src/shared/bus-util.c

   1 /***
   2   This file is part of systemd.
   3
   4   Copyright 2013 Lennart Poettering
   5
   6   systemd is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU Lesser General Public License as published by
   8   the Free Software Foundation; either version 2.1 of the License, or
   9   (at your option) any later version.
  10
  11   systemd is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   Lesser General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  18 ***/
  19
  20 #include <errno.h>
  21 #include <fcntl.h>
  22 #include <inttypes.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <sys/ioctl.h>
  27 #include <sys/resource.h>
  28 #include <sys/socket.h>
  29 #include <unistd.h>
  30
  31 #include "sd-bus-protocol.h"
  32 #include "sd-bus.h"
  33 #include "sd-daemon.h"
  34 #include "sd-event.h"
  35 #include "sd-id128.h"
  36
  37 #include "alloc-util.h"
  38 #include "bus-internal.h"
  39 #include "bus-label.h"
  40 #include "bus-message.h"
  41 #include "bus-util.h"
  42 #include "def.h"
  43 #include "escape.h"
  44 #include "fd-util.h"
  45 #include "missing.h"
  46 #include "nsflags.h"
  47 #include "parse-util.h"
  48 #include "proc-cmdline.h"
  49 //#include "rlimit-util.h"
  50 #include "stdio-util.h"
  51 #include "strv.h"
  52 #include "user-util.h"
  53
  54 #if 0 /// UNNEEDED by elogind
  55 static int name_owner_change_callback(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
  56         sd_event *e = userdata;
  57
  58         assert(m);
  59         assert(e);
  60
  61         sd_bus_close(sd_bus_message_get_bus(m));
  62         sd_event_exit(e, 0);
  63
  64         return 1;
  65 }
  66
  67 int bus_async_unregister_and_exit(sd_event *e, sd_bus *bus, const char *name) {
  68         _cleanup_free_ char *match = NULL;
  69         const char *unique;
  70         int r;
  71
  72         assert(e);
  73         assert(bus);
  74         assert(name);
  75
  76         /* We unregister the name here and then wait for the
  77          * NameOwnerChanged signal for this event to arrive before we
  78          * quit. We do this in order to make sure that any queued
  79          * requests are still processed before we really exit. */
  80
  81         r = sd_bus_get_unique_name(bus, &unique);
  82         if (r < 0)
  83                 return r;
  84
  85         r = asprintf(&match,
  86                      "sender='org.freedesktop.DBus',"
  87                      "type='signal',"
  88                      "interface='org.freedesktop.DBus',"
  89                      "member='NameOwnerChanged',"
  90                      "path='/org/freedesktop/DBus',"
  91                      "arg0='%s',"
  92                      "arg1='%s',"
  93                      "arg2=''", name, unique);
  94         if (r < 0)
  95                 return -ENOMEM;
  96
  97         r = sd_bus_add_match(bus, NULL, match, name_owner_change_callback, e);
  98         if (r < 0)
  99                 return r;
 100
 101         r = sd_bus_release_name(bus, name);
 102         if (r < 0)
 103                 return r;
 104
 105         return 0;
 106 }
 107
 108 int bus_event_loop_with_idle(
 109                 sd_event *e,
 110                 sd_bus *bus,
 111                 const char *name,
 112                 usec_t timeout,
 113                 check_idle_t check_idle,
 114                 void *userdata) {
 115         bool exiting = false;
 116         int r, code;
 117
 118         assert(e);
 119         assert(bus);
 120         assert(name);
 121
 122         for (;;) {
 123                 bool idle;
 124
 125                 r = sd_event_get_state(e);
 126                 if (r < 0)
 127                         return r;
 128                 if (r == SD_EVENT_FINISHED)
 129                         break;
 130
 131                 if (check_idle)
 132                         idle = check_idle(userdata);
 133                 else
 134                         idle = true;
 135
 136                 r = sd_event_run(e, exiting || !idle ? (uint64_t) -1 : timeout);
 137                 if (r < 0)
 138                         return r;
 139
 140                 if (r == 0 && !exiting && idle) {
 141
 142                         r = sd_bus_try_close(bus);
 143                         if (r == -EBUSY)
 144                                 continue;
 145
 146                         /* Fallback for dbus1 connections: we
 147                          * unregister the name and wait for the
 148                          * response to come through for it */
 149                         if (r == -EOPNOTSUPP) {
 150
 151                                 /* Inform the service manager that we
 152                                  * are going down, so that it will
 153                                  * queue all further start requests,
 154                                  * instead of assuming we are already
 155                                  * running. */
 156                                 sd_notify(false, "STOPPING=1");
 157
 158                                 r = bus_async_unregister_and_exit(e, bus, name);
 159                                 if (r < 0)
 160                                         return r;
 161
 162                                 exiting = true;
 163                                 continue;
 164                         }
 165
 166                         if (r < 0)
 167                                 return r;
 168
 169                         sd_event_exit(e, 0);
 170                         break;
 171                 }
 172         }
 173
 174         r = sd_event_get_exit_code(e, &code);
 175         if (r < 0)
 176                 return r;
 177
 178         return code;
 179 }
 180 #endif // 0
 181
 182 int bus_name_has_owner(sd_bus *c, const char *name, sd_bus_error *error) {
 183         _cleanup_(sd_bus_message_unrefp) sd_bus_message *rep = NULL;
 184         int r, has_owner = 0;
 185
 186         assert(c);
 187         assert(name);
 188
 189         r = sd_bus_call_method(c,
 190                                "org.freedesktop.DBus",
 191                                "/org/freedesktop/dbus",
 192                                "org.freedesktop.DBus",
 193                                "NameHasOwner",
 194                                error,
 195                                &rep,
 196                                "s",
 197                                name);
 198         if (r < 0)
 199                 return r;
 200
 201         r = sd_bus_message_read_basic(rep, 'b', &has_owner);
 202         if (r < 0)
 203                 return sd_bus_error_set_errno(error, r);
 204
 205         return has_owner;
 206 }
 207
 208 static int check_good_user(sd_bus_message *m, uid_t good_user) {
 209         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 210         uid_t sender_uid;
 211         int r;
 212
 213         assert(m);
 214
 215         if (good_user == UID_INVALID)
 216                 return 0;
 217
 218         r = sd_bus_query_sender_creds(m, SD_BUS_CREDS_EUID, &creds);
 219         if (r < 0)
 220                 return r;
 221
 222         /* Don't trust augmented credentials for authorization */
 223         assert_return((sd_bus_creds_get_augmented_mask(creds) & SD_BUS_CREDS_EUID) == 0, -EPERM);
 224
 225         r = sd_bus_creds_get_euid(creds, &sender_uid);
 226         if (r < 0)
 227                 return r;
 228
 229         return sender_uid == good_user;
 230 }
 231
 232 int bus_test_polkit(
 233                 sd_bus_message *call,
 234                 int capability,
 235                 const char *action,
 236                 const char **details,
 237                 uid_t good_user,
 238                 bool *_challenge,
 239                 sd_bus_error *e) {
 240
 241         int r;
 242
 243         assert(call);
 244         assert(action);
 245
 246         /* Tests non-interactively! */
 247
 248         r = check_good_user(call, good_user);
 249         if (r != 0)
 250                 return r;
 251
 252         r = sd_bus_query_sender_privilege(call, capability);
 253         if (r < 0)
 254                 return r;
 255         else if (r > 0)
 256                 return 1;
 257 #ifdef ENABLE_POLKIT
 258         else {
 259                 _cleanup_(sd_bus_message_unrefp) sd_bus_message *request = NULL;
 260                 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 261                 int authorized = false, challenge = false;
 262                 const char *sender, **k, **v;
 263
 264                 sender = sd_bus_message_get_sender(call);
 265                 if (!sender)
 266                         return -EBADMSG;
 267
 268                 r = sd_bus_message_new_method_call(
 269                                 call->bus,
 270                                 &request,
 271                                 "org.freedesktop.PolicyKit1",
 272                                 "/org/freedesktop/PolicyKit1/Authority",
 273                                 "org.freedesktop.PolicyKit1.Authority",
 274                                 "CheckAuthorization");
 275                 if (r < 0)
 276                         return r;
 277
 278                 r = sd_bus_message_append(
 279                                 request,
 280                                 "(sa{sv})s",
 281                                 "system-bus-name", 1, "name", "s", sender,
 282                                 action);
 283                 if (r < 0)
 284                         return r;
 285
 286                 r = sd_bus_message_open_container(request, 'a', "{ss}");
 287                 if (r < 0)
 288                         return r;
 289
 290                 STRV_FOREACH_PAIR(k, v, details) {
 291                         r = sd_bus_message_append(request, "{ss}", *k, *v);
 292                         if (r < 0)
 293                                 return r;
 294                 }
 295
 296                 r = sd_bus_message_close_container(request);
 297                 if (r < 0)
 298                         return r;
 299
 300                 r = sd_bus_message_append(request, "us", 0, NULL);
 301                 if (r < 0)
 302                         return r;
 303
 304                 r = sd_bus_call(call->bus, request, 0, e, &reply);
 305                 if (r < 0) {
 306                         /* Treat no PK available as access denied */
 307                         if (sd_bus_error_has_name(e, SD_BUS_ERROR_SERVICE_UNKNOWN)) {
 308                                 sd_bus_error_free(e);
 309                                 return -EACCES;
 310                         }
 311
 312                         return r;
 313                 }
 314
 315                 r = sd_bus_message_enter_container(reply, 'r', "bba{ss}");
 316                 if (r < 0)
 317                         return r;
 318
 319                 r = sd_bus_message_read(reply, "bb", &authorized, &challenge);
 320                 if (r < 0)
 321                         return r;
 322
 323                 if (authorized)
 324                         return 1;
 325
 326                 if (_challenge) {
 327                         *_challenge = challenge;
 328                         return 0;
 329                 }
 330         }
 331 #endif
 332
 333         return -EACCES;
 334 }
 335
 336 #ifdef ENABLE_POLKIT
 337
 338 typedef struct AsyncPolkitQuery {
 339         sd_bus_message *request, *reply;
 340         sd_bus_message_handler_t callback;
 341         void *userdata;
 342         sd_bus_slot *slot;
 343         Hashmap *registry;
 344 } AsyncPolkitQuery;
 345
 346 static void async_polkit_query_free(AsyncPolkitQuery *q) {
 347
 348         if (!q)
 349                 return;
 350
 351         sd_bus_slot_unref(q->slot);
 352
 353         if (q->registry && q->request)
 354                 hashmap_remove(q->registry, q->request);
 355
 356         sd_bus_message_unref(q->request);
 357         sd_bus_message_unref(q->reply);
 358
 359         free(q);
 360 }
 361
 362 static int async_polkit_callback(sd_bus_message *reply, void *userdata, sd_bus_error *error) {
 363         _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL;
 364         AsyncPolkitQuery *q = userdata;
 365         int r;
 366
 367         assert(reply);
 368         assert(q);
 369
 370         q->slot = sd_bus_slot_unref(q->slot);
 371         q->reply = sd_bus_message_ref(reply);
 372
 373         r = sd_bus_message_rewind(q->request, true);
 374         if (r < 0) {
 375                 r = sd_bus_reply_method_errno(q->request, r, NULL);
 376                 goto finish;
 377         }
 378
 379         r = q->callback(q->request, q->userdata, &error_buffer);
 380         r = bus_maybe_reply_error(q->request, r, &error_buffer);
 381
 382 finish:
 383         async_polkit_query_free(q);
 384
 385         return r;
 386 }
 387
 388 #endif
 389
 390 int bus_verify_polkit_async(
 391                 sd_bus_message *call,
 392                 int capability,
 393                 const char *action,
 394                 const char **details,
 395                 bool interactive,
 396                 uid_t good_user,
 397                 Hashmap **registry,
 398                 sd_bus_error *error) {
 399
 400 #ifdef ENABLE_POLKIT
 401         _cleanup_(sd_bus_message_unrefp) sd_bus_message *pk = NULL;
 402         AsyncPolkitQuery *q;
 403         const char *sender, **k, **v;
 404         sd_bus_message_handler_t callback;
 405         void *userdata;
 406         int c;
 407 #endif
 408         int r;
 409
 410         assert(call);
 411         assert(action);
 412         assert(registry);
 413
 414         r = check_good_user(call, good_user);
 415         if (r != 0)
 416                 return r;
 417
 418 #ifdef ENABLE_POLKIT
 419         q = hashmap_get(*registry, call);
 420         if (q) {
 421                 int authorized, challenge;
 422
 423                 /* This is the second invocation of this function, and
 424                  * there's already a response from polkit, let's
 425                  * process it */
 426                 assert(q->reply);
 427
 428                 if (sd_bus_message_is_method_error(q->reply, NULL)) {
 429                         const sd_bus_error *e;
 430
 431                         /* Copy error from polkit reply */
 432                         e = sd_bus_message_get_error(q->reply);
 433                         sd_bus_error_copy(error, e);
 434
 435                         /* Treat no PK available as access denied */
 436                         if (sd_bus_error_has_name(e, SD_BUS_ERROR_SERVICE_UNKNOWN))
 437                                 return -EACCES;
 438
 439                         return -sd_bus_error_get_errno(e);
 440                 }
 441
 442                 r = sd_bus_message_enter_container(q->reply, 'r', "bba{ss}");
 443                 if (r >= 0)
 444                         r = sd_bus_message_read(q->reply, "bb", &authorized, &challenge);
 445
 446                 if (r < 0)
 447                         return r;
 448
 449                 if (authorized)
 450                         return 1;
 451
 452                 if (challenge)
 453                         return sd_bus_error_set(error, SD_BUS_ERROR_INTERACTIVE_AUTHORIZATION_REQUIRED, "Interactive authentication required.");
 454
 455                 return -EACCES;
 456         }
 457 #endif
 458
 459         r = sd_bus_query_sender_privilege(call, capability);
 460         if (r < 0)
 461                 return r;
 462         else if (r > 0)
 463                 return 1;
 464
 465 #ifdef ENABLE_POLKIT
 466         if (sd_bus_get_current_message(call->bus) != call)
 467                 return -EINVAL;
 468
 469         callback = sd_bus_get_current_handler(call->bus);
 470         if (!callback)
 471                 return -EINVAL;
 472
 473         userdata = sd_bus_get_current_userdata(call->bus);
 474
 475         sender = sd_bus_message_get_sender(call);
 476         if (!sender)
 477                 return -EBADMSG;
 478
 479         c = sd_bus_message_get_allow_interactive_authorization(call);
 480         if (c < 0)
 481                 return c;
 482         if (c > 0)
 483                 interactive = true;
 484
 485         r = hashmap_ensure_allocated(registry, NULL);
 486         if (r < 0)
 487                 return r;
 488
 489         r = sd_bus_message_new_method_call(
 490                         call->bus,
 491                         &pk,
 492                         "org.freedesktop.PolicyKit1",
 493                         "/org/freedesktop/PolicyKit1/Authority",
 494                         "org.freedesktop.PolicyKit1.Authority",
 495                         "CheckAuthorization");
 496         if (r < 0)
 497                 return r;
 498
 499         r = sd_bus_message_append(
 500                         pk,
 501                         "(sa{sv})s",
 502                         "system-bus-name", 1, "name", "s", sender,
 503                         action);
 504         if (r < 0)
 505                 return r;
 506
 507         r = sd_bus_message_open_container(pk, 'a', "{ss}");
 508         if (r < 0)
 509                 return r;
 510
 511         STRV_FOREACH_PAIR(k, v, details) {
 512                 r = sd_bus_message_append(pk, "{ss}", *k, *v);
 513                 if (r < 0)
 514                         return r;
 515         }
 516
 517         r = sd_bus_message_close_container(pk);
 518         if (r < 0)
 519                 return r;
 520
 521         r = sd_bus_message_append(pk, "us", !!interactive, NULL);
 522         if (r < 0)
 523                 return r;
 524
 525         q = new0(AsyncPolkitQuery, 1);
 526         if (!q)
 527                 return -ENOMEM;
 528
 529         q->request = sd_bus_message_ref(call);
 530         q->callback = callback;
 531         q->userdata = userdata;
 532
 533         r = hashmap_put(*registry, call, q);
 534         if (r < 0) {
 535                 async_polkit_query_free(q);
 536                 return r;
 537         }
 538
 539         q->registry = *registry;
 540
 541         r = sd_bus_call_async(call->bus, &q->slot, pk, async_polkit_callback, q, 0);
 542         if (r < 0) {
 543                 async_polkit_query_free(q);
 544                 return r;
 545         }
 546
 547         return 0;
 548 #endif
 549
 550         return -EACCES;
 551 }
 552
 553 void bus_verify_polkit_async_registry_free(Hashmap *registry) {
 554 #ifdef ENABLE_POLKIT
 555         AsyncPolkitQuery *q;
 556
 557         while ((q = hashmap_steal_first(registry)))
 558                 async_polkit_query_free(q);
 559
 560         hashmap_free(registry);
 561 #endif
 562 }
 563
 564 #if 0 /// UNNEEDED by elogind
 565 int bus_check_peercred(sd_bus *c) {
 566         struct ucred ucred;
 567         socklen_t l;
 568         int fd;
 569
 570         assert(c);
 571
 572         fd = sd_bus_get_fd(c);
 573         if (fd < 0)
 574                 return fd;
 575
 576         l = sizeof(struct ucred);
 577         if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0)
 578                 return -errno;
 579
 580         if (l != sizeof(struct ucred))
 581                 return -E2BIG;
 582
 583         if (ucred.uid != 0 && ucred.uid != geteuid())
 584                 return -EPERM;
 585
 586         return 1;
 587 }
 588
 589 int bus_connect_system_systemd(sd_bus **_bus) {
 590         _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL;
 591         int r;
 592
 593         assert(_bus);
 594
 595         if (geteuid() != 0)
 596                 return sd_bus_default_system(_bus);
 597
 598         /* If we are root and kdbus is not available, then let's talk
 599          * directly to the system instance, instead of going via the
 600          * bus */
 601
 602         r = sd_bus_new(&bus);
 603         if (r < 0)
 604                 return r;
 605
 606         r = sd_bus_set_address(bus, KERNEL_SYSTEM_BUS_ADDRESS);
 607         if (r < 0)
 608                 return r;
 609
 610         bus->bus_client = true;
 611
 612         r = sd_bus_start(bus);
 613         if (r >= 0) {
 614                 *_bus = bus;
 615                 bus = NULL;
 616                 return 0;
 617         }
 618
 619         bus = sd_bus_unref(bus);
 620
 621         r = sd_bus_new(&bus);
 622         if (r < 0)
 623                 return r;
 624
 625         r = sd_bus_set_address(bus, "unix:path=/run/systemd/private");
 626         if (r < 0)
 627                 return r;
 628
 629         r = sd_bus_start(bus);
 630         if (r < 0)
 631                 return sd_bus_default_system(_bus);
 632
 633         r = bus_check_peercred(bus);
 634         if (r < 0)
 635                 return r;
 636
 637         *_bus = bus;
 638         bus = NULL;
 639
 640         return 0;
 641 }
 642
 643 int bus_connect_user_systemd(sd_bus **_bus) {
 644         _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL;
 645         _cleanup_free_ char *ee = NULL;
 646         const char *e;
 647         int r;
 648
 649         /* Try via kdbus first, and then directly */
 650
 651         assert(_bus);
 652
 653         r = sd_bus_new(&bus);
 654         if (r < 0)
 655                 return r;
 656
 657         if (asprintf(&bus->address, KERNEL_USER_BUS_ADDRESS_FMT, getuid()) < 0)
 658                 return -ENOMEM;
 659
 660         bus->bus_client = true;
 661
 662         r = sd_bus_start(bus);
 663         if (r >= 0) {
 664                 *_bus = bus;
 665                 bus = NULL;
 666                 return 0;
 667         }
 668
 669         bus = sd_bus_unref(bus);
 670
 671         e = secure_getenv("XDG_RUNTIME_DIR");
 672         if (!e)
 673                 return sd_bus_default_user(_bus);
 674
 675         ee = bus_address_escape(e);
 676         if (!ee)
 677                 return -ENOMEM;
 678
 679         r = sd_bus_new(&bus);
 680         if (r < 0)
 681                 return r;
 682
 683         bus->address = strjoin("unix:path=", ee, "/systemd/private");
 684         if (!bus->address)
 685                 return -ENOMEM;
 686
 687         r = sd_bus_start(bus);
 688         if (r < 0)
 689                 return sd_bus_default_user(_bus);
 690
 691         r = bus_check_peercred(bus);
 692         if (r < 0)
 693                 return r;
 694
 695         *_bus = bus;
 696         bus = NULL;
 697
 698         return 0;
 699 }
 700 #endif // 0
 701
 702 #define print_property(name, fmt, ...)                                  \
 703         do {                                                            \
 704                 if (value)                                              \
 705                         printf(fmt "\n", __VA_ARGS__);                  \
 706                 else                                                    \
 707                         printf("%s=" fmt "\n", name, __VA_ARGS__);      \
 708         } while(0)
 709
 710 int bus_print_property(const char *name, sd_bus_message *property, bool value, bool all) {
 711         char type;
 712         const char *contents;
 713         int r;
 714
 715         assert(name);
 716         assert(property);
 717
 718         r = sd_bus_message_peek_type(property, &type, &contents);
 719         if (r < 0)
 720                 return r;
 721
 722         switch (type) {
 723
 724         case SD_BUS_TYPE_STRING: {
 725                 const char *s;
 726
 727                 r = sd_bus_message_read_basic(property, type, &s);
 728                 if (r < 0)
 729                         return r;
 730
 731                 if (all || !isempty(s))
 732                         print_property(name, "%s", s);
 733
 734                 return 1;
 735         }
 736
 737         case SD_BUS_TYPE_BOOLEAN: {
 738                 int b;
 739
 740                 r = sd_bus_message_read_basic(property, type, &b);
 741                 if (r < 0)
 742                         return r;
 743
 744                 print_property(name, "%s", yes_no(b));
 745
 746                 return 1;
 747         }
 748
 749         case SD_BUS_TYPE_UINT64: {
 750                 uint64_t u;
 751
 752                 r = sd_bus_message_read_basic(property, type, &u);
 753                 if (r < 0)
 754                         return r;
 755
 756                 /* Yes, heuristics! But we can change this check
 757                  * should it turn out to not be sufficient */
 758
 759                 if (endswith(name, "Timestamp")) {
 760                         char timestamp[FORMAT_TIMESTAMP_MAX], *t;
 761
 762                         t = format_timestamp(timestamp, sizeof(timestamp), u);
 763                         if (t || all)
 764                                 print_property(name, "%s", strempty(t));
 765
 766                 } else if (strstr(name, "USec")) {
 767                         char timespan[FORMAT_TIMESPAN_MAX];
 768
 769                         print_property(name, "%s", format_timespan(timespan, sizeof(timespan), u, 0));
 770                 } else if (streq(name, "RestrictNamespaces")) {
 771                         _cleanup_free_ char *s = NULL;
 772                         const char *result = NULL;
 773
 774                         if ((u & NAMESPACE_FLAGS_ALL) == 0)
 775                                 result = "yes";
 776                         else if ((u & NAMESPACE_FLAGS_ALL) == NAMESPACE_FLAGS_ALL)
 777                                 result = "no";
 778                         else {
 779                                 r = namespace_flag_to_string_many(u, &s);
 780                                 if (r < 0)
 781                                         return r;
 782
 783                                 result = s;
 784                         }
 785
 786                         print_property(name, "%s", result);
 787                 } else
 788                         print_property(name, "%"PRIu64, u);
 789
 790                 return 1;
 791         }
 792
 793         case SD_BUS_TYPE_INT64: {
 794                 int64_t i;
 795
 796                 r = sd_bus_message_read_basic(property, type, &i);
 797                 if (r < 0)
 798                         return r;
 799
 800                 print_property(name, "%"PRIi64, i);
 801
 802                 return 1;
 803         }
 804
 805         case SD_BUS_TYPE_UINT32: {
 806                 uint32_t u;
 807
 808                 r = sd_bus_message_read_basic(property, type, &u);
 809                 if (r < 0)
 810                         return r;
 811
 812                 if (strstr(name, "UMask") || strstr(name, "Mode"))
 813                         print_property(name, "%04o", u);
 814                 else
 815                         print_property(name, "%"PRIu32, u);
 816
 817                 return 1;
 818         }
 819
 820         case SD_BUS_TYPE_INT32: {
 821                 int32_t i;
 822
 823                 r = sd_bus_message_read_basic(property, type, &i);
 824                 if (r < 0)
 825                         return r;
 826
 827                 print_property(name, "%"PRIi32, i);
 828                 return 1;
 829         }
 830
 831         case SD_BUS_TYPE_DOUBLE: {
 832                 double d;
 833
 834                 r = sd_bus_message_read_basic(property, type, &d);
 835                 if (r < 0)
 836                         return r;
 837
 838                 print_property(name, "%g", d);
 839                 return 1;
 840         }
 841
 842         case SD_BUS_TYPE_ARRAY:
 843                 if (streq(contents, "s")) {
 844                         bool first = true;
 845                         const char *str;
 846
 847                         r = sd_bus_message_enter_container(property, SD_BUS_TYPE_ARRAY, contents);
 848                         if (r < 0)
 849                                 return r;
 850
 851                         while ((r = sd_bus_message_read_basic(property, SD_BUS_TYPE_STRING, &str)) > 0) {
 852                                 if (first && !value)
 853                                         printf("%s=", name);
 854
 855                                 printf("%s%s", first ? "" : " ", str);
 856
 857                                 first = false;
 858                         }
 859                         if (r < 0)
 860                                 return r;
 861
 862                         if (first && all && !value)
 863                                 printf("%s=", name);
 864                         if (!first || all)
 865                                 puts("");
 866
 867                         r = sd_bus_message_exit_container(property);
 868                         if (r < 0)
 869                                 return r;
 870
 871                         return 1;
 872
 873                 } else if (streq(contents, "y")) {
 874                         const uint8_t *u;
 875                         size_t n;
 876
 877                         r = sd_bus_message_read_array(property, SD_BUS_TYPE_BYTE, (const void**) &u, &n);
 878                         if (r < 0)
 879                                 return r;
 880
 881                         if (all || n > 0) {
 882                                 unsigned int i;
 883
 884                                 if (!value)
 885                                         printf("%s=", name);
 886
 887                                 for (i = 0; i < n; i++)
 888                                         printf("%02x", u[i]);
 889
 890                                 puts("");
 891                         }
 892
 893                         return 1;
 894
 895                 } else if (streq(contents, "u")) {
 896                         uint32_t *u;
 897                         size_t n;
 898
 899                         r = sd_bus_message_read_array(property, SD_BUS_TYPE_UINT32, (const void**) &u, &n);
 900                         if (r < 0)
 901                                 return r;
 902
 903                         if (all || n > 0) {
 904                                 unsigned int i;
 905
 906                                 if (!value)
 907                                         printf("%s=", name);
 908
 909                                 for (i = 0; i < n; i++)
 910                                         printf("%08x", u[i]);
 911
 912                                 puts("");
 913                         }
 914
 915                         return 1;
 916                 }
 917
 918                 break;
 919         }
 920
 921         return 0;
 922 }
 923
 924 int bus_print_all_properties(sd_bus *bus, const char *dest, const char *path, char **filter, bool value, bool all) {
 925         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 926         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 927         int r;
 928
 929         assert(bus);
 930         assert(path);
 931
 932         r = sd_bus_call_method(bus,
 933                         dest,
 934                         path,
 935                         "org.freedesktop.DBus.Properties",
 936                         "GetAll",
 937                         &error,
 938                         &reply,
 939                         "s", "");
 940         if (r < 0)
 941                 return r;
 942
 943         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}");
 944         if (r < 0)
 945                 return r;
 946
 947         while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
 948                 const char *name;
 949                 const char *contents;
 950
 951                 r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_STRING, &name);
 952                 if (r < 0)
 953                         return r;
 954
 955                 if (!filter || strv_find(filter, name)) {
 956                         r = sd_bus_message_peek_type(reply, NULL, &contents);
 957                         if (r < 0)
 958                                 return r;
 959
 960                         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, contents);
 961                         if (r < 0)
 962                                 return r;
 963
 964                         r = bus_print_property(name, reply, value, all);
 965                         if (r < 0)
 966                                 return r;
 967                         if (r == 0) {
 968                                 if (all)
 969                                         printf("%s=[unprintable]\n", name);
 970                                 /* skip what we didn't read */
 971                                 r = sd_bus_message_skip(reply, contents);
 972                                 if (r < 0)
 973                                         return r;
 974                         }
 975
 976                         r = sd_bus_message_exit_container(reply);
 977                         if (r < 0)
 978                                 return r;
 979                 } else {
 980                         r = sd_bus_message_skip(reply, "v");
 981                         if (r < 0)
 982                                 return r;
 983                 }
 984
 985                 r = sd_bus_message_exit_container(reply);
 986                 if (r < 0)
 987                         return r;
 988         }
 989         if (r < 0)
 990                 return r;
 991
 992         r = sd_bus_message_exit_container(reply);
 993         if (r < 0)
 994                 return r;
 995
 996         return 0;
 997 }
 998
 999 int bus_map_id128(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
1000         sd_id128_t *p = userdata;
1001         const void *v;
1002         size_t n;
1003         int r;
1004
1005         r = sd_bus_message_read_array(m, SD_BUS_TYPE_BYTE, &v, &n);
1006         if (r < 0)
1007                 return r;
1008
1009         if (n == 0)
1010                 *p = SD_ID128_NULL;
1011         else if (n == 16)
1012                 memcpy((*p).bytes, v, n);
1013         else
1014                 return -EINVAL;
1015
1016         return 0;
1017 }
1018
1019 static int map_basic(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
1020         char type;
1021         int r;
1022
1023         r = sd_bus_message_peek_type(m, &type, NULL);
1024         if (r < 0)
1025                 return r;
1026
1027         switch (type) {
1028
1029         case SD_BUS_TYPE_STRING: {
1030                 char **p = userdata;
1031                 const char *s;
1032
1033                 r = sd_bus_message_read_basic(m, type, &s);
1034                 if (r < 0)
1035                         return r;
1036
1037                 if (isempty(s))
1038                         s = NULL;
1039
1040                 return free_and_strdup(p, s);
1041         }
1042
1043         case SD_BUS_TYPE_ARRAY: {
1044                 _cleanup_strv_free_ char **l = NULL;
1045                 char ***p = userdata;
1046
1047                 r = bus_message_read_strv_extend(m, &l);
1048                 if (r < 0)
1049                         return r;
1050
1051                 strv_free(*p);
1052                 *p = l;
1053                 l = NULL;
1054                 return 0;
1055         }
1056
1057         case SD_BUS_TYPE_BOOLEAN: {
1058                 unsigned b;
1059                 int *p = userdata;
1060
1061                 r = sd_bus_message_read_basic(m, type, &b);
1062                 if (r < 0)
1063                         return r;
1064
1065                 *p = b;
1066                 return 0;
1067         }
1068
1069         case SD_BUS_TYPE_INT32:
1070         case SD_BUS_TYPE_UINT32: {
1071                 uint32_t u, *p = userdata;
1072
1073                 r = sd_bus_message_read_basic(m, type, &u);
1074                 if (r < 0)
1075                         return r;
1076
1077                 *p = u;
1078                 return 0;
1079         }
1080
1081         case SD_BUS_TYPE_INT64:
1082         case SD_BUS_TYPE_UINT64: {
1083                 uint64_t t, *p = userdata;
1084
1085                 r = sd_bus_message_read_basic(m, type, &t);
1086                 if (r < 0)
1087                         return r;
1088
1089                 *p = t;
1090                 return 0;
1091         }
1092
1093         case SD_BUS_TYPE_DOUBLE: {
1094                 double d, *p = userdata;
1095
1096                 r = sd_bus_message_read_basic(m, type, &d);
1097                 if (r < 0)
1098                         return r;
1099
1100                 *p = d;
1101                 return 0;
1102         }}
1103
1104         return -EOPNOTSUPP;
1105 }
1106
1107 int bus_message_map_all_properties(
1108                 sd_bus_message *m,
1109                 const struct bus_properties_map *map,
1110                 sd_bus_error *error,
1111                 void *userdata) {
1112
1113         int r;
1114
1115         assert(m);
1116         assert(map);
1117
1118         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "{sv}");
1119         if (r < 0)
1120                 return r;
1121
1122         while ((r = sd_bus_message_enter_container(m, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
1123                 const struct bus_properties_map *prop;
1124                 const char *member;
1125                 const char *contents;
1126                 void *v;
1127                 unsigned i;
1128
1129                 r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &member);
1130                 if (r < 0)
1131                         return r;
1132
1133                 for (i = 0, prop = NULL; map[i].member; i++)
1134                         if (streq(map[i].member, member)) {
1135                                 prop = &map[i];
1136                                 break;
1137                         }
1138
1139                 if (prop) {
1140                         r = sd_bus_message_peek_type(m, NULL, &contents);
1141                         if (r < 0)
1142                                 return r;
1143
1144                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_VARIANT, contents);
1145                         if (r < 0)
1146                                 return r;
1147
1148                         v = (uint8_t *)userdata + prop->offset;
1149                         if (map[i].set)
1150                                 r = prop->set(sd_bus_message_get_bus(m), member, m, error, v);
1151                         else
1152                                 r = map_basic(sd_bus_message_get_bus(m), member, m, error, v);
1153                         if (r < 0)
1154                                 return r;
1155
1156                         r = sd_bus_message_exit_container(m);
1157                         if (r < 0)
1158                                 return r;
1159                 } else {
1160                         r = sd_bus_message_skip(m, "v");
1161                         if (r < 0)
1162                                 return r;
1163                 }
1164
1165                 r = sd_bus_message_exit_container(m);
1166                 if (r < 0)
1167                         return r;
1168         }
1169         if (r < 0)
1170                 return r;
1171
1172         return sd_bus_message_exit_container(m);
1173 }
1174
1175 #if 0 /// UNNEEDED by elogind
1176 int bus_message_map_properties_changed(
1177                 sd_bus_message *m,
1178                 const struct bus_properties_map *map,
1179                 sd_bus_error *error,
1180                 void *userdata) {
1181
1182         const char *member;
1183         int r, invalidated, i;
1184
1185         assert(m);
1186         assert(map);
1187
1188         r = bus_message_map_all_properties(m, map, error, userdata);
1189         if (r < 0)
1190                 return r;
1191
1192         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "s");
1193         if (r < 0)
1194                 return r;
1195
1196         invalidated = 0;
1197         while ((r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &member)) > 0)
1198                 for (i = 0; map[i].member; i++)
1199                         if (streq(map[i].member, member)) {
1200                                 ++invalidated;
1201                                 break;
1202                         }
1203         if (r < 0)
1204                 return r;
1205
1206         r = sd_bus_message_exit_container(m);
1207         if (r < 0)
1208                 return r;
1209
1210         return invalidated;
1211 }
1212 #endif // 0
1213
1214 int bus_map_all_properties(
1215                 sd_bus *bus,
1216                 const char *destination,
1217                 const char *path,
1218                 const struct bus_properties_map *map,
1219                 sd_bus_error *error,
1220                 void *userdata) {
1221
1222         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
1223         int r;
1224
1225         assert(bus);
1226         assert(destination);
1227         assert(path);
1228         assert(map);
1229
1230         r = sd_bus_call_method(
1231                         bus,
1232                         destination,
1233                         path,
1234                         "org.freedesktop.DBus.Properties",
1235                         "GetAll",
1236                         error,
1237                         &m,
1238                         "s", "");
1239         if (r < 0)
1240                 return r;
1241
1242         return bus_message_map_all_properties(m, map, error, userdata);
1243 }
1244
1245 int bus_connect_transport(BusTransport transport, const char *host, bool user, sd_bus **ret) {
1246         _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL;
1247         int r;
1248
1249         assert(transport >= 0);
1250         assert(transport < _BUS_TRANSPORT_MAX);
1251         assert(ret);
1252
1253         assert_return((transport == BUS_TRANSPORT_LOCAL) == !host, -EINVAL);
1254         assert_return(transport == BUS_TRANSPORT_LOCAL || !user, -EOPNOTSUPP);
1255
1256         switch (transport) {
1257
1258         case BUS_TRANSPORT_LOCAL:
1259 #if 0 /// elogind does not support a user bus
1260                 if (user)
1261                         r = sd_bus_default_user(&bus);
1262                 else
1263 #endif // 0
1264                         r = sd_bus_default_system(&bus);
1265
1266                 break;
1267
1268         case BUS_TRANSPORT_REMOTE:
1269                 r = sd_bus_open_system_remote(&bus, host);
1270                 break;
1271
1272         case BUS_TRANSPORT_MACHINE:
1273                 r = sd_bus_open_system_machine(&bus, host);
1274                 break;
1275
1276         default:
1277                 assert_not_reached("Hmm, unknown transport type.");
1278         }
1279         if (r < 0)
1280                 return r;
1281
1282         r = sd_bus_set_exit_on_disconnect(bus, true);
1283         if (r < 0)
1284                 return r;
1285
1286         *ret = bus;
1287         bus = NULL;
1288
1289         return 0;
1290 }
1291
1292 #if 0 /// UNNEEDED by elogind
1293 int bus_connect_transport_systemd(BusTransport transport, const char *host, bool user, sd_bus **bus) {
1294         int r;
1295
1296         assert(transport >= 0);
1297         assert(transport < _BUS_TRANSPORT_MAX);
1298         assert(bus);
1299
1300         assert_return((transport == BUS_TRANSPORT_LOCAL) == !host, -EINVAL);
1301         assert_return(transport == BUS_TRANSPORT_LOCAL || !user, -EOPNOTSUPP);
1302
1303         switch (transport) {
1304
1305         case BUS_TRANSPORT_LOCAL:
1306                 if (user)
1307                         r = bus_connect_user_systemd(bus);
1308                 else
1309                         r = bus_connect_system_systemd(bus);
1310
1311                 break;
1312
1313         case BUS_TRANSPORT_REMOTE:
1314                 r = sd_bus_open_system_remote(bus, host);
1315                 break;
1316
1317         case BUS_TRANSPORT_MACHINE:
1318                 r = sd_bus_open_system_machine(bus, host);
1319                 break;
1320
1321         default:
1322                 assert_not_reached("Hmm, unknown transport type.");
1323         }
1324
1325         return r;
1326 }
1327 #endif // 0
1328
1329 int bus_property_get_bool(
1330                 sd_bus *bus,
1331                 const char *path,
1332                 const char *interface,
1333                 const char *property,
1334                 sd_bus_message *reply,
1335                 void *userdata,
1336                 sd_bus_error *error) {
1337
1338         int b = *(bool*) userdata;
1339
1340         return sd_bus_message_append_basic(reply, 'b', &b);
1341 }
1342
1343 #if 0 /// UNNEEDED by elogind
1344 int bus_property_get_id128(
1345                 sd_bus *bus,
1346                 const char *path,
1347                 const char *interface,
1348                 const char *property,
1349                 sd_bus_message *reply,
1350                 void *userdata,
1351                 sd_bus_error *error) {
1352
1353         sd_id128_t *id = userdata;
1354
1355         if (sd_id128_is_null(*id)) /* Add an empty array if the ID is zero */
1356                 return sd_bus_message_append(reply, "ay", 0);
1357         else
1358                 return sd_bus_message_append_array(reply, 'y', id->bytes, 16);
1359 }
1360 #endif // 0
1361
1362 #if __SIZEOF_SIZE_T__ != 8
1363 int bus_property_get_size(
1364                 sd_bus *bus,
1365                 const char *path,
1366                 const char *interface,
1367                 const char *property,
1368                 sd_bus_message *reply,
1369                 void *userdata,
1370                 sd_bus_error *error) {
1371
1372         uint64_t sz = *(size_t*) userdata;
1373
1374         return sd_bus_message_append_basic(reply, 't', &sz);
1375 }
1376 #endif
1377
1378 #if __SIZEOF_LONG__ != 8
1379 int bus_property_get_long(
1380                 sd_bus *bus,
1381                 const char *path,
1382                 const char *interface,
1383                 const char *property,
1384                 sd_bus_message *reply,
1385                 void *userdata,
1386                 sd_bus_error *error) {
1387
1388         int64_t l = *(long*) userdata;
1389
1390         return sd_bus_message_append_basic(reply, 'x', &l);
1391 }
1392
1393 int bus_property_get_ulong(
1394                 sd_bus *bus,
1395                 const char *path,
1396                 const char *interface,
1397                 const char *property,
1398                 sd_bus_message *reply,
1399                 void *userdata,
1400                 sd_bus_error *error) {
1401
1402         uint64_t ul = *(unsigned long*) userdata;
1403
1404         return sd_bus_message_append_basic(reply, 't', &ul);
1405 }
1406 #endif
1407
1408 int bus_log_parse_error(int r) {
1409         return log_error_errno(r, "Failed to parse bus message: %m");
1410 }
1411
1412 #if 0 /// UNNEEDED by elogind
1413 int bus_log_create_error(int r) {
1414         return log_error_errno(r, "Failed to create bus message: %m");
1415 }
1416
1417 #endif // 0
1418 #if 0 /// UNNEEDED by elogind
1419 /**
1420  * bus_path_encode_unique() - encode unique object path
1421  * @b: bus connection or NULL
1422  * @prefix: object path prefix
1423  * @sender_id: unique-name of client, or NULL
1424  * @external_id: external ID to be chosen by client, or NULL
1425  * @ret_path: storage for encoded object path pointer
1426  *
1427  * Whenever we provide a bus API that allows clients to create and manage
1428  * server-side objects, we need to provide a unique name for these objects. If
1429  * we let the server choose the name, we suffer from a race condition: If a
1430  * client creates an object asynchronously, it cannot destroy that object until
1431  * it received the method reply. It cannot know the name of the new object,
1432  * thus, it cannot destroy it. Furthermore, it enforces a round-trip.
1433  *
1434  * Therefore, many APIs allow the client to choose the unique name for newly
1435  * created objects. There're two problems to solve, though:
1436  *    1) Object names are usually defined via dbus object paths, which are
1437  *       usually globally namespaced. Therefore, multiple clients must be able
1438  *       to choose unique object names without interference.
1439  *    2) If multiple libraries share the same bus connection, they must be
1440  *       able to choose unique object names without interference.
1441  * The first problem is solved easily by prefixing a name with the
1442  * unique-bus-name of a connection. The server side must enforce this and
1443  * reject any other name. The second problem is solved by providing unique
1444  * suffixes from within sd-bus.
1445  *
1446  * This helper allows clients to create unique object-paths. It uses the
1447  * template '/prefix/sender_id/external_id' and returns the new path in
1448  * @ret_path (must be freed by the caller).
1449  * If @sender_id is NULL, the unique-name of @b is used. If @external_id is
1450  * NULL, this function allocates a unique suffix via @b (by requesting a new
1451  * cookie). If both @sender_id and @external_id are given, @b can be passed as
1452  * NULL.
1453  *
1454  * Returns: 0 on success, negative error code on failure.
1455  */
1456 int bus_path_encode_unique(sd_bus *b, const char *prefix, const char *sender_id, const char *external_id, char **ret_path) {
1457         _cleanup_free_ char *sender_label = NULL, *external_label = NULL;
1458         char external_buf[DECIMAL_STR_MAX(uint64_t)], *p;
1459         int r;
1460
1461         assert_return(b || (sender_id && external_id), -EINVAL);
1462         assert_return(object_path_is_valid(prefix), -EINVAL);
1463         assert_return(ret_path, -EINVAL);
1464
1465         if (!sender_id) {
1466                 r = sd_bus_get_unique_name(b, &sender_id);
1467                 if (r < 0)
1468                         return r;
1469         }
1470
1471         if (!external_id) {
1472                 xsprintf(external_buf, "%"PRIu64, ++b->cookie);
1473                 external_id = external_buf;
1474         }
1475
1476         sender_label = bus_label_escape(sender_id);
1477         if (!sender_label)
1478                 return -ENOMEM;
1479
1480         external_label = bus_label_escape(external_id);
1481         if (!external_label)
1482                 return -ENOMEM;
1483
1484         p = strjoin(prefix, "/", sender_label, "/", external_label);
1485         if (!p)
1486                 return -ENOMEM;
1487
1488         *ret_path = p;
1489         return 0;
1490 }
1491
1492 /**
1493  * bus_path_decode_unique() - decode unique object path
1494  * @path: object path to decode
1495  * @prefix: object path prefix
1496  * @ret_sender: output parameter for sender-id label
1497  * @ret_external: output parameter for external-id label
1498  *
1499  * This does the reverse of bus_path_encode_unique() (see its description for
1500  * details). Both trailing labels, sender-id and external-id, are unescaped and
1501  * returned in the given output parameters (the caller must free them).
1502  *
1503  * Note that this function returns 0 if the path does not match the template
1504  * (see bus_path_encode_unique()), 1 if it matched.
1505  *
1506  * Returns: Negative error code on failure, 0 if the given object path does not
1507  *          match the template (return parameters are set to NULL), 1 if it was
1508  *          parsed successfully (return parameters contain allocated labels).
1509  */
1510 int bus_path_decode_unique(const char *path, const char *prefix, char **ret_sender, char **ret_external) {
1511         const char *p, *q;
1512         char *sender, *external;
1513
1514         assert(object_path_is_valid(path));
1515         assert(object_path_is_valid(prefix));
1516         assert(ret_sender);
1517         assert(ret_external);
1518
1519         p = object_path_startswith(path, prefix);
1520         if (!p) {
1521                 *ret_sender = NULL;
1522                 *ret_external = NULL;
1523                 return 0;
1524         }
1525
1526         q = strchr(p, '/');
1527         if (!q) {
1528                 *ret_sender = NULL;
1529                 *ret_external = NULL;
1530                 return 0;
1531         }
1532
1533         sender = bus_label_unescape_n(p, q - p);
1534         external = bus_label_unescape(q + 1);
1535         if (!sender || !external) {
1536                 free(sender);
1537                 free(external);
1538                 return -ENOMEM;
1539         }
1540
1541         *ret_sender = sender;
1542         *ret_external = external;
1543         return 1;
1544 }
1545 #endif // 0
1546
1547 #if 0 /// UNNEEDED by elogind
1548 int bus_property_get_rlimit(
1549                 sd_bus *bus,
1550                 const char *path,
1551                 const char *interface,
1552                 const char *property,
1553                 sd_bus_message *reply,
1554                 void *userdata,
1555                 sd_bus_error *error) {
1556
1557         struct rlimit *rl;
1558         uint64_t u;
1559         rlim_t x;
1560         const char *is_soft;
1561
1562         assert(bus);
1563         assert(reply);
1564         assert(userdata);
1565
1566         is_soft = endswith(property, "Soft");
1567         rl = *(struct rlimit**) userdata;
1568         if (rl)
1569                 x = is_soft ? rl->rlim_cur : rl->rlim_max;
1570         else {
1571                 struct rlimit buf = {};
1572                 int z;
1573                 const char *s;
1574
1575                 s = is_soft ? strndupa(property, is_soft - property) : property;
1576
1577                 z = rlimit_from_string(strstr(s, "Limit"));
1578                 assert(z >= 0);
1579
1580                 getrlimit(z, &buf);
1581                 x = is_soft ? buf.rlim_cur : buf.rlim_max;
1582         }
1583
1584         /* rlim_t might have different sizes, let's map
1585          * RLIMIT_INFINITY to (uint64_t) -1, so that it is the same on
1586          * all archs */
1587         u = x == RLIM_INFINITY ? (uint64_t) -1 : (uint64_t) x;
1588
1589         return sd_bus_message_append(reply, "t", u);
1590 }
1591
1592 int bus_track_add_name_many(sd_bus_track *t, char **l) {
1593         int r = 0;
1594         char **i;
1595
1596         assert(t);
1597
1598         /* Continues adding after failure, and returns the first failure. */
1599
1600         STRV_FOREACH(i, l) {
1601                 int k;
1602
1603                 k = sd_bus_track_add_name(t, *i);
1604                 if (k < 0 && r >= 0)
1605                         r = k;
1606         }
1607
1608         return r;
1609 }
1610 #endif // 0