my $not = shift;
my $archok = 0;
my $ok = 0;
my $bytes = 0;
my $ctx;
my $hook;
my $error = 0;
if (defined($ENV{'DISC_FINISH_HOOK'})) {
$hook = $ENV{'DISC_FINISH_HOOK'};
print " Calling disc_finish hook: $hook\n";
$error = system("$hook $tdir $mirror $disknum $cddir \"$archlist\"");
$error == 0 || die "DISC_FINISH_HOOK failed with error $error\n";
}
if (($disknum == 1) && !($archlist eq "source") && !($disktype eq "BC")) {
foreach my $arch (@arches_nosrc) {
print " Checking base is installable for $arch\n";
$archok = check_base_installable($arch, $cddir);
if ($archok > 0) {
print " $arch is missing $archok files needed for debootstrap, look in $log for the list\n";
}
$ok += $archok;
}
if ($ok == 0) {
system("touch $cddir/.disk/base_installable");
print " Found all files needed for debootstrap for all binary arches\n";
} else {
print " $ok files missing for debootstrap, not creating base_installable\n";
if ($disktype eq "BC") {
print " This is expected - building a BC\n";
}
}
}
chdir $cddir;
# If we have a local packages directory, ensure we have a Packages file
# for all included architectures as otherwise the Release file will be
# invalid. This can happen if we do have local udebs but no local
# regular packages, or multiple architectures with not all of them
# having local packages.
if (-d "./dists/$codename/local") {
find (\&add_missing_Packages, "./dists/$codename/main/");
}
print " Finishing off the Release file\n";
chdir "dists/$codename";
open(RELEASE, ">>Release") or die "Failed to open Release file: $!\n";
print RELEASE "MD5Sum:\n";
find (\&recompress, ".");
find (\&md5_files_for_release, ".");
close(RELEASE);
chdir("../..");
print " Finishing off md5sum.txt\n";
# Just md5 the bits we won't have seen already
open(MD5LIST, ">>md5sum.txt") or die "Failed to open md5sum.txt file: $!\n";
find (\&md5_files_for_md5sum, ("./.disk", "./dists"));
close(MD5LIST);
# And sort; it should make things faster for people checking
# the md5sums, as ISO9660 dirs are sorted alphabetically
system("LANG=C sort -uk2 md5sum.txt | grep -v \./md5sum.txt > md5sum.txt.tmp");
system("mv -f md5sum.txt.tmp md5sum.txt");
chdir $bdir;
if (defined($ENV{'DISC_END_HOOK'})) {
$hook = $ENV{'DISC_END_HOOK'};
print " Calling disc_end hook: $hook\n";
$error = system("$hook $tdir $mirror $disknum $cddir \"$archlist\"");
$error == 0 || die "DISC_END_HOOK failed with error $error\n";
}
$size = `$size_check $cddir`;
chomp $size;
$bytes = $size * $blocksize;
print LOG "CD $disknum$not filled with $pkgs_this_cd packages, $size blocks, $bytes bytes\n";
print " CD $disknum$not filled with $pkgs_this_cd packages, $size blocks, $bytes bytes\n";
system("date >> $log");
}
# start of add_packages
sub msg_ap {
my $level = shift;
if (!$log_opened) {
open(AP_LOG, ">> $tdir/$codename/log.add_packages")
|| die "Can't write in $tdir/log.add_packages!\n";
}
print AP_LOG @_;
}
sub size_in_blocks {
my $size_in_bytes = shift;
return (1 + int(($size_in_bytes + $iso_blksize - 1) / $iso_blksize));
}
# From a package name and section, work out the directory where its
# corresponding Packages file should live
sub Packages_dir {
my $dir = shift;
my $file = shift;
my $section = shift;
my ($pdir, $dist);
if ($file =~ /\/main\//) {
$dist = "main";
} elsif ($file =~ /\/contrib\//) {
$dist = "contrib";
} elsif ($file =~ /\/non-free\//) {
$dist = "non-free";
} else {
$dist = "local";
}
$pdir = "$dir/dists/$codename/$dist";
if ($section eq "debian-installer") {
$pdir = "$dir/dists/$codename/$dist/debian-installer";
}
return $pdir;
}
# Dump the apt-cached data into a Packages file; make the parent dir
# for the Packages file if necesssary
sub add_Packages_entry {
my ($p, $file, $section, $pdir, $pkgfile, $gz);
my $dir = shift;
my $arch = shift;
my ($st1, $st2, $size1, $size2);
my $blocks_added = 0;
my $old_blocks = 0;
my $new_blocks = 0;
m/^Package: (\S+)/m and $p = $1;
m/^Section: (\S+)/m and $section = $1;
if ($arch eq "source") {
m/^Directory: (\S+)/mi and $file = $1;
$pdir = Packages_dir($dir, $file, $section) . "/source";
$pkgfile = "$pdir/Sources";
} else {
m/^Filename: (\S+)/mi and $file = $1;
$pdir = Packages_dir($dir, $file, $section) . "/binary-$arch";
$pkgfile = "$pdir/Packages";
}
msg_ap(0, " Adding $p to $pkgfile(.gz)\n");
if (! -d $pdir) {
system("mkdir -p $pdir");
$blocks_added++;
}
if (-e $pkgfile) {
$st1 = stat("$pkgfile");
$old_blocks = size_in_blocks($st1->size);
}
if (-e "$pkgfile.gz") {
$st1 = stat("$pkgfile.gz");
$old_blocks += size_in_blocks($st1->size);
}
open(PFILE, ">>$pkgfile");
print PFILE $_;
close(PFILE);
$gz = gzopen("$pkgfile.gz", "ab9") or die "Failed to open $pkgfile.gz: $gzerrno\n";
$gz->gzwrite($_) or die "Failed to write $pkgfile.gz: $gzerrno\n";
$gz->gzclose();
$st1 = stat("$pkgfile");
$st2 = stat("$pkgfile.gz");
$size1 = $st1->size;
$size2 = $st2->size;
$new_blocks += size_in_blocks($st1->size);
$new_blocks += size_in_blocks($st2->size);
$blocks_added += ($new_blocks - $old_blocks);
msg_ap(0, " now $size1 / $size2 bytes, $blocks_added blocks added\n");
return $blocks_added;
}
sub add_md5_entry {
my $dir = shift;
my $arch = shift;
my ($pdir, $file, $md5);
my $md5file = "$dir/md5sum.txt";
my ($st, $size);
my $p;
my $blocks_added = 0;
my $old_blocks = 0;
my $new_blocks = 0;
m/^Package: (\S+)/mi and $p = $1;
if (-e $md5file) {
$st = stat("$md5file");
$old_blocks = size_in_blocks($st->size);
}
open(MD5FILE, ">>$md5file");
if ($arch eq "source") {
m/^Directory: (\S+)/mi and $pdir = $1;
m/^ (\S+) (\S+) ((\S+).*dsc)/m and print MD5FILE "$1 ./$pdir/$3\n";
m/^ (\S+) (\S+) ((\S+).*tar.gz)/m and print MD5FILE "$1 ./$pdir/$3\n";
m/^ (\S+) (\S+) ((\S+).*diff.gz)/m and print MD5FILE "$1 ./$pdir/$3\n";
} else {
m/^Filename: (\S+)/m and $file = $1;
m/^MD5sum: (\S+)/m and print MD5FILE "$1 ./$file\n";
}
close(MD5FILE);
msg_ap(0, " Adding $p to $md5file\n");
$st = stat("$md5file");
$size = $st->size;
$new_blocks = size_in_blocks($st->size);
$blocks_added = $new_blocks - $old_blocks;
msg_ap(0, " now $size bytes, added $blocks_added blocks\n");
return $blocks_added;
}
# Roll back the results of add_Packages_entry()
sub remove_Packages_entry {
my ($p, $file, $section, $pdir, $pkgfile, $tmp_pkgfile, $match, $gz);
my $dir = shift;
my $arch = shift;
my ($st1, $st2, $size1, $size2);
my $blocks_removed = 0;
my $old_blocks = 0;
my $new_blocks = 0;
m/^Package: (\S+)/m and $p = $1;
m/^Section: (\S+)/m and $section = $1;
if ($arch eq "source") {
m/^Directory: (\S+)/mi and $file = $1;
$pdir = Packages_dir($dir, $file, $section) . "/source";
$pkgfile = "$pdir/Sources";
} else {
m/^Filename: (\S+)/mi and $file = $1;
$pdir = Packages_dir($dir, $file, $section) . "/binary-$arch";
$pkgfile = "$pdir/Packages";
}
if (-e $pkgfile) {
$st1 = stat("$pkgfile");
$old_blocks += size_in_blocks($st1->size);
}
if (-e "$pkgfile.gz") {
$st2 = stat("$pkgfile.gz");
$old_blocks += size_in_blocks($st2->size);
}
$tmp_pkgfile = "$pkgfile" . ".rollback";
msg_ap(0, " Removing $p from $pkgfile(.gz)\n");
open(IFILE, "<$pkgfile");
open(OFILE, ">>$tmp_pkgfile");
$gz = gzopen("$pkgfile.gz", "wb9");
$/ = ''; # Browse by paragraph
while (defined($match = <IFILE>)) {
if (! ($match =~ /^Package: \Q$p\E$/m)) {
print OFILE $match;
$gz->gzwrite($match) or die "Failed to write $pkgfile.gz: $gzerrno\n";
}
}
$gz->gzclose();
close(IFILE);
close(OFILE);
rename $tmp_pkgfile, $pkgfile;
$st1 = stat("$pkgfile");
$st2 = stat("$pkgfile.gz");
$size1 = $st1->size;
$size2 = $st2->size;
$new_blocks += size_in_blocks($st1->size);
$new_blocks += size_in_blocks($st2->size);
$blocks_removed += ($old_blocks - $new_blocks);
msg_ap(0, " now $size1 / $size2 bytes, $blocks_removed blocks removed\n");
return $blocks_removed;
}
sub remove_md5_entry {
my $dir = shift;
my $arch = shift;
my ($pdir, $file, $md5, $match, $present);
my $md5file = "$dir/md5sum.txt";
my $tmp_md5file = "$dir/md5sum.txt.tmp";
my @fileslist;
my ($st, $size, $p);
my $blocks_removed = 0;
my $old_blocks = 0;
my $new_blocks = 0;
$/ = $old_split; # Browse by line again
m/^Package: (\S+)/mi and $p = $1;
if ($arch eq "source") {
m/^Directory: (\S+)/mi and $pdir = $1;
m/^ (\S+) (\S+) ((\S+).*dsc)/m and push(@fileslist, "$1 ./$pdir/$3");
m/^ (\S+) (\S+) ((\S+).*diff.gz)/m and push(@fileslist, "$1 ./$pdir/$3");
m/^ (\S+) (\S+) ((\S+).*tar.gz)/m and push(@fileslist, "$1 ./$pdir/$3");
} else {
m/^Filename: (\S+)/m and $file = $1;
m/^MD5Sum: (\S+)/mi and push(@fileslist, "$1 ./$file");
}
if (-e $md5file) {
$st = stat("$md5file");
$old_blocks = size_in_blocks($st->size);
}
open(IFILE, "<$md5file");
open(OFILE, ">>$tmp_md5file");
while (defined($match = <IFILE>)) {
$present = 0;
foreach my $entry (@fileslist) {
if (($match =~ /\Q$entry\E$/m)) {
$present++;
}
}
if (!$present) {
print OFILE $match;
}
}
close(IFILE);
close(OFILE);
$/ = ''; # Browse by paragraph again
rename $tmp_md5file, $md5file;
msg_ap(0, " Removing $p from md5sum.txt\n");
$st = stat("$dir/md5sum.txt");
$size = $st->size;
$new_blocks = size_in_blocks($st->size);
$blocks_removed = $old_blocks - $new_blocks;
msg_ap(0, " now $size bytes, $blocks_removed blocks removed\n");
return $blocks_removed;
}
sub get_file_blocks {
my $realfile = shift;
my $st;
$st = stat($realfile) or die "unable to stat file $realfile: $!\n";
return size_in_blocks($st->size);
}
sub add_packages {
my ($p, @files, $d, $realfile, $source, $section, $name, $pkgfile, $pdir);
my $dir;
my $total_blocks = 0;
my $rollback = 0;
my $option = shift;
if ($option =~ /--rollback/) {
$rollback = 1;
$dir = shift;
} else {
$dir = $option;
}
if (! -d $dir) {
die "add_packages: $dir is not a directory ...";
}
my $pkg = shift;
my ($arch, $component, $pkgname) = split /:/, $pkg;
if ("$arch" eq "" or "$pkgname" eq "" or "$pkgname" eq "") {
die "inconsistent data passed to add_packages: $pkg\n";
}
msg_ap(0, "Looking at $pkg: arch $arch, package $pkgname, rollback $rollback\n");
$_ = $pkginfo{$arch}{$pkgname};
undef @files;
$source = $mirror;
if ($arch eq "source") {
m/^Directory: (\S+)/m and $pdir = $1;
$source=$security if $pdir=~m:updates/:;
m/^ (\S+) (\S+) ((\S+).*dsc)/m and push(@files, "$pdir/$3");
m/^ (\S+) (\S+) ((\S+).*diff.gz)/m and push(@files, "$pdir/$3");
m/^ (\S+) (\S+) ((\S+).*tar.gz)/m and push(@files, "$pdir/$3");
} else {
m/^Filename: (\S+)/mi and push(@files, $1);
$source=$security if $1=~m:updates/:;
}
if ($rollback) {
# Remove the Packages entry/entries for the specified package
$total_blocks -= remove_Packages_entry($dir, $arch, $_);
$total_blocks -= remove_md5_entry($dir, $arch, $_);
foreach my $file (@files) {
my $missing = 0;
# Count how big the file is we're removing, for checking if the disc is full
if (! -e "$source/$file") {
msg_ap(0, "Can't find $file in the main archive, trying local\n");
if (-e "$localdebs/$file") {
$source = $localdebs;
} else {
die "$file not found under either $source or $localdebs\n";
}
}
$realfile = real_file ("$source/$file");
$total_blocks -= get_file_blocks($realfile);
# Remove the link
unlink ("$dir/$file") || msg_ap(0, "Couldn't delete file $dir/$file\n");
msg_ap(0, " Rollback: removed $dir/$file\n");
}
} else {
$total_blocks += add_Packages_entry($dir, $arch, $_);
$total_blocks += add_md5_entry($dir, $arch, $_);
foreach my $file (@files) {
# And put the file in the CD tree (with a (hard) link)
if (! -e "$source/$file") {
msg_ap(0, "Can't find $file in the main archive, trying local\n");
if (-e "$localdebs/$file") {
$source = $localdebs;
} else {
die "$file not found under either $source or $localdebs\n";
}
}
$realfile = real_file ("$source/$file");
if (! -e "$dir/$file") {
# Count how big the file is, for checking if the disc
# is full. ONLY do this if the file is not already
# linked in - consider binary-all packages on a
# multi-arch disc
$total_blocks += get_file_blocks($realfile);
$total_blocks += good_link ($realfile, "$dir/$file");
msg_ap(0, " Linked $dir/$file\n");
} else {
msg_ap(0, " $dir/$file already linked in\n");
}
}
}
# close LIST or die "Something went wrong with apt-cache : $@ ($!)\n";
msg_ap(0, " size $total_blocks\n");
$/ = $old_split; # Return to line-orientation
return $total_blocks;
}
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