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#ifndef foodaemonloghfoo
#define foodaemonloghfoo
/* $Id$ */
/*
* This file is part of libdaemon.
*
* libdaemon is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* libdaemon is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with libdaemon; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include <syslog.h>
#ifdef __cplusplus
extern "C" {
#endif
/** \file
*
* Contains a robust API for logging messages
*/
/** Specifies where to send the log messages to. The global variable daemon_log_use takes values of this type.
*/
enum daemon_log_flags {
DAEMON_LOG_SYSLOG = 1, /**< Log messages are written to syslog */
DAEMON_LOG_STDERR = 2, /**< Log messages are written to STDERR */
DAEMON_LOG_STDOUT = 4, /**< Log messages are written to STDOUT */
DAEMON_LOG_AUTO = 8 /**< If this is set a daemon_fork() will
change this to DAEMON_LOG_SYSLOG in
the daemon process. */
};
/** This variable is used to specify the log target(s) to use. Defaults to DAEMON_LOG_STDERR|DAEMON_LOG_AUTO */
extern enum daemon_log_flags daemon_log_use;
/** Specifies the syslog identification, use daemon_ident_from_argv0()
* to set this to a sensible value or generate your own. */
extern char* daemon_log_ident;
#ifdef __GNUC__
/** A macro for making use of GCCs printf compilation warnings */
#define DAEMON_GCC_PRINTF_ATTR(a,b) __attribute__ ((format (printf, a, b)))
#else
#define DAEMON_GCC_PRINTF_ATTR(a,b)
#endif
/** Log a message using printf format strings using the specified syslog priority
* @param prio The syslog priority (PRIO_xxx constants)
* @param t,... The text message to log
*/
void daemon_log(int prio, const char* t, ...) DAEMON_GCC_PRINTF_ATTR(2,3);
/** Return a sensible syslog identification for daemon_log_ident
* generated from argv[0]. This will return a pointer to the file name
* of argv[0], i.e. strrchr(argv[0], '\')+1
* @param argv0 argv[0] as passed to main()
* @return The identification string
*/
char *daemon_ident_from_argv0(char *argv0);
#ifdef __cplusplus
}
#endif
#endif
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