3 * Copyright (C) 2002 Simone Piccardi
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or (at
8 * your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 /*****************************************************************************
22 * Function to manipulate lock files.
24 * Author: S. Piccardi, Dec 2002
26 * $Id: LockFile.c,v 1.4 2003/05/02 09:55:14 piccardi Exp $
28 *****************************************************************************/
29 #include <sys/types.h>
31 #include <unistd.h> /* unix standard functions */
32 #include <fcntl.h> /* file control (lock) functions */
36 * Create a lockfile of the given pathname. Fail and exit in case of
37 * error or existence of the same lock file, using unlink do not need
40 * Author: Simone Piccardi, Dec. 2002
42 int LockFile(const char* path_name)
44 return open(path_name, O_EXCL|O_CREAT);
47 * Function UnlockFile:
48 * Remove a lockfile of the given pathname.
50 * Author: Simone Piccardi, Dec. 2002
52 int UnlockFile(const char* path_name)
54 return unlink(path_name);