add mes5-2.6.33 branch

1 files changed, 290 insertions, 0 deletions

diff --git a/perl-install/partition_table/raw.pm b/perl-install/partition_table/raw.pm
new file mode 100644
index 000000000..a43cdc2ee
--- /dev/null
+++ b/perl-install/partition_table/raw.pm
@@ -0,0 +1,290 @@
+package partition_table::raw; # $Id: raw.pm 244309 2008-08-21 14:36:52Z pixel $
+
+use diagnostics;
+use strict;
+
+use common;
+use devices;
+use detect_devices;
+use fs::type;
+use log;
+use c;
+
+my @MBR_signatures = (
+if_(arch() =~ /ppc/,
+    (map { [ 'yaboot', 0, "PM", 0x200 * $_ + 0x10, "bootstrap\0" ] } 0 .. 61), #- "PM" is a Partition Map
+    [ 'yaboot', 0x400, "BD", 0x424, "\011bootstrap" ], #- "BD" is a HFS filesystem
+),
+    [ 'empty', 0, "\0\0\0\0" ],
+    [ 'grub', 0, "\xEBG", 0x17d, "stage1 \0" ],
+    [ 'grub', 0, "\xEBH", 0x17e, "stage1 \0" ],
+    [ 'grub', 0, "\xEBH", 0x18a, "stage1 \0" ],
+    sub { my ($F) = @_;
+	  #- standard grub has no good magic (Mandriva's grub is patched to have "GRUB" at offset 6)
+	  #- so scanning a range of possible places where grub can have its string
+	  #- 0x176 found on Conectiva 10
+	  my ($min, $max, $magic) = (0x176, 0x181, "GRUB \0");
+	  my $tmp;
+	  sysseek($F, 0, 0) && sysread($F, $tmp, $max + length($magic)) or return;
+	  substr($tmp, 0, 2) eq "\xEBH" or return;
+	  index($tmp, $magic, $min) >= 0 && "grub";
+      },
+    [ 'lilo', 0x2,  "LILO" ],
+    [ 'lilo', 0x6,  "LILO" ],
+    [ 'lilo', 0x6 + 0x40,  "LILO" ], #- when relocated in lilo's bsect_update(), variable "space" on paragraph boundary gives 0x40
+    [ 'grub', 0x6,  "GRUB" ],
+    [ 'osbs', 0x2,  "OSBS" ], #- http://www.prz.tu-berlin.de/~wolf/os-bs.html
+    [ 'pqmagic', 0xef, "PQV" ],
+    [ 'BootStar', 0x130, "BootStar:" ],
+    [ 'DocsBoot', 0x148, 'DocsBoot' ],
+    [ 'system_commander', 0x1ad, "SYSCMNDRSYS" ],
+    [ 'Be Os', 0x24, 'Boot Manager' ],
+    [ 'os2', 0, "\xFA\xB8\x30\x00", 0xfA, "OS/2" ],
+    [ 'TimO', 0, 'IBM Thinkpad hibernation partition' ],
+    [ 'dos', 0xa0, "\x25\x03\x4E\x02\xCD\x13" ],
+    [ 'dos', 0xa0, "\x00\xB4\x08\xCD\x13\x72" ], #- nt2k's
+    [ 'dos', 0x60, "\xBB\x00\x7C\xB8\x01\x02\x57\xCD\x13\x5F\x73\x0C\x33\xC0\xCD\x13" ], #- nt's
+    [ 'dos', 0x70, "\x0C\x33\xC0\xCD\x13\x4F\x75\xED\xBE\xA3" ],
+    [ 'freebsd', 0xC0, "\x00\x30\xE4\xCD\x16\xCD\x19\xBB\x07\x00\xB4" ],
+    [ 'freebsd', 0x160, "\x6A\x10\x89\xE6\x48\x80\xCC\x40\xCD\x13" ],
+    [ 'dummy', 0xAC, "\x0E\xB3\x07\x56\xCD\x10\x5E\xEB" ], #- caldera?
+    [ 'ranish', 0x100, "\x6A\x10\xB4\x42\x8B\xF4\xCD\x13\x8B\xE5\x73" ],
+    [ 'os2', 0x1c2, "\x0A" ],
+    [ 'Acronis', 0, "\xE8\x12\x01" ],
+);
+
+sub typeOfMBR($) { typeFromMagic(devices::make($_[0]), @MBR_signatures) }
+sub typeOfMBR_($) { typeFromMagic($_[0], @MBR_signatures) }
+
+sub use_pt_type { 0 }
+sub hasExtended { 0 }
+sub set_best_geometry_for_the_partition_table {}
+
+sub cylinder_size($) {
+    my ($hd) = @_;
+    $hd->{geom}{sectors} * $hd->{geom}{heads};
+}
+sub first_usable_sector { 1 }
+sub last_usable_sector { 
+    my ($hd) = @_;
+    $hd->{totalsectors};
+}
+# no limit
+sub max_partition_start { 1e99 }
+sub max_partition_size { 1e99 }
+
+#- default method for starting a partition, only head size or twice
+#- is allowed for starting a partition after a cylinder boundarie.
+sub adjustStart($$) {
+    my ($hd, $part) = @_;
+    my $end = $part->{start} + $part->{size};
+
+    $part->{start} = round_up($part->{start},
+			      $part->{start} % cylinder_size($hd) < 2 * $hd->{geom}{sectors} ?
+   			      $hd->{geom}{sectors} : cylinder_size($hd));
+    $part->{size} = $end - $part->{start};
+    $part->{size} > 0 or die "adjustStart get a too small partition to handle correctly";
+}
+#- adjusting end to match a cylinder boundary, two methods are used and must
+#- match at the end, else something is wrong and nothing will be done on
+#- partition table.
+#- $end2 is computed by removing 2 (or only 1 if only 2 heads on drive) groups
+#- of sectors, this is necessary to handle extended partition where logical
+#- partition start after 1 (or 2 accepted) groups of sectors (typically 63).
+#- $end is floating (is not on cylinder boudary) so we have to choice a good
+#- candidate, $end1 or $end2 should always be good except $end1 for small
+#- partition size.
+sub adjustEnd($$) {
+    my ($hd, $part) = @_;
+    my $end = $part->{start} + $part->{size};
+    $end > $hd->{geom}{cylinders} * cylinder_size($hd) && $end <= $hd->{totalsectors} and return;
+    my $end1 = round_down($end, cylinder_size($hd));
+    my $end2 = round_up($end - ($hd->{geom}{heads} > 2 ? 2 : 1) * $hd->{geom}{sectors}, cylinder_size($hd));
+    $end2 <= $hd->{geom}{cylinders} * cylinder_size($hd) or die "adjustEnd go beyond end of device geometry ($end2 > $hd->{totalsectors})";
+    $part->{size} = ($end1 - $part->{start} > cylinder_size($hd) ? $end1 : $end2) - $part->{start};
+    $part->{size} > 0 or internal_error("adjustEnd get a too small partition to handle correctly");
+}
+
+sub compute_nb_cylinders {
+    my ($geom, $totalsectors) = @_;
+    if ($geom->{heads} && $geom->{sectors}) {
+	$geom->{cylinders} = int $totalsectors / $geom->{heads} / $geom->{sectors};
+    }
+}
+
+sub keep_non_duplicates {
+    my %l;
+    $l{$_->[0]}++ foreach @_;
+    map { @$_ } grep { $l{$_->[0]} == 1 } @_;
+}
+
+sub get_geometries {
+    my (@hds) = @_;
+
+    @hds = grep {
+	if (my $h = get_geometry($_->{file})) {
+	    add2hash_($_, $h);
+	    1;
+	} else {
+	    log::l("An error occurred while getting the geometry of block device $_->{file}: $!");
+	    0;
+	}
+    } @hds;
+
+    my %id2hd = keep_non_duplicates(map {
+	my $F = openit($_) or log::l("failed to open device $_->{device}");
+	my $tmp;
+	if ($F && c::lseek_sector(fileno($F), 0, 0x1b8) && sysread($F, $tmp, 4)) {
+	    [ sprintf('0x%08x', unpack('V', $tmp)), $_ ];
+	} else {
+	    ();
+	}
+    } @hds);
+
+
+    my %id2edd = keep_non_duplicates(map { [ scalar(chomp_(cat_("$_/mbr_signature"))), $_ ] } glob("/sys/firmware/edd/int13_dev*"));
+
+    log::l("id2hd: " . join(' ', map_each { "$::a=>$::b->{device}" } %id2hd));
+    log::l("id2edd: " . join(' ', map_each { "$::a=>$::b" } %id2edd));
+
+    foreach my $id (keys %id2hd) {
+	my $hd = $id2hd{$id};
+	$hd->{volume_id} = $id;
+
+	if (my $edd_dir = $id2edd{$id}) {
+	    $hd->{bios_from_edd} = $1 if $edd_dir =~ /int13_dev(.*)/;
+
+	    require partition_table::dos;
+	    my $geom = partition_table::dos::geometry_from_edd($hd, $edd_dir);
+	    $hd->{geom} = $geom if $geom;
+	}
+    }
+
+    @hds;
+}
+
+sub get_geometry {
+    my ($dev) = @_;
+    sysopen(my $F, $dev, 0) or return;
+
+    my $total = c::total_sectors(fileno $F);
+
+    my $g = "";
+    my %geom;
+    if (ioctl($F, c::HDIO_GETGEO(), $g)) {
+	@geom{qw(heads sectors cylinders start)} = unpack "CCSL", $g;
+	log::l("HDIO_GETGEO on $dev succeeded: heads=$geom{heads} sectors=$geom{sectors} cylinders=$geom{cylinders} start=$geom{start}");
+	$geom{totalcylinders} = $geom{cylinders};
+
+	#- $geom{cylinders} is no good (only a ushort, that means less than 2^16 => at best 512MB)
+	if ($total) {
+	    compute_nb_cylinders(\%geom, $total);
+	} else {
+	    $total = $geom{heads} * $geom{sectors} * $geom{cylinders};
+	}
+    }
+
+    { totalsectors => $total, if_($geom{heads}, geom => \%geom) };
+}
+
+sub openit { 
+    my ($hd, $o_mode) = @_;
+    my $F; sysopen($F, $hd->{file}, $o_mode || 0) && $F;
+}
+
+sub can_add {
+    my ($hd) = @_;
+    !$_->{size} && !$_->{pt_type} || isExtended($_) and return 1 foreach @{$hd->{primary}{raw}};
+    0;
+}
+
+sub raw_removed {
+    my ($_hd, $_raw) = @_;
+}
+sub can_raw_add {
+    my ($hd) = @_;
+    $_->{size} || $_->{pt_type} or return 1 foreach @{$hd->{primary}{raw}};
+    0;
+}
+sub raw_add {
+    my ($_hd, $raw, $part) = @_;
+
+    foreach (@$raw) {
+	$_->{size} || $_->{pt_type} and next;
+	$_ = $part;
+	return;
+    }
+    die "raw_add: partition table already full";
+}
+
+sub zero_MBR { &partition_table::initialize } #- deprecated
+
+sub clear_existing {
+    my ($hd) = @_;
+    my @parts = (partition_table::get_normal_parts($hd), if_($hd->{primary}{extended}, $hd->{primary}{extended}));
+    partition_table::will_tell_kernel($hd, del => $_) foreach @parts;
+}
+
+#- deprecated
+sub zero_MBR_and_dirty { 
+    my ($hd) = @_;
+    fsedit::partition_table_clear_and_initialize([], $hd);
+}
+
+sub read_primary {
+    my ($hd) = @_;
+
+    my ($pt, $info) = eval { $hd->read_one(0) } or return;
+    my $primary = partition_table::raw::pt_info_to_primary($hd, $pt, $info);
+    $hd->{primary} = $primary;
+    undef $hd->{extended};
+    partition_table::verifyPrimary($primary);
+    1;
+}
+
+sub pt_info_to_primary {
+    my ($hd, $pt, $info) = @_;
+
+    my @extended = $hd->hasExtended ? grep { isExtended($_) } @$pt : ();
+    my @normal = grep { $_->{size} && !isEmpty($_) && !isExtended($_) } @$pt;
+    my $nb_special_empty = int(grep { $_->{size} && isEmpty($_) } @$pt);
+
+    @extended > 1 and die "more than one extended partition";
+
+    put_in_hash($_, partition_table::hd2minimal_part($hd)) foreach @normal, @extended;
+    { raw => $pt, extended => $extended[0], normal => \@normal, info => $info, nb_special_empty => $nb_special_empty };
+}
+
+#- ugly stuff needed mainly for Western Digital IDE drives
+#- try writing what we've just read, yells if it fails
+#- testing on last sector of head #0 (unused in 99% cases)
+#-
+#- return false if the device can not be written to (especially for Smartmedia)
+sub test_for_bad_drives {
+    my ($hd) = @_;
+
+    my $sector = $hd->{geom} ? $hd->{geom}{sectors} - 1 : 0;
+    log::l("test_for_bad_drives($hd->{file} on sector #$sector)");
+    
+    sub error { die "$_[0] error: $_[1]" }
+
+    my $F = openit($hd, $::testing ? 0 : 2) or error(openit($hd) ? 'write' : 'read', "can not open device");
+
+    my $seek = sub {
+	c::lseek_sector(fileno($F), $sector, 0) or error('read', "seeking to sector $sector failed");
+    };
+    my $tmp;
+
+    &$seek; sysread $F, $tmp, $SECTORSIZE or error('read', "can not even read ($!)");
+    return if $hd->{readonly} || $::testing;
+    &$seek; syswrite $F, $tmp or error('write', "can not even write ($!)");
+
+    my $tmp2;
+    &$seek; sysread $F, $tmp2, $SECTORSIZE or die "test_for_bad_drives: can not even read again ($!)";
+    $tmp eq $tmp2 or die
+N("Something bad is happening on your drive. 
+A test to check the integrity of data has failed. 
+It means writing anything on the disk will end up with random, corrupted data.");
+}
+
+1;