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