src/systemctl/systemctl-list-units.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include "sd-login.h"
   4
   5 #include "bus-error.h"
   6 #include "format-table.h"
   7 #include "locale-util.h"
   8 #include "set.h"
   9 #include "sort-util.h"
  10 #include "systemctl-list-units.h"
  11 #include "systemctl-util.h"
  12 #include "systemctl.h"
  13 #include "terminal-util.h"
  14
  15 static void message_set_freep(Set **set) {
  16         set_free_with_destructor(*set, sd_bus_message_unref);
  17 }
  18
  19 static int get_unit_list_recursive(
  20                 sd_bus *bus,
  21                 char **patterns,
  22                 UnitInfo **ret_unit_infos,
  23                 Set **ret_replies,
  24                 char ***ret_machines) {
  25
  26         _cleanup_free_ UnitInfo *unit_infos = NULL;
  27         _cleanup_(message_set_freep) Set *replies;
  28         sd_bus_message *reply;
  29         int c, r;
  30
  31         assert(bus);
  32         assert(ret_replies);
  33         assert(ret_unit_infos);
  34         assert(ret_machines);
  35
  36         replies = set_new(NULL);
  37         if (!replies)
  38                 return log_oom();
  39
  40         c = get_unit_list(bus, NULL, patterns, &unit_infos, 0, &reply);
  41         if (c < 0)
  42                 return c;
  43
  44         r = set_put(replies, reply);
  45         if (r < 0) {
  46                 sd_bus_message_unref(reply);
  47                 return log_oom();
  48         }
  49
  50         if (arg_recursive) {
  51                 _cleanup_strv_free_ char **machines = NULL;
  52                 char **i;
  53
  54                 r = sd_get_machine_names(&machines);
  55                 if (r < 0)
  56                         return log_error_errno(r, "Failed to get machine names: %m");
  57
  58                 STRV_FOREACH(i, machines) {
  59                         _cleanup_(sd_bus_flush_close_unrefp) sd_bus *container = NULL;
  60                         int k;
  61
  62                         r = sd_bus_open_system_machine(&container, *i);
  63                         if (r < 0) {
  64                                 log_warning_errno(r, "Failed to connect to container %s, ignoring: %m", *i);
  65                                 continue;
  66                         }
  67
  68                         k = get_unit_list(container, *i, patterns, &unit_infos, c, &reply);
  69                         if (k < 0)
  70                                 return k;
  71
  72                         c = k;
  73
  74                         r = set_put(replies, reply);
  75                         if (r < 0) {
  76                                 sd_bus_message_unref(reply);
  77                                 return log_oom();
  78                         }
  79                 }
  80
  81                 *ret_machines = TAKE_PTR(machines);
  82         } else
  83                 *ret_machines = NULL;
  84
  85         *ret_unit_infos = TAKE_PTR(unit_infos);
  86         *ret_replies = TAKE_PTR(replies);
  87
  88         return c;
  89 }
  90
  91 static int output_units_list(const UnitInfo *unit_infos, unsigned c) {
  92         _cleanup_(table_unrefp) Table *table = NULL;
  93         unsigned job_count = 0;
  94         int r;
  95
  96         table = table_new("", "unit", "load", "active", "sub", "job", "description");
  97         if (!table)
  98                 return log_oom();
  99
 100         table_set_header(table, !arg_no_legend);
 101         if (arg_plain) {
 102                 /* Hide the 'glyph' column when --plain is requested */
 103                 r = table_hide_column_from_display(table, 0);
 104                 if (r < 0)
 105                         return log_error_errno(r, "Failed to hide column: %m");
 106         }
 107         if (arg_full)
 108                 table_set_width(table, 0);
 109
 110         (void) table_set_empty_string(table, "-");
 111
 112         for (const UnitInfo *u = unit_infos; unit_infos && (size_t) (u - unit_infos) < c; u++) {
 113                 _cleanup_free_ char *j = NULL;
 114                 const char *on_underline = "", *on_loaded = "", *on_active = "";
 115                 const char *on_circle = "", *id;
 116                 bool circle = false, underline = false;
 117
 118                 if (u + 1 < unit_infos + c &&
 119                     !streq(unit_type_suffix(u->id), unit_type_suffix((u + 1)->id))) {
 120                         on_underline = ansi_underline();
 121                         underline = true;
 122                 }
 123
 124                 if (STR_IN_SET(u->load_state, "error", "not-found", "bad-setting", "masked") && !arg_plain) {
 125                         on_circle = underline ? ansi_highlight_yellow_underline() : ansi_highlight_yellow();
 126                         circle = true;
 127                         on_loaded = underline ? ansi_highlight_red_underline() : ansi_highlight_red();
 128                 } else if (streq(u->active_state, "failed") && !arg_plain) {
 129                         on_circle = underline ? ansi_highlight_red_underline() : ansi_highlight_red();
 130                         circle = true;
 131                         on_active = underline ? ansi_highlight_red_underline() : ansi_highlight_red();
 132                 } else {
 133                         on_circle = on_underline;
 134                         on_active = on_underline;
 135                         on_loaded = on_underline;
 136                 }
 137
 138                 if (u->machine) {
 139                         j = strjoin(u->machine, ":", u->id);
 140                         if (!j)
 141                                 return log_oom();
 142
 143                         id = j;
 144                 } else
 145                         id = u->id;
 146
 147                 r = table_add_many(table,
 148                                    TABLE_STRING, circle ? special_glyph(SPECIAL_GLYPH_BLACK_CIRCLE) : " ",
 149                                    TABLE_SET_BOTH_COLORS, on_circle,
 150                                    TABLE_STRING, id,
 151                                    TABLE_SET_BOTH_COLORS, on_active,
 152                                    TABLE_STRING, u->load_state,
 153                                    TABLE_SET_BOTH_COLORS, on_loaded,
 154                                    TABLE_STRING, u->active_state,
 155                                    TABLE_SET_BOTH_COLORS, on_active,
 156                                    TABLE_STRING, u->sub_state,
 157                                    TABLE_SET_BOTH_COLORS, on_active,
 158                                    TABLE_STRING, u->job_id ? u->job_type: "",
 159                                    TABLE_SET_BOTH_COLORS, on_underline,
 160                                    TABLE_STRING, u->description,
 161                                    TABLE_SET_BOTH_COLORS, on_underline);
 162                 if (r < 0)
 163                         return table_log_add_error(r);
 164
 165                 if (u->job_id != 0)
 166                         job_count++;
 167         }
 168
 169         if (job_count == 0) {
 170                 /* There's no data in the JOB column, so let's hide it */
 171                 r = table_hide_column_from_display(table, 5);
 172                 if (r < 0)
 173                         return log_error_errno(r, "Failed to hide column: %m");
 174         }
 175
 176         r = output_table(table);
 177         if (r < 0)
 178                 return r;
 179
 180         if (!arg_no_legend) {
 181                 const char *on, *off;
 182                 size_t records = table_get_rows(table) - 1;
 183
 184                 if (records > 0) {
 185                         puts("\n"
 186                              "LOAD   = Reflects whether the unit definition was properly loaded.\n"
 187                              "ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n"
 188                              "SUB    = The low-level unit activation state, values depend on unit type.");
 189                         if (job_count > 0)
 190                                 puts("JOB    = Pending job for the unit.\n");
 191                         on = ansi_highlight();
 192                         off = ansi_normal();
 193                 } else {
 194                         on = ansi_highlight_red();
 195                         off = ansi_normal();
 196                 }
 197
 198                 if (arg_all || strv_contains(arg_states, "inactive"))
 199                         printf("%s%zu loaded units listed.%s\n"
 200                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
 201                                on, records, off);
 202                 else if (!arg_states)
 203                         printf("%s%zu loaded units listed.%s Pass --all to see loaded but inactive units, too.\n"
 204                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
 205                                on, records, off);
 206                 else
 207                         printf("%zu loaded units listed.\n", records);
 208         }
 209
 210         return 0;
 211 }
 212
 213 int list_units(int argc, char *argv[], void *userdata) {
 214         _cleanup_free_ UnitInfo *unit_infos = NULL;
 215         _cleanup_(message_set_freep) Set *replies = NULL;
 216         _cleanup_strv_free_ char **machines = NULL;
 217         sd_bus *bus;
 218         int r;
 219
 220         r = acquire_bus(BUS_MANAGER, &bus);
 221         if (r < 0)
 222                 return r;
 223
 224         (void) pager_open(arg_pager_flags);
 225
 226         if (arg_with_dependencies) {
 227                 _cleanup_strv_free_ char **names = NULL;
 228
 229                 r = append_unit_dependencies(bus, strv_skip(argv, 1), &names);
 230                 if (r < 0)
 231                         return r;
 232
 233                 r = get_unit_list_recursive(bus, names, &unit_infos, &replies, &machines);
 234                 if (r < 0)
 235                         return r;
 236         } else {
 237                 r = get_unit_list_recursive(bus, strv_skip(argv, 1), &unit_infos, &replies, &machines);
 238                 if (r < 0)
 239                         return r;
 240         }
 241
 242         typesafe_qsort(unit_infos, r, unit_info_compare);
 243         return output_units_list(unit_infos, r);
 244 }
 245
 246 static int get_triggered_units(
 247                 sd_bus *bus,
 248                 const char* path,
 249                 char*** ret) {
 250
 251         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 252         int r;
 253
 254         assert(bus);
 255         assert(path);
 256         assert(ret);
 257
 258         r = sd_bus_get_property_strv(
 259                         bus,
 260                         "org.freedesktop.systemd1",
 261                         path,
 262                         "org.freedesktop.systemd1.Unit",
 263                         "Triggers",
 264                         &error,
 265                         ret);
 266         if (r < 0)
 267                 return log_error_errno(r, "Failed to determine triggers: %s", bus_error_message(&error, r));
 268
 269         return 0;
 270 }
 271
 272 static int get_listening(
 273                 sd_bus *bus,
 274                 const char* unit_path,
 275                 char*** listening) {
 276
 277         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 278         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 279         const char *type, *path;
 280         int r, n = 0;
 281
 282         r = sd_bus_get_property(
 283                         bus,
 284                         "org.freedesktop.systemd1",
 285                         unit_path,
 286                         "org.freedesktop.systemd1.Socket",
 287                         "Listen",
 288                         &error,
 289                         &reply,
 290                         "a(ss)");
 291         if (r < 0)
 292                 return log_error_errno(r, "Failed to get list of listening sockets: %s", bus_error_message(&error, r));
 293
 294         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
 295         if (r < 0)
 296                 return bus_log_parse_error(r);
 297
 298         while ((r = sd_bus_message_read(reply, "(ss)", &type, &path)) > 0) {
 299
 300                 r = strv_extend(listening, type);
 301                 if (r < 0)
 302                         return log_oom();
 303
 304                 r = strv_extend(listening, path);
 305                 if (r < 0)
 306                         return log_oom();
 307
 308                 n++;
 309         }
 310         if (r < 0)
 311                 return bus_log_parse_error(r);
 312
 313         r = sd_bus_message_exit_container(reply);
 314         if (r < 0)
 315                 return bus_log_parse_error(r);
 316
 317         return n;
 318 }
 319
 320 struct socket_info {
 321         const char *machine;
 322         const char* id;
 323
 324         char* type;
 325         char* path;
 326
 327         /* Note: triggered is a list here, although it almost certainly will always be one
 328          * unit. Nevertheless, dbus API allows for multiple values, so let's follow that. */
 329         char** triggered;
 330
 331         /* The strv above is shared. free is set only in the first one. */
 332         bool own_triggered;
 333 };
 334
 335 static int socket_info_compare(const struct socket_info *a, const struct socket_info *b) {
 336         int r;
 337
 338         assert(a);
 339         assert(b);
 340
 341         r = strcasecmp_ptr(a->machine, b->machine);
 342         if (r != 0)
 343                 return r;
 344
 345         r = strcmp(a->path, b->path);
 346         if (r != 0)
 347                 return r;
 348
 349         return strcmp(a->type, b->type);
 350 }
 351
 352 static int output_sockets_list(struct socket_info *socket_infos, unsigned cs) {
 353         _cleanup_(table_unrefp) Table *table = NULL;
 354         const char *on, *off;
 355         int r;
 356
 357         table = table_new("listen", "type", "unit", "activates");
 358         if (!table)
 359                 return log_oom();
 360
 361         if (!arg_show_types) {
 362                 /* Hide the second (TYPE) column */
 363                 r = table_set_display(table, (size_t) 0, (size_t) 2, (size_t) 3, (size_t) -1);
 364                 if (r < 0)
 365                         return log_error_errno(r, "Failed to set columns to display: %m");
 366         }
 367
 368         table_set_header(table, !arg_no_legend);
 369         if (arg_full)
 370                 table_set_width(table, 0);
 371
 372         (void) table_set_empty_string(table, "-");
 373
 374         if (cs) {
 375                 for (struct socket_info *s = socket_infos; s < socket_infos + cs; s++) {
 376                         _cleanup_free_ char *j = NULL;
 377                         const char *path;
 378
 379                         if (s->machine) {
 380                                 j = strjoin(s->machine, ":", s->path);
 381                                 if (!j)
 382                                         return log_oom();
 383                                 path = j;
 384                         } else
 385                                 path = s->path;
 386
 387                         r = table_add_many(table,
 388                                            TABLE_STRING, path,
 389                                            TABLE_STRING, s->type,
 390                                            TABLE_STRING, s->id);
 391                         if (r < 0)
 392                                 return table_log_add_error(r);
 393
 394                         if (strv_isempty(s->triggered))
 395                                 r = table_add_cell(table, NULL, TABLE_EMPTY, NULL);
 396                         else if (strv_length(s->triggered) == 1)
 397                                 r = table_add_cell(table, NULL, TABLE_STRING, s->triggered[0]);
 398                         else
 399                                 /* This should never happen, currently our socket units can only trigger a
 400                                  * single unit. But let's handle this anyway, who knows what the future
 401                                  * brings? */
 402                                 r = table_add_cell(table, NULL, TABLE_STRV, s->triggered);
 403                         if (r < 0)
 404                                 return table_log_add_error(r);
 405
 406                 }
 407
 408                 on = ansi_highlight();
 409                 off = ansi_normal();
 410         } else {
 411                 on = ansi_highlight_red();
 412                 off = ansi_normal();
 413         }
 414
 415         r = output_table(table);
 416         if (r < 0)
 417                 return r;
 418
 419         if (!arg_no_legend) {
 420                 printf("\n%s%u sockets listed.%s\n", on, cs, off);
 421                 if (!arg_all)
 422                         printf("Pass --all to see loaded but inactive sockets, too.\n");
 423         }
 424
 425         return 0;
 426 }
 427
 428 int list_sockets(int argc, char *argv[], void *userdata) {
 429         _cleanup_(message_set_freep) Set *replies = NULL;
 430         _cleanup_strv_free_ char **machines = NULL;
 431         _cleanup_strv_free_ char **sockets_with_suffix = NULL;
 432         _cleanup_free_ UnitInfo *unit_infos = NULL;
 433         _cleanup_free_ struct socket_info *socket_infos = NULL;
 434         unsigned cs = 0;
 435         size_t size = 0;
 436         int r, n;
 437         sd_bus *bus;
 438
 439         r = acquire_bus(BUS_MANAGER, &bus);
 440         if (r < 0)
 441                 return r;
 442
 443         (void) pager_open(arg_pager_flags);
 444
 445         r = expand_unit_names(bus, strv_skip(argv, 1), ".socket", &sockets_with_suffix, NULL);
 446         if (r < 0)
 447                 return r;
 448
 449         if (argc == 1 || sockets_with_suffix) {
 450                 n = get_unit_list_recursive(bus, sockets_with_suffix, &unit_infos, &replies, &machines);
 451                 if (n < 0)
 452                         return n;
 453
 454                 for (const UnitInfo *u = unit_infos; u < unit_infos + n; u++) {
 455                         _cleanup_strv_free_ char **listening = NULL, **triggered = NULL;
 456                         int c;
 457
 458                         if (!endswith(u->id, ".socket"))
 459                                 continue;
 460
 461                         r = get_triggered_units(bus, u->unit_path, &triggered);
 462                         if (r < 0)
 463                                 goto cleanup;
 464
 465                         c = get_listening(bus, u->unit_path, &listening);
 466                         if (c < 0) {
 467                                 r = c;
 468                                 goto cleanup;
 469                         }
 470
 471                         if (!GREEDY_REALLOC(socket_infos, size, cs + c)) {
 472                                 r = log_oom();
 473                                 goto cleanup;
 474                         }
 475
 476                         for (int i = 0; i < c; i++)
 477                                 socket_infos[cs + i] = (struct socket_info) {
 478                                         .machine = u->machine,
 479                                         .id = u->id,
 480                                         .type = listening[i*2],
 481                                         .path = listening[i*2 + 1],
 482                                         .triggered = triggered,
 483                                         .own_triggered = i==0,
 484                                 };
 485
 486                         /* from this point on we will cleanup those socket_infos */
 487                         cs += c;
 488                         free(listening);
 489                         listening = triggered = NULL; /* avoid cleanup */
 490                 }
 491
 492                 typesafe_qsort(socket_infos, cs, socket_info_compare);
 493         }
 494
 495         output_sockets_list(socket_infos, cs);
 496
 497  cleanup:
 498         assert(cs == 0 || socket_infos);
 499         for (struct socket_info *s = socket_infos; s < socket_infos + cs; s++) {
 500                 free(s->type);
 501                 free(s->path);
 502                 if (s->own_triggered)
 503                         strv_free(s->triggered);
 504         }
 505
 506         return r;
 507 }
 508
 509 static int get_next_elapse(
 510                 sd_bus *bus,
 511                 const char *path,
 512                 dual_timestamp *next) {
 513
 514         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 515         dual_timestamp t;
 516         int r;
 517
 518         assert(bus);
 519         assert(path);
 520         assert(next);
 521
 522         r = sd_bus_get_property_trivial(
 523                         bus,
 524                         "org.freedesktop.systemd1",
 525                         path,
 526                         "org.freedesktop.systemd1.Timer",
 527                         "NextElapseUSecMonotonic",
 528                         &error,
 529                         't',
 530                         &t.monotonic);
 531         if (r < 0)
 532                 return log_error_errno(r, "Failed to get next elapse time: %s", bus_error_message(&error, r));
 533
 534         r = sd_bus_get_property_trivial(
 535                         bus,
 536                         "org.freedesktop.systemd1",
 537                         path,
 538                         "org.freedesktop.systemd1.Timer",
 539                         "NextElapseUSecRealtime",
 540                         &error,
 541                         't',
 542                         &t.realtime);
 543         if (r < 0)
 544                 return log_error_errno(r, "Failed to get next elapse time: %s", bus_error_message(&error, r));
 545
 546         *next = t;
 547         return 0;
 548 }
 549
 550 static int get_last_trigger(
 551                 sd_bus *bus,
 552                 const char *path,
 553                 usec_t *last) {
 554
 555         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 556         int r;
 557
 558         assert(bus);
 559         assert(path);
 560         assert(last);
 561
 562         r = sd_bus_get_property_trivial(
 563                         bus,
 564                         "org.freedesktop.systemd1",
 565                         path,
 566                         "org.freedesktop.systemd1.Timer",
 567                         "LastTriggerUSec",
 568                         &error,
 569                         't',
 570                         last);
 571         if (r < 0)
 572                 return log_error_errno(r, "Failed to get last trigger time: %s", bus_error_message(&error, r));
 573
 574         return 0;
 575 }
 576
 577 struct timer_info {
 578         const char* machine;
 579         const char* id;
 580         usec_t next_elapse;
 581         usec_t last_trigger;
 582         char** triggered;
 583 };
 584
 585 static int timer_info_compare(const struct timer_info *a, const struct timer_info *b) {
 586         int r;
 587
 588         assert(a);
 589         assert(b);
 590
 591         r = strcasecmp_ptr(a->machine, b->machine);
 592         if (r != 0)
 593                 return r;
 594
 595         r = CMP(a->next_elapse, b->next_elapse);
 596         if (r != 0)
 597                 return r;
 598
 599         return strcmp(a->id, b->id);
 600 }
 601
 602 static int output_timers_list(struct timer_info *timer_infos, unsigned n) {
 603         _cleanup_(table_unrefp) Table *table = NULL;
 604         const char *on, *off;
 605         int r;
 606
 607         assert(timer_infos || n == 0);
 608
 609         table = table_new("next", "left", "last", "passed", "unit", "activates");
 610         if (!table)
 611                 return log_oom();
 612
 613         table_set_header(table, !arg_no_legend);
 614         if (arg_full)
 615                 table_set_width(table, 0);
 616
 617         (void) table_set_empty_string(table, "-");
 618
 619         for (struct timer_info *t = timer_infos; t < timer_infos + n; t++) {
 620                 _cleanup_free_ char *j = NULL, *activates = NULL;
 621                 const char *unit;
 622
 623                 if (t->machine) {
 624                         j = strjoin(t->machine, ":", t->id);
 625                         if (!j)
 626                                 return log_oom();
 627                         unit = j;
 628                 } else
 629                         unit = t->id;
 630
 631                 activates = strv_join(t->triggered, ", ");
 632                 if (!activates)
 633                         return log_oom();
 634
 635                 r = table_add_many(table,
 636                                    TABLE_TIMESTAMP, t->next_elapse,
 637                                    TABLE_TIMESTAMP_RELATIVE, t->next_elapse,
 638                                    TABLE_TIMESTAMP, t->last_trigger,
 639                                    TABLE_TIMESTAMP_RELATIVE, t->last_trigger,
 640                                    TABLE_STRING, unit,
 641                                    TABLE_STRING, activates);
 642                 if (r < 0)
 643                         return table_log_add_error(r);
 644         }
 645
 646         if (n > 0) {
 647                 on = ansi_highlight();
 648                 off = ansi_normal();
 649         } else {
 650                 on = ansi_highlight_red();
 651                 off = ansi_normal();
 652         }
 653
 654         r = output_table(table);
 655         if (r < 0)
 656                 return r;
 657
 658         if (!arg_no_legend) {
 659                 printf("\n%s%u timers listed.%s\n", on, n, off);
 660                 if (!arg_all)
 661                         printf("Pass --all to see loaded but inactive timers, too.\n");
 662         }
 663
 664         return 0;
 665 }
 666
 667 usec_t calc_next_elapse(dual_timestamp *nw, dual_timestamp *next) {
 668         usec_t next_elapse;
 669
 670         assert(nw);
 671         assert(next);
 672
 673         if (timestamp_is_set(next->monotonic)) {
 674                 usec_t converted;
 675
 676                 if (next->monotonic > nw->monotonic)
 677                         converted = nw->realtime + (next->monotonic - nw->monotonic);
 678                 else
 679                         converted = nw->realtime - (nw->monotonic - next->monotonic);
 680
 681                 if (timestamp_is_set(next->realtime))
 682                         next_elapse = MIN(converted, next->realtime);
 683                 else
 684                         next_elapse = converted;
 685
 686         } else
 687                 next_elapse = next->realtime;
 688
 689         return next_elapse;
 690 }
 691
 692 int list_timers(int argc, char *argv[], void *userdata) {
 693         _cleanup_(message_set_freep) Set *replies = NULL;
 694         _cleanup_strv_free_ char **machines = NULL;
 695         _cleanup_strv_free_ char **timers_with_suffix = NULL;
 696         _cleanup_free_ struct timer_info *timer_infos = NULL;
 697         _cleanup_free_ UnitInfo *unit_infos = NULL;
 698         size_t size = 0;
 699         int n, c = 0;
 700         dual_timestamp nw;
 701         sd_bus *bus;
 702         int r;
 703
 704         r = acquire_bus(BUS_MANAGER, &bus);
 705         if (r < 0)
 706                 return r;
 707
 708         (void) pager_open(arg_pager_flags);
 709
 710         r = expand_unit_names(bus, strv_skip(argv, 1), ".timer", &timers_with_suffix, NULL);
 711         if (r < 0)
 712                 return r;
 713
 714         if (argc == 1 || timers_with_suffix) {
 715                 n = get_unit_list_recursive(bus, timers_with_suffix, &unit_infos, &replies, &machines);
 716                 if (n < 0)
 717                         return n;
 718
 719                 dual_timestamp_get(&nw);
 720
 721                 for (const UnitInfo *u = unit_infos; u < unit_infos + n; u++) {
 722                         _cleanup_strv_free_ char **triggered = NULL;
 723                         dual_timestamp next = DUAL_TIMESTAMP_NULL;
 724                         usec_t m, last = 0;
 725
 726                         if (!endswith(u->id, ".timer"))
 727                                 continue;
 728
 729                         r = get_triggered_units(bus, u->unit_path, &triggered);
 730                         if (r < 0)
 731                                 goto cleanup;
 732
 733                         r = get_next_elapse(bus, u->unit_path, &next);
 734                         if (r < 0)
 735                                 goto cleanup;
 736
 737                         get_last_trigger(bus, u->unit_path, &last);
 738
 739                         if (!GREEDY_REALLOC(timer_infos, size, c+1)) {
 740                                 r = log_oom();
 741                                 goto cleanup;
 742                         }
 743
 744                         m = calc_next_elapse(&nw, &next);
 745
 746                         timer_infos[c++] = (struct timer_info) {
 747                                 .machine = u->machine,
 748                                 .id = u->id,
 749                                 .next_elapse = m,
 750                                 .last_trigger = last,
 751                                 .triggered = TAKE_PTR(triggered),
 752                         };
 753                 }
 754
 755                 typesafe_qsort(timer_infos, c, timer_info_compare);
 756         }
 757
 758         output_timers_list(timer_infos, c);
 759
 760  cleanup:
 761         for (struct timer_info *t = timer_infos; t < timer_infos + c; t++)
 762                 strv_free(t->triggered);
 763
 764         return r;
 765 }