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1 | /* SPDX-License-Identifier: LGPL-2.1+ */ | |
2 | /*** | |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2014 Lennart Poettering | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU Lesser General Public License as published by | |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public License | |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
19 | ***/ | |
20 | ||
21 | #include <getopt.h> | |
22 | #include <grp.h> | |
23 | #include <gshadow.h> | |
24 | #include <pwd.h> | |
25 | #include <shadow.h> | |
26 | #include <utmp.h> | |
27 | ||
28 | #include "alloc-util.h" | |
29 | #include "conf-files.h" | |
30 | #include "copy.h" | |
31 | #include "def.h" | |
32 | #include "fd-util.h" | |
33 | #include "fs-util.h" | |
34 | #include "fileio-label.h" | |
35 | #include "format-util.h" | |
36 | #include "hashmap.h" | |
37 | #include "path-util.h" | |
38 | #include "selinux-util.h" | |
39 | #include "smack-util.h" | |
40 | #include "specifier.h" | |
41 | #include "string-util.h" | |
42 | #include "strv.h" | |
43 | #include "uid-range.h" | |
44 | #include "user-util.h" | |
45 | #include "utf8.h" | |
46 | #include "util.h" | |
47 | ||
48 | typedef enum ItemType { | |
49 | ADD_USER = 'u', | |
50 | ADD_GROUP = 'g', | |
51 | ADD_MEMBER = 'm', | |
52 | ADD_RANGE = 'r', | |
53 | } ItemType; | |
54 | typedef struct Item { | |
55 | ItemType type; | |
56 | ||
57 | char *name; | |
58 | char *uid_path; | |
59 | char *gid_path; | |
60 | char *description; | |
61 | char *home; | |
62 | char *shell; | |
63 | ||
64 | gid_t gid; | |
65 | uid_t uid; | |
66 | ||
67 | bool gid_set:1; | |
68 | ||
69 | /* When set the group with the specified gid must exist | |
70 | * and the check if a uid clashes with the gid is skipped. | |
71 | */ | |
72 | bool id_set_strict:1; | |
73 | ||
74 | bool uid_set:1; | |
75 | ||
76 | bool todo_user:1; | |
77 | bool todo_group:1; | |
78 | } Item; | |
79 | ||
80 | static char *arg_root = NULL; | |
81 | static const char *arg_replace = NULL; | |
82 | static bool arg_inline = false; | |
83 | ||
84 | static const char conf_file_dirs[] = CONF_PATHS_NULSTR("sysusers.d"); | |
85 | ||
86 | static OrderedHashmap *users = NULL, *groups = NULL; | |
87 | static OrderedHashmap *todo_uids = NULL, *todo_gids = NULL; | |
88 | static OrderedHashmap *members = NULL; | |
89 | ||
90 | static Hashmap *database_uid = NULL, *database_user = NULL; | |
91 | static Hashmap *database_gid = NULL, *database_group = NULL; | |
92 | ||
93 | static uid_t search_uid = UID_INVALID; | |
94 | static UidRange *uid_range = NULL; | |
95 | static unsigned n_uid_range = 0; | |
96 | ||
97 | static int load_user_database(void) { | |
98 | _cleanup_fclose_ FILE *f = NULL; | |
99 | const char *passwd_path; | |
100 | struct passwd *pw; | |
101 | int r; | |
102 | ||
103 | passwd_path = prefix_roota(arg_root, "/etc/passwd"); | |
104 | f = fopen(passwd_path, "re"); | |
105 | if (!f) | |
106 | return errno == ENOENT ? 0 : -errno; | |
107 | ||
108 | r = hashmap_ensure_allocated(&database_user, &string_hash_ops); | |
109 | if (r < 0) | |
110 | return r; | |
111 | ||
112 | r = hashmap_ensure_allocated(&database_uid, NULL); | |
113 | if (r < 0) | |
114 | return r; | |
115 | ||
116 | errno = 0; | |
117 | while ((pw = fgetpwent(f))) { | |
118 | char *n; | |
119 | int k, q; | |
120 | ||
121 | n = strdup(pw->pw_name); | |
122 | if (!n) | |
123 | return -ENOMEM; | |
124 | ||
125 | k = hashmap_put(database_user, n, UID_TO_PTR(pw->pw_uid)); | |
126 | if (k < 0 && k != -EEXIST) { | |
127 | free(n); | |
128 | return k; | |
129 | } | |
130 | ||
131 | q = hashmap_put(database_uid, UID_TO_PTR(pw->pw_uid), n); | |
132 | if (q < 0 && q != -EEXIST) { | |
133 | if (k < 0) | |
134 | free(n); | |
135 | return q; | |
136 | } | |
137 | ||
138 | if (q < 0 && k < 0) | |
139 | free(n); | |
140 | ||
141 | errno = 0; | |
142 | } | |
143 | if (!IN_SET(errno, 0, ENOENT)) | |
144 | return -errno; | |
145 | ||
146 | return 0; | |
147 | } | |
148 | ||
149 | static int load_group_database(void) { | |
150 | _cleanup_fclose_ FILE *f = NULL; | |
151 | const char *group_path; | |
152 | struct group *gr; | |
153 | int r; | |
154 | ||
155 | group_path = prefix_roota(arg_root, "/etc/group"); | |
156 | f = fopen(group_path, "re"); | |
157 | if (!f) | |
158 | return errno == ENOENT ? 0 : -errno; | |
159 | ||
160 | r = hashmap_ensure_allocated(&database_group, &string_hash_ops); | |
161 | if (r < 0) | |
162 | return r; | |
163 | ||
164 | r = hashmap_ensure_allocated(&database_gid, NULL); | |
165 | if (r < 0) | |
166 | return r; | |
167 | ||
168 | errno = 0; | |
169 | while ((gr = fgetgrent(f))) { | |
170 | char *n; | |
171 | int k, q; | |
172 | ||
173 | n = strdup(gr->gr_name); | |
174 | if (!n) | |
175 | return -ENOMEM; | |
176 | ||
177 | k = hashmap_put(database_group, n, GID_TO_PTR(gr->gr_gid)); | |
178 | if (k < 0 && k != -EEXIST) { | |
179 | free(n); | |
180 | return k; | |
181 | } | |
182 | ||
183 | q = hashmap_put(database_gid, GID_TO_PTR(gr->gr_gid), n); | |
184 | if (q < 0 && q != -EEXIST) { | |
185 | if (k < 0) | |
186 | free(n); | |
187 | return q; | |
188 | } | |
189 | ||
190 | if (q < 0 && k < 0) | |
191 | free(n); | |
192 | ||
193 | errno = 0; | |
194 | } | |
195 | if (!IN_SET(errno, 0, ENOENT)) | |
196 | return -errno; | |
197 | ||
198 | return 0; | |
199 | } | |
200 | ||
201 | static int make_backup(const char *target, const char *x) { | |
202 | _cleanup_close_ int src = -1; | |
203 | _cleanup_fclose_ FILE *dst = NULL; | |
204 | _cleanup_free_ char *temp = NULL; | |
205 | char *backup; | |
206 | struct timespec ts[2]; | |
207 | struct stat st; | |
208 | int r; | |
209 | ||
210 | src = open(x, O_RDONLY|O_CLOEXEC|O_NOCTTY); | |
211 | if (src < 0) { | |
212 | if (errno == ENOENT) /* No backup necessary... */ | |
213 | return 0; | |
214 | ||
215 | return -errno; | |
216 | } | |
217 | ||
218 | if (fstat(src, &st) < 0) | |
219 | return -errno; | |
220 | ||
221 | r = fopen_temporary_label(target, x, &dst, &temp); | |
222 | if (r < 0) | |
223 | return r; | |
224 | ||
225 | r = copy_bytes(src, fileno(dst), (uint64_t) -1, COPY_REFLINK); | |
226 | if (r < 0) | |
227 | goto fail; | |
228 | ||
229 | /* Don't fail on chmod() or chown(). If it stays owned by us | |
230 | * and/or unreadable by others, then it isn't too bad... */ | |
231 | ||
232 | backup = strjoina(x, "-"); | |
233 | ||
234 | /* Copy over the access mask */ | |
235 | if (fchmod(fileno(dst), st.st_mode & 07777) < 0) | |
236 | log_warning_errno(errno, "Failed to change mode on %s: %m", backup); | |
237 | ||
238 | if (fchown(fileno(dst), st.st_uid, st.st_gid)< 0) | |
239 | log_warning_errno(errno, "Failed to change ownership of %s: %m", backup); | |
240 | ||
241 | ts[0] = st.st_atim; | |
242 | ts[1] = st.st_mtim; | |
243 | if (futimens(fileno(dst), ts) < 0) | |
244 | log_warning_errno(errno, "Failed to fix access and modification time of %s: %m", backup); | |
245 | ||
246 | r = fflush_sync_and_check(dst); | |
247 | if (r < 0) | |
248 | goto fail; | |
249 | ||
250 | if (rename(temp, backup) < 0) { | |
251 | r = -errno; | |
252 | goto fail; | |
253 | } | |
254 | ||
255 | return 0; | |
256 | ||
257 | fail: | |
258 | unlink(temp); | |
259 | return r; | |
260 | } | |
261 | ||
262 | static int putgrent_with_members(const struct group *gr, FILE *group) { | |
263 | char **a; | |
264 | ||
265 | assert(gr); | |
266 | assert(group); | |
267 | ||
268 | a = ordered_hashmap_get(members, gr->gr_name); | |
269 | if (a) { | |
270 | _cleanup_strv_free_ char **l = NULL; | |
271 | bool added = false; | |
272 | char **i; | |
273 | ||
274 | l = strv_copy(gr->gr_mem); | |
275 | if (!l) | |
276 | return -ENOMEM; | |
277 | ||
278 | STRV_FOREACH(i, a) { | |
279 | if (strv_find(l, *i)) | |
280 | continue; | |
281 | ||
282 | if (strv_extend(&l, *i) < 0) | |
283 | return -ENOMEM; | |
284 | ||
285 | added = true; | |
286 | } | |
287 | ||
288 | if (added) { | |
289 | struct group t; | |
290 | ||
291 | strv_uniq(l); | |
292 | strv_sort(l); | |
293 | ||
294 | t = *gr; | |
295 | t.gr_mem = l; | |
296 | ||
297 | errno = 0; | |
298 | if (putgrent(&t, group) != 0) | |
299 | return errno > 0 ? -errno : -EIO; | |
300 | ||
301 | return 1; | |
302 | } | |
303 | } | |
304 | ||
305 | errno = 0; | |
306 | if (putgrent(gr, group) != 0) | |
307 | return errno > 0 ? -errno : -EIO; | |
308 | ||
309 | return 0; | |
310 | } | |
311 | ||
312 | #if ENABLE_GSHADOW | |
313 | static int putsgent_with_members(const struct sgrp *sg, FILE *gshadow) { | |
314 | char **a; | |
315 | ||
316 | assert(sg); | |
317 | assert(gshadow); | |
318 | ||
319 | a = ordered_hashmap_get(members, sg->sg_namp); | |
320 | if (a) { | |
321 | _cleanup_strv_free_ char **l = NULL; | |
322 | bool added = false; | |
323 | char **i; | |
324 | ||
325 | l = strv_copy(sg->sg_mem); | |
326 | if (!l) | |
327 | return -ENOMEM; | |
328 | ||
329 | STRV_FOREACH(i, a) { | |
330 | if (strv_find(l, *i)) | |
331 | continue; | |
332 | ||
333 | if (strv_extend(&l, *i) < 0) | |
334 | return -ENOMEM; | |
335 | ||
336 | added = true; | |
337 | } | |
338 | ||
339 | if (added) { | |
340 | struct sgrp t; | |
341 | ||
342 | strv_uniq(l); | |
343 | strv_sort(l); | |
344 | ||
345 | t = *sg; | |
346 | t.sg_mem = l; | |
347 | ||
348 | errno = 0; | |
349 | if (putsgent(&t, gshadow) != 0) | |
350 | return errno > 0 ? -errno : -EIO; | |
351 | ||
352 | return 1; | |
353 | } | |
354 | } | |
355 | ||
356 | errno = 0; | |
357 | if (putsgent(sg, gshadow) != 0) | |
358 | return errno > 0 ? -errno : -EIO; | |
359 | ||
360 | return 0; | |
361 | } | |
362 | #endif | |
363 | ||
364 | static int sync_rights(FILE *from, FILE *to) { | |
365 | struct stat st; | |
366 | ||
367 | if (fstat(fileno(from), &st) < 0) | |
368 | return -errno; | |
369 | ||
370 | if (fchmod(fileno(to), st.st_mode & 07777) < 0) | |
371 | return -errno; | |
372 | ||
373 | if (fchown(fileno(to), st.st_uid, st.st_gid) < 0) | |
374 | return -errno; | |
375 | ||
376 | return 0; | |
377 | } | |
378 | ||
379 | static int rename_and_apply_smack(const char *temp_path, const char *dest_path) { | |
380 | int r = 0; | |
381 | if (rename(temp_path, dest_path) < 0) | |
382 | return -errno; | |
383 | ||
384 | #ifdef SMACK_RUN_LABEL | |
385 | r = mac_smack_apply(dest_path, SMACK_ATTR_ACCESS, SMACK_FLOOR_LABEL); | |
386 | if (r < 0) | |
387 | return r; | |
388 | #endif | |
389 | return r; | |
390 | } | |
391 | ||
392 | static const char* default_shell(uid_t uid) { | |
393 | return uid == 0 ? "/bin/sh" : "/sbin/nologin"; | |
394 | } | |
395 | ||
396 | static int write_temporary_passwd(const char *passwd_path, FILE **tmpfile, char **tmpfile_path) { | |
397 | _cleanup_fclose_ FILE *original = NULL, *passwd = NULL; | |
398 | _cleanup_(unlink_and_freep) char *passwd_tmp = NULL; | |
399 | Iterator iterator; | |
400 | Item *i; | |
401 | int r; | |
402 | ||
403 | if (ordered_hashmap_size(todo_uids) == 0) | |
404 | return 0; | |
405 | ||
406 | r = fopen_temporary_label("/etc/passwd", passwd_path, &passwd, &passwd_tmp); | |
407 | if (r < 0) | |
408 | return r; | |
409 | ||
410 | original = fopen(passwd_path, "re"); | |
411 | if (original) { | |
412 | struct passwd *pw; | |
413 | ||
414 | r = sync_rights(original, passwd); | |
415 | if (r < 0) | |
416 | return r; | |
417 | ||
418 | errno = 0; | |
419 | while ((pw = fgetpwent(original))) { | |
420 | ||
421 | i = ordered_hashmap_get(users, pw->pw_name); | |
422 | if (i && i->todo_user) { | |
423 | log_error("%s: User \"%s\" already exists.", passwd_path, pw->pw_name); | |
424 | return -EEXIST; | |
425 | } | |
426 | ||
427 | if (ordered_hashmap_contains(todo_uids, UID_TO_PTR(pw->pw_uid))) { | |
428 | log_error("%s: Detected collision for UID " UID_FMT ".", passwd_path, pw->pw_uid); | |
429 | return -EEXIST; | |
430 | } | |
431 | ||
432 | errno = 0; | |
433 | if (putpwent(pw, passwd) < 0) | |
434 | return errno ? -errno : -EIO; | |
435 | ||
436 | errno = 0; | |
437 | } | |
438 | if (!IN_SET(errno, 0, ENOENT)) | |
439 | return -errno; | |
440 | ||
441 | } else { | |
442 | if (errno != ENOENT) | |
443 | return -errno; | |
444 | if (fchmod(fileno(passwd), 0644) < 0) | |
445 | return -errno; | |
446 | } | |
447 | ||
448 | ORDERED_HASHMAP_FOREACH(i, todo_uids, iterator) { | |
449 | struct passwd n = { | |
450 | .pw_name = i->name, | |
451 | .pw_uid = i->uid, | |
452 | .pw_gid = i->gid, | |
453 | .pw_gecos = i->description, | |
454 | ||
455 | /* "x" means the password is stored in the shadow file */ | |
456 | .pw_passwd = (char*) "x", | |
457 | ||
458 | /* We default to the root directory as home */ | |
459 | .pw_dir = i->home ? i->home : (char*) "/", | |
460 | ||
461 | /* Initialize the shell to nologin, with one exception: | |
462 | * for root we patch in something special */ | |
463 | .pw_shell = i->shell ?: (char*) default_shell(i->uid), | |
464 | }; | |
465 | ||
466 | errno = 0; | |
467 | if (putpwent(&n, passwd) != 0) | |
468 | return errno ? -errno : -EIO; | |
469 | } | |
470 | ||
471 | r = fflush_and_check(passwd); | |
472 | if (r < 0) | |
473 | return r; | |
474 | ||
475 | *tmpfile = passwd; | |
476 | *tmpfile_path = passwd_tmp; | |
477 | passwd = NULL; | |
478 | passwd_tmp = NULL; | |
479 | return 0; | |
480 | } | |
481 | ||
482 | static int write_temporary_shadow(const char *shadow_path, FILE **tmpfile, char **tmpfile_path) { | |
483 | _cleanup_fclose_ FILE *original = NULL, *shadow = NULL; | |
484 | _cleanup_(unlink_and_freep) char *shadow_tmp = NULL; | |
485 | Iterator iterator; | |
486 | long lstchg; | |
487 | Item *i; | |
488 | int r; | |
489 | ||
490 | if (ordered_hashmap_size(todo_uids) == 0) | |
491 | return 0; | |
492 | ||
493 | r = fopen_temporary_label("/etc/shadow", shadow_path, &shadow, &shadow_tmp); | |
494 | if (r < 0) | |
495 | return r; | |
496 | ||
497 | lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY); | |
498 | ||
499 | original = fopen(shadow_path, "re"); | |
500 | if (original) { | |
501 | struct spwd *sp; | |
502 | ||
503 | r = sync_rights(original, shadow); | |
504 | if (r < 0) | |
505 | return r; | |
506 | ||
507 | errno = 0; | |
508 | while ((sp = fgetspent(original))) { | |
509 | ||
510 | i = ordered_hashmap_get(users, sp->sp_namp); | |
511 | if (i && i->todo_user) { | |
512 | /* we will update the existing entry */ | |
513 | sp->sp_lstchg = lstchg; | |
514 | ||
515 | /* only the /etc/shadow stage is left, so we can | |
516 | * safely remove the item from the todo set */ | |
517 | i->todo_user = false; | |
518 | ordered_hashmap_remove(todo_uids, UID_TO_PTR(i->uid)); | |
519 | } | |
520 | ||
521 | errno = 0; | |
522 | if (putspent(sp, shadow) < 0) | |
523 | return errno ? -errno : -EIO; | |
524 | ||
525 | errno = 0; | |
526 | } | |
527 | if (!IN_SET(errno, 0, ENOENT)) | |
528 | return -errno; | |
529 | ||
530 | } else { | |
531 | if (errno != ENOENT) | |
532 | return -errno; | |
533 | if (fchmod(fileno(shadow), 0000) < 0) | |
534 | return -errno; | |
535 | } | |
536 | ||
537 | ORDERED_HASHMAP_FOREACH(i, todo_uids, iterator) { | |
538 | struct spwd n = { | |
539 | .sp_namp = i->name, | |
540 | .sp_pwdp = (char*) "!!", | |
541 | .sp_lstchg = lstchg, | |
542 | .sp_min = -1, | |
543 | .sp_max = -1, | |
544 | .sp_warn = -1, | |
545 | .sp_inact = -1, | |
546 | .sp_expire = -1, | |
547 | .sp_flag = (unsigned long) -1, /* this appears to be what everybody does ... */ | |
548 | }; | |
549 | ||
550 | errno = 0; | |
551 | if (putspent(&n, shadow) != 0) | |
552 | return errno ? -errno : -EIO; | |
553 | } | |
554 | ||
555 | r = fflush_sync_and_check(shadow); | |
556 | if (r < 0) | |
557 | return r; | |
558 | ||
559 | *tmpfile = shadow; | |
560 | *tmpfile_path = shadow_tmp; | |
561 | shadow = NULL; | |
562 | shadow_tmp = NULL; | |
563 | return 0; | |
564 | } | |
565 | ||
566 | static int write_temporary_group(const char *group_path, FILE **tmpfile, char **tmpfile_path) { | |
567 | _cleanup_fclose_ FILE *original = NULL, *group = NULL; | |
568 | _cleanup_(unlink_and_freep) char *group_tmp = NULL; | |
569 | bool group_changed = false; | |
570 | Iterator iterator; | |
571 | Item *i; | |
572 | int r; | |
573 | ||
574 | if (ordered_hashmap_size(todo_gids) == 0 && ordered_hashmap_size(members) == 0) | |
575 | return 0; | |
576 | ||
577 | r = fopen_temporary_label("/etc/group", group_path, &group, &group_tmp); | |
578 | if (r < 0) | |
579 | return r; | |
580 | ||
581 | original = fopen(group_path, "re"); | |
582 | if (original) { | |
583 | struct group *gr; | |
584 | ||
585 | r = sync_rights(original, group); | |
586 | if (r < 0) | |
587 | return r; | |
588 | ||
589 | errno = 0; | |
590 | while ((gr = fgetgrent(original))) { | |
591 | /* Safety checks against name and GID collisions. Normally, | |
592 | * this should be unnecessary, but given that we look at the | |
593 | * entries anyway here, let's make an extra verification | |
594 | * step that we don't generate duplicate entries. */ | |
595 | ||
596 | i = ordered_hashmap_get(groups, gr->gr_name); | |
597 | if (i && i->todo_group) { | |
598 | log_error("%s: Group \"%s\" already exists.", group_path, gr->gr_name); | |
599 | return -EEXIST; | |
600 | } | |
601 | ||
602 | if (ordered_hashmap_contains(todo_gids, GID_TO_PTR(gr->gr_gid))) { | |
603 | log_error("%s: Detected collision for GID " GID_FMT ".", group_path, gr->gr_gid); | |
604 | return -EEXIST; | |
605 | } | |
606 | ||
607 | r = putgrent_with_members(gr, group); | |
608 | if (r < 0) | |
609 | return r; | |
610 | if (r > 0) | |
611 | group_changed = true; | |
612 | ||
613 | errno = 0; | |
614 | } | |
615 | if (!IN_SET(errno, 0, ENOENT)) | |
616 | return -errno; | |
617 | ||
618 | } else { | |
619 | if (errno != ENOENT) | |
620 | return -errno; | |
621 | if (fchmod(fileno(group), 0644) < 0) | |
622 | return -errno; | |
623 | } | |
624 | ||
625 | ORDERED_HASHMAP_FOREACH(i, todo_gids, iterator) { | |
626 | struct group n = { | |
627 | .gr_name = i->name, | |
628 | .gr_gid = i->gid, | |
629 | .gr_passwd = (char*) "x", | |
630 | }; | |
631 | ||
632 | r = putgrent_with_members(&n, group); | |
633 | if (r < 0) | |
634 | return r; | |
635 | ||
636 | group_changed = true; | |
637 | } | |
638 | ||
639 | r = fflush_sync_and_check(group); | |
640 | if (r < 0) | |
641 | return r; | |
642 | ||
643 | if (group_changed) { | |
644 | *tmpfile = group; | |
645 | *tmpfile_path = group_tmp; | |
646 | group = NULL; | |
647 | group_tmp = NULL; | |
648 | } | |
649 | return 0; | |
650 | } | |
651 | ||
652 | static int write_temporary_gshadow(const char * gshadow_path, FILE **tmpfile, char **tmpfile_path) { | |
653 | #if ENABLE_GSHADOW | |
654 | _cleanup_fclose_ FILE *original = NULL, *gshadow = NULL; | |
655 | _cleanup_(unlink_and_freep) char *gshadow_tmp = NULL; | |
656 | bool group_changed = false; | |
657 | Iterator iterator; | |
658 | Item *i; | |
659 | int r; | |
660 | ||
661 | if (ordered_hashmap_size(todo_gids) == 0 && ordered_hashmap_size(members) == 0) | |
662 | return 0; | |
663 | ||
664 | r = fopen_temporary_label("/etc/gshadow", gshadow_path, &gshadow, &gshadow_tmp); | |
665 | if (r < 0) | |
666 | return r; | |
667 | ||
668 | original = fopen(gshadow_path, "re"); | |
669 | if (original) { | |
670 | struct sgrp *sg; | |
671 | ||
672 | r = sync_rights(original, gshadow); | |
673 | if (r < 0) | |
674 | return r; | |
675 | ||
676 | errno = 0; | |
677 | while ((sg = fgetsgent(original))) { | |
678 | ||
679 | i = ordered_hashmap_get(groups, sg->sg_namp); | |
680 | if (i && i->todo_group) { | |
681 | log_error("%s: Group \"%s\" already exists.", gshadow_path, sg->sg_namp); | |
682 | return -EEXIST; | |
683 | } | |
684 | ||
685 | r = putsgent_with_members(sg, gshadow); | |
686 | if (r < 0) | |
687 | return r; | |
688 | if (r > 0) | |
689 | group_changed = true; | |
690 | ||
691 | errno = 0; | |
692 | } | |
693 | if (!IN_SET(errno, 0, ENOENT)) | |
694 | return -errno; | |
695 | ||
696 | } else { | |
697 | if (errno != ENOENT) | |
698 | return -errno; | |
699 | if (fchmod(fileno(gshadow), 0000) < 0) | |
700 | return -errno; | |
701 | } | |
702 | ||
703 | ORDERED_HASHMAP_FOREACH(i, todo_gids, iterator) { | |
704 | struct sgrp n = { | |
705 | .sg_namp = i->name, | |
706 | .sg_passwd = (char*) "!!", | |
707 | }; | |
708 | ||
709 | r = putsgent_with_members(&n, gshadow); | |
710 | if (r < 0) | |
711 | return r; | |
712 | ||
713 | group_changed = true; | |
714 | } | |
715 | ||
716 | r = fflush_sync_and_check(gshadow); | |
717 | if (r < 0) | |
718 | return r; | |
719 | ||
720 | if (group_changed) { | |
721 | *tmpfile = gshadow; | |
722 | *tmpfile_path = gshadow_tmp; | |
723 | gshadow = NULL; | |
724 | gshadow_tmp = NULL; | |
725 | } | |
726 | return 0; | |
727 | #else | |
728 | return 0; | |
729 | #endif | |
730 | } | |
731 | ||
732 | static int write_files(void) { | |
733 | _cleanup_fclose_ FILE *passwd = NULL, *group = NULL, *shadow = NULL, *gshadow = NULL; | |
734 | _cleanup_(unlink_and_freep) char *passwd_tmp = NULL, *group_tmp = NULL, *shadow_tmp = NULL, *gshadow_tmp = NULL; | |
735 | const char *passwd_path = NULL, *group_path = NULL, *shadow_path = NULL, *gshadow_path = NULL; | |
736 | int r; | |
737 | ||
738 | passwd_path = prefix_roota(arg_root, "/etc/passwd"); | |
739 | shadow_path = prefix_roota(arg_root, "/etc/shadow"); | |
740 | group_path = prefix_roota(arg_root, "/etc/group"); | |
741 | gshadow_path = prefix_roota(arg_root, "/etc/gshadow"); | |
742 | ||
743 | r = write_temporary_group(group_path, &group, &group_tmp); | |
744 | if (r < 0) | |
745 | return r; | |
746 | ||
747 | r = write_temporary_gshadow(gshadow_path, &gshadow, &gshadow_tmp); | |
748 | if (r < 0) | |
749 | return r; | |
750 | ||
751 | r = write_temporary_passwd(passwd_path, &passwd, &passwd_tmp); | |
752 | if (r < 0) | |
753 | return r; | |
754 | ||
755 | r = write_temporary_shadow(shadow_path, &shadow, &shadow_tmp); | |
756 | if (r < 0) | |
757 | return r; | |
758 | ||
759 | /* Make a backup of the old files */ | |
760 | if (group) { | |
761 | r = make_backup("/etc/group", group_path); | |
762 | if (r < 0) | |
763 | return r; | |
764 | } | |
765 | if (gshadow) { | |
766 | r = make_backup("/etc/gshadow", gshadow_path); | |
767 | if (r < 0) | |
768 | return r; | |
769 | } | |
770 | ||
771 | if (passwd) { | |
772 | r = make_backup("/etc/passwd", passwd_path); | |
773 | if (r < 0) | |
774 | return r; | |
775 | } | |
776 | if (shadow) { | |
777 | r = make_backup("/etc/shadow", shadow_path); | |
778 | if (r < 0) | |
779 | return r; | |
780 | } | |
781 | ||
782 | /* And make the new files count */ | |
783 | if (group) { | |
784 | r = rename_and_apply_smack(group_tmp, group_path); | |
785 | if (r < 0) | |
786 | return r; | |
787 | ||
788 | group_tmp = mfree(group_tmp); | |
789 | } | |
790 | if (gshadow) { | |
791 | r = rename_and_apply_smack(gshadow_tmp, gshadow_path); | |
792 | if (r < 0) | |
793 | return r; | |
794 | ||
795 | gshadow_tmp = mfree(gshadow_tmp); | |
796 | } | |
797 | ||
798 | if (passwd) { | |
799 | r = rename_and_apply_smack(passwd_tmp, passwd_path); | |
800 | if (r < 0) | |
801 | return r; | |
802 | ||
803 | passwd_tmp = mfree(passwd_tmp); | |
804 | } | |
805 | if (shadow) { | |
806 | r = rename_and_apply_smack(shadow_tmp, shadow_path); | |
807 | if (r < 0) | |
808 | return r; | |
809 | ||
810 | shadow_tmp = mfree(shadow_tmp); | |
811 | } | |
812 | ||
813 | return 0; | |
814 | } | |
815 | ||
816 | static int uid_is_ok(uid_t uid, const char *name, bool check_with_gid) { | |
817 | struct passwd *p; | |
818 | struct group *g; | |
819 | const char *n; | |
820 | Item *i; | |
821 | ||
822 | /* Let's see if we already have assigned the UID a second time */ | |
823 | if (ordered_hashmap_get(todo_uids, UID_TO_PTR(uid))) | |
824 | return 0; | |
825 | ||
826 | /* Try to avoid using uids that are already used by a group | |
827 | * that doesn't have the same name as our new user. */ | |
828 | if (check_with_gid) { | |
829 | i = ordered_hashmap_get(todo_gids, GID_TO_PTR(uid)); | |
830 | if (i && !streq(i->name, name)) | |
831 | return 0; | |
832 | } | |
833 | ||
834 | /* Let's check the files directly */ | |
835 | if (hashmap_contains(database_uid, UID_TO_PTR(uid))) | |
836 | return 0; | |
837 | ||
838 | if (check_with_gid) { | |
839 | n = hashmap_get(database_gid, GID_TO_PTR(uid)); | |
840 | if (n && !streq(n, name)) | |
841 | return 0; | |
842 | } | |
843 | ||
844 | /* Let's also check via NSS, to avoid UID clashes over LDAP and such, just in case */ | |
845 | if (!arg_root) { | |
846 | errno = 0; | |
847 | p = getpwuid(uid); | |
848 | if (p) | |
849 | return 0; | |
850 | if (!IN_SET(errno, 0, ENOENT)) | |
851 | return -errno; | |
852 | ||
853 | if (check_with_gid) { | |
854 | errno = 0; | |
855 | g = getgrgid((gid_t) uid); | |
856 | if (g) { | |
857 | if (!streq(g->gr_name, name)) | |
858 | return 0; | |
859 | } else if (!IN_SET(errno, 0, ENOENT)) | |
860 | return -errno; | |
861 | } | |
862 | } | |
863 | ||
864 | return 1; | |
865 | } | |
866 | ||
867 | static int root_stat(const char *p, struct stat *st) { | |
868 | const char *fix; | |
869 | ||
870 | fix = prefix_roota(arg_root, p); | |
871 | if (stat(fix, st) < 0) | |
872 | return -errno; | |
873 | ||
874 | return 0; | |
875 | } | |
876 | ||
877 | static int read_id_from_file(Item *i, uid_t *_uid, gid_t *_gid) { | |
878 | struct stat st; | |
879 | bool found_uid = false, found_gid = false; | |
880 | uid_t uid = 0; | |
881 | gid_t gid = 0; | |
882 | ||
883 | assert(i); | |
884 | ||
885 | /* First, try to get the gid directly */ | |
886 | if (_gid && i->gid_path && root_stat(i->gid_path, &st) >= 0) { | |
887 | gid = st.st_gid; | |
888 | found_gid = true; | |
889 | } | |
890 | ||
891 | /* Then, try to get the uid directly */ | |
892 | if ((_uid || (_gid && !found_gid)) | |
893 | && i->uid_path | |
894 | && root_stat(i->uid_path, &st) >= 0) { | |
895 | ||
896 | uid = st.st_uid; | |
897 | found_uid = true; | |
898 | ||
899 | /* If we need the gid, but had no success yet, also derive it from the uid path */ | |
900 | if (_gid && !found_gid) { | |
901 | gid = st.st_gid; | |
902 | found_gid = true; | |
903 | } | |
904 | } | |
905 | ||
906 | /* If that didn't work yet, then let's reuse the gid as uid */ | |
907 | if (_uid && !found_uid && i->gid_path) { | |
908 | ||
909 | if (found_gid) { | |
910 | uid = (uid_t) gid; | |
911 | found_uid = true; | |
912 | } else if (root_stat(i->gid_path, &st) >= 0) { | |
913 | uid = (uid_t) st.st_gid; | |
914 | found_uid = true; | |
915 | } | |
916 | } | |
917 | ||
918 | if (_uid) { | |
919 | if (!found_uid) | |
920 | return 0; | |
921 | ||
922 | *_uid = uid; | |
923 | } | |
924 | ||
925 | if (_gid) { | |
926 | if (!found_gid) | |
927 | return 0; | |
928 | ||
929 | *_gid = gid; | |
930 | } | |
931 | ||
932 | return 1; | |
933 | } | |
934 | ||
935 | static int add_user(Item *i) { | |
936 | void *z; | |
937 | int r; | |
938 | ||
939 | assert(i); | |
940 | ||
941 | /* Check the database directly */ | |
942 | z = hashmap_get(database_user, i->name); | |
943 | if (z) { | |
944 | log_debug("User %s already exists.", i->name); | |
945 | i->uid = PTR_TO_UID(z); | |
946 | i->uid_set = true; | |
947 | return 0; | |
948 | } | |
949 | ||
950 | if (!arg_root) { | |
951 | struct passwd *p; | |
952 | ||
953 | /* Also check NSS */ | |
954 | errno = 0; | |
955 | p = getpwnam(i->name); | |
956 | if (p) { | |
957 | log_debug("User %s already exists.", i->name); | |
958 | i->uid = p->pw_uid; | |
959 | i->uid_set = true; | |
960 | ||
961 | r = free_and_strdup(&i->description, p->pw_gecos); | |
962 | if (r < 0) | |
963 | return log_oom(); | |
964 | ||
965 | return 0; | |
966 | } | |
967 | if (!IN_SET(errno, 0, ENOENT)) | |
968 | return log_error_errno(errno, "Failed to check if user %s already exists: %m", i->name); | |
969 | } | |
970 | ||
971 | /* Try to use the suggested numeric uid */ | |
972 | if (i->uid_set) { | |
973 | r = uid_is_ok(i->uid, i->name, !i->id_set_strict); | |
974 | if (r < 0) | |
975 | return log_error_errno(r, "Failed to verify uid " UID_FMT ": %m", i->uid); | |
976 | if (r == 0) { | |
977 | log_debug("Suggested user ID " UID_FMT " for %s already used.", i->uid, i->name); | |
978 | i->uid_set = false; | |
979 | } | |
980 | } | |
981 | ||
982 | /* If that didn't work, try to read it from the specified path */ | |
983 | if (!i->uid_set) { | |
984 | uid_t c; | |
985 | ||
986 | if (read_id_from_file(i, &c, NULL) > 0) { | |
987 | ||
988 | if (c <= 0 || !uid_range_contains(uid_range, n_uid_range, c)) | |
989 | log_debug("User ID " UID_FMT " of file not suitable for %s.", c, i->name); | |
990 | else { | |
991 | r = uid_is_ok(c, i->name, true); | |
992 | if (r < 0) | |
993 | return log_error_errno(r, "Failed to verify uid " UID_FMT ": %m", i->uid); | |
994 | else if (r > 0) { | |
995 | i->uid = c; | |
996 | i->uid_set = true; | |
997 | } else | |
998 | log_debug("User ID " UID_FMT " of file for %s is already used.", c, i->name); | |
999 | } | |
1000 | } | |
1001 | } | |
1002 | ||
1003 | /* Otherwise, try to reuse the group ID */ | |
1004 | if (!i->uid_set && i->gid_set) { | |
1005 | r = uid_is_ok((uid_t) i->gid, i->name, true); | |
1006 | if (r < 0) | |
1007 | return log_error_errno(r, "Failed to verify uid " UID_FMT ": %m", i->uid); | |
1008 | if (r > 0) { | |
1009 | i->uid = (uid_t) i->gid; | |
1010 | i->uid_set = true; | |
1011 | } | |
1012 | } | |
1013 | ||
1014 | /* And if that didn't work either, let's try to find a free one */ | |
1015 | if (!i->uid_set) { | |
1016 | for (;;) { | |
1017 | r = uid_range_next_lower(uid_range, n_uid_range, &search_uid); | |
1018 | if (r < 0) { | |
1019 | log_error("No free user ID available for %s.", i->name); | |
1020 | return r; | |
1021 | } | |
1022 | ||
1023 | r = uid_is_ok(search_uid, i->name, true); | |
1024 | if (r < 0) | |
1025 | return log_error_errno(r, "Failed to verify uid " UID_FMT ": %m", i->uid); | |
1026 | else if (r > 0) | |
1027 | break; | |
1028 | } | |
1029 | ||
1030 | i->uid_set = true; | |
1031 | i->uid = search_uid; | |
1032 | } | |
1033 | ||
1034 | r = ordered_hashmap_ensure_allocated(&todo_uids, NULL); | |
1035 | if (r < 0) | |
1036 | return log_oom(); | |
1037 | ||
1038 | r = ordered_hashmap_put(todo_uids, UID_TO_PTR(i->uid), i); | |
1039 | if (r < 0) | |
1040 | return log_oom(); | |
1041 | ||
1042 | i->todo_user = true; | |
1043 | log_info("Creating user %s (%s) with uid " UID_FMT " and gid " GID_FMT ".", i->name, strna(i->description), i->uid, i->gid); | |
1044 | ||
1045 | return 0; | |
1046 | } | |
1047 | ||
1048 | static int gid_is_ok(gid_t gid) { | |
1049 | struct group *g; | |
1050 | struct passwd *p; | |
1051 | ||
1052 | if (ordered_hashmap_get(todo_gids, GID_TO_PTR(gid))) | |
1053 | return 0; | |
1054 | ||
1055 | /* Avoid reusing gids that are already used by a different user */ | |
1056 | if (ordered_hashmap_get(todo_uids, UID_TO_PTR(gid))) | |
1057 | return 0; | |
1058 | ||
1059 | if (hashmap_contains(database_gid, GID_TO_PTR(gid))) | |
1060 | return 0; | |
1061 | ||
1062 | if (hashmap_contains(database_uid, UID_TO_PTR(gid))) | |
1063 | return 0; | |
1064 | ||
1065 | if (!arg_root) { | |
1066 | errno = 0; | |
1067 | g = getgrgid(gid); | |
1068 | if (g) | |
1069 | return 0; | |
1070 | if (!IN_SET(errno, 0, ENOENT)) | |
1071 | return -errno; | |
1072 | ||
1073 | errno = 0; | |
1074 | p = getpwuid((uid_t) gid); | |
1075 | if (p) | |
1076 | return 0; | |
1077 | if (!IN_SET(errno, 0, ENOENT)) | |
1078 | return -errno; | |
1079 | } | |
1080 | ||
1081 | return 1; | |
1082 | } | |
1083 | ||
1084 | static int add_group(Item *i) { | |
1085 | void *z; | |
1086 | int r; | |
1087 | ||
1088 | assert(i); | |
1089 | ||
1090 | /* Check the database directly */ | |
1091 | z = hashmap_get(database_group, i->name); | |
1092 | if (z) { | |
1093 | log_debug("Group %s already exists.", i->name); | |
1094 | i->gid = PTR_TO_GID(z); | |
1095 | i->gid_set = true; | |
1096 | return 0; | |
1097 | } | |
1098 | ||
1099 | /* Also check NSS */ | |
1100 | if (!arg_root) { | |
1101 | struct group *g; | |
1102 | ||
1103 | errno = 0; | |
1104 | g = getgrnam(i->name); | |
1105 | if (g) { | |
1106 | log_debug("Group %s already exists.", i->name); | |
1107 | i->gid = g->gr_gid; | |
1108 | i->gid_set = true; | |
1109 | return 0; | |
1110 | } | |
1111 | if (!IN_SET(errno, 0, ENOENT)) | |
1112 | return log_error_errno(errno, "Failed to check if group %s already exists: %m", i->name); | |
1113 | } | |
1114 | ||
1115 | /* Try to use the suggested numeric gid */ | |
1116 | if (i->gid_set) { | |
1117 | r = gid_is_ok(i->gid); | |
1118 | if (r < 0) | |
1119 | return log_error_errno(r, "Failed to verify gid " GID_FMT ": %m", i->gid); | |
1120 | if (i->id_set_strict) { | |
1121 | /* If we require the gid to already exist we can return here: | |
1122 | * r > 0: means the gid does not exist -> fail | |
1123 | * r == 0: means the gid exists -> nothing more to do. | |
1124 | */ | |
1125 | if (r > 0) { | |
1126 | log_error("Failed to create %s: please create GID %d", i->name, i->gid); | |
1127 | return -EINVAL; | |
1128 | } | |
1129 | if (r == 0) | |
1130 | return 0; | |
1131 | } | |
1132 | if (r == 0) { | |
1133 | log_debug("Suggested group ID " GID_FMT " for %s already used.", i->gid, i->name); | |
1134 | i->gid_set = false; | |
1135 | } | |
1136 | } | |
1137 | ||
1138 | /* Try to reuse the numeric uid, if there's one */ | |
1139 | if (!i->gid_set && i->uid_set) { | |
1140 | r = gid_is_ok((gid_t) i->uid); | |
1141 | if (r < 0) | |
1142 | return log_error_errno(r, "Failed to verify gid " GID_FMT ": %m", i->gid); | |
1143 | if (r > 0) { | |
1144 | i->gid = (gid_t) i->uid; | |
1145 | i->gid_set = true; | |
1146 | } | |
1147 | } | |
1148 | ||
1149 | /* If that didn't work, try to read it from the specified path */ | |
1150 | if (!i->gid_set) { | |
1151 | gid_t c; | |
1152 | ||
1153 | if (read_id_from_file(i, NULL, &c) > 0) { | |
1154 | ||
1155 | if (c <= 0 || !uid_range_contains(uid_range, n_uid_range, c)) | |
1156 | log_debug("Group ID " GID_FMT " of file not suitable for %s.", c, i->name); | |
1157 | else { | |
1158 | r = gid_is_ok(c); | |
1159 | if (r < 0) | |
1160 | return log_error_errno(r, "Failed to verify gid " GID_FMT ": %m", i->gid); | |
1161 | else if (r > 0) { | |
1162 | i->gid = c; | |
1163 | i->gid_set = true; | |
1164 | } else | |
1165 | log_debug("Group ID " GID_FMT " of file for %s already used.", c, i->name); | |
1166 | } | |
1167 | } | |
1168 | } | |
1169 | ||
1170 | /* And if that didn't work either, let's try to find a free one */ | |
1171 | if (!i->gid_set) { | |
1172 | for (;;) { | |
1173 | /* We look for new GIDs in the UID pool! */ | |
1174 | r = uid_range_next_lower(uid_range, n_uid_range, &search_uid); | |
1175 | if (r < 0) { | |
1176 | log_error("No free group ID available for %s.", i->name); | |
1177 | return r; | |
1178 | } | |
1179 | ||
1180 | r = gid_is_ok(search_uid); | |
1181 | if (r < 0) | |
1182 | return log_error_errno(r, "Failed to verify gid " GID_FMT ": %m", i->gid); | |
1183 | else if (r > 0) | |
1184 | break; | |
1185 | } | |
1186 | ||
1187 | i->gid_set = true; | |
1188 | i->gid = search_uid; | |
1189 | } | |
1190 | ||
1191 | r = ordered_hashmap_ensure_allocated(&todo_gids, NULL); | |
1192 | if (r < 0) | |
1193 | return log_oom(); | |
1194 | ||
1195 | r = ordered_hashmap_put(todo_gids, GID_TO_PTR(i->gid), i); | |
1196 | if (r < 0) | |
1197 | return log_oom(); | |
1198 | ||
1199 | i->todo_group = true; | |
1200 | log_info("Creating group %s with gid " GID_FMT ".", i->name, i->gid); | |
1201 | ||
1202 | return 0; | |
1203 | } | |
1204 | ||
1205 | static int process_item(Item *i) { | |
1206 | int r; | |
1207 | ||
1208 | assert(i); | |
1209 | ||
1210 | switch (i->type) { | |
1211 | ||
1212 | case ADD_USER: | |
1213 | r = add_group(i); | |
1214 | if (r < 0) | |
1215 | return r; | |
1216 | ||
1217 | return add_user(i); | |
1218 | ||
1219 | case ADD_GROUP: | |
1220 | return add_group(i); | |
1221 | ||
1222 | default: | |
1223 | assert_not_reached("Unknown item type"); | |
1224 | } | |
1225 | } | |
1226 | ||
1227 | static void item_free(Item *i) { | |
1228 | ||
1229 | if (!i) | |
1230 | return; | |
1231 | ||
1232 | free(i->name); | |
1233 | free(i->uid_path); | |
1234 | free(i->gid_path); | |
1235 | free(i->description); | |
1236 | free(i->home); | |
1237 | free(i->shell); | |
1238 | free(i); | |
1239 | } | |
1240 | ||
1241 | DEFINE_TRIVIAL_CLEANUP_FUNC(Item*, item_free); | |
1242 | ||
1243 | static int add_implicit(void) { | |
1244 | char *g, **l; | |
1245 | Iterator iterator; | |
1246 | int r; | |
1247 | ||
1248 | /* Implicitly create additional users and groups, if they were listed in "m" lines */ | |
1249 | ||
1250 | ORDERED_HASHMAP_FOREACH_KEY(l, g, members, iterator) { | |
1251 | Item *i; | |
1252 | char **m; | |
1253 | ||
1254 | i = ordered_hashmap_get(groups, g); | |
1255 | if (!i) { | |
1256 | _cleanup_(item_freep) Item *j = NULL; | |
1257 | ||
1258 | r = ordered_hashmap_ensure_allocated(&groups, &string_hash_ops); | |
1259 | if (r < 0) | |
1260 | return log_oom(); | |
1261 | ||
1262 | j = new0(Item, 1); | |
1263 | if (!j) | |
1264 | return log_oom(); | |
1265 | ||
1266 | j->type = ADD_GROUP; | |
1267 | j->name = strdup(g); | |
1268 | if (!j->name) | |
1269 | return log_oom(); | |
1270 | ||
1271 | r = ordered_hashmap_put(groups, j->name, j); | |
1272 | if (r < 0) | |
1273 | return log_oom(); | |
1274 | ||
1275 | log_debug("Adding implicit group '%s' due to m line", j->name); | |
1276 | j = NULL; | |
1277 | } | |
1278 | ||
1279 | STRV_FOREACH(m, l) { | |
1280 | ||
1281 | i = ordered_hashmap_get(users, *m); | |
1282 | if (!i) { | |
1283 | _cleanup_(item_freep) Item *j = NULL; | |
1284 | ||
1285 | r = ordered_hashmap_ensure_allocated(&users, &string_hash_ops); | |
1286 | if (r < 0) | |
1287 | return log_oom(); | |
1288 | ||
1289 | j = new0(Item, 1); | |
1290 | if (!j) | |
1291 | return log_oom(); | |
1292 | ||
1293 | j->type = ADD_USER; | |
1294 | j->name = strdup(*m); | |
1295 | if (!j->name) | |
1296 | return log_oom(); | |
1297 | ||
1298 | r = ordered_hashmap_put(users, j->name, j); | |
1299 | if (r < 0) | |
1300 | return log_oom(); | |
1301 | ||
1302 | log_debug("Adding implicit user '%s' due to m line", j->name); | |
1303 | j = NULL; | |
1304 | } | |
1305 | } | |
1306 | } | |
1307 | ||
1308 | return 0; | |
1309 | } | |
1310 | ||
1311 | static bool item_equal(Item *a, Item *b) { | |
1312 | assert(a); | |
1313 | assert(b); | |
1314 | ||
1315 | if (a->type != b->type) | |
1316 | return false; | |
1317 | ||
1318 | if (!streq_ptr(a->name, b->name)) | |
1319 | return false; | |
1320 | ||
1321 | if (!streq_ptr(a->uid_path, b->uid_path)) | |
1322 | return false; | |
1323 | ||
1324 | if (!streq_ptr(a->gid_path, b->gid_path)) | |
1325 | return false; | |
1326 | ||
1327 | if (!streq_ptr(a->description, b->description)) | |
1328 | return false; | |
1329 | ||
1330 | if (a->uid_set != b->uid_set) | |
1331 | return false; | |
1332 | ||
1333 | if (a->uid_set && a->uid != b->uid) | |
1334 | return false; | |
1335 | ||
1336 | if (a->gid_set != b->gid_set) | |
1337 | return false; | |
1338 | ||
1339 | if (a->gid_set && a->gid != b->gid) | |
1340 | return false; | |
1341 | ||
1342 | if (!streq_ptr(a->home, b->home)) | |
1343 | return false; | |
1344 | ||
1345 | if (!streq_ptr(a->shell, b->shell)) | |
1346 | return false; | |
1347 | ||
1348 | return true; | |
1349 | } | |
1350 | ||
1351 | static int parse_line(const char *fname, unsigned line, const char *buffer) { | |
1352 | ||
1353 | static const Specifier specifier_table[] = { | |
1354 | { 'm', specifier_machine_id, NULL }, | |
1355 | { 'b', specifier_boot_id, NULL }, | |
1356 | { 'H', specifier_host_name, NULL }, | |
1357 | { 'v', specifier_kernel_release, NULL }, | |
1358 | {} | |
1359 | }; | |
1360 | ||
1361 | _cleanup_free_ char *action = NULL, | |
1362 | *name = NULL, *resolved_name = NULL, | |
1363 | *id = NULL, *resolved_id = NULL, | |
1364 | *description = NULL, | |
1365 | *home = NULL, | |
1366 | *shell, *resolved_shell = NULL; | |
1367 | _cleanup_(item_freep) Item *i = NULL; | |
1368 | Item *existing; | |
1369 | OrderedHashmap *h; | |
1370 | int r; | |
1371 | const char *p; | |
1372 | ||
1373 | assert(fname); | |
1374 | assert(line >= 1); | |
1375 | assert(buffer); | |
1376 | ||
1377 | /* Parse columns */ | |
1378 | p = buffer; | |
1379 | r = extract_many_words(&p, NULL, EXTRACT_QUOTES, | |
1380 | &action, &name, &id, &description, &home, &shell, NULL); | |
1381 | if (r < 0) { | |
1382 | log_error("[%s:%u] Syntax error.", fname, line); | |
1383 | return r; | |
1384 | } | |
1385 | if (r < 2) { | |
1386 | log_error("[%s:%u] Missing action and name columns.", fname, line); | |
1387 | return -EINVAL; | |
1388 | } | |
1389 | if (!isempty(p)) { | |
1390 | log_error("[%s:%u] Trailing garbage.", fname, line); | |
1391 | return -EINVAL; | |
1392 | } | |
1393 | ||
1394 | /* Verify action */ | |
1395 | if (strlen(action) != 1) { | |
1396 | log_error("[%s:%u] Unknown modifier '%s'", fname, line, action); | |
1397 | return -EINVAL; | |
1398 | } | |
1399 | ||
1400 | if (!IN_SET(action[0], ADD_USER, ADD_GROUP, ADD_MEMBER, ADD_RANGE)) { | |
1401 | log_error("[%s:%u] Unknown command type '%c'.", fname, line, action[0]); | |
1402 | return -EBADMSG; | |
1403 | } | |
1404 | ||
1405 | /* Verify name */ | |
1406 | if (isempty(name) || streq(name, "-")) | |
1407 | name = mfree(name); | |
1408 | ||
1409 | if (name) { | |
1410 | r = specifier_printf(name, specifier_table, NULL, &resolved_name); | |
1411 | if (r < 0) { | |
1412 | log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, name); | |
1413 | return r; | |
1414 | } | |
1415 | ||
1416 | if (!valid_user_group_name(resolved_name)) { | |
1417 | log_error("[%s:%u] '%s' is not a valid user or group name.", fname, line, resolved_name); | |
1418 | return -EINVAL; | |
1419 | } | |
1420 | } | |
1421 | ||
1422 | /* Verify id */ | |
1423 | if (isempty(id) || streq(id, "-")) | |
1424 | id = mfree(id); | |
1425 | ||
1426 | if (id) { | |
1427 | r = specifier_printf(id, specifier_table, NULL, &resolved_id); | |
1428 | if (r < 0) { | |
1429 | log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, name); | |
1430 | return r; | |
1431 | } | |
1432 | } | |
1433 | ||
1434 | /* Verify description */ | |
1435 | if (isempty(description) || streq(description, "-")) | |
1436 | description = mfree(description); | |
1437 | ||
1438 | if (description) { | |
1439 | if (!valid_gecos(description)) { | |
1440 | log_error("[%s:%u] '%s' is not a valid GECOS field.", fname, line, description); | |
1441 | return -EINVAL; | |
1442 | } | |
1443 | } | |
1444 | ||
1445 | /* Verify home */ | |
1446 | if (isempty(home) || streq(home, "-")) | |
1447 | home = mfree(home); | |
1448 | ||
1449 | if (home) { | |
1450 | if (!valid_home(home)) { | |
1451 | log_error("[%s:%u] '%s' is not a valid home directory field.", fname, line, home); | |
1452 | return -EINVAL; | |
1453 | } | |
1454 | } | |
1455 | ||
1456 | /* Verify shell */ | |
1457 | if (isempty(shell) || streq(shell, "-")) | |
1458 | shell = mfree(shell); | |
1459 | ||
1460 | if (shell) { | |
1461 | r = specifier_printf(shell, specifier_table, NULL, &resolved_shell); | |
1462 | if (r < 0) { | |
1463 | log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, shell); | |
1464 | return r; | |
1465 | } | |
1466 | ||
1467 | if (!valid_shell(resolved_shell)) { | |
1468 | log_error("[%s:%u] '%s' is not a valid login shell field.", fname, line, resolved_shell); | |
1469 | return -EINVAL; | |
1470 | } | |
1471 | } | |
1472 | ||
1473 | ||
1474 | switch (action[0]) { | |
1475 | ||
1476 | case ADD_RANGE: | |
1477 | if (resolved_name) { | |
1478 | log_error("[%s:%u] Lines of type 'r' don't take a name field.", fname, line); | |
1479 | return -EINVAL; | |
1480 | } | |
1481 | ||
1482 | if (!resolved_id) { | |
1483 | log_error("[%s:%u] Lines of type 'r' require a ID range in the third field.", fname, line); | |
1484 | return -EINVAL; | |
1485 | } | |
1486 | ||
1487 | if (description || home || shell) { | |
1488 | log_error("[%s:%u] Lines of type '%c' don't take a %s field.", | |
1489 | fname, line, action[0], | |
1490 | description ? "GECOS" : home ? "home directory" : "login shell"); | |
1491 | return -EINVAL; | |
1492 | } | |
1493 | ||
1494 | r = uid_range_add_str(&uid_range, &n_uid_range, resolved_id); | |
1495 | if (r < 0) { | |
1496 | log_error("[%s:%u] Invalid UID range %s.", fname, line, resolved_id); | |
1497 | return -EINVAL; | |
1498 | } | |
1499 | ||
1500 | return 0; | |
1501 | ||
1502 | case ADD_MEMBER: { | |
1503 | char **l; | |
1504 | ||
1505 | /* Try to extend an existing member or group item */ | |
1506 | if (!name) { | |
1507 | log_error("[%s:%u] Lines of type 'm' require a user name in the second field.", fname, line); | |
1508 | return -EINVAL; | |
1509 | } | |
1510 | ||
1511 | if (!resolved_id) { | |
1512 | log_error("[%s:%u] Lines of type 'm' require a group name in the third field.", fname, line); | |
1513 | return -EINVAL; | |
1514 | } | |
1515 | ||
1516 | if (!valid_user_group_name(resolved_id)) { | |
1517 | log_error("[%s:%u] '%s' is not a valid user or group name.", fname, line, resolved_id); | |
1518 | return -EINVAL; | |
1519 | } | |
1520 | ||
1521 | if (description || home || shell) { | |
1522 | log_error("[%s:%u] Lines of type '%c' don't take a %s field.", | |
1523 | fname, line, action[0], | |
1524 | description ? "GECOS" : home ? "home directory" : "login shell"); | |
1525 | return -EINVAL; | |
1526 | } | |
1527 | ||
1528 | r = ordered_hashmap_ensure_allocated(&members, &string_hash_ops); | |
1529 | if (r < 0) | |
1530 | return log_oom(); | |
1531 | ||
1532 | l = ordered_hashmap_get(members, resolved_id); | |
1533 | if (l) { | |
1534 | /* A list for this group name already exists, let's append to it */ | |
1535 | r = strv_push(&l, resolved_name); | |
1536 | if (r < 0) | |
1537 | return log_oom(); | |
1538 | ||
1539 | resolved_name = NULL; | |
1540 | ||
1541 | assert_se(ordered_hashmap_update(members, resolved_id, l) >= 0); | |
1542 | } else { | |
1543 | /* No list for this group name exists yet, create one */ | |
1544 | ||
1545 | l = new0(char *, 2); | |
1546 | if (!l) | |
1547 | return -ENOMEM; | |
1548 | ||
1549 | l[0] = resolved_name; | |
1550 | l[1] = NULL; | |
1551 | ||
1552 | r = ordered_hashmap_put(members, resolved_id, l); | |
1553 | if (r < 0) { | |
1554 | free(l); | |
1555 | return log_oom(); | |
1556 | } | |
1557 | ||
1558 | resolved_id = resolved_name = NULL; | |
1559 | } | |
1560 | ||
1561 | return 0; | |
1562 | } | |
1563 | ||
1564 | case ADD_USER: | |
1565 | if (!name) { | |
1566 | log_error("[%s:%u] Lines of type 'u' require a user name in the second field.", fname, line); | |
1567 | return -EINVAL; | |
1568 | } | |
1569 | ||
1570 | r = ordered_hashmap_ensure_allocated(&users, &string_hash_ops); | |
1571 | if (r < 0) | |
1572 | return log_oom(); | |
1573 | ||
1574 | i = new0(Item, 1); | |
1575 | if (!i) | |
1576 | return log_oom(); | |
1577 | ||
1578 | if (resolved_id) { | |
1579 | if (path_is_absolute(resolved_id)) { | |
1580 | i->uid_path = resolved_id; | |
1581 | resolved_id = NULL; | |
1582 | ||
1583 | path_kill_slashes(i->uid_path); | |
1584 | } else { | |
1585 | _cleanup_free_ char *uid = NULL, *gid = NULL; | |
1586 | if (split_pair(resolved_id, ":", &uid, &gid) == 0) { | |
1587 | r = parse_gid(gid, &i->gid); | |
1588 | if (r < 0) | |
1589 | return log_error_errno(r, "Failed to parse GID: '%s': %m", id); | |
1590 | i->gid_set = true; | |
1591 | i->id_set_strict = true; | |
1592 | free_and_replace(resolved_id, uid); | |
1593 | } | |
1594 | r = parse_uid(resolved_id, &i->uid); | |
1595 | if (r < 0) | |
1596 | return log_error_errno(r, "Failed to parse UID: '%s': %m", id); | |
1597 | ||
1598 | i->uid_set = true; | |
1599 | } | |
1600 | } | |
1601 | ||
1602 | i->description = description; | |
1603 | description = NULL; | |
1604 | ||
1605 | i->home = home; | |
1606 | home = NULL; | |
1607 | ||
1608 | i->shell = resolved_shell; | |
1609 | resolved_shell = NULL; | |
1610 | ||
1611 | h = users; | |
1612 | break; | |
1613 | ||
1614 | case ADD_GROUP: | |
1615 | if (!name) { | |
1616 | log_error("[%s:%u] Lines of type 'g' require a user name in the second field.", fname, line); | |
1617 | return -EINVAL; | |
1618 | } | |
1619 | ||
1620 | if (description || home || shell) { | |
1621 | log_error("[%s:%u] Lines of type '%c' don't take a %s field.", | |
1622 | fname, line, action[0], | |
1623 | description ? "GECOS" : home ? "home directory" : "login shell"); | |
1624 | return -EINVAL; | |
1625 | } | |
1626 | ||
1627 | r = ordered_hashmap_ensure_allocated(&groups, &string_hash_ops); | |
1628 | if (r < 0) | |
1629 | return log_oom(); | |
1630 | ||
1631 | i = new0(Item, 1); | |
1632 | if (!i) | |
1633 | return log_oom(); | |
1634 | ||
1635 | if (resolved_id) { | |
1636 | if (path_is_absolute(resolved_id)) { | |
1637 | i->gid_path = resolved_id; | |
1638 | resolved_id = NULL; | |
1639 | ||
1640 | path_kill_slashes(i->gid_path); | |
1641 | } else { | |
1642 | r = parse_gid(resolved_id, &i->gid); | |
1643 | if (r < 0) | |
1644 | return log_error_errno(r, "Failed to parse GID: '%s': %m", id); | |
1645 | ||
1646 | i->gid_set = true; | |
1647 | } | |
1648 | } | |
1649 | ||
1650 | h = groups; | |
1651 | break; | |
1652 | ||
1653 | default: | |
1654 | return -EBADMSG; | |
1655 | } | |
1656 | ||
1657 | i->type = action[0]; | |
1658 | i->name = resolved_name; | |
1659 | resolved_name = NULL; | |
1660 | ||
1661 | existing = ordered_hashmap_get(h, i->name); | |
1662 | if (existing) { | |
1663 | ||
1664 | /* Two identical items are fine */ | |
1665 | if (!item_equal(existing, i)) | |
1666 | log_warning("Two or more conflicting lines for %s configured, ignoring.", i->name); | |
1667 | ||
1668 | return 0; | |
1669 | } | |
1670 | ||
1671 | r = ordered_hashmap_put(h, i->name, i); | |
1672 | if (r < 0) | |
1673 | return log_oom(); | |
1674 | ||
1675 | i = NULL; | |
1676 | return 0; | |
1677 | } | |
1678 | ||
1679 | static int read_config_file(const char *fn, bool ignore_enoent) { | |
1680 | _cleanup_fclose_ FILE *rf = NULL; | |
1681 | FILE *f = NULL; | |
1682 | char line[LINE_MAX]; | |
1683 | unsigned v = 0; | |
1684 | int r = 0; | |
1685 | ||
1686 | assert(fn); | |
1687 | ||
1688 | if (streq(fn, "-")) | |
1689 | f = stdin; | |
1690 | else { | |
1691 | r = search_and_fopen_nulstr(fn, "re", arg_root, conf_file_dirs, &rf); | |
1692 | if (r < 0) { | |
1693 | if (ignore_enoent && r == -ENOENT) | |
1694 | return 0; | |
1695 | ||
1696 | return log_error_errno(r, "Failed to open '%s', ignoring: %m", fn); | |
1697 | } | |
1698 | ||
1699 | f = rf; | |
1700 | } | |
1701 | ||
1702 | FOREACH_LINE(line, f, break) { | |
1703 | char *l; | |
1704 | int k; | |
1705 | ||
1706 | v++; | |
1707 | ||
1708 | l = strstrip(line); | |
1709 | if (IN_SET(*l, 0, '#')) | |
1710 | continue; | |
1711 | ||
1712 | k = parse_line(fn, v, l); | |
1713 | if (k < 0 && r == 0) | |
1714 | r = k; | |
1715 | } | |
1716 | ||
1717 | if (ferror(f)) { | |
1718 | log_error_errno(errno, "Failed to read from file %s: %m", fn); | |
1719 | if (r == 0) | |
1720 | r = -EIO; | |
1721 | } | |
1722 | ||
1723 | return r; | |
1724 | } | |
1725 | ||
1726 | static void free_database(Hashmap *by_name, Hashmap *by_id) { | |
1727 | char *name; | |
1728 | ||
1729 | for (;;) { | |
1730 | name = hashmap_first(by_id); | |
1731 | if (!name) | |
1732 | break; | |
1733 | ||
1734 | hashmap_remove(by_name, name); | |
1735 | ||
1736 | hashmap_steal_first_key(by_id); | |
1737 | free(name); | |
1738 | } | |
1739 | ||
1740 | while ((name = hashmap_steal_first_key(by_name))) | |
1741 | free(name); | |
1742 | ||
1743 | hashmap_free(by_name); | |
1744 | hashmap_free(by_id); | |
1745 | } | |
1746 | ||
1747 | static void help(void) { | |
1748 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" | |
1749 | "Creates system user accounts.\n\n" | |
1750 | " -h --help Show this help\n" | |
1751 | " --version Show package version\n" | |
1752 | " --root=PATH Operate on an alternate filesystem root\n" | |
1753 | " --replace=PATH Treat arguments as replacement for PATH\n" | |
1754 | " --inline Treat arguments as configuration lines\n" | |
1755 | , program_invocation_short_name); | |
1756 | } | |
1757 | ||
1758 | static int parse_argv(int argc, char *argv[]) { | |
1759 | ||
1760 | enum { | |
1761 | ARG_VERSION = 0x100, | |
1762 | ARG_ROOT, | |
1763 | ARG_REPLACE, | |
1764 | ARG_INLINE, | |
1765 | }; | |
1766 | ||
1767 | static const struct option options[] = { | |
1768 | { "help", no_argument, NULL, 'h' }, | |
1769 | { "version", no_argument, NULL, ARG_VERSION }, | |
1770 | { "root", required_argument, NULL, ARG_ROOT }, | |
1771 | { "replace", required_argument, NULL, ARG_REPLACE }, | |
1772 | { "inline", no_argument, NULL, ARG_INLINE }, | |
1773 | {} | |
1774 | }; | |
1775 | ||
1776 | int c, r; | |
1777 | ||
1778 | assert(argc >= 0); | |
1779 | assert(argv); | |
1780 | ||
1781 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) | |
1782 | ||
1783 | switch (c) { | |
1784 | ||
1785 | case 'h': | |
1786 | help(); | |
1787 | return 0; | |
1788 | ||
1789 | case ARG_VERSION: | |
1790 | return version(); | |
1791 | ||
1792 | case ARG_ROOT: | |
1793 | r = parse_path_argument_and_warn(optarg, true, &arg_root); | |
1794 | if (r < 0) | |
1795 | return r; | |
1796 | break; | |
1797 | ||
1798 | case ARG_REPLACE: | |
1799 | if (!path_is_absolute(optarg) || | |
1800 | !endswith(optarg, ".conf")) { | |
1801 | log_error("The argument to --replace= must an absolute path to a config file"); | |
1802 | return -EINVAL; | |
1803 | } | |
1804 | ||
1805 | arg_replace = optarg; | |
1806 | break; | |
1807 | ||
1808 | case ARG_INLINE: | |
1809 | arg_inline = true; | |
1810 | break; | |
1811 | ||
1812 | case '?': | |
1813 | return -EINVAL; | |
1814 | ||
1815 | default: | |
1816 | assert_not_reached("Unhandled option"); | |
1817 | } | |
1818 | ||
1819 | if (arg_replace && optind >= argc) { | |
1820 | log_error("When --replace= is given, some configuration items must be specified"); | |
1821 | return -EINVAL; | |
1822 | } | |
1823 | ||
1824 | return 1; | |
1825 | } | |
1826 | ||
1827 | static int parse_arguments(char **args) { | |
1828 | char **arg; | |
1829 | unsigned pos = 1; | |
1830 | int r; | |
1831 | ||
1832 | STRV_FOREACH(arg, args) { | |
1833 | if (arg_inline) | |
1834 | /* Use (argument):n, where n==1 for the first positional arg */ | |
1835 | r = parse_line("(argument)", pos, *arg); | |
1836 | else | |
1837 | r = read_config_file(*arg, false); | |
1838 | if (r < 0) | |
1839 | return r; | |
1840 | ||
1841 | pos++; | |
1842 | } | |
1843 | ||
1844 | return 0; | |
1845 | } | |
1846 | ||
1847 | static int read_config_files(const char* dirs, char **args) { | |
1848 | _cleanup_strv_free_ char **files = NULL; | |
1849 | _cleanup_free_ char *p = NULL; | |
1850 | char **f; | |
1851 | int r; | |
1852 | ||
1853 | r = conf_files_list_nulstr(&files, ".conf", arg_root, 0, dirs); | |
1854 | if (r < 0) | |
1855 | return log_error_errno(r, "Failed to enumerate sysusers.d files: %m"); | |
1856 | ||
1857 | if (arg_replace) { | |
1858 | r = conf_files_insert_nulstr(&files, arg_root, dirs, arg_replace); | |
1859 | if (r < 0) | |
1860 | return log_error_errno(r, "Failed to extend sysusers.d file list: %m"); | |
1861 | ||
1862 | p = path_join(arg_root, arg_replace, NULL); | |
1863 | if (!p) | |
1864 | return log_oom(); | |
1865 | } | |
1866 | ||
1867 | STRV_FOREACH(f, files) | |
1868 | if (p && path_equal(*f, p)) { | |
1869 | log_debug("Parsing arguments at position \"%s\"…", *f); | |
1870 | ||
1871 | r = parse_arguments(args); | |
1872 | if (r < 0) | |
1873 | return r; | |
1874 | } else { | |
1875 | log_debug("Reading config file \"%s\"…", *f); | |
1876 | ||
1877 | /* Just warn, ignore result otherwise */ | |
1878 | (void) read_config_file(*f, true); | |
1879 | } | |
1880 | ||
1881 | return 0; | |
1882 | } | |
1883 | ||
1884 | int main(int argc, char *argv[]) { | |
1885 | ||
1886 | _cleanup_close_ int lock = -1; | |
1887 | Iterator iterator; | |
1888 | int r; | |
1889 | Item *i; | |
1890 | char *n; | |
1891 | ||
1892 | r = parse_argv(argc, argv); | |
1893 | if (r <= 0) | |
1894 | goto finish; | |
1895 | ||
1896 | log_set_target(LOG_TARGET_AUTO); | |
1897 | log_parse_environment(); | |
1898 | log_open(); | |
1899 | ||
1900 | umask(0022); | |
1901 | ||
1902 | r = mac_selinux_init(); | |
1903 | if (r < 0) { | |
1904 | log_error_errno(r, "SELinux setup failed: %m"); | |
1905 | goto finish; | |
1906 | } | |
1907 | ||
1908 | /* If command line arguments are specified along with --replace, read all | |
1909 | * configuration files and insert the positional arguments at the specified | |
1910 | * place. Otherwise, if command line arguments are specified, execute just | |
1911 | * them, and finally, without --replace= or any positional arguments, just | |
1912 | * read configuration and execute it. | |
1913 | */ | |
1914 | if (arg_replace || optind >= argc) | |
1915 | r = read_config_files(conf_file_dirs, argv + optind); | |
1916 | else | |
1917 | r = parse_arguments(argv + optind); | |
1918 | if (r < 0) | |
1919 | goto finish; | |
1920 | ||
1921 | /* Let's tell nss-systemd not to synthesize the "root" and "nobody" entries for it, so that our detection | |
1922 | * whether the names or UID/GID area already used otherwise doesn't get confused. After all, even though | |
1923 | * nss-systemd synthesizes these users/groups, they should still appear in /etc/passwd and /etc/group, as the | |
1924 | * synthesizing logic is merely supposed to be fallback for cases where we run with a completely unpopulated | |
1925 | * /etc. */ | |
1926 | if (setenv("SYSTEMD_NSS_BYPASS_SYNTHETIC", "1", 1) < 0) { | |
1927 | r = log_error_errno(errno, "Failed to set SYSTEMD_NSS_BYPASS_SYNTHETIC environment variable: %m"); | |
1928 | goto finish; | |
1929 | } | |
1930 | ||
1931 | if (!uid_range) { | |
1932 | /* Default to default range of 1..SYSTEM_UID_MAX */ | |
1933 | r = uid_range_add(&uid_range, &n_uid_range, 1, SYSTEM_UID_MAX); | |
1934 | if (r < 0) { | |
1935 | log_oom(); | |
1936 | goto finish; | |
1937 | } | |
1938 | } | |
1939 | ||
1940 | r = add_implicit(); | |
1941 | if (r < 0) | |
1942 | goto finish; | |
1943 | ||
1944 | lock = take_etc_passwd_lock(arg_root); | |
1945 | if (lock < 0) { | |
1946 | log_error_errno(lock, "Failed to take /etc/passwd lock: %m"); | |
1947 | goto finish; | |
1948 | } | |
1949 | ||
1950 | r = load_user_database(); | |
1951 | if (r < 0) { | |
1952 | log_error_errno(r, "Failed to load user database: %m"); | |
1953 | goto finish; | |
1954 | } | |
1955 | ||
1956 | r = load_group_database(); | |
1957 | if (r < 0) { | |
1958 | log_error_errno(r, "Failed to read group database: %m"); | |
1959 | goto finish; | |
1960 | } | |
1961 | ||
1962 | ORDERED_HASHMAP_FOREACH(i, groups, iterator) | |
1963 | process_item(i); | |
1964 | ||
1965 | ORDERED_HASHMAP_FOREACH(i, users, iterator) | |
1966 | process_item(i); | |
1967 | ||
1968 | r = write_files(); | |
1969 | if (r < 0) | |
1970 | log_error_errno(r, "Failed to write files: %m"); | |
1971 | ||
1972 | finish: | |
1973 | ordered_hashmap_free_with_destructor(groups, item_free); | |
1974 | ordered_hashmap_free_with_destructor(users, item_free); | |
1975 | ||
1976 | while ((n = ordered_hashmap_first_key(members))) { | |
1977 | strv_free(ordered_hashmap_steal_first(members)); | |
1978 | free(n); | |
1979 | } | |
1980 | ordered_hashmap_free(members); | |
1981 | ||
1982 | ordered_hashmap_free(todo_uids); | |
1983 | ordered_hashmap_free(todo_gids); | |
1984 | ||
1985 | free_database(database_user, database_uid); | |
1986 | free_database(database_group, database_gid); | |
1987 | ||
1988 | free(arg_root); | |
1989 | ||
1990 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; | |
1991 | } |