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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
e48fdd84 | 2 | |
a8fbdf54 | 3 | #include <errno.h> |
e48fdd84 LP |
4 | #include <unistd.h> |
5 | ||
b5efdb8a | 6 | #include "alloc-util.h" |
dee29aeb | 7 | #include "cgroup-util.h" |
4f5dd394 LP |
8 | #include "dropin.h" |
9 | #include "escape.h" | |
3ffd4af2 | 10 | #include "fd-util.h" |
4f5dd394 LP |
11 | #include "fileio.h" |
12 | #include "fstab-util.h" | |
3ffd4af2 | 13 | #include "generator.h" |
a8fbdf54 TA |
14 | #include "log.h" |
15 | #include "macro.h" | |
e48fdd84 | 16 | #include "mkdir.h" |
4f5dd394 LP |
17 | #include "path-util.h" |
18 | #include "special.h" | |
98bad05e | 19 | #include "specifier.h" |
07630cea | 20 | #include "string-util.h" |
a8fbdf54 | 21 | #include "time-util.h" |
e48fdd84 | 22 | #include "unit-name.h" |
4f5dd394 | 23 | #include "util.h" |
e48fdd84 | 24 | |
fb883e75 ZJS |
25 | int generator_open_unit_file( |
26 | const char *dest, | |
27 | const char *source, | |
28 | const char *name, | |
29 | FILE **file) { | |
30 | ||
31 | const char *unit; | |
32 | FILE *f; | |
41f6e627 | 33 | int r; |
fb883e75 | 34 | |
270384b2 | 35 | unit = prefix_roota(dest, name); |
fb883e75 | 36 | |
41f6e627 ZJS |
37 | r = fopen_unlocked(unit, "wxe", &f); |
38 | if (r < 0) { | |
39 | if (source && r == -EEXIST) | |
40 | return log_error_errno(r, | |
fb883e75 ZJS |
41 | "Failed to create unit file %s, as it already exists. Duplicate entry in %s?", |
42 | unit, source); | |
43 | else | |
41f6e627 | 44 | return log_error_errno(r, |
fb883e75 ZJS |
45 | "Failed to create unit file %s: %m", |
46 | unit); | |
47 | } | |
48 | ||
fb883e75 ZJS |
49 | fprintf(f, |
50 | "# Automatically generated by %s\n\n", | |
51 | program_invocation_short_name); | |
52 | ||
53 | *file = f; | |
54 | return 0; | |
55 | } | |
56 | ||
5c176eb4 ZJS |
57 | int generator_add_symlink(const char *dir, const char *dst, const char *dep_type, const char *src) { |
58 | /* Adds a symlink from <dst>.<dep_type>/ to <src> (if src is absolute) | |
59 | * or ../<src> (otherwise). */ | |
b559616f ZJS |
60 | |
61 | const char *from, *to; | |
62 | ||
5c176eb4 ZJS |
63 | from = path_is_absolute(src) ? src : strjoina("../", src); |
64 | to = strjoina(dir, "/", dst, ".", dep_type, "/", basename(src)); | |
b559616f ZJS |
65 | |
66 | mkdir_parents_label(to, 0755); | |
67 | if (symlink(from, to) < 0) | |
7f0cc637 ZJS |
68 | if (errno != EEXIST) |
69 | return log_error_errno(errno, "Failed to create symlink \"%s\": %m", to); | |
b559616f ZJS |
70 | |
71 | return 0; | |
72 | } | |
73 | ||
4dda4e63 | 74 | static int write_fsck_sysroot_service(const char *dir, const char *what) { |
98bad05e | 75 | _cleanup_free_ char *device = NULL, *escaped = NULL, *escaped2 = NULL; |
4dda4e63 | 76 | _cleanup_fclose_ FILE *f = NULL; |
85eca92e | 77 | const char *unit; |
4dda4e63 ZJS |
78 | int r; |
79 | ||
98bad05e | 80 | escaped = specifier_escape(what); |
fa05e972 AB |
81 | if (!escaped) |
82 | return log_oom(); | |
83 | ||
98bad05e LP |
84 | escaped2 = cescape(escaped); |
85 | if (!escaped2) | |
86 | return log_oom(); | |
87 | ||
5ff8da10 | 88 | unit = strjoina(dir, "/"SPECIAL_FSCK_ROOT_SERVICE); |
4dda4e63 ZJS |
89 | log_debug("Creating %s", unit); |
90 | ||
91 | r = unit_name_from_path(what, ".device", &device); | |
92 | if (r < 0) | |
93 | return log_error_errno(r, "Failed to convert device \"%s\" to unit name: %m", what); | |
94 | ||
95 | f = fopen(unit, "wxe"); | |
96 | if (!f) | |
97 | return log_error_errno(errno, "Failed to create unit file %s: %m", unit); | |
98 | ||
99 | fprintf(f, | |
100 | "# Automatically generated by %1$s\n\n" | |
101 | "[Unit]\n" | |
4dda4e63 | 102 | "Description=File System Check on %2$s\n" |
da495a03 | 103 | "Documentation=man:systemd-fsck-root.service(8)\n" |
4dda4e63 ZJS |
104 | "DefaultDependencies=no\n" |
105 | "BindsTo=%3$s\n" | |
ff9bf8d0 | 106 | "Conflicts=shutdown.target\n" |
0900593e | 107 | "After=initrd-root-device.target local-fs-pre.target %3$s\n" |
4dda4e63 ZJS |
108 | "Before=shutdown.target\n" |
109 | "\n" | |
110 | "[Service]\n" | |
111 | "Type=oneshot\n" | |
112 | "RemainAfterExit=yes\n" | |
fa05e972 | 113 | "ExecStart=" SYSTEMD_FSCK_PATH " %4$s\n" |
4dda4e63 ZJS |
114 | "TimeoutSec=0\n", |
115 | program_invocation_short_name, | |
98bad05e | 116 | escaped, |
fa05e972 | 117 | device, |
98bad05e | 118 | escaped2); |
4dda4e63 | 119 | |
2929b4a6 LP |
120 | r = fflush_and_check(f); |
121 | if (r < 0) | |
122 | return log_error_errno(r, "Failed to write unit file %s: %m", unit); | |
4dda4e63 ZJS |
123 | |
124 | return 0; | |
125 | } | |
126 | ||
e48fdd84 LP |
127 | int generator_write_fsck_deps( |
128 | FILE *f, | |
2e852276 | 129 | const char *dir, |
e48fdd84 LP |
130 | const char *what, |
131 | const char *where, | |
6db615c1 | 132 | const char *fstype) { |
e48fdd84 | 133 | |
7410616c LP |
134 | int r; |
135 | ||
e48fdd84 | 136 | assert(f); |
2e852276 | 137 | assert(dir); |
6db615c1 LP |
138 | assert(what); |
139 | assert(where); | |
e48fdd84 LP |
140 | |
141 | if (!is_device_path(what)) { | |
142 | log_warning("Checking was requested for \"%s\", but it is not a device.", what); | |
143 | return 0; | |
144 | } | |
145 | ||
6db615c1 | 146 | if (!isempty(fstype) && !streq(fstype, "auto")) { |
eb66db55 | 147 | r = fsck_exists(fstype); |
85eca92e LP |
148 | if (r < 0) |
149 | log_warning_errno(r, "Checking was requested for %s, but couldn't detect if fsck.%s may be used, proceeding: %m", what, fstype); | |
150 | else if (r == 0) { | |
e48fdd84 | 151 | /* treat missing check as essentially OK */ |
85eca92e | 152 | log_debug("Checking was requested for %s, but fsck.%s does not exist.", what, fstype); |
571d0134 | 153 | return 0; |
85eca92e | 154 | } |
e48fdd84 LP |
155 | } |
156 | ||
2e852276 | 157 | if (path_equal(where, "/")) { |
85eca92e | 158 | const char *lnk; |
e48fdd84 | 159 | |
cbdc9cfe | 160 | lnk = strjoina(dir, "/" SPECIAL_LOCAL_FS_TARGET ".wants/" SPECIAL_FSCK_ROOT_SERVICE); |
e48fdd84 | 161 | |
37dc34f7 | 162 | (void) mkdir_parents(lnk, 0755); |
cbdc9cfe | 163 | if (symlink(SYSTEM_DATA_UNIT_PATH "/" SPECIAL_FSCK_ROOT_SERVICE, lnk) < 0) |
4a62c710 | 164 | return log_error_errno(errno, "Failed to create symlink %s: %m", lnk); |
e48fdd84 LP |
165 | |
166 | } else { | |
4dda4e63 | 167 | _cleanup_free_ char *_fsck = NULL; |
afacf3fc | 168 | const char *fsck, *dep; |
4dda4e63 ZJS |
169 | |
170 | if (in_initrd() && path_equal(where, "/sysroot")) { | |
171 | r = write_fsck_sysroot_service(dir, what); | |
172 | if (r < 0) | |
173 | return r; | |
174 | ||
5ff8da10 | 175 | fsck = SPECIAL_FSCK_ROOT_SERVICE; |
afacf3fc | 176 | dep = "Requires"; |
4dda4e63 | 177 | } else { |
afacf3fc LP |
178 | /* When this is /usr, then let's add a Wants= dependency, otherwise a Requires= |
179 | * dependency. Why? We can't possibly unmount /usr during shutdown, but if we have a | |
180 | * Requires= from /usr onto a fsck@.service unit and that unit is shut down, then | |
181 | * we'd have to unmount /usr too. */ | |
182 | ||
183 | dep = !in_initrd() && path_equal(where, "/usr") ? "Wants" : "Requires"; | |
184 | ||
4dda4e63 ZJS |
185 | r = unit_name_from_path_instance("systemd-fsck", what, ".service", &_fsck); |
186 | if (r < 0) | |
187 | return log_error_errno(r, "Failed to create fsck service name: %m"); | |
188 | ||
189 | fsck = _fsck; | |
190 | } | |
e48fdd84 LP |
191 | |
192 | fprintf(f, | |
afacf3fc LP |
193 | "%1$s=%2$s\n" |
194 | "After=%2$s\n", | |
195 | dep, fsck); | |
e48fdd84 LP |
196 | } |
197 | ||
198 | return 0; | |
199 | } | |
29686440 | 200 | |
2e852276 ZJS |
201 | int generator_write_timeouts( |
202 | const char *dir, | |
203 | const char *what, | |
204 | const char *where, | |
205 | const char *opts, | |
206 | char **filtered) { | |
29686440 | 207 | |
c2f4bcfc ZJS |
208 | /* Configure how long we wait for a device that backs a mount point or a |
209 | * swap partition to show up. This is useful to support endless device timeouts | |
210 | * for devices that show up only after user input, like crypto devices. */ | |
29686440 | 211 | |
d15d0333 | 212 | _cleanup_free_ char *node = NULL, *unit = NULL, *timeout = NULL; |
29686440 ZJS |
213 | usec_t u; |
214 | int r; | |
29686440 | 215 | |
0004f698 ZJS |
216 | r = fstab_filter_options(opts, "comment=systemd.device-timeout\0" |
217 | "x-systemd.device-timeout\0", | |
d15d0333 ZJS |
218 | NULL, &timeout, filtered); |
219 | if (r <= 0) | |
220 | return r; | |
b3208b66 | 221 | |
0004f698 | 222 | r = parse_sec_fix_0(timeout, &u); |
29686440 | 223 | if (r < 0) { |
7410616c | 224 | log_warning("Failed to parse timeout for %s, ignoring: %s", where, timeout); |
29686440 ZJS |
225 | return 0; |
226 | } | |
227 | ||
228 | node = fstab_node_to_udev_node(what); | |
229 | if (!node) | |
230 | return log_oom(); | |
c67bd1f7 N |
231 | if (!is_device_path(node)) { |
232 | log_warning("x-systemd.device-timeout ignored for %s", what); | |
233 | return 0; | |
234 | } | |
29686440 | 235 | |
7410616c LP |
236 | r = unit_name_from_path(node, ".device", &unit); |
237 | if (r < 0) | |
238 | return log_error_errno(r, "Failed to make unit name from path: %m"); | |
29686440 | 239 | |
8eea8687 | 240 | return write_drop_in_format(dir, unit, 50, "device-timeout", |
7cecc563 ZJS |
241 | "# Automatically generated by %s\n" |
242 | "# from supplied options \"%s\"\n\n" | |
acd53eaa LP |
243 | "[Unit]\n" |
244 | "JobRunningTimeoutSec=%s", | |
245 | program_invocation_short_name, | |
7cecc563 | 246 | opts, |
acd53eaa | 247 | timeout); |
29686440 | 248 | } |
7163e1ca | 249 | |
4195077a MK |
250 | int generator_write_device_deps( |
251 | const char *dir, | |
252 | const char *what, | |
253 | const char *where, | |
254 | const char *opts) { | |
255 | ||
256 | /* fstab records that specify _netdev option should apply the network | |
257 | * ordering on the actual device depending on network connection. If we | |
258 | * are not mounting real device (NFS, CIFS), we rely on _netdev effect | |
259 | * on the mount unit itself. */ | |
260 | ||
261 | _cleanup_free_ char *node = NULL, *unit = NULL; | |
262 | int r; | |
263 | ||
ad8f1b0f FB |
264 | if (fstab_is_extrinsic(where, opts)) |
265 | return 0; | |
266 | ||
4195077a MK |
267 | if (!fstab_test_option(opts, "_netdev\0")) |
268 | return 0; | |
269 | ||
270 | node = fstab_node_to_udev_node(what); | |
271 | if (!node) | |
272 | return log_oom(); | |
273 | ||
274 | /* Nothing to apply dependencies to. */ | |
275 | if (!is_device_path(node)) | |
276 | return 0; | |
277 | ||
278 | r = unit_name_from_path(node, ".device", &unit); | |
279 | if (r < 0) | |
da495a03 ZJS |
280 | return log_error_errno(r, "Failed to make unit name from path \"%s\": %m", |
281 | node); | |
4195077a MK |
282 | |
283 | /* See mount_add_default_dependencies for explanation why we create such | |
284 | * dependencies. */ | |
285 | return write_drop_in_format(dir, unit, 50, "netdev-dependencies", | |
286 | "# Automatically generated by %s\n\n" | |
287 | "[Unit]\n" | |
288 | "After=" SPECIAL_NETWORK_ONLINE_TARGET " " SPECIAL_NETWORK_TARGET "\n" | |
289 | "Wants=" SPECIAL_NETWORK_ONLINE_TARGET "\n", | |
290 | program_invocation_short_name); | |
291 | } | |
292 | ||
7163e1ca DD |
293 | int generator_write_initrd_root_device_deps(const char *dir, const char *what) { |
294 | _cleanup_free_ char *unit = NULL; | |
295 | int r; | |
296 | ||
297 | r = unit_name_from_path(what, ".device", &unit); | |
298 | if (r < 0) | |
da495a03 ZJS |
299 | return log_error_errno(r, "Failed to make unit name from path \"%s\": %m", |
300 | what); | |
7163e1ca DD |
301 | |
302 | return write_drop_in_format(dir, SPECIAL_INITRD_ROOT_DEVICE_TARGET, 50, "root-device", | |
303 | "# Automatically generated by %s\n\n" | |
acd53eaa LP |
304 | "[Unit]\n" |
305 | "Requires=%s\n" | |
306 | "After=%s", | |
307 | program_invocation_short_name, | |
308 | unit, | |
309 | unit); | |
7163e1ca | 310 | } |
da495a03 ZJS |
311 | |
312 | int generator_hook_up_mkswap( | |
313 | const char *dir, | |
314 | const char *what) { | |
315 | ||
316 | _cleanup_free_ char *node = NULL, *unit = NULL, *escaped = NULL, *where_unit = NULL; | |
317 | _cleanup_fclose_ FILE *f = NULL; | |
318 | const char *unit_file; | |
319 | int r; | |
320 | ||
321 | node = fstab_node_to_udev_node(what); | |
322 | if (!node) | |
323 | return log_oom(); | |
324 | ||
325 | /* Nothing to work on. */ | |
baaa35ad ZJS |
326 | if (!is_device_path(node)) |
327 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
328 | "Cannot format something that is not a device node: %s", | |
329 | node); | |
da495a03 ZJS |
330 | |
331 | r = unit_name_from_path_instance("systemd-mkswap", node, ".service", &unit); | |
332 | if (r < 0) | |
333 | return log_error_errno(r, "Failed to make unit instance name from path \"%s\": %m", | |
334 | node); | |
335 | ||
270384b2 | 336 | unit_file = prefix_roota(dir, unit); |
da495a03 ZJS |
337 | log_debug("Creating %s", unit_file); |
338 | ||
339 | escaped = cescape(node); | |
340 | if (!escaped) | |
341 | return log_oom(); | |
342 | ||
343 | r = unit_name_from_path(what, ".swap", &where_unit); | |
344 | if (r < 0) | |
345 | return log_error_errno(r, "Failed to make unit name from path \"%s\": %m", | |
346 | what); | |
347 | ||
348 | f = fopen(unit_file, "wxe"); | |
349 | if (!f) | |
350 | return log_error_errno(errno, "Failed to create unit file %s: %m", | |
351 | unit_file); | |
352 | ||
353 | fprintf(f, | |
354 | "# Automatically generated by %s\n\n" | |
355 | "[Unit]\n" | |
356 | "Description=Make Swap on %%f\n" | |
357 | "Documentation=man:systemd-mkswap@.service(8)\n" | |
358 | "DefaultDependencies=no\n" | |
359 | "BindsTo=%%i.device\n" | |
ff9bf8d0 | 360 | "Conflicts=shutdown.target\n" |
da495a03 | 361 | "After=%%i.device\n" |
ff9bf8d0 | 362 | "Before=shutdown.target %s\n" |
da495a03 ZJS |
363 | "\n" |
364 | "[Service]\n" | |
365 | "Type=oneshot\n" | |
366 | "RemainAfterExit=yes\n" | |
367 | "ExecStart="SYSTEMD_MAKEFS_PATH " swap %s\n" | |
368 | "TimeoutSec=0\n", | |
369 | program_invocation_short_name, | |
370 | where_unit, | |
371 | escaped); | |
372 | ||
373 | r = fflush_and_check(f); | |
374 | if (r < 0) | |
375 | return log_error_errno(r, "Failed to write unit file %s: %m", unit_file); | |
376 | ||
377 | return generator_add_symlink(dir, where_unit, "requires", unit); | |
378 | } | |
379 | ||
380 | int generator_hook_up_mkfs( | |
381 | const char *dir, | |
382 | const char *what, | |
383 | const char *where, | |
384 | const char *type) { | |
385 | ||
386 | _cleanup_free_ char *node = NULL, *unit = NULL, *escaped = NULL, *where_unit = NULL; | |
387 | _cleanup_fclose_ FILE *f = NULL; | |
388 | const char *unit_file; | |
389 | int r; | |
390 | ||
391 | node = fstab_node_to_udev_node(what); | |
392 | if (!node) | |
393 | return log_oom(); | |
394 | ||
395 | /* Nothing to work on. */ | |
baaa35ad ZJS |
396 | if (!is_device_path(node)) |
397 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
398 | "Cannot format something that is not a device node: %s", | |
399 | node); | |
da495a03 | 400 | |
baaa35ad ZJS |
401 | if (!type || streq(type, "auto")) |
402 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
403 | "Cannot format partition %s, filesystem type is not specified", | |
404 | node); | |
da495a03 | 405 | |
804f8e17 | 406 | r = unit_name_from_path_instance("systemd-makefs", node, ".service", &unit); |
da495a03 ZJS |
407 | if (r < 0) |
408 | return log_error_errno(r, "Failed to make unit instance name from path \"%s\": %m", | |
409 | node); | |
410 | ||
270384b2 | 411 | unit_file = prefix_roota(dir, unit); |
da495a03 ZJS |
412 | log_debug("Creating %s", unit_file); |
413 | ||
414 | escaped = cescape(node); | |
415 | if (!escaped) | |
416 | return log_oom(); | |
417 | ||
418 | r = unit_name_from_path(where, ".mount", &where_unit); | |
419 | if (r < 0) | |
420 | return log_error_errno(r, "Failed to make unit name from path \"%s\": %m", | |
421 | where); | |
422 | ||
423 | f = fopen(unit_file, "wxe"); | |
424 | if (!f) | |
425 | return log_error_errno(errno, "Failed to create unit file %s: %m", | |
426 | unit_file); | |
427 | ||
428 | fprintf(f, | |
429 | "# Automatically generated by %s\n\n" | |
430 | "[Unit]\n" | |
431 | "Description=Make File System on %%f\n" | |
804f8e17 | 432 | "Documentation=man:systemd-makefs@.service(8)\n" |
da495a03 ZJS |
433 | "DefaultDependencies=no\n" |
434 | "BindsTo=%%i.device\n" | |
ff9bf8d0 | 435 | "Conflicts=shutdown.target\n" |
da495a03 ZJS |
436 | "After=%%i.device\n" |
437 | /* fsck might or might not be used, so let's be safe and order | |
438 | * ourselves before both systemd-fsck@.service and the mount unit. */ | |
ff9bf8d0 | 439 | "Before=shutdown.target systemd-fsck@%%i.service %s\n" |
da495a03 ZJS |
440 | "\n" |
441 | "[Service]\n" | |
442 | "Type=oneshot\n" | |
443 | "RemainAfterExit=yes\n" | |
444 | "ExecStart="SYSTEMD_MAKEFS_PATH " %s %s\n" | |
445 | "TimeoutSec=0\n", | |
446 | program_invocation_short_name, | |
447 | where_unit, | |
448 | type, | |
449 | escaped); | |
450 | // XXX: what about local-fs-pre.target? | |
451 | ||
452 | r = fflush_and_check(f); | |
453 | if (r < 0) | |
454 | return log_error_errno(r, "Failed to write unit file %s: %m", unit_file); | |
455 | ||
456 | return generator_add_symlink(dir, where_unit, "requires", unit); | |
457 | } | |
7f2806d5 ZJS |
458 | |
459 | int generator_hook_up_growfs( | |
460 | const char *dir, | |
461 | const char *where, | |
462 | const char *target) { | |
463 | ||
464 | _cleanup_free_ char *unit = NULL, *escaped = NULL, *where_unit = NULL; | |
465 | _cleanup_fclose_ FILE *f = NULL; | |
466 | const char *unit_file; | |
467 | int r; | |
468 | ||
469 | escaped = cescape(where); | |
470 | if (!escaped) | |
471 | return log_oom(); | |
472 | ||
473 | r = unit_name_from_path_instance("systemd-growfs", where, ".service", &unit); | |
474 | if (r < 0) | |
475 | return log_error_errno(r, "Failed to make unit instance name from path \"%s\": %m", | |
476 | where); | |
477 | ||
478 | r = unit_name_from_path(where, ".mount", &where_unit); | |
479 | if (r < 0) | |
480 | return log_error_errno(r, "Failed to make unit name from path \"%s\": %m", | |
481 | where); | |
482 | ||
270384b2 | 483 | unit_file = prefix_roota(dir, unit); |
7f2806d5 ZJS |
484 | log_debug("Creating %s", unit_file); |
485 | ||
486 | f = fopen(unit_file, "wxe"); | |
487 | if (!f) | |
488 | return log_error_errno(errno, "Failed to create unit file %s: %m", | |
489 | unit_file); | |
490 | ||
491 | fprintf(f, | |
492 | "# Automatically generated by %s\n\n" | |
493 | "[Unit]\n" | |
494 | "Description=Grow File System on %%f\n" | |
495 | "Documentation=man:systemd-growfs@.service(8)\n" | |
496 | "DefaultDependencies=no\n" | |
497 | "BindsTo=%%i.mount\n" | |
ff9bf8d0 | 498 | "Conflicts=shutdown.target\n" |
7f2806d5 | 499 | "After=%%i.mount\n" |
18e6e863 LP |
500 | "Before=shutdown.target %s\n", |
501 | program_invocation_short_name, | |
502 | target); | |
503 | ||
504 | if (empty_or_root(where)) /* Make sure the root fs is actually writable before we resize it */ | |
505 | fprintf(f, | |
506 | "After=systemd-remount-fs.service\n"); | |
507 | ||
508 | fprintf(f, | |
7f2806d5 ZJS |
509 | "\n" |
510 | "[Service]\n" | |
511 | "Type=oneshot\n" | |
512 | "RemainAfterExit=yes\n" | |
513 | "ExecStart="SYSTEMD_GROWFS_PATH " %s\n" | |
514 | "TimeoutSec=0\n", | |
7f2806d5 ZJS |
515 | escaped); |
516 | ||
517 | return generator_add_symlink(dir, where_unit, "wants", unit); | |
518 | } | |
afe44c8f | 519 | |
9b69569d ZJS |
520 | int generator_enable_remount_fs_service(const char *dir) { |
521 | /* Pull in systemd-remount-fs.service */ | |
522 | return generator_add_symlink(dir, SPECIAL_LOCAL_FS_TARGET, "wants", | |
523 | SYSTEM_DATA_UNIT_PATH "/" SPECIAL_REMOUNT_FS_SERVICE); | |
524 | } | |
525 | ||
a7e88558 LP |
526 | int generator_write_blockdev_dependency( |
527 | FILE *f, | |
528 | const char *what) { | |
529 | ||
530 | _cleanup_free_ char *escaped = NULL; | |
531 | int r; | |
532 | ||
533 | assert(f); | |
534 | assert(what); | |
535 | ||
536 | if (!path_startswith(what, "/dev/")) | |
537 | return 0; | |
538 | ||
539 | r = unit_name_path_escape(what, &escaped); | |
540 | if (r < 0) | |
541 | return log_error_errno(r, "Failed to escape device node path %s: %m", what); | |
542 | ||
543 | fprintf(f, | |
544 | "After=blockdev@%s.target\n", | |
545 | escaped); | |
546 | ||
547 | return 0; | |
548 | } | |
549 | ||
550 | int generator_write_cryptsetup_unit_section( | |
551 | FILE *f, | |
552 | const char *source) { | |
553 | ||
554 | assert(f); | |
555 | ||
556 | fprintf(f, | |
557 | "[Unit]\n" | |
558 | "Description=Cryptography Setup for %%I\n" | |
559 | "Documentation=man:crypttab(5) man:systemd-cryptsetup-generator(8) man:systemd-cryptsetup@.service(8)\n"); | |
560 | ||
561 | if (source) | |
562 | fprintf(f, "SourcePath=%s\n", source); | |
563 | ||
564 | fprintf(f, | |
565 | "DefaultDependencies=no\n" | |
566 | "IgnoreOnIsolate=true\n" | |
239952e8 | 567 | "After=cryptsetup-pre.target systemd-udevd-kernel.socket\n" |
a7e88558 LP |
568 | "Before=blockdev@dev-mapper-%%i.target\n" |
569 | "Wants=blockdev@dev-mapper-%%i.target\n"); | |
570 | ||
571 | return 0; | |
572 | } | |
573 | ||
574 | int generator_write_cryptsetup_service_section( | |
575 | FILE *f, | |
576 | const char *name, | |
577 | const char *what, | |
578 | const char *password, | |
579 | const char *options) { | |
580 | ||
581 | _cleanup_free_ char *name_escaped = NULL, *what_escaped = NULL, *password_escaped = NULL, *options_escaped = NULL; | |
582 | ||
583 | assert(f); | |
584 | assert(name); | |
585 | assert(what); | |
586 | ||
587 | name_escaped = specifier_escape(name); | |
588 | if (!name_escaped) | |
589 | return log_oom(); | |
590 | ||
591 | what_escaped = specifier_escape(what); | |
592 | if (!what_escaped) | |
593 | return log_oom(); | |
594 | ||
595 | if (password) { | |
596 | password_escaped = specifier_escape(password); | |
597 | if (!password_escaped) | |
598 | return log_oom(); | |
599 | } | |
600 | ||
601 | if (options) { | |
602 | options_escaped = specifier_escape(options); | |
603 | if (!options_escaped) | |
604 | return log_oom(); | |
605 | } | |
606 | ||
607 | fprintf(f, | |
608 | "\n" | |
609 | "[Service]\n" | |
610 | "Type=oneshot\n" | |
611 | "RemainAfterExit=yes\n" | |
612 | "TimeoutSec=0\n" /* The binary handles timeouts on its own */ | |
613 | "KeyringMode=shared\n" /* Make sure we can share cached keys among instances */ | |
614 | "OOMScoreAdjust=500\n" /* Unlocking can allocate a lot of memory if Argon2 is used */ | |
615 | "ExecStart=" SYSTEMD_CRYPTSETUP_PATH " attach '%s' '%s' '%s' '%s'\n" | |
616 | "ExecStop=" SYSTEMD_CRYPTSETUP_PATH " detach '%s'\n", | |
617 | name_escaped, what_escaped, strempty(password_escaped), strempty(options_escaped), | |
618 | name_escaped); | |
619 | ||
620 | return 0; | |
621 | } | |
622 | ||
08b04ec7 GP |
623 | int generator_write_veritysetup_unit_section( |
624 | FILE *f, | |
625 | const char *source) { | |
626 | ||
627 | assert(f); | |
628 | ||
629 | fprintf(f, | |
630 | "[Unit]\n" | |
631 | "Description=Integrity Protection Setup for %%I\n" | |
632 | "Documentation=man:veritytab(5) man:systemd-veritysetup-generator(8) man:systemd-veritysetup@.service(8)\n"); | |
633 | ||
634 | if (source) | |
635 | fprintf(f, "SourcePath=%s\n", source); | |
636 | ||
637 | fprintf(f, | |
638 | "DefaultDependencies=no\n" | |
639 | "IgnoreOnIsolate=true\n" | |
640 | "After=cryptsetup-pre.target systemd-udevd-kernel.socket\n" | |
641 | "Before=blockdev@dev-mapper-%%i.target\n" | |
642 | "Wants=blockdev@dev-mapper-%%i.target\n"); | |
643 | ||
644 | return 0; | |
645 | } | |
646 | ||
647 | int generator_write_veritysetup_service_section( | |
648 | FILE *f, | |
649 | const char *name, | |
650 | const char *data_what, | |
651 | const char *hash_what, | |
652 | const char *roothash, | |
653 | const char *options) { | |
654 | ||
47237e0e | 655 | _cleanup_free_ char *name_escaped = NULL, *data_what_escaped = NULL, *hash_what_escaped = NULL, |
08b04ec7 GP |
656 | *roothash_escaped = NULL, *options_escaped = NULL; |
657 | ||
658 | assert(f); | |
659 | assert(name); | |
660 | assert(data_what); | |
661 | assert(hash_what); | |
662 | ||
663 | name_escaped = specifier_escape(name); | |
664 | if (!name_escaped) | |
665 | return log_oom(); | |
666 | ||
667 | data_what_escaped = specifier_escape(data_what); | |
668 | if (!data_what_escaped) | |
669 | return log_oom(); | |
670 | ||
671 | hash_what_escaped = specifier_escape(hash_what); | |
672 | if (!hash_what_escaped) | |
673 | return log_oom(); | |
674 | ||
675 | roothash_escaped = specifier_escape(roothash); | |
676 | if (!roothash_escaped) | |
677 | return log_oom(); | |
678 | ||
679 | if (options) { | |
680 | options_escaped = specifier_escape(options); | |
681 | if (!options_escaped) | |
682 | return log_oom(); | |
683 | } | |
684 | ||
685 | fprintf(f, | |
686 | "\n" | |
687 | "[Service]\n" | |
688 | "Type=oneshot\n" | |
689 | "RemainAfterExit=yes\n" | |
690 | "ExecStart=" SYSTEMD_VERITYSETUP_PATH " attach '%s' '%s' '%s' '%s' '%s'\n" | |
691 | "ExecStop=" SYSTEMD_VERITYSETUP_PATH " detach '%s'\n", | |
692 | name_escaped, data_what_escaped, hash_what_escaped, roothash_escaped, strempty(options_escaped), | |
693 | name_escaped); | |
694 | ||
695 | return 0; | |
696 | } | |
697 | ||
afe44c8f | 698 | void log_setup_generator(void) { |
dee29aeb LP |
699 | /* Disable talking to syslog/journal (i.e. the two IPC-based loggers) if we run in system context. */ |
700 | if (cg_pid_get_owner_uid(0, NULL) == -ENXIO /* not running in a per-user slice */) | |
701 | log_set_prohibit_ipc(true); | |
702 | ||
703 | log_set_target(LOG_TARGET_JOURNAL_OR_KMSG); /* This effectively means: journal for per-user generators, kmsg otherwise */ | |
704 | log_parse_environment(); | |
705 | (void) log_open(); | |
afe44c8f | 706 | } |