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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
3d20ed6d | 2 | /*** |
96b2fb93 | 3 | Copyright © 2014 Holger Hans Peter Freyther |
3d20ed6d LP |
4 | ***/ |
5 | ||
3d20ed6d | 6 | #include <errno.h> |
a84f5192 | 7 | #include <fcntl.h> |
cf0fbc49 TA |
8 | #include <stdbool.h> |
9 | #include <stdio.h> | |
27d340c7 | 10 | #include <sys/file.h> |
96d9117a | 11 | #include <sys/prctl.h> |
cf0fbc49 TA |
12 | #include <sys/stat.h> |
13 | #include <unistd.h> | |
3d20ed6d | 14 | |
0c842e0a | 15 | #include "sd-bus.h" |
9102fdc5 | 16 | #include "sd-device.h" |
3d20ed6d | 17 | |
b5efdb8a | 18 | #include "alloc-util.h" |
96aad8d1 | 19 | #include "bus-common-errors.h" |
3ffd4af2 LP |
20 | #include "bus-error.h" |
21 | #include "bus-util.h" | |
9102fdc5 | 22 | #include "device-util.h" |
3ffd4af2 | 23 | #include "fd-util.h" |
f4f15635 | 24 | #include "fs-util.h" |
6bedfcbb | 25 | #include "parse-util.h" |
eb66db55 | 26 | #include "path-util.h" |
4e731273 | 27 | #include "proc-cmdline.h" |
3ffd4af2 LP |
28 | #include "process-util.h" |
29 | #include "signal-util.h" | |
ac6e2f0d | 30 | #include "socket-util.h" |
3ffd4af2 | 31 | #include "special.h" |
15a5e950 | 32 | #include "stdio-util.h" |
3ffd4af2 | 33 | #include "util.h" |
3d20ed6d | 34 | |
91077af6 TA |
35 | /* exit codes as defined in fsck(8) */ |
36 | enum { | |
37 | FSCK_SUCCESS = 0, | |
38 | FSCK_ERROR_CORRECTED = 1, | |
39 | FSCK_SYSTEM_SHOULD_REBOOT = 2, | |
40 | FSCK_ERRORS_LEFT_UNCORRECTED = 4, | |
41 | FSCK_OPERATIONAL_ERROR = 8, | |
42 | FSCK_USAGE_OR_SYNTAX_ERROR = 16, | |
43 | FSCK_USER_CANCELLED = 32, | |
44 | FSCK_SHARED_LIB_ERROR = 128, | |
45 | }; | |
46 | ||
3d20ed6d LP |
47 | static bool arg_skip = false; |
48 | static bool arg_force = false; | |
96d9117a | 49 | static bool arg_show_progress = false; |
f1f0198c | 50 | static const char *arg_repair = "-a"; |
3d20ed6d | 51 | |
48db40b3 | 52 | static void start_target(const char *target, const char *mode) { |
4afd3348 LP |
53 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
54 | _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; | |
0c842e0a | 55 | int r; |
3d20ed6d LP |
56 | |
57 | assert(target); | |
58 | ||
266f3e26 | 59 | r = bus_connect_system_systemd(&bus); |
0c842e0a | 60 | if (r < 0) { |
da927ba9 | 61 | log_error_errno(r, "Failed to get D-Bus connection: %m"); |
0c842e0a | 62 | return; |
3d20ed6d LP |
63 | } |
64 | ||
0c842e0a | 65 | log_info("Running request %s/start/replace", target); |
3d20ed6d | 66 | |
90bb85e1 | 67 | /* Start these units only if we can replace base.target with it */ |
0c842e0a TG |
68 | r = sd_bus_call_method(bus, |
69 | "org.freedesktop.systemd1", | |
70 | "/org/freedesktop/systemd1", | |
71 | "org.freedesktop.systemd1.Manager", | |
72 | "StartUnitReplace", | |
73 | &error, | |
74 | NULL, | |
48db40b3 | 75 | "sss", "basic.target", target, mode); |
3d20ed6d | 76 | |
5220a6f3 LP |
77 | /* Don't print a warning if we aren't called during startup */ |
78 | if (r < 0 && !sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_JOB)) | |
24b52437 | 79 | log_error("Failed to start unit: %s", bus_error_message(&error, r)); |
3d20ed6d LP |
80 | } |
81 | ||
96287a49 | 82 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
24b52437 LP |
83 | int r; |
84 | ||
85 | assert(key); | |
059cb385 | 86 | |
1d84ad94 LP |
87 | if (streq(key, "fsck.mode")) { |
88 | ||
89 | if (proc_cmdline_value_missing(key, value)) | |
90 | return 0; | |
059cb385 LP |
91 | |
92 | if (streq(value, "auto")) | |
93 | arg_force = arg_skip = false; | |
94 | else if (streq(value, "force")) | |
95 | arg_force = true; | |
96 | else if (streq(value, "skip")) | |
97 | arg_skip = true; | |
98 | else | |
85013844 LP |
99 | log_warning("Invalid fsck.mode= parameter '%s'. Ignoring.", value); |
100 | ||
1d84ad94 LP |
101 | } else if (streq(key, "fsck.repair")) { |
102 | ||
103 | if (proc_cmdline_value_missing(key, value)) | |
104 | return 0; | |
f1f0198c HHPF |
105 | |
106 | if (streq(value, "preen")) | |
107 | arg_repair = "-a"; | |
24b52437 LP |
108 | else { |
109 | r = parse_boolean(value); | |
110 | if (r > 0) | |
111 | arg_repair = "-y"; | |
112 | else if (r == 0) | |
113 | arg_repair = "-n"; | |
114 | else | |
115 | log_warning("Invalid fsck.repair= parameter '%s'. Ignoring.", value); | |
116 | } | |
85013844 LP |
117 | } |
118 | ||
349cc4a5 | 119 | #if HAVE_SYSV_COMPAT |
059cb385 LP |
120 | else if (streq(key, "fastboot") && !value) { |
121 | log_warning("Please pass 'fsck.mode=skip' rather than 'fastboot' on the kernel command line."); | |
141a79f4 | 122 | arg_skip = true; |
85013844 | 123 | |
059cb385 LP |
124 | } else if (streq(key, "forcefsck") && !value) { |
125 | log_warning("Please pass 'fsck.mode=force' rather than 'forcefsck' on the kernel command line."); | |
141a79f4 | 126 | arg_force = true; |
3d20ed6d | 127 | } |
141a79f4 | 128 | #endif |
3d20ed6d | 129 | |
3d20ed6d LP |
130 | return 0; |
131 | } | |
132 | ||
133 | static void test_files(void) { | |
85013844 | 134 | |
349cc4a5 | 135 | #if HAVE_SYSV_COMPAT |
32f992a5 LP |
136 | if (access("/fastboot", F_OK) >= 0) { |
137 | log_error("Please pass 'fsck.mode=skip' on the kernel command line rather than creating /fastboot on the root file system."); | |
3d20ed6d | 138 | arg_skip = true; |
32f992a5 | 139 | } |
3d20ed6d | 140 | |
32f992a5 LP |
141 | if (access("/forcefsck", F_OK) >= 0) { |
142 | log_error("Please pass 'fsck.mode=force' on the kernel command line rather than creating /forcefsck on the root file system."); | |
3d20ed6d | 143 | arg_force = true; |
32f992a5 LP |
144 | } |
145 | #endif | |
27d340c7 | 146 | |
96d9117a | 147 | arg_show_progress = access("/run/systemd/show-status", F_OK) >= 0; |
27d340c7 LP |
148 | } |
149 | ||
96d9117a LP |
150 | static double percent(int pass, unsigned long cur, unsigned long max) { |
151 | /* Values stolen from e2fsck */ | |
152 | ||
153 | static const int pass_table[] = { | |
154 | 0, 70, 90, 92, 95, 100 | |
27d340c7 LP |
155 | }; |
156 | ||
96d9117a LP |
157 | if (pass <= 0) |
158 | return 0.0; | |
159 | ||
160 | if ((unsigned) pass >= ELEMENTSOF(pass_table) || max == 0) | |
161 | return 100.0; | |
162 | ||
163 | return (double) pass_table[pass-1] + | |
164 | ((double) pass_table[pass] - (double) pass_table[pass-1]) * | |
165 | (double) cur / (double) max; | |
166 | } | |
167 | ||
168 | static int process_progress(int fd) { | |
169 | _cleanup_fclose_ FILE *console = NULL, *f = NULL; | |
170 | usec_t last = 0; | |
171 | bool locked = false; | |
172 | int clear = 0, r; | |
173 | ||
174 | /* No progress pipe to process? Then we are a NOP. */ | |
175 | if (fd < 0) | |
176 | return 0; | |
177 | ||
178 | f = fdopen(fd, "re"); | |
179 | if (!f) { | |
180 | safe_close(fd); | |
181 | return -errno; | |
182 | } | |
183 | ||
184 | console = fopen("/dev/console", "we"); | |
185 | if (!console) | |
186 | return -ENOMEM; | |
187 | ||
188 | for (;;) { | |
189 | int pass, m; | |
190 | unsigned long cur, max; | |
ac6e2f0d | 191 | _cleanup_free_ char *device = NULL; |
96d9117a LP |
192 | double p; |
193 | usec_t t; | |
27d340c7 | 194 | |
96d9117a LP |
195 | if (fscanf(f, "%i %lu %lu %ms", &pass, &cur, &max, &device) != 4) { |
196 | ||
197 | if (ferror(f)) | |
198 | r = log_warning_errno(errno, "Failed to read from progress pipe: %m"); | |
199 | else if (feof(f)) | |
200 | r = 0; | |
201 | else { | |
202 | log_warning("Failed to parse progress pipe data"); | |
203 | r = -EBADMSG; | |
204 | } | |
27d340c7 | 205 | break; |
96d9117a LP |
206 | } |
207 | ||
208 | /* Only show one progress counter at max */ | |
209 | if (!locked) { | |
210 | if (flock(fileno(console), LOCK_EX|LOCK_NB) < 0) | |
211 | continue; | |
212 | ||
213 | locked = true; | |
214 | } | |
27d340c7 | 215 | |
27d340c7 LP |
216 | /* Only update once every 50ms */ |
217 | t = now(CLOCK_MONOTONIC); | |
e375825d | 218 | if (last + 50 * USEC_PER_MSEC > t) |
27d340c7 | 219 | continue; |
27d340c7 LP |
220 | |
221 | last = t; | |
222 | ||
96d9117a LP |
223 | p = percent(pass, cur, max); |
224 | fprintf(console, "\r%s: fsck %3.1f%% complete...\r%n", device, p, &m); | |
225 | fflush(console); | |
226 | ||
227 | if (m > clear) | |
228 | clear = m; | |
27d340c7 LP |
229 | } |
230 | ||
96d9117a LP |
231 | if (clear > 0) { |
232 | unsigned j; | |
233 | ||
234 | fputc('\r', console); | |
235 | for (j = 0; j < (unsigned) clear; j++) | |
236 | fputc(' ', console); | |
237 | fputc('\r', console); | |
238 | fflush(console); | |
239 | } | |
240 | ||
241 | return r; | |
242 | } | |
243 | ||
244 | static int fsck_progress_socket(void) { | |
245 | static const union sockaddr_union sa = { | |
246 | .un.sun_family = AF_UNIX, | |
247 | .un.sun_path = "/run/systemd/fsck.progress", | |
248 | }; | |
249 | ||
250 | int fd, r; | |
251 | ||
252 | fd = socket(AF_UNIX, SOCK_STREAM, 0); | |
253 | if (fd < 0) | |
254 | return log_warning_errno(errno, "socket(): %m"); | |
255 | ||
fc2fffe7 | 256 | if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
3742095b | 257 | r = log_full_errno(IN_SET(errno, ECONNREFUSED, ENOENT) ? LOG_DEBUG : LOG_WARNING, |
96d9117a LP |
258 | errno, "Failed to connect to progress socket %s, ignoring: %m", sa.un.sun_path); |
259 | safe_close(fd); | |
260 | return r; | |
261 | } | |
262 | ||
263 | return fd; | |
3d20ed6d LP |
264 | } |
265 | ||
266 | int main(int argc, char *argv[]) { | |
96d9117a | 267 | _cleanup_close_pair_ int progress_pipe[2] = { -1, -1 }; |
4afd3348 | 268 | _cleanup_(sd_device_unrefp) sd_device *dev = NULL; |
94192cda | 269 | const char *device, *type; |
dc8e15c2 | 270 | bool root_directory; |
94192cda | 271 | struct stat st; |
2e87a1fd | 272 | int r, exit_status; |
96d9117a | 273 | pid_t pid; |
3d20ed6d | 274 | |
a9e1f5ec LP |
275 | if (argc > 2) { |
276 | log_error("This program expects one or no arguments."); | |
3d20ed6d LP |
277 | return EXIT_FAILURE; |
278 | } | |
279 | ||
27d340c7 | 280 | log_set_target(LOG_TARGET_AUTO); |
3d20ed6d LP |
281 | log_parse_environment(); |
282 | log_open(); | |
283 | ||
4c12626c LP |
284 | umask(0022); |
285 | ||
1d84ad94 | 286 | r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_STRIP_RD_PREFIX); |
e7a3aa3d LP |
287 | if (r < 0) |
288 | log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); | |
b5884878 | 289 | |
3d20ed6d LP |
290 | test_files(); |
291 | ||
566690fd LP |
292 | if (!arg_force && arg_skip) { |
293 | r = 0; | |
294 | goto finish; | |
295 | } | |
a9e1f5ec | 296 | |
dc8e15c2 | 297 | if (argc > 1) { |
a9e1f5ec | 298 | device = argv[1]; |
94192cda ZJS |
299 | |
300 | if (stat(device, &st) < 0) { | |
e7a3aa3d LP |
301 | r = log_error_errno(errno, "Failed to stat %s: %m", device); |
302 | goto finish; | |
303 | } | |
304 | ||
305 | if (!S_ISBLK(st.st_mode)) { | |
306 | log_error("%s is not a block device.", device); | |
307 | r = -EINVAL; | |
566690fd | 308 | goto finish; |
94192cda ZJS |
309 | } |
310 | ||
9102fdc5 TG |
311 | r = sd_device_new_from_devnum(&dev, 'b', st.st_rdev); |
312 | if (r < 0) { | |
313 | log_error_errno(r, "Failed to detect device %s: %m", device); | |
566690fd | 314 | goto finish; |
94192cda | 315 | } |
e7a3aa3d LP |
316 | |
317 | root_directory = false; | |
dc8e15c2 | 318 | } else { |
a84f5192 | 319 | struct timespec times[2]; |
3d20ed6d | 320 | |
a9e1f5ec LP |
321 | /* Find root device */ |
322 | ||
323 | if (stat("/", &st) < 0) { | |
566690fd LP |
324 | r = log_error_errno(errno, "Failed to stat() the root directory: %m"); |
325 | goto finish; | |
a9e1f5ec LP |
326 | } |
327 | ||
328 | /* Virtual root devices don't need an fsck */ | |
566690fd | 329 | if (major(st.st_dev) == 0) { |
e7a3aa3d | 330 | log_debug("Root directory is virtual or btrfs, skipping check."); |
566690fd LP |
331 | r = 0; |
332 | goto finish; | |
333 | } | |
a9e1f5ec | 334 | |
a84f5192 KS |
335 | /* check if we are already writable */ |
336 | times[0] = st.st_atim; | |
337 | times[1] = st.st_mtim; | |
e7a3aa3d | 338 | |
a84f5192 | 339 | if (utimensat(AT_FDCWD, "/", times, 0) == 0) { |
cf1a1055 | 340 | log_info("Root directory is writable, skipping check."); |
566690fd LP |
341 | r = 0; |
342 | goto finish; | |
a84f5192 KS |
343 | } |
344 | ||
9102fdc5 TG |
345 | r = sd_device_new_from_devnum(&dev, 'b', st.st_dev); |
346 | if (r < 0) { | |
347 | log_error_errno(r, "Failed to detect root device: %m"); | |
566690fd | 348 | goto finish; |
a9e1f5ec LP |
349 | } |
350 | ||
9102fdc5 TG |
351 | r = sd_device_get_devname(dev, &device); |
352 | if (r < 0) { | |
353 | log_error_errno(r, "Failed to detect device node of root directory: %m"); | |
566690fd | 354 | goto finish; |
3e33a44a | 355 | } |
dc8e15c2 LP |
356 | |
357 | root_directory = true; | |
3d20ed6d LP |
358 | } |
359 | ||
9102fdc5 TG |
360 | r = sd_device_get_property_value(dev, "ID_FS_TYPE", &type); |
361 | if (r >= 0) { | |
eb66db55 | 362 | r = fsck_exists(type); |
85eca92e LP |
363 | if (r < 0) |
364 | log_warning_errno(r, "Couldn't detect if fsck.%s may be used for %s, proceeding: %m", type, device); | |
365 | else if (r == 0) { | |
366 | log_info("fsck.%s doesn't exist, not checking file system on %s.", type, device); | |
566690fd | 367 | goto finish; |
85eca92e | 368 | } |
94192cda ZJS |
369 | } |
370 | ||
96d9117a LP |
371 | if (arg_show_progress) { |
372 | if (pipe(progress_pipe) < 0) { | |
373 | r = log_error_errno(errno, "pipe(): %m"); | |
374 | goto finish; | |
375 | } | |
19e887e7 | 376 | } |
27d340c7 | 377 | |
b6e1fff1 LP |
378 | r = safe_fork("(fsck)", FORK_RESET_SIGNALS|FORK_DEATHSIG|FORK_LOG, &pid); |
379 | if (r < 0) | |
3d20ed6d | 380 | goto finish; |
4c253ed1 | 381 | if (r == 0) { |
fbd0b64f | 382 | char dash_c[STRLEN("-C") + DECIMAL_STR_MAX(int) + 1]; |
96d9117a LP |
383 | int progress_socket = -1; |
384 | const char *cmdline[9]; | |
385 | int i = 0; | |
386 | ||
3d20ed6d | 387 | /* Child */ |
96d9117a | 388 | |
96d9117a | 389 | /* Close the reading side of the progress pipe */ |
1952708a | 390 | progress_pipe[0] = safe_close(progress_pipe[0]); |
96d9117a LP |
391 | |
392 | /* Try to connect to a progress management daemon, if there is one */ | |
393 | progress_socket = fsck_progress_socket(); | |
394 | if (progress_socket >= 0) { | |
395 | /* If this worked we close the progress pipe early, and just use the socket */ | |
396 | progress_pipe[1] = safe_close(progress_pipe[1]); | |
397 | xsprintf(dash_c, "-C%i", progress_socket); | |
398 | } else if (progress_pipe[1] >= 0) { | |
399 | /* Otherwise if we have the progress pipe to our own local handle, we use it */ | |
400 | xsprintf(dash_c, "-C%i", progress_pipe[1]); | |
401 | } else | |
402 | dash_c[0] = 0; | |
403 | ||
404 | cmdline[i++] = "/sbin/fsck"; | |
405 | cmdline[i++] = arg_repair; | |
406 | cmdline[i++] = "-T"; | |
407 | ||
408 | /* | |
409 | * Since util-linux v2.25 fsck uses /run/fsck/<diskname>.lock files. | |
410 | * The previous versions use flock for the device and conflict with | |
411 | * udevd, see https://bugs.freedesktop.org/show_bug.cgi?id=79576#c5 | |
412 | */ | |
413 | cmdline[i++] = "-l"; | |
414 | ||
415 | if (!root_directory) | |
416 | cmdline[i++] = "-M"; | |
417 | ||
418 | if (arg_force) | |
419 | cmdline[i++] = "-f"; | |
420 | ||
421 | if (!isempty(dash_c)) | |
422 | cmdline[i++] = dash_c; | |
423 | ||
424 | cmdline[i++] = device; | |
425 | cmdline[i++] = NULL; | |
426 | ||
3d20ed6d | 427 | execv(cmdline[0], (char**) cmdline); |
91077af6 | 428 | _exit(FSCK_OPERATIONAL_ERROR); |
3d20ed6d LP |
429 | } |
430 | ||
03e334a1 | 431 | progress_pipe[1] = safe_close(progress_pipe[1]); |
96d9117a | 432 | (void) process_progress(progress_pipe[0]); |
576a13ea | 433 | progress_pipe[0] = -1; |
27d340c7 | 434 | |
2e87a1fd LP |
435 | exit_status = wait_for_terminate_and_check("fsck", pid, WAIT_LOG_ABNORMAL); |
436 | if (exit_status < 0) { | |
437 | r = exit_status; | |
3d20ed6d LP |
438 | goto finish; |
439 | } | |
2e87a1fd LP |
440 | if (exit_status & ~1) { |
441 | log_error("fsck failed with exit status %i.", exit_status); | |
3d20ed6d | 442 | |
2e87a1fd | 443 | if ((exit_status & FSCK_SYSTEM_SHOULD_REBOOT) && root_directory) { |
3d20ed6d | 444 | /* System should be rebooted. */ |
48db40b3 | 445 | start_target(SPECIAL_REBOOT_TARGET, "replace-irreversibly"); |
2e87a1fd LP |
446 | r = -EINVAL; |
447 | } else if (exit_status & (FSCK_SYSTEM_SHOULD_REBOOT | FSCK_ERRORS_LEFT_UNCORRECTED)) { | |
3d20ed6d | 448 | /* Some other problem */ |
48db40b3 | 449 | start_target(SPECIAL_EMERGENCY_TARGET, "replace"); |
2e87a1fd LP |
450 | r = -EINVAL; |
451 | } else { | |
96d9117a | 452 | log_warning("Ignoring error."); |
566690fd | 453 | r = 0; |
a4c24ff7 | 454 | } |
3d20ed6d | 455 | } else |
566690fd | 456 | r = 0; |
3d20ed6d | 457 | |
2e87a1fd | 458 | if (exit_status & FSCK_ERROR_CORRECTED) |
e7a3aa3d | 459 | (void) touch("/run/systemd/quotacheck"); |
3d20ed6d LP |
460 | |
461 | finish: | |
566690fd | 462 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
3d20ed6d | 463 | } |