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d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
60918275 | 2 | |
a7334b09 LP |
3 | /*** |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
a7334b09 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
ea430986 LP |
22 | #include <dbus/dbus.h> |
23 | ||
60918275 LP |
24 | #include <stdio.h> |
25 | #include <errno.h> | |
26 | #include <string.h> | |
16354eff | 27 | #include <unistd.h> |
4ade7963 LP |
28 | #include <sys/types.h> |
29 | #include <sys/stat.h> | |
f170852a | 30 | #include <getopt.h> |
97c4f35c | 31 | #include <signal.h> |
4fc935ca | 32 | #include <sys/wait.h> |
80876c20 | 33 | #include <fcntl.h> |
f3b6a3ed | 34 | #include <sys/prctl.h> |
664f88a7 | 35 | #include <sys/mount.h> |
60918275 LP |
36 | |
37 | #include "manager.h" | |
16354eff | 38 | #include "log.h" |
302e8c4c | 39 | #include "load-fragment.h" |
a16e1123 | 40 | #include "fdset.h" |
514f4ef5 | 41 | #include "special.h" |
487393e9 | 42 | #include "conf-parser.h" |
449101fc | 43 | #include "dbus-common.h" |
ad780f19 | 44 | #include "missing.h" |
e51bc1a2 | 45 | #include "label.h" |
302e27c8 | 46 | #include "build.h" |
06d4c99a | 47 | #include "strv.h" |
f6a6225e | 48 | #include "def.h" |
b52aae1d | 49 | #include "virt.h" |
e96d6be7 | 50 | #include "watchdog.h" |
664f88a7 | 51 | #include "path-util.h" |
41669317 | 52 | #include "switch-root.h" |
ec8927ca | 53 | #include "capability.h" |
bd3fa1d2 | 54 | #include "killall.h" |
0c4025d1 LP |
55 | #include "env-util.h" |
56 | #include "hwclock.h" | |
57 | #include "sd-daemon.h" | |
e8e581bf | 58 | #include "sd-messages.h" |
60918275 | 59 | |
b6e66135 LP |
60 | #include "mount-setup.h" |
61 | #include "loopback-setup.h" | |
e3043162 | 62 | #ifdef HAVE_KMOD |
b6e66135 | 63 | #include "kmod-setup.h" |
e3043162 | 64 | #endif |
b6e66135 LP |
65 | #include "hostname-setup.h" |
66 | #include "machine-id-setup.h" | |
b6e66135 LP |
67 | #include "selinux-setup.h" |
68 | #include "ima-setup.h" | |
a5c32cff | 69 | #include "fileio.h" |
ffbd2c4d | 70 | #include "smack-setup.h" |
b6e66135 | 71 | |
f170852a LP |
72 | static enum { |
73 | ACTION_RUN, | |
e965d56d | 74 | ACTION_HELP, |
9ba0bc4e | 75 | ACTION_VERSION, |
e537352b | 76 | ACTION_TEST, |
4288f619 LP |
77 | ACTION_DUMP_CONFIGURATION_ITEMS, |
78 | ACTION_DONE | |
fa0f4d8a | 79 | } arg_action = ACTION_RUN; |
f170852a | 80 | |
fa0f4d8a | 81 | static char *arg_default_unit = NULL; |
67445f4e | 82 | static SystemdRunningAs arg_running_as = _SYSTEMD_RUNNING_AS_INVALID; |
fa0f4d8a LP |
83 | |
84 | static bool arg_dump_core = true; | |
85 | static bool arg_crash_shell = false; | |
86 | static int arg_crash_chvt = -1; | |
87 | static bool arg_confirm_spawn = false; | |
9e58ff9c | 88 | static bool arg_show_status = true; |
bf4df7c3 | 89 | static bool arg_switched_root = false; |
0c85a4f3 | 90 | static char ***arg_join_controllers = NULL; |
706343f4 | 91 | static ExecOutput arg_default_std_output = EXEC_OUTPUT_JOURNAL; |
0a494f1f | 92 | static ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT; |
e96d6be7 LP |
93 | static usec_t arg_runtime_watchdog = 0; |
94 | static usec_t arg_shutdown_watchdog = 10 * USEC_PER_MINUTE; | |
97d0e5f8 | 95 | static char **arg_default_environment = NULL; |
c93ff2e9 | 96 | static struct rlimit *arg_default_rlimit[RLIMIT_NLIMITS] = {}; |
ec8927ca | 97 | static uint64_t arg_capability_bounding_set_drop = 0; |
aa0f64ac | 98 | static nsec_t arg_timer_slack_nsec = (nsec_t) -1; |
4fc935ca | 99 | |
a16e1123 | 100 | static FILE* serialization = NULL; |
80876c20 | 101 | |
6f5e3f35 LP |
102 | static void nop_handler(int sig) { |
103 | } | |
104 | ||
93a46b0b | 105 | _noreturn_ static void crash(int sig) { |
97c4f35c | 106 | |
abb26902 LP |
107 | if (getpid() != 1) |
108 | /* Pass this on immediately, if this is not PID 1 */ | |
109 | raise(sig); | |
110 | else if (!arg_dump_core) | |
582a507f | 111 | log_error("Caught <%s>, not dumping core.", signal_to_string(sig)); |
97c4f35c | 112 | else { |
b92bea5d ZJS |
113 | struct sigaction sa = { |
114 | .sa_handler = nop_handler, | |
115 | .sa_flags = SA_NOCLDSTOP|SA_RESTART, | |
116 | }; | |
97c4f35c LP |
117 | pid_t pid; |
118 | ||
6f5e3f35 | 119 | /* We want to wait for the core process, hence let's enable SIGCHLD */ |
abb26902 | 120 | sigaction(SIGCHLD, &sa, NULL); |
6f5e3f35 | 121 | |
e62d8c39 ZJS |
122 | pid = fork(); |
123 | if (pid < 0) | |
7989e1f2 | 124 | log_error("Caught <%s>, cannot fork for core dump: %s", signal_to_string(sig), strerror(errno)); |
97c4f35c LP |
125 | |
126 | else if (pid == 0) { | |
b92bea5d | 127 | struct rlimit rl = {}; |
97c4f35c LP |
128 | |
129 | /* Enable default signal handler for core dump */ | |
130 | zero(sa); | |
131 | sa.sa_handler = SIG_DFL; | |
abb26902 | 132 | sigaction(sig, &sa, NULL); |
97c4f35c LP |
133 | |
134 | /* Don't limit the core dump size */ | |
97c4f35c LP |
135 | rl.rlim_cur = RLIM_INFINITY; |
136 | rl.rlim_max = RLIM_INFINITY; | |
137 | setrlimit(RLIMIT_CORE, &rl); | |
138 | ||
139 | /* Just to be sure... */ | |
abb26902 | 140 | chdir("/"); |
97c4f35c LP |
141 | |
142 | /* Raise the signal again */ | |
143 | raise(sig); | |
144 | ||
145 | assert_not_reached("We shouldn't be here..."); | |
146 | _exit(1); | |
4fc935ca LP |
147 | |
148 | } else { | |
8e12a6ae LP |
149 | siginfo_t status; |
150 | int r; | |
4fc935ca LP |
151 | |
152 | /* Order things nicely. */ | |
e62d8c39 ZJS |
153 | r = wait_for_terminate(pid, &status); |
154 | if (r < 0) | |
7989e1f2 | 155 | log_error("Caught <%s>, waitpid() failed: %s", signal_to_string(sig), strerror(-r)); |
8e12a6ae | 156 | else if (status.si_code != CLD_DUMPED) |
7989e1f2 | 157 | log_error("Caught <%s>, core dump failed.", signal_to_string(sig)); |
4fc935ca | 158 | else |
7989e1f2 | 159 | log_error("Caught <%s>, dumped core as pid %lu.", signal_to_string(sig), (unsigned long) pid); |
97c4f35c LP |
160 | } |
161 | } | |
162 | ||
fa0f4d8a LP |
163 | if (arg_crash_chvt) |
164 | chvt(arg_crash_chvt); | |
601f6a1e | 165 | |
fa0f4d8a | 166 | if (arg_crash_shell) { |
b92bea5d ZJS |
167 | struct sigaction sa = { |
168 | .sa_handler = SIG_IGN, | |
169 | .sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART, | |
170 | }; | |
6f5e3f35 | 171 | pid_t pid; |
8c43883a | 172 | |
4fc935ca LP |
173 | log_info("Executing crash shell in 10s..."); |
174 | sleep(10); | |
175 | ||
6f5e3f35 | 176 | /* Let the kernel reap children for us */ |
6f5e3f35 | 177 | assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); |
8c43883a | 178 | |
cd3bd60a LP |
179 | pid = fork(); |
180 | if (pid < 0) | |
14212119 | 181 | log_error("Failed to fork off crash shell: %m"); |
6f5e3f35 | 182 | else if (pid == 0) { |
cd3bd60a | 183 | make_console_stdio(); |
6f5e3f35 LP |
184 | execl("/bin/sh", "/bin/sh", NULL); |
185 | ||
14212119 | 186 | log_error("execl() failed: %m"); |
6f5e3f35 LP |
187 | _exit(1); |
188 | } | |
c99b188e | 189 | |
7989e1f2 | 190 | log_info("Successfully spawned crash shell as pid %lu.", (unsigned long) pid); |
4fc935ca LP |
191 | } |
192 | ||
193 | log_info("Freezing execution."); | |
97c4f35c LP |
194 | freeze(); |
195 | } | |
196 | ||
197 | static void install_crash_handler(void) { | |
b92bea5d ZJS |
198 | struct sigaction sa = { |
199 | .sa_handler = crash, | |
200 | .sa_flags = SA_NODEFER, | |
201 | }; | |
97c4f35c | 202 | |
1b91d3e8 | 203 | sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1); |
97c4f35c | 204 | } |
f170852a | 205 | |
843d2643 LP |
206 | static int console_setup(bool do_reset) { |
207 | int tty_fd, r; | |
80876c20 | 208 | |
843d2643 LP |
209 | /* If we are init, we connect stdin/stdout/stderr to /dev/null |
210 | * and make sure we don't have a controlling tty. */ | |
80876c20 | 211 | |
843d2643 LP |
212 | release_terminal(); |
213 | ||
214 | if (!do_reset) | |
215 | return 0; | |
80876c20 | 216 | |
512947d4 MS |
217 | tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC); |
218 | if (tty_fd < 0) { | |
843d2643 LP |
219 | log_error("Failed to open /dev/console: %s", strerror(-tty_fd)); |
220 | return -tty_fd; | |
221 | } | |
80876c20 | 222 | |
512947d4 MS |
223 | /* We don't want to force text mode. |
224 | * plymouth may be showing pictures already from initrd. */ | |
225 | r = reset_terminal_fd(tty_fd, false); | |
226 | if (r < 0) | |
843d2643 LP |
227 | log_error("Failed to reset /dev/console: %s", strerror(-r)); |
228 | ||
229 | close_nointr_nofail(tty_fd); | |
80876c20 LP |
230 | return r; |
231 | } | |
232 | ||
f170852a LP |
233 | static int set_default_unit(const char *u) { |
234 | char *c; | |
235 | ||
236 | assert(u); | |
237 | ||
bf4df7c3 LP |
238 | c = strdup(u); |
239 | if (!c) | |
f170852a LP |
240 | return -ENOMEM; |
241 | ||
fa0f4d8a LP |
242 | free(arg_default_unit); |
243 | arg_default_unit = c; | |
bf4df7c3 | 244 | |
f170852a LP |
245 | return 0; |
246 | } | |
247 | ||
248 | static int parse_proc_cmdline_word(const char *word) { | |
249 | ||
250 | static const char * const rlmap[] = { | |
ed370f5d | 251 | "emergency", SPECIAL_EMERGENCY_TARGET, |
099663ff | 252 | "-b", SPECIAL_EMERGENCY_TARGET, |
ed370f5d LP |
253 | "single", SPECIAL_RESCUE_TARGET, |
254 | "-s", SPECIAL_RESCUE_TARGET, | |
255 | "s", SPECIAL_RESCUE_TARGET, | |
256 | "S", SPECIAL_RESCUE_TARGET, | |
257 | "1", SPECIAL_RESCUE_TARGET, | |
258 | "2", SPECIAL_RUNLEVEL2_TARGET, | |
259 | "3", SPECIAL_RUNLEVEL3_TARGET, | |
260 | "4", SPECIAL_RUNLEVEL4_TARGET, | |
261 | "5", SPECIAL_RUNLEVEL5_TARGET, | |
f170852a LP |
262 | }; |
263 | ||
5192bd19 LP |
264 | assert(word); |
265 | ||
bf4df7c3 LP |
266 | if (startswith(word, "systemd.unit=")) { |
267 | ||
268 | if (!in_initrd()) | |
269 | return set_default_unit(word + 13); | |
270 | ||
271 | } else if (startswith(word, "rd.systemd.unit=")) { | |
272 | ||
273 | if (in_initrd()) | |
274 | return set_default_unit(word + 16); | |
f170852a | 275 | |
bf4df7c3 | 276 | } else if (startswith(word, "systemd.log_target=")) { |
f170852a LP |
277 | |
278 | if (log_set_target_from_string(word + 19) < 0) | |
279 | log_warning("Failed to parse log target %s. Ignoring.", word + 19); | |
280 | ||
281 | } else if (startswith(word, "systemd.log_level=")) { | |
282 | ||
283 | if (log_set_max_level_from_string(word + 18) < 0) | |
284 | log_warning("Failed to parse log level %s. Ignoring.", word + 18); | |
285 | ||
bbe63281 LP |
286 | } else if (startswith(word, "systemd.log_color=")) { |
287 | ||
288 | if (log_show_color_from_string(word + 18) < 0) | |
289 | log_warning("Failed to parse log color setting %s. Ignoring.", word + 18); | |
290 | ||
291 | } else if (startswith(word, "systemd.log_location=")) { | |
292 | ||
293 | if (log_show_location_from_string(word + 21) < 0) | |
294 | log_warning("Failed to parse log location setting %s. Ignoring.", word + 21); | |
295 | ||
4fc935ca LP |
296 | } else if (startswith(word, "systemd.dump_core=")) { |
297 | int r; | |
298 | ||
299 | if ((r = parse_boolean(word + 18)) < 0) | |
509b6efb | 300 | log_warning("Failed to parse dump core switch %s. Ignoring.", word + 18); |
4fc935ca | 301 | else |
fa0f4d8a | 302 | arg_dump_core = r; |
4fc935ca LP |
303 | |
304 | } else if (startswith(word, "systemd.crash_shell=")) { | |
305 | int r; | |
306 | ||
307 | if ((r = parse_boolean(word + 20)) < 0) | |
509b6efb | 308 | log_warning("Failed to parse crash shell switch %s. Ignoring.", word + 20); |
4fc935ca | 309 | else |
fa0f4d8a | 310 | arg_crash_shell = r; |
5e7ee61c LP |
311 | |
312 | } else if (startswith(word, "systemd.confirm_spawn=")) { | |
313 | int r; | |
314 | ||
315 | if ((r = parse_boolean(word + 22)) < 0) | |
509b6efb | 316 | log_warning("Failed to parse confirm spawn switch %s. Ignoring.", word + 22); |
5e7ee61c | 317 | else |
fa0f4d8a | 318 | arg_confirm_spawn = r; |
5e7ee61c | 319 | |
601f6a1e LP |
320 | } else if (startswith(word, "systemd.crash_chvt=")) { |
321 | int k; | |
322 | ||
323 | if (safe_atoi(word + 19, &k) < 0) | |
509b6efb | 324 | log_warning("Failed to parse crash chvt switch %s. Ignoring.", word + 19); |
601f6a1e | 325 | else |
fa0f4d8a | 326 | arg_crash_chvt = k; |
601f6a1e | 327 | |
9e58ff9c LP |
328 | } else if (startswith(word, "systemd.show_status=")) { |
329 | int r; | |
330 | ||
331 | if ((r = parse_boolean(word + 20)) < 0) | |
509b6efb | 332 | log_warning("Failed to parse show status switch %s. Ignoring.", word + 20); |
6e98720f | 333 | else |
9e58ff9c | 334 | arg_show_status = r; |
0a494f1f LP |
335 | } else if (startswith(word, "systemd.default_standard_output=")) { |
336 | int r; | |
337 | ||
338 | if ((r = exec_output_from_string(word + 32)) < 0) | |
509b6efb | 339 | log_warning("Failed to parse default standard output switch %s. Ignoring.", word + 32); |
0a494f1f LP |
340 | else |
341 | arg_default_std_output = r; | |
342 | } else if (startswith(word, "systemd.default_standard_error=")) { | |
343 | int r; | |
344 | ||
345 | if ((r = exec_output_from_string(word + 31)) < 0) | |
509b6efb | 346 | log_warning("Failed to parse default standard error switch %s. Ignoring.", word + 31); |
0a494f1f LP |
347 | else |
348 | arg_default_std_error = r; | |
9e7c5357 | 349 | } else if (startswith(word, "systemd.setenv=")) { |
0c4025d1 | 350 | _cleanup_free_ char *cenv = NULL; |
9e7c5357 WD |
351 | |
352 | cenv = strdup(word + 15); | |
353 | if (!cenv) | |
354 | return -ENOMEM; | |
355 | ||
e21fea24 KS |
356 | if (env_assignment_is_valid(cenv)) { |
357 | char **env; | |
358 | ||
359 | env = strv_env_set(arg_default_environment, cenv); | |
360 | if (env) | |
361 | arg_default_environment = env; | |
362 | else | |
363 | log_warning("Setting environment variable '%s' failed, ignoring: %m", cenv); | |
364 | } else | |
365 | log_warning("Environment variable name '%s' is not valid. Ignoring.", cenv); | |
9e58ff9c | 366 | |
66a78c2b LP |
367 | } else if (startswith(word, "systemd.") || |
368 | (in_initrd() && startswith(word, "rd.systemd."))) { | |
4fc935ca | 369 | |
dd7c30c3 LP |
370 | const char *c; |
371 | ||
372 | /* Ignore systemd.journald.xyz and friends */ | |
373 | c = word; | |
374 | if (startswith(c, "rd.")) | |
375 | c += 3; | |
376 | if (startswith(c, "systemd.")) | |
377 | c += 8; | |
378 | if (c[strcspn(c, ".=")] != '.') { | |
379 | ||
380 | log_warning("Unknown kernel switch %s. Ignoring.", word); | |
381 | ||
382 | log_info("Supported kernel switches:\n" | |
383 | "systemd.unit=UNIT Default unit to start\n" | |
384 | "rd.systemd.unit=UNIT Default unit to start when run in initrd\n" | |
385 | "systemd.dump_core=0|1 Dump core on crash\n" | |
386 | "systemd.crash_shell=0|1 Run shell on crash\n" | |
387 | "systemd.crash_chvt=N Change to VT #N on crash\n" | |
388 | "systemd.confirm_spawn=0|1 Confirm every process spawn\n" | |
389 | "systemd.show_status=0|1 Show status updates on the console during bootup\n" | |
390 | "systemd.log_target=console|kmsg|journal|journal-or-kmsg|syslog|syslog-or-kmsg|null\n" | |
391 | " Log target\n" | |
392 | "systemd.log_level=LEVEL Log level\n" | |
393 | "systemd.log_color=0|1 Highlight important log messages\n" | |
394 | "systemd.log_location=0|1 Include code location in log messages\n" | |
395 | "systemd.default_standard_output=null|tty|syslog|syslog+console|kmsg|kmsg+console|journal|journal+console\n" | |
396 | " Set default log output for services\n" | |
397 | "systemd.default_standard_error=null|tty|syslog|syslog+console|kmsg|kmsg+console|journal|journal+console\n" | |
398 | " Set default log error output for services\n" | |
399 | "systemd.setenv=ASSIGNMENT Set an environment variable for all spawned processes\n"); | |
400 | } | |
4fc935ca | 401 | |
d081dffb | 402 | } else if (streq(word, "quiet")) |
6e98720f | 403 | arg_show_status = false; |
bd6d2963 KS |
404 | else if (streq(word, "debug")) { |
405 | /* Log to kmsg, the journal socket will fill up before the | |
406 | * journal is started and tools running during that time | |
407 | * will block with every log message for for 60 seconds, | |
408 | * before they give up. */ | |
9749cd77 | 409 | log_set_max_level(LOG_DEBUG); |
bd6d2963 KS |
410 | log_set_target(LOG_TARGET_KMSG); |
411 | } else if (!in_initrd()) { | |
f170852a LP |
412 | unsigned i; |
413 | ||
414 | /* SysV compatibility */ | |
f170852a LP |
415 | for (i = 0; i < ELEMENTSOF(rlmap); i += 2) |
416 | if (streq(word, rlmap[i])) | |
417 | return set_default_unit(rlmap[i+1]); | |
418 | } | |
419 | ||
420 | return 0; | |
421 | } | |
422 | ||
e8e581bf ZJS |
423 | #define DEFINE_SETTER(name, func, descr) \ |
424 | static int name(const char *unit, \ | |
425 | const char *filename, \ | |
426 | unsigned line, \ | |
427 | const char *section, \ | |
428 | const char *lvalue, \ | |
429 | int ltype, \ | |
430 | const char *rvalue, \ | |
431 | void *data, \ | |
432 | void *userdata) { \ | |
433 | \ | |
434 | int r; \ | |
435 | \ | |
436 | assert(filename); \ | |
437 | assert(lvalue); \ | |
438 | assert(rvalue); \ | |
439 | \ | |
440 | r = func(rvalue); \ | |
441 | if (r < 0) \ | |
442 | log_syntax(unit, LOG_ERR, filename, line, -r, \ | |
443 | "Invalid " descr "'%s': %s", \ | |
444 | rvalue, strerror(-r)); \ | |
445 | \ | |
446 | return 0; \ | |
447 | } | |
487393e9 | 448 | |
e8e581bf ZJS |
449 | DEFINE_SETTER(config_parse_level2, log_set_max_level_from_string, "log level") |
450 | DEFINE_SETTER(config_parse_target, log_set_target_from_string, "target") | |
451 | DEFINE_SETTER(config_parse_color, log_show_color_from_string, "color" ) | |
452 | DEFINE_SETTER(config_parse_location, log_show_location_from_string, "location") | |
487393e9 | 453 | |
487393e9 | 454 | |
e8e581bf ZJS |
455 | static int config_parse_cpu_affinity2(const char *unit, |
456 | const char *filename, | |
457 | unsigned line, | |
458 | const char *section, | |
459 | const char *lvalue, | |
460 | int ltype, | |
461 | const char *rvalue, | |
462 | void *data, | |
463 | void *userdata) { | |
487393e9 LP |
464 | |
465 | char *w; | |
466 | size_t l; | |
467 | char *state; | |
468 | cpu_set_t *c = NULL; | |
469 | unsigned ncpus = 0; | |
470 | ||
471 | assert(filename); | |
472 | assert(lvalue); | |
473 | assert(rvalue); | |
474 | ||
f60f22df | 475 | FOREACH_WORD_QUOTED(w, l, rvalue, state) { |
487393e9 LP |
476 | char *t; |
477 | int r; | |
478 | unsigned cpu; | |
479 | ||
480 | if (!(t = strndup(w, l))) | |
14212119 | 481 | return log_oom(); |
487393e9 LP |
482 | |
483 | r = safe_atou(t, &cpu); | |
484 | free(t); | |
485 | ||
486 | if (!c) | |
487 | if (!(c = cpu_set_malloc(&ncpus))) | |
14212119 | 488 | return log_oom(); |
487393e9 LP |
489 | |
490 | if (r < 0 || cpu >= ncpus) { | |
e8e581bf ZJS |
491 | log_syntax(unit, LOG_ERR, filename, line, -r, |
492 | "Failed to parse CPU affinity '%s'", rvalue); | |
487393e9 LP |
493 | CPU_FREE(c); |
494 | return -EBADMSG; | |
495 | } | |
496 | ||
497 | CPU_SET_S(cpu, CPU_ALLOC_SIZE(ncpus), c); | |
498 | } | |
499 | ||
500 | if (c) { | |
501 | if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0) | |
e8e581bf | 502 | log_warning_unit(unit, "Failed to set CPU affinity: %m"); |
487393e9 LP |
503 | |
504 | CPU_FREE(c); | |
505 | } | |
506 | ||
507 | return 0; | |
508 | } | |
509 | ||
0c85a4f3 LP |
510 | static void strv_free_free(char ***l) { |
511 | char ***i; | |
512 | ||
513 | if (!l) | |
514 | return; | |
515 | ||
516 | for (i = l; *i; i++) | |
517 | strv_free(*i); | |
518 | ||
519 | free(l); | |
520 | } | |
521 | ||
522 | static void free_join_controllers(void) { | |
0c85a4f3 LP |
523 | strv_free_free(arg_join_controllers); |
524 | arg_join_controllers = NULL; | |
525 | } | |
526 | ||
e8e581bf ZJS |
527 | static int config_parse_join_controllers(const char *unit, |
528 | const char *filename, | |
529 | unsigned line, | |
530 | const char *section, | |
531 | const char *lvalue, | |
532 | int ltype, | |
533 | const char *rvalue, | |
534 | void *data, | |
535 | void *userdata) { | |
0c85a4f3 LP |
536 | |
537 | unsigned n = 0; | |
538 | char *state, *w; | |
539 | size_t length; | |
540 | ||
541 | assert(filename); | |
542 | assert(lvalue); | |
543 | assert(rvalue); | |
544 | ||
545 | free_join_controllers(); | |
546 | ||
547 | FOREACH_WORD_QUOTED(w, length, rvalue, state) { | |
548 | char *s, **l; | |
549 | ||
550 | s = strndup(w, length); | |
551 | if (!s) | |
14212119 | 552 | return log_oom(); |
0c85a4f3 LP |
553 | |
554 | l = strv_split(s, ","); | |
555 | free(s); | |
556 | ||
557 | strv_uniq(l); | |
558 | ||
559 | if (strv_length(l) <= 1) { | |
560 | strv_free(l); | |
561 | continue; | |
562 | } | |
563 | ||
564 | if (!arg_join_controllers) { | |
565 | arg_join_controllers = new(char**, 2); | |
566 | if (!arg_join_controllers) { | |
567 | strv_free(l); | |
14212119 | 568 | return log_oom(); |
0c85a4f3 LP |
569 | } |
570 | ||
571 | arg_join_controllers[0] = l; | |
572 | arg_join_controllers[1] = NULL; | |
573 | ||
574 | n = 1; | |
575 | } else { | |
576 | char ***a; | |
577 | char ***t; | |
578 | ||
579 | t = new0(char**, n+2); | |
580 | if (!t) { | |
581 | strv_free(l); | |
14212119 | 582 | return log_oom(); |
0c85a4f3 LP |
583 | } |
584 | ||
585 | n = 0; | |
586 | ||
587 | for (a = arg_join_controllers; *a; a++) { | |
588 | ||
589 | if (strv_overlap(*a, l)) { | |
590 | char **c; | |
591 | ||
592 | c = strv_merge(*a, l); | |
593 | if (!c) { | |
594 | strv_free(l); | |
595 | strv_free_free(t); | |
14212119 | 596 | return log_oom(); |
0c85a4f3 LP |
597 | } |
598 | ||
599 | strv_free(l); | |
600 | l = c; | |
601 | } else { | |
602 | char **c; | |
603 | ||
604 | c = strv_copy(*a); | |
605 | if (!c) { | |
606 | strv_free(l); | |
607 | strv_free_free(t); | |
14212119 | 608 | return log_oom(); |
0c85a4f3 LP |
609 | } |
610 | ||
611 | t[n++] = c; | |
612 | } | |
613 | } | |
614 | ||
615 | t[n++] = strv_uniq(l); | |
616 | ||
617 | strv_free_free(arg_join_controllers); | |
618 | arg_join_controllers = t; | |
619 | } | |
620 | } | |
621 | ||
622 | return 0; | |
623 | } | |
624 | ||
487393e9 LP |
625 | static int parse_config_file(void) { |
626 | ||
f975e971 LP |
627 | const ConfigTableItem items[] = { |
628 | { "Manager", "LogLevel", config_parse_level2, 0, NULL }, | |
629 | { "Manager", "LogTarget", config_parse_target, 0, NULL }, | |
630 | { "Manager", "LogColor", config_parse_color, 0, NULL }, | |
631 | { "Manager", "LogLocation", config_parse_location, 0, NULL }, | |
632 | { "Manager", "DumpCore", config_parse_bool, 0, &arg_dump_core }, | |
633 | { "Manager", "CrashShell", config_parse_bool, 0, &arg_crash_shell }, | |
634 | { "Manager", "ShowStatus", config_parse_bool, 0, &arg_show_status }, | |
f975e971 LP |
635 | { "Manager", "CrashChVT", config_parse_int, 0, &arg_crash_chvt }, |
636 | { "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, NULL }, | |
f975e971 LP |
637 | { "Manager", "DefaultStandardOutput", config_parse_output, 0, &arg_default_std_output }, |
638 | { "Manager", "DefaultStandardError", config_parse_output, 0, &arg_default_std_error }, | |
0c85a4f3 | 639 | { "Manager", "JoinControllers", config_parse_join_controllers, 0, &arg_join_controllers }, |
7f602784 LP |
640 | { "Manager", "RuntimeWatchdogSec", config_parse_sec, 0, &arg_runtime_watchdog }, |
641 | { "Manager", "ShutdownWatchdogSec", config_parse_sec, 0, &arg_shutdown_watchdog }, | |
ec8927ca | 642 | { "Manager", "CapabilityBoundingSet", config_parse_bounding_set, 0, &arg_capability_bounding_set_drop }, |
aa0f64ac | 643 | { "Manager", "TimerSlackNSec", config_parse_nsec, 0, &arg_timer_slack_nsec }, |
97d0e5f8 | 644 | { "Manager", "DefaultEnvironment", config_parse_environ, 0, &arg_default_environment }, |
c93ff2e9 FC |
645 | { "Manager", "DefaultLimitCPU", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_CPU]}, |
646 | { "Manager", "DefaultLimitFSIZE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_FSIZE]}, | |
647 | { "Manager", "DefaultLimitDATA", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_DATA]}, | |
648 | { "Manager", "DefaultLimitSTACK", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_STACK]}, | |
649 | { "Manager", "DefaultLimitCORE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_CORE]}, | |
650 | { "Manager", "DefaultLimitRSS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RSS]}, | |
651 | { "Manager", "DefaultLimitNOFILE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NOFILE]}, | |
652 | { "Manager", "DefaultLimitAS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_AS]}, | |
653 | { "Manager", "DefaultLimitNPROC", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NPROC]}, | |
654 | { "Manager", "DefaultLimitMEMLOCK", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_MEMLOCK]}, | |
655 | { "Manager", "DefaultLimitLOCKS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_LOCKS]}, | |
656 | { "Manager", "DefaultLimitSIGPENDING",config_parse_limit, 0, &arg_default_rlimit[RLIMIT_SIGPENDING]}, | |
657 | { "Manager", "DefaultLimitMSGQUEUE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_MSGQUEUE]}, | |
658 | { "Manager", "DefaultLimitNICE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NICE]}, | |
659 | { "Manager", "DefaultLimitRTPRIO", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RTPRIO]}, | |
660 | { "Manager", "DefaultLimitRTTIME", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RTTIME]}, | |
f975e971 | 661 | { NULL, NULL, NULL, 0, NULL } |
487393e9 LP |
662 | }; |
663 | ||
7fd1b19b | 664 | _cleanup_fclose_ FILE *f; |
487393e9 LP |
665 | const char *fn; |
666 | int r; | |
667 | ||
19adb8a3 | 668 | fn = arg_running_as == SYSTEMD_SYSTEM ? PKGSYSCONFDIR "/system.conf" : PKGSYSCONFDIR "/user.conf"; |
f975e971 LP |
669 | f = fopen(fn, "re"); |
670 | if (!f) { | |
487393e9 LP |
671 | if (errno == ENOENT) |
672 | return 0; | |
673 | ||
674 | log_warning("Failed to open configuration file '%s': %m", fn); | |
675 | return 0; | |
676 | } | |
677 | ||
db5c0122 | 678 | r = config_parse(NULL, fn, f, "Manager\0", config_item_table_lookup, (void*) items, false, false, NULL); |
f975e971 | 679 | if (r < 0) |
487393e9 LP |
680 | log_warning("Failed to parse configuration file: %s", strerror(-r)); |
681 | ||
487393e9 LP |
682 | return 0; |
683 | } | |
684 | ||
f170852a | 685 | static int parse_proc_cmdline(void) { |
7fd1b19b | 686 | _cleanup_free_ char *line = NULL; |
543295ad | 687 | char *w, *state; |
f170852a | 688 | int r; |
f170852a | 689 | size_t l; |
f170852a | 690 | |
b770165a LP |
691 | /* Don't read /proc/cmdline if we are in a container, since |
692 | * that is only relevant for the host system */ | |
693 | if (detect_container(NULL) > 0) | |
694 | return 0; | |
695 | ||
543295ad ZJS |
696 | r = read_one_line_file("/proc/cmdline", &line); |
697 | if (r < 0) { | |
e364ad06 | 698 | log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r)); |
f170852a LP |
699 | return 0; |
700 | } | |
701 | ||
702 | FOREACH_WORD_QUOTED(w, l, line, state) { | |
7fd1b19b | 703 | _cleanup_free_ char *word; |
f170852a | 704 | |
543295ad ZJS |
705 | word = strndup(w, l); |
706 | if (!word) | |
707 | return log_oom(); | |
f170852a LP |
708 | |
709 | r = parse_proc_cmdline_word(word); | |
14212119 SL |
710 | if (r < 0) { |
711 | log_error("Failed on cmdline argument %s: %s", word, strerror(-r)); | |
543295ad | 712 | return r; |
14212119 | 713 | } |
f170852a LP |
714 | } |
715 | ||
543295ad | 716 | return 0; |
f170852a LP |
717 | } |
718 | ||
719 | static int parse_argv(int argc, char *argv[]) { | |
720 | ||
721 | enum { | |
722 | ARG_LOG_LEVEL = 0x100, | |
723 | ARG_LOG_TARGET, | |
bbe63281 LP |
724 | ARG_LOG_COLOR, |
725 | ARG_LOG_LOCATION, | |
2f198e2f | 726 | ARG_UNIT, |
edb9aaa8 | 727 | ARG_SYSTEM, |
af2d49f7 | 728 | ARG_USER, |
e537352b | 729 | ARG_TEST, |
9ba0bc4e | 730 | ARG_VERSION, |
80876c20 | 731 | ARG_DUMP_CONFIGURATION_ITEMS, |
9e58ff9c LP |
732 | ARG_DUMP_CORE, |
733 | ARG_CRASH_SHELL, | |
a16e1123 | 734 | ARG_CONFIRM_SPAWN, |
9e58ff9c | 735 | ARG_SHOW_STATUS, |
4288f619 | 736 | ARG_DESERIALIZE, |
2660882b | 737 | ARG_SWITCHED_ROOT, |
0a494f1f LP |
738 | ARG_DEFAULT_STD_OUTPUT, |
739 | ARG_DEFAULT_STD_ERROR | |
f170852a LP |
740 | }; |
741 | ||
742 | static const struct option options[] = { | |
a16e1123 LP |
743 | { "log-level", required_argument, NULL, ARG_LOG_LEVEL }, |
744 | { "log-target", required_argument, NULL, ARG_LOG_TARGET }, | |
bbe63281 LP |
745 | { "log-color", optional_argument, NULL, ARG_LOG_COLOR }, |
746 | { "log-location", optional_argument, NULL, ARG_LOG_LOCATION }, | |
2f198e2f | 747 | { "unit", required_argument, NULL, ARG_UNIT }, |
edb9aaa8 | 748 | { "system", no_argument, NULL, ARG_SYSTEM }, |
af2d49f7 | 749 | { "user", no_argument, NULL, ARG_USER }, |
a16e1123 LP |
750 | { "test", no_argument, NULL, ARG_TEST }, |
751 | { "help", no_argument, NULL, 'h' }, | |
9ba0bc4e | 752 | { "version", no_argument, NULL, ARG_VERSION }, |
a16e1123 | 753 | { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS }, |
a5d87bf0 LP |
754 | { "dump-core", optional_argument, NULL, ARG_DUMP_CORE }, |
755 | { "crash-shell", optional_argument, NULL, ARG_CRASH_SHELL }, | |
756 | { "confirm-spawn", optional_argument, NULL, ARG_CONFIRM_SPAWN }, | |
6e98720f | 757 | { "show-status", optional_argument, NULL, ARG_SHOW_STATUS }, |
a16e1123 | 758 | { "deserialize", required_argument, NULL, ARG_DESERIALIZE }, |
2660882b | 759 | { "switched-root", no_argument, NULL, ARG_SWITCHED_ROOT }, |
0a494f1f LP |
760 | { "default-standard-output", required_argument, NULL, ARG_DEFAULT_STD_OUTPUT, }, |
761 | { "default-standard-error", required_argument, NULL, ARG_DEFAULT_STD_ERROR, }, | |
a16e1123 | 762 | { NULL, 0, NULL, 0 } |
f170852a LP |
763 | }; |
764 | ||
765 | int c, r; | |
766 | ||
767 | assert(argc >= 1); | |
768 | assert(argv); | |
769 | ||
b770165a LP |
770 | if (getpid() == 1) |
771 | opterr = 0; | |
772 | ||
099663ff | 773 | while ((c = getopt_long(argc, argv, "hDbsz:", options, NULL)) >= 0) |
f170852a LP |
774 | |
775 | switch (c) { | |
776 | ||
777 | case ARG_LOG_LEVEL: | |
778 | if ((r = log_set_max_level_from_string(optarg)) < 0) { | |
779 | log_error("Failed to parse log level %s.", optarg); | |
780 | return r; | |
781 | } | |
782 | ||
783 | break; | |
784 | ||
785 | case ARG_LOG_TARGET: | |
786 | ||
787 | if ((r = log_set_target_from_string(optarg)) < 0) { | |
788 | log_error("Failed to parse log target %s.", optarg); | |
789 | return r; | |
790 | } | |
791 | ||
792 | break; | |
793 | ||
bbe63281 LP |
794 | case ARG_LOG_COLOR: |
795 | ||
d0b170c8 LP |
796 | if (optarg) { |
797 | if ((r = log_show_color_from_string(optarg)) < 0) { | |
798 | log_error("Failed to parse log color setting %s.", optarg); | |
799 | return r; | |
800 | } | |
801 | } else | |
802 | log_show_color(true); | |
bbe63281 LP |
803 | |
804 | break; | |
805 | ||
806 | case ARG_LOG_LOCATION: | |
807 | ||
d0b170c8 LP |
808 | if (optarg) { |
809 | if ((r = log_show_location_from_string(optarg)) < 0) { | |
810 | log_error("Failed to parse log location setting %s.", optarg); | |
811 | return r; | |
812 | } | |
813 | } else | |
814 | log_show_location(true); | |
bbe63281 LP |
815 | |
816 | break; | |
817 | ||
0a494f1f LP |
818 | case ARG_DEFAULT_STD_OUTPUT: |
819 | ||
820 | if ((r = exec_output_from_string(optarg)) < 0) { | |
821 | log_error("Failed to parse default standard output setting %s.", optarg); | |
822 | return r; | |
823 | } else | |
824 | arg_default_std_output = r; | |
825 | break; | |
826 | ||
827 | case ARG_DEFAULT_STD_ERROR: | |
828 | ||
829 | if ((r = exec_output_from_string(optarg)) < 0) { | |
830 | log_error("Failed to parse default standard error output setting %s.", optarg); | |
831 | return r; | |
832 | } else | |
833 | arg_default_std_error = r; | |
834 | break; | |
835 | ||
2f198e2f | 836 | case ARG_UNIT: |
f170852a LP |
837 | |
838 | if ((r = set_default_unit(optarg)) < 0) { | |
839 | log_error("Failed to set default unit %s: %s", optarg, strerror(-r)); | |
840 | return r; | |
841 | } | |
842 | ||
843 | break; | |
844 | ||
edb9aaa8 | 845 | case ARG_SYSTEM: |
67445f4e | 846 | arg_running_as = SYSTEMD_SYSTEM; |
edb9aaa8 | 847 | break; |
a5dab5ce | 848 | |
af2d49f7 | 849 | case ARG_USER: |
67445f4e | 850 | arg_running_as = SYSTEMD_USER; |
a5dab5ce | 851 | break; |
a5dab5ce | 852 | |
e965d56d | 853 | case ARG_TEST: |
fa0f4d8a | 854 | arg_action = ACTION_TEST; |
e965d56d LP |
855 | break; |
856 | ||
9ba0bc4e ZJS |
857 | case ARG_VERSION: |
858 | arg_action = ACTION_VERSION; | |
859 | break; | |
860 | ||
e537352b | 861 | case ARG_DUMP_CONFIGURATION_ITEMS: |
fa0f4d8a | 862 | arg_action = ACTION_DUMP_CONFIGURATION_ITEMS; |
e537352b LP |
863 | break; |
864 | ||
9e58ff9c | 865 | case ARG_DUMP_CORE: |
a5d87bf0 LP |
866 | r = optarg ? parse_boolean(optarg) : 1; |
867 | if (r < 0) { | |
868 | log_error("Failed to parse dump core boolean %s.", optarg); | |
869 | return r; | |
870 | } | |
871 | arg_dump_core = r; | |
9e58ff9c LP |
872 | break; |
873 | ||
874 | case ARG_CRASH_SHELL: | |
a5d87bf0 LP |
875 | r = optarg ? parse_boolean(optarg) : 1; |
876 | if (r < 0) { | |
877 | log_error("Failed to parse crash shell boolean %s.", optarg); | |
878 | return r; | |
879 | } | |
880 | arg_crash_shell = r; | |
9e58ff9c LP |
881 | break; |
882 | ||
80876c20 | 883 | case ARG_CONFIRM_SPAWN: |
a5d87bf0 LP |
884 | r = optarg ? parse_boolean(optarg) : 1; |
885 | if (r < 0) { | |
886 | log_error("Failed to parse confirm spawn boolean %s.", optarg); | |
887 | return r; | |
888 | } | |
889 | arg_confirm_spawn = r; | |
80876c20 LP |
890 | break; |
891 | ||
9e58ff9c | 892 | case ARG_SHOW_STATUS: |
a5d87bf0 LP |
893 | r = optarg ? parse_boolean(optarg) : 1; |
894 | if (r < 0) { | |
895 | log_error("Failed to parse show status boolean %s.", optarg); | |
896 | return r; | |
897 | } | |
898 | arg_show_status = r; | |
6e98720f | 899 | break; |
a5d87bf0 | 900 | |
a16e1123 LP |
901 | case ARG_DESERIALIZE: { |
902 | int fd; | |
903 | FILE *f; | |
904 | ||
01e10de3 LP |
905 | r = safe_atoi(optarg, &fd); |
906 | if (r < 0 || fd < 0) { | |
a16e1123 | 907 | log_error("Failed to parse deserialize option %s.", optarg); |
01e10de3 | 908 | return r < 0 ? r : -EINVAL; |
a16e1123 LP |
909 | } |
910 | ||
01e10de3 LP |
911 | fd_cloexec(fd, true); |
912 | ||
913 | f = fdopen(fd, "r"); | |
914 | if (!f) { | |
a16e1123 | 915 | log_error("Failed to open serialization fd: %m"); |
01e10de3 | 916 | return -errno; |
a16e1123 LP |
917 | } |
918 | ||
919 | if (serialization) | |
920 | fclose(serialization); | |
921 | ||
922 | serialization = f; | |
923 | ||
924 | break; | |
925 | } | |
926 | ||
2660882b | 927 | case ARG_SWITCHED_ROOT: |
bf4df7c3 | 928 | arg_switched_root = true; |
d03bc1b8 HH |
929 | break; |
930 | ||
f170852a | 931 | case 'h': |
fa0f4d8a | 932 | arg_action = ACTION_HELP; |
f170852a LP |
933 | break; |
934 | ||
1d2e23ab LP |
935 | case 'D': |
936 | log_set_max_level(LOG_DEBUG); | |
937 | break; | |
938 | ||
099663ff LP |
939 | case 'b': |
940 | case 's': | |
941 | case 'z': | |
942 | /* Just to eat away the sysvinit kernel | |
943 | * cmdline args without getopt() error | |
944 | * messages that we'll parse in | |
945 | * parse_proc_cmdline_word() or ignore. */ | |
f170852a | 946 | |
099663ff | 947 | case '?': |
f170852a | 948 | default: |
099663ff LP |
949 | if (getpid() != 1) { |
950 | log_error("Unknown option code %c", c); | |
951 | return -EINVAL; | |
952 | } | |
953 | ||
954 | break; | |
f170852a LP |
955 | } |
956 | ||
d821e6d6 LP |
957 | if (optind < argc && getpid() != 1) { |
958 | /* Hmm, when we aren't run as init system | |
959 | * let's complain about excess arguments */ | |
960 | ||
961 | log_error("Excess arguments."); | |
962 | return -EINVAL; | |
963 | } | |
964 | ||
965 | if (detect_container(NULL) > 0) { | |
966 | char **a; | |
967 | ||
968 | /* All /proc/cmdline arguments the kernel didn't | |
969 | * understand it passed to us. We're not really | |
970 | * interested in that usually since /proc/cmdline is | |
971 | * more interesting and complete. With one exception: | |
972 | * if we are run in a container /proc/cmdline is not | |
973 | * relevant for the container, hence we rely on argv[] | |
974 | * instead. */ | |
975 | ||
976 | for (a = argv; a < argv + argc; a++) | |
14212119 SL |
977 | if ((r = parse_proc_cmdline_word(*a)) < 0) { |
978 | log_error("Failed on cmdline argument %s: %s", *a, strerror(-r)); | |
d821e6d6 | 979 | return r; |
14212119 | 980 | } |
51f0e189 LP |
981 | } |
982 | ||
f170852a LP |
983 | return 0; |
984 | } | |
985 | ||
986 | static int help(void) { | |
987 | ||
2e33c433 | 988 | printf("%s [OPTIONS...]\n\n" |
af2d49f7 | 989 | "Starts up and maintains the system or user services.\n\n" |
e537352b | 990 | " -h --help Show this help\n" |
e537352b | 991 | " --test Determine startup sequence, dump it and exit\n" |
80876c20 | 992 | " --dump-configuration-items Dump understood unit configuration items\n" |
9e58ff9c | 993 | " --unit=UNIT Set default unit\n" |
edb9aaa8 | 994 | " --system Run a system instance, even if PID != 1\n" |
af2d49f7 | 995 | " --user Run a user instance\n" |
a5d87bf0 LP |
996 | " --dump-core[=0|1] Dump core on crash\n" |
997 | " --crash-shell[=0|1] Run shell on crash\n" | |
998 | " --confirm-spawn[=0|1] Ask for confirmation when spawning processes\n" | |
6e98720f | 999 | " --show-status[=0|1] Show status updates on the console during bootup\n" |
4cfa2c99 | 1000 | " --log-target=TARGET Set log target (console, journal, syslog, kmsg, journal-or-kmsg, syslog-or-kmsg, null)\n" |
9e58ff9c | 1001 | " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n" |
2218198b | 1002 | " --log-color[=0|1] Highlight important log messages\n" |
0a494f1f LP |
1003 | " --log-location[=0|1] Include code location in log messages\n" |
1004 | " --default-standard-output= Set default standard output for services\n" | |
1005 | " --default-standard-error= Set default standard error output for services\n", | |
5b6319dc | 1006 | program_invocation_short_name); |
f170852a LP |
1007 | |
1008 | return 0; | |
1009 | } | |
1010 | ||
9ba0bc4e ZJS |
1011 | static int version(void) { |
1012 | puts(PACKAGE_STRING); | |
9ba0bc4e ZJS |
1013 | puts(SYSTEMD_FEATURES); |
1014 | ||
1015 | return 0; | |
1016 | } | |
1017 | ||
b3680f49 | 1018 | static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds, bool switching_root) { |
a16e1123 LP |
1019 | FILE *f = NULL; |
1020 | FDSet *fds = NULL; | |
1021 | int r; | |
1022 | ||
1023 | assert(m); | |
1024 | assert(_f); | |
1025 | assert(_fds); | |
1026 | ||
6b78f9b4 LP |
1027 | r = manager_open_serialization(m, &f); |
1028 | if (r < 0) { | |
35b8ca3a | 1029 | log_error("Failed to create serialization file: %s", strerror(-r)); |
a16e1123 LP |
1030 | goto fail; |
1031 | } | |
1032 | ||
71445ae7 LP |
1033 | /* Make sure nothing is really destructed when we shut down */ |
1034 | m->n_reloading ++; | |
1035 | bus_broadcast_reloading(m, true); | |
1036 | ||
6b78f9b4 LP |
1037 | fds = fdset_new(); |
1038 | if (!fds) { | |
a16e1123 LP |
1039 | r = -ENOMEM; |
1040 | log_error("Failed to allocate fd set: %s", strerror(-r)); | |
1041 | goto fail; | |
1042 | } | |
1043 | ||
b3680f49 | 1044 | r = manager_serialize(m, f, fds, switching_root); |
6b78f9b4 | 1045 | if (r < 0) { |
a16e1123 LP |
1046 | log_error("Failed to serialize state: %s", strerror(-r)); |
1047 | goto fail; | |
1048 | } | |
1049 | ||
1050 | if (fseeko(f, 0, SEEK_SET) < 0) { | |
1051 | log_error("Failed to rewind serialization fd: %m"); | |
1052 | goto fail; | |
1053 | } | |
1054 | ||
6b78f9b4 LP |
1055 | r = fd_cloexec(fileno(f), false); |
1056 | if (r < 0) { | |
a16e1123 LP |
1057 | log_error("Failed to disable O_CLOEXEC for serialization: %s", strerror(-r)); |
1058 | goto fail; | |
1059 | } | |
1060 | ||
6b78f9b4 LP |
1061 | r = fdset_cloexec(fds, false); |
1062 | if (r < 0) { | |
a16e1123 LP |
1063 | log_error("Failed to disable O_CLOEXEC for serialization fds: %s", strerror(-r)); |
1064 | goto fail; | |
1065 | } | |
1066 | ||
1067 | *_f = f; | |
1068 | *_fds = fds; | |
1069 | ||
1070 | return 0; | |
1071 | ||
1072 | fail: | |
1073 | fdset_free(fds); | |
1074 | ||
1075 | if (f) | |
1076 | fclose(f); | |
1077 | ||
1078 | return r; | |
1079 | } | |
1080 | ||
4096d6f5 LP |
1081 | static int bump_rlimit_nofile(struct rlimit *saved_rlimit) { |
1082 | struct rlimit nl; | |
1083 | int r; | |
1084 | ||
1085 | assert(saved_rlimit); | |
1086 | ||
1087 | /* Save the original RLIMIT_NOFILE so that we can reset it | |
1088 | * later when transitioning from the initrd to the main | |
1089 | * systemd or suchlike. */ | |
1090 | if (getrlimit(RLIMIT_NOFILE, saved_rlimit) < 0) { | |
1091 | log_error("Reading RLIMIT_NOFILE failed: %m"); | |
1092 | return -errno; | |
1093 | } | |
1094 | ||
1095 | /* Make sure forked processes get the default kernel setting */ | |
1096 | if (!arg_default_rlimit[RLIMIT_NOFILE]) { | |
1097 | struct rlimit *rl; | |
1098 | ||
1099 | rl = newdup(struct rlimit, saved_rlimit, 1); | |
1100 | if (!rl) | |
1101 | return log_oom(); | |
1102 | ||
1103 | arg_default_rlimit[RLIMIT_NOFILE] = rl; | |
1104 | } | |
1105 | ||
1106 | /* Bump up the resource limit for ourselves substantially */ | |
1107 | nl.rlim_cur = nl.rlim_max = 64*1024; | |
1108 | r = setrlimit_closest(RLIMIT_NOFILE, &nl); | |
1109 | if (r < 0) { | |
1110 | log_error("Setting RLIMIT_NOFILE failed: %s", strerror(-r)); | |
1111 | return r; | |
1112 | } | |
1113 | ||
1114 | return 0; | |
1115 | } | |
1116 | ||
6ee5bbf8 LP |
1117 | static void test_mtab(void) { |
1118 | char *p; | |
1119 | ||
80758717 LP |
1120 | /* Check that /etc/mtab is a symlink */ |
1121 | ||
6ee5bbf8 LP |
1122 | if (readlink_malloc("/etc/mtab", &p) >= 0) { |
1123 | bool b; | |
1124 | ||
ed86ebc4 | 1125 | b = streq(p, "/proc/self/mounts") || streq(p, "/proc/mounts"); |
6ee5bbf8 LP |
1126 | free(p); |
1127 | ||
1128 | if (b) | |
1129 | return; | |
1130 | } | |
1131 | ||
80758717 LP |
1132 | log_warning("/etc/mtab is not a symlink or not pointing to /proc/self/mounts. " |
1133 | "This is not supported anymore. " | |
1134 | "Please make sure to replace this file by a symlink to avoid incorrect or misleading mount(8) output."); | |
1135 | } | |
1136 | ||
1137 | static void test_usr(void) { | |
80758717 | 1138 | |
ed1c99fc | 1139 | /* Check that /usr is not a separate fs */ |
80758717 | 1140 | |
871c44a7 LP |
1141 | if (dir_is_empty("/usr") <= 0) |
1142 | return; | |
1143 | ||
2376ce13 | 1144 | log_warning("/usr appears to be on its own filesytem and is not already mounted. This is not a supported setup. " |
871c44a7 LP |
1145 | "Some things will probably break (sometimes even silently) in mysterious ways. " |
1146 | "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information."); | |
1147 | } | |
1148 | ||
1149 | static void test_cgroups(void) { | |
1150 | ||
1151 | if (access("/proc/cgroups", F_OK) >= 0) | |
1152 | return; | |
1153 | ||
1154 | log_warning("CONFIG_CGROUPS was not set when your kernel was compiled. " | |
1155 | "Systems without control groups are not supported. " | |
1156 | "We will now sleep for 10s, and then continue boot-up. " | |
1157 | "Expect breakage and please do not file bugs. " | |
966a5d37 LP |
1158 | "Instead fix your kernel and enable CONFIG_CGROUPS. " |
1159 | "Consult http://0pointer.de/blog/projects/cgroups-vs-cgroups.html for more information."); | |
871c44a7 LP |
1160 | |
1161 | sleep(10); | |
6ee5bbf8 LP |
1162 | } |
1163 | ||
a07fdfa3 LP |
1164 | static int initialize_join_controllers(void) { |
1165 | /* By default, mount "cpu" + "cpuacct" together, and "net_cls" | |
1166 | * + "net_prio". We'd like to add "cpuset" to the mix, but | |
1167 | * "cpuset" does't really work for groups with no initialized | |
1168 | * attributes. */ | |
1169 | ||
1170 | arg_join_controllers = new(char**, 3); | |
1171 | if (!arg_join_controllers) | |
1172 | return -ENOMEM; | |
1173 | ||
1174 | arg_join_controllers[0] = strv_new("cpu", "cpuacct", NULL); | |
a07fdfa3 | 1175 | arg_join_controllers[1] = strv_new("net_cls", "net_prio", NULL); |
a6b26d90 ZJS |
1176 | arg_join_controllers[2] = NULL; |
1177 | ||
1178 | if (!arg_join_controllers[0] || !arg_join_controllers[1]) { | |
1179 | free_join_controllers(); | |
a07fdfa3 | 1180 | return -ENOMEM; |
a6b26d90 | 1181 | } |
a07fdfa3 | 1182 | |
a07fdfa3 LP |
1183 | return 0; |
1184 | } | |
1185 | ||
60918275 LP |
1186 | int main(int argc, char *argv[]) { |
1187 | Manager *m = NULL; | |
22f4096c | 1188 | int r, retval = EXIT_FAILURE; |
9d76d730 LP |
1189 | usec_t before_startup, after_startup; |
1190 | char timespan[FORMAT_TIMESPAN_MAX]; | |
a16e1123 LP |
1191 | FDSet *fds = NULL; |
1192 | bool reexecute = false; | |
b9080b03 | 1193 | const char *shutdown_verb = NULL; |
e9ddabc2 | 1194 | dual_timestamp initrd_timestamp = { 0ULL, 0ULL }; |
c3a170f3 HH |
1195 | dual_timestamp userspace_timestamp = { 0ULL, 0ULL }; |
1196 | dual_timestamp kernel_timestamp = { 0ULL, 0ULL }; | |
5d6b1584 | 1197 | static char systemd[] = "systemd"; |
2660882b | 1198 | bool skip_setup = false; |
0b3325e7 LP |
1199 | int j; |
1200 | bool loaded_policy = false; | |
e96d6be7 | 1201 | bool arm_reboot_watchdog = false; |
bf4df7c3 | 1202 | bool queue_default_job = false; |
41669317 | 1203 | char *switch_root_dir = NULL, *switch_root_init = NULL; |
4096d6f5 | 1204 | static struct rlimit saved_rlimit_nofile = { 0, 0 }; |
27b14a22 | 1205 | |
058dc6f3 | 1206 | #ifdef HAVE_SYSV_COMPAT |
2cb1a60d | 1207 | if (getpid() != 1 && strstr(program_invocation_short_name, "init")) { |
35b8ca3a | 1208 | /* This is compatibility support for SysV, where |
2cb1a60d LP |
1209 | * calling init as a user is identical to telinit. */ |
1210 | ||
1211 | errno = -ENOENT; | |
1212 | execv(SYSTEMCTL_BINARY_PATH, argv); | |
1213 | log_error("Failed to exec " SYSTEMCTL_BINARY_PATH ": %m"); | |
1214 | return 1; | |
1215 | } | |
058dc6f3 | 1216 | #endif |
2cb1a60d | 1217 | |
c3a170f3 HH |
1218 | dual_timestamp_from_monotonic(&kernel_timestamp, 0); |
1219 | dual_timestamp_get(&userspace_timestamp); | |
1220 | ||
0b3325e7 LP |
1221 | /* Determine if this is a reexecution or normal bootup. We do |
1222 | * the full command line parsing much later, so let's just | |
1223 | * have a quick peek here. */ | |
db813c2a LP |
1224 | if (strv_find(argv+1, "--deserialize")) |
1225 | skip_setup = true; | |
0b3325e7 | 1226 | |
2660882b LP |
1227 | /* If we have switched root, do all the special setup |
1228 | * things */ | |
db813c2a LP |
1229 | if (strv_find(argv+1, "--switched-root")) |
1230 | skip_setup = false; | |
d03bc1b8 | 1231 | |
f3b6a3ed LP |
1232 | /* If we get started via the /sbin/init symlink then we are |
1233 | called 'init'. After a subsequent reexecution we are then | |
1234 | called 'systemd'. That is confusing, hence let's call us | |
1235 | systemd right-away. */ | |
f3b6a3ed LP |
1236 | program_invocation_short_name = systemd; |
1237 | prctl(PR_SET_NAME, systemd); | |
5d6b1584 | 1238 | |
9a0e6896 LP |
1239 | saved_argv = argv; |
1240 | saved_argc = argc; | |
f3b6a3ed | 1241 | |
2cc59dbf | 1242 | log_show_color(isatty(STDERR_FILENO) > 0); |
bbe63281 | 1243 | |
90dc8c2e MG |
1244 | /* Disable the umask logic */ |
1245 | if (getpid() == 1) | |
1246 | umask(0); | |
1247 | ||
a866073d | 1248 | if (getpid() == 1 && detect_container(NULL) <= 0) { |
4f8d551f | 1249 | |
a866073d | 1250 | /* Running outside of a container as PID 1 */ |
67445f4e | 1251 | arg_running_as = SYSTEMD_SYSTEM; |
a866073d LP |
1252 | make_null_stdio(); |
1253 | log_set_target(LOG_TARGET_KMSG); | |
1254 | log_open(); | |
1255 | ||
21bf2ab0 | 1256 | if (in_initrd()) |
c3a170f3 | 1257 | initrd_timestamp = userspace_timestamp; |
c3ba6250 | 1258 | |
2660882b | 1259 | if (!skip_setup) { |
8f838d8a | 1260 | mount_setup_early(); |
0b3325e7 LP |
1261 | if (selinux_setup(&loaded_policy) < 0) |
1262 | goto finish; | |
81611586 RS |
1263 | if (ima_setup() < 0) |
1264 | goto finish; | |
ffbd2c4d NC |
1265 | if (smack_setup() < 0) |
1266 | goto finish; | |
81611586 | 1267 | } |
0b3325e7 | 1268 | |
e9a5ef7c | 1269 | if (label_init(NULL) < 0) |
0ff4cdd9 | 1270 | goto finish; |
7948c4df | 1271 | |
72edcff5 | 1272 | if (!skip_setup) { |
0b3325e7 LP |
1273 | if (hwclock_is_localtime() > 0) { |
1274 | int min; | |
7948c4df | 1275 | |
72edcff5 KS |
1276 | /* The first-time call to settimeofday() does a time warp in the kernel */ |
1277 | r = hwclock_set_timezone(&min); | |
0b3325e7 LP |
1278 | if (r < 0) |
1279 | log_error("Failed to apply local time delta, ignoring: %s", strerror(-r)); | |
1280 | else | |
1281 | log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min); | |
19e65613 KS |
1282 | } else if (!in_initrd()) { |
1283 | /* | |
1284 | * Do dummy first-time call to seal the kernel's time warp magic | |
1285 | * | |
1286 | * Do not call this this from inside the initrd. The initrd might not | |
1287 | * carry /etc/adjtime with LOCAL, but the real system could be set up | |
1288 | * that way. In such case, we need to delay the time-warp or the sealing | |
1289 | * until we reach the real system. | |
1290 | */ | |
72edcff5 | 1291 | hwclock_reset_timezone(); |
871e5809 | 1292 | |
e9dd9f95 | 1293 | /* Tell the kernel our timezone */ |
72edcff5 KS |
1294 | r = hwclock_set_timezone(NULL); |
1295 | if (r < 0) | |
e9dd9f95 | 1296 | log_error("Failed to set the kernel's timezone, ignoring: %s", strerror(-r)); |
72edcff5 KS |
1297 | } |
1298 | } | |
a866073d LP |
1299 | |
1300 | /* Set the default for later on, but don't actually | |
1301 | * open the logs like this for now. Note that if we | |
1302 | * are transitioning from the initrd there might still | |
1303 | * be journal fd open, and we shouldn't attempt | |
1304 | * opening that before we parsed /proc/cmdline which | |
1305 | * might redirect output elsewhere. */ | |
1306 | log_set_target(LOG_TARGET_JOURNAL_OR_KMSG); | |
1307 | ||
1308 | } else if (getpid() == 1) { | |
a866073d | 1309 | /* Running inside a container, as PID 1 */ |
67445f4e | 1310 | arg_running_as = SYSTEMD_SYSTEM; |
a866073d LP |
1311 | log_set_target(LOG_TARGET_CONSOLE); |
1312 | log_open(); | |
1313 | ||
1314 | /* For the later on, see above... */ | |
1315 | log_set_target(LOG_TARGET_JOURNAL); | |
1316 | ||
c3a170f3 HH |
1317 | /* clear the kernel timestamp, |
1318 | * because we are in a container */ | |
1319 | kernel_timestamp.monotonic = 0ULL; | |
1320 | kernel_timestamp.realtime = 0ULL; | |
a866073d | 1321 | |
c3a170f3 | 1322 | } else { |
a866073d | 1323 | /* Running as user instance */ |
67445f4e | 1324 | arg_running_as = SYSTEMD_USER; |
eeecf6e6 | 1325 | log_set_target(LOG_TARGET_AUTO); |
871e5809 | 1326 | log_open(); |
c3a170f3 HH |
1327 | |
1328 | /* clear the kernel timestamp, | |
1329 | * because we are not PID 1 */ | |
1330 | kernel_timestamp.monotonic = 0ULL; | |
1331 | kernel_timestamp.realtime = 0ULL; | |
bbe63281 | 1332 | } |
a5dab5ce | 1333 | |
0c85a4f3 | 1334 | /* Initialize default unit */ |
6afa301b LP |
1335 | r = set_default_unit(SPECIAL_DEFAULT_TARGET); |
1336 | if (r < 0) { | |
14212119 | 1337 | log_error("Failed to set default unit %s: %s", SPECIAL_DEFAULT_TARGET, strerror(-r)); |
f170852a | 1338 | goto finish; |
14212119 | 1339 | } |
60918275 | 1340 | |
a07fdfa3 LP |
1341 | r = initialize_join_controllers(); |
1342 | if (r < 0) | |
0c85a4f3 LP |
1343 | goto finish; |
1344 | ||
f170852a LP |
1345 | /* Mount /proc, /sys and friends, so that /proc/cmdline and |
1346 | * /proc/$PID/fd is available. */ | |
c1dae1b3 | 1347 | if (getpid() == 1) { |
0c85a4f3 LP |
1348 | r = mount_setup(loaded_policy); |
1349 | if (r < 0) | |
8efe3c01 | 1350 | goto finish; |
0c85a4f3 | 1351 | } |
4ade7963 LP |
1352 | |
1353 | /* Reset all signal handlers. */ | |
1354 | assert_se(reset_all_signal_handlers() == 0); | |
1355 | ||
9a34ec5f | 1356 | ignore_signals(SIGNALS_IGNORE, -1); |
078e4539 | 1357 | |
487393e9 LP |
1358 | if (parse_config_file() < 0) |
1359 | goto finish; | |
1360 | ||
67445f4e | 1361 | if (arg_running_as == SYSTEMD_SYSTEM) |
a5dab5ce LP |
1362 | if (parse_proc_cmdline() < 0) |
1363 | goto finish; | |
f170852a LP |
1364 | |
1365 | log_parse_environment(); | |
1366 | ||
1367 | if (parse_argv(argc, argv) < 0) | |
1368 | goto finish; | |
1369 | ||
6bae23a0 TB |
1370 | if (arg_action == ACTION_TEST && |
1371 | geteuid() == 0) { | |
b5c6cf87 LP |
1372 | log_error("Don't run test mode as root."); |
1373 | goto finish; | |
1374 | } | |
1375 | ||
6bae23a0 TB |
1376 | if (arg_running_as == SYSTEMD_USER && |
1377 | arg_action == ACTION_RUN && | |
1378 | sd_booted() <= 0) { | |
1379 | log_error("Trying to run as user instance, but the system has not been booted with systemd."); | |
1380 | goto finish; | |
1381 | } | |
1382 | ||
67445f4e | 1383 | if (arg_running_as == SYSTEMD_SYSTEM && |
fe783b03 LP |
1384 | arg_action == ACTION_RUN && |
1385 | running_in_chroot() > 0) { | |
1386 | log_error("Cannot be run in a chroot() environment."); | |
1387 | goto finish; | |
1388 | } | |
1389 | ||
fa0f4d8a | 1390 | if (arg_action == ACTION_HELP) { |
f170852a LP |
1391 | retval = help(); |
1392 | goto finish; | |
9ba0bc4e ZJS |
1393 | } else if (arg_action == ACTION_VERSION) { |
1394 | retval = version(); | |
1395 | goto finish; | |
fa0f4d8a | 1396 | } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) { |
e537352b | 1397 | unit_dump_config_items(stdout); |
22f4096c | 1398 | retval = EXIT_SUCCESS; |
e537352b | 1399 | goto finish; |
fa0f4d8a | 1400 | } else if (arg_action == ACTION_DONE) { |
22f4096c | 1401 | retval = EXIT_SUCCESS; |
4288f619 | 1402 | goto finish; |
f170852a LP |
1403 | } |
1404 | ||
fa0f4d8a | 1405 | assert_se(arg_action == ACTION_RUN || arg_action == ACTION_TEST); |
f170852a | 1406 | |
871e5809 LP |
1407 | /* Close logging fds, in order not to confuse fdset below */ |
1408 | log_close(); | |
1409 | ||
a16e1123 | 1410 | /* Remember open file descriptors for later deserialization */ |
01e10de3 LP |
1411 | r = fdset_new_fill(&fds); |
1412 | if (r < 0) { | |
1413 | log_error("Failed to allocate fd set: %s", strerror(-r)); | |
1414 | goto finish; | |
1415 | } else | |
1416 | fdset_cloexec(fds, true); | |
a16e1123 | 1417 | |
01e10de3 | 1418 | if (serialization) |
a16e1123 | 1419 | assert_se(fdset_remove(fds, fileno(serialization)) >= 0); |
a16e1123 | 1420 | |
90dc8c2e | 1421 | if (arg_running_as == SYSTEMD_SYSTEM) |
80876c20 LP |
1422 | /* Become a session leader if we aren't one yet. */ |
1423 | setsid(); | |
4ade7963 | 1424 | |
befb5b6a LP |
1425 | /* Move out of the way, so that we won't block unmounts */ |
1426 | assert_se(chdir("/") == 0); | |
1427 | ||
843d2643 LP |
1428 | /* Make sure D-Bus doesn't fiddle with the SIGPIPE handlers */ |
1429 | dbus_connection_set_change_sigpipe(FALSE); | |
1430 | ||
2146621b LP |
1431 | /* Reset the console, but only if this is really init and we |
1432 | * are freshly booted */ | |
67445f4e | 1433 | if (arg_running_as == SYSTEMD_SYSTEM && arg_action == ACTION_RUN) |
2660882b | 1434 | console_setup(getpid() == 1 && !skip_setup); |
4ade7963 | 1435 | |
18149b9f | 1436 | /* Open the logging devices, if possible and necessary */ |
843d2643 | 1437 | log_open(); |
4ade7963 | 1438 | |
5373d602 LP |
1439 | /* Make sure we leave a core dump without panicing the |
1440 | * kernel. */ | |
ab422445 | 1441 | if (getpid() == 1) { |
4fc935ca | 1442 | install_crash_handler(); |
97c4f35c | 1443 | |
0c85a4f3 LP |
1444 | r = mount_cgroup_controllers(arg_join_controllers); |
1445 | if (r < 0) | |
1446 | goto finish; | |
1447 | } | |
1448 | ||
67445f4e | 1449 | if (arg_running_as == SYSTEMD_SYSTEM) { |
c20f5ac7 LP |
1450 | const char *virtualization = NULL; |
1451 | ||
bc270841 | 1452 | log_info(PACKAGE_STRING " running in system mode. (" SYSTEMD_FEATURES ")"); |
c20f5ac7 LP |
1453 | |
1454 | detect_virtualization(&virtualization); | |
1455 | if (virtualization) | |
1456 | log_info("Detected virtualization '%s'.", virtualization); | |
1457 | ||
26a1efdf LP |
1458 | if (in_initrd()) |
1459 | log_info("Running in initial RAM disk."); | |
1460 | ||
c20f5ac7 | 1461 | } else |
bc270841 | 1462 | log_debug(PACKAGE_STRING " running in user mode. (" SYSTEMD_FEATURES ")"); |
a5dab5ce | 1463 | |
67445f4e | 1464 | if (arg_running_as == SYSTEMD_SYSTEM && !skip_setup) { |
6faa1114 | 1465 | if (arg_show_status || plymouth_running()) |
888c6216 LP |
1466 | status_welcome(); |
1467 | ||
e3043162 | 1468 | #ifdef HAVE_KMOD |
888c6216 | 1469 | kmod_setup(); |
e3043162 | 1470 | #endif |
888c6216 | 1471 | hostname_setup(); |
d7ccca2e | 1472 | machine_id_setup(); |
888c6216 | 1473 | loopback_setup(); |
490aed58 | 1474 | |
6ee5bbf8 | 1475 | test_mtab(); |
80758717 | 1476 | test_usr(); |
871c44a7 | 1477 | test_cgroups(); |
af5bc85d | 1478 | } |
302e8c4c | 1479 | |
67445f4e | 1480 | if (arg_running_as == SYSTEMD_SYSTEM && arg_runtime_watchdog > 0) |
e96d6be7 LP |
1481 | watchdog_set_timeout(&arg_runtime_watchdog); |
1482 | ||
aa0f64ac LP |
1483 | if (arg_timer_slack_nsec != (nsec_t) -1) |
1484 | if (prctl(PR_SET_TIMERSLACK, arg_timer_slack_nsec) < 0) | |
1485 | log_error("Failed to adjust timer slack: %m"); | |
1486 | ||
ec8927ca | 1487 | if (arg_capability_bounding_set_drop) { |
31c885e9 | 1488 | r = capability_bounding_set_drop_usermode(arg_capability_bounding_set_drop); |
ec8927ca | 1489 | if (r < 0) { |
31c885e9 | 1490 | log_error("Failed to drop capability bounding set of usermode helpers: %s", strerror(-r)); |
ec8927ca LP |
1491 | goto finish; |
1492 | } | |
31c885e9 | 1493 | r = capability_bounding_set_drop(arg_capability_bounding_set_drop, true); |
939b8f14 | 1494 | if (r < 0) { |
31c885e9 | 1495 | log_error("Failed to drop capability bounding set: %s", strerror(-r)); |
939b8f14 LP |
1496 | goto finish; |
1497 | } | |
ec8927ca LP |
1498 | } |
1499 | ||
67445f4e | 1500 | if (arg_running_as == SYSTEMD_USER) { |
d4447f4d | 1501 | /* Become reaper of our children */ |
8b8ffe68 LP |
1502 | if (prctl(PR_SET_CHILD_SUBREAPER, 1) < 0) { |
1503 | log_warning("Failed to make us a subreaper: %m"); | |
1504 | if (errno == EINVAL) | |
ddfa5101 | 1505 | log_info("Perhaps the kernel version is too old (< 3.4?)"); |
8b8ffe68 | 1506 | } |
d4447f4d AK |
1507 | } |
1508 | ||
67445f4e | 1509 | if (arg_running_as == SYSTEMD_SYSTEM) |
4096d6f5 LP |
1510 | bump_rlimit_nofile(&saved_rlimit_nofile); |
1511 | ||
6fa48533 | 1512 | r = manager_new(arg_running_as, !!serialization, &m); |
e96d6be7 | 1513 | if (r < 0) { |
8e274523 | 1514 | log_error("Failed to allocate manager object: %s", strerror(-r)); |
60918275 LP |
1515 | goto finish; |
1516 | } | |
1517 | ||
9e58ff9c | 1518 | m->confirm_spawn = arg_confirm_spawn; |
0a494f1f LP |
1519 | m->default_std_output = arg_default_std_output; |
1520 | m->default_std_error = arg_default_std_error; | |
e96d6be7 LP |
1521 | m->runtime_watchdog = arg_runtime_watchdog; |
1522 | m->shutdown_watchdog = arg_shutdown_watchdog; | |
c3a170f3 HH |
1523 | m->userspace_timestamp = userspace_timestamp; |
1524 | m->kernel_timestamp = kernel_timestamp; | |
c3a170f3 | 1525 | m->initrd_timestamp = initrd_timestamp; |
9e58ff9c | 1526 | |
c93ff2e9 FC |
1527 | manager_set_default_rlimits(m, arg_default_rlimit); |
1528 | ||
97d0e5f8 | 1529 | if (arg_default_environment) |
e21fea24 | 1530 | manager_environment_add(m, arg_default_environment); |
97d0e5f8 | 1531 | |
27d340c7 LP |
1532 | manager_set_show_status(m, arg_show_status); |
1533 | ||
bf4df7c3 LP |
1534 | /* Remember whether we should queue the default job */ |
1535 | queue_default_job = !serialization || arg_switched_root; | |
1536 | ||
9d76d730 LP |
1537 | before_startup = now(CLOCK_MONOTONIC); |
1538 | ||
e96d6be7 LP |
1539 | r = manager_startup(m, serialization, fds); |
1540 | if (r < 0) | |
6e2ef85b | 1541 | log_error("Failed to fully start up daemon: %s", strerror(-r)); |
a16e1123 | 1542 | |
bf4df7c3 LP |
1543 | /* This will close all file descriptors that were opened, but |
1544 | * not claimed by any unit. */ | |
01e10de3 | 1545 | fdset_free(fds); |
6c081276 | 1546 | fds = NULL; |
f50e0a01 | 1547 | |
a16e1123 LP |
1548 | if (serialization) { |
1549 | fclose(serialization); | |
1550 | serialization = NULL; | |
bf4df7c3 LP |
1551 | } |
1552 | ||
1553 | if (queue_default_job) { | |
398ef8ba | 1554 | DBusError error; |
1c27d3f3 | 1555 | Unit *target = NULL; |
bacbccb7 | 1556 | Job *default_unit_job; |
398ef8ba LP |
1557 | |
1558 | dbus_error_init(&error); | |
1559 | ||
fa0f4d8a | 1560 | log_debug("Activating default unit: %s", arg_default_unit); |
a16e1123 | 1561 | |
e96d6be7 LP |
1562 | r = manager_load_unit(m, arg_default_unit, NULL, &error, &target); |
1563 | if (r < 0) { | |
398ef8ba LP |
1564 | log_error("Failed to load default target: %s", bus_error(&error, r)); |
1565 | dbus_error_free(&error); | |
c2756a68 | 1566 | } else if (target->load_state == UNIT_ERROR || target->load_state == UNIT_NOT_FOUND) |
ac155bb8 MS |
1567 | log_error("Failed to load default target: %s", strerror(-target->load_error)); |
1568 | else if (target->load_state == UNIT_MASKED) | |
6daf4f90 | 1569 | log_error("Default target masked."); |
27b14a22 | 1570 | |
ac155bb8 | 1571 | if (!target || target->load_state != UNIT_LOADED) { |
a16e1123 | 1572 | log_info("Trying to load rescue target..."); |
1c27d3f3 | 1573 | |
e96d6be7 LP |
1574 | r = manager_load_unit(m, SPECIAL_RESCUE_TARGET, NULL, &error, &target); |
1575 | if (r < 0) { | |
398ef8ba LP |
1576 | log_error("Failed to load rescue target: %s", bus_error(&error, r)); |
1577 | dbus_error_free(&error); | |
a16e1123 | 1578 | goto finish; |
11ddb6f4 | 1579 | } else if (target->load_state == UNIT_ERROR || target->load_state == UNIT_NOT_FOUND) { |
ac155bb8 | 1580 | log_error("Failed to load rescue target: %s", strerror(-target->load_error)); |
1c27d3f3 | 1581 | goto finish; |
ac155bb8 | 1582 | } else if (target->load_state == UNIT_MASKED) { |
6daf4f90 | 1583 | log_error("Rescue target masked."); |
00dc5d76 | 1584 | goto finish; |
a16e1123 LP |
1585 | } |
1586 | } | |
37d88da7 | 1587 | |
ac155bb8 | 1588 | assert(target->load_state == UNIT_LOADED); |
00dc5d76 | 1589 | |
fa0f4d8a | 1590 | if (arg_action == ACTION_TEST) { |
40d50879 | 1591 | printf("-> By units:\n"); |
a16e1123 LP |
1592 | manager_dump_units(m, stdout, "\t"); |
1593 | } | |
1594 | ||
95f1b47d | 1595 | r = manager_add_job(m, JOB_START, target, JOB_ISOLATE, false, &error, &default_unit_job); |
ab17a050 | 1596 | if (r == -EPERM) { |
cd8f53ab | 1597 | log_debug("Default target could not be isolated, starting instead: %s", bus_error(&error, r)); |
ab17a050 LP |
1598 | dbus_error_free(&error); |
1599 | ||
1600 | r = manager_add_job(m, JOB_START, target, JOB_REPLACE, false, &error, &default_unit_job); | |
1601 | if (r < 0) { | |
1602 | log_error("Failed to start default target: %s", bus_error(&error, r)); | |
1603 | dbus_error_free(&error); | |
1604 | goto finish; | |
1605 | } | |
1606 | } else if (r < 0) { | |
1607 | log_error("Failed to isolate default target: %s", bus_error(&error, r)); | |
398ef8ba | 1608 | dbus_error_free(&error); |
37d88da7 LP |
1609 | goto finish; |
1610 | } | |
ab17a050 | 1611 | |
bacbccb7 | 1612 | m->default_unit_job_id = default_unit_job->id; |
60918275 | 1613 | |
07672f49 LP |
1614 | after_startup = now(CLOCK_MONOTONIC); |
1615 | log_full(arg_action == ACTION_TEST ? LOG_INFO : LOG_DEBUG, | |
1616 | "Loaded units and determined initial transaction in %s.", | |
2fa4092c | 1617 | format_timespan(timespan, sizeof(timespan), after_startup - before_startup, 0)); |
07672f49 | 1618 | |
fa0f4d8a | 1619 | if (arg_action == ACTION_TEST) { |
40d50879 | 1620 | printf("-> By jobs:\n"); |
a16e1123 | 1621 | manager_dump_jobs(m, stdout, "\t"); |
22f4096c | 1622 | retval = EXIT_SUCCESS; |
a16e1123 LP |
1623 | goto finish; |
1624 | } | |
e965d56d | 1625 | } |
d46de8a1 | 1626 | |
a16e1123 | 1627 | for (;;) { |
e96d6be7 LP |
1628 | r = manager_loop(m); |
1629 | if (r < 0) { | |
a16e1123 LP |
1630 | log_error("Failed to run mainloop: %s", strerror(-r)); |
1631 | goto finish; | |
1632 | } | |
11dd41ce | 1633 | |
a16e1123 | 1634 | switch (m->exit_code) { |
e965d56d | 1635 | |
a16e1123 | 1636 | case MANAGER_EXIT: |
22f4096c | 1637 | retval = EXIT_SUCCESS; |
a16e1123 LP |
1638 | log_debug("Exit."); |
1639 | goto finish; | |
e965d56d | 1640 | |
a16e1123 | 1641 | case MANAGER_RELOAD: |
e015090f | 1642 | log_info("Reloading."); |
e96d6be7 LP |
1643 | r = manager_reload(m); |
1644 | if (r < 0) | |
a16e1123 LP |
1645 | log_error("Failed to reload: %s", strerror(-r)); |
1646 | break; | |
cea8e32e | 1647 | |
a16e1123 | 1648 | case MANAGER_REEXECUTE: |
664f88a7 | 1649 | |
b3680f49 | 1650 | if (prepare_reexecute(m, &serialization, &fds, false) < 0) |
a16e1123 | 1651 | goto finish; |
60918275 | 1652 | |
a16e1123 | 1653 | reexecute = true; |
e015090f | 1654 | log_notice("Reexecuting."); |
a16e1123 LP |
1655 | goto finish; |
1656 | ||
664f88a7 LP |
1657 | case MANAGER_SWITCH_ROOT: |
1658 | /* Steal the switch root parameters */ | |
41669317 | 1659 | switch_root_dir = m->switch_root; |
664f88a7 LP |
1660 | switch_root_init = m->switch_root_init; |
1661 | m->switch_root = m->switch_root_init = NULL; | |
1662 | ||
1663 | if (!switch_root_init) | |
b3680f49 | 1664 | if (prepare_reexecute(m, &serialization, &fds, true) < 0) |
664f88a7 LP |
1665 | goto finish; |
1666 | ||
1667 | reexecute = true; | |
1668 | log_notice("Switching root."); | |
1669 | goto finish; | |
1670 | ||
b9080b03 FF |
1671 | case MANAGER_REBOOT: |
1672 | case MANAGER_POWEROFF: | |
1673 | case MANAGER_HALT: | |
1674 | case MANAGER_KEXEC: { | |
1675 | static const char * const table[_MANAGER_EXIT_CODE_MAX] = { | |
1676 | [MANAGER_REBOOT] = "reboot", | |
1677 | [MANAGER_POWEROFF] = "poweroff", | |
1678 | [MANAGER_HALT] = "halt", | |
1679 | [MANAGER_KEXEC] = "kexec" | |
1680 | }; | |
1681 | ||
1682 | assert_se(shutdown_verb = table[m->exit_code]); | |
e96d6be7 | 1683 | arm_reboot_watchdog = m->exit_code == MANAGER_REBOOT; |
b9080b03 FF |
1684 | |
1685 | log_notice("Shutting down."); | |
1686 | goto finish; | |
1687 | } | |
1688 | ||
a16e1123 LP |
1689 | default: |
1690 | assert_not_reached("Unknown exit code."); | |
1691 | } | |
1692 | } | |
f170852a | 1693 | |
60918275 LP |
1694 | finish: |
1695 | if (m) | |
1696 | manager_free(m); | |
1697 | ||
c93ff2e9 | 1698 | for (j = 0; j < RLIMIT_NLIMITS; j++) |
4096d6f5 | 1699 | free(arg_default_rlimit[j]); |
c93ff2e9 | 1700 | |
fa0f4d8a | 1701 | free(arg_default_unit); |
0c85a4f3 | 1702 | free_join_controllers(); |
b9cd2ec1 | 1703 | |
ea430986 | 1704 | dbus_shutdown(); |
b2bb3dbe LP |
1705 | label_finish(); |
1706 | ||
a16e1123 | 1707 | if (reexecute) { |
664f88a7 | 1708 | const char **args; |
e564a982 | 1709 | unsigned i, args_size; |
a16e1123 | 1710 | |
664f88a7 LP |
1711 | /* Close and disarm the watchdog, so that the new |
1712 | * instance can reinitialize it, but doesn't get | |
1713 | * rebooted while we do that */ | |
1714 | watchdog_close(true); | |
a16e1123 | 1715 | |
4096d6f5 LP |
1716 | /* Reset the RLIMIT_NOFILE to the kernel default, so |
1717 | * that the new systemd can pass the kernel default to | |
1718 | * its child processes */ | |
1719 | if (saved_rlimit_nofile.rlim_cur > 0) | |
1720 | setrlimit(RLIMIT_NOFILE, &saved_rlimit_nofile); | |
1721 | ||
41669317 | 1722 | if (switch_root_dir) { |
cee530bb LP |
1723 | /* Kill all remaining processes from the |
1724 | * initrd, but don't wait for them, so that we | |
1725 | * can handle the SIGCHLD for them after | |
1726 | * deserializing. */ | |
1727 | broadcast_signal(SIGTERM, false); | |
bd3fa1d2 LP |
1728 | |
1729 | /* And switch root */ | |
41669317 LP |
1730 | r = switch_root(switch_root_dir); |
1731 | if (r < 0) | |
1732 | log_error("Failed to switch root, ignoring: %s", strerror(-r)); | |
1733 | } | |
a16e1123 | 1734 | |
d03bc1b8 | 1735 | args_size = MAX(6, argc+1); |
e564a982 | 1736 | args = newa(const char*, args_size); |
a16e1123 | 1737 | |
664f88a7 LP |
1738 | if (!switch_root_init) { |
1739 | char sfd[16]; | |
a16e1123 | 1740 | |
664f88a7 LP |
1741 | /* First try to spawn ourselves with the right |
1742 | * path, and with full serialization. We do | |
1743 | * this only if the user didn't specify an | |
1744 | * explicit init to spawn. */ | |
edb9aaa8 | 1745 | |
664f88a7 LP |
1746 | assert(serialization); |
1747 | assert(fds); | |
edb9aaa8 | 1748 | |
664f88a7 LP |
1749 | snprintf(sfd, sizeof(sfd), "%i", fileno(serialization)); |
1750 | char_array_0(sfd); | |
edb9aaa8 | 1751 | |
664f88a7 LP |
1752 | i = 0; |
1753 | args[i++] = SYSTEMD_BINARY_PATH; | |
41669317 | 1754 | if (switch_root_dir) |
2660882b | 1755 | args[i++] = "--switched-root"; |
67445f4e | 1756 | args[i++] = arg_running_as == SYSTEMD_SYSTEM ? "--system" : "--user"; |
664f88a7 LP |
1757 | args[i++] = "--deserialize"; |
1758 | args[i++] = sfd; | |
1759 | args[i++] = NULL; | |
edb9aaa8 | 1760 | |
ce8aba56 KS |
1761 | /* do not pass along the environment we inherit from the kernel or initrd */ |
1762 | if (switch_root_dir) | |
1763 | clearenv(); | |
1764 | ||
e564a982 | 1765 | assert(i <= args_size); |
664f88a7 LP |
1766 | execv(args[0], (char* const*) args); |
1767 | } | |
6e98720f | 1768 | |
664f88a7 LP |
1769 | /* Try the fallback, if there is any, without any |
1770 | * serialization. We pass the original argv[] and | |
1771 | * envp[]. (Well, modulo the ordering changes due to | |
1772 | * getopt() in argv[], and some cleanups in envp[], | |
1773 | * but let's hope that doesn't matter.) */ | |
a16e1123 | 1774 | |
b8f83232 | 1775 | if (serialization) { |
664f88a7 | 1776 | fclose(serialization); |
b8f83232 LP |
1777 | serialization = NULL; |
1778 | } | |
a16e1123 | 1779 | |
b8f83232 | 1780 | if (fds) { |
664f88a7 | 1781 | fdset_free(fds); |
b8f83232 LP |
1782 | fds = NULL; |
1783 | } | |
a16e1123 | 1784 | |
a504223d HH |
1785 | /* Reopen the console */ |
1786 | make_console_stdio(); | |
1787 | ||
b8f83232 | 1788 | for (j = 1, i = 1; j < argc; j++) |
664f88a7 | 1789 | args[i++] = argv[j]; |
a16e1123 | 1790 | args[i++] = NULL; |
e564a982 | 1791 | assert(i <= args_size); |
b8f83232 LP |
1792 | |
1793 | if (switch_root_init) { | |
1794 | args[0] = switch_root_init; | |
1795 | execv(args[0], (char* const*) args); | |
1796 | log_warning("Failed to execute configured init, trying fallback: %m"); | |
1797 | } | |
1798 | ||
1799 | args[0] = "/sbin/init"; | |
a16e1123 LP |
1800 | execv(args[0], (char* const*) args); |
1801 | ||
745e2fb7 KS |
1802 | if (errno == ENOENT) { |
1803 | log_warning("No /sbin/init, trying fallback"); | |
b8f83232 | 1804 | |
745e2fb7 KS |
1805 | args[0] = "/bin/sh"; |
1806 | args[1] = NULL; | |
1807 | execv(args[0], (char* const*) args); | |
1808 | log_error("Failed to execute /bin/sh, giving up: %m"); | |
1809 | } else | |
1810 | log_warning("Failed to execute /sbin/init, giving up: %m"); | |
a16e1123 LP |
1811 | } |
1812 | ||
1813 | if (serialization) | |
1814 | fclose(serialization); | |
1815 | ||
1816 | if (fds) | |
1817 | fdset_free(fds); | |
1818 | ||
b9080b03 FF |
1819 | if (shutdown_verb) { |
1820 | const char * command_line[] = { | |
1821 | SYSTEMD_SHUTDOWN_BINARY_PATH, | |
1822 | shutdown_verb, | |
1823 | NULL | |
1824 | }; | |
d18f337c | 1825 | char **env_block; |
b9080b03 | 1826 | |
e96d6be7 | 1827 | if (arm_reboot_watchdog && arg_shutdown_watchdog > 0) { |
d18f337c LP |
1828 | char e[32]; |
1829 | ||
e96d6be7 LP |
1830 | /* If we reboot let's set the shutdown |
1831 | * watchdog and tell the shutdown binary to | |
1832 | * repeatedly ping it */ | |
1833 | watchdog_set_timeout(&arg_shutdown_watchdog); | |
1834 | watchdog_close(false); | |
1835 | ||
1836 | /* Tell the binary how often to ping */ | |
1837 | snprintf(e, sizeof(e), "WATCHDOG_USEC=%llu", (unsigned long long) arg_shutdown_watchdog); | |
1838 | char_array_0(e); | |
d18f337c LP |
1839 | |
1840 | env_block = strv_append(environ, e); | |
1841 | } else { | |
1842 | env_block = strv_copy(environ); | |
e96d6be7 | 1843 | watchdog_close(true); |
d18f337c | 1844 | } |
e96d6be7 | 1845 | |
66713f77 LP |
1846 | /* Avoid the creation of new processes forked by the |
1847 | * kernel; at this point, we will not listen to the | |
1848 | * signals anyway */ | |
1849 | if (detect_container(NULL) <= 0) | |
1850 | cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER); | |
ad929bcc | 1851 | |
d18f337c LP |
1852 | execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block); |
1853 | free(env_block); | |
b9080b03 FF |
1854 | log_error("Failed to execute shutdown binary, freezing: %m"); |
1855 | } | |
1856 | ||
c3b3c274 LP |
1857 | if (getpid() == 1) |
1858 | freeze(); | |
1859 | ||
60918275 LP |
1860 | return retval; |
1861 | } |