src/machine/machined-dbus.c

   1 /***
   2   This file is part of systemd.
   3
   4   Copyright 2011 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 <string.h>
  22 #include <unistd.h>
  23
  24 #include "sd-id128.h"
  25
  26 #include "alloc-util.h"
  27 #include "btrfs-util.h"
  28 #include "bus-common-errors.h"
  29 #include "bus-util.h"
  30 #include "cgroup-util.h"
  31 #include "fd-util.h"
  32 #include "formats-util.h"
  33 #include "hostname-util.h"
  34 #include "image-dbus.h"
  35 #include "io-util.h"
  36 #include "machine-dbus.h"
  37 #include "machine-image.h"
  38 #include "machine-pool.h"
  39 #include "machined.h"
  40 #include "path-util.h"
  41 #include "process-util.h"
  42 #include "stdio-util.h"
  43 #include "strv.h"
  44 #include "unit-name.h"
  45 #include "user-util.h"
  46
  47 static int property_get_pool_path(
  48                 sd_bus *bus,
  49                 const char *path,
  50                 const char *interface,
  51                 const char *property,
  52                 sd_bus_message *reply,
  53                 void *userdata,
  54                 sd_bus_error *error) {
  55
  56         assert(bus);
  57         assert(reply);
  58
  59         return sd_bus_message_append(reply, "s", "/var/lib/machines");
  60 }
  61
  62 static int property_get_pool_usage(
  63                 sd_bus *bus,
  64                 const char *path,
  65                 const char *interface,
  66                 const char *property,
  67                 sd_bus_message *reply,
  68                 void *userdata,
  69                 sd_bus_error *error) {
  70
  71         _cleanup_close_ int fd = -1;
  72         uint64_t usage = (uint64_t) -1;
  73         struct stat st;
  74
  75         assert(bus);
  76         assert(reply);
  77
  78         /* We try to read the quota info from /var/lib/machines, as
  79          * well as the usage of the loopback file
  80          * /var/lib/machines.raw, and pick the larger value. */
  81
  82         fd = open("/var/lib/machines", O_RDONLY|O_CLOEXEC|O_DIRECTORY);
  83         if (fd >= 0) {
  84                 BtrfsQuotaInfo q;
  85
  86                 if (btrfs_subvol_get_subtree_quota_fd(fd, 0, &q) >= 0)
  87                         usage = q.referenced;
  88         }
  89
  90         if (stat("/var/lib/machines.raw", &st) >= 0) {
  91                 if (usage == (uint64_t) -1 || st.st_blocks * 512ULL > usage)
  92                         usage = st.st_blocks * 512ULL;
  93         }
  94
  95         return sd_bus_message_append(reply, "t", usage);
  96 }
  97
  98 static int property_get_pool_limit(
  99                 sd_bus *bus,
 100                 const char *path,
 101                 const char *interface,
 102                 const char *property,
 103                 sd_bus_message *reply,
 104                 void *userdata,
 105                 sd_bus_error *error) {
 106
 107         _cleanup_close_ int fd = -1;
 108         uint64_t size = (uint64_t) -1;
 109         struct stat st;
 110
 111         assert(bus);
 112         assert(reply);
 113
 114         /* We try to read the quota limit from /var/lib/machines, as
 115          * well as the size of the loopback file
 116          * /var/lib/machines.raw, and pick the smaller value. */
 117
 118         fd = open("/var/lib/machines", O_RDONLY|O_CLOEXEC|O_DIRECTORY);
 119         if (fd >= 0) {
 120                 BtrfsQuotaInfo q;
 121
 122                 if (btrfs_subvol_get_subtree_quota_fd(fd, 0, &q) >= 0)
 123                         size = q.referenced_max;
 124         }
 125
 126         if (stat("/var/lib/machines.raw", &st) >= 0) {
 127                 if (size == (uint64_t) -1 || (uint64_t) st.st_size < size)
 128                         size = st.st_size;
 129         }
 130
 131         return sd_bus_message_append(reply, "t", size);
 132 }
 133
 134 static int method_get_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 135         _cleanup_free_ char *p = NULL;
 136         Manager *m = userdata;
 137         Machine *machine;
 138         const char *name;
 139         int r;
 140
 141         assert(message);
 142         assert(m);
 143
 144         r = sd_bus_message_read(message, "s", &name);
 145         if (r < 0)
 146                 return r;
 147
 148         machine = hashmap_get(m->machines, name);
 149         if (!machine)
 150                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
 151
 152         p = machine_bus_path(machine);
 153         if (!p)
 154                 return -ENOMEM;
 155
 156         return sd_bus_reply_method_return(message, "o", p);
 157 }
 158
 159 static int method_get_image(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 160         _cleanup_free_ char *p = NULL;
 161         Manager *m = userdata;
 162         const char *name;
 163         int r;
 164
 165         assert(message);
 166         assert(m);
 167
 168         r = sd_bus_message_read(message, "s", &name);
 169         if (r < 0)
 170                 return r;
 171
 172         r = image_find(name, NULL);
 173         if (r == 0)
 174                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", name);
 175         if (r < 0)
 176                 return r;
 177
 178         p = image_bus_path(name);
 179         if (!p)
 180                 return -ENOMEM;
 181
 182         return sd_bus_reply_method_return(message, "o", p);
 183 }
 184
 185 static int method_get_machine_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 186         _cleanup_free_ char *p = NULL;
 187         Manager *m = userdata;
 188         Machine *machine = NULL;
 189         pid_t pid;
 190         int r;
 191
 192         assert(message);
 193         assert(m);
 194
 195         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 196
 197         r = sd_bus_message_read(message, "u", &pid);
 198         if (r < 0)
 199                 return r;
 200
 201         if (pid < 0)
 202                 return -EINVAL;
 203
 204         if (pid == 0) {
 205                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 206
 207                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 208                 if (r < 0)
 209                         return r;
 210
 211                 r = sd_bus_creds_get_pid(creds, &pid);
 212                 if (r < 0)
 213                         return r;
 214         }
 215
 216         r = manager_get_machine_by_pid(m, pid, &machine);
 217         if (r < 0)
 218                 return r;
 219         if (!machine)
 220                 return sd_bus_error_setf(error, BUS_ERROR_NO_MACHINE_FOR_PID, "PID "PID_FMT" does not belong to any known machine", pid);
 221
 222         p = machine_bus_path(machine);
 223         if (!p)
 224                 return -ENOMEM;
 225
 226         return sd_bus_reply_method_return(message, "o", p);
 227 }
 228
 229 static int method_list_machines(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 230         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 231         Manager *m = userdata;
 232         Machine *machine;
 233         Iterator i;
 234         int r;
 235
 236         assert(message);
 237         assert(m);
 238
 239         r = sd_bus_message_new_method_return(message, &reply);
 240         if (r < 0)
 241                 return sd_bus_error_set_errno(error, r);
 242
 243         r = sd_bus_message_open_container(reply, 'a', "(ssso)");
 244         if (r < 0)
 245                 return sd_bus_error_set_errno(error, r);
 246
 247         HASHMAP_FOREACH(machine, m->machines, i) {
 248                 _cleanup_free_ char *p = NULL;
 249
 250                 p = machine_bus_path(machine);
 251                 if (!p)
 252                         return -ENOMEM;
 253
 254                 r = sd_bus_message_append(reply, "(ssso)",
 255                                           machine->name,
 256                                           strempty(machine_class_to_string(machine->class)),
 257                                           machine->service,
 258                                           p);
 259                 if (r < 0)
 260                         return sd_bus_error_set_errno(error, r);
 261         }
 262
 263         r = sd_bus_message_close_container(reply);
 264         if (r < 0)
 265                 return sd_bus_error_set_errno(error, r);
 266
 267         return sd_bus_send(NULL, reply, NULL);
 268 }
 269
 270 static int method_create_or_register_machine(Manager *manager, sd_bus_message *message, bool read_network, Machine **_m, sd_bus_error *error) {
 271         const char *name, *service, *class, *root_directory;
 272         const int32_t *netif = NULL;
 273         MachineClass c;
 274         uint32_t leader;
 275         sd_id128_t id;
 276         const void *v;
 277         Machine *m;
 278         size_t n, n_netif = 0;
 279         int r;
 280
 281         assert(manager);
 282         assert(message);
 283         assert(_m);
 284
 285         r = sd_bus_message_read(message, "s", &name);
 286         if (r < 0)
 287                 return r;
 288         if (!machine_name_is_valid(name))
 289                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid machine name");
 290
 291         r = sd_bus_message_read_array(message, 'y', &v, &n);
 292         if (r < 0)
 293                 return r;
 294         if (n == 0)
 295                 id = SD_ID128_NULL;
 296         else if (n == 16)
 297                 memcpy(&id, v, n);
 298         else
 299                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid machine ID parameter");
 300
 301         r = sd_bus_message_read(message, "ssus", &service, &class, &leader, &root_directory);
 302         if (r < 0)
 303                 return r;
 304
 305         if (read_network) {
 306                 size_t i;
 307
 308                 r = sd_bus_message_read_array(message, 'i', (const void**) &netif, &n_netif);
 309                 if (r < 0)
 310                         return r;
 311
 312                 n_netif /= sizeof(int32_t);
 313
 314                 for (i = 0; i < n_netif; i++) {
 315                         if (netif[i] <= 0)
 316                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid network interface index %i", netif[i]);
 317                 }
 318         }
 319
 320         if (isempty(class))
 321                 c = _MACHINE_CLASS_INVALID;
 322         else {
 323                 c = machine_class_from_string(class);
 324                 if (c < 0)
 325                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid machine class parameter");
 326         }
 327
 328         if (leader == 1)
 329                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID");
 330
 331         if (!isempty(root_directory) && !path_is_absolute(root_directory))
 332                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Root directory must be empty or an absolute path");
 333
 334         if (leader == 0) {
 335                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 336
 337                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 338                 if (r < 0)
 339                         return r;
 340
 341                 assert_cc(sizeof(uint32_t) == sizeof(pid_t));
 342
 343                 r = sd_bus_creds_get_pid(creds, (pid_t*) &leader);
 344                 if (r < 0)
 345                         return r;
 346         }
 347
 348         if (hashmap_get(manager->machines, name))
 349                 return sd_bus_error_setf(error, BUS_ERROR_MACHINE_EXISTS, "Machine '%s' already exists", name);
 350
 351         r = manager_add_machine(manager, name, &m);
 352         if (r < 0)
 353                 return r;
 354
 355         m->leader = leader;
 356         m->class = c;
 357         m->id = id;
 358
 359         if (!isempty(service)) {
 360                 m->service = strdup(service);
 361                 if (!m->service) {
 362                         r = -ENOMEM;
 363                         goto fail;
 364                 }
 365         }
 366
 367         if (!isempty(root_directory)) {
 368                 m->root_directory = strdup(root_directory);
 369                 if (!m->root_directory) {
 370                         r = -ENOMEM;
 371                         goto fail;
 372                 }
 373         }
 374
 375         if (n_netif > 0) {
 376                 assert_cc(sizeof(int32_t) == sizeof(int));
 377                 m->netif = memdup(netif, sizeof(int32_t) * n_netif);
 378                 if (!m->netif) {
 379                         r = -ENOMEM;
 380                         goto fail;
 381                 }
 382
 383                 m->n_netif = n_netif;
 384         }
 385
 386         *_m = m;
 387
 388         return 1;
 389
 390 fail:
 391         machine_add_to_gc_queue(m);
 392         return r;
 393 }
 394
 395 static int method_create_machine_internal(sd_bus_message *message, bool read_network, void *userdata, sd_bus_error *error) {
 396         Manager *manager = userdata;
 397         Machine *m = NULL;
 398         int r;
 399
 400         assert(message);
 401         assert(manager);
 402
 403         r = method_create_or_register_machine(manager, message, read_network, &m, error);
 404         if (r < 0)
 405                 return r;
 406
 407         r = sd_bus_message_enter_container(message, 'a', "(sv)");
 408         if (r < 0)
 409                 goto fail;
 410
 411         r = machine_start(m, message, error);
 412         if (r < 0)
 413                 goto fail;
 414
 415         m->create_message = sd_bus_message_ref(message);
 416         return 1;
 417
 418 fail:
 419         machine_add_to_gc_queue(m);
 420         return r;
 421 }
 422
 423 static int method_create_machine_with_network(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 424         return method_create_machine_internal(message, true, userdata, error);
 425 }
 426
 427 static int method_create_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 428         return method_create_machine_internal(message, false, userdata, error);
 429 }
 430
 431 static int method_register_machine_internal(sd_bus_message *message, bool read_network, void *userdata, sd_bus_error *error) {
 432         Manager *manager = userdata;
 433         _cleanup_free_ char *p = NULL;
 434         Machine *m = NULL;
 435         int r;
 436
 437         assert(message);
 438         assert(manager);
 439
 440         r = method_create_or_register_machine(manager, message, read_network, &m, error);
 441         if (r < 0)
 442                 return r;
 443
 444         r = cg_pid_get_unit(m->leader, &m->unit);
 445         if (r < 0) {
 446                 r = sd_bus_error_set_errnof(error, r, "Failed to determine unit of process "PID_FMT" : %s", m->leader, strerror(-r));
 447                 goto fail;
 448         }
 449
 450         r = machine_start(m, NULL, error);
 451         if (r < 0)
 452                 goto fail;
 453
 454         p = machine_bus_path(m);
 455         if (!p) {
 456                 r = -ENOMEM;
 457                 goto fail;
 458         }
 459
 460         return sd_bus_reply_method_return(message, "o", p);
 461
 462 fail:
 463         machine_add_to_gc_queue(m);
 464         return r;
 465 }
 466
 467 static int method_register_machine_with_network(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 468         return method_register_machine_internal(message, true, userdata, error);
 469 }
 470
 471 static int method_register_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 472         return method_register_machine_internal(message, false, userdata, error);
 473 }
 474
 475 static int method_terminate_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 476         Manager *m = userdata;
 477         Machine *machine;
 478         const char *name;
 479         int r;
 480
 481         assert(message);
 482         assert(m);
 483
 484         r = sd_bus_message_read(message, "s", &name);
 485         if (r < 0)
 486                 return sd_bus_error_set_errno(error, r);
 487
 488         machine = hashmap_get(m->machines, name);
 489         if (!machine)
 490                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
 491
 492         return bus_machine_method_terminate(message, machine, error);
 493 }
 494
 495 static int method_kill_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 496         Manager *m = userdata;
 497         Machine *machine;
 498         const char *name;
 499         int r;
 500
 501         assert(message);
 502         assert(m);
 503
 504         r = sd_bus_message_read(message, "s", &name);
 505         if (r < 0)
 506                 return sd_bus_error_set_errno(error, r);
 507
 508         machine = hashmap_get(m->machines, name);
 509         if (!machine)
 510                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
 511
 512         return bus_machine_method_kill(message, machine, error);
 513 }
 514
 515 static int method_get_machine_addresses(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 516         Manager *m = userdata;
 517         Machine *machine;
 518         const char *name;
 519         int r;
 520
 521         assert(message);
 522         assert(m);
 523
 524         r = sd_bus_message_read(message, "s", &name);
 525         if (r < 0)
 526                 return sd_bus_error_set_errno(error, r);
 527
 528         machine = hashmap_get(m->machines, name);
 529         if (!machine)
 530                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
 531
 532         return bus_machine_method_get_addresses(message, machine, error);
 533 }
 534
 535 static int method_get_machine_os_release(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 536         Manager *m = userdata;
 537         Machine *machine;
 538         const char *name;
 539         int r;
 540
 541         assert(message);
 542         assert(m);
 543
 544         r = sd_bus_message_read(message, "s", &name);
 545         if (r < 0)
 546                 return sd_bus_error_set_errno(error, r);
 547
 548         machine = hashmap_get(m->machines, name);
 549         if (!machine)
 550                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
 551
 552         return bus_machine_method_get_os_release(message, machine, error);
 553 }
 554
 555 static int method_list_images(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 556         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 557         _cleanup_(image_hashmap_freep) Hashmap *images = NULL;
 558         Manager *m = userdata;
 559         Image *image;
 560         Iterator i;
 561         int r;
 562
 563         assert(message);
 564         assert(m);
 565
 566         images = hashmap_new(&string_hash_ops);
 567         if (!images)
 568                 return -ENOMEM;
 569
 570         r = image_discover(images);
 571         if (r < 0)
 572                 return r;
 573
 574         r = sd_bus_message_new_method_return(message, &reply);
 575         if (r < 0)
 576                 return r;
 577
 578         r = sd_bus_message_open_container(reply, 'a', "(ssbttto)");
 579         if (r < 0)
 580                 return r;
 581
 582         HASHMAP_FOREACH(image, images, i) {
 583                 _cleanup_free_ char *p = NULL;
 584
 585                 p = image_bus_path(image->name);
 586                 if (!p)
 587                         return -ENOMEM;
 588
 589                 r = sd_bus_message_append(reply, "(ssbttto)",
 590                                           image->name,
 591                                           image_type_to_string(image->type),
 592                                           image->read_only,
 593                                           image->crtime,
 594                                           image->mtime,
 595                                           image->usage,
 596                                           p);
 597                 if (r < 0)
 598                         return r;
 599         }
 600
 601         r = sd_bus_message_close_container(reply);
 602         if (r < 0)
 603                 return r;
 604
 605         return sd_bus_send(NULL, reply, NULL);
 606 }
 607
 608 static int method_open_machine_pty(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 609         Manager *m = userdata;
 610         Machine *machine;
 611         const char *name;
 612         int r;
 613
 614         assert(message);
 615         assert(m);
 616
 617         r = sd_bus_message_read(message, "s", &name);
 618         if (r < 0)
 619                 return sd_bus_error_set_errno(error, r);
 620
 621         machine = hashmap_get(m->machines, name);
 622         if (!machine)
 623                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
 624
 625         return bus_machine_method_open_pty(message, machine, error);
 626 }
 627
 628 static int method_open_machine_login(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 629         Manager *m = userdata;
 630         Machine *machine;
 631         const char *name;
 632         int r;
 633
 634         assert(message);
 635         assert(m);
 636
 637         r = sd_bus_message_read(message, "s", &name);
 638         if (r < 0)
 639                 return r;
 640
 641         machine = hashmap_get(m->machines, name);
 642         if (!machine)
 643                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
 644
 645         return bus_machine_method_open_login(message, machine, error);
 646 }
 647
 648 static int method_open_machine_shell(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 649         Manager *m = userdata;
 650         Machine *machine;
 651         const char *name;
 652
 653         int r;
 654
 655         assert(message);
 656         assert(m);
 657
 658         r = sd_bus_message_read(message, "s", &name);
 659         if (r < 0)
 660                 return r;
 661
 662         machine = hashmap_get(m->machines, name);
 663         if (!machine)
 664                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
 665
 666         return bus_machine_method_open_shell(message, machine, error);
 667 }
 668
 669 static int method_bind_mount_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 670         Manager *m = userdata;
 671         Machine *machine;
 672         const char *name;
 673         int r;
 674
 675         assert(message);
 676         assert(m);
 677
 678         r = sd_bus_message_read(message, "s", &name);
 679         if (r < 0)
 680                 return r;
 681
 682         machine = hashmap_get(m->machines, name);
 683         if (!machine)
 684                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
 685
 686         return bus_machine_method_bind_mount(message, machine, error);
 687 }
 688
 689 static int method_copy_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 690         Manager *m = userdata;
 691         Machine *machine;
 692         const char *name;
 693         int r;
 694
 695         assert(message);
 696         assert(m);
 697
 698         r = sd_bus_message_read(message, "s", &name);
 699         if (r < 0)
 700                 return r;
 701
 702         machine = hashmap_get(m->machines, name);
 703         if (!machine)
 704                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
 705
 706         return bus_machine_method_copy(message, machine, error);
 707 }
 708
 709 static int method_remove_image(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 710         _cleanup_(image_unrefp) Image* i = NULL;
 711         const char *name;
 712         int r;
 713
 714         assert(message);
 715
 716         r = sd_bus_message_read(message, "s", &name);
 717         if (r < 0)
 718                 return r;
 719
 720         if (!image_name_is_valid(name))
 721                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", name);
 722
 723         r = image_find(name, &i);
 724         if (r < 0)
 725                 return r;
 726         if (r == 0)
 727                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", name);
 728
 729         i->userdata = userdata;
 730         return bus_image_method_remove(message, i, error);
 731 }
 732
 733 static int method_rename_image(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 734         _cleanup_(image_unrefp) Image* i = NULL;
 735         const char *old_name;
 736         int r;
 737
 738         assert(message);
 739
 740         r = sd_bus_message_read(message, "s", &old_name);
 741         if (r < 0)
 742                 return r;
 743
 744         if (!image_name_is_valid(old_name))
 745                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", old_name);
 746
 747         r = image_find(old_name, &i);
 748         if (r < 0)
 749                 return r;
 750         if (r == 0)
 751                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", old_name);
 752
 753         i->userdata = userdata;
 754         return bus_image_method_rename(message, i, error);
 755 }
 756
 757 static int method_clone_image(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 758         _cleanup_(image_unrefp) Image *i = NULL;
 759         const char *old_name;
 760         int r;
 761
 762         assert(message);
 763
 764         r = sd_bus_message_read(message, "s", &old_name);
 765         if (r < 0)
 766                 return r;
 767
 768         if (!image_name_is_valid(old_name))
 769                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", old_name);
 770
 771         r = image_find(old_name, &i);
 772         if (r < 0)
 773                 return r;
 774         if (r == 0)
 775                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", old_name);
 776
 777         i->userdata = userdata;
 778         return bus_image_method_clone(message, i, error);
 779 }
 780
 781 static int method_mark_image_read_only(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 782         _cleanup_(image_unrefp) Image *i = NULL;
 783         const char *name;
 784         int r;
 785
 786         assert(message);
 787
 788         r = sd_bus_message_read(message, "s", &name);
 789         if (r < 0)
 790                 return r;
 791
 792         if (!image_name_is_valid(name))
 793                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", name);
 794
 795         r = image_find(name, &i);
 796         if (r < 0)
 797                 return r;
 798         if (r == 0)
 799                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", name);
 800
 801         i->userdata = userdata;
 802         return bus_image_method_mark_read_only(message, i, error);
 803 }
 804
 805 static int method_set_pool_limit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 806         Manager *m = userdata;
 807         uint64_t limit;
 808         int r;
 809
 810         assert(message);
 811
 812         r = sd_bus_message_read(message, "t", &limit);
 813         if (r < 0)
 814                 return r;
 815         if (!FILE_SIZE_VALID_OR_INFINITY(limit))
 816                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New limit out of range");
 817
 818         r = bus_verify_polkit_async(
 819                         message,
 820                         CAP_SYS_ADMIN,
 821                         "org.freedesktop.machine1.manage-machines",
 822                         NULL,
 823                         false,
 824                         UID_INVALID,
 825                         &m->polkit_registry,
 826                         error);
 827         if (r < 0)
 828                 return r;
 829         if (r == 0)
 830                 return 1; /* Will call us back */
 831
 832         /* Set up the machine directory if necessary */
 833         r = setup_machine_directory(limit, error);
 834         if (r < 0)
 835                 return r;
 836
 837         /* Resize the backing loopback device, if there is one, except if we asked to drop any limit */
 838         if (limit != (uint64_t) -1) {
 839                 r = btrfs_resize_loopback("/var/lib/machines", limit, false);
 840                 if (r == -ENOTTY)
 841                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Quota is only supported on btrfs.");
 842                 if (r < 0 && r != -ENODEV) /* ignore ENODEV, as that's what is returned if the file system is not on loopback */
 843                         return sd_bus_error_set_errnof(error, r, "Failed to adjust loopback limit: %m");
 844         }
 845
 846         (void) btrfs_qgroup_set_limit("/var/lib/machines", 0, limit);
 847
 848         r = btrfs_subvol_set_subtree_quota_limit("/var/lib/machines", 0, limit);
 849         if (r == -ENOTTY)
 850                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Quota is only supported on btrfs.");
 851         if (r < 0)
 852                 return sd_bus_error_set_errnof(error, r, "Failed to adjust quota limit: %m");
 853
 854         return sd_bus_reply_method_return(message, NULL);
 855 }
 856
 857 static int method_set_image_limit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 858         _cleanup_(image_unrefp) Image *i = NULL;
 859         const char *name;
 860         int r;
 861
 862         assert(message);
 863
 864         r = sd_bus_message_read(message, "s", &name);
 865         if (r < 0)
 866                 return r;
 867
 868         if (!image_name_is_valid(name))
 869                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", name);
 870
 871         r = image_find(name, &i);
 872         if (r < 0)
 873                 return r;
 874         if (r == 0)
 875                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", name);
 876
 877         i->userdata = userdata;
 878         return bus_image_method_set_limit(message, i, error);
 879 }
 880
 881 static int method_map_from_machine_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 882         _cleanup_fclose_ FILE *f = NULL;
 883         Manager *m = userdata;
 884         const char *name, *p;
 885         Machine *machine;
 886         uint32_t uid;
 887         int r;
 888
 889         r = sd_bus_message_read(message, "su", &name, &uid);
 890         if (r < 0)
 891                 return r;
 892
 893         if (!uid_is_valid(uid))
 894                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid user ID " UID_FMT, uid);
 895
 896         machine = hashmap_get(m->machines, name);
 897         if (!machine)
 898                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
 899
 900         if (machine->class != MACHINE_CONTAINER)
 901                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Not supported for non-container machines.");
 902
 903         p = procfs_file_alloca(machine->leader, "uid_map");
 904         f = fopen(p, "re");
 905         if (!f)
 906                 return -errno;
 907
 908         for (;;) {
 909                 uid_t uid_base, uid_shift, uid_range, converted;
 910                 int k;
 911
 912                 errno = 0;
 913                 k = fscanf(f, UID_FMT " " UID_FMT " " UID_FMT, &uid_base, &uid_shift, &uid_range);
 914                 if (k < 0 && feof(f))
 915                         break;
 916                 if (k != 3) {
 917                         if (ferror(f) && errno > 0)
 918                                 return -errno;
 919
 920                         return -EIO;
 921                 }
 922
 923                 if (uid < uid_base || uid >= uid_base + uid_range)
 924                         continue;
 925
 926                 converted = uid - uid_base + uid_shift;
 927                 if (!uid_is_valid(converted))
 928                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid user ID " UID_FMT, uid);
 929
 930                 return sd_bus_reply_method_return(message, "u", (uint32_t) converted);
 931         }
 932
 933         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER_MAPPING, "Machine '%s' has no matching user mappings.", name);
 934 }
 935
 936 static int method_map_to_machine_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 937         Manager *m = userdata;
 938         Machine *machine;
 939         uid_t uid;
 940         Iterator i;
 941         int r;
 942
 943         r = sd_bus_message_read(message, "u", &uid);
 944         if (r < 0)
 945                 return r;
 946         if (!uid_is_valid(uid))
 947                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid user ID " UID_FMT, uid);
 948         if (uid < 0x10000)
 949                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER_MAPPING, "User " UID_FMT " belongs to host UID range", uid);
 950
 951         HASHMAP_FOREACH(machine, m->machines, i) {
 952                 _cleanup_fclose_ FILE *f = NULL;
 953                 char p[strlen("/proc//uid_map") + DECIMAL_STR_MAX(pid_t) + 1];
 954
 955                 if (machine->class != MACHINE_CONTAINER)
 956                         continue;
 957
 958                 xsprintf(p, "/proc/" UID_FMT "/uid_map", machine->leader);
 959                 f = fopen(p, "re");
 960                 if (!f) {
 961                         log_warning_errno(errno, "Failed top open %s, ignoring,", p);
 962                         continue;
 963                 }
 964
 965                 for (;;) {
 966                         _cleanup_free_ char *o = NULL;
 967                         uid_t uid_base, uid_shift, uid_range, converted;
 968                         int k;
 969
 970                         errno = 0;
 971                         k = fscanf(f, UID_FMT " " UID_FMT " " UID_FMT, &uid_base, &uid_shift, &uid_range);
 972                         if (k < 0 && feof(f))
 973                                 break;
 974                         if (k != 3) {
 975                                 if (ferror(f) && errno > 0)
 976                                         return -errno;
 977
 978                                 return -EIO;
 979                         }
 980
 981                         if (uid < uid_shift || uid >= uid_shift + uid_range)
 982                                 continue;
 983
 984                         converted = (uid - uid_shift + uid_base);
 985                         if (!uid_is_valid(converted))
 986                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid user ID " UID_FMT, uid);
 987
 988                         o = machine_bus_path(machine);
 989                         if (!o)
 990                                 return -ENOMEM;
 991
 992                         return sd_bus_reply_method_return(message, "sou", machine->name, o, (uint32_t) converted);
 993                 }
 994         }
 995
 996         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER_MAPPING, "No matching user mapping for " UID_FMT ".", uid);
 997 }
 998
 999 static int method_map_from_machine_group(sd_bus_message *message, void *groupdata, sd_bus_error *error) {
1000         _cleanup_fclose_ FILE *f = NULL;
1001         Manager *m = groupdata;
1002         const char *name, *p;
1003         Machine *machine;
1004         uint32_t gid;
1005         int r;
1006
1007         r = sd_bus_message_read(message, "su", &name, &gid);
1008         if (r < 0)
1009                 return r;
1010
1011         if (!gid_is_valid(gid))
1012                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid group ID " GID_FMT, gid);
1013
1014         machine = hashmap_get(m->machines, name);
1015         if (!machine)
1016                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
1017
1018         if (machine->class != MACHINE_CONTAINER)
1019                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Not supported for non-container machines.");
1020
1021         p = procfs_file_alloca(machine->leader, "gid_map");
1022         f = fopen(p, "re");
1023         if (!f)
1024                 return -errno;
1025
1026         for (;;) {
1027                 gid_t gid_base, gid_shift, gid_range, converted;
1028                 int k;
1029
1030                 errno = 0;
1031                 k = fscanf(f, GID_FMT " " GID_FMT " " GID_FMT, &gid_base, &gid_shift, &gid_range);
1032                 if (k < 0 && feof(f))
1033                         break;
1034                 if (k != 3) {
1035                         if (ferror(f) && errno > 0)
1036                                 return -errno;
1037
1038                         return -EIO;
1039                 }
1040
1041                 if (gid < gid_base || gid >= gid_base + gid_range)
1042                         continue;
1043
1044                 converted = gid - gid_base + gid_shift;
1045                 if (!gid_is_valid(converted))
1046                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid group ID " GID_FMT, gid);
1047
1048                 return sd_bus_reply_method_return(message, "u", (uint32_t) converted);
1049         }
1050
1051         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_GROUP_MAPPING, "Machine '%s' has no matching group mappings.", name);
1052 }
1053
1054 static int method_map_to_machine_group(sd_bus_message *message, void *groupdata, sd_bus_error *error) {
1055         Manager *m = groupdata;
1056         Machine *machine;
1057         gid_t gid;
1058         Iterator i;
1059         int r;
1060
1061         r = sd_bus_message_read(message, "u", &gid);
1062         if (r < 0)
1063                 return r;
1064         if (!gid_is_valid(gid))
1065                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid group ID " GID_FMT, gid);
1066         if (gid < 0x10000)
1067                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_GROUP_MAPPING, "Group " GID_FMT " belongs to host GID range", gid);
1068
1069         HASHMAP_FOREACH(machine, m->machines, i) {
1070                 _cleanup_fclose_ FILE *f = NULL;
1071                 char p[strlen("/proc//gid_map") + DECIMAL_STR_MAX(pid_t) + 1];
1072
1073                 if (machine->class != MACHINE_CONTAINER)
1074                         continue;
1075
1076                 xsprintf(p, "/proc/" GID_FMT "/gid_map", machine->leader);
1077                 f = fopen(p, "re");
1078                 if (!f) {
1079                         log_warning_errno(errno, "Failed top open %s, ignoring,", p);
1080                         continue;
1081                 }
1082
1083                 for (;;) {
1084                         _cleanup_free_ char *o = NULL;
1085                         gid_t gid_base, gid_shift, gid_range, converted;
1086                         int k;
1087
1088                         errno = 0;
1089                         k = fscanf(f, GID_FMT " " GID_FMT " " GID_FMT, &gid_base, &gid_shift, &gid_range);
1090                         if (k < 0 && feof(f))
1091                                 break;
1092                         if (k != 3) {
1093                                 if (ferror(f) && errno > 0)
1094                                         return -errno;
1095
1096                                 return -EIO;
1097                         }
1098
1099                         if (gid < gid_shift || gid >= gid_shift + gid_range)
1100                                 continue;
1101
1102                         converted = (gid - gid_shift + gid_base);
1103                         if (!gid_is_valid(converted))
1104                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid group ID " GID_FMT, gid);
1105
1106                         o = machine_bus_path(machine);
1107                         if (!o)
1108                                 return -ENOMEM;
1109
1110                         return sd_bus_reply_method_return(message, "sou", machine->name, o, (uint32_t) converted);
1111                 }
1112         }
1113
1114         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_GROUP_MAPPING, "No matching group mapping for " GID_FMT ".", gid);
1115 }
1116
1117 const sd_bus_vtable manager_vtable[] = {
1118         SD_BUS_VTABLE_START(0),
1119         SD_BUS_PROPERTY("PoolPath", "s", property_get_pool_path, 0, 0),
1120         SD_BUS_PROPERTY("PoolUsage", "t", property_get_pool_usage, 0, 0),
1121         SD_BUS_PROPERTY("PoolLimit", "t", property_get_pool_limit, 0, 0),
1122         SD_BUS_METHOD("GetMachine", "s", "o", method_get_machine, SD_BUS_VTABLE_UNPRIVILEGED),
1123         SD_BUS_METHOD("GetImage", "s", "o", method_get_image, SD_BUS_VTABLE_UNPRIVILEGED),
1124         SD_BUS_METHOD("GetMachineByPID", "u", "o", method_get_machine_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
1125         SD_BUS_METHOD("ListMachines", NULL, "a(ssso)", method_list_machines, SD_BUS_VTABLE_UNPRIVILEGED),
1126         SD_BUS_METHOD("ListImages", NULL, "a(ssbttto)", method_list_images, SD_BUS_VTABLE_UNPRIVILEGED),
1127         SD_BUS_METHOD("CreateMachine", "sayssusa(sv)", "o", method_create_machine, 0),
1128         SD_BUS_METHOD("CreateMachineWithNetwork", "sayssusaia(sv)", "o", method_create_machine_with_network, 0),
1129         SD_BUS_METHOD("RegisterMachine", "sayssus", "o", method_register_machine, 0),
1130         SD_BUS_METHOD("RegisterMachineWithNetwork", "sayssusai", "o", method_register_machine_with_network, 0),
1131         SD_BUS_METHOD("TerminateMachine", "s", NULL, method_terminate_machine, SD_BUS_VTABLE_UNPRIVILEGED),
1132         SD_BUS_METHOD("KillMachine", "ssi", NULL, method_kill_machine, SD_BUS_VTABLE_UNPRIVILEGED),
1133         SD_BUS_METHOD("GetMachineAddresses", "s", "a(iay)", method_get_machine_addresses, SD_BUS_VTABLE_UNPRIVILEGED),
1134         SD_BUS_METHOD("GetMachineOSRelease", "s", "a{ss}", method_get_machine_os_release, SD_BUS_VTABLE_UNPRIVILEGED),
1135         SD_BUS_METHOD("OpenMachinePTY", "s", "hs", method_open_machine_pty, 0),
1136         SD_BUS_METHOD("OpenMachineLogin", "s", "hs", method_open_machine_login, SD_BUS_VTABLE_UNPRIVILEGED),
1137         SD_BUS_METHOD("OpenMachineShell", "sssasas", "hs", method_open_machine_shell, SD_BUS_VTABLE_UNPRIVILEGED),
1138         SD_BUS_METHOD("BindMountMachine", "sssbb", NULL, method_bind_mount_machine, SD_BUS_VTABLE_UNPRIVILEGED),
1139         SD_BUS_METHOD("CopyFromMachine", "sss", NULL, method_copy_machine, SD_BUS_VTABLE_UNPRIVILEGED),
1140         SD_BUS_METHOD("CopyToMachine", "sss", NULL, method_copy_machine, SD_BUS_VTABLE_UNPRIVILEGED),
1141         SD_BUS_METHOD("RemoveImage", "s", NULL, method_remove_image, SD_BUS_VTABLE_UNPRIVILEGED),
1142         SD_BUS_METHOD("RenameImage", "ss", NULL, method_rename_image, SD_BUS_VTABLE_UNPRIVILEGED),
1143         SD_BUS_METHOD("CloneImage", "ssb", NULL, method_clone_image, SD_BUS_VTABLE_UNPRIVILEGED),
1144         SD_BUS_METHOD("MarkImageReadOnly", "sb", NULL, method_mark_image_read_only, SD_BUS_VTABLE_UNPRIVILEGED),
1145         SD_BUS_METHOD("SetPoolLimit", "t", NULL, method_set_pool_limit, SD_BUS_VTABLE_UNPRIVILEGED),
1146         SD_BUS_METHOD("SetImageLimit", "st", NULL, method_set_image_limit, SD_BUS_VTABLE_UNPRIVILEGED),
1147         SD_BUS_METHOD("MapFromMachineUser", "su", "u", method_map_from_machine_user, SD_BUS_VTABLE_UNPRIVILEGED),
1148         SD_BUS_METHOD("MapToMachineUser", "u", "sou", method_map_to_machine_user, SD_BUS_VTABLE_UNPRIVILEGED),
1149         SD_BUS_METHOD("MapFromMachineGroup", "su", "u", method_map_from_machine_group, SD_BUS_VTABLE_UNPRIVILEGED),
1150         SD_BUS_METHOD("MapToMachineGroup", "u", "sou", method_map_to_machine_group, SD_BUS_VTABLE_UNPRIVILEGED),
1151         SD_BUS_SIGNAL("MachineNew", "so", 0),
1152         SD_BUS_SIGNAL("MachineRemoved", "so", 0),
1153         SD_BUS_VTABLE_END
1154 };
1155
1156 int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1157         const char *path, *result, *unit;
1158         Manager *m = userdata;
1159         Machine *machine;
1160         uint32_t id;
1161         int r;
1162
1163         assert(message);
1164         assert(m);
1165
1166         r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
1167         if (r < 0) {
1168                 bus_log_parse_error(r);
1169                 return 0;
1170         }
1171
1172         machine = hashmap_get(m->machine_units, unit);
1173         if (!machine)
1174                 return 0;
1175
1176         if (streq_ptr(path, machine->scope_job)) {
1177                 machine->scope_job = mfree(machine->scope_job);
1178
1179                 if (machine->started) {
1180                         if (streq(result, "done"))
1181                                 machine_send_create_reply(machine, NULL);
1182                         else {
1183                                 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
1184
1185                                 sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED, "Start job for unit %s failed with '%s'", unit, result);
1186
1187                                 machine_send_create_reply(machine, &e);
1188                         }
1189                 }
1190
1191                 machine_save(machine);
1192         }
1193
1194         machine_add_to_gc_queue(machine);
1195         return 0;
1196 }
1197
1198 int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1199         _cleanup_free_ char *unit = NULL;
1200         const char *path;
1201         Manager *m = userdata;
1202         Machine *machine;
1203         int r;
1204
1205         assert(message);
1206         assert(m);
1207
1208         path = sd_bus_message_get_path(message);
1209         if (!path)
1210                 return 0;
1211
1212         r = unit_name_from_dbus_path(path, &unit);
1213         if (r == -EINVAL) /* not for a unit */
1214                 return 0;
1215         if (r < 0) {
1216                 log_oom();
1217                 return 0;
1218         }
1219
1220         machine = hashmap_get(m->machine_units, unit);
1221         if (!machine)
1222                 return 0;
1223
1224         machine_add_to_gc_queue(machine);
1225         return 0;
1226 }
1227
1228 int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1229         const char *path, *unit;
1230         Manager *m = userdata;
1231         Machine *machine;
1232         int r;
1233
1234         assert(message);
1235         assert(m);
1236
1237         r = sd_bus_message_read(message, "so", &unit, &path);
1238         if (r < 0) {
1239                 bus_log_parse_error(r);
1240                 return 0;
1241         }
1242
1243         machine = hashmap_get(m->machine_units, unit);
1244         if (!machine)
1245                 return 0;
1246
1247         machine_add_to_gc_queue(machine);
1248         return 0;
1249 }
1250
1251 int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1252         Manager *m = userdata;
1253         Machine *machine;
1254         Iterator i;
1255         int b, r;
1256
1257         assert(message);
1258         assert(m);
1259
1260         r = sd_bus_message_read(message, "b", &b);
1261         if (r < 0) {
1262                 bus_log_parse_error(r);
1263                 return 0;
1264         }
1265         if (b)
1266                 return 0;
1267
1268         /* systemd finished reloading, let's recheck all our machines */
1269         log_debug("System manager has been reloaded, rechecking machines...");
1270
1271         HASHMAP_FOREACH(machine, m->machines, i)
1272                 machine_add_to_gc_queue(machine);
1273
1274         return 0;
1275 }
1276
1277 int manager_start_scope(
1278                 Manager *manager,
1279                 const char *scope,
1280                 pid_t pid,
1281                 const char *slice,
1282                 const char *description,
1283                 sd_bus_message *more_properties,
1284                 sd_bus_error *error,
1285                 char **job) {
1286
1287         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
1288         int r;
1289
1290         assert(manager);
1291         assert(scope);
1292         assert(pid > 1);
1293
1294         r = sd_bus_message_new_method_call(
1295                         manager->bus,
1296                         &m,
1297                         "org.freedesktop.systemd1",
1298                         "/org/freedesktop/systemd1",
1299                         "org.freedesktop.systemd1.Manager",
1300                         "StartTransientUnit");
1301         if (r < 0)
1302                 return r;
1303
1304         r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
1305         if (r < 0)
1306                 return r;
1307
1308         r = sd_bus_message_open_container(m, 'a', "(sv)");
1309         if (r < 0)
1310                 return r;
1311
1312         if (!isempty(slice)) {
1313                 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
1314                 if (r < 0)
1315                         return r;
1316         }
1317
1318         if (!isempty(description)) {
1319                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
1320                 if (r < 0)
1321                         return r;
1322         }
1323
1324         r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, pid);
1325         if (r < 0)
1326                 return r;
1327
1328         r = sd_bus_message_append(m, "(sv)", "Delegate", "b", 1);
1329         if (r < 0)
1330                 return r;
1331
1332         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", UINT64_C(16384));
1333         if (r < 0)
1334                 return bus_log_create_error(r);
1335
1336         if (more_properties) {
1337                 r = sd_bus_message_copy(m, more_properties, true);
1338                 if (r < 0)
1339                         return r;
1340         }
1341
1342         r = sd_bus_message_close_container(m);
1343         if (r < 0)
1344                 return r;
1345
1346         r = sd_bus_message_append(m, "a(sa(sv))", 0);
1347         if (r < 0)
1348                 return r;
1349
1350         r = sd_bus_call(manager->bus, m, 0, error, &reply);
1351         if (r < 0)
1352                 return r;
1353
1354         if (job) {
1355                 const char *j;
1356                 char *copy;
1357
1358                 r = sd_bus_message_read(reply, "o", &j);
1359                 if (r < 0)
1360                         return r;
1361
1362                 copy = strdup(j);
1363                 if (!copy)
1364                         return -ENOMEM;
1365
1366                 *job = copy;
1367         }
1368
1369         return 1;
1370 }
1371
1372 int manager_stop_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
1373         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1374         int r;
1375
1376         assert(manager);
1377         assert(unit);
1378
1379         r = sd_bus_call_method(
1380                         manager->bus,
1381                         "org.freedesktop.systemd1",
1382                         "/org/freedesktop/systemd1",
1383                         "org.freedesktop.systemd1.Manager",
1384                         "StopUnit",
1385                         error,
1386                         &reply,
1387                         "ss", unit, "fail");
1388         if (r < 0) {
1389                 if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) ||
1390                     sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED)) {
1391
1392                         if (job)
1393                                 *job = NULL;
1394
1395                         sd_bus_error_free(error);
1396                         return 0;
1397                 }
1398
1399                 return r;
1400         }
1401
1402         if (job) {
1403                 const char *j;
1404                 char *copy;
1405
1406                 r = sd_bus_message_read(reply, "o", &j);
1407                 if (r < 0)
1408                         return r;
1409
1410                 copy = strdup(j);
1411                 if (!copy)
1412                         return -ENOMEM;
1413
1414                 *job = copy;
1415         }
1416
1417         return 1;
1418 }
1419
1420 int manager_kill_unit(Manager *manager, const char *unit, int signo, sd_bus_error *error) {
1421         assert(manager);
1422         assert(unit);
1423
1424         return sd_bus_call_method(
1425                         manager->bus,
1426                         "org.freedesktop.systemd1",
1427                         "/org/freedesktop/systemd1",
1428                         "org.freedesktop.systemd1.Manager",
1429                         "KillUnit",
1430                         error,
1431                         NULL,
1432                         "ssi", unit, "all", signo);
1433 }
1434
1435 int manager_unit_is_active(Manager *manager, const char *unit) {
1436         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1437         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1438         _cleanup_free_ char *path = NULL;
1439         const char *state;
1440         int r;
1441
1442         assert(manager);
1443         assert(unit);
1444
1445         path = unit_dbus_path_from_name(unit);
1446         if (!path)
1447                 return -ENOMEM;
1448
1449         r = sd_bus_get_property(
1450                         manager->bus,
1451                         "org.freedesktop.systemd1",
1452                         path,
1453                         "org.freedesktop.systemd1.Unit",
1454                         "ActiveState",
1455                         &error,
1456                         &reply,
1457                         "s");
1458         if (r < 0) {
1459                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
1460                     sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
1461                         return true;
1462
1463                 if (sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT) ||
1464                     sd_bus_error_has_name(&error, BUS_ERROR_LOAD_FAILED))
1465                         return false;
1466
1467                 return r;
1468         }
1469
1470         r = sd_bus_message_read(reply, "s", &state);
1471         if (r < 0)
1472                 return -EINVAL;
1473
1474         return !STR_IN_SET(state, "inactive", "failed");
1475 }
1476
1477 int manager_job_is_active(Manager *manager, const char *path) {
1478         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1479         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1480         int r;
1481
1482         assert(manager);
1483         assert(path);
1484
1485         r = sd_bus_get_property(
1486                         manager->bus,
1487                         "org.freedesktop.systemd1",
1488                         path,
1489                         "org.freedesktop.systemd1.Job",
1490                         "State",
1491                         &error,
1492                         &reply,
1493                         "s");
1494         if (r < 0) {
1495                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
1496                     sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
1497                         return true;
1498
1499                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
1500                         return false;
1501
1502                 return r;
1503         }
1504
1505         /* We don't actually care about the state really. The fact
1506          * that we could read the job state is enough for us */
1507
1508         return true;
1509 }
1510
1511 int manager_get_machine_by_pid(Manager *m, pid_t pid, Machine **machine) {
1512         Machine *mm;
1513         int r;
1514
1515         assert(m);
1516         assert(pid >= 1);
1517         assert(machine);
1518
1519         mm = hashmap_get(m->machine_leaders, PID_TO_PTR(pid));
1520         if (!mm) {
1521                 _cleanup_free_ char *unit = NULL;
1522
1523                 r = cg_pid_get_unit(pid, &unit);
1524                 if (r >= 0)
1525                         mm = hashmap_get(m->machine_units, unit);
1526         }
1527         if (!mm)
1528                 return 0;
1529
1530         *machine = mm;
1531         return 1;
1532 }
1533
1534 int manager_add_machine(Manager *m, const char *name, Machine **_machine) {
1535         Machine *machine;
1536
1537         assert(m);
1538         assert(name);
1539
1540         machine = hashmap_get(m->machines, name);
1541         if (!machine) {
1542                 machine = machine_new(m, _MACHINE_CLASS_INVALID, name);
1543                 if (!machine)
1544                         return -ENOMEM;
1545         }
1546
1547         if (_machine)
1548                 *_machine = machine;
1549
1550         return 0;
1551 }