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Commit | Line | Data |
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f76a2828 DM |
1 | package PVE::LXC; |
2 | ||
3 | use strict; | |
4 | use warnings; | |
67afe46e | 5 | |
d14a9a1b | 6 | use POSIX qw(EINTR); |
f76a2828 | 7 | |
34fdb3d7 WB |
8 | use Socket; |
9 | ||
f76a2828 | 10 | use File::Path; |
2cfae16e WB |
11 | use File::Spec; |
12 | use Cwd qw(); | |
ab3722b3 | 13 | use Fcntl qw(O_RDONLY O_NOFOLLOW O_DIRECTORY); |
b1bad293 WB |
14 | use Errno qw(ELOOP ENOTDIR EROFS ECONNREFUSED); |
15 | use IO::Socket::UNIX; | |
f76a2828 | 16 | |
f1ba1a4b | 17 | use PVE::Exception qw(raise_perm_exc); |
c65e0a6d | 18 | use PVE::Storage; |
f76a2828 DM |
19 | use PVE::SafeSyslog; |
20 | use PVE::INotify; | |
ab3722b3 | 21 | use PVE::Tools qw($IPV6RE $IPV4RE dir_glob_foreach lock_file lock_file_full O_PATH); |
92902047 | 22 | use PVE::CpuSet; |
68fba17b | 23 | use PVE::Network; |
52389a07 | 24 | use PVE::AccessControl; |
228a5a1d | 25 | use PVE::ProcFSTools; |
0389da0d | 26 | use PVE::Syscall; |
67afe46e | 27 | use PVE::LXC::Config; |
688afc63 | 28 | use Time::HiRes qw (gettimeofday); |
f76a2828 | 29 | |
27916659 DM |
30 | my $nodename = PVE::INotify::nodename(); |
31 | ||
688afc63 WL |
32 | my $cpuinfo= PVE::ProcFSTools::read_cpuinfo(); |
33 | ||
f76a2828 DM |
34 | sub config_list { |
35 | my $vmlist = PVE::Cluster::get_vmlist(); | |
36 | my $res = {}; | |
37 | return $res if !$vmlist || !$vmlist->{ids}; | |
38 | my $ids = $vmlist->{ids}; | |
39 | ||
40 | foreach my $vmid (keys %$ids) { | |
41 | next if !$vmid; # skip CT0 | |
42 | my $d = $ids->{$vmid}; | |
43 | next if !$d->{node} || $d->{node} ne $nodename; | |
44 | next if !$d->{type} || $d->{type} ne 'lxc'; | |
45 | $res->{$vmid}->{type} = 'lxc'; | |
46 | } | |
47 | return $res; | |
48 | } | |
49 | ||
5b4657d0 DM |
50 | sub destroy_config { |
51 | my ($vmid) = @_; | |
52 | ||
67afe46e | 53 | unlink PVE::LXC::Config->config_file($vmid, $nodename); |
3cc56749 FG |
54 | } |
55 | ||
822de0c3 DM |
56 | # container status helpers |
57 | ||
58 | sub list_active_containers { | |
cbb03fea | 59 | |
822de0c3 DM |
60 | my $filename = "/proc/net/unix"; |
61 | ||
62 | # similar test is used by lcxcontainers.c: list_active_containers | |
63 | my $res = {}; | |
cbb03fea | 64 | |
822de0c3 DM |
65 | my $fh = IO::File->new ($filename, "r"); |
66 | return $res if !$fh; | |
67 | ||
68 | while (defined(my $line = <$fh>)) { | |
28df2cde | 69 | if ($line =~ m/^[a-f0-9]+:\s+\S+\s+\S+\s+\S+\s+\S+\s+\S+\s+\d+\s+(\S+)$/) { |
822de0c3 | 70 | my $path = $1; |
27916659 | 71 | if ($path =~ m!^@/var/lib/lxc/(\d+)/command$!) { |
822de0c3 DM |
72 | $res->{$1} = 1; |
73 | } | |
74 | } | |
75 | } | |
76 | ||
77 | close($fh); | |
cbb03fea | 78 | |
822de0c3 DM |
79 | return $res; |
80 | } | |
f76a2828 | 81 | |
5c752bbf DM |
82 | # warning: this is slow |
83 | sub check_running { | |
84 | my ($vmid) = @_; | |
85 | ||
86 | my $active_hash = list_active_containers(); | |
87 | ||
88 | return 1 if defined($active_hash->{$vmid}); | |
cbb03fea | 89 | |
5c752bbf DM |
90 | return undef; |
91 | } | |
92 | ||
10fc3ba5 | 93 | sub get_container_disk_usage { |
73e03cb7 | 94 | my ($vmid, $pid) = @_; |
10fc3ba5 | 95 | |
73e03cb7 | 96 | return PVE::Tools::df("/proc/$pid/root/", 1); |
10fc3ba5 DM |
97 | } |
98 | ||
688afc63 WL |
99 | my $last_proc_vmid_stat; |
100 | ||
101 | my $parse_cpuacct_stat = sub { | |
3b5070d4 | 102 | my ($vmid, $unprivileged) = @_; |
688afc63 | 103 | |
3b5070d4 | 104 | my $raw = read_cgroup_value('cpuacct', $vmid, $unprivileged, 'cpuacct.stat', 1); |
688afc63 WL |
105 | |
106 | my $stat = {}; | |
107 | ||
108 | if ($raw =~ m/^user (\d+)\nsystem (\d+)\n/) { | |
109 | ||
110 | $stat->{utime} = $1; | |
111 | $stat->{stime} = $2; | |
112 | ||
113 | } | |
114 | ||
115 | return $stat; | |
116 | }; | |
117 | ||
f76a2828 DM |
118 | sub vmstatus { |
119 | my ($opt_vmid) = @_; | |
120 | ||
121 | my $list = $opt_vmid ? { $opt_vmid => { type => 'lxc' }} : config_list(); | |
122 | ||
822de0c3 | 123 | my $active_hash = list_active_containers(); |
cbb03fea | 124 | |
688afc63 WL |
125 | my $cpucount = $cpuinfo->{cpus} || 1; |
126 | ||
127 | my $cdtime = gettimeofday; | |
128 | ||
129 | my $uptime = (PVE::ProcFSTools::read_proc_uptime(1))[0]; | |
80d56111 | 130 | my $clock_ticks = POSIX::sysconf(&POSIX::_SC_CLK_TCK); |
688afc63 | 131 | |
3b5070d4 WB |
132 | my $unprivileged = {}; |
133 | ||
f76a2828 | 134 | foreach my $vmid (keys %$list) { |
f76a2828 | 135 | my $d = $list->{$vmid}; |
10fc3ba5 | 136 | |
d5588ee3 DM |
137 | eval { $d->{pid} = find_lxc_pid($vmid) if defined($active_hash->{$vmid}); }; |
138 | warn $@ if $@; # ignore errors (consider them stopped) | |
cbb03fea | 139 | |
d5588ee3 | 140 | $d->{status} = $d->{pid} ? 'running' : 'stopped'; |
f76a2828 | 141 | |
67afe46e | 142 | my $cfspath = PVE::LXC::Config->cfs_config_path($vmid); |
238a56cb | 143 | my $conf = PVE::Cluster::cfs_read_file($cfspath) || {}; |
cbb03fea | 144 | |
3b5070d4 WB |
145 | $unprivileged->{$vmid} = $conf->{unprivileged}; |
146 | ||
27916659 | 147 | $d->{name} = $conf->{'hostname'} || "CT$vmid"; |
238a56cb | 148 | $d->{name} =~ s/[\s]//g; |
cbb03fea | 149 | |
f2357408 DM |
150 | $d->{cpus} = $conf->{cores} || $conf->{cpulimit}; |
151 | $d->{cpus} = $cpucount if !$d->{cpus}; | |
44da0641 | 152 | |
d0226204 WB |
153 | $d->{lock} = $conf->{lock} || ''; |
154 | ||
d5588ee3 DM |
155 | if ($d->{pid}) { |
156 | my $res = get_container_disk_usage($vmid, $d->{pid}); | |
27916659 DM |
157 | $d->{disk} = $res->{used}; |
158 | $d->{maxdisk} = $res->{total}; | |
159 | } else { | |
160 | $d->{disk} = 0; | |
161 | # use 4GB by default ?? | |
162 | if (my $rootfs = $conf->{rootfs}) { | |
1b4cf758 | 163 | my $rootinfo = PVE::LXC::Config->parse_ct_rootfs($rootfs); |
af02245c | 164 | $d->{maxdisk} = $rootinfo->{size} || (4*1024*1024*1024); |
27916659 DM |
165 | } else { |
166 | $d->{maxdisk} = 4*1024*1024*1024; | |
10fc3ba5 | 167 | } |
238a56cb | 168 | } |
cbb03fea | 169 | |
238a56cb DM |
170 | $d->{mem} = 0; |
171 | $d->{swap} = 0; | |
95df9a12 DM |
172 | $d->{maxmem} = ($conf->{memory}||512)*1024*1024; |
173 | $d->{maxswap} = ($conf->{swap}//0)*1024*1024; | |
e901d418 | 174 | |
238a56cb DM |
175 | $d->{uptime} = 0; |
176 | $d->{cpu} = 0; | |
e901d418 | 177 | |
238a56cb DM |
178 | $d->{netout} = 0; |
179 | $d->{netin} = 0; | |
f76a2828 | 180 | |
238a56cb DM |
181 | $d->{diskread} = 0; |
182 | $d->{diskwrite} = 0; | |
bb1ac2de | 183 | |
67afe46e | 184 | $d->{template} = PVE::LXC::Config->is_template($conf); |
f76a2828 | 185 | } |
cbb03fea | 186 | |
238a56cb DM |
187 | foreach my $vmid (keys %$list) { |
188 | my $d = $list->{$vmid}; | |
d5588ee3 DM |
189 | my $pid = $d->{pid}; |
190 | ||
191 | next if !$pid; # skip stopped CTs | |
f76a2828 | 192 | |
80d56111 DC |
193 | my $proc_pid_stat = PVE::ProcFSTools::read_proc_pid_stat($pid); |
194 | $d->{uptime} = int(($uptime - $proc_pid_stat->{starttime}) / $clock_ticks); # the method lxcfs uses | |
22a77285 | 195 | |
3b5070d4 WB |
196 | my $unpriv = $unprivileged->{$vmid}; |
197 | ||
198 | my $memory_stat = read_cgroup_list('memory', $vmid, $unpriv, 'memory.stat'); | |
199 | my $mem_usage_in_bytes = read_cgroup_value('memory', $vmid, $unpriv, 'memory.usage_in_bytes'); | |
b3059d35 | 200 | |
cf8a6472 | 201 | $d->{mem} = $mem_usage_in_bytes - $memory_stat->{total_cache}; |
3b5070d4 | 202 | $d->{swap} = read_cgroup_value('memory', $vmid, $unpriv, 'memory.memsw.usage_in_bytes') - $mem_usage_in_bytes; |
b5289322 | 203 | |
3b5070d4 | 204 | my $blkio_bytes = read_cgroup_value('blkio', $vmid, $unpriv, 'blkio.throttle.io_service_bytes', 1); |
1e647c7c | 205 | my @bytes = split(/\n/, $blkio_bytes); |
b5289322 | 206 | foreach my $byte (@bytes) { |
1e647c7c | 207 | if (my ($key, $value) = $byte =~ /(Read|Write)\s+(\d+)/) { |
41ef9833 PA |
208 | $d->{diskread} += $2 if $key eq 'Read'; |
209 | $d->{diskwrite} += $2 if $key eq 'Write'; | |
1e647c7c | 210 | } |
b5289322 | 211 | } |
688afc63 | 212 | |
3b5070d4 | 213 | my $pstat = $parse_cpuacct_stat->($vmid, $unpriv); |
688afc63 WL |
214 | |
215 | my $used = $pstat->{utime} + $pstat->{stime}; | |
216 | ||
217 | my $old = $last_proc_vmid_stat->{$vmid}; | |
218 | if (!$old) { | |
219 | $last_proc_vmid_stat->{$vmid} = { | |
220 | time => $cdtime, | |
221 | used => $used, | |
222 | cpu => 0, | |
223 | }; | |
224 | next; | |
225 | } | |
226 | ||
227 | my $dtime = ($cdtime - $old->{time}) * $cpucount * $cpuinfo->{user_hz}; | |
228 | ||
229 | if ($dtime > 1000) { | |
230 | my $dutime = $used - $old->{used}; | |
231 | ||
232 | $d->{cpu} = (($dutime/$dtime)* $cpucount) / $d->{cpus}; | |
233 | $last_proc_vmid_stat->{$vmid} = { | |
234 | time => $cdtime, | |
235 | used => $used, | |
236 | cpu => $d->{cpu}, | |
237 | }; | |
238 | } else { | |
239 | $d->{cpu} = $old->{cpu}; | |
240 | } | |
238a56cb | 241 | } |
cbb03fea | 242 | |
68b8f4d1 WL |
243 | my $netdev = PVE::ProcFSTools::read_proc_net_dev(); |
244 | ||
245 | foreach my $dev (keys %$netdev) { | |
246 | next if $dev !~ m/^veth([1-9]\d*)i/; | |
247 | my $vmid = $1; | |
248 | my $d = $list->{$vmid}; | |
249 | ||
250 | next if !$d; | |
251 | ||
252 | $d->{netout} += $netdev->{$dev}->{receive}; | |
253 | $d->{netin} += $netdev->{$dev}->{transmit}; | |
254 | ||
255 | } | |
256 | ||
f76a2828 DM |
257 | return $list; |
258 | } | |
259 | ||
3b5070d4 WB |
260 | sub read_cgroup_list($$$$) { |
261 | my ($group, $vmid, $unprivileged, $name) = @_; | |
b3059d35 | 262 | |
3b5070d4 | 263 | my $content = read_cgroup_value($group, $vmid, $unprivileged, $name, 1); |
b3059d35 TL |
264 | |
265 | return { split(/\s+/, $content) }; | |
266 | } | |
267 | ||
3b5070d4 WB |
268 | sub read_cgroup_value($$$$$) { |
269 | my ($group, $vmid, $unprivileged, $name, $full) = @_; | |
238a56cb | 270 | |
3b5070d4 WB |
271 | my $nsdir = $unprivileged ? '' : 'ns/'; |
272 | my $path = "/sys/fs/cgroup/$group/lxc/$vmid/${nsdir}$name"; | |
238a56cb DM |
273 | |
274 | return PVE::Tools::file_get_contents($path) if $full; | |
275 | ||
276 | return PVE::Tools::file_read_firstline($path); | |
277 | } | |
278 | ||
bf0b8c43 AD |
279 | sub write_cgroup_value { |
280 | my ($group, $vmid, $name, $value) = @_; | |
281 | ||
282 | my $path = "/sys/fs/cgroup/$group/lxc/$vmid/$name"; | |
283 | PVE::ProcFSTools::write_proc_entry($path, $value) if -e $path; | |
284 | ||
285 | } | |
286 | ||
52f1d76b DM |
287 | sub find_lxc_console_pids { |
288 | ||
289 | my $res = {}; | |
290 | ||
291 | PVE::Tools::dir_glob_foreach('/proc', '\d+', sub { | |
292 | my ($pid) = @_; | |
293 | ||
294 | my $cmdline = PVE::Tools::file_read_firstline("/proc/$pid/cmdline"); | |
295 | return if !$cmdline; | |
296 | ||
297 | my @args = split(/\0/, $cmdline); | |
298 | ||
c31ad455 | 299 | # search for lxc-console -n <vmid> |
cbb03fea | 300 | return if scalar(@args) != 3; |
52f1d76b DM |
301 | return if $args[1] ne '-n'; |
302 | return if $args[2] !~ m/^\d+$/; | |
303 | return if $args[0] !~ m|^(/usr/bin/)?lxc-console$|; | |
cbb03fea | 304 | |
52f1d76b | 305 | my $vmid = $args[2]; |
cbb03fea | 306 | |
52f1d76b DM |
307 | push @{$res->{$vmid}}, $pid; |
308 | }); | |
309 | ||
310 | return $res; | |
311 | } | |
312 | ||
bedeaaf1 AD |
313 | sub find_lxc_pid { |
314 | my ($vmid) = @_; | |
315 | ||
316 | my $pid = undef; | |
317 | my $parser = sub { | |
318 | my $line = shift; | |
8b25977f | 319 | $pid = $1 if $line =~ m/^PID:\s+(\d+)$/; |
bedeaaf1 | 320 | }; |
c39aa40a | 321 | PVE::Tools::run_command(['lxc-info', '-n', $vmid, '-p'], outfunc => $parser); |
bedeaaf1 | 322 | |
8b25977f | 323 | die "unable to get PID for CT $vmid (not running?)\n" if !$pid; |
cbb03fea | 324 | |
8b25977f | 325 | return $pid; |
bedeaaf1 AD |
326 | } |
327 | ||
cbb03fea | 328 | # Note: we cannot use Net:IP, because that only allows strict |
55fa4e09 DM |
329 | # CIDR networks |
330 | sub parse_ipv4_cidr { | |
331 | my ($cidr, $noerr) = @_; | |
332 | ||
f7a7b413 WB |
333 | if ($cidr =~ m!^($IPV4RE)(?:/(\d+))$! && ($2 > 7) && ($2 <= 32)) { |
334 | return { address => $1, netmask => $PVE::Network::ipv4_reverse_mask->[$2] }; | |
55fa4e09 | 335 | } |
cbb03fea | 336 | |
55fa4e09 | 337 | return undef if $noerr; |
cbb03fea | 338 | |
55fa4e09 DM |
339 | die "unable to parse ipv4 address/mask\n"; |
340 | } | |
93285df8 | 341 | |
e22af68f | 342 | |
27916659 | 343 | sub update_lxc_config { |
f91f3669 | 344 | my ($vmid, $conf) = @_; |
b80dd50a | 345 | |
bb1ac2de DM |
346 | my $dir = "/var/lib/lxc/$vmid"; |
347 | ||
348 | if ($conf->{template}) { | |
349 | ||
350 | unlink "$dir/config"; | |
351 | ||
352 | return; | |
353 | } | |
354 | ||
27916659 | 355 | my $raw = ''; |
b80dd50a | 356 | |
27916659 DM |
357 | die "missing 'arch' - internal error" if !$conf->{arch}; |
358 | $raw .= "lxc.arch = $conf->{arch}\n"; | |
b80dd50a | 359 | |
425b62cb | 360 | my $unprivileged = $conf->{unprivileged}; |
108c6cab | 361 | my $custom_idmap = grep { $_->[0] eq 'lxc.idmap' } @{$conf->{lxc}}; |
425b62cb | 362 | |
27916659 | 363 | my $ostype = $conf->{ostype} || die "missing 'ostype' - internal error"; |
866e0611 TL |
364 | |
365 | my $inc ="/usr/share/lxc/config/$ostype.common.conf"; | |
366 | $inc ="/usr/share/lxc/config/common.conf" if !-f $inc; | |
367 | $raw .= "lxc.include = $inc\n"; | |
368 | if ($unprivileged || $custom_idmap) { | |
369 | $inc = "/usr/share/lxc/config/$ostype.userns.conf"; | |
370 | $inc = "/usr/share/lxc/config/userns.conf" if !-f $inc; | |
371 | $raw .= "lxc.include = $inc\n" | |
27916659 | 372 | } |
b80dd50a | 373 | |
50df544c WB |
374 | # WARNING: DO NOT REMOVE this without making sure that loop device nodes |
375 | # cannot be exposed to the container with r/w access (cgroup perms). | |
376 | # When this is enabled mounts will still remain in the monitor's namespace | |
377 | # after the container unmounted them and thus will not detach from their | |
378 | # files while the container is running! | |
c16b8890 | 379 | $raw .= "lxc.monitor.unshare = 1\n"; |
58cc92a9 | 380 | |
425b62cb WB |
381 | # Should we read them from /etc/subuid? |
382 | if ($unprivileged && !$custom_idmap) { | |
108c6cab WB |
383 | $raw .= "lxc.idmap = u 0 100000 65536\n"; |
384 | $raw .= "lxc.idmap = g 0 100000 65536\n"; | |
425b62cb WB |
385 | } |
386 | ||
d250604f | 387 | if (!PVE::LXC::Config->has_dev_console($conf)) { |
108c6cab | 388 | $raw .= "lxc.console.path = none\n"; |
eeaea429 DM |
389 | $raw .= "lxc.cgroup.devices.deny = c 5:1 rwm\n"; |
390 | } | |
4f958489 | 391 | |
1b4cf758 | 392 | my $ttycount = PVE::LXC::Config->get_tty_count($conf); |
108c6cab | 393 | $raw .= "lxc.tty.max = $ttycount\n"; |
cbb03fea | 394 | |
c31ad455 | 395 | # some init scripts expect a linux terminal (turnkey). |
a691a5a3 DM |
396 | $raw .= "lxc.environment = TERM=linux\n"; |
397 | ||
27916659 | 398 | my $utsname = $conf->{hostname} || "CT$vmid"; |
108c6cab | 399 | $raw .= "lxc.uts.name = $utsname\n"; |
cbb03fea | 400 | |
27916659 DM |
401 | my $memory = $conf->{memory} || 512; |
402 | my $swap = $conf->{swap} // 0; | |
403 | ||
404 | my $lxcmem = int($memory*1024*1024); | |
405 | $raw .= "lxc.cgroup.memory.limit_in_bytes = $lxcmem\n"; | |
a12a36e0 | 406 | |
27916659 DM |
407 | my $lxcswap = int(($memory + $swap)*1024*1024); |
408 | $raw .= "lxc.cgroup.memory.memsw.limit_in_bytes = $lxcswap\n"; | |
409 | ||
410 | if (my $cpulimit = $conf->{cpulimit}) { | |
411 | $raw .= "lxc.cgroup.cpu.cfs_period_us = 100000\n"; | |
412 | my $value = int(100000*$cpulimit); | |
413 | $raw .= "lxc.cgroup.cpu.cfs_quota_us = $value\n"; | |
a12a36e0 WL |
414 | } |
415 | ||
27916659 DM |
416 | my $shares = $conf->{cpuunits} || 1024; |
417 | $raw .= "lxc.cgroup.cpu.shares = $shares\n"; | |
418 | ||
fddaa91b DM |
419 | die "missing 'rootfs' configuration\n" |
420 | if !defined($conf->{rootfs}); | |
421 | ||
1b4cf758 | 422 | my $mountpoint = PVE::LXC::Config->parse_ct_rootfs($conf->{rootfs}); |
a3076d81 | 423 | |
108c6cab | 424 | $raw .= "lxc.rootfs.path = $dir/rootfs\n"; |
27916659 | 425 | |
e756bdd6 | 426 | foreach my $k (sort keys %$conf) { |
27916659 DM |
427 | next if $k !~ m/^net(\d+)$/; |
428 | my $ind = $1; | |
1b4cf758 | 429 | my $d = PVE::LXC::Config->parse_lxc_network($conf->{$k}); |
108c6cab WB |
430 | $raw .= "lxc.net.$ind.type = veth\n"; |
431 | $raw .= "lxc.net.$ind.veth.pair = veth${vmid}i${ind}\n"; | |
432 | $raw .= "lxc.net.$ind.hwaddr = $d->{hwaddr}\n" if defined($d->{hwaddr}); | |
433 | $raw .= "lxc.net.$ind.name = $d->{name}\n" if defined($d->{name}); | |
434 | $raw .= "lxc.net.$ind.mtu = $d->{mtu}\n" if defined($d->{mtu}); | |
a12a36e0 WL |
435 | } |
436 | ||
92902047 | 437 | my $had_cpuset = 0; |
e576f689 DM |
438 | if (my $lxcconf = $conf->{lxc}) { |
439 | foreach my $entry (@$lxcconf) { | |
440 | my ($k, $v) = @$entry; | |
92902047 | 441 | $had_cpuset = 1 if $k eq 'lxc.cgroup.cpuset.cpus'; |
e576f689 DM |
442 | $raw .= "$k = $v\n"; |
443 | } | |
444 | } | |
27916659 | 445 | |
92902047 WB |
446 | my $cores = $conf->{cores}; |
447 | if (!$had_cpuset && $cores) { | |
6560ce0f WB |
448 | my $cpuset = eval { PVE::CpuSet->new_from_cgroup('lxc', 'effective_cpus') }; |
449 | $cpuset = PVE::CpuSet->new_from_cgroup('', 'effective_cpus') if !$cpuset; | |
92902047 WB |
450 | my @members = $cpuset->members(); |
451 | while (scalar(@members) > $cores) { | |
452 | my $randidx = int(rand(scalar(@members))); | |
453 | $cpuset->delete($members[$randidx]); | |
454 | splice(@members, $randidx, 1); # keep track of the changes | |
455 | } | |
456 | $raw .= "lxc.cgroup.cpuset.cpus = ".$cpuset->short_string()."\n"; | |
457 | } | |
e576f689 | 458 | |
27916659 DM |
459 | File::Path::mkpath("$dir/rootfs"); |
460 | ||
461 | PVE::Tools::file_set_contents("$dir/config", $raw); | |
b80dd50a DM |
462 | } |
463 | ||
117636e5 DM |
464 | # verify and cleanup nameserver list (replace \0 with ' ') |
465 | sub verify_nameserver_list { | |
466 | my ($nameserver_list) = @_; | |
467 | ||
468 | my @list = (); | |
469 | foreach my $server (PVE::Tools::split_list($nameserver_list)) { | |
470 | PVE::JSONSchema::pve_verify_ip($server); | |
471 | push @list, $server; | |
472 | } | |
473 | ||
474 | return join(' ', @list); | |
475 | } | |
476 | ||
477 | sub verify_searchdomain_list { | |
478 | my ($searchdomain_list) = @_; | |
479 | ||
480 | my @list = (); | |
481 | foreach my $server (PVE::Tools::split_list($searchdomain_list)) { | |
482 | # todo: should we add checks for valid dns domains? | |
483 | push @list, $server; | |
484 | } | |
485 | ||
486 | return join(' ', @list); | |
487 | } | |
488 | ||
aca816ad | 489 | sub get_console_command { |
4d494664 | 490 | my ($vmid, $conf, $noescapechar) = @_; |
aca816ad | 491 | |
1b4cf758 | 492 | my $cmode = PVE::LXC::Config->get_cmode($conf); |
aca816ad | 493 | |
4d494664 | 494 | my $cmd = []; |
aca816ad | 495 | if ($cmode eq 'console') { |
4d494664 DC |
496 | push @$cmd, 'lxc-console', '-n', $vmid, '-t', 0; |
497 | push @$cmd, '-e', -1 if $noescapechar; | |
aca816ad | 498 | } elsif ($cmode eq 'tty') { |
4d494664 DC |
499 | push @$cmd, 'lxc-console', '-n', $vmid; |
500 | push @$cmd, '-e', -1 if $noescapechar; | |
aca816ad | 501 | } elsif ($cmode eq 'shell') { |
4d494664 | 502 | push @$cmd, 'lxc-attach', '--clear-env', '-n', $vmid; |
aca816ad DM |
503 | } else { |
504 | die "internal error"; | |
505 | } | |
4d494664 DC |
506 | |
507 | return $cmd; | |
aca816ad DM |
508 | } |
509 | ||
c325b32f DM |
510 | sub get_primary_ips { |
511 | my ($conf) = @_; | |
512 | ||
513 | # return data from net0 | |
cbb03fea | 514 | |
27916659 | 515 | return undef if !defined($conf->{net0}); |
1b4cf758 | 516 | my $net = PVE::LXC::Config->parse_lxc_network($conf->{net0}); |
c325b32f DM |
517 | |
518 | my $ipv4 = $net->{ip}; | |
db78a181 WB |
519 | if ($ipv4) { |
520 | if ($ipv4 =~ /^(dhcp|manual)$/) { | |
521 | $ipv4 = undef | |
522 | } else { | |
523 | $ipv4 =~ s!/\d+$!!; | |
524 | } | |
525 | } | |
65e5eaa3 | 526 | my $ipv6 = $net->{ip6}; |
db78a181 | 527 | if ($ipv6) { |
5f291c7d | 528 | if ($ipv6 =~ /^(auto|dhcp|manual)$/) { |
db78a181 WB |
529 | $ipv6 = undef; |
530 | } else { | |
531 | $ipv6 =~ s!/\d+$!!; | |
532 | } | |
533 | } | |
cbb03fea | 534 | |
c325b32f DM |
535 | return ($ipv4, $ipv6); |
536 | } | |
148d1cb4 | 537 | |
b407293b WB |
538 | sub delete_mountpoint_volume { |
539 | my ($storage_cfg, $vmid, $volume) = @_; | |
540 | ||
d250604f | 541 | return if PVE::LXC::Config->classify_mountpoint($volume) ne 'volume'; |
b407293b WB |
542 | |
543 | my ($vtype, $name, $owner) = PVE::Storage::parse_volname($storage_cfg, $volume); | |
544 | PVE::Storage::vdisk_free($storage_cfg, $volume) if $vmid == $owner; | |
545 | } | |
ef241384 | 546 | |
27916659 | 547 | sub destroy_lxc_container { |
bccaa371 | 548 | my ($storage_cfg, $vmid, $conf, $replacement_conf) = @_; |
148d1cb4 | 549 | |
d250604f | 550 | PVE::LXC::Config->foreach_mountpoint($conf, sub { |
db8989e1 | 551 | my ($ms, $mountpoint) = @_; |
b407293b | 552 | delete_mountpoint_volume($storage_cfg, $vmid, $mountpoint->{volume}); |
db8989e1 WB |
553 | }); |
554 | ||
27916659 DM |
555 | rmdir "/var/lib/lxc/$vmid/rootfs"; |
556 | unlink "/var/lib/lxc/$vmid/config"; | |
557 | rmdir "/var/lib/lxc/$vmid"; | |
bccaa371 FG |
558 | if (defined $replacement_conf) { |
559 | PVE::LXC::Config->write_config($vmid, $replacement_conf); | |
560 | } else { | |
561 | destroy_config($vmid); | |
562 | } | |
27916659 DM |
563 | |
564 | #my $cmd = ['lxc-destroy', '-n', $vmid ]; | |
565 | #PVE::Tools::run_command($cmd); | |
148d1cb4 | 566 | } |
68fba17b | 567 | |
ef241384 | 568 | sub vm_stop_cleanup { |
5fa890f0 | 569 | my ($storage_cfg, $vmid, $conf, $keepActive) = @_; |
ef241384 DM |
570 | |
571 | eval { | |
572 | if (!$keepActive) { | |
bf9d912c | 573 | |
d250604f | 574 | my $vollist = PVE::LXC::Config->get_vm_volumes($conf); |
a8b6b8a7 | 575 | PVE::Storage::deactivate_volumes($storage_cfg, $vollist); |
ef241384 DM |
576 | } |
577 | }; | |
578 | warn $@ if $@; # avoid errors - just warn | |
579 | } | |
580 | ||
93cdbbfb AD |
581 | my $safe_num_ne = sub { |
582 | my ($a, $b) = @_; | |
583 | ||
584 | return 0 if !defined($a) && !defined($b); | |
585 | return 1 if !defined($a); | |
586 | return 1 if !defined($b); | |
587 | ||
588 | return $a != $b; | |
589 | }; | |
590 | ||
591 | my $safe_string_ne = sub { | |
592 | my ($a, $b) = @_; | |
593 | ||
594 | return 0 if !defined($a) && !defined($b); | |
595 | return 1 if !defined($a); | |
596 | return 1 if !defined($b); | |
597 | ||
598 | return $a ne $b; | |
599 | }; | |
600 | ||
601 | sub update_net { | |
bedeaaf1 | 602 | my ($vmid, $conf, $opt, $newnet, $netid, $rootdir) = @_; |
93cdbbfb | 603 | |
18862537 WB |
604 | if ($newnet->{type} ne 'veth') { |
605 | # for when there are physical interfaces | |
606 | die "cannot update interface of type $newnet->{type}"; | |
607 | } | |
608 | ||
609 | my $veth = "veth${vmid}i${netid}"; | |
93cdbbfb AD |
610 | my $eth = $newnet->{name}; |
611 | ||
18862537 | 612 | if (my $oldnetcfg = $conf->{$opt}) { |
1b4cf758 | 613 | my $oldnet = PVE::LXC::Config->parse_lxc_network($oldnetcfg); |
18862537 WB |
614 | |
615 | if (&$safe_string_ne($oldnet->{hwaddr}, $newnet->{hwaddr}) || | |
616 | &$safe_string_ne($oldnet->{name}, $newnet->{name})) { | |
93cdbbfb | 617 | |
18862537 | 618 | PVE::Network::veth_delete($veth); |
bedeaaf1 | 619 | delete $conf->{$opt}; |
67afe46e | 620 | PVE::LXC::Config->write_config($vmid, $conf); |
93cdbbfb | 621 | |
18862537 | 622 | hotplug_net($vmid, $conf, $opt, $newnet, $netid); |
bedeaaf1 | 623 | |
380962c7 WB |
624 | } else { |
625 | if (&$safe_string_ne($oldnet->{bridge}, $newnet->{bridge}) || | |
626 | &$safe_num_ne($oldnet->{tag}, $newnet->{tag}) || | |
627 | &$safe_num_ne($oldnet->{firewall}, $newnet->{firewall})) { | |
bedeaaf1 | 628 | |
18862537 | 629 | if ($oldnet->{bridge}) { |
bedeaaf1 | 630 | PVE::Network::tap_unplug($veth); |
18862537 WB |
631 | foreach (qw(bridge tag firewall)) { |
632 | delete $oldnet->{$_}; | |
633 | } | |
1b4cf758 | 634 | $conf->{$opt} = PVE::LXC::Config->print_lxc_network($oldnet); |
67afe46e | 635 | PVE::LXC::Config->write_config($vmid, $conf); |
bedeaaf1 | 636 | } |
93cdbbfb | 637 | |
380962c7 WB |
638 | PVE::Network::tap_plug($veth, $newnet->{bridge}, $newnet->{tag}, $newnet->{firewall}, $newnet->{trunks}, $newnet->{rate}); |
639 | # This includes the rate: | |
640 | foreach (qw(bridge tag firewall rate)) { | |
18862537 WB |
641 | $oldnet->{$_} = $newnet->{$_} if $newnet->{$_}; |
642 | } | |
380962c7 WB |
643 | } elsif (&$safe_string_ne($oldnet->{rate}, $newnet->{rate})) { |
644 | # Rate can be applied on its own but any change above needs to | |
645 | # include the rate in tap_plug since OVS resets everything. | |
646 | PVE::Network::tap_rate_limit($veth, $newnet->{rate}); | |
647 | $oldnet->{rate} = $newnet->{rate} | |
648 | } | |
649 | $conf->{$opt} = PVE::LXC::Config->print_lxc_network($oldnet); | |
650 | PVE::LXC::Config->write_config($vmid, $conf); | |
93cdbbfb AD |
651 | } |
652 | } else { | |
18862537 | 653 | hotplug_net($vmid, $conf, $opt, $newnet, $netid); |
93cdbbfb AD |
654 | } |
655 | ||
bedeaaf1 | 656 | update_ipconfig($vmid, $conf, $opt, $eth, $newnet, $rootdir); |
93cdbbfb AD |
657 | } |
658 | ||
659 | sub hotplug_net { | |
18862537 | 660 | my ($vmid, $conf, $opt, $newnet, $netid) = @_; |
93cdbbfb | 661 | |
18862537 | 662 | my $veth = "veth${vmid}i${netid}"; |
cbb03fea | 663 | my $vethpeer = $veth . "p"; |
93cdbbfb AD |
664 | my $eth = $newnet->{name}; |
665 | ||
666 | PVE::Network::veth_create($veth, $vethpeer, $newnet->{bridge}, $newnet->{hwaddr}); | |
380962c7 | 667 | PVE::Network::tap_plug($veth, $newnet->{bridge}, $newnet->{tag}, $newnet->{firewall}, $newnet->{trunks}, $newnet->{rate}); |
93cdbbfb | 668 | |
cbb03fea | 669 | # attach peer in container |
93cdbbfb AD |
670 | my $cmd = ['lxc-device', '-n', $vmid, 'add', $vethpeer, "$eth" ]; |
671 | PVE::Tools::run_command($cmd); | |
672 | ||
cbb03fea | 673 | # link up peer in container |
93cdbbfb AD |
674 | $cmd = ['lxc-attach', '-n', $vmid, '-s', 'NETWORK', '--', '/sbin/ip', 'link', 'set', $eth ,'up' ]; |
675 | PVE::Tools::run_command($cmd); | |
bedeaaf1 | 676 | |
18862537 WB |
677 | my $done = { type => 'veth' }; |
678 | foreach (qw(bridge tag firewall hwaddr name)) { | |
679 | $done->{$_} = $newnet->{$_} if $newnet->{$_}; | |
680 | } | |
1b4cf758 | 681 | $conf->{$opt} = PVE::LXC::Config->print_lxc_network($done); |
bedeaaf1 | 682 | |
67afe46e | 683 | PVE::LXC::Config->write_config($vmid, $conf); |
93cdbbfb AD |
684 | } |
685 | ||
68a05bb3 | 686 | sub update_ipconfig { |
bedeaaf1 AD |
687 | my ($vmid, $conf, $opt, $eth, $newnet, $rootdir) = @_; |
688 | ||
f2104b80 | 689 | my $lxc_setup = PVE::LXC::Setup->new($conf, $rootdir); |
bedeaaf1 | 690 | |
1b4cf758 | 691 | my $optdata = PVE::LXC::Config->parse_lxc_network($conf->{$opt}); |
84e0c123 WB |
692 | my $deleted = []; |
693 | my $added = []; | |
8d723477 WB |
694 | my $nscmd = sub { |
695 | my $cmdargs = shift; | |
696 | PVE::Tools::run_command(['lxc-attach', '-n', $vmid, '-s', 'NETWORK', '--', @_], %$cmdargs); | |
84e0c123 | 697 | }; |
8d723477 | 698 | my $ipcmd = sub { &$nscmd({}, '/sbin/ip', @_) }; |
2bfd1615 | 699 | |
84e0c123 | 700 | my $change_ip_config = sub { |
f39002a6 DM |
701 | my ($ipversion) = @_; |
702 | ||
703 | my $family_opt = "-$ipversion"; | |
704 | my $suffix = $ipversion == 4 ? '' : $ipversion; | |
84e0c123 WB |
705 | my $gw= "gw$suffix"; |
706 | my $ip= "ip$suffix"; | |
bedeaaf1 | 707 | |
6178b0dd WB |
708 | my $newip = $newnet->{$ip}; |
709 | my $newgw = $newnet->{$gw}; | |
710 | my $oldip = $optdata->{$ip}; | |
711 | ||
712 | my $change_ip = &$safe_string_ne($oldip, $newip); | |
713 | my $change_gw = &$safe_string_ne($optdata->{$gw}, $newgw); | |
bedeaaf1 | 714 | |
84e0c123 | 715 | return if !$change_ip && !$change_gw; |
68a05bb3 | 716 | |
84e0c123 | 717 | # step 1: add new IP, if this fails we cancel |
292aff54 WB |
718 | my $is_real_ip = ($newip && $newip !~ /^(?:auto|dhcp|manual)$/); |
719 | if ($change_ip && $is_real_ip) { | |
8d723477 | 720 | eval { &$ipcmd($family_opt, 'addr', 'add', $newip, 'dev', $eth); }; |
84e0c123 WB |
721 | if (my $err = $@) { |
722 | warn $err; | |
723 | return; | |
724 | } | |
bedeaaf1 | 725 | } |
bedeaaf1 | 726 | |
84e0c123 WB |
727 | # step 2: replace gateway |
728 | # If this fails we delete the added IP and cancel. | |
729 | # If it succeeds we save the config and delete the old IP, ignoring | |
730 | # errors. The config is then saved. | |
731 | # Note: 'ip route replace' can add | |
732 | if ($change_gw) { | |
6178b0dd | 733 | if ($newgw) { |
292aff54 WB |
734 | eval { |
735 | if ($is_real_ip && !PVE::Network::is_ip_in_cidr($newgw, $newip, $ipversion)) { | |
736 | &$ipcmd($family_opt, 'route', 'add', $newgw, 'dev', $eth); | |
737 | } | |
738 | &$ipcmd($family_opt, 'route', 'replace', 'default', 'via', $newgw); | |
739 | }; | |
84e0c123 WB |
740 | if (my $err = $@) { |
741 | warn $err; | |
742 | # the route was not replaced, the old IP is still available | |
743 | # rollback (delete new IP) and cancel | |
744 | if ($change_ip) { | |
8d723477 | 745 | eval { &$ipcmd($family_opt, 'addr', 'del', $newip, 'dev', $eth); }; |
84e0c123 WB |
746 | warn $@ if $@; # no need to die here |
747 | } | |
748 | return; | |
749 | } | |
750 | } else { | |
8d723477 | 751 | eval { &$ipcmd($family_opt, 'route', 'del', 'default'); }; |
84e0c123 WB |
752 | # if the route was not deleted, the guest might have deleted it manually |
753 | # warn and continue | |
754 | warn $@ if $@; | |
755 | } | |
2bfd1615 | 756 | } |
2bfd1615 | 757 | |
6178b0dd | 758 | # from this point on we save the configuration |
84e0c123 | 759 | # step 3: delete old IP ignoring errors |
6178b0dd | 760 | if ($change_ip && $oldip && $oldip !~ /^(?:auto|dhcp)$/) { |
8d723477 WB |
761 | # We need to enable promote_secondaries, otherwise our newly added |
762 | # address will be removed along with the old one. | |
763 | my $promote = 0; | |
764 | eval { | |
765 | if ($ipversion == 4) { | |
766 | &$nscmd({ outfunc => sub { $promote = int(shift) } }, | |
767 | 'cat', "/proc/sys/net/ipv4/conf/$eth/promote_secondaries"); | |
768 | &$nscmd({}, 'sysctl', "net.ipv4.conf.$eth.promote_secondaries=1"); | |
769 | } | |
770 | &$ipcmd($family_opt, 'addr', 'del', $oldip, 'dev', $eth); | |
771 | }; | |
84e0c123 | 772 | warn $@ if $@; # no need to die here |
8d723477 WB |
773 | |
774 | if ($ipversion == 4) { | |
775 | &$nscmd({}, 'sysctl', "net.ipv4.conf.$eth.promote_secondaries=$promote"); | |
776 | } | |
bedeaaf1 AD |
777 | } |
778 | ||
84e0c123 WB |
779 | foreach my $property ($ip, $gw) { |
780 | if ($newnet->{$property}) { | |
781 | $optdata->{$property} = $newnet->{$property}; | |
782 | } else { | |
783 | delete $optdata->{$property}; | |
784 | } | |
bedeaaf1 | 785 | } |
1b4cf758 | 786 | $conf->{$opt} = PVE::LXC::Config->print_lxc_network($optdata); |
67afe46e | 787 | PVE::LXC::Config->write_config($vmid, $conf); |
84e0c123 WB |
788 | $lxc_setup->setup_network($conf); |
789 | }; | |
bedeaaf1 | 790 | |
f39002a6 DM |
791 | &$change_ip_config(4); |
792 | &$change_ip_config(6); | |
489e960d WL |
793 | |
794 | } | |
795 | ||
34fdb3d7 WB |
796 | my $enter_namespace = sub { |
797 | my ($vmid, $pid, $which, $type) = @_; | |
798 | sysopen my $fd, "/proc/$pid/ns/$which", O_RDONLY | |
799 | or die "failed to open $which namespace of container $vmid: $!\n"; | |
800 | PVE::Tools::setns(fileno($fd), $type) | |
801 | or die "failed to enter $which namespace of container $vmid: $!\n"; | |
802 | close $fd; | |
803 | }; | |
804 | ||
805 | my $do_syncfs = sub { | |
806 | my ($vmid, $pid, $socket) = @_; | |
807 | ||
808 | &$enter_namespace($vmid, $pid, 'mnt', PVE::Tools::CLONE_NEWNS); | |
809 | ||
810 | # Tell the parent process to start reading our /proc/mounts | |
811 | print {$socket} "go\n"; | |
812 | $socket->flush(); | |
813 | ||
814 | # Receive /proc/self/mounts | |
815 | my $mountdata = do { local $/ = undef; <$socket> }; | |
816 | close $socket; | |
817 | ||
818 | # Now sync all mountpoints... | |
819 | my $mounts = PVE::ProcFSTools::parse_mounts($mountdata); | |
820 | foreach my $mp (@$mounts) { | |
821 | my ($what, $dir, $fs) = @$mp; | |
822 | next if $fs eq 'fuse.lxcfs'; | |
823 | eval { PVE::Tools::sync_mountpoint($dir); }; | |
824 | warn $@ if $@; | |
825 | } | |
826 | }; | |
827 | ||
828 | sub sync_container_namespace { | |
829 | my ($vmid) = @_; | |
830 | my $pid = find_lxc_pid($vmid); | |
831 | ||
832 | # SOCK_DGRAM is nicer for barriers but cannot be slurped | |
833 | socketpair my $pfd, my $cfd, AF_UNIX, SOCK_STREAM, PF_UNSPEC | |
834 | or die "failed to create socketpair: $!\n"; | |
835 | ||
836 | my $child = fork(); | |
837 | die "fork failed: $!\n" if !defined($child); | |
838 | ||
839 | if (!$child) { | |
840 | eval { | |
841 | close $pfd; | |
842 | &$do_syncfs($vmid, $pid, $cfd); | |
843 | }; | |
844 | if (my $err = $@) { | |
845 | warn $err; | |
846 | POSIX::_exit(1); | |
847 | } | |
848 | POSIX::_exit(0); | |
849 | } | |
850 | close $cfd; | |
851 | my $go = <$pfd>; | |
852 | die "failed to enter container namespace\n" if $go ne "go\n"; | |
853 | ||
854 | open my $mounts, '<', "/proc/$child/mounts" | |
855 | or die "failed to open container's /proc/mounts: $!\n"; | |
856 | my $mountdata = do { local $/ = undef; <$mounts> }; | |
857 | close $mounts; | |
858 | print {$pfd} $mountdata; | |
859 | close $pfd; | |
860 | ||
861 | while (waitpid($child, 0) != $child) {} | |
862 | die "failed to sync container namespace\n" if $? != 0; | |
863 | } | |
864 | ||
bb1ac2de DM |
865 | sub template_create { |
866 | my ($vmid, $conf) = @_; | |
867 | ||
868 | my $storecfg = PVE::Storage::config(); | |
869 | ||
1b4cf758 | 870 | my $rootinfo = PVE::LXC::Config->parse_ct_rootfs($conf->{rootfs}); |
bb1ac2de DM |
871 | my $volid = $rootinfo->{volume}; |
872 | ||
873 | die "Template feature is not available for '$volid'\n" | |
874 | if !PVE::Storage::volume_has_feature($storecfg, 'template', $volid); | |
875 | ||
876 | PVE::Storage::activate_volumes($storecfg, [$volid]); | |
877 | ||
878 | my $template_volid = PVE::Storage::vdisk_create_base($storecfg, $volid); | |
879 | $rootinfo->{volume} = $template_volid; | |
1b4cf758 | 880 | $conf->{rootfs} = PVE::LXC::Config->print_ct_mountpoint($rootinfo, 1); |
bb1ac2de | 881 | |
67afe46e | 882 | PVE::LXC::Config->write_config($vmid, $conf); |
bb1ac2de DM |
883 | } |
884 | ||
52389a07 | 885 | sub check_ct_modify_config_perm { |
f1ba1a4b | 886 | my ($rpcenv, $authuser, $vmid, $pool, $newconf, $delete) = @_; |
52389a07 | 887 | |
c81f19d1 | 888 | return 1 if $authuser eq 'root@pam'; |
52389a07 | 889 | |
f1ba1a4b WB |
890 | my $check = sub { |
891 | my ($opt, $delete) = @_; | |
f2357408 | 892 | if ($opt eq 'cores' || $opt eq 'cpuunits' || $opt eq 'cpulimit') { |
52389a07 | 893 | $rpcenv->check_vm_perm($authuser, $vmid, $pool, ['VM.Config.CPU']); |
e59a61ed | 894 | } elsif ($opt eq 'rootfs' || $opt =~ /^mp\d+$/) { |
52389a07 | 895 | $rpcenv->check_vm_perm($authuser, $vmid, $pool, ['VM.Config.Disk']); |
f1ba1a4b | 896 | return if $delete; |
1b4cf758 FG |
897 | my $data = $opt eq 'rootfs' ? PVE::LXC::Config->parse_ct_rootfs($newconf->{$opt}) |
898 | : PVE::LXC::Config->parse_ct_mountpoint($newconf->{$opt}); | |
9d294016 FG |
899 | raise_perm_exc("mount point type $data->{type} is only allowed for root\@pam") |
900 | if $data->{type} ne 'volume'; | |
52389a07 DM |
901 | } elsif ($opt eq 'memory' || $opt eq 'swap') { |
902 | $rpcenv->check_vm_perm($authuser, $vmid, $pool, ['VM.Config.Memory']); | |
903 | } elsif ($opt =~ m/^net\d+$/ || $opt eq 'nameserver' || | |
904 | $opt eq 'searchdomain' || $opt eq 'hostname') { | |
905 | $rpcenv->check_vm_perm($authuser, $vmid, $pool, ['VM.Config.Network']); | |
906 | } else { | |
907 | $rpcenv->check_vm_perm($authuser, $vmid, $pool, ['VM.Config.Options']); | |
908 | } | |
f1ba1a4b WB |
909 | }; |
910 | ||
911 | foreach my $opt (keys %$newconf) { | |
912 | &$check($opt, 0); | |
913 | } | |
914 | foreach my $opt (@$delete) { | |
915 | &$check($opt, 1); | |
52389a07 DM |
916 | } |
917 | ||
918 | return 1; | |
919 | } | |
920 | ||
9622e848 | 921 | sub umount_all { |
da629848 | 922 | my ($vmid, $storage_cfg, $conf, $noerr) = @_; |
9622e848 DM |
923 | |
924 | my $rootdir = "/var/lib/lxc/$vmid/rootfs"; | |
d250604f | 925 | my $volid_list = PVE::LXC::Config->get_vm_volumes($conf); |
9622e848 | 926 | |
d250604f | 927 | PVE::LXC::Config->foreach_mountpoint_reverse($conf, sub { |
9622e848 DM |
928 | my ($ms, $mountpoint) = @_; |
929 | ||
930 | my $volid = $mountpoint->{volume}; | |
931 | my $mount = $mountpoint->{mp}; | |
932 | ||
933 | return if !$volid || !$mount; | |
934 | ||
d18f96b4 | 935 | my $mount_path = "$rootdir/$mount"; |
f845a93d | 936 | $mount_path =~ s!/+!/!g; |
9622e848 | 937 | |
228a5a1d WL |
938 | return if !PVE::ProcFSTools::is_mounted($mount_path); |
939 | ||
9622e848 | 940 | eval { |
d18f96b4 | 941 | PVE::Tools::run_command(['umount', '-d', $mount_path]); |
9622e848 DM |
942 | }; |
943 | if (my $err = $@) { | |
944 | if ($noerr) { | |
945 | warn $err; | |
946 | } else { | |
947 | die $err; | |
948 | } | |
949 | } | |
950 | }); | |
9622e848 DM |
951 | } |
952 | ||
953 | sub mount_all { | |
25321b68 | 954 | my ($vmid, $storage_cfg, $conf, $ignore_ro) = @_; |
9622e848 DM |
955 | |
956 | my $rootdir = "/var/lib/lxc/$vmid/rootfs"; | |
1adc7e53 | 957 | File::Path::make_path($rootdir); |
9622e848 | 958 | |
d250604f | 959 | my $volid_list = PVE::LXC::Config->get_vm_volumes($conf); |
9622e848 DM |
960 | PVE::Storage::activate_volumes($storage_cfg, $volid_list); |
961 | ||
962 | eval { | |
d250604f | 963 | PVE::LXC::Config->foreach_mountpoint($conf, sub { |
9622e848 DM |
964 | my ($ms, $mountpoint) = @_; |
965 | ||
25321b68 FG |
966 | $mountpoint->{ro} = 0 if $ignore_ro; |
967 | ||
da629848 | 968 | mountpoint_mount($mountpoint, $rootdir, $storage_cfg); |
9622e848 DM |
969 | }); |
970 | }; | |
971 | if (my $err = $@) { | |
e2007ac2 | 972 | warn "mounting container failed\n"; |
9622e848 | 973 | umount_all($vmid, $storage_cfg, $conf, 1); |
e2007ac2 | 974 | die $err; |
9622e848 DM |
975 | } |
976 | ||
da629848 | 977 | return $rootdir; |
9622e848 DM |
978 | } |
979 | ||
980 | ||
b15c75fc | 981 | sub mountpoint_mount_path { |
da629848 | 982 | my ($mountpoint, $storage_cfg, $snapname) = @_; |
b15c75fc | 983 | |
da629848 | 984 | return mountpoint_mount($mountpoint, undef, $storage_cfg, $snapname); |
b15c75fc | 985 | } |
cc6b0307 | 986 | |
21f292ff WB |
987 | sub query_loopdev { |
988 | my ($path) = @_; | |
989 | my $found; | |
990 | my $parser = sub { | |
991 | my $line = shift; | |
992 | if ($line =~ m@^(/dev/loop\d+):@) { | |
993 | $found = $1; | |
994 | } | |
995 | }; | |
996 | my $cmd = ['losetup', '--associated', $path]; | |
997 | PVE::Tools::run_command($cmd, outfunc => $parser); | |
998 | return $found; | |
999 | } | |
1000 | ||
50df544c WB |
1001 | # Run a function with a file attached to a loop device. |
1002 | # The loop device is always detached afterwards (or set to autoclear). | |
1003 | # Returns the loop device. | |
1004 | sub run_with_loopdev { | |
1005 | my ($func, $file) = @_; | |
54d11e5c WB |
1006 | my $device = query_loopdev($file); |
1007 | # Try to reuse an existing device | |
1008 | if ($device) { | |
1009 | # We assume that whoever setup the loop device is responsible for | |
1010 | # detaching it. | |
1011 | &$func($device); | |
1012 | return $device; | |
1013 | } | |
1014 | ||
50df544c WB |
1015 | my $parser = sub { |
1016 | my $line = shift; | |
1017 | if ($line =~ m@^(/dev/loop\d+)$@) { | |
1018 | $device = $1; | |
1019 | } | |
1020 | }; | |
1021 | PVE::Tools::run_command(['losetup', '--show', '-f', $file], outfunc => $parser); | |
1022 | die "failed to setup loop device for $file\n" if !$device; | |
1023 | eval { &$func($device); }; | |
1024 | my $err = $@; | |
1025 | PVE::Tools::run_command(['losetup', '-d', $device]); | |
1026 | die $err if $err; | |
1027 | return $device; | |
1028 | } | |
1029 | ||
ab3722b3 WB |
1030 | # In scalar mode: returns a file handle to the deepest directory node. |
1031 | # In list context: returns a list of: | |
1032 | # * the deepest directory node | |
1033 | # * the 2nd deepest directory (parent of the above) | |
1034 | # * directory name of the last directory | |
1035 | # So that the path $2/$3 should lead to $1 afterwards. | |
1036 | sub walk_tree_nofollow($$$) { | |
1037 | my ($start, $subdir, $mkdir) = @_; | |
1038 | ||
1039 | # splitdir() returns '' for empty components including the leading / | |
1040 | my @comps = grep { length($_)>0 } File::Spec->splitdir($subdir); | |
1041 | ||
1042 | sysopen(my $fd, $start, O_PATH | O_DIRECTORY) | |
1043 | or die "failed to open start directory $start: $!\n"; | |
1044 | ||
1045 | my $dir = $start; | |
1046 | my $last_component = undef; | |
1047 | my $second = $fd; | |
1048 | foreach my $component (@comps) { | |
1049 | $dir .= "/$component"; | |
1050 | my $next = PVE::Tools::openat(fileno($fd), $component, O_NOFOLLOW | O_DIRECTORY); | |
1051 | ||
1052 | if (!$next) { | |
1053 | # failed, check for symlinks and try to create the path | |
3eb5f47b | 1054 | die "symlink encountered at: $dir\n" if $! == ELOOP || $! == ENOTDIR; |
ab3722b3 WB |
1055 | die "cannot open directory $dir: $!\n" if !$mkdir; |
1056 | ||
1057 | # We don't check for errors on mkdirat() here and just try to | |
1058 | # openat() again, since at least one error (EEXIST) is an | |
1059 | # expected possibility if multiple containers start | |
1060 | # simultaneously. If someone else injects a symlink now then | |
1061 | # the subsequent openat() will fail due to O_NOFOLLOW anyway. | |
1062 | PVE::Tools::mkdirat(fileno($fd), $component, 0755); | |
1063 | ||
1064 | $next = PVE::Tools::openat(fileno($fd), $component, O_NOFOLLOW | O_DIRECTORY); | |
1065 | die "failed to create path: $dir: $!\n" if !$next; | |
1066 | } | |
1067 | ||
1068 | close $second if defined($last_component); | |
1069 | $last_component = $component; | |
1070 | $second = $fd; | |
1071 | $fd = $next; | |
1072 | } | |
1073 | ||
1074 | return ($fd, defined($last_component) && $second, $last_component) if wantarray; | |
1075 | close $second if defined($last_component); | |
1076 | return $fd; | |
1077 | } | |
1078 | ||
619f27b4 WB |
1079 | # To guard against symlink attack races against other currently running |
1080 | # containers with shared recursive bind mount hierarchies we prepare a | |
1081 | # directory handle for the directory we're mounting over to verify the | |
1082 | # mountpoint afterwards. | |
1083 | sub __bindmount_prepare { | |
1084 | my ($hostroot, $dir) = @_; | |
1085 | my $srcdh = walk_tree_nofollow($hostroot, $dir, 0); | |
1086 | return $srcdh; | |
1087 | } | |
ab3722b3 | 1088 | |
619f27b4 WB |
1089 | # Assuming we mount to rootfs/a/b/c, verify with the directory handle to 'b' |
1090 | # ($parentfd) that 'b/c' (openat($parentfd, 'c')) really leads to the directory | |
1091 | # we intended to bind mount. | |
1092 | sub __bindmount_verify { | |
1093 | my ($srcdh, $parentfd, $last_dir, $ro) = @_; | |
ab3722b3 WB |
1094 | my $destdh; |
1095 | if ($parentfd) { | |
1096 | # Open the mount point path coming from the parent directory since the | |
1097 | # filehandle we would have gotten as first result of walk_tree_nofollow | |
1098 | # earlier is still a handle to the underlying directory instead of the | |
1099 | # mounted path. | |
619f27b4 WB |
1100 | $destdh = PVE::Tools::openat(fileno($parentfd), $last_dir, PVE::Tools::O_PATH | O_NOFOLLOW | O_DIRECTORY); |
1101 | die "failed to open mount point: $!\n" if !$destdh; | |
1102 | if ($ro) { | |
1103 | my $dot = '.'; | |
619f27b4 | 1104 | # no separate function because 99% of the time it's the wrong thing to use. |
0389da0d | 1105 | if (syscall(PVE::Syscall::faccessat, fileno($destdh), $dot, &POSIX::W_OK, 0) != -1) { |
619f27b4 WB |
1106 | die "failed to mark bind mount read only\n"; |
1107 | } | |
1108 | die "read-only check failed: $!\n" if $! != EROFS; | |
1109 | } | |
ab3722b3 WB |
1110 | } else { |
1111 | # For the rootfs we don't have a parentfd so we open the path directly. | |
1112 | # Note that this means bindmounting any prefix of the host's | |
1113 | # /var/lib/lxc/$vmid path into another container is considered a grave | |
1114 | # security error. | |
1115 | sysopen $destdh, $last_dir, O_PATH | O_DIRECTORY; | |
619f27b4 | 1116 | die "failed to open mount point: $!\n" if !$destdh; |
ab3722b3 | 1117 | } |
ab3722b3 WB |
1118 | |
1119 | my ($srcdev, $srcinode) = stat($srcdh); | |
1120 | my ($dstdev, $dstinode) = stat($destdh); | |
1121 | close $srcdh; | |
1122 | close $destdh; | |
1123 | ||
619f27b4 WB |
1124 | return ($srcdev == $dstdev && $srcinode == $dstinode); |
1125 | } | |
1126 | ||
1127 | # Perform the actual bind mounting: | |
1128 | sub __bindmount_do { | |
1129 | my ($dir, $dest, $ro, @extra_opts) = @_; | |
1130 | PVE::Tools::run_command(['mount', '-o', 'bind', @extra_opts, $dir, $dest]); | |
1131 | if ($ro) { | |
1132 | eval { PVE::Tools::run_command(['mount', '-o', 'bind,remount,ro', $dest]); }; | |
1133 | if (my $err = $@) { | |
1134 | warn "bindmount error\n"; | |
1135 | # don't leave writable bind-mounts behind... | |
1136 | PVE::Tools::run_command(['umount', $dest]); | |
1137 | die $err; | |
1138 | } | |
1139 | } | |
1140 | } | |
1141 | ||
1142 | sub bindmount { | |
1143 | my ($dir, $parentfd, $last_dir, $dest, $ro, @extra_opts) = @_; | |
1144 | ||
1145 | my $srcdh = __bindmount_prepare('/', $dir); | |
1146 | ||
1147 | __bindmount_do($dir, $dest, $ro, @extra_opts); | |
1148 | ||
1149 | if (!__bindmount_verify($srcdh, $parentfd, $last_dir, $ro)) { | |
ab3722b3 WB |
1150 | PVE::Tools::run_command(['umount', $dest]); |
1151 | die "detected mount path change at: $dir\n"; | |
1152 | } | |
c2744c97 WB |
1153 | } |
1154 | ||
619f27b4 WB |
1155 | # Cleanup $rootdir a bit (double and trailing slashes), build the mount path |
1156 | # from $rootdir and $mount and walk the path from $rootdir to the final | |
1157 | # directory to check for symlinks. | |
1158 | sub __mount_prepare_rootdir { | |
1159 | my ($rootdir, $mount) = @_; | |
1160 | $rootdir =~ s!/+!/!g; | |
1161 | $rootdir =~ s!/+$!!; | |
1162 | my $mount_path = "$rootdir/$mount"; | |
1163 | my ($mpfd, $parentfd, $last_dir) = walk_tree_nofollow($rootdir, $mount, 1); | |
1164 | return ($rootdir, $mount_path, $mpfd, $parentfd, $last_dir); | |
1165 | } | |
1166 | ||
b15c75fc | 1167 | # use $rootdir = undef to just return the corresponding mount path |
cc6b0307 | 1168 | sub mountpoint_mount { |
da629848 | 1169 | my ($mountpoint, $rootdir, $storage_cfg, $snapname) = @_; |
cc6b0307 AD |
1170 | |
1171 | my $volid = $mountpoint->{volume}; | |
1172 | my $mount = $mountpoint->{mp}; | |
7c921c80 | 1173 | my $type = $mountpoint->{type}; |
50df544c WB |
1174 | my $quota = !$snapname && !$mountpoint->{ro} && $mountpoint->{quota}; |
1175 | my $mounted_dev; | |
b15c75fc | 1176 | |
cc6b0307 AD |
1177 | return if !$volid || !$mount; |
1178 | ||
ab3722b3 WB |
1179 | $mount =~ s!/+!/!g; |
1180 | ||
b15c75fc | 1181 | my $mount_path; |
ab3722b3 | 1182 | my ($mpfd, $parentfd, $last_dir); |
b15c75fc DM |
1183 | |
1184 | if (defined($rootdir)) { | |
619f27b4 WB |
1185 | ($rootdir, $mount_path, $mpfd, $parentfd, $last_dir) = |
1186 | __mount_prepare_rootdir($rootdir, $mount); | |
116ce06f | 1187 | } |
b15c75fc DM |
1188 | |
1189 | my ($storage, $volname) = PVE::Storage::parse_volume_id($volid, 1); | |
cc6b0307 | 1190 | |
b15c75fc | 1191 | die "unknown snapshot path for '$volid'" if !$storage && defined($snapname); |
cc6b0307 | 1192 | |
471dd315 | 1193 | my $optstring = ''; |
719129ea WB |
1194 | my $acl = $mountpoint->{acl}; |
1195 | if (defined($acl)) { | |
1196 | $optstring .= ($acl ? 'acl' : 'noacl'); | |
471dd315 | 1197 | } |
c2744c97 | 1198 | my $readonly = $mountpoint->{ro}; |
471dd315 | 1199 | |
c019c56a | 1200 | my @extra_opts = ('-o', $optstring) if $optstring; |
471dd315 | 1201 | |
b15c75fc DM |
1202 | if ($storage) { |
1203 | ||
1204 | my $scfg = PVE::Storage::storage_config($storage_cfg, $storage); | |
7c138f58 WB |
1205 | |
1206 | # early sanity checks: | |
1207 | # we otherwise call realpath on the rbd url | |
1208 | die "containers on rbd storage without krbd are not supported\n" | |
1209 | if $scfg->{type} eq 'rbd' && !$scfg->{krbd}; | |
1210 | ||
b15c75fc DM |
1211 | my $path = PVE::Storage::path($storage_cfg, $volid, $snapname); |
1212 | ||
1213 | my ($vtype, undef, undef, undef, undef, $isBase, $format) = | |
1214 | PVE::Storage::parse_volname($storage_cfg, $volid); | |
1215 | ||
c87b9dd8 DM |
1216 | $format = 'iso' if $vtype eq 'iso'; # allow to handle iso files |
1217 | ||
b15c75fc | 1218 | if ($format eq 'subvol') { |
30de33be DM |
1219 | if ($mount_path) { |
1220 | if ($snapname) { | |
e84f7f5d DM |
1221 | if ($scfg->{type} eq 'zfspool') { |
1222 | my $path_arg = $path; | |
1223 | $path_arg =~ s!^/+!!; | |
471dd315 | 1224 | PVE::Tools::run_command(['mount', '-o', 'ro', @extra_opts, '-t', 'zfs', $path_arg, $mount_path]); |
e84f7f5d | 1225 | } else { |
30de33be DM |
1226 | die "cannot mount subvol snapshots for storage type '$scfg->{type}'\n"; |
1227 | } | |
e84f7f5d | 1228 | } else { |
719129ea WB |
1229 | if (defined($acl) && $scfg->{type} eq 'zfspool') { |
1230 | my $acltype = ($acl ? 'acltype=posixacl' : 'acltype=noacl'); | |
1231 | my (undef, $name) = PVE::Storage::parse_volname($storage_cfg, $volid); | |
1232 | $name .= "\@$snapname" if defined($snapname); | |
1233 | PVE::Tools::run_command(['zfs', 'set', $acltype, "$scfg->{pool}/$name"]); | |
1234 | } | |
ab3722b3 | 1235 | bindmount($path, $parentfd, $last_dir//$rootdir, $mount_path, $readonly, @extra_opts); |
50df544c | 1236 | warn "cannot enable quota control for bind mounted subvolumes\n" if $quota; |
30de33be | 1237 | } |
b15c75fc | 1238 | } |
5f6280cf | 1239 | return wantarray ? ($path, 0, undef) : $path; |
c87b9dd8 | 1240 | } elsif ($format eq 'raw' || $format eq 'iso') { |
ada088e6 WB |
1241 | # NOTE: 'mount' performs canonicalization without the '-c' switch, which for |
1242 | # device-mapper devices is special-cased to use the /dev/mapper symlinks. | |
1243 | # Our autodev hook expects the /dev/dm-* device currently | |
1244 | # and will create the /dev/mapper symlink accordingly | |
e439a713 WB |
1245 | $path = Cwd::realpath($path); |
1246 | die "failed to get device path\n" if !$path; | |
1247 | ($path) = ($path =~ /^(.*)$/s); #untaint | |
50df544c WB |
1248 | my $domount = sub { |
1249 | my ($path) = @_; | |
1250 | if ($mount_path) { | |
1251 | if ($format eq 'iso') { | |
1252 | PVE::Tools::run_command(['mount', '-o', 'ro', @extra_opts, $path, $mount_path]); | |
1253 | } elsif ($isBase || defined($snapname)) { | |
1254 | PVE::Tools::run_command(['mount', '-o', 'ro,noload', @extra_opts, $path, $mount_path]); | |
1255 | } else { | |
1256 | if ($quota) { | |
1257 | push @extra_opts, '-o', 'usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0'; | |
1258 | } | |
c2744c97 | 1259 | push @extra_opts, '-o', 'ro' if $readonly; |
50df544c WB |
1260 | PVE::Tools::run_command(['mount', @extra_opts, $path, $mount_path]); |
1261 | } | |
1262 | } | |
1263 | }; | |
30de33be | 1264 | my $use_loopdev = 0; |
b15c75fc | 1265 | if ($scfg->{path}) { |
50df544c | 1266 | $mounted_dev = run_with_loopdev($domount, $path); |
30de33be | 1267 | $use_loopdev = 1; |
2e879877 DM |
1268 | } elsif ($scfg->{type} eq 'drbd' || $scfg->{type} eq 'lvm' || |
1269 | $scfg->{type} eq 'rbd' || $scfg->{type} eq 'lvmthin') { | |
50df544c WB |
1270 | $mounted_dev = $path; |
1271 | &$domount($path); | |
b15c75fc DM |
1272 | } else { |
1273 | die "unsupported storage type '$scfg->{type}'\n"; | |
1274 | } | |
50df544c | 1275 | return wantarray ? ($path, $use_loopdev, $mounted_dev) : $path; |
b15c75fc DM |
1276 | } else { |
1277 | die "unsupported image format '$format'\n"; | |
1278 | } | |
7c921c80 | 1279 | } elsif ($type eq 'device') { |
c9bc95a1 | 1280 | push @extra_opts, '-o', 'ro' if $readonly; |
0d449e38 WB |
1281 | push @extra_opts, '-o', 'usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0' if $quota; |
1282 | # See the NOTE above about devicemapper canonicalization | |
1283 | my ($devpath) = (Cwd::realpath($volid) =~ /^(.*)$/s); # realpath() taints | |
471dd315 | 1284 | PVE::Tools::run_command(['mount', @extra_opts, $volid, $mount_path]) if $mount_path; |
0d449e38 | 1285 | return wantarray ? ($volid, 0, $devpath) : $volid; |
e2007ac2 DM |
1286 | } elsif ($type eq 'bind') { |
1287 | die "directory '$volid' does not exist\n" if ! -d $volid; | |
ab3722b3 | 1288 | bindmount($volid, $parentfd, $last_dir//$rootdir, $mount_path, $readonly, @extra_opts) if $mount_path; |
50df544c WB |
1289 | warn "cannot enable quota control for bind mounts\n" if $quota; |
1290 | return wantarray ? ($volid, 0, undef) : $volid; | |
b15c75fc DM |
1291 | } |
1292 | ||
1293 | die "unsupported storage"; | |
cc6b0307 AD |
1294 | } |
1295 | ||
6c871c36 | 1296 | sub mkfs { |
d216e891 | 1297 | my ($dev, $rootuid, $rootgid) = @_; |
6c871c36 | 1298 | |
d216e891 WB |
1299 | PVE::Tools::run_command(['mkfs.ext4', '-O', 'mmp', |
1300 | '-E', "root_owner=$rootuid:$rootgid", | |
1301 | $dev]); | |
6c871c36 DM |
1302 | } |
1303 | ||
1304 | sub format_disk { | |
d216e891 | 1305 | my ($storage_cfg, $volid, $rootuid, $rootgid) = @_; |
6c871c36 DM |
1306 | |
1307 | if ($volid =~ m!^/dev/.+!) { | |
1308 | mkfs($volid); | |
1309 | return; | |
1310 | } | |
1311 | ||
1312 | my ($storage, $volname) = PVE::Storage::parse_volume_id($volid, 1); | |
1313 | ||
1314 | die "cannot format volume '$volid' with no storage\n" if !$storage; | |
1315 | ||
08ca136d DM |
1316 | PVE::Storage::activate_volumes($storage_cfg, [$volid]); |
1317 | ||
6c871c36 DM |
1318 | my $path = PVE::Storage::path($storage_cfg, $volid); |
1319 | ||
1320 | my ($vtype, undef, undef, undef, undef, $isBase, $format) = | |
1321 | PVE::Storage::parse_volname($storage_cfg, $volid); | |
1322 | ||
1323 | die "cannot format volume '$volid' (format == $format)\n" | |
1324 | if $format ne 'raw'; | |
1325 | ||
d216e891 | 1326 | mkfs($path, $rootuid, $rootgid); |
6c871c36 DM |
1327 | } |
1328 | ||
1329 | sub destroy_disks { | |
1330 | my ($storecfg, $vollist) = @_; | |
1331 | ||
1332 | foreach my $volid (@$vollist) { | |
1333 | eval { PVE::Storage::vdisk_free($storecfg, $volid); }; | |
1334 | warn $@ if $@; | |
1335 | } | |
1336 | } | |
1337 | ||
c9cf8008 WB |
1338 | sub alloc_disk { |
1339 | my ($storecfg, $vmid, $storage, $size_kb, $rootuid, $rootgid) = @_; | |
1340 | ||
1341 | my $needs_chown = 0; | |
1342 | my $volid; | |
1343 | ||
1344 | my $scfg = PVE::Storage::storage_config($storecfg, $storage); | |
1345 | # fixme: use better naming ct-$vmid-disk-X.raw? | |
1346 | ||
1347 | eval { | |
1348 | my $do_format = 0; | |
1349 | if ($scfg->{type} eq 'dir' || $scfg->{type} eq 'nfs') { | |
1350 | if ($size_kb > 0) { | |
1351 | $volid = PVE::Storage::vdisk_alloc($storecfg, $storage, $vmid, 'raw', | |
1352 | undef, $size_kb); | |
1353 | $do_format = 1; | |
1354 | } else { | |
1355 | $volid = PVE::Storage::vdisk_alloc($storecfg, $storage, $vmid, 'subvol', | |
1356 | undef, 0); | |
1357 | $needs_chown = 1; | |
1358 | } | |
1359 | } elsif ($scfg->{type} eq 'zfspool') { | |
1360 | ||
1361 | $volid = PVE::Storage::vdisk_alloc($storecfg, $storage, $vmid, 'subvol', | |
1362 | undef, $size_kb); | |
1363 | $needs_chown = 1; | |
1364 | } elsif ($scfg->{type} eq 'drbd' || $scfg->{type} eq 'lvm' || $scfg->{type} eq 'lvmthin') { | |
1365 | ||
1366 | $volid = PVE::Storage::vdisk_alloc($storecfg, $storage, $vmid, 'raw', undef, $size_kb); | |
1367 | $do_format = 1; | |
1368 | ||
1369 | } elsif ($scfg->{type} eq 'rbd') { | |
1370 | ||
1371 | die "krbd option must be enabled on storage type '$scfg->{type}'\n" if !$scfg->{krbd}; | |
1372 | $volid = PVE::Storage::vdisk_alloc($storecfg, $storage, $vmid, 'raw', undef, $size_kb); | |
1373 | $do_format = 1; | |
1374 | } else { | |
1375 | die "unable to create containers on storage type '$scfg->{type}'\n"; | |
1376 | } | |
1377 | format_disk($storecfg, $volid, $rootuid, $rootgid) if $do_format; | |
1378 | }; | |
1379 | if (my $err = $@) { | |
1380 | # in case formatting got interrupted: | |
1381 | if (defined($volid)) { | |
1382 | eval { PVE::Storage::vdisk_free($storecfg, $volid); }; | |
1383 | warn $@ if $@; | |
1384 | } | |
1385 | die $err; | |
1386 | } | |
1387 | ||
1388 | return ($volid, $needs_chown); | |
1389 | } | |
1390 | ||
2aee38e5 | 1391 | our $NEW_DISK_RE = qr/^([^:\s]+):(\d+(\.\d+)?)$/; |
6c871c36 DM |
1392 | sub create_disks { |
1393 | my ($storecfg, $vmid, $settings, $conf) = @_; | |
1394 | ||
1395 | my $vollist = []; | |
1396 | ||
1397 | eval { | |
d216e891 WB |
1398 | my (undef, $rootuid, $rootgid) = PVE::LXC::parse_id_maps($conf); |
1399 | my $chown_vollist = []; | |
1400 | ||
d250604f | 1401 | PVE::LXC::Config->foreach_mountpoint($settings, sub { |
6c871c36 DM |
1402 | my ($ms, $mountpoint) = @_; |
1403 | ||
1404 | my $volid = $mountpoint->{volume}; | |
1405 | my $mp = $mountpoint->{mp}; | |
1406 | ||
1407 | my ($storage, $volname) = PVE::Storage::parse_volume_id($volid, 1); | |
1408 | ||
2aee38e5 | 1409 | if ($storage && ($volid =~ $NEW_DISK_RE)) { |
8ed5ff9d | 1410 | my ($storeid, $size_gb) = ($1, $2); |
6c871c36 | 1411 | |
8ed5ff9d | 1412 | my $size_kb = int(${size_gb}*1024) * 1024; |
6c871c36 | 1413 | |
c9cf8008 WB |
1414 | my $needs_chown = 0; |
1415 | ($volid, $needs_chown) = alloc_disk($storecfg, $vmid, $storage, $size_kb, $rootuid, $rootgid); | |
1416 | push @$chown_vollist, $volid if $needs_chown; | |
6c871c36 | 1417 | push @$vollist, $volid; |
71c780b9 WB |
1418 | $mountpoint->{volume} = $volid; |
1419 | $mountpoint->{size} = $size_kb * 1024; | |
1b4cf758 | 1420 | $conf->{$ms} = PVE::LXC::Config->print_ct_mountpoint($mountpoint, $ms eq 'rootfs'); |
6c871c36 | 1421 | } else { |
e2007ac2 | 1422 | # use specified/existing volid/dir/device |
1b4cf758 | 1423 | $conf->{$ms} = PVE::LXC::Config->print_ct_mountpoint($mountpoint, $ms eq 'rootfs'); |
6c871c36 DM |
1424 | } |
1425 | }); | |
d216e891 WB |
1426 | |
1427 | PVE::Storage::activate_volumes($storecfg, $chown_vollist, undef); | |
1428 | foreach my $volid (@$chown_vollist) { | |
1429 | my $path = PVE::Storage::path($storecfg, $volid, undef); | |
1430 | chown($rootuid, $rootgid, $path); | |
1431 | } | |
1432 | PVE::Storage::deactivate_volumes($storecfg, $chown_vollist, undef); | |
6c871c36 DM |
1433 | }; |
1434 | # free allocated images on error | |
1435 | if (my $err = $@) { | |
1436 | destroy_disks($storecfg, $vollist); | |
1437 | die $err; | |
1438 | } | |
1439 | return $vollist; | |
1440 | } | |
1441 | ||
68e8f3c5 DM |
1442 | # bash completion helper |
1443 | ||
1444 | sub complete_os_templates { | |
1445 | my ($cmdname, $pname, $cvalue) = @_; | |
1446 | ||
1447 | my $cfg = PVE::Storage::config(); | |
1448 | ||
9e9bc3a6 | 1449 | my $storeid; |
68e8f3c5 DM |
1450 | |
1451 | if ($cvalue =~ m/^([^:]+):/) { | |
1452 | $storeid = $1; | |
1453 | } | |
1454 | ||
1455 | my $vtype = $cmdname eq 'restore' ? 'backup' : 'vztmpl'; | |
1456 | my $data = PVE::Storage::template_list($cfg, $storeid, $vtype); | |
1457 | ||
1458 | my $res = []; | |
1459 | foreach my $id (keys %$data) { | |
1460 | foreach my $item (@{$data->{$id}}) { | |
1461 | push @$res, $item->{volid} if defined($item->{volid}); | |
1462 | } | |
1463 | } | |
1464 | ||
1465 | return $res; | |
1466 | } | |
1467 | ||
68e8f3c5 DM |
1468 | my $complete_ctid_full = sub { |
1469 | my ($running) = @_; | |
1470 | ||
1471 | my $idlist = vmstatus(); | |
1472 | ||
1473 | my $active_hash = list_active_containers(); | |
1474 | ||
1475 | my $res = []; | |
1476 | ||
1477 | foreach my $id (keys %$idlist) { | |
1478 | my $d = $idlist->{$id}; | |
1479 | if (defined($running)) { | |
1480 | next if $d->{template}; | |
1481 | next if $running && !$active_hash->{$id}; | |
1482 | next if !$running && $active_hash->{$id}; | |
1483 | } | |
1484 | push @$res, $id; | |
1485 | ||
1486 | } | |
1487 | return $res; | |
1488 | }; | |
1489 | ||
1490 | sub complete_ctid { | |
1491 | return &$complete_ctid_full(); | |
1492 | } | |
1493 | ||
1494 | sub complete_ctid_stopped { | |
1495 | return &$complete_ctid_full(0); | |
1496 | } | |
1497 | ||
1498 | sub complete_ctid_running { | |
1499 | return &$complete_ctid_full(1); | |
1500 | } | |
1501 | ||
c6a605f9 WB |
1502 | sub parse_id_maps { |
1503 | my ($conf) = @_; | |
1504 | ||
1505 | my $id_map = []; | |
1506 | my $rootuid = 0; | |
1507 | my $rootgid = 0; | |
1508 | ||
1509 | my $lxc = $conf->{lxc}; | |
1510 | foreach my $entry (@$lxc) { | |
1511 | my ($key, $value) = @$entry; | |
108c6cab WB |
1512 | # FIXME: remove the 'id_map' variant when lxc-3.0 arrives |
1513 | next if $key ne 'lxc.idmap' && $key ne 'lxc.id_map'; | |
c6a605f9 WB |
1514 | if ($value =~ /^([ug])\s+(\d+)\s+(\d+)\s+(\d+)\s*$/) { |
1515 | my ($type, $ct, $host, $length) = ($1, $2, $3, $4); | |
1516 | push @$id_map, [$type, $ct, $host, $length]; | |
1517 | if ($ct == 0) { | |
1518 | $rootuid = $host if $type eq 'u'; | |
1519 | $rootgid = $host if $type eq 'g'; | |
1520 | } | |
1521 | } else { | |
108c6cab | 1522 | die "failed to parse idmap: $value\n"; |
c6a605f9 WB |
1523 | } |
1524 | } | |
1525 | ||
1526 | if (!@$id_map && $conf->{unprivileged}) { | |
1527 | # Should we read them from /etc/subuid? | |
1528 | $id_map = [ ['u', '0', '100000', '65536'], | |
1529 | ['g', '0', '100000', '65536'] ]; | |
1530 | $rootuid = $rootgid = 100000; | |
1531 | } | |
1532 | ||
1533 | return ($id_map, $rootuid, $rootgid); | |
1534 | } | |
1535 | ||
01dce99b WB |
1536 | sub userns_command { |
1537 | my ($id_map) = @_; | |
1538 | if (@$id_map) { | |
1539 | return ['lxc-usernsexec', (map { ('-m', join(':', @$_)) } @$id_map), '--']; | |
1540 | } | |
1541 | return []; | |
1542 | } | |
1543 | ||
6725e93c AA |
1544 | sub vm_start { |
1545 | my ($vmid, $conf, $skiplock) = @_; | |
1546 | ||
1547 | update_lxc_config($vmid, $conf); | |
1548 | ||
2e64f057 AA |
1549 | my $skiplock_flag_fn = "/run/lxc/skiplock-$vmid"; |
1550 | ||
1551 | if ($skiplock) { | |
1552 | open(my $fh, '>', $skiplock_flag_fn) || die "failed to open $skiplock_flag_fn for writing: $!\n"; | |
1553 | close($fh); | |
1554 | } | |
6725e93c AA |
1555 | |
1556 | my $cmd = ['systemctl', 'start', "pve-container\@$vmid"]; | |
1557 | ||
2e64f057 AA |
1558 | eval { PVE::Tools::run_command($cmd); }; |
1559 | if (my $err = $@) { | |
1560 | unlink $skiplock_flag_fn; | |
1322f50d | 1561 | die $err; |
2e64f057 | 1562 | } |
6725e93c AA |
1563 | |
1564 | return; | |
1565 | } | |
1566 | ||
b1bad293 WB |
1567 | # Helper to stop a container completely and make sure it has stopped completely. |
1568 | # This is necessary because we want the post-stop hook to have completed its | |
1569 | # unmount-all step, but post-stop happens after lxc puts the container into the | |
1570 | # STOPPED state. | |
1571 | sub vm_stop { | |
1572 | my ($vmid, $kill, $shutdown_timeout, $exit_timeout) = @_; | |
1573 | ||
1574 | # Open the container's command socket. | |
1575 | my $path = "\0/var/lib/lxc/$vmid/command"; | |
1576 | my $sock = IO::Socket::UNIX->new( | |
1577 | Type => SOCK_STREAM(), | |
1578 | Peer => $path, | |
1579 | ); | |
1580 | if (!$sock) { | |
1581 | return if $! == ECONNREFUSED; # The container is not running | |
1582 | die "failed to open container ${vmid}'s command socket: $!\n"; | |
1583 | } | |
1584 | ||
1585 | # Stop the container: | |
1586 | ||
1587 | my $cmd = ['lxc-stop', '-n', $vmid]; | |
1588 | ||
1589 | if ($kill) { | |
1590 | push @$cmd, '--kill'; # doesn't allow timeouts | |
1591 | } elsif (defined($shutdown_timeout)) { | |
1592 | push @$cmd, '--timeout', $shutdown_timeout; | |
1593 | # Give run_command 5 extra seconds | |
1594 | $shutdown_timeout += 5; | |
1595 | } | |
1596 | ||
1597 | eval { PVE::Tools::run_command($cmd, timeout => $shutdown_timeout) }; | |
1598 | if (my $err = $@) { | |
1599 | warn $@ if $@; | |
1600 | } | |
1601 | ||
1602 | my $result = 1; | |
1603 | my $wait = sub { $result = <$sock>; }; | |
1604 | if (defined($exit_timeout)) { | |
1605 | PVE::Tools::run_with_timeout($exit_timeout, $wait); | |
1606 | } else { | |
1607 | $wait->(); | |
1608 | } | |
1609 | ||
1610 | return if !defined $result; # monitor is gone and the ct has stopped. | |
1611 | die "container did not stop\n"; | |
1612 | } | |
846a66b0 | 1613 | |
00501642 WB |
1614 | sub run_unshared { |
1615 | my ($code) = @_; | |
1616 | ||
1617 | return PVE::Tools::run_fork(sub { | |
1618 | # Unshare the mount namespace | |
1619 | die "failed to unshare mount namespace: $!\n" | |
1620 | if !PVE::Tools::unshare(PVE::Tools::CLONE_NEWNS); | |
1621 | PVE::Tools::run_command(['mount', '--make-rslave', '/']); | |
1622 | return $code->(); | |
1623 | }); | |
1624 | } | |
1625 | ||
1626 | my $copy_volume = sub { | |
1627 | my ($src_volid, $src, $dst_volid, $dest, $storage_cfg, $snapname) = @_; | |
1628 | ||
1629 | my $src_mp = { volume => $src_volid, mp => '/' }; | |
1630 | $src_mp->{type} = PVE::LXC::Config->classify_mountpoint($src_volid); | |
1631 | ||
1632 | my $dst_mp = { volume => $dst_volid, mp => '/' }; | |
1633 | $dst_mp->{type} = PVE::LXC::Config->classify_mountpoint($dst_volid); | |
1634 | ||
1635 | my @mounted; | |
1636 | eval { | |
1637 | # mount and copy | |
1638 | mkdir $src; | |
1639 | mountpoint_mount($src_mp, $src, $storage_cfg, $snapname); | |
1640 | push @mounted, $src; | |
1641 | mkdir $dest; | |
1642 | mountpoint_mount($dst_mp, $dest, $storage_cfg); | |
1643 | push @mounted, $dest; | |
1644 | ||
1645 | PVE::Tools::run_command(['/usr/bin/rsync', '--stats', '-X', '-A', '--numeric-ids', | |
1646 | '-aH', '--whole-file', '--sparse', '--one-file-system', | |
1647 | "$src/", $dest]); | |
1648 | }; | |
1649 | my $err = $@; | |
1650 | foreach my $mount (reverse @mounted) { | |
1651 | eval { PVE::Tools::run_command(['/bin/umount', '--lazy', $mount], errfunc => sub{})}; | |
1652 | warn "Can't umount $mount\n" if $@; | |
1653 | } | |
1654 | ||
1655 | # If this fails they're used as mount points in a concurrent operation | |
1656 | # (which should not happen but there's also no real need to get rid of them). | |
1657 | rmdir $dest; | |
1658 | rmdir $src; | |
1659 | ||
1660 | die $err if $err; | |
1661 | }; | |
1662 | ||
1663 | # Should not be called after unsharing the mount namespace! | |
1664 | sub copy_volume { | |
1665 | my ($mp, $vmid, $storage, $storage_cfg, $conf, $snapname) = @_; | |
1666 | ||
1667 | die "cannot copy volumes of type $mp->{type}\n" if $mp->{type} ne 'volume'; | |
1668 | File::Path::make_path("/var/lib/lxc/$vmid"); | |
1669 | my $dest = "/var/lib/lxc/$vmid/.copy-volume-1"; | |
1670 | my $src = "/var/lib/lxc/$vmid/.copy-volume-2"; | |
1671 | ||
1672 | # get id's for unprivileged container | |
1673 | my (undef, $rootuid, $rootgid) = parse_id_maps($conf); | |
1674 | ||
1675 | # Allocate the disk before unsharing in order to make sure zfs subvolumes | |
1676 | # are visible in this namespace, otherwise the host only sees the empty | |
1677 | # (not-mounted) directory. | |
1678 | my $new_volid; | |
1679 | eval { | |
1680 | my $needs_chown; | |
1681 | ($new_volid, $needs_chown) = alloc_disk($storage_cfg, $vmid, $storage, $mp->{size}/1024, $rootuid, $rootgid); | |
1682 | if ($needs_chown) { | |
1683 | PVE::Storage::activate_volumes($storage_cfg, [$new_volid], undef); | |
1684 | my $path = PVE::Storage::path($storage_cfg, $new_volid, undef); | |
1685 | chown($rootuid, $rootgid, $path); | |
1686 | } | |
1687 | ||
1688 | run_unshared(sub { | |
1689 | $copy_volume->($mp->{volume}, $src, $new_volid, $dest, $storage_cfg, $snapname); | |
1690 | }); | |
1691 | }; | |
1692 | if (my $err = $@) { | |
1693 | PVE::Storage::vdisk_free($storage_cfg, $new_volid) | |
1694 | if defined($new_volid); | |
1695 | die $err; | |
1696 | } | |
1697 | ||
1698 | return $new_volid; | |
1699 | } | |
1700 | ||
f76a2828 | 1701 | 1; |