]>
Commit | Line | Data |
---|---|---|
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 | ||
9e615fa3 | 419 | static int write_mounts_for(const char *x_opt, const char *unit_setting, 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 | ||
9e615fa3 LB |
424 | assert(x_opt); |
425 | assert(unit_setting); | |
3519d230 KZ |
426 | assert(f); |
427 | assert(opts); | |
428 | ||
9e615fa3 | 429 | r = fstab_filter_options(opts, x_opt, NULL, NULL, &paths, NULL); |
3519d230 KZ |
430 | if (r < 0) |
431 | return log_warning_errno(r, "Failed to parse options: %m"); | |
432 | if (r == 0) | |
433 | return 0; | |
434 | ||
98bad05e LP |
435 | r = specifier_escape_strv(paths, &paths_escaped); |
436 | if (r < 0) | |
437 | return log_error_errno(r, "Failed to escape paths: %m"); | |
438 | ||
439 | res = strv_join(paths_escaped, " "); | |
3519d230 KZ |
440 | if (!res) |
441 | return log_oom(); | |
442 | ||
9e615fa3 | 443 | fprintf(f, "%s=%s\n", unit_setting, res); |
3519d230 KZ |
444 | |
445 | return 0; | |
446 | } | |
447 | ||
6371e69b FB |
448 | static int write_extra_dependencies(FILE *f, const char *opts) { |
449 | int r; | |
450 | ||
451 | assert(f); | |
452 | ||
453 | if (opts) { | |
454 | r = write_after(f, opts); | |
455 | if (r < 0) | |
456 | return r; | |
457 | r = write_requires_after(f, opts); | |
458 | if (r < 0) | |
459 | return r; | |
460 | r = write_before(f, opts); | |
461 | if (r < 0) | |
462 | return r; | |
9e615fa3 LB |
463 | r = write_mounts_for("x-systemd.requires-mounts-for\0", "RequiresMountsFor", f, opts); |
464 | if (r < 0) | |
465 | return r; | |
466 | r = write_mounts_for("x-systemd.wants-mounts-for\0", "WantsMountsFor", f, opts); | |
6371e69b FB |
467 | if (r < 0) |
468 | return r; | |
469 | } | |
470 | ||
471 | return 0; | |
472 | } | |
473 | ||
b3ee0148 MY |
474 | static int mandatory_mount_drop_unapplicable_options( |
475 | MountPointFlags *flags, | |
476 | const char *where, | |
477 | const char *options, | |
478 | char **ret_options) { | |
479 | ||
480 | int r; | |
481 | ||
482 | assert(flags); | |
483 | assert(where); | |
b3ee0148 MY |
484 | assert(ret_options); |
485 | ||
486 | if (!(*flags & (MOUNT_NOAUTO|MOUNT_NOFAIL|MOUNT_AUTOMOUNT))) { | |
c521ce42 MY |
487 | r = strdup_or_null(options, ret_options); |
488 | if (r < 0) | |
489 | return r; | |
b3ee0148 | 490 | |
b3ee0148 MY |
491 | return 0; |
492 | } | |
493 | ||
494 | log_debug("Mount '%s' is mandatory, ignoring 'noauto', 'nofail', and 'x-systemd.automount' options.", | |
495 | where); | |
496 | ||
497 | *flags &= ~(MOUNT_NOAUTO|MOUNT_NOFAIL|MOUNT_AUTOMOUNT); | |
498 | ||
499 | r = fstab_filter_options(options, "noauto\0nofail\0x-systemd.automount\0", NULL, NULL, NULL, ret_options); | |
500 | if (r < 0) | |
501 | return r; | |
502 | ||
503 | return 1; | |
504 | } | |
505 | ||
e8d2f6cd | 506 | static int add_mount( |
7772c177 | 507 | const char *source, |
91214a37 | 508 | const char *dest, |
e8d2f6cd LP |
509 | const char *what, |
510 | const char *where, | |
634735b5 | 511 | const char *original_where, |
6db615c1 | 512 | const char *fstype, |
e8d2f6cd LP |
513 | const char *opts, |
514 | int passno, | |
d2194e15 | 515 | MountPointFlags flags, |
da69e8e4 | 516 | const char *target_unit) { |
e48fdd84 | 517 | |
b3ee0148 MY |
518 | _cleanup_free_ char *name = NULL, *automount_name = NULL, *filtered = NULL, *where_escaped = NULL, |
519 | *opts_root_filtered = NULL; | |
be02c1cf | 520 | _cleanup_strv_free_ char **wanted_by = NULL, **required_by = NULL; |
7fd1b19b | 521 | _cleanup_fclose_ FILE *f = NULL; |
94192cda | 522 | int r; |
6b1dc2bd LP |
523 | |
524 | assert(what); | |
525 | assert(where); | |
da69e8e4 | 526 | assert(target_unit); |
5e398e54 | 527 | assert(source); |
6b1dc2bd | 528 | |
6db615c1 | 529 | if (streq_ptr(fstype, "autofs")) |
6b1dc2bd LP |
530 | return 0; |
531 | ||
532 | if (!is_path(where)) { | |
533 | log_warning("Mount point %s is not a valid path, ignoring.", where); | |
534 | return 0; | |
535 | } | |
536 | ||
537 | if (mount_point_is_api(where) || | |
538 | mount_point_ignore(where)) | |
539 | return 0; | |
540 | ||
028a981c ZJS |
541 | if (arg_sysroot_check) { |
542 | log_info("%s should be mounted in the initrd, will request daemon-reload.", where); | |
543 | return true; | |
544 | } | |
545 | ||
d6cef552 | 546 | r = fstab_filter_options(opts, "x-systemd.wanted-by\0", NULL, NULL, &wanted_by, NULL); |
be02c1cf AR |
547 | if (r < 0) |
548 | return r; | |
549 | ||
d6cef552 | 550 | r = fstab_filter_options(opts, "x-systemd.required-by\0", NULL, NULL, &required_by, NULL); |
be02c1cf AR |
551 | if (r < 0) |
552 | return r; | |
553 | ||
e48fdd84 | 554 | if (path_equal(where, "/")) { |
b3ee0148 MY |
555 | r = mandatory_mount_drop_unapplicable_options(&flags, where, opts, &opts_root_filtered); |
556 | if (r < 0) | |
557 | return r; | |
558 | opts = opts_root_filtered; | |
559 | ||
be02c1cf | 560 | if (!strv_isempty(wanted_by)) |
b3ee0148 | 561 | log_debug("Ignoring 'x-systemd.wanted-by=' option for root device."); |
be02c1cf | 562 | if (!strv_isempty(required_by)) |
b3ee0148 | 563 | log_debug("Ignoring 'x-systemd.required-by=' option for root device."); |
2e852276 | 564 | |
be02c1cf AR |
565 | required_by = strv_free(required_by); |
566 | wanted_by = strv_free(wanted_by); | |
e48fdd84 LP |
567 | } |
568 | ||
7410616c LP |
569 | r = unit_name_from_path(where, ".mount", &name); |
570 | if (r < 0) | |
571 | return log_error_errno(r, "Failed to generate unit name: %m"); | |
6b1dc2bd | 572 | |
7772c177 | 573 | r = generator_open_unit_file(dest, source, name, &f); |
fb883e75 ZJS |
574 | if (r < 0) |
575 | return r; | |
0d536673 | 576 | |
5e398e54 | 577 | fprintf(f, |
c3834f9b | 578 | "[Unit]\n" |
a7e88558 LP |
579 | "Documentation=man:fstab(5) man:systemd-fstab-generator(8)\n" |
580 | "SourcePath=%s\n", | |
c3834f9b | 581 | source); |
6b1dc2bd | 582 | |
d2194e15 | 583 | if (STRPTR_IN_SET(fstype, "nfs", "nfs4") && !(flags & MOUNT_AUTOMOUNT) && |
65e1dee7 N |
584 | fstab_test_yes_no_option(opts, "bg\0" "fg\0")) { |
585 | /* The default retry timeout that mount.nfs uses for 'bg' mounts | |
586 | * is 10000 minutes, where as it uses 2 minutes for 'fg' mounts. | |
587 | * As we are making 'bg' mounts look like an 'fg' mount to | |
588 | * mount.nfs (so systemd can manage the job-control aspects of 'bg'), | |
589 | * we need to explicitly preserve that default, and also ensure | |
590 | * the systemd mount-timeout doesn't interfere. | |
5a12d1ca | 591 | * By placing these options first, they can be overridden by |
65e1dee7 | 592 | * settings in /etc/fstab. */ |
e66d2eee | 593 | opts = strjoina("x-systemd.mount-timeout=infinity,retry=10000,nofail,", opts, ",fg"); |
d2194e15 | 594 | SET_FLAG(flags, MOUNT_NOFAIL, true); |
65e1dee7 N |
595 | } |
596 | ||
39a4c452 MY |
597 | if (!strv_isempty(wanted_by) || !strv_isempty(required_by)) { |
598 | /* If x-systemd.{wanted,required}-by= is specified, target_unit is not used */ | |
599 | target_unit = NULL; | |
600 | ||
601 | /* Don't set default ordering dependencies on local-fs.target or remote-fs.target, but we | |
602 | * still need to conflict with umount.target. */ | |
603 | fputs("DefaultDependencies=no\n" | |
604 | "Conflicts=umount.target\n" | |
605 | "Before=umount.target\n", | |
606 | f); | |
607 | } | |
608 | ||
6371e69b FB |
609 | r = write_extra_dependencies(f, opts); |
610 | if (r < 0) | |
611 | return r; | |
3519d230 | 612 | |
da69e8e4 | 613 | /* Order the mount unit we generate relative to target_unit, so that DefaultDependencies= on the |
fa138f5e | 614 | * target unit won't affect us. */ |
39a4c452 | 615 | if (target_unit && !FLAGS_SET(flags, MOUNT_NOFAIL)) |
da69e8e4 | 616 | fprintf(f, "Before=%s\n", target_unit); |
fa138f5e | 617 | |
e48fdd84 | 618 | if (passno != 0) { |
91214a37 | 619 | r = generator_write_fsck_deps(f, dest, what, where, fstype); |
e48fdd84 LP |
620 | if (r < 0) |
621 | return r; | |
622 | } | |
64e70e4b | 623 | |
a7e88558 LP |
624 | r = generator_write_blockdev_dependency(f, what); |
625 | if (r < 0) | |
626 | return r; | |
627 | ||
628 | fprintf(f, | |
629 | "\n" | |
630 | "[Mount]\n"); | |
631 | ||
b2efed52 ZJS |
632 | r = write_what(f, what); |
633 | if (r < 0) | |
634 | return r; | |
635 | ||
634735b5 CW |
636 | if (original_where) |
637 | fprintf(f, "# Canonicalized from %s\n", original_where); | |
98bad05e LP |
638 | |
639 | where_escaped = specifier_escape(where); | |
640 | if (!where_escaped) | |
641 | return log_oom(); | |
642 | fprintf(f, "Where=%s\n", where_escaped); | |
6db615c1 | 643 | |
98bad05e | 644 | if (!isempty(fstype) && !streq(fstype, "auto")) { |
c2b2df60 | 645 | _cleanup_free_ char *t = NULL; |
98bad05e LP |
646 | |
647 | t = specifier_escape(fstype); | |
648 | if (!t) | |
649 | return -ENOMEM; | |
650 | ||
651 | fprintf(f, "Type=%s\n", t); | |
652 | } | |
6b1dc2bd | 653 | |
91214a37 | 654 | r = generator_write_timeouts(dest, what, where, opts, &filtered); |
29686440 ZJS |
655 | if (r < 0) |
656 | return r; | |
657 | ||
4195077a MK |
658 | r = generator_write_device_deps(dest, what, where, opts); |
659 | if (r < 0) | |
660 | return r; | |
661 | ||
9cf22035 LF |
662 | if (in_initrd() && path_equal(where, "/sysroot") && is_device_path(what)) { |
663 | r = generator_write_initrd_root_device_deps(dest, what); | |
664 | if (r < 0) | |
665 | return r; | |
666 | } | |
667 | ||
110773f6 CH |
668 | r = write_mount_timeout(f, where, opts); |
669 | if (r < 0) | |
670 | return r; | |
671 | ||
d5cc4be2 LP |
672 | r = write_options(f, filtered); |
673 | if (r < 0) | |
674 | return r; | |
5e398e54 | 675 | |
d2194e15 | 676 | if (flags & MOUNT_RW_ONLY) |
f42aa416 MH |
677 | fprintf(f, "ReadWriteOnly=yes\n"); |
678 | ||
4652c56c ZJS |
679 | r = fflush_and_check(f); |
680 | if (r < 0) | |
fb883e75 | 681 | return log_error_errno(r, "Failed to write unit file %s: %m", name); |
6b1dc2bd | 682 | |
d2194e15 | 683 | if (flags & MOUNT_MAKEFS) { |
da495a03 ZJS |
684 | r = generator_hook_up_mkfs(dest, what, where, fstype); |
685 | if (r < 0) | |
686 | return r; | |
687 | } | |
688 | ||
d2194e15 | 689 | if (flags & MOUNT_GROWFS) { |
da69e8e4 | 690 | r = generator_hook_up_growfs(dest, where, target_unit); |
7f2806d5 ZJS |
691 | if (r < 0) |
692 | return r; | |
693 | } | |
694 | ||
04959faa | 695 | if (flags & MOUNT_PCRFS) { |
be8f478c | 696 | r = efi_measured_uki(LOG_WARNING); |
2f6c52b9 | 697 | if (r == 0) |
6c51b49c | 698 | log_debug("Kernel stub did not measure kernel image into PCR, skipping userspace measurement, too."); |
2f6c52b9 | 699 | else if (r > 0) { |
6c51b49c LP |
700 | r = generator_hook_up_pcrfs(dest, where, target_unit); |
701 | if (r < 0) | |
702 | return r; | |
703 | } | |
04959faa LP |
704 | } |
705 | ||
39a4c452 | 706 | if (FLAGS_SET(flags, MOUNT_AUTOMOUNT)) { |
7410616c LP |
707 | r = unit_name_from_path(where, ".automount", &automount_name); |
708 | if (r < 0) | |
709 | return log_error_errno(r, "Failed to generate unit name: %m"); | |
6b1dc2bd | 710 | |
8a7033ac | 711 | f = safe_fclose(f); |
6b1dc2bd | 712 | |
7772c177 | 713 | r = generator_open_unit_file(dest, source, automount_name, &f); |
fb883e75 ZJS |
714 | if (r < 0) |
715 | return r; | |
0d536673 | 716 | |
6b1dc2bd | 717 | fprintf(f, |
6b1dc2bd | 718 | "[Unit]\n" |
c3834f9b LP |
719 | "SourcePath=%s\n" |
720 | "Documentation=man:fstab(5) man:systemd-fstab-generator(8)\n", | |
700e07ff HH |
721 | source); |
722 | ||
700e07ff | 723 | fprintf(f, |
bd10a84b | 724 | "\n" |
6b1dc2bd LP |
725 | "[Automount]\n" |
726 | "Where=%s\n", | |
98bad05e | 727 | where_escaped); |
6b1dc2bd | 728 | |
336b5c61 | 729 | r = write_idle_timeout(f, where, opts); |
deb0a77c MO |
730 | if (r < 0) |
731 | return r; | |
732 | ||
4652c56c ZJS |
733 | r = fflush_and_check(f); |
734 | if (r < 0) | |
fb883e75 | 735 | return log_error_errno(r, "Failed to write unit file %s: %m", automount_name); |
39a4c452 | 736 | } |
6b1dc2bd | 737 | |
39a4c452 MY |
738 | if (target_unit) { |
739 | assert(strv_isempty(wanted_by)); | |
740 | assert(strv_isempty(required_by)); | |
741 | ||
742 | /* noauto has no effect if x-systemd.automount is used */ | |
743 | if (!FLAGS_SET(flags, MOUNT_NOAUTO) || automount_name) { | |
744 | r = generator_add_symlink(dest, target_unit, | |
745 | FLAGS_SET(flags, MOUNT_NOFAIL) ? "wants" : "requires", | |
746 | automount_name ?: name); | |
747 | if (r < 0) | |
748 | return r; | |
749 | } | |
750 | } else { | |
751 | const char *unit_name = automount_name ?: name; | |
752 | ||
753 | STRV_FOREACH(s, wanted_by) { | |
754 | r = generator_add_symlink(dest, *s, "wants", unit_name); | |
755 | if (r < 0) | |
756 | return r; | |
757 | } | |
758 | ||
759 | STRV_FOREACH(s, required_by) { | |
760 | r = generator_add_symlink(dest, *s, "requires", unit_name); | |
761 | if (r < 0) | |
762 | return r; | |
763 | } | |
764 | ||
765 | if ((flags & (MOUNT_NOAUTO|MOUNT_NOFAIL)) != 0) | |
766 | log_warning("x-systemd.wanted-by= and/or x-systemd.required-by= specified, 'noauto' and 'nofail' have no effect."); | |
6b1dc2bd LP |
767 | } |
768 | ||
028a981c ZJS |
769 | return true; |
770 | } | |
771 | ||
772 | static int do_daemon_reload(void) { | |
773 | _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; | |
028a981c ZJS |
774 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
775 | int r, k; | |
776 | ||
777 | log_debug("Calling org.freedesktop.systemd1.Manager.Reload()..."); | |
778 | ||
779 | r = bus_connect_system_systemd(&bus); | |
780 | if (r < 0) | |
781 | return log_error_errno(r, "Failed to get D-Bus connection: %m"); | |
782 | ||
a9399358 | 783 | r = bus_service_manager_reload(bus); |
028a981c | 784 | if (r < 0) |
a9399358 | 785 | return r; |
028a981c ZJS |
786 | |
787 | /* We need to requeue the two targets so that any new units which previously were not part of the | |
788 | * targets, and which we now added, will be started. */ | |
789 | ||
790 | r = 0; | |
791 | FOREACH_STRING(unit, SPECIAL_INITRD_FS_TARGET, SPECIAL_SWAP_TARGET) { | |
792 | log_info("Requesting %s/start/replace...", unit); | |
793 | ||
59228d0d | 794 | k = bus_call_method(bus, bus_systemd_mgr, "StartUnit", &error, NULL, "ss", unit, "replace"); |
028a981c ZJS |
795 | if (k < 0) { |
796 | log_error_errno(k, "Failed to (re)start %s: %s", unit, bus_error_message(&error, r)); | |
9ef648cc | 797 | RET_GATHER(r, k); |
028a981c ZJS |
798 | } |
799 | } | |
800 | ||
801 | return r; | |
6b1dc2bd LP |
802 | } |
803 | ||
99e3d476 ZJS |
804 | static const char* sysroot_fstab_path(void) { |
805 | return getenv("SYSTEMD_SYSROOT_FSTAB") ?: "/sysroot/etc/fstab"; | |
806 | } | |
807 | ||
cfeb4d37 YW |
808 | static bool sysfs_check(void) { |
809 | static int cached = -1; | |
810 | int r; | |
811 | ||
812 | if (cached < 0) { | |
813 | r = getenv_bool_secure("SYSTEMD_SYSFS_CHECK"); | |
814 | if (r < 0 && r != -ENXIO) | |
815 | log_debug_errno(r, "Failed to parse $SYSTEMD_SYSFS_CHECK, ignoring: %m"); | |
816 | cached = r != 0; | |
817 | } | |
818 | ||
819 | return cached; | |
820 | } | |
821 | ||
dfce61dd LF |
822 | static int add_sysusr_sysroot_usr_bind_mount(const char *source) { |
823 | return add_mount(source, | |
824 | arg_dest, | |
825 | "/sysusr/usr", | |
826 | "/sysroot/usr", | |
827 | NULL, | |
828 | NULL, | |
829 | "bind", | |
830 | 0, | |
831 | 0, | |
832 | SPECIAL_INITRD_FS_TARGET); | |
833 | } | |
834 | ||
cfeb4d37 YW |
835 | static MountPointFlags fstab_options_to_flags(const char *options, bool is_swap) { |
836 | MountPointFlags flags = 0; | |
837 | ||
c521ce42 MY |
838 | if (isempty(options)) |
839 | return 0; | |
840 | ||
cfeb4d37 YW |
841 | if (fstab_test_option(options, "x-systemd.makefs\0")) |
842 | flags |= MOUNT_MAKEFS; | |
843 | if (fstab_test_option(options, "x-systemd.growfs\0")) | |
844 | flags |= MOUNT_GROWFS; | |
845 | if (fstab_test_option(options, "x-systemd.pcrfs\0")) | |
846 | flags |= MOUNT_PCRFS; | |
847 | if (fstab_test_yes_no_option(options, "noauto\0" "auto\0")) | |
848 | flags |= MOUNT_NOAUTO; | |
849 | if (fstab_test_yes_no_option(options, "nofail\0" "fail\0")) | |
850 | flags |= MOUNT_NOFAIL; | |
851 | ||
852 | if (!is_swap) { | |
853 | if (fstab_test_option(options, "x-systemd.rw-only\0")) | |
854 | flags |= MOUNT_RW_ONLY; | |
855 | if (fstab_test_option(options, | |
856 | "comment=systemd.automount\0" | |
857 | "x-systemd.automount\0")) | |
858 | flags |= MOUNT_AUTOMOUNT; | |
859 | } | |
860 | ||
861 | return flags; | |
862 | } | |
863 | ||
8f88e573 | 864 | static int canonicalize_mount_path(const char *path, const char *type, bool prefix_sysroot, char **ret) { |
b5fd3956 MY |
865 | _cleanup_free_ char *p = NULL; |
866 | bool changed; | |
867 | int r; | |
868 | ||
869 | assert(path); | |
870 | assert(type); | |
871 | assert(STR_IN_SET(type, "where", "what")); | |
872 | assert(ret); | |
873 | ||
874 | // FIXME: when chase() learns to chase non-existent paths, use this here and drop the prefixing with | |
875 | // /sysroot on error below. | |
8f88e573 | 876 | r = chase(path, prefix_sysroot ? "/sysroot" : NULL, CHASE_PREFIX_ROOT | CHASE_NONEXISTENT, &p, NULL); |
b5fd3956 MY |
877 | if (r < 0) { |
878 | log_debug_errno(r, "Failed to chase '%s', using as-is: %m", path); | |
879 | ||
8f88e573 | 880 | if (prefix_sysroot) |
b5fd3956 MY |
881 | p = path_join("/sysroot", path); |
882 | else | |
883 | p = strdup(path); | |
884 | if (!p) | |
885 | return log_oom(); | |
886 | ||
887 | path_simplify(p); | |
888 | } | |
889 | ||
890 | changed = !streq(path, p); | |
891 | if (changed) | |
892 | log_debug("Canonicalized %s=%s to %s", type, path, p); | |
893 | ||
894 | *ret = TAKE_PTR(p); | |
895 | return changed; | |
896 | } | |
897 | ||
cfeb4d37 YW |
898 | static int parse_fstab_one( |
899 | const char *source, | |
900 | const char *what_original, | |
901 | const char *where_original, | |
902 | const char *fstype, | |
903 | const char *options, | |
904 | int passno, | |
8f88e573 | 905 | bool prefix_sysroot, |
22f5a825 | 906 | bool accept_root, /* This takes an effect only when prefix_sysroot is true. */ |
55365b0a | 907 | bool use_swap_enabled) { |
cfeb4d37 | 908 | |
1e9b2e4f | 909 | _cleanup_free_ char *what = NULL, *where = NULL, *opts = NULL; |
cfeb4d37 | 910 | MountPointFlags flags; |
b5fd3956 | 911 | bool is_swap, where_changed; |
cfeb4d37 YW |
912 | int r; |
913 | ||
914 | assert(what_original); | |
cfeb4d37 | 915 | assert(fstype); |
cfeb4d37 | 916 | |
22f5a825 | 917 | if (prefix_sysroot && !mount_in_initrd(where_original, options, accept_root)) |
cfeb4d37 YW |
918 | return 0; |
919 | ||
256604cc | 920 | is_swap = streq_ptr(fstype, "swap"); |
55365b0a | 921 | if (is_swap && use_swap_enabled && !arg_swap_enabled) { |
3aed2593 | 922 | log_info("Swap unit generation disabled on kernel command line, ignoring swap entry for %s.", what_original); |
94456233 YW |
923 | return 0; |
924 | } | |
256604cc | 925 | |
cfeb4d37 YW |
926 | what = fstab_node_to_udev_node(what_original); |
927 | if (!what) | |
928 | return log_oom(); | |
929 | ||
930 | if (path_is_read_only_fs("/sys") > 0 && | |
931 | (streq(what, "sysfs") || | |
932 | (sysfs_check() && is_device_path(what)))) { | |
933 | log_info("/sys/ is read-only (running in a container?), ignoring mount for %s.", what); | |
934 | return 0; | |
935 | } | |
936 | ||
256604cc YW |
937 | flags = fstab_options_to_flags(options, is_swap); |
938 | ||
939 | if (is_swap) | |
940 | return add_swap(source, what, options, flags); | |
941 | ||
239cce38 YW |
942 | if (passno < 0) |
943 | passno = is_device_path(what); | |
944 | ||
256604cc YW |
945 | assert(where_original); /* 'where' is not necessary for swap entry. */ |
946 | ||
6742eca1 | 947 | if (!is_path(where_original)) { |
b5fd3956 | 948 | log_warning("Mount point %s is not a valid path, ignoring.", where_original); |
6742eca1 YW |
949 | return 0; |
950 | } | |
cfeb4d37 | 951 | |
6742eca1 YW |
952 | /* Follow symlinks here; see 5261ba901845c084de5a8fd06500ed09bfb0bd80 which makes sense for |
953 | * mount units, but causes problems since it historically worked to have symlinks in e.g. | |
954 | * /etc/fstab. So we canonicalize here. Note that we use CHASE_NONEXISTENT to handle the case | |
955 | * where a symlink refers to another mount target; this works assuming the sub-mountpoint | |
b5fd3956 | 956 | * target is the final directory. */ |
8f88e573 | 957 | r = canonicalize_mount_path(where_original, "where", prefix_sysroot, &where); |
b5fd3956 MY |
958 | if (r < 0) |
959 | return r; | |
960 | where_changed = r > 0; | |
cfeb4d37 | 961 | |
8f88e573 | 962 | if (prefix_sysroot && fstab_is_bind(options, fstype)) { |
b5fd3956 MY |
963 | /* When in initrd, the source of bind mount needs to be prepended with /sysroot as well. */ |
964 | _cleanup_free_ char *p = NULL; | |
6742eca1 | 965 | |
8f88e573 | 966 | r = canonicalize_mount_path(what, "what", prefix_sysroot, &p); |
b5fd3956 MY |
967 | if (r < 0) |
968 | return r; | |
cfeb4d37 | 969 | |
b5fd3956 MY |
970 | free_and_replace(what, p); |
971 | } | |
6742eca1 | 972 | |
cfeb4d37 YW |
973 | log_debug("Found entry what=%s where=%s type=%s makefs=%s growfs=%s pcrfs=%s noauto=%s nofail=%s", |
974 | what, where, strna(fstype), | |
975 | yes_no(flags & MOUNT_MAKEFS), yes_no(flags & MOUNT_GROWFS), yes_no(flags & MOUNT_PCRFS), | |
976 | yes_no(flags & MOUNT_NOAUTO), yes_no(flags & MOUNT_NOFAIL)); | |
977 | ||
b5fd3956 | 978 | bool is_sysroot = in_initrd() && path_equal(where, "/sysroot"); |
cfeb4d37 YW |
979 | /* See comment from add_sysroot_usr_mount() about the need for extra indirection in case /usr needs |
980 | * to be mounted in order for the root fs to be synthesized based on configuration included in /usr/, | |
981 | * e.g. systemd-repart. */ | |
b5fd3956 | 982 | bool is_sysroot_usr = in_initrd() && path_equal(where, "/sysroot/usr"); |
cfeb4d37 YW |
983 | |
984 | const char *target_unit = | |
cfeb4d37 YW |
985 | is_sysroot ? SPECIAL_INITRD_ROOT_FS_TARGET : |
986 | is_sysroot_usr ? SPECIAL_INITRD_USR_FS_TARGET : | |
b93d9e06 | 987 | prefix_sysroot ? SPECIAL_INITRD_FS_TARGET : |
cfeb4d37 YW |
988 | mount_is_network(fstype, options) ? SPECIAL_REMOTE_FS_TARGET : |
989 | SPECIAL_LOCAL_FS_TARGET; | |
990 | ||
b3ee0148 MY |
991 | /* nofail, noauto and x-systemd.automount don't make sense for critical filesystems we must mount in initrd. */ |
992 | if (is_sysroot || is_sysroot_usr) { | |
993 | r = mandatory_mount_drop_unapplicable_options(&flags, where, options, &opts); | |
1e9b2e4f MS |
994 | if (r < 0) |
995 | return r; | |
1e9b2e4f MS |
996 | options = opts; |
997 | } | |
998 | ||
cfeb4d37 YW |
999 | r = add_mount(source, |
1000 | arg_dest, | |
1001 | what, | |
b5fd3956 MY |
1002 | is_sysroot_usr ? "/sysusr/usr" : where, |
1003 | !is_sysroot_usr && where_changed ? where_original : NULL, | |
cfeb4d37 YW |
1004 | fstype, |
1005 | options, | |
1006 | passno, | |
1007 | flags, | |
1008 | target_unit); | |
1009 | if (r <= 0) | |
1010 | return r; | |
1011 | ||
1012 | if (is_sysroot_usr) { | |
1013 | log_debug("Synthesizing fstab entry what=/sysusr/usr where=/sysroot/usr opts=bind"); | |
1014 | r = add_sysusr_sysroot_usr_bind_mount(source); | |
1015 | if (r < 0) | |
1016 | return r; | |
1017 | } | |
1018 | ||
1019 | return true; | |
1020 | } | |
1021 | ||
8f88e573 | 1022 | static int parse_fstab(bool prefix_sysroot) { |
6db615c1 | 1023 | _cleanup_endmntent_ FILE *f = NULL; |
ed4ad488 | 1024 | const char *fstab; |
6b1dc2bd | 1025 | struct mntent *me; |
cfeb4d37 | 1026 | int r, ret = 0; |
6b1dc2bd | 1027 | |
8f88e573 | 1028 | if (prefix_sysroot) |
99e3d476 | 1029 | fstab = sysroot_fstab_path(); |
028a981c | 1030 | else { |
99e3d476 | 1031 | fstab = fstab_path(); |
028a981c ZJS |
1032 | assert(!arg_sysroot_check); |
1033 | } | |
99e3d476 | 1034 | |
ed4ad488 | 1035 | log_debug("Parsing %s...", fstab); |
01a0f7d0 | 1036 | |
ed4ad488 | 1037 | f = setmntent(fstab, "re"); |
6b1dc2bd LP |
1038 | if (!f) { |
1039 | if (errno == ENOENT) | |
1040 | return 0; | |
1041 | ||
ed4ad488 | 1042 | return log_error_errno(errno, "Failed to open %s: %m", fstab); |
6b1dc2bd LP |
1043 | } |
1044 | ||
1045 | while ((me = getmntent(f))) { | |
55365b0a YW |
1046 | r = parse_fstab_one(fstab, |
1047 | me->mnt_fsname, me->mnt_dir, me->mnt_type, me->mnt_opts, me->mnt_passno, | |
22f5a825 YW |
1048 | prefix_sysroot, |
1049 | /* accept_root = */ false, | |
1050 | /* use_swap_enabled = */ true); | |
cfeb4d37 YW |
1051 | if (r < 0 && ret >= 0) |
1052 | ret = r; | |
1053 | if (arg_sysroot_check && r > 0) | |
028a981c | 1054 | return true; /* We found a mount or swap that would be started… */ |
6b1dc2bd LP |
1055 | } |
1056 | ||
cfeb4d37 | 1057 | return ret; |
6b1dc2bd LP |
1058 | } |
1059 | ||
77b8e92d YW |
1060 | static int sysroot_is_nfsroot(void) { |
1061 | union in_addr_union u; | |
1062 | const char *sep, *a; | |
1063 | int r; | |
1064 | ||
1065 | assert(arg_root_what); | |
1066 | ||
1067 | /* From dracut.cmdline(7). | |
1068 | * | |
1069 | * root=[<server-ip>:]<root-dir>[:<nfs-options>] | |
1070 | * root=nfs:[<server-ip>:]<root-dir>[:<nfs-options>], | |
1071 | * root=nfs4:[<server-ip>:]<root-dir>[:<nfs-options>], | |
1072 | * root={dhcp|dhcp6} | |
1073 | * | |
1074 | * mount nfs share from <server-ip>:/<root-dir>, if no server-ip is given, use dhcp next_server. | |
1075 | * If server-ip is an IPv6 address it has to be put in brackets, e.g. [2001:DB8::1]. NFS options | |
1076 | * can be appended with the prefix ":" or "," and are separated by ",". */ | |
1077 | ||
1078 | if (path_equal(arg_root_what, "/dev/nfs") || | |
1079 | STR_IN_SET(arg_root_what, "dhcp", "dhcp6") || | |
1080 | STARTSWITH_SET(arg_root_what, "nfs:", "nfs4:")) | |
1081 | return true; | |
1082 | ||
1083 | /* IPv6 address */ | |
1084 | if (arg_root_what[0] == '[') { | |
1085 | sep = strchr(arg_root_what + 1, ']'); | |
1086 | if (!sep) | |
1087 | return -EINVAL; | |
1088 | ||
ea1c9d3f | 1089 | a = strndupa_safe(arg_root_what + 1, sep - arg_root_what - 1); |
77b8e92d YW |
1090 | |
1091 | r = in_addr_from_string(AF_INET6, a, &u); | |
1092 | if (r < 0) | |
1093 | return r; | |
1094 | ||
1095 | return true; | |
1096 | } | |
1097 | ||
1098 | /* IPv4 address */ | |
1099 | sep = strchr(arg_root_what, ':'); | |
1100 | if (sep) { | |
ea1c9d3f | 1101 | a = strndupa_safe(arg_root_what, sep - arg_root_what); |
77b8e92d YW |
1102 | |
1103 | if (in_addr_from_string(AF_INET, a, &u) >= 0) | |
1104 | return true; | |
1105 | } | |
1106 | ||
1107 | /* root directory without address */ | |
1108 | return path_is_absolute(arg_root_what) && !path_startswith(arg_root_what, "/dev"); | |
1109 | } | |
1110 | ||
2e852276 | 1111 | static int add_sysroot_mount(void) { |
75a59316 | 1112 | _cleanup_free_ char *what = NULL; |
725ad3b0 | 1113 | const char *opts, *fstype; |
01fdfbb8 WF |
1114 | bool default_rw, makefs; |
1115 | MountPointFlags flags; | |
7163e1ca | 1116 | int r; |
5e398e54 | 1117 | |
093c2cfe TH |
1118 | if (isempty(arg_root_what)) { |
1119 | log_debug("Could not find a root= entry on the kernel command line."); | |
1120 | return 0; | |
135b5212 | 1121 | } |
5e398e54 | 1122 | |
138f4c69 | 1123 | if (streq(arg_root_what, "gpt-auto")) { |
4981427c | 1124 | /* This is handled by gpt-auto-generator */ |
138f4c69 LP |
1125 | log_debug("Skipping root directory handling, as gpt-auto was requested."); |
1126 | return 0; | |
dfce61dd LF |
1127 | } else if (streq(arg_root_what, "fstab")) { |
1128 | /* This is handled by parse_fstab */ | |
1129 | log_debug("Using initrd's fstab for /sysroot/ configuration."); | |
1130 | return 0; | |
138f4c69 LP |
1131 | } |
1132 | ||
77b8e92d YW |
1133 | r = sysroot_is_nfsroot(); |
1134 | if (r < 0) | |
1135 | log_debug_errno(r, "Failed to determine if the root directory is on NFS, assuming not: %m"); | |
1136 | else if (r > 0) { | |
3ade16c9 | 1137 | /* This is handled by the kernel or the initrd */ |
77b8e92d | 1138 | log_debug("Skipping root directory handling, as root on NFS was requested."); |
155e1bb4 YW |
1139 | return 0; |
1140 | } | |
1141 | ||
1142 | if (startswith(arg_root_what, "cifs://")) { | |
1143 | log_debug("Skipping root directory handling, as root on CIFS was requested."); | |
1144 | return 0; | |
1145 | } | |
1146 | ||
1147 | if (startswith(arg_root_what, "iscsi:")) { | |
1148 | log_debug("Skipping root directory handling, as root on iSCSI was requested."); | |
1149 | return 0; | |
1150 | } | |
1151 | ||
1152 | if (startswith(arg_root_what, "live:")) { | |
1153 | log_debug("Skipping root directory handling, as root on live image was requested."); | |
3ade16c9 HH |
1154 | return 0; |
1155 | } | |
1156 | ||
725ad3b0 LP |
1157 | if (streq(arg_root_what, "tmpfs")) { |
1158 | /* If root=tmpfs is specified, then take this as shortcut for a writable tmpfs mount as root */ | |
1159 | ||
1160 | what = strdup("rootfs"); /* just a pretty name, to show up in /proc/self/mountinfo */ | |
1161 | if (!what) | |
1162 | return log_oom(); | |
1163 | ||
5a12d1ca | 1164 | fstype = arg_root_fstype ?: "tmpfs"; /* tmpfs, unless overridden */ |
725ad3b0 | 1165 | |
5a12d1ca | 1166 | default_rw = true; /* writable, unless overridden */; |
725ad3b0 LP |
1167 | } else { |
1168 | ||
1169 | what = fstab_node_to_udev_node(arg_root_what); | |
1170 | if (!what) | |
1171 | return log_oom(); | |
1172 | ||
1173 | fstype = arg_root_fstype; /* if not specified explicitly, don't default to anything here */ | |
1174 | ||
5a12d1ca | 1175 | default_rw = false; /* read-only, unless overridden */ |
725ad3b0 | 1176 | } |
093c2cfe | 1177 | |
6db615c1 | 1178 | if (!arg_root_options) |
725ad3b0 | 1179 | opts = arg_root_rw > 0 || (arg_root_rw < 0 && default_rw) ? "rw" : "ro"; |
75a59316 | 1180 | else if (arg_root_rw >= 0 || |
d15d0333 | 1181 | !fstab_test_option(arg_root_options, "ro\0" "rw\0")) |
63c372cb | 1182 | opts = strjoina(arg_root_options, ",", arg_root_rw > 0 ? "rw" : "ro"); |
75a59316 ZJS |
1183 | else |
1184 | opts = arg_root_options; | |
5e398e54 | 1185 | |
e19ae92a | 1186 | log_debug("Found entry what=%s where=/sysroot type=%s opts=%s", what, strna(arg_root_fstype), strempty(opts)); |
7163e1ca | 1187 | |
01fdfbb8 WF |
1188 | makefs = fstab_test_option(opts, "x-systemd.makefs\0"); |
1189 | flags = makefs * MOUNT_MAKEFS; | |
1190 | ||
7772c177 ZJS |
1191 | return add_mount("/proc/cmdline", |
1192 | arg_dest, | |
91214a37 | 1193 | what, |
6db615c1 | 1194 | "/sysroot", |
634735b5 | 1195 | NULL, |
725ad3b0 | 1196 | fstype, |
75a59316 | 1197 | opts, |
f113f8e3 | 1198 | is_device_path(what) ? 1 : 0, /* passno */ |
04959faa | 1199 | flags, /* makefs off, pcrfs off, noauto off, nofail off, automount off */ |
7772c177 | 1200 | SPECIAL_INITRD_ROOT_FS_TARGET); |
5e398e54 TG |
1201 | } |
1202 | ||
2e852276 | 1203 | static int add_sysroot_usr_mount(void) { |
9f103625 TH |
1204 | _cleanup_free_ char *what = NULL; |
1205 | const char *opts; | |
01fdfbb8 WF |
1206 | bool makefs; |
1207 | MountPointFlags flags; | |
29a24ab2 LP |
1208 | int r; |
1209 | ||
1210 | /* Returns 0 if we didn't do anything, > 0 if we either generated a unit for the /usr/ mount, or we | |
1211 | * know for sure something else did */ | |
9f103625 TH |
1212 | |
1213 | if (!arg_usr_what && !arg_usr_fstype && !arg_usr_options) | |
1214 | return 0; | |
1215 | ||
1216 | if (arg_root_what && !arg_usr_what) { | |
40472036 | 1217 | /* Copy over the root device, in case the /usr mount just differs in a mount option (consider btrfs subvolumes) */ |
9f103625 | 1218 | arg_usr_what = strdup(arg_root_what); |
9f103625 TH |
1219 | if (!arg_usr_what) |
1220 | return log_oom(); | |
1221 | } | |
1222 | ||
1223 | if (arg_root_fstype && !arg_usr_fstype) { | |
1224 | arg_usr_fstype = strdup(arg_root_fstype); | |
9f103625 TH |
1225 | if (!arg_usr_fstype) |
1226 | return log_oom(); | |
1227 | } | |
1228 | ||
1229 | if (arg_root_options && !arg_usr_options) { | |
1230 | arg_usr_options = strdup(arg_root_options); | |
9f103625 TH |
1231 | if (!arg_usr_options) |
1232 | return log_oom(); | |
1233 | } | |
1234 | ||
29a24ab2 | 1235 | if (isempty(arg_usr_what)) { |
32fe629a | 1236 | log_debug("Could not find a mount.usr= entry on the kernel command line."); |
9f103625 | 1237 | return 0; |
29a24ab2 LP |
1238 | } |
1239 | ||
1240 | if (streq(arg_usr_what, "gpt-auto")) { | |
1241 | /* This is handled by the gpt-auto generator */ | |
1242 | log_debug("Skipping /usr/ directory handling, as gpt-auto was requested."); | |
1243 | return 1; /* systemd-gpt-auto-generator will generate a unit for this, hence report that a | |
1244 | * unit file is being created for the host /usr/ mount. */ | |
dfce61dd LF |
1245 | } else if (streq(arg_usr_what, "fstab")) { |
1246 | /* This is handled by parse_fstab */ | |
1247 | log_debug("Using initrd's fstab for /sysroot/usr/ configuration."); | |
1248 | return 1; /* parse_fstab will generate a unit for this, hence report that a | |
1249 | * unit file is being created for the host /usr/ mount. */ | |
29a24ab2 LP |
1250 | } |
1251 | ||
1252 | if (path_equal(arg_usr_what, "/dev/nfs")) { | |
1253 | /* This is handled by the initrd (if at all supported, that is) */ | |
1254 | log_debug("Skipping /usr/ directory handling, as /dev/nfs was requested."); | |
1255 | return 1; /* As above, report that NFS code will create the unit */ | |
1256 | } | |
9f103625 TH |
1257 | |
1258 | what = fstab_node_to_udev_node(arg_usr_what); | |
47be5f07 LP |
1259 | if (!what) |
1260 | return log_oom(); | |
9f103625 | 1261 | |
eb580002 MM |
1262 | if (!arg_usr_options) |
1263 | opts = arg_root_rw > 0 ? "rw" : "ro"; | |
d15d0333 | 1264 | else if (!fstab_test_option(arg_usr_options, "ro\0" "rw\0")) |
63c372cb | 1265 | opts = strjoina(arg_usr_options, ",", arg_root_rw > 0 ? "rw" : "ro"); |
eb580002 MM |
1266 | else |
1267 | opts = arg_usr_options; | |
9f103625 | 1268 | |
29a24ab2 LP |
1269 | /* When mounting /usr from the initrd, we add an extra level of indirection: we first mount the /usr/ |
1270 | * partition to /sysusr/usr/, and then afterwards bind mount that to /sysroot/usr/. We do this so | |
1271 | * that we can cover for systems that initially only have a /usr/ around and where the root fs needs | |
1272 | * to be synthesized, based on configuration included in /usr/, e.g. systemd-repart. Software like | |
1273 | * this should order itself after initrd-usr-fs.target and before initrd-fs.target; and it should | |
1274 | * look into both /sysusr/ and /sysroot/ for the configuration data to apply. */ | |
1275 | ||
1276 | log_debug("Found entry what=%s where=/sysusr/usr type=%s opts=%s", what, strna(arg_usr_fstype), strempty(opts)); | |
1277 | ||
01fdfbb8 WF |
1278 | makefs = fstab_test_option(opts, "x-systemd.makefs\0"); |
1279 | flags = makefs * MOUNT_MAKEFS; | |
1280 | ||
7772c177 ZJS |
1281 | r = add_mount("/proc/cmdline", |
1282 | arg_dest, | |
29a24ab2 LP |
1283 | what, |
1284 | "/sysusr/usr", | |
1285 | NULL, | |
1286 | arg_usr_fstype, | |
1287 | opts, | |
1288 | is_device_path(what) ? 1 : 0, /* passno */ | |
01fdfbb8 | 1289 | flags, |
7772c177 | 1290 | SPECIAL_INITRD_USR_FS_TARGET); |
29a24ab2 LP |
1291 | if (r < 0) |
1292 | return r; | |
1293 | ||
dfce61dd | 1294 | log_debug("Synthesizing entry what=/sysusr/usr where=/sysroot/usr opts=bind"); |
29a24ab2 | 1295 | |
dfce61dd | 1296 | r = add_sysusr_sysroot_usr_bind_mount("/proc/cmdline"); |
29a24ab2 LP |
1297 | if (r < 0) |
1298 | return r; | |
1299 | ||
1300 | return 1; | |
1301 | } | |
1302 | ||
1303 | static int add_sysroot_usr_mount_or_fallback(void) { | |
1304 | int r; | |
1305 | ||
1306 | r = add_sysroot_usr_mount(); | |
1307 | if (r != 0) | |
1308 | return r; | |
1309 | ||
1310 | /* OK, so we didn't write anything out for /sysusr/usr/ nor /sysroot/usr/. In this case, let's make | |
1311 | * sure that initrd-usr-fs.target is at least ordered after sysroot.mount so that services that order | |
de47cd06 | 1312 | * themselves after it get the guarantee that /usr/ is definitely mounted somewhere. */ |
29a24ab2 LP |
1313 | |
1314 | return generator_add_symlink( | |
1315 | arg_dest, | |
1316 | SPECIAL_INITRD_USR_FS_TARGET, | |
1317 | "requires", | |
1318 | "sysroot.mount"); | |
9f103625 TH |
1319 | } |
1320 | ||
91214a37 | 1321 | static int add_volatile_root(void) { |
1de7f825 | 1322 | |
91214a37 | 1323 | /* Let's add in systemd-remount-volatile.service which will remount the root device to tmpfs if this is |
1de7f825 | 1324 | * requested (or as an overlayfs), leaving only /usr from the root mount inside. */ |
91214a37 | 1325 | |
1de7f825 | 1326 | if (!IN_SET(arg_volatile_mode, VOLATILE_YES, VOLATILE_OVERLAY)) |
00bb366d | 1327 | return 0; |
91214a37 | 1328 | |
00bb366d | 1329 | return generator_add_symlink(arg_dest, SPECIAL_INITRD_ROOT_FS_TARGET, "requires", |
835cf75a | 1330 | SYSTEM_DATA_UNIT_DIR "/" SPECIAL_VOLATILE_ROOT_SERVICE); |
91214a37 LP |
1331 | } |
1332 | ||
1333 | static int add_volatile_var(void) { | |
1334 | ||
1335 | if (arg_volatile_mode != VOLATILE_STATE) | |
1336 | return 0; | |
1337 | ||
1338 | /* If requested, mount /var as tmpfs, but do so only if there's nothing else defined for this. */ | |
1339 | ||
7772c177 ZJS |
1340 | return add_mount("/proc/cmdline", |
1341 | arg_dest_late, | |
91214a37 LP |
1342 | "tmpfs", |
1343 | "/var", | |
634735b5 | 1344 | NULL, |
91214a37 | 1345 | "tmpfs", |
7d85383e | 1346 | "mode=0755" TMPFS_LIMITS_VAR, |
91214a37 | 1347 | 0, |
4191418b | 1348 | 0, |
7772c177 | 1349 | SPECIAL_LOCAL_FS_TARGET); |
91214a37 LP |
1350 | } |
1351 | ||
55365b0a | 1352 | static int add_mounts_from_cmdline(void) { |
ba2f3ec8 | 1353 | int r = 0; |
55365b0a YW |
1354 | |
1355 | /* Handle each entries found in cmdline as a fstab entry. */ | |
1356 | ||
1357 | FOREACH_ARRAY(m, arg_mounts, arg_n_mounts) { | |
45c535dd YW |
1358 | if (m->for_initrd && !in_initrd()) |
1359 | continue; | |
1360 | ||
ba2f3ec8 MY |
1361 | RET_GATHER(r, parse_fstab_one("/proc/cmdline", |
1362 | m->what, | |
1363 | m->where, | |
1364 | m->fstype, | |
1365 | m->options, | |
1366 | /* passno = */ -1, | |
1367 | /* prefix_sysroot = */ !m->for_initrd && in_initrd(), | |
1368 | /* accept_root = */ true, | |
1369 | /* use_swap_enabled = */ false)); | |
55365b0a YW |
1370 | } |
1371 | ||
ba2f3ec8 | 1372 | return r; |
55365b0a YW |
1373 | } |
1374 | ||
dfd10549 | 1375 | static int add_mounts_from_creds(bool prefix_sysroot) { |
6ac62485 LP |
1376 | _cleanup_free_ void *b = NULL; |
1377 | struct mntent *me; | |
6ac62485 | 1378 | size_t bs; |
ba2f3ec8 | 1379 | int r; |
6ac62485 | 1380 | |
dfd10549 YW |
1381 | assert(in_initrd() || !prefix_sysroot); |
1382 | ||
6ac62485 | 1383 | r = read_credential_with_decryption( |
dfd10549 | 1384 | in_initrd() && !prefix_sysroot ? "fstab.extra.initrd" : "fstab.extra", |
6ac62485 LP |
1385 | &b, &bs); |
1386 | if (r <= 0) | |
1387 | return r; | |
1388 | ||
1389 | _cleanup_fclose_ FILE *f = NULL; | |
1390 | f = fmemopen_unlocked(b, bs, "r"); | |
1391 | if (!f) | |
1392 | return log_oom(); | |
1393 | ||
ba2f3ec8 | 1394 | r = 0; |
6ac62485 | 1395 | |
ba2f3ec8 MY |
1396 | while ((me = getmntent(f))) |
1397 | RET_GATHER(r, parse_fstab_one("/run/credentials", | |
1398 | me->mnt_fsname, | |
1399 | me->mnt_dir, | |
1400 | me->mnt_type, | |
1401 | me->mnt_opts, | |
1402 | me->mnt_passno, | |
1403 | /* prefix_sysroot = */ prefix_sysroot, | |
1404 | /* accept_root = */ true, | |
1405 | /* use_swap_enabled = */ true)); | |
1406 | ||
1407 | return r; | |
6ac62485 LP |
1408 | } |
1409 | ||
96287a49 | 1410 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
74df0fca | 1411 | int r; |
94734142 | 1412 | |
a8d3315b YW |
1413 | assert(key); |
1414 | ||
9f103625 TH |
1415 | /* root=, usr=, usrfstype= and roofstype= may occur more than once, the last |
1416 | * instance should take precedence. In the case of multiple rootflags= | |
1417 | * or usrflags= the arguments should be concatenated */ | |
6db615c1 | 1418 | |
1d84ad94 | 1419 | if (STR_IN_SET(key, "fstab", "rd.fstab")) { |
e48fdd84 | 1420 | |
1d84ad94 | 1421 | r = value ? parse_boolean(value) : 1; |
141a79f4 | 1422 | if (r < 0) |
059cb385 | 1423 | log_warning("Failed to parse fstab switch %s. Ignoring.", value); |
141a79f4 | 1424 | else |
b564224b | 1425 | arg_fstab_enabled = fstab_set_enabled(r); |
94734142 | 1426 | |
1d84ad94 LP |
1427 | } else if (streq(key, "root")) { |
1428 | ||
1429 | if (proc_cmdline_value_missing(key, value)) | |
1430 | return 0; | |
6db615c1 | 1431 | |
338da501 | 1432 | return free_and_strdup_warn(&arg_root_what, empty_to_null(value)); |
6db615c1 | 1433 | |
1d84ad94 LP |
1434 | } else if (streq(key, "rootfstype")) { |
1435 | ||
1436 | if (proc_cmdline_value_missing(key, value)) | |
1437 | return 0; | |
6db615c1 | 1438 | |
338da501 | 1439 | return free_and_strdup_warn(&arg_root_fstype, empty_to_null(value)); |
6db615c1 | 1440 | |
1d84ad94 | 1441 | } else if (streq(key, "rootflags")) { |
6db615c1 | 1442 | |
1d84ad94 LP |
1443 | if (proc_cmdline_value_missing(key, value)) |
1444 | return 0; | |
1445 | ||
c2bc710b | 1446 | if (!strextend_with_separator(&arg_root_options, ",", value)) |
6db615c1 LP |
1447 | return log_oom(); |
1448 | ||
2f3dfc6f LP |
1449 | } else if (streq(key, "roothash")) { |
1450 | ||
1451 | if (proc_cmdline_value_missing(key, value)) | |
1452 | return 0; | |
1453 | ||
338da501 | 1454 | return free_and_strdup_warn(&arg_root_hash, empty_to_null(value)); |
6db615c1 | 1455 | |
1d84ad94 LP |
1456 | } else if (streq(key, "mount.usr")) { |
1457 | ||
1458 | if (proc_cmdline_value_missing(key, value)) | |
1459 | return 0; | |
9f103625 | 1460 | |
338da501 | 1461 | return free_and_strdup_warn(&arg_usr_what, empty_to_null(value)); |
9f103625 | 1462 | |
1d84ad94 LP |
1463 | } else if (streq(key, "mount.usrfstype")) { |
1464 | ||
1465 | if (proc_cmdline_value_missing(key, value)) | |
1466 | return 0; | |
9f103625 | 1467 | |
338da501 | 1468 | return free_and_strdup_warn(&arg_usr_fstype, empty_to_null(value)); |
9f103625 | 1469 | |
1d84ad94 | 1470 | } else if (streq(key, "mount.usrflags")) { |
9f103625 | 1471 | |
1d84ad94 LP |
1472 | if (proc_cmdline_value_missing(key, value)) |
1473 | return 0; | |
1474 | ||
c2bc710b | 1475 | if (!strextend_with_separator(&arg_usr_options, ",", value)) |
9f103625 TH |
1476 | return log_oom(); |
1477 | ||
c1b9e3df MB |
1478 | } else if (streq(key, "usrhash")) { |
1479 | ||
1480 | if (proc_cmdline_value_missing(key, value)) | |
1481 | return 0; | |
1482 | ||
338da501 | 1483 | return free_and_strdup_warn(&arg_usr_hash, empty_to_null(value)); |
c1b9e3df | 1484 | |
6db615c1 LP |
1485 | } else if (streq(key, "rw") && !value) |
1486 | arg_root_rw = true; | |
1487 | else if (streq(key, "ro") && !value) | |
1488 | arg_root_rw = false; | |
91214a37 LP |
1489 | else if (streq(key, "systemd.volatile")) { |
1490 | VolatileMode m; | |
1491 | ||
1492 | if (value) { | |
1493 | m = volatile_mode_from_string(value); | |
1494 | if (m < 0) | |
7211c853 | 1495 | log_warning_errno(m, "Failed to parse systemd.volatile= argument: %s", value); |
91214a37 LP |
1496 | else |
1497 | arg_volatile_mode = m; | |
1498 | } else | |
1499 | arg_volatile_mode = VOLATILE_YES; | |
567a5307 | 1500 | |
1501 | } else if (streq(key, "systemd.swap")) { | |
1502 | ||
1503 | r = value ? parse_boolean(value) : 1; | |
1504 | if (r < 0) | |
1505 | log_warning("Failed to parse systemd.swap switch %s. Ignoring.", value); | |
1506 | else | |
1507 | arg_swap_enabled = r; | |
200268c6 DDM |
1508 | |
1509 | } else if (streq(key, "systemd.verity")) { | |
1510 | ||
1511 | r = value ? parse_boolean(value) : 1; | |
1512 | if (r < 0) | |
1513 | log_warning("Failed to parse systemd.verity= kernel command line switch %s. Ignoring.", value); | |
1514 | else | |
1515 | arg_verity = r; | |
55365b0a | 1516 | |
45c535dd | 1517 | } else if (STR_IN_SET(key, "systemd.mount-extra", "rd.systemd.mount-extra")) { |
55365b0a YW |
1518 | |
1519 | if (proc_cmdline_value_missing(key, value)) | |
1520 | return 0; | |
1521 | ||
45c535dd | 1522 | r = mount_array_add(startswith(key, "rd."), value); |
55365b0a YW |
1523 | if (r < 0) |
1524 | log_warning("Failed to parse systemd.mount-extra= option, ignoring: %s", value); | |
1525 | ||
45c535dd | 1526 | } else if (STR_IN_SET(key, "systemd.swap-extra", "rd.systemd.swap-extra")) { |
55365b0a YW |
1527 | |
1528 | if (proc_cmdline_value_missing(key, value)) | |
1529 | return 0; | |
1530 | ||
45c535dd | 1531 | r = mount_array_add_swap(startswith(key, "rd."), value); |
55365b0a YW |
1532 | if (r < 0) |
1533 | log_warning("Failed to parse systemd.swap-extra= option, ignoring: %s", value); | |
91214a37 | 1534 | } |
94734142 | 1535 | |
d0aa9ce5 | 1536 | return 0; |
94734142 LP |
1537 | } |
1538 | ||
2130a2e5 LP |
1539 | static int determine_device( |
1540 | char **what, | |
1541 | int *rw, | |
1542 | char **options, | |
1543 | const char *hash, | |
1544 | const char *name) { | |
2f3dfc6f | 1545 | |
c1b9e3df MB |
1546 | assert(what); |
1547 | assert(name); | |
1548 | ||
1549 | /* If we have a hash but no device then Verity is used, and we use the DM device. */ | |
1550 | if (*what) | |
2f3dfc6f LP |
1551 | return 0; |
1552 | ||
c1b9e3df | 1553 | if (!hash) |
2f3dfc6f LP |
1554 | return 0; |
1555 | ||
200268c6 DDM |
1556 | if (!arg_verity) |
1557 | return 0; | |
1558 | ||
c1b9e3df MB |
1559 | *what = path_join("/dev/mapper/", name); |
1560 | if (!*what) | |
2f3dfc6f LP |
1561 | return log_oom(); |
1562 | ||
2130a2e5 LP |
1563 | /* Verity is always read-only */ |
1564 | if (rw) | |
1565 | *rw = false; | |
1566 | if (options && !strextend_with_separator(options, ",", "ro")) | |
1567 | return log_oom(); | |
2f3dfc6f | 1568 | |
2130a2e5 | 1569 | log_info("Using verity %s device %s.", name, *what); |
2f3dfc6f LP |
1570 | return 1; |
1571 | } | |
1572 | ||
c1b9e3df | 1573 | static int determine_root(void) { |
2130a2e5 | 1574 | return determine_device(&arg_root_what, &arg_root_rw, NULL, arg_root_hash, "root"); |
c1b9e3df MB |
1575 | } |
1576 | ||
1577 | static int determine_usr(void) { | |
2130a2e5 | 1578 | return determine_device(&arg_usr_what, NULL, &arg_usr_options, arg_usr_hash, "usr"); |
c1b9e3df MB |
1579 | } |
1580 | ||
028a981c ZJS |
1581 | /* If arg_sysroot_check is false, run as generator in the usual fashion. |
1582 | * If it is true, check /sysroot/etc/fstab for any units that we'd want to mount | |
1583 | * in the initrd, and call daemon-reload. We will get reinvoked as a generator, | |
1584 | * with /sysroot/etc/fstab available, and then we can write additional units based | |
1585 | * on that file. */ | |
1586 | static int run_generator(void) { | |
4c7cc696 | 1587 | int r; |
6b1dc2bd | 1588 | |
1d84ad94 | 1589 | r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, 0); |
b5884878 | 1590 | if (r < 0) |
da927ba9 | 1591 | log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); |
94734142 | 1592 | |
2f3dfc6f | 1593 | (void) determine_root(); |
c1b9e3df | 1594 | (void) determine_usr(); |
2f3dfc6f | 1595 | |
028a981c | 1596 | if (arg_sysroot_check) { |
8f88e573 | 1597 | r = parse_fstab(/* prefix_sysroot = */ true); |
028a981c ZJS |
1598 | if (r == 0) |
1599 | log_debug("Nothing interesting found, not doing daemon-reload."); | |
1600 | if (r > 0) | |
1601 | r = do_daemon_reload(); | |
1602 | return r; | |
1603 | } | |
1604 | ||
ba2f3ec8 MY |
1605 | r = 0; |
1606 | ||
9f103625 TH |
1607 | /* Always honour root= and usr= in the kernel command line if we are in an initrd */ |
1608 | if (in_initrd()) { | |
ba2f3ec8 | 1609 | RET_GATHER(r, add_sysroot_mount()); |
003cba39 | 1610 | |
ba2f3ec8 | 1611 | RET_GATHER(r, add_sysroot_usr_mount_or_fallback()); |
91214a37 | 1612 | |
ba2f3ec8 MY |
1613 | RET_GATHER(r, add_volatile_root()); |
1614 | } else | |
1615 | RET_GATHER(r, add_volatile_var()); | |
5e398e54 | 1616 | |
e48fdd84 LP |
1617 | /* Honour /etc/fstab only when that's enabled */ |
1618 | if (arg_fstab_enabled) { | |
e48fdd84 | 1619 | /* Parse the local /etc/fstab, possibly from the initrd */ |
ba2f3ec8 | 1620 | RET_GATHER(r, parse_fstab(/* prefix_sysroot = */ false)); |
ac4785b0 | 1621 | |
e48fdd84 | 1622 | /* If running in the initrd also parse the /etc/fstab from the host */ |
2572957e | 1623 | if (in_initrd()) |
ba2f3ec8 | 1624 | RET_GATHER(r, parse_fstab(/* prefix_sysroot = */ true)); |
9b69569d | 1625 | else |
ba2f3ec8 | 1626 | RET_GATHER(r, generator_enable_remount_fs_service(arg_dest)); |
e48fdd84 | 1627 | } |
6b1dc2bd | 1628 | |
ba2f3ec8 | 1629 | RET_GATHER(r, add_mounts_from_cmdline()); |
55365b0a | 1630 | |
ba2f3ec8 | 1631 | RET_GATHER(r, add_mounts_from_creds(/* prefix_sysroot = */ false)); |
6ac62485 | 1632 | |
ba2f3ec8 MY |
1633 | if (in_initrd()) |
1634 | RET_GATHER(r, add_mounts_from_creds(/* prefix_sysroot = */ true)); | |
dfd10549 | 1635 | |
ba2f3ec8 | 1636 | return r; |
6b1dc2bd | 1637 | } |
a4ef3e4d | 1638 | |
028a981c ZJS |
1639 | static int run(int argc, char **argv) { |
1640 | arg_sysroot_check = invoked_as(argv, "systemd-sysroot-fstab-check"); | |
1641 | ||
1642 | if (arg_sysroot_check) { | |
1643 | /* Run as in systemd-sysroot-fstab-check mode */ | |
1644 | log_setup(); | |
1645 | ||
1646 | if (strv_length(argv) > 1) | |
1647 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1648 | "This program takes no arguments."); | |
1649 | if (!in_initrd()) | |
1650 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1651 | "This program is only useful in the initrd."); | |
1652 | } else { | |
1653 | /* Run in generator mode */ | |
1654 | log_setup_generator(); | |
1655 | ||
1656 | if (!IN_SET(strv_length(argv), 2, 4)) | |
1657 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1658 | "This program takes one or three arguments."); | |
1659 | ||
1660 | arg_dest = ASSERT_PTR(argv[1]); | |
1661 | arg_dest_late = ASSERT_PTR(argv[argc > 3 ? 3 : 1]); | |
1662 | } | |
1663 | ||
1664 | return run_generator(); | |
1665 | } | |
1666 | ||
1667 | DEFINE_MAIN_FUNCTION(run); |