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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" |
5e332028 | 25 | #include "main-func.h" |
6bedfcbb | 26 | #include "parse-util.h" |
eb66db55 | 27 | #include "path-util.h" |
4e731273 | 28 | #include "proc-cmdline.h" |
3ffd4af2 | 29 | #include "process-util.h" |
595225af | 30 | #include "rlimit-util.h" |
3ffd4af2 | 31 | #include "signal-util.h" |
ac6e2f0d | 32 | #include "socket-util.h" |
3ffd4af2 | 33 | #include "special.h" |
15a5e950 | 34 | #include "stdio-util.h" |
3ffd4af2 | 35 | #include "util.h" |
3d20ed6d | 36 | |
91077af6 TA |
37 | /* exit codes as defined in fsck(8) */ |
38 | enum { | |
5d3bab79 LP |
39 | FSCK_SUCCESS = 0, |
40 | FSCK_ERROR_CORRECTED = 1 << 0, | |
41 | FSCK_SYSTEM_SHOULD_REBOOT = 1 << 1, | |
42 | FSCK_ERRORS_LEFT_UNCORRECTED = 1 << 2, | |
43 | FSCK_OPERATIONAL_ERROR = 1 << 3, | |
44 | FSCK_USAGE_OR_SYNTAX_ERROR = 1 << 4, | |
45 | FSCK_USER_CANCELLED = 1 << 5, | |
46 | FSCK_SHARED_LIB_ERROR = 1 << 7, | |
91077af6 TA |
47 | }; |
48 | ||
3d20ed6d LP |
49 | static bool arg_skip = false; |
50 | static bool arg_force = false; | |
96d9117a | 51 | static bool arg_show_progress = false; |
f1f0198c | 52 | static const char *arg_repair = "-a"; |
3d20ed6d | 53 | |
48db40b3 | 54 | static void start_target(const char *target, const char *mode) { |
4afd3348 LP |
55 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
56 | _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; | |
0c842e0a | 57 | int r; |
3d20ed6d LP |
58 | |
59 | assert(target); | |
60 | ||
266f3e26 | 61 | r = bus_connect_system_systemd(&bus); |
0c842e0a | 62 | if (r < 0) { |
da927ba9 | 63 | log_error_errno(r, "Failed to get D-Bus connection: %m"); |
0c842e0a | 64 | return; |
3d20ed6d LP |
65 | } |
66 | ||
0c842e0a | 67 | log_info("Running request %s/start/replace", target); |
3d20ed6d | 68 | |
90bb85e1 | 69 | /* Start these units only if we can replace base.target with it */ |
0c842e0a TG |
70 | r = sd_bus_call_method(bus, |
71 | "org.freedesktop.systemd1", | |
72 | "/org/freedesktop/systemd1", | |
73 | "org.freedesktop.systemd1.Manager", | |
74 | "StartUnitReplace", | |
75 | &error, | |
76 | NULL, | |
48db40b3 | 77 | "sss", "basic.target", target, mode); |
3d20ed6d | 78 | |
5220a6f3 LP |
79 | /* Don't print a warning if we aren't called during startup */ |
80 | if (r < 0 && !sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_JOB)) | |
24b52437 | 81 | log_error("Failed to start unit: %s", bus_error_message(&error, r)); |
3d20ed6d LP |
82 | } |
83 | ||
96287a49 | 84 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
24b52437 LP |
85 | int r; |
86 | ||
87 | assert(key); | |
059cb385 | 88 | |
1d84ad94 LP |
89 | if (streq(key, "fsck.mode")) { |
90 | ||
91 | if (proc_cmdline_value_missing(key, value)) | |
92 | return 0; | |
059cb385 LP |
93 | |
94 | if (streq(value, "auto")) | |
95 | arg_force = arg_skip = false; | |
96 | else if (streq(value, "force")) | |
97 | arg_force = true; | |
98 | else if (streq(value, "skip")) | |
99 | arg_skip = true; | |
100 | else | |
85013844 LP |
101 | log_warning("Invalid fsck.mode= parameter '%s'. Ignoring.", value); |
102 | ||
1d84ad94 LP |
103 | } else if (streq(key, "fsck.repair")) { |
104 | ||
105 | if (proc_cmdline_value_missing(key, value)) | |
106 | return 0; | |
f1f0198c HHPF |
107 | |
108 | if (streq(value, "preen")) | |
109 | arg_repair = "-a"; | |
24b52437 LP |
110 | else { |
111 | r = parse_boolean(value); | |
112 | if (r > 0) | |
113 | arg_repair = "-y"; | |
114 | else if (r == 0) | |
115 | arg_repair = "-n"; | |
116 | else | |
117 | log_warning("Invalid fsck.repair= parameter '%s'. Ignoring.", value); | |
118 | } | |
85013844 LP |
119 | } |
120 | ||
349cc4a5 | 121 | #if HAVE_SYSV_COMPAT |
059cb385 LP |
122 | else if (streq(key, "fastboot") && !value) { |
123 | log_warning("Please pass 'fsck.mode=skip' rather than 'fastboot' on the kernel command line."); | |
141a79f4 | 124 | arg_skip = true; |
85013844 | 125 | |
059cb385 LP |
126 | } else if (streq(key, "forcefsck") && !value) { |
127 | log_warning("Please pass 'fsck.mode=force' rather than 'forcefsck' on the kernel command line."); | |
141a79f4 | 128 | arg_force = true; |
3d20ed6d | 129 | } |
141a79f4 | 130 | #endif |
3d20ed6d | 131 | |
3d20ed6d LP |
132 | return 0; |
133 | } | |
134 | ||
135 | static void test_files(void) { | |
85013844 | 136 | |
349cc4a5 | 137 | #if HAVE_SYSV_COMPAT |
32f992a5 LP |
138 | if (access("/fastboot", F_OK) >= 0) { |
139 | log_error("Please pass 'fsck.mode=skip' on the kernel command line rather than creating /fastboot on the root file system."); | |
3d20ed6d | 140 | arg_skip = true; |
32f992a5 | 141 | } |
3d20ed6d | 142 | |
32f992a5 LP |
143 | if (access("/forcefsck", F_OK) >= 0) { |
144 | log_error("Please pass 'fsck.mode=force' on the kernel command line rather than creating /forcefsck on the root file system."); | |
3d20ed6d | 145 | arg_force = true; |
32f992a5 LP |
146 | } |
147 | #endif | |
27d340c7 | 148 | |
96d9117a | 149 | arg_show_progress = access("/run/systemd/show-status", F_OK) >= 0; |
27d340c7 LP |
150 | } |
151 | ||
96d9117a LP |
152 | static double percent(int pass, unsigned long cur, unsigned long max) { |
153 | /* Values stolen from e2fsck */ | |
154 | ||
155 | static const int pass_table[] = { | |
156 | 0, 70, 90, 92, 95, 100 | |
27d340c7 LP |
157 | }; |
158 | ||
96d9117a LP |
159 | if (pass <= 0) |
160 | return 0.0; | |
161 | ||
162 | if ((unsigned) pass >= ELEMENTSOF(pass_table) || max == 0) | |
163 | return 100.0; | |
164 | ||
165 | return (double) pass_table[pass-1] + | |
166 | ((double) pass_table[pass] - (double) pass_table[pass-1]) * | |
167 | (double) cur / (double) max; | |
168 | } | |
169 | ||
170 | static int process_progress(int fd) { | |
171 | _cleanup_fclose_ FILE *console = NULL, *f = NULL; | |
172 | usec_t last = 0; | |
173 | bool locked = false; | |
174 | int clear = 0, r; | |
175 | ||
176 | /* No progress pipe to process? Then we are a NOP. */ | |
177 | if (fd < 0) | |
178 | return 0; | |
179 | ||
e92aaed3 | 180 | f = fdopen(fd, "r"); |
96d9117a LP |
181 | if (!f) { |
182 | safe_close(fd); | |
183 | return -errno; | |
184 | } | |
185 | ||
186 | console = fopen("/dev/console", "we"); | |
187 | if (!console) | |
188 | return -ENOMEM; | |
189 | ||
190 | for (;;) { | |
191 | int pass, m; | |
192 | unsigned long cur, max; | |
ac6e2f0d | 193 | _cleanup_free_ char *device = NULL; |
96d9117a LP |
194 | double p; |
195 | usec_t t; | |
27d340c7 | 196 | |
96d9117a LP |
197 | if (fscanf(f, "%i %lu %lu %ms", &pass, &cur, &max, &device) != 4) { |
198 | ||
199 | if (ferror(f)) | |
200 | r = log_warning_errno(errno, "Failed to read from progress pipe: %m"); | |
201 | else if (feof(f)) | |
202 | r = 0; | |
203 | else { | |
204 | log_warning("Failed to parse progress pipe data"); | |
205 | r = -EBADMSG; | |
206 | } | |
27d340c7 | 207 | break; |
96d9117a LP |
208 | } |
209 | ||
210 | /* Only show one progress counter at max */ | |
211 | if (!locked) { | |
212 | if (flock(fileno(console), LOCK_EX|LOCK_NB) < 0) | |
213 | continue; | |
214 | ||
215 | locked = true; | |
216 | } | |
27d340c7 | 217 | |
27d340c7 LP |
218 | /* Only update once every 50ms */ |
219 | t = now(CLOCK_MONOTONIC); | |
e375825d | 220 | if (last + 50 * USEC_PER_MSEC > t) |
27d340c7 | 221 | continue; |
27d340c7 LP |
222 | |
223 | last = t; | |
224 | ||
96d9117a LP |
225 | p = percent(pass, cur, max); |
226 | fprintf(console, "\r%s: fsck %3.1f%% complete...\r%n", device, p, &m); | |
227 | fflush(console); | |
228 | ||
229 | if (m > clear) | |
230 | clear = m; | |
27d340c7 LP |
231 | } |
232 | ||
96d9117a LP |
233 | if (clear > 0) { |
234 | unsigned j; | |
235 | ||
236 | fputc('\r', console); | |
237 | for (j = 0; j < (unsigned) clear; j++) | |
238 | fputc(' ', console); | |
239 | fputc('\r', console); | |
240 | fflush(console); | |
241 | } | |
242 | ||
243 | return r; | |
244 | } | |
245 | ||
246 | static int fsck_progress_socket(void) { | |
247 | static const union sockaddr_union sa = { | |
248 | .un.sun_family = AF_UNIX, | |
249 | .un.sun_path = "/run/systemd/fsck.progress", | |
250 | }; | |
251 | ||
15a3e96f | 252 | _cleanup_close_ int fd = -1; |
96d9117a LP |
253 | |
254 | fd = socket(AF_UNIX, SOCK_STREAM, 0); | |
255 | if (fd < 0) | |
256 | return log_warning_errno(errno, "socket(): %m"); | |
257 | ||
15a3e96f LP |
258 | if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) |
259 | return log_full_errno(IN_SET(errno, ECONNREFUSED, ENOENT) ? LOG_DEBUG : LOG_WARNING, | |
260 | errno, "Failed to connect to progress socket %s, ignoring: %m", sa.un.sun_path); | |
96d9117a | 261 | |
15a3e96f | 262 | return TAKE_FD(fd); |
3d20ed6d LP |
263 | } |
264 | ||
9013653e | 265 | static int run(int argc, char *argv[]) { |
96d9117a | 266 | _cleanup_close_pair_ int progress_pipe[2] = { -1, -1 }; |
4afd3348 | 267 | _cleanup_(sd_device_unrefp) sd_device *dev = NULL; |
94192cda | 268 | const char *device, *type; |
dc8e15c2 | 269 | bool root_directory; |
94192cda | 270 | struct stat st; |
2e87a1fd | 271 | int r, exit_status; |
96d9117a | 272 | pid_t pid; |
3d20ed6d | 273 | |
6bf3c61c | 274 | log_setup_service(); |
3d20ed6d | 275 | |
9013653e ZJS |
276 | if (argc > 2) { |
277 | log_error("This program expects one or no arguments."); | |
278 | return -EINVAL; | |
279 | } | |
280 | ||
4c12626c LP |
281 | umask(0022); |
282 | ||
1d84ad94 | 283 | r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_STRIP_RD_PREFIX); |
e7a3aa3d LP |
284 | if (r < 0) |
285 | log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); | |
b5884878 | 286 | |
3d20ed6d LP |
287 | test_files(); |
288 | ||
9013653e ZJS |
289 | if (!arg_force && arg_skip) |
290 | return 0; | |
a9e1f5ec | 291 | |
dc8e15c2 | 292 | if (argc > 1) { |
a9e1f5ec | 293 | device = argv[1]; |
94192cda | 294 | |
9013653e ZJS |
295 | if (stat(device, &st) < 0) |
296 | return log_error_errno(errno, "Failed to stat %s: %m", device); | |
e7a3aa3d LP |
297 | |
298 | if (!S_ISBLK(st.st_mode)) { | |
299 | log_error("%s is not a block device.", device); | |
9013653e | 300 | return -EINVAL; |
94192cda ZJS |
301 | } |
302 | ||
9102fdc5 | 303 | r = sd_device_new_from_devnum(&dev, 'b', st.st_rdev); |
9013653e ZJS |
304 | if (r < 0) |
305 | return log_error_errno(r, "Failed to detect device %s: %m", device); | |
e7a3aa3d LP |
306 | |
307 | root_directory = false; | |
dc8e15c2 | 308 | } else { |
a84f5192 | 309 | struct timespec times[2]; |
3d20ed6d | 310 | |
a9e1f5ec LP |
311 | /* Find root device */ |
312 | ||
9013653e ZJS |
313 | if (stat("/", &st) < 0) |
314 | return log_error_errno(errno, "Failed to stat() the root directory: %m"); | |
a9e1f5ec LP |
315 | |
316 | /* Virtual root devices don't need an fsck */ | |
566690fd | 317 | if (major(st.st_dev) == 0) { |
e7a3aa3d | 318 | log_debug("Root directory is virtual or btrfs, skipping check."); |
9013653e | 319 | return 0; |
566690fd | 320 | } |
a9e1f5ec | 321 | |
a84f5192 KS |
322 | /* check if we are already writable */ |
323 | times[0] = st.st_atim; | |
324 | times[1] = st.st_mtim; | |
e7a3aa3d | 325 | |
a84f5192 | 326 | if (utimensat(AT_FDCWD, "/", times, 0) == 0) { |
cf1a1055 | 327 | log_info("Root directory is writable, skipping check."); |
9013653e | 328 | return 0; |
a84f5192 KS |
329 | } |
330 | ||
9102fdc5 | 331 | r = sd_device_new_from_devnum(&dev, 'b', st.st_dev); |
9013653e ZJS |
332 | if (r < 0) |
333 | return log_error_errno(r, "Failed to detect root device: %m"); | |
a9e1f5ec | 334 | |
9102fdc5 | 335 | r = sd_device_get_devname(dev, &device); |
9013653e ZJS |
336 | if (r < 0) |
337 | return log_device_error_errno(dev, r, "Failed to detect device node of root directory: %m"); | |
dc8e15c2 LP |
338 | |
339 | root_directory = true; | |
3d20ed6d LP |
340 | } |
341 | ||
2c740afd | 342 | if (sd_device_get_property_value(dev, "ID_FS_TYPE", &type) >= 0) { |
eb66db55 | 343 | r = fsck_exists(type); |
85eca92e | 344 | if (r < 0) |
7bd33dbd | 345 | log_device_warning_errno(dev, r, "Couldn't detect if fsck.%s may be used, proceeding: %m", type); |
85eca92e | 346 | else if (r == 0) { |
7bd33dbd | 347 | log_device_info(dev, "fsck.%s doesn't exist, not checking file system.", type); |
9013653e | 348 | return 0; |
85eca92e | 349 | } |
94192cda ZJS |
350 | } |
351 | ||
9013653e ZJS |
352 | if (arg_show_progress && |
353 | pipe(progress_pipe) < 0) | |
354 | return log_error_errno(errno, "pipe(): %m"); | |
27d340c7 | 355 | |
b6e1fff1 LP |
356 | r = safe_fork("(fsck)", FORK_RESET_SIGNALS|FORK_DEATHSIG|FORK_LOG, &pid); |
357 | if (r < 0) | |
9013653e | 358 | return r; |
4c253ed1 | 359 | if (r == 0) { |
fbd0b64f | 360 | char dash_c[STRLEN("-C") + DECIMAL_STR_MAX(int) + 1]; |
96d9117a LP |
361 | int progress_socket = -1; |
362 | const char *cmdline[9]; | |
363 | int i = 0; | |
364 | ||
3d20ed6d | 365 | /* Child */ |
96d9117a | 366 | |
96d9117a | 367 | /* Close the reading side of the progress pipe */ |
1952708a | 368 | progress_pipe[0] = safe_close(progress_pipe[0]); |
96d9117a LP |
369 | |
370 | /* Try to connect to a progress management daemon, if there is one */ | |
371 | progress_socket = fsck_progress_socket(); | |
372 | if (progress_socket >= 0) { | |
373 | /* If this worked we close the progress pipe early, and just use the socket */ | |
374 | progress_pipe[1] = safe_close(progress_pipe[1]); | |
375 | xsprintf(dash_c, "-C%i", progress_socket); | |
376 | } else if (progress_pipe[1] >= 0) { | |
377 | /* Otherwise if we have the progress pipe to our own local handle, we use it */ | |
378 | xsprintf(dash_c, "-C%i", progress_pipe[1]); | |
379 | } else | |
380 | dash_c[0] = 0; | |
381 | ||
382 | cmdline[i++] = "/sbin/fsck"; | |
383 | cmdline[i++] = arg_repair; | |
384 | cmdline[i++] = "-T"; | |
385 | ||
386 | /* | |
387 | * Since util-linux v2.25 fsck uses /run/fsck/<diskname>.lock files. | |
388 | * The previous versions use flock for the device and conflict with | |
389 | * udevd, see https://bugs.freedesktop.org/show_bug.cgi?id=79576#c5 | |
390 | */ | |
391 | cmdline[i++] = "-l"; | |
392 | ||
393 | if (!root_directory) | |
394 | cmdline[i++] = "-M"; | |
395 | ||
396 | if (arg_force) | |
397 | cmdline[i++] = "-f"; | |
398 | ||
399 | if (!isempty(dash_c)) | |
400 | cmdline[i++] = dash_c; | |
401 | ||
402 | cmdline[i++] = device; | |
403 | cmdline[i++] = NULL; | |
404 | ||
595225af LP |
405 | (void) rlimit_nofile_safe(); |
406 | ||
3d20ed6d | 407 | execv(cmdline[0], (char**) cmdline); |
91077af6 | 408 | _exit(FSCK_OPERATIONAL_ERROR); |
3d20ed6d LP |
409 | } |
410 | ||
03e334a1 | 411 | progress_pipe[1] = safe_close(progress_pipe[1]); |
9013653e | 412 | (void) process_progress(TAKE_FD(progress_pipe[0])); |
27d340c7 | 413 | |
2e87a1fd | 414 | exit_status = wait_for_terminate_and_check("fsck", pid, WAIT_LOG_ABNORMAL); |
9013653e ZJS |
415 | if (exit_status < 0) |
416 | return exit_status; | |
cbf13087 | 417 | if ((exit_status & ~FSCK_ERROR_CORRECTED) != FSCK_SUCCESS) { |
2e87a1fd | 418 | log_error("fsck failed with exit status %i.", exit_status); |
3d20ed6d | 419 | |
2e87a1fd | 420 | if ((exit_status & FSCK_SYSTEM_SHOULD_REBOOT) && root_directory) { |
3d20ed6d | 421 | /* System should be rebooted. */ |
48db40b3 | 422 | start_target(SPECIAL_REBOOT_TARGET, "replace-irreversibly"); |
9013653e ZJS |
423 | return -EINVAL; |
424 | } else if (exit_status & (FSCK_SYSTEM_SHOULD_REBOOT | FSCK_ERRORS_LEFT_UNCORRECTED)) | |
3d20ed6d | 425 | /* Some other problem */ |
48db40b3 | 426 | start_target(SPECIAL_EMERGENCY_TARGET, "replace"); |
9013653e | 427 | else |
96d9117a | 428 | log_warning("Ignoring error."); |
9013653e | 429 | } |
3d20ed6d | 430 | |
2e87a1fd | 431 | if (exit_status & FSCK_ERROR_CORRECTED) |
e7a3aa3d | 432 | (void) touch("/run/systemd/quotacheck"); |
3d20ed6d | 433 | |
cac0b957 | 434 | return !!(exit_status & (FSCK_SYSTEM_SHOULD_REBOOT | FSCK_ERRORS_LEFT_UNCORRECTED)); |
3d20ed6d | 435 | } |
9013653e ZJS |
436 | |
437 | DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |