load-fragment.c

   1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2010 Lennart Poettering
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU General Public License as published by
  10   the Free Software Foundation; either version 2 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include <linux/oom.h>
  23 #include <assert.h>
  24 #include <errno.h>
  25 #include <string.h>
  26 #include <unistd.h>
  27 #include <fcntl.h>
  28 #include <sched.h>
  29 #include <sys/prctl.h>
  30
  31 #include "unit.h"
  32 #include "strv.h"
  33 #include "conf-parser.h"
  34 #include "load-fragment.h"
  35 #include "log.h"
  36 #include "ioprio.h"
  37 #include "securebits.h"
  38 #include "missing.h"
  39 #include "unit-name.h"
  40
  41 #define DEFINE_CONFIG_PARSE_ENUM(function,name,type,msg)                \
  42         static int function(                                            \
  43                         const char *filename,                           \
  44                         unsigned line,                                  \
  45                         const char *section,                            \
  46                         const char *lvalue,                             \
  47                         const char *rvalue,                             \
  48                         void *data,                                     \
  49                         void *userdata) {                               \
  50                                                                         \
  51                 type *i = data, x;                                      \
  52                                                                         \
  53                 assert(filename);                                       \
  54                 assert(lvalue);                                         \
  55                 assert(rvalue);                                         \
  56                 assert(data);                                           \
  57                                                                         \
  58                 if ((x = name##_from_string(rvalue)) < 0) {             \
  59                         log_error("[%s:%u] " msg ": %s", filename, line, rvalue); \
  60                         return -EBADMSG;                                \
  61                 }                                                       \
  62                                                                         \
  63                 *i = x;                                                 \
  64                                                                         \
  65                 return 0;                                               \
  66         }
  67
  68 static int config_parse_deps(
  69                 const char *filename,
  70                 unsigned line,
  71                 const char *section,
  72                 const char *lvalue,
  73                 const char *rvalue,
  74                 void *data,
  75                 void *userdata) {
  76
  77         UnitDependency d = PTR_TO_UINT(data);
  78         Unit *u = userdata;
  79         char *w;
  80         size_t l;
  81         char *state;
  82
  83         assert(filename);
  84         assert(lvalue);
  85         assert(rvalue);
  86
  87         FOREACH_WORD(w, l, rvalue, state) {
  88                 char *t, *k;
  89                 int r;
  90
  91                 if (!(t = strndup(w, l)))
  92                         return -ENOMEM;
  93
  94                 k = unit_name_printf(u, t);
  95                 free(t);
  96
  97                 if (!k)
  98                         return -ENOMEM;
  99
 100                 r = unit_add_dependency_by_name(u, d, k, NULL, true);
 101                 free(k);
 102
 103                 if (r < 0)
 104                         return r;
 105         }
 106
 107         return 0;
 108 }
 109
 110 static int config_parse_names(
 111                 const char *filename,
 112                 unsigned line,
 113                 const char *section,
 114                 const char *lvalue,
 115                 const char *rvalue,
 116                 void *data,
 117                 void *userdata) {
 118
 119         Unit *u = userdata;
 120         char *w;
 121         size_t l;
 122         char *state;
 123
 124         assert(filename);
 125         assert(lvalue);
 126         assert(rvalue);
 127         assert(data);
 128
 129         FOREACH_WORD(w, l, rvalue, state) {
 130                 char *t, *k;
 131                 int r;
 132
 133                 if (!(t = strndup(w, l)))
 134                         return -ENOMEM;
 135
 136                 k = unit_name_printf(u, t);
 137                 free(t);
 138
 139                 if (!k)
 140                         return -ENOMEM;
 141
 142                 r = unit_merge_by_name(u, k);
 143                 free(k);
 144
 145                 if (r < 0)
 146                         return r;
 147         }
 148
 149         return 0;
 150 }
 151
 152 static int config_parse_listen(
 153                 const char *filename,
 154                 unsigned line,
 155                 const char *section,
 156                 const char *lvalue,
 157                 const char *rvalue,
 158                 void *data,
 159                 void *userdata) {
 160
 161         int r;
 162         SocketPort *p;
 163         Socket *s;
 164
 165         assert(filename);
 166         assert(lvalue);
 167         assert(rvalue);
 168         assert(data);
 169
 170         s = (Socket*) data;
 171
 172         if (!(p = new0(SocketPort, 1)))
 173                 return -ENOMEM;
 174
 175         if (streq(lvalue, "ListenFIFO")) {
 176                 p->type = SOCKET_FIFO;
 177
 178                 if (!(p->path = strdup(rvalue))) {
 179                         free(p);
 180                         return -ENOMEM;
 181                 }
 182         } else {
 183                 p->type = SOCKET_SOCKET;
 184
 185                 if ((r = socket_address_parse(&p->address, rvalue)) < 0) {
 186                         log_error("[%s:%u] Failed to parse address value: %s", filename, line, rvalue);
 187                         free(p);
 188                         return r;
 189                 }
 190
 191                 if (streq(lvalue, "ListenStream"))
 192                         p->address.type = SOCK_STREAM;
 193                 else if (streq(lvalue, "ListenDatagram"))
 194                         p->address.type = SOCK_DGRAM;
 195                 else {
 196                         assert(streq(lvalue, "ListenSequentialPacket"));
 197                         p->address.type = SOCK_SEQPACKET;
 198                 }
 199
 200                 if (socket_address_family(&p->address) != AF_LOCAL && p->address.type == SOCK_SEQPACKET) {
 201                         free(p);
 202                         return -EPROTONOSUPPORT;
 203                 }
 204         }
 205
 206         p->fd = -1;
 207         LIST_PREPEND(SocketPort, port, s->ports, p);
 208
 209         return 0;
 210 }
 211
 212 static int config_parse_socket_bind(
 213                 const char *filename,
 214                 unsigned line,
 215                 const char *section,
 216                 const char *lvalue,
 217                 const char *rvalue,
 218                 void *data,
 219                 void *userdata) {
 220
 221         int r;
 222         Socket *s;
 223
 224         assert(filename);
 225         assert(lvalue);
 226         assert(rvalue);
 227         assert(data);
 228
 229         s = (Socket*) data;
 230
 231         if ((r = parse_boolean(rvalue)) < 0) {
 232                 log_error("[%s:%u] Failed to parse bind IPv6 only value: %s", filename, line, rvalue);
 233                 return r;
 234         }
 235
 236         s->bind_ipv6_only = r ? SOCKET_ADDRESS_IPV6_ONLY : SOCKET_ADDRESS_BOTH;
 237
 238         return 0;
 239 }
 240
 241 static int config_parse_nice(
 242                 const char *filename,
 243                 unsigned line,
 244                 const char *section,
 245                 const char *lvalue,
 246                 const char *rvalue,
 247                 void *data,
 248                 void *userdata) {
 249
 250         ExecContext *c = data;
 251         int priority, r;
 252
 253         assert(filename);
 254         assert(lvalue);
 255         assert(rvalue);
 256         assert(data);
 257
 258         if ((r = safe_atoi(rvalue, &priority)) < 0) {
 259                 log_error("[%s:%u] Failed to parse nice priority: %s", filename, line, rvalue);
 260                 return r;
 261         }
 262
 263         if (priority < PRIO_MIN || priority >= PRIO_MAX) {
 264                 log_error("[%s:%u] Nice priority out of range: %s", filename, line, rvalue);
 265                 return -ERANGE;
 266         }
 267
 268         c->nice = priority;
 269         c->nice_set = false;
 270
 271         return 0;
 272 }
 273
 274 static int config_parse_oom_adjust(
 275                 const char *filename,
 276                 unsigned line,
 277                 const char *section,
 278                 const char *lvalue,
 279                 const char *rvalue,
 280                 void *data,
 281                 void *userdata) {
 282
 283         ExecContext *c = data;
 284         int oa, r;
 285
 286         assert(filename);
 287         assert(lvalue);
 288         assert(rvalue);
 289         assert(data);
 290
 291         if ((r = safe_atoi(rvalue, &oa)) < 0) {
 292                 log_error("[%s:%u] Failed to parse OOM adjust value: %s", filename, line, rvalue);
 293                 return r;
 294         }
 295
 296         if (oa < OOM_DISABLE || oa > OOM_ADJUST_MAX) {
 297                 log_error("[%s:%u] OOM adjust value out of range: %s", filename, line, rvalue);
 298                 return -ERANGE;
 299         }
 300
 301         c->oom_adjust = oa;
 302         c->oom_adjust_set = true;
 303
 304         return 0;
 305 }
 306
 307 static int config_parse_mode(
 308                 const char *filename,
 309                 unsigned line,
 310                 const char *section,
 311                 const char *lvalue,
 312                 const char *rvalue,
 313                 void *data,
 314                 void *userdata) {
 315
 316         mode_t *m = data;
 317         long l;
 318         char *x = NULL;
 319
 320         assert(filename);
 321         assert(lvalue);
 322         assert(rvalue);
 323         assert(data);
 324
 325         errno = 0;
 326         l = strtol(rvalue, &x, 8);
 327         if (!x || *x || errno) {
 328                 log_error("[%s:%u] Failed to parse mode value: %s", filename, line, rvalue);
 329                 return errno ? -errno : -EINVAL;
 330         }
 331
 332         if (l < 0000 || l > 07777) {
 333                 log_error("[%s:%u] mode value out of range: %s", filename, line, rvalue);
 334                 return -ERANGE;
 335         }
 336
 337         *m = (mode_t) l;
 338         return 0;
 339 }
 340
 341 static int config_parse_exec(
 342                 const char *filename,
 343                 unsigned line,
 344                 const char *section,
 345                 const char *lvalue,
 346                 const char *rvalue,
 347                 void *data,
 348                 void *userdata) {
 349
 350         ExecCommand **e = data, *nce = NULL;
 351         char **n;
 352         char *w;
 353         unsigned k;
 354         size_t l;
 355         char *state;
 356
 357         assert(filename);
 358         assert(lvalue);
 359         assert(rvalue);
 360         assert(data);
 361
 362         k = 0;
 363         FOREACH_WORD_QUOTED(w, l, rvalue, state)
 364                 k++;
 365
 366         if (!(n = new(char*, k+1)))
 367                 return -ENOMEM;
 368
 369         k = 0;
 370         FOREACH_WORD_QUOTED(w, l, rvalue, state)
 371                 if (!(n[k++] = strndup(w, l)))
 372                         goto fail;
 373
 374         n[k] = NULL;
 375
 376         if (!n[0] || !path_is_absolute(n[0])) {
 377                 log_error("[%s:%u] Invalid executable path in command line: %s", filename, line, rvalue);
 378                 strv_free(n);
 379                 return -EINVAL;
 380         }
 381
 382         if (!(nce = new0(ExecCommand, 1)))
 383                 goto fail;
 384
 385         nce->argv = n;
 386         if (!(nce->path = strdup(n[0])))
 387                 goto fail;
 388
 389         exec_command_append_list(e, nce);
 390
 391         return 0;
 392
 393 fail:
 394         for (; k > 0; k--)
 395                 free(n[k-1]);
 396         free(n);
 397
 398         free(nce);
 399
 400         return -ENOMEM;
 401 }
 402
 403 static int config_parse_usec(
 404                 const char *filename,
 405                 unsigned line,
 406                 const char *section,
 407                 const char *lvalue,
 408                 const char *rvalue,
 409                 void *data,
 410                 void *userdata) {
 411
 412         usec_t *usec = data;
 413         unsigned long long u;
 414         int r;
 415
 416         assert(filename);
 417         assert(lvalue);
 418         assert(rvalue);
 419         assert(data);
 420
 421         if ((r = safe_atollu(rvalue, &u)) < 0) {
 422                 log_error("[%s:%u] Failed to parse time value: %s", filename, line, rvalue);
 423                 return r;
 424         }
 425
 426         /* We actually assume the user configures seconds. Later on we
 427          * might choose to support suffixes for time values, to
 428          * configure bigger or smaller units */
 429
 430         *usec = u * USEC_PER_SEC;
 431
 432         return 0;
 433 }
 434
 435 DEFINE_CONFIG_PARSE_ENUM(config_parse_service_type, service_type, ServiceType, "Failed to parse service type");
 436 DEFINE_CONFIG_PARSE_ENUM(config_parse_service_restart, service_restart, ServiceRestart, "Failed to parse service restart specifier");
 437
 438 static int config_parse_bindtodevice(
 439                 const char *filename,
 440                 unsigned line,
 441                 const char *section,
 442                 const char *lvalue,
 443                 const char *rvalue,
 444                 void *data,
 445                 void *userdata) {
 446
 447         Socket *s = data;
 448         char *n;
 449
 450         assert(filename);
 451         assert(lvalue);
 452         assert(rvalue);
 453         assert(data);
 454
 455         if (rvalue[0] && !streq(rvalue, "*")) {
 456                 if (!(n = strdup(rvalue)))
 457                         return -ENOMEM;
 458         } else
 459                 n = NULL;
 460
 461         free(s->bind_to_device);
 462         s->bind_to_device = n;
 463
 464         return 0;
 465 }
 466
 467 DEFINE_CONFIG_PARSE_ENUM(config_parse_output, exec_output, ExecOutput, "Failed to parse output specifier");
 468 DEFINE_CONFIG_PARSE_ENUM(config_parse_input, exec_input, ExecInput, "Failed to parse input specifier");
 469
 470 static int config_parse_facility(
 471                 const char *filename,
 472                 unsigned line,
 473                 const char *section,
 474                 const char *lvalue,
 475                 const char *rvalue,
 476                 void *data,
 477                 void *userdata) {
 478
 479
 480         int *o = data, x;
 481
 482         assert(filename);
 483         assert(lvalue);
 484         assert(rvalue);
 485         assert(data);
 486
 487         if ((x = log_facility_from_string(rvalue)) < 0) {
 488                 log_error("[%s:%u] Failed to parse log facility: %s", filename, line, rvalue);
 489                 return -EBADMSG;
 490         }
 491
 492         *o = LOG_MAKEPRI(x, LOG_PRI(*o));
 493
 494         return 0;
 495 }
 496
 497 static int config_parse_level(
 498                 const char *filename,
 499                 unsigned line,
 500                 const char *section,
 501                 const char *lvalue,
 502                 const char *rvalue,
 503                 void *data,
 504                 void *userdata) {
 505
 506
 507         int *o = data, x;
 508
 509         assert(filename);
 510         assert(lvalue);
 511         assert(rvalue);
 512         assert(data);
 513
 514         if ((x = log_level_from_string(rvalue)) < 0) {
 515                 log_error("[%s:%u] Failed to parse log level: %s", filename, line, rvalue);
 516                 return -EBADMSG;
 517         }
 518
 519         *o = LOG_MAKEPRI(LOG_FAC(*o), x);
 520         return 0;
 521 }
 522
 523 static int config_parse_io_class(
 524                 const char *filename,
 525                 unsigned line,
 526                 const char *section,
 527                 const char *lvalue,
 528                 const char *rvalue,
 529                 void *data,
 530                 void *userdata) {
 531
 532         ExecContext *c = data;
 533         int x;
 534
 535         assert(filename);
 536         assert(lvalue);
 537         assert(rvalue);
 538         assert(data);
 539
 540         if ((x = ioprio_class_from_string(rvalue)) < 0) {
 541                 log_error("[%s:%u] Failed to parse IO scheduling class: %s", filename, line, rvalue);
 542                 return -EBADMSG;
 543         }
 544
 545         c->ioprio = IOPRIO_PRIO_VALUE(x, IOPRIO_PRIO_DATA(c->ioprio));
 546         c->ioprio_set = true;
 547
 548         return 0;
 549 }
 550
 551 static int config_parse_io_priority(
 552                 const char *filename,
 553                 unsigned line,
 554                 const char *section,
 555                 const char *lvalue,
 556                 const char *rvalue,
 557                 void *data,
 558                 void *userdata) {
 559
 560         ExecContext *c = data;
 561         int i;
 562
 563         assert(filename);
 564         assert(lvalue);
 565         assert(rvalue);
 566         assert(data);
 567
 568         if (safe_atoi(rvalue, &i) < 0 || i < 0 || i >= IOPRIO_BE_NR) {
 569                 log_error("[%s:%u] Failed to parse io priority: %s", filename, line, rvalue);
 570                 return -EBADMSG;
 571         }
 572
 573         c->ioprio = IOPRIO_PRIO_VALUE(IOPRIO_PRIO_CLASS(c->ioprio), i);
 574         c->ioprio_set = true;
 575
 576         return 0;
 577 }
 578
 579 static int config_parse_cpu_sched_policy(
 580                 const char *filename,
 581                 unsigned line,
 582                 const char *section,
 583                 const char *lvalue,
 584                 const char *rvalue,
 585                 void *data,
 586                 void *userdata) {
 587
 588
 589         ExecContext *c = data;
 590         int x;
 591
 592         assert(filename);
 593         assert(lvalue);
 594         assert(rvalue);
 595         assert(data);
 596
 597         if ((x = sched_policy_from_string(rvalue)) < 0) {
 598                 log_error("[%s:%u] Failed to parse CPU scheduling policy: %s", filename, line, rvalue);
 599                 return -EBADMSG;
 600         }
 601
 602         c->cpu_sched_policy = x;
 603         c->cpu_sched_set = true;
 604
 605         return 0;
 606 }
 607
 608 static int config_parse_cpu_sched_prio(
 609                 const char *filename,
 610                 unsigned line,
 611                 const char *section,
 612                 const char *lvalue,
 613                 const char *rvalue,
 614                 void *data,
 615                 void *userdata) {
 616
 617         ExecContext *c = data;
 618         int i;
 619
 620         assert(filename);
 621         assert(lvalue);
 622         assert(rvalue);
 623         assert(data);
 624
 625         /* On Linux RR/FIFO have the same range */
 626         if (safe_atoi(rvalue, &i) < 0 || i < sched_get_priority_min(SCHED_RR) || i > sched_get_priority_max(SCHED_RR)) {
 627                 log_error("[%s:%u] Failed to parse CPU scheduling priority: %s", filename, line, rvalue);
 628                 return -EBADMSG;
 629         }
 630
 631         c->cpu_sched_priority = i;
 632         c->cpu_sched_set = true;
 633
 634         return 0;
 635 }
 636
 637 static int config_parse_cpu_affinity(
 638                 const char *filename,
 639                 unsigned line,
 640                 const char *section,
 641                 const char *lvalue,
 642                 const char *rvalue,
 643                 void *data,
 644                 void *userdata) {
 645
 646         ExecContext *c = data;
 647         char *w;
 648         size_t l;
 649         char *state;
 650
 651         assert(filename);
 652         assert(lvalue);
 653         assert(rvalue);
 654         assert(data);
 655
 656         FOREACH_WORD(w, l, rvalue, state) {
 657                 char *t;
 658                 int r;
 659                 unsigned cpu;
 660
 661                 if (!(t = strndup(w, l)))
 662                         return -ENOMEM;
 663
 664                 r = safe_atou(t, &cpu);
 665                 free(t);
 666
 667                 if (r < 0 || cpu >= CPU_SETSIZE) {
 668                         log_error("[%s:%u] Failed to parse CPU affinity: %s", filename, line, rvalue);
 669                         return -EBADMSG;
 670                 }
 671
 672                 CPU_SET(cpu, &c->cpu_affinity);
 673         }
 674
 675         c->cpu_affinity_set = true;
 676
 677         return 0;
 678 }
 679
 680 static int config_parse_capabilities(
 681                 const char *filename,
 682                 unsigned line,
 683                 const char *section,
 684                 const char *lvalue,
 685                 const char *rvalue,
 686                 void *data,
 687                 void *userdata) {
 688
 689         ExecContext *c = data;
 690         cap_t cap;
 691
 692         assert(filename);
 693         assert(lvalue);
 694         assert(rvalue);
 695         assert(data);
 696
 697         if (!(cap = cap_from_text(rvalue))) {
 698                 if (errno == ENOMEM)
 699                         return -ENOMEM;
 700
 701                 log_error("[%s:%u] Failed to parse capabilities: %s", filename, line, rvalue);
 702                 return -EBADMSG;
 703         }
 704
 705         if (c->capabilities)
 706                 cap_free(c->capabilities);
 707         c->capabilities = cap;
 708
 709         return 0;
 710 }
 711
 712 static int config_parse_secure_bits(
 713                 const char *filename,
 714                 unsigned line,
 715                 const char *section,
 716                 const char *lvalue,
 717                 const char *rvalue,
 718                 void *data,
 719                 void *userdata) {
 720
 721         ExecContext *c = data;
 722         char *w;
 723         size_t l;
 724         char *state;
 725
 726         assert(filename);
 727         assert(lvalue);
 728         assert(rvalue);
 729         assert(data);
 730
 731         FOREACH_WORD(w, l, rvalue, state) {
 732                 if (first_word(w, "keep-caps"))
 733                         c->secure_bits |= SECURE_KEEP_CAPS;
 734                 else if (first_word(w, "keep-caps-locked"))
 735                         c->secure_bits |= SECURE_KEEP_CAPS_LOCKED;
 736                 else if (first_word(w, "no-setuid-fixup"))
 737                         c->secure_bits |= SECURE_NO_SETUID_FIXUP;
 738                 else if (first_word(w, "no-setuid-fixup-locked"))
 739                         c->secure_bits |= SECURE_NO_SETUID_FIXUP_LOCKED;
 740                 else if (first_word(w, "noroot"))
 741                         c->secure_bits |= SECURE_NOROOT;
 742                 else if (first_word(w, "noroot-locked"))
 743                         c->secure_bits |= SECURE_NOROOT_LOCKED;
 744                 else {
 745                         log_error("[%s:%u] Failed to parse secure bits: %s", filename, line, rvalue);
 746                         return -EBADMSG;
 747                 }
 748         }
 749
 750         return 0;
 751 }
 752
 753 static int config_parse_bounding_set(
 754                 const char *filename,
 755                 unsigned line,
 756                 const char *section,
 757                 const char *lvalue,
 758                 const char *rvalue,
 759                 void *data,
 760                 void *userdata) {
 761
 762         ExecContext *c = data;
 763         char *w;
 764         size_t l;
 765         char *state;
 766
 767         assert(filename);
 768         assert(lvalue);
 769         assert(rvalue);
 770         assert(data);
 771
 772         FOREACH_WORD(w, l, rvalue, state) {
 773                 char *t;
 774                 int r;
 775                 cap_value_t cap;
 776
 777                 if (!(t = strndup(w, l)))
 778                         return -ENOMEM;
 779
 780                 r = cap_from_name(t, &cap);
 781                 free(t);
 782
 783                 if (r < 0) {
 784                         log_error("[%s:%u] Failed to parse capability bounding set: %s", filename, line, rvalue);
 785                         return -EBADMSG;
 786                 }
 787
 788                 c->capability_bounding_set_drop |= 1 << cap;
 789         }
 790
 791         return 0;
 792 }
 793
 794 static int config_parse_timer_slack_ns(
 795                 const char *filename,
 796                 unsigned line,
 797                 const char *section,
 798                 const char *lvalue,
 799                 const char *rvalue,
 800                 void *data,
 801                 void *userdata) {
 802
 803         ExecContext *c = data;
 804         unsigned long u;
 805         int r;
 806
 807         assert(filename);
 808         assert(lvalue);
 809         assert(rvalue);
 810         assert(data);
 811
 812         if ((r = safe_atolu(rvalue, &u)) < 0) {
 813                 log_error("[%s:%u] Failed to parse time slack value: %s", filename, line, rvalue);
 814                 return r;
 815         }
 816
 817         c->timer_slack_ns = u;
 818
 819         return 0;
 820 }
 821
 822 static int config_parse_limit(
 823                 const char *filename,
 824                 unsigned line,
 825                 const char *section,
 826                 const char *lvalue,
 827                 const char *rvalue,
 828                 void *data,
 829                 void *userdata) {
 830
 831         struct rlimit **rl = data;
 832         unsigned long long u;
 833         int r;
 834
 835         assert(filename);
 836         assert(lvalue);
 837         assert(rvalue);
 838         assert(data);
 839
 840         if ((r = safe_atollu(rvalue, &u)) < 0) {
 841                 log_error("[%s:%u] Failed to parse resource value: %s", filename, line, rvalue);
 842                 return r;
 843         }
 844
 845         if (!*rl)
 846                 if (!(*rl = new(struct rlimit, 1)))
 847                         return -ENOMEM;
 848
 849         (*rl)->rlim_cur = (*rl)->rlim_max = (rlim_t) u;
 850         return 0;
 851 }
 852
 853 static int config_parse_cgroup(
 854                 const char *filename,
 855                 unsigned line,
 856                 const char *section,
 857                 const char *lvalue,
 858                 const char *rvalue,
 859                 void *data,
 860                 void *userdata) {
 861
 862         Unit *u = userdata;
 863         char *w;
 864         size_t l;
 865         char *state;
 866
 867         FOREACH_WORD(w, l, rvalue, state) {
 868                 char *t;
 869                 int r;
 870
 871                 if (!(t = strndup(w, l)))
 872                         return -ENOMEM;
 873
 874                 r = unit_add_cgroup_from_text(u, t);
 875                 free(t);
 876
 877                 if (r < 0)
 878                         return r;
 879         }
 880
 881         return 0;
 882 }
 883
 884 static int config_parse_sysv_priority(
 885                 const char *filename,
 886                 unsigned line,
 887                 const char *section,
 888                 const char *lvalue,
 889                 const char *rvalue,
 890                 void *data,
 891                 void *userdata) {
 892
 893         int *priority = data;
 894         int r, i;
 895
 896         assert(filename);
 897         assert(lvalue);
 898         assert(rvalue);
 899         assert(data);
 900
 901         if ((r = safe_atoi(rvalue, &i)) < 0 || i < 0) {
 902                 log_error("[%s:%u] Failed to parse SysV start priority: %s", filename, line, rvalue);
 903                 return r;
 904         }
 905
 906         *priority = (int) i;
 907         return 0;
 908 }
 909
 910 DEFINE_CONFIG_PARSE_ENUM(config_parse_kill_mode, kill_mode, KillMode, "Failed to parse kill mode");
 911
 912 #define FOLLOW_MAX 8
 913
 914 static int open_follow(char **filename, FILE **_f, Set *names, char **_final) {
 915         unsigned c = 0;
 916         int fd, r;
 917         FILE *f;
 918         char *id = NULL;
 919
 920         assert(filename);
 921         assert(*filename);
 922         assert(_f);
 923         assert(names);
 924
 925         /* This will update the filename pointer if the loaded file is
 926          * reached by a symlink. The old string will be freed. */
 927
 928         for (;;) {
 929                 char *target, *k, *name;
 930
 931                 if (c++ >= FOLLOW_MAX)
 932                         return -ELOOP;
 933
 934                 path_kill_slashes(*filename);
 935
 936                 /* Add the file name we are currently looking at to
 937                  * the names of this unit */
 938                 name = file_name_from_path(*filename);
 939                 if (!(id = set_get(names, name))) {
 940
 941                         if (!(id = strdup(name)))
 942                                 return -ENOMEM;
 943
 944                         if ((r = set_put(names, id)) < 0) {
 945                                 free(id);
 946                                 return r;
 947                         }
 948                 }
 949
 950                 /* Try to open the file name, but don't if its a symlink */
 951                 if ((fd = open(*filename, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW)) >= 0)
 952                         break;
 953
 954                 if (errno != ELOOP)
 955                         return -errno;
 956
 957                 /* Hmm, so this is a symlink. Let's read the name, and follow it manually */
 958                 if ((r = readlink_malloc(*filename, &target)) < 0)
 959                         return r;
 960
 961                 k = file_in_same_dir(*filename, target);
 962                 free(target);
 963
 964                 if (!k)
 965                         return -ENOMEM;
 966
 967                 free(*filename);
 968                 *filename = k;
 969         }
 970
 971         if (!(f = fdopen(fd, "r"))) {
 972                 r = -errno;
 973                 close_nointr_nofail(fd);
 974                 return r;
 975         }
 976
 977         *_f = f;
 978         *_final = id;
 979         return 0;
 980 }
 981
 982 static int merge_by_names(Unit **u, Set *names, const char *id) {
 983         char *k;
 984         int r;
 985
 986         assert(u);
 987         assert(*u);
 988         assert(names);
 989
 990         /* Let's try to add in all symlink names we found */
 991         while ((k = set_steal_first(names))) {
 992
 993                 /* First try to merge in the other name into our
 994                  * unit */
 995                 if ((r = unit_merge_by_name(*u, k)) < 0) {
 996                         Unit *other;
 997
 998                         /* Hmm, we couldn't merge the other unit into
 999                          * ours? Then let's try it the other way
1000                          * round */
1001
1002                         other = manager_get_unit((*u)->meta.manager, k);
1003                         free(k);
1004
1005                         if (other)
1006                                 if ((r = unit_merge(other, *u)) >= 0) {
1007                                         *u = other;
1008                                         return merge_by_names(u, names, NULL);
1009                                 }
1010
1011                         return r;
1012                 }
1013
1014                 if (id == k)
1015                         unit_choose_id(*u, id);
1016
1017                 free(k);
1018         }
1019
1020         return 0;
1021 }
1022
1023 static void dump_items(FILE *f, const ConfigItem *items) {
1024         const ConfigItem *i;
1025         const char *prev_section = NULL;
1026         bool not_first = false;
1027
1028         struct {
1029                 ConfigParserCallback callback;
1030                 const char *rvalue;
1031         } table[] = {
1032                 { config_parse_int,              "INTEGER" },
1033                 { config_parse_unsigned,         "UNSIGNED" },
1034                 { config_parse_size,             "SIZE" },
1035                 { config_parse_bool,             "BOOLEAN" },
1036                 { config_parse_string,           "STRING" },
1037                 { config_parse_path,             "PATH" },
1038                 { config_parse_strv,             "STRING [...]" },
1039                 { config_parse_nice,             "NICE" },
1040                 { config_parse_oom_adjust,       "OOMADJUST" },
1041                 { config_parse_io_class,         "IOCLASS" },
1042                 { config_parse_io_priority,      "IOPRIORITY" },
1043                 { config_parse_cpu_sched_policy, "CPUSCHEDPOLICY" },
1044                 { config_parse_cpu_sched_prio,   "CPUSCHEDPRIO" },
1045                 { config_parse_cpu_affinity,     "CPUAFFINITY" },
1046                 { config_parse_mode,             "MODE" },
1047                 { config_parse_output,           "OUTPUT" },
1048                 { config_parse_input,            "INPUT" },
1049                 { config_parse_facility,         "FACILITY" },
1050                 { config_parse_level,            "LEVEL" },
1051                 { config_parse_capabilities,     "CAPABILITIES" },
1052                 { config_parse_secure_bits,      "SECUREBITS" },
1053                 { config_parse_bounding_set,     "BOUNDINGSET" },
1054                 { config_parse_timer_slack_ns,   "TIMERSLACK" },
1055                 { config_parse_limit,            "LIMIT" },
1056                 { config_parse_cgroup,           "CGROUP [...]" },
1057                 { config_parse_deps,             "UNIT [...]" },
1058                 { config_parse_names,            "UNIT [...]" },
1059                 { config_parse_exec,             "PATH [ARGUMENT [...]]" },
1060                 { config_parse_service_type,     "SERVICETYPE" },
1061                 { config_parse_service_restart,  "SERVICERESTART" },
1062                 { config_parse_sysv_priority,    "SYSVPRIORITY" },
1063                 { config_parse_kill_mode,        "KILLMODE" },
1064                 { config_parse_listen,           "SOCKET [...]" },
1065                 { config_parse_socket_bind,      "SOCKETBIND" },
1066                 { config_parse_bindtodevice,     "NETWORKINTERFACE" }
1067         };
1068
1069         assert(f);
1070         assert(items);
1071
1072         for (i = items; i->lvalue; i++) {
1073                 unsigned j;
1074                 const char *rvalue = "OTHER";
1075
1076                 if (!streq_ptr(i->section, prev_section)) {
1077                         if (!not_first)
1078                                 not_first = true;
1079                         else
1080                                 fputc('\n', f);
1081
1082                         fprintf(f, "[%s]\n", i->section);
1083                         prev_section = i->section;
1084                 }
1085
1086                 for (j = 0; j < ELEMENTSOF(table); j++)
1087                         if (i->parse == table[j].callback) {
1088                                 rvalue = table[j].rvalue;
1089                                 break;
1090                         }
1091
1092                 fprintf(f, "%s=%s\n", i->lvalue, rvalue);
1093         }
1094 }
1095
1096 static int load_from_path(Unit *u, const char *path) {
1097
1098         static const char* const section_table[_UNIT_TYPE_MAX] = {
1099                 [UNIT_SERVICE]   = "Service",
1100                 [UNIT_TIMER]     = "Timer",
1101                 [UNIT_SOCKET]    = "Socket",
1102                 [UNIT_TARGET]    = "Target",
1103                 [UNIT_DEVICE]    = "Device",
1104                 [UNIT_MOUNT]     = "Mount",
1105                 [UNIT_AUTOMOUNT] = "Automount",
1106                 [UNIT_SNAPSHOT]  = "Snapshot"
1107         };
1108
1109 #define EXEC_CONTEXT_CONFIG_ITEMS(context, section) \
1110                 { "WorkingDirectory",       config_parse_path,            &(context).working_directory,                    section   }, \
1111                 { "RootDirectory",          config_parse_path,            &(context).root_directory,                       section   }, \
1112                 { "User",                   config_parse_string,          &(context).user,                                 section   }, \
1113                 { "Group",                  config_parse_string,          &(context).group,                                section   }, \
1114                 { "SupplementaryGroups",    config_parse_strv,            &(context).supplementary_groups,                 section   }, \
1115                 { "Nice",                   config_parse_nice,            &(context),                                      section   }, \
1116                 { "OOMAdjust",              config_parse_oom_adjust,      &(context),                                      section   }, \
1117                 { "IOSchedulingClass",      config_parse_io_class,        &(context),                                      section   }, \
1118                 { "IOSchedulingPriority",   config_parse_io_priority,     &(context),                                      section   }, \
1119                 { "CPUSchedulingPolicy",    config_parse_cpu_sched_policy,&(context),                                      section   }, \
1120                 { "CPUSchedulingPriority",  config_parse_cpu_sched_prio,  &(context),                                      section   }, \
1121                 { "CPUSchedulingResetOnFork", config_parse_bool,          &(context).cpu_sched_reset_on_fork,              section   }, \
1122                 { "CPUAffinity",            config_parse_cpu_affinity,    &(context),                                      section   }, \
1123                 { "UMask",                  config_parse_mode,            &(context).umask,                                section   }, \
1124                 { "Environment",            config_parse_strv,            &(context).environment,                          section   }, \
1125                 { "StandardInput",          config_parse_input,           &(context).std_input,                            section   }, \
1126                 { "StandardOutput",         config_parse_output,          &(context).std_output,                           section   }, \
1127                 { "StandardError",          config_parse_output,          &(context).std_output,                           section   }, \
1128                 { "TTYPath",                config_parse_path,            &(context).tty_path,                             section   }, \
1129                 { "SyslogIdentifier",       config_parse_string,          &(context).syslog_identifier,                    section   }, \
1130                 { "SyslogFacility",         config_parse_facility,        &(context).syslog_priority,                      section   }, \
1131                 { "SyslogLevel",            config_parse_level,           &(context).syslog_priority,                      section   }, \
1132                 { "Capabilities",           config_parse_capabilities,    &(context),                                      section   }, \
1133                 { "SecureBits",             config_parse_secure_bits,     &(context),                                      section   }, \
1134                 { "CapabilityBoundingSetDrop", config_parse_bounding_set, &(context),                                      section   }, \
1135                 { "TimerSlackNS",           config_parse_timer_slack_ns,  &(context),                                      section   }, \
1136                 { "LimitCPU",               config_parse_limit,           &(context).rlimit[RLIMIT_CPU],                   section   }, \
1137                 { "LimitFSIZE",             config_parse_limit,           &(context).rlimit[RLIMIT_FSIZE],                 section   }, \
1138                 { "LimitDATA",              config_parse_limit,           &(context).rlimit[RLIMIT_DATA],                  section   }, \
1139                 { "LimitSTACK",             config_parse_limit,           &(context).rlimit[RLIMIT_STACK],                 section   }, \
1140                 { "LimitCORE",              config_parse_limit,           &(context).rlimit[RLIMIT_CORE],                  section   }, \
1141                 { "LimitRSS",               config_parse_limit,           &(context).rlimit[RLIMIT_RSS],                   section   }, \
1142                 { "LimitNOFILE",            config_parse_limit,           &(context).rlimit[RLIMIT_NOFILE],                section   }, \
1143                 { "LimitAS",                config_parse_limit,           &(context).rlimit[RLIMIT_AS],                    section   }, \
1144                 { "LimitNPROC",             config_parse_limit,           &(context).rlimit[RLIMIT_NPROC],                 section   }, \
1145                 { "LimitMEMLOCK",           config_parse_limit,           &(context).rlimit[RLIMIT_MEMLOCK],               section   }, \
1146                 { "LimitLOCKS",             config_parse_limit,           &(context).rlimit[RLIMIT_LOCKS],                 section   }, \
1147                 { "LimitSIGPENDING",        config_parse_limit,           &(context).rlimit[RLIMIT_SIGPENDING],            section   }, \
1148                 { "LimitMSGQUEUE",          config_parse_limit,           &(context).rlimit[RLIMIT_MSGQUEUE],              section   }, \
1149                 { "LimitNICE",              config_parse_limit,           &(context).rlimit[RLIMIT_NICE],                  section   }, \
1150                 { "LimitRTPRIO",            config_parse_limit,           &(context).rlimit[RLIMIT_RTPRIO],                section   }, \
1151                 { "LimitRTTIME",            config_parse_limit,           &(context).rlimit[RLIMIT_RTTIME],                section   }, \
1152                 { "ControlGroup",           config_parse_cgroup,          u,                                               section   }
1153
1154         const ConfigItem items[] = {
1155                 { "Names",                  config_parse_names,           u,                                               "Unit"    },
1156                 { "Description",            config_parse_string,          &u->meta.description,                            "Unit"    },
1157                 { "Requires",               config_parse_deps,            UINT_TO_PTR(UNIT_REQUIRES),                      "Unit"    },
1158                 { "RequiresOverridable",    config_parse_deps,            UINT_TO_PTR(UNIT_REQUIRES_OVERRIDABLE),          "Unit"    },
1159                 { "Requisite",              config_parse_deps,            UINT_TO_PTR(UNIT_REQUISITE),                     "Unit"    },
1160                 { "RequisiteOverridable",   config_parse_deps,            UINT_TO_PTR(UNIT_REQUISITE_OVERRIDABLE),         "Unit"    },
1161                 { "Wants",                  config_parse_deps,            UINT_TO_PTR(UNIT_WANTS),                         "Unit"    },
1162                 { "Conflicts",              config_parse_deps,            UINT_TO_PTR(UNIT_CONFLICTS),                     "Unit"    },
1163                 { "Before",                 config_parse_deps,            UINT_TO_PTR(UNIT_BEFORE),                        "Unit"    },
1164                 { "After",                  config_parse_deps,            UINT_TO_PTR(UNIT_AFTER),                         "Unit"    },
1165                 { "RecursiveStop",          config_parse_bool,            &u->meta.recursive_stop,                         "Unit"    },
1166                 { "StopWhenUnneeded",       config_parse_bool,            &u->meta.stop_when_unneeded,                     "Unit"    },
1167
1168                 { "PIDFile",                config_parse_path,            &u->service.pid_file,                            "Service" },
1169                 { "ExecStartPre",           config_parse_exec,            u->service.exec_command+SERVICE_EXEC_START_PRE,  "Service" },
1170                 { "ExecStart",              config_parse_exec,            u->service.exec_command+SERVICE_EXEC_START,      "Service" },
1171                 { "ExecStartPost",          config_parse_exec,            u->service.exec_command+SERVICE_EXEC_START_POST, "Service" },
1172                 { "ExecReload",             config_parse_exec,            u->service.exec_command+SERVICE_EXEC_RELOAD,     "Service" },
1173                 { "ExecStop",               config_parse_exec,            u->service.exec_command+SERVICE_EXEC_STOP,       "Service" },
1174                 { "ExecStopPost",           config_parse_exec,            u->service.exec_command+SERVICE_EXEC_STOP_POST,  "Service" },
1175                 { "RestartSec",             config_parse_usec,            &u->service.restart_usec,                        "Service" },
1176                 { "TimeoutSec",             config_parse_usec,            &u->service.timeout_usec,                        "Service" },
1177                 { "Type",                   config_parse_service_type,    &u->service.type,                                "Service" },
1178                 { "Restart",                config_parse_service_restart, &u->service.restart,                             "Service" },
1179                 { "PermissionsStartOnly",   config_parse_bool,            &u->service.permissions_start_only,              "Service" },
1180                 { "RootDirectoryStartOnly", config_parse_bool,            &u->service.root_directory_start_only,           "Service" },
1181                 { "ValidNoProcess",         config_parse_bool,            &u->service.valid_no_process,                    "Service" },
1182                 { "SysVStartPriority",      config_parse_sysv_priority,   &u->service.sysv_start_priority,                 "Service" },
1183                 { "KillMode",               config_parse_kill_mode,       &u->service.kill_mode,                           "Service" },
1184                 { "NonBlocking",            config_parse_bool,            &u->service.exec_context.non_blocking,           "Service" },
1185                 { "BusName",                config_parse_string,          &u->service.bus_name,                            "Service" },
1186                 EXEC_CONTEXT_CONFIG_ITEMS(u->service.exec_context, "Service"),
1187
1188                 { "ListenStream",           config_parse_listen,          &u->socket,                                      "Socket"  },
1189                 { "ListenDatagram",         config_parse_listen,          &u->socket,                                      "Socket"  },
1190                 { "ListenSequentialPacket", config_parse_listen,          &u->socket,                                      "Socket"  },
1191                 { "ListenFIFO",             config_parse_listen,          &u->socket,                                      "Socket"  },
1192                 { "BindIPv6Only",           config_parse_socket_bind,     &u->socket,                                      "Socket"  },
1193                 { "Backlog",                config_parse_unsigned,        &u->socket.backlog,                              "Socket"  },
1194                 { "BindToDevice",           config_parse_bindtodevice,    &u->socket,                                      "Socket"  },
1195                 { "ExecStartPre",           config_parse_exec,            u->socket.exec_command+SOCKET_EXEC_START_PRE,    "Socket"  },
1196                 { "ExecStartPost",          config_parse_exec,            u->socket.exec_command+SOCKET_EXEC_START_POST,   "Socket"  },
1197                 { "ExecStopPre",            config_parse_exec,            u->socket.exec_command+SOCKET_EXEC_STOP_PRE,     "Socket"  },
1198                 { "ExecStopPost",           config_parse_exec,            u->socket.exec_command+SOCKET_EXEC_STOP_POST,    "Socket"  },
1199                 { "TimeoutSec",             config_parse_usec,            &u->socket.timeout_usec,                         "Socket"  },
1200                 { "DirectoryMode",          config_parse_mode,            &u->socket.directory_mode,                       "Socket"  },
1201                 { "SocketMode",             config_parse_mode,            &u->socket.socket_mode,                          "Socket"  },
1202                 { "KillMode",               config_parse_kill_mode,       &u->socket.kill_mode,                            "Socket"  },
1203                 { "Accept",                 config_parse_bool,            &u->socket.accept,                               "Socket"  },
1204                 EXEC_CONTEXT_CONFIG_ITEMS(u->socket.exec_context, "Socket"),
1205
1206                 { "What",                   config_parse_string,          &u->mount.parameters_fragment.what,              "Mount"   },
1207                 { "Where",                  config_parse_path,            &u->mount.where,                                 "Mount"   },
1208                 { "Options",                config_parse_string,          &u->mount.parameters_fragment.options,           "Mount"   },
1209                 { "Type",                   config_parse_string,          &u->mount.parameters_fragment.fstype,            "Mount"   },
1210                 { "TimeoutSec",             config_parse_usec,            &u->mount.timeout_usec,                          "Mount"   },
1211                 { "KillMode",               config_parse_kill_mode,       &u->mount.kill_mode,                             "Mount"   },
1212                 EXEC_CONTEXT_CONFIG_ITEMS(u->mount.exec_context, "Mount"),
1213
1214                 { "Where",                  config_parse_path,            &u->automount.where,                             "Automount" },
1215
1216                 { NULL, NULL, NULL, NULL }
1217         };
1218
1219 #undef EXEC_CONTEXT_CONFIG_ITEMS
1220
1221         const char *sections[3];
1222         char *k;
1223         int r;
1224         Set *symlink_names;
1225         FILE *f = NULL;
1226         char *filename = NULL, *id = NULL;
1227         Unit *merged;
1228
1229         if (!u) {
1230                 /* Dirty dirty hack. */
1231                 dump_items((FILE*) path, items);
1232                 return 0;
1233         }
1234
1235         assert(u);
1236         assert(path);
1237
1238         sections[0] = "Unit";
1239         sections[1] = section_table[u->meta.type];
1240         sections[2] = NULL;
1241
1242         if (!(symlink_names = set_new(string_hash_func, string_compare_func)))
1243                 return -ENOMEM;
1244
1245         if (path_is_absolute(path)) {
1246
1247                 if (!(filename = strdup(path))) {
1248                         r = -ENOMEM;
1249                         goto finish;
1250                 }
1251
1252                 if ((r = open_follow(&filename, &f, symlink_names, &id)) < 0) {
1253                         free(filename);
1254                         filename = NULL;
1255
1256                         if (r != -ENOENT)
1257                                 goto finish;
1258                 }
1259
1260         } else  {
1261                 char **p;
1262
1263                 STRV_FOREACH(p, u->meta.manager->unit_path) {
1264
1265                         /* Instead of opening the path right away, we manually
1266                          * follow all symlinks and add their name to our unit
1267                          * name set while doing so */
1268                         if (!(filename = path_make_absolute(path, *p))) {
1269                                 r = -ENOMEM;
1270                                 goto finish;
1271                         }
1272
1273                         if ((r = open_follow(&filename, &f, symlink_names, &id)) < 0) {
1274                                 char *sn;
1275
1276                                 free(filename);
1277                                 filename = NULL;
1278
1279                                 if (r != -ENOENT)
1280                                         goto finish;
1281
1282                                 /* Empty the symlink names for the next run */
1283                                 while ((sn = set_steal_first(symlink_names)))
1284                                         free(sn);
1285
1286                                 continue;
1287                         }
1288
1289                         break;
1290                 }
1291         }
1292
1293         if (!filename) {
1294                 r = 0;
1295                 goto finish;
1296         }
1297
1298         merged = u;
1299         if ((r = merge_by_names(&merged, symlink_names, id)) < 0)
1300                 goto finish;
1301
1302         if (merged != u) {
1303                 u->meta.load_state = UNIT_MERGED;
1304                 r = 0;
1305                 goto finish;
1306         }
1307
1308         /* Now, parse the file contents */
1309         if ((r = config_parse(filename, f, sections, items, u)) < 0)
1310                 goto finish;
1311
1312         free(u->meta.fragment_path);
1313         u->meta.fragment_path = filename;
1314         filename = NULL;
1315
1316         u->meta.load_state = UNIT_LOADED;
1317         r = 0;
1318
1319 finish:
1320         while ((k = set_steal_first(symlink_names)))
1321                 free(k);
1322
1323         set_free(symlink_names);
1324         free(filename);
1325
1326         if (f)
1327                 fclose(f);
1328
1329         return r;
1330 }
1331
1332 int unit_load_fragment(Unit *u) {
1333         int r;
1334
1335         assert(u);
1336
1337         if (u->meta.fragment_path) {
1338
1339                 if ((r = load_from_path(u, u->meta.fragment_path)) < 0)
1340                         return r;
1341
1342         } else {
1343                 Iterator i;
1344                 const char *t;
1345
1346                 /* Try to find the unit under its id */
1347                 if ((r = load_from_path(u, u->meta.id)) < 0)
1348                         return r;
1349
1350                 /* Try to find an alias we can load this with */
1351                 if (u->meta.load_state == UNIT_STUB)
1352                         SET_FOREACH(t, u->meta.names, i) {
1353
1354                                 if (t == u->meta.id)
1355                                         continue;
1356
1357                                 if ((r = load_from_path(u, t)) < 0)
1358                                         return r;
1359
1360                                 if (u->meta.load_state != UNIT_STUB)
1361                                         break;
1362                         }
1363
1364                 /* Now, follow the same logic, but look for a template */
1365                 if (u->meta.load_state == UNIT_STUB && u->meta.instance) {
1366                         char *k;
1367
1368                         if (!(k = unit_name_template(u->meta.id)))
1369                                 return -ENOMEM;
1370
1371                         r = load_from_path(u, k);
1372                         free(k);
1373
1374                         if (r < 0)
1375                                 return r;
1376
1377                         if (u->meta.load_state == UNIT_STUB)
1378                                 SET_FOREACH(t, u->meta.names, i) {
1379
1380                                         if (t == u->meta.id)
1381                                                 continue;
1382
1383                                         if (!(k = unit_name_template(t)))
1384                                                 return -ENOMEM;
1385
1386                                         r = load_from_path(u, k);
1387                                         free(k);
1388
1389                                         if (r < 0)
1390                                                 return r;
1391
1392                                         if (u->meta.load_state != UNIT_STUB)
1393                                                 break;
1394                                 }
1395                 }
1396         }
1397
1398         return 0;
1399 }
1400
1401 void unit_dump_config_items(FILE *f) {
1402         /* OK, this wins a prize for extreme ugliness. */
1403
1404         load_from_path(NULL, (const void*) f);
1405 }