1 files changed, 155 insertions, 0 deletions
diff --git a/perl-install/fs/get.pm b/perl-install/fs/get.pm
new file mode 100644
index 000000000..72727c253
--- /dev/null
+++ b/perl-install/fs/get.pm
@@ -0,0 +1,155 @@
+package fs::get; # $Id: get.pm 54943 2006-08-09 17:41:26Z pixel $
+
+use diagnostics;
+use strict;
+
+use partition_table;
+use fs::type;
+use fs::loopback;
+use fs::wild_device;
+use fs;
+use common;
+use log;
+
+sub empty_all_hds() {
+    { hds => [], lvms => [], raids => [], loopbacks => [], raw_hds => [], nfss => [], smbs => [], davs => [], special => [] };
+}
+sub fstab {
+    my ($all_hds) = @_;
+    my @parts = map { partition_table::get_normal_parts($_) } hds($all_hds);
+    @parts, @{$all_hds->{raids}}, @{$all_hds->{loopbacks}};
+}
+sub really_all_fstab {
+    my ($all_hds) = @_;
+    my @l = fstab($all_hds);
+    @l, @{$all_hds->{raw_hds}}, @{$all_hds->{nfss}}, @{$all_hds->{smbs}}, @{$all_hds->{davs}};
+}
+
+sub fstab_and_holes {
+    my ($all_hds, $b_non_readonly) = @_;
+    my @hds = grep { !($b_non_readonly && $_->{readonly}) } hds($all_hds);
+    hds_fstab_and_holes(@hds), @{$all_hds->{raids}}, @{$all_hds->{loopbacks}};
+}
+
+sub holes {
+    my ($all_hds, $b_non_readonly) = @_;
+    grep { isEmpty($_) } fstab_and_holes($all_hds, $b_non_readonly);
+}
+sub hds_holes {
+    grep { isEmpty($_) } hds_fstab_and_holes(@_);
+}
+sub free_space {
+    my ($all_hds) = @_;
+    sum map { $_->{size} } holes($all_hds);
+}
+sub hds_free_space {
+    sum map { $_->{size} } hds_holes(@_);
+}
+
+sub hds {
+    my ($all_hds) = @_;
+    (@{$all_hds->{hds}}, @{$all_hds->{lvms}});
+}
+
+#- get all normal partition including special ones as found on sparc.
+sub hds_fstab {
+    map { partition_table::get_normal_parts($_) } @_;
+}
+
+sub vg_free_space {
+    my ($hd) = @_;
+    my @parts = partition_table::get_normal_parts($hd);
+    $hd->{totalsectors} - sum map { $_->{size} } @parts;
+}
+
+sub hds_fstab_and_holes {
+    map {
+	if (isLVM($_)) {
+	    my @parts = partition_table::get_normal_parts($_);
+	    my $free = vg_free_space($_);
+	    my $free_part = { start => 0, size => $free, pt_type => 0, rootDevice => $_->{VG_name} };
+	    @parts, if_($free >= $_->cylinder_size, $free_part);
+	} else {
+	    partition_table::get_normal_parts_and_holes($_);
+	}
+    } @_;
+}
+
+
+sub device2part {
+    my ($dev, $fstab) = @_;
+    my $subpart = fs::wild_device::to_subpart($dev);
+    my $part = find { is_same_hd($subpart, $_) } @$fstab;
+    log::l("fs::get::device2part: unknown device <<$dev>>") if !$part;
+    $part;
+}
+
+sub part2hd {
+    my ($part, $all_hds) = @_;
+    my $hd = find { $part->{rootDevice} eq ($_->{device} || $_->{VG_name}) } hds($all_hds);
+    $hd;
+}
+
+sub file2part {
+    my ($fstab, $file, $b_keep_simple_symlinks) = @_;    
+    my $part;
+
+    $file = $b_keep_simple_symlinks ? common::expand_symlinks_but_simple("$::prefix$file") : expand_symlinks("$::prefix$file");
+    unless ($file =~ s/^$::prefix//) {
+	my $part = find { fs::type::carry_root_loopback($_) } @$fstab or die;
+	log::l("found $part->{mntpoint}");
+	$file =~ s|/initrd/loopfs|$part->{mntpoint}|;
+    }
+    foreach (@$fstab) {
+	my $m = $_->{mntpoint};
+	$part = $_ if 
+	  $file =~ /^\Q$m/ && 
+	    (!$part || length $part->{mntpoint} < length $m);
+    }
+    $part or die "file2part: not found $file";
+    $file =~ s|$part->{mntpoint}/?|/|;
+    ($part, $file);
+}
+
+sub mntpoint2part {
+    my ($mntpoint, $fstab) = @_;
+    find { $mntpoint eq $_->{mntpoint} } @$fstab;
+}
+sub has_mntpoint {
+    my ($mntpoint, $all_hds) = @_;
+    mntpoint2part($mntpoint, [ really_all_fstab($all_hds) ]);
+}
+sub root_ {
+    my ($fstab, $o_boot) = @_;
+    $o_boot && mntpoint2part("/boot", $fstab) || mntpoint2part("/", $fstab);
+}
+sub root { &root_ || {} }
+
+sub up_mount_point {
+    my ($mntpoint, $fstab) = @_;
+    while (1) {
+	$mntpoint = dirname($mntpoint);
+	$mntpoint ne "." or return;
+	$_->{mntpoint} eq $mntpoint and return $_ foreach @$fstab;
+    }
+}
+
+sub is_same_hd {
+    my ($hd1, $hd2) = @_;
+    if ($hd1->{major} && $hd2->{major}) {
+	$hd1->{major} == $hd2->{major} && $hd1->{minor} == $hd2->{minor};
+    } elsif (my ($s1) = $hd1->{device} =~ m|https?://(.+?)/*$|) {
+	my ($s2) = $hd2->{device} =~ m|https?://(.+?)/*$|;
+	$s1 eq $s2;
+    } else {
+	$hd1->{device_LABEL} && $hd2->{device_LABEL} && $hd1->{device_LABEL} eq $hd2->{device_LABEL}
+	  || $hd1->{device} && $hd2->{device} && $hd1->{device} eq $hd2->{device};
+    }
+}
+
+sub mntpoint_prefixed {
+    my ($part) = @_;
+    $::prefix . $part->{mntpoint};
+}
+
+1;