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/*
* Copyright 2023 KylinSoft Co., Ltd.
*
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "processreclaimer.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
ProcessReclaimer::ProcessReclaimer(QObject *parent)
: QObject{parent},
m_isAvailable(false)
{
if (access("/proc/1/reclaim",F_OK) != -1) {
m_isAvailable = true;
}
}
bool ProcessReclaimer::isAvailable()
{
return access("/proc/1/reclaim", F_OK) != -1;
}
common::DBusResult ProcessReclaimer::reclaimProcesses(const QList<int> pids)
{
auto result = common::initDbusResult();
if (pids.isEmpty()) {
result[common::kDbusErrMsg] = "The pids is empty!";
result[common::kDbusResult] = false;
return result;
}
const char *content = "all";
for (auto const &pid : qAsConst(pids)) {
QString api = QString("/proc/%1/reclaim").arg(pid);
QByteArray ba = api.toLocal8Bit();
int fd = open(ba.data(), O_RDWR | O_NONBLOCK);
if (fd < 0) {
result[common::kDbusErrMsg] = "Open api file " + api + " failed, " + strerror(errno);
result[common::kDbusResult] = false;
return result;
}
if (write(fd, content, strlen(content) + 1) < 0) {
result[common::kDbusErrMsg] = "Write api file " + api + " failed, " + strerror(errno);
result[common::kDbusResult] = false;
return result;
}
}
result[common::kDbusResult] = true;
return result;
}
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