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Merge pull request #26271 from d-hatayama/fix_sulogin_shell
[thirdparty/systemd.git] / src / run / run.c
1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
2
3 #include <getopt.h>
4 #include <stdio.h>
5 #include <fcntl.h>
6 #include <sys/stat.h>
7 #include <sys/types.h>
8
9 #include "sd-bus.h"
10 #include "sd-event.h"
11
12 #include "alloc-util.h"
13 #include "build.h"
14 #include "bus-error.h"
15 #include "bus-locator.h"
16 #include "bus-map-properties.h"
17 #include "bus-unit-util.h"
18 #include "bus-wait-for-jobs.h"
19 #include "calendarspec.h"
20 #include "env-util.h"
21 #include "exit-status.h"
22 #include "fd-util.h"
23 #include "format-util.h"
24 #include "main-func.h"
25 #include "parse-argument.h"
26 #include "parse-util.h"
27 #include "path-util.h"
28 #include "pretty-print.h"
29 #include "process-util.h"
30 #include "ptyfwd.h"
31 #include "signal-util.h"
32 #include "spawn-polkit-agent.h"
33 #include "strv.h"
34 #include "terminal-util.h"
35 #include "unit-def.h"
36 #include "unit-name.h"
37 #include "user-util.h"
38
39 static bool arg_ask_password = true;
40 static bool arg_scope = false;
41 static bool arg_remain_after_exit = false;
42 static bool arg_no_block = false;
43 static bool arg_wait = false;
44 static const char *arg_unit = NULL;
45 static const char *arg_description = NULL;
46 static const char *arg_slice = NULL;
47 static bool arg_slice_inherit = false;
48 static bool arg_send_sighup = false;
49 static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
50 static const char *arg_host = NULL;
51 static bool arg_user = false;
52 static const char *arg_service_type = NULL;
53 static const char *arg_exec_user = NULL;
54 static const char *arg_exec_group = NULL;
55 static int arg_nice = 0;
56 static bool arg_nice_set = false;
57 static char **arg_environment = NULL;
58 static char **arg_property = NULL;
59 static enum {
60 ARG_STDIO_NONE, /* The default, as it is for normal services, stdin connected to /dev/null, and stdout+stderr to the journal */
61 ARG_STDIO_PTY, /* Interactive behaviour, requested by --pty: we allocate a pty and connect it to the TTY we are invoked from */
62 ARG_STDIO_DIRECT, /* Directly pass our stdin/stdout/stderr to the activated service, useful for usage in shell pipelines, requested by --pipe */
63 ARG_STDIO_AUTO, /* If --pipe and --pty are used together we use --pty when invoked on a TTY, and --pipe otherwise */
64 } arg_stdio = ARG_STDIO_NONE;
65 static char **arg_path_property = NULL;
66 static char **arg_socket_property = NULL;
67 static char **arg_timer_property = NULL;
68 static bool arg_with_timer = false;
69 static bool arg_quiet = false;
70 static bool arg_aggressive_gc = false;
71 static char *arg_working_directory = NULL;
72 static bool arg_shell = false;
73 static char **arg_cmdline = NULL;
74
75 STATIC_DESTRUCTOR_REGISTER(arg_environment, strv_freep);
76 STATIC_DESTRUCTOR_REGISTER(arg_property, strv_freep);
77 STATIC_DESTRUCTOR_REGISTER(arg_path_property, strv_freep);
78 STATIC_DESTRUCTOR_REGISTER(arg_socket_property, strv_freep);
79 STATIC_DESTRUCTOR_REGISTER(arg_timer_property, strv_freep);
80 STATIC_DESTRUCTOR_REGISTER(arg_working_directory, freep);
81 STATIC_DESTRUCTOR_REGISTER(arg_cmdline, strv_freep);
82
83 static int help(void) {
84 _cleanup_free_ char *link = NULL;
85 int r;
86
87 r = terminal_urlify_man("systemd-run", "1", &link);
88 if (r < 0)
89 return log_oom();
90
91 printf("%s [OPTIONS...] COMMAND [ARGUMENTS...]\n"
92 "\n%sRun the specified command in a transient scope or service.%s\n\n"
93 " -h --help Show this help\n"
94 " --version Show package version\n"
95 " --no-ask-password Do not prompt for password\n"
96 " --user Run as user unit\n"
97 " -H --host=[USER@]HOST Operate on remote host\n"
98 " -M --machine=CONTAINER Operate on local container\n"
99 " --scope Run this as scope rather than service\n"
100 " -u --unit=UNIT Run under the specified unit name\n"
101 " -p --property=NAME=VALUE Set service or scope unit property\n"
102 " --description=TEXT Description for unit\n"
103 " --slice=SLICE Run in the specified slice\n"
104 " --slice-inherit Inherit the slice\n"
105 " --no-block Do not wait until operation finished\n"
106 " -r --remain-after-exit Leave service around until explicitly stopped\n"
107 " --wait Wait until service stopped again\n"
108 " --send-sighup Send SIGHUP when terminating\n"
109 " --service-type=TYPE Service type\n"
110 " --uid=USER Run as system user\n"
111 " --gid=GROUP Run as system group\n"
112 " --nice=NICE Nice level\n"
113 " --working-directory=PATH Set working directory\n"
114 " -d --same-dir Inherit working directory from caller\n"
115 " -E --setenv=NAME[=VALUE] Set environment variable\n"
116 " -t --pty Run service on pseudo TTY as STDIN/STDOUT/\n"
117 " STDERR\n"
118 " -P --pipe Pass STDIN/STDOUT/STDERR directly to service\n"
119 " -q --quiet Suppress information messages during runtime\n"
120 " -G --collect Unload unit after it ran, even when failed\n"
121 " -S --shell Invoke a $SHELL interactively\n\n"
122 "Path options:\n"
123 " --path-property=NAME=VALUE Set path unit property\n\n"
124 "Socket options:\n"
125 " --socket-property=NAME=VALUE Set socket unit property\n\n"
126 "Timer options:\n"
127 " --on-active=SECONDS Run after SECONDS delay\n"
128 " --on-boot=SECONDS Run SECONDS after machine was booted up\n"
129 " --on-startup=SECONDS Run SECONDS after systemd activation\n"
130 " --on-unit-active=SECONDS Run SECONDS after the last activation\n"
131 " --on-unit-inactive=SECONDS Run SECONDS after the last deactivation\n"
132 " --on-calendar=SPEC Realtime timer\n"
133 " --on-timezone-change Run when the timezone changes\n"
134 " --on-clock-change Run when the realtime clock jumps\n"
135 " --timer-property=NAME=VALUE Set timer unit property\n"
136 "\nSee the %s for details.\n",
137 program_invocation_short_name,
138 ansi_highlight(),
139 ansi_normal(),
140 link);
141
142 return 0;
143 }
144
145 static int add_timer_property(const char *name, const char *val) {
146 char *p;
147
148 assert(name);
149 assert(val);
150
151 p = strjoin(name, "=", val);
152 if (!p)
153 return log_oom();
154
155 if (strv_consume(&arg_timer_property, p) < 0)
156 return log_oom();
157
158 return 0;
159 }
160
161 static int parse_argv(int argc, char *argv[]) {
162
163 enum {
164 ARG_VERSION = 0x100,
165 ARG_USER,
166 ARG_SYSTEM,
167 ARG_SCOPE,
168 ARG_DESCRIPTION,
169 ARG_SLICE,
170 ARG_SLICE_INHERIT,
171 ARG_SEND_SIGHUP,
172 ARG_SERVICE_TYPE,
173 ARG_EXEC_USER,
174 ARG_EXEC_GROUP,
175 ARG_NICE,
176 ARG_ON_ACTIVE,
177 ARG_ON_BOOT,
178 ARG_ON_STARTUP,
179 ARG_ON_UNIT_ACTIVE,
180 ARG_ON_UNIT_INACTIVE,
181 ARG_ON_CALENDAR,
182 ARG_ON_TIMEZONE_CHANGE,
183 ARG_ON_CLOCK_CHANGE,
184 ARG_TIMER_PROPERTY,
185 ARG_PATH_PROPERTY,
186 ARG_SOCKET_PROPERTY,
187 ARG_NO_BLOCK,
188 ARG_NO_ASK_PASSWORD,
189 ARG_WAIT,
190 ARG_WORKING_DIRECTORY,
191 ARG_SHELL,
192 };
193
194 static const struct option options[] = {
195 { "help", no_argument, NULL, 'h' },
196 { "version", no_argument, NULL, ARG_VERSION },
197 { "user", no_argument, NULL, ARG_USER },
198 { "system", no_argument, NULL, ARG_SYSTEM },
199 { "scope", no_argument, NULL, ARG_SCOPE },
200 { "unit", required_argument, NULL, 'u' },
201 { "description", required_argument, NULL, ARG_DESCRIPTION },
202 { "slice", required_argument, NULL, ARG_SLICE },
203 { "slice-inherit", no_argument, NULL, ARG_SLICE_INHERIT },
204 { "remain-after-exit", no_argument, NULL, 'r' },
205 { "send-sighup", no_argument, NULL, ARG_SEND_SIGHUP },
206 { "host", required_argument, NULL, 'H' },
207 { "machine", required_argument, NULL, 'M' },
208 { "service-type", required_argument, NULL, ARG_SERVICE_TYPE },
209 { "wait", no_argument, NULL, ARG_WAIT },
210 { "uid", required_argument, NULL, ARG_EXEC_USER },
211 { "gid", required_argument, NULL, ARG_EXEC_GROUP },
212 { "nice", required_argument, NULL, ARG_NICE },
213 { "setenv", required_argument, NULL, 'E' },
214 { "property", required_argument, NULL, 'p' },
215 { "tty", no_argument, NULL, 't' }, /* deprecated alias */
216 { "pty", no_argument, NULL, 't' },
217 { "pipe", no_argument, NULL, 'P' },
218 { "quiet", no_argument, NULL, 'q' },
219 { "on-active", required_argument, NULL, ARG_ON_ACTIVE },
220 { "on-boot", required_argument, NULL, ARG_ON_BOOT },
221 { "on-startup", required_argument, NULL, ARG_ON_STARTUP },
222 { "on-unit-active", required_argument, NULL, ARG_ON_UNIT_ACTIVE },
223 { "on-unit-inactive", required_argument, NULL, ARG_ON_UNIT_INACTIVE },
224 { "on-calendar", required_argument, NULL, ARG_ON_CALENDAR },
225 { "on-timezone-change",no_argument, NULL, ARG_ON_TIMEZONE_CHANGE},
226 { "on-clock-change", no_argument, NULL, ARG_ON_CLOCK_CHANGE },
227 { "timer-property", required_argument, NULL, ARG_TIMER_PROPERTY },
228 { "path-property", required_argument, NULL, ARG_PATH_PROPERTY },
229 { "socket-property", required_argument, NULL, ARG_SOCKET_PROPERTY },
230 { "no-block", no_argument, NULL, ARG_NO_BLOCK },
231 { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD },
232 { "collect", no_argument, NULL, 'G' },
233 { "working-directory", required_argument, NULL, ARG_WORKING_DIRECTORY },
234 { "same-dir", no_argument, NULL, 'd' },
235 { "shell", no_argument, NULL, 'S' },
236 {},
237 };
238
239 bool with_trigger = false;
240 int r, c;
241
242 assert(argc >= 0);
243 assert(argv);
244
245 while ((c = getopt_long(argc, argv, "+hrH:M:E:p:tPqGdSu:", options, NULL)) >= 0)
246
247 switch (c) {
248
249 case 'h':
250 return help();
251
252 case ARG_VERSION:
253 return version();
254
255 case ARG_NO_ASK_PASSWORD:
256 arg_ask_password = false;
257 break;
258
259 case ARG_USER:
260 arg_user = true;
261 break;
262
263 case ARG_SYSTEM:
264 arg_user = false;
265 break;
266
267 case ARG_SCOPE:
268 arg_scope = true;
269 break;
270
271 case 'u':
272 arg_unit = optarg;
273 break;
274
275 case ARG_DESCRIPTION:
276 arg_description = optarg;
277 break;
278
279 case ARG_SLICE:
280 arg_slice = optarg;
281 break;
282
283 case ARG_SLICE_INHERIT:
284 arg_slice_inherit = true;
285 break;
286
287 case ARG_SEND_SIGHUP:
288 arg_send_sighup = true;
289 break;
290
291 case 'r':
292 arg_remain_after_exit = true;
293 break;
294
295 case 'H':
296 arg_transport = BUS_TRANSPORT_REMOTE;
297 arg_host = optarg;
298 break;
299
300 case 'M':
301 arg_transport = BUS_TRANSPORT_MACHINE;
302 arg_host = optarg;
303 break;
304
305 case ARG_SERVICE_TYPE:
306 arg_service_type = optarg;
307 break;
308
309 case ARG_EXEC_USER:
310 arg_exec_user = optarg;
311 break;
312
313 case ARG_EXEC_GROUP:
314 arg_exec_group = optarg;
315 break;
316
317 case ARG_NICE:
318 r = parse_nice(optarg, &arg_nice);
319 if (r < 0)
320 return log_error_errno(r, "Failed to parse nice value: %s", optarg);
321
322 arg_nice_set = true;
323 break;
324
325 case 'E':
326 r = strv_env_replace_strdup_passthrough(&arg_environment, optarg);
327 if (r < 0)
328 return log_error_errno(r, "Cannot assign environment variable %s: %m", optarg);
329
330 break;
331
332 case 'p':
333 if (strv_extend(&arg_property, optarg) < 0)
334 return log_oom();
335
336 break;
337
338 case 't': /* --pty */
339 if (IN_SET(arg_stdio, ARG_STDIO_DIRECT, ARG_STDIO_AUTO)) /* if --pipe is already used, upgrade to auto mode */
340 arg_stdio = ARG_STDIO_AUTO;
341 else
342 arg_stdio = ARG_STDIO_PTY;
343 break;
344
345 case 'P': /* --pipe */
346 if (IN_SET(arg_stdio, ARG_STDIO_PTY, ARG_STDIO_AUTO)) /* If --pty is already used, upgrade to auto mode */
347 arg_stdio = ARG_STDIO_AUTO;
348 else
349 arg_stdio = ARG_STDIO_DIRECT;
350 break;
351
352 case 'q':
353 arg_quiet = true;
354 break;
355
356 case ARG_ON_ACTIVE:
357 r = add_timer_property("OnActiveSec", optarg);
358 if (r < 0)
359 return r;
360
361 arg_with_timer = true;
362 break;
363
364 case ARG_ON_BOOT:
365 r = add_timer_property("OnBootSec", optarg);
366 if (r < 0)
367 return r;
368
369 arg_with_timer = true;
370 break;
371
372 case ARG_ON_STARTUP:
373 r = add_timer_property("OnStartupSec", optarg);
374 if (r < 0)
375 return r;
376
377 arg_with_timer = true;
378 break;
379
380 case ARG_ON_UNIT_ACTIVE:
381 r = add_timer_property("OnUnitActiveSec", optarg);
382 if (r < 0)
383 return r;
384
385 arg_with_timer = true;
386 break;
387
388 case ARG_ON_UNIT_INACTIVE:
389 r = add_timer_property("OnUnitInactiveSec", optarg);
390 if (r < 0)
391 return r;
392
393 arg_with_timer = true;
394 break;
395
396 case ARG_ON_CALENDAR: {
397 _cleanup_(calendar_spec_freep) CalendarSpec *cs = NULL;
398
399 r = calendar_spec_from_string(optarg, &cs);
400 if (r < 0)
401 return log_error_errno(r, "Failed to parse calendar event specification: %m");
402
403 /* Let's make sure the given calendar event is not in the past */
404 r = calendar_spec_next_usec(cs, now(CLOCK_REALTIME), NULL);
405 if (r == -ENOENT)
406 /* The calendar event is in the past — let's warn about this, but install it
407 * anyway as is. The service manager will trigger the service right away.
408 * Moreover, the server side might have a different clock or timezone than we
409 * do, hence it should decide when or whether to run something. */
410 log_warning("Specified calendar expression is in the past, proceeding anyway.");
411 else if (r < 0)
412 return log_error_errno(r, "Failed to calculate next time calendar expression elapses: %m");
413
414 r = add_timer_property("OnCalendar", optarg);
415 if (r < 0)
416 return r;
417
418 arg_with_timer = true;
419 break;
420 }
421
422 case ARG_ON_TIMEZONE_CHANGE:
423 r = add_timer_property("OnTimezoneChange", "yes");
424 if (r < 0)
425 return r;
426
427 arg_with_timer = true;
428 break;
429
430 case ARG_ON_CLOCK_CHANGE:
431 r = add_timer_property("OnClockChange", "yes");
432 if (r < 0)
433 return r;
434
435 arg_with_timer = true;
436 break;
437
438 case ARG_TIMER_PROPERTY:
439
440 if (strv_extend(&arg_timer_property, optarg) < 0)
441 return log_oom();
442
443 arg_with_timer = arg_with_timer ||
444 STARTSWITH_SET(optarg,
445 "OnActiveSec=",
446 "OnBootSec=",
447 "OnStartupSec=",
448 "OnUnitActiveSec=",
449 "OnUnitInactiveSec=",
450 "OnCalendar=");
451 break;
452
453 case ARG_PATH_PROPERTY:
454
455 if (strv_extend(&arg_path_property, optarg) < 0)
456 return log_oom();
457
458 break;
459
460 case ARG_SOCKET_PROPERTY:
461
462 if (strv_extend(&arg_socket_property, optarg) < 0)
463 return log_oom();
464
465 break;
466
467 case ARG_NO_BLOCK:
468 arg_no_block = true;
469 break;
470
471 case ARG_WAIT:
472 arg_wait = true;
473 break;
474
475 case ARG_WORKING_DIRECTORY:
476 r = parse_path_argument(optarg, true, &arg_working_directory);
477 if (r < 0)
478 return r;
479
480 break;
481
482 case 'd': {
483 _cleanup_free_ char *p = NULL;
484
485 r = safe_getcwd(&p);
486 if (r < 0)
487 return log_error_errno(r, "Failed to get current working directory: %m");
488
489 if (empty_or_root(p))
490 arg_working_directory = mfree(arg_working_directory);
491 else
492 free_and_replace(arg_working_directory, p);
493 break;
494 }
495
496 case 'G':
497 arg_aggressive_gc = true;
498 break;
499
500 case 'S':
501 arg_shell = true;
502 break;
503
504 case '?':
505 return -EINVAL;
506
507 default:
508 assert_not_reached();
509 }
510
511 /* If we are talking to the per-user instance PolicyKit isn't going to help */
512 if (arg_user)
513 arg_ask_password = false;
514
515 with_trigger = !!arg_path_property || !!arg_socket_property || arg_with_timer;
516
517 /* currently, only single trigger (path, socket, timer) unit can be created simultaneously */
518 if ((int) !!arg_path_property + (int) !!arg_socket_property + (int) arg_with_timer > 1)
519 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
520 "Only single trigger (path, socket, timer) unit can be created.");
521
522 if (arg_shell) {
523 /* If --shell is imply --pty --pipe --same-dir --service-type=exec --wait --collect, unless otherwise
524 * specified. */
525
526 if (!arg_scope) {
527 if (arg_stdio == ARG_STDIO_NONE)
528 arg_stdio = ARG_STDIO_AUTO;
529
530 if (!arg_working_directory) {
531 r = safe_getcwd(&arg_working_directory);
532 if (r < 0)
533 return log_error_errno(r, "Failed to get current working directory: %m");
534 }
535
536 if (!arg_service_type) {
537 arg_service_type = strdup("exec");
538 if (!arg_service_type)
539 return log_oom();
540 }
541
542 arg_wait = true;
543 }
544
545 arg_aggressive_gc = true;
546 }
547
548 if (arg_stdio == ARG_STDIO_AUTO)
549 /* If we both --pty and --pipe are specified we'll automatically pick --pty if we are connected fully
550 * to a TTY and pick direct fd passing otherwise. This way, we automatically adapt to usage in a shell
551 * pipeline, but we are neatly interactive with tty-level isolation otherwise. */
552 arg_stdio = isatty(STDIN_FILENO) && isatty(STDOUT_FILENO) && isatty(STDERR_FILENO) ?
553 ARG_STDIO_PTY :
554 ARG_STDIO_DIRECT;
555
556 if (argc > optind) {
557 char **l;
558
559 if (arg_shell)
560 return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "If --shell is used, no command line is expected.");
561
562 l = strv_copy(argv + optind);
563 if (!l)
564 return log_oom();
565
566 strv_free_and_replace(arg_cmdline, l);
567
568 } else if (arg_shell) {
569 _cleanup_free_ char *s = NULL;
570 char **l;
571
572 r = get_shell(&s);
573 if (r < 0)
574 return log_error_errno(r, "Failed to determine shell: %m");
575
576 l = strv_new(s);
577 if (!l)
578 return log_oom();
579
580 strv_free_and_replace(arg_cmdline, l);
581
582 } else if (!arg_unit || !with_trigger)
583 return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Command line to execute required.");
584
585 if (arg_user && arg_transport == BUS_TRANSPORT_REMOTE)
586 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
587 "Execution in user context is not supported on remote systems.");
588
589 if (arg_scope && arg_transport == BUS_TRANSPORT_REMOTE)
590 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
591 "Scope execution is not supported on remote systems.");
592
593 if (arg_scope && (arg_remain_after_exit || arg_service_type))
594 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
595 "--remain-after-exit and --service-type= are not supported in --scope mode.");
596
597 if (arg_stdio != ARG_STDIO_NONE && (with_trigger || arg_scope))
598 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
599 "--pty/--pipe is not compatible in timer or --scope mode.");
600
601 if (arg_stdio != ARG_STDIO_NONE && arg_transport == BUS_TRANSPORT_REMOTE)
602 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
603 "--pty/--pipe is only supported when connecting to the local system or containers.");
604
605 if (arg_stdio != ARG_STDIO_NONE && arg_no_block)
606 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
607 "--pty/--pipe is not compatible with --no-block.");
608
609 if (arg_scope && with_trigger)
610 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
611 "Path, socket or timer options are not supported in --scope mode.");
612
613 if (arg_timer_property && !arg_with_timer)
614 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
615 "--timer-property= has no effect without any other timer options.");
616
617 if (arg_wait) {
618 if (arg_no_block)
619 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
620 "--wait may not be combined with --no-block.");
621
622 if (with_trigger)
623 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
624 "--wait may not be combined with path, socket or timer operations.");
625
626 if (arg_scope)
627 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
628 "--wait may not be combined with --scope.");
629 }
630
631 return 1;
632 }
633
634 static int transient_unit_set_properties(sd_bus_message *m, UnitType t, char **properties) {
635 int r;
636
637 r = sd_bus_message_append(m, "(sv)", "Description", "s", arg_description);
638 if (r < 0)
639 return bus_log_create_error(r);
640
641 if (arg_aggressive_gc) {
642 r = sd_bus_message_append(m, "(sv)", "CollectMode", "s", "inactive-or-failed");
643 if (r < 0)
644 return bus_log_create_error(r);
645 }
646
647 return bus_append_unit_property_assignment_many(m, t, properties);
648 }
649
650 static int transient_cgroup_set_properties(sd_bus_message *m) {
651 _cleanup_free_ char *name = NULL;
652 _cleanup_free_ char *slice = NULL;
653 int r;
654 assert(m);
655
656 if (arg_slice_inherit) {
657 char *end;
658
659 if (arg_user)
660 r = cg_pid_get_user_slice(0, &name);
661 else
662 r = cg_pid_get_slice(0, &name);
663 if (r < 0)
664 return log_error_errno(r, "Failed to get PID slice: %m");
665
666 end = endswith(name, ".slice");
667 if (!end)
668 return -ENXIO;
669 *end = 0;
670 }
671
672 if (!isempty(arg_slice) && !strextend_with_separator(&name, "-", arg_slice))
673 return log_oom();
674
675 if (!name)
676 return 0;
677
678 r = unit_name_mangle_with_suffix(name, "as slice",
679 arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN,
680 ".slice", &slice);
681 if (r < 0)
682 return log_error_errno(r, "Failed to mangle name '%s': %m", arg_slice);
683
684 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
685 if (r < 0)
686 return bus_log_create_error(r);
687
688 return 0;
689 }
690
691 static int transient_kill_set_properties(sd_bus_message *m) {
692 int r;
693
694 assert(m);
695
696 if (arg_send_sighup) {
697 r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", arg_send_sighup);
698 if (r < 0)
699 return bus_log_create_error(r);
700 }
701
702 return 0;
703 }
704
705 static int transient_service_set_properties(sd_bus_message *m, const char *pty_path) {
706 bool send_term = false;
707 int r;
708
709 assert(m);
710
711 r = transient_unit_set_properties(m, UNIT_SERVICE, arg_property);
712 if (r < 0)
713 return r;
714
715 r = transient_kill_set_properties(m);
716 if (r < 0)
717 return r;
718
719 r = transient_cgroup_set_properties(m);
720 if (r < 0)
721 return r;
722
723 if (arg_wait || arg_stdio != ARG_STDIO_NONE) {
724 r = sd_bus_message_append(m, "(sv)", "AddRef", "b", 1);
725 if (r < 0)
726 return bus_log_create_error(r);
727 }
728
729 if (arg_remain_after_exit) {
730 r = sd_bus_message_append(m, "(sv)", "RemainAfterExit", "b", arg_remain_after_exit);
731 if (r < 0)
732 return bus_log_create_error(r);
733 }
734
735 if (arg_service_type) {
736 r = sd_bus_message_append(m, "(sv)", "Type", "s", arg_service_type);
737 if (r < 0)
738 return bus_log_create_error(r);
739 }
740
741 if (arg_exec_user) {
742 r = sd_bus_message_append(m, "(sv)", "User", "s", arg_exec_user);
743 if (r < 0)
744 return bus_log_create_error(r);
745 }
746
747 if (arg_exec_group) {
748 r = sd_bus_message_append(m, "(sv)", "Group", "s", arg_exec_group);
749 if (r < 0)
750 return bus_log_create_error(r);
751 }
752
753 if (arg_nice_set) {
754 r = sd_bus_message_append(m, "(sv)", "Nice", "i", arg_nice);
755 if (r < 0)
756 return bus_log_create_error(r);
757 }
758
759 if (arg_working_directory) {
760 r = sd_bus_message_append(m, "(sv)", "WorkingDirectory", "s", arg_working_directory);
761 if (r < 0)
762 return bus_log_create_error(r);
763 }
764
765 if (pty_path) {
766 r = sd_bus_message_append(m,
767 "(sv)(sv)(sv)(sv)",
768 "StandardInput", "s", "tty",
769 "StandardOutput", "s", "tty",
770 "StandardError", "s", "tty",
771 "TTYPath", "s", pty_path);
772 if (r < 0)
773 return bus_log_create_error(r);
774
775 send_term = true;
776
777 } else if (arg_stdio == ARG_STDIO_DIRECT) {
778 r = sd_bus_message_append(m,
779 "(sv)(sv)(sv)",
780 "StandardInputFileDescriptor", "h", STDIN_FILENO,
781 "StandardOutputFileDescriptor", "h", STDOUT_FILENO,
782 "StandardErrorFileDescriptor", "h", STDERR_FILENO);
783 if (r < 0)
784 return bus_log_create_error(r);
785
786 send_term = isatty(STDIN_FILENO) || isatty(STDOUT_FILENO) || isatty(STDERR_FILENO);
787 }
788
789 if (send_term) {
790 const char *e;
791
792 e = getenv("TERM");
793 if (e) {
794 _cleanup_free_ char *n = NULL;
795
796 n = strjoin("TERM=", e);
797 if (!n)
798 return log_oom();
799
800 r = sd_bus_message_append(m,
801 "(sv)",
802 "Environment", "as", 1, n);
803 if (r < 0)
804 return bus_log_create_error(r);
805 }
806 }
807
808 if (!strv_isempty(arg_environment)) {
809 r = sd_bus_message_open_container(m, 'r', "sv");
810 if (r < 0)
811 return bus_log_create_error(r);
812
813 r = sd_bus_message_append(m, "s", "Environment");
814 if (r < 0)
815 return bus_log_create_error(r);
816
817 r = sd_bus_message_open_container(m, 'v', "as");
818 if (r < 0)
819 return bus_log_create_error(r);
820
821 r = sd_bus_message_append_strv(m, arg_environment);
822 if (r < 0)
823 return bus_log_create_error(r);
824
825 r = sd_bus_message_close_container(m);
826 if (r < 0)
827 return bus_log_create_error(r);
828
829 r = sd_bus_message_close_container(m);
830 if (r < 0)
831 return bus_log_create_error(r);
832 }
833
834 /* Exec container */
835 if (!strv_isempty(arg_cmdline)) {
836 r = sd_bus_message_open_container(m, 'r', "sv");
837 if (r < 0)
838 return bus_log_create_error(r);
839
840 r = sd_bus_message_append(m, "s", "ExecStart");
841 if (r < 0)
842 return bus_log_create_error(r);
843
844 r = sd_bus_message_open_container(m, 'v', "a(sasb)");
845 if (r < 0)
846 return bus_log_create_error(r);
847
848 r = sd_bus_message_open_container(m, 'a', "(sasb)");
849 if (r < 0)
850 return bus_log_create_error(r);
851
852 r = sd_bus_message_open_container(m, 'r', "sasb");
853 if (r < 0)
854 return bus_log_create_error(r);
855
856 r = sd_bus_message_append(m, "s", arg_cmdline[0]);
857 if (r < 0)
858 return bus_log_create_error(r);
859
860 r = sd_bus_message_append_strv(m, arg_cmdline);
861 if (r < 0)
862 return bus_log_create_error(r);
863
864 r = sd_bus_message_append(m, "b", false);
865 if (r < 0)
866 return bus_log_create_error(r);
867
868 r = sd_bus_message_close_container(m);
869 if (r < 0)
870 return bus_log_create_error(r);
871
872 r = sd_bus_message_close_container(m);
873 if (r < 0)
874 return bus_log_create_error(r);
875
876 r = sd_bus_message_close_container(m);
877 if (r < 0)
878 return bus_log_create_error(r);
879
880 r = sd_bus_message_close_container(m);
881 if (r < 0)
882 return bus_log_create_error(r);
883 }
884
885 return 0;
886 }
887
888 static int transient_scope_set_properties(sd_bus_message *m) {
889 int r;
890
891 assert(m);
892
893 r = transient_unit_set_properties(m, UNIT_SCOPE, arg_property);
894 if (r < 0)
895 return r;
896
897 r = transient_kill_set_properties(m);
898 if (r < 0)
899 return r;
900
901 r = transient_cgroup_set_properties(m);
902 if (r < 0)
903 return r;
904
905 r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, (uint32_t) getpid_cached());
906 if (r < 0)
907 return bus_log_create_error(r);
908
909 return 0;
910 }
911
912 static int transient_timer_set_properties(sd_bus_message *m) {
913 int r;
914
915 assert(m);
916
917 r = transient_unit_set_properties(m, UNIT_TIMER, arg_timer_property);
918 if (r < 0)
919 return r;
920
921 /* Automatically clean up our transient timers */
922 r = sd_bus_message_append(m, "(sv)", "RemainAfterElapse", "b", false);
923 if (r < 0)
924 return bus_log_create_error(r);
925
926 return 0;
927 }
928
929 static int make_unit_name(sd_bus *bus, UnitType t, char **ret) {
930 const char *unique, *id;
931 char *p;
932 int r;
933
934 assert(bus);
935 assert(t >= 0);
936 assert(t < _UNIT_TYPE_MAX);
937
938 r = sd_bus_get_unique_name(bus, &unique);
939 if (r < 0) {
940 sd_id128_t rnd;
941
942 /* We couldn't get the unique name, which is a pretty
943 * common case if we are connected to systemd
944 * directly. In that case, just pick a random uuid as
945 * name */
946
947 r = sd_id128_randomize(&rnd);
948 if (r < 0)
949 return log_error_errno(r, "Failed to generate random run unit name: %m");
950
951 if (asprintf(ret, "run-r" SD_ID128_FORMAT_STR ".%s", SD_ID128_FORMAT_VAL(rnd), unit_type_to_string(t)) < 0)
952 return log_oom();
953
954 return 0;
955 }
956
957 /* We managed to get the unique name, then let's use that to name our transient units. */
958
959 id = startswith(unique, ":1."); /* let' strip the usual prefix */
960 if (!id)
961 id = startswith(unique, ":"); /* the spec only requires things to start with a colon, hence
962 * let's add a generic fallback for that. */
963 if (!id)
964 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
965 "Unique name %s has unexpected format.",
966 unique);
967
968 p = strjoin("run-u", id, ".", unit_type_to_string(t));
969 if (!p)
970 return log_oom();
971
972 *ret = p;
973 return 0;
974 }
975
976 typedef struct RunContext {
977 sd_bus *bus;
978 sd_event *event;
979 PTYForward *forward;
980 sd_bus_slot *match;
981
982 /* Current state of the unit */
983 char *active_state;
984 bool has_job;
985
986 /* The exit data of the unit */
987 uint64_t inactive_exit_usec;
988 uint64_t inactive_enter_usec;
989 char *result;
990 uint64_t cpu_usage_nsec;
991 uint64_t ip_ingress_bytes;
992 uint64_t ip_egress_bytes;
993 uint64_t io_read_bytes;
994 uint64_t io_write_bytes;
995 uint32_t exit_code;
996 uint32_t exit_status;
997 } RunContext;
998
999 static void run_context_free(RunContext *c) {
1000 assert(c);
1001
1002 c->forward = pty_forward_free(c->forward);
1003 c->match = sd_bus_slot_unref(c->match);
1004 c->bus = sd_bus_unref(c->bus);
1005 c->event = sd_event_unref(c->event);
1006
1007 free(c->active_state);
1008 free(c->result);
1009 }
1010
1011 static void run_context_check_done(RunContext *c) {
1012 bool done;
1013
1014 assert(c);
1015
1016 if (c->match)
1017 done = STRPTR_IN_SET(c->active_state, "inactive", "failed") && !c->has_job;
1018 else
1019 done = true;
1020
1021 if (c->forward && done) /* If the service is gone, it's time to drain the output */
1022 done = pty_forward_drain(c->forward);
1023
1024 if (done)
1025 sd_event_exit(c->event, EXIT_SUCCESS);
1026 }
1027
1028 static int map_job(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
1029 bool *b = userdata;
1030 const char *job;
1031 uint32_t id;
1032 int r;
1033
1034 r = sd_bus_message_read(m, "(uo)", &id, &job);
1035 if (r < 0)
1036 return r;
1037
1038 *b = id != 0 || !streq(job, "/");
1039 return 0;
1040 }
1041
1042 static int run_context_update(RunContext *c, const char *path) {
1043
1044 static const struct bus_properties_map map[] = {
1045 { "ActiveState", "s", NULL, offsetof(RunContext, active_state) },
1046 { "InactiveExitTimestampMonotonic", "t", NULL, offsetof(RunContext, inactive_exit_usec) },
1047 { "InactiveEnterTimestampMonotonic", "t", NULL, offsetof(RunContext, inactive_enter_usec) },
1048 { "Result", "s", NULL, offsetof(RunContext, result) },
1049 { "ExecMainCode", "i", NULL, offsetof(RunContext, exit_code) },
1050 { "ExecMainStatus", "i", NULL, offsetof(RunContext, exit_status) },
1051 { "CPUUsageNSec", "t", NULL, offsetof(RunContext, cpu_usage_nsec) },
1052 { "IPIngressBytes", "t", NULL, offsetof(RunContext, ip_ingress_bytes) },
1053 { "IPEgressBytes", "t", NULL, offsetof(RunContext, ip_egress_bytes) },
1054 { "IOReadBytes", "t", NULL, offsetof(RunContext, io_read_bytes) },
1055 { "IOWriteBytes", "t", NULL, offsetof(RunContext, io_write_bytes) },
1056 { "Job", "(uo)", map_job, offsetof(RunContext, has_job) },
1057 {}
1058 };
1059
1060 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1061 int r;
1062
1063 r = bus_map_all_properties(c->bus,
1064 "org.freedesktop.systemd1",
1065 path,
1066 map,
1067 BUS_MAP_STRDUP,
1068 &error,
1069 NULL,
1070 c);
1071 if (r < 0) {
1072 sd_event_exit(c->event, EXIT_FAILURE);
1073 return log_error_errno(r, "Failed to query unit state: %s", bus_error_message(&error, r));
1074 }
1075
1076 run_context_check_done(c);
1077 return 0;
1078 }
1079
1080 static int on_properties_changed(sd_bus_message *m, void *userdata, sd_bus_error *error) {
1081 RunContext *c = ASSERT_PTR(userdata);
1082
1083 assert(m);
1084
1085 return run_context_update(c, sd_bus_message_get_path(m));
1086 }
1087
1088 static int pty_forward_handler(PTYForward *f, int rcode, void *userdata) {
1089 RunContext *c = userdata;
1090
1091 assert(f);
1092
1093 if (rcode < 0) {
1094 sd_event_exit(c->event, EXIT_FAILURE);
1095 return log_error_errno(rcode, "Error on PTY forwarding logic: %m");
1096 }
1097
1098 run_context_check_done(c);
1099 return 0;
1100 }
1101
1102 static int start_transient_service(
1103 sd_bus *bus,
1104 int *retval) {
1105
1106 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
1107 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1108 _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL;
1109 _cleanup_free_ char *service = NULL, *pty_path = NULL;
1110 _cleanup_close_ int master = -EBADF;
1111 int r;
1112
1113 assert(bus);
1114 assert(retval);
1115
1116 if (arg_stdio == ARG_STDIO_PTY) {
1117
1118 if (arg_transport == BUS_TRANSPORT_LOCAL) {
1119 master = posix_openpt(O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
1120 if (master < 0)
1121 return log_error_errno(errno, "Failed to acquire pseudo tty: %m");
1122
1123 r = ptsname_malloc(master, &pty_path);
1124 if (r < 0)
1125 return log_error_errno(r, "Failed to determine tty name: %m");
1126
1127 if (unlockpt(master) < 0)
1128 return log_error_errno(errno, "Failed to unlock tty: %m");
1129
1130 } else if (arg_transport == BUS_TRANSPORT_MACHINE) {
1131 _cleanup_(sd_bus_unrefp) sd_bus *system_bus = NULL;
1132 _cleanup_(sd_bus_message_unrefp) sd_bus_message *pty_reply = NULL;
1133 const char *s;
1134
1135 r = sd_bus_default_system(&system_bus);
1136 if (r < 0)
1137 return log_error_errno(r, "Failed to connect to system bus: %m");
1138
1139 r = sd_bus_call_method(system_bus,
1140 "org.freedesktop.machine1",
1141 "/org/freedesktop/machine1",
1142 "org.freedesktop.machine1.Manager",
1143 "OpenMachinePTY",
1144 &error,
1145 &pty_reply,
1146 "s", arg_host);
1147 if (r < 0)
1148 return log_error_errno(r, "Failed to get machine PTY: %s", bus_error_message(&error, r));
1149
1150 r = sd_bus_message_read(pty_reply, "hs", &master, &s);
1151 if (r < 0)
1152 return bus_log_parse_error(r);
1153
1154 master = fcntl(master, F_DUPFD_CLOEXEC, 3);
1155 if (master < 0)
1156 return log_error_errno(errno, "Failed to duplicate master fd: %m");
1157
1158 pty_path = strdup(s);
1159 if (!pty_path)
1160 return log_oom();
1161 } else
1162 assert_not_reached();
1163 }
1164
1165 /* Optionally, wait for the start job to complete. If we are supposed to read the service's stdin
1166 * lets skip this however, because we should start that already when the start job is running, and
1167 * there's little point in waiting for the start job to complete in that case anyway, as we'll wait
1168 * for EOF anyway, which is going to be much later. */
1169 if (!arg_no_block && arg_stdio == ARG_STDIO_NONE) {
1170 r = bus_wait_for_jobs_new(bus, &w);
1171 if (r < 0)
1172 return log_error_errno(r, "Could not watch jobs: %m");
1173 }
1174
1175 if (arg_unit) {
1176 r = unit_name_mangle_with_suffix(arg_unit, "as unit",
1177 arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN,
1178 ".service", &service);
1179 if (r < 0)
1180 return log_error_errno(r, "Failed to mangle unit name: %m");
1181 } else {
1182 r = make_unit_name(bus, UNIT_SERVICE, &service);
1183 if (r < 0)
1184 return r;
1185 }
1186
1187 r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, "StartTransientUnit");
1188 if (r < 0)
1189 return bus_log_create_error(r);
1190
1191 r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
1192 if (r < 0)
1193 return bus_log_create_error(r);
1194
1195 /* Name and mode */
1196 r = sd_bus_message_append(m, "ss", service, "fail");
1197 if (r < 0)
1198 return bus_log_create_error(r);
1199
1200 /* Properties */
1201 r = sd_bus_message_open_container(m, 'a', "(sv)");
1202 if (r < 0)
1203 return bus_log_create_error(r);
1204
1205 r = transient_service_set_properties(m, pty_path);
1206 if (r < 0)
1207 return r;
1208
1209 r = sd_bus_message_close_container(m);
1210 if (r < 0)
1211 return bus_log_create_error(r);
1212
1213 /* Auxiliary units */
1214 r = sd_bus_message_append(m, "a(sa(sv))", 0);
1215 if (r < 0)
1216 return bus_log_create_error(r);
1217
1218 polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
1219
1220 r = sd_bus_call(bus, m, 0, &error, &reply);
1221 if (r < 0)
1222 return log_error_errno(r, "Failed to start transient service unit: %s", bus_error_message(&error, r));
1223
1224 if (w) {
1225 const char *object;
1226
1227 r = sd_bus_message_read(reply, "o", &object);
1228 if (r < 0)
1229 return bus_log_parse_error(r);
1230
1231 r = bus_wait_for_jobs_one(w, object, arg_quiet, arg_user ? STRV_MAKE_CONST("--user") : NULL);
1232 if (r < 0)
1233 return r;
1234 }
1235
1236 if (!arg_quiet)
1237 log_info("Running as unit: %s", service);
1238
1239 if (arg_wait || arg_stdio != ARG_STDIO_NONE) {
1240 _cleanup_(run_context_free) RunContext c = {
1241 .cpu_usage_nsec = NSEC_INFINITY,
1242 .ip_ingress_bytes = UINT64_MAX,
1243 .ip_egress_bytes = UINT64_MAX,
1244 .io_read_bytes = UINT64_MAX,
1245 .io_write_bytes = UINT64_MAX,
1246 .inactive_exit_usec = USEC_INFINITY,
1247 .inactive_enter_usec = USEC_INFINITY,
1248 };
1249 _cleanup_free_ char *path = NULL;
1250
1251 c.bus = sd_bus_ref(bus);
1252
1253 r = sd_event_default(&c.event);
1254 if (r < 0)
1255 return log_error_errno(r, "Failed to get event loop: %m");
1256
1257 if (master >= 0) {
1258 assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGWINCH, SIGTERM, SIGINT, -1) >= 0);
1259 (void) sd_event_add_signal(c.event, NULL, SIGINT, NULL, NULL);
1260 (void) sd_event_add_signal(c.event, NULL, SIGTERM, NULL, NULL);
1261
1262 if (!arg_quiet)
1263 log_info("Press ^] three times within 1s to disconnect TTY.");
1264
1265 r = pty_forward_new(c.event, master, PTY_FORWARD_IGNORE_INITIAL_VHANGUP, &c.forward);
1266 if (r < 0)
1267 return log_error_errno(r, "Failed to create PTY forwarder: %m");
1268
1269 pty_forward_set_handler(c.forward, pty_forward_handler, &c);
1270
1271 /* Make sure to process any TTY events before we process bus events */
1272 (void) pty_forward_set_priority(c.forward, SD_EVENT_PRIORITY_IMPORTANT);
1273 }
1274
1275 path = unit_dbus_path_from_name(service);
1276 if (!path)
1277 return log_oom();
1278
1279 r = sd_bus_match_signal_async(
1280 bus,
1281 &c.match,
1282 "org.freedesktop.systemd1",
1283 path,
1284 "org.freedesktop.DBus.Properties",
1285 "PropertiesChanged",
1286 on_properties_changed, NULL, &c);
1287 if (r < 0)
1288 return log_error_errno(r, "Failed to request properties changed signal match: %m");
1289
1290 r = sd_bus_attach_event(bus, c.event, SD_EVENT_PRIORITY_NORMAL);
1291 if (r < 0)
1292 return log_error_errno(r, "Failed to attach bus to event loop: %m");
1293
1294 r = run_context_update(&c, path);
1295 if (r < 0)
1296 return r;
1297
1298 r = sd_event_loop(c.event);
1299 if (r < 0)
1300 return log_error_errno(r, "Failed to run event loop: %m");
1301
1302 if (c.forward) {
1303 char last_char = 0;
1304
1305 r = pty_forward_get_last_char(c.forward, &last_char);
1306 if (r >= 0 && !arg_quiet && last_char != '\n')
1307 fputc('\n', stdout);
1308 }
1309
1310 if (arg_wait && !arg_quiet) {
1311
1312 /* Explicitly destroy the PTY forwarder, so that the PTY device is usable again, with its
1313 * original settings (i.e. proper line breaks), so that we can show the summary in a pretty
1314 * way. */
1315 c.forward = pty_forward_free(c.forward);
1316
1317 if (!isempty(c.result))
1318 log_info("Finished with result: %s", strna(c.result));
1319
1320 if (c.exit_code == CLD_EXITED)
1321 log_info("Main processes terminated with: code=%s/status=%u",
1322 sigchld_code_to_string(c.exit_code), c.exit_status);
1323 else if (c.exit_code > 0)
1324 log_info("Main processes terminated with: code=%s/status=%s",
1325 sigchld_code_to_string(c.exit_code), signal_to_string(c.exit_status));
1326
1327 if (timestamp_is_set(c.inactive_enter_usec) &&
1328 timestamp_is_set(c.inactive_exit_usec) &&
1329 c.inactive_enter_usec > c.inactive_exit_usec)
1330 log_info("Service runtime: %s",
1331 FORMAT_TIMESPAN(c.inactive_enter_usec - c.inactive_exit_usec, USEC_PER_MSEC));
1332
1333 if (c.cpu_usage_nsec != NSEC_INFINITY)
1334 log_info("CPU time consumed: %s",
1335 FORMAT_TIMESPAN(DIV_ROUND_UP(c.cpu_usage_nsec, NSEC_PER_USEC), USEC_PER_MSEC));
1336
1337 if (c.ip_ingress_bytes != UINT64_MAX)
1338 log_info("IP traffic received: %s", FORMAT_BYTES(c.ip_ingress_bytes));
1339
1340 if (c.ip_egress_bytes != UINT64_MAX)
1341 log_info("IP traffic sent: %s", FORMAT_BYTES(c.ip_egress_bytes));
1342
1343 if (c.io_read_bytes != UINT64_MAX)
1344 log_info("IO bytes read: %s", FORMAT_BYTES(c.io_read_bytes));
1345
1346 if (c.io_write_bytes != UINT64_MAX)
1347 log_info("IO bytes written: %s", FORMAT_BYTES(c.io_write_bytes));
1348 }
1349
1350 /* Try to propagate the service's return value. But if the service defines
1351 * e.g. SuccessExitStatus, honour this, and return 0 to mean "success". */
1352 if (streq_ptr(c.result, "success"))
1353 *retval = 0;
1354 else if (streq_ptr(c.result, "exit-code") && c.exit_status > 0)
1355 *retval = c.exit_status;
1356 else if (streq_ptr(c.result, "signal"))
1357 *retval = EXIT_EXCEPTION;
1358 else
1359 *retval = EXIT_FAILURE;
1360 }
1361
1362 return 0;
1363 }
1364
1365 static int acquire_invocation_id(sd_bus *bus, sd_id128_t *ret) {
1366 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1367 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1368 const void *p;
1369 size_t l;
1370 int r;
1371
1372 assert(bus);
1373 assert(ret);
1374
1375 r = sd_bus_get_property(bus,
1376 "org.freedesktop.systemd1",
1377 "/org/freedesktop/systemd1/unit/self",
1378 "org.freedesktop.systemd1.Unit",
1379 "InvocationID",
1380 &error,
1381 &reply,
1382 "ay");
1383 if (r < 0)
1384 return log_error_errno(r, "Failed to request invocation ID for scope: %s", bus_error_message(&error, r));
1385
1386 r = sd_bus_message_read_array(reply, 'y', &p, &l);
1387 if (r < 0)
1388 return bus_log_parse_error(r);
1389
1390 if (l != sizeof(sd_id128_t))
1391 return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Invalid UUID size, %zu != %zu.", l, sizeof(sd_id128_t));
1392
1393 memcpy(ret, p, l);
1394 return 0;
1395 }
1396
1397 static int start_transient_scope(sd_bus *bus) {
1398 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1399 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
1400 _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL;
1401 _cleanup_strv_free_ char **env = NULL, **user_env = NULL;
1402 _cleanup_free_ char *scope = NULL;
1403 const char *object = NULL;
1404 sd_id128_t invocation_id;
1405 int r;
1406
1407 assert(bus);
1408 assert(!strv_isempty(arg_cmdline));
1409
1410 r = bus_wait_for_jobs_new(bus, &w);
1411 if (r < 0)
1412 return log_oom();
1413
1414 if (arg_unit) {
1415 r = unit_name_mangle_with_suffix(arg_unit, "as unit",
1416 arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN,
1417 ".scope", &scope);
1418 if (r < 0)
1419 return log_error_errno(r, "Failed to mangle scope name: %m");
1420 } else {
1421 r = make_unit_name(bus, UNIT_SCOPE, &scope);
1422 if (r < 0)
1423 return r;
1424 }
1425
1426 r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, "StartTransientUnit");
1427 if (r < 0)
1428 return bus_log_create_error(r);
1429
1430 r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
1431 if (r < 0)
1432 return bus_log_create_error(r);
1433
1434 /* Name and Mode */
1435 r = sd_bus_message_append(m, "ss", scope, "fail");
1436 if (r < 0)
1437 return bus_log_create_error(r);
1438
1439 /* Properties */
1440 r = sd_bus_message_open_container(m, 'a', "(sv)");
1441 if (r < 0)
1442 return bus_log_create_error(r);
1443
1444 r = transient_scope_set_properties(m);
1445 if (r < 0)
1446 return r;
1447
1448 r = sd_bus_message_close_container(m);
1449 if (r < 0)
1450 return bus_log_create_error(r);
1451
1452 /* Auxiliary units */
1453 r = sd_bus_message_append(m, "a(sa(sv))", 0);
1454 if (r < 0)
1455 return bus_log_create_error(r);
1456
1457 polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
1458
1459 r = sd_bus_call(bus, m, 0, &error, &reply);
1460 if (r < 0)
1461 return log_error_errno(r, "Failed to start transient scope unit: %s", bus_error_message(&error, r));
1462
1463 r = sd_bus_message_read(reply, "o", &object);
1464 if (r < 0)
1465 return bus_log_parse_error(r);
1466
1467 r = bus_wait_for_jobs_one(w, object, arg_quiet, arg_user ? STRV_MAKE_CONST("--user") : NULL);
1468 if (r < 0)
1469 return r;
1470
1471 r = acquire_invocation_id(bus, &invocation_id);
1472 if (r < 0)
1473 return r;
1474
1475 r = strv_extendf(&user_env, "INVOCATION_ID=" SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(invocation_id));
1476 if (r < 0)
1477 return log_oom();
1478
1479 if (arg_nice_set) {
1480 if (setpriority(PRIO_PROCESS, 0, arg_nice) < 0)
1481 return log_error_errno(errno, "Failed to set nice level: %m");
1482 }
1483
1484 if (arg_exec_group) {
1485 gid_t gid;
1486
1487 r = get_group_creds(&arg_exec_group, &gid, 0);
1488 if (r < 0)
1489 return log_error_errno(r, "Failed to resolve group %s: %m", arg_exec_group);
1490
1491 if (setresgid(gid, gid, gid) < 0)
1492 return log_error_errno(errno, "Failed to change GID to " GID_FMT ": %m", gid);
1493 }
1494
1495 if (arg_exec_user) {
1496 const char *home, *shell;
1497 uid_t uid;
1498 gid_t gid;
1499
1500 r = get_user_creds(&arg_exec_user, &uid, &gid, &home, &shell, USER_CREDS_CLEAN|USER_CREDS_PREFER_NSS);
1501 if (r < 0)
1502 return log_error_errno(r, "Failed to resolve user %s: %m", arg_exec_user);
1503
1504 if (home) {
1505 r = strv_extendf(&user_env, "HOME=%s", home);
1506 if (r < 0)
1507 return log_oom();
1508 }
1509
1510 if (shell) {
1511 r = strv_extendf(&user_env, "SHELL=%s", shell);
1512 if (r < 0)
1513 return log_oom();
1514 }
1515
1516 r = strv_extendf(&user_env, "USER=%s", arg_exec_user);
1517 if (r < 0)
1518 return log_oom();
1519
1520 r = strv_extendf(&user_env, "LOGNAME=%s", arg_exec_user);
1521 if (r < 0)
1522 return log_oom();
1523
1524 if (!arg_exec_group) {
1525 if (setresgid(gid, gid, gid) < 0)
1526 return log_error_errno(errno, "Failed to change GID to " GID_FMT ": %m", gid);
1527 }
1528
1529 if (setresuid(uid, uid, uid) < 0)
1530 return log_error_errno(errno, "Failed to change UID to " UID_FMT ": %m", uid);
1531 }
1532
1533 if (arg_working_directory && chdir(arg_working_directory) < 0)
1534 return log_error_errno(errno, "Failed to change directory to '%s': %m", arg_working_directory);
1535
1536 env = strv_env_merge(environ, user_env, arg_environment);
1537 if (!env)
1538 return log_oom();
1539
1540 if (!arg_quiet)
1541 log_info("Running scope as unit: %s", scope);
1542
1543 execvpe(arg_cmdline[0], arg_cmdline, env);
1544
1545 return log_error_errno(errno, "Failed to execute: %m");
1546 }
1547
1548 static int start_transient_trigger(
1549 sd_bus *bus,
1550 const char *suffix) {
1551
1552 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1553 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
1554 _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL;
1555 _cleanup_free_ char *trigger = NULL, *service = NULL;
1556 const char *object = NULL;
1557 int r;
1558
1559 assert(bus);
1560
1561 r = bus_wait_for_jobs_new(bus, &w);
1562 if (r < 0)
1563 return log_oom();
1564
1565 if (arg_unit) {
1566 switch (unit_name_to_type(arg_unit)) {
1567
1568 case UNIT_SERVICE:
1569 service = strdup(arg_unit);
1570 if (!service)
1571 return log_oom();
1572
1573 r = unit_name_change_suffix(service, suffix, &trigger);
1574 if (r < 0)
1575 return log_error_errno(r, "Failed to change unit suffix: %m");
1576 break;
1577
1578 case UNIT_TIMER:
1579 trigger = strdup(arg_unit);
1580 if (!trigger)
1581 return log_oom();
1582
1583 r = unit_name_change_suffix(trigger, ".service", &service);
1584 if (r < 0)
1585 return log_error_errno(r, "Failed to change unit suffix: %m");
1586 break;
1587
1588 default:
1589 r = unit_name_mangle_with_suffix(arg_unit, "as unit",
1590 arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN,
1591 ".service", &service);
1592 if (r < 0)
1593 return log_error_errno(r, "Failed to mangle unit name: %m");
1594
1595 r = unit_name_mangle_with_suffix(arg_unit, "as trigger",
1596 arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN,
1597 suffix, &trigger);
1598 if (r < 0)
1599 return log_error_errno(r, "Failed to mangle unit name: %m");
1600
1601 break;
1602 }
1603 } else {
1604 r = make_unit_name(bus, UNIT_SERVICE, &service);
1605 if (r < 0)
1606 return r;
1607
1608 r = unit_name_change_suffix(service, suffix, &trigger);
1609 if (r < 0)
1610 return log_error_errno(r, "Failed to change unit suffix: %m");
1611 }
1612
1613 r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, "StartTransientUnit");
1614 if (r < 0)
1615 return bus_log_create_error(r);
1616
1617 r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
1618 if (r < 0)
1619 return bus_log_create_error(r);
1620
1621 /* Name and Mode */
1622 r = sd_bus_message_append(m, "ss", trigger, "fail");
1623 if (r < 0)
1624 return bus_log_create_error(r);
1625
1626 /* Properties */
1627 r = sd_bus_message_open_container(m, 'a', "(sv)");
1628 if (r < 0)
1629 return bus_log_create_error(r);
1630
1631 if (streq(suffix, ".path"))
1632 r = transient_unit_set_properties(m, UNIT_PATH, arg_path_property);
1633 else if (streq(suffix, ".socket"))
1634 r = transient_unit_set_properties(m, UNIT_SOCKET, arg_socket_property);
1635 else if (streq(suffix, ".timer"))
1636 r = transient_timer_set_properties(m);
1637 else
1638 assert_not_reached();
1639 if (r < 0)
1640 return r;
1641
1642 r = sd_bus_message_close_container(m);
1643 if (r < 0)
1644 return bus_log_create_error(r);
1645
1646 r = sd_bus_message_open_container(m, 'a', "(sa(sv))");
1647 if (r < 0)
1648 return bus_log_create_error(r);
1649
1650 if (!strv_isempty(arg_cmdline)) {
1651 r = sd_bus_message_open_container(m, 'r', "sa(sv)");
1652 if (r < 0)
1653 return bus_log_create_error(r);
1654
1655 r = sd_bus_message_append(m, "s", service);
1656 if (r < 0)
1657 return bus_log_create_error(r);
1658
1659 r = sd_bus_message_open_container(m, 'a', "(sv)");
1660 if (r < 0)
1661 return bus_log_create_error(r);
1662
1663 r = transient_service_set_properties(m, NULL);
1664 if (r < 0)
1665 return r;
1666
1667 r = sd_bus_message_close_container(m);
1668 if (r < 0)
1669 return bus_log_create_error(r);
1670
1671 r = sd_bus_message_close_container(m);
1672 if (r < 0)
1673 return bus_log_create_error(r);
1674 }
1675
1676 r = sd_bus_message_close_container(m);
1677 if (r < 0)
1678 return bus_log_create_error(r);
1679
1680 polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
1681
1682 r = sd_bus_call(bus, m, 0, &error, &reply);
1683 if (r < 0)
1684 return log_error_errno(r, "Failed to start transient %s unit: %s", suffix + 1, bus_error_message(&error, r));
1685
1686 r = sd_bus_message_read(reply, "o", &object);
1687 if (r < 0)
1688 return bus_log_parse_error(r);
1689
1690 r = bus_wait_for_jobs_one(w, object, arg_quiet, arg_user ? STRV_MAKE_CONST("--user") : NULL);
1691 if (r < 0)
1692 return r;
1693
1694 if (!arg_quiet) {
1695 log_info("Running %s as unit: %s", suffix + 1, trigger);
1696 if (!strv_isempty(arg_cmdline))
1697 log_info("Will run service as unit: %s", service);
1698 }
1699
1700 return 0;
1701 }
1702
1703 static bool shall_make_executable_absolute(void) {
1704 if (strv_isempty(arg_cmdline))
1705 return false;
1706 if (arg_transport != BUS_TRANSPORT_LOCAL)
1707 return false;
1708
1709 FOREACH_STRING(f, "RootDirectory=", "RootImage=", "ExecSearchPath=", "MountImages=", "ExtensionImages=")
1710 if (strv_find_startswith(arg_property, f))
1711 return false;
1712
1713 return true;
1714 }
1715
1716 static int run(int argc, char* argv[]) {
1717 _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
1718 _cleanup_free_ char *description = NULL;
1719 int r, retval = EXIT_SUCCESS;
1720
1721 log_show_color(true);
1722 log_parse_environment();
1723 log_open();
1724
1725 r = parse_argv(argc, argv);
1726 if (r <= 0)
1727 return r;
1728
1729 if (shall_make_executable_absolute()) {
1730 /* Patch in an absolute path to fail early for user convenience, but only when we can do it
1731 * (i.e. we will be running from the same file system). This also uses the user's $PATH,
1732 * while we use a fixed search path in the manager. */
1733
1734 _cleanup_free_ char *command = NULL;
1735 r = find_executable(arg_cmdline[0], &command);
1736 if (r < 0)
1737 return log_error_errno(r, "Failed to find executable %s: %m", arg_cmdline[0]);
1738
1739 free_and_replace(arg_cmdline[0], command);
1740 }
1741
1742 if (!arg_description) {
1743 description = strv_join(arg_cmdline, " ");
1744 if (!description)
1745 return log_oom();
1746
1747 if (arg_unit && isempty(description)) {
1748 r = free_and_strdup(&description, arg_unit);
1749 if (r < 0)
1750 return log_oom();
1751 }
1752
1753 arg_description = description;
1754 }
1755
1756 /* If --wait is used connect via the bus, unconditionally, as ref/unref is not supported via the limited direct
1757 * connection */
1758 if (arg_wait || arg_stdio != ARG_STDIO_NONE || (arg_user && arg_transport != BUS_TRANSPORT_LOCAL))
1759 r = bus_connect_transport(arg_transport, arg_host, arg_user, &bus);
1760 else
1761 r = bus_connect_transport_systemd(arg_transport, arg_host, arg_user, &bus);
1762 if (r < 0)
1763 return bus_log_connect_error(r, arg_transport);
1764
1765 if (arg_scope)
1766 r = start_transient_scope(bus);
1767 else if (arg_path_property)
1768 r = start_transient_trigger(bus, ".path");
1769 else if (arg_socket_property)
1770 r = start_transient_trigger(bus, ".socket");
1771 else if (arg_with_timer)
1772 r = start_transient_trigger(bus, ".timer");
1773 else
1774 r = start_transient_service(bus, &retval);
1775 if (r < 0)
1776 return r;
1777
1778 return retval;
1779 }
1780
1781 DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run);
Unnamed repository; edit this file 'description' to name the repository.