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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 | ||
83 | sub read_loadavg { | |
84 | ||
85 | my $line = PVE::Tools::file_read_firstline('/proc/loadavg'); | |
86 | ||
87 | if ($line =~ m|^(\d+\.\d+)\s+(\d+\.\d+)\s+(\d+\.\d+)\s+\d+/\d+\s+\d+\s*$|) { | |
88 | return wantarray ? ($1, $2, $3) : $1; | |
89 | } | |
90 | ||
91 | return wantarray ? (0, 0, 0) : 0; | |
92 | } | |
93 | ||
94 | my $last_proc_stat; | |
95 | ||
96 | sub read_proc_stat { | |
97 | my $res = { user => 0, nice => 0, system => 0, idle => 0 , sum => 0}; | |
98 | ||
99 | my $cpucount = 0; | |
100 | ||
101 | if (my $fh = IO::File->new ("/proc/stat", "r")) { | |
102 | while (defined (my $line = <$fh>)) { | |
103 | if ($line =~ m|^cpu\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s|) { | |
104 | $res->{user} = $1; | |
105 | $res->{nice} = $2; | |
106 | $res->{system} = $3; | |
107 | $res->{idle} = $4; | |
108 | $res->{used} = $1+$2+$3; | |
109 | $res->{iowait} = $5; | |
110 | } elsif ($line =~ m|^cpu\d+\s|) { | |
111 | $cpucount++; | |
112 | } | |
113 | } | |
114 | $fh->close; | |
115 | } | |
116 | ||
117 | $cpucount = 1 if !$cpucount; | |
118 | ||
119 | my $ctime = gettimeofday; # floating point time in seconds | |
120 | ||
121 | $res->{ctime} = $ctime; | |
122 | $res->{cpu} = 0; | |
123 | $res->{wait} = 0; | |
124 | ||
125 | $last_proc_stat = $res if !$last_proc_stat; | |
126 | ||
127 | my $diff = ($ctime - $last_proc_stat->{ctime}) * $clock_ticks * $cpucount; | |
128 | ||
129 | if ($diff > 1000) { # don't update too often | |
130 | my $useddiff = $res->{used} - $last_proc_stat->{used}; | |
131 | $useddiff = $diff if $useddiff > $diff; | |
132 | $res->{cpu} = $useddiff/$diff; | |
133 | my $waitdiff = $res->{iowait} - $last_proc_stat->{iowait}; | |
134 | $waitdiff = $diff if $waitdiff > $diff; | |
135 | $res->{wait} = $waitdiff/$diff; | |
136 | $last_proc_stat = $res; | |
137 | } else { | |
138 | $res->{cpu} = $last_proc_stat->{cpu}; | |
139 | $res->{wait} = $last_proc_stat->{wait}; | |
140 | } | |
141 | ||
142 | return $res; | |
143 | } | |
144 | ||
5157a3a2 | 145 | sub read_proc_pid_stat { |
e143e9d8 DM |
146 | my $pid = shift; |
147 | ||
148 | my $statstr = PVE::Tools::file_read_firstline("/proc/$pid/stat"); | |
149 | ||
5157a3a2 DM |
150 | 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+/) { |
151 | return { | |
152 | status => $1, | |
34fe9392 | 153 | ppid => $2, |
5157a3a2 DM |
154 | utime => $3, |
155 | stime => $4, | |
156 | starttime => $7, | |
157 | vsize => $8, | |
158 | rss => $9 * 4096, | |
159 | }; | |
e143e9d8 DM |
160 | } |
161 | ||
5157a3a2 DM |
162 | return undef; |
163 | } | |
164 | ||
165 | sub check_process_running { | |
166 | my ($pid, $pstart) = @_; | |
167 | ||
168 | # note: waitpid only work for child processes, but not | |
169 | # for processes spanned by other processes. | |
170 | # kill(0, pid) return succes for zombies. | |
171 | # So we read the status form /proc/$pid/stat instead | |
9bbc4e17 | 172 | |
5157a3a2 | 173 | my $info = read_proc_pid_stat($pid); |
9bbc4e17 | 174 | |
5399d422 | 175 | return $info && (!$pstart || ($info->{starttime} eq $pstart)) && ($info->{status} ne 'Z') ? $info : undef; |
5157a3a2 DM |
176 | } |
177 | ||
178 | sub read_proc_starttime { | |
179 | my $pid = shift; | |
180 | ||
181 | my $info = read_proc_pid_stat($pid); | |
182 | return $info ? $info->{starttime} : 0; | |
e143e9d8 DM |
183 | } |
184 | ||
185 | sub read_meminfo { | |
186 | ||
187 | my $res = { | |
188 | memtotal => 0, | |
189 | memfree => 0, | |
190 | memused => 0, | |
a01c5465 | 191 | memshared => 0, |
e143e9d8 DM |
192 | swaptotal => 0, |
193 | swapfree => 0, | |
194 | swapused => 0, | |
195 | }; | |
196 | ||
197 | my $fh = IO::File->new ("/proc/meminfo", "r"); | |
198 | return $res if !$fh; | |
199 | ||
200 | my $d = {}; | |
201 | while (my $line = <$fh>) { | |
202 | if ($line =~ m/^(\S+):\s+(\d+)\s*kB/i) { | |
203 | $d->{lc ($1)} = $2 * 1024; | |
9bbc4e17 | 204 | } |
e143e9d8 DM |
205 | } |
206 | close($fh); | |
207 | ||
208 | $res->{memtotal} = $d->{memtotal}; | |
209 | $res->{memfree} = $d->{memfree} + $d->{buffers} + $d->{cached}; | |
210 | $res->{memused} = $res->{memtotal} - $res->{memfree}; | |
211 | ||
212 | $res->{swaptotal} = $d->{swaptotal}; | |
213 | $res->{swapfree} = $d->{swapfree}; | |
214 | $res->{swapused} = $res->{swaptotal} - $res->{swapfree}; | |
215 | ||
a01c5465 DM |
216 | my $spages = PVE::Tools::file_read_firstline("/sys/kernel/mm/ksm/pages_sharing"); |
217 | $res->{memshared} = int($spages) * 4096; | |
218 | ||
e143e9d8 DM |
219 | return $res; |
220 | } | |
221 | ||
222 | # memory usage of current process | |
223 | sub read_memory_usage { | |
224 | ||
225 | my $res = { size => 0, resident => 0, shared => 0 }; | |
226 | ||
227 | my $ps = 4096; | |
228 | ||
229 | my $line = PVE::Tools::file_read_firstline("/proc/$$/statm"); | |
230 | ||
845f01b6 | 231 | if ($line =~ m/^(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s*/) { |
e143e9d8 DM |
232 | $res->{size} = $1*$ps; |
233 | $res->{resident} = $2*$ps; | |
234 | $res->{shared} = $3*$ps; | |
235 | } | |
236 | ||
237 | return $res; | |
238 | } | |
239 | ||
240 | sub read_proc_net_dev { | |
241 | ||
242 | my $res = {}; | |
243 | ||
244 | my $fh = IO::File->new ("/proc/net/dev", "r"); | |
245 | return $res if !$fh; | |
246 | ||
247 | while (defined (my $line = <$fh>)) { | |
248 | if ($line =~ m/^\s*(.*):\s*(\d+)\s+\d+\s+\d+\s+\d+\s+\d+\s+\d+\s+\d+\s+\d+\s+(\d+)\s+/) { | |
249 | $res->{$1} = { | |
250 | receive => $2, | |
251 | transmit => $3, | |
252 | }; | |
253 | } | |
254 | } | |
255 | ||
256 | close($fh); | |
257 | ||
258 | return $res; | |
259 | } | |
260 | ||
0758d092 DM |
261 | sub write_proc_entry { |
262 | my ($filename, $data) = @_;# | |
263 | ||
264 | my $fh = IO::File->new($filename, O_WRONLY); | |
265 | die "unable to open file '$filename' - $!\n" if !$fh; | |
266 | die "unable to write '$filename' - $!\n" unless print $fh $data; | |
267 | die "closing file '$filename' failed - $!\n" unless close $fh; | |
268 | $fh->close(); | |
269 | } | |
270 | ||
a993e470 DM |
271 | sub read_proc_net_route { |
272 | my $filename = "/proc/net/route"; | |
273 | ||
274 | my $res = []; | |
275 | ||
276 | my $fh = IO::File->new ($filename, "r"); | |
277 | return $res if !$fh; | |
278 | ||
279 | my $int_to_quad = sub { | |
280 | return join '.' => map { ($_[0] >> 8*(3-$_)) % 256 } (3, 2, 1, 0); | |
281 | }; | |
282 | ||
283 | while (defined(my $line = <$fh>)) { | |
284 | next if $line =~/^Iface\s+Destination/; # skip head | |
285 | my ($iface, $dest, $gateway, $metric, $mask, $mtu) = (split(/\s+/, $line))[0,1,2,6,7,8]; | |
286 | push @$res, { | |
287 | dest => &$int_to_quad(hex($dest)), | |
288 | gateway => &$int_to_quad(hex($gateway)), | |
289 | mask => &$int_to_quad(hex($mask)), | |
290 | metric => $metric, | |
291 | mtu => $mtu, | |
292 | iface => $iface, | |
293 | }; | |
294 | } | |
295 | ||
296 | return $res; | |
297 | } | |
298 | ||
ad571b75 | 299 | sub read_proc_mounts { |
ee834936 | 300 | return PVE::Tools::file_get_contents("/proc/mounts", 512*1024); |
ad571b75 DM |
301 | } |
302 | ||
072dfa92 WB |
303 | # mounts encode spaces (\040), tabs (\011), newlines (\012), backslashes (\\ or \134) |
304 | sub decode_mount { | |
305 | my ($str) = @_; | |
306 | return $str =~ s/\\(?:040|01[12]|134|\\)/"\"$&\""/geer; | |
307 | } | |
308 | ||
309 | sub parse_mounts { | |
310 | my ($mounts) = @_; | |
311 | my $mntent = []; | |
312 | while ($mounts =~ /^\s*([^#].*)$/gm) { | |
313 | # lines from the file are encoded so we can just split at spaces | |
314 | my ($what, $dir, $fstype, $opts) = split(/[ \t]/, $1, 4); | |
315 | my ($freq, $passno) = (0, 0); | |
316 | # in glibc's parser frequency and pass seem to be optional | |
317 | $freq = $1 if $opts =~ s/\s+(\d+)$//; | |
318 | $passno = $1 if $opts =~ s/\s+(\d+)$//; | |
319 | push @$mntent, [decode_mount($what), | |
320 | decode_mount($dir), | |
321 | decode_mount($fstype), | |
322 | decode_mount($opts), | |
323 | $freq, $passno]; | |
324 | } | |
325 | return $mntent; | |
326 | } | |
327 | ||
328 | sub parse_proc_mounts { | |
329 | return parse_mounts(read_proc_mounts()); | |
330 | } | |
331 | ||
115c8383 WL |
332 | sub is_mounted { |
333 | my ($mountpoint) = @_; | |
334 | ||
11ade4ad WB |
335 | $mountpoint = Cwd::realpath($mountpoint); |
336 | ||
5f808914 FG |
337 | return 0 if !defined($mountpoint); # path does not exist |
338 | ||
072dfa92 WB |
339 | my $mounts = parse_proc_mounts(); |
340 | return (grep { $_->[1] eq $mountpoint } @$mounts) ? 1 : 0; | |
115c8383 WL |
341 | } |
342 | ||
27107d5b WB |
343 | sub read_proc_net_ipv6_route { |
344 | my $filename = "/proc/net/ipv6_route"; | |
345 | ||
346 | my $res = []; | |
347 | ||
348 | my $fh = IO::File->new ($filename, "r"); | |
349 | return $res if !$fh; | |
350 | ||
ef67212c | 351 | my $read_v6addr = sub { $_[0] =~ s/....(?!$)/$&:/gr }; |
27107d5b WB |
352 | |
353 | # ipv6_route has no header | |
354 | while (defined(my $line = <$fh>)) { | |
355 | my ($dest, $prefix, $nexthop, $metric, $iface) = (split(/\s+/, $line))[0,1,4,5,9]; | |
356 | push @$res, { | |
357 | dest => &$read_v6addr($dest), | |
ef67212c | 358 | prefix => hex("$prefix"), |
27107d5b | 359 | gateway => &$read_v6addr($nexthop), |
ef67212c | 360 | metric => hex("$metric"), |
27107d5b WB |
361 | iface => $iface |
362 | }; | |
363 | } | |
364 | ||
365 | return $res; | |
366 | } | |
367 | ||
c1073fdc TL |
368 | sub upid_wait { |
369 | my ($upid, $waitfunc, $sleep_intervall) = @_; | |
370 | ||
371 | my $task = PVE::Tools::upid_decode($upid); | |
372 | ||
373 | $sleep_intervall = $sleep_intervall ? $sleep_intervall : 1; | |
374 | ||
375 | my $next_time = time + $sleep_intervall; | |
376 | ||
377 | while (check_process_running($task->{pid}, $task->{pstart})) { | |
378 | ||
379 | if (time >= $next_time && $waitfunc && ref($waitfunc) eq 'CODE'){ | |
380 | &$waitfunc($task); | |
381 | $next_time = time + $sleep_intervall; | |
382 | } | |
383 | ||
384 | CORE::sleep(1); | |
385 | } | |
386 | } | |
387 | ||
f0d1b04f WB |
388 | # struct ifreq { // FOR SIOCGIFFLAGS: |
389 | # char ifrn_name[IFNAMSIZ] | |
390 | # short ifru_flags | |
391 | # }; | |
392 | my $STRUCT_IFREQ_SIOCGIFFLAGS = 'Z' . IFNAMSIZ . 's1'; | |
393 | sub get_active_network_interfaces { | |
394 | # Use the interface name list from /proc/net/dev | |
395 | open my $fh, '<', '/proc/net/dev' | |
396 | or die "failed to open /proc/net/dev: $!\n"; | |
397 | # And filter by IFF_UP flag fetched via a PF_INET6 socket ioctl: | |
398 | my $sock; | |
399 | socket($sock, PF_INET6, SOCK_DGRAM, &IPPROTO_IP) | |
400 | or socket($sock, PF_INET, SOCK_DGRAM, &IPPROTO_IP) | |
401 | or return []; | |
402 | ||
403 | my $ifaces = []; | |
404 | while(defined(my $line = <$fh>)) { | |
405 | next if $line !~ /^\s*([^:\s]+):/; | |
406 | my $ifname = $1; | |
407 | my $ifreq = pack($STRUCT_IFREQ_SIOCGIFFLAGS, $ifname, 0); | |
408 | if (!defined(ioctl($sock, SIOCGIFFLAGS, $ifreq))) { | |
409 | warn "failed to get interface flags for: $ifname\n"; | |
410 | next; | |
411 | } | |
412 | my ($name, $flags) = unpack($STRUCT_IFREQ_SIOCGIFFLAGS, $ifreq); | |
413 | push @$ifaces, $ifname if ($flags & IFF_UP); | |
414 | } | |
415 | close $fh; | |
416 | close $sock; | |
417 | return $ifaces; | |
418 | } | |
419 | ||
e143e9d8 | 420 | 1; |