mirror of
https://github.com/qbittorrent/qBittorrent.git
synced 2025-01-09 00:27:28 +03:00
ff9a281b72
Change project directory structure according to application structure. Change 'nox' configuration option to something more meaningful 'nogui'. Rename 'Icons' folder to 'icons' (similar to other folders). Partially add 'nowebui' option support. Remove QConf project file.
115 lines
3.4 KiB
C++
115 lines
3.4 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the Qt Solutions component.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
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** of its contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <string.h>
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#include <errno.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include "qtlockedfile.h"
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bool QtLockedFile::lock(LockMode mode, bool block)
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{
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if (!isOpen()) {
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qWarning("QtLockedFile::lock(): file is not opened");
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return false;
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}
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if (mode == NoLock)
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return unlock();
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if (mode == m_lock_mode)
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return true;
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if (m_lock_mode != NoLock)
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unlock();
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struct flock fl;
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fl.l_whence = SEEK_SET;
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fl.l_start = 0;
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fl.l_len = 0;
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fl.l_type = (mode == ReadLock) ? F_RDLCK : F_WRLCK;
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int cmd = block ? F_SETLKW : F_SETLK;
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int ret = fcntl(handle(), cmd, &fl);
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if (ret == -1) {
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if (errno != EINTR && errno != EAGAIN)
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qWarning("QtLockedFile::lock(): fcntl: %s", strerror(errno));
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return false;
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}
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m_lock_mode = mode;
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return true;
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}
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bool QtLockedFile::unlock()
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{
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if (!isOpen()) {
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qWarning("QtLockedFile::unlock(): file is not opened");
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return false;
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}
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if (!isLocked())
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return true;
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struct flock fl;
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fl.l_whence = SEEK_SET;
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fl.l_start = 0;
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fl.l_len = 0;
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fl.l_type = F_UNLCK;
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int ret = fcntl(handle(), F_SETLKW, &fl);
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if (ret == -1) {
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qWarning("QtLockedFile::lock(): fcntl: %s", strerror(errno));
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return false;
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}
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m_lock_mode = NoLock;
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return true;
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}
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QtLockedFile::~QtLockedFile()
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{
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if (isOpen())
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unlock();
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}
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