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The journal is a component of systemd, that captures Syslog messages, Kernel log messages, initial RAM disk and early boot messages as well as messages written to STDOUT/STDERR of all services, indexes them and makes this available to the user. It can be used in parallel, or in place of a traditional syslog daemon, such as rsyslog or syslog-ng. The journal offers a couple of improvements over traditional logging facilities (e.g. advanced filtering capabilities). This patch adds support for logging directly to the journal using its native API.
157 lines
4.6 KiB
C
157 lines
4.6 KiB
C
#ifndef foologhfoo
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#define foologhfoo
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/***
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This file is part of PulseAudio.
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Copyright 2004-2006 Lennart Poettering
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Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2.1 of the License,
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or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PulseAudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#include <stdarg.h>
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#include <stdlib.h>
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#include <pulsecore/macro.h>
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#include <pulse/gccmacro.h>
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/* A simple logging subsystem */
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/* Where to log to */
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typedef enum pa_log_target_type {
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PA_LOG_STDERR, /* default */
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PA_LOG_SYSLOG,
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#ifdef HAVE_JOURNAL
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PA_LOG_JOURNAL, /* systemd journal */
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#endif
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PA_LOG_NULL, /* to /dev/null */
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PA_LOG_FILE, /* to a user specified file */
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PA_LOG_NEWFILE, /* with an automatic suffix to avoid overwriting anything */
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} pa_log_target_type_t;
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typedef enum pa_log_level {
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PA_LOG_ERROR = 0, /* Error messages */
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PA_LOG_WARN = 1, /* Warning messages */
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PA_LOG_NOTICE = 2, /* Notice messages */
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PA_LOG_INFO = 3, /* Info messages */
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PA_LOG_DEBUG = 4, /* debug message */
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PA_LOG_LEVEL_MAX
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} pa_log_level_t;
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typedef enum pa_log_flags {
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PA_LOG_COLORS = 0x01, /* Show colorful output */
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PA_LOG_PRINT_TIME = 0x02, /* Show time */
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PA_LOG_PRINT_FILE = 0x04, /* Show source file */
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PA_LOG_PRINT_META = 0x08, /* Show extended location information */
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PA_LOG_PRINT_LEVEL = 0x10, /* Show log level prefix */
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} pa_log_flags_t;
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typedef enum pa_log_merge {
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PA_LOG_SET,
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PA_LOG_UNSET,
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PA_LOG_RESET
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} pa_log_merge_t;
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typedef struct {
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pa_log_target_type_t type;
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char *file;
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} pa_log_target;
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/* Set an identification for the current daemon. Used when logging to syslog. */
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void pa_log_set_ident(const char *p);
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/* Set a log target. */
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int pa_log_set_target(pa_log_target *t);
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/* Maximal log level */
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void pa_log_set_level(pa_log_level_t l);
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/* Set flags */
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void pa_log_set_flags(pa_log_flags_t flags, pa_log_merge_t merge);
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/* Enable backtrace */
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void pa_log_set_show_backtrace(unsigned nlevels);
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/* Skip the first backtrace frames */
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void pa_log_set_skip_backtrace(unsigned nlevels);
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void pa_log_level_meta(
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pa_log_level_t level,
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const char*file,
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int line,
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const char *func,
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const char *format, ...) PA_GCC_PRINTF_ATTR(5,6);
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void pa_log_levelv_meta(
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pa_log_level_t level,
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const char*file,
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int line,
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const char *func,
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const char *format,
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va_list ap);
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void pa_log_level(
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pa_log_level_t level,
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const char *format, ...) PA_GCC_PRINTF_ATTR(2,3);
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void pa_log_levelv(
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pa_log_level_t level,
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const char *format,
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va_list ap);
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pa_log_target *pa_log_target_new(pa_log_target_type_t type, const char *file);
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void pa_log_target_free(pa_log_target *t);
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pa_log_target *pa_log_parse_target(const char *string);
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char *pa_log_target_to_string(const pa_log_target *t);
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#if __STDC_VERSION__ >= 199901L
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/* ISO varargs available */
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#define pa_log_debug(...) pa_log_level_meta(PA_LOG_DEBUG, __FILE__, __LINE__, __func__, __VA_ARGS__)
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#define pa_log_info(...) pa_log_level_meta(PA_LOG_INFO, __FILE__, __LINE__, __func__, __VA_ARGS__)
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#define pa_log_notice(...) pa_log_level_meta(PA_LOG_NOTICE, __FILE__, __LINE__, __func__, __VA_ARGS__)
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#define pa_log_warn(...) pa_log_level_meta(PA_LOG_WARN, __FILE__, __LINE__, __func__, __VA_ARGS__)
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#define pa_log_error(...) pa_log_level_meta(PA_LOG_ERROR, __FILE__, __LINE__, __func__, __VA_ARGS__)
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#define pa_logl(level, ...) pa_log_level_meta(level, __FILE__, __LINE__, __func__, __VA_ARGS__)
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#else
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#define LOG_FUNC(suffix, level) \
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PA_GCC_UNUSED static void pa_log_##suffix(const char *format, ...) { \
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va_list ap; \
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va_start(ap, format); \
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pa_log_levelv_meta(level, NULL, 0, NULL, format, ap); \
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va_end(ap); \
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}
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LOG_FUNC(debug, PA_LOG_DEBUG)
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LOG_FUNC(info, PA_LOG_INFO)
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LOG_FUNC(notice, PA_LOG_NOTICE)
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LOG_FUNC(warn, PA_LOG_WARN)
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LOG_FUNC(error, PA_LOG_ERROR)
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#endif
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#define pa_log pa_log_error
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bool pa_log_ratelimit(pa_log_level_t level);
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#endif
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