summaryrefslogtreecommitdiffstats
path: root/src/portable/portablectl.c
blob: bb6cebdf16d65e17e96431536bd1b7d47924c452 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
/* SPDX-License-Identifier: LGPL-2.1+ */

#include <errno.h>
#include <getopt.h>

#include "sd-bus.h"

#include "alloc-util.h"
#include "bus-error.h"
#include "bus-util.h"
#include "def.h"
#include "dirent-util.h"
#include "env-file.h"
#include "fd-util.h"
#include "format-table.h"
#include "fs-util.h"
#include "locale-util.h"
#include "machine-image.h"
#include "main-func.h"
#include "pager.h"
#include "parse-util.h"
#include "path-util.h"
#include "pretty-print.h"
#include "spawn-polkit-agent.h"
#include "string-util.h"
#include "strv.h"
#include "terminal-util.h"
#include "verbs.h"

static PagerFlags arg_pager_flags = 0;
static bool arg_legend = true;
static bool arg_ask_password = true;
static bool arg_quiet = false;
static const char *arg_profile = "default";
static const char* arg_copy_mode = NULL;
static bool arg_runtime = false;
static bool arg_reload = true;
static bool arg_cat = false;
static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
static const char *arg_host = NULL;

static int determine_image(const char *image, bool permit_non_existing, char **ret) {
        int r;

        /* If the specified name is a valid image name, we pass it as-is to portabled, which will search for it in the
         * usual search directories. Otherwise we presume it's a path, and will normalize it on the client's side
         * (among other things, to make the path independent of the client's working directory) before passing it
         * over. */

        if (image_name_is_valid(image)) {
                char *c;

                if (!arg_quiet && laccess(image, F_OK) >= 0)
                        log_warning("Ambiguous invocation: current working directory contains file matching non-path argument '%s', ignoring. "
                                    "Prefix argument with './' to force reference to file in current working directory.", image);

                c = strdup(image);
                if (!c)
                        return log_oom();

                *ret = c;
                return 0;
        }

        if (arg_transport != BUS_TRANSPORT_LOCAL)
                return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
                                       "Operations on images by path not supported when connecting to remote systems.");

        r = chase_symlinks(image, NULL, CHASE_TRAIL_SLASH | (permit_non_existing ? CHASE_NONEXISTENT : 0), ret);
        if (r < 0)
                return log_error_errno(r, "Cannot normalize specified image path '%s': %m", image);

        return 0;
}

static int extract_prefix(const char *path, char **ret) {
        _cleanup_free_ char *name = NULL;
        const char *bn, *underscore;
        size_t m;

        bn = basename(path);

        underscore = strchr(bn, '_');
        if (underscore)
                m = underscore - bn;
        else {
                const char *e;

                e = endswith(bn, ".raw");
                if (!e)
                        e = strchr(bn, 0);

                m = e - bn;
        }

        name = strndup(bn, m);
        if (!name)
                return -ENOMEM;

        /*  A slightly reduced version of what's permitted in unit names. With ':' and '\' are removed, as well as '_'
         *  which we use as delimiter for the second part of the image string, which we ignore for now. */
        if (!in_charset(name, DIGITS LETTERS "-."))
                return -EINVAL;

        if (!filename_is_valid(name))
                return -EINVAL;

        *ret = TAKE_PTR(name);

        return 0;
}

static int determine_matches(const char *image, char **l, bool allow_any, char ***ret) {
        _cleanup_strv_free_ char **k = NULL;
        int r;

        /* Determine the matches to apply. If the list is empty we derive the match from the image name. If the list
         * contains exactly the "-" we return a wildcard list (which is the empty list), but only if this is expressly
         * permitted. */

        if (strv_isempty(l)) {
                char *prefix;

                r = extract_prefix(image, &prefix);
                if (r < 0)
                        return log_error_errno(r, "Failed to extract prefix of image name '%s': %m", image);

                if (!arg_quiet)
                        log_info("(Matching unit files with prefix '%s'.)", prefix);

                r = strv_consume(&k, prefix);
                if (r < 0)
                        return log_oom();

        } else if (strv_equal(l, STRV_MAKE("-"))) {

                if (!allow_any)
                        return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
                                               "Refusing all unit file match.");

                if (!arg_quiet)
                        log_info("(Matching all unit files.)");
        } else {

                k = strv_copy(l);
                if (!k)
                        return log_oom();

                if (!arg_quiet) {
                        _cleanup_free_ char *joined = NULL;

                        joined = strv_join(k, "', '");
                        if (!joined)
                                return log_oom();

                        log_info("(Matching unit files with prefixes '%s'.)", joined);
                }
        }

        *ret = TAKE_PTR(k);

        return 0;
}

static int acquire_bus(sd_bus **bus) {
        int r;

        assert(bus);

        if (*bus)
                return 0;

        r = bus_connect_transport(arg_transport, arg_host, false, bus);
        if (r < 0)
                return log_error_errno(r, "Failed to connect to bus: %m");

        (void) sd_bus_set_allow_interactive_authorization(*bus, arg_ask_password);

        return 0;
}

static int maybe_reload(sd_bus **bus) {
        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
        _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
        int r;

        if (!arg_reload)
                return 0;

        r = acquire_bus(bus);
        if (r < 0)
                return r;

        r = sd_bus_message_new_method_call(
                        *bus,
                        &m,
                        "org.freedesktop.systemd1",
                        "/org/freedesktop/systemd1",
                        "org.freedesktop.systemd1.Manager",
                        "Reload");
        if (r < 0)
                return bus_log_create_error(r);

        /* Reloading the daemon may take long, hence set a longer timeout here */
        r = sd_bus_call(*bus, m, DEFAULT_TIMEOUT_USEC * 2, &error, NULL);
        if (r < 0)
                return log_error_errno(r, "Failed to reload daemon: %s", bus_error_message(&error, r));

        return 0;
}

static int inspect_image(int argc, char *argv[], void *userdata) {
        _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
        _cleanup_strv_free_ char **matches = NULL;
        _cleanup_free_ char *image = NULL;
        bool nl = false, header = false;
        const void *data;
        const char *path;
        size_t sz;
        int r;

        r = determine_image(argv[1], false, &image);
        if (r < 0)
                return r;

        r = determine_matches(argv[1], argv + 2, true, &matches);
        if (r < 0)
                return r;

        r = acquire_bus(&bus);
        if (r < 0)
                return r;

        r = sd_bus_message_new_method_call(
                                bus,
                                &m,
                                "org.freedesktop.portable1",
                                "/org/freedesktop/portable1",
                                "org.freedesktop.portable1.Manager",
                                "GetImageMetadata");
        if (r < 0)
                return bus_log_create_error(r);

        r = sd_bus_message_append(m, "s", image);
        if (r < 0)
                return bus_log_create_error(r);

        r = sd_bus_message_append_strv(m, matches);
        if (r < 0)
                return bus_log_create_error(r);

        r = sd_bus_call(bus, m, 0, &error, &reply);
        if (r < 0)
                return log_error_errno(r, "Failed to inspect image metadata: %s", bus_error_message(&error, r));

        r = sd_bus_message_read(reply, "s", &path);
        if (r < 0)
                return bus_log_parse_error(r);

        r = sd_bus_message_read_array(reply, 'y', &data, &sz);
        if (r < 0)
                return bus_log_parse_error(r);

        (void) pager_open(arg_pager_flags);

        if (arg_cat) {
                printf("%s-- OS Release: --%s\n", ansi_highlight(), ansi_normal());
                fwrite(data, sz, 1, stdout);
                fflush(stdout);
                nl = true;
        } else {
                _cleanup_free_ char *pretty_portable = NULL, *pretty_os = NULL;

                _cleanup_fclose_ FILE *f;

                f = fmemopen((void*) data, sz, "re");
                if (!f)
                        return log_error_errno(errno, "Failed to open /etc/os-release buffer: %m");

                r = parse_env_file(f, "/etc/os-release",
                                   "PORTABLE_PRETTY_NAME", &pretty_portable,
                                   "PRETTY_NAME", &pretty_os);
                if (r < 0)
                        return log_error_errno(r, "Failed to parse /etc/os-release: %m");

                printf("Image:\n\t%s\n"
                       "Portable Service:\n\t%s\n"
                       "Operating System:\n\t%s\n",
                       path,
                       strna(pretty_portable),
                       strna(pretty_os));
        }

        r = sd_bus_message_enter_container(reply, 'a', "{say}");
        if (r < 0)
                return bus_log_parse_error(r);

        for (;;) {
                const char *name;

                r = sd_bus_message_enter_container(reply, 'e', "say");
                if (r < 0)
                        return bus_log_parse_error(r);
                if (r == 0)
                        break;

                r = sd_bus_message_read(reply, "s", &name);
                if (r < 0)
                        return bus_log_parse_error(r);

                r = sd_bus_message_read_array(reply, 'y', &data, &sz);
                if (r < 0)
                        return bus_log_parse_error(r);

                if (arg_cat) {
                        if (nl)
                                fputc('\n', stdout);

                        printf("%s-- Unit file: %s --%s\n", ansi_highlight(), name, ansi_normal());
                        fwrite(data, sz, 1, stdout);
                        fflush(stdout);
                        nl = true;
                } else {
                        if (!header) {
                                fputs("Unit files:\n", stdout);
                                header = true;
                        }

                        fputc('\t', stdout);
                        fputs(name, stdout);
                        fputc('\n', stdout);
                }

                r = sd_bus_message_exit_container(reply);
                if (r < 0)
                        return bus_log_parse_error(r);
        }

        r = sd_bus_message_exit_container(reply);
        if (r < 0)
                return bus_log_parse_error(r);

        return 0;
}

static int print_changes(sd_bus_message *m) {
        int r;

        if (arg_quiet)
                return 0;

        r = sd_bus_message_enter_container(m, 'a', "(sss)");
        if (r < 0)
                return bus_log_parse_error(r);

        for (;;) {
                const char *type, *path, *source;

                r = sd_bus_message_read(m, "(sss)", &type, &path, &source);
                if (r < 0)
                        return bus_log_parse_error(r);
                if (r == 0)
                        break;

                if (streq(type, "symlink"))
                        log_info("Created symlink %s %s %s.", path, special_glyph(SPECIAL_GLYPH_ARROW), source);
                else if (streq(type, "copy")) {
                        if (isempty(source))
                                log_info("Copied %s.", path);
                        else
                                log_info("Copied %s %s %s.", source, special_glyph(SPECIAL_GLYPH_ARROW), path);
                } else if (streq(type, "unlink"))
                        log_info("Removed %s.", path);
                else if (streq(type, "write"))
                        log_info("Written %s.", path);
                else if (streq(type, "mkdir"))
                        log_info("Created directory %s.", path);
                else
                        log_error("Unexpected change: %s/%s/%s", type, path, source);
        }

        r = sd_bus_message_exit_container(m);
        if (r < 0)
                return r;

        return 0;
}

static int attach_image(int argc, char *argv[], void *userdata) {
        _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
        _cleanup_strv_free_ char **matches = NULL;
        _cleanup_free_ char *image = NULL;
        int r;

        r = determine_image(argv[1], false, &image);
        if (r < 0)
                return r;

        r = determine_matches(argv[1], argv + 2, false, &matches);
        if (r < 0)
                return r;

        r = acquire_bus(&bus);
        if (r < 0)
                return r;

        (void) polkit_agent_open_if_enabled(arg_transport, arg_ask_password);

        r = sd_bus_message_new_method_call(
                                bus,
                                &m,
                                "org.freedesktop.portable1",
                                "/org/freedesktop/portable1",
                                "org.freedesktop.portable1.Manager",
                                "AttachImage");
        if (r < 0)
                return bus_log_create_error(r);

        r = sd_bus_message_append(m, "s", image);
        if (r < 0)
                return bus_log_create_error(r);

        r = sd_bus_message_append_strv(m, matches);
        if (r < 0)
                return bus_log_create_error(r);

        r = sd_bus_message_append(m, "sbs", arg_profile, arg_runtime, arg_copy_mode);
        if (r < 0)
                return bus_log_create_error(r);

        r = sd_bus_call(bus, m, 0, &error, &reply);
        if (r < 0)
                return log_error_errno(r, "Failed to attach image: %s", bus_error_message(&error, r));

        (void) maybe_reload(&bus);

        print_changes(reply);
        return 0;
}

static int detach_image(int argc, char *argv[], void *userdata) {
        _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
        _cleanup_free_ char *image = NULL;
        int r;

        r = determine_image(argv[1], true, &image);
        if (r < 0)
                return r;

        r = acquire_bus(&bus);
        if (r < 0)
                return r;

        (void) polkit_agent_open_if_enabled(arg_transport, arg_ask_password);

        r = sd_bus_call_method(
                        bus,
                        "org.freedesktop.portable1",
                        "/org/freedesktop/portable1",
                        "org.freedesktop.portable1.Manager",
                        "DetachImage",
                        &error,
                        &reply,
                        "sb", image, arg_runtime);
        if (r < 0)
                return log_error_errno(r, "Failed to detach image: %s", bus_error_message(&error, r));

        (void) maybe_reload(&bus);

        print_changes(reply);
        return 0;
}

static int list_images(int argc, char *argv[], void *userdata) {
        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
        _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
        _cleanup_(table_unrefp) Table *table = NULL;
        int r;

        r = acquire_bus(&bus);
        if (r < 0)
                return r;

        r = sd_bus_call_method(
                        bus,
                        "org.freedesktop.portable1",
                        "/org/freedesktop/portable1",
                        "org.freedesktop.portable1.Manager",
                        "ListImages",
                        &error,
                        &reply,
                        NULL);
        if (r < 0)
                return log_error_errno(r, "Failed to list images: %s", bus_error_message(&error, r));

        table = table_new("name", "type", "ro", "crtime", "mtime", "usage", "state");
        if (!table)
                return log_oom();

        r = sd_bus_message_enter_container(reply, 'a', "(ssbtttso)");
        if (r < 0)
                return bus_log_parse_error(r);

        for (;;) {
                const char *name, *type, *state;
                uint64_t crtime, mtime, usage;
                TableCell *cell;
                bool ro_bool;
                int ro_int;

                r = sd_bus_message_read(reply, "(ssbtttso)", &name, &type, &ro_int, &crtime, &mtime, &usage, &state, NULL);
                if (r < 0)
                        return bus_log_parse_error(r);
                if (r == 0)
                        break;

                r = table_add_many(table,
                                   TABLE_STRING, name,
                                   TABLE_STRING, type);
                if (r < 0)
                        return log_error_errno(r, "Failed to add row to table: %m");

                ro_bool = ro_int;
                r = table_add_cell(table, &cell, TABLE_BOOLEAN, &ro_bool);
                if (r < 0)
                        return log_error_errno(r, "Failed to add row to table: %m");

                if (ro_bool) {
                        r = table_set_color(table, cell, ansi_highlight_red());
                        if (r < 0)
                                return log_error_errno(r, "Failed to set table cell color: %m");
                }

                r = table_add_many(table,
                                   TABLE_TIMESTAMP, crtime,
                                   TABLE_TIMESTAMP, mtime,
                                   TABLE_SIZE, usage);
                if (r < 0)
                        return log_error_errno(r, "Failed to add row to table: %m");

                r = table_add_cell(table, &cell, TABLE_STRING, state);
                if (r < 0)
                        return log_error_errno(r, "Failed to add row to table: %m");

                if (!streq(state, "detached")) {
                        r = table_set_color(table, cell, ansi_highlight_green());
                        if (r < 0)
                                return log_error_errno(r, "Failed to set table cell color: %m");
                }
        }

        r = sd_bus_message_exit_container(reply);
        if (r < 0)
                return bus_log_parse_error(r);

        if (table_get_rows(table) > 1) {
                r = table_set_sort(table, (size_t) 0, (size_t) -1);
                if (r < 0)
                        return log_error_errno(r, "Failed to sort table: %m");

                table_set_header(table, arg_legend);

                r = table_print(table, NULL);
                if (r < 0)
                        return log_error_errno(r, "Failed to show table: %m");
        }

        if (arg_legend) {
                if (table_get_rows(table) > 1)
                        printf("\n%zu images listed.\n", table_get_rows(table) - 1);
                else
                        printf("No images.\n");
        }

        return 0;
}

static int remove_image(int argc, char *argv[], void *userdata) {
        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
        int r, i;

        r = acquire_bus(&bus);
        if (r < 0)
                return r;

        (void) polkit_agent_open_if_enabled(arg_transport, arg_ask_password);

        for (i = 1; i < argc; i++) {
                _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
                _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;

                r = sd_bus_message_new_method_call(
                                bus,
                                &m,
                                "org.freedesktop.portable1",
                                "/org/freedesktop/portable1",
                                "org.freedesktop.portable1.Manager",
                                "RemoveImage");
                if (r < 0)
                        return bus_log_create_error(r);

                r = sd_bus_message_append(m, "s", argv[i]);
                if (r < 0)
                        return bus_log_create_error(r);

                /* This is a slow operation, hence turn off any method call timeouts */
                r = sd_bus_call(bus, m, USEC_INFINITY, &error, NULL);
                if (r < 0)
                        return log_error_errno(r, "Could not remove image: %s", bus_error_message(&error, r));
        }

        return 0;
}

static int read_only_image(int argc, char *argv[], void *userdata) {
        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
        int b = true, r;

        if (argc > 2) {
                b = parse_boolean(argv[2]);
                if (b < 0)
                        return log_error_errno(b, "Failed to parse boolean argument: %s", argv[2]);
        }

        r = acquire_bus(&bus);
        if (r < 0)
                return r;

        (void) polkit_agent_open_if_enabled(arg_transport, arg_ask_password);

        r = sd_bus_call_method(
                        bus,
                        "org.freedesktop.portable1",
                        "/org/freedesktop/portable1",
                        "org.freedesktop.portable1.Manager",
                        "MarkImageReadOnly",
                        &error,
                        NULL,
                        "sb", argv[1], b);
        if (r < 0)
                return log_error_errno(r, "Could not mark image read-only: %s", bus_error_message(&error, r));

        return 0;
}

static int set_limit(int argc, char *argv[], void *userdata) {
        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
        uint64_t limit;
        int r;

        r = acquire_bus(&bus);
        if (r < 0)
                return r;

        (void) polkit_agent_open_if_enabled(arg_transport, arg_ask_password);

        if (STR_IN_SET(argv[argc-1], "-", "none", "infinity"))
                limit = (uint64_t) -1;
        else {
                r = parse_size(argv[argc-1], 1024, &limit);
                if (r < 0)
                        return log_error_errno(r, "Failed to parse size: %s", argv[argc-1]);
        }

        if (argc > 2)
                /* With two arguments changes the quota limit of the specified image */
                r = sd_bus_call_method(
                                bus,
                                "org.freedesktop.portable1",
                                "/org/freedesktop/portable1",
                                "org.freedesktop.portable1.Manager",
                                "SetImageLimit",
                                &error,
                                NULL,
                                "st", argv[1], limit);
        else
                /* With one argument changes the pool quota limit */
                r = sd_bus_call_method(
                                bus,
                                "org.freedesktop.portable1",
                                "/org/freedesktop/portable1",
                                "org.freedesktop.portable1.Manager",
                                "SetPoolLimit",
                                &error,
                                NULL,
                                "t", limit);

        if (r < 0)
                return log_error_errno(r, "Could not set limit: %s", bus_error_message(&error, r));

        return 0;
}

static int is_image_attached(int argc, char *argv[], void *userdata) {
        _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
        _cleanup_free_ char *image = NULL;
        const char *state;
        int r;

        r = determine_image(argv[1], true, &image);
        if (r < 0)
                return r;

        r = acquire_bus(&bus);
        if (r < 0)
                return r;

        r = sd_bus_call_method(
                        bus,
                        "org.freedesktop.portable1",
                        "/org/freedesktop/portable1",
                        "org.freedesktop.portable1.Manager",
                        "GetImageState",
                        &error,
                        &reply,
                        "s", image);
        if (r < 0)
                return log_error_errno(r, "Failed to get image state: %s", bus_error_message(&error, r));

        r = sd_bus_message_read(reply, "s", &state);
        if (r < 0)
                return r;

        if (!arg_quiet)
                puts(state);

        return streq(state, "detached");
}

static int dump_profiles(void) {
        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
        _cleanup_strv_free_ char **l = NULL;
        char **i;
        int r;

        r = acquire_bus(&bus);
        if (r < 0)
                return r;

        r = sd_bus_get_property_strv(
                        bus,
                        "org.freedesktop.portable1",
                        "/org/freedesktop/portable1",
                        "org.freedesktop.portable1.Manager",
                        "Profiles",
                        &error,
                        &l);
        if (r < 0)
                return log_error_errno(r, "Failed to acquire list of profiles: %s", bus_error_message(&error, r));

        if (arg_legend)
                log_info("Available unit profiles:");

        STRV_FOREACH(i, l) {
                fputs(*i, stdout);
                fputc('\n', stdout);
        }

        return 0;
}

static int help(int argc, char *argv[], void *userdata) {
        _cleanup_free_ char *link = NULL;
        int r;

        (void) pager_open(arg_pager_flags);

        r = terminal_urlify_man("portablectl", "1", &link);
        if (r < 0)
                return log_oom();

        printf("%s [OPTIONS...] {COMMAND} ...\n\n"
               "Attach or detach portable services from the local system.\n\n"
               "  -h --help                   Show this help\n"
               "     --version                Show package version\n"
               "     --no-pager               Do not pipe output into a pager\n"
               "     --no-legend              Do not show the headers and footers\n"
               "     --no-ask-password        Do not ask for system passwords\n"
               "  -H --host=[USER@]HOST       Operate on remote host\n"
               "  -M --machine=CONTAINER      Operate on local container\n"
               "  -q --quiet                  Suppress informational messages\n"
               "  -p --profile=PROFILE        Pick security profile for portable service\n"
               "     --copy=copy|auto|symlink Prefer copying or symlinks if possible\n"
               "     --runtime                Attach portable service until next reboot only\n"
               "     --no-reload              Don't reload the system and service manager\n"
               "     --cat                    When inspecting include unit and os-release file\n"
               "                              contents\n\n"
               "Commands:\n"
               "  list                        List available portable service images\n"
               "  attach NAME|PATH [PREFIX...]\n"
               "                              Attach the specified portable service image\n"
               "  detach NAME|PATH            Detach the specified portable service image\n"
               "  inspect NAME|PATH [PREFIX...]\n"
               "                              Show details of specified portable service image\n"
               "  is-attached NAME|PATH       Query if portable service image is attached\n"
               "  read-only NAME|PATH [BOOL]  Mark or unmark portable service image read-only\n"
               "  remove NAME|PATH...         Remove a portable service image\n"
               "  set-limit [NAME|PATH]       Set image or pool size limit (disk quota)\n"
               "\nSee the %s for details.\n"
               , program_invocation_short_name
               , link
        );

        return 0;
}

static int parse_argv(int argc, char *argv[]) {

        enum {
                ARG_VERSION = 0x100,
                ARG_NO_PAGER,
                ARG_NO_LEGEND,
                ARG_NO_ASK_PASSWORD,
                ARG_COPY,
                ARG_RUNTIME,
                ARG_NO_RELOAD,
                ARG_CAT,
        };

        static const struct option options[] = {
                { "help",            no_argument,       NULL, 'h'                 },
                { "version",         no_argument,       NULL, ARG_VERSION         },
                { "no-pager",        no_argument,       NULL, ARG_NO_PAGER        },
                { "no-legend",       no_argument,       NULL, ARG_NO_LEGEND       },
                { "no-ask-password", no_argument,       NULL, ARG_NO_ASK_PASSWORD },
                { "host",            required_argument, NULL, 'H'                 },
                { "machine",         required_argument, NULL, 'M'                 },
                { "quiet",           no_argument,       NULL, 'q'                 },
                { "profile",         required_argument, NULL, 'p'                 },
                { "copy",            required_argument, NULL, ARG_COPY            },
                { "runtime",         no_argument,       NULL, ARG_RUNTIME         },
                { "no-reload",       no_argument,       NULL, ARG_NO_RELOAD       },
                { "cat",             no_argument,       NULL, ARG_CAT             },
                {}
        };

        assert(argc >= 0);
        assert(argv);

        for (;;) {
                int c;

                c = getopt_long(argc, argv, "hH:M:qp:", options, NULL);
                if (c < 0)
                        break;

                switch (c) {

                case 'h':
                        return help(0, NULL, NULL);

                case ARG_VERSION:
                        return version();

                case ARG_NO_PAGER:
                        arg_pager_flags |= PAGER_DISABLE;
                        break;

                case ARG_NO_LEGEND:
                        arg_legend = false;
                        break;

                case ARG_NO_ASK_PASSWORD:
                        arg_ask_password = false;
                        break;

                case 'H':
                        arg_transport = BUS_TRANSPORT_REMOTE;
                        arg_host = optarg;
                        break;

                case 'M':
                        arg_transport = BUS_TRANSPORT_MACHINE;
                        arg_host = optarg;
                        break;

                case 'q':
                        arg_quiet = true;
                        break;

                case 'p':
                        if (streq(optarg, "help"))
                                return dump_profiles();

                        if (!filename_is_valid(optarg))
                                return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
                                                       "Unit profile name not valid: %s", optarg);

                        arg_profile = optarg;
                        break;

                case ARG_COPY:
                        if (streq(optarg, "auto"))
                                arg_copy_mode = NULL;
                        else if (STR_IN_SET(optarg, "copy", "symlink"))
                                arg_copy_mode = optarg;
                        else if (streq(optarg, "help")) {
                                puts("auto\n"
                                     "copy\n"
                                     "symlink");
                                return 0;
                        } else
                                return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
                                                       "Failed to parse --copy= argument: %s", optarg);

                        break;

                case ARG_RUNTIME:
                        arg_runtime = true;
                        break;

                case ARG_NO_RELOAD:
                        arg_reload = false;
                        break;

                case ARG_CAT:
                        arg_cat = true;
                        break;

                case '?':
                        return -EINVAL;

                default:
                        assert_not_reached("Unhandled option");
                }
        }

        return 1;
}

static int run(int argc, char *argv[]) {
        static const Verb verbs[] = {
                { "help",        VERB_ANY, VERB_ANY, 0,            help              },
                { "list",        VERB_ANY, 1,        VERB_DEFAULT, list_images       },
                { "attach",      2,        VERB_ANY, 0,            attach_image      },
                { "detach",      2,        2,        0,            detach_image      },
                { "inspect",     2,        VERB_ANY, 0,            inspect_image     },
                { "is-attached", 2,        2,        0,            is_image_attached },
                { "read-only",   2,        3,        0,            read_only_image   },
                { "remove",      2,        VERB_ANY, 0,            remove_image      },
                { "set-limit",   3,        3,        0,            set_limit         },
                {}
        };

        int r;

        log_parse_environment();
        log_open();

        r = parse_argv(argc, argv);
        if (r <= 0)
                return r;

        return dispatch_verb(argc, argv, verbs, NULL);
}

DEFINE_MAIN_FUNCTION(run);