diff options
Diffstat (limited to 'rescue/lsparts')
| -rwxr-xr-x | rescue/lsparts | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/rescue/lsparts b/rescue/lsparts new file mode 100755 index 000000000..c73e1ad21 --- /dev/null +++ b/rescue/lsparts @@ -0,0 +1,124 @@ +#!/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%x> (%s)\n", commify($blocks >> 10), $type, $type2name{$type}; +} + + +#------------------------------------------------- +#- $Log$ +#- 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 +#- +# |