mirror of https://gerrit.osmocom.org/libosmocore
118 lines
3.1 KiB
C
118 lines
3.1 KiB
C
/*
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* (C) 2020 by Vadim Yanitskiy <axilirator@gmail.com>
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* All Rights Reserved
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*
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* SPDX-License-Identifier: GPL-2.0+
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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/*! \addtogroup logging
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* @{
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* \file logging_systemd.c */
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#include <stdio.h>
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#include <syslog.h>
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/* Do not use this file as location in sd_journal_print() */
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#define SD_JOURNAL_SUPPRESS_LOCATION
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#include <systemd/sd-journal.h>
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#include <osmocom/core/talloc.h>
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#include <osmocom/core/utils.h>
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#include <osmocom/core/logging.h>
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/* FIXME: copy-pasted from logging_syslog.c */
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static int logp2syslog_level(unsigned int level)
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{
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if (level >= LOGL_FATAL)
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return LOG_CRIT;
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else if (level >= LOGL_ERROR)
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return LOG_ERR;
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else if (level >= LOGL_NOTICE)
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return LOG_NOTICE;
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else if (level >= LOGL_INFO)
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return LOG_INFO;
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else
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return LOG_DEBUG;
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}
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static void _systemd_output(struct log_target *target,
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unsigned int level, const char *log)
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{
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/* systemd accepts the same level constants as syslog */
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sd_journal_print(logp2syslog_level(level), "%s", log);
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}
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static void _systemd_raw_output(struct log_target *target, int subsys,
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unsigned int level, const char *file,
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int line, int cont, const char *format,
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va_list ap)
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{
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char buf[4096];
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int rc;
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rc = vsnprintf(buf, sizeof(buf), format, ap);
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if (rc < 0) {
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sd_journal_print(LOG_ERR, "vsnprintf() failed to render a message "
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"originated from %s:%d (rc=%d)\n",
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file, line, rc);
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return;
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}
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sd_journal_send("CODE_FILE=%s, CODE_LINE=%d", file, line,
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"PRIORITY=%d", logp2syslog_level(level),
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"OSMO_SUBSYS=%s", log_category_name(subsys),
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"OSMO_SUBSYS_HEX=%4.4x", subsys,
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"MESSAGE=%s", buf,
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NULL);
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}
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/*! Create a new logging target for systemd journal logging.
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* \param[in] raw whether to offload rendering of the meta information
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* (location, category) to systemd-journal.
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* \returns Log target in case of success, NULL in case of error.
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*/
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struct log_target *log_target_create_systemd(bool raw)
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{
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struct log_target *target;
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target = log_target_create();
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if (!target)
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return NULL;
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target->type = LOG_TGT_TYPE_SYSTEMD;
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log_target_systemd_set_raw(target, raw);
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return target;
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}
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/*! Change meta information handling of an existing logging target.
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* \param[in] target logging target to be modified.
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* \param[in] raw whether to offload rendering of the meta information
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* (location, category) to systemd-journal.
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*/
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void log_target_systemd_set_raw(struct log_target *target, bool raw)
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{
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target->sd_journal.raw = raw;
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if (raw) {
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target->raw_output = _systemd_raw_output;
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target->output = NULL;
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} else {
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target->output = _systemd_output;
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target->raw_output = NULL;
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}
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}
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/* @} */
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