#!/usr/bin/perl
#
# Guillaume Cottenceau (gc@mandrakesoft.com)
#
# Copyright 2001 MandrakeSoft
#
# This software may be freely redistributed under the terms of the GNU
# public license.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#


sub cat_ { local *F; open F, $_[0] or $_[1] ? die "cat of file $_[0] failed: $!\n" : return; my @l = <F>; wantarray ? @l : join '', @l }
sub chomp_ { my @l = map { my $l = $_; chomp $l; $l } @_; wantarray ? @l : $l[0] }


my @mounts = cat_('/proc/mounts');
grep { (split)[1] =~ m|^/mnt$| } @mounts and print("/mnt is already mounted (according to /proc/mounts)\n"), exit 0;


system('drvinst'); #- class2text seems broken, I can't detect easily only modules for SCSI storage :-(

print "\nPlease wait, trying to find your root device...\n";

my $target = '/mnt';
-d $target || mkdir($target) or die "couldn't create $target\n";


my (undef, undef, @parts) = cat_('/proc/partitions');

my @fstab;
my $root;

M: foreach (@parts) {
    my $dev = (split)[3] or next;
    $dev = "/dev/$dev";

    for my $fs ('ext3', 'ext2', 'reiserfs', 'xfs', 'jfs') {
	my $where = $target;
	if (!system("mount -t $fs $dev $where 2>/dev/null")) {
	    if (-r "$where/etc/fstab" && -r "$where/etc/mandrake-release") {
		print "=> found a Mandrake root partition on $dev\n=> type $fs, version `",
		      chomp_(cat_ "$where/etc/mandrake-release"),
		      "'\n";
		@fstab = cat_("$where/etc/fstab");
		$root = $dev;
		last M;
	    } else {
		system('umount', $where) and die "error unmounting $where\n";
	    }
	    last;
	}
    }
}

if ($root) {
    print "\nMounting other partitions from fstab on $target...\n";
    foreach (@fstab) {
	next if /^\s*#/;
	my ($dev, $where, $type, $opts) = split;
	next if (!$type || $dev eq 'none' || $opts =~ /noauto/ ||
                 $type =~ /^(supermount|swap|nfs)$/ ||
                 $where eq '/' ||
                 $where =~ m,proc|cdrom|floppy|/mnt/zip,
		 );
	$opts = join(',', grep { !/codepage=/ && !/iocharset/ } split(',', $opts)); #- vfat opts, we don't have the modules in rescue
	$where = "$target$where";
	-d $where || mkdir($where) or die "couldn't create $where\n";
	print "\t$dev on $where type $type\n";
	system("mount -t $type $dev $where -o $opts");
    }
    print "\nYour system is ready on $target.\n\n";
} else {
    die "Could not find your root device :-(.\n";
}



#-------------------------------------------------
#- $Log$
#- Revision 1.5  2001/11/05 17:03:54  gc
#- honours hash in /etc/fstab to disable lines
#-
#- Revision 1.4  2001/10/24 22:34:01  gc
#- - add a GUI to the rescue
#-   - provide guessmounts with better efficiency and output, go to console, and reboot
#-   - provide install_bootloader which runs lilo from /mnt if it seems safe
#- - add lsparts to rescue, which prints partitions with detected types
#-
#- Revision 1.3  2001/09/07 18:22:54  gc
#- ext3, xfs, jfs
#-
#- Revision 1.2  2001/06/10 22:41:21  prigaux
#- pixelization (tested!)
#-
#- Revision 1.1  2001/06/10 21:08:33  gc
#- - add 'guessmounts' that mimics RH's detecting of partitions when rescue starts
#-
#-