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package fs::proc_partitions; # $Id$
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;
my $devfs_like = any { $_->{dev} =~ m|/disc$| } @$disks;
fs::get_major_minor($hds);
my %devfs2normal = map {
my $hd = $_;
my $disk = find { $_->{major} == $hd->{major} && $_->{minor} == $hd->{minor} } @$disks;
$disk->{dev} => $_->{device};
} @$hds;
my $prev_part;
foreach my $part (@$parts) {
my $dev;
if ($devfs_like) {
$dev = -e "/dev/$part->{dev}" ? $part->{dev} : sprintf("0x%x%02x", $part->{major}, $part->{minor});
$part->{rootDevice} = $devfs2normal{dirname($part->{dev}) . '/disc'};
} else {
$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) = @_;
$hd->{bus} =~ /^dm_/ and log::l("skipping /proc/partititions check for dmraid $hd->{device}"), return;
my @l1 = partition_table::get_normal_parts($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 && arch() ne 'ppc') {
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) = @_;
partition_table::raw::zero_MBR($hd);
$hd->{readonly} = 1;
$hd->{getting_rid_of_readonly_allowed} = 1;
$hd->{primary} = { normal => [ grep { $_->{rootDevice} eq $hd->{device} } &read([$hd]) ] };
}
1;
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