4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
26 #include <sys/signalfd.h>
27 #include <sys/socket.h>
34 typedef enum LogRealm {
41 # define LOG_REALM LOG_REALM_SYSTEMD
44 typedef enum LogTarget{
46 LOG_TARGET_CONSOLE_PREFIXED,
49 LOG_TARGET_JOURNAL_OR_KMSG,
51 LOG_TARGET_SYSLOG_OR_KMSG,
52 LOG_TARGET_AUTO, /* console if stderr is tty, JOURNAL_OR_KMSG otherwise */
53 LOG_TARGET_SAFE, /* console if stderr is tty, KMSG otherwise */
56 _LOG_TARGET_INVALID = -1
59 #define LOG_REALM_PLUS_LEVEL(realm, level) \
60 ((realm) << 10 | (level))
61 #define LOG_REALM_REMOVE_LEVEL(realm_level) \
64 void log_set_target(LogTarget target);
65 void log_set_max_level_realm(LogRealm realm, int level);
66 #define log_set_max_level(level) \
67 log_set_max_level_realm(LOG_REALM, (level))
69 void log_set_facility(int facility);
71 int log_set_target_from_string(const char *e);
72 int log_set_max_level_from_string_realm(LogRealm realm, const char *e);
73 #define log_set_max_level_from_string(e) \
74 log_set_max_level_from_string_realm(LOG_REALM, (e))
76 void log_show_color(bool b);
77 bool log_get_show_color(void) _pure_;
78 void log_show_location(bool b);
79 bool log_get_show_location(void) _pure_;
81 int log_show_color_from_string(const char *e);
82 int log_show_location_from_string(const char *e);
84 LogTarget log_get_target(void) _pure_;
85 int log_get_max_level_realm(LogRealm realm) _pure_;
86 #define log_get_max_level() \
87 log_get_max_level_realm(LOG_REALM)
91 #if 0 /// UNNEEDED by elogind
92 void log_forget_fds(void);
95 void log_close_syslog(void);
96 void log_close_journal(void);
97 void log_close_kmsg(void);
98 void log_close_console(void);
100 void log_parse_environment_realm(LogRealm realm);
101 #define log_parse_environment() \
102 log_parse_environment_realm(LOG_REALM)
104 int log_dispatch_internal(
110 const char *object_field,
113 const char *extra_field,
116 int log_internal_realm(
122 const char *format, ...) _printf_(6,7);
123 #define log_internal(level, ...) \
124 log_internal_realm(LOG_REALM_PLUS_LEVEL(LOG_REALM, (level)), __VA_ARGS__)
126 int log_internalv_realm(
133 va_list ap) _printf_(6,0);
134 #define log_internalv(level, ...) \
135 log_internalv_realm(LOG_REALM_PLUS_LEVEL(LOG_REALM, (level)), __VA_ARGS__)
137 /* Realm is fixed to LOG_REALM_SYSTEMD for those */
138 int log_object_internal(
144 const char *object_field,
146 const char *extra_field,
148 const char *format, ...) _printf_(10,11);
150 int log_object_internalv(
156 const char *object_field,
158 const char *extra_field,
161 va_list ap) _printf_(10,0);
163 int log_struct_internal(
169 const char *format, ...) _printf_(6,0) _sentinel_;
171 int log_oom_internal(
177 int log_format_iovec(
181 bool newline_separator,
184 va_list ap) _printf_(6, 0);
186 /* This modifies the buffer passed! */
187 int log_dump_internal(
195 /* Logging for various assertions */
196 noreturn void log_assert_failed_realm(
202 #define log_assert_failed(text, ...) \
203 log_assert_failed_realm(LOG_REALM, (text), __VA_ARGS__)
205 noreturn void log_assert_failed_unreachable_realm(
211 #define log_assert_failed_unreachable(text, ...) \
212 log_assert_failed_unreachable_realm(LOG_REALM, (text), __VA_ARGS__)
214 void log_assert_failed_return_realm(
220 #define log_assert_failed_return(text, ...) \
221 log_assert_failed_return_realm(LOG_REALM, (text), __VA_ARGS__)
223 #define log_dispatch(level, error, buffer) \
224 log_dispatch_internal(level, error, __FILE__, __LINE__, __func__, NULL, NULL, NULL, NULL, buffer)
226 /* Logging with level */
227 #define log_full_errno_realm(realm, level, error, ...) \
229 int _level = (level), _e = (error); \
230 (log_get_max_level_realm((realm)) >= LOG_PRI(_level)) \
231 ? log_internal_realm(LOG_REALM_PLUS_LEVEL((realm), _level), _e, \
232 __FILE__, __LINE__, __func__, __VA_ARGS__) \
236 #define log_full_errno(level, error, ...) \
237 log_full_errno_realm(LOG_REALM, (level), (error), __VA_ARGS__)
239 #define log_full(level, ...) log_full_errno((level), 0, __VA_ARGS__)
242 #define log_debug(...) log_full(LOG_DEBUG, __VA_ARGS__)
243 #define log_info(...) log_full(LOG_INFO, __VA_ARGS__)
244 #define log_notice(...) log_full(LOG_NOTICE, __VA_ARGS__)
245 #define log_warning(...) log_full(LOG_WARNING, __VA_ARGS__)
246 #define log_error(...) log_full(LOG_ERR, __VA_ARGS__)
247 #define log_emergency(...) log_full(getpid() == 1 ? LOG_EMERG : LOG_ERR, __VA_ARGS__)
249 /* Logging triggered by an errno-like error */
250 #define log_debug_errno(error, ...) log_full_errno(LOG_DEBUG, error, __VA_ARGS__)
251 #define log_info_errno(error, ...) log_full_errno(LOG_INFO, error, __VA_ARGS__)
252 #define log_notice_errno(error, ...) log_full_errno(LOG_NOTICE, error, __VA_ARGS__)
253 #define log_warning_errno(error, ...) log_full_errno(LOG_WARNING, error, __VA_ARGS__)
254 #define log_error_errno(error, ...) log_full_errno(LOG_ERR, error, __VA_ARGS__)
255 #define log_emergency_errno(error, ...) log_full_errno(getpid() == 1 ? LOG_EMERG : LOG_ERR, error, __VA_ARGS__)
258 # define log_trace(...) log_debug(__VA_ARGS__)
260 # define log_trace(...) do {} while (0)
263 #ifdef ENABLE_DEBUG_ELOGIND
264 # define log_debug_elogind(...) log_debug(__VA_ARGS__);usleep(25*USEC_PER_MSEC)
266 # define log_debug_elogind(...) do {} while (0)
267 #endif // ENABLE_DEBUG_ELOGIND
268 /* Structured logging */
269 #define log_struct_errno(level, error, ...) \
270 log_struct_internal(LOG_REALM_PLUS_LEVEL(LOG_REALM, level), \
271 error, __FILE__, __LINE__, __func__, __VA_ARGS__)
272 #define log_struct(level, ...) log_struct_errno(level, 0, __VA_ARGS__)
274 /* This modifies the buffer passed! */
275 #define log_dump(level, buffer) \
276 log_dump_internal(LOG_REALM_PLUS_LEVEL(LOG_REALM, level), \
277 0, __FILE__, __LINE__, __func__, buffer)
279 #define log_oom() log_oom_internal(LOG_REALM, __FILE__, __LINE__, __func__)
281 bool log_on_console(void) _pure_;
283 const char *log_target_to_string(LogTarget target) _const_;
284 LogTarget log_target_from_string(const char *s) _pure_;
286 /* Helper to prepare various field for structured logging */
287 #define LOG_MESSAGE(fmt, ...) "MESSAGE=" fmt, ##__VA_ARGS__
289 #if 0 /// UNNEEDED by elogind
290 void log_received_signal(int level, const struct signalfd_siginfo *si);
292 void log_set_upgrade_syslog_to_journal(bool b);
293 void log_set_always_reopen_console(bool b);
296 int log_syntax_internal(
299 const char *config_file,
300 unsigned config_line,
305 const char *format, ...) _printf_(9, 10);
307 #define log_syntax(unit, level, config_file, config_line, error, ...) \
309 int _level = (level), _e = (error); \
310 (log_get_max_level() >= LOG_PRI(_level)) \
311 ? log_syntax_internal(unit, _level, config_file, config_line, _e, __FILE__, __LINE__, __func__, __VA_ARGS__) \
315 #define log_syntax_invalid_utf8(unit, level, config_file, config_line, rvalue) \
317 int _level = (level); \
318 if (log_get_max_level() >= LOG_PRI(_level)) { \
319 _cleanup_free_ char *_p = NULL; \
320 _p = utf8_escape_invalid(rvalue); \
321 log_syntax_internal(unit, _level, config_file, config_line, 0, __FILE__, __LINE__, __func__, \
322 "String is not UTF-8 clean, ignoring assignment: %s", strna(_p)); \