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https://github.com/RGBCube/serenity
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bbee1c5b98
This is an implementation of syslog with some OpenBSD extensions. There is no syslogd support (so it only logs to dbgprintf/stderr), but otherwise is functional. Many weird defines are always present, because some syslog users in the wild check for their existence.
151 lines
4.3 KiB
C
151 lines
4.3 KiB
C
#pragma once
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#include <stdarg.h>
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__BEGIN_DECLS
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struct syslog_data {
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const char* ident;
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int logopt;
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int facility;
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int maskpri;
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};
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/* The severity of the message. This is ordered. */
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#define LOG_EMERG 0
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#define LOG_ALERT 1
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#define LOG_CRIT 2
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#define LOG_ERR 3
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#define LOG_WARNING 4
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#define LOG_NOTICE 5
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#define LOG_INFO 6
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#define LOG_DEBUG 7
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/* Macros for masking out the priority of a combined priority */
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#define LOG_PRIMASK (7)
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#define LOG_PRI(priority) ((priority) & LOG_PRIMASK)
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/*
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* Many of these facilities don't really make sense anymore, but we keep them
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* for compatability purposes.
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*/
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#define LOG_KERN ( 0 << 3)
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#define LOG_USER ( 1 << 3)
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#define LOG_MAIL ( 2 << 3)
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#define LOG_DAEMON ( 3 << 3)
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#define LOG_AUTH ( 4 << 3)
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#define LOG_SYSLOG ( 5 << 3)
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#define LOG_LPR ( 6 << 3)
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#define LOG_NEWS ( 7 << 3)
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#define LOG_UUCP ( 8 << 3)
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#define LOG_CRON ( 9 << 3)
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#define LOG_AUTHPRIV (10 << 3)
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#define LOG_FTP (11 << 3)
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/* glibc and OpenBSD reserve 12..15 for future system usage, we will too */
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#define LOG_LOCAL0 (16 << 3)
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#define LOG_LOCAL1 (17 << 3)
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#define LOG_LOCAL2 (18 << 3)
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#define LOG_LOCAL3 (19 << 3)
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#define LOG_LOCAL4 (20 << 3)
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#define LOG_LOCAL5 (21 << 3)
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#define LOG_LOCAL6 (22 << 3)
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#define LOG_LOCAL7 (23 << 3)
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#define LOG_NFACILITIES 24
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/* Macros to get the facility from a combined priority. */
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#define LOG_FACMASK (~7)
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#define LOG_FAC(priority) (((priority) & LOG_FACMASK) >> 3)
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/* For masking logs, we use these macros with just the priority. */
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#define LOG_MASK(priority) (1 << (priority))
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#define LOG_UPTO(priority) (LOG_MASK(priority) + (LOG_MASK(priority) - 1))
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/* Macro to make a combined priority. */
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#define LOG_MAKEPRI(facility, priority) ((facility) | (priority))
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/* Include a PID with the message. */
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#define LOG_PID (1 << 0)
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/* Log on the console. */
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#define LOG_CONS (1 << 1)
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/* Open the syslogd connection at the first call. (not implemented, default) */
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#define LOG_ODELAY (1 << 2)
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/* Open the syslogd connection immediately. (not implemented) */
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#define LOG_NDELAY (1 << 3)
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/* Log to stderr as well. */
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#define LOG_PERROR (1 << 4)
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/* This is useful to have, but has to be stored weirdly for compatibility. */
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#ifdef SYSLOG_NAMES
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/* Used for marking the fallback; some applications check for these defines. */
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# define INTERNAL_NOPRI 0x10
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# define INTERNAL_MARK LOG_MAKEPRI(LOG_NFACILITIES << 3, 0)
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typedef struct _code {
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/*
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* Most Unices define this as char*, but in C++, we have to define it as a
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* const char* if we want to use string constants.
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*/
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const char* c_name;
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int c_val;
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} CODE;
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/*
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* The names we use are the same as what glibc and OpenBSD use. We omit
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* deprecated values in the hope that no one uses them. Sorted, as well.
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*/
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CODE prioritynames[] = {
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{ "alert", LOG_ALERT },
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{ "crit", LOG_CRIT },
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{ "debug", LOG_DEBUG },
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{ "emerg", LOG_EMERG },
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{ "err", LOG_ERR },
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{ "info", LOG_INFO },
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/* Fallback */
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{ "none", INTERNAL_NOPRI },
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{ "notice", LOG_NOTICE },
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{ "warning", LOG_WARNING },
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{ NULL, -1 },
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};
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CODE facilitynames[] = {
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{ "auth", LOG_AUTH },
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{ "authpriv", LOG_AUTHPRIV },
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{ "cron", LOG_CRON },
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{ "daemon", LOG_DAEMON },
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{ "ftp", LOG_FTP },
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{ "kern", LOG_KERN },
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{ "local0", LOG_LOCAL0 },
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{ "local1", LOG_LOCAL1 },
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{ "local2", LOG_LOCAL2 },
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{ "local3", LOG_LOCAL3 },
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{ "local4", LOG_LOCAL4 },
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{ "local5", LOG_LOCAL5 },
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{ "local6", LOG_LOCAL6 },
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{ "local7", LOG_LOCAL7 },
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{ "lpr", LOG_LPR },
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{ "mail", LOG_MAIL },
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/* Fallback */
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{ "mark", INTERNAL_MARK },
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{ "news", LOG_NEWS },
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{ "syslog", LOG_SYSLOG },
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{ "user", LOG_USER },
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{ "uucp", LOG_UUCP },
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{ NULL, -1 },
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};
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#endif
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/* The re-entrant versions are an OpenBSD extension we also implement. */
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void syslog(int, const char*, ...);
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void syslog_r(int, struct syslog_data*, const char*, ...);
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void vsyslog(int, const char* message, va_list);
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void vsyslog_r(int, struct syslog_data* data, const char* message, va_list);
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void openlog(const char*, int, int);
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void openlog_r(const char*, int, int, struct syslog_data*);
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void closelog(void);
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void closelog_r(struct syslog_data*);
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int setlogmask(int);
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int setlogmask_r(int, struct syslog_data*);
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__END_DECLS
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