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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
a7334b09 | 2 | |
60918275 | 3 | #include <errno.h> |
3dfc9763 | 4 | #include <fcntl.h> |
f170852a | 5 | #include <getopt.h> |
d4a402e4 | 6 | #include <linux/oom.h> |
664f88a7 | 7 | #include <sys/mount.h> |
3dfc9763 | 8 | #include <sys/prctl.h> |
40efaaed | 9 | #include <sys/utsname.h> |
3dfc9763 | 10 | #include <unistd.h> |
349cc4a5 | 11 | #if HAVE_VALGRIND_VALGRIND_H |
50b35193 | 12 | # include <valgrind/valgrind.h> |
3dfc9763 | 13 | #endif |
54b434b1 | 14 | |
718db961 | 15 | #include "sd-bus.h" |
cf0fbc49 | 16 | #include "sd-daemon.h" |
b2e7486c | 17 | #include "sd-messages.h" |
3dfc9763 | 18 | |
b5efdb8a | 19 | #include "alloc-util.h" |
2ffadd3c | 20 | #include "apparmor-setup.h" |
d9d93745 | 21 | #include "architecture.h" |
ee617a4e | 22 | #include "argv-util.h" |
b1994387 | 23 | #if HAVE_LIBBPF |
169b5675 | 24 | #include "bpf-restrict-fs.h" |
b1994387 | 25 | #endif |
3dfc9763 LP |
26 | #include "build.h" |
27 | #include "bus-error.h" | |
28 | #include "bus-util.h" | |
430f0182 | 29 | #include "capability-util.h" |
a88c5b8a | 30 | #include "cgroup-util.h" |
aaa27e2e | 31 | #include "chase.h" |
24efb112 | 32 | #include "clock-util.h" |
3dfc9763 | 33 | #include "conf-parser.h" |
024469dd | 34 | #include "confidential-virt.h" |
3f37a825 | 35 | #include "copy.h" |
618234a5 | 36 | #include "cpu-set-util.h" |
898c9a6f | 37 | #include "crash-handler.h" |
3dfc9763 | 38 | #include "dbus-manager.h" |
c18ecf03 | 39 | #include "dbus.h" |
28db6fbf | 40 | #include "constants.h" |
32429805 | 41 | #include "dev-setup.h" |
c18ecf03 | 42 | #include "efi-random.h" |
209b2592 | 43 | #include "efivars.h" |
eee8b7ab | 44 | #include "emergency-action.h" |
3dfc9763 | 45 | #include "env-util.h" |
57b7a260 | 46 | #include "exit-status.h" |
3ffd4af2 | 47 | #include "fd-util.h" |
3dfc9763 | 48 | #include "fdset.h" |
718db961 | 49 | #include "fileio.h" |
f97b34a6 | 50 | #include "format-util.h" |
f4f15635 | 51 | #include "fs-util.h" |
6339d3e6 | 52 | #include "getopt-defs.h" |
d247f232 | 53 | #include "hexdecoct.h" |
3dfc9763 LP |
54 | #include "hostname-setup.h" |
55 | #include "ima-setup.h" | |
4b9a4b01 | 56 | #include "import-creds.h" |
baa6a42d | 57 | #include "initrd-util.h" |
3dfc9763 LP |
58 | #include "killall.h" |
59 | #include "kmod-setup.h" | |
eefc66aa | 60 | #include "limits-util.h" |
d7b8eec7 | 61 | #include "load-fragment.h" |
3dfc9763 | 62 | #include "log.h" |
b6e66135 | 63 | #include "loopback-setup.h" |
b6e66135 | 64 | #include "machine-id-setup.h" |
898c9a6f | 65 | #include "main.h" |
3dfc9763 | 66 | #include "manager.h" |
2a341bb9 | 67 | #include "manager-dump.h" |
a01ba4b2 | 68 | #include "manager-serialize.h" |
35cd0ba5 | 69 | #include "mkdir-label.h" |
3dfc9763 | 70 | #include "mount-setup.h" |
ffc1ec73 | 71 | #include "mount-util.h" |
d58ad743 | 72 | #include "os-util.h" |
3dfc9763 | 73 | #include "pager.h" |
614b022c | 74 | #include "parse-argument.h" |
6bedfcbb | 75 | #include "parse-util.h" |
7d5ceb64 | 76 | #include "path-util.h" |
294bf0c3 | 77 | #include "pretty-print.h" |
4e731273 | 78 | #include "proc-cmdline.h" |
3dfc9763 | 79 | #include "process-util.h" |
6bb00842 | 80 | #include "psi-util.h" |
d247f232 | 81 | #include "random-util.h" |
78f22b97 | 82 | #include "rlimit-util.h" |
83f12b27 | 83 | #include "seccomp-util.h" |
b6e66135 | 84 | #include "selinux-setup.h" |
3dfc9763 LP |
85 | #include "selinux-util.h" |
86 | #include "signal-util.h" | |
ffbd2c4d | 87 | #include "smack-setup.h" |
3dfc9763 | 88 | #include "special.h" |
8fcde012 | 89 | #include "stat-util.h" |
15a5e950 | 90 | #include "stdio-util.h" |
7a66f215 | 91 | #include "string-table.h" |
3dfc9763 LP |
92 | #include "strv.h" |
93 | #include "switch-root.h" | |
a8b627aa | 94 | #include "sysctl-util.h" |
3dfc9763 | 95 | #include "terminal-util.h" |
b10abe4b | 96 | #include "time-util.h" |
8612da97 | 97 | #include "umask-util.h" |
b1d4f8e1 | 98 | #include "user-util.h" |
bdb577f5 | 99 | #include "version.h" |
3dfc9763 LP |
100 | #include "virt.h" |
101 | #include "watchdog.h" | |
b6e66135 | 102 | |
7e11a95e EV |
103 | #if HAS_FEATURE_ADDRESS_SANITIZER |
104 | #include <sanitizer/lsan_interface.h> | |
105 | #endif | |
106 | ||
f170852a LP |
107 | static enum { |
108 | ACTION_RUN, | |
e965d56d | 109 | ACTION_HELP, |
9ba0bc4e | 110 | ACTION_VERSION, |
e537352b | 111 | ACTION_TEST, |
bbc1acab YW |
112 | ACTION_DUMP_CONFIGURATION_ITEMS, |
113 | ACTION_DUMP_BUS_PROPERTIES, | |
5c08257b | 114 | ACTION_BUS_INTROSPECT, |
fa0f4d8a | 115 | } arg_action = ACTION_RUN; |
fb39af4c | 116 | |
5c08257b ZJS |
117 | static const char *arg_bus_introspect = NULL; |
118 | ||
45250e66 LP |
119 | /* Those variables are initialized to 0 automatically, so we avoid uninitialized memory access. Real |
120 | * defaults are assigned in reset_arguments() below. */ | |
fb39af4c | 121 | static char *arg_default_unit; |
4870133b | 122 | static RuntimeScope arg_runtime_scope; |
898c9a6f LP |
123 | bool arg_dump_core; |
124 | int arg_crash_chvt; | |
125 | bool arg_crash_shell; | |
7a66f215 | 126 | CrashAction arg_crash_action; |
fb39af4c ZJS |
127 | static char *arg_confirm_spawn; |
128 | static ShowStatus arg_show_status; | |
36cf4507 | 129 | static StatusUnitFormat arg_status_unit_format; |
fb39af4c ZJS |
130 | static bool arg_switched_root; |
131 | static PagerFlags arg_pager_flags; | |
132 | static bool arg_service_watchdogs; | |
c9e120e0 | 133 | static UnitDefaults arg_defaults; |
fb39af4c | 134 | static usec_t arg_runtime_watchdog; |
65224c1d | 135 | static usec_t arg_reboot_watchdog; |
acafd7d8 | 136 | static usec_t arg_kexec_watchdog; |
5717062e | 137 | static usec_t arg_pretimeout_watchdog; |
fb39af4c | 138 | static char *arg_early_core_pattern; |
aff3a9e1 | 139 | static char *arg_watchdog_pretimeout_governor; |
fb39af4c ZJS |
140 | static char *arg_watchdog_device; |
141 | static char **arg_default_environment; | |
d55ed7de | 142 | static char **arg_manager_environment; |
fb39af4c ZJS |
143 | static uint64_t arg_capability_bounding_set; |
144 | static bool arg_no_new_privs; | |
ffc1ec73 | 145 | static int arg_protect_system; |
fb39af4c | 146 | static nsec_t arg_timer_slack_nsec; |
fb39af4c ZJS |
147 | static Set* arg_syscall_archs; |
148 | static FILE* arg_serialization; | |
fb39af4c ZJS |
149 | static sd_id128_t arg_machine_id; |
150 | static EmergencyAction arg_cad_burst_action; | |
fb39af4c | 151 | static CPUSet arg_cpu_affinity; |
b070c7c0 | 152 | static NUMAPolicy arg_numa_policy; |
3753325b | 153 | static usec_t arg_clock_usec; |
d247f232 LP |
154 | static void *arg_random_seed; |
155 | static size_t arg_random_seed_size; | |
856bfaeb LB |
156 | static usec_t arg_reload_limit_interval_sec; |
157 | static unsigned arg_reload_limit_burst; | |
61fbbac1 | 158 | |
0e06a031 LP |
159 | /* A copy of the original environment block */ |
160 | static char **saved_env = NULL; | |
161 | ||
a9fd4cd1 FB |
162 | static int parse_configuration(const struct rlimit *saved_rlimit_nofile, |
163 | const struct rlimit *saved_rlimit_memlock); | |
4fc935ca | 164 | |
7a66f215 DDM |
165 | static const char* const crash_action_table[_CRASH_ACTION_MAX] = { |
166 | [CRASH_FREEZE] = "freeze", | |
167 | [CRASH_REBOOT] = "reboot", | |
168 | [CRASH_POWEROFF] = "poweroff", | |
169 | }; | |
170 | ||
171 | DEFINE_STRING_TABLE_LOOKUP(crash_action, CrashAction); | |
172 | ||
173 | static DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_crash_action, crash_action, CrashAction, CRASH_FREEZE, "Invalid crash action"); | |
174 | ||
f70e6fb4 ZJS |
175 | static int manager_find_user_config_paths(char ***ret_files, char ***ret_dirs) { |
176 | _cleanup_free_ char *base = NULL; | |
177 | _cleanup_strv_free_ char **files = NULL, **dirs = NULL; | |
178 | int r; | |
179 | ||
180 | r = xdg_user_config_dir(&base, "/systemd"); | |
181 | if (r < 0) | |
182 | return r; | |
183 | ||
184 | r = strv_extendf(&files, "%s/user.conf", base); | |
185 | if (r < 0) | |
186 | return r; | |
187 | ||
188 | r = strv_extend(&files, PKGSYSCONFDIR "/user.conf"); | |
189 | if (r < 0) | |
190 | return r; | |
191 | ||
192 | r = strv_consume(&dirs, TAKE_PTR(base)); | |
193 | if (r < 0) | |
194 | return r; | |
195 | ||
196 | r = strv_extend_strv(&dirs, CONF_PATHS_STRV("systemd"), false); | |
197 | if (r < 0) | |
198 | return r; | |
199 | ||
200 | *ret_files = TAKE_PTR(files); | |
201 | *ret_dirs = TAKE_PTR(dirs); | |
202 | return 0; | |
203 | } | |
204 | ||
56d96fc0 | 205 | static int console_setup(void) { |
254d1313 | 206 | _cleanup_close_ int tty_fd = -EBADF; |
29f5a5ae | 207 | unsigned rows, cols; |
56d96fc0 | 208 | int r; |
80876c20 | 209 | |
512947d4 | 210 | tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC); |
23bbb0de MS |
211 | if (tty_fd < 0) |
212 | return log_error_errno(tty_fd, "Failed to open /dev/console: %m"); | |
80876c20 | 213 | |
56d96fc0 LP |
214 | /* We don't want to force text mode. plymouth may be showing |
215 | * pictures already from initrd. */ | |
512947d4 | 216 | r = reset_terminal_fd(tty_fd, false); |
23bbb0de MS |
217 | if (r < 0) |
218 | return log_error_errno(r, "Failed to reset /dev/console: %m"); | |
843d2643 | 219 | |
29f5a5ae DDM |
220 | r = proc_cmdline_tty_size("/dev/console", &rows, &cols); |
221 | if (r < 0) | |
00bc83a2 | 222 | log_warning_errno(r, "Failed to get /dev/console size, ignoring: %m"); |
29f5a5ae DDM |
223 | else { |
224 | r = terminal_set_size_fd(tty_fd, NULL, rows, cols); | |
225 | if (r < 0) | |
00bc83a2 | 226 | log_warning_errno(r, "Failed to set /dev/console size, ignoring: %m"); |
29f5a5ae DDM |
227 | } |
228 | ||
00bc83a2 DDM |
229 | r = terminal_reset_ansi_seq(tty_fd); |
230 | if (r < 0) | |
231 | log_warning_errno(r, "Failed to reset /dev/console using ANSI sequences, ignoring: %m"); | |
232 | ||
56d96fc0 | 233 | return 0; |
80876c20 LP |
234 | } |
235 | ||
96287a49 | 236 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
059cb385 | 237 | int r; |
f170852a | 238 | |
059cb385 | 239 | assert(key); |
5192bd19 | 240 | |
1d84ad94 | 241 | if (STR_IN_SET(key, "systemd.unit", "rd.systemd.unit")) { |
bf4df7c3 | 242 | |
1d84ad94 LP |
243 | if (proc_cmdline_value_missing(key, value)) |
244 | return 0; | |
bf4df7c3 | 245 | |
1d84ad94 LP |
246 | if (!unit_name_is_valid(value, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) |
247 | log_warning("Unit name specified on %s= is not valid, ignoring: %s", key, value); | |
cd57038a ZJS |
248 | else if (in_initrd() == !!startswith(key, "rd.")) |
249 | return free_and_strdup_warn(&arg_default_unit, value); | |
f170852a | 250 | |
1d84ad94 | 251 | } else if (proc_cmdline_key_streq(key, "systemd.dump_core")) { |
4fc935ca | 252 | |
1d84ad94 | 253 | r = value ? parse_boolean(value) : true; |
fb472900 | 254 | if (r < 0) |
5e1ee764 | 255 | log_warning_errno(r, "Failed to parse dump core switch %s, ignoring: %m", value); |
4fc935ca | 256 | else |
fa0f4d8a | 257 | arg_dump_core = r; |
4fc935ca | 258 | |
c6885f5f FB |
259 | } else if (proc_cmdline_key_streq(key, "systemd.early_core_pattern")) { |
260 | ||
261 | if (proc_cmdline_value_missing(key, value)) | |
262 | return 0; | |
263 | ||
264 | if (path_is_absolute(value)) | |
614b022c | 265 | (void) parse_path_argument(value, false, &arg_early_core_pattern); |
c6885f5f FB |
266 | else |
267 | log_warning("Specified core pattern '%s' is not an absolute path, ignoring.", value); | |
268 | ||
1d84ad94 | 269 | } else if (proc_cmdline_key_streq(key, "systemd.crash_chvt")) { |
b9e74c39 | 270 | |
1d84ad94 LP |
271 | if (!value) |
272 | arg_crash_chvt = 0; /* turn on */ | |
5e1ee764 | 273 | else { |
a07a7324 | 274 | r = parse_crash_chvt(value, &arg_crash_chvt); |
5e1ee764 YW |
275 | if (r < 0) |
276 | log_warning_errno(r, "Failed to parse crash chvt switch %s, ignoring: %m", value); | |
277 | } | |
b9e74c39 | 278 | |
1d84ad94 | 279 | } else if (proc_cmdline_key_streq(key, "systemd.crash_shell")) { |
4fc935ca | 280 | |
1d84ad94 | 281 | r = value ? parse_boolean(value) : true; |
fb472900 | 282 | if (r < 0) |
5e1ee764 | 283 | log_warning_errno(r, "Failed to parse crash shell switch %s, ignoring: %m", value); |
4fc935ca | 284 | else |
fa0f4d8a | 285 | arg_crash_shell = r; |
5e7ee61c | 286 | |
1d84ad94 | 287 | } else if (proc_cmdline_key_streq(key, "systemd.crash_reboot")) { |
5e7ee61c | 288 | |
1d84ad94 | 289 | r = value ? parse_boolean(value) : true; |
b9e74c39 | 290 | if (r < 0) |
5e1ee764 | 291 | log_warning_errno(r, "Failed to parse crash reboot switch %s, ignoring: %m", value); |
5e7ee61c | 292 | else |
7a66f215 DDM |
293 | arg_crash_action = r ? CRASH_REBOOT : CRASH_FREEZE; |
294 | ||
295 | } else if (proc_cmdline_key_streq(key, "systemd.crash_action")) { | |
296 | ||
297 | if (proc_cmdline_value_missing(key, value)) | |
298 | return 0; | |
299 | ||
300 | r = crash_action_from_string(value); | |
301 | if (r < 0) | |
302 | log_warning_errno(r, "Failed to parse crash action switch %s, ignoring: %m", value); | |
303 | else | |
304 | arg_crash_action = r; | |
5e7ee61c | 305 | |
1d84ad94 LP |
306 | } else if (proc_cmdline_key_streq(key, "systemd.confirm_spawn")) { |
307 | char *s; | |
7d5ceb64 | 308 | |
1d84ad94 | 309 | r = parse_confirm_spawn(value, &s); |
059cb385 | 310 | if (r < 0) |
5e1ee764 YW |
311 | log_warning_errno(r, "Failed to parse confirm_spawn switch %s, ignoring: %m", value); |
312 | else | |
313 | free_and_replace(arg_confirm_spawn, s); | |
601f6a1e | 314 | |
2a12e32e JK |
315 | } else if (proc_cmdline_key_streq(key, "systemd.service_watchdogs")) { |
316 | ||
317 | r = value ? parse_boolean(value) : true; | |
318 | if (r < 0) | |
5e1ee764 | 319 | log_warning_errno(r, "Failed to parse service watchdog switch %s, ignoring: %m", value); |
2a12e32e JK |
320 | else |
321 | arg_service_watchdogs = r; | |
322 | ||
1d84ad94 | 323 | } else if (proc_cmdline_key_streq(key, "systemd.show_status")) { |
9e58ff9c | 324 | |
1d84ad94 LP |
325 | if (value) { |
326 | r = parse_show_status(value, &arg_show_status); | |
327 | if (r < 0) | |
5e1ee764 | 328 | log_warning_errno(r, "Failed to parse show status switch %s, ignoring: %m", value); |
1d84ad94 LP |
329 | } else |
330 | arg_show_status = SHOW_STATUS_YES; | |
059cb385 | 331 | |
36cf4507 ZJS |
332 | } else if (proc_cmdline_key_streq(key, "systemd.status_unit_format")) { |
333 | ||
334 | if (proc_cmdline_value_missing(key, value)) | |
335 | return 0; | |
336 | ||
337 | r = status_unit_format_from_string(value); | |
338 | if (r < 0) | |
339 | log_warning_errno(r, "Failed to parse %s=%s, ignoring: %m", key, value); | |
340 | else | |
341 | arg_status_unit_format = r; | |
342 | ||
1d84ad94 LP |
343 | } else if (proc_cmdline_key_streq(key, "systemd.default_standard_output")) { |
344 | ||
345 | if (proc_cmdline_value_missing(key, value)) | |
346 | return 0; | |
0a494f1f | 347 | |
059cb385 | 348 | r = exec_output_from_string(value); |
fb472900 | 349 | if (r < 0) |
5e1ee764 | 350 | log_warning_errno(r, "Failed to parse default standard output switch %s, ignoring: %m", value); |
0a494f1f | 351 | else |
c9e120e0 | 352 | arg_defaults.std_output = r; |
0a494f1f | 353 | |
1d84ad94 LP |
354 | } else if (proc_cmdline_key_streq(key, "systemd.default_standard_error")) { |
355 | ||
356 | if (proc_cmdline_value_missing(key, value)) | |
357 | return 0; | |
059cb385 LP |
358 | |
359 | r = exec_output_from_string(value); | |
fb472900 | 360 | if (r < 0) |
5e1ee764 | 361 | log_warning_errno(r, "Failed to parse default standard error switch %s, ignoring: %m", value); |
0a494f1f | 362 | else |
c9e120e0 | 363 | arg_defaults.std_error = r; |
9e7c5357 | 364 | |
1d84ad94 LP |
365 | } else if (streq(key, "systemd.setenv")) { |
366 | ||
367 | if (proc_cmdline_value_missing(key, value)) | |
368 | return 0; | |
059cb385 | 369 | |
b70935ac ZJS |
370 | if (!env_assignment_is_valid(value)) |
371 | log_warning("Environment variable assignment '%s' is not valid. Ignoring.", value); | |
372 | else { | |
373 | r = strv_env_replace_strdup(&arg_default_environment, value); | |
374 | if (r < 0) | |
1d84ad94 | 375 | return log_oom(); |
b70935ac | 376 | } |
9e58ff9c | 377 | |
1d84ad94 LP |
378 | } else if (proc_cmdline_key_streq(key, "systemd.machine_id")) { |
379 | ||
380 | if (proc_cmdline_value_missing(key, value)) | |
381 | return 0; | |
382 | ||
aea3f594 | 383 | r = id128_from_string_nonzero(value, &arg_machine_id); |
1d84ad94 | 384 | if (r < 0) |
5e1ee764 | 385 | log_warning_errno(r, "MachineID '%s' is not valid, ignoring: %m", value); |
ee48dbd5 | 386 | |
1d84ad94 LP |
387 | } else if (proc_cmdline_key_streq(key, "systemd.default_timeout_start_sec")) { |
388 | ||
389 | if (proc_cmdline_value_missing(key, value)) | |
390 | return 0; | |
391 | ||
c9e120e0 | 392 | r = parse_sec(value, &arg_defaults.timeout_start_usec); |
1d84ad94 | 393 | if (r < 0) |
5e1ee764 | 394 | log_warning_errno(r, "Failed to parse default start timeout '%s', ignoring: %m", value); |
1d84ad94 | 395 | |
c9e120e0 LP |
396 | if (arg_defaults.timeout_start_usec <= 0) |
397 | arg_defaults.timeout_start_usec = USEC_INFINITY; | |
ee48dbd5 | 398 | |
6b818cd7 DDM |
399 | } else if (proc_cmdline_key_streq(key, "systemd.default_device_timeout_sec")) { |
400 | ||
401 | if (proc_cmdline_value_missing(key, value)) | |
402 | return 0; | |
403 | ||
c9e120e0 | 404 | r = parse_sec(value, &arg_defaults.device_timeout_usec); |
6b818cd7 DDM |
405 | if (r < 0) |
406 | log_warning_errno(r, "Failed to parse default device timeout '%s', ignoring: %m", value); | |
407 | ||
c9e120e0 LP |
408 | if (arg_defaults.device_timeout_usec <= 0) |
409 | arg_defaults.device_timeout_usec = USEC_INFINITY; | |
6b818cd7 | 410 | |
68d58f38 LP |
411 | } else if (proc_cmdline_key_streq(key, "systemd.cpu_affinity")) { |
412 | ||
413 | if (proc_cmdline_value_missing(key, value)) | |
414 | return 0; | |
415 | ||
416 | r = parse_cpu_set(value, &arg_cpu_affinity); | |
417 | if (r < 0) | |
162392b7 | 418 | log_warning_errno(r, "Failed to parse CPU affinity mask '%s', ignoring: %m", value); |
68d58f38 | 419 | |
8a2c1fbf EJ |
420 | } else if (proc_cmdline_key_streq(key, "systemd.watchdog_device")) { |
421 | ||
422 | if (proc_cmdline_value_missing(key, value)) | |
423 | return 0; | |
424 | ||
614b022c | 425 | (void) parse_path_argument(value, false, &arg_watchdog_device); |
8a2c1fbf | 426 | |
b3aa73e4 FB |
427 | } else if (proc_cmdline_key_streq(key, "systemd.watchdog_sec")) { |
428 | ||
429 | if (proc_cmdline_value_missing(key, value)) | |
430 | return 0; | |
431 | ||
8a85c5b6 FB |
432 | if (streq(value, "default")) |
433 | arg_runtime_watchdog = USEC_INFINITY; | |
c91c95e6 LP |
434 | else if (streq(value, "off")) |
435 | arg_runtime_watchdog = 0; | |
8a85c5b6 FB |
436 | else { |
437 | r = parse_sec(value, &arg_runtime_watchdog); | |
438 | if (r < 0) { | |
439 | log_warning_errno(r, "Failed to parse systemd.watchdog_sec= argument '%s', ignoring: %m", value); | |
440 | return 0; | |
441 | } | |
442 | } | |
443 | ||
444 | arg_kexec_watchdog = arg_reboot_watchdog = arg_runtime_watchdog; | |
b3aa73e4 | 445 | |
5717062e CK |
446 | } else if (proc_cmdline_key_streq(key, "systemd.watchdog_pre_sec")) { |
447 | ||
448 | if (proc_cmdline_value_missing(key, value)) | |
449 | return 0; | |
450 | ||
451 | if (streq(value, "default")) | |
452 | arg_pretimeout_watchdog = USEC_INFINITY; | |
453 | else if (streq(value, "off")) | |
454 | arg_pretimeout_watchdog = 0; | |
455 | else { | |
456 | r = parse_sec(value, &arg_pretimeout_watchdog); | |
457 | if (r < 0) { | |
458 | log_warning_errno(r, "Failed to parse systemd.watchdog_pre_sec= argument '%s', ignoring: %m", value); | |
459 | return 0; | |
460 | } | |
461 | } | |
462 | ||
aff3a9e1 LB |
463 | } else if (proc_cmdline_key_streq(key, "systemd.watchdog_pretimeout_governor")) { |
464 | ||
465 | if (proc_cmdline_value_missing(key, value) || isempty(value)) { | |
466 | arg_watchdog_pretimeout_governor = mfree(arg_watchdog_pretimeout_governor); | |
467 | return 0; | |
468 | } | |
469 | ||
470 | if (!string_is_safe(value)) { | |
471 | log_warning("Watchdog pretimeout governor '%s' is not valid, ignoring.", value); | |
472 | return 0; | |
473 | } | |
474 | ||
475 | return free_and_strdup_warn(&arg_watchdog_pretimeout_governor, value); | |
476 | ||
3753325b LP |
477 | } else if (proc_cmdline_key_streq(key, "systemd.clock_usec")) { |
478 | ||
479 | if (proc_cmdline_value_missing(key, value)) | |
480 | return 0; | |
481 | ||
482 | r = safe_atou64(value, &arg_clock_usec); | |
483 | if (r < 0) | |
484 | log_warning_errno(r, "Failed to parse systemd.clock_usec= argument, ignoring: %s", value); | |
485 | ||
d247f232 LP |
486 | } else if (proc_cmdline_key_streq(key, "systemd.random_seed")) { |
487 | void *p; | |
488 | size_t sz; | |
489 | ||
490 | if (proc_cmdline_value_missing(key, value)) | |
491 | return 0; | |
492 | ||
bdd2036e | 493 | r = unbase64mem(value, &p, &sz); |
d247f232 LP |
494 | if (r < 0) |
495 | log_warning_errno(r, "Failed to parse systemd.random_seed= argument, ignoring: %s", value); | |
496 | ||
497 | free(arg_random_seed); | |
498 | arg_random_seed = sz > 0 ? p : mfree(p); | |
499 | arg_random_seed_size = sz; | |
500 | ||
856bfaeb LB |
501 | } else if (proc_cmdline_key_streq(key, "systemd.reload_limit_interval_sec")) { |
502 | ||
503 | if (proc_cmdline_value_missing(key, value)) | |
504 | return 0; | |
505 | ||
506 | r = parse_sec(value, &arg_reload_limit_interval_sec); | |
507 | if (r < 0) { | |
508 | log_warning_errno(r, "Failed to parse systemd.reload_limit_interval_sec= argument '%s', ignoring: %m", value); | |
509 | return 0; | |
510 | } | |
511 | ||
512 | } else if (proc_cmdline_key_streq(key, "systemd.reload_limit_burst")) { | |
513 | ||
514 | if (proc_cmdline_value_missing(key, value)) | |
515 | return 0; | |
516 | ||
517 | r = safe_atou(value, &arg_reload_limit_burst); | |
518 | if (r < 0) { | |
519 | log_warning_errno(r, "Failed to parse systemd.reload_limit_burst= argument '%s', ignoring: %m", value); | |
520 | return 0; | |
521 | } | |
522 | ||
059cb385 | 523 | } else if (streq(key, "quiet") && !value) { |
d7b15e0a | 524 | |
7a293242 | 525 | if (arg_show_status == _SHOW_STATUS_INVALID) |
0d066dd1 | 526 | arg_show_status = SHOW_STATUS_ERROR; |
059cb385 LP |
527 | |
528 | } else if (streq(key, "debug") && !value) { | |
d7b15e0a | 529 | |
1de1c9c3 LP |
530 | /* Note that log_parse_environment() handles 'debug' |
531 | * too, and sets the log level to LOG_DEBUG. */ | |
d7b15e0a | 532 | |
75f86906 | 533 | if (detect_container() > 0) |
b2103dcc | 534 | log_set_target(LOG_TARGET_CONSOLE); |
059cb385 | 535 | |
dcd61450 | 536 | } else if (!value) { |
e2c9a131 | 537 | const char *target; |
f170852a | 538 | |
ceae6295 | 539 | /* Compatible with SysV, but supported independently even if SysV compatibility is disabled. */ |
e2c9a131 EV |
540 | target = runlevel_to_target(key); |
541 | if (target) | |
cd57038a | 542 | return free_and_strdup_warn(&arg_default_unit, target); |
f170852a LP |
543 | } |
544 | ||
545 | return 0; | |
546 | } | |
547 | ||
e8e581bf ZJS |
548 | #define DEFINE_SETTER(name, func, descr) \ |
549 | static int name(const char *unit, \ | |
550 | const char *filename, \ | |
551 | unsigned line, \ | |
552 | const char *section, \ | |
71a61510 | 553 | unsigned section_line, \ |
e8e581bf ZJS |
554 | const char *lvalue, \ |
555 | int ltype, \ | |
556 | const char *rvalue, \ | |
557 | void *data, \ | |
558 | void *userdata) { \ | |
559 | \ | |
560 | int r; \ | |
561 | \ | |
562 | assert(filename); \ | |
563 | assert(lvalue); \ | |
564 | assert(rvalue); \ | |
565 | \ | |
566 | r = func(rvalue); \ | |
567 | if (r < 0) \ | |
d1cefe0a LP |
568 | log_syntax(unit, LOG_ERR, filename, line, r, \ |
569 | "Invalid " descr "'%s': %m", \ | |
570 | rvalue); \ | |
e8e581bf ZJS |
571 | \ |
572 | return 0; \ | |
573 | } | |
487393e9 | 574 | |
a6ecbf83 FB |
575 | DEFINE_SETTER(config_parse_level2, log_set_max_level_from_string, "log level"); |
576 | DEFINE_SETTER(config_parse_target, log_set_target_from_string, "target"); | |
c5673ed0 | 577 | DEFINE_SETTER(config_parse_color, log_show_color_from_string, "color"); |
a6ecbf83 | 578 | DEFINE_SETTER(config_parse_location, log_show_location_from_string, "location"); |
c5673ed0 | 579 | DEFINE_SETTER(config_parse_time, log_show_time_from_string, "time"); |
487393e9 | 580 | |
a61d6874 ZJS |
581 | static int config_parse_default_timeout_abort( |
582 | const char *unit, | |
583 | const char *filename, | |
584 | unsigned line, | |
585 | const char *section, | |
586 | unsigned section_line, | |
587 | const char *lvalue, | |
588 | int ltype, | |
589 | const char *rvalue, | |
590 | void *data, | |
591 | void *userdata) { | |
592 | int r; | |
593 | ||
c9e120e0 LP |
594 | r = config_parse_timeout_abort( |
595 | unit, | |
596 | filename, | |
597 | line, | |
598 | section, | |
599 | section_line, | |
600 | lvalue, | |
601 | ltype, | |
602 | rvalue, | |
603 | &arg_defaults.timeout_abort_usec, | |
604 | userdata); | |
a61d6874 | 605 | if (r >= 0) |
c9e120e0 | 606 | arg_defaults.timeout_abort_set = r; |
a61d6874 ZJS |
607 | return 0; |
608 | } | |
487393e9 | 609 | |
d4a402e4 LP |
610 | static int config_parse_oom_score_adjust( |
611 | const char *unit, | |
612 | const char *filename, | |
613 | unsigned line, | |
614 | const char *section, | |
615 | unsigned section_line, | |
616 | const char *lvalue, | |
617 | int ltype, | |
618 | const char *rvalue, | |
619 | void *data, | |
620 | void *userdata) { | |
621 | ||
622 | int oa, r; | |
623 | ||
624 | if (isempty(rvalue)) { | |
c9e120e0 | 625 | arg_defaults.oom_score_adjust_set = false; |
d4a402e4 LP |
626 | return 0; |
627 | } | |
628 | ||
629 | r = parse_oom_score_adjust(rvalue, &oa); | |
630 | if (r < 0) { | |
631 | log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse the OOM score adjust value '%s', ignoring: %m", rvalue); | |
632 | return 0; | |
633 | } | |
634 | ||
c9e120e0 LP |
635 | arg_defaults.oom_score_adjust = oa; |
636 | arg_defaults.oom_score_adjust_set = true; | |
d4a402e4 LP |
637 | |
638 | return 0; | |
639 | } | |
640 | ||
ffc1ec73 LP |
641 | static int config_parse_protect_system_pid1( |
642 | const char *unit, | |
643 | const char *filename, | |
644 | unsigned line, | |
645 | const char *section, | |
646 | unsigned section_line, | |
647 | const char *lvalue, | |
648 | int ltype, | |
649 | const char *rvalue, | |
650 | void *data, | |
651 | void *userdata) { | |
652 | ||
653 | int *v = ASSERT_PTR(data), r; | |
654 | ||
655 | /* This is modelled after the per-service ProtectSystem= setting, but a bit more restricted on one | |
656 | * hand, and more automatic in another. i.e. we currently only support yes/no (not "strict" or | |
657 | * "full"). And we will enable this automatically for the initrd unless configured otherwise. | |
658 | * | |
659 | * We might extend this later to match more closely what the per-service ProtectSystem= can do, but | |
660 | * this is not trivial, due to ordering constraints: besides /usr/ we don't really have much mounted | |
661 | * at the moment we enable this logic. */ | |
662 | ||
663 | if (isempty(rvalue) || streq(rvalue, "auto")) { | |
664 | *v = -1; | |
665 | return 0; | |
666 | } | |
667 | ||
668 | r = parse_boolean(rvalue); | |
669 | if (r < 0) { | |
670 | log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse ProtectSystem= argument '%s', ignoring: %m", rvalue); | |
671 | return 0; | |
672 | } | |
673 | ||
674 | *v = r; | |
675 | return 0; | |
676 | } | |
677 | ||
7a66f215 DDM |
678 | static int config_parse_crash_reboot( |
679 | const char *unit, | |
680 | const char *filename, | |
681 | unsigned line, | |
682 | const char *section, | |
683 | unsigned section_line, | |
684 | const char *lvalue, | |
685 | int ltype, | |
686 | const char *rvalue, | |
687 | void *data, | |
688 | void *userdata) { | |
689 | ||
690 | CrashAction *v = ASSERT_PTR(data); | |
691 | int r; | |
692 | ||
693 | if (isempty(rvalue)) { | |
694 | *v = CRASH_REBOOT; | |
695 | return 0; | |
696 | } | |
697 | ||
698 | r = parse_boolean(rvalue); | |
699 | if (r < 0) { | |
700 | log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse CrashReboot= argument '%s', ignoring: %m", rvalue); | |
701 | return 0; | |
702 | } | |
703 | ||
704 | *v = r > 0 ? CRASH_REBOOT : CRASH_FREEZE; | |
705 | return 0; | |
706 | } | |
707 | ||
a61d6874 | 708 | static int parse_config_file(void) { |
f975e971 | 709 | const ConfigTableItem items[] = { |
3f87eaa5 YW |
710 | { "Manager", "LogLevel", config_parse_level2, 0, NULL }, |
711 | { "Manager", "LogTarget", config_parse_target, 0, NULL }, | |
712 | { "Manager", "LogColor", config_parse_color, 0, NULL }, | |
713 | { "Manager", "LogLocation", config_parse_location, 0, NULL }, | |
714 | { "Manager", "LogTime", config_parse_time, 0, NULL }, | |
715 | { "Manager", "DumpCore", config_parse_bool, 0, &arg_dump_core }, | |
716 | { "Manager", "CrashChVT", /* legacy */ config_parse_crash_chvt, 0, &arg_crash_chvt }, | |
717 | { "Manager", "CrashChangeVT", config_parse_crash_chvt, 0, &arg_crash_chvt }, | |
718 | { "Manager", "CrashShell", config_parse_bool, 0, &arg_crash_shell }, | |
7a66f215 DDM |
719 | { "Manager", "CrashReboot", config_parse_crash_reboot, 0, &arg_crash_action }, |
720 | { "Manager", "CrashAction", config_parse_crash_action, 0, &arg_crash_action }, | |
3f87eaa5 YW |
721 | { "Manager", "ShowStatus", config_parse_show_status, 0, &arg_show_status }, |
722 | { "Manager", "StatusUnitFormat", config_parse_status_unit_format, 0, &arg_status_unit_format }, | |
723 | { "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, &arg_cpu_affinity }, | |
724 | { "Manager", "NUMAPolicy", config_parse_numa_policy, 0, &arg_numa_policy.type }, | |
725 | { "Manager", "NUMAMask", config_parse_numa_mask, 0, &arg_numa_policy }, | |
62b5bd3c | 726 | { "Manager", "JoinControllers", config_parse_warn_compat, DISABLED_LEGACY, NULL }, |
3f87eaa5 YW |
727 | { "Manager", "RuntimeWatchdogSec", config_parse_watchdog_sec, 0, &arg_runtime_watchdog }, |
728 | { "Manager", "RuntimeWatchdogPreSec", config_parse_watchdog_sec, 0, &arg_pretimeout_watchdog }, | |
729 | { "Manager", "RebootWatchdogSec", config_parse_watchdog_sec, 0, &arg_reboot_watchdog }, | |
730 | { "Manager", "ShutdownWatchdogSec", config_parse_watchdog_sec, 0, &arg_reboot_watchdog }, /* obsolete alias */ | |
731 | { "Manager", "KExecWatchdogSec", config_parse_watchdog_sec, 0, &arg_kexec_watchdog }, | |
732 | { "Manager", "WatchdogDevice", config_parse_path, 0, &arg_watchdog_device }, | |
733 | { "Manager", "RuntimeWatchdogPreGovernor", config_parse_string, CONFIG_PARSE_STRING_SAFE, &arg_watchdog_pretimeout_governor }, | |
734 | { "Manager", "CapabilityBoundingSet", config_parse_capability_set, 0, &arg_capability_bounding_set }, | |
735 | { "Manager", "NoNewPrivileges", config_parse_bool, 0, &arg_no_new_privs }, | |
ffc1ec73 | 736 | { "Manager", "ProtectSystem", config_parse_protect_system_pid1, 0, &arg_protect_system }, |
349cc4a5 | 737 | #if HAVE_SECCOMP |
3f87eaa5 | 738 | { "Manager", "SystemCallArchitectures", config_parse_syscall_archs, 0, &arg_syscall_archs }, |
6aa2c555 LP |
739 | #else |
740 | { "Manager", "SystemCallArchitectures", config_parse_warn_compat, DISABLED_CONFIGURATION, NULL }, | |
741 | ||
89fffa27 | 742 | #endif |
3f87eaa5 | 743 | { "Manager", "TimerSlackNSec", config_parse_nsec, 0, &arg_timer_slack_nsec }, |
c9e120e0 LP |
744 | { "Manager", "DefaultTimerAccuracySec", config_parse_sec, 0, &arg_defaults.timer_accuracy_usec }, |
745 | { "Manager", "DefaultStandardOutput", config_parse_output_restricted, 0, &arg_defaults.std_output }, | |
746 | { "Manager", "DefaultStandardError", config_parse_output_restricted, 0, &arg_defaults.std_error }, | |
747 | { "Manager", "DefaultTimeoutStartSec", config_parse_sec, 0, &arg_defaults.timeout_start_usec }, | |
748 | { "Manager", "DefaultTimeoutStopSec", config_parse_sec, 0, &arg_defaults.timeout_stop_usec }, | |
3f87eaa5 | 749 | { "Manager", "DefaultTimeoutAbortSec", config_parse_default_timeout_abort, 0, NULL }, |
c9e120e0 LP |
750 | { "Manager", "DefaultDeviceTimeoutSec", config_parse_sec, 0, &arg_defaults.device_timeout_usec }, |
751 | { "Manager", "DefaultRestartSec", config_parse_sec, 0, &arg_defaults.restart_usec }, | |
752 | { "Manager", "DefaultStartLimitInterval", config_parse_sec, 0, &arg_defaults.start_limit_interval}, /* obsolete alias */ | |
753 | { "Manager", "DefaultStartLimitIntervalSec", config_parse_sec, 0, &arg_defaults.start_limit_interval}, | |
754 | { "Manager", "DefaultStartLimitBurst", config_parse_unsigned, 0, &arg_defaults.start_limit_burst }, | |
4870133b LP |
755 | { "Manager", "DefaultEnvironment", config_parse_environ, arg_runtime_scope, &arg_default_environment }, |
756 | { "Manager", "ManagerEnvironment", config_parse_environ, arg_runtime_scope, &arg_manager_environment }, | |
c9e120e0 LP |
757 | { "Manager", "DefaultLimitCPU", config_parse_rlimit, RLIMIT_CPU, arg_defaults.rlimit }, |
758 | { "Manager", "DefaultLimitFSIZE", config_parse_rlimit, RLIMIT_FSIZE, arg_defaults.rlimit }, | |
759 | { "Manager", "DefaultLimitDATA", config_parse_rlimit, RLIMIT_DATA, arg_defaults.rlimit }, | |
760 | { "Manager", "DefaultLimitSTACK", config_parse_rlimit, RLIMIT_STACK, arg_defaults.rlimit }, | |
761 | { "Manager", "DefaultLimitCORE", config_parse_rlimit, RLIMIT_CORE, arg_defaults.rlimit }, | |
762 | { "Manager", "DefaultLimitRSS", config_parse_rlimit, RLIMIT_RSS, arg_defaults.rlimit }, | |
763 | { "Manager", "DefaultLimitNOFILE", config_parse_rlimit, RLIMIT_NOFILE, arg_defaults.rlimit }, | |
764 | { "Manager", "DefaultLimitAS", config_parse_rlimit, RLIMIT_AS, arg_defaults.rlimit }, | |
765 | { "Manager", "DefaultLimitNPROC", config_parse_rlimit, RLIMIT_NPROC, arg_defaults.rlimit }, | |
766 | { "Manager", "DefaultLimitMEMLOCK", config_parse_rlimit, RLIMIT_MEMLOCK, arg_defaults.rlimit }, | |
767 | { "Manager", "DefaultLimitLOCKS", config_parse_rlimit, RLIMIT_LOCKS, arg_defaults.rlimit }, | |
768 | { "Manager", "DefaultLimitSIGPENDING", config_parse_rlimit, RLIMIT_SIGPENDING, arg_defaults.rlimit }, | |
769 | { "Manager", "DefaultLimitMSGQUEUE", config_parse_rlimit, RLIMIT_MSGQUEUE, arg_defaults.rlimit }, | |
770 | { "Manager", "DefaultLimitNICE", config_parse_rlimit, RLIMIT_NICE, arg_defaults.rlimit }, | |
771 | { "Manager", "DefaultLimitRTPRIO", config_parse_rlimit, RLIMIT_RTPRIO, arg_defaults.rlimit }, | |
772 | { "Manager", "DefaultLimitRTTIME", config_parse_rlimit, RLIMIT_RTTIME, arg_defaults.rlimit }, | |
773 | { "Manager", "DefaultCPUAccounting", config_parse_bool, 0, &arg_defaults.cpu_accounting }, | |
774 | { "Manager", "DefaultIOAccounting", config_parse_bool, 0, &arg_defaults.io_accounting }, | |
775 | { "Manager", "DefaultIPAccounting", config_parse_bool, 0, &arg_defaults.ip_accounting }, | |
776 | { "Manager", "DefaultBlockIOAccounting", config_parse_bool, 0, &arg_defaults.blockio_accounting }, | |
777 | { "Manager", "DefaultMemoryAccounting", config_parse_bool, 0, &arg_defaults.memory_accounting }, | |
778 | { "Manager", "DefaultTasksAccounting", config_parse_bool, 0, &arg_defaults.tasks_accounting }, | |
779 | { "Manager", "DefaultTasksMax", config_parse_tasks_max, 0, &arg_defaults.tasks_max }, | |
780 | { "Manager", "DefaultMemoryPressureThresholdSec", config_parse_sec, 0, &arg_defaults.memory_pressure_threshold_usec }, | |
781 | { "Manager", "DefaultMemoryPressureWatch", config_parse_memory_pressure_watch, 0, &arg_defaults.memory_pressure_watch }, | |
4870133b | 782 | { "Manager", "CtrlAltDelBurstAction", config_parse_emergency_action, arg_runtime_scope, &arg_cad_burst_action }, |
c9e120e0 | 783 | { "Manager", "DefaultOOMPolicy", config_parse_oom_policy, 0, &arg_defaults.oom_policy }, |
3f87eaa5 | 784 | { "Manager", "DefaultOOMScoreAdjust", config_parse_oom_score_adjust, 0, NULL }, |
856bfaeb LB |
785 | { "Manager", "ReloadLimitIntervalSec", config_parse_sec, 0, &arg_reload_limit_interval_sec }, |
786 | { "Manager", "ReloadLimitBurst", config_parse_unsigned, 0, &arg_reload_limit_burst }, | |
aa5ae971 | 787 | #if ENABLE_SMACK |
c9e120e0 | 788 | { "Manager", "DefaultSmackProcessLabel", config_parse_string, 0, &arg_defaults.smack_process_label }, |
aa5ae971 ŁS |
789 | #else |
790 | { "Manager", "DefaultSmackProcessLabel", config_parse_warn_compat, DISABLED_CONFIGURATION, NULL }, | |
791 | #endif | |
d3b1c508 | 792 | {} |
487393e9 LP |
793 | }; |
794 | ||
4870133b | 795 | if (arg_runtime_scope == RUNTIME_SCOPE_SYSTEM) |
6378f257 ZJS |
796 | (void) config_parse_standard_file_with_dropins( |
797 | "systemd/system.conf", | |
798 | "Manager\0", | |
799 | config_item_table_lookup, items, | |
800 | CONFIG_PARSE_WARN, | |
801 | /* userdata= */ NULL); | |
e94a009c | 802 | else { |
07e0ffc8 FB |
803 | _cleanup_strv_free_ char **files = NULL, **dirs = NULL; |
804 | int r; | |
805 | ||
4870133b LP |
806 | assert(arg_runtime_scope == RUNTIME_SCOPE_USER); |
807 | ||
e94a009c | 808 | r = manager_find_user_config_paths(&files, &dirs); |
f70e6fb4 ZJS |
809 | if (r < 0) |
810 | return log_error_errno(r, "Failed to determine config file paths: %m"); | |
e94a009c | 811 | |
07e0ffc8 FB |
812 | (void) config_parse_many( |
813 | (const char* const*) files, | |
814 | (const char* const*) dirs, | |
815 | "user.conf.d", | |
947f59ba | 816 | /* root = */ NULL, |
07e0ffc8 FB |
817 | "Manager\0", |
818 | config_item_table_lookup, items, | |
819 | CONFIG_PARSE_WARN, | |
820 | NULL, NULL, NULL); | |
f70e6fb4 | 821 | } |
75eb6154 | 822 | |
f70e6fb4 ZJS |
823 | /* Traditionally "0" was used to turn off the default unit timeouts. Fix this up so that we use |
824 | * USEC_INFINITY like everywhere else. */ | |
c9e120e0 LP |
825 | if (arg_defaults.timeout_start_usec <= 0) |
826 | arg_defaults.timeout_start_usec = USEC_INFINITY; | |
827 | if (arg_defaults.timeout_stop_usec <= 0) | |
828 | arg_defaults.timeout_stop_usec = USEC_INFINITY; | |
487393e9 | 829 | |
487393e9 LP |
830 | return 0; |
831 | } | |
832 | ||
85cb4151 | 833 | static void set_manager_defaults(Manager *m) { |
bfb27b06 | 834 | int r; |
06af2a04 TB |
835 | |
836 | assert(m); | |
837 | ||
bfb27b06 LP |
838 | /* Propagates the various default unit property settings into the manager object, i.e. properties |
839 | * that do not affect the manager itself, but are just what newly allocated units will have set if | |
840 | * they haven't set anything else. (Also see set_manager_settings() for the settings that affect the | |
841 | * manager's own behaviour) */ | |
842 | ||
843 | r = manager_set_unit_defaults(m, &arg_defaults); | |
844 | if (r < 0) | |
845 | log_warning_errno(r, "Failed to set manager defaults, ignoring: %m"); | |
846 | ||
847 | r = manager_default_environment(m); | |
848 | if (r < 0) | |
849 | log_warning_errno(r, "Failed to set manager default environment, ignoring: %m"); | |
850 | ||
851 | r = manager_transient_environment_add(m, arg_default_environment); | |
852 | if (r < 0) | |
853 | log_warning_errno(r, "Failed to add to transient environment, ignoring: %m"); | |
06af2a04 TB |
854 | } |
855 | ||
7b46fc6a | 856 | static void set_manager_settings(Manager *m) { |
aff3a9e1 | 857 | int r; |
7b46fc6a LP |
858 | |
859 | assert(m); | |
860 | ||
986935cf FB |
861 | /* Propagates the various manager settings into the manager object, i.e. properties that |
862 | * effect the manager itself (as opposed to just being inherited into newly allocated | |
863 | * units, see set_manager_defaults() above). */ | |
5b65ae15 | 864 | |
7b46fc6a | 865 | m->confirm_spawn = arg_confirm_spawn; |
2a12e32e | 866 | m->service_watchdogs = arg_service_watchdogs; |
7b46fc6a | 867 | m->cad_burst_action = arg_cad_burst_action; |
856bfaeb LB |
868 | /* Note that we don't do structured initialization here, otherwise it will reset the rate limit |
869 | * counter on every daemon-reload. */ | |
8312b17a LB |
870 | m->reload_reexec_ratelimit.interval = arg_reload_limit_interval_sec; |
871 | m->reload_reexec_ratelimit.burst = arg_reload_limit_burst; | |
7b46fc6a | 872 | |
986935cf FB |
873 | manager_set_watchdog(m, WATCHDOG_RUNTIME, arg_runtime_watchdog); |
874 | manager_set_watchdog(m, WATCHDOG_REBOOT, arg_reboot_watchdog); | |
875 | manager_set_watchdog(m, WATCHDOG_KEXEC, arg_kexec_watchdog); | |
5717062e | 876 | manager_set_watchdog(m, WATCHDOG_PRETIMEOUT, arg_pretimeout_watchdog); |
aff3a9e1 LB |
877 | r = manager_set_watchdog_pretimeout_governor(m, arg_watchdog_pretimeout_governor); |
878 | if (r < 0) | |
879 | log_warning_errno(r, "Failed to set watchdog pretimeout governor to '%s', ignoring: %m", arg_watchdog_pretimeout_governor); | |
986935cf | 880 | |
7c52d523 | 881 | manager_set_show_status(m, arg_show_status, "command line"); |
36cf4507 | 882 | m->status_unit_format = arg_status_unit_format; |
7b46fc6a LP |
883 | } |
884 | ||
f170852a | 885 | static int parse_argv(int argc, char *argv[]) { |
f170852a | 886 | enum { |
6339d3e6 YW |
887 | COMMON_GETOPT_ARGS, |
888 | SYSTEMD_GETOPT_ARGS, | |
f170852a LP |
889 | }; |
890 | ||
891 | static const struct option options[] = { | |
6339d3e6 YW |
892 | COMMON_GETOPT_OPTIONS, |
893 | SYSTEMD_GETOPT_OPTIONS, | |
fb472900 | 894 | {} |
f170852a LP |
895 | }; |
896 | ||
897 | int c, r; | |
9a9ca408 | 898 | bool user_arg_seen = false; |
f170852a LP |
899 | |
900 | assert(argc >= 1); | |
901 | assert(argv); | |
902 | ||
df0ff127 | 903 | if (getpid_cached() == 1) |
b770165a LP |
904 | opterr = 0; |
905 | ||
6339d3e6 | 906 | while ((c = getopt_long(argc, argv, SYSTEMD_GETOPT_SHORT_OPTIONS, options, NULL)) >= 0) |
f170852a LP |
907 | |
908 | switch (c) { | |
909 | ||
910 | case ARG_LOG_LEVEL: | |
fb472900 | 911 | r = log_set_max_level_from_string(optarg); |
2b5107e1 ZJS |
912 | if (r < 0) |
913 | return log_error_errno(r, "Failed to parse log level \"%s\": %m", optarg); | |
f170852a LP |
914 | |
915 | break; | |
916 | ||
917 | case ARG_LOG_TARGET: | |
fb472900 | 918 | r = log_set_target_from_string(optarg); |
2b5107e1 ZJS |
919 | if (r < 0) |
920 | return log_error_errno(r, "Failed to parse log target \"%s\": %m", optarg); | |
f170852a LP |
921 | |
922 | break; | |
923 | ||
bbe63281 LP |
924 | case ARG_LOG_COLOR: |
925 | ||
d0b170c8 | 926 | if (optarg) { |
fb472900 | 927 | r = log_show_color_from_string(optarg); |
2b5107e1 ZJS |
928 | if (r < 0) |
929 | return log_error_errno(r, "Failed to parse log color setting \"%s\": %m", | |
930 | optarg); | |
d0b170c8 LP |
931 | } else |
932 | log_show_color(true); | |
bbe63281 LP |
933 | |
934 | break; | |
935 | ||
936 | case ARG_LOG_LOCATION: | |
d0b170c8 | 937 | if (optarg) { |
fb472900 | 938 | r = log_show_location_from_string(optarg); |
2b5107e1 ZJS |
939 | if (r < 0) |
940 | return log_error_errno(r, "Failed to parse log location setting \"%s\": %m", | |
941 | optarg); | |
d0b170c8 LP |
942 | } else |
943 | log_show_location(true); | |
bbe63281 LP |
944 | |
945 | break; | |
946 | ||
c5673ed0 DS |
947 | case ARG_LOG_TIME: |
948 | ||
949 | if (optarg) { | |
950 | r = log_show_time_from_string(optarg); | |
951 | if (r < 0) | |
952 | return log_error_errno(r, "Failed to parse log time setting \"%s\": %m", | |
953 | optarg); | |
954 | } else | |
955 | log_show_time(true); | |
956 | ||
957 | break; | |
958 | ||
0a494f1f | 959 | case ARG_DEFAULT_STD_OUTPUT: |
fb472900 | 960 | r = exec_output_from_string(optarg); |
2b5107e1 ZJS |
961 | if (r < 0) |
962 | return log_error_errno(r, "Failed to parse default standard output setting \"%s\": %m", | |
963 | optarg); | |
c9e120e0 | 964 | arg_defaults.std_output = r; |
0a494f1f LP |
965 | break; |
966 | ||
967 | case ARG_DEFAULT_STD_ERROR: | |
fb472900 | 968 | r = exec_output_from_string(optarg); |
2b5107e1 ZJS |
969 | if (r < 0) |
970 | return log_error_errno(r, "Failed to parse default standard error output setting \"%s\": %m", | |
971 | optarg); | |
c9e120e0 | 972 | arg_defaults.std_error = r; |
0a494f1f LP |
973 | break; |
974 | ||
2f198e2f | 975 | case ARG_UNIT: |
e6e242ad | 976 | r = free_and_strdup(&arg_default_unit, optarg); |
23bbb0de | 977 | if (r < 0) |
2b5107e1 | 978 | return log_error_errno(r, "Failed to set default unit \"%s\": %m", optarg); |
f170852a LP |
979 | |
980 | break; | |
981 | ||
edb9aaa8 | 982 | case ARG_SYSTEM: |
4870133b | 983 | arg_runtime_scope = RUNTIME_SCOPE_SYSTEM; |
edb9aaa8 | 984 | break; |
a5dab5ce | 985 | |
af2d49f7 | 986 | case ARG_USER: |
4870133b | 987 | arg_runtime_scope = RUNTIME_SCOPE_USER; |
9a9ca408 | 988 | user_arg_seen = true; |
a5dab5ce | 989 | break; |
a5dab5ce | 990 | |
e965d56d | 991 | case ARG_TEST: |
fa0f4d8a | 992 | arg_action = ACTION_TEST; |
b87c2aa6 ZJS |
993 | break; |
994 | ||
995 | case ARG_NO_PAGER: | |
0221d68a | 996 | arg_pager_flags |= PAGER_DISABLE; |
e965d56d LP |
997 | break; |
998 | ||
9ba0bc4e ZJS |
999 | case ARG_VERSION: |
1000 | arg_action = ACTION_VERSION; | |
1001 | break; | |
1002 | ||
e537352b | 1003 | case ARG_DUMP_CONFIGURATION_ITEMS: |
fa0f4d8a | 1004 | arg_action = ACTION_DUMP_CONFIGURATION_ITEMS; |
e537352b LP |
1005 | break; |
1006 | ||
bbc1acab YW |
1007 | case ARG_DUMP_BUS_PROPERTIES: |
1008 | arg_action = ACTION_DUMP_BUS_PROPERTIES; | |
1009 | break; | |
1010 | ||
5c08257b ZJS |
1011 | case ARG_BUS_INTROSPECT: |
1012 | arg_bus_introspect = optarg; | |
1013 | arg_action = ACTION_BUS_INTROSPECT; | |
1014 | break; | |
1015 | ||
9e58ff9c | 1016 | case ARG_DUMP_CORE: |
599c7c54 ZJS |
1017 | r = parse_boolean_argument("--dump-core", optarg, &arg_dump_core); |
1018 | if (r < 0) | |
1019 | return r; | |
b9e74c39 LP |
1020 | break; |
1021 | ||
1022 | case ARG_CRASH_CHVT: | |
a07a7324 | 1023 | r = parse_crash_chvt(optarg, &arg_crash_chvt); |
b9e74c39 | 1024 | if (r < 0) |
2b5107e1 ZJS |
1025 | return log_error_errno(r, "Failed to parse crash virtual terminal index: \"%s\": %m", |
1026 | optarg); | |
9e58ff9c LP |
1027 | break; |
1028 | ||
1029 | case ARG_CRASH_SHELL: | |
599c7c54 ZJS |
1030 | r = parse_boolean_argument("--crash-shell", optarg, &arg_crash_shell); |
1031 | if (r < 0) | |
1032 | return r; | |
b9e74c39 LP |
1033 | break; |
1034 | ||
1035 | case ARG_CRASH_REBOOT: | |
7a66f215 | 1036 | r = parse_boolean_argument("--crash-reboot", optarg, NULL); |
599c7c54 ZJS |
1037 | if (r < 0) |
1038 | return r; | |
7a66f215 DDM |
1039 | arg_crash_action = r > 0 ? CRASH_REBOOT : CRASH_FREEZE; |
1040 | break; | |
1041 | ||
1042 | case ARG_CRASH_ACTION: | |
1043 | r = crash_action_from_string(optarg); | |
1044 | if (r < 0) | |
1045 | return log_error_errno(r, "Failed to parse crash action \"%s\": %m", optarg); | |
1046 | arg_crash_action = r; | |
9e58ff9c LP |
1047 | break; |
1048 | ||
80876c20 | 1049 | case ARG_CONFIRM_SPAWN: |
7d5ceb64 FB |
1050 | arg_confirm_spawn = mfree(arg_confirm_spawn); |
1051 | ||
1052 | r = parse_confirm_spawn(optarg, &arg_confirm_spawn); | |
1053 | if (r < 0) | |
2b5107e1 ZJS |
1054 | return log_error_errno(r, "Failed to parse confirm spawn option: \"%s\": %m", |
1055 | optarg); | |
80876c20 LP |
1056 | break; |
1057 | ||
2a12e32e | 1058 | case ARG_SERVICE_WATCHDOGS: |
599c7c54 | 1059 | r = parse_boolean_argument("--service-watchdogs=", optarg, &arg_service_watchdogs); |
2a12e32e | 1060 | if (r < 0) |
599c7c54 | 1061 | return r; |
2a12e32e JK |
1062 | break; |
1063 | ||
9e58ff9c | 1064 | case ARG_SHOW_STATUS: |
d450b6f2 ZJS |
1065 | if (optarg) { |
1066 | r = parse_show_status(optarg, &arg_show_status); | |
ac7ec288 | 1067 | if (r < 0) |
2b5107e1 ZJS |
1068 | return log_error_errno(r, "Failed to parse show status boolean: \"%s\": %m", |
1069 | optarg); | |
d450b6f2 ZJS |
1070 | } else |
1071 | arg_show_status = SHOW_STATUS_YES; | |
6e98720f | 1072 | break; |
a5d87bf0 | 1073 | |
a16e1123 LP |
1074 | case ARG_DESERIALIZE: { |
1075 | int fd; | |
1076 | FILE *f; | |
1077 | ||
e652663a | 1078 | fd = parse_fd(optarg); |
baaa35ad | 1079 | if (fd < 0) |
d2132d3d | 1080 | return log_error_errno(fd, "Failed to parse serialization fd \"%s\": %m", optarg); |
a16e1123 | 1081 | |
b9e74c39 | 1082 | (void) fd_cloexec(fd, true); |
01e10de3 LP |
1083 | |
1084 | f = fdopen(fd, "r"); | |
4a62c710 | 1085 | if (!f) |
2b5107e1 | 1086 | return log_error_errno(errno, "Failed to open serialization fd %d: %m", fd); |
a16e1123 | 1087 | |
74ca738f | 1088 | safe_fclose(arg_serialization); |
d3b1c508 | 1089 | arg_serialization = f; |
a16e1123 LP |
1090 | |
1091 | break; | |
1092 | } | |
1093 | ||
2660882b | 1094 | case ARG_SWITCHED_ROOT: |
bf4df7c3 | 1095 | arg_switched_root = true; |
d03bc1b8 HH |
1096 | break; |
1097 | ||
ee48dbd5 | 1098 | case ARG_MACHINE_ID: |
aea3f594 | 1099 | r = id128_from_string_nonzero(optarg, &arg_machine_id); |
54500613 | 1100 | if (r < 0) |
2b5107e1 | 1101 | return log_error_errno(r, "MachineID '%s' is not valid: %m", optarg); |
ee48dbd5 NC |
1102 | break; |
1103 | ||
f170852a | 1104 | case 'h': |
fa0f4d8a | 1105 | arg_action = ACTION_HELP; |
f170852a LP |
1106 | break; |
1107 | ||
1d2e23ab LP |
1108 | case 'D': |
1109 | log_set_max_level(LOG_DEBUG); | |
1110 | break; | |
1111 | ||
099663ff LP |
1112 | case 'b': |
1113 | case 's': | |
1114 | case 'z': | |
cd57038a ZJS |
1115 | /* Just to eat away the sysvinit kernel cmdline args that we'll parse in |
1116 | * parse_proc_cmdline_item() or ignore, without any getopt() error messages. | |
1117 | */ | |
099663ff | 1118 | case '?': |
df0ff127 | 1119 | if (getpid_cached() != 1) |
099663ff | 1120 | return -EINVAL; |
601185b4 ZJS |
1121 | else |
1122 | return 0; | |
099663ff | 1123 | |
601185b4 | 1124 | default: |
04499a70 | 1125 | assert_not_reached(); |
f170852a LP |
1126 | } |
1127 | ||
d7a0f1f4 | 1128 | if (optind < argc && getpid_cached() != 1) |
9a9ca408 ZJS |
1129 | /* Hmm, when we aren't run as init system let's complain about excess arguments */ |
1130 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Excess arguments."); | |
1131 | ||
4870133b | 1132 | if (arg_action == ACTION_RUN && arg_runtime_scope == RUNTIME_SCOPE_USER && !user_arg_seen) |
baaa35ad | 1133 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
9a9ca408 | 1134 | "Explicit --user argument required to run as user manager."); |
d821e6d6 | 1135 | |
f170852a LP |
1136 | return 0; |
1137 | } | |
1138 | ||
1139 | static int help(void) { | |
37ec0fdd LP |
1140 | _cleanup_free_ char *link = NULL; |
1141 | int r; | |
1142 | ||
1143 | r = terminal_urlify_man("systemd", "1", &link); | |
1144 | if (r < 0) | |
1145 | return log_oom(); | |
f170852a | 1146 | |
2e33c433 | 1147 | printf("%s [OPTIONS...]\n\n" |
7ae47326 ZJS |
1148 | "%sStarts and monitors system and user services.%s\n\n" |
1149 | "This program takes no positional arguments.\n\n" | |
1150 | "%sOptions%s:\n" | |
e537352b | 1151 | " -h --help Show this help\n" |
cb4069d9 | 1152 | " --version Show version\n" |
cd69e88b | 1153 | " --test Determine initial transaction, dump it and exit\n" |
03b3b55e ZJS |
1154 | " --system Combined with --test: operate in system mode\n" |
1155 | " --user Combined with --test: operate in user mode\n" | |
80876c20 | 1156 | " --dump-configuration-items Dump understood unit configuration items\n" |
bbc1acab | 1157 | " --dump-bus-properties Dump exposed bus properties\n" |
5c08257b | 1158 | " --bus-introspect=PATH Write XML introspection data\n" |
9e58ff9c | 1159 | " --unit=UNIT Set default unit\n" |
b9e74c39 LP |
1160 | " --dump-core[=BOOL] Dump core on crash\n" |
1161 | " --crash-vt=NR Change to specified VT on crash\n" | |
7a66f215 | 1162 | " --crash-action=ACTION Specify what to do on crash\n" |
b9e74c39 LP |
1163 | " --crash-shell[=BOOL] Run shell on crash\n" |
1164 | " --confirm-spawn[=BOOL] Ask for confirmation when spawning processes\n" | |
03b3b55e ZJS |
1165 | " --show-status[=BOOL] Show status updates on the console during boot\n" |
1166 | " --log-target=TARGET Set log target (console, journal, kmsg,\n" | |
1167 | " journal-or-kmsg, null)\n" | |
1168 | " --log-level=LEVEL Set log level (debug, info, notice, warning,\n" | |
1169 | " err, crit, alert, emerg)\n" | |
b9e74c39 LP |
1170 | " --log-color[=BOOL] Highlight important log messages\n" |
1171 | " --log-location[=BOOL] Include code location in log messages\n" | |
c5673ed0 | 1172 | " --log-time[=BOOL] Prefix log messages with current time\n" |
0a494f1f | 1173 | " --default-standard-output= Set default standard output for services\n" |
37ec0fdd | 1174 | " --default-standard-error= Set default standard error output for services\n" |
03b3b55e | 1175 | " --no-pager Do not pipe output into a pager\n" |
bc556335 DDM |
1176 | "\nSee the %s for details.\n", |
1177 | program_invocation_short_name, | |
1178 | ansi_highlight(), | |
1179 | ansi_normal(), | |
1180 | ansi_underline(), | |
1181 | ansi_normal(), | |
1182 | link); | |
f170852a LP |
1183 | |
1184 | return 0; | |
1185 | } | |
1186 | ||
2cc856ac LP |
1187 | static int prepare_reexecute( |
1188 | Manager *m, | |
1189 | FILE **ret_f, | |
1190 | FDSet **ret_fds, | |
1191 | bool switching_root) { | |
1192 | ||
48b90859 LP |
1193 | _cleanup_fdset_free_ FDSet *fds = NULL; |
1194 | _cleanup_fclose_ FILE *f = NULL; | |
a16e1123 LP |
1195 | int r; |
1196 | ||
1197 | assert(m); | |
2cc856ac LP |
1198 | assert(ret_f); |
1199 | assert(ret_fds); | |
a16e1123 | 1200 | |
6b78f9b4 | 1201 | r = manager_open_serialization(m, &f); |
48b90859 LP |
1202 | if (r < 0) |
1203 | return log_error_errno(r, "Failed to create serialization file: %m"); | |
a16e1123 | 1204 | |
71445ae7 | 1205 | /* Make sure nothing is really destructed when we shut down */ |
313cefa1 | 1206 | m->n_reloading++; |
718db961 | 1207 | bus_manager_send_reloading(m, true); |
71445ae7 | 1208 | |
6b78f9b4 | 1209 | fds = fdset_new(); |
48b90859 LP |
1210 | if (!fds) |
1211 | return log_oom(); | |
a16e1123 | 1212 | |
b3680f49 | 1213 | r = manager_serialize(m, f, fds, switching_root); |
48b90859 | 1214 | if (r < 0) |
d68c645b | 1215 | return r; |
a16e1123 | 1216 | |
86cbbc6d | 1217 | if (fseeko(f, 0, SEEK_SET) < 0) |
48b90859 | 1218 | return log_error_errno(errno, "Failed to rewind serialization fd: %m"); |
a16e1123 | 1219 | |
6b78f9b4 | 1220 | r = fd_cloexec(fileno(f), false); |
48b90859 LP |
1221 | if (r < 0) |
1222 | return log_error_errno(r, "Failed to disable O_CLOEXEC for serialization: %m"); | |
a16e1123 | 1223 | |
6b78f9b4 | 1224 | r = fdset_cloexec(fds, false); |
48b90859 LP |
1225 | if (r < 0) |
1226 | return log_error_errno(r, "Failed to disable O_CLOEXEC for serialization fds: %m"); | |
a16e1123 | 1227 | |
2cc856ac LP |
1228 | *ret_f = TAKE_PTR(f); |
1229 | *ret_fds = TAKE_PTR(fds); | |
a16e1123 | 1230 | |
48b90859 | 1231 | return 0; |
a16e1123 LP |
1232 | } |
1233 | ||
a8b627aa LP |
1234 | static void bump_file_max_and_nr_open(void) { |
1235 | ||
ff3a7019 ZJS |
1236 | /* Let's bump fs.file-max and fs.nr_open to their respective maximums. On current kernels large |
1237 | * numbers of file descriptors are no longer a performance problem and their memory is properly | |
1238 | * tracked by memcg, thus counting them and limiting them in another two layers of limits is | |
1239 | * unnecessary and just complicates things. This function hence turns off 2 of the 4 levels of limits | |
1240 | * on file descriptors, and makes RLIMIT_NOLIMIT (soft + hard) the only ones that really matter. */ | |
a8b627aa LP |
1241 | |
1242 | #if BUMP_PROC_SYS_FS_FILE_MAX || BUMP_PROC_SYS_FS_NR_OPEN | |
a8b627aa LP |
1243 | int r; |
1244 | #endif | |
1245 | ||
1246 | #if BUMP_PROC_SYS_FS_FILE_MAX | |
409607c1 ZJS |
1247 | /* The maximum the kernel allows for this since 5.2 is LONG_MAX, use that. (Previously things were |
1248 | * different, but the operation would fail silently.) */ | |
a5fac1df | 1249 | r = sysctl_write("fs/file-max", LONG_MAX_STR); |
a8b627aa | 1250 | if (r < 0) |
b47e0fac ZJS |
1251 | log_full_errno(IN_SET(r, -EROFS, -EPERM, -EACCES) ? LOG_DEBUG : LOG_WARNING, |
1252 | r, "Failed to bump fs.file-max, ignoring: %m"); | |
a8b627aa LP |
1253 | #endif |
1254 | ||
a8b627aa LP |
1255 | #if BUMP_PROC_SYS_FS_NR_OPEN |
1256 | int v = INT_MAX; | |
1257 | ||
ff3a7019 ZJS |
1258 | /* Argh! The kernel enforces maximum and minimum values on the fs.nr_open, but we don't really know |
1259 | * what they are. The expression by which the maximum is determined is dependent on the architecture, | |
1260 | * and is something we don't really want to copy to userspace, as it is dependent on implementation | |
1261 | * details of the kernel. Since the kernel doesn't expose the maximum value to us, we can only try | |
1262 | * and hope. Hence, let's start with INT_MAX, and then keep halving the value until we find one that | |
1263 | * works. Ugly? Yes, absolutely, but kernel APIs are kernel APIs, so what do can we do... 🤯 */ | |
a8b627aa LP |
1264 | |
1265 | for (;;) { | |
1266 | int k; | |
1267 | ||
1268 | v &= ~(__SIZEOF_POINTER__ - 1); /* Round down to next multiple of the pointer size */ | |
1269 | if (v < 1024) { | |
1270 | log_warning("Can't bump fs.nr_open, value too small."); | |
1271 | break; | |
1272 | } | |
1273 | ||
1274 | k = read_nr_open(); | |
1275 | if (k < 0) { | |
1276 | log_error_errno(k, "Failed to read fs.nr_open: %m"); | |
1277 | break; | |
1278 | } | |
1279 | if (k >= v) { /* Already larger */ | |
1280 | log_debug("Skipping bump, value is already larger."); | |
1281 | break; | |
1282 | } | |
1283 | ||
b47e0fac | 1284 | r = sysctl_writef("fs/nr_open", "%i", v); |
a8b627aa LP |
1285 | if (r == -EINVAL) { |
1286 | log_debug("Couldn't write fs.nr_open as %i, halving it.", v); | |
1287 | v /= 2; | |
1288 | continue; | |
1289 | } | |
1290 | if (r < 0) { | |
1291 | log_full_errno(IN_SET(r, -EROFS, -EPERM, -EACCES) ? LOG_DEBUG : LOG_WARNING, r, "Failed to bump fs.nr_open, ignoring: %m"); | |
1292 | break; | |
1293 | } | |
1294 | ||
1295 | log_debug("Successfully bumped fs.nr_open to %i", v); | |
1296 | break; | |
1297 | } | |
1298 | #endif | |
1299 | } | |
1300 | ||
eadb4f19 | 1301 | static int bump_rlimit_nofile(const struct rlimit *saved_rlimit) { |
cda7faa9 | 1302 | struct rlimit new_rlimit; |
9264cc39 | 1303 | int r, nr; |
4096d6f5 | 1304 | |
52d62075 LP |
1305 | /* Get the underlying absolute limit the kernel enforces */ |
1306 | nr = read_nr_open(); | |
1307 | ||
cda7faa9 LP |
1308 | /* Calculate the new limits to use for us. Never lower from what we inherited. */ |
1309 | new_rlimit = (struct rlimit) { | |
1310 | .rlim_cur = MAX((rlim_t) nr, saved_rlimit->rlim_cur), | |
1311 | .rlim_max = MAX((rlim_t) nr, saved_rlimit->rlim_max), | |
1312 | }; | |
1313 | ||
1314 | /* Shortcut if nothing changes. */ | |
1315 | if (saved_rlimit->rlim_max >= new_rlimit.rlim_max && | |
1316 | saved_rlimit->rlim_cur >= new_rlimit.rlim_cur) { | |
1317 | log_debug("RLIMIT_NOFILE is already as high or higher than we need it, not bumping."); | |
1318 | return 0; | |
1319 | } | |
1320 | ||
52d62075 LP |
1321 | /* Bump up the resource limit for ourselves substantially, all the way to the maximum the kernel allows, for |
1322 | * both hard and soft. */ | |
cda7faa9 | 1323 | r = setrlimit_closest(RLIMIT_NOFILE, &new_rlimit); |
23bbb0de | 1324 | if (r < 0) |
3ce40911 | 1325 | return log_warning_errno(r, "Setting RLIMIT_NOFILE failed, ignoring: %m"); |
4096d6f5 LP |
1326 | |
1327 | return 0; | |
1328 | } | |
1329 | ||
eadb4f19 | 1330 | static int bump_rlimit_memlock(const struct rlimit *saved_rlimit) { |
cda7faa9 | 1331 | struct rlimit new_rlimit; |
04d1ee0f | 1332 | uint64_t mm; |
fb3ae275 LP |
1333 | int r; |
1334 | ||
ff3a7019 ZJS |
1335 | /* BPF_MAP_TYPE_LPM_TRIE bpf maps are charged against RLIMIT_MEMLOCK, even if we have CAP_IPC_LOCK |
1336 | * which should normally disable such checks. We need them to implement IPAddressAllow= and | |
1337 | * IPAddressDeny=, hence let's bump the value high enough for our user. */ | |
fb3ae275 | 1338 | |
cda7faa9 LP |
1339 | /* Using MAX() on resource limits only is safe if RLIM_INFINITY is > 0. POSIX declares that rlim_t |
1340 | * must be unsigned, hence this is a given, but let's make this clear here. */ | |
1341 | assert_cc(RLIM_INFINITY > 0); | |
1342 | ||
ff3a7019 ZJS |
1343 | mm = physical_memory_scale(1, 8); /* Let's scale how much we allow to be locked by the amount of |
1344 | * physical RAM. We allow an eighth to be locked by us, just to | |
1345 | * pick a value. */ | |
04d1ee0f | 1346 | |
cda7faa9 | 1347 | new_rlimit = (struct rlimit) { |
04d1ee0f LP |
1348 | .rlim_cur = MAX3(HIGH_RLIMIT_MEMLOCK, saved_rlimit->rlim_cur, mm), |
1349 | .rlim_max = MAX3(HIGH_RLIMIT_MEMLOCK, saved_rlimit->rlim_max, mm), | |
cda7faa9 LP |
1350 | }; |
1351 | ||
1352 | if (saved_rlimit->rlim_max >= new_rlimit.rlim_cur && | |
1353 | saved_rlimit->rlim_cur >= new_rlimit.rlim_max) { | |
1354 | log_debug("RLIMIT_MEMLOCK is already as high or higher than we need it, not bumping."); | |
1355 | return 0; | |
1356 | } | |
1357 | ||
1358 | r = setrlimit_closest(RLIMIT_MEMLOCK, &new_rlimit); | |
fb3ae275 LP |
1359 | if (r < 0) |
1360 | return log_warning_errno(r, "Setting RLIMIT_MEMLOCK failed, ignoring: %m"); | |
1361 | ||
1362 | return 0; | |
1363 | } | |
1364 | ||
80758717 | 1365 | static void test_usr(void) { |
80758717 | 1366 | |
796ac4c1 | 1367 | /* Check that /usr is either on the same file system as / or mounted already. */ |
80758717 | 1368 | |
db55bbf2 | 1369 | if (dir_is_empty("/usr", /* ignore_hidden_or_backup= */ false) <= 0) |
871c44a7 LP |
1370 | return; |
1371 | ||
8b173b5e | 1372 | log_warning("/usr appears to be on its own filesystem and is not already mounted. This is not a supported setup. " |
871c44a7 | 1373 | "Some things will probably break (sometimes even silently) in mysterious ways. " |
a25d9395 | 1374 | "Consult https://www.freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information."); |
871c44a7 LP |
1375 | } |
1376 | ||
d3b1c508 | 1377 | static int enforce_syscall_archs(Set *archs) { |
349cc4a5 | 1378 | #if HAVE_SECCOMP |
d3b1c508 LP |
1379 | int r; |
1380 | ||
83f12b27 FS |
1381 | if (!is_seccomp_available()) |
1382 | return 0; | |
1383 | ||
469830d1 | 1384 | r = seccomp_restrict_archs(arg_syscall_archs); |
d3b1c508 | 1385 | if (r < 0) |
ef6bf967 | 1386 | return log_error_errno(r, "Failed to enforce system call architecture restriction: %m"); |
d3b1c508 | 1387 | #endif |
469830d1 | 1388 | return 0; |
d3b1c508 LP |
1389 | } |
1390 | ||
4bd03515 ZJS |
1391 | static int os_release_status(void) { |
1392 | _cleanup_free_ char *pretty_name = NULL, *name = NULL, *version = NULL, | |
1393 | *ansi_color = NULL, *support_end = NULL; | |
b6e2f329 LP |
1394 | int r; |
1395 | ||
d58ad743 LP |
1396 | r = parse_os_release(NULL, |
1397 | "PRETTY_NAME", &pretty_name, | |
4bd03515 ZJS |
1398 | "NAME", &name, |
1399 | "VERSION", &version, | |
1400 | "ANSI_COLOR", &ansi_color, | |
1401 | "SUPPORT_END", &support_end); | |
d58ad743 | 1402 | if (r < 0) |
4bd03515 ZJS |
1403 | return log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r, |
1404 | "Failed to read os-release file, ignoring: %m"); | |
b6e2f329 | 1405 | |
02b7005e | 1406 | const char *label = os_release_pretty_name(pretty_name, name); |
4bd03515 ZJS |
1407 | |
1408 | if (show_status_on(arg_show_status)) { | |
1409 | if (log_get_show_color()) | |
1410 | status_printf(NULL, 0, | |
1411 | "\nWelcome to \x1B[%sm%s\x1B[0m!\n", | |
1412 | empty_to_null(ansi_color) ?: "1", | |
1413 | label); | |
1414 | else | |
1415 | status_printf(NULL, 0, | |
1416 | "\nWelcome to %s!\n", | |
1417 | label); | |
1418 | } | |
1419 | ||
6bfe9b3b | 1420 | if (support_end && os_release_support_ended(support_end, /* quiet */ false, NULL) > 0) |
4bd03515 ZJS |
1421 | /* pretty_name may include the version already, so we'll print the version only if we |
1422 | * have it and we're not using pretty_name. */ | |
1423 | status_printf(ANSI_HIGHLIGHT_RED " !! " ANSI_NORMAL, 0, | |
1424 | "This OS version (%s%s%s) is past its end-of-support date (%s)", | |
1425 | label, | |
1426 | (pretty_name || !version) ? "" : " version ", | |
1427 | (pretty_name || !version) ? "" : version, | |
1428 | support_end); | |
1429 | ||
1430 | return 0; | |
b6e2f329 LP |
1431 | } |
1432 | ||
3f37a825 LB |
1433 | static int setup_os_release(RuntimeScope scope) { |
1434 | _cleanup_free_ char *os_release_dst = NULL; | |
1435 | const char *os_release_src = "/etc/os-release"; | |
1436 | int r; | |
1437 | ||
1438 | if (access("/etc/os-release", F_OK) < 0) { | |
1439 | if (errno != ENOENT) | |
1440 | log_debug_errno(errno, "Failed to check if /etc/os-release exists, ignoring: %m"); | |
1441 | ||
1442 | os_release_src = "/usr/lib/os-release"; | |
1443 | } | |
1444 | ||
1445 | if (scope == RUNTIME_SCOPE_SYSTEM) { | |
663e2756 | 1446 | os_release_dst = strdup("/run/systemd/propagate/.os-release-stage/os-release"); |
3f37a825 LB |
1447 | if (!os_release_dst) |
1448 | return log_oom_debug(); | |
1449 | } else { | |
663e2756 | 1450 | if (asprintf(&os_release_dst, "/run/user/" UID_FMT "/systemd/propagate/.os-release-stage/os-release", geteuid()) < 0) |
3f37a825 LB |
1451 | return log_oom_debug(); |
1452 | } | |
1453 | ||
1454 | r = mkdir_parents_label(os_release_dst, 0755); | |
bf85c239 | 1455 | if (r < 0) |
3f37a825 LB |
1456 | return log_debug_errno(r, "Failed to create parent directory of %s, ignoring: %m", os_release_dst); |
1457 | ||
663e2756 | 1458 | r = copy_file_atomic(os_release_src, os_release_dst, 0644, COPY_MAC_CREATE|COPY_REPLACE); |
3f37a825 LB |
1459 | if (r < 0) |
1460 | return log_debug_errno(r, "Failed to create %s, ignoring: %m", os_release_dst); | |
1461 | ||
1462 | return 0; | |
1463 | } | |
1464 | ||
fdd25311 LP |
1465 | static int write_container_id(void) { |
1466 | const char *c; | |
7756528e | 1467 | int r = 0; /* avoid false maybe-uninitialized warning */ |
fdd25311 LP |
1468 | |
1469 | c = getenv("container"); | |
1470 | if (isempty(c)) | |
1471 | return 0; | |
1472 | ||
2053593f | 1473 | WITH_UMASK(0022) |
8612da97 | 1474 | r = write_string_file("/run/systemd/container", c, WRITE_STRING_FILE_CREATE); |
19854865 | 1475 | if (r < 0) |
f1f849b0 | 1476 | return log_warning_errno(r, "Failed to write /run/systemd/container, ignoring: %m"); |
19854865 LP |
1477 | |
1478 | return 1; | |
1479 | } | |
1480 | ||
1481 | static int bump_unix_max_dgram_qlen(void) { | |
1482 | _cleanup_free_ char *qlen = NULL; | |
1483 | unsigned long v; | |
1484 | int r; | |
1485 | ||
ff3a7019 ZJS |
1486 | /* Let's bump the net.unix.max_dgram_qlen sysctl. The kernel default of 16 is simply too low. We set |
1487 | * the value really really early during boot, so that it is actually applied to all our sockets, | |
1488 | * including the $NOTIFY_SOCKET one. */ | |
19854865 LP |
1489 | |
1490 | r = read_one_line_file("/proc/sys/net/unix/max_dgram_qlen", &qlen); | |
1491 | if (r < 0) | |
ff3a7019 ZJS |
1492 | return log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r, |
1493 | "Failed to read AF_UNIX datagram queue length, ignoring: %m"); | |
19854865 LP |
1494 | |
1495 | r = safe_atolu(qlen, &v); | |
1496 | if (r < 0) | |
3130fca5 | 1497 | return log_warning_errno(r, "Failed to parse AF_UNIX datagram queue length '%s', ignoring: %m", qlen); |
19854865 LP |
1498 | |
1499 | if (v >= DEFAULT_UNIX_MAX_DGRAM_QLEN) | |
1500 | return 0; | |
1501 | ||
27c8ca43 | 1502 | r = sysctl_write("net/unix/max_dgram_qlen", STRINGIFY(DEFAULT_UNIX_MAX_DGRAM_QLEN)); |
19854865 LP |
1503 | if (r < 0) |
1504 | return log_full_errno(IN_SET(r, -EROFS, -EPERM, -EACCES) ? LOG_DEBUG : LOG_WARNING, r, | |
1505 | "Failed to bump AF_UNIX datagram queue length, ignoring: %m"); | |
1506 | ||
1507 | return 1; | |
fdd25311 LP |
1508 | } |
1509 | ||
32391275 FB |
1510 | static int fixup_environment(void) { |
1511 | _cleanup_free_ char *term = NULL; | |
4dc63c4b | 1512 | const char *t; |
32391275 FB |
1513 | int r; |
1514 | ||
43db615b LP |
1515 | /* Only fix up the environment when we are started as PID 1 */ |
1516 | if (getpid_cached() != 1) | |
1517 | return 0; | |
1518 | ||
1519 | /* We expect the environment to be set correctly if run inside a container. */ | |
84af7821 LP |
1520 | if (detect_container() > 0) |
1521 | return 0; | |
1522 | ||
ff3a7019 ZJS |
1523 | /* When started as PID1, the kernel uses /dev/console for our stdios and uses TERM=linux whatever the |
1524 | * backend device used by the console. We try to make a better guess here since some consoles might | |
1525 | * not have support for color mode for example. | |
32391275 | 1526 | * |
43db615b | 1527 | * However if TERM was configured through the kernel command line then leave it alone. */ |
1d84ad94 | 1528 | r = proc_cmdline_get_key("TERM", 0, &term); |
32391275 FB |
1529 | if (r < 0) |
1530 | return r; | |
32391275 | 1531 | |
153d5dfd DDM |
1532 | if (r == 0) { |
1533 | r = proc_cmdline_get_key("systemd.tty.term.console", 0, &term); | |
1534 | if (r < 0) | |
1535 | return r; | |
1536 | } | |
1537 | ||
4dc63c4b LP |
1538 | t = term ?: default_term_for_tty("/dev/console"); |
1539 | ||
1540 | if (setenv("TERM", t, 1) < 0) | |
32391275 FB |
1541 | return -errno; |
1542 | ||
9d48671c | 1543 | /* The kernels sets HOME=/ for init. Let's undo this. */ |
1934242b | 1544 | if (path_equal(getenv("HOME"), "/")) |
44ee03d1 | 1545 | assert_se(unsetenv("HOME") == 0); |
9d48671c | 1546 | |
32391275 FB |
1547 | return 0; |
1548 | } | |
1549 | ||
6808a0bc LP |
1550 | static void redirect_telinit(int argc, char *argv[]) { |
1551 | ||
1552 | /* This is compatibility support for SysV, where calling init as a user is identical to telinit. */ | |
1553 | ||
1554 | #if HAVE_SYSV_COMPAT | |
1555 | if (getpid_cached() == 1) | |
1556 | return; | |
1557 | ||
2306d177 | 1558 | if (!invoked_as(argv, "init")) |
6808a0bc LP |
1559 | return; |
1560 | ||
1561 | execv(SYSTEMCTL_BINARY_PATH, argv); | |
1562 | log_error_errno(errno, "Failed to exec " SYSTEMCTL_BINARY_PATH ": %m"); | |
a45d7127 | 1563 | exit(EXIT_FAILURE); |
6808a0bc LP |
1564 | #endif |
1565 | } | |
1566 | ||
b22d392d | 1567 | static int become_shutdown(int objective, int retval) { |
b22d392d VC |
1568 | static const char* const table[_MANAGER_OBJECTIVE_MAX] = { |
1569 | [MANAGER_EXIT] = "exit", | |
1570 | [MANAGER_REBOOT] = "reboot", | |
1571 | [MANAGER_POWEROFF] = "poweroff", | |
1572 | [MANAGER_HALT] = "halt", | |
1573 | [MANAGER_KEXEC] = "kexec", | |
1574 | }; | |
4a36297c | 1575 | |
e8815abf | 1576 | char timeout[STRLEN("--timeout=") + DECIMAL_STR_MAX(usec_t) + STRLEN("us")], |
4688b089 | 1577 | exit_code[STRLEN("--exit-code=") + DECIMAL_STR_MAX(uint8_t)]; |
4a36297c LP |
1578 | |
1579 | _cleanup_strv_free_ char **env_block = NULL; | |
e8815abf | 1580 | _cleanup_free_ char *max_log_levels = NULL; |
f16890f8 | 1581 | usec_t watchdog_timer = 0; |
4a36297c LP |
1582 | int r; |
1583 | ||
b22d392d VC |
1584 | assert(objective >= 0 && objective < _MANAGER_OBJECTIVE_MAX); |
1585 | assert(table[objective]); | |
4a36297c | 1586 | |
c9e120e0 | 1587 | xsprintf(timeout, "--timeout=%" PRI_USEC "us", arg_defaults.timeout_stop_usec); |
4a36297c | 1588 | |
e8815abf | 1589 | const char* command_line[11] = { |
4688b089 ZJS |
1590 | SYSTEMD_SHUTDOWN_BINARY_PATH, |
1591 | table[objective], | |
4688b089 ZJS |
1592 | timeout, |
1593 | /* Note that the last position is a terminator and must contain NULL. */ | |
1594 | }; | |
e8815abf | 1595 | size_t pos = 3; |
4688b089 ZJS |
1596 | |
1597 | assert(command_line[pos-1]); | |
1598 | assert(!command_line[pos]); | |
1599 | ||
e8815abf DDM |
1600 | (void) log_max_levels_to_string(log_get_max_level(), &max_log_levels); |
1601 | ||
1602 | if (max_log_levels) { | |
1603 | command_line[pos++] = "--log-level"; | |
1604 | command_line[pos++] = max_log_levels; | |
1605 | } | |
1606 | ||
4a36297c LP |
1607 | switch (log_get_target()) { |
1608 | ||
1609 | case LOG_TARGET_KMSG: | |
1610 | case LOG_TARGET_JOURNAL_OR_KMSG: | |
1611 | case LOG_TARGET_SYSLOG_OR_KMSG: | |
d2ebd50d | 1612 | command_line[pos++] = "--log-target=kmsg"; |
4a36297c LP |
1613 | break; |
1614 | ||
1615 | case LOG_TARGET_NULL: | |
6b7f150b | 1616 | command_line[pos++] = "--log-target=null"; |
4a36297c LP |
1617 | break; |
1618 | ||
1619 | case LOG_TARGET_CONSOLE: | |
1620 | default: | |
d2ebd50d | 1621 | command_line[pos++] = "--log-target=console"; |
4a36297c LP |
1622 | break; |
1623 | }; | |
1624 | ||
1625 | if (log_get_show_color()) | |
1626 | command_line[pos++] = "--log-color"; | |
1627 | ||
1628 | if (log_get_show_location()) | |
1629 | command_line[pos++] = "--log-location"; | |
1630 | ||
c5673ed0 DS |
1631 | if (log_get_show_time()) |
1632 | command_line[pos++] = "--log-time"; | |
1633 | ||
3f92250f DDM |
1634 | xsprintf(exit_code, "--exit-code=%d", retval); |
1635 | command_line[pos++] = exit_code; | |
4a36297c | 1636 | |
14ecfc1c | 1637 | assert(pos < ELEMENTSOF(command_line)); |
4688b089 ZJS |
1638 | |
1639 | /* The watchdog: */ | |
4a36297c | 1640 | |
b22d392d | 1641 | if (objective == MANAGER_REBOOT) |
65224c1d | 1642 | watchdog_timer = arg_reboot_watchdog; |
b22d392d | 1643 | else if (objective == MANAGER_KEXEC) |
acafd7d8 LB |
1644 | watchdog_timer = arg_kexec_watchdog; |
1645 | ||
f16890f8 | 1646 | /* If we reboot or kexec let's set the shutdown watchdog and tell the |
5717062e CK |
1647 | * shutdown binary to repeatedly ping it. |
1648 | * Disable the pretimeout watchdog, as we do not support it from the shutdown binary. */ | |
1649 | (void) watchdog_setup_pretimeout(0); | |
aff3a9e1 | 1650 | (void) watchdog_setup_pretimeout_governor(NULL); |
f16890f8 FB |
1651 | r = watchdog_setup(watchdog_timer); |
1652 | watchdog_close(r < 0); | |
4a36297c | 1653 | |
4688b089 ZJS |
1654 | /* The environment block: */ |
1655 | ||
1656 | env_block = strv_copy(environ); | |
1657 | ||
f16890f8 FB |
1658 | /* Tell the binary how often to ping, ignore failure */ |
1659 | (void) strv_extendf(&env_block, "WATCHDOG_USEC="USEC_FMT, watchdog_timer); | |
8a2c1fbf | 1660 | |
f16890f8 FB |
1661 | if (arg_watchdog_device) |
1662 | (void) strv_extendf(&env_block, "WATCHDOG_DEVICE=%s", arg_watchdog_device); | |
4a36297c | 1663 | |
3178d23d FB |
1664 | /* Avoid the creation of new processes forked by the kernel; at this |
1665 | * point, we will not listen to the signals anyway */ | |
4a36297c LP |
1666 | if (detect_container() <= 0) |
1667 | (void) cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER); | |
1668 | ||
1669 | execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block); | |
1670 | return -errno; | |
1671 | } | |
1672 | ||
e839bafd LP |
1673 | static void initialize_clock(void) { |
1674 | int r; | |
1675 | ||
3753325b LP |
1676 | /* This is called very early on, before we parse the kernel command line or otherwise figure out why |
1677 | * we are running, but only once. */ | |
1678 | ||
e839bafd LP |
1679 | if (clock_is_localtime(NULL) > 0) { |
1680 | int min; | |
1681 | ||
ff3a7019 | 1682 | /* The very first call of settimeofday() also does a time warp in the kernel. |
e839bafd | 1683 | * |
ff3a7019 ZJS |
1684 | * In the rtc-in-local time mode, we set the kernel's timezone, and rely on external tools to |
1685 | * take care of maintaining the RTC and do all adjustments. This matches the behavior of | |
1686 | * Windows, which leaves the RTC alone if the registry tells that the RTC runs in UTC. | |
e839bafd LP |
1687 | */ |
1688 | r = clock_set_timezone(&min); | |
1689 | if (r < 0) | |
1690 | log_error_errno(r, "Failed to apply local time delta, ignoring: %m"); | |
1691 | else | |
1692 | log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min); | |
1693 | ||
d46b79bb | 1694 | } else if (!in_initrd()) |
e839bafd LP |
1695 | /* |
1696 | * Do a dummy very first call to seal the kernel's time warp magic. | |
1697 | * | |
ff3a7019 ZJS |
1698 | * Do not call this from inside the initrd. The initrd might not carry /etc/adjtime with |
1699 | * LOCAL, but the real system could be set up that way. In such case, we need to delay the | |
1700 | * time-warp or the sealing until we reach the real system. | |
e839bafd | 1701 | * |
ff3a7019 ZJS |
1702 | * Do no set the kernel's timezone. The concept of local time cannot be supported reliably, |
1703 | * the time will jump or be incorrect at every daylight saving time change. All kernel local | |
1704 | * time concepts will be treated as UTC that way. | |
e839bafd LP |
1705 | */ |
1706 | (void) clock_reset_timewarp(); | |
e839bafd | 1707 | |
b10abe4b EI |
1708 | ClockChangeDirection change_dir; |
1709 | r = clock_apply_epoch(&change_dir); | |
1710 | if (r > 0 && change_dir == CLOCK_CHANGE_FORWARD) | |
e839bafd | 1711 | log_info("System time before build time, advancing clock."); |
b10abe4b EI |
1712 | else if (r > 0 && change_dir == CLOCK_CHANGE_BACKWARD) |
1713 | log_info("System time is further ahead than %s after build time, resetting clock to build time.", | |
1714 | FORMAT_TIMESPAN(CLOCK_VALID_RANGE_USEC_MAX, USEC_PER_DAY)); | |
1715 | else if (r < 0 && change_dir == CLOCK_CHANGE_FORWARD) | |
1716 | log_error_errno(r, "Current system time is before build time, but cannot correct: %m"); | |
1717 | else if (r < 0 && change_dir == CLOCK_CHANGE_BACKWARD) | |
1718 | log_error_errno(r, "Current system time is further ahead %s after build time, but cannot correct: %m", | |
1719 | FORMAT_TIMESPAN(CLOCK_VALID_RANGE_USEC_MAX, USEC_PER_DAY)); | |
e839bafd LP |
1720 | } |
1721 | ||
3753325b | 1722 | static void apply_clock_update(void) { |
3753325b LP |
1723 | /* This is called later than initialize_clock(), i.e. after we parsed configuration files/kernel |
1724 | * command line and such. */ | |
1725 | ||
1726 | if (arg_clock_usec == 0) | |
1727 | return; | |
1728 | ||
45250e66 LP |
1729 | if (getpid_cached() != 1) |
1730 | return; | |
1731 | ||
52bb308c | 1732 | if (clock_settime(CLOCK_REALTIME, TIMESPEC_STORE(arg_clock_usec)) < 0) |
3753325b | 1733 | log_error_errno(errno, "Failed to set system clock to time specified on kernel command line: %m"); |
04f5c018 | 1734 | else |
3753325b | 1735 | log_info("Set system clock to %s, as specified on the kernel command line.", |
04f5c018 | 1736 | FORMAT_TIMESTAMP(arg_clock_usec)); |
3753325b LP |
1737 | } |
1738 | ||
d247f232 | 1739 | static void cmdline_take_random_seed(void) { |
d247f232 LP |
1740 | size_t suggested; |
1741 | int r; | |
1742 | ||
1743 | if (arg_random_seed_size == 0) | |
1744 | return; | |
1745 | ||
1746 | if (getpid_cached() != 1) | |
1747 | return; | |
1748 | ||
1749 | assert(arg_random_seed); | |
1750 | suggested = random_pool_size(); | |
1751 | ||
1752 | if (arg_random_seed_size < suggested) | |
1753 | log_warning("Random seed specified on kernel command line has size %zu, but %zu bytes required to fill entropy pool.", | |
1754 | arg_random_seed_size, suggested); | |
1755 | ||
61bd7d1e | 1756 | r = random_write_entropy(-1, arg_random_seed, arg_random_seed_size, true); |
d247f232 LP |
1757 | if (r < 0) { |
1758 | log_warning_errno(r, "Failed to credit entropy specified on kernel command line, ignoring: %m"); | |
1759 | return; | |
1760 | } | |
1761 | ||
1762 | log_notice("Successfully credited entropy passed on kernel command line.\n" | |
ff3a7019 ZJS |
1763 | "Note that the seed provided this way is accessible to unprivileged programs. " |
1764 | "This functionality should not be used outside of testing environments."); | |
d247f232 LP |
1765 | } |
1766 | ||
1e41242e | 1767 | static void initialize_coredump(bool skip_setup) { |
1e41242e LP |
1768 | if (getpid_cached() != 1) |
1769 | return; | |
1770 | ||
ff3a7019 ZJS |
1771 | /* Don't limit the core dump size, so that coredump handlers such as systemd-coredump (which honour |
1772 | * the limit) will process core dumps for system services by default. */ | |
1e41242e LP |
1773 | if (setrlimit(RLIMIT_CORE, &RLIMIT_MAKE_CONST(RLIM_INFINITY)) < 0) |
1774 | log_warning_errno(errno, "Failed to set RLIMIT_CORE: %m"); | |
1775 | ||
ff3a7019 ZJS |
1776 | /* But at the same time, turn off the core_pattern logic by default, so that no coredumps are stored |
1777 | * until the systemd-coredump tool is enabled via sysctl. However it can be changed via the kernel | |
32e27670 | 1778 | * command line later so core dumps can still be generated during early startup and in initrd. */ |
1e41242e | 1779 | if (!skip_setup) |
e557b1a6 | 1780 | disable_coredumps(); |
1e41242e LP |
1781 | } |
1782 | ||
c6885f5f FB |
1783 | static void initialize_core_pattern(bool skip_setup) { |
1784 | int r; | |
1785 | ||
1786 | if (skip_setup || !arg_early_core_pattern) | |
1787 | return; | |
1788 | ||
1789 | if (getpid_cached() != 1) | |
1790 | return; | |
1791 | ||
57512c89 | 1792 | r = write_string_file("/proc/sys/kernel/core_pattern", arg_early_core_pattern, WRITE_STRING_FILE_DISABLE_BUFFER); |
c6885f5f | 1793 | if (r < 0) |
ff3a7019 ZJS |
1794 | log_warning_errno(r, "Failed to write '%s' to /proc/sys/kernel/core_pattern, ignoring: %m", |
1795 | arg_early_core_pattern); | |
c6885f5f FB |
1796 | } |
1797 | ||
ffc1ec73 LP |
1798 | static void apply_protect_system(bool skip_setup) { |
1799 | int r; | |
1800 | ||
1801 | if (skip_setup || getpid_cached() != 1 || arg_protect_system == 0) | |
1802 | return; | |
1803 | ||
1804 | if (arg_protect_system < 0 && !in_initrd()) { | |
1805 | log_debug("ProtectSystem=auto selected, but not running in an initrd, skipping."); | |
1806 | return; | |
1807 | } | |
1808 | ||
1809 | r = make_mount_point("/usr"); | |
1810 | if (r < 0) { | |
1811 | log_warning_errno(r, "Failed to make /usr/ a mount point, ignoring: %m"); | |
1812 | return; | |
1813 | } | |
1814 | ||
1815 | if (mount_nofollow_verbose( | |
1816 | LOG_WARNING, | |
1817 | /* what= */ NULL, | |
1818 | "/usr", | |
1819 | /* fstype= */ NULL, | |
1820 | MS_BIND|MS_REMOUNT|MS_RDONLY, | |
1821 | /* options= */ NULL) < 0) | |
1822 | return; | |
1823 | ||
1824 | log_info("Successfully made /usr/ read-only."); | |
1825 | } | |
1826 | ||
61fbbac1 ZJS |
1827 | static void update_cpu_affinity(bool skip_setup) { |
1828 | _cleanup_free_ char *mask = NULL; | |
1829 | ||
1830 | if (skip_setup || !arg_cpu_affinity.set) | |
1831 | return; | |
1832 | ||
1833 | assert(arg_cpu_affinity.allocated > 0); | |
1834 | ||
667030bf ZJS |
1835 | mask = cpu_set_to_range_string(&arg_cpu_affinity); |
1836 | log_debug("Setting CPU affinity to {%s}.", strnull(mask)); | |
61fbbac1 ZJS |
1837 | |
1838 | if (sched_setaffinity(0, arg_cpu_affinity.allocated, arg_cpu_affinity.set) < 0) | |
6b1fa539 | 1839 | log_warning_errno(errno, "Failed to set CPU affinity, ignoring: %m"); |
61fbbac1 ZJS |
1840 | } |
1841 | ||
b070c7c0 MS |
1842 | static void update_numa_policy(bool skip_setup) { |
1843 | int r; | |
1844 | _cleanup_free_ char *nodes = NULL; | |
1845 | const char * policy = NULL; | |
1846 | ||
1847 | if (skip_setup || !mpol_is_valid(numa_policy_get_type(&arg_numa_policy))) | |
1848 | return; | |
1849 | ||
1850 | if (DEBUG_LOGGING) { | |
1851 | policy = mpol_to_string(numa_policy_get_type(&arg_numa_policy)); | |
1852 | nodes = cpu_set_to_range_string(&arg_numa_policy.nodes); | |
667030bf | 1853 | log_debug("Setting NUMA policy to %s, with nodes {%s}.", strnull(policy), strnull(nodes)); |
b070c7c0 MS |
1854 | } |
1855 | ||
1856 | r = apply_numa_policy(&arg_numa_policy); | |
1857 | if (r == -EOPNOTSUPP) | |
1858 | log_debug_errno(r, "NUMA support not available, ignoring."); | |
1859 | else if (r < 0) | |
6b1fa539 | 1860 | log_warning_errno(r, "Failed to set NUMA memory policy, ignoring: %m"); |
b070c7c0 MS |
1861 | } |
1862 | ||
19fd72df LP |
1863 | static void filter_args( |
1864 | const char* dst[], | |
1865 | size_t *dst_index, | |
1866 | char **src, | |
1867 | int argc) { | |
1868 | ||
846f1da4 | 1869 | assert(dst); |
19fd72df | 1870 | assert(dst_index); |
846f1da4 ZJS |
1871 | |
1872 | /* Copy some filtered arguments into the dst array from src. */ | |
1873 | for (int i = 1; i < argc; i++) { | |
1874 | if (STR_IN_SET(src[i], | |
1875 | "--switched-root", | |
1876 | "--system", | |
1877 | "--user")) | |
1878 | continue; | |
1879 | ||
1880 | if (startswith(src[i], "--deserialize=")) | |
1881 | continue; | |
1882 | if (streq(src[i], "--deserialize")) { | |
1883 | i++; /* Skip the argument too */ | |
1884 | continue; | |
1885 | } | |
1886 | ||
1887 | /* Skip target unit designators. We already acted upon this information and have queued | |
1888 | * appropriate jobs. We don't want to redo all this after reexecution. */ | |
1889 | if (startswith(src[i], "--unit=")) | |
1890 | continue; | |
1891 | if (streq(src[i], "--unit")) { | |
1892 | i++; /* Skip the argument too */ | |
1893 | continue; | |
1894 | } | |
1895 | ||
846f1da4 | 1896 | /* Seems we have a good old option. Let's pass it over to the new instance. */ |
19fd72df | 1897 | dst[(*dst_index)++] = src[i]; |
846f1da4 ZJS |
1898 | } |
1899 | } | |
1900 | ||
05be3e8b LB |
1901 | static void finish_remaining_processes(ManagerObjective objective) { |
1902 | assert(objective >= 0 && objective < _MANAGER_OBJECTIVE_MAX); | |
1903 | ||
1904 | /* Kill all remaining processes from the initrd, but don't wait for them, so that we can handle the | |
1905 | * SIGCHLD for them after deserializing. */ | |
1906 | if (IN_SET(objective, MANAGER_SWITCH_ROOT, MANAGER_SOFT_REBOOT)) | |
c9e120e0 | 1907 | broadcast_signal(SIGTERM, /* wait_for_exit= */ false, /* send_sighup= */ true, arg_defaults.timeout_stop_usec); |
05be3e8b | 1908 | |
559214cb LB |
1909 | /* On soft reboot really make sure nothing is left. Note that this will skip cgroups |
1910 | * of units that were configured with SurviveFinalKillSignal=yes. */ | |
05be3e8b | 1911 | if (objective == MANAGER_SOFT_REBOOT) |
c9e120e0 | 1912 | broadcast_signal(SIGKILL, /* wait_for_exit= */ false, /* send_sighup= */ false, arg_defaults.timeout_stop_usec); |
05be3e8b LB |
1913 | } |
1914 | ||
1e3eee8c ZJS |
1915 | static int do_reexecute( |
1916 | ManagerObjective objective, | |
3c7878f9 | 1917 | int argc, |
846f1da4 | 1918 | char* argv[], |
3c7878f9 LP |
1919 | const struct rlimit *saved_rlimit_nofile, |
1920 | const struct rlimit *saved_rlimit_memlock, | |
1921 | FDSet *fds, | |
1922 | const char *switch_root_dir, | |
1923 | const char *switch_root_init, | |
1924 | const char **ret_error_message) { | |
1925 | ||
19fd72df | 1926 | size_t i, args_size; |
3c7878f9 LP |
1927 | const char **args; |
1928 | int r; | |
1929 | ||
13ffc607 | 1930 | assert(IN_SET(objective, MANAGER_REEXECUTE, MANAGER_SWITCH_ROOT, MANAGER_SOFT_REBOOT)); |
19fd72df | 1931 | assert(argc >= 0); |
3c7878f9 LP |
1932 | assert(saved_rlimit_nofile); |
1933 | assert(saved_rlimit_memlock); | |
1934 | assert(ret_error_message); | |
1935 | ||
aaa27e2e DDM |
1936 | if (switch_root_init) { |
1937 | r = chase(switch_root_init, switch_root_dir, CHASE_PREFIX_ROOT, NULL, NULL); | |
1938 | if (r < 0) | |
1939 | log_warning_errno(r, "Failed to chase configured init %s/%s: %m", | |
1940 | strempty(switch_root_dir), switch_root_init); | |
1941 | } else { | |
1942 | r = chase(SYSTEMD_BINARY_PATH, switch_root_dir, CHASE_PREFIX_ROOT, NULL, NULL); | |
1943 | if (r < 0) | |
1944 | log_debug_errno(r, "Failed to chase our own binary %s/%s: %m", | |
1945 | strempty(switch_root_dir), SYSTEMD_BINARY_PATH); | |
1946 | } | |
1947 | ||
1948 | if (r < 0) { | |
1949 | r = chase("/sbin/init", switch_root_dir, CHASE_PREFIX_ROOT, NULL, NULL); | |
1950 | if (r < 0) | |
1951 | return log_error_errno(r, "Failed to chase %s/sbin/init", strempty(switch_root_dir)); | |
1952 | } | |
1953 | ||
ff3a7019 ZJS |
1954 | /* Close and disarm the watchdog, so that the new instance can reinitialize it, but doesn't get |
1955 | * rebooted while we do that */ | |
3c7878f9 LP |
1956 | watchdog_close(true); |
1957 | ||
ddfa8b0b LP |
1958 | /* Reset RLIMIT_NOFILE + RLIMIT_MEMLOCK back to the kernel defaults, so that the new systemd can pass |
1959 | * the kernel default to its child processes */ | |
1960 | if (saved_rlimit_nofile->rlim_cur != 0) | |
3c7878f9 | 1961 | (void) setrlimit(RLIMIT_NOFILE, saved_rlimit_nofile); |
ddfa8b0b | 1962 | if (saved_rlimit_memlock->rlim_cur != RLIM_INFINITY) |
3c7878f9 LP |
1963 | (void) setrlimit(RLIMIT_MEMLOCK, saved_rlimit_memlock); |
1964 | ||
05be3e8b | 1965 | finish_remaining_processes(objective); |
13ffc607 LP |
1966 | |
1967 | if (!switch_root_dir && objective == MANAGER_SOFT_REBOOT) { | |
1968 | /* If no switch root dir is specified, then check if /run/nextroot/ qualifies and use that */ | |
1969 | r = path_is_os_tree("/run/nextroot"); | |
1970 | if (r < 0 && r != -ENOENT) | |
1971 | log_debug_errno(r, "Failed to determine if /run/nextroot/ is a valid OS tree, ignoring: %m"); | |
1972 | else if (r > 0) | |
1973 | switch_root_dir = "/run/nextroot"; | |
1974 | } | |
3c7878f9 | 1975 | |
13ffc607 | 1976 | if (switch_root_dir) { |
13ffc607 LP |
1977 | r = switch_root(/* new_root= */ switch_root_dir, |
1978 | /* old_root_after= */ NULL, | |
b12d41a8 | 1979 | /* flags= */ (objective == MANAGER_SWITCH_ROOT ? SWITCH_ROOT_DESTROY_OLD_ROOT : 0) | |
c2d62118 | 1980 | (objective == MANAGER_SOFT_REBOOT ? 0 : SWITCH_ROOT_RECURSIVE_RUN)); |
3c7878f9 LP |
1981 | if (r < 0) |
1982 | log_error_errno(r, "Failed to switch root, trying to continue: %m"); | |
1983 | } | |
1984 | ||
d2ebd50d | 1985 | args_size = argc + 5; |
3c7878f9 LP |
1986 | args = newa(const char*, args_size); |
1987 | ||
1988 | if (!switch_root_init) { | |
d2ebd50d | 1989 | char sfd[STRLEN("--deserialize=") + DECIMAL_STR_MAX(int)]; |
3c7878f9 | 1990 | |
ff3a7019 ZJS |
1991 | /* First try to spawn ourselves with the right path, and with full serialization. We do this |
1992 | * only if the user didn't specify an explicit init to spawn. */ | |
3c7878f9 LP |
1993 | |
1994 | assert(arg_serialization); | |
1995 | assert(fds); | |
1996 | ||
d2ebd50d | 1997 | xsprintf(sfd, "--deserialize=%i", fileno(arg_serialization)); |
3c7878f9 | 1998 | |
846f1da4 | 1999 | i = 1; /* Leave args[0] empty for now. */ |
846f1da4 | 2000 | |
06afda6b FS |
2001 | /* Put our stuff first to make sure it always gets parsed in case |
2002 | * we get weird stuff from the kernel cmdline (like --) */ | |
13ffc607 | 2003 | if (IN_SET(objective, MANAGER_SWITCH_ROOT, MANAGER_SOFT_REBOOT)) |
3c7878f9 | 2004 | args[i++] = "--switched-root"; |
40d73340 | 2005 | args[i++] = runtime_scope_cmdline_option_to_string(arg_runtime_scope); |
3c7878f9 | 2006 | args[i++] = sfd; |
06afda6b FS |
2007 | |
2008 | filter_args(args, &i, argv, argc); | |
2009 | ||
3c7878f9 LP |
2010 | args[i++] = NULL; |
2011 | ||
2012 | assert(i <= args_size); | |
2013 | ||
2014 | /* | |
50b35193 ZJS |
2015 | * We want valgrind to print its memory usage summary before reexecution. Valgrind won't do |
2016 | * this is on its own on exec(), but it will do it on exit(). Hence, to ensure we get a | |
ff3a7019 ZJS |
2017 | * summary here, fork() off a child, let it exit() cleanly, so that it prints the summary, |
2018 | * and wait() for it in the parent, before proceeding into the exec(). | |
3c7878f9 LP |
2019 | */ |
2020 | valgrind_summary_hack(); | |
2021 | ||
846f1da4 | 2022 | args[0] = SYSTEMD_BINARY_PATH; |
3c7878f9 | 2023 | (void) execv(args[0], (char* const*) args); |
1e3eee8c ZJS |
2024 | |
2025 | if (objective == MANAGER_REEXECUTE) { | |
2026 | *ret_error_message = "Failed to execute our own binary"; | |
2027 | return log_error_errno(errno, "Failed to execute our own binary %s: %m", args[0]); | |
2028 | } | |
2029 | ||
846f1da4 | 2030 | log_debug_errno(errno, "Failed to execute our own binary %s, trying fallback: %m", args[0]); |
3c7878f9 LP |
2031 | } |
2032 | ||
ff3a7019 ZJS |
2033 | /* Try the fallback, if there is any, without any serialization. We pass the original argv[] and |
2034 | * envp[]. (Well, modulo the ordering changes due to getopt() in argv[], and some cleanups in envp[], | |
2035 | * but let's hope that doesn't matter.) */ | |
3c7878f9 LP |
2036 | |
2037 | arg_serialization = safe_fclose(arg_serialization); | |
2038 | fds = fdset_free(fds); | |
2039 | ||
2040 | /* Reopen the console */ | |
2041 | (void) make_console_stdio(); | |
2042 | ||
846f1da4 ZJS |
2043 | i = 1; /* Leave args[0] empty for now. */ |
2044 | for (int j = 1; j <= argc; j++) | |
3c7878f9 | 2045 | args[i++] = argv[j]; |
3c7878f9 LP |
2046 | assert(i <= args_size); |
2047 | ||
55c041b4 | 2048 | /* Re-enable any blocked signals, especially important if we switch from initrd to init=... */ |
3c7878f9 LP |
2049 | (void) reset_all_signal_handlers(); |
2050 | (void) reset_signal_mask(); | |
595225af | 2051 | (void) rlimit_nofile_safe(); |
3c7878f9 LP |
2052 | |
2053 | if (switch_root_init) { | |
2054 | args[0] = switch_root_init; | |
a5cede8c | 2055 | (void) execve(args[0], (char* const*) args, saved_env); |
846f1da4 | 2056 | log_warning_errno(errno, "Failed to execute configured init %s, trying fallback: %m", args[0]); |
3c7878f9 LP |
2057 | } |
2058 | ||
2059 | args[0] = "/sbin/init"; | |
2060 | (void) execv(args[0], (char* const*) args); | |
2061 | r = -errno; | |
2062 | ||
2063 | manager_status_printf(NULL, STATUS_TYPE_EMERGENCY, | |
2064 | ANSI_HIGHLIGHT_RED " !! " ANSI_NORMAL, | |
2065 | "Failed to execute /sbin/init"); | |
2066 | ||
1e3eee8c | 2067 | *ret_error_message = "Failed to execute fallback shell"; |
3c7878f9 LP |
2068 | if (r == -ENOENT) { |
2069 | log_warning("No /sbin/init, trying fallback"); | |
2070 | ||
2071 | args[0] = "/bin/sh"; | |
2072 | args[1] = NULL; | |
a5cede8c | 2073 | (void) execve(args[0], (char* const*) args, saved_env); |
1e3eee8c | 2074 | return log_error_errno(errno, "Failed to execute /bin/sh, giving up: %m"); |
3c7878f9 | 2075 | } else |
6b1fa539 | 2076 | return log_error_errno(r, "Failed to execute /sbin/init, giving up: %m"); |
3c7878f9 LP |
2077 | } |
2078 | ||
7eb35049 LP |
2079 | static int invoke_main_loop( |
2080 | Manager *m, | |
a9fd4cd1 FB |
2081 | const struct rlimit *saved_rlimit_nofile, |
2082 | const struct rlimit *saved_rlimit_memlock, | |
7eb35049 | 2083 | int *ret_retval, /* Return parameters relevant for shutting down */ |
7eb35049 LP |
2084 | FDSet **ret_fds, /* Return parameters for reexecuting */ |
2085 | char **ret_switch_root_dir, /* … */ | |
2086 | char **ret_switch_root_init, /* … */ | |
2087 | const char **ret_error_message) { | |
2088 | ||
2089 | int r; | |
2090 | ||
2091 | assert(m); | |
a9fd4cd1 FB |
2092 | assert(saved_rlimit_nofile); |
2093 | assert(saved_rlimit_memlock); | |
7eb35049 | 2094 | assert(ret_retval); |
7eb35049 LP |
2095 | assert(ret_fds); |
2096 | assert(ret_switch_root_dir); | |
2097 | assert(ret_switch_root_init); | |
2098 | assert(ret_error_message); | |
2099 | ||
2100 | for (;;) { | |
5409c6fc ZJS |
2101 | int objective = manager_loop(m); |
2102 | if (objective < 0) { | |
7eb35049 | 2103 | *ret_error_message = "Failed to run main loop"; |
ad5db940 OJ |
2104 | return log_struct_errno(LOG_EMERG, objective, |
2105 | LOG_MESSAGE("Failed to run main loop: %m"), | |
2106 | "MESSAGE_ID=" SD_MESSAGE_CORE_MAINLOOP_FAILED_STR); | |
7eb35049 LP |
2107 | } |
2108 | ||
b3f54861 LB |
2109 | /* Ensure shutdown timestamp is taken even when bypassing the job engine */ |
2110 | if (IN_SET(objective, | |
2111 | MANAGER_SOFT_REBOOT, | |
2112 | MANAGER_REBOOT, | |
2113 | MANAGER_KEXEC, | |
2114 | MANAGER_HALT, | |
2115 | MANAGER_POWEROFF) && | |
2116 | !dual_timestamp_is_set(m->timestamps + MANAGER_TIMESTAMP_SHUTDOWN_START)) | |
2117 | dual_timestamp_now(m->timestamps + MANAGER_TIMESTAMP_SHUTDOWN_START); | |
2118 | ||
5409c6fc | 2119 | switch (objective) { |
7eb35049 | 2120 | |
a6ecbf83 | 2121 | case MANAGER_RELOAD: { |
bda7d78b | 2122 | LogTarget saved_log_target; |
a6ecbf83 FB |
2123 | int saved_log_level; |
2124 | ||
dd0ab174 LP |
2125 | manager_send_reloading(m); |
2126 | ||
af2fb2f2 | 2127 | log_info("Reloading..."); |
7eb35049 | 2128 | |
ff3a7019 ZJS |
2129 | /* First, save any overridden log level/target, then parse the configuration file, |
2130 | * which might change the log level to new settings. */ | |
bda7d78b | 2131 | |
a6ecbf83 | 2132 | saved_log_level = m->log_level_overridden ? log_get_max_level() : -1; |
bda7d78b | 2133 | saved_log_target = m->log_target_overridden ? log_get_target() : _LOG_TARGET_INVALID; |
a6ecbf83 | 2134 | |
a9fd4cd1 | 2135 | (void) parse_configuration(saved_rlimit_nofile, saved_rlimit_memlock); |
7eb35049 LP |
2136 | |
2137 | set_manager_defaults(m); | |
986935cf | 2138 | set_manager_settings(m); |
7eb35049 | 2139 | |
61fbbac1 | 2140 | update_cpu_affinity(false); |
b070c7c0 | 2141 | update_numa_policy(false); |
61fbbac1 | 2142 | |
a6ecbf83 FB |
2143 | if (saved_log_level >= 0) |
2144 | manager_override_log_level(m, saved_log_level); | |
bda7d78b FB |
2145 | if (saved_log_target >= 0) |
2146 | manager_override_log_target(m, saved_log_target); | |
a6ecbf83 | 2147 | |
5409c6fc | 2148 | if (manager_reload(m) < 0) |
ff3a7019 ZJS |
2149 | /* Reloading failed before the point of no return. |
2150 | * Let's continue running as if nothing happened. */ | |
7a35fa24 | 2151 | m->objective = MANAGER_OK; |
af2fb2f2 LB |
2152 | else |
2153 | log_info("Reloading finished in " USEC_FMT " ms.", | |
2154 | usec_sub_unsigned(now(CLOCK_MONOTONIC), m->timestamps[MANAGER_TIMESTAMP_UNITS_LOAD].monotonic) / USEC_PER_MSEC); | |
7eb35049 | 2155 | |
5409c6fc | 2156 | continue; |
a6ecbf83 | 2157 | } |
7eb35049 LP |
2158 | |
2159 | case MANAGER_REEXECUTE: | |
dd0ab174 LP |
2160 | |
2161 | manager_send_reloading(m); /* From the perspective of the manager calling us this is | |
2162 | * pretty much the same as a reload */ | |
2163 | ||
7eb35049 LP |
2164 | r = prepare_reexecute(m, &arg_serialization, ret_fds, false); |
2165 | if (r < 0) { | |
2166 | *ret_error_message = "Failed to prepare for reexecution"; | |
2167 | return r; | |
2168 | } | |
2169 | ||
2170 | log_notice("Reexecuting."); | |
2171 | ||
7eb35049 | 2172 | *ret_retval = EXIT_SUCCESS; |
7eb35049 LP |
2173 | *ret_switch_root_dir = *ret_switch_root_init = NULL; |
2174 | ||
5409c6fc | 2175 | return objective; |
7eb35049 LP |
2176 | |
2177 | case MANAGER_SWITCH_ROOT: | |
dd0ab174 LP |
2178 | |
2179 | manager_send_reloading(m); /* From the perspective of the manager calling us this is | |
2180 | * pretty much the same as a reload */ | |
2181 | ||
d35fe8c0 FB |
2182 | manager_set_switching_root(m, true); |
2183 | ||
7eb35049 LP |
2184 | if (!m->switch_root_init) { |
2185 | r = prepare_reexecute(m, &arg_serialization, ret_fds, true); | |
2186 | if (r < 0) { | |
2187 | *ret_error_message = "Failed to prepare for reexecution"; | |
2188 | return r; | |
2189 | } | |
2190 | } else | |
2191 | *ret_fds = NULL; | |
2192 | ||
2193 | log_notice("Switching root."); | |
2194 | ||
7eb35049 | 2195 | *ret_retval = EXIT_SUCCESS; |
7eb35049 LP |
2196 | |
2197 | /* Steal the switch root parameters */ | |
49052946 YW |
2198 | *ret_switch_root_dir = TAKE_PTR(m->switch_root); |
2199 | *ret_switch_root_init = TAKE_PTR(m->switch_root_init); | |
7eb35049 | 2200 | |
5409c6fc | 2201 | return objective; |
7eb35049 | 2202 | |
13ffc607 LP |
2203 | case MANAGER_SOFT_REBOOT: |
2204 | manager_send_reloading(m); | |
2205 | manager_set_switching_root(m, true); | |
2206 | ||
2207 | r = prepare_reexecute(m, &arg_serialization, ret_fds, /* switching_root= */ true); | |
2208 | if (r < 0) { | |
2209 | *ret_error_message = "Failed to prepare for reexecution"; | |
2210 | return r; | |
2211 | } | |
2212 | ||
2213 | log_notice("Soft-rebooting."); | |
2214 | ||
2215 | *ret_retval = EXIT_SUCCESS; | |
2216 | *ret_switch_root_dir = TAKE_PTR(m->switch_root); | |
2217 | *ret_switch_root_init = NULL; | |
2218 | ||
2219 | return objective; | |
2220 | ||
7eb35049 | 2221 | case MANAGER_EXIT: |
7eb35049 LP |
2222 | if (MANAGER_IS_USER(m)) { |
2223 | log_debug("Exit."); | |
2224 | ||
7eb35049 | 2225 | *ret_retval = m->return_value; |
7eb35049 LP |
2226 | *ret_fds = NULL; |
2227 | *ret_switch_root_dir = *ret_switch_root_init = NULL; | |
2228 | ||
5409c6fc | 2229 | return objective; |
7eb35049 LP |
2230 | } |
2231 | ||
2232 | _fallthrough_; | |
2233 | case MANAGER_REBOOT: | |
2234 | case MANAGER_POWEROFF: | |
2235 | case MANAGER_HALT: | |
2236 | case MANAGER_KEXEC: { | |
7eb35049 LP |
2237 | log_notice("Shutting down."); |
2238 | ||
7eb35049 | 2239 | *ret_retval = m->return_value; |
7eb35049 LP |
2240 | *ret_fds = NULL; |
2241 | *ret_switch_root_dir = *ret_switch_root_init = NULL; | |
2242 | ||
5409c6fc | 2243 | return objective; |
7eb35049 LP |
2244 | } |
2245 | ||
2246 | default: | |
04499a70 | 2247 | assert_not_reached(); |
7eb35049 LP |
2248 | } |
2249 | } | |
2250 | } | |
2251 | ||
31aef7ff | 2252 | static void log_execution_mode(bool *ret_first_boot) { |
7cd43e34 | 2253 | bool first_boot = false; |
4870133b | 2254 | int r; |
7cd43e34 | 2255 | |
31aef7ff LP |
2256 | assert(ret_first_boot); |
2257 | ||
4870133b LP |
2258 | switch (arg_runtime_scope) { |
2259 | ||
2260 | case RUNTIME_SCOPE_SYSTEM: { | |
40efaaed | 2261 | struct utsname uts; |
31aef7ff LP |
2262 | int v; |
2263 | ||
e7b18106 | 2264 | log_info("systemd " GIT_VERSION " running in %ssystem mode (%s)", |
91b79ba8 ZJS |
2265 | arg_action == ACTION_TEST ? "test " : "", |
2266 | systemd_features); | |
31aef7ff LP |
2267 | |
2268 | v = detect_virtualization(); | |
2269 | if (v > 0) | |
2270 | log_info("Detected virtualization %s.", virtualization_to_string(v)); | |
2271 | ||
024469dd DB |
2272 | v = detect_confidential_virtualization(); |
2273 | if (v > 0) | |
2274 | log_info("Detected confidential virtualization %s.", confidential_virtualization_to_string(v)); | |
2275 | ||
31aef7ff LP |
2276 | log_info("Detected architecture %s.", architecture_to_string(uname_architecture())); |
2277 | ||
7cd43e34 | 2278 | if (in_initrd()) |
55c041b4 | 2279 | log_info("Running in initrd."); |
7cd43e34 | 2280 | else { |
583cef3b HS |
2281 | _cleanup_free_ char *id_text = NULL; |
2282 | ||
7cd43e34 | 2283 | /* Let's check whether we are in first boot. First, check if an override was |
7c52d523 | 2284 | * specified on the kernel command line. If yes, we honour that. */ |
7cd43e34 | 2285 | |
78266a54 | 2286 | r = proc_cmdline_get_bool("systemd.condition_first_boot", /* flags = */ 0, &first_boot); |
7cd43e34 | 2287 | if (r < 0) |
78266a54 | 2288 | log_debug_errno(r, "Failed to parse systemd.condition_first_boot= kernel command line argument, ignoring: %m"); |
7cd43e34 ZJS |
2289 | |
2290 | if (r > 0) | |
2291 | log_full(first_boot ? LOG_INFO : LOG_DEBUG, | |
7c52d523 | 2292 | "Kernel command line argument says we are %s first boot.", |
7cd43e34 ZJS |
2293 | first_boot ? "in" : "not in"); |
2294 | else { | |
2295 | /* Second, perform autodetection. We use /etc/machine-id as flag file for | |
2296 | * this: If it is missing or contains the value "uninitialized", this is the | |
2297 | * first boot. In other cases, it is not. This allows container managers and | |
2298 | * installers to provision a couple of files in /etc but still permit the | |
2299 | * first-boot initialization to occur. If the container manager wants to | |
2300 | * provision the machine ID it should pass $container_uuid to PID 1. */ | |
2301 | ||
2302 | r = read_one_line_file("/etc/machine-id", &id_text); | |
2303 | if (r < 0 || streq(id_text, "uninitialized")) { | |
2304 | if (r < 0 && r != -ENOENT) | |
60e4b429 | 2305 | log_warning_errno(r, "Unexpected error while reading /etc/machine-id, assuming first boot: %m"); |
7cd43e34 ZJS |
2306 | |
2307 | first_boot = true; | |
2308 | log_info("Detected first boot."); | |
2309 | } else | |
2310 | log_debug("Detected initialized system, this is not the first boot."); | |
583cef3b | 2311 | } |
31aef7ff | 2312 | } |
40efaaed | 2313 | |
5180394b | 2314 | assert_se(uname(&uts) >= 0); |
40efaaed LP |
2315 | |
2316 | if (strverscmp_improved(uts.release, KERNEL_BASELINE_VERSION) < 0) | |
2317 | log_warning("Warning! Reported kernel version %s is older than systemd's required baseline kernel version %s. " | |
2318 | "Your mileage may vary.", uts.release, KERNEL_BASELINE_VERSION); | |
2319 | else | |
2320 | log_debug("Kernel version %s, our baseline is %s", uts.release, KERNEL_BASELINE_VERSION); | |
4870133b LP |
2321 | |
2322 | break; | |
2323 | } | |
2324 | ||
2325 | case RUNTIME_SCOPE_USER: | |
b9e90f3a | 2326 | if (DEBUG_LOGGING) { |
c2b2df60 | 2327 | _cleanup_free_ char *t = NULL; |
31aef7ff | 2328 | |
b9e90f3a | 2329 | t = uid_to_name(getuid()); |
91b79ba8 ZJS |
2330 | log_debug("systemd " GIT_VERSION " running in %suser mode for user " UID_FMT "/%s. (%s)", |
2331 | arg_action == ACTION_TEST ? " test" : "", | |
2332 | getuid(), strna(t), systemd_features); | |
b9e90f3a | 2333 | } |
4870133b LP |
2334 | |
2335 | break; | |
2336 | ||
2337 | default: | |
2338 | assert_not_reached(); | |
31aef7ff | 2339 | } |
7cd43e34 ZJS |
2340 | |
2341 | *ret_first_boot = first_boot; | |
31aef7ff LP |
2342 | } |
2343 | ||
5afbaa36 LP |
2344 | static int initialize_runtime( |
2345 | bool skip_setup, | |
3023f2fe | 2346 | bool first_boot, |
5afbaa36 LP |
2347 | struct rlimit *saved_rlimit_nofile, |
2348 | struct rlimit *saved_rlimit_memlock, | |
2349 | const char **ret_error_message) { | |
5afbaa36 LP |
2350 | int r; |
2351 | ||
2352 | assert(ret_error_message); | |
2353 | ||
2354 | /* Sets up various runtime parameters. Many of these initializations are conditionalized: | |
2355 | * | |
2356 | * - Some only apply to --system instances | |
2357 | * - Some only apply to --user instances | |
2358 | * - Some only apply when we first start up, but not when we reexecute | |
2359 | */ | |
2360 | ||
2d776038 LP |
2361 | if (arg_action != ACTION_RUN) |
2362 | return 0; | |
2363 | ||
61fbbac1 | 2364 | update_cpu_affinity(skip_setup); |
b070c7c0 | 2365 | update_numa_policy(skip_setup); |
61fbbac1 | 2366 | |
4870133b LP |
2367 | switch (arg_runtime_scope) { |
2368 | ||
2369 | case RUNTIME_SCOPE_SYSTEM: | |
5238e957 | 2370 | /* Make sure we leave a core dump without panicking the kernel. */ |
3c3c6cb9 | 2371 | install_crash_handler(); |
5afbaa36 | 2372 | |
3c3c6cb9 | 2373 | if (!skip_setup) { |
deb0d489 LP |
2374 | /* Pull credentials from various sources into a common credential directory (we do |
2375 | * this here, before setting up the machine ID, so that we can use credential info | |
2376 | * for setting up the machine ID) */ | |
2377 | (void) import_credentials(); | |
2378 | ||
4bd03515 | 2379 | (void) os_release_status(); |
b6fad306 | 2380 | (void) hostname_setup(true); |
3023f2fe | 2381 | /* Force transient machine-id on first boot. */ |
deb0d489 | 2382 | machine_id_setup(/* root= */ NULL, /* force_transient= */ first_boot, arg_machine_id, /* ret_machine_id */ NULL); |
df883de9 | 2383 | (void) loopback_setup(); |
3c3c6cb9 | 2384 | bump_unix_max_dgram_qlen(); |
a8b627aa | 2385 | bump_file_max_and_nr_open(); |
3c3c6cb9 LP |
2386 | test_usr(); |
2387 | write_container_id(); | |
3f37a825 LB |
2388 | |
2389 | /* Copy os-release to the propagate directory, so that we update it for services running | |
2390 | * under RootDirectory=/RootImage= when we do a soft reboot. */ | |
2391 | r = setup_os_release(RUNTIME_SCOPE_SYSTEM); | |
2392 | if (r < 0) | |
2393 | log_warning_errno(r, "Failed to copy os-release for propagation, ignoring: %m"); | |
3c3c6cb9 | 2394 | } |
8a2c1fbf | 2395 | |
82d7a151 YW |
2396 | r = watchdog_set_device(arg_watchdog_device); |
2397 | if (r < 0) | |
2398 | log_warning_errno(r, "Failed to set watchdog device to %s, ignoring: %m", arg_watchdog_device); | |
4870133b LP |
2399 | |
2400 | break; | |
2401 | ||
2402 | case RUNTIME_SCOPE_USER: { | |
32429805 LP |
2403 | _cleanup_free_ char *p = NULL; |
2404 | ||
2405 | /* Create the runtime directory and place the inaccessible device nodes there, if we run in | |
2406 | * user mode. In system mode mount_setup() already did that. */ | |
2407 | ||
2408 | r = xdg_user_runtime_dir(&p, "/systemd"); | |
2409 | if (r < 0) { | |
2410 | *ret_error_message = "$XDG_RUNTIME_DIR is not set"; | |
ad5db940 OJ |
2411 | return log_struct_errno(LOG_EMERG, r, |
2412 | LOG_MESSAGE("Failed to determine $XDG_RUNTIME_DIR path: %m"), | |
2413 | "MESSAGE_ID=" SD_MESSAGE_CORE_NO_XDGDIR_PATH_STR); | |
32429805 LP |
2414 | } |
2415 | ||
e813a74a | 2416 | (void) mkdir_p_label(p, 0755); |
32429805 | 2417 | (void) make_inaccessible_nodes(p, UID_INVALID, GID_INVALID); |
3f37a825 LB |
2418 | r = setup_os_release(RUNTIME_SCOPE_USER); |
2419 | if (r < 0) | |
2420 | log_warning_errno(r, "Failed to copy os-release for propagation, ignoring: %m"); | |
4870133b LP |
2421 | break; |
2422 | } | |
2423 | ||
2424 | default: | |
2425 | assert_not_reached(); | |
3c3c6cb9 | 2426 | } |
5afbaa36 LP |
2427 | |
2428 | if (arg_timer_slack_nsec != NSEC_INFINITY) | |
2429 | if (prctl(PR_SET_TIMERSLACK, arg_timer_slack_nsec) < 0) | |
3a671cd1 | 2430 | log_warning_errno(errno, "Failed to adjust timer slack, ignoring: %m"); |
5afbaa36 | 2431 | |
4870133b | 2432 | if (arg_runtime_scope == RUNTIME_SCOPE_SYSTEM) { |
5afbaa36 | 2433 | |
4870133b LP |
2434 | if (!cap_test_all(arg_capability_bounding_set)) { |
2435 | r = capability_bounding_set_drop_usermode(arg_capability_bounding_set); | |
2436 | if (r < 0) { | |
2437 | *ret_error_message = "Failed to drop capability bounding set of usermode helpers"; | |
ad5db940 OJ |
2438 | return log_struct_errno(LOG_EMERG, r, |
2439 | LOG_MESSAGE("Failed to drop capability bounding set of usermode helpers: %m"), | |
2440 | "MESSAGE_ID=" SD_MESSAGE_CORE_CAPABILITY_BOUNDING_USER_STR); | |
4870133b LP |
2441 | } |
2442 | ||
2443 | r = capability_bounding_set_drop(arg_capability_bounding_set, true); | |
2444 | if (r < 0) { | |
2445 | *ret_error_message = "Failed to drop capability bounding set"; | |
ad5db940 OJ |
2446 | return log_struct_errno(LOG_EMERG, r, |
2447 | LOG_MESSAGE("Failed to drop capability bounding set: %m"), | |
2448 | "MESSAGE_ID=" SD_MESSAGE_CORE_CAPABILITY_BOUNDING_STR); | |
4870133b | 2449 | } |
5afbaa36 | 2450 | } |
5afbaa36 | 2451 | |
4870133b LP |
2452 | if (arg_no_new_privs) { |
2453 | if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) < 0) { | |
2454 | *ret_error_message = "Failed to disable new privileges"; | |
ad5db940 OJ |
2455 | return log_struct_errno(LOG_EMERG, errno, |
2456 | LOG_MESSAGE("Failed to disable new privileges: %m"), | |
2457 | "MESSAGE_ID=" SD_MESSAGE_CORE_DISABLE_PRIVILEGES_STR); | |
4870133b | 2458 | } |
39362f6f JB |
2459 | } |
2460 | } | |
2461 | ||
5afbaa36 LP |
2462 | if (arg_syscall_archs) { |
2463 | r = enforce_syscall_archs(arg_syscall_archs); | |
2464 | if (r < 0) { | |
2465 | *ret_error_message = "Failed to set syscall architectures"; | |
2466 | return r; | |
2467 | } | |
2468 | } | |
2469 | ||
8c3fe1b5 LP |
2470 | r = make_reaper_process(true); |
2471 | if (r < 0) | |
2472 | log_warning_errno(r, "Failed to make us a subreaper, ignoring: %m"); | |
5afbaa36 | 2473 | |
a17c1712 LP |
2474 | /* Bump up RLIMIT_NOFILE for systemd itself */ |
2475 | (void) bump_rlimit_nofile(saved_rlimit_nofile); | |
2476 | (void) bump_rlimit_memlock(saved_rlimit_memlock); | |
5afbaa36 LP |
2477 | |
2478 | return 0; | |
2479 | } | |
2480 | ||
6acca5fc LP |
2481 | static int do_queue_default_job( |
2482 | Manager *m, | |
2483 | const char **ret_error_message) { | |
2484 | ||
2485 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
f1d075dc ZJS |
2486 | const char *unit; |
2487 | Job *job; | |
2488 | Unit *target; | |
6acca5fc LP |
2489 | int r; |
2490 | ||
8755dbad | 2491 | if (arg_default_unit) |
f1d075dc | 2492 | unit = arg_default_unit; |
8755dbad | 2493 | else if (in_initrd()) |
f1d075dc | 2494 | unit = SPECIAL_INITRD_TARGET; |
8755dbad | 2495 | else |
f1d075dc | 2496 | unit = SPECIAL_DEFAULT_TARGET; |
8755dbad | 2497 | |
f1d075dc | 2498 | log_debug("Activating default unit: %s", unit); |
8755dbad | 2499 | |
f1d075dc | 2500 | r = manager_load_startable_unit_or_warn(m, unit, NULL, &target); |
8755dbad ZJS |
2501 | if (r < 0 && in_initrd() && !arg_default_unit) { |
2502 | /* Fall back to default.target, which we used to always use by default. Only do this if no | |
2503 | * explicit configuration was given. */ | |
2504 | ||
2505 | log_info("Falling back to " SPECIAL_DEFAULT_TARGET "."); | |
6acca5fc | 2506 | |
8755dbad ZJS |
2507 | r = manager_load_startable_unit_or_warn(m, SPECIAL_DEFAULT_TARGET, NULL, &target); |
2508 | } | |
4109ede7 | 2509 | if (r < 0) { |
8755dbad | 2510 | log_info("Falling back to " SPECIAL_RESCUE_TARGET "."); |
6acca5fc | 2511 | |
4109ede7 | 2512 | r = manager_load_startable_unit_or_warn(m, SPECIAL_RESCUE_TARGET, NULL, &target); |
6acca5fc | 2513 | if (r < 0) { |
8755dbad ZJS |
2514 | *ret_error_message = r == -ERFKILL ? SPECIAL_RESCUE_TARGET " masked" |
2515 | : "Failed to load " SPECIAL_RESCUE_TARGET; | |
4109ede7 | 2516 | return r; |
6acca5fc LP |
2517 | } |
2518 | } | |
2519 | ||
2520 | assert(target->load_state == UNIT_LOADED); | |
2521 | ||
f1d075dc | 2522 | r = manager_add_job(m, JOB_START, target, JOB_ISOLATE, NULL, &error, &job); |
6acca5fc LP |
2523 | if (r == -EPERM) { |
2524 | log_debug_errno(r, "Default target could not be isolated, starting instead: %s", bus_error_message(&error, r)); | |
2525 | ||
2526 | sd_bus_error_free(&error); | |
2527 | ||
f1d075dc | 2528 | r = manager_add_job(m, JOB_START, target, JOB_REPLACE, NULL, &error, &job); |
6acca5fc LP |
2529 | if (r < 0) { |
2530 | *ret_error_message = "Failed to start default target"; | |
ad5db940 OJ |
2531 | return log_struct_errno(LOG_EMERG, r, |
2532 | LOG_MESSAGE("Failed to start default target: %s", bus_error_message(&error, r)), | |
2533 | "MESSAGE_ID=" SD_MESSAGE_CORE_START_TARGET_FAILED_STR); | |
6acca5fc LP |
2534 | } |
2535 | ||
2536 | } else if (r < 0) { | |
2537 | *ret_error_message = "Failed to isolate default target"; | |
ad5db940 OJ |
2538 | return log_struct_errno(LOG_EMERG, r, |
2539 | LOG_MESSAGE("Failed to isolate default target: %s", bus_error_message(&error, r)), | |
2540 | "MESSAGE_ID=" SD_MESSAGE_CORE_ISOLATE_TARGET_FAILED_STR); | |
c86c31d9 ZJS |
2541 | } else |
2542 | log_info("Queued %s job for default target %s.", | |
2543 | job_type_to_string(job->type), | |
04d232d8 | 2544 | unit_status_string(job->unit, NULL)); |
6acca5fc | 2545 | |
f1d075dc | 2546 | m->default_unit_job_id = job->id; |
6acca5fc LP |
2547 | |
2548 | return 0; | |
2549 | } | |
2550 | ||
a9fd4cd1 FB |
2551 | static void save_rlimits(struct rlimit *saved_rlimit_nofile, |
2552 | struct rlimit *saved_rlimit_memlock) { | |
2553 | ||
2554 | assert(saved_rlimit_nofile); | |
2555 | assert(saved_rlimit_memlock); | |
2556 | ||
2557 | if (getrlimit(RLIMIT_NOFILE, saved_rlimit_nofile) < 0) | |
2558 | log_warning_errno(errno, "Reading RLIMIT_NOFILE failed, ignoring: %m"); | |
2559 | ||
2560 | if (getrlimit(RLIMIT_MEMLOCK, saved_rlimit_memlock) < 0) | |
2561 | log_warning_errno(errno, "Reading RLIMIT_MEMLOCK failed, ignoring: %m"); | |
2562 | } | |
2563 | ||
2564 | static void fallback_rlimit_nofile(const struct rlimit *saved_rlimit_nofile) { | |
2565 | struct rlimit *rl; | |
2566 | ||
c9e120e0 | 2567 | if (arg_defaults.rlimit[RLIMIT_NOFILE]) |
a9fd4cd1 FB |
2568 | return; |
2569 | ||
2570 | /* Make sure forked processes get limits based on the original kernel setting */ | |
2571 | ||
2572 | rl = newdup(struct rlimit, saved_rlimit_nofile, 1); | |
2573 | if (!rl) { | |
2574 | log_oom(); | |
2575 | return; | |
2576 | } | |
2577 | ||
2578 | /* Bump the hard limit for system services to a substantially higher value. The default | |
2579 | * hard limit current kernels set is pretty low (4K), mostly for historical | |
2580 | * reasons. According to kernel developers, the fd handling in recent kernels has been | |
2581 | * optimized substantially enough, so that we can bump the limit now, without paying too | |
2582 | * high a price in memory or performance. Note however that we only bump the hard limit, | |
2583 | * not the soft limit. That's because select() works the way it works, and chokes on fds | |
2584 | * >= 1024. If we'd bump the soft limit globally, it might accidentally happen to | |
2585 | * unexpecting programs that they get fds higher than what they can process using | |
2586 | * select(). By only bumping the hard limit but leaving the low limit as it is we avoid | |
2587 | * this pitfall: programs that are written by folks aware of the select() problem in mind | |
2588 | * (and thus use poll()/epoll instead of select(), the way everybody should) can | |
2589 | * explicitly opt into high fds by bumping their soft limit beyond 1024, to the hard limit | |
2590 | * we pass. */ | |
4870133b | 2591 | if (arg_runtime_scope == RUNTIME_SCOPE_SYSTEM) { |
a9fd4cd1 FB |
2592 | int nr; |
2593 | ||
2594 | /* Get the underlying absolute limit the kernel enforces */ | |
2595 | nr = read_nr_open(); | |
2596 | ||
2597 | rl->rlim_max = MIN((rlim_t) nr, MAX(rl->rlim_max, (rlim_t) HIGH_RLIMIT_NOFILE)); | |
2598 | } | |
2599 | ||
2600 | /* If for some reason we were invoked with a soft limit above 1024 (which should never | |
2601 | * happen!, but who knows what we get passed in from pam_limit when invoked as --user | |
2602 | * instance), then lower what we pass on to not confuse our children */ | |
2603 | rl->rlim_cur = MIN(rl->rlim_cur, (rlim_t) FD_SETSIZE); | |
2604 | ||
c9e120e0 | 2605 | arg_defaults.rlimit[RLIMIT_NOFILE] = rl; |
a9fd4cd1 FB |
2606 | } |
2607 | ||
2608 | static void fallback_rlimit_memlock(const struct rlimit *saved_rlimit_memlock) { | |
2609 | struct rlimit *rl; | |
2610 | ||
2611 | /* Pass the original value down to invoked processes */ | |
2612 | ||
c9e120e0 | 2613 | if (arg_defaults.rlimit[RLIMIT_MEMLOCK]) |
a9fd4cd1 FB |
2614 | return; |
2615 | ||
2616 | rl = newdup(struct rlimit, saved_rlimit_memlock, 1); | |
2617 | if (!rl) { | |
2618 | log_oom(); | |
2619 | return; | |
2620 | } | |
2621 | ||
4870133b | 2622 | if (arg_runtime_scope == RUNTIME_SCOPE_SYSTEM) { |
852b6250 LP |
2623 | /* Raise the default limit to 8M also on old kernels and in containers (8M is the kernel |
2624 | * default for this since kernel 5.16) */ | |
2625 | rl->rlim_max = MAX(rl->rlim_max, (rlim_t) DEFAULT_RLIMIT_MEMLOCK); | |
2626 | rl->rlim_cur = MAX(rl->rlim_cur, (rlim_t) DEFAULT_RLIMIT_MEMLOCK); | |
2627 | } | |
2628 | ||
c9e120e0 | 2629 | arg_defaults.rlimit[RLIMIT_MEMLOCK] = rl; |
a9fd4cd1 FB |
2630 | } |
2631 | ||
d55ed7de | 2632 | static void setenv_manager_environment(void) { |
d55ed7de ZJS |
2633 | int r; |
2634 | ||
2635 | STRV_FOREACH(p, arg_manager_environment) { | |
2636 | log_debug("Setting '%s' in our own environment.", *p); | |
2637 | ||
2638 | r = putenv_dup(*p, true); | |
2639 | if (r < 0) | |
2640 | log_warning_errno(errno, "Failed to setenv \"%s\", ignoring: %m", *p); | |
2641 | } | |
2642 | } | |
2643 | ||
fb39af4c ZJS |
2644 | static void reset_arguments(void) { |
2645 | /* Frees/resets arg_* variables, with a few exceptions commented below. */ | |
970777b5 LP |
2646 | |
2647 | arg_default_unit = mfree(arg_default_unit); | |
fb39af4c | 2648 | |
4870133b | 2649 | /* arg_runtime_scope — ignore */ |
fb39af4c ZJS |
2650 | |
2651 | arg_dump_core = true; | |
2652 | arg_crash_chvt = -1; | |
2653 | arg_crash_shell = false; | |
7a66f215 | 2654 | arg_crash_action = CRASH_FREEZE; |
970777b5 | 2655 | arg_confirm_spawn = mfree(arg_confirm_spawn); |
fb39af4c | 2656 | arg_show_status = _SHOW_STATUS_INVALID; |
36cf4507 | 2657 | arg_status_unit_format = STATUS_UNIT_FORMAT_DEFAULT; |
fb39af4c ZJS |
2658 | arg_switched_root = false; |
2659 | arg_pager_flags = 0; | |
2660 | arg_service_watchdogs = true; | |
c9e120e0 LP |
2661 | |
2662 | unit_defaults_done(&arg_defaults); | |
ea09a416 | 2663 | unit_defaults_init(&arg_defaults, arg_runtime_scope); |
c9e120e0 | 2664 | |
fb39af4c | 2665 | arg_runtime_watchdog = 0; |
65224c1d | 2666 | arg_reboot_watchdog = 10 * USEC_PER_MINUTE; |
acafd7d8 | 2667 | arg_kexec_watchdog = 0; |
5717062e | 2668 | arg_pretimeout_watchdog = 0; |
919ea64f ŁS |
2669 | arg_early_core_pattern = mfree(arg_early_core_pattern); |
2670 | arg_watchdog_device = mfree(arg_watchdog_device); | |
aff3a9e1 | 2671 | arg_watchdog_pretimeout_governor = mfree(arg_watchdog_pretimeout_governor); |
fb39af4c | 2672 | |
970777b5 | 2673 | arg_default_environment = strv_free(arg_default_environment); |
d55ed7de | 2674 | arg_manager_environment = strv_free(arg_manager_environment); |
fb39af4c | 2675 | |
3fd5190b | 2676 | arg_capability_bounding_set = CAP_MASK_UNSET; |
fb39af4c | 2677 | arg_no_new_privs = false; |
ffc1ec73 | 2678 | arg_protect_system = -1; |
fb39af4c | 2679 | arg_timer_slack_nsec = NSEC_INFINITY; |
fb39af4c | 2680 | |
970777b5 | 2681 | arg_syscall_archs = set_free(arg_syscall_archs); |
61fbbac1 | 2682 | |
fb39af4c ZJS |
2683 | /* arg_serialization — ignore */ |
2684 | ||
fb39af4c ZJS |
2685 | arg_machine_id = (sd_id128_t) {}; |
2686 | arg_cad_burst_action = EMERGENCY_ACTION_REBOOT_FORCE; | |
fb39af4c | 2687 | |
61fbbac1 | 2688 | cpu_set_reset(&arg_cpu_affinity); |
b070c7c0 | 2689 | numa_policy_reset(&arg_numa_policy); |
d247f232 LP |
2690 | |
2691 | arg_random_seed = mfree(arg_random_seed); | |
2692 | arg_random_seed_size = 0; | |
33d943d1 | 2693 | arg_clock_usec = 0; |
d4a402e4 | 2694 | |
856bfaeb LB |
2695 | arg_reload_limit_interval_sec = 0; |
2696 | arg_reload_limit_burst = 0; | |
d4a402e4 LP |
2697 | } |
2698 | ||
2699 | static void determine_default_oom_score_adjust(void) { | |
2700 | int r, a, b; | |
2701 | ||
2702 | /* Run our services at slightly higher OOM score than ourselves. But let's be conservative here, and | |
2703 | * do this only if we don't run as root (i.e. only if we are run in user mode, for an unprivileged | |
2704 | * user). */ | |
2705 | ||
c9e120e0 | 2706 | if (arg_defaults.oom_score_adjust_set) |
d4a402e4 LP |
2707 | return; |
2708 | ||
2709 | if (getuid() == 0) | |
2710 | return; | |
2711 | ||
2712 | r = get_oom_score_adjust(&a); | |
2713 | if (r < 0) | |
2714 | return (void) log_warning_errno(r, "Failed to determine current OOM score adjustment value, ignoring: %m"); | |
2715 | ||
2716 | assert_cc(100 <= OOM_SCORE_ADJ_MAX); | |
2717 | b = a >= OOM_SCORE_ADJ_MAX - 100 ? OOM_SCORE_ADJ_MAX : a + 100; | |
2718 | ||
2719 | if (a == b) | |
2720 | return; | |
2721 | ||
c9e120e0 LP |
2722 | arg_defaults.oom_score_adjust = b; |
2723 | arg_defaults.oom_score_adjust_set = true; | |
970777b5 LP |
2724 | } |
2725 | ||
a9fd4cd1 FB |
2726 | static int parse_configuration(const struct rlimit *saved_rlimit_nofile, |
2727 | const struct rlimit *saved_rlimit_memlock) { | |
97d1fb94 LP |
2728 | int r; |
2729 | ||
a9fd4cd1 FB |
2730 | assert(saved_rlimit_nofile); |
2731 | assert(saved_rlimit_memlock); | |
2732 | ||
fb39af4c ZJS |
2733 | /* Assign configuration defaults */ |
2734 | reset_arguments(); | |
2735 | ||
97d1fb94 | 2736 | r = parse_config_file(); |
470a5e6d ZJS |
2737 | if (r < 0) |
2738 | log_warning_errno(r, "Failed to parse config file, ignoring: %m"); | |
97d1fb94 | 2739 | |
4870133b | 2740 | if (arg_runtime_scope == RUNTIME_SCOPE_SYSTEM) { |
97d1fb94 LP |
2741 | r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, 0); |
2742 | if (r < 0) | |
2743 | log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); | |
2744 | } | |
2745 | ||
a9fd4cd1 FB |
2746 | /* Initialize some default rlimits for services if they haven't been configured */ |
2747 | fallback_rlimit_nofile(saved_rlimit_nofile); | |
2748 | fallback_rlimit_memlock(saved_rlimit_memlock); | |
2749 | ||
97d1fb94 LP |
2750 | /* Note that this also parses bits from the kernel command line, including "debug". */ |
2751 | log_parse_environment(); | |
2752 | ||
db33214b | 2753 | /* Initialize the show status setting if it hasn't been set explicitly yet */ |
7a293242 | 2754 | if (arg_show_status == _SHOW_STATUS_INVALID) |
db33214b LP |
2755 | arg_show_status = SHOW_STATUS_YES; |
2756 | ||
d4a402e4 LP |
2757 | /* Slightly raise the OOM score for our services if we are running for unprivileged users. */ |
2758 | determine_default_oom_score_adjust(); | |
2759 | ||
d55ed7de ZJS |
2760 | /* Push variables into the manager environment block */ |
2761 | setenv_manager_environment(); | |
2762 | ||
a4303b40 DDM |
2763 | /* Parse log environment variables again to take into account any new environment variables. */ |
2764 | log_parse_environment(); | |
2765 | ||
97d1fb94 LP |
2766 | return 0; |
2767 | } | |
2768 | ||
b0d7c989 LP |
2769 | static int safety_checks(void) { |
2770 | ||
febf46a4 | 2771 | if (getpid_cached() == 1 && |
baaa35ad ZJS |
2772 | arg_action != ACTION_RUN) |
2773 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
2774 | "Unsupported execution mode while PID 1."); | |
febf46a4 LP |
2775 | |
2776 | if (getpid_cached() == 1 && | |
4870133b | 2777 | arg_runtime_scope == RUNTIME_SCOPE_USER) |
baaa35ad ZJS |
2778 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), |
2779 | "Can't run --user mode as PID 1."); | |
febf46a4 LP |
2780 | |
2781 | if (arg_action == ACTION_RUN && | |
4870133b | 2782 | arg_runtime_scope == RUNTIME_SCOPE_SYSTEM && |
baaa35ad ZJS |
2783 | getpid_cached() != 1) |
2784 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
2785 | "Can't run system mode unless PID 1."); | |
febf46a4 | 2786 | |
b0d7c989 | 2787 | if (arg_action == ACTION_TEST && |
baaa35ad ZJS |
2788 | geteuid() == 0) |
2789 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), | |
2790 | "Don't run test mode as root."); | |
b0d7c989 | 2791 | |
4870133b LP |
2792 | switch (arg_runtime_scope) { |
2793 | ||
2794 | case RUNTIME_SCOPE_USER: | |
2795 | ||
2796 | if (arg_action == ACTION_RUN && | |
2797 | sd_booted() <= 0) | |
2798 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
2799 | "Trying to run as user instance, but the system has not been booted with systemd."); | |
2800 | ||
2801 | if (arg_action == ACTION_RUN && | |
2802 | !getenv("XDG_RUNTIME_DIR")) | |
2803 | return log_error_errno(SYNTHETIC_ERRNO(EUNATCH), | |
2804 | "Trying to run as user instance, but $XDG_RUNTIME_DIR is not set."); | |
2805 | ||
2806 | break; | |
b0d7c989 | 2807 | |
4870133b LP |
2808 | case RUNTIME_SCOPE_SYSTEM: |
2809 | if (arg_action == ACTION_RUN && | |
2810 | running_in_chroot() > 0) | |
2811 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
2812 | "Cannot be run in a chroot() environment."); | |
2813 | break; | |
b0d7c989 | 2814 | |
4870133b LP |
2815 | default: |
2816 | assert_not_reached(); | |
2817 | } | |
b0d7c989 LP |
2818 | |
2819 | return 0; | |
2820 | } | |
2821 | ||
74da609f LP |
2822 | static int initialize_security( |
2823 | bool *loaded_policy, | |
2824 | dual_timestamp *security_start_timestamp, | |
2825 | dual_timestamp *security_finish_timestamp, | |
2826 | const char **ret_error_message) { | |
2827 | ||
2828 | int r; | |
2829 | ||
2830 | assert(loaded_policy); | |
2831 | assert(security_start_timestamp); | |
2832 | assert(security_finish_timestamp); | |
2833 | assert(ret_error_message); | |
2834 | ||
fa5a0251 | 2835 | dual_timestamp_now(security_start_timestamp); |
74da609f | 2836 | |
97149f40 | 2837 | r = mac_selinux_setup(loaded_policy); |
74da609f LP |
2838 | if (r < 0) { |
2839 | *ret_error_message = "Failed to load SELinux policy"; | |
2840 | return r; | |
2841 | } | |
2842 | ||
2843 | r = mac_smack_setup(loaded_policy); | |
2844 | if (r < 0) { | |
2845 | *ret_error_message = "Failed to load SMACK policy"; | |
2846 | return r; | |
2847 | } | |
2848 | ||
2ffadd3c Y |
2849 | r = mac_apparmor_setup(); |
2850 | if (r < 0) { | |
2851 | *ret_error_message = "Failed to load AppArmor policy"; | |
2852 | return r; | |
2853 | } | |
2854 | ||
74da609f LP |
2855 | r = ima_setup(); |
2856 | if (r < 0) { | |
2857 | *ret_error_message = "Failed to load IMA policy"; | |
2858 | return r; | |
2859 | } | |
2860 | ||
fa5a0251 | 2861 | dual_timestamp_now(security_finish_timestamp); |
74da609f LP |
2862 | return 0; |
2863 | } | |
2864 | ||
efeb853f LP |
2865 | static int collect_fds(FDSet **ret_fds, const char **ret_error_message) { |
2866 | int r; | |
2867 | ||
2868 | assert(ret_fds); | |
2869 | assert(ret_error_message); | |
2870 | ||
a3dff21a LP |
2871 | /* Pick up all fds passed to us. We apply a filter here: we only take the fds that have O_CLOEXEC |
2872 | * off. All fds passed via execve() to us must have O_CLOEXEC off, and our own code and dependencies | |
2873 | * should be clean enough to set O_CLOEXEC universally. Thus checking the bit should be a safe | |
2874 | * mechanism to distinguish passed in fds from our own. | |
2875 | * | |
2876 | * Why bother? Some subsystems we initialize early, specifically selinux might keep fds open in our | |
2877 | * process behind our back. We should not take possession of that (and then accidentally close | |
2878 | * it). SELinux thankfully sets O_CLOEXEC on its fds, so this test should work. */ | |
2879 | r = fdset_new_fill(/* filter_cloexec= */ 0, ret_fds); | |
efeb853f LP |
2880 | if (r < 0) { |
2881 | *ret_error_message = "Failed to allocate fd set"; | |
ad5db940 OJ |
2882 | return log_struct_errno(LOG_EMERG, r, |
2883 | LOG_MESSAGE("Failed to allocate fd set: %m"), | |
2884 | "MESSAGE_ID=" SD_MESSAGE_CORE_FD_SET_FAILED_STR); | |
efeb853f LP |
2885 | } |
2886 | ||
a3dff21a LP |
2887 | /* The serialization fd should have O_CLOEXEC turned on already, let's verify that we didn't pick it up here */ |
2888 | assert_se(!arg_serialization || !fdset_contains(*ret_fds, fileno(arg_serialization))); | |
efeb853f LP |
2889 | |
2890 | return 0; | |
2891 | } | |
2892 | ||
2e51b31c LP |
2893 | static void setup_console_terminal(bool skip_setup) { |
2894 | ||
4870133b | 2895 | if (arg_runtime_scope != RUNTIME_SCOPE_SYSTEM) |
2e51b31c LP |
2896 | return; |
2897 | ||
2898 | /* Become a session leader if we aren't one yet. */ | |
2899 | (void) setsid(); | |
2900 | ||
ff3a7019 ZJS |
2901 | /* If we are init, we connect stdin/stdout/stderr to /dev/null and make sure we don't have a |
2902 | * controlling tty. */ | |
2e51b31c LP |
2903 | (void) release_terminal(); |
2904 | ||
2905 | /* Reset the console, but only if this is really init and we are freshly booted */ | |
2906 | if (getpid_cached() == 1 && !skip_setup) | |
2907 | (void) console_setup(); | |
2908 | } | |
2909 | ||
aa40ff07 LP |
2910 | static bool early_skip_setup_check(int argc, char *argv[]) { |
2911 | bool found_deserialize = false; | |
aa40ff07 | 2912 | |
ff3a7019 ZJS |
2913 | /* Determine if this is a reexecution or normal bootup. We do the full command line parsing much |
2914 | * later, so let's just have a quick peek here. Note that if we have switched root, do all the | |
2915 | * special setup things anyway, even if in that case we also do deserialization. */ | |
aa40ff07 | 2916 | |
431733b8 | 2917 | for (int i = 1; i < argc; i++) |
aa40ff07 LP |
2918 | if (streq(argv[i], "--switched-root")) |
2919 | return false; /* If we switched root, don't skip the setup. */ | |
09567df7 | 2920 | else if (startswith(argv[i], "--deserialize=") || streq(argv[i], "--deserialize")) |
aa40ff07 | 2921 | found_deserialize = true; |
aa40ff07 LP |
2922 | |
2923 | return found_deserialize; /* When we are deserializing, then we are reexecuting, hence avoid the extensive setup */ | |
2924 | } | |
2925 | ||
0e06a031 LP |
2926 | static int save_env(void) { |
2927 | char **l; | |
2928 | ||
2929 | l = strv_copy(environ); | |
2930 | if (!l) | |
2931 | return -ENOMEM; | |
2932 | ||
2933 | strv_free_and_replace(saved_env, l); | |
2934 | return 0; | |
2935 | } | |
2936 | ||
60918275 | 2937 | int main(int argc, char *argv[]) { |
5409c6fc ZJS |
2938 | dual_timestamp |
2939 | initrd_timestamp = DUAL_TIMESTAMP_NULL, | |
2940 | userspace_timestamp = DUAL_TIMESTAMP_NULL, | |
2941 | kernel_timestamp = DUAL_TIMESTAMP_NULL, | |
2942 | security_start_timestamp = DUAL_TIMESTAMP_NULL, | |
2943 | security_finish_timestamp = DUAL_TIMESTAMP_NULL; | |
ddfa8b0b LP |
2944 | struct rlimit saved_rlimit_nofile = RLIMIT_MAKE_CONST(0), |
2945 | saved_rlimit_memlock = RLIMIT_MAKE_CONST(RLIM_INFINITY); /* The original rlimits we passed | |
2946 | * in. Note we use different values | |
2947 | * for the two that indicate whether | |
2948 | * these fields are initialized! */ | |
5409c6fc | 2949 | bool skip_setup, loaded_policy = false, queue_default_job = false, first_boot = false; |
625e8690 | 2950 | char *switch_root_dir = NULL, *switch_root_init = NULL; |
9d76d730 | 2951 | usec_t before_startup, after_startup; |
625e8690 | 2952 | static char systemd[] = "systemd"; |
b22d392d | 2953 | const char *error_message = NULL; |
625e8690 LP |
2954 | int r, retval = EXIT_FAILURE; |
2955 | Manager *m = NULL; | |
a16e1123 | 2956 | FDSet *fds = NULL; |
27b14a22 | 2957 | |
61b9769b | 2958 | assert_se(argc > 0 && !isempty(argv[0])); |
cf3095ac | 2959 | |
d72a8f10 | 2960 | /* SysV compatibility: redirect init → telinit */ |
6808a0bc | 2961 | redirect_telinit(argc, argv); |
2cb1a60d | 2962 | |
d72a8f10 | 2963 | /* Take timestamps early on */ |
c3a170f3 | 2964 | dual_timestamp_from_monotonic(&kernel_timestamp, 0); |
fa5a0251 | 2965 | dual_timestamp_now(&userspace_timestamp); |
c3a170f3 | 2966 | |
d72a8f10 | 2967 | /* Figure out whether we need to do initialize the system, or if we already did that because we are |
ff3a7019 | 2968 | * reexecuting. */ |
aa40ff07 | 2969 | skip_setup = early_skip_setup_check(argc, argv); |
d03bc1b8 | 2970 | |
ff3a7019 ZJS |
2971 | /* If we get started via the /sbin/init symlink then we are called 'init'. After a subsequent |
2972 | * reexecution we are then called 'systemd'. That is confusing, hence let's call us systemd | |
2973 | * right-away. */ | |
f3b6a3ed | 2974 | program_invocation_short_name = systemd; |
eee8b7ab | 2975 | (void) prctl(PR_SET_NAME, systemd); |
5d6b1584 | 2976 | |
d72a8f10 | 2977 | /* Save the original command line */ |
36fea155 | 2978 | save_argc_argv(argc, argv); |
f3b6a3ed | 2979 | |
0e06a031 LP |
2980 | /* Save the original environment as we might need to restore it if we're requested to execute another |
2981 | * system manager later. */ | |
2982 | r = save_env(); | |
2983 | if (r < 0) { | |
2984 | error_message = "Failed to copy environment block"; | |
2985 | goto finish; | |
2986 | } | |
a5cede8c | 2987 | |
6fdb8de4 | 2988 | /* Make sure that if the user says "syslog" we actually log to the journal. */ |
c1dc6153 | 2989 | log_set_upgrade_syslog_to_journal(true); |
bbe63281 | 2990 | |
df0ff127 | 2991 | if (getpid_cached() == 1) { |
b5752d23 | 2992 | /* When we run as PID 1 force system mode */ |
4870133b | 2993 | arg_runtime_scope = RUNTIME_SCOPE_SYSTEM; |
b5752d23 | 2994 | |
48a601fe | 2995 | /* Disable the umask logic */ |
90dc8c2e MG |
2996 | umask(0); |
2997 | ||
ff3a7019 ZJS |
2998 | /* Make sure that at least initially we do not ever log to journald/syslogd, because it might |
2999 | * not be activated yet (even though the log socket for it exists). */ | |
d075092f LP |
3000 | log_set_prohibit_ipc(true); |
3001 | ||
ff3a7019 ZJS |
3002 | /* Always reopen /dev/console when running as PID 1 or one of its pre-execve() children. This |
3003 | * is important so that we never end up logging to any foreign stderr, for example if we have | |
3004 | * to log in a child process right before execve()'ing the actual binary, at a point in time | |
3005 | * where socket activation stderr/stdout area already set up. */ | |
48a601fe | 3006 | log_set_always_reopen_console(true); |
48a601fe | 3007 | |
92890452 | 3008 | if (detect_container() <= 0) { |
4f8d551f | 3009 | |
92890452 | 3010 | /* Running outside of a container as PID 1 */ |
1e344c1d | 3011 | log_set_target_and_open(LOG_TARGET_KMSG); |
a866073d | 3012 | |
92890452 LP |
3013 | if (in_initrd()) |
3014 | initrd_timestamp = userspace_timestamp; | |
c3ba6250 | 3015 | |
92890452 LP |
3016 | if (!skip_setup) { |
3017 | r = mount_setup_early(); | |
3018 | if (r < 0) { | |
3019 | error_message = "Failed to mount early API filesystems"; | |
3020 | goto finish; | |
3021 | } | |
d2f57745 DDM |
3022 | } |
3023 | ||
3024 | /* We might have just mounted /proc, so let's try to parse the kernel | |
3025 | * command line log arguments immediately. */ | |
3026 | log_parse_environment(); | |
92890452 | 3027 | |
d2f57745 DDM |
3028 | /* Let's open the log backend a second time, in case the first time didn't |
3029 | * work. Quite possibly we have mounted /dev just now, so /dev/kmsg became | |
3030 | * available, and it previously wasn't. */ | |
3031 | log_open(); | |
0a2eef1e | 3032 | |
d2f57745 | 3033 | if (!skip_setup) { |
6123dfaa ZJS |
3034 | disable_printk_ratelimit(); |
3035 | ||
92890452 LP |
3036 | r = initialize_security( |
3037 | &loaded_policy, | |
3038 | &security_start_timestamp, | |
3039 | &security_finish_timestamp, | |
3040 | &error_message); | |
3041 | if (r < 0) | |
3042 | goto finish; | |
d723cd65 | 3043 | } |
eee8b7ab | 3044 | |
a452c807 DDM |
3045 | if (mac_init() < 0) { |
3046 | error_message = "Failed to initialize MAC support"; | |
96694e99 | 3047 | goto finish; |
92890452 | 3048 | } |
0b3325e7 | 3049 | |
92890452 LP |
3050 | if (!skip_setup) |
3051 | initialize_clock(); | |
3052 | ||
ff3a7019 ZJS |
3053 | /* Set the default for later on, but don't actually open the logs like this for |
3054 | * now. Note that if we are transitioning from the initrd there might still be | |
3055 | * journal fd open, and we shouldn't attempt opening that before we parsed | |
3056 | * /proc/cmdline which might redirect output elsewhere. */ | |
92890452 LP |
3057 | log_set_target(LOG_TARGET_JOURNAL_OR_KMSG); |
3058 | ||
3059 | } else { | |
3060 | /* Running inside a container, as PID 1 */ | |
1e344c1d | 3061 | log_set_target_and_open(LOG_TARGET_CONSOLE); |
92890452 LP |
3062 | |
3063 | /* For later on, see above... */ | |
3064 | log_set_target(LOG_TARGET_JOURNAL); | |
3065 | ||
45250e66 | 3066 | /* clear the kernel timestamp, because we are in a container */ |
92890452 | 3067 | kernel_timestamp = DUAL_TIMESTAMP_NULL; |
cb6531be | 3068 | } |
7948c4df | 3069 | |
92890452 | 3070 | initialize_coredump(skip_setup); |
a866073d | 3071 | |
92890452 LP |
3072 | r = fixup_environment(); |
3073 | if (r < 0) { | |
ad5db940 OJ |
3074 | log_struct_errno(LOG_EMERG, r, |
3075 | LOG_MESSAGE("Failed to fix up PID 1 environment: %m"), | |
3076 | "MESSAGE_ID=" SD_MESSAGE_CORE_PID1_ENVIRONMENT_STR); | |
92890452 LP |
3077 | error_message = "Failed to fix up PID1 environment"; |
3078 | goto finish; | |
3079 | } | |
a866073d | 3080 | |
ff3a7019 ZJS |
3081 | /* Try to figure out if we can use colors with the console. No need to do that for user |
3082 | * instances since they never log into the console. */ | |
3a18b604 | 3083 | log_show_color(colors_enabled()); |
92890452 | 3084 | |
c76cf844 AK |
3085 | r = make_null_stdio(); |
3086 | if (r < 0) | |
92890452 | 3087 | log_warning_errno(r, "Failed to redirect standard streams to /dev/null, ignoring: %m"); |
f84f9974 | 3088 | |
a132bef0 | 3089 | /* Load the kernel modules early. */ |
2e75e2a8 | 3090 | if (!skip_setup) |
e921a00d | 3091 | (void) kmod_setup(); |
2e75e2a8 | 3092 | |
3196e423 | 3093 | /* Mount /proc, /sys and friends, so that /proc/cmdline and /proc/$PID/fd is available. */ |
f74349d8 | 3094 | r = mount_setup(loaded_policy, skip_setup); |
cb6531be ZJS |
3095 | if (r < 0) { |
3096 | error_message = "Failed to mount API filesystems"; | |
8efe3c01 | 3097 | goto finish; |
cb6531be | 3098 | } |
c18ecf03 | 3099 | |
fbc8d90b | 3100 | if (!skip_setup) { |
f2512de8 MY |
3101 | /* Before we actually start deleting cgroup v1 code, make it harder to boot |
3102 | * in cgroupv1 mode first. See also #30852. */ | |
3103 | ||
fbc8d90b MY |
3104 | r = mount_cgroup_legacy_controllers(loaded_policy); |
3105 | if (r < 0) { | |
f2512de8 MY |
3106 | if (r == -ERFKILL) |
3107 | error_message = "Refusing to run under cgroup v1, SYSTEMD_CGROUP_ENABLE_LEGACY_FORCE=1 not specified on kernel command line"; | |
3108 | else | |
3109 | error_message = "Failed to mount cgroup v1 hierarchy"; | |
fbc8d90b MY |
3110 | goto finish; |
3111 | } | |
f2512de8 MY |
3112 | if (r > 0) { |
3113 | log_full(LOG_CRIT, "Legacy cgroup v1 support selected. This is no longer supported. Will proceed anyway after 30s."); | |
3114 | (void) usleep_safe(30 * USEC_PER_SEC); | |
3115 | } | |
fbc8d90b MY |
3116 | } |
3117 | ||
0be72218 JD |
3118 | /* The efivarfs is now mounted, let's lock down the system token. */ |
3119 | lock_down_efi_variables(); | |
209b2592 FB |
3120 | |
3121 | /* Cache command-line options passed from EFI variables */ | |
3122 | if (!skip_setup) | |
3123 | (void) cache_efi_options_variable(); | |
3196e423 LP |
3124 | } else { |
3125 | /* Running as user instance */ | |
4870133b | 3126 | arg_runtime_scope = RUNTIME_SCOPE_USER; |
2a646b1d | 3127 | log_set_always_reopen_console(true); |
1e344c1d | 3128 | log_set_target_and_open(LOG_TARGET_AUTO); |
3196e423 LP |
3129 | |
3130 | /* clear the kernel timestamp, because we are not PID 1 */ | |
3131 | kernel_timestamp = DUAL_TIMESTAMP_NULL; | |
3132 | ||
963b6b90 ŁS |
3133 | /* Clear ambient capabilities, so services do not inherit them implicitly. Dropping them does |
3134 | * not affect the permitted and effective sets which are important for the manager itself to | |
3135 | * operate. */ | |
3136 | capability_ambient_set_apply(0, /* also_inherit= */ false); | |
3137 | ||
a452c807 DDM |
3138 | if (mac_init() < 0) { |
3139 | error_message = "Failed to initialize MAC support"; | |
3196e423 LP |
3140 | goto finish; |
3141 | } | |
0c85a4f3 | 3142 | } |
4ade7963 | 3143 | |
a9fd4cd1 FB |
3144 | /* Save the original RLIMIT_NOFILE/RLIMIT_MEMLOCK so that we can reset it later when |
3145 | * transitioning from the initrd to the main systemd or suchlike. */ | |
3146 | save_rlimits(&saved_rlimit_nofile, &saved_rlimit_memlock); | |
3147 | ||
4ade7963 | 3148 | /* Reset all signal handlers. */ |
ce30c8dc | 3149 | (void) reset_all_signal_handlers(); |
9c274488 | 3150 | (void) ignore_signals(SIGNALS_IGNORE); |
078e4539 | 3151 | |
ffe5c01e FB |
3152 | (void) parse_configuration(&saved_rlimit_nofile, &saved_rlimit_memlock); |
3153 | ||
3154 | r = parse_argv(argc, argv); | |
3155 | if (r < 0) { | |
7c52d523 | 3156 | error_message = "Failed to parse command line arguments"; |
f170852a | 3157 | goto finish; |
ffe5c01e | 3158 | } |
10c961b9 | 3159 | |
b0d7c989 LP |
3160 | r = safety_checks(); |
3161 | if (r < 0) | |
fe783b03 | 3162 | goto finish; |
fe783b03 | 3163 | |
5c08257b | 3164 | if (IN_SET(arg_action, ACTION_TEST, ACTION_HELP, ACTION_DUMP_CONFIGURATION_ITEMS, ACTION_DUMP_BUS_PROPERTIES, ACTION_BUS_INTROSPECT)) |
384c2c32 | 3165 | pager_open(arg_pager_flags); |
b0d7c989 LP |
3166 | |
3167 | if (arg_action != ACTION_RUN) | |
74e7579c | 3168 | skip_setup = true; |
b87c2aa6 | 3169 | |
fa0f4d8a | 3170 | if (arg_action == ACTION_HELP) { |
37ec0fdd | 3171 | retval = help() < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
f170852a | 3172 | goto finish; |
9ba0bc4e ZJS |
3173 | } else if (arg_action == ACTION_VERSION) { |
3174 | retval = version(); | |
3175 | goto finish; | |
fa0f4d8a | 3176 | } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) { |
e537352b | 3177 | unit_dump_config_items(stdout); |
22f4096c | 3178 | retval = EXIT_SUCCESS; |
e537352b | 3179 | goto finish; |
bbc1acab YW |
3180 | } else if (arg_action == ACTION_DUMP_BUS_PROPERTIES) { |
3181 | dump_bus_properties(stdout); | |
3182 | retval = EXIT_SUCCESS; | |
3183 | goto finish; | |
5c08257b ZJS |
3184 | } else if (arg_action == ACTION_BUS_INTROSPECT) { |
3185 | r = bus_manager_introspect_implementations(stdout, arg_bus_introspect); | |
3186 | retval = r >= 0 ? EXIT_SUCCESS : EXIT_FAILURE; | |
3187 | goto finish; | |
f170852a LP |
3188 | } |
3189 | ||
4c701096 | 3190 | assert_se(IN_SET(arg_action, ACTION_RUN, ACTION_TEST)); |
f170852a | 3191 | |
5a2e0c62 LP |
3192 | /* Move out of the way, so that we won't block unmounts */ |
3193 | assert_se(chdir("/") == 0); | |
3194 | ||
dea374e8 | 3195 | if (arg_action == ACTION_RUN) { |
d247f232 LP |
3196 | if (!skip_setup) { |
3197 | /* Apply the systemd.clock_usec= kernel command line switch */ | |
45250e66 | 3198 | apply_clock_update(); |
a70c72a0 | 3199 | |
d247f232 LP |
3200 | /* Apply random seed from kernel command line */ |
3201 | cmdline_take_random_seed(); | |
3202 | } | |
3203 | ||
ffc1ec73 | 3204 | /* A core pattern might have been specified via the cmdline. */ |
c6885f5f FB |
3205 | initialize_core_pattern(skip_setup); |
3206 | ||
ffc1ec73 LP |
3207 | /* Make /usr/ read-only */ |
3208 | apply_protect_system(skip_setup); | |
3209 | ||
efeb853f | 3210 | /* Close logging fds, in order not to confuse collecting passed fds and terminal logic below */ |
a70c72a0 LP |
3211 | log_close(); |
3212 | ||
3213 | /* Remember open file descriptors for later deserialization */ | |
efeb853f LP |
3214 | r = collect_fds(&fds, &error_message); |
3215 | if (r < 0) | |
dea374e8 | 3216 | goto finish; |
a16e1123 | 3217 | |
2e51b31c LP |
3218 | /* Give up any control of the console, but make sure its initialized. */ |
3219 | setup_console_terminal(skip_setup); | |
56d96fc0 | 3220 | |
a70c72a0 LP |
3221 | /* Open the logging devices, if possible and necessary */ |
3222 | log_open(); | |
56d96fc0 | 3223 | } |
4ade7963 | 3224 | |
31aef7ff | 3225 | log_execution_mode(&first_boot); |
a5dab5ce | 3226 | |
2d776038 | 3227 | r = initialize_runtime(skip_setup, |
3023f2fe | 3228 | first_boot, |
2d776038 LP |
3229 | &saved_rlimit_nofile, |
3230 | &saved_rlimit_memlock, | |
3231 | &error_message); | |
3232 | if (r < 0) | |
3233 | goto finish; | |
4096d6f5 | 3234 | |
4870133b | 3235 | r = manager_new(arg_runtime_scope, |
e0a3da1f ZJS |
3236 | arg_action == ACTION_TEST ? MANAGER_TEST_FULL : 0, |
3237 | &m); | |
e96d6be7 | 3238 | if (r < 0) { |
ad5db940 OJ |
3239 | log_struct_errno(LOG_EMERG, r, |
3240 | LOG_MESSAGE("Failed to allocate manager object: %m"), | |
3241 | "MESSAGE_ID=" SD_MESSAGE_CORE_MANAGER_ALLOCATE_STR); | |
cb6531be | 3242 | error_message = "Failed to allocate manager object"; |
60918275 LP |
3243 | goto finish; |
3244 | } | |
3245 | ||
9f9f0342 LP |
3246 | m->timestamps[MANAGER_TIMESTAMP_KERNEL] = kernel_timestamp; |
3247 | m->timestamps[MANAGER_TIMESTAMP_INITRD] = initrd_timestamp; | |
3248 | m->timestamps[MANAGER_TIMESTAMP_USERSPACE] = userspace_timestamp; | |
d4ee7bd8 YW |
3249 | m->timestamps[manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_SECURITY_START)] = security_start_timestamp; |
3250 | m->timestamps[manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_SECURITY_FINISH)] = security_finish_timestamp; | |
9e58ff9c | 3251 | |
85cb4151 | 3252 | set_manager_defaults(m); |
7b46fc6a | 3253 | set_manager_settings(m); |
fd130612 | 3254 | manager_set_first_boot(m, first_boot); |
d35fe8c0 | 3255 | manager_set_switching_root(m, arg_switched_root); |
27d340c7 | 3256 | |
bf4df7c3 | 3257 | /* Remember whether we should queue the default job */ |
d3b1c508 | 3258 | queue_default_job = !arg_serialization || arg_switched_root; |
bf4df7c3 | 3259 | |
9d76d730 LP |
3260 | before_startup = now(CLOCK_MONOTONIC); |
3261 | ||
2a7cf953 | 3262 | r = manager_startup(m, arg_serialization, fds, /* root= */ NULL); |
58f88d92 | 3263 | if (r < 0) { |
cefb3eda | 3264 | error_message = "Failed to start up manager"; |
58f88d92 ZJS |
3265 | goto finish; |
3266 | } | |
a16e1123 | 3267 | |
6acca5fc | 3268 | /* This will close all file descriptors that were opened, but not claimed by any unit. */ |
2feceb5e | 3269 | fds = fdset_free(fds); |
74ca738f | 3270 | arg_serialization = safe_fclose(arg_serialization); |
bf4df7c3 LP |
3271 | |
3272 | if (queue_default_job) { | |
6acca5fc | 3273 | r = do_queue_default_job(m, &error_message); |
718db961 | 3274 | if (r < 0) |
37d88da7 | 3275 | goto finish; |
6acca5fc | 3276 | } |
ab17a050 | 3277 | |
6acca5fc | 3278 | after_startup = now(CLOCK_MONOTONIC); |
60918275 | 3279 | |
6acca5fc LP |
3280 | log_full(arg_action == ACTION_TEST ? LOG_INFO : LOG_DEBUG, |
3281 | "Loaded units and determined initial transaction in %s.", | |
5291f26d | 3282 | FORMAT_TIMESPAN(after_startup - before_startup, 100 * USEC_PER_MSEC)); |
07672f49 | 3283 | |
6acca5fc | 3284 | if (arg_action == ACTION_TEST) { |
2a341bb9 | 3285 | manager_test_summary(m); |
6acca5fc LP |
3286 | retval = EXIT_SUCCESS; |
3287 | goto finish; | |
e965d56d | 3288 | } |
d46de8a1 | 3289 | |
5409c6fc ZJS |
3290 | r = invoke_main_loop(m, |
3291 | &saved_rlimit_nofile, | |
3292 | &saved_rlimit_memlock, | |
3293 | &retval, | |
5409c6fc ZJS |
3294 | &fds, |
3295 | &switch_root_dir, | |
3296 | &switch_root_init, | |
3297 | &error_message); | |
3298 | assert(r < 0 || IN_SET(r, MANAGER_EXIT, /* MANAGER_OK is not expected here. */ | |
3299 | MANAGER_RELOAD, | |
3300 | MANAGER_REEXECUTE, | |
3301 | MANAGER_REBOOT, | |
13ffc607 | 3302 | MANAGER_SOFT_REBOOT, |
5409c6fc ZJS |
3303 | MANAGER_POWEROFF, |
3304 | MANAGER_HALT, | |
3305 | MANAGER_KEXEC, | |
3306 | MANAGER_SWITCH_ROOT)); | |
f170852a | 3307 | |
60918275 | 3308 | finish: |
b87c2aa6 ZJS |
3309 | pager_close(); |
3310 | ||
92890452 | 3311 | if (m) { |
986935cf FB |
3312 | arg_reboot_watchdog = manager_get_watchdog(m, WATCHDOG_REBOOT); |
3313 | arg_kexec_watchdog = manager_get_watchdog(m, WATCHDOG_KEXEC); | |
92890452 LP |
3314 | m = manager_free(m); |
3315 | } | |
60918275 | 3316 | |
cc56fafe | 3317 | mac_selinux_finish(); |
b2bb3dbe | 3318 | |
13ffc607 | 3319 | if (IN_SET(r, MANAGER_REEXECUTE, MANAGER_SWITCH_ROOT, MANAGER_SOFT_REBOOT)) |
1e3eee8c ZJS |
3320 | r = do_reexecute(r, |
3321 | argc, argv, | |
3322 | &saved_rlimit_nofile, | |
3323 | &saved_rlimit_memlock, | |
3324 | fds, | |
3325 | switch_root_dir, | |
3326 | switch_root_init, | |
3327 | &error_message); /* This only returns if reexecution failed */ | |
a16e1123 | 3328 | |
74ca738f | 3329 | arg_serialization = safe_fclose(arg_serialization); |
2feceb5e | 3330 | fds = fdset_free(fds); |
a16e1123 | 3331 | |
0e06a031 LP |
3332 | saved_env = strv_free(saved_env); |
3333 | ||
349cc4a5 | 3334 | #if HAVE_VALGRIND_VALGRIND_H |
54b434b1 LP |
3335 | /* If we are PID 1 and running under valgrind, then let's exit |
3336 | * here explicitly. valgrind will only generate nice output on | |
3337 | * exit(), not on exec(), hence let's do the former not the | |
3338 | * latter here. */ | |
8a2c1fbf EJ |
3339 | if (getpid_cached() == 1 && RUNNING_ON_VALGRIND) { |
3340 | /* Cleanup watchdog_device strings for valgrind. We need them | |
3341 | * in become_shutdown() so normally we cannot free them yet. */ | |
3342 | watchdog_free_device(); | |
7d9eea2b | 3343 | reset_arguments(); |
27fe58b7 | 3344 | return retval; |
8a2c1fbf | 3345 | } |
54b434b1 LP |
3346 | #endif |
3347 | ||
7e11a95e | 3348 | #if HAS_FEATURE_ADDRESS_SANITIZER |
ae5ce7e3 FS |
3349 | /* At this stage we most likely don't have stdio/stderr open, so the following |
3350 | * LSan check would not print any actionable information and would just crash | |
3351 | * PID 1. To make this a bit more helpful, let's try to open /dev/console, | |
3352 | * and if we succeed redirect LSan's report there. */ | |
7b19bd60 FS |
3353 | if (getpid_cached() == 1) { |
3354 | _cleanup_close_ int tty_fd = -EBADF; | |
ae5ce7e3 | 3355 | |
7b19bd60 FS |
3356 | tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC); |
3357 | if (tty_fd >= 0) | |
3358 | __sanitizer_set_report_fd((void*) (intptr_t) tty_fd); | |
ae5ce7e3 | 3359 | |
7b19bd60 FS |
3360 | __lsan_do_leak_check(); |
3361 | } | |
7e11a95e EV |
3362 | #endif |
3363 | ||
88eec29d | 3364 | if (r < 0) |
fb44dc64 LP |
3365 | (void) sd_notifyf(/* unset_environment= */ false, |
3366 | "ERRNO=%i", -r); | |
88eec29d | 3367 | |
5409c6fc ZJS |
3368 | /* Try to invoke the shutdown binary unless we already failed. |
3369 | * If we failed above, we want to freeze after finishing cleanup. */ | |
4870133b LP |
3370 | if (arg_runtime_scope == RUNTIME_SCOPE_SYSTEM && |
3371 | IN_SET(r, MANAGER_EXIT, MANAGER_REBOOT, MANAGER_POWEROFF, MANAGER_HALT, MANAGER_KEXEC)) { | |
b22d392d | 3372 | r = become_shutdown(r, retval); |
4a36297c | 3373 | log_error_errno(r, "Failed to execute shutdown binary, %s: %m", getpid_cached() == 1 ? "freezing" : "quitting"); |
9b9881d7 | 3374 | error_message = "Failed to execute shutdown binary"; |
b9080b03 FF |
3375 | } |
3376 | ||
3a89cb84 DDM |
3377 | /* This is primarily useful when running systemd in a VM, as it provides the user running the VM with |
3378 | * a mechanism to pick up systemd's exit status in the VM. */ | |
fb44dc64 LP |
3379 | (void) sd_notifyf(/* unset_environment= */ false, |
3380 | "EXIT_STATUS=%i", retval); | |
3a89cb84 | 3381 | |
8a2c1fbf EJ |
3382 | watchdog_free_device(); |
3383 | arg_watchdog_device = mfree(arg_watchdog_device); | |
3384 | ||
df0ff127 | 3385 | if (getpid_cached() == 1) { |
cb6531be ZJS |
3386 | if (error_message) |
3387 | manager_status_printf(NULL, STATUS_TYPE_EMERGENCY, | |
1fc464f6 | 3388 | ANSI_HIGHLIGHT_RED "!!!!!!" ANSI_NORMAL, |
bb259772 LP |
3389 | "%s.", error_message); |
3390 | freeze_or_exit_or_reboot(); | |
cb6531be | 3391 | } |
c3b3c274 | 3392 | |
7d9eea2b | 3393 | reset_arguments(); |
60918275 LP |
3394 | return retval; |
3395 | } |