2012-07-18 19:07:51 +02:00
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#pragma once
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2010-01-20 19:18:52 +01:00
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2010-02-03 13:03:47 +01:00
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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2012-04-12 00:20:58 +02:00
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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2010-02-03 13:03:47 +01:00
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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2012-04-12 00:20:58 +02:00
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Lesser General Public License for more details.
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2010-02-03 13:03:47 +01:00
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2012-04-12 00:20:58 +02:00
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You should have received a copy of the GNU Lesser General Public License
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2010-02-03 13:03:47 +01:00
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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2015-10-24 22:58:24 +02:00
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#include <errno.h>
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2012-03-14 14:54:41 +01:00
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#include <stdarg.h>
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2015-10-24 22:58:24 +02:00
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#include <stdbool.h>
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2015-03-10 01:02:59 +01:00
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#include <stdlib.h>
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2014-02-10 02:08:55 +01:00
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#include <sys/signalfd.h>
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2015-11-08 20:05:55 +01:00
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#include <sys/socket.h>
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2015-10-24 22:58:24 +02:00
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#include <syslog.h>
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2010-01-20 19:18:52 +01:00
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2012-12-05 11:59:05 +01:00
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#include "sd-id128.h"
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2015-10-24 22:58:24 +02:00
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2015-04-21 17:26:04 +02:00
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#include "macro.h"
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2010-01-20 19:18:52 +01:00
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2017-02-23 04:57:34 +01:00
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typedef enum LogRealm {
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LOG_REALM_SYSTEMD,
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LOG_REALM_UDEV,
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_LOG_REALM_MAX,
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} LogRealm;
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#ifndef LOG_REALM
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# define LOG_REALM LOG_REALM_SYSTEMD
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#endif
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2010-04-06 21:57:45 +02:00
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typedef enum LogTarget{
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LOG_TARGET_CONSOLE,
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2015-01-22 03:47:46 +01:00
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LOG_TARGET_CONSOLE_PREFIXED,
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2010-04-06 21:57:45 +02:00
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LOG_TARGET_KMSG,
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2012-01-12 04:34:31 +01:00
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LOG_TARGET_JOURNAL,
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LOG_TARGET_JOURNAL_OR_KMSG,
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2010-05-15 17:25:08 +02:00
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LOG_TARGET_SYSLOG,
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LOG_TARGET_SYSLOG_OR_KMSG,
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2012-01-12 04:34:31 +01:00
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LOG_TARGET_AUTO, /* console if stderr is tty, JOURNAL_OR_KMSG otherwise */
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2012-05-22 22:00:37 +02:00
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LOG_TARGET_SAFE, /* console if stderr is tty, KMSG otherwise */
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2010-06-09 15:37:37 +02:00
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LOG_TARGET_NULL,
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2010-04-06 21:57:45 +02:00
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_LOG_TARGET_MAX,
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_LOG_TARGET_INVALID = -1
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} LogTarget;
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#define LOG_REALM_PLUS_LEVEL(realm, level) \
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((realm) << 10 | (level))
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#define LOG_REALM_REMOVE_LEVEL(realm_level) \
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((realm_level >> 10))
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2010-04-06 21:57:45 +02:00
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void log_set_target(LogTarget target);
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2017-02-23 04:57:34 +01:00
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void log_set_max_level_realm(LogRealm realm, int level);
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#define log_set_max_level(level) \
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log_set_max_level_realm(LOG_REALM, (level))
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2012-04-03 19:25:29 +02:00
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void log_set_facility(int facility);
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2010-04-06 21:57:45 +02:00
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2010-04-06 23:38:32 +02:00
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int log_set_target_from_string(const char *e);
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2017-02-23 04:57:34 +01:00
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int log_set_max_level_from_string_realm(LogRealm realm, const char *e);
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#define log_set_max_level_from_string(e) \
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log_set_max_level_from_string_realm(LOG_REALM, (e))
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2010-04-06 23:38:32 +02:00
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2010-06-17 22:52:55 +02:00
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void log_show_color(bool b);
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2014-02-16 00:13:46 +01:00
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bool log_get_show_color(void) _pure_;
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2010-06-17 22:52:55 +02:00
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void log_show_location(bool b);
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2014-02-16 00:13:46 +01:00
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bool log_get_show_location(void) _pure_;
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2010-06-17 22:52:55 +02:00
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int log_show_color_from_string(const char *e);
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int log_show_location_from_string(const char *e);
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2013-05-03 04:51:50 +02:00
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LogTarget log_get_target(void) _pure_;
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2017-02-23 04:57:34 +01:00
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int log_get_max_level_realm(LogRealm realm) _pure_;
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#define log_get_max_level() \
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log_get_max_level_realm(LOG_REALM)
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2010-04-10 17:40:18 +02:00
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2010-05-15 17:25:08 +02:00
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int log_open(void);
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2011-07-25 21:22:57 +02:00
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void log_close(void);
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2011-11-16 23:45:01 +01:00
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void log_forget_fds(void);
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2010-05-15 17:25:08 +02:00
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2010-04-06 21:57:45 +02:00
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void log_close_syslog(void);
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2012-01-12 04:34:31 +01:00
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void log_close_journal(void);
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2010-05-15 17:25:08 +02:00
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void log_close_kmsg(void);
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void log_close_console(void);
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2010-04-06 21:57:45 +02:00
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2017-02-23 04:57:34 +01:00
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void log_parse_environment_realm(LogRealm realm);
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#define log_parse_environment() \
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log_parse_environment_realm(LOG_REALM)
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2010-04-06 23:38:32 +02:00
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2017-04-21 18:52:54 +02:00
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int log_dispatch_internal(
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int level,
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int error,
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const char *file,
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int line,
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const char *func,
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const char *object_field,
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const char *object,
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const char *extra,
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const char *extra_field,
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char *buffer);
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2017-02-23 04:57:34 +01:00
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int log_internal_realm(
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2012-08-24 22:21:20 +02:00
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int level,
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2014-11-27 19:48:02 +01:00
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int error,
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2014-11-27 20:20:23 +01:00
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const char *file,
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2012-08-24 22:21:20 +02:00
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int line,
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const char *func,
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2014-11-27 19:48:02 +01:00
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const char *format, ...) _printf_(6,7);
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2017-02-23 04:57:34 +01:00
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#define log_internal(level, ...) \
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log_internal_realm(LOG_REALM_PLUS_LEVEL(LOG_REALM, (level)), __VA_ARGS__)
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2010-01-20 19:18:52 +01:00
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2017-02-23 04:57:34 +01:00
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int log_internalv_realm(
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2012-08-24 22:21:20 +02:00
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int level,
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2014-11-27 19:48:02 +01:00
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int error,
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2014-11-27 20:20:23 +01:00
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const char *file,
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2012-08-24 22:21:20 +02:00
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int line,
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const char *func,
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const char *format,
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2014-11-27 19:48:02 +01:00
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va_list ap) _printf_(6,0);
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2017-02-23 04:57:34 +01:00
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#define log_internalv(level, ...) \
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log_internalv_realm(LOG_REALM_PLUS_LEVEL(LOG_REALM, (level)), __VA_ARGS__)
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2012-08-24 22:21:20 +02:00
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2017-02-23 04:57:34 +01:00
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/* Realm is fixed to LOG_REALM_SYSTEMD for those */
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2014-11-27 20:20:23 +01:00
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int log_object_internal(
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2013-01-05 17:59:46 +01:00
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int level,
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2014-11-27 19:48:02 +01:00
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int error,
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2014-11-27 20:20:23 +01:00
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const char *file,
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2013-01-05 17:59:46 +01:00
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int line,
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const char *func,
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2014-11-27 20:20:23 +01:00
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const char *object_field,
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2013-01-05 17:59:46 +01:00
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const char *object,
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2016-08-30 23:18:46 +02:00
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const char *extra_field,
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const char *extra,
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const char *format, ...) _printf_(10,11);
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2013-01-05 17:59:46 +01:00
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2014-11-27 20:20:23 +01:00
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int log_object_internalv(
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2013-01-05 17:59:46 +01:00
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int level,
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2014-11-27 19:48:02 +01:00
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int error,
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2016-08-30 23:18:46 +02:00
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const char *file,
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2013-01-05 17:59:46 +01:00
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int line,
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const char *func,
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2014-11-27 20:20:23 +01:00
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const char *object_field,
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2013-01-05 17:59:46 +01:00
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const char *object,
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2016-08-30 23:18:46 +02:00
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const char *extra_field,
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const char *extra,
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2013-01-05 17:59:46 +01:00
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const char *format,
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2017-04-20 20:09:47 +02:00
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va_list ap) _printf_(10,0);
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2013-01-05 17:59:46 +01:00
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2012-08-24 22:21:20 +02:00
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int log_struct_internal(
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int level,
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2014-11-27 19:48:02 +01:00
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int error,
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2012-08-24 22:21:20 +02:00
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const char *file,
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int line,
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const char *func,
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2014-11-27 19:48:02 +01:00
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const char *format, ...) _printf_(6,0) _sentinel_;
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2012-08-24 22:21:20 +02:00
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int log_oom_internal(
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2017-02-23 04:57:34 +01:00
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LogRealm realm,
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2012-08-24 22:21:20 +02:00
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const char *file,
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int line,
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const char *func);
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2010-04-22 03:51:26 +02:00
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2015-11-08 20:05:55 +01:00
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int log_format_iovec(
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struct iovec *iovec,
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unsigned iovec_len,
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unsigned *n,
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bool newline_separator,
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int error,
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const char *format,
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2017-04-20 20:15:28 +02:00
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va_list ap) _printf_(6, 0);
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2015-11-08 20:05:55 +01:00
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2010-06-04 19:45:53 +02:00
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/* This modifies the buffer passed! */
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int log_dump_internal(
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2012-08-24 22:21:20 +02:00
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int level,
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2014-11-27 19:48:02 +01:00
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int error,
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2014-11-27 20:20:23 +01:00
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const char *file,
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2012-08-24 22:21:20 +02:00
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int line,
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const char *func,
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char *buffer);
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2014-11-27 19:48:02 +01:00
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/* Logging for various assertions */
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2017-02-23 04:57:34 +01:00
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noreturn void log_assert_failed_realm(
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LogRealm realm,
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2012-08-24 22:21:20 +02:00
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const char *text,
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const char *file,
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int line,
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const char *func);
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2017-02-23 04:57:34 +01:00
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#define log_assert_failed(text, ...) \
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log_assert_failed_realm(LOG_REALM, (text), __VA_ARGS__)
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2012-08-24 22:21:20 +02:00
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2017-02-23 04:57:34 +01:00
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noreturn void log_assert_failed_unreachable_realm(
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LogRealm realm,
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2012-08-24 22:21:20 +02:00
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const char *text,
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const char *file,
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int line,
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const char *func);
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2017-02-23 04:57:34 +01:00
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#define log_assert_failed_unreachable(text, ...) \
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log_assert_failed_unreachable_realm(LOG_REALM, (text), __VA_ARGS__)
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2013-12-10 18:01:10 +01:00
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2017-02-23 04:57:34 +01:00
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void log_assert_failed_return_realm(
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LogRealm realm,
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2013-12-10 18:01:10 +01:00
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const char *text,
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const char *file,
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int line,
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const char *func);
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2017-02-23 04:57:34 +01:00
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#define log_assert_failed_return(text, ...) \
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log_assert_failed_return_realm(LOG_REALM, (text), __VA_ARGS__)
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2010-06-04 19:45:53 +02:00
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2017-04-21 18:52:54 +02:00
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#define log_dispatch(level, error, buffer) \
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log_dispatch_internal(level, error, __FILE__, __LINE__, __func__, NULL, NULL, NULL, NULL, buffer)
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2014-11-27 19:48:02 +01:00
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/* Logging with level */
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2017-02-23 04:57:34 +01:00
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#define log_full_errno_realm(realm, level, error, ...) \
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2015-02-18 18:27:32 +01:00
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({ \
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int _level = (level), _e = (error); \
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2017-02-23 04:57:34 +01:00
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(log_get_max_level_realm((realm)) >= LOG_PRI(_level)) \
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? log_internal_realm(LOG_REALM_PLUS_LEVEL((realm), _level), _e, \
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__FILE__, __LINE__, __func__, __VA_ARGS__) \
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2015-02-18 18:27:32 +01:00
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: -abs(_e); \
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2014-11-28 03:10:55 +01:00
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})
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2013-10-20 21:17:55 +02:00
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2017-02-23 04:57:34 +01:00
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#define log_full_errno(level, error, ...) \
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log_full_errno_realm(LOG_REALM, (level), (error), __VA_ARGS__)
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#define log_full(level, ...) log_full_errno((level), 0, __VA_ARGS__)
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2014-11-27 19:48:02 +01:00
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/* Normal logging */
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2014-11-06 06:04:06 +01:00
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#define log_debug(...) log_full(LOG_DEBUG, __VA_ARGS__)
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#define log_info(...) log_full(LOG_INFO, __VA_ARGS__)
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#define log_notice(...) log_full(LOG_NOTICE, __VA_ARGS__)
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#define log_warning(...) log_full(LOG_WARNING, __VA_ARGS__)
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#define log_error(...) log_full(LOG_ERR, __VA_ARGS__)
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#define log_emergency(...) log_full(getpid() == 1 ? LOG_EMERG : LOG_ERR, __VA_ARGS__)
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2010-01-20 19:18:52 +01:00
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2014-11-27 19:48:02 +01:00
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/* Logging triggered by an errno-like error */
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#define log_debug_errno(error, ...) log_full_errno(LOG_DEBUG, error, __VA_ARGS__)
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#define log_info_errno(error, ...) log_full_errno(LOG_INFO, error, __VA_ARGS__)
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#define log_notice_errno(error, ...) log_full_errno(LOG_NOTICE, error, __VA_ARGS__)
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#define log_warning_errno(error, ...) log_full_errno(LOG_WARNING, error, __VA_ARGS__)
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#define log_error_errno(error, ...) log_full_errno(LOG_ERR, error, __VA_ARGS__)
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2014-11-28 11:54:25 +01:00
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#define log_emergency_errno(error, ...) log_full_errno(getpid() == 1 ? LOG_EMERG : LOG_ERR, error, __VA_ARGS__)
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2014-11-27 19:48:02 +01:00
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2014-10-23 06:27:57 +02:00
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#ifdef LOG_TRACE
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# define log_trace(...) log_debug(__VA_ARGS__)
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#else
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2016-02-23 18:52:52 +01:00
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# define log_trace(...) do {} while (0)
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2014-10-23 06:27:57 +02:00
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#endif
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2014-11-27 19:48:02 +01:00
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/* Structured logging */
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2017-02-23 04:57:34 +01:00
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#define log_struct_errno(level, error, ...) \
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log_struct_internal(LOG_REALM_PLUS_LEVEL(LOG_REALM, level), \
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error, __FILE__, __LINE__, __func__, __VA_ARGS__)
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#define log_struct(level, ...) log_struct_errno(level, 0, __VA_ARGS__)
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2012-07-25 23:55:59 +02:00
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2010-06-04 19:45:53 +02:00
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/* This modifies the buffer passed! */
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2017-02-23 04:57:34 +01:00
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#define log_dump(level, buffer) \
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log_dump_internal(LOG_REALM_PLUS_LEVEL(LOG_REALM, level), \
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0, __FILE__, __LINE__, __func__, buffer)
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2014-11-27 19:48:02 +01:00
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2017-02-23 04:57:34 +01:00
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#define log_oom() log_oom_internal(LOG_REALM, __FILE__, __LINE__, __func__)
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2010-06-04 19:45:53 +02:00
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2013-05-03 04:51:50 +02:00
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bool log_on_console(void) _pure_;
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2012-08-24 22:43:33 +02:00
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2013-05-03 04:51:50 +02:00
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const char *log_target_to_string(LogTarget target) _const_;
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LogTarget log_target_from_string(const char *s) _pure_;
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2012-10-16 16:26:41 +02:00
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tree-wide: add SD_ID128_MAKE_STR, remove LOG_MESSAGE_ID
Embedding sd_id128_t's in constant strings was rather cumbersome. We had
SD_ID128_CONST_STR which returned a const char[], but it had two problems:
- it wasn't possible to statically concatanate this array with a normal string
- gcc wasn't really able to optimize this, and generated code to perform the
"conversion" at runtime.
Because of this, even our own code in coredumpctl wasn't using
SD_ID128_CONST_STR.
Add a new macro to generate a constant string: SD_ID128_MAKE_STR.
It is not as elegant as SD_ID128_CONST_STR, because it requires a repetition
of the numbers, but in practice it is more convenient to use, and allows gcc
to generate smarter code:
$ size .libs/systemd{,-logind,-journald}{.old,}
text data bss dec hex filename
1265204 149564 4808 1419576 15a938 .libs/systemd.old
1260268 149564 4808 1414640 1595f0 .libs/systemd
246805 13852 209 260866 3fb02 .libs/systemd-logind.old
240973 13852 209 255034 3e43a .libs/systemd-logind
146839 4984 34 151857 25131 .libs/systemd-journald.old
146391 4984 34 151409 24f71 .libs/systemd-journald
It is also much easier to check if a certain binary uses a certain MESSAGE_ID:
$ strings .libs/systemd.old|grep MESSAGE_ID
MESSAGE_ID=%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x
MESSAGE_ID=%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x
MESSAGE_ID=%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x
MESSAGE_ID=%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x
$ strings .libs/systemd|grep MESSAGE_ID
MESSAGE_ID=c7a787079b354eaaa9e77b371893cd27
MESSAGE_ID=b07a249cd024414a82dd00cd181378ff
MESSAGE_ID=641257651c1b4ec9a8624d7a40a9e1e7
MESSAGE_ID=de5b426a63be47a7b6ac3eaac82e2f6f
MESSAGE_ID=d34d037fff1847e6ae669a370e694725
MESSAGE_ID=7d4958e842da4a758f6c1cdc7b36dcc5
MESSAGE_ID=1dee0369c7fc4736b7099b38ecb46ee7
MESSAGE_ID=39f53479d3a045ac8e11786248231fbf
MESSAGE_ID=be02cf6855d2428ba40df7e9d022f03d
MESSAGE_ID=7b05ebc668384222baa8881179cfda54
MESSAGE_ID=9d1aaa27d60140bd96365438aad20286
2016-11-06 18:48:23 +01:00
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/* Helper to prepare various field for structured logging */
|
2014-11-28 02:05:14 +01:00
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#define LOG_MESSAGE(fmt, ...) "MESSAGE=" fmt, ##__VA_ARGS__
|
2014-02-10 02:08:55 +01:00
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void log_received_signal(int level, const struct signalfd_siginfo *si);
|
2014-08-11 20:08:08 +02:00
|
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|
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void log_set_upgrade_syslog_to_journal(bool b);
|
2017-02-21 17:57:55 +01:00
|
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|
void log_set_always_reopen_console(bool b);
|
2015-04-21 17:26:04 +02:00
|
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|
int log_syntax_internal(
|
|
|
|
const char *unit,
|
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|
|
int level,
|
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|
const char *config_file,
|
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|
|
unsigned config_line,
|
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|
|
int error,
|
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|
const char *file,
|
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|
int line,
|
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|
const char *func,
|
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|
|
const char *format, ...) _printf_(9, 10);
|
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|
#define log_syntax(unit, level, config_file, config_line, error, ...) \
|
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|
|
({ \
|
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|
|
int _level = (level), _e = (error); \
|
|
|
|
(log_get_max_level() >= LOG_PRI(_level)) \
|
|
|
|
? log_syntax_internal(unit, _level, config_file, config_line, _e, __FILE__, __LINE__, __func__, __VA_ARGS__) \
|
|
|
|
: -abs(_e); \
|
|
|
|
})
|
2015-09-30 20:07:24 +02:00
|
|
|
|
|
|
|
#define log_syntax_invalid_utf8(unit, level, config_file, config_line, rvalue) \
|
|
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|
({ \
|
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|
int _level = (level); \
|
|
|
|
if (log_get_max_level() >= LOG_PRI(_level)) { \
|
|
|
|
_cleanup_free_ char *_p = NULL; \
|
|
|
|
_p = utf8_escape_invalid(rvalue); \
|
|
|
|
log_syntax_internal(unit, _level, config_file, config_line, 0, __FILE__, __LINE__, __func__, \
|
|
|
|
"String is not UTF-8 clean, ignoring assignment: %s", strna(_p)); \
|
|
|
|
} \
|
|
|
|
})
|