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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <stdarg.h>
#include <sys/cdefs.h>
__BEGIN_DECLS
struct syslog_data {
char const* ident;
int logopt;
int facility;
int maskpri;
};
/* The severity of the message. This is ordered. */
#define LOG_EMERG 0
#define LOG_ALERT 1
#define LOG_CRIT 2
#define LOG_ERR 3
#define LOG_WARNING 4
#define LOG_NOTICE 5
#define LOG_INFO 6
#define LOG_DEBUG 7
/* Macros for masking out the priority of a combined priority */
#define LOG_PRIMASK (7)
#define LOG_PRI(priority) ((priority)&LOG_PRIMASK)
/*
* Many of these facilities don't really make sense anymore, but we keep them
* for compatibility purposes.
*/
#define LOG_KERN (0 << 3)
#define LOG_USER (1 << 3)
#define LOG_MAIL (2 << 3)
#define LOG_DAEMON (3 << 3)
#define LOG_AUTH (4 << 3)
#define LOG_SYSLOG (5 << 3)
#define LOG_LPR (6 << 3)
#define LOG_NEWS (7 << 3)
#define LOG_UUCP (8 << 3)
#define LOG_CRON (9 << 3)
#define LOG_AUTHPRIV (10 << 3)
#define LOG_FTP (11 << 3)
/* glibc and OpenBSD reserve 12..15 for future system usage, we will too */
#define LOG_LOCAL0 (16 << 3)
#define LOG_LOCAL1 (17 << 3)
#define LOG_LOCAL2 (18 << 3)
#define LOG_LOCAL3 (19 << 3)
#define LOG_LOCAL4 (20 << 3)
#define LOG_LOCAL5 (21 << 3)
#define LOG_LOCAL6 (22 << 3)
#define LOG_LOCAL7 (23 << 3)
#define LOG_NFACILITIES 24
/* Macros to get the facility from a combined priority. */
#define LOG_FACMASK (~7)
#define LOG_FAC(priority) (((priority)&LOG_FACMASK) >> 3)
/* For masking logs, we use these macros with just the priority. */
#define LOG_MASK(priority) (1 << (priority))
#define LOG_UPTO(priority) (LOG_MASK(priority) + (LOG_MASK(priority) - 1))
/* Macro to make a combined priority. */
#define LOG_MAKEPRI(facility, priority) ((facility) | (priority))
/* Include a PID with the message. */
#define LOG_PID (1 << 0)
/* Log on the console. */
#define LOG_CONS (1 << 1)
/* Open the syslogd connection at the first call. (not implemented, default) */
#define LOG_ODELAY (1 << 2)
/* Open the syslogd connection immediately. (not implemented) */
#define LOG_NDELAY (1 << 3)
/* Log to stderr as well. */
#define LOG_PERROR (1 << 4)
/* Don't wait for child processes created while logging the message. */
#define LOG_NOWAIT (1 << 5)
/* This is useful to have, but has to be stored weirdly for compatibility. */
#ifdef SYSLOG_NAMES
/* Used for marking the fallback; some applications check for these defines. */
# define INTERNAL_NOPRI 0x10
# define INTERNAL_MARK LOG_MAKEPRI(LOG_NFACILITIES << 3, 0)
typedef struct _code {
/*
* Most Unices define this as char*, but in C++, we have to define it as a
* const char* if we want to use string constants.
*/
char const* c_name;
int c_val;
} CODE;
/*
* The names we use are the same as what glibc and OpenBSD use. We omit
* deprecated values in the hope that no one uses them. Sorted, as well.
*/
CODE prioritynames[] = {
{ "alert", LOG_ALERT },
{ "crit", LOG_CRIT },
{ "debug", LOG_DEBUG },
{ "emerg", LOG_EMERG },
{ "err", LOG_ERR },
{ "info", LOG_INFO },
/* Fallback */
{ "none", INTERNAL_NOPRI },
{ "notice", LOG_NOTICE },
{ "warning", LOG_WARNING },
{ NULL, -1 },
};
CODE facilitynames[] = {
{ "auth", LOG_AUTH },
{ "authpriv", LOG_AUTHPRIV },
{ "cron", LOG_CRON },
{ "daemon", LOG_DAEMON },
{ "ftp", LOG_FTP },
{ "kern", LOG_KERN },
{ "local0", LOG_LOCAL0 },
{ "local1", LOG_LOCAL1 },
{ "local2", LOG_LOCAL2 },
{ "local3", LOG_LOCAL3 },
{ "local4", LOG_LOCAL4 },
{ "local5", LOG_LOCAL5 },
{ "local6", LOG_LOCAL6 },
{ "local7", LOG_LOCAL7 },
{ "lpr", LOG_LPR },
{ "mail", LOG_MAIL },
/* Fallback */
{ "mark", INTERNAL_MARK },
{ "news", LOG_NEWS },
{ "syslog", LOG_SYSLOG },
{ "user", LOG_USER },
{ "uucp", LOG_UUCP },
{ NULL, -1 },
};
#endif
/* The re-entrant versions are an OpenBSD extension we also implement. */
void syslog(int, char const*, ...);
void syslog_r(int, struct syslog_data*, char const*, ...);
void vsyslog(int, char const* message, va_list);
void vsyslog_r(int, struct syslog_data* data, char const* message, va_list);
void openlog(char const*, int, int);
void openlog_r(char const*, int, int, struct syslog_data*);
void closelog(void);
void closelog_r(struct syslog_data*);
int setlogmask(int);
int setlogmask_r(int, struct syslog_data*);
__END_DECLS
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