use warnings;
use POSIX qw(EINTR);
use IO::Socket::IP;
+use Socket qw(AF_INET AF_INET6 AI_ALL AI_V4MAPPED);
use IO::Select;
use File::Basename;
use File::Path qw(make_path);
use Digest::SHA;
use Text::ParseWords;
use String::ShellQuote;
-use Time::HiRes qw(usleep gettimeofday tv_interval);
+use Time::HiRes qw(usleep gettimeofday tv_interval alarm);
# avoid warning when parsing long hex values with hex()
no warnings 'portable'; # Support for 64-bit ints required
mkdir $pvelogdir;
mkdir $pvetaskdir;
-my $IPV4OCTET = "(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9])";
+my $IPV4OCTET = "(?:25[0-5]|(?:2[0-4]|1[0-9]|[1-9])?[0-9])";
our $IPV4RE = "(?:(?:$IPV4OCTET\\.){3}$IPV4OCTET)";
my $IPV6H16 = "(?:[0-9a-fA-F]{1,4})";
my $IPV6LS32 = "(?:(?:$IPV4RE|$IPV6H16:$IPV6H16))";
"(?:(?:(?:(?:$IPV6H16:){0,5}$IPV6H16)?::" . ")$IPV6H16)|" .
"(?:(?:(?:(?:$IPV6H16:){0,6}$IPV6H16)?::" . ")))";
+our $IPRE = "(?:$IPV4RE|$IPV6RE)";
+
+use constant (CLONE_NEWNS => 0x00020000,
+ CLONE_NEWUTS => 0x04000000,
+ CLONE_NEWIPC => 0x08000000,
+ CLONE_NEWUSER => 0x10000000,
+ CLONE_NEWPID => 0x20000000,
+ CLONE_NEWNET => 0x40000000);
+
sub run_with_timeout {
my ($timeout, $code, @param) = @_;
die "got timeout\n" if $timeout <= 0;
- my $prev_alarm;
+ my $prev_alarm = alarm 0; # suspend outer alarm early
my $sigcount = 0;
my $res;
- local $SIG{ALRM} = sub { $sigcount++; }; # catch alarm outside eval
-
eval {
local $SIG{ALRM} = sub { $sigcount++; die "got timeout\n"; };
local $SIG{PIPE} = sub { $sigcount++; die "broken pipe\n" };
local $SIG{__DIE__}; # see SA bug 4631
- $prev_alarm = alarm($timeout);
+ alarm($timeout);
- $res = &$code(@param);
+ eval { $res = &$code(@param); };
alarm(0); # avoid race conditions
+
+ die $@ if $@;
};
my $err = $@;
- alarm($prev_alarm) if defined($prev_alarm);
+ alarm $prev_alarm;
+ # this shouldn't happen anymore?
die "unknown error" if $sigcount && !$err; # seems to happen sometimes
die $err if $err;
return $input;
}
+# The $cmd parameter can be:
+# -) a string
+# This is generally executed by passing it to the shell with the -c option.
+# However, it can be executed in one of two ways, depending on whether
+# there's a pipe involved:
+# *) with pipe: passed explicitly to bash -c, prefixed with:
+# set -o pipefail &&
+# *) without a pipe: passed to perl's open3 which uses 'sh -c'
+# (Note that this may result in two different syntax requirements!)
+# FIXME?
+# -) an array of arguments (strings)
+# Will be executed without interference from a shell. (Parameters are passed
+# as is, no escape sequences of strings will be touched.)
+# -) an array of arrays
+# Each array represents a command, and each command's output is piped into
+# the following command's standard input.
+# For this a shell command string is created with pipe symbols between each
+# command.
+# Each command is a list of strings meant to end up in the final command
+# unchanged. In order to achieve this, every argument is shell-quoted.
+# Quoting can be disabled for a particular argument by turning it into a
+# reference, this allows inserting arbitrary shell options.
+# For instance: the $cmd [ [ 'echo', 'hello', \'>/dev/null' ] ] will not
+# produce any output, while the $cmd [ [ 'echo', 'hello', '>/dev/null' ] ]
+# will literally print: hello >/dev/null
sub run_command {
my ($cmd, %param) = @_;
my $old_umask;
my $cmdstr;
- if (!ref($cmd)) {
+ if (my $ref = ref($cmd)) {
+ if (ref($cmd->[0])) {
+ $cmdstr = 'set -o pipefail && ';
+ my $pipe = '';
+ foreach my $command (@$cmd) {
+ # concatenate quoted parameters
+ # strings which are passed by reference are NOT shell quoted
+ $cmdstr .= $pipe . join(' ', map { ref($_) ? $$_ : shellquote($_) } @$command);
+ $pipe = ' | ';
+ }
+ $cmd = [ '/bin/bash', '-c', "set -o pipefail && $cmdstr" ];
+ } else {
+ $cmdstr = cmd2string($cmd);
+ }
+ } else {
$cmdstr = $cmd;
- if ($cmd =~ m/|/) {
+ if ($cmd =~ m/\|/) {
# see 'man bash' for option pipefail
$cmd = [ '/bin/bash', '-c', "set -o pipefail && $cmd" ];
} else {
$cmd = [ $cmd ];
}
- } else {
- $cmdstr = cmd2string($cmd);
}
my $errmsg;
}
sub next_unused_port {
- my ($range_start, $range_end) = @_;
+ my ($range_start, $range_end, $family) = @_;
# We use a file to register allocated ports.
# Those registrations expires after $expiretime.
next if $ports->{$p}; # reserved
my $sock = IO::Socket::IP->new(Listen => 5,
- LocalAddr => '0.0.0.0',
LocalPort => $p,
ReuseAddr => 1,
- Proto => 0);
+ Family => $family,
+ Proto => 0,
+ GetAddrInfoFlags => 0);
if ($sock) {
close($sock);
}
sub next_migrate_port {
- return next_unused_port(60000, 60050);
+ my ($family) = @_;
+ return next_unused_port(60000, 60050, $family);
}
sub next_vnc_port {
- return next_unused_port(5900, 6000);
+ my ($family) = @_;
+ return next_unused_port(5900, 6000, $family);
}
sub next_spice_port {
- return next_unused_port(61000, 61099);
+ my ($family) = @_;
+ return next_unused_port(61000, 61099, $family);
}
# NOTE: NFS syscall can't be interrupted, so alarm does
my $rand = Digest::SHA::sha1_hex($$, rand(), $seconds, $microseconds);
- my $mac = '';
- for (my $i = 0; $i < 6; $i++) {
- my $ss = hex(substr($rand, $i*2, 2));
- if (!$i) {
- $ss &= 0xfe; # clear multicast
- $ss |= 2; # set local id
- }
- $ss = sprintf("%02X", $ss);
-
- if (!$i) {
- $mac .= "$ss";
- } else {
- $mac .= ":$ss";
- }
- }
+ # clear multicast, set local id
+ vec($rand, 0, 8) = (vec($rand, 0, 8) & 0xfe) | 2;
- return $mac;
+ return sprintf("%02X:%02X:%02X:%02X:%02X:%02X", unpack("C6", $rand));
}
sub shellquote {
return ($count, $lines);
}
+sub dump_journal {
+ my ($start, $limit, $filter) = @_;
+
+ my $lines = [];
+ my $count = 0;
+
+ $start = 0 if !$start;
+ $limit = 50 if !$limit;
+
+ my $parser = sub {
+ my $line = shift;
+
+ return if $count++ < $start;
+ return if $limit <= 0;
+ push @$lines, { n => int($count), t => $line};
+ $limit--;
+ };
+
+ my $cmd = ['journalctl', '-o', 'short', '--no-pager'];
+ run_command($cmd, outfunc => $parser);
+
+ # HACK: ExtJS store.guaranteeRange() does not like empty array
+ # so we add a line
+ if (!$count) {
+ $count++;
+ push @$lines, { n => $count, t => "no content"};
+ }
+
+ return ($count, $lines);
+}
+
sub dir_glob_regex {
my ($dir, $regex) = @_;
sub fnv31a_hex { return sprintf("%X", fnv31a(@_)); }
+sub unpack_sockaddr_in46 {
+ my ($sin) = @_;
+ my $family = Socket::sockaddr_family($sin);
+ my ($port, $host) = ($family == AF_INET6 ? Socket::unpack_sockaddr_in6($sin)
+ : Socket::unpack_sockaddr_in($sin));
+ return ($family, $port, $host);
+}
+
+sub getaddrinfo_all {
+ my ($hostname, @opts) = @_;
+ my %hints = ( flags => AI_V4MAPPED | AI_ALL,
+ @opts );
+ my ($err, @res) = Socket::getaddrinfo($hostname, '0', \%hints);
+ die "failed to get address info for: $hostname: $err\n" if $err;
+ return @res;
+}
+
+sub get_host_address_family {
+ my ($hostname, $socktype) = @_;
+ my @res = getaddrinfo_all($hostname, socktype => $socktype);
+ return $res[0]->{family};
+}
+
+# Parses any sane kind of host, or host+port pair:
+# The port is always optional and thus may be undef.
+sub parse_host_and_port {
+ my ($address) = @_;
+ if ($address =~ /^($IPV4RE|[[:alnum:]\-.]+)(?::(\d+))?$/ || # ipv4 or host with optional ':port'
+ $address =~ /^\[($IPV6RE|$IPV4RE|[[:alnum:]\-.]+)\](?::(\d+))?$/ || # anything in brackets with optional ':port'
+ $address =~ /^($IPV6RE)(?:\.(\d+))?$/) # ipv6 with optional port separated by dot
+ {
+ return ($1, $2, 1); # end with 1 to support simple if(parse...) tests
+ }
+ return; # nothing
+}
+
+sub unshare {
+ my ($flags) = @_;
+ syscall 272, $flags;
+}
+
1;
projects / pve-common.git / blobdiff