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package urpm::removable;
# $Id$
use urpm::msg;
use urpm::sys;
use urpm::util;
use urpm 'file_from_local_url';
#- returns the removable device name if it corresponds to an iso image, '' otherwise
#-
#- side-effects: none
sub is_iso {
my ($removable_dev) = @_;
$removable_dev && $removable_dev =~ /\.iso$/i;
}
#- side-effects: $urpm->{removable_mounted}, mount
sub try_mounting {
my ($urpm, $dir, $o_removable) = @_;
my %infos;
my $is_iso = is_iso($o_removable);
my @mntpoints = $is_iso
#- note: for isos, we don't parse the fstab because it might not be declared in it.
#- so we try to remove suffixes from the dir name until the dir exists
? ($dir = urpm::sys::trim_until_d($dir))
: urpm::sys::find_mntpoints($dir = reduce_pathname($dir), \%infos);
foreach (grep { ! $infos{$_}{mounted} } @mntpoints) {
$urpm->{log}(N("mounting %s", $_));
if ($is_iso) {
#- to mount an iso image, grab the first loop device
my $loopdev = urpm::sys::first_free_loopdev();
sys_log("mount iso $_ on $o_removable");
$loopdev and system('mount', $o_removable, $_, '-t', 'iso9660', '-o', "loop=$loopdev");
} else {
sys_log("mount $_");
system("mount '$_' 2>/dev/null");
}
$o_removable and $urpm->{removable_mounted}{$_} = undef;
}
-e $dir;
}
#- side-effects: $urpm->{removable_mounted}, umount
sub try_umounting {
my ($urpm, $dir) = @_;
$dir = reduce_pathname($dir);
foreach (reverse _mounted_mntpoints($dir)) {
$urpm->{log}(N("unmounting %s", $_));
sys_log("umount $_");
system("umount '$_' 2>/dev/null");
delete $urpm->{removable_mounted}{$_};
}
! -e $dir;
}
#- side-effects: none
sub _mounted_mntpoints {
my ($dir) = @_;
my %infos;
grep { $infos{$_}{mounted} } urpm::sys::find_mntpoints($dir, \%infos);
}
#- side-effects: $urpm->{removable_mounted}
#- + those of try_umounting ($urpm->{removable_mounted}, umount)
sub try_umounting_removables {
my ($urpm) = @_;
foreach (keys %{$urpm->{removable_mounted}}) {
try_umounting($urpm, $_);
}
delete $urpm->{removable_mounted};
}
#- examine if given medium is already inside a removable device.
#-
#- side-effects:
#- + those of try_mounting ($urpm->{removable_mounted}, mount)
sub _check_notfound {
my ($urpm, $medium_list, $dir, $removable) = @_;
if ($dir) {
try_mounting($urpm, $dir, $removable);
-e $dir or return 2;
}
foreach (values %$medium_list) {
my $dir_ = _filepath($_) or next;
if (!$dir) {
$dir = $dir_;
try_mounting($urpm, $dir, $removable);
}
-r $dir_ or return 1;
}
0;
}
#- removable media have to be examined to keep mounted the one that has
#- more packages than others.
sub _examine_removable_medium {
my ($urpm, $list, $sources, $id, $device, $o_ask_for_medium) = @_;
my $medium = $urpm->{media}[$id];
if (file_from_local_url($medium->{url})) {
_examine_removable_medium_($urpm, $medium, $list->[$id], $sources, $device, $o_ask_for_medium);
} else {
#- we have a removable device that is not removable, well...
$urpm->{error}(N("inconsistent medium \"%s\" marked removable but not really", $medium->{name}));
}
}
sub _mount_it {
my ($urpm, $medium, $medium_list, $device, $o_ask_for_medium) = @_;
my $dir = file_from_local_url($medium->{url});
#- the directory given does not exist and may be accessible
#- by mounting some other directory. Try to figure it out and mount
#- everything that might be necessary.
while (_check_notfound($urpm, $medium_list, $dir, is_iso($medium->{removable}) ? $medium->{removable} : 'removable')) {
is_iso($medium->{removable}) || $o_ask_for_medium
or $urpm->{fatal}(4, N("medium \"%s\" is not available", $medium->{name}));
try_umounting($urpm, $dir);
system("/usr/bin/eject '$device' 2>/dev/null");
is_iso($medium->{removable})
|| $o_ask_for_medium->(remove_internal_name($medium->{name}), $medium->{removable})
or $urpm->{fatal}(4, N("medium \"%s\" is not available", $medium->{name}));
}
}
sub _filepath {
my ($url) = @_;
chomp $url;
my $filepath = file_from_local_url($url) or return;
$filepath =~ m!/.*/! or return; #- is this really needed??
$filepath;
}
sub _examine_removable_medium_ {
my ($urpm, $medium, $medium_list, $sources, $device, $o_ask_for_medium) = @_;
_mount_it($urpm, $medium, $medium_list, $device, $o_ask_for_medium);
my $dir = file_from_local_url($medium->{url});
if (-e $dir) {
while (my ($i, $url) = each %$medium_list) {
my $filepath = _filepath($url) or next;
if (-r $filepath) {
#- we should assume a possibly buggy removable device...
#- First, copy in partial cache, and if the package is still good,
#- transfer it to the rpms cache.
my $filename = basename($filepath);
unlink "$urpm->{cachedir}/partial/$filename";
$urpm->{log}("copying $filepath");
if (copy_and_own($filepath, "$urpm->{cachedir}/partial/$filename") &&
URPM::verify_rpm("$urpm->{cachedir}/partial/$filename", nosignatures => 1))
{
#- now we can consider the file to be fine.
unlink "$urpm->{cachedir}/rpms/$filename";
urpm::sys::move_or_die($urpm, "$urpm->{cachedir}/partial/$filename", "$urpm->{cachedir}/rpms/$filename");
$sources->{$i} = "$urpm->{cachedir}/rpms/$filename";
}
}
if (!$sources->{$i}) {
#- fallback to use other method for retrieving the file later.
$urpm->{error}(N("unable to read rpm file [%s] from medium \"%s\"", $filepath, $medium->{name}));
}
}
} else {
$urpm->{error}(N("medium \"%s\" is not available", $medium->{name}));
}
}
sub _get_removables_or_check_mounted {
my ($urpm, $list) = @_;
my %removables;
foreach (0..$#$list) {
values %{$list->[$_]} or next;
my $medium = $urpm->{media}[$_];
#- examine non removable device but that may be mounted.
if ($medium->{removable}) {
push @{$removables{$medium->{removable}} ||= []}, $_;
} elsif (my $dir = file_from_local_url($medium->{url})) {
-e $dir || try_mounting($urpm, $dir) or
$urpm->{error}(N("unable to access medium \"%s\"", $medium->{name})), next;
}
}
%removables;
}
#- $list is a [ { pkg_id1 => url1, ... }, { ... }, ... ]
#- where there is one hash for each medium in {media}
sub copy_packages_of_removable_media {
my ($urpm, $list, $sources, $o_ask_for_medium) = @_;
#- make sure everything is correct on input...
$urpm->{media} or return;
@{$urpm->{media}} == @$list or return;
my %removables = _get_removables_or_check_mounted($urpm, $list);
foreach my $device (keys %removables) {
next if $device =~ m![^a-zA-Z0-9_./-]!; #- bad path
#- Here we have only removable devices.
#- If more than one media uses this device, we have to sort
#- needed packages to copy the needed rpm files.
if (@{$removables{$device}} > 1) {
my @sorted_media = sort { values(%{$list->[$a]}) <=> values(%{$list->[$b]}) } @{$removables{$device}};
#- check if a removable device is already mounted (and files present).
if (my ($already_mounted_medium) = grep { !_check_notfound($urpm, $list->[$_]) } @sorted_media) {
@sorted_media = ($already_mounted_medium,
grep { $_ ne $already_mounted_medium } @sorted_media);
}
#- mount all except the biggest one.
my $biggest = pop @sorted_media;
foreach (@sorted_media) {
_examine_removable_medium($urpm, $list, $sources, $_, $device, $o_ask_for_medium);
}
#- now mount the last one...
$removables{$device} = [ $biggest ];
}
_examine_removable_medium($urpm, $list, $sources, $removables{$device}[0], $device, $o_ask_for_medium);
}
1;
}
1;
|
