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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
875c2e22 | 2 | |
b5efdb8a | 3 | #include "alloc-util.h" |
07630cea | 4 | #include "audit-type.h" |
3ffd4af2 | 5 | #include "fd-util.h" |
afc5dbf3 LP |
6 | #include "hexdecoct.h" |
7 | #include "io-util.h" | |
3ffd4af2 | 8 | #include "journald-audit.h" |
875c2e22 | 9 | #include "missing.h" |
07630cea | 10 | #include "string-util.h" |
875c2e22 LP |
11 | |
12 | typedef struct MapField { | |
13 | const char *audit_field; | |
14 | const char *journal_field; | |
d3070fbd | 15 | int (*map)(const char *field, const char **p, struct iovec **iov, size_t *n_iov_allocated, size_t *n_iov); |
875c2e22 LP |
16 | } MapField; |
17 | ||
d3070fbd | 18 | static int map_simple_field(const char *field, const char **p, struct iovec **iov, size_t *n_iov_allocated, size_t *n_iov) { |
875c2e22 LP |
19 | _cleanup_free_ char *c = NULL; |
20 | size_t l = 0, allocated = 0; | |
21 | const char *e; | |
22 | ||
23 | assert(field); | |
24 | assert(p); | |
25 | assert(iov); | |
26 | assert(n_iov); | |
27 | ||
28 | l = strlen(field); | |
29 | allocated = l + 1; | |
30 | c = malloc(allocated); | |
31 | if (!c) | |
32 | return -ENOMEM; | |
33 | ||
34 | memcpy(c, field, l); | |
4c701096 | 35 | for (e = *p; !IN_SET(*e, 0, ' '); e++) { |
875c2e22 LP |
36 | if (!GREEDY_REALLOC(c, allocated, l+2)) |
37 | return -ENOMEM; | |
38 | ||
39 | c[l++] = *e; | |
40 | } | |
41 | ||
42 | c[l] = 0; | |
43 | ||
44 | if (!GREEDY_REALLOC(*iov, *n_iov_allocated, *n_iov + 1)) | |
45 | return -ENOMEM; | |
46 | ||
dde26374 | 47 | (*iov)[(*n_iov)++] = IOVEC_MAKE(c, l); |
875c2e22 LP |
48 | |
49 | *p = e; | |
50 | c = NULL; | |
51 | ||
52 | return 1; | |
53 | } | |
54 | ||
d3070fbd | 55 | static int map_string_field_internal(const char *field, const char **p, struct iovec **iov, size_t *n_iov_allocated, size_t *n_iov, bool filter_printable) { |
875c2e22 LP |
56 | _cleanup_free_ char *c = NULL; |
57 | const char *s, *e; | |
58 | size_t l; | |
59 | ||
60 | assert(field); | |
61 | assert(p); | |
62 | assert(iov); | |
63 | assert(n_iov); | |
64 | ||
65 | /* The kernel formats string fields in one of two formats. */ | |
66 | ||
67 | if (**p == '"') { | |
68 | /* Normal quoted syntax */ | |
69 | s = *p + 1; | |
70 | e = strchr(s, '"'); | |
71 | if (!e) | |
72 | return 0; | |
73 | ||
74 | l = strlen(field) + (e - s); | |
75 | c = malloc(l+1); | |
76 | if (!c) | |
77 | return -ENOMEM; | |
78 | ||
79 | *((char*) mempcpy(stpcpy(c, field), s, e - s)) = 0; | |
80 | ||
81 | e += 1; | |
82 | ||
83 | } else if (unhexchar(**p) >= 0) { | |
84 | /* Hexadecimal escaping */ | |
85 | size_t allocated = 0; | |
86 | ||
87 | l = strlen(field); | |
88 | allocated = l + 2; | |
89 | c = malloc(allocated); | |
90 | if (!c) | |
91 | return -ENOMEM; | |
92 | ||
93 | memcpy(c, field, l); | |
4c701096 | 94 | for (e = *p; !IN_SET(*e, 0, ' '); e += 2) { |
875c2e22 | 95 | int a, b; |
78fe420f | 96 | uint8_t x; |
875c2e22 LP |
97 | |
98 | a = unhexchar(e[0]); | |
99 | if (a < 0) | |
100 | return 0; | |
101 | ||
102 | b = unhexchar(e[1]); | |
103 | if (b < 0) | |
104 | return 0; | |
105 | ||
78fe420f LP |
106 | x = ((uint8_t) a << 4 | (uint8_t) b); |
107 | ||
108 | if (filter_printable && x < (uint8_t) ' ') | |
109 | x = (uint8_t) ' '; | |
110 | ||
875c2e22 LP |
111 | if (!GREEDY_REALLOC(c, allocated, l+2)) |
112 | return -ENOMEM; | |
113 | ||
78fe420f | 114 | c[l++] = (char) x; |
875c2e22 LP |
115 | } |
116 | ||
117 | c[l] = 0; | |
118 | } else | |
119 | return 0; | |
120 | ||
121 | if (!GREEDY_REALLOC(*iov, *n_iov_allocated, *n_iov + 1)) | |
122 | return -ENOMEM; | |
123 | ||
dde26374 | 124 | (*iov)[(*n_iov)++] = IOVEC_MAKE(c, l); |
875c2e22 LP |
125 | |
126 | *p = e; | |
127 | c = NULL; | |
128 | ||
129 | return 1; | |
130 | } | |
131 | ||
d3070fbd | 132 | static int map_string_field(const char *field, const char **p, struct iovec **iov, size_t *n_iov_allocated, size_t *n_iov) { |
78fe420f LP |
133 | return map_string_field_internal(field, p, iov, n_iov_allocated, n_iov, false); |
134 | } | |
135 | ||
d3070fbd | 136 | static int map_string_field_printable(const char *field, const char **p, struct iovec **iov, size_t *n_iov_allocated, size_t *n_iov) { |
78fe420f LP |
137 | return map_string_field_internal(field, p, iov, n_iov_allocated, n_iov, true); |
138 | } | |
139 | ||
d3070fbd | 140 | static int map_generic_field(const char *prefix, const char **p, struct iovec **iov, size_t *n_iov_allocated, size_t *n_iov) { |
875c2e22 LP |
141 | const char *e, *f; |
142 | char *c, *t; | |
143 | int r; | |
144 | ||
145 | /* Implements fallback mappings for all fields we don't know */ | |
146 | ||
147 | for (e = *p; e < *p + 16; e++) { | |
148 | ||
4c701096 | 149 | if (IN_SET(*e, 0, ' ')) |
875c2e22 LP |
150 | return 0; |
151 | ||
152 | if (*e == '=') | |
153 | break; | |
154 | ||
155 | if (!((*e >= 'a' && *e <= 'z') || | |
156 | (*e >= 'A' && *e <= 'Z') || | |
157 | (*e >= '0' && *e <= '9') || | |
4c701096 | 158 | IN_SET(*e, '_', '-'))) |
875c2e22 LP |
159 | return 0; |
160 | } | |
161 | ||
162 | if (e <= *p || e >= *p + 16) | |
163 | return 0; | |
164 | ||
165 | c = alloca(strlen(prefix) + (e - *p) + 2); | |
166 | ||
167 | t = stpcpy(c, prefix); | |
9833a66c LP |
168 | for (f = *p; f < e; f++) { |
169 | char x; | |
170 | ||
171 | if (*f >= 'a' && *f <= 'z') | |
172 | x = (*f - 'a') + 'A'; /* uppercase */ | |
173 | else if (*f == '-') | |
174 | x = '_'; /* dashes → underscores */ | |
175 | else | |
176 | x = *f; | |
177 | ||
178 | *(t++) = x; | |
179 | } | |
875c2e22 LP |
180 | strcpy(t, "="); |
181 | ||
313cefa1 | 182 | e++; |
875c2e22 LP |
183 | |
184 | r = map_simple_field(c, &e, iov, n_iov_allocated, n_iov); | |
185 | if (r < 0) | |
186 | return r; | |
187 | ||
188 | *p = e; | |
189 | return r; | |
190 | } | |
191 | ||
f131770b | 192 | /* Kernel fields are those occurring in the audit string before |
875c2e22 LP |
193 | * msg='. All of these fields are trusted, hence carry the "_" prefix. |
194 | * We try to translate the fields we know into our native names. The | |
195 | * other's are generically mapped to _AUDIT_FIELD_XYZ= */ | |
196 | static const MapField map_fields_kernel[] = { | |
197 | ||
198 | /* First, we map certain well-known audit fields into native | |
199 | * well-known fields */ | |
500cbc4e LP |
200 | { "pid=", "_PID=", map_simple_field }, |
201 | { "ppid=", "_PPID=", map_simple_field }, | |
202 | { "uid=", "_UID=", map_simple_field }, | |
203 | { "euid=", "_EUID=", map_simple_field }, | |
204 | { "fsuid=", "_FSUID=", map_simple_field }, | |
205 | { "gid=", "_GID=", map_simple_field }, | |
206 | { "egid=", "_EGID=", map_simple_field }, | |
207 | { "fsgid=", "_FSGID=", map_simple_field }, | |
208 | { "tty=", "_TTY=", map_simple_field }, | |
209 | { "ses=", "_AUDIT_SESSION=", map_simple_field }, | |
210 | { "auid=", "_AUDIT_LOGINUID=", map_simple_field }, | |
211 | { "subj=", "_SELINUX_CONTEXT=", map_simple_field }, | |
212 | { "comm=", "_COMM=", map_string_field }, | |
213 | { "exe=", "_EXE=", map_string_field }, | |
214 | { "proctitle=", "_CMDLINE=", map_string_field_printable }, | |
875c2e22 LP |
215 | |
216 | /* Some fields don't map to native well-known fields. However, | |
217 | * we know that they are string fields, hence let's undo | |
218 | * string field escaping for them, though we stick to the | |
219 | * generic field names. */ | |
500cbc4e LP |
220 | { "path=", "_AUDIT_FIELD_PATH=", map_string_field }, |
221 | { "dev=", "_AUDIT_FIELD_DEV=", map_string_field }, | |
222 | { "name=", "_AUDIT_FIELD_NAME=", map_string_field }, | |
875c2e22 LP |
223 | {} |
224 | }; | |
225 | ||
f131770b | 226 | /* Userspace fields are those occurring in the audit string after |
875c2e22 LP |
227 | * msg='. All of these fields are untrusted, hence carry no "_" |
228 | * prefix. We map the fields we don't know to AUDIT_FIELD_XYZ= */ | |
229 | static const MapField map_fields_userspace[] = { | |
500cbc4e LP |
230 | { "cwd=", "AUDIT_FIELD_CWD=", map_string_field }, |
231 | { "cmd=", "AUDIT_FIELD_CMD=", map_string_field }, | |
232 | { "acct=", "AUDIT_FIELD_ACCT=", map_string_field }, | |
233 | { "exe=", "AUDIT_FIELD_EXE=", map_string_field }, | |
234 | { "comm=", "AUDIT_FIELD_COMM=", map_string_field }, | |
875c2e22 LP |
235 | {} |
236 | }; | |
237 | ||
238 | static int map_all_fields( | |
239 | const char *p, | |
240 | const MapField map_fields[], | |
241 | const char *prefix, | |
242 | bool handle_msg, | |
243 | struct iovec **iov, | |
244 | size_t *n_iov_allocated, | |
d3070fbd | 245 | size_t *n_iov) { |
875c2e22 LP |
246 | |
247 | int r; | |
248 | ||
249 | assert(p); | |
250 | assert(iov); | |
251 | assert(n_iov_allocated); | |
252 | assert(n_iov); | |
253 | ||
254 | for (;;) { | |
255 | bool mapped = false; | |
256 | const MapField *m; | |
257 | const char *v; | |
258 | ||
259 | p += strspn(p, WHITESPACE); | |
260 | ||
261 | if (*p == 0) | |
262 | return 0; | |
263 | ||
264 | if (handle_msg) { | |
265 | v = startswith(p, "msg='"); | |
266 | if (v) { | |
267 | const char *e; | |
268 | char *c; | |
269 | ||
270 | /* Userspace message. It's enclosed in | |
271 | simple quotation marks, is not | |
272 | escaped, but the last field in the | |
273 | line, hence let's remove the | |
274 | quotation mark, and apply the | |
275 | userspace mapping instead of the | |
276 | kernel mapping. */ | |
277 | ||
278 | e = endswith(v, "'"); | |
279 | if (!e) | |
280 | return 0; /* don't continue splitting up if the final quotation mark is missing */ | |
281 | ||
282 | c = strndupa(v, e - v); | |
283 | return map_all_fields(c, map_fields_userspace, "AUDIT_FIELD_", false, iov, n_iov_allocated, n_iov); | |
284 | } | |
285 | } | |
286 | ||
287 | /* Try to map the kernel fields to our own names */ | |
288 | for (m = map_fields; m->audit_field; m++) { | |
289 | v = startswith(p, m->audit_field); | |
290 | if (!v) | |
291 | continue; | |
292 | ||
293 | r = m->map(m->journal_field, &v, iov, n_iov_allocated, n_iov); | |
23bbb0de MS |
294 | if (r < 0) |
295 | return log_debug_errno(r, "Failed to parse audit array: %m"); | |
875c2e22 LP |
296 | |
297 | if (r > 0) { | |
298 | mapped = true; | |
299 | p = v; | |
300 | break; | |
301 | } | |
302 | } | |
303 | ||
304 | if (!mapped) { | |
305 | r = map_generic_field(prefix, &p, iov, n_iov_allocated, n_iov); | |
23bbb0de MS |
306 | if (r < 0) |
307 | return log_debug_errno(r, "Failed to parse audit array: %m"); | |
875c2e22 | 308 | |
ece174c5 | 309 | if (r == 0) |
875c2e22 LP |
310 | /* Couldn't process as generic field, let's just skip over it */ |
311 | p += strcspn(p, WHITESPACE); | |
875c2e22 LP |
312 | } |
313 | } | |
314 | } | |
315 | ||
0b97208d | 316 | static void process_audit_string(Server *s, int type, const char *data, size_t size) { |
d3070fbd | 317 | size_t n_iov_allocated = 0, n_iov = 0, z; |
875c2e22 | 318 | _cleanup_free_ struct iovec *iov = NULL; |
875c2e22 | 319 | uint64_t seconds, msec, id; |
8bb3626d | 320 | const char *p, *type_name; |
875c2e22 LP |
321 | char id_field[sizeof("_AUDIT_ID=") + DECIMAL_STR_MAX(uint64_t)], |
322 | type_field[sizeof("_AUDIT_TYPE=") + DECIMAL_STR_MAX(int)], | |
323 | source_time_field[sizeof("_SOURCE_REALTIME_TIMESTAMP=") + DECIMAL_STR_MAX(usec_t)]; | |
25b3245f | 324 | char *m; |
d3070fbd | 325 | int k; |
875c2e22 LP |
326 | |
327 | assert(s); | |
328 | ||
329 | if (size <= 0) | |
330 | return; | |
331 | ||
332 | if (!data) | |
333 | return; | |
334 | ||
335 | /* Note that the input buffer is NUL terminated, but let's | |
336 | * check whether there is a spurious NUL byte */ | |
337 | if (memchr(data, 0, size)) | |
338 | return; | |
339 | ||
340 | p = startswith(data, "audit"); | |
341 | if (!p) | |
342 | return; | |
343 | ||
1fa2f38f | 344 | if (sscanf(p, "(%" PRIu64 ".%" PRIu64 ":%" PRIu64 "):%n", |
875c2e22 LP |
345 | &seconds, |
346 | &msec, | |
347 | &id, | |
348 | &k) != 3) | |
349 | return; | |
350 | ||
351 | p += k; | |
5034c7bc LP |
352 | p += strspn(p, WHITESPACE); |
353 | ||
354 | if (isempty(p)) | |
355 | return; | |
875c2e22 | 356 | |
cd556b6c | 357 | n_iov_allocated = N_IOVEC_META_FIELDS + 7; |
875c2e22 LP |
358 | iov = new(struct iovec, n_iov_allocated); |
359 | if (!iov) { | |
360 | log_oom(); | |
361 | return; | |
362 | } | |
363 | ||
e6a7ec4b | 364 | iov[n_iov++] = IOVEC_MAKE_STRING("_TRANSPORT=audit"); |
875c2e22 LP |
365 | |
366 | sprintf(source_time_field, "_SOURCE_REALTIME_TIMESTAMP=%" PRIu64, | |
367 | (usec_t) seconds * USEC_PER_SEC + (usec_t) msec * USEC_PER_MSEC); | |
e6a7ec4b | 368 | iov[n_iov++] = IOVEC_MAKE_STRING(source_time_field); |
875c2e22 LP |
369 | |
370 | sprintf(type_field, "_AUDIT_TYPE=%i", type); | |
e6a7ec4b | 371 | iov[n_iov++] = IOVEC_MAKE_STRING(type_field); |
875c2e22 LP |
372 | |
373 | sprintf(id_field, "_AUDIT_ID=%" PRIu64, id); | |
e6a7ec4b | 374 | iov[n_iov++] = IOVEC_MAKE_STRING(id_field); |
875c2e22 | 375 | |
d6f4302b | 376 | assert_cc(4 == LOG_FAC(LOG_AUTH)); |
e6a7ec4b LP |
377 | iov[n_iov++] = IOVEC_MAKE_STRING("SYSLOG_FACILITY=4"); |
378 | iov[n_iov++] = IOVEC_MAKE_STRING("SYSLOG_IDENTIFIER=audit"); | |
cd556b6c | 379 | |
8bb3626d ZJS |
380 | type_name = audit_type_name_alloca(type); |
381 | ||
382 | m = strjoina("MESSAGE=", type_name, " ", p); | |
e6a7ec4b | 383 | iov[n_iov++] = IOVEC_MAKE_STRING(m); |
875c2e22 LP |
384 | |
385 | z = n_iov; | |
386 | ||
387 | map_all_fields(p, map_fields_kernel, "_AUDIT_FIELD_", true, &iov, &n_iov_allocated, &n_iov); | |
388 | ||
389 | if (!GREEDY_REALLOC(iov, n_iov_allocated, n_iov + N_IOVEC_META_FIELDS)) { | |
390 | log_oom(); | |
391 | goto finish; | |
392 | } | |
393 | ||
22e3a02b | 394 | server_dispatch_message(s, iov, n_iov, n_iov_allocated, NULL, NULL, LOG_NOTICE, 0); |
875c2e22 LP |
395 | |
396 | finish: | |
397 | /* free() all entries that map_all_fields() added. All others | |
398 | * are allocated on the stack or are constant. */ | |
399 | ||
400 | for (; z < n_iov; z++) | |
401 | free(iov[z].iov_base); | |
402 | } | |
403 | ||
404 | void server_process_audit_message( | |
405 | Server *s, | |
406 | const void *buffer, | |
407 | size_t buffer_size, | |
408 | const struct ucred *ucred, | |
875c2e22 LP |
409 | const union sockaddr_union *sa, |
410 | socklen_t salen) { | |
411 | ||
412 | const struct nlmsghdr *nl = buffer; | |
413 | ||
414 | assert(s); | |
415 | ||
416 | if (buffer_size < ALIGN(sizeof(struct nlmsghdr))) | |
417 | return; | |
418 | ||
419 | assert(buffer); | |
420 | ||
421 | /* Filter out fake data */ | |
422 | if (!sa || | |
423 | salen != sizeof(struct sockaddr_nl) || | |
424 | sa->nl.nl_family != AF_NETLINK || | |
425 | sa->nl.nl_pid != 0) { | |
426 | log_debug("Audit netlink message from invalid sender."); | |
427 | return; | |
428 | } | |
429 | ||
430 | if (!ucred || ucred->pid != 0) { | |
431 | log_debug("Audit netlink message with invalid credentials."); | |
432 | return; | |
433 | } | |
434 | ||
435 | if (!NLMSG_OK(nl, buffer_size)) { | |
436 | log_error("Audit netlink message truncated."); | |
437 | return; | |
438 | } | |
439 | ||
440 | /* Ignore special Netlink messages */ | |
441 | if (IN_SET(nl->nlmsg_type, NLMSG_NOOP, NLMSG_ERROR)) | |
442 | return; | |
443 | ||
ed563b60 JR |
444 | /* Except AUDIT_USER, all messsages below AUDIT_FIRST_USER_MSG are control messages, let's ignore those */ |
445 | if (nl->nlmsg_type < AUDIT_FIRST_USER_MSG && nl->nlmsg_type != AUDIT_USER) | |
875c2e22 LP |
446 | return; |
447 | ||
0b97208d | 448 | process_audit_string(s, nl->nlmsg_type, NLMSG_DATA(nl), nl->nlmsg_len - ALIGN(sizeof(struct nlmsghdr))); |
875c2e22 LP |
449 | } |
450 | ||
4d9ced99 LP |
451 | static int enable_audit(int fd, bool b) { |
452 | struct { | |
453 | union { | |
454 | struct nlmsghdr header; | |
455 | uint8_t header_space[NLMSG_HDRLEN]; | |
456 | }; | |
457 | struct audit_status body; | |
458 | } _packed_ request = { | |
459 | .header.nlmsg_len = NLMSG_LENGTH(sizeof(struct audit_status)), | |
460 | .header.nlmsg_type = AUDIT_SET, | |
461 | .header.nlmsg_flags = NLM_F_REQUEST, | |
462 | .header.nlmsg_seq = 1, | |
463 | .header.nlmsg_pid = 0, | |
464 | .body.mask = AUDIT_STATUS_ENABLED, | |
465 | .body.enabled = b, | |
466 | }; | |
467 | union sockaddr_union sa = { | |
468 | .nl.nl_family = AF_NETLINK, | |
469 | .nl.nl_pid = 0, | |
470 | }; | |
471 | struct iovec iovec = { | |
472 | .iov_base = &request, | |
473 | .iov_len = NLMSG_LENGTH(sizeof(struct audit_status)), | |
474 | }; | |
475 | struct msghdr mh = { | |
476 | .msg_iov = &iovec, | |
477 | .msg_iovlen = 1, | |
478 | .msg_name = &sa.sa, | |
479 | .msg_namelen = sizeof(sa.nl), | |
480 | }; | |
481 | ||
482 | ssize_t n; | |
483 | ||
484 | n = sendmsg(fd, &mh, MSG_NOSIGNAL); | |
485 | if (n < 0) | |
486 | return -errno; | |
487 | if (n != NLMSG_LENGTH(sizeof(struct audit_status))) | |
488 | return -EIO; | |
489 | ||
490 | /* We don't wait for the result here, we can't do anything | |
491 | * about it anyway */ | |
492 | ||
493 | return 0; | |
494 | } | |
495 | ||
875c2e22 LP |
496 | int server_open_audit(Server *s) { |
497 | static const int one = 1; | |
498 | int r; | |
499 | ||
500 | if (s->audit_fd < 0) { | |
501 | static const union sockaddr_union sa = { | |
502 | .nl.nl_family = AF_NETLINK, | |
503 | .nl.nl_pid = 0, | |
504 | .nl.nl_groups = AUDIT_NLGRP_READLOG, | |
505 | }; | |
506 | ||
507 | s->audit_fd = socket(AF_NETLINK, SOCK_RAW|SOCK_CLOEXEC|SOCK_NONBLOCK, NETLINK_AUDIT); | |
508 | if (s->audit_fd < 0) { | |
3742095b | 509 | if (IN_SET(errno, EAFNOSUPPORT, EPROTONOSUPPORT)) |
875c2e22 LP |
510 | log_debug("Audit not supported in the kernel."); |
511 | else | |
56f64d95 | 512 | log_warning_errno(errno, "Failed to create audit socket, ignoring: %m"); |
875c2e22 LP |
513 | |
514 | return 0; | |
515 | } | |
516 | ||
417a7fdc LP |
517 | if (bind(s->audit_fd, &sa.sa, sizeof(sa.nl)) < 0) { |
518 | log_warning_errno(errno, | |
519 | "Failed to join audit multicast group. " | |
520 | "The kernel is probably too old or multicast reading is not supported. " | |
521 | "Ignoring: %m"); | |
522 | s->audit_fd = safe_close(s->audit_fd); | |
523 | return 0; | |
524 | } | |
875c2e22 LP |
525 | } else |
526 | fd_nonblock(s->audit_fd, 1); | |
527 | ||
528 | r = setsockopt(s->audit_fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)); | |
4a62c710 MS |
529 | if (r < 0) |
530 | return log_error_errno(errno, "Failed to set SO_PASSCRED on audit socket: %m"); | |
875c2e22 | 531 | |
8531ae70 | 532 | r = sd_event_add_io(s->event, &s->audit_event_source, s->audit_fd, EPOLLIN, server_process_datagram, s); |
23bbb0de MS |
533 | if (r < 0) |
534 | return log_error_errno(r, "Failed to add audit fd to event loop: %m"); | |
875c2e22 | 535 | |
4d9ced99 LP |
536 | /* We are listening now, try to enable audit */ |
537 | r = enable_audit(s->audit_fd, true); | |
538 | if (r < 0) | |
da927ba9 | 539 | log_warning_errno(r, "Failed to issue audit enable call: %m"); |
4d9ced99 | 540 | |
875c2e22 LP |
541 | return 0; |
542 | } |