611409c777
usefull to have this macro in the interface so other modules using lockfiles can check if a certain lock is active.
42 lines
No EOL
1.3 KiB
C
42 lines
No EOL
1.3 KiB
C
/* lockfile.h
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*
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* Copyright (C) 2011 Henrik Hautakoski <henrik@fiktivkod.org>
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* Copyright (C) 2005 Junio C Hamano
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*
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* Based on lockfile.h from Git.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#ifndef LOCKFILE_H
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#define LOCKFILE_H
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struct lockfile {
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struct lockfile *next;
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int fd;
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char name[4096];
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};
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#define LOCKFILE_INIT { 0, -1, { 0 } }
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#define is_locked(x) ((x)->fd >= 0)
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int hold_lock(struct lockfile *lock, const char *filename, int force);
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int commit_lock(struct lockfile *lock);
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int release_lock(struct lockfile *lock);
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#endif /* LOCKFILE_H */ |