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/* SPDX-License-Identifier: GPL-2.0-or-later
 * Copyright (c) 2022 Red Hat GmbH
 * Author: Stefano Brivio <sbrivio@redhat.com>
 */

#ifndef LOG_H
#define LOG_H

#include <stdint.h>
#include <syslog.h>

#define LOG_FLAG_CONF_PARSED	BIT(0)	/* We already parsed logging options */
#define LOG_FLAG_DAEMON_READY	BIT(1)	/* Daemonised, or ready in foreground */

#define LOGFILE_SIZE_DEFAULT		(1024 * 1024UL)
#define LOGFILE_CUT_RATIO		30	/* When full, cut ~30% size */
#define LOGFILE_SIZE_MIN		(5UL * MAX(BUFSIZ, PAGE_SIZE))

void vlogmsg(int pri, const char *format, va_list ap);
void logmsg(int pri, const char *format, ...)
	__attribute__((format(printf, 2, 3)));
void logmsg_perror(int pri, const char *format, ...)
	__attribute__((format(printf, 2, 3)));

#define err(...)		logmsg(		LOG_ERR,	__VA_ARGS__)
#define warn(...)		logmsg(		LOG_WARNING,	__VA_ARGS__)
#define info(...)		logmsg(		LOG_INFO,	__VA_ARGS__)
#define debug(...)		logmsg(		LOG_DEBUG,	__VA_ARGS__)

#define err_perror(...)		logmsg_perror(	LOG_ERR,	__VA_ARGS__)
#define warn_perror(...)	logmsg_perror(	LOG_WARNING,	__VA_ARGS__)
#define info_perror(...)	logmsg_perror(	LOG_INFO,	__VA_ARGS__)
#define debug_perror(...)	logmsg_perror(	LOG_DEBUG,	__VA_ARGS__)

#define die(...)							\
	do {								\
		err(__VA_ARGS__);					\
		exit(EXIT_FAILURE);					\
	} while (0)

#define die_perror(...)							\
	do {								\
		err_perror(__VA_ARGS__);				\
		exit(EXIT_FAILURE);					\
	} while (0)

extern int log_trace;
void trace_init(int enable);
#define trace(...)							\
	do {								\
		if (log_trace)						\
			debug(__VA_ARGS__);				\
	} while (0)

void __openlog(const char *ident, int option, int facility);
void logfile_init(const char *name, const char *path, size_t size);
void passt_vsyslog(int pri, const char *format, va_list ap);
void logfile_write(int pri, const char *format, va_list ap);
void __setlogmask(int mask);
void log_set_flag(uint8_t flag);

#endif /* LOG_H */

debug log:

solving 5be0be9 ...
found 5be0be9 in https://archives.passt.top/passt-dev/20240617120319.1206857-5-sbrivio@redhat.com/
found 680baab in https://archives.passt.top/passt-dev/20240617120319.1206857-4-sbrivio@redhat.com/
found 6a3224a in https://archives.passt.top/passt-dev/20240617120319.1206857-3-sbrivio@redhat.com/
found e0aab5a in https://passt.top/passt
preparing index
index prepared:
100644 e0aab5a9dc9a501843ac13a4f2efd95ce62e2f80	log.h

applying [1/3] https://archives.passt.top/passt-dev/20240617120319.1206857-3-sbrivio@redhat.com/
diff --git a/log.h b/log.h
index e0aab5a..6a3224a 100644


applying [2/3] https://archives.passt.top/passt-dev/20240617120319.1206857-4-sbrivio@redhat.com/
diff --git a/log.h b/log.h
index 6a3224a..680baab 100644


applying [3/3] https://archives.passt.top/passt-dev/20240617120319.1206857-5-sbrivio@redhat.com/
diff --git a/log.h b/log.h
index 680baab..5be0be9 100644

Checking patch log.h...
Applied patch log.h cleanly.
Checking patch log.h...
Applied patch log.h cleanly.
Checking patch log.h...
Applied patch log.h cleanly.

index at:
100644 5be0be92795da09c6280fb8e63913d1e640f22dd	log.h

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