src/basic/log.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 #pragma once
   3
   4 #include <stdarg.h>
   5 #include <stdbool.h>
   6 #include <stdlib.h>
   7 #include <string.h>
   8 #include <syslog.h>
   9
  10 #include "list.h"
  11 #include "macro.h"
  12 #include "ratelimit.h"
  13 #include "stdio-util.h"
  14
  15 /* Some structures we reference but don't want to pull in headers for */
  16 struct iovec;
  17 struct signalfd_siginfo;
  18
  19 typedef enum LogTarget{
  20         LOG_TARGET_CONSOLE,
  21         LOG_TARGET_KMSG,
  22         LOG_TARGET_JOURNAL,
  23         LOG_TARGET_SYSLOG,
  24         LOG_TARGET_CONSOLE_PREFIXED,
  25         LOG_TARGET_JOURNAL_OR_KMSG,
  26         LOG_TARGET_SYSLOG_OR_KMSG,
  27         LOG_TARGET_AUTO, /* console if stderr is not journal, JOURNAL_OR_KMSG otherwise */
  28         LOG_TARGET_NULL,
  29         _LOG_TARGET_SINGLE_MAX = LOG_TARGET_SYSLOG + 1,
  30         _LOG_TARGET_MAX = LOG_TARGET_NULL + 1,
  31         _LOG_TARGET_INVALID = -EINVAL,
  32 } LogTarget;
  33
  34 /* This log level disables logging completely. It can only be passed to log_set_max_level() and cannot be
  35  * used as a regular log level. */
  36 #define LOG_NULL (LOG_EMERG - 1)
  37
  38 /* Note to readers: << and >> have lower precedence (are evaluated earlier) than & and | */
  39 #define SYNTHETIC_ERRNO(num)                (1 << 30 | (num))
  40 #define IS_SYNTHETIC_ERRNO(val)             ((val) >> 30 & 1)
  41 #define ERRNO_VALUE(val)                    (abs(val) & ~(1 << 30))
  42
  43 /* The callback function to be invoked when syntax warnings are seen
  44  * in the unit files. */
  45 typedef void (*log_syntax_callback_t)(const char *unit, int level, void *userdata);
  46 void set_log_syntax_callback(log_syntax_callback_t cb, void *userdata);
  47
  48 static inline void clear_log_syntax_callback(dummy_t *dummy) {
  49           set_log_syntax_callback(/* cb= */ NULL, /* userdata= */ NULL);
  50 }
  51
  52 const char *log_target_to_string(LogTarget target) _const_;
  53 LogTarget log_target_from_string(const char *s) _pure_;
  54 void log_set_target(LogTarget target);
  55 void log_set_target_and_open(LogTarget target);
  56 int log_set_target_from_string(const char *e);
  57 LogTarget log_get_target(void) _pure_;
  58 void log_settle_target(void);
  59
  60 void log_set_max_level(int level);
  61 int log_set_max_level_from_string(const char *e);
  62 int log_get_max_level(void) _pure_;
  63 int log_max_levels_to_string(int level, char **ret);
  64
  65 void log_set_facility(int facility);
  66
  67 void log_show_color(bool b);
  68 bool log_get_show_color(void) _pure_;
  69 void log_show_location(bool b);
  70 bool log_get_show_location(void) _pure_;
  71 void log_show_time(bool b);
  72 bool log_get_show_time(void) _pure_;
  73 void log_show_tid(bool b);
  74 bool log_get_show_tid(void) _pure_;
  75
  76 int log_show_color_from_string(const char *e);
  77 int log_show_location_from_string(const char *e);
  78 int log_show_time_from_string(const char *e);
  79 int log_show_tid_from_string(const char *e);
  80
  81 /* Functions below that open and close logs or configure logging based on the
  82  * environment should not be called from library code — this is always a job
  83  * for the application itself. */
  84
  85 assert_cc(STRLEN(__FILE__) > STRLEN(RELATIVE_SOURCE_PATH) + 1);
  86 #define PROJECT_FILE (&__FILE__[STRLEN(RELATIVE_SOURCE_PATH) + 1])
  87
  88 bool stderr_is_journal(void);
  89 int log_open(void);
  90 void log_close(void);
  91 void log_forget_fds(void);
  92
  93 void log_parse_environment_variables(void);
  94 void log_parse_environment(void);
  95
  96 int log_dispatch_internal(
  97                 int level,
  98                 int error,
  99                 const char *file,
 100                 int line,
 101                 const char *func,
 102                 const char *object_field,
 103                 const char *object,
 104                 const char *extra,
 105                 const char *extra_field,
 106                 char *buffer);
 107
 108 int log_internal(
 109                 int level,
 110                 int error,
 111                 const char *file,
 112                 int line,
 113                 const char *func,
 114                 const char *format, ...) _printf_(6,7);
 115
 116 int log_internalv(
 117                 int level,
 118                 int error,
 119                 const char *file,
 120                 int line,
 121                 const char *func,
 122                 const char *format,
 123                 va_list ap) _printf_(6,0);
 124
 125 int log_object_internalv(
 126                 int level,
 127                 int error,
 128                 const char *file,
 129                 int line,
 130                 const char *func,
 131                 const char *object_field,
 132                 const char *object,
 133                 const char *extra_field,
 134                 const char *extra,
 135                 const char *format,
 136                 va_list ap) _printf_(10,0);
 137
 138 int log_object_internal(
 139                 int level,
 140                 int error,
 141                 const char *file,
 142                 int line,
 143                 const char *func,
 144                 const char *object_field,
 145                 const char *object,
 146                 const char *extra_field,
 147                 const char *extra,
 148                 const char *format, ...) _printf_(10,11);
 149
 150 int log_struct_internal(
 151                 int level,
 152                 int error,
 153                 const char *file,
 154                 int line,
 155                 const char *func,
 156                 const char *format, ...) _printf_(6,0) _sentinel_;
 157
 158 int log_oom_internal(
 159                 int level,
 160                 const char *file,
 161                 int line,
 162                 const char *func);
 163
 164 int log_format_iovec(
 165                 struct iovec *iovec,
 166                 size_t iovec_len,
 167                 size_t *n,
 168                 bool newline_separator,
 169                 int error,
 170                 const char *format,
 171                 va_list ap) _printf_(6, 0);
 172
 173 int log_struct_iovec_internal(
 174                 int level,
 175                 int error,
 176                 const char *file,
 177                 int line,
 178                 const char *func,
 179                 const struct iovec *input_iovec,
 180                 size_t n_input_iovec);
 181
 182 /* This modifies the buffer passed! */
 183 int log_dump_internal(
 184                 int level,
 185                 int error,
 186                 const char *file,
 187                 int line,
 188                 const char *func,
 189                 char *buffer);
 190
 191 /* Logging for various assertions */
 192 _noreturn_ void log_assert_failed(
 193                 const char *text,
 194                 const char *file,
 195                 int line,
 196                 const char *func);
 197
 198 _noreturn_ void log_assert_failed_unreachable(
 199                 const char *file,
 200                 int line,
 201                 const char *func);
 202
 203 void log_assert_failed_return(
 204                 const char *text,
 205                 const char *file,
 206                 int line,
 207                 const char *func);
 208
 209 #define log_dispatch(level, error, buffer)                              \
 210         log_dispatch_internal(level, error, PROJECT_FILE, __LINE__, __func__, NULL, NULL, NULL, NULL, buffer)
 211
 212 /* Logging with level */
 213 #define log_full_errno_zerook(level, error, ...)                        \
 214         ({                                                              \
 215                 int _level = (level), _e = (error);                     \
 216                 _e = (log_get_max_level() >= LOG_PRI(_level))           \
 217                         ? log_internal(_level, _e, PROJECT_FILE, __LINE__, __func__, __VA_ARGS__) \
 218                         : -ERRNO_VALUE(_e);                             \
 219                 _e < 0 ? _e : -ESTRPIPE;                                \
 220         })
 221
 222 #if BUILD_MODE_DEVELOPER && !defined(TEST_CODE)
 223 #  define ASSERT_NON_ZERO(x) assert((x) != 0)
 224 #else
 225 #  define ASSERT_NON_ZERO(x)
 226 #endif
 227
 228 #define log_full_errno(level, error, ...)                               \
 229         ({                                                              \
 230                 int _error = (error);                                   \
 231                 ASSERT_NON_ZERO(_error);                                \
 232                 log_full_errno_zerook(level, _error, __VA_ARGS__);      \
 233         })
 234
 235 #define log_full(level, fmt, ...)                                      \
 236         ({                                                             \
 237                 if (BUILD_MODE_DEVELOPER)                              \
 238                         assert(!strstr(fmt, "%m"));                    \
 239                 (void) log_full_errno_zerook(level, 0, fmt, ##__VA_ARGS__); \
 240         })
 241
 242 int log_emergency_level(void);
 243
 244 /* Normal logging */
 245 #define log_debug(...)     log_full(LOG_DEBUG,   __VA_ARGS__)
 246 #define log_info(...)      log_full(LOG_INFO,    __VA_ARGS__)
 247 #define log_notice(...)    log_full(LOG_NOTICE,  __VA_ARGS__)
 248 #define log_warning(...)   log_full(LOG_WARNING, __VA_ARGS__)
 249 #define log_error(...)     log_full(LOG_ERR,     __VA_ARGS__)
 250 #define log_emergency(...) log_full(log_emergency_level(), __VA_ARGS__)
 251
 252 /* Logging triggered by an errno-like error */
 253 #define log_debug_errno(error, ...)     log_full_errno(LOG_DEBUG,   error, __VA_ARGS__)
 254 #define log_info_errno(error, ...)      log_full_errno(LOG_INFO,    error, __VA_ARGS__)
 255 #define log_notice_errno(error, ...)    log_full_errno(LOG_NOTICE,  error, __VA_ARGS__)
 256 #define log_warning_errno(error, ...)   log_full_errno(LOG_WARNING, error, __VA_ARGS__)
 257 #define log_error_errno(error, ...)     log_full_errno(LOG_ERR,     error, __VA_ARGS__)
 258 #define log_emergency_errno(error, ...) log_full_errno(log_emergency_level(), error, __VA_ARGS__)
 259
 260 /* This logs at the specified level the first time it is called, and then
 261  * logs at debug. If the specified level is debug, this logs only the first
 262  * time it is called. */
 263 #define log_once(level, ...)                                             \
 264         ({                                                               \
 265                 if (ONCE)                                                \
 266                         log_full(level, __VA_ARGS__);                    \
 267                 else if (LOG_PRI(level) != LOG_DEBUG)                    \
 268                         log_debug(__VA_ARGS__);                          \
 269         })
 270
 271 #define log_once_errno(level, error, ...)                                \
 272         ({                                                               \
 273                 int _err = (error);                                      \
 274                 if (ONCE)                                                \
 275                         _err = log_full_errno(level, _err, __VA_ARGS__); \
 276                 else if (LOG_PRI(level) != LOG_DEBUG)                    \
 277                         _err = log_debug_errno(_err, __VA_ARGS__);       \
 278                 else                                                     \
 279                         _err = -ERRNO_VALUE(_err);                       \
 280                 _err;                                                    \
 281         })
 282
 283 #if LOG_TRACE
 284 #  define log_trace(...)          log_debug(__VA_ARGS__)
 285 #  define log_trace_errno(...)    log_debug_errno(__VA_ARGS__)
 286 #else
 287 #  define log_trace(...)          do {} while (0)
 288 #  define log_trace_errno(e, ...) (-ERRNO_VALUE(e))
 289 #endif
 290
 291 /* Structured logging */
 292 #define log_struct_errno(level, error, ...)                             \
 293         log_struct_internal(level, error, PROJECT_FILE, __LINE__, __func__, __VA_ARGS__, NULL)
 294 #define log_struct(level, ...) log_struct_errno(level, 0, __VA_ARGS__)
 295
 296 #define log_struct_iovec_errno(level, error, iovec, n_iovec)            \
 297         log_struct_iovec_internal(level, error, PROJECT_FILE, __LINE__, __func__, iovec, n_iovec)
 298 #define log_struct_iovec(level, iovec, n_iovec) log_struct_iovec_errno(level, 0, iovec, n_iovec)
 299
 300 /* This modifies the buffer passed! */
 301 #define log_dump(level, buffer)                                         \
 302         log_dump_internal(level, 0, PROJECT_FILE, __LINE__, __func__, buffer)
 303
 304 #define log_oom() log_oom_internal(LOG_ERR, PROJECT_FILE, __LINE__, __func__)
 305 #define log_oom_debug() log_oom_internal(LOG_DEBUG, PROJECT_FILE, __LINE__, __func__)
 306 #define log_oom_warning() log_oom_internal(LOG_WARNING, PROJECT_FILE, __LINE__, __func__)
 307
 308 bool log_on_console(void) _pure_;
 309
 310 /* Helper to wrap the main message in structured logging. The macro doesn't do much,
 311  * except to provide visual grouping of the format string and its arguments. */
 312 #if LOG_MESSAGE_VERIFICATION || defined(__COVERITY__)
 313 /* Do a fake formatting of the message string to let the scanner verify the arguments against the format
 314  * message. The variable will never be set to true, but we don't tell the compiler that :) */
 315 extern bool _log_message_dummy;
 316 #  define LOG_MESSAGE(fmt, ...) "MESSAGE=%.0d" fmt, (_log_message_dummy && printf(fmt, ##__VA_ARGS__)), ##__VA_ARGS__
 317 #else
 318 #  define LOG_MESSAGE(fmt, ...) "MESSAGE=" fmt, ##__VA_ARGS__
 319 #endif
 320
 321 void log_received_signal(int level, const struct signalfd_siginfo *si);
 322
 323 /* If turned on, any requests for a log target involving "syslog" will be implicitly upgraded to the equivalent journal target */
 324 void log_set_upgrade_syslog_to_journal(bool b);
 325
 326 /* If turned on, and log_open() is called, we'll not use STDERR_FILENO for logging ever, but rather open /dev/console */
 327 void log_set_always_reopen_console(bool b);
 328
 329 /* If turned on, we'll open the log stream implicitly if needed on each individual log call. This is normally not
 330  * desired as we want to reuse our logging streams. It is useful however  */
 331 void log_set_open_when_needed(bool b);
 332
 333 /* If turned on, then we'll never use IPC-based logging, i.e. never log to syslog or the journal. We'll only log to
 334  * stderr, the console or kmsg */
 335 void log_set_prohibit_ipc(bool b);
 336
 337 void log_set_assert_return_is_critical(bool b);
 338 bool log_get_assert_return_is_critical(void) _pure_;
 339
 340 int log_dup_console(void);
 341
 342 int log_syntax_internal(
 343                 const char *unit,
 344                 int level,
 345                 const char *config_file,
 346                 unsigned config_line,
 347                 int error,
 348                 const char *file,
 349                 int line,
 350                 const char *func,
 351                 const char *format, ...) _printf_(9, 10);
 352
 353 int log_syntax_invalid_utf8_internal(
 354                 const char *unit,
 355                 int level,
 356                 const char *config_file,
 357                 unsigned config_line,
 358                 const char *file,
 359                 int line,
 360                 const char *func,
 361                 const char *rvalue);
 362
 363 #define log_syntax(unit, level, config_file, config_line, error, ...)   \
 364         ({                                                              \
 365                 int _level = (level), _e = (error);                     \
 366                 (log_get_max_level() >= LOG_PRI(_level))                \
 367                         ? log_syntax_internal(unit, _level, config_file, config_line, _e, PROJECT_FILE, __LINE__, __func__, __VA_ARGS__) \
 368                         : -ERRNO_VALUE(_e);                             \
 369         })
 370
 371 #define log_syntax_invalid_utf8(unit, level, config_file, config_line, rvalue) \
 372         ({                                                              \
 373                 int _level = (level);                                   \
 374                 (log_get_max_level() >= LOG_PRI(_level))                \
 375                         ? log_syntax_invalid_utf8_internal(unit, _level, config_file, config_line, PROJECT_FILE, __LINE__, __func__, rvalue) \
 376                         : -EINVAL;                                      \
 377         })
 378
 379 #define DEBUG_LOGGING _unlikely_(log_get_max_level() >= LOG_DEBUG)
 380
 381 void log_setup(void);
 382
 383 typedef struct LogRateLimit {
 384         int error;
 385         int level;
 386         RateLimit ratelimit;
 387 } LogRateLimit;
 388
 389 #define log_ratelimit_internal(_level, _error, _ratelimit, _file, _line, _func, _format, ...)        \
 390 ({                                                                              \
 391         int _log_ratelimit_error = (_error);                                    \
 392         int _log_ratelimit_level = (_level);                                    \
 393         static LogRateLimit _log_ratelimit = {                                  \
 394                 .ratelimit = (_ratelimit),                                      \
 395         };                                                                      \
 396         unsigned _num_dropped_errors = ratelimit_num_dropped(&_log_ratelimit.ratelimit); \
 397         if (_log_ratelimit_error != _log_ratelimit.error || _log_ratelimit_level != _log_ratelimit.level) { \
 398                 ratelimit_reset(&_log_ratelimit.ratelimit);                     \
 399                 _log_ratelimit.error = _log_ratelimit_error;                    \
 400                 _log_ratelimit.level = _log_ratelimit_level;                    \
 401         }                                                                       \
 402         if (log_get_max_level() == LOG_DEBUG || ratelimit_below(&_log_ratelimit.ratelimit)) \
 403                 _log_ratelimit_error = _num_dropped_errors > 0                  \
 404                 ? log_internal(_log_ratelimit_level, _log_ratelimit_error, _file, _line, _func, _format " (Dropped %u similar message(s))", ##__VA_ARGS__, _num_dropped_errors) \
 405                 : log_internal(_log_ratelimit_level, _log_ratelimit_error, _file, _line, _func, _format, ##__VA_ARGS__); \
 406         _log_ratelimit_error;                                                   \
 407 })
 408
 409 #define log_ratelimit_full_errno(level, error, _ratelimit, format, ...)             \
 410         ({                                                              \
 411                 int _level = (level), _e = (error);                     \
 412                 _e = (log_get_max_level() >= LOG_PRI(_level))           \
 413                         ? log_ratelimit_internal(_level, _e, _ratelimit, PROJECT_FILE, __LINE__, __func__, format, ##__VA_ARGS__) \
 414                         : -ERRNO_VALUE(_e);                             \
 415                 _e < 0 ? _e : -ESTRPIPE;                                \
 416         })
 417
 418 #define log_ratelimit_full(level, _ratelimit, format, ...)                          \
 419         log_ratelimit_full_errno(level, 0, _ratelimit, format, ##__VA_ARGS__)
 420
 421 /* Normal logging */
 422 #define log_ratelimit_info(...)      log_ratelimit_full(LOG_INFO,    __VA_ARGS__)
 423 #define log_ratelimit_notice(...)    log_ratelimit_full(LOG_NOTICE,  __VA_ARGS__)
 424 #define log_ratelimit_warning(...)   log_ratelimit_full(LOG_WARNING, __VA_ARGS__)
 425 #define log_ratelimit_error(...)     log_ratelimit_full(LOG_ERR,     __VA_ARGS__)
 426 #define log_ratelimit_emergency(...) log_ratelimit_full(log_emergency_level(), __VA_ARGS__)
 427
 428 /* Logging triggered by an errno-like error */
 429 #define log_ratelimit_info_errno(error, ...)      log_ratelimit_full_errno(LOG_INFO,    error, __VA_ARGS__)
 430 #define log_ratelimit_notice_errno(error, ...)    log_ratelimit_full_errno(LOG_NOTICE,  error, __VA_ARGS__)
 431 #define log_ratelimit_warning_errno(error, ...)   log_ratelimit_full_errno(LOG_WARNING, error, __VA_ARGS__)
 432 #define log_ratelimit_error_errno(error, ...)     log_ratelimit_full_errno(LOG_ERR,     error, __VA_ARGS__)
 433 #define log_ratelimit_emergency_errno(error, ...) log_ratelimit_full_errno(log_emergency_level(), error, __VA_ARGS__)
 434
 435 const char *_log_set_prefix(const char *prefix, bool force);
 436 static inline const char *_log_unset_prefixp(const char **p) {
 437         assert(p);
 438         _log_set_prefix(*p, true);
 439         return NULL;
 440 }
 441
 442 #define LOG_SET_PREFIX(prefix) \
 443         _cleanup_(_log_unset_prefixp) _unused_ const char *CONCATENATE(_cleanup_log_unset_prefix_, UNIQ) = _log_set_prefix(prefix, false);
 444
 445 /*
 446  * The log context allows attaching extra metadata to log messages written to the journal via log.h. We keep
 447  * track of a thread local log context onto which we can push extra metadata fields that should be logged.
 448  *
 449  * LOG_CONTEXT_PUSH() will add the provided field to the log context and will remove it again when the
 450  * current block ends. LOG_CONTEXT_PUSH_STRV() will do the same but for all fields in the given strv.
 451  * LOG_CONTEXT_PUSHF() is like LOG_CONTEXT_PUSH() but takes a format string and arguments.
 452  *
 453  * Using the macros is as simple as putting them anywhere inside a block to add a field to all following log
 454  * messages logged from inside that block.
 455  *
 456  * void myfunction(...) {
 457  *         ...
 458  *
 459  *         LOG_CONTEXT_PUSHF("MYMETADATA=%s", "abc");
 460  *
 461  *         // Every journal message logged will now have the MYMETADATA=abc
 462  *         // field included.
 463  * }
 464  *
 465  * One special case to note is async code, where we use callbacks that are invoked to continue processing
 466  * when some event occurs. For async code, there's usually an associated "userdata" struct containing all the
 467  * information associated with the async operation. In this "userdata" struct, we can store a log context
 468  * allocated with log_context_new() and freed with log_context_free(). We can then add and remove fields to
 469  * the `fields` member of the log context object and all those fields will be logged along with each log
 470  * message.
 471  */
 472
 473 typedef struct LogContext LogContext;
 474
 475 bool log_context_enabled(void);
 476
 477 LogContext* log_context_new(const char *key, const char *value);
 478 LogContext* log_context_new_strv(char **fields, bool owned);
 479 LogContext* log_context_new_iov(struct iovec *input_iovec, size_t n_input_iovec, bool owned);
 480
 481 /* Same as log_context_new(), but frees the given fields strv/iovec on failure. */
 482 LogContext* log_context_new_strv_consume(char **fields);
 483 LogContext* log_context_new_iov_consume(struct iovec *input_iovec, size_t n_input_iovec);
 484
 485 LogContext *log_context_ref(LogContext *c);
 486 LogContext *log_context_unref(LogContext *c);
 487
 488 DEFINE_TRIVIAL_CLEANUP_FUNC(LogContext*, log_context_unref);
 489
 490 /* Returns the number of attached log context objects. */
 491 size_t log_context_num_contexts(void);
 492 /* Returns the number of fields in all attached log contexts. */
 493 size_t log_context_num_fields(void);
 494
 495 #define LOG_CONTEXT_PUSH(...) \
 496         LOG_CONTEXT_PUSH_STRV(STRV_MAKE(__VA_ARGS__))
 497
 498 #define LOG_CONTEXT_PUSHF(...) \
 499         LOG_CONTEXT_PUSH(snprintf_ok((char[LINE_MAX]) {}, LINE_MAX, __VA_ARGS__))
 500
 501 #define _LOG_CONTEXT_PUSH_KEY_VALUE(key, value, c) \
 502         _unused_ _cleanup_(log_context_unrefp) LogContext *c = log_context_new(key, value);
 503
 504 #define LOG_CONTEXT_PUSH_KEY_VALUE(key, value) \
 505         _LOG_CONTEXT_PUSH_KEY_VALUE(key, value, UNIQ_T(c, UNIQ))
 506
 507 #define _LOG_CONTEXT_PUSH_STRV(strv, c) \
 508         _unused_ _cleanup_(log_context_unrefp) LogContext *c = log_context_new_strv(strv, /*owned=*/ false);
 509
 510 #define LOG_CONTEXT_PUSH_STRV(strv) \
 511         _LOG_CONTEXT_PUSH_STRV(strv, UNIQ_T(c, UNIQ))
 512
 513 #define _LOG_CONTEXT_PUSH_IOV(input_iovec, n_input_iovec, c) \
 514         _unused_ _cleanup_(log_context_unrefp) LogContext *c = log_context_new_iov(input_iovec, n_input_iovec, /*owned=*/ false);
 515
 516 #define LOG_CONTEXT_PUSH_IOV(input_iovec, n_input_iovec) \
 517         _LOG_CONTEXT_PUSH_IOV(input_iovec, n_input_iovec, UNIQ_T(c, UNIQ))
 518
 519 /* LOG_CONTEXT_CONSUME_STR()/LOG_CONTEXT_CONSUME_STRV()/LOG_CONTEXT_CONSUME_IOV() are identical to
 520  * LOG_CONTEXT_PUSH_STR()/LOG_CONTEXT_PUSH_STRV()/LOG_CONTEXT_PUSH_IOV() except they take ownership of the
 521  * given str/strv argument.
 522  */
 523
 524 #define _LOG_CONTEXT_CONSUME_STR(s, c, strv) \
 525         _unused_ _cleanup_strv_free_ strv = strv_new(s);                                                \
 526         if (!strv)                                                                                      \
 527                 free(s);                                                                                \
 528         _unused_ _cleanup_(log_context_unrefp) LogContext *c = log_context_new_strv_consume(TAKE_PTR(strv))
 529
 530 #define LOG_CONTEXT_CONSUME_STR(s) \
 531         _LOG_CONTEXT_CONSUME_STR(s, UNIQ_T(c, UNIQ), UNIQ_T(sv, UNIQ))
 532
 533 #define _LOG_CONTEXT_CONSUME_STRV(strv, c) \
 534         _unused_ _cleanup_(log_context_unrefp) LogContext *c = log_context_new_strv_consume(strv);
 535
 536 #define LOG_CONTEXT_CONSUME_STRV(strv) \
 537         _LOG_CONTEXT_CONSUME_STRV(strv, UNIQ_T(c, UNIQ))
 538
 539 #define _LOG_CONTEXT_CONSUME_IOV(input_iovec, n_input_iovec, c) \
 540         _unused_ _cleanup_(log_context_unrefp) LogContext *c = log_context_new_iov_consume(input_iovec, n_input_iovec);
 541
 542 #define LOG_CONTEXT_CONSUME_IOV(input_iovec, n_input_iovec) \
 543         _LOG_CONTEXT_CONSUME_IOV(input_iovec, n_input_iovec, UNIQ_T(c, UNIQ))