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54 lines
1.4 KiB
54 lines
1.4 KiB
/*
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This file is part of the KDE games library
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Copyright (C) 2003 Nicolas Hadacek <hadacek@kde.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License version 2 as published by the Free Software Foundation.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef KFILELOCK_H
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#define KFILELOCK_H
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class KFileLock
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{
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public:
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KFileLock(int fd);
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/** Call unlock(). */
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~KFileLock();
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/** @return the file descriptor. */
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int fd() const { return _fd; }
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/*
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* Lock the file.
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* @return 0 on success, -1 on failure (no permission) and -2 if another
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* process is currently locking the file.
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*/
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int lock();
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/** Unlock the file. */
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void unlock();
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/** @return true if we currently lock the file. */
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bool isLocked() const { return _locked; }
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private:
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int _fd;
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bool _locked;
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};
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#endif
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