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main: split out reading of /proc/sys/fs/nr_open into its own function
[thirdparty/systemd.git] / src / core / main.c
CommitLineData
53e1b683 1/* SPDX-License-Identifier: LGPL-2.1+ */
a7334b09
LP		 2/***
3 This file is part of systemd.
4
5 Copyright 2010 Lennart Poettering
a7334b09
LP		 6***/
7
60918275 8#include <errno.h>
3dfc9763 9#include <fcntl.h>
f170852a 10#include <getopt.h>
97c4f35c 11#include <signal.h>
3dfc9763
LP		 12#include <stdio.h>
13#include <string.h>
664f88a7 14#include <sys/mount.h>
3dfc9763 15#include <sys/prctl.h>
b9e74c39 16#include <sys/reboot.h>
3dfc9763
LP		 17#include <sys/stat.h>
18#include <unistd.h>
349cc4a5 19#if HAVE_SECCOMP
b64a3d86
LP		 20#include <seccomp.h>
21#endif
349cc4a5 22#if HAVE_VALGRIND_VALGRIND_H
3dfc9763
LP		 23#include <valgrind/valgrind.h>
24#endif
54b434b1 25
718db961 26#include "sd-bus.h"
cf0fbc49 27#include "sd-daemon.h"
b2e7486c 28#include "sd-messages.h"
3dfc9763 29
b5efdb8a 30#include "alloc-util.h"
d9d93745 31#include "architecture.h"
3dfc9763
LP		 32#include "build.h"
33#include "bus-error.h"
34#include "bus-util.h"
430f0182 35#include "capability-util.h"
24efb112 36#include "clock-util.h"
3dfc9763 37#include "conf-parser.h"
618234a5 38#include "cpu-set-util.h"
bbc1acab 39#include "dbus.h"
3dfc9763
LP		 40#include "dbus-manager.h"
41#include "def.h"
eee8b7ab 42#include "emergency-action.h"
3dfc9763 43#include "env-util.h"
57b7a260 44#include "exit-status.h"
3ffd4af2 45#include "fd-util.h"
3dfc9763 46#include "fdset.h"
718db961 47#include "fileio.h"
f97b34a6 48#include "format-util.h"
f4f15635 49#include "fs-util.h"
3dfc9763
LP		 50#include "hostname-setup.h"
51#include "ima-setup.h"
52#include "killall.h"
53#include "kmod-setup.h"
d7b8eec7 54#include "load-fragment.h"
3dfc9763 55#include "log.h"
b6e66135 56#include "loopback-setup.h"
b6e66135 57#include "machine-id-setup.h"
3dfc9763
LP		 58#include "manager.h"
59#include "missing.h"
60#include "mount-setup.h"
d58ad743 61#include "os-util.h"
3dfc9763 62#include "pager.h"
6bedfcbb 63#include "parse-util.h"
7d5ceb64 64#include "path-util.h"
4e731273 65#include "proc-cmdline.h"
3dfc9763 66#include "process-util.h"
8869a0b4 67#include "raw-clone.h"
78f22b97 68#include "rlimit-util.h"
349cc4a5 69#if HAVE_SECCOMP
83f12b27
FS		 70#include "seccomp-util.h"
71#endif
b6e66135 72#include "selinux-setup.h"
3dfc9763
LP		 73#include "selinux-util.h"
74#include "signal-util.h"
ffbd2c4d 75#include "smack-setup.h"
3dfc9763 76#include "special.h"
8fcde012 77#include "stat-util.h"
15a5e950 78#include "stdio-util.h"
3dfc9763
LP		 79#include "strv.h"
80#include "switch-root.h"
81#include "terminal-util.h"
8612da97 82#include "umask-util.h"
b1d4f8e1 83#include "user-util.h"
9ce17593 84#include "util.h"
3dfc9763
LP		 85#include "virt.h"
86#include "watchdog.h"
b6e66135 87
f170852a
LP		 88static enum {
89 ACTION_RUN,
e965d56d 90 ACTION_HELP,
9ba0bc4e 91 ACTION_VERSION,
e537352b 92 ACTION_TEST,
bbc1acab
YW		 93 ACTION_DUMP_CONFIGURATION_ITEMS,
94 ACTION_DUMP_BUS_PROPERTIES,
fa0f4d8a 95} arg_action = ACTION_RUN;
fa0f4d8a 96static char *arg_default_unit = NULL;
463d0d15 97static bool arg_system = false;
fa0f4d8a 98static bool arg_dump_core = true;
fa0f4d8a 99static int arg_crash_chvt = -1;
b9e74c39
LP		 100static bool arg_crash_shell = false;
101static bool arg_crash_reboot = false;
7d5ceb64 102static char *arg_confirm_spawn = NULL;
b6e2f329 103static ShowStatus arg_show_status = _SHOW_STATUS_UNSET;
bf4df7c3 104static bool arg_switched_root = false;
ea4b98e6 105static bool arg_no_pager = false;
2a12e32e 106static bool arg_service_watchdogs = true;
0c85a4f3 107static char ***arg_join_controllers = NULL;
706343f4 108static ExecOutput arg_default_std_output = EXEC_OUTPUT_JOURNAL;
0a494f1f 109static ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT;
1f19a534
OS		 110static usec_t arg_default_restart_usec = DEFAULT_RESTART_USEC;
111static usec_t arg_default_timeout_start_usec = DEFAULT_TIMEOUT_USEC;
112static usec_t arg_default_timeout_stop_usec = DEFAULT_TIMEOUT_USEC;
3f41e1e5
LN		 113static usec_t arg_default_start_limit_interval = DEFAULT_START_LIMIT_INTERVAL;
114static unsigned arg_default_start_limit_burst = DEFAULT_START_LIMIT_BURST;
e96d6be7
LP		 115static usec_t arg_runtime_watchdog = 0;
116static usec_t arg_shutdown_watchdog = 10 * USEC_PER_MINUTE;
8a2c1fbf 117static char *arg_watchdog_device = NULL;
97d0e5f8 118static char **arg_default_environment = NULL;
517d56b1 119static struct rlimit *arg_default_rlimit[_RLIMIT_MAX] = {};
a103496c 120static uint64_t arg_capability_bounding_set = CAP_ALL;
39362f6f 121static bool arg_no_new_privs = false;
3a43da28 122static nsec_t arg_timer_slack_nsec = NSEC_INFINITY;
bd8f585b 123static usec_t arg_default_timer_accuracy_usec = 1 * USEC_PER_MINUTE;
d3b1c508
LP		 124static Set* arg_syscall_archs = NULL;
125static FILE* arg_serialization = NULL;
085afe36 126static bool arg_default_cpu_accounting = false;
13c31542 127static bool arg_default_io_accounting = false;
377bfd2d 128static bool arg_default_ip_accounting = false;
085afe36 129static bool arg_default_blockio_accounting = false;
444d5863 130static bool arg_default_memory_accounting = MEMORY_ACCOUNTING_DEFAULT;
9ded9cd1 131static bool arg_default_tasks_accounting = true;
79baeeb9 132static uint64_t arg_default_tasks_max = UINT64_MAX;
ee48dbd5 133static sd_id128_t arg_machine_id = {};
ae8c7939 134static EmergencyAction arg_cad_burst_action = EMERGENCY_ACTION_REBOOT_FORCE;
4fc935ca 135
848e863a 136_noreturn_ static void freeze_or_reboot(void) {
b9e74c39
LP		 137
138 if (arg_crash_reboot) {
139 log_notice("Rebooting in 10s...");
140 (void) sleep(10);
141
142 log_notice("Rebooting now...");
143 (void) reboot(RB_AUTOBOOT);
144 log_emergency_errno(errno, "Failed to reboot: %m");
145 }
146
147 log_emergency("Freezing execution.");
148 freeze();
149}
150
848e863a 151_noreturn_ static void crash(int sig) {
7d06dad9
MS		 152 struct sigaction sa;
153 pid_t pid;
97c4f35c 154
df0ff127 155 if (getpid_cached() != 1)
abb26902 156 /* Pass this on immediately, if this is not PID 1 */
92ca4cac 157 (void) raise(sig);
abb26902 158 else if (!arg_dump_core)
4104970e 159 log_emergency("Caught <%s>, not dumping core.", signal_to_string(sig));
97c4f35c 160 else {
7d06dad9 161 sa = (struct sigaction) {
189d5bac 162 .sa_handler = nop_signal_handler,
b92bea5d
ZJS		 163 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
164 };
97c4f35c 165
6f5e3f35 166 /* We want to wait for the core process, hence let's enable SIGCHLD */
92ca4cac 167 (void) sigaction(SIGCHLD, &sa, NULL);
6f5e3f35 168
8869a0b4 169 pid = raw_clone(SIGCHLD);
e62d8c39 170 if (pid < 0)
56f64d95 171 log_emergency_errno(errno, "Caught <%s>, cannot fork for core dump: %m", signal_to_string(sig));
97c4f35c 172 else if (pid == 0) {
97c4f35c 173 /* Enable default signal handler for core dump */
15a90032 174
92ca4cac
LP		 175 sa = (struct sigaction) {
176 .sa_handler = SIG_DFL,
177 };
178 (void) sigaction(sig, &sa, NULL);
97c4f35c 179
15a90032
LP		 180 /* Don't limit the coredump size */
181 (void) setrlimit(RLIMIT_CORE, &RLIMIT_MAKE_CONST(RLIM_INFINITY));
97c4f35c
LP		 182
183 /* Just to be sure... */
e62d9b81 184 (void) chdir("/");
97c4f35c
LP		 185
186 /* Raise the signal again */
ee05e779 187 pid = raw_getpid();
92ca4cac 188 (void) kill(pid, sig); /* raise() would kill the parent */
97c4f35c
LP		 189
190 assert_not_reached("We shouldn't be here...");
92ca4cac 191 _exit(EXIT_FAILURE);
4fc935ca 192 } else {
8e12a6ae
LP		 193 siginfo_t status;
194 int r;
4fc935ca
LP		 195
196 /* Order things nicely. */
e62d8c39
ZJS		 197 r = wait_for_terminate(pid, &status);
198 if (r < 0)
da927ba9 199 log_emergency_errno(r, "Caught <%s>, waitpid() failed: %m", signal_to_string(sig));
8e12a6ae 200 else if (status.si_code != CLD_DUMPED)
ee05e779
ZJS		 201 log_emergency("Caught <%s>, core dump failed (child "PID_FMT", code=%s, status=%i/%s).",
202 signal_to_string(sig),
203 pid, sigchld_code_to_string(status.si_code),
204 status.si_status,
205 strna(status.si_code == CLD_EXITED
38107f5a 206 ? exit_status_to_string(status.si_status, EXIT_STATUS_MINIMAL)
ee05e779 207 : signal_to_string(status.si_status)));
4fc935ca 208 else
4104970e 209 log_emergency("Caught <%s>, dumped core as pid "PID_FMT".", signal_to_string(sig), pid);
97c4f35c
LP		 210 }
211 }
212
b9e74c39 213 if (arg_crash_chvt >= 0)
92ca4cac 214 (void) chvt(arg_crash_chvt);
601f6a1e 215
7d06dad9
MS		 216 sa = (struct sigaction) {
217 .sa_handler = SIG_IGN,
218 .sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART,
219 };
220
221 /* Let the kernel reap children for us */
222 (void) sigaction(SIGCHLD, &sa, NULL);
8c43883a 223
7d06dad9 224 if (arg_crash_shell) {
b9e74c39 225 log_notice("Executing crash shell in 10s...");
92ca4cac 226 (void) sleep(10);
4fc935ca 227
8869a0b4 228 pid = raw_clone(SIGCHLD);
cd3bd60a 229 if (pid < 0)
56f64d95 230 log_emergency_errno(errno, "Failed to fork off crash shell: %m");
6f5e3f35 231 else if (pid == 0) {
b9e74c39 232 (void) setsid();
92ca4cac
LP		 233 (void) make_console_stdio();
234 (void) execle("/bin/sh", "/bin/sh", NULL, environ);
6f5e3f35 235
ee05e779 236 log_emergency_errno(errno, "execle() failed: %m");
92ca4cac 237 _exit(EXIT_FAILURE);
b9e74c39
LP		 238 } else {
239 log_info("Spawned crash shell as PID "PID_FMT".", pid);
4cf0b03b 240 (void) wait_for_terminate(pid, NULL);
b9e74c39 241 }
4fc935ca
LP		 242 }
243
b9e74c39 244 freeze_or_reboot();
97c4f35c
LP		 245}
246
247static void install_crash_handler(void) {
297d563d 248 static const struct sigaction sa = {
b92bea5d 249 .sa_handler = crash,
297d563d 250 .sa_flags = SA_NODEFER, /* So that we can raise the signal again from the signal handler */
b92bea5d 251 };
297d563d 252 int r;
97c4f35c 253
297d563d
LP		 254 /* We ignore the return value here, since, we don't mind if we
255 * cannot set up a crash handler */
256 r = sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1);
257 if (r < 0)
258 log_debug_errno(r, "I had trouble setting up the crash handler, ignoring: %m");
97c4f35c 259}
f170852a 260
56d96fc0
LP		 261static int console_setup(void) {
262 _cleanup_close_ int tty_fd = -1;
263 int r;
80876c20 264
512947d4 265 tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);
23bbb0de
MS		 266 if (tty_fd < 0)
267 return log_error_errno(tty_fd, "Failed to open /dev/console: %m");
80876c20 268
56d96fc0
LP		 269 /* We don't want to force text mode. plymouth may be showing
270 * pictures already from initrd. */
512947d4 271 r = reset_terminal_fd(tty_fd, false);
23bbb0de
MS		 272 if (r < 0)
273 return log_error_errno(r, "Failed to reset /dev/console: %m");
843d2643 274
56d96fc0 275 return 0;
80876c20
LP		 276}
277
b9e74c39
LP		 278static int parse_crash_chvt(const char *value) {
279 int b;
280
281 if (safe_atoi(value, &arg_crash_chvt) >= 0)
282 return 0;
283
284 b = parse_boolean(value);
285 if (b < 0)
286 return b;
287
288 if (b > 0)
289 arg_crash_chvt = 0; /* switch to where kmsg goes */
290 else
291 arg_crash_chvt = -1; /* turn off switching */
292
293 return 0;
294}
295
7d5ceb64
FB		 296static int parse_confirm_spawn(const char *value, char **console) {
297 char *s;
298 int r;
299
300 r = value ? parse_boolean(value) : 1;
301 if (r == 0) {
302 *console = NULL;
303 return 0;
304 }
305
306 if (r > 0) /* on with default tty */
307 s = strdup("/dev/console");
308 else if (is_path(value)) /* on with fully qualified path */
309 s = strdup(value);
310 else /* on with only a tty file name, not a fully qualified path */
311 s = strjoin("/dev/", value);
312 if (!s)
313 return -ENOMEM;
314 *console = s;
315 return 0;
316}
317
ee48dbd5 318static int set_machine_id(const char *m) {
e042eab7 319 sd_id128_t t;
8b26cdbd 320 assert(m);
ee48dbd5 321
e042eab7 322 if (sd_id128_from_string(m, &t) < 0)
ee48dbd5
NC		 323 return -EINVAL;
324
e042eab7 325 if (sd_id128_is_null(t))
ee48dbd5
NC		 326 return -EINVAL;
327
e042eab7 328 arg_machine_id = t;
ee48dbd5
NC		 329 return 0;
330}
331
96287a49 332static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
f170852a 333
059cb385 334 int r;
f170852a 335
059cb385 336 assert(key);
5192bd19 337
1d84ad94 338 if (STR_IN_SET(key, "systemd.unit", "rd.systemd.unit")) {
bf4df7c3 339
1d84ad94
LP		 340 if (proc_cmdline_value_missing(key, value))
341 return 0;
bf4df7c3 342
1d84ad94
LP		 343 if (!unit_name_is_valid(value, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE))
344 log_warning("Unit name specified on %s= is not valid, ignoring: %s", key, value);
345 else if (in_initrd() == !!startswith(key, "rd.")) {
346 if (free_and_strdup(&arg_default_unit, value) < 0)
347 return log_oom();
348 }
f170852a 349
1d84ad94 350 } else if (proc_cmdline_key_streq(key, "systemd.dump_core")) {
4fc935ca 351
1d84ad94 352 r = value ? parse_boolean(value) : true;
fb472900 353 if (r < 0)
059cb385 354 log_warning("Failed to parse dump core switch %s. Ignoring.", value);
4fc935ca 355 else
fa0f4d8a 356 arg_dump_core = r;
4fc935ca 357
1d84ad94 358 } else if (proc_cmdline_key_streq(key, "systemd.crash_chvt")) {
b9e74c39 359
1d84ad94
LP		 360 if (!value)
361 arg_crash_chvt = 0; /* turn on */
362 else if (parse_crash_chvt(value) < 0)
b9e74c39
LP		 363 log_warning("Failed to parse crash chvt switch %s. Ignoring.", value);
364
1d84ad94 365 } else if (proc_cmdline_key_streq(key, "systemd.crash_shell")) {
4fc935ca 366
1d84ad94 367 r = value ? parse_boolean(value) : true;
fb472900 368 if (r < 0)
059cb385 369 log_warning("Failed to parse crash shell switch %s. Ignoring.", value);
4fc935ca 370 else
fa0f4d8a 371 arg_crash_shell = r;
5e7ee61c 372
1d84ad94 373 } else if (proc_cmdline_key_streq(key, "systemd.crash_reboot")) {
5e7ee61c 374
1d84ad94 375 r = value ? parse_boolean(value) : true;
b9e74c39
LP		 376 if (r < 0)
377 log_warning("Failed to parse crash reboot switch %s. Ignoring.", value);
5e7ee61c 378 else
b9e74c39 379 arg_crash_reboot = r;
5e7ee61c 380
1d84ad94
LP		 381 } else if (proc_cmdline_key_streq(key, "systemd.confirm_spawn")) {
382 char *s;
7d5ceb64 383
1d84ad94 384 r = parse_confirm_spawn(value, &s);
059cb385 385 if (r < 0)
7d5ceb64 386 log_warning_errno(r, "Failed to parse confirm_spawn switch %s. Ignoring.", value);
1d84ad94
LP		 387 else {
388 free(arg_confirm_spawn);
389 arg_confirm_spawn = s;
390 }
601f6a1e 391
2a12e32e
JK		 392 } else if (proc_cmdline_key_streq(key, "systemd.service_watchdogs")) {
393
394 r = value ? parse_boolean(value) : true;
395 if (r < 0)
396 log_warning("Failed to parse service watchdog switch %s. Ignoring.", value);
397 else
398 arg_service_watchdogs = r;
399
1d84ad94 400 } else if (proc_cmdline_key_streq(key, "systemd.show_status")) {
9e58ff9c 401
1d84ad94
LP		 402 if (value) {
403 r = parse_show_status(value, &arg_show_status);
404 if (r < 0)
405 log_warning("Failed to parse show status switch %s. Ignoring.", value);
406 } else
407 arg_show_status = SHOW_STATUS_YES;
059cb385 408
1d84ad94
LP		 409 } else if (proc_cmdline_key_streq(key, "systemd.default_standard_output")) {
410
411 if (proc_cmdline_value_missing(key, value))
412 return 0;
0a494f1f 413
059cb385 414 r = exec_output_from_string(value);
fb472900 415 if (r < 0)
059cb385 416 log_warning("Failed to parse default standard output switch %s. Ignoring.", value);
0a494f1f
LP		 417 else
418 arg_default_std_output = r;
0a494f1f 419
1d84ad94
LP		 420 } else if (proc_cmdline_key_streq(key, "systemd.default_standard_error")) {
421
422 if (proc_cmdline_value_missing(key, value))
423 return 0;
059cb385
LP		 424
425 r = exec_output_from_string(value);
fb472900 426 if (r < 0)
059cb385 427 log_warning("Failed to parse default standard error switch %s. Ignoring.", value);
0a494f1f
LP		 428 else
429 arg_default_std_error = r;
9e7c5357 430
1d84ad94
LP		 431 } else if (streq(key, "systemd.setenv")) {
432
433 if (proc_cmdline_value_missing(key, value))
434 return 0;
059cb385
LP		 435
436 if (env_assignment_is_valid(value)) {
e21fea24
KS		 437 char **env;
438
059cb385 439 env = strv_env_set(arg_default_environment, value);
1d84ad94
LP		 440 if (!env)
441 return log_oom();
442
443 arg_default_environment = env;
e21fea24 444 } else
059cb385 445 log_warning("Environment variable name '%s' is not valid. Ignoring.", value);
9e58ff9c 446
1d84ad94
LP		 447 } else if (proc_cmdline_key_streq(key, "systemd.machine_id")) {
448
449 if (proc_cmdline_value_missing(key, value))
450 return 0;
451
452 r = set_machine_id(value);
453 if (r < 0)
454 log_warning("MachineID '%s' is not valid. Ignoring.", value);
ee48dbd5 455
1d84ad94
LP		 456 } else if (proc_cmdline_key_streq(key, "systemd.default_timeout_start_sec")) {
457
458 if (proc_cmdline_value_missing(key, value))
459 return 0;
460
461 r = parse_sec(value, &arg_default_timeout_start_usec);
462 if (r < 0)
463 log_warning_errno(r, "Failed to parse default start timeout: %s, ignoring.", value);
464
465 if (arg_default_timeout_start_usec <= 0)
466 arg_default_timeout_start_usec = USEC_INFINITY;
ee48dbd5 467
8a2c1fbf
EJ		 468 } else if (proc_cmdline_key_streq(key, "systemd.watchdog_device")) {
469
470 if (proc_cmdline_value_missing(key, value))
471 return 0;
472
473 parse_path_argument_and_warn(value, false, &arg_watchdog_device);
474
059cb385 475 } else if (streq(key, "quiet") && !value) {
d7b15e0a 476
b6e2f329 477 if (arg_show_status == _SHOW_STATUS_UNSET)
d450b6f2 478 arg_show_status = SHOW_STATUS_AUTO;
059cb385
LP		 479
480 } else if (streq(key, "debug") && !value) {
d7b15e0a 481
1de1c9c3
LP		 482 /* Note that log_parse_environment() handles 'debug'
483 * too, and sets the log level to LOG_DEBUG. */
d7b15e0a 484
75f86906 485 if (detect_container() > 0)
b2103dcc 486 log_set_target(LOG_TARGET_CONSOLE);
059cb385 487
dcd61450 488 } else if (!value) {
e2c9a131 489 const char *target;
f170852a
LP		 490
491 /* SysV compatibility */
e2c9a131
EV		 492 target = runlevel_to_target(key);
493 if (target)
494 return free_and_strdup(&arg_default_unit, target);
f170852a
LP		 495 }
496
497 return 0;
498}
499
e8e581bf
ZJS		 500#define DEFINE_SETTER(name, func, descr) \
501 static int name(const char *unit, \
502 const char *filename, \
503 unsigned line, \
504 const char *section, \
71a61510 505 unsigned section_line, \
e8e581bf
ZJS		 506 const char *lvalue, \
507 int ltype, \
508 const char *rvalue, \
509 void *data, \
510 void *userdata) { \
511 \
512 int r; \
513 \
514 assert(filename); \
515 assert(lvalue); \
516 assert(rvalue); \
517 \
518 r = func(rvalue); \
519 if (r < 0) \
d1cefe0a
LP		 520 log_syntax(unit, LOG_ERR, filename, line, r, \
521 "Invalid " descr "'%s': %m", \
522 rvalue); \
e8e581bf
ZJS		 523 \
524 return 0; \
525 }
487393e9 526
e8e581bf
ZJS		 527DEFINE_SETTER(config_parse_level2, log_set_max_level_from_string, "log level")
528DEFINE_SETTER(config_parse_target, log_set_target_from_string, "target")
529DEFINE_SETTER(config_parse_color, log_show_color_from_string, "color" )
530DEFINE_SETTER(config_parse_location, log_show_location_from_string, "location")
487393e9 531
4d7213b2
LP		 532static int config_parse_cpu_affinity2(
533 const char *unit,
534 const char *filename,
535 unsigned line,
536 const char *section,
537 unsigned section_line,
538 const char *lvalue,
539 int ltype,
540 const char *rvalue,
541 void *data,
542 void *userdata) {
487393e9 543
4b40bc38 544 _cleanup_cpu_free_ cpu_set_t *c = NULL;
f5c72b73 545 int ncpus;
487393e9 546
765d143b 547 ncpus = parse_cpu_set_and_warn(rvalue, &c, unit, filename, line, lvalue);
f5c72b73
FB		 548 if (ncpus < 0)
549 return ncpus;
487393e9 550
f5c72b73 551 if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0)
25f027c5 552 log_warning_errno(errno, "Failed to set CPU affinity: %m");
487393e9 553
487393e9
LP		 554 return 0;
555}
556
4d7213b2
LP		 557static int config_parse_show_status(
558 const char* unit,
559 const char *filename,
560 unsigned line,
561 const char *section,
562 unsigned section_line,
563 const char *lvalue,
564 int ltype,
565 const char *rvalue,
566 void *data,
567 void *userdata) {
568
569 int k;
570 ShowStatus *b = data;
571
572 assert(filename);
573 assert(lvalue);
574 assert(rvalue);
575 assert(data);
576
577 k = parse_show_status(rvalue, b);
578 if (k < 0) {
12ca818f 579 log_syntax(unit, LOG_ERR, filename, line, k, "Failed to parse show status setting, ignoring: %s", rvalue);
4d7213b2
LP		 580 return 0;
581 }
582
583 return 0;
584}
585
5db98187
LP		 586static int config_parse_output_restricted(
587 const char* unit,
588 const char *filename,
589 unsigned line,
590 const char *section,
591 unsigned section_line,
592 const char *lvalue,
593 int ltype,
594 const char *rvalue,
595 void *data,
596 void *userdata) {
597
598 ExecOutput t, *eo = data;
599
600 assert(filename);
601 assert(lvalue);
602 assert(rvalue);
603 assert(data);
604
605 t = exec_output_from_string(rvalue);
606 if (t < 0) {
607 log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse output type, ignoring: %s", rvalue);
608 return 0;
609 }
610
611 if (IN_SET(t, EXEC_OUTPUT_SOCKET, EXEC_OUTPUT_NAMED_FD, EXEC_OUTPUT_FILE)) {
612 log_syntax(unit, LOG_ERR, filename, line, 0, "Standard output types socket, fd:, file: are not supported as defaults, ignoring: %s", rvalue);
613 return 0;
614 }
615
616 *eo = t;
617 return 0;
618}
619
b9e74c39
LP		 620static int config_parse_crash_chvt(
621 const char* unit,
622 const char *filename,
623 unsigned line,
624 const char *section,
625 unsigned section_line,
626 const char *lvalue,
627 int ltype,
628 const char *rvalue,
629 void *data,
630 void *userdata) {
631
632 int r;
633
634 assert(filename);
635 assert(lvalue);
636 assert(rvalue);
b9e74c39
LP		 637
638 r = parse_crash_chvt(rvalue);
639 if (r < 0) {
640 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse CrashChangeVT= setting, ignoring: %s", rvalue);
641 return 0;
642 }
643
644 return 0;
645}
646
487393e9
LP		 647static int parse_config_file(void) {
648
f975e971 649 const ConfigTableItem items[] = {
d3b1c508
LP		 650 { "Manager", "LogLevel", config_parse_level2, 0, NULL },
651 { "Manager", "LogTarget", config_parse_target, 0, NULL },
652 { "Manager", "LogColor", config_parse_color, 0, NULL },
653 { "Manager", "LogLocation", config_parse_location, 0, NULL },
654 { "Manager", "DumpCore", config_parse_bool, 0, &arg_dump_core },
b9e74c39
LP		 655 { "Manager", "CrashChVT", /* legacy */ config_parse_crash_chvt, 0, NULL },
656 { "Manager", "CrashChangeVT", config_parse_crash_chvt, 0, NULL },
d3b1c508 657 { "Manager", "CrashShell", config_parse_bool, 0, &arg_crash_shell },
b9e74c39 658 { "Manager", "CrashReboot", config_parse_bool, 0, &arg_crash_reboot },
d3b1c508 659 { "Manager", "ShowStatus", config_parse_show_status, 0, &arg_show_status },
d3b1c508
LP		 660 { "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, NULL },
661 { "Manager", "JoinControllers", config_parse_join_controllers, 0, &arg_join_controllers },
662 { "Manager", "RuntimeWatchdogSec", config_parse_sec, 0, &arg_runtime_watchdog },
663 { "Manager", "ShutdownWatchdogSec", config_parse_sec, 0, &arg_shutdown_watchdog },
8a2c1fbf 664 { "Manager", "WatchdogDevice", config_parse_path, 0, &arg_watchdog_device },
a103496c 665 { "Manager", "CapabilityBoundingSet", config_parse_capability_set, 0, &arg_capability_bounding_set },
39362f6f 666 { "Manager", "NoNewPrivileges", config_parse_bool, 0, &arg_no_new_privs },
349cc4a5 667#if HAVE_SECCOMP
d3b1c508 668 { "Manager", "SystemCallArchitectures", config_parse_syscall_archs, 0, &arg_syscall_archs },
89fffa27 669#endif
d3b1c508 670 { "Manager", "TimerSlackNSec", config_parse_nsec, 0, &arg_timer_slack_nsec },
bd8f585b 671 { "Manager", "DefaultTimerAccuracySec", config_parse_sec, 0, &arg_default_timer_accuracy_usec },
5db98187
LP		 672 { "Manager", "DefaultStandardOutput", config_parse_output_restricted,0, &arg_default_std_output },
673 { "Manager", "DefaultStandardError", config_parse_output_restricted,0, &arg_default_std_error },
d3b1c508
LP		 674 { "Manager", "DefaultTimeoutStartSec", config_parse_sec, 0, &arg_default_timeout_start_usec },
675 { "Manager", "DefaultTimeoutStopSec", config_parse_sec, 0, &arg_default_timeout_stop_usec },
676 { "Manager", "DefaultRestartSec", config_parse_sec, 0, &arg_default_restart_usec },
f0367da7
LP		 677 { "Manager", "DefaultStartLimitInterval", config_parse_sec, 0, &arg_default_start_limit_interval }, /* obsolete alias */
678 { "Manager", "DefaultStartLimitIntervalSec",config_parse_sec, 0, &arg_default_start_limit_interval },
d3b1c508
LP		 679 { "Manager", "DefaultStartLimitBurst", config_parse_unsigned, 0, &arg_default_start_limit_burst },
680 { "Manager", "DefaultEnvironment", config_parse_environ, 0, &arg_default_environment },
4f424df7
LP		 681 { "Manager", "DefaultLimitCPU", config_parse_rlimit, RLIMIT_CPU, arg_default_rlimit },
682 { "Manager", "DefaultLimitFSIZE", config_parse_rlimit, RLIMIT_FSIZE, arg_default_rlimit },
683 { "Manager", "DefaultLimitDATA", config_parse_rlimit, RLIMIT_DATA, arg_default_rlimit },
684 { "Manager", "DefaultLimitSTACK", config_parse_rlimit, RLIMIT_STACK, arg_default_rlimit },
685 { "Manager", "DefaultLimitCORE", config_parse_rlimit, RLIMIT_CORE, arg_default_rlimit },
686 { "Manager", "DefaultLimitRSS", config_parse_rlimit, RLIMIT_RSS, arg_default_rlimit },
687 { "Manager", "DefaultLimitNOFILE", config_parse_rlimit, RLIMIT_NOFILE, arg_default_rlimit },
688 { "Manager", "DefaultLimitAS", config_parse_rlimit, RLIMIT_AS, arg_default_rlimit },
689 { "Manager", "DefaultLimitNPROC", config_parse_rlimit, RLIMIT_NPROC, arg_default_rlimit },
690 { "Manager", "DefaultLimitMEMLOCK", config_parse_rlimit, RLIMIT_MEMLOCK, arg_default_rlimit },
691 { "Manager", "DefaultLimitLOCKS", config_parse_rlimit, RLIMIT_LOCKS, arg_default_rlimit },
692 { "Manager", "DefaultLimitSIGPENDING", config_parse_rlimit, RLIMIT_SIGPENDING, arg_default_rlimit },
693 { "Manager", "DefaultLimitMSGQUEUE", config_parse_rlimit, RLIMIT_MSGQUEUE, arg_default_rlimit },
694 { "Manager", "DefaultLimitNICE", config_parse_rlimit, RLIMIT_NICE, arg_default_rlimit },
695 { "Manager", "DefaultLimitRTPRIO", config_parse_rlimit, RLIMIT_RTPRIO, arg_default_rlimit },
696 { "Manager", "DefaultLimitRTTIME", config_parse_rlimit, RLIMIT_RTTIME, arg_default_rlimit },
085afe36 697 { "Manager", "DefaultCPUAccounting", config_parse_bool, 0, &arg_default_cpu_accounting },
13c31542 698 { "Manager", "DefaultIOAccounting", config_parse_bool, 0, &arg_default_io_accounting },
377bfd2d 699 { "Manager", "DefaultIPAccounting", config_parse_bool, 0, &arg_default_ip_accounting },
085afe36
LP		 700 { "Manager", "DefaultBlockIOAccounting", config_parse_bool, 0, &arg_default_blockio_accounting },
701 { "Manager", "DefaultMemoryAccounting", config_parse_bool, 0, &arg_default_memory_accounting },
03a7b521 702 { "Manager", "DefaultTasksAccounting", config_parse_bool, 0, &arg_default_tasks_accounting },
0af20ea2 703 { "Manager", "DefaultTasksMax", config_parse_tasks_max, 0, &arg_default_tasks_max },
ae8c7939 704 { "Manager", "CtrlAltDelBurstAction", config_parse_emergency_action, 0, &arg_cad_burst_action },
d3b1c508 705 {}
487393e9
LP		 706 };
707
1b907b5c 708 const char *fn, *conf_dirs_nulstr;
487393e9 709
463d0d15 710 fn = arg_system ?
75eb6154
LP		 711 PKGSYSCONFDIR "/system.conf" :
712 PKGSYSCONFDIR "/user.conf";
713
463d0d15 714 conf_dirs_nulstr = arg_system ?
75eb6154
LP		 715 CONF_PATHS_NULSTR("systemd/system.conf.d") :
716 CONF_PATHS_NULSTR("systemd/user.conf.d");
717
bcde742e 718 (void) config_parse_many_nulstr(fn, conf_dirs_nulstr, "Manager\0", config_item_table_lookup, items, CONFIG_PARSE_WARN, NULL);
36c16a7c
LP		 719
720 /* Traditionally "0" was used to turn off the default unit timeouts. Fix this up so that we used USEC_INFINITY
721 * like everywhere else. */
722 if (arg_default_timeout_start_usec <= 0)
723 arg_default_timeout_start_usec = USEC_INFINITY;
724 if (arg_default_timeout_stop_usec <= 0)
725 arg_default_timeout_stop_usec = USEC_INFINITY;
487393e9 726
487393e9
LP		 727 return 0;
728}
729
85cb4151 730static void set_manager_defaults(Manager *m) {
06af2a04
TB		 731
732 assert(m);
733
734 m->default_timer_accuracy_usec = arg_default_timer_accuracy_usec;
735 m->default_std_output = arg_default_std_output;
736 m->default_std_error = arg_default_std_error;
737 m->default_timeout_start_usec = arg_default_timeout_start_usec;
738 m->default_timeout_stop_usec = arg_default_timeout_stop_usec;
739 m->default_restart_usec = arg_default_restart_usec;
740 m->default_start_limit_interval = arg_default_start_limit_interval;
741 m->default_start_limit_burst = arg_default_start_limit_burst;
742 m->default_cpu_accounting = arg_default_cpu_accounting;
13c31542 743 m->default_io_accounting = arg_default_io_accounting;
377bfd2d 744 m->default_ip_accounting = arg_default_ip_accounting;
06af2a04
TB		 745 m->default_blockio_accounting = arg_default_blockio_accounting;
746 m->default_memory_accounting = arg_default_memory_accounting;
03a7b521 747 m->default_tasks_accounting = arg_default_tasks_accounting;
0af20ea2 748 m->default_tasks_max = arg_default_tasks_max;
06af2a04
TB		 749
750 manager_set_default_rlimits(m, arg_default_rlimit);
751 manager_environment_add(m, NULL, arg_default_environment);
752}
753
7b46fc6a
LP		 754static void set_manager_settings(Manager *m) {
755
756 assert(m);
757
758 m->confirm_spawn = arg_confirm_spawn;
2a12e32e 759 m->service_watchdogs = arg_service_watchdogs;
7b46fc6a
LP		 760 m->runtime_watchdog = arg_runtime_watchdog;
761 m->shutdown_watchdog = arg_shutdown_watchdog;
762 m->cad_burst_action = arg_cad_burst_action;
763
764 manager_set_show_status(m, arg_show_status);
765}
766
f170852a 767static int parse_argv(int argc, char *argv[]) {
f170852a
LP		 768 enum {
769 ARG_LOG_LEVEL = 0x100,
770 ARG_LOG_TARGET,
bbe63281
LP		 771 ARG_LOG_COLOR,
772 ARG_LOG_LOCATION,
2f198e2f 773 ARG_UNIT,
edb9aaa8 774 ARG_SYSTEM,
af2d49f7 775 ARG_USER,
e537352b 776 ARG_TEST,
b87c2aa6 777 ARG_NO_PAGER,
9ba0bc4e 778 ARG_VERSION,
80876c20 779 ARG_DUMP_CONFIGURATION_ITEMS,
bbc1acab 780 ARG_DUMP_BUS_PROPERTIES,
9e58ff9c 781 ARG_DUMP_CORE,
b9e74c39 782 ARG_CRASH_CHVT,
9e58ff9c 783 ARG_CRASH_SHELL,
b9e74c39 784 ARG_CRASH_REBOOT,
a16e1123 785 ARG_CONFIRM_SPAWN,
9e58ff9c 786 ARG_SHOW_STATUS,
4288f619 787 ARG_DESERIALIZE,
2660882b 788 ARG_SWITCHED_ROOT,
0a494f1f 789 ARG_DEFAULT_STD_OUTPUT,
ee48dbd5 790 ARG_DEFAULT_STD_ERROR,
2a12e32e
JK		 791 ARG_MACHINE_ID,
792 ARG_SERVICE_WATCHDOGS,
f170852a
LP		 793 };
794
795 static const struct option options[] = {
a16e1123
LP		 796 { "log-level", required_argument, NULL, ARG_LOG_LEVEL },
797 { "log-target", required_argument, NULL, ARG_LOG_TARGET },
bbe63281
LP		 798 { "log-color", optional_argument, NULL, ARG_LOG_COLOR },
799 { "log-location", optional_argument, NULL, ARG_LOG_LOCATION },
2f198e2f 800 { "unit", required_argument, NULL, ARG_UNIT },
edb9aaa8 801 { "system", no_argument, NULL, ARG_SYSTEM },
af2d49f7 802 { "user", no_argument, NULL, ARG_USER },
a16e1123 803 { "test", no_argument, NULL, ARG_TEST },
b87c2aa6 804 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
a16e1123 805 { "help", no_argument, NULL, 'h' },
9ba0bc4e 806 { "version", no_argument, NULL, ARG_VERSION },
a16e1123 807 { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
bbc1acab 808 { "dump-bus-properties", no_argument, NULL, ARG_DUMP_BUS_PROPERTIES },
a5d87bf0 809 { "dump-core", optional_argument, NULL, ARG_DUMP_CORE },
b9e74c39 810 { "crash-chvt", required_argument, NULL, ARG_CRASH_CHVT },
a5d87bf0 811 { "crash-shell", optional_argument, NULL, ARG_CRASH_SHELL },
b9e74c39 812 { "crash-reboot", optional_argument, NULL, ARG_CRASH_REBOOT },
a5d87bf0 813 { "confirm-spawn", optional_argument, NULL, ARG_CONFIRM_SPAWN },
6e98720f 814 { "show-status", optional_argument, NULL, ARG_SHOW_STATUS },
a16e1123 815 { "deserialize", required_argument, NULL, ARG_DESERIALIZE },
2660882b 816 { "switched-root", no_argument, NULL, ARG_SWITCHED_ROOT },
0a494f1f
LP		 817 { "default-standard-output", required_argument, NULL, ARG_DEFAULT_STD_OUTPUT, },
818 { "default-standard-error", required_argument, NULL, ARG_DEFAULT_STD_ERROR, },
ee48dbd5 819 { "machine-id", required_argument, NULL, ARG_MACHINE_ID },
2a12e32e 820 { "service-watchdogs", required_argument, NULL, ARG_SERVICE_WATCHDOGS },
fb472900 821 {}
f170852a
LP		 822 };
823
824 int c, r;
825
826 assert(argc >= 1);
827 assert(argv);
828
df0ff127 829 if (getpid_cached() == 1)
b770165a
LP		 830 opterr = 0;
831
099663ff 832 while ((c = getopt_long(argc, argv, "hDbsz:", options, NULL)) >= 0)
f170852a
LP		 833
834 switch (c) {
835
836 case ARG_LOG_LEVEL:
fb472900
ZJS		 837 r = log_set_max_level_from_string(optarg);
838 if (r < 0) {
f170852a
LP		 839 log_error("Failed to parse log level %s.", optarg);
840 return r;
841 }
842
843 break;
844
845 case ARG_LOG_TARGET:
fb472900
ZJS		 846 r = log_set_target_from_string(optarg);
847 if (r < 0) {
f170852a
LP		 848 log_error("Failed to parse log target %s.", optarg);
849 return r;
850 }
851
852 break;
853
bbe63281
LP		 854 case ARG_LOG_COLOR:
855
d0b170c8 856 if (optarg) {
fb472900
ZJS		 857 r = log_show_color_from_string(optarg);
858 if (r < 0) {
d0b170c8
LP		 859 log_error("Failed to parse log color setting %s.", optarg);
860 return r;
861 }
862 } else
863 log_show_color(true);
bbe63281
LP		 864
865 break;
866
867 case ARG_LOG_LOCATION:
d0b170c8 868 if (optarg) {
fb472900
ZJS		 869 r = log_show_location_from_string(optarg);
870 if (r < 0) {
d0b170c8
LP		 871 log_error("Failed to parse log location setting %s.", optarg);
872 return r;
873 }
874 } else
875 log_show_location(true);
bbe63281
LP		 876
877 break;
878
0a494f1f 879 case ARG_DEFAULT_STD_OUTPUT:
fb472900
ZJS		 880 r = exec_output_from_string(optarg);
881 if (r < 0) {
0a494f1f
LP		 882 log_error("Failed to parse default standard output setting %s.", optarg);
883 return r;
884 } else
885 arg_default_std_output = r;
886 break;
887
888 case ARG_DEFAULT_STD_ERROR:
fb472900
ZJS		 889 r = exec_output_from_string(optarg);
890 if (r < 0) {
0a494f1f
LP		 891 log_error("Failed to parse default standard error output setting %s.", optarg);
892 return r;
893 } else
894 arg_default_std_error = r;
895 break;
896
2f198e2f 897 case ARG_UNIT:
e6e242ad 898 r = free_and_strdup(&arg_default_unit, optarg);
23bbb0de
MS		 899 if (r < 0)
900 return log_error_errno(r, "Failed to set default unit %s: %m", optarg);
f170852a
LP		 901
902 break;
903
edb9aaa8 904 case ARG_SYSTEM:
463d0d15 905 arg_system = true;
edb9aaa8 906 break;
a5dab5ce 907
af2d49f7 908 case ARG_USER:
463d0d15 909 arg_system = false;
a5dab5ce 910 break;
a5dab5ce 911
e965d56d 912 case ARG_TEST:
fa0f4d8a 913 arg_action = ACTION_TEST;
b87c2aa6
ZJS		 914 break;
915
916 case ARG_NO_PAGER:
917 arg_no_pager = true;
e965d56d
LP		 918 break;
919
9ba0bc4e
ZJS		 920 case ARG_VERSION:
921 arg_action = ACTION_VERSION;
922 break;
923
e537352b 924 case ARG_DUMP_CONFIGURATION_ITEMS:
fa0f4d8a 925 arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
e537352b
LP		 926 break;
927
bbc1acab
YW		 928 case ARG_DUMP_BUS_PROPERTIES:
929 arg_action = ACTION_DUMP_BUS_PROPERTIES;
930 break;
931
9e58ff9c 932 case ARG_DUMP_CORE:
b9e74c39
LP		 933 if (!optarg)
934 arg_dump_core = true;
935 else {
936 r = parse_boolean(optarg);
937 if (r < 0)
938 return log_error_errno(r, "Failed to parse dump core boolean: %s", optarg);
939 arg_dump_core = r;
a5d87bf0 940 }
b9e74c39
LP		 941 break;
942
943 case ARG_CRASH_CHVT:
944 r = parse_crash_chvt(optarg);
945 if (r < 0)
946 return log_error_errno(r, "Failed to parse crash virtual terminal index: %s", optarg);
9e58ff9c
LP		 947 break;
948
949 case ARG_CRASH_SHELL:
b9e74c39
LP		 950 if (!optarg)
951 arg_crash_shell = true;
952 else {
953 r = parse_boolean(optarg);
954 if (r < 0)
955 return log_error_errno(r, "Failed to parse crash shell boolean: %s", optarg);
956 arg_crash_shell = r;
957 }
958 break;
959
960 case ARG_CRASH_REBOOT:
961 if (!optarg)
962 arg_crash_reboot = true;
963 else {
964 r = parse_boolean(optarg);
965 if (r < 0)
966 return log_error_errno(r, "Failed to parse crash shell boolean: %s", optarg);
967 arg_crash_reboot = r;
a5d87bf0 968 }
9e58ff9c
LP		 969 break;
970
80876c20 971 case ARG_CONFIRM_SPAWN:
7d5ceb64
FB		 972 arg_confirm_spawn = mfree(arg_confirm_spawn);
973
974 r = parse_confirm_spawn(optarg, &arg_confirm_spawn);
975 if (r < 0)
976 return log_error_errno(r, "Failed to parse confirm spawn option: %m");
80876c20
LP		 977 break;
978
2a12e32e
JK		 979 case ARG_SERVICE_WATCHDOGS:
980 r = parse_boolean(optarg);
981 if (r < 0)
982 return log_error_errno(r, "Failed to parse service watchdogs boolean: %s", optarg);
983 arg_service_watchdogs = r;
984 break;
985
9e58ff9c 986 case ARG_SHOW_STATUS:
d450b6f2
ZJS		 987 if (optarg) {
988 r = parse_show_status(optarg, &arg_show_status);
989 if (r < 0) {
990 log_error("Failed to parse show status boolean %s.", optarg);
991 return r;
992 }
993 } else
994 arg_show_status = SHOW_STATUS_YES;
6e98720f 995 break;
a5d87bf0 996
a16e1123
LP		 997 case ARG_DESERIALIZE: {
998 int fd;
999 FILE *f;
1000
01e10de3
LP		 1001 r = safe_atoi(optarg, &fd);
1002 if (r < 0 || fd < 0) {
a16e1123 1003 log_error("Failed to parse deserialize option %s.", optarg);
b9e74c39 1004 return -EINVAL;
a16e1123
LP		 1005 }
1006
b9e74c39 1007 (void) fd_cloexec(fd, true);
01e10de3
LP		 1008
1009 f = fdopen(fd, "r");
4a62c710
MS		 1010 if (!f)
1011 return log_error_errno(errno, "Failed to open serialization fd: %m");
a16e1123 1012
74ca738f 1013 safe_fclose(arg_serialization);
d3b1c508 1014 arg_serialization = f;
a16e1123
LP		 1015
1016 break;
1017 }
1018
2660882b 1019 case ARG_SWITCHED_ROOT:
bf4df7c3 1020 arg_switched_root = true;
d03bc1b8
HH		 1021 break;
1022
ee48dbd5
NC		 1023 case ARG_MACHINE_ID:
1024 r = set_machine_id(optarg);
54500613
LP		 1025 if (r < 0)
1026 return log_error_errno(r, "MachineID '%s' is not valid.", optarg);
ee48dbd5
NC		 1027 break;
1028
f170852a 1029 case 'h':
fa0f4d8a 1030 arg_action = ACTION_HELP;
f170852a
LP		 1031 break;
1032
1d2e23ab
LP		 1033 case 'D':
1034 log_set_max_level(LOG_DEBUG);
1035 break;
1036
099663ff
LP		 1037 case 'b':
1038 case 's':
1039 case 'z':
1040 /* Just to eat away the sysvinit kernel
1041 * cmdline args without getopt() error
1042 * messages that we'll parse in
1043 * parse_proc_cmdline_word() or ignore. */
f170852a 1044
099663ff 1045 case '?':
df0ff127 1046 if (getpid_cached() != 1)
099663ff 1047 return -EINVAL;
601185b4
ZJS		 1048 else
1049 return 0;
099663ff 1050
601185b4
ZJS		 1051 default:
1052 assert_not_reached("Unhandled option code.");
f170852a
LP		 1053 }
1054
df0ff127 1055 if (optind < argc && getpid_cached() != 1) {
d821e6d6
LP		 1056 /* Hmm, when we aren't run as init system
1057 * let's complain about excess arguments */
1058
1059 log_error("Excess arguments.");
1060 return -EINVAL;
1061 }
1062
f170852a
LP		 1063 return 0;
1064}
1065
1066static int help(void) {
1067
2e33c433 1068 printf("%s [OPTIONS...]\n\n"
af2d49f7 1069 "Starts up and maintains the system or user services.\n\n"
e537352b 1070 " -h --help Show this help\n"
cb4069d9 1071 " --version Show version\n"
e537352b 1072 " --test Determine startup sequence, dump it and exit\n"
b87c2aa6 1073 " --no-pager Do not pipe output into a pager\n"
80876c20 1074 " --dump-configuration-items Dump understood unit configuration items\n"
bbc1acab 1075 " --dump-bus-properties Dump exposed bus properties\n"
9e58ff9c 1076 " --unit=UNIT Set default unit\n"
edb9aaa8 1077 " --system Run a system instance, even if PID != 1\n"
af2d49f7 1078 " --user Run a user instance\n"
b9e74c39
LP		 1079 " --dump-core[=BOOL] Dump core on crash\n"
1080 " --crash-vt=NR Change to specified VT on crash\n"
1081 " --crash-reboot[=BOOL] Reboot on crash\n"
1082 " --crash-shell[=BOOL] Run shell on crash\n"
1083 " --confirm-spawn[=BOOL] Ask for confirmation when spawning processes\n"
1084 " --show-status[=BOOL] Show status updates on the console during bootup\n"
c1dc6153 1085 " --log-target=TARGET Set log target (console, journal, kmsg, journal-or-kmsg, null)\n"
9e58ff9c 1086 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
b9e74c39
LP		 1087 " --log-color[=BOOL] Highlight important log messages\n"
1088 " --log-location[=BOOL] Include code location in log messages\n"
0a494f1f
LP		 1089 " --default-standard-output= Set default standard output for services\n"
1090 " --default-standard-error= Set default standard error output for services\n",
5b6319dc 1091 program_invocation_short_name);
f170852a
LP		 1092
1093 return 0;
1094}
1095
b3680f49 1096static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds, bool switching_root) {
48b90859
LP		 1097 _cleanup_fdset_free_ FDSet *fds = NULL;
1098 _cleanup_fclose_ FILE *f = NULL;
a16e1123
LP		 1099 int r;
1100
1101 assert(m);
1102 assert(_f);
1103 assert(_fds);
1104
6b78f9b4 1105 r = manager_open_serialization(m, &f);
48b90859
LP		 1106 if (r < 0)
1107 return log_error_errno(r, "Failed to create serialization file: %m");
a16e1123 1108
71445ae7 1109 /* Make sure nothing is really destructed when we shut down */
313cefa1 1110 m->n_reloading++;
718db961 1111 bus_manager_send_reloading(m, true);
71445ae7 1112
6b78f9b4 1113 fds = fdset_new();
48b90859
LP		 1114 if (!fds)
1115 return log_oom();
a16e1123 1116
b3680f49 1117 r = manager_serialize(m, f, fds, switching_root);
48b90859
LP		 1118 if (r < 0)
1119 return log_error_errno(r, "Failed to serialize state: %m");
a16e1123 1120
48b90859
LP		 1121 if (fseeko(f, 0, SEEK_SET) == (off_t) -1)
1122 return log_error_errno(errno, "Failed to rewind serialization fd: %m");
a16e1123 1123
6b78f9b4 1124 r = fd_cloexec(fileno(f), false);
48b90859
LP		 1125 if (r < 0)
1126 return log_error_errno(r, "Failed to disable O_CLOEXEC for serialization: %m");
a16e1123 1127
6b78f9b4 1128 r = fdset_cloexec(fds, false);
48b90859
LP		 1129 if (r < 0)
1130 return log_error_errno(r, "Failed to disable O_CLOEXEC for serialization fds: %m");
a16e1123 1131
1cc6c93a
YW		 1132 *_f = TAKE_PTR(f);
1133 *_fds = TAKE_PTR(fds);
a16e1123 1134
48b90859 1135 return 0;
a16e1123
LP		 1136}
1137
4096d6f5 1138static int bump_rlimit_nofile(struct rlimit *saved_rlimit) {
9264cc39 1139 int r, nr;
4096d6f5
LP		 1140
1141 assert(saved_rlimit);
1142
1143 /* Save the original RLIMIT_NOFILE so that we can reset it
1144 * later when transitioning from the initrd to the main
1145 * systemd or suchlike. */
4a62c710 1146 if (getrlimit(RLIMIT_NOFILE, saved_rlimit) < 0)
3ce40911 1147 return log_warning_errno(errno, "Reading RLIMIT_NOFILE failed, ignoring: %m");
4096d6f5
LP		 1148
1149 /* Make sure forked processes get the default kernel setting */
1150 if (!arg_default_rlimit[RLIMIT_NOFILE]) {
1151 struct rlimit *rl;
1152
1153 rl = newdup(struct rlimit, saved_rlimit, 1);
1154 if (!rl)
1155 return log_oom();
1156
1157 arg_default_rlimit[RLIMIT_NOFILE] = rl;
1158 }
1159
9264cc39
LP		 1160 /* Bump up the resource limit for ourselves substantially, all the way to the maximum the kernel allows */
1161 nr = read_nr_open();
1162 r = setrlimit_closest(RLIMIT_NOFILE, &RLIMIT_MAKE_CONST(nr));
23bbb0de 1163 if (r < 0)
3ce40911 1164 return log_warning_errno(r, "Setting RLIMIT_NOFILE failed, ignoring: %m");
4096d6f5
LP		 1165
1166 return 0;
1167}
1168
fb3ae275
LP		 1169static int bump_rlimit_memlock(struct rlimit *saved_rlimit) {
1170 int r;
1171
1172 assert(saved_rlimit);
1173 assert(getuid() == 0);
1174
1175 /* BPF_MAP_TYPE_LPM_TRIE bpf maps are charged against RLIMIT_MEMLOCK, even though we have CAP_IPC_LOCK which
1176 * should normally disable such checks. We need them to implement IPAccessAllow= and IPAccessDeny=, hence let's
1177 * bump the value high enough for the root user. */
1178
1179 if (getrlimit(RLIMIT_MEMLOCK, saved_rlimit) < 0)
1180 return log_warning_errno(errno, "Reading RLIMIT_MEMLOCK failed, ignoring: %m");
1181
1182 r = setrlimit_closest(RLIMIT_MEMLOCK, &RLIMIT_MAKE_CONST(1024ULL*1024ULL*16ULL));
1183 if (r < 0)
1184 return log_warning_errno(r, "Setting RLIMIT_MEMLOCK failed, ignoring: %m");
1185
1186 return 0;
1187}
1188
80758717 1189static void test_usr(void) {
80758717 1190
ed1c99fc 1191 /* Check that /usr is not a separate fs */
80758717 1192
871c44a7
LP		 1193 if (dir_is_empty("/usr") <= 0)
1194 return;
1195
8b173b5e 1196 log_warning("/usr appears to be on its own filesystem and is not already mounted. This is not a supported setup. "
871c44a7
LP		 1197 "Some things will probably break (sometimes even silently) in mysterious ways. "
1198 "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
1199}
1200
d3b1c508 1201static int enforce_syscall_archs(Set *archs) {
349cc4a5 1202#if HAVE_SECCOMP
d3b1c508
LP		 1203 int r;
1204
83f12b27
FS		 1205 if (!is_seccomp_available())
1206 return 0;
1207
469830d1 1208 r = seccomp_restrict_archs(arg_syscall_archs);
d3b1c508 1209 if (r < 0)
469830d1 1210 return log_error_errno(r, "Failed to enforce system call architecture restrication: %m");
d3b1c508 1211#endif
469830d1 1212 return 0;
d3b1c508
LP		 1213}
1214
b6e2f329
LP		 1215static int status_welcome(void) {
1216 _cleanup_free_ char *pretty_name = NULL, *ansi_color = NULL;
1217 int r;
1218
fd8c85c6
LP		 1219 if (arg_show_status <= 0)
1220 return 0;
1221
d58ad743
LP		 1222 r = parse_os_release(NULL,
1223 "PRETTY_NAME", &pretty_name,
1224 "ANSI_COLOR", &ansi_color,
1225 NULL);
1226 if (r < 0)
1227 log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r,
1228 "Failed to read os-release file, ignoring: %m");
b6e2f329 1229
dc9b5816
ZJS		 1230 if (log_get_show_color())
1231 return status_printf(NULL, false, false,
1232 "\nWelcome to \x1B[%sm%s\x1B[0m!\n",
1233 isempty(ansi_color) ? "1" : ansi_color,
1234 isempty(pretty_name) ? "Linux" : pretty_name);
1235 else
1236 return status_printf(NULL, false, false,
1237 "\nWelcome to %s!\n",
1238 isempty(pretty_name) ? "Linux" : pretty_name);
b6e2f329
LP		 1239}
1240
fdd25311
LP		 1241static int write_container_id(void) {
1242 const char *c;
19854865 1243 int r;
fdd25311
LP		 1244
1245 c = getenv("container");
1246 if (isempty(c))
1247 return 0;
1248
8612da97
LP		 1249 RUN_WITH_UMASK(0022)
1250 r = write_string_file("/run/systemd/container", c, WRITE_STRING_FILE_CREATE);
19854865 1251 if (r < 0)
f1f849b0 1252 return log_warning_errno(r, "Failed to write /run/systemd/container, ignoring: %m");
19854865
LP		 1253
1254 return 1;
1255}
1256
1257static int bump_unix_max_dgram_qlen(void) {
1258 _cleanup_free_ char *qlen = NULL;
1259 unsigned long v;
1260 int r;
1261
1262 /* Let's bump the net.unix.max_dgram_qlen sysctl. The kernel
1263 * default of 16 is simply too low. We set the value really
1264 * really early during boot, so that it is actually applied to
1265 * all our sockets, including the $NOTIFY_SOCKET one. */
1266
1267 r = read_one_line_file("/proc/sys/net/unix/max_dgram_qlen", &qlen);
1268 if (r < 0)
1269 return log_warning_errno(r, "Failed to read AF_UNIX datagram queue length, ignoring: %m");
1270
1271 r = safe_atolu(qlen, &v);
1272 if (r < 0)
1273 return log_warning_errno(r, "Failed to parse AF_UNIX datagram queue length, ignoring: %m");
1274
1275 if (v >= DEFAULT_UNIX_MAX_DGRAM_QLEN)
1276 return 0;
1277
1278 qlen = mfree(qlen);
1279 if (asprintf(&qlen, "%lu\n", DEFAULT_UNIX_MAX_DGRAM_QLEN) < 0)
1280 return log_oom();
1281
1282 r = write_string_file("/proc/sys/net/unix/max_dgram_qlen", qlen, 0);
1283 if (r < 0)
1284 return log_full_errno(IN_SET(r, -EROFS, -EPERM, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
1285 "Failed to bump AF_UNIX datagram queue length, ignoring: %m");
1286
1287 return 1;
fdd25311
LP		 1288}
1289
32391275
FB		 1290static int fixup_environment(void) {
1291 _cleanup_free_ char *term = NULL;
4dc63c4b 1292 const char *t;
32391275
FB		 1293 int r;
1294
43db615b
LP		 1295 /* Only fix up the environment when we are started as PID 1 */
1296 if (getpid_cached() != 1)
1297 return 0;
1298
1299 /* We expect the environment to be set correctly if run inside a container. */
84af7821
LP		 1300 if (detect_container() > 0)
1301 return 0;
1302
43db615b
LP		 1303 /* When started as PID1, the kernel uses /dev/console for our stdios and uses TERM=linux whatever the backend
1304 * device used by the console. We try to make a better guess here since some consoles might not have support
1305 * for color mode for example.
32391275 1306 *
43db615b 1307 * However if TERM was configured through the kernel command line then leave it alone. */
1d84ad94 1308 r = proc_cmdline_get_key("TERM", 0, &term);
32391275
FB		 1309 if (r < 0)
1310 return r;
32391275 1311
4dc63c4b
LP		 1312 t = term ?: default_term_for_tty("/dev/console");
1313
1314 if (setenv("TERM", t, 1) < 0)
32391275
FB		 1315 return -errno;
1316
1317 return 0;
1318}
1319
6808a0bc
LP		 1320static void redirect_telinit(int argc, char *argv[]) {
1321
1322 /* This is compatibility support for SysV, where calling init as a user is identical to telinit. */
1323
1324#if HAVE_SYSV_COMPAT
1325 if (getpid_cached() == 1)
1326 return;
1327
1328 if (!strstr(program_invocation_short_name, "init"))
1329 return;
1330
1331 execv(SYSTEMCTL_BINARY_PATH, argv);
1332 log_error_errno(errno, "Failed to exec " SYSTEMCTL_BINARY_PATH ": %m");
a45d7127 1333 exit(EXIT_FAILURE);
6808a0bc
LP		 1334#endif
1335}
1336
4a36297c
LP		 1337static int become_shutdown(
1338 const char *shutdown_verb,
7eb35049 1339 int retval) {
4a36297c
LP		 1340
1341 char log_level[DECIMAL_STR_MAX(int) + 1],
e73c54b8
JK		 1342 exit_code[DECIMAL_STR_MAX(uint8_t) + 1],
1343 timeout[DECIMAL_STR_MAX(usec_t) + 1];
4a36297c 1344
e73c54b8 1345 const char* command_line[13] = {
4a36297c
LP		 1346 SYSTEMD_SHUTDOWN_BINARY_PATH,
1347 shutdown_verb,
e73c54b8 1348 "--timeout", timeout,
4a36297c
LP		 1349 "--log-level", log_level,
1350 "--log-target",
1351 };
1352
1353 _cleanup_strv_free_ char **env_block = NULL;
e73c54b8 1354 size_t pos = 7;
4a36297c
LP		 1355 int r;
1356
7eb35049 1357 assert(shutdown_verb);
234519ae 1358 assert(!command_line[pos]);
4a36297c
LP		 1359 env_block = strv_copy(environ);
1360
1361 xsprintf(log_level, "%d", log_get_max_level());
e73c54b8 1362 xsprintf(timeout, "%" PRI_USEC "us", arg_default_timeout_stop_usec);
4a36297c
LP		 1363
1364 switch (log_get_target()) {
1365
1366 case LOG_TARGET_KMSG:
1367 case LOG_TARGET_JOURNAL_OR_KMSG:
1368 case LOG_TARGET_SYSLOG_OR_KMSG:
1369 command_line[pos++] = "kmsg";
1370 break;
1371
1372 case LOG_TARGET_NULL:
1373 command_line[pos++] = "null";
1374 break;
1375
1376 case LOG_TARGET_CONSOLE:
1377 default:
1378 command_line[pos++] = "console";
1379 break;
1380 };
1381
1382 if (log_get_show_color())
1383 command_line[pos++] = "--log-color";
1384
1385 if (log_get_show_location())
1386 command_line[pos++] = "--log-location";
1387
1388 if (streq(shutdown_verb, "exit")) {
1389 command_line[pos++] = "--exit-code";
1390 command_line[pos++] = exit_code;
1391 xsprintf(exit_code, "%d", retval);
1392 }
1393
1394 assert(pos < ELEMENTSOF(command_line));
1395
7eb35049
LP		 1396 if (streq(shutdown_verb, "reboot") &&
1397 arg_shutdown_watchdog > 0 &&
1398 arg_shutdown_watchdog != USEC_INFINITY) {
1399
4a36297c
LP		 1400 char *e;
1401
1402 /* If we reboot let's set the shutdown
1403 * watchdog and tell the shutdown binary to
1404 * repeatedly ping it */
1405 r = watchdog_set_timeout(&arg_shutdown_watchdog);
1406 watchdog_close(r < 0);
1407
1408 /* Tell the binary how often to ping, ignore failure */
1409 if (asprintf(&e, "WATCHDOG_USEC="USEC_FMT, arg_shutdown_watchdog) > 0)
8a2c1fbf
EJ		 1410 (void) strv_consume(&env_block, e);
1411
1412 if (arg_watchdog_device &&
1413 asprintf(&e, "WATCHDOG_DEVICE=%s", arg_watchdog_device) > 0)
1414 (void) strv_consume(&env_block, e);
4a36297c
LP		 1415 } else
1416 watchdog_close(true);
1417
1418 /* Avoid the creation of new processes forked by the
1419 * kernel; at this point, we will not listen to the
1420 * signals anyway */
1421 if (detect_container() <= 0)
1422 (void) cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER);
1423
1424 execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block);
1425 return -errno;
1426}
1427
e839bafd
LP		 1428static void initialize_clock(void) {
1429 int r;
1430
1431 if (clock_is_localtime(NULL) > 0) {
1432 int min;
1433
1434 /*
1435 * The very first call of settimeofday() also does a time warp in the kernel.
1436 *
1437 * In the rtc-in-local time mode, we set the kernel's timezone, and rely on external tools to take care
1438 * of maintaining the RTC and do all adjustments. This matches the behavior of Windows, which leaves
1439 * the RTC alone if the registry tells that the RTC runs in UTC.
1440 */
1441 r = clock_set_timezone(&min);
1442 if (r < 0)
1443 log_error_errno(r, "Failed to apply local time delta, ignoring: %m");
1444 else
1445 log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min);
1446
1447 } else if (!in_initrd()) {
1448 /*
1449 * Do a dummy very first call to seal the kernel's time warp magic.
1450 *
1451 * Do not call this from inside the initrd. The initrd might not carry /etc/adjtime with LOCAL, but the
1452 * real system could be set up that way. In such case, we need to delay the time-warp or the sealing
1453 * until we reach the real system.
1454 *
1455 * Do no set the kernel's timezone. The concept of local time cannot be supported reliably, the time
1456 * will jump or be incorrect at every daylight saving time change. All kernel local time concepts will
1457 * be treated as UTC that way.
1458 */
1459 (void) clock_reset_timewarp();
1460 }
1461
1462 r = clock_apply_epoch();
1463 if (r < 0)
1464 log_error_errno(r, "Current system time is before build time, but cannot correct: %m");
1465 else if (r > 0)
1466 log_info("System time before build time, advancing clock.");
1467}
1468
1e41242e 1469static void initialize_coredump(bool skip_setup) {
752bcb77 1470#if ENABLE_COREDUMP
1e41242e
LP		 1471 if (getpid_cached() != 1)
1472 return;
1473
1474 /* Don't limit the core dump size, so that coredump handlers such as systemd-coredump (which honour the limit)
1475 * will process core dumps for system services by default. */
1476 if (setrlimit(RLIMIT_CORE, &RLIMIT_MAKE_CONST(RLIM_INFINITY)) < 0)
1477 log_warning_errno(errno, "Failed to set RLIMIT_CORE: %m");
1478
1479 /* But at the same time, turn off the core_pattern logic by default, so that no coredumps are stored
1480 * until the systemd-coredump tool is enabled via sysctl. */
1481 if (!skip_setup)
e557b1a6 1482 disable_coredumps();
752bcb77 1483#endif
1e41242e
LP		 1484}
1485
3c7878f9
LP		 1486static void do_reexecute(
1487 int argc,
1488 char *argv[],
1489 const struct rlimit *saved_rlimit_nofile,
1490 const struct rlimit *saved_rlimit_memlock,
1491 FDSet *fds,
1492 const char *switch_root_dir,
1493 const char *switch_root_init,
1494 const char **ret_error_message) {
1495
1496 unsigned i, j, args_size;
1497 const char **args;
1498 int r;
1499
1500 assert(saved_rlimit_nofile);
1501 assert(saved_rlimit_memlock);
1502 assert(ret_error_message);
1503
1504 /* Close and disarm the watchdog, so that the new instance can reinitialize it, but doesn't get rebooted while
1505 * we do that */
1506 watchdog_close(true);
1507
1508 /* Reset the RLIMIT_NOFILE to the kernel default, so that the new systemd can pass the kernel default to its
1509 * child processes */
1510
1511 if (saved_rlimit_nofile->rlim_cur > 0)
1512 (void) setrlimit(RLIMIT_NOFILE, saved_rlimit_nofile);
1513 if (saved_rlimit_memlock->rlim_cur != (rlim_t) -1)
1514 (void) setrlimit(RLIMIT_MEMLOCK, saved_rlimit_memlock);
1515
1516 if (switch_root_dir) {
1517 /* Kill all remaining processes from the initrd, but don't wait for them, so that we can handle the
1518 * SIGCHLD for them after deserializing. */
e73c54b8 1519 broadcast_signal(SIGTERM, false, true, arg_default_timeout_stop_usec);
3c7878f9
LP		 1520
1521 /* And switch root with MS_MOVE, because we remove the old directory afterwards and detach it. */
1522 r = switch_root(switch_root_dir, "/mnt", true, MS_MOVE);
1523 if (r < 0)
1524 log_error_errno(r, "Failed to switch root, trying to continue: %m");
1525 }
1526
1527 args_size = MAX(6, argc+1);
1528 args = newa(const char*, args_size);
1529
1530 if (!switch_root_init) {
1531 char sfd[DECIMAL_STR_MAX(int) + 1];
1532
1533 /* First try to spawn ourselves with the right path, and with full serialization. We do this only if
1534 * the user didn't specify an explicit init to spawn. */
1535
1536 assert(arg_serialization);
1537 assert(fds);
1538
1539 xsprintf(sfd, "%i", fileno(arg_serialization));
1540
1541 i = 0;
1542 args[i++] = SYSTEMD_BINARY_PATH;
1543 if (switch_root_dir)
1544 args[i++] = "--switched-root";
1545 args[i++] = arg_system ? "--system" : "--user";
1546 args[i++] = "--deserialize";
1547 args[i++] = sfd;
1548 args[i++] = NULL;
1549
1550 assert(i <= args_size);
1551
1552 /*
1553 * We want valgrind to print its memory usage summary before reexecution. Valgrind won't do this is on
1554 * its own on exec(), but it will do it on exit(). Hence, to ensure we get a summary here, fork() off
1555 * a child, let it exit() cleanly, so that it prints the summary, and wait() for it in the parent,
1556 * before proceeding into the exec().
1557 */
1558 valgrind_summary_hack();
1559
1560 (void) execv(args[0], (char* const*) args);
1561 log_debug_errno(errno, "Failed to execute our own binary, trying fallback: %m");
1562 }
1563
1564 /* Try the fallback, if there is any, without any serialization. We pass the original argv[] and envp[]. (Well,
1565 * modulo the ordering changes due to getopt() in argv[], and some cleanups in envp[], but let's hope that
1566 * doesn't matter.) */
1567
1568 arg_serialization = safe_fclose(arg_serialization);
1569 fds = fdset_free(fds);
1570
1571 /* Reopen the console */
1572 (void) make_console_stdio();
1573
1574 for (j = 1, i = 1; j < (unsigned) argc; j++)
1575 args[i++] = argv[j];
1576 args[i++] = NULL;
1577 assert(i <= args_size);
1578
1579 /* Reenable any blocked signals, especially important if we switch from initial ramdisk to init=... */
1580 (void) reset_all_signal_handlers();
1581 (void) reset_signal_mask();
1582
1583 if (switch_root_init) {
1584 args[0] = switch_root_init;
1585 (void) execv(args[0], (char* const*) args);
1586 log_warning_errno(errno, "Failed to execute configured init, trying fallback: %m");
1587 }
1588
1589 args[0] = "/sbin/init";
1590 (void) execv(args[0], (char* const*) args);
1591 r = -errno;
1592
1593 manager_status_printf(NULL, STATUS_TYPE_EMERGENCY,
1594 ANSI_HIGHLIGHT_RED " !! " ANSI_NORMAL,
1595 "Failed to execute /sbin/init");
1596
1597 if (r == -ENOENT) {
1598 log_warning("No /sbin/init, trying fallback");
1599
1600 args[0] = "/bin/sh";
1601 args[1] = NULL;
1602 (void) execv(args[0], (char* const*) args);
1603 log_error_errno(errno, "Failed to execute /bin/sh, giving up: %m");
1604 } else
1605 log_warning_errno(r, "Failed to execute /sbin/init, giving up: %m");
1606
1607 *ret_error_message = "Failed to execute fallback shell";
1608}
1609
7eb35049
LP		 1610static int invoke_main_loop(
1611 Manager *m,
1612 bool *ret_reexecute,
1613 int *ret_retval, /* Return parameters relevant for shutting down */
1614 const char **ret_shutdown_verb, /* … */
1615 FDSet **ret_fds, /* Return parameters for reexecuting */
1616 char **ret_switch_root_dir, /* … */
1617 char **ret_switch_root_init, /* … */
1618 const char **ret_error_message) {
1619
1620 int r;
1621
1622 assert(m);
1623 assert(ret_reexecute);
1624 assert(ret_retval);
1625 assert(ret_shutdown_verb);
1626 assert(ret_fds);
1627 assert(ret_switch_root_dir);
1628 assert(ret_switch_root_init);
1629 assert(ret_error_message);
1630
1631 for (;;) {
1632 r = manager_loop(m);
1633 if (r < 0) {
1634 *ret_error_message = "Failed to run main loop";
1635 return log_emergency_errno(r, "Failed to run main loop: %m");
1636 }
1637
1638 switch (m->exit_code) {
1639
1640 case MANAGER_RELOAD:
1641 log_info("Reloading.");
1642
1643 r = parse_config_file();
1644 if (r < 0)
1645 log_warning_errno(r, "Failed to parse config file, ignoring: %m");
1646
1647 set_manager_defaults(m);
1648
1649 r = manager_reload(m);
1650 if (r < 0)
1651 log_warning_errno(r, "Failed to reload, ignoring: %m");
1652
1653 break;
1654
1655 case MANAGER_REEXECUTE:
1656
1657 r = prepare_reexecute(m, &arg_serialization, ret_fds, false);
1658 if (r < 0) {
1659 *ret_error_message = "Failed to prepare for reexecution";
1660 return r;
1661 }
1662
1663 log_notice("Reexecuting.");
1664
1665 *ret_reexecute = true;
1666 *ret_retval = EXIT_SUCCESS;
1667 *ret_shutdown_verb = NULL;
1668 *ret_switch_root_dir = *ret_switch_root_init = NULL;
1669
1670 return 0;
1671
1672 case MANAGER_SWITCH_ROOT:
1673 if (!m->switch_root_init) {
1674 r = prepare_reexecute(m, &arg_serialization, ret_fds, true);
1675 if (r < 0) {
1676 *ret_error_message = "Failed to prepare for reexecution";
1677 return r;
1678 }
1679 } else
1680 *ret_fds = NULL;
1681
1682 log_notice("Switching root.");
1683
1684 *ret_reexecute = true;
1685 *ret_retval = EXIT_SUCCESS;
1686 *ret_shutdown_verb = NULL;
1687
1688 /* Steal the switch root parameters */
1689 *ret_switch_root_dir = m->switch_root;
1690 *ret_switch_root_init = m->switch_root_init;
1691 m->switch_root = m->switch_root_init = NULL;
1692
1693 return 0;
1694
1695 case MANAGER_EXIT:
1696
1697 if (MANAGER_IS_USER(m)) {
1698 log_debug("Exit.");
1699
1700 *ret_reexecute = false;
1701 *ret_retval = m->return_value;
1702 *ret_shutdown_verb = NULL;
1703 *ret_fds = NULL;
1704 *ret_switch_root_dir = *ret_switch_root_init = NULL;
1705
1706 return 0;
1707 }
1708
1709 _fallthrough_;
1710 case MANAGER_REBOOT:
1711 case MANAGER_POWEROFF:
1712 case MANAGER_HALT:
1713 case MANAGER_KEXEC: {
1714 static const char * const table[_MANAGER_EXIT_CODE_MAX] = {
1715 [MANAGER_EXIT] = "exit",
1716 [MANAGER_REBOOT] = "reboot",
1717 [MANAGER_POWEROFF] = "poweroff",
1718 [MANAGER_HALT] = "halt",
1719 [MANAGER_KEXEC] = "kexec"
1720 };
1721
1722 log_notice("Shutting down.");
1723
1724 *ret_reexecute = false;
1725 *ret_retval = m->return_value;
1726 assert_se(*ret_shutdown_verb = table[m->exit_code]);
1727 *ret_fds = NULL;
1728 *ret_switch_root_dir = *ret_switch_root_init = NULL;
1729
1730 return 0;
1731 }
1732
1733 default:
1734 assert_not_reached("Unknown exit code.");
1735 }
1736 }
1737}
1738
31aef7ff
LP		 1739static void log_execution_mode(bool *ret_first_boot) {
1740 assert(ret_first_boot);
1741
1742 if (arg_system) {
1743 int v;
1744
1745 log_info(PACKAGE_STRING " running in %ssystem mode. (" SYSTEMD_FEATURES ")",
1746 arg_action == ACTION_TEST ? "test " : "" );
1747
1748 v = detect_virtualization();
1749 if (v > 0)
1750 log_info("Detected virtualization %s.", virtualization_to_string(v));
1751
1752 log_info("Detected architecture %s.", architecture_to_string(uname_architecture()));
1753
1754 if (in_initrd()) {
1755 *ret_first_boot = false;
1756 log_info("Running in initial RAM disk.");
1757 } else {
1758 /* Let's check whether we are in first boot, i.e. whether /etc is still unpopulated. We use
1759 * /etc/machine-id as flag file, for this: if it exists we assume /etc is populated, if it
1760 * doesn't it's unpopulated. This allows container managers and installers to provision a
1761 * couple of files already. If the container manager wants to provision the machine ID itself
1762 * it should pass $container_uuid to PID 1. */
1763
1764 *ret_first_boot = access("/etc/machine-id", F_OK) < 0;
1765 if (*ret_first_boot)
1766 log_info("Running with unpopulated /etc.");
1767 }
1768 } else {
b9e90f3a
LP		 1769 if (DEBUG_LOGGING) {
1770 _cleanup_free_ char *t;
31aef7ff 1771
b9e90f3a
LP		 1772 t = uid_to_name(getuid());
1773 log_debug(PACKAGE_STRING " running in %suser mode for user " UID_FMT "/%s. (" SYSTEMD_FEATURES ")",
1774 arg_action == ACTION_TEST ? " test" : "", getuid(), strna(t));
1775 }
31aef7ff
LP		 1776
1777 *ret_first_boot = false;
1778 }
1779}
1780
5afbaa36
LP		 1781static int initialize_runtime(
1782 bool skip_setup,
1783 struct rlimit *saved_rlimit_nofile,
1784 struct rlimit *saved_rlimit_memlock,
1785 const char **ret_error_message) {
1786
1787 int r;
1788
1789 assert(ret_error_message);
1790
1791 /* Sets up various runtime parameters. Many of these initializations are conditionalized:
1792 *
1793 * - Some only apply to --system instances
1794 * - Some only apply to --user instances
1795 * - Some only apply when we first start up, but not when we reexecute
1796 */
1797
2d776038
LP		 1798 if (arg_action != ACTION_RUN)
1799 return 0;
1800
3c3c6cb9
LP		 1801 if (arg_system) {
1802 /* Make sure we leave a core dump without panicing the kernel. */
1803 install_crash_handler();
5afbaa36 1804
3c3c6cb9
LP		 1805 if (!skip_setup) {
1806 r = mount_cgroup_controllers(arg_join_controllers);
1807 if (r < 0) {
1808 *ret_error_message = "Failed to mount cgroup hierarchies";
1809 return r;
1810 }
1811
1812 status_welcome();
1813 hostname_setup();
1814 machine_id_setup(NULL, arg_machine_id, NULL);
1815 loopback_setup();
1816 bump_unix_max_dgram_qlen();
1817 test_usr();
1818 write_container_id();
1819 }
8a2c1fbf 1820
3c3c6cb9
LP		 1821 if (arg_watchdog_device) {
1822 r = watchdog_set_device(arg_watchdog_device);
1823 if (r < 0)
1824 log_warning_errno(r, "Failed to set watchdog device to %s, ignoring: %m", arg_watchdog_device);
1825 }
1826
1827 if (arg_runtime_watchdog > 0 && arg_runtime_watchdog != USEC_INFINITY)
1828 watchdog_set_timeout(&arg_runtime_watchdog);
1829 }
5afbaa36
LP		 1830
1831 if (arg_timer_slack_nsec != NSEC_INFINITY)
1832 if (prctl(PR_SET_TIMERSLACK, arg_timer_slack_nsec) < 0)
3a671cd1 1833 log_warning_errno(errno, "Failed to adjust timer slack, ignoring: %m");
5afbaa36
LP		 1834
1835 if (arg_system && !cap_test_all(arg_capability_bounding_set)) {
1836 r = capability_bounding_set_drop_usermode(arg_capability_bounding_set);
1837 if (r < 0) {
1838 *ret_error_message = "Failed to drop capability bounding set of usermode helpers";
1839 return log_emergency_errno(r, "Failed to drop capability bounding set of usermode helpers: %m");
1840 }
1841
1842 r = capability_bounding_set_drop(arg_capability_bounding_set, true);
1843 if (r < 0) {
1844 *ret_error_message = "Failed to drop capability bounding set";
1845 return log_emergency_errno(r, "Failed to drop capability bounding set: %m");
1846 }
1847 }
1848
39362f6f
JB		 1849 if (arg_system && arg_no_new_privs) {
1850 if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) < 0) {
1851 *ret_error_message = "Failed to disable new privileges";
1852 return log_emergency_errno(errno, "Failed to disable new privileges: %m");
1853 }
1854 }
1855
5afbaa36
LP		 1856 if (arg_syscall_archs) {
1857 r = enforce_syscall_archs(arg_syscall_archs);
1858 if (r < 0) {
1859 *ret_error_message = "Failed to set syscall architectures";
1860 return r;
1861 }
1862 }
1863
1864 if (!arg_system)
1865 /* Become reaper of our children */
1866 if (prctl(PR_SET_CHILD_SUBREAPER, 1) < 0)
1867 log_warning_errno(errno, "Failed to make us a subreaper: %m");
1868
1869 if (arg_system) {
1870 /* Bump up RLIMIT_NOFILE for systemd itself */
1871 (void) bump_rlimit_nofile(saved_rlimit_nofile);
1872 (void) bump_rlimit_memlock(saved_rlimit_memlock);
1873 }
1874
1875 return 0;
1876}
1877
6acca5fc
LP		 1878static int do_queue_default_job(
1879 Manager *m,
1880 const char **ret_error_message) {
1881
1882 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1883 Job *default_unit_job;
1884 Unit *target = NULL;
1885 int r;
1886
1887 log_debug("Activating default unit: %s", arg_default_unit);
1888
4109ede7
ZJS		 1889 r = manager_load_startable_unit_or_warn(m, arg_default_unit, NULL, &target);
1890 if (r < 0) {
1891 log_info("Falling back to rescue target: " SPECIAL_RESCUE_TARGET);
6acca5fc 1892
4109ede7 1893 r = manager_load_startable_unit_or_warn(m, SPECIAL_RESCUE_TARGET, NULL, &target);
6acca5fc 1894 if (r < 0) {
4109ede7
ZJS		 1895 *ret_error_message = r == -ERFKILL ? "Rescue target masked"
1896 : "Failed to load rescue target";
1897 return r;
6acca5fc
LP		 1898 }
1899 }
1900
1901 assert(target->load_state == UNIT_LOADED);
1902
1903 r = manager_add_job(m, JOB_START, target, JOB_ISOLATE, &error, &default_unit_job);
1904 if (r == -EPERM) {
1905 log_debug_errno(r, "Default target could not be isolated, starting instead: %s", bus_error_message(&error, r));
1906
1907 sd_bus_error_free(&error);
1908
1909 r = manager_add_job(m, JOB_START, target, JOB_REPLACE, &error, &default_unit_job);
1910 if (r < 0) {
1911 *ret_error_message = "Failed to start default target";
1912 return log_emergency_errno(r, "Failed to start default target: %s", bus_error_message(&error, r));
1913 }
1914
1915 } else if (r < 0) {
1916 *ret_error_message = "Failed to isolate default target";
1917 return log_emergency_errno(r, "Failed to isolate default target: %s", bus_error_message(&error, r));
1918 }
1919
1920 m->default_unit_job_id = default_unit_job->id;
1921
1922 return 0;
1923}
1924
970777b5
LP		 1925static void free_arguments(void) {
1926 size_t j;
1927
1928 /* Frees all arg_* variables, with the exception of arg_serialization */
1929
1930 for (j = 0; j < ELEMENTSOF(arg_default_rlimit); j++)
1931 arg_default_rlimit[j] = mfree(arg_default_rlimit[j]);
1932
1933 arg_default_unit = mfree(arg_default_unit);
1934 arg_confirm_spawn = mfree(arg_confirm_spawn);
1935 arg_join_controllers = strv_free_free(arg_join_controllers);
1936 arg_default_environment = strv_free(arg_default_environment);
1937 arg_syscall_archs = set_free(arg_syscall_archs);
1938}
1939
97d1fb94
LP		 1940static int load_configuration(int argc, char **argv, const char **ret_error_message) {
1941 int r;
1942
1943 assert(ret_error_message);
1944
1945 arg_default_tasks_max = system_tasks_max_scale(DEFAULT_TASKS_MAX_PERCENTAGE, 100U);
1946
1947 r = parse_config_file();
1948 if (r < 0) {
1949 *ret_error_message = "Failed to parse config file";
1950 return r;
1951 }
1952
1953 if (arg_system) {
1954 r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, 0);
1955 if (r < 0)
1956 log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
1957 }
1958
1959 /* Note that this also parses bits from the kernel command line, including "debug". */
1960 log_parse_environment();
1961
1962 r = parse_argv(argc, argv);
1963 if (r < 0) {
1964 *ret_error_message = "Failed to parse commandline arguments";
1965 return r;
1966 }
1967
1968 /* Initialize default unit */
1969 if (!arg_default_unit) {
1970 arg_default_unit = strdup(SPECIAL_DEFAULT_TARGET);
1971 if (!arg_default_unit) {
1972 *ret_error_message = "Failed to set default unit";
1973 return log_oom();
1974 }
1975 }
1976
db33214b
LP		 1977 /* Initialize the show status setting if it hasn't been set explicitly yet */
1978 if (arg_show_status == _SHOW_STATUS_UNSET)
1979 arg_show_status = SHOW_STATUS_YES;
1980
97d1fb94
LP		 1981 return 0;
1982}
1983
b0d7c989
LP		 1984static int safety_checks(void) {
1985
febf46a4
LP		 1986 if (getpid_cached() == 1 &&
1987 arg_action != ACTION_RUN) {
1988 log_error("Unsupported execution mode while PID 1.");
1989 return -EPERM;
1990 }
1991
1992 if (getpid_cached() == 1 &&
1993 !arg_system) {
1994 log_error("Can't run --user mode as PID 1.");
1995 return -EPERM;
1996 }
1997
1998 if (arg_action == ACTION_RUN &&
1999 arg_system &&
2000 getpid_cached() != 1) {
2001 log_error("Can't run system mode unless PID 1.");
2002 return -EPERM;
2003 }
2004
b0d7c989
LP		 2005 if (arg_action == ACTION_TEST &&
2006 geteuid() == 0) {
2007 log_error("Don't run test mode as root.");
2008 return -EPERM;
2009 }
2010
2011 if (!arg_system &&
2012 arg_action == ACTION_RUN &&
2013 sd_booted() <= 0) {
2014 log_error("Trying to run as user instance, but the system has not been booted with systemd.");
2015 return -EOPNOTSUPP;
2016 }
2017
2018 if (!arg_system &&
2019 arg_action == ACTION_RUN &&
2020 !getenv("XDG_RUNTIME_DIR")) {
2021 log_error("Trying to run as user instance, but $XDG_RUNTIME_DIR is not set.");
2022 return -EUNATCH;
2023 }
2024
2025 if (arg_system &&
2026 arg_action == ACTION_RUN &&
2027 running_in_chroot() > 0) {
2028 log_error("Cannot be run in a chroot() environment.");
2029 return -EOPNOTSUPP;
2030 }
2031
2032 return 0;
2033}
2034
74da609f
LP		 2035static int initialize_security(
2036 bool *loaded_policy,
2037 dual_timestamp *security_start_timestamp,
2038 dual_timestamp *security_finish_timestamp,
2039 const char **ret_error_message) {
2040
2041 int r;
2042
2043 assert(loaded_policy);
2044 assert(security_start_timestamp);
2045 assert(security_finish_timestamp);
2046 assert(ret_error_message);
2047
2048 dual_timestamp_get(security_start_timestamp);
2049
97149f40 2050 r = mac_selinux_setup(loaded_policy);
74da609f
LP		 2051 if (r < 0) {
2052 *ret_error_message = "Failed to load SELinux policy";
2053 return r;
2054 }
2055
2056 r = mac_smack_setup(loaded_policy);
2057 if (r < 0) {
2058 *ret_error_message = "Failed to load SMACK policy";
2059 return r;
2060 }
2061
2062 r = ima_setup();
2063 if (r < 0) {
2064 *ret_error_message = "Failed to load IMA policy";
2065 return r;
2066 }
2067
2068 dual_timestamp_get(security_finish_timestamp);
2069 return 0;
2070}
2071
263162da
LP		 2072static void test_summary(Manager *m) {
2073 assert(m);
2074
2075 printf("-> By units:\n");
2076 manager_dump_units(m, stdout, "\t");
2077
2078 printf("-> By jobs:\n");
2079 manager_dump_jobs(m, stdout, "\t");
2080}
2081
efeb853f
LP		 2082static int collect_fds(FDSet **ret_fds, const char **ret_error_message) {
2083 int r;
2084
2085 assert(ret_fds);
2086 assert(ret_error_message);
2087
2088 r = fdset_new_fill(ret_fds);
2089 if (r < 0) {
2090 *ret_error_message = "Failed to allocate fd set";
2091 return log_emergency_errno(r, "Failed to allocate fd set: %m");
2092 }
2093
2094 fdset_cloexec(*ret_fds, true);
2095
2096 if (arg_serialization)
2097 assert_se(fdset_remove(*ret_fds, fileno(arg_serialization)) >= 0);
2098
2099 return 0;
2100}
2101
2e51b31c
LP		 2102static void setup_console_terminal(bool skip_setup) {
2103
2104 if (!arg_system)
2105 return;
2106
2107 /* Become a session leader if we aren't one yet. */
2108 (void) setsid();
2109
2110 /* If we are init, we connect stdin/stdout/stderr to /dev/null and make sure we don't have a controlling
2111 * tty. */
2112 (void) release_terminal();
2113
2114 /* Reset the console, but only if this is really init and we are freshly booted */
2115 if (getpid_cached() == 1 && !skip_setup)
2116 (void) console_setup();
2117}
2118
aa40ff07
LP		 2119static bool early_skip_setup_check(int argc, char *argv[]) {
2120 bool found_deserialize = false;
2121 int i;
2122
2123 /* Determine if this is a reexecution or normal bootup. We do the full command line parsing much later, so
2124 * let's just have a quick peek here. Note that if we have switched root, do all the special setup things
2125 * anyway, even if in that case we also do deserialization. */
2126
2127 for (i = 1; i < argc; i++) {
2128
2129 if (streq(argv[i], "--switched-root"))
2130 return false; /* If we switched root, don't skip the setup. */
2131 else if (streq(argv[i], "--deserialize"))
2132 found_deserialize = true;
2133 }
2134
2135 return found_deserialize; /* When we are deserializing, then we are reexecuting, hence avoid the extensive setup */
2136}
2137
60918275 2138int main(int argc, char *argv[]) {
625e8690
LP		 2139
2140 dual_timestamp initrd_timestamp = DUAL_TIMESTAMP_NULL, userspace_timestamp = DUAL_TIMESTAMP_NULL, kernel_timestamp = DUAL_TIMESTAMP_NULL,
2141 security_start_timestamp = DUAL_TIMESTAMP_NULL, security_finish_timestamp = DUAL_TIMESTAMP_NULL;
2142 struct rlimit saved_rlimit_nofile = RLIMIT_MAKE_CONST(0), saved_rlimit_memlock = RLIMIT_MAKE_CONST((rlim_t) -1);
2143 bool skip_setup, loaded_policy = false, queue_default_job = false, first_boot = false, reexecute = false;
2144 char *switch_root_dir = NULL, *switch_root_init = NULL;
9d76d730 2145 usec_t before_startup, after_startup;
625e8690 2146 static char systemd[] = "systemd";
9d76d730 2147 char timespan[FORMAT_TIMESPAN_MAX];
625e8690
LP		 2148 const char *shutdown_verb = NULL, *error_message = NULL;
2149 int r, retval = EXIT_FAILURE;
2150 Manager *m = NULL;
a16e1123 2151 FDSet *fds = NULL;
27b14a22 2152
d72a8f10 2153 /* SysV compatibility: redirect init → telinit */
6808a0bc 2154 redirect_telinit(argc, argv);
2cb1a60d 2155
d72a8f10 2156 /* Take timestamps early on */
c3a170f3
HH		 2157 dual_timestamp_from_monotonic(&kernel_timestamp, 0);
2158 dual_timestamp_get(&userspace_timestamp);
2159
d72a8f10
LP		 2160 /* Figure out whether we need to do initialize the system, or if we already did that because we are
2161 * reexecuting */
aa40ff07 2162 skip_setup = early_skip_setup_check(argc, argv);
d03bc1b8 2163
d72a8f10
LP		 2164 /* If we get started via the /sbin/init symlink then we are called 'init'. After a subsequent reexecution we
2165 * are then called 'systemd'. That is confusing, hence let's call us systemd right-away. */
f3b6a3ed 2166 program_invocation_short_name = systemd;
eee8b7ab 2167 (void) prctl(PR_SET_NAME, systemd);
5d6b1584 2168
d72a8f10 2169 /* Save the original command line */
9a0e6896
LP		 2170 saved_argv = argv;
2171 saved_argc = argc;
f3b6a3ed 2172
6fdb8de4 2173 /* Make sure that if the user says "syslog" we actually log to the journal. */
c1dc6153 2174 log_set_upgrade_syslog_to_journal(true);
bbe63281 2175
df0ff127 2176 if (getpid_cached() == 1) {
48a601fe 2177 /* Disable the umask logic */
90dc8c2e
MG		 2178 umask(0);
2179
d075092f
LP		 2180 /* Make sure that at least initially we do not ever log to journald/syslogd, because it might not be activated
2181 * yet (even though the log socket for it exists). */
2182 log_set_prohibit_ipc(true);
2183
48a601fe
LP		 2184 /* Always reopen /dev/console when running as PID 1 or one of its pre-execve() children. This is
2185 * important so that we never end up logging to any foreign stderr, for example if we have to log in a
2186 * child process right before execve()'ing the actual binary, at a point in time where socket
2187 * activation stderr/stdout area already set up. */
2188 log_set_always_reopen_console(true);
2189 }
2190
df0ff127 2191 if (getpid_cached() == 1 && detect_container() <= 0) {
4f8d551f 2192
a866073d 2193 /* Running outside of a container as PID 1 */
463d0d15 2194 arg_system = true;
a866073d
LP		 2195 log_set_target(LOG_TARGET_KMSG);
2196 log_open();
2197
21bf2ab0 2198 if (in_initrd())
c3a170f3 2199 initrd_timestamp = userspace_timestamp;
c3ba6250 2200
2660882b 2201 if (!skip_setup) {
d723cd65
AK		 2202 r = mount_setup_early();
2203 if (r < 0) {
eee8b7ab 2204 error_message = "Failed to mount early API filesystems";
d723cd65
AK		 2205 goto finish;
2206 }
eee8b7ab 2207
74da609f
LP		 2208 r = initialize_security(
2209 &loaded_policy,
2210 &security_start_timestamp,
2211 &security_finish_timestamp,
2212 &error_message);
2213 if (r < 0)
96694e99 2214 goto finish;
81611586 2215 }
0b3325e7 2216
c3dacc8b 2217 if (mac_selinux_init() < 0) {
cb6531be 2218 error_message = "Failed to initialize SELinux policy";
0ff4cdd9 2219 goto finish;
cb6531be 2220 }
7948c4df 2221
e839bafd
LP		 2222 if (!skip_setup)
2223 initialize_clock();
a866073d
LP		 2224
2225 /* Set the default for later on, but don't actually
2226 * open the logs like this for now. Note that if we
2227 * are transitioning from the initrd there might still
2228 * be journal fd open, and we shouldn't attempt
2229 * opening that before we parsed /proc/cmdline which
2230 * might redirect output elsewhere. */
2231 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
2232
df0ff127 2233 } else if (getpid_cached() == 1) {
a866073d 2234 /* Running inside a container, as PID 1 */
463d0d15 2235 arg_system = true;
a866073d
LP		 2236 log_set_target(LOG_TARGET_CONSOLE);
2237 log_open();
2238
eee8b7ab 2239 /* For later on, see above... */
a866073d
LP		 2240 log_set_target(LOG_TARGET_JOURNAL);
2241
c3a170f3
HH		 2242 /* clear the kernel timestamp,
2243 * because we are in a container */
0f5f63c3 2244 kernel_timestamp = DUAL_TIMESTAMP_NULL;
c3a170f3 2245 } else {
a866073d 2246 /* Running as user instance */
463d0d15 2247 arg_system = false;
eeecf6e6 2248 log_set_target(LOG_TARGET_AUTO);
871e5809 2249 log_open();
c3a170f3
HH		 2250
2251 /* clear the kernel timestamp,
2252 * because we are not PID 1 */
6513d561 2253 kernel_timestamp = DUAL_TIMESTAMP_NULL;
bbe63281 2254 }
a5dab5ce 2255
1e41242e 2256 initialize_coredump(skip_setup);
15a90032 2257
43db615b
LP		 2258 r = fixup_environment();
2259 if (r < 0) {
2260 log_emergency_errno(r, "Failed to fix up PID 1 environment: %m");
2261 error_message = "Failed to fix up PID1 environment";
2262 goto finish;
2263 }
2264
6edefe0b 2265 if (arg_system) {
32391275 2266
3a18b604
FB		 2267 /* Try to figure out if we can use colors with the console. No
2268 * need to do that for user instances since they never log
2269 * into the console. */
2270 log_show_color(colors_enabled());
c76cf844
AK		 2271 r = make_null_stdio();
2272 if (r < 0)
2273 log_warning_errno(r, "Failed to redirect standard streams to /dev/null: %m");
3a18b604
FB		 2274 }
2275
f170852a
LP		 2276 /* Mount /proc, /sys and friends, so that /proc/cmdline and
2277 * /proc/$PID/fd is available. */
df0ff127 2278 if (getpid_cached() == 1) {
f84f9974 2279
a132bef0 2280 /* Load the kernel modules early. */
2e75e2a8
DM		 2281 if (!skip_setup)
2282 kmod_setup();
2e75e2a8 2283
0c85a4f3 2284 r = mount_setup(loaded_policy);
cb6531be
ZJS		 2285 if (r < 0) {
2286 error_message = "Failed to mount API filesystems";
8efe3c01 2287 goto finish;
cb6531be 2288 }
0c85a4f3 2289 }
4ade7963
LP		 2290
2291 /* Reset all signal handlers. */
ce30c8dc
LP		 2292 (void) reset_all_signal_handlers();
2293 (void) ignore_signals(SIGNALS_IGNORE, -1);
078e4539 2294
97d1fb94
LP		 2295 r = load_configuration(argc, argv, &error_message);
2296 if (r < 0)
f170852a 2297 goto finish;
10c961b9 2298
b0d7c989
LP		 2299 r = safety_checks();
2300 if (r < 0)
fe783b03 2301 goto finish;
fe783b03 2302
bbc1acab 2303 if (IN_SET(arg_action, ACTION_TEST, ACTION_HELP, ACTION_DUMP_CONFIGURATION_ITEMS, ACTION_DUMP_BUS_PROPERTIES))
ee5324aa 2304 (void) pager_open(arg_no_pager, false);
b0d7c989
LP		 2305
2306 if (arg_action != ACTION_RUN)
74e7579c 2307 skip_setup = true;
b87c2aa6 2308
fa0f4d8a 2309 if (arg_action == ACTION_HELP) {
f170852a
LP		 2310 retval = help();
2311 goto finish;
9ba0bc4e
ZJS		 2312 } else if (arg_action == ACTION_VERSION) {
2313 retval = version();
2314 goto finish;
fa0f4d8a 2315 } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
e537352b 2316 unit_dump_config_items(stdout);
22f4096c 2317 retval = EXIT_SUCCESS;
e537352b 2318 goto finish;
bbc1acab
YW		 2319 } else if (arg_action == ACTION_DUMP_BUS_PROPERTIES) {
2320 dump_bus_properties(stdout);
2321 retval = EXIT_SUCCESS;
2322 goto finish;
f170852a
LP		 2323 }
2324
4c701096 2325 assert_se(IN_SET(arg_action, ACTION_RUN, ACTION_TEST));
f170852a 2326
5a2e0c62
LP		 2327 /* Move out of the way, so that we won't block unmounts */
2328 assert_se(chdir("/") == 0);
2329
dea374e8 2330 if (arg_action == ACTION_RUN) {
a70c72a0 2331
efeb853f 2332 /* Close logging fds, in order not to confuse collecting passed fds and terminal logic below */
a70c72a0
LP		 2333 log_close();
2334
2335 /* Remember open file descriptors for later deserialization */
efeb853f
LP		 2336 r = collect_fds(&fds, &error_message);
2337 if (r < 0)
dea374e8 2338 goto finish;
a16e1123 2339
2e51b31c
LP		 2340 /* Give up any control of the console, but make sure its initialized. */
2341 setup_console_terminal(skip_setup);
56d96fc0 2342
a70c72a0
LP		 2343 /* Open the logging devices, if possible and necessary */
2344 log_open();
56d96fc0 2345 }
4ade7963 2346
31aef7ff 2347 log_execution_mode(&first_boot);
a5dab5ce 2348
2d776038
LP		 2349 r = initialize_runtime(skip_setup,
2350 &saved_rlimit_nofile,
2351 &saved_rlimit_memlock,
2352 &error_message);
2353 if (r < 0)
2354 goto finish;
4096d6f5 2355
e0a3da1f
ZJS		 2356 r = manager_new(arg_system ? UNIT_FILE_SYSTEM : UNIT_FILE_USER,
2357 arg_action == ACTION_TEST ? MANAGER_TEST_FULL : 0,
2358 &m);
e96d6be7 2359 if (r < 0) {
da927ba9 2360 log_emergency_errno(r, "Failed to allocate manager object: %m");
cb6531be 2361 error_message = "Failed to allocate manager object";
60918275
LP		 2362 goto finish;
2363 }
2364
9f9f0342
LP		 2365 m->timestamps[MANAGER_TIMESTAMP_KERNEL] = kernel_timestamp;
2366 m->timestamps[MANAGER_TIMESTAMP_INITRD] = initrd_timestamp;
2367 m->timestamps[MANAGER_TIMESTAMP_USERSPACE] = userspace_timestamp;
2368 m->timestamps[MANAGER_TIMESTAMP_SECURITY_START] = security_start_timestamp;
2369 m->timestamps[MANAGER_TIMESTAMP_SECURITY_FINISH] = security_finish_timestamp;
9e58ff9c 2370
85cb4151 2371 set_manager_defaults(m);
7b46fc6a 2372 set_manager_settings(m);
fd130612 2373 manager_set_first_boot(m, first_boot);
27d340c7 2374
bf4df7c3 2375 /* Remember whether we should queue the default job */
d3b1c508 2376 queue_default_job = !arg_serialization || arg_switched_root;
bf4df7c3 2377
9d76d730
LP		 2378 before_startup = now(CLOCK_MONOTONIC);
2379
d3b1c508 2380 r = manager_startup(m, arg_serialization, fds);
58f88d92 2381 if (r < 0) {
da927ba9 2382 log_error_errno(r, "Failed to fully start up daemon: %m");
cefb3eda 2383 error_message = "Failed to start up manager";
58f88d92
ZJS		 2384 goto finish;
2385 }
a16e1123 2386
6acca5fc 2387 /* This will close all file descriptors that were opened, but not claimed by any unit. */
2feceb5e 2388 fds = fdset_free(fds);
74ca738f 2389 arg_serialization = safe_fclose(arg_serialization);
bf4df7c3
LP		 2390
2391 if (queue_default_job) {
6acca5fc 2392 r = do_queue_default_job(m, &error_message);
718db961 2393 if (r < 0)
37d88da7 2394 goto finish;
6acca5fc 2395 }
ab17a050 2396
6acca5fc 2397 after_startup = now(CLOCK_MONOTONIC);
60918275 2398
6acca5fc
LP		 2399 log_full(arg_action == ACTION_TEST ? LOG_INFO : LOG_DEBUG,
2400 "Loaded units and determined initial transaction in %s.",
2401 format_timespan(timespan, sizeof(timespan), after_startup - before_startup, 100 * USEC_PER_MSEC));
07672f49 2402
6acca5fc 2403 if (arg_action == ACTION_TEST) {
263162da 2404 test_summary(m);
6acca5fc
LP		 2405 retval = EXIT_SUCCESS;
2406 goto finish;
e965d56d 2407 }
d46de8a1 2408
3046b6db
LP		 2409 (void) invoke_main_loop(m,
2410 &reexecute,
2411 &retval,
2412 &shutdown_verb,
2413 &fds,
2414 &switch_root_dir,
2415 &switch_root_init,
2416 &error_message);
f170852a 2417
60918275 2418finish:
b87c2aa6
ZJS		 2419 pager_close();
2420
97792515 2421 if (m)
81f5fc2d 2422 arg_shutdown_watchdog = m->shutdown_watchdog;
fe382237 2423
06d8d842 2424 m = manager_free(m);
60918275 2425
970777b5 2426 free_arguments();
cc56fafe 2427 mac_selinux_finish();
b2bb3dbe 2428
3c7878f9
LP		 2429 if (reexecute)
2430 do_reexecute(argc, argv,
2431 &saved_rlimit_nofile,
2432 &saved_rlimit_memlock,
2433 fds,
2434 switch_root_dir,
2435 switch_root_init,
2436 &error_message); /* This only returns if reexecution failed */
a16e1123 2437
74ca738f 2438 arg_serialization = safe_fclose(arg_serialization);
2feceb5e 2439 fds = fdset_free(fds);
a16e1123 2440
349cc4a5 2441#if HAVE_VALGRIND_VALGRIND_H
54b434b1
LP		 2442 /* If we are PID 1 and running under valgrind, then let's exit
2443 * here explicitly. valgrind will only generate nice output on
2444 * exit(), not on exec(), hence let's do the former not the
2445 * latter here. */
8a2c1fbf
EJ		 2446 if (getpid_cached() == 1 && RUNNING_ON_VALGRIND) {
2447 /* Cleanup watchdog_device strings for valgrind. We need them
2448 * in become_shutdown() so normally we cannot free them yet. */
2449 watchdog_free_device();
2450 arg_watchdog_device = mfree(arg_watchdog_device);
27fe58b7 2451 return retval;
8a2c1fbf 2452 }
54b434b1
LP		 2453#endif
2454
b9080b03 2455 if (shutdown_verb) {
7eb35049 2456 r = become_shutdown(shutdown_verb, retval);
ad929bcc 2457
4a36297c 2458 log_error_errno(r, "Failed to execute shutdown binary, %s: %m", getpid_cached() == 1 ? "freezing" : "quitting");
9b9881d7 2459 error_message = "Failed to execute shutdown binary";
b9080b03
FF		 2460 }
2461
8a2c1fbf
EJ		 2462 watchdog_free_device();
2463 arg_watchdog_device = mfree(arg_watchdog_device);
2464
df0ff127 2465 if (getpid_cached() == 1) {
cb6531be
ZJS		 2466 if (error_message)
2467 manager_status_printf(NULL, STATUS_TYPE_EMERGENCY,
1fc464f6 2468 ANSI_HIGHLIGHT_RED "!!!!!!" ANSI_NORMAL,
cb6531be 2469 "%s, freezing.", error_message);
b9e74c39 2470 freeze_or_reboot();
cb6531be 2471 }
c3b3c274 2472
60918275
LP		 2473 return retval;
2474}
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