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3d20ed6d LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
f1f0198c | 7 | Copyright 2014 Holger Hans Peter Freyther |
3d20ed6d LP |
8 | |
9 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
10 | under the terms of the GNU Lesser General Public License as published by |
11 | the Free Software Foundation; either version 2.1 of the License, or | |
3d20ed6d LP |
12 | (at your option) any later version. |
13 | ||
14 | systemd is distributed in the hope that it will be useful, but | |
15 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 17 | Lesser General Public License for more details. |
3d20ed6d | 18 | |
5430f7f2 | 19 | You should have received a copy of the GNU Lesser General Public License |
3d20ed6d LP |
20 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
21 | ***/ | |
22 | ||
23 | #include <stdio.h> | |
24 | #include <stdbool.h> | |
25 | #include <string.h> | |
26 | #include <errno.h> | |
27 | #include <unistd.h> | |
a84f5192 | 28 | #include <fcntl.h> |
27d340c7 | 29 | #include <sys/file.h> |
3d20ed6d | 30 | |
0c842e0a TG |
31 | #include "sd-bus.h" |
32 | #include "libudev.h" | |
3d20ed6d LP |
33 | |
34 | #include "util.h" | |
3d20ed6d | 35 | #include "special.h" |
0c842e0a TG |
36 | #include "bus-util.h" |
37 | #include "bus-error.h" | |
96aad8d1 | 38 | #include "bus-common-errors.h" |
a5c32cff | 39 | #include "fileio.h" |
1ca208fb | 40 | #include "udev-util.h" |
eb66db55 | 41 | #include "path-util.h" |
3d20ed6d LP |
42 | |
43 | static bool arg_skip = false; | |
44 | static bool arg_force = false; | |
27d340c7 | 45 | static bool arg_show_progress = false; |
f1f0198c | 46 | static const char *arg_repair = "-a"; |
3d20ed6d | 47 | |
80cfe9e1 | 48 | static void start_target(const char *target) { |
0c842e0a | 49 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
24996861 | 50 | _cleanup_bus_close_unref_ sd_bus *bus = NULL; |
0c842e0a | 51 | int r; |
3d20ed6d LP |
52 | |
53 | assert(target); | |
54 | ||
0f8bd8de | 55 | r = bus_open_system_systemd(&bus); |
0c842e0a | 56 | if (r < 0) { |
da927ba9 | 57 | log_error_errno(r, "Failed to get D-Bus connection: %m"); |
0c842e0a | 58 | return; |
3d20ed6d LP |
59 | } |
60 | ||
0c842e0a | 61 | log_info("Running request %s/start/replace", target); |
3d20ed6d | 62 | |
90bb85e1 | 63 | /* Start these units only if we can replace base.target with it */ |
0c842e0a TG |
64 | r = sd_bus_call_method(bus, |
65 | "org.freedesktop.systemd1", | |
66 | "/org/freedesktop/systemd1", | |
67 | "org.freedesktop.systemd1.Manager", | |
68 | "StartUnitReplace", | |
69 | &error, | |
70 | NULL, | |
71 | "sss", "basic.target", target, "replace"); | |
3d20ed6d | 72 | |
5220a6f3 LP |
73 | /* Don't print a warning if we aren't called during startup */ |
74 | if (r < 0 && !sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_JOB)) | |
75 | log_error("Failed to start unit: %s", bus_error_message(&error, -r)); | |
3d20ed6d LP |
76 | } |
77 | ||
059cb385 LP |
78 | static int parse_proc_cmdline_item(const char *key, const char *value) { |
79 | ||
80 | if (streq(key, "fsck.mode") && value) { | |
81 | ||
82 | if (streq(value, "auto")) | |
83 | arg_force = arg_skip = false; | |
84 | else if (streq(value, "force")) | |
85 | arg_force = true; | |
86 | else if (streq(value, "skip")) | |
87 | arg_skip = true; | |
88 | else | |
85013844 LP |
89 | log_warning("Invalid fsck.mode= parameter '%s'. Ignoring.", value); |
90 | ||
f1f0198c HHPF |
91 | } else if (streq(key, "fsck.repair") && value) { |
92 | ||
93 | if (streq(value, "preen")) | |
94 | arg_repair = "-a"; | |
95 | else if (streq(value, "yes")) | |
96 | arg_repair = "-y"; | |
97 | else if (streq(value, "no")) | |
98 | arg_repair = "-n"; | |
99 | else | |
85013844 LP |
100 | log_warning("Invalid fsck.repair= parameter '%s'. Ignoring.", value); |
101 | } | |
102 | ||
32f992a5 | 103 | #ifdef HAVE_SYSV_COMPAT |
059cb385 LP |
104 | else if (streq(key, "fastboot") && !value) { |
105 | log_warning("Please pass 'fsck.mode=skip' rather than 'fastboot' on the kernel command line."); | |
141a79f4 | 106 | arg_skip = true; |
85013844 | 107 | |
059cb385 LP |
108 | } else if (streq(key, "forcefsck") && !value) { |
109 | log_warning("Please pass 'fsck.mode=force' rather than 'forcefsck' on the kernel command line."); | |
141a79f4 | 110 | arg_force = true; |
3d20ed6d | 111 | } |
141a79f4 | 112 | #endif |
3d20ed6d | 113 | |
3d20ed6d LP |
114 | return 0; |
115 | } | |
116 | ||
117 | static void test_files(void) { | |
85013844 | 118 | |
32f992a5 LP |
119 | #ifdef HAVE_SYSV_COMPAT |
120 | if (access("/fastboot", F_OK) >= 0) { | |
121 | log_error("Please pass 'fsck.mode=skip' on the kernel command line rather than creating /fastboot on the root file system."); | |
3d20ed6d | 122 | arg_skip = true; |
32f992a5 | 123 | } |
3d20ed6d | 124 | |
32f992a5 LP |
125 | if (access("/forcefsck", F_OK) >= 0) { |
126 | log_error("Please pass 'fsck.mode=force' on the kernel command line rather than creating /forcefsck on the root file system."); | |
3d20ed6d | 127 | arg_force = true; |
32f992a5 LP |
128 | } |
129 | #endif | |
27d340c7 LP |
130 | |
131 | if (access("/run/systemd/show-status", F_OK) >= 0 || plymouth_running()) | |
132 | arg_show_progress = true; | |
133 | } | |
134 | ||
135 | static double percent(int pass, unsigned long cur, unsigned long max) { | |
136 | /* Values stolen from e2fsck */ | |
137 | ||
138 | static const int pass_table[] = { | |
139 | 0, 70, 90, 92, 95, 100 | |
140 | }; | |
141 | ||
142 | if (pass <= 0) | |
143 | return 0.0; | |
144 | ||
145 | if ((unsigned) pass >= ELEMENTSOF(pass_table) || max == 0) | |
146 | return 100.0; | |
147 | ||
148 | return (double) pass_table[pass-1] + | |
149 | ((double) pass_table[pass] - (double) pass_table[pass-1]) * | |
150 | (double) cur / (double) max; | |
151 | } | |
152 | ||
153 | static int process_progress(int fd) { | |
e375825d | 154 | _cleanup_fclose_ FILE *console = NULL, *f = NULL; |
27d340c7 LP |
155 | usec_t last = 0; |
156 | bool locked = false; | |
157 | int clear = 0; | |
158 | ||
159 | f = fdopen(fd, "r"); | |
160 | if (!f) { | |
03e334a1 | 161 | safe_close(fd); |
27d340c7 LP |
162 | return -errno; |
163 | } | |
164 | ||
c8a202b7 | 165 | console = fopen("/dev/console", "we"); |
e375825d | 166 | if (!console) |
27d340c7 | 167 | return -ENOMEM; |
27d340c7 LP |
168 | |
169 | while (!feof(f)) { | |
170 | int pass, m; | |
171 | unsigned long cur, max; | |
e375825d | 172 | _cleanup_free_ char *device = NULL; |
27d340c7 LP |
173 | double p; |
174 | usec_t t; | |
175 | ||
176 | if (fscanf(f, "%i %lu %lu %ms", &pass, &cur, &max, &device) != 4) | |
177 | break; | |
178 | ||
179 | /* Only show one progress counter at max */ | |
180 | if (!locked) { | |
e375825d | 181 | if (flock(fileno(console), LOCK_EX|LOCK_NB) < 0) |
27d340c7 | 182 | continue; |
27d340c7 LP |
183 | |
184 | locked = true; | |
185 | } | |
186 | ||
187 | /* Only update once every 50ms */ | |
188 | t = now(CLOCK_MONOTONIC); | |
e375825d | 189 | if (last + 50 * USEC_PER_MSEC > t) |
27d340c7 | 190 | continue; |
27d340c7 LP |
191 | |
192 | last = t; | |
193 | ||
194 | p = percent(pass, cur, max); | |
195 | fprintf(console, "\r%s: fsck %3.1f%% complete...\r%n", device, p, &m); | |
196 | fflush(console); | |
197 | ||
27d340c7 LP |
198 | if (m > clear) |
199 | clear = m; | |
200 | } | |
201 | ||
202 | if (clear > 0) { | |
203 | unsigned j; | |
204 | ||
205 | fputc('\r', console); | |
206 | for (j = 0; j < (unsigned) clear; j++) | |
207 | fputc(' ', console); | |
208 | fputc('\r', console); | |
209 | fflush(console); | |
210 | } | |
211 | ||
27d340c7 | 212 | return 0; |
3d20ed6d LP |
213 | } |
214 | ||
215 | int main(int argc, char *argv[]) { | |
27d340c7 | 216 | const char *cmdline[9]; |
3d20ed6d LP |
217 | int i = 0, r = EXIT_FAILURE, q; |
218 | pid_t pid; | |
219 | siginfo_t status; | |
1ca208fb ZJS |
220 | _cleanup_udev_unref_ struct udev *udev = NULL; |
221 | _cleanup_udev_device_unref_ struct udev_device *udev_device = NULL; | |
94192cda | 222 | const char *device, *type; |
dc8e15c2 | 223 | bool root_directory; |
27d340c7 LP |
224 | int progress_pipe[2] = { -1, -1 }; |
225 | char dash_c[2+10+1]; | |
94192cda | 226 | struct stat st; |
3d20ed6d | 227 | |
a9e1f5ec LP |
228 | if (argc > 2) { |
229 | log_error("This program expects one or no arguments."); | |
3d20ed6d LP |
230 | return EXIT_FAILURE; |
231 | } | |
232 | ||
27d340c7 | 233 | log_set_target(LOG_TARGET_AUTO); |
3d20ed6d LP |
234 | log_parse_environment(); |
235 | log_open(); | |
236 | ||
4c12626c LP |
237 | umask(0022); |
238 | ||
b5884878 LP |
239 | q = parse_proc_cmdline(parse_proc_cmdline_item); |
240 | if (q < 0) | |
da927ba9 | 241 | log_warning_errno(q, "Failed to parse kernel command line, ignoring: %m"); |
b5884878 | 242 | |
3d20ed6d LP |
243 | test_files(); |
244 | ||
a9e1f5ec LP |
245 | if (!arg_force && arg_skip) |
246 | return 0; | |
247 | ||
94192cda ZJS |
248 | udev = udev_new(); |
249 | if (!udev) { | |
250 | log_oom(); | |
251 | return EXIT_FAILURE; | |
252 | } | |
253 | ||
dc8e15c2 | 254 | if (argc > 1) { |
a9e1f5ec | 255 | device = argv[1]; |
dc8e15c2 | 256 | root_directory = false; |
94192cda ZJS |
257 | |
258 | if (stat(device, &st) < 0) { | |
56f64d95 | 259 | log_error_errno(errno, "Failed to stat '%s': %m", device); |
94192cda ZJS |
260 | return EXIT_FAILURE; |
261 | } | |
262 | ||
263 | udev_device = udev_device_new_from_devnum(udev, 'b', st.st_rdev); | |
264 | if (!udev_device) { | |
265 | log_error("Failed to detect device %s", device); | |
266 | return EXIT_FAILURE; | |
267 | } | |
dc8e15c2 | 268 | } else { |
a84f5192 | 269 | struct timespec times[2]; |
3d20ed6d | 270 | |
a9e1f5ec LP |
271 | /* Find root device */ |
272 | ||
273 | if (stat("/", &st) < 0) { | |
56f64d95 | 274 | log_error_errno(errno, "Failed to stat() the root directory: %m"); |
e375825d | 275 | return EXIT_FAILURE; |
a9e1f5ec LP |
276 | } |
277 | ||
278 | /* Virtual root devices don't need an fsck */ | |
279 | if (major(st.st_dev) == 0) | |
e375825d | 280 | return EXIT_SUCCESS; |
a9e1f5ec | 281 | |
a84f5192 KS |
282 | /* check if we are already writable */ |
283 | times[0] = st.st_atim; | |
284 | times[1] = st.st_mtim; | |
285 | if (utimensat(AT_FDCWD, "/", times, 0) == 0) { | |
cf1a1055 | 286 | log_info("Root directory is writable, skipping check."); |
e375825d | 287 | return EXIT_SUCCESS; |
a84f5192 KS |
288 | } |
289 | ||
e375825d ZJS |
290 | udev_device = udev_device_new_from_devnum(udev, 'b', st.st_dev); |
291 | if (!udev_device) { | |
a9e1f5ec | 292 | log_error("Failed to detect root device."); |
e375825d | 293 | return EXIT_FAILURE; |
a9e1f5ec LP |
294 | } |
295 | ||
e375825d ZJS |
296 | device = udev_device_get_devnode(udev_device); |
297 | if (!device) { | |
a9e1f5ec | 298 | log_error("Failed to detect device node of root directory."); |
e375825d | 299 | return EXIT_FAILURE; |
3e33a44a | 300 | } |
dc8e15c2 LP |
301 | |
302 | root_directory = true; | |
3d20ed6d LP |
303 | } |
304 | ||
94192cda ZJS |
305 | type = udev_device_get_property_value(udev_device, "ID_FS_TYPE"); |
306 | if (type) { | |
eb66db55 | 307 | r = fsck_exists(type); |
571d0134 LP |
308 | if (r == -ENOENT) { |
309 | log_info("fsck.%s doesn't exist, not checking file system on %s", type, device); | |
310 | return EXIT_SUCCESS; | |
311 | } else if (r < 0) | |
da927ba9 | 312 | log_warning_errno(r, "fsck.%s cannot be used for %s: %m", type, device); |
94192cda ZJS |
313 | } |
314 | ||
27d340c7 LP |
315 | if (arg_show_progress) |
316 | if (pipe(progress_pipe) < 0) { | |
56f64d95 | 317 | log_error_errno(errno, "pipe(): %m"); |
e375825d | 318 | return EXIT_FAILURE; |
27d340c7 LP |
319 | } |
320 | ||
3d20ed6d | 321 | cmdline[i++] = "/sbin/fsck"; |
f1f0198c | 322 | cmdline[i++] = arg_repair; |
3d20ed6d | 323 | cmdline[i++] = "-T"; |
c343be28 KS |
324 | |
325 | /* | |
48d3e8d0 KZ |
326 | * Since util-linux v2.25 fsck uses /run/fsck/<diskname>.lock files. |
327 | * The previous versions use flock for the device and conflict with | |
328 | * udevd, see https://bugs.freedesktop.org/show_bug.cgi?id=79576#c5 | |
c343be28 | 329 | */ |
48d3e8d0 | 330 | cmdline[i++] = "-l"; |
dc8e15c2 LP |
331 | |
332 | if (!root_directory) | |
333 | cmdline[i++] = "-M"; | |
3d20ed6d LP |
334 | |
335 | if (arg_force) | |
336 | cmdline[i++] = "-f"; | |
337 | ||
27d340c7 LP |
338 | if (progress_pipe[1] >= 0) { |
339 | snprintf(dash_c, sizeof(dash_c), "-C%i", progress_pipe[1]); | |
340 | char_array_0(dash_c); | |
341 | cmdline[i++] = dash_c; | |
342 | } | |
343 | ||
a9e1f5ec | 344 | cmdline[i++] = device; |
3d20ed6d LP |
345 | cmdline[i++] = NULL; |
346 | ||
27d340c7 LP |
347 | pid = fork(); |
348 | if (pid < 0) { | |
56f64d95 | 349 | log_error_errno(errno, "fork(): %m"); |
3d20ed6d LP |
350 | goto finish; |
351 | } else if (pid == 0) { | |
352 | /* Child */ | |
27d340c7 | 353 | if (progress_pipe[0] >= 0) |
03e334a1 | 354 | safe_close(progress_pipe[0]); |
3d20ed6d LP |
355 | execv(cmdline[0], (char**) cmdline); |
356 | _exit(8); /* Operational error */ | |
357 | } | |
358 | ||
03e334a1 | 359 | progress_pipe[1] = safe_close(progress_pipe[1]); |
27d340c7 LP |
360 | |
361 | if (progress_pipe[0] >= 0) { | |
362 | process_progress(progress_pipe[0]); | |
363 | progress_pipe[0] = -1; | |
364 | } | |
365 | ||
366 | q = wait_for_terminate(pid, &status); | |
367 | if (q < 0) { | |
da927ba9 | 368 | log_error_errno(q, "waitid(): %m"); |
3d20ed6d LP |
369 | goto finish; |
370 | } | |
371 | ||
a9e1f5ec | 372 | if (status.si_code != CLD_EXITED || (status.si_status & ~1)) { |
3d20ed6d | 373 | |
a9e1f5ec LP |
374 | if (status.si_code == CLD_KILLED || status.si_code == CLD_DUMPED) |
375 | log_error("fsck terminated by signal %s.", signal_to_string(status.si_status)); | |
376 | else if (status.si_code == CLD_EXITED) | |
377 | log_error("fsck failed with error code %i.", status.si_status); | |
378 | else | |
379 | log_error("fsck failed due to unknown reason."); | |
3d20ed6d | 380 | |
a4c24ff7 | 381 | if (status.si_code == CLD_EXITED && (status.si_status & 2) && root_directory) |
3d20ed6d | 382 | /* System should be rebooted. */ |
80cfe9e1 | 383 | start_target(SPECIAL_REBOOT_TARGET); |
a4c24ff7 | 384 | else if (status.si_code == CLD_EXITED && (status.si_status & 6)) |
3d20ed6d | 385 | /* Some other problem */ |
80cfe9e1 | 386 | start_target(SPECIAL_EMERGENCY_TARGET); |
a4c24ff7 LP |
387 | else { |
388 | r = EXIT_SUCCESS; | |
389 | log_warning("Ignoring error."); | |
390 | } | |
3d20ed6d LP |
391 | |
392 | } else | |
393 | r = EXIT_SUCCESS; | |
394 | ||
a9e1f5ec | 395 | if (status.si_code == CLD_EXITED && (status.si_status & 1)) |
2b583ce6 | 396 | touch("/run/systemd/quotacheck"); |
3d20ed6d LP |
397 | |
398 | finish: | |
3d94f76c | 399 | safe_close_pair(progress_pipe); |
27d340c7 | 400 | |
3d20ed6d LP |
401 | return r; |
402 | } |