70 lines
2.1 KiB
C++
70 lines
2.1 KiB
C++
/*
|
|
* Copyright (C) 2021 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*
|
|
* Copied from device/google/cuttlefish/guest/commands/vport_trigger in Android R
|
|
* commit hash :69e0935b2929b26c5fc29646eef1d33c39e344f1
|
|
* (Migrate vport_trigger's Android.mk to Android.bp)
|
|
*
|
|
*/
|
|
|
|
#include <cutils/properties.h>
|
|
|
|
#include <sys/cdefs.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <dirent.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
|
|
#include <cerrno>
|
|
#include <climits>
|
|
#include <string>
|
|
#include "android-base/file.h"
|
|
#include "android-base/logging.h"
|
|
|
|
int main(int argc __unused, char* argv[] __unused) {
|
|
const char sysfs_base[] = "/sys/class/virtio-ports/";
|
|
DIR* dir = opendir(sysfs_base);
|
|
|
|
if (dir) {
|
|
dirent* dp;
|
|
while ((dp = readdir(dir)) != nullptr) {
|
|
std::string dirname = dp->d_name;
|
|
if (dirname == "." || dirname == "..") {
|
|
continue;
|
|
}
|
|
std::string sysfs(sysfs_base + dirname + "/name");
|
|
struct stat st;
|
|
if (stat(sysfs.c_str(), &st)) {
|
|
continue;
|
|
}
|
|
std::string content;
|
|
if (!android::base::ReadFileToString(sysfs, &content, true)) {
|
|
continue;
|
|
}
|
|
if (content.empty()) {
|
|
continue;
|
|
}
|
|
// Removing the last \n character
|
|
content.erase(content.end() - 1);
|
|
std::string dev("/dev/" + dirname);
|
|
std::string propname("vendor.ser." + content);
|
|
property_set(propname.c_str(), dev.c_str());
|
|
}
|
|
}
|
|
return 0;
|
|
}
|