mirror of https://gerrit.osmocom.org/libosmocore
1052 lines
29 KiB
C
1052 lines
29 KiB
C
/*! \file logging.c
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* Debugging/Logging support code. */
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/*
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* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org>
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* (C) 2008 by Holger Hans Peter Freyther <zecke@selfish.org>
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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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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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/*! \addtogroup logging
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* @{
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* libosmocore Logging sub-system
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*
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* \file logging.c */
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#include "../config.h"
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#include <stdarg.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#ifdef HAVE_STRINGS_H
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#include <strings.h>
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#endif
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#include <time.h>
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#include <sys/time.h>
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#include <errno.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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#include <osmocom/core/timer.h>
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#include <osmocom/vty/logging.h> /* for LOGGING_STR. */
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osmo_static_assert(_LOG_CTX_COUNT <= ARRAY_SIZE(((struct log_context*)NULL)->ctx),
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enum_logging_ctx_items_fit_in_struct_log_context);
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osmo_static_assert(_LOG_FLT_COUNT <= ARRAY_SIZE(((struct log_target*)NULL)->filter_data),
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enum_logging_filters_fit_in_log_target_filter_data);
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osmo_static_assert(_LOG_FLT_COUNT <= 8*sizeof(((struct log_target*)NULL)->filter_map),
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enum_logging_filters_fit_in_log_target_filter_map);
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struct log_info *osmo_log_info;
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static struct log_context log_context;
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void *tall_log_ctx = NULL;
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LLIST_HEAD(osmo_log_target_list);
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const struct value_string loglevel_strs[] = {
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{ LOGL_DEBUG, "DEBUG" },
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{ LOGL_INFO, "INFO" },
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{ LOGL_NOTICE, "NOTICE" },
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{ LOGL_ERROR, "ERROR" },
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{ LOGL_FATAL, "FATAL" },
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{ 0, NULL },
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};
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#define INT2IDX(x) (-1*(x)-1)
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static const struct log_info_cat internal_cat[OSMO_NUM_DLIB] = {
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[INT2IDX(DLGLOBAL)] = { /* -1 becomes 0 */
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.name = "DLGLOBAL",
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.description = "Library-internal global log family",
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.loglevel = LOGL_NOTICE,
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.enabled = 1,
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},
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[INT2IDX(DLLAPD)] = { /* -2 becomes 1 */
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.name = "DLLAPD",
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.description = "LAPD in libosmogsm",
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.loglevel = LOGL_NOTICE,
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.enabled = 1,
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},
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[INT2IDX(DLINP)] = {
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.name = "DLINP",
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.description = "A-bis Intput Subsystem",
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.loglevel = LOGL_NOTICE,
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.enabled = 1,
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},
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[INT2IDX(DLMUX)] = {
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.name = "DLMUX",
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.description = "A-bis B-Subchannel TRAU Frame Multiplex",
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.loglevel = LOGL_NOTICE,
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.enabled = 1,
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},
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[INT2IDX(DLMI)] = {
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.name = "DLMI",
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.description = "A-bis Input Driver for Signalling",
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.enabled = 0, .loglevel = LOGL_NOTICE,
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},
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[INT2IDX(DLMIB)] = {
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.name = "DLMIB",
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.description = "A-bis Input Driver for B-Channels (voice)",
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.enabled = 0, .loglevel = LOGL_NOTICE,
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},
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[INT2IDX(DLSMS)] = {
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.name = "DLSMS",
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.description = "Layer3 Short Message Service (SMS)",
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.enabled = 1, .loglevel = LOGL_NOTICE,
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.color = "\033[1;38m",
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},
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[INT2IDX(DLCTRL)] = {
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.name = "DLCTRL",
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.description = "Control Interface",
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.enabled = 1, .loglevel = LOGL_NOTICE,
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},
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[INT2IDX(DLGTP)] = {
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.name = "DLGTP",
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.description = "GPRS GTP library",
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.enabled = 1, .loglevel = LOGL_NOTICE,
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},
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[INT2IDX(DLSTATS)] = {
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.name = "DLSTATS",
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.description = "Statistics messages and logging",
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.enabled = 1, .loglevel = LOGL_NOTICE,
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},
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[INT2IDX(DLGSUP)] = {
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.name = "DLGSUP",
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.description = "Generic Subscriber Update Protocol",
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.enabled = 1, .loglevel = LOGL_NOTICE,
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},
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[INT2IDX(DLOAP)] = {
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.name = "DLOAP",
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.description = "Osmocom Authentication Protocol",
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.enabled = 1, .loglevel = LOGL_NOTICE,
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},
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[INT2IDX(DLSS7)] = {
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.name = "DLSS7",
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.description = "libosmo-sigtran Signalling System 7",
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.enabled = 1, .loglevel = LOGL_NOTICE,
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},
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[INT2IDX(DLSCCP)] = {
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.name = "DLSCCP",
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.description = "libosmo-sigtran SCCP Implementation",
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.enabled = 1, .loglevel = LOGL_NOTICE,
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},
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[INT2IDX(DLSUA)] = {
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.name = "DLSUA",
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.description = "libosmo-sigtran SCCP User Adaptation",
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.enabled = 1, .loglevel = LOGL_NOTICE,
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},
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[INT2IDX(DLM3UA)] = {
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.name = "DLM3UA",
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.description = "libosmo-sigtran MTP3 User Adaptation",
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.enabled = 1, .loglevel = LOGL_NOTICE,
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},
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[INT2IDX(DLMGCP)] = {
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.name = "DLMGCP",
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.description = "libosmo-mgcp Media Gateway Control Protocol",
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.enabled = 1, .loglevel = LOGL_NOTICE,
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},
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[INT2IDX(DLJIBUF)] = {
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.name = "DLJIBUF",
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.description = "libosmo-netif Jitter Buffer",
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.enabled = 1, .loglevel = LOGL_NOTICE,
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},
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[INT2IDX(DLRSPRO)] = {
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.name = "DLRSPRO",
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.description = "Remote SIM protocol",
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.enabled = 1, .loglevel = LOGL_NOTICE,
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},
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};
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void assert_loginfo(const char *src)
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{
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if (!osmo_log_info) {
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fprintf(stderr, "ERROR: osmo_log_info == NULL! "
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"You must call log_init() before using logging in %s()!\n", src);
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OSMO_ASSERT(osmo_log_info);
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}
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}
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/* special magic for negative (library-internal) log subsystem numbers */
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static int subsys_lib2index(int subsys)
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{
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return (subsys * -1) + (osmo_log_info->num_cat_user-1);
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}
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/*! Parse a human-readable log level into a numeric value
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* \param[in] lvl zero-terminated string containing log level name
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* \returns numeric log level
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*/
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int log_parse_level(const char *lvl)
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{
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return get_string_value(loglevel_strs, lvl);
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}
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/*! convert a numeric log level into human-readable string
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* \param[in] lvl numeric log level
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* \returns zero-terminated string (log level name)
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*/
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const char *log_level_str(unsigned int lvl)
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{
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return get_value_string(loglevel_strs, lvl);
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}
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/*! parse a human-readable log category into numeric form
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* \param[in] category human-readable log category name
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* \returns numeric category value, or -EINVAL otherwise
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*/
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int log_parse_category(const char *category)
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{
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int i;
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assert_loginfo(__func__);
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for (i = 0; i < osmo_log_info->num_cat; ++i) {
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if (osmo_log_info->cat[i].name == NULL)
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continue;
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if (!strcasecmp(osmo_log_info->cat[i].name+1, category))
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return i;
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}
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return -EINVAL;
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}
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/*! parse the log category mask
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* \param[in] target log target to be configured
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* \param[in] _mask log category mask string
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*
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* The format can be this: category1:category2:category3
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* or category1,2:category2,3:...
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*/
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void log_parse_category_mask(struct log_target* target, const char *_mask)
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{
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int i = 0;
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char *mask = strdup(_mask);
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char *category_token = NULL;
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assert_loginfo(__func__);
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/* Disable everything to enable it afterwards */
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for (i = 0; i < osmo_log_info->num_cat; ++i)
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target->categories[i].enabled = 0;
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category_token = strtok(mask, ":");
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OSMO_ASSERT(category_token);
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do {
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for (i = 0; i < osmo_log_info->num_cat; ++i) {
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size_t length, cat_length;
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char* colon = strstr(category_token, ",");
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if (!osmo_log_info->cat[i].name)
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continue;
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length = strlen(category_token);
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cat_length = strlen(osmo_log_info->cat[i].name);
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/* Use longest length not to match subocurrences. */
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if (cat_length > length)
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length = cat_length;
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if (colon)
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length = colon - category_token;
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if (strncasecmp(osmo_log_info->cat[i].name,
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category_token, length) == 0) {
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int level = 0;
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if (colon)
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level = atoi(colon+1);
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target->categories[i].enabled = 1;
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target->categories[i].loglevel = level;
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}
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}
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} while ((category_token = strtok(NULL, ":")));
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free(mask);
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}
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static const char* color(int subsys)
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{
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if (subsys < osmo_log_info->num_cat)
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return osmo_log_info->cat[subsys].color;
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return NULL;
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}
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static const struct value_string level_colors[] = {
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{ LOGL_DEBUG, "\033[1;34m" },
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{ LOGL_INFO, "\033[1;32m" },
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{ LOGL_NOTICE, "\033[1;33m" },
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{ LOGL_ERROR, "\033[1;31m" },
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{ LOGL_FATAL, "\033[1;31m" },
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{ 0, NULL }
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};
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static const char *level_color(int level)
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{
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const char *c = get_value_string_or_null(level_colors, level);
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if (!c)
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return get_value_string(level_colors, LOGL_FATAL);
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return c;
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}
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const char* log_category_name(int subsys)
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{
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if (subsys < osmo_log_info->num_cat)
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return osmo_log_info->cat[subsys].name;
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return NULL;
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}
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static const char *const_basename(const char *path)
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{
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const char *bn = strrchr(path, '/');
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if (!bn || !bn[1])
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return path;
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return bn + 1;
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}
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static void _output(struct log_target *target, unsigned int subsys,
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unsigned int level, const char *file, int line, int cont,
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const char *format, va_list ap)
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{
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char buf[4096];
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int ret, len = 0, offset = 0, rem = sizeof(buf);
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const char *c_subsys = NULL;
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/* are we using color */
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if (target->use_color) {
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c_subsys = color(subsys);
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if (c_subsys) {
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ret = snprintf(buf + offset, rem, "%s", c_subsys);
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if (ret < 0)
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goto err;
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OSMO_SNPRINTF_RET(ret, rem, offset, len);
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}
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}
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if (!cont) {
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if (target->print_ext_timestamp) {
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#ifdef HAVE_LOCALTIME_R
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struct tm tm;
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struct timeval tv;
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osmo_gettimeofday(&tv, NULL);
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localtime_r(&tv.tv_sec, &tm);
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ret = snprintf(buf + offset, rem, "%04d%02d%02d%02d%02d%02d%03d ",
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tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
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tm.tm_hour, tm.tm_min, tm.tm_sec,
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(int)(tv.tv_usec / 1000));
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if (ret < 0)
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goto err;
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OSMO_SNPRINTF_RET(ret, rem, offset, len);
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#endif
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} else if (target->print_timestamp) {
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time_t tm;
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if ((tm = time(NULL)) == (time_t) -1)
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goto err;
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/* Get human-readable representation of time.
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man ctime: we need at least 26 bytes in buf */
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if (rem < 26 || !ctime_r(&tm, buf + offset))
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goto err;
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ret = strlen(buf + offset);
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if (ret <= 0)
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goto err;
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/* Get rid of useless final '\n' added by ctime_r. We want a space instead. */
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buf[offset + ret - 1] = ' ';
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OSMO_SNPRINTF_RET(ret, rem, offset, len);
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}
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if (target->print_category) {
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ret = snprintf(buf + offset, rem, "%s%s%s%s ",
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target->use_color ? level_color(level) : "",
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log_category_name(subsys),
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target->use_color ? "\033[0;m" : "",
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c_subsys ? c_subsys : "");
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if (ret < 0)
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goto err;
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OSMO_SNPRINTF_RET(ret, rem, offset, len);
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}
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if (target->print_level) {
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ret = snprintf(buf + offset, rem, "%s%s%s%s ",
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target->use_color ? level_color(level) : "",
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log_level_str(level),
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target->use_color ? "\033[0;m" : "",
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c_subsys ? c_subsys : "");
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if (ret < 0)
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goto err;
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OSMO_SNPRINTF_RET(ret, rem, offset, len);
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}
|
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if (target->print_category_hex) {
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ret = snprintf(buf + offset, rem, "<%4.4x> ", subsys);
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if (ret < 0)
|
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goto err;
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OSMO_SNPRINTF_RET(ret, rem, offset, len);
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}
|
|
|
|
if (target->print_filename_pos == LOG_FILENAME_POS_HEADER_END) {
|
|
switch (target->print_filename2) {
|
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case LOG_FILENAME_NONE:
|
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break;
|
|
case LOG_FILENAME_PATH:
|
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ret = snprintf(buf + offset, rem, "%s:%d ", file, line);
|
|
if (ret < 0)
|
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goto err;
|
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OSMO_SNPRINTF_RET(ret, rem, offset, len);
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break;
|
|
case LOG_FILENAME_BASENAME:
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ret = snprintf(buf + offset, rem, "%s:%d ", const_basename(file), line);
|
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if (ret < 0)
|
|
goto err;
|
|
OSMO_SNPRINTF_RET(ret, rem, offset, len);
|
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break;
|
|
}
|
|
}
|
|
}
|
|
ret = vsnprintf(buf + offset, rem, format, ap);
|
|
if (ret < 0)
|
|
goto err;
|
|
OSMO_SNPRINTF_RET(ret, rem, offset, len);
|
|
|
|
/* For LOG_FILENAME_POS_LAST, print the source file info only when the caller ended the log
|
|
* message in '\n'. If so, nip the last '\n' away, insert the source file info and re-append an
|
|
* '\n'. All this to allow LOGP("start..."); LOGPC("...end\n") constructs. */
|
|
if (target->print_filename_pos == LOG_FILENAME_POS_LINE_END
|
|
&& offset > 0 && buf[offset-1] == '\n') {
|
|
switch (target->print_filename2) {
|
|
case LOG_FILENAME_NONE:
|
|
break;
|
|
case LOG_FILENAME_PATH:
|
|
offset --;
|
|
ret = snprintf(buf + offset, rem, " (%s:%d)\n", file, line);
|
|
if (ret < 0)
|
|
goto err;
|
|
OSMO_SNPRINTF_RET(ret, rem, offset, len);
|
|
break;
|
|
case LOG_FILENAME_BASENAME:
|
|
offset --;
|
|
ret = snprintf(buf + offset, rem, " (%s:%d)\n", const_basename(file), line);
|
|
if (ret < 0)
|
|
goto err;
|
|
OSMO_SNPRINTF_RET(ret, rem, offset, len);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (target->use_color) {
|
|
ret = snprintf(buf + offset, rem, "\033[0;m");
|
|
if (ret < 0)
|
|
goto err;
|
|
OSMO_SNPRINTF_RET(ret, rem, offset, len);
|
|
}
|
|
err:
|
|
buf[sizeof(buf)-1] = '\0';
|
|
target->output(target, level, buf);
|
|
}
|
|
|
|
/* Catch internal logging category indexes as well as out-of-bounds indexes.
|
|
* For internal categories, the ID is negative starting with -1; and internal
|
|
* logging categories are added behind the user categories. For out-of-bounds
|
|
* indexes, return the index of DLGLOBAL. The returned category index is
|
|
* guaranteed to exist in osmo_log_info, otherwise the program would abort,
|
|
* which should never happen unless even the DLGLOBAL category is missing. */
|
|
static inline int map_subsys(int subsys)
|
|
{
|
|
/* Note: comparing signed and unsigned integers */
|
|
|
|
if (subsys > 0 && ((unsigned int)subsys) >= osmo_log_info->num_cat_user)
|
|
subsys = DLGLOBAL;
|
|
|
|
if (subsys < 0)
|
|
subsys = subsys_lib2index(subsys);
|
|
|
|
if (subsys < 0 || subsys >= osmo_log_info->num_cat)
|
|
subsys = subsys_lib2index(DLGLOBAL);
|
|
|
|
OSMO_ASSERT(!(subsys < 0 || subsys >= osmo_log_info->num_cat));
|
|
|
|
return subsys;
|
|
}
|
|
|
|
static inline bool should_log_to_target(struct log_target *tar, int subsys,
|
|
int level)
|
|
{
|
|
struct log_category *category;
|
|
|
|
category = &tar->categories[subsys];
|
|
|
|
/* subsystem is not supposed to be logged */
|
|
if (!category->enabled)
|
|
return false;
|
|
|
|
/* Check the global log level */
|
|
if (tar->loglevel != 0 && level < tar->loglevel)
|
|
return false;
|
|
|
|
/* Check the category log level */
|
|
if (tar->loglevel == 0 && category->loglevel != 0 &&
|
|
level < category->loglevel)
|
|
return false;
|
|
|
|
/* Apply filters here... if that becomes messy we will
|
|
* need to put filters in a list and each filter will
|
|
* say stop, continue, output */
|
|
if ((tar->filter_map & (1 << LOG_FLT_ALL)) != 0)
|
|
return true;
|
|
|
|
if (osmo_log_info->filter_fn)
|
|
return osmo_log_info->filter_fn(&log_context, tar);
|
|
|
|
/* TODO: Check the filter/selector too? */
|
|
return true;
|
|
}
|
|
|
|
/*! vararg version of logging function
|
|
* \param[in] subsys Logging sub-system
|
|
* \param[in] level Log level
|
|
* \param[in] file name of source code file
|
|
* \param[in] cont continuation (1) or new line (0)
|
|
* \param[in] format format string
|
|
* \param[in] ap vararg-list containing format string arguments
|
|
*/
|
|
void osmo_vlogp(int subsys, int level, const char *file, int line,
|
|
int cont, const char *format, va_list ap)
|
|
{
|
|
struct log_target *tar;
|
|
|
|
subsys = map_subsys(subsys);
|
|
|
|
llist_for_each_entry(tar, &osmo_log_target_list, entry) {
|
|
va_list bp;
|
|
|
|
if (!should_log_to_target(tar, subsys, level))
|
|
continue;
|
|
|
|
/* According to the manpage, vsnprintf leaves the value of ap
|
|
* in undefined state. Since _output uses vsnprintf and it may
|
|
* be called several times, we have to pass a copy of ap. */
|
|
va_copy(bp, ap);
|
|
if (tar->raw_output)
|
|
tar->raw_output(tar, subsys, level, file, line, cont, format, bp);
|
|
else
|
|
_output(tar, subsys, level, file, line, cont, format, bp);
|
|
va_end(bp);
|
|
}
|
|
}
|
|
|
|
/*! logging function used by DEBUGP() macro
|
|
* \param[in] subsys Logging sub-system
|
|
* \param[in] file name of source code file
|
|
* \param[in] cont continuation (1) or new line (0)
|
|
* \param[in] format format string
|
|
*/
|
|
void logp(int subsys, const char *file, int line, int cont,
|
|
const char *format, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, format);
|
|
osmo_vlogp(subsys, LOGL_DEBUG, file, line, cont, format, ap);
|
|
va_end(ap);
|
|
}
|
|
|
|
/*! logging function used by LOGP() macro
|
|
* \param[in] subsys Logging sub-system
|
|
* \param[in] level Log level
|
|
* \param[in] file name of source code file
|
|
* \param[in] cont continuation (1) or new line (0)
|
|
* \param[in] format format string
|
|
*/
|
|
void logp2(int subsys, unsigned int level, const char *file, int line, int cont, const char *format, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, format);
|
|
osmo_vlogp(subsys, level, file, line, cont, format, ap);
|
|
va_end(ap);
|
|
}
|
|
|
|
/*! Register a new log target with the logging core
|
|
* \param[in] target Log target to be registered
|
|
*/
|
|
void log_add_target(struct log_target *target)
|
|
{
|
|
llist_add_tail(&target->entry, &osmo_log_target_list);
|
|
}
|
|
|
|
/*! Unregister a log target from the logging core
|
|
* \param[in] target Log target to be unregistered
|
|
*/
|
|
void log_del_target(struct log_target *target)
|
|
{
|
|
llist_del(&target->entry);
|
|
}
|
|
|
|
/*! Reset (clear) the logging context */
|
|
void log_reset_context(void)
|
|
{
|
|
memset(&log_context, 0, sizeof(log_context));
|
|
}
|
|
|
|
/*! Set the logging context
|
|
* \param[in] ctx_nr logging context number
|
|
* \param[in] value value to which the context is to be set
|
|
* \returns 0 in case of success; negative otherwise
|
|
*
|
|
* A logging context is something like the subscriber identity to which
|
|
* the currently processed message relates, or the BTS through which it
|
|
* was received. As soon as this data is known, it can be set using
|
|
* this function. The main use of context information is for logging
|
|
* filters.
|
|
*/
|
|
int log_set_context(uint8_t ctx_nr, void *value)
|
|
{
|
|
if (ctx_nr > LOG_MAX_CTX)
|
|
return -EINVAL;
|
|
|
|
log_context.ctx[ctx_nr] = value;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*! Enable the \ref LOG_FLT_ALL log filter
|
|
* \param[in] target Log target to be affected
|
|
* \param[in] all enable (1) or disable (0) the ALL filter
|
|
*
|
|
* When the \ref LOG_FLT_ALL filter is enabled, all log messages will be
|
|
* printed. It acts as a wildcard. Setting it to \a 1 means there is no
|
|
* filtering.
|
|
*/
|
|
void log_set_all_filter(struct log_target *target, int all)
|
|
{
|
|
if (all)
|
|
target->filter_map |= (1 << LOG_FLT_ALL);
|
|
else
|
|
target->filter_map &= ~(1 << LOG_FLT_ALL);
|
|
}
|
|
|
|
/*! Enable or disable the use of colored output
|
|
* \param[in] target Log target to be affected
|
|
* \param[in] use_color Use color (1) or don't use color (0)
|
|
*/
|
|
void log_set_use_color(struct log_target *target, int use_color)
|
|
{
|
|
target->use_color = use_color;
|
|
}
|
|
|
|
/*! Enable or disable printing of timestamps while logging
|
|
* \param[in] target Log target to be affected
|
|
* \param[in] print_timestamp Enable (1) or disable (0) timestamps
|
|
*/
|
|
void log_set_print_timestamp(struct log_target *target, int print_timestamp)
|
|
{
|
|
target->print_timestamp = print_timestamp;
|
|
}
|
|
|
|
/*! Enable or disable printing of extended timestamps while logging
|
|
* \param[in] target Log target to be affected
|
|
* \param[in] print_timestamp Enable (1) or disable (0) timestamps
|
|
*
|
|
* When both timestamp and extended timestamp is enabled then only
|
|
* the extended timestamp will be used. The format of the timestamp
|
|
* is YYYYMMDDhhmmssnnn.
|
|
*/
|
|
void log_set_print_extended_timestamp(struct log_target *target, int print_timestamp)
|
|
{
|
|
target->print_ext_timestamp = print_timestamp;
|
|
}
|
|
|
|
/*! Use log_set_print_filename2() instead.
|
|
* Call log_set_print_filename2() with LOG_FILENAME_PATH or LOG_FILENAME_NONE, *as well as* call
|
|
* log_set_print_category_hex() with the argument passed to this function. This is to mirror legacy
|
|
* behavior, which combined the category in hex with the filename. For example, if the category-hex
|
|
* output were no longer affected by log_set_print_filename(), many unit tests (in libosmocore as well as
|
|
* dependent projects) would fail since they expect the category to disappear along with the filename.
|
|
* \param[in] target Log target to be affected
|
|
* \param[in] print_filename Enable (1) or disable (0) filenames
|
|
*/
|
|
void log_set_print_filename(struct log_target *target, int print_filename)
|
|
{
|
|
log_set_print_filename2(target, print_filename ? LOG_FILENAME_PATH : LOG_FILENAME_NONE);
|
|
log_set_print_category_hex(target, print_filename);
|
|
}
|
|
|
|
/*! Enable or disable printing of the filename while logging.
|
|
* \param[in] target Log target to be affected.
|
|
* \param[in] lft An LOG_FILENAME_* enum value.
|
|
* LOG_FILENAME_NONE omits the source file and line information from logs.
|
|
* LOG_FILENAME_PATH prints the entire source file path as passed to LOGP macros.
|
|
*/
|
|
void log_set_print_filename2(struct log_target *target, enum log_filename_type lft)
|
|
{
|
|
target->print_filename2 = lft;
|
|
}
|
|
|
|
/*! Set the position where on a log line the source file info should be logged.
|
|
* \param[in] target Log target to be affected.
|
|
* \param[in] pos A LOG_FILENAME_POS_* enum value.
|
|
* LOG_FILENAME_POS_DEFAULT logs just before the caller supplied log message.
|
|
* LOG_FILENAME_POS_LAST logs only at the end of a log line, where the caller issued an '\n' to end the
|
|
*/
|
|
void log_set_print_filename_pos(struct log_target *target, enum log_filename_pos pos)
|
|
{
|
|
target->print_filename_pos = pos;
|
|
}
|
|
|
|
/*! Enable or disable printing of the category name
|
|
* \param[in] target Log target to be affected
|
|
* \param[in] print_category Enable (1) or disable (0) filenames
|
|
*
|
|
* Print the category/subsys name in front of every log message.
|
|
*/
|
|
void log_set_print_category(struct log_target *target, int print_category)
|
|
{
|
|
target->print_category = print_category;
|
|
}
|
|
|
|
/*! Enable or disable printing of the category number in hex ('<000b>').
|
|
* \param[in] target Log target to be affected.
|
|
* \param[in] print_category_hex Enable (1) or disable (0) hex category.
|
|
*/
|
|
void log_set_print_category_hex(struct log_target *target, int print_category_hex)
|
|
{
|
|
target->print_category_hex = print_category_hex;
|
|
}
|
|
|
|
/*! Enable or disable printing of the log level name.
|
|
* \param[in] target Log target to be affected
|
|
* \param[in] print_level Enable (1) or disable (0) log level name
|
|
*
|
|
* Print the log level name in front of every log message.
|
|
*/
|
|
void log_set_print_level(struct log_target *target, int print_level)
|
|
{
|
|
target->print_level = (bool)print_level;
|
|
}
|
|
|
|
/*! Set the global log level for a given log target
|
|
* \param[in] target Log target to be affected
|
|
* \param[in] log_level New global log level
|
|
*/
|
|
void log_set_log_level(struct log_target *target, int log_level)
|
|
{
|
|
target->loglevel = log_level;
|
|
}
|
|
|
|
/*! Set a category filter on a given log target
|
|
* \param[in] target Log target to be affected
|
|
* \param[in] category Log category to be affected
|
|
* \param[in] enable whether to enable or disable the filter
|
|
* \param[in] level Log level of the filter
|
|
*/
|
|
void log_set_category_filter(struct log_target *target, int category,
|
|
int enable, int level)
|
|
{
|
|
if (!target)
|
|
return;
|
|
category = map_subsys(category);
|
|
target->categories[category].enabled = !!enable;
|
|
target->categories[category].loglevel = level;
|
|
}
|
|
|
|
#if (!EMBEDDED)
|
|
static void _file_output(struct log_target *target, unsigned int level,
|
|
const char *log)
|
|
{
|
|
fprintf(target->tgt_file.out, "%s", log);
|
|
fflush(target->tgt_file.out);
|
|
}
|
|
#endif
|
|
|
|
/*! Create a new log target skeleton
|
|
* \returns dynamically-allocated log target
|
|
* This funcition allocates a \ref log_target and initializes it
|
|
* with some default values. The newly created target is not
|
|
* registered yet.
|
|
*/
|
|
struct log_target *log_target_create(void)
|
|
{
|
|
struct log_target *target;
|
|
unsigned int i;
|
|
|
|
assert_loginfo(__func__);
|
|
|
|
target = talloc_zero(tall_log_ctx, struct log_target);
|
|
if (!target)
|
|
return NULL;
|
|
|
|
target->categories = talloc_zero_array(target,
|
|
struct log_category,
|
|
osmo_log_info->num_cat);
|
|
if (!target->categories) {
|
|
talloc_free(target);
|
|
return NULL;
|
|
}
|
|
|
|
INIT_LLIST_HEAD(&target->entry);
|
|
|
|
/* initialize the per-category enabled/loglevel from defaults */
|
|
for (i = 0; i < osmo_log_info->num_cat; i++) {
|
|
struct log_category *cat = &target->categories[i];
|
|
cat->enabled = osmo_log_info->cat[i].enabled;
|
|
cat->loglevel = osmo_log_info->cat[i].loglevel;
|
|
}
|
|
|
|
/* global settings */
|
|
target->use_color = 1;
|
|
target->print_timestamp = 0;
|
|
target->print_filename2 = LOG_FILENAME_PATH;
|
|
target->print_category_hex = true;
|
|
|
|
/* global log level */
|
|
target->loglevel = 0;
|
|
return target;
|
|
}
|
|
|
|
/*! Create the STDERR log target
|
|
* \returns dynamically-allocated \ref log_target for STDERR */
|
|
struct log_target *log_target_create_stderr(void)
|
|
{
|
|
/* since C89/C99 says stderr is a macro, we can safely do this! */
|
|
#if !EMBEDDED && defined(stderr)
|
|
struct log_target *target;
|
|
|
|
target = log_target_create();
|
|
if (!target)
|
|
return NULL;
|
|
|
|
target->type = LOG_TGT_TYPE_STDERR;
|
|
target->tgt_file.out = stderr;
|
|
target->output = _file_output;
|
|
return target;
|
|
#else
|
|
return NULL;
|
|
#endif /* stderr */
|
|
}
|
|
|
|
#if (!EMBEDDED)
|
|
/*! Create a new file-based log target
|
|
* \param[in] fname File name of the new log file
|
|
* \returns Log target in case of success, NULL otherwise
|
|
*/
|
|
struct log_target *log_target_create_file(const char *fname)
|
|
{
|
|
struct log_target *target;
|
|
|
|
target = log_target_create();
|
|
if (!target)
|
|
return NULL;
|
|
|
|
target->type = LOG_TGT_TYPE_FILE;
|
|
target->tgt_file.out = fopen(fname, "a");
|
|
if (!target->tgt_file.out)
|
|
return NULL;
|
|
|
|
target->output = _file_output;
|
|
|
|
target->tgt_file.fname = talloc_strdup(target, fname);
|
|
|
|
return target;
|
|
}
|
|
#endif
|
|
|
|
/*! Find a registered log target
|
|
* \param[in] type Log target type
|
|
* \param[in] fname File name
|
|
* \returns Log target (if found), NULL otherwise
|
|
*/
|
|
struct log_target *log_target_find(int type, const char *fname)
|
|
{
|
|
struct log_target *tgt;
|
|
|
|
llist_for_each_entry(tgt, &osmo_log_target_list, entry) {
|
|
if (tgt->type != type)
|
|
continue;
|
|
switch (tgt->type) {
|
|
case LOG_TGT_TYPE_FILE:
|
|
if (!strcmp(fname, tgt->tgt_file.fname))
|
|
return tgt;
|
|
break;
|
|
case LOG_TGT_TYPE_GSMTAP:
|
|
if (!strcmp(fname, tgt->tgt_gsmtap.hostname))
|
|
return tgt;
|
|
break;
|
|
default:
|
|
return tgt;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*! Unregister, close and delete a log target
|
|
* \param[in] target log target to unregister, close and delete */
|
|
void log_target_destroy(struct log_target *target)
|
|
{
|
|
|
|
/* just in case, to make sure we don't have any references */
|
|
log_del_target(target);
|
|
|
|
#if (!EMBEDDED)
|
|
if (target->output == &_file_output) {
|
|
/* since C89/C99 says stderr is a macro, we can safely do this! */
|
|
#ifdef stderr
|
|
/* don't close stderr */
|
|
if (target->tgt_file.out != stderr)
|
|
#endif
|
|
{
|
|
fclose(target->tgt_file.out);
|
|
target->tgt_file.out = NULL;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
talloc_free(target);
|
|
}
|
|
|
|
/*! close and re-open a log file (for log file rotation)
|
|
* \param[in] target log target to re-open
|
|
* \returns 0 in case of success; negative otherwise */
|
|
int log_target_file_reopen(struct log_target *target)
|
|
{
|
|
fclose(target->tgt_file.out);
|
|
|
|
target->tgt_file.out = fopen(target->tgt_file.fname, "a");
|
|
if (!target->tgt_file.out)
|
|
return -errno;
|
|
|
|
/* we assume target->output already to be set */
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*! close and re-open all log files (for log file rotation)
|
|
* \returns 0 in case of success; negative otherwise */
|
|
int log_targets_reopen(void)
|
|
{
|
|
struct log_target *tar;
|
|
int rc = 0;
|
|
|
|
llist_for_each_entry(tar, &osmo_log_target_list, entry) {
|
|
switch (tar->type) {
|
|
case LOG_TGT_TYPE_FILE:
|
|
if (log_target_file_reopen(tar) < 0)
|
|
rc = -1;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/*! Initialize the Osmocom logging core
|
|
* \param[in] inf Information regarding logging categories, could be NULL
|
|
* \param[in] ctx talloc context for logging allocations
|
|
* \returns 0 in case of success, negative in case of error
|
|
*
|
|
* If inf is NULL then only library-internal categories are initialized.
|
|
*/
|
|
int log_init(const struct log_info *inf, void *ctx)
|
|
{
|
|
int i;
|
|
|
|
tall_log_ctx = talloc_named_const(ctx, 1, "logging");
|
|
if (!tall_log_ctx)
|
|
return -ENOMEM;
|
|
|
|
osmo_log_info = talloc_zero(tall_log_ctx, struct log_info);
|
|
if (!osmo_log_info)
|
|
return -ENOMEM;
|
|
|
|
osmo_log_info->num_cat = ARRAY_SIZE(internal_cat);
|
|
|
|
if (inf) {
|
|
osmo_log_info->filter_fn = inf->filter_fn;
|
|
osmo_log_info->num_cat_user = inf->num_cat;
|
|
osmo_log_info->num_cat += inf->num_cat;
|
|
}
|
|
|
|
osmo_log_info->cat = talloc_zero_array(osmo_log_info,
|
|
struct log_info_cat,
|
|
osmo_log_info->num_cat);
|
|
if (!osmo_log_info->cat) {
|
|
talloc_free(osmo_log_info);
|
|
osmo_log_info = NULL;
|
|
return -ENOMEM;
|
|
}
|
|
|
|
if (inf) { /* copy over the user part */
|
|
for (i = 0; i < inf->num_cat; i++) {
|
|
memcpy((struct log_info_cat *) &osmo_log_info->cat[i],
|
|
&inf->cat[i], sizeof(struct log_info_cat));
|
|
}
|
|
}
|
|
|
|
/* copy over the library part */
|
|
for (i = 0; i < ARRAY_SIZE(internal_cat); i++) {
|
|
unsigned int cn = osmo_log_info->num_cat_user + i;
|
|
memcpy((struct log_info_cat *) &osmo_log_info->cat[cn],
|
|
&internal_cat[i], sizeof(struct log_info_cat));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* De-initialize the Osmocom logging core
|
|
* This function destroys all targets and releases associated memory */
|
|
void log_fini(void)
|
|
{
|
|
struct log_target *tar, *tar2;
|
|
|
|
llist_for_each_entry_safe(tar, tar2, &osmo_log_target_list, entry)
|
|
log_target_destroy(tar);
|
|
|
|
talloc_free(osmo_log_info);
|
|
osmo_log_info = NULL;
|
|
talloc_free(tall_log_ctx);
|
|
tall_log_ctx = NULL;
|
|
}
|
|
|
|
/*! Check whether a log entry will be generated.
|
|
* \returns != 0 if a log entry might get generated by at least one target */
|
|
int log_check_level(int subsys, unsigned int level)
|
|
{
|
|
struct log_target *tar;
|
|
|
|
assert_loginfo(__func__);
|
|
|
|
subsys = map_subsys(subsys);
|
|
|
|
/* TODO: The following could/should be cached (update on config) */
|
|
|
|
llist_for_each_entry(tar, &osmo_log_target_list, entry) {
|
|
if (!should_log_to_target(tar, subsys, level))
|
|
continue;
|
|
|
|
/* This might get logged (ignoring filters) */
|
|
return 1;
|
|
}
|
|
|
|
/* We are sure, that this will not be logged. */
|
|
return 0;
|
|
}
|
|
|
|
/*! @} */
|