use POSIX;
use Time::HiRes qw (gettimeofday);
use IO::File;
+use List::Util qw(sum);
use PVE::Tools;
use Cwd qw();
+use Socket qw(PF_INET PF_INET6 SOCK_DGRAM IPPROTO_IP);
+
+use constant IFF_UP => 1;
+use constant IFNAMSIZ => 16;
+use constant SIOCGIFFLAGS => 0x8913;
+
my $clock_ticks = POSIX::sysconf(&POSIX::_SC_CLK_TCK);
my $cpuinfo;
mhz => 0,
cpus => 1,
sockets => 1,
+ flags => '',
};
my $fh = IO::File->new ($fn, "r");
return $res if !$fh;
+ my $cpuid = 0;
my $idhash = {};
my $count = 0;
while (defined(my $line = <$fh>)) {
$res->{model} = $1 if $res->{model} eq 'unknown';
} elsif ($line =~ m/^cpu\s+MHz\s*:\s*(\d+\.\d+)\s*$/i) {
$res->{mhz} = $1 if !$res->{mhz};
- } elsif ($line =~ m/^flags\s*:.*(vmx|svm)/) {
- $res->{hvm} = 1; # Hardware Virtual Machine (Intel VT / AMD-V)
+ } elsif ($line =~ m/^flags\s*:\s*(.*)$/) {
+ $res->{flags} = $1 if !length $res->{flags};
} elsif ($line =~ m/^physical id\s*:\s*(\d+)\s*$/i) {
- $idhash->{$1} = 1;
+ $cpuid = $1;
+ $idhash->{$1} = 1 if not defined($idhash->{$1});
+ } elsif ($line =~ m/^cpu cores\s*:\s*(\d+)\s*$/i) {
+ $idhash->{$cpuid} = $1 if defined($idhash->{$cpuid});
}
}
+ # Hardware Virtual Machine (Intel VT / AMD-V)
+ $res->{hvm} = $res->{flags} =~ m/\s(vmx|svm)\s/;
+
$res->{sockets} = scalar(keys %$idhash) || 1;
+ $res->{cores} = sum(values %$idhash) || 1;
+
$res->{cpus} = $count;
$fh->close;
-
+
$cpuinfo = $res;
return $res;
return (0, 0);
}
+sub kernel_version {
+ my $line = PVE::Tools::file_read_firstline("/proc/version");
+
+ if ($line && $line =~ m|^Linux\sversion\s((\d+(?:\.\d+)+)-?(\S+)?)|) {
+ my ($fullversion, $version_numbers, $extra) = ($1, $2, $3);
+
+ # variable names are the one from the Linux kernel Makefile
+ my ($version, $patchlevel, $sublevel) = split(/\./, $version_numbers);
+
+ return wantarray
+ ? (int($version), int($patchlevel), int($sublevel), $extra, $fullversion)
+ : $fullversion;
+ }
+
+ return (0, 0, 0, '', '');
+}
+
+# Check if the kernel is at least $major.$minor. Return either just a boolean,
+# or a boolean and the kernel version's major.minor string from /proc/version
+sub check_kernel_release {
+ my ($major, $minor) = @_;
+
+ my ($k_major, $k_minor) = kernel_version();
+
+ my $ok;
+ if (defined($minor)) {
+ $ok = $k_major > $major || ($k_major == $major && $k_minor >= $minor);
+ } else {
+ $ok = $k_major >= $major;
+ }
+
+ return wantarray ? ($ok, "$k_major.$k_minor") : $ok;
+}
+
sub read_loadavg {
my $line = PVE::Tools::file_read_firstline('/proc/loadavg');
my $useddiff = $res->{used} - $last_proc_stat->{used};
$useddiff = $diff if $useddiff > $diff;
$res->{cpu} = $useddiff/$diff;
+
my $waitdiff = $res->{iowait} - $last_proc_stat->{iowait};
$waitdiff = $diff if $waitdiff > $diff;
$res->{wait} = $waitdiff/$diff;
+
$last_proc_stat = $res;
} else {
$res->{cpu} = $last_proc_stat->{cpu};
if ($statstr && $statstr =~ m/^$pid \(.*\) (\S) (-?\d+) -?\d+ -?\d+ -?\d+ -?\d+ \d+ \d+ \d+ \d+ \d+ (\d+) (\d+) (-?\d+) (-?\d+) -?\d+ -?\d+ -?\d+ 0 (\d+) (\d+) (-?\d+) \d+ \d+ \d+ \d+ \d+ \d+ \d+ \d+ \d+ \d+ \d+ \d+ \d+ -?\d+ -?\d+ \d+ \d+ \d+/) {
return {
status => $1,
+ ppid => $2,
utime => $3,
stime => $4,
starttime => $7,
# for processes spanned by other processes.
# kill(0, pid) return succes for zombies.
# So we read the status form /proc/$pid/stat instead
-
+
my $info = read_proc_pid_stat($pid);
-
+
return $info && (!$pstart || ($info->{starttime} eq $pstart)) && ($info->{status} ne 'Z') ? $info : undef;
}
while (my $line = <$fh>) {
if ($line =~ m/^(\S+):\s+(\d+)\s*kB/i) {
$d->{lc ($1)} = $2 * 1024;
- }
+ }
}
close($fh);
$res->{swapfree} = $d->{swapfree};
$res->{swapused} = $res->{swaptotal} - $res->{swapfree};
- my $spages = PVE::Tools::file_read_firstline("/sys/kernel/mm/ksm/pages_sharing");
+ my $spages = PVE::Tools::file_read_firstline("/sys/kernel/mm/ksm/pages_sharing") // 0 ;
$res->{memshared} = int($spages) * 4096;
return $res;
}
sub read_proc_mounts {
- return PVE::Tools::file_get_contents("/proc/mounts");
+ return PVE::Tools::file_get_contents("/proc/mounts", 512*1024);
}
# mounts encode spaces (\040), tabs (\011), newlines (\012), backslashes (\\ or \134)
}
}
+# struct ifreq { // FOR SIOCGIFFLAGS:
+# char ifrn_name[IFNAMSIZ]
+# short ifru_flags
+# };
+my $STRUCT_IFREQ_SIOCGIFFLAGS = 'Z' . IFNAMSIZ . 's1';
+sub get_active_network_interfaces {
+ # Use the interface name list from /proc/net/dev
+ open my $fh, '<', '/proc/net/dev'
+ or die "failed to open /proc/net/dev: $!\n";
+ # And filter by IFF_UP flag fetched via a PF_INET6 socket ioctl:
+ my $sock;
+ socket($sock, PF_INET6, SOCK_DGRAM, &IPPROTO_IP)
+ or socket($sock, PF_INET, SOCK_DGRAM, &IPPROTO_IP)
+ or return [];
+
+ my $ifaces = [];
+ while(defined(my $line = <$fh>)) {
+ next if $line !~ /^\s*([^:\s]+):/;
+ my $ifname = $1;
+ my $ifreq = pack($STRUCT_IFREQ_SIOCGIFFLAGS, $ifname, 0);
+ if (!defined(ioctl($sock, SIOCGIFFLAGS, $ifreq))) {
+ warn "failed to get interface flags for: $ifname\n";
+ next;
+ }
+ my ($name, $flags) = unpack($STRUCT_IFREQ_SIOCGIFFLAGS, $ifreq);
+ push @$ifaces, $ifname if ($flags & IFF_UP);
+ }
+ close $fh;
+ close $sock;
+ return $ifaces;
+}
+
1;
projects / pve-common.git / blobdiff