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Commit | Line | Data |
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e143e9d8 DM |
1 | package PVE::ProcFSTools; |
2 | ||
3 | use strict; | |
c36f332e | 4 | use warnings; |
e143e9d8 DM |
5 | use POSIX; |
6 | use Time::HiRes qw (gettimeofday); | |
7 | use IO::File; | |
8 | use PVE::Tools; | |
b78e40c0 | 9 | use Cwd qw(); |
e143e9d8 | 10 | |
f0d1b04f WB |
11 | use Socket qw(PF_INET PF_INET6 SOCK_DGRAM IPPROTO_IP); |
12 | ||
13 | use constant IFF_UP => 1; | |
14 | use constant IFNAMSIZ => 16; | |
15 | use constant SIOCGIFFLAGS => 0x8913; | |
16 | ||
e143e9d8 DM |
17 | my $clock_ticks = POSIX::sysconf(&POSIX::_SC_CLK_TCK); |
18 | ||
19 | my $cpuinfo; | |
20 | ||
e143e9d8 DM |
21 | sub read_cpuinfo { |
22 | my $fn = '/proc/cpuinfo'; | |
23 | ||
24 | return $cpuinfo if $cpuinfo; | |
25 | ||
26 | my $res = { | |
8104dfe3 | 27 | user_hz => $clock_ticks, |
e143e9d8 DM |
28 | model => 'unknown', |
29 | mhz => 0, | |
30 | cpus => 1, | |
66bda4e0 | 31 | sockets => 1, |
568abb4b | 32 | flags => '', |
e143e9d8 DM |
33 | }; |
34 | ||
35 | my $fh = IO::File->new ($fn, "r"); | |
36 | return $res if !$fh; | |
37 | ||
4235c2f3 | 38 | my $idhash = {}; |
e143e9d8 DM |
39 | my $count = 0; |
40 | while (defined(my $line = <$fh>)) { | |
41 | if ($line =~ m/^processor\s*:\s*\d+\s*$/i) { | |
42 | $count++; | |
43 | } elsif ($line =~ m/^model\s+name\s*:\s*(.*)\s*$/i) { | |
44 | $res->{model} = $1 if $res->{model} eq 'unknown'; | |
45 | } elsif ($line =~ m/^cpu\s+MHz\s*:\s*(\d+\.\d+)\s*$/i) { | |
46 | $res->{mhz} = $1 if !$res->{mhz}; | |
568abb4b SR |
47 | } elsif ($line =~ m/^flags\s*:\s*(.*)$/) { |
48 | $res->{flags} = $1 if !length $res->{flags}; | |
66bda4e0 | 49 | } elsif ($line =~ m/^physical id\s*:\s*(\d+)\s*$/i) { |
4235c2f3 | 50 | $idhash->{$1} = 1; |
e143e9d8 DM |
51 | } |
52 | } | |
53 | ||
568abb4b SR |
54 | # Hardware Virtual Machine (Intel VT / AMD-V) |
55 | $res->{hvm} = $res->{flags} =~ m/\s(vmx|svm)\s/; | |
56 | ||
4235c2f3 DM |
57 | $res->{sockets} = scalar(keys %$idhash) || 1; |
58 | ||
e143e9d8 DM |
59 | $res->{cpus} = $count; |
60 | ||
61 | $fh->close; | |
568abb4b | 62 | |
e143e9d8 DM |
63 | $cpuinfo = $res; |
64 | ||
65 | return $res; | |
66 | } | |
67 | ||
68 | sub read_proc_uptime { | |
69 | my $ticks = shift; | |
70 | ||
71 | my $line = PVE::Tools::file_read_firstline("/proc/uptime"); | |
72 | if ($line && $line =~ m|^(\d+\.\d+)\s+(\d+\.\d+)\s*$|) { | |
73 | if ($ticks) { | |
5157a3a2 | 74 | return (int($1*$clock_ticks), int($2*$clock_ticks)); |
e143e9d8 DM |
75 | } else { |
76 | return (int($1), int($2)); | |
77 | } | |
78 | } | |
79 | ||
80 | return (0, 0); | |
81 | } | |
82 | ||
2f98cd72 TL |
83 | sub kernel_version { |
84 | my $line = PVE::Tools::file_read_firstline("/proc/version"); | |
85 | ||
86 | if ($line && $line =~ m|^Linux\sversion\s((\d+(?:\.\d+)+)-?(\S+)?)|) { | |
87 | my ($fullversion, $version_numbers, $extra) = ($1, $2, $3); | |
88 | ||
89 | # variable names are the one from the Linux kernel Makefile | |
90 | my ($version, $patchlevel, $sublevel) = split(/\./, $version_numbers); | |
91 | ||
92 | return wantarray | |
93 | ? (int($version), int($patchlevel), int($sublevel), $extra, $fullversion) | |
94 | : $fullversion; | |
95 | } | |
96 | ||
97 | return (0, 0, 0, '', ''); | |
98 | } | |
99 | ||
1446e6a8 TL |
100 | # Check if the kernel is at least $major.$minor. Return either just a boolean, |
101 | # or a boolean and the kernel version's major.minor string from /proc/version | |
102 | sub check_kernel_release { | |
103 | my ($major, $minor) = @_; | |
104 | ||
105 | my ($k_major, $k_minor) = kernel_version(); | |
106 | ||
107 | my $ok; | |
108 | if (defined($minor)) { | |
109 | $ok = $k_major > $major || ($k_major == $major && $k_minor >= $minor); | |
110 | } else { | |
111 | $ok = $k_major >= $major; | |
112 | } | |
113 | ||
114 | return wantarray ? ($ok, "$k_major.$k_minor") : $ok; | |
115 | } | |
116 | ||
e143e9d8 DM |
117 | sub read_loadavg { |
118 | ||
119 | my $line = PVE::Tools::file_read_firstline('/proc/loadavg'); | |
120 | ||
121 | if ($line =~ m|^(\d+\.\d+)\s+(\d+\.\d+)\s+(\d+\.\d+)\s+\d+/\d+\s+\d+\s*$|) { | |
122 | return wantarray ? ($1, $2, $3) : $1; | |
123 | } | |
124 | ||
125 | return wantarray ? (0, 0, 0) : 0; | |
126 | } | |
127 | ||
128 | my $last_proc_stat; | |
129 | ||
130 | sub read_proc_stat { | |
131 | my $res = { user => 0, nice => 0, system => 0, idle => 0 , sum => 0}; | |
132 | ||
133 | my $cpucount = 0; | |
134 | ||
135 | if (my $fh = IO::File->new ("/proc/stat", "r")) { | |
136 | while (defined (my $line = <$fh>)) { | |
137 | if ($line =~ m|^cpu\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s|) { | |
138 | $res->{user} = $1; | |
139 | $res->{nice} = $2; | |
140 | $res->{system} = $3; | |
141 | $res->{idle} = $4; | |
142 | $res->{used} = $1+$2+$3; | |
143 | $res->{iowait} = $5; | |
144 | } elsif ($line =~ m|^cpu\d+\s|) { | |
145 | $cpucount++; | |
146 | } | |
147 | } | |
148 | $fh->close; | |
149 | } | |
150 | ||
151 | $cpucount = 1 if !$cpucount; | |
152 | ||
153 | my $ctime = gettimeofday; # floating point time in seconds | |
154 | ||
155 | $res->{ctime} = $ctime; | |
156 | $res->{cpu} = 0; | |
157 | $res->{wait} = 0; | |
158 | ||
159 | $last_proc_stat = $res if !$last_proc_stat; | |
160 | ||
161 | my $diff = ($ctime - $last_proc_stat->{ctime}) * $clock_ticks * $cpucount; | |
162 | ||
163 | if ($diff > 1000) { # don't update too often | |
164 | my $useddiff = $res->{used} - $last_proc_stat->{used}; | |
165 | $useddiff = $diff if $useddiff > $diff; | |
166 | $res->{cpu} = $useddiff/$diff; | |
f27d5e6b | 167 | |
e143e9d8 DM |
168 | my $waitdiff = $res->{iowait} - $last_proc_stat->{iowait}; |
169 | $waitdiff = $diff if $waitdiff > $diff; | |
170 | $res->{wait} = $waitdiff/$diff; | |
f27d5e6b | 171 | |
e143e9d8 DM |
172 | $last_proc_stat = $res; |
173 | } else { | |
174 | $res->{cpu} = $last_proc_stat->{cpu}; | |
175 | $res->{wait} = $last_proc_stat->{wait}; | |
176 | } | |
177 | ||
178 | return $res; | |
179 | } | |
180 | ||
5157a3a2 | 181 | sub read_proc_pid_stat { |
e143e9d8 DM |
182 | my $pid = shift; |
183 | ||
184 | my $statstr = PVE::Tools::file_read_firstline("/proc/$pid/stat"); | |
185 | ||
5157a3a2 DM |
186 | 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+/) { |
187 | return { | |
188 | status => $1, | |
34fe9392 | 189 | ppid => $2, |
5157a3a2 DM |
190 | utime => $3, |
191 | stime => $4, | |
192 | starttime => $7, | |
193 | vsize => $8, | |
194 | rss => $9 * 4096, | |
195 | }; | |
e143e9d8 DM |
196 | } |
197 | ||
5157a3a2 DM |
198 | return undef; |
199 | } | |
200 | ||
201 | sub check_process_running { | |
202 | my ($pid, $pstart) = @_; | |
203 | ||
204 | # note: waitpid only work for child processes, but not | |
205 | # for processes spanned by other processes. | |
206 | # kill(0, pid) return succes for zombies. | |
207 | # So we read the status form /proc/$pid/stat instead | |
9bbc4e17 | 208 | |
5157a3a2 | 209 | my $info = read_proc_pid_stat($pid); |
9bbc4e17 | 210 | |
5399d422 | 211 | return $info && (!$pstart || ($info->{starttime} eq $pstart)) && ($info->{status} ne 'Z') ? $info : undef; |
5157a3a2 DM |
212 | } |
213 | ||
214 | sub read_proc_starttime { | |
215 | my $pid = shift; | |
216 | ||
217 | my $info = read_proc_pid_stat($pid); | |
218 | return $info ? $info->{starttime} : 0; | |
e143e9d8 DM |
219 | } |
220 | ||
221 | sub read_meminfo { | |
222 | ||
223 | my $res = { | |
224 | memtotal => 0, | |
225 | memfree => 0, | |
226 | memused => 0, | |
a01c5465 | 227 | memshared => 0, |
e143e9d8 DM |
228 | swaptotal => 0, |
229 | swapfree => 0, | |
230 | swapused => 0, | |
231 | }; | |
232 | ||
233 | my $fh = IO::File->new ("/proc/meminfo", "r"); | |
234 | return $res if !$fh; | |
235 | ||
236 | my $d = {}; | |
237 | while (my $line = <$fh>) { | |
238 | if ($line =~ m/^(\S+):\s+(\d+)\s*kB/i) { | |
239 | $d->{lc ($1)} = $2 * 1024; | |
9bbc4e17 | 240 | } |
e143e9d8 DM |
241 | } |
242 | close($fh); | |
243 | ||
244 | $res->{memtotal} = $d->{memtotal}; | |
245 | $res->{memfree} = $d->{memfree} + $d->{buffers} + $d->{cached}; | |
246 | $res->{memused} = $res->{memtotal} - $res->{memfree}; | |
247 | ||
248 | $res->{swaptotal} = $d->{swaptotal}; | |
249 | $res->{swapfree} = $d->{swapfree}; | |
250 | $res->{swapused} = $res->{swaptotal} - $res->{swapfree}; | |
251 | ||
a01c5465 DM |
252 | my $spages = PVE::Tools::file_read_firstline("/sys/kernel/mm/ksm/pages_sharing"); |
253 | $res->{memshared} = int($spages) * 4096; | |
254 | ||
e143e9d8 DM |
255 | return $res; |
256 | } | |
257 | ||
258 | # memory usage of current process | |
259 | sub read_memory_usage { | |
260 | ||
261 | my $res = { size => 0, resident => 0, shared => 0 }; | |
262 | ||
263 | my $ps = 4096; | |
264 | ||
265 | my $line = PVE::Tools::file_read_firstline("/proc/$$/statm"); | |
266 | ||
845f01b6 | 267 | if ($line =~ m/^(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s*/) { |
e143e9d8 DM |
268 | $res->{size} = $1*$ps; |
269 | $res->{resident} = $2*$ps; | |
270 | $res->{shared} = $3*$ps; | |
271 | } | |
272 | ||
273 | return $res; | |
274 | } | |
275 | ||
276 | sub read_proc_net_dev { | |
277 | ||
278 | my $res = {}; | |
279 | ||
280 | my $fh = IO::File->new ("/proc/net/dev", "r"); | |
281 | return $res if !$fh; | |
282 | ||
283 | while (defined (my $line = <$fh>)) { | |
284 | if ($line =~ m/^\s*(.*):\s*(\d+)\s+\d+\s+\d+\s+\d+\s+\d+\s+\d+\s+\d+\s+\d+\s+(\d+)\s+/) { | |
285 | $res->{$1} = { | |
286 | receive => $2, | |
287 | transmit => $3, | |
288 | }; | |
289 | } | |
290 | } | |
291 | ||
292 | close($fh); | |
293 | ||
294 | return $res; | |
295 | } | |
296 | ||
0758d092 DM |
297 | sub write_proc_entry { |
298 | my ($filename, $data) = @_;# | |
299 | ||
300 | my $fh = IO::File->new($filename, O_WRONLY); | |
301 | die "unable to open file '$filename' - $!\n" if !$fh; | |
302 | die "unable to write '$filename' - $!\n" unless print $fh $data; | |
303 | die "closing file '$filename' failed - $!\n" unless close $fh; | |
304 | $fh->close(); | |
305 | } | |
306 | ||
a993e470 DM |
307 | sub read_proc_net_route { |
308 | my $filename = "/proc/net/route"; | |
309 | ||
310 | my $res = []; | |
311 | ||
312 | my $fh = IO::File->new ($filename, "r"); | |
313 | return $res if !$fh; | |
314 | ||
315 | my $int_to_quad = sub { | |
316 | return join '.' => map { ($_[0] >> 8*(3-$_)) % 256 } (3, 2, 1, 0); | |
317 | }; | |
318 | ||
319 | while (defined(my $line = <$fh>)) { | |
320 | next if $line =~/^Iface\s+Destination/; # skip head | |
321 | my ($iface, $dest, $gateway, $metric, $mask, $mtu) = (split(/\s+/, $line))[0,1,2,6,7,8]; | |
322 | push @$res, { | |
323 | dest => &$int_to_quad(hex($dest)), | |
324 | gateway => &$int_to_quad(hex($gateway)), | |
325 | mask => &$int_to_quad(hex($mask)), | |
326 | metric => $metric, | |
327 | mtu => $mtu, | |
328 | iface => $iface, | |
329 | }; | |
330 | } | |
331 | ||
332 | return $res; | |
333 | } | |
334 | ||
ad571b75 | 335 | sub read_proc_mounts { |
ee834936 | 336 | return PVE::Tools::file_get_contents("/proc/mounts", 512*1024); |
ad571b75 DM |
337 | } |
338 | ||
072dfa92 WB |
339 | # mounts encode spaces (\040), tabs (\011), newlines (\012), backslashes (\\ or \134) |
340 | sub decode_mount { | |
341 | my ($str) = @_; | |
342 | return $str =~ s/\\(?:040|01[12]|134|\\)/"\"$&\""/geer; | |
343 | } | |
344 | ||
345 | sub parse_mounts { | |
346 | my ($mounts) = @_; | |
347 | my $mntent = []; | |
348 | while ($mounts =~ /^\s*([^#].*)$/gm) { | |
349 | # lines from the file are encoded so we can just split at spaces | |
350 | my ($what, $dir, $fstype, $opts) = split(/[ \t]/, $1, 4); | |
351 | my ($freq, $passno) = (0, 0); | |
352 | # in glibc's parser frequency and pass seem to be optional | |
353 | $freq = $1 if $opts =~ s/\s+(\d+)$//; | |
354 | $passno = $1 if $opts =~ s/\s+(\d+)$//; | |
355 | push @$mntent, [decode_mount($what), | |
356 | decode_mount($dir), | |
357 | decode_mount($fstype), | |
358 | decode_mount($opts), | |
359 | $freq, $passno]; | |
360 | } | |
361 | return $mntent; | |
362 | } | |
363 | ||
364 | sub parse_proc_mounts { | |
365 | return parse_mounts(read_proc_mounts()); | |
366 | } | |
367 | ||
115c8383 WL |
368 | sub is_mounted { |
369 | my ($mountpoint) = @_; | |
370 | ||
11ade4ad WB |
371 | $mountpoint = Cwd::realpath($mountpoint); |
372 | ||
5f808914 FG |
373 | return 0 if !defined($mountpoint); # path does not exist |
374 | ||
072dfa92 WB |
375 | my $mounts = parse_proc_mounts(); |
376 | return (grep { $_->[1] eq $mountpoint } @$mounts) ? 1 : 0; | |
115c8383 WL |
377 | } |
378 | ||
27107d5b WB |
379 | sub read_proc_net_ipv6_route { |
380 | my $filename = "/proc/net/ipv6_route"; | |
381 | ||
382 | my $res = []; | |
383 | ||
384 | my $fh = IO::File->new ($filename, "r"); | |
385 | return $res if !$fh; | |
386 | ||
ef67212c | 387 | my $read_v6addr = sub { $_[0] =~ s/....(?!$)/$&:/gr }; |
27107d5b WB |
388 | |
389 | # ipv6_route has no header | |
390 | while (defined(my $line = <$fh>)) { | |
391 | my ($dest, $prefix, $nexthop, $metric, $iface) = (split(/\s+/, $line))[0,1,4,5,9]; | |
392 | push @$res, { | |
393 | dest => &$read_v6addr($dest), | |
ef67212c | 394 | prefix => hex("$prefix"), |
27107d5b | 395 | gateway => &$read_v6addr($nexthop), |
ef67212c | 396 | metric => hex("$metric"), |
27107d5b WB |
397 | iface => $iface |
398 | }; | |
399 | } | |
400 | ||
401 | return $res; | |
402 | } | |
403 | ||
c1073fdc TL |
404 | sub upid_wait { |
405 | my ($upid, $waitfunc, $sleep_intervall) = @_; | |
406 | ||
407 | my $task = PVE::Tools::upid_decode($upid); | |
408 | ||
409 | $sleep_intervall = $sleep_intervall ? $sleep_intervall : 1; | |
410 | ||
411 | my $next_time = time + $sleep_intervall; | |
412 | ||
413 | while (check_process_running($task->{pid}, $task->{pstart})) { | |
414 | ||
415 | if (time >= $next_time && $waitfunc && ref($waitfunc) eq 'CODE'){ | |
416 | &$waitfunc($task); | |
417 | $next_time = time + $sleep_intervall; | |
418 | } | |
419 | ||
420 | CORE::sleep(1); | |
421 | } | |
422 | } | |
423 | ||
f0d1b04f WB |
424 | # struct ifreq { // FOR SIOCGIFFLAGS: |
425 | # char ifrn_name[IFNAMSIZ] | |
426 | # short ifru_flags | |
427 | # }; | |
428 | my $STRUCT_IFREQ_SIOCGIFFLAGS = 'Z' . IFNAMSIZ . 's1'; | |
429 | sub get_active_network_interfaces { | |
430 | # Use the interface name list from /proc/net/dev | |
431 | open my $fh, '<', '/proc/net/dev' | |
432 | or die "failed to open /proc/net/dev: $!\n"; | |
433 | # And filter by IFF_UP flag fetched via a PF_INET6 socket ioctl: | |
434 | my $sock; | |
435 | socket($sock, PF_INET6, SOCK_DGRAM, &IPPROTO_IP) | |
436 | or socket($sock, PF_INET, SOCK_DGRAM, &IPPROTO_IP) | |
437 | or return []; | |
438 | ||
439 | my $ifaces = []; | |
440 | while(defined(my $line = <$fh>)) { | |
441 | next if $line !~ /^\s*([^:\s]+):/; | |
442 | my $ifname = $1; | |
443 | my $ifreq = pack($STRUCT_IFREQ_SIOCGIFFLAGS, $ifname, 0); | |
444 | if (!defined(ioctl($sock, SIOCGIFFLAGS, $ifreq))) { | |
445 | warn "failed to get interface flags for: $ifname\n"; | |
446 | next; | |
447 | } | |
448 | my ($name, $flags) = unpack($STRUCT_IFREQ_SIOCGIFFLAGS, $ifreq); | |
449 | push @$ifaces, $ifname if ($flags & IFF_UP); | |
450 | } | |
451 | close $fh; | |
452 | close $sock; | |
453 | return $ifaces; | |
454 | } | |
455 | ||
e143e9d8 | 456 | 1; |