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|
package fs;
use diagnostics;
use strict;
use common;
use log;
use devices;
use fs::type;
use fs::get;
use fs::format;
use fs::mount_options;
use fs::loopback;
use fs::mount;
use run_program;
use detect_devices;
use modules;
use fsedit;
sub read_fstab {
my ($prefix, $file, @reading_options) = @_;
if (member('keep_default', @reading_options)) {
push @reading_options, 'freq_passno', 'keep_device_LABEL', 'keep_device_UUID';
}
my %comments;
my $comment;
my @l = grep {
if (/^Filename\s*Type\s*Size/) {
0; #- when reading /proc/swaps
} elsif (/^\s*#/) {
$comment .= chomp_($_) . "\n";
0;
} else {
$comments{$_} = $comment if $comment;
$comment = '';
1;
}
} cat_("$prefix$file");
#- attach comments at the end of fstab to the previous line
$comments{$l[-1]} = $comment if $comment;
map {
my ($dev, $mntpoint, $fs_type, $options, $freq, $passno) = split;
my $comment = $comments{$_};
$options = 'defaults' if $options eq 'rw'; # clean-up for mtab read
s/\\040/ /g foreach $mntpoint, $dev, $options;
if ($fs_type eq 'ext4') {
$options = join(",", grep { !/extents/ } split(',', $options)) || 'defaults';
}
my $h = {
mntpoint => $mntpoint, fs_type => $fs_type,
options => $options, comment => $comment,
if_(member('keep_freq_passno', @reading_options), freq => $freq, passno => $passno),
};
put_in_hash($h, fs::wild_device::to_subpart($dev));
if ($h->{device_LABEL} && !$h->{device_alias} && member('keep_device_LABEL', @reading_options)) {
$h->{prefer_device_LABEL} = 1;
} elsif ($h->{device_UUID} && !$h->{device_alias} && member('keep_device_UUID', @reading_options)) {
$h->{prefer_device_UUID} = 1;
} else {
$h->{prefer_device} = 1;
}
if ($h->{options} =~ /credentials=/ && !member('verbatim_credentials', @reading_options)) {
require fs::remote::smb;
#- remove credentials=file with username=foo,password=bar,domain=zoo
#- the other way is done in fstab_to_string
my ($options, $unknown) = fs::mount_options::unpack($h);
my $file = delete $options->{'credentials='};
my $credentials = fs::remote::smb::read_credentials_raw($file);
if ($credentials->{username}) {
$options->{"$_="} = $credentials->{$_} foreach qw(username password domain);
fs::mount_options::pack($h, $options, $unknown);
}
} elsif ($h->{fs_type} eq 'davfs2' && !member('verbatim_credentials', @reading_options)) {
require fs::remote::davfs;
if (my $credentials = fs::remote::davfs::read_credentials($h->{mntpoint})) {
my ($options, $unknown) = fs::mount_options::unpack($h);
$options->{"$_="} = $credentials->{$_} foreach qw(username password);
fs::mount_options::pack($h, $options, $unknown);
}
}
$h;
} @l;
}
sub merge_fstabs {
my ($loose, $fstab, @l) = @_;
foreach my $p (@$fstab) {
my ($l1, $l2) = partition { fs::get::is_same_hd($_, $p) } @l;
my ($p2) = @$l1 or next;
@l = @$l2;
$p->{mntpoint} = $p2->{mntpoint} if delete $p->{unsafeMntpoint};
if (!$loose) {
$p->{fs_type} = $p2->{fs_type} if $p2->{fs_type};
$p->{options} = $p2->{options} if $p2->{options};
add2hash_($p, $p2);
} else {
$p->{isMounted} ||= $p2->{isMounted};
$p->{real_mntpoint} ||= $p2->{real_mntpoint};
}
$p->{device_alias} ||= $p2->{device_alias} if $p->{device} ne $p2->{device} && $p2->{device} !~ m|/|;
$p->{fs_type} && $p2->{fs_type} && $p->{fs_type} ne $p2->{fs_type}
&& $p->{fs_type} ne 'auto' && $p2->{fs_type} ne 'auto' and
log::l("err, fstab and partition table do not agree for $p->{device} type: $p->{fs_type} vs $p2->{fs_type}");
}
@l;
}
sub add2all_hds {
my ($all_hds, @l) = @_;
@l = merge_fstabs('', [ fs::get::really_all_fstab($all_hds) ], @l);
foreach (@l) {
my $s =
$_->{fs_type} eq 'nfs' ? 'nfss' :
$_->{fs_type} eq 'cifs' ? 'smbs' :
$_->{fs_type} eq 'davfs2' ? 'davs' :
isTrueLocalFS($_) || isSwap($_) || isOtherAvailableFS($_) ? '' :
'special';
push @{$all_hds->{$s}}, $_ if $s;
}
}
sub get_major_minor {
my ($fstab) = @_;
foreach (@$fstab) {
eval {
my (undef, $major, $minor) = devices::entry($_->{device});
($_->{major}, $_->{minor}) = ($major, $minor);
} if !$_->{major};
}
}
sub merge_info_from_mtab {
my ($fstab) = @_;
my @l1 = map { my $l = $_;
my $h = fs::type::fs_type2subpart('swap');
$h->{$_} = $l->{$_} foreach qw(device major minor);
$h;
} read_fstab('', '/proc/swaps');
my @l2 = map { read_fstab('', $_) } '/etc/mtab', '/proc/mounts';
foreach (@l1, @l2) {
log::l("found mounted partition on $_->{device} with $_->{mntpoint}");
if ($::isInstall && $_->{mntpoint} =~ m!^/tmp/\w*image$!) {
$_->{real_mntpoint} = delete $_->{mntpoint};
}
$_->{isMounted} = 1;
set_isFormatted($_, 1);
}
merge_fstabs('loose', $fstab, @l1, @l2);
}
# - when using "$loose", it does not merge in type&options from the fstab
sub merge_info_from_fstab {
my ($fstab, $prefix, $uniq, $loose) = @_;
my @l = grep {
if ($uniq) {
my $part = fs::get::mntpoint2part($_->{mntpoint}, $fstab);
!$part || fs::get::is_same_hd($part, $_); #- keep it only if it is the mount point AND the same device
} else {
1;
}
} read_fstab($prefix, '/etc/fstab', 'keep_default');
merge_fstabs($loose, $fstab, @l);
}
sub get_info_from_fstab {
my ($all_hds) = @_;
my @l = read_fstab($::prefix, '/etc/fstab', 'keep_default');
add2all_hds($all_hds, @l);
}
sub prepare_write_fstab {
my ($fstab, $o_prefix, $b_keep_credentials) = @_;
$o_prefix ||= '';
my %new;
my (@smb_credentials, @davfs_credentials);
my @l = map {
my $device =
isLoopback($_) ?
($_->{mntpoint} eq '/' ? "/initrd/loopfs" : $_->{loopback_device}{mntpoint}) . $_->{loopback_file} :
fs::wild_device::from_part($o_prefix, $_);
my $comment = $_->{comment};
$comment = '' if $comment =~ m!^Entry for /dev/.* :!;
$comment ||= "# Entry for /dev/$_->{device} :\n" if $device =~ /^(UUID|LABEL)=/;
my $real_mntpoint = $_->{mntpoint} || ${{ '/tmp/hdimage' => '/mnt/hd' }}{$_->{real_mntpoint}};
if (!member('bind', split(',', $_->{options}))) {
mkdir_p("$o_prefix$real_mntpoint") if $real_mntpoint =~ m|^/|;
}
my $mntpoint = fs::type::carry_root_loopback($_) ? '/initrd/loopfs' : $real_mntpoint;
my $needed_to_boot = member($_->{mntpoint}, fs::type::directories_needed_to_boot());
my ($freq, $passno) =
exists $_->{freq} ?
($_->{freq}, $_->{passno}) :
isTrueLocalFS($_) && !$_->{dmcrypt_name} && $_->{options} !~ /encryption=/ && (!$_->{is_removable} || $needed_to_boot) ?
(1, $_->{mntpoint} eq '/' ? 1 : fs::type::carry_root_loopback($_) ? 0 : 2) :
(0, 0);
if (($device eq 'none' || !$new{$device}) && ($mntpoint eq 'swap' || !$new{$mntpoint})) {
#- keep in mind the new line for fstab.
$new{$device} = 1;
$new{$mntpoint} = 1;
my $options = $_->{options} || 'defaults';
if (($_->{is_removable} || member($_->{fs_type}, qw(ntfs ntfs-3g))) && !$needed_to_boot && $_->{options} !~ /nofail/) {
$options .= ',nofail';
}
if ($_->{fs_type} eq 'cifs' && $options =~ /password=/ && !$b_keep_credentials) {
require fs::remote::smb;
|