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lsusb: Add -v flag to lsusb :^)

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We can now get a more verbose print out from `lsusb` that spits out all
of the devices descriptors :^)
This commit is contained in:
Jesse Buhagiar 2022-05-29 23:30:45 +10:00 committed by Andreas Kling
parent a1ed9d3c60
commit a88e3bde18
Notes: sideshowbarker 2024-07-17 11:30:05 +09:00 
Author: https://github.com/Quaker762
Commit: https://github.com/SerenityOS/serenity/commit/a88e3bde18
Pull-request: https://github.com/SerenityOS/serenity/pull/14134
Reviewed-by: https://github.com/b14ckcat
Reviewed-by: https://github.com/linusg
1 changed files with 69 additions and 1 deletions
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70
Userland/Utilities/lsusb.cpp
View file

@ -5,6 +5,7 @@
*/
#include <AK/ByteBuffer.h>
#include <AK/FixedArray.h>
#include <AK/JsonArray.h>
#include <AK/JsonObject.h>
#include <AK/LexicalPath.h>
@ -25,8 +26,10 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
TRY(Core::System::unveil("/res/usb.ids", "r"));
TRY(Core::System::unveil(nullptr, nullptr));
bool print_verbose;
Core::ArgsParser args;
args.set_general_help("List USB devices.");
args.add_option(print_verbose, "Print all device descriptors", "verbose", 'v');
args.parse(arguments);
Core::DirIterator usb_devices("/sys/bus/usb", Core::DirIterator::SkipDots);
@ -53,7 +56,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
}
auto json = json_or_error.release_value();
json.as_array().for_each([usb_db](auto& value) {
json.as_array().for_each([usb_db, print_verbose](auto& value) {
auto& device_descriptor = value.as_object();
auto device_address = device_descriptor.get("device_address").to_u32();
@ -66,6 +69,71 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
device_string = "Unknown Device";
outln("Device {}: ID {:04x}:{:04x} {} {}", device_address, vendor_id, product_id, vendor_string, device_string);
if (print_verbose) {
outln("Device Descriptor");
outln(" bLength {}", device_descriptor.get("length").to_u32());
outln(" bDescriptorType {}", device_descriptor.get("descriptor_type").to_u32());
outln(" bcdUSB {}", device_descriptor.get("usb_spec_compliance_bcd").to_u32());
outln(" bDeviceClass {}", device_descriptor.get("device_class").to_u32());
outln(" bDeviceSubClass {}", device_descriptor.get("device_sub_class").to_u32());
outln(" bDeviceProtocol {}", device_descriptor.get("device_protocol").to_u32());
outln(" bMaxPacketSize {}", device_descriptor.get("max_packet_size").to_u32());
outln(" idVendor 0x{:04x} {}", device_descriptor.get("vendor_id").to_u32(), vendor_string);
outln(" idProduct 0x{:04x} {}", device_descriptor.get("product_id").to_u32(), device_string);
outln(" bcdDevice {}", device_descriptor.get("device_release_bcd").to_u32());
outln(" iManufacturer {}", device_descriptor.get("manufacturer_id_descriptor_index").to_u32());
outln(" iProduct {}", device_descriptor.get("product_string_descriptor_index").to_u32());
outln(" iSerial {}", device_descriptor.get("serial_number_descriptor_index").to_u32());
outln(" bNumConfigurations {}", device_descriptor.get("num_configurations").to_u32());
auto const& configuration_descriptors = value.as_object().get("configurations");
configuration_descriptors.as_array().for_each([&](auto& config_value) {
auto const& configuration_descriptor = config_value.as_object();
outln(" Configuration Descriptor:");
outln(" bLength {}", configuration_descriptor.get("length").as_u32());
outln(" bDescriptorType {}", configuration_descriptor.get("descriptor_type").as_u32());
outln(" wTotalLength {}", configuration_descriptor.get("total_length").as_u32());
outln(" bNumInterfaces {}", configuration_descriptor.get("number_of_interfaces").as_u32());
outln(" bmAttributes 0x{:02x}", configuration_descriptor.get("attributes_bitmap").as_u32());
outln(" MaxPower {}mA", configuration_descriptor.get("max_power").as_u32() * 2u);
auto const& interface_descriptors = config_value.as_object().get("interfaces");
interface_descriptors.as_array().for_each([&](auto& interface_value) {
auto const& interface_descriptor = interface_value.as_object();
auto const interface_class_code = interface_descriptor.get("interface_class_code").to_u32();
auto const interface_subclass_code = interface_descriptor.get("interface_sub_class_code").to_u32();
auto const interface_protocol_code = interface_descriptor.get("interface_protocol").to_u32();
auto const interface_class = usb_db->get_class(interface_class_code);
auto const interface_subclass = usb_db->get_subclass(interface_class_code, interface_subclass_code);
auto const interface_protocol = usb_db->get_protocol(interface_class_code, interface_subclass_code, interface_protocol_code);
outln(" Interface Descriptor:");
outln(" bLength {}", interface_descriptor.get("length").to_u32());
outln(" bDescriptorType {}", interface_descriptor.get("descriptor_type").to_u32());
outln(" bInterfaceNumber {}", interface_descriptor.get("interface_number").to_u32());
outln(" bAlternateSetting {}", interface_descriptor.get("alternate_setting").to_u32());
outln(" bNumEndpoints {}", interface_descriptor.get("num_endpoints").to_u32());
outln(" bInterfaceClass {} {}", interface_class_code, interface_class);
outln(" bInterfaceSubClass {} {}", interface_subclass_code, interface_subclass);
outln(" bInterfaceProtocol {} {}", interface_protocol_code, interface_protocol);
outln(" iInterface {}", interface_descriptor.get("interface_string_desc_index").to_u32());
auto const& endpoint_descriptors = interface_value.as_object().get("endpoints");
endpoint_descriptors.as_array().for_each([&](auto& endpoint_value) {
auto const& endpoint_descriptor = endpoint_value.as_object();
auto const endpoint_address = endpoint_descriptor.get("endpoint_address").to_u32();
outln(" Endpoint Descriptor:");
outln(" bLength {}", endpoint_descriptor.get("length").to_u32());
outln(" bDescriptorType {}", endpoint_descriptor.get("descriptor_type").to_u32());
outln(" bEndpointAddress 0x{:02x} EP {} {}", endpoint_address, (endpoint_address & 0xFu), ((endpoint_address & 0x80u) ? "IN" : "OUT"));
outln(" bmAttributes 0x{:02x}", endpoint_descriptor.get("attribute_bitmap").to_u32());
outln(" wMaxPacketSize 0x{:04x}", endpoint_descriptor.get("max_packet_size").to_u32());
outln(" bInterval {}", endpoint_descriptor.get("polling_interval").to_u32());
});
});
});
}
});
}