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|
package fs::get;
use diagnostics;
use strict;
use partition_table;
use fs::type;
use fs::loopback;
use fs::wild_device;
use fs;
use common;
use log;
=head1 SYNOPSYS
B<fs::get>
=head1 Functions
=over
=cut
sub empty_all_hds() {
{ hds => [], lvms => [], raids => [], dmcrypts => [], 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}}, @{$all_hds->{dmcrypts}}, @{$all_hds->{loopbacks}};
}
sub really_all_fstab {
my ($all_hds) = @_;
my @l = fstab($all_hds);
@l, (grep { !$_->{is_removable} } @{$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->{dmcrypts}}, @{$all_hds->{loopbacks}};
}
sub holes {
my ($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}});
}
=item hds_fstab(@hds)
Get all normal partition.
=cut
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($all_hds) ]);
}
sub root_from_mounted() {
foreach (`df -P`) {
next if m!^[^/]!; # ignore tootfs
my ($fs, undef, undef, undef, undef, $mntpnt) = split(/\s+/);
return $fs if $mntpnt eq '/';
}
}
sub root_ {
my ($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_UUID} && $hd2->{device_UUID} && $hd1->{device_UUID} eq $hd2->{device_UUID}
|| $hd1->{device} && $hd2->{device} && $hd1->{device} eq $hd2->{device}
|| $hd1->{device} && $hd2->{device_alias} && $hd1->{device} eq $hd2->{device_alias}
|| $hd1->{device_alias} && $hd2->{device} && $hd1->{device_alias} eq $hd2->{device}
|| $hd1->{device_alias} && $hd2->{device_alias} && $hd1->{device_alias} eq $hd2->{device_alias};
}
}
sub mntpoint_prefixed {
my ($part) = @_;
$::prefix . $part->{mntpoint};
}
=back
=cut
1;
|
