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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" |
1b992147 LP |
7 | #include "conf-files.h" |
8 | #include "copy.h" | |
99e9f896 | 9 | #include "creds-util.h" |
a0f29c76 | 10 | #include "def.h" |
0c3ee127 | 11 | #include "dissect-image.h" |
a0f29c76 | 12 | #include "fd-util.h" |
ee228be1 | 13 | #include "fileio.h" |
f97b34a6 | 14 | #include "format-util.h" |
dcd5c891 | 15 | #include "fs-util.h" |
3f6fd1ba | 16 | #include "hashmap.h" |
99e9f896 | 17 | #include "libcrypt-util.h" |
71da1673 | 18 | #include "main-func.h" |
99e9f896 | 19 | #include "memory-util.h" |
0c3ee127 | 20 | #include "mount-util.h" |
d481b830 | 21 | #include "nscd-flush.h" |
dcd5c891 | 22 | #include "pager.h" |
614b022c | 23 | #include "parse-argument.h" |
3f6fd1ba | 24 | #include "path-util.h" |
294bf0c3 | 25 | #include "pretty-print.h" |
3f6fd1ba | 26 | #include "selinux-util.h" |
0c3ee127 | 27 | #include "set.h" |
07630cea | 28 | #include "smack-util.h" |
3f6fd1ba | 29 | #include "specifier.h" |
07630cea | 30 | #include "string-util.h" |
3f6fd1ba | 31 | #include "strv.h" |
bf819d3a | 32 | #include "sync-util.h" |
e4de7287 | 33 | #include "tmpfile-util-label.h" |
b085d224 | 34 | #include "uid-alloc-range.h" |
3f6fd1ba | 35 | #include "uid-range.h" |
a0f29c76 | 36 | #include "user-util.h" |
3f6fd1ba LP |
37 | #include "utf8.h" |
38 | #include "util.h" | |
1b992147 LP |
39 | |
40 | typedef enum ItemType { | |
9a5af4b7 ZJS |
41 | ADD_USER = 'u', |
42 | ADD_GROUP = 'g', | |
a12b0cc3 | 43 | ADD_MEMBER = 'm', |
9a5af4b7 | 44 | ADD_RANGE = 'r', |
1b992147 | 45 | } ItemType; |
dcd5c891 | 46 | |
9a5af4b7 ZJS |
47 | static inline const char* item_type_to_string(ItemType t) { |
48 | switch (t) { | |
49 | case ADD_USER: | |
50 | return "user"; | |
51 | case ADD_GROUP: | |
52 | return "group"; | |
53 | case ADD_MEMBER: | |
54 | return "member"; | |
55 | case ADD_RANGE: | |
56 | return "range"; | |
57 | default: | |
58 | assert_not_reached(); | |
59 | } | |
60 | } | |
61 | ||
1b992147 LP |
62 | typedef struct Item { |
63 | ItemType type; | |
64 | ||
65 | char *name; | |
649916d3 | 66 | char *group_name; |
1b992147 LP |
67 | char *uid_path; |
68 | char *gid_path; | |
69 | char *description; | |
7629889c | 70 | char *home; |
7b1aaf66 | 71 | char *shell; |
1b992147 LP |
72 | |
73 | gid_t gid; | |
74 | uid_t uid; | |
75 | ||
76 | bool gid_set:1; | |
fb959f14 | 77 | |
3f316701 ZJS |
78 | /* When set the group with the specified GID must exist |
79 | * and the check if a UID clashes with the GID is skipped. | |
fb959f14 | 80 | */ |
b9ee05c2 | 81 | bool id_set_strict:1; |
fb959f14 | 82 | |
1b992147 LP |
83 | bool uid_set:1; |
84 | ||
c1b6b04f KS |
85 | bool todo_user:1; |
86 | bool todo_group:1; | |
1b992147 LP |
87 | } Item; |
88 | ||
89 | static char *arg_root = NULL; | |
0c3ee127 | 90 | static char *arg_image = NULL; |
ec0327d6 | 91 | static bool arg_cat_config = false; |
d16a1c1b | 92 | static const char *arg_replace = NULL; |
64fe1095 | 93 | static bool arg_dry_run = false; |
1b600bd5 | 94 | static bool arg_inline = false; |
0221d68a | 95 | static PagerFlags arg_pager_flags = 0; |
1b992147 | 96 | |
5bc9c980 MV |
97 | static OrderedHashmap *users = NULL, *groups = NULL; |
98 | static OrderedHashmap *todo_uids = NULL, *todo_gids = NULL; | |
99 | static OrderedHashmap *members = NULL; | |
1b992147 | 100 | |
71da1673 YW |
101 | static Hashmap *database_by_uid = NULL, *database_by_username = NULL; |
102 | static Hashmap *database_by_gid = NULL, *database_by_groupname = NULL; | |
103 | static Set *database_users = NULL, *database_groups = NULL; | |
1b992147 | 104 | |
fed1e721 | 105 | static uid_t search_uid = UID_INVALID; |
8530dc44 LP |
106 | static UidRange *uid_range = NULL; |
107 | static unsigned n_uid_range = 0; | |
1b992147 | 108 | |
4b6f9b20 ZJS |
109 | static UGIDAllocationRange login_defs = {}; |
110 | static bool login_defs_need_warning = false; | |
111 | ||
71da1673 YW |
112 | STATIC_DESTRUCTOR_REGISTER(groups, ordered_hashmap_freep); |
113 | STATIC_DESTRUCTOR_REGISTER(users, ordered_hashmap_freep); | |
114 | STATIC_DESTRUCTOR_REGISTER(members, ordered_hashmap_freep); | |
115 | STATIC_DESTRUCTOR_REGISTER(todo_uids, ordered_hashmap_freep); | |
116 | STATIC_DESTRUCTOR_REGISTER(todo_gids, ordered_hashmap_freep); | |
117 | STATIC_DESTRUCTOR_REGISTER(database_by_uid, hashmap_freep); | |
118 | STATIC_DESTRUCTOR_REGISTER(database_by_username, hashmap_freep); | |
119 | STATIC_DESTRUCTOR_REGISTER(database_users, set_free_freep); | |
120 | STATIC_DESTRUCTOR_REGISTER(database_by_gid, hashmap_freep); | |
121 | STATIC_DESTRUCTOR_REGISTER(database_by_groupname, hashmap_freep); | |
122 | STATIC_DESTRUCTOR_REGISTER(database_groups, set_free_freep); | |
123 | STATIC_DESTRUCTOR_REGISTER(uid_range, freep); | |
124 | STATIC_DESTRUCTOR_REGISTER(arg_root, freep); | |
0c3ee127 | 125 | STATIC_DESTRUCTOR_REGISTER(arg_image, freep); |
71da1673 | 126 | |
08c7c321 ZJS |
127 | static int errno_is_not_exists(int code) { |
128 | /* See getpwnam(3) and getgrnam(3): those codes and others can be returned if the user or group are | |
129 | * not found. */ | |
130 | return IN_SET(code, 0, ENOENT, ESRCH, EBADF, EPERM); | |
131 | } | |
132 | ||
4b6f9b20 ZJS |
133 | static void maybe_emit_login_defs_warning(void) { |
134 | if (!login_defs_need_warning) | |
135 | return; | |
136 | ||
137 | if (login_defs.system_alloc_uid_min != SYSTEM_ALLOC_UID_MIN || | |
138 | login_defs.system_uid_max != SYSTEM_UID_MAX) | |
139 | log_warning("login.defs specifies UID allocation range "UID_FMT"–"UID_FMT | |
140 | " that is different than the built-in defaults ("UID_FMT"–"UID_FMT")", | |
141 | login_defs.system_alloc_uid_min, login_defs.system_uid_max, | |
142 | SYSTEM_ALLOC_UID_MIN, SYSTEM_UID_MAX); | |
143 | if (login_defs.system_alloc_gid_min != SYSTEM_ALLOC_GID_MIN || | |
144 | login_defs.system_gid_max != SYSTEM_GID_MAX) | |
145 | log_warning("login.defs specifies GID allocation range "GID_FMT"–"GID_FMT | |
146 | " that is different than the built-in defaults ("GID_FMT"–"GID_FMT")", | |
147 | login_defs.system_alloc_gid_min, login_defs.system_gid_max, | |
148 | SYSTEM_ALLOC_GID_MIN, SYSTEM_GID_MAX); | |
149 | ||
150 | login_defs_need_warning = false; | |
151 | } | |
152 | ||
1b992147 LP |
153 | static int load_user_database(void) { |
154 | _cleanup_fclose_ FILE *f = NULL; | |
155 | const char *passwd_path; | |
156 | struct passwd *pw; | |
157 | int r; | |
158 | ||
1d13f648 | 159 | passwd_path = prefix_roota(arg_root, "/etc/passwd"); |
1b992147 LP |
160 | f = fopen(passwd_path, "re"); |
161 | if (!f) | |
162 | return errno == ENOENT ? 0 : -errno; | |
163 | ||
71da1673 | 164 | r = hashmap_ensure_allocated(&database_by_username, &string_hash_ops); |
1b992147 LP |
165 | if (r < 0) |
166 | return r; | |
167 | ||
71da1673 | 168 | r = hashmap_ensure_allocated(&database_by_uid, NULL); |
1b992147 LP |
169 | if (r < 0) |
170 | return r; | |
171 | ||
71da1673 | 172 | r = set_ensure_allocated(&database_users, NULL); |
1b992147 LP |
173 | if (r < 0) |
174 | return r; | |
175 | ||
100d5f6e | 176 | while ((r = fgetpwent_sane(f, &pw)) > 0) { |
43e948ee | 177 | char *n; |
340ac019 | 178 | int k, q; |
1b992147 LP |
179 | |
180 | n = strdup(pw->pw_name); | |
181 | if (!n) | |
182 | return -ENOMEM; | |
183 | ||
71da1673 YW |
184 | k = set_put(database_users, n); |
185 | if (k < 0) { | |
1b992147 LP |
186 | free(n); |
187 | return k; | |
188 | } | |
189 | ||
71da1673 YW |
190 | k = hashmap_put(database_by_username, n, UID_TO_PTR(pw->pw_uid)); |
191 | if (k < 0 && k != -EEXIST) | |
192 | return k; | |
1b992147 | 193 | |
71da1673 YW |
194 | q = hashmap_put(database_by_uid, UID_TO_PTR(pw->pw_uid), n); |
195 | if (q < 0 && q != -EEXIST) | |
196 | return q; | |
1b992147 | 197 | } |
100d5f6e | 198 | return r; |
1b992147 LP |
199 | } |
200 | ||
201 | static int load_group_database(void) { | |
202 | _cleanup_fclose_ FILE *f = NULL; | |
203 | const char *group_path; | |
204 | struct group *gr; | |
205 | int r; | |
206 | ||
1d13f648 | 207 | group_path = prefix_roota(arg_root, "/etc/group"); |
1b992147 LP |
208 | f = fopen(group_path, "re"); |
209 | if (!f) | |
210 | return errno == ENOENT ? 0 : -errno; | |
211 | ||
71da1673 | 212 | r = hashmap_ensure_allocated(&database_by_groupname, &string_hash_ops); |
1b992147 LP |
213 | if (r < 0) |
214 | return r; | |
215 | ||
71da1673 | 216 | r = hashmap_ensure_allocated(&database_by_gid, NULL); |
1b992147 LP |
217 | if (r < 0) |
218 | return r; | |
219 | ||
71da1673 | 220 | r = set_ensure_allocated(&database_groups, NULL); |
1b992147 LP |
221 | if (r < 0) |
222 | return r; | |
223 | ||
f030d36c | 224 | while ((r = fgetgrent_sane(f, &gr)) > 0) { |
1b992147 LP |
225 | char *n; |
226 | int k, q; | |
227 | ||
228 | n = strdup(gr->gr_name); | |
229 | if (!n) | |
230 | return -ENOMEM; | |
231 | ||
71da1673 YW |
232 | k = set_put(database_groups, n); |
233 | if (k < 0) { | |
1b992147 LP |
234 | free(n); |
235 | return k; | |
236 | } | |
237 | ||
71da1673 YW |
238 | k = hashmap_put(database_by_groupname, n, GID_TO_PTR(gr->gr_gid)); |
239 | if (k < 0 && k != -EEXIST) | |
240 | return k; | |
1b992147 | 241 | |
71da1673 YW |
242 | q = hashmap_put(database_by_gid, GID_TO_PTR(gr->gr_gid), n); |
243 | if (q < 0 && q != -EEXIST) | |
244 | return q; | |
1b992147 | 245 | } |
f030d36c | 246 | return r; |
1b992147 LP |
247 | } |
248 | ||
9f1c1940 | 249 | static int make_backup(const char *target, const char *x) { |
62c03398 | 250 | _cleanup_(unlink_and_freep) char *dst_tmp = NULL; |
9f1c1940 | 251 | _cleanup_fclose_ FILE *dst = NULL; |
62c03398 LP |
252 | _cleanup_close_ int src = -1; |
253 | const char *backup; | |
1b992147 LP |
254 | struct stat st; |
255 | int r; | |
256 | ||
62c03398 LP |
257 | assert(target); |
258 | assert(x); | |
259 | ||
1b992147 LP |
260 | src = open(x, O_RDONLY|O_CLOEXEC|O_NOCTTY); |
261 | if (src < 0) { | |
262 | if (errno == ENOENT) /* No backup necessary... */ | |
263 | return 0; | |
264 | ||
265 | return -errno; | |
266 | } | |
267 | ||
268 | if (fstat(src, &st) < 0) | |
269 | return -errno; | |
270 | ||
62c03398 | 271 | r = fopen_temporary_label( |
47fb161e | 272 | target, /* The path for which to the look up the label */ |
62c03398 | 273 | x, /* Where we want the file actually to end up */ |
47fb161e ZJS |
274 | &dst, /* The temporary file we write to */ |
275 | &dst_tmp); | |
9f1c1940 ZJS |
276 | if (r < 0) |
277 | return r; | |
1b992147 | 278 | |
f5fbe71d | 279 | r = copy_bytes(src, fileno(dst), UINT64_MAX, COPY_REFLINK); |
1b992147 | 280 | if (r < 0) |
62c03398 | 281 | return r; |
9f1c1940 | 282 | |
63c372cb | 283 | backup = strjoina(x, "-"); |
9f1c1940 | 284 | |
62c03398 LP |
285 | /* Copy over the access mask. Don't fail on chmod() or chown(). If it stays owned by us and/or |
286 | * unreadable by others, then it isn't too bad... */ | |
b78d7f24 | 287 | r = fchmod_and_chown_with_fallback(fileno(dst), dst_tmp, st.st_mode & 07777, st.st_uid, st.st_gid); |
c039af23 YW |
288 | if (r < 0) |
289 | log_warning_errno(r, "Failed to change access mode or ownership of %s: %m", backup); | |
1b992147 | 290 | |
62c03398 | 291 | if (futimens(fileno(dst), (const struct timespec[2]) { st.st_atim, st.st_mtim }) < 0) |
56f64d95 | 292 | log_warning_errno(errno, "Failed to fix access and modification time of %s: %m", backup); |
1b992147 | 293 | |
62c03398 | 294 | r = fsync_full(fileno(dst)); |
0675e94a | 295 | if (r < 0) |
62c03398 | 296 | return r; |
0675e94a | 297 | |
62c03398 LP |
298 | if (rename(dst_tmp, backup) < 0) |
299 | return errno; | |
1b992147 | 300 | |
7802194a | 301 | dst_tmp = mfree(dst_tmp); /* disable the unlink_and_freep() hook now that the file has been renamed */ |
1b992147 | 302 | return 0; |
1b992147 LP |
303 | } |
304 | ||
a12b0cc3 LP |
305 | static int putgrent_with_members(const struct group *gr, FILE *group) { |
306 | char **a; | |
307 | ||
308 | assert(gr); | |
309 | assert(group); | |
310 | ||
5bc9c980 | 311 | a = ordered_hashmap_get(members, gr->gr_name); |
a12b0cc3 LP |
312 | if (a) { |
313 | _cleanup_strv_free_ char **l = NULL; | |
314 | bool added = false; | |
a12b0cc3 LP |
315 | |
316 | l = strv_copy(gr->gr_mem); | |
317 | if (!l) | |
318 | return -ENOMEM; | |
319 | ||
320 | STRV_FOREACH(i, a) { | |
d29cc4d6 | 321 | if (strv_contains(l, *i)) |
a12b0cc3 LP |
322 | continue; |
323 | ||
324 | if (strv_extend(&l, *i) < 0) | |
325 | return -ENOMEM; | |
326 | ||
327 | added = true; | |
328 | } | |
329 | ||
330 | if (added) { | |
331 | struct group t; | |
100d5f6e | 332 | int r; |
a12b0cc3 LP |
333 | |
334 | strv_uniq(l); | |
335 | strv_sort(l); | |
336 | ||
337 | t = *gr; | |
338 | t.gr_mem = l; | |
339 | ||
100d5f6e FB |
340 | r = putgrent_sane(&t, group); |
341 | return r < 0 ? r : 1; | |
a12b0cc3 LP |
342 | } |
343 | } | |
344 | ||
100d5f6e | 345 | return putgrent_sane(gr, group); |
a12b0cc3 LP |
346 | } |
347 | ||
349cc4a5 | 348 | #if ENABLE_GSHADOW |
9ab315cc LP |
349 | static int putsgent_with_members(const struct sgrp *sg, FILE *gshadow) { |
350 | char **a; | |
351 | ||
352 | assert(sg); | |
353 | assert(gshadow); | |
354 | ||
5bc9c980 | 355 | a = ordered_hashmap_get(members, sg->sg_namp); |
9ab315cc LP |
356 | if (a) { |
357 | _cleanup_strv_free_ char **l = NULL; | |
358 | bool added = false; | |
9ab315cc LP |
359 | |
360 | l = strv_copy(sg->sg_mem); | |
361 | if (!l) | |
362 | return -ENOMEM; | |
363 | ||
364 | STRV_FOREACH(i, a) { | |
d29cc4d6 | 365 | if (strv_contains(l, *i)) |
9ab315cc LP |
366 | continue; |
367 | ||
368 | if (strv_extend(&l, *i) < 0) | |
369 | return -ENOMEM; | |
370 | ||
371 | added = true; | |
372 | } | |
373 | ||
374 | if (added) { | |
375 | struct sgrp t; | |
100d5f6e | 376 | int r; |
9ab315cc LP |
377 | |
378 | strv_uniq(l); | |
379 | strv_sort(l); | |
380 | ||
381 | t = *sg; | |
382 | t.sg_mem = l; | |
383 | ||
100d5f6e FB |
384 | r = putsgent_sane(&t, gshadow); |
385 | return r < 0 ? r : 1; | |
9ab315cc LP |
386 | } |
387 | } | |
388 | ||
100d5f6e | 389 | return putsgent_sane(sg, gshadow); |
9ab315cc | 390 | } |
b14e1b43 | 391 | #endif |
9ab315cc | 392 | |
7b1aaf66 | 393 | static const char* default_shell(uid_t uid) { |
6db90462 | 394 | return uid == 0 ? "/bin/sh" : NOLOGIN; |
7b1aaf66 ZJS |
395 | } |
396 | ||
b20b0b66 FB |
397 | static int write_temporary_passwd(const char *passwd_path, FILE **tmpfile, char **tmpfile_path) { |
398 | _cleanup_fclose_ FILE *original = NULL, *passwd = NULL; | |
1dd98a71 | 399 | _cleanup_(unlink_and_freep) char *passwd_tmp = NULL; |
563dc6f8 | 400 | struct passwd *pw = NULL; |
1b992147 LP |
401 | Item *i; |
402 | int r; | |
403 | ||
98167876 | 404 | if (ordered_hashmap_isempty(todo_uids)) |
b20b0b66 | 405 | return 0; |
1b992147 | 406 | |
64fe1095 ZJS |
407 | if (arg_dry_run) { |
408 | log_info("Would write /etc/passwd…"); | |
409 | return 0; | |
410 | } | |
411 | ||
b20b0b66 FB |
412 | r = fopen_temporary_label("/etc/passwd", passwd_path, &passwd, &passwd_tmp); |
413 | if (r < 0) | |
335f6ab4 | 414 | return log_debug_errno(r, "Failed to open temporary copy of %s: %m", passwd_path); |
b20b0b66 FB |
415 | |
416 | original = fopen(passwd_path, "re"); | |
417 | if (original) { | |
b20b0b66 | 418 | |
82855aa6 ZJS |
419 | /* Allow fallback path for when /proc is not mounted. On any normal system /proc will be |
420 | * mounted, but e.g. when 'dnf --installroot' is used, it might not be. There is no security | |
421 | * relevance here, since the environment is ultimately trusted, and not requiring /proc makes | |
422 | * it easier to depend on sysusers in packaging scripts and suchlike. */ | |
423 | r = copy_rights_with_fallback(fileno(original), fileno(passwd), passwd_tmp); | |
1b992147 | 424 | if (r < 0) |
335f6ab4 ZJS |
425 | return log_debug_errno(r, "Failed to copy permissions from %s to %s: %m", |
426 | passwd_path, passwd_tmp); | |
1b992147 | 427 | |
100d5f6e | 428 | while ((r = fgetpwent_sane(original, &pw)) > 0) { |
5bc9c980 | 429 | i = ordered_hashmap_get(users, pw->pw_name); |
330d1def ZJS |
430 | if (i && i->todo_user) |
431 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
432 | "%s: User \"%s\" already exists.", | |
433 | passwd_path, pw->pw_name); | |
e3c72c21 | 434 | |
330d1def ZJS |
435 | if (ordered_hashmap_contains(todo_uids, UID_TO_PTR(pw->pw_uid))) |
436 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
437 | "%s: Detected collision for UID " UID_FMT ".", | |
438 | passwd_path, pw->pw_uid); | |
b20b0b66 | 439 | |
563dc6f8 FB |
440 | /* Make sure we keep the NIS entries (if any) at the end. */ |
441 | if (IN_SET(pw->pw_name[0], '+', '-')) | |
442 | break; | |
443 | ||
100d5f6e FB |
444 | r = putpwent_sane(pw, passwd); |
445 | if (r < 0) | |
335f6ab4 ZJS |
446 | return log_debug_errno(r, "Failed to add existing user \"%s\" to temporary passwd file: %m", |
447 | pw->pw_name); | |
b20b0b66 | 448 | } |
100d5f6e | 449 | if (r < 0) |
335f6ab4 | 450 | return log_debug_errno(r, "Failed to read %s: %m", passwd_path); |
1dd98a71 FB |
451 | |
452 | } else { | |
453 | if (errno != ENOENT) | |
335f6ab4 | 454 | return log_debug_errno(errno, "Failed to open %s: %m", passwd_path); |
1dd98a71 | 455 | if (fchmod(fileno(passwd), 0644) < 0) |
335f6ab4 | 456 | return log_debug_errno(errno, "Failed to fchmod %s: %m", passwd_tmp); |
b20b0b66 FB |
457 | } |
458 | ||
90e74a66 | 459 | ORDERED_HASHMAP_FOREACH(i, todo_uids) { |
99e9f896 LP |
460 | _cleanup_free_ char *creds_shell = NULL, *cn = NULL; |
461 | ||
b20b0b66 FB |
462 | struct passwd n = { |
463 | .pw_name = i->name, | |
464 | .pw_uid = i->uid, | |
465 | .pw_gid = i->gid, | |
d610e142 | 466 | .pw_gecos = (char*) strempty(i->description), |
1b992147 | 467 | |
b20b0b66 | 468 | /* "x" means the password is stored in the shadow file */ |
53c25ac9 | 469 | .pw_passwd = (char*) PASSWORD_SEE_SHADOW, |
a12b0cc3 | 470 | |
b20b0b66 | 471 | /* We default to the root directory as home */ |
636e72bc | 472 | .pw_dir = i->home ?: (char*) "/", |
1b992147 | 473 | |
b20b0b66 FB |
474 | /* Initialize the shell to nologin, with one exception: |
475 | * for root we patch in something special */ | |
7b1aaf66 | 476 | .pw_shell = i->shell ?: (char*) default_shell(i->uid), |
b20b0b66 | 477 | }; |
9ab315cc | 478 | |
99e9f896 LP |
479 | /* Try to pick up the shell for this account via the credentials logic */ |
480 | cn = strjoin("passwd.shell.", i->name); | |
481 | if (!cn) | |
482 | return -ENOMEM; | |
483 | ||
484 | r = read_credential(cn, (void**) &creds_shell, NULL); | |
485 | if (r < 0) | |
486 | log_debug_errno(r, "Couldn't read credential '%s', ignoring: %m", cn); | |
487 | else | |
488 | n.pw_shell = creds_shell; | |
489 | ||
100d5f6e FB |
490 | r = putpwent_sane(&n, passwd); |
491 | if (r < 0) | |
335f6ab4 ZJS |
492 | return log_debug_errno(r, "Failed to add new user \"%s\" to temporary passwd file: %m", |
493 | pw->pw_name); | |
b20b0b66 FB |
494 | } |
495 | ||
563dc6f8 FB |
496 | /* Append the remaining NIS entries if any */ |
497 | while (pw) { | |
100d5f6e FB |
498 | r = putpwent_sane(pw, passwd); |
499 | if (r < 0) | |
335f6ab4 ZJS |
500 | return log_debug_errno(r, "Failed to add existing user \"%s\" to temporary passwd file: %m", |
501 | pw->pw_name); | |
563dc6f8 | 502 | |
100d5f6e FB |
503 | r = fgetpwent_sane(original, &pw); |
504 | if (r < 0) | |
335f6ab4 | 505 | return log_debug_errno(r, "Failed to read %s: %m", passwd_path); |
100d5f6e FB |
506 | if (r == 0) |
507 | break; | |
563dc6f8 | 508 | } |
563dc6f8 | 509 | |
b20b0b66 FB |
510 | r = fflush_and_check(passwd); |
511 | if (r < 0) | |
335f6ab4 | 512 | return log_debug_errno(r, "Failed to flush %s: %m", passwd_tmp); |
b20b0b66 | 513 | |
1cc6c93a YW |
514 | *tmpfile = TAKE_PTR(passwd); |
515 | *tmpfile_path = TAKE_PTR(passwd_tmp); | |
516 | ||
b20b0b66 | 517 | return 0; |
b20b0b66 FB |
518 | } |
519 | ||
520 | static int write_temporary_shadow(const char *shadow_path, FILE **tmpfile, char **tmpfile_path) { | |
521 | _cleanup_fclose_ FILE *original = NULL, *shadow = NULL; | |
1dd98a71 | 522 | _cleanup_(unlink_and_freep) char *shadow_tmp = NULL; |
19ec7de2 | 523 | struct spwd *sp = NULL; |
b20b0b66 FB |
524 | long lstchg; |
525 | Item *i; | |
526 | int r; | |
527 | ||
98167876 | 528 | if (ordered_hashmap_isempty(todo_uids)) |
b20b0b66 FB |
529 | return 0; |
530 | ||
64fe1095 ZJS |
531 | if (arg_dry_run) { |
532 | log_info("Would write /etc/shadow…"); | |
533 | return 0; | |
534 | } | |
535 | ||
b20b0b66 FB |
536 | r = fopen_temporary_label("/etc/shadow", shadow_path, &shadow, &shadow_tmp); |
537 | if (r < 0) | |
335f6ab4 | 538 | return log_debug_errno(r, "Failed to open temporary copy of %s: %m", shadow_path); |
9ab315cc | 539 | |
b20b0b66 FB |
540 | lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY); |
541 | ||
542 | original = fopen(shadow_path, "re"); | |
543 | if (original) { | |
b20b0b66 | 544 | |
82855aa6 | 545 | r = copy_rights_with_fallback(fileno(original), fileno(shadow), shadow_tmp); |
9ab315cc | 546 | if (r < 0) |
335f6ab4 ZJS |
547 | return log_debug_errno(r, "Failed to copy permissions from %s to %s: %m", |
548 | shadow_path, shadow_tmp); | |
9ab315cc | 549 | |
100d5f6e | 550 | while ((r = fgetspent_sane(original, &sp)) > 0) { |
5bc9c980 | 551 | i = ordered_hashmap_get(users, sp->sp_namp); |
b20b0b66 FB |
552 | if (i && i->todo_user) { |
553 | /* we will update the existing entry */ | |
554 | sp->sp_lstchg = lstchg; | |
e3c72c21 | 555 | |
b20b0b66 FB |
556 | /* only the /etc/shadow stage is left, so we can |
557 | * safely remove the item from the todo set */ | |
558 | i->todo_user = false; | |
5bc9c980 | 559 | ordered_hashmap_remove(todo_uids, UID_TO_PTR(i->uid)); |
9ab315cc | 560 | } |
b20b0b66 | 561 | |
19ec7de2 FB |
562 | /* Make sure we keep the NIS entries (if any) at the end. */ |
563 | if (IN_SET(sp->sp_namp[0], '+', '-')) | |
564 | break; | |
565 | ||
100d5f6e FB |
566 | r = putspent_sane(sp, shadow); |
567 | if (r < 0) | |
335f6ab4 ZJS |
568 | return log_debug_errno(r, "Failed to add existing user \"%s\" to temporary shadow file: %m", |
569 | sp->sp_namp); | |
570 | ||
b20b0b66 | 571 | } |
100d5f6e | 572 | if (r < 0) |
335f6ab4 | 573 | return log_debug_errno(r, "Failed to read %s: %m", shadow_path); |
1dd98a71 FB |
574 | |
575 | } else { | |
576 | if (errno != ENOENT) | |
335f6ab4 | 577 | return log_debug_errno(errno, "Failed to open %s: %m", shadow_path); |
1dd98a71 | 578 | if (fchmod(fileno(shadow), 0000) < 0) |
335f6ab4 | 579 | return log_debug_errno(errno, "Failed to fchmod %s: %m", shadow_tmp); |
b20b0b66 | 580 | } |
9ab315cc | 581 | |
90e74a66 | 582 | ORDERED_HASHMAP_FOREACH(i, todo_uids) { |
99e9f896 LP |
583 | _cleanup_(erase_and_freep) char *creds_password = NULL; |
584 | _cleanup_free_ char *cn = NULL; | |
585 | ||
b20b0b66 FB |
586 | struct spwd n = { |
587 | .sp_namp = i->name, | |
53c25ac9 | 588 | .sp_pwdp = (char*) PASSWORD_LOCKED_AND_INVALID, |
b20b0b66 FB |
589 | .sp_lstchg = lstchg, |
590 | .sp_min = -1, | |
591 | .sp_max = -1, | |
592 | .sp_warn = -1, | |
593 | .sp_inact = -1, | |
12c82937 | 594 | .sp_expire = -1, |
f5fbe71d | 595 | .sp_flag = ULONG_MAX, /* this appears to be what everybody does ... */ |
b20b0b66 | 596 | }; |
9ab315cc | 597 | |
99e9f896 LP |
598 | /* Try to pick up the password for this account via the credentials logic */ |
599 | cn = strjoin("passwd.hashed-password.", i->name); | |
600 | if (!cn) | |
601 | return -ENOMEM; | |
602 | ||
603 | r = read_credential(cn, (void**) &creds_password, NULL); | |
604 | if (r == -ENOENT) { | |
605 | _cleanup_(erase_and_freep) char *plaintext_password = NULL; | |
606 | ||
607 | free(cn); | |
608 | cn = strjoin("passwd.plaintext-password.", i->name); | |
609 | if (!cn) | |
610 | return -ENOMEM; | |
611 | ||
612 | r = read_credential(cn, (void**) &plaintext_password, NULL); | |
613 | if (r < 0) | |
614 | log_debug_errno(r, "Couldn't read credential '%s', ignoring: %m", cn); | |
615 | else { | |
616 | r = hash_password(plaintext_password, &creds_password); | |
617 | if (r < 0) | |
618 | return log_debug_errno(r, "Failed to hash password: %m"); | |
619 | } | |
620 | } else if (r < 0) | |
621 | log_debug_errno(r, "Couldn't read credential '%s', ignoring: %m", cn); | |
622 | ||
623 | if (creds_password) | |
624 | n.sp_pwdp = creds_password; | |
625 | ||
100d5f6e FB |
626 | r = putspent_sane(&n, shadow); |
627 | if (r < 0) | |
335f6ab4 ZJS |
628 | return log_debug_errno(r, "Failed to add new user \"%s\" to temporary shadow file: %m", |
629 | sp->sp_namp); | |
1b992147 | 630 | } |
19ec7de2 FB |
631 | |
632 | /* Append the remaining NIS entries if any */ | |
633 | while (sp) { | |
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); | |
19ec7de2 | 638 | |
100d5f6e FB |
639 | r = fgetspent_sane(original, &sp); |
640 | if (r < 0) | |
335f6ab4 | 641 | return log_debug_errno(r, "Failed to read %s: %m", shadow_path); |
100d5f6e FB |
642 | if (r == 0) |
643 | break; | |
19ec7de2 FB |
644 | } |
645 | if (!IN_SET(errno, 0, ENOENT)) | |
646 | return -errno; | |
1b992147 | 647 | |
0675e94a | 648 | r = fflush_sync_and_check(shadow); |
b20b0b66 | 649 | if (r < 0) |
335f6ab4 | 650 | return log_debug_errno(r, "Failed to flush %s: %m", shadow_tmp); |
b20b0b66 | 651 | |
1cc6c93a YW |
652 | *tmpfile = TAKE_PTR(shadow); |
653 | *tmpfile_path = TAKE_PTR(shadow_tmp); | |
654 | ||
b20b0b66 | 655 | return 0; |
b20b0b66 | 656 | } |
1b992147 | 657 | |
b20b0b66 FB |
658 | static int write_temporary_group(const char *group_path, FILE **tmpfile, char **tmpfile_path) { |
659 | _cleanup_fclose_ FILE *original = NULL, *group = NULL; | |
1dd98a71 | 660 | _cleanup_(unlink_and_freep) char *group_tmp = NULL; |
b20b0b66 | 661 | bool group_changed = false; |
563dc6f8 | 662 | struct group *gr = NULL; |
b20b0b66 FB |
663 | Item *i; |
664 | int r; | |
1b992147 | 665 | |
98167876 | 666 | if (ordered_hashmap_isempty(todo_gids) && ordered_hashmap_isempty(members)) |
b20b0b66 | 667 | return 0; |
e3c72c21 | 668 | |
64fe1095 ZJS |
669 | if (arg_dry_run) { |
670 | log_info("Would write /etc/group…"); | |
671 | return 0; | |
672 | } | |
673 | ||
b20b0b66 FB |
674 | r = fopen_temporary_label("/etc/group", group_path, &group, &group_tmp); |
675 | if (r < 0) | |
335f6ab4 | 676 | return log_debug_errno(r, "Failed to open temporary copy of %s: %m", group_path); |
b20b0b66 FB |
677 | |
678 | original = fopen(group_path, "re"); | |
679 | if (original) { | |
b20b0b66 | 680 | |
82855aa6 | 681 | r = copy_rights_with_fallback(fileno(original), fileno(group), group_tmp); |
b20b0b66 | 682 | if (r < 0) |
335f6ab4 ZJS |
683 | return log_debug_errno(r, "Failed to copy permissions from %s to %s: %m", |
684 | group_path, group_tmp); | |
b20b0b66 | 685 | |
100d5f6e | 686 | while ((r = fgetgrent_sane(original, &gr)) > 0) { |
b20b0b66 FB |
687 | /* Safety checks against name and GID collisions. Normally, |
688 | * this should be unnecessary, but given that we look at the | |
689 | * entries anyway here, let's make an extra verification | |
690 | * step that we don't generate duplicate entries. */ | |
691 | ||
5bc9c980 | 692 | i = ordered_hashmap_get(groups, gr->gr_name); |
330d1def ZJS |
693 | if (i && i->todo_group) |
694 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
695 | "%s: Group \"%s\" already exists.", | |
696 | group_path, gr->gr_name); | |
b20b0b66 | 697 | |
330d1def ZJS |
698 | if (ordered_hashmap_contains(todo_gids, GID_TO_PTR(gr->gr_gid))) |
699 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
700 | "%s: Detected collision for GID " GID_FMT ".", | |
701 | group_path, gr->gr_gid); | |
1b992147 | 702 | |
563dc6f8 FB |
703 | /* Make sure we keep the NIS entries (if any) at the end. */ |
704 | if (IN_SET(gr->gr_name[0], '+', '-')) | |
705 | break; | |
706 | ||
b20b0b66 FB |
707 | r = putgrent_with_members(gr, group); |
708 | if (r < 0) | |
335f6ab4 ZJS |
709 | return log_debug_errno(r, "Failed to add existing group \"%s\" to temporary group file: %m", |
710 | gr->gr_name); | |
b20b0b66 FB |
711 | if (r > 0) |
712 | group_changed = true; | |
b20b0b66 | 713 | } |
100d5f6e | 714 | if (r < 0) |
335f6ab4 | 715 | return log_debug_errno(r, "Failed to read %s: %m", group_path); |
1dd98a71 FB |
716 | |
717 | } else { | |
718 | if (errno != ENOENT) | |
335f6ab4 | 719 | return log_debug_errno(errno, "Failed to open %s: %m", group_path); |
1dd98a71 | 720 | if (fchmod(fileno(group), 0644) < 0) |
335f6ab4 | 721 | return log_debug_errno(errno, "Failed to fchmod %s: %m", group_tmp); |
b20b0b66 | 722 | } |
7629889c | 723 | |
90e74a66 | 724 | ORDERED_HASHMAP_FOREACH(i, todo_gids) { |
b20b0b66 FB |
725 | struct group n = { |
726 | .gr_name = i->name, | |
727 | .gr_gid = i->gid, | |
53c25ac9 | 728 | .gr_passwd = (char*) PASSWORD_SEE_SHADOW, |
b20b0b66 | 729 | }; |
1b992147 | 730 | |
b20b0b66 FB |
731 | r = putgrent_with_members(&n, group); |
732 | if (r < 0) | |
335f6ab4 ZJS |
733 | return log_debug_errno(r, "Failed to add new group \"%s\" to temporary group file: %m", |
734 | gr->gr_name); | |
7629889c | 735 | |
b20b0b66 FB |
736 | group_changed = true; |
737 | } | |
1b992147 | 738 | |
563dc6f8 FB |
739 | /* Append the remaining NIS entries if any */ |
740 | while (gr) { | |
100d5f6e FB |
741 | r = putgrent_sane(gr, group); |
742 | if (r < 0) | |
335f6ab4 ZJS |
743 | return log_debug_errno(r, "Failed to add existing group \"%s\" to temporary group file: %m", |
744 | gr->gr_name); | |
563dc6f8 | 745 | |
100d5f6e FB |
746 | r = fgetgrent_sane(original, &gr); |
747 | if (r < 0) | |
335f6ab4 | 748 | return log_debug_errno(r, "Failed to read %s: %m", group_path); |
100d5f6e FB |
749 | if (r == 0) |
750 | break; | |
563dc6f8 | 751 | } |
563dc6f8 | 752 | |
0675e94a | 753 | r = fflush_sync_and_check(group); |
b20b0b66 | 754 | if (r < 0) |
335f6ab4 | 755 | return log_debug_errno(r, "Failed to flush %s: %m", group_tmp); |
1b992147 | 756 | |
b20b0b66 | 757 | if (group_changed) { |
1cc6c93a YW |
758 | *tmpfile = TAKE_PTR(group); |
759 | *tmpfile_path = TAKE_PTR(group_tmp); | |
b20b0b66 FB |
760 | } |
761 | return 0; | |
b20b0b66 FB |
762 | } |
763 | ||
764 | static int write_temporary_gshadow(const char * gshadow_path, FILE **tmpfile, char **tmpfile_path) { | |
349cc4a5 | 765 | #if ENABLE_GSHADOW |
b20b0b66 | 766 | _cleanup_fclose_ FILE *original = NULL, *gshadow = NULL; |
1dd98a71 | 767 | _cleanup_(unlink_and_freep) char *gshadow_tmp = NULL; |
b20b0b66 | 768 | bool group_changed = false; |
b20b0b66 FB |
769 | Item *i; |
770 | int r; | |
771 | ||
98167876 | 772 | if (ordered_hashmap_isempty(todo_gids) && ordered_hashmap_isempty(members)) |
b20b0b66 FB |
773 | return 0; |
774 | ||
64fe1095 ZJS |
775 | if (arg_dry_run) { |
776 | log_info("Would write /etc/gshadow…"); | |
777 | return 0; | |
778 | } | |
779 | ||
b20b0b66 FB |
780 | r = fopen_temporary_label("/etc/gshadow", gshadow_path, &gshadow, &gshadow_tmp); |
781 | if (r < 0) | |
335f6ab4 | 782 | return log_debug_errno(r, "Failed to open temporary copy of %s: %m", gshadow_path); |
9ab315cc | 783 | |
b20b0b66 FB |
784 | original = fopen(gshadow_path, "re"); |
785 | if (original) { | |
786 | struct sgrp *sg; | |
787 | ||
82855aa6 | 788 | r = copy_rights_with_fallback(fileno(original), fileno(gshadow), gshadow_tmp); |
1b992147 | 789 | if (r < 0) |
335f6ab4 ZJS |
790 | return log_debug_errno(r, "Failed to copy permissions from %s to %s: %m", |
791 | gshadow_path, gshadow_tmp); | |
9ab315cc | 792 | |
100d5f6e | 793 | while ((r = fgetsgent_sane(original, &sg)) > 0) { |
c5abf225 | 794 | |
5bc9c980 | 795 | i = ordered_hashmap_get(groups, sg->sg_namp); |
330d1def ZJS |
796 | if (i && i->todo_group) |
797 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
798 | "%s: Group \"%s\" already exists.", | |
799 | gshadow_path, sg->sg_namp); | |
9ab315cc | 800 | |
b20b0b66 | 801 | r = putsgent_with_members(sg, gshadow); |
fff19499 | 802 | if (r < 0) |
335f6ab4 ZJS |
803 | return log_debug_errno(r, "Failed to add existing group \"%s\" to temporary gshadow file: %m", |
804 | sg->sg_namp); | |
b20b0b66 FB |
805 | if (r > 0) |
806 | group_changed = true; | |
b20b0b66 | 807 | } |
100d5f6e FB |
808 | if (r < 0) |
809 | return r; | |
1dd98a71 FB |
810 | |
811 | } else { | |
812 | if (errno != ENOENT) | |
335f6ab4 | 813 | return log_debug_errno(errno, "Failed to open %s: %m", gshadow_path); |
1dd98a71 | 814 | if (fchmod(fileno(gshadow), 0000) < 0) |
335f6ab4 | 815 | return log_debug_errno(errno, "Failed to fchmod %s: %m", gshadow_tmp); |
b20b0b66 | 816 | } |
9ab315cc | 817 | |
90e74a66 | 818 | ORDERED_HASHMAP_FOREACH(i, todo_gids) { |
b20b0b66 FB |
819 | struct sgrp n = { |
820 | .sg_namp = i->name, | |
53c25ac9 | 821 | .sg_passwd = (char*) PASSWORD_LOCKED_AND_INVALID, |
b20b0b66 | 822 | }; |
9ab315cc | 823 | |
b20b0b66 | 824 | r = putsgent_with_members(&n, gshadow); |
9ab315cc | 825 | if (r < 0) |
335f6ab4 ZJS |
826 | return log_debug_errno(r, "Failed to add new group \"%s\" to temporary gshadow file: %m", |
827 | n.sg_namp); | |
b20b0b66 FB |
828 | |
829 | group_changed = true; | |
9ab315cc LP |
830 | } |
831 | ||
0675e94a | 832 | r = fflush_sync_and_check(gshadow); |
b20b0b66 | 833 | if (r < 0) |
335f6ab4 | 834 | return log_debug_errno(r, "Failed to flush %s: %m", gshadow_tmp); |
b20b0b66 | 835 | |
9ab315cc | 836 | if (group_changed) { |
1cc6c93a YW |
837 | *tmpfile = TAKE_PTR(gshadow); |
838 | *tmpfile_path = TAKE_PTR(gshadow_tmp); | |
b20b0b66 | 839 | } |
b14e1b43 | 840 | #endif |
62d1c93a | 841 | return 0; |
b20b0b66 FB |
842 | } |
843 | ||
844 | static int write_files(void) { | |
b20b0b66 | 845 | _cleanup_fclose_ FILE *passwd = NULL, *group = NULL, *shadow = NULL, *gshadow = NULL; |
1dd98a71 | 846 | _cleanup_(unlink_and_freep) char *passwd_tmp = NULL, *group_tmp = NULL, *shadow_tmp = NULL, *gshadow_tmp = NULL; |
62d1c93a | 847 | const char *passwd_path, *shadow_path, *group_path, *gshadow_path; |
b20b0b66 FB |
848 | int r; |
849 | ||
850 | passwd_path = prefix_roota(arg_root, "/etc/passwd"); | |
851 | shadow_path = prefix_roota(arg_root, "/etc/shadow"); | |
852 | group_path = prefix_roota(arg_root, "/etc/group"); | |
853 | gshadow_path = prefix_roota(arg_root, "/etc/gshadow"); | |
854 | ||
855 | r = write_temporary_group(group_path, &group, &group_tmp); | |
856 | if (r < 0) | |
1dd98a71 | 857 | return r; |
b20b0b66 FB |
858 | |
859 | r = write_temporary_gshadow(gshadow_path, &gshadow, &gshadow_tmp); | |
860 | if (r < 0) | |
1dd98a71 | 861 | return r; |
b20b0b66 FB |
862 | |
863 | r = write_temporary_passwd(passwd_path, &passwd, &passwd_tmp); | |
864 | if (r < 0) | |
1dd98a71 | 865 | return r; |
b20b0b66 FB |
866 | |
867 | r = write_temporary_shadow(shadow_path, &shadow, &shadow_tmp); | |
868 | if (r < 0) | |
1dd98a71 | 869 | return r; |
b20b0b66 FB |
870 | |
871 | /* Make a backup of the old files */ | |
872 | if (group) { | |
873 | r = make_backup("/etc/group", group_path); | |
874 | if (r < 0) | |
335f6ab4 | 875 | return log_debug_errno(r, "Failed to make backup %s: %m", group_path); |
b20b0b66 FB |
876 | } |
877 | if (gshadow) { | |
878 | r = make_backup("/etc/gshadow", gshadow_path); | |
879 | if (r < 0) | |
335f6ab4 | 880 | return log_debug_errno(r, "Failed to make backup %s: %m", gshadow_path); |
1b992147 LP |
881 | } |
882 | ||
883 | if (passwd) { | |
9f1c1940 | 884 | r = make_backup("/etc/passwd", passwd_path); |
1b992147 | 885 | if (r < 0) |
335f6ab4 | 886 | return log_debug_errno(r, "Failed to make backup %s: %m", passwd_path); |
1b992147 | 887 | } |
9ab315cc LP |
888 | if (shadow) { |
889 | r = make_backup("/etc/shadow", shadow_path); | |
890 | if (r < 0) | |
335f6ab4 | 891 | return log_debug_errno(r, "Failed to make backup %s: %m", shadow_path); |
9ab315cc | 892 | } |
1b992147 LP |
893 | |
894 | /* And make the new files count */ | |
b20b0b66 | 895 | if (group) { |
2da3dc69 | 896 | r = rename_and_apply_smack_floor_label(group_tmp, group_path); |
b20b0b66 | 897 | if (r < 0) |
335f6ab4 ZJS |
898 | return log_debug_errno(r, "Failed to rename %s to %s: %m", |
899 | group_tmp, group_path); | |
b20b0b66 | 900 | group_tmp = mfree(group_tmp); |
d481b830 FB |
901 | |
902 | if (!arg_root && !arg_image) | |
903 | (void) nscd_flush_cache(STRV_MAKE("group")); | |
b20b0b66 FB |
904 | } |
905 | if (gshadow) { | |
2da3dc69 | 906 | r = rename_and_apply_smack_floor_label(gshadow_tmp, gshadow_path); |
b20b0b66 | 907 | if (r < 0) |
335f6ab4 ZJS |
908 | return log_debug_errno(r, "Failed to rename %s to %s: %m", |
909 | gshadow_tmp, gshadow_path); | |
1b992147 | 910 | |
b20b0b66 | 911 | gshadow_tmp = mfree(gshadow_tmp); |
1b992147 LP |
912 | } |
913 | ||
914 | if (passwd) { | |
2da3dc69 | 915 | r = rename_and_apply_smack_floor_label(passwd_tmp, passwd_path); |
c02e7b1e | 916 | if (r < 0) |
335f6ab4 ZJS |
917 | return log_debug_errno(r, "Failed to rename %s to %s: %m", |
918 | passwd_tmp, passwd_path); | |
1b992147 | 919 | |
97b11eed | 920 | passwd_tmp = mfree(passwd_tmp); |
d481b830 FB |
921 | |
922 | if (!arg_root && !arg_image) | |
923 | (void) nscd_flush_cache(STRV_MAKE("passwd")); | |
1b992147 | 924 | } |
9ab315cc | 925 | if (shadow) { |
2da3dc69 | 926 | r = rename_and_apply_smack_floor_label(shadow_tmp, shadow_path); |
c02e7b1e | 927 | if (r < 0) |
335f6ab4 ZJS |
928 | return log_debug_errno(r, "Failed to rename %s to %s: %m", |
929 | shadow_tmp, shadow_path); | |
9ab315cc | 930 | |
97b11eed | 931 | shadow_tmp = mfree(shadow_tmp); |
9ab315cc | 932 | } |
1b992147 | 933 | |
1dd98a71 | 934 | return 0; |
1b992147 LP |
935 | } |
936 | ||
b9ee05c2 | 937 | static int uid_is_ok(uid_t uid, const char *name, bool check_with_gid) { |
1b992147 LP |
938 | |
939 | /* Let's see if we already have assigned the UID a second time */ | |
5bc9c980 | 940 | if (ordered_hashmap_get(todo_uids, UID_TO_PTR(uid))) |
1b992147 LP |
941 | return 0; |
942 | ||
943 | /* Try to avoid using uids that are already used by a group | |
944 | * that doesn't have the same name as our new user. */ | |
b9ee05c2 | 945 | if (check_with_gid) { |
62d1c93a ZJS |
946 | Item *i; |
947 | ||
b9ee05c2 MV |
948 | i = ordered_hashmap_get(todo_gids, GID_TO_PTR(uid)); |
949 | if (i && !streq(i->name, name)) | |
950 | return 0; | |
951 | } | |
1b992147 LP |
952 | |
953 | /* Let's check the files directly */ | |
71da1673 | 954 | if (hashmap_contains(database_by_uid, UID_TO_PTR(uid))) |
1b992147 LP |
955 | return 0; |
956 | ||
b9ee05c2 | 957 | if (check_with_gid) { |
62d1c93a ZJS |
958 | const char *n; |
959 | ||
71da1673 | 960 | n = hashmap_get(database_by_gid, GID_TO_PTR(uid)); |
b9ee05c2 MV |
961 | if (n && !streq(n, name)) |
962 | return 0; | |
963 | } | |
1b992147 LP |
964 | |
965 | /* Let's also check via NSS, to avoid UID clashes over LDAP and such, just in case */ | |
966 | if (!arg_root) { | |
62d1c93a ZJS |
967 | struct passwd *p; |
968 | struct group *g; | |
969 | ||
1b992147 LP |
970 | errno = 0; |
971 | p = getpwuid(uid); | |
972 | if (p) | |
973 | return 0; | |
b0284aba | 974 | if (!IN_SET(errno, 0, ENOENT)) |
1b992147 LP |
975 | return -errno; |
976 | ||
b9ee05c2 MV |
977 | if (check_with_gid) { |
978 | errno = 0; | |
979 | g = getgrgid((gid_t) uid); | |
980 | if (g) { | |
981 | if (!streq(g->gr_name, name)) | |
982 | return 0; | |
983 | } else if (!IN_SET(errno, 0, ENOENT)) | |
984 | return -errno; | |
985 | } | |
1b992147 LP |
986 | } |
987 | ||
988 | return 1; | |
989 | } | |
990 | ||
991 | static int root_stat(const char *p, struct stat *st) { | |
992 | const char *fix; | |
993 | ||
1d13f648 | 994 | fix = prefix_roota(arg_root, p); |
7c248223 | 995 | return RET_NERRNO(stat(fix, st)); |
1b992147 LP |
996 | } |
997 | ||
998 | static int read_id_from_file(Item *i, uid_t *_uid, gid_t *_gid) { | |
999 | struct stat st; | |
1000 | bool found_uid = false, found_gid = false; | |
56d21cde PDS |
1001 | uid_t uid = 0; |
1002 | gid_t gid = 0; | |
1b992147 LP |
1003 | |
1004 | assert(i); | |
1005 | ||
3f316701 | 1006 | /* First, try to get the GID directly */ |
1b992147 LP |
1007 | if (_gid && i->gid_path && root_stat(i->gid_path, &st) >= 0) { |
1008 | gid = st.st_gid; | |
1009 | found_gid = true; | |
1010 | } | |
1011 | ||
3f316701 | 1012 | /* Then, try to get the UID directly */ |
1b992147 LP |
1013 | if ((_uid || (_gid && !found_gid)) |
1014 | && i->uid_path | |
1015 | && root_stat(i->uid_path, &st) >= 0) { | |
1016 | ||
1017 | uid = st.st_uid; | |
1018 | found_uid = true; | |
1019 | ||
3f316701 | 1020 | /* If we need the gid, but had no success yet, also derive it from the UID path */ |
1b992147 LP |
1021 | if (_gid && !found_gid) { |
1022 | gid = st.st_gid; | |
1023 | found_gid = true; | |
1024 | } | |
1025 | } | |
1026 | ||
3f316701 | 1027 | /* If that didn't work yet, then let's reuse the GID as UID */ |
1b992147 LP |
1028 | if (_uid && !found_uid && i->gid_path) { |
1029 | ||
1030 | if (found_gid) { | |
1031 | uid = (uid_t) gid; | |
1032 | found_uid = true; | |
1033 | } else if (root_stat(i->gid_path, &st) >= 0) { | |
1034 | uid = (uid_t) st.st_gid; | |
1035 | found_uid = true; | |
1036 | } | |
1037 | } | |
1038 | ||
1039 | if (_uid) { | |
1040 | if (!found_uid) | |
1041 | return 0; | |
1042 | ||
1043 | *_uid = uid; | |
1044 | } | |
1045 | ||
1046 | if (_gid) { | |
1047 | if (!found_gid) | |
1048 | return 0; | |
1049 | ||
1050 | *_gid = gid; | |
1051 | } | |
1052 | ||
1053 | return 1; | |
1054 | } | |
1055 | ||
1056 | static int add_user(Item *i) { | |
1057 | void *z; | |
1058 | int r; | |
1059 | ||
1060 | assert(i); | |
1061 | ||
1062 | /* Check the database directly */ | |
71da1673 | 1063 | z = hashmap_get(database_by_username, i->name); |
1b992147 LP |
1064 | if (z) { |
1065 | log_debug("User %s already exists.", i->name); | |
c1b6b04f | 1066 | i->uid = PTR_TO_UID(z); |
1b992147 LP |
1067 | i->uid_set = true; |
1068 | return 0; | |
1069 | } | |
1070 | ||
1071 | if (!arg_root) { | |
1072 | struct passwd *p; | |
1b992147 LP |
1073 | |
1074 | /* Also check NSS */ | |
1075 | errno = 0; | |
1076 | p = getpwnam(i->name); | |
1077 | if (p) { | |
1078 | log_debug("User %s already exists.", i->name); | |
1079 | i->uid = p->pw_uid; | |
1080 | i->uid_set = true; | |
1081 | ||
2fc09a9c DM |
1082 | r = free_and_strdup(&i->description, p->pw_gecos); |
1083 | if (r < 0) | |
1084 | return log_oom(); | |
1085 | ||
1b992147 LP |
1086 | return 0; |
1087 | } | |
08c7c321 | 1088 | if (!errno_is_not_exists(errno)) |
4a62c710 | 1089 | return log_error_errno(errno, "Failed to check if user %s already exists: %m", i->name); |
1b992147 LP |
1090 | } |
1091 | ||
3f316701 | 1092 | /* Try to use the suggested numeric UID */ |
1b992147 | 1093 | if (i->uid_set) { |
b9ee05c2 | 1094 | r = uid_is_ok(i->uid, i->name, !i->id_set_strict); |
f647962d | 1095 | if (r < 0) |
3f316701 | 1096 | return log_error_errno(r, "Failed to verify UID " UID_FMT ": %m", i->uid); |
1b992147 | 1097 | if (r == 0) { |
5374bc7c | 1098 | log_info("Suggested user ID " UID_FMT " for %s already used.", i->uid, i->name); |
1b992147 LP |
1099 | i->uid_set = false; |
1100 | } | |
1101 | } | |
1102 | ||
1103 | /* If that didn't work, try to read it from the specified path */ | |
1104 | if (!i->uid_set) { | |
1105 | uid_t c; | |
1106 | ||
1107 | if (read_id_from_file(i, &c, NULL) > 0) { | |
1108 | ||
8530dc44 | 1109 | if (c <= 0 || !uid_range_contains(uid_range, n_uid_range, c)) |
1b992147 LP |
1110 | log_debug("User ID " UID_FMT " of file not suitable for %s.", c, i->name); |
1111 | else { | |
b9ee05c2 | 1112 | r = uid_is_ok(c, i->name, true); |
f647962d | 1113 | if (r < 0) |
3f316701 | 1114 | return log_error_errno(r, "Failed to verify UID " UID_FMT ": %m", i->uid); |
f647962d | 1115 | else if (r > 0) { |
1b992147 LP |
1116 | i->uid = c; |
1117 | i->uid_set = true; | |
1118 | } else | |
1119 | log_debug("User ID " UID_FMT " of file for %s is already used.", c, i->name); | |
1120 | } | |
1121 | } | |
1122 | } | |
1123 | ||
b938cb90 | 1124 | /* Otherwise, try to reuse the group ID */ |
1b992147 | 1125 | if (!i->uid_set && i->gid_set) { |
b9ee05c2 | 1126 | r = uid_is_ok((uid_t) i->gid, i->name, true); |
f647962d | 1127 | if (r < 0) |
3f316701 | 1128 | return log_error_errno(r, "Failed to verify UID " UID_FMT ": %m", i->uid); |
1b992147 LP |
1129 | if (r > 0) { |
1130 | i->uid = (uid_t) i->gid; | |
1131 | i->uid_set = true; | |
1132 | } | |
1133 | } | |
1134 | ||
1135 | /* And if that didn't work either, let's try to find a free one */ | |
1136 | if (!i->uid_set) { | |
4b6f9b20 ZJS |
1137 | maybe_emit_login_defs_warning(); |
1138 | ||
8530dc44 LP |
1139 | for (;;) { |
1140 | r = uid_range_next_lower(uid_range, n_uid_range, &search_uid); | |
330d1def ZJS |
1141 | if (r < 0) |
1142 | return log_error_errno(r, "No free user ID available for %s.", i->name); | |
1b992147 | 1143 | |
b9ee05c2 | 1144 | r = uid_is_ok(search_uid, i->name, true); |
f647962d | 1145 | if (r < 0) |
3f316701 | 1146 | return log_error_errno(r, "Failed to verify UID " UID_FMT ": %m", i->uid); |
f647962d | 1147 | else if (r > 0) |
1b992147 LP |
1148 | break; |
1149 | } | |
1150 | ||
1b992147 LP |
1151 | i->uid_set = true; |
1152 | i->uid = search_uid; | |
1b992147 LP |
1153 | } |
1154 | ||
1dfb9321 SS |
1155 | r = ordered_hashmap_ensure_put(&todo_uids, NULL, UID_TO_PTR(i->uid), i); |
1156 | if (r == -EEXIST) | |
3f316701 | 1157 | return log_error_errno(r, "Requested user %s with UID " UID_FMT " and gid" GID_FMT " to be created is duplicated " |
1dfb9321 SS |
1158 | "or conflicts with another user.", i->name, i->uid, i->gid); |
1159 | if (r == -ENOMEM) | |
1b992147 | 1160 | return log_oom(); |
1b992147 | 1161 | if (r < 0) |
3f316701 | 1162 | return log_error_errno(r, "Failed to store user %s with UID " UID_FMT " and GID " GID_FMT " to be created: %m", |
1dfb9321 | 1163 | i->name, i->uid, i->gid); |
1b992147 | 1164 | |
c1b6b04f | 1165 | i->todo_user = true; |
9a5af4b7 | 1166 | log_info("Creating user '%s' (%s) with UID " UID_FMT " and GID " GID_FMT ".", |
62d1c93a | 1167 | i->name, strna(i->description), i->uid, i->gid); |
1b992147 LP |
1168 | |
1169 | return 0; | |
1170 | } | |
1171 | ||
1172 | static int gid_is_ok(gid_t gid) { | |
1173 | struct group *g; | |
1174 | struct passwd *p; | |
1175 | ||
5bc9c980 | 1176 | if (ordered_hashmap_get(todo_gids, GID_TO_PTR(gid))) |
1b992147 LP |
1177 | return 0; |
1178 | ||
1179 | /* Avoid reusing gids that are already used by a different user */ | |
5bc9c980 | 1180 | if (ordered_hashmap_get(todo_uids, UID_TO_PTR(gid))) |
1b992147 LP |
1181 | return 0; |
1182 | ||
71da1673 | 1183 | if (hashmap_contains(database_by_gid, GID_TO_PTR(gid))) |
1b992147 LP |
1184 | return 0; |
1185 | ||
71da1673 | 1186 | if (hashmap_contains(database_by_uid, UID_TO_PTR(gid))) |
1b992147 LP |
1187 | return 0; |
1188 | ||
1189 | if (!arg_root) { | |
1190 | errno = 0; | |
1191 | g = getgrgid(gid); | |
1192 | if (g) | |
1193 | return 0; | |
b0284aba | 1194 | if (!IN_SET(errno, 0, ENOENT)) |
1b992147 LP |
1195 | return -errno; |
1196 | ||
1197 | errno = 0; | |
1198 | p = getpwuid((uid_t) gid); | |
1199 | if (p) | |
1200 | return 0; | |
b0284aba | 1201 | if (!IN_SET(errno, 0, ENOENT)) |
1b992147 LP |
1202 | return -errno; |
1203 | } | |
1204 | ||
1205 | return 1; | |
1206 | } | |
1207 | ||
649916d3 | 1208 | static int get_gid_by_name(const char *name, gid_t *gid) { |
1b992147 | 1209 | void *z; |
1b992147 | 1210 | |
649916d3 | 1211 | assert(gid); |
1b992147 LP |
1212 | |
1213 | /* Check the database directly */ | |
649916d3 | 1214 | z = hashmap_get(database_by_groupname, name); |
1b992147 | 1215 | if (z) { |
649916d3 | 1216 | *gid = PTR_TO_GID(z); |
1b992147 LP |
1217 | return 0; |
1218 | } | |
1219 | ||
1220 | /* Also check NSS */ | |
1221 | if (!arg_root) { | |
1222 | struct group *g; | |
1223 | ||
1224 | errno = 0; | |
649916d3 | 1225 | g = getgrnam(name); |
1b992147 | 1226 | if (g) { |
649916d3 | 1227 | *gid = g->gr_gid; |
1b992147 LP |
1228 | return 0; |
1229 | } | |
08c7c321 | 1230 | if (!errno_is_not_exists(errno)) |
649916d3 DM |
1231 | return log_error_errno(errno, "Failed to check if group %s already exists: %m", name); |
1232 | } | |
1233 | ||
1234 | return -ENOENT; | |
1235 | } | |
1236 | ||
1237 | static int add_group(Item *i) { | |
1238 | int r; | |
1239 | ||
1240 | assert(i); | |
1241 | ||
1242 | r = get_gid_by_name(i->name, &i->gid); | |
1243 | if (r != -ENOENT) { | |
1244 | if (r < 0) | |
1245 | return r; | |
1246 | log_debug("Group %s already exists.", i->name); | |
1247 | i->gid_set = true; | |
1248 | return 0; | |
1b992147 LP |
1249 | } |
1250 | ||
3f316701 | 1251 | /* Try to use the suggested numeric GID */ |
1b992147 LP |
1252 | if (i->gid_set) { |
1253 | r = gid_is_ok(i->gid); | |
f647962d | 1254 | if (r < 0) |
3f316701 | 1255 | return log_error_errno(r, "Failed to verify GID " GID_FMT ": %m", i->gid); |
b9ee05c2 | 1256 | if (i->id_set_strict) { |
3f316701 ZJS |
1257 | /* If we require the GID to already exist we can return here: |
1258 | * r > 0: means the GID does not exist -> fail | |
1259 | * r == 0: means the GID exists -> nothing more to do. | |
28e7fad7 | 1260 | */ |
baaa35ad ZJS |
1261 | if (r > 0) |
1262 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1263 | "Failed to create %s: please create GID %d", | |
1264 | i->name, i->gid); | |
28e7fad7 MV |
1265 | if (r == 0) |
1266 | return 0; | |
1267 | } | |
1b992147 | 1268 | if (r == 0) { |
5374bc7c | 1269 | log_info("Suggested group ID " GID_FMT " for %s already used.", i->gid, i->name); |
1b992147 LP |
1270 | i->gid_set = false; |
1271 | } | |
1272 | } | |
1273 | ||
1274 | /* Try to reuse the numeric uid, if there's one */ | |
1275 | if (!i->gid_set && i->uid_set) { | |
1276 | r = gid_is_ok((gid_t) i->uid); | |
f647962d | 1277 | if (r < 0) |
3f316701 | 1278 | return log_error_errno(r, "Failed to verify GID " GID_FMT ": %m", i->gid); |
1b992147 LP |
1279 | if (r > 0) { |
1280 | i->gid = (gid_t) i->uid; | |
1281 | i->gid_set = true; | |
1282 | } | |
1283 | } | |
1284 | ||
1285 | /* If that didn't work, try to read it from the specified path */ | |
1286 | if (!i->gid_set) { | |
1287 | gid_t c; | |
1288 | ||
1289 | if (read_id_from_file(i, NULL, &c) > 0) { | |
1290 | ||
8530dc44 | 1291 | if (c <= 0 || !uid_range_contains(uid_range, n_uid_range, c)) |
1b992147 LP |
1292 | log_debug("Group ID " GID_FMT " of file not suitable for %s.", c, i->name); |
1293 | else { | |
1294 | r = gid_is_ok(c); | |
f647962d | 1295 | if (r < 0) |
3f316701 | 1296 | return log_error_errno(r, "Failed to verify GID " GID_FMT ": %m", i->gid); |
f647962d | 1297 | else if (r > 0) { |
1b992147 LP |
1298 | i->gid = c; |
1299 | i->gid_set = true; | |
1300 | } else | |
1301 | log_debug("Group ID " GID_FMT " of file for %s already used.", c, i->name); | |
1302 | } | |
1303 | } | |
1304 | } | |
1305 | ||
1306 | /* And if that didn't work either, let's try to find a free one */ | |
1307 | if (!i->gid_set) { | |
4b6f9b20 ZJS |
1308 | maybe_emit_login_defs_warning(); |
1309 | ||
8530dc44 LP |
1310 | for (;;) { |
1311 | /* We look for new GIDs in the UID pool! */ | |
1312 | r = uid_range_next_lower(uid_range, n_uid_range, &search_uid); | |
330d1def ZJS |
1313 | if (r < 0) |
1314 | return log_error_errno(r, "No free group ID available for %s.", i->name); | |
8530dc44 LP |
1315 | |
1316 | r = gid_is_ok(search_uid); | |
f647962d | 1317 | if (r < 0) |
3f316701 | 1318 | return log_error_errno(r, "Failed to verify GID " GID_FMT ": %m", i->gid); |
f647962d | 1319 | else if (r > 0) |
1b992147 LP |
1320 | break; |
1321 | } | |
1322 | ||
1b992147 | 1323 | i->gid_set = true; |
8530dc44 | 1324 | i->gid = search_uid; |
1b992147 LP |
1325 | } |
1326 | ||
1dfb9321 SS |
1327 | r = ordered_hashmap_ensure_put(&todo_gids, NULL, GID_TO_PTR(i->gid), i); |
1328 | if (r == -EEXIST) | |
3f316701 | 1329 | 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 | 1330 | if (r == -ENOMEM) |
1b992147 | 1331 | return log_oom(); |
1b992147 | 1332 | if (r < 0) |
3f316701 | 1333 | return log_error_errno(r, "Failed to store group %s with GID " GID_FMT " to be created: %m", i->name, i->gid); |
1b992147 | 1334 | |
c1b6b04f | 1335 | i->todo_group = true; |
9a5af4b7 | 1336 | log_info("Creating group '%s' with GID " GID_FMT ".", i->name, i->gid); |
1b992147 LP |
1337 | |
1338 | return 0; | |
1339 | } | |
1340 | ||
1341 | static int process_item(Item *i) { | |
1342 | int r; | |
1343 | ||
1344 | assert(i); | |
1345 | ||
1346 | switch (i->type) { | |
1347 | ||
b5327d0a YW |
1348 | case ADD_USER: { |
1349 | Item *j; | |
1350 | ||
649916d3 | 1351 | j = ordered_hashmap_get(groups, i->group_name ?: i->name); |
b5327d0a | 1352 | if (j && j->todo_group) { |
649916d3 | 1353 | /* When a group with the target name is already in queue, |
b5327d0a YW |
1354 | * use the information about the group and do not create |
1355 | * duplicated group entry. */ | |
1356 | i->gid_set = j->gid_set; | |
1357 | i->gid = j->gid; | |
1358 | i->id_set_strict = true; | |
649916d3 DM |
1359 | } else if (i->group_name) { |
1360 | /* When a group name was given instead of a GID and it's | |
1361 | * not in queue, then it must already exist. */ | |
1362 | r = get_gid_by_name(i->group_name, &i->gid); | |
1363 | if (r < 0) | |
1364 | return log_error_errno(r, "Group %s not found.", i->group_name); | |
1365 | i->gid_set = true; | |
1366 | i->id_set_strict = true; | |
b5327d0a YW |
1367 | } else { |
1368 | r = add_group(i); | |
1369 | if (r < 0) | |
1370 | return r; | |
1371 | } | |
1b992147 LP |
1372 | |
1373 | return add_user(i); | |
b5327d0a | 1374 | } |
1b992147 | 1375 | |
e2c2060f | 1376 | case ADD_GROUP: |
1b992147 | 1377 | return add_group(i); |
1b992147 | 1378 | |
a12b0cc3 | 1379 | default: |
04499a70 | 1380 | assert_not_reached(); |
a12b0cc3 | 1381 | } |
1b992147 LP |
1382 | } |
1383 | ||
71da1673 | 1384 | static Item* item_free(Item *i) { |
1b992147 | 1385 | if (!i) |
71da1673 | 1386 | return NULL; |
1b992147 LP |
1387 | |
1388 | free(i->name); | |
649916d3 | 1389 | free(i->group_name); |
1b992147 LP |
1390 | free(i->uid_path); |
1391 | free(i->gid_path); | |
1392 | free(i->description); | |
d9b8ea54 | 1393 | free(i->home); |
7b1aaf66 | 1394 | free(i->shell); |
71da1673 | 1395 | return mfree(i); |
1b992147 LP |
1396 | } |
1397 | ||
1398 | DEFINE_TRIVIAL_CLEANUP_FUNC(Item*, item_free); | |
71da1673 | 1399 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(item_hash_ops, char, string_hash_func, string_compare_func, Item, item_free); |
1b992147 | 1400 | |
a12b0cc3 LP |
1401 | static int add_implicit(void) { |
1402 | char *g, **l; | |
a12b0cc3 LP |
1403 | int r; |
1404 | ||
1405 | /* Implicitly create additional users and groups, if they were listed in "m" lines */ | |
90e74a66 | 1406 | ORDERED_HASHMAP_FOREACH_KEY(l, g, members) { |
d4f0412d YW |
1407 | STRV_FOREACH(m, l) |
1408 | if (!ordered_hashmap_get(users, *m)) { | |
a12b0cc3 LP |
1409 | _cleanup_(item_freep) Item *j = NULL; |
1410 | ||
a12b0cc3 LP |
1411 | j = new0(Item, 1); |
1412 | if (!j) | |
1413 | return log_oom(); | |
1414 | ||
1415 | j->type = ADD_USER; | |
1416 | j->name = strdup(*m); | |
1417 | if (!j->name) | |
1418 | return log_oom(); | |
1419 | ||
f334deba SS |
1420 | r = ordered_hashmap_ensure_put(&users, &item_hash_ops, j->name, j); |
1421 | if (r == -ENOMEM) | |
a12b0cc3 | 1422 | return log_oom(); |
f334deba SS |
1423 | if (r < 0) |
1424 | return log_error_errno(r, "Failed to add implicit user '%s': %m", j->name); | |
a12b0cc3 LP |
1425 | |
1426 | log_debug("Adding implicit user '%s' due to m line", j->name); | |
f334deba | 1427 | TAKE_PTR(j); |
a12b0cc3 | 1428 | } |
d4f0412d YW |
1429 | |
1430 | if (!(ordered_hashmap_get(users, g) || | |
1431 | ordered_hashmap_get(groups, g))) { | |
1432 | _cleanup_(item_freep) Item *j = NULL; | |
1433 | ||
d4f0412d YW |
1434 | j = new0(Item, 1); |
1435 | if (!j) | |
1436 | return log_oom(); | |
1437 | ||
1438 | j->type = ADD_GROUP; | |
1439 | j->name = strdup(g); | |
1440 | if (!j->name) | |
1441 | return log_oom(); | |
1442 | ||
f334deba SS |
1443 | r = ordered_hashmap_ensure_put(&groups, &item_hash_ops, j->name, j); |
1444 | if (r == -ENOMEM) | |
d4f0412d | 1445 | return log_oom(); |
f334deba SS |
1446 | if (r < 0) |
1447 | return log_error_errno(r, "Failed to add implicit group '%s': %m", j->name); | |
d4f0412d YW |
1448 | |
1449 | log_debug("Adding implicit group '%s' due to m line", j->name); | |
f334deba | 1450 | TAKE_PTR(j); |
a12b0cc3 LP |
1451 | } |
1452 | } | |
1453 | ||
1454 | return 0; | |
1455 | } | |
1456 | ||
1b992147 LP |
1457 | static bool item_equal(Item *a, Item *b) { |
1458 | assert(a); | |
1459 | assert(b); | |
1460 | ||
1461 | if (a->type != b->type) | |
1462 | return false; | |
1463 | ||
1464 | if (!streq_ptr(a->name, b->name)) | |
1465 | return false; | |
1466 | ||
1467 | if (!streq_ptr(a->uid_path, b->uid_path)) | |
1468 | return false; | |
1469 | ||
1470 | if (!streq_ptr(a->gid_path, b->gid_path)) | |
1471 | return false; | |
1472 | ||
1473 | if (!streq_ptr(a->description, b->description)) | |
1474 | return false; | |
1475 | ||
1476 | if (a->uid_set != b->uid_set) | |
1477 | return false; | |
1478 | ||
1479 | if (a->uid_set && a->uid != b->uid) | |
1480 | return false; | |
1481 | ||
1482 | if (a->gid_set != b->gid_set) | |
1483 | return false; | |
1484 | ||
1485 | if (a->gid_set && a->gid != b->gid) | |
1486 | return false; | |
1487 | ||
7629889c LP |
1488 | if (!streq_ptr(a->home, b->home)) |
1489 | return false; | |
1490 | ||
7b1aaf66 ZJS |
1491 | if (!streq_ptr(a->shell, b->shell)) |
1492 | return false; | |
1493 | ||
1b992147 LP |
1494 | return true; |
1495 | } | |
1496 | ||
1b992147 | 1497 | static int parse_line(const char *fname, unsigned line, const char *buffer) { |
7b1aaf66 ZJS |
1498 | _cleanup_free_ char *action = NULL, |
1499 | *name = NULL, *resolved_name = NULL, | |
1500 | *id = NULL, *resolved_id = NULL, | |
b8bed700 YW |
1501 | *description = NULL, *resolved_description = NULL, |
1502 | *home = NULL, *resolved_home = NULL, | |
71fb1588 | 1503 | *shell = NULL, *resolved_shell = NULL; |
1b992147 LP |
1504 | _cleanup_(item_freep) Item *i = NULL; |
1505 | Item *existing; | |
5bc9c980 | 1506 | OrderedHashmap *h; |
7629889c LP |
1507 | int r; |
1508 | const char *p; | |
1b992147 LP |
1509 | |
1510 | assert(fname); | |
1511 | assert(line >= 1); | |
1512 | assert(buffer); | |
1513 | ||
7629889c LP |
1514 | /* Parse columns */ |
1515 | p = buffer; | |
4ec85141 | 1516 | r = extract_many_words(&p, NULL, EXTRACT_UNQUOTE, |
7b1aaf66 | 1517 | &action, &name, &id, &description, &home, &shell, NULL); |
330d1def ZJS |
1518 | if (r < 0) |
1519 | return log_error_errno(r, "[%s:%u] Syntax error.", fname, line); | |
1520 | if (r < 2) | |
1521 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1522 | "[%s:%u] Missing action and name columns.", fname, line); | |
1523 | if (!isempty(p)) | |
1524 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1525 | "[%s:%u] Trailing garbage.", fname, line); | |
1b992147 | 1526 | |
7629889c | 1527 | /* Verify action */ |
330d1def ZJS |
1528 | if (strlen(action) != 1) |
1529 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1530 | "[%s:%u] Unknown modifier '%s'", fname, line, action); | |
1b992147 | 1531 | |
330d1def ZJS |
1532 | if (!IN_SET(action[0], ADD_USER, ADD_GROUP, ADD_MEMBER, ADD_RANGE)) |
1533 | return log_error_errno(SYNTHETIC_ERRNO(EBADMSG), | |
1534 | "[%s:%u] Unknown command type '%c'.", fname, line, action[0]); | |
1b992147 | 1535 | |
7629889c | 1536 | /* Verify name */ |
e7b88b7b | 1537 | if (empty_or_dash(name)) |
97b11eed | 1538 | name = mfree(name); |
1b992147 | 1539 | |
8530dc44 | 1540 | if (name) { |
de61a04b | 1541 | r = specifier_printf(name, NAME_MAX, system_and_tmp_specifier_table, arg_root, NULL, &resolved_name); |
330d1def | 1542 | if (r < 0) |
0f7e4b28 | 1543 | return log_error_errno(r, "[%s:%u] Failed to replace specifiers in '%s': %m", fname, line, name); |
8530dc44 | 1544 | |
7a8867ab | 1545 | if (!valid_user_group_name(resolved_name, 0)) |
330d1def ZJS |
1546 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
1547 | "[%s:%u] '%s' is not a valid user or group name.", | |
1548 | fname, line, resolved_name); | |
1b992147 LP |
1549 | } |
1550 | ||
8530dc44 | 1551 | /* Verify id */ |
e7b88b7b | 1552 | if (empty_or_dash(id)) |
97b11eed | 1553 | id = mfree(id); |
7629889c | 1554 | |
8530dc44 | 1555 | if (id) { |
de61a04b | 1556 | r = specifier_printf(id, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_id); |
330d1def | 1557 | if (r < 0) |
0f7e4b28 | 1558 | return log_error_errno(r, "[%s:%u] Failed to replace specifiers in '%s': %m", |
330d1def | 1559 | fname, line, name); |
8530dc44 LP |
1560 | } |
1561 | ||
1562 | /* Verify description */ | |
e7b88b7b | 1563 | if (empty_or_dash(description)) |
97b11eed | 1564 | description = mfree(description); |
1b992147 | 1565 | |
8530dc44 | 1566 | if (description) { |
de61a04b | 1567 | r = specifier_printf(description, LONG_LINE_MAX, system_and_tmp_specifier_table, arg_root, NULL, &resolved_description); |
330d1def | 1568 | if (r < 0) |
0f7e4b28 | 1569 | return log_error_errno(r, "[%s:%u] Failed to replace specifiers in '%s': %m", |
330d1def | 1570 | fname, line, description); |
b8bed700 | 1571 | |
330d1def ZJS |
1572 | if (!valid_gecos(resolved_description)) |
1573 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1574 | "[%s:%u] '%s' is not a valid GECOS field.", | |
1575 | fname, line, resolved_description); | |
8530dc44 LP |
1576 | } |
1577 | ||
1578 | /* Verify home */ | |
e7b88b7b | 1579 | if (empty_or_dash(home)) |
97b11eed | 1580 | home = mfree(home); |
1b992147 | 1581 | |
8530dc44 | 1582 | if (home) { |
de61a04b | 1583 | r = specifier_printf(home, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_home); |
330d1def | 1584 | if (r < 0) |
0f7e4b28 | 1585 | return log_error_errno(r, "[%s:%u] Failed to replace specifiers in '%s': %m", |
330d1def | 1586 | fname, line, home); |
b8bed700 | 1587 | |
330d1def ZJS |
1588 | if (!valid_home(resolved_home)) |
1589 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1590 | "[%s:%u] '%s' is not a valid home directory field.", | |
1591 | fname, line, resolved_home); | |
8530dc44 LP |
1592 | } |
1593 | ||
7b1aaf66 | 1594 | /* Verify shell */ |
e7b88b7b | 1595 | if (empty_or_dash(shell)) |
7b1aaf66 ZJS |
1596 | shell = mfree(shell); |
1597 | ||
1598 | if (shell) { | |
de61a04b | 1599 | r = specifier_printf(shell, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_shell); |
330d1def | 1600 | if (r < 0) |
0f7e4b28 | 1601 | return log_error_errno(r, "[%s:%u] Failed to replace specifiers in '%s': %m", |
330d1def | 1602 | fname, line, shell); |
7b1aaf66 | 1603 | |
330d1def ZJS |
1604 | if (!valid_shell(resolved_shell)) |
1605 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1606 | "[%s:%u] '%s' is not a valid login shell field.", | |
1607 | fname, line, resolved_shell); | |
7b1aaf66 ZJS |
1608 | } |
1609 | ||
a12b0cc3 | 1610 | switch (action[0]) { |
1b992147 | 1611 | |
8530dc44 | 1612 | case ADD_RANGE: |
330d1def ZJS |
1613 | if (resolved_name) |
1614 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1615 | "[%s:%u] Lines of type 'r' don't take a name field.", | |
1616 | fname, line); | |
1617 | ||
1618 | if (!resolved_id) | |
1619 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
387f6955 | 1620 | "[%s:%u] Lines of type 'r' require an ID range in the third field.", |
330d1def ZJS |
1621 | fname, line); |
1622 | ||
1623 | if (description || home || shell) | |
1624 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1625 | "[%s:%u] Lines of type '%c' don't take a %s field.", | |
1626 | fname, line, action[0], | |
1627 | description ? "GECOS" : home ? "home directory" : "login shell"); | |
7629889c | 1628 | |
8530dc44 | 1629 | r = uid_range_add_str(&uid_range, &n_uid_range, resolved_id); |
330d1def ZJS |
1630 | if (r < 0) |
1631 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1632 | "[%s:%u] Invalid UID range %s.", fname, line, resolved_id); | |
1b992147 | 1633 | |
8530dc44 LP |
1634 | return 0; |
1635 | ||
1636 | case ADD_MEMBER: { | |
8530dc44 | 1637 | /* Try to extend an existing member or group item */ |
330d1def ZJS |
1638 | if (!name) |
1639 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1640 | "[%s:%u] Lines of type 'm' require a user name in the second field.", | |
1641 | fname, line); | |
1642 | ||
1643 | if (!resolved_id) | |
1644 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1645 | "[%s:%u] Lines of type 'm' require a group name in the third field.", | |
1646 | fname, line); | |
1647 | ||
7a8867ab | 1648 | if (!valid_user_group_name(resolved_id, 0)) |
330d1def ZJS |
1649 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
1650 | "[%s:%u] '%s' is not a valid user or group name.", | |
1651 | fname, line, resolved_id); | |
1652 | ||
1653 | if (description || home || shell) | |
1654 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1655 | "[%s:%u] Lines of type '%c' don't take a %s field.", | |
1656 | fname, line, action[0], | |
1657 | description ? "GECOS" : home ? "home directory" : "login shell"); | |
8530dc44 | 1658 | |
cde79109 | 1659 | r = string_strv_ordered_hashmap_put(&members, resolved_id, resolved_name); |
7629889c | 1660 | if (r < 0) |
cde79109 | 1661 | return log_error_errno(r, "Failed to store mapping for %s: %m", resolved_id); |
a12b0cc3 LP |
1662 | |
1663 | return 0; | |
1b992147 LP |
1664 | } |
1665 | ||
a12b0cc3 | 1666 | case ADD_USER: |
330d1def ZJS |
1667 | if (!name) |
1668 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1669 | "[%s:%u] Lines of type 'u' require a user name in the second field.", | |
1670 | fname, line); | |
8530dc44 | 1671 | |
71da1673 | 1672 | r = ordered_hashmap_ensure_allocated(&users, &item_hash_ops); |
a12b0cc3 LP |
1673 | if (r < 0) |
1674 | return log_oom(); | |
1675 | ||
1676 | i = new0(Item, 1); | |
1677 | if (!i) | |
1678 | return log_oom(); | |
1679 | ||
8530dc44 LP |
1680 | if (resolved_id) { |
1681 | if (path_is_absolute(resolved_id)) { | |
1cc6c93a | 1682 | i->uid_path = TAKE_PTR(resolved_id); |
4ff361cc | 1683 | path_simplify(i->uid_path); |
a12b0cc3 | 1684 | } else { |
4cb41413 MV |
1685 | _cleanup_free_ char *uid = NULL, *gid = NULL; |
1686 | if (split_pair(resolved_id, ":", &uid, &gid) == 0) { | |
1687 | r = parse_gid(gid, &i->gid); | |
649916d3 | 1688 | if (r < 0) { |
7a8867ab | 1689 | if (valid_user_group_name(gid, 0)) |
649916d3 DM |
1690 | i->group_name = TAKE_PTR(gid); |
1691 | else | |
1692 | return log_error_errno(r, "Failed to parse GID: '%s': %m", id); | |
1693 | } else { | |
1694 | i->gid_set = true; | |
1695 | i->id_set_strict = true; | |
1696 | } | |
4cb41413 | 1697 | free_and_replace(resolved_id, uid); |
a12b0cc3 | 1698 | } |
1825c909 MV |
1699 | if (!streq(resolved_id, "-")) { |
1700 | r = parse_uid(resolved_id, &i->uid); | |
1701 | if (r < 0) | |
1702 | return log_error_errno(r, "Failed to parse UID: '%s': %m", id); | |
1703 | i->uid_set = true; | |
1704 | } | |
a12b0cc3 LP |
1705 | } |
1706 | } | |
1707 | ||
b8bed700 YW |
1708 | i->description = TAKE_PTR(resolved_description); |
1709 | i->home = TAKE_PTR(resolved_home); | |
1cc6c93a | 1710 | i->shell = TAKE_PTR(resolved_shell); |
7b1aaf66 | 1711 | |
1b992147 | 1712 | h = users; |
a12b0cc3 LP |
1713 | break; |
1714 | ||
1715 | case ADD_GROUP: | |
330d1def ZJS |
1716 | if (!name) |
1717 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1718 | "[%s:%u] Lines of type 'g' require a user name in the second field.", | |
1719 | fname, line); | |
a12b0cc3 | 1720 | |
330d1def ZJS |
1721 | if (description || home || shell) |
1722 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1723 | "[%s:%u] Lines of type '%c' don't take a %s field.", | |
1724 | fname, line, action[0], | |
1725 | description ? "GECOS" : home ? "home directory" : "login shell"); | |
7629889c | 1726 | |
71da1673 | 1727 | r = ordered_hashmap_ensure_allocated(&groups, &item_hash_ops); |
7629889c LP |
1728 | if (r < 0) |
1729 | return log_oom(); | |
1730 | ||
a12b0cc3 LP |
1731 | i = new0(Item, 1); |
1732 | if (!i) | |
1733 | return log_oom(); | |
1734 | ||
8530dc44 LP |
1735 | if (resolved_id) { |
1736 | if (path_is_absolute(resolved_id)) { | |
1cc6c93a | 1737 | i->gid_path = TAKE_PTR(resolved_id); |
4ff361cc | 1738 | path_simplify(i->gid_path); |
a12b0cc3 | 1739 | } else { |
8530dc44 | 1740 | r = parse_gid(resolved_id, &i->gid); |
4cb41413 MV |
1741 | if (r < 0) |
1742 | return log_error_errno(r, "Failed to parse GID: '%s': %m", id); | |
a12b0cc3 LP |
1743 | |
1744 | i->gid_set = true; | |
1745 | } | |
1746 | } | |
1747 | ||
1b992147 | 1748 | h = groups; |
a12b0cc3 | 1749 | break; |
8530dc44 | 1750 | |
bce415ed RC |
1751 | default: |
1752 | return -EBADMSG; | |
1b992147 | 1753 | } |
a12b0cc3 LP |
1754 | |
1755 | i->type = action[0]; | |
1cc6c93a | 1756 | i->name = TAKE_PTR(resolved_name); |
1b992147 | 1757 | |
5bc9c980 | 1758 | existing = ordered_hashmap_get(h, i->name); |
1b992147 | 1759 | if (existing) { |
1b992147 LP |
1760 | /* Two identical items are fine */ |
1761 | if (!item_equal(existing, i)) | |
9a5af4b7 ZJS |
1762 | log_warning("%s:%u: conflict with earlier configuration for %s '%s', ignoring line.", |
1763 | fname, line, | |
1764 | item_type_to_string(i->type), i->name); | |
1b992147 LP |
1765 | |
1766 | return 0; | |
1767 | } | |
1768 | ||
5bc9c980 | 1769 | r = ordered_hashmap_put(h, i->name, i); |
a12b0cc3 LP |
1770 | if (r < 0) |
1771 | return log_oom(); | |
1b992147 LP |
1772 | |
1773 | i = NULL; | |
1774 | return 0; | |
1775 | } | |
1776 | ||
1777 | static int read_config_file(const char *fn, bool ignore_enoent) { | |
dfc87cbf | 1778 | _cleanup_fclose_ FILE *rf = NULL; |
2708160c | 1779 | _cleanup_free_ char *pp = NULL; |
dfc87cbf | 1780 | FILE *f = NULL; |
1b992147 | 1781 | unsigned v = 0; |
c4640902 | 1782 | int r = 0; |
1b992147 LP |
1783 | |
1784 | assert(fn); | |
1785 | ||
dfc87cbf LP |
1786 | if (streq(fn, "-")) |
1787 | f = stdin; | |
1788 | else { | |
2708160c | 1789 | r = search_and_fopen(fn, "re", arg_root, (const char**) CONF_PATHS_STRV("sysusers.d"), &rf, &pp); |
dfc87cbf LP |
1790 | if (r < 0) { |
1791 | if (ignore_enoent && r == -ENOENT) | |
1792 | return 0; | |
1b992147 | 1793 | |
8d3d7072 | 1794 | return log_error_errno(r, "Failed to open '%s', ignoring: %m", fn); |
dfc87cbf LP |
1795 | } |
1796 | ||
1797 | f = rf; | |
2708160c | 1798 | fn = pp; |
1b992147 LP |
1799 | } |
1800 | ||
050ca299 LP |
1801 | for (;;) { |
1802 | _cleanup_free_ char *line = NULL; | |
1b992147 LP |
1803 | char *l; |
1804 | int k; | |
1805 | ||
050ca299 LP |
1806 | k = read_line(f, LONG_LINE_MAX, &line); |
1807 | if (k < 0) | |
1808 | return log_error_errno(k, "Failed to read '%s': %m", fn); | |
1809 | if (k == 0) | |
1810 | break; | |
1811 | ||
1b992147 LP |
1812 | v++; |
1813 | ||
1814 | l = strstrip(line); | |
4c701096 | 1815 | if (IN_SET(*l, 0, '#')) |
1b992147 LP |
1816 | continue; |
1817 | ||
1818 | k = parse_line(fn, v, l); | |
1819 | if (k < 0 && r == 0) | |
1820 | r = k; | |
1821 | } | |
1822 | ||
1823 | if (ferror(f)) { | |
56f64d95 | 1824 | log_error_errno(errno, "Failed to read from file %s: %m", fn); |
1b992147 LP |
1825 | if (r == 0) |
1826 | r = -EIO; | |
1827 | } | |
1828 | ||
1829 | return r; | |
1830 | } | |
1831 | ||
ec0327d6 ZJS |
1832 | static int cat_config(void) { |
1833 | _cleanup_strv_free_ char **files = NULL; | |
ec0327d6 ZJS |
1834 | int r; |
1835 | ||
a826d4f7 | 1836 | r = conf_files_list_with_replacement(arg_root, CONF_PATHS_STRV("sysusers.d"), arg_replace, &files, NULL); |
ec0327d6 ZJS |
1837 | if (r < 0) |
1838 | return r; | |
1839 | ||
384c2c32 | 1840 | pager_open(arg_pager_flags); |
dcd5c891 | 1841 | |
ec0327d6 ZJS |
1842 | return cat_files(NULL, files, 0); |
1843 | } | |
1844 | ||
37ec0fdd LP |
1845 | static int help(void) { |
1846 | _cleanup_free_ char *link = NULL; | |
1847 | int r; | |
1848 | ||
1849 | r = terminal_urlify_man("systemd-sysusers.service", "8", &link); | |
1850 | if (r < 0) | |
1851 | return log_oom(); | |
1852 | ||
1b992147 LP |
1853 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" |
1854 | "Creates system user accounts.\n\n" | |
1855 | " -h --help Show this help\n" | |
1856 | " --version Show package version\n" | |
ec0327d6 | 1857 | " --cat-config Show configuration files\n" |
601185b4 | 1858 | " --root=PATH Operate on an alternate filesystem root\n" |
0c3ee127 | 1859 | " --image=PATH Operate on disk image as filesystem root\n" |
d16a1c1b | 1860 | " --replace=PATH Treat arguments as replacement for PATH\n" |
64fe1095 | 1861 | " --dry-run Just print what would be done\n" |
1b600bd5 | 1862 | " --inline Treat arguments as configuration lines\n" |
dcd5c891 | 1863 | " --no-pager Do not pipe output into a pager\n" |
bc556335 DDM |
1864 | "\nSee the %s for details.\n", |
1865 | program_invocation_short_name, | |
1866 | link); | |
37ec0fdd LP |
1867 | |
1868 | return 0; | |
1b992147 LP |
1869 | } |
1870 | ||
1871 | static int parse_argv(int argc, char *argv[]) { | |
1872 | ||
1873 | enum { | |
1874 | ARG_VERSION = 0x100, | |
ec0327d6 | 1875 | ARG_CAT_CONFIG, |
1b992147 | 1876 | ARG_ROOT, |
0c3ee127 | 1877 | ARG_IMAGE, |
d16a1c1b | 1878 | ARG_REPLACE, |
64fe1095 | 1879 | ARG_DRY_RUN, |
1b600bd5 | 1880 | ARG_INLINE, |
dcd5c891 | 1881 | ARG_NO_PAGER, |
1b992147 LP |
1882 | }; |
1883 | ||
1884 | static const struct option options[] = { | |
ec0327d6 ZJS |
1885 | { "help", no_argument, NULL, 'h' }, |
1886 | { "version", no_argument, NULL, ARG_VERSION }, | |
1887 | { "cat-config", no_argument, NULL, ARG_CAT_CONFIG }, | |
1888 | { "root", required_argument, NULL, ARG_ROOT }, | |
64fe1095 | 1889 | { "image", required_argument, NULL, ARG_IMAGE }, |
ec0327d6 | 1890 | { "replace", required_argument, NULL, ARG_REPLACE }, |
64fe1095 | 1891 | { "dry-run", no_argument, NULL, ARG_DRY_RUN }, |
ec0327d6 | 1892 | { "inline", no_argument, NULL, ARG_INLINE }, |
dcd5c891 | 1893 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, |
1b992147 LP |
1894 | {} |
1895 | }; | |
1896 | ||
0f474365 | 1897 | int c, r; |
1b992147 LP |
1898 | |
1899 | assert(argc >= 0); | |
1900 | assert(argv); | |
1901 | ||
601185b4 | 1902 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) |
1b992147 LP |
1903 | |
1904 | switch (c) { | |
1905 | ||
1906 | case 'h': | |
37ec0fdd | 1907 | return help(); |
1b992147 LP |
1908 | |
1909 | case ARG_VERSION: | |
3f6fd1ba | 1910 | return version(); |
1b992147 | 1911 | |
ec0327d6 ZJS |
1912 | case ARG_CAT_CONFIG: |
1913 | arg_cat_config = true; | |
1914 | break; | |
1915 | ||
1b992147 | 1916 | case ARG_ROOT: |
614b022c | 1917 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_root); |
0f474365 | 1918 | if (r < 0) |
0f03c2a4 | 1919 | return r; |
1b992147 LP |
1920 | break; |
1921 | ||
0c3ee127 | 1922 | case ARG_IMAGE: |
3537577c ZJS |
1923 | #ifdef STANDALONE |
1924 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
1925 | "This systemd-sysusers version is compiled without support for --image=."); | |
1926 | #else | |
614b022c | 1927 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image); |
0c3ee127 LP |
1928 | if (r < 0) |
1929 | return r; | |
1930 | break; | |
3537577c | 1931 | #endif |
0c3ee127 | 1932 | |
d16a1c1b ZJS |
1933 | case ARG_REPLACE: |
1934 | if (!path_is_absolute(optarg) || | |
baaa35ad ZJS |
1935 | !endswith(optarg, ".conf")) |
1936 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1937 | "The argument to --replace= must an absolute path to a config file"); | |
d16a1c1b ZJS |
1938 | |
1939 | arg_replace = optarg; | |
1940 | break; | |
1941 | ||
64fe1095 ZJS |
1942 | case ARG_DRY_RUN: |
1943 | arg_dry_run = true; | |
1944 | break; | |
1945 | ||
1b600bd5 ZJS |
1946 | case ARG_INLINE: |
1947 | arg_inline = true; | |
1948 | break; | |
1949 | ||
dcd5c891 | 1950 | case ARG_NO_PAGER: |
0221d68a | 1951 | arg_pager_flags |= PAGER_DISABLE; |
dcd5c891 LP |
1952 | break; |
1953 | ||
1b992147 LP |
1954 | case '?': |
1955 | return -EINVAL; | |
1956 | ||
1957 | default: | |
04499a70 | 1958 | assert_not_reached(); |
1b992147 | 1959 | } |
1b992147 | 1960 | |
baaa35ad ZJS |
1961 | if (arg_replace && arg_cat_config) |
1962 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1963 | "Option --replace= is not supported with --cat-config"); | |
ec0327d6 | 1964 | |
baaa35ad ZJS |
1965 | if (arg_replace && optind >= argc) |
1966 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1967 | "When --replace= is given, some configuration items must be specified"); | |
d16a1c1b | 1968 | |
0c3ee127 LP |
1969 | if (arg_image && arg_root) |
1970 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported."); | |
1971 | ||
1b992147 LP |
1972 | return 1; |
1973 | } | |
1974 | ||
d16a1c1b | 1975 | static int parse_arguments(char **args) { |
d16a1c1b ZJS |
1976 | unsigned pos = 1; |
1977 | int r; | |
1978 | ||
1979 | STRV_FOREACH(arg, args) { | |
1980 | if (arg_inline) | |
1981 | /* Use (argument):n, where n==1 for the first positional arg */ | |
1982 | r = parse_line("(argument)", pos, *arg); | |
1983 | else | |
1984 | r = read_config_file(*arg, false); | |
1985 | if (r < 0) | |
1986 | return r; | |
1987 | ||
1988 | pos++; | |
1989 | } | |
1990 | ||
1991 | return 0; | |
1992 | } | |
1993 | ||
ec0327d6 | 1994 | static int read_config_files(char **args) { |
d16a1c1b ZJS |
1995 | _cleanup_strv_free_ char **files = NULL; |
1996 | _cleanup_free_ char *p = NULL; | |
d16a1c1b ZJS |
1997 | int r; |
1998 | ||
a826d4f7 | 1999 | r = conf_files_list_with_replacement(arg_root, CONF_PATHS_STRV("sysusers.d"), arg_replace, &files, &p); |
d16a1c1b | 2000 | if (r < 0) |
ec0327d6 | 2001 | return r; |
d16a1c1b ZJS |
2002 | |
2003 | STRV_FOREACH(f, files) | |
2004 | if (p && path_equal(*f, p)) { | |
2005 | log_debug("Parsing arguments at position \"%s\"…", *f); | |
2006 | ||
2007 | r = parse_arguments(args); | |
2008 | if (r < 0) | |
2009 | return r; | |
2010 | } else { | |
2011 | log_debug("Reading config file \"%s\"…", *f); | |
2012 | ||
2013 | /* Just warn, ignore result otherwise */ | |
2014 | (void) read_config_file(*f, true); | |
2015 | } | |
2016 | ||
2017 | return 0; | |
2018 | } | |
2019 | ||
71da1673 | 2020 | static int run(int argc, char *argv[]) { |
3537577c | 2021 | #ifndef STANDALONE |
0c3ee127 LP |
2022 | _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL; |
2023 | _cleanup_(decrypted_image_unrefp) DecryptedImage *decrypted_image = NULL; | |
2024 | _cleanup_(umount_and_rmdir_and_freep) char *unlink_dir = NULL; | |
3537577c | 2025 | #endif |
1b992147 | 2026 | _cleanup_close_ int lock = -1; |
1b992147 | 2027 | Item *i; |
dd2fd972 | 2028 | int r; |
1b992147 LP |
2029 | |
2030 | r = parse_argv(argc, argv); | |
2031 | if (r <= 0) | |
71da1673 | 2032 | return r; |
1b992147 | 2033 | |
d2acb93d | 2034 | log_setup(); |
1b992147 | 2035 | |
71da1673 YW |
2036 | if (arg_cat_config) |
2037 | return cat_config(); | |
ec0327d6 | 2038 | |
1b992147 LP |
2039 | umask(0022); |
2040 | ||
c3dacc8b | 2041 | r = mac_selinux_init(); |
71da1673 | 2042 | if (r < 0) |
a9ba0e32 | 2043 | return r; |
1b992147 | 2044 | |
3537577c | 2045 | #ifndef STANDALONE |
0c3ee127 LP |
2046 | if (arg_image) { |
2047 | assert(!arg_root); | |
2048 | ||
2049 | r = mount_image_privately_interactively( | |
2050 | arg_image, | |
4b5de5dd LP |
2051 | DISSECT_IMAGE_GENERIC_ROOT | |
2052 | DISSECT_IMAGE_REQUIRE_ROOT | | |
2053 | DISSECT_IMAGE_VALIDATE_OS | | |
2054 | DISSECT_IMAGE_RELAX_VAR_CHECK | | |
c65f854a LP |
2055 | DISSECT_IMAGE_FSCK | |
2056 | DISSECT_IMAGE_GROWFS, | |
0c3ee127 LP |
2057 | &unlink_dir, |
2058 | &loop_device, | |
2059 | &decrypted_image); | |
2060 | if (r < 0) | |
2061 | return r; | |
2062 | ||
2063 | arg_root = strdup(unlink_dir); | |
2064 | if (!arg_root) | |
2065 | return log_oom(); | |
2066 | } | |
3537577c ZJS |
2067 | #else |
2068 | assert(!arg_image); | |
2069 | #endif | |
0c3ee127 | 2070 | |
d16a1c1b ZJS |
2071 | /* If command line arguments are specified along with --replace, read all |
2072 | * configuration files and insert the positional arguments at the specified | |
2073 | * place. Otherwise, if command line arguments are specified, execute just | |
2074 | * them, and finally, without --replace= or any positional arguments, just | |
2075 | * read configuration and execute it. | |
2076 | */ | |
2077 | if (arg_replace || optind >= argc) | |
ec0327d6 | 2078 | r = read_config_files(argv + optind); |
d16a1c1b ZJS |
2079 | else |
2080 | r = parse_arguments(argv + optind); | |
2081 | if (r < 0) | |
71da1673 | 2082 | return r; |
1b992147 | 2083 | |
fe102d6a LP |
2084 | /* Let's tell nss-systemd not to synthesize the "root" and "nobody" entries for it, so that our detection |
2085 | * whether the names or UID/GID area already used otherwise doesn't get confused. After all, even though | |
2086 | * nss-systemd synthesizes these users/groups, they should still appear in /etc/passwd and /etc/group, as the | |
2087 | * synthesizing logic is merely supposed to be fallback for cases where we run with a completely unpopulated | |
2088 | * /etc. */ | |
71da1673 YW |
2089 | if (setenv("SYSTEMD_NSS_BYPASS_SYNTHETIC", "1", 1) < 0) |
2090 | return log_error_errno(errno, "Failed to set SYSTEMD_NSS_BYPASS_SYNTHETIC environment variable: %m"); | |
fe102d6a | 2091 | |
8530dc44 | 2092 | if (!uid_range) { |
aa25270c | 2093 | /* Default to default range of SYSTEMD_UID_MIN..SYSTEM_UID_MAX. */ |
4b6f9b20 | 2094 | r = read_login_defs(&login_defs, NULL, arg_root); |
71da1673 | 2095 | if (r < 0) |
aa25270c ZJS |
2096 | return log_error_errno(r, "Failed to read %s%s: %m", |
2097 | strempty(arg_root), "/etc/login.defs"); | |
2098 | ||
4b6f9b20 ZJS |
2099 | login_defs_need_warning = true; |
2100 | ||
aa25270c | 2101 | /* We pick a range that very conservative: we look at compiled-in maximum and the value in |
3f316701 | 2102 | * /etc/login.defs. That way the UIDs/GIDs which we allocate will be interpreted correctly, |
aa25270c ZJS |
2103 | * even if /etc/login.defs is removed later. (The bottom bound doesn't matter much, since |
2104 | * it's only used during allocation, so we use the configured value directly). */ | |
4b6f9b20 ZJS |
2105 | uid_t begin = login_defs.system_alloc_uid_min, |
2106 | end = MIN3((uid_t) SYSTEM_UID_MAX, login_defs.system_uid_max, login_defs.system_gid_max); | |
aa25270c ZJS |
2107 | if (begin < end) { |
2108 | r = uid_range_add(&uid_range, &n_uid_range, begin, end - begin + 1); | |
2109 | if (r < 0) | |
2110 | return log_oom(); | |
2111 | } | |
8530dc44 LP |
2112 | } |
2113 | ||
a12b0cc3 LP |
2114 | r = add_implicit(); |
2115 | if (r < 0) | |
71da1673 | 2116 | return r; |
a12b0cc3 | 2117 | |
64fe1095 ZJS |
2118 | if (!arg_dry_run) { |
2119 | lock = take_etc_passwd_lock(arg_root); | |
2120 | if (lock < 0) | |
2121 | return log_error_errno(lock, "Failed to take /etc/passwd lock: %m"); | |
2122 | } | |
1b992147 LP |
2123 | |
2124 | r = load_user_database(); | |
71da1673 YW |
2125 | if (r < 0) |
2126 | return log_error_errno(r, "Failed to load user database: %m"); | |
1b992147 LP |
2127 | |
2128 | r = load_group_database(); | |
71da1673 YW |
2129 | if (r < 0) |
2130 | return log_error_errno(r, "Failed to read group database: %m"); | |
1b992147 | 2131 | |
90e74a66 | 2132 | ORDERED_HASHMAP_FOREACH(i, groups) |
c1a32819 | 2133 | (void) process_item(i); |
1b992147 | 2134 | |
90e74a66 | 2135 | ORDERED_HASHMAP_FOREACH(i, users) |
c1a32819 | 2136 | (void) process_item(i); |
1b992147 LP |
2137 | |
2138 | r = write_files(); | |
2139 | if (r < 0) | |
71da1673 | 2140 | return log_error_errno(r, "Failed to write files: %m"); |
1b992147 | 2141 | |
71da1673 | 2142 | return 0; |
1b992147 | 2143 | } |
71da1673 YW |
2144 | |
2145 | DEFINE_MAIN_FUNCTION(run); |