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Commit | Line | Data |
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a7334b09 LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2010 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
7 | under the terms of the GNU Lesser General Public License as published by |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
9 | (at your option) any later version. |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 14 | Lesser General Public License for more details. |
a7334b09 | 15 | |
5430f7f2 | 16 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
18 | ***/ | |
19 | ||
c9b97d2a | 20 | #include <errno.h> |
16801e90 | 21 | #include <fcntl.h> |
11c3a366 TA |
22 | #include <inttypes.h> |
23 | #include <limits.h> | |
07630cea LP |
24 | #include <stdarg.h> |
25 | #include <stddef.h> | |
26 | #include <stdio.h> | |
11c3a366 TA |
27 | #include <string.h> |
28 | #include <sys/signalfd.h> | |
16801e90 | 29 | #include <sys/socket.h> |
11c3a366 TA |
30 | #include <sys/time.h> |
31 | #include <sys/uio.h> | |
16801e90 | 32 | #include <sys/un.h> |
11c3a366 | 33 | #include <time.h> |
07630cea | 34 | #include <unistd.h> |
5899f3b7 | 35 | |
158350e8 | 36 | #include "sd-messages.h" |
07630cea | 37 | |
b5efdb8a | 38 | #include "alloc-util.h" |
3ffd4af2 | 39 | #include "fd-util.h" |
f97b34a6 | 40 | #include "format-util.h" |
afc5dbf3 | 41 | #include "io-util.h" |
3ffd4af2 | 42 | #include "log.h" |
07630cea LP |
43 | #include "macro.h" |
44 | #include "missing.h" | |
4e731273 LP |
45 | #include "parse-util.h" |
46 | #include "proc-cmdline.h" | |
0b452006 | 47 | #include "process-util.h" |
24882e06 | 48 | #include "signal-util.h" |
07630cea | 49 | #include "socket-util.h" |
15a5e950 | 50 | #include "stdio-util.h" |
8b43440b | 51 | #include "string-table.h" |
07630cea | 52 | #include "string-util.h" |
7ccbd1ae | 53 | #include "syslog-util.h" |
07630cea | 54 | #include "terminal-util.h" |
93cc7779 | 55 | #include "time-util.h" |
07630cea | 56 | #include "util.h" |
5899f3b7 | 57 | |
bb99a35a LP |
58 | #define SNDBUF_SIZE (8*1024*1024) |
59 | ||
16801e90 | 60 | static LogTarget log_target = LOG_TARGET_CONSOLE; |
ff524019 ZJS |
61 | static int log_max_level[] = {LOG_INFO, LOG_INFO}; |
62 | assert_cc(ELEMENTSOF(log_max_level) == _LOG_REALM_MAX); | |
3eff4208 | 63 | static int log_facility = LOG_DAEMON; |
16801e90 | 64 | |
843d2643 | 65 | static int console_fd = STDERR_FILENO; |
16801e90 LP |
66 | static int syslog_fd = -1; |
67 | static int kmsg_fd = -1; | |
5ba081b0 | 68 | static int journal_fd = -1; |
16801e90 | 69 | |
c31e1495 LP |
70 | static bool syslog_is_stream = false; |
71 | ||
bbe63281 LP |
72 | static bool show_color = false; |
73 | static bool show_location = false; | |
74 | ||
c1dc6153 | 75 | static bool upgrade_syslog_to_journal = false; |
48a601fe | 76 | static bool always_reopen_console = false; |
c1dc6153 | 77 | |
35b8ca3a | 78 | /* Akin to glibc's __abort_msg; which is private and we hence cannot |
185986c6 LP |
79 | * use here. */ |
80 | static char *log_abort_msg = NULL; | |
81 | ||
843d2643 LP |
82 | void log_close_console(void) { |
83 | ||
84 | if (console_fd < 0) | |
85 | return; | |
16801e90 | 86 | |
c8513d54 LP |
87 | if (getpid() == 1) { |
88 | if (console_fd >= 3) | |
03e334a1 | 89 | safe_close(console_fd); |
c8513d54 | 90 | |
843d2643 | 91 | console_fd = -1; |
16801e90 LP |
92 | } |
93 | } | |
94 | ||
843d2643 | 95 | static int log_open_console(void) { |
16801e90 | 96 | |
843d2643 | 97 | if (console_fd >= 0) |
16801e90 | 98 | return 0; |
843d2643 | 99 | |
48a601fe | 100 | if (always_reopen_console) { |
5ba081b0 | 101 | console_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC); |
cd15c418 | 102 | if (console_fd < 0) |
843d2643 | 103 | return console_fd; |
843d2643 LP |
104 | } else |
105 | console_fd = STDERR_FILENO; | |
106 | ||
107 | return 0; | |
108 | } | |
109 | ||
110 | void log_close_kmsg(void) { | |
03e334a1 | 111 | kmsg_fd = safe_close(kmsg_fd); |
843d2643 LP |
112 | } |
113 | ||
114 | static int log_open_kmsg(void) { | |
16801e90 LP |
115 | |
116 | if (kmsg_fd >= 0) | |
117 | return 0; | |
118 | ||
674f8283 | 119 | kmsg_fd = open("/dev/kmsg", O_WRONLY|O_NOCTTY|O_CLOEXEC); |
cd15c418 | 120 | if (kmsg_fd < 0) |
16801e90 | 121 | return -errno; |
0dae83f9 | 122 | |
16801e90 LP |
123 | return 0; |
124 | } | |
125 | ||
126 | void log_close_syslog(void) { | |
03e334a1 | 127 | syslog_fd = safe_close(syslog_fd); |
16801e90 LP |
128 | } |
129 | ||
c31e1495 | 130 | static int create_log_socket(int type) { |
8b18fdc1 | 131 | struct timeval tv; |
95066a90 | 132 | int fd; |
c31e1495 | 133 | |
8b18fdc1 | 134 | fd = socket(AF_UNIX, type|SOCK_CLOEXEC, 0); |
5ba081b0 | 135 | if (fd < 0) |
c31e1495 LP |
136 | return -errno; |
137 | ||
0474ef7b | 138 | (void) fd_inc_sndbuf(fd, SNDBUF_SIZE); |
bb99a35a | 139 | |
8b18fdc1 LP |
140 | /* We need a blocking fd here since we'd otherwise lose |
141 | messages way too early. However, let's not hang forever in the | |
142 | unlikely case of a deadlock. */ | |
4d89874a ZJS |
143 | if (getpid() == 1) |
144 | timeval_store(&tv, 10 * USEC_PER_MSEC); | |
145 | else | |
146 | timeval_store(&tv, 10 * USEC_PER_SEC); | |
086891e5 | 147 | (void) setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)); |
8b18fdc1 | 148 | |
c31e1495 LP |
149 | return fd; |
150 | } | |
151 | ||
843d2643 | 152 | static int log_open_syslog(void) { |
95066a90 LP |
153 | |
154 | static const union sockaddr_union sa = { | |
b92bea5d ZJS |
155 | .un.sun_family = AF_UNIX, |
156 | .un.sun_path = "/dev/log", | |
157 | }; | |
16801e90 | 158 | |
95066a90 LP |
159 | int r; |
160 | ||
16801e90 LP |
161 | if (syslog_fd >= 0) |
162 | return 0; | |
163 | ||
5ba081b0 LP |
164 | syslog_fd = create_log_socket(SOCK_DGRAM); |
165 | if (syslog_fd < 0) { | |
166 | r = syslog_fd; | |
843d2643 | 167 | goto fail; |
16801e90 LP |
168 | } |
169 | ||
fc2fffe7 | 170 | if (connect(syslog_fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
03e334a1 | 171 | safe_close(syslog_fd); |
c31e1495 LP |
172 | |
173 | /* Some legacy syslog systems still use stream | |
174 | * sockets. They really shouldn't. But what can we | |
175 | * do... */ | |
5ba081b0 LP |
176 | syslog_fd = create_log_socket(SOCK_STREAM); |
177 | if (syslog_fd < 0) { | |
178 | r = syslog_fd; | |
c31e1495 LP |
179 | goto fail; |
180 | } | |
181 | ||
fc2fffe7 | 182 | if (connect(syslog_fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
c31e1495 LP |
183 | r = -errno; |
184 | goto fail; | |
185 | } | |
186 | ||
187 | syslog_is_stream = true; | |
188 | } else | |
189 | syslog_is_stream = false; | |
190 | ||
16801e90 | 191 | return 0; |
843d2643 LP |
192 | |
193 | fail: | |
194 | log_close_syslog(); | |
843d2643 LP |
195 | return r; |
196 | } | |
197 | ||
5ba081b0 | 198 | void log_close_journal(void) { |
03e334a1 | 199 | journal_fd = safe_close(journal_fd); |
5ba081b0 LP |
200 | } |
201 | ||
202 | static int log_open_journal(void) { | |
95066a90 LP |
203 | |
204 | static const union sockaddr_union sa = { | |
b92bea5d ZJS |
205 | .un.sun_family = AF_UNIX, |
206 | .un.sun_path = "/run/systemd/journal/socket", | |
207 | }; | |
95066a90 | 208 | |
5ba081b0 LP |
209 | int r; |
210 | ||
211 | if (journal_fd >= 0) | |
212 | return 0; | |
213 | ||
214 | journal_fd = create_log_socket(SOCK_DGRAM); | |
215 | if (journal_fd < 0) { | |
216 | r = journal_fd; | |
217 | goto fail; | |
218 | } | |
219 | ||
fc2fffe7 | 220 | if (connect(journal_fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
5ba081b0 LP |
221 | r = -errno; |
222 | goto fail; | |
223 | } | |
224 | ||
5ba081b0 LP |
225 | return 0; |
226 | ||
227 | fail: | |
228 | log_close_journal(); | |
5ba081b0 LP |
229 | return r; |
230 | } | |
231 | ||
843d2643 LP |
232 | int log_open(void) { |
233 | int r; | |
234 | ||
235 | /* If we don't use the console we close it here, to not get | |
236 | * killed by SAK. If we don't use syslog we close it here so | |
237 | * that we are not confused by somebody deleting the socket in | |
238 | * the fs. If we don't use /dev/kmsg we still keep it open, | |
239 | * because there is no reason to close it. */ | |
240 | ||
9fae33d2 | 241 | if (log_target == LOG_TARGET_NULL) { |
5ba081b0 | 242 | log_close_journal(); |
9fae33d2 LP |
243 | log_close_syslog(); |
244 | log_close_console(); | |
245 | return 0; | |
246 | } | |
247 | ||
5b5688af | 248 | if (!IN_SET(log_target, LOG_TARGET_AUTO, LOG_TARGET_SAFE) || |
bb7df0da | 249 | getpid() == 1 || |
f41c094c | 250 | isatty(STDERR_FILENO) <= 0) { |
bb7df0da | 251 | |
5b5688af ZJS |
252 | if (IN_SET(log_target, LOG_TARGET_AUTO, |
253 | LOG_TARGET_JOURNAL_OR_KMSG, | |
254 | LOG_TARGET_JOURNAL)) { | |
5ba081b0 LP |
255 | r = log_open_journal(); |
256 | if (r >= 0) { | |
257 | log_close_syslog(); | |
bb7df0da LP |
258 | log_close_console(); |
259 | return r; | |
260 | } | |
5ba081b0 LP |
261 | } |
262 | ||
5b5688af ZJS |
263 | if (IN_SET(log_target, LOG_TARGET_SYSLOG_OR_KMSG, |
264 | LOG_TARGET_SYSLOG)) { | |
5ba081b0 LP |
265 | r = log_open_syslog(); |
266 | if (r >= 0) { | |
267 | log_close_journal(); | |
268 | log_close_console(); | |
269 | return r; | |
270 | } | |
271 | } | |
272 | ||
5b5688af ZJS |
273 | if (IN_SET(log_target, LOG_TARGET_AUTO, |
274 | LOG_TARGET_SAFE, | |
275 | LOG_TARGET_JOURNAL_OR_KMSG, | |
276 | LOG_TARGET_SYSLOG_OR_KMSG, | |
277 | LOG_TARGET_KMSG)) { | |
5ba081b0 LP |
278 | r = log_open_kmsg(); |
279 | if (r >= 0) { | |
280 | log_close_journal(); | |
bb7df0da LP |
281 | log_close_syslog(); |
282 | log_close_console(); | |
283 | return r; | |
284 | } | |
5ba081b0 | 285 | } |
bb7df0da | 286 | } |
843d2643 | 287 | |
5ba081b0 | 288 | log_close_journal(); |
843d2643 | 289 | log_close_syslog(); |
dcdf86bb | 290 | |
843d2643 | 291 | return log_open_console(); |
16801e90 LP |
292 | } |
293 | ||
294 | void log_set_target(LogTarget target) { | |
295 | assert(target >= 0); | |
296 | assert(target < _LOG_TARGET_MAX); | |
297 | ||
c1dc6153 LP |
298 | if (upgrade_syslog_to_journal) { |
299 | if (target == LOG_TARGET_SYSLOG) | |
300 | target = LOG_TARGET_JOURNAL; | |
301 | else if (target == LOG_TARGET_SYSLOG_OR_KMSG) | |
302 | target = LOG_TARGET_JOURNAL_OR_KMSG; | |
303 | } | |
304 | ||
16801e90 LP |
305 | log_target = target; |
306 | } | |
307 | ||
871e5809 | 308 | void log_close(void) { |
5ba081b0 | 309 | log_close_journal(); |
871e5809 | 310 | log_close_syslog(); |
5ba081b0 LP |
311 | log_close_kmsg(); |
312 | log_close_console(); | |
871e5809 LP |
313 | } |
314 | ||
4d8a7798 | 315 | void log_forget_fds(void) { |
5ba081b0 | 316 | console_fd = kmsg_fd = syslog_fd = journal_fd = -1; |
4d8a7798 MS |
317 | } |
318 | ||
ff524019 | 319 | void log_set_max_level_realm(LogRealm realm, int level) { |
16801e90 | 320 | assert((level & LOG_PRIMASK) == level); |
ff524019 | 321 | assert(realm < ELEMENTSOF(log_max_level)); |
16801e90 | 322 | |
ff524019 | 323 | log_max_level[realm] = level; |
16801e90 LP |
324 | } |
325 | ||
3eff4208 LP |
326 | void log_set_facility(int facility) { |
327 | log_facility = facility; | |
328 | } | |
329 | ||
843d2643 | 330 | static int write_to_console( |
20c03b7b | 331 | int level, |
086891e5 | 332 | int error, |
95066a90 | 333 | const char *file, |
20c03b7b LP |
334 | int line, |
335 | const char *func, | |
336 | const char *buffer) { | |
5899f3b7 | 337 | |
79c95440 | 338 | char location[256], prefix[1 + DECIMAL_STR_MAX(int) + 2]; |
aca83a53 | 339 | struct iovec iovec[6] = {}; |
843d2643 LP |
340 | unsigned n = 0; |
341 | bool highlight; | |
5899f3b7 | 342 | |
843d2643 LP |
343 | if (console_fd < 0) |
344 | return 0; | |
345 | ||
aca83a53 | 346 | if (log_target == LOG_TARGET_CONSOLE_PREFIXED) { |
0474ef7b | 347 | xsprintf(prefix, "<%i>", level); |
aca83a53 LP |
348 | IOVEC_SET_STRING(iovec[n++], prefix); |
349 | } | |
350 | ||
bbe63281 | 351 | highlight = LOG_PRI(level) <= LOG_ERR && show_color; |
843d2643 | 352 | |
674f8283 | 353 | if (show_location) { |
79c95440 | 354 | snprintf(location, sizeof(location), "(%s:%i) ", file, line); |
bbe63281 | 355 | IOVEC_SET_STRING(iovec[n++], location); |
674f8283 LP |
356 | } |
357 | ||
843d2643 | 358 | if (highlight) |
1fc464f6 | 359 | IOVEC_SET_STRING(iovec[n++], ANSI_HIGHLIGHT_RED); |
843d2643 LP |
360 | IOVEC_SET_STRING(iovec[n++], buffer); |
361 | if (highlight) | |
1fc464f6 | 362 | IOVEC_SET_STRING(iovec[n++], ANSI_NORMAL); |
843d2643 LP |
363 | IOVEC_SET_STRING(iovec[n++], "\n"); |
364 | ||
0e6eaa2d LP |
365 | if (writev(console_fd, iovec, n) < 0) { |
366 | ||
367 | if (errno == EIO && getpid() == 1) { | |
368 | ||
369 | /* If somebody tried to kick us from our | |
370 | * console tty (via vhangup() or suchlike), | |
371 | * try to reconnect */ | |
372 | ||
373 | log_close_console(); | |
374 | log_open_console(); | |
375 | ||
376 | if (console_fd < 0) | |
377 | return 0; | |
378 | ||
379 | if (writev(console_fd, iovec, n) < 0) | |
380 | return -errno; | |
381 | } else | |
382 | return -errno; | |
383 | } | |
5899f3b7 | 384 | |
843d2643 | 385 | return 1; |
16801e90 | 386 | } |
5899f3b7 | 387 | |
16801e90 | 388 | static int write_to_syslog( |
086891e5 LP |
389 | int level, |
390 | int error, | |
95066a90 | 391 | const char *file, |
086891e5 LP |
392 | int line, |
393 | const char *func, | |
086891e5 | 394 | const char *buffer) { |
16801e90 | 395 | |
5ffa8c81 ZJS |
396 | char header_priority[2 + DECIMAL_STR_MAX(int) + 1], |
397 | header_time[64], | |
398 | header_pid[4 + DECIMAL_STR_MAX(pid_t) + 1]; | |
b92bea5d ZJS |
399 | struct iovec iovec[5] = {}; |
400 | struct msghdr msghdr = { | |
401 | .msg_iov = iovec, | |
402 | .msg_iovlen = ELEMENTSOF(iovec), | |
403 | }; | |
16801e90 LP |
404 | time_t t; |
405 | struct tm *tm; | |
406 | ||
407 | if (syslog_fd < 0) | |
843d2643 | 408 | return 0; |
16801e90 | 409 | |
5ffa8c81 | 410 | xsprintf(header_priority, "<%i>", level); |
16801e90 LP |
411 | |
412 | t = (time_t) (now(CLOCK_REALTIME) / USEC_PER_SEC); | |
fdf9f9bb ZJS |
413 | tm = localtime(&t); |
414 | if (!tm) | |
16801e90 LP |
415 | return -EINVAL; |
416 | ||
417 | if (strftime(header_time, sizeof(header_time), "%h %e %T ", tm) <= 0) | |
418 | return -EINVAL; | |
419 | ||
5ffa8c81 | 420 | xsprintf(header_pid, "["PID_FMT"]: ", getpid()); |
16801e90 | 421 | |
16801e90 LP |
422 | IOVEC_SET_STRING(iovec[0], header_priority); |
423 | IOVEC_SET_STRING(iovec[1], header_time); | |
5b6319dc | 424 | IOVEC_SET_STRING(iovec[2], program_invocation_short_name); |
16801e90 LP |
425 | IOVEC_SET_STRING(iovec[3], header_pid); |
426 | IOVEC_SET_STRING(iovec[4], buffer); | |
427 | ||
c899f8c6 | 428 | /* When using syslog via SOCK_STREAM separate the messages by NUL chars */ |
c31e1495 LP |
429 | if (syslog_is_stream) |
430 | iovec[4].iov_len++; | |
431 | ||
c31e1495 LP |
432 | for (;;) { |
433 | ssize_t n; | |
434 | ||
8f7f7a1b MS |
435 | n = sendmsg(syslog_fd, &msghdr, MSG_NOSIGNAL); |
436 | if (n < 0) | |
c31e1495 LP |
437 | return -errno; |
438 | ||
439 | if (!syslog_is_stream || | |
440 | (size_t) n >= IOVEC_TOTAL_SIZE(iovec, ELEMENTSOF(iovec))) | |
441 | break; | |
442 | ||
443 | IOVEC_INCREMENT(iovec, ELEMENTSOF(iovec), n); | |
444 | } | |
16801e90 | 445 | |
843d2643 | 446 | return 1; |
16801e90 LP |
447 | } |
448 | ||
449 | static int write_to_kmsg( | |
086891e5 LP |
450 | int level, |
451 | int error, | |
bcf5c276 | 452 | const char *file, |
086891e5 LP |
453 | int line, |
454 | const char *func, | |
086891e5 | 455 | const char *buffer) { |
16801e90 | 456 | |
5ffa8c81 ZJS |
457 | char header_priority[2 + DECIMAL_STR_MAX(int) + 1], |
458 | header_pid[4 + DECIMAL_STR_MAX(pid_t) + 1]; | |
b92bea5d | 459 | struct iovec iovec[5] = {}; |
16801e90 LP |
460 | |
461 | if (kmsg_fd < 0) | |
843d2643 | 462 | return 0; |
16801e90 | 463 | |
5ffa8c81 ZJS |
464 | xsprintf(header_priority, "<%i>", level); |
465 | xsprintf(header_pid, "["PID_FMT"]: ", getpid()); | |
16801e90 | 466 | |
16801e90 | 467 | IOVEC_SET_STRING(iovec[0], header_priority); |
5b6319dc | 468 | IOVEC_SET_STRING(iovec[1], program_invocation_short_name); |
16801e90 LP |
469 | IOVEC_SET_STRING(iovec[2], header_pid); |
470 | IOVEC_SET_STRING(iovec[3], buffer); | |
843d2643 | 471 | IOVEC_SET_STRING(iovec[4], "\n"); |
16801e90 LP |
472 | |
473 | if (writev(kmsg_fd, iovec, ELEMENTSOF(iovec)) < 0) | |
474 | return -errno; | |
475 | ||
843d2643 | 476 | return 1; |
16801e90 LP |
477 | } |
478 | ||
086891e5 LP |
479 | static int log_do_header( |
480 | char *header, | |
481 | size_t size, | |
482 | int level, | |
483 | int error, | |
484 | const char *file, int line, const char *func, | |
4b58153d LP |
485 | const char *object_field, const char *object, |
486 | const char *extra_field, const char *extra) { | |
086891e5 | 487 | |
41a79f10 | 488 | snprintf(header, size, |
5ba081b0 | 489 | "PRIORITY=%i\n" |
3eff4208 | 490 | "SYSLOG_FACILITY=%i\n" |
086891e5 | 491 | "%s%s%s" |
e429981b | 492 | "%s%.*i%s" |
086891e5 LP |
493 | "%s%s%s" |
494 | "%s%.*i%s" | |
495 | "%s%s%s" | |
4b58153d | 496 | "%s%s%s" |
41a79f10 | 497 | "SYSLOG_IDENTIFIER=%s\n", |
5ba081b0 | 498 | LOG_PRI(level), |
3eff4208 | 499 | LOG_FAC(level), |
086891e5 LP |
500 | isempty(file) ? "" : "CODE_FILE=", |
501 | isempty(file) ? "" : file, | |
502 | isempty(file) ? "" : "\n", | |
e429981b ZJS |
503 | line ? "CODE_LINE=" : "", |
504 | line ? 1 : 0, line, /* %.0d means no output too, special case for 0 */ | |
505 | line ? "\n" : "", | |
b457b33d | 506 | isempty(func) ? "" : "CODE_FUNC=", |
086891e5 LP |
507 | isempty(func) ? "" : func, |
508 | isempty(func) ? "" : "\n", | |
509 | error ? "ERRNO=" : "", | |
510 | error ? 1 : 0, error, | |
511 | error ? "\n" : "", | |
512 | isempty(object) ? "" : object_field, | |
513 | isempty(object) ? "" : object, | |
514 | isempty(object) ? "" : "\n", | |
4b58153d LP |
515 | isempty(extra) ? "" : extra_field, |
516 | isempty(extra) ? "" : extra, | |
517 | isempty(extra) ? "" : "\n", | |
d29b05a4 | 518 | program_invocation_short_name); |
086891e5 | 519 | |
41a79f10 ZJS |
520 | return 0; |
521 | } | |
5ba081b0 | 522 | |
41a79f10 | 523 | static int write_to_journal( |
086891e5 LP |
524 | int level, |
525 | int error, | |
bcf5c276 | 526 | const char *file, |
086891e5 LP |
527 | int line, |
528 | const char *func, | |
529 | const char *object_field, | |
530 | const char *object, | |
4b58153d LP |
531 | const char *extra_field, |
532 | const char *extra, | |
086891e5 | 533 | const char *buffer) { |
41a79f10 ZJS |
534 | |
535 | char header[LINE_MAX]; | |
b92bea5d ZJS |
536 | struct iovec iovec[4] = {}; |
537 | struct msghdr mh = {}; | |
41a79f10 ZJS |
538 | |
539 | if (journal_fd < 0) | |
540 | return 0; | |
541 | ||
4b58153d | 542 | log_do_header(header, sizeof(header), level, error, file, line, func, object_field, object, extra_field, extra); |
5ba081b0 | 543 | |
5ba081b0 | 544 | IOVEC_SET_STRING(iovec[0], header); |
41a79f10 ZJS |
545 | IOVEC_SET_STRING(iovec[1], "MESSAGE="); |
546 | IOVEC_SET_STRING(iovec[2], buffer); | |
547 | IOVEC_SET_STRING(iovec[3], "\n"); | |
5ba081b0 | 548 | |
5ba081b0 LP |
549 | mh.msg_iov = iovec; |
550 | mh.msg_iovlen = ELEMENTSOF(iovec); | |
551 | ||
552 | if (sendmsg(journal_fd, &mh, MSG_NOSIGNAL) < 0) | |
553 | return -errno; | |
554 | ||
555 | return 1; | |
556 | } | |
557 | ||
93484b47 | 558 | int log_dispatch_internal( |
086891e5 LP |
559 | int level, |
560 | int error, | |
95066a90 | 561 | const char *file, |
086891e5 LP |
562 | int line, |
563 | const char *func, | |
564 | const char *object_field, | |
565 | const char *object, | |
4b58153d LP |
566 | const char *extra, |
567 | const char *extra_field, | |
086891e5 | 568 | char *buffer) { |
843d2643 | 569 | |
bf371116 | 570 | assert(buffer); |
843d2643 | 571 | |
0474ef7b LP |
572 | if (error < 0) |
573 | error = -error; | |
574 | ||
9fae33d2 | 575 | if (log_target == LOG_TARGET_NULL) |
bf371116 | 576 | return -error; |
9fae33d2 | 577 | |
29db5834 | 578 | /* Patch in LOG_DAEMON facility if necessary */ |
7d76f312 | 579 | if ((level & LOG_FACMASK) == 0) |
3eff4208 | 580 | level = log_facility | LOG_PRI(level); |
29db5834 | 581 | |
9726b29e LP |
582 | do { |
583 | char *e; | |
9499b235 | 584 | int k = 0; |
843d2643 | 585 | |
9726b29e | 586 | buffer += strspn(buffer, NEWLINE); |
843d2643 | 587 | |
9726b29e LP |
588 | if (buffer[0] == 0) |
589 | break; | |
843d2643 | 590 | |
9726b29e LP |
591 | if ((e = strpbrk(buffer, NEWLINE))) |
592 | *(e++) = 0; | |
843d2643 | 593 | |
5b5688af ZJS |
594 | if (IN_SET(log_target, LOG_TARGET_AUTO, |
595 | LOG_TARGET_JOURNAL_OR_KMSG, | |
596 | LOG_TARGET_JOURNAL)) { | |
5ba081b0 | 597 | |
4b58153d | 598 | k = write_to_journal(level, error, file, line, func, object_field, object, extra_field, extra, buffer); |
4e7bc3f3 LP |
599 | if (k < 0) { |
600 | if (k != -EAGAIN) | |
5ba081b0 LP |
601 | log_close_journal(); |
602 | log_open_kmsg(); | |
bf371116 | 603 | } |
5ba081b0 LP |
604 | } |
605 | ||
5b5688af ZJS |
606 | if (IN_SET(log_target, LOG_TARGET_SYSLOG_OR_KMSG, |
607 | LOG_TARGET_SYSLOG)) { | |
9726b29e | 608 | |
4b58153d | 609 | k = write_to_syslog(level, error, file, line, func, buffer); |
4e7bc3f3 LP |
610 | if (k < 0) { |
611 | if (k != -EAGAIN) | |
8f7f7a1b | 612 | log_close_syslog(); |
9726b29e | 613 | log_open_kmsg(); |
bf371116 | 614 | } |
9726b29e LP |
615 | } |
616 | ||
9499b235 | 617 | if (k <= 0 && |
5b5688af ZJS |
618 | IN_SET(log_target, LOG_TARGET_AUTO, |
619 | LOG_TARGET_SAFE, | |
620 | LOG_TARGET_SYSLOG_OR_KMSG, | |
621 | LOG_TARGET_JOURNAL_OR_KMSG, | |
622 | LOG_TARGET_KMSG)) { | |
9726b29e | 623 | |
4b58153d | 624 | k = write_to_kmsg(level, error, file, line, func, buffer); |
4e7bc3f3 LP |
625 | if (k < 0) { |
626 | log_close_kmsg(); | |
9726b29e | 627 | log_open_console(); |
bf371116 | 628 | } |
9726b29e LP |
629 | } |
630 | ||
bf371116 | 631 | if (k <= 0) |
4b58153d | 632 | (void) write_to_console(level, error, file, line, func, buffer); |
9726b29e LP |
633 | |
634 | buffer = e; | |
635 | } while (buffer); | |
636 | ||
bf371116 | 637 | return -error; |
843d2643 LP |
638 | } |
639 | ||
2149e37c | 640 | int log_dump_internal( |
ff524019 ZJS |
641 | int level, |
642 | int error, | |
643 | const char *file, | |
644 | int line, | |
645 | const char *func, | |
646 | char *buffer) { | |
2149e37c | 647 | |
ff524019 | 648 | LogRealm realm = LOG_REALM_REMOVE_LEVEL(level); |
5c0aa72a | 649 | PROTECT_ERRNO; |
2149e37c LP |
650 | |
651 | /* This modifies the buffer... */ | |
652 | ||
bf371116 LP |
653 | if (error < 0) |
654 | error = -error; | |
655 | ||
ff524019 | 656 | if (_likely_(LOG_PRI(level) > log_max_level[realm])) |
bf371116 | 657 | return -error; |
2149e37c | 658 | |
93484b47 | 659 | return log_dispatch_internal(level, error, file, line, func, NULL, NULL, NULL, NULL, buffer); |
2149e37c LP |
660 | } |
661 | ||
ff524019 | 662 | int log_internalv_realm( |
086891e5 LP |
663 | int level, |
664 | int error, | |
bcf5c276 | 665 | const char *file, |
086891e5 LP |
666 | int line, |
667 | const char *func, | |
668 | const char *format, | |
669 | va_list ap) { | |
16801e90 | 670 | |
ff524019 | 671 | LogRealm realm = LOG_REALM_REMOVE_LEVEL(level); |
addab137 | 672 | char buffer[LINE_MAX]; |
ff524019 | 673 | PROTECT_ERRNO; |
16801e90 | 674 | |
bf371116 LP |
675 | if (error < 0) |
676 | error = -error; | |
677 | ||
ff524019 | 678 | if (_likely_(LOG_PRI(level) > log_max_level[realm])) |
bf371116 | 679 | return -error; |
16801e90 | 680 | |
086891e5 LP |
681 | /* Make sure that %m maps to the specified error */ |
682 | if (error != 0) | |
bf371116 | 683 | errno = error; |
086891e5 | 684 | |
843d2643 | 685 | vsnprintf(buffer, sizeof(buffer), format, ap); |
843d2643 | 686 | |
93484b47 | 687 | return log_dispatch_internal(level, error, file, line, func, NULL, NULL, NULL, NULL, buffer); |
185986c6 | 688 | } |
16801e90 | 689 | |
ff524019 | 690 | int log_internal_realm( |
086891e5 LP |
691 | int level, |
692 | int error, | |
bcf5c276 | 693 | const char *file, |
086891e5 LP |
694 | int line, |
695 | const char *func, | |
696 | const char *format, ...) { | |
17a94911 | 697 | |
17a94911 | 698 | va_list ap; |
bf371116 | 699 | int r; |
17a94911 LP |
700 | |
701 | va_start(ap, format); | |
ff524019 | 702 | r = log_internalv_realm(level, error, file, line, func, format, ap); |
17a94911 LP |
703 | va_end(ap); |
704 | ||
705 | return r; | |
706 | } | |
707 | ||
79008bdd | 708 | int log_object_internalv( |
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 *object_field, | |
715 | const char *object, | |
4b58153d LP |
716 | const char *extra_field, |
717 | const char *extra, | |
086891e5 LP |
718 | const char *format, |
719 | va_list ap) { | |
fdf9f9bb | 720 | |
5c0aa72a | 721 | PROTECT_ERRNO; |
f2341e0a | 722 | char *buffer, *b; |
fdf9f9bb | 723 | |
bf371116 LP |
724 | if (error < 0) |
725 | error = -error; | |
726 | ||
ff524019 | 727 | if (_likely_(LOG_PRI(level) > log_max_level[LOG_REALM_SYSTEMD])) |
bf371116 | 728 | return -error; |
fdf9f9bb | 729 | |
086891e5 LP |
730 | /* Make sure that %m maps to the specified error */ |
731 | if (error != 0) | |
bf371116 | 732 | errno = error; |
086891e5 | 733 | |
f2341e0a LP |
734 | /* Prepend the object name before the message */ |
735 | if (object) { | |
736 | size_t n; | |
737 | ||
738 | n = strlen(object); | |
1741b25c | 739 | buffer = newa(char, n + 2 + LINE_MAX); |
f2341e0a | 740 | b = stpcpy(stpcpy(buffer, object), ": "); |
1741b25c EV |
741 | } else |
742 | b = buffer = newa(char, LINE_MAX); | |
f2341e0a | 743 | |
1741b25c | 744 | vsnprintf(b, LINE_MAX, format, ap); |
fdf9f9bb | 745 | |
93484b47 ZJS |
746 | return log_dispatch_internal(level, error, file, line, func, |
747 | object_field, object, extra_field, extra, buffer); | |
fdf9f9bb ZJS |
748 | } |
749 | ||
79008bdd | 750 | int log_object_internal( |
086891e5 LP |
751 | int level, |
752 | int error, | |
bcf5c276 | 753 | const char *file, |
086891e5 LP |
754 | int line, |
755 | const char *func, | |
756 | const char *object_field, | |
757 | const char *object, | |
4b58153d LP |
758 | const char *extra_field, |
759 | const char *extra, | |
086891e5 | 760 | const char *format, ...) { |
fdf9f9bb | 761 | |
fdf9f9bb | 762 | va_list ap; |
bf371116 | 763 | int r; |
fdf9f9bb ZJS |
764 | |
765 | va_start(ap, format); | |
4b58153d | 766 | r = log_object_internalv(level, error, file, line, func, object_field, object, extra_field, extra, format, ap); |
fdf9f9bb ZJS |
767 | va_end(ap); |
768 | ||
769 | return r; | |
770 | } | |
771 | ||
086891e5 LP |
772 | static void log_assert( |
773 | int level, | |
774 | const char *text, | |
775 | const char *file, | |
776 | int line, | |
777 | const char *func, | |
778 | const char *format) { | |
779 | ||
addab137 | 780 | static char buffer[LINE_MAX]; |
ff524019 | 781 | LogRealm realm = LOG_REALM_REMOVE_LEVEL(level); |
185986c6 | 782 | |
ff524019 | 783 | if (_likely_(LOG_PRI(level) > log_max_level[realm])) |
50f72bca ZJS |
784 | return; |
785 | ||
bcfce235 | 786 | DISABLE_WARNING_FORMAT_NONLITERAL; |
e68eedbb | 787 | snprintf(buffer, sizeof buffer, format, text, file, line, func); |
bcfce235 | 788 | REENABLE_WARNING; |
185986c6 | 789 | |
185986c6 LP |
790 | log_abort_msg = buffer; |
791 | ||
93484b47 | 792 | log_dispatch_internal(level, 0, file, line, func, NULL, NULL, NULL, NULL, buffer); |
5899f3b7 | 793 | } |
34f0e866 | 794 | |
ff524019 ZJS |
795 | noreturn void log_assert_failed_realm( |
796 | LogRealm realm, | |
797 | const char *text, | |
798 | const char *file, | |
799 | int line, | |
800 | const char *func) { | |
801 | log_assert(LOG_REALM_PLUS_LEVEL(realm, LOG_CRIT), text, file, line, func, | |
802 | "Assertion '%s' failed at %s:%u, function %s(). Aborting."); | |
80514f9c | 803 | abort(); |
b7f33638 MS |
804 | } |
805 | ||
ff524019 ZJS |
806 | noreturn void log_assert_failed_unreachable_realm( |
807 | LogRealm realm, | |
808 | const char *text, | |
809 | const char *file, | |
810 | int line, | |
811 | const char *func) { | |
812 | log_assert(LOG_REALM_PLUS_LEVEL(realm, LOG_CRIT), text, file, line, func, | |
813 | "Code should not be reached '%s' at %s:%u, function %s(). Aborting."); | |
80514f9c LP |
814 | abort(); |
815 | } | |
816 | ||
ff524019 ZJS |
817 | void log_assert_failed_return_realm( |
818 | LogRealm realm, | |
819 | const char *text, | |
820 | const char *file, | |
821 | int line, | |
822 | const char *func) { | |
e5ca092c | 823 | PROTECT_ERRNO; |
ff524019 ZJS |
824 | log_assert(LOG_REALM_PLUS_LEVEL(realm, LOG_DEBUG), text, file, line, func, |
825 | "Assertion '%s' failed at %s:%u, function %s(). Ignoring."); | |
b7f33638 MS |
826 | } |
827 | ||
ff524019 ZJS |
828 | int log_oom_internal(LogRealm realm, const char *file, int line, const char *func) { |
829 | log_internal_realm(LOG_REALM_PLUS_LEVEL(realm, LOG_ERR), | |
830 | ENOMEM, file, line, func, "Out of memory."); | |
6dc1e7e0 MS |
831 | return -ENOMEM; |
832 | } | |
833 | ||
8a03c9ef ZJS |
834 | int log_format_iovec( |
835 | struct iovec *iovec, | |
836 | unsigned iovec_len, | |
837 | unsigned *n, | |
838 | bool newline_separator, | |
839 | int error, | |
840 | const char *format, | |
841 | va_list ap) { | |
842 | ||
843 | static const char nl = '\n'; | |
844 | ||
845 | while (format && *n + 1 < iovec_len) { | |
846 | va_list aq; | |
847 | char *m; | |
848 | int r; | |
849 | ||
850 | /* We need to copy the va_list structure, | |
851 | * since vasprintf() leaves it afterwards at | |
852 | * an undefined location */ | |
853 | ||
854 | if (error != 0) | |
855 | errno = error; | |
856 | ||
857 | va_copy(aq, ap); | |
858 | r = vasprintf(&m, format, aq); | |
859 | va_end(aq); | |
860 | if (r < 0) | |
861 | return -EINVAL; | |
862 | ||
863 | /* Now, jump enough ahead, so that we point to | |
864 | * the next format string */ | |
865 | VA_FORMAT_ADVANCE(format, ap); | |
866 | ||
867 | IOVEC_SET_STRING(iovec[(*n)++], m); | |
868 | ||
869 | if (newline_separator) { | |
870 | iovec[*n].iov_base = (char*) &nl; | |
871 | iovec[*n].iov_len = 1; | |
872 | (*n)++; | |
873 | } | |
874 | ||
875 | format = va_arg(ap, char *); | |
876 | } | |
877 | return 0; | |
878 | } | |
879 | ||
877d54e9 LP |
880 | int log_struct_internal( |
881 | int level, | |
086891e5 | 882 | int error, |
877d54e9 LP |
883 | const char *file, |
884 | int line, | |
885 | const char *func, | |
886 | const char *format, ...) { | |
887 | ||
bf371116 LP |
888 | char buf[LINE_MAX]; |
889 | bool found = false; | |
ff524019 | 890 | LogRealm realm = LOG_REALM_REMOVE_LEVEL(level); |
5c0aa72a | 891 | PROTECT_ERRNO; |
877d54e9 | 892 | va_list ap; |
bf371116 LP |
893 | |
894 | if (error < 0) | |
895 | error = -error; | |
877d54e9 | 896 | |
ff524019 | 897 | if (_likely_(LOG_PRI(level) > log_max_level[realm])) |
bf371116 | 898 | return -error; |
877d54e9 LP |
899 | |
900 | if (log_target == LOG_TARGET_NULL) | |
bf371116 | 901 | return -error; |
877d54e9 LP |
902 | |
903 | if ((level & LOG_FACMASK) == 0) | |
904 | level = log_facility | LOG_PRI(level); | |
905 | ||
5b5688af ZJS |
906 | if (IN_SET(log_target, LOG_TARGET_AUTO, |
907 | LOG_TARGET_JOURNAL_OR_KMSG, | |
908 | LOG_TARGET_JOURNAL) && | |
877d54e9 | 909 | journal_fd >= 0) { |
877d54e9 | 910 | char header[LINE_MAX]; |
b92bea5d | 911 | struct iovec iovec[17] = {}; |
877d54e9 | 912 | unsigned n = 0, i; |
8a03c9ef | 913 | int r; |
543295ad ZJS |
914 | struct msghdr mh = { |
915 | .msg_iov = iovec, | |
916 | }; | |
bf371116 | 917 | bool fallback = false; |
877d54e9 LP |
918 | |
919 | /* If the journal is available do structured logging */ | |
4b58153d | 920 | log_do_header(header, sizeof(header), level, error, file, line, func, NULL, NULL, NULL, NULL); |
877d54e9 LP |
921 | IOVEC_SET_STRING(iovec[n++], header); |
922 | ||
923 | va_start(ap, format); | |
8a03c9ef ZJS |
924 | r = log_format_iovec(iovec, ELEMENTSOF(iovec), &n, true, error, format, ap); |
925 | if (r < 0) | |
926 | fallback = true; | |
927 | else { | |
928 | mh.msg_iovlen = n; | |
929 | (void) sendmsg(journal_fd, &mh, MSG_NOSIGNAL); | |
877d54e9 | 930 | } |
877d54e9 | 931 | |
e98055de | 932 | va_end(ap); |
877d54e9 LP |
933 | for (i = 1; i < n; i += 2) |
934 | free(iovec[i].iov_base); | |
935 | ||
bf371116 LP |
936 | if (!fallback) |
937 | return -error; | |
938 | } | |
877d54e9 | 939 | |
bf371116 | 940 | /* Fallback if journal logging is not available or didn't work. */ |
6357ac66 | 941 | |
bf371116 LP |
942 | va_start(ap, format); |
943 | while (format) { | |
944 | va_list aq; | |
877d54e9 | 945 | |
bf371116 LP |
946 | if (error != 0) |
947 | errno = error; | |
877d54e9 | 948 | |
bf371116 LP |
949 | va_copy(aq, ap); |
950 | vsnprintf(buf, sizeof(buf), format, aq); | |
951 | va_end(aq); | |
963ddb91 | 952 | |
bf371116 LP |
953 | if (startswith(buf, "MESSAGE=")) { |
954 | found = true; | |
955 | break; | |
877d54e9 | 956 | } |
877d54e9 | 957 | |
bf371116 LP |
958 | VA_FORMAT_ADVANCE(format, ap); |
959 | ||
960 | format = va_arg(ap, char *); | |
877d54e9 | 961 | } |
bf371116 | 962 | va_end(ap); |
877d54e9 | 963 | |
bf371116 LP |
964 | if (!found) |
965 | return -error; | |
966 | ||
93484b47 | 967 | return log_dispatch_internal(level, error, file, line, func, NULL, NULL, NULL, NULL, buf + 8); |
877d54e9 LP |
968 | } |
969 | ||
34f0e866 LP |
970 | int log_set_target_from_string(const char *e) { |
971 | LogTarget t; | |
972 | ||
5ba081b0 LP |
973 | t = log_target_from_string(e); |
974 | if (t < 0) | |
34f0e866 LP |
975 | return -EINVAL; |
976 | ||
977 | log_set_target(t); | |
978 | return 0; | |
979 | } | |
980 | ||
ff524019 | 981 | int log_set_max_level_from_string_realm(LogRealm realm, const char *e) { |
34f0e866 LP |
982 | int t; |
983 | ||
5ba081b0 LP |
984 | t = log_level_from_string(e); |
985 | if (t < 0) | |
737af734 | 986 | return -EINVAL; |
34f0e866 | 987 | |
ff524019 | 988 | log_set_max_level_realm(realm, t); |
34f0e866 LP |
989 | return 0; |
990 | } | |
991 | ||
96287a49 | 992 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
1de1c9c3 LP |
993 | |
994 | /* | |
995 | * The systemd.log_xyz= settings are parsed by all tools, and | |
996 | * so is "debug". | |
997 | * | |
5e07a79e LP |
998 | * However, "quiet" is only parsed by PID 1, and only turns of |
999 | * status output to /dev/console, but does not alter the log | |
1000 | * level. | |
1de1c9c3 LP |
1001 | */ |
1002 | ||
1003 | if (streq(key, "debug") && !value) | |
1004 | log_set_max_level(LOG_DEBUG); | |
1005 | ||
1d84ad94 LP |
1006 | else if (proc_cmdline_key_streq(key, "systemd.log_target")) { |
1007 | ||
1008 | if (proc_cmdline_value_missing(key, value)) | |
1009 | return 0; | |
1de1c9c3 LP |
1010 | |
1011 | if (log_set_target_from_string(value) < 0) | |
1012 | log_warning("Failed to parse log target '%s'. Ignoring.", value); | |
1013 | ||
1d84ad94 LP |
1014 | } else if (proc_cmdline_key_streq(key, "systemd.log_level")) { |
1015 | ||
1016 | if (proc_cmdline_value_missing(key, value)) | |
1017 | return 0; | |
1de1c9c3 LP |
1018 | |
1019 | if (log_set_max_level_from_string(value) < 0) | |
1020 | log_warning("Failed to parse log level '%s'. Ignoring.", value); | |
1021 | ||
1d84ad94 | 1022 | } else if (proc_cmdline_key_streq(key, "systemd.log_color")) { |
1de1c9c3 | 1023 | |
1d84ad94 | 1024 | if (log_show_color_from_string(value ?: "1") < 0) |
1de1c9c3 LP |
1025 | log_warning("Failed to parse log color setting '%s'. Ignoring.", value); |
1026 | ||
1d84ad94 | 1027 | } else if (proc_cmdline_key_streq(key, "systemd.log_location")) { |
1de1c9c3 | 1028 | |
1d84ad94 | 1029 | if (log_show_location_from_string(value ?: "1") < 0) |
1de1c9c3 LP |
1030 | log_warning("Failed to parse log location setting '%s'. Ignoring.", value); |
1031 | } | |
1032 | ||
1033 | return 0; | |
1034 | } | |
1035 | ||
ff524019 | 1036 | void log_parse_environment_realm(LogRealm realm) { |
34f0e866 | 1037 | const char *e; |
b8d0ffc2 | 1038 | |
ee46e555 | 1039 | if (get_ctty_devnr(0, NULL) < 0) |
1d84ad94 LP |
1040 | /* Only try to read the command line in daemons. We assume that anything that has a controlling tty is |
1041 | user stuff. */ | |
1042 | (void) proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_STRIP_RD_PREFIX); | |
34f0e866 | 1043 | |
4db17f29 | 1044 | e = secure_getenv("SYSTEMD_LOG_TARGET"); |
88fae6e0 | 1045 | if (e && log_set_target_from_string(e) < 0) |
f0ea29ea | 1046 | log_warning("Failed to parse log target '%s'. Ignoring.", e); |
34f0e866 | 1047 | |
4db17f29 | 1048 | e = secure_getenv("SYSTEMD_LOG_LEVEL"); |
ff524019 | 1049 | if (e && log_set_max_level_from_string_realm(realm, e) < 0) |
f0ea29ea | 1050 | log_warning("Failed to parse log level '%s'. Ignoring.", e); |
bbe63281 | 1051 | |
4db17f29 | 1052 | e = secure_getenv("SYSTEMD_LOG_COLOR"); |
88fae6e0 | 1053 | if (e && log_show_color_from_string(e) < 0) |
f0ea29ea | 1054 | log_warning("Failed to parse bool '%s'. Ignoring.", e); |
bbe63281 | 1055 | |
4db17f29 | 1056 | e = secure_getenv("SYSTEMD_LOG_LOCATION"); |
88fae6e0 | 1057 | if (e && log_show_location_from_string(e) < 0) |
f0ea29ea | 1058 | log_warning("Failed to parse bool '%s'. Ignoring.", e); |
34f0e866 LP |
1059 | } |
1060 | ||
1adf1049 LP |
1061 | LogTarget log_get_target(void) { |
1062 | return log_target; | |
1063 | } | |
1064 | ||
ff524019 ZJS |
1065 | int log_get_max_level_realm(LogRealm realm) { |
1066 | return log_max_level[realm]; | |
1adf1049 LP |
1067 | } |
1068 | ||
bbe63281 LP |
1069 | void log_show_color(bool b) { |
1070 | show_color = b; | |
1071 | } | |
1072 | ||
b1e90ec5 ZJS |
1073 | bool log_get_show_color(void) { |
1074 | return show_color; | |
1075 | } | |
1076 | ||
bbe63281 LP |
1077 | void log_show_location(bool b) { |
1078 | show_location = b; | |
1079 | } | |
1080 | ||
b1e90ec5 ZJS |
1081 | bool log_get_show_location(void) { |
1082 | return show_location; | |
1083 | } | |
1084 | ||
bbe63281 LP |
1085 | int log_show_color_from_string(const char *e) { |
1086 | int t; | |
1087 | ||
5ba081b0 LP |
1088 | t = parse_boolean(e); |
1089 | if (t < 0) | |
1090 | return t; | |
bbe63281 LP |
1091 | |
1092 | log_show_color(t); | |
1093 | return 0; | |
1094 | } | |
1095 | ||
1096 | int log_show_location_from_string(const char *e) { | |
1097 | int t; | |
1098 | ||
5ba081b0 LP |
1099 | t = parse_boolean(e); |
1100 | if (t < 0) | |
1101 | return t; | |
bbe63281 LP |
1102 | |
1103 | log_show_location(t); | |
1104 | return 0; | |
1105 | } | |
1106 | ||
81270860 | 1107 | bool log_on_console(void) { |
5b5688af ZJS |
1108 | if (IN_SET(log_target, LOG_TARGET_CONSOLE, |
1109 | LOG_TARGET_CONSOLE_PREFIXED)) | |
81270860 LP |
1110 | return true; |
1111 | ||
1112 | return syslog_fd < 0 && kmsg_fd < 0 && journal_fd < 0; | |
1113 | } | |
1114 | ||
2c5859af | 1115 | static const char *const log_target_table[_LOG_TARGET_MAX] = { |
34f0e866 | 1116 | [LOG_TARGET_CONSOLE] = "console", |
aca83a53 | 1117 | [LOG_TARGET_CONSOLE_PREFIXED] = "console-prefixed", |
34f0e866 | 1118 | [LOG_TARGET_KMSG] = "kmsg", |
5ba081b0 LP |
1119 | [LOG_TARGET_JOURNAL] = "journal", |
1120 | [LOG_TARGET_JOURNAL_OR_KMSG] = "journal-or-kmsg", | |
1121 | [LOG_TARGET_SYSLOG] = "syslog", | |
843d2643 | 1122 | [LOG_TARGET_SYSLOG_OR_KMSG] = "syslog-or-kmsg", |
5ba081b0 | 1123 | [LOG_TARGET_AUTO] = "auto", |
a6903061 | 1124 | [LOG_TARGET_SAFE] = "safe", |
5ba081b0 | 1125 | [LOG_TARGET_NULL] = "null" |
34f0e866 LP |
1126 | }; |
1127 | ||
1128 | DEFINE_STRING_TABLE_LOOKUP(log_target, LogTarget); | |
4daf54a8 ZJS |
1129 | |
1130 | void log_received_signal(int level, const struct signalfd_siginfo *si) { | |
1131 | if (si->ssi_pid > 0) { | |
1132 | _cleanup_free_ char *p = NULL; | |
1133 | ||
1134 | get_process_comm(si->ssi_pid, &p); | |
1135 | ||
1136 | log_full(level, | |
1fa2f38f | 1137 | "Received SIG%s from PID %"PRIu32" (%s).", |
4daf54a8 ZJS |
1138 | signal_to_string(si->ssi_signo), |
1139 | si->ssi_pid, strna(p)); | |
1140 | } else | |
1141 | log_full(level, | |
1142 | "Received SIG%s.", | |
1143 | signal_to_string(si->ssi_signo)); | |
1144 | ||
1145 | } | |
c1dc6153 LP |
1146 | |
1147 | void log_set_upgrade_syslog_to_journal(bool b) { | |
1148 | upgrade_syslog_to_journal = b; | |
1149 | } | |
158350e8 LP |
1150 | |
1151 | int log_syntax_internal( | |
1152 | const char *unit, | |
1153 | int level, | |
1154 | const char *config_file, | |
1155 | unsigned config_line, | |
1156 | int error, | |
1157 | const char *file, | |
1158 | int line, | |
1159 | const char *func, | |
1160 | const char *format, ...) { | |
1161 | ||
1162 | PROTECT_ERRNO; | |
1163 | char buffer[LINE_MAX]; | |
158350e8 | 1164 | va_list ap; |
c2dec702 | 1165 | const char *unit_fmt = NULL; |
158350e8 LP |
1166 | |
1167 | if (error < 0) | |
1168 | error = -error; | |
1169 | ||
ff524019 | 1170 | if (_likely_(LOG_PRI(level) > log_max_level[LOG_REALM_SYSTEMD])) |
158350e8 LP |
1171 | return -error; |
1172 | ||
1173 | if (log_target == LOG_TARGET_NULL) | |
1174 | return -error; | |
1175 | ||
1176 | if (error != 0) | |
1177 | errno = error; | |
1178 | ||
1179 | va_start(ap, format); | |
1180 | vsnprintf(buffer, sizeof(buffer), format, ap); | |
1181 | va_end(ap); | |
1182 | ||
1183 | if (unit) | |
c2dec702 ZJS |
1184 | unit_fmt = getpid() == 1 ? "UNIT=%s" : "USER_UNIT=%s"; |
1185 | ||
1186 | return log_struct_internal( | |
ff524019 ZJS |
1187 | LOG_REALM_PLUS_LEVEL(LOG_REALM_SYSTEMD, level), |
1188 | error, | |
c2dec702 | 1189 | file, line, func, |
2b044526 | 1190 | "MESSAGE_ID=" SD_MESSAGE_INVALID_CONFIGURATION_STR, |
c2dec702 ZJS |
1191 | "CONFIG_FILE=%s", config_file, |
1192 | "CONFIG_LINE=%u", config_line, | |
e697dfef | 1193 | LOG_MESSAGE("%s:%u: %s", config_file, config_line, buffer), |
c2dec702 ZJS |
1194 | unit_fmt, unit, |
1195 | NULL); | |
158350e8 | 1196 | } |
48a601fe LP |
1197 | |
1198 | void log_set_always_reopen_console(bool b) { | |
1199 | always_reopen_console = b; | |
1200 | } |