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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
3d20ed6d LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2010 Lennart Poettering | |
f1f0198c | 6 | Copyright 2014 Holger Hans Peter Freyther |
3d20ed6d LP |
7 | |
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
3d20ed6d LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
3d20ed6d | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
3d20ed6d LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
3d20ed6d | 22 | #include <errno.h> |
a84f5192 | 23 | #include <fcntl.h> |
cf0fbc49 TA |
24 | #include <stdbool.h> |
25 | #include <stdio.h> | |
27d340c7 | 26 | #include <sys/file.h> |
96d9117a | 27 | #include <sys/prctl.h> |
cf0fbc49 TA |
28 | #include <sys/stat.h> |
29 | #include <unistd.h> | |
3d20ed6d | 30 | |
0c842e0a | 31 | #include "sd-bus.h" |
9102fdc5 | 32 | #include "sd-device.h" |
3d20ed6d | 33 | |
b5efdb8a | 34 | #include "alloc-util.h" |
96aad8d1 | 35 | #include "bus-common-errors.h" |
3ffd4af2 LP |
36 | #include "bus-error.h" |
37 | #include "bus-util.h" | |
9102fdc5 | 38 | #include "device-util.h" |
3ffd4af2 | 39 | #include "fd-util.h" |
f4f15635 | 40 | #include "fs-util.h" |
6bedfcbb | 41 | #include "parse-util.h" |
eb66db55 | 42 | #include "path-util.h" |
4e731273 | 43 | #include "proc-cmdline.h" |
3ffd4af2 LP |
44 | #include "process-util.h" |
45 | #include "signal-util.h" | |
ac6e2f0d | 46 | #include "socket-util.h" |
3ffd4af2 | 47 | #include "special.h" |
15a5e950 | 48 | #include "stdio-util.h" |
3ffd4af2 | 49 | #include "util.h" |
3d20ed6d | 50 | |
91077af6 TA |
51 | /* exit codes as defined in fsck(8) */ |
52 | enum { | |
53 | FSCK_SUCCESS = 0, | |
54 | FSCK_ERROR_CORRECTED = 1, | |
55 | FSCK_SYSTEM_SHOULD_REBOOT = 2, | |
56 | FSCK_ERRORS_LEFT_UNCORRECTED = 4, | |
57 | FSCK_OPERATIONAL_ERROR = 8, | |
58 | FSCK_USAGE_OR_SYNTAX_ERROR = 16, | |
59 | FSCK_USER_CANCELLED = 32, | |
60 | FSCK_SHARED_LIB_ERROR = 128, | |
61 | }; | |
62 | ||
3d20ed6d LP |
63 | static bool arg_skip = false; |
64 | static bool arg_force = false; | |
96d9117a | 65 | static bool arg_show_progress = false; |
f1f0198c | 66 | static const char *arg_repair = "-a"; |
3d20ed6d | 67 | |
48db40b3 | 68 | static void start_target(const char *target, const char *mode) { |
4afd3348 LP |
69 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
70 | _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; | |
0c842e0a | 71 | int r; |
3d20ed6d LP |
72 | |
73 | assert(target); | |
74 | ||
266f3e26 | 75 | r = bus_connect_system_systemd(&bus); |
0c842e0a | 76 | if (r < 0) { |
da927ba9 | 77 | log_error_errno(r, "Failed to get D-Bus connection: %m"); |
0c842e0a | 78 | return; |
3d20ed6d LP |
79 | } |
80 | ||
0c842e0a | 81 | log_info("Running request %s/start/replace", target); |
3d20ed6d | 82 | |
90bb85e1 | 83 | /* Start these units only if we can replace base.target with it */ |
0c842e0a TG |
84 | r = sd_bus_call_method(bus, |
85 | "org.freedesktop.systemd1", | |
86 | "/org/freedesktop/systemd1", | |
87 | "org.freedesktop.systemd1.Manager", | |
88 | "StartUnitReplace", | |
89 | &error, | |
90 | NULL, | |
48db40b3 | 91 | "sss", "basic.target", target, mode); |
3d20ed6d | 92 | |
5220a6f3 LP |
93 | /* Don't print a warning if we aren't called during startup */ |
94 | if (r < 0 && !sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_JOB)) | |
24b52437 | 95 | log_error("Failed to start unit: %s", bus_error_message(&error, r)); |
3d20ed6d LP |
96 | } |
97 | ||
96287a49 | 98 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
24b52437 LP |
99 | int r; |
100 | ||
101 | assert(key); | |
059cb385 | 102 | |
1d84ad94 LP |
103 | if (streq(key, "fsck.mode")) { |
104 | ||
105 | if (proc_cmdline_value_missing(key, value)) | |
106 | return 0; | |
059cb385 LP |
107 | |
108 | if (streq(value, "auto")) | |
109 | arg_force = arg_skip = false; | |
110 | else if (streq(value, "force")) | |
111 | arg_force = true; | |
112 | else if (streq(value, "skip")) | |
113 | arg_skip = true; | |
114 | else | |
85013844 LP |
115 | log_warning("Invalid fsck.mode= parameter '%s'. Ignoring.", value); |
116 | ||
1d84ad94 LP |
117 | } else if (streq(key, "fsck.repair")) { |
118 | ||
119 | if (proc_cmdline_value_missing(key, value)) | |
120 | return 0; | |
f1f0198c HHPF |
121 | |
122 | if (streq(value, "preen")) | |
123 | arg_repair = "-a"; | |
24b52437 LP |
124 | else { |
125 | r = parse_boolean(value); | |
126 | if (r > 0) | |
127 | arg_repair = "-y"; | |
128 | else if (r == 0) | |
129 | arg_repair = "-n"; | |
130 | else | |
131 | log_warning("Invalid fsck.repair= parameter '%s'. Ignoring.", value); | |
132 | } | |
85013844 LP |
133 | } |
134 | ||
349cc4a5 | 135 | #if HAVE_SYSV_COMPAT |
059cb385 LP |
136 | else if (streq(key, "fastboot") && !value) { |
137 | log_warning("Please pass 'fsck.mode=skip' rather than 'fastboot' on the kernel command line."); | |
141a79f4 | 138 | arg_skip = true; |
85013844 | 139 | |
059cb385 LP |
140 | } else if (streq(key, "forcefsck") && !value) { |
141 | log_warning("Please pass 'fsck.mode=force' rather than 'forcefsck' on the kernel command line."); | |
141a79f4 | 142 | arg_force = true; |
3d20ed6d | 143 | } |
141a79f4 | 144 | #endif |
3d20ed6d | 145 | |
3d20ed6d LP |
146 | return 0; |
147 | } | |
148 | ||
149 | static void test_files(void) { | |
85013844 | 150 | |
349cc4a5 | 151 | #if HAVE_SYSV_COMPAT |
32f992a5 LP |
152 | if (access("/fastboot", F_OK) >= 0) { |
153 | log_error("Please pass 'fsck.mode=skip' on the kernel command line rather than creating /fastboot on the root file system."); | |
3d20ed6d | 154 | arg_skip = true; |
32f992a5 | 155 | } |
3d20ed6d | 156 | |
32f992a5 LP |
157 | if (access("/forcefsck", F_OK) >= 0) { |
158 | log_error("Please pass 'fsck.mode=force' on the kernel command line rather than creating /forcefsck on the root file system."); | |
3d20ed6d | 159 | arg_force = true; |
32f992a5 LP |
160 | } |
161 | #endif | |
27d340c7 | 162 | |
96d9117a | 163 | arg_show_progress = access("/run/systemd/show-status", F_OK) >= 0; |
27d340c7 LP |
164 | } |
165 | ||
96d9117a LP |
166 | static double percent(int pass, unsigned long cur, unsigned long max) { |
167 | /* Values stolen from e2fsck */ | |
168 | ||
169 | static const int pass_table[] = { | |
170 | 0, 70, 90, 92, 95, 100 | |
27d340c7 LP |
171 | }; |
172 | ||
96d9117a LP |
173 | if (pass <= 0) |
174 | return 0.0; | |
175 | ||
176 | if ((unsigned) pass >= ELEMENTSOF(pass_table) || max == 0) | |
177 | return 100.0; | |
178 | ||
179 | return (double) pass_table[pass-1] + | |
180 | ((double) pass_table[pass] - (double) pass_table[pass-1]) * | |
181 | (double) cur / (double) max; | |
182 | } | |
183 | ||
184 | static int process_progress(int fd) { | |
185 | _cleanup_fclose_ FILE *console = NULL, *f = NULL; | |
186 | usec_t last = 0; | |
187 | bool locked = false; | |
188 | int clear = 0, r; | |
189 | ||
190 | /* No progress pipe to process? Then we are a NOP. */ | |
191 | if (fd < 0) | |
192 | return 0; | |
193 | ||
194 | f = fdopen(fd, "re"); | |
195 | if (!f) { | |
196 | safe_close(fd); | |
197 | return -errno; | |
198 | } | |
199 | ||
200 | console = fopen("/dev/console", "we"); | |
201 | if (!console) | |
202 | return -ENOMEM; | |
203 | ||
204 | for (;;) { | |
205 | int pass, m; | |
206 | unsigned long cur, max; | |
ac6e2f0d | 207 | _cleanup_free_ char *device = NULL; |
96d9117a LP |
208 | double p; |
209 | usec_t t; | |
27d340c7 | 210 | |
96d9117a LP |
211 | if (fscanf(f, "%i %lu %lu %ms", &pass, &cur, &max, &device) != 4) { |
212 | ||
213 | if (ferror(f)) | |
214 | r = log_warning_errno(errno, "Failed to read from progress pipe: %m"); | |
215 | else if (feof(f)) | |
216 | r = 0; | |
217 | else { | |
218 | log_warning("Failed to parse progress pipe data"); | |
219 | r = -EBADMSG; | |
220 | } | |
27d340c7 | 221 | break; |
96d9117a LP |
222 | } |
223 | ||
224 | /* Only show one progress counter at max */ | |
225 | if (!locked) { | |
226 | if (flock(fileno(console), LOCK_EX|LOCK_NB) < 0) | |
227 | continue; | |
228 | ||
229 | locked = true; | |
230 | } | |
27d340c7 | 231 | |
27d340c7 LP |
232 | /* Only update once every 50ms */ |
233 | t = now(CLOCK_MONOTONIC); | |
e375825d | 234 | if (last + 50 * USEC_PER_MSEC > t) |
27d340c7 | 235 | continue; |
27d340c7 LP |
236 | |
237 | last = t; | |
238 | ||
96d9117a LP |
239 | p = percent(pass, cur, max); |
240 | fprintf(console, "\r%s: fsck %3.1f%% complete...\r%n", device, p, &m); | |
241 | fflush(console); | |
242 | ||
243 | if (m > clear) | |
244 | clear = m; | |
27d340c7 LP |
245 | } |
246 | ||
96d9117a LP |
247 | if (clear > 0) { |
248 | unsigned j; | |
249 | ||
250 | fputc('\r', console); | |
251 | for (j = 0; j < (unsigned) clear; j++) | |
252 | fputc(' ', console); | |
253 | fputc('\r', console); | |
254 | fflush(console); | |
255 | } | |
256 | ||
257 | return r; | |
258 | } | |
259 | ||
260 | static int fsck_progress_socket(void) { | |
261 | static const union sockaddr_union sa = { | |
262 | .un.sun_family = AF_UNIX, | |
263 | .un.sun_path = "/run/systemd/fsck.progress", | |
264 | }; | |
265 | ||
266 | int fd, r; | |
267 | ||
268 | fd = socket(AF_UNIX, SOCK_STREAM, 0); | |
269 | if (fd < 0) | |
270 | return log_warning_errno(errno, "socket(): %m"); | |
271 | ||
fc2fffe7 | 272 | if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
3742095b | 273 | r = log_full_errno(IN_SET(errno, ECONNREFUSED, ENOENT) ? LOG_DEBUG : LOG_WARNING, |
96d9117a LP |
274 | errno, "Failed to connect to progress socket %s, ignoring: %m", sa.un.sun_path); |
275 | safe_close(fd); | |
276 | return r; | |
277 | } | |
278 | ||
279 | return fd; | |
3d20ed6d LP |
280 | } |
281 | ||
282 | int main(int argc, char *argv[]) { | |
96d9117a | 283 | _cleanup_close_pair_ int progress_pipe[2] = { -1, -1 }; |
4afd3348 | 284 | _cleanup_(sd_device_unrefp) sd_device *dev = NULL; |
94192cda | 285 | const char *device, *type; |
dc8e15c2 | 286 | bool root_directory; |
96d9117a | 287 | siginfo_t status; |
94192cda | 288 | struct stat st; |
96d9117a LP |
289 | int r; |
290 | pid_t pid; | |
3d20ed6d | 291 | |
a9e1f5ec LP |
292 | if (argc > 2) { |
293 | log_error("This program expects one or no arguments."); | |
3d20ed6d LP |
294 | return EXIT_FAILURE; |
295 | } | |
296 | ||
27d340c7 | 297 | log_set_target(LOG_TARGET_AUTO); |
3d20ed6d LP |
298 | log_parse_environment(); |
299 | log_open(); | |
300 | ||
4c12626c LP |
301 | umask(0022); |
302 | ||
1d84ad94 | 303 | r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_STRIP_RD_PREFIX); |
e7a3aa3d LP |
304 | if (r < 0) |
305 | log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); | |
b5884878 | 306 | |
3d20ed6d LP |
307 | test_files(); |
308 | ||
566690fd LP |
309 | if (!arg_force && arg_skip) { |
310 | r = 0; | |
311 | goto finish; | |
312 | } | |
a9e1f5ec | 313 | |
dc8e15c2 | 314 | if (argc > 1) { |
a9e1f5ec | 315 | device = argv[1]; |
94192cda ZJS |
316 | |
317 | if (stat(device, &st) < 0) { | |
e7a3aa3d LP |
318 | r = log_error_errno(errno, "Failed to stat %s: %m", device); |
319 | goto finish; | |
320 | } | |
321 | ||
322 | if (!S_ISBLK(st.st_mode)) { | |
323 | log_error("%s is not a block device.", device); | |
324 | r = -EINVAL; | |
566690fd | 325 | goto finish; |
94192cda ZJS |
326 | } |
327 | ||
9102fdc5 TG |
328 | r = sd_device_new_from_devnum(&dev, 'b', st.st_rdev); |
329 | if (r < 0) { | |
330 | log_error_errno(r, "Failed to detect device %s: %m", device); | |
566690fd | 331 | goto finish; |
94192cda | 332 | } |
e7a3aa3d LP |
333 | |
334 | root_directory = false; | |
dc8e15c2 | 335 | } else { |
a84f5192 | 336 | struct timespec times[2]; |
3d20ed6d | 337 | |
a9e1f5ec LP |
338 | /* Find root device */ |
339 | ||
340 | if (stat("/", &st) < 0) { | |
566690fd LP |
341 | r = log_error_errno(errno, "Failed to stat() the root directory: %m"); |
342 | goto finish; | |
a9e1f5ec LP |
343 | } |
344 | ||
345 | /* Virtual root devices don't need an fsck */ | |
566690fd | 346 | if (major(st.st_dev) == 0) { |
e7a3aa3d | 347 | log_debug("Root directory is virtual or btrfs, skipping check."); |
566690fd LP |
348 | r = 0; |
349 | goto finish; | |
350 | } | |
a9e1f5ec | 351 | |
a84f5192 KS |
352 | /* check if we are already writable */ |
353 | times[0] = st.st_atim; | |
354 | times[1] = st.st_mtim; | |
e7a3aa3d | 355 | |
a84f5192 | 356 | if (utimensat(AT_FDCWD, "/", times, 0) == 0) { |
cf1a1055 | 357 | log_info("Root directory is writable, skipping check."); |
566690fd LP |
358 | r = 0; |
359 | goto finish; | |
a84f5192 KS |
360 | } |
361 | ||
9102fdc5 TG |
362 | r = sd_device_new_from_devnum(&dev, 'b', st.st_dev); |
363 | if (r < 0) { | |
364 | log_error_errno(r, "Failed to detect root device: %m"); | |
566690fd | 365 | goto finish; |
a9e1f5ec LP |
366 | } |
367 | ||
9102fdc5 TG |
368 | r = sd_device_get_devname(dev, &device); |
369 | if (r < 0) { | |
370 | log_error_errno(r, "Failed to detect device node of root directory: %m"); | |
566690fd | 371 | goto finish; |
3e33a44a | 372 | } |
dc8e15c2 LP |
373 | |
374 | root_directory = true; | |
3d20ed6d LP |
375 | } |
376 | ||
9102fdc5 TG |
377 | r = sd_device_get_property_value(dev, "ID_FS_TYPE", &type); |
378 | if (r >= 0) { | |
eb66db55 | 379 | r = fsck_exists(type); |
85eca92e LP |
380 | if (r < 0) |
381 | log_warning_errno(r, "Couldn't detect if fsck.%s may be used for %s, proceeding: %m", type, device); | |
382 | else if (r == 0) { | |
383 | log_info("fsck.%s doesn't exist, not checking file system on %s.", type, device); | |
566690fd | 384 | goto finish; |
85eca92e | 385 | } |
94192cda ZJS |
386 | } |
387 | ||
96d9117a LP |
388 | if (arg_show_progress) { |
389 | if (pipe(progress_pipe) < 0) { | |
390 | r = log_error_errno(errno, "pipe(): %m"); | |
391 | goto finish; | |
392 | } | |
19e887e7 | 393 | } |
27d340c7 | 394 | |
4c253ed1 LP |
395 | r = safe_fork("(fsck)", FORK_RESET_SIGNALS|FORK_DEATHSIG, &pid); |
396 | if (r < 0) { | |
397 | log_error_errno(r, "fork(): %m"); | |
3d20ed6d | 398 | goto finish; |
96d9117a | 399 | } |
4c253ed1 | 400 | if (r == 0) { |
fbd0b64f | 401 | char dash_c[STRLEN("-C") + DECIMAL_STR_MAX(int) + 1]; |
96d9117a LP |
402 | int progress_socket = -1; |
403 | const char *cmdline[9]; | |
404 | int i = 0; | |
405 | ||
3d20ed6d | 406 | /* Child */ |
96d9117a | 407 | |
96d9117a | 408 | /* Close the reading side of the progress pipe */ |
1952708a | 409 | progress_pipe[0] = safe_close(progress_pipe[0]); |
96d9117a LP |
410 | |
411 | /* Try to connect to a progress management daemon, if there is one */ | |
412 | progress_socket = fsck_progress_socket(); | |
413 | if (progress_socket >= 0) { | |
414 | /* If this worked we close the progress pipe early, and just use the socket */ | |
415 | progress_pipe[1] = safe_close(progress_pipe[1]); | |
416 | xsprintf(dash_c, "-C%i", progress_socket); | |
417 | } else if (progress_pipe[1] >= 0) { | |
418 | /* Otherwise if we have the progress pipe to our own local handle, we use it */ | |
419 | xsprintf(dash_c, "-C%i", progress_pipe[1]); | |
420 | } else | |
421 | dash_c[0] = 0; | |
422 | ||
423 | cmdline[i++] = "/sbin/fsck"; | |
424 | cmdline[i++] = arg_repair; | |
425 | cmdline[i++] = "-T"; | |
426 | ||
427 | /* | |
428 | * Since util-linux v2.25 fsck uses /run/fsck/<diskname>.lock files. | |
429 | * The previous versions use flock for the device and conflict with | |
430 | * udevd, see https://bugs.freedesktop.org/show_bug.cgi?id=79576#c5 | |
431 | */ | |
432 | cmdline[i++] = "-l"; | |
433 | ||
434 | if (!root_directory) | |
435 | cmdline[i++] = "-M"; | |
436 | ||
437 | if (arg_force) | |
438 | cmdline[i++] = "-f"; | |
439 | ||
440 | if (!isempty(dash_c)) | |
441 | cmdline[i++] = dash_c; | |
442 | ||
443 | cmdline[i++] = device; | |
444 | cmdline[i++] = NULL; | |
445 | ||
3d20ed6d | 446 | execv(cmdline[0], (char**) cmdline); |
91077af6 | 447 | _exit(FSCK_OPERATIONAL_ERROR); |
3d20ed6d LP |
448 | } |
449 | ||
03e334a1 | 450 | progress_pipe[1] = safe_close(progress_pipe[1]); |
96d9117a | 451 | (void) process_progress(progress_pipe[0]); |
576a13ea | 452 | progress_pipe[0] = -1; |
27d340c7 | 453 | |
566690fd LP |
454 | r = wait_for_terminate(pid, &status); |
455 | if (r < 0) { | |
456 | log_error_errno(r, "waitid(): %m"); | |
3d20ed6d LP |
457 | goto finish; |
458 | } | |
459 | ||
96d9117a | 460 | if (status.si_code != CLD_EXITED || (status.si_status & ~1)) { |
3d20ed6d | 461 | |
4c701096 | 462 | if (IN_SET(status.si_code, CLD_KILLED, CLD_DUMPED)) |
a9e1f5ec LP |
463 | log_error("fsck terminated by signal %s.", signal_to_string(status.si_status)); |
464 | else if (status.si_code == CLD_EXITED) | |
465 | log_error("fsck failed with error code %i.", status.si_status); | |
96d9117a | 466 | else |
a9e1f5ec | 467 | log_error("fsck failed due to unknown reason."); |
3d20ed6d | 468 | |
566690fd LP |
469 | r = -EINVAL; |
470 | ||
91077af6 | 471 | if (status.si_code == CLD_EXITED && (status.si_status & FSCK_SYSTEM_SHOULD_REBOOT) && root_directory) |
3d20ed6d | 472 | /* System should be rebooted. */ |
48db40b3 | 473 | start_target(SPECIAL_REBOOT_TARGET, "replace-irreversibly"); |
91077af6 | 474 | else if (status.si_code == CLD_EXITED && (status.si_status & (FSCK_SYSTEM_SHOULD_REBOOT | FSCK_ERRORS_LEFT_UNCORRECTED))) |
3d20ed6d | 475 | /* Some other problem */ |
48db40b3 | 476 | start_target(SPECIAL_EMERGENCY_TARGET, "replace"); |
a4c24ff7 | 477 | else { |
96d9117a | 478 | log_warning("Ignoring error."); |
566690fd | 479 | r = 0; |
a4c24ff7 | 480 | } |
3d20ed6d LP |
481 | |
482 | } else | |
566690fd | 483 | r = 0; |
3d20ed6d | 484 | |
91077af6 | 485 | if (status.si_code == CLD_EXITED && (status.si_status & FSCK_ERROR_CORRECTED)) |
e7a3aa3d | 486 | (void) touch("/run/systemd/quotacheck"); |
3d20ed6d LP |
487 | |
488 | finish: | |
566690fd | 489 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
3d20ed6d | 490 | } |