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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 | |
a7334b09 LP |
6 | ***/ |
7 | ||
c9b97d2a | 8 | #include <errno.h> |
16801e90 | 9 | #include <fcntl.h> |
11c3a366 TA |
10 | #include <inttypes.h> |
11 | #include <limits.h> | |
07630cea LP |
12 | #include <stdarg.h> |
13 | #include <stddef.h> | |
14 | #include <stdio.h> | |
11c3a366 TA |
15 | #include <string.h> |
16 | #include <sys/signalfd.h> | |
16801e90 | 17 | #include <sys/socket.h> |
11c3a366 TA |
18 | #include <sys/time.h> |
19 | #include <sys/uio.h> | |
16801e90 | 20 | #include <sys/un.h> |
11c3a366 | 21 | #include <time.h> |
07630cea | 22 | #include <unistd.h> |
5899f3b7 | 23 | |
158350e8 | 24 | #include "sd-messages.h" |
07630cea | 25 | |
b5efdb8a | 26 | #include "alloc-util.h" |
3ffd4af2 | 27 | #include "fd-util.h" |
f97b34a6 | 28 | #include "format-util.h" |
afc5dbf3 | 29 | #include "io-util.h" |
3ffd4af2 | 30 | #include "log.h" |
07630cea LP |
31 | #include "macro.h" |
32 | #include "missing.h" | |
4e731273 LP |
33 | #include "parse-util.h" |
34 | #include "proc-cmdline.h" | |
0b452006 | 35 | #include "process-util.h" |
24882e06 | 36 | #include "signal-util.h" |
07630cea | 37 | #include "socket-util.h" |
15a5e950 | 38 | #include "stdio-util.h" |
8b43440b | 39 | #include "string-table.h" |
07630cea | 40 | #include "string-util.h" |
7ccbd1ae | 41 | #include "syslog-util.h" |
07630cea | 42 | #include "terminal-util.h" |
93cc7779 | 43 | #include "time-util.h" |
d04ce5a9 | 44 | #include "utf8.h" |
07630cea | 45 | #include "util.h" |
5899f3b7 | 46 | |
bb99a35a LP |
47 | #define SNDBUF_SIZE (8*1024*1024) |
48 | ||
16801e90 | 49 | static LogTarget log_target = LOG_TARGET_CONSOLE; |
ff524019 ZJS |
50 | static int log_max_level[] = {LOG_INFO, LOG_INFO}; |
51 | assert_cc(ELEMENTSOF(log_max_level) == _LOG_REALM_MAX); | |
3eff4208 | 52 | static int log_facility = LOG_DAEMON; |
16801e90 | 53 | |
843d2643 | 54 | static int console_fd = STDERR_FILENO; |
16801e90 LP |
55 | static int syslog_fd = -1; |
56 | static int kmsg_fd = -1; | |
5ba081b0 | 57 | static int journal_fd = -1; |
16801e90 | 58 | |
c31e1495 LP |
59 | static bool syslog_is_stream = false; |
60 | ||
bbe63281 LP |
61 | static bool show_color = false; |
62 | static bool show_location = false; | |
63 | ||
c1dc6153 | 64 | static bool upgrade_syslog_to_journal = false; |
48a601fe | 65 | static bool always_reopen_console = false; |
16e4fd87 | 66 | static bool open_when_needed = false; |
adf47c91 | 67 | static bool prohibit_ipc = false; |
c1dc6153 | 68 | |
35b8ca3a | 69 | /* Akin to glibc's __abort_msg; which is private and we hence cannot |
185986c6 LP |
70 | * use here. */ |
71 | static char *log_abort_msg = NULL; | |
72 | ||
780747da ZJS |
73 | /* An assert to use in logging functions that does not call recursively |
74 | * into our logging functions (since that might lead to a loop). */ | |
75 | #define assert_raw(expr) \ | |
76 | do { \ | |
77 | if (_unlikely_(!(expr))) { \ | |
78 | fputs(#expr "\n", stderr); \ | |
79 | abort(); \ | |
80 | } \ | |
81 | } while (false) | |
82 | ||
cc2b9e6b | 83 | static void log_close_console(void) { |
e7685a77 | 84 | console_fd = safe_close_above_stdio(console_fd); |
16801e90 LP |
85 | } |
86 | ||
843d2643 | 87 | static int log_open_console(void) { |
16801e90 | 88 | |
cc2b9e6b AJ |
89 | if (!always_reopen_console) { |
90 | console_fd = STDERR_FILENO; | |
16801e90 | 91 | return 0; |
cc2b9e6b | 92 | } |
843d2643 | 93 | |
cc2b9e6b | 94 | if (console_fd < 3) { |
5ba081b0 | 95 | console_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC); |
cd15c418 | 96 | if (console_fd < 0) |
843d2643 | 97 | return console_fd; |
7fe2903c LP |
98 | |
99 | console_fd = fd_move_above_stdio(console_fd); | |
cc2b9e6b | 100 | } |
843d2643 LP |
101 | |
102 | return 0; | |
103 | } | |
104 | ||
cc2b9e6b | 105 | static void log_close_kmsg(void) { |
03e334a1 | 106 | kmsg_fd = safe_close(kmsg_fd); |
843d2643 LP |
107 | } |
108 | ||
109 | static int log_open_kmsg(void) { | |
16801e90 LP |
110 | |
111 | if (kmsg_fd >= 0) | |
112 | return 0; | |
113 | ||
674f8283 | 114 | kmsg_fd = open("/dev/kmsg", O_WRONLY|O_NOCTTY|O_CLOEXEC); |
cd15c418 | 115 | if (kmsg_fd < 0) |
16801e90 | 116 | return -errno; |
0dae83f9 | 117 | |
7fe2903c | 118 | kmsg_fd = fd_move_above_stdio(kmsg_fd); |
16801e90 LP |
119 | return 0; |
120 | } | |
121 | ||
cc2b9e6b | 122 | static void log_close_syslog(void) { |
03e334a1 | 123 | syslog_fd = safe_close(syslog_fd); |
16801e90 LP |
124 | } |
125 | ||
c31e1495 | 126 | static int create_log_socket(int type) { |
8b18fdc1 | 127 | struct timeval tv; |
95066a90 | 128 | int fd; |
c31e1495 | 129 | |
8b18fdc1 | 130 | fd = socket(AF_UNIX, type|SOCK_CLOEXEC, 0); |
5ba081b0 | 131 | if (fd < 0) |
c31e1495 LP |
132 | return -errno; |
133 | ||
7fe2903c | 134 | fd = fd_move_above_stdio(fd); |
0474ef7b | 135 | (void) fd_inc_sndbuf(fd, SNDBUF_SIZE); |
bb99a35a | 136 | |
7fe2903c LP |
137 | /* We need a blocking fd here since we'd otherwise lose messages way too early. However, let's not hang forever |
138 | * in the unlikely case of a deadlock. */ | |
df0ff127 | 139 | if (getpid_cached() == 1) |
4d89874a ZJS |
140 | timeval_store(&tv, 10 * USEC_PER_MSEC); |
141 | else | |
142 | timeval_store(&tv, 10 * USEC_PER_SEC); | |
086891e5 | 143 | (void) setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)); |
8b18fdc1 | 144 | |
c31e1495 LP |
145 | return fd; |
146 | } | |
147 | ||
843d2643 | 148 | static int log_open_syslog(void) { |
95066a90 LP |
149 | |
150 | static const union sockaddr_union sa = { | |
b92bea5d ZJS |
151 | .un.sun_family = AF_UNIX, |
152 | .un.sun_path = "/dev/log", | |
153 | }; | |
16801e90 | 154 | |
95066a90 LP |
155 | int r; |
156 | ||
16801e90 LP |
157 | if (syslog_fd >= 0) |
158 | return 0; | |
159 | ||
5ba081b0 LP |
160 | syslog_fd = create_log_socket(SOCK_DGRAM); |
161 | if (syslog_fd < 0) { | |
162 | r = syslog_fd; | |
843d2643 | 163 | goto fail; |
16801e90 LP |
164 | } |
165 | ||
fc2fffe7 | 166 | if (connect(syslog_fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
03e334a1 | 167 | safe_close(syslog_fd); |
c31e1495 LP |
168 | |
169 | /* Some legacy syslog systems still use stream | |
170 | * sockets. They really shouldn't. But what can we | |
171 | * do... */ | |
5ba081b0 LP |
172 | syslog_fd = create_log_socket(SOCK_STREAM); |
173 | if (syslog_fd < 0) { | |
174 | r = syslog_fd; | |
c31e1495 LP |
175 | goto fail; |
176 | } | |
177 | ||
fc2fffe7 | 178 | if (connect(syslog_fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
c31e1495 LP |
179 | r = -errno; |
180 | goto fail; | |
181 | } | |
182 | ||
183 | syslog_is_stream = true; | |
184 | } else | |
185 | syslog_is_stream = false; | |
186 | ||
16801e90 | 187 | return 0; |
843d2643 LP |
188 | |
189 | fail: | |
190 | log_close_syslog(); | |
843d2643 LP |
191 | return r; |
192 | } | |
193 | ||
cc2b9e6b | 194 | static void log_close_journal(void) { |
03e334a1 | 195 | journal_fd = safe_close(journal_fd); |
5ba081b0 LP |
196 | } |
197 | ||
198 | static int log_open_journal(void) { | |
95066a90 LP |
199 | |
200 | static const union sockaddr_union sa = { | |
b92bea5d ZJS |
201 | .un.sun_family = AF_UNIX, |
202 | .un.sun_path = "/run/systemd/journal/socket", | |
203 | }; | |
95066a90 | 204 | |
5ba081b0 LP |
205 | int r; |
206 | ||
207 | if (journal_fd >= 0) | |
208 | return 0; | |
209 | ||
210 | journal_fd = create_log_socket(SOCK_DGRAM); | |
211 | if (journal_fd < 0) { | |
212 | r = journal_fd; | |
213 | goto fail; | |
214 | } | |
215 | ||
fc2fffe7 | 216 | if (connect(journal_fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
5ba081b0 LP |
217 | r = -errno; |
218 | goto fail; | |
219 | } | |
220 | ||
5ba081b0 LP |
221 | return 0; |
222 | ||
223 | fail: | |
224 | log_close_journal(); | |
5ba081b0 LP |
225 | return r; |
226 | } | |
227 | ||
843d2643 LP |
228 | int log_open(void) { |
229 | int r; | |
230 | ||
e3e42fc2 ZJS |
231 | /* Do not call from library code. */ |
232 | ||
843d2643 LP |
233 | /* If we don't use the console we close it here, to not get |
234 | * killed by SAK. If we don't use syslog we close it here so | |
235 | * that we are not confused by somebody deleting the socket in | |
cc2b9e6b AJ |
236 | * the fs, and to make sure we don't use it if prohibit_ipc is |
237 | * set. If we don't use /dev/kmsg we still keep it open, | |
843d2643 LP |
238 | * because there is no reason to close it. */ |
239 | ||
9fae33d2 | 240 | if (log_target == LOG_TARGET_NULL) { |
5ba081b0 | 241 | log_close_journal(); |
9fae33d2 LP |
242 | log_close_syslog(); |
243 | log_close_console(); | |
244 | return 0; | |
245 | } | |
246 | ||
6c347d50 | 247 | if (log_target != LOG_TARGET_AUTO || |
df0ff127 | 248 | getpid_cached() == 1 || |
f41c094c | 249 | isatty(STDERR_FILENO) <= 0) { |
bb7df0da | 250 | |
adf47c91 LP |
251 | if (!prohibit_ipc && |
252 | IN_SET(log_target, LOG_TARGET_AUTO, | |
5b5688af ZJS |
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 | ||
adf47c91 LP |
263 | if (!prohibit_ipc && |
264 | IN_SET(log_target, LOG_TARGET_SYSLOG_OR_KMSG, | |
5b5688af | 265 | LOG_TARGET_SYSLOG)) { |
5ba081b0 LP |
266 | r = log_open_syslog(); |
267 | if (r >= 0) { | |
268 | log_close_journal(); | |
269 | log_close_console(); | |
270 | return r; | |
271 | } | |
272 | } | |
273 | ||
5b5688af | 274 | if (IN_SET(log_target, LOG_TARGET_AUTO, |
5b5688af ZJS |
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) { |
e3e42fc2 ZJS |
309 | /* Do not call from library code. */ |
310 | ||
5ba081b0 | 311 | log_close_journal(); |
871e5809 | 312 | log_close_syslog(); |
5ba081b0 LP |
313 | log_close_kmsg(); |
314 | log_close_console(); | |
871e5809 LP |
315 | } |
316 | ||
4d8a7798 | 317 | void log_forget_fds(void) { |
e3e42fc2 ZJS |
318 | /* Do not call from library code. */ |
319 | ||
5ba081b0 | 320 | console_fd = kmsg_fd = syslog_fd = journal_fd = -1; |
4d8a7798 MS |
321 | } |
322 | ||
ff524019 | 323 | void log_set_max_level_realm(LogRealm realm, int level) { |
16801e90 | 324 | assert((level & LOG_PRIMASK) == level); |
ff524019 | 325 | assert(realm < ELEMENTSOF(log_max_level)); |
16801e90 | 326 | |
ff524019 | 327 | log_max_level[realm] = level; |
16801e90 LP |
328 | } |
329 | ||
3eff4208 LP |
330 | void log_set_facility(int facility) { |
331 | log_facility = facility; | |
332 | } | |
333 | ||
843d2643 | 334 | static int write_to_console( |
20c03b7b | 335 | int level, |
086891e5 | 336 | int error, |
95066a90 | 337 | const char *file, |
20c03b7b LP |
338 | int line, |
339 | const char *func, | |
340 | const char *buffer) { | |
5899f3b7 | 341 | |
79c95440 | 342 | char location[256], prefix[1 + DECIMAL_STR_MAX(int) + 2]; |
aca83a53 | 343 | struct iovec iovec[6] = {}; |
843d2643 LP |
344 | unsigned n = 0; |
345 | bool highlight; | |
5899f3b7 | 346 | |
843d2643 LP |
347 | if (console_fd < 0) |
348 | return 0; | |
349 | ||
aca83a53 | 350 | if (log_target == LOG_TARGET_CONSOLE_PREFIXED) { |
0474ef7b | 351 | xsprintf(prefix, "<%i>", level); |
e6a7ec4b | 352 | iovec[n++] = IOVEC_MAKE_STRING(prefix); |
aca83a53 LP |
353 | } |
354 | ||
bbe63281 | 355 | highlight = LOG_PRI(level) <= LOG_ERR && show_color; |
843d2643 | 356 | |
674f8283 | 357 | if (show_location) { |
4ad2b562 | 358 | (void) snprintf(location, sizeof location, "(%s:%i) ", file, line); |
e6a7ec4b | 359 | iovec[n++] = IOVEC_MAKE_STRING(location); |
674f8283 LP |
360 | } |
361 | ||
843d2643 | 362 | if (highlight) |
e6a7ec4b LP |
363 | iovec[n++] = IOVEC_MAKE_STRING(ANSI_HIGHLIGHT_RED); |
364 | iovec[n++] = IOVEC_MAKE_STRING(buffer); | |
843d2643 | 365 | if (highlight) |
e6a7ec4b LP |
366 | iovec[n++] = IOVEC_MAKE_STRING(ANSI_NORMAL); |
367 | iovec[n++] = IOVEC_MAKE_STRING("\n"); | |
843d2643 | 368 | |
0e6eaa2d LP |
369 | if (writev(console_fd, iovec, n) < 0) { |
370 | ||
df0ff127 | 371 | if (errno == EIO && getpid_cached() == 1) { |
0e6eaa2d LP |
372 | |
373 | /* If somebody tried to kick us from our | |
374 | * console tty (via vhangup() or suchlike), | |
375 | * try to reconnect */ | |
376 | ||
377 | log_close_console(); | |
378 | log_open_console(); | |
379 | ||
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 LP |
408 | time_t t; |
409 | struct tm *tm; | |
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); | |
fdf9f9bb ZJS |
417 | tm = localtime(&t); |
418 | if (!tm) | |
16801e90 LP |
419 | return -EINVAL; |
420 | ||
421 | if (strftime(header_time, sizeof(header_time), "%h %e %T ", tm) <= 0) | |
422 | return -EINVAL; | |
423 | ||
df0ff127 | 424 | xsprintf(header_pid, "["PID_FMT"]: ", getpid_cached()); |
16801e90 | 425 | |
e6a7ec4b LP |
426 | iovec[0] = IOVEC_MAKE_STRING(header_priority); |
427 | iovec[1] = IOVEC_MAKE_STRING(header_time); | |
428 | iovec[2] = IOVEC_MAKE_STRING(program_invocation_short_name); | |
429 | iovec[3] = IOVEC_MAKE_STRING(header_pid); | |
430 | iovec[4] = IOVEC_MAKE_STRING(buffer); | |
16801e90 | 431 | |
c899f8c6 | 432 | /* When using syslog via SOCK_STREAM separate the messages by NUL chars */ |
c31e1495 LP |
433 | if (syslog_is_stream) |
434 | iovec[4].iov_len++; | |
435 | ||
c31e1495 LP |
436 | for (;;) { |
437 | ssize_t n; | |
438 | ||
8f7f7a1b MS |
439 | n = sendmsg(syslog_fd, &msghdr, MSG_NOSIGNAL); |
440 | if (n < 0) | |
c31e1495 LP |
441 | return -errno; |
442 | ||
443 | if (!syslog_is_stream || | |
444 | (size_t) n >= IOVEC_TOTAL_SIZE(iovec, ELEMENTSOF(iovec))) | |
445 | break; | |
446 | ||
447 | IOVEC_INCREMENT(iovec, ELEMENTSOF(iovec), n); | |
448 | } | |
16801e90 | 449 | |
843d2643 | 450 | return 1; |
16801e90 LP |
451 | } |
452 | ||
453 | static int write_to_kmsg( | |
086891e5 LP |
454 | int level, |
455 | int error, | |
bcf5c276 | 456 | const char *file, |
086891e5 LP |
457 | int line, |
458 | const char *func, | |
086891e5 | 459 | const char *buffer) { |
16801e90 | 460 | |
5ffa8c81 ZJS |
461 | char header_priority[2 + DECIMAL_STR_MAX(int) + 1], |
462 | header_pid[4 + DECIMAL_STR_MAX(pid_t) + 1]; | |
b92bea5d | 463 | struct iovec iovec[5] = {}; |
16801e90 LP |
464 | |
465 | if (kmsg_fd < 0) | |
843d2643 | 466 | return 0; |
16801e90 | 467 | |
5ffa8c81 | 468 | xsprintf(header_priority, "<%i>", level); |
df0ff127 | 469 | xsprintf(header_pid, "["PID_FMT"]: ", getpid_cached()); |
16801e90 | 470 | |
e6a7ec4b LP |
471 | iovec[0] = IOVEC_MAKE_STRING(header_priority); |
472 | iovec[1] = IOVEC_MAKE_STRING(program_invocation_short_name); | |
473 | iovec[2] = IOVEC_MAKE_STRING(header_pid); | |
474 | iovec[3] = IOVEC_MAKE_STRING(buffer); | |
475 | iovec[4] = IOVEC_MAKE_STRING("\n"); | |
16801e90 LP |
476 | |
477 | if (writev(kmsg_fd, iovec, ELEMENTSOF(iovec)) < 0) | |
478 | return -errno; | |
479 | ||
843d2643 | 480 | return 1; |
16801e90 LP |
481 | } |
482 | ||
086891e5 LP |
483 | static int log_do_header( |
484 | char *header, | |
485 | size_t size, | |
486 | int level, | |
487 | int error, | |
488 | const char *file, int line, const char *func, | |
4b58153d LP |
489 | const char *object_field, const char *object, |
490 | const char *extra_field, const char *extra) { | |
f8e6f4aa | 491 | int r; |
086891e5 | 492 | |
f8e6f4aa ZJS |
493 | r = snprintf(header, size, |
494 | "PRIORITY=%i\n" | |
495 | "SYSLOG_FACILITY=%i\n" | |
496 | "%s%.256s%s" /* CODE_FILE */ | |
497 | "%s%.*i%s" /* CODE_LINE */ | |
498 | "%s%.256s%s" /* CODE_FUNC */ | |
499 | "%s%.*i%s" /* ERRNO */ | |
500 | "%s%.256s%s" /* object */ | |
501 | "%s%.256s%s" /* extra */ | |
502 | "SYSLOG_IDENTIFIER=%.256s\n", | |
503 | LOG_PRI(level), | |
504 | LOG_FAC(level), | |
505 | isempty(file) ? "" : "CODE_FILE=", | |
506 | isempty(file) ? "" : file, | |
507 | isempty(file) ? "" : "\n", | |
508 | line ? "CODE_LINE=" : "", | |
509 | line ? 1 : 0, line, /* %.0d means no output too, special case for 0 */ | |
510 | line ? "\n" : "", | |
511 | isempty(func) ? "" : "CODE_FUNC=", | |
512 | isempty(func) ? "" : func, | |
513 | isempty(func) ? "" : "\n", | |
514 | error ? "ERRNO=" : "", | |
515 | error ? 1 : 0, error, | |
516 | error ? "\n" : "", | |
517 | isempty(object) ? "" : object_field, | |
518 | isempty(object) ? "" : object, | |
519 | isempty(object) ? "" : "\n", | |
520 | isempty(extra) ? "" : extra_field, | |
521 | isempty(extra) ? "" : extra, | |
522 | isempty(extra) ? "" : "\n", | |
523 | program_invocation_short_name); | |
780747da | 524 | assert_raw((size_t) r < size); |
086891e5 | 525 | |
41a79f10 ZJS |
526 | return 0; |
527 | } | |
5ba081b0 | 528 | |
41a79f10 | 529 | static int write_to_journal( |
086891e5 LP |
530 | int level, |
531 | int error, | |
bcf5c276 | 532 | const char *file, |
086891e5 LP |
533 | int line, |
534 | const char *func, | |
535 | const char *object_field, | |
536 | const char *object, | |
4b58153d LP |
537 | const char *extra_field, |
538 | const char *extra, | |
086891e5 | 539 | const char *buffer) { |
41a79f10 ZJS |
540 | |
541 | char header[LINE_MAX]; | |
b92bea5d ZJS |
542 | struct iovec iovec[4] = {}; |
543 | struct msghdr mh = {}; | |
41a79f10 ZJS |
544 | |
545 | if (journal_fd < 0) | |
546 | return 0; | |
547 | ||
4b58153d | 548 | log_do_header(header, sizeof(header), level, error, file, line, func, object_field, object, extra_field, extra); |
5ba081b0 | 549 | |
e6a7ec4b LP |
550 | iovec[0] = IOVEC_MAKE_STRING(header); |
551 | iovec[1] = IOVEC_MAKE_STRING("MESSAGE="); | |
552 | iovec[2] = IOVEC_MAKE_STRING(buffer); | |
553 | iovec[3] = IOVEC_MAKE_STRING("\n"); | |
5ba081b0 | 554 | |
5ba081b0 LP |
555 | mh.msg_iov = iovec; |
556 | mh.msg_iovlen = ELEMENTSOF(iovec); | |
557 | ||
558 | if (sendmsg(journal_fd, &mh, MSG_NOSIGNAL) < 0) | |
559 | return -errno; | |
560 | ||
561 | return 1; | |
562 | } | |
563 | ||
93484b47 | 564 | int log_dispatch_internal( |
086891e5 LP |
565 | int level, |
566 | int error, | |
95066a90 | 567 | const char *file, |
086891e5 LP |
568 | int line, |
569 | const char *func, | |
570 | const char *object_field, | |
571 | const char *object, | |
4b58153d | 572 | const char *extra_field, |
4dd09c6a | 573 | const char *extra, |
086891e5 | 574 | char *buffer) { |
843d2643 | 575 | |
780747da | 576 | assert_raw(buffer); |
843d2643 | 577 | |
0474ef7b LP |
578 | if (error < 0) |
579 | error = -error; | |
580 | ||
9fae33d2 | 581 | if (log_target == LOG_TARGET_NULL) |
bf371116 | 582 | return -error; |
9fae33d2 | 583 | |
29db5834 | 584 | /* Patch in LOG_DAEMON facility if necessary */ |
7d76f312 | 585 | if ((level & LOG_FACMASK) == 0) |
3eff4208 | 586 | level = log_facility | LOG_PRI(level); |
29db5834 | 587 | |
16e4fd87 LP |
588 | if (open_when_needed) |
589 | log_open(); | |
590 | ||
9726b29e LP |
591 | do { |
592 | char *e; | |
9499b235 | 593 | int k = 0; |
843d2643 | 594 | |
9726b29e | 595 | buffer += strspn(buffer, NEWLINE); |
843d2643 | 596 | |
9726b29e LP |
597 | if (buffer[0] == 0) |
598 | break; | |
843d2643 | 599 | |
9726b29e LP |
600 | if ((e = strpbrk(buffer, NEWLINE))) |
601 | *(e++) = 0; | |
843d2643 | 602 | |
5b5688af ZJS |
603 | if (IN_SET(log_target, LOG_TARGET_AUTO, |
604 | LOG_TARGET_JOURNAL_OR_KMSG, | |
605 | LOG_TARGET_JOURNAL)) { | |
5ba081b0 | 606 | |
4b58153d | 607 | k = write_to_journal(level, error, file, line, func, object_field, object, extra_field, extra, buffer); |
e38b8a40 LP |
608 | if (k < 0 && k != -EAGAIN) |
609 | log_close_journal(); | |
5ba081b0 LP |
610 | } |
611 | ||
5b5688af ZJS |
612 | if (IN_SET(log_target, LOG_TARGET_SYSLOG_OR_KMSG, |
613 | LOG_TARGET_SYSLOG)) { | |
9726b29e | 614 | |
4b58153d | 615 | k = write_to_syslog(level, error, file, line, func, buffer); |
e38b8a40 LP |
616 | if (k < 0 && k != -EAGAIN) |
617 | log_close_syslog(); | |
9726b29e LP |
618 | } |
619 | ||
9499b235 | 620 | if (k <= 0 && |
5b5688af | 621 | IN_SET(log_target, LOG_TARGET_AUTO, |
5b5688af ZJS |
622 | LOG_TARGET_SYSLOG_OR_KMSG, |
623 | LOG_TARGET_JOURNAL_OR_KMSG, | |
624 | LOG_TARGET_KMSG)) { | |
9726b29e | 625 | |
e38b8a40 LP |
626 | if (k < 0) |
627 | log_open_kmsg(); | |
628 | ||
4b58153d | 629 | k = write_to_kmsg(level, error, file, line, func, buffer); |
4e7bc3f3 LP |
630 | if (k < 0) { |
631 | log_close_kmsg(); | |
9726b29e | 632 | log_open_console(); |
bf371116 | 633 | } |
9726b29e LP |
634 | } |
635 | ||
bf371116 | 636 | if (k <= 0) |
4b58153d | 637 | (void) write_to_console(level, error, file, line, func, buffer); |
9726b29e LP |
638 | |
639 | buffer = e; | |
640 | } while (buffer); | |
641 | ||
16e4fd87 LP |
642 | if (open_when_needed) |
643 | log_close(); | |
644 | ||
bf371116 | 645 | return -error; |
843d2643 LP |
646 | } |
647 | ||
2149e37c | 648 | int log_dump_internal( |
ff524019 ZJS |
649 | int level, |
650 | int error, | |
651 | const char *file, | |
652 | int line, | |
653 | const char *func, | |
654 | char *buffer) { | |
2149e37c | 655 | |
ff524019 | 656 | LogRealm realm = LOG_REALM_REMOVE_LEVEL(level); |
5c0aa72a | 657 | PROTECT_ERRNO; |
2149e37c LP |
658 | |
659 | /* This modifies the buffer... */ | |
660 | ||
bf371116 LP |
661 | if (error < 0) |
662 | error = -error; | |
663 | ||
ff524019 | 664 | if (_likely_(LOG_PRI(level) > log_max_level[realm])) |
bf371116 | 665 | return -error; |
2149e37c | 666 | |
93484b47 | 667 | return log_dispatch_internal(level, error, file, line, func, NULL, NULL, NULL, NULL, buffer); |
2149e37c LP |
668 | } |
669 | ||
ff524019 | 670 | int log_internalv_realm( |
086891e5 LP |
671 | int level, |
672 | int error, | |
bcf5c276 | 673 | const char *file, |
086891e5 LP |
674 | int line, |
675 | const char *func, | |
676 | const char *format, | |
677 | va_list ap) { | |
16801e90 | 678 | |
ff524019 | 679 | LogRealm realm = LOG_REALM_REMOVE_LEVEL(level); |
addab137 | 680 | char buffer[LINE_MAX]; |
ff524019 | 681 | PROTECT_ERRNO; |
16801e90 | 682 | |
bf371116 LP |
683 | if (error < 0) |
684 | error = -error; | |
685 | ||
ff524019 | 686 | if (_likely_(LOG_PRI(level) > log_max_level[realm])) |
bf371116 | 687 | return -error; |
16801e90 | 688 | |
086891e5 LP |
689 | /* Make sure that %m maps to the specified error */ |
690 | if (error != 0) | |
bf371116 | 691 | errno = error; |
086891e5 | 692 | |
4ad2b562 | 693 | (void) vsnprintf(buffer, sizeof buffer, format, ap); |
843d2643 | 694 | |
93484b47 | 695 | return log_dispatch_internal(level, error, file, line, func, NULL, NULL, NULL, NULL, buffer); |
185986c6 | 696 | } |
16801e90 | 697 | |
ff524019 | 698 | int log_internal_realm( |
086891e5 LP |
699 | int level, |
700 | int error, | |
bcf5c276 | 701 | const char *file, |
086891e5 LP |
702 | int line, |
703 | const char *func, | |
704 | const char *format, ...) { | |
17a94911 | 705 | |
17a94911 | 706 | va_list ap; |
bf371116 | 707 | int r; |
17a94911 LP |
708 | |
709 | va_start(ap, format); | |
ff524019 | 710 | r = log_internalv_realm(level, error, file, line, func, format, ap); |
17a94911 LP |
711 | va_end(ap); |
712 | ||
713 | return r; | |
714 | } | |
715 | ||
a3bf7137 ZJS |
716 | _printf_(10,0) |
717 | static int log_object_internalv( | |
086891e5 LP |
718 | int level, |
719 | int error, | |
bcf5c276 | 720 | const char *file, |
086891e5 LP |
721 | int line, |
722 | const char *func, | |
723 | const char *object_field, | |
724 | const char *object, | |
4b58153d LP |
725 | const char *extra_field, |
726 | const char *extra, | |
086891e5 LP |
727 | const char *format, |
728 | va_list ap) { | |
fdf9f9bb | 729 | |
5c0aa72a | 730 | PROTECT_ERRNO; |
f2341e0a | 731 | char *buffer, *b; |
fdf9f9bb | 732 | |
bf371116 LP |
733 | if (error < 0) |
734 | error = -error; | |
735 | ||
ff524019 | 736 | if (_likely_(LOG_PRI(level) > log_max_level[LOG_REALM_SYSTEMD])) |
bf371116 | 737 | return -error; |
fdf9f9bb | 738 | |
086891e5 LP |
739 | /* Make sure that %m maps to the specified error */ |
740 | if (error != 0) | |
bf371116 | 741 | errno = error; |
086891e5 | 742 | |
f2341e0a LP |
743 | /* Prepend the object name before the message */ |
744 | if (object) { | |
745 | size_t n; | |
746 | ||
747 | n = strlen(object); | |
1741b25c | 748 | buffer = newa(char, n + 2 + LINE_MAX); |
f2341e0a | 749 | b = stpcpy(stpcpy(buffer, object), ": "); |
1741b25c EV |
750 | } else |
751 | b = buffer = newa(char, LINE_MAX); | |
f2341e0a | 752 | |
4ad2b562 | 753 | (void) vsnprintf(b, LINE_MAX, format, ap); |
fdf9f9bb | 754 | |
93484b47 ZJS |
755 | return log_dispatch_internal(level, error, file, line, func, |
756 | object_field, object, extra_field, extra, buffer); | |
fdf9f9bb ZJS |
757 | } |
758 | ||
79008bdd | 759 | int log_object_internal( |
086891e5 LP |
760 | int level, |
761 | int error, | |
bcf5c276 | 762 | const char *file, |
086891e5 LP |
763 | int line, |
764 | const char *func, | |
765 | const char *object_field, | |
766 | const char *object, | |
4b58153d LP |
767 | const char *extra_field, |
768 | const char *extra, | |
086891e5 | 769 | const char *format, ...) { |
fdf9f9bb | 770 | |
fdf9f9bb | 771 | va_list ap; |
bf371116 | 772 | int r; |
fdf9f9bb ZJS |
773 | |
774 | va_start(ap, format); | |
4b58153d | 775 | r = log_object_internalv(level, error, file, line, func, object_field, object, extra_field, extra, format, ap); |
fdf9f9bb ZJS |
776 | va_end(ap); |
777 | ||
778 | return r; | |
779 | } | |
780 | ||
086891e5 LP |
781 | static void log_assert( |
782 | int level, | |
783 | const char *text, | |
784 | const char *file, | |
785 | int line, | |
786 | const char *func, | |
787 | const char *format) { | |
788 | ||
addab137 | 789 | static char buffer[LINE_MAX]; |
ff524019 | 790 | LogRealm realm = LOG_REALM_REMOVE_LEVEL(level); |
185986c6 | 791 | |
ff524019 | 792 | if (_likely_(LOG_PRI(level) > log_max_level[realm])) |
50f72bca ZJS |
793 | return; |
794 | ||
bcfce235 | 795 | DISABLE_WARNING_FORMAT_NONLITERAL; |
4ad2b562 | 796 | (void) snprintf(buffer, sizeof buffer, format, text, file, line, func); |
bcfce235 | 797 | REENABLE_WARNING; |
185986c6 | 798 | |
185986c6 LP |
799 | log_abort_msg = buffer; |
800 | ||
93484b47 | 801 | log_dispatch_internal(level, 0, file, line, func, NULL, NULL, NULL, NULL, buffer); |
5899f3b7 | 802 | } |
34f0e866 | 803 | |
848e863a | 804 | _noreturn_ void log_assert_failed_realm( |
ff524019 ZJS |
805 | LogRealm realm, |
806 | const char *text, | |
807 | const char *file, | |
808 | int line, | |
809 | const char *func) { | |
ea89a119 | 810 | log_open(); |
ff524019 ZJS |
811 | log_assert(LOG_REALM_PLUS_LEVEL(realm, LOG_CRIT), text, file, line, func, |
812 | "Assertion '%s' failed at %s:%u, function %s(). Aborting."); | |
80514f9c | 813 | abort(); |
b7f33638 MS |
814 | } |
815 | ||
848e863a | 816 | _noreturn_ void log_assert_failed_unreachable_realm( |
ff524019 ZJS |
817 | LogRealm realm, |
818 | const char *text, | |
819 | const char *file, | |
820 | int line, | |
821 | const char *func) { | |
ea89a119 | 822 | log_open(); |
ff524019 ZJS |
823 | log_assert(LOG_REALM_PLUS_LEVEL(realm, LOG_CRIT), text, file, line, func, |
824 | "Code should not be reached '%s' at %s:%u, function %s(). Aborting."); | |
80514f9c LP |
825 | abort(); |
826 | } | |
827 | ||
ff524019 ZJS |
828 | void log_assert_failed_return_realm( |
829 | LogRealm realm, | |
830 | const char *text, | |
831 | const char *file, | |
832 | int line, | |
833 | const char *func) { | |
e5ca092c | 834 | PROTECT_ERRNO; |
ff524019 ZJS |
835 | log_assert(LOG_REALM_PLUS_LEVEL(realm, LOG_DEBUG), text, file, line, func, |
836 | "Assertion '%s' failed at %s:%u, function %s(). Ignoring."); | |
b7f33638 MS |
837 | } |
838 | ||
ff524019 | 839 | int log_oom_internal(LogRealm realm, const char *file, int line, const char *func) { |
7558e10c LP |
840 | return log_internal_realm(LOG_REALM_PLUS_LEVEL(realm, LOG_ERR), |
841 | ENOMEM, file, line, func, "Out of memory."); | |
6dc1e7e0 MS |
842 | } |
843 | ||
8a03c9ef ZJS |
844 | int log_format_iovec( |
845 | struct iovec *iovec, | |
d3070fbd LP |
846 | size_t iovec_len, |
847 | size_t *n, | |
8a03c9ef ZJS |
848 | bool newline_separator, |
849 | int error, | |
850 | const char *format, | |
851 | va_list ap) { | |
852 | ||
853 | static const char nl = '\n'; | |
854 | ||
855 | while (format && *n + 1 < iovec_len) { | |
856 | va_list aq; | |
857 | char *m; | |
858 | int r; | |
859 | ||
860 | /* We need to copy the va_list structure, | |
861 | * since vasprintf() leaves it afterwards at | |
862 | * an undefined location */ | |
863 | ||
864 | if (error != 0) | |
865 | errno = error; | |
866 | ||
867 | va_copy(aq, ap); | |
868 | r = vasprintf(&m, format, aq); | |
869 | va_end(aq); | |
870 | if (r < 0) | |
871 | return -EINVAL; | |
872 | ||
873 | /* Now, jump enough ahead, so that we point to | |
874 | * the next format string */ | |
875 | VA_FORMAT_ADVANCE(format, ap); | |
876 | ||
e6a7ec4b | 877 | iovec[(*n)++] = IOVEC_MAKE_STRING(m); |
8a03c9ef ZJS |
878 | |
879 | if (newline_separator) { | |
880 | iovec[*n].iov_base = (char*) &nl; | |
881 | iovec[*n].iov_len = 1; | |
882 | (*n)++; | |
883 | } | |
884 | ||
885 | format = va_arg(ap, char *); | |
886 | } | |
887 | return 0; | |
888 | } | |
889 | ||
877d54e9 LP |
890 | int log_struct_internal( |
891 | int level, | |
086891e5 | 892 | int error, |
877d54e9 LP |
893 | const char *file, |
894 | int line, | |
895 | const char *func, | |
896 | const char *format, ...) { | |
897 | ||
e6a7ec4b | 898 | LogRealm realm = LOG_REALM_REMOVE_LEVEL(level); |
bf371116 LP |
899 | char buf[LINE_MAX]; |
900 | bool found = false; | |
5c0aa72a | 901 | PROTECT_ERRNO; |
877d54e9 | 902 | va_list ap; |
bf371116 LP |
903 | |
904 | if (error < 0) | |
905 | error = -error; | |
877d54e9 | 906 | |
ff524019 | 907 | if (_likely_(LOG_PRI(level) > log_max_level[realm])) |
bf371116 | 908 | return -error; |
877d54e9 LP |
909 | |
910 | if (log_target == LOG_TARGET_NULL) | |
bf371116 | 911 | return -error; |
877d54e9 LP |
912 | |
913 | if ((level & LOG_FACMASK) == 0) | |
914 | level = log_facility | LOG_PRI(level); | |
915 | ||
16e4fd87 LP |
916 | if (IN_SET(log_target, |
917 | LOG_TARGET_AUTO, | |
918 | LOG_TARGET_JOURNAL_OR_KMSG, | |
919 | LOG_TARGET_JOURNAL)) { | |
920 | ||
921 | if (open_when_needed) | |
922 | log_open_journal(); | |
923 | ||
924 | if (journal_fd >= 0) { | |
925 | char header[LINE_MAX]; | |
926 | struct iovec iovec[17] = {}; | |
d3070fbd | 927 | size_t n = 0, i; |
16e4fd87 LP |
928 | int r; |
929 | struct msghdr mh = { | |
930 | .msg_iov = iovec, | |
931 | }; | |
932 | bool fallback = false; | |
933 | ||
934 | /* If the journal is available do structured logging */ | |
935 | log_do_header(header, sizeof(header), level, error, file, line, func, NULL, NULL, NULL, NULL); | |
936 | iovec[n++] = IOVEC_MAKE_STRING(header); | |
937 | ||
938 | va_start(ap, format); | |
939 | r = log_format_iovec(iovec, ELEMENTSOF(iovec), &n, true, error, format, ap); | |
940 | if (r < 0) | |
941 | fallback = true; | |
942 | else { | |
943 | mh.msg_iovlen = n; | |
944 | (void) sendmsg(journal_fd, &mh, MSG_NOSIGNAL); | |
945 | } | |
877d54e9 | 946 | |
16e4fd87 LP |
947 | va_end(ap); |
948 | for (i = 1; i < n; i += 2) | |
949 | free(iovec[i].iov_base); | |
877d54e9 | 950 | |
16e4fd87 LP |
951 | if (!fallback) { |
952 | if (open_when_needed) | |
953 | log_close(); | |
877d54e9 | 954 | |
16e4fd87 LP |
955 | return -error; |
956 | } | |
957 | } | |
bf371116 | 958 | } |
877d54e9 | 959 | |
bf371116 | 960 | /* Fallback if journal logging is not available or didn't work. */ |
6357ac66 | 961 | |
bf371116 LP |
962 | va_start(ap, format); |
963 | while (format) { | |
964 | va_list aq; | |
877d54e9 | 965 | |
bf371116 LP |
966 | if (error != 0) |
967 | errno = error; | |
877d54e9 | 968 | |
bf371116 | 969 | va_copy(aq, ap); |
4ad2b562 | 970 | (void) vsnprintf(buf, sizeof buf, format, aq); |
bf371116 | 971 | va_end(aq); |
963ddb91 | 972 | |
bf371116 LP |
973 | if (startswith(buf, "MESSAGE=")) { |
974 | found = true; | |
975 | break; | |
877d54e9 | 976 | } |
877d54e9 | 977 | |
bf371116 LP |
978 | VA_FORMAT_ADVANCE(format, ap); |
979 | ||
980 | format = va_arg(ap, char *); | |
877d54e9 | 981 | } |
bf371116 | 982 | va_end(ap); |
877d54e9 | 983 | |
16e4fd87 LP |
984 | if (!found) { |
985 | if (open_when_needed) | |
986 | log_close(); | |
987 | ||
bf371116 | 988 | return -error; |
16e4fd87 | 989 | } |
bf371116 | 990 | |
93484b47 | 991 | return log_dispatch_internal(level, error, file, line, func, NULL, NULL, NULL, NULL, buf + 8); |
877d54e9 LP |
992 | } |
993 | ||
915b1d01 LP |
994 | int log_struct_iovec_internal( |
995 | int level, | |
996 | int error, | |
997 | const char *file, | |
998 | int line, | |
999 | const char *func, | |
1000 | const struct iovec input_iovec[], | |
1001 | size_t n_input_iovec) { | |
1002 | ||
1003 | LogRealm realm = LOG_REALM_REMOVE_LEVEL(level); | |
1004 | PROTECT_ERRNO; | |
1005 | size_t i; | |
1006 | char *m; | |
1007 | ||
1008 | if (error < 0) | |
1009 | error = -error; | |
1010 | ||
1011 | if (_likely_(LOG_PRI(level) > log_max_level[realm])) | |
1012 | return -error; | |
1013 | ||
1014 | if (log_target == LOG_TARGET_NULL) | |
1015 | return -error; | |
1016 | ||
1017 | if ((level & LOG_FACMASK) == 0) | |
1018 | level = log_facility | LOG_PRI(level); | |
1019 | ||
1020 | if (IN_SET(log_target, LOG_TARGET_AUTO, | |
1021 | LOG_TARGET_JOURNAL_OR_KMSG, | |
1022 | LOG_TARGET_JOURNAL) && | |
1023 | journal_fd >= 0) { | |
1024 | ||
1025 | struct iovec iovec[1 + n_input_iovec*2]; | |
1026 | char header[LINE_MAX]; | |
1027 | struct msghdr mh = { | |
1028 | .msg_iov = iovec, | |
1029 | .msg_iovlen = 1 + n_input_iovec*2, | |
1030 | }; | |
1031 | ||
1032 | log_do_header(header, sizeof(header), level, error, file, line, func, NULL, NULL, NULL, NULL); | |
1033 | iovec[0] = IOVEC_MAKE_STRING(header); | |
1034 | ||
1035 | for (i = 0; i < n_input_iovec; i++) { | |
1036 | iovec[1+i*2] = input_iovec[i]; | |
1037 | iovec[1+i*2+1] = IOVEC_MAKE_STRING("\n"); | |
1038 | } | |
1039 | ||
1040 | if (sendmsg(journal_fd, &mh, MSG_NOSIGNAL) >= 0) | |
40056777 | 1041 | return -error; |
915b1d01 LP |
1042 | } |
1043 | ||
1044 | for (i = 0; i < n_input_iovec; i++) { | |
fbd0b64f | 1045 | if (input_iovec[i].iov_len < STRLEN("MESSAGE=")) |
915b1d01 LP |
1046 | continue; |
1047 | ||
fbd0b64f | 1048 | if (memcmp(input_iovec[i].iov_base, "MESSAGE=", STRLEN("MESSAGE=")) == 0) |
915b1d01 LP |
1049 | break; |
1050 | } | |
1051 | ||
1052 | if (_unlikely_(i >= n_input_iovec)) /* Couldn't find MESSAGE=? */ | |
1053 | return -error; | |
1054 | ||
fbd0b64f LP |
1055 | m = strndupa(input_iovec[i].iov_base + STRLEN("MESSAGE="), |
1056 | input_iovec[i].iov_len - STRLEN("MESSAGE=")); | |
915b1d01 LP |
1057 | |
1058 | return log_dispatch_internal(level, error, file, line, func, NULL, NULL, NULL, NULL, m); | |
1059 | } | |
1060 | ||
34f0e866 LP |
1061 | int log_set_target_from_string(const char *e) { |
1062 | LogTarget t; | |
1063 | ||
5ba081b0 LP |
1064 | t = log_target_from_string(e); |
1065 | if (t < 0) | |
34f0e866 LP |
1066 | return -EINVAL; |
1067 | ||
1068 | log_set_target(t); | |
1069 | return 0; | |
1070 | } | |
1071 | ||
ff524019 | 1072 | int log_set_max_level_from_string_realm(LogRealm realm, const char *e) { |
34f0e866 LP |
1073 | int t; |
1074 | ||
5ba081b0 LP |
1075 | t = log_level_from_string(e); |
1076 | if (t < 0) | |
737af734 | 1077 | return -EINVAL; |
34f0e866 | 1078 | |
ff524019 | 1079 | log_set_max_level_realm(realm, t); |
34f0e866 LP |
1080 | return 0; |
1081 | } | |
1082 | ||
96287a49 | 1083 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
1de1c9c3 LP |
1084 | |
1085 | /* | |
1086 | * The systemd.log_xyz= settings are parsed by all tools, and | |
1087 | * so is "debug". | |
1088 | * | |
5e07a79e LP |
1089 | * However, "quiet" is only parsed by PID 1, and only turns of |
1090 | * status output to /dev/console, but does not alter the log | |
1091 | * level. | |
1de1c9c3 LP |
1092 | */ |
1093 | ||
1094 | if (streq(key, "debug") && !value) | |
1095 | log_set_max_level(LOG_DEBUG); | |
1096 | ||
1d84ad94 LP |
1097 | else if (proc_cmdline_key_streq(key, "systemd.log_target")) { |
1098 | ||
1099 | if (proc_cmdline_value_missing(key, value)) | |
1100 | return 0; | |
1de1c9c3 LP |
1101 | |
1102 | if (log_set_target_from_string(value) < 0) | |
1103 | log_warning("Failed to parse log target '%s'. Ignoring.", value); | |
1104 | ||
1d84ad94 LP |
1105 | } else if (proc_cmdline_key_streq(key, "systemd.log_level")) { |
1106 | ||
1107 | if (proc_cmdline_value_missing(key, value)) | |
1108 | return 0; | |
1de1c9c3 LP |
1109 | |
1110 | if (log_set_max_level_from_string(value) < 0) | |
1111 | log_warning("Failed to parse log level '%s'. Ignoring.", value); | |
1112 | ||
1d84ad94 | 1113 | } else if (proc_cmdline_key_streq(key, "systemd.log_color")) { |
1de1c9c3 | 1114 | |
1d84ad94 | 1115 | if (log_show_color_from_string(value ?: "1") < 0) |
1de1c9c3 LP |
1116 | log_warning("Failed to parse log color setting '%s'. Ignoring.", value); |
1117 | ||
1d84ad94 | 1118 | } else if (proc_cmdline_key_streq(key, "systemd.log_location")) { |
1de1c9c3 | 1119 | |
1d84ad94 | 1120 | if (log_show_location_from_string(value ?: "1") < 0) |
1de1c9c3 LP |
1121 | log_warning("Failed to parse log location setting '%s'. Ignoring.", value); |
1122 | } | |
1123 | ||
1124 | return 0; | |
1125 | } | |
1126 | ||
ff524019 | 1127 | void log_parse_environment_realm(LogRealm realm) { |
e3e42fc2 ZJS |
1128 | /* Do not call from library code. */ |
1129 | ||
34f0e866 | 1130 | const char *e; |
b8d0ffc2 | 1131 | |
ee46e555 | 1132 | if (get_ctty_devnr(0, NULL) < 0) |
1d84ad94 LP |
1133 | /* Only try to read the command line in daemons. We assume that anything that has a controlling tty is |
1134 | user stuff. */ | |
1135 | (void) proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_STRIP_RD_PREFIX); | |
34f0e866 | 1136 | |
a99e002c | 1137 | e = getenv("SYSTEMD_LOG_TARGET"); |
88fae6e0 | 1138 | if (e && log_set_target_from_string(e) < 0) |
f0ea29ea | 1139 | log_warning("Failed to parse log target '%s'. Ignoring.", e); |
34f0e866 | 1140 | |
a99e002c | 1141 | e = getenv("SYSTEMD_LOG_LEVEL"); |
ff524019 | 1142 | if (e && log_set_max_level_from_string_realm(realm, e) < 0) |
f0ea29ea | 1143 | log_warning("Failed to parse log level '%s'. Ignoring.", e); |
bbe63281 | 1144 | |
a99e002c | 1145 | e = getenv("SYSTEMD_LOG_COLOR"); |
88fae6e0 | 1146 | if (e && log_show_color_from_string(e) < 0) |
f0ea29ea | 1147 | log_warning("Failed to parse bool '%s'. Ignoring.", e); |
bbe63281 | 1148 | |
a99e002c | 1149 | e = getenv("SYSTEMD_LOG_LOCATION"); |
88fae6e0 | 1150 | if (e && log_show_location_from_string(e) < 0) |
f0ea29ea | 1151 | log_warning("Failed to parse bool '%s'. Ignoring.", e); |
34f0e866 LP |
1152 | } |
1153 | ||
1adf1049 LP |
1154 | LogTarget log_get_target(void) { |
1155 | return log_target; | |
1156 | } | |
1157 | ||
ff524019 ZJS |
1158 | int log_get_max_level_realm(LogRealm realm) { |
1159 | return log_max_level[realm]; | |
1adf1049 LP |
1160 | } |
1161 | ||
bbe63281 LP |
1162 | void log_show_color(bool b) { |
1163 | show_color = b; | |
1164 | } | |
1165 | ||
b1e90ec5 ZJS |
1166 | bool log_get_show_color(void) { |
1167 | return show_color; | |
1168 | } | |
1169 | ||
bbe63281 LP |
1170 | void log_show_location(bool b) { |
1171 | show_location = b; | |
1172 | } | |
1173 | ||
b1e90ec5 ZJS |
1174 | bool log_get_show_location(void) { |
1175 | return show_location; | |
1176 | } | |
1177 | ||
bbe63281 LP |
1178 | int log_show_color_from_string(const char *e) { |
1179 | int t; | |
1180 | ||
5ba081b0 LP |
1181 | t = parse_boolean(e); |
1182 | if (t < 0) | |
1183 | return t; | |
bbe63281 LP |
1184 | |
1185 | log_show_color(t); | |
1186 | return 0; | |
1187 | } | |
1188 | ||
1189 | int log_show_location_from_string(const char *e) { | |
1190 | int t; | |
1191 | ||
5ba081b0 LP |
1192 | t = parse_boolean(e); |
1193 | if (t < 0) | |
1194 | return t; | |
bbe63281 LP |
1195 | |
1196 | log_show_location(t); | |
1197 | return 0; | |
1198 | } | |
1199 | ||
81270860 | 1200 | bool log_on_console(void) { |
5b5688af ZJS |
1201 | if (IN_SET(log_target, LOG_TARGET_CONSOLE, |
1202 | LOG_TARGET_CONSOLE_PREFIXED)) | |
81270860 LP |
1203 | return true; |
1204 | ||
1205 | return syslog_fd < 0 && kmsg_fd < 0 && journal_fd < 0; | |
1206 | } | |
1207 | ||
2c5859af | 1208 | static const char *const log_target_table[_LOG_TARGET_MAX] = { |
34f0e866 | 1209 | [LOG_TARGET_CONSOLE] = "console", |
aca83a53 | 1210 | [LOG_TARGET_CONSOLE_PREFIXED] = "console-prefixed", |
34f0e866 | 1211 | [LOG_TARGET_KMSG] = "kmsg", |
5ba081b0 LP |
1212 | [LOG_TARGET_JOURNAL] = "journal", |
1213 | [LOG_TARGET_JOURNAL_OR_KMSG] = "journal-or-kmsg", | |
1214 | [LOG_TARGET_SYSLOG] = "syslog", | |
843d2643 | 1215 | [LOG_TARGET_SYSLOG_OR_KMSG] = "syslog-or-kmsg", |
5ba081b0 | 1216 | [LOG_TARGET_AUTO] = "auto", |
6c347d50 | 1217 | [LOG_TARGET_NULL] = "null", |
34f0e866 LP |
1218 | }; |
1219 | ||
1220 | DEFINE_STRING_TABLE_LOOKUP(log_target, LogTarget); | |
4daf54a8 ZJS |
1221 | |
1222 | void log_received_signal(int level, const struct signalfd_siginfo *si) { | |
a6ab2365 LP |
1223 | assert(si); |
1224 | ||
1225 | if (pid_is_valid(si->ssi_pid)) { | |
4daf54a8 ZJS |
1226 | _cleanup_free_ char *p = NULL; |
1227 | ||
a6ab2365 | 1228 | (void) get_process_comm(si->ssi_pid, &p); |
4daf54a8 ZJS |
1229 | |
1230 | log_full(level, | |
1fa2f38f | 1231 | "Received SIG%s from PID %"PRIu32" (%s).", |
4daf54a8 ZJS |
1232 | signal_to_string(si->ssi_signo), |
1233 | si->ssi_pid, strna(p)); | |
1234 | } else | |
1235 | log_full(level, | |
1236 | "Received SIG%s.", | |
1237 | signal_to_string(si->ssi_signo)); | |
4daf54a8 | 1238 | } |
c1dc6153 | 1239 | |
158350e8 LP |
1240 | int log_syntax_internal( |
1241 | const char *unit, | |
1242 | int level, | |
1243 | const char *config_file, | |
1244 | unsigned config_line, | |
1245 | int error, | |
1246 | const char *file, | |
1247 | int line, | |
1248 | const char *func, | |
1249 | const char *format, ...) { | |
1250 | ||
1251 | PROTECT_ERRNO; | |
1252 | char buffer[LINE_MAX]; | |
158350e8 | 1253 | va_list ap; |
c2dec702 | 1254 | const char *unit_fmt = NULL; |
158350e8 LP |
1255 | |
1256 | if (error < 0) | |
1257 | error = -error; | |
1258 | ||
ff524019 | 1259 | if (_likely_(LOG_PRI(level) > log_max_level[LOG_REALM_SYSTEMD])) |
158350e8 LP |
1260 | return -error; |
1261 | ||
1262 | if (log_target == LOG_TARGET_NULL) | |
1263 | return -error; | |
1264 | ||
1265 | if (error != 0) | |
1266 | errno = error; | |
1267 | ||
1268 | va_start(ap, format); | |
4ad2b562 | 1269 | (void) vsnprintf(buffer, sizeof buffer, format, ap); |
158350e8 LP |
1270 | va_end(ap); |
1271 | ||
1272 | if (unit) | |
df0ff127 | 1273 | unit_fmt = getpid_cached() == 1 ? "UNIT=%s" : "USER_UNIT=%s"; |
c2dec702 ZJS |
1274 | |
1275 | return log_struct_internal( | |
ff524019 ZJS |
1276 | LOG_REALM_PLUS_LEVEL(LOG_REALM_SYSTEMD, level), |
1277 | error, | |
c2dec702 | 1278 | file, line, func, |
2b044526 | 1279 | "MESSAGE_ID=" SD_MESSAGE_INVALID_CONFIGURATION_STR, |
c2dec702 ZJS |
1280 | "CONFIG_FILE=%s", config_file, |
1281 | "CONFIG_LINE=%u", config_line, | |
e697dfef | 1282 | LOG_MESSAGE("%s:%u: %s", config_file, config_line, buffer), |
c2dec702 ZJS |
1283 | unit_fmt, unit, |
1284 | NULL); | |
158350e8 | 1285 | } |
48a601fe | 1286 | |
d04ce5a9 LP |
1287 | int log_syntax_invalid_utf8_internal( |
1288 | const char *unit, | |
1289 | int level, | |
1290 | const char *config_file, | |
1291 | unsigned config_line, | |
1292 | const char *file, | |
1293 | int line, | |
1294 | const char *func, | |
1295 | const char *rvalue) { | |
1296 | ||
1297 | _cleanup_free_ char *p = NULL; | |
1298 | ||
1299 | if (rvalue) | |
1300 | p = utf8_escape_invalid(rvalue); | |
1301 | ||
1302 | log_syntax_internal(unit, level, config_file, config_line, 0, file, line, func, | |
1303 | "String is not UTF-8 clean, ignoring assignment: %s", strna(p)); | |
1304 | ||
1305 | return -EINVAL; | |
1306 | } | |
1307 | ||
16e4fd87 LP |
1308 | void log_set_upgrade_syslog_to_journal(bool b) { |
1309 | upgrade_syslog_to_journal = b; | |
6fdb8de4 LP |
1310 | |
1311 | /* Make the change effective immediately */ | |
1312 | if (b) { | |
1313 | if (log_target == LOG_TARGET_SYSLOG) | |
1314 | log_target = LOG_TARGET_JOURNAL; | |
1315 | else if (log_target == LOG_TARGET_SYSLOG_OR_KMSG) | |
1316 | log_target = LOG_TARGET_JOURNAL_OR_KMSG; | |
1317 | } | |
16e4fd87 LP |
1318 | } |
1319 | ||
48a601fe LP |
1320 | void log_set_always_reopen_console(bool b) { |
1321 | always_reopen_console = b; | |
1322 | } | |
16e4fd87 LP |
1323 | |
1324 | void log_set_open_when_needed(bool b) { | |
1325 | open_when_needed = b; | |
1326 | } | |
dccca82b | 1327 | |
adf47c91 LP |
1328 | void log_set_prohibit_ipc(bool b) { |
1329 | prohibit_ipc = b; | |
1330 | } | |
1331 | ||
dccca82b LP |
1332 | int log_emergency_level(void) { |
1333 | /* Returns the log level to use for log_emergency() logging. We use LOG_EMERG only when we are PID 1, as only | |
1334 | * then the system of the whole system is obviously affected. */ | |
1335 | ||
1336 | return getpid_cached() == 1 ? LOG_EMERG : LOG_ERR; | |
1337 | } |