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package fs::proc_partitions; # $Id: proc_partitions.pm 232285 2007-12-03 16:41:16Z pixel $
use common;
sub read_raw() {
my (undef, undef, @all) = cat_("/proc/partitions");
grep {
$_->{size} != 1 && # skip main extended partition
$_->{size} != 0x3fffffff; # skip cdroms (otherwise stops cd-audios)
} map {
my %l;
@l{qw(major minor size dev)} = split;
\%l;
} @all;
}
sub read {
my ($hds) = @_;
my @all = read_raw();
my ($parts, $_disks) = partition { $_->{dev} =~ /\d$/ && $_->{dev} !~ /^(sr|scd)/ } @all;
fs::get_major_minor($hds);
my $prev_part;
foreach my $part (@$parts) {
my $dev = $part->{dev};
if (my $hd = find { $part->{dev} =~ /^\Q$_->{device}\E./ } @$hds) {
put_in_hash($part, partition_table::hd2minimal_part($hd));
}
undef $prev_part if $prev_part && ($prev_part->{rootDevice} || '') ne ($part->{rootDevice} || '');
$part->{device} = $dev;
$part->{size} *= 2; # from KB to sectors
$part->{start} = $prev_part ? $prev_part->{start} + $prev_part->{size} : 0;
require fs::type;
put_in_hash($part, fs::type::type_subpart_from_magic($part));
$prev_part = $part;
delete $part->{dev}; # cleanup
}
@$parts;
}
sub compare {
my ($hd) = @_;
eval { $hd->isa('partition_table::lvm') } and return;
my @l1 = partition_table::get_normal_parts($hd);
my @l2 = grep { $_->{rootDevice} eq $hd->{device} } &read([$hd]);
#- /proc/partitions includes partition with type "empty" and a non-null size
#- so add them for comparison
my ($len1, $len2) = (int(@l1) + $hd->{primary}{nb_special_empty}, int(@l2));
if ($len1 != $len2) {
if (find { $_->{pt_type} == 0xbf } @l1) {
log::l("not using /proc/partitions because of the presence of solaris extended partition"); #- cf #33866
} else {
die sprintf(
"/proc/partitions does not agree with drakx %d != %d:\n%s\n", $len1, $len2,
"/proc/partitions: " . join(", ", map { "$_->{device} ($_->{rootDevice})" } @l2));
}
}
$len2;
}
sub use_ {
my ($hd) = @_;
require partition_table::readonly;
partition_table::readonly->initialize($hd, [ grep { $_->{rootDevice} eq $hd->{device} } &read([$hd]) ]);
}
1;
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