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genode_c_api: report usb config on demand

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Do not only report devices, but the current configuration of the driver too,
as long as the `report` node in the configuration states it.

Ref genodelabs/genode#4416
This commit is contained in:
Stefan Kalkowski 2022-02-21 14:59:15 +01:00 committed by Norman Feske
parent 938ac716a8
commit a30c4281d2
1 changed files with 16 additions and 13 deletions
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29
repos/os/src/lib/genode_c_api/usb.cc
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@ -156,7 +156,8 @@ class Root : public Root_component<genode_usb_session>
Attached_rom_dataspace _config { _env, "config" };
Signal_handler<Root> _config_handler { _env.ep(), *this,
&Root::_announce_service };
Constructible<Reporter> _reporter { };
Reporter _config_reporter { _env, "config" };
Reporter _device_reporter { _env, "devices" };
Constructible<Device> _devices[MAX_DEVICES];
List<List_element<genode_usb_session>> _sessions {};
Id_allocator _id_alloc {};
@ -587,11 +588,7 @@ void ::Root::_report()
{
using Value = String<64>;
if (!_reporter.constructed())
return;
_reporter->enabled(true);
Reporter::Xml_generator xml(*_reporter, [&] () {
Reporter::Xml_generator xml(_device_reporter, [&] () {
_for_each_device([&] (Device & d) {
xml.node("device", [&] {
xml.attribute("label", d.label());
@ -620,13 +617,19 @@ void ::Root::_announce_service()
* Check for report policy, and resp. con-/destruct device reporter
*/
_config.xml().with_sub_node("report", [&] (Xml_node node) {
if (node.attribute_value("devices", false)) {
if (!_reporter.constructed())
_reporter.construct(_env, "devices");
} else {
if (_reporter.constructed())
_reporter.destruct();
}
_device_reporter.enabled(node.attribute_value("devices", false));
_config_reporter.enabled(node.attribute_value("config", false));
});
/*
* Report the own configuration to show management component
* that we've consumed the configuration
*/
Reporter::Xml_generator xml(_config_reporter, [&] {
xml.attribute("bios_handoff",
_config.xml().attribute_value("bios_handoff", true));
_config.xml().with_raw_content([&] (char const *start, size_t len) {
xml.append(start, len); });
});
if (_announced)