index : drakx	distro/mdv2007.1 distro/mdv2008.0 distro/mdv2008.1 distro/mdv2009.0 distro/mdv2009.1 distro/mdv2010.0 distro/mes5 distro/mes5-2.6.33 distro/mes6 distro/mga1 distro/mga2 distro/mga3 distro/mga4 distro/mga5 distro/mga6 distro/mga7 distro/mga8 distro/mga9 master topic/Corpo_2_1 topic/KA9_0 topic/MDK-10-update topic/MDK-10_1-update topic/MDK-10_2-update topic/MDK-2006_0-update topic/MDK92-branch topic/MDKC_1_0 topic/PCMCIA_CS_DISTRO topic/R9_0-64bit-branch topic/R9_1_HP-branch topic/a topic/before_matchbox_wm topic/bug-13680 topic/dietlibc topic/efi topic/extlinux topic/firewall topic/gdk-pixbuf-0-branch topic/gi-ppc topic/ia64-8_1 topic/mandrakesoft topic/mlcd4 topic/ppp topic/rp-pppoe topic/switching_to_dnf topic/switching_to_urpmi topic/unlabeled-1.1.1 topic/v_webmin_0_87 topic/x86_64-branch user/animtim/designWork user/colin/rescue-systemd user/ennael/mga6 user/erwan/bug-13680 user/jibz/aarch64 user/martinw/mga6 user/pterjan/arm64
	Mageia Installer and base platform for many utilities	Thierry Vignaud [tv]

summaryrefslogtreecommitdiffstats

log msg author committer range

path: root/perl-install/partition_table

	Commit message (Expand)	Author	Age	Files	Lines
...
*	add/remove spaces to make perl_checker happy	Pascal Rigaux	2002-11-13	1	-1/+1
*	add/remove some spaces to make perl_checker happy	Pascal Rigaux	2002-11-12	1	-1/+1
*	add or remove spaces where need to please perl_checker	Pascal Rigaux	2002-11-11	2	-3/+3
*	- use "foreach" instead of "for" in list context	Pascal Rigaux	2002-11-11	1	-1/+1
*	- do not use "foreach $var (...) {...}" use "foreach my $var (...) {...}" ins...	Pascal Rigaux	2002-11-11	1	-5/+3
*	various small syntax enhancements to please perl_checker	Pascal Rigaux	2002-11-11	1	-1/+1
*	remove unneeded parentheses on the right side of infix if/foreach/unless	Pascal Rigaux	2002-11-06	1	-1/+1
*	replace "_" with "N" and "__" with "N_"	Pascal Rigaux	2002-11-06	1	-1/+1
*	(partition_table::dos::last_usable_sector): don't use totalsectors, compute i...	Pascal Rigaux	2002-08-28	1	-0/+6
*	(test_for_bad_drives): classify error messages (either read, write or somethi...	Pascal Rigaux	2002-08-27	1	-5/+6
*	add Acronis bootloader magic	Pascal Rigaux	2002-08-11	1	-0/+1
*	make new perl_checker happy (and that's not easy!)	Pascal Rigaux	2002-07-31	1	-1/+1
*	Help "perl -cw" not reporting any warning	Pascal Rigaux	2002-07-25	1	-8/+5
*	g Move 2: partition table: hierarchy	Thierry Vignaud	2002-07-23	8	-0/+1382

• [prev]

generated by cgit v1.2.1 (git 2.21.0) at 2024-12-05 00:24:03 +0000

package fs; # $Id$

use diagnostics;
use strict;

use MDK::Common::System;
use MDK::Common::Various;
use common;
use log;
use devices;
use partition_table qw(:types);
use run_program;
use swap;
use detect_devices;
use modules;
use fsedit;
use loopback;


sub read_fstab {
    my ($prefix, $file, @reading_options) = @_;

    my %comments;
    my $comment;
    my @l = grep {
	if (/^\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, $type, $options, $freq, $passno) = split;
	my $comment = $comments{$_};

	$options = 'defaults' if $options eq 'rw'; # clean-up for mtab read

	$type = fs2type($type);
	if ($type eq 'supermount') {
	    # normalize this bloody supermount
	    $options = join(",", 'supermount', grep {
		if (/fs=(.*)/) {
		    $type = $1;
		    0;
		} elsif (/dev=(.*)/) {
		    $dev = $1;
		    0;
		} elsif ($_ eq '--') {
		    0;
		} else {
		    1;
		}
	    } split(',', $options));
	} elsif ($type eq 'smb') {
	    # prefering type "smbfs" over "smb"
	    $type = 'smbfs';
	}
	$mntpoint =~ s/\\040/ /g;
	$dev =~ s/\\040/ /g;

	my $h = { 
		 device => $dev, mntpoint => $mntpoint, type => $type, 
		 options => $options, comment => $comment,
		 if_(member('keep_freq_passno', @reading_options), freq => $freq, passno => $passno),
		};

	if ($dev =~ /^LABEL=/) {
	    if (my $e = find { $_->{mntpoint} eq $mntpoint } read_fstab('', '/proc/mounts')) {
		$h->{device_LABEL} = $dev;
		$dev = $h->{device} = $e->{device};
	    }
        }
	if ($dev =~ m,/(tmp|dev)/,) {
	    ($h->{major}, $h->{minor}) = unmakedev((stat "$prefix$dev")[6]);

	    my $symlink = readlink("$prefix$dev");
	    $dev =~ s,/(tmp|dev)/,,;

	    if ($symlink =~ m|^[^/]+$|) {
		$h->{device_alias} = $dev;
		$h->{device} = $symlink;
	    } else {
		$h->{device} = $dev;
	    }
	}

	if ($h->{options} =~ /credentials=/ && !member('verbatim_credentials', @reading_options)) {
	    require network::smb;
	    #- remove credentials=file with username=foo,password=bar,domain=zoo
	    #- the other way is done in fstab_to_string
	    my ($options, $unknown) = mount_options_unpack($h);
	    my $file = delete $options->{'credentials='};
	    my $credentials = network::smb::read_credentials_raw($file);
	    if ($credentials->{username}) {
		$options->{"$_="} = $credentials->{$_} foreach qw(username password domain);
		mount_options_pack($h, $options, $unknown);
	    }
	}

	$h;
    } @l;
}

sub merge_fstabs {
    my ($loose, $fstab, @l) = @_;

    foreach my $p (@$fstab) {
	my ($l1, $l2) = partition { fsedit::is_same_hd($_, $p) } @l;
	my ($p2) = @$l1 or next;
	@l = @$l2;

	$p->{mntpoint} = $p2->{mntpoint} if delete $p->{unsafeMntpoint};

	$p->{type} = $p2->{type} if $p2->{type} && !$loose;
	$p->{options} = $p2->{options} if $p2->{options} && !$loose;
	#- important to get isMounted property else DrakX may try to mount already mounted partitions :-(
	add2hash($p, $p2);
	$p->{device_alias} ||= $p2->{device_alias} || $p2->{device} if $p->{device} ne $p2->{device} && $p2->{device} !~ m|/|;

	$p->{type} && $p2->{type} && $p->{type} ne $p2->{type} && type2fs($p) ne type2fs($p2) &&
	  $p->{type} ne 'auto' && $p2->{type} ne 'auto' and
	    log::l("err, fstab and partition table do not agree for $p->{device} type: " .
		   (type2fs($p) || type2name($p->{type})) . " vs ", (type2fs($p2) || type2name($p2->{type})));
    }
    @l;
}

sub add2all_hds {
    my ($all_hds, @l) = @_;

    @l = merge_fstabs('', [ fsedit::get_really_all_fstab($all_hds) ], @l);

    foreach (@l) {
	my $s = 
	    isThisFs('nfs', $_) ? 'nfss' :
	    isThisFs('smbfs', $_) ? 'smbs' :
	    isThisFs('davfs', $_) ? 'davs' :
	    isTrueFS($_) || isSwap($_) || isOtherAvailableFS($_) ? '' :
	    'special';
	push @{$all_hds->{$s}}, $_ if $s;
    }
}

sub get_major_minor {
    eval {
	my (undef, $major, $minor) = devices::entry($_->{device});
	($_->{major}, $_->{minor}) = ($major, $minor);
    } foreach @_;
}

sub merge_info_from_mtab {
    my ($fstab) = @_;

    my @l1 = map { my $l = $_; 
		   my %l = (type => fs2type('swap')); 
		   $l{$_} = $l->{$_} foreach qw(device major minor); 
		   \%l;
	       } 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} eq '/tmp/hdimage') {
	    log::l("found hdimage on $_->{device}");
	    $_->{real_mntpoint} = delete $_->{mntpoint};
	    $_->{mntpoint} = common::usingRamdisk() && "/mnt/hd"; #- remap for hd install.
	}
	$_->{isMounted} = $_->{isFormatted} = 1;
	delete $_->{options};
    } 
    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 $part = fsedit::mntpoint2part($_->{mntpoint}, $fstab);
	    !$part || fsedit::is_same_hd($part, $_); #- keep it only if it is the mountpoint AND the same device
	} else {
	    1;
	}
    } read_fstab($prefix, "/etc/fstab", 'keep_freq_passno');

    merge_fstabs($loose, $fstab, @l);
}

# - when using "$loose", it does not merge in type&options from the fstab
sub get_info_from_fstab {
    my ($all_hds, $prefix) = @_;
    my @l = read_fstab($prefix, "/etc/fstab", 'keep_freq_passno');
    add2all_hds($all_hds, @l)
}

sub prepare_write_fstab {
    my ($fstab, $o_prefix, $b_keep_smb_credentials) = @_;
    $o_prefix ||= '';

    my %new;
    my @smb_credentials;
    my @l = map { 
	my $device = 
	  isLoopback($_) ? 
	      ($_->{mntpoint} eq '/' ? "/initrd/loopfs" : $_->{loopback_device}{mntpoint}) . $_->{loopback_file} :
	  part2device($o_prefix, $_->{device}, $_->{type});

	my $real_mntpoint = $_->{mntpoint} || ${{ '/tmp/hdimage' => '/mnt/hd' }}{$_->{real_mntpoint}};
	mkdir_p("$o_prefix$real_mntpoint") if $real_mntpoint =~ m|^/|;
	my $mntpoint = loopback::carryRootLoopback($_) ? '/initrd/loopfs' : $real_mntpoint;

	my ($freq, $passno) =
	  exists $_->{freq} ?
	    ($_->{freq}, $_->{passno}) :
	  isTrueFS($_) && $_->{options} !~ /encryption=/ ? 
	    (1, $_->{mntpoint} eq '/' ? 1 : loopback::carryRootLoopback($_) ? 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};

	    if (isThisFs('smbfs', $_) && $options =~ /password=/ && !$b_keep_smb_credentials) {
		require network::smb;
		if (my ($opts, $smb_credentials) = network::smb::fstab_entry_to_credentials($_)) {
		    $options = $opts;
		    push @smb_credentials, $smb_credentials;
		}
	    }

	    my $type = type2fs($_);

	    my $dev = 
	      $_->{device_LABEL} ? $_->{device_LABEL} :
	      $_->{device_alias} ? "/dev/$_->{device_alias}" : $device;

	    $mntpoint =~ s/ /\\040/g;
	    $dev =~ s/ /\\040/g;

	    # handle bloody supermount special case
	    if ($options =~ /supermount/) {
		my @l = grep { $_ ne 'supermount' } split(',', $options);
		my @l1 = grep { member($_, 'ro', 'exec') } @l;
		my @l2 = difference2(\@l, \@l1);
		$options = join(",", "dev=$dev", "fs=$type", @l1, if_(@l2, '--', @l2));
		($dev, $type) = ('none', 'supermount');
	    }

	    [ $mntpoint, $_->{comment} . join(' ', $dev, $mntpoint, $type, $options || 'defaults', $freq, $passno) . "\n" ];
	} else {
	    ()
	}
    } grep { $_->{device} && ($_->{mntpoint} || $_->{real_mntpoint}) && $_->{type} } @$fstab;

    join('', map { $_->[1] } sort { $a->[0] cmp $b->[0] } @l), \@smb_credentials;
}

sub fstab_to_string {
    my ($all_hds, $o_prefix) = @_;
    my $fstab = [ fsedit::get_really_all_fstab($all_hds), @{$all_hds->{special}} ];
    my ($s, undef) = prepare_write_fstab($fstab, $o_prefix, 'keep_smb_credentials');
    $s;
}

sub write_fstab {
    my ($all_hds, $o_prefix) = @_;
    log::l("writing $o_prefix/etc/fstab");
    my $fstab = [ fsedit::get_really_all_fstab($all_hds), @{$all_hds->{special}} ];
    my ($s, $smb_credentials) = prepare_write_fstab($fstab, $o_prefix, '');
    output("$o_prefix/etc/fstab", $s);
    network::smb::save_credentials($_) foreach @$smb_credentials;
}

sub part2device {
    my ($prefix, $dev, $type) = @_;
    $dev eq 'none' || member($type, qw(nfs smbfs davfs)) ? 
      $dev : 
      do {
	  my $dir = $dev =~ m!^(/|LABEL=)! ? '' : '/dev/';
	  eval { devices::make("$prefix$dir$dev") };
	  "$dir$dev";
      };
}

sub auto_fs() {
    grep { chop; $_ && !/nodev/ } cat_("/etc/filesystems");
}

sub mount_options() {
    my %non_defaults = (
			sync => 'async', noatime => 'atime', noauto => 'auto', ro => 'rw', 
			user => 'nouser', nodev => 'dev', noexec => 'exec', nosuid => 'suid',
		       );
    my @user_implies = qw(noexec nodev nosuid);
    \%non_defaults, \@user_implies;
}

sub mount_options_unpack {
    my ($part) = @_;
    my $packed_options = $part->{options};

    my ($non_defaults, $user_implies) = mount_options();

    my @auto_fs = auto_fs();
    my %per_fs = (
		  iso9660 => [ qw(unhide) ],
		  vfat => [ qw(umask=0) ],
		  ntfs => [ qw(umask=0) ],
		  nfs => [ qw(rsize=8192 wsize=8192) ],
		  smbfs => [ qw(username= password=) ],
		  davfs => [ qw(username= password= uid= gid=) ],
		  reiserfs => [ 'notail' ],
		 );
    push @{$per_fs{$_}}, 'usrquota', 'grpquota' foreach 'ext2', 'ext3', 'xfs';

    while (my ($fs, $l) = each %per_fs) {
	isThisFs($fs, $part) || $part->{type} eq 'auto' && member($fs, @auto_fs) or next;
	$non_defaults->{$_} = 1 foreach @$l;
    }

    $non_defaults->{encrypted} = 1 if !$part->{isFormatted} || isSwap($part);

    $non_defaults->{supermount} = 1 if member(type2fs($part), 'auto', @auto_fs);

    my $defaults = { reverse %$non_defaults };
    my %options = map { $_ => '' } keys %$non_defaults;
    my @unknown;
    foreach (split(",", $packed_options)) {
	if ($_ eq 'user') {
	    $options{$_} = 1 foreach 'user', @$user_implies;
	} elsif (exists $non_defaults->{$_}) {
	    $options{$_} = 1;
	} elsif ($defaults->{$_}) {
	    $options{$defaults->{$_}} = 0;
	} elsif (/(.*?=)(.*)/) {
	    $options{$1} = $2;
	} else {
	    push @unknown, $_;
	}
    }
    # merge those, for cleaner help
    $options{'rsize=8192,wsize=8192'} = delete $options{'rsize=8192'} && delete $options{'wsize=8192'}
      if exists $options{'rsize=8192'};

    my $unknown = join(",", @unknown);
    \%options, $unknown;
}

sub mount_options_pack_ {
    my ($_part, $options, $unknown) = @_;

    my ($non_defaults, $user_implies) = mount_options();
    my @l;

    if (delete $options->{user}) {
	push @l, 'user';
	foreach (@$user_implies) {
	    if (!delete $options->{$_}) {
		# overriding
		$options->{$non_defaults->{$_}} = 1;
	    }
	}
    }
    push @l, map_each { if_($::b, $::a =~ /=$/ ? "$::a$::b" : $::a) } %$options;
    push @l, $unknown;

    join(",", uniq(grep { $_ } @l));
}
sub mount_options_pack {
    my ($part, $options, $unknown) = @_;
    $part->{options} = mount_options_pack_($part, $options, $unknown);
    noreturn();
}

sub mount_options_help() {
    (

	'grpquota' => '',

	'noatime' => N("Do not update inode access times on this file system
(e.g, for faster access on the news spool to speed up news servers)."),

	'noauto' => N("Can only be mounted explicitly (i.e.,
the -a option will not cause the file system to be mounted)."),

	'nodev' => N("Do not interpret character or block special devices on the file system."),

	'noexec' => N("Do not allow execution of any binaries on the mounted
file system. This option might be useful for a server that has file systems
containing binaries for architectures other than its own."),

	'nosuid' => N("Do not allow set-user-identifier or set-group-identifier
bits to take effect. (This seems safe, but is in fact rather unsafe if you
have suidperl(1) installed.)"),

	'ro' => N("Mount the file system read-only."),

	'sync' => N("All I/O to the file system should be done synchronously."),

	'supermount' => '',

	'user' => N("Allow an ordinary user to mount the file system. The
name of the mounting user is written to mtab so that he can unmount the file
system again. This option implies the options noexec, nosuid, and nodev
(unless overridden by subsequent options, as in the option line
user,exec,dev,suid )."),

	'usrquota' => '',

    );
}

sub set_default_options {
    my ($part, %opts) = @_;
    #- opts are: is_removable useSupermount security iocharset codepage

    my ($options, $unknown) = mount_options_unpack($part);

    if ($opts{is_removable}) {
	$options->{supermount} = $opts{useSupermount};
	$part->{type} = 'auto';
    }

    my $is_auto = isThisFs('auto', $part);

    if ($part->{media_type} eq 'cdrom') {
	$options->{ro} = 1;
    }

    if ($part->{media_type} eq 'fd') {
	# slow device so don't loose time, write now!
	$options->{sync} = 1;
    }

    if (isTrueFS($part)) {
	#- noatime on laptops (do not wake up the hd)
	#- Do  not  update  inode  access times on this
	#- file system (e.g, for faster access  on  the
	#- news spool to speed up news servers).
	$options->{noatime} = detect_devices::isLaptop();
    }
    if (isThisFs('nfs', $part)) {
	put_in_hash($options, { 
			       nosuid => 1, 'rsize=8192,wsize=8192' => 1, soft => 1,
			      });
    }
    if (isThisFs('smbfs', $part)) {
	add2hash($options, { 'username=' => '%' }) if !$options->{'credentials='};
    }
    if (isFat($part) || $is_auto) {

	put_in_hash($options, {
			       user => 1, noexec => 0,
			      }) if $opts{is_removable};

	put_in_hash($options, {
			       'umask=0' => $opts{security} < 3, 'iocharset=' => $opts{iocharset}, 'codepage=' => $opts{codepage},
			      });
    }
    if (isThisFs('ntfs', $part)) {
	put_in_hash($options, { ro => 1, 'umask=0' => $opts{security} < 3, 'iocharset=' => $opts{iocharset} });
    }
    if (isThisFs('iso9660', $part) || $is_auto) {
	put_in_hash($options, { user => 1, noexec => 0, 'iocharset=' => $opts{iocharset} });
    }
    if (isThisFs('reiserfs', $part)) {
	$options->{notail} = 1;
    } else {
	$options->{notail} = 0;
    }
    if (isLoopback($part) && !isSwap($part)) { #- no need for loop option for swap files
	$options->{loop} = 1;
    }

    # rationalize: no need for user
    if ($options->{autofs} || $options->{supermount}) {
	$options->{user} = 0;
    }

    # have noauto when we have user
    $options->{noauto} = 1 if $options->{user}; 

    if ($options->{user}) {
	# ensure security  (user_implies - noexec as noexec is not a security matter)
	$options->{$_} = 1 foreach 'nodev', 'nosuid';
    }

    mount_options_pack($part, $options, $unknown);
}

sub set_all_default_options {
    my ($all_hds, %opts) = @_;
    #- opts are: useSupermount security iocharset codepage

    my @removables = @{$all_hds->{raw_hds}};

    foreach my $part (fsedit::get_really_all_fstab($all_hds)) {
	set_default_options($part, %opts, is_removable => member($part, @removables));
    }
}

sub set_removable_mntpoints {
    my ($all_hds) = @_;

    my %names;
    foreach (@{$all_hds->{raw_hds}}) {
	my $name = detect_devices::suggest_mount_point($_) or next;
	
	my $s = ++$names{$name};
	$_->{mntpoint} ||= "/mnt/$name" . ($s == 1 ? '' : $s);
    }
}

sub get_raw_hds {
    my ($prefix, $all_hds) = @_;

    $all_hds->{raw_hds} = [ detect_devices::removables() ];
    get_major_minor(@{$all_hds->{raw_hds}});

    my @fstab = read_fstab($prefix, "/etc/fstab", 'keep_freq_passno');
    $all_hds->{nfss} = [ grep { isThisFs('nfs', $_) } @fstab ];
    $all_hds->{smbs} = [ grep { isThisFs('smbfs', $_) } @fstab ];
    $all_hds->{davs} = [ grep { isThisFs('davfs', $_) } @fstab ];
    $all_hds->{special} = [
       (grep { isThisFs('tmpfs', $_) } @fstab),
       { device => 'none', mntpoint => '/proc', type => 'proc' },
       { device => 'none', mntpoint => '/dev/pts', type => 'devpts', options => 'mode=0620' },
    ];
}

################################################################################
# formatting functions
################################################################################
sub disable_forced_fsck {
    my ($dev) = @_;
    run_program::run("tune2fs", "-c0", "-i0", devices::make($dev));
}

sub format_ext2($@) {
    #- mke2fs -b (1024|2048|4096) -c -i(1024 > 262144) -N (1 > 100000000) -m (0-100%) -L volume-label
    #- tune2fs
    my ($dev, @options) = @_;
    $dev =~ m,(rd|ida|cciss)/, and push @options, qw(-b 4096 -R stride=16); #- For RAID only.
    push @options, qw(-b 1024 -O none) if arch() =~ /alpha/;
    run_program::raw({ timeout => 60 * 60 }, 'mke2fs', '-F', @options, devices::make($dev)) or die \N("%s formatting of %s failed", any { $_ eq '-j' } @options ? "ext3" : "ext2", $dev);
}
sub format_ext3 {
    my ($dev, @options) = @_;
    format_ext2($dev, "-j", @options);
    disable_forced_fsck($dev);
}
sub format_reiserfs {
    my ($dev, @options) = @_;
    #TODO add -h tea
    run_program::raw({ timeout => 60 * 60 }, "mkreiserfs", "-ff", @options, devices::make($dev)) or die \N("%s formatting of %s failed", "reiserfs", $dev);
}
sub format_xfs {
    my ($dev, @options) = @_;
    run_program::raw({ timeout => 60 * 60 }, "mkfs.xfs", "-f", "-q", @options, devices::make($dev)) or die \N("%s formatting of %s failed", "xfs", $dev);
}
sub format_jfs {
    my ($dev, @options) = @_;
    run_program::raw({ timeout => 60 * 60 }, "mkfs.jfs", "-f", @options, devices::make($dev)) or die \N("%s formatting of %s failed", "jfs", $dev);
}
sub format_dos {
    my ($dev, @options) = @_;
    run_program::raw({ timeout => 60 * 60 }, "mkdosfs", @options, devices::make($dev)) or die \N("%s formatting of %s failed", "dos", $dev);
}
sub format_hfs {
    my ($dev, @options) = @_;
    run_program::raw({ timeout => 60 * 60 }, "hformat", @options, devices::make($dev)) or die \N("%s formatting of %s failed", "HFS", $dev);
}
sub real_format_part {
    my ($part) = @_;

    $part->{isFormatted} and return;

    my $dev = $part->{real_device} || $part->{device};

    my @options = if_($part->{toFormatCheck}, "-c");
    log::l("formatting device $dev (type ", type2name($part->{type}), ")");

    if (isExt2($part)) {
	push @options, "-F" if isLoopback($part);
	push @options, "-m", "0" if $part->{mntpoint} =~ m|^/home|;
	format_ext2($dev, @options);
    } elsif (isThisFs("ext3", $part)) {
	push @options, "-m", "0" if $part->{mntpoint} =~ m|^/home|;
        format_ext3($dev, @options);
    } elsif (isThisFs("reiserfs", $part)) {
        format_reiserfs($dev, @options, if_(c::kernel_version() =~ /^\Q2.2/, "-v", "1"));
    } elsif (isThisFs("xfs", $part)) {
        format_xfs($dev, @options);
    } elsif (isThisFs("jfs", $part)) {
        format_jfs($dev, @options);
    } elsif (isDos($part)) {
        format_dos($dev, @options);
    } elsif (isWin($part)) {
        format_dos($dev, @options, '-F', 32);
    } elsif (isThisFs('hfs', $part)) {
        format_hfs($dev, @options, '-l', "Untitled");
    } elsif (isAppleBootstrap($part)) {
        format_hfs($dev, @options, '-l', "bootstrap");
    } elsif (isSwap($part)) {
	my $check_blocks = any { /^-c$/ } @options;
        swap::make($dev, $check_blocks);
    } else {
	die \N("I don't know how to format %s in type %s", $part->{device}, type2name($part->{type}));
    }
    $part->{isFormatted} = 1;
}
sub format_part {
    my ($raids, $part, $prefix, $wait_message) = @_;
    if (isRAID($part)) {
	$wait_message->(N("Formatting partition %s", $part->{device})) if $wait_message;
	require raid;
	raid::format_part($raids, $part);
    } elsif (isLoopback($part)) {
	$wait_message->(N("Creating and formatting file %s", $part->{loopback_file})) if $wait_message;
	loopback::format_part($part, $prefix);
    } else {
	$wait_message->(N("Formatting partition %s", $part->{device})) if $wait_message;
	real_format_part($part);
    }
}

################################################################################
# mounting functions
################################################################################
sub set_loop {
    my ($part) = @_;
    if (!$part->{real_device}) {
	eval { modules::load('loop') };
	$part->{real_device} = devices::set_loop(devices::make($part->{device}), $part->{encrypt_key}, $part->{options} =~ /encryption=(\w+)/);
    }
}

sub formatMount_part {
    my ($part, $raids, $fstab, $prefix, $wait_message) = @_;

    if (isLoopback($part)) {
	formatMount_part($part->{loopback_device}, $raids, $fstab, $prefix, $wait_message);
    }
    if (my $p = up_mount_point($part->{mntpoint}, $fstab)) {
	formatMount_part($p, $raids, $fstab, $prefix, $wait_message) unless loopback::carryRootLoopback($part);
    }
    if ($part->{encrypt_key}) {
	set_loop($part);
    }
    if ($part->{toFormat}) {
	format_part($raids, $part, $prefix, $wait_message);
    }
    mount_part($part, $prefix, 0, $wait_message);
}

sub formatMount_all {
    my ($raids, $fstab, $prefix, $o_wait_message) = @_;
    formatMount_part($_, $raids, $fstab, $prefix, $o_wait_message) 
      foreach sort { isLoopback($a) ? 1 : isSwap($a) ? -1 : 0 } grep { $_->{mntpoint} } @$fstab;

    #- ensure the link is there
    loopback::carryRootCreateSymlink($_, $prefix) foreach @$fstab;

    #- for fun :)
    #- that way, when install exits via ctrl-c, it gives hand to partition
    eval {
	local $SIG{__DIE__} = 'ignore';
	my ($_type, $major, $minor) = devices::entry(fsedit::get_root($fstab)->{device});
	output "/proc/sys/kernel/real-root-dev", makedev($major, $minor);
    };
}

sub mount {
    my ($dev, $where, $fs, $b_rdonly, $o_options, $o_wait_message) = @_;
    log::l("mounting $dev on $where as type $fs, options $o_options");

    -d $where or mkdir_p($where);

    $dev = part2device('', $dev, $fs);

    my @fs_modules = qw(vfat hfs romfs ufs reiserfs xfs jfs ext3);

    if (member($fs, 'smb', 'smbfs', 'nfs', 'davfs', 'ntfs') && $::isStandalone) {
	$o_wait_message->(N("Mounting partition %s", $dev)) if $o_wait_message;
	system('mount', '-t', $fs, $dev, $where, if_($o_options, '-o', $o_options)) == 0 or die \N("mounting partition %s in directory %s failed", $dev, $where);
	return; #- do not update mtab, already done by mount(8)
    } elsif (member($fs, 'ext2', 'proc', 'usbdevfs', 'iso9660', @fs_modules)) {
	$where =~ s|/$||;

	my $flag = c::MS_MGC_VAL();
	$flag |= c::MS_RDONLY() if $b_rdonly;
	my $mount_opt = "";

	if ($fs eq 'vfat') {
	    $mount_opt = 'check=relaxed';
	} elsif ($fs eq 'reiserfs') {
	    #- could be better if we knew if there is a /boot or not
	    #- without knowing it, / is forced to be mounted with notail
	    # if $where =~ m|/(boot)?$|;
	    $mount_opt = 'notail'; #- notail in any case
	} elsif ($fs eq 'jfs' && !$b_rdonly) {
	    $o_wait_message->(N("Checking %s", $dev)) if $o_wait_message;
	    #- needed if the system is dirty otherwise mounting read-write simply fails
	    run_program::raw({ timeout => 60 * 60 }, "fsck.jfs", $dev) or do {
		my $err = $?;
		die "fsck.jfs failed" if $err & 0xfc00;
	    };
	} elsif ($fs eq 'ext2' || $fs eq 'ext3' && $::isInstall) {
	    if (!$b_rdonly) {
		$o_wait_message->(N("Checking %s", $dev)) if $o_wait_message;
		foreach ('-a', '-y') {
		    run_program::raw({ timeout => 60 * 60 }, "fsck.ext2", $_, $dev);
		    my $err = $?;
		    if ($err & 0x0100) {
			log::l("fsck corrected partition $dev");
		    }
		    if ($err & 0xfeff) {
			my $txt = sprintf("fsck failed on %s with exit code %d or signal %d", $dev, $err >> 8, $err & 255);
			$_ eq '-y' ? die($txt) : cdie($txt);
		    } else {
			last;
		    }
		}
	    }
	    # really mount as ext2 during install for speed up
	    $fs = 'ext2';
	}
	if (member($fs, @fs_modules)) {
	    eval { modules::load($fs) };
	} elsif ($fs eq 'iso9660') {
	    eval { modules::load('isofs') };
	}
	log::l("calling mount($dev, $where, $fs, $flag, $mount_opt)");
	$o_wait_message->(N("Mounting partition %s", $dev)) if $o_wait_message;
	syscall_('mount', $dev, $where, $fs, $flag, $mount_opt) or die \(N("mounting partition %s in directory %s failed", $dev, $where) . " ($!)");
    } else {
	log::l("skipping mounting $fs partition");
	return;
    }
    eval { #- fail silently, /etc must be read-only
	append_to_file("/etc/mtab", "$dev $where $fs defaults 0 0\n");
    };
}

#- takes the mount point to umount (can also be the device)
sub umount {
    my ($mntpoint) = @_;
    $mntpoint =~ s|/$||;
    log::l("calling umount($mntpoint)");
    syscall_('umount', $mntpoint) or die \N("error unmounting %s: %s", $mntpoint, $!);

    substInFile { $_ = '' if /(^|\s)$mntpoint\s/ } '/etc/mtab'; #- don't care about error, if we can't read, we won't manage to write... (and mess mtab)
}

sub mount_part {
    my ($part, $o_prefix, $b_rdonly, $o_wait_message) = @_;

    #- root carrier's link can't be mounted
    loopback::carryRootCreateSymlink($part, $o_prefix);

    log::l("isMounted=$part->{isMounted}, real_mntpoint=$part->{real_mntpoint}, mntpoint=$part->{mntpoint}");
    if ($part->{isMounted} && $part->{real_mntpoint} && $part->{mntpoint}) {
	log::l("remounting partition on $o_prefix$part->{mntpoint} instead of $part->{real_mntpoint}");
	if ($::isInstall) { #- ensure partition will not be busy.
	    require install_any;
	    install_any::getFile('XXX');
	}
	eval {
	    umount($part->{real_mntpoint});
	    rmdir $part->{real_mntpoint};
	    symlinkf "$o_prefix$part->{mntpoint}", $part->{real_mntpoint};
	    delete $part->{real_mntpoint};
	    $part->{isMounted} = 0;
	};
    }

    return if $part->{isMounted};

    unless ($::testing) {
	if (isSwap($part)) {
	    $o_wait_message->(N("Enabling swap partition %s", $part->{device})) if $o_wait_message;
	    swap::swapon($part->{device});
	} else {
	    $part->{mntpoint} or die "missing mount point for partition $part->{device}";

	    my $mntpoint = ($o_prefix || '') . $part->{mntpoint};
	    if (isLoopback($part) || $part->{encrypt_key}) {
		set_loop($part);
	    } elsif (loopback::carryRootLoopback($part)) {
		$mntpoint = "/initrd/loopfs";
	    }
	    my $dev = $part->{real_device} || $part->{device};
	    mount($dev, $mntpoint, type2fs($part), $b_rdonly, $part->{options}, $o_wait_message);
	    rmdir "$mntpoint/lost+found";
	}
    }
    $part->{isMounted} = $part->{isFormatted} = 1; #- assume that if mount works, partition is formatted
}

sub umount_part {
    my ($part, $o_prefix) = @_;

    $part->{isMounted} || $part->{real_mntpoint} or return;

    unless ($::testing) {
	if (isSwap($part)) {
	    swap::swapoff($part->{device});
	} elsif (loopback::carryRootLoopback($part)) {
	    umount("/initrd/loopfs");
	} else {
	    umount(($o_prefix || '') . $part->{mntpoint} || devices::make($part->{device}));
	    devices::del_loop(delete $part->{real_device}) if $part->{real_device};
	}
    }
    $part->{isMounted} = 0;
}

sub umount_all($;$) {
    my ($fstab, $prefix) = @_;

    log::l("unmounting all filesystems");

    foreach (sort { $b->{mntpoint} cmp $a->{mntpoint} } @$fstab) {
	$_->{mntpoint} and umount_part($_, $prefix);
    }
}

################################################################################
# various functions
################################################################################
sub df {
    my ($part, $o_prefix) = @_;
    my $dir = "/tmp/tmp_fs_df";

    return $part->{free} if exists $part->{free};

    if ($part->{isMounted}) {
	$dir = ($o_prefix || '') . $part->{mntpoint};
    } elsif ($part->{notFormatted} && !$part->{isFormatted}) {
	return; #- won't even try!
    } else {
	mkdir_p($dir);
	eval { mount($part->{device}, $dir, type2fs($part), 'readonly') };
	if ($@) {
	    $part->{notFormatted} = 1;
	    $part->{isFormatted} = 0;
	    unlink $dir;
	    return;
	}
    }
    my (undef, $free) = MDK::Common::System::df($dir);

    if (!$part->{isMounted}) {
	umount($dir);
	unlink($dir)
    }

    $part->{free} = 2 * $free if defined $free;
    $part->{free};
}

sub up_mount_point {
    my ($mntpoint, $fstab) = @_;
    while (1) {
	$mntpoint = dirname($mntpoint);
	$mntpoint ne "." or return;
	$_->{mntpoint} eq $mntpoint and return $_ foreach @$fstab;
    }
}

1;