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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> | |
3d20ed6d LP |
25 | #include <errno.h> |
26 | #include <unistd.h> | |
a84f5192 | 27 | #include <fcntl.h> |
27d340c7 | 28 | #include <sys/file.h> |
ac6e2f0d | 29 | #include <sys/stat.h> |
3d20ed6d | 30 | |
0c842e0a | 31 | #include "sd-bus.h" |
9102fdc5 | 32 | #include "sd-device.h" |
3d20ed6d LP |
33 | |
34 | #include "util.h" | |
0b452006 | 35 | #include "process-util.h" |
3d20ed6d | 36 | #include "special.h" |
0c842e0a TG |
37 | #include "bus-util.h" |
38 | #include "bus-error.h" | |
96aad8d1 | 39 | #include "bus-common-errors.h" |
9102fdc5 | 40 | #include "device-util.h" |
eb66db55 | 41 | #include "path-util.h" |
ac6e2f0d DR |
42 | #include "socket-util.h" |
43 | #include "fsckd/fsckd.h" | |
3d20ed6d LP |
44 | |
45 | static bool arg_skip = false; | |
46 | static bool arg_force = false; | |
f1f0198c | 47 | static const char *arg_repair = "-a"; |
3d20ed6d | 48 | |
80cfe9e1 | 49 | static void start_target(const char *target) { |
0c842e0a | 50 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
24996861 | 51 | _cleanup_bus_close_unref_ sd_bus *bus = NULL; |
0c842e0a | 52 | int r; |
3d20ed6d LP |
53 | |
54 | assert(target); | |
55 | ||
0f8bd8de | 56 | r = bus_open_system_systemd(&bus); |
0c842e0a | 57 | if (r < 0) { |
da927ba9 | 58 | log_error_errno(r, "Failed to get D-Bus connection: %m"); |
0c842e0a | 59 | return; |
3d20ed6d LP |
60 | } |
61 | ||
0c842e0a | 62 | log_info("Running request %s/start/replace", target); |
3d20ed6d | 63 | |
90bb85e1 | 64 | /* Start these units only if we can replace base.target with it */ |
0c842e0a TG |
65 | r = sd_bus_call_method(bus, |
66 | "org.freedesktop.systemd1", | |
67 | "/org/freedesktop/systemd1", | |
68 | "org.freedesktop.systemd1.Manager", | |
69 | "StartUnitReplace", | |
70 | &error, | |
71 | NULL, | |
72 | "sss", "basic.target", target, "replace"); | |
3d20ed6d | 73 | |
5220a6f3 LP |
74 | /* Don't print a warning if we aren't called during startup */ |
75 | if (r < 0 && !sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_JOB)) | |
76 | log_error("Failed to start unit: %s", bus_error_message(&error, -r)); | |
3d20ed6d LP |
77 | } |
78 | ||
059cb385 LP |
79 | static int parse_proc_cmdline_item(const char *key, const char *value) { |
80 | ||
81 | if (streq(key, "fsck.mode") && value) { | |
82 | ||
83 | if (streq(value, "auto")) | |
84 | arg_force = arg_skip = false; | |
85 | else if (streq(value, "force")) | |
86 | arg_force = true; | |
87 | else if (streq(value, "skip")) | |
88 | arg_skip = true; | |
89 | else | |
85013844 LP |
90 | log_warning("Invalid fsck.mode= parameter '%s'. Ignoring.", value); |
91 | ||
f1f0198c HHPF |
92 | } else if (streq(key, "fsck.repair") && value) { |
93 | ||
94 | if (streq(value, "preen")) | |
95 | arg_repair = "-a"; | |
96 | else if (streq(value, "yes")) | |
97 | arg_repair = "-y"; | |
98 | else if (streq(value, "no")) | |
99 | arg_repair = "-n"; | |
100 | else | |
85013844 LP |
101 | log_warning("Invalid fsck.repair= parameter '%s'. Ignoring.", value); |
102 | } | |
103 | ||
32f992a5 | 104 | #ifdef HAVE_SYSV_COMPAT |
059cb385 LP |
105 | else if (streq(key, "fastboot") && !value) { |
106 | log_warning("Please pass 'fsck.mode=skip' rather than 'fastboot' on the kernel command line."); | |
141a79f4 | 107 | arg_skip = true; |
85013844 | 108 | |
059cb385 LP |
109 | } else if (streq(key, "forcefsck") && !value) { |
110 | log_warning("Please pass 'fsck.mode=force' rather than 'forcefsck' on the kernel command line."); | |
141a79f4 | 111 | arg_force = true; |
3d20ed6d | 112 | } |
141a79f4 | 113 | #endif |
3d20ed6d | 114 | |
3d20ed6d LP |
115 | return 0; |
116 | } | |
117 | ||
118 | static void test_files(void) { | |
85013844 | 119 | |
32f992a5 LP |
120 | #ifdef HAVE_SYSV_COMPAT |
121 | if (access("/fastboot", F_OK) >= 0) { | |
122 | log_error("Please pass 'fsck.mode=skip' on the kernel command line rather than creating /fastboot on the root file system."); | |
3d20ed6d | 123 | arg_skip = true; |
32f992a5 | 124 | } |
3d20ed6d | 125 | |
32f992a5 LP |
126 | if (access("/forcefsck", F_OK) >= 0) { |
127 | log_error("Please pass 'fsck.mode=force' on the kernel command line rather than creating /forcefsck on the root file system."); | |
3d20ed6d | 128 | arg_force = true; |
32f992a5 LP |
129 | } |
130 | #endif | |
27d340c7 | 131 | |
27d340c7 LP |
132 | } |
133 | ||
07f9a21b | 134 | static int process_progress(int fd, pid_t fsck_pid, dev_t device_num) { |
ac6e2f0d DR |
135 | _cleanup_fclose_ FILE *f = NULL; |
136 | usec_t last = 0; | |
137 | _cleanup_close_ int fsckd_fd = -1; | |
138 | static const union sockaddr_union sa = { | |
139 | .un.sun_family = AF_UNIX, | |
140 | .un.sun_path = FSCKD_SOCKET_PATH, | |
27d340c7 LP |
141 | }; |
142 | ||
ac6e2f0d DR |
143 | fsckd_fd = socket(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0); |
144 | if (fsckd_fd < 0) | |
145 | return log_warning_errno(errno, "Cannot open fsckd socket, we won't report fsck progress: %m"); | |
146 | if (connect(fsckd_fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path)) < 0) | |
147 | return log_warning_errno(errno, "Cannot connect to fsckd socket, we won't report fsck progress: %m"); | |
27d340c7 LP |
148 | |
149 | f = fdopen(fd, "r"); | |
ac6e2f0d DR |
150 | if (!f) |
151 | return log_warning_errno(errno, "Cannot connect to fsck, we won't report fsck progress: %m"); | |
27d340c7 LP |
152 | |
153 | while (!feof(f)) { | |
ac6e2f0d | 154 | int pass; |
07f9a21b | 155 | size_t buflen; |
ac6e2f0d | 156 | size_t cur, max; |
07f9a21b | 157 | ssize_t r; |
27d340c7 | 158 | usec_t t; |
ac6e2f0d DR |
159 | _cleanup_free_ char *device = NULL; |
160 | FsckProgress progress; | |
07f9a21b | 161 | FsckdMessage fsckd_message; |
27d340c7 | 162 | |
1bc48c04 | 163 | if (fscanf(f, "%i %zu %zu %ms", &pass, &cur, &max, &device) != 4) |
27d340c7 LP |
164 | break; |
165 | ||
27d340c7 LP |
166 | /* Only update once every 50ms */ |
167 | t = now(CLOCK_MONOTONIC); | |
e375825d | 168 | if (last + 50 * USEC_PER_MSEC > t) |
27d340c7 | 169 | continue; |
27d340c7 LP |
170 | |
171 | last = t; | |
172 | ||
ac6e2f0d DR |
173 | /* send progress to fsckd */ |
174 | progress.devnum = device_num; | |
175 | progress.cur = cur; | |
176 | progress.max = max; | |
177 | progress.pass = pass; | |
27d340c7 | 178 | |
07f9a21b DR |
179 | r = send(fsckd_fd, &progress, sizeof(FsckProgress), 0); |
180 | if (r < 0 || (size_t) r < sizeof(FsckProgress)) | |
ac6e2f0d | 181 | log_warning_errno(errno, "Cannot communicate fsck progress to fsckd: %m"); |
07f9a21b DR |
182 | |
183 | /* get fsckd requests, only read when we have coherent size data */ | |
184 | r = ioctl(fsckd_fd, FIONREAD, &buflen); | |
185 | if (r == 0 && (size_t) buflen >= sizeof(FsckdMessage)) { | |
186 | r = recv(fsckd_fd, &fsckd_message, sizeof(FsckdMessage), 0); | |
187 | if (r > 0 && fsckd_message.cancel == 1) { | |
188 | log_info("Request to cancel fsck from fsckd"); | |
189 | kill(fsck_pid, SIGTERM); | |
190 | } | |
191 | } | |
27d340c7 LP |
192 | } |
193 | ||
27d340c7 | 194 | return 0; |
3d20ed6d LP |
195 | } |
196 | ||
197 | int main(int argc, char *argv[]) { | |
27d340c7 | 198 | const char *cmdline[9]; |
3d20ed6d LP |
199 | int i = 0, r = EXIT_FAILURE, q; |
200 | pid_t pid; | |
07f9a21b | 201 | int progress_rc; |
3d20ed6d | 202 | siginfo_t status; |
9102fdc5 | 203 | _cleanup_device_unref_ sd_device *dev = NULL; |
94192cda | 204 | const char *device, *type; |
dc8e15c2 | 205 | bool root_directory; |
1952708a | 206 | _cleanup_close_pair_ int progress_pipe[2] = { -1, -1 }; |
5ffa8c81 | 207 | char dash_c[sizeof("-C")-1 + DECIMAL_STR_MAX(int) + 1]; |
94192cda | 208 | struct stat st; |
3d20ed6d | 209 | |
a9e1f5ec LP |
210 | if (argc > 2) { |
211 | log_error("This program expects one or no arguments."); | |
3d20ed6d LP |
212 | return EXIT_FAILURE; |
213 | } | |
214 | ||
27d340c7 | 215 | log_set_target(LOG_TARGET_AUTO); |
3d20ed6d LP |
216 | log_parse_environment(); |
217 | log_open(); | |
218 | ||
4c12626c LP |
219 | umask(0022); |
220 | ||
b5884878 LP |
221 | q = parse_proc_cmdline(parse_proc_cmdline_item); |
222 | if (q < 0) | |
da927ba9 | 223 | log_warning_errno(q, "Failed to parse kernel command line, ignoring: %m"); |
b5884878 | 224 | |
3d20ed6d LP |
225 | test_files(); |
226 | ||
566690fd LP |
227 | if (!arg_force && arg_skip) { |
228 | r = 0; | |
229 | goto finish; | |
230 | } | |
a9e1f5ec | 231 | |
dc8e15c2 | 232 | if (argc > 1) { |
a9e1f5ec | 233 | device = argv[1]; |
dc8e15c2 | 234 | root_directory = false; |
94192cda ZJS |
235 | |
236 | if (stat(device, &st) < 0) { | |
566690fd LP |
237 | r = log_error_errno(errno, "Failed to stat '%s': %m", device); |
238 | goto finish; | |
94192cda ZJS |
239 | } |
240 | ||
9102fdc5 TG |
241 | r = sd_device_new_from_devnum(&dev, 'b', st.st_rdev); |
242 | if (r < 0) { | |
243 | log_error_errno(r, "Failed to detect device %s: %m", device); | |
566690fd | 244 | goto finish; |
94192cda | 245 | } |
dc8e15c2 | 246 | } else { |
a84f5192 | 247 | struct timespec times[2]; |
3d20ed6d | 248 | |
a9e1f5ec LP |
249 | /* Find root device */ |
250 | ||
251 | if (stat("/", &st) < 0) { | |
566690fd LP |
252 | r = log_error_errno(errno, "Failed to stat() the root directory: %m"); |
253 | goto finish; | |
a9e1f5ec LP |
254 | } |
255 | ||
256 | /* Virtual root devices don't need an fsck */ | |
566690fd LP |
257 | if (major(st.st_dev) == 0) { |
258 | log_debug("Root directory is virtual, skipping check."); | |
259 | r = 0; | |
260 | goto finish; | |
261 | } | |
a9e1f5ec | 262 | |
a84f5192 KS |
263 | /* check if we are already writable */ |
264 | times[0] = st.st_atim; | |
265 | times[1] = st.st_mtim; | |
266 | if (utimensat(AT_FDCWD, "/", times, 0) == 0) { | |
cf1a1055 | 267 | log_info("Root directory is writable, skipping check."); |
566690fd LP |
268 | r = 0; |
269 | goto finish; | |
a84f5192 KS |
270 | } |
271 | ||
9102fdc5 TG |
272 | r = sd_device_new_from_devnum(&dev, 'b', st.st_dev); |
273 | if (r < 0) { | |
274 | log_error_errno(r, "Failed to detect root device: %m"); | |
566690fd | 275 | goto finish; |
a9e1f5ec LP |
276 | } |
277 | ||
9102fdc5 TG |
278 | r = sd_device_get_devname(dev, &device); |
279 | if (r < 0) { | |
280 | log_error_errno(r, "Failed to detect device node of root directory: %m"); | |
566690fd LP |
281 | r = -ENXIO; |
282 | goto finish; | |
3e33a44a | 283 | } |
dc8e15c2 LP |
284 | |
285 | root_directory = true; | |
3d20ed6d LP |
286 | } |
287 | ||
9102fdc5 TG |
288 | r = sd_device_get_property_value(dev, "ID_FS_TYPE", &type); |
289 | if (r >= 0) { | |
eb66db55 | 290 | r = fsck_exists(type); |
571d0134 LP |
291 | if (r == -ENOENT) { |
292 | log_info("fsck.%s doesn't exist, not checking file system on %s", type, device); | |
566690fd LP |
293 | r = 0; |
294 | goto finish; | |
571d0134 | 295 | } else if (r < 0) |
da927ba9 | 296 | log_warning_errno(r, "fsck.%s cannot be used for %s: %m", type, device); |
94192cda ZJS |
297 | } |
298 | ||
19e887e7 | 299 | if (pipe(progress_pipe) < 0) { |
566690fd LP |
300 | r = log_error_errno(errno, "pipe(): %m"); |
301 | goto finish; | |
19e887e7 | 302 | } |
27d340c7 | 303 | |
3d20ed6d | 304 | cmdline[i++] = "/sbin/fsck"; |
f1f0198c | 305 | cmdline[i++] = arg_repair; |
3d20ed6d | 306 | cmdline[i++] = "-T"; |
c343be28 KS |
307 | |
308 | /* | |
48d3e8d0 KZ |
309 | * Since util-linux v2.25 fsck uses /run/fsck/<diskname>.lock files. |
310 | * The previous versions use flock for the device and conflict with | |
311 | * udevd, see https://bugs.freedesktop.org/show_bug.cgi?id=79576#c5 | |
c343be28 | 312 | */ |
48d3e8d0 | 313 | cmdline[i++] = "-l"; |
dc8e15c2 LP |
314 | |
315 | if (!root_directory) | |
316 | cmdline[i++] = "-M"; | |
3d20ed6d LP |
317 | |
318 | if (arg_force) | |
319 | cmdline[i++] = "-f"; | |
320 | ||
576a13ea ZJS |
321 | xsprintf(dash_c, "-C%i", progress_pipe[1]); |
322 | cmdline[i++] = dash_c; | |
27d340c7 | 323 | |
a9e1f5ec | 324 | cmdline[i++] = device; |
3d20ed6d LP |
325 | cmdline[i++] = NULL; |
326 | ||
27d340c7 LP |
327 | pid = fork(); |
328 | if (pid < 0) { | |
566690fd | 329 | r = log_error_errno(errno, "fork(): %m"); |
3d20ed6d LP |
330 | goto finish; |
331 | } else if (pid == 0) { | |
332 | /* Child */ | |
1952708a | 333 | progress_pipe[0] = safe_close(progress_pipe[0]); |
3d20ed6d LP |
334 | execv(cmdline[0], (char**) cmdline); |
335 | _exit(8); /* Operational error */ | |
336 | } | |
337 | ||
03e334a1 | 338 | progress_pipe[1] = safe_close(progress_pipe[1]); |
27d340c7 | 339 | |
576a13ea ZJS |
340 | progress_rc = process_progress(progress_pipe[0], pid, st.st_rdev); |
341 | progress_pipe[0] = -1; | |
27d340c7 | 342 | |
566690fd LP |
343 | r = wait_for_terminate(pid, &status); |
344 | if (r < 0) { | |
345 | log_error_errno(r, "waitid(): %m"); | |
3d20ed6d LP |
346 | goto finish; |
347 | } | |
348 | ||
07f9a21b | 349 | if (status.si_code != CLD_EXITED || (status.si_status & ~1) || progress_rc != 0) { |
3d20ed6d | 350 | |
07f9a21b DR |
351 | /* cancel will kill fsck (but process_progress returns 0) */ |
352 | if ((progress_rc != 0 && status.si_code == CLD_KILLED) || status.si_code == CLD_DUMPED) | |
a9e1f5ec LP |
353 | log_error("fsck terminated by signal %s.", signal_to_string(status.si_status)); |
354 | else if (status.si_code == CLD_EXITED) | |
355 | log_error("fsck failed with error code %i.", status.si_status); | |
07f9a21b | 356 | else if (progress_rc != 0) |
a9e1f5ec | 357 | log_error("fsck failed due to unknown reason."); |
3d20ed6d | 358 | |
566690fd LP |
359 | r = -EINVAL; |
360 | ||
a4c24ff7 | 361 | if (status.si_code == CLD_EXITED && (status.si_status & 2) && root_directory) |
3d20ed6d | 362 | /* System should be rebooted. */ |
80cfe9e1 | 363 | start_target(SPECIAL_REBOOT_TARGET); |
a4c24ff7 | 364 | else if (status.si_code == CLD_EXITED && (status.si_status & 6)) |
3d20ed6d | 365 | /* Some other problem */ |
80cfe9e1 | 366 | start_target(SPECIAL_EMERGENCY_TARGET); |
a4c24ff7 | 367 | else { |
566690fd | 368 | r = 0; |
07f9a21b DR |
369 | if (progress_rc != 0) |
370 | log_warning("Ignoring error."); | |
a4c24ff7 | 371 | } |
3d20ed6d LP |
372 | |
373 | } else | |
566690fd | 374 | r = 0; |
3d20ed6d | 375 | |
a9e1f5ec | 376 | if (status.si_code == CLD_EXITED && (status.si_status & 1)) |
2b583ce6 | 377 | touch("/run/systemd/quotacheck"); |
3d20ed6d LP |
378 | |
379 | finish: | |
566690fd | 380 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
3d20ed6d | 381 | } |