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mirror of https://git.code.sf.net/p/minidlna/git synced 2024-10-31 16:58:06 +00:00
minidlna/log.h
Justin Maggard 138d03db19 Reload log file on SIGHUP
There's a report about a nightly "crash" when users download, compile
from source, and replace their distro's mindlnad binary.  This is because
the Debian package includes a patch that uses SIGUSR2 to reopen the log
file and sends SIGUSR2 from logrotate instead of just using the
"copytruncate" logrotate option.  Then logrotate sends SIGUSR2 at 6:25AM,
which causes us to abort due to the unhandled signal.

I don't want to sacrifice SIGUSR2 just for log rotation, especially when
we already do some reload operations on SIGHUP.  So to avoid this
Debian/Ubuntu issue, we'll explicitly ignore SIGUSR2, and add log file
reopening to the SIGHUP handler.  Then hopefully a future Debian package
version will remove the SIGUSR2 patch and use SIGHUP instead (or
copytruncate).

Fixes: SF Bug #313 (log rotation kills minidlna service)
2018-01-23 22:01:10 -08:00

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C

/* MiniDLNA media server
* Copyright (C) 2008-2010 NETGEAR, Inc. All Rights Reserved.
*
* This file is part of MiniDLNA.
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __ERR_H__
#define __ERR_H__
#define E_OFF 0
#define E_FATAL 1
#define E_ERROR 2
#define E_WARN 3
#define E_INFO 4
#define E_DEBUG 5
#define E_MAXDEBUG 6
enum _log_facility
{
L_GENERAL=0,
L_ARTWORK,
L_DB_SQL,
L_INOTIFY,
L_SCANNER,
L_METADATA,
L_HTTP,
L_SSDP,
L_TIVO,
L_MAX
};
extern int log_level[L_MAX];
extern int log_init(const char *debug);
extern void log_close(void);
extern void log_reopen(void);
extern void log_err(int level, enum _log_facility facility, char *fname, int lineno, char *fmt, ...)
__attribute__((__format__ (__printf__, 5, 6)));
#define DPRINTF(level, facility, fmt, arg...) do { log_err(level, facility, __FILE__, __LINE__, fmt, ##arg); } while (0)
#endif /* __ERR_H__ */