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/*
* log - print and/or log messages
*
* Copyright 2011 Enrico Zini <[email protected]>
*
* 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 NODM_LOG_H
#define NODM_LOG_H
#include <stdbool.h>
/// Logging configuration
struct log_config
{
/// The program name to use in error messages
const char* program_name;
/// Log to syslog
bool log_to_syslog;
/// Log to stderr
bool log_to_stderr;
/**
* Log level:
* 1. errors
* 2. warnings
* 3. info
* 4. verbose
*/
enum {
NODM_LL_ERR = 1,
NODM_LL_WARN = 2,
NODM_LL_INFO = 3,
NODM_LL_VERB = 4
} log_level;
};
/**
* Initialise log configuration with default values
*/
void log_config_init(struct log_config* conf);
/**
* Start the logging system
*
* @param conf
* The logging configuration. Note that it only stores a copy of the pointer,
* but does not make a copy of the structure, so you need to make sure that
* the string remains valid until log_end() is called.
*/
void log_start(const struct log_config* conf);
/**
* Shut down the logging system.
*
* This should also be called after each fork.
*/
void log_end();
// Note: all log functions return true if the message was logged, false
// otherwise. This can be used to test for log levels: if (log_verb(NULL)) { /*
// complex debugging code */ }
/// Log a message about the trivial normal progress of things
bool log_verb(const char* fmt, ...);
/// Log a message about the relevant normal progress of things
bool log_info(const char* fmt, ...);
/// Log a warning message
bool log_warn(const char* fmt, ...);
/// Log an error message
bool log_err(const char* fmt, ...);
#endif
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