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/***
This file is part of eudev, forked from systemd.
Copyright 2010 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#pragma once
#include <stdbool.h>
#include <stdarg.h>
#include <syslog.h>
#include <errno.h>
#include "macro.h"
typedef enum LogTarget{
LOG_TARGET_CONSOLE,
LOG_TARGET_KMSG,
LOG_TARGET_JOURNAL,
LOG_TARGET_JOURNAL_OR_KMSG,
LOG_TARGET_SYSLOG,
LOG_TARGET_SYSLOG_OR_KMSG,
LOG_TARGET_AUTO, /* console if stderr is tty, JOURNAL_OR_KMSG otherwise */
LOG_TARGET_SAFE, /* console if stderr is tty, KMSG otherwise */
LOG_TARGET_NULL,
_LOG_TARGET_MAX,
_LOG_TARGET_INVALID = -1
} LogTarget;
void log_set_target(LogTarget target);
void log_set_max_level(int level);
int log_get_max_level(void) _pure_;
int log_open(void);
void log_close(void);
void log_close_syslog(void);
void log_close_journal(void);
void log_close_kmsg(void);
void log_close_console(void);
int log_internal(
int level,
int error,
const char *file,
int line,
const char *func,
const char *format, ...) _printf_(6,7);
int log_internalv(
int level,
int error,
const char *file,
int line,
const char *func,
const char *format,
va_list ap) _printf_(6,0);
int log_oom_internal(
const char *file,
int line,
const char *func);
/* Logging for various assertions */
noreturn void log_assert_failed(
const char *text,
const char *file,
int line,
const char *func);
noreturn void log_assert_failed_unreachable(
const char *text,
const char *file,
int line,
const char *func);
/* Logging with level */
#define log_full_errno(level, error, ...) \
({ \
int _l = (level), _e = (error); \
(log_get_max_level() >= _l) \
? log_internal(_l, _e, __FILE__, __LINE__, __func__, __VA_ARGS__) \
: -abs(_e); \
})
#define log_full(level, ...) log_full_errno(level, 0, __VA_ARGS__)
/* Normal logging */
#define log_debug(...) log_full(LOG_DEBUG, __VA_ARGS__)
#define log_info(...) log_full(LOG_INFO, __VA_ARGS__)
#define log_notice(...) log_full(LOG_NOTICE, __VA_ARGS__)
#define log_warning(...) log_full(LOG_WARNING, __VA_ARGS__)
#define log_error(...) log_full(LOG_ERR, __VA_ARGS__)
#define log_emergency(...) log_full(getpid() == 1 ? LOG_EMERG : LOG_ERR, __VA_ARGS__)
/* Logging triggered by an errno-like error */
#define log_debug_errno(error, ...) log_full_errno(LOG_DEBUG, error, __VA_ARGS__)
#define log_info_errno(error, ...) log_full_errno(LOG_INFO, error, __VA_ARGS__)
#define log_notice_errno(error, ...) log_full_errno(LOG_NOTICE, error, __VA_ARGS__)
#define log_warning_errno(error, ...) log_full_errno(LOG_WARNING, error, __VA_ARGS__)
#define log_error_errno(error, ...) log_full_errno(LOG_ERR, error, __VA_ARGS__)
#define log_emergency_errno(error, ...) log_full_errno(getpid() == 1 ? LOG_EMERG : LOG_ERR, error, __VA_ARGS__)
#ifdef LOG_TRACE
# define log_trace(...) log_debug(__VA_ARGS__)
#else
# define log_trace(...) do {} while(0)
#endif
/* This modifies the buffer passed! */
#define log_oom() log_oom_internal(__FILE__, __LINE__, __func__)
const char *log_target_to_string(LogTarget target) _const_;
LogTarget log_target_from_string(const char *s) _pure_;
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