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| author | jracle@logitech.com <jracle@logitech.com@0039d316-1c4b-4281-b951-d872f2087c98> | 2014-04-24 23:03:30 +0000 |
|---|---|---|
| committer | jracle@logitech.com <jracle@logitech.com@0039d316-1c4b-4281-b951-d872f2087c98> | 2014-04-24 23:03:30 +0000 |
| commit | 20a58e6943c8d3ff008b3043d01642b34511c0b1 (patch) | |
| tree | 4658063e0e3d2187d355516568f4ba19ceb620b9 /device/hid/hid_connection_linux.cc | |
| parent | db2833886f19cd4a687b5159e066e89d889ad21a (diff) | |
| download | chromium_src-20a58e6943c8d3ff008b3043d01642b34511c0b1.zip chromium_src-20a58e6943c8d3ff008b3043d01642b34511c0b1.tar.gz chromium_src-20a58e6943c8d3ff008b3043d01642b34511c0b1.tar.bz2 | |
HID : read-only device access fallback when read/write fails
- for Windows and Linux
- open device with read access when read/write fails
BUG=364438
R=rockot@chromium.org
Review URL: https://codereview.chromium.org/240263003
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@266022 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'device/hid/hid_connection_linux.cc')
| -rw-r--r-- | device/hid/hid_connection_linux.cc | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/device/hid/hid_connection_linux.cc b/device/hid/hid_connection_linux.cc index 936c7b1..204d41d 100644 --- a/device/hid/hid_connection_linux.cc +++ b/device/hid/hid_connection_linux.cc @@ -64,8 +64,20 @@ HidConnectionLinux::HidConnectionLinux(HidDeviceInfo device_info, base::File device_file(base::FilePath(dev_node), flags); if (!device_file.IsValid()) { - LOG(ERROR) << device_file.error_details(); - return; + base::File::Error file_error = device_file.error_details(); + + if (file_error == base::File::FILE_ERROR_ACCESS_DENIED) { + flags = base::File::FLAG_OPEN | base::File::FLAG_READ; + + base::File device_file(base::FilePath(dev_node), flags); + if (!device_file.IsValid()) { + LOG(ERROR) << device_file.error_details(); + return; + } + } else { + LOG(ERROR) << file_error; + return; + } } if (fcntl(device_file.GetPlatformFile(), F_SETFL, fcntl(device_file.GetPlatformFile(), F_GETFL) | O_NONBLOCK)) { |