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Commit | Line | Data |
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7af97ad5 | 1 | package PVE::LXC::Create; |
5b4657d0 DM |
2 | |
3 | use strict; | |
4 | use warnings; | |
5 | use File::Basename; | |
6 | use File::Path; | |
7 | use Data::Dumper; | |
07084526 | 8 | use Fcntl; |
5b4657d0 DM |
9 | |
10 | use PVE::Storage; | |
11 | use PVE::LXC; | |
7af97ad5 | 12 | use PVE::LXC::Setup; |
f507c3a7 | 13 | use PVE::VZDump::ConvertOVZ; |
580b6916 | 14 | use PVE::Tools; |
dc6e862c | 15 | use POSIX; |
5b4657d0 | 16 | |
fbb31447 TL |
17 | sub detect_architecture { |
18 | my ($rootdir) = @_; | |
dc6e862c | 19 | |
e1d54a38 DM |
20 | # see https://en.wikipedia.org/wiki/Executable_and_Linkable_Format |
21 | ||
22 | my $supported_elf_machine = { | |
23 | 0x03 => 'i386', | |
24 | 0x3e => 'amd64', | |
25 | 0x28 => 'armhf', | |
26 | 0xb7 => 'arm64', | |
fbb31447 | 27 | }; |
dc6e862c | 28 | |
fbb31447 TL |
29 | my $elf_fn = '/bin/sh'; # '/bin/sh' is POSIX mandatory |
30 | my $detect_arch = sub { | |
dc6e862c TL |
31 | # chroot avoids a problem where we check the binary of the host system |
32 | # if $elf_fn is an absolut symlink (e.g. $rootdir/bin/sh -> /bin/bash) | |
33 | chroot($rootdir) or die "chroot '$rootdir' failed: $!\n"; | |
34 | chdir('/') or die "failed to change to root directory\n"; | |
35 | ||
fbb31447 | 36 | open(my $fh, "<", $elf_fn) or die "open '$elf_fn' failed: $!\n"; |
dc6e862c TL |
37 | binmode($fh); |
38 | ||
e1d54a38 | 39 | my $length = read($fh, my $data, 20) or die "read failed: $!\n"; |
dc6e862c | 40 | |
e1d54a38 DM |
41 | # 4 bytes ELF magic number and 1 byte ELF class, padding, machine |
42 | my ($magic, $class, undef, $machine) = unpack("A4CA12n", $data); | |
dc6e862c TL |
43 | |
44 | die "'$elf_fn' does not resolve to an ELF!\n" | |
45 | if (!defined($class) || !defined($magic) || $magic ne "\177ELF"); | |
46 | ||
e1d54a38 DM |
47 | my $arch = $supported_elf_machine->{$machine}; |
48 | die "'$elf_fn' has unknown ELF machine '$machine'!\n" | |
49 | if !defined($arch); | |
dc6e862c | 50 | |
e1d54a38 | 51 | return $arch; |
fbb31447 | 52 | }; |
dc6e862c | 53 | |
fbb31447 TL |
54 | my $arch = eval { PVE::Tools::run_fork_with_timeout(5, $detect_arch) }; |
55 | if (my $err = $@) { | |
56 | $arch = 'amd64'; | |
57 | print "Architecture detection failed: $err\nFalling back to amd64.\n" . | |
58 | "Use `pct set VMID --arch ARCH` to change.\n"; | |
dc6e862c | 59 | } else { |
fbb31447 | 60 | print "Detected container architecture: $arch\n"; |
dc6e862c TL |
61 | } |
62 | ||
fbb31447 | 63 | return $arch; |
dc6e862c TL |
64 | } |
65 | ||
5b4657d0 | 66 | sub restore_archive { |
f9b4407e | 67 | my ($archive, $rootdir, $conf, $no_unpack_error, $bwlimit) = @_; |
5b4657d0 | 68 | |
c6a605f9 | 69 | my ($id_map, $rootuid, $rootgid) = PVE::LXC::parse_id_maps($conf); |
01dce99b | 70 | my $userns_cmd = PVE::LXC::userns_command($id_map); |
5b4657d0 | 71 | |
07084526 | 72 | my $archive_fh; |
f70a3d47 WB |
73 | my $tar_input = '<&STDIN'; |
74 | my @compression_opt; | |
07084526 | 75 | if ($archive ne '-') { |
f70a3d47 WB |
76 | # GNU tar refuses to autodetect this... *sigh* |
77 | my %compression_map = ( | |
78 | '.gz' => '-z', | |
79 | '.bz2' => '-j', | |
80 | '.xz' => '-J', | |
a3bdf0c9 | 81 | '.lzo' => '--lzop', |
f70a3d47 WB |
82 | ); |
83 | if ($archive =~ /\.tar(\.[^.]+)?$/) { | |
84 | if (defined($1)) { | |
85 | @compression_opt = $compression_map{$1} | |
86 | or die "unrecognized compression format: $1\n"; | |
87 | } | |
88 | } else { | |
89 | die "file does not look like a template archive: $archive\n"; | |
90 | } | |
07084526 WB |
91 | sysopen($archive_fh, $archive, O_RDONLY) |
92 | or die "failed to open '$archive': $!\n"; | |
07084526 WB |
93 | my $flags = $archive_fh->fcntl(Fcntl::F_GETFD(), 0); |
94 | $archive_fh->fcntl(Fcntl::F_SETFD(), $flags & ~(Fcntl::FD_CLOEXEC())); | |
f70a3d47 | 95 | $tar_input = '<&'.fileno($archive_fh); |
07084526 WB |
96 | } |
97 | ||
f70a3d47 | 98 | my $cmd = [@$userns_cmd, 'tar', 'xpf', '-', @compression_opt, '--totals', |
5fa038ab | 99 | @PVE::Storage::Plugin::COMMON_TAR_FLAGS, |
fc4e132e | 100 | '-C', $rootdir]; |
5b4657d0 | 101 | |
112aeeb4 WB |
102 | # skip-old-files doesn't have anything to do with time (old/new), but is |
103 | # simply -k (annoyingly also called --keep-old-files) without the 'treat | |
104 | # existing files as errors' part... iow. it's bsdtar's interpretation of -k | |
105 | # *sigh*, gnu... | |
106 | push @$cmd, '--skip-old-files'; | |
5b4657d0 DM |
107 | push @$cmd, '--anchored'; |
108 | push @$cmd, '--exclude' , './dev/*'; | |
109 | ||
f9b4407e WB |
110 | if (defined($bwlimit)) { |
111 | $cmd = [ ['cstream', '-t', $bwlimit*1024], $cmd ]; | |
112 | } | |
113 | ||
6034ae50 DM |
114 | if ($archive eq '-') { |
115 | print "extracting archive from STDIN\n"; | |
27916659 | 116 | } else { |
6034ae50 | 117 | print "extracting archive '$archive'\n"; |
27916659 | 118 | } |
f70a3d47 | 119 | eval { PVE::Tools::run_command($cmd, input => $tar_input); }; |
07084526 WB |
120 | my $err = $@; |
121 | close($archive_fh) if defined $archive_fh; | |
122 | die $err if $err && !$no_unpack_error; | |
f31bd6ae DC |
123 | |
124 | # if arch is set, we do not try to autodetect it | |
125 | return if defined($conf->{arch}); | |
126 | ||
fbb31447 | 127 | $conf->{arch} = detect_architecture($rootdir); |
5b4657d0 DM |
128 | } |
129 | ||
f507c3a7 | 130 | sub recover_config { |
effa4f43 | 131 | my ($archive) = @_; |
f507c3a7 | 132 | |
0550795a | 133 | my ($raw, $conf_file) = PVE::Storage::extract_vzdump_config_tar($archive, qr!(\./etc/vzdump/(pct|vps)\.conf)$!); |
effa4f43 | 134 | my $conf; |
db18c1e4 | 135 | my $mp_param = {}; |
f507c3a7 | 136 | |
27916659 | 137 | if ($conf_file =~ m/pct\.conf/) { |
f507c3a7 | 138 | |
1b4cf758 | 139 | $conf = PVE::LXC::Config::parse_pct_config("/lxc/0.conf" , $raw); |
f507c3a7 | 140 | |
27916659 | 141 | delete $conf->{snapshots}; |
bb1ac2de | 142 | delete $conf->{template}; # restored CT is never a template |
db18c1e4 FG |
143 | |
144 | PVE::LXC::Config->foreach_mountpoint($conf, sub { | |
145 | my ($ms, $mountpoint) = @_; | |
146 | $mp_param->{$ms} = $conf->{$ms}; | |
147 | }); | |
148 | ||
effa4f43 | 149 | } elsif ($conf_file =~ m/vps\.conf/) { |
db18c1e4 FG |
150 | |
151 | ($conf, $mp_param) = PVE::VZDump::ConvertOVZ::convert_ovz($raw); | |
152 | ||
effa4f43 DM |
153 | } else { |
154 | ||
27916659 | 155 | die "internal error"; |
f507c3a7 WL |
156 | } |
157 | ||
db18c1e4 | 158 | return wantarray ? ($conf, $mp_param) : $conf; |
f507c3a7 WL |
159 | } |
160 | ||
51665c2d | 161 | sub restore_configuration { |
43912111 | 162 | my ($vmid, $rootdir, $conf, $restricted, $unique) = @_; |
51665c2d FG |
163 | |
164 | # restore: try to extract configuration from archive | |
165 | ||
166 | my $pct_cfg_fn = "$rootdir/etc/vzdump/pct.conf"; | |
167 | my $pct_fwcfg_fn = "$rootdir/etc/vzdump/pct.fw"; | |
168 | my $ovz_cfg_fn = "$rootdir/etc/vzdump/vps.conf"; | |
169 | if (-f $pct_cfg_fn) { | |
170 | my $raw = PVE::Tools::file_get_contents($pct_cfg_fn); | |
171 | my $oldconf = PVE::LXC::Config::parse_pct_config("/lxc/$vmid.conf", $raw); | |
172 | ||
173 | foreach my $key (keys %$oldconf) { | |
adcaa73e | 174 | next if $key eq 'digest' || $key eq 'rootfs' || $key eq 'snapshots' || $key eq 'unprivileged' || $key eq 'parent'; |
51665c2d FG |
175 | next if $key =~ /^mp\d+$/; # don't recover mountpoints |
176 | next if $key =~ /^unused\d+$/; # don't recover unused disks | |
ba0e2930 FG |
177 | if ($restricted && $key eq 'lxc') { |
178 | warn "skipping custom lxc options, restore manually as root:\n"; | |
179 | warn "--------------------------------\n"; | |
180 | my $lxc_list = $oldconf->{'lxc'}; | |
181 | foreach my $lxc_opt (@$lxc_list) { | |
182 | warn "$lxc_opt->[0]: $lxc_opt->[1]\n" | |
183 | } | |
184 | warn "--------------------------------\n"; | |
185 | next; | |
186 | } | |
1fe49f62 | 187 | if ($unique && $key =~ /^net\d+$/) { |
43912111 CE |
188 | my $net = PVE::LXC::Config->parse_lxc_network($oldconf->{$key}); |
189 | my $dc = PVE::Cluster::cfs_read_file('datacenter.cfg'); | |
190 | $net->{hwaddr} = PVE::Tools::random_ether_addr($dc->{mac_prefix}); | |
191 | $conf->{$key} = PVE::LXC::Config->print_lxc_network($net); | |
192 | next; | |
193 | } | |
51665c2d FG |
194 | $conf->{$key} = $oldconf->{$key} if !defined($conf->{$key}); |
195 | } | |
196 | unlink($pct_cfg_fn); | |
5b4657d0 | 197 | |
51665c2d FG |
198 | if (-f $pct_fwcfg_fn) { |
199 | my $pve_firewall_dir = '/etc/pve/firewall'; | |
200 | mkdir $pve_firewall_dir; # make sure the directory exists | |
201 | PVE::Tools::file_copy($pct_fwcfg_fn, "${pve_firewall_dir}/$vmid.fw"); | |
202 | unlink $pct_fwcfg_fn; | |
27916659 | 203 | } |
5b4657d0 | 204 | |
51665c2d FG |
205 | } elsif (-f $ovz_cfg_fn) { |
206 | print "###########################################################\n"; | |
207 | print "Converting OpenVZ configuration to LXC.\n"; | |
208 | print "Please check the configuration and reconfigure the network.\n"; | |
209 | print "###########################################################\n"; | |
148d1cb4 | 210 | |
51665c2d FG |
211 | my $lxc_setup = PVE::LXC::Setup->new($conf, $rootdir); # detect OS |
212 | $conf->{ostype} = $lxc_setup->{conf}->{ostype}; | |
213 | my $raw = PVE::Tools::file_get_contents($ovz_cfg_fn); | |
214 | my $oldconf = PVE::VZDump::ConvertOVZ::convert_ovz($raw); | |
215 | foreach my $key (keys %$oldconf) { | |
216 | $conf->{$key} = $oldconf->{$key} if !defined($conf->{$key}); | |
217 | } | |
218 | unlink($ovz_cfg_fn); | |
148d1cb4 | 219 | |
51665c2d FG |
220 | } else { |
221 | print "###########################################################\n"; | |
222 | print "Backup archive does not contain any configuration\n"; | |
223 | print "###########################################################\n"; | |
148d1cb4 | 224 | } |
5b4657d0 DM |
225 | } |
226 | ||
227 | 1; |