src/core/load-fragment.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   Copyright © 2012 Holger Hans Peter Freyther
   4 ***/
   5
   6 #include <errno.h>
   7 #include <fcntl.h>
   8 #include <linux/fs.h>
   9 #include <linux/oom.h>
  10 #if HAVE_SECCOMP
  11 #include <seccomp.h>
  12 #endif
  13 #include <sched.h>
  14 #include <sys/resource.h>
  15
  16 #include "af-list.h"
  17 #include "alloc-util.h"
  18 #include "all-units.h"
  19 #include "bpf-firewall.h"
  20 #include "bus-error.h"
  21 #include "bus-internal.h"
  22 #include "bus-util.h"
  23 #include "cap-list.h"
  24 #include "capability-util.h"
  25 #include "cgroup-setup.h"
  26 #include "conf-parser.h"
  27 #include "cpu-set-util.h"
  28 #include "env-util.h"
  29 #include "errno-list.h"
  30 #include "escape.h"
  31 #include "fd-util.h"
  32 #include "fs-util.h"
  33 #include "hexdecoct.h"
  34 #include "io-util.h"
  35 #include "ioprio.h"
  36 #include "ip-protocol-list.h"
  37 #include "journal-util.h"
  38 #include "limits-util.h"
  39 #include "load-fragment.h"
  40 #include "log.h"
  41 #include "mountpoint-util.h"
  42 #include "nulstr-util.h"
  43 #include "parse-util.h"
  44 #include "path-util.h"
  45 #include "process-util.h"
  46 #if HAVE_SECCOMP
  47 #include "seccomp-util.h"
  48 #endif
  49 #include "securebits-util.h"
  50 #include "signal-util.h"
  51 #include "stat-util.h"
  52 #include "string-util.h"
  53 #include "strv.h"
  54 #include "unit-name.h"
  55 #include "unit-printf.h"
  56 #include "user-util.h"
  57 #include "time-util.h"
  58 #include "web-util.h"
  59
  60 static int parse_socket_protocol(const char *s) {
  61         int r;
  62
  63         r = parse_ip_protocol(s);
  64         if (r < 0)
  65                 return r;
  66         if (!IN_SET(r, IPPROTO_UDPLITE, IPPROTO_SCTP))
  67                 return -EPROTONOSUPPORT;
  68
  69         return r;
  70 }
  71
  72 int parse_crash_chvt(const char *value, int *data) {
  73         int b;
  74
  75         if (safe_atoi(value, data) >= 0)
  76                 return 0;
  77
  78         b = parse_boolean(value);
  79         if (b < 0)
  80                 return b;
  81
  82         if (b > 0)
  83                 *data = 0; /* switch to where kmsg goes */
  84         else
  85                 *data = -1; /* turn off switching */
  86
  87         return 0;
  88 }
  89
  90 int parse_confirm_spawn(const char *value, char **console) {
  91         char *s;
  92         int r;
  93
  94         r = value ? parse_boolean(value) : 1;
  95         if (r == 0) {
  96                 *console = NULL;
  97                 return 0;
  98         } else if (r > 0) /* on with default tty */
  99                 s = strdup("/dev/console");
 100         else if (is_path(value)) /* on with fully qualified path */
 101                 s = strdup(value);
 102         else /* on with only a tty file name, not a fully qualified path */
 103                 s = path_join("/dev/", value);
 104         if (!s)
 105                 return -ENOMEM;
 106
 107         *console = s;
 108         return 0;
 109 }
 110
 111 DEFINE_CONFIG_PARSE(config_parse_socket_protocol, parse_socket_protocol, "Failed to parse socket protocol");
 112 DEFINE_CONFIG_PARSE(config_parse_exec_secure_bits, secure_bits_from_string, "Failed to parse secure bits");
 113 DEFINE_CONFIG_PARSE_ENUM(config_parse_collect_mode, collect_mode, CollectMode, "Failed to parse garbage collection mode");
 114 DEFINE_CONFIG_PARSE_ENUM(config_parse_device_policy, cgroup_device_policy, CGroupDevicePolicy, "Failed to parse device policy");
 115 DEFINE_CONFIG_PARSE_ENUM(config_parse_exec_keyring_mode, exec_keyring_mode, ExecKeyringMode, "Failed to parse keyring mode");
 116 DEFINE_CONFIG_PARSE_ENUM(config_parse_exec_utmp_mode, exec_utmp_mode, ExecUtmpMode, "Failed to parse utmp mode");
 117 DEFINE_CONFIG_PARSE_ENUM(config_parse_job_mode, job_mode, JobMode, "Failed to parse job mode");
 118 DEFINE_CONFIG_PARSE_ENUM(config_parse_kill_mode, kill_mode, KillMode, "Failed to parse kill mode");
 119 DEFINE_CONFIG_PARSE_ENUM(config_parse_notify_access, notify_access, NotifyAccess, "Failed to parse notify access specifier");
 120 DEFINE_CONFIG_PARSE_ENUM(config_parse_protect_home, protect_home, ProtectHome, "Failed to parse protect home value");
 121 DEFINE_CONFIG_PARSE_ENUM(config_parse_protect_system, protect_system, ProtectSystem, "Failed to parse protect system value");
 122 DEFINE_CONFIG_PARSE_ENUM(config_parse_runtime_preserve_mode, exec_preserve_mode, ExecPreserveMode, "Failed to parse runtime directory preserve mode");
 123 DEFINE_CONFIG_PARSE_ENUM(config_parse_service_type, service_type, ServiceType, "Failed to parse service type");
 124 DEFINE_CONFIG_PARSE_ENUM(config_parse_service_restart, service_restart, ServiceRestart, "Failed to parse service restart specifier");
 125 DEFINE_CONFIG_PARSE_ENUM(config_parse_socket_bind, socket_address_bind_ipv6_only_or_bool, SocketAddressBindIPv6Only, "Failed to parse bind IPv6 only value");
 126 DEFINE_CONFIG_PARSE_ENUM(config_parse_oom_policy, oom_policy, OOMPolicy, "Failed to parse OOM policy");
 127 DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_ip_tos, ip_tos, int, -1, "Failed to parse IP TOS value");
 128 DEFINE_CONFIG_PARSE_PTR(config_parse_blockio_weight, cg_blkio_weight_parse, uint64_t, "Invalid block IO weight");
 129 DEFINE_CONFIG_PARSE_PTR(config_parse_cg_weight, cg_weight_parse, uint64_t, "Invalid weight");
 130 DEFINE_CONFIG_PARSE_PTR(config_parse_cpu_shares, cg_cpu_shares_parse, uint64_t, "Invalid CPU shares");
 131 DEFINE_CONFIG_PARSE_PTR(config_parse_exec_mount_flags, mount_propagation_flags_from_string, unsigned long, "Failed to parse mount flag");
 132 DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_numa_policy, mpol, int, -1, "Invalid NUMA policy type");
 133 DEFINE_CONFIG_PARSE_ENUM(config_parse_status_unit_format, status_unit_format, StatusUnitFormat, "Failed to parse status unit format");
 134
 135 int config_parse_unit_deps(
 136                 const char *unit,
 137                 const char *filename,
 138                 unsigned line,
 139                 const char *section,
 140                 unsigned section_line,
 141                 const char *lvalue,
 142                 int ltype,
 143                 const char *rvalue,
 144                 void *data,
 145                 void *userdata) {
 146
 147         UnitDependency d = ltype;
 148         Unit *u = userdata;
 149         const char *p;
 150
 151         assert(filename);
 152         assert(lvalue);
 153         assert(rvalue);
 154
 155         p = rvalue;
 156         for (;;) {
 157                 _cleanup_free_ char *word = NULL, *k = NULL;
 158                 int r;
 159
 160                 r = extract_first_word(&p, &word, NULL, EXTRACT_RETAIN_ESCAPE);
 161                 if (r == 0)
 162                         break;
 163                 if (r == -ENOMEM)
 164                         return log_oom();
 165                 if (r < 0) {
 166                         log_syntax(unit, LOG_ERR, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
 167                         break;
 168                 }
 169
 170                 r = unit_name_printf(u, word, &k);
 171                 if (r < 0) {
 172                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", word);
 173                         continue;
 174                 }
 175
 176                 r = unit_add_dependency_by_name(u, d, k, true, UNIT_DEPENDENCY_FILE);
 177                 if (r < 0)
 178                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to add dependency on %s, ignoring: %m", k);
 179         }
 180
 181         return 0;
 182 }
 183
 184 int config_parse_obsolete_unit_deps(
 185                 const char *unit,
 186                 const char *filename,
 187                 unsigned line,
 188                 const char *section,
 189                 unsigned section_line,
 190                 const char *lvalue,
 191                 int ltype,
 192                 const char *rvalue,
 193                 void *data,
 194                 void *userdata) {
 195
 196         log_syntax(unit, LOG_WARNING, filename, line, 0,
 197                    "Unit dependency type %s= is obsolete, replacing by %s=, please update your unit file", lvalue, unit_dependency_to_string(ltype));
 198
 199         return config_parse_unit_deps(unit, filename, line, section, section_line, lvalue, ltype, rvalue, data, userdata);
 200 }
 201
 202 int config_parse_unit_string_printf(
 203                 const char *unit,
 204                 const char *filename,
 205                 unsigned line,
 206                 const char *section,
 207                 unsigned section_line,
 208                 const char *lvalue,
 209                 int ltype,
 210                 const char *rvalue,
 211                 void *data,
 212                 void *userdata) {
 213
 214         _cleanup_free_ char *k = NULL;
 215         const Unit *u = userdata;
 216         int r;
 217
 218         assert(filename);
 219         assert(lvalue);
 220         assert(rvalue);
 221         assert(u);
 222
 223         r = unit_full_printf(u, rvalue, &k);
 224         if (r < 0) {
 225                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
 226                 return 0;
 227         }
 228
 229         return config_parse_string(unit, filename, line, section, section_line, lvalue, ltype, k, data, userdata);
 230 }
 231
 232 int config_parse_unit_strv_printf(
 233                 const char *unit,
 234                 const char *filename,
 235                 unsigned line,
 236                 const char *section,
 237                 unsigned section_line,
 238                 const char *lvalue,
 239                 int ltype,
 240                 const char *rvalue,
 241                 void *data,
 242                 void *userdata) {
 243
 244         const Unit *u = userdata;
 245         _cleanup_free_ char *k = NULL;
 246         int r;
 247
 248         assert(filename);
 249         assert(lvalue);
 250         assert(rvalue);
 251         assert(u);
 252
 253         r = unit_full_printf(u, rvalue, &k);
 254         if (r < 0) {
 255                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
 256                 return 0;
 257         }
 258
 259         return config_parse_strv(unit, filename, line, section, section_line, lvalue, ltype, k, data, userdata);
 260 }
 261
 262 int config_parse_unit_path_printf(
 263                 const char *unit,
 264                 const char *filename,
 265                 unsigned line,
 266                 const char *section,
 267                 unsigned section_line,
 268                 const char *lvalue,
 269                 int ltype,
 270                 const char *rvalue,
 271                 void *data,
 272                 void *userdata) {
 273
 274         _cleanup_free_ char *k = NULL;
 275         const Unit *u = userdata;
 276         int r;
 277         bool fatal = ltype;
 278
 279         assert(filename);
 280         assert(lvalue);
 281         assert(rvalue);
 282         assert(u);
 283
 284         /* Let's not bother with anything that is too long */
 285         if (strlen(rvalue) >= PATH_MAX) {
 286                 log_syntax(unit, LOG_ERR, filename, line, 0,
 287                            "%s value too long%s.",
 288                            lvalue, fatal ? "" : ", ignoring");
 289                 return fatal ? -ENAMETOOLONG : 0;
 290         }
 291
 292         r = unit_full_printf(u, rvalue, &k);
 293         if (r < 0) {
 294                 log_syntax(unit, LOG_ERR, filename, line, r,
 295                            "Failed to resolve unit specifiers in '%s'%s: %m",
 296                            rvalue, fatal ? "" : ", ignoring");
 297                 return fatal ? -ENOEXEC : 0;
 298         }
 299
 300         return config_parse_path(unit, filename, line, section, section_line, lvalue, ltype, k, data, userdata);
 301 }
 302
 303 int config_parse_unit_path_strv_printf(
 304                 const char *unit,
 305                 const char *filename,
 306                 unsigned line,
 307                 const char *section,
 308                 unsigned section_line,
 309                 const char *lvalue,
 310                 int ltype,
 311                 const char *rvalue,
 312                 void *data,
 313                 void *userdata) {
 314
 315         char ***x = data;
 316         const Unit *u = userdata;
 317         int r;
 318         const char *p;
 319
 320         assert(filename);
 321         assert(lvalue);
 322         assert(rvalue);
 323         assert(u);
 324
 325         if (isempty(rvalue)) {
 326                 *x = strv_free(*x);
 327                 return 0;
 328         }
 329
 330         for (p = rvalue;;) {
 331                 _cleanup_free_ char *word = NULL, *k = NULL;
 332
 333                 r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
 334                 if (r == 0)
 335                         return 0;
 336                 if (r == -ENOMEM)
 337                         return log_oom();
 338                 if (r < 0) {
 339                         log_syntax(unit, LOG_WARNING, filename, line, r,
 340                                    "Invalid syntax, ignoring: %s", rvalue);
 341                         return 0;
 342                 }
 343
 344                 r = unit_full_printf(u, word, &k);
 345                 if (r < 0) {
 346                         log_syntax(unit, LOG_ERR, filename, line, r,
 347                                    "Failed to resolve unit specifiers in '%s', ignoring: %m", word);
 348                         return 0;
 349                 }
 350
 351                 r = path_simplify_and_warn(k, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
 352                 if (r < 0)
 353                         return 0;
 354
 355                 r = strv_consume(x, TAKE_PTR(k));
 356                 if (r < 0)
 357                         return log_oom();
 358         }
 359 }
 360
 361 static int patch_var_run(
 362                 const char *unit,
 363                 const char *filename,
 364                 unsigned line,
 365                 const char *lvalue,
 366                 char **path) {
 367
 368         const char *e;
 369         char *z;
 370
 371         e = path_startswith(*path, "/var/run/");
 372         if (!e)
 373                 return 0;
 374
 375         z = path_join("/run/", e);
 376         if (!z)
 377                 return log_oom();
 378
 379         log_syntax(unit, LOG_NOTICE, filename, line, 0,
 380                    "%s= references a path below legacy directory /var/run/, updating %s → %s; "
 381                    "please update the unit file accordingly.", lvalue, *path, z);
 382
 383         free_and_replace(*path, z);
 384
 385         return 1;
 386 }
 387
 388 int config_parse_socket_listen(
 389                 const char *unit,
 390                 const char *filename,
 391                 unsigned line,
 392                 const char *section,
 393                 unsigned section_line,
 394                 const char *lvalue,
 395                 int ltype,
 396                 const char *rvalue,
 397                 void *data,
 398                 void *userdata) {
 399
 400         _cleanup_free_ SocketPort *p = NULL;
 401         SocketPort *tail;
 402         Socket *s;
 403         int r;
 404
 405         assert(filename);
 406         assert(lvalue);
 407         assert(rvalue);
 408         assert(data);
 409
 410         s = SOCKET(data);
 411
 412         if (isempty(rvalue)) {
 413                 /* An empty assignment removes all ports */
 414                 socket_free_ports(s);
 415                 return 0;
 416         }
 417
 418         p = new0(SocketPort, 1);
 419         if (!p)
 420                 return log_oom();
 421
 422         if (ltype != SOCKET_SOCKET) {
 423                 _cleanup_free_ char *k = NULL;
 424
 425                 r = unit_full_printf(UNIT(s), rvalue, &k);
 426                 if (r < 0) {
 427                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
 428                         return 0;
 429                 }
 430
 431                 r = path_simplify_and_warn(k, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
 432                 if (r < 0)
 433                         return 0;
 434
 435                 if (ltype == SOCKET_FIFO) {
 436                         r = patch_var_run(unit, filename, line, lvalue, &k);
 437                         if (r < 0)
 438                                 return r;
 439                 }
 440
 441                 free_and_replace(p->path, k);
 442                 p->type = ltype;
 443
 444         } else if (streq(lvalue, "ListenNetlink")) {
 445                 _cleanup_free_ char  *k = NULL;
 446
 447                 r = unit_full_printf(UNIT(s), rvalue, &k);
 448                 if (r < 0) {
 449                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
 450                         return 0;
 451                 }
 452
 453                 r = socket_address_parse_netlink(&p->address, k);
 454                 if (r < 0) {
 455                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse address value in '%s', ignoring: %m", k);
 456                         return 0;
 457                 }
 458
 459                 p->type = SOCKET_SOCKET;
 460
 461         } else {
 462                 _cleanup_free_ char *k = NULL;
 463
 464                 r = unit_full_printf(UNIT(s), rvalue, &k);
 465                 if (r < 0) {
 466                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
 467                         return 0;
 468                 }
 469
 470                 if (k[0] == '/') { /* Only for AF_UNIX file system sockets… */
 471                         r = patch_var_run(unit, filename, line, lvalue, &k);
 472                         if (r < 0)
 473                                 return r;
 474                 }
 475
 476                 r = socket_address_parse_and_warn(&p->address, k);
 477                 if (r < 0) {
 478                         if (r != -EAFNOSUPPORT)
 479                                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse address value in '%s', ignoring: %m", k);
 480                         return 0;
 481                 }
 482
 483                 if (streq(lvalue, "ListenStream"))
 484                         p->address.type = SOCK_STREAM;
 485                 else if (streq(lvalue, "ListenDatagram"))
 486                         p->address.type = SOCK_DGRAM;
 487                 else {
 488                         assert(streq(lvalue, "ListenSequentialPacket"));
 489                         p->address.type = SOCK_SEQPACKET;
 490                 }
 491
 492                 if (socket_address_family(&p->address) != AF_LOCAL && p->address.type == SOCK_SEQPACKET) {
 493                         log_syntax(unit, LOG_ERR, filename, line, 0, "Address family not supported, ignoring: %s", rvalue);
 494                         return 0;
 495                 }
 496
 497                 p->type = SOCKET_SOCKET;
 498         }
 499
 500         p->fd = -1;
 501         p->auxiliary_fds = NULL;
 502         p->n_auxiliary_fds = 0;
 503         p->socket = s;
 504
 505         LIST_FIND_TAIL(port, s->ports, tail);
 506         LIST_INSERT_AFTER(port, s->ports, tail, p);
 507
 508         p = NULL;
 509
 510         return 0;
 511 }
 512
 513 int config_parse_exec_nice(
 514                 const char *unit,
 515                 const char *filename,
 516                 unsigned line,
 517                 const char *section,
 518                 unsigned section_line,
 519                 const char *lvalue,
 520                 int ltype,
 521                 const char *rvalue,
 522                 void *data,
 523                 void *userdata) {
 524
 525         ExecContext *c = data;
 526         int priority, r;
 527
 528         assert(filename);
 529         assert(lvalue);
 530         assert(rvalue);
 531         assert(data);
 532
 533         if (isempty(rvalue)) {
 534                 c->nice_set = false;
 535                 return 0;
 536         }
 537
 538         r = parse_nice(rvalue, &priority);
 539         if (r < 0) {
 540                 if (r == -ERANGE)
 541                         log_syntax(unit, LOG_ERR, filename, line, r, "Nice priority out of range, ignoring: %s", rvalue);
 542                 else
 543                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse nice priority '%s', ignoring: %m", rvalue);
 544                 return 0;
 545         }
 546
 547         c->nice = priority;
 548         c->nice_set = true;
 549
 550         return 0;
 551 }
 552
 553 int config_parse_exec_oom_score_adjust(
 554                 const char* unit,
 555                 const char *filename,
 556                 unsigned line,
 557                 const char *section,
 558                 unsigned section_line,
 559                 const char *lvalue,
 560                 int ltype,
 561                 const char *rvalue,
 562                 void *data,
 563                 void *userdata) {
 564
 565         ExecContext *c = data;
 566         int oa, r;
 567
 568         assert(filename);
 569         assert(lvalue);
 570         assert(rvalue);
 571         assert(data);
 572
 573         if (isempty(rvalue)) {
 574                 c->oom_score_adjust_set = false;
 575                 return 0;
 576         }
 577
 578         r = parse_oom_score_adjust(rvalue, &oa);
 579         if (r < 0) {
 580                 if (r == -ERANGE)
 581                         log_syntax(unit, LOG_ERR, filename, line, r, "OOM score adjust value out of range, ignoring: %s", rvalue);
 582                 else
 583                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse the OOM score adjust value '%s', ignoring: %m", rvalue);
 584                 return 0;
 585         }
 586
 587         c->oom_score_adjust = oa;
 588         c->oom_score_adjust_set = true;
 589
 590         return 0;
 591 }
 592
 593 int config_parse_exec(
 594                 const char *unit,
 595                 const char *filename,
 596                 unsigned line,
 597                 const char *section,
 598                 unsigned section_line,
 599                 const char *lvalue,
 600                 int ltype,
 601                 const char *rvalue,
 602                 void *data,
 603                 void *userdata) {
 604
 605         ExecCommand **e = data;
 606         const Unit *u = userdata;
 607         const char *p;
 608         bool semicolon;
 609         int r;
 610
 611         assert(filename);
 612         assert(lvalue);
 613         assert(rvalue);
 614         assert(e);
 615
 616         e += ltype;
 617         rvalue += strspn(rvalue, WHITESPACE);
 618
 619         if (isempty(rvalue)) {
 620                 /* An empty assignment resets the list */
 621                 *e = exec_command_free_list(*e);
 622                 return 0;
 623         }
 624
 625         p = rvalue;
 626         do {
 627                 _cleanup_free_ char *path = NULL, *firstword = NULL;
 628                 ExecCommandFlags flags = 0;
 629                 bool ignore = false, separate_argv0 = false;
 630                 _cleanup_free_ ExecCommand *nce = NULL;
 631                 _cleanup_strv_free_ char **n = NULL;
 632                 size_t nlen = 0, nbufsize = 0;
 633                 const char *f;
 634
 635                 semicolon = false;
 636
 637                 r = extract_first_word_and_warn(&p, &firstword, NULL, EXTRACT_UNQUOTE|EXTRACT_CUNESCAPE, unit, filename, line, rvalue);
 638                 if (r <= 0)
 639                         return 0;
 640
 641                 f = firstword;
 642                 for (;;) {
 643                         /* We accept an absolute path as first argument.  If it's prefixed with - and the path doesn't
 644                          * exist, we ignore it instead of erroring out; if it's prefixed with @, we allow overriding of
 645                          * argv[0]; if it's prefixed with :, we will not do environment variable substitution;
 646                          * if it's prefixed with +, it will be run with full privileges and no sandboxing; if
 647                          * it's prefixed with '!' we apply sandboxing, but do not change user/group credentials; if
 648                          * it's prefixed with '!!', then we apply user/group credentials if the kernel supports ambient
 649                          * capabilities -- if it doesn't we don't apply the credentials themselves, but do apply most
 650                          * other sandboxing, with some special exceptions for changing UID.
 651                          *
 652                          * The idea is that '!!' may be used to write services that can take benefit of systemd's
 653                          * UID/GID dropping if the kernel supports ambient creds, but provide an automatic fallback to
 654                          * privilege dropping within the daemon if the kernel does not offer that. */
 655
 656                         if (*f == '-' && !(flags & EXEC_COMMAND_IGNORE_FAILURE)) {
 657                                 flags |= EXEC_COMMAND_IGNORE_FAILURE;
 658                                 ignore = true;
 659                         } else if (*f == '@' && !separate_argv0)
 660                                 separate_argv0 = true;
 661                         else if (*f == ':' && !(flags & EXEC_COMMAND_NO_ENV_EXPAND))
 662                                 flags |= EXEC_COMMAND_NO_ENV_EXPAND;
 663                         else if (*f == '+' && !(flags & (EXEC_COMMAND_FULLY_PRIVILEGED|EXEC_COMMAND_NO_SETUID|EXEC_COMMAND_AMBIENT_MAGIC)))
 664                                 flags |= EXEC_COMMAND_FULLY_PRIVILEGED;
 665                         else if (*f == '!' && !(flags & (EXEC_COMMAND_FULLY_PRIVILEGED|EXEC_COMMAND_NO_SETUID|EXEC_COMMAND_AMBIENT_MAGIC)))
 666                                 flags |= EXEC_COMMAND_NO_SETUID;
 667                         else if (*f == '!' && !(flags & (EXEC_COMMAND_FULLY_PRIVILEGED|EXEC_COMMAND_AMBIENT_MAGIC))) {
 668                                 flags &= ~EXEC_COMMAND_NO_SETUID;
 669                                 flags |= EXEC_COMMAND_AMBIENT_MAGIC;
 670                         } else
 671                                 break;
 672                         f++;
 673                 }
 674
 675                 r = unit_full_printf(u, f, &path);
 676                 if (r < 0) {
 677                         log_syntax(unit, LOG_ERR, filename, line, r,
 678                                    "Failed to resolve unit specifiers in '%s'%s: %m",
 679                                    f, ignore ? ", ignoring" : "");
 680                         return ignore ? 0 : -ENOEXEC;
 681                 }
 682
 683                 if (isempty(path)) {
 684                         /* First word is either "-" or "@" with no command. */
 685                         log_syntax(unit, LOG_ERR, filename, line, 0,
 686                                    "Empty path in command line%s: '%s'",
 687                                    ignore ? ", ignoring" : "", rvalue);
 688                         return ignore ? 0 : -ENOEXEC;
 689                 }
 690                 if (!string_is_safe(path)) {
 691                         log_syntax(unit, LOG_ERR, filename, line, 0,
 692                                    "Executable name contains special characters%s: %s",
 693                                    ignore ? ", ignoring" : "", path);
 694                         return ignore ? 0 : -ENOEXEC;
 695                 }
 696                 if (endswith(path, "/")) {
 697                         log_syntax(unit, LOG_ERR, filename, line, 0,
 698                                    "Executable path specifies a directory%s: %s",
 699                                    ignore ? ", ignoring" : "", path);
 700                         return ignore ? 0 : -ENOEXEC;
 701                 }
 702
 703                 if (!path_is_absolute(path)) {
 704                         const char *prefix;
 705                         bool found = false;
 706
 707                         if (!filename_is_valid(path)) {
 708                                 log_syntax(unit, LOG_ERR, filename, line, 0,
 709                                            "Neither a valid executable name nor an absolute path%s: %s",
 710                                            ignore ? ", ignoring" : "", path);
 711                                 return ignore ? 0 : -ENOEXEC;
 712                         }
 713
 714                         /* Resolve a single-component name to a full path */
 715                         NULSTR_FOREACH(prefix, DEFAULT_PATH_NULSTR) {
 716                                 _cleanup_free_ char *fullpath = NULL;
 717
 718                                 fullpath = path_join(prefix, path);
 719                                 if (!fullpath)
 720                                         return log_oom();
 721
 722                                 if (access(fullpath, F_OK) >= 0) {
 723                                         free_and_replace(path, fullpath);
 724                                         found = true;
 725                                         break;
 726                                 }
 727                         }
 728
 729                         if (!found) {
 730                                 log_syntax(unit, LOG_ERR, filename, line, 0,
 731                                            "Executable \"%s\" not found in path \"%s\"%s",
 732                                            path, DEFAULT_PATH, ignore ? ", ignoring" : "");
 733                                 return ignore ? 0 : -ENOEXEC;
 734                         }
 735                 }
 736
 737                 if (!separate_argv0) {
 738                         char *w = NULL;
 739
 740                         if (!GREEDY_REALLOC(n, nbufsize, nlen + 2))
 741                                 return log_oom();
 742
 743                         w = strdup(path);
 744                         if (!w)
 745                                 return log_oom();
 746                         n[nlen++] = w;
 747                         n[nlen] = NULL;
 748                 }
 749
 750                 path_simplify(path, false);
 751
 752                 while (!isempty(p)) {
 753                         _cleanup_free_ char *word = NULL, *resolved = NULL;
 754
 755                         /* Check explicitly for an unquoted semicolon as
 756                          * command separator token.  */
 757                         if (p[0] == ';' && (!p[1] || strchr(WHITESPACE, p[1]))) {
 758                                 p++;
 759                                 p += strspn(p, WHITESPACE);
 760                                 semicolon = true;
 761                                 break;
 762                         }
 763
 764                         /* Check for \; explicitly, to not confuse it with \\; or "\;" or "\\;" etc.
 765                          * extract_first_word() would return the same for all of those.  */
 766                         if (p[0] == '\\' && p[1] == ';' && (!p[2] || strchr(WHITESPACE, p[2]))) {
 767                                 char *w;
 768
 769                                 p += 2;
 770                                 p += strspn(p, WHITESPACE);
 771
 772                                 if (!GREEDY_REALLOC(n, nbufsize, nlen + 2))
 773                                         return log_oom();
 774
 775                                 w = strdup(";");
 776                                 if (!w)
 777                                         return log_oom();
 778                                 n[nlen++] = w;
 779                                 n[nlen] = NULL;
 780                                 continue;
 781                         }
 782
 783                         r = extract_first_word_and_warn(&p, &word, NULL, EXTRACT_UNQUOTE|EXTRACT_CUNESCAPE, unit, filename, line, rvalue);
 784                         if (r == 0)
 785                                 break;
 786                         if (r < 0)
 787                                 return ignore ? 0 : -ENOEXEC;
 788
 789                         r = unit_full_printf(u, word, &resolved);
 790                         if (r < 0) {
 791                                 log_syntax(unit, LOG_ERR, filename, line, r,
 792                                            "Failed to resolve unit specifiers in %s%s: %m",
 793                                            word, ignore ? ", ignoring" : "");
 794                                 return ignore ? 0 : -ENOEXEC;
 795                         }
 796
 797                         if (!GREEDY_REALLOC(n, nbufsize, nlen + 2))
 798                                 return log_oom();
 799
 800                         n[nlen++] = TAKE_PTR(resolved);
 801                         n[nlen] = NULL;
 802                 }
 803
 804                 if (!n || !n[0]) {
 805                         log_syntax(unit, LOG_ERR, filename, line, 0,
 806                                    "Empty executable name or zeroeth argument%s: %s",
 807                                    ignore ? ", ignoring" : "", rvalue);
 808                         return ignore ? 0 : -ENOEXEC;
 809                 }
 810
 811                 nce = new0(ExecCommand, 1);
 812                 if (!nce)
 813                         return log_oom();
 814
 815                 nce->argv = TAKE_PTR(n);
 816                 nce->path = TAKE_PTR(path);
 817                 nce->flags = flags;
 818
 819                 exec_command_append_list(e, nce);
 820
 821                 /* Do not _cleanup_free_ these. */
 822                 nce = NULL;
 823
 824                 rvalue = p;
 825         } while (semicolon);
 826
 827         return 0;
 828 }
 829
 830 int config_parse_socket_bindtodevice(
 831                 const char* unit,
 832                 const char *filename,
 833                 unsigned line,
 834                 const char *section,
 835                 unsigned section_line,
 836                 const char *lvalue,
 837                 int ltype,
 838                 const char *rvalue,
 839                 void *data,
 840                 void *userdata) {
 841
 842         Socket *s = data;
 843
 844         assert(filename);
 845         assert(lvalue);
 846         assert(rvalue);
 847         assert(data);
 848
 849         if (isempty(rvalue) || streq(rvalue, "*")) {
 850                 s->bind_to_device = mfree(s->bind_to_device);
 851                 return 0;
 852         }
 853
 854         if (!ifname_valid(rvalue)) {
 855                 log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid interface name, ignoring: %s", rvalue);
 856                 return 0;
 857         }
 858
 859         if (free_and_strdup(&s->bind_to_device, rvalue) < 0)
 860                 return log_oom();
 861
 862         return 0;
 863 }
 864
 865 int config_parse_exec_input(
 866                 const char *unit,
 867                 const char *filename,
 868                 unsigned line,
 869                 const char *section,
 870                 unsigned section_line,
 871                 const char *lvalue,
 872                 int ltype,
 873                 const char *rvalue,
 874                 void *data,
 875                 void *userdata) {
 876
 877         ExecContext *c = data;
 878         const Unit *u = userdata;
 879         const char *n;
 880         ExecInput ei;
 881         int r;
 882
 883         assert(data);
 884         assert(filename);
 885         assert(line);
 886         assert(rvalue);
 887
 888         n = startswith(rvalue, "fd:");
 889         if (n) {
 890                 _cleanup_free_ char *resolved = NULL;
 891
 892                 r = unit_full_printf(u, n, &resolved);
 893                 if (r < 0)
 894                         return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s': %m", n);
 895
 896                 if (isempty(resolved))
 897                         resolved = mfree(resolved);
 898                 else if (!fdname_is_valid(resolved)) {
 899                         log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid file descriptor name: %s", resolved);
 900                         return -ENOEXEC;
 901                 }
 902
 903                 free_and_replace(c->stdio_fdname[STDIN_FILENO], resolved);
 904
 905                 ei = EXEC_INPUT_NAMED_FD;
 906
 907         } else if ((n = startswith(rvalue, "file:"))) {
 908                 _cleanup_free_ char *resolved = NULL;
 909
 910                 r = unit_full_printf(u, n, &resolved);
 911                 if (r < 0)
 912                         return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s': %m", n);
 913
 914                 r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE | PATH_CHECK_FATAL, unit, filename, line, lvalue);
 915                 if (r < 0)
 916                         return -ENOEXEC;
 917
 918                 free_and_replace(c->stdio_file[STDIN_FILENO], resolved);
 919
 920                 ei = EXEC_INPUT_FILE;
 921
 922         } else {
 923                 ei = exec_input_from_string(rvalue);
 924                 if (ei < 0) {
 925                         log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse input specifier, ignoring: %s", rvalue);
 926                         return 0;
 927                 }
 928         }
 929
 930         c->std_input = ei;
 931         return 0;
 932 }
 933
 934 int config_parse_exec_input_text(
 935                 const char *unit,
 936                 const char *filename,
 937                 unsigned line,
 938                 const char *section,
 939                 unsigned section_line,
 940                 const char *lvalue,
 941                 int ltype,
 942                 const char *rvalue,
 943                 void *data,
 944                 void *userdata) {
 945
 946         _cleanup_free_ char *unescaped = NULL, *resolved = NULL;
 947         ExecContext *c = data;
 948         const Unit *u = userdata;
 949         size_t sz;
 950         void *p;
 951         int r;
 952
 953         assert(data);
 954         assert(filename);
 955         assert(line);
 956         assert(rvalue);
 957
 958         if (isempty(rvalue)) {
 959                 /* Reset if the empty string is assigned */
 960                 c->stdin_data = mfree(c->stdin_data);
 961                 c->stdin_data_size = 0;
 962                 return 0;
 963         }
 964
 965         r = cunescape(rvalue, 0, &unescaped);
 966         if (r < 0)
 967                 return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to decode C escaped text '%s': %m", rvalue);
 968
 969         r = unit_full_printf(u, unescaped, &resolved);
 970         if (r < 0)
 971                 return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s': %m", unescaped);
 972
 973         sz = strlen(resolved);
 974         if (c->stdin_data_size + sz + 1 < c->stdin_data_size || /* check for overflow */
 975             c->stdin_data_size + sz + 1 > EXEC_STDIN_DATA_MAX) {
 976                 log_syntax(unit, LOG_ERR, filename, line, 0, "Standard input data too large (%zu), maximum of %zu permitted, ignoring.", c->stdin_data_size + sz, (size_t) EXEC_STDIN_DATA_MAX);
 977                 return -E2BIG;
 978         }
 979
 980         p = realloc(c->stdin_data, c->stdin_data_size + sz + 1);
 981         if (!p)
 982                 return log_oom();
 983
 984         *((char*) mempcpy((char*) p + c->stdin_data_size, resolved, sz)) = '\n';
 985
 986         c->stdin_data = p;
 987         c->stdin_data_size += sz + 1;
 988
 989         return 0;
 990 }
 991
 992 int config_parse_exec_input_data(
 993                 const char *unit,
 994                 const char *filename,
 995                 unsigned line,
 996                 const char *section,
 997                 unsigned section_line,
 998                 const char *lvalue,
 999                 int ltype,
1000                 const char *rvalue,
1001                 void *data,
1002                 void *userdata) {
1003
1004         _cleanup_free_ void *p = NULL;
1005         ExecContext *c = data;
1006         size_t sz;
1007         void *q;
1008         int r;
1009
1010         assert(data);
1011         assert(filename);
1012         assert(line);
1013         assert(rvalue);
1014
1015         if (isempty(rvalue)) {
1016                 /* Reset if the empty string is assigned */
1017                 c->stdin_data = mfree(c->stdin_data);
1018                 c->stdin_data_size = 0;
1019                 return 0;
1020         }
1021
1022         r = unbase64mem(rvalue, (size_t) -1, &p, &sz);
1023         if (r < 0)
1024                 return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to decode base64 data, ignoring: %s", rvalue);
1025
1026         assert(sz > 0);
1027
1028         if (c->stdin_data_size + sz < c->stdin_data_size || /* check for overflow */
1029             c->stdin_data_size + sz > EXEC_STDIN_DATA_MAX) {
1030                 log_syntax(unit, LOG_ERR, filename, line, 0, "Standard input data too large (%zu), maximum of %zu permitted, ignoring.", c->stdin_data_size + sz, (size_t) EXEC_STDIN_DATA_MAX);
1031                 return -E2BIG;
1032         }
1033
1034         q = realloc(c->stdin_data, c->stdin_data_size + sz);
1035         if (!q)
1036                 return log_oom();
1037
1038         memcpy((uint8_t*) q + c->stdin_data_size, p, sz);
1039
1040         c->stdin_data = q;
1041         c->stdin_data_size += sz;
1042
1043         return 0;
1044 }
1045
1046 int config_parse_exec_output(
1047                 const char *unit,
1048                 const char *filename,
1049                 unsigned line,
1050                 const char *section,
1051                 unsigned section_line,
1052                 const char *lvalue,
1053                 int ltype,
1054                 const char *rvalue,
1055                 void *data,
1056                 void *userdata) {
1057
1058         _cleanup_free_ char *resolved = NULL;
1059         const char *n;
1060         ExecContext *c = data;
1061         const Unit *u = userdata;
1062         ExecOutput eo;
1063         int r;
1064
1065         assert(data);
1066         assert(filename);
1067         assert(line);
1068         assert(lvalue);
1069         assert(rvalue);
1070
1071         n = startswith(rvalue, "fd:");
1072         if (n) {
1073                 r = unit_full_printf(u, n, &resolved);
1074                 if (r < 0)
1075                         return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s: %m", n);
1076
1077                 if (isempty(resolved))
1078                         resolved = mfree(resolved);
1079                 else if (!fdname_is_valid(resolved)) {
1080                         log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid file descriptor name: %s", resolved);
1081                         return -ENOEXEC;
1082                 }
1083
1084                 eo = EXEC_OUTPUT_NAMED_FD;
1085
1086         } else if ((n = startswith(rvalue, "file:"))) {
1087
1088                 r = unit_full_printf(u, n, &resolved);
1089                 if (r < 0)
1090                         return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s: %m", n);
1091
1092                 r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE | PATH_CHECK_FATAL, unit, filename, line, lvalue);
1093                 if (r < 0)
1094                         return -ENOEXEC;
1095
1096                 eo = EXEC_OUTPUT_FILE;
1097
1098         } else if ((n = startswith(rvalue, "append:"))) {
1099
1100                 r = unit_full_printf(u, n, &resolved);
1101                 if (r < 0)
1102                         return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s: %m", n);
1103
1104                 r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE | PATH_CHECK_FATAL, unit, filename, line, lvalue);
1105                 if (r < 0)
1106                         return -ENOEXEC;
1107
1108                 eo = EXEC_OUTPUT_FILE_APPEND;
1109         } else {
1110                 eo = exec_output_from_string(rvalue);
1111                 if (eo < 0) {
1112                         log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse output specifier, ignoring: %s", rvalue);
1113                         return 0;
1114                 }
1115         }
1116
1117         if (streq(lvalue, "StandardOutput")) {
1118                 if (eo == EXEC_OUTPUT_NAMED_FD)
1119                         free_and_replace(c->stdio_fdname[STDOUT_FILENO], resolved);
1120                 else
1121                         free_and_replace(c->stdio_file[STDOUT_FILENO], resolved);
1122
1123                 c->std_output = eo;
1124
1125         } else {
1126                 assert(streq(lvalue, "StandardError"));
1127
1128                 if (eo == EXEC_OUTPUT_NAMED_FD)
1129                         free_and_replace(c->stdio_fdname[STDERR_FILENO], resolved);
1130                 else
1131                         free_and_replace(c->stdio_file[STDERR_FILENO], resolved);
1132
1133                 c->std_error = eo;
1134         }
1135
1136         return 0;
1137 }
1138
1139 int config_parse_exec_io_class(const char *unit,
1140                                const char *filename,
1141                                unsigned line,
1142                                const char *section,
1143                                unsigned section_line,
1144                                const char *lvalue,
1145                                int ltype,
1146                                const char *rvalue,
1147                                void *data,
1148                                void *userdata) {
1149
1150         ExecContext *c = data;
1151         int x;
1152
1153         assert(filename);
1154         assert(lvalue);
1155         assert(rvalue);
1156         assert(data);
1157
1158         if (isempty(rvalue)) {
1159                 c->ioprio_set = false;
1160                 c->ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 0);
1161                 return 0;
1162         }
1163
1164         x = ioprio_class_from_string(rvalue);
1165         if (x < 0) {
1166                 log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse IO scheduling class, ignoring: %s", rvalue);
1167                 return 0;
1168         }
1169
1170         c->ioprio = IOPRIO_PRIO_VALUE(x, IOPRIO_PRIO_DATA(c->ioprio));
1171         c->ioprio_set = true;
1172
1173         return 0;
1174 }
1175
1176 int config_parse_exec_io_priority(const char *unit,
1177                                   const char *filename,
1178                                   unsigned line,
1179                                   const char *section,
1180                                   unsigned section_line,
1181                                   const char *lvalue,
1182                                   int ltype,
1183                                   const char *rvalue,
1184                                   void *data,
1185                                   void *userdata) {
1186
1187         ExecContext *c = data;
1188         int i, r;
1189
1190         assert(filename);
1191         assert(lvalue);
1192         assert(rvalue);
1193         assert(data);
1194
1195         if (isempty(rvalue)) {
1196                 c->ioprio_set = false;
1197                 c->ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 0);
1198                 return 0;
1199         }
1200
1201         r = ioprio_parse_priority(rvalue, &i);
1202         if (r < 0) {
1203                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse IO priority, ignoring: %s", rvalue);
1204                 return 0;
1205         }
1206
1207         c->ioprio = IOPRIO_PRIO_VALUE(IOPRIO_PRIO_CLASS(c->ioprio), i);
1208         c->ioprio_set = true;
1209
1210         return 0;
1211 }
1212
1213 int config_parse_exec_cpu_sched_policy(const char *unit,
1214                                        const char *filename,
1215                                        unsigned line,
1216                                        const char *section,
1217                                        unsigned section_line,
1218                                        const char *lvalue,
1219                                        int ltype,
1220                                        const char *rvalue,
1221                                        void *data,
1222                                        void *userdata) {
1223
1224         ExecContext *c = data;
1225         int x;
1226
1227         assert(filename);
1228         assert(lvalue);
1229         assert(rvalue);
1230         assert(data);
1231
1232         if (isempty(rvalue)) {
1233                 c->cpu_sched_set = false;
1234                 c->cpu_sched_policy = SCHED_OTHER;
1235                 c->cpu_sched_priority = 0;
1236                 return 0;
1237         }
1238
1239         x = sched_policy_from_string(rvalue);
1240         if (x < 0) {
1241                 log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse CPU scheduling policy, ignoring: %s", rvalue);
1242                 return 0;
1243         }
1244
1245         c->cpu_sched_policy = x;
1246         /* Moving to or from real-time policy? We need to adjust the priority */
1247         c->cpu_sched_priority = CLAMP(c->cpu_sched_priority, sched_get_priority_min(x), sched_get_priority_max(x));
1248         c->cpu_sched_set = true;
1249
1250         return 0;
1251 }
1252
1253 int config_parse_numa_mask(const char *unit,
1254                            const char *filename,
1255                            unsigned line,
1256                            const char *section,
1257                            unsigned section_line,
1258                            const char *lvalue,
1259                            int ltype,
1260                            const char *rvalue,
1261                            void *data,
1262                            void *userdata) {
1263         int r;
1264         NUMAPolicy *p = data;
1265
1266         assert(filename);
1267         assert(lvalue);
1268         assert(rvalue);
1269         assert(data);
1270
1271         r = parse_cpu_set_extend(rvalue, &p->nodes, true, unit, filename, line, lvalue);
1272         if (r < 0) {
1273                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse NUMA node mask, ignoring: %s", rvalue);
1274                 return 0;
1275         }
1276
1277         return r;
1278 }
1279
1280 int config_parse_exec_cpu_sched_prio(const char *unit,
1281                                      const char *filename,
1282                                      unsigned line,
1283                                      const char *section,
1284                                      unsigned section_line,
1285                                      const char *lvalue,
1286                                      int ltype,
1287                                      const char *rvalue,
1288                                      void *data,
1289                                      void *userdata) {
1290
1291         ExecContext *c = data;
1292         int i, min, max, r;
1293
1294         assert(filename);
1295         assert(lvalue);
1296         assert(rvalue);
1297         assert(data);
1298
1299         r = safe_atoi(rvalue, &i);
1300         if (r < 0) {
1301                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse CPU scheduling priority, ignoring: %s", rvalue);
1302                 return 0;
1303         }
1304
1305         /* On Linux RR/FIFO range from 1 to 99 and OTHER/BATCH may only be 0 */
1306         min = sched_get_priority_min(c->cpu_sched_policy);
1307         max = sched_get_priority_max(c->cpu_sched_policy);
1308
1309         if (i < min || i > max) {
1310                 log_syntax(unit, LOG_ERR, filename, line, 0, "CPU scheduling priority is out of range, ignoring: %s", rvalue);
1311                 return 0;
1312         }
1313
1314         c->cpu_sched_priority = i;
1315         c->cpu_sched_set = true;
1316
1317         return 0;
1318 }
1319
1320 int config_parse_exec_cpu_affinity(const char *unit,
1321                                    const char *filename,
1322                                    unsigned line,
1323                                    const char *section,
1324                                    unsigned section_line,
1325                                    const char *lvalue,
1326                                    int ltype,
1327                                    const char *rvalue,
1328                                    void *data,
1329                                    void *userdata) {
1330
1331         ExecContext *c = data;
1332
1333         assert(filename);
1334         assert(lvalue);
1335         assert(rvalue);
1336         assert(data);
1337
1338         return parse_cpu_set_extend(rvalue, &c->cpu_set, true, unit, filename, line, lvalue);
1339 }
1340
1341 int config_parse_capability_set(
1342                 const char *unit,
1343                 const char *filename,
1344                 unsigned line,
1345                 const char *section,
1346                 unsigned section_line,
1347                 const char *lvalue,
1348                 int ltype,
1349                 const char *rvalue,
1350                 void *data,
1351                 void *userdata) {
1352
1353         uint64_t *capability_set = data;
1354         uint64_t sum = 0, initial = 0;
1355         bool invert = false;
1356         int r;
1357
1358         assert(filename);
1359         assert(lvalue);
1360         assert(rvalue);
1361         assert(data);
1362
1363         if (rvalue[0] == '~') {
1364                 invert = true;
1365                 rvalue++;
1366         }
1367
1368         if (streq(lvalue, "CapabilityBoundingSet"))
1369                 initial = CAP_ALL; /* initialized to all bits on */
1370         /* else "AmbientCapabilities" initialized to all bits off */
1371
1372         r = capability_set_from_string(rvalue, &sum);
1373         if (r < 0) {
1374                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse %s= specifier '%s', ignoring: %m", lvalue, rvalue);
1375                 return 0;
1376         }
1377
1378         if (sum == 0 || *capability_set == initial)
1379                 /* "", "~" or uninitialized data -> replace */
1380                 *capability_set = invert ? ~sum : sum;
1381         else {
1382                 /* previous data -> merge */
1383                 if (invert)
1384                         *capability_set &= ~sum;
1385                 else
1386                         *capability_set |= sum;
1387         }
1388
1389         return 0;
1390 }
1391
1392 int config_parse_exec_selinux_context(
1393                 const char *unit,
1394                 const char *filename,
1395                 unsigned line,
1396                 const char *section,
1397                 unsigned section_line,
1398                 const char *lvalue,
1399                 int ltype,
1400                 const char *rvalue,
1401                 void *data,
1402                 void *userdata) {
1403
1404         ExecContext *c = data;
1405         const Unit *u = userdata;
1406         bool ignore;
1407         char *k;
1408         int r;
1409
1410         assert(filename);
1411         assert(lvalue);
1412         assert(rvalue);
1413         assert(data);
1414
1415         if (isempty(rvalue)) {
1416                 c->selinux_context = mfree(c->selinux_context);
1417                 c->selinux_context_ignore = false;
1418                 return 0;
1419         }
1420
1421         if (rvalue[0] == '-') {
1422                 ignore = true;
1423                 rvalue++;
1424         } else
1425                 ignore = false;
1426
1427         r = unit_full_printf(u, rvalue, &k);
1428         if (r < 0) {
1429                 log_syntax(unit, LOG_ERR, filename, line, r,
1430                            "Failed to resolve unit specifiers in '%s'%s: %m",
1431                            rvalue, ignore ? ", ignoring" : "");
1432                 return ignore ? 0 : -ENOEXEC;
1433         }
1434
1435         free_and_replace(c->selinux_context, k);
1436         c->selinux_context_ignore = ignore;
1437
1438         return 0;
1439 }
1440
1441 int config_parse_exec_apparmor_profile(
1442                 const char *unit,
1443                 const char *filename,
1444                 unsigned line,
1445                 const char *section,
1446                 unsigned section_line,
1447                 const char *lvalue,
1448                 int ltype,
1449                 const char *rvalue,
1450                 void *data,
1451                 void *userdata) {
1452
1453         ExecContext *c = data;
1454         const Unit *u = userdata;
1455         bool ignore;
1456         char *k;
1457         int r;
1458
1459         assert(filename);
1460         assert(lvalue);
1461         assert(rvalue);
1462         assert(data);
1463
1464         if (isempty(rvalue)) {
1465                 c->apparmor_profile = mfree(c->apparmor_profile);
1466                 c->apparmor_profile_ignore = false;
1467                 return 0;
1468         }
1469
1470         if (rvalue[0] == '-') {
1471                 ignore = true;
1472                 rvalue++;
1473         } else
1474                 ignore = false;
1475
1476         r = unit_full_printf(u, rvalue, &k);
1477         if (r < 0) {
1478                 log_syntax(unit, LOG_ERR, filename, line, r,
1479                            "Failed to resolve unit specifiers in '%s'%s: %m",
1480                            rvalue, ignore ? ", ignoring" : "");
1481                 return ignore ? 0 : -ENOEXEC;
1482         }
1483
1484         free_and_replace(c->apparmor_profile, k);
1485         c->apparmor_profile_ignore = ignore;
1486
1487         return 0;
1488 }
1489
1490 int config_parse_exec_smack_process_label(
1491                 const char *unit,
1492                 const char *filename,
1493                 unsigned line,
1494                 const char *section,
1495                 unsigned section_line,
1496                 const char *lvalue,
1497                 int ltype,
1498                 const char *rvalue,
1499                 void *data,
1500                 void *userdata) {
1501
1502         ExecContext *c = data;
1503         const Unit *u = userdata;
1504         bool ignore;
1505         char *k;
1506         int r;
1507
1508         assert(filename);
1509         assert(lvalue);
1510         assert(rvalue);
1511         assert(data);
1512
1513         if (isempty(rvalue)) {
1514                 c->smack_process_label = mfree(c->smack_process_label);
1515                 c->smack_process_label_ignore = false;
1516                 return 0;
1517         }
1518
1519         if (rvalue[0] == '-') {
1520                 ignore = true;
1521                 rvalue++;
1522         } else
1523                 ignore = false;
1524
1525         r = unit_full_printf(u, rvalue, &k);
1526         if (r < 0) {
1527                 log_syntax(unit, LOG_ERR, filename, line, r,
1528                            "Failed to resolve unit specifiers in '%s'%s: %m",
1529                            rvalue, ignore ? ", ignoring" : "");
1530                 return ignore ? 0 : -ENOEXEC;
1531         }
1532
1533         free_and_replace(c->smack_process_label, k);
1534         c->smack_process_label_ignore = ignore;
1535
1536         return 0;
1537 }
1538
1539 int config_parse_timer(
1540                 const char *unit,
1541                 const char *filename,
1542                 unsigned line,
1543                 const char *section,
1544                 unsigned section_line,
1545                 const char *lvalue,
1546                 int ltype,
1547                 const char *rvalue,
1548                 void *data,
1549                 void *userdata) {
1550
1551         _cleanup_(calendar_spec_freep) CalendarSpec *c = NULL;
1552         _cleanup_free_ char *k = NULL;
1553         const Unit *u = userdata;
1554         Timer *t = data;
1555         usec_t usec = 0;
1556         TimerValue *v;
1557         int r;
1558
1559         assert(filename);
1560         assert(lvalue);
1561         assert(rvalue);
1562         assert(data);
1563
1564         if (isempty(rvalue)) {
1565                 /* Empty assignment resets list */
1566                 timer_free_values(t);
1567                 return 0;
1568         }
1569
1570         r = unit_full_printf(u, rvalue, &k);
1571         if (r < 0) {
1572                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
1573                 return 0;
1574         }
1575
1576         if (ltype == TIMER_CALENDAR) {
1577                 r = calendar_spec_from_string(k, &c);
1578                 if (r < 0) {
1579                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse calendar specification, ignoring: %s", k);
1580                         return 0;
1581                 }
1582         } else {
1583                 r = parse_sec(k, &usec);
1584                 if (r < 0) {
1585                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse timer value, ignoring: %s", k);
1586                         return 0;
1587                 }
1588         }
1589
1590         v = new(TimerValue, 1);
1591         if (!v)
1592                 return log_oom();
1593
1594         *v = (TimerValue) {
1595                 .base = ltype,
1596                 .value = usec,
1597                 .calendar_spec = TAKE_PTR(c),
1598         };
1599
1600         LIST_PREPEND(value, t->values, v);
1601
1602         return 0;
1603 }
1604
1605 int config_parse_trigger_unit(
1606                 const char *unit,
1607                 const char *filename,
1608                 unsigned line,
1609                 const char *section,
1610                 unsigned section_line,
1611                 const char *lvalue,
1612                 int ltype,
1613                 const char *rvalue,
1614                 void *data,
1615                 void *userdata) {
1616
1617         _cleanup_free_ char *p = NULL;
1618         Unit *u = data;
1619         UnitType type;
1620         int r;
1621
1622         assert(filename);
1623         assert(lvalue);
1624         assert(rvalue);
1625         assert(data);
1626
1627         if (!hashmap_isempty(u->dependencies[UNIT_TRIGGERS])) {
1628                 log_syntax(unit, LOG_ERR, filename, line, 0, "Multiple units to trigger specified, ignoring: %s", rvalue);
1629                 return 0;
1630         }
1631
1632         r = unit_name_printf(u, rvalue, &p);
1633         if (r < 0) {
1634                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue);
1635                 return 0;
1636         }
1637
1638         type = unit_name_to_type(p);
1639         if (type < 0) {
1640                 log_syntax(unit, LOG_ERR, filename, line, 0, "Unit type not valid, ignoring: %s", rvalue);
1641                 return 0;
1642         }
1643         if (unit_has_name(u, p)) {
1644                 log_syntax(unit, LOG_ERR, filename, line, 0, "Units cannot trigger themselves, ignoring: %s", rvalue);
1645                 return 0;
1646         }
1647
1648         r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_TRIGGERS, p, true, UNIT_DEPENDENCY_FILE);
1649         if (r < 0) {
1650                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to add trigger on %s, ignoring: %m", p);
1651                 return 0;
1652         }
1653
1654         return 0;
1655 }
1656
1657 int config_parse_path_spec(const char *unit,
1658                            const char *filename,
1659                            unsigned line,
1660                            const char *section,
1661                            unsigned section_line,
1662                            const char *lvalue,
1663                            int ltype,
1664                            const char *rvalue,
1665                            void *data,
1666                            void *userdata) {
1667
1668         Path *p = data;
1669         PathSpec *s;
1670         PathType b;
1671         _cleanup_free_ char *k = NULL;
1672         int r;
1673
1674         assert(filename);
1675         assert(lvalue);
1676         assert(rvalue);
1677         assert(data);
1678
1679         if (isempty(rvalue)) {
1680                 /* Empty assignment clears list */
1681                 path_free_specs(p);
1682                 return 0;
1683         }
1684
1685         b = path_type_from_string(lvalue);
1686         if (b < 0) {
1687                 log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse path type, ignoring: %s", lvalue);
1688                 return 0;
1689         }
1690
1691         r = unit_full_printf(UNIT(p), rvalue, &k);
1692         if (r < 0) {
1693                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue);
1694                 return 0;
1695         }
1696
1697         r = path_simplify_and_warn(k, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
1698         if (r < 0)
1699                 return 0;
1700
1701         s = new0(PathSpec, 1);
1702         if (!s)
1703                 return log_oom();
1704
1705         s->unit = UNIT(p);
1706         s->path = TAKE_PTR(k);
1707         s->type = b;
1708         s->inotify_fd = -1;
1709
1710         LIST_PREPEND(spec, p->specs, s);
1711
1712         return 0;
1713 }
1714
1715 int config_parse_socket_service(
1716                 const char *unit,
1717                 const char *filename,
1718                 unsigned line,
1719                 const char *section,
1720                 unsigned section_line,
1721                 const char *lvalue,
1722                 int ltype,
1723                 const char *rvalue,
1724                 void *data,
1725                 void *userdata) {
1726
1727         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1728         _cleanup_free_ char *p = NULL;
1729         Socket *s = data;
1730         Unit *x;
1731         int r;
1732
1733         assert(filename);
1734         assert(lvalue);
1735         assert(rvalue);
1736         assert(data);
1737
1738         r = unit_name_printf(UNIT(s), rvalue, &p);
1739         if (r < 0) {
1740                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s: %m", rvalue);
1741                 return -ENOEXEC;
1742         }
1743
1744         if (!endswith(p, ".service")) {
1745                 log_syntax(unit, LOG_ERR, filename, line, 0, "Unit must be of type service: %s", rvalue);
1746                 return -ENOEXEC;
1747         }
1748
1749         r = manager_load_unit(UNIT(s)->manager, p, NULL, &error, &x);
1750         if (r < 0) {
1751                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to load unit %s: %s", rvalue, bus_error_message(&error, r));
1752                 return -ENOEXEC;
1753         }
1754
1755         unit_ref_set(&s->service, UNIT(s), x);
1756
1757         return 0;
1758 }
1759
1760 int config_parse_fdname(
1761                 const char *unit,
1762                 const char *filename,
1763                 unsigned line,
1764                 const char *section,
1765                 unsigned section_line,
1766                 const char *lvalue,
1767                 int ltype,
1768                 const char *rvalue,
1769                 void *data,
1770                 void *userdata) {
1771
1772         _cleanup_free_ char *p = NULL;
1773         Socket *s = data;
1774         int r;
1775
1776         assert(filename);
1777         assert(lvalue);
1778         assert(rvalue);
1779         assert(data);
1780
1781         if (isempty(rvalue)) {
1782                 s->fdname = mfree(s->fdname);
1783                 return 0;
1784         }
1785
1786         r = unit_full_printf(UNIT(s), rvalue, &p);
1787         if (r < 0) {
1788                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
1789                 return 0;
1790         }
1791
1792         if (!fdname_is_valid(p)) {
1793                 log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid file descriptor name, ignoring: %s", p);
1794                 return 0;
1795         }
1796
1797         return free_and_replace(s->fdname, p);
1798 }
1799
1800 int config_parse_service_sockets(
1801                 const char *unit,
1802                 const char *filename,
1803                 unsigned line,
1804                 const char *section,
1805                 unsigned section_line,
1806                 const char *lvalue,
1807                 int ltype,
1808                 const char *rvalue,
1809                 void *data,
1810                 void *userdata) {
1811
1812         Service *s = data;
1813         const char *p;
1814         int r;
1815
1816         assert(filename);
1817         assert(lvalue);
1818         assert(rvalue);
1819         assert(data);
1820
1821         p = rvalue;
1822         for (;;) {
1823                 _cleanup_free_ char *word = NULL, *k = NULL;
1824
1825                 r = extract_first_word(&p, &word, NULL, 0);
1826                 if (r == 0)
1827                         break;
1828                 if (r == -ENOMEM)
1829                         return log_oom();
1830                 if (r < 0) {
1831                         log_syntax(unit, LOG_ERR, filename, line, r, "Trailing garbage in sockets, ignoring: %s", rvalue);
1832                         break;
1833                 }
1834
1835                 r = unit_name_printf(UNIT(s), word, &k);
1836                 if (r < 0) {
1837                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", word);
1838                         continue;
1839                 }
1840
1841                 if (!endswith(k, ".socket")) {
1842                         log_syntax(unit, LOG_ERR, filename, line, 0, "Unit must be of type socket, ignoring: %s", k);
1843                         continue;
1844                 }
1845
1846                 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_WANTS, UNIT_AFTER, k, true, UNIT_DEPENDENCY_FILE);
1847                 if (r < 0)
1848                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to add dependency on %s, ignoring: %m", k);
1849
1850                 r = unit_add_dependency_by_name(UNIT(s), UNIT_TRIGGERED_BY, k, true, UNIT_DEPENDENCY_FILE);
1851                 if (r < 0)
1852                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to add dependency on %s, ignoring: %m", k);
1853         }
1854
1855         return 0;
1856 }
1857
1858 int config_parse_bus_name(
1859                 const char *unit,
1860                 const char *filename,
1861                 unsigned line,
1862                 const char *section,
1863                 unsigned section_line,
1864                 const char *lvalue,
1865                 int ltype,
1866                 const char *rvalue,
1867                 void *data,
1868                 void *userdata) {
1869
1870         _cleanup_free_ char *k = NULL;
1871         const Unit *u = userdata;
1872         int r;
1873
1874         assert(filename);
1875         assert(lvalue);
1876         assert(rvalue);
1877         assert(u);
1878
1879         r = unit_full_printf(u, rvalue, &k);
1880         if (r < 0) {
1881                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue);
1882                 return 0;
1883         }
1884
1885         if (!service_name_is_valid(k)) {
1886                 log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid bus name, ignoring: %s", k);
1887                 return 0;
1888         }
1889
1890         return config_parse_string(unit, filename, line, section, section_line, lvalue, ltype, k, data, userdata);
1891 }
1892
1893 int config_parse_service_timeout(
1894                 const char *unit,
1895                 const char *filename,
1896                 unsigned line,
1897                 const char *section,
1898                 unsigned section_line,
1899                 const char *lvalue,
1900                 int ltype,
1901                 const char *rvalue,
1902                 void *data,
1903                 void *userdata) {
1904
1905         Service *s = userdata;
1906         usec_t usec;
1907         int r;
1908
1909         assert(filename);
1910         assert(lvalue);
1911         assert(rvalue);
1912         assert(s);
1913
1914         /* This is called for two cases: TimeoutSec= and TimeoutStartSec=. */
1915
1916         /* Traditionally, these options accepted 0 to disable the timeouts. However, a timeout of 0 suggests it happens
1917          * immediately, hence fix this to become USEC_INFINITY instead. This is in-line with how we internally handle
1918          * all other timeouts. */
1919         r = parse_sec_fix_0(rvalue, &usec);
1920         if (r < 0) {
1921                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse %s= parameter, ignoring: %s", lvalue, rvalue);
1922                 return 0;
1923         }
1924
1925         s->start_timeout_defined = true;
1926         s->timeout_start_usec = usec;
1927
1928         if (streq(lvalue, "TimeoutSec"))
1929                 s->timeout_stop_usec = usec;
1930
1931         return 0;
1932 }
1933
1934 int config_parse_service_timeout_abort(
1935                 const char *unit,
1936                 const char *filename,
1937                 unsigned line,
1938                 const char *section,
1939                 unsigned section_line,
1940                 const char *lvalue,
1941                 int ltype,
1942                 const char *rvalue,
1943                 void *data,
1944                 void *userdata) {
1945
1946         Service *s = userdata;
1947         int r;
1948
1949         assert(filename);
1950         assert(lvalue);
1951         assert(rvalue);
1952         assert(s);
1953
1954         rvalue += strspn(rvalue, WHITESPACE);
1955         if (isempty(rvalue)) {
1956                 s->timeout_abort_set = false;
1957                 return 0;
1958         }
1959
1960         r = parse_sec(rvalue, &s->timeout_abort_usec);
1961         if (r < 0) {
1962                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse TimeoutAbortSec= setting, ignoring: %s", rvalue);
1963                 return 0;
1964         }
1965
1966         s->timeout_abort_set = true;
1967         return 0;
1968 }
1969
1970 int config_parse_sec_fix_0(
1971                 const char *unit,
1972                 const char *filename,
1973                 unsigned line,
1974                 const char *section,
1975                 unsigned section_line,
1976                 const char *lvalue,
1977                 int ltype,
1978                 const char *rvalue,
1979                 void *data,
1980                 void *userdata) {
1981
1982         usec_t *usec = data;
1983         int r;
1984
1985         assert(filename);
1986         assert(lvalue);
1987         assert(rvalue);
1988         assert(usec);
1989
1990         /* This is pretty much like config_parse_sec(), except that this treats a time of 0 as infinity, for
1991          * compatibility with older versions of systemd where 0 instead of infinity was used as indicator to turn off a
1992          * timeout. */
1993
1994         r = parse_sec_fix_0(rvalue, usec);
1995         if (r < 0) {
1996                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse %s= parameter, ignoring: %s", lvalue, rvalue);
1997                 return 0;
1998         }
1999
2000         return 0;
2001 }
2002
2003 int config_parse_user_group_compat(
2004                 const char *unit,
2005                 const char *filename,
2006                 unsigned line,
2007                 const char *section,
2008                 unsigned section_line,
2009                 const char *lvalue,
2010                 int ltype,
2011                 const char *rvalue,
2012                 void *data,
2013                 void *userdata) {
2014
2015         _cleanup_free_ char *k = NULL;
2016         char **user = data;
2017         const Unit *u = userdata;
2018         int r;
2019
2020         assert(filename);
2021         assert(lvalue);
2022         assert(rvalue);
2023         assert(u);
2024
2025         if (isempty(rvalue)) {
2026                 *user = mfree(*user);
2027                 return 0;
2028         }
2029
2030         r = unit_full_printf(u, rvalue, &k);
2031         if (r < 0) {
2032                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s: %m", rvalue);
2033                 return -ENOEXEC;
2034         }
2035
2036         if (!valid_user_group_name_or_id_compat(k)) {
2037                 log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid user/group name or numeric ID: %s", k);
2038                 return -ENOEXEC;
2039         }
2040
2041         return free_and_replace(*user, k);
2042 }
2043
2044 int config_parse_user_group_strv_compat(
2045                 const char *unit,
2046                 const char *filename,
2047                 unsigned line,
2048                 const char *section,
2049                 unsigned section_line,
2050                 const char *lvalue,
2051                 int ltype,
2052                 const char *rvalue,
2053                 void *data,
2054                 void *userdata) {
2055
2056         char ***users = data;
2057         const Unit *u = userdata;
2058         const char *p = rvalue;
2059         int r;
2060
2061         assert(filename);
2062         assert(lvalue);
2063         assert(rvalue);
2064         assert(u);
2065
2066         if (isempty(rvalue)) {
2067                 *users = strv_free(*users);
2068                 return 0;
2069         }
2070
2071         for (;;) {
2072                 _cleanup_free_ char *word = NULL, *k = NULL;
2073
2074                 r = extract_first_word(&p, &word, NULL, 0);
2075                 if (r == 0)
2076                         break;
2077                 if (r == -ENOMEM)
2078                         return log_oom();
2079                 if (r < 0) {
2080                         log_syntax(unit, LOG_ERR, filename, line, r, "Invalid syntax: %s", rvalue);
2081                         return -ENOEXEC;
2082                 }
2083
2084                 r = unit_full_printf(u, word, &k);
2085                 if (r < 0) {
2086                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s: %m", word);
2087                         return -ENOEXEC;
2088                 }
2089
2090                 if (!valid_user_group_name_or_id_compat(k)) {
2091                         log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid user/group name or numeric ID: %s", k);
2092                         return -ENOEXEC;
2093                 }
2094
2095                 r = strv_push(users, k);
2096                 if (r < 0)
2097                         return log_oom();
2098
2099                 k = NULL;
2100         }
2101
2102         return 0;
2103 }
2104
2105 int config_parse_working_directory(
2106                 const char *unit,
2107                 const char *filename,
2108                 unsigned line,
2109                 const char *section,
2110                 unsigned section_line,
2111                 const char *lvalue,
2112                 int ltype,
2113                 const char *rvalue,
2114                 void *data,
2115                 void *userdata) {
2116
2117         ExecContext *c = data;
2118         const Unit *u = userdata;
2119         bool missing_ok;
2120         int r;
2121
2122         assert(filename);
2123         assert(lvalue);
2124         assert(rvalue);
2125         assert(c);
2126         assert(u);
2127
2128         if (isempty(rvalue)) {
2129                 c->working_directory_home = false;
2130                 c->working_directory = mfree(c->working_directory);
2131                 return 0;
2132         }
2133
2134         if (rvalue[0] == '-') {
2135                 missing_ok = true;
2136                 rvalue++;
2137         } else
2138                 missing_ok = false;
2139
2140         if (streq(rvalue, "~")) {
2141                 c->working_directory_home = true;
2142                 c->working_directory = mfree(c->working_directory);
2143         } else {
2144                 _cleanup_free_ char *k = NULL;
2145
2146                 r = unit_full_printf(u, rvalue, &k);
2147                 if (r < 0) {
2148                         log_syntax(unit, LOG_ERR, filename, line, r,
2149                                    "Failed to resolve unit specifiers in working directory path '%s'%s: %m",
2150                                    rvalue, missing_ok ? ", ignoring" : "");
2151                         return missing_ok ? 0 : -ENOEXEC;
2152                 }
2153
2154                 r = path_simplify_and_warn(k, PATH_CHECK_ABSOLUTE | (missing_ok ? 0 : PATH_CHECK_FATAL), unit, filename, line, lvalue);
2155                 if (r < 0)
2156                         return missing_ok ? 0 : -ENOEXEC;
2157
2158                 c->working_directory_home = false;
2159                 free_and_replace(c->working_directory, k);
2160         }
2161
2162         c->working_directory_missing_ok = missing_ok;
2163         return 0;
2164 }
2165
2166 int config_parse_unit_env_file(const char *unit,
2167                                const char *filename,
2168                                unsigned line,
2169                                const char *section,
2170                                unsigned section_line,
2171                                const char *lvalue,
2172                                int ltype,
2173                                const char *rvalue,
2174                                void *data,
2175                                void *userdata) {
2176
2177         char ***env = data;
2178         const Unit *u = userdata;
2179         _cleanup_free_ char *n = NULL;
2180         int r;
2181
2182         assert(filename);
2183         assert(lvalue);
2184         assert(rvalue);
2185         assert(data);
2186
2187         if (isempty(rvalue)) {
2188                 /* Empty assignment frees the list */
2189                 *env = strv_free(*env);
2190                 return 0;
2191         }
2192
2193         r = unit_full_printf(u, rvalue, &n);
2194         if (r < 0) {
2195                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
2196                 return 0;
2197         }
2198
2199         r = path_simplify_and_warn(n[0] == '-' ? n + 1 : n, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
2200         if (r < 0)
2201                 return 0;
2202
2203         r = strv_push(env, n);
2204         if (r < 0)
2205                 return log_oom();
2206
2207         n = NULL;
2208
2209         return 0;
2210 }
2211
2212 int config_parse_environ(
2213                 const char *unit,
2214                 const char *filename,
2215                 unsigned line,
2216                 const char *section,
2217                 unsigned section_line,
2218                 const char *lvalue,
2219                 int ltype,
2220                 const char *rvalue,
2221                 void *data,
2222                 void *userdata) {
2223
2224         const Unit *u = userdata;
2225         char ***env = data;
2226         const char *p;
2227         int r;
2228
2229         assert(filename);
2230         assert(lvalue);
2231         assert(rvalue);
2232         assert(data);
2233
2234         if (isempty(rvalue)) {
2235                 /* Empty assignment resets the list */
2236                 *env = strv_free(*env);
2237                 return 0;
2238         }
2239
2240         for (p = rvalue;; ) {
2241                 _cleanup_free_ char *word = NULL, *k = NULL;
2242
2243                 r = extract_first_word(&p, &word, NULL, EXTRACT_CUNESCAPE|EXTRACT_UNQUOTE);
2244                 if (r == 0)
2245                         return 0;
2246                 if (r == -ENOMEM)
2247                         return log_oom();
2248                 if (r < 0) {
2249                         log_syntax(unit, LOG_WARNING, filename, line, r,
2250                                    "Invalid syntax, ignoring: %s", rvalue);
2251                         return 0;
2252                 }
2253
2254                 if (u) {
2255                         r = unit_full_printf(u, word, &k);
2256                         if (r < 0) {
2257                                 log_syntax(unit, LOG_ERR, filename, line, r,
2258                                            "Failed to resolve unit specifiers in %s, ignoring: %m", word);
2259                                 continue;
2260                         }
2261                 } else
2262                         k = TAKE_PTR(word);
2263
2264                 if (!env_assignment_is_valid(k)) {
2265                         log_syntax(unit, LOG_ERR, filename, line, 0,
2266                                    "Invalid environment assignment, ignoring: %s", k);
2267                         continue;
2268                 }
2269
2270                 r = strv_env_replace(env, k);
2271                 if (r < 0)
2272                         return log_oom();
2273
2274                 k = NULL;
2275         }
2276 }
2277
2278 int config_parse_pass_environ(
2279                 const char *unit,
2280                 const char *filename,
2281                 unsigned line,
2282                 const char *section,
2283                 unsigned section_line,
2284                 const char *lvalue,
2285                 int ltype,
2286                 const char *rvalue,
2287                 void *data,
2288                 void *userdata) {
2289
2290         _cleanup_strv_free_ char **n = NULL;
2291         size_t nlen = 0, nbufsize = 0;
2292         char*** passenv = data;
2293         const char *p = rvalue;
2294         const Unit *u = userdata;
2295         int r;
2296
2297         assert(filename);
2298         assert(lvalue);
2299         assert(rvalue);
2300         assert(data);
2301
2302         if (isempty(rvalue)) {
2303                 /* Empty assignment resets the list */
2304                 *passenv = strv_free(*passenv);
2305                 return 0;
2306         }
2307
2308         for (;;) {
2309                 _cleanup_free_ char *word = NULL, *k = NULL;
2310
2311                 r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
2312                 if (r == 0)
2313                         break;
2314                 if (r == -ENOMEM)
2315                         return log_oom();
2316                 if (r < 0) {
2317                         log_syntax(unit, LOG_ERR, filename, line, r,
2318                                    "Trailing garbage in %s, ignoring: %s", lvalue, rvalue);
2319                         break;
2320                 }
2321
2322                 if (u) {
2323                         r = unit_full_printf(u, word, &k);
2324                         if (r < 0) {
2325                                 log_syntax(unit, LOG_ERR, filename, line, r,
2326                                            "Failed to resolve specifiers in %s, ignoring: %m", word);
2327                                 continue;
2328                         }
2329                 } else
2330                         k = TAKE_PTR(word);
2331
2332                 if (!env_name_is_valid(k)) {
2333                         log_syntax(unit, LOG_ERR, filename, line, 0,
2334                                    "Invalid environment name for %s, ignoring: %s", lvalue, k);
2335                         continue;
2336                 }
2337
2338                 if (!GREEDY_REALLOC(n, nbufsize, nlen + 2))
2339                         return log_oom();
2340
2341                 n[nlen++] = TAKE_PTR(k);
2342                 n[nlen] = NULL;
2343         }
2344
2345         if (n) {
2346                 r = strv_extend_strv(passenv, n, true);
2347                 if (r < 0)
2348                         return r;
2349         }
2350
2351         return 0;
2352 }
2353
2354 int config_parse_unset_environ(
2355                 const char *unit,
2356                 const char *filename,
2357                 unsigned line,
2358                 const char *section,
2359                 unsigned section_line,
2360                 const char *lvalue,
2361                 int ltype,
2362                 const char *rvalue,
2363                 void *data,
2364                 void *userdata) {
2365
2366         _cleanup_strv_free_ char **n = NULL;
2367         size_t nlen = 0, nbufsize = 0;
2368         char*** unsetenv = data;
2369         const char *p = rvalue;
2370         const Unit *u = userdata;
2371         int r;
2372
2373         assert(filename);
2374         assert(lvalue);
2375         assert(rvalue);
2376         assert(data);
2377
2378         if (isempty(rvalue)) {
2379                 /* Empty assignment resets the list */
2380                 *unsetenv = strv_free(*unsetenv);
2381                 return 0;
2382         }
2383
2384         for (;;) {
2385                 _cleanup_free_ char *word = NULL, *k = NULL;
2386
2387                 r = extract_first_word(&p, &word, NULL, EXTRACT_CUNESCAPE|EXTRACT_UNQUOTE);
2388                 if (r == 0)
2389                         break;
2390                 if (r == -ENOMEM)
2391                         return log_oom();
2392                 if (r < 0) {
2393                         log_syntax(unit, LOG_ERR, filename, line, r,
2394                                    "Trailing garbage in %s, ignoring: %s", lvalue, rvalue);
2395                         break;
2396                 }
2397
2398                 if (u) {
2399                         r = unit_full_printf(u, word, &k);
2400                         if (r < 0) {
2401                                 log_syntax(unit, LOG_ERR, filename, line, r,
2402                                            "Failed to resolve unit specifiers in %s, ignoring: %m", word);
2403                                 continue;
2404                         }
2405                 } else
2406                         k = TAKE_PTR(word);
2407
2408                 if (!env_assignment_is_valid(k) && !env_name_is_valid(k)) {
2409                         log_syntax(unit, LOG_ERR, filename, line, 0,
2410                                    "Invalid environment name or assignment %s, ignoring: %s", lvalue, k);
2411                         continue;
2412                 }
2413
2414                 if (!GREEDY_REALLOC(n, nbufsize, nlen + 2))
2415                         return log_oom();
2416
2417                 n[nlen++] = TAKE_PTR(k);
2418                 n[nlen] = NULL;
2419         }
2420
2421         if (n) {
2422                 r = strv_extend_strv(unsetenv, n, true);
2423                 if (r < 0)
2424                         return r;
2425         }
2426
2427         return 0;
2428 }
2429
2430 int config_parse_log_extra_fields(
2431                 const char *unit,
2432                 const char *filename,
2433                 unsigned line,
2434                 const char *section,
2435                 unsigned section_line,
2436                 const char *lvalue,
2437                 int ltype,
2438                 const char *rvalue,
2439                 void *data,
2440                 void *userdata) {
2441
2442         ExecContext *c = data;
2443         const Unit *u = userdata;
2444         const char *p = rvalue;
2445         int r;
2446
2447         assert(filename);
2448         assert(lvalue);
2449         assert(rvalue);
2450         assert(c);
2451
2452         if (isempty(rvalue)) {
2453                 exec_context_free_log_extra_fields(c);
2454                 return 0;
2455         }
2456
2457         for (;;) {
2458                 _cleanup_free_ char *word = NULL, *k = NULL;
2459                 struct iovec *t;
2460                 const char *eq;
2461
2462                 r = extract_first_word(&p, &word, NULL, EXTRACT_CUNESCAPE|EXTRACT_UNQUOTE);
2463                 if (r == 0)
2464                         return 0;
2465                 if (r == -ENOMEM)
2466                         return log_oom();
2467                 if (r < 0) {
2468                         log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
2469                         return 0;
2470                 }
2471
2472                 r = unit_full_printf(u, word, &k);
2473                 if (r < 0) {
2474                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", word);
2475                         continue;
2476                 }
2477
2478                 eq = strchr(k, '=');
2479                 if (!eq) {
2480                         log_syntax(unit, LOG_ERR, filename, line, 0, "Log field lacks '=' character, ignoring: %s", k);
2481                         continue;
2482                 }
2483
2484                 if (!journal_field_valid(k, eq-k, false)) {
2485                         log_syntax(unit, LOG_ERR, filename, line, 0, "Log field name is invalid, ignoring: %s", k);
2486                         continue;
2487                 }
2488
2489                 t = reallocarray(c->log_extra_fields, c->n_log_extra_fields+1, sizeof(struct iovec));
2490                 if (!t)
2491                         return log_oom();
2492
2493                 c->log_extra_fields = t;
2494                 c->log_extra_fields[c->n_log_extra_fields++] = IOVEC_MAKE_STRING(k);
2495
2496                 k = NULL;
2497         }
2498 }
2499
2500 int config_parse_unit_condition_path(
2501                 const char *unit,
2502                 const char *filename,
2503                 unsigned line,
2504                 const char *section,
2505                 unsigned section_line,
2506                 const char *lvalue,
2507                 int ltype,
2508                 const char *rvalue,
2509                 void *data,
2510                 void *userdata) {
2511
2512         _cleanup_free_ char *p = NULL;
2513         Condition **list = data, *c;
2514         ConditionType t = ltype;
2515         bool trigger, negate;
2516         const Unit *u = userdata;
2517         int r;
2518
2519         assert(filename);
2520         assert(lvalue);
2521         assert(rvalue);
2522         assert(data);
2523
2524         if (isempty(rvalue)) {
2525                 /* Empty assignment resets the list */
2526                 *list = condition_free_list(*list);
2527                 return 0;
2528         }
2529
2530         trigger = rvalue[0] == '|';
2531         if (trigger)
2532                 rvalue++;
2533
2534         negate = rvalue[0] == '!';
2535         if (negate)
2536                 rvalue++;
2537
2538         r = unit_full_printf(u, rvalue, &p);
2539         if (r < 0) {
2540                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue);
2541                 return 0;
2542         }
2543
2544         r = path_simplify_and_warn(p, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
2545         if (r < 0)
2546                 return 0;
2547
2548         c = condition_new(t, p, trigger, negate);
2549         if (!c)
2550                 return log_oom();
2551
2552         LIST_PREPEND(conditions, *list, c);
2553         return 0;
2554 }
2555
2556 int config_parse_unit_condition_string(
2557                 const char *unit,
2558                 const char *filename,
2559                 unsigned line,
2560                 const char *section,
2561                 unsigned section_line,
2562                 const char *lvalue,
2563                 int ltype,
2564                 const char *rvalue,
2565                 void *data,
2566                 void *userdata) {
2567
2568         _cleanup_free_ char *s = NULL;
2569         Condition **list = data, *c;
2570         ConditionType t = ltype;
2571         bool trigger, negate;
2572         const Unit *u = userdata;
2573         int r;
2574
2575         assert(filename);
2576         assert(lvalue);
2577         assert(rvalue);
2578         assert(data);
2579
2580         if (isempty(rvalue)) {
2581                 /* Empty assignment resets the list */
2582                 *list = condition_free_list(*list);
2583                 return 0;
2584         }
2585
2586         trigger = *rvalue == '|';
2587         if (trigger)
2588                 rvalue += 1 + strspn(rvalue + 1, WHITESPACE);
2589
2590         negate = *rvalue == '!';
2591         if (negate)
2592                 rvalue += 1 + strspn(rvalue + 1, WHITESPACE);
2593
2594         r = unit_full_printf(u, rvalue, &s);
2595         if (r < 0) {
2596                 log_syntax(unit, LOG_ERR, filename, line, r,
2597                            "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
2598                 return 0;
2599         }
2600
2601         c = condition_new(t, s, trigger, negate);
2602         if (!c)
2603                 return log_oom();
2604
2605         LIST_PREPEND(conditions, *list, c);
2606         return 0;
2607 }
2608
2609 int config_parse_unit_condition_null(
2610                 const char *unit,
2611                 const char *filename,
2612                 unsigned line,
2613                 const char *section,
2614                 unsigned section_line,
2615                 const char *lvalue,
2616                 int ltype,
2617                 const char *rvalue,
2618                 void *data,
2619                 void *userdata) {
2620
2621         Condition **list = data, *c;
2622         bool trigger, negate;
2623         int b;
2624
2625         assert(filename);
2626         assert(lvalue);
2627         assert(rvalue);
2628         assert(data);
2629
2630         log_syntax(unit, LOG_WARNING, filename, line, 0, "%s= is deprecated, please do not use.", lvalue);
2631
2632         if (isempty(rvalue)) {
2633                 /* Empty assignment resets the list */
2634                 *list = condition_free_list(*list);
2635                 return 0;
2636         }
2637
2638         trigger = rvalue[0] == '|';
2639         if (trigger)
2640                 rvalue++;
2641
2642         negate = rvalue[0] == '!';
2643         if (negate)
2644                 rvalue++;
2645
2646         b = parse_boolean(rvalue);
2647         if (b < 0) {
2648                 log_syntax(unit, LOG_ERR, filename, line, b, "Failed to parse boolean value in condition, ignoring: %s", rvalue);
2649                 return 0;
2650         }
2651
2652         if (!b)
2653                 negate = !negate;
2654
2655         c = condition_new(CONDITION_NULL, NULL, trigger, negate);
2656         if (!c)
2657                 return log_oom();
2658
2659         LIST_PREPEND(conditions, *list, c);
2660         return 0;
2661 }
2662
2663 int config_parse_unit_requires_mounts_for(
2664                 const char *unit,
2665                 const char *filename,
2666                 unsigned line,
2667                 const char *section,
2668                 unsigned section_line,
2669                 const char *lvalue,
2670                 int ltype,
2671                 const char *rvalue,
2672                 void *data,
2673                 void *userdata) {
2674
2675         const char *p = rvalue;
2676         Unit *u = userdata;
2677         int r;
2678
2679         assert(filename);
2680         assert(lvalue);
2681         assert(rvalue);
2682         assert(data);
2683
2684         for (;;) {
2685                 _cleanup_free_ char *word = NULL, *resolved = NULL;
2686
2687                 r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
2688                 if (r == 0)
2689                         return 0;
2690                 if (r == -ENOMEM)
2691                         return log_oom();
2692                 if (r < 0) {
2693                         log_syntax(unit, LOG_WARNING, filename, line, r,
2694                                    "Invalid syntax, ignoring: %s", rvalue);
2695                         return 0;
2696                 }
2697
2698                 r = unit_full_printf(u, word, &resolved);
2699                 if (r < 0) {
2700                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", word);
2701                         continue;
2702                 }
2703
2704                 r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
2705                 if (r < 0)
2706                         continue;
2707
2708                 r = unit_require_mounts_for(u, resolved, UNIT_DEPENDENCY_FILE);
2709                 if (r < 0) {
2710                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to add required mount '%s', ignoring: %m", resolved);
2711                         continue;
2712                 }
2713         }
2714 }
2715
2716 int config_parse_documentation(const char *unit,
2717                                const char *filename,
2718                                unsigned line,
2719                                const char *section,
2720                                unsigned section_line,
2721                                const char *lvalue,
2722                                int ltype,
2723                                const char *rvalue,
2724                                void *data,
2725                                void *userdata) {
2726
2727         Unit *u = userdata;
2728         int r;
2729         char **a, **b;
2730
2731         assert(filename);
2732         assert(lvalue);
2733         assert(rvalue);
2734         assert(u);
2735
2736         if (isempty(rvalue)) {
2737                 /* Empty assignment resets the list */
2738                 u->documentation = strv_free(u->documentation);
2739                 return 0;
2740         }
2741
2742         r = config_parse_unit_strv_printf(unit, filename, line, section, section_line, lvalue, ltype,
2743                                           rvalue, data, userdata);
2744         if (r < 0)
2745                 return r;
2746
2747         for (a = b = u->documentation; a && *a; a++) {
2748
2749                 if (documentation_url_is_valid(*a))
2750                         *(b++) = *a;
2751                 else {
2752                         log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid URL, ignoring: %s", *a);
2753                         free(*a);
2754                 }
2755         }
2756         if (b)
2757                 *b = NULL;
2758
2759         return r;
2760 }
2761
2762 #if HAVE_SECCOMP
2763 int config_parse_syscall_filter(
2764                 const char *unit,
2765                 const char *filename,
2766                 unsigned line,
2767                 const char *section,
2768                 unsigned section_line,
2769                 const char *lvalue,
2770                 int ltype,
2771                 const char *rvalue,
2772                 void *data,
2773                 void *userdata) {
2774
2775         ExecContext *c = data;
2776         const Unit *u = userdata;
2777         bool invert = false;
2778         const char *p;
2779         int r;
2780
2781         assert(filename);
2782         assert(lvalue);
2783         assert(rvalue);
2784         assert(u);
2785
2786         if (isempty(rvalue)) {
2787                 /* Empty assignment resets the list */
2788                 c->syscall_filter = hashmap_free(c->syscall_filter);
2789                 c->syscall_whitelist = false;
2790                 return 0;
2791         }
2792
2793         if (rvalue[0] == '~') {
2794                 invert = true;
2795                 rvalue++;
2796         }
2797
2798         if (!c->syscall_filter) {
2799                 c->syscall_filter = hashmap_new(NULL);
2800                 if (!c->syscall_filter)
2801                         return log_oom();
2802
2803                 if (invert)
2804                         /* Allow everything but the ones listed */
2805                         c->syscall_whitelist = false;
2806                 else {
2807                         /* Allow nothing but the ones listed */
2808                         c->syscall_whitelist = true;
2809
2810                         /* Accept default syscalls if we are on a whitelist */
2811                         r = seccomp_parse_syscall_filter(
2812                                         "@default", -1, c->syscall_filter,
2813                                         SECCOMP_PARSE_PERMISSIVE|SECCOMP_PARSE_WHITELIST,
2814                                         unit,
2815                                         NULL, 0);
2816                         if (r < 0)
2817                                 return r;
2818                 }
2819         }
2820
2821         p = rvalue;
2822         for (;;) {
2823                 _cleanup_free_ char *word = NULL, *name = NULL;
2824                 int num;
2825
2826                 r = extract_first_word(&p, &word, NULL, 0);
2827                 if (r == 0)
2828                         return 0;
2829                 if (r == -ENOMEM)
2830                         return log_oom();
2831                 if (r < 0) {
2832                         log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
2833                         return 0;
2834                 }
2835
2836                 r = parse_syscall_and_errno(word, &name, &num);
2837                 if (r < 0) {
2838                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse syscall:errno, ignoring: %s", word);
2839                         continue;
2840                 }
2841
2842                 r = seccomp_parse_syscall_filter(
2843                                 name, num, c->syscall_filter,
2844                                 SECCOMP_PARSE_LOG|SECCOMP_PARSE_PERMISSIVE|
2845                                 (invert ? SECCOMP_PARSE_INVERT : 0)|
2846                                 (c->syscall_whitelist ? SECCOMP_PARSE_WHITELIST : 0),
2847                                 unit, filename, line);
2848                 if (r < 0)
2849                         return r;
2850         }
2851 }
2852
2853 int config_parse_syscall_archs(
2854                 const char *unit,
2855                 const char *filename,
2856                 unsigned line,
2857                 const char *section,
2858                 unsigned section_line,
2859                 const char *lvalue,
2860                 int ltype,
2861                 const char *rvalue,
2862                 void *data,
2863                 void *userdata) {
2864
2865         const char *p = rvalue;
2866         Set **archs = data;
2867         int r;
2868
2869         if (isempty(rvalue)) {
2870                 *archs = set_free(*archs);
2871                 return 0;
2872         }
2873
2874         r = set_ensure_allocated(archs, NULL);
2875         if (r < 0)
2876                 return log_oom();
2877
2878         for (;;) {
2879                 _cleanup_free_ char *word = NULL;
2880                 uint32_t a;
2881
2882                 r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
2883                 if (r == 0)
2884                         return 0;
2885                 if (r == -ENOMEM)
2886                         return log_oom();
2887                 if (r < 0) {
2888                         log_syntax(unit, LOG_WARNING, filename, line, r,
2889                                    "Invalid syntax, ignoring: %s", rvalue);
2890                         return 0;
2891                 }
2892
2893                 r = seccomp_arch_from_string(word, &a);
2894                 if (r < 0) {
2895                         log_syntax(unit, LOG_ERR, filename, line, r,
2896                                    "Failed to parse system call architecture \"%s\", ignoring: %m", word);
2897                         continue;
2898                 }
2899
2900                 r = set_put(*archs, UINT32_TO_PTR(a + 1));
2901                 if (r < 0)
2902                         return log_oom();
2903         }
2904 }
2905
2906 int config_parse_syscall_errno(
2907                 const char *unit,
2908                 const char *filename,
2909                 unsigned line,
2910                 const char *section,
2911                 unsigned section_line,
2912                 const char *lvalue,
2913                 int ltype,
2914                 const char *rvalue,
2915                 void *data,
2916                 void *userdata) {
2917
2918         ExecContext *c = data;
2919         int e;
2920
2921         assert(filename);
2922         assert(lvalue);
2923         assert(rvalue);
2924
2925         if (isempty(rvalue)) {
2926                 /* Empty assignment resets to KILL */
2927                 c->syscall_errno = 0;
2928                 return 0;
2929         }
2930
2931         e = parse_errno(rvalue);
2932         if (e <= 0) {
2933                 log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse error number, ignoring: %s", rvalue);
2934                 return 0;
2935         }
2936
2937         c->syscall_errno = e;
2938         return 0;
2939 }
2940
2941 int config_parse_address_families(
2942                 const char *unit,
2943                 const char *filename,
2944                 unsigned line,
2945                 const char *section,
2946                 unsigned section_line,
2947                 const char *lvalue,
2948                 int ltype,
2949                 const char *rvalue,
2950                 void *data,
2951                 void *userdata) {
2952
2953         ExecContext *c = data;
2954         bool invert = false;
2955         const char *p;
2956         int r;
2957
2958         assert(filename);
2959         assert(lvalue);
2960         assert(rvalue);
2961
2962         if (isempty(rvalue)) {
2963                 /* Empty assignment resets the list */
2964                 c->address_families = set_free(c->address_families);
2965                 c->address_families_whitelist = false;
2966                 return 0;
2967         }
2968
2969         if (rvalue[0] == '~') {
2970                 invert = true;
2971                 rvalue++;
2972         }
2973
2974         if (!c->address_families) {
2975                 c->address_families = set_new(NULL);
2976                 if (!c->address_families)
2977                         return log_oom();
2978
2979                 c->address_families_whitelist = !invert;
2980         }
2981
2982         for (p = rvalue;;) {
2983                 _cleanup_free_ char *word = NULL;
2984                 int af;
2985
2986                 r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
2987                 if (r == 0)
2988                         return 0;
2989                 if (r == -ENOMEM)
2990                         return log_oom();
2991                 if (r < 0) {
2992                         log_syntax(unit, LOG_WARNING, filename, line, r,
2993                                    "Invalid syntax, ignoring: %s", rvalue);
2994                         return 0;
2995                 }
2996
2997                 af = af_from_name(word);
2998                 if (af < 0) {
2999                         log_syntax(unit, LOG_ERR, filename, line, af,
3000                                    "Failed to parse address family, ignoring: %s", word);
3001                         continue;
3002                 }
3003
3004                 /* If we previously wanted to forbid an address family and now
3005                  * we want to allow it, then just remove it from the list.
3006                  */
3007                 if (!invert == c->address_families_whitelist)  {
3008                         r = set_put(c->address_families, INT_TO_PTR(af));
3009                         if (r < 0)
3010                                 return log_oom();
3011                 } else
3012                         set_remove(c->address_families, INT_TO_PTR(af));
3013         }
3014 }
3015
3016 int config_parse_restrict_namespaces(
3017                 const char *unit,
3018                 const char *filename,
3019                 unsigned line,
3020                 const char *section,
3021                 unsigned section_line,
3022                 const char *lvalue,
3023                 int ltype,
3024                 const char *rvalue,
3025                 void *data,
3026                 void *userdata) {
3027
3028         ExecContext *c = data;
3029         unsigned long flags;
3030         bool invert = false;
3031         int r;
3032
3033         if (isempty(rvalue)) {
3034                 /* Reset to the default. */
3035                 c->restrict_namespaces = NAMESPACE_FLAGS_INITIAL;
3036                 return 0;
3037         }
3038
3039         /* Boolean parameter ignores the previous settings */
3040         r = parse_boolean(rvalue);
3041         if (r > 0) {
3042                 c->restrict_namespaces = 0;
3043                 return 0;
3044         } else if (r == 0) {
3045                 c->restrict_namespaces = NAMESPACE_FLAGS_ALL;
3046                 return 0;
3047         }
3048
3049         if (rvalue[0] == '~') {
3050                 invert = true;
3051                 rvalue++;
3052         }
3053
3054         /* Not a boolean argument, in this case it's a list of namespace types. */
3055         r = namespace_flags_from_string(rvalue, &flags);
3056         if (r < 0) {
3057                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse namespace type string, ignoring: %s", rvalue);
3058                 return 0;
3059         }
3060
3061         if (c->restrict_namespaces == NAMESPACE_FLAGS_INITIAL)
3062                 /* Initial assignment. Just set the value. */
3063                 c->restrict_namespaces = invert ? (~flags) & NAMESPACE_FLAGS_ALL : flags;
3064         else
3065                 /* Merge the value with the previous one. */
3066                 SET_FLAG(c->restrict_namespaces, flags, !invert);
3067
3068         return 0;
3069 }
3070 #endif
3071
3072 int config_parse_unit_slice(
3073                 const char *unit,
3074                 const char *filename,
3075                 unsigned line,
3076                 const char *section,
3077                 unsigned section_line,
3078                 const char *lvalue,
3079                 int ltype,
3080                 const char *rvalue,
3081                 void *data,
3082                 void *userdata) {
3083
3084         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
3085         _cleanup_free_ char *k = NULL;
3086         Unit *u = userdata, *slice;
3087         int r;
3088
3089         assert(filename);
3090         assert(lvalue);
3091         assert(rvalue);
3092         assert(u);
3093
3094         r = unit_name_printf(u, rvalue, &k);
3095         if (r < 0) {
3096                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue);
3097                 return 0;
3098         }
3099
3100         r = manager_load_unit(u->manager, k, NULL, &error, &slice);
3101         if (r < 0) {
3102                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to load slice unit %s, ignoring: %s", k, bus_error_message(&error, r));
3103                 return 0;
3104         }
3105
3106         r = unit_set_slice(u, slice);
3107         if (r < 0) {
3108                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to assign slice %s to unit %s, ignoring: %m", slice->id, u->id);
3109                 return 0;
3110         }
3111
3112         return 0;
3113 }
3114
3115 int config_parse_cpu_quota(
3116                 const char *unit,
3117                 const char *filename,
3118                 unsigned line,
3119                 const char *section,
3120                 unsigned section_line,
3121                 const char *lvalue,
3122                 int ltype,
3123                 const char *rvalue,
3124                 void *data,
3125                 void *userdata) {
3126
3127         CGroupContext *c = data;
3128         int r;
3129
3130         assert(filename);
3131         assert(lvalue);
3132         assert(rvalue);
3133
3134         if (isempty(rvalue)) {
3135                 c->cpu_quota_per_sec_usec = USEC_INFINITY;
3136                 return 0;
3137         }
3138
3139         r = parse_permille_unbounded(rvalue);
3140         if (r <= 0) {
3141                 log_syntax(unit, LOG_ERR, filename, line, r, "Invalid CPU quota '%s', ignoring.", rvalue);
3142                 return 0;
3143         }
3144
3145         c->cpu_quota_per_sec_usec = ((usec_t) r * USEC_PER_SEC) / 1000U;
3146         return 0;
3147 }
3148
3149 int config_parse_allowed_cpus(
3150                 const char *unit,
3151                 const char *filename,
3152                 unsigned line,
3153                 const char *section,
3154                 unsigned section_line,
3155                 const char *lvalue,
3156                 int ltype,
3157                 const char *rvalue,
3158                 void *data,
3159                 void *userdata) {
3160
3161         CGroupContext *c = data;
3162
3163         (void) parse_cpu_set_extend(rvalue, &c->cpuset_cpus, true, unit, filename, line, lvalue);
3164
3165         return 0;
3166 }
3167
3168 int config_parse_allowed_mems(
3169                 const char *unit,
3170                 const char *filename,
3171                 unsigned line,
3172                 const char *section,
3173                 unsigned section_line,
3174                 const char *lvalue,
3175                 int ltype,
3176                 const char *rvalue,
3177                 void *data,
3178                 void *userdata) {
3179
3180         CGroupContext *c = data;
3181
3182         (void) parse_cpu_set_extend(rvalue, &c->cpuset_mems, true, unit, filename, line, lvalue);
3183
3184         return 0;
3185 }
3186
3187 int config_parse_memory_limit(
3188                 const char *unit,
3189                 const char *filename,
3190                 unsigned line,
3191                 const char *section,
3192                 unsigned section_line,
3193                 const char *lvalue,
3194                 int ltype,
3195                 const char *rvalue,
3196                 void *data,
3197                 void *userdata) {
3198
3199         CGroupContext *c = data;
3200         uint64_t bytes = CGROUP_LIMIT_MAX;
3201         int r;
3202
3203         if (!isempty(rvalue) && !streq(rvalue, "infinity")) {
3204
3205                 r = parse_permille(rvalue);
3206                 if (r < 0) {
3207                         r = parse_size(rvalue, 1024, &bytes);
3208                         if (r < 0) {
3209                                 log_syntax(unit, LOG_ERR, filename, line, r, "Invalid memory limit '%s', ignoring: %m", rvalue);
3210                                 return 0;
3211                         }
3212                 } else
3213                         bytes = physical_memory_scale(r, 1000U);
3214
3215                 if (bytes >= UINT64_MAX ||
3216                     (bytes <= 0 && !STR_IN_SET(lvalue, "MemorySwapMax", "MemoryLow", "MemoryMin", "DefaultMemoryLow", "DefaultMemoryMin"))) {
3217                         log_syntax(unit, LOG_ERR, filename, line, 0, "Memory limit '%s' out of range, ignoring.", rvalue);
3218                         return 0;
3219                 }
3220         }
3221
3222         if (streq(lvalue, "DefaultMemoryLow")) {
3223                 c->default_memory_low_set = true;
3224                 if (isempty(rvalue))
3225                         c->default_memory_low = CGROUP_LIMIT_MIN;
3226                 else
3227                         c->default_memory_low = bytes;
3228         } else if (streq(lvalue, "DefaultMemoryMin")) {
3229                 c->default_memory_min_set = true;
3230                 if (isempty(rvalue))
3231                         c->default_memory_min = CGROUP_LIMIT_MIN;
3232                 else
3233                         c->default_memory_min = bytes;
3234         } else if (streq(lvalue, "MemoryMin")) {
3235                 c->memory_min = bytes;
3236                 c->memory_min_set = true;
3237         } else if (streq(lvalue, "MemoryLow")) {
3238                 c->memory_low = bytes;
3239                 c->memory_low_set = true;
3240         } else if (streq(lvalue, "MemoryHigh"))
3241                 c->memory_high = bytes;
3242         else if (streq(lvalue, "MemoryMax"))
3243                 c->memory_max = bytes;
3244         else if (streq(lvalue, "MemorySwapMax"))
3245                 c->memory_swap_max = bytes;
3246         else if (streq(lvalue, "MemoryLimit"))
3247                 c->memory_limit = bytes;
3248         else
3249                 return -EINVAL;
3250
3251         return 0;
3252 }
3253
3254 int config_parse_tasks_max(
3255                 const char *unit,
3256                 const char *filename,
3257                 unsigned line,
3258                 const char *section,
3259                 unsigned section_line,
3260                 const char *lvalue,
3261                 int ltype,
3262                 const char *rvalue,
3263                 void *data,
3264                 void *userdata) {
3265
3266         const Unit *u = userdata;
3267         TasksMax *tasks_max = data;
3268         uint64_t v;
3269         int r;
3270
3271         if (isempty(rvalue)) {
3272                 *tasks_max = u ? u->manager->default_tasks_max : TASKS_MAX_UNSET;
3273                 return 0;
3274         }
3275
3276         if (streq(rvalue, "infinity")) {
3277                 *tasks_max = TASKS_MAX_UNSET;
3278                 return 0;
3279         }
3280
3281         r = parse_permille(rvalue);
3282         if (r >= 0)
3283                 *tasks_max = (TasksMax) { r, 1000U }; /* r‰ */
3284         else {
3285                 r = safe_atou64(rvalue, &v);
3286                 if (r < 0) {
3287                         log_syntax(unit, LOG_ERR, filename, line, r, "Invalid maximum tasks value '%s', ignoring: %m", rvalue);
3288                         return 0;
3289                 }
3290
3291                 if (v <= 0 || v >= UINT64_MAX) {
3292                         log_syntax(unit, LOG_ERR, filename, line, 0, "Maximum tasks value '%s' out of range, ignoring.", rvalue);
3293                         return 0;
3294                 }
3295
3296                 *tasks_max = (TasksMax) { v };
3297         }
3298
3299         return 0;
3300 }
3301
3302 int config_parse_delegate(
3303                 const char *unit,
3304                 const char *filename,
3305                 unsigned line,
3306                 const char *section,
3307                 unsigned section_line,
3308                 const char *lvalue,
3309                 int ltype,
3310                 const char *rvalue,
3311                 void *data,
3312                 void *userdata) {
3313
3314         CGroupContext *c = data;
3315         UnitType t;
3316         int r;
3317
3318         t = unit_name_to_type(unit);
3319         assert(t != _UNIT_TYPE_INVALID);
3320
3321         if (!unit_vtable[t]->can_delegate) {
3322                 log_syntax(unit, LOG_ERR, filename, line, 0, "Delegate= setting not supported for this unit type, ignoring.");
3323                 return 0;
3324         }
3325
3326         /* We either accept a boolean value, which may be used to turn on delegation for all controllers, or turn it
3327          * off for all. Or it takes a list of controller names, in which case we add the specified controllers to the
3328          * mask to delegate. */
3329
3330         if (isempty(rvalue)) {
3331                 /* An empty string resets controllers and set Delegate=yes. */
3332                 c->delegate = true;
3333                 c->delegate_controllers = 0;
3334                 return 0;
3335         }
3336
3337         r = parse_boolean(rvalue);
3338         if (r < 0) {
3339                 const char *p = rvalue;
3340                 CGroupMask mask = 0;
3341
3342                 for (;;) {
3343                         _cleanup_free_ char *word = NULL;
3344                         CGroupController cc;
3345
3346                         r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
3347                         if (r == 0)
3348                                 break;
3349                         if (r == -ENOMEM)
3350                                 return log_oom();
3351                         if (r < 0) {
3352                                 log_syntax(unit, LOG_ERR, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
3353                                 return 0;
3354                         }
3355
3356                         cc = cgroup_controller_from_string(word);
3357                         if (cc < 0) {
3358                                 log_syntax(unit, LOG_ERR, filename, line, r, "Invalid controller name '%s', ignoring", word);
3359                                 continue;
3360                         }
3361
3362                         mask |= CGROUP_CONTROLLER_TO_MASK(cc);
3363                 }
3364
3365                 c->delegate = true;
3366                 c->delegate_controllers |= mask;
3367
3368         } else if (r > 0) {
3369                 c->delegate = true;
3370                 c->delegate_controllers = _CGROUP_MASK_ALL;
3371         } else {
3372                 c->delegate = false;
3373                 c->delegate_controllers = 0;
3374         }
3375
3376         return 0;
3377 }
3378
3379 int config_parse_device_allow(
3380                 const char *unit,
3381                 const char *filename,
3382                 unsigned line,
3383                 const char *section,
3384                 unsigned section_line,
3385                 const char *lvalue,
3386                 int ltype,
3387                 const char *rvalue,
3388                 void *data,
3389                 void *userdata) {
3390
3391         _cleanup_free_ char *path = NULL, *resolved = NULL;
3392         CGroupContext *c = data;
3393         const char *p = rvalue;
3394         int r;
3395
3396         if (isempty(rvalue)) {
3397                 while (c->device_allow)
3398                         cgroup_context_free_device_allow(c, c->device_allow);
3399
3400                 return 0;
3401         }
3402
3403         r = extract_first_word(&p, &path, NULL, EXTRACT_UNQUOTE);
3404         if (r == -ENOMEM)
3405                 return log_oom();
3406         if (r < 0) {
3407                 log_syntax(unit, LOG_WARNING, filename, line, r,
3408                            "Invalid syntax, ignoring: %s", rvalue);
3409                 return 0;
3410         }
3411         if (r == 0) {
3412                 log_syntax(unit, LOG_WARNING, filename, line, 0,
3413                            "Failed to extract device path and rights from '%s', ignoring.", rvalue);
3414                 return 0;
3415         }
3416
3417         r = unit_full_printf(userdata, path, &resolved);
3418         if (r < 0) {
3419                 log_syntax(unit, LOG_WARNING, filename, line, r,
3420                            "Failed to resolve unit specifiers in '%s', ignoring: %m", path);
3421                 return 0;
3422         }
3423
3424         if (!STARTSWITH_SET(resolved, "block-", "char-")) {
3425
3426                 r = path_simplify_and_warn(resolved, 0, unit, filename, line, lvalue);
3427                 if (r < 0)
3428                         return 0;
3429
3430                 if (!valid_device_node_path(resolved)) {
3431                         log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid device node path '%s', ignoring.", resolved);
3432                         return 0;
3433                 }
3434         }
3435
3436         if (!isempty(p) && !in_charset(p, "rwm")) {
3437                 log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid device rights '%s', ignoring.", p);
3438                 return 0;
3439         }
3440
3441         return cgroup_add_device_allow(c, resolved, p);
3442 }
3443
3444 int config_parse_io_device_weight(
3445                 const char *unit,
3446                 const char *filename,
3447                 unsigned line,
3448                 const char *section,
3449                 unsigned section_line,
3450                 const char *lvalue,
3451                 int ltype,
3452                 const char *rvalue,
3453                 void *data,
3454                 void *userdata) {
3455
3456         _cleanup_free_ char *path = NULL, *resolved = NULL;
3457         CGroupIODeviceWeight *w;
3458         CGroupContext *c = data;
3459         const char *p = rvalue;
3460         uint64_t u;
3461         int r;
3462
3463         assert(filename);
3464         assert(lvalue);
3465         assert(rvalue);
3466
3467         if (isempty(rvalue)) {
3468                 while (c->io_device_weights)
3469                         cgroup_context_free_io_device_weight(c, c->io_device_weights);
3470
3471                 return 0;
3472         }
3473
3474         r = extract_first_word(&p, &path, NULL, EXTRACT_UNQUOTE);
3475         if (r == -ENOMEM)
3476                 return log_oom();
3477         if (r < 0) {
3478                 log_syntax(unit, LOG_WARNING, filename, line, r,
3479                            "Invalid syntax, ignoring: %s", rvalue);
3480                 return 0;
3481         }
3482         if (r == 0 || isempty(p)) {
3483                 log_syntax(unit, LOG_WARNING, filename, line, 0,
3484                            "Failed to extract device path and weight from '%s', ignoring.", rvalue);
3485                 return 0;
3486         }
3487
3488         r = unit_full_printf(userdata, path, &resolved);
3489         if (r < 0) {
3490                 log_syntax(unit, LOG_WARNING, filename, line, r,
3491                            "Failed to resolve unit specifiers in '%s', ignoring: %m", path);
3492                 return 0;
3493         }
3494
3495         r = path_simplify_and_warn(resolved, 0, unit, filename, line, lvalue);
3496         if (r < 0)
3497                 return 0;
3498
3499         r = cg_weight_parse(p, &u);
3500         if (r < 0) {
3501                 log_syntax(unit, LOG_ERR, filename, line, r, "IO weight '%s' invalid, ignoring: %m", p);
3502                 return 0;
3503         }
3504
3505         assert(u != CGROUP_WEIGHT_INVALID);
3506
3507         w = new0(CGroupIODeviceWeight, 1);
3508         if (!w)
3509                 return log_oom();
3510
3511         w->path = TAKE_PTR(resolved);
3512         w->weight = u;
3513
3514         LIST_PREPEND(device_weights, c->io_device_weights, w);
3515         return 0;
3516 }
3517
3518 int config_parse_io_device_latency(
3519                 const char *unit,
3520                 const char *filename,
3521                 unsigned line,
3522                 const char *section,
3523                 unsigned section_line,
3524                 const char *lvalue,
3525                 int ltype,
3526                 const char *rvalue,
3527                 void *data,
3528                 void *userdata) {
3529
3530         _cleanup_free_ char *path = NULL, *resolved = NULL;
3531         CGroupIODeviceLatency *l;
3532         CGroupContext *c = data;
3533         const char *p = rvalue;
3534         usec_t usec;
3535         int r;
3536
3537         assert(filename);
3538         assert(lvalue);
3539         assert(rvalue);
3540
3541         if (isempty(rvalue)) {
3542                 while (c->io_device_latencies)
3543                         cgroup_context_free_io_device_latency(c, c->io_device_latencies);
3544
3545                 return 0;
3546         }
3547
3548         r = extract_first_word(&p, &path, NULL, EXTRACT_UNQUOTE);
3549         if (r == -ENOMEM)
3550                 return log_oom();
3551         if (r < 0) {
3552                 log_syntax(unit, LOG_WARNING, filename, line, r,
3553                            "Invalid syntax, ignoring: %s", rvalue);
3554                 return 0;
3555         }
3556         if (r == 0 || isempty(p)) {
3557                 log_syntax(unit, LOG_WARNING, filename, line, 0,
3558                            "Failed to extract device path and latency from '%s', ignoring.", rvalue);
3559                 return 0;
3560         }
3561
3562         r = unit_full_printf(userdata, path, &resolved);
3563         if (r < 0) {
3564                 log_syntax(unit, LOG_WARNING, filename, line, r,
3565                            "Failed to resolve unit specifiers in '%s', ignoring: %m", path);
3566                 return 0;
3567         }
3568
3569         r = path_simplify_and_warn(resolved, 0, unit, filename, line, lvalue);
3570         if (r < 0)
3571                 return 0;
3572
3573         if (parse_sec(p, &usec) < 0) {
3574                 log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse timer value, ignoring: %s", p);
3575                 return 0;
3576         }
3577
3578         l = new0(CGroupIODeviceLatency, 1);
3579         if (!l)
3580                 return log_oom();
3581
3582         l->path = TAKE_PTR(resolved);
3583         l->target_usec = usec;
3584
3585         LIST_PREPEND(device_latencies, c->io_device_latencies, l);
3586         return 0;
3587 }
3588
3589 int config_parse_io_limit(
3590                 const char *unit,
3591                 const char *filename,
3592                 unsigned line,
3593                 const char *section,
3594                 unsigned section_line,
3595                 const char *lvalue,
3596                 int ltype,
3597                 const char *rvalue,
3598                 void *data,
3599                 void *userdata) {
3600
3601         _cleanup_free_ char *path = NULL, *resolved = NULL;
3602         CGroupIODeviceLimit *l = NULL, *t;
3603         CGroupContext *c = data;
3604         CGroupIOLimitType type;
3605         const char *p = rvalue;
3606         uint64_t num;
3607         int r;
3608
3609         assert(filename);
3610         assert(lvalue);
3611         assert(rvalue);
3612
3613         type = cgroup_io_limit_type_from_string(lvalue);
3614         assert(type >= 0);
3615
3616         if (isempty(rvalue)) {
3617                 LIST_FOREACH(device_limits, l, c->io_device_limits)
3618                         l->limits[type] = cgroup_io_limit_defaults[type];
3619                 return 0;
3620         }
3621
3622         r = extract_first_word(&p, &path, NULL, EXTRACT_UNQUOTE);
3623         if (r == -ENOMEM)
3624                 return log_oom();
3625         if (r < 0) {
3626                 log_syntax(unit, LOG_WARNING, filename, line, r,
3627                            "Invalid syntax, ignoring: %s", rvalue);
3628                 return 0;
3629         }
3630         if (r == 0 || isempty(p)) {
3631                 log_syntax(unit, LOG_WARNING, filename, line, 0,
3632                            "Failed to extract device node and bandwidth from '%s', ignoring.", rvalue);
3633                 return 0;
3634         }
3635
3636         r = unit_full_printf(userdata, path, &resolved);
3637         if (r < 0) {
3638                 log_syntax(unit, LOG_WARNING, filename, line, r,
3639                            "Failed to resolve unit specifiers in '%s', ignoring: %m", path);
3640                 return 0;
3641         }
3642
3643         r = path_simplify_and_warn(resolved, 0, unit, filename, line, lvalue);
3644         if (r < 0)
3645                 return 0;
3646
3647         if (streq("infinity", p))
3648                 num = CGROUP_LIMIT_MAX;
3649         else {
3650                 r = parse_size(p, 1000, &num);
3651                 if (r < 0 || num <= 0) {
3652                         log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid IO limit '%s', ignoring.", p);
3653                         return 0;
3654                 }
3655         }
3656
3657         LIST_FOREACH(device_limits, t, c->io_device_limits) {
3658                 if (path_equal(resolved, t->path)) {
3659                         l = t;
3660                         break;
3661                 }
3662         }
3663
3664         if (!l) {
3665                 CGroupIOLimitType ttype;
3666
3667                 l = new0(CGroupIODeviceLimit, 1);
3668                 if (!l)
3669                         return log_oom();
3670
3671                 l->path = TAKE_PTR(resolved);
3672                 for (ttype = 0; ttype < _CGROUP_IO_LIMIT_TYPE_MAX; ttype++)
3673                         l->limits[ttype] = cgroup_io_limit_defaults[ttype];
3674
3675                 LIST_PREPEND(device_limits, c->io_device_limits, l);
3676         }
3677
3678         l->limits[type] = num;
3679
3680         return 0;
3681 }
3682
3683 int config_parse_blockio_device_weight(
3684                 const char *unit,
3685                 const char *filename,
3686                 unsigned line,
3687                 const char *section,
3688                 unsigned section_line,
3689                 const char *lvalue,
3690                 int ltype,
3691                 const char *rvalue,
3692                 void *data,
3693                 void *userdata) {
3694
3695         _cleanup_free_ char *path = NULL, *resolved = NULL;
3696         CGroupBlockIODeviceWeight *w;
3697         CGroupContext *c = data;
3698         const char *p = rvalue;
3699         uint64_t u;
3700         int r;
3701
3702         assert(filename);
3703         assert(lvalue);
3704         assert(rvalue);
3705
3706         if (isempty(rvalue)) {
3707                 while (c->blockio_device_weights)
3708                         cgroup_context_free_blockio_device_weight(c, c->blockio_device_weights);
3709
3710                 return 0;
3711         }
3712
3713         r = extract_first_word(&p, &path, NULL, EXTRACT_UNQUOTE);
3714         if (r == -ENOMEM)
3715                 return log_oom();
3716         if (r < 0) {
3717                 log_syntax(unit, LOG_WARNING, filename, line, r,
3718                            "Invalid syntax, ignoring: %s", rvalue);
3719                 return 0;
3720         }
3721         if (r == 0 || isempty(p)) {
3722                 log_syntax(unit, LOG_WARNING, filename, line, 0,
3723                            "Failed to extract device node and weight from '%s', ignoring.", rvalue);
3724                 return 0;
3725         }
3726
3727         r = unit_full_printf(userdata, path, &resolved);
3728         if (r < 0) {
3729                 log_syntax(unit, LOG_WARNING, filename, line, r,
3730                            "Failed to resolve unit specifiers in '%s', ignoring: %m", path);
3731                 return 0;
3732         }
3733
3734         r = path_simplify_and_warn(resolved, 0, unit, filename, line, lvalue);
3735         if (r < 0)
3736                 return 0;
3737
3738         r = cg_blkio_weight_parse(p, &u);
3739         if (r < 0) {
3740                 log_syntax(unit, LOG_ERR, filename, line, r, "Invalid block IO weight '%s', ignoring: %m", p);
3741                 return 0;
3742         }
3743
3744         assert(u != CGROUP_BLKIO_WEIGHT_INVALID);
3745
3746         w = new0(CGroupBlockIODeviceWeight, 1);
3747         if (!w)
3748                 return log_oom();
3749
3750         w->path = TAKE_PTR(resolved);
3751         w->weight = u;
3752
3753         LIST_PREPEND(device_weights, c->blockio_device_weights, w);
3754         return 0;
3755 }
3756
3757 int config_parse_blockio_bandwidth(
3758                 const char *unit,
3759                 const char *filename,
3760                 unsigned line,
3761                 const char *section,
3762                 unsigned section_line,
3763                 const char *lvalue,
3764                 int ltype,
3765                 const char *rvalue,
3766                 void *data,
3767                 void *userdata) {
3768
3769         _cleanup_free_ char *path = NULL, *resolved = NULL;
3770         CGroupBlockIODeviceBandwidth *b = NULL, *t;
3771         CGroupContext *c = data;
3772         const char *p = rvalue;
3773         uint64_t bytes;
3774         bool read;
3775         int r;
3776
3777         assert(filename);
3778         assert(lvalue);
3779         assert(rvalue);
3780
3781         read = streq("BlockIOReadBandwidth", lvalue);
3782
3783         if (isempty(rvalue)) {
3784                 LIST_FOREACH(device_bandwidths, b, c->blockio_device_bandwidths) {
3785                         b->rbps = CGROUP_LIMIT_MAX;
3786                         b->wbps = CGROUP_LIMIT_MAX;
3787                 }
3788                 return 0;
3789         }
3790
3791         r = extract_first_word(&p, &path, NULL, EXTRACT_UNQUOTE);
3792         if (r == -ENOMEM)
3793                 return log_oom();
3794         if (r < 0) {
3795                 log_syntax(unit, LOG_WARNING, filename, line, r,
3796                            "Invalid syntax, ignoring: %s", rvalue);
3797                 return 0;
3798         }
3799         if (r == 0 || isempty(p)) {
3800                 log_syntax(unit, LOG_WARNING, filename, line, 0,
3801                            "Failed to extract device node and bandwidth from '%s', ignoring.", rvalue);
3802                 return 0;
3803         }
3804
3805         r = unit_full_printf(userdata, path, &resolved);
3806         if (r < 0) {
3807                 log_syntax(unit, LOG_WARNING, filename, line, r,
3808                            "Failed to resolve unit specifiers in '%s', ignoring: %m", path);
3809                 return 0;
3810         }
3811
3812         r = path_simplify_and_warn(resolved, 0, unit, filename, line, lvalue);
3813         if (r < 0)
3814                 return 0;
3815
3816         r = parse_size(p, 1000, &bytes);
3817         if (r < 0 || bytes <= 0) {
3818                 log_syntax(unit, LOG_ERR, filename, line, r, "Invalid Block IO Bandwidth '%s', ignoring.", p);
3819                 return 0;
3820         }
3821
3822         LIST_FOREACH(device_bandwidths, t, c->blockio_device_bandwidths) {
3823                 if (path_equal(resolved, t->path)) {
3824                         b = t;
3825                         break;
3826                 }
3827         }
3828
3829         if (!t) {
3830                 b = new0(CGroupBlockIODeviceBandwidth, 1);
3831                 if (!b)
3832                         return log_oom();
3833
3834                 b->path = TAKE_PTR(resolved);
3835                 b->rbps = CGROUP_LIMIT_MAX;
3836                 b->wbps = CGROUP_LIMIT_MAX;
3837
3838                 LIST_PREPEND(device_bandwidths, c->blockio_device_bandwidths, b);
3839         }
3840
3841         if (read)
3842                 b->rbps = bytes;
3843         else
3844                 b->wbps = bytes;
3845
3846         return 0;
3847 }
3848
3849 int config_parse_job_mode_isolate(
3850                 const char *unit,
3851                 const char *filename,
3852                 unsigned line,
3853                 const char *section,
3854                 unsigned section_line,
3855                 const char *lvalue,
3856                 int ltype,
3857                 const char *rvalue,
3858                 void *data,
3859                 void *userdata) {
3860
3861         JobMode *m = data;
3862         int r;
3863
3864         assert(filename);
3865         assert(lvalue);
3866         assert(rvalue);
3867
3868         r = parse_boolean(rvalue);
3869         if (r < 0) {
3870                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse boolean, ignoring: %s", rvalue);
3871                 return 0;
3872         }
3873
3874         log_notice("%s is deprecated. Please use OnFailureJobMode= instead", lvalue);
3875
3876         *m = r ? JOB_ISOLATE : JOB_REPLACE;
3877         return 0;
3878 }
3879
3880 int config_parse_exec_directories(
3881                 const char *unit,
3882                 const char *filename,
3883                 unsigned line,
3884                 const char *section,
3885                 unsigned section_line,
3886                 const char *lvalue,
3887                 int ltype,
3888                 const char *rvalue,
3889                 void *data,
3890                 void *userdata) {
3891
3892         char***rt = data;
3893         const Unit *u = userdata;
3894         const char *p;
3895         int r;
3896
3897         assert(filename);
3898         assert(lvalue);
3899         assert(rvalue);
3900         assert(data);
3901
3902         if (isempty(rvalue)) {
3903                 /* Empty assignment resets the list */
3904                 *rt = strv_free(*rt);
3905                 return 0;
3906         }
3907
3908         for (p = rvalue;;) {
3909                 _cleanup_free_ char *word = NULL, *k = NULL;
3910
3911                 r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
3912                 if (r == -ENOMEM)
3913                         return log_oom();
3914                 if (r < 0) {
3915                         log_syntax(unit, LOG_WARNING, filename, line, r,
3916                                    "Invalid syntax, ignoring: %s", rvalue);
3917                         return 0;
3918                 }
3919                 if (r == 0)
3920                         return 0;
3921
3922                 r = unit_full_printf(u, word, &k);
3923                 if (r < 0) {
3924                         log_syntax(unit, LOG_ERR, filename, line, r,
3925                                    "Failed to resolve unit specifiers in \"%s\", ignoring: %m", word);
3926                         continue;
3927                 }
3928
3929                 r = path_simplify_and_warn(k, PATH_CHECK_RELATIVE, unit, filename, line, lvalue);
3930                 if (r < 0)
3931                         continue;
3932
3933                 if (path_startswith(k, "private")) {
3934                         log_syntax(unit, LOG_ERR, filename, line, 0,
3935                                    "%s= path can't be 'private', ignoring assignment: %s", lvalue, word);
3936                         continue;
3937                 }
3938
3939                 r = strv_push(rt, k);
3940                 if (r < 0)
3941                         return log_oom();
3942                 k = NULL;
3943         }
3944 }
3945
3946 int config_parse_set_status(
3947                 const char *unit,
3948                 const char *filename,
3949                 unsigned line,
3950                 const char *section,
3951                 unsigned section_line,
3952                 const char *lvalue,
3953                 int ltype,
3954                 const char *rvalue,
3955                 void *data,
3956                 void *userdata) {
3957
3958         size_t l;
3959         const char *word, *state;
3960         int r;
3961         ExitStatusSet *status_set = data;
3962
3963         assert(filename);
3964         assert(lvalue);
3965         assert(rvalue);
3966         assert(data);
3967
3968         /* Empty assignment resets the list */
3969         if (isempty(rvalue)) {
3970                 exit_status_set_free(status_set);
3971                 return 0;
3972         }
3973
3974         FOREACH_WORD(word, l, rvalue, state) {
3975                 _cleanup_free_ char *temp;
3976                 Bitmap *bitmap;
3977
3978                 temp = strndup(word, l);
3979                 if (!temp)
3980                         return log_oom();
3981
3982                 /* We need to call exit_status_from_string() first, because we want
3983                  * to parse numbers as exit statuses, not signals. */
3984
3985                 r = exit_status_from_string(temp);
3986                 if (r >= 0) {
3987                         assert(r >= 0 && r < 256);
3988                         bitmap = &status_set->status;
3989                 } else {
3990                         r = signal_from_string(temp);
3991
3992                         if (r <= 0) {
3993                                 log_syntax(unit, LOG_ERR, filename, line, 0,
3994                                            "Failed to parse value, ignoring: %s", word);
3995                                 continue;
3996                         }
3997                         bitmap = &status_set->signal;
3998                 }
3999
4000                 r = bitmap_set(bitmap, r);
4001                 if (r < 0)
4002                         return log_error_errno(r, "Failed to set signal or status %s: %m", word);
4003         }
4004         if (!isempty(state))
4005                 log_syntax(unit, LOG_ERR, filename, line, 0, "Trailing garbage, ignoring.");
4006
4007         return 0;
4008 }
4009
4010 int config_parse_namespace_path_strv(
4011                 const char *unit,
4012                 const char *filename,
4013                 unsigned line,
4014                 const char *section,
4015                 unsigned section_line,
4016                 const char *lvalue,
4017                 int ltype,
4018                 const char *rvalue,
4019                 void *data,
4020                 void *userdata) {
4021
4022         const Unit *u = userdata;
4023         char*** sv = data;
4024         const char *p = rvalue;
4025         int r;
4026
4027         assert(filename);
4028         assert(lvalue);
4029         assert(rvalue);
4030         assert(data);
4031
4032         if (isempty(rvalue)) {
4033                 /* Empty assignment resets the list */
4034                 *sv = strv_free(*sv);
4035                 return 0;
4036         }
4037
4038         for (;;) {
4039                 _cleanup_free_ char *word = NULL, *resolved = NULL, *joined = NULL;
4040                 const char *w;
4041                 bool ignore_enoent = false, shall_prefix = false;
4042
4043                 r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
4044                 if (r == 0)
4045                         break;
4046                 if (r == -ENOMEM)
4047                         return log_oom();
4048                 if (r < 0) {
4049                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract first word, ignoring: %s", rvalue);
4050                         return 0;
4051                 }
4052
4053                 w = word;
4054                 if (startswith(w, "-")) {
4055                         ignore_enoent = true;
4056                         w++;
4057                 }
4058                 if (startswith(w, "+")) {
4059                         shall_prefix = true;
4060                         w++;
4061                 }
4062
4063                 r = unit_full_printf(u, w, &resolved);
4064                 if (r < 0) {
4065                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s: %m", w);
4066                         continue;
4067                 }
4068
4069                 r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
4070                 if (r < 0)
4071                         continue;
4072
4073                 joined = strjoin(ignore_enoent ? "-" : "",
4074                                  shall_prefix ? "+" : "",
4075                                  resolved);
4076
4077                 r = strv_push(sv, joined);
4078                 if (r < 0)
4079                         return log_oom();
4080
4081                 joined = NULL;
4082         }
4083
4084         return 0;
4085 }
4086
4087 int config_parse_temporary_filesystems(
4088                 const char *unit,
4089                 const char *filename,
4090                 unsigned line,
4091                 const char *section,
4092                 unsigned section_line,
4093                 const char *lvalue,
4094                 int ltype,
4095                 const char *rvalue,
4096                 void *data,
4097                 void *userdata) {
4098
4099         const Unit *u = userdata;
4100         ExecContext *c = data;
4101         const char *p = rvalue;
4102         int r;
4103
4104         assert(filename);
4105         assert(lvalue);
4106         assert(rvalue);
4107         assert(data);
4108
4109         if (isempty(rvalue)) {
4110                 /* Empty assignment resets the list */
4111                 temporary_filesystem_free_many(c->temporary_filesystems, c->n_temporary_filesystems);
4112                 c->temporary_filesystems = NULL;
4113                 c->n_temporary_filesystems = 0;
4114                 return 0;
4115         }
4116
4117         for (;;) {
4118                 _cleanup_free_ char *word = NULL, *path = NULL, *resolved = NULL;
4119                 const char *w;
4120
4121                 r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
4122                 if (r == 0)
4123                         return 0;
4124                 if (r == -ENOMEM)
4125                         return log_oom();
4126                 if (r < 0) {
4127                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract first word, ignoring: %s", rvalue);
4128                         return 0;
4129                 }
4130
4131                 w = word;
4132                 r = extract_first_word(&w, &path, ":", EXTRACT_DONT_COALESCE_SEPARATORS);
4133                 if (r == -ENOMEM)
4134                         return log_oom();
4135                 if (r < 0) {
4136                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract first word, ignoring: %s", word);
4137                         continue;
4138                 }
4139                 if (r == 0) {
4140                         log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid syntax, ignoring: %s", word);
4141                         continue;
4142                 }
4143
4144                 r = unit_full_printf(u, path, &resolved);
4145                 if (r < 0) {
4146                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", path);
4147                         continue;
4148                 }
4149
4150                 r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
4151                 if (r < 0)
4152                         continue;
4153
4154                 r = temporary_filesystem_add(&c->temporary_filesystems, &c->n_temporary_filesystems, resolved, w);
4155                 if (r < 0)
4156                         return log_oom();
4157         }
4158 }
4159
4160 int config_parse_bind_paths(
4161                 const char *unit,
4162                 const char *filename,
4163                 unsigned line,
4164                 const char *section,
4165                 unsigned section_line,
4166                 const char *lvalue,
4167                 int ltype,
4168                 const char *rvalue,
4169                 void *data,
4170                 void *userdata) {
4171
4172         ExecContext *c = data;
4173         const Unit *u = userdata;
4174         const char *p;
4175         int r;
4176
4177         assert(filename);
4178         assert(lvalue);
4179         assert(rvalue);
4180         assert(data);
4181
4182         if (isempty(rvalue)) {
4183                 /* Empty assignment resets the list */
4184                 bind_mount_free_many(c->bind_mounts, c->n_bind_mounts);
4185                 c->bind_mounts = NULL;
4186                 c->n_bind_mounts = 0;
4187                 return 0;
4188         }
4189
4190         p = rvalue;
4191         for (;;) {
4192                 _cleanup_free_ char *source = NULL, *destination = NULL;
4193                 _cleanup_free_ char *sresolved = NULL, *dresolved = NULL;
4194                 char *s = NULL, *d = NULL;
4195                 bool rbind = true, ignore_enoent = false;
4196
4197                 r = extract_first_word(&p, &source, ":" WHITESPACE, EXTRACT_UNQUOTE|EXTRACT_DONT_COALESCE_SEPARATORS);
4198                 if (r == 0)
4199                         break;
4200                 if (r == -ENOMEM)
4201                         return log_oom();
4202                 if (r < 0) {
4203                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse %s, ignoring: %s", lvalue, rvalue);
4204                         return 0;
4205                 }
4206
4207                 r = unit_full_printf(u, source, &sresolved);
4208                 if (r < 0) {
4209                         log_syntax(unit, LOG_ERR, filename, line, r,
4210                                    "Failed to resolved unit specifiers in \"%s\", ignoring: %m", source);
4211                         continue;
4212                 }
4213
4214                 s = sresolved;
4215                 if (s[0] == '-') {
4216                         ignore_enoent = true;
4217                         s++;
4218                 }
4219
4220                 r = path_simplify_and_warn(s, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
4221                 if (r < 0)
4222                         continue;
4223
4224                 /* Optionally, the destination is specified. */
4225                 if (p && p[-1] == ':') {
4226                         r = extract_first_word(&p, &destination, ":" WHITESPACE, EXTRACT_UNQUOTE|EXTRACT_DONT_COALESCE_SEPARATORS);
4227                         if (r == -ENOMEM)
4228                                 return log_oom();
4229                         if (r < 0) {
4230                                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse %s, ignoring: %s", lvalue, rvalue);
4231                                 return 0;
4232                         }
4233                         if (r == 0) {
4234                                 log_syntax(unit, LOG_ERR, filename, line, 0, "Missing argument after ':', ignoring: %s", s);
4235                                 continue;
4236                         }
4237
4238                         r = unit_full_printf(u, destination, &dresolved);
4239                         if (r < 0) {
4240                                 log_syntax(unit, LOG_ERR, filename, line, r,
4241                                            "Failed to resolved specifiers in \"%s\", ignoring: %m", destination);
4242                                 continue;
4243                         }
4244
4245                         r = path_simplify_and_warn(dresolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
4246                         if (r < 0)
4247                                 continue;
4248
4249                         d = dresolved;
4250
4251                         /* Optionally, there's also a short option string specified */
4252                         if (p && p[-1] == ':') {
4253                                 _cleanup_free_ char *options = NULL;
4254
4255                                 r = extract_first_word(&p, &options, NULL, EXTRACT_UNQUOTE);
4256                                 if (r == -ENOMEM)
4257                                         return log_oom();
4258                                 if (r < 0) {
4259                                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse %s: %s", lvalue, rvalue);
4260                                         return 0;
4261                                 }
4262
4263                                 if (isempty(options) || streq(options, "rbind"))
4264                                         rbind = true;
4265                                 else if (streq(options, "norbind"))
4266                                         rbind = false;
4267                                 else {
4268                                         log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid option string, ignoring setting: %s", options);
4269                                         continue;
4270                                 }
4271                         }
4272                 } else
4273                         d = s;
4274
4275                 r = bind_mount_add(&c->bind_mounts, &c->n_bind_mounts,
4276                                    &(BindMount) {
4277                                            .source = s,
4278                                            .destination = d,
4279                                            .read_only = !!strstr(lvalue, "ReadOnly"),
4280                                            .recursive = rbind,
4281                                            .ignore_enoent = ignore_enoent,
4282                                    });
4283                 if (r < 0)
4284                         return log_oom();
4285         }
4286
4287         return 0;
4288 }
4289
4290 int config_parse_job_timeout_sec(
4291                 const char* unit,
4292                 const char *filename,
4293                 unsigned line,
4294                 const char *section,
4295                 unsigned section_line,
4296                 const char *lvalue,
4297                 int ltype,
4298                 const char *rvalue,
4299                 void *data,
4300                 void *userdata) {
4301
4302         Unit *u = data;
4303         usec_t usec;
4304         int r;
4305
4306         assert(filename);
4307         assert(lvalue);
4308         assert(rvalue);
4309         assert(u);
4310
4311         r = parse_sec_fix_0(rvalue, &usec);
4312         if (r < 0) {
4313                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse JobTimeoutSec= parameter, ignoring: %s", rvalue);
4314                 return 0;
4315         }
4316
4317         /* If the user explicitly changed JobTimeoutSec= also change JobRunningTimeoutSec=, for compatibility with old
4318          * versions. If JobRunningTimeoutSec= was explicitly set, avoid this however as whatever the user picked should
4319          * count. */
4320
4321         if (!u->job_running_timeout_set)
4322                 u->job_running_timeout = usec;
4323
4324         u->job_timeout = usec;
4325
4326         return 0;
4327 }
4328
4329 int config_parse_job_running_timeout_sec(
4330                 const char* unit,
4331                 const char *filename,
4332                 unsigned line,
4333                 const char *section,
4334                 unsigned section_line,
4335                 const char *lvalue,
4336                 int ltype,
4337                 const char *rvalue,
4338                 void *data,
4339                 void *userdata) {
4340
4341         Unit *u = data;
4342         usec_t usec;
4343         int r;
4344
4345         assert(filename);
4346         assert(lvalue);
4347         assert(rvalue);
4348         assert(u);
4349
4350         r = parse_sec_fix_0(rvalue, &usec);
4351         if (r < 0) {
4352                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse JobRunningTimeoutSec= parameter, ignoring: %s", rvalue);
4353                 return 0;
4354         }
4355
4356         u->job_running_timeout = usec;
4357         u->job_running_timeout_set = true;
4358
4359         return 0;
4360 }
4361
4362 int config_parse_emergency_action(
4363                 const char* unit,
4364                 const char *filename,
4365                 unsigned line,
4366                 const char *section,
4367                 unsigned section_line,
4368                 const char *lvalue,
4369                 int ltype,
4370                 const char *rvalue,
4371                 void *data,
4372                 void *userdata) {
4373
4374         Manager *m = NULL;
4375         EmergencyAction *x = data;
4376         int r;
4377
4378         assert(filename);
4379         assert(lvalue);
4380         assert(rvalue);
4381         assert(data);
4382
4383         if (unit)
4384                 m = ((Unit*) userdata)->manager;
4385         else
4386                 m = data;
4387
4388         r = parse_emergency_action(rvalue, MANAGER_IS_SYSTEM(m), x);
4389         if (r < 0) {
4390                 if (r == -EOPNOTSUPP && MANAGER_IS_USER(m)) {
4391                         /* Compat mode: remove for systemd 241. */
4392
4393                         log_syntax(unit, LOG_INFO, filename, line, r,
4394                                    "%s= in user mode specified as \"%s\", using \"exit-force\" instead.",
4395                                    lvalue, rvalue);
4396                         *x = EMERGENCY_ACTION_EXIT_FORCE;
4397                         return 0;
4398                 }
4399
4400                 if (r == -EOPNOTSUPP)
4401                         log_syntax(unit, LOG_ERR, filename, line, r,
4402                                    "%s= specified as %s mode action, ignoring: %s",
4403                                    lvalue, MANAGER_IS_SYSTEM(m) ? "user" : "system", rvalue);
4404                 else
4405                         log_syntax(unit, LOG_ERR, filename, line, r,
4406                                    "Failed to parse %s=, ignoring: %s", lvalue, rvalue);
4407                 return 0;
4408         }
4409
4410         return 0;
4411 }
4412
4413 int config_parse_pid_file(
4414                 const char *unit,
4415                 const char *filename,
4416                 unsigned line,
4417                 const char *section,
4418                 unsigned section_line,
4419                 const char *lvalue,
4420                 int ltype,
4421                 const char *rvalue,
4422                 void *data,
4423                 void *userdata) {
4424
4425         _cleanup_free_ char *k = NULL, *n = NULL;
4426         const Unit *u = userdata;
4427         char **s = data;
4428         int r;
4429
4430         assert(filename);
4431         assert(lvalue);
4432         assert(rvalue);
4433         assert(u);
4434
4435         if (isempty(rvalue)) {
4436                 /* An empty assignment removes already set value. */
4437                 *s = mfree(*s);
4438                 return 0;
4439         }
4440
4441         r = unit_full_printf(u, rvalue, &k);
4442         if (r < 0) {
4443                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
4444                 return 0;
4445         }
4446
4447         /* If this is a relative path make it absolute by prefixing the /run */
4448         n = path_make_absolute(k, u->manager->prefix[EXEC_DIRECTORY_RUNTIME]);
4449         if (!n)
4450                 return log_oom();
4451
4452         /* Check that the result is a sensible path */
4453         r = path_simplify_and_warn(n, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
4454         if (r < 0)
4455                 return r;
4456
4457         r = patch_var_run(unit, filename, line, lvalue, &n);
4458         if (r < 0)
4459                 return r;
4460
4461         free_and_replace(*s, n);
4462         return 0;
4463 }
4464
4465 int config_parse_exit_status(
4466                 const char *unit,
4467                 const char *filename,
4468                 unsigned line,
4469                 const char *section,
4470                 unsigned section_line,
4471                 const char *lvalue,
4472                 int ltype,
4473                 const char *rvalue,
4474                 void *data,
4475                 void *userdata) {
4476
4477         int *exit_status = data, r;
4478         uint8_t u;
4479
4480         assert(filename);
4481         assert(lvalue);
4482         assert(rvalue);
4483         assert(exit_status);
4484
4485         if (isempty(rvalue)) {
4486                 *exit_status = -1;
4487                 return 0;
4488         }
4489
4490         r = safe_atou8(rvalue, &u);
4491         if (r < 0) {
4492                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse exit status '%s', ignoring: %m", rvalue);
4493                 return 0;
4494         }
4495
4496         *exit_status = u;
4497         return 0;
4498 }
4499
4500 int config_parse_disable_controllers(
4501                 const char *unit,
4502                 const char *filename,
4503                 unsigned line,
4504                 const char *section,
4505                 unsigned section_line,
4506                 const char *lvalue,
4507                 int ltype,
4508                 const char *rvalue,
4509                 void *data,
4510                 void *userdata) {
4511
4512         int r;
4513         CGroupContext *c = data;
4514         CGroupMask disabled_mask;
4515
4516         /* 1. If empty, make all controllers eligible for use again.
4517          * 2. If non-empty, merge all listed controllers, space separated. */
4518
4519         if (isempty(rvalue)) {
4520                 c->disable_controllers = 0;
4521                 return 0;
4522         }
4523
4524         r = cg_mask_from_string(rvalue, &disabled_mask);
4525         if (r < 0 || disabled_mask <= 0) {
4526                 log_syntax(unit, LOG_ERR, filename, line, r, "Invalid cgroup string: %s, ignoring", rvalue);
4527                 return 0;
4528         }
4529
4530         c->disable_controllers |= disabled_mask;
4531
4532         return 0;
4533 }
4534
4535 int config_parse_ip_filter_bpf_progs(
4536                 const char *unit,
4537                 const char *filename,
4538                 unsigned line,
4539                 const char *section,
4540                 unsigned section_line,
4541                 const char *lvalue,
4542                 int ltype,
4543                 const char *rvalue,
4544                 void *data,
4545                 void *userdata) {
4546
4547         _cleanup_free_ char *resolved = NULL;
4548         const Unit *u = userdata;
4549         char ***paths = data;
4550         int r;
4551
4552         assert(filename);
4553         assert(lvalue);
4554         assert(rvalue);
4555         assert(paths);
4556
4557         if (isempty(rvalue)) {
4558                 *paths = strv_free(*paths);
4559                 return 0;
4560         }
4561
4562         r = unit_full_printf(u, rvalue, &resolved);
4563         if (r < 0) {
4564                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
4565                 return 0;
4566         }
4567
4568         r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
4569         if (r < 0)
4570                 return 0;
4571
4572         if (strv_contains(*paths, resolved))
4573                 return 0;
4574
4575         r = strv_extend(paths, resolved);
4576         if (r < 0)
4577                 return log_oom();
4578
4579         r = bpf_firewall_supported();
4580         if (r < 0)
4581                 return r;
4582         if (r != BPF_FIREWALL_SUPPORTED_WITH_MULTI) {
4583                 static bool warned = false;
4584
4585                 log_full(warned ? LOG_DEBUG : LOG_WARNING,
4586                          "File %s:%u configures an IP firewall with BPF programs (%s=%s), but the local system does not support BPF/cgroup based firewalling with multiple filters.\n"
4587                          "Starting this unit will fail! (This warning is only shown for the first loaded unit using IP firewalling.)", filename, line, lvalue, rvalue);
4588
4589                 warned = true;
4590         }
4591
4592         return 0;
4593 }
4594
4595 static int merge_by_names(Unit **u, Set *names, const char *id) {
4596         char *k;
4597         int r;
4598
4599         assert(u);
4600         assert(*u);
4601
4602         /* Let's try to add in all names that are aliases of this unit */
4603         while ((k = set_steal_first(names))) {
4604                 _cleanup_free_ _unused_ char *free_k = k;
4605
4606                 /* First try to merge in the other name into our unit */
4607                 r = unit_merge_by_name(*u, k);
4608                 if (r < 0) {
4609                         Unit *other;
4610
4611                         /* Hmm, we couldn't merge the other unit into ours? Then let's try it the other way
4612                          * round. */
4613
4614                         other = manager_get_unit((*u)->manager, k);
4615                         if (!other)
4616                                 return r; /* return previous failure */
4617
4618                         r = unit_merge(other, *u);
4619                         if (r < 0)
4620                                 return r;
4621
4622                         *u = other;
4623                         return merge_by_names(u, names, NULL);
4624                 }
4625
4626                 if (streq_ptr(id, k))
4627                         unit_choose_id(*u, id);
4628         }
4629
4630         return 0;
4631 }
4632
4633 int unit_load_fragment(Unit *u) {
4634         const char *fragment;
4635         _cleanup_set_free_free_ Set *names = NULL;
4636         struct stat st;
4637         int r;
4638
4639         assert(u);
4640         assert(u->load_state == UNIT_STUB);
4641         assert(u->id);
4642
4643         if (u->transient) {
4644                 u->load_state = UNIT_LOADED;
4645                 return 0;
4646         }
4647
4648         /* Possibly rebuild the fragment map to catch new units */
4649         r = unit_file_build_name_map(&u->manager->lookup_paths,
4650                                      &u->manager->unit_cache_mtime,
4651                                      &u->manager->unit_id_map,
4652                                      &u->manager->unit_name_map,
4653                                      &u->manager->unit_path_cache);
4654         if (r < 0)
4655                 log_error_errno(r, "Failed to rebuild name map: %m");
4656
4657         r = unit_file_find_fragment(u->manager->unit_id_map,
4658                                     u->manager->unit_name_map,
4659                                     u->id,
4660                                     &fragment,
4661                                     &names);
4662         if (r < 0 && r != -ENOENT)
4663                 return r;
4664
4665         if (fragment) {
4666                 /* Open the file, check if this is a mask, otherwise read. */
4667                 _cleanup_fclose_ FILE *f = NULL;
4668
4669                 /* Try to open the file name. A symlink is OK, for example for linked files or masks. We
4670                  * expect that all symlinks within the lookup paths have been already resolved, but we don't
4671                  * verify this here. */
4672                 f = fopen(fragment, "re");
4673                 if (!f)
4674                         return log_unit_notice_errno(u, errno, "Failed to open %s: %m", fragment);
4675
4676                 if (fstat(fileno(f), &st) < 0)
4677                         return -errno;
4678
4679                 r = free_and_strdup(&u->fragment_path, fragment);
4680                 if (r < 0)
4681                         return r;
4682
4683                 if (null_or_empty(&st)) {
4684                         u->load_state = UNIT_MASKED;
4685                         u->fragment_mtime = 0;
4686                 } else {
4687                         u->load_state = UNIT_LOADED;
4688                         u->fragment_mtime = timespec_load(&st.st_mtim);
4689
4690                         /* Now, parse the file contents */
4691                         r = config_parse(u->id, fragment, f,
4692                                          UNIT_VTABLE(u)->sections,
4693                                          config_item_perf_lookup, load_fragment_gperf_lookup,
4694                                          CONFIG_PARSE_ALLOW_INCLUDE, u);
4695                         if (r == -ENOEXEC)
4696                                 log_unit_notice_errno(u, r, "Unit configuration has fatal error, unit will not be started.");
4697                         if (r < 0)
4698                                 return r;
4699                 }
4700         }
4701
4702         if (u->source_path) {
4703                 if (stat(u->source_path, &st) >= 0)
4704                         u->source_mtime = timespec_load(&st.st_mtim);
4705                 else
4706                         u->source_mtime = 0;
4707         }
4708
4709         /* We do the merge dance here because for some unit types, the unit might have aliases which are not
4710          * declared in the file system. In particular, this is true (and frequent) for device and swap units.
4711          */
4712         Unit *merged;
4713         const char *id = u->id;
4714         _cleanup_free_ char *free_id = NULL;
4715
4716         if (fragment) {
4717                 id = basename(fragment);
4718                 if (unit_name_is_valid(id, UNIT_NAME_TEMPLATE)) {
4719                         assert(u->instance); /* If we're not trying to use a template for non-instanced unit,
4720                                               * this must be set. */
4721
4722                         r = unit_name_replace_instance(id, u->instance, &free_id);
4723                         if (r < 0)
4724                                 return log_debug_errno(r, "Failed to build id (%s + %s): %m", id, u->instance);
4725                         id = free_id;
4726                 }
4727         }
4728
4729         merged = u;
4730         r = merge_by_names(&merged, names, id);
4731         if (r < 0)
4732                 return r;
4733
4734         if (merged != u)
4735                 u->load_state = UNIT_MERGED;
4736
4737         return 0;
4738 }
4739
4740 void unit_dump_config_items(FILE *f) {
4741         static const struct {
4742                 const ConfigParserCallback callback;
4743                 const char *rvalue;
4744         } table[] = {
4745                 { config_parse_warn_compat,           "NOTSUPPORTED" },
4746                 { config_parse_int,                   "INTEGER" },
4747                 { config_parse_unsigned,              "UNSIGNED" },
4748                 { config_parse_iec_size,              "SIZE" },
4749                 { config_parse_iec_uint64,            "SIZE" },
4750                 { config_parse_si_size,               "SIZE" },
4751                 { config_parse_bool,                  "BOOLEAN" },
4752                 { config_parse_string,                "STRING" },
4753                 { config_parse_path,                  "PATH" },
4754                 { config_parse_unit_path_printf,      "PATH" },
4755                 { config_parse_strv,                  "STRING [...]" },
4756                 { config_parse_exec_nice,             "NICE" },
4757                 { config_parse_exec_oom_score_adjust, "OOMSCOREADJUST" },
4758                 { config_parse_exec_io_class,         "IOCLASS" },
4759                 { config_parse_exec_io_priority,      "IOPRIORITY" },
4760                 { config_parse_exec_cpu_sched_policy, "CPUSCHEDPOLICY" },
4761                 { config_parse_exec_cpu_sched_prio,   "CPUSCHEDPRIO" },
4762                 { config_parse_exec_cpu_affinity,     "CPUAFFINITY" },
4763                 { config_parse_mode,                  "MODE" },
4764                 { config_parse_unit_env_file,         "FILE" },
4765                 { config_parse_exec_output,           "OUTPUT" },
4766                 { config_parse_exec_input,            "INPUT" },
4767                 { config_parse_log_facility,          "FACILITY" },
4768                 { config_parse_log_level,             "LEVEL" },
4769                 { config_parse_exec_secure_bits,      "SECUREBITS" },
4770                 { config_parse_capability_set,        "BOUNDINGSET" },
4771                 { config_parse_rlimit,                "LIMIT" },
4772                 { config_parse_unit_deps,             "UNIT [...]" },
4773                 { config_parse_exec,                  "PATH [ARGUMENT [...]]" },
4774                 { config_parse_service_type,          "SERVICETYPE" },
4775                 { config_parse_service_restart,       "SERVICERESTART" },
4776                 { config_parse_kill_mode,             "KILLMODE" },
4777                 { config_parse_signal,                "SIGNAL" },
4778                 { config_parse_socket_listen,         "SOCKET [...]" },
4779                 { config_parse_socket_bind,           "SOCKETBIND" },
4780                 { config_parse_socket_bindtodevice,   "NETWORKINTERFACE" },
4781                 { config_parse_sec,                   "SECONDS" },
4782                 { config_parse_nsec,                  "NANOSECONDS" },
4783                 { config_parse_namespace_path_strv,   "PATH [...]" },
4784                 { config_parse_bind_paths,            "PATH[:PATH[:OPTIONS]] [...]" },
4785                 { config_parse_unit_requires_mounts_for, "PATH [...]" },
4786                 { config_parse_exec_mount_flags,      "MOUNTFLAG [...]" },
4787                 { config_parse_unit_string_printf,    "STRING" },
4788                 { config_parse_trigger_unit,          "UNIT" },
4789                 { config_parse_timer,                 "TIMER" },
4790                 { config_parse_path_spec,             "PATH" },
4791                 { config_parse_notify_access,         "ACCESS" },
4792                 { config_parse_ip_tos,                "TOS" },
4793                 { config_parse_unit_condition_path,   "CONDITION" },
4794                 { config_parse_unit_condition_string, "CONDITION" },
4795                 { config_parse_unit_condition_null,   "CONDITION" },
4796                 { config_parse_unit_slice,            "SLICE" },
4797                 { config_parse_documentation,         "URL" },
4798                 { config_parse_service_timeout,       "SECONDS" },
4799                 { config_parse_emergency_action,      "ACTION" },
4800                 { config_parse_set_status,            "STATUS" },
4801                 { config_parse_service_sockets,       "SOCKETS" },
4802                 { config_parse_environ,               "ENVIRON" },
4803 #if HAVE_SECCOMP
4804                 { config_parse_syscall_filter,        "SYSCALLS" },
4805                 { config_parse_syscall_archs,         "ARCHS" },
4806                 { config_parse_syscall_errno,         "ERRNO" },
4807                 { config_parse_address_families,      "FAMILIES" },
4808                 { config_parse_restrict_namespaces,   "NAMESPACES"  },
4809 #endif
4810                 { config_parse_cpu_shares,            "SHARES" },
4811                 { config_parse_cg_weight,             "WEIGHT" },
4812                 { config_parse_memory_limit,          "LIMIT" },
4813                 { config_parse_device_allow,          "DEVICE" },
4814                 { config_parse_device_policy,         "POLICY" },
4815                 { config_parse_io_limit,              "LIMIT" },
4816                 { config_parse_io_device_weight,      "DEVICEWEIGHT" },
4817                 { config_parse_io_device_latency,     "DEVICELATENCY" },
4818                 { config_parse_blockio_bandwidth,     "BANDWIDTH" },
4819                 { config_parse_blockio_weight,        "WEIGHT" },
4820                 { config_parse_blockio_device_weight, "DEVICEWEIGHT" },
4821                 { config_parse_long,                  "LONG" },
4822                 { config_parse_socket_service,        "SERVICE" },
4823 #if HAVE_SELINUX
4824                 { config_parse_exec_selinux_context,  "LABEL" },
4825 #endif
4826                 { config_parse_job_mode,              "MODE" },
4827                 { config_parse_job_mode_isolate,      "BOOLEAN" },
4828                 { config_parse_personality,           "PERSONALITY" },
4829         };
4830
4831         const char *prev = NULL;
4832         const char *i;
4833
4834         assert(f);
4835
4836         NULSTR_FOREACH(i, load_fragment_gperf_nulstr) {
4837                 const char *rvalue = "OTHER", *lvalue;
4838                 const ConfigPerfItem *p;
4839                 size_t prefix_len;
4840                 const char *dot;
4841                 unsigned j;
4842
4843                 assert_se(p = load_fragment_gperf_lookup(i, strlen(i)));
4844
4845                 /* Hide legacy settings */
4846                 if (p->parse == config_parse_warn_compat &&
4847                     p->ltype == DISABLED_LEGACY)
4848                         continue;
4849
4850                 for (j = 0; j < ELEMENTSOF(table); j++)
4851                         if (p->parse == table[j].callback) {
4852                                 rvalue = table[j].rvalue;
4853                                 break;
4854                         }
4855
4856                 dot = strchr(i, '.');
4857                 lvalue = dot ? dot + 1 : i;
4858                 prefix_len = dot-i;
4859
4860                 if (dot)
4861                         if (!prev || !strneq(prev, i, prefix_len+1)) {
4862                                 if (prev)
4863                                         fputc('\n', f);
4864
4865                                 fprintf(f, "[%.*s]\n", (int) prefix_len, i);
4866                         }
4867
4868                 fprintf(f, "%s=%s\n", lvalue, rvalue);
4869                 prev = i;
4870         }
4871 }
4872
4873 int config_parse_cpu_affinity2(
4874                 const char *unit,
4875                 const char *filename,
4876                 unsigned line,
4877                 const char *section,
4878                 unsigned section_line,
4879                 const char *lvalue,
4880                 int ltype,
4881                 const char *rvalue,
4882                 void *data,
4883                 void *userdata) {
4884
4885         CPUSet *affinity = data;
4886
4887         assert(affinity);
4888
4889         (void) parse_cpu_set_extend(rvalue, affinity, true, unit, filename, line, lvalue);
4890
4891         return 0;
4892 }
4893
4894 int config_parse_show_status(
4895                 const char* unit,
4896                 const char *filename,
4897                 unsigned line,
4898                 const char *section,
4899                 unsigned section_line,
4900                 const char *lvalue,
4901                 int ltype,
4902                 const char *rvalue,
4903                 void *data,
4904                 void *userdata) {
4905
4906         int k;
4907         ShowStatus *b = data;
4908
4909         assert(filename);
4910         assert(lvalue);
4911         assert(rvalue);
4912         assert(data);
4913
4914         k = parse_show_status(rvalue, b);
4915         if (k < 0) {
4916                 log_syntax(unit, LOG_ERR, filename, line, k, "Failed to parse show status setting, ignoring: %s", rvalue);
4917                 return 0;
4918         }
4919
4920         return 0;
4921 }
4922
4923 int config_parse_output_restricted(
4924                 const char* unit,
4925                 const char *filename,
4926                 unsigned line,
4927                 const char *section,
4928                 unsigned section_line,
4929                 const char *lvalue,
4930                 int ltype,
4931                 const char *rvalue,
4932                 void *data,
4933                 void *userdata) {
4934
4935         ExecOutput t, *eo = data;
4936
4937         assert(filename);
4938         assert(lvalue);
4939         assert(rvalue);
4940         assert(data);
4941
4942         t = exec_output_from_string(rvalue);
4943         if (t < 0) {
4944                 log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse output type, ignoring: %s", rvalue);
4945                 return 0;
4946         }
4947
4948         if (IN_SET(t, EXEC_OUTPUT_SOCKET, EXEC_OUTPUT_NAMED_FD, EXEC_OUTPUT_FILE, EXEC_OUTPUT_FILE_APPEND)) {
4949                 log_syntax(unit, LOG_ERR, filename, line, 0, "Standard output types socket, fd:, file:, append: are not supported as defaults, ignoring: %s", rvalue);
4950                 return 0;
4951         }
4952
4953         *eo = t;
4954         return 0;
4955 }
4956
4957 int config_parse_crash_chvt(
4958                 const char* unit,
4959                 const char *filename,
4960                 unsigned line,
4961                 const char *section,
4962                 unsigned section_line,
4963                 const char *lvalue,
4964                 int ltype,
4965                 const char *rvalue,
4966                 void *data,
4967                 void *userdata) {
4968
4969         int r;
4970
4971         assert(filename);
4972         assert(lvalue);
4973         assert(rvalue);
4974         assert(data);
4975
4976         r = parse_crash_chvt(rvalue, data);
4977         if (r < 0) {
4978                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse CrashChangeVT= setting, ignoring: %s", rvalue);
4979                 return 0;
4980         }
4981
4982         return 0;
4983 }
4984
4985 int config_parse_timeout_abort(
4986                 const char* unit,
4987                 const char *filename,
4988                 unsigned line,
4989                 const char *section,
4990                 unsigned section_line,
4991                 const char *lvalue,
4992                 int ltype,
4993                 const char *rvalue,
4994                 void *data,
4995                 void *userdata) {
4996
4997         usec_t *timeout_usec = data;
4998         int r;
4999
5000         assert(filename);
5001         assert(lvalue);
5002         assert(rvalue);
5003         assert(timeout_usec);
5004
5005         rvalue += strspn(rvalue, WHITESPACE);
5006         if (isempty(rvalue)) {
5007                 *timeout_usec = false;
5008                 return 0;
5009         }
5010
5011         r = parse_sec(rvalue, timeout_usec);
5012         if (r < 0) {
5013                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse DefaultTimeoutAbortSec= setting, ignoring: %s", rvalue);
5014                 return 0;
5015         }
5016
5017         *timeout_usec = true;
5018         return 0;
5019 }