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core: include sd-bus-vtable.h in dbus-*.h
[thirdparty/systemd.git] / src / core / main.c
CommitLineData
53e1b683 1/* SPDX-License-Identifier: LGPL-2.1+ */
a7334b09
LP		 2/***
3 This file is part of systemd.
4
5 Copyright 2010 Lennart Poettering
a7334b09
LP		 6***/
7
60918275 8#include <errno.h>
3dfc9763 9#include <fcntl.h>
f170852a 10#include <getopt.h>
97c4f35c 11#include <signal.h>
3dfc9763
LP		 12#include <stdio.h>
13#include <string.h>
664f88a7 14#include <sys/mount.h>
3dfc9763 15#include <sys/prctl.h>
b9e74c39 16#include <sys/reboot.h>
3dfc9763
LP		 17#include <sys/stat.h>
18#include <unistd.h>
349cc4a5 19#if HAVE_SECCOMP
b64a3d86
LP		 20#include <seccomp.h>
21#endif
349cc4a5 22#if HAVE_VALGRIND_VALGRIND_H
3dfc9763
LP		 23#include <valgrind/valgrind.h>
24#endif
54b434b1 25
718db961 26#include "sd-bus.h"
cf0fbc49 27#include "sd-daemon.h"
b2e7486c 28#include "sd-messages.h"
3dfc9763 29
b5efdb8a 30#include "alloc-util.h"
d9d93745 31#include "architecture.h"
3dfc9763
LP		 32#include "build.h"
33#include "bus-error.h"
34#include "bus-util.h"
430f0182 35#include "capability-util.h"
24efb112 36#include "clock-util.h"
3dfc9763 37#include "conf-parser.h"
618234a5 38#include "cpu-set-util.h"
3dfc9763
LP		 39#include "dbus-manager.h"
40#include "def.h"
eee8b7ab 41#include "emergency-action.h"
3dfc9763 42#include "env-util.h"
57b7a260 43#include "exit-status.h"
3ffd4af2 44#include "fd-util.h"
3dfc9763 45#include "fdset.h"
718db961 46#include "fileio.h"
f97b34a6 47#include "format-util.h"
f4f15635 48#include "fs-util.h"
3dfc9763
LP		 49#include "hostname-setup.h"
50#include "ima-setup.h"
51#include "killall.h"
52#include "kmod-setup.h"
d7b8eec7 53#include "load-fragment.h"
3dfc9763 54#include "log.h"
b6e66135 55#include "loopback-setup.h"
b6e66135 56#include "machine-id-setup.h"
3dfc9763
LP		 57#include "manager.h"
58#include "missing.h"
59#include "mount-setup.h"
d58ad743 60#include "os-util.h"
3dfc9763 61#include "pager.h"
6bedfcbb 62#include "parse-util.h"
7d5ceb64 63#include "path-util.h"
4e731273 64#include "proc-cmdline.h"
3dfc9763 65#include "process-util.h"
8869a0b4 66#include "raw-clone.h"
78f22b97 67#include "rlimit-util.h"
349cc4a5 68#if HAVE_SECCOMP
83f12b27
FS		 69#include "seccomp-util.h"
70#endif
b6e66135 71#include "selinux-setup.h"
3dfc9763
LP		 72#include "selinux-util.h"
73#include "signal-util.h"
ffbd2c4d 74#include "smack-setup.h"
3dfc9763 75#include "special.h"
8fcde012 76#include "stat-util.h"
15a5e950 77#include "stdio-util.h"
3dfc9763
LP		 78#include "strv.h"
79#include "switch-root.h"
80#include "terminal-util.h"
8612da97 81#include "umask-util.h"
b1d4f8e1 82#include "user-util.h"
9ce17593 83#include "util.h"
3dfc9763
LP		 84#include "virt.h"
85#include "watchdog.h"
b6e66135 86
f170852a
LP		 87static enum {
88 ACTION_RUN,
e965d56d 89 ACTION_HELP,
9ba0bc4e 90 ACTION_VERSION,
e537352b 91 ACTION_TEST,
494294d6 92 ACTION_DUMP_CONFIGURATION_ITEMS
fa0f4d8a 93} arg_action = ACTION_RUN;
fa0f4d8a 94static char *arg_default_unit = NULL;
463d0d15 95static bool arg_system = false;
fa0f4d8a 96static bool arg_dump_core = true;
fa0f4d8a 97static int arg_crash_chvt = -1;
b9e74c39
LP		 98static bool arg_crash_shell = false;
99static bool arg_crash_reboot = false;
7d5ceb64 100static char *arg_confirm_spawn = NULL;
b6e2f329 101static ShowStatus arg_show_status = _SHOW_STATUS_UNSET;
bf4df7c3 102static bool arg_switched_root = false;
ea4b98e6 103static bool arg_no_pager = false;
2a12e32e 104static bool arg_service_watchdogs = true;
0c85a4f3 105static char ***arg_join_controllers = NULL;
706343f4 106static ExecOutput arg_default_std_output = EXEC_OUTPUT_JOURNAL;
0a494f1f 107static ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT;
1f19a534
OS		 108static usec_t arg_default_restart_usec = DEFAULT_RESTART_USEC;
109static usec_t arg_default_timeout_start_usec = DEFAULT_TIMEOUT_USEC;
110static usec_t arg_default_timeout_stop_usec = DEFAULT_TIMEOUT_USEC;
3f41e1e5
LN		 111static usec_t arg_default_start_limit_interval = DEFAULT_START_LIMIT_INTERVAL;
112static unsigned arg_default_start_limit_burst = DEFAULT_START_LIMIT_BURST;
e96d6be7
LP		 113static usec_t arg_runtime_watchdog = 0;
114static usec_t arg_shutdown_watchdog = 10 * USEC_PER_MINUTE;
8a2c1fbf 115static char *arg_watchdog_device = NULL;
97d0e5f8 116static char **arg_default_environment = NULL;
517d56b1 117static struct rlimit *arg_default_rlimit[_RLIMIT_MAX] = {};
a103496c 118static uint64_t arg_capability_bounding_set = CAP_ALL;
39362f6f 119static bool arg_no_new_privs = false;
3a43da28 120static nsec_t arg_timer_slack_nsec = NSEC_INFINITY;
bd8f585b 121static usec_t arg_default_timer_accuracy_usec = 1 * USEC_PER_MINUTE;
d3b1c508
LP		 122static Set* arg_syscall_archs = NULL;
123static FILE* arg_serialization = NULL;
085afe36 124static bool arg_default_cpu_accounting = false;
13c31542 125static bool arg_default_io_accounting = false;
377bfd2d 126static bool arg_default_ip_accounting = false;
085afe36 127static bool arg_default_blockio_accounting = false;
444d5863 128static bool arg_default_memory_accounting = MEMORY_ACCOUNTING_DEFAULT;
9ded9cd1 129static bool arg_default_tasks_accounting = true;
79baeeb9 130static uint64_t arg_default_tasks_max = UINT64_MAX;
ee48dbd5 131static sd_id128_t arg_machine_id = {};
ae8c7939 132static EmergencyAction arg_cad_burst_action = EMERGENCY_ACTION_REBOOT_FORCE;
4fc935ca 133
848e863a 134_noreturn_ static void freeze_or_reboot(void) {
b9e74c39
LP		 135
136 if (arg_crash_reboot) {
137 log_notice("Rebooting in 10s...");
138 (void) sleep(10);
139
140 log_notice("Rebooting now...");
141 (void) reboot(RB_AUTOBOOT);
142 log_emergency_errno(errno, "Failed to reboot: %m");
143 }
144
145 log_emergency("Freezing execution.");
146 freeze();
147}
148
848e863a 149_noreturn_ static void crash(int sig) {
7d06dad9
MS		 150 struct sigaction sa;
151 pid_t pid;
97c4f35c 152
df0ff127 153 if (getpid_cached() != 1)
abb26902 154 /* Pass this on immediately, if this is not PID 1 */
92ca4cac 155 (void) raise(sig);
abb26902 156 else if (!arg_dump_core)
4104970e 157 log_emergency("Caught <%s>, not dumping core.", signal_to_string(sig));
97c4f35c 158 else {
7d06dad9 159 sa = (struct sigaction) {
189d5bac 160 .sa_handler = nop_signal_handler,
b92bea5d
ZJS		 161 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
162 };
97c4f35c 163
6f5e3f35 164 /* We want to wait for the core process, hence let's enable SIGCHLD */
92ca4cac 165 (void) sigaction(SIGCHLD, &sa, NULL);
6f5e3f35 166
8869a0b4 167 pid = raw_clone(SIGCHLD);
e62d8c39 168 if (pid < 0)
56f64d95 169 log_emergency_errno(errno, "Caught <%s>, cannot fork for core dump: %m", signal_to_string(sig));
97c4f35c 170 else if (pid == 0) {
97c4f35c 171 /* Enable default signal handler for core dump */
15a90032 172
92ca4cac
LP		 173 sa = (struct sigaction) {
174 .sa_handler = SIG_DFL,
175 };
176 (void) sigaction(sig, &sa, NULL);
97c4f35c 177
15a90032
LP		 178 /* Don't limit the coredump size */
179 (void) setrlimit(RLIMIT_CORE, &RLIMIT_MAKE_CONST(RLIM_INFINITY));
97c4f35c
LP		 180
181 /* Just to be sure... */
e62d9b81 182 (void) chdir("/");
97c4f35c
LP		 183
184 /* Raise the signal again */
ee05e779 185 pid = raw_getpid();
92ca4cac 186 (void) kill(pid, sig); /* raise() would kill the parent */
97c4f35c
LP		 187
188 assert_not_reached("We shouldn't be here...");
92ca4cac 189 _exit(EXIT_FAILURE);
4fc935ca 190 } else {
8e12a6ae
LP		 191 siginfo_t status;
192 int r;
4fc935ca
LP		 193
194 /* Order things nicely. */
e62d8c39
ZJS		 195 r = wait_for_terminate(pid, &status);
196 if (r < 0)
da927ba9 197 log_emergency_errno(r, "Caught <%s>, waitpid() failed: %m", signal_to_string(sig));
8e12a6ae 198 else if (status.si_code != CLD_DUMPED)
ee05e779
ZJS		 199 log_emergency("Caught <%s>, core dump failed (child "PID_FMT", code=%s, status=%i/%s).",
200 signal_to_string(sig),
201 pid, sigchld_code_to_string(status.si_code),
202 status.si_status,
203 strna(status.si_code == CLD_EXITED
38107f5a 204 ? exit_status_to_string(status.si_status, EXIT_STATUS_MINIMAL)
ee05e779 205 : signal_to_string(status.si_status)));
4fc935ca 206 else
4104970e 207 log_emergency("Caught <%s>, dumped core as pid "PID_FMT".", signal_to_string(sig), pid);
97c4f35c
LP		 208 }
209 }
210
b9e74c39 211 if (arg_crash_chvt >= 0)
92ca4cac 212 (void) chvt(arg_crash_chvt);
601f6a1e 213
7d06dad9
MS		 214 sa = (struct sigaction) {
215 .sa_handler = SIG_IGN,
216 .sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART,
217 };
218
219 /* Let the kernel reap children for us */
220 (void) sigaction(SIGCHLD, &sa, NULL);
8c43883a 221
7d06dad9 222 if (arg_crash_shell) {
b9e74c39 223 log_notice("Executing crash shell in 10s...");
92ca4cac 224 (void) sleep(10);
4fc935ca 225
8869a0b4 226 pid = raw_clone(SIGCHLD);
cd3bd60a 227 if (pid < 0)
56f64d95 228 log_emergency_errno(errno, "Failed to fork off crash shell: %m");
6f5e3f35 229 else if (pid == 0) {
b9e74c39 230 (void) setsid();
92ca4cac
LP		 231 (void) make_console_stdio();
232 (void) execle("/bin/sh", "/bin/sh", NULL, environ);
6f5e3f35 233
ee05e779 234 log_emergency_errno(errno, "execle() failed: %m");
92ca4cac 235 _exit(EXIT_FAILURE);
b9e74c39
LP		 236 } else {
237 log_info("Spawned crash shell as PID "PID_FMT".", pid);
4cf0b03b 238 (void) wait_for_terminate(pid, NULL);
b9e74c39 239 }
4fc935ca
LP		 240 }
241
b9e74c39 242 freeze_or_reboot();
97c4f35c
LP		 243}
244
245static void install_crash_handler(void) {
297d563d 246 static const struct sigaction sa = {
b92bea5d 247 .sa_handler = crash,
297d563d 248 .sa_flags = SA_NODEFER, /* So that we can raise the signal again from the signal handler */
b92bea5d 249 };
297d563d 250 int r;
97c4f35c 251
297d563d
LP		 252 /* We ignore the return value here, since, we don't mind if we
253 * cannot set up a crash handler */
254 r = sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1);
255 if (r < 0)
256 log_debug_errno(r, "I had trouble setting up the crash handler, ignoring: %m");
97c4f35c 257}
f170852a 258
56d96fc0
LP		 259static int console_setup(void) {
260 _cleanup_close_ int tty_fd = -1;
261 int r;
80876c20 262
512947d4 263 tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);
23bbb0de
MS		 264 if (tty_fd < 0)
265 return log_error_errno(tty_fd, "Failed to open /dev/console: %m");
80876c20 266
56d96fc0
LP		 267 /* We don't want to force text mode. plymouth may be showing
268 * pictures already from initrd. */
512947d4 269 r = reset_terminal_fd(tty_fd, false);
23bbb0de
MS		 270 if (r < 0)
271 return log_error_errno(r, "Failed to reset /dev/console: %m");
843d2643 272
56d96fc0 273 return 0;
80876c20
LP		 274}
275
b9e74c39
LP		 276static int parse_crash_chvt(const char *value) {
277 int b;
278
279 if (safe_atoi(value, &arg_crash_chvt) >= 0)
280 return 0;
281
282 b = parse_boolean(value);
283 if (b < 0)
284 return b;
285
286 if (b > 0)
287 arg_crash_chvt = 0; /* switch to where kmsg goes */
288 else
289 arg_crash_chvt = -1; /* turn off switching */
290
291 return 0;
292}
293
7d5ceb64
FB		 294static int parse_confirm_spawn(const char *value, char **console) {
295 char *s;
296 int r;
297
298 r = value ? parse_boolean(value) : 1;
299 if (r == 0) {
300 *console = NULL;
301 return 0;
302 }
303
304 if (r > 0) /* on with default tty */
305 s = strdup("/dev/console");
306 else if (is_path(value)) /* on with fully qualified path */
307 s = strdup(value);
308 else /* on with only a tty file name, not a fully qualified path */
309 s = strjoin("/dev/", value);
310 if (!s)
311 return -ENOMEM;
312 *console = s;
313 return 0;
314}
315
ee48dbd5 316static int set_machine_id(const char *m) {
e042eab7 317 sd_id128_t t;
8b26cdbd 318 assert(m);
ee48dbd5 319
e042eab7 320 if (sd_id128_from_string(m, &t) < 0)
ee48dbd5
NC		 321 return -EINVAL;
322
e042eab7 323 if (sd_id128_is_null(t))
ee48dbd5
NC		 324 return -EINVAL;
325
e042eab7 326 arg_machine_id = t;
ee48dbd5
NC		 327 return 0;
328}
329
96287a49 330static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
f170852a 331
059cb385 332 int r;
f170852a 333
059cb385 334 assert(key);
5192bd19 335
1d84ad94 336 if (STR_IN_SET(key, "systemd.unit", "rd.systemd.unit")) {
bf4df7c3 337
1d84ad94
LP		 338 if (proc_cmdline_value_missing(key, value))
339 return 0;
bf4df7c3 340
1d84ad94
LP		 341 if (!unit_name_is_valid(value, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE))
342 log_warning("Unit name specified on %s= is not valid, ignoring: %s", key, value);
343 else if (in_initrd() == !!startswith(key, "rd.")) {
344 if (free_and_strdup(&arg_default_unit, value) < 0)
345 return log_oom();
346 }
f170852a 347
1d84ad94 348 } else if (proc_cmdline_key_streq(key, "systemd.dump_core")) {
4fc935ca 349
1d84ad94 350 r = value ? parse_boolean(value) : true;
fb472900 351 if (r < 0)
059cb385 352 log_warning("Failed to parse dump core switch %s. Ignoring.", value);
4fc935ca 353 else
fa0f4d8a 354 arg_dump_core = r;
4fc935ca 355
1d84ad94 356 } else if (proc_cmdline_key_streq(key, "systemd.crash_chvt")) {
b9e74c39 357
1d84ad94
LP		 358 if (!value)
359 arg_crash_chvt = 0; /* turn on */
360 else if (parse_crash_chvt(value) < 0)
b9e74c39
LP		 361 log_warning("Failed to parse crash chvt switch %s. Ignoring.", value);
362
1d84ad94 363 } else if (proc_cmdline_key_streq(key, "systemd.crash_shell")) {
4fc935ca 364
1d84ad94 365 r = value ? parse_boolean(value) : true;
fb472900 366 if (r < 0)
059cb385 367 log_warning("Failed to parse crash shell switch %s. Ignoring.", value);
4fc935ca 368 else
fa0f4d8a 369 arg_crash_shell = r;
5e7ee61c 370
1d84ad94 371 } else if (proc_cmdline_key_streq(key, "systemd.crash_reboot")) {
5e7ee61c 372
1d84ad94 373 r = value ? parse_boolean(value) : true;
b9e74c39
LP		 374 if (r < 0)
375 log_warning("Failed to parse crash reboot switch %s. Ignoring.", value);
5e7ee61c 376 else
b9e74c39 377 arg_crash_reboot = r;
5e7ee61c 378
1d84ad94
LP		 379 } else if (proc_cmdline_key_streq(key, "systemd.confirm_spawn")) {
380 char *s;
7d5ceb64 381
1d84ad94 382 r = parse_confirm_spawn(value, &s);
059cb385 383 if (r < 0)
7d5ceb64 384 log_warning_errno(r, "Failed to parse confirm_spawn switch %s. Ignoring.", value);
1d84ad94
LP		 385 else {
386 free(arg_confirm_spawn);
387 arg_confirm_spawn = s;
388 }
601f6a1e 389
2a12e32e
JK		 390 } else if (proc_cmdline_key_streq(key, "systemd.service_watchdogs")) {
391
392 r = value ? parse_boolean(value) : true;
393 if (r < 0)
394 log_warning("Failed to parse service watchdog switch %s. Ignoring.", value);
395 else
396 arg_service_watchdogs = r;
397
1d84ad94 398 } else if (proc_cmdline_key_streq(key, "systemd.show_status")) {
9e58ff9c 399
1d84ad94
LP		 400 if (value) {
401 r = parse_show_status(value, &arg_show_status);
402 if (r < 0)
403 log_warning("Failed to parse show status switch %s. Ignoring.", value);
404 } else
405 arg_show_status = SHOW_STATUS_YES;
059cb385 406
1d84ad94
LP		 407 } else if (proc_cmdline_key_streq(key, "systemd.default_standard_output")) {
408
409 if (proc_cmdline_value_missing(key, value))
410 return 0;
0a494f1f 411
059cb385 412 r = exec_output_from_string(value);
fb472900 413 if (r < 0)
059cb385 414 log_warning("Failed to parse default standard output switch %s. Ignoring.", value);
0a494f1f
LP		 415 else
416 arg_default_std_output = r;
0a494f1f 417
1d84ad94
LP		 418 } else if (proc_cmdline_key_streq(key, "systemd.default_standard_error")) {
419
420 if (proc_cmdline_value_missing(key, value))
421 return 0;
059cb385
LP		 422
423 r = exec_output_from_string(value);
fb472900 424 if (r < 0)
059cb385 425 log_warning("Failed to parse default standard error switch %s. Ignoring.", value);
0a494f1f
LP		 426 else
427 arg_default_std_error = r;
9e7c5357 428
1d84ad94
LP		 429 } else if (streq(key, "systemd.setenv")) {
430
431 if (proc_cmdline_value_missing(key, value))
432 return 0;
059cb385
LP		 433
434 if (env_assignment_is_valid(value)) {
e21fea24
KS		 435 char **env;
436
059cb385 437 env = strv_env_set(arg_default_environment, value);
1d84ad94
LP		 438 if (!env)
439 return log_oom();
440
441 arg_default_environment = env;
e21fea24 442 } else
059cb385 443 log_warning("Environment variable name '%s' is not valid. Ignoring.", value);
9e58ff9c 444
1d84ad94
LP		 445 } else if (proc_cmdline_key_streq(key, "systemd.machine_id")) {
446
447 if (proc_cmdline_value_missing(key, value))
448 return 0;
449
450 r = set_machine_id(value);
451 if (r < 0)
452 log_warning("MachineID '%s' is not valid. Ignoring.", value);
ee48dbd5 453
1d84ad94
LP		 454 } else if (proc_cmdline_key_streq(key, "systemd.default_timeout_start_sec")) {
455
456 if (proc_cmdline_value_missing(key, value))
457 return 0;
458
459 r = parse_sec(value, &arg_default_timeout_start_usec);
460 if (r < 0)
461 log_warning_errno(r, "Failed to parse default start timeout: %s, ignoring.", value);
462
463 if (arg_default_timeout_start_usec <= 0)
464 arg_default_timeout_start_usec = USEC_INFINITY;
ee48dbd5 465
8a2c1fbf
EJ		 466 } else if (proc_cmdline_key_streq(key, "systemd.watchdog_device")) {
467
468 if (proc_cmdline_value_missing(key, value))
469 return 0;
470
471 parse_path_argument_and_warn(value, false, &arg_watchdog_device);
472
059cb385 473 } else if (streq(key, "quiet") && !value) {
d7b15e0a 474
b6e2f329 475 if (arg_show_status == _SHOW_STATUS_UNSET)
d450b6f2 476 arg_show_status = SHOW_STATUS_AUTO;
059cb385
LP		 477
478 } else if (streq(key, "debug") && !value) {
d7b15e0a 479
1de1c9c3
LP		 480 /* Note that log_parse_environment() handles 'debug'
481 * too, and sets the log level to LOG_DEBUG. */
d7b15e0a 482
75f86906 483 if (detect_container() > 0)
b2103dcc 484 log_set_target(LOG_TARGET_CONSOLE);
059cb385 485
dcd61450 486 } else if (!value) {
e2c9a131 487 const char *target;
f170852a
LP		 488
489 /* SysV compatibility */
e2c9a131
EV		 490 target = runlevel_to_target(key);
491 if (target)
492 return free_and_strdup(&arg_default_unit, target);
f170852a
LP		 493 }
494
495 return 0;
496}
497
e8e581bf
ZJS		 498#define DEFINE_SETTER(name, func, descr) \
499 static int name(const char *unit, \
500 const char *filename, \
501 unsigned line, \
502 const char *section, \
71a61510 503 unsigned section_line, \
e8e581bf
ZJS		 504 const char *lvalue, \
505 int ltype, \
506 const char *rvalue, \
507 void *data, \
508 void *userdata) { \
509 \
510 int r; \
511 \
512 assert(filename); \
513 assert(lvalue); \
514 assert(rvalue); \
515 \
516 r = func(rvalue); \
517 if (r < 0) \
d1cefe0a
LP		 518 log_syntax(unit, LOG_ERR, filename, line, r, \
519 "Invalid " descr "'%s': %m", \
520 rvalue); \
e8e581bf
ZJS		 521 \
522 return 0; \
523 }
487393e9 524
e8e581bf
ZJS		 525DEFINE_SETTER(config_parse_level2, log_set_max_level_from_string, "log level")
526DEFINE_SETTER(config_parse_target, log_set_target_from_string, "target")
527DEFINE_SETTER(config_parse_color, log_show_color_from_string, "color" )
528DEFINE_SETTER(config_parse_location, log_show_location_from_string, "location")
487393e9 529
4d7213b2
LP		 530static int config_parse_cpu_affinity2(
531 const char *unit,
532 const char *filename,
533 unsigned line,
534 const char *section,
535 unsigned section_line,
536 const char *lvalue,
537 int ltype,
538 const char *rvalue,
539 void *data,
540 void *userdata) {
487393e9 541
4b40bc38 542 _cleanup_cpu_free_ cpu_set_t *c = NULL;
f5c72b73 543 int ncpus;
487393e9 544
765d143b 545 ncpus = parse_cpu_set_and_warn(rvalue, &c, unit, filename, line, lvalue);
f5c72b73
FB		 546 if (ncpus < 0)
547 return ncpus;
487393e9 548
f5c72b73 549 if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0)
25f027c5 550 log_warning_errno(errno, "Failed to set CPU affinity: %m");
487393e9 551
487393e9
LP		 552 return 0;
553}
554
4d7213b2
LP		 555static int config_parse_show_status(
556 const char* unit,
557 const char *filename,
558 unsigned line,
559 const char *section,
560 unsigned section_line,
561 const char *lvalue,
562 int ltype,
563 const char *rvalue,
564 void *data,
565 void *userdata) {
566
567 int k;
568 ShowStatus *b = data;
569
570 assert(filename);
571 assert(lvalue);
572 assert(rvalue);
573 assert(data);
574
575 k = parse_show_status(rvalue, b);
576 if (k < 0) {
12ca818f 577 log_syntax(unit, LOG_ERR, filename, line, k, "Failed to parse show status setting, ignoring: %s", rvalue);
4d7213b2
LP		 578 return 0;
579 }
580
581 return 0;
582}
583
5db98187
LP		 584static int config_parse_output_restricted(
585 const char* unit,
586 const char *filename,
587 unsigned line,
588 const char *section,
589 unsigned section_line,
590 const char *lvalue,
591 int ltype,
592 const char *rvalue,
593 void *data,
594 void *userdata) {
595
596 ExecOutput t, *eo = data;
597
598 assert(filename);
599 assert(lvalue);
600 assert(rvalue);
601 assert(data);
602
603 t = exec_output_from_string(rvalue);
604 if (t < 0) {
605 log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse output type, ignoring: %s", rvalue);
606 return 0;
607 }
608
609 if (IN_SET(t, EXEC_OUTPUT_SOCKET, EXEC_OUTPUT_NAMED_FD, EXEC_OUTPUT_FILE)) {
610 log_syntax(unit, LOG_ERR, filename, line, 0, "Standard output types socket, fd:, file: are not supported as defaults, ignoring: %s", rvalue);
611 return 0;
612 }
613
614 *eo = t;
615 return 0;
616}
617
b9e74c39
LP		 618static int config_parse_crash_chvt(
619 const char* unit,
620 const char *filename,
621 unsigned line,
622 const char *section,
623 unsigned section_line,
624 const char *lvalue,
625 int ltype,
626 const char *rvalue,
627 void *data,
628 void *userdata) {
629
630 int r;
631
632 assert(filename);
633 assert(lvalue);
634 assert(rvalue);
b9e74c39
LP		 635
636 r = parse_crash_chvt(rvalue);
637 if (r < 0) {
638 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse CrashChangeVT= setting, ignoring: %s", rvalue);
639 return 0;
640 }
641
642 return 0;
643}
644
487393e9
LP		 645static int parse_config_file(void) {
646
f975e971 647 const ConfigTableItem items[] = {
d3b1c508
LP		 648 { "Manager", "LogLevel", config_parse_level2, 0, NULL },
649 { "Manager", "LogTarget", config_parse_target, 0, NULL },
650 { "Manager", "LogColor", config_parse_color, 0, NULL },
651 { "Manager", "LogLocation", config_parse_location, 0, NULL },
652 { "Manager", "DumpCore", config_parse_bool, 0, &arg_dump_core },
b9e74c39
LP		 653 { "Manager", "CrashChVT", /* legacy */ config_parse_crash_chvt, 0, NULL },
654 { "Manager", "CrashChangeVT", config_parse_crash_chvt, 0, NULL },
d3b1c508 655 { "Manager", "CrashShell", config_parse_bool, 0, &arg_crash_shell },
b9e74c39 656 { "Manager", "CrashReboot", config_parse_bool, 0, &arg_crash_reboot },
d3b1c508 657 { "Manager", "ShowStatus", config_parse_show_status, 0, &arg_show_status },
d3b1c508
LP		 658 { "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, NULL },
659 { "Manager", "JoinControllers", config_parse_join_controllers, 0, &arg_join_controllers },
660 { "Manager", "RuntimeWatchdogSec", config_parse_sec, 0, &arg_runtime_watchdog },
661 { "Manager", "ShutdownWatchdogSec", config_parse_sec, 0, &arg_shutdown_watchdog },
8a2c1fbf 662 { "Manager", "WatchdogDevice", config_parse_path, 0, &arg_watchdog_device },
a103496c 663 { "Manager", "CapabilityBoundingSet", config_parse_capability_set, 0, &arg_capability_bounding_set },
39362f6f 664 { "Manager", "NoNewPrivileges", config_parse_bool, 0, &arg_no_new_privs },
349cc4a5 665#if HAVE_SECCOMP
d3b1c508 666 { "Manager", "SystemCallArchitectures", config_parse_syscall_archs, 0, &arg_syscall_archs },
89fffa27 667#endif
d3b1c508 668 { "Manager", "TimerSlackNSec", config_parse_nsec, 0, &arg_timer_slack_nsec },
bd8f585b 669 { "Manager", "DefaultTimerAccuracySec", config_parse_sec, 0, &arg_default_timer_accuracy_usec },
5db98187
LP		 670 { "Manager", "DefaultStandardOutput", config_parse_output_restricted,0, &arg_default_std_output },
671 { "Manager", "DefaultStandardError", config_parse_output_restricted,0, &arg_default_std_error },
d3b1c508
LP		 672 { "Manager", "DefaultTimeoutStartSec", config_parse_sec, 0, &arg_default_timeout_start_usec },
673 { "Manager", "DefaultTimeoutStopSec", config_parse_sec, 0, &arg_default_timeout_stop_usec },
674 { "Manager", "DefaultRestartSec", config_parse_sec, 0, &arg_default_restart_usec },
f0367da7
LP		 675 { "Manager", "DefaultStartLimitInterval", config_parse_sec, 0, &arg_default_start_limit_interval }, /* obsolete alias */
676 { "Manager", "DefaultStartLimitIntervalSec",config_parse_sec, 0, &arg_default_start_limit_interval },
d3b1c508
LP		 677 { "Manager", "DefaultStartLimitBurst", config_parse_unsigned, 0, &arg_default_start_limit_burst },
678 { "Manager", "DefaultEnvironment", config_parse_environ, 0, &arg_default_environment },
4f424df7
LP		 679 { "Manager", "DefaultLimitCPU", config_parse_rlimit, RLIMIT_CPU, arg_default_rlimit },
680 { "Manager", "DefaultLimitFSIZE", config_parse_rlimit, RLIMIT_FSIZE, arg_default_rlimit },
681 { "Manager", "DefaultLimitDATA", config_parse_rlimit, RLIMIT_DATA, arg_default_rlimit },
682 { "Manager", "DefaultLimitSTACK", config_parse_rlimit, RLIMIT_STACK, arg_default_rlimit },
683 { "Manager", "DefaultLimitCORE", config_parse_rlimit, RLIMIT_CORE, arg_default_rlimit },
684 { "Manager", "DefaultLimitRSS", config_parse_rlimit, RLIMIT_RSS, arg_default_rlimit },
685 { "Manager", "DefaultLimitNOFILE", config_parse_rlimit, RLIMIT_NOFILE, arg_default_rlimit },
686 { "Manager", "DefaultLimitAS", config_parse_rlimit, RLIMIT_AS, arg_default_rlimit },
687 { "Manager", "DefaultLimitNPROC", config_parse_rlimit, RLIMIT_NPROC, arg_default_rlimit },
688 { "Manager", "DefaultLimitMEMLOCK", config_parse_rlimit, RLIMIT_MEMLOCK, arg_default_rlimit },
689 { "Manager", "DefaultLimitLOCKS", config_parse_rlimit, RLIMIT_LOCKS, arg_default_rlimit },
690 { "Manager", "DefaultLimitSIGPENDING", config_parse_rlimit, RLIMIT_SIGPENDING, arg_default_rlimit },
691 { "Manager", "DefaultLimitMSGQUEUE", config_parse_rlimit, RLIMIT_MSGQUEUE, arg_default_rlimit },
692 { "Manager", "DefaultLimitNICE", config_parse_rlimit, RLIMIT_NICE, arg_default_rlimit },
693 { "Manager", "DefaultLimitRTPRIO", config_parse_rlimit, RLIMIT_RTPRIO, arg_default_rlimit },
694 { "Manager", "DefaultLimitRTTIME", config_parse_rlimit, RLIMIT_RTTIME, arg_default_rlimit },
085afe36 695 { "Manager", "DefaultCPUAccounting", config_parse_bool, 0, &arg_default_cpu_accounting },
13c31542 696 { "Manager", "DefaultIOAccounting", config_parse_bool, 0, &arg_default_io_accounting },
377bfd2d 697 { "Manager", "DefaultIPAccounting", config_parse_bool, 0, &arg_default_ip_accounting },
085afe36
LP		 698 { "Manager", "DefaultBlockIOAccounting", config_parse_bool, 0, &arg_default_blockio_accounting },
699 { "Manager", "DefaultMemoryAccounting", config_parse_bool, 0, &arg_default_memory_accounting },
03a7b521 700 { "Manager", "DefaultTasksAccounting", config_parse_bool, 0, &arg_default_tasks_accounting },
0af20ea2 701 { "Manager", "DefaultTasksMax", config_parse_tasks_max, 0, &arg_default_tasks_max },
ae8c7939 702 { "Manager", "CtrlAltDelBurstAction", config_parse_emergency_action, 0, &arg_cad_burst_action },
d3b1c508 703 {}
487393e9
LP		 704 };
705
1b907b5c 706 const char *fn, *conf_dirs_nulstr;
487393e9 707
463d0d15 708 fn = arg_system ?
75eb6154
LP		 709 PKGSYSCONFDIR "/system.conf" :
710 PKGSYSCONFDIR "/user.conf";
711
463d0d15 712 conf_dirs_nulstr = arg_system ?
75eb6154
LP		 713 CONF_PATHS_NULSTR("systemd/system.conf.d") :
714 CONF_PATHS_NULSTR("systemd/user.conf.d");
715
bcde742e 716 (void) config_parse_many_nulstr(fn, conf_dirs_nulstr, "Manager\0", config_item_table_lookup, items, CONFIG_PARSE_WARN, NULL);
36c16a7c
LP		 717
718 /* Traditionally "0" was used to turn off the default unit timeouts. Fix this up so that we used USEC_INFINITY
719 * like everywhere else. */
720 if (arg_default_timeout_start_usec <= 0)
721 arg_default_timeout_start_usec = USEC_INFINITY;
722 if (arg_default_timeout_stop_usec <= 0)
723 arg_default_timeout_stop_usec = USEC_INFINITY;
487393e9 724
487393e9
LP		 725 return 0;
726}
727
85cb4151 728static void set_manager_defaults(Manager *m) {
06af2a04
TB		 729
730 assert(m);
731
732 m->default_timer_accuracy_usec = arg_default_timer_accuracy_usec;
733 m->default_std_output = arg_default_std_output;
734 m->default_std_error = arg_default_std_error;
735 m->default_timeout_start_usec = arg_default_timeout_start_usec;
736 m->default_timeout_stop_usec = arg_default_timeout_stop_usec;
737 m->default_restart_usec = arg_default_restart_usec;
738 m->default_start_limit_interval = arg_default_start_limit_interval;
739 m->default_start_limit_burst = arg_default_start_limit_burst;
740 m->default_cpu_accounting = arg_default_cpu_accounting;
13c31542 741 m->default_io_accounting = arg_default_io_accounting;
377bfd2d 742 m->default_ip_accounting = arg_default_ip_accounting;
06af2a04
TB		 743 m->default_blockio_accounting = arg_default_blockio_accounting;
744 m->default_memory_accounting = arg_default_memory_accounting;
03a7b521 745 m->default_tasks_accounting = arg_default_tasks_accounting;
0af20ea2 746 m->default_tasks_max = arg_default_tasks_max;
06af2a04
TB		 747
748 manager_set_default_rlimits(m, arg_default_rlimit);
749 manager_environment_add(m, NULL, arg_default_environment);
750}
751
7b46fc6a
LP		 752static void set_manager_settings(Manager *m) {
753
754 assert(m);
755
756 m->confirm_spawn = arg_confirm_spawn;
2a12e32e 757 m->service_watchdogs = arg_service_watchdogs;
7b46fc6a
LP		 758 m->runtime_watchdog = arg_runtime_watchdog;
759 m->shutdown_watchdog = arg_shutdown_watchdog;
760 m->cad_burst_action = arg_cad_burst_action;
761
762 manager_set_show_status(m, arg_show_status);
763}
764
f170852a 765static int parse_argv(int argc, char *argv[]) {
f170852a
LP		 766 enum {
767 ARG_LOG_LEVEL = 0x100,
768 ARG_LOG_TARGET,
bbe63281
LP		 769 ARG_LOG_COLOR,
770 ARG_LOG_LOCATION,
2f198e2f 771 ARG_UNIT,
edb9aaa8 772 ARG_SYSTEM,
af2d49f7 773 ARG_USER,
e537352b 774 ARG_TEST,
b87c2aa6 775 ARG_NO_PAGER,
9ba0bc4e 776 ARG_VERSION,
80876c20 777 ARG_DUMP_CONFIGURATION_ITEMS,
9e58ff9c 778 ARG_DUMP_CORE,
b9e74c39 779 ARG_CRASH_CHVT,
9e58ff9c 780 ARG_CRASH_SHELL,
b9e74c39 781 ARG_CRASH_REBOOT,
a16e1123 782 ARG_CONFIRM_SPAWN,
9e58ff9c 783 ARG_SHOW_STATUS,
4288f619 784 ARG_DESERIALIZE,
2660882b 785 ARG_SWITCHED_ROOT,
0a494f1f 786 ARG_DEFAULT_STD_OUTPUT,
ee48dbd5 787 ARG_DEFAULT_STD_ERROR,
2a12e32e
JK		 788 ARG_MACHINE_ID,
789 ARG_SERVICE_WATCHDOGS,
f170852a
LP		 790 };
791
792 static const struct option options[] = {
a16e1123
LP		 793 { "log-level", required_argument, NULL, ARG_LOG_LEVEL },
794 { "log-target", required_argument, NULL, ARG_LOG_TARGET },
bbe63281
LP		 795 { "log-color", optional_argument, NULL, ARG_LOG_COLOR },
796 { "log-location", optional_argument, NULL, ARG_LOG_LOCATION },
2f198e2f 797 { "unit", required_argument, NULL, ARG_UNIT },
edb9aaa8 798 { "system", no_argument, NULL, ARG_SYSTEM },
af2d49f7 799 { "user", no_argument, NULL, ARG_USER },
a16e1123 800 { "test", no_argument, NULL, ARG_TEST },
b87c2aa6 801 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
a16e1123 802 { "help", no_argument, NULL, 'h' },
9ba0bc4e 803 { "version", no_argument, NULL, ARG_VERSION },
a16e1123 804 { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
a5d87bf0 805 { "dump-core", optional_argument, NULL, ARG_DUMP_CORE },
b9e74c39 806 { "crash-chvt", required_argument, NULL, ARG_CRASH_CHVT },
a5d87bf0 807 { "crash-shell", optional_argument, NULL, ARG_CRASH_SHELL },
b9e74c39 808 { "crash-reboot", optional_argument, NULL, ARG_CRASH_REBOOT },
a5d87bf0 809 { "confirm-spawn", optional_argument, NULL, ARG_CONFIRM_SPAWN },
6e98720f 810 { "show-status", optional_argument, NULL, ARG_SHOW_STATUS },
a16e1123 811 { "deserialize", required_argument, NULL, ARG_DESERIALIZE },
2660882b 812 { "switched-root", no_argument, NULL, ARG_SWITCHED_ROOT },
0a494f1f
LP		 813 { "default-standard-output", required_argument, NULL, ARG_DEFAULT_STD_OUTPUT, },
814 { "default-standard-error", required_argument, NULL, ARG_DEFAULT_STD_ERROR, },
ee48dbd5 815 { "machine-id", required_argument, NULL, ARG_MACHINE_ID },
2a12e32e 816 { "service-watchdogs", required_argument, NULL, ARG_SERVICE_WATCHDOGS },
fb472900 817 {}
f170852a
LP		 818 };
819
820 int c, r;
821
822 assert(argc >= 1);
823 assert(argv);
824
df0ff127 825 if (getpid_cached() == 1)
b770165a
LP		 826 opterr = 0;
827
099663ff 828 while ((c = getopt_long(argc, argv, "hDbsz:", options, NULL)) >= 0)
f170852a
LP		 829
830 switch (c) {
831
832 case ARG_LOG_LEVEL:
fb472900
ZJS		 833 r = log_set_max_level_from_string(optarg);
834 if (r < 0) {
f170852a
LP		 835 log_error("Failed to parse log level %s.", optarg);
836 return r;
837 }
838
839 break;
840
841 case ARG_LOG_TARGET:
fb472900
ZJS		 842 r = log_set_target_from_string(optarg);
843 if (r < 0) {
f170852a
LP		 844 log_error("Failed to parse log target %s.", optarg);
845 return r;
846 }
847
848 break;
849
bbe63281
LP		 850 case ARG_LOG_COLOR:
851
d0b170c8 852 if (optarg) {
fb472900
ZJS		 853 r = log_show_color_from_string(optarg);
854 if (r < 0) {
d0b170c8
LP		 855 log_error("Failed to parse log color setting %s.", optarg);
856 return r;
857 }
858 } else
859 log_show_color(true);
bbe63281
LP		 860
861 break;
862
863 case ARG_LOG_LOCATION:
d0b170c8 864 if (optarg) {
fb472900
ZJS		 865 r = log_show_location_from_string(optarg);
866 if (r < 0) {
d0b170c8
LP		 867 log_error("Failed to parse log location setting %s.", optarg);
868 return r;
869 }
870 } else
871 log_show_location(true);
bbe63281
LP		 872
873 break;
874
0a494f1f 875 case ARG_DEFAULT_STD_OUTPUT:
fb472900
ZJS		 876 r = exec_output_from_string(optarg);
877 if (r < 0) {
0a494f1f
LP		 878 log_error("Failed to parse default standard output setting %s.", optarg);
879 return r;
880 } else
881 arg_default_std_output = r;
882 break;
883
884 case ARG_DEFAULT_STD_ERROR:
fb472900
ZJS		 885 r = exec_output_from_string(optarg);
886 if (r < 0) {
0a494f1f
LP		 887 log_error("Failed to parse default standard error output setting %s.", optarg);
888 return r;
889 } else
890 arg_default_std_error = r;
891 break;
892
2f198e2f 893 case ARG_UNIT:
e6e242ad 894 r = free_and_strdup(&arg_default_unit, optarg);
23bbb0de
MS		 895 if (r < 0)
896 return log_error_errno(r, "Failed to set default unit %s: %m", optarg);
f170852a
LP		 897
898 break;
899
edb9aaa8 900 case ARG_SYSTEM:
463d0d15 901 arg_system = true;
edb9aaa8 902 break;
a5dab5ce 903
af2d49f7 904 case ARG_USER:
463d0d15 905 arg_system = false;
a5dab5ce 906 break;
a5dab5ce 907
e965d56d 908 case ARG_TEST:
fa0f4d8a 909 arg_action = ACTION_TEST;
b87c2aa6
ZJS		 910 break;
911
912 case ARG_NO_PAGER:
913 arg_no_pager = true;
e965d56d
LP		 914 break;
915
9ba0bc4e
ZJS		 916 case ARG_VERSION:
917 arg_action = ACTION_VERSION;
918 break;
919
e537352b 920 case ARG_DUMP_CONFIGURATION_ITEMS:
fa0f4d8a 921 arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
e537352b
LP		 922 break;
923
9e58ff9c 924 case ARG_DUMP_CORE:
b9e74c39
LP		 925 if (!optarg)
926 arg_dump_core = true;
927 else {
928 r = parse_boolean(optarg);
929 if (r < 0)
930 return log_error_errno(r, "Failed to parse dump core boolean: %s", optarg);
931 arg_dump_core = r;
a5d87bf0 932 }
b9e74c39
LP		 933 break;
934
935 case ARG_CRASH_CHVT:
936 r = parse_crash_chvt(optarg);
937 if (r < 0)
938 return log_error_errno(r, "Failed to parse crash virtual terminal index: %s", optarg);
9e58ff9c
LP		 939 break;
940
941 case ARG_CRASH_SHELL:
b9e74c39
LP		 942 if (!optarg)
943 arg_crash_shell = true;
944 else {
945 r = parse_boolean(optarg);
946 if (r < 0)
947 return log_error_errno(r, "Failed to parse crash shell boolean: %s", optarg);
948 arg_crash_shell = r;
949 }
950 break;
951
952 case ARG_CRASH_REBOOT:
953 if (!optarg)
954 arg_crash_reboot = true;
955 else {
956 r = parse_boolean(optarg);
957 if (r < 0)
958 return log_error_errno(r, "Failed to parse crash shell boolean: %s", optarg);
959 arg_crash_reboot = r;
a5d87bf0 960 }
9e58ff9c
LP		 961 break;
962
80876c20 963 case ARG_CONFIRM_SPAWN:
7d5ceb64
FB		 964 arg_confirm_spawn = mfree(arg_confirm_spawn);
965
966 r = parse_confirm_spawn(optarg, &arg_confirm_spawn);
967 if (r < 0)
968 return log_error_errno(r, "Failed to parse confirm spawn option: %m");
80876c20
LP		 969 break;
970
2a12e32e
JK		 971 case ARG_SERVICE_WATCHDOGS:
972 r = parse_boolean(optarg);
973 if (r < 0)
974 return log_error_errno(r, "Failed to parse service watchdogs boolean: %s", optarg);
975 arg_service_watchdogs = r;
976 break;
977
9e58ff9c 978 case ARG_SHOW_STATUS:
d450b6f2
ZJS		 979 if (optarg) {
980 r = parse_show_status(optarg, &arg_show_status);
981 if (r < 0) {
982 log_error("Failed to parse show status boolean %s.", optarg);
983 return r;
984 }
985 } else
986 arg_show_status = SHOW_STATUS_YES;
6e98720f 987 break;
a5d87bf0 988
a16e1123
LP		 989 case ARG_DESERIALIZE: {
990 int fd;
991 FILE *f;
992
01e10de3
LP		 993 r = safe_atoi(optarg, &fd);
994 if (r < 0 || fd < 0) {
a16e1123 995 log_error("Failed to parse deserialize option %s.", optarg);
b9e74c39 996 return -EINVAL;
a16e1123
LP		 997 }
998
b9e74c39 999 (void) fd_cloexec(fd, true);
01e10de3
LP		 1000
1001 f = fdopen(fd, "r");
4a62c710
MS		 1002 if (!f)
1003 return log_error_errno(errno, "Failed to open serialization fd: %m");
a16e1123 1004
74ca738f 1005 safe_fclose(arg_serialization);
d3b1c508 1006 arg_serialization = f;
a16e1123
LP		 1007
1008 break;
1009 }
1010
2660882b 1011 case ARG_SWITCHED_ROOT:
bf4df7c3 1012 arg_switched_root = true;
d03bc1b8
HH		 1013 break;
1014
ee48dbd5
NC		 1015 case ARG_MACHINE_ID:
1016 r = set_machine_id(optarg);
54500613
LP		 1017 if (r < 0)
1018 return log_error_errno(r, "MachineID '%s' is not valid.", optarg);
ee48dbd5
NC		 1019 break;
1020
f170852a 1021 case 'h':
fa0f4d8a 1022 arg_action = ACTION_HELP;
f170852a
LP		 1023 break;
1024
1d2e23ab
LP		 1025 case 'D':
1026 log_set_max_level(LOG_DEBUG);
1027 break;
1028
099663ff
LP		 1029 case 'b':
1030 case 's':
1031 case 'z':
1032 /* Just to eat away the sysvinit kernel
1033 * cmdline args without getopt() error
1034 * messages that we'll parse in
1035 * parse_proc_cmdline_word() or ignore. */
f170852a 1036
099663ff 1037 case '?':
df0ff127 1038 if (getpid_cached() != 1)
099663ff 1039 return -EINVAL;
601185b4
ZJS		 1040 else
1041 return 0;
099663ff 1042
601185b4
ZJS		 1043 default:
1044 assert_not_reached("Unhandled option code.");
f170852a
LP		 1045 }
1046
df0ff127 1047 if (optind < argc && getpid_cached() != 1) {
d821e6d6
LP		 1048 /* Hmm, when we aren't run as init system
1049 * let's complain about excess arguments */
1050
1051 log_error("Excess arguments.");
1052 return -EINVAL;
1053 }
1054
f170852a
LP		 1055 return 0;
1056}
1057
1058static int help(void) {
1059
2e33c433 1060 printf("%s [OPTIONS...]\n\n"
af2d49f7 1061 "Starts up and maintains the system or user services.\n\n"
e537352b 1062 " -h --help Show this help\n"
cb4069d9 1063 " --version Show version\n"
e537352b 1064 " --test Determine startup sequence, dump it and exit\n"
b87c2aa6 1065 " --no-pager Do not pipe output into a pager\n"
80876c20 1066 " --dump-configuration-items Dump understood unit configuration items\n"
9e58ff9c 1067 " --unit=UNIT Set default unit\n"
edb9aaa8 1068 " --system Run a system instance, even if PID != 1\n"
af2d49f7 1069 " --user Run a user instance\n"
b9e74c39
LP		 1070 " --dump-core[=BOOL] Dump core on crash\n"
1071 " --crash-vt=NR Change to specified VT on crash\n"
1072 " --crash-reboot[=BOOL] Reboot on crash\n"
1073 " --crash-shell[=BOOL] Run shell on crash\n"
1074 " --confirm-spawn[=BOOL] Ask for confirmation when spawning processes\n"
1075 " --show-status[=BOOL] Show status updates on the console during bootup\n"
c1dc6153 1076 " --log-target=TARGET Set log target (console, journal, kmsg, journal-or-kmsg, null)\n"
9e58ff9c 1077 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
b9e74c39
LP		 1078 " --log-color[=BOOL] Highlight important log messages\n"
1079 " --log-location[=BOOL] Include code location in log messages\n"
0a494f1f
LP		 1080 " --default-standard-output= Set default standard output for services\n"
1081 " --default-standard-error= Set default standard error output for services\n",
5b6319dc 1082 program_invocation_short_name);
f170852a
LP		 1083
1084 return 0;
1085}
1086
b3680f49 1087static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds, bool switching_root) {
48b90859
LP		 1088 _cleanup_fdset_free_ FDSet *fds = NULL;
1089 _cleanup_fclose_ FILE *f = NULL;
a16e1123
LP		 1090 int r;
1091
1092 assert(m);
1093 assert(_f);
1094 assert(_fds);
1095
6b78f9b4 1096 r = manager_open_serialization(m, &f);
48b90859
LP		 1097 if (r < 0)
1098 return log_error_errno(r, "Failed to create serialization file: %m");
a16e1123 1099
71445ae7 1100 /* Make sure nothing is really destructed when we shut down */
313cefa1 1101 m->n_reloading++;
718db961 1102 bus_manager_send_reloading(m, true);
71445ae7 1103
6b78f9b4 1104 fds = fdset_new();
48b90859
LP		 1105 if (!fds)
1106 return log_oom();
a16e1123 1107
b3680f49 1108 r = manager_serialize(m, f, fds, switching_root);
48b90859
LP		 1109 if (r < 0)
1110 return log_error_errno(r, "Failed to serialize state: %m");
a16e1123 1111
48b90859
LP		 1112 if (fseeko(f, 0, SEEK_SET) == (off_t) -1)
1113 return log_error_errno(errno, "Failed to rewind serialization fd: %m");
a16e1123 1114
6b78f9b4 1115 r = fd_cloexec(fileno(f), false);
48b90859
LP		 1116 if (r < 0)
1117 return log_error_errno(r, "Failed to disable O_CLOEXEC for serialization: %m");
a16e1123 1118
6b78f9b4 1119 r = fdset_cloexec(fds, false);
48b90859
LP		 1120 if (r < 0)
1121 return log_error_errno(r, "Failed to disable O_CLOEXEC for serialization fds: %m");
a16e1123 1122
1cc6c93a
YW		 1123 *_f = TAKE_PTR(f);
1124 *_fds = TAKE_PTR(fds);
a16e1123 1125
48b90859 1126 return 0;
a16e1123
LP		 1127}
1128
4096d6f5
LP		 1129static int bump_rlimit_nofile(struct rlimit *saved_rlimit) {
1130 struct rlimit nl;
1131 int r;
6385cb31
CB		 1132 int min_max;
1133 _cleanup_free_ char *nr_open = NULL;
4096d6f5
LP		 1134
1135 assert(saved_rlimit);
1136
1137 /* Save the original RLIMIT_NOFILE so that we can reset it
1138 * later when transitioning from the initrd to the main
1139 * systemd or suchlike. */
4a62c710 1140 if (getrlimit(RLIMIT_NOFILE, saved_rlimit) < 0)
3ce40911 1141 return log_warning_errno(errno, "Reading RLIMIT_NOFILE failed, ignoring: %m");
4096d6f5
LP		 1142
1143 /* Make sure forked processes get the default kernel setting */
1144 if (!arg_default_rlimit[RLIMIT_NOFILE]) {
1145 struct rlimit *rl;
1146
1147 rl = newdup(struct rlimit, saved_rlimit, 1);
1148 if (!rl)
1149 return log_oom();
1150
1151 arg_default_rlimit[RLIMIT_NOFILE] = rl;
1152 }
1153
6385cb31
CB		 1154 /* Get current RLIMIT_NOFILE maximum compiled into the kernel. */
1155 r = read_one_line_file("/proc/sys/fs/nr_open", &nr_open);
d387cfdd 1156 if (r >= 0)
6385cb31
CB		 1157 r = safe_atoi(nr_open, &min_max);
1158 /* If we fail, fallback to the hard-coded kernel limit of 1024 * 1024. */
1159 if (r < 0)
1160 min_max = 1024 * 1024;
1161
4096d6f5 1162 /* Bump up the resource limit for ourselves substantially */
6385cb31 1163 nl.rlim_cur = nl.rlim_max = min_max;
4096d6f5 1164 r = setrlimit_closest(RLIMIT_NOFILE, &nl);
23bbb0de 1165 if (r < 0)
3ce40911 1166 return log_warning_errno(r, "Setting RLIMIT_NOFILE failed, ignoring: %m");
4096d6f5
LP		 1167
1168 return 0;
1169}
1170
fb3ae275
LP		 1171static int bump_rlimit_memlock(struct rlimit *saved_rlimit) {
1172 int r;
1173
1174 assert(saved_rlimit);
1175 assert(getuid() == 0);
1176
1177 /* BPF_MAP_TYPE_LPM_TRIE bpf maps are charged against RLIMIT_MEMLOCK, even though we have CAP_IPC_LOCK which
1178 * should normally disable such checks. We need them to implement IPAccessAllow= and IPAccessDeny=, hence let's
1179 * bump the value high enough for the root user. */
1180
1181 if (getrlimit(RLIMIT_MEMLOCK, saved_rlimit) < 0)
1182 return log_warning_errno(errno, "Reading RLIMIT_MEMLOCK failed, ignoring: %m");
1183
1184 r = setrlimit_closest(RLIMIT_MEMLOCK, &RLIMIT_MAKE_CONST(1024ULL*1024ULL*16ULL));
1185 if (r < 0)
1186 return log_warning_errno(r, "Setting RLIMIT_MEMLOCK failed, ignoring: %m");
1187
1188 return 0;
1189}
1190
80758717 1191static void test_usr(void) {
80758717 1192
ed1c99fc 1193 /* Check that /usr is not a separate fs */
80758717 1194
871c44a7
LP		 1195 if (dir_is_empty("/usr") <= 0)
1196 return;
1197
8b173b5e 1198 log_warning("/usr appears to be on its own filesystem and is not already mounted. This is not a supported setup. "
871c44a7
LP		 1199 "Some things will probably break (sometimes even silently) in mysterious ways. "
1200 "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
1201}
1202
d3b1c508 1203static int enforce_syscall_archs(Set *archs) {
349cc4a5 1204#if HAVE_SECCOMP
d3b1c508
LP		 1205 int r;
1206
83f12b27
FS		 1207 if (!is_seccomp_available())
1208 return 0;
1209
469830d1 1210 r = seccomp_restrict_archs(arg_syscall_archs);
d3b1c508 1211 if (r < 0)
469830d1 1212 return log_error_errno(r, "Failed to enforce system call architecture restrication: %m");
d3b1c508 1213#endif
469830d1 1214 return 0;
d3b1c508
LP		 1215}
1216
b6e2f329
LP		 1217static int status_welcome(void) {
1218 _cleanup_free_ char *pretty_name = NULL, *ansi_color = NULL;
1219 int r;
1220
fd8c85c6
LP		 1221 if (arg_show_status <= 0)
1222 return 0;
1223
d58ad743
LP		 1224 r = parse_os_release(NULL,
1225 "PRETTY_NAME", &pretty_name,
1226 "ANSI_COLOR", &ansi_color,
1227 NULL);
1228 if (r < 0)
1229 log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r,
1230 "Failed to read os-release file, ignoring: %m");
b6e2f329 1231
dc9b5816
ZJS		 1232 if (log_get_show_color())
1233 return status_printf(NULL, false, false,
1234 "\nWelcome to \x1B[%sm%s\x1B[0m!\n",
1235 isempty(ansi_color) ? "1" : ansi_color,
1236 isempty(pretty_name) ? "Linux" : pretty_name);
1237 else
1238 return status_printf(NULL, false, false,
1239 "\nWelcome to %s!\n",
1240 isempty(pretty_name) ? "Linux" : pretty_name);
b6e2f329
LP		 1241}
1242
fdd25311
LP		 1243static int write_container_id(void) {
1244 const char *c;
19854865 1245 int r;
fdd25311
LP		 1246
1247 c = getenv("container");
1248 if (isempty(c))
1249 return 0;
1250
8612da97
LP		 1251 RUN_WITH_UMASK(0022)
1252 r = write_string_file("/run/systemd/container", c, WRITE_STRING_FILE_CREATE);
19854865 1253 if (r < 0)
f1f849b0 1254 return log_warning_errno(r, "Failed to write /run/systemd/container, ignoring: %m");
19854865
LP		 1255
1256 return 1;
1257}
1258
1259static int bump_unix_max_dgram_qlen(void) {
1260 _cleanup_free_ char *qlen = NULL;
1261 unsigned long v;
1262 int r;
1263
1264 /* Let's bump the net.unix.max_dgram_qlen sysctl. The kernel
1265 * default of 16 is simply too low. We set the value really
1266 * really early during boot, so that it is actually applied to
1267 * all our sockets, including the $NOTIFY_SOCKET one. */
1268
1269 r = read_one_line_file("/proc/sys/net/unix/max_dgram_qlen", &qlen);
1270 if (r < 0)
1271 return log_warning_errno(r, "Failed to read AF_UNIX datagram queue length, ignoring: %m");
1272
1273 r = safe_atolu(qlen, &v);
1274 if (r < 0)
1275 return log_warning_errno(r, "Failed to parse AF_UNIX datagram queue length, ignoring: %m");
1276
1277 if (v >= DEFAULT_UNIX_MAX_DGRAM_QLEN)
1278 return 0;
1279
1280 qlen = mfree(qlen);
1281 if (asprintf(&qlen, "%lu\n", DEFAULT_UNIX_MAX_DGRAM_QLEN) < 0)
1282 return log_oom();
1283
1284 r = write_string_file("/proc/sys/net/unix/max_dgram_qlen", qlen, 0);
1285 if (r < 0)
1286 return log_full_errno(IN_SET(r, -EROFS, -EPERM, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
1287 "Failed to bump AF_UNIX datagram queue length, ignoring: %m");
1288
1289 return 1;
fdd25311
LP		 1290}
1291
32391275
FB		 1292static int fixup_environment(void) {
1293 _cleanup_free_ char *term = NULL;
4dc63c4b 1294 const char *t;
32391275
FB		 1295 int r;
1296
43db615b
LP		 1297 /* Only fix up the environment when we are started as PID 1 */
1298 if (getpid_cached() != 1)
1299 return 0;
1300
1301 /* We expect the environment to be set correctly if run inside a container. */
84af7821
LP		 1302 if (detect_container() > 0)
1303 return 0;
1304
43db615b
LP		 1305 /* When started as PID1, the kernel uses /dev/console for our stdios and uses TERM=linux whatever the backend
1306 * device used by the console. We try to make a better guess here since some consoles might not have support
1307 * for color mode for example.
32391275 1308 *
43db615b 1309 * However if TERM was configured through the kernel command line then leave it alone. */
1d84ad94 1310 r = proc_cmdline_get_key("TERM", 0, &term);
32391275
FB		 1311 if (r < 0)
1312 return r;
32391275 1313
4dc63c4b
LP		 1314 t = term ?: default_term_for_tty("/dev/console");
1315
1316 if (setenv("TERM", t, 1) < 0)
32391275
FB		 1317 return -errno;
1318
1319 return 0;
1320}
1321
6808a0bc
LP		 1322static void redirect_telinit(int argc, char *argv[]) {
1323
1324 /* This is compatibility support for SysV, where calling init as a user is identical to telinit. */
1325
1326#if HAVE_SYSV_COMPAT
1327 if (getpid_cached() == 1)
1328 return;
1329
1330 if (!strstr(program_invocation_short_name, "init"))
1331 return;
1332
1333 execv(SYSTEMCTL_BINARY_PATH, argv);
1334 log_error_errno(errno, "Failed to exec " SYSTEMCTL_BINARY_PATH ": %m");
a45d7127 1335 exit(EXIT_FAILURE);
6808a0bc
LP		 1336#endif
1337}
1338
4a36297c
LP		 1339static int become_shutdown(
1340 const char *shutdown_verb,
7eb35049 1341 int retval) {
4a36297c
LP		 1342
1343 char log_level[DECIMAL_STR_MAX(int) + 1],
e73c54b8
JK		 1344 exit_code[DECIMAL_STR_MAX(uint8_t) + 1],
1345 timeout[DECIMAL_STR_MAX(usec_t) + 1];
4a36297c 1346
e73c54b8 1347 const char* command_line[13] = {
4a36297c
LP		 1348 SYSTEMD_SHUTDOWN_BINARY_PATH,
1349 shutdown_verb,
e73c54b8 1350 "--timeout", timeout,
4a36297c
LP		 1351 "--log-level", log_level,
1352 "--log-target",
1353 };
1354
1355 _cleanup_strv_free_ char **env_block = NULL;
e73c54b8 1356 size_t pos = 7;
4a36297c
LP		 1357 int r;
1358
7eb35049 1359 assert(shutdown_verb);
234519ae 1360 assert(!command_line[pos]);
4a36297c
LP		 1361 env_block = strv_copy(environ);
1362
1363 xsprintf(log_level, "%d", log_get_max_level());
e73c54b8 1364 xsprintf(timeout, "%" PRI_USEC "us", arg_default_timeout_stop_usec);
4a36297c
LP		 1365
1366 switch (log_get_target()) {
1367
1368 case LOG_TARGET_KMSG:
1369 case LOG_TARGET_JOURNAL_OR_KMSG:
1370 case LOG_TARGET_SYSLOG_OR_KMSG:
1371 command_line[pos++] = "kmsg";
1372 break;
1373
1374 case LOG_TARGET_NULL:
1375 command_line[pos++] = "null";
1376 break;
1377
1378 case LOG_TARGET_CONSOLE:
1379 default:
1380 command_line[pos++] = "console";
1381 break;
1382 };
1383
1384 if (log_get_show_color())
1385 command_line[pos++] = "--log-color";
1386
1387 if (log_get_show_location())
1388 command_line[pos++] = "--log-location";
1389
1390 if (streq(shutdown_verb, "exit")) {
1391 command_line[pos++] = "--exit-code";
1392 command_line[pos++] = exit_code;
1393 xsprintf(exit_code, "%d", retval);
1394 }
1395
1396 assert(pos < ELEMENTSOF(command_line));
1397
7eb35049
LP		 1398 if (streq(shutdown_verb, "reboot") &&
1399 arg_shutdown_watchdog > 0 &&
1400 arg_shutdown_watchdog != USEC_INFINITY) {
1401
4a36297c
LP		 1402 char *e;
1403
1404 /* If we reboot let's set the shutdown
1405 * watchdog and tell the shutdown binary to
1406 * repeatedly ping it */
1407 r = watchdog_set_timeout(&arg_shutdown_watchdog);
1408 watchdog_close(r < 0);
1409
1410 /* Tell the binary how often to ping, ignore failure */
1411 if (asprintf(&e, "WATCHDOG_USEC="USEC_FMT, arg_shutdown_watchdog) > 0)
8a2c1fbf
EJ		 1412 (void) strv_consume(&env_block, e);
1413
1414 if (arg_watchdog_device &&
1415 asprintf(&e, "WATCHDOG_DEVICE=%s", arg_watchdog_device) > 0)
1416 (void) strv_consume(&env_block, e);
4a36297c
LP		 1417 } else
1418 watchdog_close(true);
1419
1420 /* Avoid the creation of new processes forked by the
1421 * kernel; at this point, we will not listen to the
1422 * signals anyway */
1423 if (detect_container() <= 0)
1424 (void) cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER);
1425
1426 execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block);
1427 return -errno;
1428}
1429
e839bafd
LP		 1430static void initialize_clock(void) {
1431 int r;
1432
1433 if (clock_is_localtime(NULL) > 0) {
1434 int min;
1435
1436 /*
1437 * The very first call of settimeofday() also does a time warp in the kernel.
1438 *
1439 * In the rtc-in-local time mode, we set the kernel's timezone, and rely on external tools to take care
1440 * of maintaining the RTC and do all adjustments. This matches the behavior of Windows, which leaves
1441 * the RTC alone if the registry tells that the RTC runs in UTC.
1442 */
1443 r = clock_set_timezone(&min);
1444 if (r < 0)
1445 log_error_errno(r, "Failed to apply local time delta, ignoring: %m");
1446 else
1447 log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min);
1448
1449 } else if (!in_initrd()) {
1450 /*
1451 * Do a dummy very first call to seal the kernel's time warp magic.
1452 *
1453 * Do not call this from inside the initrd. The initrd might not carry /etc/adjtime with LOCAL, but the
1454 * real system could be set up that way. In such case, we need to delay the time-warp or the sealing
1455 * until we reach the real system.
1456 *
1457 * Do no set the kernel's timezone. The concept of local time cannot be supported reliably, the time
1458 * will jump or be incorrect at every daylight saving time change. All kernel local time concepts will
1459 * be treated as UTC that way.
1460 */
1461 (void) clock_reset_timewarp();
1462 }
1463
1464 r = clock_apply_epoch();
1465 if (r < 0)
1466 log_error_errno(r, "Current system time is before build time, but cannot correct: %m");
1467 else if (r > 0)
1468 log_info("System time before build time, advancing clock.");
1469}
1470
1e41242e 1471static void initialize_coredump(bool skip_setup) {
752bcb77 1472#if ENABLE_COREDUMP
1e41242e
LP		 1473 if (getpid_cached() != 1)
1474 return;
1475
1476 /* Don't limit the core dump size, so that coredump handlers such as systemd-coredump (which honour the limit)
1477 * will process core dumps for system services by default. */
1478 if (setrlimit(RLIMIT_CORE, &RLIMIT_MAKE_CONST(RLIM_INFINITY)) < 0)
1479 log_warning_errno(errno, "Failed to set RLIMIT_CORE: %m");
1480
1481 /* But at the same time, turn off the core_pattern logic by default, so that no coredumps are stored
1482 * until the systemd-coredump tool is enabled via sysctl. */
1483 if (!skip_setup)
e557b1a6 1484 disable_coredumps();
752bcb77 1485#endif
1e41242e
LP		 1486}
1487
3c7878f9
LP		 1488static void do_reexecute(
1489 int argc,
1490 char *argv[],
1491 const struct rlimit *saved_rlimit_nofile,
1492 const struct rlimit *saved_rlimit_memlock,
1493 FDSet *fds,
1494 const char *switch_root_dir,
1495 const char *switch_root_init,
1496 const char **ret_error_message) {
1497
1498 unsigned i, j, args_size;
1499 const char **args;
1500 int r;
1501
1502 assert(saved_rlimit_nofile);
1503 assert(saved_rlimit_memlock);
1504 assert(ret_error_message);
1505
1506 /* Close and disarm the watchdog, so that the new instance can reinitialize it, but doesn't get rebooted while
1507 * we do that */
1508 watchdog_close(true);
1509
1510 /* Reset the RLIMIT_NOFILE to the kernel default, so that the new systemd can pass the kernel default to its
1511 * child processes */
1512
1513 if (saved_rlimit_nofile->rlim_cur > 0)
1514 (void) setrlimit(RLIMIT_NOFILE, saved_rlimit_nofile);
1515 if (saved_rlimit_memlock->rlim_cur != (rlim_t) -1)
1516 (void) setrlimit(RLIMIT_MEMLOCK, saved_rlimit_memlock);
1517
1518 if (switch_root_dir) {
1519 /* Kill all remaining processes from the initrd, but don't wait for them, so that we can handle the
1520 * SIGCHLD for them after deserializing. */
e73c54b8 1521 broadcast_signal(SIGTERM, false, true, arg_default_timeout_stop_usec);
3c7878f9
LP		 1522
1523 /* And switch root with MS_MOVE, because we remove the old directory afterwards and detach it. */
1524 r = switch_root(switch_root_dir, "/mnt", true, MS_MOVE);
1525 if (r < 0)
1526 log_error_errno(r, "Failed to switch root, trying to continue: %m");
1527 }
1528
1529 args_size = MAX(6, argc+1);
1530 args = newa(const char*, args_size);
1531
1532 if (!switch_root_init) {
1533 char sfd[DECIMAL_STR_MAX(int) + 1];
1534
1535 /* First try to spawn ourselves with the right path, and with full serialization. We do this only if
1536 * the user didn't specify an explicit init to spawn. */
1537
1538 assert(arg_serialization);
1539 assert(fds);
1540
1541 xsprintf(sfd, "%i", fileno(arg_serialization));
1542
1543 i = 0;
1544 args[i++] = SYSTEMD_BINARY_PATH;
1545 if (switch_root_dir)
1546 args[i++] = "--switched-root";
1547 args[i++] = arg_system ? "--system" : "--user";
1548 args[i++] = "--deserialize";
1549 args[i++] = sfd;
1550 args[i++] = NULL;
1551
1552 assert(i <= args_size);
1553
1554 /*
1555 * We want valgrind to print its memory usage summary before reexecution. Valgrind won't do this is on
1556 * its own on exec(), but it will do it on exit(). Hence, to ensure we get a summary here, fork() off
1557 * a child, let it exit() cleanly, so that it prints the summary, and wait() for it in the parent,
1558 * before proceeding into the exec().
1559 */
1560 valgrind_summary_hack();
1561
1562 (void) execv(args[0], (char* const*) args);
1563 log_debug_errno(errno, "Failed to execute our own binary, trying fallback: %m");
1564 }
1565
1566 /* Try the fallback, if there is any, without any serialization. We pass the original argv[] and envp[]. (Well,
1567 * modulo the ordering changes due to getopt() in argv[], and some cleanups in envp[], but let's hope that
1568 * doesn't matter.) */
1569
1570 arg_serialization = safe_fclose(arg_serialization);
1571 fds = fdset_free(fds);
1572
1573 /* Reopen the console */
1574 (void) make_console_stdio();
1575
1576 for (j = 1, i = 1; j < (unsigned) argc; j++)
1577 args[i++] = argv[j];
1578 args[i++] = NULL;
1579 assert(i <= args_size);
1580
1581 /* Reenable any blocked signals, especially important if we switch from initial ramdisk to init=... */
1582 (void) reset_all_signal_handlers();
1583 (void) reset_signal_mask();
1584
1585 if (switch_root_init) {
1586 args[0] = switch_root_init;
1587 (void) execv(args[0], (char* const*) args);
1588 log_warning_errno(errno, "Failed to execute configured init, trying fallback: %m");
1589 }
1590
1591 args[0] = "/sbin/init";
1592 (void) execv(args[0], (char* const*) args);
1593 r = -errno;
1594
1595 manager_status_printf(NULL, STATUS_TYPE_EMERGENCY,
1596 ANSI_HIGHLIGHT_RED " !! " ANSI_NORMAL,
1597 "Failed to execute /sbin/init");
1598
1599 if (r == -ENOENT) {
1600 log_warning("No /sbin/init, trying fallback");
1601
1602 args[0] = "/bin/sh";
1603 args[1] = NULL;
1604 (void) execv(args[0], (char* const*) args);
1605 log_error_errno(errno, "Failed to execute /bin/sh, giving up: %m");
1606 } else
1607 log_warning_errno(r, "Failed to execute /sbin/init, giving up: %m");
1608
1609 *ret_error_message = "Failed to execute fallback shell";
1610}
1611
7eb35049
LP		 1612static int invoke_main_loop(
1613 Manager *m,
1614 bool *ret_reexecute,
1615 int *ret_retval, /* Return parameters relevant for shutting down */
1616 const char **ret_shutdown_verb, /* … */
1617 FDSet **ret_fds, /* Return parameters for reexecuting */
1618 char **ret_switch_root_dir, /* … */
1619 char **ret_switch_root_init, /* … */
1620 const char **ret_error_message) {
1621
1622 int r;
1623
1624 assert(m);
1625 assert(ret_reexecute);
1626 assert(ret_retval);
1627 assert(ret_shutdown_verb);
1628 assert(ret_fds);
1629 assert(ret_switch_root_dir);
1630 assert(ret_switch_root_init);
1631 assert(ret_error_message);
1632
1633 for (;;) {
1634 r = manager_loop(m);
1635 if (r < 0) {
1636 *ret_error_message = "Failed to run main loop";
1637 return log_emergency_errno(r, "Failed to run main loop: %m");
1638 }
1639
1640 switch (m->exit_code) {
1641
1642 case MANAGER_RELOAD:
1643 log_info("Reloading.");
1644
1645 r = parse_config_file();
1646 if (r < 0)
1647 log_warning_errno(r, "Failed to parse config file, ignoring: %m");
1648
1649 set_manager_defaults(m);
1650
1651 r = manager_reload(m);
1652 if (r < 0)
1653 log_warning_errno(r, "Failed to reload, ignoring: %m");
1654
1655 break;
1656
1657 case MANAGER_REEXECUTE:
1658
1659 r = prepare_reexecute(m, &arg_serialization, ret_fds, false);
1660 if (r < 0) {
1661 *ret_error_message = "Failed to prepare for reexecution";
1662 return r;
1663 }
1664
1665 log_notice("Reexecuting.");
1666
1667 *ret_reexecute = true;
1668 *ret_retval = EXIT_SUCCESS;
1669 *ret_shutdown_verb = NULL;
1670 *ret_switch_root_dir = *ret_switch_root_init = NULL;
1671
1672 return 0;
1673
1674 case MANAGER_SWITCH_ROOT:
1675 if (!m->switch_root_init) {
1676 r = prepare_reexecute(m, &arg_serialization, ret_fds, true);
1677 if (r < 0) {
1678 *ret_error_message = "Failed to prepare for reexecution";
1679 return r;
1680 }
1681 } else
1682 *ret_fds = NULL;
1683
1684 log_notice("Switching root.");
1685
1686 *ret_reexecute = true;
1687 *ret_retval = EXIT_SUCCESS;
1688 *ret_shutdown_verb = NULL;
1689
1690 /* Steal the switch root parameters */
1691 *ret_switch_root_dir = m->switch_root;
1692 *ret_switch_root_init = m->switch_root_init;
1693 m->switch_root = m->switch_root_init = NULL;
1694
1695 return 0;
1696
1697 case MANAGER_EXIT:
1698
1699 if (MANAGER_IS_USER(m)) {
1700 log_debug("Exit.");
1701
1702 *ret_reexecute = false;
1703 *ret_retval = m->return_value;
1704 *ret_shutdown_verb = NULL;
1705 *ret_fds = NULL;
1706 *ret_switch_root_dir = *ret_switch_root_init = NULL;
1707
1708 return 0;
1709 }
1710
1711 _fallthrough_;
1712 case MANAGER_REBOOT:
1713 case MANAGER_POWEROFF:
1714 case MANAGER_HALT:
1715 case MANAGER_KEXEC: {
1716 static const char * const table[_MANAGER_EXIT_CODE_MAX] = {
1717 [MANAGER_EXIT] = "exit",
1718 [MANAGER_REBOOT] = "reboot",
1719 [MANAGER_POWEROFF] = "poweroff",
1720 [MANAGER_HALT] = "halt",
1721 [MANAGER_KEXEC] = "kexec"
1722 };
1723
1724 log_notice("Shutting down.");
1725
1726 *ret_reexecute = false;
1727 *ret_retval = m->return_value;
1728 assert_se(*ret_shutdown_verb = table[m->exit_code]);
1729 *ret_fds = NULL;
1730 *ret_switch_root_dir = *ret_switch_root_init = NULL;
1731
1732 return 0;
1733 }
1734
1735 default:
1736 assert_not_reached("Unknown exit code.");
1737 }
1738 }
1739}
1740
31aef7ff
LP		 1741static void log_execution_mode(bool *ret_first_boot) {
1742 assert(ret_first_boot);
1743
1744 if (arg_system) {
1745 int v;
1746
1747 log_info(PACKAGE_STRING " running in %ssystem mode. (" SYSTEMD_FEATURES ")",
1748 arg_action == ACTION_TEST ? "test " : "" );
1749
1750 v = detect_virtualization();
1751 if (v > 0)
1752 log_info("Detected virtualization %s.", virtualization_to_string(v));
1753
1754 log_info("Detected architecture %s.", architecture_to_string(uname_architecture()));
1755
1756 if (in_initrd()) {
1757 *ret_first_boot = false;
1758 log_info("Running in initial RAM disk.");
1759 } else {
1760 /* Let's check whether we are in first boot, i.e. whether /etc is still unpopulated. We use
1761 * /etc/machine-id as flag file, for this: if it exists we assume /etc is populated, if it
1762 * doesn't it's unpopulated. This allows container managers and installers to provision a
1763 * couple of files already. If the container manager wants to provision the machine ID itself
1764 * it should pass $container_uuid to PID 1. */
1765
1766 *ret_first_boot = access("/etc/machine-id", F_OK) < 0;
1767 if (*ret_first_boot)
1768 log_info("Running with unpopulated /etc.");
1769 }
1770 } else {
b9e90f3a
LP		 1771 if (DEBUG_LOGGING) {
1772 _cleanup_free_ char *t;
31aef7ff 1773
b9e90f3a
LP		 1774 t = uid_to_name(getuid());
1775 log_debug(PACKAGE_STRING " running in %suser mode for user " UID_FMT "/%s. (" SYSTEMD_FEATURES ")",
1776 arg_action == ACTION_TEST ? " test" : "", getuid(), strna(t));
1777 }
31aef7ff
LP		 1778
1779 *ret_first_boot = false;
1780 }
1781}
1782
5afbaa36
LP		 1783static int initialize_runtime(
1784 bool skip_setup,
1785 struct rlimit *saved_rlimit_nofile,
1786 struct rlimit *saved_rlimit_memlock,
1787 const char **ret_error_message) {
1788
1789 int r;
1790
1791 assert(ret_error_message);
1792
1793 /* Sets up various runtime parameters. Many of these initializations are conditionalized:
1794 *
1795 * - Some only apply to --system instances
1796 * - Some only apply to --user instances
1797 * - Some only apply when we first start up, but not when we reexecute
1798 */
1799
2d776038
LP		 1800 if (arg_action != ACTION_RUN)
1801 return 0;
1802
3c3c6cb9
LP		 1803 if (arg_system) {
1804 /* Make sure we leave a core dump without panicing the kernel. */
1805 install_crash_handler();
5afbaa36 1806
3c3c6cb9
LP		 1807 if (!skip_setup) {
1808 r = mount_cgroup_controllers(arg_join_controllers);
1809 if (r < 0) {
1810 *ret_error_message = "Failed to mount cgroup hierarchies";
1811 return r;
1812 }
1813
1814 status_welcome();
1815 hostname_setup();
1816 machine_id_setup(NULL, arg_machine_id, NULL);
1817 loopback_setup();
1818 bump_unix_max_dgram_qlen();
1819 test_usr();
1820 write_container_id();
1821 }
8a2c1fbf 1822
3c3c6cb9
LP		 1823 if (arg_watchdog_device) {
1824 r = watchdog_set_device(arg_watchdog_device);
1825 if (r < 0)
1826 log_warning_errno(r, "Failed to set watchdog device to %s, ignoring: %m", arg_watchdog_device);
1827 }
1828
1829 if (arg_runtime_watchdog > 0 && arg_runtime_watchdog != USEC_INFINITY)
1830 watchdog_set_timeout(&arg_runtime_watchdog);
1831 }
5afbaa36
LP		 1832
1833 if (arg_timer_slack_nsec != NSEC_INFINITY)
1834 if (prctl(PR_SET_TIMERSLACK, arg_timer_slack_nsec) < 0)
3a671cd1 1835 log_warning_errno(errno, "Failed to adjust timer slack, ignoring: %m");
5afbaa36
LP		 1836
1837 if (arg_system && !cap_test_all(arg_capability_bounding_set)) {
1838 r = capability_bounding_set_drop_usermode(arg_capability_bounding_set);
1839 if (r < 0) {
1840 *ret_error_message = "Failed to drop capability bounding set of usermode helpers";
1841 return log_emergency_errno(r, "Failed to drop capability bounding set of usermode helpers: %m");
1842 }
1843
1844 r = capability_bounding_set_drop(arg_capability_bounding_set, true);
1845 if (r < 0) {
1846 *ret_error_message = "Failed to drop capability bounding set";
1847 return log_emergency_errno(r, "Failed to drop capability bounding set: %m");
1848 }
1849 }
1850
39362f6f
JB		 1851 if (arg_system && arg_no_new_privs) {
1852 if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) < 0) {
1853 *ret_error_message = "Failed to disable new privileges";
1854 return log_emergency_errno(errno, "Failed to disable new privileges: %m");
1855 }
1856 }
1857
5afbaa36
LP		 1858 if (arg_syscall_archs) {
1859 r = enforce_syscall_archs(arg_syscall_archs);
1860 if (r < 0) {
1861 *ret_error_message = "Failed to set syscall architectures";
1862 return r;
1863 }
1864 }
1865
1866 if (!arg_system)
1867 /* Become reaper of our children */
1868 if (prctl(PR_SET_CHILD_SUBREAPER, 1) < 0)
1869 log_warning_errno(errno, "Failed to make us a subreaper: %m");
1870
1871 if (arg_system) {
1872 /* Bump up RLIMIT_NOFILE for systemd itself */
1873 (void) bump_rlimit_nofile(saved_rlimit_nofile);
1874 (void) bump_rlimit_memlock(saved_rlimit_memlock);
1875 }
1876
1877 return 0;
1878}
1879
6acca5fc
LP		 1880static int do_queue_default_job(
1881 Manager *m,
1882 const char **ret_error_message) {
1883
1884 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1885 Job *default_unit_job;
1886 Unit *target = NULL;
1887 int r;
1888
1889 log_debug("Activating default unit: %s", arg_default_unit);
1890
4109ede7
ZJS		 1891 r = manager_load_startable_unit_or_warn(m, arg_default_unit, NULL, &target);
1892 if (r < 0) {
1893 log_info("Falling back to rescue target: " SPECIAL_RESCUE_TARGET);
6acca5fc 1894
4109ede7 1895 r = manager_load_startable_unit_or_warn(m, SPECIAL_RESCUE_TARGET, NULL, &target);
6acca5fc 1896 if (r < 0) {
4109ede7
ZJS		 1897 *ret_error_message = r == -ERFKILL ? "Rescue target masked"
1898 : "Failed to load rescue target";
1899 return r;
6acca5fc
LP		 1900 }
1901 }
1902
1903 assert(target->load_state == UNIT_LOADED);
1904
1905 r = manager_add_job(m, JOB_START, target, JOB_ISOLATE, &error, &default_unit_job);
1906 if (r == -EPERM) {
1907 log_debug_errno(r, "Default target could not be isolated, starting instead: %s", bus_error_message(&error, r));
1908
1909 sd_bus_error_free(&error);
1910
1911 r = manager_add_job(m, JOB_START, target, JOB_REPLACE, &error, &default_unit_job);
1912 if (r < 0) {
1913 *ret_error_message = "Failed to start default target";
1914 return log_emergency_errno(r, "Failed to start default target: %s", bus_error_message(&error, r));
1915 }
1916
1917 } else if (r < 0) {
1918 *ret_error_message = "Failed to isolate default target";
1919 return log_emergency_errno(r, "Failed to isolate default target: %s", bus_error_message(&error, r));
1920 }
1921
1922 m->default_unit_job_id = default_unit_job->id;
1923
1924 return 0;
1925}
1926
970777b5
LP		 1927static void free_arguments(void) {
1928 size_t j;
1929
1930 /* Frees all arg_* variables, with the exception of arg_serialization */
1931
1932 for (j = 0; j < ELEMENTSOF(arg_default_rlimit); j++)
1933 arg_default_rlimit[j] = mfree(arg_default_rlimit[j]);
1934
1935 arg_default_unit = mfree(arg_default_unit);
1936 arg_confirm_spawn = mfree(arg_confirm_spawn);
1937 arg_join_controllers = strv_free_free(arg_join_controllers);
1938 arg_default_environment = strv_free(arg_default_environment);
1939 arg_syscall_archs = set_free(arg_syscall_archs);
1940}
1941
97d1fb94
LP		 1942static int load_configuration(int argc, char **argv, const char **ret_error_message) {
1943 int r;
1944
1945 assert(ret_error_message);
1946
1947 arg_default_tasks_max = system_tasks_max_scale(DEFAULT_TASKS_MAX_PERCENTAGE, 100U);
1948
1949 r = parse_config_file();
1950 if (r < 0) {
1951 *ret_error_message = "Failed to parse config file";
1952 return r;
1953 }
1954
1955 if (arg_system) {
1956 r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, 0);
1957 if (r < 0)
1958 log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
1959 }
1960
1961 /* Note that this also parses bits from the kernel command line, including "debug". */
1962 log_parse_environment();
1963
1964 r = parse_argv(argc, argv);
1965 if (r < 0) {
1966 *ret_error_message = "Failed to parse commandline arguments";
1967 return r;
1968 }
1969
1970 /* Initialize default unit */
1971 if (!arg_default_unit) {
1972 arg_default_unit = strdup(SPECIAL_DEFAULT_TARGET);
1973 if (!arg_default_unit) {
1974 *ret_error_message = "Failed to set default unit";
1975 return log_oom();
1976 }
1977 }
1978
db33214b
LP		 1979 /* Initialize the show status setting if it hasn't been set explicitly yet */
1980 if (arg_show_status == _SHOW_STATUS_UNSET)
1981 arg_show_status = SHOW_STATUS_YES;
1982
97d1fb94
LP		 1983 return 0;
1984}
1985
b0d7c989
LP		 1986static int safety_checks(void) {
1987
febf46a4
LP		 1988 if (getpid_cached() == 1 &&
1989 arg_action != ACTION_RUN) {
1990 log_error("Unsupported execution mode while PID 1.");
1991 return -EPERM;
1992 }
1993
1994 if (getpid_cached() == 1 &&
1995 !arg_system) {
1996 log_error("Can't run --user mode as PID 1.");
1997 return -EPERM;
1998 }
1999
2000 if (arg_action == ACTION_RUN &&
2001 arg_system &&
2002 getpid_cached() != 1) {
2003 log_error("Can't run system mode unless PID 1.");
2004 return -EPERM;
2005 }
2006
b0d7c989
LP		 2007 if (arg_action == ACTION_TEST &&
2008 geteuid() == 0) {
2009 log_error("Don't run test mode as root.");
2010 return -EPERM;
2011 }
2012
2013 if (!arg_system &&
2014 arg_action == ACTION_RUN &&
2015 sd_booted() <= 0) {
2016 log_error("Trying to run as user instance, but the system has not been booted with systemd.");
2017 return -EOPNOTSUPP;
2018 }
2019
2020 if (!arg_system &&
2021 arg_action == ACTION_RUN &&
2022 !getenv("XDG_RUNTIME_DIR")) {
2023 log_error("Trying to run as user instance, but $XDG_RUNTIME_DIR is not set.");
2024 return -EUNATCH;
2025 }
2026
2027 if (arg_system &&
2028 arg_action == ACTION_RUN &&
2029 running_in_chroot() > 0) {
2030 log_error("Cannot be run in a chroot() environment.");
2031 return -EOPNOTSUPP;
2032 }
2033
2034 return 0;
2035}
2036
74da609f
LP		 2037static int initialize_security(
2038 bool *loaded_policy,
2039 dual_timestamp *security_start_timestamp,
2040 dual_timestamp *security_finish_timestamp,
2041 const char **ret_error_message) {
2042
2043 int r;
2044
2045 assert(loaded_policy);
2046 assert(security_start_timestamp);
2047 assert(security_finish_timestamp);
2048 assert(ret_error_message);
2049
2050 dual_timestamp_get(security_start_timestamp);
2051
97149f40 2052 r = mac_selinux_setup(loaded_policy);
74da609f
LP		 2053 if (r < 0) {
2054 *ret_error_message = "Failed to load SELinux policy";
2055 return r;
2056 }
2057
2058 r = mac_smack_setup(loaded_policy);
2059 if (r < 0) {
2060 *ret_error_message = "Failed to load SMACK policy";
2061 return r;
2062 }
2063
2064 r = ima_setup();
2065 if (r < 0) {
2066 *ret_error_message = "Failed to load IMA policy";
2067 return r;
2068 }
2069
2070 dual_timestamp_get(security_finish_timestamp);
2071 return 0;
2072}
2073
263162da
LP		 2074static void test_summary(Manager *m) {
2075 assert(m);
2076
2077 printf("-> By units:\n");
2078 manager_dump_units(m, stdout, "\t");
2079
2080 printf("-> By jobs:\n");
2081 manager_dump_jobs(m, stdout, "\t");
2082}
2083
efeb853f
LP		 2084static int collect_fds(FDSet **ret_fds, const char **ret_error_message) {
2085 int r;
2086
2087 assert(ret_fds);
2088 assert(ret_error_message);
2089
2090 r = fdset_new_fill(ret_fds);
2091 if (r < 0) {
2092 *ret_error_message = "Failed to allocate fd set";
2093 return log_emergency_errno(r, "Failed to allocate fd set: %m");
2094 }
2095
2096 fdset_cloexec(*ret_fds, true);
2097
2098 if (arg_serialization)
2099 assert_se(fdset_remove(*ret_fds, fileno(arg_serialization)) >= 0);
2100
2101 return 0;
2102}
2103
2e51b31c
LP		 2104static void setup_console_terminal(bool skip_setup) {
2105
2106 if (!arg_system)
2107 return;
2108
2109 /* Become a session leader if we aren't one yet. */
2110 (void) setsid();
2111
2112 /* If we are init, we connect stdin/stdout/stderr to /dev/null and make sure we don't have a controlling
2113 * tty. */
2114 (void) release_terminal();
2115
2116 /* Reset the console, but only if this is really init and we are freshly booted */
2117 if (getpid_cached() == 1 && !skip_setup)
2118 (void) console_setup();
2119}
2120
aa40ff07
LP		 2121static bool early_skip_setup_check(int argc, char *argv[]) {
2122 bool found_deserialize = false;
2123 int i;
2124
2125 /* Determine if this is a reexecution or normal bootup. We do the full command line parsing much later, so
2126 * let's just have a quick peek here. Note that if we have switched root, do all the special setup things
2127 * anyway, even if in that case we also do deserialization. */
2128
2129 for (i = 1; i < argc; i++) {
2130
2131 if (streq(argv[i], "--switched-root"))
2132 return false; /* If we switched root, don't skip the setup. */
2133 else if (streq(argv[i], "--deserialize"))
2134 found_deserialize = true;
2135 }
2136
2137 return found_deserialize; /* When we are deserializing, then we are reexecuting, hence avoid the extensive setup */
2138}
2139
60918275 2140int main(int argc, char *argv[]) {
625e8690
LP		 2141
2142 dual_timestamp initrd_timestamp = DUAL_TIMESTAMP_NULL, userspace_timestamp = DUAL_TIMESTAMP_NULL, kernel_timestamp = DUAL_TIMESTAMP_NULL,
2143 security_start_timestamp = DUAL_TIMESTAMP_NULL, security_finish_timestamp = DUAL_TIMESTAMP_NULL;
2144 struct rlimit saved_rlimit_nofile = RLIMIT_MAKE_CONST(0), saved_rlimit_memlock = RLIMIT_MAKE_CONST((rlim_t) -1);
2145 bool skip_setup, loaded_policy = false, queue_default_job = false, first_boot = false, reexecute = false;
2146 char *switch_root_dir = NULL, *switch_root_init = NULL;
9d76d730 2147 usec_t before_startup, after_startup;
625e8690 2148 static char systemd[] = "systemd";
9d76d730 2149 char timespan[FORMAT_TIMESPAN_MAX];
625e8690
LP		 2150 const char *shutdown_verb = NULL, *error_message = NULL;
2151 int r, retval = EXIT_FAILURE;
2152 Manager *m = NULL;
a16e1123 2153 FDSet *fds = NULL;
27b14a22 2154
d72a8f10 2155 /* SysV compatibility: redirect init → telinit */
6808a0bc 2156 redirect_telinit(argc, argv);
2cb1a60d 2157
d72a8f10 2158 /* Take timestamps early on */
c3a170f3
HH		 2159 dual_timestamp_from_monotonic(&kernel_timestamp, 0);
2160 dual_timestamp_get(&userspace_timestamp);
2161
d72a8f10
LP		 2162 /* Figure out whether we need to do initialize the system, or if we already did that because we are
2163 * reexecuting */
aa40ff07 2164 skip_setup = early_skip_setup_check(argc, argv);
d03bc1b8 2165
d72a8f10
LP		 2166 /* If we get started via the /sbin/init symlink then we are called 'init'. After a subsequent reexecution we
2167 * are then called 'systemd'. That is confusing, hence let's call us systemd right-away. */
f3b6a3ed 2168 program_invocation_short_name = systemd;
eee8b7ab 2169 (void) prctl(PR_SET_NAME, systemd);
5d6b1584 2170
d72a8f10 2171 /* Save the original command line */
9a0e6896
LP		 2172 saved_argv = argv;
2173 saved_argc = argc;
f3b6a3ed 2174
6fdb8de4 2175 /* Make sure that if the user says "syslog" we actually log to the journal. */
c1dc6153 2176 log_set_upgrade_syslog_to_journal(true);
bbe63281 2177
df0ff127 2178 if (getpid_cached() == 1) {
48a601fe 2179 /* Disable the umask logic */
90dc8c2e
MG		 2180 umask(0);
2181
d075092f
LP		 2182 /* Make sure that at least initially we do not ever log to journald/syslogd, because it might not be activated
2183 * yet (even though the log socket for it exists). */
2184 log_set_prohibit_ipc(true);
2185
48a601fe
LP		 2186 /* Always reopen /dev/console when running as PID 1 or one of its pre-execve() children. This is
2187 * important so that we never end up logging to any foreign stderr, for example if we have to log in a
2188 * child process right before execve()'ing the actual binary, at a point in time where socket
2189 * activation stderr/stdout area already set up. */
2190 log_set_always_reopen_console(true);
2191 }
2192
df0ff127 2193 if (getpid_cached() == 1 && detect_container() <= 0) {
4f8d551f 2194
a866073d 2195 /* Running outside of a container as PID 1 */
463d0d15 2196 arg_system = true;
a866073d
LP		 2197 log_set_target(LOG_TARGET_KMSG);
2198 log_open();
2199
21bf2ab0 2200 if (in_initrd())
c3a170f3 2201 initrd_timestamp = userspace_timestamp;
c3ba6250 2202
2660882b 2203 if (!skip_setup) {
d723cd65
AK		 2204 r = mount_setup_early();
2205 if (r < 0) {
eee8b7ab 2206 error_message = "Failed to mount early API filesystems";
d723cd65
AK		 2207 goto finish;
2208 }
eee8b7ab 2209
74da609f
LP		 2210 r = initialize_security(
2211 &loaded_policy,
2212 &security_start_timestamp,
2213 &security_finish_timestamp,
2214 &error_message);
2215 if (r < 0)
96694e99 2216 goto finish;
81611586 2217 }
0b3325e7 2218
c3dacc8b 2219 if (mac_selinux_init() < 0) {
cb6531be 2220 error_message = "Failed to initialize SELinux policy";
0ff4cdd9 2221 goto finish;
cb6531be 2222 }
7948c4df 2223
e839bafd
LP		 2224 if (!skip_setup)
2225 initialize_clock();
a866073d
LP		 2226
2227 /* Set the default for later on, but don't actually
2228 * open the logs like this for now. Note that if we
2229 * are transitioning from the initrd there might still
2230 * be journal fd open, and we shouldn't attempt
2231 * opening that before we parsed /proc/cmdline which
2232 * might redirect output elsewhere. */
2233 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
2234
df0ff127 2235 } else if (getpid_cached() == 1) {
a866073d 2236 /* Running inside a container, as PID 1 */
463d0d15 2237 arg_system = true;
a866073d
LP		 2238 log_set_target(LOG_TARGET_CONSOLE);
2239 log_open();
2240
eee8b7ab 2241 /* For later on, see above... */
a866073d
LP		 2242 log_set_target(LOG_TARGET_JOURNAL);
2243
c3a170f3
HH		 2244 /* clear the kernel timestamp,
2245 * because we are in a container */
0f5f63c3 2246 kernel_timestamp = DUAL_TIMESTAMP_NULL;
c3a170f3 2247 } else {
a866073d 2248 /* Running as user instance */
463d0d15 2249 arg_system = false;
eeecf6e6 2250 log_set_target(LOG_TARGET_AUTO);
871e5809 2251 log_open();
c3a170f3
HH		 2252
2253 /* clear the kernel timestamp,
2254 * because we are not PID 1 */
6513d561 2255 kernel_timestamp = DUAL_TIMESTAMP_NULL;
bbe63281 2256 }
a5dab5ce 2257
1e41242e 2258 initialize_coredump(skip_setup);
15a90032 2259
43db615b
LP		 2260 r = fixup_environment();
2261 if (r < 0) {
2262 log_emergency_errno(r, "Failed to fix up PID 1 environment: %m");
2263 error_message = "Failed to fix up PID1 environment";
2264 goto finish;
2265 }
2266
6edefe0b 2267 if (arg_system) {
32391275 2268
3a18b604
FB		 2269 /* Try to figure out if we can use colors with the console. No
2270 * need to do that for user instances since they never log
2271 * into the console. */
2272 log_show_color(colors_enabled());
c76cf844
AK		 2273 r = make_null_stdio();
2274 if (r < 0)
2275 log_warning_errno(r, "Failed to redirect standard streams to /dev/null: %m");
3a18b604
FB		 2276 }
2277
f170852a
LP		 2278 /* Mount /proc, /sys and friends, so that /proc/cmdline and
2279 * /proc/$PID/fd is available. */
df0ff127 2280 if (getpid_cached() == 1) {
f84f9974 2281
a132bef0 2282 /* Load the kernel modules early. */
2e75e2a8
DM		 2283 if (!skip_setup)
2284 kmod_setup();
2e75e2a8 2285
0c85a4f3 2286 r = mount_setup(loaded_policy);
cb6531be
ZJS		 2287 if (r < 0) {
2288 error_message = "Failed to mount API filesystems";
8efe3c01 2289 goto finish;
cb6531be 2290 }
0c85a4f3 2291 }
4ade7963
LP		 2292
2293 /* Reset all signal handlers. */
ce30c8dc
LP		 2294 (void) reset_all_signal_handlers();
2295 (void) ignore_signals(SIGNALS_IGNORE, -1);
078e4539 2296
97d1fb94
LP		 2297 r = load_configuration(argc, argv, &error_message);
2298 if (r < 0)
f170852a 2299 goto finish;
10c961b9 2300
b0d7c989
LP		 2301 r = safety_checks();
2302 if (r < 0)
fe783b03 2303 goto finish;
fe783b03 2304
5625c18a 2305 if (IN_SET(arg_action, ACTION_TEST, ACTION_HELP, ACTION_DUMP_CONFIGURATION_ITEMS))
ee5324aa 2306 (void) pager_open(arg_no_pager, false);
b0d7c989
LP		 2307
2308 if (arg_action != ACTION_RUN)
74e7579c 2309 skip_setup = true;
b87c2aa6 2310
fa0f4d8a 2311 if (arg_action == ACTION_HELP) {
f170852a
LP		 2312 retval = help();
2313 goto finish;
9ba0bc4e
ZJS		 2314 } else if (arg_action == ACTION_VERSION) {
2315 retval = version();
2316 goto finish;
fa0f4d8a 2317 } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
e537352b 2318 unit_dump_config_items(stdout);
22f4096c 2319 retval = EXIT_SUCCESS;
e537352b 2320 goto finish;
f170852a
LP		 2321 }
2322
4c701096 2323 assert_se(IN_SET(arg_action, ACTION_RUN, ACTION_TEST));
f170852a 2324
5a2e0c62
LP		 2325 /* Move out of the way, so that we won't block unmounts */
2326 assert_se(chdir("/") == 0);
2327
dea374e8 2328 if (arg_action == ACTION_RUN) {
a70c72a0 2329
efeb853f 2330 /* Close logging fds, in order not to confuse collecting passed fds and terminal logic below */
a70c72a0
LP		 2331 log_close();
2332
2333 /* Remember open file descriptors for later deserialization */
efeb853f
LP		 2334 r = collect_fds(&fds, &error_message);
2335 if (r < 0)
dea374e8 2336 goto finish;
a16e1123 2337
2e51b31c
LP		 2338 /* Give up any control of the console, but make sure its initialized. */
2339 setup_console_terminal(skip_setup);
56d96fc0 2340
a70c72a0
LP		 2341 /* Open the logging devices, if possible and necessary */
2342 log_open();
56d96fc0 2343 }
4ade7963 2344
31aef7ff 2345 log_execution_mode(&first_boot);
a5dab5ce 2346
2d776038
LP		 2347 r = initialize_runtime(skip_setup,
2348 &saved_rlimit_nofile,
2349 &saved_rlimit_memlock,
2350 &error_message);
2351 if (r < 0)
2352 goto finish;
4096d6f5 2353
e0a3da1f
ZJS		 2354 r = manager_new(arg_system ? UNIT_FILE_SYSTEM : UNIT_FILE_USER,
2355 arg_action == ACTION_TEST ? MANAGER_TEST_FULL : 0,
2356 &m);
e96d6be7 2357 if (r < 0) {
da927ba9 2358 log_emergency_errno(r, "Failed to allocate manager object: %m");
cb6531be 2359 error_message = "Failed to allocate manager object";
60918275
LP		 2360 goto finish;
2361 }
2362
9f9f0342
LP		 2363 m->timestamps[MANAGER_TIMESTAMP_KERNEL] = kernel_timestamp;
2364 m->timestamps[MANAGER_TIMESTAMP_INITRD] = initrd_timestamp;
2365 m->timestamps[MANAGER_TIMESTAMP_USERSPACE] = userspace_timestamp;
2366 m->timestamps[MANAGER_TIMESTAMP_SECURITY_START] = security_start_timestamp;
2367 m->timestamps[MANAGER_TIMESTAMP_SECURITY_FINISH] = security_finish_timestamp;
9e58ff9c 2368
85cb4151 2369 set_manager_defaults(m);
7b46fc6a 2370 set_manager_settings(m);
fd130612 2371 manager_set_first_boot(m, first_boot);
27d340c7 2372
bf4df7c3 2373 /* Remember whether we should queue the default job */
d3b1c508 2374 queue_default_job = !arg_serialization || arg_switched_root;
bf4df7c3 2375
9d76d730
LP		 2376 before_startup = now(CLOCK_MONOTONIC);
2377
d3b1c508 2378 r = manager_startup(m, arg_serialization, fds);
58f88d92 2379 if (r < 0) {
da927ba9 2380 log_error_errno(r, "Failed to fully start up daemon: %m");
cefb3eda 2381 error_message = "Failed to start up manager";
58f88d92
ZJS		 2382 goto finish;
2383 }
a16e1123 2384
6acca5fc 2385 /* This will close all file descriptors that were opened, but not claimed by any unit. */
2feceb5e 2386 fds = fdset_free(fds);
74ca738f 2387 arg_serialization = safe_fclose(arg_serialization);
bf4df7c3
LP		 2388
2389 if (queue_default_job) {
6acca5fc 2390 r = do_queue_default_job(m, &error_message);
718db961 2391 if (r < 0)
37d88da7 2392 goto finish;
6acca5fc 2393 }
ab17a050 2394
6acca5fc 2395 after_startup = now(CLOCK_MONOTONIC);
60918275 2396
6acca5fc
LP		 2397 log_full(arg_action == ACTION_TEST ? LOG_INFO : LOG_DEBUG,
2398 "Loaded units and determined initial transaction in %s.",
2399 format_timespan(timespan, sizeof(timespan), after_startup - before_startup, 100 * USEC_PER_MSEC));
07672f49 2400
6acca5fc 2401 if (arg_action == ACTION_TEST) {
263162da 2402 test_summary(m);
6acca5fc
LP		 2403 retval = EXIT_SUCCESS;
2404 goto finish;
e965d56d 2405 }
d46de8a1 2406
3046b6db
LP		 2407 (void) invoke_main_loop(m,
2408 &reexecute,
2409 &retval,
2410 &shutdown_verb,
2411 &fds,
2412 &switch_root_dir,
2413 &switch_root_init,
2414 &error_message);
f170852a 2415
60918275 2416finish:
b87c2aa6
ZJS		 2417 pager_close();
2418
97792515 2419 if (m)
81f5fc2d 2420 arg_shutdown_watchdog = m->shutdown_watchdog;
fe382237 2421
06d8d842 2422 m = manager_free(m);
60918275 2423
970777b5 2424 free_arguments();
cc56fafe 2425 mac_selinux_finish();
b2bb3dbe 2426
3c7878f9
LP		 2427 if (reexecute)
2428 do_reexecute(argc, argv,
2429 &saved_rlimit_nofile,
2430 &saved_rlimit_memlock,
2431 fds,
2432 switch_root_dir,
2433 switch_root_init,
2434 &error_message); /* This only returns if reexecution failed */
a16e1123 2435
74ca738f 2436 arg_serialization = safe_fclose(arg_serialization);
2feceb5e 2437 fds = fdset_free(fds);
a16e1123 2438
349cc4a5 2439#if HAVE_VALGRIND_VALGRIND_H
54b434b1
LP		 2440 /* If we are PID 1 and running under valgrind, then let's exit
2441 * here explicitly. valgrind will only generate nice output on
2442 * exit(), not on exec(), hence let's do the former not the
2443 * latter here. */
8a2c1fbf
EJ		 2444 if (getpid_cached() == 1 && RUNNING_ON_VALGRIND) {
2445 /* Cleanup watchdog_device strings for valgrind. We need them
2446 * in become_shutdown() so normally we cannot free them yet. */
2447 watchdog_free_device();
2448 arg_watchdog_device = mfree(arg_watchdog_device);
27fe58b7 2449 return retval;
8a2c1fbf 2450 }
54b434b1
LP		 2451#endif
2452
b9080b03 2453 if (shutdown_verb) {
7eb35049 2454 r = become_shutdown(shutdown_verb, retval);
ad929bcc 2455
4a36297c 2456 log_error_errno(r, "Failed to execute shutdown binary, %s: %m", getpid_cached() == 1 ? "freezing" : "quitting");
9b9881d7 2457 error_message = "Failed to execute shutdown binary";
b9080b03
FF		 2458 }
2459
8a2c1fbf
EJ		 2460 watchdog_free_device();
2461 arg_watchdog_device = mfree(arg_watchdog_device);
2462
df0ff127 2463 if (getpid_cached() == 1) {
cb6531be
ZJS		 2464 if (error_message)
2465 manager_status_printf(NULL, STATUS_TYPE_EMERGENCY,
1fc464f6 2466 ANSI_HIGHLIGHT_RED "!!!!!!" ANSI_NORMAL,
cb6531be 2467 "%s, freezing.", error_message);
b9e74c39 2468 freeze_or_reboot();
cb6531be 2469 }
c3b3c274 2470
60918275
LP		 2471 return retval;
2472}
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