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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
6b1dc2bd | 2 | |
6b1dc2bd | 3 | #include <errno.h> |
07630cea | 4 | #include <stdio.h> |
6b1dc2bd LP |
5 | #include <unistd.h> |
6 | ||
b5efdb8a | 7 | #include "alloc-util.h" |
028a981c ZJS |
8 | #include "bus-error.h" |
9 | #include "bus-locator.h" | |
a9399358 | 10 | #include "bus-unit-util.h" |
f461a28d | 11 | #include "chase.h" |
6ac62485 | 12 | #include "creds-util.h" |
6c51b49c | 13 | #include "efi-loader.h" |
905dd992 | 14 | #include "env-util.h" |
3ffd4af2 | 15 | #include "fd-util.h" |
0d39fa9c | 16 | #include "fileio.h" |
d15d0333 | 17 | #include "fstab-util.h" |
07630cea | 18 | #include "generator.h" |
77b8e92d | 19 | #include "in-addr-util.h" |
baa6a42d | 20 | #include "initrd-util.h" |
07630cea | 21 | #include "log.h" |
a4ef3e4d | 22 | #include "main-func.h" |
07630cea | 23 | #include "mkdir.h" |
6b1dc2bd | 24 | #include "mount-setup.h" |
4349cd7c | 25 | #include "mount-util.h" |
049af8ad | 26 | #include "mountpoint-util.h" |
55365b0a | 27 | #include "nulstr-util.h" |
6bedfcbb | 28 | #include "parse-util.h" |
07630cea | 29 | #include "path-util.h" |
4e731273 | 30 | #include "proc-cmdline.h" |
028a981c | 31 | #include "process-util.h" |
6b1dc2bd | 32 | #include "special.h" |
98bad05e | 33 | #include "specifier.h" |
8fcde012 | 34 | #include "stat-util.h" |
07630cea | 35 | #include "string-util.h" |
059cb385 | 36 | #include "strv.h" |
07630cea | 37 | #include "unit-name.h" |
689aede8 | 38 | #include "virt.h" |
91214a37 | 39 | #include "volatile-util.h" |
6b1dc2bd | 40 | |
d2194e15 LP |
41 | typedef enum MountPointFlags { |
42 | MOUNT_NOAUTO = 1 << 0, | |
43 | MOUNT_NOFAIL = 1 << 1, | |
44 | MOUNT_AUTOMOUNT = 1 << 2, | |
45 | MOUNT_MAKEFS = 1 << 3, | |
46 | MOUNT_GROWFS = 1 << 4, | |
47 | MOUNT_RW_ONLY = 1 << 5, | |
04959faa | 48 | MOUNT_PCRFS = 1 << 6, |
d2194e15 | 49 | } MountPointFlags; |
4191418b | 50 | |
55365b0a | 51 | typedef struct Mount { |
45c535dd | 52 | bool for_initrd; |
55365b0a YW |
53 | char *what; |
54 | char *where; | |
55 | char *fstype; | |
56 | char *options; | |
57 | } Mount; | |
58 | ||
59 | static void mount_array_free(Mount *mounts, size_t n); | |
60 | ||
028a981c | 61 | static bool arg_sysroot_check = false; |
7a44c7e3 ZJS |
62 | static const char *arg_dest = NULL; |
63 | static const char *arg_dest_late = NULL; | |
e48fdd84 | 64 | static bool arg_fstab_enabled = true; |
567a5307 | 65 | static bool arg_swap_enabled = true; |
6db615c1 LP |
66 | static char *arg_root_what = NULL; |
67 | static char *arg_root_fstype = NULL; | |
68 | static char *arg_root_options = NULL; | |
2f3dfc6f | 69 | static char *arg_root_hash = NULL; |
6db615c1 | 70 | static int arg_root_rw = -1; |
9f103625 TH |
71 | static char *arg_usr_what = NULL; |
72 | static char *arg_usr_fstype = NULL; | |
73 | static char *arg_usr_options = NULL; | |
c1b9e3df | 74 | static char *arg_usr_hash = NULL; |
91214a37 | 75 | static VolatileMode arg_volatile_mode = _VOLATILE_MODE_INVALID; |
200268c6 | 76 | static bool arg_verity = true; |
55365b0a YW |
77 | static Mount *arg_mounts = NULL; |
78 | static size_t arg_n_mounts = 0; | |
6b1dc2bd | 79 | |
a4ef3e4d YW |
80 | STATIC_DESTRUCTOR_REGISTER(arg_root_what, freep); |
81 | STATIC_DESTRUCTOR_REGISTER(arg_root_fstype, freep); | |
82 | STATIC_DESTRUCTOR_REGISTER(arg_root_options, freep); | |
83 | STATIC_DESTRUCTOR_REGISTER(arg_root_hash, freep); | |
84 | STATIC_DESTRUCTOR_REGISTER(arg_usr_what, freep); | |
85 | STATIC_DESTRUCTOR_REGISTER(arg_usr_fstype, freep); | |
86 | STATIC_DESTRUCTOR_REGISTER(arg_usr_options, freep); | |
c1b9e3df | 87 | STATIC_DESTRUCTOR_REGISTER(arg_usr_hash, freep); |
55365b0a YW |
88 | STATIC_ARRAY_DESTRUCTOR_REGISTER(arg_mounts, arg_n_mounts, mount_array_free); |
89 | ||
90 | static void mount_done(Mount *m) { | |
91 | assert(m); | |
92 | ||
93 | free(m->what); | |
94 | free(m->where); | |
95 | free(m->fstype); | |
96 | free(m->options); | |
97 | } | |
98 | ||
99 | static void mount_array_free(Mount *mounts, size_t n) { | |
100 | FOREACH_ARRAY(m, mounts, n) | |
101 | mount_done(m); | |
102 | ||
103 | free(mounts); | |
104 | } | |
105 | ||
45c535dd YW |
106 | static int mount_array_add_internal( |
107 | bool for_initrd, | |
108 | char *in_what, | |
109 | char *in_where, | |
110 | const char *in_fstype, | |
111 | const char *in_options) { | |
112 | ||
55365b0a YW |
113 | _cleanup_free_ char *what = NULL, *where = NULL, *fstype = NULL, *options = NULL; |
114 | int r; | |
115 | ||
116 | /* This takes what and where. */ | |
117 | ||
118 | what = ASSERT_PTR(in_what); | |
119 | where = in_where; | |
120 | ||
121 | fstype = strdup(isempty(in_fstype) ? "auto" : in_fstype); | |
122 | if (!fstype) | |
123 | return -ENOMEM; | |
124 | ||
125 | if (streq(fstype, "swap")) | |
126 | where = mfree(where); | |
127 | ||
128 | if (!isempty(in_options)) { | |
129 | _cleanup_strv_free_ char **options_strv = NULL; | |
130 | ||
131 | r = strv_split_full(&options_strv, in_options, ",", 0); | |
132 | if (r < 0) | |
133 | return r; | |
134 | ||
135 | r = strv_make_nulstr(options_strv, &options, NULL); | |
136 | } else | |
137 | r = strv_make_nulstr(STRV_MAKE("defaults"), &options, NULL); | |
138 | if (r < 0) | |
139 | return r; | |
140 | ||
141 | if (!GREEDY_REALLOC(arg_mounts, arg_n_mounts + 1)) | |
142 | return -ENOMEM; | |
143 | ||
144 | arg_mounts[arg_n_mounts++] = (Mount) { | |
45c535dd | 145 | .for_initrd = for_initrd, |
55365b0a YW |
146 | .what = TAKE_PTR(what), |
147 | .where = TAKE_PTR(where), | |
148 | .fstype = TAKE_PTR(fstype), | |
149 | .options = TAKE_PTR(options), | |
150 | }; | |
151 | ||
152 | return 0; | |
153 | } | |
154 | ||
45c535dd | 155 | static int mount_array_add(bool for_initrd, const char *str) { |
55365b0a YW |
156 | _cleanup_free_ char *what = NULL, *where = NULL, *fstype = NULL, *options = NULL; |
157 | int r; | |
158 | ||
159 | assert(str); | |
160 | ||
161 | r = extract_many_words(&str, ":", EXTRACT_CUNESCAPE | EXTRACT_DONT_COALESCE_SEPARATORS, | |
162 | &what, &where, &fstype, &options, NULL); | |
163 | if (r < 0) | |
164 | return r; | |
165 | if (r < 2) | |
166 | return -EINVAL; | |
167 | if (!isempty(str)) | |
168 | return -EINVAL; | |
169 | ||
45c535dd | 170 | return mount_array_add_internal(for_initrd, TAKE_PTR(what), TAKE_PTR(where), fstype, options); |
55365b0a YW |
171 | } |
172 | ||
45c535dd | 173 | static int mount_array_add_swap(bool for_initrd, const char *str) { |
55365b0a YW |
174 | _cleanup_free_ char *what = NULL, *options = NULL; |
175 | int r; | |
176 | ||
177 | assert(str); | |
178 | ||
179 | r = extract_many_words(&str, ":", EXTRACT_CUNESCAPE | EXTRACT_DONT_COALESCE_SEPARATORS, | |
180 | &what, &options, NULL); | |
181 | if (r < 0) | |
182 | return r; | |
183 | if (r < 1) | |
184 | return -EINVAL; | |
185 | if (!isempty(str)) | |
186 | return -EINVAL; | |
187 | ||
45c535dd | 188 | return mount_array_add_internal(for_initrd, TAKE_PTR(what), NULL, "swap", options); |
55365b0a | 189 | } |
a4ef3e4d | 190 | |
d5cc4be2 LP |
191 | static int write_options(FILE *f, const char *options) { |
192 | _cleanup_free_ char *o = NULL; | |
193 | ||
194 | if (isempty(options)) | |
195 | return 0; | |
196 | ||
197 | if (streq(options, "defaults")) | |
198 | return 0; | |
199 | ||
98bad05e | 200 | o = specifier_escape(options); |
d5cc4be2 LP |
201 | if (!o) |
202 | return log_oom(); | |
203 | ||
204 | fprintf(f, "Options=%s\n", o); | |
205 | return 1; | |
206 | } | |
207 | ||
19d0833b LP |
208 | static int write_what(FILE *f, const char *what) { |
209 | _cleanup_free_ char *w = NULL; | |
210 | ||
98bad05e | 211 | w = specifier_escape(what); |
19d0833b LP |
212 | if (!w) |
213 | return log_oom(); | |
214 | ||
215 | fprintf(f, "What=%s\n", w); | |
216 | return 1; | |
217 | } | |
218 | ||
5607d856 | 219 | static int add_swap( |
7772c177 | 220 | const char *source, |
5607d856 | 221 | const char *what, |
cfeb4d37 | 222 | const char *options, |
d2194e15 | 223 | MountPointFlags flags) { |
5607d856 | 224 | |
fb883e75 | 225 | _cleanup_free_ char *name = NULL; |
7fd1b19b | 226 | _cleanup_fclose_ FILE *f = NULL; |
bf1d7ba7 | 227 | int r; |
6b1dc2bd LP |
228 | |
229 | assert(what); | |
6b1dc2bd | 230 | |
00b4ffde | 231 | if (access("/proc/swaps", F_OK) < 0) { |
55365b0a | 232 | log_info("Swap not supported, ignoring swap entry for %s.", what); |
00b4ffde LP |
233 | return 0; |
234 | } | |
235 | ||
75f86906 | 236 | if (detect_container() > 0) { |
55365b0a | 237 | log_info("Running in a container, ignoring swap entry for %s.", what); |
689aede8 LP |
238 | return 0; |
239 | } | |
240 | ||
028a981c ZJS |
241 | if (arg_sysroot_check) { |
242 | log_info("%s should be enabled in the initrd, will request daemon-reload.", what); | |
243 | return true; | |
244 | } | |
245 | ||
256604cc YW |
246 | log_debug("Found swap entry what=%s makefs=%s growfs=%s pcrfs=%s noauto=%s nofail=%s", |
247 | what, | |
248 | yes_no(flags & MOUNT_MAKEFS), yes_no(flags & MOUNT_GROWFS), yes_no(flags & MOUNT_PCRFS), | |
249 | yes_no(flags & MOUNT_NOAUTO), yes_no(flags & MOUNT_NOFAIL)); | |
250 | ||
7410616c LP |
251 | r = unit_name_from_path(what, ".swap", &name); |
252 | if (r < 0) | |
253 | return log_error_errno(r, "Failed to generate unit name: %m"); | |
6b1dc2bd | 254 | |
7772c177 | 255 | r = generator_open_unit_file(arg_dest, source, name, &f); |
fb883e75 ZJS |
256 | if (r < 0) |
257 | return r; | |
0d536673 | 258 | |
ed4ad488 ZJS |
259 | fprintf(f, |
260 | "[Unit]\n" | |
a7e88558 LP |
261 | "Documentation=man:fstab(5) man:systemd-fstab-generator(8)\n" |
262 | "SourcePath=%s\n", | |
7772c177 | 263 | source); |
19d0833b | 264 | |
a7e88558 LP |
265 | r = generator_write_blockdev_dependency(f, what); |
266 | if (r < 0) | |
267 | return r; | |
268 | ||
269 | fprintf(f, | |
270 | "\n" | |
271 | "[Swap]\n"); | |
272 | ||
19d0833b LP |
273 | r = write_what(f, what); |
274 | if (r < 0) | |
275 | return r; | |
6b1dc2bd | 276 | |
cfeb4d37 | 277 | r = write_options(f, options); |
d5cc4be2 LP |
278 | if (r < 0) |
279 | return r; | |
6b1dc2bd | 280 | |
47cb901e | 281 | r = fflush_and_check(f); |
23bbb0de | 282 | if (r < 0) |
fb883e75 | 283 | return log_error_errno(r, "Failed to write unit file %s: %m", name); |
6b1dc2bd | 284 | |
b3208b66 | 285 | /* use what as where, to have a nicer error message */ |
cfeb4d37 | 286 | r = generator_write_timeouts(arg_dest, what, what, options, NULL); |
b3208b66 ZJS |
287 | if (r < 0) |
288 | return r; | |
289 | ||
d2194e15 | 290 | if (flags & MOUNT_MAKEFS) { |
da495a03 ZJS |
291 | r = generator_hook_up_mkswap(arg_dest, what); |
292 | if (r < 0) | |
293 | return r; | |
294 | } | |
295 | ||
d2194e15 | 296 | if (flags & MOUNT_GROWFS) |
7f2806d5 ZJS |
297 | /* TODO: swap devices must be wiped and recreated */ |
298 | log_warning("%s: growing swap devices is currently unsupported.", what); | |
04959faa LP |
299 | if (flags & MOUNT_PCRFS) |
300 | log_warning("%s: measuring swap devices is currently unsupported.", what); | |
7f2806d5 | 301 | |
d2194e15 | 302 | if (!(flags & MOUNT_NOAUTO)) { |
630d30d3 | 303 | r = generator_add_symlink(arg_dest, SPECIAL_SWAP_TARGET, |
d2194e15 | 304 | (flags & MOUNT_NOFAIL) ? "wants" : "requires", name); |
630d30d3 ZJS |
305 | if (r < 0) |
306 | return r; | |
4e82fe52 TG |
307 | } |
308 | ||
028a981c | 309 | return true; |
6b1dc2bd LP |
310 | } |
311 | ||
cfeb4d37 YW |
312 | static bool mount_is_network(const char *fstype, const char *options) { |
313 | return fstab_test_option(options, "_netdev\0") || | |
314 | (fstype && fstype_is_network(fstype)); | |
6b1dc2bd LP |
315 | } |
316 | ||
22f5a825 | 317 | static bool mount_in_initrd(const char *where, const char *options, bool accept_root) { |
cfeb4d37 | 318 | return fstab_test_option(options, "x-initrd.mount\0") || |
22f5a825 | 319 | (where && PATH_IN_SET(where, "/usr", accept_root ? "/" : NULL)); |
3d22d1ab TG |
320 | } |
321 | ||
33a4c983 LP |
322 | static int write_timeout( |
323 | FILE *f, | |
324 | const char *where, | |
325 | const char *opts, | |
326 | const char *filter, | |
327 | const char *variable) { | |
328 | ||
deb0a77c | 329 | _cleanup_free_ char *timeout = NULL; |
deb0a77c MO |
330 | usec_t u; |
331 | int r; | |
332 | ||
ff0c31bc | 333 | r = fstab_filter_options(opts, filter, NULL, &timeout, NULL, NULL); |
deb0a77c MO |
334 | if (r < 0) |
335 | return log_warning_errno(r, "Failed to parse options: %m"); | |
336 | if (r == 0) | |
337 | return 0; | |
338 | ||
0004f698 | 339 | r = parse_sec_fix_0(timeout, &u); |
deb0a77c MO |
340 | if (r < 0) { |
341 | log_warning("Failed to parse timeout for %s, ignoring: %s", where, timeout); | |
342 | return 0; | |
343 | } | |
344 | ||
5291f26d | 345 | fprintf(f, "%s=%s\n", variable, FORMAT_TIMESPAN(u, 0)); |
deb0a77c MO |
346 | |
347 | return 0; | |
348 | } | |
2e852276 | 349 | |
110773f6 CH |
350 | static int write_idle_timeout(FILE *f, const char *where, const char *opts) { |
351 | return write_timeout(f, where, opts, | |
352 | "x-systemd.idle-timeout\0", "TimeoutIdleSec"); | |
353 | } | |
354 | ||
355 | static int write_mount_timeout(FILE *f, const char *where, const char *opts) { | |
356 | return write_timeout(f, where, opts, | |
357 | "x-systemd.mount-timeout\0", "TimeoutSec"); | |
358 | } | |
359 | ||
33a4c983 LP |
360 | static int write_dependency( |
361 | FILE *f, | |
362 | const char *opts, | |
363 | const char *filter, | |
364 | const char *format) { | |
365 | ||
3519d230 KZ |
366 | _cleanup_strv_free_ char **names = NULL, **units = NULL; |
367 | _cleanup_free_ char *res = NULL; | |
3519d230 KZ |
368 | int r; |
369 | ||
370 | assert(f); | |
371 | assert(opts); | |
372 | ||
d6cef552 | 373 | r = fstab_filter_options(opts, filter, NULL, NULL, &names, NULL); |
3519d230 KZ |
374 | if (r < 0) |
375 | return log_warning_errno(r, "Failed to parse options: %m"); | |
376 | if (r == 0) | |
377 | return 0; | |
378 | ||
379 | STRV_FOREACH(s, names) { | |
380 | char *x; | |
381 | ||
df7c4eb6 | 382 | r = unit_name_mangle_with_suffix(*s, "as dependency", 0, ".mount", &x); |
3519d230 KZ |
383 | if (r < 0) |
384 | return log_error_errno(r, "Failed to generate unit name: %m"); | |
33a4c983 | 385 | |
3519d230 KZ |
386 | r = strv_consume(&units, x); |
387 | if (r < 0) | |
388 | return log_oom(); | |
389 | } | |
390 | ||
391 | if (units) { | |
392 | res = strv_join(units, " "); | |
393 | if (!res) | |
394 | return log_oom(); | |
56e577c6 LP |
395 | |
396 | DISABLE_WARNING_FORMAT_NONLITERAL; | |
ae325185 | 397 | fprintf(f, format, res); |
56e577c6 | 398 | REENABLE_WARNING; |
3519d230 KZ |
399 | } |
400 | ||
401 | return 0; | |
402 | } | |
403 | ||
ae325185 | 404 | static int write_after(FILE *f, const char *opts) { |
33a4c983 | 405 | return write_dependency(f, opts, |
d6cef552 | 406 | "x-systemd.after\0", "After=%1$s\n"); |
ae325185 RB |
407 | } |
408 | ||
409 | static int write_requires_after(FILE *f, const char *opts) { | |
410 | return write_dependency(f, opts, | |
d6cef552 | 411 | "x-systemd.requires\0", "After=%1$s\nRequires=%1$s\n"); |
ae325185 RB |
412 | } |
413 | ||
414 | static int write_before(FILE *f, const char *opts) { | |
415 | return write_dependency(f, opts, | |
d6cef552 | 416 | "x-systemd.before\0", "Before=%1$s\n"); |
ae325185 RB |
417 | } |
418 | ||
3519d230 | 419 | static int write_requires_mounts_for(FILE *f, const char *opts) { |
98bad05e | 420 | _cleanup_strv_free_ char **paths = NULL, **paths_escaped = NULL; |
3519d230 KZ |
421 | _cleanup_free_ char *res = NULL; |
422 | int r; | |
423 | ||
424 | assert(f); | |
425 | assert(opts); | |
426 | ||
d6cef552 | 427 | r = fstab_filter_options(opts, "x-systemd.requires-mounts-for\0", NULL, NULL, &paths, NULL); |
3519d230 KZ |
428 | if (r < 0) |
429 | return log_warning_errno(r, "Failed to parse options: %m"); | |
430 | if (r == 0) | |
431 | return 0; | |
432 | ||
98bad05e LP |
433 | r = specifier_escape_strv(paths, &paths_escaped); |
434 | if (r < 0) | |
435 | return log_error_errno(r, "Failed to escape paths: %m"); | |
436 | ||
437 | res = strv_join(paths_escaped, " "); | |
3519d230 KZ |
438 | if (!res) |
439 | return log_oom(); | |
440 | ||
441 | fprintf(f, "RequiresMountsFor=%s\n", res); | |
442 | ||
443 | return 0; | |
444 | } | |
445 | ||
6371e69b FB |
446 | static int write_extra_dependencies(FILE *f, const char *opts) { |
447 | int r; | |
448 | ||
449 | assert(f); | |
450 | ||
451 | if (opts) { | |
452 | r = write_after(f, opts); | |
453 | if (r < 0) | |
454 | return r; | |
455 | r = write_requires_after(f, opts); | |
456 | if (r < 0) | |
457 | return r; | |
458 | r = write_before(f, opts); | |
459 | if (r < 0) | |
460 | return r; | |
461 | r = write_requires_mounts_for(f, opts); | |
462 | if (r < 0) | |
463 | return r; | |
464 | } | |
465 | ||
466 | return 0; | |
467 | } | |
468 | ||
e8d2f6cd | 469 | static int add_mount( |
7772c177 | 470 | const char *source, |
91214a37 | 471 | const char *dest, |
e8d2f6cd LP |
472 | const char *what, |
473 | const char *where, | |
634735b5 | 474 | const char *original_where, |
6db615c1 | 475 | const char *fstype, |
e8d2f6cd LP |
476 | const char *opts, |
477 | int passno, | |
d2194e15 | 478 | MountPointFlags flags, |
da69e8e4 | 479 | const char *target_unit) { |
e48fdd84 | 480 | |
7fd1b19b | 481 | _cleanup_free_ char |
da495a03 | 482 | *name = NULL, |
fb883e75 | 483 | *automount_name = NULL, |
98bad05e LP |
484 | *filtered = NULL, |
485 | *where_escaped = NULL; | |
be02c1cf | 486 | _cleanup_strv_free_ char **wanted_by = NULL, **required_by = NULL; |
7fd1b19b | 487 | _cleanup_fclose_ FILE *f = NULL; |
94192cda | 488 | int r; |
6b1dc2bd LP |
489 | |
490 | assert(what); | |
491 | assert(where); | |
5e398e54 | 492 | assert(opts); |
da69e8e4 | 493 | assert(target_unit); |
5e398e54 | 494 | assert(source); |
6b1dc2bd | 495 | |
6db615c1 | 496 | if (streq_ptr(fstype, "autofs")) |
6b1dc2bd LP |
497 | return 0; |
498 | ||
499 | if (!is_path(where)) { | |
500 | log_warning("Mount point %s is not a valid path, ignoring.", where); | |
501 | return 0; | |
502 | } | |
503 | ||
504 | if (mount_point_is_api(where) || | |
505 | mount_point_ignore(where)) | |
506 | return 0; | |
507 | ||
028a981c ZJS |
508 | if (arg_sysroot_check) { |
509 | log_info("%s should be mounted in the initrd, will request daemon-reload.", where); | |
510 | return true; | |
511 | } | |
512 | ||
d6cef552 | 513 | r = fstab_filter_options(opts, "x-systemd.wanted-by\0", NULL, NULL, &wanted_by, NULL); |
be02c1cf AR |
514 | if (r < 0) |
515 | return r; | |
516 | ||
d6cef552 | 517 | r = fstab_filter_options(opts, "x-systemd.required-by\0", NULL, NULL, &required_by, NULL); |
be02c1cf AR |
518 | if (r < 0) |
519 | return r; | |
520 | ||
e48fdd84 | 521 | if (path_equal(where, "/")) { |
d2194e15 LP |
522 | if (flags & MOUNT_NOAUTO) |
523 | log_warning("Ignoring \"noauto\" option for root device"); | |
524 | if (flags & MOUNT_NOFAIL) | |
525 | log_warning("Ignoring \"nofail\" option for root device"); | |
526 | if (flags & MOUNT_AUTOMOUNT) | |
527 | log_warning("Ignoring \"automount\" option for root device"); | |
be02c1cf | 528 | if (!strv_isempty(wanted_by)) |
d2194e15 | 529 | log_warning("Ignoring \"x-systemd.wanted-by=\" option for root device"); |
be02c1cf | 530 | if (!strv_isempty(required_by)) |
d2194e15 | 531 | log_warning("Ignoring \"x-systemd.required-by=\" option for root device"); |
2e852276 | 532 | |
be02c1cf AR |
533 | required_by = strv_free(required_by); |
534 | wanted_by = strv_free(wanted_by); | |
d2194e15 | 535 | SET_FLAG(flags, MOUNT_NOAUTO | MOUNT_NOFAIL | MOUNT_AUTOMOUNT, false); |
e48fdd84 LP |
536 | } |
537 | ||
7410616c LP |
538 | r = unit_name_from_path(where, ".mount", &name); |
539 | if (r < 0) | |
540 | return log_error_errno(r, "Failed to generate unit name: %m"); | |
6b1dc2bd | 541 | |
7772c177 | 542 | r = generator_open_unit_file(dest, source, name, &f); |
fb883e75 ZJS |
543 | if (r < 0) |
544 | return r; | |
0d536673 | 545 | |
5e398e54 | 546 | fprintf(f, |
c3834f9b | 547 | "[Unit]\n" |
a7e88558 LP |
548 | "Documentation=man:fstab(5) man:systemd-fstab-generator(8)\n" |
549 | "SourcePath=%s\n", | |
c3834f9b | 550 | source); |
6b1dc2bd | 551 | |
d2194e15 | 552 | if (STRPTR_IN_SET(fstype, "nfs", "nfs4") && !(flags & MOUNT_AUTOMOUNT) && |
65e1dee7 N |
553 | fstab_test_yes_no_option(opts, "bg\0" "fg\0")) { |
554 | /* The default retry timeout that mount.nfs uses for 'bg' mounts | |
555 | * is 10000 minutes, where as it uses 2 minutes for 'fg' mounts. | |
556 | * As we are making 'bg' mounts look like an 'fg' mount to | |
557 | * mount.nfs (so systemd can manage the job-control aspects of 'bg'), | |
558 | * we need to explicitly preserve that default, and also ensure | |
559 | * the systemd mount-timeout doesn't interfere. | |
5a12d1ca | 560 | * By placing these options first, they can be overridden by |
65e1dee7 | 561 | * settings in /etc/fstab. */ |
e66d2eee | 562 | opts = strjoina("x-systemd.mount-timeout=infinity,retry=10000,nofail,", opts, ",fg"); |
d2194e15 | 563 | SET_FLAG(flags, MOUNT_NOFAIL, true); |
65e1dee7 N |
564 | } |
565 | ||
6371e69b FB |
566 | r = write_extra_dependencies(f, opts); |
567 | if (r < 0) | |
568 | return r; | |
3519d230 | 569 | |
da69e8e4 | 570 | /* Order the mount unit we generate relative to target_unit, so that DefaultDependencies= on the |
fa138f5e | 571 | * target unit won't affect us. */ |
da69e8e4 ZJS |
572 | if (!FLAGS_SET(flags, MOUNT_NOFAIL)) |
573 | fprintf(f, "Before=%s\n", target_unit); | |
fa138f5e | 574 | |
e48fdd84 | 575 | if (passno != 0) { |
91214a37 | 576 | r = generator_write_fsck_deps(f, dest, what, where, fstype); |
e48fdd84 LP |
577 | if (r < 0) |
578 | return r; | |
579 | } | |
64e70e4b | 580 | |
a7e88558 LP |
581 | r = generator_write_blockdev_dependency(f, what); |
582 | if (r < 0) | |
583 | return r; | |
584 | ||
585 | fprintf(f, | |
586 | "\n" | |
587 | "[Mount]\n"); | |
588 | ||
b2efed52 ZJS |
589 | r = write_what(f, what); |
590 | if (r < 0) | |
591 | return r; | |
592 | ||
634735b5 CW |
593 | if (original_where) |
594 | fprintf(f, "# Canonicalized from %s\n", original_where); | |
98bad05e LP |
595 | |
596 | where_escaped = specifier_escape(where); | |
597 | if (!where_escaped) | |
598 | return log_oom(); | |
599 | fprintf(f, "Where=%s\n", where_escaped); | |
6db615c1 | 600 | |
98bad05e | 601 | if (!isempty(fstype) && !streq(fstype, "auto")) { |
c2b2df60 | 602 | _cleanup_free_ char *t = NULL; |
98bad05e LP |
603 | |
604 | t = specifier_escape(fstype); | |
605 | if (!t) | |
606 | return -ENOMEM; | |
607 | ||
608 | fprintf(f, "Type=%s\n", t); | |
609 | } | |
6b1dc2bd | 610 | |
91214a37 | 611 | r = generator_write_timeouts(dest, what, where, opts, &filtered); |
29686440 ZJS |
612 | if (r < 0) |
613 | return r; | |
614 | ||
4195077a MK |
615 | r = generator_write_device_deps(dest, what, where, opts); |
616 | if (r < 0) | |
617 | return r; | |
618 | ||
9cf22035 LF |
619 | if (in_initrd() && path_equal(where, "/sysroot") && is_device_path(what)) { |
620 | r = generator_write_initrd_root_device_deps(dest, what); | |
621 | if (r < 0) | |
622 | return r; | |
623 | } | |
624 | ||
110773f6 CH |
625 | r = write_mount_timeout(f, where, opts); |
626 | if (r < 0) | |
627 | return r; | |
628 | ||
d5cc4be2 LP |
629 | r = write_options(f, filtered); |
630 | if (r < 0) | |
631 | return r; | |
5e398e54 | 632 | |
d2194e15 | 633 | if (flags & MOUNT_RW_ONLY) |
f42aa416 MH |
634 | fprintf(f, "ReadWriteOnly=yes\n"); |
635 | ||
4652c56c ZJS |
636 | r = fflush_and_check(f); |
637 | if (r < 0) | |
fb883e75 | 638 | return log_error_errno(r, "Failed to write unit file %s: %m", name); |
6b1dc2bd | 639 | |
d2194e15 | 640 | if (flags & MOUNT_MAKEFS) { |
da495a03 ZJS |
641 | r = generator_hook_up_mkfs(dest, what, where, fstype); |
642 | if (r < 0) | |
643 | return r; | |
644 | } | |
645 | ||
d2194e15 | 646 | if (flags & MOUNT_GROWFS) { |
da69e8e4 | 647 | r = generator_hook_up_growfs(dest, where, target_unit); |
7f2806d5 ZJS |
648 | if (r < 0) |
649 | return r; | |
650 | } | |
651 | ||
04959faa | 652 | if (flags & MOUNT_PCRFS) { |
2f6c52b9 ZJS |
653 | r = efi_stub_measured(LOG_WARNING); |
654 | if (r == 0) | |
6c51b49c | 655 | log_debug("Kernel stub did not measure kernel image into PCR, skipping userspace measurement, too."); |
2f6c52b9 | 656 | else if (r > 0) { |
6c51b49c LP |
657 | r = generator_hook_up_pcrfs(dest, where, target_unit); |
658 | if (r < 0) | |
659 | return r; | |
660 | } | |
04959faa LP |
661 | } |
662 | ||
d2194e15 LP |
663 | if (!FLAGS_SET(flags, MOUNT_AUTOMOUNT)) { |
664 | if (!FLAGS_SET(flags, MOUNT_NOAUTO) && strv_isempty(wanted_by) && strv_isempty(required_by)) { | |
da69e8e4 | 665 | r = generator_add_symlink(dest, target_unit, |
d2194e15 | 666 | (flags & MOUNT_NOFAIL) ? "wants" : "requires", name); |
be02c1cf AR |
667 | if (r < 0) |
668 | return r; | |
669 | } else { | |
be02c1cf AR |
670 | STRV_FOREACH(s, wanted_by) { |
671 | r = generator_add_symlink(dest, *s, "wants", name); | |
672 | if (r < 0) | |
673 | return r; | |
674 | } | |
675 | ||
676 | STRV_FOREACH(s, required_by) { | |
677 | r = generator_add_symlink(dest, *s, "requires", name); | |
678 | if (r < 0) | |
679 | return r; | |
680 | } | |
681 | } | |
682 | } else { | |
7410616c LP |
683 | r = unit_name_from_path(where, ".automount", &automount_name); |
684 | if (r < 0) | |
685 | return log_error_errno(r, "Failed to generate unit name: %m"); | |
6b1dc2bd | 686 | |
8a7033ac | 687 | f = safe_fclose(f); |
6b1dc2bd | 688 | |
7772c177 | 689 | r = generator_open_unit_file(dest, source, automount_name, &f); |
fb883e75 ZJS |
690 | if (r < 0) |
691 | return r; | |
0d536673 | 692 | |
6b1dc2bd | 693 | fprintf(f, |
6b1dc2bd | 694 | "[Unit]\n" |
c3834f9b LP |
695 | "SourcePath=%s\n" |
696 | "Documentation=man:fstab(5) man:systemd-fstab-generator(8)\n", | |
700e07ff HH |
697 | source); |
698 | ||
700e07ff | 699 | fprintf(f, |
bd10a84b | 700 | "\n" |
6b1dc2bd LP |
701 | "[Automount]\n" |
702 | "Where=%s\n", | |
98bad05e | 703 | where_escaped); |
6b1dc2bd | 704 | |
336b5c61 | 705 | r = write_idle_timeout(f, where, opts); |
deb0a77c MO |
706 | if (r < 0) |
707 | return r; | |
708 | ||
4652c56c ZJS |
709 | r = fflush_and_check(f); |
710 | if (r < 0) | |
fb883e75 | 711 | return log_error_errno(r, "Failed to write unit file %s: %m", automount_name); |
6b1dc2bd | 712 | |
da69e8e4 | 713 | r = generator_add_symlink(dest, target_unit, |
d2194e15 | 714 | (flags & MOUNT_NOFAIL) ? "wants" : "requires", automount_name); |
630d30d3 ZJS |
715 | if (r < 0) |
716 | return r; | |
6b1dc2bd LP |
717 | } |
718 | ||
028a981c ZJS |
719 | return true; |
720 | } | |
721 | ||
722 | static int do_daemon_reload(void) { | |
723 | _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; | |
028a981c ZJS |
724 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
725 | int r, k; | |
726 | ||
727 | log_debug("Calling org.freedesktop.systemd1.Manager.Reload()..."); | |
728 | ||
729 | r = bus_connect_system_systemd(&bus); | |
730 | if (r < 0) | |
731 | return log_error_errno(r, "Failed to get D-Bus connection: %m"); | |
732 | ||
a9399358 | 733 | r = bus_service_manager_reload(bus); |
028a981c | 734 | if (r < 0) |
a9399358 | 735 | return r; |
028a981c ZJS |
736 | |
737 | /* We need to requeue the two targets so that any new units which previously were not part of the | |
738 | * targets, and which we now added, will be started. */ | |
739 | ||
740 | r = 0; | |
741 | FOREACH_STRING(unit, SPECIAL_INITRD_FS_TARGET, SPECIAL_SWAP_TARGET) { | |
742 | log_info("Requesting %s/start/replace...", unit); | |
743 | ||
59228d0d | 744 | k = bus_call_method(bus, bus_systemd_mgr, "StartUnit", &error, NULL, "ss", unit, "replace"); |
028a981c ZJS |
745 | if (k < 0) { |
746 | log_error_errno(k, "Failed to (re)start %s: %s", unit, bus_error_message(&error, r)); | |
9ef648cc | 747 | RET_GATHER(r, k); |
028a981c ZJS |
748 | } |
749 | } | |
750 | ||
751 | return r; | |
6b1dc2bd LP |
752 | } |
753 | ||
99e3d476 ZJS |
754 | static const char* sysroot_fstab_path(void) { |
755 | return getenv("SYSTEMD_SYSROOT_FSTAB") ?: "/sysroot/etc/fstab"; | |
756 | } | |
757 | ||
cfeb4d37 YW |
758 | static bool sysfs_check(void) { |
759 | static int cached = -1; | |
760 | int r; | |
761 | ||
762 | if (cached < 0) { | |
763 | r = getenv_bool_secure("SYSTEMD_SYSFS_CHECK"); | |
764 | if (r < 0 && r != -ENXIO) | |
765 | log_debug_errno(r, "Failed to parse $SYSTEMD_SYSFS_CHECK, ignoring: %m"); | |
766 | cached = r != 0; | |
767 | } | |
768 | ||
769 | return cached; | |
770 | } | |
771 | ||
dfce61dd LF |
772 | static int add_sysusr_sysroot_usr_bind_mount(const char *source) { |
773 | return add_mount(source, | |
774 | arg_dest, | |
775 | "/sysusr/usr", | |
776 | "/sysroot/usr", | |
777 | NULL, | |
778 | NULL, | |
779 | "bind", | |
780 | 0, | |
781 | 0, | |
782 | SPECIAL_INITRD_FS_TARGET); | |
783 | } | |
784 | ||
cfeb4d37 YW |
785 | static MountPointFlags fstab_options_to_flags(const char *options, bool is_swap) { |
786 | MountPointFlags flags = 0; | |
787 | ||
788 | if (fstab_test_option(options, "x-systemd.makefs\0")) | |
789 | flags |= MOUNT_MAKEFS; | |
790 | if (fstab_test_option(options, "x-systemd.growfs\0")) | |
791 | flags |= MOUNT_GROWFS; | |
792 | if (fstab_test_option(options, "x-systemd.pcrfs\0")) | |
793 | flags |= MOUNT_PCRFS; | |
794 | if (fstab_test_yes_no_option(options, "noauto\0" "auto\0")) | |
795 | flags |= MOUNT_NOAUTO; | |
796 | if (fstab_test_yes_no_option(options, "nofail\0" "fail\0")) | |
797 | flags |= MOUNT_NOFAIL; | |
798 | ||
799 | if (!is_swap) { | |
800 | if (fstab_test_option(options, "x-systemd.rw-only\0")) | |
801 | flags |= MOUNT_RW_ONLY; | |
802 | if (fstab_test_option(options, | |
803 | "comment=systemd.automount\0" | |
804 | "x-systemd.automount\0")) | |
805 | flags |= MOUNT_AUTOMOUNT; | |
806 | } | |
807 | ||
808 | return flags; | |
809 | } | |
810 | ||
8f88e573 | 811 | static int canonicalize_mount_path(const char *path, const char *type, bool prefix_sysroot, char **ret) { |
b5fd3956 MY |
812 | _cleanup_free_ char *p = NULL; |
813 | bool changed; | |
814 | int r; | |
815 | ||
816 | assert(path); | |
817 | assert(type); | |
818 | assert(STR_IN_SET(type, "where", "what")); | |
819 | assert(ret); | |
820 | ||
821 | // FIXME: when chase() learns to chase non-existent paths, use this here and drop the prefixing with | |
822 | // /sysroot on error below. | |
8f88e573 | 823 | r = chase(path, prefix_sysroot ? "/sysroot" : NULL, CHASE_PREFIX_ROOT | CHASE_NONEXISTENT, &p, NULL); |
b5fd3956 MY |
824 | if (r < 0) { |
825 | log_debug_errno(r, "Failed to chase '%s', using as-is: %m", path); | |
826 | ||
8f88e573 | 827 | if (prefix_sysroot) |
b5fd3956 MY |
828 | p = path_join("/sysroot", path); |
829 | else | |
830 | p = strdup(path); | |
831 | if (!p) | |
832 | return log_oom(); | |
833 | ||
834 | path_simplify(p); | |
835 | } | |
836 | ||
837 | changed = !streq(path, p); | |
838 | if (changed) | |
839 | log_debug("Canonicalized %s=%s to %s", type, path, p); | |
840 | ||
841 | *ret = TAKE_PTR(p); | |
842 | return changed; | |
843 | } | |
844 | ||
cfeb4d37 YW |
845 | static int parse_fstab_one( |
846 | const char *source, | |
847 | const char *what_original, | |
848 | const char *where_original, | |
849 | const char *fstype, | |
850 | const char *options, | |
851 | int passno, | |
8f88e573 | 852 | bool prefix_sysroot, |
22f5a825 | 853 | bool accept_root, /* This takes an effect only when prefix_sysroot is true. */ |
55365b0a | 854 | bool use_swap_enabled) { |
cfeb4d37 | 855 | |
6742eca1 | 856 | _cleanup_free_ char *what = NULL, *where = NULL; |
cfeb4d37 | 857 | MountPointFlags flags; |
b5fd3956 | 858 | bool is_swap, where_changed; |
cfeb4d37 YW |
859 | int r; |
860 | ||
861 | assert(what_original); | |
cfeb4d37 YW |
862 | assert(fstype); |
863 | assert(options); | |
864 | ||
22f5a825 | 865 | if (prefix_sysroot && !mount_in_initrd(where_original, options, accept_root)) |
cfeb4d37 YW |
866 | return 0; |
867 | ||
256604cc | 868 | is_swap = streq_ptr(fstype, "swap"); |
55365b0a | 869 | if (is_swap && use_swap_enabled && !arg_swap_enabled) { |
3aed2593 | 870 | log_info("Swap unit generation disabled on kernel command line, ignoring swap entry for %s.", what_original); |
94456233 YW |
871 | return 0; |
872 | } | |
256604cc | 873 | |
cfeb4d37 YW |
874 | what = fstab_node_to_udev_node(what_original); |
875 | if (!what) | |
876 | return log_oom(); | |
877 | ||
878 | if (path_is_read_only_fs("/sys") > 0 && | |
879 | (streq(what, "sysfs") || | |
880 | (sysfs_check() && is_device_path(what)))) { | |
881 | log_info("/sys/ is read-only (running in a container?), ignoring mount for %s.", what); | |
882 | return 0; | |
883 | } | |
884 | ||
256604cc YW |
885 | flags = fstab_options_to_flags(options, is_swap); |
886 | ||
887 | if (is_swap) | |
888 | return add_swap(source, what, options, flags); | |
889 | ||
239cce38 YW |
890 | if (passno < 0) |
891 | passno = is_device_path(what); | |
892 | ||
256604cc YW |
893 | assert(where_original); /* 'where' is not necessary for swap entry. */ |
894 | ||
6742eca1 | 895 | if (!is_path(where_original)) { |
b5fd3956 | 896 | log_warning("Mount point %s is not a valid path, ignoring.", where_original); |
6742eca1 YW |
897 | return 0; |
898 | } | |
cfeb4d37 | 899 | |
6742eca1 YW |
900 | /* Follow symlinks here; see 5261ba901845c084de5a8fd06500ed09bfb0bd80 which makes sense for |
901 | * mount units, but causes problems since it historically worked to have symlinks in e.g. | |
902 | * /etc/fstab. So we canonicalize here. Note that we use CHASE_NONEXISTENT to handle the case | |
903 | * where a symlink refers to another mount target; this works assuming the sub-mountpoint | |
b5fd3956 | 904 | * target is the final directory. */ |
8f88e573 | 905 | r = canonicalize_mount_path(where_original, "where", prefix_sysroot, &where); |
b5fd3956 MY |
906 | if (r < 0) |
907 | return r; | |
908 | where_changed = r > 0; | |
cfeb4d37 | 909 | |
8f88e573 | 910 | if (prefix_sysroot && fstab_is_bind(options, fstype)) { |
b5fd3956 MY |
911 | /* When in initrd, the source of bind mount needs to be prepended with /sysroot as well. */ |
912 | _cleanup_free_ char *p = NULL; | |
6742eca1 | 913 | |
8f88e573 | 914 | r = canonicalize_mount_path(what, "what", prefix_sysroot, &p); |
b5fd3956 MY |
915 | if (r < 0) |
916 | return r; | |
cfeb4d37 | 917 | |
b5fd3956 MY |
918 | free_and_replace(what, p); |
919 | } | |
6742eca1 | 920 | |
cfeb4d37 YW |
921 | log_debug("Found entry what=%s where=%s type=%s makefs=%s growfs=%s pcrfs=%s noauto=%s nofail=%s", |
922 | what, where, strna(fstype), | |
923 | yes_no(flags & MOUNT_MAKEFS), yes_no(flags & MOUNT_GROWFS), yes_no(flags & MOUNT_PCRFS), | |
924 | yes_no(flags & MOUNT_NOAUTO), yes_no(flags & MOUNT_NOFAIL)); | |
925 | ||
b5fd3956 | 926 | bool is_sysroot = in_initrd() && path_equal(where, "/sysroot"); |
cfeb4d37 YW |
927 | /* See comment from add_sysroot_usr_mount() about the need for extra indirection in case /usr needs |
928 | * to be mounted in order for the root fs to be synthesized based on configuration included in /usr/, | |
929 | * e.g. systemd-repart. */ | |
b5fd3956 | 930 | bool is_sysroot_usr = in_initrd() && path_equal(where, "/sysroot/usr"); |
cfeb4d37 YW |
931 | |
932 | const char *target_unit = | |
cfeb4d37 YW |
933 | is_sysroot ? SPECIAL_INITRD_ROOT_FS_TARGET : |
934 | is_sysroot_usr ? SPECIAL_INITRD_USR_FS_TARGET : | |
b93d9e06 | 935 | prefix_sysroot ? SPECIAL_INITRD_FS_TARGET : |
cfeb4d37 YW |
936 | mount_is_network(fstype, options) ? SPECIAL_REMOTE_FS_TARGET : |
937 | SPECIAL_LOCAL_FS_TARGET; | |
938 | ||
cfeb4d37 YW |
939 | r = add_mount(source, |
940 | arg_dest, | |
941 | what, | |
b5fd3956 MY |
942 | is_sysroot_usr ? "/sysusr/usr" : where, |
943 | !is_sysroot_usr && where_changed ? where_original : NULL, | |
cfeb4d37 YW |
944 | fstype, |
945 | options, | |
946 | passno, | |
947 | flags, | |
948 | target_unit); | |
949 | if (r <= 0) | |
950 | return r; | |
951 | ||
952 | if (is_sysroot_usr) { | |
953 | log_debug("Synthesizing fstab entry what=/sysusr/usr where=/sysroot/usr opts=bind"); | |
954 | r = add_sysusr_sysroot_usr_bind_mount(source); | |
955 | if (r < 0) | |
956 | return r; | |
957 | } | |
958 | ||
959 | return true; | |
960 | } | |
961 | ||
8f88e573 | 962 | static int parse_fstab(bool prefix_sysroot) { |
6db615c1 | 963 | _cleanup_endmntent_ FILE *f = NULL; |
ed4ad488 | 964 | const char *fstab; |
6b1dc2bd | 965 | struct mntent *me; |
cfeb4d37 | 966 | int r, ret = 0; |
6b1dc2bd | 967 | |
8f88e573 | 968 | if (prefix_sysroot) |
99e3d476 | 969 | fstab = sysroot_fstab_path(); |
028a981c | 970 | else { |
99e3d476 | 971 | fstab = fstab_path(); |
028a981c ZJS |
972 | assert(!arg_sysroot_check); |
973 | } | |
99e3d476 | 974 | |
ed4ad488 | 975 | log_debug("Parsing %s...", fstab); |
01a0f7d0 | 976 | |
ed4ad488 | 977 | f = setmntent(fstab, "re"); |
6b1dc2bd LP |
978 | if (!f) { |
979 | if (errno == ENOENT) | |
980 | return 0; | |
981 | ||
ed4ad488 | 982 | return log_error_errno(errno, "Failed to open %s: %m", fstab); |
6b1dc2bd LP |
983 | } |
984 | ||
985 | while ((me = getmntent(f))) { | |
55365b0a YW |
986 | r = parse_fstab_one(fstab, |
987 | me->mnt_fsname, me->mnt_dir, me->mnt_type, me->mnt_opts, me->mnt_passno, | |
22f5a825 YW |
988 | prefix_sysroot, |
989 | /* accept_root = */ false, | |
990 | /* use_swap_enabled = */ true); | |
cfeb4d37 YW |
991 | if (r < 0 && ret >= 0) |
992 | ret = r; | |
993 | if (arg_sysroot_check && r > 0) | |
028a981c | 994 | return true; /* We found a mount or swap that would be started… */ |
6b1dc2bd LP |
995 | } |
996 | ||
cfeb4d37 | 997 | return ret; |
6b1dc2bd LP |
998 | } |
999 | ||
77b8e92d YW |
1000 | static int sysroot_is_nfsroot(void) { |
1001 | union in_addr_union u; | |
1002 | const char *sep, *a; | |
1003 | int r; | |
1004 | ||
1005 | assert(arg_root_what); | |
1006 | ||
1007 | /* From dracut.cmdline(7). | |
1008 | * | |
1009 | * root=[<server-ip>:]<root-dir>[:<nfs-options>] | |
1010 | * root=nfs:[<server-ip>:]<root-dir>[:<nfs-options>], | |
1011 | * root=nfs4:[<server-ip>:]<root-dir>[:<nfs-options>], | |
1012 | * root={dhcp|dhcp6} | |
1013 | * | |
1014 | * mount nfs share from <server-ip>:/<root-dir>, if no server-ip is given, use dhcp next_server. | |
1015 | * If server-ip is an IPv6 address it has to be put in brackets, e.g. [2001:DB8::1]. NFS options | |
1016 | * can be appended with the prefix ":" or "," and are separated by ",". */ | |
1017 | ||
1018 | if (path_equal(arg_root_what, "/dev/nfs") || | |
1019 | STR_IN_SET(arg_root_what, "dhcp", "dhcp6") || | |
1020 | STARTSWITH_SET(arg_root_what, "nfs:", "nfs4:")) | |
1021 | return true; | |
1022 | ||
1023 | /* IPv6 address */ | |
1024 | if (arg_root_what[0] == '[') { | |
1025 | sep = strchr(arg_root_what + 1, ']'); | |
1026 | if (!sep) | |
1027 | return -EINVAL; | |
1028 | ||
ea1c9d3f | 1029 | a = strndupa_safe(arg_root_what + 1, sep - arg_root_what - 1); |
77b8e92d YW |
1030 | |
1031 | r = in_addr_from_string(AF_INET6, a, &u); | |
1032 | if (r < 0) | |
1033 | return r; | |
1034 | ||
1035 | return true; | |
1036 | } | |
1037 | ||
1038 | /* IPv4 address */ | |
1039 | sep = strchr(arg_root_what, ':'); | |
1040 | if (sep) { | |
ea1c9d3f | 1041 | a = strndupa_safe(arg_root_what, sep - arg_root_what); |
77b8e92d YW |
1042 | |
1043 | if (in_addr_from_string(AF_INET, a, &u) >= 0) | |
1044 | return true; | |
1045 | } | |
1046 | ||
1047 | /* root directory without address */ | |
1048 | return path_is_absolute(arg_root_what) && !path_startswith(arg_root_what, "/dev"); | |
1049 | } | |
1050 | ||
2e852276 | 1051 | static int add_sysroot_mount(void) { |
75a59316 | 1052 | _cleanup_free_ char *what = NULL; |
725ad3b0 | 1053 | const char *opts, *fstype; |
01fdfbb8 WF |
1054 | bool default_rw, makefs; |
1055 | MountPointFlags flags; | |
7163e1ca | 1056 | int r; |
5e398e54 | 1057 | |
093c2cfe TH |
1058 | if (isempty(arg_root_what)) { |
1059 | log_debug("Could not find a root= entry on the kernel command line."); | |
1060 | return 0; | |
135b5212 | 1061 | } |
5e398e54 | 1062 | |
138f4c69 | 1063 | if (streq(arg_root_what, "gpt-auto")) { |
4981427c | 1064 | /* This is handled by gpt-auto-generator */ |
138f4c69 LP |
1065 | log_debug("Skipping root directory handling, as gpt-auto was requested."); |
1066 | return 0; | |
dfce61dd LF |
1067 | } else if (streq(arg_root_what, "fstab")) { |
1068 | /* This is handled by parse_fstab */ | |
1069 | log_debug("Using initrd's fstab for /sysroot/ configuration."); | |
1070 | return 0; | |
138f4c69 LP |
1071 | } |
1072 | ||
77b8e92d YW |
1073 | r = sysroot_is_nfsroot(); |
1074 | if (r < 0) | |
1075 | log_debug_errno(r, "Failed to determine if the root directory is on NFS, assuming not: %m"); | |
1076 | else if (r > 0) { | |
3ade16c9 | 1077 | /* This is handled by the kernel or the initrd */ |
77b8e92d | 1078 | log_debug("Skipping root directory handling, as root on NFS was requested."); |
155e1bb4 YW |
1079 | return 0; |
1080 | } | |
1081 | ||
1082 | if (startswith(arg_root_what, "cifs://")) { | |
1083 | log_debug("Skipping root directory handling, as root on CIFS was requested."); | |
1084 | return 0; | |
1085 | } | |
1086 | ||
1087 | if (startswith(arg_root_what, "iscsi:")) { | |
1088 | log_debug("Skipping root directory handling, as root on iSCSI was requested."); | |
1089 | return 0; | |
1090 | } | |
1091 | ||
1092 | if (startswith(arg_root_what, "live:")) { | |
1093 | log_debug("Skipping root directory handling, as root on live image was requested."); | |
3ade16c9 HH |
1094 | return 0; |
1095 | } | |
1096 | ||
725ad3b0 LP |
1097 | if (streq(arg_root_what, "tmpfs")) { |
1098 | /* If root=tmpfs is specified, then take this as shortcut for a writable tmpfs mount as root */ | |
1099 | ||
1100 | what = strdup("rootfs"); /* just a pretty name, to show up in /proc/self/mountinfo */ | |
1101 | if (!what) | |
1102 | return log_oom(); | |
1103 | ||
5a12d1ca | 1104 | fstype = arg_root_fstype ?: "tmpfs"; /* tmpfs, unless overridden */ |
725ad3b0 | 1105 | |
5a12d1ca | 1106 | default_rw = true; /* writable, unless overridden */; |
725ad3b0 LP |
1107 | } else { |
1108 | ||
1109 | what = fstab_node_to_udev_node(arg_root_what); | |
1110 | if (!what) | |
1111 | return log_oom(); | |
1112 | ||
1113 | fstype = arg_root_fstype; /* if not specified explicitly, don't default to anything here */ | |
1114 | ||
5a12d1ca | 1115 | default_rw = false; /* read-only, unless overridden */ |
725ad3b0 | 1116 | } |
093c2cfe | 1117 | |
6db615c1 | 1118 | if (!arg_root_options) |
725ad3b0 | 1119 | opts = arg_root_rw > 0 || (arg_root_rw < 0 && default_rw) ? "rw" : "ro"; |
75a59316 | 1120 | else if (arg_root_rw >= 0 || |
d15d0333 | 1121 | !fstab_test_option(arg_root_options, "ro\0" "rw\0")) |
63c372cb | 1122 | opts = strjoina(arg_root_options, ",", arg_root_rw > 0 ? "rw" : "ro"); |
75a59316 ZJS |
1123 | else |
1124 | opts = arg_root_options; | |
5e398e54 | 1125 | |
e19ae92a | 1126 | log_debug("Found entry what=%s where=/sysroot type=%s opts=%s", what, strna(arg_root_fstype), strempty(opts)); |
7163e1ca | 1127 | |
01fdfbb8 WF |
1128 | makefs = fstab_test_option(opts, "x-systemd.makefs\0"); |
1129 | flags = makefs * MOUNT_MAKEFS; | |
1130 | ||
7772c177 ZJS |
1131 | return add_mount("/proc/cmdline", |
1132 | arg_dest, | |
91214a37 | 1133 | what, |
6db615c1 | 1134 | "/sysroot", |
634735b5 | 1135 | NULL, |
725ad3b0 | 1136 | fstype, |
75a59316 | 1137 | opts, |
f113f8e3 | 1138 | is_device_path(what) ? 1 : 0, /* passno */ |
04959faa | 1139 | flags, /* makefs off, pcrfs off, noauto off, nofail off, automount off */ |
7772c177 | 1140 | SPECIAL_INITRD_ROOT_FS_TARGET); |
5e398e54 TG |
1141 | } |
1142 | ||
2e852276 | 1143 | static int add_sysroot_usr_mount(void) { |
9f103625 TH |
1144 | _cleanup_free_ char *what = NULL; |
1145 | const char *opts; | |
01fdfbb8 WF |
1146 | bool makefs; |
1147 | MountPointFlags flags; | |
29a24ab2 LP |
1148 | int r; |
1149 | ||
1150 | /* Returns 0 if we didn't do anything, > 0 if we either generated a unit for the /usr/ mount, or we | |
1151 | * know for sure something else did */ | |
9f103625 TH |
1152 | |
1153 | if (!arg_usr_what && !arg_usr_fstype && !arg_usr_options) | |
1154 | return 0; | |
1155 | ||
1156 | if (arg_root_what && !arg_usr_what) { | |
40472036 | 1157 | /* Copy over the root device, in case the /usr mount just differs in a mount option (consider btrfs subvolumes) */ |
9f103625 | 1158 | arg_usr_what = strdup(arg_root_what); |
9f103625 TH |
1159 | if (!arg_usr_what) |
1160 | return log_oom(); | |
1161 | } | |
1162 | ||
1163 | if (arg_root_fstype && !arg_usr_fstype) { | |
1164 | arg_usr_fstype = strdup(arg_root_fstype); | |
9f103625 TH |
1165 | if (!arg_usr_fstype) |
1166 | return log_oom(); | |
1167 | } | |
1168 | ||
1169 | if (arg_root_options && !arg_usr_options) { | |
1170 | arg_usr_options = strdup(arg_root_options); | |
9f103625 TH |
1171 | if (!arg_usr_options) |
1172 | return log_oom(); | |
1173 | } | |
1174 | ||
29a24ab2 | 1175 | if (isempty(arg_usr_what)) { |
32fe629a | 1176 | log_debug("Could not find a mount.usr= entry on the kernel command line."); |
9f103625 | 1177 | return 0; |
29a24ab2 LP |
1178 | } |
1179 | ||
1180 | if (streq(arg_usr_what, "gpt-auto")) { | |
1181 | /* This is handled by the gpt-auto generator */ | |
1182 | log_debug("Skipping /usr/ directory handling, as gpt-auto was requested."); | |
1183 | return 1; /* systemd-gpt-auto-generator will generate a unit for this, hence report that a | |
1184 | * unit file is being created for the host /usr/ mount. */ | |
dfce61dd LF |
1185 | } else if (streq(arg_usr_what, "fstab")) { |
1186 | /* This is handled by parse_fstab */ | |
1187 | log_debug("Using initrd's fstab for /sysroot/usr/ configuration."); | |
1188 | return 1; /* parse_fstab will generate a unit for this, hence report that a | |
1189 | * unit file is being created for the host /usr/ mount. */ | |
29a24ab2 LP |
1190 | } |
1191 | ||
1192 | if (path_equal(arg_usr_what, "/dev/nfs")) { | |
1193 | /* This is handled by the initrd (if at all supported, that is) */ | |
1194 | log_debug("Skipping /usr/ directory handling, as /dev/nfs was requested."); | |
1195 | return 1; /* As above, report that NFS code will create the unit */ | |
1196 | } | |
9f103625 TH |
1197 | |
1198 | what = fstab_node_to_udev_node(arg_usr_what); | |
47be5f07 LP |
1199 | if (!what) |
1200 | return log_oom(); | |
9f103625 | 1201 | |
eb580002 MM |
1202 | if (!arg_usr_options) |
1203 | opts = arg_root_rw > 0 ? "rw" : "ro"; | |
d15d0333 | 1204 | else if (!fstab_test_option(arg_usr_options, "ro\0" "rw\0")) |
63c372cb | 1205 | opts = strjoina(arg_usr_options, ",", arg_root_rw > 0 ? "rw" : "ro"); |
eb580002 MM |
1206 | else |
1207 | opts = arg_usr_options; | |
9f103625 | 1208 | |
29a24ab2 LP |
1209 | /* When mounting /usr from the initrd, we add an extra level of indirection: we first mount the /usr/ |
1210 | * partition to /sysusr/usr/, and then afterwards bind mount that to /sysroot/usr/. We do this so | |
1211 | * that we can cover for systems that initially only have a /usr/ around and where the root fs needs | |
1212 | * to be synthesized, based on configuration included in /usr/, e.g. systemd-repart. Software like | |
1213 | * this should order itself after initrd-usr-fs.target and before initrd-fs.target; and it should | |
1214 | * look into both /sysusr/ and /sysroot/ for the configuration data to apply. */ | |
1215 | ||
1216 | log_debug("Found entry what=%s where=/sysusr/usr type=%s opts=%s", what, strna(arg_usr_fstype), strempty(opts)); | |
1217 | ||
01fdfbb8 WF |
1218 | makefs = fstab_test_option(opts, "x-systemd.makefs\0"); |
1219 | flags = makefs * MOUNT_MAKEFS; | |
1220 | ||
7772c177 ZJS |
1221 | r = add_mount("/proc/cmdline", |
1222 | arg_dest, | |
29a24ab2 LP |
1223 | what, |
1224 | "/sysusr/usr", | |
1225 | NULL, | |
1226 | arg_usr_fstype, | |
1227 | opts, | |
1228 | is_device_path(what) ? 1 : 0, /* passno */ | |
01fdfbb8 | 1229 | flags, |
7772c177 | 1230 | SPECIAL_INITRD_USR_FS_TARGET); |
29a24ab2 LP |
1231 | if (r < 0) |
1232 | return r; | |
1233 | ||
dfce61dd | 1234 | log_debug("Synthesizing entry what=/sysusr/usr where=/sysroot/usr opts=bind"); |
29a24ab2 | 1235 | |
dfce61dd | 1236 | r = add_sysusr_sysroot_usr_bind_mount("/proc/cmdline"); |
29a24ab2 LP |
1237 | if (r < 0) |
1238 | return r; | |
1239 | ||
1240 | return 1; | |
1241 | } | |
1242 | ||
1243 | static int add_sysroot_usr_mount_or_fallback(void) { | |
1244 | int r; | |
1245 | ||
1246 | r = add_sysroot_usr_mount(); | |
1247 | if (r != 0) | |
1248 | return r; | |
1249 | ||
1250 | /* OK, so we didn't write anything out for /sysusr/usr/ nor /sysroot/usr/. In this case, let's make | |
1251 | * sure that initrd-usr-fs.target is at least ordered after sysroot.mount so that services that order | |
de47cd06 | 1252 | * themselves after it get the guarantee that /usr/ is definitely mounted somewhere. */ |
29a24ab2 LP |
1253 | |
1254 | return generator_add_symlink( | |
1255 | arg_dest, | |
1256 | SPECIAL_INITRD_USR_FS_TARGET, | |
1257 | "requires", | |
1258 | "sysroot.mount"); | |
9f103625 TH |
1259 | } |
1260 | ||
91214a37 | 1261 | static int add_volatile_root(void) { |
1de7f825 | 1262 | |
91214a37 | 1263 | /* Let's add in systemd-remount-volatile.service which will remount the root device to tmpfs if this is |
1de7f825 | 1264 | * requested (or as an overlayfs), leaving only /usr from the root mount inside. */ |
91214a37 | 1265 | |
1de7f825 | 1266 | if (!IN_SET(arg_volatile_mode, VOLATILE_YES, VOLATILE_OVERLAY)) |
00bb366d | 1267 | return 0; |
91214a37 | 1268 | |
00bb366d | 1269 | return generator_add_symlink(arg_dest, SPECIAL_INITRD_ROOT_FS_TARGET, "requires", |
835cf75a | 1270 | SYSTEM_DATA_UNIT_DIR "/" SPECIAL_VOLATILE_ROOT_SERVICE); |
91214a37 LP |
1271 | } |
1272 | ||
1273 | static int add_volatile_var(void) { | |
1274 | ||
1275 | if (arg_volatile_mode != VOLATILE_STATE) | |
1276 | return 0; | |
1277 | ||
1278 | /* If requested, mount /var as tmpfs, but do so only if there's nothing else defined for this. */ | |
1279 | ||
7772c177 ZJS |
1280 | return add_mount("/proc/cmdline", |
1281 | arg_dest_late, | |
91214a37 LP |
1282 | "tmpfs", |
1283 | "/var", | |
634735b5 | 1284 | NULL, |
91214a37 | 1285 | "tmpfs", |
7d85383e | 1286 | "mode=0755" TMPFS_LIMITS_VAR, |
91214a37 | 1287 | 0, |
4191418b | 1288 | 0, |
7772c177 | 1289 | SPECIAL_LOCAL_FS_TARGET); |
91214a37 LP |
1290 | } |
1291 | ||
55365b0a YW |
1292 | static int add_mounts_from_cmdline(void) { |
1293 | int r, ret = 0; | |
1294 | ||
1295 | /* Handle each entries found in cmdline as a fstab entry. */ | |
1296 | ||
1297 | FOREACH_ARRAY(m, arg_mounts, arg_n_mounts) { | |
45c535dd YW |
1298 | if (m->for_initrd && !in_initrd()) |
1299 | continue; | |
1300 | ||
55365b0a YW |
1301 | r = parse_fstab_one( |
1302 | "/proc/cmdline", | |
1303 | m->what, | |
1304 | m->where, | |
1305 | m->fstype, | |
1306 | m->options, | |
239cce38 | 1307 | /* passno = */ -1, |
45c535dd | 1308 | /* prefix_sysroot = */ !m->for_initrd && in_initrd(), |
22f5a825 | 1309 | /* accept_root = */ true, |
55365b0a YW |
1310 | /* use_swap_enabled = */ false); |
1311 | if (r < 0 && ret >= 0) | |
1312 | ret = r; | |
1313 | } | |
1314 | ||
1315 | return ret; | |
1316 | } | |
1317 | ||
dfd10549 | 1318 | static int add_mounts_from_creds(bool prefix_sysroot) { |
6ac62485 LP |
1319 | _cleanup_free_ void *b = NULL; |
1320 | struct mntent *me; | |
1321 | int r, ret = 0; | |
1322 | size_t bs; | |
1323 | ||
dfd10549 YW |
1324 | assert(in_initrd() || !prefix_sysroot); |
1325 | ||
6ac62485 | 1326 | r = read_credential_with_decryption( |
dfd10549 | 1327 | in_initrd() && !prefix_sysroot ? "fstab.extra.initrd" : "fstab.extra", |
6ac62485 LP |
1328 | &b, &bs); |
1329 | if (r <= 0) | |
1330 | return r; | |
1331 | ||
1332 | _cleanup_fclose_ FILE *f = NULL; | |
1333 | f = fmemopen_unlocked(b, bs, "r"); | |
1334 | if (!f) | |
1335 | return log_oom(); | |
1336 | ||
1337 | while ((me = getmntent(f))) { | |
1338 | r = parse_fstab_one( | |
1339 | "/run/credentials", | |
1340 | me->mnt_fsname, | |
1341 | me->mnt_dir, | |
1342 | me->mnt_type, | |
1343 | me->mnt_opts, | |
1344 | me->mnt_passno, | |
dfd10549 | 1345 | /* prefix_sysroot = */ prefix_sysroot, |
22f5a825 | 1346 | /* accept_root = */ true, |
6ac62485 LP |
1347 | /* use_swap_enabled = */ true); |
1348 | if (r < 0 && ret >= 0) | |
1349 | ret = r; | |
1350 | } | |
1351 | ||
1352 | return ret; | |
1353 | } | |
1354 | ||
96287a49 | 1355 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
74df0fca | 1356 | int r; |
94734142 | 1357 | |
a8d3315b YW |
1358 | assert(key); |
1359 | ||
9f103625 TH |
1360 | /* root=, usr=, usrfstype= and roofstype= may occur more than once, the last |
1361 | * instance should take precedence. In the case of multiple rootflags= | |
1362 | * or usrflags= the arguments should be concatenated */ | |
6db615c1 | 1363 | |
1d84ad94 | 1364 | if (STR_IN_SET(key, "fstab", "rd.fstab")) { |
e48fdd84 | 1365 | |
1d84ad94 | 1366 | r = value ? parse_boolean(value) : 1; |
141a79f4 | 1367 | if (r < 0) |
059cb385 | 1368 | log_warning("Failed to parse fstab switch %s. Ignoring.", value); |
141a79f4 | 1369 | else |
b564224b | 1370 | arg_fstab_enabled = fstab_set_enabled(r); |
94734142 | 1371 | |
1d84ad94 LP |
1372 | } else if (streq(key, "root")) { |
1373 | ||
1374 | if (proc_cmdline_value_missing(key, value)) | |
1375 | return 0; | |
6db615c1 | 1376 | |
338da501 | 1377 | return free_and_strdup_warn(&arg_root_what, empty_to_null(value)); |
6db615c1 | 1378 | |
1d84ad94 LP |
1379 | } else if (streq(key, "rootfstype")) { |
1380 | ||
1381 | if (proc_cmdline_value_missing(key, value)) | |
1382 | return 0; | |
6db615c1 | 1383 | |
338da501 | 1384 | return free_and_strdup_warn(&arg_root_fstype, empty_to_null(value)); |
6db615c1 | 1385 | |
1d84ad94 | 1386 | } else if (streq(key, "rootflags")) { |
6db615c1 | 1387 | |
1d84ad94 LP |
1388 | if (proc_cmdline_value_missing(key, value)) |
1389 | return 0; | |
1390 | ||
c2bc710b | 1391 | if (!strextend_with_separator(&arg_root_options, ",", value)) |
6db615c1 LP |
1392 | return log_oom(); |
1393 | ||
2f3dfc6f LP |
1394 | } else if (streq(key, "roothash")) { |
1395 | ||
1396 | if (proc_cmdline_value_missing(key, value)) | |
1397 | return 0; | |
1398 | ||
338da501 | 1399 | return free_and_strdup_warn(&arg_root_hash, empty_to_null(value)); |
6db615c1 | 1400 | |
1d84ad94 LP |
1401 | } else if (streq(key, "mount.usr")) { |
1402 | ||
1403 | if (proc_cmdline_value_missing(key, value)) | |
1404 | return 0; | |
9f103625 | 1405 | |
338da501 | 1406 | return free_and_strdup_warn(&arg_usr_what, empty_to_null(value)); |
9f103625 | 1407 | |
1d84ad94 LP |
1408 | } else if (streq(key, "mount.usrfstype")) { |
1409 | ||
1410 | if (proc_cmdline_value_missing(key, value)) | |
1411 | return 0; | |
9f103625 | 1412 | |
338da501 | 1413 | return free_and_strdup_warn(&arg_usr_fstype, empty_to_null(value)); |
9f103625 | 1414 | |
1d84ad94 | 1415 | } else if (streq(key, "mount.usrflags")) { |
9f103625 | 1416 | |
1d84ad94 LP |
1417 | if (proc_cmdline_value_missing(key, value)) |
1418 | return 0; | |
1419 | ||
c2bc710b | 1420 | if (!strextend_with_separator(&arg_usr_options, ",", value)) |
9f103625 TH |
1421 | return log_oom(); |
1422 | ||
c1b9e3df MB |
1423 | } else if (streq(key, "usrhash")) { |
1424 | ||
1425 | if (proc_cmdline_value_missing(key, value)) | |
1426 | return 0; | |
1427 | ||
338da501 | 1428 | return free_and_strdup_warn(&arg_usr_hash, empty_to_null(value)); |
c1b9e3df | 1429 | |
6db615c1 LP |
1430 | } else if (streq(key, "rw") && !value) |
1431 | arg_root_rw = true; | |
1432 | else if (streq(key, "ro") && !value) | |
1433 | arg_root_rw = false; | |
91214a37 LP |
1434 | else if (streq(key, "systemd.volatile")) { |
1435 | VolatileMode m; | |
1436 | ||
1437 | if (value) { | |
1438 | m = volatile_mode_from_string(value); | |
1439 | if (m < 0) | |
7211c853 | 1440 | log_warning_errno(m, "Failed to parse systemd.volatile= argument: %s", value); |
91214a37 LP |
1441 | else |
1442 | arg_volatile_mode = m; | |
1443 | } else | |
1444 | arg_volatile_mode = VOLATILE_YES; | |
567a5307 | 1445 | |
1446 | } else if (streq(key, "systemd.swap")) { | |
1447 | ||
1448 | r = value ? parse_boolean(value) : 1; | |
1449 | if (r < 0) | |
1450 | log_warning("Failed to parse systemd.swap switch %s. Ignoring.", value); | |
1451 | else | |
1452 | arg_swap_enabled = r; | |
200268c6 DDM |
1453 | |
1454 | } else if (streq(key, "systemd.verity")) { | |
1455 | ||
1456 | r = value ? parse_boolean(value) : 1; | |
1457 | if (r < 0) | |
1458 | log_warning("Failed to parse systemd.verity= kernel command line switch %s. Ignoring.", value); | |
1459 | else | |
1460 | arg_verity = r; | |
55365b0a | 1461 | |
45c535dd | 1462 | } else if (STR_IN_SET(key, "systemd.mount-extra", "rd.systemd.mount-extra")) { |
55365b0a YW |
1463 | |
1464 | if (proc_cmdline_value_missing(key, value)) | |
1465 | return 0; | |
1466 | ||
45c535dd | 1467 | r = mount_array_add(startswith(key, "rd."), value); |
55365b0a YW |
1468 | if (r < 0) |
1469 | log_warning("Failed to parse systemd.mount-extra= option, ignoring: %s", value); | |
1470 | ||
45c535dd | 1471 | } else if (STR_IN_SET(key, "systemd.swap-extra", "rd.systemd.swap-extra")) { |
55365b0a YW |
1472 | |
1473 | if (proc_cmdline_value_missing(key, value)) | |
1474 | return 0; | |
1475 | ||
45c535dd | 1476 | r = mount_array_add_swap(startswith(key, "rd."), value); |
55365b0a YW |
1477 | if (r < 0) |
1478 | log_warning("Failed to parse systemd.swap-extra= option, ignoring: %s", value); | |
91214a37 | 1479 | } |
94734142 | 1480 | |
d0aa9ce5 | 1481 | return 0; |
94734142 LP |
1482 | } |
1483 | ||
2130a2e5 LP |
1484 | static int determine_device( |
1485 | char **what, | |
1486 | int *rw, | |
1487 | char **options, | |
1488 | const char *hash, | |
1489 | const char *name) { | |
2f3dfc6f | 1490 | |
c1b9e3df MB |
1491 | assert(what); |
1492 | assert(name); | |
1493 | ||
1494 | /* If we have a hash but no device then Verity is used, and we use the DM device. */ | |
1495 | if (*what) | |
2f3dfc6f LP |
1496 | return 0; |
1497 | ||
c1b9e3df | 1498 | if (!hash) |
2f3dfc6f LP |
1499 | return 0; |
1500 | ||
200268c6 DDM |
1501 | if (!arg_verity) |
1502 | return 0; | |
1503 | ||
c1b9e3df MB |
1504 | *what = path_join("/dev/mapper/", name); |
1505 | if (!*what) | |
2f3dfc6f LP |
1506 | return log_oom(); |
1507 | ||
2130a2e5 LP |
1508 | /* Verity is always read-only */ |
1509 | if (rw) | |
1510 | *rw = false; | |
1511 | if (options && !strextend_with_separator(options, ",", "ro")) | |
1512 | return log_oom(); | |
2f3dfc6f | 1513 | |
2130a2e5 | 1514 | log_info("Using verity %s device %s.", name, *what); |
2f3dfc6f LP |
1515 | return 1; |
1516 | } | |
1517 | ||
c1b9e3df | 1518 | static int determine_root(void) { |
2130a2e5 | 1519 | return determine_device(&arg_root_what, &arg_root_rw, NULL, arg_root_hash, "root"); |
c1b9e3df MB |
1520 | } |
1521 | ||
1522 | static int determine_usr(void) { | |
2130a2e5 | 1523 | return determine_device(&arg_usr_what, NULL, &arg_usr_options, arg_usr_hash, "usr"); |
c1b9e3df MB |
1524 | } |
1525 | ||
028a981c ZJS |
1526 | /* If arg_sysroot_check is false, run as generator in the usual fashion. |
1527 | * If it is true, check /sysroot/etc/fstab for any units that we'd want to mount | |
1528 | * in the initrd, and call daemon-reload. We will get reinvoked as a generator, | |
1529 | * with /sysroot/etc/fstab available, and then we can write additional units based | |
1530 | * on that file. */ | |
1531 | static int run_generator(void) { | |
2646f184 | 1532 | int r, ret = 0; |
6b1dc2bd | 1533 | |
1d84ad94 | 1534 | r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, 0); |
b5884878 | 1535 | if (r < 0) |
da927ba9 | 1536 | log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); |
94734142 | 1537 | |
2f3dfc6f | 1538 | (void) determine_root(); |
c1b9e3df | 1539 | (void) determine_usr(); |
2f3dfc6f | 1540 | |
028a981c | 1541 | if (arg_sysroot_check) { |
8f88e573 | 1542 | r = parse_fstab(/* prefix_sysroot = */ true); |
028a981c ZJS |
1543 | if (r == 0) |
1544 | log_debug("Nothing interesting found, not doing daemon-reload."); | |
1545 | if (r > 0) | |
1546 | r = do_daemon_reload(); | |
1547 | return r; | |
1548 | } | |
1549 | ||
9f103625 TH |
1550 | /* Always honour root= and usr= in the kernel command line if we are in an initrd */ |
1551 | if (in_initrd()) { | |
2e852276 | 1552 | r = add_sysroot_mount(); |
2646f184 YW |
1553 | if (r < 0 && ret >= 0) |
1554 | ret = r; | |
003cba39 | 1555 | |
2646f184 YW |
1556 | r = add_sysroot_usr_mount_or_fallback(); |
1557 | if (r < 0 && ret >= 0) | |
1558 | ret = r; | |
91214a37 | 1559 | |
2646f184 YW |
1560 | r = add_volatile_root(); |
1561 | if (r < 0 && ret >= 0) | |
1562 | ret = r; | |
1563 | } else { | |
91214a37 | 1564 | r = add_volatile_var(); |
2646f184 YW |
1565 | if (r < 0 && ret >= 0) |
1566 | ret = r; | |
1567 | } | |
5e398e54 | 1568 | |
e48fdd84 LP |
1569 | /* Honour /etc/fstab only when that's enabled */ |
1570 | if (arg_fstab_enabled) { | |
e48fdd84 | 1571 | /* Parse the local /etc/fstab, possibly from the initrd */ |
8f88e573 | 1572 | r = parse_fstab(/* prefix_sysroot = */ false); |
2646f184 YW |
1573 | if (r < 0 && ret >= 0) |
1574 | ret = r; | |
ac4785b0 | 1575 | |
e48fdd84 | 1576 | /* If running in the initrd also parse the /etc/fstab from the host */ |
2572957e | 1577 | if (in_initrd()) |
8f88e573 | 1578 | r = parse_fstab(/* prefix_sysroot = */ true); |
9b69569d | 1579 | else |
2646f184 YW |
1580 | r = generator_enable_remount_fs_service(arg_dest); |
1581 | if (r < 0 && ret >= 0) | |
1582 | ret = r; | |
e48fdd84 | 1583 | } |
6b1dc2bd | 1584 | |
55365b0a YW |
1585 | r = add_mounts_from_cmdline(); |
1586 | if (r < 0 && ret >= 0) | |
1587 | ret = r; | |
1588 | ||
dfd10549 | 1589 | r = add_mounts_from_creds(/* prefix_sysroot = */ false); |
6ac62485 LP |
1590 | if (r < 0 && ret >= 0) |
1591 | ret = r; | |
1592 | ||
dfd10549 YW |
1593 | if (in_initrd()) { |
1594 | r = add_mounts_from_creds(/* prefix_sysroot = */ true); | |
1595 | if (r < 0 && ret >= 0) | |
1596 | ret = r; | |
1597 | } | |
1598 | ||
2646f184 | 1599 | return ret; |
6b1dc2bd | 1600 | } |
a4ef3e4d | 1601 | |
028a981c ZJS |
1602 | static int run(int argc, char **argv) { |
1603 | arg_sysroot_check = invoked_as(argv, "systemd-sysroot-fstab-check"); | |
1604 | ||
1605 | if (arg_sysroot_check) { | |
1606 | /* Run as in systemd-sysroot-fstab-check mode */ | |
1607 | log_setup(); | |
1608 | ||
1609 | if (strv_length(argv) > 1) | |
1610 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1611 | "This program takes no arguments."); | |
1612 | if (!in_initrd()) | |
1613 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1614 | "This program is only useful in the initrd."); | |
1615 | } else { | |
1616 | /* Run in generator mode */ | |
1617 | log_setup_generator(); | |
1618 | ||
1619 | if (!IN_SET(strv_length(argv), 2, 4)) | |
1620 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1621 | "This program takes one or three arguments."); | |
1622 | ||
1623 | arg_dest = ASSERT_PTR(argv[1]); | |
1624 | arg_dest_late = ASSERT_PTR(argv[argc > 3 ? 3 : 1]); | |
1625 | } | |
1626 | ||
1627 | return run_generator(); | |
1628 | } | |
1629 | ||
1630 | DEFINE_MAIN_FUNCTION(run); |