1 /* This file is part of the YAZ toolkit.
2 * Copyright (C) 1995-2008 Index Data.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of Index Data nor the names of its contributors
13 * may be used to endorse or promote products derived from this
14 * software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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27 /* $Id: daemon.h,v 1.3 2008-02-21 10:44:43 adam Exp $ */
31 * \brief Unix daemon management
38 #include <yaz/yconfig.h>
42 #define YAZ_DAEMON_FORK 1
43 #define YAZ_DAEMON_DEBUG 2
44 #define YAZ_DAEMON_KEEPALIVE 4
46 /** \brief daemon utility.
47 \param progname program name for logging purposes.
48 \param flags flags which is a bit-wise combination of YAZ_DAEMON_..
49 \param work working handler (which may be running in different process)
50 \param data opaque data to be passed to work handler
51 \param pidfile filename with Process-ID (NULL for no file)
52 \param uid effective user ID for handler (NULL for no same as caller)
53 \returns 0 for success, non-zero for failure.
55 This function puts calls work handler which is supposed to carry
56 out a daemon service with a possible changed User ID and in a
59 Flag YAZ_DAEMON_FORK: Puts the service in the background on Unix.
61 Flag YAZ_DAEMON_DEBUG: Puts the service in debug mode (no fork at all).
63 Flag YAZ_DAEMON_KEEPALIVE: Repeatedly calls work handler if it makes a
67 int yaz_daemon(const char *progname,
69 void (*work)(void *data), void *data,
70 const char *pidfile, const char *uid);
78 * indent-tabs-mode: nil
80 * vim: shiftwidth=4 tabstop=8 expandtab