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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
1b992147 | 2 | |
3f6fd1ba | 3 | #include <getopt.h> |
932ad62b | 4 | #include <utmp.h> |
1b992147 | 5 | |
b5efdb8a | 6 | #include "alloc-util.h" |
d6b4d1c7 | 7 | #include "build.h" |
f461a28d | 8 | #include "chase.h" |
1b992147 | 9 | #include "conf-files.h" |
28db6fbf | 10 | #include "constants.h" |
1b992147 | 11 | #include "copy.h" |
99e9f896 | 12 | #include "creds-util.h" |
0c3ee127 | 13 | #include "dissect-image.h" |
3fa8a114 | 14 | #include "env-util.h" |
a0f29c76 | 15 | #include "fd-util.h" |
ee228be1 | 16 | #include "fileio.h" |
f97b34a6 | 17 | #include "format-util.h" |
dcd5c891 | 18 | #include "fs-util.h" |
3f6fd1ba | 19 | #include "hashmap.h" |
99e9f896 | 20 | #include "libcrypt-util.h" |
71da1673 | 21 | #include "main-func.h" |
99e9f896 | 22 | #include "memory-util.h" |
0c3ee127 | 23 | #include "mount-util.h" |
d481b830 | 24 | #include "nscd-flush.h" |
dcd5c891 | 25 | #include "pager.h" |
614b022c | 26 | #include "parse-argument.h" |
3f6fd1ba | 27 | #include "path-util.h" |
294bf0c3 | 28 | #include "pretty-print.h" |
3f6fd1ba | 29 | #include "selinux-util.h" |
0c3ee127 | 30 | #include "set.h" |
07630cea | 31 | #include "smack-util.h" |
3f6fd1ba | 32 | #include "specifier.h" |
5f465fda | 33 | #include "stat-util.h" |
07630cea | 34 | #include "string-util.h" |
3f6fd1ba | 35 | #include "strv.h" |
bf819d3a | 36 | #include "sync-util.h" |
e4de7287 | 37 | #include "tmpfile-util-label.h" |
8e1ac16b | 38 | #include "uid-classification.h" |
3f6fd1ba | 39 | #include "uid-range.h" |
a0f29c76 | 40 | #include "user-util.h" |
3f6fd1ba | 41 | #include "utf8.h" |
1b992147 LP |
42 | |
43 | typedef enum ItemType { | |
9a5af4b7 ZJS |
44 | ADD_USER = 'u', |
45 | ADD_GROUP = 'g', | |
a12b0cc3 | 46 | ADD_MEMBER = 'm', |
9a5af4b7 | 47 | ADD_RANGE = 'r', |
1b992147 | 48 | } ItemType; |
dcd5c891 | 49 | |
cf1ab844 | 50 | static const char* item_type_to_string(ItemType t) { |
9a5af4b7 ZJS |
51 | switch (t) { |
52 | case ADD_USER: | |
53 | return "user"; | |
54 | case ADD_GROUP: | |
55 | return "group"; | |
56 | case ADD_MEMBER: | |
57 | return "member"; | |
58 | case ADD_RANGE: | |
59 | return "range"; | |
60 | default: | |
61 | assert_not_reached(); | |
62 | } | |
63 | } | |
64 | ||
1b992147 LP |
65 | typedef struct Item { |
66 | ItemType type; | |
67 | ||
68 | char *name; | |
649916d3 | 69 | char *group_name; |
1b992147 LP |
70 | char *uid_path; |
71 | char *gid_path; | |
72 | char *description; | |
7629889c | 73 | char *home; |
7b1aaf66 | 74 | char *shell; |
1b992147 LP |
75 | |
76 | gid_t gid; | |
77 | uid_t uid; | |
78 | ||
9a87bdd7 ZJS |
79 | char *filename; |
80 | unsigned line; | |
81 | ||
616c5354 | 82 | bool gid_set; |
fb959f14 | 83 | |
3f316701 ZJS |
84 | /* When set the group with the specified GID must exist |
85 | * and the check if a UID clashes with the GID is skipped. | |
fb959f14 | 86 | */ |
616c5354 | 87 | bool id_set_strict; |
fb959f14 | 88 | |
616c5354 | 89 | bool uid_set; |
1b992147 | 90 | |
616c5354 ZJS |
91 | bool todo_user; |
92 | bool todo_group; | |
1b992147 LP |
93 | } Item; |
94 | ||
95 | static char *arg_root = NULL; | |
0c3ee127 | 96 | static char *arg_image = NULL; |
918560d7 | 97 | static CatFlags arg_cat_flags = CAT_CONFIG_OFF; |
d16a1c1b | 98 | static const char *arg_replace = NULL; |
64fe1095 | 99 | static bool arg_dry_run = false; |
1b600bd5 | 100 | static bool arg_inline = false; |
0221d68a | 101 | static PagerFlags arg_pager_flags = 0; |
84be0c71 | 102 | static ImagePolicy *arg_image_policy = NULL; |
1b992147 | 103 | |
71da1673 | 104 | STATIC_DESTRUCTOR_REGISTER(arg_root, freep); |
0c3ee127 | 105 | STATIC_DESTRUCTOR_REGISTER(arg_image, freep); |
84be0c71 | 106 | STATIC_DESTRUCTOR_REGISTER(arg_image_policy, image_policy_freep); |
71da1673 | 107 | |
d2a16737 LP |
108 | typedef struct Context { |
109 | OrderedHashmap *users, *groups; | |
110 | OrderedHashmap *todo_uids, *todo_gids; | |
111 | OrderedHashmap *members; | |
112 | ||
113 | Hashmap *database_by_uid, *database_by_username; | |
114 | Hashmap *database_by_gid, *database_by_groupname; | |
115 | ||
116 | /* A helper set to hold names that are used by database_by_{uid,gid,username,groupname} above. */ | |
117 | Set *names; | |
118 | ||
119 | uid_t search_uid; | |
eb7d7d14 | 120 | UIDRange *uid_range; |
d2a16737 LP |
121 | |
122 | UGIDAllocationRange login_defs; | |
123 | bool login_defs_need_warning; | |
124 | } Context; | |
125 | ||
126 | static void context_done(Context *c) { | |
127 | assert(c); | |
128 | ||
129 | ordered_hashmap_free(c->groups); | |
130 | ordered_hashmap_free(c->users); | |
131 | ordered_hashmap_free(c->members); | |
132 | ordered_hashmap_free(c->todo_uids); | |
133 | ordered_hashmap_free(c->todo_gids); | |
134 | ||
135 | hashmap_free(c->database_by_uid); | |
136 | hashmap_free(c->database_by_username); | |
137 | hashmap_free(c->database_by_gid); | |
138 | hashmap_free(c->database_by_groupname); | |
139 | ||
140 | set_free_free(c->names); | |
141 | uid_range_free(c->uid_range); | |
142 | } | |
143 | ||
d2a16737 LP |
144 | static void maybe_emit_login_defs_warning(Context *c) { |
145 | assert(c); | |
146 | ||
147 | if (!c->login_defs_need_warning) | |
4b6f9b20 ZJS |
148 | return; |
149 | ||
d2a16737 LP |
150 | if (c->login_defs.system_alloc_uid_min != SYSTEM_ALLOC_UID_MIN || |
151 | c->login_defs.system_uid_max != SYSTEM_UID_MAX) | |
4b6f9b20 ZJS |
152 | log_warning("login.defs specifies UID allocation range "UID_FMT"–"UID_FMT |
153 | " that is different than the built-in defaults ("UID_FMT"–"UID_FMT")", | |
d2a16737 | 154 | c->login_defs.system_alloc_uid_min, c->login_defs.system_uid_max, |
2676befc | 155 | (uid_t) SYSTEM_ALLOC_UID_MIN, (uid_t) SYSTEM_UID_MAX); |
d2a16737 LP |
156 | if (c->login_defs.system_alloc_gid_min != SYSTEM_ALLOC_GID_MIN || |
157 | c->login_defs.system_gid_max != SYSTEM_GID_MAX) | |
4b6f9b20 ZJS |
158 | log_warning("login.defs specifies GID allocation range "GID_FMT"–"GID_FMT |
159 | " that is different than the built-in defaults ("GID_FMT"–"GID_FMT")", | |
d2a16737 | 160 | c->login_defs.system_alloc_gid_min, c->login_defs.system_gid_max, |
2676befc | 161 | (gid_t) SYSTEM_ALLOC_GID_MIN, (gid_t) SYSTEM_GID_MAX); |
4b6f9b20 | 162 | |
d2a16737 | 163 | c->login_defs_need_warning = false; |
4b6f9b20 ZJS |
164 | } |
165 | ||
d2a16737 | 166 | static int load_user_database(Context *c) { |
1b992147 LP |
167 | _cleanup_fclose_ FILE *f = NULL; |
168 | const char *passwd_path; | |
169 | struct passwd *pw; | |
170 | int r; | |
171 | ||
d2a16737 LP |
172 | assert(c); |
173 | ||
1d13f648 | 174 | passwd_path = prefix_roota(arg_root, "/etc/passwd"); |
1b992147 LP |
175 | f = fopen(passwd_path, "re"); |
176 | if (!f) | |
177 | return errno == ENOENT ? 0 : -errno; | |
178 | ||
d2a16737 | 179 | r = hashmap_ensure_allocated(&c->database_by_username, &string_hash_ops); |
1b992147 LP |
180 | if (r < 0) |
181 | return r; | |
182 | ||
d2a16737 | 183 | r = hashmap_ensure_allocated(&c->database_by_uid, NULL); |
1b992147 LP |
184 | if (r < 0) |
185 | return r; | |
186 | ||
c8e02e40 | 187 | /* Note that we use NULL, i.e. trivial_hash_ops here, so identical strings can exist in the set. */ |
d2a16737 | 188 | r = set_ensure_allocated(&c->names, NULL); |
1b992147 LP |
189 | if (r < 0) |
190 | return r; | |
191 | ||
100d5f6e | 192 | while ((r = fgetpwent_sane(f, &pw)) > 0) { |
1b992147 | 193 | |
c8e02e40 | 194 | char *n = strdup(pw->pw_name); |
1b992147 LP |
195 | if (!n) |
196 | return -ENOMEM; | |
197 | ||
d2a16737 | 198 | r = set_consume(c->names, n); |
c8e02e40 ZJS |
199 | if (r < 0) |
200 | return r; | |
201 | assert(r > 0); /* The set uses pointer comparisons, so n must not be in the set. */ | |
202 | ||
d2a16737 | 203 | r = hashmap_put(c->database_by_username, n, UID_TO_PTR(pw->pw_uid)); |
c8e02e40 ZJS |
204 | if (r == -EEXIST) |
205 | log_debug_errno(r, "%s: user '%s' is listed twice, ignoring duplicate uid.", | |
206 | passwd_path, n); | |
207 | else if (r < 0) | |
208 | return r; | |
209 | ||
d2a16737 | 210 | r = hashmap_put(c->database_by_uid, UID_TO_PTR(pw->pw_uid), n); |
c8e02e40 ZJS |
211 | if (r == -EEXIST) |
212 | log_debug_errno(r, "%s: uid "UID_FMT" is listed twice, ignoring duplicate name.", | |
213 | passwd_path, pw->pw_uid); | |
214 | else if (r < 0) | |
215 | return r; | |
1b992147 | 216 | } |
100d5f6e | 217 | return r; |
1b992147 LP |
218 | } |
219 | ||
d2a16737 | 220 | static int load_group_database(Context *c) { |
1b992147 LP |
221 | _cleanup_fclose_ FILE *f = NULL; |
222 | const char *group_path; | |
223 | struct group *gr; | |
224 | int r; | |
225 | ||
d2a16737 LP |
226 | assert(c); |
227 | ||
1d13f648 | 228 | group_path = prefix_roota(arg_root, "/etc/group"); |
1b992147 LP |
229 | f = fopen(group_path, "re"); |
230 | if (!f) | |
231 | return errno == ENOENT ? 0 : -errno; | |
232 | ||
d2a16737 | 233 | r = hashmap_ensure_allocated(&c->database_by_groupname, &string_hash_ops); |
1b992147 LP |
234 | if (r < 0) |
235 | return r; | |
236 | ||
d2a16737 | 237 | r = hashmap_ensure_allocated(&c->database_by_gid, NULL); |
1b992147 LP |
238 | if (r < 0) |
239 | return r; | |
240 | ||
c8e02e40 | 241 | /* Note that we use NULL, i.e. trivial_hash_ops here, so identical strings can exist in the set. */ |
d2a16737 | 242 | r = set_ensure_allocated(&c->names, NULL); |
1b992147 LP |
243 | if (r < 0) |
244 | return r; | |
245 | ||
f030d36c | 246 | while ((r = fgetgrent_sane(f, &gr)) > 0) { |
1b992147 | 247 | |
c8e02e40 | 248 | char *n = strdup(gr->gr_name); |
1b992147 LP |
249 | if (!n) |
250 | return -ENOMEM; | |
251 | ||
d2a16737 | 252 | r = set_consume(c->names, n); |
c8e02e40 ZJS |
253 | if (r < 0) |
254 | return r; | |
255 | assert(r > 0); /* The set uses pointer comparisons, so n must not be in the set. */ | |
256 | ||
d2a16737 | 257 | r = hashmap_put(c->database_by_groupname, n, GID_TO_PTR(gr->gr_gid)); |
c8e02e40 ZJS |
258 | if (r == -EEXIST) |
259 | log_debug_errno(r, "%s: group '%s' is listed twice, ignoring duplicate gid.", | |
260 | group_path, n); | |
261 | else if (r < 0) | |
262 | return r; | |
263 | ||
d2a16737 | 264 | r = hashmap_put(c->database_by_gid, GID_TO_PTR(gr->gr_gid), n); |
c8e02e40 ZJS |
265 | if (r == -EEXIST) |
266 | log_debug_errno(r, "%s: gid "GID_FMT" is listed twice, ignoring duplicate name.", | |
267 | group_path, gr->gr_gid); | |
268 | else if (r < 0) | |
269 | return r; | |
1b992147 | 270 | } |
f030d36c | 271 | return r; |
1b992147 LP |
272 | } |
273 | ||
9f1c1940 | 274 | static int make_backup(const char *target, const char *x) { |
62c03398 | 275 | _cleanup_(unlink_and_freep) char *dst_tmp = NULL; |
9f1c1940 | 276 | _cleanup_fclose_ FILE *dst = NULL; |
5bb1d7fb | 277 | _cleanup_close_ int src = -EBADF; |
62c03398 | 278 | const char *backup; |
1b992147 LP |
279 | struct stat st; |
280 | int r; | |
281 | ||
62c03398 LP |
282 | assert(target); |
283 | assert(x); | |
284 | ||
1b992147 LP |
285 | src = open(x, O_RDONLY|O_CLOEXEC|O_NOCTTY); |
286 | if (src < 0) { | |
287 | if (errno == ENOENT) /* No backup necessary... */ | |
288 | return 0; | |
289 | ||
290 | return -errno; | |
291 | } | |
292 | ||
293 | if (fstat(src, &st) < 0) | |
294 | return -errno; | |
295 | ||
62c03398 | 296 | r = fopen_temporary_label( |
47fb161e | 297 | target, /* The path for which to the look up the label */ |
62c03398 | 298 | x, /* Where we want the file actually to end up */ |
47fb161e ZJS |
299 | &dst, /* The temporary file we write to */ |
300 | &dst_tmp); | |
9f1c1940 ZJS |
301 | if (r < 0) |
302 | return r; | |
1b992147 | 303 | |
f5fbe71d | 304 | r = copy_bytes(src, fileno(dst), UINT64_MAX, COPY_REFLINK); |
1b992147 | 305 | if (r < 0) |
62c03398 | 306 | return r; |
9f1c1940 | 307 | |
63c372cb | 308 | backup = strjoina(x, "-"); |
9f1c1940 | 309 | |
62c03398 LP |
310 | /* Copy over the access mask. Don't fail on chmod() or chown(). If it stays owned by us and/or |
311 | * unreadable by others, then it isn't too bad... */ | |
b78d7f24 | 312 | r = fchmod_and_chown_with_fallback(fileno(dst), dst_tmp, st.st_mode & 07777, st.st_uid, st.st_gid); |
c039af23 YW |
313 | if (r < 0) |
314 | log_warning_errno(r, "Failed to change access mode or ownership of %s: %m", backup); | |
1b992147 | 315 | |
62c03398 | 316 | if (futimens(fileno(dst), (const struct timespec[2]) { st.st_atim, st.st_mtim }) < 0) |
56f64d95 | 317 | log_warning_errno(errno, "Failed to fix access and modification time of %s: %m", backup); |
1b992147 | 318 | |
62c03398 | 319 | r = fsync_full(fileno(dst)); |
0675e94a | 320 | if (r < 0) |
62c03398 | 321 | return r; |
0675e94a | 322 | |
62c03398 LP |
323 | if (rename(dst_tmp, backup) < 0) |
324 | return errno; | |
1b992147 | 325 | |
7802194a | 326 | dst_tmp = mfree(dst_tmp); /* disable the unlink_and_freep() hook now that the file has been renamed */ |
1b992147 | 327 | return 0; |
1b992147 LP |
328 | } |
329 | ||
d2a16737 LP |
330 | static int putgrent_with_members( |
331 | Context *c, | |
332 | const struct group *gr, | |
333 | FILE *group) { | |
334 | ||
a12b0cc3 | 335 | char **a; |
010cd1dc | 336 | int r; |
a12b0cc3 | 337 | |
d2a16737 | 338 | assert(c); |
a12b0cc3 LP |
339 | assert(gr); |
340 | assert(group); | |
341 | ||
d2a16737 | 342 | a = ordered_hashmap_get(c->members, gr->gr_name); |
a12b0cc3 LP |
343 | if (a) { |
344 | _cleanup_strv_free_ char **l = NULL; | |
345 | bool added = false; | |
a12b0cc3 LP |
346 | |
347 | l = strv_copy(gr->gr_mem); | |
348 | if (!l) | |
349 | return -ENOMEM; | |
350 | ||
351 | STRV_FOREACH(i, a) { | |
d29cc4d6 | 352 | if (strv_contains(l, *i)) |
a12b0cc3 LP |
353 | continue; |
354 | ||
010cd1dc LP |
355 | r = strv_extend(&l, *i); |
356 | if (r < 0) | |
357 | return r; | |
a12b0cc3 LP |
358 | |
359 | added = true; | |
360 | } | |
361 | ||
362 | if (added) { | |
363 | struct group t; | |
364 | ||
365 | strv_uniq(l); | |
366 | strv_sort(l); | |
367 | ||
368 | t = *gr; | |
369 | t.gr_mem = l; | |
370 | ||
100d5f6e FB |
371 | r = putgrent_sane(&t, group); |
372 | return r < 0 ? r : 1; | |
a12b0cc3 LP |
373 | } |
374 | } | |
375 | ||
100d5f6e | 376 | return putgrent_sane(gr, group); |
a12b0cc3 LP |
377 | } |
378 | ||
349cc4a5 | 379 | #if ENABLE_GSHADOW |
d2a16737 LP |
380 | static int putsgent_with_members( |
381 | Context *c, | |
382 | const struct sgrp *sg, | |
383 | FILE *gshadow) { | |
384 | ||
9ab315cc | 385 | char **a; |
010cd1dc | 386 | int r; |
9ab315cc LP |
387 | |
388 | assert(sg); | |
389 | assert(gshadow); | |
390 | ||
d2a16737 | 391 | a = ordered_hashmap_get(c->members, sg->sg_namp); |
9ab315cc LP |
392 | if (a) { |
393 | _cleanup_strv_free_ char **l = NULL; | |
394 | bool added = false; | |
9ab315cc LP |
395 | |
396 | l = strv_copy(sg->sg_mem); | |
397 | if (!l) | |
398 | return -ENOMEM; | |
399 | ||
400 | STRV_FOREACH(i, a) { | |
d29cc4d6 | 401 | if (strv_contains(l, *i)) |
9ab315cc LP |
402 | continue; |
403 | ||
010cd1dc LP |
404 | r = strv_extend(&l, *i); |
405 | if (r < 0) | |
406 | return r; | |
9ab315cc LP |
407 | |
408 | added = true; | |
409 | } | |
410 | ||
411 | if (added) { | |
412 | struct sgrp t; | |
413 | ||
414 | strv_uniq(l); | |
415 | strv_sort(l); | |
416 | ||
417 | t = *sg; | |
418 | t.sg_mem = l; | |
419 | ||
100d5f6e FB |
420 | r = putsgent_sane(&t, gshadow); |
421 | return r < 0 ? r : 1; | |
9ab315cc LP |
422 | } |
423 | } | |
424 | ||
100d5f6e | 425 | return putsgent_sane(sg, gshadow); |
9ab315cc | 426 | } |
b14e1b43 | 427 | #endif |
9ab315cc | 428 | |
5f465fda ZJS |
429 | static const char* pick_shell(const Item *i) { |
430 | if (i->type != ADD_USER) | |
431 | return NULL; | |
432 | if (i->shell) | |
433 | return i->shell; | |
434 | if (i->uid_set && i->uid == 0) | |
8a7adccb | 435 | return default_root_shell(arg_root); |
5f465fda | 436 | return NOLOGIN; |
7b1aaf66 ZJS |
437 | } |
438 | ||
d2a16737 LP |
439 | static int write_temporary_passwd( |
440 | Context *c, | |
441 | const char *passwd_path, | |
442 | FILE **ret_tmpfile, | |
443 | char **ret_tmpfile_path) { | |
444 | ||
b20b0b66 | 445 | _cleanup_fclose_ FILE *original = NULL, *passwd = NULL; |
1dd98a71 | 446 | _cleanup_(unlink_and_freep) char *passwd_tmp = NULL; |
563dc6f8 | 447 | struct passwd *pw = NULL; |
1b992147 LP |
448 | Item *i; |
449 | int r; | |
450 | ||
d2a16737 LP |
451 | assert(c); |
452 | ||
453 | if (ordered_hashmap_isempty(c->todo_uids)) | |
b20b0b66 | 454 | return 0; |
1b992147 | 455 | |
64fe1095 | 456 | if (arg_dry_run) { |
28e5e1e9 | 457 | log_info("Would write /etc/passwd%s", special_glyph(SPECIAL_GLYPH_ELLIPSIS)); |
64fe1095 ZJS |
458 | return 0; |
459 | } | |
460 | ||
b20b0b66 FB |
461 | r = fopen_temporary_label("/etc/passwd", passwd_path, &passwd, &passwd_tmp); |
462 | if (r < 0) | |
335f6ab4 | 463 | return log_debug_errno(r, "Failed to open temporary copy of %s: %m", passwd_path); |
b20b0b66 FB |
464 | |
465 | original = fopen(passwd_path, "re"); | |
466 | if (original) { | |
b20b0b66 | 467 | |
82855aa6 ZJS |
468 | /* Allow fallback path for when /proc is not mounted. On any normal system /proc will be |
469 | * mounted, but e.g. when 'dnf --installroot' is used, it might not be. There is no security | |
470 | * relevance here, since the environment is ultimately trusted, and not requiring /proc makes | |
471 | * it easier to depend on sysusers in packaging scripts and suchlike. */ | |
472 | r = copy_rights_with_fallback(fileno(original), fileno(passwd), passwd_tmp); | |
1b992147 | 473 | if (r < 0) |
335f6ab4 ZJS |
474 | return log_debug_errno(r, "Failed to copy permissions from %s to %s: %m", |
475 | passwd_path, passwd_tmp); | |
1b992147 | 476 | |
100d5f6e | 477 | while ((r = fgetpwent_sane(original, &pw)) > 0) { |
d2a16737 | 478 | i = ordered_hashmap_get(c->users, pw->pw_name); |
330d1def ZJS |
479 | if (i && i->todo_user) |
480 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
481 | "%s: User \"%s\" already exists.", | |
482 | passwd_path, pw->pw_name); | |
e3c72c21 | 483 | |
d2a16737 | 484 | if (ordered_hashmap_contains(c->todo_uids, UID_TO_PTR(pw->pw_uid))) |
330d1def ZJS |
485 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), |
486 | "%s: Detected collision for UID " UID_FMT ".", | |
487 | passwd_path, pw->pw_uid); | |
b20b0b66 | 488 | |
563dc6f8 FB |
489 | /* Make sure we keep the NIS entries (if any) at the end. */ |
490 | if (IN_SET(pw->pw_name[0], '+', '-')) | |
491 | break; | |
492 | ||
100d5f6e FB |
493 | r = putpwent_sane(pw, passwd); |
494 | if (r < 0) | |
335f6ab4 ZJS |
495 | return log_debug_errno(r, "Failed to add existing user \"%s\" to temporary passwd file: %m", |
496 | pw->pw_name); | |
b20b0b66 | 497 | } |
100d5f6e | 498 | if (r < 0) |
335f6ab4 | 499 | return log_debug_errno(r, "Failed to read %s: %m", passwd_path); |
1dd98a71 FB |
500 | |
501 | } else { | |
502 | if (errno != ENOENT) | |
335f6ab4 | 503 | return log_debug_errno(errno, "Failed to open %s: %m", passwd_path); |
1dd98a71 | 504 | if (fchmod(fileno(passwd), 0644) < 0) |
335f6ab4 | 505 | return log_debug_errno(errno, "Failed to fchmod %s: %m", passwd_tmp); |
b20b0b66 FB |
506 | } |
507 | ||
d2a16737 | 508 | ORDERED_HASHMAP_FOREACH(i, c->todo_uids) { |
99e9f896 LP |
509 | _cleanup_free_ char *creds_shell = NULL, *cn = NULL; |
510 | ||
b20b0b66 FB |
511 | struct passwd n = { |
512 | .pw_name = i->name, | |
513 | .pw_uid = i->uid, | |
514 | .pw_gid = i->gid, | |
d610e142 | 515 | .pw_gecos = (char*) strempty(i->description), |
1b992147 | 516 | |
b20b0b66 | 517 | /* "x" means the password is stored in the shadow file */ |
53c25ac9 | 518 | .pw_passwd = (char*) PASSWORD_SEE_SHADOW, |
a12b0cc3 | 519 | |
b20b0b66 | 520 | /* We default to the root directory as home */ |
636e72bc | 521 | .pw_dir = i->home ?: (char*) "/", |
1b992147 | 522 | |
b20b0b66 FB |
523 | /* Initialize the shell to nologin, with one exception: |
524 | * for root we patch in something special */ | |
5f465fda | 525 | .pw_shell = (char*) pick_shell(i), |
b20b0b66 | 526 | }; |
9ab315cc | 527 | |
99e9f896 LP |
528 | /* Try to pick up the shell for this account via the credentials logic */ |
529 | cn = strjoin("passwd.shell.", i->name); | |
530 | if (!cn) | |
531 | return -ENOMEM; | |
532 | ||
533 | r = read_credential(cn, (void**) &creds_shell, NULL); | |
534 | if (r < 0) | |
535 | log_debug_errno(r, "Couldn't read credential '%s', ignoring: %m", cn); | |
536 | else | |
537 | n.pw_shell = creds_shell; | |
538 | ||
100d5f6e FB |
539 | r = putpwent_sane(&n, passwd); |
540 | if (r < 0) | |
335f6ab4 | 541 | return log_debug_errno(r, "Failed to add new user \"%s\" to temporary passwd file: %m", |
7e4c6149 | 542 | i->name); |
b20b0b66 FB |
543 | } |
544 | ||
563dc6f8 FB |
545 | /* Append the remaining NIS entries if any */ |
546 | while (pw) { | |
100d5f6e FB |
547 | r = putpwent_sane(pw, passwd); |
548 | if (r < 0) | |
335f6ab4 ZJS |
549 | return log_debug_errno(r, "Failed to add existing user \"%s\" to temporary passwd file: %m", |
550 | pw->pw_name); | |
563dc6f8 | 551 | |
100d5f6e FB |
552 | r = fgetpwent_sane(original, &pw); |
553 | if (r < 0) | |
335f6ab4 | 554 | return log_debug_errno(r, "Failed to read %s: %m", passwd_path); |
100d5f6e FB |
555 | if (r == 0) |
556 | break; | |
563dc6f8 | 557 | } |
563dc6f8 | 558 | |
19193b48 | 559 | r = fflush_sync_and_check(passwd); |
b20b0b66 | 560 | if (r < 0) |
335f6ab4 | 561 | return log_debug_errno(r, "Failed to flush %s: %m", passwd_tmp); |
b20b0b66 | 562 | |
9740e677 ZJS |
563 | *ret_tmpfile = TAKE_PTR(passwd); |
564 | *ret_tmpfile_path = TAKE_PTR(passwd_tmp); | |
1cc6c93a | 565 | |
b20b0b66 | 566 | return 0; |
b20b0b66 FB |
567 | } |
568 | ||
3fa8a114 JSMR |
569 | static usec_t epoch_or_now(void) { |
570 | uint64_t epoch; | |
571 | ||
dbe253aa | 572 | if (secure_getenv_uint64("SOURCE_DATE_EPOCH", &epoch) >= 0) { |
3fa8a114 JSMR |
573 | if (epoch > UINT64_MAX/USEC_PER_SEC) /* Overflow check */ |
574 | return USEC_INFINITY; | |
575 | return (usec_t) epoch * USEC_PER_SEC; | |
576 | } | |
577 | ||
578 | return now(CLOCK_REALTIME); | |
579 | } | |
580 | ||
d2a16737 LP |
581 | static int write_temporary_shadow( |
582 | Context *c, | |
583 | const char *shadow_path, | |
584 | FILE **ret_tmpfile, | |
585 | char **ret_tmpfile_path) { | |
586 | ||
b20b0b66 | 587 | _cleanup_fclose_ FILE *original = NULL, *shadow = NULL; |
1dd98a71 | 588 | _cleanup_(unlink_and_freep) char *shadow_tmp = NULL; |
19ec7de2 | 589 | struct spwd *sp = NULL; |
b20b0b66 FB |
590 | long lstchg; |
591 | Item *i; | |
592 | int r; | |
593 | ||
d2a16737 LP |
594 | assert(c); |
595 | ||
596 | if (ordered_hashmap_isempty(c->todo_uids)) | |
b20b0b66 FB |
597 | return 0; |
598 | ||
64fe1095 | 599 | if (arg_dry_run) { |
28e5e1e9 | 600 | log_info("Would write /etc/shadow%s", special_glyph(SPECIAL_GLYPH_ELLIPSIS)); |
64fe1095 ZJS |
601 | return 0; |
602 | } | |
603 | ||
b20b0b66 FB |
604 | r = fopen_temporary_label("/etc/shadow", shadow_path, &shadow, &shadow_tmp); |
605 | if (r < 0) | |
335f6ab4 | 606 | return log_debug_errno(r, "Failed to open temporary copy of %s: %m", shadow_path); |
9ab315cc | 607 | |
3fa8a114 | 608 | lstchg = (long) (epoch_or_now() / USEC_PER_DAY); |
b20b0b66 FB |
609 | |
610 | original = fopen(shadow_path, "re"); | |
611 | if (original) { | |
b20b0b66 | 612 | |
82855aa6 | 613 | r = copy_rights_with_fallback(fileno(original), fileno(shadow), shadow_tmp); |
9ab315cc | 614 | if (r < 0) |
335f6ab4 ZJS |
615 | return log_debug_errno(r, "Failed to copy permissions from %s to %s: %m", |
616 | shadow_path, shadow_tmp); | |
9ab315cc | 617 | |
100d5f6e | 618 | while ((r = fgetspent_sane(original, &sp)) > 0) { |
d2a16737 | 619 | i = ordered_hashmap_get(c->users, sp->sp_namp); |
b20b0b66 FB |
620 | if (i && i->todo_user) { |
621 | /* we will update the existing entry */ | |
622 | sp->sp_lstchg = lstchg; | |
e3c72c21 | 623 | |
b20b0b66 FB |
624 | /* only the /etc/shadow stage is left, so we can |
625 | * safely remove the item from the todo set */ | |
626 | i->todo_user = false; | |
d2a16737 | 627 | ordered_hashmap_remove(c->todo_uids, UID_TO_PTR(i->uid)); |
9ab315cc | 628 | } |
b20b0b66 | 629 | |
19ec7de2 FB |
630 | /* Make sure we keep the NIS entries (if any) at the end. */ |
631 | if (IN_SET(sp->sp_namp[0], '+', '-')) | |
632 | break; | |
633 | ||
100d5f6e FB |
634 | r = putspent_sane(sp, shadow); |
635 | if (r < 0) | |
335f6ab4 ZJS |
636 | return log_debug_errno(r, "Failed to add existing user \"%s\" to temporary shadow file: %m", |
637 | sp->sp_namp); | |
638 | ||
b20b0b66 | 639 | } |
100d5f6e | 640 | if (r < 0) |
335f6ab4 | 641 | return log_debug_errno(r, "Failed to read %s: %m", shadow_path); |
1dd98a71 FB |
642 | |
643 | } else { | |
644 | if (errno != ENOENT) | |
335f6ab4 | 645 | return log_debug_errno(errno, "Failed to open %s: %m", shadow_path); |
1dd98a71 | 646 | if (fchmod(fileno(shadow), 0000) < 0) |
335f6ab4 | 647 | return log_debug_errno(errno, "Failed to fchmod %s: %m", shadow_tmp); |
b20b0b66 | 648 | } |
9ab315cc | 649 | |
d2a16737 | 650 | ORDERED_HASHMAP_FOREACH(i, c->todo_uids) { |
99e9f896 | 651 | _cleanup_(erase_and_freep) char *creds_password = NULL; |
ff86850b | 652 | bool is_hashed; |
99e9f896 | 653 | |
b20b0b66 FB |
654 | struct spwd n = { |
655 | .sp_namp = i->name, | |
b20b0b66 FB |
656 | .sp_lstchg = lstchg, |
657 | .sp_min = -1, | |
658 | .sp_max = -1, | |
659 | .sp_warn = -1, | |
660 | .sp_inact = -1, | |
12c82937 | 661 | .sp_expire = -1, |
f5fbe71d | 662 | .sp_flag = ULONG_MAX, /* this appears to be what everybody does ... */ |
b20b0b66 | 663 | }; |
9ab315cc | 664 | |
ff86850b LN |
665 | r = get_credential_user_password(i->name, &creds_password, &is_hashed); |
666 | if (r < 0) | |
667 | log_debug_errno(r, "Couldn't read password credential for user '%s', ignoring: %m", i->name); | |
99e9f896 | 668 | |
ff86850b LN |
669 | if (creds_password && !is_hashed) { |
670 | _cleanup_(erase_and_freep) char* plaintext_password = TAKE_PTR(creds_password); | |
671 | r = hash_password(plaintext_password, &creds_password); | |
99e9f896 | 672 | if (r < 0) |
ff86850b LN |
673 | return log_debug_errno(r, "Failed to hash password: %m"); |
674 | } | |
99e9f896 LP |
675 | |
676 | if (creds_password) | |
677 | n.sp_pwdp = creds_password; | |
a777a592 ZJS |
678 | else if (streq(i->name, "root")) |
679 | /* Let firstboot set the password later */ | |
680 | n.sp_pwdp = (char*) PASSWORD_UNPROVISIONED; | |
681 | else | |
682 | n.sp_pwdp = (char*) PASSWORD_LOCKED_AND_INVALID; | |
99e9f896 | 683 | |
100d5f6e FB |
684 | r = putspent_sane(&n, shadow); |
685 | if (r < 0) | |
335f6ab4 | 686 | return log_debug_errno(r, "Failed to add new user \"%s\" to temporary shadow file: %m", |
7e4c6149 | 687 | i->name); |
1b992147 | 688 | } |
19ec7de2 FB |
689 | |
690 | /* Append the remaining NIS entries if any */ | |
691 | while (sp) { | |
100d5f6e FB |
692 | r = putspent_sane(sp, shadow); |
693 | if (r < 0) | |
335f6ab4 ZJS |
694 | return log_debug_errno(r, "Failed to add existing user \"%s\" to temporary shadow file: %m", |
695 | sp->sp_namp); | |
19ec7de2 | 696 | |
100d5f6e FB |
697 | r = fgetspent_sane(original, &sp); |
698 | if (r < 0) | |
335f6ab4 | 699 | return log_debug_errno(r, "Failed to read %s: %m", shadow_path); |
100d5f6e FB |
700 | if (r == 0) |
701 | break; | |
19ec7de2 FB |
702 | } |
703 | if (!IN_SET(errno, 0, ENOENT)) | |
704 | return -errno; | |
1b992147 | 705 | |
0675e94a | 706 | r = fflush_sync_and_check(shadow); |
b20b0b66 | 707 | if (r < 0) |
335f6ab4 | 708 | return log_debug_errno(r, "Failed to flush %s: %m", shadow_tmp); |
b20b0b66 | 709 | |
9740e677 ZJS |
710 | *ret_tmpfile = TAKE_PTR(shadow); |
711 | *ret_tmpfile_path = TAKE_PTR(shadow_tmp); | |
1cc6c93a | 712 | |
b20b0b66 | 713 | return 0; |
b20b0b66 | 714 | } |
1b992147 | 715 | |
d2a16737 LP |
716 | static int write_temporary_group( |
717 | Context *c, | |
718 | const char *group_path, | |
719 | FILE **ret_tmpfile, | |
720 | char **ret_tmpfile_path) { | |
721 | ||
b20b0b66 | 722 | _cleanup_fclose_ FILE *original = NULL, *group = NULL; |
1dd98a71 | 723 | _cleanup_(unlink_and_freep) char *group_tmp = NULL; |
b20b0b66 | 724 | bool group_changed = false; |
563dc6f8 | 725 | struct group *gr = NULL; |
b20b0b66 FB |
726 | Item *i; |
727 | int r; | |
1b992147 | 728 | |
d2a16737 LP |
729 | assert(c); |
730 | ||
731 | if (ordered_hashmap_isempty(c->todo_gids) && ordered_hashmap_isempty(c->members)) | |
b20b0b66 | 732 | return 0; |
e3c72c21 | 733 | |
64fe1095 | 734 | if (arg_dry_run) { |
28e5e1e9 | 735 | log_info("Would write /etc/group%s", special_glyph(SPECIAL_GLYPH_ELLIPSIS)); |
64fe1095 ZJS |
736 | return 0; |
737 | } | |
738 | ||
b20b0b66 FB |
739 | r = fopen_temporary_label("/etc/group", group_path, &group, &group_tmp); |
740 | if (r < 0) | |
4c795066 | 741 | return log_error_errno(r, "Failed to open temporary copy of %s: %m", group_path); |
b20b0b66 FB |
742 | |
743 | original = fopen(group_path, "re"); | |
744 | if (original) { | |
b20b0b66 | 745 | |
82855aa6 | 746 | r = copy_rights_with_fallback(fileno(original), fileno(group), group_tmp); |
b20b0b66 | 747 | if (r < 0) |
4c795066 | 748 | return log_error_errno(r, "Failed to copy permissions from %s to %s: %m", |
335f6ab4 | 749 | group_path, group_tmp); |
b20b0b66 | 750 | |
100d5f6e | 751 | while ((r = fgetgrent_sane(original, &gr)) > 0) { |
b20b0b66 FB |
752 | /* Safety checks against name and GID collisions. Normally, |
753 | * this should be unnecessary, but given that we look at the | |
754 | * entries anyway here, let's make an extra verification | |
755 | * step that we don't generate duplicate entries. */ | |
756 | ||
d2a16737 | 757 | i = ordered_hashmap_get(c->groups, gr->gr_name); |
330d1def ZJS |
758 | if (i && i->todo_group) |
759 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
760 | "%s: Group \"%s\" already exists.", | |
761 | group_path, gr->gr_name); | |
b20b0b66 | 762 | |
d2a16737 | 763 | if (ordered_hashmap_contains(c->todo_gids, GID_TO_PTR(gr->gr_gid))) |
330d1def ZJS |
764 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), |
765 | "%s: Detected collision for GID " GID_FMT ".", | |
766 | group_path, gr->gr_gid); | |
1b992147 | 767 | |
563dc6f8 FB |
768 | /* Make sure we keep the NIS entries (if any) at the end. */ |
769 | if (IN_SET(gr->gr_name[0], '+', '-')) | |
770 | break; | |
771 | ||
d2a16737 | 772 | r = putgrent_with_members(c, gr, group); |
b20b0b66 | 773 | if (r < 0) |
4c795066 | 774 | return log_error_errno(r, "Failed to add existing group \"%s\" to temporary group file: %m", |
335f6ab4 | 775 | gr->gr_name); |
b20b0b66 FB |
776 | if (r > 0) |
777 | group_changed = true; | |
b20b0b66 | 778 | } |
100d5f6e | 779 | if (r < 0) |
4c795066 | 780 | return log_error_errno(r, "Failed to read %s: %m", group_path); |
1dd98a71 FB |
781 | |
782 | } else { | |
783 | if (errno != ENOENT) | |
4c795066 | 784 | return log_error_errno(errno, "Failed to open %s: %m", group_path); |
1dd98a71 | 785 | if (fchmod(fileno(group), 0644) < 0) |
4c795066 | 786 | return log_error_errno(errno, "Failed to fchmod %s: %m", group_tmp); |
b20b0b66 | 787 | } |
7629889c | 788 | |
d2a16737 | 789 | ORDERED_HASHMAP_FOREACH(i, c->todo_gids) { |
b20b0b66 FB |
790 | struct group n = { |
791 | .gr_name = i->name, | |
792 | .gr_gid = i->gid, | |
53c25ac9 | 793 | .gr_passwd = (char*) PASSWORD_SEE_SHADOW, |
b20b0b66 | 794 | }; |
1b992147 | 795 | |
d2a16737 | 796 | r = putgrent_with_members(c, &n, group); |
b20b0b66 | 797 | if (r < 0) |
4c795066 | 798 | return log_error_errno(r, "Failed to add new group \"%s\" to temporary group file: %m", |
335f6ab4 | 799 | gr->gr_name); |
7629889c | 800 | |
b20b0b66 FB |
801 | group_changed = true; |
802 | } | |
1b992147 | 803 | |
563dc6f8 FB |
804 | /* Append the remaining NIS entries if any */ |
805 | while (gr) { | |
100d5f6e FB |
806 | r = putgrent_sane(gr, group); |
807 | if (r < 0) | |
4c795066 | 808 | return log_error_errno(r, "Failed to add existing group \"%s\" to temporary group file: %m", |
335f6ab4 | 809 | gr->gr_name); |
563dc6f8 | 810 | |
100d5f6e FB |
811 | r = fgetgrent_sane(original, &gr); |
812 | if (r < 0) | |
4c795066 | 813 | return log_error_errno(r, "Failed to read %s: %m", group_path); |
100d5f6e FB |
814 | if (r == 0) |
815 | break; | |
563dc6f8 | 816 | } |
563dc6f8 | 817 | |
0675e94a | 818 | r = fflush_sync_and_check(group); |
b20b0b66 | 819 | if (r < 0) |
4c795066 | 820 | return log_error_errno(r, "Failed to flush %s: %m", group_tmp); |
1b992147 | 821 | |
b20b0b66 | 822 | if (group_changed) { |
9740e677 ZJS |
823 | *ret_tmpfile = TAKE_PTR(group); |
824 | *ret_tmpfile_path = TAKE_PTR(group_tmp); | |
b20b0b66 FB |
825 | } |
826 | return 0; | |
b20b0b66 FB |
827 | } |
828 | ||
d2a16737 LP |
829 | static int write_temporary_gshadow( |
830 | Context *c, | |
831 | const char * gshadow_path, | |
832 | FILE **ret_tmpfile, | |
833 | char **ret_tmpfile_path) { | |
834 | ||
349cc4a5 | 835 | #if ENABLE_GSHADOW |
b20b0b66 | 836 | _cleanup_fclose_ FILE *original = NULL, *gshadow = NULL; |
1dd98a71 | 837 | _cleanup_(unlink_and_freep) char *gshadow_tmp = NULL; |
b20b0b66 | 838 | bool group_changed = false; |
b20b0b66 FB |
839 | Item *i; |
840 | int r; | |
841 | ||
d2a16737 LP |
842 | assert(c); |
843 | ||
844 | if (ordered_hashmap_isempty(c->todo_gids) && ordered_hashmap_isempty(c->members)) | |
b20b0b66 FB |
845 | return 0; |
846 | ||
64fe1095 | 847 | if (arg_dry_run) { |
28e5e1e9 | 848 | log_info("Would write /etc/gshadow%s", special_glyph(SPECIAL_GLYPH_ELLIPSIS)); |
64fe1095 ZJS |
849 | return 0; |
850 | } | |
851 | ||
b20b0b66 FB |
852 | r = fopen_temporary_label("/etc/gshadow", gshadow_path, &gshadow, &gshadow_tmp); |
853 | if (r < 0) | |
4c795066 | 854 | return log_error_errno(r, "Failed to open temporary copy of %s: %m", gshadow_path); |
9ab315cc | 855 | |
b20b0b66 FB |
856 | original = fopen(gshadow_path, "re"); |
857 | if (original) { | |
858 | struct sgrp *sg; | |
859 | ||
82855aa6 | 860 | r = copy_rights_with_fallback(fileno(original), fileno(gshadow), gshadow_tmp); |
1b992147 | 861 | if (r < 0) |
4c795066 | 862 | return log_error_errno(r, "Failed to copy permissions from %s to %s: %m", |
335f6ab4 | 863 | gshadow_path, gshadow_tmp); |
9ab315cc | 864 | |
100d5f6e | 865 | while ((r = fgetsgent_sane(original, &sg)) > 0) { |
c5abf225 | 866 | |
d2a16737 | 867 | i = ordered_hashmap_get(c->groups, sg->sg_namp); |
330d1def ZJS |
868 | if (i && i->todo_group) |
869 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
870 | "%s: Group \"%s\" already exists.", | |
871 | gshadow_path, sg->sg_namp); | |
9ab315cc | 872 | |
d2a16737 | 873 | r = putsgent_with_members(c, sg, gshadow); |
fff19499 | 874 | if (r < 0) |
4c795066 | 875 | return log_error_errno(r, "Failed to add existing group \"%s\" to temporary gshadow file: %m", |
335f6ab4 | 876 | sg->sg_namp); |
b20b0b66 FB |
877 | if (r > 0) |
878 | group_changed = true; | |
b20b0b66 | 879 | } |
100d5f6e FB |
880 | if (r < 0) |
881 | return r; | |
1dd98a71 FB |
882 | |
883 | } else { | |
884 | if (errno != ENOENT) | |
4c795066 | 885 | return log_error_errno(errno, "Failed to open %s: %m", gshadow_path); |
1dd98a71 | 886 | if (fchmod(fileno(gshadow), 0000) < 0) |
4c795066 | 887 | return log_error_errno(errno, "Failed to fchmod %s: %m", gshadow_tmp); |
b20b0b66 | 888 | } |
9ab315cc | 889 | |
d2a16737 | 890 | ORDERED_HASHMAP_FOREACH(i, c->todo_gids) { |
b20b0b66 FB |
891 | struct sgrp n = { |
892 | .sg_namp = i->name, | |
53c25ac9 | 893 | .sg_passwd = (char*) PASSWORD_LOCKED_AND_INVALID, |
b20b0b66 | 894 | }; |
9ab315cc | 895 | |
d2a16737 | 896 | r = putsgent_with_members(c, &n, gshadow); |
9ab315cc | 897 | if (r < 0) |
4c795066 | 898 | return log_error_errno(r, "Failed to add new group \"%s\" to temporary gshadow file: %m", |
335f6ab4 | 899 | n.sg_namp); |
b20b0b66 FB |
900 | |
901 | group_changed = true; | |
9ab315cc LP |
902 | } |
903 | ||
0675e94a | 904 | r = fflush_sync_and_check(gshadow); |
b20b0b66 | 905 | if (r < 0) |
4c795066 | 906 | return log_error_errno(r, "Failed to flush %s: %m", gshadow_tmp); |
b20b0b66 | 907 | |
9ab315cc | 908 | if (group_changed) { |
9740e677 ZJS |
909 | *ret_tmpfile = TAKE_PTR(gshadow); |
910 | *ret_tmpfile_path = TAKE_PTR(gshadow_tmp); | |
b20b0b66 | 911 | } |
b14e1b43 | 912 | #endif |
62d1c93a | 913 | return 0; |
b20b0b66 FB |
914 | } |
915 | ||
d2a16737 | 916 | static int write_files(Context *c) { |
b20b0b66 | 917 | _cleanup_fclose_ FILE *passwd = NULL, *group = NULL, *shadow = NULL, *gshadow = NULL; |
1dd98a71 | 918 | _cleanup_(unlink_and_freep) char *passwd_tmp = NULL, *group_tmp = NULL, *shadow_tmp = NULL, *gshadow_tmp = NULL; |
b20b0b66 FB |
919 | int r; |
920 | ||
28e014fe ZJS |
921 | const char |
922 | *passwd_path = prefix_roota(arg_root, "/etc/passwd"), | |
923 | *shadow_path = prefix_roota(arg_root, "/etc/shadow"), | |
924 | *group_path = prefix_roota(arg_root, "/etc/group"), | |
925 | *gshadow_path = prefix_roota(arg_root, "/etc/gshadow"); | |
b20b0b66 | 926 | |
d2a16737 LP |
927 | assert(c); |
928 | ||
929 | r = write_temporary_group(c, group_path, &group, &group_tmp); | |
b20b0b66 | 930 | if (r < 0) |
1dd98a71 | 931 | return r; |
b20b0b66 | 932 | |
d2a16737 | 933 | r = write_temporary_gshadow(c, gshadow_path, &gshadow, &gshadow_tmp); |
b20b0b66 | 934 | if (r < 0) |
1dd98a71 | 935 | return r; |
b20b0b66 | 936 | |
d2a16737 | 937 | r = write_temporary_passwd(c, passwd_path, &passwd, &passwd_tmp); |
b20b0b66 | 938 | if (r < 0) |
1dd98a71 | 939 | return r; |
b20b0b66 | 940 | |
d2a16737 | 941 | r = write_temporary_shadow(c, shadow_path, &shadow, &shadow_tmp); |
b20b0b66 | 942 | if (r < 0) |
1dd98a71 | 943 | return r; |
b20b0b66 FB |
944 | |
945 | /* Make a backup of the old files */ | |
946 | if (group) { | |
947 | r = make_backup("/etc/group", group_path); | |
948 | if (r < 0) | |
9740e677 | 949 | return log_error_errno(r, "Failed to backup %s: %m", group_path); |
b20b0b66 FB |
950 | } |
951 | if (gshadow) { | |
952 | r = make_backup("/etc/gshadow", gshadow_path); | |
953 | if (r < 0) | |
9740e677 | 954 | return log_error_errno(r, "Failed to backup %s: %m", gshadow_path); |
1b992147 LP |
955 | } |
956 | ||
957 | if (passwd) { | |
9f1c1940 | 958 | r = make_backup("/etc/passwd", passwd_path); |
1b992147 | 959 | if (r < 0) |
9740e677 | 960 | return log_error_errno(r, "Failed to backup %s: %m", passwd_path); |
1b992147 | 961 | } |
9ab315cc LP |
962 | if (shadow) { |
963 | r = make_backup("/etc/shadow", shadow_path); | |
964 | if (r < 0) | |
9740e677 | 965 | return log_error_errno(r, "Failed to backup %s: %m", shadow_path); |
9ab315cc | 966 | } |
1b992147 LP |
967 | |
968 | /* And make the new files count */ | |
b20b0b66 | 969 | if (group) { |
2da3dc69 | 970 | r = rename_and_apply_smack_floor_label(group_tmp, group_path); |
b20b0b66 | 971 | if (r < 0) |
4c795066 | 972 | return log_error_errno(r, "Failed to rename %s to %s: %m", |
335f6ab4 | 973 | group_tmp, group_path); |
b20b0b66 | 974 | group_tmp = mfree(group_tmp); |
d481b830 FB |
975 | |
976 | if (!arg_root && !arg_image) | |
977 | (void) nscd_flush_cache(STRV_MAKE("group")); | |
b20b0b66 FB |
978 | } |
979 | if (gshadow) { | |
2da3dc69 | 980 | r = rename_and_apply_smack_floor_label(gshadow_tmp, gshadow_path); |
b20b0b66 | 981 | if (r < 0) |
4c795066 | 982 | return log_error_errno(r, "Failed to rename %s to %s: %m", |
335f6ab4 | 983 | gshadow_tmp, gshadow_path); |
1b992147 | 984 | |
b20b0b66 | 985 | gshadow_tmp = mfree(gshadow_tmp); |
1b992147 LP |
986 | } |
987 | ||
988 | if (passwd) { | |
2da3dc69 | 989 | r = rename_and_apply_smack_floor_label(passwd_tmp, passwd_path); |
c02e7b1e | 990 | if (r < 0) |
4c795066 | 991 | return log_error_errno(r, "Failed to rename %s to %s: %m", |
335f6ab4 | 992 | passwd_tmp, passwd_path); |
1b992147 | 993 | |
97b11eed | 994 | passwd_tmp = mfree(passwd_tmp); |
d481b830 FB |
995 | |
996 | if (!arg_root && !arg_image) | |
997 | (void) nscd_flush_cache(STRV_MAKE("passwd")); | |
1b992147 | 998 | } |
9ab315cc | 999 | if (shadow) { |
2da3dc69 | 1000 | r = rename_and_apply_smack_floor_label(shadow_tmp, shadow_path); |
c02e7b1e | 1001 | if (r < 0) |
4c795066 | 1002 | return log_error_errno(r, "Failed to rename %s to %s: %m", |
335f6ab4 | 1003 | shadow_tmp, shadow_path); |
9ab315cc | 1004 | |
97b11eed | 1005 | shadow_tmp = mfree(shadow_tmp); |
9ab315cc | 1006 | } |
1b992147 | 1007 | |
1dd98a71 | 1008 | return 0; |
1b992147 LP |
1009 | } |
1010 | ||
d2a16737 LP |
1011 | static int uid_is_ok( |
1012 | Context *c, | |
1013 | uid_t uid, | |
1014 | const char *name, | |
1015 | bool check_with_gid) { | |
1016 | ||
75673cd8 | 1017 | int r; |
d2a16737 | 1018 | assert(c); |
1b992147 LP |
1019 | |
1020 | /* Let's see if we already have assigned the UID a second time */ | |
d2a16737 | 1021 | if (ordered_hashmap_get(c->todo_uids, UID_TO_PTR(uid))) |
1b992147 LP |
1022 | return 0; |
1023 | ||
1024 | /* Try to avoid using uids that are already used by a group | |
1025 | * that doesn't have the same name as our new user. */ | |
b9ee05c2 | 1026 | if (check_with_gid) { |
62d1c93a ZJS |
1027 | Item *i; |
1028 | ||
d2a16737 | 1029 | i = ordered_hashmap_get(c->todo_gids, GID_TO_PTR(uid)); |
b9ee05c2 MV |
1030 | if (i && !streq(i->name, name)) |
1031 | return 0; | |
1032 | } | |
1b992147 LP |
1033 | |
1034 | /* Let's check the files directly */ | |
d2a16737 | 1035 | if (hashmap_contains(c->database_by_uid, UID_TO_PTR(uid))) |
1b992147 LP |
1036 | return 0; |
1037 | ||
b9ee05c2 | 1038 | if (check_with_gid) { |
62d1c93a ZJS |
1039 | const char *n; |
1040 | ||
d2a16737 | 1041 | n = hashmap_get(c->database_by_gid, GID_TO_PTR(uid)); |
b9ee05c2 MV |
1042 | if (n && !streq(n, name)) |
1043 | return 0; | |
1044 | } | |
1b992147 LP |
1045 | |
1046 | /* Let's also check via NSS, to avoid UID clashes over LDAP and such, just in case */ | |
1047 | if (!arg_root) { | |
75673cd8 | 1048 | _cleanup_free_ struct group *g = NULL; |
62d1c93a | 1049 | |
75673cd8 LP |
1050 | r = getpwuid_malloc(uid, /* ret= */ NULL); |
1051 | if (r >= 0) | |
1b992147 | 1052 | return 0; |
75673cd8 LP |
1053 | if (r != -ESRCH) |
1054 | return r; | |
1b992147 | 1055 | |
b9ee05c2 | 1056 | if (check_with_gid) { |
75673cd8 LP |
1057 | r = getgrgid_malloc((gid_t) uid, &g); |
1058 | if (r >= 0) { | |
b9ee05c2 MV |
1059 | if (!streq(g->gr_name, name)) |
1060 | return 0; | |
75673cd8 LP |
1061 | } else if (r != -ESRCH) |
1062 | return r; | |
b9ee05c2 | 1063 | } |
1b992147 LP |
1064 | } |
1065 | ||
1066 | return 1; | |
1067 | } | |
1068 | ||
1069 | static int root_stat(const char *p, struct stat *st) { | |
1070 | const char *fix; | |
1071 | ||
1d13f648 | 1072 | fix = prefix_roota(arg_root, p); |
7c248223 | 1073 | return RET_NERRNO(stat(fix, st)); |
1b992147 LP |
1074 | } |
1075 | ||
905ec0c0 | 1076 | static int read_id_from_file(Item *i, uid_t *ret_uid, gid_t *ret_gid) { |
1b992147 LP |
1077 | struct stat st; |
1078 | bool found_uid = false, found_gid = false; | |
56d21cde PDS |
1079 | uid_t uid = 0; |
1080 | gid_t gid = 0; | |
1b992147 LP |
1081 | |
1082 | assert(i); | |
1083 | ||
3f316701 | 1084 | /* First, try to get the GID directly */ |
905ec0c0 | 1085 | if (ret_gid && i->gid_path && root_stat(i->gid_path, &st) >= 0) { |
1b992147 LP |
1086 | gid = st.st_gid; |
1087 | found_gid = true; | |
1088 | } | |
1089 | ||
3f316701 | 1090 | /* Then, try to get the UID directly */ |
905ec0c0 | 1091 | if ((ret_uid || (ret_gid && !found_gid)) |
1b992147 LP |
1092 | && i->uid_path |
1093 | && root_stat(i->uid_path, &st) >= 0) { | |
1094 | ||
1095 | uid = st.st_uid; | |
1096 | found_uid = true; | |
1097 | ||
3f316701 | 1098 | /* If we need the gid, but had no success yet, also derive it from the UID path */ |
905ec0c0 | 1099 | if (ret_gid && !found_gid) { |
1b992147 LP |
1100 | gid = st.st_gid; |
1101 | found_gid = true; | |
1102 | } | |
1103 | } | |
1104 | ||
3f316701 | 1105 | /* If that didn't work yet, then let's reuse the GID as UID */ |
905ec0c0 | 1106 | if (ret_uid && !found_uid && i->gid_path) { |
1b992147 LP |
1107 | |
1108 | if (found_gid) { | |
1109 | uid = (uid_t) gid; | |
1110 | found_uid = true; | |
1111 | } else if (root_stat(i->gid_path, &st) >= 0) { | |
1112 | uid = (uid_t) st.st_gid; | |
1113 | found_uid = true; | |
1114 | } | |
1115 | } | |
1116 | ||
905ec0c0 | 1117 | if (ret_uid) { |
1b992147 LP |
1118 | if (!found_uid) |
1119 | return 0; | |
1120 | ||
905ec0c0 | 1121 | *ret_uid = uid; |
1b992147 LP |
1122 | } |
1123 | ||
905ec0c0 | 1124 | if (ret_gid) { |
1b992147 LP |
1125 | if (!found_gid) |
1126 | return 0; | |
1127 | ||
905ec0c0 | 1128 | *ret_gid = gid; |
1b992147 LP |
1129 | } |
1130 | ||
1131 | return 1; | |
1132 | } | |
1133 | ||
d2a16737 | 1134 | static int add_user(Context *c, Item *i) { |
1b992147 LP |
1135 | void *z; |
1136 | int r; | |
1137 | ||
d2a16737 | 1138 | assert(c); |
1b992147 LP |
1139 | assert(i); |
1140 | ||
1141 | /* Check the database directly */ | |
d2a16737 | 1142 | z = hashmap_get(c->database_by_username, i->name); |
1b992147 LP |
1143 | if (z) { |
1144 | log_debug("User %s already exists.", i->name); | |
c1b6b04f | 1145 | i->uid = PTR_TO_UID(z); |
1b992147 LP |
1146 | i->uid_set = true; |
1147 | return 0; | |
1148 | } | |
1149 | ||
1150 | if (!arg_root) { | |
75673cd8 | 1151 | _cleanup_free_ struct passwd *p = NULL; |
1b992147 LP |
1152 | |
1153 | /* Also check NSS */ | |
75673cd8 LP |
1154 | r = getpwnam_malloc(i->name, &p); |
1155 | if (r >= 0) { | |
1b992147 LP |
1156 | log_debug("User %s already exists.", i->name); |
1157 | i->uid = p->pw_uid; | |
1158 | i->uid_set = true; | |
1159 | ||
2fc09a9c DM |
1160 | r = free_and_strdup(&i->description, p->pw_gecos); |
1161 | if (r < 0) | |
1162 | return log_oom(); | |
1163 | ||
1b992147 LP |
1164 | return 0; |
1165 | } | |
75673cd8 LP |
1166 | if (r != -ESRCH) |
1167 | return log_error_errno(r, "Failed to check if user %s already exists: %m", i->name); | |
1b992147 LP |
1168 | } |
1169 | ||
3f316701 | 1170 | /* Try to use the suggested numeric UID */ |
1b992147 | 1171 | if (i->uid_set) { |
d2a16737 | 1172 | r = uid_is_ok(c, i->uid, i->name, !i->id_set_strict); |
f647962d | 1173 | if (r < 0) |
3f316701 | 1174 | return log_error_errno(r, "Failed to verify UID " UID_FMT ": %m", i->uid); |
1b992147 | 1175 | if (r == 0) { |
5374bc7c | 1176 | log_info("Suggested user ID " UID_FMT " for %s already used.", i->uid, i->name); |
1b992147 LP |
1177 | i->uid_set = false; |
1178 | } | |
1179 | } | |
1180 | ||
1181 | /* If that didn't work, try to read it from the specified path */ | |
1182 | if (!i->uid_set) { | |
d2a16737 | 1183 | uid_t candidate; |
1b992147 | 1184 | |
d2a16737 | 1185 | if (read_id_from_file(i, &candidate, NULL) > 0) { |
1b992147 | 1186 | |
d2a16737 LP |
1187 | if (candidate <= 0 || !uid_range_contains(c->uid_range, candidate)) |
1188 | log_debug("User ID " UID_FMT " of file not suitable for %s.", candidate, i->name); | |
1b992147 | 1189 | else { |
d2a16737 | 1190 | r = uid_is_ok(c, candidate, i->name, true); |
f647962d | 1191 | if (r < 0) |
3f316701 | 1192 | return log_error_errno(r, "Failed to verify UID " UID_FMT ": %m", i->uid); |
f647962d | 1193 | else if (r > 0) { |
d2a16737 | 1194 | i->uid = candidate; |
1b992147 LP |
1195 | i->uid_set = true; |
1196 | } else | |
d2a16737 | 1197 | log_debug("User ID " UID_FMT " of file for %s is already used.", candidate, i->name); |
1b992147 LP |
1198 | } |
1199 | } | |
1200 | } | |
1201 | ||
b938cb90 | 1202 | /* Otherwise, try to reuse the group ID */ |
1b992147 | 1203 | if (!i->uid_set && i->gid_set) { |
d2a16737 | 1204 | r = uid_is_ok(c, (uid_t) i->gid, i->name, true); |
f647962d | 1205 | if (r < 0) |
3f316701 | 1206 | return log_error_errno(r, "Failed to verify UID " UID_FMT ": %m", i->uid); |
1b992147 LP |
1207 | if (r > 0) { |
1208 | i->uid = (uid_t) i->gid; | |
1209 | i->uid_set = true; | |
1210 | } | |
1211 | } | |
1212 | ||
1213 | /* And if that didn't work either, let's try to find a free one */ | |
1214 | if (!i->uid_set) { | |
d2a16737 | 1215 | maybe_emit_login_defs_warning(c); |
4b6f9b20 | 1216 | |
8530dc44 | 1217 | for (;;) { |
d2a16737 | 1218 | r = uid_range_next_lower(c->uid_range, &c->search_uid); |
330d1def ZJS |
1219 | if (r < 0) |
1220 | return log_error_errno(r, "No free user ID available for %s.", i->name); | |
1b992147 | 1221 | |
d2a16737 | 1222 | r = uid_is_ok(c, c->search_uid, i->name, true); |
f647962d | 1223 | if (r < 0) |
3f316701 | 1224 | return log_error_errno(r, "Failed to verify UID " UID_FMT ": %m", i->uid); |
f647962d | 1225 | else if (r > 0) |
1b992147 LP |
1226 | break; |
1227 | } | |
1228 | ||
1b992147 | 1229 | i->uid_set = true; |
d2a16737 | 1230 | i->uid = c->search_uid; |
1b992147 LP |
1231 | } |
1232 | ||
d2a16737 | 1233 | r = ordered_hashmap_ensure_put(&c->todo_uids, NULL, UID_TO_PTR(i->uid), i); |
1dfb9321 | 1234 | if (r == -EEXIST) |
3f316701 | 1235 | return log_error_errno(r, "Requested user %s with UID " UID_FMT " and gid" GID_FMT " to be created is duplicated " |
1dfb9321 SS |
1236 | "or conflicts with another user.", i->name, i->uid, i->gid); |
1237 | if (r == -ENOMEM) | |
1b992147 | 1238 | return log_oom(); |
1b992147 | 1239 | if (r < 0) |
3f316701 | 1240 | return log_error_errno(r, "Failed to store user %s with UID " UID_FMT " and GID " GID_FMT " to be created: %m", |
1dfb9321 | 1241 | i->name, i->uid, i->gid); |
1b992147 | 1242 | |
c1b6b04f | 1243 | i->todo_user = true; |
9a5af4b7 | 1244 | log_info("Creating user '%s' (%s) with UID " UID_FMT " and GID " GID_FMT ".", |
62d1c93a | 1245 | i->name, strna(i->description), i->uid, i->gid); |
1b992147 LP |
1246 | |
1247 | return 0; | |
1248 | } | |
1249 | ||
d2a16737 LP |
1250 | static int gid_is_ok( |
1251 | Context *c, | |
1252 | gid_t gid, | |
1253 | const char *groupname, | |
1254 | bool check_with_uid) { | |
1255 | ||
4ae3e8c9 LB |
1256 | Item *user; |
1257 | char *username; | |
75673cd8 | 1258 | int r; |
4ae3e8c9 | 1259 | |
d2a16737 | 1260 | assert(c); |
4ae3e8c9 | 1261 | assert(groupname); |
1b992147 | 1262 | |
d2a16737 | 1263 | if (ordered_hashmap_get(c->todo_gids, GID_TO_PTR(gid))) |
1b992147 LP |
1264 | return 0; |
1265 | ||
1266 | /* Avoid reusing gids that are already used by a different user */ | |
4ae3e8c9 | 1267 | if (check_with_uid) { |
d2a16737 | 1268 | user = ordered_hashmap_get(c->todo_uids, UID_TO_PTR(gid)); |
4ae3e8c9 LB |
1269 | if (user && !streq(user->name, groupname)) |
1270 | return 0; | |
1271 | } | |
1b992147 | 1272 | |
d2a16737 | 1273 | if (hashmap_contains(c->database_by_gid, GID_TO_PTR(gid))) |
1b992147 LP |
1274 | return 0; |
1275 | ||
4ae3e8c9 | 1276 | if (check_with_uid) { |
d2a16737 | 1277 | username = hashmap_get(c->database_by_uid, UID_TO_PTR(gid)); |
4ae3e8c9 LB |
1278 | if (username && !streq(username, groupname)) |
1279 | return 0; | |
1280 | } | |
1b992147 LP |
1281 | |
1282 | if (!arg_root) { | |
75673cd8 LP |
1283 | r = getgrgid_malloc(gid, /* ret= */ NULL); |
1284 | if (r >= 0) | |
1b992147 | 1285 | return 0; |
75673cd8 LP |
1286 | if (r != -ESRCH) |
1287 | return r; | |
1b992147 | 1288 | |
6b6e45eb | 1289 | if (check_with_uid) { |
75673cd8 LP |
1290 | r = getpwuid_malloc(gid, /* ret= */ NULL); |
1291 | if (r >= 0) | |
6b6e45eb | 1292 | return 0; |
75673cd8 LP |
1293 | if (r != -ESRCH) |
1294 | return r; | |
6b6e45eb | 1295 | } |
1b992147 LP |
1296 | } |
1297 | ||
1298 | return 1; | |
1299 | } | |
1300 | ||
d2a16737 LP |
1301 | static int get_gid_by_name( |
1302 | Context *c, | |
1303 | const char *name, | |
1304 | gid_t *ret_gid) { | |
1305 | ||
1b992147 | 1306 | void *z; |
75673cd8 | 1307 | int r; |
1b992147 | 1308 | |
d2a16737 LP |
1309 | assert(c); |
1310 | assert(ret_gid); | |
1b992147 LP |
1311 | |
1312 | /* Check the database directly */ | |
d2a16737 | 1313 | z = hashmap_get(c->database_by_groupname, name); |
1b992147 | 1314 | if (z) { |
d2a16737 | 1315 | *ret_gid = PTR_TO_GID(z); |
1b992147 LP |
1316 | return 0; |
1317 | } | |
1318 | ||
1319 | /* Also check NSS */ | |
1320 | if (!arg_root) { | |
75673cd8 | 1321 | _cleanup_free_ struct group *g = NULL; |
1b992147 | 1322 | |
75673cd8 LP |
1323 | r = getgrnam_malloc(name, &g); |
1324 | if (r >= 0) { | |
d2a16737 | 1325 | *ret_gid = g->gr_gid; |
1b992147 LP |
1326 | return 0; |
1327 | } | |
75673cd8 LP |
1328 | if (r != -ESRCH) |
1329 | return log_error_errno(r, "Failed to check if group %s already exists: %m", name); | |
649916d3 DM |
1330 | } |
1331 | ||
1332 | return -ENOENT; | |
1333 | } | |
1334 | ||
d2a16737 | 1335 | static int add_group(Context *c, Item *i) { |
649916d3 DM |
1336 | int r; |
1337 | ||
d2a16737 | 1338 | assert(c); |
649916d3 DM |
1339 | assert(i); |
1340 | ||
d2a16737 | 1341 | r = get_gid_by_name(c, i->name, &i->gid); |
649916d3 DM |
1342 | if (r != -ENOENT) { |
1343 | if (r < 0) | |
1344 | return r; | |
1345 | log_debug("Group %s already exists.", i->name); | |
1346 | i->gid_set = true; | |
1347 | return 0; | |
1b992147 LP |
1348 | } |
1349 | ||
3f316701 | 1350 | /* Try to use the suggested numeric GID */ |
1b992147 | 1351 | if (i->gid_set) { |
d2a16737 | 1352 | r = gid_is_ok(c, i->gid, i->name, false); |
f647962d | 1353 | if (r < 0) |
3f316701 | 1354 | return log_error_errno(r, "Failed to verify GID " GID_FMT ": %m", i->gid); |
b9ee05c2 | 1355 | if (i->id_set_strict) { |
3f316701 ZJS |
1356 | /* If we require the GID to already exist we can return here: |
1357 | * r > 0: means the GID does not exist -> fail | |
1358 | * r == 0: means the GID exists -> nothing more to do. | |
28e7fad7 | 1359 | */ |
baaa35ad ZJS |
1360 | if (r > 0) |
1361 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
c0f86d66 | 1362 | "Failed to create %s: please create GID " GID_FMT, |
baaa35ad | 1363 | i->name, i->gid); |
28e7fad7 MV |
1364 | if (r == 0) |
1365 | return 0; | |
1366 | } | |
1b992147 | 1367 | if (r == 0) { |
5374bc7c | 1368 | log_info("Suggested group ID " GID_FMT " for %s already used.", i->gid, i->name); |
1b992147 LP |
1369 | i->gid_set = false; |
1370 | } | |
1371 | } | |
1372 | ||
1373 | /* Try to reuse the numeric uid, if there's one */ | |
1374 | if (!i->gid_set && i->uid_set) { | |
d2a16737 | 1375 | r = gid_is_ok(c, (gid_t) i->uid, i->name, true); |
f647962d | 1376 | if (r < 0) |
3f316701 | 1377 | return log_error_errno(r, "Failed to verify GID " GID_FMT ": %m", i->gid); |
1b992147 LP |
1378 | if (r > 0) { |
1379 | i->gid = (gid_t) i->uid; | |
1380 | i->gid_set = true; | |
1381 | } | |
1382 | } | |
1383 | ||
1384 | /* If that didn't work, try to read it from the specified path */ | |
1385 | if (!i->gid_set) { | |
d2a16737 | 1386 | gid_t candidate; |
1b992147 | 1387 | |
d2a16737 | 1388 | if (read_id_from_file(i, NULL, &candidate) > 0) { |
1b992147 | 1389 | |
d2a16737 LP |
1390 | if (candidate <= 0 || !uid_range_contains(c->uid_range, candidate)) |
1391 | log_debug("Group ID " GID_FMT " of file not suitable for %s.", candidate, i->name); | |
1b992147 | 1392 | else { |
d2a16737 | 1393 | r = gid_is_ok(c, candidate, i->name, true); |
f647962d | 1394 | if (r < 0) |
3f316701 | 1395 | return log_error_errno(r, "Failed to verify GID " GID_FMT ": %m", i->gid); |
f647962d | 1396 | else if (r > 0) { |
d2a16737 | 1397 | i->gid = candidate; |
1b992147 LP |
1398 | i->gid_set = true; |
1399 | } else | |
d2a16737 | 1400 | log_debug("Group ID " GID_FMT " of file for %s already used.", candidate, i->name); |
1b992147 LP |
1401 | } |
1402 | } | |
1403 | } | |
1404 | ||
1405 | /* And if that didn't work either, let's try to find a free one */ | |
1406 | if (!i->gid_set) { | |
d2a16737 | 1407 | maybe_emit_login_defs_warning(c); |
4b6f9b20 | 1408 | |
8530dc44 LP |
1409 | for (;;) { |
1410 | /* We look for new GIDs in the UID pool! */ | |
d2a16737 | 1411 | r = uid_range_next_lower(c->uid_range, &c->search_uid); |
330d1def ZJS |
1412 | if (r < 0) |
1413 | return log_error_errno(r, "No free group ID available for %s.", i->name); | |
8530dc44 | 1414 | |
d2a16737 | 1415 | r = gid_is_ok(c, c->search_uid, i->name, true); |
f647962d | 1416 | if (r < 0) |
3f316701 | 1417 | return log_error_errno(r, "Failed to verify GID " GID_FMT ": %m", i->gid); |
f647962d | 1418 | else if (r > 0) |
1b992147 LP |
1419 | break; |
1420 | } | |
1421 | ||
1b992147 | 1422 | i->gid_set = true; |
d2a16737 | 1423 | i->gid = c->search_uid; |
1b992147 LP |
1424 | } |
1425 | ||
d2a16737 | 1426 | r = ordered_hashmap_ensure_put(&c->todo_gids, NULL, GID_TO_PTR(i->gid), i); |
1dfb9321 | 1427 | if (r == -EEXIST) |
3f316701 | 1428 | return log_error_errno(r, "Requested group %s with GID "GID_FMT " to be created is duplicated or conflicts with another user.", i->name, i->gid); |
1dfb9321 | 1429 | if (r == -ENOMEM) |
1b992147 | 1430 | return log_oom(); |
1b992147 | 1431 | if (r < 0) |
3f316701 | 1432 | return log_error_errno(r, "Failed to store group %s with GID " GID_FMT " to be created: %m", i->name, i->gid); |
1b992147 | 1433 | |
c1b6b04f | 1434 | i->todo_group = true; |
9a5af4b7 | 1435 | log_info("Creating group '%s' with GID " GID_FMT ".", i->name, i->gid); |
1b992147 LP |
1436 | |
1437 | return 0; | |
1438 | } | |
1439 | ||
d2a16737 | 1440 | static int process_item(Context *c, Item *i) { |
1b992147 LP |
1441 | int r; |
1442 | ||
d2a16737 | 1443 | assert(c); |
1b992147 LP |
1444 | assert(i); |
1445 | ||
1446 | switch (i->type) { | |
1447 | ||
b5327d0a | 1448 | case ADD_USER: { |
5ed47c4d LB |
1449 | Item *j = NULL; |
1450 | ||
1451 | if (!i->gid_set) | |
d2a16737 | 1452 | j = ordered_hashmap_get(c->groups, i->group_name ?: i->name); |
b5327d0a | 1453 | |
b5327d0a | 1454 | if (j && j->todo_group) { |
649916d3 | 1455 | /* When a group with the target name is already in queue, |
b5327d0a YW |
1456 | * use the information about the group and do not create |
1457 | * duplicated group entry. */ | |
1458 | i->gid_set = j->gid_set; | |
1459 | i->gid = j->gid; | |
1460 | i->id_set_strict = true; | |
649916d3 DM |
1461 | } else if (i->group_name) { |
1462 | /* When a group name was given instead of a GID and it's | |
1463 | * not in queue, then it must already exist. */ | |
d2a16737 | 1464 | r = get_gid_by_name(c, i->group_name, &i->gid); |
649916d3 DM |
1465 | if (r < 0) |
1466 | return log_error_errno(r, "Group %s not found.", i->group_name); | |
1467 | i->gid_set = true; | |
1468 | i->id_set_strict = true; | |
b5327d0a | 1469 | } else { |
d2a16737 | 1470 | r = add_group(c, i); |
b5327d0a YW |
1471 | if (r < 0) |
1472 | return r; | |
1473 | } | |
1b992147 | 1474 | |
d2a16737 | 1475 | return add_user(c, i); |
b5327d0a | 1476 | } |
1b992147 | 1477 | |
e2c2060f | 1478 | case ADD_GROUP: |
d2a16737 | 1479 | return add_group(c, i); |
1b992147 | 1480 | |
a12b0cc3 | 1481 | default: |
04499a70 | 1482 | assert_not_reached(); |
a12b0cc3 | 1483 | } |
1b992147 LP |
1484 | } |
1485 | ||
71da1673 | 1486 | static Item* item_free(Item *i) { |
1b992147 | 1487 | if (!i) |
71da1673 | 1488 | return NULL; |
1b992147 LP |
1489 | |
1490 | free(i->name); | |
649916d3 | 1491 | free(i->group_name); |
1b992147 LP |
1492 | free(i->uid_path); |
1493 | free(i->gid_path); | |
1494 | free(i->description); | |
d9b8ea54 | 1495 | free(i->home); |
7b1aaf66 | 1496 | free(i->shell); |
9a87bdd7 | 1497 | free(i->filename); |
71da1673 | 1498 | return mfree(i); |
1b992147 LP |
1499 | } |
1500 | ||
1501 | DEFINE_TRIVIAL_CLEANUP_FUNC(Item*, item_free); | |
71da1673 | 1502 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(item_hash_ops, char, string_hash_func, string_compare_func, Item, item_free); |
1b992147 | 1503 | |
9a87bdd7 ZJS |
1504 | static Item* item_new(ItemType type, const char *name, const char *filename, unsigned line) { |
1505 | assert(name); | |
1506 | assert(!!filename == (line > 0)); | |
1507 | ||
1508 | _cleanup_(item_freep) Item *new = new(Item, 1); | |
1509 | if (!new) | |
1510 | return NULL; | |
1511 | ||
1512 | *new = (Item) { | |
1513 | .type = type, | |
1514 | .line = line, | |
1515 | }; | |
1516 | ||
1517 | if (free_and_strdup(&new->name, name) < 0 || | |
1518 | free_and_strdup(&new->filename, filename) < 0) | |
1519 | return NULL; | |
1520 | ||
1521 | return TAKE_PTR(new); | |
1522 | } | |
1523 | ||
d2a16737 | 1524 | static int add_implicit(Context *c) { |
a12b0cc3 | 1525 | char *g, **l; |
a12b0cc3 LP |
1526 | int r; |
1527 | ||
d2a16737 LP |
1528 | assert(c); |
1529 | ||
a12b0cc3 | 1530 | /* Implicitly create additional users and groups, if they were listed in "m" lines */ |
d2a16737 | 1531 | ORDERED_HASHMAP_FOREACH_KEY(l, g, c->members) { |
d4f0412d | 1532 | STRV_FOREACH(m, l) |
d2a16737 | 1533 | if (!ordered_hashmap_get(c->users, *m)) { |
9a87bdd7 ZJS |
1534 | _cleanup_(item_freep) Item *j = |
1535 | item_new(ADD_USER, *m, /* filename= */ NULL, /* line= */ 0); | |
a12b0cc3 LP |
1536 | if (!j) |
1537 | return log_oom(); | |
1538 | ||
d2a16737 | 1539 | r = ordered_hashmap_ensure_put(&c->users, &item_hash_ops, j->name, j); |
f334deba | 1540 | if (r == -ENOMEM) |
a12b0cc3 | 1541 | return log_oom(); |
f334deba SS |
1542 | if (r < 0) |
1543 | return log_error_errno(r, "Failed to add implicit user '%s': %m", j->name); | |
a12b0cc3 LP |
1544 | |
1545 | log_debug("Adding implicit user '%s' due to m line", j->name); | |
f334deba | 1546 | TAKE_PTR(j); |
a12b0cc3 | 1547 | } |
d4f0412d | 1548 | |
d2a16737 LP |
1549 | if (!(ordered_hashmap_get(c->users, g) || |
1550 | ordered_hashmap_get(c->groups, g))) { | |
9a87bdd7 ZJS |
1551 | _cleanup_(item_freep) Item *j = |
1552 | item_new(ADD_GROUP, g, /* filename= */ NULL, /* line= */ 0); | |
d4f0412d YW |
1553 | if (!j) |
1554 | return log_oom(); | |
1555 | ||
d2a16737 | 1556 | r = ordered_hashmap_ensure_put(&c->groups, &item_hash_ops, j->name, j); |
f334deba | 1557 | if (r == -ENOMEM) |
d4f0412d | 1558 | return log_oom(); |
f334deba SS |
1559 | if (r < 0) |
1560 | return log_error_errno(r, "Failed to add implicit group '%s': %m", j->name); | |
d4f0412d YW |
1561 | |
1562 | log_debug("Adding implicit group '%s' due to m line", j->name); | |
f334deba | 1563 | TAKE_PTR(j); |
a12b0cc3 LP |
1564 | } |
1565 | } | |
1566 | ||
1567 | return 0; | |
1568 | } | |
1569 | ||
5f465fda ZJS |
1570 | static int item_equivalent(Item *a, Item *b) { |
1571 | int r; | |
1572 | ||
1b992147 LP |
1573 | assert(a); |
1574 | assert(b); | |
1575 | ||
7519b880 ZJS |
1576 | if (a->type != b->type) { |
1577 | log_syntax(NULL, LOG_DEBUG, a->filename, a->line, 0, | |
1578 | "Item not equivalent because types differ"); | |
1b992147 | 1579 | return false; |
7519b880 | 1580 | } |
1b992147 | 1581 | |
7519b880 ZJS |
1582 | if (!streq_ptr(a->name, b->name)) { |
1583 | log_syntax(NULL, LOG_DEBUG, a->filename, a->line, 0, | |
1584 | "Item not equivalent because names differ ('%s' vs. '%s')", | |
1585 | a->name, b->name); | |
1b992147 | 1586 | return false; |
7519b880 | 1587 | } |
1b992147 | 1588 | |
5f465fda | 1589 | /* Paths were simplified previously, so we can use streq. */ |
7519b880 ZJS |
1590 | if (!streq_ptr(a->uid_path, b->uid_path)) { |
1591 | log_syntax(NULL, LOG_DEBUG, a->filename, a->line, 0, | |
1592 | "Item not equivalent because UID paths differ (%s vs. %s)", | |
1593 | a->uid_path ?: "(unset)", b->uid_path ?: "(unset)"); | |
1b992147 | 1594 | return false; |
7519b880 | 1595 | } |
1b992147 | 1596 | |
7519b880 ZJS |
1597 | if (!streq_ptr(a->gid_path, b->gid_path)) { |
1598 | log_syntax(NULL, LOG_DEBUG, a->filename, a->line, 0, | |
1599 | "Item not equivalent because GID paths differ (%s vs. %s)", | |
1600 | a->gid_path ?: "(unset)", b->gid_path ?: "(unset)"); | |
1b992147 | 1601 | return false; |
7519b880 | 1602 | } |
1b992147 | 1603 | |
7519b880 ZJS |
1604 | if (!streq_ptr(a->description, b->description)) { |
1605 | log_syntax(NULL, LOG_DEBUG, a->filename, a->line, 0, | |
1606 | "Item not equivalent because descriptions differ ('%s' vs. '%s')", | |
1607 | strempty(a->description), strempty(b->description)); | |
1b992147 | 1608 | return false; |
7519b880 | 1609 | } |
1b992147 | 1610 | |
7519b880 ZJS |
1611 | if ((a->uid_set != b->uid_set) || |
1612 | (a->uid_set && a->uid != b->uid)) { | |
1613 | log_syntax(NULL, LOG_DEBUG, a->filename, a->line, 0, | |
1614 | "Item not equivalent because UIDs differ (%s vs. %s)", | |
80d07162 AV |
1615 | a->uid_set ? FORMAT_UID(a->uid) : "(unset)", |
1616 | b->uid_set ? FORMAT_UID(b->uid) : "(unset)"); | |
1b992147 | 1617 | return false; |
7519b880 | 1618 | } |
1b992147 | 1619 | |
7519b880 ZJS |
1620 | if ((a->gid_set != b->gid_set) || |
1621 | (a->gid_set && a->gid != b->gid)) { | |
1622 | log_syntax(NULL, LOG_DEBUG, a->filename, a->line, 0, | |
1623 | "Item not equivalent because GIDs differ (%s vs. %s)", | |
80d07162 AV |
1624 | a->gid_set ? FORMAT_GID(a->gid) : "(unset)", |
1625 | b->gid_set ? FORMAT_GID(b->gid) : "(unset)"); | |
1b992147 | 1626 | return false; |
7519b880 | 1627 | } |
1b992147 | 1628 | |
7519b880 ZJS |
1629 | if (!streq_ptr(a->home, b->home)) { |
1630 | log_syntax(NULL, LOG_DEBUG, a->filename, a->line, 0, | |
1631 | "Item not equivalent because home directories differ ('%s' vs. '%s')", | |
1632 | strempty(a->description), strempty(b->description)); | |
7629889c | 1633 | return false; |
7519b880 | 1634 | } |
7629889c | 1635 | |
5f465fda ZJS |
1636 | /* Check if the two paths refer to the same file. |
1637 | * If the paths are equal (after normalization), it's obviously the same file. | |
1638 | * If both paths specify a nologin shell, treat them as the same (e.g. /bin/true and /bin/false). | |
1639 | * Otherwise, try to resolve the paths, and see if we get the same result, (e.g. /sbin/nologin and | |
1640 | * /usr/sbin/nologin). | |
1641 | * If we can't resolve something, treat different paths as different. */ | |
1642 | ||
1643 | const char *a_shell = pick_shell(a), | |
1644 | *b_shell = pick_shell(b); | |
1645 | if (!path_equal_ptr(a_shell, b_shell) && | |
1646 | !(is_nologin_shell(a_shell) && is_nologin_shell(b_shell))) { | |
1647 | _cleanup_free_ char *pa = NULL, *pb = NULL; | |
1648 | ||
f461a28d | 1649 | r = chase(a_shell, arg_root, CHASE_PREFIX_ROOT | CHASE_NONEXISTENT, &pa, NULL); |
5f465fda ZJS |
1650 | if (r < 0) { |
1651 | log_full_errno(ERRNO_IS_RESOURCE(r) ? LOG_ERR : LOG_DEBUG, | |
1652 | r, "Failed to look up path '%s%s%s': %m", | |
1653 | strempty(arg_root), arg_root ? "/" : "", a_shell); | |
1654 | return ERRNO_IS_RESOURCE(r) ? r : false; | |
1655 | } | |
1656 | ||
f461a28d | 1657 | r = chase(b_shell, arg_root, CHASE_PREFIX_ROOT | CHASE_NONEXISTENT, &pb, NULL); |
5f465fda ZJS |
1658 | if (r < 0) { |
1659 | log_full_errno(ERRNO_IS_RESOURCE(r) ? LOG_ERR : LOG_DEBUG, | |
1660 | r, "Failed to look up path '%s%s%s': %m", | |
1661 | strempty(arg_root), arg_root ? "/" : "", b_shell); | |
1662 | return ERRNO_IS_RESOURCE(r) ? r : false; | |
1663 | } | |
1664 | ||
7519b880 ZJS |
1665 | if (!path_equal(pa, pb)) { |
1666 | log_syntax(NULL, LOG_DEBUG, a->filename, a->line, 0, | |
1667 | "Item not equivalent because shells differ ('%s' vs. '%s')", | |
1668 | pa, pb); | |
5f465fda | 1669 | return false; |
7519b880 | 1670 | } |
5f465fda | 1671 | } |
7b1aaf66 | 1672 | |
1b992147 LP |
1673 | return true; |
1674 | } | |
1675 | ||
d2a16737 | 1676 | static int parse_line( |
d2a16737 LP |
1677 | const char *fname, |
1678 | unsigned line, | |
15d660fb ZJS |
1679 | const char *buffer, |
1680 | bool *invalid_config, | |
1681 | void *context) { | |
d2a16737 | 1682 | |
15d660fb | 1683 | Context *c = ASSERT_PTR(context); |
7b1aaf66 ZJS |
1684 | _cleanup_free_ char *action = NULL, |
1685 | *name = NULL, *resolved_name = NULL, | |
1686 | *id = NULL, *resolved_id = NULL, | |
b8bed700 YW |
1687 | *description = NULL, *resolved_description = NULL, |
1688 | *home = NULL, *resolved_home = NULL, | |
71fb1588 | 1689 | *shell = NULL, *resolved_shell = NULL; |
1b992147 LP |
1690 | _cleanup_(item_freep) Item *i = NULL; |
1691 | Item *existing; | |
5bc9c980 | 1692 | OrderedHashmap *h; |
7629889c LP |
1693 | int r; |
1694 | const char *p; | |
1b992147 LP |
1695 | |
1696 | assert(fname); | |
1697 | assert(line >= 1); | |
1698 | assert(buffer); | |
15d660fb | 1699 | assert(!invalid_config); /* We don't support invalid_config yet. */ |
1b992147 | 1700 | |
7629889c LP |
1701 | /* Parse columns */ |
1702 | p = buffer; | |
4ec85141 | 1703 | r = extract_many_words(&p, NULL, EXTRACT_UNQUOTE, |
7b1aaf66 | 1704 | &action, &name, &id, &description, &home, &shell, NULL); |
330d1def | 1705 | if (r < 0) |
87c696f2 | 1706 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Syntax error."); |
330d1def | 1707 | if (r < 2) |
87c696f2 ZJS |
1708 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EINVAL), |
1709 | "Missing action and name columns."); | |
330d1def | 1710 | if (!isempty(p)) |
87c696f2 ZJS |
1711 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EINVAL), |
1712 | "Trailing garbage."); | |
1b992147 | 1713 | |
7629889c | 1714 | /* Verify action */ |
330d1def | 1715 | if (strlen(action) != 1) |
87c696f2 ZJS |
1716 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EINVAL), |
1717 | "Unknown modifier '%s'.", action); | |
1b992147 | 1718 | |
330d1def | 1719 | if (!IN_SET(action[0], ADD_USER, ADD_GROUP, ADD_MEMBER, ADD_RANGE)) |
87c696f2 ZJS |
1720 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EBADMSG), |
1721 | "Unknown command type '%c'.", action[0]); | |
1b992147 | 1722 | |
7629889c | 1723 | /* Verify name */ |
e7b88b7b | 1724 | if (empty_or_dash(name)) |
97b11eed | 1725 | name = mfree(name); |
1b992147 | 1726 | |
8530dc44 | 1727 | if (name) { |
de61a04b | 1728 | r = specifier_printf(name, NAME_MAX, system_and_tmp_specifier_table, arg_root, NULL, &resolved_name); |
330d1def | 1729 | if (r < 0) |
87c696f2 | 1730 | return log_syntax(NULL, LOG_ERR, fname, line, r, "Failed to replace specifiers in '%s': %m", name); |
8530dc44 | 1731 | |
7a8867ab | 1732 | if (!valid_user_group_name(resolved_name, 0)) |
87c696f2 ZJS |
1733 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EINVAL), |
1734 | "'%s' is not a valid user or group name.", resolved_name); | |
1b992147 LP |
1735 | } |
1736 | ||
8530dc44 | 1737 | /* Verify id */ |
e7b88b7b | 1738 | if (empty_or_dash(id)) |
97b11eed | 1739 | id = mfree(id); |
7629889c | 1740 | |
8530dc44 | 1741 | if (id) { |
de61a04b | 1742 | r = specifier_printf(id, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_id); |
330d1def | 1743 | if (r < 0) |
87c696f2 ZJS |
1744 | return log_syntax(NULL, LOG_ERR, fname, line, r, |
1745 | "Failed to replace specifiers in '%s': %m", name); | |
8530dc44 LP |
1746 | } |
1747 | ||
1748 | /* Verify description */ | |
e7b88b7b | 1749 | if (empty_or_dash(description)) |
97b11eed | 1750 | description = mfree(description); |
1b992147 | 1751 | |
8530dc44 | 1752 | if (description) { |
de61a04b | 1753 | r = specifier_printf(description, LONG_LINE_MAX, system_and_tmp_specifier_table, arg_root, NULL, &resolved_description); |
330d1def | 1754 | if (r < 0) |
87c696f2 ZJS |
1755 | return log_syntax(NULL, LOG_ERR, fname, line, r, |
1756 | "Failed to replace specifiers in '%s': %m", description); | |
b8bed700 | 1757 | |
330d1def | 1758 | if (!valid_gecos(resolved_description)) |
87c696f2 ZJS |
1759 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EINVAL), |
1760 | "'%s' is not a valid GECOS field.", resolved_description); | |
8530dc44 LP |
1761 | } |
1762 | ||
1763 | /* Verify home */ | |
e7b88b7b | 1764 | if (empty_or_dash(home)) |
97b11eed | 1765 | home = mfree(home); |
1b992147 | 1766 | |
8530dc44 | 1767 | if (home) { |
de61a04b | 1768 | r = specifier_printf(home, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_home); |
330d1def | 1769 | if (r < 0) |
87c696f2 ZJS |
1770 | return log_syntax(NULL, LOG_ERR, fname, line, r, |
1771 | "Failed to replace specifiers in '%s': %m", home); | |
b8bed700 | 1772 | |
eef74f91 ZJS |
1773 | path_simplify(resolved_home); |
1774 | ||
330d1def | 1775 | if (!valid_home(resolved_home)) |
87c696f2 ZJS |
1776 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EINVAL), |
1777 | "'%s' is not a valid home directory field.", resolved_home); | |
8530dc44 LP |
1778 | } |
1779 | ||
7b1aaf66 | 1780 | /* Verify shell */ |
e7b88b7b | 1781 | if (empty_or_dash(shell)) |
7b1aaf66 ZJS |
1782 | shell = mfree(shell); |
1783 | ||
1784 | if (shell) { | |
de61a04b | 1785 | r = specifier_printf(shell, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_shell); |
330d1def | 1786 | if (r < 0) |
87c696f2 ZJS |
1787 | return log_syntax(NULL, LOG_ERR, fname, line, r, |
1788 | "Failed to replace specifiers in '%s': %m", shell); | |
7b1aaf66 | 1789 | |
eef74f91 ZJS |
1790 | path_simplify(resolved_shell); |
1791 | ||
330d1def | 1792 | if (!valid_shell(resolved_shell)) |
87c696f2 ZJS |
1793 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EINVAL), |
1794 | "'%s' is not a valid login shell field.", resolved_shell); | |
7b1aaf66 ZJS |
1795 | } |
1796 | ||
a12b0cc3 | 1797 | switch (action[0]) { |
1b992147 | 1798 | |
8530dc44 | 1799 | case ADD_RANGE: |
330d1def | 1800 | if (resolved_name) |
87c696f2 ZJS |
1801 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EINVAL), |
1802 | "Lines of type 'r' don't take a name field."); | |
330d1def ZJS |
1803 | |
1804 | if (!resolved_id) | |
87c696f2 ZJS |
1805 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EINVAL), |
1806 | "Lines of type 'r' require an ID range in the third field."); | |
330d1def ZJS |
1807 | |
1808 | if (description || home || shell) | |
87c696f2 ZJS |
1809 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EINVAL), |
1810 | "Lines of type '%c' don't take a %s field.", | |
1811 | action[0], | |
1812 | description ? "GECOS" : home ? "home directory" : "login shell"); | |
7629889c | 1813 | |
d2a16737 | 1814 | r = uid_range_add_str(&c->uid_range, resolved_id); |
330d1def | 1815 | if (r < 0) |
87c696f2 ZJS |
1816 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EINVAL), |
1817 | "Invalid UID range %s.", resolved_id); | |
1b992147 | 1818 | |
8530dc44 LP |
1819 | return 0; |
1820 | ||
1821 | case ADD_MEMBER: { | |
8530dc44 | 1822 | /* Try to extend an existing member or group item */ |
330d1def | 1823 | if (!name) |
87c696f2 ZJS |
1824 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EINVAL), |
1825 | "Lines of type 'm' require a user name in the second field."); | |
330d1def ZJS |
1826 | |
1827 | if (!resolved_id) | |
87c696f2 ZJS |
1828 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EINVAL), |
1829 | "Lines of type 'm' require a group name in the third field."); | |
330d1def | 1830 | |
7a8867ab | 1831 | if (!valid_user_group_name(resolved_id, 0)) |
87c696f2 ZJS |
1832 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EINVAL), |
1833 | "'%s' is not a valid user or group name.", resolved_id); | |
330d1def ZJS |
1834 | |
1835 | if (description || home || shell) | |
87c696f2 ZJS |
1836 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EINVAL), |
1837 | "Lines of type '%c' don't take a %s field.", | |
1838 | action[0], | |
1839 | description ? "GECOS" : home ? "home directory" : "login shell"); | |
8530dc44 | 1840 | |
d2a16737 | 1841 | r = string_strv_ordered_hashmap_put(&c->members, resolved_id, resolved_name); |
7629889c | 1842 | if (r < 0) |
cde79109 | 1843 | return log_error_errno(r, "Failed to store mapping for %s: %m", resolved_id); |
a12b0cc3 LP |
1844 | |
1845 | return 0; | |
1b992147 LP |
1846 | } |
1847 | ||
a12b0cc3 | 1848 | case ADD_USER: |
330d1def | 1849 | if (!name) |
87c696f2 ZJS |
1850 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EINVAL), |
1851 | "Lines of type 'u' require a user name in the second field."); | |
8530dc44 | 1852 | |
d2a16737 | 1853 | r = ordered_hashmap_ensure_allocated(&c->users, &item_hash_ops); |
a12b0cc3 LP |
1854 | if (r < 0) |
1855 | return log_oom(); | |
1856 | ||
9a87bdd7 | 1857 | i = item_new(ADD_USER, resolved_name, fname, line); |
a12b0cc3 LP |
1858 | if (!i) |
1859 | return log_oom(); | |
1860 | ||
8530dc44 | 1861 | if (resolved_id) { |
9a87bdd7 ZJS |
1862 | if (path_is_absolute(resolved_id)) |
1863 | i->uid_path = path_simplify(TAKE_PTR(resolved_id)); | |
1864 | else { | |
4cb41413 MV |
1865 | _cleanup_free_ char *uid = NULL, *gid = NULL; |
1866 | if (split_pair(resolved_id, ":", &uid, &gid) == 0) { | |
1867 | r = parse_gid(gid, &i->gid); | |
649916d3 | 1868 | if (r < 0) { |
7a8867ab | 1869 | if (valid_user_group_name(gid, 0)) |
649916d3 DM |
1870 | i->group_name = TAKE_PTR(gid); |
1871 | else | |
87c696f2 ZJS |
1872 | return log_syntax(NULL, LOG_ERR, fname, line, r, |
1873 | "Failed to parse GID: '%s': %m", id); | |
649916d3 DM |
1874 | } else { |
1875 | i->gid_set = true; | |
1876 | i->id_set_strict = true; | |
1877 | } | |
4cb41413 | 1878 | free_and_replace(resolved_id, uid); |
a12b0cc3 | 1879 | } |
1825c909 MV |
1880 | if (!streq(resolved_id, "-")) { |
1881 | r = parse_uid(resolved_id, &i->uid); | |
1882 | if (r < 0) | |
87c696f2 ZJS |
1883 | return log_syntax(NULL, LOG_ERR, fname, line, r, |
1884 | "Failed to parse UID: '%s': %m", id); | |
1825c909 MV |
1885 | i->uid_set = true; |
1886 | } | |
a12b0cc3 LP |
1887 | } |
1888 | } | |
1889 | ||
b8bed700 YW |
1890 | i->description = TAKE_PTR(resolved_description); |
1891 | i->home = TAKE_PTR(resolved_home); | |
1cc6c93a | 1892 | i->shell = TAKE_PTR(resolved_shell); |
7b1aaf66 | 1893 | |
d2a16737 | 1894 | h = c->users; |
a12b0cc3 LP |
1895 | break; |
1896 | ||
1897 | case ADD_GROUP: | |
330d1def | 1898 | if (!name) |
87c696f2 ZJS |
1899 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EINVAL), |
1900 | "Lines of type 'g' require a user name in the second field."); | |
a12b0cc3 | 1901 | |
330d1def | 1902 | if (description || home || shell) |
87c696f2 ZJS |
1903 | return log_syntax(NULL, LOG_ERR, fname, line, SYNTHETIC_ERRNO(EINVAL), |
1904 | "Lines of type '%c' don't take a %s field.", | |
1905 | action[0], | |
1906 | description ? "GECOS" : home ? "home directory" : "login shell"); | |
7629889c | 1907 | |
d2a16737 | 1908 | r = ordered_hashmap_ensure_allocated(&c->groups, &item_hash_ops); |
7629889c LP |
1909 | if (r < 0) |
1910 | return log_oom(); | |
1911 | ||
9a87bdd7 | 1912 | i = item_new(ADD_GROUP, resolved_name, fname, line); |
a12b0cc3 LP |
1913 | if (!i) |
1914 | return log_oom(); | |
1915 | ||
8530dc44 | 1916 | if (resolved_id) { |
9a87bdd7 ZJS |
1917 | if (path_is_absolute(resolved_id)) |
1918 | i->gid_path = path_simplify(TAKE_PTR(resolved_id)); | |
1919 | else { | |
8530dc44 | 1920 | r = parse_gid(resolved_id, &i->gid); |
4cb41413 | 1921 | if (r < 0) |
87c696f2 ZJS |
1922 | return log_syntax(NULL, LOG_ERR, fname, line, r, |
1923 | "Failed to parse GID: '%s': %m", id); | |
a12b0cc3 LP |
1924 | |
1925 | i->gid_set = true; | |
1926 | } | |
1927 | } | |
1928 | ||
d2a16737 | 1929 | h = c->groups; |
a12b0cc3 | 1930 | break; |
8530dc44 | 1931 | |
bce415ed | 1932 | default: |
9a87bdd7 | 1933 | assert_not_reached(); |
1b992147 | 1934 | } |
a12b0cc3 | 1935 | |
5bc9c980 | 1936 | existing = ordered_hashmap_get(h, i->name); |
1b992147 | 1937 | if (existing) { |
5f465fda | 1938 | /* Two functionally-equivalent items are fine */ |
7519b880 | 1939 | r = item_equivalent(i, existing); |
5f465fda ZJS |
1940 | if (r < 0) |
1941 | return r; | |
9a87bdd7 ZJS |
1942 | if (r == 0) { |
1943 | if (existing->filename) | |
1944 | log_syntax(NULL, LOG_WARNING, fname, line, 0, | |
1945 | "Conflict with earlier configuration for %s '%s' in %s:%u, ignoring line.", | |
1946 | item_type_to_string(i->type), | |
1947 | i->name, | |
1948 | existing->filename, existing->line); | |
1949 | else | |
1950 | log_syntax(NULL, LOG_WARNING, fname, line, 0, | |
1951 | "Conflict with earlier configuration for %s '%s', ignoring line.", | |
1952 | item_type_to_string(i->type), | |
1953 | i->name); | |
1954 | } | |
1b992147 LP |
1955 | |
1956 | return 0; | |
1957 | } | |
1958 | ||
5bc9c980 | 1959 | r = ordered_hashmap_put(h, i->name, i); |
a12b0cc3 LP |
1960 | if (r < 0) |
1961 | return log_oom(); | |
1b992147 LP |
1962 | |
1963 | i = NULL; | |
1964 | return 0; | |
1965 | } | |
1966 | ||
d2a16737 | 1967 | static int read_config_file(Context *c, const char *fn, bool ignore_enoent) { |
15d660fb ZJS |
1968 | return conf_file_read( |
1969 | arg_root, | |
1970 | (const char**) CONF_PATHS_STRV("sysusers.d"), | |
1971 | ASSERT_PTR(fn), | |
1972 | parse_line, | |
1973 | ASSERT_PTR(c), | |
1974 | ignore_enoent, | |
1975 | /* invalid_config= */ NULL); | |
1b992147 LP |
1976 | } |
1977 | ||
ec0327d6 ZJS |
1978 | static int cat_config(void) { |
1979 | _cleanup_strv_free_ char **files = NULL; | |
ec0327d6 ZJS |
1980 | int r; |
1981 | ||
a826d4f7 | 1982 | r = conf_files_list_with_replacement(arg_root, CONF_PATHS_STRV("sysusers.d"), arg_replace, &files, NULL); |
ec0327d6 ZJS |
1983 | if (r < 0) |
1984 | return r; | |
1985 | ||
384c2c32 | 1986 | pager_open(arg_pager_flags); |
dcd5c891 | 1987 | |
918560d7 | 1988 | return cat_files(NULL, files, arg_cat_flags); |
ec0327d6 ZJS |
1989 | } |
1990 | ||
37ec0fdd LP |
1991 | static int help(void) { |
1992 | _cleanup_free_ char *link = NULL; | |
1993 | int r; | |
1994 | ||
1995 | r = terminal_urlify_man("systemd-sysusers.service", "8", &link); | |
1996 | if (r < 0) | |
1997 | return log_oom(); | |
1998 | ||
1b992147 LP |
1999 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" |
2000 | "Creates system user accounts.\n\n" | |
2001 | " -h --help Show this help\n" | |
2002 | " --version Show package version\n" | |
ec0327d6 | 2003 | " --cat-config Show configuration files\n" |
918560d7 | 2004 | " --tldr Show non-comment parts of configuration\n" |
601185b4 | 2005 | " --root=PATH Operate on an alternate filesystem root\n" |
0c3ee127 | 2006 | " --image=PATH Operate on disk image as filesystem root\n" |
84be0c71 | 2007 | " --image-policy=POLICY Specify disk image dissection policy\n" |
d16a1c1b | 2008 | " --replace=PATH Treat arguments as replacement for PATH\n" |
64fe1095 | 2009 | " --dry-run Just print what would be done\n" |
1b600bd5 | 2010 | " --inline Treat arguments as configuration lines\n" |
dcd5c891 | 2011 | " --no-pager Do not pipe output into a pager\n" |
bc556335 DDM |
2012 | "\nSee the %s for details.\n", |
2013 | program_invocation_short_name, | |
2014 | link); | |
37ec0fdd LP |
2015 | |
2016 | return 0; | |
1b992147 LP |
2017 | } |
2018 | ||
2019 | static int parse_argv(int argc, char *argv[]) { | |
2020 | ||
2021 | enum { | |
2022 | ARG_VERSION = 0x100, | |
ec0327d6 | 2023 | ARG_CAT_CONFIG, |
918560d7 | 2024 | ARG_TLDR, |
1b992147 | 2025 | ARG_ROOT, |
0c3ee127 | 2026 | ARG_IMAGE, |
06e78680 | 2027 | ARG_IMAGE_POLICY, |
d16a1c1b | 2028 | ARG_REPLACE, |
64fe1095 | 2029 | ARG_DRY_RUN, |
1b600bd5 | 2030 | ARG_INLINE, |
dcd5c891 | 2031 | ARG_NO_PAGER, |
1b992147 LP |
2032 | }; |
2033 | ||
2034 | static const struct option options[] = { | |
84be0c71 LP |
2035 | { "help", no_argument, NULL, 'h' }, |
2036 | { "version", no_argument, NULL, ARG_VERSION }, | |
2037 | { "cat-config", no_argument, NULL, ARG_CAT_CONFIG }, | |
918560d7 | 2038 | { "tldr", no_argument, NULL, ARG_TLDR }, |
84be0c71 LP |
2039 | { "root", required_argument, NULL, ARG_ROOT }, |
2040 | { "image", required_argument, NULL, ARG_IMAGE }, | |
06e78680 | 2041 | { "image-policy", required_argument, NULL, ARG_IMAGE_POLICY }, |
84be0c71 LP |
2042 | { "replace", required_argument, NULL, ARG_REPLACE }, |
2043 | { "dry-run", no_argument, NULL, ARG_DRY_RUN }, | |
2044 | { "inline", no_argument, NULL, ARG_INLINE }, | |
2045 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, | |
1b992147 LP |
2046 | {} |
2047 | }; | |
2048 | ||
0f474365 | 2049 | int c, r; |
1b992147 LP |
2050 | |
2051 | assert(argc >= 0); | |
2052 | assert(argv); | |
2053 | ||
601185b4 | 2054 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) |
1b992147 LP |
2055 | |
2056 | switch (c) { | |
2057 | ||
2058 | case 'h': | |
37ec0fdd | 2059 | return help(); |
1b992147 LP |
2060 | |
2061 | case ARG_VERSION: | |
3f6fd1ba | 2062 | return version(); |
1b992147 | 2063 | |
ec0327d6 | 2064 | case ARG_CAT_CONFIG: |
918560d7 ZJS |
2065 | arg_cat_flags = CAT_CONFIG_ON; |
2066 | break; | |
2067 | ||
2068 | case ARG_TLDR: | |
2069 | arg_cat_flags = CAT_TLDR; | |
ec0327d6 ZJS |
2070 | break; |
2071 | ||
1b992147 | 2072 | case ARG_ROOT: |
614b022c | 2073 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_root); |
0f474365 | 2074 | if (r < 0) |
0f03c2a4 | 2075 | return r; |
1b992147 LP |
2076 | break; |
2077 | ||
0c3ee127 | 2078 | case ARG_IMAGE: |
3537577c ZJS |
2079 | #ifdef STANDALONE |
2080 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
2081 | "This systemd-sysusers version is compiled without support for --image=."); | |
2082 | #else | |
614b022c | 2083 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image); |
0c3ee127 LP |
2084 | if (r < 0) |
2085 | return r; | |
2086 | break; | |
3537577c | 2087 | #endif |
0c3ee127 | 2088 | |
06e78680 YW |
2089 | case ARG_IMAGE_POLICY: |
2090 | r = parse_image_policy_argument(optarg, &arg_image_policy); | |
2091 | if (r < 0) | |
2092 | return r; | |
2093 | break; | |
2094 | ||
d16a1c1b | 2095 | case ARG_REPLACE: |
37ee46f7 | 2096 | if (!path_is_absolute(optarg)) |
baaa35ad | 2097 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
37ee46f7 ZJS |
2098 | "The argument to --replace= must be an absolute path."); |
2099 | if (!endswith(optarg, ".conf")) | |
2100 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
2101 | "The argument to --replace= must have the extension '.conf'."); | |
d16a1c1b ZJS |
2102 | |
2103 | arg_replace = optarg; | |
2104 | break; | |
2105 | ||
64fe1095 ZJS |
2106 | case ARG_DRY_RUN: |
2107 | arg_dry_run = true; | |
2108 | break; | |
2109 | ||
1b600bd5 ZJS |
2110 | case ARG_INLINE: |
2111 | arg_inline = true; | |
2112 | break; | |
2113 | ||
dcd5c891 | 2114 | case ARG_NO_PAGER: |
0221d68a | 2115 | arg_pager_flags |= PAGER_DISABLE; |
dcd5c891 LP |
2116 | break; |
2117 | ||
1b992147 LP |
2118 | case '?': |
2119 | return -EINVAL; | |
2120 | ||
2121 | default: | |
04499a70 | 2122 | assert_not_reached(); |
1b992147 | 2123 | } |
1b992147 | 2124 | |
918560d7 | 2125 | if (arg_replace && arg_cat_flags != CAT_CONFIG_OFF) |
baaa35ad | 2126 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
918560d7 | 2127 | "Option --replace= is not supported with --cat-config/--tldr."); |
ec0327d6 | 2128 | |
baaa35ad ZJS |
2129 | if (arg_replace && optind >= argc) |
2130 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
918560d7 | 2131 | "When --replace= is given, some configuration items must be specified."); |
d16a1c1b | 2132 | |
0c3ee127 | 2133 | if (arg_image && arg_root) |
918560d7 ZJS |
2134 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
2135 | "Use either --root= or --image=, the combination of both is not supported."); | |
0c3ee127 | 2136 | |
1b992147 LP |
2137 | return 1; |
2138 | } | |
2139 | ||
d2a16737 | 2140 | static int parse_arguments(Context *c, char **args) { |
d16a1c1b ZJS |
2141 | unsigned pos = 1; |
2142 | int r; | |
2143 | ||
d2a16737 LP |
2144 | assert(c); |
2145 | ||
d16a1c1b ZJS |
2146 | STRV_FOREACH(arg, args) { |
2147 | if (arg_inline) | |
2148 | /* Use (argument):n, where n==1 for the first positional arg */ | |
15d660fb | 2149 | r = parse_line("(argument)", pos, *arg, /* invalid_config= */ NULL, c); |
d16a1c1b | 2150 | else |
d2a16737 | 2151 | r = read_config_file(c, *arg, /* ignore_enoent= */ false); |
d16a1c1b ZJS |
2152 | if (r < 0) |
2153 | return r; | |
2154 | ||
2155 | pos++; | |
2156 | } | |
2157 | ||
2158 | return 0; | |
2159 | } | |
2160 | ||
d2a16737 | 2161 | static int read_config_files(Context *c, char **args) { |
d16a1c1b ZJS |
2162 | _cleanup_strv_free_ char **files = NULL; |
2163 | _cleanup_free_ char *p = NULL; | |
d16a1c1b ZJS |
2164 | int r; |
2165 | ||
d2a16737 LP |
2166 | assert(c); |
2167 | ||
a826d4f7 | 2168 | r = conf_files_list_with_replacement(arg_root, CONF_PATHS_STRV("sysusers.d"), arg_replace, &files, &p); |
d16a1c1b | 2169 | if (r < 0) |
ec0327d6 | 2170 | return r; |
d16a1c1b ZJS |
2171 | |
2172 | STRV_FOREACH(f, files) | |
2173 | if (p && path_equal(*f, p)) { | |
28e5e1e9 | 2174 | log_debug("Parsing arguments at position \"%s\"%s", *f, special_glyph(SPECIAL_GLYPH_ELLIPSIS)); |
d16a1c1b | 2175 | |
d2a16737 | 2176 | r = parse_arguments(c, args); |
d16a1c1b ZJS |
2177 | if (r < 0) |
2178 | return r; | |
2179 | } else { | |
28e5e1e9 | 2180 | log_debug("Reading config file \"%s\"%s", *f, special_glyph(SPECIAL_GLYPH_ELLIPSIS)); |
d16a1c1b ZJS |
2181 | |
2182 | /* Just warn, ignore result otherwise */ | |
d2a16737 | 2183 | (void) read_config_file(c, *f, /* ignore_enoent= */ true); |
d16a1c1b ZJS |
2184 | } |
2185 | ||
2186 | return 0; | |
2187 | } | |
2188 | ||
d2a16737 | 2189 | static int read_credential_lines(Context *c) { |
3acb6ede LP |
2190 | _cleanup_free_ char *j = NULL; |
2191 | const char *d; | |
2192 | int r; | |
2193 | ||
d2a16737 LP |
2194 | assert(c); |
2195 | ||
3acb6ede LP |
2196 | r = get_credentials_dir(&d); |
2197 | if (r == -ENXIO) | |
2198 | return 0; | |
2199 | if (r < 0) | |
2200 | return log_error_errno(r, "Failed to get credentials directory: %m"); | |
2201 | ||
2202 | j = path_join(d, "sysusers.extra"); | |
2203 | if (!j) | |
2204 | return log_oom(); | |
2205 | ||
d2a16737 | 2206 | (void) read_config_file(c, j, /* ignore_enoent= */ true); |
3acb6ede LP |
2207 | return 0; |
2208 | } | |
2209 | ||
71da1673 | 2210 | static int run(int argc, char *argv[]) { |
3537577c | 2211 | #ifndef STANDALONE |
0c3ee127 | 2212 | _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL; |
a4b3e942 | 2213 | _cleanup_(umount_and_freep) char *mounted_dir = NULL; |
3537577c | 2214 | #endif |
5bb1d7fb | 2215 | _cleanup_close_ int lock = -EBADF; |
d2a16737 LP |
2216 | _cleanup_(context_done) Context c = { |
2217 | .search_uid = UID_INVALID, | |
2218 | }; | |
2219 | ||
1b992147 | 2220 | Item *i; |
dd2fd972 | 2221 | int r; |
1b992147 LP |
2222 | |
2223 | r = parse_argv(argc, argv); | |
2224 | if (r <= 0) | |
71da1673 | 2225 | return r; |
1b992147 | 2226 | |
d2acb93d | 2227 | log_setup(); |
1b992147 | 2228 | |
918560d7 | 2229 | if (arg_cat_flags != CAT_CONFIG_OFF) |
71da1673 | 2230 | return cat_config(); |
ec0327d6 | 2231 | |
1b992147 LP |
2232 | umask(0022); |
2233 | ||
a452c807 | 2234 | r = mac_init(); |
71da1673 | 2235 | if (r < 0) |
a9ba0e32 | 2236 | return r; |
1b992147 | 2237 | |
3537577c | 2238 | #ifndef STANDALONE |
0c3ee127 LP |
2239 | if (arg_image) { |
2240 | assert(!arg_root); | |
2241 | ||
2242 | r = mount_image_privately_interactively( | |
2243 | arg_image, | |
84be0c71 | 2244 | arg_image_policy, |
4b5de5dd LP |
2245 | DISSECT_IMAGE_GENERIC_ROOT | |
2246 | DISSECT_IMAGE_REQUIRE_ROOT | | |
2247 | DISSECT_IMAGE_VALIDATE_OS | | |
2248 | DISSECT_IMAGE_RELAX_VAR_CHECK | | |
c65f854a | 2249 | DISSECT_IMAGE_FSCK | |
f4a63ce2 LP |
2250 | DISSECT_IMAGE_GROWFS | |
2251 | DISSECT_IMAGE_ALLOW_USERSPACE_VERITY, | |
a4b3e942 | 2252 | &mounted_dir, |
a133d2c3 | 2253 | /* ret_dir_fd= */ NULL, |
e330f97a | 2254 | &loop_device); |
0c3ee127 LP |
2255 | if (r < 0) |
2256 | return r; | |
2257 | ||
a4b3e942 | 2258 | arg_root = strdup(mounted_dir); |
0c3ee127 LP |
2259 | if (!arg_root) |
2260 | return log_oom(); | |
2261 | } | |
3537577c ZJS |
2262 | #else |
2263 | assert(!arg_image); | |
2264 | #endif | |
0c3ee127 | 2265 | |
3acb6ede LP |
2266 | /* If command line arguments are specified along with --replace, read all configuration files and |
2267 | * insert the positional arguments at the specified place. Otherwise, if command line arguments are | |
2268 | * specified, execute just them, and finally, without --replace= or any positional arguments, just | |
2269 | * read configuration and execute it. */ | |
d16a1c1b | 2270 | if (arg_replace || optind >= argc) |
d2a16737 | 2271 | r = read_config_files(&c, argv + optind); |
d16a1c1b | 2272 | else |
d2a16737 | 2273 | r = parse_arguments(&c, argv + optind); |
d16a1c1b | 2274 | if (r < 0) |
71da1673 | 2275 | return r; |
1b992147 | 2276 | |
d2a16737 | 2277 | r = read_credential_lines(&c); |
3acb6ede LP |
2278 | if (r < 0) |
2279 | return r; | |
2280 | ||
2281 | /* Let's tell nss-systemd not to synthesize the "root" and "nobody" entries for it, so that our | |
2282 | * detection whether the names or UID/GID area already used otherwise doesn't get confused. After | |
2283 | * all, even though nss-systemd synthesizes these users/groups, they should still appear in | |
2284 | * /etc/passwd and /etc/group, as the synthesizing logic is merely supposed to be fallback for cases | |
2285 | * where we run with a completely unpopulated /etc. */ | |
71da1673 YW |
2286 | if (setenv("SYSTEMD_NSS_BYPASS_SYNTHETIC", "1", 1) < 0) |
2287 | return log_error_errno(errno, "Failed to set SYSTEMD_NSS_BYPASS_SYNTHETIC environment variable: %m"); | |
fe102d6a | 2288 | |
d2a16737 | 2289 | if (!c.uid_range) { |
aa25270c | 2290 | /* Default to default range of SYSTEMD_UID_MIN..SYSTEM_UID_MAX. */ |
d2a16737 | 2291 | r = read_login_defs(&c.login_defs, NULL, arg_root); |
71da1673 | 2292 | if (r < 0) |
aa25270c ZJS |
2293 | return log_error_errno(r, "Failed to read %s%s: %m", |
2294 | strempty(arg_root), "/etc/login.defs"); | |
2295 | ||
d2a16737 | 2296 | c.login_defs_need_warning = true; |
4b6f9b20 | 2297 | |
aa25270c | 2298 | /* We pick a range that very conservative: we look at compiled-in maximum and the value in |
3f316701 | 2299 | * /etc/login.defs. That way the UIDs/GIDs which we allocate will be interpreted correctly, |
aa25270c ZJS |
2300 | * even if /etc/login.defs is removed later. (The bottom bound doesn't matter much, since |
2301 | * it's only used during allocation, so we use the configured value directly). */ | |
d2a16737 LP |
2302 | uid_t begin = c.login_defs.system_alloc_uid_min, |
2303 | end = MIN3((uid_t) SYSTEM_UID_MAX, c.login_defs.system_uid_max, c.login_defs.system_gid_max); | |
aa25270c | 2304 | if (begin < end) { |
d2a16737 | 2305 | r = uid_range_add(&c.uid_range, begin, end - begin + 1); |
aa25270c ZJS |
2306 | if (r < 0) |
2307 | return log_oom(); | |
2308 | } | |
8530dc44 LP |
2309 | } |
2310 | ||
d2a16737 | 2311 | r = add_implicit(&c); |
a12b0cc3 | 2312 | if (r < 0) |
71da1673 | 2313 | return r; |
a12b0cc3 | 2314 | |
64fe1095 ZJS |
2315 | if (!arg_dry_run) { |
2316 | lock = take_etc_passwd_lock(arg_root); | |
2317 | if (lock < 0) | |
2318 | return log_error_errno(lock, "Failed to take /etc/passwd lock: %m"); | |
2319 | } | |
1b992147 | 2320 | |
d2a16737 | 2321 | r = load_user_database(&c); |
71da1673 YW |
2322 | if (r < 0) |
2323 | return log_error_errno(r, "Failed to load user database: %m"); | |
1b992147 | 2324 | |
d2a16737 | 2325 | r = load_group_database(&c); |
71da1673 YW |
2326 | if (r < 0) |
2327 | return log_error_errno(r, "Failed to read group database: %m"); | |
1b992147 | 2328 | |
d2a16737 LP |
2329 | ORDERED_HASHMAP_FOREACH(i, c.groups) |
2330 | (void) process_item(&c, i); | |
1b992147 | 2331 | |
d2a16737 LP |
2332 | ORDERED_HASHMAP_FOREACH(i, c.users) |
2333 | (void) process_item(&c, i); | |
1b992147 | 2334 | |
d2a16737 | 2335 | return write_files(&c); |
1b992147 | 2336 | } |
71da1673 YW |
2337 | |
2338 | DEFINE_MAIN_FUNCTION(run); |