use strict;
use warnings;
+
use POSIX qw(EINTR);
+use Socket;
+
use File::Path;
use File::Spec;
use Cwd qw();
-use Fcntl ':flock';
+use Fcntl qw(O_RDONLY);
-use PVE::Cluster qw(cfs_register_file cfs_read_file);
+use PVE::Exception qw(raise_perm_exc);
use PVE::Storage;
use PVE::SafeSyslog;
use PVE::INotify;
-use PVE::JSONSchema qw(get_standard_option);
-use PVE::Tools qw($IPV6RE $IPV4RE dir_glob_foreach);
+use PVE::Tools qw($IPV6RE $IPV4RE dir_glob_foreach lock_file lock_file_full);
use PVE::Network;
use PVE::AccessControl;
use PVE::ProcFSTools;
+use PVE::LXC::Config;
use Time::HiRes qw (gettimeofday);
use Data::Dumper;
'--xattrs-include=security.capability',
'--warning=no-xattr-write' ];
-cfs_register_file('/lxc/', \&parse_pct_config, \&write_pct_config);
-
-my $rootfs_desc = {
- volume => {
- type => 'string',
- default_key => 1,
- format_description => 'volume',
- description => 'Volume, device or directory to mount into the container.',
- },
- backup => {
- type => 'boolean',
- format_description => '[1|0]',
- description => 'Whether to include the mountpoint in backups.',
- optional => 1,
- },
- size => {
- type => 'string',
- format => 'disk-size',
- format_description => 'DiskSize',
- description => 'Volume size (read only value).',
- optional => 1,
- },
-};
-
-PVE::JSONSchema::register_standard_option('pve-ct-rootfs', {
- type => 'string', format => $rootfs_desc,
- description => "Use volume as container root.",
- optional => 1,
-});
-
-PVE::JSONSchema::register_standard_option('pve-lxc-snapshot-name', {
- description => "The name of the snapshot.",
- type => 'string', format => 'pve-configid',
- maxLength => 40,
-});
-
-my $confdesc = {
- lock => {
- optional => 1,
- type => 'string',
- description => "Lock/unlock the VM.",
- enum => [qw(migrate backup snapshot rollback)],
- },
- onboot => {
- optional => 1,
- type => 'boolean',
- description => "Specifies whether a VM will be started during system bootup.",
- default => 0,
- },
- startup => get_standard_option('pve-startup-order'),
- template => {
- optional => 1,
- type => 'boolean',
- description => "Enable/disable Template.",
- default => 0,
- },
- arch => {
- optional => 1,
- type => 'string',
- enum => ['amd64', 'i386'],
- description => "OS architecture type.",
- default => 'amd64',
- },
- ostype => {
- optional => 1,
- type => 'string',
- enum => ['debian', 'ubuntu', 'centos', 'fedora', 'opensuse', 'archlinux'],
- description => "OS type. Corresponds to lxc setup scripts in /usr/share/lxc/config/<ostype>.common.conf.",
- },
- console => {
- optional => 1,
- type => 'boolean',
- description => "Attach a console device (/dev/console) to the container.",
- default => 1,
- },
- tty => {
- optional => 1,
- type => 'integer',
- description => "Specify the number of tty available to the container",
- minimum => 0,
- maximum => 6,
- default => 2,
- },
- cpulimit => {
- optional => 1,
- type => 'number',
- description => "Limit of CPU usage. Note if the computer has 2 CPUs, it has a total of '2' CPU time. Value '0' indicates no CPU limit.",
- minimum => 0,
- maximum => 128,
- default => 0,
- },
- cpuunits => {
- optional => 1,
- type => 'integer',
- description => "CPU weight for a VM. Argument is used in the kernel fair scheduler. The larger the number is, the more CPU time this VM gets. Number is relative to the weights of all the other running VMs.\n\nNOTE: You can disable fair-scheduler configuration by setting this to 0.",
- minimum => 0,
- maximum => 500000,
- default => 1024,
- },
- memory => {
- optional => 1,
- type => 'integer',
- description => "Amount of RAM for the VM in MB.",
- minimum => 16,
- default => 512,
- },
- swap => {
- optional => 1,
- type => 'integer',
- description => "Amount of SWAP for the VM in MB.",
- minimum => 0,
- default => 512,
- },
- hostname => {
- optional => 1,
- description => "Set a host name for the container.",
- type => 'string', format => 'dns-name',
- maxLength => 255,
- },
- description => {
- optional => 1,
- type => 'string',
- description => "Container description. Only used on the configuration web interface.",
- },
- searchdomain => {
- optional => 1,
- type => 'string', format => 'dns-name-list',
- description => "Sets DNS search domains for a container. Create will automatically use the setting from the host if you neither set searchdomain nor nameserver.",
- },
- nameserver => {
- optional => 1,
- type => 'string', format => 'address-list',
- description => "Sets DNS server IP address for a container. Create will automatically use the setting from the host if you neither set searchdomain nor nameserver.",
- },
- rootfs => get_standard_option('pve-ct-rootfs'),
- parent => {
- optional => 1,
- type => 'string', format => 'pve-configid',
- maxLength => 40,
- description => "Parent snapshot name. This is used internally, and should not be modified.",
- },
- snaptime => {
- optional => 1,
- description => "Timestamp for snapshots.",
- type => 'integer',
- minimum => 0,
- },
- cmode => {
- optional => 1,
- description => "Console mode. By default, the console command tries to open a connection to one of the available tty devices. By setting cmode to 'console' it tries to attach to /dev/console instead. If you set cmode to 'shell', it simply invokes a shell inside the container (no login).",
- type => 'string',
- enum => ['shell', 'console', 'tty'],
- default => 'tty',
- },
- protection => {
- optional => 1,
- type => 'boolean',
- description => "Sets the protection flag of the container. This will prevent the CT or CT's disk remove/update operation.",
- default => 0,
- },
- unprivileged => {
- optional => 1,
- type => 'boolean',
- description => "Makes the container run as unprivileged user. (Should not be modified manually.)",
- default => 0,
- },
-};
-
-my $valid_lxc_conf_keys = {
- 'lxc.include' => 1,
- 'lxc.arch' => 1,
- 'lxc.utsname' => 1,
- 'lxc.haltsignal' => 1,
- 'lxc.rebootsignal' => 1,
- 'lxc.stopsignal' => 1,
- 'lxc.init_cmd' => 1,
- 'lxc.network.type' => 1,
- 'lxc.network.flags' => 1,
- 'lxc.network.link' => 1,
- 'lxc.network.mtu' => 1,
- 'lxc.network.name' => 1,
- 'lxc.network.hwaddr' => 1,
- 'lxc.network.ipv4' => 1,
- 'lxc.network.ipv4.gateway' => 1,
- 'lxc.network.ipv6' => 1,
- 'lxc.network.ipv6.gateway' => 1,
- 'lxc.network.script.up' => 1,
- 'lxc.network.script.down' => 1,
- 'lxc.pts' => 1,
- 'lxc.console.logfile' => 1,
- 'lxc.console' => 1,
- 'lxc.tty' => 1,
- 'lxc.devttydir' => 1,
- 'lxc.hook.autodev' => 1,
- 'lxc.autodev' => 1,
- 'lxc.kmsg' => 1,
- 'lxc.mount' => 1,
- 'lxc.mount.entry' => 1,
- 'lxc.mount.auto' => 1,
- 'lxc.rootfs' => 1,
- 'lxc.rootfs.mount' => 1,
- 'lxc.rootfs.options' => 1,
- # lxc.cgroup.*
- 'lxc.cap.drop' => 1,
- 'lxc.cap.keep' => 1,
- 'lxc.aa_profile' => 1,
- 'lxc.aa_allow_incomplete' => 1,
- 'lxc.se_context' => 1,
- 'lxc.seccomp' => 1,
- 'lxc.id_map' => 1,
- 'lxc.hook.pre-start' => 1,
- 'lxc.hook.pre-mount' => 1,
- 'lxc.hook.mount' => 1,
- 'lxc.hook.start' => 1,
- 'lxc.hook.stop' => 1,
- 'lxc.hook.post-stop' => 1,
- 'lxc.hook.clone' => 1,
- 'lxc.hook.destroy' => 1,
- 'lxc.loglevel' => 1,
- 'lxc.logfile' => 1,
- 'lxc.start.auto' => 1,
- 'lxc.start.delay' => 1,
- 'lxc.start.order' => 1,
- 'lxc.group' => 1,
- 'lxc.environment' => 1,
- 'lxc.' => 1,
- 'lxc.' => 1,
- 'lxc.' => 1,
- 'lxc.' => 1,
-};
-
-my $netconf_desc = {
- type => {
- type => 'string',
- optional => 1,
- description => "Network interface type.",
- enum => [qw(veth)],
- },
- name => {
- type => 'string',
- format_description => 'String',
- description => 'Name of the network device as seen from inside the container. (lxc.network.name)',
- pattern => '[-_.\w\d]+',
- },
- bridge => {
- type => 'string',
- format_description => 'vmbr<Number>',
- description => 'Bridge to attach the network device to.',
- pattern => '[-_.\w\d]+',
- optional => 1,
- },
- hwaddr => {
- type => 'string',
- format_description => 'MAC',
- description => 'Bridge to attach the network device to. (lxc.network.hwaddr)',
- pattern => qr/(?:[a-f0-9]{2}:){5}[a-f0-9]{2}/i,
- optional => 1,
- },
- mtu => {
- type => 'integer',
- format_description => 'Number',
- description => 'Maximum transfer unit of the interface. (lxc.network.mtu)',
- minimum => 64, # minimum ethernet frame is 64 bytes
- optional => 1,
- },
- ip => {
- type => 'string',
- format => 'pve-ipv4-config',
- format_description => 'IPv4Format/CIDR',
- description => 'IPv4 address in CIDR format.',
- optional => 1,
- },
- gw => {
- type => 'string',
- format => 'ipv4',
- format_description => 'GatewayIPv4',
- description => 'Default gateway for IPv4 traffic.',
- optional => 1,
- },
- ip6 => {
- type => 'string',
- format => 'pve-ipv6-config',
- format_description => 'IPv6Format/CIDR',
- description => 'IPv6 address in CIDR format.',
- optional => 1,
- },
- gw6 => {
- type => 'string',
- format => 'ipv6',
- format_description => 'GatewayIPv6',
- description => 'Default gateway for IPv6 traffic.',
- optional => 1,
- },
- firewall => {
- type => 'boolean',
- format_description => '[1|0]',
- description => "Controls whether this interface's firewall rules should be used.",
- optional => 1,
- },
- tag => {
- type => 'integer',
- format_description => 'VlanNo',
- minimum => '2',
- maximum => '4094',
- description => "VLAN tag for this interface.",
- optional => 1,
- },
- trunks => {
- type => 'string',
- pattern => qr/\d+(?:;\d+)*/,
- format_description => 'vlanid[;vlanid...]',
- description => "VLAN ids to pass through the interface",
- optional => 1,
- },
-};
-PVE::JSONSchema::register_format('pve-lxc-network', $netconf_desc);
-
-my $MAX_LXC_NETWORKS = 10;
-for (my $i = 0; $i < $MAX_LXC_NETWORKS; $i++) {
- $confdesc->{"net$i"} = {
- optional => 1,
- type => 'string', format => $netconf_desc,
- description => "Specifies network interfaces for the container.",
- };
-}
-
-my $mp_desc = {
- %$rootfs_desc,
- mp => {
- type => 'string',
- format_description => 'Path',
- description => 'Path to the mountpoint as seen from inside the container.',
- },
-};
-PVE::JSONSchema::register_format('pve-ct-mountpoint', $mp_desc);
-
-my $unuseddesc = {
- optional => 1,
- type => 'string', format => 'pve-volume-id',
- description => "Reference to unused volumes.",
-};
-
-my $MAX_MOUNT_POINTS = 10;
-for (my $i = 0; $i < $MAX_MOUNT_POINTS; $i++) {
- $confdesc->{"mp$i"} = {
- optional => 1,
- type => 'string', format => $mp_desc,
- description => "Use volume as container mount point (experimental feature).",
- optional => 1,
- };
-}
-
-my $MAX_UNUSED_DISKS = $MAX_MOUNT_POINTS;
-for (my $i = 0; $i < $MAX_MOUNT_POINTS; $i++) {
- $confdesc->{"unused$i"} = $unuseddesc;
-}
-
-sub write_pct_config {
- my ($filename, $conf) = @_;
-
- delete $conf->{snapstate}; # just to be sure
-
- my $generate_raw_config = sub {
- my ($conf) = @_;
-
- my $raw = '';
-
- # add description as comment to top of file
- my $descr = $conf->{description} || '';
- foreach my $cl (split(/\n/, $descr)) {
- $raw .= '#' . PVE::Tools::encode_text($cl) . "\n";
- }
-
- foreach my $key (sort keys %$conf) {
- next if $key eq 'digest' || $key eq 'description' || $key eq 'pending' ||
- $key eq 'snapshots' || $key eq 'snapname' || $key eq 'lxc';
- my $value = $conf->{$key};
- die "detected invalid newline inside property '$key'\n" if $value =~ m/\n/;
- $raw .= "$key: $value\n";
- }
-
- if (my $lxcconf = $conf->{lxc}) {
- foreach my $entry (@$lxcconf) {
- my ($k, $v) = @$entry;
- $raw .= "$k: $v\n";
- }
- }
-
- return $raw;
- };
-
- my $raw = &$generate_raw_config($conf);
-
- foreach my $snapname (sort keys %{$conf->{snapshots}}) {
- $raw .= "\n[$snapname]\n";
- $raw .= &$generate_raw_config($conf->{snapshots}->{$snapname});
- }
-
- return $raw;
-}
-
-sub check_type {
- my ($key, $value) = @_;
-
- die "unknown setting '$key'\n" if !$confdesc->{$key};
-
- my $type = $confdesc->{$key}->{type};
-
- if (!defined($value)) {
- die "got undefined value\n";
- }
-
- if ($value =~ m/[\n\r]/) {
- die "property contains a line feed\n";
- }
-
- if ($type eq 'boolean') {
- return 1 if ($value eq '1') || ($value =~ m/^(on|yes|true)$/i);
- return 0 if ($value eq '0') || ($value =~ m/^(off|no|false)$/i);
- die "type check ('boolean') failed - got '$value'\n";
- } elsif ($type eq 'integer') {
- return int($1) if $value =~ m/^(\d+)$/;
- die "type check ('integer') failed - got '$value'\n";
- } elsif ($type eq 'number') {
- return $value if $value =~ m/^(\d+)(\.\d+)?$/;
- die "type check ('number') failed - got '$value'\n";
- } elsif ($type eq 'string') {
- if (my $fmt = $confdesc->{$key}->{format}) {
- PVE::JSONSchema::check_format($fmt, $value);
- return $value;
- }
- return $value;
- } else {
- die "internal error"
- }
-}
-
-sub parse_pct_config {
- my ($filename, $raw) = @_;
-
- return undef if !defined($raw);
-
- my $res = {
- digest => Digest::SHA::sha1_hex($raw),
- snapshots => {},
- };
-
- $filename =~ m|/lxc/(\d+).conf$|
- || die "got strange filename '$filename'";
-
- my $vmid = $1;
-
- my $conf = $res;
- my $descr = '';
- my $section = '';
-
- my @lines = split(/\n/, $raw);
- foreach my $line (@lines) {
- next if $line =~ m/^\s*$/;
-
- if ($line =~ m/^\[([a-z][a-z0-9_\-]+)\]\s*$/i) {
- $section = $1;
- $conf->{description} = $descr if $descr;
- $descr = '';
- $conf = $res->{snapshots}->{$section} = {};
- next;
- }
-
- if ($line =~ m/^\#(.*)\s*$/) {
- $descr .= PVE::Tools::decode_text($1) . "\n";
- next;
- }
-
- if ($line =~ m/^(lxc\.[a-z0-9_\-\.]+)(:|\s*=)\s*(.*?)\s*$/) {
- my $key = $1;
- my $value = $3;
- if ($valid_lxc_conf_keys->{$key} || $key =~ m/^lxc\.cgroup\./) {
- push @{$conf->{lxc}}, [$key, $value];
- } else {
- warn "vm $vmid - unable to parse config: $line\n";
- }
- } elsif ($line =~ m/^(description):\s*(.*\S)\s*$/) {
- $descr .= PVE::Tools::decode_text($2);
- } elsif ($line =~ m/snapstate:\s*(prepare|delete)\s*$/) {
- $conf->{snapstate} = $1;
- } elsif ($line =~ m/^([a-z][a-z_]*\d*):\s*(\S.*)\s*$/) {
- my $key = $1;
- my $value = $2;
- eval { $value = check_type($key, $value); };
- warn "vm $vmid - unable to parse value of '$key' - $@" if $@;
- $conf->{$key} = $value;
- } else {
- warn "vm $vmid - unable to parse config: $line\n";
- }
- }
-
- $conf->{description} = $descr if $descr;
-
- delete $res->{snapstate}; # just to be sure
-
- return $res;
-}
-
sub config_list {
my $vmlist = PVE::Cluster::get_vmlist();
my $res = {};
return $res;
}
-sub cfs_config_path {
- my ($vmid, $node) = @_;
-
- $node = $nodename if !$node;
- return "nodes/$node/lxc/$vmid.conf";
-}
-
-sub config_file {
- my ($vmid, $node) = @_;
-
- my $cfspath = cfs_config_path($vmid, $node);
- return "/etc/pve/$cfspath";
-}
-
-sub load_config {
- my ($vmid, $node) = @_;
-
- $node = $nodename if !$node;
- my $cfspath = cfs_config_path($vmid, $node);
-
- my $conf = PVE::Cluster::cfs_read_file($cfspath);
- die "container $vmid does not exist\n" if !defined($conf);
-
- return $conf;
-}
-
-sub create_config {
- my ($vmid, $conf) = @_;
-
- my $dir = "/etc/pve/nodes/$nodename/lxc";
- mkdir $dir;
-
- write_config($vmid, $conf);
-}
-
sub destroy_config {
my ($vmid) = @_;
- unlink config_file($vmid, $nodename);
-}
-
-sub write_config {
- my ($vmid, $conf) = @_;
-
- my $cfspath = cfs_config_path($vmid);
-
- PVE::Cluster::cfs_write_file($cfspath, $conf);
-}
-
-# flock: we use one file handle per process, so lock file
-# can be called multiple times and will succeed for the same process.
-
-my $lock_handles = {};
-my $lockdir = "/run/lock/lxc";
-
-sub lock_filename {
- my ($vmid) = @_;
-
- return "$lockdir/pve-config-${vmid}.lock";
-}
-
-sub lock_aquire {
- my ($vmid, $timeout) = @_;
-
- $timeout = 10 if !$timeout;
- my $mode = LOCK_EX;
-
- my $filename = lock_filename($vmid);
-
- mkdir $lockdir if !-d $lockdir;
-
- my $lock_func = sub {
- if (!$lock_handles->{$$}->{$filename}) {
- my $fh = new IO::File(">>$filename") ||
- die "can't open file - $!\n";
- $lock_handles->{$$}->{$filename} = { fh => $fh, refcount => 0};
- }
-
- if (!flock($lock_handles->{$$}->{$filename}->{fh}, $mode |LOCK_NB)) {
- print STDERR "trying to aquire lock...";
- my $success;
- while(1) {
- $success = flock($lock_handles->{$$}->{$filename}->{fh}, $mode);
- # try again on EINTR (see bug #273)
- if ($success || ($! != EINTR)) {
- last;
- }
- }
- if (!$success) {
- print STDERR " failed\n";
- die "can't aquire lock - $!\n";
- }
-
- print STDERR " OK\n";
- }
-
- $lock_handles->{$$}->{$filename}->{refcount}++;
- };
-
- eval { PVE::Tools::run_with_timeout($timeout, $lock_func); };
- my $err = $@;
- if ($err) {
- die "can't lock file '$filename' - $err";
- }
-}
-
-sub lock_release {
- my ($vmid) = @_;
-
- my $filename = lock_filename($vmid);
-
- if (my $fh = $lock_handles->{$$}->{$filename}->{fh}) {
- my $refcount = --$lock_handles->{$$}->{$filename}->{refcount};
- if ($refcount <= 0) {
- $lock_handles->{$$}->{$filename} = undef;
- close ($fh);
- }
- }
-}
-
-sub lock_container {
- my ($vmid, $timeout, $code, @param) = @_;
-
- my $res;
-
- lock_aquire($vmid, $timeout);
- eval { $res = &$code(@param) };
- my $err = $@;
- lock_release($vmid);
-
- die $err if $err;
-
- return $res;
-}
-
-sub option_exists {
- my ($name) = @_;
-
- return defined($confdesc->{$name});
-}
-
-# add JSON properties for create and set function
-sub json_config_properties {
- my $prop = shift;
-
- foreach my $opt (keys %$confdesc) {
- next if $opt eq 'parent' || $opt eq 'snaptime';
- next if $prop->{$opt};
- $prop->{$opt} = $confdesc->{$opt};
- }
-
- return $prop;
-}
-
-sub json_config_properties_no_rootfs {
- my $prop = shift;
-
- foreach my $opt (keys %$confdesc) {
- next if $prop->{$opt};
- next if $opt eq 'parent' || $opt eq 'snaptime' || $opt eq 'rootfs';
- $prop->{$opt} = $confdesc->{$opt};
- }
-
- return $prop;
+ unlink PVE::LXC::Config->config_file($vmid, $nodename);
}
# container status helpers
return $res if !$fh;
while (defined(my $line = <$fh>)) {
- if ($line =~ m/^[a-f0-9]+:\s\S+\s\S+\s\S+\s\S+\s\S+\s\d+\s(\S+)$/) {
+ if ($line =~ m/^[a-f0-9]+:\s+\S+\s+\S+\s+\S+\s+\S+\s+\S+\s+\d+\s+(\S+)$/) {
my $path = $1;
if ($path =~ m!^@/var/lib/lxc/(\d+)/command$!) {
$res->{$1} = 1;
$d->{status} = $d->{pid} ? 'running' : 'stopped';
- my $cfspath = cfs_config_path($vmid);
+ my $cfspath = PVE::LXC::Config->cfs_config_path($vmid);
my $conf = PVE::Cluster::cfs_read_file($cfspath) || {};
$d->{name} = $conf->{'hostname'} || "CT$vmid";
$d->{cpus} = $conf->{cpulimit} || $cpucount;
+ $d->{lock} = $conf->{lock} || '';
+
if ($d->{pid}) {
my $res = get_container_disk_usage($vmid, $d->{pid});
$d->{disk} = $res->{used};
$d->{disk} = 0;
# use 4GB by default ??
if (my $rootfs = $conf->{rootfs}) {
- my $rootinfo = parse_ct_rootfs($rootfs);
+ my $rootinfo = PVE::LXC::Config->parse_ct_rootfs($rootfs);
$d->{maxdisk} = int(($rootinfo->{size} || 4)*1024*1024)*1024;
} else {
$d->{maxdisk} = 4*1024*1024*1024;
$d->{diskread} = 0;
$d->{diskwrite} = 0;
- $d->{template} = is_template($conf);
+ $d->{template} = PVE::LXC::Config->is_template($conf);
}
foreach my $vmid (keys %$list) {
return $list;
}
-sub classify_mountpoint {
- my ($vol) = @_;
- if ($vol =~ m!^/!) {
- return 'device' if $vol =~ m!^/dev/!;
- return 'bind';
- }
- return 'volume';
-}
-
-my $parse_ct_mountpoint_full = sub {
- my ($desc, $data, $noerr) = @_;
-
- $data //= '';
-
- my $res;
- eval { $res = PVE::JSONSchema::parse_property_string($desc, $data) };
- if ($@) {
- return undef if $noerr;
- die $@;
- }
-
- if (defined(my $size = $res->{size})) {
- $size = PVE::JSONSchema::parse_size($size);
- if (!defined($size)) {
- return undef if $noerr;
- die "invalid size: $size\n";
- }
- $res->{size} = $size;
- }
-
- $res->{type} = classify_mountpoint($res->{volume});
-
- return $res;
-};
-
-sub parse_ct_rootfs {
- my ($data, $noerr) = @_;
-
- my $res = &$parse_ct_mountpoint_full($rootfs_desc, $data, $noerr);
-
- $res->{mp} = '/' if defined($res);
-
- return $res;
-}
-
-sub parse_ct_mountpoint {
- my ($data, $noerr) = @_;
-
- return &$parse_ct_mountpoint_full($mp_desc, $data, $noerr);
-}
-
-sub print_ct_mountpoint {
- my ($info, $nomp) = @_;
- my $skip = [ 'type' ];
- push @$skip, 'mp' if $nomp;
- return PVE::JSONSchema::print_property_string($info, $mp_desc, $skip);
-}
-
-sub print_lxc_network {
- my $net = shift;
- return PVE::JSONSchema::print_property_string($net, $netconf_desc);
-}
-
-sub parse_lxc_network {
- my ($data) = @_;
-
- my $res = {};
-
- return $res if !$data;
-
- $res = PVE::JSONSchema::parse_property_string($netconf_desc, $data);
-
- $res->{type} = 'veth';
- $res->{hwaddr} = PVE::Tools::random_ether_addr() if !$res->{hwaddr};
-
- return $res;
-}
-
sub read_cgroup_value {
my ($group, $vmid, $name, $full) = @_;
die "unable to parse ipv4 address/mask\n";
}
-sub check_lock {
- my ($conf) = @_;
-
- die "VM is locked ($conf->{'lock'})\n" if $conf->{'lock'};
-}
-
-sub check_protection {
- my ($vm_conf, $err_msg) = @_;
-
- if ($vm_conf->{protection}) {
- die "$err_msg - protection mode enabled\n";
- }
-}
sub update_lxc_config {
my ($storage_cfg, $vmid, $conf) = @_;
my $custom_idmap = grep { $_->[0] eq 'lxc.id_map' } @{$conf->{lxc}};
my $ostype = $conf->{ostype} || die "missing 'ostype' - internal error";
- if ($ostype =~ /^(?:debian | ubuntu | centos | fedora | opensuse | archlinux)$/x) {
- $raw .= "lxc.include = /usr/share/lxc/config/$ostype.common.conf\n";
+ if ($ostype =~ /^(?:debian | ubuntu | centos | fedora | opensuse | archlinux | alpine | unmanaged)$/x) {
+ my $inc ="/usr/share/lxc/config/$ostype.common.conf";
+ $inc ="/usr/share/lxc/config/common.conf" if !-f $inc;
+ $raw .= "lxc.include = $inc\n";
if ($unprivileged || $custom_idmap) {
- $raw .= "lxc.include = /usr/share/lxc/config/$ostype.userns.conf\n"
+ $inc = "/usr/share/lxc/config/$ostype.userns.conf";
+ $inc = "/usr/share/lxc/config/userns.conf" if !-f $inc;
+ $raw .= "lxc.include = $inc\n"
}
} else {
die "implement me (ostype $ostype)";
}
+ # WARNING: DO NOT REMOVE this without making sure that loop device nodes
+ # cannot be exposed to the container with r/w access (cgroup perms).
+ # When this is enabled mounts will still remain in the monitor's namespace
+ # after the container unmounted them and thus will not detach from their
+ # files while the container is running!
$raw .= "lxc.monitor.unshare = 1\n";
# Should we read them from /etc/subuid?
$raw .= "lxc.id_map = g 0 100000 65536\n";
}
- if (!has_dev_console($conf)) {
+ if (!PVE::LXC::Config->has_dev_console($conf)) {
$raw .= "lxc.console = none\n";
$raw .= "lxc.cgroup.devices.deny = c 5:1 rwm\n";
}
- my $ttycount = get_tty_count($conf);
+ my $ttycount = PVE::LXC::Config->get_tty_count($conf);
$raw .= "lxc.tty = $ttycount\n";
# some init scripts expect a linux terminal (turnkey).
my $shares = $conf->{cpuunits} || 1024;
$raw .= "lxc.cgroup.cpu.shares = $shares\n";
- my $mountpoint = parse_ct_rootfs($conf->{rootfs});
+ my $mountpoint = PVE::LXC::Config->parse_ct_rootfs($conf->{rootfs});
$raw .= "lxc.rootfs = $dir/rootfs\n";
foreach my $k (keys %$conf) {
next if $k !~ m/^net(\d+)$/;
my $ind = $1;
- my $d = parse_lxc_network($conf->{$k});
+ my $d = PVE::LXC::Config->parse_lxc_network($conf->{$k});
$netcount++;
$raw .= "lxc.network.type = veth\n";
$raw .= "lxc.network.veth.pair = veth${vmid}i${ind}\n";
return join(' ', @list);
}
-sub add_unused_volume {
- my ($config, $volid) = @_;
-
- my $key;
- for (my $ind = $MAX_UNUSED_DISKS - 1; $ind >= 0; $ind--) {
- my $test = "unused$ind";
- if (my $vid = $config->{$test}) {
- return if $vid eq $volid; # do not add duplicates
- } else {
- $key = $test;
- }
- }
-
- die "Too many unused volumes - please delete them first.\n" if !$key;
-
- $config->{$key} = $volid;
-
- return $key;
-}
-
-sub update_pct_config {
- my ($vmid, $conf, $running, $param, $delete) = @_;
-
- my @nohotplug;
-
- my $new_disks = 0;
- my @deleted_volumes;
-
- my $rootdir;
- if ($running) {
- my $pid = find_lxc_pid($vmid);
- $rootdir = "/proc/$pid/root";
- }
-
- my $hotplug_error = sub {
- if ($running) {
- push @nohotplug, @_;
- return 1;
- } else {
- return 0;
- }
- };
-
- if (defined($delete)) {
- foreach my $opt (@$delete) {
- if (!exists($conf->{$opt})) {
- warn "no such option: $opt\n";
- next;
- }
-
- if ($opt eq 'hostname' || $opt eq 'memory' || $opt eq 'rootfs') {
- die "unable to delete required option '$opt'\n";
- } elsif ($opt eq 'swap') {
- delete $conf->{$opt};
- write_cgroup_value("memory", $vmid, "memory.memsw.limit_in_bytes", -1);
- } elsif ($opt eq 'description' || $opt eq 'onboot' || $opt eq 'startup') {
- delete $conf->{$opt};
- } elsif ($opt eq 'nameserver' || $opt eq 'searchdomain' ||
- $opt eq 'tty' || $opt eq 'console' || $opt eq 'cmode') {
- next if $hotplug_error->($opt);
- delete $conf->{$opt};
- } elsif ($opt =~ m/^net(\d)$/) {
- delete $conf->{$opt};
- next if !$running;
- my $netid = $1;
- PVE::Network::veth_delete("veth${vmid}i$netid");
- } elsif ($opt eq 'protection') {
- delete $conf->{$opt};
- } elsif ($opt =~ m/^unused(\d+)$/) {
- next if $hotplug_error->($opt);
- check_protection($conf, "can't remove CT $vmid drive '$opt'");
- push @deleted_volumes, $conf->{$opt};
- delete $conf->{$opt};
- } elsif ($opt =~ m/^mp(\d+)$/) {
- next if $hotplug_error->($opt);
- check_protection($conf, "can't remove CT $vmid drive '$opt'");
- my $mountpoint = parse_ct_mountpoint($conf->{$opt});
- if ($mountpoint->{type} eq 'volume') {
- add_unused_volume($conf, $mountpoint->{volume})
- }
- delete $conf->{$opt};
- } elsif ($opt eq 'unprivileged') {
- die "unable to delete read-only option: '$opt'\n";
- } else {
- die "implement me (delete: $opt)"
- }
- write_config($vmid, $conf) if $running;
- }
- }
-
- # There's no separate swap size to configure, there's memory and "total"
- # memory (iow. memory+swap). This means we have to change them together.
- my $wanted_memory = PVE::Tools::extract_param($param, 'memory');
- my $wanted_swap = PVE::Tools::extract_param($param, 'swap');
- if (defined($wanted_memory) || defined($wanted_swap)) {
-
- $wanted_memory //= ($conf->{memory} || 512);
- $wanted_swap //= ($conf->{swap} || 0);
-
- my $total = $wanted_memory + $wanted_swap;
- if ($running) {
- write_cgroup_value("memory", $vmid, "memory.limit_in_bytes", int($wanted_memory*1024*1024));
- write_cgroup_value("memory", $vmid, "memory.memsw.limit_in_bytes", int($total*1024*1024));
- }
- $conf->{memory} = $wanted_memory;
- $conf->{swap} = $wanted_swap;
-
- write_config($vmid, $conf) if $running;
- }
-
- foreach my $opt (keys %$param) {
- my $value = $param->{$opt};
- if ($opt eq 'hostname') {
- $conf->{$opt} = $value;
- } elsif ($opt eq 'onboot') {
- $conf->{$opt} = $value ? 1 : 0;
- } elsif ($opt eq 'startup') {
- $conf->{$opt} = $value;
- } elsif ($opt eq 'tty' || $opt eq 'console' || $opt eq 'cmode') {
- next if $hotplug_error->($opt);
- $conf->{$opt} = $value;
- } elsif ($opt eq 'nameserver') {
- next if $hotplug_error->($opt);
- my $list = verify_nameserver_list($value);
- $conf->{$opt} = $list;
- } elsif ($opt eq 'searchdomain') {
- next if $hotplug_error->($opt);
- my $list = verify_searchdomain_list($value);
- $conf->{$opt} = $list;
- } elsif ($opt eq 'cpulimit') {
- next if $hotplug_error->($opt); # FIXME: hotplug
- $conf->{$opt} = $value;
- } elsif ($opt eq 'cpuunits') {
- $conf->{$opt} = $value;
- write_cgroup_value("cpu", $vmid, "cpu.shares", $value);
- } elsif ($opt eq 'description') {
- $conf->{$opt} = PVE::Tools::encode_text($value);
- } elsif ($opt =~ m/^net(\d+)$/) {
- my $netid = $1;
- my $net = parse_lxc_network($value);
- if (!$running) {
- $conf->{$opt} = print_lxc_network($net);
- } else {
- update_net($vmid, $conf, $opt, $net, $netid, $rootdir);
- }
- } elsif ($opt eq 'protection') {
- $conf->{$opt} = $value ? 1 : 0;
- } elsif ($opt =~ m/^mp(\d+)$/) {
- next if $hotplug_error->($opt);
- check_protection($conf, "can't update CT $vmid drive '$opt'");
- $conf->{$opt} = $value;
- $new_disks = 1;
- } elsif ($opt eq 'rootfs') {
- check_protection($conf, "can't update CT $vmid drive '$opt'");
- die "implement me: $opt";
- } elsif ($opt eq 'unprivileged') {
- die "unable to modify read-only option: '$opt'\n";
- } else {
- die "implement me: $opt";
- }
- write_config($vmid, $conf) if $running;
- }
-
- if (@deleted_volumes) {
- my $storage_cfg = PVE::Storage::config();
- foreach my $volume (@deleted_volumes) {
- delete_mountpoint_volume($storage_cfg, $vmid, $volume);
- }
- }
-
- if ($new_disks) {
- my $storage_cfg = PVE::Storage::config();
- create_disks($storage_cfg, $vmid, $conf, $conf);
- }
-
- # This should be the last thing we do here
- if ($running && scalar(@nohotplug)) {
- die "unable to modify " . join(',', @nohotplug) . " while container is running\n";
- }
-}
-
-sub has_dev_console {
- my ($conf) = @_;
-
- return !(defined($conf->{console}) && !$conf->{console});
-}
-
-sub get_tty_count {
- my ($conf) = @_;
-
- return $conf->{tty} // $confdesc->{tty}->{default};
-}
-
-sub get_cmode {
- my ($conf) = @_;
-
- return $conf->{cmode} // $confdesc->{cmode}->{default};
-}
-
sub get_console_command {
my ($vmid, $conf) = @_;
- my $cmode = get_cmode($conf);
+ my $cmode = PVE::LXC::Config->get_cmode($conf);
if ($cmode eq 'console') {
return ['lxc-console', '-n', $vmid, '-t', 0];
# return data from net0
return undef if !defined($conf->{net0});
- my $net = parse_lxc_network($conf->{net0});
+ my $net = PVE::LXC::Config->parse_lxc_network($conf->{net0});
my $ipv4 = $net->{ip};
if ($ipv4) {
sub delete_mountpoint_volume {
my ($storage_cfg, $vmid, $volume) = @_;
- return if classify_mountpoint($volume) ne 'volume';
+ return if PVE::LXC::Config->classify_mountpoint($volume) ne 'volume';
my ($vtype, $name, $owner) = PVE::Storage::parse_volname($storage_cfg, $volume);
PVE::Storage::vdisk_free($storage_cfg, $volume) if $vmid == $owner;
sub destroy_lxc_container {
my ($storage_cfg, $vmid, $conf) = @_;
- foreach_mountpoint($conf, sub {
+ PVE::LXC::Config->foreach_mountpoint($conf, sub {
my ($ms, $mountpoint) = @_;
delete_mountpoint_volume($storage_cfg, $vmid, $mountpoint->{volume});
});
eval {
if (!$keepActive) {
- my $vollist = get_vm_volumes($conf);
+ my $vollist = PVE::LXC::Config->get_vm_volumes($conf);
PVE::Storage::deactivate_volumes($storage_cfg, $vollist);
}
};
my $eth = $newnet->{name};
if (my $oldnetcfg = $conf->{$opt}) {
- my $oldnet = parse_lxc_network($oldnetcfg);
+ my $oldnet = PVE::LXC::Config->parse_lxc_network($oldnetcfg);
if (&$safe_string_ne($oldnet->{hwaddr}, $newnet->{hwaddr}) ||
&$safe_string_ne($oldnet->{name}, $newnet->{name})) {
PVE::Network::veth_delete($veth);
delete $conf->{$opt};
- write_config($vmid, $conf);
+ PVE::LXC::Config->write_config($vmid, $conf);
hotplug_net($vmid, $conf, $opt, $newnet, $netid);
- } elsif (&$safe_string_ne($oldnet->{bridge}, $newnet->{bridge}) ||
- &$safe_num_ne($oldnet->{tag}, $newnet->{tag}) ||
- &$safe_num_ne($oldnet->{firewall}, $newnet->{firewall})) {
+ } else {
+ if (&$safe_string_ne($oldnet->{bridge}, $newnet->{bridge}) ||
+ &$safe_num_ne($oldnet->{tag}, $newnet->{tag}) ||
+ &$safe_num_ne($oldnet->{firewall}, $newnet->{firewall})) {
if ($oldnet->{bridge}) {
PVE::Network::tap_unplug($veth);
foreach (qw(bridge tag firewall)) {
delete $oldnet->{$_};
}
- $conf->{$opt} = print_lxc_network($oldnet);
- write_config($vmid, $conf);
+ $conf->{$opt} = PVE::LXC::Config->print_lxc_network($oldnet);
+ PVE::LXC::Config->write_config($vmid, $conf);
}
- PVE::Network::tap_plug($veth, $newnet->{bridge}, $newnet->{tag}, $newnet->{firewall}, $newnet->{trunks});
- foreach (qw(bridge tag firewall)) {
+ PVE::Network::tap_plug($veth, $newnet->{bridge}, $newnet->{tag}, $newnet->{firewall}, $newnet->{trunks}, $newnet->{rate});
+ # This includes the rate:
+ foreach (qw(bridge tag firewall rate)) {
$oldnet->{$_} = $newnet->{$_} if $newnet->{$_};
}
- $conf->{$opt} = print_lxc_network($oldnet);
- write_config($vmid, $conf);
+ } elsif (&$safe_string_ne($oldnet->{rate}, $newnet->{rate})) {
+ # Rate can be applied on its own but any change above needs to
+ # include the rate in tap_plug since OVS resets everything.
+ PVE::Network::tap_rate_limit($veth, $newnet->{rate});
+ $oldnet->{rate} = $newnet->{rate}
+ }
+ $conf->{$opt} = PVE::LXC::Config->print_lxc_network($oldnet);
+ PVE::LXC::Config->write_config($vmid, $conf);
}
} else {
hotplug_net($vmid, $conf, $opt, $newnet, $netid);
my $eth = $newnet->{name};
PVE::Network::veth_create($veth, $vethpeer, $newnet->{bridge}, $newnet->{hwaddr});
- PVE::Network::tap_plug($veth, $newnet->{bridge}, $newnet->{tag}, $newnet->{firewall}, $newnet->{trunks});
+ PVE::Network::tap_plug($veth, $newnet->{bridge}, $newnet->{tag}, $newnet->{firewall}, $newnet->{trunks}, $newnet->{rate});
# attach peer in container
my $cmd = ['lxc-device', '-n', $vmid, 'add', $vethpeer, "$eth" ];
foreach (qw(bridge tag firewall hwaddr name)) {
$done->{$_} = $newnet->{$_} if $newnet->{$_};
}
- $conf->{$opt} = print_lxc_network($done);
+ $conf->{$opt} = PVE::LXC::Config->print_lxc_network($done);
- write_config($vmid, $conf);
+ PVE::LXC::Config->write_config($vmid, $conf);
}
sub update_ipconfig {
my $lxc_setup = PVE::LXC::Setup->new($conf, $rootdir);
- my $optdata = parse_lxc_network($conf->{$opt});
+ my $optdata = PVE::LXC::Config->parse_lxc_network($conf->{$opt});
my $deleted = [];
my $added = [];
my $nscmd = sub {
delete $optdata->{$property};
}
}
- $conf->{$opt} = print_lxc_network($optdata);
- write_config($vmid, $conf);
+ $conf->{$opt} = PVE::LXC::Config->print_lxc_network($optdata);
+ PVE::LXC::Config->write_config($vmid, $conf);
$lxc_setup->setup_network($conf);
};
}
-# Internal snapshots
-
-# NOTE: Snapshot create/delete involves several non-atomic
-# actions, and can take a long time.
-# So we try to avoid locking the file and use the 'lock' variable
-# inside the config file instead.
-
-my $snapshot_copy_config = sub {
- my ($source, $dest) = @_;
-
- foreach my $k (keys %$source) {
- next if $k eq 'snapshots';
- next if $k eq 'snapstate';
- next if $k eq 'snaptime';
- next if $k eq 'vmstate';
- next if $k eq 'lock';
- next if $k eq 'digest';
- next if $k eq 'description';
-
- $dest->{$k} = $source->{$k};
- }
-};
-
-my $snapshot_prepare = sub {
- my ($vmid, $snapname, $comment) = @_;
-
- my $snap;
-
- my $updatefn = sub {
-
- my $conf = load_config($vmid);
-
- die "you can't take a snapshot if it's a template\n"
- if is_template($conf);
-
- check_lock($conf);
-
- $conf->{lock} = 'snapshot';
-
- die "snapshot name '$snapname' already used\n"
- if defined($conf->{snapshots}->{$snapname});
-
- my $storecfg = PVE::Storage::config();
- die "snapshot feature is not available\n" if !has_feature('snapshot', $conf, $storecfg);
-
- $snap = $conf->{snapshots}->{$snapname} = {};
-
- &$snapshot_copy_config($conf, $snap);
-
- $snap->{'snapstate'} = "prepare";
- $snap->{'snaptime'} = time();
- $snap->{'description'} = $comment if $comment;
- $conf->{snapshots}->{$snapname} = $snap;
-
- write_config($vmid, $conf);
- };
-
- lock_container($vmid, 10, $updatefn);
-
- return $snap;
+my $enter_namespace = sub {
+ my ($vmid, $pid, $which, $type) = @_;
+ sysopen my $fd, "/proc/$pid/ns/$which", O_RDONLY
+ or die "failed to open $which namespace of container $vmid: $!\n";
+ PVE::Tools::setns(fileno($fd), $type)
+ or die "failed to enter $which namespace of container $vmid: $!\n";
+ close $fd;
};
-my $snapshot_commit = sub {
- my ($vmid, $snapname) = @_;
-
- my $updatefn = sub {
-
- my $conf = load_config($vmid);
-
- die "missing snapshot lock\n"
- if !($conf->{lock} && $conf->{lock} eq 'snapshot');
-
- die "snapshot '$snapname' does not exist\n"
- if !defined($conf->{snapshots}->{$snapname});
+my $do_syncfs = sub {
+ my ($vmid, $pid, $socket) = @_;
- die "wrong snapshot state\n"
- if !($conf->{snapshots}->{$snapname}->{'snapstate'} &&
- $conf->{snapshots}->{$snapname}->{'snapstate'} eq "prepare");
-
- delete $conf->{snapshots}->{$snapname}->{'snapstate'};
- delete $conf->{lock};
- $conf->{parent} = $snapname;
-
- write_config($vmid, $conf);
- };
-
- lock_container($vmid, 10 ,$updatefn);
-};
-
-sub has_feature {
- my ($feature, $conf, $storecfg, $snapname) = @_;
-
- my $err;
+ &$enter_namespace($vmid, $pid, 'mnt', PVE::Tools::CLONE_NEWNS);
- foreach_mountpoint($conf, sub {
- my ($ms, $mountpoint) = @_;
-
- return if $err; # skip further test
-
- $err = 1 if !PVE::Storage::volume_has_feature($storecfg, $feature, $mountpoint->{volume}, $snapname);
-
- # TODO: implement support for mountpoints
- die "unable to handle mountpoint '$ms' - feature not implemented\n"
- if $ms ne 'rootfs';
- });
-
- return $err ? 0 : 1;
-}
-
-sub snapshot_create {
- my ($vmid, $snapname, $comment) = @_;
-
- my $snap = &$snapshot_prepare($vmid, $snapname, $comment);
-
- my $conf = load_config($vmid);
-
- my $running = check_running($vmid);
-
- my $unfreeze = 0;
-
- eval {
- if ($running) {
- PVE::Tools::run_command(['/usr/bin/lxc-freeze', '-n', $vmid]);
- $unfreeze = 1;
- PVE::Tools::run_command(['/bin/sync']);
- };
+ # Tell the parent process to start reading our /proc/mounts
+ print {$socket} "go\n";
+ $socket->flush();
- my $storecfg = PVE::Storage::config();
- my $rootinfo = parse_ct_rootfs($conf->{rootfs});
- my $volid = $rootinfo->{volume};
+ # Receive /proc/self/mounts
+ my $mountdata = do { local $/ = undef; <$socket> };
+ close $socket;
- PVE::Storage::volume_snapshot($storecfg, $volid, $snapname);
- &$snapshot_commit($vmid, $snapname);
- };
- my $err = $@;
-
- if ($unfreeze) {
- eval { PVE::Tools::run_command(['/usr/bin/lxc-unfreeze', '-n', $vmid]); };
+ # Now sync all mountpoints...
+ my $mounts = PVE::ProcFSTools::parse_mounts($mountdata);
+ foreach my $mp (@$mounts) {
+ my ($what, $dir, $fs) = @$mp;
+ next if $fs eq 'fuse.lxcfs';
+ eval { PVE::Tools::sync_mountpoint($dir); };
warn $@ if $@;
}
-
- if ($err) {
- snapshot_delete($vmid, $snapname, 1);
- die "$err\n";
- }
-}
-
-sub snapshot_delete {
- my ($vmid, $snapname, $force) = @_;
-
- my $snap;
-
- my $conf;
-
- my $updatefn = sub {
-
- $conf = load_config($vmid);
-
- die "you can't delete a snapshot if vm is a template\n"
- if is_template($conf);
-
- $snap = $conf->{snapshots}->{$snapname};
-
- check_lock($conf);
-
- die "snapshot '$snapname' does not exist\n" if !defined($snap);
-
- $snap->{snapstate} = 'delete';
-
- write_config($vmid, $conf);
- };
-
- lock_container($vmid, 10, $updatefn);
-
- my $storecfg = PVE::Storage::config();
-
- my $del_snap = sub {
-
- check_lock($conf);
-
- if ($conf->{parent} eq $snapname) {
- if ($conf->{snapshots}->{$snapname}->{snapname}) {
- $conf->{parent} = $conf->{snapshots}->{$snapname}->{parent};
- } else {
- delete $conf->{parent};
- }
- }
-
- delete $conf->{snapshots}->{$snapname};
+};
- write_config($vmid, $conf);
- };
+sub sync_container_namespace {
+ my ($vmid) = @_;
+ my $pid = find_lxc_pid($vmid);
- my $rootfs = $conf->{snapshots}->{$snapname}->{rootfs};
- my $rootinfo = parse_ct_rootfs($rootfs);
- my $volid = $rootinfo->{volume};
+ # SOCK_DGRAM is nicer for barriers but cannot be slurped
+ socketpair my $pfd, my $cfd, AF_UNIX, SOCK_STREAM, PF_UNSPEC
+ or die "failed to create socketpair: $!\n";
- eval {
- PVE::Storage::volume_snapshot_delete($storecfg, $volid, $snapname);
- };
- my $err = $@;
+ my $child = fork();
+ die "fork failed: $!\n" if !defined($child);
- if(!$err || ($err && $force)) {
- lock_container($vmid, 10, $del_snap);
- if ($err) {
- die "Can't delete snapshot: $vmid $snapname $err\n";
+ if (!$child) {
+ eval {
+ close $pfd;
+ &$do_syncfs($vmid, $pid, $cfd);
+ };
+ if (my $err = $@) {
+ warn $err;
+ POSIX::_exit(1);
}
+ POSIX::_exit(0);
}
-}
-
-sub snapshot_rollback {
- my ($vmid, $snapname) = @_;
-
- my $storecfg = PVE::Storage::config();
-
- my $conf = load_config($vmid);
-
- die "you can't rollback if vm is a template\n" if is_template($conf);
-
- my $snap = $conf->{snapshots}->{$snapname};
-
- die "snapshot '$snapname' does not exist\n" if !defined($snap);
-
- my $rootfs = $snap->{rootfs};
- my $rootinfo = parse_ct_rootfs($rootfs);
- my $volid = $rootinfo->{volume};
-
- PVE::Storage::volume_rollback_is_possible($storecfg, $volid, $snapname);
-
- my $updatefn = sub {
-
- die "unable to rollback to incomplete snapshot (snapstate = $snap->{snapstate})\n"
- if $snap->{snapstate};
-
- check_lock($conf);
-
- system("lxc-stop -n $vmid --kill") if check_running($vmid);
+ close $cfd;
+ my $go = <$pfd>;
+ die "failed to enter container namespace\n" if $go ne "go\n";
- die "unable to rollback vm $vmid: vm is running\n"
- if check_running($vmid);
+ open my $mounts, '<', "/proc/$child/mounts"
+ or die "failed to open container's /proc/mounts: $!\n";
+ my $mountdata = do { local $/ = undef; <$mounts> };
+ close $mounts;
+ print {$pfd} $mountdata;
+ close $pfd;
- $conf->{lock} = 'rollback';
-
- my $forcemachine;
-
- # copy snapshot config to current config
-
- my $tmp_conf = $conf;
- &$snapshot_copy_config($tmp_conf->{snapshots}->{$snapname}, $conf);
- $conf->{snapshots} = $tmp_conf->{snapshots};
- delete $conf->{snaptime};
- delete $conf->{snapname};
- $conf->{parent} = $snapname;
-
- write_config($vmid, $conf);
- };
-
- my $unlockfn = sub {
- delete $conf->{lock};
- write_config($vmid, $conf);
- };
-
- lock_container($vmid, 10, $updatefn);
-
- PVE::Storage::volume_snapshot_rollback($storecfg, $volid, $snapname);
-
- lock_container($vmid, 5, $unlockfn);
+ while (waitpid($child, 0) != $child) {}
+ die "failed to sync container namespace\n" if $? != 0;
}
sub template_create {
my $storecfg = PVE::Storage::config();
- my $rootinfo = parse_ct_rootfs($conf->{rootfs});
+ my $rootinfo = PVE::LXC::Config->parse_ct_rootfs($conf->{rootfs});
my $volid = $rootinfo->{volume};
die "Template feature is not available for '$volid'\n"
my $template_volid = PVE::Storage::vdisk_create_base($storecfg, $volid);
$rootinfo->{volume} = $template_volid;
- $conf->{rootfs} = print_ct_mountpoint($rootinfo, 1);
-
- write_config($vmid, $conf);
-}
-
-sub is_template {
- my ($conf) = @_;
-
- return 1 if defined $conf->{template} && $conf->{template} == 1;
-}
-
-sub mountpoint_names {
- my ($reverse) = @_;
-
- my @names = ('rootfs');
-
- for (my $i = 0; $i < $MAX_MOUNT_POINTS; $i++) {
- push @names, "mp$i";
- }
-
- return $reverse ? reverse @names : @names;
-}
-
-# The container might have *different* symlinks than the host. realpath/abs_path
-# use the actual filesystem to resolve links.
-sub sanitize_mountpoint {
- my ($mp) = @_;
- $mp = '/' . $mp; # we always start with a slash
- $mp =~ s@/{2,}@/@g; # collapse sequences of slashes
- $mp =~ s@/\./@@g; # collapse /./
- $mp =~ s@/\.(/)?$@$1@; # collapse a trailing /. or /./
- $mp =~ s@(.*)/[^/]+/\.\./@$1/@g; # collapse /../ without regard for symlinks
- $mp =~ s@/\.\.(/)?$@$1@; # collapse trailing /.. or /../ disregarding symlinks
- return $mp;
-}
-
-sub foreach_mountpoint_full {
- my ($conf, $reverse, $func) = @_;
-
- foreach my $key (mountpoint_names($reverse)) {
- my $value = $conf->{$key};
- next if !defined($value);
- my $mountpoint = $key eq 'rootfs' ? parse_ct_rootfs($value, 1) : parse_ct_mountpoint($value, 1);
- next if !defined($mountpoint);
-
- $mountpoint->{mp} = sanitize_mountpoint($mountpoint->{mp});
+ $conf->{rootfs} = PVE::LXC::Config->print_ct_mountpoint($rootinfo, 1);
- my $path = $mountpoint->{volume};
- $mountpoint->{volume} = sanitize_mountpoint($path) if $path =~ m|^/|;
-
- &$func($key, $mountpoint);
- }
-}
-
-sub foreach_mountpoint {
- my ($conf, $func) = @_;
-
- foreach_mountpoint_full($conf, 0, $func);
-}
-
-sub foreach_mountpoint_reverse {
- my ($conf, $func) = @_;
-
- foreach_mountpoint_full($conf, 1, $func);
+ PVE::LXC::Config->write_config($vmid, $conf);
}
sub check_ct_modify_config_perm {
- my ($rpcenv, $authuser, $vmid, $pool, $key_list) = @_;
-
- return 1 if $authuser ne 'root@pam';
+ my ($rpcenv, $authuser, $vmid, $pool, $newconf, $delete) = @_;
- foreach my $opt (@$key_list) {
+ return 1 if $authuser eq 'root@pam';
+ my $check = sub {
+ my ($opt, $delete) = @_;
if ($opt eq 'cpus' || $opt eq 'cpuunits' || $opt eq 'cpulimit') {
$rpcenv->check_vm_perm($authuser, $vmid, $pool, ['VM.Config.CPU']);
} elsif ($opt eq 'rootfs' || $opt =~ /^mp\d+$/) {
$rpcenv->check_vm_perm($authuser, $vmid, $pool, ['VM.Config.Disk']);
+ return if $delete;
+ my $data = $opt eq 'rootfs' ? PVE::LXC::Config->parse_ct_rootfs($newconf->{$opt})
+ : PVE::LXC::Config->parse_ct_mountpoint($newconf->{$opt});
+ raise_perm_exc("mountpoint type $data->{type}") if $data->{type} ne 'volume';
} elsif ($opt eq 'memory' || $opt eq 'swap') {
$rpcenv->check_vm_perm($authuser, $vmid, $pool, ['VM.Config.Memory']);
} elsif ($opt =~ m/^net\d+$/ || $opt eq 'nameserver' ||
} else {
$rpcenv->check_vm_perm($authuser, $vmid, $pool, ['VM.Config.Options']);
}
+ };
+
+ foreach my $opt (keys %$newconf) {
+ &$check($opt, 0);
+ }
+ foreach my $opt (@$delete) {
+ &$check($opt, 1);
}
return 1;
my ($vmid, $storage_cfg, $conf, $noerr) = @_;
my $rootdir = "/var/lib/lxc/$vmid/rootfs";
- my $volid_list = get_vm_volumes($conf);
+ my $volid_list = PVE::LXC::Config->get_vm_volumes($conf);
- foreach_mountpoint_reverse($conf, sub {
+ PVE::LXC::Config->foreach_mountpoint_reverse($conf, sub {
my ($ms, $mountpoint) = @_;
my $volid = $mountpoint->{volume};
my $rootdir = "/var/lib/lxc/$vmid/rootfs";
File::Path::make_path($rootdir);
- my $volid_list = get_vm_volumes($conf);
+ my $volid_list = PVE::LXC::Config->get_vm_volumes($conf);
PVE::Storage::activate_volumes($storage_cfg, $volid_list);
eval {
- foreach_mountpoint($conf, sub {
+ PVE::LXC::Config->foreach_mountpoint($conf, sub {
my ($ms, $mountpoint) = @_;
mountpoint_mount($mountpoint, $rootdir, $storage_cfg);
return $found;
}
+# Run a function with a file attached to a loop device.
+# The loop device is always detached afterwards (or set to autoclear).
+# Returns the loop device.
+sub run_with_loopdev {
+ my ($func, $file) = @_;
+ my $device = query_loopdev($file);
+ # Try to reuse an existing device
+ if ($device) {
+ # We assume that whoever setup the loop device is responsible for
+ # detaching it.
+ &$func($device);
+ return $device;
+ }
+
+ my $parser = sub {
+ my $line = shift;
+ if ($line =~ m@^(/dev/loop\d+)$@) {
+ $device = $1;
+ }
+ };
+ PVE::Tools::run_command(['losetup', '--show', '-f', $file], outfunc => $parser);
+ die "failed to setup loop device for $file\n" if !$device;
+ eval { &$func($device); };
+ my $err = $@;
+ PVE::Tools::run_command(['losetup', '-d', $device]);
+ die $err if $err;
+ return $device;
+}
+
+sub bindmount {
+ my ($dir, $dest, $ro, @extra_opts) = @_;
+ PVE::Tools::run_command(['mount', '-o', 'bind', @extra_opts, $dir, $dest]);
+ if ($ro) {
+ eval { PVE::Tools::run_command(['mount', '-o', 'bind,remount,ro', $dest]); };
+ if (my $err = $@) {
+ warn "bindmount error\n";
+ # don't leave writable bind-mounts behind...
+ PVE::Tools::run_command(['umount', $dest]);
+ die $err;
+ }
+ }
+}
+
# use $rootdir = undef to just return the corresponding mount path
sub mountpoint_mount {
my ($mountpoint, $rootdir, $storage_cfg, $snapname) = @_;
my $volid = $mountpoint->{volume};
my $mount = $mountpoint->{mp};
my $type = $mountpoint->{type};
+ my $quota = !$snapname && !$mountpoint->{ro} && $mountpoint->{quota};
+ my $mounted_dev;
return if !$volid || !$mount;
die "unknown snapshot path for '$volid'" if !$storage && defined($snapname);
+ my $optstring = '';
+ if (defined($mountpoint->{acl})) {
+ $optstring .= ($mountpoint->{acl} ? 'acl' : 'noacl');
+ }
+ my $readonly = $mountpoint->{ro};
+
+ my @extra_opts = ('-o', $optstring) if $optstring;
+
if ($storage) {
my $scfg = PVE::Storage::storage_config($storage_cfg, $storage);
if ($scfg->{type} eq 'zfspool') {
my $path_arg = $path;
$path_arg =~ s!^/+!!;
- PVE::Tools::run_command(['mount', '-o', 'ro', '-t', 'zfs', $path_arg, $mount_path]);
+ PVE::Tools::run_command(['mount', '-o', 'ro', @extra_opts, '-t', 'zfs', $path_arg, $mount_path]);
} else {
die "cannot mount subvol snapshots for storage type '$scfg->{type}'\n";
}
} else {
- PVE::Tools::run_command(['mount', '-o', 'bind', $path, $mount_path]);
+ bindmount($path, $mount_path, $readonly, @extra_opts);
+ warn "cannot enable quota control for bind mounted subvolumes\n" if $quota;
}
}
- return wantarray ? ($path, 0) : $path;
+ return wantarray ? ($path, 0, undef) : $path;
} elsif ($format eq 'raw' || $format eq 'iso') {
+ # NOTE: 'mount' performs canonicalization without the '-c' switch, which for
+ # device-mapper devices is special-cased to use the /dev/mapper symlinks.
+ # Our autodev hook expects the /dev/dm-* device currently
+ # and will create the /dev/mapper symlink accordingly
+ ($path) = (Cwd::realpath($path) =~ /^(.*)$/s); # realpath() taints
+ my $domount = sub {
+ my ($path) = @_;
+ if ($mount_path) {
+ if ($format eq 'iso') {
+ PVE::Tools::run_command(['mount', '-o', 'ro', @extra_opts, $path, $mount_path]);
+ } elsif ($isBase || defined($snapname)) {
+ PVE::Tools::run_command(['mount', '-o', 'ro,noload', @extra_opts, $path, $mount_path]);
+ } else {
+ if ($quota) {
+ push @extra_opts, '-o', 'usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0';
+ }
+ push @extra_opts, '-o', 'ro' if $readonly;
+ PVE::Tools::run_command(['mount', @extra_opts, $path, $mount_path]);
+ }
+ }
+ };
my $use_loopdev = 0;
- my @extra_opts;
if ($scfg->{path}) {
- push @extra_opts, '-o', 'loop';
+ $mounted_dev = run_with_loopdev($domount, $path);
$use_loopdev = 1;
} elsif ($scfg->{type} eq 'drbd' || $scfg->{type} eq 'lvm' ||
$scfg->{type} eq 'rbd' || $scfg->{type} eq 'lvmthin') {
- # do nothing
+ $mounted_dev = $path;
+ &$domount($path);
} else {
die "unsupported storage type '$scfg->{type}'\n";
}
- if ($mount_path) {
- if ($format eq 'iso') {
- PVE::Tools::run_command(['mount', '-o', 'ro', @extra_opts, $path, $mount_path]);
- } elsif ($isBase || defined($snapname)) {
- PVE::Tools::run_command(['mount', '-o', 'ro,noload', @extra_opts, $path, $mount_path]);
- } else {
- PVE::Tools::run_command(['mount', @extra_opts, $path, $mount_path]);
- }
- }
- return wantarray ? ($path, $use_loopdev) : $path;
+ return wantarray ? ($path, $use_loopdev, $mounted_dev) : $path;
} else {
die "unsupported image format '$format'\n";
}
} elsif ($type eq 'device') {
- PVE::Tools::run_command(['mount', $volid, $mount_path]) if $mount_path;
- return wantarray ? ($volid, 0) : $volid;
+ push @extra_opts, '-o', 'ro' if $readonly;
+ PVE::Tools::run_command(['mount', @extra_opts, $volid, $mount_path]) if $mount_path;
+ return wantarray ? ($volid, 0, $volid) : $volid;
} elsif ($type eq 'bind') {
die "directory '$volid' does not exist\n" if ! -d $volid;
&$check_mount_path($volid);
- PVE::Tools::run_command(['mount', '-o', 'bind', $volid, $mount_path]) if $mount_path;
- return wantarray ? ($volid, 0) : $volid;
+ bindmount($volid, $mount_path, $readonly, @extra_opts) if $mount_path;
+ warn "cannot enable quota control for bind mounts\n" if $quota;
+ return wantarray ? ($volid, 0, undef) : $volid;
}
die "unsupported storage";
}
-sub get_vm_volumes {
- my ($conf, $excludes) = @_;
-
- my $vollist = [];
-
- foreach_mountpoint($conf, sub {
- my ($ms, $mountpoint) = @_;
-
- return if $excludes && $ms eq $excludes;
-
- my $volid = $mountpoint->{volume};
-
- return if !$volid || $mountpoint->{type} ne 'volume';
-
- my ($sid, $volname) = PVE::Storage::parse_volume_id($volid, 1);
- return if !$sid;
-
- push @$vollist, $volid;
- });
-
- return $vollist;
-}
-
sub mkfs {
my ($dev, $rootuid, $rootgid) = @_;
my (undef, $rootuid, $rootgid) = PVE::LXC::parse_id_maps($conf);
my $chown_vollist = [];
- foreach_mountpoint($settings, sub {
+ PVE::LXC::Config->foreach_mountpoint($settings, sub {
my ($ms, $mountpoint) = @_;
my $volid = $mountpoint->{volume};
push @$vollist, $volid;
$mountpoint->{volume} = $volid;
$mountpoint->{size} = $size_kb * 1024;
- $conf->{$ms} = print_ct_mountpoint($mountpoint, $ms eq 'rootfs');
+ $conf->{$ms} = PVE::LXC::Config->print_ct_mountpoint($mountpoint, $ms eq 'rootfs');
} else {
# use specified/existing volid/dir/device
- $conf->{$ms} = print_ct_mountpoint($mountpoint, $ms eq 'rootfs');
+ $conf->{$ms} = PVE::LXC::Config->print_ct_mountpoint($mountpoint, $ms eq 'rootfs');
}
});
return [];
}
+
1;
projects / pve-container.git / blobdiff