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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 DM |
9 | use Fcntl qw(:flock); |
10 | use PVE::SafeSyslog; | |
11 | use PVE::Tools; | |
12 | use PVE::INotify; | |
13 | use PVE::Cluster; | |
14 | use PVE::ProcFSTools; | |
15 | use PVE::AccessControl; | |
7b24102d | 16 | use CGI; |
2c3a6c0a DM |
17 | |
18 | # we use this singleton class to pass RPC related environment values | |
19 | ||
20 | my $pve_env; | |
21 | ||
22 | # save $SIG{CHLD} handler implementation. | |
23 | # simply set $SIG{CHLD} = $worker_reaper; | |
24 | # and register forked processes with &$register_worker(pid) | |
25 | # Note: using $SIG{CHLD} = 'IGNORE' or $SIG{CHLD} = sub { wait (); } or ... | |
26 | # has serious side effects, because perls built in system() and open() | |
27 | # functions can't get the correct exit status of a child. So we cant use | |
28 | # that (also see perlipc) | |
29 | ||
30 | my $WORKER_PIDS; | |
31 | ||
32 | my $log_task_result = sub { | |
33 | my ($upid, $user, $status) = @_; | |
34 | ||
35 | my $msg = 'successful'; | |
36 | my $pri = 'info'; | |
37 | if ($status != 0) { | |
38 | my $ec = $status >> 8; | |
39 | my $ic = $status & 255; | |
40 | $msg = $ec ? "failed ($ec)" : "interrupted ($ic)"; | |
41 | $pri = 'err'; | |
42 | } | |
43 | my $tlist = active_workers($upid); | |
44 | PVE::Cluster::broadcast_tasklist($tlist); | |
45 | my $task; | |
46 | foreach my $t (@$tlist) { | |
47 | if ($t->{upid} eq $upid) { | |
48 | $task = $t; | |
49 | last; | |
50 | } | |
51 | } | |
52 | if ($task && $task->{status}) { | |
53 | $msg = $task->{status}; | |
54 | } | |
55 | PVE::Cluster::log_msg($pri, $user, "end task $upid $msg"); | |
56 | }; | |
57 | ||
58 | my $worker_reaper = sub { | |
59 | local $!; local $?; | |
60 | foreach my $pid (keys %$WORKER_PIDS) { | |
61 | my $waitpid = waitpid ($pid, WNOHANG); | |
62 | if (defined($waitpid) && ($waitpid == $pid)) { | |
63 | my $info = $WORKER_PIDS->{$pid}; | |
64 | if ($info && $info->{upid} && $info->{user}) { | |
65 | &$log_task_result($info->{upid}, $info->{user}, $?); | |
66 | } | |
67 | delete ($WORKER_PIDS->{$pid}); | |
68 | } | |
69 | } | |
70 | }; | |
71 | ||
72 | my $register_worker = sub { | |
73 | my ($pid, $user, $upid) = @_; | |
74 | ||
75 | return if !$pid; | |
76 | ||
77 | # do not register if already finished | |
78 | my $waitpid = waitpid ($pid, WNOHANG); | |
79 | if (defined($waitpid) && ($waitpid == $pid)) { | |
80 | delete ($WORKER_PIDS->{$pid}); | |
81 | return; | |
82 | } | |
83 | ||
84 | $WORKER_PIDS->{$pid} = { | |
85 | user => $user, | |
86 | upid => $upid, | |
87 | }; | |
88 | }; | |
89 | ||
90 | # ACL cache | |
91 | ||
92 | my $compile_acl = sub { | |
93 | my ($self, $user) = @_; | |
94 | ||
95 | my $res = {}; | |
96 | my $cfg = $self->{user_cfg}; | |
97 | ||
98 | return undef if !$cfg->{roles}; | |
99 | ||
100 | if ($user eq 'root@pam') { # root can do anything | |
101 | return {'/' => $cfg->{roles}->{'Administrator'}}; | |
102 | } | |
103 | ||
104 | foreach my $path (sort keys %{$cfg->{acl}}) { | |
105 | my @ra = PVE::AccessControl::roles($cfg, $user, $path); | |
106 | ||
107 | my $privs = {}; | |
108 | foreach my $role (@ra) { | |
109 | if (my $privset = $cfg->{roles}->{$role}) { | |
110 | foreach my $p (keys %$privset) { | |
111 | $privs->{$p} = 1; | |
112 | } | |
113 | } | |
114 | } | |
115 | ||
116 | $res->{$path} = $privs; | |
117 | } | |
118 | ||
119 | return $res; | |
120 | }; | |
121 | ||
122 | sub permissions { | |
123 | my ($self, $user, $path) = @_; | |
124 | ||
125 | $user = PVE::AccessControl::verify_username($user, 1); | |
126 | return {} if !$user; | |
127 | ||
128 | my $cache = $self->{aclcache}; | |
129 | ||
130 | my $acl = $cache->{$user}; | |
131 | ||
132 | if (!$acl) { | |
133 | if (!($acl = &$compile_acl($self, $user))) { | |
134 | return {}; | |
135 | } | |
136 | $cache->{$user} = $acl; | |
137 | } | |
138 | ||
139 | my $perm; | |
140 | ||
141 | if (!($perm = $acl->{$path})) { | |
142 | $perm = {}; | |
143 | foreach my $p (sort keys %$acl) { | |
144 | my $final = ($path eq $p); | |
145 | ||
146 | next if !(($p eq '/') || $final || ($path =~ m|^$p/|)); | |
147 | ||
148 | $perm = $acl->{$p}; | |
149 | } | |
150 | $acl->{$path} = $perm; | |
151 | } | |
152 | ||
153 | return $perm; | |
154 | } | |
155 | ||
156 | sub check { | |
157 | my ($self, $user, $path, $privs) = @_; | |
158 | ||
159 | my $perm = $self->permissions($user, $path); | |
160 | ||
161 | foreach my $priv (@$privs) { | |
162 | return undef if !$perm->{$priv}; | |
163 | }; | |
164 | ||
165 | return 1; | |
166 | }; | |
167 | ||
168 | sub user_enabled { | |
169 | my ($self, $user) = @_; | |
170 | ||
171 | my $cfg = $self->{user_cfg}; | |
172 | return PVE::AccessControl::user_enabled($cfg, $user); | |
173 | } | |
174 | ||
175 | # initialize environment - must be called once at program startup | |
176 | sub init { | |
177 | my ($class, $type, %params) = @_; | |
178 | ||
179 | $class = ref($class) || $class; | |
180 | ||
181 | die "already initialized" if $pve_env; | |
182 | ||
183 | die "unknown environment type" if !$type || $type !~ m/^(cli|pub|priv)$/; | |
184 | ||
185 | $SIG{CHLD} = $worker_reaper; | |
186 | ||
187 | # environment types | |
188 | # cli ... command started fron command line | |
189 | # pub ... access from public server (apache) | |
190 | # priv ... access from private server (pvedaemon) | |
191 | ||
192 | my $self = { | |
193 | user_cfg => {}, | |
194 | aclcache => {}, | |
195 | aclversion => undef, | |
196 | type => $type, | |
197 | }; | |
198 | ||
199 | bless $self, $class; | |
200 | ||
201 | foreach my $p (keys %params) { | |
202 | if ($p eq 'atfork') { | |
203 | $self->{$p} = $params{$p}; | |
204 | } else { | |
205 | die "unknown option '$p'"; | |
206 | } | |
207 | } | |
208 | ||
209 | $pve_env = $self; | |
210 | ||
211 | my ($sysname, $nodename) = POSIX::uname(); | |
212 | ||
213 | $nodename =~ s/\..*$//; # strip domain part, if any | |
214 | ||
215 | $self->{nodename} = $nodename; | |
216 | ||
217 | return $self; | |
218 | }; | |
219 | ||
220 | # get the singleton | |
221 | sub get { | |
222 | ||
223 | die "not initialized" if !$pve_env; | |
224 | ||
225 | return $pve_env; | |
226 | } | |
227 | ||
7b24102d DM |
228 | sub parse_params { |
229 | my ($self, $enable_upload) = @_; | |
230 | ||
231 | if ($self->{request_rec}) { | |
232 | my $cgi; | |
233 | if ($enable_upload) { | |
234 | $cgi = CGI->new($self->{request_rec}); | |
235 | } else { | |
236 | # disable upload using empty upload_hook | |
237 | $cgi = CGI->new($self->{request_rec}, sub {}, undef, 0); | |
238 | } | |
239 | $self->{cgi} = $cgi; | |
240 | my $params = $cgi->Vars(); | |
241 | return $params; | |
242 | } elsif ($self->{params}) { | |
243 | return $self->{params}; | |
244 | } else { | |
245 | die "no parameters registered"; | |
246 | } | |
247 | } | |
248 | ||
249 | sub get_upload_info { | |
250 | my ($self, $param) = @_; | |
251 | ||
252 | my $cgi = $self->{cgi}; | |
253 | die "CGI not initialized" if !$cgi; | |
254 | ||
255 | my $pd = $cgi->param($param); | |
256 | die "unable to get cgi parameter info\n" if !$pd; | |
257 | my $info = $cgi->uploadInfo($pd); | |
258 | die "unable to get cgi upload info\n" if !$info; | |
259 | ||
260 | my $res = { %$info }; | |
261 | ||
262 | my $tmpfilename = $cgi->tmpFileName($pd); | |
263 | die "unable to get cgi upload file name\n" if !$tmpfilename; | |
264 | $res->{tmpfilename} = $tmpfilename; | |
265 | ||
266 | #my $hndl = $cgi->upload($param); | |
267 | #die "unable to get cgi upload handle\n" if !$hndl; | |
268 | #$res->{handle} = $hndl->handle; | |
269 | ||
270 | return $res; | |
271 | } | |
272 | ||
2c3a6c0a DM |
273 | # init_request - must be called before each RPC request |
274 | sub init_request { | |
275 | my ($self, %params) = @_; | |
276 | ||
277 | PVE::Cluster::cfs_update(); | |
278 | ||
279 | my $userconfig; # we use this for regression tests | |
280 | foreach my $p (keys %params) { | |
281 | if ($p eq 'userconfig') { | |
282 | $userconfig = $params{$p}; | |
7b24102d DM |
283 | } elsif ($p eq 'request_rec') { |
284 | # pass Apache2::RequestRec | |
285 | $self->{request_rec} = $params{$p}; | |
286 | } elsif ($p eq 'params') { | |
287 | $self->{params} = $params{$p}; | |
2c3a6c0a DM |
288 | } else { |
289 | die "unknown parameter '$p'"; | |
290 | } | |
291 | } | |
292 | ||
293 | eval { | |
294 | $self->{aclcache} = {}; | |
295 | if ($userconfig) { | |
296 | my $ucdata = PVE::Tools::file_get_contents($userconfig); | |
297 | my $cfg = PVE::AccessControl::parse_user_config($userconfig, $ucdata); | |
298 | $self->{user_cfg} = $cfg; | |
299 | } else { | |
300 | my $ucvers = PVE::Cluster::cfs_file_version('user.cfg'); | |
301 | if (!$self->{aclcache} || !defined($self->{aclversion}) || | |
302 | !defined($ucvers) || ($ucvers ne $self->{aclversion})) { | |
303 | $self->{aclversion} = $ucvers; | |
304 | my $cfg = PVE::Cluster::cfs_read_file('user.cfg'); | |
305 | $self->{user_cfg} = $cfg; | |
306 | } | |
307 | } | |
308 | }; | |
309 | if (my $err = $@) { | |
310 | $self->{user_cfg} = {}; | |
311 | die "Unable to load access control list: $err"; | |
312 | } | |
313 | } | |
314 | ||
315 | sub set_client_ip { | |
316 | my ($self, $ip) = @_; | |
317 | ||
318 | $self->{client_ip} = $ip; | |
319 | } | |
320 | ||
321 | sub get_client_ip { | |
322 | my ($self) = @_; | |
323 | ||
324 | return $self->{client_ip}; | |
325 | } | |
326 | ||
327 | sub set_result_count { | |
328 | my ($self, $count) = @_; | |
329 | ||
330 | $self->{result_count} = $count; | |
331 | } | |
332 | ||
333 | sub get_result_count { | |
334 | my ($self) = @_; | |
335 | ||
336 | return $self->{result_count}; | |
337 | } | |
338 | ||
339 | sub set_language { | |
340 | my ($self, $lang) = @_; | |
341 | ||
342 | # fixme: initialize I18N | |
343 | ||
344 | $self->{language} = $lang; | |
345 | } | |
346 | ||
347 | sub get_language { | |
348 | my ($self) = @_; | |
349 | ||
350 | return $self->{language}; | |
351 | } | |
352 | ||
353 | sub set_user { | |
354 | my ($self, $user) = @_; | |
355 | ||
356 | # fixme: get ACLs | |
357 | ||
358 | $self->{user} = $user; | |
359 | } | |
360 | ||
361 | sub get_user { | |
362 | my ($self) = @_; | |
363 | ||
364 | die "user name not set\n" if !$self->{user}; | |
365 | ||
366 | return $self->{user}; | |
367 | } | |
368 | ||
369 | # read/update list of active workers | |
370 | # we move all finished tasks to the archive index, | |
371 | # but keep aktive and most recent task in the active file. | |
5bf71a96 DM |
372 | # $nocheck ... consider $new_upid still running (avoid that |
373 | # we try to read the reult to early. | |
2c3a6c0a | 374 | sub active_workers { |
5bf71a96 | 375 | my ($new_upid, $nocheck) = @_; |
2c3a6c0a DM |
376 | |
377 | my $lkfn = "/var/log/pve/tasks/.active.lock"; | |
378 | ||
379 | my $timeout = 10; | |
380 | ||
381 | my $code = sub { | |
382 | ||
383 | my $tasklist = PVE::INotify::read_file('active'); | |
384 | ||
385 | my @ta; | |
386 | my $tlist = []; | |
387 | my $thash = {}; # only list task once | |
388 | ||
389 | my $check_task = sub { | |
d33d0735 | 390 | my ($task, $running) = @_; |
2c3a6c0a | 391 | |
d33d0735 | 392 | if ($running || PVE::ProcFSTools::check_process_running($task->{pid}, $task->{pstart})) { |
2c3a6c0a DM |
393 | push @$tlist, $task; |
394 | } else { | |
395 | delete $task->{pid}; | |
396 | push @ta, $task; | |
397 | } | |
398 | delete $task->{pstart}; | |
399 | }; | |
400 | ||
401 | foreach my $task (@$tasklist) { | |
402 | my $upid = $task->{upid}; | |
403 | next if $thash->{$upid}; | |
404 | $thash->{$upid} = $task; | |
405 | &$check_task($task); | |
406 | } | |
407 | ||
408 | if ($new_upid && !(my $task = $thash->{$new_upid})) { | |
409 | $task = PVE::Tools::upid_decode($new_upid); | |
410 | $task->{upid} = $new_upid; | |
411 | $thash->{$new_upid} = $task; | |
d33d0735 | 412 | &$check_task($task, $nocheck); |
2c3a6c0a DM |
413 | } |
414 | ||
415 | ||
416 | @ta = sort { $b->{starttime} cmp $a->{starttime} } @ta; | |
417 | ||
418 | my $save = defined($new_upid); | |
419 | ||
420 | foreach my $task (@ta) { | |
421 | next if $task->{endtime}; | |
422 | $task->{endtime} = time(); | |
423 | $task->{status} = PVE::Tools::upid_read_status($task->{upid}); | |
424 | $save = 1; | |
425 | } | |
426 | ||
427 | my $archive = ''; | |
428 | my @arlist = (); | |
429 | foreach my $task (@ta) { | |
430 | if (!$task->{saved}) { | |
431 | $archive .= sprintf("$task->{upid} %08X $task->{status}\n", $task->{endtime}); | |
432 | $save = 1; | |
433 | push @arlist, $task; | |
434 | $task->{saved} = 1; | |
435 | } | |
436 | } | |
437 | ||
438 | if ($archive) { | |
439 | my $size = 0; | |
440 | my $filename = "/var/log/pve/tasks/index"; | |
441 | eval { | |
442 | my $fh = IO::File->new($filename, '>>', 0644) || | |
443 | die "unable to open file '$filename' - $!\n"; | |
444 | PVE::Tools::safe_print($filename, $fh, $archive); | |
445 | $size = -s $fh; | |
446 | close($fh) || | |
447 | die "unable to close file '$filename' - $!\n"; | |
448 | }; | |
449 | my $err = $@; | |
450 | if ($err) { | |
451 | syslog('err', $err); | |
452 | foreach my $task (@arlist) { # mark as not saved | |
453 | $task->{saved} = 0; | |
454 | } | |
455 | } | |
456 | my $maxsize = 50000; # about 1000 entries | |
457 | if ($size > $maxsize) { | |
458 | rename($filename, "$filename.1"); | |
459 | } | |
460 | } | |
461 | ||
462 | # we try to reduce the amount of data | |
463 | # list all running tasks and task and a few others | |
464 | # try to limit to 25 tasks | |
465 | my $ctime = time(); | |
466 | my $max = 25 - scalar(@$tlist); | |
467 | foreach my $task (@ta) { | |
468 | last if $max <= 0; | |
469 | push @$tlist, $task; | |
470 | $max--; | |
471 | } | |
472 | ||
473 | PVE::INotify::write_file('active', $tlist) if $save; | |
474 | ||
475 | return $tlist; | |
476 | }; | |
477 | ||
478 | my $res = PVE::Tools::lock_file($lkfn, $timeout, $code); | |
479 | die $@ if $@; | |
480 | ||
481 | return $res; | |
482 | } | |
483 | ||
b9e47e57 DM |
484 | my $kill_process_group = sub { |
485 | my ($pid, $pstart) = @_; | |
486 | ||
487 | # send kill to process group (negative pid) | |
488 | my $kpid = -$pid; | |
489 | ||
490 | # always send signal to all pgrp members | |
491 | kill(15, $kpid); # send TERM signal | |
492 | ||
493 | # give max 5 seconds to shut down | |
494 | for (my $i = 0; $i < 5; $i++) { | |
495 | return if !PVE::ProcFSTools::check_process_running($pid, $pstart); | |
496 | sleep (1); | |
497 | } | |
498 | ||
499 | # to be sure | |
500 | kill(9, $kpid); | |
501 | }; | |
502 | ||
503 | sub check_worker { | |
504 | my ($upid, $killit) = @_; | |
505 | ||
506 | my $task = PVE::Tools::upid_decode($upid); | |
507 | ||
508 | my $running = PVE::ProcFSTools::check_process_running($task->{pid}, $task->{pstart}); | |
509 | ||
510 | return 0 if !$running; | |
511 | ||
512 | if ($killit) { | |
513 | &$kill_process_group($task->{pid}); | |
514 | return 0; | |
515 | } | |
516 | ||
517 | return 1; | |
518 | } | |
519 | ||
2c3a6c0a DM |
520 | # start long running workers |
521 | # STDIN is redirected to /dev/null | |
522 | # STDOUT,STDERR are redirected to the filename returned by upid_decode | |
523 | # NOTE: we simulate running in foreground if ($self->{type} eq 'cli') | |
524 | sub fork_worker { | |
525 | my ($self, $dtype, $id, $user, $function) = @_; | |
526 | ||
527 | $dtype = 'unknown' if !defined ($dtype); | |
528 | $id = '' if !defined ($id); | |
529 | ||
530 | $user = 'root@pve' if !defined ($user); | |
531 | ||
532 | my $sync = $self->{type} eq 'cli' ? 1 : 0; | |
533 | ||
534 | local $SIG{INT} = | |
535 | local $SIG{QUIT} = | |
536 | local $SIG{PIPE} = | |
537 | local $SIG{TERM} = 'IGNORE'; | |
538 | ||
539 | my $starttime = time (); | |
540 | ||
541 | my @psync = POSIX::pipe(); | |
542 | my @csync = POSIX::pipe(); | |
543 | ||
544 | my $node = $self->{nodename}; | |
545 | ||
546 | my $cpid = fork(); | |
547 | die "unable to fork worker - $!" if !defined($cpid); | |
548 | ||
549 | my $workerpuid = $cpid ? $cpid : $$; | |
550 | ||
551 | my $pstart = PVE::ProcFSTools::read_proc_starttime($workerpuid) || | |
552 | die "unable to read process start time"; | |
553 | ||
554 | my $upid = PVE::Tools::upid_encode ({ | |
555 | node => $node, pid => $workerpuid, pstart => $pstart, | |
556 | starttime => $starttime, type => $dtype, id => $id, user => $user }); | |
557 | ||
558 | my $outfh; | |
559 | ||
560 | if (!$cpid) { # child | |
561 | ||
562 | $0 = "task $upid"; | |
563 | ||
564 | $SIG{INT} = $SIG{QUIT} = $SIG{TERM} = sub { die "received interrupt\n"; }; | |
565 | ||
566 | $SIG{CHLD} = $SIG{PIPE} = 'DEFAULT'; | |
567 | ||
568 | # set sess/process group - we want to be able to kill the | |
569 | # whole process group | |
570 | POSIX::setsid(); | |
571 | ||
572 | POSIX::close ($psync[0]); | |
573 | POSIX::close ($csync[1]); | |
574 | ||
575 | $outfh = $sync ? $psync[1] : undef; | |
576 | ||
577 | eval { | |
578 | PVE::INotify::inotify_close(); | |
579 | ||
580 | if (my $atfork = $self->{atfork}) { | |
581 | &$atfork(); | |
582 | } | |
583 | ||
584 | # same algorythm as used inside SA | |
585 | # STDIN = /dev/null | |
586 | my $fd = fileno (STDIN); | |
2c3a6c0a | 587 | |
5a941ebe DM |
588 | if (!$sync) { |
589 | close STDIN; | |
590 | POSIX::close(0) if $fd != 0; | |
591 | ||
592 | die "unable to redirect STDIN - $!" | |
593 | if !open(STDIN, "</dev/null"); | |
594 | ||
595 | $outfh = PVE::Tools::upid_open($upid); | |
596 | } | |
2c3a6c0a | 597 | |
2c3a6c0a DM |
598 | |
599 | # redirect STDOUT | |
600 | $fd = fileno(STDOUT); | |
601 | close STDOUT; | |
602 | POSIX::close (1) if $fd != 1; | |
603 | ||
604 | die "unable to redirect STDOUT - $!" | |
605 | if !open(STDOUT, ">&", $outfh); | |
606 | ||
607 | STDOUT->autoflush (1); | |
608 | ||
609 | # redirect STDERR to STDOUT | |
610 | $fd = fileno (STDERR); | |
611 | close STDERR; | |
612 | POSIX::close(2) if $fd != 2; | |
613 | ||
614 | die "unable to redirect STDERR - $!" | |
615 | if !open(STDERR, ">&1"); | |
616 | ||
617 | STDERR->autoflush(1); | |
618 | }; | |
619 | if (my $err = $@) { | |
620 | my $msg = "ERROR: $err"; | |
621 | POSIX::write($psync[1], $msg, length ($msg)); | |
622 | POSIX::close($psync[1]); | |
623 | POSIX::_exit(1); | |
b9e47e57 | 624 | kill(-9, $$); |
2c3a6c0a DM |
625 | } |
626 | ||
f6f2d51f | 627 | # sync with parent (signal that we are ready) |
2c3a6c0a DM |
628 | if ($sync) { |
629 | print "$upid\n"; | |
630 | } else { | |
631 | POSIX::write($psync[1], $upid, length ($upid)); | |
632 | POSIX::close($psync[1]); | |
633 | } | |
634 | ||
635 | my $readbuf = ''; | |
636 | # sync with parent (wait until parent is ready) | |
637 | POSIX::read($csync[0], $readbuf, 4096); | |
638 | die "parent setup error\n" if $readbuf ne 'OK'; | |
639 | ||
640 | eval { &$function($upid); }; | |
641 | my $err = $@; | |
642 | if ($err) { | |
643 | chomp $err; | |
644 | $err =~ s/\n/ /mg; | |
645 | syslog('err', $err); | |
646 | print STDERR "TASK ERROR: $err\n"; | |
647 | POSIX::_exit(-1); | |
648 | } else { | |
649 | print STDERR "TASK OK\n"; | |
b9e47e57 | 650 | POSIX::_exit(0); |
2c3a6c0a | 651 | } |
b9e47e57 | 652 | kill(-9, $$); |
2c3a6c0a DM |
653 | } |
654 | ||
655 | # parent | |
656 | ||
657 | POSIX::close ($psync[1]); | |
658 | POSIX::close ($csync[0]); | |
659 | ||
660 | my $readbuf = ''; | |
661 | # sync with child (wait until child starts) | |
662 | POSIX::read($psync[0], $readbuf, 4096); | |
663 | ||
664 | if (!$sync) { | |
665 | POSIX::close($psync[0]); | |
666 | &$register_worker($cpid, $user, $upid); | |
667 | } else { | |
668 | chomp $readbuf; | |
669 | } | |
670 | ||
671 | eval { | |
672 | die "got no worker upid - start worker failed\n" if !$readbuf; | |
673 | ||
674 | if ($readbuf =~ m/^ERROR:\s*(.+)$/m) { | |
675 | die "starting worker failed: $1\n"; | |
676 | } | |
677 | ||
678 | if ($readbuf ne $upid) { | |
679 | die "got strange worker upid ('$readbuf' != '$upid') - start worker failed\n"; | |
680 | } | |
681 | ||
682 | if ($sync) { | |
683 | $outfh = PVE::Tools::upid_open($upid); | |
684 | } | |
685 | }; | |
686 | my $err = $@; | |
687 | ||
688 | if (!$err) { | |
689 | my $msg = 'OK'; | |
690 | POSIX::write($csync[1], $msg, length ($msg)); | |
691 | POSIX::close($csync[1]); | |
692 | ||
693 | } else { | |
694 | POSIX::close($csync[1]); | |
b9e47e57 | 695 | kill(-9, $cpid); # make sure it gets killed |
2c3a6c0a DM |
696 | die $err; |
697 | } | |
698 | ||
699 | PVE::Cluster::log_msg('info', $user, "starting task $upid"); | |
700 | ||
5bf71a96 | 701 | my $tlist = active_workers($upid, $sync); |
2c3a6c0a DM |
702 | PVE::Cluster::broadcast_tasklist($tlist); |
703 | ||
704 | my $res = 0; | |
705 | ||
706 | if ($sync) { | |
707 | my $count; | |
708 | my $outbuf = ''; | |
8d6e045f | 709 | my $int_count = 0; |
2c3a6c0a | 710 | eval { |
8d6e045f | 711 | local $SIG{INT} = local $SIG{QUIT} = local $SIG{TERM} = sub { |
527b2e7a DM |
712 | # always send signal to all pgrp members |
713 | my $kpid = -$cpid; | |
8d6e045f | 714 | if ($int_count < 3) { |
527b2e7a | 715 | kill(15, $kpid); # send TERM signal |
8d6e045f | 716 | } else { |
527b2e7a | 717 | kill(9, $kpid); # send KILL signal |
8d6e045f DM |
718 | } |
719 | $int_count++; | |
720 | }; | |
2c3a6c0a | 721 | local $SIG{PIPE} = sub { die "broken pipe\n"; }; |
b28410fc DM |
722 | |
723 | my $select = new IO::Select; | |
724 | my $fh = IO::Handle->new_from_fd($psync[0], 'r'); | |
725 | $select->add($fh); | |
726 | ||
727 | while ($select->count) { | |
728 | my @handles = $select->can_read(1); | |
729 | if (scalar(@handles)) { | |
730 | my $count = sysread ($handles[0], $readbuf, 4096); | |
731 | if (!defined ($count)) { | |
732 | my $err = $!; | |
733 | die "sync pipe read error: $err\n"; | |
2c3a6c0a | 734 | } |
b28410fc DM |
735 | last if $count == 0; # eof |
736 | ||
737 | $outbuf .= $readbuf; | |
738 | while ($outbuf =~ s/^(([^\010\r\n]*)(\r|\n|(\010)+|\r\n))//s) { | |
739 | my $line = $1; | |
740 | my $data = $2; | |
741 | if ($data =~ m/^TASK OK$/) { | |
742 | # skip | |
743 | } elsif ($data =~ m/^TASK ERROR: (.+)$/) { | |
744 | print STDERR "$1\n"; | |
745 | } else { | |
746 | print $line; | |
747 | } | |
748 | if ($outfh) { | |
749 | print $outfh $line; | |
750 | $outfh->flush(); | |
751 | } | |
2c3a6c0a | 752 | } |
b28410fc DM |
753 | } else { |
754 | # some commands daemonize without closing stdout | |
755 | last if !PVE::ProcFSTools::check_process_running($cpid); | |
2c3a6c0a DM |
756 | } |
757 | } | |
758 | }; | |
759 | my $err = $@; | |
760 | ||
761 | POSIX::close($psync[0]); | |
762 | ||
763 | if ($outbuf) { # just to be sure | |
764 | print $outbuf; | |
765 | if ($outfh) { | |
766 | print $outfh $outbuf; | |
767 | } | |
768 | } | |
769 | ||
770 | if ($err) { | |
771 | $err =~ s/\n/ /mg; | |
772 | print STDERR "$err\n"; | |
773 | if ($outfh) { | |
774 | print $outfh "TASK ERROR: $err\n"; | |
775 | } | |
2c3a6c0a DM |
776 | } |
777 | ||
b9e47e57 DM |
778 | &$kill_process_group($cpid, $pstart); # make sure it gets killed |
779 | ||
2c3a6c0a DM |
780 | close($outfh); |
781 | ||
b9e47e57 | 782 | waitpid($cpid, 0); |
2c3a6c0a DM |
783 | $res = $?; |
784 | &$log_task_result($upid, $user, $res); | |
785 | } | |
786 | ||
787 | return wantarray ? ($upid, $res) : $upid; | |
788 | } | |
789 | ||
790 | 1; |