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/*
* Copyright (C) 2021 CutefishOS Team.
*
* Author: Reion Wong <reion@cutefishos.com>
*
* 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
* 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 <http://www.gnu.org/licenses/>.
*/
#include "utils.h"
#include <QFile>
Utils::Utils(QObject *parent) : QObject(parent)
{
}
QString Utils::processNameFromPid(uint pid)
{
QFile file(QString("/proc/%1/cmdline").arg(pid));
QString name;
if (file.open(QIODevice::ReadOnly)) {
QByteArray cmd = file.readAll();
if (!cmd.isEmpty()) {
// extract non-truncated name from cmdline
int zeroIndex = cmd.indexOf('\0');
int processNameStart = cmd.lastIndexOf('/', zeroIndex);
if (processNameStart == -1) {
processNameStart = 0;
} else {
processNameStart++;
}
name = QString::fromLocal8Bit(cmd.mid(processNameStart, zeroIndex - processNameStart));
}
}
return name;
}
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