5 use POSIX
qw(EINTR EEXIST EOPNOTSUPP);
7 use Socket
qw(AF_INET AF_INET6 AI_ALL AI_V4MAPPED AI_CANONNAME SOCK_DGRAM
11 use File
::Path
qw(make_path);
12 use Filesys
::Df
(); # don't overwrite our df()
18 use Fcntl
qw(:DEFAULT :flock);
25 use String
::ShellQuote
;
26 use Time
::HiRes
qw(usleep gettimeofday tv_interval alarm);
27 use Scalar
::Util
'weaken';
30 # avoid warning when parsing long hex values with hex()
31 no warnings
'portable'; # Support for 64-bit ints required
63 my $pvelogdir = "/var/log/pve";
64 my $pvetaskdir = "$pvelogdir/tasks";
69 my $IPV4OCTET = "(?:25[0-5]|(?:2[0-4]|1[0-9]|[1-9])?[0-9])";
70 our $IPV4RE = "(?:(?:$IPV4OCTET\\.){3}$IPV4OCTET)";
71 my $IPV6H16 = "(?:[0-9a-fA-F]{1,4})";
72 my $IPV6LS32 = "(?:(?:$IPV4RE|$IPV6H16:$IPV6H16))";
75 "(?:(?:" . "(?:$IPV6H16:){6})$IPV6LS32)|" .
76 "(?:(?:" . "::(?:$IPV6H16:){5})$IPV6LS32)|" .
77 "(?:(?:(?:" . "$IPV6H16)?::(?:$IPV6H16:){4})$IPV6LS32)|" .
78 "(?:(?:(?:(?:$IPV6H16:){0,1}$IPV6H16)?::(?:$IPV6H16:){3})$IPV6LS32)|" .
79 "(?:(?:(?:(?:$IPV6H16:){0,2}$IPV6H16)?::(?:$IPV6H16:){2})$IPV6LS32)|" .
80 "(?:(?:(?:(?:$IPV6H16:){0,3}$IPV6H16)?::(?:$IPV6H16:){1})$IPV6LS32)|" .
81 "(?:(?:(?:(?:$IPV6H16:){0,4}$IPV6H16)?::" . ")$IPV6LS32)|" .
82 "(?:(?:(?:(?:$IPV6H16:){0,5}$IPV6H16)?::" . ")$IPV6H16)|" .
83 "(?:(?:(?:(?:$IPV6H16:){0,6}$IPV6H16)?::" . ")))";
85 our $IPRE = "(?:$IPV4RE|$IPV6RE)";
87 use constant {CLONE_NEWNS
=> 0x00020000,
88 CLONE_NEWUTS
=> 0x04000000,
89 CLONE_NEWIPC
=> 0x08000000,
90 CLONE_NEWUSER
=> 0x10000000,
91 CLONE_NEWPID
=> 0x20000000,
92 CLONE_NEWNET
=> 0x40000000};
94 use constant {O_PATH
=> 0x00200000,
95 O_TMPFILE
=> 0x00410000}; # This includes O_DIRECTORY
97 use constant {AT_EMPTY_PATH
=> 0x1000,
100 sub run_with_timeout
{
101 my ($timeout, $code, @param) = @_;
103 die "got timeout\n" if $timeout <= 0;
105 my $prev_alarm = alarm 0; # suspend outer alarm early
112 local $SIG{ALRM
} = sub { $sigcount++; die "got timeout\n"; };
113 local $SIG{PIPE
} = sub { $sigcount++; die "broken pipe\n" };
114 local $SIG{__DIE__
}; # see SA bug 4631
118 eval { $res = &$code(@param); };
120 alarm(0); # avoid race conditions
129 # this shouldn't happen anymore?
130 die "unknown error" if $sigcount && !$err; # seems to happen sometimes
137 # flock: we use one file handle per process, so lock file
138 # can be nested multiple times and succeeds for the same process.
140 # Since this is the only way we lock now and we don't have the old
141 # 'lock(); code(); unlock();' pattern anymore we do not actually need to
142 # count how deep we're nesting. Therefore this hash now stores a weak reference
143 # to a boolean telling us whether we already have a lock.
145 my $lock_handles = {};
148 my ($filename, $timeout, $shared, $code, @param) = @_;
150 $timeout = 10 if !$timeout;
152 my $mode = $shared ? LOCK_SH
: LOCK_EX
;
154 my $lockhash = ($lock_handles->{$$} //= {});
156 # Returns a locked file handle.
157 my $get_locked_file = sub {
158 my $fh = IO
::File-
>new(">>$filename")
159 or die "can't open file - $!\n";
161 if (!flock($fh, $mode|LOCK_NB
)) {
162 print STDERR
"trying to acquire lock...\n";
165 $success = flock($fh, $mode);
166 # try again on EINTR (see bug #273)
167 if ($success || ($! != EINTR
)) {
172 print STDERR
" failed\n";
173 die "can't acquire lock '$filename' - $!\n";
175 print STDERR
" OK\n";
182 my $checkptr = $lockhash->{$filename};
183 my $check = 0; # This must not go out of scope before running the code.
184 my $local_fh; # This must stay local
185 if (!$checkptr || !$$checkptr) {
186 # We cannot create a weak reference in a single atomic step, so we first
187 # create a false-value, then create a reference to it, then weaken it,
188 # and after successfully locking the file we change the boolean value.
190 # The reason for this is that if an outer SIGALRM throws an exception
191 # between creating the reference and weakening it, a subsequent call to
192 # lock_file_full() will see a leftover full reference to a valid
193 # variable. This variable must be 0 in order for said call to attempt to
194 # lock the file anew.
196 # An externally triggered exception elsewhere in the code will cause the
197 # weak reference to become 'undef', and since the file handle is only
198 # stored in the local scope in $local_fh, the file will be closed by
199 # perl's cleanup routines as well.
201 # This still assumes that an IO::File handle can properly deal with such
202 # exceptions thrown during its own destruction, but that's up to perls
204 $lockhash->{$filename} = \
$check;
205 weaken
$lockhash->{$filename};
206 $local_fh = eval { run_with_timeout
($timeout, $get_locked_file) };
208 $@ = "can't lock file '$filename' - $@";
213 $res = eval { &$code(@param); };
220 my ($filename, $timeout, $code, @param) = @_;
222 return lock_file_full
($filename, $timeout, 0, $code, @param);
225 sub file_set_contents
{
226 my ($filename, $data, $perm) = @_;
228 $perm = 0644 if !defined($perm);
230 my $tmpname = "$filename.tmp.$$";
233 my ($fh, $tries) = (undef, 0);
234 while (!$fh && $tries++ < 3) {
235 $fh = IO
::File-
>new($tmpname, O_WRONLY
|O_CREAT
|O_EXCL
, $perm);
236 if (!$fh && $! == EEXIST
) {
237 unlink($tmpname) or die "unable to delete old temp file: $!\n";
240 die "unable to open file '$tmpname' - $!\n" if !$fh;
241 die "unable to write '$tmpname' - $!\n" unless print $fh $data;
242 die "closing file '$tmpname' failed - $!\n" unless close $fh;
251 if (!rename($tmpname, $filename)) {
252 my $msg = "close (rename) atomic file '$filename' failed: $!\n";
258 sub file_get_contents
{
259 my ($filename, $max) = @_;
261 my $fh = IO
::File-
>new($filename, "r") ||
262 die "can't open '$filename' - $!\n";
264 my $content = safe_read_from
($fh, $max, 0, $filename);
272 my ($filename, $dst, $max, $perm) = @_;
274 file_set_contents
($dst, file_get_contents
($filename, $max), $perm);
277 sub file_read_firstline
{
280 my $fh = IO
::File-
>new ($filename, "r");
281 return undef if !$fh;
289 my ($fh, $max, $oneline, $filename) = @_;
291 # pmxcfs file size limit
292 $max = 512*1024 if !$max;
294 my $subject = defined($filename) ?
"file '$filename'" : 'input';
299 while ($count = sysread($fh, $input, 8192, $br)) {
301 die "$subject too long - aborting\n" if $br > $max;
302 if ($oneline && $input =~ m/^(.*)\n/) {
307 die "unable to read $subject - $!\n" if !defined($count);
312 # The $cmd parameter can be:
314 # This is generally executed by passing it to the shell with the -c option.
315 # However, it can be executed in one of two ways, depending on whether
316 # there's a pipe involved:
317 # *) with pipe: passed explicitly to bash -c, prefixed with:
319 # *) without a pipe: passed to perl's open3 which uses 'sh -c'
320 # (Note that this may result in two different syntax requirements!)
322 # -) an array of arguments (strings)
323 # Will be executed without interference from a shell. (Parameters are passed
324 # as is, no escape sequences of strings will be touched.)
325 # -) an array of arrays
326 # Each array represents a command, and each command's output is piped into
327 # the following command's standard input.
328 # For this a shell command string is created with pipe symbols between each
330 # Each command is a list of strings meant to end up in the final command
331 # unchanged. In order to achieve this, every argument is shell-quoted.
332 # Quoting can be disabled for a particular argument by turning it into a
333 # reference, this allows inserting arbitrary shell options.
334 # For instance: the $cmd [ [ 'echo', 'hello', \'>/dev/null' ] ] will not
335 # produce any output, while the $cmd [ [ 'echo', 'hello', '>/dev/null' ] ]
336 # will literally print: hello >/dev/null
338 my ($cmd, %param) = @_;
343 if (my $ref = ref($cmd)) {
344 if (ref($cmd->[0])) {
345 $cmdstr = 'set -o pipefail && ';
347 foreach my $command (@$cmd) {
348 # concatenate quoted parameters
349 # strings which are passed by reference are NOT shell quoted
350 $cmdstr .= $pipe . join(' ', map { ref($_) ?
$$_ : shellquote
($_) } @$command);
353 $cmd = [ '/bin/bash', '-c', "$cmdstr" ];
355 $cmdstr = cmd2string
($cmd);
360 # see 'man bash' for option pipefail
361 $cmd = [ '/bin/bash', '-c', "set -o pipefail && $cmd" ];
386 foreach my $p (keys %param) {
387 if ($p eq 'timeout') {
388 $timeout = $param{$p};
389 } elsif ($p eq 'umask') {
390 $old_umask = umask($param{$p});
391 } elsif ($p eq 'errmsg') {
392 $errmsg = $param{$p};
393 } elsif ($p eq 'input') {
395 } elsif ($p eq 'output') {
396 $output = $param{$p};
397 } elsif ($p eq 'outfunc') {
398 $outfunc = $param{$p};
399 } elsif ($p eq 'errfunc') {
400 $errfunc = $param{$p};
401 } elsif ($p eq 'logfunc') {
402 $logfunc = $param{$p};
403 } elsif ($p eq 'afterfork') {
404 $afterfork = $param{$p};
405 } elsif ($p eq 'noerr') {
407 } elsif ($p eq 'keeplocale') {
408 $keeplocale = $param{$p};
409 } elsif ($p eq 'quiet') {
412 die "got unknown parameter '$p' for run_command\n";
417 my $origerrfunc = $errfunc;
421 &$origerrfunc("$laststderr\n");
423 print STDERR
"$laststderr\n" if $laststderr;
430 my $reader = $output && $output =~ m/^>&/ ?
$output : IO
::File-
>new();
431 my $writer = $input && $input =~ m/^<&/ ?
$input : IO
::File-
>new();
432 my $error = IO
::File-
>new();
437 local $ENV{LC_ALL
} = 'C' if !$keeplocale;
439 # suppress LVM warnings like: "File descriptor 3 left open";
440 local $ENV{LVM_SUPPRESS_FD_WARNINGS
} = "1";
442 $pid = open3
($writer, $reader, $error, @$cmd) || die $!;
444 # if we pipe fron STDIN, open3 closes STDIN, so we we
445 # a perl warning "Filehandle STDIN reopened as GENXYZ .. "
446 # as soon as we open a new file.
447 # to avoid that we open /dev/null
448 if (!ref($writer) && !defined(fileno(STDIN
))) {
450 open(STDIN
, "</dev/null");
457 if ($orig_pid != $$) {
465 local $SIG{ALRM
} = sub { die "got timeout\n"; } if $timeout;
466 $oldtimeout = alarm($timeout) if $timeout;
468 &$afterfork() if $afterfork;
471 print $writer $input if defined $input;
475 my $select = new IO
::Select
;
476 $select->add($reader) if ref($reader);
477 $select->add($error);
482 my $starttime = time();
484 while ($select->count) {
485 my @handles = $select->can_read(1);
487 foreach my $h (@handles) {
489 my $count = sysread ($h, $buf, 4096);
490 if (!defined ($count)) {
496 $select->remove ($h) if !$count;
498 if ($outfunc || $logfunc) {
500 while ($buf =~ s/^([^\010\r\n]*)(\r|\n|(\010)+|\r\n)//) {
501 my $line = $outlog . $1;
503 &$outfunc($line) if $outfunc;
504 &$logfunc($line) if $logfunc;
518 } elsif ($h eq $error) {
519 if ($errfunc || $logfunc) {
521 while ($buf =~ s/^([^\010\r\n]*)(\r|\n|(\010)+|\r\n)//s) {
522 my $line = $errlog . $1;
524 &$errfunc($line) if $errfunc;
525 &$logfunc($line) if $logfunc;
543 &$outfunc($outlog) if $outfunc && $outlog;
544 &$logfunc($outlog) if $logfunc && $outlog;
546 &$errfunc($errlog) if $errfunc && $errlog;
547 &$logfunc($errlog) if $logfunc && $errlog;
552 die "failed to execute\n";
553 } elsif (my $sig = ($? & 127)) {
554 die "got signal $sig\n";
555 } elsif ($exitcode = ($? >> 8)) {
556 if (!($exitcode == 24 && ($cmdstr =~ m
|^(\S
+/)?rsync\s
|))) {
557 if ($errmsg && $laststderr) {
558 my $lerr = $laststderr;
562 die "exit code $exitcode\n";
573 if ($errmsg && $laststderr) {
574 &$errfunc(undef); # flush laststderr
577 umask ($old_umask) if defined($old_umask);
579 alarm($oldtimeout) if $oldtimeout;
582 if ($pid && ($err eq "got timeout\n")) {
585 die "command '$cmdstr' failed: $err";
589 $err =~ s/^usermod:\s*// if $cmdstr =~ m
|^(\S
+/)?usermod\s
|;
592 die "command '$cmdstr' failed: $err";
599 # Run a command with a tcp socket as standard input.
600 sub pipe_socket_to_command
{
601 my ($cmd, $ip, $port) = @_;
606 Proto
=> &Socket
::IPPROTO_TCP
,
607 GetAddrInfoFlags
=> 0,
611 my $socket = IO
::Socket
::IP-
>new(%$params) or die "failed to open socket: $!\n";
613 print "$ip\n$port\n"; # tell remote where to connect
617 local $SIG{ALRM
} = sub { die "timed out waiting for client\n" };
619 my $client = $socket->accept; # Wait for a client
623 # We want that the command talks over the TCP socket and takes
624 # ownership of it, so that when it closes it the connection is
625 # terminated, so we need to be able to close the socket. So we
626 # can't really use PVE::Tools::run_command().
627 my $pid = fork() // die "fork failed: $!\n";
629 POSIX
::dup2
(fileno($client), 0);
630 POSIX
::dup2
(fileno($client), 1);
632 exec {$cmd->[0]} @$cmd or do {
633 warn "exec failed: $!\n";
639 if (waitpid($pid, 0) != $pid) {
640 kill(15 => $pid); # if we got interrupted terminate the child
642 while (waitpid($pid, POSIX
::WNOHANG
) != $pid) {
645 kill(9 => $pid), last if $count > 300; # 30 second timeout
648 if (my $sig = ($? & 127)) {
649 die "got signal $sig\n";
650 } elsif (my $exitcode = ($? >> 8)) {
651 die "exit code $exitcode\n";
658 my $listtxt = shift // '';
660 return split (/\0/, $listtxt) if $listtxt =~ m/\0/;
662 $listtxt =~ s/[,;]/ /g;
663 $listtxt =~ s/^\s+//;
665 my @data = split (/\s+/, $listtxt);
673 return $txt if !defined($txt);
681 # simple uri templates like "/vms/{vmid}"
682 sub template_replace
{
683 my ($tmpl, $data) = @_;
685 return $tmpl if !$tmpl;
688 while ($tmpl =~ m/([^{]+)?(\{([^}]+)\})?/g) {
690 $res .= ($data->{$3} || '-') if $2;
696 my ($filename, $fh, $data) = @_;
700 my $res = print $fh $data;
702 die "write to '$filename' failed\n" if !$res;
708 'at' => 'ftp.at.debian.org',
709 'au' => 'ftp.au.debian.org',
710 'be' => 'ftp.be.debian.org',
711 'bg' => 'ftp.bg.debian.org',
712 'br' => 'ftp.br.debian.org',
713 'ca' => 'ftp.ca.debian.org',
714 'ch' => 'ftp.ch.debian.org',
715 'cl' => 'ftp.cl.debian.org',
716 'cz' => 'ftp.cz.debian.org',
717 'de' => 'ftp.de.debian.org',
718 'dk' => 'ftp.dk.debian.org',
719 'ee' => 'ftp.ee.debian.org',
720 'es' => 'ftp.es.debian.org',
721 'fi' => 'ftp.fi.debian.org',
722 'fr' => 'ftp.fr.debian.org',
723 'gr' => 'ftp.gr.debian.org',
724 'hk' => 'ftp.hk.debian.org',
725 'hr' => 'ftp.hr.debian.org',
726 'hu' => 'ftp.hu.debian.org',
727 'ie' => 'ftp.ie.debian.org',
728 'is' => 'ftp.is.debian.org',
729 'it' => 'ftp.it.debian.org',
730 'jp' => 'ftp.jp.debian.org',
731 'kr' => 'ftp.kr.debian.org',
732 'mx' => 'ftp.mx.debian.org',
733 'nl' => 'ftp.nl.debian.org',
734 'no' => 'ftp.no.debian.org',
735 'nz' => 'ftp.nz.debian.org',
736 'pl' => 'ftp.pl.debian.org',
737 'pt' => 'ftp.pt.debian.org',
738 'ro' => 'ftp.ro.debian.org',
739 'ru' => 'ftp.ru.debian.org',
740 'se' => 'ftp.se.debian.org',
741 'si' => 'ftp.si.debian.org',
742 'sk' => 'ftp.sk.debian.org',
743 'tr' => 'ftp.tr.debian.org',
744 'tw' => 'ftp.tw.debian.org',
745 'gb' => 'ftp.uk.debian.org',
746 'us' => 'ftp.us.debian.org',
751 'dk' => ['Danish', 'da', 'qwerty/dk-latin1.kmap.gz', 'dk', 'nodeadkeys'],
752 'de' => ['German', 'de', 'qwertz/de-latin1-nodeadkeys.kmap.gz', 'de', 'nodeadkeys' ],
753 'de-ch' => ['Swiss-German', 'de-ch', 'qwertz/sg-latin1.kmap.gz', 'ch', 'de_nodeadkeys' ],
754 'en-gb' => ['United Kingdom', 'en-gb', 'qwerty/uk.kmap.gz' , 'gb', undef],
755 'en-us' => ['U.S. English', 'en-us', 'qwerty/us-latin1.kmap.gz', 'us', undef ],
756 'es' => ['Spanish', 'es', 'qwerty/es.kmap.gz', 'es', 'nodeadkeys'],
757 #'et' => [], # Ethopia or Estonia ??
758 'fi' => ['Finnish', 'fi', 'qwerty/fi-latin1.kmap.gz', 'fi', 'nodeadkeys'],
759 #'fo' => ['Faroe Islands', 'fo', ???, 'fo', 'nodeadkeys'],
760 'fr' => ['French', 'fr', 'azerty/fr-latin1.kmap.gz', 'fr', 'nodeadkeys'],
761 'fr-be' => ['Belgium-French', 'fr-be', 'azerty/be2-latin1.kmap.gz', 'be', 'nodeadkeys'],
762 'fr-ca' => ['Canada-French', 'fr-ca', 'qwerty/cf.kmap.gz', 'ca', 'fr-legacy'],
763 'fr-ch' => ['Swiss-French', 'fr-ch', 'qwertz/fr_CH-latin1.kmap.gz', 'ch', 'fr_nodeadkeys'],
764 #'hr' => ['Croatia', 'hr', 'qwertz/croat.kmap.gz', 'hr', ??], # latin2?
765 'hu' => ['Hungarian', 'hu', 'qwertz/hu.kmap.gz', 'hu', undef],
766 'is' => ['Icelandic', 'is', 'qwerty/is-latin1.kmap.gz', 'is', 'nodeadkeys'],
767 'it' => ['Italian', 'it', 'qwerty/it2.kmap.gz', 'it', 'nodeadkeys'],
768 'jp' => ['Japanese', 'ja', 'qwerty/jp106.kmap.gz', 'jp', undef],
769 'lt' => ['Lithuanian', 'lt', 'qwerty/lt.kmap.gz', 'lt', 'std'],
770 #'lv' => ['Latvian', 'lv', 'qwerty/lv-latin4.kmap.gz', 'lv', ??], # latin4 or latin7?
771 'mk' => ['Macedonian', 'mk', 'qwerty/mk.kmap.gz', 'mk', 'nodeadkeys'],
772 'nl' => ['Dutch', 'nl', 'qwerty/nl.kmap.gz', 'nl', undef],
773 #'nl-be' => ['Belgium-Dutch', 'nl-be', ?, ?, ?],
774 'no' => ['Norwegian', 'no', 'qwerty/no-latin1.kmap.gz', 'no', 'nodeadkeys'],
775 'pl' => ['Polish', 'pl', 'qwerty/pl.kmap.gz', 'pl', undef],
776 'pt' => ['Portuguese', 'pt', 'qwerty/pt-latin1.kmap.gz', 'pt', 'nodeadkeys'],
777 'pt-br' => ['Brazil-Portuguese', 'pt-br', 'qwerty/br-latin1.kmap.gz', 'br', 'nodeadkeys'],
778 #'ru' => ['Russian', 'ru', 'qwerty/ru.kmap.gz', 'ru', undef], # don't know?
779 'si' => ['Slovenian', 'sl', 'qwertz/slovene.kmap.gz', 'si', undef],
780 'se' => ['Swedish', 'sv', 'qwerty/se-latin1.kmap.gz', 'se', 'nodeadkeys'],
782 'tr' => ['Turkish', 'tr', 'qwerty/trq.kmap.gz', 'tr', undef],
785 my $kvmkeymaparray = [];
786 foreach my $lc (sort keys %$keymaphash) {
787 push @$kvmkeymaparray, $keymaphash->{$lc}->[1];
795 return $kvmkeymaparray;
799 my ($param, $key) = @_;
801 my $res = $param->{$key};
802 delete $param->{$key};
807 # Note: we use this to wait until vncterm/spiceterm is ready
808 sub wait_for_vnc_port
{
809 my ($port, $family, $timeout) = @_;
811 $timeout = 5 if !$timeout;
813 my $starttime = [gettimeofday
];
816 my $cmd = ['/bin/ss', '-Htln', "sport = :$port"];
817 push @$cmd, $family == AF_INET6 ?
'-6' : '-4' if defined($family);
820 while (($elapsed = tv_interval
($starttime)) < $timeout) {
821 # -Htln = don't print header, tcp, listening sockets only, numeric ports
822 run_command
($cmd, outfunc
=> sub {
824 if ($line =~ m/^LISTEN\s+\d+\s+\d+\s+\S+:(\d+)\s/) {
825 $found = 1 if ($port == $1);
829 $sleeptime += 100000 if $sleeptime < 1000000;
833 die "Timeout while waiting for port '$port' to get ready!\n";
836 sub next_unused_port
{
837 my ($range_start, $range_end, $family, $address) = @_;
839 # We use a file to register allocated ports.
840 # Those registrations expires after $expiretime.
841 # We use this to avoid race conditions between
842 # allocation and use of ports.
844 my $filename = "/var/tmp/pve-reserved-ports";
853 if (my $fh = IO
::File-
>new ($filename, "r")) {
854 while (my $line = <$fh>) {
855 if ($line =~ m/^(\d+)\s(\d+)$/) {
856 my ($port, $timestamp) = ($1, $2);
857 if (($timestamp + $expiretime) > $ctime) {
858 $ports->{$port} = $timestamp; # not expired
865 my %sockargs = (Listen
=> 5,
868 Proto
=> IPPROTO_TCP
,
869 GetAddrInfoFlags
=> 0);
870 $sockargs{LocalAddr
} = $address if defined($address);
872 for (my $p = $range_start; $p < $range_end; $p++) {
873 next if $ports->{$p}; # reserved
875 $sockargs{LocalPort
} = $p;
876 my $sock = IO
::Socket
::IP-
>new(%sockargs);
881 $ports->{$p} = $ctime;
887 foreach my $p (keys %$ports) {
888 $data .= "$p $ports->{$p}\n";
891 file_set_contents
($filename, $data);
896 my $p = lock_file
('/var/lock/pve-ports.lck', 10, $code);
899 die "unable to find free port (${range_start}-${range_end})\n" if !$p;
904 sub next_migrate_port
{
905 my ($family, $address) = @_;
906 return next_unused_port
(60000, 60050, $family, $address);
910 my ($family, $address) = @_;
911 return next_unused_port
(5900, 6000, $family, $address);
914 sub spice_port_range
{
915 return (61000, 61999);
918 sub next_spice_port
{
919 my ($family, $address) = @_;
920 return next_unused_port
(spice_port_range
(), $family, $address);
925 eval { $value = "$value" };
926 return "error turning value into a string: $@" if $@;
930 # sigkill after $timeout a $sub running in a fork if it can't write a pipe
931 # the $sub has to return a single scalar
932 sub run_fork_with_timeout
{
933 my ($timeout, $sub) = @_;
937 my $pipe_out = IO
::Pipe-
>new();
939 # disable pending alarms, save their remaining time
940 my $prev_alarm = alarm 0;
942 # avoid leaving a zombie if the parent gets interrupted
946 if (!defined($child)) {
947 die "fork failed: $!\n";
956 print {$pipe_out} encode_json
({ result
=> $res });
960 print {$pipe_out} encode_json
({ error
=> must_stringify
($err) });
967 local $SIG{INT
} = sub { $sig_received++; };
968 local $SIG{TERM
} = sub {
969 $error //= "interrupted by unexpected signal\n";
970 kill('TERM', $child);
975 my $readvalues = sub {
977 my $child_res = decode_json
(readline_nointr
($pipe_out));
978 $res = $child_res->{result
};
979 $error = $child_res->{error
};
982 if (defined($timeout)) {
983 run_with_timeout
($timeout, $readvalues);
990 kill('KILL', $child);
994 die "interrupted by unexpected signal\n" if $sig_received;
996 die $error if $error;
1002 return run_fork_with_timeout
(undef, $code);
1005 # NOTE: NFS syscall can't be interrupted, so alarm does
1006 # not work to provide timeouts.
1007 # from 'man nfs': "Only SIGKILL can interrupt a pending NFS operation"
1008 # So fork() before using Filesys::Df
1010 my ($path, $timeout) = @_;
1012 my $df = sub { return Filesys
::Df
::df
($path, 1) };
1014 my $res = eval { run_fork_with_timeout
($timeout, $df) } // {};
1017 # untaint, but be flexible: PB usage can result in scientific notation
1018 my ($blocks, $used, $bavail) = map { defined($_) ?
(/^([\d\.e\-+]+)$/) : 0 }
1019 $res->@{qw(blocks used bavail)};
1029 my ($path, $timeout) = @_;
1038 if ($line =~ m/^(\d+)\s+total$/) {
1043 run_command
(['du', '-scb', $path], outfunc
=> $parser, timeout
=> $timeout);
1049 # We use this to uniquely identify a process.
1050 # An 'Unique Process ID' has the following format:
1051 # "UPID:$node:$pid:$pstart:$startime:$dtype:$id:$user"
1056 # Note: pstart can be > 32bit if uptime > 497 days, so this can result in
1057 # more that 8 characters for pstart
1058 return sprintf("UPID:%s:%08X:%08X:%08X:%s:%s:%s:", $d->{node
}, $d->{pid
},
1059 $d->{pstart
}, $d->{starttime
}, $d->{type
}, $d->{id
},
1064 my ($upid, $noerr) = @_;
1069 # "UPID:$node:$pid:$pstart:$startime:$dtype:$id:$user"
1070 # Note: allow up to 9 characters for pstart (work until 20 years uptime)
1071 if ($upid =~ m/^UPID:([a-zA-Z0-9]([a-zA-Z0-9\-]*[a-zA-Z0-9])?):([0-9A-Fa-f]{8}):([0-9A-Fa-f]{8,9}):([0-9A-Fa-f]{8}):([^:\s]+):([^:\s]*):([^:\s]+):$/) {
1073 $res->{pid
} = hex($3);
1074 $res->{pstart
} = hex($4);
1075 $res->{starttime
} = hex($5);
1080 my $subdir = substr($5, 7, 8);
1081 $filename = "$pvetaskdir/$subdir/$upid";
1084 return undef if $noerr;
1085 die "unable to parse worker upid '$upid'\n";
1088 return wantarray ?
($res, $filename) : $res;
1094 my ($task, $filename) = upid_decode
($upid);
1096 my $dirname = dirname
($filename);
1097 make_path
($dirname);
1099 my $wwwid = getpwnam('www-data') ||
1100 die "getpwnam failed";
1104 my $outfh = IO
::File-
>new ($filename, O_WRONLY
|O_CREAT
|O_EXCL
, $perm) ||
1105 die "unable to create output file '$filename' - $!\n";
1106 chown $wwwid, -1, $outfh;
1111 sub upid_read_status
{
1114 my ($task, $filename) = upid_decode
($upid);
1115 my $fh = IO
::File-
>new($filename, "r");
1116 return "unable to open file - $!" if !$fh;
1118 sysseek($fh, -$maxlen, 2);
1120 my $br = sysread($fh, $readbuf, $maxlen);
1123 return "unable to extract last line"
1124 if $readbuf !~ m/\n?(.+)$/;
1126 if ($line =~ m/^TASK OK$/) {
1128 } elsif ($line =~ m/^TASK ERROR: (.+)$/) {
1131 return "unexpected status";
1134 return "unable to read tail (got $br bytes)";
1137 # useful functions to store comments in config files
1141 # all control and hi-bit characters, and ':'
1142 my $unsafe = "^\x20-\x39\x3b-\x7e";
1143 return uri_escape
(Encode
::encode
("utf8", $text), $unsafe);
1149 return Encode
::decode
("utf8", uri_unescape
($data));
1152 # depreciated - do not use!
1153 # we now decode all parameters by default
1154 sub decode_utf8_parameters
{
1157 foreach my $p (qw(comment description firstname lastname)) {
1158 $param->{$p} = decode
('utf8', $param->{$p}) if $param->{$p};
1164 sub random_ether_addr
{
1167 my ($seconds, $microseconds) = gettimeofday
;
1169 my $rand = Digest
::SHA
::sha1
($$, rand(), $seconds, $microseconds);
1171 # clear multicast, set local id
1172 vec($rand, 0, 8) = (vec($rand, 0, 8) & 0xfe) | 2;
1174 my $addr = sprintf("%02X:%02X:%02X:%02X:%02X:%02X", unpack("C6", $rand));
1175 if (defined($prefix)) {
1176 $addr = uc($prefix) . substr($addr, length($prefix));
1184 return String
::ShellQuote
::shell_quote
($str);
1190 die "no arguments" if !$cmd;
1192 return $cmd if !ref($cmd);
1195 foreach my $arg (@$cmd) { push @qa, shellquote
($arg); }
1197 return join (' ', @qa);
1200 # split an shell argument string into an array,
1204 return $str ?
[ Text
::ParseWords
::shellwords
($str) ] : [];
1208 my ($filename, $start, $limit, $filter) = @_;
1213 my $fh = IO
::File-
>new($filename, "r");
1216 push @$lines, { n
=> $count, t
=> "unable to open file - $!"};
1217 return ($count, $lines);
1220 $start = 0 if !$start;
1221 $limit = 50 if !$limit;
1226 # duplicate code, so that we do not slow down normal path
1227 while (defined($line = <$fh>)) {
1228 next if $line !~ m/$filter/;
1229 next if $count++ < $start;
1230 next if $limit <= 0;
1232 push @$lines, { n
=> $count, t
=> $line};
1236 while (defined($line = <$fh>)) {
1237 next if $count++ < $start;
1238 next if $limit <= 0;
1240 push @$lines, { n
=> $count, t
=> $line};
1247 # HACK: ExtJS store.guaranteeRange() does not like empty array
1251 push @$lines, { n
=> $count, t
=> "no content"};
1254 return ($count, $lines);
1258 my ($start, $limit, $since, $until, $service) = @_;
1263 $start = 0 if !$start;
1264 $limit = 50 if !$limit;
1269 return if $count++ < $start;
1270 return if $limit <= 0;
1271 push @$lines, { n
=> int($count), t
=> $line};
1275 my $cmd = ['journalctl', '-o', 'short', '--no-pager'];
1277 push @$cmd, '--unit', $service if $service;
1278 push @$cmd, '--since', $since if $since;
1279 push @$cmd, '--until', $until if $until;
1280 run_command
($cmd, outfunc
=> $parser);
1282 # HACK: ExtJS store.guaranteeRange() does not like empty array
1286 push @$lines, { n
=> $count, t
=> "no content"};
1289 return ($count, $lines);
1292 sub dir_glob_regex
{
1293 my ($dir, $regex) = @_;
1295 my $dh = IO
::Dir-
>new ($dir);
1296 return wantarray ?
() : undef if !$dh;
1298 while (defined(my $tmp = $dh->read)) {
1299 if (my @res = $tmp =~ m/^($regex)$/) {
1301 return wantarray ?
@res : $tmp;
1306 return wantarray ?
() : undef;
1309 sub dir_glob_foreach
{
1310 my ($dir, $regex, $func) = @_;
1312 my $dh = IO
::Dir-
>new ($dir);
1314 while (defined(my $tmp = $dh->read)) {
1315 if (my @res = $tmp =~ m/^($regex)$/) {
1322 sub assert_if_modified
{
1323 my ($digest1, $digest2) = @_;
1325 if ($digest1 && $digest2 && ($digest1 ne $digest2)) {
1326 die "detected modified configuration - file changed by other user? Try again.\n";
1330 # Digest for short strings
1331 # like FNV32a, but we only return 31 bits (positive numbers)
1335 my $hval = 0x811c9dc5;
1337 foreach my $c (unpack('C*', $string)) {
1345 $hval = $hval & 0xffffffff;
1347 return $hval & 0x7fffffff;
1350 sub fnv31a_hex
{ return sprintf("%X", fnv31a
(@_)); }
1352 sub unpack_sockaddr_in46
{
1354 my $family = Socket
::sockaddr_family
($sin);
1355 my ($port, $host) = ($family == AF_INET6 ? Socket
::unpack_sockaddr_in6
($sin)
1356 : Socket
::unpack_sockaddr_in
($sin));
1357 return ($family, $port, $host);
1360 sub getaddrinfo_all
{
1361 my ($hostname, @opts) = @_;
1362 my %hints = ( flags
=> AI_V4MAPPED
| AI_ALL
,
1364 my ($err, @res) = Socket
::getaddrinfo
($hostname, '0', \
%hints);
1365 die "failed to get address info for: $hostname: $err\n" if $err;
1369 sub get_host_address_family
{
1370 my ($hostname, $socktype) = @_;
1371 my @res = getaddrinfo_all
($hostname, socktype
=> $socktype);
1372 return $res[0]->{family
};
1375 # get the fully qualified domain name of a host
1376 # same logic as hostname(1): The FQDN is the name getaddrinfo(3) returns,
1377 # given a nodename as a parameter
1379 my ($nodename) = @_;
1382 flags
=> AI_CANONNAME
,
1383 socktype
=> SOCK_DGRAM
1386 my ($err, @addrs) = Socket
::getaddrinfo
($nodename, undef, $hints);
1388 die "getaddrinfo: $err" if $err;
1390 return $addrs[0]->{canonname
};
1393 # Parses any sane kind of host, or host+port pair:
1394 # The port is always optional and thus may be undef.
1395 sub parse_host_and_port
{
1397 if ($address =~ /^($IPV4RE|[[:alnum:]\-.]+)(?::(\d+))?$/ || # ipv4 or host with optional ':port'
1398 $address =~ /^\[($IPV6RE|$IPV4RE|[[:alnum:]\-.]+)\](?::(\d+))?$/ || # anything in brackets with optional ':port'
1399 $address =~ /^($IPV6RE)(?:\.(\d+))?$/) # ipv6 with optional port separated by dot
1401 return ($1, $2, 1); # end with 1 to support simple if(parse...) tests
1406 sub setresuid
($$$) {
1407 my ($ruid, $euid, $suid) = @_;
1408 return 0 == syscall(PVE
::Syscall
::setresuid
, $ruid, $euid, $suid);
1413 return 0 == syscall(PVE
::Syscall
::unshare
, $flags);
1417 my ($fileno, $nstype) = @_;
1418 return 0 == syscall(PVE
::Syscall
::setns
, $fileno, $nstype);
1423 return 0 == syscall(PVE
::Syscall
::syncfs
, $fileno);
1428 return 0 == syscall(PVE
::Syscall
::fsync
, $fileno);
1431 sub sync_mountpoint
{
1433 sysopen my $fd, $path, O_PATH
or die "failed to open $path: $!\n";
1434 my $result = syncfs
(fileno($fd));
1439 # support sending multi-part mail messages with a text and or a HTML part
1440 # mailto may be a single email string or an array of receivers
1442 my ($mailto, $subject, $text, $html, $mailfrom, $author) = @_;
1443 my $mail_re = qr/[^-a-zA-Z0-9+._@]/;
1445 $mailto = [ $mailto ] if !ref($mailto);
1447 foreach (@$mailto) {
1448 die "illegal character in mailto address\n"
1449 if ($_ =~ $mail_re);
1452 my $rcvrtxt = join (', ', @$mailto);
1454 $mailfrom = $mailfrom || "root";
1455 die "illegal character in mailfrom address\n"
1456 if $mailfrom =~ $mail_re;
1458 $author = $author || 'Proxmox VE';
1460 open (MAIL
, "|-", "sendmail", "-B", "8BITMIME", "-f", $mailfrom, "--", @$mailto) ||
1461 die "unable to open 'sendmail' - $!";
1463 # multipart spec see https://www.ietf.org/rfc/rfc1521.txt
1464 my $boundary = "----_=_NextPart_001_".int(time).$$;
1466 print MAIL
"Content-Type: multipart/alternative;\n";
1467 print MAIL
"\tboundary=\"$boundary\"\n";
1468 print MAIL "MIME-Version
: 1.0\n";
1470 print MAIL "FROM
: $author <$mailfrom>\n";
1471 print MAIL "TO
: $rcvrtxt\n";
1472 print MAIL "SUBJECT
: $subject\n";
1474 print MAIL "This
is a multi-part message
in MIME format
.\n\n";
1475 print MAIL "--$boundary\n";
1477 if (defined($text)) {
1478 print MAIL "Content-Type
: text
/plain
;\n";
1479 print MAIL "\tcharset
=\"UTF8
\"\n";
1480 print MAIL "Content-Transfer-Encoding
: 8bit
\n";
1483 # avoid 'remove extra line breaks' issue (MS Outlook)
1485 $text =~ s/^/$fill/gm;
1489 print MAIL "\n--$boundary\n";
1492 if (defined($html)) {
1493 print MAIL "Content-Type
: text
/html
;\n";
1494 print MAIL "\tcharset
=\"UTF8
\"\n";
1495 print MAIL "Content-Transfer-Encoding
: 8bit
\n";
1500 print MAIL "\n--$boundary--\n";
1507 my ($perm, %opts) = @_;
1509 # default permissions are stricter than with file_set_contents
1510 $perm = 0600 if !defined($perm);
1512 my $dir = $opts{dir} // '/run';
1513 my $mode = $opts{mode} // O_RDWR;
1514 $mode |= O_EXCL if !$opts{allow_links};
1516 my $fh = IO::File->new($dir, $mode | O_TMPFILE, $perm);
1517 if (!$fh && $! == EOPNOTSUPP) {
1518 $dir = '/tmp' if !defined($opts{dir});
1519 $dir .= "/.tmpfile
.$$";
1520 $fh = IO::File->new($dir, $mode | O_CREAT | O_EXCL, $perm);
1521 unlink($dir) if $fh;
1523 die "failed to create tempfile
: $!\n" if !$fh;
1527 sub tempfile_contents {
1528 my ($data, $perm, %opts) = @_;
1530 my $fh = tempfile($perm, %opts);
1532 die "unable to
write to tempfile
: $!\n" if !print {$fh} $data;
1533 die "unable to flush to tempfile
: $!\n" if !defined($fh->flush());
1540 return ("/proc/$$/fd/".$fh->fileno, $fh);
1543 sub validate_ssh_public_keys {
1545 my @lines = split(/\n/, $raw);
1547 foreach my $line (@lines) {
1548 next if $line =~ m/^\s*$/;
1550 my ($filename, $handle) = tempfile_contents($line);
1551 run_command(["ssh-keygen
", "-l
", "-f
", $filename],
1552 outfunc => sub {}, errfunc => sub {});
1554 die "SSH public key validation error
\n" if $@;
1559 my ($dirfd, $pathname, $flags, $mode) = @_;
1560 my $fd = syscall(PVE::Syscall::openat, $dirfd, $pathname, $flags, $mode//0);
1561 return undef if $fd < 0;
1562 # sysopen() doesn't deal with numeric file descriptors apparently
1563 # so we need to convert to a mode string for IO::Handle->new_from_fd
1564 my $flagstr = ($flags & O_RDWR) ? 'rw' : ($flags & O_WRONLY) ? 'w' : 'r';
1565 my $handle = IO::Handle->new_from_fd($fd, $flagstr);
1566 return $handle if $handle;
1567 my $err = $!; # save error before closing the raw fd
1568 syscall(PVE::Syscall::close, $fd); # close
1574 my ($dirfd, $name, $mode) = @_;
1575 return syscall(PVE::Syscall::mkdirat, $dirfd, $name, $mode) == 0;
1578 sub fchownat($$$$$) {
1579 my ($dirfd, $pathname, $owner, $group, $flags) = @_;
1580 return syscall(PVE::Syscall::fchownat, $dirfd, $pathname, $owner, $group, $flags) == 0;
1583 my $salt_starter = time();
1589 my $salt = substr(Digest::SHA::sha1_base64(time() + $salt_starter + $$), 0, 8);
1591 # crypt does not want '+' in salt (see 'man crypt')
1594 return crypt(encode("utf8
", $pw), "\
$5\$$salt\$");
1597 # intended usage: convert_size($val, "kb
" => "gb
")
1598 # we round up to the next integer by default
1599 # E.g. `convert_size(1023, "b
" => "kb
")` returns 1
1600 # use $no_round_up to switch this off, above example would then return 0
1601 # this is also true for converting down e.g. 0.0005 gb to mb returns 1
1602 # (0 if $no_round_up is true)
1603 # allowed formats for value:
1609 my ($value, $from, $to, $no_round_up) = @_;
1620 die "no value
given"
1621 if !defined($value) || $value eq "";
1623 $from = lc($from // ''); $to = lc($to // '');
1624 die "unknown
'from' and/or 'to' units
($from => $to)"
1625 if !defined($units->{$from}) || !defined($units->{$to});
1627 die "value
'$value' is not a valid
, positive number
"
1628 if $value !~ m/^(?:[0-9]+\.?[0-9]*|[0-9]*\.[0-9]+)$/;
1630 my $shift_amount = ($units->{$from} - $units->{$to}) * 10;
1632 $value *= 2**$shift_amount;
1633 $value++ if !$no_round_up && ($value - int($value)) > 0.0;
1638 # uninterruptible readline
1640 sub readline_nointr {
1645 last if defined($line) || ($! != EINTR);
1652 $host_arch = (POSIX::uname())[4] if !$host_arch;
1656 # Devices are: [ (12 bits minor) (12 bits major) (8 bits minor) ]
1657 sub dev_t_major($) {
1659 return (int($dev_t) & 0xfff00) >> 8;
1662 sub dev_t_minor($) {
1664 $dev_t = int($dev_t);
1665 return (($dev_t >> 12) & 0xfff00) | ($dev_t & 0xff);
1668 # Given an array of array refs [ \[a b c], \[a b b], \[e b a] ]
1669 # Returns the intersection of elements as a single array [a b]
1670 sub array_intersect {
1673 if (!ref($arrays->[0])) {
1674 $arrays = [ grep { ref($_) eq 'ARRAY' } @_ ];
1677 return [] if scalar(@$arrays) == 0;
1678 return $arrays->[0] if scalar(@$arrays) == 1;
1680 my $array_unique = sub {
1682 return grep { ! $seen{ $_ }++ } @_;
1685 # base idea is to get all unique members from the first array, then
1686 # check the common elements with the next (uniquely made) one, only keep
1687 # those. Repeat for every array and at the end we only have those left
1688 # which exist in all arrays
1689 my $return_arr = [ $array_unique->(@{$arrays->[0]}) ];
1690 for my $i (1 .. $#$arrays) {
1692 # $return_arr is already unique, explicit at before the loop, implicit below.
1693 foreach my $element (@$return_arr, $array_unique->(@{$arrays->[$i]})) {
1697 foreach my $element (keys %count) {
1698 push @$return_arr, $element if $count{$element} > 1;
1700 last if scalar(@$return_arr) == 0; # empty intersection, early exit
1706 sub open_tree($$$) {
1707 my ($dfd, $pathname, $flags) = @_;
1708 return PVE::Syscall::file_handle_result(syscall(
1709 &PVE::Syscall::open_tree,
1716 sub move_mount($$$$$) {
1717 my ($from_dirfd, $from_pathname, $to_dirfd, $to_pathname, $flags) = @_;
1718 return 0 == syscall(
1719 &PVE::Syscall::move_mount,
1729 my ($fsname, $flags) = @_;
1730 return PVE::Syscall::file_handle_result(syscall(&PVE::Syscall::fsopen, $fsname, $flags));
1734 my ($fd, $flags, $mount_attrs) = @_;
1735 return PVE::Syscall::file_handle_result(syscall(
1736 &PVE::Syscall::fsmount,
1744 my ($dirfd, $pathname, $flags) = @_;
1745 return PVE::Syscall::file_handle_result(syscall(
1746 &PVE::Syscall::fspick,
1753 sub fsconfig($$$$$) {
1754 my ($fd, $command, $key, $value, $aux) = @_;
1755 return 0 == syscall(&PVE::Syscall::fsconfig, $fd, $command, $key, $value, $aux);
1758 # "raw
" mount, old api, not for generic use (as it does not invoke any helpers).
1759 # use for lower level stuff such as bind/remount/... or simple tmpfs mounts
1761 my ($source, $target, $filesystemtype, $mountflags, $data) = @_;
1762 return 0 == syscall(
1763 &PVE::Syscall::mount,
1773 my ($left, $right, $cmp) = @_;
1775 return 0 if !defined($left) && !defined($right);
1776 return -1 if !defined($left);
1777 return 1 if !defined($right);
1778 return $cmp->($left, $right);