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Commit | Line | Data |
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3d20ed6d LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2010 Lennart Poettering | |
f1f0198c | 5 | Copyright 2014 Holger Hans Peter Freyther |
3d20ed6d LP |
6 | |
7 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
8 | under the terms of the GNU Lesser General Public License as published by |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
3d20ed6d LP |
10 | (at your option) any later version. |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 15 | Lesser General Public License for more details. |
3d20ed6d | 16 | |
5430f7f2 | 17 | You should have received a copy of the GNU Lesser General Public License |
3d20ed6d LP |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
19 | ***/ | |
20 | ||
3d20ed6d | 21 | #include <errno.h> |
a84f5192 | 22 | #include <fcntl.h> |
cf0fbc49 TA |
23 | #include <stdbool.h> |
24 | #include <stdio.h> | |
27d340c7 | 25 | #include <sys/file.h> |
96d9117a | 26 | #include <sys/prctl.h> |
cf0fbc49 TA |
27 | #include <sys/stat.h> |
28 | #include <unistd.h> | |
3d20ed6d | 29 | |
0c842e0a | 30 | #include "sd-bus.h" |
9102fdc5 | 31 | #include "sd-device.h" |
3d20ed6d | 32 | |
b5efdb8a | 33 | #include "alloc-util.h" |
96aad8d1 | 34 | #include "bus-common-errors.h" |
3ffd4af2 LP |
35 | #include "bus-error.h" |
36 | #include "bus-util.h" | |
9102fdc5 | 37 | #include "device-util.h" |
3ffd4af2 | 38 | #include "fd-util.h" |
f4f15635 | 39 | #include "fs-util.h" |
6bedfcbb | 40 | #include "parse-util.h" |
eb66db55 | 41 | #include "path-util.h" |
4e731273 | 42 | #include "proc-cmdline.h" |
3ffd4af2 LP |
43 | #include "process-util.h" |
44 | #include "signal-util.h" | |
ac6e2f0d | 45 | #include "socket-util.h" |
3ffd4af2 | 46 | #include "special.h" |
15a5e950 | 47 | #include "stdio-util.h" |
3ffd4af2 | 48 | #include "util.h" |
3d20ed6d | 49 | |
91077af6 TA |
50 | /* exit codes as defined in fsck(8) */ |
51 | enum { | |
52 | FSCK_SUCCESS = 0, | |
53 | FSCK_ERROR_CORRECTED = 1, | |
54 | FSCK_SYSTEM_SHOULD_REBOOT = 2, | |
55 | FSCK_ERRORS_LEFT_UNCORRECTED = 4, | |
56 | FSCK_OPERATIONAL_ERROR = 8, | |
57 | FSCK_USAGE_OR_SYNTAX_ERROR = 16, | |
58 | FSCK_USER_CANCELLED = 32, | |
59 | FSCK_SHARED_LIB_ERROR = 128, | |
60 | }; | |
61 | ||
3d20ed6d LP |
62 | static bool arg_skip = false; |
63 | static bool arg_force = false; | |
96d9117a | 64 | static bool arg_show_progress = false; |
f1f0198c | 65 | static const char *arg_repair = "-a"; |
3d20ed6d | 66 | |
48db40b3 | 67 | static void start_target(const char *target, const char *mode) { |
4afd3348 LP |
68 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
69 | _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; | |
0c842e0a | 70 | int r; |
3d20ed6d LP |
71 | |
72 | assert(target); | |
73 | ||
266f3e26 | 74 | r = bus_connect_system_systemd(&bus); |
0c842e0a | 75 | if (r < 0) { |
da927ba9 | 76 | log_error_errno(r, "Failed to get D-Bus connection: %m"); |
0c842e0a | 77 | return; |
3d20ed6d LP |
78 | } |
79 | ||
0c842e0a | 80 | log_info("Running request %s/start/replace", target); |
3d20ed6d | 81 | |
90bb85e1 | 82 | /* Start these units only if we can replace base.target with it */ |
0c842e0a TG |
83 | r = sd_bus_call_method(bus, |
84 | "org.freedesktop.systemd1", | |
85 | "/org/freedesktop/systemd1", | |
86 | "org.freedesktop.systemd1.Manager", | |
87 | "StartUnitReplace", | |
88 | &error, | |
89 | NULL, | |
48db40b3 | 90 | "sss", "basic.target", target, mode); |
3d20ed6d | 91 | |
5220a6f3 LP |
92 | /* Don't print a warning if we aren't called during startup */ |
93 | if (r < 0 && !sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_JOB)) | |
24b52437 | 94 | log_error("Failed to start unit: %s", bus_error_message(&error, r)); |
3d20ed6d LP |
95 | } |
96 | ||
96287a49 | 97 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
24b52437 LP |
98 | int r; |
99 | ||
100 | assert(key); | |
059cb385 | 101 | |
1d84ad94 LP |
102 | if (streq(key, "fsck.mode")) { |
103 | ||
104 | if (proc_cmdline_value_missing(key, value)) | |
105 | return 0; | |
059cb385 LP |
106 | |
107 | if (streq(value, "auto")) | |
108 | arg_force = arg_skip = false; | |
109 | else if (streq(value, "force")) | |
110 | arg_force = true; | |
111 | else if (streq(value, "skip")) | |
112 | arg_skip = true; | |
113 | else | |
85013844 LP |
114 | log_warning("Invalid fsck.mode= parameter '%s'. Ignoring.", value); |
115 | ||
1d84ad94 LP |
116 | } else if (streq(key, "fsck.repair")) { |
117 | ||
118 | if (proc_cmdline_value_missing(key, value)) | |
119 | return 0; | |
f1f0198c HHPF |
120 | |
121 | if (streq(value, "preen")) | |
122 | arg_repair = "-a"; | |
24b52437 LP |
123 | else { |
124 | r = parse_boolean(value); | |
125 | if (r > 0) | |
126 | arg_repair = "-y"; | |
127 | else if (r == 0) | |
128 | arg_repair = "-n"; | |
129 | else | |
130 | log_warning("Invalid fsck.repair= parameter '%s'. Ignoring.", value); | |
131 | } | |
85013844 LP |
132 | } |
133 | ||
32f992a5 | 134 | #ifdef HAVE_SYSV_COMPAT |
059cb385 LP |
135 | else if (streq(key, "fastboot") && !value) { |
136 | log_warning("Please pass 'fsck.mode=skip' rather than 'fastboot' on the kernel command line."); | |
141a79f4 | 137 | arg_skip = true; |
85013844 | 138 | |
059cb385 LP |
139 | } else if (streq(key, "forcefsck") && !value) { |
140 | log_warning("Please pass 'fsck.mode=force' rather than 'forcefsck' on the kernel command line."); | |
141a79f4 | 141 | arg_force = true; |
3d20ed6d | 142 | } |
141a79f4 | 143 | #endif |
3d20ed6d | 144 | |
3d20ed6d LP |
145 | return 0; |
146 | } | |
147 | ||
148 | static void test_files(void) { | |
85013844 | 149 | |
32f992a5 LP |
150 | #ifdef HAVE_SYSV_COMPAT |
151 | if (access("/fastboot", F_OK) >= 0) { | |
152 | log_error("Please pass 'fsck.mode=skip' on the kernel command line rather than creating /fastboot on the root file system."); | |
3d20ed6d | 153 | arg_skip = true; |
32f992a5 | 154 | } |
3d20ed6d | 155 | |
32f992a5 LP |
156 | if (access("/forcefsck", F_OK) >= 0) { |
157 | log_error("Please pass 'fsck.mode=force' on the kernel command line rather than creating /forcefsck on the root file system."); | |
3d20ed6d | 158 | arg_force = true; |
32f992a5 LP |
159 | } |
160 | #endif | |
27d340c7 | 161 | |
96d9117a | 162 | arg_show_progress = access("/run/systemd/show-status", F_OK) >= 0; |
27d340c7 LP |
163 | } |
164 | ||
96d9117a LP |
165 | static double percent(int pass, unsigned long cur, unsigned long max) { |
166 | /* Values stolen from e2fsck */ | |
167 | ||
168 | static const int pass_table[] = { | |
169 | 0, 70, 90, 92, 95, 100 | |
27d340c7 LP |
170 | }; |
171 | ||
96d9117a LP |
172 | if (pass <= 0) |
173 | return 0.0; | |
174 | ||
175 | if ((unsigned) pass >= ELEMENTSOF(pass_table) || max == 0) | |
176 | return 100.0; | |
177 | ||
178 | return (double) pass_table[pass-1] + | |
179 | ((double) pass_table[pass] - (double) pass_table[pass-1]) * | |
180 | (double) cur / (double) max; | |
181 | } | |
182 | ||
183 | static int process_progress(int fd) { | |
184 | _cleanup_fclose_ FILE *console = NULL, *f = NULL; | |
185 | usec_t last = 0; | |
186 | bool locked = false; | |
187 | int clear = 0, r; | |
188 | ||
189 | /* No progress pipe to process? Then we are a NOP. */ | |
190 | if (fd < 0) | |
191 | return 0; | |
192 | ||
193 | f = fdopen(fd, "re"); | |
194 | if (!f) { | |
195 | safe_close(fd); | |
196 | return -errno; | |
197 | } | |
198 | ||
199 | console = fopen("/dev/console", "we"); | |
200 | if (!console) | |
201 | return -ENOMEM; | |
202 | ||
203 | for (;;) { | |
204 | int pass, m; | |
205 | unsigned long cur, max; | |
ac6e2f0d | 206 | _cleanup_free_ char *device = NULL; |
96d9117a LP |
207 | double p; |
208 | usec_t t; | |
27d340c7 | 209 | |
96d9117a LP |
210 | if (fscanf(f, "%i %lu %lu %ms", &pass, &cur, &max, &device) != 4) { |
211 | ||
212 | if (ferror(f)) | |
213 | r = log_warning_errno(errno, "Failed to read from progress pipe: %m"); | |
214 | else if (feof(f)) | |
215 | r = 0; | |
216 | else { | |
217 | log_warning("Failed to parse progress pipe data"); | |
218 | r = -EBADMSG; | |
219 | } | |
27d340c7 | 220 | break; |
96d9117a LP |
221 | } |
222 | ||
223 | /* Only show one progress counter at max */ | |
224 | if (!locked) { | |
225 | if (flock(fileno(console), LOCK_EX|LOCK_NB) < 0) | |
226 | continue; | |
227 | ||
228 | locked = true; | |
229 | } | |
27d340c7 | 230 | |
27d340c7 LP |
231 | /* Only update once every 50ms */ |
232 | t = now(CLOCK_MONOTONIC); | |
e375825d | 233 | if (last + 50 * USEC_PER_MSEC > t) |
27d340c7 | 234 | continue; |
27d340c7 LP |
235 | |
236 | last = t; | |
237 | ||
96d9117a LP |
238 | p = percent(pass, cur, max); |
239 | fprintf(console, "\r%s: fsck %3.1f%% complete...\r%n", device, p, &m); | |
240 | fflush(console); | |
241 | ||
242 | if (m > clear) | |
243 | clear = m; | |
27d340c7 LP |
244 | } |
245 | ||
96d9117a LP |
246 | if (clear > 0) { |
247 | unsigned j; | |
248 | ||
249 | fputc('\r', console); | |
250 | for (j = 0; j < (unsigned) clear; j++) | |
251 | fputc(' ', console); | |
252 | fputc('\r', console); | |
253 | fflush(console); | |
254 | } | |
255 | ||
256 | return r; | |
257 | } | |
258 | ||
259 | static int fsck_progress_socket(void) { | |
260 | static const union sockaddr_union sa = { | |
261 | .un.sun_family = AF_UNIX, | |
262 | .un.sun_path = "/run/systemd/fsck.progress", | |
263 | }; | |
264 | ||
265 | int fd, r; | |
266 | ||
267 | fd = socket(AF_UNIX, SOCK_STREAM, 0); | |
268 | if (fd < 0) | |
269 | return log_warning_errno(errno, "socket(): %m"); | |
270 | ||
fc2fffe7 | 271 | if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
3742095b | 272 | r = log_full_errno(IN_SET(errno, ECONNREFUSED, ENOENT) ? LOG_DEBUG : LOG_WARNING, |
96d9117a LP |
273 | errno, "Failed to connect to progress socket %s, ignoring: %m", sa.un.sun_path); |
274 | safe_close(fd); | |
275 | return r; | |
276 | } | |
277 | ||
278 | return fd; | |
3d20ed6d LP |
279 | } |
280 | ||
281 | int main(int argc, char *argv[]) { | |
96d9117a | 282 | _cleanup_close_pair_ int progress_pipe[2] = { -1, -1 }; |
4afd3348 | 283 | _cleanup_(sd_device_unrefp) sd_device *dev = NULL; |
94192cda | 284 | const char *device, *type; |
dc8e15c2 | 285 | bool root_directory; |
96d9117a | 286 | siginfo_t status; |
94192cda | 287 | struct stat st; |
96d9117a LP |
288 | int r; |
289 | pid_t pid; | |
3d20ed6d | 290 | |
a9e1f5ec LP |
291 | if (argc > 2) { |
292 | log_error("This program expects one or no arguments."); | |
3d20ed6d LP |
293 | return EXIT_FAILURE; |
294 | } | |
295 | ||
27d340c7 | 296 | log_set_target(LOG_TARGET_AUTO); |
3d20ed6d LP |
297 | log_parse_environment(); |
298 | log_open(); | |
299 | ||
4c12626c LP |
300 | umask(0022); |
301 | ||
1d84ad94 | 302 | r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_STRIP_RD_PREFIX); |
e7a3aa3d LP |
303 | if (r < 0) |
304 | log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); | |
b5884878 | 305 | |
3d20ed6d LP |
306 | test_files(); |
307 | ||
566690fd LP |
308 | if (!arg_force && arg_skip) { |
309 | r = 0; | |
310 | goto finish; | |
311 | } | |
a9e1f5ec | 312 | |
dc8e15c2 | 313 | if (argc > 1) { |
a9e1f5ec | 314 | device = argv[1]; |
94192cda ZJS |
315 | |
316 | if (stat(device, &st) < 0) { | |
e7a3aa3d LP |
317 | r = log_error_errno(errno, "Failed to stat %s: %m", device); |
318 | goto finish; | |
319 | } | |
320 | ||
321 | if (!S_ISBLK(st.st_mode)) { | |
322 | log_error("%s is not a block device.", device); | |
323 | r = -EINVAL; | |
566690fd | 324 | goto finish; |
94192cda ZJS |
325 | } |
326 | ||
9102fdc5 TG |
327 | r = sd_device_new_from_devnum(&dev, 'b', st.st_rdev); |
328 | if (r < 0) { | |
329 | log_error_errno(r, "Failed to detect device %s: %m", device); | |
566690fd | 330 | goto finish; |
94192cda | 331 | } |
e7a3aa3d LP |
332 | |
333 | root_directory = false; | |
dc8e15c2 | 334 | } else { |
a84f5192 | 335 | struct timespec times[2]; |
3d20ed6d | 336 | |
a9e1f5ec LP |
337 | /* Find root device */ |
338 | ||
339 | if (stat("/", &st) < 0) { | |
566690fd LP |
340 | r = log_error_errno(errno, "Failed to stat() the root directory: %m"); |
341 | goto finish; | |
a9e1f5ec LP |
342 | } |
343 | ||
344 | /* Virtual root devices don't need an fsck */ | |
566690fd | 345 | if (major(st.st_dev) == 0) { |
e7a3aa3d | 346 | log_debug("Root directory is virtual or btrfs, skipping check."); |
566690fd LP |
347 | r = 0; |
348 | goto finish; | |
349 | } | |
a9e1f5ec | 350 | |
a84f5192 KS |
351 | /* check if we are already writable */ |
352 | times[0] = st.st_atim; | |
353 | times[1] = st.st_mtim; | |
e7a3aa3d | 354 | |
a84f5192 | 355 | if (utimensat(AT_FDCWD, "/", times, 0) == 0) { |
cf1a1055 | 356 | log_info("Root directory is writable, skipping check."); |
566690fd LP |
357 | r = 0; |
358 | goto finish; | |
a84f5192 KS |
359 | } |
360 | ||
9102fdc5 TG |
361 | r = sd_device_new_from_devnum(&dev, 'b', st.st_dev); |
362 | if (r < 0) { | |
363 | log_error_errno(r, "Failed to detect root device: %m"); | |
566690fd | 364 | goto finish; |
a9e1f5ec LP |
365 | } |
366 | ||
9102fdc5 TG |
367 | r = sd_device_get_devname(dev, &device); |
368 | if (r < 0) { | |
369 | log_error_errno(r, "Failed to detect device node of root directory: %m"); | |
566690fd | 370 | goto finish; |
3e33a44a | 371 | } |
dc8e15c2 LP |
372 | |
373 | root_directory = true; | |
3d20ed6d LP |
374 | } |
375 | ||
9102fdc5 TG |
376 | r = sd_device_get_property_value(dev, "ID_FS_TYPE", &type); |
377 | if (r >= 0) { | |
eb66db55 | 378 | r = fsck_exists(type); |
85eca92e LP |
379 | if (r < 0) |
380 | log_warning_errno(r, "Couldn't detect if fsck.%s may be used for %s, proceeding: %m", type, device); | |
381 | else if (r == 0) { | |
382 | log_info("fsck.%s doesn't exist, not checking file system on %s.", type, device); | |
566690fd | 383 | goto finish; |
85eca92e | 384 | } |
94192cda ZJS |
385 | } |
386 | ||
96d9117a LP |
387 | if (arg_show_progress) { |
388 | if (pipe(progress_pipe) < 0) { | |
389 | r = log_error_errno(errno, "pipe(): %m"); | |
390 | goto finish; | |
391 | } | |
19e887e7 | 392 | } |
27d340c7 | 393 | |
27d340c7 LP |
394 | pid = fork(); |
395 | if (pid < 0) { | |
566690fd | 396 | r = log_error_errno(errno, "fork(): %m"); |
3d20ed6d | 397 | goto finish; |
96d9117a LP |
398 | } |
399 | if (pid == 0) { | |
400 | char dash_c[sizeof("-C")-1 + DECIMAL_STR_MAX(int) + 1]; | |
401 | int progress_socket = -1; | |
402 | const char *cmdline[9]; | |
403 | int i = 0; | |
404 | ||
3d20ed6d | 405 | /* Child */ |
96d9117a | 406 | |
ce30c8dc LP |
407 | (void) reset_all_signal_handlers(); |
408 | (void) reset_signal_mask(); | |
96d9117a LP |
409 | assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0); |
410 | ||
411 | /* Close the reading side of the progress pipe */ | |
1952708a | 412 | progress_pipe[0] = safe_close(progress_pipe[0]); |
96d9117a LP |
413 | |
414 | /* Try to connect to a progress management daemon, if there is one */ | |
415 | progress_socket = fsck_progress_socket(); | |
416 | if (progress_socket >= 0) { | |
417 | /* If this worked we close the progress pipe early, and just use the socket */ | |
418 | progress_pipe[1] = safe_close(progress_pipe[1]); | |
419 | xsprintf(dash_c, "-C%i", progress_socket); | |
420 | } else if (progress_pipe[1] >= 0) { | |
421 | /* Otherwise if we have the progress pipe to our own local handle, we use it */ | |
422 | xsprintf(dash_c, "-C%i", progress_pipe[1]); | |
423 | } else | |
424 | dash_c[0] = 0; | |
425 | ||
426 | cmdline[i++] = "/sbin/fsck"; | |
427 | cmdline[i++] = arg_repair; | |
428 | cmdline[i++] = "-T"; | |
429 | ||
430 | /* | |
431 | * Since util-linux v2.25 fsck uses /run/fsck/<diskname>.lock files. | |
432 | * The previous versions use flock for the device and conflict with | |
433 | * udevd, see https://bugs.freedesktop.org/show_bug.cgi?id=79576#c5 | |
434 | */ | |
435 | cmdline[i++] = "-l"; | |
436 | ||
437 | if (!root_directory) | |
438 | cmdline[i++] = "-M"; | |
439 | ||
440 | if (arg_force) | |
441 | cmdline[i++] = "-f"; | |
442 | ||
443 | if (!isempty(dash_c)) | |
444 | cmdline[i++] = dash_c; | |
445 | ||
446 | cmdline[i++] = device; | |
447 | cmdline[i++] = NULL; | |
448 | ||
3d20ed6d | 449 | execv(cmdline[0], (char**) cmdline); |
91077af6 | 450 | _exit(FSCK_OPERATIONAL_ERROR); |
3d20ed6d LP |
451 | } |
452 | ||
03e334a1 | 453 | progress_pipe[1] = safe_close(progress_pipe[1]); |
96d9117a | 454 | (void) process_progress(progress_pipe[0]); |
576a13ea | 455 | progress_pipe[0] = -1; |
27d340c7 | 456 | |
566690fd LP |
457 | r = wait_for_terminate(pid, &status); |
458 | if (r < 0) { | |
459 | log_error_errno(r, "waitid(): %m"); | |
3d20ed6d LP |
460 | goto finish; |
461 | } | |
462 | ||
96d9117a | 463 | if (status.si_code != CLD_EXITED || (status.si_status & ~1)) { |
3d20ed6d | 464 | |
4c701096 | 465 | if (IN_SET(status.si_code, CLD_KILLED, CLD_DUMPED)) |
a9e1f5ec LP |
466 | log_error("fsck terminated by signal %s.", signal_to_string(status.si_status)); |
467 | else if (status.si_code == CLD_EXITED) | |
468 | log_error("fsck failed with error code %i.", status.si_status); | |
96d9117a | 469 | else |
a9e1f5ec | 470 | log_error("fsck failed due to unknown reason."); |
3d20ed6d | 471 | |
566690fd LP |
472 | r = -EINVAL; |
473 | ||
91077af6 | 474 | if (status.si_code == CLD_EXITED && (status.si_status & FSCK_SYSTEM_SHOULD_REBOOT) && root_directory) |
3d20ed6d | 475 | /* System should be rebooted. */ |
48db40b3 | 476 | start_target(SPECIAL_REBOOT_TARGET, "replace-irreversibly"); |
91077af6 | 477 | else if (status.si_code == CLD_EXITED && (status.si_status & (FSCK_SYSTEM_SHOULD_REBOOT | FSCK_ERRORS_LEFT_UNCORRECTED))) |
3d20ed6d | 478 | /* Some other problem */ |
48db40b3 | 479 | start_target(SPECIAL_EMERGENCY_TARGET, "replace"); |
a4c24ff7 | 480 | else { |
96d9117a | 481 | log_warning("Ignoring error."); |
566690fd | 482 | r = 0; |
a4c24ff7 | 483 | } |
3d20ed6d LP |
484 | |
485 | } else | |
566690fd | 486 | r = 0; |
3d20ed6d | 487 | |
91077af6 | 488 | if (status.si_code == CLD_EXITED && (status.si_status & FSCK_ERROR_CORRECTED)) |
e7a3aa3d | 489 | (void) touch("/run/systemd/quotacheck"); |
3d20ed6d LP |
490 | |
491 | finish: | |
566690fd | 492 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
3d20ed6d | 493 | } |