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After commit15001b39ef("conf: set the log level much earlier"), we had a phase during initialisation when messages wouldn't be printed to standard error anymore. Commitf67238aa86("passt, log: Call __openlog() earlier, log to stderr until we detach") fixed that, but only for the case where no log files are given. If a log file is configured, vlogmsg() will not call passt_vsyslog(), but during initialisation, LOG_PERROR is set, so to avoid duplicated prints (which would result from passt_vsyslog() printing to stderr), we don't call fprintf() from vlogmsg() either. This is getting a bit too complicated. Instead of abusing LOG_PERROR, define an internal logging flag that clearly represents that we're not done with the initialisation phase yet. If this flag is not set, make sure we always print to stderr, if the log mask matches. Reported-by: Yalan Zhang <yalzhang@redhat.com> Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright (c) 2022 Red Hat GmbH
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* Author: Stefano Brivio <sbrivio@redhat.com>
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*/
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#ifndef LOG_H
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#define LOG_H
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#include <stdbool.h>
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#include <syslog.h>
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#define LOGFILE_SIZE_DEFAULT (1024 * 1024UL)
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#define LOGFILE_CUT_RATIO 30 /* When full, cut ~30% size */
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#define LOGFILE_SIZE_MIN (5UL * MAX(BUFSIZ, PAGE_SIZE))
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void vlogmsg(int pri, const char *format, va_list ap);
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void logmsg(int pri, const char *format, ...)
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__attribute__((format(printf, 2, 3)));
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#define err(...) logmsg(LOG_ERR, __VA_ARGS__)
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#define warn(...) logmsg(LOG_WARNING, __VA_ARGS__)
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#define info(...) logmsg(LOG_INFO, __VA_ARGS__)
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#define debug(...) logmsg(LOG_DEBUG, __VA_ARGS__)
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#define die(...) \
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do { \
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err(__VA_ARGS__); \
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exit(EXIT_FAILURE); \
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} while (0)
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extern int log_trace;
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extern bool log_conf_parsed;
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extern bool log_runtime;
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void trace_init(int enable);
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#define trace(...) \
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do { \
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if (log_trace) \
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debug(__VA_ARGS__); \
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} while (0)
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void __openlog(const char *ident, int option, int facility);
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void logfile_init(const char *name, const char *path, size_t size);
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void passt_vsyslog(int pri, const char *format, va_list ap);
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void logfile_write(int pri, const char *format, va_list ap);
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void __setlogmask(int mask);
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#endif /* LOG_H */
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