disable two ClientCertStoreChromeOSTest.* unit_tests on Valgrind bots
[chromium-blink-merge.git] / device / serial / serial_device_enumerator_linux.cc
blob389b8035d2e872dfbbafdc72634429dec786fa0c
1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "device/serial/serial_device_enumerator_linux.h"
7 #include "base/logging.h"
8 #include "base/strings/string_number_conversions.h"
10 namespace device {
12 namespace {
14 const char kSerialSubsystem[] = "tty";
16 const char kHostPathKey[] = "DEVNAME";
17 const char kHostBusKey[] = "ID_BUS";
18 const char kVendorIDKey[] = "ID_VENDOR_ID";
19 const char kProductIDKey[] = "ID_MODEL_ID";
20 const char kProductNameKey[] = "ID_MODEL";
22 } // namespace
24 // static
25 scoped_ptr<SerialDeviceEnumerator> SerialDeviceEnumerator::Create() {
26 return scoped_ptr<SerialDeviceEnumerator>(new SerialDeviceEnumeratorLinux());
29 SerialDeviceEnumeratorLinux::SerialDeviceEnumeratorLinux() {
30 udev_.reset(udev_new());
33 SerialDeviceEnumeratorLinux::~SerialDeviceEnumeratorLinux() {}
35 mojo::Array<serial::DeviceInfoPtr> SerialDeviceEnumeratorLinux::GetDevices() {
36 mojo::Array<serial::DeviceInfoPtr> devices(0);
37 ScopedUdevEnumeratePtr enumerate(udev_enumerate_new(udev_.get()));
38 if (!enumerate) {
39 LOG(ERROR) << "Serial device enumeration failed.";
40 return devices.Pass();
42 if (udev_enumerate_add_match_subsystem(enumerate.get(), kSerialSubsystem)) {
43 LOG(ERROR) << "Serial device enumeration failed.";
44 return devices.Pass();
46 if (udev_enumerate_scan_devices(enumerate.get())) {
47 LOG(ERROR) << "Serial device enumeration failed.";
48 return devices.Pass();
51 udev_list_entry* entry = udev_enumerate_get_list_entry(enumerate.get());
52 for (; entry != NULL; entry = udev_list_entry_get_next(entry)) {
53 ScopedUdevDevicePtr device(udev_device_new_from_syspath(
54 udev_.get(), udev_list_entry_get_name(entry)));
55 // TODO(rockot): There may be a better way to filter serial devices here,
56 // but it's not clear what that would be. Udev will list lots of virtual
57 // devices with no real endpoint to back them anywhere. The presence of
58 // a bus identifier (e.g., "pci" or "usb") seems to be a good heuristic
59 // for detecting actual devices.
60 const char* path =
61 udev_device_get_property_value(device.get(), kHostPathKey);
62 const char* bus = udev_device_get_property_value(device.get(), kHostBusKey);
63 if (path != NULL && bus != NULL) {
64 serial::DeviceInfoPtr info(serial::DeviceInfo::New());
65 info->path = path;
67 const char* vendor_id =
68 udev_device_get_property_value(device.get(), kVendorIDKey);
69 const char* product_id =
70 udev_device_get_property_value(device.get(), kProductIDKey);
71 const char* product_name =
72 udev_device_get_property_value(device.get(), kProductNameKey);
74 uint32 int_value;
75 if (vendor_id && base::HexStringToUInt(vendor_id, &int_value)) {
76 info->vendor_id = int_value;
77 info->has_vendor_id = true;
79 if (product_id && base::HexStringToUInt(product_id, &int_value)) {
80 info->product_id = int_value;
81 info->has_product_id = true;
83 if (product_name)
84 info->display_name = product_name;
85 devices.push_back(info.Pass());
88 return devices.Pass();
91 } // namespace device