diff options
Diffstat (limited to 'perl-install/loopback.pm')
-rw-r--r-- | perl-install/loopback.pm | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/perl-install/loopback.pm b/perl-install/loopback.pm deleted file mode 100644 index 89b0072b9..000000000 --- a/perl-install/loopback.pm +++ /dev/null @@ -1,127 +0,0 @@ -package loopback; # $Id$ - -use diagnostics; -use strict; - -#-###################################################################################### -#- misc imports -#-###################################################################################### -use MDK::Common::System; -use common; -use partition_table qw(:types); -use commands; -use fs; -use fsedit; -use log; - - -sub carryRootLoopback { - my ($part) = @_; - $_->{mntpoint} eq '/' and return 1 foreach @{$part->{loopback} || []}; - 0; -} - -sub check_circular_mounts { - my ($hd, $part, $all_hds) = @_; - - my $fstab = [ fsedit::get_all_fstab($all_hds), $part ]; # no pb if $part is already in $all_hds - - my $base_mntpoint = $part->{mntpoint}; - my $check; $check = sub { - my ($part, @seen) = @_; - push @seen, $part->{mntpoint} || return; - @seen > 1 && $part->{mntpoint} eq $base_mntpoint and die _("Circular mounts %s\n", join(", ", @seen)); - if (my $part = fs::up_mount_point($part->{mntpoint}, $fstab)) { - #- '/' carrier is a special case, it will be mounted first - $check->($part, @seen) if !carryRootLoopback($part); - } - if (isLoopback($part)) { - $check->($part->{loopback_device}, @seen); - } - }; - $check->($part) if !($base_mntpoint eq '/' && isLoopback($part)); #- '/' is a special case, no loop check -} - -sub carryRootCreateSymlink { - my ($part, $prefix) = @_; - - carryRootLoopback($part) or return; - - my $mntpoint = "$prefix$part->{mntpoint}"; - unless (-e $mntpoint) { - eval { commands::mkdir_("-p", dirname($mntpoint)) }; - #- do non-relative link for install, should be changed to relative link before rebooting - symlink "/initrd/loopfs", $mntpoint; - - commands::mkdir_("-p", "/initrd/loopfs/lnx4win/boot"); - symlink "/initrd/loopfs/lnx4win/boot", "$prefix/boot"; - } - #- indicate kernel to keep initrd - mkdir "$prefix/initrd", 0755; -} - - -sub format_part { - my ($part, $prefix) = @_; - fs::mount_part($part->{loopback_device}, $prefix); - create($part, $prefix); - fs::real_format_part($part); -} - -sub create { - my ($part, $prefix) = @_; - my $f = $part->{device} = "$prefix$part->{loopback_device}{mntpoint}$part->{loopback_file}"; - return if -e $f; - - eval { commands::mkdir_("-p", dirname($f)) }; - - log::l("creating loopback file $f ($part->{size} sectors)"); - - local *F; - sysopen F, $f, 2 | c::O_CREAT() or die "failed to create loopback file"; - sysseek F, ($part->{size} << 9) - 1, 0 or die "failed to create loopback file"; - syswrite F, "\0" or die "failed to create loopback file"; -} - -sub getFree { - my ($dir, $part) = @_; - my $freespace = $dir ? - 2 * (MDK::Common::System::df($dir))[1] : #- df in KiB - $part->{size}; - - $freespace - sum map { $_->{size} } @{$part->{loopback} || []}; -} - -#- returns the size of the loopback file if it already exists -#- returns -1 is the loopback file can't be used -sub verifFile { - my ($dir, $file, $part) = @_; - -e "$dir$file" and return -s "$dir$file"; - - $_->{loopback_file} eq $file and return -1 foreach @{$part->{loopback} || []}; - - undef; -} - -sub prepare_boot { - my ($prefix) = @_; - my $r = readlink "$prefix/boot"; - unlink "$prefix/boot"; - mkdir "$prefix/boot", 0755; - [$r, $prefix]; -} - -sub save_boot { - my ($loop_boot, $prefix) = @{$_[0]}; - - $loop_boot or return; - - my @files = glob_("$prefix/boot/*"); - commands::cp("-f", @files, $loop_boot) if @files; - commands::rm("-rf", "$prefix/boot"); - symlink $loop_boot, "$prefix/boot"; -} - - -1; - |