1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
package fsedit;
use diagnostics;
use strict;
use common qw(:common);
use partition_table qw(:types);
use partition_table_raw;
use devices;
use log;
1;
my @suggestions = (
{ mntpoint => "/boot", minsize => 10 << 11, size => 16 << 11, type => 0x83 },
{ mntpoint => "/", minsize => 50 << 11, size => 100 << 11, type => 0x83 },
{ mntpoint => "swap", minsize => 30 << 11, size => 60 << 11, type => 0x82 },
{ mntpoint => "/usr", minsize => 200 << 11, size => 500 << 11, type => 0x83 },
{ mntpoint => "/home", minsize => 50 << 11, size => 200 << 11, type => 0x83 },
{ mntpoint => "/var", minsize => 200 << 11, size => 250 << 11, type => 0x83 },
{ mntpoint => "/tmp", minsize => 50 << 11, size => 100 << 11, type => 0x83 },
{ mntpoint => "/mnt/iso", minsize => 700 << 11, size => 800 << 11, type => 0x83 },
);
1;
sub hds($$) {
my ($drives, $flags) = @_;
my @hds;
my $rc;
foreach (@$drives) {
my $file = devices::make($_->{device});
my $hd = partition_table_raw::get_geometry($file) or die "An error occurred while getting the geometry of block device $file: $!";
$hd->{file} = $file;
$hd->{prefix} = $hd->{device} = $_->{device};
# for RAID arrays of format c0d0p1
$hd->{prefix} .= "p" if $hd->{prefix} =~ m,(rd|ida)/,;
eval { $rc = partition_table::read($hd, $flags->{clearall}) };
if ($@) {
$@ =~ /bad magic number/ or die;
partition_table_raw::zero_MBR($hd) if $flags->{eraseBadPartitions};
}
$rc ? push @hds, $hd : log::l("An error occurred reading the partition table for the block device $_->{device}");
}
[ @hds ];
}
sub get_fstab(@) {
map { partition_table::get_normal_parts($_) } @_;
}
sub suggest_part($$$;$) {
my ($hd, $part, $hds, $suggestions) = @_;
$suggestions ||= \@suggestions;
foreach (@$suggestions) { $_->{minsize} ||= $_->{size} }
my $has_swap;
my @mntpoints = map { $has_swap ||= isSwap($_); $_->{mntpoint} } get_fstab(@$hds);
my %mntpoints; @mntpoints{@mntpoints} = undef;
my ($best, $second) =
grep { $part->{size} >= $_->{minsize} }
grep { !exists $mntpoints{$_->{mntpoint}} || isSwap($_) && !$has_swap }
@$suggestions or return;
$best = $second if
$best->{mntpoint} eq '/boot' &&
$part->{start} + $best->{minsize} > 1024 * partition_table::cylinder_size($hd); # if the empty slot is beyond the 1024th cylinder, no use having /boot
defined $best or return; # sorry no suggestion :(
$part->{mntpoint} = $best->{mntpoint};
$part->{type} = $best->{type};
$part->{size} = min($part->{size}, $best->{size});
1;
}
#sub partitionDrives {
#
# my $cmd = "/sbin/fdisk";
# -x $cmd or $cmd = "/usr/bin/fdisk";
#
# my $drives = findDrivesPresent() or die "You don't have any hard drives available! You probably forgot to configure a SCSI controller.";
#
# foreach (@$drives) {
# my $text = "/dev/" . $_->{device};
# $text .= " - SCSI ID " . $_->{id} if $_->{device} =~ /^sd/;
# $text .= " - Model " . $_->{info};
# $text .= " array" if $_->{device} =~ /^c.d/;
#
# # truncate at 50 columns for now
# $text = substr $text, 0, 50;
# }
# #TODO TODO
#}
sub checkMountPoint($$) {
# my $type = shift;
# local $_ = shift;
#
# m|^/| or die "The mount point $_ is illegal.\nMount points must begin with a leading /";
# m|(.)/$| and die "The mount point $_ is illegal.\nMount points may not end with a /";
# c::isprint($_) or die "The mount point $_ is illegal.\nMount points must be made of printable characters (no accents...)";
#
# foreach my $dev (qw(/dev /bin /sbin /etc /lib)) {
# /^$dev/ and die "The $_ directory must be on the root filesystem.",
# }
#
# if ($type eq 'linux_native') {
# $_ eq '/'; and return 1;
# foreach my $r (qw(/var /tmp /boot /root)) {
# /^$r/ and return 1;
# }
# die "The mount point $_ is illegal.\nSystem partitions must be on Linux Native partitions";
# }
# 1;
}
sub removeFromList($$$) {
my ($start, $end, $list) = @_;
my $err = "error in removeFromList: removing an non-free block";
for (my $i = 0; $i < @$list; $i += 2) {
$start < $list->[$i] and die $err;
$start > $list->[$i + 1] and next;
if ($start == $list->[$i]) {
$end > $list->[$i + 1] and die $err;
if ($end == $list->[$i + 1]) {
# the free block is just the same size, removing it
splice(@$list, 0, 2);
} else {
# the free block now start just after this block
$list->[$i] = $end;
}
} else {
$end <= $list->[$i + 1] or die $err;
if ($end < $list->[$i + 1]) {
splice(@$list, $i + 2, 0, $end, $list->[$i + 1]);
}
$list->[$i + 1] = $start; # shorten the free block
}
return;
}
}
sub allocatePartitions($$) {
my ($hds, $to_add) = @_;
my %free_sectors = map { $_->{device} => [1, $_->{totalsectors} ] } @$hds; # first sector is always occupied by the MBR
my $remove = sub { removeFromList($_->{start}, $_->{start} + $_->{size}, $free_sectors{$_->{rootDevice}}) };
my $success = 0;
foreach (get_fstab(@$hds)) { &$remove(); }
FSTAB: foreach (@$to_add) {
foreach my $hd (@$hds) {
my $v = $free_sectors{$hd->{device}};
for (my $i = 0; $i < @$v; $i += 2) {
my $size = $v->[$i + 1] - $v->[$i];
$_->{size} > $size and next;
$_->{start} = $v->[$i];
$_->{rootDevice} = $hd->{device};
partition_table::adjustStartAndEnd($hd, $_);
&$remove();
partition_table::add($hd, $_);
$success++;
next FSTAB;
}
}
log::ld("can't allocate partition $_->{mntpoint} of size $_->{size}, not enough room");
}
$success;
}
sub auto_allocate($;$) {
my ($hds, $suggestions) = @_;
allocatePartitions($hds, $suggestions || \@suggestions);
map { partition_table::assign_device_numbers($_) } @$hds;
}
|
