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Everywhere: Make JSON serialization fallible

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This allows us to eliminate a major source of infallible allocation in
the Kernel, as well as lay down the groundwork for OOM fallibility in
userland.
This commit is contained in:
Idan Horowitz 2022-02-24 20:08:48 +02:00 • committed by Andreas Kling
parent 6682afb5d4
commit feb00b7105
18 changed files with 837 additions and 592 deletions
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34
Kernel/Bus/USB/SysFSUSB.cpp
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@ -27,24 +27,24 @@ SysFSUSBDeviceInformation::~SysFSUSBDeviceInformation()
ErrorOr<void> SysFSUSBDeviceInformation::try_generate(KBufferBuilder& builder)
{
VERIFY(m_lock.is_locked());
JsonArraySerializer array { builder };
auto array = TRY(JsonArraySerializer<>::try_create(builder));
auto obj = array.add_object();
obj.add("device_address", m_device->address());
obj.add("usb_spec_compliance_bcd", m_device->device_descriptor().usb_spec_compliance_bcd);
obj.add("device_class", m_device->device_descriptor().device_class);
obj.add("device_sub_class", m_device->device_descriptor().device_sub_class);
obj.add("device_protocol", m_device->device_descriptor().device_protocol);
obj.add("max_packet_size", m_device->device_descriptor().max_packet_size);
obj.add("vendor_id", m_device->device_descriptor().vendor_id);
obj.add("product_id", m_device->device_descriptor().product_id);
obj.add("device_release_bcd", m_device->device_descriptor().device_release_bcd);
obj.add("manufacturer_id_descriptor_index", m_device->device_descriptor().manufacturer_id_descriptor_index);
obj.add("product_string_descriptor_index", m_device->device_descriptor().product_string_descriptor_index);
obj.add("serial_number_descriptor_index", m_device->device_descriptor().serial_number_descriptor_index);
obj.add("num_configurations", m_device->device_descriptor().num_configurations);
obj.finish();
array.finish();
auto obj = TRY(array.add_object());
TRY(obj.add("device_address", m_device->address()));
TRY(obj.add("usb_spec_compliance_bcd", m_device->device_descriptor().usb_spec_compliance_bcd));
TRY(obj.add("device_class", m_device->device_descriptor().device_class));
TRY(obj.add("device_sub_class", m_device->device_descriptor().device_sub_class));
TRY(obj.add("device_protocol", m_device->device_descriptor().device_protocol));
TRY(obj.add("max_packet_size", m_device->device_descriptor().max_packet_size));
TRY(obj.add("vendor_id", m_device->device_descriptor().vendor_id));
TRY(obj.add("product_id", m_device->device_descriptor().product_id));
TRY(obj.add("device_release_bcd", m_device->device_descriptor().device_release_bcd));
TRY(obj.add("manufacturer_id_descriptor_index", m_device->device_descriptor().manufacturer_id_descriptor_index));
TRY(obj.add("product_string_descriptor_index", m_device->device_descriptor().product_string_descriptor_index));
TRY(obj.add("serial_number_descriptor_index", m_device->device_descriptor().serial_number_descriptor_index));
TRY(obj.add("num_configurations", m_device->device_descriptor().num_configurations));
TRY(obj.finish());
TRY(array.finish());
return {};
}