1 package PVE
::ProcFSTools
;
6 use Time
::HiRes qw
(gettimeofday
);
8 use List
::Util
qw(sum);
12 use Socket
qw(PF_INET PF_INET6 SOCK_DGRAM IPPROTO_IP);
14 use constant IFF_UP
=> 1;
15 use constant IFNAMSIZ
=> 16;
16 use constant SIOCGIFFLAGS
=> 0x8913;
18 my $clock_ticks = POSIX
::sysconf
(&POSIX
::_SC_CLK_TCK
);
23 my $fn = '/proc/cpuinfo';
25 return $cpuinfo if $cpuinfo;
28 user_hz
=> $clock_ticks,
36 my $fh = IO
::File-
>new ($fn, "r");
42 while (defined(my $line = <$fh>)) {
43 if ($line =~ m/^processor\s*:\s*\d+\s*$/i) {
45 } elsif ($line =~ m/^model\s+name\s*:\s*(.*)\s*$/i) {
46 $res->{model
} = $1 if $res->{model
} eq 'unknown';
47 } elsif ($line =~ m/^cpu\s+MHz\s*:\s*(\d+\.\d+)\s*$/i) {
48 $res->{mhz
} = $1 if !$res->{mhz
};
49 } elsif ($line =~ m/^flags\s*:\s*(.*)$/) {
50 $res->{flags
} = $1 if !length $res->{flags
};
51 } elsif ($line =~ m/^physical id\s*:\s*(\d+)\s*$/i) {
53 $idhash->{$1} = 1 if not defined($idhash->{$1});
54 } elsif ($line =~ m/^cpu cores\s*:\s*(\d+)\s*$/i) {
55 $idhash->{$cpuid} = $1 if defined($idhash->{$cpuid});
59 # Hardware Virtual Machine (Intel VT / AMD-V)
60 $res->{hvm
} = $res->{flags
} =~ m/\s(vmx|svm)\s/;
62 $res->{sockets
} = scalar(keys %$idhash) || 1;
64 $res->{cores
} = sum
(values %$idhash) || 1;
66 $res->{cpus
} = $count;
75 sub read_proc_uptime
{
78 my $line = PVE
::Tools
::file_read_firstline
("/proc/uptime");
79 if ($line && $line =~ m
|^(\d
+\
.\d
+)\s
+(\d
+\
.\d
+)\s
*$|) {
81 return (int($1*$clock_ticks), int($2*$clock_ticks));
83 return (int($1), int($2));
91 my $line = PVE
::Tools
::file_read_firstline
("/proc/version");
93 if ($line && $line =~ m
|^Linux\sversion\s
((\d
+(?
:\
.\d
+)+)-?
(\S
+)?
)|) {
94 my ($fullversion, $version_numbers, $extra) = ($1, $2, $3);
96 # variable names are the one from the Linux kernel Makefile
97 my ($version, $patchlevel, $sublevel) = split(/\./, $version_numbers);
100 ?
(int($version), int($patchlevel), int($sublevel), $extra, $fullversion)
104 return (0, 0, 0, '', '');
107 # Check if the kernel is at least $major.$minor. Return either just a boolean,
108 # or a boolean and the kernel version's major.minor string from /proc/version
109 sub check_kernel_release
{
110 my ($major, $minor) = @_;
112 my ($k_major, $k_minor) = kernel_version
();
115 if (defined($minor)) {
116 $ok = $k_major > $major || ($k_major == $major && $k_minor >= $minor);
118 $ok = $k_major >= $major;
121 return wantarray ?
($ok, "$k_major.$k_minor") : $ok;
126 my $line = PVE
::Tools
::file_read_firstline
('/proc/loadavg');
128 if ($line =~ m
|^(\d
+\
.\d
+)\s
+(\d
+\
.\d
+)\s
+(\d
+\
.\d
+)\s
+\d
+/\d
+\s
+\d
+\s
*$|) {
129 return wantarray ?
($1, $2, $3) : $1;
132 return wantarray ?
(0, 0, 0) : 0;
138 foreach my $type (qw(cpu memory io)) {
139 if (my $fh = IO
::File-
>new ("/proc/pressure/$type", "r")) {
140 while (defined (my $line = <$fh>)) {
141 if ($line =~ /^(some|full)\s+avg10\=(\d+\.\d+)\s+avg60\=(\d+\.\d+)\s+avg300\=(\d+\.\d+)\s+total\=(\d+)/) {
142 $res->{$type}->{$1}->{avg10
} = $2;
143 $res->{$type}->{$1}->{avg60
} = $3;
144 $res->{$type}->{$1}->{avg300
} = $4;
156 my $res = { user
=> 0, nice
=> 0, system => 0, idle
=> 0 , sum
=> 0};
160 if (my $fh = IO
::File-
>new ("/proc/stat", "r")) {
161 while (defined (my $line = <$fh>)) {
162 if ($line =~ m
|^cpu\s
+(\d
+)\s
+(\d
+)\s
+(\d
+)\s
+(\d
+)\s
+(\d
+)\s
|) {
167 $res->{used
} = $1+$2+$3;
169 } elsif ($line =~ m
|^cpu\d
+\s
|) {
176 $cpucount = 1 if !$cpucount;
178 my $ctime = gettimeofday
; # floating point time in seconds
180 $res->{ctime
} = $ctime;
184 $last_proc_stat = $res if !$last_proc_stat;
186 my $diff = ($ctime - $last_proc_stat->{ctime
}) * $clock_ticks * $cpucount;
188 if ($diff > 1000) { # don't update too often
189 my $useddiff = $res->{used
} - $last_proc_stat->{used
};
190 $useddiff = $diff if $useddiff > $diff;
191 $res->{cpu
} = $useddiff/$diff;
193 my $waitdiff = $res->{iowait
} - $last_proc_stat->{iowait
};
194 $waitdiff = $diff if $waitdiff > $diff;
195 $res->{wait} = $waitdiff/$diff;
197 $last_proc_stat = $res;
199 $res->{cpu
} = $last_proc_stat->{cpu
};
200 $res->{wait} = $last_proc_stat->{wait};
206 sub read_proc_pid_stat
{
209 my $statstr = PVE
::Tools
::file_read_firstline
("/proc/$pid/stat");
211 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+/) {
226 sub check_process_running
{
227 my ($pid, $pstart) = @_;
229 # note: waitpid only work for child processes, but not
230 # for processes spanned by other processes.
231 # kill(0, pid) return succes for zombies.
232 # So we read the status form /proc/$pid/stat instead
234 my $info = read_proc_pid_stat
($pid);
236 return $info && (!$pstart || ($info->{starttime
} eq $pstart)) && ($info->{status
} ne 'Z') ?
$info : undef;
239 sub read_proc_starttime
{
242 my $info = read_proc_pid_stat
($pid);
243 return $info ?
$info->{starttime
} : 0;
258 my $fh = IO
::File-
>new ("/proc/meminfo", "r");
262 while (my $line = <$fh>) {
263 if ($line =~ m/^(\S+):\s+(\d+)\s*kB/i) {
264 $d->{lc ($1)} = $2 * 1024;
269 $res->{memtotal
} = $d->{memtotal
};
270 $res->{memfree
} = $d->{memfree
} + $d->{buffers
} + $d->{cached
};
271 $res->{memused
} = $res->{memtotal
} - $res->{memfree
};
273 $res->{swaptotal
} = $d->{swaptotal
};
274 $res->{swapfree
} = $d->{swapfree
};
275 $res->{swapused
} = $res->{swaptotal
} - $res->{swapfree
};
277 my $spages = PVE
::Tools
::file_read_firstline
("/sys/kernel/mm/ksm/pages_sharing") // 0 ;
278 $res->{memshared
} = int($spages) * 4096;
283 # memory usage of current process
284 sub read_memory_usage
{
286 my $res = { size
=> 0, resident
=> 0, shared
=> 0 };
290 my $line = PVE
::Tools
::file_read_firstline
("/proc/$$/statm");
292 if ($line =~ m/^(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s*/) {
293 $res->{size
} = $1*$ps;
294 $res->{resident
} = $2*$ps;
295 $res->{shared
} = $3*$ps;
301 sub read_proc_net_dev
{
305 my $fh = IO
::File-
>new ("/proc/net/dev", "r");
308 while (defined (my $line = <$fh>)) {
309 if ($line =~ m/^\s*(.*):\s*(\d+)\s+\d+\s+\d+\s+\d+\s+\d+\s+\d+\s+\d+\s+\d+\s+(\d+)\s+/) {
322 sub write_proc_entry
{
323 my ($filename, $data) = @_;#
325 my $fh = IO
::File-
>new($filename, O_WRONLY
);
326 die "unable to open file '$filename' - $!\n" if !$fh;
327 die "unable to write '$filename' - $!\n" unless print $fh $data;
328 die "closing file '$filename' failed - $!\n" unless close $fh;
332 sub read_proc_net_route
{
333 my $filename = "/proc/net/route";
337 my $fh = IO
::File-
>new ($filename, "r");
340 my $int_to_quad = sub {
341 return join '.' => map { ($_[0] >> 8*(3-$_)) % 256 } (3, 2, 1, 0);
344 while (defined(my $line = <$fh>)) {
345 next if $line =~/^Iface\s+Destination/; # skip head
346 my ($iface, $dest, $gateway, $metric, $mask, $mtu) = (split(/\s+/, $line))[0,1,2,6,7,8];
348 dest
=> &$int_to_quad(hex($dest)),
349 gateway
=> &$int_to_quad(hex($gateway)),
350 mask
=> &$int_to_quad(hex($mask)),
360 sub read_proc_mounts
{
361 return PVE
::Tools
::file_get_contents
("/proc/mounts", 512*1024);
364 # mounts encode spaces (\040), tabs (\011), newlines (\012), backslashes (\\ or \134)
367 return $str =~ s/\\(?:040|01[12]|134|\\)/"\"$&\""/geer;
373 while ($mounts =~ /^\s*([^#].*)$/gm) {
374 # lines from the file are encoded so we can just split at spaces
375 my ($what, $dir, $fstype, $opts) = split(/[ \t]/, $1, 4);
376 my ($freq, $passno) = (0, 0);
377 # in glibc's parser frequency and pass seem to be optional
378 $freq = $1 if $opts =~ s/\s+(\d+)$//;
379 $passno = $1 if $opts =~ s/\s+(\d+)$//;
380 push @$mntent, [decode_mount
($what),
382 decode_mount
($fstype),
389 sub parse_proc_mounts
{
390 return parse_mounts
(read_proc_mounts
());
394 my ($mountpoint) = @_;
396 $mountpoint = Cwd
::realpath
($mountpoint);
398 return 0 if !defined($mountpoint); # path does not exist
400 my $mounts = parse_proc_mounts
();
401 return (grep { $_->[1] eq $mountpoint } @$mounts) ?
1 : 0;
404 sub read_proc_net_ipv6_route
{
405 my $filename = "/proc/net/ipv6_route";
409 my $fh = IO
::File-
>new ($filename, "r");
412 my $read_v6addr = sub { $_[0] =~ s/....(?!$)/$&:/gr };
414 # ipv6_route has no header
415 while (defined(my $line = <$fh>)) {
416 my ($dest, $prefix, $nexthop, $metric, $iface) = (split(/\s+/, $line))[0,1,4,5,9];
418 dest
=> &$read_v6addr($dest),
419 prefix
=> hex("$prefix"),
420 gateway
=> &$read_v6addr($nexthop),
421 metric
=> hex("$metric"),
430 my ($upid, $waitfunc, $sleep_intervall) = @_;
432 my $task = PVE
::Tools
::upid_decode
($upid);
434 $sleep_intervall = $sleep_intervall ?
$sleep_intervall : 1;
436 my $next_time = time + $sleep_intervall;
438 while (check_process_running
($task->{pid
}, $task->{pstart
})) {
440 if (time >= $next_time && $waitfunc && ref($waitfunc) eq 'CODE'){
442 $next_time = time + $sleep_intervall;
449 # struct ifreq { // FOR SIOCGIFFLAGS:
450 # char ifrn_name[IFNAMSIZ]
453 my $STRUCT_IFREQ_SIOCGIFFLAGS = 'Z' . IFNAMSIZ
. 's1';
454 sub get_active_network_interfaces
{
455 # Use the interface name list from /proc/net/dev
456 open my $fh, '<', '/proc/net/dev'
457 or die "failed to open /proc/net/dev: $!\n";
458 # And filter by IFF_UP flag fetched via a PF_INET6 socket ioctl:
460 socket($sock, PF_INET6
, SOCK_DGRAM
, &IPPROTO_IP
)
461 or socket($sock, PF_INET
, SOCK_DGRAM
, &IPPROTO_IP
)
465 while(defined(my $line = <$fh>)) {
466 next if $line !~ /^\s*([^:\s]+):/;
468 my $ifreq = pack($STRUCT_IFREQ_SIOCGIFFLAGS, $ifname, 0);
469 if (!defined(ioctl($sock, SIOCGIFFLAGS
, $ifreq))) {
470 warn "failed to get interface flags for: $ifname\n";
473 my ($name, $flags) = unpack($STRUCT_IFREQ_SIOCGIFFLAGS, $ifreq);
474 push @$ifaces, $ifname if ($flags & IFF_UP
);