- # Linux /usr.
- if ($g->is_dir ("/etc") && $g->is_dir ("/bin") &&
- $g->is_dir ("/share") && $g->exists ("/local") &&
- !$g->is_file ("/etc/fstab")) {
- $r{content} = "linux-usr";
- goto OUT;
- }
-
- # Windows root?
- if ($g->is_file ("/AUTOEXEC.BAT") ||
- $g->is_file ("/autoexec.bat") ||
- $g->is_dir ("/Program Files") ||
- $g->is_dir ("/WINDOWS") ||
- $g->is_file ("/ntldr")) {
- $r{fstype} = "ntfs"; # XXX this is a guess
- $r{fsos} = "windows";
- $r{content} = "windows-root";
- $r{is_root} = 1;
- check_windows_root (\%r);
- goto OUT;
- }
- }
-
- OUT:
- $g->umount_all ();
- return \%r;
-}
-
-sub check_linux_root
-{
- local $_;
- my $r = shift;
-
- # Look into /etc to see if we recognise the operating system.
- if ($g->is_file ("/etc/redhat-release")) {
- $_ = $g->cat ("/etc/redhat-release");
- if (/Fedora release (\d+\.\d+)/) {
- $r->{osdistro} = "fedora";
- $r->{osversion} = "$1"
- } elsif (/(Red Hat Enterprise Linux|CentOS|Scientific Linux).*release (\d+).*Update (\d+)/) {
- $r->{osdistro} = "redhat";
- $r->{osversion} = "$2.$3";
- } elsif (/(Red Hat Enterprise Linux|CentOS|Scientific Linux).*release (\d+(?:\.(\d+))?)/) {
- $r->{osdistro} = "redhat";
- $r->{osversion} = "$2";
- } else {
- $r->{osdistro} = "redhat";
- }
- } elsif ($g->is_file ("/etc/debian_version")) {
- $_ = $g->cat ("/etc/debian_version");
- if (/(\d+\.\d+)/) {
- $r->{osdistro} = "debian";
- $r->{osversion} = "$1";
- } else {
- $r->{osdistro} = "debian";
- }
- }
-
- # Parse the contents of /etc/fstab. This is pretty vital so
- # we can determine where filesystems are supposed to be mounted.
- eval "\$_ = \$g->cat ('/etc/fstab');";
- if (!$@ && $_) {
- my @lines = split /\n/;
- my @fstab;
- foreach (@lines) {
- my @fields = split /[ \t]+/;
- if (@fields >= 2) {
- my $spec = $fields[0]; # first column (dev/label/uuid)
- my $file = $fields[1]; # second column (mountpoint)
- if ($spec =~ m{^/} ||
- $spec =~ m{^LABEL=} ||
- $spec =~ m{^UUID=} ||
- $file eq "swap") {
- push @fstab, [$spec, $file]
- }
- }
- }
- $r->{fstab} = \@fstab if @fstab;
- }
-}
-
-sub check_windows_root
-{
- local $_;
- my $r = shift;
-
- # XXX Windows version.
- # List of applications.
-}
-
-sub check_grub
-{
- local $_;
- my $r = shift;
-
- # XXX Kernel versions, grub version.
-}
-
-#print Dumper (\%fses);
-
-#----------------------------------------------------------------------
-# Now find out how many operating systems we've got. Usually just one.
-
-my %oses = ();
-
-foreach (sort keys %fses) {
- if ($fses{$_}->{is_root}) {
- my %r = (
- root => $fses{$_},
- root_device => $_
- );
- get_os_version (\%r);
- assign_mount_points (\%r);
- $oses{$_} = \%r;
- }
-}
-
-sub get_os_version
-{
- local $_;
- my $r = shift;
-
- $r->{os} = $r->{root}->{fsos} if exists $r->{root}->{fsos};
- $r->{distro} = $r->{root}->{osdistro} if exists $r->{root}->{osdistro};
- $r->{version} = $r->{root}->{osversion} if exists $r->{root}->{osversion};
-}
-
-sub assign_mount_points
-{
- local $_;
- my $r = shift;
-
- $r->{mounts} = { "/" => $r->{root_device} };
- $r->{filesystems} = { $r->{root_device} => $r->{root} };
-
- # Use /etc/fstab if we have it to mount the rest.
- if (exists $r->{root}->{fstab}) {
- my @fstab = @{$r->{root}->{fstab}};
- foreach (@fstab) {
- my ($spec, $file) = @$_;
-
- my ($dev, $fs) = find_filesystem ($spec);
- if ($dev) {
- $r->{mounts}->{$file} = $dev;
- $r->{filesystems}->{$dev} = $fs;
- if (exists $fs->{used}) {
- $fs->{used}++
- } else {
- $fs->{used} = 1
- }
- }
- }
- }
-}
-
-# Find filesystem by device name, LABEL=.. or UUID=..
-sub find_filesystem
-{
- local $_ = shift;
-
- if (/^LABEL=(.*)/) {
- my $label = $1;
- foreach (sort keys %fses) {
- if (exists $fses{$_}->{label} &&
- $fses{$_}->{label} eq $label) {
- return ($_, $fses{$_});
- }
- }
- warn "unknown filesystem label $label\n";
- return ();
- } elsif (/^UUID=(.*)/) {
- my $uuid = $1;
- foreach (sort keys %fses) {
- if (exists $fses{$_}->{uuid} &&
- $fses{$_}->{uuid} eq $uuid) {
- return ($_, $fses{$_});
- }
- }
- warn "unknown filesystem UUID $uuid\n";
- return ();
- } else {
- return ($_, $fses{$_}) if exists $fses{$_};
-
- if (m{^/dev/hd(.*)} && exists $fses{"/dev/sd$1"}) {
- return ("/dev/sd$1", $fses{"/dev/sd$1"});
- }
- if (m{^/dev/xvd(.*)} && exists $fses{"/dev/sd$1"}) {
- return ("/dev/sd$1", $fses{"/dev/sd$1"});
- }
-
- return () if m{/dev/cdrom};
-
- warn "unknown filesystem $_\n";
- return ();
- }
-}
-
-#print Dumper(\%oses);
-
-#----------------------------------------------------------------------