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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" |
f4351959 | 8 | #include "chase-symlinks.h" |
3ffd4af2 | 9 | #include "fd-util.h" |
0d39fa9c | 10 | #include "fileio.h" |
d15d0333 | 11 | #include "fstab-util.h" |
07630cea | 12 | #include "generator.h" |
77b8e92d | 13 | #include "in-addr-util.h" |
07630cea | 14 | #include "log.h" |
a4ef3e4d | 15 | #include "main-func.h" |
07630cea | 16 | #include "mkdir.h" |
6b1dc2bd | 17 | #include "mount-setup.h" |
4349cd7c | 18 | #include "mount-util.h" |
049af8ad | 19 | #include "mountpoint-util.h" |
6bedfcbb | 20 | #include "parse-util.h" |
07630cea | 21 | #include "path-util.h" |
4e731273 | 22 | #include "proc-cmdline.h" |
6b1dc2bd | 23 | #include "special.h" |
98bad05e | 24 | #include "specifier.h" |
8fcde012 | 25 | #include "stat-util.h" |
07630cea | 26 | #include "string-util.h" |
059cb385 | 27 | #include "strv.h" |
07630cea LP |
28 | #include "unit-name.h" |
29 | #include "util.h" | |
689aede8 | 30 | #include "virt.h" |
91214a37 | 31 | #include "volatile-util.h" |
6b1dc2bd | 32 | |
d2194e15 LP |
33 | typedef enum MountPointFlags { |
34 | MOUNT_NOAUTO = 1 << 0, | |
35 | MOUNT_NOFAIL = 1 << 1, | |
36 | MOUNT_AUTOMOUNT = 1 << 2, | |
37 | MOUNT_MAKEFS = 1 << 3, | |
38 | MOUNT_GROWFS = 1 << 4, | |
39 | MOUNT_RW_ONLY = 1 << 5, | |
40 | } MountPointFlags; | |
4191418b | 41 | |
7a44c7e3 ZJS |
42 | static const char *arg_dest = NULL; |
43 | static const char *arg_dest_late = NULL; | |
e48fdd84 | 44 | static bool arg_fstab_enabled = true; |
567a5307 | 45 | static bool arg_swap_enabled = true; |
6db615c1 LP |
46 | static char *arg_root_what = NULL; |
47 | static char *arg_root_fstype = NULL; | |
48 | static char *arg_root_options = NULL; | |
2f3dfc6f | 49 | static char *arg_root_hash = NULL; |
6db615c1 | 50 | static int arg_root_rw = -1; |
9f103625 TH |
51 | static char *arg_usr_what = NULL; |
52 | static char *arg_usr_fstype = NULL; | |
53 | static char *arg_usr_options = NULL; | |
c1b9e3df | 54 | static char *arg_usr_hash = NULL; |
91214a37 | 55 | static VolatileMode arg_volatile_mode = _VOLATILE_MODE_INVALID; |
6b1dc2bd | 56 | |
a4ef3e4d YW |
57 | STATIC_DESTRUCTOR_REGISTER(arg_root_what, freep); |
58 | STATIC_DESTRUCTOR_REGISTER(arg_root_fstype, freep); | |
59 | STATIC_DESTRUCTOR_REGISTER(arg_root_options, freep); | |
60 | STATIC_DESTRUCTOR_REGISTER(arg_root_hash, freep); | |
61 | STATIC_DESTRUCTOR_REGISTER(arg_usr_what, freep); | |
62 | STATIC_DESTRUCTOR_REGISTER(arg_usr_fstype, freep); | |
63 | STATIC_DESTRUCTOR_REGISTER(arg_usr_options, freep); | |
c1b9e3df | 64 | STATIC_DESTRUCTOR_REGISTER(arg_usr_hash, freep); |
a4ef3e4d | 65 | |
d5cc4be2 LP |
66 | static int write_options(FILE *f, const char *options) { |
67 | _cleanup_free_ char *o = NULL; | |
68 | ||
69 | if (isempty(options)) | |
70 | return 0; | |
71 | ||
72 | if (streq(options, "defaults")) | |
73 | return 0; | |
74 | ||
98bad05e | 75 | o = specifier_escape(options); |
d5cc4be2 LP |
76 | if (!o) |
77 | return log_oom(); | |
78 | ||
79 | fprintf(f, "Options=%s\n", o); | |
80 | return 1; | |
81 | } | |
82 | ||
19d0833b LP |
83 | static int write_what(FILE *f, const char *what) { |
84 | _cleanup_free_ char *w = NULL; | |
85 | ||
98bad05e | 86 | w = specifier_escape(what); |
19d0833b LP |
87 | if (!w) |
88 | return log_oom(); | |
89 | ||
90 | fprintf(f, "What=%s\n", w); | |
91 | return 1; | |
92 | } | |
93 | ||
5607d856 ZJS |
94 | static int add_swap( |
95 | const char *what, | |
96 | struct mntent *me, | |
d2194e15 | 97 | MountPointFlags flags) { |
5607d856 | 98 | |
fb883e75 | 99 | _cleanup_free_ char *name = NULL; |
7fd1b19b | 100 | _cleanup_fclose_ FILE *f = NULL; |
bf1d7ba7 | 101 | int r; |
6b1dc2bd LP |
102 | |
103 | assert(what); | |
104 | assert(me); | |
105 | ||
567a5307 | 106 | if (!arg_swap_enabled) { |
107 | log_info("Swap unit generation disabled on kernel command line, ignoring fstab swap entry for %s.", what); | |
108 | return 0; | |
109 | } | |
110 | ||
00b4ffde LP |
111 | if (access("/proc/swaps", F_OK) < 0) { |
112 | log_info("Swap not supported, ignoring fstab swap entry for %s.", what); | |
113 | return 0; | |
114 | } | |
115 | ||
75f86906 | 116 | if (detect_container() > 0) { |
689aede8 LP |
117 | log_info("Running in a container, ignoring fstab swap entry for %s.", what); |
118 | return 0; | |
119 | } | |
120 | ||
7410616c LP |
121 | r = unit_name_from_path(what, ".swap", &name); |
122 | if (r < 0) | |
123 | return log_error_errno(r, "Failed to generate unit name: %m"); | |
6b1dc2bd | 124 | |
ed4ad488 | 125 | r = generator_open_unit_file(arg_dest, fstab_path(), name, &f); |
fb883e75 ZJS |
126 | if (r < 0) |
127 | return r; | |
0d536673 | 128 | |
ed4ad488 ZJS |
129 | fprintf(f, |
130 | "[Unit]\n" | |
a7e88558 LP |
131 | "Documentation=man:fstab(5) man:systemd-fstab-generator(8)\n" |
132 | "SourcePath=%s\n", | |
ed4ad488 | 133 | fstab_path()); |
19d0833b | 134 | |
a7e88558 LP |
135 | r = generator_write_blockdev_dependency(f, what); |
136 | if (r < 0) | |
137 | return r; | |
138 | ||
139 | fprintf(f, | |
140 | "\n" | |
141 | "[Swap]\n"); | |
142 | ||
19d0833b LP |
143 | r = write_what(f, what); |
144 | if (r < 0) | |
145 | return r; | |
6b1dc2bd | 146 | |
d5cc4be2 LP |
147 | r = write_options(f, me->mnt_opts); |
148 | if (r < 0) | |
149 | return r; | |
6b1dc2bd | 150 | |
47cb901e | 151 | r = fflush_and_check(f); |
23bbb0de | 152 | if (r < 0) |
fb883e75 | 153 | return log_error_errno(r, "Failed to write unit file %s: %m", name); |
6b1dc2bd | 154 | |
b3208b66 | 155 | /* use what as where, to have a nicer error message */ |
bf1d7ba7 | 156 | r = generator_write_timeouts(arg_dest, what, what, me->mnt_opts, NULL); |
b3208b66 ZJS |
157 | if (r < 0) |
158 | return r; | |
159 | ||
d2194e15 | 160 | if (flags & MOUNT_MAKEFS) { |
da495a03 ZJS |
161 | r = generator_hook_up_mkswap(arg_dest, what); |
162 | if (r < 0) | |
163 | return r; | |
164 | } | |
165 | ||
d2194e15 | 166 | if (flags & MOUNT_GROWFS) |
7f2806d5 ZJS |
167 | /* TODO: swap devices must be wiped and recreated */ |
168 | log_warning("%s: growing swap devices is currently unsupported.", what); | |
169 | ||
d2194e15 | 170 | if (!(flags & MOUNT_NOAUTO)) { |
630d30d3 | 171 | r = generator_add_symlink(arg_dest, SPECIAL_SWAP_TARGET, |
d2194e15 | 172 | (flags & MOUNT_NOFAIL) ? "wants" : "requires", name); |
630d30d3 ZJS |
173 | if (r < 0) |
174 | return r; | |
4e82fe52 TG |
175 | } |
176 | ||
d0aa9ce5 | 177 | return 0; |
6b1dc2bd LP |
178 | } |
179 | ||
6b1dc2bd LP |
180 | static bool mount_is_network(struct mntent *me) { |
181 | assert(me); | |
182 | ||
b9f111b9 ZJS |
183 | return fstab_test_option(me->mnt_opts, "_netdev\0") || |
184 | fstype_is_network(me->mnt_type); | |
6b1dc2bd LP |
185 | } |
186 | ||
3d22d1ab TG |
187 | static bool mount_in_initrd(struct mntent *me) { |
188 | assert(me); | |
189 | ||
b9f111b9 ZJS |
190 | return fstab_test_option(me->mnt_opts, "x-initrd.mount\0") || |
191 | streq(me->mnt_dir, "/usr"); | |
3d22d1ab TG |
192 | } |
193 | ||
33a4c983 LP |
194 | static int write_timeout( |
195 | FILE *f, | |
196 | const char *where, | |
197 | const char *opts, | |
198 | const char *filter, | |
199 | const char *variable) { | |
200 | ||
deb0a77c | 201 | _cleanup_free_ char *timeout = NULL; |
deb0a77c MO |
202 | usec_t u; |
203 | int r; | |
204 | ||
ff0c31bc | 205 | r = fstab_filter_options(opts, filter, NULL, &timeout, NULL, NULL); |
deb0a77c MO |
206 | if (r < 0) |
207 | return log_warning_errno(r, "Failed to parse options: %m"); | |
208 | if (r == 0) | |
209 | return 0; | |
210 | ||
0004f698 | 211 | r = parse_sec_fix_0(timeout, &u); |
deb0a77c MO |
212 | if (r < 0) { |
213 | log_warning("Failed to parse timeout for %s, ignoring: %s", where, timeout); | |
214 | return 0; | |
215 | } | |
216 | ||
5291f26d | 217 | fprintf(f, "%s=%s\n", variable, FORMAT_TIMESPAN(u, 0)); |
deb0a77c MO |
218 | |
219 | return 0; | |
220 | } | |
2e852276 | 221 | |
110773f6 CH |
222 | static int write_idle_timeout(FILE *f, const char *where, const char *opts) { |
223 | return write_timeout(f, where, opts, | |
224 | "x-systemd.idle-timeout\0", "TimeoutIdleSec"); | |
225 | } | |
226 | ||
227 | static int write_mount_timeout(FILE *f, const char *where, const char *opts) { | |
228 | return write_timeout(f, where, opts, | |
229 | "x-systemd.mount-timeout\0", "TimeoutSec"); | |
230 | } | |
231 | ||
33a4c983 LP |
232 | static int write_dependency( |
233 | FILE *f, | |
234 | const char *opts, | |
235 | const char *filter, | |
236 | const char *format) { | |
237 | ||
3519d230 KZ |
238 | _cleanup_strv_free_ char **names = NULL, **units = NULL; |
239 | _cleanup_free_ char *res = NULL; | |
240 | char **s; | |
241 | int r; | |
242 | ||
243 | assert(f); | |
244 | assert(opts); | |
245 | ||
d6cef552 | 246 | r = fstab_filter_options(opts, filter, NULL, NULL, &names, NULL); |
3519d230 KZ |
247 | if (r < 0) |
248 | return log_warning_errno(r, "Failed to parse options: %m"); | |
249 | if (r == 0) | |
250 | return 0; | |
251 | ||
252 | STRV_FOREACH(s, names) { | |
253 | char *x; | |
254 | ||
df7c4eb6 | 255 | r = unit_name_mangle_with_suffix(*s, "as dependency", 0, ".mount", &x); |
3519d230 KZ |
256 | if (r < 0) |
257 | return log_error_errno(r, "Failed to generate unit name: %m"); | |
33a4c983 | 258 | |
3519d230 KZ |
259 | r = strv_consume(&units, x); |
260 | if (r < 0) | |
261 | return log_oom(); | |
262 | } | |
263 | ||
264 | if (units) { | |
265 | res = strv_join(units, " "); | |
266 | if (!res) | |
267 | return log_oom(); | |
56e577c6 LP |
268 | |
269 | DISABLE_WARNING_FORMAT_NONLITERAL; | |
ae325185 | 270 | fprintf(f, format, res); |
56e577c6 | 271 | REENABLE_WARNING; |
3519d230 KZ |
272 | } |
273 | ||
274 | return 0; | |
275 | } | |
276 | ||
ae325185 | 277 | static int write_after(FILE *f, const char *opts) { |
33a4c983 | 278 | return write_dependency(f, opts, |
d6cef552 | 279 | "x-systemd.after\0", "After=%1$s\n"); |
ae325185 RB |
280 | } |
281 | ||
282 | static int write_requires_after(FILE *f, const char *opts) { | |
283 | return write_dependency(f, opts, | |
d6cef552 | 284 | "x-systemd.requires\0", "After=%1$s\nRequires=%1$s\n"); |
ae325185 RB |
285 | } |
286 | ||
287 | static int write_before(FILE *f, const char *opts) { | |
288 | return write_dependency(f, opts, | |
d6cef552 | 289 | "x-systemd.before\0", "Before=%1$s\n"); |
ae325185 RB |
290 | } |
291 | ||
3519d230 | 292 | static int write_requires_mounts_for(FILE *f, const char *opts) { |
98bad05e | 293 | _cleanup_strv_free_ char **paths = NULL, **paths_escaped = NULL; |
3519d230 KZ |
294 | _cleanup_free_ char *res = NULL; |
295 | int r; | |
296 | ||
297 | assert(f); | |
298 | assert(opts); | |
299 | ||
d6cef552 | 300 | r = fstab_filter_options(opts, "x-systemd.requires-mounts-for\0", NULL, NULL, &paths, NULL); |
3519d230 KZ |
301 | if (r < 0) |
302 | return log_warning_errno(r, "Failed to parse options: %m"); | |
303 | if (r == 0) | |
304 | return 0; | |
305 | ||
98bad05e LP |
306 | r = specifier_escape_strv(paths, &paths_escaped); |
307 | if (r < 0) | |
308 | return log_error_errno(r, "Failed to escape paths: %m"); | |
309 | ||
310 | res = strv_join(paths_escaped, " "); | |
3519d230 KZ |
311 | if (!res) |
312 | return log_oom(); | |
313 | ||
314 | fprintf(f, "RequiresMountsFor=%s\n", res); | |
315 | ||
316 | return 0; | |
317 | } | |
318 | ||
6371e69b FB |
319 | static int write_extra_dependencies(FILE *f, const char *opts) { |
320 | int r; | |
321 | ||
322 | assert(f); | |
323 | ||
324 | if (opts) { | |
325 | r = write_after(f, opts); | |
326 | if (r < 0) | |
327 | return r; | |
328 | r = write_requires_after(f, opts); | |
329 | if (r < 0) | |
330 | return r; | |
331 | r = write_before(f, opts); | |
332 | if (r < 0) | |
333 | return r; | |
334 | r = write_requires_mounts_for(f, opts); | |
335 | if (r < 0) | |
336 | return r; | |
337 | } | |
338 | ||
339 | return 0; | |
340 | } | |
341 | ||
e8d2f6cd | 342 | static int add_mount( |
91214a37 | 343 | const char *dest, |
e8d2f6cd LP |
344 | const char *what, |
345 | const char *where, | |
634735b5 | 346 | const char *original_where, |
6db615c1 | 347 | const char *fstype, |
e8d2f6cd LP |
348 | const char *opts, |
349 | int passno, | |
d2194e15 | 350 | MountPointFlags flags, |
e8d2f6cd | 351 | const char *post, |
e8d2f6cd | 352 | const char *source) { |
e48fdd84 | 353 | |
7fd1b19b | 354 | _cleanup_free_ char |
da495a03 | 355 | *name = NULL, |
fb883e75 | 356 | *automount_name = NULL, |
98bad05e LP |
357 | *filtered = NULL, |
358 | *where_escaped = NULL; | |
be02c1cf | 359 | _cleanup_strv_free_ char **wanted_by = NULL, **required_by = NULL; |
7fd1b19b | 360 | _cleanup_fclose_ FILE *f = NULL; |
94192cda | 361 | int r; |
6b1dc2bd LP |
362 | |
363 | assert(what); | |
364 | assert(where); | |
5e398e54 | 365 | assert(opts); |
0d3d3be1 | 366 | assert(post); |
5e398e54 | 367 | assert(source); |
6b1dc2bd | 368 | |
6db615c1 | 369 | if (streq_ptr(fstype, "autofs")) |
6b1dc2bd LP |
370 | return 0; |
371 | ||
372 | if (!is_path(where)) { | |
373 | log_warning("Mount point %s is not a valid path, ignoring.", where); | |
374 | return 0; | |
375 | } | |
376 | ||
377 | if (mount_point_is_api(where) || | |
378 | mount_point_ignore(where)) | |
379 | return 0; | |
380 | ||
d6cef552 | 381 | r = fstab_filter_options(opts, "x-systemd.wanted-by\0", NULL, NULL, &wanted_by, NULL); |
be02c1cf AR |
382 | if (r < 0) |
383 | return r; | |
384 | ||
d6cef552 | 385 | r = fstab_filter_options(opts, "x-systemd.required-by\0", NULL, NULL, &required_by, NULL); |
be02c1cf AR |
386 | if (r < 0) |
387 | return r; | |
388 | ||
e48fdd84 | 389 | if (path_equal(where, "/")) { |
d2194e15 LP |
390 | if (flags & MOUNT_NOAUTO) |
391 | log_warning("Ignoring \"noauto\" option for root device"); | |
392 | if (flags & MOUNT_NOFAIL) | |
393 | log_warning("Ignoring \"nofail\" option for root device"); | |
394 | if (flags & MOUNT_AUTOMOUNT) | |
395 | log_warning("Ignoring \"automount\" option for root device"); | |
be02c1cf | 396 | if (!strv_isempty(wanted_by)) |
d2194e15 | 397 | log_warning("Ignoring \"x-systemd.wanted-by=\" option for root device"); |
be02c1cf | 398 | if (!strv_isempty(required_by)) |
d2194e15 | 399 | log_warning("Ignoring \"x-systemd.required-by=\" option for root device"); |
2e852276 | 400 | |
be02c1cf AR |
401 | required_by = strv_free(required_by); |
402 | wanted_by = strv_free(wanted_by); | |
d2194e15 | 403 | SET_FLAG(flags, MOUNT_NOAUTO | MOUNT_NOFAIL | MOUNT_AUTOMOUNT, false); |
e48fdd84 LP |
404 | } |
405 | ||
7410616c LP |
406 | r = unit_name_from_path(where, ".mount", &name); |
407 | if (r < 0) | |
408 | return log_error_errno(r, "Failed to generate unit name: %m"); | |
6b1dc2bd | 409 | |
ed4ad488 | 410 | r = generator_open_unit_file(dest, fstab_path(), name, &f); |
fb883e75 ZJS |
411 | if (r < 0) |
412 | return r; | |
0d536673 | 413 | |
5e398e54 | 414 | fprintf(f, |
c3834f9b | 415 | "[Unit]\n" |
a7e88558 LP |
416 | "Documentation=man:fstab(5) man:systemd-fstab-generator(8)\n" |
417 | "SourcePath=%s\n", | |
c3834f9b | 418 | source); |
6b1dc2bd | 419 | |
d2194e15 | 420 | if (STRPTR_IN_SET(fstype, "nfs", "nfs4") && !(flags & MOUNT_AUTOMOUNT) && |
65e1dee7 N |
421 | fstab_test_yes_no_option(opts, "bg\0" "fg\0")) { |
422 | /* The default retry timeout that mount.nfs uses for 'bg' mounts | |
423 | * is 10000 minutes, where as it uses 2 minutes for 'fg' mounts. | |
424 | * As we are making 'bg' mounts look like an 'fg' mount to | |
425 | * mount.nfs (so systemd can manage the job-control aspects of 'bg'), | |
426 | * we need to explicitly preserve that default, and also ensure | |
427 | * the systemd mount-timeout doesn't interfere. | |
5a12d1ca | 428 | * By placing these options first, they can be overridden by |
65e1dee7 | 429 | * settings in /etc/fstab. */ |
e66d2eee | 430 | opts = strjoina("x-systemd.mount-timeout=infinity,retry=10000,nofail,", opts, ",fg"); |
d2194e15 | 431 | SET_FLAG(flags, MOUNT_NOFAIL, true); |
65e1dee7 N |
432 | } |
433 | ||
6371e69b FB |
434 | r = write_extra_dependencies(f, opts); |
435 | if (r < 0) | |
436 | return r; | |
3519d230 | 437 | |
fa138f5e LP |
438 | /* Order the mount unit we generate relative to the post unit, so that DefaultDependencies= on the |
439 | * target unit won't affect us. */ | |
3b78db59 | 440 | if (post && !FLAGS_SET(flags, MOUNT_NOFAIL)) |
fa138f5e LP |
441 | fprintf(f, "Before=%s\n", post); |
442 | ||
e48fdd84 | 443 | if (passno != 0) { |
91214a37 | 444 | r = generator_write_fsck_deps(f, dest, what, where, fstype); |
e48fdd84 LP |
445 | if (r < 0) |
446 | return r; | |
447 | } | |
64e70e4b | 448 | |
a7e88558 LP |
449 | r = generator_write_blockdev_dependency(f, what); |
450 | if (r < 0) | |
451 | return r; | |
452 | ||
453 | fprintf(f, | |
454 | "\n" | |
455 | "[Mount]\n"); | |
456 | ||
b2efed52 ZJS |
457 | r = write_what(f, what); |
458 | if (r < 0) | |
459 | return r; | |
460 | ||
634735b5 CW |
461 | if (original_where) |
462 | fprintf(f, "# Canonicalized from %s\n", original_where); | |
98bad05e LP |
463 | |
464 | where_escaped = specifier_escape(where); | |
465 | if (!where_escaped) | |
466 | return log_oom(); | |
467 | fprintf(f, "Where=%s\n", where_escaped); | |
6db615c1 | 468 | |
98bad05e | 469 | if (!isempty(fstype) && !streq(fstype, "auto")) { |
c2b2df60 | 470 | _cleanup_free_ char *t = NULL; |
98bad05e LP |
471 | |
472 | t = specifier_escape(fstype); | |
473 | if (!t) | |
474 | return -ENOMEM; | |
475 | ||
476 | fprintf(f, "Type=%s\n", t); | |
477 | } | |
6b1dc2bd | 478 | |
91214a37 | 479 | r = generator_write_timeouts(dest, what, where, opts, &filtered); |
29686440 ZJS |
480 | if (r < 0) |
481 | return r; | |
482 | ||
4195077a MK |
483 | r = generator_write_device_deps(dest, what, where, opts); |
484 | if (r < 0) | |
485 | return r; | |
486 | ||
110773f6 CH |
487 | r = write_mount_timeout(f, where, opts); |
488 | if (r < 0) | |
489 | return r; | |
490 | ||
d5cc4be2 LP |
491 | r = write_options(f, filtered); |
492 | if (r < 0) | |
493 | return r; | |
5e398e54 | 494 | |
d2194e15 | 495 | if (flags & MOUNT_RW_ONLY) |
f42aa416 MH |
496 | fprintf(f, "ReadWriteOnly=yes\n"); |
497 | ||
4652c56c ZJS |
498 | r = fflush_and_check(f); |
499 | if (r < 0) | |
fb883e75 | 500 | return log_error_errno(r, "Failed to write unit file %s: %m", name); |
6b1dc2bd | 501 | |
d2194e15 | 502 | if (flags & MOUNT_MAKEFS) { |
da495a03 ZJS |
503 | r = generator_hook_up_mkfs(dest, what, where, fstype); |
504 | if (r < 0) | |
505 | return r; | |
506 | } | |
507 | ||
d2194e15 | 508 | if (flags & MOUNT_GROWFS) { |
7f2806d5 ZJS |
509 | r = generator_hook_up_growfs(dest, where, post); |
510 | if (r < 0) | |
511 | return r; | |
512 | } | |
513 | ||
d2194e15 LP |
514 | if (!FLAGS_SET(flags, MOUNT_AUTOMOUNT)) { |
515 | if (!FLAGS_SET(flags, MOUNT_NOAUTO) && strv_isempty(wanted_by) && strv_isempty(required_by)) { | |
be02c1cf | 516 | r = generator_add_symlink(dest, post, |
d2194e15 | 517 | (flags & MOUNT_NOFAIL) ? "wants" : "requires", name); |
be02c1cf AR |
518 | if (r < 0) |
519 | return r; | |
520 | } else { | |
521 | char **s; | |
522 | ||
523 | STRV_FOREACH(s, wanted_by) { | |
524 | r = generator_add_symlink(dest, *s, "wants", name); | |
525 | if (r < 0) | |
526 | return r; | |
527 | } | |
528 | ||
529 | STRV_FOREACH(s, required_by) { | |
530 | r = generator_add_symlink(dest, *s, "requires", name); | |
531 | if (r < 0) | |
532 | return r; | |
533 | } | |
534 | } | |
535 | } else { | |
7410616c LP |
536 | r = unit_name_from_path(where, ".automount", &automount_name); |
537 | if (r < 0) | |
538 | return log_error_errno(r, "Failed to generate unit name: %m"); | |
6b1dc2bd | 539 | |
8a7033ac | 540 | f = safe_fclose(f); |
6b1dc2bd | 541 | |
ed4ad488 | 542 | r = generator_open_unit_file(dest, fstab_path(), automount_name, &f); |
fb883e75 ZJS |
543 | if (r < 0) |
544 | return r; | |
0d536673 | 545 | |
6b1dc2bd | 546 | fprintf(f, |
6b1dc2bd | 547 | "[Unit]\n" |
c3834f9b LP |
548 | "SourcePath=%s\n" |
549 | "Documentation=man:fstab(5) man:systemd-fstab-generator(8)\n", | |
700e07ff HH |
550 | source); |
551 | ||
700e07ff | 552 | fprintf(f, |
bd10a84b | 553 | "\n" |
6b1dc2bd LP |
554 | "[Automount]\n" |
555 | "Where=%s\n", | |
98bad05e | 556 | where_escaped); |
6b1dc2bd | 557 | |
336b5c61 | 558 | r = write_idle_timeout(f, where, opts); |
deb0a77c MO |
559 | if (r < 0) |
560 | return r; | |
561 | ||
4652c56c ZJS |
562 | r = fflush_and_check(f); |
563 | if (r < 0) | |
fb883e75 | 564 | return log_error_errno(r, "Failed to write unit file %s: %m", automount_name); |
6b1dc2bd | 565 | |
630d30d3 | 566 | r = generator_add_symlink(dest, post, |
d2194e15 | 567 | (flags & MOUNT_NOFAIL) ? "wants" : "requires", automount_name); |
630d30d3 ZJS |
568 | if (r < 0) |
569 | return r; | |
6b1dc2bd LP |
570 | } |
571 | ||
d0aa9ce5 | 572 | return 0; |
6b1dc2bd LP |
573 | } |
574 | ||
e48fdd84 | 575 | static int parse_fstab(bool initrd) { |
6db615c1 | 576 | _cleanup_endmntent_ FILE *f = NULL; |
ed4ad488 | 577 | const char *fstab; |
6b1dc2bd | 578 | struct mntent *me; |
e48fdd84 | 579 | int r = 0; |
6b1dc2bd | 580 | |
ed4ad488 ZJS |
581 | fstab = initrd ? "/sysroot/etc/fstab" : fstab_path(); |
582 | log_debug("Parsing %s...", fstab); | |
01a0f7d0 | 583 | |
ed4ad488 | 584 | f = setmntent(fstab, "re"); |
6b1dc2bd LP |
585 | if (!f) { |
586 | if (errno == ENOENT) | |
587 | return 0; | |
588 | ||
ed4ad488 | 589 | return log_error_errno(errno, "Failed to open %s: %m", fstab); |
6b1dc2bd LP |
590 | } |
591 | ||
592 | while ((me = getmntent(f))) { | |
634735b5 | 593 | _cleanup_free_ char *where = NULL, *what = NULL, *canonical_where = NULL; |
d2194e15 LP |
594 | bool makefs, growfs, noauto, nofail; |
595 | MountPointFlags flags; | |
6b1dc2bd LP |
596 | int k; |
597 | ||
3d22d1ab TG |
598 | if (initrd && !mount_in_initrd(me)) |
599 | continue; | |
600 | ||
6b1dc2bd | 601 | what = fstab_node_to_udev_node(me->mnt_fsname); |
e48fdd84 LP |
602 | if (!what) |
603 | return log_oom(); | |
604 | ||
18f0eaaf YW |
605 | if (path_is_read_only_fs("/sys") > 0) { |
606 | if (streq(what, "sysfs")) { | |
607 | log_info("Running in a container, ignoring fstab entry for %s.", what); | |
608 | continue; | |
609 | } | |
610 | ||
611 | if (is_device_path(what)) { | |
612 | log_info("Running in a container, ignoring fstab device entry for %s.", what); | |
613 | continue; | |
614 | } | |
689aede8 LP |
615 | } |
616 | ||
98eda38a | 617 | where = strdup(me->mnt_dir); |
e48fdd84 | 618 | if (!where) |
5862d652 | 619 | return log_oom(); |
6b1dc2bd | 620 | |
634735b5 | 621 | if (is_path(where)) { |
4ff361cc | 622 | path_simplify(where); |
f1a2c758 | 623 | |
634735b5 CW |
624 | /* Follow symlinks here; see 5261ba901845c084de5a8fd06500ed09bfb0bd80 which makes sense for |
625 | * mount units, but causes problems since it historically worked to have symlinks in e.g. | |
626 | * /etc/fstab. So we canonicalize here. Note that we use CHASE_NONEXISTENT to handle the case | |
627 | * where a symlink refers to another mount target; this works assuming the sub-mountpoint | |
f1a2c758 | 628 | * target is the final directory. */ |
1677b88d | 629 | k = chase_symlinks(where, initrd ? "/sysroot" : NULL, |
634735b5 | 630 | CHASE_PREFIX_ROOT | CHASE_NONEXISTENT, |
a5648b80 | 631 | &canonical_where, NULL); |
1677b88d ZJS |
632 | if (k < 0) /* If we can't canonicalize we continue on as if it wasn't a symlink */ |
633 | log_debug_errno(k, "Failed to read symlink target for %s, ignoring: %m", where); | |
f1a2c758 LP |
634 | else if (streq(canonical_where, where)) /* If it was fully canonicalized, suppress the change */ |
635 | canonical_where = mfree(canonical_where); | |
636 | else | |
637 | log_debug("Canonicalized what=%s where=%s to %s", what, where, canonical_where); | |
634735b5 | 638 | } |
6b1dc2bd | 639 | |
da495a03 | 640 | makefs = fstab_test_option(me->mnt_opts, "x-systemd.makefs\0"); |
7f2806d5 | 641 | growfs = fstab_test_option(me->mnt_opts, "x-systemd.growfs\0"); |
b9f111b9 ZJS |
642 | noauto = fstab_test_yes_no_option(me->mnt_opts, "noauto\0" "auto\0"); |
643 | nofail = fstab_test_yes_no_option(me->mnt_opts, "nofail\0" "fail\0"); | |
f1a2c758 | 644 | |
ac1d4c79 | 645 | log_debug("Found entry what=%s where=%s type=%s makefs=%s growfs=%s noauto=%s nofail=%s", |
5607d856 | 646 | what, where, me->mnt_type, |
ac1d4c79 | 647 | yes_no(makefs), yes_no(growfs), |
5607d856 | 648 | yes_no(noauto), yes_no(nofail)); |
6b1dc2bd | 649 | |
d2194e15 LP |
650 | flags = makefs * MOUNT_MAKEFS | |
651 | growfs * MOUNT_GROWFS | | |
652 | noauto * MOUNT_NOAUTO | | |
653 | nofail * MOUNT_NOFAIL; | |
654 | ||
6b1dc2bd | 655 | if (streq(me->mnt_type, "swap")) |
d2194e15 | 656 | k = add_swap(what, me, flags); |
5e398e54 | 657 | else { |
d2194e15 | 658 | bool rw_only, automount; |
80c3b720 | 659 | const char *post; |
5e398e54 | 660 | |
d2194e15 | 661 | rw_only = fstab_test_option(me->mnt_opts, "x-systemd.rw-only\0"); |
b9f111b9 ZJS |
662 | automount = fstab_test_option(me->mnt_opts, |
663 | "comment=systemd.automount\0" | |
664 | "x-systemd.automount\0"); | |
d2194e15 LP |
665 | |
666 | flags |= rw_only * MOUNT_RW_ONLY | | |
667 | automount * MOUNT_AUTOMOUNT; | |
668 | ||
e48fdd84 | 669 | if (initrd) |
700e07ff | 670 | post = SPECIAL_INITRD_FS_TARGET; |
e48fdd84 | 671 | else if (mount_is_network(me)) |
0c17fbce | 672 | post = SPECIAL_REMOTE_FS_TARGET; |
e48fdd84 | 673 | else |
0c17fbce | 674 | post = SPECIAL_LOCAL_FS_TARGET; |
5e398e54 | 675 | |
91214a37 LP |
676 | k = add_mount(arg_dest, |
677 | what, | |
634735b5 CW |
678 | canonical_where ?: where, |
679 | canonical_where ? where: NULL, | |
6db615c1 LP |
680 | me->mnt_type, |
681 | me->mnt_opts, | |
682 | me->mnt_passno, | |
d2194e15 | 683 | flags, |
6db615c1 | 684 | post, |
ed4ad488 | 685 | fstab); |
5e398e54 | 686 | } |
6b1dc2bd | 687 | |
7f2806d5 | 688 | if (r >= 0 && k < 0) |
6b1dc2bd LP |
689 | r = k; |
690 | } | |
691 | ||
6b1dc2bd LP |
692 | return r; |
693 | } | |
694 | ||
77b8e92d YW |
695 | static int sysroot_is_nfsroot(void) { |
696 | union in_addr_union u; | |
697 | const char *sep, *a; | |
698 | int r; | |
699 | ||
700 | assert(arg_root_what); | |
701 | ||
702 | /* From dracut.cmdline(7). | |
703 | * | |
704 | * root=[<server-ip>:]<root-dir>[:<nfs-options>] | |
705 | * root=nfs:[<server-ip>:]<root-dir>[:<nfs-options>], | |
706 | * root=nfs4:[<server-ip>:]<root-dir>[:<nfs-options>], | |
707 | * root={dhcp|dhcp6} | |
708 | * | |
709 | * mount nfs share from <server-ip>:/<root-dir>, if no server-ip is given, use dhcp next_server. | |
710 | * If server-ip is an IPv6 address it has to be put in brackets, e.g. [2001:DB8::1]. NFS options | |
711 | * can be appended with the prefix ":" or "," and are separated by ",". */ | |
712 | ||
713 | if (path_equal(arg_root_what, "/dev/nfs") || | |
714 | STR_IN_SET(arg_root_what, "dhcp", "dhcp6") || | |
715 | STARTSWITH_SET(arg_root_what, "nfs:", "nfs4:")) | |
716 | return true; | |
717 | ||
718 | /* IPv6 address */ | |
719 | if (arg_root_what[0] == '[') { | |
720 | sep = strchr(arg_root_what + 1, ']'); | |
721 | if (!sep) | |
722 | return -EINVAL; | |
723 | ||
724 | a = strndupa(arg_root_what + 1, sep - arg_root_what - 1); | |
725 | ||
726 | r = in_addr_from_string(AF_INET6, a, &u); | |
727 | if (r < 0) | |
728 | return r; | |
729 | ||
730 | return true; | |
731 | } | |
732 | ||
733 | /* IPv4 address */ | |
734 | sep = strchr(arg_root_what, ':'); | |
735 | if (sep) { | |
736 | a = strndupa(arg_root_what, sep - arg_root_what); | |
737 | ||
738 | if (in_addr_from_string(AF_INET, a, &u) >= 0) | |
739 | return true; | |
740 | } | |
741 | ||
742 | /* root directory without address */ | |
743 | return path_is_absolute(arg_root_what) && !path_startswith(arg_root_what, "/dev"); | |
744 | } | |
745 | ||
2e852276 | 746 | static int add_sysroot_mount(void) { |
75a59316 | 747 | _cleanup_free_ char *what = NULL; |
725ad3b0 LP |
748 | const char *opts, *fstype; |
749 | bool default_rw; | |
7163e1ca | 750 | int r; |
5e398e54 | 751 | |
093c2cfe TH |
752 | if (isempty(arg_root_what)) { |
753 | log_debug("Could not find a root= entry on the kernel command line."); | |
754 | return 0; | |
135b5212 | 755 | } |
5e398e54 | 756 | |
138f4c69 LP |
757 | if (streq(arg_root_what, "gpt-auto")) { |
758 | /* This is handled by the gpt-auto generator */ | |
759 | log_debug("Skipping root directory handling, as gpt-auto was requested."); | |
760 | return 0; | |
761 | } | |
762 | ||
77b8e92d YW |
763 | r = sysroot_is_nfsroot(); |
764 | if (r < 0) | |
765 | log_debug_errno(r, "Failed to determine if the root directory is on NFS, assuming not: %m"); | |
766 | else if (r > 0) { | |
3ade16c9 | 767 | /* This is handled by the kernel or the initrd */ |
77b8e92d | 768 | log_debug("Skipping root directory handling, as root on NFS was requested."); |
155e1bb4 YW |
769 | return 0; |
770 | } | |
771 | ||
772 | if (startswith(arg_root_what, "cifs://")) { | |
773 | log_debug("Skipping root directory handling, as root on CIFS was requested."); | |
774 | return 0; | |
775 | } | |
776 | ||
777 | if (startswith(arg_root_what, "iscsi:")) { | |
778 | log_debug("Skipping root directory handling, as root on iSCSI was requested."); | |
779 | return 0; | |
780 | } | |
781 | ||
782 | if (startswith(arg_root_what, "live:")) { | |
783 | log_debug("Skipping root directory handling, as root on live image was requested."); | |
3ade16c9 HH |
784 | return 0; |
785 | } | |
786 | ||
725ad3b0 LP |
787 | if (streq(arg_root_what, "tmpfs")) { |
788 | /* If root=tmpfs is specified, then take this as shortcut for a writable tmpfs mount as root */ | |
789 | ||
790 | what = strdup("rootfs"); /* just a pretty name, to show up in /proc/self/mountinfo */ | |
791 | if (!what) | |
792 | return log_oom(); | |
793 | ||
5a12d1ca | 794 | fstype = arg_root_fstype ?: "tmpfs"; /* tmpfs, unless overridden */ |
725ad3b0 | 795 | |
5a12d1ca | 796 | default_rw = true; /* writable, unless overridden */; |
725ad3b0 LP |
797 | } else { |
798 | ||
799 | what = fstab_node_to_udev_node(arg_root_what); | |
800 | if (!what) | |
801 | return log_oom(); | |
802 | ||
803 | fstype = arg_root_fstype; /* if not specified explicitly, don't default to anything here */ | |
804 | ||
5a12d1ca | 805 | default_rw = false; /* read-only, unless overridden */ |
725ad3b0 | 806 | } |
093c2cfe | 807 | |
6db615c1 | 808 | if (!arg_root_options) |
725ad3b0 | 809 | opts = arg_root_rw > 0 || (arg_root_rw < 0 && default_rw) ? "rw" : "ro"; |
75a59316 | 810 | else if (arg_root_rw >= 0 || |
d15d0333 | 811 | !fstab_test_option(arg_root_options, "ro\0" "rw\0")) |
63c372cb | 812 | opts = strjoina(arg_root_options, ",", arg_root_rw > 0 ? "rw" : "ro"); |
75a59316 ZJS |
813 | else |
814 | opts = arg_root_options; | |
5e398e54 | 815 | |
e19ae92a | 816 | log_debug("Found entry what=%s where=/sysroot type=%s opts=%s", what, strna(arg_root_fstype), strempty(opts)); |
7163e1ca DD |
817 | |
818 | if (is_device_path(what)) { | |
819 | r = generator_write_initrd_root_device_deps(arg_dest, what); | |
820 | if (r < 0) | |
821 | return r; | |
822 | } | |
823 | ||
91214a37 LP |
824 | return add_mount(arg_dest, |
825 | what, | |
6db615c1 | 826 | "/sysroot", |
634735b5 | 827 | NULL, |
725ad3b0 | 828 | fstype, |
75a59316 | 829 | opts, |
f113f8e3 | 830 | is_device_path(what) ? 1 : 0, /* passno */ |
7f2806d5 | 831 | 0, /* makefs off, growfs off, noauto off, nofail off, automount off */ |
6db615c1 LP |
832 | SPECIAL_INITRD_ROOT_FS_TARGET, |
833 | "/proc/cmdline"); | |
5e398e54 TG |
834 | } |
835 | ||
2e852276 | 836 | static int add_sysroot_usr_mount(void) { |
9f103625 TH |
837 | _cleanup_free_ char *what = NULL; |
838 | const char *opts; | |
29a24ab2 LP |
839 | int r; |
840 | ||
841 | /* Returns 0 if we didn't do anything, > 0 if we either generated a unit for the /usr/ mount, or we | |
842 | * know for sure something else did */ | |
9f103625 TH |
843 | |
844 | if (!arg_usr_what && !arg_usr_fstype && !arg_usr_options) | |
845 | return 0; | |
846 | ||
847 | if (arg_root_what && !arg_usr_what) { | |
40472036 | 848 | /* Copy over the root device, in case the /usr mount just differs in a mount option (consider btrfs subvolumes) */ |
9f103625 | 849 | arg_usr_what = strdup(arg_root_what); |
9f103625 TH |
850 | if (!arg_usr_what) |
851 | return log_oom(); | |
852 | } | |
853 | ||
854 | if (arg_root_fstype && !arg_usr_fstype) { | |
855 | arg_usr_fstype = strdup(arg_root_fstype); | |
9f103625 TH |
856 | if (!arg_usr_fstype) |
857 | return log_oom(); | |
858 | } | |
859 | ||
860 | if (arg_root_options && !arg_usr_options) { | |
861 | arg_usr_options = strdup(arg_root_options); | |
9f103625 TH |
862 | if (!arg_usr_options) |
863 | return log_oom(); | |
864 | } | |
865 | ||
29a24ab2 LP |
866 | if (isempty(arg_usr_what)) { |
867 | log_debug("Could not find a usr= entry on the kernel command line."); | |
9f103625 | 868 | return 0; |
29a24ab2 LP |
869 | } |
870 | ||
871 | if (streq(arg_usr_what, "gpt-auto")) { | |
872 | /* This is handled by the gpt-auto generator */ | |
873 | log_debug("Skipping /usr/ directory handling, as gpt-auto was requested."); | |
874 | return 1; /* systemd-gpt-auto-generator will generate a unit for this, hence report that a | |
875 | * unit file is being created for the host /usr/ mount. */ | |
876 | } | |
877 | ||
878 | if (path_equal(arg_usr_what, "/dev/nfs")) { | |
879 | /* This is handled by the initrd (if at all supported, that is) */ | |
880 | log_debug("Skipping /usr/ directory handling, as /dev/nfs was requested."); | |
881 | return 1; /* As above, report that NFS code will create the unit */ | |
882 | } | |
9f103625 TH |
883 | |
884 | what = fstab_node_to_udev_node(arg_usr_what); | |
47be5f07 LP |
885 | if (!what) |
886 | return log_oom(); | |
9f103625 | 887 | |
eb580002 MM |
888 | if (!arg_usr_options) |
889 | opts = arg_root_rw > 0 ? "rw" : "ro"; | |
d15d0333 | 890 | else if (!fstab_test_option(arg_usr_options, "ro\0" "rw\0")) |
63c372cb | 891 | opts = strjoina(arg_usr_options, ",", arg_root_rw > 0 ? "rw" : "ro"); |
eb580002 MM |
892 | else |
893 | opts = arg_usr_options; | |
9f103625 | 894 | |
29a24ab2 LP |
895 | /* When mounting /usr from the initrd, we add an extra level of indirection: we first mount the /usr/ |
896 | * partition to /sysusr/usr/, and then afterwards bind mount that to /sysroot/usr/. We do this so | |
897 | * that we can cover for systems that initially only have a /usr/ around and where the root fs needs | |
898 | * to be synthesized, based on configuration included in /usr/, e.g. systemd-repart. Software like | |
899 | * this should order itself after initrd-usr-fs.target and before initrd-fs.target; and it should | |
900 | * look into both /sysusr/ and /sysroot/ for the configuration data to apply. */ | |
901 | ||
902 | log_debug("Found entry what=%s where=/sysusr/usr type=%s opts=%s", what, strna(arg_usr_fstype), strempty(opts)); | |
903 | ||
904 | r = add_mount(arg_dest, | |
905 | what, | |
906 | "/sysusr/usr", | |
907 | NULL, | |
908 | arg_usr_fstype, | |
909 | opts, | |
910 | is_device_path(what) ? 1 : 0, /* passno */ | |
911 | 0, | |
912 | SPECIAL_INITRD_USR_FS_TARGET, | |
913 | "/proc/cmdline"); | |
914 | if (r < 0) | |
915 | return r; | |
916 | ||
917 | log_debug("Synthesizing entry what=/sysusr/usr where=/sysrootr/usr opts=bind"); | |
918 | ||
919 | r = add_mount(arg_dest, | |
920 | "/sysusr/usr", | |
921 | "/sysroot/usr", | |
922 | NULL, | |
923 | NULL, | |
924 | "bind", | |
925 | 0, | |
926 | 0, | |
927 | SPECIAL_INITRD_FS_TARGET, | |
928 | "/proc/cmdline"); | |
929 | if (r < 0) | |
930 | return r; | |
931 | ||
932 | return 1; | |
933 | } | |
934 | ||
935 | static int add_sysroot_usr_mount_or_fallback(void) { | |
936 | int r; | |
937 | ||
938 | r = add_sysroot_usr_mount(); | |
939 | if (r != 0) | |
940 | return r; | |
941 | ||
942 | /* OK, so we didn't write anything out for /sysusr/usr/ nor /sysroot/usr/. In this case, let's make | |
943 | * sure that initrd-usr-fs.target is at least ordered after sysroot.mount so that services that order | |
944 | * themselves get the guarantee that /usr/ is definitely mounted somewhere. */ | |
945 | ||
946 | return generator_add_symlink( | |
947 | arg_dest, | |
948 | SPECIAL_INITRD_USR_FS_TARGET, | |
949 | "requires", | |
950 | "sysroot.mount"); | |
9f103625 TH |
951 | } |
952 | ||
91214a37 | 953 | static int add_volatile_root(void) { |
1de7f825 | 954 | |
91214a37 | 955 | /* Let's add in systemd-remount-volatile.service which will remount the root device to tmpfs if this is |
1de7f825 | 956 | * requested (or as an overlayfs), leaving only /usr from the root mount inside. */ |
91214a37 | 957 | |
1de7f825 | 958 | if (!IN_SET(arg_volatile_mode, VOLATILE_YES, VOLATILE_OVERLAY)) |
00bb366d | 959 | return 0; |
91214a37 | 960 | |
00bb366d | 961 | return generator_add_symlink(arg_dest, SPECIAL_INITRD_ROOT_FS_TARGET, "requires", |
835cf75a | 962 | SYSTEM_DATA_UNIT_DIR "/" SPECIAL_VOLATILE_ROOT_SERVICE); |
91214a37 LP |
963 | } |
964 | ||
965 | static int add_volatile_var(void) { | |
966 | ||
967 | if (arg_volatile_mode != VOLATILE_STATE) | |
968 | return 0; | |
969 | ||
970 | /* If requested, mount /var as tmpfs, but do so only if there's nothing else defined for this. */ | |
971 | ||
972 | return add_mount(arg_dest_late, | |
973 | "tmpfs", | |
974 | "/var", | |
634735b5 | 975 | NULL, |
91214a37 | 976 | "tmpfs", |
7d85383e | 977 | "mode=0755" TMPFS_LIMITS_VAR, |
91214a37 | 978 | 0, |
4191418b | 979 | 0, |
91214a37 LP |
980 | SPECIAL_LOCAL_FS_TARGET, |
981 | "/proc/cmdline"); | |
982 | } | |
983 | ||
96287a49 | 984 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
74df0fca | 985 | int r; |
94734142 | 986 | |
9f103625 TH |
987 | /* root=, usr=, usrfstype= and roofstype= may occur more than once, the last |
988 | * instance should take precedence. In the case of multiple rootflags= | |
989 | * or usrflags= the arguments should be concatenated */ | |
6db615c1 | 990 | |
1d84ad94 | 991 | if (STR_IN_SET(key, "fstab", "rd.fstab")) { |
e48fdd84 | 992 | |
1d84ad94 | 993 | r = value ? parse_boolean(value) : 1; |
141a79f4 | 994 | if (r < 0) |
059cb385 | 995 | log_warning("Failed to parse fstab switch %s. Ignoring.", value); |
141a79f4 | 996 | else |
e48fdd84 | 997 | arg_fstab_enabled = r; |
94734142 | 998 | |
1d84ad94 LP |
999 | } else if (streq(key, "root")) { |
1000 | ||
1001 | if (proc_cmdline_value_missing(key, value)) | |
1002 | return 0; | |
6db615c1 | 1003 | |
b3f9c17a | 1004 | return free_and_strdup_warn(&arg_root_what, value); |
6db615c1 | 1005 | |
1d84ad94 LP |
1006 | } else if (streq(key, "rootfstype")) { |
1007 | ||
1008 | if (proc_cmdline_value_missing(key, value)) | |
1009 | return 0; | |
6db615c1 | 1010 | |
b3f9c17a | 1011 | return free_and_strdup_warn(&arg_root_fstype, value); |
6db615c1 | 1012 | |
1d84ad94 | 1013 | } else if (streq(key, "rootflags")) { |
6db615c1 | 1014 | |
1d84ad94 LP |
1015 | if (proc_cmdline_value_missing(key, value)) |
1016 | return 0; | |
1017 | ||
c2bc710b | 1018 | if (!strextend_with_separator(&arg_root_options, ",", value)) |
6db615c1 LP |
1019 | return log_oom(); |
1020 | ||
2f3dfc6f LP |
1021 | } else if (streq(key, "roothash")) { |
1022 | ||
1023 | if (proc_cmdline_value_missing(key, value)) | |
1024 | return 0; | |
1025 | ||
b3f9c17a | 1026 | return free_and_strdup_warn(&arg_root_hash, value); |
6db615c1 | 1027 | |
1d84ad94 LP |
1028 | } else if (streq(key, "mount.usr")) { |
1029 | ||
1030 | if (proc_cmdline_value_missing(key, value)) | |
1031 | return 0; | |
9f103625 | 1032 | |
b3f9c17a | 1033 | return free_and_strdup_warn(&arg_usr_what, value); |
9f103625 | 1034 | |
1d84ad94 LP |
1035 | } else if (streq(key, "mount.usrfstype")) { |
1036 | ||
1037 | if (proc_cmdline_value_missing(key, value)) | |
1038 | return 0; | |
9f103625 | 1039 | |
b3f9c17a | 1040 | return free_and_strdup_warn(&arg_usr_fstype, value); |
9f103625 | 1041 | |
1d84ad94 | 1042 | } else if (streq(key, "mount.usrflags")) { |
9f103625 | 1043 | |
1d84ad94 LP |
1044 | if (proc_cmdline_value_missing(key, value)) |
1045 | return 0; | |
1046 | ||
c2bc710b | 1047 | if (!strextend_with_separator(&arg_usr_options, ",", value)) |
9f103625 TH |
1048 | return log_oom(); |
1049 | ||
c1b9e3df MB |
1050 | } else if (streq(key, "usrhash")) { |
1051 | ||
1052 | if (proc_cmdline_value_missing(key, value)) | |
1053 | return 0; | |
1054 | ||
1055 | return free_and_strdup_warn(&arg_usr_hash, value); | |
1056 | ||
6db615c1 LP |
1057 | } else if (streq(key, "rw") && !value) |
1058 | arg_root_rw = true; | |
1059 | else if (streq(key, "ro") && !value) | |
1060 | arg_root_rw = false; | |
91214a37 LP |
1061 | else if (streq(key, "systemd.volatile")) { |
1062 | VolatileMode m; | |
1063 | ||
1064 | if (value) { | |
1065 | m = volatile_mode_from_string(value); | |
1066 | if (m < 0) | |
7211c853 | 1067 | log_warning_errno(m, "Failed to parse systemd.volatile= argument: %s", value); |
91214a37 LP |
1068 | else |
1069 | arg_volatile_mode = m; | |
1070 | } else | |
1071 | arg_volatile_mode = VOLATILE_YES; | |
567a5307 | 1072 | |
1073 | } else if (streq(key, "systemd.swap")) { | |
1074 | ||
1075 | r = value ? parse_boolean(value) : 1; | |
1076 | if (r < 0) | |
1077 | log_warning("Failed to parse systemd.swap switch %s. Ignoring.", value); | |
1078 | else | |
1079 | arg_swap_enabled = r; | |
91214a37 | 1080 | } |
94734142 | 1081 | |
d0aa9ce5 | 1082 | return 0; |
94734142 LP |
1083 | } |
1084 | ||
c1b9e3df | 1085 | static int determine_device(char **what, const char *hash, const char *name) { |
2f3dfc6f | 1086 | |
c1b9e3df MB |
1087 | assert(what); |
1088 | assert(name); | |
1089 | ||
1090 | /* If we have a hash but no device then Verity is used, and we use the DM device. */ | |
1091 | if (*what) | |
2f3dfc6f LP |
1092 | return 0; |
1093 | ||
c1b9e3df | 1094 | if (!hash) |
2f3dfc6f LP |
1095 | return 0; |
1096 | ||
c1b9e3df MB |
1097 | *what = path_join("/dev/mapper/", name); |
1098 | if (!*what) | |
2f3dfc6f LP |
1099 | return log_oom(); |
1100 | ||
c1b9e3df | 1101 | log_info("Using verity %s device %s.", name, *what); |
2f3dfc6f LP |
1102 | |
1103 | return 1; | |
1104 | } | |
1105 | ||
c1b9e3df MB |
1106 | static int determine_root(void) { |
1107 | return determine_device(&arg_root_what, arg_root_hash, "root"); | |
1108 | } | |
1109 | ||
1110 | static int determine_usr(void) { | |
1111 | return determine_device(&arg_usr_what, arg_usr_hash, "usr"); | |
1112 | } | |
1113 | ||
7a44c7e3 | 1114 | static int run(const char *dest, const char *dest_early, const char *dest_late) { |
2572957e | 1115 | int r, r2 = 0, r3 = 0; |
6b1dc2bd | 1116 | |
7a44c7e3 ZJS |
1117 | assert_se(arg_dest = dest); |
1118 | assert_se(arg_dest_late = dest_late); | |
6b1dc2bd | 1119 | |
1d84ad94 | 1120 | r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, 0); |
b5884878 | 1121 | if (r < 0) |
da927ba9 | 1122 | log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); |
94734142 | 1123 | |
2f3dfc6f | 1124 | (void) determine_root(); |
c1b9e3df | 1125 | (void) determine_usr(); |
2f3dfc6f | 1126 | |
9f103625 TH |
1127 | /* Always honour root= and usr= in the kernel command line if we are in an initrd */ |
1128 | if (in_initrd()) { | |
2e852276 | 1129 | r = add_sysroot_mount(); |
003cba39 | 1130 | |
29a24ab2 | 1131 | r2 = add_sysroot_usr_mount_or_fallback(); |
91214a37 | 1132 | |
2572957e | 1133 | r3 = add_volatile_root(); |
003cba39 | 1134 | } else |
91214a37 | 1135 | r = add_volatile_var(); |
5e398e54 | 1136 | |
e48fdd84 LP |
1137 | /* Honour /etc/fstab only when that's enabled */ |
1138 | if (arg_fstab_enabled) { | |
e48fdd84 | 1139 | /* Parse the local /etc/fstab, possibly from the initrd */ |
2572957e | 1140 | r2 = parse_fstab(false); |
ac4785b0 | 1141 | |
e48fdd84 | 1142 | /* If running in the initrd also parse the /etc/fstab from the host */ |
2572957e ZJS |
1143 | if (in_initrd()) |
1144 | r3 = parse_fstab(true); | |
9b69569d ZJS |
1145 | else |
1146 | r3 = generator_enable_remount_fs_service(arg_dest); | |
e48fdd84 | 1147 | } |
6b1dc2bd | 1148 | |
2572957e | 1149 | return r < 0 ? r : r2 < 0 ? r2 : r3; |
6b1dc2bd | 1150 | } |
a4ef3e4d | 1151 | |
7a44c7e3 | 1152 | DEFINE_MAIN_GENERATOR_FUNCTION(run); |