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pid1: preserve current value of log target across re-{load,execution}
[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"
bbc1acab 39#include "dbus.h"
3dfc9763
LP		 40#include "dbus-manager.h"
41#include "def.h"
eee8b7ab 42#include "emergency-action.h"
3dfc9763 43#include "env-util.h"
57b7a260 44#include "exit-status.h"
3ffd4af2 45#include "fd-util.h"
3dfc9763 46#include "fdset.h"
718db961 47#include "fileio.h"
f97b34a6 48#include "format-util.h"
f4f15635 49#include "fs-util.h"
3dfc9763
LP		 50#include "hostname-setup.h"
51#include "ima-setup.h"
52#include "killall.h"
53#include "kmod-setup.h"
d7b8eec7 54#include "load-fragment.h"
3dfc9763 55#include "log.h"
b6e66135 56#include "loopback-setup.h"
b6e66135 57#include "machine-id-setup.h"
3dfc9763
LP		 58#include "manager.h"
59#include "missing.h"
60#include "mount-setup.h"
d58ad743 61#include "os-util.h"
3dfc9763 62#include "pager.h"
6bedfcbb 63#include "parse-util.h"
7d5ceb64 64#include "path-util.h"
4e731273 65#include "proc-cmdline.h"
3dfc9763 66#include "process-util.h"
8869a0b4 67#include "raw-clone.h"
78f22b97 68#include "rlimit-util.h"
349cc4a5 69#if HAVE_SECCOMP
83f12b27
FS		 70#include "seccomp-util.h"
71#endif
b6e66135 72#include "selinux-setup.h"
3dfc9763
LP		 73#include "selinux-util.h"
74#include "signal-util.h"
ffbd2c4d 75#include "smack-setup.h"
3dfc9763 76#include "special.h"
8fcde012 77#include "stat-util.h"
15a5e950 78#include "stdio-util.h"
3dfc9763
LP		 79#include "strv.h"
80#include "switch-root.h"
81#include "terminal-util.h"
8612da97 82#include "umask-util.h"
b1d4f8e1 83#include "user-util.h"
9ce17593 84#include "util.h"
3dfc9763
LP		 85#include "virt.h"
86#include "watchdog.h"
b6e66135 87
f170852a
LP		 88static enum {
89 ACTION_RUN,
e965d56d 90 ACTION_HELP,
9ba0bc4e 91 ACTION_VERSION,
e537352b 92 ACTION_TEST,
bbc1acab
YW		 93 ACTION_DUMP_CONFIGURATION_ITEMS,
94 ACTION_DUMP_BUS_PROPERTIES,
fa0f4d8a 95} arg_action = ACTION_RUN;
fa0f4d8a 96static char *arg_default_unit = NULL;
463d0d15 97static bool arg_system = false;
fa0f4d8a 98static bool arg_dump_core = true;
fa0f4d8a 99static int arg_crash_chvt = -1;
b9e74c39
LP		 100static bool arg_crash_shell = false;
101static bool arg_crash_reboot = false;
7d5ceb64 102static char *arg_confirm_spawn = NULL;
b6e2f329 103static ShowStatus arg_show_status = _SHOW_STATUS_UNSET;
bf4df7c3 104static bool arg_switched_root = false;
ea4b98e6 105static bool arg_no_pager = false;
2a12e32e 106static bool arg_service_watchdogs = true;
0c85a4f3 107static char ***arg_join_controllers = NULL;
706343f4 108static ExecOutput arg_default_std_output = EXEC_OUTPUT_JOURNAL;
0a494f1f 109static ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT;
1f19a534
OS		 110static usec_t arg_default_restart_usec = DEFAULT_RESTART_USEC;
111static usec_t arg_default_timeout_start_usec = DEFAULT_TIMEOUT_USEC;
112static usec_t arg_default_timeout_stop_usec = DEFAULT_TIMEOUT_USEC;
3f41e1e5
LN		 113static usec_t arg_default_start_limit_interval = DEFAULT_START_LIMIT_INTERVAL;
114static unsigned arg_default_start_limit_burst = DEFAULT_START_LIMIT_BURST;
e96d6be7
LP		 115static usec_t arg_runtime_watchdog = 0;
116static usec_t arg_shutdown_watchdog = 10 * USEC_PER_MINUTE;
8a2c1fbf 117static char *arg_watchdog_device = NULL;
97d0e5f8 118static char **arg_default_environment = NULL;
517d56b1 119static struct rlimit *arg_default_rlimit[_RLIMIT_MAX] = {};
a103496c 120static uint64_t arg_capability_bounding_set = CAP_ALL;
39362f6f 121static bool arg_no_new_privs = false;
3a43da28 122static nsec_t arg_timer_slack_nsec = NSEC_INFINITY;
bd8f585b 123static usec_t arg_default_timer_accuracy_usec = 1 * USEC_PER_MINUTE;
d3b1c508
LP		 124static Set* arg_syscall_archs = NULL;
125static FILE* arg_serialization = NULL;
085afe36 126static bool arg_default_cpu_accounting = false;
13c31542 127static bool arg_default_io_accounting = false;
377bfd2d 128static bool arg_default_ip_accounting = false;
085afe36 129static bool arg_default_blockio_accounting = false;
444d5863 130static bool arg_default_memory_accounting = MEMORY_ACCOUNTING_DEFAULT;
9ded9cd1 131static bool arg_default_tasks_accounting = true;
79baeeb9 132static uint64_t arg_default_tasks_max = UINT64_MAX;
ee48dbd5 133static sd_id128_t arg_machine_id = {};
ae8c7939 134static EmergencyAction arg_cad_burst_action = EMERGENCY_ACTION_REBOOT_FORCE;
4fc935ca 135
848e863a 136_noreturn_ static void freeze_or_reboot(void) {
b9e74c39
LP		 137
138 if (arg_crash_reboot) {
139 log_notice("Rebooting in 10s...");
140 (void) sleep(10);
141
142 log_notice("Rebooting now...");
143 (void) reboot(RB_AUTOBOOT);
144 log_emergency_errno(errno, "Failed to reboot: %m");
145 }
146
147 log_emergency("Freezing execution.");
148 freeze();
149}
150
848e863a 151_noreturn_ static void crash(int sig) {
7d06dad9
MS		 152 struct sigaction sa;
153 pid_t pid;
97c4f35c 154
df0ff127 155 if (getpid_cached() != 1)
abb26902 156 /* Pass this on immediately, if this is not PID 1 */
92ca4cac 157 (void) raise(sig);
abb26902 158 else if (!arg_dump_core)
4104970e 159 log_emergency("Caught <%s>, not dumping core.", signal_to_string(sig));
97c4f35c 160 else {
7d06dad9 161 sa = (struct sigaction) {
189d5bac 162 .sa_handler = nop_signal_handler,
b92bea5d
ZJS		 163 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
164 };
97c4f35c 165
6f5e3f35 166 /* We want to wait for the core process, hence let's enable SIGCHLD */
92ca4cac 167 (void) sigaction(SIGCHLD, &sa, NULL);
6f5e3f35 168
8869a0b4 169 pid = raw_clone(SIGCHLD);
e62d8c39 170 if (pid < 0)
56f64d95 171 log_emergency_errno(errno, "Caught <%s>, cannot fork for core dump: %m", signal_to_string(sig));
97c4f35c 172 else if (pid == 0) {
97c4f35c 173 /* Enable default signal handler for core dump */
15a90032 174
92ca4cac
LP		 175 sa = (struct sigaction) {
176 .sa_handler = SIG_DFL,
177 };
178 (void) sigaction(sig, &sa, NULL);
97c4f35c 179
15a90032
LP		 180 /* Don't limit the coredump size */
181 (void) setrlimit(RLIMIT_CORE, &RLIMIT_MAKE_CONST(RLIM_INFINITY));
97c4f35c
LP		 182
183 /* Just to be sure... */
e62d9b81 184 (void) chdir("/");
97c4f35c
LP		 185
186 /* Raise the signal again */
ee05e779 187 pid = raw_getpid();
92ca4cac 188 (void) kill(pid, sig); /* raise() would kill the parent */
97c4f35c
LP		 189
190 assert_not_reached("We shouldn't be here...");
92ca4cac 191 _exit(EXIT_FAILURE);
4fc935ca 192 } else {
8e12a6ae
LP		 193 siginfo_t status;
194 int r;
4fc935ca
LP		 195
196 /* Order things nicely. */
e62d8c39
ZJS		 197 r = wait_for_terminate(pid, &status);
198 if (r < 0)
da927ba9 199 log_emergency_errno(r, "Caught <%s>, waitpid() failed: %m", signal_to_string(sig));
8e12a6ae 200 else if (status.si_code != CLD_DUMPED)
ee05e779
ZJS		 201 log_emergency("Caught <%s>, core dump failed (child "PID_FMT", code=%s, status=%i/%s).",
202 signal_to_string(sig),
203 pid, sigchld_code_to_string(status.si_code),
204 status.si_status,
205 strna(status.si_code == CLD_EXITED
38107f5a 206 ? exit_status_to_string(status.si_status, EXIT_STATUS_MINIMAL)
ee05e779 207 : signal_to_string(status.si_status)));
4fc935ca 208 else
4104970e 209 log_emergency("Caught <%s>, dumped core as pid "PID_FMT".", signal_to_string(sig), pid);
97c4f35c
LP		 210 }
211 }
212
b9e74c39 213 if (arg_crash_chvt >= 0)
92ca4cac 214 (void) chvt(arg_crash_chvt);
601f6a1e 215
7d06dad9
MS		 216 sa = (struct sigaction) {
217 .sa_handler = SIG_IGN,
218 .sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART,
219 };
220
221 /* Let the kernel reap children for us */
222 (void) sigaction(SIGCHLD, &sa, NULL);
8c43883a 223
7d06dad9 224 if (arg_crash_shell) {
b9e74c39 225 log_notice("Executing crash shell in 10s...");
92ca4cac 226 (void) sleep(10);
4fc935ca 227
8869a0b4 228 pid = raw_clone(SIGCHLD);
cd3bd60a 229 if (pid < 0)
56f64d95 230 log_emergency_errno(errno, "Failed to fork off crash shell: %m");
6f5e3f35 231 else if (pid == 0) {
b9e74c39 232 (void) setsid();
92ca4cac
LP		 233 (void) make_console_stdio();
234 (void) execle("/bin/sh", "/bin/sh", NULL, environ);
6f5e3f35 235
ee05e779 236 log_emergency_errno(errno, "execle() failed: %m");
92ca4cac 237 _exit(EXIT_FAILURE);
b9e74c39
LP		 238 } else {
239 log_info("Spawned crash shell as PID "PID_FMT".", pid);
4cf0b03b 240 (void) wait_for_terminate(pid, NULL);
b9e74c39 241 }
4fc935ca
LP		 242 }
243
b9e74c39 244 freeze_or_reboot();
97c4f35c
LP		 245}
246
247static void install_crash_handler(void) {
297d563d 248 static const struct sigaction sa = {
b92bea5d 249 .sa_handler = crash,
297d563d 250 .sa_flags = SA_NODEFER, /* So that we can raise the signal again from the signal handler */
b92bea5d 251 };
297d563d 252 int r;
97c4f35c 253
297d563d
LP		 254 /* We ignore the return value here, since, we don't mind if we
255 * cannot set up a crash handler */
256 r = sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1);
257 if (r < 0)
258 log_debug_errno(r, "I had trouble setting up the crash handler, ignoring: %m");
97c4f35c 259}
f170852a 260
56d96fc0
LP		 261static int console_setup(void) {
262 _cleanup_close_ int tty_fd = -1;
263 int r;
80876c20 264
512947d4 265 tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);
23bbb0de
MS		 266 if (tty_fd < 0)
267 return log_error_errno(tty_fd, "Failed to open /dev/console: %m");
80876c20 268
56d96fc0
LP		 269 /* We don't want to force text mode. plymouth may be showing
270 * pictures already from initrd. */
512947d4 271 r = reset_terminal_fd(tty_fd, false);
23bbb0de
MS		 272 if (r < 0)
273 return log_error_errno(r, "Failed to reset /dev/console: %m");
843d2643 274
56d96fc0 275 return 0;
80876c20
LP		 276}
277
b9e74c39
LP		 278static int parse_crash_chvt(const char *value) {
279 int b;
280
281 if (safe_atoi(value, &arg_crash_chvt) >= 0)
282 return 0;
283
284 b = parse_boolean(value);
285 if (b < 0)
286 return b;
287
288 if (b > 0)
289 arg_crash_chvt = 0; /* switch to where kmsg goes */
290 else
291 arg_crash_chvt = -1; /* turn off switching */
292
293 return 0;
294}
295
7d5ceb64
FB		 296static int parse_confirm_spawn(const char *value, char **console) {
297 char *s;
298 int r;
299
300 r = value ? parse_boolean(value) : 1;
301 if (r == 0) {
302 *console = NULL;
303 return 0;
304 }
305
306 if (r > 0) /* on with default tty */
307 s = strdup("/dev/console");
308 else if (is_path(value)) /* on with fully qualified path */
309 s = strdup(value);
310 else /* on with only a tty file name, not a fully qualified path */
311 s = strjoin("/dev/", value);
312 if (!s)
313 return -ENOMEM;
5b65ae15 314
7d5ceb64
FB		 315 *console = s;
316 return 0;
317}
318
ee48dbd5 319static int set_machine_id(const char *m) {
e042eab7 320 sd_id128_t t;
8b26cdbd 321 assert(m);
ee48dbd5 322
e042eab7 323 if (sd_id128_from_string(m, &t) < 0)
ee48dbd5
NC		 324 return -EINVAL;
325
e042eab7 326 if (sd_id128_is_null(t))
ee48dbd5
NC		 327 return -EINVAL;
328
e042eab7 329 arg_machine_id = t;
ee48dbd5
NC		 330 return 0;
331}
332
96287a49 333static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
f170852a 334
059cb385 335 int r;
f170852a 336
059cb385 337 assert(key);
5192bd19 338
1d84ad94 339 if (STR_IN_SET(key, "systemd.unit", "rd.systemd.unit")) {
bf4df7c3 340
1d84ad94
LP		 341 if (proc_cmdline_value_missing(key, value))
342 return 0;
bf4df7c3 343
1d84ad94
LP		 344 if (!unit_name_is_valid(value, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE))
345 log_warning("Unit name specified on %s= is not valid, ignoring: %s", key, value);
346 else if (in_initrd() == !!startswith(key, "rd.")) {
347 if (free_and_strdup(&arg_default_unit, value) < 0)
348 return log_oom();
349 }
f170852a 350
1d84ad94 351 } else if (proc_cmdline_key_streq(key, "systemd.dump_core")) {
4fc935ca 352
1d84ad94 353 r = value ? parse_boolean(value) : true;
fb472900 354 if (r < 0)
059cb385 355 log_warning("Failed to parse dump core switch %s. Ignoring.", value);
4fc935ca 356 else
fa0f4d8a 357 arg_dump_core = r;
4fc935ca 358
1d84ad94 359 } else if (proc_cmdline_key_streq(key, "systemd.crash_chvt")) {
b9e74c39 360
1d84ad94
LP		 361 if (!value)
362 arg_crash_chvt = 0; /* turn on */
363 else if (parse_crash_chvt(value) < 0)
b9e74c39
LP		 364 log_warning("Failed to parse crash chvt switch %s. Ignoring.", value);
365
1d84ad94 366 } else if (proc_cmdline_key_streq(key, "systemd.crash_shell")) {
4fc935ca 367
1d84ad94 368 r = value ? parse_boolean(value) : true;
fb472900 369 if (r < 0)
059cb385 370 log_warning("Failed to parse crash shell switch %s. Ignoring.", value);
4fc935ca 371 else
fa0f4d8a 372 arg_crash_shell = r;
5e7ee61c 373
1d84ad94 374 } else if (proc_cmdline_key_streq(key, "systemd.crash_reboot")) {
5e7ee61c 375
1d84ad94 376 r = value ? parse_boolean(value) : true;
b9e74c39
LP		 377 if (r < 0)
378 log_warning("Failed to parse crash reboot switch %s. Ignoring.", value);
5e7ee61c 379 else
b9e74c39 380 arg_crash_reboot = r;
5e7ee61c 381
1d84ad94
LP		 382 } else if (proc_cmdline_key_streq(key, "systemd.confirm_spawn")) {
383 char *s;
7d5ceb64 384
1d84ad94 385 r = parse_confirm_spawn(value, &s);
059cb385 386 if (r < 0)
7d5ceb64 387 log_warning_errno(r, "Failed to parse confirm_spawn switch %s. Ignoring.", value);
1d84ad94
LP		 388 else {
389 free(arg_confirm_spawn);
390 arg_confirm_spawn = s;
391 }
601f6a1e 392
2a12e32e
JK		 393 } else if (proc_cmdline_key_streq(key, "systemd.service_watchdogs")) {
394
395 r = value ? parse_boolean(value) : true;
396 if (r < 0)
397 log_warning("Failed to parse service watchdog switch %s. Ignoring.", value);
398 else
399 arg_service_watchdogs = r;
400
1d84ad94 401 } else if (proc_cmdline_key_streq(key, "systemd.show_status")) {
9e58ff9c 402
1d84ad94
LP		 403 if (value) {
404 r = parse_show_status(value, &arg_show_status);
405 if (r < 0)
406 log_warning("Failed to parse show status switch %s. Ignoring.", value);
407 } else
408 arg_show_status = SHOW_STATUS_YES;
059cb385 409
1d84ad94
LP		 410 } else if (proc_cmdline_key_streq(key, "systemd.default_standard_output")) {
411
412 if (proc_cmdline_value_missing(key, value))
413 return 0;
0a494f1f 414
059cb385 415 r = exec_output_from_string(value);
fb472900 416 if (r < 0)
059cb385 417 log_warning("Failed to parse default standard output switch %s. Ignoring.", value);
0a494f1f
LP		 418 else
419 arg_default_std_output = r;
0a494f1f 420
1d84ad94
LP		 421 } else if (proc_cmdline_key_streq(key, "systemd.default_standard_error")) {
422
423 if (proc_cmdline_value_missing(key, value))
424 return 0;
059cb385
LP		 425
426 r = exec_output_from_string(value);
fb472900 427 if (r < 0)
059cb385 428 log_warning("Failed to parse default standard error switch %s. Ignoring.", value);
0a494f1f
LP		 429 else
430 arg_default_std_error = r;
9e7c5357 431
1d84ad94
LP		 432 } else if (streq(key, "systemd.setenv")) {
433
434 if (proc_cmdline_value_missing(key, value))
435 return 0;
059cb385
LP		 436
437 if (env_assignment_is_valid(value)) {
e21fea24
KS		 438 char **env;
439
059cb385 440 env = strv_env_set(arg_default_environment, value);
1d84ad94
LP		 441 if (!env)
442 return log_oom();
443
444 arg_default_environment = env;
e21fea24 445 } else
059cb385 446 log_warning("Environment variable name '%s' is not valid. Ignoring.", value);
9e58ff9c 447
1d84ad94
LP		 448 } else if (proc_cmdline_key_streq(key, "systemd.machine_id")) {
449
450 if (proc_cmdline_value_missing(key, value))
451 return 0;
452
453 r = set_machine_id(value);
454 if (r < 0)
455 log_warning("MachineID '%s' is not valid. Ignoring.", value);
ee48dbd5 456
1d84ad94
LP		 457 } else if (proc_cmdline_key_streq(key, "systemd.default_timeout_start_sec")) {
458
459 if (proc_cmdline_value_missing(key, value))
460 return 0;
461
462 r = parse_sec(value, &arg_default_timeout_start_usec);
463 if (r < 0)
464 log_warning_errno(r, "Failed to parse default start timeout: %s, ignoring.", value);
465
466 if (arg_default_timeout_start_usec <= 0)
467 arg_default_timeout_start_usec = USEC_INFINITY;
ee48dbd5 468
8a2c1fbf
EJ		 469 } else if (proc_cmdline_key_streq(key, "systemd.watchdog_device")) {
470
471 if (proc_cmdline_value_missing(key, value))
472 return 0;
473
474 parse_path_argument_and_warn(value, false, &arg_watchdog_device);
475
059cb385 476 } else if (streq(key, "quiet") && !value) {
d7b15e0a 477
b6e2f329 478 if (arg_show_status == _SHOW_STATUS_UNSET)
d450b6f2 479 arg_show_status = SHOW_STATUS_AUTO;
059cb385
LP		 480
481 } else if (streq(key, "debug") && !value) {
d7b15e0a 482
1de1c9c3
LP		 483 /* Note that log_parse_environment() handles 'debug'
484 * too, and sets the log level to LOG_DEBUG. */
d7b15e0a 485
75f86906 486 if (detect_container() > 0)
b2103dcc 487 log_set_target(LOG_TARGET_CONSOLE);
059cb385 488
dcd61450 489 } else if (!value) {
e2c9a131 490 const char *target;
f170852a
LP		 491
492 /* SysV compatibility */
e2c9a131
EV		 493 target = runlevel_to_target(key);
494 if (target)
495 return free_and_strdup(&arg_default_unit, target);
f170852a
LP		 496 }
497
498 return 0;
499}
500
e8e581bf
ZJS		 501#define DEFINE_SETTER(name, func, descr) \
502 static int name(const char *unit, \
503 const char *filename, \
504 unsigned line, \
505 const char *section, \
71a61510 506 unsigned section_line, \
e8e581bf
ZJS		 507 const char *lvalue, \
508 int ltype, \
509 const char *rvalue, \
510 void *data, \
511 void *userdata) { \
512 \
513 int r; \
514 \
515 assert(filename); \
516 assert(lvalue); \
517 assert(rvalue); \
518 \
519 r = func(rvalue); \
520 if (r < 0) \
d1cefe0a
LP		 521 log_syntax(unit, LOG_ERR, filename, line, r, \
522 "Invalid " descr "'%s': %m", \
523 rvalue); \
e8e581bf
ZJS		 524 \
525 return 0; \
526 }
487393e9 527
a6ecbf83
FB		 528DEFINE_SETTER(config_parse_level2, log_set_max_level_from_string, "log level");
529DEFINE_SETTER(config_parse_target, log_set_target_from_string, "target");
530DEFINE_SETTER(config_parse_color, log_show_color_from_string, "color" );
531DEFINE_SETTER(config_parse_location, log_show_location_from_string, "location");
487393e9 532
4d7213b2
LP		 533static int config_parse_cpu_affinity2(
534 const char *unit,
535 const char *filename,
536 unsigned line,
537 const char *section,
538 unsigned section_line,
539 const char *lvalue,
540 int ltype,
541 const char *rvalue,
542 void *data,
543 void *userdata) {
487393e9 544
4b40bc38 545 _cleanup_cpu_free_ cpu_set_t *c = NULL;
f5c72b73 546 int ncpus;
487393e9 547
765d143b 548 ncpus = parse_cpu_set_and_warn(rvalue, &c, unit, filename, line, lvalue);
f5c72b73
FB		 549 if (ncpus < 0)
550 return ncpus;
487393e9 551
f5c72b73 552 if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0)
25f027c5 553 log_warning_errno(errno, "Failed to set CPU affinity: %m");
487393e9 554
487393e9
LP		 555 return 0;
556}
557
4d7213b2
LP		 558static int config_parse_show_status(
559 const char* unit,
560 const char *filename,
561 unsigned line,
562 const char *section,
563 unsigned section_line,
564 const char *lvalue,
565 int ltype,
566 const char *rvalue,
567 void *data,
568 void *userdata) {
569
570 int k;
571 ShowStatus *b = data;
572
573 assert(filename);
574 assert(lvalue);
575 assert(rvalue);
576 assert(data);
577
578 k = parse_show_status(rvalue, b);
579 if (k < 0) {
12ca818f 580 log_syntax(unit, LOG_ERR, filename, line, k, "Failed to parse show status setting, ignoring: %s", rvalue);
4d7213b2
LP		 581 return 0;
582 }
583
584 return 0;
585}
586
5db98187
LP		 587static int config_parse_output_restricted(
588 const char* unit,
589 const char *filename,
590 unsigned line,
591 const char *section,
592 unsigned section_line,
593 const char *lvalue,
594 int ltype,
595 const char *rvalue,
596 void *data,
597 void *userdata) {
598
599 ExecOutput t, *eo = data;
600
601 assert(filename);
602 assert(lvalue);
603 assert(rvalue);
604 assert(data);
605
606 t = exec_output_from_string(rvalue);
607 if (t < 0) {
608 log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse output type, ignoring: %s", rvalue);
609 return 0;
610 }
611
612 if (IN_SET(t, EXEC_OUTPUT_SOCKET, EXEC_OUTPUT_NAMED_FD, EXEC_OUTPUT_FILE)) {
613 log_syntax(unit, LOG_ERR, filename, line, 0, "Standard output types socket, fd:, file: are not supported as defaults, ignoring: %s", rvalue);
614 return 0;
615 }
616
617 *eo = t;
618 return 0;
619}
620
b9e74c39
LP		 621static int config_parse_crash_chvt(
622 const char* unit,
623 const char *filename,
624 unsigned line,
625 const char *section,
626 unsigned section_line,
627 const char *lvalue,
628 int ltype,
629 const char *rvalue,
630 void *data,
631 void *userdata) {
632
633 int r;
634
635 assert(filename);
636 assert(lvalue);
637 assert(rvalue);
b9e74c39
LP		 638
639 r = parse_crash_chvt(rvalue);
640 if (r < 0) {
641 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse CrashChangeVT= setting, ignoring: %s", rvalue);
642 return 0;
643 }
644
645 return 0;
646}
647
487393e9
LP		 648static int parse_config_file(void) {
649
f975e971 650 const ConfigTableItem items[] = {
d3b1c508
LP		 651 { "Manager", "LogLevel", config_parse_level2, 0, NULL },
652 { "Manager", "LogTarget", config_parse_target, 0, NULL },
653 { "Manager", "LogColor", config_parse_color, 0, NULL },
654 { "Manager", "LogLocation", config_parse_location, 0, NULL },
655 { "Manager", "DumpCore", config_parse_bool, 0, &arg_dump_core },
b9e74c39
LP		 656 { "Manager", "CrashChVT", /* legacy */ config_parse_crash_chvt, 0, NULL },
657 { "Manager", "CrashChangeVT", config_parse_crash_chvt, 0, NULL },
d3b1c508 658 { "Manager", "CrashShell", config_parse_bool, 0, &arg_crash_shell },
b9e74c39 659 { "Manager", "CrashReboot", config_parse_bool, 0, &arg_crash_reboot },
d3b1c508 660 { "Manager", "ShowStatus", config_parse_show_status, 0, &arg_show_status },
d3b1c508
LP		 661 { "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, NULL },
662 { "Manager", "JoinControllers", config_parse_join_controllers, 0, &arg_join_controllers },
663 { "Manager", "RuntimeWatchdogSec", config_parse_sec, 0, &arg_runtime_watchdog },
664 { "Manager", "ShutdownWatchdogSec", config_parse_sec, 0, &arg_shutdown_watchdog },
8a2c1fbf 665 { "Manager", "WatchdogDevice", config_parse_path, 0, &arg_watchdog_device },
a103496c 666 { "Manager", "CapabilityBoundingSet", config_parse_capability_set, 0, &arg_capability_bounding_set },
39362f6f 667 { "Manager", "NoNewPrivileges", config_parse_bool, 0, &arg_no_new_privs },
349cc4a5 668#if HAVE_SECCOMP
d3b1c508 669 { "Manager", "SystemCallArchitectures", config_parse_syscall_archs, 0, &arg_syscall_archs },
89fffa27 670#endif
d3b1c508 671 { "Manager", "TimerSlackNSec", config_parse_nsec, 0, &arg_timer_slack_nsec },
bd8f585b 672 { "Manager", "DefaultTimerAccuracySec", config_parse_sec, 0, &arg_default_timer_accuracy_usec },
5db98187
LP		 673 { "Manager", "DefaultStandardOutput", config_parse_output_restricted,0, &arg_default_std_output },
674 { "Manager", "DefaultStandardError", config_parse_output_restricted,0, &arg_default_std_error },
d3b1c508
LP		 675 { "Manager", "DefaultTimeoutStartSec", config_parse_sec, 0, &arg_default_timeout_start_usec },
676 { "Manager", "DefaultTimeoutStopSec", config_parse_sec, 0, &arg_default_timeout_stop_usec },
677 { "Manager", "DefaultRestartSec", config_parse_sec, 0, &arg_default_restart_usec },
f0367da7
LP		 678 { "Manager", "DefaultStartLimitInterval", config_parse_sec, 0, &arg_default_start_limit_interval }, /* obsolete alias */
679 { "Manager", "DefaultStartLimitIntervalSec",config_parse_sec, 0, &arg_default_start_limit_interval },
d3b1c508
LP		 680 { "Manager", "DefaultStartLimitBurst", config_parse_unsigned, 0, &arg_default_start_limit_burst },
681 { "Manager", "DefaultEnvironment", config_parse_environ, 0, &arg_default_environment },
4f424df7
LP		 682 { "Manager", "DefaultLimitCPU", config_parse_rlimit, RLIMIT_CPU, arg_default_rlimit },
683 { "Manager", "DefaultLimitFSIZE", config_parse_rlimit, RLIMIT_FSIZE, arg_default_rlimit },
684 { "Manager", "DefaultLimitDATA", config_parse_rlimit, RLIMIT_DATA, arg_default_rlimit },
685 { "Manager", "DefaultLimitSTACK", config_parse_rlimit, RLIMIT_STACK, arg_default_rlimit },
686 { "Manager", "DefaultLimitCORE", config_parse_rlimit, RLIMIT_CORE, arg_default_rlimit },
687 { "Manager", "DefaultLimitRSS", config_parse_rlimit, RLIMIT_RSS, arg_default_rlimit },
688 { "Manager", "DefaultLimitNOFILE", config_parse_rlimit, RLIMIT_NOFILE, arg_default_rlimit },
689 { "Manager", "DefaultLimitAS", config_parse_rlimit, RLIMIT_AS, arg_default_rlimit },
690 { "Manager", "DefaultLimitNPROC", config_parse_rlimit, RLIMIT_NPROC, arg_default_rlimit },
691 { "Manager", "DefaultLimitMEMLOCK", config_parse_rlimit, RLIMIT_MEMLOCK, arg_default_rlimit },
692 { "Manager", "DefaultLimitLOCKS", config_parse_rlimit, RLIMIT_LOCKS, arg_default_rlimit },
693 { "Manager", "DefaultLimitSIGPENDING", config_parse_rlimit, RLIMIT_SIGPENDING, arg_default_rlimit },
694 { "Manager", "DefaultLimitMSGQUEUE", config_parse_rlimit, RLIMIT_MSGQUEUE, arg_default_rlimit },
695 { "Manager", "DefaultLimitNICE", config_parse_rlimit, RLIMIT_NICE, arg_default_rlimit },
696 { "Manager", "DefaultLimitRTPRIO", config_parse_rlimit, RLIMIT_RTPRIO, arg_default_rlimit },
697 { "Manager", "DefaultLimitRTTIME", config_parse_rlimit, RLIMIT_RTTIME, arg_default_rlimit },
085afe36 698 { "Manager", "DefaultCPUAccounting", config_parse_bool, 0, &arg_default_cpu_accounting },
13c31542 699 { "Manager", "DefaultIOAccounting", config_parse_bool, 0, &arg_default_io_accounting },
377bfd2d 700 { "Manager", "DefaultIPAccounting", config_parse_bool, 0, &arg_default_ip_accounting },
085afe36
LP		 701 { "Manager", "DefaultBlockIOAccounting", config_parse_bool, 0, &arg_default_blockio_accounting },
702 { "Manager", "DefaultMemoryAccounting", config_parse_bool, 0, &arg_default_memory_accounting },
03a7b521 703 { "Manager", "DefaultTasksAccounting", config_parse_bool, 0, &arg_default_tasks_accounting },
0af20ea2 704 { "Manager", "DefaultTasksMax", config_parse_tasks_max, 0, &arg_default_tasks_max },
ae8c7939 705 { "Manager", "CtrlAltDelBurstAction", config_parse_emergency_action, 0, &arg_cad_burst_action },
d3b1c508 706 {}
487393e9
LP		 707 };
708
1b907b5c 709 const char *fn, *conf_dirs_nulstr;
487393e9 710
463d0d15 711 fn = arg_system ?
75eb6154
LP		 712 PKGSYSCONFDIR "/system.conf" :
713 PKGSYSCONFDIR "/user.conf";
714
463d0d15 715 conf_dirs_nulstr = arg_system ?
75eb6154
LP		 716 CONF_PATHS_NULSTR("systemd/system.conf.d") :
717 CONF_PATHS_NULSTR("systemd/user.conf.d");
718
bcde742e 719 (void) config_parse_many_nulstr(fn, conf_dirs_nulstr, "Manager\0", config_item_table_lookup, items, CONFIG_PARSE_WARN, NULL);
36c16a7c
LP		 720
721 /* Traditionally "0" was used to turn off the default unit timeouts. Fix this up so that we used USEC_INFINITY
722 * like everywhere else. */
723 if (arg_default_timeout_start_usec <= 0)
724 arg_default_timeout_start_usec = USEC_INFINITY;
725 if (arg_default_timeout_stop_usec <= 0)
726 arg_default_timeout_stop_usec = USEC_INFINITY;
487393e9 727
487393e9
LP		 728 return 0;
729}
730
85cb4151 731static void set_manager_defaults(Manager *m) {
06af2a04
TB		 732
733 assert(m);
734
5b65ae15
LP		 735 /* Propagates the various default unit property settings into the manager object, i.e. properties that do not
736 * affect the manager itself, but are just what newly allocated units will have set if they haven't set
737 * anything else. (Also see set_manager_settings() for the settings that affect the manager's own behaviour) */
738
06af2a04
TB		 739 m->default_timer_accuracy_usec = arg_default_timer_accuracy_usec;
740 m->default_std_output = arg_default_std_output;
741 m->default_std_error = arg_default_std_error;
742 m->default_timeout_start_usec = arg_default_timeout_start_usec;
743 m->default_timeout_stop_usec = arg_default_timeout_stop_usec;
744 m->default_restart_usec = arg_default_restart_usec;
745 m->default_start_limit_interval = arg_default_start_limit_interval;
746 m->default_start_limit_burst = arg_default_start_limit_burst;
747 m->default_cpu_accounting = arg_default_cpu_accounting;
13c31542 748 m->default_io_accounting = arg_default_io_accounting;
377bfd2d 749 m->default_ip_accounting = arg_default_ip_accounting;
06af2a04
TB		 750 m->default_blockio_accounting = arg_default_blockio_accounting;
751 m->default_memory_accounting = arg_default_memory_accounting;
03a7b521 752 m->default_tasks_accounting = arg_default_tasks_accounting;
0af20ea2 753 m->default_tasks_max = arg_default_tasks_max;
06af2a04
TB		 754
755 manager_set_default_rlimits(m, arg_default_rlimit);
756 manager_environment_add(m, NULL, arg_default_environment);
757}
758
7b46fc6a
LP		 759static void set_manager_settings(Manager *m) {
760
761 assert(m);
762
5b65ae15
LP		 763 /* Propagates the various manager settings into the manager object, i.e. properties that effect the manager
764 * itself (as opposed to just being inherited into newly allocated units, see set_manager_defaults() above). */
765
7b46fc6a 766 m->confirm_spawn = arg_confirm_spawn;
2a12e32e 767 m->service_watchdogs = arg_service_watchdogs;
7b46fc6a
LP		 768 m->runtime_watchdog = arg_runtime_watchdog;
769 m->shutdown_watchdog = arg_shutdown_watchdog;
770 m->cad_burst_action = arg_cad_burst_action;
771
772 manager_set_show_status(m, arg_show_status);
773}
774
f170852a 775static int parse_argv(int argc, char *argv[]) {
f170852a
LP		 776 enum {
777 ARG_LOG_LEVEL = 0x100,
778 ARG_LOG_TARGET,
bbe63281
LP		 779 ARG_LOG_COLOR,
780 ARG_LOG_LOCATION,
2f198e2f 781 ARG_UNIT,
edb9aaa8 782 ARG_SYSTEM,
af2d49f7 783 ARG_USER,
e537352b 784 ARG_TEST,
b87c2aa6 785 ARG_NO_PAGER,
9ba0bc4e 786 ARG_VERSION,
80876c20 787 ARG_DUMP_CONFIGURATION_ITEMS,
bbc1acab 788 ARG_DUMP_BUS_PROPERTIES,
9e58ff9c 789 ARG_DUMP_CORE,
b9e74c39 790 ARG_CRASH_CHVT,
9e58ff9c 791 ARG_CRASH_SHELL,
b9e74c39 792 ARG_CRASH_REBOOT,
a16e1123 793 ARG_CONFIRM_SPAWN,
9e58ff9c 794 ARG_SHOW_STATUS,
4288f619 795 ARG_DESERIALIZE,
2660882b 796 ARG_SWITCHED_ROOT,
0a494f1f 797 ARG_DEFAULT_STD_OUTPUT,
ee48dbd5 798 ARG_DEFAULT_STD_ERROR,
2a12e32e
JK		 799 ARG_MACHINE_ID,
800 ARG_SERVICE_WATCHDOGS,
f170852a
LP		 801 };
802
803 static const struct option options[] = {
a16e1123
LP		 804 { "log-level", required_argument, NULL, ARG_LOG_LEVEL },
805 { "log-target", required_argument, NULL, ARG_LOG_TARGET },
bbe63281
LP		 806 { "log-color", optional_argument, NULL, ARG_LOG_COLOR },
807 { "log-location", optional_argument, NULL, ARG_LOG_LOCATION },
2f198e2f 808 { "unit", required_argument, NULL, ARG_UNIT },
edb9aaa8 809 { "system", no_argument, NULL, ARG_SYSTEM },
af2d49f7 810 { "user", no_argument, NULL, ARG_USER },
a16e1123 811 { "test", no_argument, NULL, ARG_TEST },
b87c2aa6 812 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
a16e1123 813 { "help", no_argument, NULL, 'h' },
9ba0bc4e 814 { "version", no_argument, NULL, ARG_VERSION },
a16e1123 815 { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
bbc1acab 816 { "dump-bus-properties", no_argument, NULL, ARG_DUMP_BUS_PROPERTIES },
a5d87bf0 817 { "dump-core", optional_argument, NULL, ARG_DUMP_CORE },
b9e74c39 818 { "crash-chvt", required_argument, NULL, ARG_CRASH_CHVT },
a5d87bf0 819 { "crash-shell", optional_argument, NULL, ARG_CRASH_SHELL },
b9e74c39 820 { "crash-reboot", optional_argument, NULL, ARG_CRASH_REBOOT },
a5d87bf0 821 { "confirm-spawn", optional_argument, NULL, ARG_CONFIRM_SPAWN },
6e98720f 822 { "show-status", optional_argument, NULL, ARG_SHOW_STATUS },
a16e1123 823 { "deserialize", required_argument, NULL, ARG_DESERIALIZE },
2660882b 824 { "switched-root", no_argument, NULL, ARG_SWITCHED_ROOT },
0a494f1f
LP		 825 { "default-standard-output", required_argument, NULL, ARG_DEFAULT_STD_OUTPUT, },
826 { "default-standard-error", required_argument, NULL, ARG_DEFAULT_STD_ERROR, },
ee48dbd5 827 { "machine-id", required_argument, NULL, ARG_MACHINE_ID },
2a12e32e 828 { "service-watchdogs", required_argument, NULL, ARG_SERVICE_WATCHDOGS },
fb472900 829 {}
f170852a
LP		 830 };
831
832 int c, r;
833
834 assert(argc >= 1);
835 assert(argv);
836
df0ff127 837 if (getpid_cached() == 1)
b770165a
LP		 838 opterr = 0;
839
099663ff 840 while ((c = getopt_long(argc, argv, "hDbsz:", options, NULL)) >= 0)
f170852a
LP		 841
842 switch (c) {
843
844 case ARG_LOG_LEVEL:
fb472900
ZJS		 845 r = log_set_max_level_from_string(optarg);
846 if (r < 0) {
f170852a
LP		 847 log_error("Failed to parse log level %s.", optarg);
848 return r;
849 }
850
851 break;
852
853 case ARG_LOG_TARGET:
fb472900
ZJS		 854 r = log_set_target_from_string(optarg);
855 if (r < 0) {
f170852a
LP		 856 log_error("Failed to parse log target %s.", optarg);
857 return r;
858 }
859
860 break;
861
bbe63281
LP		 862 case ARG_LOG_COLOR:
863
d0b170c8 864 if (optarg) {
fb472900
ZJS		 865 r = log_show_color_from_string(optarg);
866 if (r < 0) {
d0b170c8
LP		 867 log_error("Failed to parse log color setting %s.", optarg);
868 return r;
869 }
870 } else
871 log_show_color(true);
bbe63281
LP		 872
873 break;
874
875 case ARG_LOG_LOCATION:
d0b170c8 876 if (optarg) {
fb472900
ZJS		 877 r = log_show_location_from_string(optarg);
878 if (r < 0) {
d0b170c8
LP		 879 log_error("Failed to parse log location setting %s.", optarg);
880 return r;
881 }
882 } else
883 log_show_location(true);
bbe63281
LP		 884
885 break;
886
0a494f1f 887 case ARG_DEFAULT_STD_OUTPUT:
fb472900
ZJS		 888 r = exec_output_from_string(optarg);
889 if (r < 0) {
0a494f1f
LP		 890 log_error("Failed to parse default standard output setting %s.", optarg);
891 return r;
892 } else
893 arg_default_std_output = r;
894 break;
895
896 case ARG_DEFAULT_STD_ERROR:
fb472900
ZJS		 897 r = exec_output_from_string(optarg);
898 if (r < 0) {
0a494f1f
LP		 899 log_error("Failed to parse default standard error output setting %s.", optarg);
900 return r;
901 } else
902 arg_default_std_error = r;
903 break;
904
2f198e2f 905 case ARG_UNIT:
e6e242ad 906 r = free_and_strdup(&arg_default_unit, optarg);
23bbb0de
MS		 907 if (r < 0)
908 return log_error_errno(r, "Failed to set default unit %s: %m", optarg);
f170852a
LP		 909
910 break;
911
edb9aaa8 912 case ARG_SYSTEM:
463d0d15 913 arg_system = true;
edb9aaa8 914 break;
a5dab5ce 915
af2d49f7 916 case ARG_USER:
463d0d15 917 arg_system = false;
a5dab5ce 918 break;
a5dab5ce 919
e965d56d 920 case ARG_TEST:
fa0f4d8a 921 arg_action = ACTION_TEST;
b87c2aa6
ZJS		 922 break;
923
924 case ARG_NO_PAGER:
925 arg_no_pager = true;
e965d56d
LP		 926 break;
927
9ba0bc4e
ZJS		 928 case ARG_VERSION:
929 arg_action = ACTION_VERSION;
930 break;
931
e537352b 932 case ARG_DUMP_CONFIGURATION_ITEMS:
fa0f4d8a 933 arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
e537352b
LP		 934 break;
935
bbc1acab
YW		 936 case ARG_DUMP_BUS_PROPERTIES:
937 arg_action = ACTION_DUMP_BUS_PROPERTIES;
938 break;
939
9e58ff9c 940 case ARG_DUMP_CORE:
b9e74c39
LP		 941 if (!optarg)
942 arg_dump_core = true;
943 else {
944 r = parse_boolean(optarg);
945 if (r < 0)
946 return log_error_errno(r, "Failed to parse dump core boolean: %s", optarg);
947 arg_dump_core = r;
a5d87bf0 948 }
b9e74c39
LP		 949 break;
950
951 case ARG_CRASH_CHVT:
952 r = parse_crash_chvt(optarg);
953 if (r < 0)
954 return log_error_errno(r, "Failed to parse crash virtual terminal index: %s", optarg);
9e58ff9c
LP		 955 break;
956
957 case ARG_CRASH_SHELL:
b9e74c39
LP		 958 if (!optarg)
959 arg_crash_shell = true;
960 else {
961 r = parse_boolean(optarg);
962 if (r < 0)
963 return log_error_errno(r, "Failed to parse crash shell boolean: %s", optarg);
964 arg_crash_shell = r;
965 }
966 break;
967
968 case ARG_CRASH_REBOOT:
969 if (!optarg)
970 arg_crash_reboot = true;
971 else {
972 r = parse_boolean(optarg);
973 if (r < 0)
974 return log_error_errno(r, "Failed to parse crash shell boolean: %s", optarg);
975 arg_crash_reboot = r;
a5d87bf0 976 }
9e58ff9c
LP		 977 break;
978
80876c20 979 case ARG_CONFIRM_SPAWN:
7d5ceb64
FB		 980 arg_confirm_spawn = mfree(arg_confirm_spawn);
981
982 r = parse_confirm_spawn(optarg, &arg_confirm_spawn);
983 if (r < 0)
984 return log_error_errno(r, "Failed to parse confirm spawn option: %m");
80876c20
LP		 985 break;
986
2a12e32e
JK		 987 case ARG_SERVICE_WATCHDOGS:
988 r = parse_boolean(optarg);
989 if (r < 0)
990 return log_error_errno(r, "Failed to parse service watchdogs boolean: %s", optarg);
991 arg_service_watchdogs = r;
992 break;
993
9e58ff9c 994 case ARG_SHOW_STATUS:
d450b6f2
ZJS		 995 if (optarg) {
996 r = parse_show_status(optarg, &arg_show_status);
997 if (r < 0) {
998 log_error("Failed to parse show status boolean %s.", optarg);
999 return r;
1000 }
1001 } else
1002 arg_show_status = SHOW_STATUS_YES;
6e98720f 1003 break;
a5d87bf0 1004
a16e1123
LP		 1005 case ARG_DESERIALIZE: {
1006 int fd;
1007 FILE *f;
1008
01e10de3
LP		 1009 r = safe_atoi(optarg, &fd);
1010 if (r < 0 || fd < 0) {
a16e1123 1011 log_error("Failed to parse deserialize option %s.", optarg);
b9e74c39 1012 return -EINVAL;
a16e1123
LP		 1013 }
1014
b9e74c39 1015 (void) fd_cloexec(fd, true);
01e10de3
LP		 1016
1017 f = fdopen(fd, "r");
4a62c710
MS		 1018 if (!f)
1019 return log_error_errno(errno, "Failed to open serialization fd: %m");
a16e1123 1020
74ca738f 1021 safe_fclose(arg_serialization);
d3b1c508 1022 arg_serialization = f;
a16e1123
LP		 1023
1024 break;
1025 }
1026
2660882b 1027 case ARG_SWITCHED_ROOT:
bf4df7c3 1028 arg_switched_root = true;
d03bc1b8
HH		 1029 break;
1030
ee48dbd5
NC		 1031 case ARG_MACHINE_ID:
1032 r = set_machine_id(optarg);
54500613
LP		 1033 if (r < 0)
1034 return log_error_errno(r, "MachineID '%s' is not valid.", optarg);
ee48dbd5
NC		 1035 break;
1036
f170852a 1037 case 'h':
fa0f4d8a 1038 arg_action = ACTION_HELP;
f170852a
LP		 1039 break;
1040
1d2e23ab
LP		 1041 case 'D':
1042 log_set_max_level(LOG_DEBUG);
1043 break;
1044
099663ff
LP		 1045 case 'b':
1046 case 's':
1047 case 'z':
1048 /* Just to eat away the sysvinit kernel
1049 * cmdline args without getopt() error
1050 * messages that we'll parse in
1051 * parse_proc_cmdline_word() or ignore. */
f170852a 1052
099663ff 1053 case '?':
df0ff127 1054 if (getpid_cached() != 1)
099663ff 1055 return -EINVAL;
601185b4
ZJS		 1056 else
1057 return 0;
099663ff 1058
601185b4
ZJS		 1059 default:
1060 assert_not_reached("Unhandled option code.");
f170852a
LP		 1061 }
1062
df0ff127 1063 if (optind < argc && getpid_cached() != 1) {
d821e6d6
LP		 1064 /* Hmm, when we aren't run as init system
1065 * let's complain about excess arguments */
1066
1067 log_error("Excess arguments.");
1068 return -EINVAL;
1069 }
1070
f170852a
LP		 1071 return 0;
1072}
1073
1074static int help(void) {
1075
2e33c433 1076 printf("%s [OPTIONS...]\n\n"
af2d49f7 1077 "Starts up and maintains the system or user services.\n\n"
e537352b 1078 " -h --help Show this help\n"
cb4069d9 1079 " --version Show version\n"
e537352b 1080 " --test Determine startup sequence, dump it and exit\n"
b87c2aa6 1081 " --no-pager Do not pipe output into a pager\n"
80876c20 1082 " --dump-configuration-items Dump understood unit configuration items\n"
bbc1acab 1083 " --dump-bus-properties Dump exposed bus properties\n"
9e58ff9c 1084 " --unit=UNIT Set default unit\n"
edb9aaa8 1085 " --system Run a system instance, even if PID != 1\n"
af2d49f7 1086 " --user Run a user instance\n"
b9e74c39
LP		 1087 " --dump-core[=BOOL] Dump core on crash\n"
1088 " --crash-vt=NR Change to specified VT on crash\n"
1089 " --crash-reboot[=BOOL] Reboot on crash\n"
1090 " --crash-shell[=BOOL] Run shell on crash\n"
1091 " --confirm-spawn[=BOOL] Ask for confirmation when spawning processes\n"
1092 " --show-status[=BOOL] Show status updates on the console during bootup\n"
c1dc6153 1093 " --log-target=TARGET Set log target (console, journal, kmsg, journal-or-kmsg, null)\n"
9e58ff9c 1094 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
b9e74c39
LP		 1095 " --log-color[=BOOL] Highlight important log messages\n"
1096 " --log-location[=BOOL] Include code location in log messages\n"
0a494f1f
LP		 1097 " --default-standard-output= Set default standard output for services\n"
1098 " --default-standard-error= Set default standard error output for services\n",
5b6319dc 1099 program_invocation_short_name);
f170852a
LP		 1100
1101 return 0;
1102}
1103
b3680f49 1104static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds, bool switching_root) {
48b90859
LP		 1105 _cleanup_fdset_free_ FDSet *fds = NULL;
1106 _cleanup_fclose_ FILE *f = NULL;
a16e1123
LP		 1107 int r;
1108
1109 assert(m);
1110 assert(_f);
1111 assert(_fds);
1112
6b78f9b4 1113 r = manager_open_serialization(m, &f);
48b90859
LP		 1114 if (r < 0)
1115 return log_error_errno(r, "Failed to create serialization file: %m");
a16e1123 1116
71445ae7 1117 /* Make sure nothing is really destructed when we shut down */
313cefa1 1118 m->n_reloading++;
718db961 1119 bus_manager_send_reloading(m, true);
71445ae7 1120
6b78f9b4 1121 fds = fdset_new();
48b90859
LP		 1122 if (!fds)
1123 return log_oom();
a16e1123 1124
b3680f49 1125 r = manager_serialize(m, f, fds, switching_root);
48b90859
LP		 1126 if (r < 0)
1127 return log_error_errno(r, "Failed to serialize state: %m");
a16e1123 1128
48b90859
LP		 1129 if (fseeko(f, 0, SEEK_SET) == (off_t) -1)
1130 return log_error_errno(errno, "Failed to rewind serialization fd: %m");
a16e1123 1131
6b78f9b4 1132 r = fd_cloexec(fileno(f), false);
48b90859
LP		 1133 if (r < 0)
1134 return log_error_errno(r, "Failed to disable O_CLOEXEC for serialization: %m");
a16e1123 1135
6b78f9b4 1136 r = fdset_cloexec(fds, false);
48b90859
LP		 1137 if (r < 0)
1138 return log_error_errno(r, "Failed to disable O_CLOEXEC for serialization fds: %m");
a16e1123 1139
1cc6c93a
YW		 1140 *_f = TAKE_PTR(f);
1141 *_fds = TAKE_PTR(fds);
a16e1123 1142
48b90859 1143 return 0;
a16e1123
LP		 1144}
1145
4096d6f5 1146static int bump_rlimit_nofile(struct rlimit *saved_rlimit) {
9264cc39 1147 int r, nr;
4096d6f5
LP		 1148
1149 assert(saved_rlimit);
1150
1151 /* Save the original RLIMIT_NOFILE so that we can reset it
1152 * later when transitioning from the initrd to the main
1153 * systemd or suchlike. */
4a62c710 1154 if (getrlimit(RLIMIT_NOFILE, saved_rlimit) < 0)
3ce40911 1155 return log_warning_errno(errno, "Reading RLIMIT_NOFILE failed, ignoring: %m");
4096d6f5
LP		 1156
1157 /* Make sure forked processes get the default kernel setting */
1158 if (!arg_default_rlimit[RLIMIT_NOFILE]) {
1159 struct rlimit *rl;
1160
1161 rl = newdup(struct rlimit, saved_rlimit, 1);
1162 if (!rl)
1163 return log_oom();
1164
1165 arg_default_rlimit[RLIMIT_NOFILE] = rl;
1166 }
1167
9264cc39
LP		 1168 /* Bump up the resource limit for ourselves substantially, all the way to the maximum the kernel allows */
1169 nr = read_nr_open();
1170 r = setrlimit_closest(RLIMIT_NOFILE, &RLIMIT_MAKE_CONST(nr));
23bbb0de 1171 if (r < 0)
3ce40911 1172 return log_warning_errno(r, "Setting RLIMIT_NOFILE failed, ignoring: %m");
4096d6f5
LP		 1173
1174 return 0;
1175}
1176
fb3ae275
LP		 1177static int bump_rlimit_memlock(struct rlimit *saved_rlimit) {
1178 int r;
1179
1180 assert(saved_rlimit);
1181 assert(getuid() == 0);
1182
1183 /* BPF_MAP_TYPE_LPM_TRIE bpf maps are charged against RLIMIT_MEMLOCK, even though we have CAP_IPC_LOCK which
1184 * should normally disable such checks. We need them to implement IPAccessAllow= and IPAccessDeny=, hence let's
1185 * bump the value high enough for the root user. */
1186
1187 if (getrlimit(RLIMIT_MEMLOCK, saved_rlimit) < 0)
1188 return log_warning_errno(errno, "Reading RLIMIT_MEMLOCK failed, ignoring: %m");
1189
1190 r = setrlimit_closest(RLIMIT_MEMLOCK, &RLIMIT_MAKE_CONST(1024ULL*1024ULL*16ULL));
1191 if (r < 0)
1192 return log_warning_errno(r, "Setting RLIMIT_MEMLOCK failed, ignoring: %m");
1193
1194 return 0;
1195}
1196
80758717 1197static void test_usr(void) {
80758717 1198
ed1c99fc 1199 /* Check that /usr is not a separate fs */
80758717 1200
871c44a7
LP		 1201 if (dir_is_empty("/usr") <= 0)
1202 return;
1203
8b173b5e 1204 log_warning("/usr appears to be on its own filesystem and is not already mounted. This is not a supported setup. "
871c44a7
LP		 1205 "Some things will probably break (sometimes even silently) in mysterious ways. "
1206 "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
1207}
1208
d3b1c508 1209static int enforce_syscall_archs(Set *archs) {
349cc4a5 1210#if HAVE_SECCOMP
d3b1c508
LP		 1211 int r;
1212
83f12b27
FS		 1213 if (!is_seccomp_available())
1214 return 0;
1215
469830d1 1216 r = seccomp_restrict_archs(arg_syscall_archs);
d3b1c508 1217 if (r < 0)
469830d1 1218 return log_error_errno(r, "Failed to enforce system call architecture restrication: %m");
d3b1c508 1219#endif
469830d1 1220 return 0;
d3b1c508
LP		 1221}
1222
b6e2f329
LP		 1223static int status_welcome(void) {
1224 _cleanup_free_ char *pretty_name = NULL, *ansi_color = NULL;
1225 int r;
1226
fd8c85c6
LP		 1227 if (arg_show_status <= 0)
1228 return 0;
1229
d58ad743
LP		 1230 r = parse_os_release(NULL,
1231 "PRETTY_NAME", &pretty_name,
1232 "ANSI_COLOR", &ansi_color,
1233 NULL);
1234 if (r < 0)
1235 log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r,
1236 "Failed to read os-release file, ignoring: %m");
b6e2f329 1237
dc9b5816
ZJS		 1238 if (log_get_show_color())
1239 return status_printf(NULL, false, false,
1240 "\nWelcome to \x1B[%sm%s\x1B[0m!\n",
1241 isempty(ansi_color) ? "1" : ansi_color,
1242 isempty(pretty_name) ? "Linux" : pretty_name);
1243 else
1244 return status_printf(NULL, false, false,
1245 "\nWelcome to %s!\n",
1246 isempty(pretty_name) ? "Linux" : pretty_name);
b6e2f329
LP		 1247}
1248
fdd25311
LP		 1249static int write_container_id(void) {
1250 const char *c;
19854865 1251 int r;
fdd25311
LP		 1252
1253 c = getenv("container");
1254 if (isempty(c))
1255 return 0;
1256
8612da97
LP		 1257 RUN_WITH_UMASK(0022)
1258 r = write_string_file("/run/systemd/container", c, WRITE_STRING_FILE_CREATE);
19854865 1259 if (r < 0)
f1f849b0 1260 return log_warning_errno(r, "Failed to write /run/systemd/container, ignoring: %m");
19854865
LP		 1261
1262 return 1;
1263}
1264
1265static int bump_unix_max_dgram_qlen(void) {
1266 _cleanup_free_ char *qlen = NULL;
1267 unsigned long v;
1268 int r;
1269
3130fca5
LP		 1270 /* Let's bump the net.unix.max_dgram_qlen sysctl. The kernel default of 16 is simply too low. We set the value
1271 * really really early during boot, so that it is actually applied to all our sockets, including the
1272 * $NOTIFY_SOCKET one. */
19854865
LP		 1273
1274 r = read_one_line_file("/proc/sys/net/unix/max_dgram_qlen", &qlen);
1275 if (r < 0)
1276 return log_warning_errno(r, "Failed to read AF_UNIX datagram queue length, ignoring: %m");
1277
1278 r = safe_atolu(qlen, &v);
1279 if (r < 0)
3130fca5 1280 return log_warning_errno(r, "Failed to parse AF_UNIX datagram queue length '%s', ignoring: %m", qlen);
19854865
LP		 1281
1282 if (v >= DEFAULT_UNIX_MAX_DGRAM_QLEN)
1283 return 0;
1284
3130fca5 1285 r = write_string_filef("/proc/sys/net/unix/max_dgram_qlen", 0, "%lu", DEFAULT_UNIX_MAX_DGRAM_QLEN);
19854865
LP		 1286 if (r < 0)
1287 return log_full_errno(IN_SET(r, -EROFS, -EPERM, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
1288 "Failed to bump AF_UNIX datagram queue length, ignoring: %m");
1289
1290 return 1;
fdd25311
LP		 1291}
1292
32391275
FB		 1293static int fixup_environment(void) {
1294 _cleanup_free_ char *term = NULL;
4dc63c4b 1295 const char *t;
32391275
FB		 1296 int r;
1297
43db615b
LP		 1298 /* Only fix up the environment when we are started as PID 1 */
1299 if (getpid_cached() != 1)
1300 return 0;
1301
1302 /* We expect the environment to be set correctly if run inside a container. */
84af7821
LP		 1303 if (detect_container() > 0)
1304 return 0;
1305
43db615b
LP		 1306 /* When started as PID1, the kernel uses /dev/console for our stdios and uses TERM=linux whatever the backend
1307 * device used by the console. We try to make a better guess here since some consoles might not have support
1308 * for color mode for example.
32391275 1309 *
43db615b 1310 * However if TERM was configured through the kernel command line then leave it alone. */
1d84ad94 1311 r = proc_cmdline_get_key("TERM", 0, &term);
32391275
FB		 1312 if (r < 0)
1313 return r;
32391275 1314
4dc63c4b
LP		 1315 t = term ?: default_term_for_tty("/dev/console");
1316
1317 if (setenv("TERM", t, 1) < 0)
32391275
FB		 1318 return -errno;
1319
1320 return 0;
1321}
1322
6808a0bc
LP		 1323static void redirect_telinit(int argc, char *argv[]) {
1324
1325 /* This is compatibility support for SysV, where calling init as a user is identical to telinit. */
1326
1327#if HAVE_SYSV_COMPAT
1328 if (getpid_cached() == 1)
1329 return;
1330
1331 if (!strstr(program_invocation_short_name, "init"))
1332 return;
1333
1334 execv(SYSTEMCTL_BINARY_PATH, argv);
1335 log_error_errno(errno, "Failed to exec " SYSTEMCTL_BINARY_PATH ": %m");
a45d7127 1336 exit(EXIT_FAILURE);
6808a0bc
LP		 1337#endif
1338}
1339
4a36297c
LP		 1340static int become_shutdown(
1341 const char *shutdown_verb,
7eb35049 1342 int retval) {
4a36297c
LP		 1343
1344 char log_level[DECIMAL_STR_MAX(int) + 1],
e73c54b8
JK		 1345 exit_code[DECIMAL_STR_MAX(uint8_t) + 1],
1346 timeout[DECIMAL_STR_MAX(usec_t) + 1];
4a36297c 1347
e73c54b8 1348 const char* command_line[13] = {
4a36297c
LP		 1349 SYSTEMD_SHUTDOWN_BINARY_PATH,
1350 shutdown_verb,
e73c54b8 1351 "--timeout", timeout,
4a36297c
LP		 1352 "--log-level", log_level,
1353 "--log-target",
1354 };
1355
1356 _cleanup_strv_free_ char **env_block = NULL;
e73c54b8 1357 size_t pos = 7;
4a36297c
LP		 1358 int r;
1359
7eb35049 1360 assert(shutdown_verb);
234519ae 1361 assert(!command_line[pos]);
4a36297c
LP		 1362 env_block = strv_copy(environ);
1363
1364 xsprintf(log_level, "%d", log_get_max_level());
e73c54b8 1365 xsprintf(timeout, "%" PRI_USEC "us", arg_default_timeout_stop_usec);
4a36297c
LP		 1366
1367 switch (log_get_target()) {
1368
1369 case LOG_TARGET_KMSG:
1370 case LOG_TARGET_JOURNAL_OR_KMSG:
1371 case LOG_TARGET_SYSLOG_OR_KMSG:
1372 command_line[pos++] = "kmsg";
1373 break;
1374
1375 case LOG_TARGET_NULL:
1376 command_line[pos++] = "null";
1377 break;
1378
1379 case LOG_TARGET_CONSOLE:
1380 default:
1381 command_line[pos++] = "console";
1382 break;
1383 };
1384
1385 if (log_get_show_color())
1386 command_line[pos++] = "--log-color";
1387
1388 if (log_get_show_location())
1389 command_line[pos++] = "--log-location";
1390
1391 if (streq(shutdown_verb, "exit")) {
1392 command_line[pos++] = "--exit-code";
1393 command_line[pos++] = exit_code;
1394 xsprintf(exit_code, "%d", retval);
1395 }
1396
1397 assert(pos < ELEMENTSOF(command_line));
1398
7eb35049
LP		 1399 if (streq(shutdown_verb, "reboot") &&
1400 arg_shutdown_watchdog > 0 &&
1401 arg_shutdown_watchdog != USEC_INFINITY) {
1402
4a36297c
LP		 1403 char *e;
1404
1405 /* If we reboot let's set the shutdown
1406 * watchdog and tell the shutdown binary to
1407 * repeatedly ping it */
1408 r = watchdog_set_timeout(&arg_shutdown_watchdog);
1409 watchdog_close(r < 0);
1410
1411 /* Tell the binary how often to ping, ignore failure */
1412 if (asprintf(&e, "WATCHDOG_USEC="USEC_FMT, arg_shutdown_watchdog) > 0)
8a2c1fbf
EJ		 1413 (void) strv_consume(&env_block, e);
1414
1415 if (arg_watchdog_device &&
1416 asprintf(&e, "WATCHDOG_DEVICE=%s", arg_watchdog_device) > 0)
1417 (void) strv_consume(&env_block, e);
4a36297c
LP		 1418 } else
1419 watchdog_close(true);
1420
1421 /* Avoid the creation of new processes forked by the
1422 * kernel; at this point, we will not listen to the
1423 * signals anyway */
1424 if (detect_container() <= 0)
1425 (void) cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER);
1426
1427 execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block);
1428 return -errno;
1429}
1430
e839bafd
LP		 1431static void initialize_clock(void) {
1432 int r;
1433
1434 if (clock_is_localtime(NULL) > 0) {
1435 int min;
1436
1437 /*
1438 * The very first call of settimeofday() also does a time warp in the kernel.
1439 *
1440 * In the rtc-in-local time mode, we set the kernel's timezone, and rely on external tools to take care
1441 * of maintaining the RTC and do all adjustments. This matches the behavior of Windows, which leaves
1442 * the RTC alone if the registry tells that the RTC runs in UTC.
1443 */
1444 r = clock_set_timezone(&min);
1445 if (r < 0)
1446 log_error_errno(r, "Failed to apply local time delta, ignoring: %m");
1447 else
1448 log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min);
1449
1450 } else if (!in_initrd()) {
1451 /*
1452 * Do a dummy very first call to seal the kernel's time warp magic.
1453 *
1454 * Do not call this from inside the initrd. The initrd might not carry /etc/adjtime with LOCAL, but the
1455 * real system could be set up that way. In such case, we need to delay the time-warp or the sealing
1456 * until we reach the real system.
1457 *
1458 * Do no set the kernel's timezone. The concept of local time cannot be supported reliably, the time
1459 * will jump or be incorrect at every daylight saving time change. All kernel local time concepts will
1460 * be treated as UTC that way.
1461 */
1462 (void) clock_reset_timewarp();
1463 }
1464
1465 r = clock_apply_epoch();
1466 if (r < 0)
1467 log_error_errno(r, "Current system time is before build time, but cannot correct: %m");
1468 else if (r > 0)
1469 log_info("System time before build time, advancing clock.");
1470}
1471
1e41242e 1472static void initialize_coredump(bool skip_setup) {
752bcb77 1473#if ENABLE_COREDUMP
1e41242e
LP		 1474 if (getpid_cached() != 1)
1475 return;
1476
1477 /* Don't limit the core dump size, so that coredump handlers such as systemd-coredump (which honour the limit)
1478 * will process core dumps for system services by default. */
1479 if (setrlimit(RLIMIT_CORE, &RLIMIT_MAKE_CONST(RLIM_INFINITY)) < 0)
1480 log_warning_errno(errno, "Failed to set RLIMIT_CORE: %m");
1481
1482 /* But at the same time, turn off the core_pattern logic by default, so that no coredumps are stored
1483 * until the systemd-coredump tool is enabled via sysctl. */
1484 if (!skip_setup)
e557b1a6 1485 disable_coredumps();
752bcb77 1486#endif
1e41242e
LP		 1487}
1488
3c7878f9
LP		 1489static void do_reexecute(
1490 int argc,
1491 char *argv[],
1492 const struct rlimit *saved_rlimit_nofile,
1493 const struct rlimit *saved_rlimit_memlock,
1494 FDSet *fds,
1495 const char *switch_root_dir,
1496 const char *switch_root_init,
1497 const char **ret_error_message) {
1498
1499 unsigned i, j, args_size;
1500 const char **args;
1501 int r;
1502
1503 assert(saved_rlimit_nofile);
1504 assert(saved_rlimit_memlock);
1505 assert(ret_error_message);
1506
1507 /* Close and disarm the watchdog, so that the new instance can reinitialize it, but doesn't get rebooted while
1508 * we do that */
1509 watchdog_close(true);
1510
1511 /* Reset the RLIMIT_NOFILE to the kernel default, so that the new systemd can pass the kernel default to its
1512 * child processes */
1513
1514 if (saved_rlimit_nofile->rlim_cur > 0)
1515 (void) setrlimit(RLIMIT_NOFILE, saved_rlimit_nofile);
1516 if (saved_rlimit_memlock->rlim_cur != (rlim_t) -1)
1517 (void) setrlimit(RLIMIT_MEMLOCK, saved_rlimit_memlock);
1518
1519 if (switch_root_dir) {
1520 /* Kill all remaining processes from the initrd, but don't wait for them, so that we can handle the
1521 * SIGCHLD for them after deserializing. */
e73c54b8 1522 broadcast_signal(SIGTERM, false, true, arg_default_timeout_stop_usec);
3c7878f9
LP		 1523
1524 /* And switch root with MS_MOVE, because we remove the old directory afterwards and detach it. */
1525 r = switch_root(switch_root_dir, "/mnt", true, MS_MOVE);
1526 if (r < 0)
1527 log_error_errno(r, "Failed to switch root, trying to continue: %m");
1528 }
1529
1530 args_size = MAX(6, argc+1);
1531 args = newa(const char*, args_size);
1532
1533 if (!switch_root_init) {
1534 char sfd[DECIMAL_STR_MAX(int) + 1];
1535
1536 /* First try to spawn ourselves with the right path, and with full serialization. We do this only if
1537 * the user didn't specify an explicit init to spawn. */
1538
1539 assert(arg_serialization);
1540 assert(fds);
1541
1542 xsprintf(sfd, "%i", fileno(arg_serialization));
1543
1544 i = 0;
1545 args[i++] = SYSTEMD_BINARY_PATH;
1546 if (switch_root_dir)
1547 args[i++] = "--switched-root";
1548 args[i++] = arg_system ? "--system" : "--user";
1549 args[i++] = "--deserialize";
1550 args[i++] = sfd;
1551 args[i++] = NULL;
1552
1553 assert(i <= args_size);
1554
1555 /*
1556 * We want valgrind to print its memory usage summary before reexecution. Valgrind won't do this is on
1557 * its own on exec(), but it will do it on exit(). Hence, to ensure we get a summary here, fork() off
1558 * a child, let it exit() cleanly, so that it prints the summary, and wait() for it in the parent,
1559 * before proceeding into the exec().
1560 */
1561 valgrind_summary_hack();
1562
1563 (void) execv(args[0], (char* const*) args);
1564 log_debug_errno(errno, "Failed to execute our own binary, trying fallback: %m");
1565 }
1566
1567 /* Try the fallback, if there is any, without any serialization. We pass the original argv[] and envp[]. (Well,
1568 * modulo the ordering changes due to getopt() in argv[], and some cleanups in envp[], but let's hope that
1569 * doesn't matter.) */
1570
1571 arg_serialization = safe_fclose(arg_serialization);
1572 fds = fdset_free(fds);
1573
1574 /* Reopen the console */
1575 (void) make_console_stdio();
1576
1577 for (j = 1, i = 1; j < (unsigned) argc; j++)
1578 args[i++] = argv[j];
1579 args[i++] = NULL;
1580 assert(i <= args_size);
1581
1582 /* Reenable any blocked signals, especially important if we switch from initial ramdisk to init=... */
1583 (void) reset_all_signal_handlers();
1584 (void) reset_signal_mask();
1585
1586 if (switch_root_init) {
1587 args[0] = switch_root_init;
1588 (void) execv(args[0], (char* const*) args);
1589 log_warning_errno(errno, "Failed to execute configured init, trying fallback: %m");
1590 }
1591
1592 args[0] = "/sbin/init";
1593 (void) execv(args[0], (char* const*) args);
1594 r = -errno;
1595
1596 manager_status_printf(NULL, STATUS_TYPE_EMERGENCY,
1597 ANSI_HIGHLIGHT_RED " !! " ANSI_NORMAL,
1598 "Failed to execute /sbin/init");
1599
1600 if (r == -ENOENT) {
1601 log_warning("No /sbin/init, trying fallback");
1602
1603 args[0] = "/bin/sh";
1604 args[1] = NULL;
1605 (void) execv(args[0], (char* const*) args);
1606 log_error_errno(errno, "Failed to execute /bin/sh, giving up: %m");
1607 } else
1608 log_warning_errno(r, "Failed to execute /sbin/init, giving up: %m");
1609
1610 *ret_error_message = "Failed to execute fallback shell";
1611}
1612
7eb35049
LP		 1613static int invoke_main_loop(
1614 Manager *m,
1615 bool *ret_reexecute,
1616 int *ret_retval, /* Return parameters relevant for shutting down */
1617 const char **ret_shutdown_verb, /* … */
1618 FDSet **ret_fds, /* Return parameters for reexecuting */
1619 char **ret_switch_root_dir, /* … */
1620 char **ret_switch_root_init, /* … */
1621 const char **ret_error_message) {
1622
1623 int r;
1624
1625 assert(m);
1626 assert(ret_reexecute);
1627 assert(ret_retval);
1628 assert(ret_shutdown_verb);
1629 assert(ret_fds);
1630 assert(ret_switch_root_dir);
1631 assert(ret_switch_root_init);
1632 assert(ret_error_message);
1633
1634 for (;;) {
1635 r = manager_loop(m);
1636 if (r < 0) {
1637 *ret_error_message = "Failed to run main loop";
1638 return log_emergency_errno(r, "Failed to run main loop: %m");
1639 }
1640
1641 switch (m->exit_code) {
1642
a6ecbf83 1643 case MANAGER_RELOAD: {
bda7d78b 1644 LogTarget saved_log_target;
a6ecbf83
FB		 1645 int saved_log_level;
1646
7eb35049
LP		 1647 log_info("Reloading.");
1648
bda7d78b
FB		 1649 /* First, save any overriden log level/target, then parse the configuration file, which might
1650 * change the log level to new settings. */
1651
a6ecbf83 1652 saved_log_level = m->log_level_overridden ? log_get_max_level() : -1;
bda7d78b 1653 saved_log_target = m->log_target_overridden ? log_get_target() : _LOG_TARGET_INVALID;
a6ecbf83 1654
7eb35049
LP		 1655 r = parse_config_file();
1656 if (r < 0)
1657 log_warning_errno(r, "Failed to parse config file, ignoring: %m");
1658
1659 set_manager_defaults(m);
1660
a6ecbf83
FB		 1661 if (saved_log_level >= 0)
1662 manager_override_log_level(m, saved_log_level);
bda7d78b
FB		 1663 if (saved_log_target >= 0)
1664 manager_override_log_target(m, saved_log_target);
a6ecbf83 1665
7eb35049
LP		 1666 r = manager_reload(m);
1667 if (r < 0)
1668 log_warning_errno(r, "Failed to reload, ignoring: %m");
1669
1670 break;
a6ecbf83 1671 }
7eb35049
LP		 1672
1673 case MANAGER_REEXECUTE:
1674
1675 r = prepare_reexecute(m, &arg_serialization, ret_fds, false);
1676 if (r < 0) {
1677 *ret_error_message = "Failed to prepare for reexecution";
1678 return r;
1679 }
1680
1681 log_notice("Reexecuting.");
1682
1683 *ret_reexecute = true;
1684 *ret_retval = EXIT_SUCCESS;
1685 *ret_shutdown_verb = NULL;
1686 *ret_switch_root_dir = *ret_switch_root_init = NULL;
1687
1688 return 0;
1689
1690 case MANAGER_SWITCH_ROOT:
1691 if (!m->switch_root_init) {
1692 r = prepare_reexecute(m, &arg_serialization, ret_fds, true);
1693 if (r < 0) {
1694 *ret_error_message = "Failed to prepare for reexecution";
1695 return r;
1696 }
1697 } else
1698 *ret_fds = NULL;
1699
1700 log_notice("Switching root.");
1701
1702 *ret_reexecute = true;
1703 *ret_retval = EXIT_SUCCESS;
1704 *ret_shutdown_verb = NULL;
1705
1706 /* Steal the switch root parameters */
1707 *ret_switch_root_dir = m->switch_root;
1708 *ret_switch_root_init = m->switch_root_init;
1709 m->switch_root = m->switch_root_init = NULL;
1710
1711 return 0;
1712
1713 case MANAGER_EXIT:
1714
1715 if (MANAGER_IS_USER(m)) {
1716 log_debug("Exit.");
1717
1718 *ret_reexecute = false;
1719 *ret_retval = m->return_value;
1720 *ret_shutdown_verb = NULL;
1721 *ret_fds = NULL;
1722 *ret_switch_root_dir = *ret_switch_root_init = NULL;
1723
1724 return 0;
1725 }
1726
1727 _fallthrough_;
1728 case MANAGER_REBOOT:
1729 case MANAGER_POWEROFF:
1730 case MANAGER_HALT:
1731 case MANAGER_KEXEC: {
1732 static const char * const table[_MANAGER_EXIT_CODE_MAX] = {
1733 [MANAGER_EXIT] = "exit",
1734 [MANAGER_REBOOT] = "reboot",
1735 [MANAGER_POWEROFF] = "poweroff",
1736 [MANAGER_HALT] = "halt",
1737 [MANAGER_KEXEC] = "kexec"
1738 };
1739
1740 log_notice("Shutting down.");
1741
1742 *ret_reexecute = false;
1743 *ret_retval = m->return_value;
1744 assert_se(*ret_shutdown_verb = table[m->exit_code]);
1745 *ret_fds = NULL;
1746 *ret_switch_root_dir = *ret_switch_root_init = NULL;
1747
1748 return 0;
1749 }
1750
1751 default:
1752 assert_not_reached("Unknown exit code.");
1753 }
1754 }
1755}
1756
31aef7ff
LP		 1757static void log_execution_mode(bool *ret_first_boot) {
1758 assert(ret_first_boot);
1759
1760 if (arg_system) {
1761 int v;
1762
1763 log_info(PACKAGE_STRING " running in %ssystem mode. (" SYSTEMD_FEATURES ")",
1764 arg_action == ACTION_TEST ? "test " : "" );
1765
1766 v = detect_virtualization();
1767 if (v > 0)
1768 log_info("Detected virtualization %s.", virtualization_to_string(v));
1769
1770 log_info("Detected architecture %s.", architecture_to_string(uname_architecture()));
1771
1772 if (in_initrd()) {
1773 *ret_first_boot = false;
1774 log_info("Running in initial RAM disk.");
1775 } else {
1776 /* Let's check whether we are in first boot, i.e. whether /etc is still unpopulated. We use
1777 * /etc/machine-id as flag file, for this: if it exists we assume /etc is populated, if it
1778 * doesn't it's unpopulated. This allows container managers and installers to provision a
1779 * couple of files already. If the container manager wants to provision the machine ID itself
1780 * it should pass $container_uuid to PID 1. */
1781
1782 *ret_first_boot = access("/etc/machine-id", F_OK) < 0;
1783 if (*ret_first_boot)
1784 log_info("Running with unpopulated /etc.");
1785 }
1786 } else {
b9e90f3a
LP		 1787 if (DEBUG_LOGGING) {
1788 _cleanup_free_ char *t;
31aef7ff 1789
b9e90f3a
LP		 1790 t = uid_to_name(getuid());
1791 log_debug(PACKAGE_STRING " running in %suser mode for user " UID_FMT "/%s. (" SYSTEMD_FEATURES ")",
1792 arg_action == ACTION_TEST ? " test" : "", getuid(), strna(t));
1793 }
31aef7ff
LP		 1794
1795 *ret_first_boot = false;
1796 }
1797}
1798
5afbaa36
LP		 1799static int initialize_runtime(
1800 bool skip_setup,
1801 struct rlimit *saved_rlimit_nofile,
1802 struct rlimit *saved_rlimit_memlock,
1803 const char **ret_error_message) {
1804
1805 int r;
1806
1807 assert(ret_error_message);
1808
1809 /* Sets up various runtime parameters. Many of these initializations are conditionalized:
1810 *
1811 * - Some only apply to --system instances
1812 * - Some only apply to --user instances
1813 * - Some only apply when we first start up, but not when we reexecute
1814 */
1815
2d776038
LP		 1816 if (arg_action != ACTION_RUN)
1817 return 0;
1818
3c3c6cb9
LP		 1819 if (arg_system) {
1820 /* Make sure we leave a core dump without panicing the kernel. */
1821 install_crash_handler();
5afbaa36 1822
3c3c6cb9
LP		 1823 if (!skip_setup) {
1824 r = mount_cgroup_controllers(arg_join_controllers);
1825 if (r < 0) {
1826 *ret_error_message = "Failed to mount cgroup hierarchies";
1827 return r;
1828 }
1829
1830 status_welcome();
1831 hostname_setup();
1832 machine_id_setup(NULL, arg_machine_id, NULL);
1833 loopback_setup();
1834 bump_unix_max_dgram_qlen();
1835 test_usr();
1836 write_container_id();
1837 }
8a2c1fbf 1838
3c3c6cb9
LP		 1839 if (arg_watchdog_device) {
1840 r = watchdog_set_device(arg_watchdog_device);
1841 if (r < 0)
1842 log_warning_errno(r, "Failed to set watchdog device to %s, ignoring: %m", arg_watchdog_device);
1843 }
1844
1845 if (arg_runtime_watchdog > 0 && arg_runtime_watchdog != USEC_INFINITY)
1846 watchdog_set_timeout(&arg_runtime_watchdog);
1847 }
5afbaa36
LP		 1848
1849 if (arg_timer_slack_nsec != NSEC_INFINITY)
1850 if (prctl(PR_SET_TIMERSLACK, arg_timer_slack_nsec) < 0)
3a671cd1 1851 log_warning_errno(errno, "Failed to adjust timer slack, ignoring: %m");
5afbaa36
LP		 1852
1853 if (arg_system && !cap_test_all(arg_capability_bounding_set)) {
1854 r = capability_bounding_set_drop_usermode(arg_capability_bounding_set);
1855 if (r < 0) {
1856 *ret_error_message = "Failed to drop capability bounding set of usermode helpers";
1857 return log_emergency_errno(r, "Failed to drop capability bounding set of usermode helpers: %m");
1858 }
1859
1860 r = capability_bounding_set_drop(arg_capability_bounding_set, true);
1861 if (r < 0) {
1862 *ret_error_message = "Failed to drop capability bounding set";
1863 return log_emergency_errno(r, "Failed to drop capability bounding set: %m");
1864 }
1865 }
1866
39362f6f
JB		 1867 if (arg_system && arg_no_new_privs) {
1868 if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) < 0) {
1869 *ret_error_message = "Failed to disable new privileges";
1870 return log_emergency_errno(errno, "Failed to disable new privileges: %m");
1871 }
1872 }
1873
5afbaa36
LP		 1874 if (arg_syscall_archs) {
1875 r = enforce_syscall_archs(arg_syscall_archs);
1876 if (r < 0) {
1877 *ret_error_message = "Failed to set syscall architectures";
1878 return r;
1879 }
1880 }
1881
1882 if (!arg_system)
1883 /* Become reaper of our children */
1884 if (prctl(PR_SET_CHILD_SUBREAPER, 1) < 0)
1885 log_warning_errno(errno, "Failed to make us a subreaper: %m");
1886
1887 if (arg_system) {
1888 /* Bump up RLIMIT_NOFILE for systemd itself */
1889 (void) bump_rlimit_nofile(saved_rlimit_nofile);
1890 (void) bump_rlimit_memlock(saved_rlimit_memlock);
1891 }
1892
1893 return 0;
1894}
1895
6acca5fc
LP		 1896static int do_queue_default_job(
1897 Manager *m,
1898 const char **ret_error_message) {
1899
1900 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1901 Job *default_unit_job;
1902 Unit *target = NULL;
1903 int r;
1904
1905 log_debug("Activating default unit: %s", arg_default_unit);
1906
4109ede7
ZJS		 1907 r = manager_load_startable_unit_or_warn(m, arg_default_unit, NULL, &target);
1908 if (r < 0) {
1909 log_info("Falling back to rescue target: " SPECIAL_RESCUE_TARGET);
6acca5fc 1910
4109ede7 1911 r = manager_load_startable_unit_or_warn(m, SPECIAL_RESCUE_TARGET, NULL, &target);
6acca5fc 1912 if (r < 0) {
4109ede7
ZJS		 1913 *ret_error_message = r == -ERFKILL ? "Rescue target masked"
1914 : "Failed to load rescue target";
1915 return r;
6acca5fc
LP		 1916 }
1917 }
1918
1919 assert(target->load_state == UNIT_LOADED);
1920
1921 r = manager_add_job(m, JOB_START, target, JOB_ISOLATE, &error, &default_unit_job);
1922 if (r == -EPERM) {
1923 log_debug_errno(r, "Default target could not be isolated, starting instead: %s", bus_error_message(&error, r));
1924
1925 sd_bus_error_free(&error);
1926
1927 r = manager_add_job(m, JOB_START, target, JOB_REPLACE, &error, &default_unit_job);
1928 if (r < 0) {
1929 *ret_error_message = "Failed to start default target";
1930 return log_emergency_errno(r, "Failed to start default target: %s", bus_error_message(&error, r));
1931 }
1932
1933 } else if (r < 0) {
1934 *ret_error_message = "Failed to isolate default target";
1935 return log_emergency_errno(r, "Failed to isolate default target: %s", bus_error_message(&error, r));
1936 }
1937
1938 m->default_unit_job_id = default_unit_job->id;
1939
1940 return 0;
1941}
1942
970777b5 1943static void free_arguments(void) {
970777b5
LP		 1944
1945 /* Frees all arg_* variables, with the exception of arg_serialization */
ef59409f 1946 rlimit_free_all(arg_default_rlimit);
970777b5
LP		 1947
1948 arg_default_unit = mfree(arg_default_unit);
1949 arg_confirm_spawn = mfree(arg_confirm_spawn);
1950 arg_join_controllers = strv_free_free(arg_join_controllers);
1951 arg_default_environment = strv_free(arg_default_environment);
1952 arg_syscall_archs = set_free(arg_syscall_archs);
1953}
1954
97d1fb94
LP		 1955static int load_configuration(int argc, char **argv, const char **ret_error_message) {
1956 int r;
1957
1958 assert(ret_error_message);
1959
1960 arg_default_tasks_max = system_tasks_max_scale(DEFAULT_TASKS_MAX_PERCENTAGE, 100U);
1961
1962 r = parse_config_file();
1963 if (r < 0) {
1964 *ret_error_message = "Failed to parse config file";
1965 return r;
1966 }
1967
1968 if (arg_system) {
1969 r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, 0);
1970 if (r < 0)
1971 log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
1972 }
1973
1974 /* Note that this also parses bits from the kernel command line, including "debug". */
1975 log_parse_environment();
1976
1977 r = parse_argv(argc, argv);
1978 if (r < 0) {
1979 *ret_error_message = "Failed to parse commandline arguments";
1980 return r;
1981 }
1982
1983 /* Initialize default unit */
1984 if (!arg_default_unit) {
1985 arg_default_unit = strdup(SPECIAL_DEFAULT_TARGET);
1986 if (!arg_default_unit) {
1987 *ret_error_message = "Failed to set default unit";
1988 return log_oom();
1989 }
1990 }
1991
db33214b
LP		 1992 /* Initialize the show status setting if it hasn't been set explicitly yet */
1993 if (arg_show_status == _SHOW_STATUS_UNSET)
1994 arg_show_status = SHOW_STATUS_YES;
1995
97d1fb94
LP		 1996 return 0;
1997}
1998
b0d7c989
LP		 1999static int safety_checks(void) {
2000
febf46a4
LP		 2001 if (getpid_cached() == 1 &&
2002 arg_action != ACTION_RUN) {
2003 log_error("Unsupported execution mode while PID 1.");
2004 return -EPERM;
2005 }
2006
2007 if (getpid_cached() == 1 &&
2008 !arg_system) {
2009 log_error("Can't run --user mode as PID 1.");
2010 return -EPERM;
2011 }
2012
2013 if (arg_action == ACTION_RUN &&
2014 arg_system &&
2015 getpid_cached() != 1) {
2016 log_error("Can't run system mode unless PID 1.");
2017 return -EPERM;
2018 }
2019
b0d7c989
LP		 2020 if (arg_action == ACTION_TEST &&
2021 geteuid() == 0) {
2022 log_error("Don't run test mode as root.");
2023 return -EPERM;
2024 }
2025
2026 if (!arg_system &&
2027 arg_action == ACTION_RUN &&
2028 sd_booted() <= 0) {
2029 log_error("Trying to run as user instance, but the system has not been booted with systemd.");
2030 return -EOPNOTSUPP;
2031 }
2032
2033 if (!arg_system &&
2034 arg_action == ACTION_RUN &&
2035 !getenv("XDG_RUNTIME_DIR")) {
2036 log_error("Trying to run as user instance, but $XDG_RUNTIME_DIR is not set.");
2037 return -EUNATCH;
2038 }
2039
2040 if (arg_system &&
2041 arg_action == ACTION_RUN &&
2042 running_in_chroot() > 0) {
2043 log_error("Cannot be run in a chroot() environment.");
2044 return -EOPNOTSUPP;
2045 }
2046
2047 return 0;
2048}
2049
74da609f
LP		 2050static int initialize_security(
2051 bool *loaded_policy,
2052 dual_timestamp *security_start_timestamp,
2053 dual_timestamp *security_finish_timestamp,
2054 const char **ret_error_message) {
2055
2056 int r;
2057
2058 assert(loaded_policy);
2059 assert(security_start_timestamp);
2060 assert(security_finish_timestamp);
2061 assert(ret_error_message);
2062
2063 dual_timestamp_get(security_start_timestamp);
2064
97149f40 2065 r = mac_selinux_setup(loaded_policy);
74da609f
LP		 2066 if (r < 0) {
2067 *ret_error_message = "Failed to load SELinux policy";
2068 return r;
2069 }
2070
2071 r = mac_smack_setup(loaded_policy);
2072 if (r < 0) {
2073 *ret_error_message = "Failed to load SMACK policy";
2074 return r;
2075 }
2076
2077 r = ima_setup();
2078 if (r < 0) {
2079 *ret_error_message = "Failed to load IMA policy";
2080 return r;
2081 }
2082
2083 dual_timestamp_get(security_finish_timestamp);
2084 return 0;
2085}
2086
263162da
LP		 2087static void test_summary(Manager *m) {
2088 assert(m);
2089
2090 printf("-> By units:\n");
2091 manager_dump_units(m, stdout, "\t");
2092
2093 printf("-> By jobs:\n");
2094 manager_dump_jobs(m, stdout, "\t");
2095}
2096
efeb853f
LP		 2097static int collect_fds(FDSet **ret_fds, const char **ret_error_message) {
2098 int r;
2099
2100 assert(ret_fds);
2101 assert(ret_error_message);
2102
2103 r = fdset_new_fill(ret_fds);
2104 if (r < 0) {
2105 *ret_error_message = "Failed to allocate fd set";
2106 return log_emergency_errno(r, "Failed to allocate fd set: %m");
2107 }
2108
2109 fdset_cloexec(*ret_fds, true);
2110
2111 if (arg_serialization)
2112 assert_se(fdset_remove(*ret_fds, fileno(arg_serialization)) >= 0);
2113
2114 return 0;
2115}
2116
2e51b31c
LP		 2117static void setup_console_terminal(bool skip_setup) {
2118
2119 if (!arg_system)
2120 return;
2121
2122 /* Become a session leader if we aren't one yet. */
2123 (void) setsid();
2124
2125 /* If we are init, we connect stdin/stdout/stderr to /dev/null and make sure we don't have a controlling
2126 * tty. */
2127 (void) release_terminal();
2128
2129 /* Reset the console, but only if this is really init and we are freshly booted */
2130 if (getpid_cached() == 1 && !skip_setup)
2131 (void) console_setup();
2132}
2133
aa40ff07
LP		 2134static bool early_skip_setup_check(int argc, char *argv[]) {
2135 bool found_deserialize = false;
2136 int i;
2137
2138 /* Determine if this is a reexecution or normal bootup. We do the full command line parsing much later, so
2139 * let's just have a quick peek here. Note that if we have switched root, do all the special setup things
2140 * anyway, even if in that case we also do deserialization. */
2141
2142 for (i = 1; i < argc; i++) {
aa40ff07
LP		 2143 if (streq(argv[i], "--switched-root"))
2144 return false; /* If we switched root, don't skip the setup. */
2145 else if (streq(argv[i], "--deserialize"))
2146 found_deserialize = true;
2147 }
2148
2149 return found_deserialize; /* When we are deserializing, then we are reexecuting, hence avoid the extensive setup */
2150}
2151
60918275 2152int main(int argc, char *argv[]) {
625e8690
LP		 2153
2154 dual_timestamp initrd_timestamp = DUAL_TIMESTAMP_NULL, userspace_timestamp = DUAL_TIMESTAMP_NULL, kernel_timestamp = DUAL_TIMESTAMP_NULL,
2155 security_start_timestamp = DUAL_TIMESTAMP_NULL, security_finish_timestamp = DUAL_TIMESTAMP_NULL;
2156 struct rlimit saved_rlimit_nofile = RLIMIT_MAKE_CONST(0), saved_rlimit_memlock = RLIMIT_MAKE_CONST((rlim_t) -1);
2157 bool skip_setup, loaded_policy = false, queue_default_job = false, first_boot = false, reexecute = false;
2158 char *switch_root_dir = NULL, *switch_root_init = NULL;
9d76d730 2159 usec_t before_startup, after_startup;
625e8690 2160 static char systemd[] = "systemd";
9d76d730 2161 char timespan[FORMAT_TIMESPAN_MAX];
625e8690
LP		 2162 const char *shutdown_verb = NULL, *error_message = NULL;
2163 int r, retval = EXIT_FAILURE;
2164 Manager *m = NULL;
a16e1123 2165 FDSet *fds = NULL;
27b14a22 2166
d72a8f10 2167 /* SysV compatibility: redirect init → telinit */
6808a0bc 2168 redirect_telinit(argc, argv);
2cb1a60d 2169
d72a8f10 2170 /* Take timestamps early on */
c3a170f3
HH		 2171 dual_timestamp_from_monotonic(&kernel_timestamp, 0);
2172 dual_timestamp_get(&userspace_timestamp);
2173
d72a8f10
LP		 2174 /* Figure out whether we need to do initialize the system, or if we already did that because we are
2175 * reexecuting */
aa40ff07 2176 skip_setup = early_skip_setup_check(argc, argv);
d03bc1b8 2177
d72a8f10
LP		 2178 /* If we get started via the /sbin/init symlink then we are called 'init'. After a subsequent reexecution we
2179 * are then called 'systemd'. That is confusing, hence let's call us systemd right-away. */
f3b6a3ed 2180 program_invocation_short_name = systemd;
eee8b7ab 2181 (void) prctl(PR_SET_NAME, systemd);
5d6b1584 2182
d72a8f10 2183 /* Save the original command line */
9a0e6896
LP		 2184 saved_argv = argv;
2185 saved_argc = argc;
f3b6a3ed 2186
6fdb8de4 2187 /* Make sure that if the user says "syslog" we actually log to the journal. */
c1dc6153 2188 log_set_upgrade_syslog_to_journal(true);
bbe63281 2189
df0ff127 2190 if (getpid_cached() == 1) {
48a601fe 2191 /* Disable the umask logic */
90dc8c2e
MG		 2192 umask(0);
2193
92890452
LP		 2194 /* Make sure that at least initially we do not ever log to journald/syslogd, because it might not be
2195 * activated yet (even though the log socket for it exists). */
d075092f
LP		 2196 log_set_prohibit_ipc(true);
2197
48a601fe
LP		 2198 /* Always reopen /dev/console when running as PID 1 or one of its pre-execve() children. This is
2199 * important so that we never end up logging to any foreign stderr, for example if we have to log in a
2200 * child process right before execve()'ing the actual binary, at a point in time where socket
2201 * activation stderr/stdout area already set up. */
2202 log_set_always_reopen_console(true);
48a601fe 2203
92890452 2204 if (detect_container() <= 0) {
4f8d551f 2205
92890452
LP		 2206 /* Running outside of a container as PID 1 */
2207 arg_system = true;
2208 log_set_target(LOG_TARGET_KMSG);
2209 log_open();
a866073d 2210
92890452
LP		 2211 if (in_initrd())
2212 initrd_timestamp = userspace_timestamp;
c3ba6250 2213
92890452
LP		 2214 if (!skip_setup) {
2215 r = mount_setup_early();
2216 if (r < 0) {
2217 error_message = "Failed to mount early API filesystems";
2218 goto finish;
2219 }
2220
2221 r = initialize_security(
2222 &loaded_policy,
2223 &security_start_timestamp,
2224 &security_finish_timestamp,
2225 &error_message);
2226 if (r < 0)
2227 goto finish;
d723cd65 2228 }
eee8b7ab 2229
92890452
LP		 2230 if (mac_selinux_init() < 0) {
2231 error_message = "Failed to initialize SELinux policy";
96694e99 2232 goto finish;
92890452 2233 }
0b3325e7 2234
92890452
LP		 2235 if (!skip_setup)
2236 initialize_clock();
2237
2238 /* Set the default for later on, but don't actually open the logs like this for now. Note that
2239 * if we are transitioning from the initrd there might still be journal fd open, and we
2240 * shouldn't attempt opening that before we parsed /proc/cmdline which might redirect output
2241 * elsewhere. */
2242 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
2243
2244 } else {
2245 /* Running inside a container, as PID 1 */
2246 arg_system = true;
2247 log_set_target(LOG_TARGET_CONSOLE);
2248 log_open();
2249
2250 /* For later on, see above... */
2251 log_set_target(LOG_TARGET_JOURNAL);
2252
2253 /* clear the kernel timestamp,
2254 * because we are in a container */
2255 kernel_timestamp = DUAL_TIMESTAMP_NULL;
cb6531be 2256 }
7948c4df 2257
92890452 2258 initialize_coredump(skip_setup);
a866073d 2259
92890452
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 }
a866073d 2266
c3a170f3 2267 } else {
a866073d 2268 /* Running as user instance */
463d0d15 2269 arg_system = false;
eeecf6e6 2270 log_set_target(LOG_TARGET_AUTO);
871e5809 2271 log_open();
c3a170f3
HH		 2272
2273 /* clear the kernel timestamp,
2274 * because we are not PID 1 */
6513d561 2275 kernel_timestamp = DUAL_TIMESTAMP_NULL;
bbe63281 2276 }
a5dab5ce 2277
6edefe0b 2278 if (arg_system) {
92890452
LP		 2279 /* Try to figure out if we can use colors with the console. No need to do that for user instances since
2280 * they never log into the console. */
3a18b604 2281 log_show_color(colors_enabled());
92890452 2282
c76cf844
AK		 2283 r = make_null_stdio();
2284 if (r < 0)
92890452 2285 log_warning_errno(r, "Failed to redirect standard streams to /dev/null, ignoring: %m");
3a18b604
FB		 2286 }
2287
f170852a
LP		 2288 /* Mount /proc, /sys and friends, so that /proc/cmdline and
2289 * /proc/$PID/fd is available. */
df0ff127 2290 if (getpid_cached() == 1) {
f84f9974 2291
a132bef0 2292 /* Load the kernel modules early. */
2e75e2a8
DM		 2293 if (!skip_setup)
2294 kmod_setup();
2e75e2a8 2295
0c85a4f3 2296 r = mount_setup(loaded_policy);
cb6531be
ZJS		 2297 if (r < 0) {
2298 error_message = "Failed to mount API filesystems";
8efe3c01 2299 goto finish;
cb6531be 2300 }
0c85a4f3 2301 }
4ade7963
LP		 2302
2303 /* Reset all signal handlers. */
ce30c8dc
LP		 2304 (void) reset_all_signal_handlers();
2305 (void) ignore_signals(SIGNALS_IGNORE, -1);
078e4539 2306
97d1fb94
LP		 2307 r = load_configuration(argc, argv, &error_message);
2308 if (r < 0)
f170852a 2309 goto finish;
10c961b9 2310
b0d7c989
LP		 2311 r = safety_checks();
2312 if (r < 0)
fe783b03 2313 goto finish;
fe783b03 2314
bbc1acab 2315 if (IN_SET(arg_action, ACTION_TEST, ACTION_HELP, ACTION_DUMP_CONFIGURATION_ITEMS, ACTION_DUMP_BUS_PROPERTIES))
ee5324aa 2316 (void) pager_open(arg_no_pager, false);
b0d7c989
LP		 2317
2318 if (arg_action != ACTION_RUN)
74e7579c 2319 skip_setup = true;
b87c2aa6 2320
fa0f4d8a 2321 if (arg_action == ACTION_HELP) {
f170852a
LP		 2322 retval = help();
2323 goto finish;
9ba0bc4e
ZJS		 2324 } else if (arg_action == ACTION_VERSION) {
2325 retval = version();
2326 goto finish;
fa0f4d8a 2327 } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
e537352b 2328 unit_dump_config_items(stdout);
22f4096c 2329 retval = EXIT_SUCCESS;
e537352b 2330 goto finish;
bbc1acab
YW		 2331 } else if (arg_action == ACTION_DUMP_BUS_PROPERTIES) {
2332 dump_bus_properties(stdout);
2333 retval = EXIT_SUCCESS;
2334 goto finish;
f170852a
LP		 2335 }
2336
4c701096 2337 assert_se(IN_SET(arg_action, ACTION_RUN, ACTION_TEST));
f170852a 2338
5a2e0c62
LP		 2339 /* Move out of the way, so that we won't block unmounts */
2340 assert_se(chdir("/") == 0);
2341
dea374e8 2342 if (arg_action == ACTION_RUN) {
a70c72a0 2343
efeb853f 2344 /* Close logging fds, in order not to confuse collecting passed fds and terminal logic below */
a70c72a0
LP		 2345 log_close();
2346
2347 /* Remember open file descriptors for later deserialization */
efeb853f
LP		 2348 r = collect_fds(&fds, &error_message);
2349 if (r < 0)
dea374e8 2350 goto finish;
a16e1123 2351
2e51b31c
LP		 2352 /* Give up any control of the console, but make sure its initialized. */
2353 setup_console_terminal(skip_setup);
56d96fc0 2354
a70c72a0
LP		 2355 /* Open the logging devices, if possible and necessary */
2356 log_open();
56d96fc0 2357 }
4ade7963 2358
31aef7ff 2359 log_execution_mode(&first_boot);
a5dab5ce 2360
2d776038
LP		 2361 r = initialize_runtime(skip_setup,
2362 &saved_rlimit_nofile,
2363 &saved_rlimit_memlock,
2364 &error_message);
2365 if (r < 0)
2366 goto finish;
4096d6f5 2367
e0a3da1f
ZJS		 2368 r = manager_new(arg_system ? UNIT_FILE_SYSTEM : UNIT_FILE_USER,
2369 arg_action == ACTION_TEST ? MANAGER_TEST_FULL : 0,
2370 &m);
e96d6be7 2371 if (r < 0) {
da927ba9 2372 log_emergency_errno(r, "Failed to allocate manager object: %m");
cb6531be 2373 error_message = "Failed to allocate manager object";
60918275
LP		 2374 goto finish;
2375 }
2376
9f9f0342
LP		 2377 m->timestamps[MANAGER_TIMESTAMP_KERNEL] = kernel_timestamp;
2378 m->timestamps[MANAGER_TIMESTAMP_INITRD] = initrd_timestamp;
2379 m->timestamps[MANAGER_TIMESTAMP_USERSPACE] = userspace_timestamp;
2380 m->timestamps[MANAGER_TIMESTAMP_SECURITY_START] = security_start_timestamp;
2381 m->timestamps[MANAGER_TIMESTAMP_SECURITY_FINISH] = security_finish_timestamp;
9e58ff9c 2382
85cb4151 2383 set_manager_defaults(m);
7b46fc6a 2384 set_manager_settings(m);
fd130612 2385 manager_set_first_boot(m, first_boot);
27d340c7 2386
bf4df7c3 2387 /* Remember whether we should queue the default job */
d3b1c508 2388 queue_default_job = !arg_serialization || arg_switched_root;
bf4df7c3 2389
9d76d730
LP		 2390 before_startup = now(CLOCK_MONOTONIC);
2391
d3b1c508 2392 r = manager_startup(m, arg_serialization, fds);
58f88d92 2393 if (r < 0) {
da927ba9 2394 log_error_errno(r, "Failed to fully start up daemon: %m");
cefb3eda 2395 error_message = "Failed to start up manager";
58f88d92
ZJS		 2396 goto finish;
2397 }
a16e1123 2398
6acca5fc 2399 /* This will close all file descriptors that were opened, but not claimed by any unit. */
2feceb5e 2400 fds = fdset_free(fds);
74ca738f 2401 arg_serialization = safe_fclose(arg_serialization);
bf4df7c3
LP		 2402
2403 if (queue_default_job) {
6acca5fc 2404 r = do_queue_default_job(m, &error_message);
718db961 2405 if (r < 0)
37d88da7 2406 goto finish;
6acca5fc 2407 }
ab17a050 2408
6acca5fc 2409 after_startup = now(CLOCK_MONOTONIC);
60918275 2410
6acca5fc
LP		 2411 log_full(arg_action == ACTION_TEST ? LOG_INFO : LOG_DEBUG,
2412 "Loaded units and determined initial transaction in %s.",
2413 format_timespan(timespan, sizeof(timespan), after_startup - before_startup, 100 * USEC_PER_MSEC));
07672f49 2414
6acca5fc 2415 if (arg_action == ACTION_TEST) {
263162da 2416 test_summary(m);
6acca5fc
LP		 2417 retval = EXIT_SUCCESS;
2418 goto finish;
e965d56d 2419 }
d46de8a1 2420
3046b6db
LP		 2421 (void) invoke_main_loop(m,
2422 &reexecute,
2423 &retval,
2424 &shutdown_verb,
2425 &fds,
2426 &switch_root_dir,
2427 &switch_root_init,
2428 &error_message);
f170852a 2429
60918275 2430finish:
b87c2aa6
ZJS		 2431 pager_close();
2432
92890452 2433 if (m) {
81f5fc2d 2434 arg_shutdown_watchdog = m->shutdown_watchdog;
92890452
LP		 2435 m = manager_free(m);
2436 }
60918275 2437
970777b5 2438 free_arguments();
cc56fafe 2439 mac_selinux_finish();
b2bb3dbe 2440
3c7878f9
LP		 2441 if (reexecute)
2442 do_reexecute(argc, argv,
2443 &saved_rlimit_nofile,
2444 &saved_rlimit_memlock,
2445 fds,
2446 switch_root_dir,
2447 switch_root_init,
2448 &error_message); /* This only returns if reexecution failed */
a16e1123 2449
74ca738f 2450 arg_serialization = safe_fclose(arg_serialization);
2feceb5e 2451 fds = fdset_free(fds);
a16e1123 2452
349cc4a5 2453#if HAVE_VALGRIND_VALGRIND_H
54b434b1
LP		 2454 /* If we are PID 1 and running under valgrind, then let's exit
2455 * here explicitly. valgrind will only generate nice output on
2456 * exit(), not on exec(), hence let's do the former not the
2457 * latter here. */
8a2c1fbf
EJ		 2458 if (getpid_cached() == 1 && RUNNING_ON_VALGRIND) {
2459 /* Cleanup watchdog_device strings for valgrind. We need them
2460 * in become_shutdown() so normally we cannot free them yet. */
2461 watchdog_free_device();
2462 arg_watchdog_device = mfree(arg_watchdog_device);
27fe58b7 2463 return retval;
8a2c1fbf 2464 }
54b434b1
LP		 2465#endif
2466
b9080b03 2467 if (shutdown_verb) {
7eb35049 2468 r = become_shutdown(shutdown_verb, retval);
4a36297c 2469 log_error_errno(r, "Failed to execute shutdown binary, %s: %m", getpid_cached() == 1 ? "freezing" : "quitting");
9b9881d7 2470 error_message = "Failed to execute shutdown binary";
b9080b03
FF		 2471 }
2472
8a2c1fbf
EJ		 2473 watchdog_free_device();
2474 arg_watchdog_device = mfree(arg_watchdog_device);
2475
df0ff127 2476 if (getpid_cached() == 1) {
cb6531be
ZJS		 2477 if (error_message)
2478 manager_status_printf(NULL, STATUS_TYPE_EMERGENCY,
1fc464f6 2479 ANSI_HIGHLIGHT_RED "!!!!!!" ANSI_NORMAL,
cb6531be 2480 "%s, freezing.", error_message);
b9e74c39 2481 freeze_or_reboot();
cb6531be 2482 }
c3b3c274 2483
60918275
LP		 2484 return retval;
2485}
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