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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
a7334b09 LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2010 Lennart Poettering | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
8 | under the terms of the GNU Lesser General Public License as published by |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
10 | (at your option) any later version. |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 15 | Lesser General Public License for more details. |
a7334b09 | 16 | |
5430f7f2 | 17 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
19 | ***/ | |
20 | ||
c9b97d2a | 21 | #include <errno.h> |
16801e90 | 22 | #include <fcntl.h> |
11c3a366 TA |
23 | #include <inttypes.h> |
24 | #include <limits.h> | |
07630cea LP |
25 | #include <stdarg.h> |
26 | #include <stddef.h> | |
27 | #include <stdio.h> | |
11c3a366 TA |
28 | #include <string.h> |
29 | #include <sys/signalfd.h> | |
16801e90 | 30 | #include <sys/socket.h> |
11c3a366 TA |
31 | #include <sys/time.h> |
32 | #include <sys/uio.h> | |
16801e90 | 33 | #include <sys/un.h> |
11c3a366 | 34 | #include <time.h> |
07630cea | 35 | #include <unistd.h> |
5899f3b7 | 36 | |
158350e8 | 37 | #include "sd-messages.h" |
07630cea | 38 | |
b5efdb8a | 39 | #include "alloc-util.h" |
3ffd4af2 | 40 | #include "fd-util.h" |
f97b34a6 | 41 | #include "format-util.h" |
afc5dbf3 | 42 | #include "io-util.h" |
3ffd4af2 | 43 | #include "log.h" |
07630cea LP |
44 | #include "macro.h" |
45 | #include "missing.h" | |
4e731273 LP |
46 | #include "parse-util.h" |
47 | #include "proc-cmdline.h" | |
0b452006 | 48 | #include "process-util.h" |
24882e06 | 49 | #include "signal-util.h" |
07630cea | 50 | #include "socket-util.h" |
15a5e950 | 51 | #include "stdio-util.h" |
8b43440b | 52 | #include "string-table.h" |
07630cea | 53 | #include "string-util.h" |
7ccbd1ae | 54 | #include "syslog-util.h" |
07630cea | 55 | #include "terminal-util.h" |
93cc7779 | 56 | #include "time-util.h" |
d04ce5a9 | 57 | #include "utf8.h" |
07630cea | 58 | #include "util.h" |
5899f3b7 | 59 | |
bb99a35a LP |
60 | #define SNDBUF_SIZE (8*1024*1024) |
61 | ||
16801e90 | 62 | static LogTarget log_target = LOG_TARGET_CONSOLE; |
ff524019 ZJS |
63 | static int log_max_level[] = {LOG_INFO, LOG_INFO}; |
64 | assert_cc(ELEMENTSOF(log_max_level) == _LOG_REALM_MAX); | |
3eff4208 | 65 | static int log_facility = LOG_DAEMON; |
16801e90 | 66 | |
843d2643 | 67 | static int console_fd = STDERR_FILENO; |
16801e90 LP |
68 | static int syslog_fd = -1; |
69 | static int kmsg_fd = -1; | |
5ba081b0 | 70 | static int journal_fd = -1; |
16801e90 | 71 | |
c31e1495 LP |
72 | static bool syslog_is_stream = false; |
73 | ||
bbe63281 LP |
74 | static bool show_color = false; |
75 | static bool show_location = false; | |
76 | ||
c1dc6153 | 77 | static bool upgrade_syslog_to_journal = false; |
48a601fe | 78 | static bool always_reopen_console = false; |
16e4fd87 | 79 | static bool open_when_needed = false; |
adf47c91 | 80 | static bool prohibit_ipc = false; |
c1dc6153 | 81 | |
35b8ca3a | 82 | /* Akin to glibc's __abort_msg; which is private and we hence cannot |
185986c6 LP |
83 | * use here. */ |
84 | static char *log_abort_msg = NULL; | |
85 | ||
843d2643 LP |
86 | void log_close_console(void) { |
87 | ||
88 | if (console_fd < 0) | |
89 | return; | |
16801e90 | 90 | |
df0ff127 | 91 | if (getpid_cached() == 1) { |
c8513d54 | 92 | if (console_fd >= 3) |
03e334a1 | 93 | safe_close(console_fd); |
c8513d54 | 94 | |
843d2643 | 95 | console_fd = -1; |
16801e90 LP |
96 | } |
97 | } | |
98 | ||
843d2643 | 99 | static int log_open_console(void) { |
16801e90 | 100 | |
843d2643 | 101 | if (console_fd >= 0) |
16801e90 | 102 | return 0; |
843d2643 | 103 | |
48a601fe | 104 | if (always_reopen_console) { |
5ba081b0 | 105 | console_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC); |
cd15c418 | 106 | if (console_fd < 0) |
843d2643 | 107 | return console_fd; |
843d2643 LP |
108 | } else |
109 | console_fd = STDERR_FILENO; | |
110 | ||
111 | return 0; | |
112 | } | |
113 | ||
114 | void log_close_kmsg(void) { | |
03e334a1 | 115 | kmsg_fd = safe_close(kmsg_fd); |
843d2643 LP |
116 | } |
117 | ||
118 | static int log_open_kmsg(void) { | |
16801e90 LP |
119 | |
120 | if (kmsg_fd >= 0) | |
121 | return 0; | |
122 | ||
674f8283 | 123 | kmsg_fd = open("/dev/kmsg", O_WRONLY|O_NOCTTY|O_CLOEXEC); |
cd15c418 | 124 | if (kmsg_fd < 0) |
16801e90 | 125 | return -errno; |
0dae83f9 | 126 | |
16801e90 LP |
127 | return 0; |
128 | } | |
129 | ||
130 | void log_close_syslog(void) { | |
03e334a1 | 131 | syslog_fd = safe_close(syslog_fd); |
16801e90 LP |
132 | } |
133 | ||
c31e1495 | 134 | static int create_log_socket(int type) { |
8b18fdc1 | 135 | struct timeval tv; |
95066a90 | 136 | int fd; |
c31e1495 | 137 | |
8b18fdc1 | 138 | fd = socket(AF_UNIX, type|SOCK_CLOEXEC, 0); |
5ba081b0 | 139 | if (fd < 0) |
c31e1495 LP |
140 | return -errno; |
141 | ||
0474ef7b | 142 | (void) fd_inc_sndbuf(fd, SNDBUF_SIZE); |
bb99a35a | 143 | |
8b18fdc1 LP |
144 | /* We need a blocking fd here since we'd otherwise lose |
145 | messages way too early. However, let's not hang forever in the | |
146 | unlikely case of a deadlock. */ | |
df0ff127 | 147 | if (getpid_cached() == 1) |
4d89874a ZJS |
148 | timeval_store(&tv, 10 * USEC_PER_MSEC); |
149 | else | |
150 | timeval_store(&tv, 10 * USEC_PER_SEC); | |
086891e5 | 151 | (void) setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)); |
8b18fdc1 | 152 | |
c31e1495 LP |
153 | return fd; |
154 | } | |
155 | ||
843d2643 | 156 | static int log_open_syslog(void) { |
95066a90 LP |
157 | |
158 | static const union sockaddr_union sa = { | |
b92bea5d ZJS |
159 | .un.sun_family = AF_UNIX, |
160 | .un.sun_path = "/dev/log", | |
161 | }; | |
16801e90 | 162 | |
95066a90 LP |
163 | int r; |
164 | ||
16801e90 LP |
165 | if (syslog_fd >= 0) |
166 | return 0; | |
167 | ||
5ba081b0 LP |
168 | syslog_fd = create_log_socket(SOCK_DGRAM); |
169 | if (syslog_fd < 0) { | |
170 | r = syslog_fd; | |
843d2643 | 171 | goto fail; |
16801e90 LP |
172 | } |
173 | ||
fc2fffe7 | 174 | if (connect(syslog_fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
03e334a1 | 175 | safe_close(syslog_fd); |
c31e1495 LP |
176 | |
177 | /* Some legacy syslog systems still use stream | |
178 | * sockets. They really shouldn't. But what can we | |
179 | * do... */ | |
5ba081b0 LP |
180 | syslog_fd = create_log_socket(SOCK_STREAM); |
181 | if (syslog_fd < 0) { | |
182 | r = syslog_fd; | |
c31e1495 LP |
183 | goto fail; |
184 | } | |
185 | ||
fc2fffe7 | 186 | if (connect(syslog_fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
c31e1495 LP |
187 | r = -errno; |
188 | goto fail; | |
189 | } | |
190 | ||
191 | syslog_is_stream = true; | |
192 | } else | |
193 | syslog_is_stream = false; | |
194 | ||
16801e90 | 195 | return 0; |
843d2643 LP |
196 | |
197 | fail: | |
198 | log_close_syslog(); | |
843d2643 LP |
199 | return r; |
200 | } | |
201 | ||
5ba081b0 | 202 | void log_close_journal(void) { |
03e334a1 | 203 | journal_fd = safe_close(journal_fd); |
5ba081b0 LP |
204 | } |
205 | ||
206 | static int log_open_journal(void) { | |
95066a90 LP |
207 | |
208 | static const union sockaddr_union sa = { | |
b92bea5d ZJS |
209 | .un.sun_family = AF_UNIX, |
210 | .un.sun_path = "/run/systemd/journal/socket", | |
211 | }; | |
95066a90 | 212 | |
5ba081b0 LP |
213 | int r; |
214 | ||
215 | if (journal_fd >= 0) | |
216 | return 0; | |
217 | ||
218 | journal_fd = create_log_socket(SOCK_DGRAM); | |
219 | if (journal_fd < 0) { | |
220 | r = journal_fd; | |
221 | goto fail; | |
222 | } | |
223 | ||
fc2fffe7 | 224 | if (connect(journal_fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
5ba081b0 LP |
225 | r = -errno; |
226 | goto fail; | |
227 | } | |
228 | ||
5ba081b0 LP |
229 | return 0; |
230 | ||
231 | fail: | |
232 | log_close_journal(); | |
5ba081b0 LP |
233 | return r; |
234 | } | |
235 | ||
843d2643 LP |
236 | int log_open(void) { |
237 | int r; | |
238 | ||
e3e42fc2 ZJS |
239 | /* Do not call from library code. */ |
240 | ||
843d2643 LP |
241 | /* If we don't use the console we close it here, to not get |
242 | * killed by SAK. If we don't use syslog we close it here so | |
243 | * that we are not confused by somebody deleting the socket in | |
244 | * the fs. If we don't use /dev/kmsg we still keep it open, | |
245 | * because there is no reason to close it. */ | |
246 | ||
9fae33d2 | 247 | if (log_target == LOG_TARGET_NULL) { |
5ba081b0 | 248 | log_close_journal(); |
9fae33d2 LP |
249 | log_close_syslog(); |
250 | log_close_console(); | |
251 | return 0; | |
252 | } | |
253 | ||
5b5688af | 254 | if (!IN_SET(log_target, LOG_TARGET_AUTO, LOG_TARGET_SAFE) || |
df0ff127 | 255 | getpid_cached() == 1 || |
f41c094c | 256 | isatty(STDERR_FILENO) <= 0) { |
bb7df0da | 257 | |
adf47c91 LP |
258 | if (!prohibit_ipc && |
259 | IN_SET(log_target, LOG_TARGET_AUTO, | |
5b5688af ZJS |
260 | LOG_TARGET_JOURNAL_OR_KMSG, |
261 | LOG_TARGET_JOURNAL)) { | |
5ba081b0 LP |
262 | r = log_open_journal(); |
263 | if (r >= 0) { | |
264 | log_close_syslog(); | |
bb7df0da LP |
265 | log_close_console(); |
266 | return r; | |
267 | } | |
5ba081b0 LP |
268 | } |
269 | ||
adf47c91 LP |
270 | if (!prohibit_ipc && |
271 | IN_SET(log_target, LOG_TARGET_SYSLOG_OR_KMSG, | |
5b5688af | 272 | LOG_TARGET_SYSLOG)) { |
5ba081b0 LP |
273 | r = log_open_syslog(); |
274 | if (r >= 0) { | |
275 | log_close_journal(); | |
276 | log_close_console(); | |
277 | return r; | |
278 | } | |
279 | } | |
280 | ||
5b5688af ZJS |
281 | if (IN_SET(log_target, LOG_TARGET_AUTO, |
282 | LOG_TARGET_SAFE, | |
283 | LOG_TARGET_JOURNAL_OR_KMSG, | |
284 | LOG_TARGET_SYSLOG_OR_KMSG, | |
285 | LOG_TARGET_KMSG)) { | |
5ba081b0 LP |
286 | r = log_open_kmsg(); |
287 | if (r >= 0) { | |
288 | log_close_journal(); | |
bb7df0da LP |
289 | log_close_syslog(); |
290 | log_close_console(); | |
291 | return r; | |
292 | } | |
5ba081b0 | 293 | } |
bb7df0da | 294 | } |
843d2643 | 295 | |
5ba081b0 | 296 | log_close_journal(); |
843d2643 | 297 | log_close_syslog(); |
dcdf86bb | 298 | |
843d2643 | 299 | return log_open_console(); |
16801e90 LP |
300 | } |
301 | ||
302 | void log_set_target(LogTarget target) { | |
303 | assert(target >= 0); | |
304 | assert(target < _LOG_TARGET_MAX); | |
305 | ||
c1dc6153 LP |
306 | if (upgrade_syslog_to_journal) { |
307 | if (target == LOG_TARGET_SYSLOG) | |
308 | target = LOG_TARGET_JOURNAL; | |
309 | else if (target == LOG_TARGET_SYSLOG_OR_KMSG) | |
310 | target = LOG_TARGET_JOURNAL_OR_KMSG; | |
311 | } | |
312 | ||
16801e90 LP |
313 | log_target = target; |
314 | } | |
315 | ||
871e5809 | 316 | void log_close(void) { |
e3e42fc2 ZJS |
317 | /* Do not call from library code. */ |
318 | ||
5ba081b0 | 319 | log_close_journal(); |
871e5809 | 320 | log_close_syslog(); |
5ba081b0 LP |
321 | log_close_kmsg(); |
322 | log_close_console(); | |
871e5809 LP |
323 | } |
324 | ||
4d8a7798 | 325 | void log_forget_fds(void) { |
e3e42fc2 ZJS |
326 | /* Do not call from library code. */ |
327 | ||
5ba081b0 | 328 | console_fd = kmsg_fd = syslog_fd = journal_fd = -1; |
4d8a7798 MS |
329 | } |
330 | ||
ff524019 | 331 | void log_set_max_level_realm(LogRealm realm, int level) { |
16801e90 | 332 | assert((level & LOG_PRIMASK) == level); |
ff524019 | 333 | assert(realm < ELEMENTSOF(log_max_level)); |
16801e90 | 334 | |
ff524019 | 335 | log_max_level[realm] = level; |
16801e90 LP |
336 | } |
337 | ||
3eff4208 LP |
338 | void log_set_facility(int facility) { |
339 | log_facility = facility; | |
340 | } | |
341 | ||
843d2643 | 342 | static int write_to_console( |
20c03b7b | 343 | int level, |
086891e5 | 344 | int error, |
95066a90 | 345 | const char *file, |
20c03b7b LP |
346 | int line, |
347 | const char *func, | |
348 | const char *buffer) { | |
5899f3b7 | 349 | |
79c95440 | 350 | char location[256], prefix[1 + DECIMAL_STR_MAX(int) + 2]; |
aca83a53 | 351 | struct iovec iovec[6] = {}; |
843d2643 LP |
352 | unsigned n = 0; |
353 | bool highlight; | |
5899f3b7 | 354 | |
843d2643 LP |
355 | if (console_fd < 0) |
356 | return 0; | |
357 | ||
aca83a53 | 358 | if (log_target == LOG_TARGET_CONSOLE_PREFIXED) { |
0474ef7b | 359 | xsprintf(prefix, "<%i>", level); |
e6a7ec4b | 360 | iovec[n++] = IOVEC_MAKE_STRING(prefix); |
aca83a53 LP |
361 | } |
362 | ||
bbe63281 | 363 | highlight = LOG_PRI(level) <= LOG_ERR && show_color; |
843d2643 | 364 | |
674f8283 | 365 | if (show_location) { |
a7419dbc | 366 | xsprintf(location, "(%s:%i) ", file, line); |
e6a7ec4b | 367 | iovec[n++] = IOVEC_MAKE_STRING(location); |
674f8283 LP |
368 | } |
369 | ||
843d2643 | 370 | if (highlight) |
e6a7ec4b LP |
371 | iovec[n++] = IOVEC_MAKE_STRING(ANSI_HIGHLIGHT_RED); |
372 | iovec[n++] = IOVEC_MAKE_STRING(buffer); | |
843d2643 | 373 | if (highlight) |
e6a7ec4b LP |
374 | iovec[n++] = IOVEC_MAKE_STRING(ANSI_NORMAL); |
375 | iovec[n++] = IOVEC_MAKE_STRING("\n"); | |
843d2643 | 376 | |
0e6eaa2d LP |
377 | if (writev(console_fd, iovec, n) < 0) { |
378 | ||
df0ff127 | 379 | if (errno == EIO && getpid_cached() == 1) { |
0e6eaa2d LP |
380 | |
381 | /* If somebody tried to kick us from our | |
382 | * console tty (via vhangup() or suchlike), | |
383 | * try to reconnect */ | |
384 | ||
385 | log_close_console(); | |
386 | log_open_console(); | |
387 | ||
388 | if (console_fd < 0) | |
389 | return 0; | |
390 | ||
391 | if (writev(console_fd, iovec, n) < 0) | |
392 | return -errno; | |
393 | } else | |
394 | return -errno; | |
395 | } | |
5899f3b7 | 396 | |
843d2643 | 397 | return 1; |
16801e90 | 398 | } |
5899f3b7 | 399 | |
16801e90 | 400 | static int write_to_syslog( |
086891e5 LP |
401 | int level, |
402 | int error, | |
95066a90 | 403 | const char *file, |
086891e5 LP |
404 | int line, |
405 | const char *func, | |
086891e5 | 406 | const char *buffer) { |
16801e90 | 407 | |
5ffa8c81 ZJS |
408 | char header_priority[2 + DECIMAL_STR_MAX(int) + 1], |
409 | header_time[64], | |
410 | header_pid[4 + DECIMAL_STR_MAX(pid_t) + 1]; | |
b92bea5d ZJS |
411 | struct iovec iovec[5] = {}; |
412 | struct msghdr msghdr = { | |
413 | .msg_iov = iovec, | |
414 | .msg_iovlen = ELEMENTSOF(iovec), | |
415 | }; | |
16801e90 LP |
416 | time_t t; |
417 | struct tm *tm; | |
418 | ||
419 | if (syslog_fd < 0) | |
843d2643 | 420 | return 0; |
16801e90 | 421 | |
5ffa8c81 | 422 | xsprintf(header_priority, "<%i>", level); |
16801e90 LP |
423 | |
424 | t = (time_t) (now(CLOCK_REALTIME) / USEC_PER_SEC); | |
fdf9f9bb ZJS |
425 | tm = localtime(&t); |
426 | if (!tm) | |
16801e90 LP |
427 | return -EINVAL; |
428 | ||
429 | if (strftime(header_time, sizeof(header_time), "%h %e %T ", tm) <= 0) | |
430 | return -EINVAL; | |
431 | ||
df0ff127 | 432 | xsprintf(header_pid, "["PID_FMT"]: ", getpid_cached()); |
16801e90 | 433 | |
e6a7ec4b LP |
434 | iovec[0] = IOVEC_MAKE_STRING(header_priority); |
435 | iovec[1] = IOVEC_MAKE_STRING(header_time); | |
436 | iovec[2] = IOVEC_MAKE_STRING(program_invocation_short_name); | |
437 | iovec[3] = IOVEC_MAKE_STRING(header_pid); | |
438 | iovec[4] = IOVEC_MAKE_STRING(buffer); | |
16801e90 | 439 | |
c899f8c6 | 440 | /* When using syslog via SOCK_STREAM separate the messages by NUL chars */ |
c31e1495 LP |
441 | if (syslog_is_stream) |
442 | iovec[4].iov_len++; | |
443 | ||
c31e1495 LP |
444 | for (;;) { |
445 | ssize_t n; | |
446 | ||
8f7f7a1b MS |
447 | n = sendmsg(syslog_fd, &msghdr, MSG_NOSIGNAL); |
448 | if (n < 0) | |
c31e1495 LP |
449 | return -errno; |
450 | ||
451 | if (!syslog_is_stream || | |
452 | (size_t) n >= IOVEC_TOTAL_SIZE(iovec, ELEMENTSOF(iovec))) | |
453 | break; | |
454 | ||
455 | IOVEC_INCREMENT(iovec, ELEMENTSOF(iovec), n); | |
456 | } | |
16801e90 | 457 | |
843d2643 | 458 | return 1; |
16801e90 LP |
459 | } |
460 | ||
461 | static int write_to_kmsg( | |
086891e5 LP |
462 | int level, |
463 | int error, | |
bcf5c276 | 464 | const char *file, |
086891e5 LP |
465 | int line, |
466 | const char *func, | |
086891e5 | 467 | const char *buffer) { |
16801e90 | 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 | |
5ffa8c81 | 476 | xsprintf(header_priority, "<%i>", level); |
df0ff127 | 477 | xsprintf(header_pid, "["PID_FMT"]: ", getpid_cached()); |
16801e90 | 478 | |
e6a7ec4b LP |
479 | iovec[0] = IOVEC_MAKE_STRING(header_priority); |
480 | iovec[1] = IOVEC_MAKE_STRING(program_invocation_short_name); | |
481 | iovec[2] = IOVEC_MAKE_STRING(header_pid); | |
482 | iovec[3] = IOVEC_MAKE_STRING(buffer); | |
483 | iovec[4] = IOVEC_MAKE_STRING("\n"); | |
16801e90 LP |
484 | |
485 | if (writev(kmsg_fd, iovec, ELEMENTSOF(iovec)) < 0) | |
486 | return -errno; | |
487 | ||
843d2643 | 488 | return 1; |
16801e90 LP |
489 | } |
490 | ||
086891e5 LP |
491 | static int log_do_header( |
492 | char *header, | |
493 | size_t size, | |
494 | int level, | |
495 | int error, | |
496 | const char *file, int line, const char *func, | |
4b58153d LP |
497 | const char *object_field, const char *object, |
498 | const char *extra_field, const char *extra) { | |
086891e5 | 499 | |
41a79f10 | 500 | snprintf(header, size, |
5ba081b0 | 501 | "PRIORITY=%i\n" |
3eff4208 | 502 | "SYSLOG_FACILITY=%i\n" |
086891e5 | 503 | "%s%s%s" |
e429981b | 504 | "%s%.*i%s" |
086891e5 LP |
505 | "%s%s%s" |
506 | "%s%.*i%s" | |
507 | "%s%s%s" | |
4b58153d | 508 | "%s%s%s" |
41a79f10 | 509 | "SYSLOG_IDENTIFIER=%s\n", |
5ba081b0 | 510 | LOG_PRI(level), |
3eff4208 | 511 | LOG_FAC(level), |
086891e5 LP |
512 | isempty(file) ? "" : "CODE_FILE=", |
513 | isempty(file) ? "" : file, | |
514 | isempty(file) ? "" : "\n", | |
e429981b ZJS |
515 | line ? "CODE_LINE=" : "", |
516 | line ? 1 : 0, line, /* %.0d means no output too, special case for 0 */ | |
517 | line ? "\n" : "", | |
b457b33d | 518 | isempty(func) ? "" : "CODE_FUNC=", |
086891e5 LP |
519 | isempty(func) ? "" : func, |
520 | isempty(func) ? "" : "\n", | |
521 | error ? "ERRNO=" : "", | |
522 | error ? 1 : 0, error, | |
523 | error ? "\n" : "", | |
524 | isempty(object) ? "" : object_field, | |
525 | isempty(object) ? "" : object, | |
526 | isempty(object) ? "" : "\n", | |
4b58153d LP |
527 | isempty(extra) ? "" : extra_field, |
528 | isempty(extra) ? "" : extra, | |
529 | isempty(extra) ? "" : "\n", | |
d29b05a4 | 530 | program_invocation_short_name); |
086891e5 | 531 | |
41a79f10 ZJS |
532 | return 0; |
533 | } | |
5ba081b0 | 534 | |
41a79f10 | 535 | static int write_to_journal( |
086891e5 LP |
536 | int level, |
537 | int error, | |
bcf5c276 | 538 | const char *file, |
086891e5 LP |
539 | int line, |
540 | const char *func, | |
541 | const char *object_field, | |
542 | const char *object, | |
4b58153d LP |
543 | const char *extra_field, |
544 | const char *extra, | |
086891e5 | 545 | const char *buffer) { |
41a79f10 ZJS |
546 | |
547 | char header[LINE_MAX]; | |
b92bea5d ZJS |
548 | struct iovec iovec[4] = {}; |
549 | struct msghdr mh = {}; | |
41a79f10 ZJS |
550 | |
551 | if (journal_fd < 0) | |
552 | return 0; | |
553 | ||
4b58153d | 554 | log_do_header(header, sizeof(header), level, error, file, line, func, object_field, object, extra_field, extra); |
5ba081b0 | 555 | |
e6a7ec4b LP |
556 | iovec[0] = IOVEC_MAKE_STRING(header); |
557 | iovec[1] = IOVEC_MAKE_STRING("MESSAGE="); | |
558 | iovec[2] = IOVEC_MAKE_STRING(buffer); | |
559 | iovec[3] = IOVEC_MAKE_STRING("\n"); | |
5ba081b0 | 560 | |
5ba081b0 LP |
561 | mh.msg_iov = iovec; |
562 | mh.msg_iovlen = ELEMENTSOF(iovec); | |
563 | ||
564 | if (sendmsg(journal_fd, &mh, MSG_NOSIGNAL) < 0) | |
565 | return -errno; | |
566 | ||
567 | return 1; | |
568 | } | |
569 | ||
93484b47 | 570 | int log_dispatch_internal( |
086891e5 LP |
571 | int level, |
572 | int error, | |
95066a90 | 573 | const char *file, |
086891e5 LP |
574 | int line, |
575 | const char *func, | |
576 | const char *object_field, | |
577 | const char *object, | |
4b58153d LP |
578 | const char *extra, |
579 | const char *extra_field, | |
086891e5 | 580 | char *buffer) { |
843d2643 | 581 | |
bf371116 | 582 | assert(buffer); |
843d2643 | 583 | |
0474ef7b LP |
584 | if (error < 0) |
585 | error = -error; | |
586 | ||
9fae33d2 | 587 | if (log_target == LOG_TARGET_NULL) |
bf371116 | 588 | return -error; |
9fae33d2 | 589 | |
29db5834 | 590 | /* Patch in LOG_DAEMON facility if necessary */ |
7d76f312 | 591 | if ((level & LOG_FACMASK) == 0) |
3eff4208 | 592 | level = log_facility | LOG_PRI(level); |
29db5834 | 593 | |
16e4fd87 LP |
594 | if (open_when_needed) |
595 | log_open(); | |
596 | ||
9726b29e LP |
597 | do { |
598 | char *e; | |
9499b235 | 599 | int k = 0; |
843d2643 | 600 | |
9726b29e | 601 | buffer += strspn(buffer, NEWLINE); |
843d2643 | 602 | |
9726b29e LP |
603 | if (buffer[0] == 0) |
604 | break; | |
843d2643 | 605 | |
9726b29e LP |
606 | if ((e = strpbrk(buffer, NEWLINE))) |
607 | *(e++) = 0; | |
843d2643 | 608 | |
5b5688af ZJS |
609 | if (IN_SET(log_target, LOG_TARGET_AUTO, |
610 | LOG_TARGET_JOURNAL_OR_KMSG, | |
611 | LOG_TARGET_JOURNAL)) { | |
5ba081b0 | 612 | |
4b58153d | 613 | k = write_to_journal(level, error, file, line, func, object_field, object, extra_field, extra, buffer); |
4e7bc3f3 LP |
614 | if (k < 0) { |
615 | if (k != -EAGAIN) | |
5ba081b0 LP |
616 | log_close_journal(); |
617 | log_open_kmsg(); | |
bf371116 | 618 | } |
5ba081b0 LP |
619 | } |
620 | ||
5b5688af ZJS |
621 | if (IN_SET(log_target, LOG_TARGET_SYSLOG_OR_KMSG, |
622 | LOG_TARGET_SYSLOG)) { | |
9726b29e | 623 | |
4b58153d | 624 | k = write_to_syslog(level, error, file, line, func, buffer); |
4e7bc3f3 LP |
625 | if (k < 0) { |
626 | if (k != -EAGAIN) | |
8f7f7a1b | 627 | log_close_syslog(); |
9726b29e | 628 | log_open_kmsg(); |
bf371116 | 629 | } |
9726b29e LP |
630 | } |
631 | ||
9499b235 | 632 | if (k <= 0 && |
5b5688af ZJS |
633 | IN_SET(log_target, LOG_TARGET_AUTO, |
634 | LOG_TARGET_SAFE, | |
635 | LOG_TARGET_SYSLOG_OR_KMSG, | |
636 | LOG_TARGET_JOURNAL_OR_KMSG, | |
637 | LOG_TARGET_KMSG)) { | |
9726b29e | 638 | |
4b58153d | 639 | k = write_to_kmsg(level, error, file, line, func, buffer); |
4e7bc3f3 LP |
640 | if (k < 0) { |
641 | log_close_kmsg(); | |
9726b29e | 642 | 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 | ||
bf371116 | 655 | return -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 | ||
bf371116 LP |
671 | if (error < 0) |
672 | error = -error; | |
673 | ||
ff524019 | 674 | if (_likely_(LOG_PRI(level) > log_max_level[realm])) |
bf371116 | 675 | return -error; |
2149e37c | 676 | |
93484b47 | 677 | return log_dispatch_internal(level, error, file, line, func, NULL, NULL, NULL, NULL, buffer); |
2149e37c LP |
678 | } |
679 | ||
ff524019 | 680 | int log_internalv_realm( |
086891e5 LP |
681 | int level, |
682 | int error, | |
bcf5c276 | 683 | const char *file, |
086891e5 LP |
684 | int line, |
685 | const char *func, | |
686 | const char *format, | |
687 | va_list ap) { | |
16801e90 | 688 | |
ff524019 | 689 | LogRealm realm = LOG_REALM_REMOVE_LEVEL(level); |
addab137 | 690 | char buffer[LINE_MAX]; |
ff524019 | 691 | PROTECT_ERRNO; |
16801e90 | 692 | |
bf371116 LP |
693 | if (error < 0) |
694 | error = -error; | |
695 | ||
ff524019 | 696 | if (_likely_(LOG_PRI(level) > log_max_level[realm])) |
bf371116 | 697 | return -error; |
16801e90 | 698 | |
086891e5 LP |
699 | /* Make sure that %m maps to the specified error */ |
700 | if (error != 0) | |
bf371116 | 701 | errno = error; |
086891e5 | 702 | |
843d2643 | 703 | vsnprintf(buffer, sizeof(buffer), format, ap); |
843d2643 | 704 | |
93484b47 | 705 | return log_dispatch_internal(level, error, file, line, func, NULL, NULL, NULL, NULL, buffer); |
185986c6 | 706 | } |
16801e90 | 707 | |
ff524019 | 708 | int log_internal_realm( |
086891e5 LP |
709 | int level, |
710 | int error, | |
bcf5c276 | 711 | const char *file, |
086891e5 LP |
712 | int line, |
713 | const char *func, | |
714 | const char *format, ...) { | |
17a94911 | 715 | |
17a94911 | 716 | va_list ap; |
bf371116 | 717 | int r; |
17a94911 LP |
718 | |
719 | va_start(ap, format); | |
ff524019 | 720 | r = log_internalv_realm(level, error, file, line, func, format, ap); |
17a94911 LP |
721 | va_end(ap); |
722 | ||
723 | return r; | |
724 | } | |
725 | ||
79008bdd | 726 | int log_object_internalv( |
086891e5 LP |
727 | int level, |
728 | int error, | |
bcf5c276 | 729 | const char *file, |
086891e5 LP |
730 | int line, |
731 | const char *func, | |
732 | const char *object_field, | |
733 | const char *object, | |
4b58153d LP |
734 | const char *extra_field, |
735 | const char *extra, | |
086891e5 LP |
736 | const char *format, |
737 | va_list ap) { | |
fdf9f9bb | 738 | |
5c0aa72a | 739 | PROTECT_ERRNO; |
f2341e0a | 740 | char *buffer, *b; |
fdf9f9bb | 741 | |
bf371116 LP |
742 | if (error < 0) |
743 | error = -error; | |
744 | ||
ff524019 | 745 | if (_likely_(LOG_PRI(level) > log_max_level[LOG_REALM_SYSTEMD])) |
bf371116 | 746 | return -error; |
fdf9f9bb | 747 | |
086891e5 LP |
748 | /* Make sure that %m maps to the specified error */ |
749 | if (error != 0) | |
bf371116 | 750 | errno = error; |
086891e5 | 751 | |
f2341e0a LP |
752 | /* Prepend the object name before the message */ |
753 | if (object) { | |
754 | size_t n; | |
755 | ||
756 | n = strlen(object); | |
1741b25c | 757 | buffer = newa(char, n + 2 + LINE_MAX); |
f2341e0a | 758 | b = stpcpy(stpcpy(buffer, object), ": "); |
1741b25c EV |
759 | } else |
760 | b = buffer = newa(char, LINE_MAX); | |
f2341e0a | 761 | |
1741b25c | 762 | vsnprintf(b, LINE_MAX, format, ap); |
fdf9f9bb | 763 | |
93484b47 ZJS |
764 | return log_dispatch_internal(level, error, file, line, func, |
765 | object_field, object, extra_field, extra, buffer); | |
fdf9f9bb ZJS |
766 | } |
767 | ||
79008bdd | 768 | int log_object_internal( |
086891e5 LP |
769 | int level, |
770 | int error, | |
bcf5c276 | 771 | const char *file, |
086891e5 LP |
772 | int line, |
773 | const char *func, | |
774 | const char *object_field, | |
775 | const char *object, | |
4b58153d LP |
776 | const char *extra_field, |
777 | const char *extra, | |
086891e5 | 778 | const char *format, ...) { |
fdf9f9bb | 779 | |
fdf9f9bb | 780 | va_list ap; |
bf371116 | 781 | int r; |
fdf9f9bb ZJS |
782 | |
783 | va_start(ap, format); | |
4b58153d | 784 | r = log_object_internalv(level, error, file, line, func, object_field, object, extra_field, extra, format, ap); |
fdf9f9bb ZJS |
785 | va_end(ap); |
786 | ||
787 | return r; | |
788 | } | |
789 | ||
086891e5 LP |
790 | static void log_assert( |
791 | int level, | |
792 | const char *text, | |
793 | const char *file, | |
794 | int line, | |
795 | const char *func, | |
796 | const char *format) { | |
797 | ||
addab137 | 798 | static char buffer[LINE_MAX]; |
ff524019 | 799 | LogRealm realm = LOG_REALM_REMOVE_LEVEL(level); |
185986c6 | 800 | |
ff524019 | 801 | if (_likely_(LOG_PRI(level) > log_max_level[realm])) |
50f72bca ZJS |
802 | return; |
803 | ||
bcfce235 | 804 | DISABLE_WARNING_FORMAT_NONLITERAL; |
a7419dbc | 805 | xsprintf(buffer, format, text, file, line, func); |
bcfce235 | 806 | REENABLE_WARNING; |
185986c6 | 807 | |
185986c6 LP |
808 | log_abort_msg = buffer; |
809 | ||
93484b47 | 810 | log_dispatch_internal(level, 0, file, line, func, NULL, NULL, NULL, NULL, buffer); |
5899f3b7 | 811 | } |
34f0e866 | 812 | |
ff524019 ZJS |
813 | noreturn void log_assert_failed_realm( |
814 | LogRealm realm, | |
815 | const char *text, | |
816 | const char *file, | |
817 | int line, | |
818 | const char *func) { | |
ea89a119 | 819 | log_open(); |
ff524019 ZJS |
820 | log_assert(LOG_REALM_PLUS_LEVEL(realm, LOG_CRIT), text, file, line, func, |
821 | "Assertion '%s' failed at %s:%u, function %s(). Aborting."); | |
80514f9c | 822 | abort(); |
b7f33638 MS |
823 | } |
824 | ||
ff524019 ZJS |
825 | noreturn void log_assert_failed_unreachable_realm( |
826 | LogRealm realm, | |
827 | const char *text, | |
828 | const char *file, | |
829 | int line, | |
830 | const char *func) { | |
ea89a119 | 831 | log_open(); |
ff524019 ZJS |
832 | log_assert(LOG_REALM_PLUS_LEVEL(realm, LOG_CRIT), text, file, line, func, |
833 | "Code should not be reached '%s' at %s:%u, function %s(). Aborting."); | |
80514f9c LP |
834 | abort(); |
835 | } | |
836 | ||
ff524019 ZJS |
837 | void log_assert_failed_return_realm( |
838 | LogRealm realm, | |
839 | const char *text, | |
840 | const char *file, | |
841 | int line, | |
842 | const char *func) { | |
e5ca092c | 843 | PROTECT_ERRNO; |
ff524019 ZJS |
844 | log_assert(LOG_REALM_PLUS_LEVEL(realm, LOG_DEBUG), text, file, line, func, |
845 | "Assertion '%s' failed at %s:%u, function %s(). Ignoring."); | |
b7f33638 MS |
846 | } |
847 | ||
ff524019 | 848 | int log_oom_internal(LogRealm realm, const char *file, int line, const char *func) { |
7558e10c LP |
849 | return log_internal_realm(LOG_REALM_PLUS_LEVEL(realm, LOG_ERR), |
850 | ENOMEM, file, line, func, "Out of memory."); | |
6dc1e7e0 MS |
851 | } |
852 | ||
8a03c9ef ZJS |
853 | int log_format_iovec( |
854 | struct iovec *iovec, | |
d3070fbd LP |
855 | size_t iovec_len, |
856 | size_t *n, | |
8a03c9ef ZJS |
857 | bool newline_separator, |
858 | int error, | |
859 | const char *format, | |
860 | va_list ap) { | |
861 | ||
862 | static const char nl = '\n'; | |
863 | ||
864 | while (format && *n + 1 < iovec_len) { | |
865 | va_list aq; | |
866 | char *m; | |
867 | int r; | |
868 | ||
869 | /* We need to copy the va_list structure, | |
870 | * since vasprintf() leaves it afterwards at | |
871 | * an undefined location */ | |
872 | ||
873 | if (error != 0) | |
874 | errno = error; | |
875 | ||
876 | va_copy(aq, ap); | |
877 | r = vasprintf(&m, format, aq); | |
878 | va_end(aq); | |
879 | if (r < 0) | |
880 | return -EINVAL; | |
881 | ||
882 | /* Now, jump enough ahead, so that we point to | |
883 | * the next format string */ | |
884 | VA_FORMAT_ADVANCE(format, ap); | |
885 | ||
e6a7ec4b | 886 | iovec[(*n)++] = IOVEC_MAKE_STRING(m); |
8a03c9ef ZJS |
887 | |
888 | if (newline_separator) { | |
889 | iovec[*n].iov_base = (char*) &nl; | |
890 | iovec[*n].iov_len = 1; | |
891 | (*n)++; | |
892 | } | |
893 | ||
894 | format = va_arg(ap, char *); | |
895 | } | |
896 | return 0; | |
897 | } | |
898 | ||
877d54e9 LP |
899 | int log_struct_internal( |
900 | int level, | |
086891e5 | 901 | int error, |
877d54e9 LP |
902 | const char *file, |
903 | int line, | |
904 | const char *func, | |
905 | const char *format, ...) { | |
906 | ||
e6a7ec4b | 907 | LogRealm realm = LOG_REALM_REMOVE_LEVEL(level); |
bf371116 LP |
908 | char buf[LINE_MAX]; |
909 | bool found = false; | |
5c0aa72a | 910 | PROTECT_ERRNO; |
877d54e9 | 911 | va_list ap; |
bf371116 LP |
912 | |
913 | if (error < 0) | |
914 | error = -error; | |
877d54e9 | 915 | |
ff524019 | 916 | if (_likely_(LOG_PRI(level) > log_max_level[realm])) |
bf371116 | 917 | return -error; |
877d54e9 LP |
918 | |
919 | if (log_target == LOG_TARGET_NULL) | |
bf371116 | 920 | return -error; |
877d54e9 LP |
921 | |
922 | if ((level & LOG_FACMASK) == 0) | |
923 | level = log_facility | LOG_PRI(level); | |
924 | ||
16e4fd87 LP |
925 | if (IN_SET(log_target, |
926 | LOG_TARGET_AUTO, | |
927 | LOG_TARGET_JOURNAL_OR_KMSG, | |
928 | LOG_TARGET_JOURNAL)) { | |
929 | ||
930 | if (open_when_needed) | |
931 | log_open_journal(); | |
932 | ||
933 | if (journal_fd >= 0) { | |
934 | char header[LINE_MAX]; | |
935 | struct iovec iovec[17] = {}; | |
d3070fbd | 936 | size_t n = 0, i; |
16e4fd87 LP |
937 | int r; |
938 | struct msghdr mh = { | |
939 | .msg_iov = iovec, | |
940 | }; | |
941 | bool fallback = false; | |
942 | ||
943 | /* If the journal is available do structured logging */ | |
944 | log_do_header(header, sizeof(header), level, error, file, line, func, NULL, NULL, NULL, NULL); | |
945 | iovec[n++] = IOVEC_MAKE_STRING(header); | |
946 | ||
947 | va_start(ap, format); | |
948 | r = log_format_iovec(iovec, ELEMENTSOF(iovec), &n, true, error, format, ap); | |
949 | if (r < 0) | |
950 | fallback = true; | |
951 | else { | |
952 | mh.msg_iovlen = n; | |
953 | (void) sendmsg(journal_fd, &mh, MSG_NOSIGNAL); | |
954 | } | |
877d54e9 | 955 | |
16e4fd87 LP |
956 | va_end(ap); |
957 | for (i = 1; i < n; i += 2) | |
958 | free(iovec[i].iov_base); | |
877d54e9 | 959 | |
16e4fd87 LP |
960 | if (!fallback) { |
961 | if (open_when_needed) | |
962 | log_close(); | |
877d54e9 | 963 | |
16e4fd87 LP |
964 | return -error; |
965 | } | |
966 | } | |
bf371116 | 967 | } |
877d54e9 | 968 | |
bf371116 | 969 | /* Fallback if journal logging is not available or didn't work. */ |
6357ac66 | 970 | |
bf371116 LP |
971 | va_start(ap, format); |
972 | while (format) { | |
973 | va_list aq; | |
877d54e9 | 974 | |
bf371116 LP |
975 | if (error != 0) |
976 | errno = error; | |
877d54e9 | 977 | |
bf371116 LP |
978 | va_copy(aq, ap); |
979 | vsnprintf(buf, sizeof(buf), format, aq); | |
980 | va_end(aq); | |
963ddb91 | 981 | |
bf371116 LP |
982 | if (startswith(buf, "MESSAGE=")) { |
983 | found = true; | |
984 | break; | |
877d54e9 | 985 | } |
877d54e9 | 986 | |
bf371116 LP |
987 | VA_FORMAT_ADVANCE(format, ap); |
988 | ||
989 | format = va_arg(ap, char *); | |
877d54e9 | 990 | } |
bf371116 | 991 | va_end(ap); |
877d54e9 | 992 | |
16e4fd87 LP |
993 | if (!found) { |
994 | if (open_when_needed) | |
995 | log_close(); | |
996 | ||
bf371116 | 997 | return -error; |
16e4fd87 | 998 | } |
bf371116 | 999 | |
93484b47 | 1000 | return log_dispatch_internal(level, error, file, line, func, NULL, NULL, NULL, NULL, buf + 8); |
877d54e9 LP |
1001 | } |
1002 | ||
915b1d01 LP |
1003 | int log_struct_iovec_internal( |
1004 | int level, | |
1005 | int error, | |
1006 | const char *file, | |
1007 | int line, | |
1008 | const char *func, | |
1009 | const struct iovec input_iovec[], | |
1010 | size_t n_input_iovec) { | |
1011 | ||
1012 | LogRealm realm = LOG_REALM_REMOVE_LEVEL(level); | |
1013 | PROTECT_ERRNO; | |
1014 | size_t i; | |
1015 | char *m; | |
1016 | ||
1017 | if (error < 0) | |
1018 | error = -error; | |
1019 | ||
1020 | if (_likely_(LOG_PRI(level) > log_max_level[realm])) | |
1021 | return -error; | |
1022 | ||
1023 | if (log_target == LOG_TARGET_NULL) | |
1024 | return -error; | |
1025 | ||
1026 | if ((level & LOG_FACMASK) == 0) | |
1027 | level = log_facility | LOG_PRI(level); | |
1028 | ||
1029 | if (IN_SET(log_target, LOG_TARGET_AUTO, | |
1030 | LOG_TARGET_JOURNAL_OR_KMSG, | |
1031 | LOG_TARGET_JOURNAL) && | |
1032 | journal_fd >= 0) { | |
1033 | ||
1034 | struct iovec iovec[1 + n_input_iovec*2]; | |
1035 | char header[LINE_MAX]; | |
1036 | struct msghdr mh = { | |
1037 | .msg_iov = iovec, | |
1038 | .msg_iovlen = 1 + n_input_iovec*2, | |
1039 | }; | |
1040 | ||
1041 | log_do_header(header, sizeof(header), level, error, file, line, func, NULL, NULL, NULL, NULL); | |
1042 | iovec[0] = IOVEC_MAKE_STRING(header); | |
1043 | ||
1044 | for (i = 0; i < n_input_iovec; i++) { | |
1045 | iovec[1+i*2] = input_iovec[i]; | |
1046 | iovec[1+i*2+1] = IOVEC_MAKE_STRING("\n"); | |
1047 | } | |
1048 | ||
1049 | if (sendmsg(journal_fd, &mh, MSG_NOSIGNAL) >= 0) | |
40056777 | 1050 | return -error; |
915b1d01 LP |
1051 | } |
1052 | ||
1053 | for (i = 0; i < n_input_iovec; i++) { | |
fbd0b64f | 1054 | if (input_iovec[i].iov_len < STRLEN("MESSAGE=")) |
915b1d01 LP |
1055 | continue; |
1056 | ||
fbd0b64f | 1057 | if (memcmp(input_iovec[i].iov_base, "MESSAGE=", STRLEN("MESSAGE=")) == 0) |
915b1d01 LP |
1058 | break; |
1059 | } | |
1060 | ||
1061 | if (_unlikely_(i >= n_input_iovec)) /* Couldn't find MESSAGE=? */ | |
1062 | return -error; | |
1063 | ||
fbd0b64f LP |
1064 | m = strndupa(input_iovec[i].iov_base + STRLEN("MESSAGE="), |
1065 | input_iovec[i].iov_len - STRLEN("MESSAGE=")); | |
915b1d01 LP |
1066 | |
1067 | return log_dispatch_internal(level, error, file, line, func, NULL, NULL, NULL, NULL, m); | |
1068 | } | |
1069 | ||
34f0e866 LP |
1070 | int log_set_target_from_string(const char *e) { |
1071 | LogTarget t; | |
1072 | ||
5ba081b0 LP |
1073 | t = log_target_from_string(e); |
1074 | if (t < 0) | |
34f0e866 LP |
1075 | return -EINVAL; |
1076 | ||
1077 | log_set_target(t); | |
1078 | return 0; | |
1079 | } | |
1080 | ||
ff524019 | 1081 | int log_set_max_level_from_string_realm(LogRealm realm, const char *e) { |
34f0e866 LP |
1082 | int t; |
1083 | ||
5ba081b0 LP |
1084 | t = log_level_from_string(e); |
1085 | if (t < 0) | |
737af734 | 1086 | return -EINVAL; |
34f0e866 | 1087 | |
ff524019 | 1088 | log_set_max_level_realm(realm, t); |
34f0e866 LP |
1089 | return 0; |
1090 | } | |
1091 | ||
96287a49 | 1092 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
1de1c9c3 LP |
1093 | |
1094 | /* | |
1095 | * The systemd.log_xyz= settings are parsed by all tools, and | |
1096 | * so is "debug". | |
1097 | * | |
5e07a79e LP |
1098 | * However, "quiet" is only parsed by PID 1, and only turns of |
1099 | * status output to /dev/console, but does not alter the log | |
1100 | * level. | |
1de1c9c3 LP |
1101 | */ |
1102 | ||
1103 | if (streq(key, "debug") && !value) | |
1104 | log_set_max_level(LOG_DEBUG); | |
1105 | ||
1d84ad94 LP |
1106 | else if (proc_cmdline_key_streq(key, "systemd.log_target")) { |
1107 | ||
1108 | if (proc_cmdline_value_missing(key, value)) | |
1109 | return 0; | |
1de1c9c3 LP |
1110 | |
1111 | if (log_set_target_from_string(value) < 0) | |
1112 | log_warning("Failed to parse log target '%s'. Ignoring.", value); | |
1113 | ||
1d84ad94 LP |
1114 | } else if (proc_cmdline_key_streq(key, "systemd.log_level")) { |
1115 | ||
1116 | if (proc_cmdline_value_missing(key, value)) | |
1117 | return 0; | |
1de1c9c3 LP |
1118 | |
1119 | if (log_set_max_level_from_string(value) < 0) | |
1120 | log_warning("Failed to parse log level '%s'. Ignoring.", value); | |
1121 | ||
1d84ad94 | 1122 | } else if (proc_cmdline_key_streq(key, "systemd.log_color")) { |
1de1c9c3 | 1123 | |
1d84ad94 | 1124 | if (log_show_color_from_string(value ?: "1") < 0) |
1de1c9c3 LP |
1125 | log_warning("Failed to parse log color setting '%s'. Ignoring.", value); |
1126 | ||
1d84ad94 | 1127 | } else if (proc_cmdline_key_streq(key, "systemd.log_location")) { |
1de1c9c3 | 1128 | |
1d84ad94 | 1129 | if (log_show_location_from_string(value ?: "1") < 0) |
1de1c9c3 LP |
1130 | log_warning("Failed to parse log location setting '%s'. Ignoring.", value); |
1131 | } | |
1132 | ||
1133 | return 0; | |
1134 | } | |
1135 | ||
ff524019 | 1136 | void log_parse_environment_realm(LogRealm realm) { |
e3e42fc2 ZJS |
1137 | /* Do not call from library code. */ |
1138 | ||
34f0e866 | 1139 | const char *e; |
b8d0ffc2 | 1140 | |
ee46e555 | 1141 | if (get_ctty_devnr(0, NULL) < 0) |
1d84ad94 LP |
1142 | /* Only try to read the command line in daemons. We assume that anything that has a controlling tty is |
1143 | user stuff. */ | |
1144 | (void) proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_STRIP_RD_PREFIX); | |
34f0e866 | 1145 | |
a99e002c | 1146 | e = getenv("SYSTEMD_LOG_TARGET"); |
88fae6e0 | 1147 | if (e && log_set_target_from_string(e) < 0) |
f0ea29ea | 1148 | log_warning("Failed to parse log target '%s'. Ignoring.", e); |
34f0e866 | 1149 | |
a99e002c | 1150 | e = getenv("SYSTEMD_LOG_LEVEL"); |
ff524019 | 1151 | if (e && log_set_max_level_from_string_realm(realm, e) < 0) |
f0ea29ea | 1152 | log_warning("Failed to parse log level '%s'. Ignoring.", e); |
bbe63281 | 1153 | |
a99e002c | 1154 | e = getenv("SYSTEMD_LOG_COLOR"); |
88fae6e0 | 1155 | if (e && log_show_color_from_string(e) < 0) |
f0ea29ea | 1156 | log_warning("Failed to parse bool '%s'. Ignoring.", e); |
bbe63281 | 1157 | |
a99e002c | 1158 | e = getenv("SYSTEMD_LOG_LOCATION"); |
88fae6e0 | 1159 | if (e && log_show_location_from_string(e) < 0) |
f0ea29ea | 1160 | log_warning("Failed to parse bool '%s'. Ignoring.", e); |
34f0e866 LP |
1161 | } |
1162 | ||
1adf1049 LP |
1163 | LogTarget log_get_target(void) { |
1164 | return log_target; | |
1165 | } | |
1166 | ||
ff524019 ZJS |
1167 | int log_get_max_level_realm(LogRealm realm) { |
1168 | return log_max_level[realm]; | |
1adf1049 LP |
1169 | } |
1170 | ||
bbe63281 LP |
1171 | void log_show_color(bool b) { |
1172 | show_color = b; | |
1173 | } | |
1174 | ||
b1e90ec5 ZJS |
1175 | bool log_get_show_color(void) { |
1176 | return show_color; | |
1177 | } | |
1178 | ||
bbe63281 LP |
1179 | void log_show_location(bool b) { |
1180 | show_location = b; | |
1181 | } | |
1182 | ||
b1e90ec5 ZJS |
1183 | bool log_get_show_location(void) { |
1184 | return show_location; | |
1185 | } | |
1186 | ||
bbe63281 LP |
1187 | int log_show_color_from_string(const char *e) { |
1188 | int t; | |
1189 | ||
5ba081b0 LP |
1190 | t = parse_boolean(e); |
1191 | if (t < 0) | |
1192 | return t; | |
bbe63281 LP |
1193 | |
1194 | log_show_color(t); | |
1195 | return 0; | |
1196 | } | |
1197 | ||
1198 | int log_show_location_from_string(const char *e) { | |
1199 | int t; | |
1200 | ||
5ba081b0 LP |
1201 | t = parse_boolean(e); |
1202 | if (t < 0) | |
1203 | return t; | |
bbe63281 LP |
1204 | |
1205 | log_show_location(t); | |
1206 | return 0; | |
1207 | } | |
1208 | ||
81270860 | 1209 | bool log_on_console(void) { |
5b5688af ZJS |
1210 | if (IN_SET(log_target, LOG_TARGET_CONSOLE, |
1211 | LOG_TARGET_CONSOLE_PREFIXED)) | |
81270860 LP |
1212 | return true; |
1213 | ||
1214 | return syslog_fd < 0 && kmsg_fd < 0 && journal_fd < 0; | |
1215 | } | |
1216 | ||
2c5859af | 1217 | static const char *const log_target_table[_LOG_TARGET_MAX] = { |
34f0e866 | 1218 | [LOG_TARGET_CONSOLE] = "console", |
aca83a53 | 1219 | [LOG_TARGET_CONSOLE_PREFIXED] = "console-prefixed", |
34f0e866 | 1220 | [LOG_TARGET_KMSG] = "kmsg", |
5ba081b0 LP |
1221 | [LOG_TARGET_JOURNAL] = "journal", |
1222 | [LOG_TARGET_JOURNAL_OR_KMSG] = "journal-or-kmsg", | |
1223 | [LOG_TARGET_SYSLOG] = "syslog", | |
843d2643 | 1224 | [LOG_TARGET_SYSLOG_OR_KMSG] = "syslog-or-kmsg", |
5ba081b0 | 1225 | [LOG_TARGET_AUTO] = "auto", |
a6903061 | 1226 | [LOG_TARGET_SAFE] = "safe", |
5ba081b0 | 1227 | [LOG_TARGET_NULL] = "null" |
34f0e866 LP |
1228 | }; |
1229 | ||
1230 | DEFINE_STRING_TABLE_LOOKUP(log_target, LogTarget); | |
4daf54a8 ZJS |
1231 | |
1232 | void log_received_signal(int level, const struct signalfd_siginfo *si) { | |
a6ab2365 LP |
1233 | assert(si); |
1234 | ||
1235 | if (pid_is_valid(si->ssi_pid)) { | |
4daf54a8 ZJS |
1236 | _cleanup_free_ char *p = NULL; |
1237 | ||
a6ab2365 | 1238 | (void) get_process_comm(si->ssi_pid, &p); |
4daf54a8 ZJS |
1239 | |
1240 | log_full(level, | |
1fa2f38f | 1241 | "Received SIG%s from PID %"PRIu32" (%s).", |
4daf54a8 ZJS |
1242 | signal_to_string(si->ssi_signo), |
1243 | si->ssi_pid, strna(p)); | |
1244 | } else | |
1245 | log_full(level, | |
1246 | "Received SIG%s.", | |
1247 | signal_to_string(si->ssi_signo)); | |
4daf54a8 | 1248 | } |
c1dc6153 | 1249 | |
158350e8 LP |
1250 | int log_syntax_internal( |
1251 | const char *unit, | |
1252 | int level, | |
1253 | const char *config_file, | |
1254 | unsigned config_line, | |
1255 | int error, | |
1256 | const char *file, | |
1257 | int line, | |
1258 | const char *func, | |
1259 | const char *format, ...) { | |
1260 | ||
1261 | PROTECT_ERRNO; | |
1262 | char buffer[LINE_MAX]; | |
158350e8 | 1263 | va_list ap; |
c2dec702 | 1264 | const char *unit_fmt = NULL; |
158350e8 LP |
1265 | |
1266 | if (error < 0) | |
1267 | error = -error; | |
1268 | ||
ff524019 | 1269 | if (_likely_(LOG_PRI(level) > log_max_level[LOG_REALM_SYSTEMD])) |
158350e8 LP |
1270 | return -error; |
1271 | ||
1272 | if (log_target == LOG_TARGET_NULL) | |
1273 | return -error; | |
1274 | ||
1275 | if (error != 0) | |
1276 | errno = error; | |
1277 | ||
1278 | va_start(ap, format); | |
1279 | vsnprintf(buffer, sizeof(buffer), format, ap); | |
1280 | va_end(ap); | |
1281 | ||
1282 | if (unit) | |
df0ff127 | 1283 | unit_fmt = getpid_cached() == 1 ? "UNIT=%s" : "USER_UNIT=%s"; |
c2dec702 ZJS |
1284 | |
1285 | return log_struct_internal( | |
ff524019 ZJS |
1286 | LOG_REALM_PLUS_LEVEL(LOG_REALM_SYSTEMD, level), |
1287 | error, | |
c2dec702 | 1288 | file, line, func, |
2b044526 | 1289 | "MESSAGE_ID=" SD_MESSAGE_INVALID_CONFIGURATION_STR, |
c2dec702 ZJS |
1290 | "CONFIG_FILE=%s", config_file, |
1291 | "CONFIG_LINE=%u", config_line, | |
e697dfef | 1292 | LOG_MESSAGE("%s:%u: %s", config_file, config_line, buffer), |
c2dec702 ZJS |
1293 | unit_fmt, unit, |
1294 | NULL); | |
158350e8 | 1295 | } |
48a601fe | 1296 | |
d04ce5a9 LP |
1297 | int log_syntax_invalid_utf8_internal( |
1298 | const char *unit, | |
1299 | int level, | |
1300 | const char *config_file, | |
1301 | unsigned config_line, | |
1302 | const char *file, | |
1303 | int line, | |
1304 | const char *func, | |
1305 | const char *rvalue) { | |
1306 | ||
1307 | _cleanup_free_ char *p = NULL; | |
1308 | ||
1309 | if (rvalue) | |
1310 | p = utf8_escape_invalid(rvalue); | |
1311 | ||
1312 | log_syntax_internal(unit, level, config_file, config_line, 0, file, line, func, | |
1313 | "String is not UTF-8 clean, ignoring assignment: %s", strna(p)); | |
1314 | ||
1315 | return -EINVAL; | |
1316 | } | |
1317 | ||
16e4fd87 LP |
1318 | void log_set_upgrade_syslog_to_journal(bool b) { |
1319 | upgrade_syslog_to_journal = b; | |
6fdb8de4 LP |
1320 | |
1321 | /* Make the change effective immediately */ | |
1322 | if (b) { | |
1323 | if (log_target == LOG_TARGET_SYSLOG) | |
1324 | log_target = LOG_TARGET_JOURNAL; | |
1325 | else if (log_target == LOG_TARGET_SYSLOG_OR_KMSG) | |
1326 | log_target = LOG_TARGET_JOURNAL_OR_KMSG; | |
1327 | } | |
16e4fd87 LP |
1328 | } |
1329 | ||
48a601fe LP |
1330 | void log_set_always_reopen_console(bool b) { |
1331 | always_reopen_console = b; | |
1332 | } | |
16e4fd87 LP |
1333 | |
1334 | void log_set_open_when_needed(bool b) { | |
1335 | open_when_needed = b; | |
1336 | } | |
dccca82b | 1337 | |
adf47c91 LP |
1338 | void log_set_prohibit_ipc(bool b) { |
1339 | prohibit_ipc = b; | |
1340 | } | |
1341 | ||
dccca82b LP |
1342 | int log_emergency_level(void) { |
1343 | /* Returns the log level to use for log_emergency() logging. We use LOG_EMERG only when we are PID 1, as only | |
1344 | * then the system of the whole system is obviously affected. */ | |
1345 | ||
1346 | return getpid_cached() == 1 ? LOG_EMERG : LOG_ERR; | |
1347 | } |