1 // Copyright (c) 2012 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 "content/browser/udev_linux.h"
9 #include "base/message_loop/message_loop.h"
13 UdevLinux::UdevLinux(const std::vector<UdevMonitorFilter>& filters,
14 const UdevNotificationCallback& callback)
21 monitor_ = udev_monitor_new_from_netlink(udev_, "udev");
24 for (size_t i = 0; i < filters.size(); ++i) {
25 int ret = udev_monitor_filter_add_match_subsystem_devtype(
26 monitor_, filters[i].subsystem, filters[i].devtype);
30 int ret = udev_monitor_enable_receiving(monitor_);
32 monitor_fd_ = udev_monitor_get_fd(monitor_);
33 CHECK_GE(monitor_fd_, 0);
35 bool success = base::MessageLoopForIO::current()->WatchFileDescriptor(
38 base::MessageLoopForIO::WATCH_READ,
44 UdevLinux::~UdevLinux() {
45 monitor_watcher_.StopWatchingFileDescriptor();
46 udev_monitor_unref(monitor_);
50 udev* UdevLinux::udev_handle() {
54 void UdevLinux::OnFileCanReadWithoutBlocking(int fd) {
55 // Events occur when devices attached to the system are added, removed, or
56 // change state. udev_monitor_receive_device() will return a device object
57 // representing the device which changed and what type of change occured.
58 DCHECK_EQ(monitor_fd_, fd);
59 udev_device* dev = udev_monitor_receive_device(monitor_);
64 udev_device_unref(dev);
67 void UdevLinux::OnFileCanWriteWithoutBlocking(int fd) {
70 } // namespace content