move functions to get available space from installer to drakxtools (to be used in draklive-install)

1 files changed, 35 insertions, 0 deletions

diff --git a/perl-install/fs/any.pm b/perl-install/fs/any.pm
index d523a6943..730252b40 100644
--- a/perl-install/fs/any.pm
+++ b/perl-install/fs/any.pm
@@ -104,4 +104,39 @@ sub prepare_minimal_root {
     }
 }
 
+sub getAvailableSpace {
+    my ($fstab) = @_;
+
+    #- make sure of this place to be available for installation, this could help a lot.
+    #- currently doing a very small install use 36Mb of postinstall-rpm, but installing
+    #- these packages may eat up to 90Mb (of course not all the server may be installed!).
+    #- 65mb may be a good choice to avoid almost all problem of insuficient space left...
+    my $minAvailableSize = 65 * sqr(1024);
+
+    my $n = !$::testing && getAvailableSpace_mounted($::prefix) || 
+            getAvailableSpace_raw($fstab) * 512 / 1.07;
+    $n - max(0.1 * $n, $minAvailableSize);
+}
+
+sub getAvailableSpace_mounted {
+    my ($prefix) = @_;
+    my $dir = -d "$prefix/usr" ? "$prefix/usr" : $prefix;
+    my (undef, $free) = MDK::Common::System::df($dir) or return;
+    log::l("getAvailableSpace_mounted $free KB");
+    $free * 1024 || 1;
+}
+sub getAvailableSpace_raw {
+    my ($fstab) = @_;
+
+    do { $_->{mntpoint} eq '/usr' and return $_->{size} } foreach @$fstab;
+    do { $_->{mntpoint} eq '/'    and return $_->{size} } foreach @$fstab;
+
+    if ($::testing) {
+	my $nb = 450;
+	log::l("taking ${nb}MB for testing");
+	return MB($nb);
+    }
+    die "missing root partition";
+}
+
 1;