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package urpm::removable;
# $Id: removable.pm 250871 2009-01-06 17:21:05Z pixel $
use strict;
use urpm::msg;
use urpm::sys;
use urpm::util;
use urpm 'file_from_local_medium';
sub file_or_synthesis_dir {
my ($medium, $o_url) = @_;
urpm::media::_valid_synthesis_dir($medium) && !$o_url ?
urpm::media::_synthesis_dir($medium) :
file_from_local_medium($medium, $o_url);
}
sub file_or_synthesis_dir_from_blist {
my ($blist) = @_;
file_or_synthesis_dir($blist->{medium}, _blist_first_url($blist));
}
#- side-effects:
#- + those of try_mounting_medium_ ($medium->{mntpoint})
sub try_mounting_medium {
my ($urpm, $medium, $o_blist) = @_;
my $rc = try_mounting_medium_($urpm, $medium, $o_blist);
$rc or $urpm->{error}(N("unable to access medium \"%s\".", $medium->{name}));
$rc;
}
#- side-effects:
#- + those of urpm::cdrom::try_mounting_cdrom ($urpm->{cdrom_mounted}, $medium->{mntpoint}, "hal_mount")
#- + those of _try_mounting_local ($urpm->{removable_mounted}, "mount")
sub try_mounting_medium_ {
my ($urpm, $medium, $o_blist) = @_;
if (urpm::is_cdrom_url($medium->{url})) {
require urpm::cdrom;
urpm::cdrom::try_mounting_cdrom($urpm, [ { medium => $medium, pkgs => $o_blist && $o_blist->{pkgs} } ]);
} else {
_try_mounting_local($urpm, $medium, $o_blist);
}
}
#- side-effects:
#- + those of _try_mounting_using_fstab ($urpm->{removable_mounted}, "mount")
#- + those of _try_mounting_iso ($urpm->{removable_mounted}, "mount")
sub _try_mounting_local {
my ($urpm, $medium, $o_blist) = @_;
my $dir = file_or_synthesis_dir($medium, $o_blist && _blist_first_url($o_blist));
-e $dir and return 1;
$medium->{iso} ? _try_mounting_iso($urpm, $dir, $medium->{iso}) : _try_mounting_using_fstab($urpm, $dir);
-e $dir;
}
#- side-effects: $urpm->{removable_mounted}, "mount"
sub _try_mounting_iso {
my ($urpm, $dir, $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
my $mntpoint = urpm::sys::trim_until_d($dir);
if ($mntpoint) {
$urpm->{log}(N("mounting %s", $mntpoint));
#- to mount an iso image, grab the first loop device
my $loopdev = urpm::sys::first_free_loopdev();
sys_log("mount iso $mntpoint on $iso");
$loopdev and system('mount', $iso, $mntpoint, '-t', 'iso9660', '-o', "loop=$loopdev");
$urpm->{removable_mounted}{$mntpoint} = undef;
}
-e $mntpoint;
}
#- side-effects: $urpm->{removable_mounted}, "mount"
sub _try_mounting_using_fstab {
my ($urpm, $dir) = @_;
my $mntpoint = _non_mounted_mntpoint($dir);
if ($mntpoint) {
$urpm->{log}(N("mounting %s", $mntpoint));
sys_log("mount $mntpoint");
system("mount '$mntpoint' 2>/dev/null");
$urpm->{removable_mounted}{$mntpoint} = undef;
}
-e $dir;
}
#- side-effects: $urpm->{removable_mounted}, "umount"
sub try_umounting {
my ($urpm, $dir) = @_;
if (my $mntpoint = _mounted_mntpoint($dir)) {
$urpm->{log}(N("unmounting %s", $mntpoint));
sys_log("umount $mntpoint");
system("umount '$mntpoint' 2>/dev/null");
delete $urpm->{removable_mounted}{$mntpoint};
}
! -e $dir;
}
#- side-effects: none
sub _mounted_mntpoint {
my ($dir) = @_;
$dir = reduce_pathname($dir);
my $entry = urpm::sys::find_a_mntpoint($dir);
$entry->{mounted} && $entry->{mntpoint};
}
#- side-effects: none
sub _non_mounted_mntpoint {
my ($dir) = @_;
$dir = reduce_pathname($dir);
my $entry = urpm::sys::find_a_mntpoint($dir);
!$entry->{mounted} && $entry->{mntpoint};
}
#- 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 $urpm->{removable_mounted};
}
#- side-effects:
#- + those of try_mounting_non_cdrom ($urpm->{removable_mounted}, "mount")
sub try_mounting_non_cdroms {
my ($urpm, $blists) = @_;
foreach my $blist (grep { urpm::file_from_local_url($_->{medium}{url}) } @$blists) {
try_mounting_medium($urpm, $blist->{medium}, $blist);
}
}
#- side-effects: none
sub _blist_first_url {
my ($blist) = @_;
my ($pkg) = values %{$blist->{pkgs}} or return;
urpm::blist_pkg_to_url($blist, $pkg);
}
1;
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