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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qsystemsemaphore.h"
#include "qsystemsemaphore_p.h"
#include <qdebug.h>
#include <qcoreapplication.h>
#ifndef QT_NO_SYSTEMSEMAPHORE
#include <sys/types.h>
#ifndef QT_POSIX_IPC
#include <sys/ipc.h>
#include <sys/sem.h>
#endif
#include <fcntl.h>
#include <errno.h>
#include "private/qcore_unix_p.h"
QT_BEGIN_NAMESPACE
QSystemSemaphorePrivate::QSystemSemaphorePrivate() :
#ifndef QT_POSIX_IPC
unix_key(-1), semaphore(-1), createdFile(false),
#else
semaphore(SEM_FAILED),
#endif // QT_POSIX_IPC
createdSemaphore(false), error(QSystemSemaphore::NoError)
{
}
void QSystemSemaphorePrivate::setErrorString(const QString &function)
{
// EINVAL is handled in functions so they can give better error strings
switch (errno) {
case EPERM:
case EACCES:
errorString = QSystemSemaphore::tr("%1: permission denied").arg(function);
error = QSystemSemaphore::PermissionDenied;
break;
case EEXIST:
errorString = QSystemSemaphore::tr("%1: already exists").arg(function);
error = QSystemSemaphore::AlreadyExists;
break;
case ENOENT:
errorString = QSystemSemaphore::tr("%1: does not exist").arg(function);
error = QSystemSemaphore::NotFound;
break;
case ERANGE:
case ENOSPC:
errorString = QSystemSemaphore::tr("%1: out of resources").arg(function);
error = QSystemSemaphore::OutOfResources;
break;
#if defined(QT_POSIX_IPC)
case ENAMETOOLONG:
errorString = QSystemSemaphore::tr("%1: key too long").arg(function);
error = QSystemSemaphore::KeyError;
break;
#endif
default:
errorString = QSystemSemaphore::tr("%1: unknown error %2").arg(function).arg(errno);
error = QSystemSemaphore::UnknownError;
#if defined QSYSTEMSEMAPHORE_DEBUG
qDebug() << errorString << "key" << key << "errno" << errno << EINVAL;
#endif
}
}
QT_END_NAMESPACE
#endif // QT_NO_SYSTEMSEMAPHORE
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