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#!/usr/bin/perl
#
# Main author Pascal Rigaux (pixel@mandrakesoft.com)
# Put together by Guillaume Cottenceau (gc@mandrakesoft.com)
#
# Copyright 1999,2000,2001 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.
#
#
# This code is extracted from DrakX, the Mandrake Linux graphical installer.
# http://www.mandrakelinux.com/drakx/
# Open development rulz, find CVS here:
# http://www.mandrakelinux.com/cgi-bin/cvsweb.cgi/gi/
#
# Detects partition types using signatures
#
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 arch() {
my $t = `uname -m`;
chomp $t;
$t;
}
# from Perl Cookbook / Pleac
# http://pleac.sourceforge.net/pleac_perl/numbers.html#AEN121
sub commify {
my $text = reverse $_[0];
$text =~ s/(\d\d\d)(?=\d)(?!\d*\.)/$1,/g;
return scalar reverse $text;
}
my @partitions_signatures = (
[ 0x8e, 0, "HM\1\0" ],
[ 0x83, 0x438, "\x53\xEF" ],
[ 0x183, 0x10034, "ReIsErFs" ],
[ 0x183, 0x10034, "ReIsEr2Fs" ],
[ 0x283, 0, 'XFSB', 0x200, 'XAGF', 0x400, 'XAGI' ],
[ 0x383, 0x8000, 'JFS1' ],
[ 0x82, 4086, "SWAP-SPACE" ],
[ 0x82, 4086, "SWAPSPACE2" ],
[ 0x7, 0x1FE, "\x55\xAA", 0x3, "NTFS" ],
[ 0xc, 0x1FE, "\x55\xAA", 0x52, "FAT32" ],
arch() !~ /^sparc/ ? (
[ 0x6, 0x1FE, "\x55\xAA", 0x36, "FAT" ],
) : (),
);
sub typeFromMagic {
my $f = shift;
local *F; sysopen F, $f, 0 or return;
my $tmp;
M: foreach (@partitions_signatures) {
my ($name, @l) = @$_;
while (@l) {
my ($offset, $signature) = splice(@l, 0, 2);
sysseek(F, $offset, 0) or next M;
sysread(F, $tmp, length $signature);
$tmp eq $signature or next M;
}
return $name;
}
return -1;
}
my %type2name = (
0x1 => 'DOS 12-bit FAT',
0x4 => 'DOS 16-bit FAT (up to 32M)',
0x5 => 'DOS 3.3+ Extended Partition',
0x6 => 'DOS FAT16',
0x7 => 'NTFS (or HPFS)',
0xb => 'Win98 FAT32',
0xc => 'Win98 FAT32, LBA-mapped',
0xe => 'Win95: DOS 16-bit FAT, LBA-mapped',
0xf => 'Win95: Extended partition, LBA-mapped',
0x82 => 'Linux Swap',
0x83 => 'Ext2',
0x183 => 'ReiserFS',
0x283 => 'XFS',
0x383 => 'JFS',
0x85 => 'Linux extended partition',
0x87 => 'NTFS volume set',
0x8e => 'Linux LVM',
-1 => 'unknown'
);
my $params = join '', @ARGV;
$params =~ /-h/ and die "usage: lsparts [-v]\n";
$params =~ /-v/ and $verbose = 1;
my (undef, undef, @parts) = cat_('/proc/partitions');
P: foreach (@parts) {
my (undef, undef, $blocks, $dev) = split or next;
my %skip_conditions = (
"Skipping <$dev> because too little blocks ($blocks)" => ($blocks <= 1),
"Skipping <$dev> because doesn't end with a number (e.g. seems to not be a partition)" => ($dev !~ /\d$/),
);
$skip_conditions{$_} and ($verbose and print(STDERR $_, "\n")), next P foreach keys %skip_conditions;
my $type = typeFromMagic("/dev/$dev");
$type and printf "$dev: %6s Mbytes, type <0x%0x> (%s)\n", commify($blocks >> 10), $type, $type2name{$type};
}
#-------------------------------------------------
#- $Log$
#- Revision 1.2 2002/01/10 21:28:15 gc
#- better looking output of type of partition (%x => %0x)
#-
#- Revision 1.1 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
#-
#
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