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Commit | Line | Data |
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5b12334d LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2013 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
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 | |
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 | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
7d9fcc2b | 20 | #include <linux/capability.h> |
07630cea | 21 | #include <stdlib.h> |
5b12334d | 22 | |
b5efdb8a | 23 | #include "alloc-util.h" |
430f0182 | 24 | #include "audit-util.h" |
07630cea LP |
25 | #include "bus-creds.h" |
26 | #include "bus-label.h" | |
5b12334d | 27 | #include "bus-message.h" |
057171ef | 28 | #include "bus-util.h" |
430f0182 | 29 | #include "capability-util.h" |
07630cea | 30 | #include "cgroup-util.h" |
3ffd4af2 | 31 | #include "fd-util.h" |
07630cea | 32 | #include "fileio.h" |
f97b34a6 | 33 | #include "format-util.h" |
e4e73a63 | 34 | #include "hexdecoct.h" |
6bedfcbb | 35 | #include "parse-util.h" |
07630cea LP |
36 | #include "process-util.h" |
37 | #include "string-util.h" | |
49b832c5 | 38 | #include "strv.h" |
07630cea | 39 | #include "terminal-util.h" |
ee104e11 | 40 | #include "user-util.h" |
07630cea | 41 | #include "util.h" |
5b12334d LP |
42 | |
43 | enum { | |
44 | CAP_OFFSET_INHERITABLE = 0, | |
45 | CAP_OFFSET_PERMITTED = 1, | |
46 | CAP_OFFSET_EFFECTIVE = 2, | |
47 | CAP_OFFSET_BOUNDING = 3 | |
48 | }; | |
49 | ||
50 | void bus_creds_done(sd_bus_creds *c) { | |
51 | assert(c); | |
52 | ||
53 | /* For internal bus cred structures that are allocated by | |
54 | * something else */ | |
55 | ||
56 | free(c->session); | |
57 | free(c->unit); | |
58 | free(c->user_unit); | |
59 | free(c->slice); | |
329ac4bc | 60 | free(c->user_slice); |
455971c1 | 61 | free(c->unescaped_description); |
606303a9 | 62 | free(c->supplementary_gids); |
4761e880 | 63 | free(c->tty); |
5b12334d | 64 | |
50c45216 LP |
65 | free(c->well_known_names); /* note that this is an strv, but |
66 | * we only free the array, not the | |
67 | * strings the array points to. The | |
68 | * full strv we only free if | |
69 | * c->allocated is set, see | |
70 | * below. */ | |
71 | ||
49b832c5 | 72 | strv_free(c->cmdline_array); |
5b12334d LP |
73 | } |
74 | ||
75 | _public_ sd_bus_creds *sd_bus_creds_ref(sd_bus_creds *c) { | |
4afd3348 LP |
76 | |
77 | if (!c) | |
78 | return NULL; | |
5b12334d LP |
79 | |
80 | if (c->allocated) { | |
81 | assert(c->n_ref > 0); | |
82 | c->n_ref++; | |
83 | } else { | |
84 | sd_bus_message *m; | |
85 | ||
86 | /* If this is an embedded creds structure, then | |
87 | * forward ref counting to the message */ | |
88 | m = container_of(c, sd_bus_message, creds); | |
89 | sd_bus_message_ref(m); | |
90 | } | |
91 | ||
92 | return c; | |
93 | } | |
94 | ||
95 | _public_ sd_bus_creds *sd_bus_creds_unref(sd_bus_creds *c) { | |
5b1bc83f LP |
96 | |
97 | if (!c) | |
98 | return NULL; | |
5b12334d LP |
99 | |
100 | if (c->allocated) { | |
101 | assert(c->n_ref > 0); | |
102 | c->n_ref--; | |
103 | ||
104 | if (c->n_ref == 0) { | |
5b12334d LP |
105 | free(c->comm); |
106 | free(c->tid_comm); | |
107 | free(c->exe); | |
108 | free(c->cmdline); | |
109 | free(c->cgroup); | |
110 | free(c->capability); | |
111 | free(c->label); | |
49b832c5 | 112 | free(c->unique_name); |
751bc6ac | 113 | free(c->cgroup_root); |
455971c1 | 114 | free(c->description); |
606303a9 | 115 | |
a1e58e8e | 116 | c->supplementary_gids = mfree(c->supplementary_gids); |
50c45216 | 117 | |
6796073e | 118 | c->well_known_names = strv_free(c->well_known_names); |
50c45216 LP |
119 | |
120 | bus_creds_done(c); | |
121 | ||
5b12334d LP |
122 | free(c); |
123 | } | |
124 | } else { | |
125 | sd_bus_message *m; | |
126 | ||
127 | m = container_of(c, sd_bus_message, creds); | |
128 | sd_bus_message_unref(m); | |
129 | } | |
130 | ||
131 | ||
132 | return NULL; | |
133 | } | |
134 | ||
4cf8496d | 135 | _public_ uint64_t sd_bus_creds_get_mask(const sd_bus_creds *c) { |
5b12334d LP |
136 | assert_return(c, 0); |
137 | ||
138 | return c->mask; | |
139 | } | |
140 | ||
0f514420 LP |
141 | _public_ uint64_t sd_bus_creds_get_augmented_mask(const sd_bus_creds *c) { |
142 | assert_return(c, 0); | |
143 | ||
144 | return c->augmented; | |
145 | } | |
146 | ||
5b12334d LP |
147 | sd_bus_creds* bus_creds_new(void) { |
148 | sd_bus_creds *c; | |
149 | ||
150 | c = new0(sd_bus_creds, 1); | |
151 | if (!c) | |
152 | return NULL; | |
153 | ||
154 | c->allocated = true; | |
155 | c->n_ref = 1; | |
156 | return c; | |
157 | } | |
158 | ||
151b9b96 | 159 | _public_ int sd_bus_creds_new_from_pid(sd_bus_creds **ret, pid_t pid, uint64_t mask) { |
5b12334d LP |
160 | sd_bus_creds *c; |
161 | int r; | |
162 | ||
163 | assert_return(pid >= 0, -EINVAL); | |
15411c0c | 164 | assert_return(mask <= _SD_BUS_CREDS_ALL, -EOPNOTSUPP); |
5b12334d LP |
165 | assert_return(ret, -EINVAL); |
166 | ||
167 | if (pid == 0) | |
df0ff127 | 168 | pid = getpid_cached(); |
5b12334d LP |
169 | |
170 | c = bus_creds_new(); | |
171 | if (!c) | |
172 | return -ENOMEM; | |
173 | ||
705a415f | 174 | r = bus_creds_add_more(c, mask | SD_BUS_CREDS_AUGMENT, pid, 0); |
5b12334d | 175 | if (r < 0) { |
0349c608 | 176 | sd_bus_creds_unref(c); |
5b12334d LP |
177 | return r; |
178 | } | |
179 | ||
180 | /* Check if the process existed at all, in case we haven't | |
181 | * figured that out already */ | |
9f5650ae | 182 | if (!pid_is_alive(pid)) { |
5b12334d LP |
183 | sd_bus_creds_unref(c); |
184 | return -ESRCH; | |
185 | } | |
186 | ||
187 | *ret = c; | |
188 | return 0; | |
189 | } | |
190 | ||
191 | _public_ int sd_bus_creds_get_uid(sd_bus_creds *c, uid_t *uid) { | |
192 | assert_return(c, -EINVAL); | |
193 | assert_return(uid, -EINVAL); | |
6a4abbc8 LP |
194 | |
195 | if (!(c->mask & SD_BUS_CREDS_UID)) | |
196 | return -ENODATA; | |
5b12334d LP |
197 | |
198 | *uid = c->uid; | |
199 | return 0; | |
200 | } | |
201 | ||
705a415f LP |
202 | _public_ int sd_bus_creds_get_euid(sd_bus_creds *c, uid_t *euid) { |
203 | assert_return(c, -EINVAL); | |
204 | assert_return(euid, -EINVAL); | |
205 | ||
206 | if (!(c->mask & SD_BUS_CREDS_EUID)) | |
207 | return -ENODATA; | |
208 | ||
209 | *euid = c->euid; | |
210 | return 0; | |
211 | } | |
212 | ||
213 | _public_ int sd_bus_creds_get_suid(sd_bus_creds *c, uid_t *suid) { | |
214 | assert_return(c, -EINVAL); | |
215 | assert_return(suid, -EINVAL); | |
216 | ||
217 | if (!(c->mask & SD_BUS_CREDS_SUID)) | |
218 | return -ENODATA; | |
219 | ||
220 | *suid = c->suid; | |
221 | return 0; | |
222 | } | |
223 | ||
224 | ||
225 | _public_ int sd_bus_creds_get_fsuid(sd_bus_creds *c, uid_t *fsuid) { | |
226 | assert_return(c, -EINVAL); | |
227 | assert_return(fsuid, -EINVAL); | |
228 | ||
229 | if (!(c->mask & SD_BUS_CREDS_FSUID)) | |
230 | return -ENODATA; | |
231 | ||
232 | *fsuid = c->fsuid; | |
233 | return 0; | |
234 | } | |
235 | ||
5b12334d LP |
236 | _public_ int sd_bus_creds_get_gid(sd_bus_creds *c, gid_t *gid) { |
237 | assert_return(c, -EINVAL); | |
238 | assert_return(gid, -EINVAL); | |
6a4abbc8 | 239 | |
1c021669 | 240 | if (!(c->mask & SD_BUS_CREDS_GID)) |
6a4abbc8 | 241 | return -ENODATA; |
5b12334d LP |
242 | |
243 | *gid = c->gid; | |
244 | return 0; | |
245 | } | |
246 | ||
705a415f LP |
247 | _public_ int sd_bus_creds_get_egid(sd_bus_creds *c, gid_t *egid) { |
248 | assert_return(c, -EINVAL); | |
249 | assert_return(egid, -EINVAL); | |
250 | ||
251 | if (!(c->mask & SD_BUS_CREDS_EGID)) | |
252 | return -ENODATA; | |
253 | ||
254 | *egid = c->egid; | |
255 | return 0; | |
256 | } | |
257 | ||
258 | _public_ int sd_bus_creds_get_sgid(sd_bus_creds *c, gid_t *sgid) { | |
259 | assert_return(c, -EINVAL); | |
260 | assert_return(sgid, -EINVAL); | |
261 | ||
262 | if (!(c->mask & SD_BUS_CREDS_SGID)) | |
263 | return -ENODATA; | |
264 | ||
265 | *sgid = c->sgid; | |
266 | return 0; | |
267 | } | |
268 | ||
705a415f LP |
269 | _public_ int sd_bus_creds_get_fsgid(sd_bus_creds *c, gid_t *fsgid) { |
270 | assert_return(c, -EINVAL); | |
271 | assert_return(fsgid, -EINVAL); | |
272 | ||
273 | if (!(c->mask & SD_BUS_CREDS_FSGID)) | |
274 | return -ENODATA; | |
275 | ||
276 | *fsgid = c->fsgid; | |
277 | return 0; | |
278 | } | |
279 | ||
02581590 LP |
280 | _public_ int sd_bus_creds_get_supplementary_gids(sd_bus_creds *c, const gid_t **gids) { |
281 | assert_return(c, -EINVAL); | |
282 | assert_return(gids, -EINVAL); | |
283 | ||
284 | if (!(c->mask & SD_BUS_CREDS_SUPPLEMENTARY_GIDS)) | |
285 | return -ENODATA; | |
286 | ||
287 | *gids = c->supplementary_gids; | |
288 | return (int) c->n_supplementary_gids; | |
289 | } | |
290 | ||
5b12334d LP |
291 | _public_ int sd_bus_creds_get_pid(sd_bus_creds *c, pid_t *pid) { |
292 | assert_return(c, -EINVAL); | |
293 | assert_return(pid, -EINVAL); | |
6a4abbc8 LP |
294 | |
295 | if (!(c->mask & SD_BUS_CREDS_PID)) | |
296 | return -ENODATA; | |
5b12334d LP |
297 | |
298 | assert(c->pid > 0); | |
299 | *pid = c->pid; | |
300 | return 0; | |
301 | } | |
302 | ||
1386e47d LP |
303 | _public_ int sd_bus_creds_get_ppid(sd_bus_creds *c, pid_t *ppid) { |
304 | assert_return(c, -EINVAL); | |
305 | assert_return(ppid, -EINVAL); | |
306 | ||
307 | if (!(c->mask & SD_BUS_CREDS_PPID)) | |
308 | return -ENODATA; | |
309 | ||
45afd519 | 310 | /* PID 1 has no parent process. Let's distinguish the case of |
cfeaa44a LP |
311 | * not knowing and not having a parent process by the returned |
312 | * error code. */ | |
313 | if (c->ppid == 0) | |
314 | return -ENXIO; | |
315 | ||
1386e47d LP |
316 | *ppid = c->ppid; |
317 | return 0; | |
318 | } | |
319 | ||
5b12334d LP |
320 | _public_ int sd_bus_creds_get_tid(sd_bus_creds *c, pid_t *tid) { |
321 | assert_return(c, -EINVAL); | |
322 | assert_return(tid, -EINVAL); | |
6a4abbc8 LP |
323 | |
324 | if (!(c->mask & SD_BUS_CREDS_TID)) | |
325 | return -ENODATA; | |
5b12334d LP |
326 | |
327 | assert(c->tid > 0); | |
328 | *tid = c->tid; | |
329 | return 0; | |
330 | } | |
331 | ||
5b12334d LP |
332 | _public_ int sd_bus_creds_get_selinux_context(sd_bus_creds *c, const char **ret) { |
333 | assert_return(c, -EINVAL); | |
6a4abbc8 LP |
334 | |
335 | if (!(c->mask & SD_BUS_CREDS_SELINUX_CONTEXT)) | |
336 | return -ENODATA; | |
5b12334d LP |
337 | |
338 | assert(c->label); | |
339 | *ret = c->label; | |
340 | return 0; | |
341 | } | |
342 | ||
343 | _public_ int sd_bus_creds_get_comm(sd_bus_creds *c, const char **ret) { | |
344 | assert_return(c, -EINVAL); | |
345 | assert_return(ret, -EINVAL); | |
6a4abbc8 LP |
346 | |
347 | if (!(c->mask & SD_BUS_CREDS_COMM)) | |
348 | return -ENODATA; | |
5b12334d LP |
349 | |
350 | assert(c->comm); | |
351 | *ret = c->comm; | |
352 | return 0; | |
353 | } | |
354 | ||
355 | _public_ int sd_bus_creds_get_tid_comm(sd_bus_creds *c, const char **ret) { | |
356 | assert_return(c, -EINVAL); | |
357 | assert_return(ret, -EINVAL); | |
6a4abbc8 LP |
358 | |
359 | if (!(c->mask & SD_BUS_CREDS_TID_COMM)) | |
360 | return -ENODATA; | |
5b12334d LP |
361 | |
362 | assert(c->tid_comm); | |
363 | *ret = c->tid_comm; | |
364 | return 0; | |
365 | } | |
366 | ||
367 | _public_ int sd_bus_creds_get_exe(sd_bus_creds *c, const char **ret) { | |
368 | assert_return(c, -EINVAL); | |
369 | assert_return(ret, -EINVAL); | |
6a4abbc8 LP |
370 | |
371 | if (!(c->mask & SD_BUS_CREDS_EXE)) | |
372 | return -ENODATA; | |
5b12334d | 373 | |
cfeaa44a LP |
374 | if (!c->exe) |
375 | return -ENXIO; | |
376 | ||
5b12334d LP |
377 | *ret = c->exe; |
378 | return 0; | |
379 | } | |
380 | ||
381 | _public_ int sd_bus_creds_get_cgroup(sd_bus_creds *c, const char **ret) { | |
382 | assert_return(c, -EINVAL); | |
383 | assert_return(ret, -EINVAL); | |
6a4abbc8 LP |
384 | |
385 | if (!(c->mask & SD_BUS_CREDS_CGROUP)) | |
386 | return -ENODATA; | |
5b12334d LP |
387 | |
388 | assert(c->cgroup); | |
389 | *ret = c->cgroup; | |
390 | return 0; | |
391 | } | |
392 | ||
393 | _public_ int sd_bus_creds_get_unit(sd_bus_creds *c, const char **ret) { | |
394 | int r; | |
395 | ||
396 | assert_return(c, -EINVAL); | |
397 | assert_return(ret, -EINVAL); | |
6a4abbc8 LP |
398 | |
399 | if (!(c->mask & SD_BUS_CREDS_UNIT)) | |
400 | return -ENODATA; | |
5b12334d LP |
401 | |
402 | assert(c->cgroup); | |
403 | ||
404 | if (!c->unit) { | |
751bc6ac LP |
405 | const char *shifted; |
406 | ||
407 | r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted); | |
408 | if (r < 0) | |
409 | return r; | |
410 | ||
411 | r = cg_path_get_unit(shifted, (char**) &c->unit); | |
5b12334d LP |
412 | if (r < 0) |
413 | return r; | |
414 | } | |
415 | ||
416 | *ret = c->unit; | |
417 | return 0; | |
418 | } | |
419 | ||
420 | _public_ int sd_bus_creds_get_user_unit(sd_bus_creds *c, const char **ret) { | |
421 | int r; | |
422 | ||
423 | assert_return(c, -EINVAL); | |
424 | assert_return(ret, -EINVAL); | |
6a4abbc8 LP |
425 | |
426 | if (!(c->mask & SD_BUS_CREDS_USER_UNIT)) | |
427 | return -ENODATA; | |
5b12334d LP |
428 | |
429 | assert(c->cgroup); | |
430 | ||
431 | if (!c->user_unit) { | |
751bc6ac LP |
432 | const char *shifted; |
433 | ||
434 | r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted); | |
435 | if (r < 0) | |
436 | return r; | |
437 | ||
438 | r = cg_path_get_user_unit(shifted, (char**) &c->user_unit); | |
5b12334d LP |
439 | if (r < 0) |
440 | return r; | |
441 | } | |
442 | ||
443 | *ret = c->user_unit; | |
444 | return 0; | |
445 | } | |
446 | ||
447 | _public_ int sd_bus_creds_get_slice(sd_bus_creds *c, const char **ret) { | |
448 | int r; | |
449 | ||
450 | assert_return(c, -EINVAL); | |
451 | assert_return(ret, -EINVAL); | |
6a4abbc8 LP |
452 | |
453 | if (!(c->mask & SD_BUS_CREDS_SLICE)) | |
454 | return -ENODATA; | |
5b12334d LP |
455 | |
456 | assert(c->cgroup); | |
457 | ||
458 | if (!c->slice) { | |
751bc6ac LP |
459 | const char *shifted; |
460 | ||
461 | r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted); | |
462 | if (r < 0) | |
463 | return r; | |
464 | ||
465 | r = cg_path_get_slice(shifted, (char**) &c->slice); | |
5b12334d LP |
466 | if (r < 0) |
467 | return r; | |
468 | } | |
469 | ||
470 | *ret = c->slice; | |
471 | return 0; | |
472 | } | |
473 | ||
329ac4bc LP |
474 | _public_ int sd_bus_creds_get_user_slice(sd_bus_creds *c, const char **ret) { |
475 | int r; | |
476 | ||
477 | assert_return(c, -EINVAL); | |
478 | assert_return(ret, -EINVAL); | |
479 | ||
480 | if (!(c->mask & SD_BUS_CREDS_USER_SLICE)) | |
481 | return -ENODATA; | |
482 | ||
483 | assert(c->cgroup); | |
484 | ||
485 | if (!c->user_slice) { | |
486 | const char *shifted; | |
487 | ||
488 | r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted); | |
489 | if (r < 0) | |
490 | return r; | |
491 | ||
492 | r = cg_path_get_user_slice(shifted, (char**) &c->user_slice); | |
493 | if (r < 0) | |
494 | return r; | |
495 | } | |
496 | ||
497 | *ret = c->user_slice; | |
498 | return 0; | |
499 | } | |
500 | ||
5b12334d LP |
501 | _public_ int sd_bus_creds_get_session(sd_bus_creds *c, const char **ret) { |
502 | int r; | |
503 | ||
504 | assert_return(c, -EINVAL); | |
505 | assert_return(ret, -EINVAL); | |
6a4abbc8 LP |
506 | |
507 | if (!(c->mask & SD_BUS_CREDS_SESSION)) | |
508 | return -ENODATA; | |
5b12334d LP |
509 | |
510 | assert(c->cgroup); | |
511 | ||
512 | if (!c->session) { | |
751bc6ac LP |
513 | const char *shifted; |
514 | ||
515 | r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted); | |
516 | if (r < 0) | |
517 | return r; | |
518 | ||
519 | r = cg_path_get_session(shifted, (char**) &c->session); | |
5b12334d LP |
520 | if (r < 0) |
521 | return r; | |
522 | } | |
523 | ||
524 | *ret = c->session; | |
525 | return 0; | |
526 | } | |
527 | ||
528 | _public_ int sd_bus_creds_get_owner_uid(sd_bus_creds *c, uid_t *uid) { | |
751bc6ac LP |
529 | const char *shifted; |
530 | int r; | |
531 | ||
5b12334d LP |
532 | assert_return(c, -EINVAL); |
533 | assert_return(uid, -EINVAL); | |
6a4abbc8 LP |
534 | |
535 | if (!(c->mask & SD_BUS_CREDS_OWNER_UID)) | |
536 | return -ENODATA; | |
5b12334d LP |
537 | |
538 | assert(c->cgroup); | |
539 | ||
751bc6ac LP |
540 | r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted); |
541 | if (r < 0) | |
542 | return r; | |
543 | ||
544 | return cg_path_get_owner_uid(shifted, uid); | |
5b12334d LP |
545 | } |
546 | ||
547 | _public_ int sd_bus_creds_get_cmdline(sd_bus_creds *c, char ***cmdline) { | |
5b12334d | 548 | assert_return(c, -EINVAL); |
6a4abbc8 LP |
549 | |
550 | if (!(c->mask & SD_BUS_CREDS_CMDLINE)) | |
551 | return -ENODATA; | |
5b12334d | 552 | |
cfeaa44a LP |
553 | if (!c->cmdline) |
554 | return -ENXIO; | |
5b12334d | 555 | |
49b832c5 LP |
556 | if (!c->cmdline_array) { |
557 | c->cmdline_array = strv_parse_nulstr(c->cmdline, c->cmdline_size); | |
558 | if (!c->cmdline_array) | |
559 | return -ENOMEM; | |
5b12334d LP |
560 | } |
561 | ||
5b12334d | 562 | *cmdline = c->cmdline_array; |
5b12334d LP |
563 | return 0; |
564 | } | |
565 | ||
566 | _public_ int sd_bus_creds_get_audit_session_id(sd_bus_creds *c, uint32_t *sessionid) { | |
567 | assert_return(c, -EINVAL); | |
568 | assert_return(sessionid, -EINVAL); | |
6a4abbc8 LP |
569 | |
570 | if (!(c->mask & SD_BUS_CREDS_AUDIT_SESSION_ID)) | |
571 | return -ENODATA; | |
5b12334d | 572 | |
3a87a86e | 573 | if (!audit_session_is_valid(c->audit_session_id)) |
cfeaa44a LP |
574 | return -ENXIO; |
575 | ||
5b12334d LP |
576 | *sessionid = c->audit_session_id; |
577 | return 0; | |
578 | } | |
579 | ||
580 | _public_ int sd_bus_creds_get_audit_login_uid(sd_bus_creds *c, uid_t *uid) { | |
581 | assert_return(c, -EINVAL); | |
582 | assert_return(uid, -EINVAL); | |
6a4abbc8 LP |
583 | |
584 | if (!(c->mask & SD_BUS_CREDS_AUDIT_LOGIN_UID)) | |
585 | return -ENODATA; | |
5b12334d | 586 | |
cad93f29 | 587 | if (!uid_is_valid(c->audit_login_uid)) |
cfeaa44a LP |
588 | return -ENXIO; |
589 | ||
5b12334d LP |
590 | *uid = c->audit_login_uid; |
591 | return 0; | |
592 | } | |
593 | ||
4761e880 LP |
594 | _public_ int sd_bus_creds_get_tty(sd_bus_creds *c, const char **ret) { |
595 | assert_return(c, -EINVAL); | |
596 | assert_return(ret, -EINVAL); | |
597 | ||
598 | if (!(c->mask & SD_BUS_CREDS_TTY)) | |
599 | return -ENODATA; | |
600 | ||
cfeaa44a LP |
601 | if (!c->tty) |
602 | return -ENXIO; | |
603 | ||
4761e880 LP |
604 | *ret = c->tty; |
605 | return 0; | |
606 | } | |
607 | ||
49b832c5 LP |
608 | _public_ int sd_bus_creds_get_unique_name(sd_bus_creds *c, const char **unique_name) { |
609 | assert_return(c, -EINVAL); | |
610 | assert_return(unique_name, -EINVAL); | |
6a4abbc8 LP |
611 | |
612 | if (!(c->mask & SD_BUS_CREDS_UNIQUE_NAME)) | |
613 | return -ENODATA; | |
49b832c5 LP |
614 | |
615 | *unique_name = c->unique_name; | |
616 | return 0; | |
617 | } | |
618 | ||
619 | _public_ int sd_bus_creds_get_well_known_names(sd_bus_creds *c, char ***well_known_names) { | |
620 | assert_return(c, -EINVAL); | |
621 | assert_return(well_known_names, -EINVAL); | |
6a4abbc8 LP |
622 | |
623 | if (!(c->mask & SD_BUS_CREDS_WELL_KNOWN_NAMES)) | |
624 | return -ENODATA; | |
49b832c5 | 625 | |
ac653862 LP |
626 | /* As a special hack we return the bus driver as well-known |
627 | * names list when this is requested. */ | |
628 | if (c->well_known_names_driver) { | |
629 | static const char* const wkn[] = { | |
630 | "org.freedesktop.DBus", | |
631 | NULL | |
632 | }; | |
633 | ||
634 | *well_known_names = (char**) wkn; | |
635 | return 0; | |
636 | } | |
637 | ||
fb6d9b77 LP |
638 | if (c->well_known_names_local) { |
639 | static const char* const wkn[] = { | |
640 | "org.freedesktop.DBus.Local", | |
641 | NULL | |
642 | }; | |
643 | ||
644 | *well_known_names = (char**) wkn; | |
645 | return 0; | |
646 | } | |
647 | ||
65dae17a | 648 | *well_known_names = c->well_known_names; |
49b832c5 LP |
649 | return 0; |
650 | } | |
651 | ||
455971c1 | 652 | _public_ int sd_bus_creds_get_description(sd_bus_creds *c, const char **ret) { |
cccb0b2c LP |
653 | assert_return(c, -EINVAL); |
654 | assert_return(ret, -EINVAL); | |
655 | ||
455971c1 | 656 | if (!(c->mask & SD_BUS_CREDS_DESCRIPTION)) |
cccb0b2c LP |
657 | return -ENODATA; |
658 | ||
455971c1 | 659 | assert(c->description); |
2578d51e | 660 | |
455971c1 LP |
661 | if (!c->unescaped_description) { |
662 | c->unescaped_description = bus_label_unescape(c->description); | |
663 | if (!c->unescaped_description) | |
2578d51e LP |
664 | return -ENOMEM; |
665 | } | |
666 | ||
455971c1 | 667 | *ret = c->unescaped_description; |
cccb0b2c LP |
668 | return 0; |
669 | } | |
670 | ||
5b12334d LP |
671 | static int has_cap(sd_bus_creds *c, unsigned offset, int capability) { |
672 | size_t sz; | |
673 | ||
674 | assert(c); | |
34a5d5e5 | 675 | assert(capability >= 0); |
5b12334d LP |
676 | assert(c->capability); |
677 | ||
da634f97 | 678 | if ((unsigned) capability > cap_last_cap()) |
5b12334d LP |
679 | return 0; |
680 | ||
da634f97 LP |
681 | sz = DIV_ROUND_UP(cap_last_cap(), 32U); |
682 | ||
7d9fcc2b | 683 | return !!(c->capability[offset * sz + CAP_TO_INDEX(capability)] & CAP_TO_MASK(capability)); |
5b12334d LP |
684 | } |
685 | ||
686 | _public_ int sd_bus_creds_has_effective_cap(sd_bus_creds *c, int capability) { | |
687 | assert_return(c, -EINVAL); | |
688 | assert_return(capability >= 0, -EINVAL); | |
6a4abbc8 LP |
689 | |
690 | if (!(c->mask & SD_BUS_CREDS_EFFECTIVE_CAPS)) | |
691 | return -ENODATA; | |
5b12334d LP |
692 | |
693 | return has_cap(c, CAP_OFFSET_EFFECTIVE, capability); | |
694 | } | |
695 | ||
696 | _public_ int sd_bus_creds_has_permitted_cap(sd_bus_creds *c, int capability) { | |
697 | assert_return(c, -EINVAL); | |
698 | assert_return(capability >= 0, -EINVAL); | |
6a4abbc8 LP |
699 | |
700 | if (!(c->mask & SD_BUS_CREDS_PERMITTED_CAPS)) | |
701 | return -ENODATA; | |
5b12334d LP |
702 | |
703 | return has_cap(c, CAP_OFFSET_PERMITTED, capability); | |
704 | } | |
705 | ||
706 | _public_ int sd_bus_creds_has_inheritable_cap(sd_bus_creds *c, int capability) { | |
707 | assert_return(c, -EINVAL); | |
708 | assert_return(capability >= 0, -EINVAL); | |
6a4abbc8 LP |
709 | |
710 | if (!(c->mask & SD_BUS_CREDS_INHERITABLE_CAPS)) | |
711 | return -ENODATA; | |
5b12334d LP |
712 | |
713 | return has_cap(c, CAP_OFFSET_INHERITABLE, capability); | |
714 | } | |
715 | ||
716 | _public_ int sd_bus_creds_has_bounding_cap(sd_bus_creds *c, int capability) { | |
717 | assert_return(c, -EINVAL); | |
718 | assert_return(capability >= 0, -EINVAL); | |
6a4abbc8 LP |
719 | |
720 | if (!(c->mask & SD_BUS_CREDS_BOUNDING_CAPS)) | |
721 | return -ENODATA; | |
5b12334d LP |
722 | |
723 | return has_cap(c, CAP_OFFSET_BOUNDING, capability); | |
724 | } | |
725 | ||
726 | static int parse_caps(sd_bus_creds *c, unsigned offset, const char *p) { | |
34a5d5e5 | 727 | size_t sz, max; |
7d9fcc2b | 728 | unsigned i, j; |
5b12334d LP |
729 | |
730 | assert(c); | |
731 | assert(p); | |
732 | ||
7d9fcc2b | 733 | max = DIV_ROUND_UP(cap_last_cap(), 32U); |
5b12334d LP |
734 | p += strspn(p, WHITESPACE); |
735 | ||
736 | sz = strlen(p); | |
7d9fcc2b | 737 | if (sz % 8 != 0) |
5b12334d LP |
738 | return -EINVAL; |
739 | ||
7d9fcc2b | 740 | sz /= 8; |
34a5d5e5 DH |
741 | if (sz > max) |
742 | return -EINVAL; | |
743 | ||
5b12334d | 744 | if (!c->capability) { |
7d9fcc2b | 745 | c->capability = new0(uint32_t, max * 4); |
5b12334d LP |
746 | if (!c->capability) |
747 | return -ENOMEM; | |
5b12334d LP |
748 | } |
749 | ||
750 | for (i = 0; i < sz; i ++) { | |
7d9fcc2b | 751 | uint32_t v = 0; |
5b12334d | 752 | |
7d9fcc2b DH |
753 | for (j = 0; j < 8; ++j) { |
754 | int t; | |
5b12334d | 755 | |
7d9fcc2b DH |
756 | t = unhexchar(*p++); |
757 | if (t < 0) | |
758 | return -EINVAL; | |
5b12334d | 759 | |
7d9fcc2b DH |
760 | v = (v << 4) | t; |
761 | } | |
762 | ||
763 | c->capability[offset * max + (sz - i - 1)] = v; | |
5b12334d LP |
764 | } |
765 | ||
766 | return 0; | |
767 | } | |
768 | ||
769 | int bus_creds_add_more(sd_bus_creds *c, uint64_t mask, pid_t pid, pid_t tid) { | |
770 | uint64_t missing; | |
771 | int r; | |
772 | ||
773 | assert(c); | |
774 | assert(c->allocated); | |
775 | ||
705a415f LP |
776 | if (!(mask & SD_BUS_CREDS_AUGMENT)) |
777 | return 0; | |
778 | ||
5b12334d | 779 | /* Try to retrieve PID from creds if it wasn't passed to us */ |
236f83af ZJS |
780 | if (pid > 0) { |
781 | c->pid = pid; | |
782 | c->mask |= SD_BUS_CREDS_PID; | |
783 | } else if (c->mask & SD_BUS_CREDS_PID) | |
5b12334d | 784 | pid = c->pid; |
236f83af ZJS |
785 | else |
786 | /* Without pid we cannot do much... */ | |
5b12334d LP |
787 | return 0; |
788 | ||
0f514420 LP |
789 | /* Try to retrieve TID from creds if it wasn't passed to us */ |
790 | if (tid <= 0 && (c->mask & SD_BUS_CREDS_TID)) | |
791 | tid = c->tid; | |
792 | ||
793 | /* Calculate what we shall and can add */ | |
794 | missing = mask & ~(c->mask|SD_BUS_CREDS_PID|SD_BUS_CREDS_TID|SD_BUS_CREDS_UNIQUE_NAME|SD_BUS_CREDS_WELL_KNOWN_NAMES|SD_BUS_CREDS_DESCRIPTION|SD_BUS_CREDS_AUGMENT); | |
795 | if (missing == 0) | |
796 | return 0; | |
797 | ||
705a415f LP |
798 | if (tid > 0) { |
799 | c->tid = tid; | |
800 | c->mask |= SD_BUS_CREDS_TID; | |
801 | } | |
802 | ||
1386e47d LP |
803 | if (missing & (SD_BUS_CREDS_PPID | |
804 | SD_BUS_CREDS_UID | SD_BUS_CREDS_EUID | SD_BUS_CREDS_SUID | SD_BUS_CREDS_FSUID | | |
705a415f | 805 | SD_BUS_CREDS_GID | SD_BUS_CREDS_EGID | SD_BUS_CREDS_SGID | SD_BUS_CREDS_FSGID | |
02581590 | 806 | SD_BUS_CREDS_SUPPLEMENTARY_GIDS | |
5b12334d LP |
807 | SD_BUS_CREDS_EFFECTIVE_CAPS | SD_BUS_CREDS_INHERITABLE_CAPS | |
808 | SD_BUS_CREDS_PERMITTED_CAPS | SD_BUS_CREDS_BOUNDING_CAPS)) { | |
809 | ||
810 | _cleanup_fclose_ FILE *f = NULL; | |
5b12334d LP |
811 | const char *p; |
812 | ||
813 | p = procfs_file_alloca(pid, "status"); | |
814 | ||
815 | f = fopen(p, "re"); | |
705a415f LP |
816 | if (!f) { |
817 | if (errno == ENOENT) | |
818 | return -ESRCH; | |
945c2931 | 819 | else if (!IN_SET(errno, EPERM, EACCES)) |
705a415f LP |
820 | return -errno; |
821 | } else { | |
822 | char line[LINE_MAX]; | |
823 | ||
824 | FOREACH_LINE(line, f, return -errno) { | |
825 | truncate_nl(line); | |
826 | ||
1386e47d LP |
827 | if (missing & SD_BUS_CREDS_PPID) { |
828 | p = startswith(line, "PPid:"); | |
829 | if (p) { | |
830 | p += strspn(p, WHITESPACE); | |
831 | ||
3a698817 LP |
832 | /* Explicitly check for PPID 0 (which is the case for PID 1) */ |
833 | if (!streq(p, "0")) { | |
834 | r = parse_pid(p, &c->ppid); | |
835 | if (r < 0) | |
836 | return r; | |
837 | ||
cfeaa44a LP |
838 | } else |
839 | c->ppid = 0; | |
840 | ||
841 | c->mask |= SD_BUS_CREDS_PPID; | |
1386e47d LP |
842 | continue; |
843 | } | |
844 | } | |
845 | ||
705a415f LP |
846 | if (missing & (SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID)) { |
847 | p = startswith(line, "Uid:"); | |
848 | if (p) { | |
849 | unsigned long uid, euid, suid, fsuid; | |
850 | ||
851 | p += strspn(p, WHITESPACE); | |
852 | if (sscanf(p, "%lu %lu %lu %lu", &uid, &euid, &suid, &fsuid) != 4) | |
853 | return -EIO; | |
854 | ||
f887fa73 LP |
855 | if (missing & SD_BUS_CREDS_UID) |
856 | c->uid = (uid_t) uid; | |
857 | if (missing & SD_BUS_CREDS_EUID) | |
858 | c->euid = (uid_t) euid; | |
859 | if (missing & SD_BUS_CREDS_SUID) | |
860 | c->suid = (uid_t) suid; | |
861 | if (missing & SD_BUS_CREDS_FSUID) | |
862 | c->fsuid = (uid_t) fsuid; | |
863 | ||
705a415f LP |
864 | c->mask |= missing & (SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID); |
865 | continue; | |
866 | } | |
5b12334d | 867 | } |
5b12334d | 868 | |
705a415f LP |
869 | if (missing & (SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID)) { |
870 | p = startswith(line, "Gid:"); | |
871 | if (p) { | |
872 | unsigned long gid, egid, sgid, fsgid; | |
873 | ||
874 | p += strspn(p, WHITESPACE); | |
875 | if (sscanf(p, "%lu %lu %lu %lu", &gid, &egid, &sgid, &fsgid) != 4) | |
876 | return -EIO; | |
877 | ||
f887fa73 LP |
878 | if (missing & SD_BUS_CREDS_GID) |
879 | c->gid = (gid_t) gid; | |
880 | if (missing & SD_BUS_CREDS_EGID) | |
881 | c->egid = (gid_t) egid; | |
882 | if (missing & SD_BUS_CREDS_SGID) | |
883 | c->sgid = (gid_t) sgid; | |
884 | if (missing & SD_BUS_CREDS_FSGID) | |
885 | c->fsgid = (gid_t) fsgid; | |
886 | ||
705a415f LP |
887 | c->mask |= missing & (SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID); |
888 | continue; | |
889 | } | |
5b12334d | 890 | } |
5b12334d | 891 | |
02581590 LP |
892 | if (missing & SD_BUS_CREDS_SUPPLEMENTARY_GIDS) { |
893 | p = startswith(line, "Groups:"); | |
894 | if (p) { | |
895 | size_t allocated = 0; | |
896 | ||
897 | for (;;) { | |
898 | unsigned long g; | |
899 | int n = 0; | |
900 | ||
901 | p += strspn(p, WHITESPACE); | |
902 | if (*p == 0) | |
903 | break; | |
904 | ||
905 | if (sscanf(p, "%lu%n", &g, &n) != 1) | |
906 | return -EIO; | |
907 | ||
908 | if (!GREEDY_REALLOC(c->supplementary_gids, allocated, c->n_supplementary_gids+1)) | |
909 | return -ENOMEM; | |
910 | ||
911 | c->supplementary_gids[c->n_supplementary_gids++] = (gid_t) g; | |
912 | p += n; | |
913 | } | |
914 | ||
915 | c->mask |= SD_BUS_CREDS_SUPPLEMENTARY_GIDS; | |
916 | continue; | |
917 | } | |
918 | } | |
919 | ||
705a415f LP |
920 | if (missing & SD_BUS_CREDS_EFFECTIVE_CAPS) { |
921 | p = startswith(line, "CapEff:"); | |
922 | if (p) { | |
923 | r = parse_caps(c, CAP_OFFSET_EFFECTIVE, p); | |
924 | if (r < 0) | |
925 | return r; | |
5b12334d | 926 | |
705a415f LP |
927 | c->mask |= SD_BUS_CREDS_EFFECTIVE_CAPS; |
928 | continue; | |
929 | } | |
5b12334d | 930 | } |
5b12334d | 931 | |
705a415f LP |
932 | if (missing & SD_BUS_CREDS_PERMITTED_CAPS) { |
933 | p = startswith(line, "CapPrm:"); | |
934 | if (p) { | |
935 | r = parse_caps(c, CAP_OFFSET_PERMITTED, p); | |
936 | if (r < 0) | |
937 | return r; | |
5b12334d | 938 | |
705a415f LP |
939 | c->mask |= SD_BUS_CREDS_PERMITTED_CAPS; |
940 | continue; | |
941 | } | |
5b12334d | 942 | } |
5b12334d | 943 | |
705a415f LP |
944 | if (missing & SD_BUS_CREDS_INHERITABLE_CAPS) { |
945 | p = startswith(line, "CapInh:"); | |
946 | if (p) { | |
947 | r = parse_caps(c, CAP_OFFSET_INHERITABLE, p); | |
948 | if (r < 0) | |
949 | return r; | |
5b12334d | 950 | |
705a415f LP |
951 | c->mask |= SD_BUS_CREDS_INHERITABLE_CAPS; |
952 | continue; | |
953 | } | |
5b12334d | 954 | } |
5b12334d | 955 | |
705a415f LP |
956 | if (missing & SD_BUS_CREDS_BOUNDING_CAPS) { |
957 | p = startswith(line, "CapBnd:"); | |
958 | if (p) { | |
959 | r = parse_caps(c, CAP_OFFSET_BOUNDING, p); | |
960 | if (r < 0) | |
961 | return r; | |
5b12334d | 962 | |
705a415f LP |
963 | c->mask |= SD_BUS_CREDS_BOUNDING_CAPS; |
964 | continue; | |
965 | } | |
5b12334d LP |
966 | } |
967 | } | |
968 | } | |
969 | } | |
970 | ||
5b12334d LP |
971 | if (missing & SD_BUS_CREDS_SELINUX_CONTEXT) { |
972 | const char *p; | |
973 | ||
974 | p = procfs_file_alloca(pid, "attr/current"); | |
975 | r = read_one_line_file(p, &c->label); | |
705a415f | 976 | if (r < 0) { |
945c2931 | 977 | if (!IN_SET(r, -ENOENT, -EINVAL, -EPERM, -EACCES)) |
705a415f LP |
978 | return r; |
979 | } else | |
5b12334d LP |
980 | c->mask |= SD_BUS_CREDS_SELINUX_CONTEXT; |
981 | } | |
982 | ||
983 | if (missing & SD_BUS_CREDS_COMM) { | |
984 | r = get_process_comm(pid, &c->comm); | |
705a415f | 985 | if (r < 0) { |
945c2931 | 986 | if (!IN_SET(r, -EPERM, -EACCES)) |
705a415f LP |
987 | return r; |
988 | } else | |
989 | c->mask |= SD_BUS_CREDS_COMM; | |
5b12334d LP |
990 | } |
991 | ||
992 | if (missing & SD_BUS_CREDS_EXE) { | |
993 | r = get_process_exe(pid, &c->exe); | |
cfeaa44a | 994 | if (r == -ESRCH) { |
45afd519 | 995 | /* Unfortunately we cannot really distinguish |
cfeaa44a LP |
996 | * the case here where the process does not |
997 | * exist, and /proc/$PID/exe being unreadable | |
998 | * because $PID is a kernel thread. Hence, | |
999 | * assume it is a kernel thread, and rely on | |
1000 | * that this case is caught with a later | |
1001 | * call. */ | |
1002 | c->exe = NULL; | |
1003 | c->mask |= SD_BUS_CREDS_EXE; | |
1004 | } else if (r < 0) { | |
945c2931 | 1005 | if (!IN_SET(r, -EPERM, -EACCES)) |
705a415f LP |
1006 | return r; |
1007 | } else | |
1008 | c->mask |= SD_BUS_CREDS_EXE; | |
5b12334d LP |
1009 | } |
1010 | ||
1011 | if (missing & SD_BUS_CREDS_CMDLINE) { | |
1012 | const char *p; | |
1013 | ||
1014 | p = procfs_file_alloca(pid, "cmdline"); | |
49b832c5 | 1015 | r = read_full_file(p, &c->cmdline, &c->cmdline_size); |
cfeaa44a LP |
1016 | if (r == -ENOENT) |
1017 | return -ESRCH; | |
705a415f | 1018 | if (r < 0) { |
945c2931 | 1019 | if (!IN_SET(r, -EPERM, -EACCES)) |
705a415f LP |
1020 | return r; |
1021 | } else { | |
ece174c5 | 1022 | if (c->cmdline_size == 0) |
a1e58e8e | 1023 | c->cmdline = mfree(c->cmdline); |
cfeaa44a LP |
1024 | |
1025 | c->mask |= SD_BUS_CREDS_CMDLINE; | |
705a415f | 1026 | } |
5b12334d LP |
1027 | } |
1028 | ||
1029 | if (tid > 0 && (missing & SD_BUS_CREDS_TID_COMM)) { | |
1030 | _cleanup_free_ char *p = NULL; | |
1031 | ||
de0671ee | 1032 | if (asprintf(&p, "/proc/"PID_FMT"/task/"PID_FMT"/comm", pid, tid) < 0) |
5b12334d LP |
1033 | return -ENOMEM; |
1034 | ||
1035 | r = read_one_line_file(p, &c->tid_comm); | |
cfeaa44a LP |
1036 | if (r == -ENOENT) |
1037 | return -ESRCH; | |
705a415f | 1038 | if (r < 0) { |
945c2931 | 1039 | if (!IN_SET(r, -EPERM, -EACCES)) |
705a415f LP |
1040 | return r; |
1041 | } else | |
1042 | c->mask |= SD_BUS_CREDS_TID_COMM; | |
5b12334d LP |
1043 | } |
1044 | ||
329ac4bc | 1045 | if (missing & (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_USER_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID)) { |
5b12334d | 1046 | |
822d9b6e LP |
1047 | if (!c->cgroup) { |
1048 | r = cg_pid_get_path(NULL, pid, &c->cgroup); | |
1049 | if (r < 0) { | |
945c2931 | 1050 | if (!IN_SET(r, -EPERM, -EACCES)) |
822d9b6e LP |
1051 | return r; |
1052 | } | |
1053 | } | |
1054 | ||
1055 | if (!c->cgroup_root) { | |
705a415f LP |
1056 | r = cg_get_root_path(&c->cgroup_root); |
1057 | if (r < 0) | |
1058 | return r; | |
822d9b6e | 1059 | } |
705a415f | 1060 | |
822d9b6e | 1061 | if (c->cgroup) |
329ac4bc | 1062 | c->mask |= missing & (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_USER_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID); |
5b12334d LP |
1063 | } |
1064 | ||
1065 | if (missing & SD_BUS_CREDS_AUDIT_SESSION_ID) { | |
1066 | r = audit_session_from_pid(pid, &c->audit_session_id); | |
d7e46e01 LP |
1067 | if (r == -ENODATA) { |
1068 | /* ENODATA means: no audit session id assigned */ | |
cfeaa44a LP |
1069 | c->audit_session_id = AUDIT_SESSION_INVALID; |
1070 | c->mask |= SD_BUS_CREDS_AUDIT_SESSION_ID; | |
1071 | } else if (r < 0) { | |
945c2931 | 1072 | if (!IN_SET(r, -EOPNOTSUPP, -ENOENT, -EPERM, -EACCES)) |
705a415f LP |
1073 | return r; |
1074 | } else | |
5b12334d LP |
1075 | c->mask |= SD_BUS_CREDS_AUDIT_SESSION_ID; |
1076 | } | |
1077 | ||
1078 | if (missing & SD_BUS_CREDS_AUDIT_LOGIN_UID) { | |
1079 | r = audit_loginuid_from_pid(pid, &c->audit_login_uid); | |
d7e46e01 LP |
1080 | if (r == -ENODATA) { |
1081 | /* ENODATA means: no audit login uid assigned */ | |
cfeaa44a LP |
1082 | c->audit_login_uid = UID_INVALID; |
1083 | c->mask |= SD_BUS_CREDS_AUDIT_LOGIN_UID; | |
1084 | } else if (r < 0) { | |
945c2931 | 1085 | if (!IN_SET(r, -EOPNOTSUPP, -ENOENT, -EPERM, -EACCES)) |
705a415f LP |
1086 | return r; |
1087 | } else | |
5b12334d LP |
1088 | c->mask |= SD_BUS_CREDS_AUDIT_LOGIN_UID; |
1089 | } | |
1090 | ||
4761e880 LP |
1091 | if (missing & SD_BUS_CREDS_TTY) { |
1092 | r = get_ctty(pid, NULL, &c->tty); | |
cfeaa44a LP |
1093 | if (r == -ENXIO) { |
1094 | /* ENXIO means: process has no controlling TTY */ | |
1095 | c->tty = NULL; | |
1096 | c->mask |= SD_BUS_CREDS_TTY; | |
1097 | } else if (r < 0) { | |
945c2931 | 1098 | if (!IN_SET(r, -EPERM, -EACCES, -ENOENT)) |
4761e880 LP |
1099 | return r; |
1100 | } else | |
1101 | c->mask |= SD_BUS_CREDS_TTY; | |
1102 | } | |
1103 | ||
cfeaa44a | 1104 | /* In case only the exe path was to be read we cannot |
45afd519 | 1105 | * distinguish the case where the exe path was unreadable |
cfeaa44a LP |
1106 | * because the process was a kernel thread, or when the |
1107 | * process didn't exist at all. Hence, let's do a final check, | |
1108 | * to be sure. */ | |
1109 | if (!pid_is_alive(pid)) | |
1110 | return -ESRCH; | |
1111 | ||
1112 | if (tid > 0 && tid != pid && !pid_is_unwaited(tid)) | |
1113 | return -ESRCH; | |
1114 | ||
0f514420 LP |
1115 | c->augmented = missing & c->mask; |
1116 | ||
5b12334d LP |
1117 | return 0; |
1118 | } | |
1119 | ||
49b832c5 | 1120 | int bus_creds_extend_by_pid(sd_bus_creds *c, uint64_t mask, sd_bus_creds **ret) { |
4afd3348 | 1121 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *n = NULL; |
5b12334d LP |
1122 | int r; |
1123 | ||
49b832c5 LP |
1124 | assert(c); |
1125 | assert(ret); | |
5b12334d | 1126 | |
705a415f LP |
1127 | if ((mask & ~c->mask) == 0 || (!(mask & SD_BUS_CREDS_AUGMENT))) { |
1128 | /* There's already all data we need, or augmentation | |
1129 | * wasn't turned on. */ | |
5b12334d LP |
1130 | |
1131 | *ret = sd_bus_creds_ref(c); | |
1132 | return 0; | |
1133 | } | |
1134 | ||
1135 | n = bus_creds_new(); | |
1136 | if (!n) | |
1137 | return -ENOMEM; | |
1138 | ||
1139 | /* Copy the original data over */ | |
1140 | ||
da634f97 LP |
1141 | if (c->mask & mask & SD_BUS_CREDS_PID) { |
1142 | n->pid = c->pid; | |
1143 | n->mask |= SD_BUS_CREDS_PID; | |
1144 | } | |
1145 | ||
1146 | if (c->mask & mask & SD_BUS_CREDS_TID) { | |
1147 | n->tid = c->tid; | |
1148 | n->mask |= SD_BUS_CREDS_TID; | |
1149 | } | |
1150 | ||
1386e47d LP |
1151 | if (c->mask & mask & SD_BUS_CREDS_PPID) { |
1152 | n->ppid = c->ppid; | |
1153 | n->mask |= SD_BUS_CREDS_PPID; | |
1154 | } | |
1155 | ||
5b12334d LP |
1156 | if (c->mask & mask & SD_BUS_CREDS_UID) { |
1157 | n->uid = c->uid; | |
1158 | n->mask |= SD_BUS_CREDS_UID; | |
1159 | } | |
1160 | ||
705a415f LP |
1161 | if (c->mask & mask & SD_BUS_CREDS_EUID) { |
1162 | n->euid = c->euid; | |
1163 | n->mask |= SD_BUS_CREDS_EUID; | |
1164 | } | |
1165 | ||
1166 | if (c->mask & mask & SD_BUS_CREDS_SUID) { | |
1167 | n->suid = c->suid; | |
1168 | n->mask |= SD_BUS_CREDS_SUID; | |
1169 | } | |
1170 | ||
1171 | if (c->mask & mask & SD_BUS_CREDS_FSUID) { | |
1172 | n->fsuid = c->fsuid; | |
1173 | n->mask |= SD_BUS_CREDS_FSUID; | |
1174 | } | |
1175 | ||
5b12334d LP |
1176 | if (c->mask & mask & SD_BUS_CREDS_GID) { |
1177 | n->gid = c->gid; | |
1178 | n->mask |= SD_BUS_CREDS_GID; | |
1179 | } | |
1180 | ||
705a415f LP |
1181 | if (c->mask & mask & SD_BUS_CREDS_EGID) { |
1182 | n->egid = c->egid; | |
1183 | n->mask |= SD_BUS_CREDS_EGID; | |
1184 | } | |
1185 | ||
1186 | if (c->mask & mask & SD_BUS_CREDS_SGID) { | |
1187 | n->sgid = c->sgid; | |
1188 | n->mask |= SD_BUS_CREDS_SGID; | |
1189 | } | |
1190 | ||
1191 | if (c->mask & mask & SD_BUS_CREDS_FSGID) { | |
1192 | n->fsgid = c->fsgid; | |
1193 | n->mask |= SD_BUS_CREDS_FSGID; | |
1194 | } | |
1195 | ||
02581590 | 1196 | if (c->mask & mask & SD_BUS_CREDS_SUPPLEMENTARY_GIDS) { |
cfeaa44a LP |
1197 | if (c->supplementary_gids) { |
1198 | n->supplementary_gids = newdup(gid_t, c->supplementary_gids, c->n_supplementary_gids); | |
1199 | if (!n->supplementary_gids) | |
1200 | return -ENOMEM; | |
1201 | n->n_supplementary_gids = c->n_supplementary_gids; | |
1202 | } else { | |
1203 | n->supplementary_gids = NULL; | |
1204 | n->n_supplementary_gids = 0; | |
1205 | } | |
1206 | ||
02581590 LP |
1207 | n->mask |= SD_BUS_CREDS_SUPPLEMENTARY_GIDS; |
1208 | } | |
1209 | ||
5b12334d | 1210 | if (c->mask & mask & SD_BUS_CREDS_COMM) { |
cfeaa44a LP |
1211 | assert(c->comm); |
1212 | ||
5b12334d LP |
1213 | n->comm = strdup(c->comm); |
1214 | if (!n->comm) | |
1215 | return -ENOMEM; | |
1216 | ||
1217 | n->mask |= SD_BUS_CREDS_COMM; | |
1218 | } | |
1219 | ||
1220 | if (c->mask & mask & SD_BUS_CREDS_TID_COMM) { | |
cfeaa44a LP |
1221 | assert(c->tid_comm); |
1222 | ||
5b12334d LP |
1223 | n->tid_comm = strdup(c->tid_comm); |
1224 | if (!n->tid_comm) | |
1225 | return -ENOMEM; | |
1226 | ||
1227 | n->mask |= SD_BUS_CREDS_TID_COMM; | |
1228 | } | |
1229 | ||
1230 | if (c->mask & mask & SD_BUS_CREDS_EXE) { | |
cfeaa44a LP |
1231 | if (c->exe) { |
1232 | n->exe = strdup(c->exe); | |
1233 | if (!n->exe) | |
1234 | return -ENOMEM; | |
1235 | } else | |
1236 | n->exe = NULL; | |
5b12334d LP |
1237 | |
1238 | n->mask |= SD_BUS_CREDS_EXE; | |
1239 | } | |
1240 | ||
1241 | if (c->mask & mask & SD_BUS_CREDS_CMDLINE) { | |
cfeaa44a LP |
1242 | if (c->cmdline) { |
1243 | n->cmdline = memdup(c->cmdline, c->cmdline_size); | |
1244 | if (!n->cmdline) | |
1245 | return -ENOMEM; | |
1246 | ||
1247 | n->cmdline_size = c->cmdline_size; | |
1248 | } else { | |
1249 | n->cmdline = NULL; | |
1250 | n->cmdline_size = 0; | |
1251 | } | |
5b12334d | 1252 | |
5b12334d LP |
1253 | n->mask |= SD_BUS_CREDS_CMDLINE; |
1254 | } | |
1255 | ||
329ac4bc | 1256 | if (c->mask & mask & (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_USER_SLICE|SD_BUS_CREDS_OWNER_UID)) { |
cfeaa44a LP |
1257 | assert(c->cgroup); |
1258 | ||
5b12334d LP |
1259 | n->cgroup = strdup(c->cgroup); |
1260 | if (!n->cgroup) | |
1261 | return -ENOMEM; | |
1262 | ||
751bc6ac LP |
1263 | n->cgroup_root = strdup(c->cgroup_root); |
1264 | if (!n->cgroup_root) | |
1265 | return -ENOMEM; | |
1266 | ||
329ac4bc | 1267 | n->mask |= mask & (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_USER_SLICE|SD_BUS_CREDS_OWNER_UID); |
5b12334d LP |
1268 | } |
1269 | ||
1270 | if (c->mask & mask & (SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS)) { | |
cfeaa44a LP |
1271 | assert(c->capability); |
1272 | ||
34a5d5e5 | 1273 | n->capability = memdup(c->capability, DIV_ROUND_UP(cap_last_cap(), 32U) * 4 * 4); |
5b12334d LP |
1274 | if (!n->capability) |
1275 | return -ENOMEM; | |
1276 | ||
5b12334d LP |
1277 | n->mask |= c->mask & mask & (SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS); |
1278 | } | |
1279 | ||
a6ede528 | 1280 | if (c->mask & mask & SD_BUS_CREDS_SELINUX_CONTEXT) { |
cfeaa44a LP |
1281 | assert(c->label); |
1282 | ||
a6ede528 LP |
1283 | n->label = strdup(c->label); |
1284 | if (!n->label) | |
1285 | return -ENOMEM; | |
1286 | n->mask |= SD_BUS_CREDS_SELINUX_CONTEXT; | |
1287 | } | |
1288 | ||
5b12334d LP |
1289 | if (c->mask & mask & SD_BUS_CREDS_AUDIT_SESSION_ID) { |
1290 | n->audit_session_id = c->audit_session_id; | |
1291 | n->mask |= SD_BUS_CREDS_AUDIT_SESSION_ID; | |
1292 | } | |
5b12334d LP |
1293 | if (c->mask & mask & SD_BUS_CREDS_AUDIT_LOGIN_UID) { |
1294 | n->audit_login_uid = c->audit_login_uid; | |
1295 | n->mask |= SD_BUS_CREDS_AUDIT_LOGIN_UID; | |
1296 | } | |
1297 | ||
4761e880 LP |
1298 | if (c->mask & mask & SD_BUS_CREDS_TTY) { |
1299 | if (c->tty) { | |
1300 | n->tty = strdup(c->tty); | |
1301 | if (!n->tty) | |
1302 | return -ENOMEM; | |
1303 | } else | |
1304 | n->tty = NULL; | |
1305 | n->mask |= SD_BUS_CREDS_TTY; | |
1306 | } | |
1307 | ||
49b832c5 | 1308 | if (c->mask & mask & SD_BUS_CREDS_UNIQUE_NAME) { |
cfeaa44a LP |
1309 | assert(c->unique_name); |
1310 | ||
49b832c5 LP |
1311 | n->unique_name = strdup(c->unique_name); |
1312 | if (!n->unique_name) | |
1313 | return -ENOMEM; | |
a6ede528 | 1314 | n->mask |= SD_BUS_CREDS_UNIQUE_NAME; |
49b832c5 LP |
1315 | } |
1316 | ||
1317 | if (c->mask & mask & SD_BUS_CREDS_WELL_KNOWN_NAMES) { | |
cfeaa44a LP |
1318 | if (strv_isempty(c->well_known_names)) |
1319 | n->well_known_names = NULL; | |
1320 | else { | |
1321 | n->well_known_names = strv_copy(c->well_known_names); | |
1322 | if (!n->well_known_names) | |
1323 | return -ENOMEM; | |
1324 | } | |
da634f97 LP |
1325 | n->well_known_names_driver = c->well_known_names_driver; |
1326 | n->well_known_names_local = c->well_known_names_local; | |
a6ede528 LP |
1327 | n->mask |= SD_BUS_CREDS_WELL_KNOWN_NAMES; |
1328 | } | |
1329 | ||
1330 | if (c->mask & mask & SD_BUS_CREDS_DESCRIPTION) { | |
cfeaa44a | 1331 | assert(c->description); |
a6ede528 LP |
1332 | n->description = strdup(c->description); |
1333 | if (!n->description) | |
1334 | return -ENOMEM; | |
1335 | n->mask |= SD_BUS_CREDS_DESCRIPTION; | |
49b832c5 LP |
1336 | } |
1337 | ||
0f514420 LP |
1338 | n->augmented = c->augmented & n->mask; |
1339 | ||
5b12334d LP |
1340 | /* Get more data */ |
1341 | ||
0f514420 | 1342 | r = bus_creds_add_more(n, mask, 0, 0); |
5b12334d LP |
1343 | if (r < 0) |
1344 | return r; | |
1345 | ||
1346 | *ret = n; | |
1347 | n = NULL; | |
1348 | return 0; | |
1349 | } |