fix NoAccess when inheritred from pool
[pve-access-control.git] / PVE / RPCEnvironment.pm
CommitLineData
2c3a6c0a
DM
1package PVE::RPCEnvironment;
2
3use strict;
4use warnings;
8d6e045f 5use POSIX qw(:sys_wait_h EINTR);
b28410fc 6use IO::Handle;
2c3a6c0a 7use IO::File;
b28410fc 8use IO::Select;
2c3a6c0a 9use Fcntl qw(:flock);
37d45deb 10use PVE::Exception qw(raise raise_perm_exc);
2c3a6c0a
DM
11use PVE::SafeSyslog;
12use PVE::Tools;
13use PVE::INotify;
14use PVE::Cluster;
15use PVE::ProcFSTools;
16use PVE::AccessControl;
7b24102d 17use CGI;
2c3a6c0a
DM
18
19# we use this singleton class to pass RPC related environment values
20
21my $pve_env;
22
23# save $SIG{CHLD} handler implementation.
24# simply set $SIG{CHLD} = $worker_reaper;
25# and register forked processes with &$register_worker(pid)
26# Note: using $SIG{CHLD} = 'IGNORE' or $SIG{CHLD} = sub { wait (); } or ...
27# has serious side effects, because perls built in system() and open()
28# functions can't get the correct exit status of a child. So we cant use
29# that (also see perlipc)
30
31my $WORKER_PIDS;
32
33my $log_task_result = sub {
34 my ($upid, $user, $status) = @_;
35
36 my $msg = 'successful';
37 my $pri = 'info';
38 if ($status != 0) {
39 my $ec = $status >> 8;
40 my $ic = $status & 255;
41 $msg = $ec ? "failed ($ec)" : "interrupted ($ic)";
42 $pri = 'err';
43 }
44 my $tlist = active_workers($upid);
45 PVE::Cluster::broadcast_tasklist($tlist);
46 my $task;
47 foreach my $t (@$tlist) {
48 if ($t->{upid} eq $upid) {
49 $task = $t;
50 last;
51 }
52 }
53 if ($task && $task->{status}) {
54 $msg = $task->{status};
55 }
56 PVE::Cluster::log_msg($pri, $user, "end task $upid $msg");
57};
58
59my $worker_reaper = sub {
60 local $!; local $?;
61 foreach my $pid (keys %$WORKER_PIDS) {
62 my $waitpid = waitpid ($pid, WNOHANG);
63 if (defined($waitpid) && ($waitpid == $pid)) {
64 my $info = $WORKER_PIDS->{$pid};
65 if ($info && $info->{upid} && $info->{user}) {
66 &$log_task_result($info->{upid}, $info->{user}, $?);
67 }
68 delete ($WORKER_PIDS->{$pid});
69 }
70 }
71};
72
73my $register_worker = sub {
74 my ($pid, $user, $upid) = @_;
75
76 return if !$pid;
77
78 # do not register if already finished
79 my $waitpid = waitpid ($pid, WNOHANG);
80 if (defined($waitpid) && ($waitpid == $pid)) {
81 delete ($WORKER_PIDS->{$pid});
82 return;
83 }
84
85 $WORKER_PIDS->{$pid} = {
86 user => $user,
87 upid => $upid,
88 };
89};
90
91# ACL cache
92
4bc17477
DM
93my $compile_acl_path = sub {
94 my ($self, $user, $path) = @_;
2c3a6c0a 95
2c3a6c0a
DM
96 my $cfg = $self->{user_cfg};
97
98 return undef if !$cfg->{roles};
99
4bc17477 100 die "internal error" if $user eq 'root@pam';
2c3a6c0a 101
4bc17477
DM
102 my $cache = $self->{aclcache};
103 $cache->{$user} = {} if !$cache->{$user};
104 my $data = $cache->{$user};
2c3a6c0a 105
4bc17477
DM
106 if (!$data->{poolroles}) {
107 $data->{poolroles} = {};
108
109 foreach my $poolpath (keys %{$cfg->{pools}}) {
110 my $d = $cfg->{pools}->{$poolpath};
111 my @ra = PVE::AccessControl::roles($cfg, $user, "/pool$poolpath"); # pool roles
112 next if !scalar(@ra);
113 foreach my $vmid (keys %{$d->{vms}}) {
114 for my $role (@ra) {
115 $data->{poolroles}->{"/vms/$vmid"}->{$role} = 1;
2c3a6c0a
DM
116 }
117 }
4bc17477
DM
118 foreach my $storeid (keys %{$d->{storage}}) {
119 for my $role (@ra) {
120 $data->{poolroles}->{"/storage/$storeid"}->{$role} = 1;
121 }
122 }
123 }
124 }
125
126 my @ra = PVE::AccessControl::roles($cfg, $user, $path);
127
128 # apply roles inherited from pools
129 # Note: assume we do not want to propagate those privs
130 if ($data->{poolroles}->{$path}) {
131 if (!($ra[0] && $ra[0] eq 'NoAccess')) {
8ade28e6
DM
132 if ($data->{poolroles}->{$path}->{NoAccess}) {
133 @ra = ('NoAccess');
134 } else {
135 foreach my $role (keys %{$data->{poolroles}->{$path}}) {
136 push @ra, $role;
137 }
4bc17477 138 }
2c3a6c0a 139 }
4bc17477 140 }
2c3a6c0a 141
4bc17477
DM
142 $data->{roles}->{$path} = [ @ra ];
143
144 my $privs = {};
145 foreach my $role (@ra) {
146 if (my $privset = $cfg->{roles}->{$role}) {
147 foreach my $p (keys %$privset) {
148 $privs->{$p} = 1;
149 }
150 }
2c3a6c0a 151 }
4bc17477 152 $data->{privs}->{$path} = $privs;
2c3a6c0a 153
4bc17477 154 return $privs;
2c3a6c0a
DM
155};
156
4bc17477
DM
157sub roles {
158 my ($self, $user, $path) = @_;
159
160 if ($user eq 'root@pam') { # root can do anything
161 return ('Administrator');
162 }
163
164 $user = PVE::AccessControl::verify_username($user, 1);
165 return () if !$user;
166
167 my $cache = $self->{aclcache};
168 $cache->{$user} = {} if !$cache->{$user};
169
170 my $acl = $cache->{$user};
171
172 my $roles = $acl->{roles}->{$path};
173 return @$roles if $roles;
174
175 &$compile_acl_path($self, $user, $path);
176 $roles = $acl->{roles}->{$path} || [];
177 return @$roles;
178}
179
2c3a6c0a
DM
180sub permissions {
181 my ($self, $user, $path) = @_;
182
4bc17477
DM
183 if ($user eq 'root@pam') { # root can do anything
184 my $cfg = $self->{user_cfg};
185 return $cfg->{roles}->{'Administrator'};
186 }
187
2c3a6c0a
DM
188 $user = PVE::AccessControl::verify_username($user, 1);
189 return {} if !$user;
190
191 my $cache = $self->{aclcache};
4bc17477 192 $cache->{$user} = {} if !$cache->{$user};
2c3a6c0a
DM
193
194 my $acl = $cache->{$user};
195
4bc17477
DM
196 my $perm = $acl->{privs}->{$path};
197 return $perm if $perm;
2c3a6c0a 198
4bc17477 199 return &$compile_acl_path($self, $user, $path);
2c3a6c0a
DM
200}
201
202sub check {
37d45deb 203 my ($self, $user, $path, $privs, $noerr) = @_;
2c3a6c0a
DM
204
205 my $perm = $self->permissions($user, $path);
206
207 foreach my $priv (@$privs) {
37d45deb
DM
208 PVE::AccessControl::verify_privname($priv);
209 if (!$perm->{$priv}) {
210 return undef if $noerr;
211 raise_perm_exc("$path, $priv");
212 }
2c3a6c0a
DM
213 };
214
215 return 1;
216};
217
37d45deb
DM
218sub check_any {
219 my ($self, $user, $path, $privs, $noerr) = @_;
220
221 my $perm = $self->permissions($user, $path);
efce1d57 222
37d45deb
DM
223 my $found = 0;
224 foreach my $priv (@$privs) {
225 PVE::AccessControl::verify_privname($priv);
226 if ($perm->{$priv}) {
227 $found = 1;
228 last;
229 }
230 };
231
232 return 1 if $found;
233
234 return undef if $noerr;
235
236 raise_perm_exc("$path, " . join("|", @$privs));
237};
238
7070c1ae
DM
239sub check_user_enabled {
240 my ($self, $user, $noerr) = @_;
2c3a6c0a
DM
241
242 my $cfg = $self->{user_cfg};
7070c1ae 243 return PVE::AccessControl::check_user_enabled($cfg, $user, $noerr);
2c3a6c0a
DM
244}
245
37d45deb
DM
246sub check_user_exist {
247 my ($self, $user, $noerr) = @_;
248
249 my $cfg = $self->{user_cfg};
250 return PVE::AccessControl::check_user_exist($cfg, $user, $noerr);
251}
252
253sub is_group_member {
254 my ($self, $group, $user) = @_;
255
256 my $cfg = $self->{user_cfg};
257
258 return 0 if !$cfg->{groups}->{$group};
259
260 return defined($cfg->{groups}->{$group}->{users}->{$user});
261}
262
263sub filter_groups {
b9180ed2 264 my ($self, $user, $privs, $any) = @_;
37d45deb
DM
265
266 my $cfg = $self->{user_cfg};
267
268 my $groups = {};
269 foreach my $group (keys %{$cfg->{groups}}) {
b9180ed2 270 my $path = "/access/groups/$group";
37d45deb 271 if ($any) {
b9180ed2 272 if ($self->check_any($user, $path, $privs, 1)) {
37d45deb
DM
273 $groups->{$group} = $cfg->{groups}->{$group};
274 }
275 } else {
b9180ed2 276 if ($self->check($user, $path, $privs, 1)) {
37d45deb
DM
277 $groups->{$group} = $cfg->{groups}->{$group};
278 }
279 }
280 }
281
282 return $groups;
283}
284
285sub group_member_join {
286 my ($self, $grouplist) = @_;
287
288 my $users = {};
289
290 my $cfg = $self->{user_cfg};
291 foreach my $group (@$grouplist) {
292 my $data = $cfg->{groups}->{$group};
293 next if !$data;
294 foreach my $user (keys %{$data->{users}}) {
295 $users->{$user} = 1;
296 }
297 }
298
299 return $users;
300}
301
f8cc5a5f
DM
302sub exec_api2_perm_check {
303 my ($self, $check, $username, $param, $noerr) = @_;
304
305 # syslog("info", "CHECK " . join(', ', @$check));
306
307 my $ind = 0;
308 my $test = $check->[$ind++];
309 die "no permission test specified" if !$test;
310
311 if ($test eq 'and') {
312 while (my $subcheck = $check->[$ind++]) {
313 $self->exec_api2_perm_check($subcheck, $username, $param);
314 }
315 return 1;
316 } elsif ($test eq 'or') {
317 while (my $subcheck = $check->[$ind++]) {
318 return 1 if $self->exec_api2_perm_check($subcheck, $username, $param, 1);
319 }
320 return 0 if $noerr;
321 raise_perm_exc();
322 } elsif ($test eq 'perm') {
323 my ($t, $tmplpath, $privs, %options) = @$check;
324 my $any = $options{any};
325 die "missing parameters" if !($tmplpath && $privs);
326 my $path = PVE::Tools::template_replace($tmplpath, $param);
327 if ($any) {
328 return $self->check_any($username, $path, $privs, $noerr);
329 } else {
330 return $self->check($username, $path, $privs, $noerr);
331 }
332 } elsif ($test eq 'userid-group') {
333 my $userid = $param->{userid};
334 my ($t, $privs, %options) = @$check;
335 return if !$options{groups_param} && !$self->check_user_exist($userid, $noerr);
336 if (!$self->check_any($username, "/access", $privs, 1)) {
337 my $groups = $self->filter_groups($username, $privs, 1);
338 if ($options{groups_param}) {
339 my @group_param = PVE::Tools::split_list($param->{groups});
340 raise_perm_exc("/access, " . join("|", @$privs)) if !scalar(@group_param);
341 foreach my $pg (@group_param) {
342 raise_perm_exc("/access/groups/$pg, " . join("|", @$privs))
343 if !$groups->{$pg};
344 }
345 } else {
346 my $allowed_users = $self->group_member_join([keys %$groups]);
347 if (!$allowed_users->{$userid}) {
348 return 0 if $noerr;
349 raise_perm_exc();
350 }
351 }
352 }
353 return 1;
354 } elsif ($test eq 'userid-param') {
355 my $userid = $param->{userid};
356 return if !$self->check_user_exist($userid, $noerr);
357 my ($t, $subtest) = @$check;
358 die "missing parameters" if !$subtest;
359 if ($subtest eq 'self') {
360 return 1 if $username eq 'userid';
361 return 0 if $noerr;
362 raise_perm_exc();
363 } else {
364 die "unknown userid-param test";
365 }
366 } else {
367 die "unknown permission test";
368 }
369};
370
371sub check_api2_permissions {
372 my ($self, $perm, $username, $param) = @_;
373
374 return 1 if !$username && $perm->{user} eq 'world';
375
376 raise_perm_exc("user != null") if !$username;
377
378 return 1 if $username eq 'root@pam';
379
380 raise_perm_exc('user != root@pam') if !$perm;
381
382 return 1 if $perm->{user} && $perm->{user} eq 'all';
383
384 return $self->exec_api2_perm_check($perm->{check}, $username, $param)
385 if $perm->{check};
386
387 raise_perm_exc();
388}
389
2c3a6c0a
DM
390# initialize environment - must be called once at program startup
391sub init {
392 my ($class, $type, %params) = @_;
393
394 $class = ref($class) || $class;
395
396 die "already initialized" if $pve_env;
397
e42eedbc 398 die "unknown environment type" if !$type || $type !~ m/^(cli|pub|priv|ha)$/;
2c3a6c0a
DM
399
400 $SIG{CHLD} = $worker_reaper;
401
402 # environment types
403 # cli ... command started fron command line
404 # pub ... access from public server (apache)
405 # priv ... access from private server (pvedaemon)
e42eedbc 406 # ha ... access from HA resource manager agent (rgmanager)
2c3a6c0a
DM
407
408 my $self = {
409 user_cfg => {},
410 aclcache => {},
411 aclversion => undef,
412 type => $type,
413 };
414
415 bless $self, $class;
416
417 foreach my $p (keys %params) {
418 if ($p eq 'atfork') {
419 $self->{$p} = $params{$p};
420 } else {
421 die "unknown option '$p'";
422 }
423 }
424
425 $pve_env = $self;
426
427 my ($sysname, $nodename) = POSIX::uname();
428
429 $nodename =~ s/\..*$//; # strip domain part, if any
430
431 $self->{nodename} = $nodename;
432
433 return $self;
434};
435
436# get the singleton
437sub get {
438
439 die "not initialized" if !$pve_env;
440
441 return $pve_env;
442}
443
7b24102d
DM
444sub parse_params {
445 my ($self, $enable_upload) = @_;
446
447 if ($self->{request_rec}) {
448 my $cgi;
449 if ($enable_upload) {
450 $cgi = CGI->new($self->{request_rec});
451 } else {
452 # disable upload using empty upload_hook
453 $cgi = CGI->new($self->{request_rec}, sub {}, undef, 0);
454 }
455 $self->{cgi} = $cgi;
456 my $params = $cgi->Vars();
76c377c1 457 return PVE::Tools::decode_utf8_parameters($params);
7b24102d
DM
458 } elsif ($self->{params}) {
459 return $self->{params};
460 } else {
461 die "no parameters registered";
462 }
463}
464
465sub get_upload_info {
466 my ($self, $param) = @_;
467
468 my $cgi = $self->{cgi};
469 die "CGI not initialized" if !$cgi;
470
471 my $pd = $cgi->param($param);
472 die "unable to get cgi parameter info\n" if !$pd;
473 my $info = $cgi->uploadInfo($pd);
474 die "unable to get cgi upload info\n" if !$info;
475
476 my $res = { %$info };
477
478 my $tmpfilename = $cgi->tmpFileName($pd);
479 die "unable to get cgi upload file name\n" if !$tmpfilename;
480 $res->{tmpfilename} = $tmpfilename;
481
482 #my $hndl = $cgi->upload($param);
483 #die "unable to get cgi upload handle\n" if !$hndl;
484 #$res->{handle} = $hndl->handle;
485
486 return $res;
487}
488
2c3a6c0a
DM
489# init_request - must be called before each RPC request
490sub init_request {
491 my ($self, %params) = @_;
492
493 PVE::Cluster::cfs_update();
494
be6ea723 495 $self->{result_attributes} = {};
272fe9ff 496
2c3a6c0a
DM
497 my $userconfig; # we use this for regression tests
498 foreach my $p (keys %params) {
499 if ($p eq 'userconfig') {
500 $userconfig = $params{$p};
7b24102d
DM
501 } elsif ($p eq 'request_rec') {
502 # pass Apache2::RequestRec
503 $self->{request_rec} = $params{$p};
504 } elsif ($p eq 'params') {
505 $self->{params} = $params{$p};
2c3a6c0a
DM
506 } else {
507 die "unknown parameter '$p'";
508 }
509 }
510
511 eval {
512 $self->{aclcache} = {};
513 if ($userconfig) {
514 my $ucdata = PVE::Tools::file_get_contents($userconfig);
515 my $cfg = PVE::AccessControl::parse_user_config($userconfig, $ucdata);
516 $self->{user_cfg} = $cfg;
4bc17477 517 #print Dumper($cfg);
2c3a6c0a
DM
518 } else {
519 my $ucvers = PVE::Cluster::cfs_file_version('user.cfg');
520 if (!$self->{aclcache} || !defined($self->{aclversion}) ||
521 !defined($ucvers) || ($ucvers ne $self->{aclversion})) {
522 $self->{aclversion} = $ucvers;
523 my $cfg = PVE::Cluster::cfs_read_file('user.cfg');
524 $self->{user_cfg} = $cfg;
525 }
526 }
527 };
528 if (my $err = $@) {
529 $self->{user_cfg} = {};
530 die "Unable to load access control list: $err";
531 }
532}
533
534sub set_client_ip {
535 my ($self, $ip) = @_;
536
537 $self->{client_ip} = $ip;
538}
539
540sub get_client_ip {
541 my ($self) = @_;
542
543 return $self->{client_ip};
544}
545
be6ea723
DM
546sub set_result_attrib {
547 my ($self, $key, $value) = @_;
2c3a6c0a 548
be6ea723 549 $self->{result_attributes}->{$key} = $value;
2c3a6c0a
DM
550}
551
be6ea723
DM
552sub get_result_attrib {
553 my ($self, $key) = @_;
272fe9ff 554
be6ea723 555 return $self->{result_attributes}->{$key};
272fe9ff
DM
556}
557
2c3a6c0a
DM
558sub set_language {
559 my ($self, $lang) = @_;
560
561 # fixme: initialize I18N
562
563 $self->{language} = $lang;
564}
565
566sub get_language {
567 my ($self) = @_;
568
569 return $self->{language};
570}
571
572sub set_user {
573 my ($self, $user) = @_;
574
575 # fixme: get ACLs
576
577 $self->{user} = $user;
578}
579
580sub get_user {
581 my ($self) = @_;
582
583 die "user name not set\n" if !$self->{user};
584
585 return $self->{user};
586}
587
588# read/update list of active workers
589# we move all finished tasks to the archive index,
590# but keep aktive and most recent task in the active file.
5bf71a96
DM
591# $nocheck ... consider $new_upid still running (avoid that
592# we try to read the reult to early.
2c3a6c0a 593sub active_workers {
5bf71a96 594 my ($new_upid, $nocheck) = @_;
2c3a6c0a
DM
595
596 my $lkfn = "/var/log/pve/tasks/.active.lock";
597
598 my $timeout = 10;
599
600 my $code = sub {
601
602 my $tasklist = PVE::INotify::read_file('active');
603
604 my @ta;
605 my $tlist = [];
606 my $thash = {}; # only list task once
607
608 my $check_task = sub {
d33d0735 609 my ($task, $running) = @_;
2c3a6c0a 610
d33d0735 611 if ($running || PVE::ProcFSTools::check_process_running($task->{pid}, $task->{pstart})) {
2c3a6c0a
DM
612 push @$tlist, $task;
613 } else {
614 delete $task->{pid};
615 push @ta, $task;
616 }
617 delete $task->{pstart};
618 };
619
620 foreach my $task (@$tasklist) {
621 my $upid = $task->{upid};
622 next if $thash->{$upid};
623 $thash->{$upid} = $task;
624 &$check_task($task);
625 }
626
627 if ($new_upid && !(my $task = $thash->{$new_upid})) {
628 $task = PVE::Tools::upid_decode($new_upid);
629 $task->{upid} = $new_upid;
630 $thash->{$new_upid} = $task;
d33d0735 631 &$check_task($task, $nocheck);
2c3a6c0a
DM
632 }
633
634
635 @ta = sort { $b->{starttime} cmp $a->{starttime} } @ta;
636
637 my $save = defined($new_upid);
638
639 foreach my $task (@ta) {
640 next if $task->{endtime};
641 $task->{endtime} = time();
642 $task->{status} = PVE::Tools::upid_read_status($task->{upid});
643 $save = 1;
644 }
645
646 my $archive = '';
647 my @arlist = ();
648 foreach my $task (@ta) {
649 if (!$task->{saved}) {
650 $archive .= sprintf("$task->{upid} %08X $task->{status}\n", $task->{endtime});
651 $save = 1;
652 push @arlist, $task;
653 $task->{saved} = 1;
654 }
655 }
656
657 if ($archive) {
658 my $size = 0;
659 my $filename = "/var/log/pve/tasks/index";
660 eval {
661 my $fh = IO::File->new($filename, '>>', 0644) ||
662 die "unable to open file '$filename' - $!\n";
663 PVE::Tools::safe_print($filename, $fh, $archive);
664 $size = -s $fh;
665 close($fh) ||
666 die "unable to close file '$filename' - $!\n";
667 };
668 my $err = $@;
669 if ($err) {
670 syslog('err', $err);
671 foreach my $task (@arlist) { # mark as not saved
672 $task->{saved} = 0;
673 }
674 }
675 my $maxsize = 50000; # about 1000 entries
676 if ($size > $maxsize) {
677 rename($filename, "$filename.1");
678 }
679 }
680
681 # we try to reduce the amount of data
682 # list all running tasks and task and a few others
683 # try to limit to 25 tasks
684 my $ctime = time();
685 my $max = 25 - scalar(@$tlist);
686 foreach my $task (@ta) {
687 last if $max <= 0;
688 push @$tlist, $task;
689 $max--;
690 }
691
692 PVE::INotify::write_file('active', $tlist) if $save;
693
694 return $tlist;
695 };
696
697 my $res = PVE::Tools::lock_file($lkfn, $timeout, $code);
698 die $@ if $@;
699
700 return $res;
701}
702
b9e47e57
DM
703my $kill_process_group = sub {
704 my ($pid, $pstart) = @_;
705
706 # send kill to process group (negative pid)
707 my $kpid = -$pid;
708
709 # always send signal to all pgrp members
710 kill(15, $kpid); # send TERM signal
711
712 # give max 5 seconds to shut down
713 for (my $i = 0; $i < 5; $i++) {
714 return if !PVE::ProcFSTools::check_process_running($pid, $pstart);
715 sleep (1);
716 }
717
718 # to be sure
719 kill(9, $kpid);
720};
721
722sub check_worker {
723 my ($upid, $killit) = @_;
724
725 my $task = PVE::Tools::upid_decode($upid);
726
727 my $running = PVE::ProcFSTools::check_process_running($task->{pid}, $task->{pstart});
728
729 return 0 if !$running;
730
731 if ($killit) {
732 &$kill_process_group($task->{pid});
733 return 0;
734 }
735
736 return 1;
737}
738
2c3a6c0a
DM
739# start long running workers
740# STDIN is redirected to /dev/null
741# STDOUT,STDERR are redirected to the filename returned by upid_decode
742# NOTE: we simulate running in foreground if ($self->{type} eq 'cli')
743sub fork_worker {
744 my ($self, $dtype, $id, $user, $function) = @_;
745
746 $dtype = 'unknown' if !defined ($dtype);
747 $id = '' if !defined ($id);
748
749 $user = 'root@pve' if !defined ($user);
750
751 my $sync = $self->{type} eq 'cli' ? 1 : 0;
752
753 local $SIG{INT} =
754 local $SIG{QUIT} =
755 local $SIG{PIPE} =
756 local $SIG{TERM} = 'IGNORE';
757
758 my $starttime = time ();
759
760 my @psync = POSIX::pipe();
761 my @csync = POSIX::pipe();
762
763 my $node = $self->{nodename};
764
765 my $cpid = fork();
766 die "unable to fork worker - $!" if !defined($cpid);
767
768 my $workerpuid = $cpid ? $cpid : $$;
769
770 my $pstart = PVE::ProcFSTools::read_proc_starttime($workerpuid) ||
771 die "unable to read process start time";
772
773 my $upid = PVE::Tools::upid_encode ({
774 node => $node, pid => $workerpuid, pstart => $pstart,
775 starttime => $starttime, type => $dtype, id => $id, user => $user });
776
777 my $outfh;
778
779 if (!$cpid) { # child
780
781 $0 = "task $upid";
782
783 $SIG{INT} = $SIG{QUIT} = $SIG{TERM} = sub { die "received interrupt\n"; };
784
785 $SIG{CHLD} = $SIG{PIPE} = 'DEFAULT';
786
787 # set sess/process group - we want to be able to kill the
788 # whole process group
789 POSIX::setsid();
790
791 POSIX::close ($psync[0]);
792 POSIX::close ($csync[1]);
793
794 $outfh = $sync ? $psync[1] : undef;
795
796 eval {
797 PVE::INotify::inotify_close();
798
799 if (my $atfork = $self->{atfork}) {
800 &$atfork();
801 }
802
803 # same algorythm as used inside SA
804 # STDIN = /dev/null
805 my $fd = fileno (STDIN);
2c3a6c0a 806
5a941ebe
DM
807 if (!$sync) {
808 close STDIN;
809 POSIX::close(0) if $fd != 0;
810
811 die "unable to redirect STDIN - $!"
812 if !open(STDIN, "</dev/null");
813
814 $outfh = PVE::Tools::upid_open($upid);
815 }
2c3a6c0a 816
2c3a6c0a
DM
817
818 # redirect STDOUT
819 $fd = fileno(STDOUT);
820 close STDOUT;
821 POSIX::close (1) if $fd != 1;
822
823 die "unable to redirect STDOUT - $!"
824 if !open(STDOUT, ">&", $outfh);
825
826 STDOUT->autoflush (1);
827
828 # redirect STDERR to STDOUT
829 $fd = fileno (STDERR);
830 close STDERR;
831 POSIX::close(2) if $fd != 2;
832
833 die "unable to redirect STDERR - $!"
834 if !open(STDERR, ">&1");
835
836 STDERR->autoflush(1);
837 };
838 if (my $err = $@) {
839 my $msg = "ERROR: $err";
840 POSIX::write($psync[1], $msg, length ($msg));
841 POSIX::close($psync[1]);
842 POSIX::_exit(1);
b9e47e57 843 kill(-9, $$);
2c3a6c0a
DM
844 }
845
f6f2d51f 846 # sync with parent (signal that we are ready)
2c3a6c0a
DM
847 if ($sync) {
848 print "$upid\n";
849 } else {
850 POSIX::write($psync[1], $upid, length ($upid));
851 POSIX::close($psync[1]);
852 }
853
854 my $readbuf = '';
855 # sync with parent (wait until parent is ready)
856 POSIX::read($csync[0], $readbuf, 4096);
857 die "parent setup error\n" if $readbuf ne 'OK';
858
e42eedbc
DM
859 if ($self->{type} eq 'ha') {
860 print "task started by HA resource agent\n";
861 }
2c3a6c0a
DM
862 eval { &$function($upid); };
863 my $err = $@;
864 if ($err) {
865 chomp $err;
866 $err =~ s/\n/ /mg;
867 syslog('err', $err);
868 print STDERR "TASK ERROR: $err\n";
869 POSIX::_exit(-1);
870 } else {
871 print STDERR "TASK OK\n";
b9e47e57 872 POSIX::_exit(0);
2c3a6c0a 873 }
b9e47e57 874 kill(-9, $$);
2c3a6c0a
DM
875 }
876
877 # parent
878
879 POSIX::close ($psync[1]);
880 POSIX::close ($csync[0]);
881
882 my $readbuf = '';
883 # sync with child (wait until child starts)
884 POSIX::read($psync[0], $readbuf, 4096);
885
886 if (!$sync) {
887 POSIX::close($psync[0]);
888 &$register_worker($cpid, $user, $upid);
889 } else {
890 chomp $readbuf;
891 }
892
893 eval {
894 die "got no worker upid - start worker failed\n" if !$readbuf;
895
896 if ($readbuf =~ m/^ERROR:\s*(.+)$/m) {
897 die "starting worker failed: $1\n";
898 }
899
900 if ($readbuf ne $upid) {
901 die "got strange worker upid ('$readbuf' != '$upid') - start worker failed\n";
902 }
903
904 if ($sync) {
905 $outfh = PVE::Tools::upid_open($upid);
906 }
907 };
908 my $err = $@;
909
910 if (!$err) {
911 my $msg = 'OK';
912 POSIX::write($csync[1], $msg, length ($msg));
913 POSIX::close($csync[1]);
914
915 } else {
916 POSIX::close($csync[1]);
b9e47e57 917 kill(-9, $cpid); # make sure it gets killed
2c3a6c0a
DM
918 die $err;
919 }
920
921 PVE::Cluster::log_msg('info', $user, "starting task $upid");
922
5bf71a96 923 my $tlist = active_workers($upid, $sync);
2c3a6c0a
DM
924 PVE::Cluster::broadcast_tasklist($tlist);
925
926 my $res = 0;
927
928 if ($sync) {
929 my $count;
930 my $outbuf = '';
8d6e045f 931 my $int_count = 0;
2c3a6c0a 932 eval {
8d6e045f 933 local $SIG{INT} = local $SIG{QUIT} = local $SIG{TERM} = sub {
527b2e7a
DM
934 # always send signal to all pgrp members
935 my $kpid = -$cpid;
8d6e045f 936 if ($int_count < 3) {
527b2e7a 937 kill(15, $kpid); # send TERM signal
8d6e045f 938 } else {
527b2e7a 939 kill(9, $kpid); # send KILL signal
8d6e045f
DM
940 }
941 $int_count++;
942 };
2c3a6c0a 943 local $SIG{PIPE} = sub { die "broken pipe\n"; };
b28410fc
DM
944
945 my $select = new IO::Select;
946 my $fh = IO::Handle->new_from_fd($psync[0], 'r');
947 $select->add($fh);
948
949 while ($select->count) {
950 my @handles = $select->can_read(1);
951 if (scalar(@handles)) {
952 my $count = sysread ($handles[0], $readbuf, 4096);
953 if (!defined ($count)) {
954 my $err = $!;
955 die "sync pipe read error: $err\n";
2c3a6c0a 956 }
b28410fc
DM
957 last if $count == 0; # eof
958
959 $outbuf .= $readbuf;
960 while ($outbuf =~ s/^(([^\010\r\n]*)(\r|\n|(\010)+|\r\n))//s) {
961 my $line = $1;
962 my $data = $2;
963 if ($data =~ m/^TASK OK$/) {
964 # skip
965 } elsif ($data =~ m/^TASK ERROR: (.+)$/) {
966 print STDERR "$1\n";
967 } else {
968 print $line;
969 }
970 if ($outfh) {
971 print $outfh $line;
972 $outfh->flush();
973 }
2c3a6c0a 974 }
b28410fc
DM
975 } else {
976 # some commands daemonize without closing stdout
977 last if !PVE::ProcFSTools::check_process_running($cpid);
2c3a6c0a
DM
978 }
979 }
980 };
981 my $err = $@;
982
983 POSIX::close($psync[0]);
984
985 if ($outbuf) { # just to be sure
986 print $outbuf;
987 if ($outfh) {
988 print $outfh $outbuf;
989 }
990 }
991
992 if ($err) {
993 $err =~ s/\n/ /mg;
994 print STDERR "$err\n";
995 if ($outfh) {
996 print $outfh "TASK ERROR: $err\n";
997 }
2c3a6c0a
DM
998 }
999
b9e47e57
DM
1000 &$kill_process_group($cpid, $pstart); # make sure it gets killed
1001
2c3a6c0a
DM
1002 close($outfh);
1003
b9e47e57 1004 waitpid($cpid, 0);
2c3a6c0a
DM
1005 $res = $?;
1006 &$log_task_result($upid, $user, $res);
1007 }
1008
1009 return wantarray ? ($upid, $res) : $upid;
1010}
1011
10121;