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lxc console: limit output buffer size

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This commit is contained in:
Dietmar Maurer 2018-06-08 08:48:07 +02:00
parent 1ec5788ca4
commit 032dc44cfe
1 changed files with 9 additions and 2 deletions
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11
PVE/APIClient/Commands/lxc.pm
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@ -281,6 +281,8 @@ __PACKAGE__->register_method ({
$winch_received = 0;
};
my $max_buffer_len = 256*1024;
my $drain_buffer = sub {
my ($fh, $buffer_ref) = @_;
@ -292,7 +294,8 @@ __PACKAGE__->register_method ({
}
return $nr if !$nr;
substr($$buffer_ref, 0, $nr, '');
$write_select->remove($fh) if !length($$buffer_ref);
$len = length($$buffer_ref);
$write_select->remove($fh) if !$len;
};
while (1) {
@ -302,6 +305,7 @@ __PACKAGE__->register_method ({
foreach my $fh (@$writable) {
if ($fh == $output_fh) {
$drain_buffer->(\*STDOUT, \$output_buffer);
$read_select->add($web_socket) if length($output_buffer) <= $max_buffer_len;
} elsif ($fh == $web_socket) {
$drain_buffer->($web_socket, \$websock_buffer);
}
@ -319,9 +323,12 @@ __PACKAGE__->register_method ({
return; # EOF
} else {
my ($payload, $req_close) = $parse_web_socket_frame->(\$wsbuf);
if ($payload) {
if (defined($payload) && length($payload)) {
$output_buffer .= $payload;
$write_select->add($output_fh);
if (length($output_buffer) > $max_buffer_len) {
$read_select->remove($web_socket);
}
}
return if $req_close;
}