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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
a7334b09 | 2 | |
c9b97d2a | 3 | #include <errno.h> |
16801e90 | 4 | #include <fcntl.h> |
11c3a366 TA |
5 | #include <inttypes.h> |
6 | #include <limits.h> | |
07630cea LP |
7 | #include <stdarg.h> |
8 | #include <stddef.h> | |
9 | #include <stdio.h> | |
11c3a366 | 10 | #include <sys/signalfd.h> |
16801e90 | 11 | #include <sys/socket.h> |
11c3a366 TA |
12 | #include <sys/time.h> |
13 | #include <sys/uio.h> | |
16801e90 | 14 | #include <sys/un.h> |
07630cea | 15 | #include <unistd.h> |
5899f3b7 | 16 | |
158350e8 | 17 | #include "sd-messages.h" |
07630cea | 18 | |
b5efdb8a | 19 | #include "alloc-util.h" |
2b2fec7d | 20 | #include "errno-util.h" |
3ffd4af2 | 21 | #include "fd-util.h" |
f97b34a6 | 22 | #include "format-util.h" |
afc5dbf3 | 23 | #include "io-util.h" |
3ffd4af2 | 24 | #include "log.h" |
07630cea | 25 | #include "macro.h" |
4e731273 LP |
26 | #include "parse-util.h" |
27 | #include "proc-cmdline.h" | |
0b452006 | 28 | #include "process-util.h" |
78158d13 | 29 | #include "ratelimit.h" |
24882e06 | 30 | #include "signal-util.h" |
07630cea | 31 | #include "socket-util.h" |
15a5e950 | 32 | #include "stdio-util.h" |
8b43440b | 33 | #include "string-table.h" |
07630cea | 34 | #include "string-util.h" |
7ccbd1ae | 35 | #include "syslog-util.h" |
07630cea | 36 | #include "terminal-util.h" |
93cc7779 | 37 | #include "time-util.h" |
d04ce5a9 | 38 | #include "utf8.h" |
5899f3b7 | 39 | |
bb99a35a LP |
40 | #define SNDBUF_SIZE (8*1024*1024) |
41 | ||
16801e90 | 42 | static LogTarget log_target = LOG_TARGET_CONSOLE; |
ff524019 ZJS |
43 | static int log_max_level[] = {LOG_INFO, LOG_INFO}; |
44 | assert_cc(ELEMENTSOF(log_max_level) == _LOG_REALM_MAX); | |
3eff4208 | 45 | static int log_facility = LOG_DAEMON; |
16801e90 | 46 | |
843d2643 | 47 | static int console_fd = STDERR_FILENO; |
16801e90 LP |
48 | static int syslog_fd = -1; |
49 | static int kmsg_fd = -1; | |
5ba081b0 | 50 | static int journal_fd = -1; |
16801e90 | 51 | |
c31e1495 LP |
52 | static bool syslog_is_stream = false; |
53 | ||
bbe63281 LP |
54 | static bool show_color = false; |
55 | static bool show_location = false; | |
56 | ||
c1dc6153 | 57 | static bool upgrade_syslog_to_journal = false; |
48a601fe | 58 | static bool always_reopen_console = false; |
16e4fd87 | 59 | static bool open_when_needed = false; |
adf47c91 | 60 | static bool prohibit_ipc = false; |
c1dc6153 | 61 | |
35b8ca3a | 62 | /* Akin to glibc's __abort_msg; which is private and we hence cannot |
185986c6 LP |
63 | * use here. */ |
64 | static char *log_abort_msg = NULL; | |
65 | ||
780747da ZJS |
66 | /* An assert to use in logging functions that does not call recursively |
67 | * into our logging functions (since that might lead to a loop). */ | |
68 | #define assert_raw(expr) \ | |
69 | do { \ | |
70 | if (_unlikely_(!(expr))) { \ | |
71 | fputs(#expr "\n", stderr); \ | |
72 | abort(); \ | |
73 | } \ | |
74 | } while (false) | |
75 | ||
cc2b9e6b | 76 | static void log_close_console(void) { |
e7685a77 | 77 | console_fd = safe_close_above_stdio(console_fd); |
16801e90 LP |
78 | } |
79 | ||
843d2643 | 80 | static int log_open_console(void) { |
16801e90 | 81 | |
cc2b9e6b AJ |
82 | if (!always_reopen_console) { |
83 | console_fd = STDERR_FILENO; | |
16801e90 | 84 | return 0; |
cc2b9e6b | 85 | } |
843d2643 | 86 | |
cc2b9e6b | 87 | if (console_fd < 3) { |
d5a1c99b | 88 | int fd; |
7fe2903c | 89 | |
d5a1c99b LP |
90 | fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC); |
91 | if (fd < 0) | |
92 | return fd; | |
93 | ||
94 | console_fd = fd_move_above_stdio(fd); | |
cc2b9e6b | 95 | } |
843d2643 LP |
96 | |
97 | return 0; | |
98 | } | |
99 | ||
cc2b9e6b | 100 | static void log_close_kmsg(void) { |
03e334a1 | 101 | kmsg_fd = safe_close(kmsg_fd); |
843d2643 LP |
102 | } |
103 | ||
104 | static int log_open_kmsg(void) { | |
16801e90 LP |
105 | |
106 | if (kmsg_fd >= 0) | |
107 | return 0; | |
108 | ||
674f8283 | 109 | kmsg_fd = open("/dev/kmsg", O_WRONLY|O_NOCTTY|O_CLOEXEC); |
cd15c418 | 110 | if (kmsg_fd < 0) |
16801e90 | 111 | return -errno; |
0dae83f9 | 112 | |
7fe2903c | 113 | kmsg_fd = fd_move_above_stdio(kmsg_fd); |
16801e90 LP |
114 | return 0; |
115 | } | |
116 | ||
cc2b9e6b | 117 | static void log_close_syslog(void) { |
03e334a1 | 118 | syslog_fd = safe_close(syslog_fd); |
16801e90 LP |
119 | } |
120 | ||
c31e1495 | 121 | static int create_log_socket(int type) { |
8b18fdc1 | 122 | struct timeval tv; |
95066a90 | 123 | int fd; |
c31e1495 | 124 | |
8b18fdc1 | 125 | fd = socket(AF_UNIX, type|SOCK_CLOEXEC, 0); |
5ba081b0 | 126 | if (fd < 0) |
c31e1495 LP |
127 | return -errno; |
128 | ||
7fe2903c | 129 | fd = fd_move_above_stdio(fd); |
0474ef7b | 130 | (void) fd_inc_sndbuf(fd, SNDBUF_SIZE); |
bb99a35a | 131 | |
7fe2903c LP |
132 | /* We need a blocking fd here since we'd otherwise lose messages way too early. However, let's not hang forever |
133 | * in the unlikely case of a deadlock. */ | |
df0ff127 | 134 | if (getpid_cached() == 1) |
4d89874a ZJS |
135 | timeval_store(&tv, 10 * USEC_PER_MSEC); |
136 | else | |
137 | timeval_store(&tv, 10 * USEC_PER_SEC); | |
086891e5 | 138 | (void) setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)); |
8b18fdc1 | 139 | |
c31e1495 LP |
140 | return fd; |
141 | } | |
142 | ||
843d2643 | 143 | static int log_open_syslog(void) { |
95066a90 LP |
144 | |
145 | static const union sockaddr_union sa = { | |
b92bea5d ZJS |
146 | .un.sun_family = AF_UNIX, |
147 | .un.sun_path = "/dev/log", | |
148 | }; | |
16801e90 | 149 | |
95066a90 LP |
150 | int r; |
151 | ||
16801e90 LP |
152 | if (syslog_fd >= 0) |
153 | return 0; | |
154 | ||
5ba081b0 LP |
155 | syslog_fd = create_log_socket(SOCK_DGRAM); |
156 | if (syslog_fd < 0) { | |
157 | r = syslog_fd; | |
843d2643 | 158 | goto fail; |
16801e90 LP |
159 | } |
160 | ||
fc2fffe7 | 161 | if (connect(syslog_fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
03e334a1 | 162 | safe_close(syslog_fd); |
c31e1495 LP |
163 | |
164 | /* Some legacy syslog systems still use stream | |
165 | * sockets. They really shouldn't. But what can we | |
166 | * do... */ | |
5ba081b0 LP |
167 | syslog_fd = create_log_socket(SOCK_STREAM); |
168 | if (syslog_fd < 0) { | |
169 | r = syslog_fd; | |
c31e1495 LP |
170 | goto fail; |
171 | } | |
172 | ||
fc2fffe7 | 173 | if (connect(syslog_fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
c31e1495 LP |
174 | r = -errno; |
175 | goto fail; | |
176 | } | |
177 | ||
178 | syslog_is_stream = true; | |
179 | } else | |
180 | syslog_is_stream = false; | |
181 | ||
16801e90 | 182 | return 0; |
843d2643 LP |
183 | |
184 | fail: | |
185 | log_close_syslog(); | |
843d2643 LP |
186 | return r; |
187 | } | |
188 | ||
cc2b9e6b | 189 | static void log_close_journal(void) { |
03e334a1 | 190 | journal_fd = safe_close(journal_fd); |
5ba081b0 LP |
191 | } |
192 | ||
193 | static int log_open_journal(void) { | |
95066a90 LP |
194 | |
195 | static const union sockaddr_union sa = { | |
b92bea5d ZJS |
196 | .un.sun_family = AF_UNIX, |
197 | .un.sun_path = "/run/systemd/journal/socket", | |
198 | }; | |
95066a90 | 199 | |
5ba081b0 LP |
200 | int r; |
201 | ||
202 | if (journal_fd >= 0) | |
203 | return 0; | |
204 | ||
205 | journal_fd = create_log_socket(SOCK_DGRAM); | |
206 | if (journal_fd < 0) { | |
207 | r = journal_fd; | |
208 | goto fail; | |
209 | } | |
210 | ||
fc2fffe7 | 211 | if (connect(journal_fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
5ba081b0 LP |
212 | r = -errno; |
213 | goto fail; | |
214 | } | |
215 | ||
5ba081b0 LP |
216 | return 0; |
217 | ||
218 | fail: | |
219 | log_close_journal(); | |
5ba081b0 LP |
220 | return r; |
221 | } | |
222 | ||
843d2643 LP |
223 | int log_open(void) { |
224 | int r; | |
225 | ||
e3e42fc2 ZJS |
226 | /* Do not call from library code. */ |
227 | ||
843d2643 LP |
228 | /* If we don't use the console we close it here, to not get |
229 | * killed by SAK. If we don't use syslog we close it here so | |
230 | * that we are not confused by somebody deleting the socket in | |
cc2b9e6b AJ |
231 | * the fs, and to make sure we don't use it if prohibit_ipc is |
232 | * set. If we don't use /dev/kmsg we still keep it open, | |
843d2643 LP |
233 | * because there is no reason to close it. */ |
234 | ||
9fae33d2 | 235 | if (log_target == LOG_TARGET_NULL) { |
5ba081b0 | 236 | log_close_journal(); |
9fae33d2 LP |
237 | log_close_syslog(); |
238 | log_close_console(); | |
239 | return 0; | |
240 | } | |
241 | ||
6c347d50 | 242 | if (log_target != LOG_TARGET_AUTO || |
df0ff127 | 243 | getpid_cached() == 1 || |
f41c094c | 244 | isatty(STDERR_FILENO) <= 0) { |
bb7df0da | 245 | |
adf47c91 LP |
246 | if (!prohibit_ipc && |
247 | IN_SET(log_target, LOG_TARGET_AUTO, | |
5b5688af ZJS |
248 | LOG_TARGET_JOURNAL_OR_KMSG, |
249 | LOG_TARGET_JOURNAL)) { | |
5ba081b0 LP |
250 | r = log_open_journal(); |
251 | if (r >= 0) { | |
252 | log_close_syslog(); | |
bb7df0da LP |
253 | log_close_console(); |
254 | return r; | |
255 | } | |
5ba081b0 LP |
256 | } |
257 | ||
adf47c91 LP |
258 | if (!prohibit_ipc && |
259 | IN_SET(log_target, LOG_TARGET_SYSLOG_OR_KMSG, | |
5b5688af | 260 | LOG_TARGET_SYSLOG)) { |
5ba081b0 LP |
261 | r = log_open_syslog(); |
262 | if (r >= 0) { | |
263 | log_close_journal(); | |
264 | log_close_console(); | |
265 | return r; | |
266 | } | |
267 | } | |
268 | ||
5b5688af | 269 | if (IN_SET(log_target, LOG_TARGET_AUTO, |
5b5688af ZJS |
270 | LOG_TARGET_JOURNAL_OR_KMSG, |
271 | LOG_TARGET_SYSLOG_OR_KMSG, | |
272 | LOG_TARGET_KMSG)) { | |
5ba081b0 LP |
273 | r = log_open_kmsg(); |
274 | if (r >= 0) { | |
275 | log_close_journal(); | |
bb7df0da LP |
276 | log_close_syslog(); |
277 | log_close_console(); | |
278 | return r; | |
279 | } | |
5ba081b0 | 280 | } |
bb7df0da | 281 | } |
843d2643 | 282 | |
5ba081b0 | 283 | log_close_journal(); |
843d2643 | 284 | log_close_syslog(); |
dcdf86bb | 285 | |
843d2643 | 286 | return log_open_console(); |
16801e90 LP |
287 | } |
288 | ||
289 | void log_set_target(LogTarget target) { | |
290 | assert(target >= 0); | |
291 | assert(target < _LOG_TARGET_MAX); | |
292 | ||
c1dc6153 LP |
293 | if (upgrade_syslog_to_journal) { |
294 | if (target == LOG_TARGET_SYSLOG) | |
295 | target = LOG_TARGET_JOURNAL; | |
296 | else if (target == LOG_TARGET_SYSLOG_OR_KMSG) | |
297 | target = LOG_TARGET_JOURNAL_OR_KMSG; | |
298 | } | |
299 | ||
16801e90 LP |
300 | log_target = target; |
301 | } | |
302 | ||
871e5809 | 303 | void log_close(void) { |
e3e42fc2 ZJS |
304 | /* Do not call from library code. */ |
305 | ||
5ba081b0 | 306 | log_close_journal(); |
871e5809 | 307 | log_close_syslog(); |
5ba081b0 LP |
308 | log_close_kmsg(); |
309 | log_close_console(); | |
871e5809 LP |
310 | } |
311 | ||
4d8a7798 | 312 | void log_forget_fds(void) { |
e3e42fc2 ZJS |
313 | /* Do not call from library code. */ |
314 | ||
5ba081b0 | 315 | console_fd = kmsg_fd = syslog_fd = journal_fd = -1; |
4d8a7798 MS |
316 | } |
317 | ||
ff524019 | 318 | void log_set_max_level_realm(LogRealm realm, int level) { |
16801e90 | 319 | assert((level & LOG_PRIMASK) == level); |
ff524019 | 320 | assert(realm < ELEMENTSOF(log_max_level)); |
16801e90 | 321 | |
ff524019 | 322 | log_max_level[realm] = level; |
16801e90 LP |
323 | } |
324 | ||
3eff4208 LP |
325 | void log_set_facility(int facility) { |
326 | log_facility = facility; | |
327 | } | |
328 | ||
843d2643 | 329 | static int write_to_console( |
20c03b7b | 330 | int level, |
086891e5 | 331 | int error, |
95066a90 | 332 | const char *file, |
20c03b7b LP |
333 | int line, |
334 | const char *func, | |
335 | const char *buffer) { | |
5899f3b7 | 336 | |
79c95440 | 337 | char location[256], prefix[1 + DECIMAL_STR_MAX(int) + 2]; |
aca83a53 | 338 | struct iovec iovec[6] = {}; |
37b8d2f6 | 339 | const char *on = NULL, *off = NULL; |
da6053d0 | 340 | size_t n = 0; |
5899f3b7 | 341 | |
843d2643 LP |
342 | if (console_fd < 0) |
343 | return 0; | |
344 | ||
aca83a53 | 345 | if (log_target == LOG_TARGET_CONSOLE_PREFIXED) { |
0474ef7b | 346 | xsprintf(prefix, "<%i>", level); |
e6a7ec4b | 347 | iovec[n++] = IOVEC_MAKE_STRING(prefix); |
aca83a53 LP |
348 | } |
349 | ||
37b8d2f6 ZJS |
350 | if (show_color) |
351 | get_log_colors(LOG_PRI(level), &on, &off, NULL); | |
843d2643 | 352 | |
674f8283 | 353 | if (show_location) { |
d35305fe ZJS |
354 | const char *lon = "", *loff = ""; |
355 | if (show_color) { | |
356 | lon = ANSI_HIGHLIGHT_YELLOW4; | |
357 | loff = ANSI_NORMAL; | |
358 | } | |
359 | ||
360 | (void) snprintf(location, sizeof location, "%s%s:%i%s: ", lon, file, line, loff); | |
e6a7ec4b | 361 | iovec[n++] = IOVEC_MAKE_STRING(location); |
674f8283 LP |
362 | } |
363 | ||
37b8d2f6 ZJS |
364 | if (on) |
365 | iovec[n++] = IOVEC_MAKE_STRING(on); | |
e6a7ec4b | 366 | iovec[n++] = IOVEC_MAKE_STRING(buffer); |
37b8d2f6 ZJS |
367 | if (off) |
368 | iovec[n++] = IOVEC_MAKE_STRING(off); | |
e6a7ec4b | 369 | iovec[n++] = IOVEC_MAKE_STRING("\n"); |
843d2643 | 370 | |
0e6eaa2d LP |
371 | if (writev(console_fd, iovec, n) < 0) { |
372 | ||
df0ff127 | 373 | if (errno == EIO && getpid_cached() == 1) { |
0e6eaa2d | 374 | |
e11a5c72 LP |
375 | /* If somebody tried to kick us from our console tty (via vhangup() or suchlike), try |
376 | * to reconnect. */ | |
0e6eaa2d LP |
377 | |
378 | log_close_console(); | |
e11a5c72 | 379 | (void) log_open_console(); |
0e6eaa2d LP |
380 | if (console_fd < 0) |
381 | return 0; | |
382 | ||
383 | if (writev(console_fd, iovec, n) < 0) | |
384 | return -errno; | |
385 | } else | |
386 | return -errno; | |
387 | } | |
5899f3b7 | 388 | |
843d2643 | 389 | return 1; |
16801e90 | 390 | } |
5899f3b7 | 391 | |
16801e90 | 392 | static int write_to_syslog( |
086891e5 LP |
393 | int level, |
394 | int error, | |
95066a90 | 395 | const char *file, |
086891e5 LP |
396 | int line, |
397 | const char *func, | |
086891e5 | 398 | const char *buffer) { |
16801e90 | 399 | |
5ffa8c81 ZJS |
400 | char header_priority[2 + DECIMAL_STR_MAX(int) + 1], |
401 | header_time[64], | |
402 | header_pid[4 + DECIMAL_STR_MAX(pid_t) + 1]; | |
b92bea5d ZJS |
403 | struct iovec iovec[5] = {}; |
404 | struct msghdr msghdr = { | |
405 | .msg_iov = iovec, | |
406 | .msg_iovlen = ELEMENTSOF(iovec), | |
407 | }; | |
16801e90 | 408 | time_t t; |
e0f691e1 | 409 | struct tm tm; |
16801e90 LP |
410 | |
411 | if (syslog_fd < 0) | |
843d2643 | 412 | return 0; |
16801e90 | 413 | |
5ffa8c81 | 414 | xsprintf(header_priority, "<%i>", level); |
16801e90 LP |
415 | |
416 | t = (time_t) (now(CLOCK_REALTIME) / USEC_PER_SEC); | |
e0f691e1 | 417 | if (!localtime_r(&t, &tm)) |
16801e90 LP |
418 | return -EINVAL; |
419 | ||
e0f691e1 | 420 | if (strftime(header_time, sizeof(header_time), "%h %e %T ", &tm) <= 0) |
16801e90 LP |
421 | return -EINVAL; |
422 | ||
df0ff127 | 423 | xsprintf(header_pid, "["PID_FMT"]: ", getpid_cached()); |
16801e90 | 424 | |
e6a7ec4b LP |
425 | iovec[0] = IOVEC_MAKE_STRING(header_priority); |
426 | iovec[1] = IOVEC_MAKE_STRING(header_time); | |
427 | iovec[2] = IOVEC_MAKE_STRING(program_invocation_short_name); | |
428 | iovec[3] = IOVEC_MAKE_STRING(header_pid); | |
429 | iovec[4] = IOVEC_MAKE_STRING(buffer); | |
16801e90 | 430 | |
c899f8c6 | 431 | /* When using syslog via SOCK_STREAM separate the messages by NUL chars */ |
c31e1495 LP |
432 | if (syslog_is_stream) |
433 | iovec[4].iov_len++; | |
434 | ||
c31e1495 LP |
435 | for (;;) { |
436 | ssize_t n; | |
437 | ||
8f7f7a1b MS |
438 | n = sendmsg(syslog_fd, &msghdr, MSG_NOSIGNAL); |
439 | if (n < 0) | |
c31e1495 LP |
440 | return -errno; |
441 | ||
442 | if (!syslog_is_stream || | |
443 | (size_t) n >= IOVEC_TOTAL_SIZE(iovec, ELEMENTSOF(iovec))) | |
444 | break; | |
445 | ||
446 | IOVEC_INCREMENT(iovec, ELEMENTSOF(iovec), n); | |
447 | } | |
16801e90 | 448 | |
843d2643 | 449 | return 1; |
16801e90 LP |
450 | } |
451 | ||
452 | static int write_to_kmsg( | |
086891e5 LP |
453 | int level, |
454 | int error, | |
bcf5c276 | 455 | const char *file, |
086891e5 LP |
456 | int line, |
457 | const char *func, | |
086891e5 | 458 | const char *buffer) { |
16801e90 | 459 | |
78158d13 ZJS |
460 | /* Set a ratelimit on the amount of messages logged to /dev/kmsg. This is mostly supposed to be a |
461 | * safety catch for the case where start indiscriminately logging in a loop. It will not catch cases | |
462 | * where we log excessively, but not in a tight loop. | |
463 | * | |
464 | * Note that this ratelimit is per-emitter, so we might still overwhelm /dev/kmsg with multiple | |
465 | * loggers. | |
466 | */ | |
467 | static thread_local RateLimit ratelimit = { 5 * USEC_PER_SEC, 200 }; | |
468 | ||
5ffa8c81 ZJS |
469 | char header_priority[2 + DECIMAL_STR_MAX(int) + 1], |
470 | header_pid[4 + DECIMAL_STR_MAX(pid_t) + 1]; | |
b92bea5d | 471 | struct iovec iovec[5] = {}; |
16801e90 LP |
472 | |
473 | if (kmsg_fd < 0) | |
843d2643 | 474 | return 0; |
16801e90 | 475 | |
78158d13 ZJS |
476 | if (!ratelimit_below(&ratelimit)) |
477 | return 0; | |
478 | ||
5ffa8c81 | 479 | xsprintf(header_priority, "<%i>", level); |
df0ff127 | 480 | xsprintf(header_pid, "["PID_FMT"]: ", getpid_cached()); |
16801e90 | 481 | |
e6a7ec4b LP |
482 | iovec[0] = IOVEC_MAKE_STRING(header_priority); |
483 | iovec[1] = IOVEC_MAKE_STRING(program_invocation_short_name); | |
484 | iovec[2] = IOVEC_MAKE_STRING(header_pid); | |
485 | iovec[3] = IOVEC_MAKE_STRING(buffer); | |
486 | iovec[4] = IOVEC_MAKE_STRING("\n"); | |
16801e90 LP |
487 | |
488 | if (writev(kmsg_fd, iovec, ELEMENTSOF(iovec)) < 0) | |
489 | return -errno; | |
490 | ||
843d2643 | 491 | return 1; |
16801e90 LP |
492 | } |
493 | ||
086891e5 LP |
494 | static int log_do_header( |
495 | char *header, | |
496 | size_t size, | |
497 | int level, | |
498 | int error, | |
499 | const char *file, int line, const char *func, | |
4b58153d LP |
500 | const char *object_field, const char *object, |
501 | const char *extra_field, const char *extra) { | |
f8e6f4aa | 502 | int r; |
086891e5 | 503 | |
52d86690 ZJS |
504 | error = IS_SYNTHETIC_ERRNO(error) ? 0 : ERRNO_VALUE(error); |
505 | ||
f8e6f4aa ZJS |
506 | r = snprintf(header, size, |
507 | "PRIORITY=%i\n" | |
508 | "SYSLOG_FACILITY=%i\n" | |
509 | "%s%.256s%s" /* CODE_FILE */ | |
510 | "%s%.*i%s" /* CODE_LINE */ | |
511 | "%s%.256s%s" /* CODE_FUNC */ | |
512 | "%s%.*i%s" /* ERRNO */ | |
513 | "%s%.256s%s" /* object */ | |
514 | "%s%.256s%s" /* extra */ | |
515 | "SYSLOG_IDENTIFIER=%.256s\n", | |
516 | LOG_PRI(level), | |
517 | LOG_FAC(level), | |
518 | isempty(file) ? "" : "CODE_FILE=", | |
519 | isempty(file) ? "" : file, | |
520 | isempty(file) ? "" : "\n", | |
521 | line ? "CODE_LINE=" : "", | |
522 | line ? 1 : 0, line, /* %.0d means no output too, special case for 0 */ | |
523 | line ? "\n" : "", | |
524 | isempty(func) ? "" : "CODE_FUNC=", | |
525 | isempty(func) ? "" : func, | |
526 | isempty(func) ? "" : "\n", | |
527 | error ? "ERRNO=" : "", | |
528 | error ? 1 : 0, error, | |
529 | error ? "\n" : "", | |
530 | isempty(object) ? "" : object_field, | |
531 | isempty(object) ? "" : object, | |
532 | isempty(object) ? "" : "\n", | |
533 | isempty(extra) ? "" : extra_field, | |
534 | isempty(extra) ? "" : extra, | |
535 | isempty(extra) ? "" : "\n", | |
536 | program_invocation_short_name); | |
780747da | 537 | assert_raw((size_t) r < size); |
086891e5 | 538 | |
41a79f10 ZJS |
539 | return 0; |
540 | } | |
5ba081b0 | 541 | |
41a79f10 | 542 | static int write_to_journal( |
086891e5 LP |
543 | int level, |
544 | int error, | |
bcf5c276 | 545 | const char *file, |
086891e5 LP |
546 | int line, |
547 | const char *func, | |
548 | const char *object_field, | |
549 | const char *object, | |
4b58153d LP |
550 | const char *extra_field, |
551 | const char *extra, | |
086891e5 | 552 | const char *buffer) { |
41a79f10 ZJS |
553 | |
554 | char header[LINE_MAX]; | |
b92bea5d ZJS |
555 | struct iovec iovec[4] = {}; |
556 | struct msghdr mh = {}; | |
41a79f10 ZJS |
557 | |
558 | if (journal_fd < 0) | |
559 | return 0; | |
560 | ||
4b58153d | 561 | log_do_header(header, sizeof(header), level, error, file, line, func, object_field, object, extra_field, extra); |
5ba081b0 | 562 | |
e6a7ec4b LP |
563 | iovec[0] = IOVEC_MAKE_STRING(header); |
564 | iovec[1] = IOVEC_MAKE_STRING("MESSAGE="); | |
565 | iovec[2] = IOVEC_MAKE_STRING(buffer); | |
566 | iovec[3] = IOVEC_MAKE_STRING("\n"); | |
5ba081b0 | 567 | |
5ba081b0 LP |
568 | mh.msg_iov = iovec; |
569 | mh.msg_iovlen = ELEMENTSOF(iovec); | |
570 | ||
571 | if (sendmsg(journal_fd, &mh, MSG_NOSIGNAL) < 0) | |
572 | return -errno; | |
573 | ||
574 | return 1; | |
575 | } | |
576 | ||
93484b47 | 577 | int log_dispatch_internal( |
086891e5 LP |
578 | int level, |
579 | int error, | |
95066a90 | 580 | const char *file, |
086891e5 LP |
581 | int line, |
582 | const char *func, | |
583 | const char *object_field, | |
584 | const char *object, | |
4b58153d | 585 | const char *extra_field, |
4dd09c6a | 586 | const char *extra, |
086891e5 | 587 | char *buffer) { |
843d2643 | 588 | |
780747da | 589 | assert_raw(buffer); |
843d2643 | 590 | |
9fae33d2 | 591 | if (log_target == LOG_TARGET_NULL) |
52d86690 | 592 | return -ERRNO_VALUE(error); |
9fae33d2 | 593 | |
29db5834 | 594 | /* Patch in LOG_DAEMON facility if necessary */ |
7d76f312 | 595 | if ((level & LOG_FACMASK) == 0) |
52d86690 | 596 | level |= log_facility; |
29db5834 | 597 | |
16e4fd87 | 598 | if (open_when_needed) |
e11a5c72 | 599 | (void) log_open(); |
16e4fd87 | 600 | |
9726b29e LP |
601 | do { |
602 | char *e; | |
9499b235 | 603 | int k = 0; |
843d2643 | 604 | |
9726b29e | 605 | buffer += strspn(buffer, NEWLINE); |
843d2643 | 606 | |
9726b29e LP |
607 | if (buffer[0] == 0) |
608 | break; | |
843d2643 | 609 | |
9726b29e LP |
610 | if ((e = strpbrk(buffer, NEWLINE))) |
611 | *(e++) = 0; | |
843d2643 | 612 | |
5b5688af ZJS |
613 | if (IN_SET(log_target, LOG_TARGET_AUTO, |
614 | LOG_TARGET_JOURNAL_OR_KMSG, | |
615 | LOG_TARGET_JOURNAL)) { | |
5ba081b0 | 616 | |
4b58153d | 617 | k = write_to_journal(level, error, file, line, func, object_field, object, extra_field, extra, buffer); |
e38b8a40 LP |
618 | if (k < 0 && k != -EAGAIN) |
619 | log_close_journal(); | |
5ba081b0 LP |
620 | } |
621 | ||
5b5688af ZJS |
622 | if (IN_SET(log_target, LOG_TARGET_SYSLOG_OR_KMSG, |
623 | LOG_TARGET_SYSLOG)) { | |
9726b29e | 624 | |
4b58153d | 625 | k = write_to_syslog(level, error, file, line, func, buffer); |
e38b8a40 LP |
626 | if (k < 0 && k != -EAGAIN) |
627 | log_close_syslog(); | |
9726b29e LP |
628 | } |
629 | ||
9499b235 | 630 | if (k <= 0 && |
5b5688af | 631 | IN_SET(log_target, LOG_TARGET_AUTO, |
5b5688af ZJS |
632 | LOG_TARGET_SYSLOG_OR_KMSG, |
633 | LOG_TARGET_JOURNAL_OR_KMSG, | |
634 | LOG_TARGET_KMSG)) { | |
9726b29e | 635 | |
e38b8a40 LP |
636 | if (k < 0) |
637 | log_open_kmsg(); | |
638 | ||
4b58153d | 639 | k = write_to_kmsg(level, error, file, line, func, buffer); |
4e7bc3f3 LP |
640 | if (k < 0) { |
641 | log_close_kmsg(); | |
e11a5c72 | 642 | (void) log_open_console(); |
bf371116 | 643 | } |
9726b29e LP |
644 | } |
645 | ||
bf371116 | 646 | if (k <= 0) |
4b58153d | 647 | (void) write_to_console(level, error, file, line, func, buffer); |
9726b29e LP |
648 | |
649 | buffer = e; | |
650 | } while (buffer); | |
651 | ||
16e4fd87 LP |
652 | if (open_when_needed) |
653 | log_close(); | |
654 | ||
52d86690 | 655 | return -ERRNO_VALUE(error); |
843d2643 LP |
656 | } |
657 | ||
2149e37c | 658 | int log_dump_internal( |
ff524019 ZJS |
659 | int level, |
660 | int error, | |
661 | const char *file, | |
662 | int line, | |
663 | const char *func, | |
664 | char *buffer) { | |
2149e37c | 665 | |
ff524019 | 666 | LogRealm realm = LOG_REALM_REMOVE_LEVEL(level); |
5c0aa72a | 667 | PROTECT_ERRNO; |
2149e37c LP |
668 | |
669 | /* This modifies the buffer... */ | |
670 | ||
ff524019 | 671 | if (_likely_(LOG_PRI(level) > log_max_level[realm])) |
52d86690 | 672 | return -ERRNO_VALUE(error); |
2149e37c | 673 | |
93484b47 | 674 | return log_dispatch_internal(level, error, file, line, func, NULL, NULL, NULL, NULL, buffer); |
2149e37c LP |
675 | } |
676 | ||
ff524019 | 677 | int log_internalv_realm( |
086891e5 LP |
678 | int level, |
679 | int error, | |
bcf5c276 | 680 | const char *file, |
086891e5 LP |
681 | int line, |
682 | const char *func, | |
683 | const char *format, | |
684 | va_list ap) { | |
16801e90 | 685 | |
ff524019 | 686 | LogRealm realm = LOG_REALM_REMOVE_LEVEL(level); |
addab137 | 687 | char buffer[LINE_MAX]; |
ff524019 | 688 | PROTECT_ERRNO; |
16801e90 | 689 | |
ff524019 | 690 | if (_likely_(LOG_PRI(level) > log_max_level[realm])) |
52d86690 | 691 | return -ERRNO_VALUE(error); |
16801e90 | 692 | |
b29f6480 | 693 | /* Make sure that %m maps to the specified error (or "Success"). */ |
52d86690 | 694 | errno = ERRNO_VALUE(error); |
086891e5 | 695 | |
4ad2b562 | 696 | (void) vsnprintf(buffer, sizeof buffer, format, ap); |
843d2643 | 697 | |
93484b47 | 698 | return log_dispatch_internal(level, error, file, line, func, NULL, NULL, NULL, NULL, buffer); |
185986c6 | 699 | } |
16801e90 | 700 | |
ff524019 | 701 | int log_internal_realm( |
086891e5 LP |
702 | int level, |
703 | int error, | |
bcf5c276 | 704 | const char *file, |
086891e5 LP |
705 | int line, |
706 | const char *func, | |
707 | const char *format, ...) { | |
17a94911 | 708 | |
17a94911 | 709 | va_list ap; |
bf371116 | 710 | int r; |
17a94911 LP |
711 | |
712 | va_start(ap, format); | |
ff524019 | 713 | r = log_internalv_realm(level, error, file, line, func, format, ap); |
17a94911 LP |
714 | va_end(ap); |
715 | ||
716 | return r; | |
717 | } | |
718 | ||
f6d6d532 | 719 | int log_object_internalv( |
086891e5 LP |
720 | int level, |
721 | int error, | |
bcf5c276 | 722 | const char *file, |
086891e5 LP |
723 | int line, |
724 | const char *func, | |
725 | const char *object_field, | |
726 | const char *object, | |
4b58153d LP |
727 | const char *extra_field, |
728 | const char *extra, | |
086891e5 LP |
729 | const char *format, |
730 | va_list ap) { | |
fdf9f9bb | 731 | |
5c0aa72a | 732 | PROTECT_ERRNO; |
f2341e0a | 733 | char *buffer, *b; |
fdf9f9bb | 734 | |
ff524019 | 735 | if (_likely_(LOG_PRI(level) > log_max_level[LOG_REALM_SYSTEMD])) |
52d86690 | 736 | return -ERRNO_VALUE(error); |
fdf9f9bb | 737 | |
d1a1f0aa | 738 | /* Make sure that %m maps to the specified error (or "Success"). */ |
52d86690 | 739 | errno = ERRNO_VALUE(error); |
086891e5 | 740 | |
f2341e0a LP |
741 | /* Prepend the object name before the message */ |
742 | if (object) { | |
743 | size_t n; | |
744 | ||
745 | n = strlen(object); | |
1741b25c | 746 | buffer = newa(char, n + 2 + LINE_MAX); |
f2341e0a | 747 | b = stpcpy(stpcpy(buffer, object), ": "); |
1741b25c EV |
748 | } else |
749 | b = buffer = newa(char, LINE_MAX); | |
f2341e0a | 750 | |
4ad2b562 | 751 | (void) vsnprintf(b, LINE_MAX, format, ap); |
fdf9f9bb | 752 | |
93484b47 ZJS |
753 | return log_dispatch_internal(level, error, file, line, func, |
754 | object_field, object, extra_field, extra, buffer); | |
fdf9f9bb ZJS |
755 | } |
756 | ||
79008bdd | 757 | int log_object_internal( |
086891e5 LP |
758 | int level, |
759 | int error, | |
bcf5c276 | 760 | const char *file, |
086891e5 LP |
761 | int line, |
762 | const char *func, | |
763 | const char *object_field, | |
764 | const char *object, | |
4b58153d LP |
765 | const char *extra_field, |
766 | const char *extra, | |
086891e5 | 767 | const char *format, ...) { |
fdf9f9bb | 768 | |
fdf9f9bb | 769 | va_list ap; |
bf371116 | 770 | int r; |
fdf9f9bb ZJS |
771 | |
772 | va_start(ap, format); | |
4b58153d | 773 | r = log_object_internalv(level, error, file, line, func, object_field, object, extra_field, extra, format, ap); |
fdf9f9bb ZJS |
774 | va_end(ap); |
775 | ||
776 | return r; | |
777 | } | |
778 | ||
086891e5 LP |
779 | static void log_assert( |
780 | int level, | |
781 | const char *text, | |
782 | const char *file, | |
783 | int line, | |
784 | const char *func, | |
785 | const char *format) { | |
786 | ||
addab137 | 787 | static char buffer[LINE_MAX]; |
ff524019 | 788 | LogRealm realm = LOG_REALM_REMOVE_LEVEL(level); |
185986c6 | 789 | |
ff524019 | 790 | if (_likely_(LOG_PRI(level) > log_max_level[realm])) |
50f72bca ZJS |
791 | return; |
792 | ||
bcfce235 | 793 | DISABLE_WARNING_FORMAT_NONLITERAL; |
4ad2b562 | 794 | (void) snprintf(buffer, sizeof buffer, format, text, file, line, func); |
bcfce235 | 795 | REENABLE_WARNING; |
185986c6 | 796 | |
185986c6 LP |
797 | log_abort_msg = buffer; |
798 | ||
93484b47 | 799 | log_dispatch_internal(level, 0, file, line, func, NULL, NULL, NULL, NULL, buffer); |
5899f3b7 | 800 | } |
34f0e866 | 801 | |
848e863a | 802 | _noreturn_ void log_assert_failed_realm( |
ff524019 ZJS |
803 | LogRealm realm, |
804 | const char *text, | |
805 | const char *file, | |
806 | int line, | |
807 | const char *func) { | |
e11a5c72 | 808 | (void) log_open(); |
ff524019 ZJS |
809 | log_assert(LOG_REALM_PLUS_LEVEL(realm, LOG_CRIT), text, file, line, func, |
810 | "Assertion '%s' failed at %s:%u, function %s(). Aborting."); | |
80514f9c | 811 | abort(); |
b7f33638 MS |
812 | } |
813 | ||
848e863a | 814 | _noreturn_ void log_assert_failed_unreachable_realm( |
ff524019 ZJS |
815 | LogRealm realm, |
816 | const char *text, | |
817 | const char *file, | |
818 | int line, | |
819 | const char *func) { | |
e11a5c72 | 820 | (void) log_open(); |
ff524019 ZJS |
821 | log_assert(LOG_REALM_PLUS_LEVEL(realm, LOG_CRIT), text, file, line, func, |
822 | "Code should not be reached '%s' at %s:%u, function %s(). Aborting."); | |
80514f9c LP |
823 | abort(); |
824 | } | |
825 | ||
ff524019 ZJS |
826 | void log_assert_failed_return_realm( |
827 | LogRealm realm, | |
828 | const char *text, | |
829 | const char *file, | |
830 | int line, | |
831 | const char *func) { | |
e5ca092c | 832 | PROTECT_ERRNO; |
ff524019 ZJS |
833 | log_assert(LOG_REALM_PLUS_LEVEL(realm, LOG_DEBUG), text, file, line, func, |
834 | "Assertion '%s' failed at %s:%u, function %s(). Ignoring."); | |
b7f33638 MS |
835 | } |
836 | ||
ff524019 | 837 | int log_oom_internal(LogRealm realm, const char *file, int line, const char *func) { |
7558e10c LP |
838 | return log_internal_realm(LOG_REALM_PLUS_LEVEL(realm, LOG_ERR), |
839 | ENOMEM, file, line, func, "Out of memory."); | |
6dc1e7e0 MS |
840 | } |
841 | ||
8a03c9ef ZJS |
842 | int log_format_iovec( |
843 | struct iovec *iovec, | |
d3070fbd LP |
844 | size_t iovec_len, |
845 | size_t *n, | |
8a03c9ef ZJS |
846 | bool newline_separator, |
847 | int error, | |
848 | const char *format, | |
849 | va_list ap) { | |
850 | ||
851 | static const char nl = '\n'; | |
852 | ||
853 | while (format && *n + 1 < iovec_len) { | |
854 | va_list aq; | |
855 | char *m; | |
856 | int r; | |
857 | ||
858 | /* We need to copy the va_list structure, | |
859 | * since vasprintf() leaves it afterwards at | |
860 | * an undefined location */ | |
861 | ||
52d86690 | 862 | errno = ERRNO_VALUE(error); |
8a03c9ef ZJS |
863 | |
864 | va_copy(aq, ap); | |
865 | r = vasprintf(&m, format, aq); | |
866 | va_end(aq); | |
867 | if (r < 0) | |
868 | return -EINVAL; | |
869 | ||
870 | /* Now, jump enough ahead, so that we point to | |
871 | * the next format string */ | |
872 | VA_FORMAT_ADVANCE(format, ap); | |
873 | ||
e6a7ec4b | 874 | iovec[(*n)++] = IOVEC_MAKE_STRING(m); |
8a03c9ef ZJS |
875 | |
876 | if (newline_separator) { | |
5cfa2c3d | 877 | iovec[*n] = IOVEC_MAKE((char *)&nl, 1); |
8a03c9ef ZJS |
878 | (*n)++; |
879 | } | |
880 | ||
881 | format = va_arg(ap, char *); | |
882 | } | |
883 | return 0; | |
884 | } | |
885 | ||
877d54e9 LP |
886 | int log_struct_internal( |
887 | int level, | |
086891e5 | 888 | int error, |
877d54e9 LP |
889 | const char *file, |
890 | int line, | |
891 | const char *func, | |
892 | const char *format, ...) { | |
893 | ||
e6a7ec4b | 894 | LogRealm realm = LOG_REALM_REMOVE_LEVEL(level); |
bf371116 LP |
895 | char buf[LINE_MAX]; |
896 | bool found = false; | |
5c0aa72a | 897 | PROTECT_ERRNO; |
877d54e9 | 898 | va_list ap; |
bf371116 | 899 | |
52d86690 ZJS |
900 | if (_likely_(LOG_PRI(level) > log_max_level[realm]) || |
901 | log_target == LOG_TARGET_NULL) | |
902 | return -ERRNO_VALUE(error); | |
877d54e9 LP |
903 | |
904 | if ((level & LOG_FACMASK) == 0) | |
52d86690 | 905 | level |= log_facility; |
877d54e9 | 906 | |
16e4fd87 LP |
907 | if (IN_SET(log_target, |
908 | LOG_TARGET_AUTO, | |
909 | LOG_TARGET_JOURNAL_OR_KMSG, | |
910 | LOG_TARGET_JOURNAL)) { | |
911 | ||
912 | if (open_when_needed) | |
913 | log_open_journal(); | |
914 | ||
915 | if (journal_fd >= 0) { | |
916 | char header[LINE_MAX]; | |
917 | struct iovec iovec[17] = {}; | |
d3070fbd | 918 | size_t n = 0, i; |
16e4fd87 LP |
919 | int r; |
920 | struct msghdr mh = { | |
921 | .msg_iov = iovec, | |
922 | }; | |
923 | bool fallback = false; | |
924 | ||
52d86690 ZJS |
925 | /* If the journal is available do structured logging. |
926 | * Do not report the errno if it is synthetic. */ | |
16e4fd87 LP |
927 | log_do_header(header, sizeof(header), level, error, file, line, func, NULL, NULL, NULL, NULL); |
928 | iovec[n++] = IOVEC_MAKE_STRING(header); | |
929 | ||
930 | va_start(ap, format); | |
931 | r = log_format_iovec(iovec, ELEMENTSOF(iovec), &n, true, error, format, ap); | |
932 | if (r < 0) | |
933 | fallback = true; | |
934 | else { | |
935 | mh.msg_iovlen = n; | |
936 | (void) sendmsg(journal_fd, &mh, MSG_NOSIGNAL); | |
937 | } | |
877d54e9 | 938 | |
16e4fd87 LP |
939 | va_end(ap); |
940 | for (i = 1; i < n; i += 2) | |
941 | free(iovec[i].iov_base); | |
877d54e9 | 942 | |
16e4fd87 LP |
943 | if (!fallback) { |
944 | if (open_when_needed) | |
945 | log_close(); | |
877d54e9 | 946 | |
52d86690 | 947 | return -ERRNO_VALUE(error); |
16e4fd87 LP |
948 | } |
949 | } | |
bf371116 | 950 | } |
877d54e9 | 951 | |
bf371116 | 952 | /* Fallback if journal logging is not available or didn't work. */ |
6357ac66 | 953 | |
bf371116 LP |
954 | va_start(ap, format); |
955 | while (format) { | |
956 | va_list aq; | |
877d54e9 | 957 | |
52d86690 | 958 | errno = ERRNO_VALUE(error); |
877d54e9 | 959 | |
bf371116 | 960 | va_copy(aq, ap); |
4ad2b562 | 961 | (void) vsnprintf(buf, sizeof buf, format, aq); |
bf371116 | 962 | va_end(aq); |
963ddb91 | 963 | |
bf371116 LP |
964 | if (startswith(buf, "MESSAGE=")) { |
965 | found = true; | |
966 | break; | |
877d54e9 | 967 | } |
877d54e9 | 968 | |
bf371116 LP |
969 | VA_FORMAT_ADVANCE(format, ap); |
970 | ||
971 | format = va_arg(ap, char *); | |
877d54e9 | 972 | } |
bf371116 | 973 | va_end(ap); |
877d54e9 | 974 | |
16e4fd87 LP |
975 | if (!found) { |
976 | if (open_when_needed) | |
977 | log_close(); | |
978 | ||
52d86690 | 979 | return -ERRNO_VALUE(error); |
16e4fd87 | 980 | } |
bf371116 | 981 | |
93484b47 | 982 | return log_dispatch_internal(level, error, file, line, func, NULL, NULL, NULL, NULL, buf + 8); |
877d54e9 LP |
983 | } |
984 | ||
915b1d01 LP |
985 | int log_struct_iovec_internal( |
986 | int level, | |
987 | int error, | |
988 | const char *file, | |
989 | int line, | |
990 | const char *func, | |
991 | const struct iovec input_iovec[], | |
992 | size_t n_input_iovec) { | |
993 | ||
994 | LogRealm realm = LOG_REALM_REMOVE_LEVEL(level); | |
995 | PROTECT_ERRNO; | |
996 | size_t i; | |
997 | char *m; | |
998 | ||
52d86690 ZJS |
999 | if (_likely_(LOG_PRI(level) > log_max_level[realm]) || |
1000 | log_target == LOG_TARGET_NULL) | |
1001 | return -ERRNO_VALUE(error); | |
915b1d01 LP |
1002 | |
1003 | if ((level & LOG_FACMASK) == 0) | |
52d86690 | 1004 | level |= log_facility; |
915b1d01 LP |
1005 | |
1006 | if (IN_SET(log_target, LOG_TARGET_AUTO, | |
1007 | LOG_TARGET_JOURNAL_OR_KMSG, | |
1008 | LOG_TARGET_JOURNAL) && | |
1009 | journal_fd >= 0) { | |
1010 | ||
1011 | struct iovec iovec[1 + n_input_iovec*2]; | |
1012 | char header[LINE_MAX]; | |
1013 | struct msghdr mh = { | |
1014 | .msg_iov = iovec, | |
1015 | .msg_iovlen = 1 + n_input_iovec*2, | |
1016 | }; | |
1017 | ||
1018 | log_do_header(header, sizeof(header), level, error, file, line, func, NULL, NULL, NULL, NULL); | |
1019 | iovec[0] = IOVEC_MAKE_STRING(header); | |
1020 | ||
1021 | for (i = 0; i < n_input_iovec; i++) { | |
1022 | iovec[1+i*2] = input_iovec[i]; | |
1023 | iovec[1+i*2+1] = IOVEC_MAKE_STRING("\n"); | |
1024 | } | |
1025 | ||
1026 | if (sendmsg(journal_fd, &mh, MSG_NOSIGNAL) >= 0) | |
52d86690 | 1027 | return -ERRNO_VALUE(error); |
915b1d01 LP |
1028 | } |
1029 | ||
d27b725a LP |
1030 | for (i = 0; i < n_input_iovec; i++) |
1031 | if (memory_startswith(input_iovec[i].iov_base, input_iovec[i].iov_len, "MESSAGE=")) | |
915b1d01 | 1032 | break; |
915b1d01 LP |
1033 | |
1034 | if (_unlikely_(i >= n_input_iovec)) /* Couldn't find MESSAGE=? */ | |
52d86690 | 1035 | return -ERRNO_VALUE(error); |
915b1d01 | 1036 | |
fbd0b64f LP |
1037 | m = strndupa(input_iovec[i].iov_base + STRLEN("MESSAGE="), |
1038 | input_iovec[i].iov_len - STRLEN("MESSAGE=")); | |
915b1d01 LP |
1039 | |
1040 | return log_dispatch_internal(level, error, file, line, func, NULL, NULL, NULL, NULL, m); | |
1041 | } | |
1042 | ||
34f0e866 LP |
1043 | int log_set_target_from_string(const char *e) { |
1044 | LogTarget t; | |
1045 | ||
5ba081b0 LP |
1046 | t = log_target_from_string(e); |
1047 | if (t < 0) | |
34f0e866 LP |
1048 | return -EINVAL; |
1049 | ||
1050 | log_set_target(t); | |
1051 | return 0; | |
1052 | } | |
1053 | ||
ff524019 | 1054 | int log_set_max_level_from_string_realm(LogRealm realm, const char *e) { |
34f0e866 LP |
1055 | int t; |
1056 | ||
5ba081b0 LP |
1057 | t = log_level_from_string(e); |
1058 | if (t < 0) | |
737af734 | 1059 | return -EINVAL; |
34f0e866 | 1060 | |
ff524019 | 1061 | log_set_max_level_realm(realm, t); |
34f0e866 LP |
1062 | return 0; |
1063 | } | |
1064 | ||
96287a49 | 1065 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
1de1c9c3 LP |
1066 | |
1067 | /* | |
1068 | * The systemd.log_xyz= settings are parsed by all tools, and | |
1069 | * so is "debug". | |
1070 | * | |
5e07a79e LP |
1071 | * However, "quiet" is only parsed by PID 1, and only turns of |
1072 | * status output to /dev/console, but does not alter the log | |
1073 | * level. | |
1de1c9c3 LP |
1074 | */ |
1075 | ||
1076 | if (streq(key, "debug") && !value) | |
1077 | log_set_max_level(LOG_DEBUG); | |
1078 | ||
1d84ad94 LP |
1079 | else if (proc_cmdline_key_streq(key, "systemd.log_target")) { |
1080 | ||
1081 | if (proc_cmdline_value_missing(key, value)) | |
1082 | return 0; | |
1de1c9c3 LP |
1083 | |
1084 | if (log_set_target_from_string(value) < 0) | |
1085 | log_warning("Failed to parse log target '%s'. Ignoring.", value); | |
1086 | ||
1d84ad94 LP |
1087 | } else if (proc_cmdline_key_streq(key, "systemd.log_level")) { |
1088 | ||
1089 | if (proc_cmdline_value_missing(key, value)) | |
1090 | return 0; | |
1de1c9c3 LP |
1091 | |
1092 | if (log_set_max_level_from_string(value) < 0) | |
1093 | log_warning("Failed to parse log level '%s'. Ignoring.", value); | |
1094 | ||
1d84ad94 | 1095 | } else if (proc_cmdline_key_streq(key, "systemd.log_color")) { |
1de1c9c3 | 1096 | |
1d84ad94 | 1097 | if (log_show_color_from_string(value ?: "1") < 0) |
1de1c9c3 LP |
1098 | log_warning("Failed to parse log color setting '%s'. Ignoring.", value); |
1099 | ||
1d84ad94 | 1100 | } else if (proc_cmdline_key_streq(key, "systemd.log_location")) { |
1de1c9c3 | 1101 | |
1d84ad94 | 1102 | if (log_show_location_from_string(value ?: "1") < 0) |
1de1c9c3 LP |
1103 | log_warning("Failed to parse log location setting '%s'. Ignoring.", value); |
1104 | } | |
1105 | ||
1106 | return 0; | |
1107 | } | |
1108 | ||
ff524019 | 1109 | void log_parse_environment_realm(LogRealm realm) { |
e3e42fc2 ZJS |
1110 | /* Do not call from library code. */ |
1111 | ||
34f0e866 | 1112 | const char *e; |
b8d0ffc2 | 1113 | |
5f4a8823 ZJS |
1114 | if (getpid_cached() == 1 || get_ctty_devnr(0, NULL) < 0) |
1115 | /* Only try to read the command line in daemons. We assume that anything that has a | |
1116 | * controlling tty is user stuff. For PID1 we do a special check in case it hasn't | |
1117 | * closed the console yet. */ | |
1d84ad94 | 1118 | (void) proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_STRIP_RD_PREFIX); |
34f0e866 | 1119 | |
a99e002c | 1120 | e = getenv("SYSTEMD_LOG_TARGET"); |
88fae6e0 | 1121 | if (e && log_set_target_from_string(e) < 0) |
f0ea29ea | 1122 | log_warning("Failed to parse log target '%s'. Ignoring.", e); |
34f0e866 | 1123 | |
a99e002c | 1124 | e = getenv("SYSTEMD_LOG_LEVEL"); |
ff524019 | 1125 | if (e && log_set_max_level_from_string_realm(realm, e) < 0) |
f0ea29ea | 1126 | log_warning("Failed to parse log level '%s'. Ignoring.", e); |
bbe63281 | 1127 | |
a99e002c | 1128 | e = getenv("SYSTEMD_LOG_COLOR"); |
88fae6e0 | 1129 | if (e && log_show_color_from_string(e) < 0) |
df2452c5 | 1130 | log_warning("Failed to parse log color '%s'. Ignoring.", e); |
bbe63281 | 1131 | |
a99e002c | 1132 | e = getenv("SYSTEMD_LOG_LOCATION"); |
88fae6e0 | 1133 | if (e && log_show_location_from_string(e) < 0) |
df2452c5 | 1134 | log_warning("Failed to parse log location '%s'. Ignoring.", e); |
34f0e866 LP |
1135 | } |
1136 | ||
1adf1049 LP |
1137 | LogTarget log_get_target(void) { |
1138 | return log_target; | |
1139 | } | |
1140 | ||
ff524019 ZJS |
1141 | int log_get_max_level_realm(LogRealm realm) { |
1142 | return log_max_level[realm]; | |
1adf1049 LP |
1143 | } |
1144 | ||
bbe63281 LP |
1145 | void log_show_color(bool b) { |
1146 | show_color = b; | |
1147 | } | |
1148 | ||
b1e90ec5 ZJS |
1149 | bool log_get_show_color(void) { |
1150 | return show_color; | |
1151 | } | |
1152 | ||
bbe63281 LP |
1153 | void log_show_location(bool b) { |
1154 | show_location = b; | |
1155 | } | |
1156 | ||
b1e90ec5 ZJS |
1157 | bool log_get_show_location(void) { |
1158 | return show_location; | |
1159 | } | |
1160 | ||
bbe63281 LP |
1161 | int log_show_color_from_string(const char *e) { |
1162 | int t; | |
1163 | ||
5ba081b0 LP |
1164 | t = parse_boolean(e); |
1165 | if (t < 0) | |
1166 | return t; | |
bbe63281 LP |
1167 | |
1168 | log_show_color(t); | |
1169 | return 0; | |
1170 | } | |
1171 | ||
1172 | int log_show_location_from_string(const char *e) { | |
1173 | int t; | |
1174 | ||
5ba081b0 LP |
1175 | t = parse_boolean(e); |
1176 | if (t < 0) | |
1177 | return t; | |
bbe63281 LP |
1178 | |
1179 | log_show_location(t); | |
1180 | return 0; | |
1181 | } | |
1182 | ||
81270860 | 1183 | bool log_on_console(void) { |
5b5688af ZJS |
1184 | if (IN_SET(log_target, LOG_TARGET_CONSOLE, |
1185 | LOG_TARGET_CONSOLE_PREFIXED)) | |
81270860 LP |
1186 | return true; |
1187 | ||
1188 | return syslog_fd < 0 && kmsg_fd < 0 && journal_fd < 0; | |
1189 | } | |
1190 | ||
2c5859af | 1191 | static const char *const log_target_table[_LOG_TARGET_MAX] = { |
34f0e866 | 1192 | [LOG_TARGET_CONSOLE] = "console", |
aca83a53 | 1193 | [LOG_TARGET_CONSOLE_PREFIXED] = "console-prefixed", |
34f0e866 | 1194 | [LOG_TARGET_KMSG] = "kmsg", |
5ba081b0 LP |
1195 | [LOG_TARGET_JOURNAL] = "journal", |
1196 | [LOG_TARGET_JOURNAL_OR_KMSG] = "journal-or-kmsg", | |
1197 | [LOG_TARGET_SYSLOG] = "syslog", | |
843d2643 | 1198 | [LOG_TARGET_SYSLOG_OR_KMSG] = "syslog-or-kmsg", |
5ba081b0 | 1199 | [LOG_TARGET_AUTO] = "auto", |
6c347d50 | 1200 | [LOG_TARGET_NULL] = "null", |
34f0e866 LP |
1201 | }; |
1202 | ||
1203 | DEFINE_STRING_TABLE_LOOKUP(log_target, LogTarget); | |
4daf54a8 ZJS |
1204 | |
1205 | void log_received_signal(int level, const struct signalfd_siginfo *si) { | |
a6ab2365 LP |
1206 | assert(si); |
1207 | ||
1208 | if (pid_is_valid(si->ssi_pid)) { | |
4daf54a8 ZJS |
1209 | _cleanup_free_ char *p = NULL; |
1210 | ||
a6ab2365 | 1211 | (void) get_process_comm(si->ssi_pid, &p); |
4daf54a8 ZJS |
1212 | |
1213 | log_full(level, | |
1fa2f38f | 1214 | "Received SIG%s from PID %"PRIu32" (%s).", |
4daf54a8 ZJS |
1215 | signal_to_string(si->ssi_signo), |
1216 | si->ssi_pid, strna(p)); | |
1217 | } else | |
1218 | log_full(level, | |
1219 | "Received SIG%s.", | |
1220 | signal_to_string(si->ssi_signo)); | |
4daf54a8 | 1221 | } |
c1dc6153 | 1222 | |
158350e8 LP |
1223 | int log_syntax_internal( |
1224 | const char *unit, | |
1225 | int level, | |
1226 | const char *config_file, | |
1227 | unsigned config_line, | |
1228 | int error, | |
1229 | const char *file, | |
1230 | int line, | |
1231 | const char *func, | |
1232 | const char *format, ...) { | |
1233 | ||
1234 | PROTECT_ERRNO; | |
1235 | char buffer[LINE_MAX]; | |
158350e8 | 1236 | va_list ap; |
c2dec702 | 1237 | const char *unit_fmt = NULL; |
158350e8 | 1238 | |
52d86690 ZJS |
1239 | if (_likely_(LOG_PRI(level) > log_max_level[LOG_REALM_SYSTEMD]) || |
1240 | log_target == LOG_TARGET_NULL) | |
1241 | return -ERRNO_VALUE(error); | |
158350e8 | 1242 | |
ee96382f | 1243 | errno = ERRNO_VALUE(error); |
158350e8 LP |
1244 | |
1245 | va_start(ap, format); | |
4ad2b562 | 1246 | (void) vsnprintf(buffer, sizeof buffer, format, ap); |
158350e8 LP |
1247 | va_end(ap); |
1248 | ||
1249 | if (unit) | |
df0ff127 | 1250 | unit_fmt = getpid_cached() == 1 ? "UNIT=%s" : "USER_UNIT=%s"; |
c2dec702 | 1251 | |
bdc34268 ZJS |
1252 | if (config_file) { |
1253 | if (config_line > 0) | |
1254 | return log_struct_internal( | |
1255 | LOG_REALM_PLUS_LEVEL(LOG_REALM_SYSTEMD, level), | |
1256 | error, | |
1257 | file, line, func, | |
1258 | "MESSAGE_ID=" SD_MESSAGE_INVALID_CONFIGURATION_STR, | |
1259 | "CONFIG_FILE=%s", config_file, | |
1260 | "CONFIG_LINE=%u", config_line, | |
1261 | LOG_MESSAGE("%s:%u: %s", config_file, config_line, buffer), | |
1262 | unit_fmt, unit, | |
1263 | NULL); | |
1264 | else | |
1265 | return log_struct_internal( | |
1266 | LOG_REALM_PLUS_LEVEL(LOG_REALM_SYSTEMD, level), | |
1267 | error, | |
1268 | file, line, func, | |
1269 | "MESSAGE_ID=" SD_MESSAGE_INVALID_CONFIGURATION_STR, | |
1270 | "CONFIG_FILE=%s", config_file, | |
1271 | LOG_MESSAGE("%s: %s", config_file, buffer), | |
1272 | unit_fmt, unit, | |
1273 | NULL); | |
1274 | } else if (unit) | |
6bfb1daf ZJS |
1275 | return log_struct_internal( |
1276 | LOG_REALM_PLUS_LEVEL(LOG_REALM_SYSTEMD, level), | |
1277 | error, | |
1278 | file, line, func, | |
1279 | "MESSAGE_ID=" SD_MESSAGE_INVALID_CONFIGURATION_STR, | |
1280 | LOG_MESSAGE("%s: %s", unit, buffer), | |
1281 | unit_fmt, unit, | |
1282 | NULL); | |
1283 | else | |
1284 | return log_struct_internal( | |
1285 | LOG_REALM_PLUS_LEVEL(LOG_REALM_SYSTEMD, level), | |
1286 | error, | |
1287 | file, line, func, | |
1288 | "MESSAGE_ID=" SD_MESSAGE_INVALID_CONFIGURATION_STR, | |
1289 | LOG_MESSAGE("%s", buffer), | |
1290 | NULL); | |
158350e8 | 1291 | } |
48a601fe | 1292 | |
d04ce5a9 LP |
1293 | int log_syntax_invalid_utf8_internal( |
1294 | const char *unit, | |
1295 | int level, | |
1296 | const char *config_file, | |
1297 | unsigned config_line, | |
1298 | const char *file, | |
1299 | int line, | |
1300 | const char *func, | |
1301 | const char *rvalue) { | |
1302 | ||
1303 | _cleanup_free_ char *p = NULL; | |
1304 | ||
1305 | if (rvalue) | |
1306 | p = utf8_escape_invalid(rvalue); | |
1307 | ||
1308 | log_syntax_internal(unit, level, config_file, config_line, 0, file, line, func, | |
1309 | "String is not UTF-8 clean, ignoring assignment: %s", strna(p)); | |
1310 | ||
1311 | return -EINVAL; | |
1312 | } | |
1313 | ||
16e4fd87 LP |
1314 | void log_set_upgrade_syslog_to_journal(bool b) { |
1315 | upgrade_syslog_to_journal = b; | |
6fdb8de4 LP |
1316 | |
1317 | /* Make the change effective immediately */ | |
1318 | if (b) { | |
1319 | if (log_target == LOG_TARGET_SYSLOG) | |
1320 | log_target = LOG_TARGET_JOURNAL; | |
1321 | else if (log_target == LOG_TARGET_SYSLOG_OR_KMSG) | |
1322 | log_target = LOG_TARGET_JOURNAL_OR_KMSG; | |
1323 | } | |
16e4fd87 LP |
1324 | } |
1325 | ||
48a601fe LP |
1326 | void log_set_always_reopen_console(bool b) { |
1327 | always_reopen_console = b; | |
1328 | } | |
16e4fd87 LP |
1329 | |
1330 | void log_set_open_when_needed(bool b) { | |
1331 | open_when_needed = b; | |
1332 | } | |
dccca82b | 1333 | |
adf47c91 LP |
1334 | void log_set_prohibit_ipc(bool b) { |
1335 | prohibit_ipc = b; | |
1336 | } | |
1337 | ||
dccca82b LP |
1338 | int log_emergency_level(void) { |
1339 | /* Returns the log level to use for log_emergency() logging. We use LOG_EMERG only when we are PID 1, as only | |
1340 | * then the system of the whole system is obviously affected. */ | |
1341 | ||
1342 | return getpid_cached() == 1 ? LOG_EMERG : LOG_ERR; | |
1343 | } | |
17cac366 LP |
1344 | |
1345 | int log_dup_console(void) { | |
1346 | int copy; | |
1347 | ||
1348 | /* Duplicate the fd we use for fd logging if it's < 3 and use the copy from now on. This call is useful | |
1349 | * whenever we want to continue logging through the original fd, but want to rearrange stderr. */ | |
1350 | ||
1351 | if (console_fd >= 3) | |
1352 | return 0; | |
1353 | ||
1354 | copy = fcntl(console_fd, F_DUPFD_CLOEXEC, 3); | |
1355 | if (copy < 0) | |
1356 | return -errno; | |
1357 | ||
1358 | console_fd = copy; | |
1359 | return 0; | |
1360 | } | |
6bf3c61c LP |
1361 | |
1362 | void log_setup_service(void) { | |
1363 | /* Sets up logging the way it is most appropriate for running a program as a service. Note that using this | |
1364 | * doesn't make the binary unsuitable for invocation on the command line, as log output will still go to the | |
1365 | * terminal if invoked interactively. */ | |
1366 | ||
1367 | log_set_target(LOG_TARGET_AUTO); | |
1368 | log_parse_environment(); | |
e11a5c72 | 1369 | (void) log_open(); |
6bf3c61c | 1370 | } |