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Make pager_open() return void
[thirdparty/systemd.git] / src / core / main.c
CommitLineData
db9ecf05 1/* SPDX-License-Identifier: LGPL-2.1-or-later */
a7334b09 2
60918275 3#include <errno.h>
3dfc9763 4#include <fcntl.h>
f170852a 5#include <getopt.h>
d4a402e4 6#include <linux/oom.h>
664f88a7 7#include <sys/mount.h>
3dfc9763 8#include <sys/prctl.h>
b9e74c39 9#include <sys/reboot.h>
3dfc9763 10#include <unistd.h>
349cc4a5 11#if HAVE_SECCOMP
b64a3d86
LP		 12#include <seccomp.h>
13#endif
349cc4a5 14#if HAVE_VALGRIND_VALGRIND_H
3dfc9763
LP		 15#include <valgrind/valgrind.h>
16#endif
54b434b1 17
718db961 18#include "sd-bus.h"
cf0fbc49 19#include "sd-daemon.h"
b2e7486c 20#include "sd-messages.h"
3dfc9763 21
b5efdb8a 22#include "alloc-util.h"
2ffadd3c 23#include "apparmor-setup.h"
d9d93745 24#include "architecture.h"
b1994387
ILG		 25#if HAVE_LIBBPF
26#include "bpf-lsm.h"
27#endif
3dfc9763
LP		 28#include "build.h"
29#include "bus-error.h"
30#include "bus-util.h"
430f0182 31#include "capability-util.h"
a88c5b8a 32#include "cgroup-util.h"
24efb112 33#include "clock-util.h"
3dfc9763 34#include "conf-parser.h"
618234a5 35#include "cpu-set-util.h"
3dfc9763 36#include "dbus-manager.h"
c18ecf03 37#include "dbus.h"
3dfc9763 38#include "def.h"
32429805 39#include "dev-setup.h"
c18ecf03 40#include "efi-random.h"
209b2592 41#include "efivars.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"
d247f232 50#include "hexdecoct.h"
3dfc9763
LP		 51#include "hostname-setup.h"
52#include "ima-setup.h"
53#include "killall.h"
54#include "kmod-setup.h"
eefc66aa 55#include "limits-util.h"
d7b8eec7 56#include "load-fragment.h"
3dfc9763 57#include "log.h"
b6e66135 58#include "loopback-setup.h"
b6e66135 59#include "machine-id-setup.h"
3dfc9763 60#include "manager.h"
2a341bb9 61#include "manager-dump.h"
a01ba4b2 62#include "manager-serialize.h"
32429805 63#include "mkdir.h"
3dfc9763 64#include "mount-setup.h"
d58ad743 65#include "os-util.h"
3dfc9763 66#include "pager.h"
614b022c 67#include "parse-argument.h"
6bedfcbb 68#include "parse-util.h"
7d5ceb64 69#include "path-util.h"
294bf0c3 70#include "pretty-print.h"
4e731273 71#include "proc-cmdline.h"
3dfc9763 72#include "process-util.h"
d247f232 73#include "random-util.h"
8869a0b4 74#include "raw-clone.h"
78f22b97 75#include "rlimit-util.h"
349cc4a5 76#if HAVE_SECCOMP
83f12b27
FS		 77#include "seccomp-util.h"
78#endif
b6e66135 79#include "selinux-setup.h"
3dfc9763
LP		 80#include "selinux-util.h"
81#include "signal-util.h"
ffbd2c4d 82#include "smack-setup.h"
3dfc9763 83#include "special.h"
8fcde012 84#include "stat-util.h"
15a5e950 85#include "stdio-util.h"
3dfc9763
LP		 86#include "strv.h"
87#include "switch-root.h"
a8b627aa 88#include "sysctl-util.h"
3dfc9763 89#include "terminal-util.h"
b10abe4b 90#include "time-util.h"
8612da97 91#include "umask-util.h"
b1d4f8e1 92#include "user-util.h"
9ce17593 93#include "util.h"
3dfc9763
LP		 94#include "virt.h"
95#include "watchdog.h"
b6e66135 96
7e11a95e
EV		 97#if HAS_FEATURE_ADDRESS_SANITIZER
98#include <sanitizer/lsan_interface.h>
99#endif
100
3a0f06c4
ZJS		 101#define DEFAULT_TASKS_MAX ((TasksMax) { 15U, 100U }) /* 15% */
102
f170852a
LP		 103static enum {
104 ACTION_RUN,
e965d56d 105 ACTION_HELP,
9ba0bc4e 106 ACTION_VERSION,
e537352b 107 ACTION_TEST,
bbc1acab
YW		 108 ACTION_DUMP_CONFIGURATION_ITEMS,
109 ACTION_DUMP_BUS_PROPERTIES,
5c08257b 110 ACTION_BUS_INTROSPECT,
fa0f4d8a 111} arg_action = ACTION_RUN;
fb39af4c 112
5c08257b
ZJS		 113static const char *arg_bus_introspect = NULL;
114
45250e66
LP		 115/* Those variables are initialized to 0 automatically, so we avoid uninitialized memory access. Real
116 * defaults are assigned in reset_arguments() below. */
fb39af4c
ZJS		 117static char *arg_default_unit;
118static bool arg_system;
119static bool arg_dump_core;
120static int arg_crash_chvt;
121static bool arg_crash_shell;
122static bool arg_crash_reboot;
123static char *arg_confirm_spawn;
124static ShowStatus arg_show_status;
36cf4507 125static StatusUnitFormat arg_status_unit_format;
fb39af4c
ZJS		 126static bool arg_switched_root;
127static PagerFlags arg_pager_flags;
128static bool arg_service_watchdogs;
129static ExecOutput arg_default_std_output;
130static ExecOutput arg_default_std_error;
131static usec_t arg_default_restart_usec;
132static usec_t arg_default_timeout_start_usec;
133static usec_t arg_default_timeout_stop_usec;
134static usec_t arg_default_timeout_abort_usec;
135static bool arg_default_timeout_abort_set;
136static usec_t arg_default_start_limit_interval;
137static unsigned arg_default_start_limit_burst;
138static usec_t arg_runtime_watchdog;
65224c1d 139static usec_t arg_reboot_watchdog;
acafd7d8 140static usec_t arg_kexec_watchdog;
fb39af4c
ZJS		 141static char *arg_early_core_pattern;
142static char *arg_watchdog_device;
143static char **arg_default_environment;
d55ed7de 144static char **arg_manager_environment;
fb39af4c
ZJS		 145static struct rlimit *arg_default_rlimit[_RLIMIT_MAX];
146static uint64_t arg_capability_bounding_set;
147static bool arg_no_new_privs;
148static nsec_t arg_timer_slack_nsec;
149static usec_t arg_default_timer_accuracy_usec;
150static Set* arg_syscall_archs;
151static FILE* arg_serialization;
152static int arg_default_cpu_accounting;
153static bool arg_default_io_accounting;
154static bool arg_default_ip_accounting;
155static bool arg_default_blockio_accounting;
156static bool arg_default_memory_accounting;
157static bool arg_default_tasks_accounting;
3a0f06c4 158static TasksMax arg_default_tasks_max;
fb39af4c
ZJS		 159static sd_id128_t arg_machine_id;
160static EmergencyAction arg_cad_burst_action;
161static OOMPolicy arg_default_oom_policy;
162static CPUSet arg_cpu_affinity;
b070c7c0 163static NUMAPolicy arg_numa_policy;
3753325b 164static usec_t arg_clock_usec;
d247f232
LP		 165static void *arg_random_seed;
166static size_t arg_random_seed_size;
d4a402e4
LP		 167static int arg_default_oom_score_adjust;
168static bool arg_default_oom_score_adjust_set;
61fbbac1 169
0e06a031
LP		 170/* A copy of the original environment block */
171static char **saved_env = NULL;
172
a9fd4cd1
FB		 173static int parse_configuration(const struct rlimit *saved_rlimit_nofile,
174 const struct rlimit *saved_rlimit_memlock);
4fc935ca 175
f70e6fb4
ZJS		 176static int manager_find_user_config_paths(char ***ret_files, char ***ret_dirs) {
177 _cleanup_free_ char *base = NULL;
178 _cleanup_strv_free_ char **files = NULL, **dirs = NULL;
179 int r;
180
181 r = xdg_user_config_dir(&base, "/systemd");
182 if (r < 0)
183 return r;
184
185 r = strv_extendf(&files, "%s/user.conf", base);
186 if (r < 0)
187 return r;
188
189 r = strv_extend(&files, PKGSYSCONFDIR "/user.conf");
190 if (r < 0)
191 return r;
192
193 r = strv_consume(&dirs, TAKE_PTR(base));
194 if (r < 0)
195 return r;
196
197 r = strv_extend_strv(&dirs, CONF_PATHS_STRV("systemd"), false);
198 if (r < 0)
199 return r;
200
201 *ret_files = TAKE_PTR(files);
202 *ret_dirs = TAKE_PTR(dirs);
203 return 0;
204}
205
bb259772
LP		 206_noreturn_ static void freeze_or_exit_or_reboot(void) {
207
c3b6a348
LP		 208 /* If we are running in a container, let's prefer exiting, after all we can propagate an exit code to
209 * the container manager, and thus inform it that something went wrong. */
bb259772
LP		 210 if (detect_container() > 0) {
211 log_emergency("Exiting PID 1...");
c3b6a348 212 _exit(EXIT_EXCEPTION);
bb259772 213 }
b9e74c39
LP		 214
215 if (arg_crash_reboot) {
216 log_notice("Rebooting in 10s...");
217 (void) sleep(10);
218
219 log_notice("Rebooting now...");
220 (void) reboot(RB_AUTOBOOT);
221 log_emergency_errno(errno, "Failed to reboot: %m");
222 }
223
224 log_emergency("Freezing execution.");
43cac490 225 sync();
b9e74c39
LP		 226 freeze();
227}
228
848e863a 229_noreturn_ static void crash(int sig) {
7d06dad9
MS		 230 struct sigaction sa;
231 pid_t pid;
97c4f35c 232
df0ff127 233 if (getpid_cached() != 1)
abb26902 234 /* Pass this on immediately, if this is not PID 1 */
92ca4cac 235 (void) raise(sig);
abb26902 236 else if (!arg_dump_core)
4104970e 237 log_emergency("Caught <%s>, not dumping core.", signal_to_string(sig));
97c4f35c 238 else {
7d06dad9 239 sa = (struct sigaction) {
189d5bac 240 .sa_handler = nop_signal_handler,
b92bea5d
ZJS		 241 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
242 };
97c4f35c 243
6f5e3f35 244 /* We want to wait for the core process, hence let's enable SIGCHLD */
92ca4cac 245 (void) sigaction(SIGCHLD, &sa, NULL);
6f5e3f35 246
8869a0b4 247 pid = raw_clone(SIGCHLD);
e62d8c39 248 if (pid < 0)
56f64d95 249 log_emergency_errno(errno, "Caught <%s>, cannot fork for core dump: %m", signal_to_string(sig));
97c4f35c 250 else if (pid == 0) {
97c4f35c 251 /* Enable default signal handler for core dump */
15a90032 252
92ca4cac
LP		 253 sa = (struct sigaction) {
254 .sa_handler = SIG_DFL,
255 };
256 (void) sigaction(sig, &sa, NULL);
97c4f35c 257
15a90032
LP		 258 /* Don't limit the coredump size */
259 (void) setrlimit(RLIMIT_CORE, &RLIMIT_MAKE_CONST(RLIM_INFINITY));
97c4f35c
LP		 260
261 /* Just to be sure... */
e62d9b81 262 (void) chdir("/");
97c4f35c
LP		 263
264 /* Raise the signal again */
ee05e779 265 pid = raw_getpid();
92ca4cac 266 (void) kill(pid, sig); /* raise() would kill the parent */
97c4f35c 267
04499a70 268 assert_not_reached();
bb85a582 269 _exit(EXIT_EXCEPTION);
4fc935ca 270 } else {
8e12a6ae
LP		 271 siginfo_t status;
272 int r;
4fc935ca
LP		 273
274 /* Order things nicely. */
e62d8c39
ZJS		 275 r = wait_for_terminate(pid, &status);
276 if (r < 0)
da927ba9 277 log_emergency_errno(r, "Caught <%s>, waitpid() failed: %m", signal_to_string(sig));
e1714f02
ZJS		 278 else if (status.si_code != CLD_DUMPED) {
279 const char *s = status.si_code == CLD_EXITED
e04ed6db 280 ? exit_status_to_string(status.si_status, EXIT_STATUS_LIBC)
e1714f02
ZJS		 281 : signal_to_string(status.si_status);
282
ee05e779
ZJS		 283 log_emergency("Caught <%s>, core dump failed (child "PID_FMT", code=%s, status=%i/%s).",
284 signal_to_string(sig),
e1714f02
ZJS		 285 pid,
286 sigchld_code_to_string(status.si_code),
287 status.si_status, strna(s));
288 } else
289 log_emergency("Caught <%s>, dumped core as pid "PID_FMT".",
290 signal_to_string(sig), pid);
97c4f35c
LP		 291 }
292 }
293
b9e74c39 294 if (arg_crash_chvt >= 0)
92ca4cac 295 (void) chvt(arg_crash_chvt);
601f6a1e 296
7d06dad9
MS		 297 sa = (struct sigaction) {
298 .sa_handler = SIG_IGN,
299 .sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART,
300 };
301
302 /* Let the kernel reap children for us */
303 (void) sigaction(SIGCHLD, &sa, NULL);
8c43883a 304
7d06dad9 305 if (arg_crash_shell) {
b9e74c39 306 log_notice("Executing crash shell in 10s...");
92ca4cac 307 (void) sleep(10);
4fc935ca 308
8869a0b4 309 pid = raw_clone(SIGCHLD);
cd3bd60a 310 if (pid < 0)
56f64d95 311 log_emergency_errno(errno, "Failed to fork off crash shell: %m");
6f5e3f35 312 else if (pid == 0) {
b9e74c39 313 (void) setsid();
92ca4cac 314 (void) make_console_stdio();
595225af 315 (void) rlimit_nofile_safe();
92ca4cac 316 (void) execle("/bin/sh", "/bin/sh", NULL, environ);
6f5e3f35 317
ee05e779 318 log_emergency_errno(errno, "execle() failed: %m");
bb85a582 319 _exit(EXIT_EXCEPTION);
b9e74c39
LP		 320 } else {
321 log_info("Spawned crash shell as PID "PID_FMT".", pid);
4cf0b03b 322 (void) wait_for_terminate(pid, NULL);
b9e74c39 323 }
4fc935ca
LP		 324 }
325
bb259772 326 freeze_or_exit_or_reboot();
97c4f35c
LP		 327}
328
329static void install_crash_handler(void) {
297d563d 330 static const struct sigaction sa = {
b92bea5d 331 .sa_handler = crash,
297d563d 332 .sa_flags = SA_NODEFER, /* So that we can raise the signal again from the signal handler */
b92bea5d 333 };
297d563d 334 int r;
97c4f35c 335
9c274488
LP		 336 /* We ignore the return value here, since, we don't mind if we cannot set up a crash handler */
337 r = sigaction_many(&sa, SIGNALS_CRASH_HANDLER);
297d563d
LP		 338 if (r < 0)
339 log_debug_errno(r, "I had trouble setting up the crash handler, ignoring: %m");
97c4f35c 340}
f170852a 341
56d96fc0
LP		 342static int console_setup(void) {
343 _cleanup_close_ int tty_fd = -1;
344 int r;
80876c20 345
512947d4 346 tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);
23bbb0de
MS		 347 if (tty_fd < 0)
348 return log_error_errno(tty_fd, "Failed to open /dev/console: %m");
80876c20 349
56d96fc0
LP		 350 /* We don't want to force text mode. plymouth may be showing
351 * pictures already from initrd. */
512947d4 352 r = reset_terminal_fd(tty_fd, false);
23bbb0de
MS		 353 if (r < 0)
354 return log_error_errno(r, "Failed to reset /dev/console: %m");
843d2643 355
56d96fc0 356 return 0;
80876c20
LP		 357}
358
ee48dbd5 359static int set_machine_id(const char *m) {
e042eab7 360 sd_id128_t t;
8b26cdbd 361 assert(m);
ee48dbd5 362
e042eab7 363 if (sd_id128_from_string(m, &t) < 0)
ee48dbd5
NC		 364 return -EINVAL;
365
e042eab7 366 if (sd_id128_is_null(t))
ee48dbd5
NC		 367 return -EINVAL;
368
e042eab7 369 arg_machine_id = t;
ee48dbd5
NC		 370 return 0;
371}
372
96287a49 373static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
059cb385 374 int r;
f170852a 375
059cb385 376 assert(key);
5192bd19 377
1d84ad94 378 if (STR_IN_SET(key, "systemd.unit", "rd.systemd.unit")) {
bf4df7c3 379
1d84ad94
LP		 380 if (proc_cmdline_value_missing(key, value))
381 return 0;
bf4df7c3 382
1d84ad94
LP		 383 if (!unit_name_is_valid(value, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE))
384 log_warning("Unit name specified on %s= is not valid, ignoring: %s", key, value);
cd57038a
ZJS		 385 else if (in_initrd() == !!startswith(key, "rd."))
386 return free_and_strdup_warn(&arg_default_unit, value);
f170852a 387
1d84ad94 388 } else if (proc_cmdline_key_streq(key, "systemd.dump_core")) {
4fc935ca 389
1d84ad94 390 r = value ? parse_boolean(value) : true;
fb472900 391 if (r < 0)
5e1ee764 392 log_warning_errno(r, "Failed to parse dump core switch %s, ignoring: %m", value);
4fc935ca 393 else
fa0f4d8a 394 arg_dump_core = r;
4fc935ca 395
c6885f5f
FB		 396 } else if (proc_cmdline_key_streq(key, "systemd.early_core_pattern")) {
397
398 if (proc_cmdline_value_missing(key, value))
399 return 0;
400
401 if (path_is_absolute(value))
614b022c 402 (void) parse_path_argument(value, false, &arg_early_core_pattern);
c6885f5f
FB		 403 else
404 log_warning("Specified core pattern '%s' is not an absolute path, ignoring.", value);
405
1d84ad94 406 } else if (proc_cmdline_key_streq(key, "systemd.crash_chvt")) {
b9e74c39 407
1d84ad94
LP		 408 if (!value)
409 arg_crash_chvt = 0; /* turn on */
5e1ee764 410 else {
a07a7324 411 r = parse_crash_chvt(value, &arg_crash_chvt);
5e1ee764
YW		 412 if (r < 0)
413 log_warning_errno(r, "Failed to parse crash chvt switch %s, ignoring: %m", value);
414 }
b9e74c39 415
1d84ad94 416 } else if (proc_cmdline_key_streq(key, "systemd.crash_shell")) {
4fc935ca 417
1d84ad94 418 r = value ? parse_boolean(value) : true;
fb472900 419 if (r < 0)
5e1ee764 420 log_warning_errno(r, "Failed to parse crash shell switch %s, ignoring: %m", value);
4fc935ca 421 else
fa0f4d8a 422 arg_crash_shell = r;
5e7ee61c 423
1d84ad94 424 } else if (proc_cmdline_key_streq(key, "systemd.crash_reboot")) {
5e7ee61c 425
1d84ad94 426 r = value ? parse_boolean(value) : true;
b9e74c39 427 if (r < 0)
5e1ee764 428 log_warning_errno(r, "Failed to parse crash reboot switch %s, ignoring: %m", value);
5e7ee61c 429 else
b9e74c39 430 arg_crash_reboot = r;
5e7ee61c 431
1d84ad94
LP		 432 } else if (proc_cmdline_key_streq(key, "systemd.confirm_spawn")) {
433 char *s;
7d5ceb64 434
1d84ad94 435 r = parse_confirm_spawn(value, &s);
059cb385 436 if (r < 0)
5e1ee764
YW		 437 log_warning_errno(r, "Failed to parse confirm_spawn switch %s, ignoring: %m", value);
438 else
439 free_and_replace(arg_confirm_spawn, s);
601f6a1e 440
2a12e32e
JK		 441 } else if (proc_cmdline_key_streq(key, "systemd.service_watchdogs")) {
442
443 r = value ? parse_boolean(value) : true;
444 if (r < 0)
5e1ee764 445 log_warning_errno(r, "Failed to parse service watchdog switch %s, ignoring: %m", value);
2a12e32e
JK		 446 else
447 arg_service_watchdogs = r;
448
1d84ad94 449 } else if (proc_cmdline_key_streq(key, "systemd.show_status")) {
9e58ff9c 450
1d84ad94
LP		 451 if (value) {
452 r = parse_show_status(value, &arg_show_status);
453 if (r < 0)
5e1ee764 454 log_warning_errno(r, "Failed to parse show status switch %s, ignoring: %m", value);
1d84ad94
LP		 455 } else
456 arg_show_status = SHOW_STATUS_YES;
059cb385 457
36cf4507
ZJS		 458 } else if (proc_cmdline_key_streq(key, "systemd.status_unit_format")) {
459
460 if (proc_cmdline_value_missing(key, value))
461 return 0;
462
463 r = status_unit_format_from_string(value);
464 if (r < 0)
465 log_warning_errno(r, "Failed to parse %s=%s, ignoring: %m", key, value);
466 else
467 arg_status_unit_format = r;
468
1d84ad94
LP		 469 } else if (proc_cmdline_key_streq(key, "systemd.default_standard_output")) {
470
471 if (proc_cmdline_value_missing(key, value))
472 return 0;
0a494f1f 473
059cb385 474 r = exec_output_from_string(value);
fb472900 475 if (r < 0)
5e1ee764 476 log_warning_errno(r, "Failed to parse default standard output switch %s, ignoring: %m", value);
0a494f1f
LP		 477 else
478 arg_default_std_output = r;
0a494f1f 479
1d84ad94
LP		 480 } else if (proc_cmdline_key_streq(key, "systemd.default_standard_error")) {
481
482 if (proc_cmdline_value_missing(key, value))
483 return 0;
059cb385
LP		 484
485 r = exec_output_from_string(value);
fb472900 486 if (r < 0)
5e1ee764 487 log_warning_errno(r, "Failed to parse default standard error switch %s, ignoring: %m", value);
0a494f1f
LP		 488 else
489 arg_default_std_error = r;
9e7c5357 490
1d84ad94
LP		 491 } else if (streq(key, "systemd.setenv")) {
492
493 if (proc_cmdline_value_missing(key, value))
494 return 0;
059cb385 495
b70935ac
ZJS		 496 if (!env_assignment_is_valid(value))
497 log_warning("Environment variable assignment '%s' is not valid. Ignoring.", value);
498 else {
499 r = strv_env_replace_strdup(&arg_default_environment, value);
500 if (r < 0)
1d84ad94 501 return log_oom();
b70935ac 502 }
9e58ff9c 503
1d84ad94
LP		 504 } else if (proc_cmdline_key_streq(key, "systemd.machine_id")) {
505
506 if (proc_cmdline_value_missing(key, value))
507 return 0;
508
509 r = set_machine_id(value);
510 if (r < 0)
5e1ee764 511 log_warning_errno(r, "MachineID '%s' is not valid, ignoring: %m", value);
ee48dbd5 512
1d84ad94
LP		 513 } else if (proc_cmdline_key_streq(key, "systemd.default_timeout_start_sec")) {
514
515 if (proc_cmdline_value_missing(key, value))
516 return 0;
517
518 r = parse_sec(value, &arg_default_timeout_start_usec);
519 if (r < 0)
5e1ee764 520 log_warning_errno(r, "Failed to parse default start timeout '%s', ignoring: %m", value);
1d84ad94
LP		 521
522 if (arg_default_timeout_start_usec <= 0)
523 arg_default_timeout_start_usec = USEC_INFINITY;
ee48dbd5 524
68d58f38
LP		 525 } else if (proc_cmdline_key_streq(key, "systemd.cpu_affinity")) {
526
527 if (proc_cmdline_value_missing(key, value))
528 return 0;
529
530 r = parse_cpu_set(value, &arg_cpu_affinity);
531 if (r < 0)
162392b7 532 log_warning_errno(r, "Failed to parse CPU affinity mask '%s', ignoring: %m", value);
68d58f38 533
8a2c1fbf
EJ		 534 } else if (proc_cmdline_key_streq(key, "systemd.watchdog_device")) {
535
536 if (proc_cmdline_value_missing(key, value))
537 return 0;
538
614b022c 539 (void) parse_path_argument(value, false, &arg_watchdog_device);
8a2c1fbf 540
b3aa73e4
FB		 541 } else if (proc_cmdline_key_streq(key, "systemd.watchdog_sec")) {
542
543 if (proc_cmdline_value_missing(key, value))
544 return 0;
545
8a85c5b6
FB		 546 if (streq(value, "default"))
547 arg_runtime_watchdog = USEC_INFINITY;
c91c95e6
LP		 548 else if (streq(value, "off"))
549 arg_runtime_watchdog = 0;
8a85c5b6
FB		 550 else {
551 r = parse_sec(value, &arg_runtime_watchdog);
552 if (r < 0) {
553 log_warning_errno(r, "Failed to parse systemd.watchdog_sec= argument '%s', ignoring: %m", value);
554 return 0;
555 }
556 }
557
558 arg_kexec_watchdog = arg_reboot_watchdog = arg_runtime_watchdog;
b3aa73e4 559
3753325b
LP		 560 } else if (proc_cmdline_key_streq(key, "systemd.clock_usec")) {
561
562 if (proc_cmdline_value_missing(key, value))
563 return 0;
564
565 r = safe_atou64(value, &arg_clock_usec);
566 if (r < 0)
567 log_warning_errno(r, "Failed to parse systemd.clock_usec= argument, ignoring: %s", value);
568
d247f232
LP		 569 } else if (proc_cmdline_key_streq(key, "systemd.random_seed")) {
570 void *p;
571 size_t sz;
572
573 if (proc_cmdline_value_missing(key, value))
574 return 0;
575
f5fbe71d 576 r = unbase64mem(value, SIZE_MAX, &p, &sz);
d247f232
LP		 577 if (r < 0)
578 log_warning_errno(r, "Failed to parse systemd.random_seed= argument, ignoring: %s", value);
579
580 free(arg_random_seed);
581 arg_random_seed = sz > 0 ? p : mfree(p);
582 arg_random_seed_size = sz;
583
059cb385 584 } else if (streq(key, "quiet") && !value) {
d7b15e0a 585
7a293242 586 if (arg_show_status == _SHOW_STATUS_INVALID)
0d066dd1 587 arg_show_status = SHOW_STATUS_ERROR;
059cb385
LP		 588
589 } else if (streq(key, "debug") && !value) {
d7b15e0a 590
1de1c9c3
LP		 591 /* Note that log_parse_environment() handles 'debug'
592 * too, and sets the log level to LOG_DEBUG. */
d7b15e0a 593
75f86906 594 if (detect_container() > 0)
b2103dcc 595 log_set_target(LOG_TARGET_CONSOLE);
059cb385 596
dcd61450 597 } else if (!value) {
e2c9a131 598 const char *target;
f170852a 599
ceae6295 600 /* Compatible with SysV, but supported independently even if SysV compatibility is disabled. */
e2c9a131
EV		 601 target = runlevel_to_target(key);
602 if (target)
cd57038a 603 return free_and_strdup_warn(&arg_default_unit, target);
f170852a
LP		 604 }
605
606 return 0;
607}
608
e8e581bf
ZJS		 609#define DEFINE_SETTER(name, func, descr) \
610 static int name(const char *unit, \
611 const char *filename, \
612 unsigned line, \
613 const char *section, \
71a61510 614 unsigned section_line, \
e8e581bf
ZJS		 615 const char *lvalue, \
616 int ltype, \
617 const char *rvalue, \
618 void *data, \
619 void *userdata) { \
620 \
621 int r; \
622 \
623 assert(filename); \
624 assert(lvalue); \
625 assert(rvalue); \
626 \
627 r = func(rvalue); \
628 if (r < 0) \
d1cefe0a
LP		 629 log_syntax(unit, LOG_ERR, filename, line, r, \
630 "Invalid " descr "'%s': %m", \
631 rvalue); \
e8e581bf
ZJS		 632 \
633 return 0; \
634 }
487393e9 635
a6ecbf83
FB		 636DEFINE_SETTER(config_parse_level2, log_set_max_level_from_string, "log level");
637DEFINE_SETTER(config_parse_target, log_set_target_from_string, "target");
c5673ed0 638DEFINE_SETTER(config_parse_color, log_show_color_from_string, "color");
a6ecbf83 639DEFINE_SETTER(config_parse_location, log_show_location_from_string, "location");
c5673ed0 640DEFINE_SETTER(config_parse_time, log_show_time_from_string, "time");
487393e9 641
a61d6874
ZJS		 642static int config_parse_default_timeout_abort(
643 const char *unit,
644 const char *filename,
645 unsigned line,
646 const char *section,
647 unsigned section_line,
648 const char *lvalue,
649 int ltype,
650 const char *rvalue,
651 void *data,
652 void *userdata) {
653 int r;
654
655 r = config_parse_timeout_abort(unit, filename, line, section, section_line, lvalue, ltype, rvalue,
656 &arg_default_timeout_abort_usec, userdata);
657 if (r >= 0)
658 arg_default_timeout_abort_set = r;
659 return 0;
660}
487393e9 661
d4a402e4
LP		 662static int config_parse_oom_score_adjust(
663 const char *unit,
664 const char *filename,
665 unsigned line,
666 const char *section,
667 unsigned section_line,
668 const char *lvalue,
669 int ltype,
670 const char *rvalue,
671 void *data,
672 void *userdata) {
673
674 int oa, r;
675
676 if (isempty(rvalue)) {
677 arg_default_oom_score_adjust_set = false;
678 return 0;
679 }
680
681 r = parse_oom_score_adjust(rvalue, &oa);
682 if (r < 0) {
683 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse the OOM score adjust value '%s', ignoring: %m", rvalue);
684 return 0;
685 }
686
687 arg_default_oom_score_adjust = oa;
688 arg_default_oom_score_adjust_set = true;
689
690 return 0;
691}
692
a61d6874 693static int parse_config_file(void) {
f975e971 694 const ConfigTableItem items[] = {
a61d6874
ZJS		 695 { "Manager", "LogLevel", config_parse_level2, 0, NULL },
696 { "Manager", "LogTarget", config_parse_target, 0, NULL },
697 { "Manager", "LogColor", config_parse_color, 0, NULL },
698 { "Manager", "LogLocation", config_parse_location, 0, NULL },
c5673ed0 699 { "Manager", "LogTime", config_parse_time, 0, NULL },
a61d6874
ZJS		 700 { "Manager", "DumpCore", config_parse_bool, 0, &arg_dump_core },
701 { "Manager", "CrashChVT", /* legacy */ config_parse_crash_chvt, 0, &arg_crash_chvt },
702 { "Manager", "CrashChangeVT", config_parse_crash_chvt, 0, &arg_crash_chvt },
703 { "Manager", "CrashShell", config_parse_bool, 0, &arg_crash_shell },
704 { "Manager", "CrashReboot", config_parse_bool, 0, &arg_crash_reboot },
705 { "Manager", "ShowStatus", config_parse_show_status, 0, &arg_show_status },
706 { "Manager", "StatusUnitFormat", config_parse_status_unit_format, 0, &arg_status_unit_format },
707 { "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, &arg_cpu_affinity },
708 { "Manager", "NUMAPolicy", config_parse_numa_policy, 0, &arg_numa_policy.type },
709 { "Manager", "NUMAMask", config_parse_numa_mask, 0, &arg_numa_policy },
710 { "Manager", "JoinControllers", config_parse_warn_compat, DISABLED_CONFIGURATION, NULL },
8a85c5b6
FB		 711 { "Manager", "RuntimeWatchdogSec", config_parse_watchdog_sec, 0, &arg_runtime_watchdog },
712 { "Manager", "RebootWatchdogSec", config_parse_watchdog_sec, 0, &arg_reboot_watchdog },
713 { "Manager", "ShutdownWatchdogSec", config_parse_watchdog_sec, 0, &arg_reboot_watchdog }, /* obsolete alias */
714 { "Manager", "KExecWatchdogSec", config_parse_watchdog_sec, 0, &arg_kexec_watchdog },
a61d6874
ZJS		 715 { "Manager", "WatchdogDevice", config_parse_path, 0, &arg_watchdog_device },
716 { "Manager", "CapabilityBoundingSet", config_parse_capability_set, 0, &arg_capability_bounding_set },
717 { "Manager", "NoNewPrivileges", config_parse_bool, 0, &arg_no_new_privs },
349cc4a5 718#if HAVE_SECCOMP
a61d6874 719 { "Manager", "SystemCallArchitectures", config_parse_syscall_archs, 0, &arg_syscall_archs },
89fffa27 720#endif
a61d6874
ZJS		 721 { "Manager", "TimerSlackNSec", config_parse_nsec, 0, &arg_timer_slack_nsec },
722 { "Manager", "DefaultTimerAccuracySec", config_parse_sec, 0, &arg_default_timer_accuracy_usec },
723 { "Manager", "DefaultStandardOutput", config_parse_output_restricted, 0, &arg_default_std_output },
724 { "Manager", "DefaultStandardError", config_parse_output_restricted, 0, &arg_default_std_error },
725 { "Manager", "DefaultTimeoutStartSec", config_parse_sec, 0, &arg_default_timeout_start_usec },
726 { "Manager", "DefaultTimeoutStopSec", config_parse_sec, 0, &arg_default_timeout_stop_usec },
d4a402e4 727 { "Manager", "DefaultTimeoutAbortSec", config_parse_default_timeout_abort, 0, NULL },
a61d6874
ZJS		 728 { "Manager", "DefaultRestartSec", config_parse_sec, 0, &arg_default_restart_usec },
729 { "Manager", "DefaultStartLimitInterval", config_parse_sec, 0, &arg_default_start_limit_interval }, /* obsolete alias */
730 { "Manager", "DefaultStartLimitIntervalSec", config_parse_sec, 0, &arg_default_start_limit_interval },
731 { "Manager", "DefaultStartLimitBurst", config_parse_unsigned, 0, &arg_default_start_limit_burst },
732 { "Manager", "DefaultEnvironment", config_parse_environ, 0, &arg_default_environment },
d55ed7de 733 { "Manager", "ManagerEnvironment", config_parse_environ, 0, &arg_manager_environment },
a61d6874
ZJS		 734 { "Manager", "DefaultLimitCPU", config_parse_rlimit, RLIMIT_CPU, arg_default_rlimit },
735 { "Manager", "DefaultLimitFSIZE", config_parse_rlimit, RLIMIT_FSIZE, arg_default_rlimit },
736 { "Manager", "DefaultLimitDATA", config_parse_rlimit, RLIMIT_DATA, arg_default_rlimit },
737 { "Manager", "DefaultLimitSTACK", config_parse_rlimit, RLIMIT_STACK, arg_default_rlimit },
738 { "Manager", "DefaultLimitCORE", config_parse_rlimit, RLIMIT_CORE, arg_default_rlimit },
739 { "Manager", "DefaultLimitRSS", config_parse_rlimit, RLIMIT_RSS, arg_default_rlimit },
740 { "Manager", "DefaultLimitNOFILE", config_parse_rlimit, RLIMIT_NOFILE, arg_default_rlimit },
741 { "Manager", "DefaultLimitAS", config_parse_rlimit, RLIMIT_AS, arg_default_rlimit },
742 { "Manager", "DefaultLimitNPROC", config_parse_rlimit, RLIMIT_NPROC, arg_default_rlimit },
743 { "Manager", "DefaultLimitMEMLOCK", config_parse_rlimit, RLIMIT_MEMLOCK, arg_default_rlimit },
744 { "Manager", "DefaultLimitLOCKS", config_parse_rlimit, RLIMIT_LOCKS, arg_default_rlimit },
745 { "Manager", "DefaultLimitSIGPENDING", config_parse_rlimit, RLIMIT_SIGPENDING, arg_default_rlimit },
746 { "Manager", "DefaultLimitMSGQUEUE", config_parse_rlimit, RLIMIT_MSGQUEUE, arg_default_rlimit },
747 { "Manager", "DefaultLimitNICE", config_parse_rlimit, RLIMIT_NICE, arg_default_rlimit },
748 { "Manager", "DefaultLimitRTPRIO", config_parse_rlimit, RLIMIT_RTPRIO, arg_default_rlimit },
749 { "Manager", "DefaultLimitRTTIME", config_parse_rlimit, RLIMIT_RTTIME, arg_default_rlimit },
750 { "Manager", "DefaultCPUAccounting", config_parse_tristate, 0, &arg_default_cpu_accounting },
751 { "Manager", "DefaultIOAccounting", config_parse_bool, 0, &arg_default_io_accounting },
752 { "Manager", "DefaultIPAccounting", config_parse_bool, 0, &arg_default_ip_accounting },
753 { "Manager", "DefaultBlockIOAccounting", config_parse_bool, 0, &arg_default_blockio_accounting },
754 { "Manager", "DefaultMemoryAccounting", config_parse_bool, 0, &arg_default_memory_accounting },
755 { "Manager", "DefaultTasksAccounting", config_parse_bool, 0, &arg_default_tasks_accounting },
756 { "Manager", "DefaultTasksMax", config_parse_tasks_max, 0, &arg_default_tasks_max },
757 { "Manager", "CtrlAltDelBurstAction", config_parse_emergency_action, 0, &arg_cad_burst_action },
758 { "Manager", "DefaultOOMPolicy", config_parse_oom_policy, 0, &arg_default_oom_policy },
d4a402e4 759 { "Manager", "DefaultOOMScoreAdjust", config_parse_oom_score_adjust, 0, NULL },
d3b1c508 760 {}
487393e9
LP		 761 };
762
e94a009c
YW		 763 _cleanup_strv_free_ char **files = NULL, **dirs = NULL;
764 const char *suffix;
f70e6fb4 765 int r;
75eb6154 766
e94a009c 767 if (arg_system)
f70e6fb4 768 suffix = "system.conf.d";
e94a009c
YW		 769 else {
770 r = manager_find_user_config_paths(&files, &dirs);
f70e6fb4
ZJS		 771 if (r < 0)
772 return log_error_errno(r, "Failed to determine config file paths: %m");
e94a009c 773
f70e6fb4
ZJS		 774 suffix = "user.conf.d";
775 }
75eb6154 776
f70e6fb4 777 (void) config_parse_many(
e94a009c
YW		 778 (const char* const*) (files ?: STRV_MAKE(PKGSYSCONFDIR "/system.conf")),
779 (const char* const*) (dirs ?: CONF_PATHS_STRV("systemd")),
780 suffix,
4f9ff96a
LP		 781 "Manager\0",
782 config_item_table_lookup, items,
783 CONFIG_PARSE_WARN,
784 NULL,
785 NULL);
36c16a7c 786
f70e6fb4
ZJS		 787 /* Traditionally "0" was used to turn off the default unit timeouts. Fix this up so that we use
788 * USEC_INFINITY like everywhere else. */
36c16a7c
LP		 789 if (arg_default_timeout_start_usec <= 0)
790 arg_default_timeout_start_usec = USEC_INFINITY;
791 if (arg_default_timeout_stop_usec <= 0)
792 arg_default_timeout_stop_usec = USEC_INFINITY;
487393e9 793
487393e9
LP		 794 return 0;
795}
796
85cb4151 797static void set_manager_defaults(Manager *m) {
06af2a04
TB		 798
799 assert(m);
800
5b65ae15
LP		 801 /* Propagates the various default unit property settings into the manager object, i.e. properties that do not
802 * affect the manager itself, but are just what newly allocated units will have set if they haven't set
803 * anything else. (Also see set_manager_settings() for the settings that affect the manager's own behaviour) */
804
06af2a04
TB		 805 m->default_timer_accuracy_usec = arg_default_timer_accuracy_usec;
806 m->default_std_output = arg_default_std_output;
807 m->default_std_error = arg_default_std_error;
808 m->default_timeout_start_usec = arg_default_timeout_start_usec;
809 m->default_timeout_stop_usec = arg_default_timeout_stop_usec;
dc653bf4
JK		 810 m->default_timeout_abort_usec = arg_default_timeout_abort_usec;
811 m->default_timeout_abort_set = arg_default_timeout_abort_set;
06af2a04
TB		 812 m->default_restart_usec = arg_default_restart_usec;
813 m->default_start_limit_interval = arg_default_start_limit_interval;
814 m->default_start_limit_burst = arg_default_start_limit_burst;
a88c5b8a
CD		 815
816 /* On 4.15+ with unified hierarchy, CPU accounting is essentially free as it doesn't require the CPU
817 * controller to be enabled, so the default is to enable it unless we got told otherwise. */
818 if (arg_default_cpu_accounting >= 0)
819 m->default_cpu_accounting = arg_default_cpu_accounting;
820 else
821 m->default_cpu_accounting = cpu_accounting_is_cheap();
822
13c31542 823 m->default_io_accounting = arg_default_io_accounting;
377bfd2d 824 m->default_ip_accounting = arg_default_ip_accounting;
06af2a04
TB		 825 m->default_blockio_accounting = arg_default_blockio_accounting;
826 m->default_memory_accounting = arg_default_memory_accounting;
03a7b521 827 m->default_tasks_accounting = arg_default_tasks_accounting;
0af20ea2 828 m->default_tasks_max = arg_default_tasks_max;
afcfaa69 829 m->default_oom_policy = arg_default_oom_policy;
d4a402e4
LP		 830 m->default_oom_score_adjust_set = arg_default_oom_score_adjust_set;
831 m->default_oom_score_adjust = arg_default_oom_score_adjust;
06af2a04 832
79a224c4
LP		 833 (void) manager_set_default_rlimits(m, arg_default_rlimit);
834
835 (void) manager_default_environment(m);
836 (void) manager_transient_environment_add(m, arg_default_environment);
06af2a04
TB		 837}
838
7b46fc6a
LP		 839static void set_manager_settings(Manager *m) {
840
841 assert(m);
842
986935cf
FB		 843 /* Propagates the various manager settings into the manager object, i.e. properties that
844 * effect the manager itself (as opposed to just being inherited into newly allocated
845 * units, see set_manager_defaults() above). */
5b65ae15 846
7b46fc6a 847 m->confirm_spawn = arg_confirm_spawn;
2a12e32e 848 m->service_watchdogs = arg_service_watchdogs;
7b46fc6a
LP		 849 m->cad_burst_action = arg_cad_burst_action;
850
986935cf
FB		 851 manager_set_watchdog(m, WATCHDOG_RUNTIME, arg_runtime_watchdog);
852 manager_set_watchdog(m, WATCHDOG_REBOOT, arg_reboot_watchdog);
853 manager_set_watchdog(m, WATCHDOG_KEXEC, arg_kexec_watchdog);
854
7365a296 855 manager_set_show_status(m, arg_show_status, "commandline");
36cf4507 856 m->status_unit_format = arg_status_unit_format;
7b46fc6a
LP		 857}
858
f170852a 859static int parse_argv(int argc, char *argv[]) {
f170852a
LP		 860 enum {
861 ARG_LOG_LEVEL = 0x100,
862 ARG_LOG_TARGET,
bbe63281
LP		 863 ARG_LOG_COLOR,
864 ARG_LOG_LOCATION,
c5673ed0 865 ARG_LOG_TIME,
2f198e2f 866 ARG_UNIT,
edb9aaa8 867 ARG_SYSTEM,
af2d49f7 868 ARG_USER,
e537352b 869 ARG_TEST,
b87c2aa6 870 ARG_NO_PAGER,
9ba0bc4e 871 ARG_VERSION,
80876c20 872 ARG_DUMP_CONFIGURATION_ITEMS,
bbc1acab 873 ARG_DUMP_BUS_PROPERTIES,
5c08257b 874 ARG_BUS_INTROSPECT,
9e58ff9c 875 ARG_DUMP_CORE,
b9e74c39 876 ARG_CRASH_CHVT,
9e58ff9c 877 ARG_CRASH_SHELL,
b9e74c39 878 ARG_CRASH_REBOOT,
a16e1123 879 ARG_CONFIRM_SPAWN,
9e58ff9c 880 ARG_SHOW_STATUS,
4288f619 881 ARG_DESERIALIZE,
2660882b 882 ARG_SWITCHED_ROOT,
0a494f1f 883 ARG_DEFAULT_STD_OUTPUT,
ee48dbd5 884 ARG_DEFAULT_STD_ERROR,
2a12e32e
JK		 885 ARG_MACHINE_ID,
886 ARG_SERVICE_WATCHDOGS,
f170852a
LP		 887 };
888
889 static const struct option options[] = {
a16e1123
LP		 890 { "log-level", required_argument, NULL, ARG_LOG_LEVEL },
891 { "log-target", required_argument, NULL, ARG_LOG_TARGET },
bbe63281
LP		 892 { "log-color", optional_argument, NULL, ARG_LOG_COLOR },
893 { "log-location", optional_argument, NULL, ARG_LOG_LOCATION },
c5673ed0 894 { "log-time", optional_argument, NULL, ARG_LOG_TIME },
2f198e2f 895 { "unit", required_argument, NULL, ARG_UNIT },
edb9aaa8 896 { "system", no_argument, NULL, ARG_SYSTEM },
af2d49f7 897 { "user", no_argument, NULL, ARG_USER },
a16e1123 898 { "test", no_argument, NULL, ARG_TEST },
b87c2aa6 899 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
a16e1123 900 { "help", no_argument, NULL, 'h' },
9ba0bc4e 901 { "version", no_argument, NULL, ARG_VERSION },
a16e1123 902 { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
bbc1acab 903 { "dump-bus-properties", no_argument, NULL, ARG_DUMP_BUS_PROPERTIES },
5c08257b 904 { "bus-introspect", required_argument, NULL, ARG_BUS_INTROSPECT },
a5d87bf0 905 { "dump-core", optional_argument, NULL, ARG_DUMP_CORE },
b9e74c39 906 { "crash-chvt", required_argument, NULL, ARG_CRASH_CHVT },
a5d87bf0 907 { "crash-shell", optional_argument, NULL, ARG_CRASH_SHELL },
b9e74c39 908 { "crash-reboot", optional_argument, NULL, ARG_CRASH_REBOOT },
a5d87bf0 909 { "confirm-spawn", optional_argument, NULL, ARG_CONFIRM_SPAWN },
6e98720f 910 { "show-status", optional_argument, NULL, ARG_SHOW_STATUS },
a16e1123 911 { "deserialize", required_argument, NULL, ARG_DESERIALIZE },
2660882b 912 { "switched-root", no_argument, NULL, ARG_SWITCHED_ROOT },
0a494f1f
LP		 913 { "default-standard-output", required_argument, NULL, ARG_DEFAULT_STD_OUTPUT, },
914 { "default-standard-error", required_argument, NULL, ARG_DEFAULT_STD_ERROR, },
ee48dbd5 915 { "machine-id", required_argument, NULL, ARG_MACHINE_ID },
2a12e32e 916 { "service-watchdogs", required_argument, NULL, ARG_SERVICE_WATCHDOGS },
fb472900 917 {}
f170852a
LP		 918 };
919
920 int c, r;
9a9ca408 921 bool user_arg_seen = false;
f170852a
LP		 922
923 assert(argc >= 1);
924 assert(argv);
925
df0ff127 926 if (getpid_cached() == 1)
b770165a
LP		 927 opterr = 0;
928
099663ff 929 while ((c = getopt_long(argc, argv, "hDbsz:", options, NULL)) >= 0)
f170852a
LP		 930
931 switch (c) {
932
933 case ARG_LOG_LEVEL:
fb472900 934 r = log_set_max_level_from_string(optarg);
2b5107e1
ZJS		 935 if (r < 0)
936 return log_error_errno(r, "Failed to parse log level \"%s\": %m", optarg);
f170852a
LP		 937
938 break;
939
940 case ARG_LOG_TARGET:
fb472900 941 r = log_set_target_from_string(optarg);
2b5107e1
ZJS		 942 if (r < 0)
943 return log_error_errno(r, "Failed to parse log target \"%s\": %m", optarg);
f170852a
LP		 944
945 break;
946
bbe63281
LP		 947 case ARG_LOG_COLOR:
948
d0b170c8 949 if (optarg) {
fb472900 950 r = log_show_color_from_string(optarg);
2b5107e1
ZJS		 951 if (r < 0)
952 return log_error_errno(r, "Failed to parse log color setting \"%s\": %m",
953 optarg);
d0b170c8
LP		 954 } else
955 log_show_color(true);
bbe63281
LP		 956
957 break;
958
959 case ARG_LOG_LOCATION:
d0b170c8 960 if (optarg) {
fb472900 961 r = log_show_location_from_string(optarg);
2b5107e1
ZJS		 962 if (r < 0)
963 return log_error_errno(r, "Failed to parse log location setting \"%s\": %m",
964 optarg);
d0b170c8
LP		 965 } else
966 log_show_location(true);
bbe63281
LP		 967
968 break;
969
c5673ed0
DS		 970 case ARG_LOG_TIME:
971
972 if (optarg) {
973 r = log_show_time_from_string(optarg);
974 if (r < 0)
975 return log_error_errno(r, "Failed to parse log time setting \"%s\": %m",
976 optarg);
977 } else
978 log_show_time(true);
979
980 break;
981
0a494f1f 982 case ARG_DEFAULT_STD_OUTPUT:
fb472900 983 r = exec_output_from_string(optarg);
2b5107e1
ZJS		 984 if (r < 0)
985 return log_error_errno(r, "Failed to parse default standard output setting \"%s\": %m",
986 optarg);
987 arg_default_std_output = r;
0a494f1f
LP		 988 break;
989
990 case ARG_DEFAULT_STD_ERROR:
fb472900 991 r = exec_output_from_string(optarg);
2b5107e1
ZJS		 992 if (r < 0)
993 return log_error_errno(r, "Failed to parse default standard error output setting \"%s\": %m",
994 optarg);
995 arg_default_std_error = r;
0a494f1f
LP		 996 break;
997
2f198e2f 998 case ARG_UNIT:
e6e242ad 999 r = free_and_strdup(&arg_default_unit, optarg);
23bbb0de 1000 if (r < 0)
2b5107e1 1001 return log_error_errno(r, "Failed to set default unit \"%s\": %m", optarg);
f170852a
LP		 1002
1003 break;
1004
edb9aaa8 1005 case ARG_SYSTEM:
463d0d15 1006 arg_system = true;
edb9aaa8 1007 break;
a5dab5ce 1008
af2d49f7 1009 case ARG_USER:
463d0d15 1010 arg_system = false;
9a9ca408 1011 user_arg_seen = true;
a5dab5ce 1012 break;
a5dab5ce 1013
e965d56d 1014 case ARG_TEST:
fa0f4d8a 1015 arg_action = ACTION_TEST;
b87c2aa6
ZJS		 1016 break;
1017
1018 case ARG_NO_PAGER:
0221d68a 1019 arg_pager_flags |= PAGER_DISABLE;
e965d56d
LP		 1020 break;
1021
9ba0bc4e
ZJS		 1022 case ARG_VERSION:
1023 arg_action = ACTION_VERSION;
1024 break;
1025
e537352b 1026 case ARG_DUMP_CONFIGURATION_ITEMS:
fa0f4d8a 1027 arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
e537352b
LP		 1028 break;
1029
bbc1acab
YW		 1030 case ARG_DUMP_BUS_PROPERTIES:
1031 arg_action = ACTION_DUMP_BUS_PROPERTIES;
1032 break;
1033
5c08257b
ZJS		 1034 case ARG_BUS_INTROSPECT:
1035 arg_bus_introspect = optarg;
1036 arg_action = ACTION_BUS_INTROSPECT;
1037 break;
1038
9e58ff9c 1039 case ARG_DUMP_CORE:
599c7c54
ZJS		 1040 r = parse_boolean_argument("--dump-core", optarg, &arg_dump_core);
1041 if (r < 0)
1042 return r;
b9e74c39
LP		 1043 break;
1044
1045 case ARG_CRASH_CHVT:
a07a7324 1046 r = parse_crash_chvt(optarg, &arg_crash_chvt);
b9e74c39 1047 if (r < 0)
2b5107e1
ZJS		 1048 return log_error_errno(r, "Failed to parse crash virtual terminal index: \"%s\": %m",
1049 optarg);
9e58ff9c
LP		 1050 break;
1051
1052 case ARG_CRASH_SHELL:
599c7c54
ZJS		 1053 r = parse_boolean_argument("--crash-shell", optarg, &arg_crash_shell);
1054 if (r < 0)
1055 return r;
b9e74c39
LP		 1056 break;
1057
1058 case ARG_CRASH_REBOOT:
599c7c54
ZJS		 1059 r = parse_boolean_argument("--crash-reboot", optarg, &arg_crash_reboot);
1060 if (r < 0)
1061 return r;
9e58ff9c
LP		 1062 break;
1063
80876c20 1064 case ARG_CONFIRM_SPAWN:
7d5ceb64
FB		 1065 arg_confirm_spawn = mfree(arg_confirm_spawn);
1066
1067 r = parse_confirm_spawn(optarg, &arg_confirm_spawn);
1068 if (r < 0)
2b5107e1
ZJS		 1069 return log_error_errno(r, "Failed to parse confirm spawn option: \"%s\": %m",
1070 optarg);
80876c20
LP		 1071 break;
1072
2a12e32e 1073 case ARG_SERVICE_WATCHDOGS:
599c7c54 1074 r = parse_boolean_argument("--service-watchdogs=", optarg, &arg_service_watchdogs);
2a12e32e 1075 if (r < 0)
599c7c54 1076 return r;
2a12e32e
JK		 1077 break;
1078
9e58ff9c 1079 case ARG_SHOW_STATUS:
d450b6f2
ZJS		 1080 if (optarg) {
1081 r = parse_show_status(optarg, &arg_show_status);
ac7ec288 1082 if (r < 0)
2b5107e1
ZJS		 1083 return log_error_errno(r, "Failed to parse show status boolean: \"%s\": %m",
1084 optarg);
d450b6f2
ZJS		 1085 } else
1086 arg_show_status = SHOW_STATUS_YES;
6e98720f 1087 break;
a5d87bf0 1088
a16e1123
LP		 1089 case ARG_DESERIALIZE: {
1090 int fd;
1091 FILE *f;
1092
01e10de3 1093 r = safe_atoi(optarg, &fd);
2b5107e1
ZJS		 1094 if (r < 0)
1095 log_error_errno(r, "Failed to parse deserialize option \"%s\": %m", optarg);
baaa35ad
ZJS		 1096 if (fd < 0)
1097 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
1098 "Invalid deserialize fd: %d",
1099 fd);
a16e1123 1100
b9e74c39 1101 (void) fd_cloexec(fd, true);
01e10de3
LP		 1102
1103 f = fdopen(fd, "r");
4a62c710 1104 if (!f)
2b5107e1 1105 return log_error_errno(errno, "Failed to open serialization fd %d: %m", fd);
a16e1123 1106
74ca738f 1107 safe_fclose(arg_serialization);
d3b1c508 1108 arg_serialization = f;
a16e1123
LP		 1109
1110 break;
1111 }
1112
2660882b 1113 case ARG_SWITCHED_ROOT:
bf4df7c3 1114 arg_switched_root = true;
d03bc1b8
HH		 1115 break;
1116
ee48dbd5
NC		 1117 case ARG_MACHINE_ID:
1118 r = set_machine_id(optarg);
54500613 1119 if (r < 0)
2b5107e1 1120 return log_error_errno(r, "MachineID '%s' is not valid: %m", optarg);
ee48dbd5
NC		 1121 break;
1122
f170852a 1123 case 'h':
fa0f4d8a 1124 arg_action = ACTION_HELP;
f170852a
LP		 1125 break;
1126
1d2e23ab
LP		 1127 case 'D':
1128 log_set_max_level(LOG_DEBUG);
1129 break;
1130
099663ff
LP		 1131 case 'b':
1132 case 's':
1133 case 'z':
cd57038a
ZJS		 1134 /* Just to eat away the sysvinit kernel cmdline args that we'll parse in
1135 * parse_proc_cmdline_item() or ignore, without any getopt() error messages.
1136 */
099663ff 1137 case '?':
df0ff127 1138 if (getpid_cached() != 1)
099663ff 1139 return -EINVAL;
601185b4
ZJS		 1140 else
1141 return 0;
099663ff 1142
601185b4 1143 default:
04499a70 1144 assert_not_reached();
f170852a
LP		 1145 }
1146
d7a0f1f4 1147 if (optind < argc && getpid_cached() != 1)
9a9ca408
ZJS		 1148 /* Hmm, when we aren't run as init system let's complain about excess arguments */
1149 return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Excess arguments.");
1150
1151 if (arg_action == ACTION_RUN && !arg_system && !user_arg_seen)
baaa35ad 1152 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
9a9ca408 1153 "Explicit --user argument required to run as user manager.");
d821e6d6 1154
f170852a
LP		 1155 return 0;
1156}
1157
1158static int help(void) {
37ec0fdd
LP		 1159 _cleanup_free_ char *link = NULL;
1160 int r;
1161
1162 r = terminal_urlify_man("systemd", "1", &link);
1163 if (r < 0)
1164 return log_oom();
f170852a 1165
2e33c433 1166 printf("%s [OPTIONS...]\n\n"
7ae47326
ZJS		 1167 "%sStarts and monitors system and user services.%s\n\n"
1168 "This program takes no positional arguments.\n\n"
1169 "%sOptions%s:\n"
e537352b 1170 " -h --help Show this help\n"
cb4069d9 1171 " --version Show version\n"
cd69e88b
LP		 1172 " --test Determine initial transaction, dump it and exit\n"
1173 " --system In combination with --test: operate as system service manager\n"
1174 " --user In combination with --test: operate as per-user service manager\n"
b87c2aa6 1175 " --no-pager Do not pipe output into a pager\n"
80876c20 1176 " --dump-configuration-items Dump understood unit configuration items\n"
bbc1acab 1177 " --dump-bus-properties Dump exposed bus properties\n"
5c08257b 1178 " --bus-introspect=PATH Write XML introspection data\n"
9e58ff9c 1179 " --unit=UNIT Set default unit\n"
b9e74c39
LP		 1180 " --dump-core[=BOOL] Dump core on crash\n"
1181 " --crash-vt=NR Change to specified VT on crash\n"
1182 " --crash-reboot[=BOOL] Reboot on crash\n"
1183 " --crash-shell[=BOOL] Run shell on crash\n"
1184 " --confirm-spawn[=BOOL] Ask for confirmation when spawning processes\n"
1185 " --show-status[=BOOL] Show status updates on the console during bootup\n"
c1dc6153 1186 " --log-target=TARGET Set log target (console, journal, kmsg, journal-or-kmsg, null)\n"
9e58ff9c 1187 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
b9e74c39
LP		 1188 " --log-color[=BOOL] Highlight important log messages\n"
1189 " --log-location[=BOOL] Include code location in log messages\n"
c5673ed0 1190 " --log-time[=BOOL] Prefix log messages with current time\n"
0a494f1f 1191 " --default-standard-output= Set default standard output for services\n"
37ec0fdd 1192 " --default-standard-error= Set default standard error output for services\n"
bc556335
DDM		 1193 "\nSee the %s for details.\n",
1194 program_invocation_short_name,
1195 ansi_highlight(),
1196 ansi_normal(),
1197 ansi_underline(),
1198 ansi_normal(),
1199 link);
f170852a
LP		 1200
1201 return 0;
1202}
1203
2cc856ac
LP		 1204static int prepare_reexecute(
1205 Manager *m,
1206 FILE **ret_f,
1207 FDSet **ret_fds,
1208 bool switching_root) {
1209
48b90859
LP		 1210 _cleanup_fdset_free_ FDSet *fds = NULL;
1211 _cleanup_fclose_ FILE *f = NULL;
a16e1123
LP		 1212 int r;
1213
1214 assert(m);
2cc856ac
LP		 1215 assert(ret_f);
1216 assert(ret_fds);
a16e1123 1217
6b78f9b4 1218 r = manager_open_serialization(m, &f);
48b90859
LP		 1219 if (r < 0)
1220 return log_error_errno(r, "Failed to create serialization file: %m");
a16e1123 1221
71445ae7 1222 /* Make sure nothing is really destructed when we shut down */
313cefa1 1223 m->n_reloading++;
718db961 1224 bus_manager_send_reloading(m, true);
71445ae7 1225
6b78f9b4 1226 fds = fdset_new();
48b90859
LP		 1227 if (!fds)
1228 return log_oom();
a16e1123 1229
b3680f49 1230 r = manager_serialize(m, f, fds, switching_root);
48b90859 1231 if (r < 0)
d68c645b 1232 return r;
a16e1123 1233
48b90859
LP		 1234 if (fseeko(f, 0, SEEK_SET) == (off_t) -1)
1235 return log_error_errno(errno, "Failed to rewind serialization fd: %m");
a16e1123 1236
6b78f9b4 1237 r = fd_cloexec(fileno(f), false);
48b90859
LP		 1238 if (r < 0)
1239 return log_error_errno(r, "Failed to disable O_CLOEXEC for serialization: %m");
a16e1123 1240
6b78f9b4 1241 r = fdset_cloexec(fds, false);
48b90859
LP		 1242 if (r < 0)
1243 return log_error_errno(r, "Failed to disable O_CLOEXEC for serialization fds: %m");
a16e1123 1244
2cc856ac
LP		 1245 *ret_f = TAKE_PTR(f);
1246 *ret_fds = TAKE_PTR(fds);
a16e1123 1247
48b90859 1248 return 0;
a16e1123
LP		 1249}
1250
a8b627aa
LP		 1251static void bump_file_max_and_nr_open(void) {
1252
ff3a7019
ZJS		 1253 /* Let's bump fs.file-max and fs.nr_open to their respective maximums. On current kernels large
1254 * numbers of file descriptors are no longer a performance problem and their memory is properly
1255 * tracked by memcg, thus counting them and limiting them in another two layers of limits is
1256 * unnecessary and just complicates things. This function hence turns off 2 of the 4 levels of limits
1257 * on file descriptors, and makes RLIMIT_NOLIMIT (soft + hard) the only ones that really matter. */
a8b627aa
LP		 1258
1259#if BUMP_PROC_SYS_FS_FILE_MAX || BUMP_PROC_SYS_FS_NR_OPEN
a8b627aa
LP		 1260 int r;
1261#endif
1262
1263#if BUMP_PROC_SYS_FS_FILE_MAX
409607c1
ZJS		 1264 /* The maximum the kernel allows for this since 5.2 is LONG_MAX, use that. (Previously things were
1265 * different, but the operation would fail silently.) */
56e8419a 1266 r = sysctl_writef("fs/file-max", "%li\n", LONG_MAX);
a8b627aa
LP		 1267 if (r < 0)
1268 log_full_errno(IN_SET(r, -EROFS, -EPERM, -EACCES) ? LOG_DEBUG : LOG_WARNING, r, "Failed to bump fs.file-max, ignoring: %m");
1269#endif
1270
a8b627aa
LP		 1271#if BUMP_PROC_SYS_FS_NR_OPEN
1272 int v = INT_MAX;
1273
ff3a7019
ZJS		 1274 /* Argh! The kernel enforces maximum and minimum values on the fs.nr_open, but we don't really know
1275 * what they are. The expression by which the maximum is determined is dependent on the architecture,
1276 * and is something we don't really want to copy to userspace, as it is dependent on implementation
1277 * details of the kernel. Since the kernel doesn't expose the maximum value to us, we can only try
1278 * and hope. Hence, let's start with INT_MAX, and then keep halving the value until we find one that
1279 * works. Ugly? Yes, absolutely, but kernel APIs are kernel APIs, so what do can we do... 🤯 */
a8b627aa
LP		 1280
1281 for (;;) {
1282 int k;
1283
1284 v &= ~(__SIZEOF_POINTER__ - 1); /* Round down to next multiple of the pointer size */
1285 if (v < 1024) {
1286 log_warning("Can't bump fs.nr_open, value too small.");
1287 break;
1288 }
1289
1290 k = read_nr_open();
1291 if (k < 0) {
1292 log_error_errno(k, "Failed to read fs.nr_open: %m");
1293 break;
1294 }
1295 if (k >= v) { /* Already larger */
1296 log_debug("Skipping bump, value is already larger.");
1297 break;
1298 }
1299
56e8419a 1300 r = sysctl_writef("fs/nr_open", "%i\n", v);
a8b627aa
LP		 1301 if (r == -EINVAL) {
1302 log_debug("Couldn't write fs.nr_open as %i, halving it.", v);
1303 v /= 2;
1304 continue;
1305 }
1306 if (r < 0) {
1307 log_full_errno(IN_SET(r, -EROFS, -EPERM, -EACCES) ? LOG_DEBUG : LOG_WARNING, r, "Failed to bump fs.nr_open, ignoring: %m");
1308 break;
1309 }
1310
1311 log_debug("Successfully bumped fs.nr_open to %i", v);
1312 break;
1313 }
1314#endif
1315}
1316
4096d6f5 1317static int bump_rlimit_nofile(struct rlimit *saved_rlimit) {
cda7faa9 1318 struct rlimit new_rlimit;
9264cc39 1319 int r, nr;
4096d6f5 1320
52d62075
LP		 1321 /* Get the underlying absolute limit the kernel enforces */
1322 nr = read_nr_open();
1323
cda7faa9
LP		 1324 /* Calculate the new limits to use for us. Never lower from what we inherited. */
1325 new_rlimit = (struct rlimit) {
1326 .rlim_cur = MAX((rlim_t) nr, saved_rlimit->rlim_cur),
1327 .rlim_max = MAX((rlim_t) nr, saved_rlimit->rlim_max),
1328 };
1329
1330 /* Shortcut if nothing changes. */
1331 if (saved_rlimit->rlim_max >= new_rlimit.rlim_max &&
1332 saved_rlimit->rlim_cur >= new_rlimit.rlim_cur) {
1333 log_debug("RLIMIT_NOFILE is already as high or higher than we need it, not bumping.");
1334 return 0;
1335 }
1336
52d62075
LP		 1337 /* Bump up the resource limit for ourselves substantially, all the way to the maximum the kernel allows, for
1338 * both hard and soft. */
cda7faa9 1339 r = setrlimit_closest(RLIMIT_NOFILE, &new_rlimit);
23bbb0de 1340 if (r < 0)
3ce40911 1341 return log_warning_errno(r, "Setting RLIMIT_NOFILE failed, ignoring: %m");
4096d6f5
LP		 1342
1343 return 0;
1344}
1345
fb3ae275 1346static int bump_rlimit_memlock(struct rlimit *saved_rlimit) {
cda7faa9 1347 struct rlimit new_rlimit;
04d1ee0f 1348 uint64_t mm;
fb3ae275
LP		 1349 int r;
1350
ff3a7019
ZJS		 1351 /* BPF_MAP_TYPE_LPM_TRIE bpf maps are charged against RLIMIT_MEMLOCK, even if we have CAP_IPC_LOCK
1352 * which should normally disable such checks. We need them to implement IPAddressAllow= and
1353 * IPAddressDeny=, hence let's bump the value high enough for our user. */
fb3ae275 1354
cda7faa9
LP		 1355 /* Using MAX() on resource limits only is safe if RLIM_INFINITY is > 0. POSIX declares that rlim_t
1356 * must be unsigned, hence this is a given, but let's make this clear here. */
1357 assert_cc(RLIM_INFINITY > 0);
1358
ff3a7019
ZJS		 1359 mm = physical_memory_scale(1, 8); /* Let's scale how much we allow to be locked by the amount of
1360 * physical RAM. We allow an eighth to be locked by us, just to
1361 * pick a value. */
04d1ee0f 1362
cda7faa9 1363 new_rlimit = (struct rlimit) {
04d1ee0f
LP		 1364 .rlim_cur = MAX3(HIGH_RLIMIT_MEMLOCK, saved_rlimit->rlim_cur, mm),
1365 .rlim_max = MAX3(HIGH_RLIMIT_MEMLOCK, saved_rlimit->rlim_max, mm),
cda7faa9
LP		 1366 };
1367
1368 if (saved_rlimit->rlim_max >= new_rlimit.rlim_cur &&
1369 saved_rlimit->rlim_cur >= new_rlimit.rlim_max) {
1370 log_debug("RLIMIT_MEMLOCK is already as high or higher than we need it, not bumping.");
1371 return 0;
1372 }
1373
1374 r = setrlimit_closest(RLIMIT_MEMLOCK, &new_rlimit);
fb3ae275
LP		 1375 if (r < 0)
1376 return log_warning_errno(r, "Setting RLIMIT_MEMLOCK failed, ignoring: %m");
1377
1378 return 0;
1379}
1380
80758717 1381static void test_usr(void) {
80758717 1382
796ac4c1 1383 /* Check that /usr is either on the same file system as / or mounted already. */
80758717 1384
871c44a7
LP		 1385 if (dir_is_empty("/usr") <= 0)
1386 return;
1387
8b173b5e 1388 log_warning("/usr appears to be on its own filesystem and is not already mounted. This is not a supported setup. "
871c44a7
LP		 1389 "Some things will probably break (sometimes even silently) in mysterious ways. "
1390 "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
1391}
1392
d3b1c508 1393static int enforce_syscall_archs(Set *archs) {
349cc4a5 1394#if HAVE_SECCOMP
d3b1c508
LP		 1395 int r;
1396
83f12b27
FS		 1397 if (!is_seccomp_available())
1398 return 0;
1399
469830d1 1400 r = seccomp_restrict_archs(arg_syscall_archs);
d3b1c508 1401 if (r < 0)
469830d1 1402 return log_error_errno(r, "Failed to enforce system call architecture restrication: %m");
d3b1c508 1403#endif
469830d1 1404 return 0;
d3b1c508
LP		 1405}
1406
b6e2f329
LP		 1407static int status_welcome(void) {
1408 _cleanup_free_ char *pretty_name = NULL, *ansi_color = NULL;
1409 int r;
1410
5ca02bfc 1411 if (!show_status_on(arg_show_status))
fd8c85c6
LP		 1412 return 0;
1413
d58ad743
LP		 1414 r = parse_os_release(NULL,
1415 "PRETTY_NAME", &pretty_name,
209c1470 1416 "ANSI_COLOR", &ansi_color);
d58ad743
LP		 1417 if (r < 0)
1418 log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r,
1419 "Failed to read os-release file, ignoring: %m");
b6e2f329 1420
dc9b5816 1421 if (log_get_show_color())
a885727a 1422 return status_printf(NULL, 0,
dc9b5816
ZJS		 1423 "\nWelcome to \x1B[%sm%s\x1B[0m!\n",
1424 isempty(ansi_color) ? "1" : ansi_color,
1425 isempty(pretty_name) ? "Linux" : pretty_name);
1426 else
a885727a 1427 return status_printf(NULL, 0,
dc9b5816
ZJS		 1428 "\nWelcome to %s!\n",
1429 isempty(pretty_name) ? "Linux" : pretty_name);
b6e2f329
LP		 1430}
1431
fdd25311
LP		 1432static int write_container_id(void) {
1433 const char *c;
7756528e 1434 int r = 0; /* avoid false maybe-uninitialized warning */
fdd25311
LP		 1435
1436 c = getenv("container");
1437 if (isempty(c))
1438 return 0;
1439
8612da97
LP		 1440 RUN_WITH_UMASK(0022)
1441 r = write_string_file("/run/systemd/container", c, WRITE_STRING_FILE_CREATE);
19854865 1442 if (r < 0)
f1f849b0 1443 return log_warning_errno(r, "Failed to write /run/systemd/container, ignoring: %m");
19854865
LP		 1444
1445 return 1;
1446}
1447
1448static int bump_unix_max_dgram_qlen(void) {
1449 _cleanup_free_ char *qlen = NULL;
1450 unsigned long v;
1451 int r;
1452
ff3a7019
ZJS		 1453 /* Let's bump the net.unix.max_dgram_qlen sysctl. The kernel default of 16 is simply too low. We set
1454 * the value really really early during boot, so that it is actually applied to all our sockets,
1455 * including the $NOTIFY_SOCKET one. */
19854865
LP		 1456
1457 r = read_one_line_file("/proc/sys/net/unix/max_dgram_qlen", &qlen);
1458 if (r < 0)
ff3a7019
ZJS		 1459 return log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r,
1460 "Failed to read AF_UNIX datagram queue length, ignoring: %m");
19854865
LP		 1461
1462 r = safe_atolu(qlen, &v);
1463 if (r < 0)
3130fca5 1464 return log_warning_errno(r, "Failed to parse AF_UNIX datagram queue length '%s', ignoring: %m", qlen);
19854865
LP		 1465
1466 if (v >= DEFAULT_UNIX_MAX_DGRAM_QLEN)
1467 return 0;
1468
ff3a7019
ZJS		 1469 r = write_string_filef("/proc/sys/net/unix/max_dgram_qlen", WRITE_STRING_FILE_DISABLE_BUFFER,
1470 "%lu", DEFAULT_UNIX_MAX_DGRAM_QLEN);
19854865
LP		 1471 if (r < 0)
1472 return log_full_errno(IN_SET(r, -EROFS, -EPERM, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
1473 "Failed to bump AF_UNIX datagram queue length, ignoring: %m");
1474
1475 return 1;
fdd25311
LP		 1476}
1477
32391275
FB		 1478static int fixup_environment(void) {
1479 _cleanup_free_ char *term = NULL;
4dc63c4b 1480 const char *t;
32391275
FB		 1481 int r;
1482
43db615b
LP		 1483 /* Only fix up the environment when we are started as PID 1 */
1484 if (getpid_cached() != 1)
1485 return 0;
1486
1487 /* We expect the environment to be set correctly if run inside a container. */
84af7821
LP		 1488 if (detect_container() > 0)
1489 return 0;
1490
ff3a7019
ZJS		 1491 /* When started as PID1, the kernel uses /dev/console for our stdios and uses TERM=linux whatever the
1492 * backend device used by the console. We try to make a better guess here since some consoles might
1493 * not have support for color mode for example.
32391275 1494 *
43db615b 1495 * However if TERM was configured through the kernel command line then leave it alone. */
1d84ad94 1496 r = proc_cmdline_get_key("TERM", 0, &term);
32391275
FB		 1497 if (r < 0)
1498 return r;
32391275 1499
4dc63c4b
LP		 1500 t = term ?: default_term_for_tty("/dev/console");
1501
1502 if (setenv("TERM", t, 1) < 0)
32391275
FB		 1503 return -errno;
1504
9d48671c 1505 /* The kernels sets HOME=/ for init. Let's undo this. */
44ee03d1
ZJS		 1506 if (path_equal_ptr(getenv("HOME"), "/"))
1507 assert_se(unsetenv("HOME") == 0);
9d48671c 1508
32391275
FB		 1509 return 0;
1510}
1511
6808a0bc
LP		 1512static void redirect_telinit(int argc, char *argv[]) {
1513
1514 /* This is compatibility support for SysV, where calling init as a user is identical to telinit. */
1515
1516#if HAVE_SYSV_COMPAT
1517 if (getpid_cached() == 1)
1518 return;
1519
2306d177 1520 if (!invoked_as(argv, "init"))
6808a0bc
LP		 1521 return;
1522
1523 execv(SYSTEMCTL_BINARY_PATH, argv);
1524 log_error_errno(errno, "Failed to exec " SYSTEMCTL_BINARY_PATH ": %m");
a45d7127 1525 exit(EXIT_FAILURE);
6808a0bc
LP		 1526#endif
1527}
1528
4a36297c
LP		 1529static int become_shutdown(
1530 const char *shutdown_verb,
7eb35049 1531 int retval) {
4a36297c
LP		 1532
1533 char log_level[DECIMAL_STR_MAX(int) + 1],
e73c54b8
JK		 1534 exit_code[DECIMAL_STR_MAX(uint8_t) + 1],
1535 timeout[DECIMAL_STR_MAX(usec_t) + 1];
4a36297c 1536
e73c54b8 1537 const char* command_line[13] = {
4a36297c
LP		 1538 SYSTEMD_SHUTDOWN_BINARY_PATH,
1539 shutdown_verb,
e73c54b8 1540 "--timeout", timeout,
4a36297c
LP		 1541 "--log-level", log_level,
1542 "--log-target",
1543 };
1544
1545 _cleanup_strv_free_ char **env_block = NULL;
f16890f8 1546 usec_t watchdog_timer = 0;
e73c54b8 1547 size_t pos = 7;
4a36297c
LP		 1548 int r;
1549
7eb35049 1550 assert(shutdown_verb);
234519ae 1551 assert(!command_line[pos]);
4a36297c
LP		 1552 env_block = strv_copy(environ);
1553
1554 xsprintf(log_level, "%d", log_get_max_level());
e73c54b8 1555 xsprintf(timeout, "%" PRI_USEC "us", arg_default_timeout_stop_usec);
4a36297c
LP		 1556
1557 switch (log_get_target()) {
1558
1559 case LOG_TARGET_KMSG:
1560 case LOG_TARGET_JOURNAL_OR_KMSG:
1561 case LOG_TARGET_SYSLOG_OR_KMSG:
1562 command_line[pos++] = "kmsg";
1563 break;
1564
1565 case LOG_TARGET_NULL:
1566 command_line[pos++] = "null";
1567 break;
1568
1569 case LOG_TARGET_CONSOLE:
1570 default:
1571 command_line[pos++] = "console";
1572 break;
1573 };
1574
1575 if (log_get_show_color())
1576 command_line[pos++] = "--log-color";
1577
1578 if (log_get_show_location())
1579 command_line[pos++] = "--log-location";
1580
c5673ed0
DS		 1581 if (log_get_show_time())
1582 command_line[pos++] = "--log-time";
1583
4a36297c
LP		 1584 if (streq(shutdown_verb, "exit")) {
1585 command_line[pos++] = "--exit-code";
1586 command_line[pos++] = exit_code;
1587 xsprintf(exit_code, "%d", retval);
1588 }
1589
1590 assert(pos < ELEMENTSOF(command_line));
1591
acafd7d8 1592 if (streq(shutdown_verb, "reboot"))
65224c1d 1593 watchdog_timer = arg_reboot_watchdog;
acafd7d8
LB		 1594 else if (streq(shutdown_verb, "kexec"))
1595 watchdog_timer = arg_kexec_watchdog;
1596
f16890f8
FB		 1597 /* If we reboot or kexec let's set the shutdown watchdog and tell the
1598 * shutdown binary to repeatedly ping it */
1599 r = watchdog_setup(watchdog_timer);
1600 watchdog_close(r < 0);
4a36297c 1601
f16890f8
FB		 1602 /* Tell the binary how often to ping, ignore failure */
1603 (void) strv_extendf(&env_block, "WATCHDOG_USEC="USEC_FMT, watchdog_timer);
8a2c1fbf 1604
f16890f8
FB		 1605 if (arg_watchdog_device)
1606 (void) strv_extendf(&env_block, "WATCHDOG_DEVICE=%s", arg_watchdog_device);
4a36297c 1607
3178d23d
FB		 1608 /* Avoid the creation of new processes forked by the kernel; at this
1609 * point, we will not listen to the signals anyway */
4a36297c
LP		 1610 if (detect_container() <= 0)
1611 (void) cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER);
1612
1613 execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block);
1614 return -errno;
1615}
1616
e839bafd
LP		 1617static void initialize_clock(void) {
1618 int r;
1619
3753325b
LP		 1620 /* This is called very early on, before we parse the kernel command line or otherwise figure out why
1621 * we are running, but only once. */
1622
e839bafd
LP		 1623 if (clock_is_localtime(NULL) > 0) {
1624 int min;
1625
ff3a7019 1626 /* The very first call of settimeofday() also does a time warp in the kernel.
e839bafd 1627 *
ff3a7019
ZJS		 1628 * In the rtc-in-local time mode, we set the kernel's timezone, and rely on external tools to
1629 * take care of maintaining the RTC and do all adjustments. This matches the behavior of
1630 * Windows, which leaves the RTC alone if the registry tells that the RTC runs in UTC.
e839bafd
LP		 1631 */
1632 r = clock_set_timezone(&min);
1633 if (r < 0)
1634 log_error_errno(r, "Failed to apply local time delta, ignoring: %m");
1635 else
1636 log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min);
1637
d46b79bb 1638 } else if (!in_initrd())
e839bafd
LP		 1639 /*
1640 * Do a dummy very first call to seal the kernel's time warp magic.
1641 *
ff3a7019
ZJS		 1642 * Do not call this from inside the initrd. The initrd might not carry /etc/adjtime with
1643 * LOCAL, but the real system could be set up that way. In such case, we need to delay the
1644 * time-warp or the sealing until we reach the real system.
e839bafd 1645 *
ff3a7019
ZJS		 1646 * Do no set the kernel's timezone. The concept of local time cannot be supported reliably,
1647 * the time will jump or be incorrect at every daylight saving time change. All kernel local
1648 * time concepts will be treated as UTC that way.
e839bafd
LP		 1649 */
1650 (void) clock_reset_timewarp();
e839bafd 1651
b10abe4b
EI		 1652 ClockChangeDirection change_dir;
1653 r = clock_apply_epoch(&change_dir);
1654 if (r > 0 && change_dir == CLOCK_CHANGE_FORWARD)
e839bafd 1655 log_info("System time before build time, advancing clock.");
b10abe4b
EI		 1656 else if (r > 0 && change_dir == CLOCK_CHANGE_BACKWARD)
1657 log_info("System time is further ahead than %s after build time, resetting clock to build time.",
1658 FORMAT_TIMESPAN(CLOCK_VALID_RANGE_USEC_MAX, USEC_PER_DAY));
1659 else if (r < 0 && change_dir == CLOCK_CHANGE_FORWARD)
1660 log_error_errno(r, "Current system time is before build time, but cannot correct: %m");
1661 else if (r < 0 && change_dir == CLOCK_CHANGE_BACKWARD)
1662 log_error_errno(r, "Current system time is further ahead %s after build time, but cannot correct: %m",
1663 FORMAT_TIMESPAN(CLOCK_VALID_RANGE_USEC_MAX, USEC_PER_DAY));
e839bafd
LP		 1664}
1665
3753325b
LP		 1666static void apply_clock_update(void) {
1667 struct timespec ts;
1668
1669 /* This is called later than initialize_clock(), i.e. after we parsed configuration files/kernel
1670 * command line and such. */
1671
1672 if (arg_clock_usec == 0)
1673 return;
1674
45250e66
LP		 1675 if (getpid_cached() != 1)
1676 return;
1677
3753325b
LP		 1678 if (clock_settime(CLOCK_REALTIME, timespec_store(&ts, arg_clock_usec)) < 0)
1679 log_error_errno(errno, "Failed to set system clock to time specified on kernel command line: %m");
04f5c018 1680 else
3753325b 1681 log_info("Set system clock to %s, as specified on the kernel command line.",
04f5c018 1682 FORMAT_TIMESTAMP(arg_clock_usec));
3753325b
LP		 1683}
1684
d247f232 1685static void cmdline_take_random_seed(void) {
d247f232
LP		 1686 size_t suggested;
1687 int r;
1688
1689 if (arg_random_seed_size == 0)
1690 return;
1691
1692 if (getpid_cached() != 1)
1693 return;
1694
1695 assert(arg_random_seed);
1696 suggested = random_pool_size();
1697
1698 if (arg_random_seed_size < suggested)
1699 log_warning("Random seed specified on kernel command line has size %zu, but %zu bytes required to fill entropy pool.",
1700 arg_random_seed_size, suggested);
1701
61bd7d1e 1702 r = random_write_entropy(-1, arg_random_seed, arg_random_seed_size, true);
d247f232
LP		 1703 if (r < 0) {
1704 log_warning_errno(r, "Failed to credit entropy specified on kernel command line, ignoring: %m");
1705 return;
1706 }
1707
1708 log_notice("Successfully credited entropy passed on kernel command line.\n"
ff3a7019
ZJS		 1709 "Note that the seed provided this way is accessible to unprivileged programs. "
1710 "This functionality should not be used outside of testing environments.");
d247f232
LP		 1711}
1712
1e41242e 1713static void initialize_coredump(bool skip_setup) {
752bcb77 1714#if ENABLE_COREDUMP
1e41242e
LP		 1715 if (getpid_cached() != 1)
1716 return;
1717
ff3a7019
ZJS		 1718 /* Don't limit the core dump size, so that coredump handlers such as systemd-coredump (which honour
1719 * the limit) will process core dumps for system services by default. */
1e41242e
LP		 1720 if (setrlimit(RLIMIT_CORE, &RLIMIT_MAKE_CONST(RLIM_INFINITY)) < 0)
1721 log_warning_errno(errno, "Failed to set RLIMIT_CORE: %m");
1722
ff3a7019
ZJS		 1723 /* But at the same time, turn off the core_pattern logic by default, so that no coredumps are stored
1724 * until the systemd-coredump tool is enabled via sysctl. However it can be changed via the kernel
1725 * command line later so core dumps can still be generated during early startup and in initramfs. */
1e41242e 1726 if (!skip_setup)
e557b1a6 1727 disable_coredumps();
752bcb77 1728#endif
1e41242e
LP		 1729}
1730
c6885f5f
FB		 1731static void initialize_core_pattern(bool skip_setup) {
1732 int r;
1733
1734 if (skip_setup || !arg_early_core_pattern)
1735 return;
1736
1737 if (getpid_cached() != 1)
1738 return;
1739
57512c89 1740 r = write_string_file("/proc/sys/kernel/core_pattern", arg_early_core_pattern, WRITE_STRING_FILE_DISABLE_BUFFER);
c6885f5f 1741 if (r < 0)
ff3a7019
ZJS		 1742 log_warning_errno(r, "Failed to write '%s' to /proc/sys/kernel/core_pattern, ignoring: %m",
1743 arg_early_core_pattern);
c6885f5f
FB		 1744}
1745
61fbbac1
ZJS		 1746static void update_cpu_affinity(bool skip_setup) {
1747 _cleanup_free_ char *mask = NULL;
1748
1749 if (skip_setup || !arg_cpu_affinity.set)
1750 return;
1751
1752 assert(arg_cpu_affinity.allocated > 0);
1753
1754 mask = cpu_set_to_string(&arg_cpu_affinity);
1755 log_debug("Setting CPU affinity to %s.", strnull(mask));
1756
1757 if (sched_setaffinity(0, arg_cpu_affinity.allocated, arg_cpu_affinity.set) < 0)
1758 log_warning_errno(errno, "Failed to set CPU affinity: %m");
1759}
1760
b070c7c0
MS		 1761static void update_numa_policy(bool skip_setup) {
1762 int r;
1763 _cleanup_free_ char *nodes = NULL;
1764 const char * policy = NULL;
1765
1766 if (skip_setup || !mpol_is_valid(numa_policy_get_type(&arg_numa_policy)))
1767 return;
1768
1769 if (DEBUG_LOGGING) {
1770 policy = mpol_to_string(numa_policy_get_type(&arg_numa_policy));
1771 nodes = cpu_set_to_range_string(&arg_numa_policy.nodes);
1772 log_debug("Setting NUMA policy to %s, with nodes %s.", strnull(policy), strnull(nodes));
1773 }
1774
1775 r = apply_numa_policy(&arg_numa_policy);
1776 if (r == -EOPNOTSUPP)
1777 log_debug_errno(r, "NUMA support not available, ignoring.");
1778 else if (r < 0)
1779 log_warning_errno(r, "Failed to set NUMA memory policy: %m");
1780}
1781
19fd72df
LP		 1782static void filter_args(
1783 const char* dst[],
1784 size_t *dst_index,
1785 char **src,
1786 int argc) {
1787
846f1da4 1788 assert(dst);
19fd72df 1789 assert(dst_index);
846f1da4
ZJS		 1790
1791 /* Copy some filtered arguments into the dst array from src. */
1792 for (int i = 1; i < argc; i++) {
1793 if (STR_IN_SET(src[i],
1794 "--switched-root",
1795 "--system",
1796 "--user"))
1797 continue;
1798
1799 if (startswith(src[i], "--deserialize="))
1800 continue;
1801 if (streq(src[i], "--deserialize")) {
1802 i++; /* Skip the argument too */
1803 continue;
1804 }
1805
1806 /* Skip target unit designators. We already acted upon this information and have queued
1807 * appropriate jobs. We don't want to redo all this after reexecution. */
1808 if (startswith(src[i], "--unit="))
1809 continue;
1810 if (streq(src[i], "--unit")) {
1811 i++; /* Skip the argument too */
1812 continue;
1813 }
1814
1815 if (startswith(src[i],
1816 in_initrd() ? "rd.systemd.unit=" : "systemd.unit="))
1817 continue;
1818
1819 if (runlevel_to_target(src[i]))
1820 continue;
1821
1822 /* Seems we have a good old option. Let's pass it over to the new instance. */
19fd72df 1823 dst[(*dst_index)++] = src[i];
846f1da4
ZJS		 1824 }
1825}
1826
3c7878f9
LP		 1827static void do_reexecute(
1828 int argc,
846f1da4 1829 char* argv[],
3c7878f9
LP		 1830 const struct rlimit *saved_rlimit_nofile,
1831 const struct rlimit *saved_rlimit_memlock,
1832 FDSet *fds,
1833 const char *switch_root_dir,
1834 const char *switch_root_init,
1835 const char **ret_error_message) {
1836
19fd72df 1837 size_t i, args_size;
3c7878f9
LP		 1838 const char **args;
1839 int r;
1840
19fd72df 1841 assert(argc >= 0);
3c7878f9
LP		 1842 assert(saved_rlimit_nofile);
1843 assert(saved_rlimit_memlock);
1844 assert(ret_error_message);
1845
ff3a7019
ZJS		 1846 /* Close and disarm the watchdog, so that the new instance can reinitialize it, but doesn't get
1847 * rebooted while we do that */
3c7878f9
LP		 1848 watchdog_close(true);
1849
ddfa8b0b
LP		 1850 /* Reset RLIMIT_NOFILE + RLIMIT_MEMLOCK back to the kernel defaults, so that the new systemd can pass
1851 * the kernel default to its child processes */
1852 if (saved_rlimit_nofile->rlim_cur != 0)
3c7878f9 1853 (void) setrlimit(RLIMIT_NOFILE, saved_rlimit_nofile);
ddfa8b0b 1854 if (saved_rlimit_memlock->rlim_cur != RLIM_INFINITY)
3c7878f9
LP		 1855 (void) setrlimit(RLIMIT_MEMLOCK, saved_rlimit_memlock);
1856
1857 if (switch_root_dir) {
ff3a7019
ZJS		 1858 /* Kill all remaining processes from the initrd, but don't wait for them, so that we can
1859 * handle the SIGCHLD for them after deserializing. */
e73c54b8 1860 broadcast_signal(SIGTERM, false, true, arg_default_timeout_stop_usec);
3c7878f9
LP		 1861
1862 /* And switch root with MS_MOVE, because we remove the old directory afterwards and detach it. */
1863 r = switch_root(switch_root_dir, "/mnt", true, MS_MOVE);
1864 if (r < 0)
1865 log_error_errno(r, "Failed to switch root, trying to continue: %m");
1866 }
1867
846f1da4 1868 args_size = argc + 6;
3c7878f9
LP		 1869 args = newa(const char*, args_size);
1870
1871 if (!switch_root_init) {
846f1da4 1872 char sfd[DECIMAL_STR_MAX(int)];
3c7878f9 1873
ff3a7019
ZJS		 1874 /* First try to spawn ourselves with the right path, and with full serialization. We do this
1875 * only if the user didn't specify an explicit init to spawn. */
3c7878f9
LP		 1876
1877 assert(arg_serialization);
1878 assert(fds);
1879
1880 xsprintf(sfd, "%i", fileno(arg_serialization));
1881
846f1da4
ZJS		 1882 i = 1; /* Leave args[0] empty for now. */
1883 filter_args(args, &i, argv, argc);
1884
3c7878f9
LP		 1885 if (switch_root_dir)
1886 args[i++] = "--switched-root";
1887 args[i++] = arg_system ? "--system" : "--user";
1888 args[i++] = "--deserialize";
1889 args[i++] = sfd;
1890 args[i++] = NULL;
1891
1892 assert(i <= args_size);
1893
1894 /*
ff3a7019
ZJS		 1895 * We want valgrind to print its memory usage summary before reexecution. Valgrind won't do
1896 * this is on its own on exec(), but it will do it on exit(). Hence, to ensure we get a
1897 * summary here, fork() off a child, let it exit() cleanly, so that it prints the summary,
1898 * and wait() for it in the parent, before proceeding into the exec().
3c7878f9
LP		 1899 */
1900 valgrind_summary_hack();
1901
846f1da4 1902 args[0] = SYSTEMD_BINARY_PATH;
3c7878f9 1903 (void) execv(args[0], (char* const*) args);
846f1da4 1904 log_debug_errno(errno, "Failed to execute our own binary %s, trying fallback: %m", args[0]);
3c7878f9
LP		 1905 }
1906
ff3a7019
ZJS		 1907 /* Try the fallback, if there is any, without any serialization. We pass the original argv[] and
1908 * envp[]. (Well, modulo the ordering changes due to getopt() in argv[], and some cleanups in envp[],
1909 * but let's hope that doesn't matter.) */
3c7878f9
LP		 1910
1911 arg_serialization = safe_fclose(arg_serialization);
1912 fds = fdset_free(fds);
1913
1914 /* Reopen the console */
1915 (void) make_console_stdio();
1916
846f1da4
ZJS		 1917 i = 1; /* Leave args[0] empty for now. */
1918 for (int j = 1; j <= argc; j++)
3c7878f9 1919 args[i++] = argv[j];
3c7878f9
LP		 1920 assert(i <= args_size);
1921
5238e957 1922 /* Re-enable any blocked signals, especially important if we switch from initial ramdisk to init=... */
3c7878f9
LP		 1923 (void) reset_all_signal_handlers();
1924 (void) reset_signal_mask();
595225af 1925 (void) rlimit_nofile_safe();
3c7878f9
LP		 1926
1927 if (switch_root_init) {
1928 args[0] = switch_root_init;
a5cede8c 1929 (void) execve(args[0], (char* const*) args, saved_env);
846f1da4 1930 log_warning_errno(errno, "Failed to execute configured init %s, trying fallback: %m", args[0]);
3c7878f9
LP		 1931 }
1932
1933 args[0] = "/sbin/init";
1934 (void) execv(args[0], (char* const*) args);
1935 r = -errno;
1936
1937 manager_status_printf(NULL, STATUS_TYPE_EMERGENCY,
1938 ANSI_HIGHLIGHT_RED " !! " ANSI_NORMAL,
1939 "Failed to execute /sbin/init");
1940
1941 if (r == -ENOENT) {
1942 log_warning("No /sbin/init, trying fallback");
1943
1944 args[0] = "/bin/sh";
1945 args[1] = NULL;
a5cede8c 1946 (void) execve(args[0], (char* const*) args, saved_env);
3c7878f9
LP		 1947 log_error_errno(errno, "Failed to execute /bin/sh, giving up: %m");
1948 } else
1949 log_warning_errno(r, "Failed to execute /sbin/init, giving up: %m");
1950
1951 *ret_error_message = "Failed to execute fallback shell";
1952}
1953
7eb35049
LP		 1954static int invoke_main_loop(
1955 Manager *m,
a9fd4cd1
FB		 1956 const struct rlimit *saved_rlimit_nofile,
1957 const struct rlimit *saved_rlimit_memlock,
7eb35049
LP		 1958 bool *ret_reexecute,
1959 int *ret_retval, /* Return parameters relevant for shutting down */
1960 const char **ret_shutdown_verb, /* … */
1961 FDSet **ret_fds, /* Return parameters for reexecuting */
1962 char **ret_switch_root_dir, /* … */
1963 char **ret_switch_root_init, /* … */
1964 const char **ret_error_message) {
1965
1966 int r;
1967
1968 assert(m);
a9fd4cd1
FB		 1969 assert(saved_rlimit_nofile);
1970 assert(saved_rlimit_memlock);
7eb35049
LP		 1971 assert(ret_reexecute);
1972 assert(ret_retval);
1973 assert(ret_shutdown_verb);
1974 assert(ret_fds);
1975 assert(ret_switch_root_dir);
1976 assert(ret_switch_root_init);
1977 assert(ret_error_message);
1978
1979 for (;;) {
1980 r = manager_loop(m);
1981 if (r < 0) {
1982 *ret_error_message = "Failed to run main loop";
1983 return log_emergency_errno(r, "Failed to run main loop: %m");
1984 }
1985
3ca4d0b3 1986 switch ((ManagerObjective) r) {
7eb35049 1987
a6ecbf83 1988 case MANAGER_RELOAD: {
bda7d78b 1989 LogTarget saved_log_target;
a6ecbf83
FB		 1990 int saved_log_level;
1991
7eb35049
LP		 1992 log_info("Reloading.");
1993
ff3a7019
ZJS		 1994 /* First, save any overridden log level/target, then parse the configuration file,
1995 * which might change the log level to new settings. */
bda7d78b 1996
a6ecbf83 1997 saved_log_level = m->log_level_overridden ? log_get_max_level() : -1;
bda7d78b 1998 saved_log_target = m->log_target_overridden ? log_get_target() : _LOG_TARGET_INVALID;
a6ecbf83 1999
a9fd4cd1 2000 (void) parse_configuration(saved_rlimit_nofile, saved_rlimit_memlock);
7eb35049
LP		 2001
2002 set_manager_defaults(m);
986935cf 2003 set_manager_settings(m);
7eb35049 2004
61fbbac1 2005 update_cpu_affinity(false);
b070c7c0 2006 update_numa_policy(false);
61fbbac1 2007
a6ecbf83
FB		 2008 if (saved_log_level >= 0)
2009 manager_override_log_level(m, saved_log_level);
bda7d78b
FB		 2010 if (saved_log_target >= 0)
2011 manager_override_log_target(m, saved_log_target);
a6ecbf83 2012
7eb35049
LP		 2013 r = manager_reload(m);
2014 if (r < 0)
ff3a7019
ZJS		 2015 /* Reloading failed before the point of no return.
2016 * Let's continue running as if nothing happened. */
7a35fa24 2017 m->objective = MANAGER_OK;
7eb35049
LP		 2018
2019 break;
a6ecbf83 2020 }
7eb35049
LP		 2021
2022 case MANAGER_REEXECUTE:
2023
2024 r = prepare_reexecute(m, &arg_serialization, ret_fds, false);
2025 if (r < 0) {
2026 *ret_error_message = "Failed to prepare for reexecution";
2027 return r;
2028 }
2029
2030 log_notice("Reexecuting.");
2031
2032 *ret_reexecute = true;
2033 *ret_retval = EXIT_SUCCESS;
2034 *ret_shutdown_verb = NULL;
2035 *ret_switch_root_dir = *ret_switch_root_init = NULL;
2036
2037 return 0;
2038
2039 case MANAGER_SWITCH_ROOT:
2040 if (!m->switch_root_init) {
2041 r = prepare_reexecute(m, &arg_serialization, ret_fds, true);
2042 if (r < 0) {
2043 *ret_error_message = "Failed to prepare for reexecution";
2044 return r;
2045 }
2046 } else
2047 *ret_fds = NULL;
2048
2049 log_notice("Switching root.");
2050
2051 *ret_reexecute = true;
2052 *ret_retval = EXIT_SUCCESS;
2053 *ret_shutdown_verb = NULL;
2054
2055 /* Steal the switch root parameters */
49052946
YW		 2056 *ret_switch_root_dir = TAKE_PTR(m->switch_root);
2057 *ret_switch_root_init = TAKE_PTR(m->switch_root_init);
7eb35049
LP		 2058
2059 return 0;
2060
2061 case MANAGER_EXIT:
2062
2063 if (MANAGER_IS_USER(m)) {
2064 log_debug("Exit.");
2065
2066 *ret_reexecute = false;
2067 *ret_retval = m->return_value;
2068 *ret_shutdown_verb = NULL;
2069 *ret_fds = NULL;
2070 *ret_switch_root_dir = *ret_switch_root_init = NULL;
2071
2072 return 0;
2073 }
2074
2075 _fallthrough_;
2076 case MANAGER_REBOOT:
2077 case MANAGER_POWEROFF:
2078 case MANAGER_HALT:
2079 case MANAGER_KEXEC: {
af41e508
LP		 2080 static const char * const table[_MANAGER_OBJECTIVE_MAX] = {
2081 [MANAGER_EXIT] = "exit",
2082 [MANAGER_REBOOT] = "reboot",
7eb35049 2083 [MANAGER_POWEROFF] = "poweroff",
af41e508
LP		 2084 [MANAGER_HALT] = "halt",
2085 [MANAGER_KEXEC] = "kexec",
7eb35049
LP		 2086 };
2087
2088 log_notice("Shutting down.");
2089
2090 *ret_reexecute = false;
2091 *ret_retval = m->return_value;
af41e508 2092 assert_se(*ret_shutdown_verb = table[m->objective]);
7eb35049
LP		 2093 *ret_fds = NULL;
2094 *ret_switch_root_dir = *ret_switch_root_init = NULL;
2095
2096 return 0;
2097 }
2098
2099 default:
04499a70 2100 assert_not_reached();
7eb35049
LP		 2101 }
2102 }
2103}
2104
31aef7ff
LP		 2105static void log_execution_mode(bool *ret_first_boot) {
2106 assert(ret_first_boot);
2107
2108 if (arg_system) {
2109 int v;
2110
e7b18106 2111 log_info("systemd " GIT_VERSION " running in %ssystem mode (%s)",
91b79ba8
ZJS		 2112 arg_action == ACTION_TEST ? "test " : "",
2113 systemd_features);
31aef7ff
LP		 2114
2115 v = detect_virtualization();
2116 if (v > 0)
2117 log_info("Detected virtualization %s.", virtualization_to_string(v));
2118
2119 log_info("Detected architecture %s.", architecture_to_string(uname_architecture()));
2120
2121 if (in_initrd()) {
2122 *ret_first_boot = false;
2123 log_info("Running in initial RAM disk.");
2124 } else {
583cef3b
HS		 2125 int r;
2126 _cleanup_free_ char *id_text = NULL;
2127
2128 /* Let's check whether we are in first boot. We use /etc/machine-id as flag file
2129 * for this: If it is missing or contains the value "uninitialized", this is the
2130 * first boot. In any other case, it is not. This allows container managers and
2131 * installers to provision a couple of files already. If the container manager
2132 * wants to provision the machine ID itself it should pass $container_uuid to PID 1. */
2133
2134 r = read_one_line_file("/etc/machine-id", &id_text);
2135 if (r < 0 || streq(id_text, "uninitialized")) {
2136 if (r < 0 && r != -ENOENT)
2137 log_warning_errno(r, "Unexpected error while reading /etc/machine-id, ignoring: %m");
2138
2139 *ret_first_boot = true;
2140 log_info("Detected first boot.");
2141 } else {
2142 *ret_first_boot = false;
2143 log_debug("Detected initialized system, this is not the first boot.");
2144 }
31aef7ff
LP		 2145 }
2146 } else {
b9e90f3a 2147 if (DEBUG_LOGGING) {
c2b2df60 2148 _cleanup_free_ char *t = NULL;
31aef7ff 2149
b9e90f3a 2150 t = uid_to_name(getuid());
91b79ba8
ZJS		 2151 log_debug("systemd " GIT_VERSION " running in %suser mode for user " UID_FMT "/%s. (%s)",
2152 arg_action == ACTION_TEST ? " test" : "",
2153 getuid(), strna(t), systemd_features);
b9e90f3a 2154 }
31aef7ff
LP		 2155
2156 *ret_first_boot = false;
2157 }
2158}
2159
5afbaa36
LP		 2160static int initialize_runtime(
2161 bool skip_setup,
3023f2fe 2162 bool first_boot,
5afbaa36
LP		 2163 struct rlimit *saved_rlimit_nofile,
2164 struct rlimit *saved_rlimit_memlock,
2165 const char **ret_error_message) {
5afbaa36
LP		 2166 int r;
2167
2168 assert(ret_error_message);
2169
2170 /* Sets up various runtime parameters. Many of these initializations are conditionalized:
2171 *
2172 * - Some only apply to --system instances
2173 * - Some only apply to --user instances
2174 * - Some only apply when we first start up, but not when we reexecute
2175 */
2176
2d776038
LP		 2177 if (arg_action != ACTION_RUN)
2178 return 0;
2179
61fbbac1 2180 update_cpu_affinity(skip_setup);
b070c7c0 2181 update_numa_policy(skip_setup);
61fbbac1 2182
3c3c6cb9 2183 if (arg_system) {
5238e957 2184 /* Make sure we leave a core dump without panicking the kernel. */
3c3c6cb9 2185 install_crash_handler();
5afbaa36 2186
3c3c6cb9 2187 if (!skip_setup) {
143fadf3 2188 r = mount_cgroup_controllers();
3c3c6cb9
LP		 2189 if (r < 0) {
2190 *ret_error_message = "Failed to mount cgroup hierarchies";
2191 return r;
2192 }
2193
2194 status_welcome();
b6fad306 2195 (void) hostname_setup(true);
3023f2fe
HS		 2196 /* Force transient machine-id on first boot. */
2197 machine_id_setup(NULL, first_boot, arg_machine_id, NULL);
df883de9 2198 (void) loopback_setup();
3c3c6cb9 2199 bump_unix_max_dgram_qlen();
a8b627aa 2200 bump_file_max_and_nr_open();
3c3c6cb9
LP		 2201 test_usr();
2202 write_container_id();
2203 }
8a2c1fbf 2204
3c3c6cb9
LP		 2205 if (arg_watchdog_device) {
2206 r = watchdog_set_device(arg_watchdog_device);
2207 if (r < 0)
2208 log_warning_errno(r, "Failed to set watchdog device to %s, ignoring: %m", arg_watchdog_device);
2209 }
32429805
LP		 2210 } else {
2211 _cleanup_free_ char *p = NULL;
2212
2213 /* Create the runtime directory and place the inaccessible device nodes there, if we run in
2214 * user mode. In system mode mount_setup() already did that. */
2215
2216 r = xdg_user_runtime_dir(&p, "/systemd");
2217 if (r < 0) {
2218 *ret_error_message = "$XDG_RUNTIME_DIR is not set";
2219 return log_emergency_errno(r, "Failed to determine $XDG_RUNTIME_DIR path: %m");
2220 }
2221
e813a74a 2222 (void) mkdir_p_label(p, 0755);
32429805 2223 (void) make_inaccessible_nodes(p, UID_INVALID, GID_INVALID);
3c3c6cb9 2224 }
5afbaa36
LP		 2225
2226 if (arg_timer_slack_nsec != NSEC_INFINITY)
2227 if (prctl(PR_SET_TIMERSLACK, arg_timer_slack_nsec) < 0)
3a671cd1 2228 log_warning_errno(errno, "Failed to adjust timer slack, ignoring: %m");
5afbaa36
LP		 2229
2230 if (arg_system && !cap_test_all(arg_capability_bounding_set)) {
2231 r = capability_bounding_set_drop_usermode(arg_capability_bounding_set);
2232 if (r < 0) {
2233 *ret_error_message = "Failed to drop capability bounding set of usermode helpers";
2234 return log_emergency_errno(r, "Failed to drop capability bounding set of usermode helpers: %m");
2235 }
2236
2237 r = capability_bounding_set_drop(arg_capability_bounding_set, true);
2238 if (r < 0) {
2239 *ret_error_message = "Failed to drop capability bounding set";
2240 return log_emergency_errno(r, "Failed to drop capability bounding set: %m");
2241 }
2242 }
2243
39362f6f
JB		 2244 if (arg_system && arg_no_new_privs) {
2245 if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) < 0) {
2246 *ret_error_message = "Failed to disable new privileges";
2247 return log_emergency_errno(errno, "Failed to disable new privileges: %m");
2248 }
2249 }
2250
5afbaa36
LP		 2251 if (arg_syscall_archs) {
2252 r = enforce_syscall_archs(arg_syscall_archs);
2253 if (r < 0) {
2254 *ret_error_message = "Failed to set syscall architectures";
2255 return r;
2256 }
2257 }
2258
2259 if (!arg_system)
2260 /* Become reaper of our children */
2261 if (prctl(PR_SET_CHILD_SUBREAPER, 1) < 0)
2262 log_warning_errno(errno, "Failed to make us a subreaper: %m");
2263
a17c1712
LP		 2264 /* Bump up RLIMIT_NOFILE for systemd itself */
2265 (void) bump_rlimit_nofile(saved_rlimit_nofile);
2266 (void) bump_rlimit_memlock(saved_rlimit_memlock);
5afbaa36
LP		 2267
2268 return 0;
2269}
2270
6acca5fc
LP		 2271static int do_queue_default_job(
2272 Manager *m,
2273 const char **ret_error_message) {
2274
2275 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
f1d075dc
ZJS		 2276 const char *unit;
2277 Job *job;
2278 Unit *target;
6acca5fc
LP		 2279 int r;
2280
8755dbad 2281 if (arg_default_unit)
f1d075dc 2282 unit = arg_default_unit;
8755dbad 2283 else if (in_initrd())
f1d075dc 2284 unit = SPECIAL_INITRD_TARGET;
8755dbad 2285 else
f1d075dc 2286 unit = SPECIAL_DEFAULT_TARGET;
8755dbad 2287
f1d075dc 2288 log_debug("Activating default unit: %s", unit);
8755dbad 2289
f1d075dc 2290 r = manager_load_startable_unit_or_warn(m, unit, NULL, &target);
8755dbad
ZJS		 2291 if (r < 0 && in_initrd() && !arg_default_unit) {
2292 /* Fall back to default.target, which we used to always use by default. Only do this if no
2293 * explicit configuration was given. */
2294
2295 log_info("Falling back to " SPECIAL_DEFAULT_TARGET ".");
6acca5fc 2296
8755dbad
ZJS		 2297 r = manager_load_startable_unit_or_warn(m, SPECIAL_DEFAULT_TARGET, NULL, &target);
2298 }
4109ede7 2299 if (r < 0) {
8755dbad 2300 log_info("Falling back to " SPECIAL_RESCUE_TARGET ".");
6acca5fc 2301
4109ede7 2302 r = manager_load_startable_unit_or_warn(m, SPECIAL_RESCUE_TARGET, NULL, &target);
6acca5fc 2303 if (r < 0) {
8755dbad
ZJS		 2304 *ret_error_message = r == -ERFKILL ? SPECIAL_RESCUE_TARGET " masked"
2305 : "Failed to load " SPECIAL_RESCUE_TARGET;
4109ede7 2306 return r;
6acca5fc
LP		 2307 }
2308 }
2309
2310 assert(target->load_state == UNIT_LOADED);
2311
f1d075dc 2312 r = manager_add_job(m, JOB_START, target, JOB_ISOLATE, NULL, &error, &job);
6acca5fc
LP		 2313 if (r == -EPERM) {
2314 log_debug_errno(r, "Default target could not be isolated, starting instead: %s", bus_error_message(&error, r));
2315
2316 sd_bus_error_free(&error);
2317
f1d075dc 2318 r = manager_add_job(m, JOB_START, target, JOB_REPLACE, NULL, &error, &job);
6acca5fc
LP		 2319 if (r < 0) {
2320 *ret_error_message = "Failed to start default target";
2321 return log_emergency_errno(r, "Failed to start default target: %s", bus_error_message(&error, r));
2322 }
2323
2324 } else if (r < 0) {
2325 *ret_error_message = "Failed to isolate default target";
2326 return log_emergency_errno(r, "Failed to isolate default target: %s", bus_error_message(&error, r));
c86c31d9
ZJS		 2327 } else
2328 log_info("Queued %s job for default target %s.",
2329 job_type_to_string(job->type),
04d232d8 2330 unit_status_string(job->unit, NULL));
6acca5fc 2331
f1d075dc 2332 m->default_unit_job_id = job->id;
6acca5fc
LP		 2333
2334 return 0;
2335}
2336
a9fd4cd1
FB		 2337static void save_rlimits(struct rlimit *saved_rlimit_nofile,
2338 struct rlimit *saved_rlimit_memlock) {
2339
2340 assert(saved_rlimit_nofile);
2341 assert(saved_rlimit_memlock);
2342
2343 if (getrlimit(RLIMIT_NOFILE, saved_rlimit_nofile) < 0)
2344 log_warning_errno(errno, "Reading RLIMIT_NOFILE failed, ignoring: %m");
2345
2346 if (getrlimit(RLIMIT_MEMLOCK, saved_rlimit_memlock) < 0)
2347 log_warning_errno(errno, "Reading RLIMIT_MEMLOCK failed, ignoring: %m");
2348}
2349
2350static void fallback_rlimit_nofile(const struct rlimit *saved_rlimit_nofile) {
2351 struct rlimit *rl;
2352
2353 if (arg_default_rlimit[RLIMIT_NOFILE])
2354 return;
2355
2356 /* Make sure forked processes get limits based on the original kernel setting */
2357
2358 rl = newdup(struct rlimit, saved_rlimit_nofile, 1);
2359 if (!rl) {
2360 log_oom();
2361 return;
2362 }
2363
2364 /* Bump the hard limit for system services to a substantially higher value. The default
2365 * hard limit current kernels set is pretty low (4K), mostly for historical
2366 * reasons. According to kernel developers, the fd handling in recent kernels has been
2367 * optimized substantially enough, so that we can bump the limit now, without paying too
2368 * high a price in memory or performance. Note however that we only bump the hard limit,
2369 * not the soft limit. That's because select() works the way it works, and chokes on fds
2370 * >= 1024. If we'd bump the soft limit globally, it might accidentally happen to
2371 * unexpecting programs that they get fds higher than what they can process using
2372 * select(). By only bumping the hard limit but leaving the low limit as it is we avoid
2373 * this pitfall: programs that are written by folks aware of the select() problem in mind
2374 * (and thus use poll()/epoll instead of select(), the way everybody should) can
2375 * explicitly opt into high fds by bumping their soft limit beyond 1024, to the hard limit
2376 * we pass. */
2377 if (arg_system) {
2378 int nr;
2379
2380 /* Get the underlying absolute limit the kernel enforces */
2381 nr = read_nr_open();
2382
2383 rl->rlim_max = MIN((rlim_t) nr, MAX(rl->rlim_max, (rlim_t) HIGH_RLIMIT_NOFILE));
2384 }
2385
2386 /* If for some reason we were invoked with a soft limit above 1024 (which should never
2387 * happen!, but who knows what we get passed in from pam_limit when invoked as --user
2388 * instance), then lower what we pass on to not confuse our children */
2389 rl->rlim_cur = MIN(rl->rlim_cur, (rlim_t) FD_SETSIZE);
2390
2391 arg_default_rlimit[RLIMIT_NOFILE] = rl;
2392}
2393
2394static void fallback_rlimit_memlock(const struct rlimit *saved_rlimit_memlock) {
2395 struct rlimit *rl;
2396
2397 /* Pass the original value down to invoked processes */
2398
2399 if (arg_default_rlimit[RLIMIT_MEMLOCK])
2400 return;
2401
2402 rl = newdup(struct rlimit, saved_rlimit_memlock, 1);
2403 if (!rl) {
2404 log_oom();
2405 return;
2406 }
2407
2408 arg_default_rlimit[RLIMIT_MEMLOCK] = rl;
2409}
2410
d55ed7de
ZJS		 2411static void setenv_manager_environment(void) {
2412 char **p;
2413 int r;
2414
2415 STRV_FOREACH(p, arg_manager_environment) {
2416 log_debug("Setting '%s' in our own environment.", *p);
2417
2418 r = putenv_dup(*p, true);
2419 if (r < 0)
2420 log_warning_errno(errno, "Failed to setenv \"%s\", ignoring: %m", *p);
2421 }
2422}
2423
fb39af4c
ZJS		 2424static void reset_arguments(void) {
2425 /* Frees/resets arg_* variables, with a few exceptions commented below. */
970777b5
LP		 2426
2427 arg_default_unit = mfree(arg_default_unit);
fb39af4c
ZJS		 2428
2429 /* arg_system — ignore */
2430
2431 arg_dump_core = true;
2432 arg_crash_chvt = -1;
2433 arg_crash_shell = false;
2434 arg_crash_reboot = false;
970777b5 2435 arg_confirm_spawn = mfree(arg_confirm_spawn);
fb39af4c 2436 arg_show_status = _SHOW_STATUS_INVALID;
36cf4507 2437 arg_status_unit_format = STATUS_UNIT_FORMAT_DEFAULT;
fb39af4c
ZJS		 2438 arg_switched_root = false;
2439 arg_pager_flags = 0;
2440 arg_service_watchdogs = true;
2441 arg_default_std_output = EXEC_OUTPUT_JOURNAL;
2442 arg_default_std_error = EXEC_OUTPUT_INHERIT;
2443 arg_default_restart_usec = DEFAULT_RESTART_USEC;
2444 arg_default_timeout_start_usec = DEFAULT_TIMEOUT_USEC;
2445 arg_default_timeout_stop_usec = DEFAULT_TIMEOUT_USEC;
2446 arg_default_timeout_abort_usec = DEFAULT_TIMEOUT_USEC;
2447 arg_default_timeout_abort_set = false;
2448 arg_default_start_limit_interval = DEFAULT_START_LIMIT_INTERVAL;
2449 arg_default_start_limit_burst = DEFAULT_START_LIMIT_BURST;
2450 arg_runtime_watchdog = 0;
65224c1d 2451 arg_reboot_watchdog = 10 * USEC_PER_MINUTE;
acafd7d8 2452 arg_kexec_watchdog = 0;
fb39af4c
ZJS		 2453 arg_early_core_pattern = NULL;
2454 arg_watchdog_device = NULL;
2455
970777b5 2456 arg_default_environment = strv_free(arg_default_environment);
d55ed7de 2457 arg_manager_environment = strv_free(arg_manager_environment);
fb39af4c
ZJS		 2458 rlimit_free_all(arg_default_rlimit);
2459
2460 arg_capability_bounding_set = CAP_ALL;
2461 arg_no_new_privs = false;
2462 arg_timer_slack_nsec = NSEC_INFINITY;
2463 arg_default_timer_accuracy_usec = 1 * USEC_PER_MINUTE;
2464
970777b5 2465 arg_syscall_archs = set_free(arg_syscall_archs);
61fbbac1 2466
fb39af4c
ZJS		 2467 /* arg_serialization — ignore */
2468
2469 arg_default_cpu_accounting = -1;
2470 arg_default_io_accounting = false;
2471 arg_default_ip_accounting = false;
2472 arg_default_blockio_accounting = false;
2473 arg_default_memory_accounting = MEMORY_ACCOUNTING_DEFAULT;
2474 arg_default_tasks_accounting = true;
3a0f06c4 2475 arg_default_tasks_max = DEFAULT_TASKS_MAX;
fb39af4c
ZJS		 2476 arg_machine_id = (sd_id128_t) {};
2477 arg_cad_burst_action = EMERGENCY_ACTION_REBOOT_FORCE;
2478 arg_default_oom_policy = OOM_STOP;
2479
61fbbac1 2480 cpu_set_reset(&arg_cpu_affinity);
b070c7c0 2481 numa_policy_reset(&arg_numa_policy);
d247f232
LP		 2482
2483 arg_random_seed = mfree(arg_random_seed);
2484 arg_random_seed_size = 0;
33d943d1 2485 arg_clock_usec = 0;
d4a402e4
LP		 2486
2487 arg_default_oom_score_adjust_set = false;
2488}
2489
2490static void determine_default_oom_score_adjust(void) {
2491 int r, a, b;
2492
2493 /* Run our services at slightly higher OOM score than ourselves. But let's be conservative here, and
2494 * do this only if we don't run as root (i.e. only if we are run in user mode, for an unprivileged
2495 * user). */
2496
2497 if (arg_default_oom_score_adjust_set)
2498 return;
2499
2500 if (getuid() == 0)
2501 return;
2502
2503 r = get_oom_score_adjust(&a);
2504 if (r < 0)
2505 return (void) log_warning_errno(r, "Failed to determine current OOM score adjustment value, ignoring: %m");
2506
2507 assert_cc(100 <= OOM_SCORE_ADJ_MAX);
2508 b = a >= OOM_SCORE_ADJ_MAX - 100 ? OOM_SCORE_ADJ_MAX : a + 100;
2509
2510 if (a == b)
2511 return;
2512
2513 arg_default_oom_score_adjust = b;
2514 arg_default_oom_score_adjust_set = true;
970777b5
LP		 2515}
2516
a9fd4cd1
FB		 2517static int parse_configuration(const struct rlimit *saved_rlimit_nofile,
2518 const struct rlimit *saved_rlimit_memlock) {
97d1fb94
LP		 2519 int r;
2520
a9fd4cd1
FB		 2521 assert(saved_rlimit_nofile);
2522 assert(saved_rlimit_memlock);
2523
fb39af4c
ZJS		 2524 /* Assign configuration defaults */
2525 reset_arguments();
2526
97d1fb94 2527 r = parse_config_file();
470a5e6d
ZJS		 2528 if (r < 0)
2529 log_warning_errno(r, "Failed to parse config file, ignoring: %m");
97d1fb94
LP		 2530
2531 if (arg_system) {
2532 r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, 0);
2533 if (r < 0)
2534 log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
2535 }
2536
a9fd4cd1
FB		 2537 /* Initialize some default rlimits for services if they haven't been configured */
2538 fallback_rlimit_nofile(saved_rlimit_nofile);
2539 fallback_rlimit_memlock(saved_rlimit_memlock);
2540
97d1fb94
LP		 2541 /* Note that this also parses bits from the kernel command line, including "debug". */
2542 log_parse_environment();
2543
db33214b 2544 /* Initialize the show status setting if it hasn't been set explicitly yet */
7a293242 2545 if (arg_show_status == _SHOW_STATUS_INVALID)
db33214b
LP		 2546 arg_show_status = SHOW_STATUS_YES;
2547
d4a402e4
LP		 2548 /* Slightly raise the OOM score for our services if we are running for unprivileged users. */
2549 determine_default_oom_score_adjust();
2550
d55ed7de
ZJS		 2551 /* Push variables into the manager environment block */
2552 setenv_manager_environment();
2553
a4303b40
DDM		 2554 /* Parse log environment variables again to take into account any new environment variables. */
2555 log_parse_environment();
2556
97d1fb94
LP		 2557 return 0;
2558}
2559
b0d7c989
LP		 2560static int safety_checks(void) {
2561
febf46a4 2562 if (getpid_cached() == 1 &&
baaa35ad
ZJS		 2563 arg_action != ACTION_RUN)
2564 return log_error_errno(SYNTHETIC_ERRNO(EPERM),
2565 "Unsupported execution mode while PID 1.");
febf46a4
LP		 2566
2567 if (getpid_cached() == 1 &&
baaa35ad
ZJS		 2568 !arg_system)
2569 return log_error_errno(SYNTHETIC_ERRNO(EPERM),
2570 "Can't run --user mode as PID 1.");
febf46a4
LP		 2571
2572 if (arg_action == ACTION_RUN &&
2573 arg_system &&
baaa35ad
ZJS		 2574 getpid_cached() != 1)
2575 return log_error_errno(SYNTHETIC_ERRNO(EPERM),
2576 "Can't run system mode unless PID 1.");
febf46a4 2577
b0d7c989 2578 if (arg_action == ACTION_TEST &&
baaa35ad
ZJS		 2579 geteuid() == 0)
2580 return log_error_errno(SYNTHETIC_ERRNO(EPERM),
2581 "Don't run test mode as root.");
b0d7c989
LP		 2582
2583 if (!arg_system &&
2584 arg_action == ACTION_RUN &&
baaa35ad
ZJS		 2585 sd_booted() <= 0)
2586 return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
2587 "Trying to run as user instance, but the system has not been booted with systemd.");
b0d7c989
LP		 2588
2589 if (!arg_system &&
2590 arg_action == ACTION_RUN &&
baaa35ad
ZJS		 2591 !getenv("XDG_RUNTIME_DIR"))
2592 return log_error_errno(SYNTHETIC_ERRNO(EUNATCH),
2593 "Trying to run as user instance, but $XDG_RUNTIME_DIR is not set.");
b0d7c989
LP		 2594
2595 if (arg_system &&
2596 arg_action == ACTION_RUN &&
baaa35ad
ZJS		 2597 running_in_chroot() > 0)
2598 return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
2599 "Cannot be run in a chroot() environment.");
b0d7c989
LP		 2600
2601 return 0;
2602}
2603
74da609f
LP		 2604static int initialize_security(
2605 bool *loaded_policy,
2606 dual_timestamp *security_start_timestamp,
2607 dual_timestamp *security_finish_timestamp,
2608 const char **ret_error_message) {
2609
2610 int r;
2611
2612 assert(loaded_policy);
2613 assert(security_start_timestamp);
2614 assert(security_finish_timestamp);
2615 assert(ret_error_message);
2616
2617 dual_timestamp_get(security_start_timestamp);
2618
97149f40 2619 r = mac_selinux_setup(loaded_policy);
74da609f
LP		 2620 if (r < 0) {
2621 *ret_error_message = "Failed to load SELinux policy";
2622 return r;
2623 }
2624
2625 r = mac_smack_setup(loaded_policy);
2626 if (r < 0) {
2627 *ret_error_message = "Failed to load SMACK policy";
2628 return r;
2629 }
2630
2ffadd3c
Y		 2631 r = mac_apparmor_setup();
2632 if (r < 0) {
2633 *ret_error_message = "Failed to load AppArmor policy";
2634 return r;
2635 }
2636
74da609f
LP		 2637 r = ima_setup();
2638 if (r < 0) {
2639 *ret_error_message = "Failed to load IMA policy";
2640 return r;
2641 }
2642
2643 dual_timestamp_get(security_finish_timestamp);
2644 return 0;
2645}
2646
efeb853f
LP		 2647static int collect_fds(FDSet **ret_fds, const char **ret_error_message) {
2648 int r;
2649
2650 assert(ret_fds);
2651 assert(ret_error_message);
2652
2653 r = fdset_new_fill(ret_fds);
2654 if (r < 0) {
2655 *ret_error_message = "Failed to allocate fd set";
2656 return log_emergency_errno(r, "Failed to allocate fd set: %m");
2657 }
2658
2659 fdset_cloexec(*ret_fds, true);
2660
2661 if (arg_serialization)
2662 assert_se(fdset_remove(*ret_fds, fileno(arg_serialization)) >= 0);
2663
2664 return 0;
2665}
2666
2e51b31c
LP		 2667static void setup_console_terminal(bool skip_setup) {
2668
2669 if (!arg_system)
2670 return;
2671
2672 /* Become a session leader if we aren't one yet. */
2673 (void) setsid();
2674
ff3a7019
ZJS		 2675 /* If we are init, we connect stdin/stdout/stderr to /dev/null and make sure we don't have a
2676 * controlling tty. */
2e51b31c
LP		 2677 (void) release_terminal();
2678
2679 /* Reset the console, but only if this is really init and we are freshly booted */
2680 if (getpid_cached() == 1 && !skip_setup)
2681 (void) console_setup();
2682}
2683
aa40ff07
LP		 2684static bool early_skip_setup_check(int argc, char *argv[]) {
2685 bool found_deserialize = false;
aa40ff07 2686
ff3a7019
ZJS		 2687 /* Determine if this is a reexecution or normal bootup. We do the full command line parsing much
2688 * later, so let's just have a quick peek here. Note that if we have switched root, do all the
2689 * special setup things anyway, even if in that case we also do deserialization. */
aa40ff07 2690
431733b8 2691 for (int i = 1; i < argc; i++)
aa40ff07
LP		 2692 if (streq(argv[i], "--switched-root"))
2693 return false; /* If we switched root, don't skip the setup. */
2694 else if (streq(argv[i], "--deserialize"))
2695 found_deserialize = true;
aa40ff07
LP		 2696
2697 return found_deserialize; /* When we are deserializing, then we are reexecuting, hence avoid the extensive setup */
2698}
2699
0e06a031
LP		 2700static int save_env(void) {
2701 char **l;
2702
2703 l = strv_copy(environ);
2704 if (!l)
2705 return -ENOMEM;
2706
2707 strv_free_and_replace(saved_env, l);
2708 return 0;
2709}
2710
60918275 2711int main(int argc, char *argv[]) {
625e8690
LP		 2712
2713 dual_timestamp initrd_timestamp = DUAL_TIMESTAMP_NULL, userspace_timestamp = DUAL_TIMESTAMP_NULL, kernel_timestamp = DUAL_TIMESTAMP_NULL,
2714 security_start_timestamp = DUAL_TIMESTAMP_NULL, security_finish_timestamp = DUAL_TIMESTAMP_NULL;
ddfa8b0b
LP		 2715 struct rlimit saved_rlimit_nofile = RLIMIT_MAKE_CONST(0),
2716 saved_rlimit_memlock = RLIMIT_MAKE_CONST(RLIM_INFINITY); /* The original rlimits we passed
2717 * in. Note we use different values
2718 * for the two that indicate whether
2719 * these fields are initialized! */
625e8690
LP		 2720 bool skip_setup, loaded_policy = false, queue_default_job = false, first_boot = false, reexecute = false;
2721 char *switch_root_dir = NULL, *switch_root_init = NULL;
9d76d730 2722 usec_t before_startup, after_startup;
625e8690 2723 static char systemd[] = "systemd";
625e8690
LP		 2724 const char *shutdown_verb = NULL, *error_message = NULL;
2725 int r, retval = EXIT_FAILURE;
2726 Manager *m = NULL;
a16e1123 2727 FDSet *fds = NULL;
27b14a22 2728
d72a8f10 2729 /* SysV compatibility: redirect init → telinit */
6808a0bc 2730 redirect_telinit(argc, argv);
2cb1a60d 2731
d72a8f10 2732 /* Take timestamps early on */
c3a170f3
HH		 2733 dual_timestamp_from_monotonic(&kernel_timestamp, 0);
2734 dual_timestamp_get(&userspace_timestamp);
2735
d72a8f10 2736 /* Figure out whether we need to do initialize the system, or if we already did that because we are
ff3a7019 2737 * reexecuting. */
aa40ff07 2738 skip_setup = early_skip_setup_check(argc, argv);
d03bc1b8 2739
ff3a7019
ZJS		 2740 /* If we get started via the /sbin/init symlink then we are called 'init'. After a subsequent
2741 * reexecution we are then called 'systemd'. That is confusing, hence let's call us systemd
2742 * right-away. */
f3b6a3ed 2743 program_invocation_short_name = systemd;
eee8b7ab 2744 (void) prctl(PR_SET_NAME, systemd);
5d6b1584 2745
d72a8f10 2746 /* Save the original command line */
36fea155 2747 save_argc_argv(argc, argv);
f3b6a3ed 2748
0e06a031
LP		 2749 /* Save the original environment as we might need to restore it if we're requested to execute another
2750 * system manager later. */
2751 r = save_env();
2752 if (r < 0) {
2753 error_message = "Failed to copy environment block";
2754 goto finish;
2755 }
a5cede8c 2756
6fdb8de4 2757 /* Make sure that if the user says "syslog" we actually log to the journal. */
c1dc6153 2758 log_set_upgrade_syslog_to_journal(true);
bbe63281 2759
df0ff127 2760 if (getpid_cached() == 1) {
b5752d23
LP		 2761 /* When we run as PID 1 force system mode */
2762 arg_system = true;
2763
48a601fe 2764 /* Disable the umask logic */
90dc8c2e
MG		 2765 umask(0);
2766
ff3a7019
ZJS		 2767 /* Make sure that at least initially we do not ever log to journald/syslogd, because it might
2768 * not be activated yet (even though the log socket for it exists). */
d075092f
LP		 2769 log_set_prohibit_ipc(true);
2770
ff3a7019
ZJS		 2771 /* Always reopen /dev/console when running as PID 1 or one of its pre-execve() children. This
2772 * is important so that we never end up logging to any foreign stderr, for example if we have
2773 * to log in a child process right before execve()'ing the actual binary, at a point in time
2774 * where socket activation stderr/stdout area already set up. */
48a601fe 2775 log_set_always_reopen_console(true);
48a601fe 2776
92890452 2777 if (detect_container() <= 0) {
4f8d551f 2778
92890452 2779 /* Running outside of a container as PID 1 */
92890452
LP		 2780 log_set_target(LOG_TARGET_KMSG);
2781 log_open();
a866073d 2782
92890452
LP		 2783 if (in_initrd())
2784 initrd_timestamp = userspace_timestamp;
c3ba6250 2785
92890452
LP		 2786 if (!skip_setup) {
2787 r = mount_setup_early();
2788 if (r < 0) {
2789 error_message = "Failed to mount early API filesystems";
2790 goto finish;
2791 }
2792
0a2eef1e
LP		 2793 /* Let's open the log backend a second time, in case the first time didn't
2794 * work. Quite possibly we have mounted /dev just now, so /dev/kmsg became
2795 * available, and it previously wasn't. */
2796 log_open();
2797
6123dfaa
ZJS		 2798 disable_printk_ratelimit();
2799
92890452
LP		 2800 r = initialize_security(
2801 &loaded_policy,
2802 &security_start_timestamp,
2803 &security_finish_timestamp,
2804 &error_message);
2805 if (r < 0)
2806 goto finish;
d723cd65 2807 }
eee8b7ab 2808
92890452 2809 if (mac_selinux_init() < 0) {
a9ba0e32 2810 error_message = "Failed to initialize SELinux support";
96694e99 2811 goto finish;
92890452 2812 }
0b3325e7 2813
92890452
LP		 2814 if (!skip_setup)
2815 initialize_clock();
2816
ff3a7019
ZJS		 2817 /* Set the default for later on, but don't actually open the logs like this for
2818 * now. Note that if we are transitioning from the initrd there might still be
2819 * journal fd open, and we shouldn't attempt opening that before we parsed
2820 * /proc/cmdline which might redirect output elsewhere. */
92890452
LP		 2821 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
2822
2823 } else {
2824 /* Running inside a container, as PID 1 */
92890452
LP		 2825 log_set_target(LOG_TARGET_CONSOLE);
2826 log_open();
2827
2828 /* For later on, see above... */
2829 log_set_target(LOG_TARGET_JOURNAL);
2830
45250e66 2831 /* clear the kernel timestamp, because we are in a container */
92890452 2832 kernel_timestamp = DUAL_TIMESTAMP_NULL;
cb6531be 2833 }
7948c4df 2834
92890452 2835 initialize_coredump(skip_setup);
a866073d 2836
92890452
LP		 2837 r = fixup_environment();
2838 if (r < 0) {
2839 log_emergency_errno(r, "Failed to fix up PID 1 environment: %m");
2840 error_message = "Failed to fix up PID1 environment";
2841 goto finish;
2842 }
a866073d 2843
ff3a7019
ZJS		 2844 /* Try to figure out if we can use colors with the console. No need to do that for user
2845 * instances since they never log into the console. */
3a18b604 2846 log_show_color(colors_enabled());
92890452 2847
c76cf844
AK		 2848 r = make_null_stdio();
2849 if (r < 0)
92890452 2850 log_warning_errno(r, "Failed to redirect standard streams to /dev/null, ignoring: %m");
f84f9974 2851
a132bef0 2852 /* Load the kernel modules early. */
2e75e2a8
DM		 2853 if (!skip_setup)
2854 kmod_setup();
2e75e2a8 2855
3196e423 2856 /* Mount /proc, /sys and friends, so that /proc/cmdline and /proc/$PID/fd is available. */
f74349d8 2857 r = mount_setup(loaded_policy, skip_setup);
cb6531be
ZJS		 2858 if (r < 0) {
2859 error_message = "Failed to mount API filesystems";
8efe3c01 2860 goto finish;
cb6531be 2861 }
c18ecf03
LP		 2862
2863 /* The efivarfs is now mounted, let's read the random seed off it */
2864 (void) efi_take_random_seed();
209b2592
FB		 2865
2866 /* Cache command-line options passed from EFI variables */
2867 if (!skip_setup)
2868 (void) cache_efi_options_variable();
3196e423
LP		 2869 } else {
2870 /* Running as user instance */
2871 arg_system = false;
2872 log_set_target(LOG_TARGET_AUTO);
2873 log_open();
2874
2875 /* clear the kernel timestamp, because we are not PID 1 */
2876 kernel_timestamp = DUAL_TIMESTAMP_NULL;
2877
2878 if (mac_selinux_init() < 0) {
2879 error_message = "Failed to initialize SELinux support";
2880 goto finish;
2881 }
0c85a4f3 2882 }
4ade7963 2883
a9fd4cd1
FB		 2884 /* Save the original RLIMIT_NOFILE/RLIMIT_MEMLOCK so that we can reset it later when
2885 * transitioning from the initrd to the main systemd or suchlike. */
2886 save_rlimits(&saved_rlimit_nofile, &saved_rlimit_memlock);
2887
4ade7963 2888 /* Reset all signal handlers. */
ce30c8dc 2889 (void) reset_all_signal_handlers();
9c274488 2890 (void) ignore_signals(SIGNALS_IGNORE);
078e4539 2891
ffe5c01e
FB		 2892 (void) parse_configuration(&saved_rlimit_nofile, &saved_rlimit_memlock);
2893
2894 r = parse_argv(argc, argv);
2895 if (r < 0) {
2896 error_message = "Failed to parse commandline arguments";
f170852a 2897 goto finish;
ffe5c01e 2898 }
10c961b9 2899
b0d7c989
LP		 2900 r = safety_checks();
2901 if (r < 0)
fe783b03 2902 goto finish;
fe783b03 2903
5c08257b 2904 if (IN_SET(arg_action, ACTION_TEST, ACTION_HELP, ACTION_DUMP_CONFIGURATION_ITEMS, ACTION_DUMP_BUS_PROPERTIES, ACTION_BUS_INTROSPECT))
384c2c32 2905 pager_open(arg_pager_flags);
b0d7c989
LP		 2906
2907 if (arg_action != ACTION_RUN)
74e7579c 2908 skip_setup = true;
b87c2aa6 2909
fa0f4d8a 2910 if (arg_action == ACTION_HELP) {
37ec0fdd 2911 retval = help() < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
f170852a 2912 goto finish;
9ba0bc4e
ZJS		 2913 } else if (arg_action == ACTION_VERSION) {
2914 retval = version();
2915 goto finish;
fa0f4d8a 2916 } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
e537352b 2917 unit_dump_config_items(stdout);
22f4096c 2918 retval = EXIT_SUCCESS;
e537352b 2919 goto finish;
bbc1acab
YW		 2920 } else if (arg_action == ACTION_DUMP_BUS_PROPERTIES) {
2921 dump_bus_properties(stdout);
2922 retval = EXIT_SUCCESS;
2923 goto finish;
5c08257b
ZJS		 2924 } else if (arg_action == ACTION_BUS_INTROSPECT) {
2925 r = bus_manager_introspect_implementations(stdout, arg_bus_introspect);
2926 retval = r >= 0 ? EXIT_SUCCESS : EXIT_FAILURE;
2927 goto finish;
f170852a
LP		 2928 }
2929
4c701096 2930 assert_se(IN_SET(arg_action, ACTION_RUN, ACTION_TEST));
f170852a 2931
5a2e0c62
LP		 2932 /* Move out of the way, so that we won't block unmounts */
2933 assert_se(chdir("/") == 0);
2934
dea374e8 2935 if (arg_action == ACTION_RUN) {
d247f232
LP		 2936 if (!skip_setup) {
2937 /* Apply the systemd.clock_usec= kernel command line switch */
45250e66 2938 apply_clock_update();
a70c72a0 2939
d247f232
LP		 2940 /* Apply random seed from kernel command line */
2941 cmdline_take_random_seed();
2942 }
2943
c6885f5f
FB		 2944 /* A core pattern might have been specified via the cmdline. */
2945 initialize_core_pattern(skip_setup);
2946
efeb853f 2947 /* Close logging fds, in order not to confuse collecting passed fds and terminal logic below */
a70c72a0
LP		 2948 log_close();
2949
2950 /* Remember open file descriptors for later deserialization */
efeb853f
LP		 2951 r = collect_fds(&fds, &error_message);
2952 if (r < 0)
dea374e8 2953 goto finish;
a16e1123 2954
2e51b31c
LP		 2955 /* Give up any control of the console, but make sure its initialized. */
2956 setup_console_terminal(skip_setup);
56d96fc0 2957
a70c72a0
LP		 2958 /* Open the logging devices, if possible and necessary */
2959 log_open();
56d96fc0 2960 }
4ade7963 2961
31aef7ff 2962 log_execution_mode(&first_boot);
a5dab5ce 2963
2d776038 2964 r = initialize_runtime(skip_setup,
3023f2fe 2965 first_boot,
2d776038
LP		 2966 &saved_rlimit_nofile,
2967 &saved_rlimit_memlock,
2968 &error_message);
2969 if (r < 0)
2970 goto finish;
4096d6f5 2971
e0a3da1f
ZJS		 2972 r = manager_new(arg_system ? UNIT_FILE_SYSTEM : UNIT_FILE_USER,
2973 arg_action == ACTION_TEST ? MANAGER_TEST_FULL : 0,
2974 &m);
e96d6be7 2975 if (r < 0) {
da927ba9 2976 log_emergency_errno(r, "Failed to allocate manager object: %m");
cb6531be 2977 error_message = "Failed to allocate manager object";
60918275
LP		 2978 goto finish;
2979 }
2980
9f9f0342
LP		 2981 m->timestamps[MANAGER_TIMESTAMP_KERNEL] = kernel_timestamp;
2982 m->timestamps[MANAGER_TIMESTAMP_INITRD] = initrd_timestamp;
2983 m->timestamps[MANAGER_TIMESTAMP_USERSPACE] = userspace_timestamp;
d4ee7bd8
YW		 2984 m->timestamps[manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_SECURITY_START)] = security_start_timestamp;
2985 m->timestamps[manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_SECURITY_FINISH)] = security_finish_timestamp;
9e58ff9c 2986
85cb4151 2987 set_manager_defaults(m);
7b46fc6a 2988 set_manager_settings(m);
fd130612 2989 manager_set_first_boot(m, first_boot);
27d340c7 2990
bf4df7c3 2991 /* Remember whether we should queue the default job */
d3b1c508 2992 queue_default_job = !arg_serialization || arg_switched_root;
bf4df7c3 2993
9d76d730
LP		 2994 before_startup = now(CLOCK_MONOTONIC);
2995
2a7cf953 2996 r = manager_startup(m, arg_serialization, fds, /* root= */ NULL);
58f88d92 2997 if (r < 0) {
cefb3eda 2998 error_message = "Failed to start up manager";
58f88d92
ZJS		 2999 goto finish;
3000 }
a16e1123 3001
6acca5fc 3002 /* This will close all file descriptors that were opened, but not claimed by any unit. */
2feceb5e 3003 fds = fdset_free(fds);
74ca738f 3004 arg_serialization = safe_fclose(arg_serialization);
bf4df7c3
LP		 3005
3006 if (queue_default_job) {
6acca5fc 3007 r = do_queue_default_job(m, &error_message);
718db961 3008 if (r < 0)
37d88da7 3009 goto finish;
6acca5fc 3010 }
ab17a050 3011
6acca5fc 3012 after_startup = now(CLOCK_MONOTONIC);
60918275 3013
6acca5fc
LP		 3014 log_full(arg_action == ACTION_TEST ? LOG_INFO : LOG_DEBUG,
3015 "Loaded units and determined initial transaction in %s.",
5291f26d 3016 FORMAT_TIMESPAN(after_startup - before_startup, 100 * USEC_PER_MSEC));
07672f49 3017
6acca5fc 3018 if (arg_action == ACTION_TEST) {
2a341bb9 3019 manager_test_summary(m);
6acca5fc
LP		 3020 retval = EXIT_SUCCESS;
3021 goto finish;
e965d56d 3022 }
d46de8a1 3023
3046b6db 3024 (void) invoke_main_loop(m,
a9fd4cd1
FB		 3025 &saved_rlimit_nofile,
3026 &saved_rlimit_memlock,
3046b6db
LP		 3027 &reexecute,
3028 &retval,
3029 &shutdown_verb,
3030 &fds,
3031 &switch_root_dir,
3032 &switch_root_init,
3033 &error_message);
f170852a 3034
60918275 3035finish:
b87c2aa6
ZJS		 3036 pager_close();
3037
92890452 3038 if (m) {
986935cf
FB		 3039 arg_reboot_watchdog = manager_get_watchdog(m, WATCHDOG_REBOOT);
3040 arg_kexec_watchdog = manager_get_watchdog(m, WATCHDOG_KEXEC);
92890452
LP		 3041 m = manager_free(m);
3042 }
60918275 3043
cc56fafe 3044 mac_selinux_finish();
b2bb3dbe 3045
3c7878f9
LP		 3046 if (reexecute)
3047 do_reexecute(argc, argv,
3048 &saved_rlimit_nofile,
3049 &saved_rlimit_memlock,
3050 fds,
3051 switch_root_dir,
3052 switch_root_init,
3053 &error_message); /* This only returns if reexecution failed */
a16e1123 3054
74ca738f 3055 arg_serialization = safe_fclose(arg_serialization);
2feceb5e 3056 fds = fdset_free(fds);
a16e1123 3057
0e06a031
LP		 3058 saved_env = strv_free(saved_env);
3059
349cc4a5 3060#if HAVE_VALGRIND_VALGRIND_H
54b434b1
LP		 3061 /* If we are PID 1 and running under valgrind, then let's exit
3062 * here explicitly. valgrind will only generate nice output on
3063 * exit(), not on exec(), hence let's do the former not the
3064 * latter here. */
8a2c1fbf
EJ		 3065 if (getpid_cached() == 1 && RUNNING_ON_VALGRIND) {
3066 /* Cleanup watchdog_device strings for valgrind. We need them
3067 * in become_shutdown() so normally we cannot free them yet. */
3068 watchdog_free_device();
3069 arg_watchdog_device = mfree(arg_watchdog_device);
7d9eea2b 3070 reset_arguments();
27fe58b7 3071 return retval;
8a2c1fbf 3072 }
54b434b1
LP		 3073#endif
3074
7e11a95e
EV		 3075#if HAS_FEATURE_ADDRESS_SANITIZER
3076 __lsan_do_leak_check();
3077#endif
3078
b9080b03 3079 if (shutdown_verb) {
7eb35049 3080 r = become_shutdown(shutdown_verb, retval);
4a36297c 3081 log_error_errno(r, "Failed to execute shutdown binary, %s: %m", getpid_cached() == 1 ? "freezing" : "quitting");
9b9881d7 3082 error_message = "Failed to execute shutdown binary";
b9080b03
FF		 3083 }
3084
8a2c1fbf
EJ		 3085 watchdog_free_device();
3086 arg_watchdog_device = mfree(arg_watchdog_device);
3087
df0ff127 3088 if (getpid_cached() == 1) {
cb6531be
ZJS		 3089 if (error_message)
3090 manager_status_printf(NULL, STATUS_TYPE_EMERGENCY,
1fc464f6 3091 ANSI_HIGHLIGHT_RED "!!!!!!" ANSI_NORMAL,
bb259772
LP		 3092 "%s.", error_message);
3093 freeze_or_exit_or_reboot();
cb6531be 3094 }
c3b3c274 3095
7d9eea2b 3096 reset_arguments();
60918275
LP		 3097 return retval;
3098}
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