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