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main: move install_crash_handler() and mount_cgroup_controllers() invocations
[thirdparty/systemd.git] / src / core / main.c
CommitLineData
53e1b683 1/* SPDX-License-Identifier: LGPL-2.1+ */
a7334b09
LP		 2/***
3 This file is part of systemd.
4
5 Copyright 2010 Lennart Poettering
6
7 systemd is free software; you can redistribute it and/or modify it
5430f7f2
LP		 8 under the terms of the GNU Lesser General Public License as published by
9 the Free Software Foundation; either version 2.1 of the License, or
a7334b09
LP		 10 (at your option) any later version.
11
12 systemd is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
5430f7f2 15 Lesser General Public License for more details.
a7334b09 16
5430f7f2 17 You should have received a copy of the GNU Lesser General Public License
a7334b09
LP		 18 along with systemd; If not, see <http://www.gnu.org/licenses/>.
19***/
20
60918275 21#include <errno.h>
3dfc9763 22#include <fcntl.h>
f170852a 23#include <getopt.h>
97c4f35c 24#include <signal.h>
3dfc9763
LP		 25#include <stdio.h>
26#include <string.h>
664f88a7 27#include <sys/mount.h>
3dfc9763 28#include <sys/prctl.h>
b9e74c39 29#include <sys/reboot.h>
3dfc9763
LP		 30#include <sys/stat.h>
31#include <unistd.h>
349cc4a5 32#if HAVE_SECCOMP
b64a3d86
LP		 33#include <seccomp.h>
34#endif
349cc4a5 35#if HAVE_VALGRIND_VALGRIND_H
3dfc9763
LP		 36#include <valgrind/valgrind.h>
37#endif
54b434b1 38
718db961 39#include "sd-bus.h"
cf0fbc49 40#include "sd-daemon.h"
b2e7486c 41#include "sd-messages.h"
3dfc9763 42
b5efdb8a 43#include "alloc-util.h"
d9d93745 44#include "architecture.h"
3dfc9763
LP		 45#include "build.h"
46#include "bus-error.h"
47#include "bus-util.h"
430f0182 48#include "capability-util.h"
24efb112 49#include "clock-util.h"
3dfc9763 50#include "conf-parser.h"
618234a5 51#include "cpu-set-util.h"
3dfc9763
LP		 52#include "dbus-manager.h"
53#include "def.h"
eee8b7ab 54#include "emergency-action.h"
3dfc9763 55#include "env-util.h"
3ffd4af2 56#include "fd-util.h"
3dfc9763 57#include "fdset.h"
718db961 58#include "fileio.h"
f97b34a6 59#include "format-util.h"
f4f15635 60#include "fs-util.h"
3dfc9763
LP		 61#include "hostname-setup.h"
62#include "ima-setup.h"
63#include "killall.h"
64#include "kmod-setup.h"
d7b8eec7 65#include "load-fragment.h"
3dfc9763 66#include "log.h"
b6e66135 67#include "loopback-setup.h"
b6e66135 68#include "machine-id-setup.h"
3dfc9763
LP		 69#include "manager.h"
70#include "missing.h"
71#include "mount-setup.h"
72#include "pager.h"
6bedfcbb 73#include "parse-util.h"
7d5ceb64 74#include "path-util.h"
4e731273 75#include "proc-cmdline.h"
3dfc9763 76#include "process-util.h"
8869a0b4 77#include "raw-clone.h"
78f22b97 78#include "rlimit-util.h"
349cc4a5 79#if HAVE_SECCOMP
83f12b27
FS		 80#include "seccomp-util.h"
81#endif
b6e66135 82#include "selinux-setup.h"
3dfc9763
LP		 83#include "selinux-util.h"
84#include "signal-util.h"
ffbd2c4d 85#include "smack-setup.h"
3dfc9763 86#include "special.h"
8fcde012 87#include "stat-util.h"
15a5e950 88#include "stdio-util.h"
3dfc9763
LP		 89#include "strv.h"
90#include "switch-root.h"
91#include "terminal-util.h"
8612da97 92#include "umask-util.h"
b1d4f8e1 93#include "user-util.h"
3dfc9763
LP		 94#include "virt.h"
95#include "watchdog.h"
b6e66135 96
f170852a
LP		 97static enum {
98 ACTION_RUN,
e965d56d 99 ACTION_HELP,
9ba0bc4e 100 ACTION_VERSION,
e537352b 101 ACTION_TEST,
494294d6 102 ACTION_DUMP_CONFIGURATION_ITEMS
fa0f4d8a 103} arg_action = ACTION_RUN;
fa0f4d8a 104static char *arg_default_unit = NULL;
463d0d15 105static bool arg_system = false;
fa0f4d8a 106static bool arg_dump_core = true;
fa0f4d8a 107static int arg_crash_chvt = -1;
b9e74c39
LP		 108static bool arg_crash_shell = false;
109static bool arg_crash_reboot = false;
7d5ceb64 110static char *arg_confirm_spawn = NULL;
b6e2f329 111static ShowStatus arg_show_status = _SHOW_STATUS_UNSET;
bf4df7c3 112static bool arg_switched_root = false;
ea4b98e6 113static bool arg_no_pager = false;
0c85a4f3 114static char ***arg_join_controllers = NULL;
706343f4 115static ExecOutput arg_default_std_output = EXEC_OUTPUT_JOURNAL;
0a494f1f 116static ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT;
1f19a534
OS		 117static usec_t arg_default_restart_usec = DEFAULT_RESTART_USEC;
118static usec_t arg_default_timeout_start_usec = DEFAULT_TIMEOUT_USEC;
119static usec_t arg_default_timeout_stop_usec = DEFAULT_TIMEOUT_USEC;
3f41e1e5
LN		 120static usec_t arg_default_start_limit_interval = DEFAULT_START_LIMIT_INTERVAL;
121static unsigned arg_default_start_limit_burst = DEFAULT_START_LIMIT_BURST;
e96d6be7
LP		 122static usec_t arg_runtime_watchdog = 0;
123static usec_t arg_shutdown_watchdog = 10 * USEC_PER_MINUTE;
8a2c1fbf 124static char *arg_watchdog_device = NULL;
97d0e5f8 125static char **arg_default_environment = NULL;
517d56b1 126static struct rlimit *arg_default_rlimit[_RLIMIT_MAX] = {};
a103496c 127static uint64_t arg_capability_bounding_set = CAP_ALL;
3a43da28 128static nsec_t arg_timer_slack_nsec = NSEC_INFINITY;
bd8f585b 129static usec_t arg_default_timer_accuracy_usec = 1 * USEC_PER_MINUTE;
d3b1c508
LP		 130static Set* arg_syscall_archs = NULL;
131static FILE* arg_serialization = NULL;
085afe36 132static bool arg_default_cpu_accounting = false;
13c31542 133static bool arg_default_io_accounting = false;
377bfd2d 134static bool arg_default_ip_accounting = false;
085afe36
LP		 135static bool arg_default_blockio_accounting = false;
136static bool arg_default_memory_accounting = false;
9ded9cd1 137static bool arg_default_tasks_accounting = true;
79baeeb9 138static uint64_t arg_default_tasks_max = UINT64_MAX;
ee48dbd5 139static sd_id128_t arg_machine_id = {};
ae8c7939 140static EmergencyAction arg_cad_burst_action = EMERGENCY_ACTION_REBOOT_FORCE;
4fc935ca 141
b9e74c39
LP		 142noreturn static void freeze_or_reboot(void) {
143
144 if (arg_crash_reboot) {
145 log_notice("Rebooting in 10s...");
146 (void) sleep(10);
147
148 log_notice("Rebooting now...");
149 (void) reboot(RB_AUTOBOOT);
150 log_emergency_errno(errno, "Failed to reboot: %m");
151 }
152
153 log_emergency("Freezing execution.");
154 freeze();
155}
156
919ce0b7 157noreturn static void crash(int sig) {
7d06dad9
MS		 158 struct sigaction sa;
159 pid_t pid;
97c4f35c 160
df0ff127 161 if (getpid_cached() != 1)
abb26902 162 /* Pass this on immediately, if this is not PID 1 */
92ca4cac 163 (void) raise(sig);
abb26902 164 else if (!arg_dump_core)
4104970e 165 log_emergency("Caught <%s>, not dumping core.", signal_to_string(sig));
97c4f35c 166 else {
7d06dad9 167 sa = (struct sigaction) {
189d5bac 168 .sa_handler = nop_signal_handler,
b92bea5d
ZJS		 169 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
170 };
97c4f35c 171
6f5e3f35 172 /* We want to wait for the core process, hence let's enable SIGCHLD */
92ca4cac 173 (void) sigaction(SIGCHLD, &sa, NULL);
6f5e3f35 174
8869a0b4 175 pid = raw_clone(SIGCHLD);
e62d8c39 176 if (pid < 0)
56f64d95 177 log_emergency_errno(errno, "Caught <%s>, cannot fork for core dump: %m", signal_to_string(sig));
97c4f35c 178 else if (pid == 0) {
97c4f35c 179 /* Enable default signal handler for core dump */
15a90032 180
92ca4cac
LP		 181 sa = (struct sigaction) {
182 .sa_handler = SIG_DFL,
183 };
184 (void) sigaction(sig, &sa, NULL);
97c4f35c 185
15a90032
LP		 186 /* Don't limit the coredump size */
187 (void) setrlimit(RLIMIT_CORE, &RLIMIT_MAKE_CONST(RLIM_INFINITY));
97c4f35c
LP		 188
189 /* Just to be sure... */
e62d9b81 190 (void) chdir("/");
97c4f35c
LP		 191
192 /* Raise the signal again */
ee05e779 193 pid = raw_getpid();
92ca4cac 194 (void) kill(pid, sig); /* raise() would kill the parent */
97c4f35c
LP		 195
196 assert_not_reached("We shouldn't be here...");
92ca4cac 197 _exit(EXIT_FAILURE);
4fc935ca 198 } else {
8e12a6ae
LP		 199 siginfo_t status;
200 int r;
4fc935ca
LP		 201
202 /* Order things nicely. */
e62d8c39
ZJS		 203 r = wait_for_terminate(pid, &status);
204 if (r < 0)
da927ba9 205 log_emergency_errno(r, "Caught <%s>, waitpid() failed: %m", signal_to_string(sig));
8e12a6ae 206 else if (status.si_code != CLD_DUMPED)
ee05e779
ZJS		 207 log_emergency("Caught <%s>, core dump failed (child "PID_FMT", code=%s, status=%i/%s).",
208 signal_to_string(sig),
209 pid, sigchld_code_to_string(status.si_code),
210 status.si_status,
211 strna(status.si_code == CLD_EXITED
38107f5a 212 ? exit_status_to_string(status.si_status, EXIT_STATUS_MINIMAL)
ee05e779 213 : signal_to_string(status.si_status)));
4fc935ca 214 else
4104970e 215 log_emergency("Caught <%s>, dumped core as pid "PID_FMT".", signal_to_string(sig), pid);
97c4f35c
LP		 216 }
217 }
218
b9e74c39 219 if (arg_crash_chvt >= 0)
92ca4cac 220 (void) chvt(arg_crash_chvt);
601f6a1e 221
7d06dad9
MS		 222 sa = (struct sigaction) {
223 .sa_handler = SIG_IGN,
224 .sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART,
225 };
226
227 /* Let the kernel reap children for us */
228 (void) sigaction(SIGCHLD, &sa, NULL);
8c43883a 229
7d06dad9 230 if (arg_crash_shell) {
b9e74c39 231 log_notice("Executing crash shell in 10s...");
92ca4cac 232 (void) sleep(10);
4fc935ca 233
8869a0b4 234 pid = raw_clone(SIGCHLD);
cd3bd60a 235 if (pid < 0)
56f64d95 236 log_emergency_errno(errno, "Failed to fork off crash shell: %m");
6f5e3f35 237 else if (pid == 0) {
b9e74c39 238 (void) setsid();
92ca4cac
LP		 239 (void) make_console_stdio();
240 (void) execle("/bin/sh", "/bin/sh", NULL, environ);
6f5e3f35 241
ee05e779 242 log_emergency_errno(errno, "execle() failed: %m");
92ca4cac 243 _exit(EXIT_FAILURE);
b9e74c39
LP		 244 } else {
245 log_info("Spawned crash shell as PID "PID_FMT".", pid);
4cf0b03b 246 (void) wait_for_terminate(pid, NULL);
b9e74c39 247 }
4fc935ca
LP		 248 }
249
b9e74c39 250 freeze_or_reboot();
97c4f35c
LP		 251}
252
253static void install_crash_handler(void) {
297d563d 254 static const struct sigaction sa = {
b92bea5d 255 .sa_handler = crash,
297d563d 256 .sa_flags = SA_NODEFER, /* So that we can raise the signal again from the signal handler */
b92bea5d 257 };
297d563d 258 int r;
97c4f35c 259
297d563d
LP		 260 /* We ignore the return value here, since, we don't mind if we
261 * cannot set up a crash handler */
262 r = sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1);
263 if (r < 0)
264 log_debug_errno(r, "I had trouble setting up the crash handler, ignoring: %m");
97c4f35c 265}
f170852a 266
56d96fc0
LP		 267static int console_setup(void) {
268 _cleanup_close_ int tty_fd = -1;
269 int r;
80876c20 270
512947d4 271 tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);
23bbb0de
MS		 272 if (tty_fd < 0)
273 return log_error_errno(tty_fd, "Failed to open /dev/console: %m");
80876c20 274
56d96fc0
LP		 275 /* We don't want to force text mode. plymouth may be showing
276 * pictures already from initrd. */
512947d4 277 r = reset_terminal_fd(tty_fd, false);
23bbb0de
MS		 278 if (r < 0)
279 return log_error_errno(r, "Failed to reset /dev/console: %m");
843d2643 280
56d96fc0 281 return 0;
80876c20
LP		 282}
283
b9e74c39
LP		 284static int parse_crash_chvt(const char *value) {
285 int b;
286
287 if (safe_atoi(value, &arg_crash_chvt) >= 0)
288 return 0;
289
290 b = parse_boolean(value);
291 if (b < 0)
292 return b;
293
294 if (b > 0)
295 arg_crash_chvt = 0; /* switch to where kmsg goes */
296 else
297 arg_crash_chvt = -1; /* turn off switching */
298
299 return 0;
300}
301
7d5ceb64
FB		 302static int parse_confirm_spawn(const char *value, char **console) {
303 char *s;
304 int r;
305
306 r = value ? parse_boolean(value) : 1;
307 if (r == 0) {
308 *console = NULL;
309 return 0;
310 }
311
312 if (r > 0) /* on with default tty */
313 s = strdup("/dev/console");
314 else if (is_path(value)) /* on with fully qualified path */
315 s = strdup(value);
316 else /* on with only a tty file name, not a fully qualified path */
317 s = strjoin("/dev/", value);
318 if (!s)
319 return -ENOMEM;
320 *console = s;
321 return 0;
322}
323
ee48dbd5 324static int set_machine_id(const char *m) {
e042eab7 325 sd_id128_t t;
8b26cdbd 326 assert(m);
ee48dbd5 327
e042eab7 328 if (sd_id128_from_string(m, &t) < 0)
ee48dbd5
NC		 329 return -EINVAL;
330
e042eab7 331 if (sd_id128_is_null(t))
ee48dbd5
NC		 332 return -EINVAL;
333
e042eab7 334 arg_machine_id = t;
ee48dbd5
NC		 335 return 0;
336}
337
96287a49 338static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
f170852a 339
059cb385 340 int r;
f170852a 341
059cb385 342 assert(key);
5192bd19 343
1d84ad94 344 if (STR_IN_SET(key, "systemd.unit", "rd.systemd.unit")) {
bf4df7c3 345
1d84ad94
LP		 346 if (proc_cmdline_value_missing(key, value))
347 return 0;
bf4df7c3 348
1d84ad94
LP		 349 if (!unit_name_is_valid(value, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE))
350 log_warning("Unit name specified on %s= is not valid, ignoring: %s", key, value);
351 else if (in_initrd() == !!startswith(key, "rd.")) {
352 if (free_and_strdup(&arg_default_unit, value) < 0)
353 return log_oom();
354 }
f170852a 355
1d84ad94 356 } else if (proc_cmdline_key_streq(key, "systemd.dump_core")) {
4fc935ca 357
1d84ad94 358 r = value ? parse_boolean(value) : true;
fb472900 359 if (r < 0)
059cb385 360 log_warning("Failed to parse dump core switch %s. Ignoring.", value);
4fc935ca 361 else
fa0f4d8a 362 arg_dump_core = r;
4fc935ca 363
1d84ad94 364 } else if (proc_cmdline_key_streq(key, "systemd.crash_chvt")) {
b9e74c39 365
1d84ad94
LP		 366 if (!value)
367 arg_crash_chvt = 0; /* turn on */
368 else if (parse_crash_chvt(value) < 0)
b9e74c39
LP		 369 log_warning("Failed to parse crash chvt switch %s. Ignoring.", value);
370
1d84ad94 371 } else if (proc_cmdline_key_streq(key, "systemd.crash_shell")) {
4fc935ca 372
1d84ad94 373 r = value ? parse_boolean(value) : true;
fb472900 374 if (r < 0)
059cb385 375 log_warning("Failed to parse crash shell switch %s. Ignoring.", value);
4fc935ca 376 else
fa0f4d8a 377 arg_crash_shell = r;
5e7ee61c 378
1d84ad94 379 } else if (proc_cmdline_key_streq(key, "systemd.crash_reboot")) {
5e7ee61c 380
1d84ad94 381 r = value ? parse_boolean(value) : true;
b9e74c39
LP		 382 if (r < 0)
383 log_warning("Failed to parse crash reboot switch %s. Ignoring.", value);
5e7ee61c 384 else
b9e74c39 385 arg_crash_reboot = r;
5e7ee61c 386
1d84ad94
LP		 387 } else if (proc_cmdline_key_streq(key, "systemd.confirm_spawn")) {
388 char *s;
7d5ceb64 389
1d84ad94 390 r = parse_confirm_spawn(value, &s);
059cb385 391 if (r < 0)
7d5ceb64 392 log_warning_errno(r, "Failed to parse confirm_spawn switch %s. Ignoring.", value);
1d84ad94
LP		 393 else {
394 free(arg_confirm_spawn);
395 arg_confirm_spawn = s;
396 }
601f6a1e 397
1d84ad94 398 } else if (proc_cmdline_key_streq(key, "systemd.show_status")) {
9e58ff9c 399
1d84ad94
LP		 400 if (value) {
401 r = parse_show_status(value, &arg_show_status);
402 if (r < 0)
403 log_warning("Failed to parse show status switch %s. Ignoring.", value);
404 } else
405 arg_show_status = SHOW_STATUS_YES;
059cb385 406
1d84ad94
LP		 407 } else if (proc_cmdline_key_streq(key, "systemd.default_standard_output")) {
408
409 if (proc_cmdline_value_missing(key, value))
410 return 0;
0a494f1f 411
059cb385 412 r = exec_output_from_string(value);
fb472900 413 if (r < 0)
059cb385 414 log_warning("Failed to parse default standard output switch %s. Ignoring.", value);
0a494f1f
LP		 415 else
416 arg_default_std_output = r;
0a494f1f 417
1d84ad94
LP		 418 } else if (proc_cmdline_key_streq(key, "systemd.default_standard_error")) {
419
420 if (proc_cmdline_value_missing(key, value))
421 return 0;
059cb385
LP		 422
423 r = exec_output_from_string(value);
fb472900 424 if (r < 0)
059cb385 425 log_warning("Failed to parse default standard error switch %s. Ignoring.", value);
0a494f1f
LP		 426 else
427 arg_default_std_error = r;
9e7c5357 428
1d84ad94
LP		 429 } else if (streq(key, "systemd.setenv")) {
430
431 if (proc_cmdline_value_missing(key, value))
432 return 0;
059cb385
LP		 433
434 if (env_assignment_is_valid(value)) {
e21fea24
KS		 435 char **env;
436
059cb385 437 env = strv_env_set(arg_default_environment, value);
1d84ad94
LP		 438 if (!env)
439 return log_oom();
440
441 arg_default_environment = env;
e21fea24 442 } else
059cb385 443 log_warning("Environment variable name '%s' is not valid. Ignoring.", value);
9e58ff9c 444
1d84ad94
LP		 445 } else if (proc_cmdline_key_streq(key, "systemd.machine_id")) {
446
447 if (proc_cmdline_value_missing(key, value))
448 return 0;
449
450 r = set_machine_id(value);
451 if (r < 0)
452 log_warning("MachineID '%s' is not valid. Ignoring.", value);
ee48dbd5 453
1d84ad94
LP		 454 } else if (proc_cmdline_key_streq(key, "systemd.default_timeout_start_sec")) {
455
456 if (proc_cmdline_value_missing(key, value))
457 return 0;
458
459 r = parse_sec(value, &arg_default_timeout_start_usec);
460 if (r < 0)
461 log_warning_errno(r, "Failed to parse default start timeout: %s, ignoring.", value);
462
463 if (arg_default_timeout_start_usec <= 0)
464 arg_default_timeout_start_usec = USEC_INFINITY;
ee48dbd5 465
8a2c1fbf
EJ		 466 } else if (proc_cmdline_key_streq(key, "systemd.watchdog_device")) {
467
468 if (proc_cmdline_value_missing(key, value))
469 return 0;
470
471 parse_path_argument_and_warn(value, false, &arg_watchdog_device);
472
059cb385 473 } else if (streq(key, "quiet") && !value) {
d7b15e0a 474
b6e2f329 475 if (arg_show_status == _SHOW_STATUS_UNSET)
d450b6f2 476 arg_show_status = SHOW_STATUS_AUTO;
059cb385
LP		 477
478 } else if (streq(key, "debug") && !value) {
d7b15e0a 479
1de1c9c3
LP		 480 /* Note that log_parse_environment() handles 'debug'
481 * too, and sets the log level to LOG_DEBUG. */
d7b15e0a 482
75f86906 483 if (detect_container() > 0)
b2103dcc 484 log_set_target(LOG_TARGET_CONSOLE);
059cb385 485
dcd61450 486 } else if (!value) {
e2c9a131 487 const char *target;
f170852a
LP		 488
489 /* SysV compatibility */
e2c9a131
EV		 490 target = runlevel_to_target(key);
491 if (target)
492 return free_and_strdup(&arg_default_unit, target);
f170852a
LP		 493 }
494
495 return 0;
496}
497
e8e581bf
ZJS		 498#define DEFINE_SETTER(name, func, descr) \
499 static int name(const char *unit, \
500 const char *filename, \
501 unsigned line, \
502 const char *section, \
71a61510 503 unsigned section_line, \
e8e581bf
ZJS		 504 const char *lvalue, \
505 int ltype, \
506 const char *rvalue, \
507 void *data, \
508 void *userdata) { \
509 \
510 int r; \
511 \
512 assert(filename); \
513 assert(lvalue); \
514 assert(rvalue); \
515 \
516 r = func(rvalue); \
517 if (r < 0) \
d1cefe0a
LP		 518 log_syntax(unit, LOG_ERR, filename, line, r, \
519 "Invalid " descr "'%s': %m", \
520 rvalue); \
e8e581bf
ZJS		 521 \
522 return 0; \
523 }
487393e9 524
e8e581bf
ZJS		 525DEFINE_SETTER(config_parse_level2, log_set_max_level_from_string, "log level")
526DEFINE_SETTER(config_parse_target, log_set_target_from_string, "target")
527DEFINE_SETTER(config_parse_color, log_show_color_from_string, "color" )
528DEFINE_SETTER(config_parse_location, log_show_location_from_string, "location")
487393e9 529
4d7213b2
LP		 530static int config_parse_cpu_affinity2(
531 const char *unit,
532 const char *filename,
533 unsigned line,
534 const char *section,
535 unsigned section_line,
536 const char *lvalue,
537 int ltype,
538 const char *rvalue,
539 void *data,
540 void *userdata) {
487393e9 541
4b40bc38 542 _cleanup_cpu_free_ cpu_set_t *c = NULL;
f5c72b73 543 int ncpus;
487393e9 544
765d143b 545 ncpus = parse_cpu_set_and_warn(rvalue, &c, unit, filename, line, lvalue);
f5c72b73
FB		 546 if (ncpus < 0)
547 return ncpus;
487393e9 548
f5c72b73 549 if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0)
25f027c5 550 log_warning_errno(errno, "Failed to set CPU affinity: %m");
487393e9 551
487393e9
LP		 552 return 0;
553}
554
4d7213b2
LP		 555static int config_parse_show_status(
556 const char* unit,
557 const char *filename,
558 unsigned line,
559 const char *section,
560 unsigned section_line,
561 const char *lvalue,
562 int ltype,
563 const char *rvalue,
564 void *data,
565 void *userdata) {
566
567 int k;
568 ShowStatus *b = data;
569
570 assert(filename);
571 assert(lvalue);
572 assert(rvalue);
573 assert(data);
574
575 k = parse_show_status(rvalue, b);
576 if (k < 0) {
12ca818f 577 log_syntax(unit, LOG_ERR, filename, line, k, "Failed to parse show status setting, ignoring: %s", rvalue);
4d7213b2
LP		 578 return 0;
579 }
580
581 return 0;
582}
583
5db98187
LP		 584static int config_parse_output_restricted(
585 const char* unit,
586 const char *filename,
587 unsigned line,
588 const char *section,
589 unsigned section_line,
590 const char *lvalue,
591 int ltype,
592 const char *rvalue,
593 void *data,
594 void *userdata) {
595
596 ExecOutput t, *eo = data;
597
598 assert(filename);
599 assert(lvalue);
600 assert(rvalue);
601 assert(data);
602
603 t = exec_output_from_string(rvalue);
604 if (t < 0) {
605 log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse output type, ignoring: %s", rvalue);
606 return 0;
607 }
608
609 if (IN_SET(t, EXEC_OUTPUT_SOCKET, EXEC_OUTPUT_NAMED_FD, EXEC_OUTPUT_FILE)) {
610 log_syntax(unit, LOG_ERR, filename, line, 0, "Standard output types socket, fd:, file: are not supported as defaults, ignoring: %s", rvalue);
611 return 0;
612 }
613
614 *eo = t;
615 return 0;
616}
617
b9e74c39
LP		 618static int config_parse_crash_chvt(
619 const char* unit,
620 const char *filename,
621 unsigned line,
622 const char *section,
623 unsigned section_line,
624 const char *lvalue,
625 int ltype,
626 const char *rvalue,
627 void *data,
628 void *userdata) {
629
630 int r;
631
632 assert(filename);
633 assert(lvalue);
634 assert(rvalue);
b9e74c39
LP		 635
636 r = parse_crash_chvt(rvalue);
637 if (r < 0) {
638 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse CrashChangeVT= setting, ignoring: %s", rvalue);
639 return 0;
640 }
641
642 return 0;
643}
644
e8e581bf
ZJS		 645static int config_parse_join_controllers(const char *unit,
646 const char *filename,
647 unsigned line,
648 const char *section,
71a61510 649 unsigned section_line,
e8e581bf
ZJS		 650 const char *lvalue,
651 int ltype,
652 const char *rvalue,
653 void *data,
654 void *userdata) {
0c85a4f3 655
3875c85b 656 const char *whole_rvalue = rvalue;
0c85a4f3 657 unsigned n = 0;
0c85a4f3
LP		 658
659 assert(filename);
660 assert(lvalue);
661 assert(rvalue);
662
fe382237 663 arg_join_controllers = strv_free_free(arg_join_controllers);
0c85a4f3 664
d4ebeb4f
FB		 665 for (;;) {
666 _cleanup_free_ char *word = NULL;
667 char **l;
668 int r;
0c85a4f3 669
9a82ab95 670 r = extract_first_word(&rvalue, &word, NULL, EXTRACT_QUOTES);
3875c85b
FB		 671 if (r < 0) {
672 log_syntax(unit, LOG_ERR, filename, line, r, "Invalid value for %s: %s", lvalue, whole_rvalue);
d4ebeb4f 673 return r;
3875c85b 674 }
d4ebeb4f
FB		 675 if (r == 0)
676 break;
0c85a4f3 677
d4ebeb4f 678 l = strv_split(word, ",");
1592ec21 679 if (!l)
aa8aeac0 680 return log_oom();
0c85a4f3
LP		 681 strv_uniq(l);
682
683 if (strv_length(l) <= 1) {
684 strv_free(l);
685 continue;
686 }
687
688 if (!arg_join_controllers) {
689 arg_join_controllers = new(char**, 2);
690 if (!arg_join_controllers) {
691 strv_free(l);
14212119 692 return log_oom();
0c85a4f3
LP		 693 }
694
695 arg_join_controllers[0] = l;
696 arg_join_controllers[1] = NULL;
697
698 n = 1;
699 } else {
700 char ***a;
701 char ***t;
702
703 t = new0(char**, n+2);
704 if (!t) {
705 strv_free(l);
14212119 706 return log_oom();
0c85a4f3
LP		 707 }
708
709 n = 0;
710
711 for (a = arg_join_controllers; *a; a++) {
712
713 if (strv_overlap(*a, l)) {
e287086b 714 if (strv_extend_strv(&l, *a, false) < 0) {
0c85a4f3
LP		 715 strv_free(l);
716 strv_free_free(t);
14212119 717 return log_oom();
0c85a4f3
LP		 718 }
719
0c85a4f3
LP		 720 } else {
721 char **c;
722
723 c = strv_copy(*a);
724 if (!c) {
725 strv_free(l);
726 strv_free_free(t);
14212119 727 return log_oom();
0c85a4f3
LP		 728 }
729
730 t[n++] = c;
731 }
732 }
733
734 t[n++] = strv_uniq(l);
735
736 strv_free_free(arg_join_controllers);
737 arg_join_controllers = t;
738 }
739 }
d4ebeb4f 740 if (!isempty(rvalue))
12ca818f 741 log_syntax(unit, LOG_ERR, filename, line, 0, "Trailing garbage, ignoring.");
0c85a4f3
LP		 742
743 return 0;
744}
745
487393e9
LP		 746static int parse_config_file(void) {
747
f975e971 748 const ConfigTableItem items[] = {
d3b1c508
LP		 749 { "Manager", "LogLevel", config_parse_level2, 0, NULL },
750 { "Manager", "LogTarget", config_parse_target, 0, NULL },
751 { "Manager", "LogColor", config_parse_color, 0, NULL },
752 { "Manager", "LogLocation", config_parse_location, 0, NULL },
753 { "Manager", "DumpCore", config_parse_bool, 0, &arg_dump_core },
b9e74c39
LP		 754 { "Manager", "CrashChVT", /* legacy */ config_parse_crash_chvt, 0, NULL },
755 { "Manager", "CrashChangeVT", config_parse_crash_chvt, 0, NULL },
d3b1c508 756 { "Manager", "CrashShell", config_parse_bool, 0, &arg_crash_shell },
b9e74c39 757 { "Manager", "CrashReboot", config_parse_bool, 0, &arg_crash_reboot },
d3b1c508 758 { "Manager", "ShowStatus", config_parse_show_status, 0, &arg_show_status },
d3b1c508
LP		 759 { "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, NULL },
760 { "Manager", "JoinControllers", config_parse_join_controllers, 0, &arg_join_controllers },
761 { "Manager", "RuntimeWatchdogSec", config_parse_sec, 0, &arg_runtime_watchdog },
762 { "Manager", "ShutdownWatchdogSec", config_parse_sec, 0, &arg_shutdown_watchdog },
8a2c1fbf 763 { "Manager", "WatchdogDevice", config_parse_path, 0, &arg_watchdog_device },
a103496c 764 { "Manager", "CapabilityBoundingSet", config_parse_capability_set, 0, &arg_capability_bounding_set },
349cc4a5 765#if HAVE_SECCOMP
d3b1c508 766 { "Manager", "SystemCallArchitectures", config_parse_syscall_archs, 0, &arg_syscall_archs },
89fffa27 767#endif
d3b1c508 768 { "Manager", "TimerSlackNSec", config_parse_nsec, 0, &arg_timer_slack_nsec },
bd8f585b 769 { "Manager", "DefaultTimerAccuracySec", config_parse_sec, 0, &arg_default_timer_accuracy_usec },
5db98187
LP		 770 { "Manager", "DefaultStandardOutput", config_parse_output_restricted,0, &arg_default_std_output },
771 { "Manager", "DefaultStandardError", config_parse_output_restricted,0, &arg_default_std_error },
d3b1c508
LP		 772 { "Manager", "DefaultTimeoutStartSec", config_parse_sec, 0, &arg_default_timeout_start_usec },
773 { "Manager", "DefaultTimeoutStopSec", config_parse_sec, 0, &arg_default_timeout_stop_usec },
774 { "Manager", "DefaultRestartSec", config_parse_sec, 0, &arg_default_restart_usec },
f0367da7
LP		 775 { "Manager", "DefaultStartLimitInterval", config_parse_sec, 0, &arg_default_start_limit_interval }, /* obsolete alias */
776 { "Manager", "DefaultStartLimitIntervalSec",config_parse_sec, 0, &arg_default_start_limit_interval },
d3b1c508
LP		 777 { "Manager", "DefaultStartLimitBurst", config_parse_unsigned, 0, &arg_default_start_limit_burst },
778 { "Manager", "DefaultEnvironment", config_parse_environ, 0, &arg_default_environment },
d0a7c5f6
LP		 779 { "Manager", "DefaultLimitCPU", config_parse_limit, RLIMIT_CPU, arg_default_rlimit },
780 { "Manager", "DefaultLimitFSIZE", config_parse_limit, RLIMIT_FSIZE, arg_default_rlimit },
781 { "Manager", "DefaultLimitDATA", config_parse_limit, RLIMIT_DATA, arg_default_rlimit },
782 { "Manager", "DefaultLimitSTACK", config_parse_limit, RLIMIT_STACK, arg_default_rlimit },
783 { "Manager", "DefaultLimitCORE", config_parse_limit, RLIMIT_CORE, arg_default_rlimit },
784 { "Manager", "DefaultLimitRSS", config_parse_limit, RLIMIT_RSS, arg_default_rlimit },
785 { "Manager", "DefaultLimitNOFILE", config_parse_limit, RLIMIT_NOFILE, arg_default_rlimit },
786 { "Manager", "DefaultLimitAS", config_parse_limit, RLIMIT_AS, arg_default_rlimit },
787 { "Manager", "DefaultLimitNPROC", config_parse_limit, RLIMIT_NPROC, arg_default_rlimit },
788 { "Manager", "DefaultLimitMEMLOCK", config_parse_limit, RLIMIT_MEMLOCK, arg_default_rlimit },
789 { "Manager", "DefaultLimitLOCKS", config_parse_limit, RLIMIT_LOCKS, arg_default_rlimit },
790 { "Manager", "DefaultLimitSIGPENDING", config_parse_limit, RLIMIT_SIGPENDING, arg_default_rlimit },
791 { "Manager", "DefaultLimitMSGQUEUE", config_parse_limit, RLIMIT_MSGQUEUE, arg_default_rlimit },
792 { "Manager", "DefaultLimitNICE", config_parse_limit, RLIMIT_NICE, arg_default_rlimit },
793 { "Manager", "DefaultLimitRTPRIO", config_parse_limit, RLIMIT_RTPRIO, arg_default_rlimit },
794 { "Manager", "DefaultLimitRTTIME", config_parse_limit, RLIMIT_RTTIME, arg_default_rlimit },
085afe36 795 { "Manager", "DefaultCPUAccounting", config_parse_bool, 0, &arg_default_cpu_accounting },
13c31542 796 { "Manager", "DefaultIOAccounting", config_parse_bool, 0, &arg_default_io_accounting },
377bfd2d 797 { "Manager", "DefaultIPAccounting", config_parse_bool, 0, &arg_default_ip_accounting },
085afe36
LP		 798 { "Manager", "DefaultBlockIOAccounting", config_parse_bool, 0, &arg_default_blockio_accounting },
799 { "Manager", "DefaultMemoryAccounting", config_parse_bool, 0, &arg_default_memory_accounting },
03a7b521 800 { "Manager", "DefaultTasksAccounting", config_parse_bool, 0, &arg_default_tasks_accounting },
0af20ea2 801 { "Manager", "DefaultTasksMax", config_parse_tasks_max, 0, &arg_default_tasks_max },
ae8c7939 802 { "Manager", "CtrlAltDelBurstAction", config_parse_emergency_action, 0, &arg_cad_burst_action },
d3b1c508 803 {}
487393e9
LP		 804 };
805
1b907b5c 806 const char *fn, *conf_dirs_nulstr;
487393e9 807
463d0d15 808 fn = arg_system ?
75eb6154
LP		 809 PKGSYSCONFDIR "/system.conf" :
810 PKGSYSCONFDIR "/user.conf";
811
463d0d15 812 conf_dirs_nulstr = arg_system ?
75eb6154
LP		 813 CONF_PATHS_NULSTR("systemd/system.conf.d") :
814 CONF_PATHS_NULSTR("systemd/user.conf.d");
815
bcde742e 816 (void) config_parse_many_nulstr(fn, conf_dirs_nulstr, "Manager\0", config_item_table_lookup, items, CONFIG_PARSE_WARN, NULL);
36c16a7c
LP		 817
818 /* Traditionally "0" was used to turn off the default unit timeouts. Fix this up so that we used USEC_INFINITY
819 * like everywhere else. */
820 if (arg_default_timeout_start_usec <= 0)
821 arg_default_timeout_start_usec = USEC_INFINITY;
822 if (arg_default_timeout_stop_usec <= 0)
823 arg_default_timeout_stop_usec = USEC_INFINITY;
487393e9 824
487393e9
LP		 825 return 0;
826}
827
85cb4151 828static void set_manager_defaults(Manager *m) {
06af2a04
TB		 829
830 assert(m);
831
832 m->default_timer_accuracy_usec = arg_default_timer_accuracy_usec;
833 m->default_std_output = arg_default_std_output;
834 m->default_std_error = arg_default_std_error;
835 m->default_timeout_start_usec = arg_default_timeout_start_usec;
836 m->default_timeout_stop_usec = arg_default_timeout_stop_usec;
837 m->default_restart_usec = arg_default_restart_usec;
838 m->default_start_limit_interval = arg_default_start_limit_interval;
839 m->default_start_limit_burst = arg_default_start_limit_burst;
840 m->default_cpu_accounting = arg_default_cpu_accounting;
13c31542 841 m->default_io_accounting = arg_default_io_accounting;
377bfd2d 842 m->default_ip_accounting = arg_default_ip_accounting;
06af2a04
TB		 843 m->default_blockio_accounting = arg_default_blockio_accounting;
844 m->default_memory_accounting = arg_default_memory_accounting;
03a7b521 845 m->default_tasks_accounting = arg_default_tasks_accounting;
0af20ea2 846 m->default_tasks_max = arg_default_tasks_max;
06af2a04
TB		 847
848 manager_set_default_rlimits(m, arg_default_rlimit);
849 manager_environment_add(m, NULL, arg_default_environment);
850}
851
7b46fc6a
LP		 852static void set_manager_settings(Manager *m) {
853
854 assert(m);
855
856 m->confirm_spawn = arg_confirm_spawn;
857 m->runtime_watchdog = arg_runtime_watchdog;
858 m->shutdown_watchdog = arg_shutdown_watchdog;
859 m->cad_burst_action = arg_cad_burst_action;
860
861 manager_set_show_status(m, arg_show_status);
862}
863
f170852a
LP		 864static int parse_argv(int argc, char *argv[]) {
865
866 enum {
867 ARG_LOG_LEVEL = 0x100,
868 ARG_LOG_TARGET,
bbe63281
LP		 869 ARG_LOG_COLOR,
870 ARG_LOG_LOCATION,
2f198e2f 871 ARG_UNIT,
edb9aaa8 872 ARG_SYSTEM,
af2d49f7 873 ARG_USER,
e537352b 874 ARG_TEST,
b87c2aa6 875 ARG_NO_PAGER,
9ba0bc4e 876 ARG_VERSION,
80876c20 877 ARG_DUMP_CONFIGURATION_ITEMS,
9e58ff9c 878 ARG_DUMP_CORE,
b9e74c39 879 ARG_CRASH_CHVT,
9e58ff9c 880 ARG_CRASH_SHELL,
b9e74c39 881 ARG_CRASH_REBOOT,
a16e1123 882 ARG_CONFIRM_SPAWN,
9e58ff9c 883 ARG_SHOW_STATUS,
4288f619 884 ARG_DESERIALIZE,
2660882b 885 ARG_SWITCHED_ROOT,
0a494f1f 886 ARG_DEFAULT_STD_OUTPUT,
ee48dbd5
NC		 887 ARG_DEFAULT_STD_ERROR,
888 ARG_MACHINE_ID
f170852a
LP		 889 };
890
891 static const struct option options[] = {
a16e1123
LP		 892 { "log-level", required_argument, NULL, ARG_LOG_LEVEL },
893 { "log-target", required_argument, NULL, ARG_LOG_TARGET },
bbe63281
LP		 894 { "log-color", optional_argument, NULL, ARG_LOG_COLOR },
895 { "log-location", optional_argument, NULL, ARG_LOG_LOCATION },
2f198e2f 896 { "unit", required_argument, NULL, ARG_UNIT },
edb9aaa8 897 { "system", no_argument, NULL, ARG_SYSTEM },
af2d49f7 898 { "user", no_argument, NULL, ARG_USER },
a16e1123 899 { "test", no_argument, NULL, ARG_TEST },
b87c2aa6 900 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
a16e1123 901 { "help", no_argument, NULL, 'h' },
9ba0bc4e 902 { "version", no_argument, NULL, ARG_VERSION },
a16e1123 903 { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
a5d87bf0 904 { "dump-core", optional_argument, NULL, ARG_DUMP_CORE },
b9e74c39 905 { "crash-chvt", required_argument, NULL, ARG_CRASH_CHVT },
a5d87bf0 906 { "crash-shell", optional_argument, NULL, ARG_CRASH_SHELL },
b9e74c39 907 { "crash-reboot", optional_argument, NULL, ARG_CRASH_REBOOT },
a5d87bf0 908 { "confirm-spawn", optional_argument, NULL, ARG_CONFIRM_SPAWN },
6e98720f 909 { "show-status", optional_argument, NULL, ARG_SHOW_STATUS },
a16e1123 910 { "deserialize", required_argument, NULL, ARG_DESERIALIZE },
2660882b 911 { "switched-root", no_argument, NULL, ARG_SWITCHED_ROOT },
0a494f1f
LP		 912 { "default-standard-output", required_argument, NULL, ARG_DEFAULT_STD_OUTPUT, },
913 { "default-standard-error", required_argument, NULL, ARG_DEFAULT_STD_ERROR, },
ee48dbd5 914 { "machine-id", required_argument, NULL, ARG_MACHINE_ID },
fb472900 915 {}
f170852a
LP		 916 };
917
918 int c, r;
919
920 assert(argc >= 1);
921 assert(argv);
922
df0ff127 923 if (getpid_cached() == 1)
b770165a
LP		 924 opterr = 0;
925
099663ff 926 while ((c = getopt_long(argc, argv, "hDbsz:", options, NULL)) >= 0)
f170852a
LP		 927
928 switch (c) {
929
930 case ARG_LOG_LEVEL:
fb472900
ZJS		 931 r = log_set_max_level_from_string(optarg);
932 if (r < 0) {
f170852a
LP		 933 log_error("Failed to parse log level %s.", optarg);
934 return r;
935 }
936
937 break;
938
939 case ARG_LOG_TARGET:
fb472900
ZJS		 940 r = log_set_target_from_string(optarg);
941 if (r < 0) {
f170852a
LP		 942 log_error("Failed to parse log target %s.", optarg);
943 return r;
944 }
945
946 break;
947
bbe63281
LP		 948 case ARG_LOG_COLOR:
949
d0b170c8 950 if (optarg) {
fb472900
ZJS		 951 r = log_show_color_from_string(optarg);
952 if (r < 0) {
d0b170c8
LP		 953 log_error("Failed to parse log color setting %s.", optarg);
954 return r;
955 }
956 } else
957 log_show_color(true);
bbe63281
LP		 958
959 break;
960
961 case ARG_LOG_LOCATION:
d0b170c8 962 if (optarg) {
fb472900
ZJS		 963 r = log_show_location_from_string(optarg);
964 if (r < 0) {
d0b170c8
LP		 965 log_error("Failed to parse log location setting %s.", optarg);
966 return r;
967 }
968 } else
969 log_show_location(true);
bbe63281
LP		 970
971 break;
972
0a494f1f 973 case ARG_DEFAULT_STD_OUTPUT:
fb472900
ZJS		 974 r = exec_output_from_string(optarg);
975 if (r < 0) {
0a494f1f
LP		 976 log_error("Failed to parse default standard output setting %s.", optarg);
977 return r;
978 } else
979 arg_default_std_output = r;
980 break;
981
982 case ARG_DEFAULT_STD_ERROR:
fb472900
ZJS		 983 r = exec_output_from_string(optarg);
984 if (r < 0) {
0a494f1f
LP		 985 log_error("Failed to parse default standard error output setting %s.", optarg);
986 return r;
987 } else
988 arg_default_std_error = r;
989 break;
990
2f198e2f 991 case ARG_UNIT:
e6e242ad 992 r = free_and_strdup(&arg_default_unit, optarg);
23bbb0de
MS		 993 if (r < 0)
994 return log_error_errno(r, "Failed to set default unit %s: %m", optarg);
f170852a
LP		 995
996 break;
997
edb9aaa8 998 case ARG_SYSTEM:
463d0d15 999 arg_system = true;
edb9aaa8 1000 break;
a5dab5ce 1001
af2d49f7 1002 case ARG_USER:
463d0d15 1003 arg_system = false;
a5dab5ce 1004 break;
a5dab5ce 1005
e965d56d 1006 case ARG_TEST:
fa0f4d8a 1007 arg_action = ACTION_TEST;
b87c2aa6
ZJS		 1008 break;
1009
1010 case ARG_NO_PAGER:
1011 arg_no_pager = true;
e965d56d
LP		 1012 break;
1013
9ba0bc4e
ZJS		 1014 case ARG_VERSION:
1015 arg_action = ACTION_VERSION;
1016 break;
1017
e537352b 1018 case ARG_DUMP_CONFIGURATION_ITEMS:
fa0f4d8a 1019 arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
e537352b
LP		 1020 break;
1021
9e58ff9c 1022 case ARG_DUMP_CORE:
b9e74c39
LP		 1023 if (!optarg)
1024 arg_dump_core = true;
1025 else {
1026 r = parse_boolean(optarg);
1027 if (r < 0)
1028 return log_error_errno(r, "Failed to parse dump core boolean: %s", optarg);
1029 arg_dump_core = r;
a5d87bf0 1030 }
b9e74c39
LP		 1031 break;
1032
1033 case ARG_CRASH_CHVT:
1034 r = parse_crash_chvt(optarg);
1035 if (r < 0)
1036 return log_error_errno(r, "Failed to parse crash virtual terminal index: %s", optarg);
9e58ff9c
LP		 1037 break;
1038
1039 case ARG_CRASH_SHELL:
b9e74c39
LP		 1040 if (!optarg)
1041 arg_crash_shell = true;
1042 else {
1043 r = parse_boolean(optarg);
1044 if (r < 0)
1045 return log_error_errno(r, "Failed to parse crash shell boolean: %s", optarg);
1046 arg_crash_shell = r;
1047 }
1048 break;
1049
1050 case ARG_CRASH_REBOOT:
1051 if (!optarg)
1052 arg_crash_reboot = true;
1053 else {
1054 r = parse_boolean(optarg);
1055 if (r < 0)
1056 return log_error_errno(r, "Failed to parse crash shell boolean: %s", optarg);
1057 arg_crash_reboot = r;
a5d87bf0 1058 }
9e58ff9c
LP		 1059 break;
1060
80876c20 1061 case ARG_CONFIRM_SPAWN:
7d5ceb64
FB		 1062 arg_confirm_spawn = mfree(arg_confirm_spawn);
1063
1064 r = parse_confirm_spawn(optarg, &arg_confirm_spawn);
1065 if (r < 0)
1066 return log_error_errno(r, "Failed to parse confirm spawn option: %m");
80876c20
LP		 1067 break;
1068
9e58ff9c 1069 case ARG_SHOW_STATUS:
d450b6f2
ZJS		 1070 if (optarg) {
1071 r = parse_show_status(optarg, &arg_show_status);
1072 if (r < 0) {
1073 log_error("Failed to parse show status boolean %s.", optarg);
1074 return r;
1075 }
1076 } else
1077 arg_show_status = SHOW_STATUS_YES;
6e98720f 1078 break;
a5d87bf0 1079
a16e1123
LP		 1080 case ARG_DESERIALIZE: {
1081 int fd;
1082 FILE *f;
1083
01e10de3
LP		 1084 r = safe_atoi(optarg, &fd);
1085 if (r < 0 || fd < 0) {
a16e1123 1086 log_error("Failed to parse deserialize option %s.", optarg);
b9e74c39 1087 return -EINVAL;
a16e1123
LP		 1088 }
1089
b9e74c39 1090 (void) fd_cloexec(fd, true);
01e10de3
LP		 1091
1092 f = fdopen(fd, "r");
4a62c710
MS		 1093 if (!f)
1094 return log_error_errno(errno, "Failed to open serialization fd: %m");
a16e1123 1095
74ca738f 1096 safe_fclose(arg_serialization);
d3b1c508 1097 arg_serialization = f;
a16e1123
LP		 1098
1099 break;
1100 }
1101
2660882b 1102 case ARG_SWITCHED_ROOT:
bf4df7c3 1103 arg_switched_root = true;
d03bc1b8
HH		 1104 break;
1105
ee48dbd5
NC		 1106 case ARG_MACHINE_ID:
1107 r = set_machine_id(optarg);
54500613
LP		 1108 if (r < 0)
1109 return log_error_errno(r, "MachineID '%s' is not valid.", optarg);
ee48dbd5
NC		 1110 break;
1111
f170852a 1112 case 'h':
fa0f4d8a 1113 arg_action = ACTION_HELP;
f170852a
LP		 1114 break;
1115
1d2e23ab
LP		 1116 case 'D':
1117 log_set_max_level(LOG_DEBUG);
1118 break;
1119
099663ff
LP		 1120 case 'b':
1121 case 's':
1122 case 'z':
1123 /* Just to eat away the sysvinit kernel
1124 * cmdline args without getopt() error
1125 * messages that we'll parse in
1126 * parse_proc_cmdline_word() or ignore. */
f170852a 1127
099663ff 1128 case '?':
df0ff127 1129 if (getpid_cached() != 1)
099663ff 1130 return -EINVAL;
601185b4
ZJS		 1131 else
1132 return 0;
099663ff 1133
601185b4
ZJS		 1134 default:
1135 assert_not_reached("Unhandled option code.");
f170852a
LP		 1136 }
1137
df0ff127 1138 if (optind < argc && getpid_cached() != 1) {
d821e6d6
LP		 1139 /* Hmm, when we aren't run as init system
1140 * let's complain about excess arguments */
1141
1142 log_error("Excess arguments.");
1143 return -EINVAL;
1144 }
1145
f170852a
LP		 1146 return 0;
1147}
1148
1149static int help(void) {
1150
2e33c433 1151 printf("%s [OPTIONS...]\n\n"
af2d49f7 1152 "Starts up and maintains the system or user services.\n\n"
e537352b 1153 " -h --help Show this help\n"
cb4069d9 1154 " --version Show version\n"
e537352b 1155 " --test Determine startup sequence, dump it and exit\n"
b87c2aa6 1156 " --no-pager Do not pipe output into a pager\n"
80876c20 1157 " --dump-configuration-items Dump understood unit configuration items\n"
9e58ff9c 1158 " --unit=UNIT Set default unit\n"
edb9aaa8 1159 " --system Run a system instance, even if PID != 1\n"
af2d49f7 1160 " --user Run a user instance\n"
b9e74c39
LP		 1161 " --dump-core[=BOOL] Dump core on crash\n"
1162 " --crash-vt=NR Change to specified VT on crash\n"
1163 " --crash-reboot[=BOOL] Reboot on crash\n"
1164 " --crash-shell[=BOOL] Run shell on crash\n"
1165 " --confirm-spawn[=BOOL] Ask for confirmation when spawning processes\n"
1166 " --show-status[=BOOL] Show status updates on the console during bootup\n"
c1dc6153 1167 " --log-target=TARGET Set log target (console, journal, kmsg, journal-or-kmsg, null)\n"
9e58ff9c 1168 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
b9e74c39
LP		 1169 " --log-color[=BOOL] Highlight important log messages\n"
1170 " --log-location[=BOOL] Include code location in log messages\n"
0a494f1f
LP		 1171 " --default-standard-output= Set default standard output for services\n"
1172 " --default-standard-error= Set default standard error output for services\n",
5b6319dc 1173 program_invocation_short_name);
f170852a
LP		 1174
1175 return 0;
1176}
1177
b3680f49 1178static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds, bool switching_root) {
48b90859
LP		 1179 _cleanup_fdset_free_ FDSet *fds = NULL;
1180 _cleanup_fclose_ FILE *f = NULL;
a16e1123
LP		 1181 int r;
1182
1183 assert(m);
1184 assert(_f);
1185 assert(_fds);
1186
6b78f9b4 1187 r = manager_open_serialization(m, &f);
48b90859
LP		 1188 if (r < 0)
1189 return log_error_errno(r, "Failed to create serialization file: %m");
a16e1123 1190
71445ae7 1191 /* Make sure nothing is really destructed when we shut down */
313cefa1 1192 m->n_reloading++;
718db961 1193 bus_manager_send_reloading(m, true);
71445ae7 1194
6b78f9b4 1195 fds = fdset_new();
48b90859
LP		 1196 if (!fds)
1197 return log_oom();
a16e1123 1198
b3680f49 1199 r = manager_serialize(m, f, fds, switching_root);
48b90859
LP		 1200 if (r < 0)
1201 return log_error_errno(r, "Failed to serialize state: %m");
a16e1123 1202
48b90859
LP		 1203 if (fseeko(f, 0, SEEK_SET) == (off_t) -1)
1204 return log_error_errno(errno, "Failed to rewind serialization fd: %m");
a16e1123 1205
6b78f9b4 1206 r = fd_cloexec(fileno(f), false);
48b90859
LP		 1207 if (r < 0)
1208 return log_error_errno(r, "Failed to disable O_CLOEXEC for serialization: %m");
a16e1123 1209
6b78f9b4 1210 r = fdset_cloexec(fds, false);
48b90859
LP		 1211 if (r < 0)
1212 return log_error_errno(r, "Failed to disable O_CLOEXEC for serialization fds: %m");
a16e1123
LP		 1213
1214 *_f = f;
1215 *_fds = fds;
1216
48b90859
LP		 1217 f = NULL;
1218 fds = NULL;
a16e1123 1219
48b90859 1220 return 0;
a16e1123
LP		 1221}
1222
4096d6f5
LP		 1223static int bump_rlimit_nofile(struct rlimit *saved_rlimit) {
1224 struct rlimit nl;
1225 int r;
6385cb31
CB		 1226 int min_max;
1227 _cleanup_free_ char *nr_open = NULL;
4096d6f5
LP		 1228
1229 assert(saved_rlimit);
1230
1231 /* Save the original RLIMIT_NOFILE so that we can reset it
1232 * later when transitioning from the initrd to the main
1233 * systemd or suchlike. */
4a62c710 1234 if (getrlimit(RLIMIT_NOFILE, saved_rlimit) < 0)
3ce40911 1235 return log_warning_errno(errno, "Reading RLIMIT_NOFILE failed, ignoring: %m");
4096d6f5
LP		 1236
1237 /* Make sure forked processes get the default kernel setting */
1238 if (!arg_default_rlimit[RLIMIT_NOFILE]) {
1239 struct rlimit *rl;
1240
1241 rl = newdup(struct rlimit, saved_rlimit, 1);
1242 if (!rl)
1243 return log_oom();
1244
1245 arg_default_rlimit[RLIMIT_NOFILE] = rl;
1246 }
1247
6385cb31
CB		 1248 /* Get current RLIMIT_NOFILE maximum compiled into the kernel. */
1249 r = read_one_line_file("/proc/sys/fs/nr_open", &nr_open);
d387cfdd 1250 if (r >= 0)
6385cb31
CB		 1251 r = safe_atoi(nr_open, &min_max);
1252 /* If we fail, fallback to the hard-coded kernel limit of 1024 * 1024. */
1253 if (r < 0)
1254 min_max = 1024 * 1024;
1255
4096d6f5 1256 /* Bump up the resource limit for ourselves substantially */
6385cb31 1257 nl.rlim_cur = nl.rlim_max = min_max;
4096d6f5 1258 r = setrlimit_closest(RLIMIT_NOFILE, &nl);
23bbb0de 1259 if (r < 0)
3ce40911 1260 return log_warning_errno(r, "Setting RLIMIT_NOFILE failed, ignoring: %m");
4096d6f5
LP		 1261
1262 return 0;
1263}
1264
fb3ae275
LP		 1265static int bump_rlimit_memlock(struct rlimit *saved_rlimit) {
1266 int r;
1267
1268 assert(saved_rlimit);
1269 assert(getuid() == 0);
1270
1271 /* BPF_MAP_TYPE_LPM_TRIE bpf maps are charged against RLIMIT_MEMLOCK, even though we have CAP_IPC_LOCK which
1272 * should normally disable such checks. We need them to implement IPAccessAllow= and IPAccessDeny=, hence let's
1273 * bump the value high enough for the root user. */
1274
1275 if (getrlimit(RLIMIT_MEMLOCK, saved_rlimit) < 0)
1276 return log_warning_errno(errno, "Reading RLIMIT_MEMLOCK failed, ignoring: %m");
1277
1278 r = setrlimit_closest(RLIMIT_MEMLOCK, &RLIMIT_MAKE_CONST(1024ULL*1024ULL*16ULL));
1279 if (r < 0)
1280 return log_warning_errno(r, "Setting RLIMIT_MEMLOCK failed, ignoring: %m");
1281
1282 return 0;
1283}
1284
80758717 1285static void test_usr(void) {
80758717 1286
ed1c99fc 1287 /* Check that /usr is not a separate fs */
80758717 1288
871c44a7
LP		 1289 if (dir_is_empty("/usr") <= 0)
1290 return;
1291
8b173b5e 1292 log_warning("/usr appears to be on its own filesystem and is not already mounted. This is not a supported setup. "
871c44a7
LP		 1293 "Some things will probably break (sometimes even silently) in mysterious ways. "
1294 "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
1295}
1296
a07fdfa3
LP		 1297static int initialize_join_controllers(void) {
1298 /* By default, mount "cpu" + "cpuacct" together, and "net_cls"
1299 * + "net_prio". We'd like to add "cpuset" to the mix, but
f131770b 1300 * "cpuset" doesn't really work for groups with no initialized
a07fdfa3
LP		 1301 * attributes. */
1302
1303 arg_join_controllers = new(char**, 3);
1304 if (!arg_join_controllers)
1305 return -ENOMEM;
1306
1307 arg_join_controllers[0] = strv_new("cpu", "cpuacct", NULL);
fe382237
LP		 1308 if (!arg_join_controllers[0])
1309 goto oom;
a6b26d90 1310
fe382237
LP		 1311 arg_join_controllers[1] = strv_new("net_cls", "net_prio", NULL);
1312 if (!arg_join_controllers[1])
1313 goto oom;
a07fdfa3 1314
fe382237 1315 arg_join_controllers[2] = NULL;
a07fdfa3 1316 return 0;
fe382237
LP		 1317
1318oom:
1319 arg_join_controllers = strv_free_free(arg_join_controllers);
1320 return -ENOMEM;
a07fdfa3
LP		 1321}
1322
d3b1c508 1323static int enforce_syscall_archs(Set *archs) {
349cc4a5 1324#if HAVE_SECCOMP
d3b1c508
LP		 1325 int r;
1326
83f12b27
FS		 1327 if (!is_seccomp_available())
1328 return 0;
1329
469830d1 1330 r = seccomp_restrict_archs(arg_syscall_archs);
d3b1c508 1331 if (r < 0)
469830d1 1332 return log_error_errno(r, "Failed to enforce system call architecture restrication: %m");
d3b1c508 1333#endif
469830d1 1334 return 0;
d3b1c508
LP		 1335}
1336
b6e2f329
LP		 1337static int status_welcome(void) {
1338 _cleanup_free_ char *pretty_name = NULL, *ansi_color = NULL;
72c7329b 1339 const char *fn;
b6e2f329
LP		 1340 int r;
1341
fd8c85c6
LP		 1342 if (arg_show_status <= 0)
1343 return 0;
1344
72c7329b
LP		 1345 FOREACH_STRING(fn, "/etc/os-release", "/usr/lib/os-release") {
1346 r = parse_env_file(fn, NEWLINE,
5ae4d543
LP		 1347 "PRETTY_NAME", &pretty_name,
1348 "ANSI_COLOR", &ansi_color,
1349 NULL);
b6e2f329 1350
72c7329b
LP		 1351 if (r != -ENOENT)
1352 break;
1353 }
b6e2f329 1354 if (r < 0 && r != -ENOENT)
72c7329b 1355 log_warning_errno(r, "Failed to read os-release file, ignoring: %m");
b6e2f329 1356
dc9b5816
ZJS		 1357 if (log_get_show_color())
1358 return status_printf(NULL, false, false,
1359 "\nWelcome to \x1B[%sm%s\x1B[0m!\n",
1360 isempty(ansi_color) ? "1" : ansi_color,
1361 isempty(pretty_name) ? "Linux" : pretty_name);
1362 else
1363 return status_printf(NULL, false, false,
1364 "\nWelcome to %s!\n",
1365 isempty(pretty_name) ? "Linux" : pretty_name);
b6e2f329
LP		 1366}
1367
fdd25311
LP		 1368static int write_container_id(void) {
1369 const char *c;
19854865 1370 int r;
fdd25311
LP		 1371
1372 c = getenv("container");
1373 if (isempty(c))
1374 return 0;
1375
8612da97
LP		 1376 RUN_WITH_UMASK(0022)
1377 r = write_string_file("/run/systemd/container", c, WRITE_STRING_FILE_CREATE);
19854865 1378 if (r < 0)
f1f849b0 1379 return log_warning_errno(r, "Failed to write /run/systemd/container, ignoring: %m");
19854865
LP		 1380
1381 return 1;
1382}
1383
1384static int bump_unix_max_dgram_qlen(void) {
1385 _cleanup_free_ char *qlen = NULL;
1386 unsigned long v;
1387 int r;
1388
1389 /* Let's bump the net.unix.max_dgram_qlen sysctl. The kernel
1390 * default of 16 is simply too low. We set the value really
1391 * really early during boot, so that it is actually applied to
1392 * all our sockets, including the $NOTIFY_SOCKET one. */
1393
1394 r = read_one_line_file("/proc/sys/net/unix/max_dgram_qlen", &qlen);
1395 if (r < 0)
1396 return log_warning_errno(r, "Failed to read AF_UNIX datagram queue length, ignoring: %m");
1397
1398 r = safe_atolu(qlen, &v);
1399 if (r < 0)
1400 return log_warning_errno(r, "Failed to parse AF_UNIX datagram queue length, ignoring: %m");
1401
1402 if (v >= DEFAULT_UNIX_MAX_DGRAM_QLEN)
1403 return 0;
1404
1405 qlen = mfree(qlen);
1406 if (asprintf(&qlen, "%lu\n", DEFAULT_UNIX_MAX_DGRAM_QLEN) < 0)
1407 return log_oom();
1408
1409 r = write_string_file("/proc/sys/net/unix/max_dgram_qlen", qlen, 0);
1410 if (r < 0)
1411 return log_full_errno(IN_SET(r, -EROFS, -EPERM, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
1412 "Failed to bump AF_UNIX datagram queue length, ignoring: %m");
1413
1414 return 1;
fdd25311
LP		 1415}
1416
32391275
FB		 1417static int fixup_environment(void) {
1418 _cleanup_free_ char *term = NULL;
4dc63c4b 1419 const char *t;
32391275
FB		 1420 int r;
1421
84af7821
LP		 1422 /* We expect the environment to be set correctly
1423 * if run inside a container. */
1424 if (detect_container() > 0)
1425 return 0;
1426
32391275
FB		 1427 /* When started as PID1, the kernel uses /dev/console
1428 * for our stdios and uses TERM=linux whatever the
1429 * backend device used by the console. We try to make
1430 * a better guess here since some consoles might not
1431 * have support for color mode for example.
1432 *
1433 * However if TERM was configured through the kernel
1434 * command line then leave it alone. */
1435
1d84ad94 1436 r = proc_cmdline_get_key("TERM", 0, &term);
32391275
FB		 1437 if (r < 0)
1438 return r;
32391275 1439
4dc63c4b
LP		 1440 t = term ?: default_term_for_tty("/dev/console");
1441
1442 if (setenv("TERM", t, 1) < 0)
32391275
FB		 1443 return -errno;
1444
1445 return 0;
1446}
1447
6808a0bc
LP		 1448static void redirect_telinit(int argc, char *argv[]) {
1449
1450 /* This is compatibility support for SysV, where calling init as a user is identical to telinit. */
1451
1452#if HAVE_SYSV_COMPAT
1453 if (getpid_cached() == 1)
1454 return;
1455
1456 if (!strstr(program_invocation_short_name, "init"))
1457 return;
1458
1459 execv(SYSTEMCTL_BINARY_PATH, argv);
1460 log_error_errno(errno, "Failed to exec " SYSTEMCTL_BINARY_PATH ": %m");
1461 exit(1);
1462#endif
1463}
1464
4a36297c
LP		 1465static int become_shutdown(
1466 const char *shutdown_verb,
7eb35049 1467 int retval) {
4a36297c
LP		 1468
1469 char log_level[DECIMAL_STR_MAX(int) + 1],
1470 exit_code[DECIMAL_STR_MAX(uint8_t) + 1];
1471
1472 const char* command_line[11] = {
1473 SYSTEMD_SHUTDOWN_BINARY_PATH,
1474 shutdown_verb,
1475 "--log-level", log_level,
1476 "--log-target",
1477 };
1478
1479 _cleanup_strv_free_ char **env_block = NULL;
1480 size_t pos = 5;
1481 int r;
1482
7eb35049 1483 assert(shutdown_verb);
234519ae 1484 assert(!command_line[pos]);
4a36297c
LP		 1485 env_block = strv_copy(environ);
1486
1487 xsprintf(log_level, "%d", log_get_max_level());
1488
1489 switch (log_get_target()) {
1490
1491 case LOG_TARGET_KMSG:
1492 case LOG_TARGET_JOURNAL_OR_KMSG:
1493 case LOG_TARGET_SYSLOG_OR_KMSG:
1494 command_line[pos++] = "kmsg";
1495 break;
1496
1497 case LOG_TARGET_NULL:
1498 command_line[pos++] = "null";
1499 break;
1500
1501 case LOG_TARGET_CONSOLE:
1502 default:
1503 command_line[pos++] = "console";
1504 break;
1505 };
1506
1507 if (log_get_show_color())
1508 command_line[pos++] = "--log-color";
1509
1510 if (log_get_show_location())
1511 command_line[pos++] = "--log-location";
1512
1513 if (streq(shutdown_verb, "exit")) {
1514 command_line[pos++] = "--exit-code";
1515 command_line[pos++] = exit_code;
1516 xsprintf(exit_code, "%d", retval);
1517 }
1518
1519 assert(pos < ELEMENTSOF(command_line));
1520
7eb35049
LP		 1521 if (streq(shutdown_verb, "reboot") &&
1522 arg_shutdown_watchdog > 0 &&
1523 arg_shutdown_watchdog != USEC_INFINITY) {
1524
4a36297c
LP		 1525 char *e;
1526
1527 /* If we reboot let's set the shutdown
1528 * watchdog and tell the shutdown binary to
1529 * repeatedly ping it */
1530 r = watchdog_set_timeout(&arg_shutdown_watchdog);
1531 watchdog_close(r < 0);
1532
1533 /* Tell the binary how often to ping, ignore failure */
1534 if (asprintf(&e, "WATCHDOG_USEC="USEC_FMT, arg_shutdown_watchdog) > 0)
8a2c1fbf
EJ		 1535 (void) strv_consume(&env_block, e);
1536
1537 if (arg_watchdog_device &&
1538 asprintf(&e, "WATCHDOG_DEVICE=%s", arg_watchdog_device) > 0)
1539 (void) strv_consume(&env_block, e);
4a36297c
LP		 1540 } else
1541 watchdog_close(true);
1542
1543 /* Avoid the creation of new processes forked by the
1544 * kernel; at this point, we will not listen to the
1545 * signals anyway */
1546 if (detect_container() <= 0)
1547 (void) cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER);
1548
1549 execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block);
1550 return -errno;
1551}
1552
e839bafd
LP		 1553static void initialize_clock(void) {
1554 int r;
1555
1556 if (clock_is_localtime(NULL) > 0) {
1557 int min;
1558
1559 /*
1560 * The very first call of settimeofday() also does a time warp in the kernel.
1561 *
1562 * In the rtc-in-local time mode, we set the kernel's timezone, and rely on external tools to take care
1563 * of maintaining the RTC and do all adjustments. This matches the behavior of Windows, which leaves
1564 * the RTC alone if the registry tells that the RTC runs in UTC.
1565 */
1566 r = clock_set_timezone(&min);
1567 if (r < 0)
1568 log_error_errno(r, "Failed to apply local time delta, ignoring: %m");
1569 else
1570 log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min);
1571
1572 } else if (!in_initrd()) {
1573 /*
1574 * Do a dummy very first call to seal the kernel's time warp magic.
1575 *
1576 * Do not call this from inside the initrd. The initrd might not carry /etc/adjtime with LOCAL, but the
1577 * real system could be set up that way. In such case, we need to delay the time-warp or the sealing
1578 * until we reach the real system.
1579 *
1580 * Do no set the kernel's timezone. The concept of local time cannot be supported reliably, the time
1581 * will jump or be incorrect at every daylight saving time change. All kernel local time concepts will
1582 * be treated as UTC that way.
1583 */
1584 (void) clock_reset_timewarp();
1585 }
1586
1587 r = clock_apply_epoch();
1588 if (r < 0)
1589 log_error_errno(r, "Current system time is before build time, but cannot correct: %m");
1590 else if (r > 0)
1591 log_info("System time before build time, advancing clock.");
1592}
1593
1e41242e
LP		 1594static void initialize_coredump(bool skip_setup) {
1595
1596 if (getpid_cached() != 1)
1597 return;
1598
1599 /* Don't limit the core dump size, so that coredump handlers such as systemd-coredump (which honour the limit)
1600 * will process core dumps for system services by default. */
1601 if (setrlimit(RLIMIT_CORE, &RLIMIT_MAKE_CONST(RLIM_INFINITY)) < 0)
1602 log_warning_errno(errno, "Failed to set RLIMIT_CORE: %m");
1603
1604 /* But at the same time, turn off the core_pattern logic by default, so that no coredumps are stored
1605 * until the systemd-coredump tool is enabled via sysctl. */
1606 if (!skip_setup)
1607 (void) write_string_file("/proc/sys/kernel/core_pattern", "|/bin/false", 0);
1608}
1609
3c7878f9
LP		 1610static void do_reexecute(
1611 int argc,
1612 char *argv[],
1613 const struct rlimit *saved_rlimit_nofile,
1614 const struct rlimit *saved_rlimit_memlock,
1615 FDSet *fds,
1616 const char *switch_root_dir,
1617 const char *switch_root_init,
1618 const char **ret_error_message) {
1619
1620 unsigned i, j, args_size;
1621 const char **args;
1622 int r;
1623
1624 assert(saved_rlimit_nofile);
1625 assert(saved_rlimit_memlock);
1626 assert(ret_error_message);
1627
1628 /* Close and disarm the watchdog, so that the new instance can reinitialize it, but doesn't get rebooted while
1629 * we do that */
1630 watchdog_close(true);
1631
1632 /* Reset the RLIMIT_NOFILE to the kernel default, so that the new systemd can pass the kernel default to its
1633 * child processes */
1634
1635 if (saved_rlimit_nofile->rlim_cur > 0)
1636 (void) setrlimit(RLIMIT_NOFILE, saved_rlimit_nofile);
1637 if (saved_rlimit_memlock->rlim_cur != (rlim_t) -1)
1638 (void) setrlimit(RLIMIT_MEMLOCK, saved_rlimit_memlock);
1639
1640 if (switch_root_dir) {
1641 /* Kill all remaining processes from the initrd, but don't wait for them, so that we can handle the
1642 * SIGCHLD for them after deserializing. */
1643 broadcast_signal(SIGTERM, false, true);
1644
1645 /* And switch root with MS_MOVE, because we remove the old directory afterwards and detach it. */
1646 r = switch_root(switch_root_dir, "/mnt", true, MS_MOVE);
1647 if (r < 0)
1648 log_error_errno(r, "Failed to switch root, trying to continue: %m");
1649 }
1650
1651 args_size = MAX(6, argc+1);
1652 args = newa(const char*, args_size);
1653
1654 if (!switch_root_init) {
1655 char sfd[DECIMAL_STR_MAX(int) + 1];
1656
1657 /* First try to spawn ourselves with the right path, and with full serialization. We do this only if
1658 * the user didn't specify an explicit init to spawn. */
1659
1660 assert(arg_serialization);
1661 assert(fds);
1662
1663 xsprintf(sfd, "%i", fileno(arg_serialization));
1664
1665 i = 0;
1666 args[i++] = SYSTEMD_BINARY_PATH;
1667 if (switch_root_dir)
1668 args[i++] = "--switched-root";
1669 args[i++] = arg_system ? "--system" : "--user";
1670 args[i++] = "--deserialize";
1671 args[i++] = sfd;
1672 args[i++] = NULL;
1673
1674 assert(i <= args_size);
1675
1676 /*
1677 * We want valgrind to print its memory usage summary before reexecution. Valgrind won't do this is on
1678 * its own on exec(), but it will do it on exit(). Hence, to ensure we get a summary here, fork() off
1679 * a child, let it exit() cleanly, so that it prints the summary, and wait() for it in the parent,
1680 * before proceeding into the exec().
1681 */
1682 valgrind_summary_hack();
1683
1684 (void) execv(args[0], (char* const*) args);
1685 log_debug_errno(errno, "Failed to execute our own binary, trying fallback: %m");
1686 }
1687
1688 /* Try the fallback, if there is any, without any serialization. We pass the original argv[] and envp[]. (Well,
1689 * modulo the ordering changes due to getopt() in argv[], and some cleanups in envp[], but let's hope that
1690 * doesn't matter.) */
1691
1692 arg_serialization = safe_fclose(arg_serialization);
1693 fds = fdset_free(fds);
1694
1695 /* Reopen the console */
1696 (void) make_console_stdio();
1697
1698 for (j = 1, i = 1; j < (unsigned) argc; j++)
1699 args[i++] = argv[j];
1700 args[i++] = NULL;
1701 assert(i <= args_size);
1702
1703 /* Reenable any blocked signals, especially important if we switch from initial ramdisk to init=... */
1704 (void) reset_all_signal_handlers();
1705 (void) reset_signal_mask();
1706
1707 if (switch_root_init) {
1708 args[0] = switch_root_init;
1709 (void) execv(args[0], (char* const*) args);
1710 log_warning_errno(errno, "Failed to execute configured init, trying fallback: %m");
1711 }
1712
1713 args[0] = "/sbin/init";
1714 (void) execv(args[0], (char* const*) args);
1715 r = -errno;
1716
1717 manager_status_printf(NULL, STATUS_TYPE_EMERGENCY,
1718 ANSI_HIGHLIGHT_RED " !! " ANSI_NORMAL,
1719 "Failed to execute /sbin/init");
1720
1721 if (r == -ENOENT) {
1722 log_warning("No /sbin/init, trying fallback");
1723
1724 args[0] = "/bin/sh";
1725 args[1] = NULL;
1726 (void) execv(args[0], (char* const*) args);
1727 log_error_errno(errno, "Failed to execute /bin/sh, giving up: %m");
1728 } else
1729 log_warning_errno(r, "Failed to execute /sbin/init, giving up: %m");
1730
1731 *ret_error_message = "Failed to execute fallback shell";
1732}
1733
7eb35049
LP		 1734static int invoke_main_loop(
1735 Manager *m,
1736 bool *ret_reexecute,
1737 int *ret_retval, /* Return parameters relevant for shutting down */
1738 const char **ret_shutdown_verb, /* … */
1739 FDSet **ret_fds, /* Return parameters for reexecuting */
1740 char **ret_switch_root_dir, /* … */
1741 char **ret_switch_root_init, /* … */
1742 const char **ret_error_message) {
1743
1744 int r;
1745
1746 assert(m);
1747 assert(ret_reexecute);
1748 assert(ret_retval);
1749 assert(ret_shutdown_verb);
1750 assert(ret_fds);
1751 assert(ret_switch_root_dir);
1752 assert(ret_switch_root_init);
1753 assert(ret_error_message);
1754
1755 for (;;) {
1756 r = manager_loop(m);
1757 if (r < 0) {
1758 *ret_error_message = "Failed to run main loop";
1759 return log_emergency_errno(r, "Failed to run main loop: %m");
1760 }
1761
1762 switch (m->exit_code) {
1763
1764 case MANAGER_RELOAD:
1765 log_info("Reloading.");
1766
1767 r = parse_config_file();
1768 if (r < 0)
1769 log_warning_errno(r, "Failed to parse config file, ignoring: %m");
1770
1771 set_manager_defaults(m);
1772
1773 r = manager_reload(m);
1774 if (r < 0)
1775 log_warning_errno(r, "Failed to reload, ignoring: %m");
1776
1777 break;
1778
1779 case MANAGER_REEXECUTE:
1780
1781 r = prepare_reexecute(m, &arg_serialization, ret_fds, false);
1782 if (r < 0) {
1783 *ret_error_message = "Failed to prepare for reexecution";
1784 return r;
1785 }
1786
1787 log_notice("Reexecuting.");
1788
1789 *ret_reexecute = true;
1790 *ret_retval = EXIT_SUCCESS;
1791 *ret_shutdown_verb = NULL;
1792 *ret_switch_root_dir = *ret_switch_root_init = NULL;
1793
1794 return 0;
1795
1796 case MANAGER_SWITCH_ROOT:
1797 if (!m->switch_root_init) {
1798 r = prepare_reexecute(m, &arg_serialization, ret_fds, true);
1799 if (r < 0) {
1800 *ret_error_message = "Failed to prepare for reexecution";
1801 return r;
1802 }
1803 } else
1804 *ret_fds = NULL;
1805
1806 log_notice("Switching root.");
1807
1808 *ret_reexecute = true;
1809 *ret_retval = EXIT_SUCCESS;
1810 *ret_shutdown_verb = NULL;
1811
1812 /* Steal the switch root parameters */
1813 *ret_switch_root_dir = m->switch_root;
1814 *ret_switch_root_init = m->switch_root_init;
1815 m->switch_root = m->switch_root_init = NULL;
1816
1817 return 0;
1818
1819 case MANAGER_EXIT:
1820
1821 if (MANAGER_IS_USER(m)) {
1822 log_debug("Exit.");
1823
1824 *ret_reexecute = false;
1825 *ret_retval = m->return_value;
1826 *ret_shutdown_verb = NULL;
1827 *ret_fds = NULL;
1828 *ret_switch_root_dir = *ret_switch_root_init = NULL;
1829
1830 return 0;
1831 }
1832
1833 _fallthrough_;
1834 case MANAGER_REBOOT:
1835 case MANAGER_POWEROFF:
1836 case MANAGER_HALT:
1837 case MANAGER_KEXEC: {
1838 static const char * const table[_MANAGER_EXIT_CODE_MAX] = {
1839 [MANAGER_EXIT] = "exit",
1840 [MANAGER_REBOOT] = "reboot",
1841 [MANAGER_POWEROFF] = "poweroff",
1842 [MANAGER_HALT] = "halt",
1843 [MANAGER_KEXEC] = "kexec"
1844 };
1845
1846 log_notice("Shutting down.");
1847
1848 *ret_reexecute = false;
1849 *ret_retval = m->return_value;
1850 assert_se(*ret_shutdown_verb = table[m->exit_code]);
1851 *ret_fds = NULL;
1852 *ret_switch_root_dir = *ret_switch_root_init = NULL;
1853
1854 return 0;
1855 }
1856
1857 default:
1858 assert_not_reached("Unknown exit code.");
1859 }
1860 }
1861}
1862
31aef7ff
LP		 1863static void log_execution_mode(bool *ret_first_boot) {
1864 assert(ret_first_boot);
1865
1866 if (arg_system) {
1867 int v;
1868
1869 log_info(PACKAGE_STRING " running in %ssystem mode. (" SYSTEMD_FEATURES ")",
1870 arg_action == ACTION_TEST ? "test " : "" );
1871
1872 v = detect_virtualization();
1873 if (v > 0)
1874 log_info("Detected virtualization %s.", virtualization_to_string(v));
1875
1876 log_info("Detected architecture %s.", architecture_to_string(uname_architecture()));
1877
1878 if (in_initrd()) {
1879 *ret_first_boot = false;
1880 log_info("Running in initial RAM disk.");
1881 } else {
1882 /* Let's check whether we are in first boot, i.e. whether /etc is still unpopulated. We use
1883 * /etc/machine-id as flag file, for this: if it exists we assume /etc is populated, if it
1884 * doesn't it's unpopulated. This allows container managers and installers to provision a
1885 * couple of files already. If the container manager wants to provision the machine ID itself
1886 * it should pass $container_uuid to PID 1. */
1887
1888 *ret_first_boot = access("/etc/machine-id", F_OK) < 0;
1889 if (*ret_first_boot)
1890 log_info("Running with unpopulated /etc.");
1891 }
1892 } else {
1893 _cleanup_free_ char *t;
1894
1895 t = uid_to_name(getuid());
1896 log_debug(PACKAGE_STRING " running in %suser mode for user " UID_FMT "/%s. (" SYSTEMD_FEATURES ")",
1897 arg_action == ACTION_TEST ? " test" : "", getuid(), strna(t));
1898
1899 *ret_first_boot = false;
1900 }
1901}
1902
5afbaa36
LP		 1903static int initialize_runtime(
1904 bool skip_setup,
1905 struct rlimit *saved_rlimit_nofile,
1906 struct rlimit *saved_rlimit_memlock,
1907 const char **ret_error_message) {
1908
1909 int r;
1910
1911 assert(ret_error_message);
1912
1913 /* Sets up various runtime parameters. Many of these initializations are conditionalized:
1914 *
1915 * - Some only apply to --system instances
1916 * - Some only apply to --user instances
1917 * - Some only apply when we first start up, but not when we reexecute
1918 */
1919
3c3c6cb9
LP		 1920 if (arg_system) {
1921 /* Make sure we leave a core dump without panicing the kernel. */
1922 install_crash_handler();
5afbaa36 1923
3c3c6cb9
LP		 1924 if (!skip_setup) {
1925 r = mount_cgroup_controllers(arg_join_controllers);
1926 if (r < 0) {
1927 *ret_error_message = "Failed to mount cgroup hierarchies";
1928 return r;
1929 }
1930
1931 status_welcome();
1932 hostname_setup();
1933 machine_id_setup(NULL, arg_machine_id, NULL);
1934 loopback_setup();
1935 bump_unix_max_dgram_qlen();
1936 test_usr();
1937 write_container_id();
1938 }
8a2c1fbf 1939
3c3c6cb9
LP		 1940 if (arg_watchdog_device) {
1941 r = watchdog_set_device(arg_watchdog_device);
1942 if (r < 0)
1943 log_warning_errno(r, "Failed to set watchdog device to %s, ignoring: %m", arg_watchdog_device);
1944 }
1945
1946 if (arg_runtime_watchdog > 0 && arg_runtime_watchdog != USEC_INFINITY)
1947 watchdog_set_timeout(&arg_runtime_watchdog);
1948 }
5afbaa36
LP		 1949
1950 if (arg_timer_slack_nsec != NSEC_INFINITY)
1951 if (prctl(PR_SET_TIMERSLACK, arg_timer_slack_nsec) < 0)
1952 log_error_errno(errno, "Failed to adjust timer slack: %m");
1953
1954 if (arg_system && !cap_test_all(arg_capability_bounding_set)) {
1955 r = capability_bounding_set_drop_usermode(arg_capability_bounding_set);
1956 if (r < 0) {
1957 *ret_error_message = "Failed to drop capability bounding set of usermode helpers";
1958 return log_emergency_errno(r, "Failed to drop capability bounding set of usermode helpers: %m");
1959 }
1960
1961 r = capability_bounding_set_drop(arg_capability_bounding_set, true);
1962 if (r < 0) {
1963 *ret_error_message = "Failed to drop capability bounding set";
1964 return log_emergency_errno(r, "Failed to drop capability bounding set: %m");
1965 }
1966 }
1967
1968 if (arg_syscall_archs) {
1969 r = enforce_syscall_archs(arg_syscall_archs);
1970 if (r < 0) {
1971 *ret_error_message = "Failed to set syscall architectures";
1972 return r;
1973 }
1974 }
1975
1976 if (!arg_system)
1977 /* Become reaper of our children */
1978 if (prctl(PR_SET_CHILD_SUBREAPER, 1) < 0)
1979 log_warning_errno(errno, "Failed to make us a subreaper: %m");
1980
1981 if (arg_system) {
1982 /* Bump up RLIMIT_NOFILE for systemd itself */
1983 (void) bump_rlimit_nofile(saved_rlimit_nofile);
1984 (void) bump_rlimit_memlock(saved_rlimit_memlock);
1985 }
1986
1987 return 0;
1988}
1989
6acca5fc
LP		 1990static int do_queue_default_job(
1991 Manager *m,
1992 const char **ret_error_message) {
1993
1994 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1995 Job *default_unit_job;
1996 Unit *target = NULL;
1997 int r;
1998
1999 log_debug("Activating default unit: %s", arg_default_unit);
2000
2001 r = manager_load_unit(m, arg_default_unit, NULL, &error, &target);
2002 if (r < 0)
2003 log_error("Failed to load default target: %s", bus_error_message(&error, r));
2004 else if (IN_SET(target->load_state, UNIT_ERROR, UNIT_NOT_FOUND))
2005 log_error_errno(target->load_error, "Failed to load default target: %m");
2006 else if (target->load_state == UNIT_MASKED)
2007 log_error("Default target masked.");
2008
2009 if (!target || target->load_state != UNIT_LOADED) {
2010 log_info("Trying to load rescue target...");
2011
2012 r = manager_load_unit(m, SPECIAL_RESCUE_TARGET, NULL, &error, &target);
2013 if (r < 0) {
2014 *ret_error_message = "Failed to load rescue target";
2015 return log_emergency_errno(r, "Failed to load rescue target: %s", bus_error_message(&error, r));
2016 } else if (IN_SET(target->load_state, UNIT_ERROR, UNIT_NOT_FOUND)) {
2017 *ret_error_message = "Failed to load rescue target";
2018 return log_emergency_errno(target->load_error, "Failed to load rescue target: %m");
2019 } else if (target->load_state == UNIT_MASKED) {
2020 *ret_error_message = "Rescue target masked";
2021 log_emergency("Rescue target masked.");
2022 return -ERFKILL;
2023 }
2024 }
2025
2026 assert(target->load_state == UNIT_LOADED);
2027
2028 r = manager_add_job(m, JOB_START, target, JOB_ISOLATE, &error, &default_unit_job);
2029 if (r == -EPERM) {
2030 log_debug_errno(r, "Default target could not be isolated, starting instead: %s", bus_error_message(&error, r));
2031
2032 sd_bus_error_free(&error);
2033
2034 r = manager_add_job(m, JOB_START, target, JOB_REPLACE, &error, &default_unit_job);
2035 if (r < 0) {
2036 *ret_error_message = "Failed to start default target";
2037 return log_emergency_errno(r, "Failed to start default target: %s", bus_error_message(&error, r));
2038 }
2039
2040 } else if (r < 0) {
2041 *ret_error_message = "Failed to isolate default target";
2042 return log_emergency_errno(r, "Failed to isolate default target: %s", bus_error_message(&error, r));
2043 }
2044
2045 m->default_unit_job_id = default_unit_job->id;
2046
2047 return 0;
2048}
2049
970777b5
LP		 2050static void free_arguments(void) {
2051 size_t j;
2052
2053 /* Frees all arg_* variables, with the exception of arg_serialization */
2054
2055 for (j = 0; j < ELEMENTSOF(arg_default_rlimit); j++)
2056 arg_default_rlimit[j] = mfree(arg_default_rlimit[j]);
2057
2058 arg_default_unit = mfree(arg_default_unit);
2059 arg_confirm_spawn = mfree(arg_confirm_spawn);
2060 arg_join_controllers = strv_free_free(arg_join_controllers);
2061 arg_default_environment = strv_free(arg_default_environment);
2062 arg_syscall_archs = set_free(arg_syscall_archs);
2063}
2064
97d1fb94
LP		 2065static int load_configuration(int argc, char **argv, const char **ret_error_message) {
2066 int r;
2067
2068 assert(ret_error_message);
2069
6f101b56
LP		 2070 r = initialize_join_controllers();
2071 if (r < 0) {
2072 *ret_error_message = "Failed to initialize cgroup controller joining table";
2073 return r;
2074 }
2075
97d1fb94
LP		 2076 arg_default_tasks_max = system_tasks_max_scale(DEFAULT_TASKS_MAX_PERCENTAGE, 100U);
2077
2078 r = parse_config_file();
2079 if (r < 0) {
2080 *ret_error_message = "Failed to parse config file";
2081 return r;
2082 }
2083
2084 if (arg_system) {
2085 r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, 0);
2086 if (r < 0)
2087 log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
2088 }
2089
2090 /* Note that this also parses bits from the kernel command line, including "debug". */
2091 log_parse_environment();
2092
2093 r = parse_argv(argc, argv);
2094 if (r < 0) {
2095 *ret_error_message = "Failed to parse commandline arguments";
2096 return r;
2097 }
2098
2099 /* Initialize default unit */
2100 if (!arg_default_unit) {
2101 arg_default_unit = strdup(SPECIAL_DEFAULT_TARGET);
2102 if (!arg_default_unit) {
2103 *ret_error_message = "Failed to set default unit";
2104 return log_oom();
2105 }
2106 }
2107
db33214b
LP		 2108 /* Initialize the show status setting if it hasn't been set explicitly yet */
2109 if (arg_show_status == _SHOW_STATUS_UNSET)
2110 arg_show_status = SHOW_STATUS_YES;
2111
97d1fb94
LP		 2112 return 0;
2113}
2114
b0d7c989
LP		 2115static int safety_checks(void) {
2116
febf46a4
LP		 2117 if (getpid_cached() == 1 &&
2118 arg_action != ACTION_RUN) {
2119 log_error("Unsupported execution mode while PID 1.");
2120 return -EPERM;
2121 }
2122
2123 if (getpid_cached() == 1 &&
2124 !arg_system) {
2125 log_error("Can't run --user mode as PID 1.");
2126 return -EPERM;
2127 }
2128
2129 if (arg_action == ACTION_RUN &&
2130 arg_system &&
2131 getpid_cached() != 1) {
2132 log_error("Can't run system mode unless PID 1.");
2133 return -EPERM;
2134 }
2135
b0d7c989
LP		 2136 if (arg_action == ACTION_TEST &&
2137 geteuid() == 0) {
2138 log_error("Don't run test mode as root.");
2139 return -EPERM;
2140 }
2141
2142 if (!arg_system &&
2143 arg_action == ACTION_RUN &&
2144 sd_booted() <= 0) {
2145 log_error("Trying to run as user instance, but the system has not been booted with systemd.");
2146 return -EOPNOTSUPP;
2147 }
2148
2149 if (!arg_system &&
2150 arg_action == ACTION_RUN &&
2151 !getenv("XDG_RUNTIME_DIR")) {
2152 log_error("Trying to run as user instance, but $XDG_RUNTIME_DIR is not set.");
2153 return -EUNATCH;
2154 }
2155
2156 if (arg_system &&
2157 arg_action == ACTION_RUN &&
2158 running_in_chroot() > 0) {
2159 log_error("Cannot be run in a chroot() environment.");
2160 return -EOPNOTSUPP;
2161 }
2162
2163 return 0;
2164}
2165
74da609f
LP		 2166static int initialize_security(
2167 bool *loaded_policy,
2168 dual_timestamp *security_start_timestamp,
2169 dual_timestamp *security_finish_timestamp,
2170 const char **ret_error_message) {
2171
2172 int r;
2173
2174 assert(loaded_policy);
2175 assert(security_start_timestamp);
2176 assert(security_finish_timestamp);
2177 assert(ret_error_message);
2178
2179 dual_timestamp_get(security_start_timestamp);
2180
2181 r = mac_selinux_setup(loaded_policy) < 0;
2182 if (r < 0) {
2183 *ret_error_message = "Failed to load SELinux policy";
2184 return r;
2185 }
2186
2187 r = mac_smack_setup(loaded_policy);
2188 if (r < 0) {
2189 *ret_error_message = "Failed to load SMACK policy";
2190 return r;
2191 }
2192
2193 r = ima_setup();
2194 if (r < 0) {
2195 *ret_error_message = "Failed to load IMA policy";
2196 return r;
2197 }
2198
2199 dual_timestamp_get(security_finish_timestamp);
2200 return 0;
2201}
2202
263162da
LP		 2203static void test_summary(Manager *m) {
2204 assert(m);
2205
2206 printf("-> By units:\n");
2207 manager_dump_units(m, stdout, "\t");
2208
2209 printf("-> By jobs:\n");
2210 manager_dump_jobs(m, stdout, "\t");
2211}
2212
51e5ff02
LP		 2213static void log_taint_string(Manager *m) {
2214 _cleanup_free_ char *taint = NULL;
2215
2216 assert(m);
2217
2218 if (!arg_system)
2219 return;
2220
2221 taint = manager_taint_string(m);
2222 if (isempty(taint))
2223 return;
2224
2225 log_struct(LOG_NOTICE,
2226 LOG_MESSAGE("System is tainted: %s", taint),
2227 "TAINT=%s", taint,
2228 "MESSAGE_ID=" SD_MESSAGE_TAINTED_STR,
2229 NULL);
2230}
2231
efeb853f
LP		 2232static int collect_fds(FDSet **ret_fds, const char **ret_error_message) {
2233 int r;
2234
2235 assert(ret_fds);
2236 assert(ret_error_message);
2237
2238 r = fdset_new_fill(ret_fds);
2239 if (r < 0) {
2240 *ret_error_message = "Failed to allocate fd set";
2241 return log_emergency_errno(r, "Failed to allocate fd set: %m");
2242 }
2243
2244 fdset_cloexec(*ret_fds, true);
2245
2246 if (arg_serialization)
2247 assert_se(fdset_remove(*ret_fds, fileno(arg_serialization)) >= 0);
2248
2249 return 0;
2250}
2251
2e51b31c
LP		 2252static void setup_console_terminal(bool skip_setup) {
2253
2254 if (!arg_system)
2255 return;
2256
2257 /* Become a session leader if we aren't one yet. */
2258 (void) setsid();
2259
2260 /* If we are init, we connect stdin/stdout/stderr to /dev/null and make sure we don't have a controlling
2261 * tty. */
2262 (void) release_terminal();
2263
2264 /* Reset the console, but only if this is really init and we are freshly booted */
2265 if (getpid_cached() == 1 && !skip_setup)
2266 (void) console_setup();
2267}
2268
60918275
LP		 2269int main(int argc, char *argv[]) {
2270 Manager *m = NULL;
22f4096c 2271 int r, retval = EXIT_FAILURE;
9d76d730
LP		 2272 usec_t before_startup, after_startup;
2273 char timespan[FORMAT_TIMESPAN_MAX];
a16e1123
LP		 2274 FDSet *fds = NULL;
2275 bool reexecute = false;
b9080b03 2276 const char *shutdown_verb = NULL;
86caf095
LP		 2277 dual_timestamp initrd_timestamp = DUAL_TIMESTAMP_NULL;
2278 dual_timestamp userspace_timestamp = DUAL_TIMESTAMP_NULL;
2279 dual_timestamp kernel_timestamp = DUAL_TIMESTAMP_NULL;
2280 dual_timestamp security_start_timestamp = DUAL_TIMESTAMP_NULL;
2281 dual_timestamp security_finish_timestamp = DUAL_TIMESTAMP_NULL;
5d6b1584 2282 static char systemd[] = "systemd";
2660882b 2283 bool skip_setup = false;
0b3325e7 2284 bool loaded_policy = false;
bf4df7c3 2285 bool queue_default_job = false;
fd130612 2286 bool first_boot = false;
41669317 2287 char *switch_root_dir = NULL, *switch_root_init = NULL;
fb3ae275 2288 struct rlimit saved_rlimit_nofile = RLIMIT_MAKE_CONST(0), saved_rlimit_memlock = RLIMIT_MAKE_CONST((rlim_t) -1);
cb6531be 2289 const char *error_message = NULL;
27b14a22 2290
6808a0bc 2291 redirect_telinit(argc, argv);
2cb1a60d 2292
c3a170f3
HH		 2293 dual_timestamp_from_monotonic(&kernel_timestamp, 0);
2294 dual_timestamp_get(&userspace_timestamp);
2295
0b3325e7
LP		 2296 /* Determine if this is a reexecution or normal bootup. We do
2297 * the full command line parsing much later, so let's just
2298 * have a quick peek here. */
db813c2a
LP		 2299 if (strv_find(argv+1, "--deserialize"))
2300 skip_setup = true;
0b3325e7 2301
2660882b
LP		 2302 /* If we have switched root, do all the special setup
2303 * things */
db813c2a
LP		 2304 if (strv_find(argv+1, "--switched-root"))
2305 skip_setup = false;
d03bc1b8 2306
f3b6a3ed
LP		 2307 /* If we get started via the /sbin/init symlink then we are
2308 called 'init'. After a subsequent reexecution we are then
2309 called 'systemd'. That is confusing, hence let's call us
2310 systemd right-away. */
f3b6a3ed 2311 program_invocation_short_name = systemd;
eee8b7ab 2312 (void) prctl(PR_SET_NAME, systemd);
5d6b1584 2313
9a0e6896
LP		 2314 saved_argv = argv;
2315 saved_argc = argc;
f3b6a3ed 2316
c1dc6153 2317 log_set_upgrade_syslog_to_journal(true);
bbe63281 2318
df0ff127 2319 if (getpid_cached() == 1) {
48a601fe 2320 /* Disable the umask logic */
90dc8c2e
MG		 2321 umask(0);
2322
48a601fe
LP		 2323 /* Always reopen /dev/console when running as PID 1 or one of its pre-execve() children. This is
2324 * important so that we never end up logging to any foreign stderr, for example if we have to log in a
2325 * child process right before execve()'ing the actual binary, at a point in time where socket
2326 * activation stderr/stdout area already set up. */
2327 log_set_always_reopen_console(true);
2328 }
2329
df0ff127 2330 if (getpid_cached() == 1 && detect_container() <= 0) {
4f8d551f 2331
a866073d 2332 /* Running outside of a container as PID 1 */
463d0d15 2333 arg_system = true;
a866073d
LP		 2334 log_set_target(LOG_TARGET_KMSG);
2335 log_open();
2336
21bf2ab0 2337 if (in_initrd())
c3a170f3 2338 initrd_timestamp = userspace_timestamp;
c3ba6250 2339
2660882b 2340 if (!skip_setup) {
d723cd65
AK		 2341 r = mount_setup_early();
2342 if (r < 0) {
eee8b7ab 2343 error_message = "Failed to mount early API filesystems";
d723cd65
AK		 2344 goto finish;
2345 }
eee8b7ab 2346
74da609f
LP		 2347 r = initialize_security(
2348 &loaded_policy,
2349 &security_start_timestamp,
2350 &security_finish_timestamp,
2351 &error_message);
2352 if (r < 0)
96694e99 2353 goto finish;
81611586 2354 }
0b3325e7 2355
c3dacc8b 2356 if (mac_selinux_init() < 0) {
cb6531be 2357 error_message = "Failed to initialize SELinux policy";
0ff4cdd9 2358 goto finish;
cb6531be 2359 }
7948c4df 2360
e839bafd
LP		 2361 if (!skip_setup)
2362 initialize_clock();
a866073d
LP		 2363
2364 /* Set the default for later on, but don't actually
2365 * open the logs like this for now. Note that if we
2366 * are transitioning from the initrd there might still
2367 * be journal fd open, and we shouldn't attempt
2368 * opening that before we parsed /proc/cmdline which
2369 * might redirect output elsewhere. */
2370 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
2371
df0ff127 2372 } else if (getpid_cached() == 1) {
a866073d 2373 /* Running inside a container, as PID 1 */
463d0d15 2374 arg_system = true;
a866073d 2375 log_set_target(LOG_TARGET_CONSOLE);
99f09825 2376 log_close_console(); /* force reopen of /dev/console */
a866073d
LP		 2377 log_open();
2378
eee8b7ab 2379 /* For later on, see above... */
a866073d
LP		 2380 log_set_target(LOG_TARGET_JOURNAL);
2381
c3a170f3
HH		 2382 /* clear the kernel timestamp,
2383 * because we are in a container */
0f5f63c3 2384 kernel_timestamp = DUAL_TIMESTAMP_NULL;
c3a170f3 2385 } else {
a866073d 2386 /* Running as user instance */
463d0d15 2387 arg_system = false;
eeecf6e6 2388 log_set_target(LOG_TARGET_AUTO);
871e5809 2389 log_open();
c3a170f3
HH		 2390
2391 /* clear the kernel timestamp,
2392 * because we are not PID 1 */
6513d561 2393 kernel_timestamp = DUAL_TIMESTAMP_NULL;
bbe63281 2394 }
a5dab5ce 2395
1e41242e 2396 initialize_coredump(skip_setup);
15a90032 2397
6edefe0b 2398 if (arg_system) {
84af7821
LP		 2399 if (fixup_environment() < 0) {
2400 error_message = "Failed to fix up PID1 environment";
2401 goto finish;
2402 }
32391275 2403
3a18b604
FB		 2404 /* Try to figure out if we can use colors with the console. No
2405 * need to do that for user instances since they never log
2406 * into the console. */
2407 log_show_color(colors_enabled());
c76cf844
AK		 2408 r = make_null_stdio();
2409 if (r < 0)
2410 log_warning_errno(r, "Failed to redirect standard streams to /dev/null: %m");
3a18b604
FB		 2411 }
2412
f170852a
LP		 2413 /* Mount /proc, /sys and friends, so that /proc/cmdline and
2414 * /proc/$PID/fd is available. */
df0ff127 2415 if (getpid_cached() == 1) {
f84f9974 2416
a132bef0 2417 /* Load the kernel modules early. */
2e75e2a8
DM		 2418 if (!skip_setup)
2419 kmod_setup();
2e75e2a8 2420
0c85a4f3 2421 r = mount_setup(loaded_policy);
cb6531be
ZJS		 2422 if (r < 0) {
2423 error_message = "Failed to mount API filesystems";
8efe3c01 2424 goto finish;
cb6531be 2425 }
0c85a4f3 2426 }
4ade7963
LP		 2427
2428 /* Reset all signal handlers. */
ce30c8dc
LP		 2429 (void) reset_all_signal_handlers();
2430 (void) ignore_signals(SIGNALS_IGNORE, -1);
078e4539 2431
97d1fb94
LP		 2432 r = load_configuration(argc, argv, &error_message);
2433 if (r < 0)
f170852a 2434 goto finish;
10c961b9 2435
b0d7c989
LP		 2436 r = safety_checks();
2437 if (r < 0)
fe783b03 2438 goto finish;
fe783b03 2439
5625c18a 2440 if (IN_SET(arg_action, ACTION_TEST, ACTION_HELP, ACTION_DUMP_CONFIGURATION_ITEMS))
ea4b98e6 2441 pager_open(arg_no_pager, false);
b0d7c989
LP		 2442
2443 if (arg_action != ACTION_RUN)
74e7579c 2444 skip_setup = true;
b87c2aa6 2445
fa0f4d8a 2446 if (arg_action == ACTION_HELP) {
f170852a
LP		 2447 retval = help();
2448 goto finish;
9ba0bc4e
ZJS		 2449 } else if (arg_action == ACTION_VERSION) {
2450 retval = version();
2451 goto finish;
fa0f4d8a 2452 } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
e537352b 2453 unit_dump_config_items(stdout);
22f4096c 2454 retval = EXIT_SUCCESS;
e537352b 2455 goto finish;
f170852a
LP		 2456 }
2457
4c701096 2458 assert_se(IN_SET(arg_action, ACTION_RUN, ACTION_TEST));
f170852a 2459
5a2e0c62
LP		 2460 /* Move out of the way, so that we won't block unmounts */
2461 assert_se(chdir("/") == 0);
2462
dea374e8 2463 if (arg_action == ACTION_RUN) {
a70c72a0 2464
efeb853f 2465 /* Close logging fds, in order not to confuse collecting passed fds and terminal logic below */
a70c72a0
LP		 2466 log_close();
2467
2468 /* Remember open file descriptors for later deserialization */
efeb853f
LP		 2469 r = collect_fds(&fds, &error_message);
2470 if (r < 0)
dea374e8 2471 goto finish;
a16e1123 2472
2e51b31c
LP		 2473 /* Give up any control of the console, but make sure its initialized. */
2474 setup_console_terminal(skip_setup);
56d96fc0 2475
a70c72a0
LP		 2476 /* Open the logging devices, if possible and necessary */
2477 log_open();
56d96fc0 2478 }
4ade7963 2479
31aef7ff 2480 log_execution_mode(&first_boot);
a5dab5ce 2481
dea374e8 2482 if (arg_action == ACTION_RUN) {
5afbaa36
LP		 2483 r = initialize_runtime(skip_setup,
2484 &saved_rlimit_nofile,
2485 &saved_rlimit_memlock,
2486 &error_message);
2487 if (r < 0)
2488 goto finish;
dea374e8 2489 }
4096d6f5 2490
e0a3da1f
ZJS		 2491 r = manager_new(arg_system ? UNIT_FILE_SYSTEM : UNIT_FILE_USER,
2492 arg_action == ACTION_TEST ? MANAGER_TEST_FULL : 0,
2493 &m);
e96d6be7 2494 if (r < 0) {
da927ba9 2495 log_emergency_errno(r, "Failed to allocate manager object: %m");
cb6531be 2496 error_message = "Failed to allocate manager object";
60918275
LP		 2497 goto finish;
2498 }
2499
9f9f0342
LP		 2500 m->timestamps[MANAGER_TIMESTAMP_KERNEL] = kernel_timestamp;
2501 m->timestamps[MANAGER_TIMESTAMP_INITRD] = initrd_timestamp;
2502 m->timestamps[MANAGER_TIMESTAMP_USERSPACE] = userspace_timestamp;
2503 m->timestamps[MANAGER_TIMESTAMP_SECURITY_START] = security_start_timestamp;
2504 m->timestamps[MANAGER_TIMESTAMP_SECURITY_FINISH] = security_finish_timestamp;
9e58ff9c 2505
85cb4151 2506 set_manager_defaults(m);
7b46fc6a 2507 set_manager_settings(m);
fd130612 2508 manager_set_first_boot(m, first_boot);
27d340c7 2509
bf4df7c3 2510 /* Remember whether we should queue the default job */
d3b1c508 2511 queue_default_job = !arg_serialization || arg_switched_root;
bf4df7c3 2512
9d76d730
LP		 2513 before_startup = now(CLOCK_MONOTONIC);
2514
d3b1c508 2515 r = manager_startup(m, arg_serialization, fds);
58f88d92 2516 if (r < 0) {
da927ba9 2517 log_error_errno(r, "Failed to fully start up daemon: %m");
cefb3eda 2518 error_message = "Failed to start up manager";
58f88d92
ZJS		 2519 goto finish;
2520 }
a16e1123 2521
6acca5fc 2522 /* This will close all file descriptors that were opened, but not claimed by any unit. */
2feceb5e 2523 fds = fdset_free(fds);
74ca738f 2524 arg_serialization = safe_fclose(arg_serialization);
bf4df7c3
LP		 2525
2526 if (queue_default_job) {
6acca5fc 2527 r = do_queue_default_job(m, &error_message);
718db961 2528 if (r < 0)
37d88da7 2529 goto finish;
6acca5fc 2530 }
ab17a050 2531
6acca5fc 2532 after_startup = now(CLOCK_MONOTONIC);
60918275 2533
6acca5fc
LP		 2534 log_full(arg_action == ACTION_TEST ? LOG_INFO : LOG_DEBUG,
2535 "Loaded units and determined initial transaction in %s.",
2536 format_timespan(timespan, sizeof(timespan), after_startup - before_startup, 100 * USEC_PER_MSEC));
07672f49 2537
51e5ff02 2538 log_taint_string(m);
af6b0ecc 2539
6acca5fc 2540 if (arg_action == ACTION_TEST) {
263162da 2541 test_summary(m);
6acca5fc
LP		 2542 retval = EXIT_SUCCESS;
2543 goto finish;
e965d56d 2544 }
d46de8a1 2545
7eb35049
LP		 2546 r = invoke_main_loop(m,
2547 &reexecute,
2548 &retval,
2549 &shutdown_verb,
2550 &fds,
2551 &switch_root_dir,
2552 &switch_root_init,
2553 &error_message);
f170852a 2554
60918275 2555finish:
b87c2aa6
ZJS		 2556 pager_close();
2557
97792515 2558 if (m)
81f5fc2d 2559 arg_shutdown_watchdog = m->shutdown_watchdog;
fe382237 2560
06d8d842 2561 m = manager_free(m);
60918275 2562
970777b5 2563 free_arguments();
cc56fafe 2564 mac_selinux_finish();
b2bb3dbe 2565
3c7878f9
LP		 2566 if (reexecute)
2567 do_reexecute(argc, argv,
2568 &saved_rlimit_nofile,
2569 &saved_rlimit_memlock,
2570 fds,
2571 switch_root_dir,
2572 switch_root_init,
2573 &error_message); /* This only returns if reexecution failed */
a16e1123 2574
74ca738f 2575 arg_serialization = safe_fclose(arg_serialization);
2feceb5e 2576 fds = fdset_free(fds);
a16e1123 2577
349cc4a5 2578#if HAVE_VALGRIND_VALGRIND_H
54b434b1
LP		 2579 /* If we are PID 1 and running under valgrind, then let's exit
2580 * here explicitly. valgrind will only generate nice output on
2581 * exit(), not on exec(), hence let's do the former not the
2582 * latter here. */
8a2c1fbf
EJ		 2583 if (getpid_cached() == 1 && RUNNING_ON_VALGRIND) {
2584 /* Cleanup watchdog_device strings for valgrind. We need them
2585 * in become_shutdown() so normally we cannot free them yet. */
2586 watchdog_free_device();
2587 arg_watchdog_device = mfree(arg_watchdog_device);
54b434b1 2588 return 0;
8a2c1fbf 2589 }
54b434b1
LP		 2590#endif
2591
b9080b03 2592 if (shutdown_verb) {
7eb35049 2593 r = become_shutdown(shutdown_verb, retval);
ad929bcc 2594
4a36297c 2595 log_error_errno(r, "Failed to execute shutdown binary, %s: %m", getpid_cached() == 1 ? "freezing" : "quitting");
9b9881d7 2596 error_message = "Failed to execute shutdown binary";
b9080b03
FF		 2597 }
2598
8a2c1fbf
EJ		 2599 watchdog_free_device();
2600 arg_watchdog_device = mfree(arg_watchdog_device);
2601
df0ff127 2602 if (getpid_cached() == 1) {
cb6531be
ZJS		 2603 if (error_message)
2604 manager_status_printf(NULL, STATUS_TYPE_EMERGENCY,
1fc464f6 2605 ANSI_HIGHLIGHT_RED "!!!!!!" ANSI_NORMAL,
cb6531be 2606 "%s, freezing.", error_message);
b9e74c39 2607 freeze_or_reboot();
cb6531be 2608 }
c3b3c274 2609
60918275
LP		 2610 return retval;
2611}
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