src/core/load-fragment.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   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 "sd-messages.h"
  17
  18 #include "af-list.h"
  19 #include "all-units.h"
  20 #include "alloc-util.h"
  21 #include "bpf-firewall.h"
  22 #include "bpf-lsm.h"
  23 #include "bpf-program.h"
  24 #include "bpf-socket-bind.h"
  25 #include "bus-error.h"
  26 #include "bus-internal.h"
  27 #include "bus-util.h"
  28 #include "cap-list.h"
  29 #include "capability-util.h"
  30 #include "cgroup-setup.h"
  31 #include "conf-parser.h"
  32 #include "core-varlink.h"
  33 #include "cpu-set-util.h"
  34 #include "creds-util.h"
  35 #include "env-util.h"
  36 #include "errno-list.h"
  37 #include "escape.h"
  38 #include "fd-util.h"
  39 #include "fileio.h"
  40 #include "fs-util.h"
  41 #include "hexdecoct.h"
  42 #include "io-util.h"
  43 #include "ioprio-util.h"
  44 #include "ip-protocol-list.h"
  45 #include "journal-file.h"
  46 #include "limits-util.h"
  47 #include "load-fragment.h"
  48 #include "log.h"
  49 #include "missing_ioprio.h"
  50 #include "mountpoint-util.h"
  51 #include "nulstr-util.h"
  52 #include "parse-helpers.h"
  53 #include "parse-util.h"
  54 #include "path-util.h"
  55 #include "percent-util.h"
  56 #include "process-util.h"
  57 #if HAVE_SECCOMP
  58 #include "seccomp-util.h"
  59 #endif
  60 #include "securebits-util.h"
  61 #include "signal-util.h"
  62 #include "socket-netlink.h"
  63 #include "specifier.h"
  64 #include "stat-util.h"
  65 #include "string-util.h"
  66 #include "strv.h"
  67 #include "syslog-util.h"
  68 #include "time-util.h"
  69 #include "unit-name.h"
  70 #include "unit-printf.h"
  71 #include "user-util.h"
  72 #include "utf8.h"
  73 #include "web-util.h"
  74
  75 static int parse_socket_protocol(const char *s) {
  76         int r;
  77
  78         r = parse_ip_protocol(s);
  79         if (r < 0)
  80                 return r;
  81         if (!IN_SET(r, IPPROTO_UDPLITE, IPPROTO_SCTP))
  82                 return -EPROTONOSUPPORT;
  83
  84         return r;
  85 }
  86
  87 int parse_crash_chvt(const char *value, int *data) {
  88         int b;
  89
  90         if (safe_atoi(value, data) >= 0)
  91                 return 0;
  92
  93         b = parse_boolean(value);
  94         if (b < 0)
  95                 return b;
  96
  97         if (b > 0)
  98                 *data = 0; /* switch to where kmsg goes */
  99         else
 100                 *data = -1; /* turn off switching */
 101
 102         return 0;
 103 }
 104
 105 int parse_confirm_spawn(const char *value, char **console) {
 106         char *s;
 107         int r;
 108
 109         r = value ? parse_boolean(value) : 1;
 110         if (r == 0) {
 111                 *console = NULL;
 112                 return 0;
 113         } else if (r > 0) /* on with default tty */
 114                 s = strdup("/dev/console");
 115         else if (is_path(value)) /* on with fully qualified path */
 116                 s = strdup(value);
 117         else /* on with only a tty file name, not a fully qualified path */
 118                 s = path_join("/dev/", value);
 119         if (!s)
 120                 return -ENOMEM;
 121
 122         *console = s;
 123         return 0;
 124 }
 125
 126 DEFINE_CONFIG_PARSE(config_parse_socket_protocol, parse_socket_protocol, "Failed to parse socket protocol");
 127 DEFINE_CONFIG_PARSE(config_parse_exec_secure_bits, secure_bits_from_string, "Failed to parse secure bits");
 128 DEFINE_CONFIG_PARSE_ENUM(config_parse_collect_mode, collect_mode, CollectMode, "Failed to parse garbage collection mode");
 129 DEFINE_CONFIG_PARSE_ENUM(config_parse_device_policy, cgroup_device_policy, CGroupDevicePolicy, "Failed to parse device policy");
 130 DEFINE_CONFIG_PARSE_ENUM(config_parse_exec_keyring_mode, exec_keyring_mode, ExecKeyringMode, "Failed to parse keyring mode");
 131 DEFINE_CONFIG_PARSE_ENUM(config_parse_protect_proc, protect_proc, ProtectProc, "Failed to parse /proc/ protection mode");
 132 DEFINE_CONFIG_PARSE_ENUM(config_parse_proc_subset, proc_subset, ProcSubset, "Failed to parse /proc/ subset mode");
 133 DEFINE_CONFIG_PARSE_ENUM(config_parse_exec_utmp_mode, exec_utmp_mode, ExecUtmpMode, "Failed to parse utmp mode");
 134 DEFINE_CONFIG_PARSE_ENUM(config_parse_job_mode, job_mode, JobMode, "Failed to parse job mode");
 135 DEFINE_CONFIG_PARSE_ENUM(config_parse_notify_access, notify_access, NotifyAccess, "Failed to parse notify access specifier");
 136 DEFINE_CONFIG_PARSE_ENUM(config_parse_protect_home, protect_home, ProtectHome, "Failed to parse protect home value");
 137 DEFINE_CONFIG_PARSE_ENUM(config_parse_protect_system, protect_system, ProtectSystem, "Failed to parse protect system value");
 138 DEFINE_CONFIG_PARSE_ENUM(config_parse_runtime_preserve_mode, exec_preserve_mode, ExecPreserveMode, "Failed to parse runtime directory preserve mode");
 139 DEFINE_CONFIG_PARSE_ENUM(config_parse_service_type, service_type, ServiceType, "Failed to parse service type");
 140 DEFINE_CONFIG_PARSE_ENUM(config_parse_service_exit_type, service_exit_type, ServiceExitType, "Failed to parse service exit type");
 141 DEFINE_CONFIG_PARSE_ENUM(config_parse_service_restart, service_restart, ServiceRestart, "Failed to parse service restart specifier");
 142 DEFINE_CONFIG_PARSE_ENUM(config_parse_service_timeout_failure_mode, service_timeout_failure_mode, ServiceTimeoutFailureMode, "Failed to parse timeout failure mode");
 143 DEFINE_CONFIG_PARSE_ENUM(config_parse_socket_bind, socket_address_bind_ipv6_only_or_bool, SocketAddressBindIPv6Only, "Failed to parse bind IPv6 only value");
 144 DEFINE_CONFIG_PARSE_ENUM(config_parse_oom_policy, oom_policy, OOMPolicy, "Failed to parse OOM policy");
 145 DEFINE_CONFIG_PARSE_ENUM(config_parse_managed_oom_preference, managed_oom_preference, ManagedOOMPreference, "Failed to parse ManagedOOMPreference=");
 146 DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_ip_tos, ip_tos, int, -1, "Failed to parse IP TOS value");
 147 DEFINE_CONFIG_PARSE_PTR(config_parse_blockio_weight, cg_blkio_weight_parse, uint64_t, "Invalid block IO weight");
 148 DEFINE_CONFIG_PARSE_PTR(config_parse_cg_weight, cg_weight_parse, uint64_t, "Invalid weight");
 149 DEFINE_CONFIG_PARSE_PTR(config_parse_cpu_shares, cg_cpu_shares_parse, uint64_t, "Invalid CPU shares");
 150 DEFINE_CONFIG_PARSE_PTR(config_parse_exec_mount_flags, mount_propagation_flags_from_string, unsigned long, "Failed to parse mount flag");
 151 DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_numa_policy, mpol, int, -1, "Invalid NUMA policy type");
 152 DEFINE_CONFIG_PARSE_ENUM(config_parse_status_unit_format, status_unit_format, StatusUnitFormat, "Failed to parse status unit format");
 153 DEFINE_CONFIG_PARSE_ENUM_FULL(config_parse_socket_timestamping, socket_timestamping_from_string_harder, SocketTimestamping, "Failed to parse timestamping precision");
 154
 155 bool contains_instance_specifier_superset(const char *s) {
 156         const char *p, *q;
 157         bool percent = false;
 158
 159         assert(s);
 160
 161         p = strchr(s, '@');
 162         if (!p)
 163                 return false;
 164
 165         p++; /* Skip '@' */
 166
 167         q = strrchr(p, '.');
 168         if (!q)
 169                 q = p + strlen(p);
 170
 171         /* If the string is just the instance specifier, it's not a superset of the instance. */
 172         if (memcmp_nn(p, q - p, "%i", strlen("%i")) == 0)
 173                 return false;
 174
 175         /* %i, %n and %N all expand to the instance or a superset of it. */
 176         for (; p < q; p++) {
 177                 if (*p == '%')
 178                         percent = !percent;
 179                 else if (percent) {
 180                         if (IN_SET(*p, 'n', 'N', 'i'))
 181                                 return true;
 182                         percent = false;
 183                 }
 184         }
 185
 186         return false;
 187 }
 188
 189 /* `name` is the rendered version of `format` via `unit_printf` or similar functions. */
 190 int unit_is_likely_recursive_template_dependency(Unit *u, const char *name, const char *format) {
 191         const char *fragment_path;
 192         int r;
 193
 194         assert(u);
 195         assert(name);
 196
 197         /* If a template unit has a direct dependency on itself that includes the unit instance as part of
 198          * the template instance via a unit specifier (%i, %n or %N), this will almost certainly lead to
 199          * infinite recursion as systemd will keep instantiating new instances of the template unit.
 200          * https://github.com/systemd/systemd/issues/17602 shows a good example of how this can happen in
 201          * practice. To guard against this, we check for templates that depend on themselves and have the
 202          * instantiated unit instance included as part of the template instance of the dependency via a
 203          * specifier.
 204          *
 205          * For example, if systemd-notify@.service depends on systemd-notify@%n.service, this will result in
 206          * infinite recursion.
 207          */
 208
 209         if (!unit_name_is_valid(name, UNIT_NAME_INSTANCE))
 210                 return false;
 211
 212         if (!unit_name_prefix_equal(u->id, name))
 213                 return false;
 214
 215         if (u->type != unit_name_to_type(name))
 216                 return false;
 217
 218         r = unit_file_find_fragment(u->manager->unit_id_map, u->manager->unit_name_map, name, &fragment_path, NULL);
 219         if (r < 0)
 220                 return r;
 221
 222         /* Fragment paths should also be equal as a custom fragment for a specific template instance
 223          * wouldn't necessarily lead to infinite recursion. */
 224         if (!path_equal_ptr(u->fragment_path, fragment_path))
 225                 return false;
 226
 227         if (!contains_instance_specifier_superset(format))
 228                 return false;
 229
 230         return true;
 231 }
 232
 233 int config_parse_unit_deps(
 234                 const char *unit,
 235                 const char *filename,
 236                 unsigned line,
 237                 const char *section,
 238                 unsigned section_line,
 239                 const char *lvalue,
 240                 int ltype,
 241                 const char *rvalue,
 242                 void *data,
 243                 void *userdata) {
 244
 245         UnitDependency d = ltype;
 246         Unit *u = userdata;
 247
 248         assert(filename);
 249         assert(lvalue);
 250         assert(rvalue);
 251
 252         for (const char *p = rvalue;;) {
 253                 _cleanup_free_ char *word = NULL, *k = NULL;
 254                 int r;
 255
 256                 r = extract_first_word(&p, &word, NULL, EXTRACT_RETAIN_ESCAPE);
 257                 if (r == 0)
 258                         return 0;
 259                 if (r == -ENOMEM)
 260                         return log_oom();
 261                 if (r < 0) {
 262                         log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
 263                         return 0;
 264                 }
 265
 266                 r = unit_name_printf(u, word, &k);
 267                 if (r < 0) {
 268                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", word);
 269                         continue;
 270                 }
 271
 272                 r = unit_is_likely_recursive_template_dependency(u, k, word);
 273                 if (r < 0) {
 274                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to determine if '%s' is a recursive dependency, ignoring: %m", k);
 275                         continue;
 276                 }
 277                 if (r > 0) {
 278                         log_syntax(unit, LOG_DEBUG, filename, line, 0,
 279                                    "Dropping dependency %s=%s that likely leads to infinite recursion.",
 280                                    unit_dependency_to_string(d), word);
 281                         continue;
 282                 }
 283
 284                 r = unit_add_dependency_by_name(u, d, k, true, UNIT_DEPENDENCY_FILE);
 285                 if (r < 0)
 286                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to add dependency on %s, ignoring: %m", k);
 287         }
 288 }
 289
 290 int config_parse_obsolete_unit_deps(
 291                 const char *unit,
 292                 const char *filename,
 293                 unsigned line,
 294                 const char *section,
 295                 unsigned section_line,
 296                 const char *lvalue,
 297                 int ltype,
 298                 const char *rvalue,
 299                 void *data,
 300                 void *userdata) {
 301
 302         log_syntax(unit, LOG_WARNING, filename, line, 0,
 303                    "Unit dependency type %s= is obsolete, replacing by %s=, please update your unit file", lvalue, unit_dependency_to_string(ltype));
 304
 305         return config_parse_unit_deps(unit, filename, line, section, section_line, lvalue, ltype, rvalue, data, userdata);
 306 }
 307
 308 int config_parse_unit_string_printf(
 309                 const char *unit,
 310                 const char *filename,
 311                 unsigned line,
 312                 const char *section,
 313                 unsigned section_line,
 314                 const char *lvalue,
 315                 int ltype,
 316                 const char *rvalue,
 317                 void *data,
 318                 void *userdata) {
 319
 320         _cleanup_free_ char *k = NULL;
 321         const Unit *u = userdata;
 322         int r;
 323
 324         assert(filename);
 325         assert(lvalue);
 326         assert(rvalue);
 327         assert(u);
 328
 329         r = unit_full_printf(u, rvalue, &k);
 330         if (r < 0) {
 331                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
 332                 return 0;
 333         }
 334
 335         return config_parse_string(unit, filename, line, section, section_line, lvalue, ltype, k, data, userdata);
 336 }
 337
 338 int config_parse_unit_strv_printf(
 339                 const char *unit,
 340                 const char *filename,
 341                 unsigned line,
 342                 const char *section,
 343                 unsigned section_line,
 344                 const char *lvalue,
 345                 int ltype,
 346                 const char *rvalue,
 347                 void *data,
 348                 void *userdata) {
 349
 350         const Unit *u = userdata;
 351         _cleanup_free_ char *k = NULL;
 352         int r;
 353
 354         assert(filename);
 355         assert(lvalue);
 356         assert(rvalue);
 357         assert(u);
 358
 359         r = unit_full_printf(u, rvalue, &k);
 360         if (r < 0) {
 361                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
 362                 return 0;
 363         }
 364
 365         return config_parse_strv(unit, filename, line, section, section_line, lvalue, ltype, k, data, userdata);
 366 }
 367
 368 int config_parse_unit_path_printf(
 369                 const char *unit,
 370                 const char *filename,
 371                 unsigned line,
 372                 const char *section,
 373                 unsigned section_line,
 374                 const char *lvalue,
 375                 int ltype,
 376                 const char *rvalue,
 377                 void *data,
 378                 void *userdata) {
 379
 380         _cleanup_free_ char *k = NULL;
 381         const Unit *u = userdata;
 382         int r;
 383         bool fatal = ltype;
 384
 385         assert(filename);
 386         assert(lvalue);
 387         assert(rvalue);
 388         assert(u);
 389
 390         r = unit_path_printf(u, rvalue, &k);
 391         if (r < 0) {
 392                 log_syntax(unit, fatal ? LOG_ERR : LOG_WARNING, filename, line, r,
 393                            "Failed to resolve unit specifiers in '%s'%s: %m",
 394                            rvalue, fatal ? "" : ", ignoring");
 395                 return fatal ? -ENOEXEC : 0;
 396         }
 397
 398         return config_parse_path(unit, filename, line, section, section_line, lvalue, ltype, k, data, userdata);
 399 }
 400
 401 int config_parse_colon_separated_paths(
 402                 const char *unit,
 403                 const char *filename,
 404                 unsigned line,
 405                 const char *section,
 406                 unsigned section_line,
 407                 const char *lvalue,
 408                 int ltype,
 409                 const char *rvalue,
 410                 void *data,
 411                 void *userdata) {
 412         char ***sv = data;
 413         const Unit *u = userdata;
 414         int r;
 415
 416         assert(filename);
 417         assert(lvalue);
 418         assert(rvalue);
 419         assert(data);
 420
 421         if (isempty(rvalue)) {
 422                 /* Empty assignment resets the list */
 423                 *sv = strv_free(*sv);
 424                 return 0;
 425         }
 426
 427         for (const char *p = rvalue;;) {
 428                 _cleanup_free_ char *word = NULL, *k = NULL;
 429
 430                 r = extract_first_word(&p, &word, ":", EXTRACT_DONT_COALESCE_SEPARATORS);
 431                 if (r == -ENOMEM)
 432                         return log_oom();
 433                 if (r < 0) {
 434                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to extract first word, ignoring: %s", rvalue);
 435                         return 0;
 436                 }
 437                 if (r == 0)
 438                         break;
 439
 440                 r = unit_path_printf(u, word, &k);
 441                 if (r < 0) {
 442                         log_syntax(unit, LOG_WARNING, filename, line, r,
 443                                    "Failed to resolve unit specifiers in '%s', ignoring: %m", word);
 444                         return 0;
 445                 }
 446
 447                 r = path_simplify_and_warn(k, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
 448                 if (r < 0)
 449                         return 0;
 450
 451                 r = strv_consume(sv, TAKE_PTR(k));
 452                 if (r < 0)
 453                         return log_oom();
 454         }
 455
 456         return 0;
 457 }
 458
 459 int config_parse_unit_path_strv_printf(
 460                 const char *unit,
 461                 const char *filename,
 462                 unsigned line,
 463                 const char *section,
 464                 unsigned section_line,
 465                 const char *lvalue,
 466                 int ltype,
 467                 const char *rvalue,
 468                 void *data,
 469                 void *userdata) {
 470
 471         char ***x = data;
 472         const Unit *u = userdata;
 473         int r;
 474
 475         assert(filename);
 476         assert(lvalue);
 477         assert(rvalue);
 478         assert(u);
 479
 480         if (isempty(rvalue)) {
 481                 *x = strv_free(*x);
 482                 return 0;
 483         }
 484
 485         for (const char *p = rvalue;;) {
 486                 _cleanup_free_ char *word = NULL, *k = NULL;
 487
 488                 r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
 489                 if (r == 0)
 490                         return 0;
 491                 if (r == -ENOMEM)
 492                         return log_oom();
 493                 if (r < 0) {
 494                         log_syntax(unit, LOG_WARNING, filename, line, r,
 495                                    "Invalid syntax, ignoring: %s", rvalue);
 496                         return 0;
 497                 }
 498
 499                 r = unit_path_printf(u, word, &k);
 500                 if (r < 0) {
 501                         log_syntax(unit, LOG_WARNING, filename, line, r,
 502                                    "Failed to resolve unit specifiers in '%s', ignoring: %m", word);
 503                         return 0;
 504                 }
 505
 506                 r = path_simplify_and_warn(k, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
 507                 if (r < 0)
 508                         return 0;
 509
 510                 r = strv_consume(x, TAKE_PTR(k));
 511                 if (r < 0)
 512                         return log_oom();
 513         }
 514 }
 515
 516 static int patch_var_run(
 517                 const char *unit,
 518                 const char *filename,
 519                 unsigned line,
 520                 const char *lvalue,
 521                 char **path) {
 522
 523         const char *e;
 524         char *z;
 525
 526         e = path_startswith(*path, "/var/run/");
 527         if (!e)
 528                 return 0;
 529
 530         z = path_join("/run/", e);
 531         if (!z)
 532                 return log_oom();
 533
 534         log_syntax(unit, LOG_NOTICE, filename, line, 0,
 535                    "%s= references a path below legacy directory /var/run/, updating %s → %s; "
 536                    "please update the unit file accordingly.", lvalue, *path, z);
 537
 538         free_and_replace(*path, z);
 539
 540         return 1;
 541 }
 542
 543 int config_parse_socket_listen(
 544                 const char *unit,
 545                 const char *filename,
 546                 unsigned line,
 547                 const char *section,
 548                 unsigned section_line,
 549                 const char *lvalue,
 550                 int ltype,
 551                 const char *rvalue,
 552                 void *data,
 553                 void *userdata) {
 554
 555         _cleanup_free_ SocketPort *p = NULL;
 556         SocketPort *tail;
 557         Socket *s;
 558         int r;
 559
 560         assert(filename);
 561         assert(lvalue);
 562         assert(rvalue);
 563         assert(data);
 564
 565         s = SOCKET(data);
 566
 567         if (isempty(rvalue)) {
 568                 /* An empty assignment removes all ports */
 569                 socket_free_ports(s);
 570                 return 0;
 571         }
 572
 573         p = new0(SocketPort, 1);
 574         if (!p)
 575                 return log_oom();
 576
 577         if (ltype != SOCKET_SOCKET) {
 578                 _cleanup_free_ char *k = NULL;
 579
 580                 r = unit_path_printf(UNIT(s), rvalue, &k);
 581                 if (r < 0) {
 582                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
 583                         return 0;
 584                 }
 585
 586                 r = path_simplify_and_warn(k, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
 587                 if (r < 0)
 588                         return 0;
 589
 590                 if (ltype == SOCKET_FIFO) {
 591                         r = patch_var_run(unit, filename, line, lvalue, &k);
 592                         if (r < 0)
 593                                 return r;
 594                 }
 595
 596                 free_and_replace(p->path, k);
 597                 p->type = ltype;
 598
 599         } else if (streq(lvalue, "ListenNetlink")) {
 600                 _cleanup_free_ char  *k = NULL;
 601
 602                 r = unit_path_printf(UNIT(s), rvalue, &k);
 603                 if (r < 0) {
 604                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
 605                         return 0;
 606                 }
 607
 608                 r = socket_address_parse_netlink(&p->address, k);
 609                 if (r < 0) {
 610                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse address value in '%s', ignoring: %m", k);
 611                         return 0;
 612                 }
 613
 614                 p->type = SOCKET_SOCKET;
 615
 616         } else {
 617                 _cleanup_free_ char *k = NULL;
 618
 619                 r = unit_path_printf(UNIT(s), rvalue, &k);
 620                 if (r < 0) {
 621                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
 622                         return 0;
 623                 }
 624
 625                 if (k[0] == '/') { /* Only for AF_UNIX file system sockets… */
 626                         r = patch_var_run(unit, filename, line, lvalue, &k);
 627                         if (r < 0)
 628                                 return r;
 629                 }
 630
 631                 r = socket_address_parse_and_warn(&p->address, k);
 632                 if (r < 0) {
 633                         if (r != -EAFNOSUPPORT)
 634                                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse address value in '%s', ignoring: %m", k);
 635                         return 0;
 636                 }
 637
 638                 if (streq(lvalue, "ListenStream"))
 639                         p->address.type = SOCK_STREAM;
 640                 else if (streq(lvalue, "ListenDatagram"))
 641                         p->address.type = SOCK_DGRAM;
 642                 else {
 643                         assert(streq(lvalue, "ListenSequentialPacket"));
 644                         p->address.type = SOCK_SEQPACKET;
 645                 }
 646
 647                 if (socket_address_family(&p->address) != AF_UNIX && p->address.type == SOCK_SEQPACKET) {
 648                         log_syntax(unit, LOG_WARNING, filename, line, 0, "Address family not supported, ignoring: %s", rvalue);
 649                         return 0;
 650                 }
 651
 652                 p->type = SOCKET_SOCKET;
 653         }
 654
 655         p->fd = -1;
 656         p->auxiliary_fds = NULL;
 657         p->n_auxiliary_fds = 0;
 658         p->socket = s;
 659
 660         LIST_FIND_TAIL(port, s->ports, tail);
 661         LIST_INSERT_AFTER(port, s->ports, tail, p);
 662
 663         p = NULL;
 664
 665         return 0;
 666 }
 667
 668 int config_parse_exec_nice(
 669                 const char *unit,
 670                 const char *filename,
 671                 unsigned line,
 672                 const char *section,
 673                 unsigned section_line,
 674                 const char *lvalue,
 675                 int ltype,
 676                 const char *rvalue,
 677                 void *data,
 678                 void *userdata) {
 679
 680         ExecContext *c = data;
 681         int priority, r;
 682
 683         assert(filename);
 684         assert(lvalue);
 685         assert(rvalue);
 686         assert(data);
 687
 688         if (isempty(rvalue)) {
 689                 c->nice_set = false;
 690                 return 0;
 691         }
 692
 693         r = parse_nice(rvalue, &priority);
 694         if (r < 0) {
 695                 if (r == -ERANGE)
 696                         log_syntax(unit, LOG_WARNING, filename, line, r, "Nice priority out of range, ignoring: %s", rvalue);
 697                 else
 698                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse nice priority '%s', ignoring: %m", rvalue);
 699                 return 0;
 700         }
 701
 702         c->nice = priority;
 703         c->nice_set = true;
 704
 705         return 0;
 706 }
 707
 708 int config_parse_exec_oom_score_adjust(
 709                 const char* unit,
 710                 const char *filename,
 711                 unsigned line,
 712                 const char *section,
 713                 unsigned section_line,
 714                 const char *lvalue,
 715                 int ltype,
 716                 const char *rvalue,
 717                 void *data,
 718                 void *userdata) {
 719
 720         ExecContext *c = data;
 721         int oa, r;
 722
 723         assert(filename);
 724         assert(lvalue);
 725         assert(rvalue);
 726         assert(data);
 727
 728         if (isempty(rvalue)) {
 729                 c->oom_score_adjust_set = false;
 730                 return 0;
 731         }
 732
 733         r = parse_oom_score_adjust(rvalue, &oa);
 734         if (r < 0) {
 735                 if (r == -ERANGE)
 736                         log_syntax(unit, LOG_WARNING, filename, line, r, "OOM score adjust value out of range, ignoring: %s", rvalue);
 737                 else
 738                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse the OOM score adjust value '%s', ignoring: %m", rvalue);
 739                 return 0;
 740         }
 741
 742         c->oom_score_adjust = oa;
 743         c->oom_score_adjust_set = true;
 744
 745         return 0;
 746 }
 747
 748 int config_parse_exec_coredump_filter(
 749                 const char* unit,
 750                 const char *filename,
 751                 unsigned line,
 752                 const char *section,
 753                 unsigned section_line,
 754                 const char *lvalue,
 755                 int ltype,
 756                 const char *rvalue,
 757                 void *data,
 758                 void *userdata) {
 759
 760         ExecContext *c = data;
 761         int r;
 762
 763         assert(filename);
 764         assert(lvalue);
 765         assert(rvalue);
 766         assert(data);
 767
 768         if (isempty(rvalue)) {
 769                 c->coredump_filter = 0;
 770                 c->coredump_filter_set = false;
 771                 return 0;
 772         }
 773
 774         uint64_t f;
 775         r = coredump_filter_mask_from_string(rvalue, &f);
 776         if (r < 0) {
 777                 log_syntax(unit, LOG_WARNING, filename, line, r,
 778                            "Failed to parse the CoredumpFilter=%s, ignoring: %m", rvalue);
 779                 return 0;
 780         }
 781
 782         c->coredump_filter |= f;
 783         c->oom_score_adjust_set = true;
 784         return 0;
 785 }
 786
 787 int config_parse_kill_mode(
 788                 const char* unit,
 789                 const char *filename,
 790                 unsigned line,
 791                 const char *section,
 792                 unsigned section_line,
 793                 const char *lvalue,
 794                 int ltype,
 795                 const char *rvalue,
 796                 void *data,
 797                 void *userdata) {
 798
 799         KillMode *k = data, m;
 800
 801         assert(filename);
 802         assert(lvalue);
 803         assert(rvalue);
 804         assert(data);
 805
 806         if (isempty(rvalue)) {
 807                 *k = KILL_CONTROL_GROUP;
 808                 return 0;
 809         }
 810
 811         m = kill_mode_from_string(rvalue);
 812         if (m < 0) {
 813                 log_syntax(unit, LOG_WARNING, filename, line, m,
 814                            "Failed to parse kill mode specification, ignoring: %s", rvalue);
 815                 return 0;
 816         }
 817
 818         if (m == KILL_NONE)
 819                 log_syntax(unit, LOG_WARNING, filename, line, 0,
 820                            "Unit configured to use KillMode=none. "
 821                            "This is unsafe, as it disables systemd's process lifecycle management for the service. "
 822                            "Please update your service to use a safer KillMode=, such as 'mixed' or 'control-group'. "
 823                            "Support for KillMode=none is deprecated and will eventually be removed.");
 824
 825         *k = m;
 826         return 0;
 827 }
 828
 829 int config_parse_exec(
 830                 const char *unit,
 831                 const char *filename,
 832                 unsigned line,
 833                 const char *section,
 834                 unsigned section_line,
 835                 const char *lvalue,
 836                 int ltype,
 837                 const char *rvalue,
 838                 void *data,
 839                 void *userdata) {
 840
 841         ExecCommand **e = data;
 842         const Unit *u = userdata;
 843         const char *p;
 844         bool semicolon;
 845         int r;
 846
 847         assert(filename);
 848         assert(lvalue);
 849         assert(rvalue);
 850         assert(e);
 851
 852         e += ltype;
 853
 854         if (isempty(rvalue)) {
 855                 /* An empty assignment resets the list */
 856                 *e = exec_command_free_list(*e);
 857                 return 0;
 858         }
 859
 860         p = rvalue;
 861         do {
 862                 _cleanup_free_ char *path = NULL, *firstword = NULL;
 863                 ExecCommandFlags flags = 0;
 864                 bool ignore = false, separate_argv0 = false;
 865                 _cleanup_free_ ExecCommand *nce = NULL;
 866                 _cleanup_strv_free_ char **n = NULL;
 867                 size_t nlen = 0;
 868                 const char *f;
 869
 870                 semicolon = false;
 871
 872                 r = extract_first_word_and_warn(&p, &firstword, NULL, EXTRACT_UNQUOTE|EXTRACT_CUNESCAPE, unit, filename, line, rvalue);
 873                 if (r <= 0)
 874                         return 0;
 875
 876                 /* A lone ";" is a separator. Let's make sure we don't treat it as an executable name. */
 877                 if (streq(firstword, ";")) {
 878                         semicolon = true;
 879                         continue;
 880                 }
 881
 882                 f = firstword;
 883                 for (;;) {
 884                         /* We accept an absolute path as first argument.  If it's prefixed with - and the path doesn't
 885                          * exist, we ignore it instead of erroring out; if it's prefixed with @, we allow overriding of
 886                          * argv[0]; if it's prefixed with :, we will not do environment variable substitution;
 887                          * if it's prefixed with +, it will be run with full privileges and no sandboxing; if
 888                          * it's prefixed with '!' we apply sandboxing, but do not change user/group credentials; if
 889                          * it's prefixed with '!!', then we apply user/group credentials if the kernel supports ambient
 890                          * capabilities -- if it doesn't we don't apply the credentials themselves, but do apply most
 891                          * other sandboxing, with some special exceptions for changing UID.
 892                          *
 893                          * The idea is that '!!' may be used to write services that can take benefit of systemd's
 894                          * UID/GID dropping if the kernel supports ambient creds, but provide an automatic fallback to
 895                          * privilege dropping within the daemon if the kernel does not offer that. */
 896
 897                         if (*f == '-' && !(flags & EXEC_COMMAND_IGNORE_FAILURE)) {
 898                                 flags |= EXEC_COMMAND_IGNORE_FAILURE;
 899                                 ignore = true;
 900                         } else if (*f == '@' && !separate_argv0)
 901                                 separate_argv0 = true;
 902                         else if (*f == ':' && !(flags & EXEC_COMMAND_NO_ENV_EXPAND))
 903                                 flags |= EXEC_COMMAND_NO_ENV_EXPAND;
 904                         else if (*f == '+' && !(flags & (EXEC_COMMAND_FULLY_PRIVILEGED|EXEC_COMMAND_NO_SETUID|EXEC_COMMAND_AMBIENT_MAGIC)))
 905                                 flags |= EXEC_COMMAND_FULLY_PRIVILEGED;
 906                         else if (*f == '!' && !(flags & (EXEC_COMMAND_FULLY_PRIVILEGED|EXEC_COMMAND_NO_SETUID|EXEC_COMMAND_AMBIENT_MAGIC)))
 907                                 flags |= EXEC_COMMAND_NO_SETUID;
 908                         else if (*f == '!' && !(flags & (EXEC_COMMAND_FULLY_PRIVILEGED|EXEC_COMMAND_AMBIENT_MAGIC))) {
 909                                 flags &= ~EXEC_COMMAND_NO_SETUID;
 910                                 flags |= EXEC_COMMAND_AMBIENT_MAGIC;
 911                         } else
 912                                 break;
 913                         f++;
 914                 }
 915
 916                 r = unit_path_printf(u, f, &path);
 917                 if (r < 0) {
 918                         log_syntax(unit, ignore ? LOG_WARNING : LOG_ERR, filename, line, r,
 919                                    "Failed to resolve unit specifiers in '%s'%s: %m",
 920                                    f, ignore ? ", ignoring" : "");
 921                         return ignore ? 0 : -ENOEXEC;
 922                 }
 923
 924                 if (isempty(path)) {
 925                         /* First word is either "-" or "@" with no command. */
 926                         log_syntax(unit, ignore ? LOG_WARNING : LOG_ERR, filename, line, 0,
 927                                    "Empty path in command line%s: '%s'",
 928                                    ignore ? ", ignoring" : "", rvalue);
 929                         return ignore ? 0 : -ENOEXEC;
 930                 }
 931                 if (!string_is_safe(path)) {
 932                         log_syntax(unit, ignore ? LOG_WARNING : LOG_ERR, filename, line, 0,
 933                                    "Executable name contains special characters%s: %s",
 934                                    ignore ? ", ignoring" : "", path);
 935                         return ignore ? 0 : -ENOEXEC;
 936                 }
 937                 if (endswith(path, "/")) {
 938                         log_syntax(unit, ignore ? LOG_WARNING : LOG_ERR, filename, line, 0,
 939                                    "Executable path specifies a directory%s: %s",
 940                                    ignore ? ", ignoring" : "", path);
 941                         return ignore ? 0 : -ENOEXEC;
 942                 }
 943
 944                 if (!(path_is_absolute(path) ? path_is_valid(path) : filename_is_valid(path))) {
 945                         log_syntax(unit, ignore ? LOG_WARNING : LOG_ERR, filename, line, 0,
 946                                    "Neither a valid executable name nor an absolute path%s: %s",
 947                                    ignore ? ", ignoring" : "", path);
 948                         return ignore ? 0 : -ENOEXEC;
 949                 }
 950
 951                 if (!separate_argv0) {
 952                         char *w = NULL;
 953
 954                         if (!GREEDY_REALLOC0(n, nlen + 2))
 955                                 return log_oom();
 956
 957                         w = strdup(path);
 958                         if (!w)
 959                                 return log_oom();
 960                         n[nlen++] = w;
 961                         n[nlen] = NULL;
 962                 }
 963
 964                 path_simplify(path);
 965
 966                 while (!isempty(p)) {
 967                         _cleanup_free_ char *word = NULL, *resolved = NULL;
 968
 969                         /* Check explicitly for an unquoted semicolon as
 970                          * command separator token.  */
 971                         if (p[0] == ';' && (!p[1] || strchr(WHITESPACE, p[1]))) {
 972                                 p++;
 973                                 p += strspn(p, WHITESPACE);
 974                                 semicolon = true;
 975                                 break;
 976                         }
 977
 978                         /* Check for \; explicitly, to not confuse it with \\; or "\;" or "\\;" etc.
 979                          * extract_first_word() would return the same for all of those.  */
 980                         if (p[0] == '\\' && p[1] == ';' && (!p[2] || strchr(WHITESPACE, p[2]))) {
 981                                 char *w;
 982
 983                                 p += 2;
 984                                 p += strspn(p, WHITESPACE);
 985
 986                                 if (!GREEDY_REALLOC0(n, nlen + 2))
 987                                         return log_oom();
 988
 989                                 w = strdup(";");
 990                                 if (!w)
 991                                         return log_oom();
 992                                 n[nlen++] = w;
 993                                 n[nlen] = NULL;
 994                                 continue;
 995                         }
 996
 997                         r = extract_first_word_and_warn(&p, &word, NULL, EXTRACT_UNQUOTE|EXTRACT_CUNESCAPE, unit, filename, line, rvalue);
 998                         if (r == 0)
 999                                 break;
1000                         if (r < 0)
1001                                 return ignore ? 0 : -ENOEXEC;
1002
1003                         r = unit_full_printf(u, word, &resolved);
1004                         if (r < 0) {
1005                                 log_syntax(unit, ignore ? LOG_WARNING : LOG_ERR, filename, line, r,
1006                                            "Failed to resolve unit specifiers in %s%s: %m",
1007                                            word, ignore ? ", ignoring" : "");
1008                                 return ignore ? 0 : -ENOEXEC;
1009                         }
1010
1011                         if (!GREEDY_REALLOC(n, nlen + 2))
1012                                 return log_oom();
1013
1014                         n[nlen++] = TAKE_PTR(resolved);
1015                         n[nlen] = NULL;
1016                 }
1017
1018                 if (!n || !n[0]) {
1019                         log_syntax(unit, ignore ? LOG_WARNING : LOG_ERR, filename, line, 0,
1020                                    "Empty executable name or zeroeth argument%s: %s",
1021                                    ignore ? ", ignoring" : "", rvalue);
1022                         return ignore ? 0 : -ENOEXEC;
1023                 }
1024
1025                 nce = new0(ExecCommand, 1);
1026                 if (!nce)
1027                         return log_oom();
1028
1029                 nce->argv = TAKE_PTR(n);
1030                 nce->path = TAKE_PTR(path);
1031                 nce->flags = flags;
1032
1033                 exec_command_append_list(e, nce);
1034
1035                 /* Do not _cleanup_free_ these. */
1036                 nce = NULL;
1037
1038                 rvalue = p;
1039         } while (semicolon);
1040
1041         return 0;
1042 }
1043
1044 int config_parse_socket_bindtodevice(
1045                 const char* unit,
1046                 const char *filename,
1047                 unsigned line,
1048                 const char *section,
1049                 unsigned section_line,
1050                 const char *lvalue,
1051                 int ltype,
1052                 const char *rvalue,
1053                 void *data,
1054                 void *userdata) {
1055
1056         Socket *s = data;
1057
1058         assert(filename);
1059         assert(lvalue);
1060         assert(rvalue);
1061         assert(data);
1062
1063         if (isempty(rvalue) || streq(rvalue, "*")) {
1064                 s->bind_to_device = mfree(s->bind_to_device);
1065                 return 0;
1066         }
1067
1068         if (!ifname_valid(rvalue)) {
1069                 log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid interface name, ignoring: %s", rvalue);
1070                 return 0;
1071         }
1072
1073         return free_and_strdup_warn(&s->bind_to_device, rvalue);
1074 }
1075
1076 int config_parse_exec_input(
1077                 const char *unit,
1078                 const char *filename,
1079                 unsigned line,
1080                 const char *section,
1081                 unsigned section_line,
1082                 const char *lvalue,
1083                 int ltype,
1084                 const char *rvalue,
1085                 void *data,
1086                 void *userdata) {
1087
1088         ExecContext *c = data;
1089         const Unit *u = userdata;
1090         const char *n;
1091         ExecInput ei;
1092         int r;
1093
1094         assert(data);
1095         assert(filename);
1096         assert(line);
1097         assert(rvalue);
1098
1099         n = startswith(rvalue, "fd:");
1100         if (n) {
1101                 _cleanup_free_ char *resolved = NULL;
1102
1103                 r = unit_fd_printf(u, n, &resolved);
1104                 if (r < 0) {
1105                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", n);
1106                         return 0;
1107                 }
1108
1109                 if (isempty(resolved))
1110                         resolved = mfree(resolved);
1111                 else if (!fdname_is_valid(resolved)) {
1112                         log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid file descriptor name, ignoring: %s", resolved);
1113                         return 0;
1114                 }
1115
1116                 free_and_replace(c->stdio_fdname[STDIN_FILENO], resolved);
1117
1118                 ei = EXEC_INPUT_NAMED_FD;
1119
1120         } else if ((n = startswith(rvalue, "file:"))) {
1121                 _cleanup_free_ char *resolved = NULL;
1122
1123                 r = unit_path_printf(u, n, &resolved);
1124                 if (r < 0) {
1125                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", n);
1126                         return 0;
1127                 }
1128
1129                 r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE | PATH_CHECK_FATAL, unit, filename, line, lvalue);
1130                 if (r < 0)
1131                         return 0;
1132
1133                 free_and_replace(c->stdio_file[STDIN_FILENO], resolved);
1134
1135                 ei = EXEC_INPUT_FILE;
1136
1137         } else {
1138                 ei = exec_input_from_string(rvalue);
1139                 if (ei < 0) {
1140                         log_syntax(unit, LOG_WARNING, filename, line, ei, "Failed to parse input specifier, ignoring: %s", rvalue);
1141                         return 0;
1142                 }
1143         }
1144
1145         c->std_input = ei;
1146         return 0;
1147 }
1148
1149 int config_parse_exec_input_text(
1150                 const char *unit,
1151                 const char *filename,
1152                 unsigned line,
1153                 const char *section,
1154                 unsigned section_line,
1155                 const char *lvalue,
1156                 int ltype,
1157                 const char *rvalue,
1158                 void *data,
1159                 void *userdata) {
1160
1161         _cleanup_free_ char *unescaped = NULL, *resolved = NULL;
1162         ExecContext *c = data;
1163         const Unit *u = userdata;
1164         int r;
1165
1166         assert(data);
1167         assert(filename);
1168         assert(line);
1169         assert(rvalue);
1170
1171         if (isempty(rvalue)) {
1172                 /* Reset if the empty string is assigned */
1173                 c->stdin_data = mfree(c->stdin_data);
1174                 c->stdin_data_size = 0;
1175                 return 0;
1176         }
1177
1178         ssize_t l = cunescape(rvalue, 0, &unescaped);
1179         if (l < 0) {
1180                 log_syntax(unit, LOG_WARNING, filename, line, l,
1181                            "Failed to decode C escaped text '%s', ignoring: %m", rvalue);
1182                 return 0;
1183         }
1184
1185         r = unit_full_printf_full(u, unescaped, EXEC_STDIN_DATA_MAX, &resolved);
1186         if (r < 0) {
1187                 log_syntax(unit, LOG_WARNING, filename, line, r,
1188                            "Failed to resolve unit specifiers in '%s', ignoring: %m", unescaped);
1189                 return 0;
1190         }
1191
1192         size_t sz = strlen(resolved);
1193         if (c->stdin_data_size + sz + 1 < c->stdin_data_size || /* check for overflow */
1194             c->stdin_data_size + sz + 1 > EXEC_STDIN_DATA_MAX) {
1195                 log_syntax(unit, LOG_WARNING, filename, line, 0,
1196                            "Standard input data too large (%zu), maximum of %zu permitted, ignoring.",
1197                            c->stdin_data_size + sz, (size_t) EXEC_STDIN_DATA_MAX);
1198                 return 0;
1199         }
1200
1201         void *p = realloc(c->stdin_data, c->stdin_data_size + sz + 1);
1202         if (!p)
1203                 return log_oom();
1204
1205         *((char*) mempcpy((char*) p + c->stdin_data_size, resolved, sz)) = '\n';
1206
1207         c->stdin_data = p;
1208         c->stdin_data_size += sz + 1;
1209
1210         return 0;
1211 }
1212
1213 int config_parse_exec_input_data(
1214                 const char *unit,
1215                 const char *filename,
1216                 unsigned line,
1217                 const char *section,
1218                 unsigned section_line,
1219                 const char *lvalue,
1220                 int ltype,
1221                 const char *rvalue,
1222                 void *data,
1223                 void *userdata) {
1224
1225         _cleanup_free_ void *p = NULL;
1226         ExecContext *c = data;
1227         size_t sz;
1228         void *q;
1229         int r;
1230
1231         assert(data);
1232         assert(filename);
1233         assert(line);
1234         assert(rvalue);
1235
1236         if (isempty(rvalue)) {
1237                 /* Reset if the empty string is assigned */
1238                 c->stdin_data = mfree(c->stdin_data);
1239                 c->stdin_data_size = 0;
1240                 return 0;
1241         }
1242
1243         r = unbase64mem(rvalue, SIZE_MAX, &p, &sz);
1244         if (r < 0) {
1245                 log_syntax(unit, LOG_WARNING, filename, line, r,
1246                            "Failed to decode base64 data, ignoring: %s", rvalue);
1247                 return 0;
1248         }
1249
1250         assert(sz > 0);
1251
1252         if (c->stdin_data_size + sz < c->stdin_data_size || /* check for overflow */
1253             c->stdin_data_size + sz > EXEC_STDIN_DATA_MAX) {
1254                 log_syntax(unit, LOG_WARNING, filename, line, 0,
1255                            "Standard input data too large (%zu), maximum of %zu permitted, ignoring.",
1256                            c->stdin_data_size + sz, (size_t) EXEC_STDIN_DATA_MAX);
1257                 return 0;
1258         }
1259
1260         q = realloc(c->stdin_data, c->stdin_data_size + sz);
1261         if (!q)
1262                 return log_oom();
1263
1264         memcpy((uint8_t*) q + c->stdin_data_size, p, sz);
1265
1266         c->stdin_data = q;
1267         c->stdin_data_size += sz;
1268
1269         return 0;
1270 }
1271
1272 int config_parse_exec_output(
1273                 const char *unit,
1274                 const char *filename,
1275                 unsigned line,
1276                 const char *section,
1277                 unsigned section_line,
1278                 const char *lvalue,
1279                 int ltype,
1280                 const char *rvalue,
1281                 void *data,
1282                 void *userdata) {
1283
1284         _cleanup_free_ char *resolved = NULL;
1285         const char *n;
1286         ExecContext *c = data;
1287         const Unit *u = userdata;
1288         bool obsolete = false;
1289         ExecOutput eo;
1290         int r;
1291
1292         assert(data);
1293         assert(filename);
1294         assert(line);
1295         assert(lvalue);
1296         assert(rvalue);
1297
1298         n = startswith(rvalue, "fd:");
1299         if (n) {
1300                 r = unit_fd_printf(u, n, &resolved);
1301                 if (r < 0) {
1302                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s: %m", n);
1303                         return 0;
1304                 }
1305
1306                 if (isempty(resolved))
1307                         resolved = mfree(resolved);
1308                 else if (!fdname_is_valid(resolved)) {
1309                         log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid file descriptor name, ignoring: %s", resolved);
1310                         return 0;
1311                 }
1312
1313                 eo = EXEC_OUTPUT_NAMED_FD;
1314
1315         } else if (streq(rvalue, "syslog")) {
1316                 eo = EXEC_OUTPUT_JOURNAL;
1317                 obsolete = true;
1318
1319         } else if (streq(rvalue, "syslog+console")) {
1320                 eo = EXEC_OUTPUT_JOURNAL_AND_CONSOLE;
1321                 obsolete = true;
1322
1323         } else if ((n = startswith(rvalue, "file:"))) {
1324
1325                 r = unit_path_printf(u, n, &resolved);
1326                 if (r < 0) {
1327                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", n);
1328                         return 0;
1329                 }
1330
1331                 r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE | PATH_CHECK_FATAL, unit, filename, line, lvalue);
1332                 if (r < 0)
1333                         return 0;
1334
1335                 eo = EXEC_OUTPUT_FILE;
1336
1337         } else if ((n = startswith(rvalue, "append:"))) {
1338
1339                 r = unit_path_printf(u, n, &resolved);
1340                 if (r < 0) {
1341                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", n);
1342                         return 0;
1343                 }
1344
1345                 r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE | PATH_CHECK_FATAL, unit, filename, line, lvalue);
1346                 if (r < 0)
1347                         return 0;
1348
1349                 eo = EXEC_OUTPUT_FILE_APPEND;
1350
1351         } else if ((n = startswith(rvalue, "truncate:"))) {
1352
1353                 r = unit_path_printf(u, n, &resolved);
1354                 if (r < 0) {
1355                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", n);
1356                         return 0;
1357                 }
1358
1359                 r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE | PATH_CHECK_FATAL, unit, filename, line, lvalue);
1360                 if (r < 0)
1361                         return 0;
1362
1363                 eo = EXEC_OUTPUT_FILE_TRUNCATE;
1364         } else {
1365                 eo = exec_output_from_string(rvalue);
1366                 if (eo < 0) {
1367                         log_syntax(unit, LOG_WARNING, filename, line, eo, "Failed to parse output specifier, ignoring: %s", rvalue);
1368                         return 0;
1369                 }
1370         }
1371
1372         if (obsolete)
1373                 log_syntax(unit, LOG_NOTICE, filename, line, 0,
1374                            "Standard output type %s is obsolete, automatically updating to %s. Please update your unit file, and consider removing the setting altogether.",
1375                            rvalue, exec_output_to_string(eo));
1376
1377         if (streq(lvalue, "StandardOutput")) {
1378                 if (eo == EXEC_OUTPUT_NAMED_FD)
1379                         free_and_replace(c->stdio_fdname[STDOUT_FILENO], resolved);
1380                 else
1381                         free_and_replace(c->stdio_file[STDOUT_FILENO], resolved);
1382
1383                 c->std_output = eo;
1384
1385         } else {
1386                 assert(streq(lvalue, "StandardError"));
1387
1388                 if (eo == EXEC_OUTPUT_NAMED_FD)
1389                         free_and_replace(c->stdio_fdname[STDERR_FILENO], resolved);
1390                 else
1391                         free_and_replace(c->stdio_file[STDERR_FILENO], resolved);
1392
1393                 c->std_error = eo;
1394         }
1395
1396         return 0;
1397 }
1398
1399 int config_parse_exec_io_class(const char *unit,
1400                                const char *filename,
1401                                unsigned line,
1402                                const char *section,
1403                                unsigned section_line,
1404                                const char *lvalue,
1405                                int ltype,
1406                                const char *rvalue,
1407                                void *data,
1408                                void *userdata) {
1409
1410         ExecContext *c = data;
1411         int x;
1412
1413         assert(filename);
1414         assert(lvalue);
1415         assert(rvalue);
1416         assert(data);
1417
1418         if (isempty(rvalue)) {
1419                 c->ioprio_set = false;
1420                 c->ioprio = IOPRIO_DEFAULT_CLASS_AND_PRIO;
1421                 return 0;
1422         }
1423
1424         x = ioprio_class_from_string(rvalue);
1425         if (x < 0) {
1426                 log_syntax(unit, LOG_WARNING, filename, line, x, "Failed to parse IO scheduling class, ignoring: %s", rvalue);
1427                 return 0;
1428         }
1429
1430         c->ioprio = ioprio_normalize(ioprio_prio_value(x, ioprio_prio_data(c->ioprio)));
1431         c->ioprio_set = true;
1432
1433         return 0;
1434 }
1435
1436 int config_parse_exec_io_priority(const char *unit,
1437                                   const char *filename,
1438                                   unsigned line,
1439                                   const char *section,
1440                                   unsigned section_line,
1441                                   const char *lvalue,
1442                                   int ltype,
1443                                   const char *rvalue,
1444                                   void *data,
1445                                   void *userdata) {
1446
1447         ExecContext *c = data;
1448         int i, r;
1449
1450         assert(filename);
1451         assert(lvalue);
1452         assert(rvalue);
1453         assert(data);
1454
1455         if (isempty(rvalue)) {
1456                 c->ioprio_set = false;
1457                 c->ioprio = IOPRIO_DEFAULT_CLASS_AND_PRIO;
1458                 return 0;
1459         }
1460
1461         r = ioprio_parse_priority(rvalue, &i);
1462         if (r < 0) {
1463                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse IO priority, ignoring: %s", rvalue);
1464                 return 0;
1465         }
1466
1467         c->ioprio = ioprio_normalize(ioprio_prio_value(ioprio_prio_class(c->ioprio), i));
1468         c->ioprio_set = true;
1469
1470         return 0;
1471 }
1472
1473 int config_parse_exec_cpu_sched_policy(const char *unit,
1474                                        const char *filename,
1475                                        unsigned line,
1476                                        const char *section,
1477                                        unsigned section_line,
1478                                        const char *lvalue,
1479                                        int ltype,
1480                                        const char *rvalue,
1481                                        void *data,
1482                                        void *userdata) {
1483
1484         ExecContext *c = data;
1485         int x;
1486
1487         assert(filename);
1488         assert(lvalue);
1489         assert(rvalue);
1490         assert(data);
1491
1492         if (isempty(rvalue)) {
1493                 c->cpu_sched_set = false;
1494                 c->cpu_sched_policy = SCHED_OTHER;
1495                 c->cpu_sched_priority = 0;
1496                 return 0;
1497         }
1498
1499         x = sched_policy_from_string(rvalue);
1500         if (x < 0) {
1501                 log_syntax(unit, LOG_WARNING, filename, line, x, "Failed to parse CPU scheduling policy, ignoring: %s", rvalue);
1502                 return 0;
1503         }
1504
1505         c->cpu_sched_policy = x;
1506         /* Moving to or from real-time policy? We need to adjust the priority */
1507         c->cpu_sched_priority = CLAMP(c->cpu_sched_priority, sched_get_priority_min(x), sched_get_priority_max(x));
1508         c->cpu_sched_set = true;
1509
1510         return 0;
1511 }
1512
1513 int config_parse_exec_mount_apivfs(const char *unit,
1514                                    const char *filename,
1515                                    unsigned line,
1516                                    const char *section,
1517                                    unsigned section_line,
1518                                    const char *lvalue,
1519                                    int ltype,
1520                                    const char *rvalue,
1521                                    void *data,
1522                                    void *userdata) {
1523
1524         ExecContext *c = data;
1525         int k;
1526
1527         assert(filename);
1528         assert(lvalue);
1529         assert(rvalue);
1530         assert(data);
1531
1532         if (isempty(rvalue)) {
1533                 c->mount_apivfs_set = false;
1534                 c->mount_apivfs = false;
1535                 return 0;
1536         }
1537
1538         k = parse_boolean(rvalue);
1539         if (k < 0) {
1540                 log_syntax(unit, LOG_WARNING, filename, line, k,
1541                            "Failed to parse boolean value, ignoring: %s",
1542                            rvalue);
1543                 return 0;
1544         }
1545
1546         c->mount_apivfs_set = true;
1547         c->mount_apivfs = k;
1548         return 0;
1549 }
1550
1551 int config_parse_numa_mask(const char *unit,
1552                            const char *filename,
1553                            unsigned line,
1554                            const char *section,
1555                            unsigned section_line,
1556                            const char *lvalue,
1557                            int ltype,
1558                            const char *rvalue,
1559                            void *data,
1560                            void *userdata) {
1561         int r;
1562         NUMAPolicy *p = data;
1563
1564         assert(filename);
1565         assert(lvalue);
1566         assert(rvalue);
1567         assert(data);
1568
1569         if (streq(rvalue, "all")) {
1570                 r = numa_mask_add_all(&p->nodes);
1571                 if (r < 0)
1572                         log_syntax(unit, LOG_WARNING, filename, line, r,
1573                                    "Failed to create NUMA mask representing \"all\" NUMA nodes, ignoring: %m");
1574         } else {
1575                 r = parse_cpu_set_extend(rvalue, &p->nodes, true, unit, filename, line, lvalue);
1576                 if (r < 0)
1577                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse NUMA node mask, ignoring: %s", rvalue);
1578         }
1579
1580         return 0;
1581 }
1582
1583 int config_parse_exec_cpu_sched_prio(const char *unit,
1584                                      const char *filename,
1585                                      unsigned line,
1586                                      const char *section,
1587                                      unsigned section_line,
1588                                      const char *lvalue,
1589                                      int ltype,
1590                                      const char *rvalue,
1591                                      void *data,
1592                                      void *userdata) {
1593
1594         ExecContext *c = data;
1595         int i, min, max, r;
1596
1597         assert(filename);
1598         assert(lvalue);
1599         assert(rvalue);
1600         assert(data);
1601
1602         r = safe_atoi(rvalue, &i);
1603         if (r < 0) {
1604                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse CPU scheduling priority, ignoring: %s", rvalue);
1605                 return 0;
1606         }
1607
1608         /* On Linux RR/FIFO range from 1 to 99 and OTHER/BATCH may only be 0 */
1609         min = sched_get_priority_min(c->cpu_sched_policy);
1610         max = sched_get_priority_max(c->cpu_sched_policy);
1611
1612         if (i < min || i > max) {
1613                 log_syntax(unit, LOG_WARNING, filename, line, 0, "CPU scheduling priority is out of range, ignoring: %s", rvalue);
1614                 return 0;
1615         }
1616
1617         c->cpu_sched_priority = i;
1618         c->cpu_sched_set = true;
1619
1620         return 0;
1621 }
1622
1623 int config_parse_root_image_options(
1624                 const char *unit,
1625                 const char *filename,
1626                 unsigned line,
1627                 const char *section,
1628                 unsigned section_line,
1629                 const char *lvalue,
1630                 int ltype,
1631                 const char *rvalue,
1632                 void *data,
1633                 void *userdata) {
1634
1635         _cleanup_(mount_options_free_allp) MountOptions *options = NULL;
1636         _cleanup_strv_free_ char **l = NULL;
1637         ExecContext *c = data;
1638         const Unit *u = userdata;
1639         int r;
1640
1641         assert(filename);
1642         assert(lvalue);
1643         assert(rvalue);
1644         assert(data);
1645
1646         if (isempty(rvalue)) {
1647                 c->root_image_options = mount_options_free_all(c->root_image_options);
1648                 return 0;
1649         }
1650
1651         r = strv_split_colon_pairs(&l, rvalue);
1652         if (r == -ENOMEM)
1653                 return log_oom();
1654         if (r < 0) {
1655                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s, ignoring: %s", lvalue, rvalue);
1656                 return 0;
1657         }
1658
1659         STRV_FOREACH_PAIR(first, second, l) {
1660                 MountOptions *o = NULL;
1661                 _cleanup_free_ char *mount_options_resolved = NULL;
1662                 const char *mount_options = NULL, *partition = "root";
1663                 PartitionDesignator partition_designator;
1664
1665                 /* Format is either 'root:foo' or 'foo' (root is implied) */
1666                 if (!isempty(*second)) {
1667                         partition = *first;
1668                         mount_options = *second;
1669                 } else
1670                         mount_options = *first;
1671
1672                 partition_designator = partition_designator_from_string(partition);
1673                 if (partition_designator < 0) {
1674                         log_syntax(unit, LOG_WARNING, filename, line, partition_designator,
1675                                    "Invalid partition name %s, ignoring", partition);
1676                         continue;
1677                 }
1678                 r = unit_full_printf(u, mount_options, &mount_options_resolved);
1679                 if (r < 0) {
1680                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", mount_options);
1681                         continue;
1682                 }
1683
1684                 o = new(MountOptions, 1);
1685                 if (!o)
1686                         return log_oom();
1687                 *o = (MountOptions) {
1688                         .partition_designator = partition_designator,
1689                         .options = TAKE_PTR(mount_options_resolved),
1690                 };
1691                 LIST_APPEND(mount_options, options, TAKE_PTR(o));
1692         }
1693
1694         if (options)
1695                 LIST_JOIN(mount_options, c->root_image_options, options);
1696         else
1697                 /* empty spaces/separators only */
1698                 c->root_image_options = mount_options_free_all(c->root_image_options);
1699
1700         return 0;
1701 }
1702
1703 int config_parse_exec_root_hash(
1704                 const char *unit,
1705                 const char *filename,
1706                 unsigned line,
1707                 const char *section,
1708                 unsigned section_line,
1709                 const char *lvalue,
1710                 int ltype,
1711                 const char *rvalue,
1712                 void *data,
1713                 void *userdata) {
1714
1715         _cleanup_free_ void *roothash_decoded = NULL;
1716         ExecContext *c = data;
1717         size_t roothash_decoded_size = 0;
1718         int r;
1719
1720         assert(data);
1721         assert(filename);
1722         assert(line);
1723         assert(rvalue);
1724
1725         if (isempty(rvalue)) {
1726                 /* Reset if the empty string is assigned */
1727                 c->root_hash_path = mfree(c->root_hash_path);
1728                 c->root_hash = mfree(c->root_hash);
1729                 c->root_hash_size = 0;
1730                 return 0;
1731         }
1732
1733         if (path_is_absolute(rvalue)) {
1734                 /* We have the path to a roothash to load and decode, eg: RootHash=/foo/bar.roothash */
1735                 _cleanup_free_ char *p = NULL;
1736
1737                 p = strdup(rvalue);
1738                 if (!p)
1739                         return -ENOMEM;
1740
1741                 free_and_replace(c->root_hash_path, p);
1742                 c->root_hash = mfree(c->root_hash);
1743                 c->root_hash_size = 0;
1744                 return 0;
1745         }
1746
1747         /* We have a roothash to decode, eg: RootHash=012345789abcdef */
1748         r = unhexmem(rvalue, strlen(rvalue), &roothash_decoded, &roothash_decoded_size);
1749         if (r < 0) {
1750                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to decode RootHash=, ignoring: %s", rvalue);
1751                 return 0;
1752         }
1753         if (roothash_decoded_size < sizeof(sd_id128_t)) {
1754                 log_syntax(unit, LOG_WARNING, filename, line, 0, "RootHash= is too short, ignoring: %s", rvalue);
1755                 return 0;
1756         }
1757
1758         free_and_replace(c->root_hash, roothash_decoded);
1759         c->root_hash_size = roothash_decoded_size;
1760         c->root_hash_path = mfree(c->root_hash_path);
1761
1762         return 0;
1763 }
1764
1765 int config_parse_exec_root_hash_sig(
1766                 const char *unit,
1767                 const char *filename,
1768                 unsigned line,
1769                 const char *section,
1770                 unsigned section_line,
1771                 const char *lvalue,
1772                 int ltype,
1773                 const char *rvalue,
1774                 void *data,
1775                 void *userdata) {
1776
1777         _cleanup_free_ void *roothash_sig_decoded = NULL;
1778         char *value;
1779         ExecContext *c = data;
1780         size_t roothash_sig_decoded_size = 0;
1781         int r;
1782
1783         assert(data);
1784         assert(filename);
1785         assert(line);
1786         assert(rvalue);
1787
1788         if (isempty(rvalue)) {
1789                 /* Reset if the empty string is assigned */
1790                 c->root_hash_sig_path = mfree(c->root_hash_sig_path);
1791                 c->root_hash_sig = mfree(c->root_hash_sig);
1792                 c->root_hash_sig_size = 0;
1793                 return 0;
1794         }
1795
1796         if (path_is_absolute(rvalue)) {
1797                 /* We have the path to a roothash signature to load and decode, eg: RootHashSignature=/foo/bar.roothash.p7s */
1798                 _cleanup_free_ char *p = NULL;
1799
1800                 p = strdup(rvalue);
1801                 if (!p)
1802                         return log_oom();
1803
1804                 free_and_replace(c->root_hash_sig_path, p);
1805                 c->root_hash_sig = mfree(c->root_hash_sig);
1806                 c->root_hash_sig_size = 0;
1807                 return 0;
1808         }
1809
1810         if (!(value = startswith(rvalue, "base64:"))) {
1811                 log_syntax(unit, LOG_WARNING, filename, line, 0,
1812                            "Failed to decode RootHashSignature=, not a path but doesn't start with 'base64:', ignoring: %s", rvalue);
1813                 return 0;
1814         }
1815
1816         /* We have a roothash signature to decode, eg: RootHashSignature=base64:012345789abcdef */
1817         r = unbase64mem(value, strlen(value), &roothash_sig_decoded, &roothash_sig_decoded_size);
1818         if (r < 0) {
1819                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to decode RootHashSignature=, ignoring: %s", rvalue);
1820                 return 0;
1821         }
1822
1823         free_and_replace(c->root_hash_sig, roothash_sig_decoded);
1824         c->root_hash_sig_size = roothash_sig_decoded_size;
1825         c->root_hash_sig_path = mfree(c->root_hash_sig_path);
1826
1827         return 0;
1828 }
1829
1830 int config_parse_exec_cpu_affinity(
1831                 const char *unit,
1832                 const char *filename,
1833                 unsigned line,
1834                 const char *section,
1835                 unsigned section_line,
1836                 const char *lvalue,
1837                 int ltype,
1838                 const char *rvalue,
1839                 void *data,
1840                 void *userdata) {
1841
1842         ExecContext *c = data;
1843         const Unit *u = userdata;
1844         _cleanup_free_ char *k = NULL;
1845         int r;
1846
1847         assert(filename);
1848         assert(lvalue);
1849         assert(rvalue);
1850         assert(data);
1851
1852         if (streq(rvalue, "numa")) {
1853                 c->cpu_affinity_from_numa = true;
1854                 cpu_set_reset(&c->cpu_set);
1855
1856                 return 0;
1857         }
1858
1859         r = unit_full_printf(u, rvalue, &k);
1860         if (r < 0) {
1861                 log_syntax(unit, LOG_WARNING, filename, line, r,
1862                            "Failed to resolve unit specifiers in '%s', ignoring: %m",
1863                            rvalue);
1864                 return 0;
1865         }
1866
1867         r = parse_cpu_set_extend(k, &c->cpu_set, true, unit, filename, line, lvalue);
1868         if (r >= 0)
1869                 c->cpu_affinity_from_numa = false;
1870
1871         return 0;
1872 }
1873
1874 int config_parse_capability_set(
1875                 const char *unit,
1876                 const char *filename,
1877                 unsigned line,
1878                 const char *section,
1879                 unsigned section_line,
1880                 const char *lvalue,
1881                 int ltype,
1882                 const char *rvalue,
1883                 void *data,
1884                 void *userdata) {
1885
1886         uint64_t *capability_set = data;
1887         uint64_t sum = 0, initial = 0;
1888         bool invert = false;
1889         int r;
1890
1891         assert(filename);
1892         assert(lvalue);
1893         assert(rvalue);
1894         assert(data);
1895
1896         if (rvalue[0] == '~') {
1897                 invert = true;
1898                 rvalue++;
1899         }
1900
1901         if (streq(lvalue, "CapabilityBoundingSet"))
1902                 initial = CAP_ALL; /* initialized to all bits on */
1903         /* else "AmbientCapabilities" initialized to all bits off */
1904
1905         r = capability_set_from_string(rvalue, &sum);
1906         if (r < 0) {
1907                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s= specifier '%s', ignoring: %m", lvalue, rvalue);
1908                 return 0;
1909         }
1910
1911         if (sum == 0 || *capability_set == initial)
1912                 /* "", "~" or uninitialized data -> replace */
1913                 *capability_set = invert ? ~sum : sum;
1914         else {
1915                 /* previous data -> merge */
1916                 if (invert)
1917                         *capability_set &= ~sum;
1918                 else
1919                         *capability_set |= sum;
1920         }
1921
1922         return 0;
1923 }
1924
1925 int config_parse_exec_selinux_context(
1926                 const char *unit,
1927                 const char *filename,
1928                 unsigned line,
1929                 const char *section,
1930                 unsigned section_line,
1931                 const char *lvalue,
1932                 int ltype,
1933                 const char *rvalue,
1934                 void *data,
1935                 void *userdata) {
1936
1937         ExecContext *c = data;
1938         const Unit *u = userdata;
1939         bool ignore;
1940         char *k;
1941         int r;
1942
1943         assert(filename);
1944         assert(lvalue);
1945         assert(rvalue);
1946         assert(data);
1947
1948         if (isempty(rvalue)) {
1949                 c->selinux_context = mfree(c->selinux_context);
1950                 c->selinux_context_ignore = false;
1951                 return 0;
1952         }
1953
1954         if (rvalue[0] == '-') {
1955                 ignore = true;
1956                 rvalue++;
1957         } else
1958                 ignore = false;
1959
1960         r = unit_full_printf(u, rvalue, &k);
1961         if (r < 0) {
1962                 log_syntax(unit, ignore ? LOG_WARNING : LOG_ERR, filename, line, r,
1963                            "Failed to resolve unit specifiers in '%s'%s: %m",
1964                            rvalue, ignore ? ", ignoring" : "");
1965                 return ignore ? 0 : -ENOEXEC;
1966         }
1967
1968         free_and_replace(c->selinux_context, k);
1969         c->selinux_context_ignore = ignore;
1970
1971         return 0;
1972 }
1973
1974 int config_parse_exec_apparmor_profile(
1975                 const char *unit,
1976                 const char *filename,
1977                 unsigned line,
1978                 const char *section,
1979                 unsigned section_line,
1980                 const char *lvalue,
1981                 int ltype,
1982                 const char *rvalue,
1983                 void *data,
1984                 void *userdata) {
1985
1986         ExecContext *c = data;
1987         const Unit *u = userdata;
1988         bool ignore;
1989         char *k;
1990         int r;
1991
1992         assert(filename);
1993         assert(lvalue);
1994         assert(rvalue);
1995         assert(data);
1996
1997         if (isempty(rvalue)) {
1998                 c->apparmor_profile = mfree(c->apparmor_profile);
1999                 c->apparmor_profile_ignore = false;
2000                 return 0;
2001         }
2002
2003         if (rvalue[0] == '-') {
2004                 ignore = true;
2005                 rvalue++;
2006         } else
2007                 ignore = false;
2008
2009         r = unit_full_printf(u, rvalue, &k);
2010         if (r < 0) {
2011                 log_syntax(unit, ignore ? LOG_WARNING : LOG_ERR, filename, line, r,
2012                            "Failed to resolve unit specifiers in '%s'%s: %m",
2013                            rvalue, ignore ? ", ignoring" : "");
2014                 return ignore ? 0 : -ENOEXEC;
2015         }
2016
2017         free_and_replace(c->apparmor_profile, k);
2018         c->apparmor_profile_ignore = ignore;
2019
2020         return 0;
2021 }
2022
2023 int config_parse_exec_smack_process_label(
2024                 const char *unit,
2025                 const char *filename,
2026                 unsigned line,
2027                 const char *section,
2028                 unsigned section_line,
2029                 const char *lvalue,
2030                 int ltype,
2031                 const char *rvalue,
2032                 void *data,
2033                 void *userdata) {
2034
2035         ExecContext *c = data;
2036         const Unit *u = userdata;
2037         bool ignore;
2038         char *k;
2039         int r;
2040
2041         assert(filename);
2042         assert(lvalue);
2043         assert(rvalue);
2044         assert(data);
2045
2046         if (isempty(rvalue)) {
2047                 c->smack_process_label = mfree(c->smack_process_label);
2048                 c->smack_process_label_ignore = false;
2049                 return 0;
2050         }
2051
2052         if (rvalue[0] == '-') {
2053                 ignore = true;
2054                 rvalue++;
2055         } else
2056                 ignore = false;
2057
2058         r = unit_full_printf(u, rvalue, &k);
2059         if (r < 0) {
2060                 log_syntax(unit, ignore ? LOG_WARNING : LOG_ERR, filename, line, r,
2061                            "Failed to resolve unit specifiers in '%s'%s: %m",
2062                            rvalue, ignore ? ", ignoring" : "");
2063                 return ignore ? 0 : -ENOEXEC;
2064         }
2065
2066         free_and_replace(c->smack_process_label, k);
2067         c->smack_process_label_ignore = ignore;
2068
2069         return 0;
2070 }
2071
2072 int config_parse_timer(
2073                 const char *unit,
2074                 const char *filename,
2075                 unsigned line,
2076                 const char *section,
2077                 unsigned section_line,
2078                 const char *lvalue,
2079                 int ltype,
2080                 const char *rvalue,
2081                 void *data,
2082                 void *userdata) {
2083
2084         _cleanup_(calendar_spec_freep) CalendarSpec *c = NULL;
2085         _cleanup_free_ char *k = NULL;
2086         const Unit *u = userdata;
2087         Timer *t = data;
2088         usec_t usec = 0;
2089         TimerValue *v;
2090         int r;
2091
2092         assert(filename);
2093         assert(lvalue);
2094         assert(rvalue);
2095         assert(data);
2096
2097         if (isempty(rvalue)) {
2098                 /* Empty assignment resets list */
2099                 timer_free_values(t);
2100                 return 0;
2101         }
2102
2103         r = unit_full_printf(u, rvalue, &k);
2104         if (r < 0) {
2105                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
2106                 return 0;
2107         }
2108
2109         if (ltype == TIMER_CALENDAR) {
2110                 r = calendar_spec_from_string(k, &c);
2111                 if (r < 0) {
2112                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse calendar specification, ignoring: %s", k);
2113                         return 0;
2114                 }
2115         } else {
2116                 r = parse_sec(k, &usec);
2117                 if (r < 0) {
2118                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse timer value, ignoring: %s", k);
2119                         return 0;
2120                 }
2121         }
2122
2123         v = new(TimerValue, 1);
2124         if (!v)
2125                 return log_oom();
2126
2127         *v = (TimerValue) {
2128                 .base = ltype,
2129                 .value = usec,
2130                 .calendar_spec = TAKE_PTR(c),
2131         };
2132
2133         LIST_PREPEND(value, t->values, v);
2134
2135         return 0;
2136 }
2137
2138 int config_parse_trigger_unit(
2139                 const char *unit,
2140                 const char *filename,
2141                 unsigned line,
2142                 const char *section,
2143                 unsigned section_line,
2144                 const char *lvalue,
2145                 int ltype,
2146                 const char *rvalue,
2147                 void *data,
2148                 void *userdata) {
2149
2150         _cleanup_free_ char *p = NULL;
2151         Unit *u = data;
2152         UnitType type;
2153         int r;
2154
2155         assert(filename);
2156         assert(lvalue);
2157         assert(rvalue);
2158         assert(data);
2159
2160         if (UNIT_TRIGGER(u)) {
2161                 log_syntax(unit, LOG_WARNING, filename, line, 0, "Multiple units to trigger specified, ignoring: %s", rvalue);
2162                 return 0;
2163         }
2164
2165         r = unit_name_printf(u, rvalue, &p);
2166         if (r < 0) {
2167                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue);
2168                 return 0;
2169         }
2170
2171         type = unit_name_to_type(p);
2172         if (type < 0) {
2173                 log_syntax(unit, LOG_WARNING, filename, line, type, "Unit type not valid, ignoring: %s", rvalue);
2174                 return 0;
2175         }
2176         if (unit_has_name(u, p)) {
2177                 log_syntax(unit, LOG_WARNING, filename, line, 0, "Units cannot trigger themselves, ignoring: %s", rvalue);
2178                 return 0;
2179         }
2180
2181         r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_TRIGGERS, p, true, UNIT_DEPENDENCY_FILE);
2182         if (r < 0) {
2183                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to add trigger on %s, ignoring: %m", p);
2184                 return 0;
2185         }
2186
2187         return 0;
2188 }
2189
2190 int config_parse_path_spec(const char *unit,
2191                            const char *filename,
2192                            unsigned line,
2193                            const char *section,
2194                            unsigned section_line,
2195                            const char *lvalue,
2196                            int ltype,
2197                            const char *rvalue,
2198                            void *data,
2199                            void *userdata) {
2200
2201         Path *p = data;
2202         PathSpec *s;
2203         PathType b;
2204         _cleanup_free_ char *k = NULL;
2205         int r;
2206
2207         assert(filename);
2208         assert(lvalue);
2209         assert(rvalue);
2210         assert(data);
2211
2212         if (isempty(rvalue)) {
2213                 /* Empty assignment clears list */
2214                 path_free_specs(p);
2215                 return 0;
2216         }
2217
2218         b = path_type_from_string(lvalue);
2219         if (b < 0) {
2220                 log_syntax(unit, LOG_WARNING, filename, line, b, "Failed to parse path type, ignoring: %s", lvalue);
2221                 return 0;
2222         }
2223
2224         r = unit_path_printf(UNIT(p), rvalue, &k);
2225         if (r < 0) {
2226                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue);
2227                 return 0;
2228         }
2229
2230         r = path_simplify_and_warn(k, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
2231         if (r < 0)
2232                 return 0;
2233
2234         s = new0(PathSpec, 1);
2235         if (!s)
2236                 return log_oom();
2237
2238         s->unit = UNIT(p);
2239         s->path = TAKE_PTR(k);
2240         s->type = b;
2241         s->inotify_fd = -1;
2242
2243         LIST_PREPEND(spec, p->specs, s);
2244
2245         return 0;
2246 }
2247
2248 int config_parse_socket_service(
2249                 const char *unit,
2250                 const char *filename,
2251                 unsigned line,
2252                 const char *section,
2253                 unsigned section_line,
2254                 const char *lvalue,
2255                 int ltype,
2256                 const char *rvalue,
2257                 void *data,
2258                 void *userdata) {
2259
2260         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2261         _cleanup_free_ char *p = NULL;
2262         Socket *s = data;
2263         Unit *x;
2264         int r;
2265
2266         assert(filename);
2267         assert(lvalue);
2268         assert(rvalue);
2269         assert(data);
2270
2271         r = unit_name_printf(UNIT(s), rvalue, &p);
2272         if (r < 0) {
2273                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue);
2274                 return 0;
2275         }
2276
2277         if (!endswith(p, ".service")) {
2278                 log_syntax(unit, LOG_WARNING, filename, line, 0, "Unit must be of type service, ignoring: %s", rvalue);
2279                 return 0;
2280         }
2281
2282         r = manager_load_unit(UNIT(s)->manager, p, NULL, &error, &x);
2283         if (r < 0) {
2284                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to load unit %s, ignoring: %s", rvalue, bus_error_message(&error, r));
2285                 return 0;
2286         }
2287
2288         unit_ref_set(&s->service, UNIT(s), x);
2289
2290         return 0;
2291 }
2292
2293 int config_parse_fdname(
2294                 const char *unit,
2295                 const char *filename,
2296                 unsigned line,
2297                 const char *section,
2298                 unsigned section_line,
2299                 const char *lvalue,
2300                 int ltype,
2301                 const char *rvalue,
2302                 void *data,
2303                 void *userdata) {
2304
2305         _cleanup_free_ char *p = NULL;
2306         Socket *s = data;
2307         int r;
2308
2309         assert(filename);
2310         assert(lvalue);
2311         assert(rvalue);
2312         assert(data);
2313
2314         if (isempty(rvalue)) {
2315                 s->fdname = mfree(s->fdname);
2316                 return 0;
2317         }
2318
2319         r = unit_fd_printf(UNIT(s), rvalue, &p);
2320         if (r < 0) {
2321                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
2322                 return 0;
2323         }
2324
2325         if (!fdname_is_valid(p)) {
2326                 log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid file descriptor name, ignoring: %s", p);
2327                 return 0;
2328         }
2329
2330         return free_and_replace(s->fdname, p);
2331 }
2332
2333 int config_parse_service_sockets(
2334                 const char *unit,
2335                 const char *filename,
2336                 unsigned line,
2337                 const char *section,
2338                 unsigned section_line,
2339                 const char *lvalue,
2340                 int ltype,
2341                 const char *rvalue,
2342                 void *data,
2343                 void *userdata) {
2344
2345         Service *s = data;
2346         int r;
2347
2348         assert(filename);
2349         assert(lvalue);
2350         assert(rvalue);
2351         assert(data);
2352
2353         for (const char *p = rvalue;;) {
2354                 _cleanup_free_ char *word = NULL, *k = NULL;
2355
2356                 r = extract_first_word(&p, &word, NULL, 0);
2357                 if (r == -ENOMEM)
2358                         return log_oom();
2359                 if (r < 0) {
2360                         log_syntax(unit, LOG_WARNING, filename, line, r, "Trailing garbage in sockets, ignoring: %s", rvalue);
2361                         return 0;
2362                 }
2363                 if (r == 0)
2364                         return 0;
2365
2366                 r = unit_name_printf(UNIT(s), word, &k);
2367                 if (r < 0) {
2368                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", word);
2369                         continue;
2370                 }
2371
2372                 if (!endswith(k, ".socket")) {
2373                         log_syntax(unit, LOG_WARNING, filename, line, 0, "Unit must be of type socket, ignoring: %s", k);
2374                         continue;
2375                 }
2376
2377                 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_WANTS, UNIT_AFTER, k, true, UNIT_DEPENDENCY_FILE);
2378                 if (r < 0)
2379                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to add dependency on %s, ignoring: %m", k);
2380
2381                 r = unit_add_dependency_by_name(UNIT(s), UNIT_TRIGGERED_BY, k, true, UNIT_DEPENDENCY_FILE);
2382                 if (r < 0)
2383                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to add dependency on %s, ignoring: %m", k);
2384         }
2385 }
2386
2387 int config_parse_bus_name(
2388                 const char *unit,
2389                 const char *filename,
2390                 unsigned line,
2391                 const char *section,
2392                 unsigned section_line,
2393                 const char *lvalue,
2394                 int ltype,
2395                 const char *rvalue,
2396                 void *data,
2397                 void *userdata) {
2398
2399         _cleanup_free_ char *k = NULL;
2400         const Unit *u = userdata;
2401         int r;
2402
2403         assert(filename);
2404         assert(lvalue);
2405         assert(rvalue);
2406         assert(u);
2407
2408         r = unit_full_printf_full(u, rvalue, SD_BUS_MAXIMUM_NAME_LENGTH, &k);
2409         if (r < 0) {
2410                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue);
2411                 return 0;
2412         }
2413
2414         if (!sd_bus_service_name_is_valid(k)) {
2415                 log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid bus name, ignoring: %s", k);
2416                 return 0;
2417         }
2418
2419         return config_parse_string(unit, filename, line, section, section_line, lvalue, ltype, k, data, userdata);
2420 }
2421
2422 int config_parse_service_timeout(
2423                 const char *unit,
2424                 const char *filename,
2425                 unsigned line,
2426                 const char *section,
2427                 unsigned section_line,
2428                 const char *lvalue,
2429                 int ltype,
2430                 const char *rvalue,
2431                 void *data,
2432                 void *userdata) {
2433
2434         Service *s = userdata;
2435         usec_t usec;
2436         int r;
2437
2438         assert(filename);
2439         assert(lvalue);
2440         assert(rvalue);
2441         assert(s);
2442
2443         /* This is called for two cases: TimeoutSec= and TimeoutStartSec=. */
2444
2445         /* Traditionally, these options accepted 0 to disable the timeouts. However, a timeout of 0 suggests it happens
2446          * immediately, hence fix this to become USEC_INFINITY instead. This is in-line with how we internally handle
2447          * all other timeouts. */
2448         r = parse_sec_fix_0(rvalue, &usec);
2449         if (r < 0) {
2450                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s= parameter, ignoring: %s", lvalue, rvalue);
2451                 return 0;
2452         }
2453
2454         s->start_timeout_defined = true;
2455         s->timeout_start_usec = usec;
2456
2457         if (streq(lvalue, "TimeoutSec"))
2458                 s->timeout_stop_usec = usec;
2459
2460         return 0;
2461 }
2462
2463 int config_parse_timeout_abort(
2464                 const char *unit,
2465                 const char *filename,
2466                 unsigned line,
2467                 const char *section,
2468                 unsigned section_line,
2469                 const char *lvalue,
2470                 int ltype,
2471                 const char *rvalue,
2472                 void *data,
2473                 void *userdata) {
2474
2475         usec_t *ret = data;
2476         int r;
2477
2478         assert(filename);
2479         assert(lvalue);
2480         assert(rvalue);
2481         assert(ret);
2482
2483         /* Note: apart from setting the arg, this returns an extra bit of information in the return value. */
2484
2485         if (isempty(rvalue)) {
2486                 *ret = 0;
2487                 return 0; /* "not set" */
2488         }
2489
2490         r = parse_sec(rvalue, ret);
2491         if (r < 0)
2492                 return log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s= setting, ignoring: %s", lvalue, rvalue);
2493
2494         return 1; /* "set" */
2495 }
2496
2497 int config_parse_service_timeout_abort(
2498                 const char *unit,
2499                 const char *filename,
2500                 unsigned line,
2501                 const char *section,
2502                 unsigned section_line,
2503                 const char *lvalue,
2504                 int ltype,
2505                 const char *rvalue,
2506                 void *data,
2507                 void *userdata) {
2508
2509         Service *s = userdata;
2510         int r;
2511
2512         assert(s);
2513
2514         r = config_parse_timeout_abort(unit, filename, line, section, section_line, lvalue, ltype, rvalue,
2515                                        &s->timeout_abort_usec, s);
2516         if (r >= 0)
2517                 s->timeout_abort_set = r;
2518         return 0;
2519 }
2520
2521 int config_parse_sec_fix_0(
2522                 const char *unit,
2523                 const char *filename,
2524                 unsigned line,
2525                 const char *section,
2526                 unsigned section_line,
2527                 const char *lvalue,
2528                 int ltype,
2529                 const char *rvalue,
2530                 void *data,
2531                 void *userdata) {
2532
2533         usec_t *usec = data;
2534         int r;
2535
2536         assert(filename);
2537         assert(lvalue);
2538         assert(rvalue);
2539         assert(usec);
2540
2541         /* This is pretty much like config_parse_sec(), except that this treats a time of 0 as infinity, for
2542          * compatibility with older versions of systemd where 0 instead of infinity was used as indicator to turn off a
2543          * timeout. */
2544
2545         r = parse_sec_fix_0(rvalue, usec);
2546         if (r < 0)
2547                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s= parameter, ignoring: %s", lvalue, rvalue);
2548
2549         return 0;
2550 }
2551
2552 int config_parse_user_group_compat(
2553                 const char *unit,
2554                 const char *filename,
2555                 unsigned line,
2556                 const char *section,
2557                 unsigned section_line,
2558                 const char *lvalue,
2559                 int ltype,
2560                 const char *rvalue,
2561                 void *data,
2562                 void *userdata) {
2563
2564         _cleanup_free_ char *k = NULL;
2565         char **user = data;
2566         const Unit *u = userdata;
2567         int r;
2568
2569         assert(filename);
2570         assert(lvalue);
2571         assert(rvalue);
2572         assert(u);
2573
2574         if (isempty(rvalue)) {
2575                 *user = mfree(*user);
2576                 return 0;
2577         }
2578
2579         r = unit_full_printf(u, rvalue, &k);
2580         if (r < 0) {
2581                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s: %m", rvalue);
2582                 return -ENOEXEC;
2583         }
2584
2585         if (!valid_user_group_name(k, VALID_USER_ALLOW_NUMERIC|VALID_USER_RELAX|VALID_USER_WARN)) {
2586                 log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid user/group name or numeric ID: %s", k);
2587                 return -ENOEXEC;
2588         }
2589
2590         if (strstr(lvalue, "User") && streq(k, NOBODY_USER_NAME))
2591                 log_struct(LOG_NOTICE,
2592                            "MESSAGE=%s:%u: Special user %s configured, this is not safe!", filename, line, k,
2593                            "UNIT=%s", unit,
2594                            "MESSAGE_ID=" SD_MESSAGE_NOBODY_USER_UNSUITABLE_STR,
2595                            "OFFENDING_USER=%s", k,
2596                            "CONFIG_FILE=%s", filename,
2597                            "CONFIG_LINE=%u", line);
2598
2599         return free_and_replace(*user, k);
2600 }
2601
2602 int config_parse_user_group_strv_compat(
2603                 const char *unit,
2604                 const char *filename,
2605                 unsigned line,
2606                 const char *section,
2607                 unsigned section_line,
2608                 const char *lvalue,
2609                 int ltype,
2610                 const char *rvalue,
2611                 void *data,
2612                 void *userdata) {
2613
2614         char ***users = data;
2615         const Unit *u = userdata;
2616         int r;
2617
2618         assert(filename);
2619         assert(lvalue);
2620         assert(rvalue);
2621         assert(u);
2622
2623         if (isempty(rvalue)) {
2624                 *users = strv_free(*users);
2625                 return 0;
2626         }
2627
2628         for (const char *p = rvalue;;) {
2629                 _cleanup_free_ char *word = NULL, *k = NULL;
2630
2631                 r = extract_first_word(&p, &word, NULL, 0);
2632                 if (r == -ENOMEM)
2633                         return log_oom();
2634                 if (r < 0) {
2635                         log_syntax(unit, LOG_ERR, filename, line, r, "Invalid syntax: %s", rvalue);
2636                         return -ENOEXEC;
2637                 }
2638                 if (r == 0)
2639                         return 0;
2640
2641                 r = unit_full_printf(u, word, &k);
2642                 if (r < 0) {
2643                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s: %m", word);
2644                         return -ENOEXEC;
2645                 }
2646
2647                 if (!valid_user_group_name(k, VALID_USER_ALLOW_NUMERIC|VALID_USER_RELAX|VALID_USER_WARN)) {
2648                         log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid user/group name or numeric ID: %s", k);
2649                         return -ENOEXEC;
2650                 }
2651
2652                 r = strv_push(users, k);
2653                 if (r < 0)
2654                         return log_oom();
2655
2656                 k = NULL;
2657         }
2658 }
2659
2660 int config_parse_working_directory(
2661                 const char *unit,
2662                 const char *filename,
2663                 unsigned line,
2664                 const char *section,
2665                 unsigned section_line,
2666                 const char *lvalue,
2667                 int ltype,
2668                 const char *rvalue,
2669                 void *data,
2670                 void *userdata) {
2671
2672         ExecContext *c = data;
2673         const Unit *u = userdata;
2674         bool missing_ok;
2675         int r;
2676
2677         assert(filename);
2678         assert(lvalue);
2679         assert(rvalue);
2680         assert(c);
2681         assert(u);
2682
2683         if (isempty(rvalue)) {
2684                 c->working_directory_home = false;
2685                 c->working_directory = mfree(c->working_directory);
2686                 return 0;
2687         }
2688
2689         if (rvalue[0] == '-') {
2690                 missing_ok = true;
2691                 rvalue++;
2692         } else
2693                 missing_ok = false;
2694
2695         if (streq(rvalue, "~")) {
2696                 c->working_directory_home = true;
2697                 c->working_directory = mfree(c->working_directory);
2698         } else {
2699                 _cleanup_free_ char *k = NULL;
2700
2701                 r = unit_path_printf(u, rvalue, &k);
2702                 if (r < 0) {
2703                         log_syntax(unit, missing_ok ? LOG_WARNING : LOG_ERR, filename, line, r,
2704                                    "Failed to resolve unit specifiers in working directory path '%s'%s: %m",
2705                                    rvalue, missing_ok ? ", ignoring" : "");
2706                         return missing_ok ? 0 : -ENOEXEC;
2707                 }
2708
2709                 r = path_simplify_and_warn(k, PATH_CHECK_ABSOLUTE | (missing_ok ? 0 : PATH_CHECK_FATAL), unit, filename, line, lvalue);
2710                 if (r < 0)
2711                         return missing_ok ? 0 : -ENOEXEC;
2712
2713                 c->working_directory_home = false;
2714                 free_and_replace(c->working_directory, k);
2715         }
2716
2717         c->working_directory_missing_ok = missing_ok;
2718         return 0;
2719 }
2720
2721 int config_parse_unit_env_file(const char *unit,
2722                                const char *filename,
2723                                unsigned line,
2724                                const char *section,
2725                                unsigned section_line,
2726                                const char *lvalue,
2727                                int ltype,
2728                                const char *rvalue,
2729                                void *data,
2730                                void *userdata) {
2731
2732         char ***env = data;
2733         const Unit *u = userdata;
2734         _cleanup_free_ char *n = NULL;
2735         int r;
2736
2737         assert(filename);
2738         assert(lvalue);
2739         assert(rvalue);
2740         assert(data);
2741
2742         if (isempty(rvalue)) {
2743                 /* Empty assignment frees the list */
2744                 *env = strv_free(*env);
2745                 return 0;
2746         }
2747
2748         r = unit_full_printf_full(u, rvalue, PATH_MAX, &n);
2749         if (r < 0) {
2750                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
2751                 return 0;
2752         }
2753
2754         r = path_simplify_and_warn(n[0] == '-' ? n + 1 : n, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
2755         if (r < 0)
2756                 return 0;
2757
2758         r = strv_push(env, n);
2759         if (r < 0)
2760                 return log_oom();
2761
2762         n = NULL;
2763
2764         return 0;
2765 }
2766
2767 int config_parse_environ(
2768                 const char *unit,
2769                 const char *filename,
2770                 unsigned line,
2771                 const char *section,
2772                 unsigned section_line,
2773                 const char *lvalue,
2774                 int ltype,
2775                 const char *rvalue,
2776                 void *data,
2777                 void *userdata) {
2778
2779         const Unit *u = userdata;
2780         char ***env = data;
2781         int r;
2782
2783         assert(filename);
2784         assert(lvalue);
2785         assert(rvalue);
2786         assert(data);
2787
2788         if (isempty(rvalue)) {
2789                 /* Empty assignment resets the list */
2790                 *env = strv_free(*env);
2791                 return 0;
2792         }
2793
2794         for (const char *p = rvalue;; ) {
2795                 _cleanup_free_ char *word = NULL, *resolved = NULL;
2796
2797                 r = extract_first_word(&p, &word, NULL, EXTRACT_CUNESCAPE|EXTRACT_UNQUOTE);
2798                 if (r == -ENOMEM)
2799                         return log_oom();
2800                 if (r < 0) {
2801                         log_syntax(unit, LOG_WARNING, filename, line, r,
2802                                    "Invalid syntax, ignoring: %s", rvalue);
2803                         return 0;
2804                 }
2805                 if (r == 0)
2806                         return 0;
2807
2808                 if (u)
2809                         r = unit_env_printf(u, word, &resolved);
2810                 else
2811                         r = specifier_printf(word, sc_arg_max(), system_and_tmp_specifier_table, NULL, NULL, &resolved);
2812                 if (r < 0) {
2813                         log_syntax(unit, LOG_WARNING, filename, line, r,
2814                                    "Failed to resolve specifiers in %s, ignoring: %m", word);
2815                         continue;
2816                 }
2817
2818                 if (!env_assignment_is_valid(resolved)) {
2819                         log_syntax(unit, LOG_WARNING, filename, line, 0,
2820                                    "Invalid environment assignment, ignoring: %s", resolved);
2821                         continue;
2822                 }
2823
2824                 r = strv_env_replace_consume(env, TAKE_PTR(resolved));
2825                 if (r < 0)
2826                         return log_error_errno(r, "Failed to update environment: %m");
2827         }
2828 }
2829
2830 int config_parse_pass_environ(
2831                 const char *unit,
2832                 const char *filename,
2833                 unsigned line,
2834                 const char *section,
2835                 unsigned section_line,
2836                 const char *lvalue,
2837                 int ltype,
2838                 const char *rvalue,
2839                 void *data,
2840                 void *userdata) {
2841
2842         _cleanup_strv_free_ char **n = NULL;
2843         const Unit *u = userdata;
2844         char*** passenv = data;
2845         size_t nlen = 0;
2846         int r;
2847
2848         assert(filename);
2849         assert(lvalue);
2850         assert(rvalue);
2851         assert(data);
2852
2853         if (isempty(rvalue)) {
2854                 /* Empty assignment resets the list */
2855                 *passenv = strv_free(*passenv);
2856                 return 0;
2857         }
2858
2859         for (const char *p = rvalue;;) {
2860                 _cleanup_free_ char *word = NULL, *k = NULL;
2861
2862                 r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
2863                 if (r == -ENOMEM)
2864                         return log_oom();
2865                 if (r < 0) {
2866                         log_syntax(unit, LOG_WARNING, filename, line, r,
2867                                    "Trailing garbage in %s, ignoring: %s", lvalue, rvalue);
2868                         break;
2869                 }
2870                 if (r == 0)
2871                         break;
2872
2873                 if (u) {
2874                         r = unit_env_printf(u, word, &k);
2875                         if (r < 0) {
2876                                 log_syntax(unit, LOG_WARNING, filename, line, r,
2877                                            "Failed to resolve specifiers in %s, ignoring: %m", word);
2878                                 continue;
2879                         }
2880                 } else
2881                         k = TAKE_PTR(word);
2882
2883                 if (!env_name_is_valid(k)) {
2884                         log_syntax(unit, LOG_WARNING, filename, line, 0,
2885                                    "Invalid environment name for %s, ignoring: %s", lvalue, k);
2886                         continue;
2887                 }
2888
2889                 if (!GREEDY_REALLOC(n, nlen + 2))
2890                         return log_oom();
2891
2892                 n[nlen++] = TAKE_PTR(k);
2893                 n[nlen] = NULL;
2894         }
2895
2896         if (n) {
2897                 r = strv_extend_strv(passenv, n, true);
2898                 if (r < 0)
2899                         return log_oom();
2900         }
2901
2902         return 0;
2903 }
2904
2905 int config_parse_unset_environ(
2906                 const char *unit,
2907                 const char *filename,
2908                 unsigned line,
2909                 const char *section,
2910                 unsigned section_line,
2911                 const char *lvalue,
2912                 int ltype,
2913                 const char *rvalue,
2914                 void *data,
2915                 void *userdata) {
2916
2917         _cleanup_strv_free_ char **n = NULL;
2918         char*** unsetenv = data;
2919         const Unit *u = userdata;
2920         size_t nlen = 0;
2921         int r;
2922
2923         assert(filename);
2924         assert(lvalue);
2925         assert(rvalue);
2926         assert(data);
2927
2928         if (isempty(rvalue)) {
2929                 /* Empty assignment resets the list */
2930                 *unsetenv = strv_free(*unsetenv);
2931                 return 0;
2932         }
2933
2934         for (const char *p = rvalue;;) {
2935                 _cleanup_free_ char *word = NULL, *k = NULL;
2936
2937                 r = extract_first_word(&p, &word, NULL, EXTRACT_CUNESCAPE|EXTRACT_UNQUOTE);
2938                 if (r == -ENOMEM)
2939                         return log_oom();
2940                 if (r < 0) {
2941                         log_syntax(unit, LOG_WARNING, filename, line, r,
2942                                    "Trailing garbage in %s, ignoring: %s", lvalue, rvalue);
2943                         break;
2944                 }
2945                 if (r == 0)
2946                         break;
2947
2948                 if (u) {
2949                         r = unit_env_printf(u, word, &k);
2950                         if (r < 0) {
2951                                 log_syntax(unit, LOG_WARNING, filename, line, r,
2952                                            "Failed to resolve unit specifiers in %s, ignoring: %m", word);
2953                                 continue;
2954                         }
2955                 } else
2956                         k = TAKE_PTR(word);
2957
2958                 if (!env_assignment_is_valid(k) && !env_name_is_valid(k)) {
2959                         log_syntax(unit, LOG_WARNING, filename, line, 0,
2960                                    "Invalid environment name or assignment %s, ignoring: %s", lvalue, k);
2961                         continue;
2962                 }
2963
2964                 if (!GREEDY_REALLOC(n, nlen + 2))
2965                         return log_oom();
2966
2967                 n[nlen++] = TAKE_PTR(k);
2968                 n[nlen] = NULL;
2969         }
2970
2971         if (n) {
2972                 r = strv_extend_strv(unsetenv, n, true);
2973                 if (r < 0)
2974                         return log_oom();
2975         }
2976
2977         return 0;
2978 }
2979
2980 int config_parse_log_extra_fields(
2981                 const char *unit,
2982                 const char *filename,
2983                 unsigned line,
2984                 const char *section,
2985                 unsigned section_line,
2986                 const char *lvalue,
2987                 int ltype,
2988                 const char *rvalue,
2989                 void *data,
2990                 void *userdata) {
2991
2992         ExecContext *c = data;
2993         const Unit *u = userdata;
2994         int r;
2995
2996         assert(filename);
2997         assert(lvalue);
2998         assert(rvalue);
2999         assert(c);
3000
3001         if (isempty(rvalue)) {
3002                 exec_context_free_log_extra_fields(c);
3003                 return 0;
3004         }
3005
3006         for (const char *p = rvalue;;) {
3007                 _cleanup_free_ char *word = NULL, *k = NULL;
3008                 struct iovec *t;
3009                 const char *eq;
3010
3011                 r = extract_first_word(&p, &word, NULL, EXTRACT_CUNESCAPE|EXTRACT_UNQUOTE);
3012                 if (r == -ENOMEM)
3013                         return log_oom();
3014                 if (r < 0) {
3015                         log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
3016                         return 0;
3017                 }
3018                 if (r == 0)
3019                         return 0;
3020
3021                 r = unit_full_printf(u, word, &k);
3022                 if (r < 0) {
3023                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", word);
3024                         continue;
3025                 }
3026
3027                 eq = strchr(k, '=');
3028                 if (!eq) {
3029                         log_syntax(unit, LOG_WARNING, filename, line, 0, "Log field lacks '=' character, ignoring: %s", k);
3030                         continue;
3031                 }
3032
3033                 if (!journal_field_valid(k, eq-k, false)) {
3034                         log_syntax(unit, LOG_WARNING, filename, line, 0, "Log field name is invalid, ignoring: %s", k);
3035                         continue;
3036                 }
3037
3038                 t = reallocarray(c->log_extra_fields, c->n_log_extra_fields+1, sizeof(struct iovec));
3039                 if (!t)
3040                         return log_oom();
3041
3042                 c->log_extra_fields = t;
3043                 c->log_extra_fields[c->n_log_extra_fields++] = IOVEC_MAKE_STRING(k);
3044
3045                 k = NULL;
3046         }
3047 }
3048
3049 int config_parse_log_namespace(
3050                 const char *unit,
3051                 const char *filename,
3052                 unsigned line,
3053                 const char *section,
3054                 unsigned section_line,
3055                 const char *lvalue,
3056                 int ltype,
3057                 const char *rvalue,
3058                 void *data,
3059                 void *userdata) {
3060
3061         _cleanup_free_ char *k = NULL;
3062         ExecContext *c = data;
3063         const Unit *u = userdata;
3064         int r;
3065
3066         assert(filename);
3067         assert(lvalue);
3068         assert(rvalue);
3069         assert(c);
3070
3071         if (isempty(rvalue)) {
3072                 c->log_namespace = mfree(c->log_namespace);
3073                 return 0;
3074         }
3075
3076         r = unit_full_printf_full(u, rvalue, NAME_MAX, &k);
3077         if (r < 0) {
3078                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue);
3079                 return 0;
3080         }
3081
3082         if (!log_namespace_name_valid(k)) {
3083                 log_syntax(unit, LOG_WARNING, filename, line, 0, "Specified log namespace name is not valid, ignoring: %s", k);
3084                 return 0;
3085         }
3086
3087         free_and_replace(c->log_namespace, k);
3088         return 0;
3089 }
3090
3091 int config_parse_unit_condition_path(
3092                 const char *unit,
3093                 const char *filename,
3094                 unsigned line,
3095                 const char *section,
3096                 unsigned section_line,
3097                 const char *lvalue,
3098                 int ltype,
3099                 const char *rvalue,
3100                 void *data,
3101                 void *userdata) {
3102
3103         _cleanup_free_ char *p = NULL;
3104         Condition **list = data, *c;
3105         ConditionType t = ltype;
3106         bool trigger, negate;
3107         const Unit *u = userdata;
3108         int r;
3109
3110         assert(filename);
3111         assert(lvalue);
3112         assert(rvalue);
3113         assert(data);
3114
3115         if (isempty(rvalue)) {
3116                 /* Empty assignment resets the list */
3117                 *list = condition_free_list(*list);
3118                 return 0;
3119         }
3120
3121         trigger = rvalue[0] == '|';
3122         if (trigger)
3123                 rvalue++;
3124
3125         negate = rvalue[0] == '!';
3126         if (negate)
3127                 rvalue++;
3128
3129         r = unit_path_printf(u, rvalue, &p);
3130         if (r < 0) {
3131                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue);
3132                 return 0;
3133         }
3134
3135         r = path_simplify_and_warn(p, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
3136         if (r < 0)
3137                 return 0;
3138
3139         c = condition_new(t, p, trigger, negate);
3140         if (!c)
3141                 return log_oom();
3142
3143         LIST_PREPEND(conditions, *list, c);
3144         return 0;
3145 }
3146
3147 int config_parse_unit_condition_string(
3148                 const char *unit,
3149                 const char *filename,
3150                 unsigned line,
3151                 const char *section,
3152                 unsigned section_line,
3153                 const char *lvalue,
3154                 int ltype,
3155                 const char *rvalue,
3156                 void *data,
3157                 void *userdata) {
3158
3159         _cleanup_free_ char *s = NULL;
3160         Condition **list = data, *c;
3161         ConditionType t = ltype;
3162         bool trigger, negate;
3163         const Unit *u = userdata;
3164         int r;
3165
3166         assert(filename);
3167         assert(lvalue);
3168         assert(rvalue);
3169         assert(data);
3170
3171         if (isempty(rvalue)) {
3172                 /* Empty assignment resets the list */
3173                 *list = condition_free_list(*list);
3174                 return 0;
3175         }
3176
3177         trigger = *rvalue == '|';
3178         if (trigger)
3179                 rvalue += 1 + strspn(rvalue + 1, WHITESPACE);
3180
3181         negate = *rvalue == '!';
3182         if (negate)
3183                 rvalue += 1 + strspn(rvalue + 1, WHITESPACE);
3184
3185         r = unit_full_printf(u, rvalue, &s);
3186         if (r < 0) {
3187                 log_syntax(unit, LOG_WARNING, filename, line, r,
3188                            "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
3189                 return 0;
3190         }
3191
3192         c = condition_new(t, s, trigger, negate);
3193         if (!c)
3194                 return log_oom();
3195
3196         LIST_PREPEND(conditions, *list, c);
3197         return 0;
3198 }
3199
3200 int config_parse_unit_requires_mounts_for(
3201                 const char *unit,
3202                 const char *filename,
3203                 unsigned line,
3204                 const char *section,
3205                 unsigned section_line,
3206                 const char *lvalue,
3207                 int ltype,
3208                 const char *rvalue,
3209                 void *data,
3210                 void *userdata) {
3211
3212         Unit *u = userdata;
3213         int r;
3214
3215         assert(filename);
3216         assert(lvalue);
3217         assert(rvalue);
3218         assert(data);
3219
3220         for (const char *p = rvalue;;) {
3221                 _cleanup_free_ char *word = NULL, *resolved = NULL;
3222
3223                 r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
3224                 if (r == -ENOMEM)
3225                         return log_oom();
3226                 if (r < 0) {
3227                         log_syntax(unit, LOG_WARNING, filename, line, r,
3228                                    "Invalid syntax, ignoring: %s", rvalue);
3229                         return 0;
3230                 }
3231                 if (r == 0)
3232                         return 0;
3233
3234                 r = unit_path_printf(u, word, &resolved);
3235                 if (r < 0) {
3236                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", word);
3237                         continue;
3238                 }
3239
3240                 r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
3241                 if (r < 0)
3242                         continue;
3243
3244                 r = unit_require_mounts_for(u, resolved, UNIT_DEPENDENCY_FILE);
3245                 if (r < 0) {
3246                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to add required mount '%s', ignoring: %m", resolved);
3247                         continue;
3248                 }
3249         }
3250 }
3251
3252 int config_parse_documentation(
3253                 const char *unit,
3254                 const char *filename,
3255                 unsigned line,
3256                 const char *section,
3257                 unsigned section_line,
3258                 const char *lvalue,
3259                 int ltype,
3260                 const char *rvalue,
3261                 void *data,
3262                 void *userdata) {
3263
3264         Unit *u = userdata;
3265         int r;
3266         char **a, **b;
3267
3268         assert(filename);
3269         assert(lvalue);
3270         assert(rvalue);
3271         assert(u);
3272
3273         if (isempty(rvalue)) {
3274                 /* Empty assignment resets the list */
3275                 u->documentation = strv_free(u->documentation);
3276                 return 0;
3277         }
3278
3279         r = config_parse_unit_strv_printf(unit, filename, line, section, section_line, lvalue, ltype,
3280                                           rvalue, data, userdata);
3281         if (r < 0)
3282                 return r;
3283
3284         for (a = b = u->documentation; a && *a; a++) {
3285
3286                 if (documentation_url_is_valid(*a))
3287                         *(b++) = *a;
3288                 else {
3289                         log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid URL, ignoring: %s", *a);
3290                         free(*a);
3291                 }
3292         }
3293         if (b)
3294                 *b = NULL;
3295
3296         return 0;
3297 }
3298
3299 #if HAVE_SECCOMP
3300 int config_parse_syscall_filter(
3301                 const char *unit,
3302                 const char *filename,
3303                 unsigned line,
3304                 const char *section,
3305                 unsigned section_line,
3306                 const char *lvalue,
3307                 int ltype,
3308                 const char *rvalue,
3309                 void *data,
3310                 void *userdata) {
3311
3312         ExecContext *c = data;
3313         _unused_ const Unit *u = userdata;
3314         bool invert = false;
3315         int r;
3316
3317         assert(filename);
3318         assert(lvalue);
3319         assert(rvalue);
3320         assert(u);
3321
3322         if (isempty(rvalue)) {
3323                 /* Empty assignment resets the list */
3324                 c->syscall_filter = hashmap_free(c->syscall_filter);
3325                 c->syscall_allow_list = false;
3326                 return 0;
3327         }
3328
3329         if (rvalue[0] == '~') {
3330                 invert = true;
3331                 rvalue++;
3332         }
3333
3334         if (!c->syscall_filter) {
3335                 c->syscall_filter = hashmap_new(NULL);
3336                 if (!c->syscall_filter)
3337                         return log_oom();
3338
3339                 if (invert)
3340                         /* Allow everything but the ones listed */
3341                         c->syscall_allow_list = false;
3342                 else {
3343                         /* Allow nothing but the ones listed */
3344                         c->syscall_allow_list = true;
3345
3346                         /* Accept default syscalls if we are on an allow_list */
3347                         r = seccomp_parse_syscall_filter(
3348                                         "@default", -1, c->syscall_filter,
3349                                         SECCOMP_PARSE_PERMISSIVE|SECCOMP_PARSE_ALLOW_LIST,
3350                                         unit,
3351                                         NULL, 0);
3352                         if (r < 0)
3353                                 return r;
3354                 }
3355         }
3356
3357         for (const char *p = rvalue;;) {
3358                 _cleanup_free_ char *word = NULL, *name = NULL;
3359                 int num;
3360
3361                 r = extract_first_word(&p, &word, NULL, 0);
3362                 if (r == -ENOMEM)
3363                         return log_oom();
3364                 if (r < 0) {
3365                         log_syntax(unit, LOG_WARNING, filename, line, r,
3366                                    "Invalid syntax, ignoring: %s", rvalue);
3367                         return 0;
3368                 }
3369                 if (r == 0)
3370                         return 0;
3371
3372                 r = parse_syscall_and_errno(word, &name, &num);
3373                 if (r < 0) {
3374                         log_syntax(unit, LOG_WARNING, filename, line, r,
3375                                    "Failed to parse syscall:errno, ignoring: %s", word);
3376                         continue;
3377                 }
3378                 if (!invert && num >= 0) {
3379                         log_syntax(unit, LOG_WARNING, filename, line, 0,
3380                                    "Allow-listed system calls cannot take error number, ignoring: %s", word);
3381                         continue;
3382                 }
3383
3384                 r = seccomp_parse_syscall_filter(
3385                                 name, num, c->syscall_filter,
3386                                 SECCOMP_PARSE_LOG|SECCOMP_PARSE_PERMISSIVE|
3387                                 (invert ? SECCOMP_PARSE_INVERT : 0)|
3388                                 (c->syscall_allow_list ? SECCOMP_PARSE_ALLOW_LIST : 0),
3389                                 unit, filename, line);
3390                 if (r < 0)
3391                         return r;
3392         }
3393 }
3394
3395 int config_parse_syscall_log(
3396                 const char *unit,
3397                 const char *filename,
3398                 unsigned line,
3399                 const char *section,
3400                 unsigned section_line,
3401                 const char *lvalue,
3402                 int ltype,
3403                 const char *rvalue,
3404                 void *data,
3405                 void *userdata) {
3406
3407         ExecContext *c = data;
3408         _unused_ const Unit *u = userdata;
3409         bool invert = false;
3410         const char *p;
3411         int r;
3412
3413         assert(filename);
3414         assert(lvalue);
3415         assert(rvalue);
3416         assert(u);
3417
3418         if (isempty(rvalue)) {
3419                 /* Empty assignment resets the list */
3420                 c->syscall_log = hashmap_free(c->syscall_log);
3421                 c->syscall_log_allow_list = false;
3422                 return 0;
3423         }
3424
3425         if (rvalue[0] == '~') {
3426                 invert = true;
3427                 rvalue++;
3428         }
3429
3430         if (!c->syscall_log) {
3431                 c->syscall_log = hashmap_new(NULL);
3432                 if (!c->syscall_log)
3433                         return log_oom();
3434
3435                 if (invert)
3436                         /* Log everything but the ones listed */
3437                         c->syscall_log_allow_list = false;
3438                 else
3439                         /* Log nothing but the ones listed */
3440                         c->syscall_log_allow_list = true;
3441         }
3442
3443         p = rvalue;
3444         for (;;) {
3445                 _cleanup_free_ char *word = NULL;
3446
3447                 r = extract_first_word(&p, &word, NULL, 0);
3448                 if (r == -ENOMEM)
3449                         return log_oom();
3450                 if (r < 0) {
3451                         log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
3452                         return 0;
3453                 }
3454                 if (r == 0)
3455                         return 0;
3456
3457                 r = seccomp_parse_syscall_filter(
3458                                 word, -1, c->syscall_log,
3459                                 SECCOMP_PARSE_LOG|SECCOMP_PARSE_PERMISSIVE|
3460                                 (invert ? SECCOMP_PARSE_INVERT : 0)|
3461                                 (c->syscall_log_allow_list ? SECCOMP_PARSE_ALLOW_LIST : 0),
3462                                 unit, filename, line);
3463                 if (r < 0)
3464                         return r;
3465         }
3466 }
3467
3468 int config_parse_syscall_archs(
3469                 const char *unit,
3470                 const char *filename,
3471                 unsigned line,
3472                 const char *section,
3473                 unsigned section_line,
3474                 const char *lvalue,
3475                 int ltype,
3476                 const char *rvalue,
3477                 void *data,
3478                 void *userdata) {
3479
3480         Set **archs = data;
3481         int r;
3482
3483         if (isempty(rvalue)) {
3484                 *archs = set_free(*archs);
3485                 return 0;
3486         }
3487
3488         for (const char *p = rvalue;;) {
3489                 _cleanup_free_ char *word = NULL;
3490                 uint32_t a;
3491
3492                 r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
3493                 if (r == -ENOMEM)
3494                         return log_oom();
3495                 if (r < 0) {
3496                         log_syntax(unit, LOG_WARNING, filename, line, r,
3497                                    "Invalid syntax, ignoring: %s", rvalue);
3498                         return 0;
3499                 }
3500                 if (r == 0)
3501                         return 0;
3502
3503                 r = seccomp_arch_from_string(word, &a);
3504                 if (r < 0) {
3505                         log_syntax(unit, LOG_WARNING, filename, line, r,
3506                                    "Failed to parse system call architecture \"%s\", ignoring: %m", word);
3507                         continue;
3508                 }
3509
3510                 r = set_ensure_put(archs, NULL, UINT32_TO_PTR(a + 1));
3511                 if (r < 0)
3512                         return log_oom();
3513         }
3514 }
3515
3516 int config_parse_syscall_errno(
3517                 const char *unit,
3518                 const char *filename,
3519                 unsigned line,
3520                 const char *section,
3521                 unsigned section_line,
3522                 const char *lvalue,
3523                 int ltype,
3524                 const char *rvalue,
3525                 void *data,
3526                 void *userdata) {
3527
3528         ExecContext *c = data;
3529         int e;
3530
3531         assert(filename);
3532         assert(lvalue);
3533         assert(rvalue);
3534
3535         if (isempty(rvalue) || streq(rvalue, "kill")) {
3536                 /* Empty assignment resets to KILL */
3537                 c->syscall_errno = SECCOMP_ERROR_NUMBER_KILL;
3538                 return 0;
3539         }
3540
3541         e = parse_errno(rvalue);
3542         if (e < 0) {
3543                 log_syntax(unit, LOG_WARNING, filename, line, e, "Failed to parse error number, ignoring: %s", rvalue);
3544                 return 0;
3545         }
3546         if (e == 0) {
3547                 log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid error number, ignoring: %s", rvalue);
3548                 return 0;
3549         }
3550
3551         c->syscall_errno = e;
3552         return 0;
3553 }
3554
3555 int config_parse_address_families(
3556                 const char *unit,
3557                 const char *filename,
3558                 unsigned line,
3559                 const char *section,
3560                 unsigned section_line,
3561                 const char *lvalue,
3562                 int ltype,
3563                 const char *rvalue,
3564                 void *data,
3565                 void *userdata) {
3566
3567         ExecContext *c = data;
3568         bool invert = false;
3569         int r;
3570
3571         assert(filename);
3572         assert(lvalue);
3573         assert(rvalue);
3574
3575         if (isempty(rvalue)) {
3576                 /* Empty assignment resets the list */
3577                 c->address_families = set_free(c->address_families);
3578                 c->address_families_allow_list = false;
3579                 return 0;
3580         }
3581
3582         if (streq(rvalue, "none")) {
3583                 /* Forbid all address families. */
3584                 c->address_families = set_free(c->address_families);
3585                 c->address_families_allow_list = true;
3586                 return 0;
3587         }
3588
3589         if (rvalue[0] == '~') {
3590                 invert = true;
3591                 rvalue++;
3592         }
3593
3594         if (!c->address_families) {
3595                 c->address_families = set_new(NULL);
3596                 if (!c->address_families)
3597                         return log_oom();
3598
3599                 c->address_families_allow_list = !invert;
3600         }
3601
3602         for (const char *p = rvalue;;) {
3603                 _cleanup_free_ char *word = NULL;
3604                 int af;
3605
3606                 r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
3607                 if (r == -ENOMEM)
3608                         return log_oom();
3609                 if (r < 0) {
3610                         log_syntax(unit, LOG_WARNING, filename, line, r,
3611                                    "Invalid syntax, ignoring: %s", rvalue);
3612                         return 0;
3613                 }
3614                 if (r == 0)
3615                         return 0;
3616
3617                 af = af_from_name(word);
3618                 if (af < 0) {
3619                         log_syntax(unit, LOG_WARNING, filename, line, af,
3620                                    "Failed to parse address family, ignoring: %s", word);
3621                         continue;
3622                 }
3623
3624                 /* If we previously wanted to forbid an address family and now
3625                  * we want to allow it, then just remove it from the list.
3626                  */
3627                 if (!invert == c->address_families_allow_list)  {
3628                         r = set_put(c->address_families, INT_TO_PTR(af));
3629                         if (r < 0)
3630                                 return log_oom();
3631                 } else
3632                         set_remove(c->address_families, INT_TO_PTR(af));
3633         }
3634 }
3635
3636 int config_parse_restrict_namespaces(
3637                 const char *unit,
3638                 const char *filename,
3639                 unsigned line,
3640                 const char *section,
3641                 unsigned section_line,
3642                 const char *lvalue,
3643                 int ltype,
3644                 const char *rvalue,
3645                 void *data,
3646                 void *userdata) {
3647
3648         ExecContext *c = data;
3649         unsigned long flags;
3650         bool invert = false;
3651         int r;
3652
3653         if (isempty(rvalue)) {
3654                 /* Reset to the default. */
3655                 c->restrict_namespaces = NAMESPACE_FLAGS_INITIAL;
3656                 return 0;
3657         }
3658
3659         /* Boolean parameter ignores the previous settings */
3660         r = parse_boolean(rvalue);
3661         if (r > 0) {
3662                 c->restrict_namespaces = 0;
3663                 return 0;
3664         } else if (r == 0) {
3665                 c->restrict_namespaces = NAMESPACE_FLAGS_ALL;
3666                 return 0;
3667         }
3668
3669         if (rvalue[0] == '~') {
3670                 invert = true;
3671                 rvalue++;
3672         }
3673
3674         /* Not a boolean argument, in this case it's a list of namespace types. */
3675         r = namespace_flags_from_string(rvalue, &flags);
3676         if (r < 0) {
3677                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse namespace type string, ignoring: %s", rvalue);
3678                 return 0;
3679         }
3680
3681         if (c->restrict_namespaces == NAMESPACE_FLAGS_INITIAL)
3682                 /* Initial assignment. Just set the value. */
3683                 c->restrict_namespaces = invert ? (~flags) & NAMESPACE_FLAGS_ALL : flags;
3684         else
3685                 /* Merge the value with the previous one. */
3686                 SET_FLAG(c->restrict_namespaces, flags, !invert);
3687
3688         return 0;
3689 }
3690 #endif
3691
3692 int config_parse_restrict_filesystems(
3693                 const char *unit,
3694                 const char *filename,
3695                 unsigned line,
3696                 const char *section,
3697                 unsigned section_line,
3698                 const char *lvalue,
3699                 int ltype,
3700                 const char *rvalue,
3701                 void *data,
3702                 void *userdata) {
3703         ExecContext *c = data;
3704         bool invert = false;
3705         int r;
3706
3707         assert(filename);
3708         assert(lvalue);
3709         assert(rvalue);
3710         assert(data);
3711
3712         if (isempty(rvalue)) {
3713                 /* Empty assignment resets the list */
3714                 c->restrict_filesystems = set_free(c->restrict_filesystems);
3715                 c->restrict_filesystems_allow_list = false;
3716                 return 0;
3717         }
3718
3719         if (rvalue[0] == '~') {
3720                 invert = true;
3721                 rvalue++;
3722         }
3723
3724         if (!c->restrict_filesystems) {
3725                 if (invert)
3726                         /* Allow everything but the ones listed */
3727                         c->restrict_filesystems_allow_list = false;
3728                 else
3729                         /* Allow nothing but the ones listed */
3730                         c->restrict_filesystems_allow_list = true;
3731         }
3732
3733         for (const char *p = rvalue;;) {
3734                 _cleanup_free_ char *word = NULL;
3735
3736                 r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
3737                 if (r == 0)
3738                         break;
3739                 if (r == -ENOMEM)
3740                         return log_oom();
3741                 if (r < 0) {
3742                         log_syntax(unit, LOG_WARNING, filename, line, r,
3743                                    "Trailing garbage in %s, ignoring: %s", lvalue, rvalue);
3744                         break;
3745                 }
3746
3747                 r = lsm_bpf_parse_filesystem(
3748                               word,
3749                               &c->restrict_filesystems,
3750                               FILESYSTEM_PARSE_LOG|
3751                               (invert ? FILESYSTEM_PARSE_INVERT : 0)|
3752                               (c->restrict_filesystems_allow_list ? FILESYSTEM_PARSE_ALLOW_LIST : 0),
3753                               unit, filename, line);
3754
3755                 if (r < 0)
3756                         return r;
3757         }
3758
3759         return 0;
3760 }
3761
3762 int config_parse_unit_slice(
3763                 const char *unit,
3764                 const char *filename,
3765                 unsigned line,
3766                 const char *section,
3767                 unsigned section_line,
3768                 const char *lvalue,
3769                 int ltype,
3770                 const char *rvalue,
3771                 void *data,
3772                 void *userdata) {
3773
3774         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
3775         _cleanup_free_ char *k = NULL;
3776         Unit *u = userdata, *slice;
3777         int r;
3778
3779         assert(filename);
3780         assert(lvalue);
3781         assert(rvalue);
3782         assert(u);
3783
3784         r = unit_name_printf(u, rvalue, &k);
3785         if (r < 0) {
3786                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue);
3787                 return 0;
3788         }
3789
3790         r = manager_load_unit(u->manager, k, NULL, &error, &slice);
3791         if (r < 0) {
3792                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to load slice unit %s, ignoring: %s", k, bus_error_message(&error, r));
3793                 return 0;
3794         }
3795
3796         r = unit_set_slice(u, slice);
3797         if (r < 0) {
3798                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to assign slice %s to unit %s, ignoring: %m", slice->id, u->id);
3799                 return 0;
3800         }
3801
3802         return 0;
3803 }
3804
3805 int config_parse_cpu_quota(
3806                 const char *unit,
3807                 const char *filename,
3808                 unsigned line,
3809                 const char *section,
3810                 unsigned section_line,
3811                 const char *lvalue,
3812                 int ltype,
3813                 const char *rvalue,
3814                 void *data,
3815                 void *userdata) {
3816
3817         CGroupContext *c = data;
3818         int r;
3819
3820         assert(filename);
3821         assert(lvalue);
3822         assert(rvalue);
3823
3824         if (isempty(rvalue)) {
3825                 c->cpu_quota_per_sec_usec = USEC_INFINITY;
3826                 return 0;
3827         }
3828
3829         r = parse_permyriad_unbounded(rvalue);
3830         if (r <= 0) {
3831                 log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid CPU quota '%s', ignoring.", rvalue);
3832                 return 0;
3833         }
3834
3835         c->cpu_quota_per_sec_usec = ((usec_t) r * USEC_PER_SEC) / 10000U;
3836         return 0;
3837 }
3838
3839 int config_parse_allowed_cpuset(
3840                 const char *unit,
3841                 const char *filename,
3842                 unsigned line,
3843                 const char *section,
3844                 unsigned section_line,
3845                 const char *lvalue,
3846                 int ltype,
3847                 const char *rvalue,
3848                 void *data,
3849                 void *userdata) {
3850
3851         CPUSet *c = data;
3852
3853         (void) parse_cpu_set_extend(rvalue, c, true, unit, filename, line, lvalue);
3854         return 0;
3855 }
3856
3857 int config_parse_memory_limit(
3858                 const char *unit,
3859                 const char *filename,
3860                 unsigned line,
3861                 const char *section,
3862                 unsigned section_line,
3863                 const char *lvalue,
3864                 int ltype,
3865                 const char *rvalue,
3866                 void *data,
3867                 void *userdata) {
3868
3869         CGroupContext *c = data;
3870         uint64_t bytes = CGROUP_LIMIT_MAX;
3871         int r;
3872
3873         if (isempty(rvalue) && STR_IN_SET(lvalue, "DefaultMemoryLow",
3874                                                   "DefaultMemoryMin",
3875                                                   "MemoryLow",
3876                                                   "MemoryMin"))
3877                 bytes = CGROUP_LIMIT_MIN;
3878         else if (!isempty(rvalue) && !streq(rvalue, "infinity")) {
3879
3880                 r = parse_permyriad(rvalue);
3881                 if (r < 0) {
3882                         r = parse_size(rvalue, 1024, &bytes);
3883                         if (r < 0) {
3884                                 log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid memory limit '%s', ignoring: %m", rvalue);
3885                                 return 0;
3886                         }
3887                 } else
3888                         bytes = physical_memory_scale(r, 10000U);
3889
3890                 if (bytes >= UINT64_MAX ||
3891                     (bytes <= 0 && !STR_IN_SET(lvalue, "MemorySwapMax", "MemoryLow", "MemoryMin", "DefaultMemoryLow", "DefaultMemoryMin"))) {
3892                         log_syntax(unit, LOG_WARNING, filename, line, 0, "Memory limit '%s' out of range, ignoring.", rvalue);
3893                         return 0;
3894                 }
3895         }
3896
3897         if (streq(lvalue, "DefaultMemoryLow")) {
3898                 c->default_memory_low = bytes;
3899                 c->default_memory_low_set = true;
3900         } else if (streq(lvalue, "DefaultMemoryMin")) {
3901                 c->default_memory_min = bytes;
3902                 c->default_memory_min_set = true;
3903         } else if (streq(lvalue, "MemoryMin")) {
3904                 c->memory_min = bytes;
3905                 c->memory_min_set = true;
3906         } else if (streq(lvalue, "MemoryLow")) {
3907                 c->memory_low = bytes;
3908                 c->memory_low_set = true;
3909         } else if (streq(lvalue, "MemoryHigh"))
3910                 c->memory_high = bytes;
3911         else if (streq(lvalue, "MemoryMax"))
3912                 c->memory_max = bytes;
3913         else if (streq(lvalue, "MemorySwapMax"))
3914                 c->memory_swap_max = bytes;
3915         else if (streq(lvalue, "MemoryLimit"))
3916                 c->memory_limit = bytes;
3917         else
3918                 return -EINVAL;
3919
3920         return 0;
3921 }
3922
3923 int config_parse_tasks_max(
3924                 const char *unit,
3925                 const char *filename,
3926                 unsigned line,
3927                 const char *section,
3928                 unsigned section_line,
3929                 const char *lvalue,
3930                 int ltype,
3931                 const char *rvalue,
3932                 void *data,
3933                 void *userdata) {
3934
3935         const Unit *u = userdata;
3936         TasksMax *tasks_max = data;
3937         uint64_t v;
3938         int r;
3939
3940         if (isempty(rvalue)) {
3941                 *tasks_max = u ? u->manager->default_tasks_max : TASKS_MAX_UNSET;
3942                 return 0;
3943         }
3944
3945         if (streq(rvalue, "infinity")) {
3946                 *tasks_max = TASKS_MAX_UNSET;
3947                 return 0;
3948         }
3949
3950         r = parse_permyriad(rvalue);
3951         if (r >= 0)
3952                 *tasks_max = (TasksMax) { r, 10000U }; /* r‱ */
3953         else {
3954                 r = safe_atou64(rvalue, &v);
3955                 if (r < 0) {
3956                         log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid maximum tasks value '%s', ignoring: %m", rvalue);
3957                         return 0;
3958                 }
3959
3960                 if (v <= 0 || v >= UINT64_MAX) {
3961                         log_syntax(unit, LOG_WARNING, filename, line, 0, "Maximum tasks value '%s' out of range, ignoring.", rvalue);
3962                         return 0;
3963                 }
3964
3965                 *tasks_max = (TasksMax) { v };
3966         }
3967
3968         return 0;
3969 }
3970
3971 int config_parse_delegate(
3972                 const char *unit,
3973                 const char *filename,
3974                 unsigned line,
3975                 const char *section,
3976                 unsigned section_line,
3977                 const char *lvalue,
3978                 int ltype,
3979                 const char *rvalue,
3980                 void *data,
3981                 void *userdata) {
3982
3983         CGroupContext *c = data;
3984         UnitType t;
3985         int r;
3986
3987         t = unit_name_to_type(unit);
3988         assert(t != _UNIT_TYPE_INVALID);
3989
3990         if (!unit_vtable[t]->can_delegate) {
3991                 log_syntax(unit, LOG_WARNING, filename, line, 0, "Delegate= setting not supported for this unit type, ignoring.");
3992                 return 0;
3993         }
3994
3995         /* We either accept a boolean value, which may be used to turn on delegation for all controllers, or turn it
3996          * off for all. Or it takes a list of controller names, in which case we add the specified controllers to the
3997          * mask to delegate. */
3998
3999         if (isempty(rvalue)) {
4000                 /* An empty string resets controllers and set Delegate=yes. */
4001                 c->delegate = true;
4002                 c->delegate_controllers = 0;
4003                 return 0;
4004         }
4005
4006         r = parse_boolean(rvalue);
4007         if (r < 0) {
4008                 CGroupMask mask = 0;
4009
4010                 for (const char *p = rvalue;;) {
4011                         _cleanup_free_ char *word = NULL;
4012                         CGroupController cc;
4013
4014                         r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
4015                         if (r == -ENOMEM)
4016                                 return log_oom();
4017                         if (r < 0) {
4018                                 log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
4019                                 return 0;
4020                         }
4021                         if (r == 0)
4022                                 break;
4023
4024                         cc = cgroup_controller_from_string(word);
4025                         if (cc < 0) {
4026                                 log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid controller name '%s', ignoring", word);
4027                                 continue;
4028                         }
4029
4030                         mask |= CGROUP_CONTROLLER_TO_MASK(cc);
4031                 }
4032
4033                 c->delegate = true;
4034                 c->delegate_controllers |= mask;
4035
4036         } else if (r > 0) {
4037                 c->delegate = true;
4038                 c->delegate_controllers = _CGROUP_MASK_ALL;
4039         } else {
4040                 c->delegate = false;
4041                 c->delegate_controllers = 0;
4042         }
4043
4044         return 0;
4045 }
4046
4047 int config_parse_managed_oom_mode(
4048                 const char *unit,
4049                 const char *filename,
4050                 unsigned line,
4051                 const char *section,
4052                 unsigned section_line,
4053                 const char *lvalue,
4054                 int ltype,
4055                 const char *rvalue,
4056                 void *data,
4057                 void *userdata) {
4058
4059         ManagedOOMMode *mode = data, m;
4060         UnitType t;
4061
4062         t = unit_name_to_type(unit);
4063         assert(t != _UNIT_TYPE_INVALID);
4064
4065         if (!unit_vtable[t]->can_set_managed_oom)
4066                 return log_syntax(unit, LOG_WARNING, filename, line, 0, "%s= is not supported for this unit type, ignoring.", lvalue);
4067
4068         if (isempty(rvalue)) {
4069                 *mode = MANAGED_OOM_AUTO;
4070                 return 0;
4071         }
4072
4073         m = managed_oom_mode_from_string(rvalue);
4074         if (m < 0) {
4075                 log_syntax(unit, LOG_WARNING, filename, line, m, "Invalid syntax, ignoring: %s", rvalue);
4076                 return 0;
4077         }
4078
4079         *mode = m;
4080         return 0;
4081 }
4082
4083 int config_parse_managed_oom_mem_pressure_limit(
4084                 const char *unit,
4085                 const char *filename,
4086                 unsigned line,
4087                 const char *section,
4088                 unsigned section_line,
4089                 const char *lvalue,
4090                 int ltype,
4091                 const char *rvalue,
4092                 void *data,
4093                 void *userdata) {
4094
4095         uint32_t *limit = data;
4096         UnitType t;
4097         int r;
4098
4099         t = unit_name_to_type(unit);
4100         assert(t != _UNIT_TYPE_INVALID);
4101
4102         if (!unit_vtable[t]->can_set_managed_oom)
4103                 return log_syntax(unit, LOG_WARNING, filename, line, 0, "%s= is not supported for this unit type, ignoring.", lvalue);
4104
4105         if (isempty(rvalue)) {
4106                 *limit = 0;
4107                 return 0;
4108         }
4109
4110         r = parse_permyriad(rvalue);
4111         if (r < 0) {
4112                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse memory pressure limit value, ignoring: %s", rvalue);
4113                 return 0;
4114         }
4115
4116         /* Normalize to 2^32-1 == 100% */
4117         *limit = UINT32_SCALE_FROM_PERMYRIAD(r);
4118         return 0;
4119 }
4120
4121 int config_parse_device_allow(
4122                 const char *unit,
4123                 const char *filename,
4124                 unsigned line,
4125                 const char *section,
4126                 unsigned section_line,
4127                 const char *lvalue,
4128                 int ltype,
4129                 const char *rvalue,
4130                 void *data,
4131                 void *userdata) {
4132
4133         _cleanup_free_ char *path = NULL, *resolved = NULL;
4134         CGroupContext *c = data;
4135         const char *p = rvalue;
4136         int r;
4137
4138         if (isempty(rvalue)) {
4139                 while (c->device_allow)
4140                         cgroup_context_free_device_allow(c, c->device_allow);
4141
4142                 return 0;
4143         }
4144
4145         r = extract_first_word(&p, &path, NULL, EXTRACT_UNQUOTE);
4146         if (r == -ENOMEM)
4147                 return log_oom();
4148         if (r <= 0) {
4149                 log_syntax(unit, LOG_WARNING, filename, line, r,
4150                            "Failed to extract device path and rights from '%s', ignoring.", rvalue);
4151                 return 0;
4152         }
4153
4154         r = unit_path_printf(userdata, path, &resolved);
4155         if (r < 0) {
4156                 log_syntax(unit, LOG_WARNING, filename, line, r,
4157                            "Failed to resolve unit specifiers in '%s', ignoring: %m", path);
4158                 return 0;
4159         }
4160
4161         if (!STARTSWITH_SET(resolved, "block-", "char-")) {
4162
4163                 r = path_simplify_and_warn(resolved, 0, unit, filename, line, lvalue);
4164                 if (r < 0)
4165                         return 0;
4166
4167                 if (!valid_device_node_path(resolved)) {
4168                         log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid device node path '%s', ignoring.", resolved);
4169                         return 0;
4170                 }
4171         }
4172
4173         if (!isempty(p) && !in_charset(p, "rwm")) {
4174                 log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid device rights '%s', ignoring.", p);
4175                 return 0;
4176         }
4177
4178         return cgroup_add_device_allow(c, resolved, p);
4179 }
4180
4181 int config_parse_io_device_weight(
4182                 const char *unit,
4183                 const char *filename,
4184                 unsigned line,
4185                 const char *section,
4186                 unsigned section_line,
4187                 const char *lvalue,
4188                 int ltype,
4189                 const char *rvalue,
4190                 void *data,
4191                 void *userdata) {
4192
4193         _cleanup_free_ char *path = NULL, *resolved = NULL;
4194         CGroupIODeviceWeight *w;
4195         CGroupContext *c = data;
4196         const char *p = rvalue;
4197         uint64_t u;
4198         int r;
4199
4200         assert(filename);
4201         assert(lvalue);
4202         assert(rvalue);
4203
4204         if (isempty(rvalue)) {
4205                 while (c->io_device_weights)
4206                         cgroup_context_free_io_device_weight(c, c->io_device_weights);
4207
4208                 return 0;
4209         }
4210
4211         r = extract_first_word(&p, &path, NULL, EXTRACT_UNQUOTE);
4212         if (r == -ENOMEM)
4213                 return log_oom();
4214         if (r < 0) {
4215                 log_syntax(unit, LOG_WARNING, filename, line, r,
4216                            "Failed to extract device path and weight from '%s', ignoring.", rvalue);
4217                 return 0;
4218         }
4219         if (r == 0 || isempty(p)) {
4220                 log_syntax(unit, LOG_WARNING, filename, line, 0,
4221                            "Invalid device path or weight specified in '%s', ignoring.", rvalue);
4222                 return 0;
4223         }
4224
4225         r = unit_path_printf(userdata, path, &resolved);
4226         if (r < 0) {
4227                 log_syntax(unit, LOG_WARNING, filename, line, r,
4228                            "Failed to resolve unit specifiers in '%s', ignoring: %m", path);
4229                 return 0;
4230         }
4231
4232         r = path_simplify_and_warn(resolved, 0, unit, filename, line, lvalue);
4233         if (r < 0)
4234                 return 0;
4235
4236         r = cg_weight_parse(p, &u);
4237         if (r < 0) {
4238                 log_syntax(unit, LOG_WARNING, filename, line, r, "IO weight '%s' invalid, ignoring: %m", p);
4239                 return 0;
4240         }
4241
4242         assert(u != CGROUP_WEIGHT_INVALID);
4243
4244         w = new0(CGroupIODeviceWeight, 1);
4245         if (!w)
4246                 return log_oom();
4247
4248         w->path = TAKE_PTR(resolved);
4249         w->weight = u;
4250
4251         LIST_PREPEND(device_weights, c->io_device_weights, w);
4252         return 0;
4253 }
4254
4255 int config_parse_io_device_latency(
4256                 const char *unit,
4257                 const char *filename,
4258                 unsigned line,
4259                 const char *section,
4260                 unsigned section_line,
4261                 const char *lvalue,
4262                 int ltype,
4263                 const char *rvalue,
4264                 void *data,
4265                 void *userdata) {
4266
4267         _cleanup_free_ char *path = NULL, *resolved = NULL;
4268         CGroupIODeviceLatency *l;
4269         CGroupContext *c = data;
4270         const char *p = rvalue;
4271         usec_t usec;
4272         int r;
4273
4274         assert(filename);
4275         assert(lvalue);
4276         assert(rvalue);
4277
4278         if (isempty(rvalue)) {
4279                 while (c->io_device_latencies)
4280                         cgroup_context_free_io_device_latency(c, c->io_device_latencies);
4281
4282                 return 0;
4283         }
4284
4285         r = extract_first_word(&p, &path, NULL, EXTRACT_UNQUOTE);
4286         if (r == -ENOMEM)
4287                 return log_oom();
4288         if (r < 0) {
4289                 log_syntax(unit, LOG_WARNING, filename, line, r,
4290                            "Failed to extract device path and latency from '%s', ignoring.", rvalue);
4291                 return 0;
4292         }
4293         if (r == 0 || isempty(p)) {
4294                 log_syntax(unit, LOG_WARNING, filename, line, 0,
4295                            "Invalid device path or latency specified in '%s', ignoring.", rvalue);
4296                 return 0;
4297         }
4298
4299         r = unit_path_printf(userdata, path, &resolved);
4300         if (r < 0) {
4301                 log_syntax(unit, LOG_WARNING, filename, line, r,
4302                            "Failed to resolve unit specifiers in '%s', ignoring: %m", path);
4303                 return 0;
4304         }
4305
4306         r = path_simplify_and_warn(resolved, 0, unit, filename, line, lvalue);
4307         if (r < 0)
4308                 return 0;
4309
4310         r = parse_sec(p, &usec);
4311         if (r < 0) {
4312                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse timer value, ignoring: %s", p);
4313                 return 0;
4314         }
4315
4316         l = new0(CGroupIODeviceLatency, 1);
4317         if (!l)
4318                 return log_oom();
4319
4320         l->path = TAKE_PTR(resolved);
4321         l->target_usec = usec;
4322
4323         LIST_PREPEND(device_latencies, c->io_device_latencies, l);
4324         return 0;
4325 }
4326
4327 int config_parse_io_limit(
4328                 const char *unit,
4329                 const char *filename,
4330                 unsigned line,
4331                 const char *section,
4332                 unsigned section_line,
4333                 const char *lvalue,
4334                 int ltype,
4335                 const char *rvalue,
4336                 void *data,
4337                 void *userdata) {
4338
4339         _cleanup_free_ char *path = NULL, *resolved = NULL;
4340         CGroupIODeviceLimit *l = NULL;
4341         CGroupContext *c = data;
4342         CGroupIOLimitType type;
4343         const char *p = rvalue;
4344         uint64_t num;
4345         int r;
4346
4347         assert(filename);
4348         assert(lvalue);
4349         assert(rvalue);
4350
4351         type = cgroup_io_limit_type_from_string(lvalue);
4352         assert(type >= 0);
4353
4354         if (isempty(rvalue)) {
4355                 LIST_FOREACH(device_limits, t, c->io_device_limits)
4356                         t->limits[type] = cgroup_io_limit_defaults[type];
4357                 return 0;
4358         }
4359
4360         r = extract_first_word(&p, &path, NULL, EXTRACT_UNQUOTE);
4361         if (r == -ENOMEM)
4362                 return log_oom();
4363         if (r < 0) {
4364                 log_syntax(unit, LOG_WARNING, filename, line, r,
4365                            "Failed to extract device node and bandwidth from '%s', ignoring.", rvalue);
4366                 return 0;
4367         }
4368         if (r == 0 || isempty(p)) {
4369                 log_syntax(unit, LOG_WARNING, filename, line, 0,
4370                            "Invalid device node or bandwidth specified in '%s', ignoring.", rvalue);
4371                 return 0;
4372         }
4373
4374         r = unit_path_printf(userdata, path, &resolved);
4375         if (r < 0) {
4376                 log_syntax(unit, LOG_WARNING, filename, line, r,
4377                            "Failed to resolve unit specifiers in '%s', ignoring: %m", path);
4378                 return 0;
4379         }
4380
4381         r = path_simplify_and_warn(resolved, 0, unit, filename, line, lvalue);
4382         if (r < 0)
4383                 return 0;
4384
4385         if (streq("infinity", p))
4386                 num = CGROUP_LIMIT_MAX;
4387         else {
4388                 r = parse_size(p, 1000, &num);
4389                 if (r < 0 || num <= 0) {
4390                         log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid IO limit '%s', ignoring.", p);
4391                         return 0;
4392                 }
4393         }
4394
4395         LIST_FOREACH(device_limits, t, c->io_device_limits)
4396                 if (path_equal(resolved, t->path)) {
4397                         l = t;
4398                         break;
4399                 }
4400
4401         if (!l) {
4402                 CGroupIOLimitType ttype;
4403
4404                 l = new0(CGroupIODeviceLimit, 1);
4405                 if (!l)
4406                         return log_oom();
4407
4408                 l->path = TAKE_PTR(resolved);
4409                 for (ttype = 0; ttype < _CGROUP_IO_LIMIT_TYPE_MAX; ttype++)
4410                         l->limits[ttype] = cgroup_io_limit_defaults[ttype];
4411
4412                 LIST_PREPEND(device_limits, c->io_device_limits, l);
4413         }
4414
4415         l->limits[type] = num;
4416
4417         return 0;
4418 }
4419
4420 int config_parse_blockio_device_weight(
4421                 const char *unit,
4422                 const char *filename,
4423                 unsigned line,
4424                 const char *section,
4425                 unsigned section_line,
4426                 const char *lvalue,
4427                 int ltype,
4428                 const char *rvalue,
4429                 void *data,
4430                 void *userdata) {
4431
4432         _cleanup_free_ char *path = NULL, *resolved = NULL;
4433         CGroupBlockIODeviceWeight *w;
4434         CGroupContext *c = data;
4435         const char *p = rvalue;
4436         uint64_t u;
4437         int r;
4438
4439         assert(filename);
4440         assert(lvalue);
4441         assert(rvalue);
4442
4443         if (isempty(rvalue)) {
4444                 while (c->blockio_device_weights)
4445                         cgroup_context_free_blockio_device_weight(c, c->blockio_device_weights);
4446
4447                 return 0;
4448         }
4449
4450         r = extract_first_word(&p, &path, NULL, EXTRACT_UNQUOTE);
4451         if (r == -ENOMEM)
4452                 return log_oom();
4453         if (r < 0) {
4454                 log_syntax(unit, LOG_WARNING, filename, line, r,
4455                            "Failed to extract device node and weight from '%s', ignoring.", rvalue);
4456                 return 0;
4457         }
4458         if (r == 0 || isempty(p)) {
4459                 log_syntax(unit, LOG_WARNING, filename, line, 0,
4460                            "Invalid device node or weight specified in '%s', ignoring.", rvalue);
4461                 return 0;
4462         }
4463
4464         r = unit_path_printf(userdata, path, &resolved);
4465         if (r < 0) {
4466                 log_syntax(unit, LOG_WARNING, filename, line, r,
4467                            "Failed to resolve unit specifiers in '%s', ignoring: %m", path);
4468                 return 0;
4469         }
4470
4471         r = path_simplify_and_warn(resolved, 0, unit, filename, line, lvalue);
4472         if (r < 0)
4473                 return 0;
4474
4475         r = cg_blkio_weight_parse(p, &u);
4476         if (r < 0) {
4477                 log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid block IO weight '%s', ignoring: %m", p);
4478                 return 0;
4479         }
4480
4481         assert(u != CGROUP_BLKIO_WEIGHT_INVALID);
4482
4483         w = new0(CGroupBlockIODeviceWeight, 1);
4484         if (!w)
4485                 return log_oom();
4486
4487         w->path = TAKE_PTR(resolved);
4488         w->weight = u;
4489
4490         LIST_PREPEND(device_weights, c->blockio_device_weights, w);
4491         return 0;
4492 }
4493
4494 int config_parse_blockio_bandwidth(
4495                 const char *unit,
4496                 const char *filename,
4497                 unsigned line,
4498                 const char *section,
4499                 unsigned section_line,
4500                 const char *lvalue,
4501                 int ltype,
4502                 const char *rvalue,
4503                 void *data,
4504                 void *userdata) {
4505
4506         _cleanup_free_ char *path = NULL, *resolved = NULL;
4507         CGroupBlockIODeviceBandwidth *b = NULL;
4508         CGroupContext *c = data;
4509         const char *p = rvalue;
4510         uint64_t bytes;
4511         bool read;
4512         int r;
4513
4514         assert(filename);
4515         assert(lvalue);
4516         assert(rvalue);
4517
4518         read = streq("BlockIOReadBandwidth", lvalue);
4519
4520         if (isempty(rvalue)) {
4521                 LIST_FOREACH(device_bandwidths, t, c->blockio_device_bandwidths) {
4522                         t->rbps = CGROUP_LIMIT_MAX;
4523                         t->wbps = CGROUP_LIMIT_MAX;
4524                 }
4525                 return 0;
4526         }
4527
4528         r = extract_first_word(&p, &path, NULL, EXTRACT_UNQUOTE);
4529         if (r == -ENOMEM)
4530                 return log_oom();
4531         if (r < 0) {
4532                 log_syntax(unit, LOG_WARNING, filename, line, r,
4533                            "Failed to extract device node and bandwidth from '%s', ignoring.", rvalue);
4534                 return 0;
4535         }
4536         if (r == 0 || isempty(p)) {
4537                 log_syntax(unit, LOG_WARNING, filename, line, 0,
4538                            "Invalid device node or bandwidth specified in '%s', ignoring.", rvalue);
4539                 return 0;
4540         }
4541
4542         r = unit_path_printf(userdata, path, &resolved);
4543         if (r < 0) {
4544                 log_syntax(unit, LOG_WARNING, filename, line, r,
4545                            "Failed to resolve unit specifiers in '%s', ignoring: %m", path);
4546                 return 0;
4547         }
4548
4549         r = path_simplify_and_warn(resolved, 0, unit, filename, line, lvalue);
4550         if (r < 0)
4551                 return 0;
4552
4553         r = parse_size(p, 1000, &bytes);
4554         if (r < 0 || bytes <= 0) {
4555                 log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid Block IO Bandwidth '%s', ignoring.", p);
4556                 return 0;
4557         }
4558
4559         LIST_FOREACH(device_bandwidths, t, c->blockio_device_bandwidths)
4560                 if (path_equal(resolved, t->path)) {
4561                         b = t;
4562                         break;
4563                 }
4564
4565         if (!b) {
4566                 b = new0(CGroupBlockIODeviceBandwidth, 1);
4567                 if (!b)
4568                         return log_oom();
4569
4570                 b->path = TAKE_PTR(resolved);
4571                 b->rbps = CGROUP_LIMIT_MAX;
4572                 b->wbps = CGROUP_LIMIT_MAX;
4573
4574                 LIST_PREPEND(device_bandwidths, c->blockio_device_bandwidths, b);
4575         }
4576
4577         if (read)
4578                 b->rbps = bytes;
4579         else
4580                 b->wbps = bytes;
4581
4582         return 0;
4583 }
4584
4585 int config_parse_job_mode_isolate(
4586                 const char *unit,
4587                 const char *filename,
4588                 unsigned line,
4589                 const char *section,
4590                 unsigned section_line,
4591                 const char *lvalue,
4592                 int ltype,
4593                 const char *rvalue,
4594                 void *data,
4595                 void *userdata) {
4596
4597         JobMode *m = data;
4598         int r;
4599
4600         assert(filename);
4601         assert(lvalue);
4602         assert(rvalue);
4603
4604         r = parse_boolean(rvalue);
4605         if (r < 0) {
4606                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse boolean, ignoring: %s", rvalue);
4607                 return 0;
4608         }
4609
4610         log_notice("%s is deprecated. Please use OnFailureJobMode= instead", lvalue);
4611
4612         *m = r ? JOB_ISOLATE : JOB_REPLACE;
4613         return 0;
4614 }
4615
4616 int config_parse_exec_directories(
4617                 const char *unit,
4618                 const char *filename,
4619                 unsigned line,
4620                 const char *section,
4621                 unsigned section_line,
4622                 const char *lvalue,
4623                 int ltype,
4624                 const char *rvalue,
4625                 void *data,
4626                 void *userdata) {
4627
4628         ExecDirectory *ed = data;
4629         const Unit *u = userdata;
4630         int r;
4631
4632         assert(filename);
4633         assert(lvalue);
4634         assert(rvalue);
4635         assert(data);
4636
4637         if (isempty(rvalue)) {
4638                 /* Empty assignment resets the list */
4639                 exec_directory_done(ed);
4640                 return 0;
4641         }
4642
4643         for (const char *p = rvalue;;) {
4644                 _cleanup_free_ char *tuple = NULL;
4645
4646                 r = extract_first_word(&p, &tuple, NULL, EXTRACT_UNQUOTE|EXTRACT_RETAIN_ESCAPE);
4647                 if (r == -ENOMEM)
4648                         return log_oom();
4649                 if (r < 0) {
4650                         log_syntax(unit, LOG_WARNING, filename, line, r,
4651                                    "Invalid syntax %s=%s, ignoring: %m", lvalue, rvalue);
4652                         return 0;
4653                 }
4654                 if (r == 0)
4655                         return 0;
4656
4657                 _cleanup_free_ char *src = NULL, *dest = NULL;
4658                 const char *q = tuple;
4659                 r = extract_many_words(&q, ":", EXTRACT_CUNESCAPE|EXTRACT_UNESCAPE_SEPARATORS, &src, &dest, NULL);
4660                 if (r == -ENOMEM)
4661                         return log_oom();
4662                 if (r <= 0) {
4663                         log_syntax(unit, LOG_WARNING, filename, line, r ?: SYNTHETIC_ERRNO(EINVAL),
4664                                    "Invalid syntax in %s=, ignoring: %s", lvalue, tuple);
4665                         return 0;
4666                 }
4667
4668                 _cleanup_free_ char *sresolved = NULL;
4669                 r = unit_path_printf(u, src, &sresolved);
4670                 if (r < 0) {
4671                         log_syntax(unit, LOG_WARNING, filename, line, r,
4672                                    "Failed to resolve unit specifiers in \"%s\", ignoring: %m", src);
4673                         continue;
4674                 }
4675
4676                 r = path_simplify_and_warn(sresolved, PATH_CHECK_RELATIVE, unit, filename, line, lvalue);
4677                 if (r < 0)
4678                         continue;
4679
4680                 if (path_startswith(sresolved, "private")) {
4681                         log_syntax(unit, LOG_WARNING, filename, line, 0,
4682                                    "%s= path can't be 'private', ignoring assignment: %s", lvalue, tuple);
4683                         continue;
4684                 }
4685
4686                 /* For State and Runtime directories we support an optional destination parameter, which
4687                  * will be used to create a symlink to the source. */
4688                 _cleanup_strv_free_ char **symlinks = NULL;
4689                 if (!isempty(dest)) {
4690                         _cleanup_free_ char *dresolved = NULL;
4691
4692                         if (streq(lvalue, "ConfigurationDirectory")) {
4693                                 log_syntax(unit, LOG_WARNING, filename, line, 0,
4694                                            "Destination parameter is not supported for ConfigurationDirectory, ignoring: %s", tuple);
4695                                 continue;
4696                         }
4697
4698                         r = unit_path_printf(u, dest, &dresolved);
4699                         if (r < 0) {
4700                                 log_syntax(unit, LOG_WARNING, filename, line, r,
4701                                         "Failed to resolve unit specifiers in \"%s\", ignoring: %m", dest);
4702                                 continue;
4703                         }
4704
4705                         r = path_simplify_and_warn(dresolved, PATH_CHECK_RELATIVE, unit, filename, line, lvalue);
4706                         if (r < 0)
4707                                 continue;
4708
4709                         r = strv_consume(&symlinks, TAKE_PTR(dresolved));
4710                         if (r < 0)
4711                                 return log_oom();
4712                 }
4713
4714                 r = exec_directory_add(&ed->items, &ed->n_items, sresolved, symlinks);
4715                 if (r < 0)
4716                         return log_oom();
4717         }
4718 }
4719
4720 int config_parse_set_credential(
4721                 const char *unit,
4722                 const char *filename,
4723                 unsigned line,
4724                 const char *section,
4725                 unsigned section_line,
4726                 const char *lvalue,
4727                 int ltype,
4728                 const char *rvalue,
4729                 void *data,
4730                 void *userdata) {
4731
4732         _cleanup_free_ char *word = NULL, *k = NULL;
4733         _cleanup_free_ void *d = NULL;
4734         ExecContext *context = data;
4735         ExecSetCredential *old;
4736         Unit *u = userdata;
4737         bool encrypted = ltype;
4738         const char *p = rvalue;
4739         size_t size;
4740         int r;
4741
4742         assert(filename);
4743         assert(lvalue);
4744         assert(rvalue);
4745         assert(context);
4746
4747         if (isempty(rvalue)) {
4748                 /* Empty assignment resets the list */
4749                 context->set_credentials = hashmap_free(context->set_credentials);
4750                 return 0;
4751         }
4752
4753         r = extract_first_word(&p, &word, ":", EXTRACT_DONT_COALESCE_SEPARATORS);
4754         if (r == -ENOMEM)
4755                 return log_oom();
4756         if (r < 0) {
4757                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to extract credential name, ignoring: %s", rvalue);
4758                 return 0;
4759         }
4760         if (r == 0 || isempty(p)) {
4761                 log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid syntax, ignoring: %s", rvalue);
4762                 return 0;
4763         }
4764
4765         r = unit_cred_printf(u, word, &k);
4766         if (r < 0) {
4767                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in \"%s\", ignoring: %m", word);
4768                 return 0;
4769         }
4770         if (!credential_name_valid(k)) {
4771                 log_syntax(unit, LOG_WARNING, filename, line, 0, "Credential name \"%s\" not valid, ignoring.", k);
4772                 return 0;
4773         }
4774
4775         if (encrypted) {
4776                 r = unbase64mem_full(p, SIZE_MAX, true, &d, &size);
4777                 if (r < 0) {
4778                         log_syntax(unit, LOG_WARNING, filename, line, r, "Encrypted credential data not valid Base64 data, ignoring.");
4779                         return 0;
4780                 }
4781         } else {
4782                 char *unescaped;
4783                 ssize_t l;
4784
4785                 /* We support escape codes here, so that users can insert trailing \n if they like */
4786                 l = cunescape(p, UNESCAPE_ACCEPT_NUL, &unescaped);
4787                 if (l < 0) {
4788                         log_syntax(unit, LOG_WARNING, filename, line, l, "Can't unescape \"%s\", ignoring: %m", p);
4789                         return 0;
4790                 }
4791
4792                 d = unescaped;
4793                 size = l;
4794         }
4795
4796         old = hashmap_get(context->set_credentials, k);
4797         if (old) {
4798                 free_and_replace(old->data, d);
4799                 old->size = size;
4800                 old->encrypted = encrypted;
4801         } else {
4802                 _cleanup_(exec_set_credential_freep) ExecSetCredential *sc = NULL;
4803
4804                 sc = new(ExecSetCredential, 1);
4805                 if (!sc)
4806                         return log_oom();
4807
4808                 *sc = (ExecSetCredential) {
4809                         .id = TAKE_PTR(k),
4810                         .data = TAKE_PTR(d),
4811                         .size = size,
4812                         .encrypted = encrypted,
4813                 };
4814
4815                 r = hashmap_ensure_put(&context->set_credentials, &exec_set_credential_hash_ops, sc->id, sc);
4816                 if (r == -ENOMEM)
4817                         return log_oom();
4818                 if (r < 0) {
4819                         log_syntax(unit, LOG_WARNING, filename, line, r,
4820                                    "Duplicated credential value '%s', ignoring assignment: %s", sc->id, rvalue);
4821                         return 0;
4822                 }
4823
4824                 TAKE_PTR(sc);
4825         }
4826
4827         return 0;
4828 }
4829
4830 int config_parse_load_credential(
4831                 const char *unit,
4832                 const char *filename,
4833                 unsigned line,
4834                 const char *section,
4835                 unsigned section_line,
4836                 const char *lvalue,
4837                 int ltype,
4838                 const char *rvalue,
4839                 void *data,
4840                 void *userdata) {
4841
4842         _cleanup_free_ char *word = NULL, *k = NULL, *q = NULL;
4843         ExecContext *context = data;
4844         ExecLoadCredential *old;
4845         bool encrypted = ltype;
4846         Unit *u = userdata;
4847         const char *p;
4848         int r;
4849
4850         assert(filename);
4851         assert(lvalue);
4852         assert(rvalue);
4853         assert(context);
4854
4855         if (isempty(rvalue)) {
4856                 /* Empty assignment resets the list */
4857                 context->load_credentials = hashmap_free(context->load_credentials);
4858                 return 0;
4859         }
4860
4861         p = rvalue;
4862         r = extract_first_word(&p, &word, ":", EXTRACT_DONT_COALESCE_SEPARATORS);
4863         if (r == -ENOMEM)
4864                 return log_oom();
4865         if (r <= 0) {
4866                 log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
4867                 return 0;
4868         }
4869
4870         r = unit_cred_printf(u, word, &k);
4871         if (r < 0) {
4872                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in \"%s\", ignoring: %m", word);
4873                 return 0;
4874         }
4875         if (!credential_name_valid(k)) {
4876                 log_syntax(unit, LOG_WARNING, filename, line, 0, "Credential name \"%s\" not valid, ignoring.", k);
4877                 return 0;
4878         }
4879
4880         if (isempty(p)) {
4881                 /* If only one field is specified take it as shortcut for inheriting a credential named
4882                  * the same way from our parent */
4883                 q = strdup(k);
4884                 if (!q)
4885                         return log_oom();
4886         } else {
4887                 r = unit_path_printf(u, p, &q);
4888                 if (r < 0) {
4889                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in \"%s\", ignoring: %m", p);
4890                         return 0;
4891                 }
4892                 if (path_is_absolute(q) ? !path_is_normalized(q) : !credential_name_valid(q)) {
4893                         log_syntax(unit, LOG_WARNING, filename, line, 0, "Credential source \"%s\" not valid, ignoring.", q);
4894                         return 0;
4895                 }
4896         }
4897
4898         old = hashmap_get(context->load_credentials, k);
4899         if (old) {
4900                 free_and_replace(old->path, q);
4901                 old->encrypted = encrypted;
4902         } else {
4903                 _cleanup_(exec_load_credential_freep) ExecLoadCredential *lc = NULL;
4904
4905                 lc = new(ExecLoadCredential, 1);
4906                 if (!lc)
4907                         return log_oom();
4908
4909                 *lc = (ExecLoadCredential) {
4910                         .id = TAKE_PTR(k),
4911                         .path = TAKE_PTR(q),
4912                         .encrypted = encrypted,
4913                 };
4914
4915                 r = hashmap_ensure_put(&context->load_credentials, &exec_load_credential_hash_ops, lc->id, lc);
4916                 if (r == -ENOMEM)
4917                         return log_oom();
4918                 if (r < 0) {
4919                         log_syntax(unit, LOG_WARNING, filename, line, r,
4920                                    "Duplicated credential value '%s', ignoring assignment: %s", lc->id, rvalue);
4921                         return 0;
4922                 }
4923
4924                 TAKE_PTR(lc);
4925         }
4926
4927         return 0;
4928 }
4929
4930 int config_parse_set_status(
4931                 const char *unit,
4932                 const char *filename,
4933                 unsigned line,
4934                 const char *section,
4935                 unsigned section_line,
4936                 const char *lvalue,
4937                 int ltype,
4938                 const char *rvalue,
4939                 void *data,
4940                 void *userdata) {
4941
4942         ExitStatusSet *status_set = data;
4943         int r;
4944
4945         assert(filename);
4946         assert(lvalue);
4947         assert(rvalue);
4948         assert(status_set);
4949
4950         /* Empty assignment resets the list */
4951         if (isempty(rvalue)) {
4952                 exit_status_set_free(status_set);
4953                 return 0;
4954         }
4955
4956         for (const char *p = rvalue;;) {
4957                 _cleanup_free_ char *word = NULL;
4958                 Bitmap *bitmap;
4959
4960                 r = extract_first_word(&p, &word, NULL, 0);
4961                 if (r == -ENOMEM)
4962                         return log_oom();
4963                 if (r < 0) {
4964                         log_syntax(unit, LOG_WARNING, filename, line, r,
4965                                    "Failed to parse %s=%s, ignoring: %m", lvalue, rvalue);
4966                         return 0;
4967                 }
4968                 if (r == 0)
4969                         return 0;
4970
4971                 /* We need to call exit_status_from_string() first, because we want
4972                  * to parse numbers as exit statuses, not signals. */
4973
4974                 r = exit_status_from_string(word);
4975                 if (r >= 0) {
4976                         assert(r >= 0 && r < 256);
4977                         bitmap = &status_set->status;
4978                 } else {
4979                         r = signal_from_string(word);
4980                         if (r < 0) {
4981                                 log_syntax(unit, LOG_WARNING, filename, line, r,
4982                                            "Failed to parse value, ignoring: %s", word);
4983                                 continue;
4984                         }
4985                         bitmap = &status_set->signal;
4986                 }
4987
4988                 r = bitmap_set(bitmap, r);
4989                 if (r < 0)
4990                         log_syntax(unit, LOG_WARNING, filename, line, r,
4991                                    "Failed to set signal or status %s, ignoring: %m", word);
4992         }
4993 }
4994
4995 int config_parse_namespace_path_strv(
4996                 const char *unit,
4997                 const char *filename,
4998                 unsigned line,
4999                 const char *section,
5000                 unsigned section_line,
5001                 const char *lvalue,
5002                 int ltype,
5003                 const char *rvalue,
5004                 void *data,
5005                 void *userdata) {
5006
5007         const Unit *u = userdata;
5008         char*** sv = data;
5009         int r;
5010
5011         assert(filename);
5012         assert(lvalue);
5013         assert(rvalue);
5014         assert(data);
5015
5016         if (isempty(rvalue)) {
5017                 /* Empty assignment resets the list */
5018                 *sv = strv_free(*sv);
5019                 return 0;
5020         }
5021
5022         for (const char *p = rvalue;;) {
5023                 _cleanup_free_ char *word = NULL, *resolved = NULL, *joined = NULL;
5024                 const char *w;
5025                 bool ignore_enoent = false, shall_prefix = false;
5026
5027                 r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
5028                 if (r == -ENOMEM)
5029                         return log_oom();
5030                 if (r < 0) {
5031                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to extract first word, ignoring: %s", rvalue);
5032                         return 0;
5033                 }
5034                 if (r == 0)
5035                         break;
5036
5037                 w = word;
5038                 if (startswith(w, "-")) {
5039                         ignore_enoent = true;
5040                         w++;
5041                 }
5042                 if (startswith(w, "+")) {
5043                         shall_prefix = true;
5044                         w++;
5045                 }
5046
5047                 r = unit_path_printf(u, w, &resolved);
5048                 if (r < 0) {
5049                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s: %m", w);
5050                         continue;
5051                 }
5052
5053                 r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
5054                 if (r < 0)
5055                         continue;
5056
5057                 joined = strjoin(ignore_enoent ? "-" : "",
5058                                  shall_prefix ? "+" : "",
5059                                  resolved);
5060
5061                 r = strv_push(sv, joined);
5062                 if (r < 0)
5063                         return log_oom();
5064
5065                 joined = NULL;
5066         }
5067
5068         return 0;
5069 }
5070
5071 int config_parse_temporary_filesystems(
5072                 const char *unit,
5073                 const char *filename,
5074                 unsigned line,
5075                 const char *section,
5076                 unsigned section_line,
5077                 const char *lvalue,
5078                 int ltype,
5079                 const char *rvalue,
5080                 void *data,
5081                 void *userdata) {
5082
5083         const Unit *u = userdata;
5084         ExecContext *c = data;
5085         int r;
5086
5087         assert(filename);
5088         assert(lvalue);
5089         assert(rvalue);
5090         assert(data);
5091
5092         if (isempty(rvalue)) {
5093                 /* Empty assignment resets the list */
5094                 temporary_filesystem_free_many(c->temporary_filesystems, c->n_temporary_filesystems);
5095                 c->temporary_filesystems = NULL;
5096                 c->n_temporary_filesystems = 0;
5097                 return 0;
5098         }
5099
5100         for (const char *p = rvalue;;) {
5101                 _cleanup_free_ char *word = NULL, *path = NULL, *resolved = NULL;
5102                 const char *w;
5103
5104                 r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
5105                 if (r == -ENOMEM)
5106                         return log_oom();
5107                 if (r < 0) {
5108                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to extract first word, ignoring: %s", rvalue);
5109                         return 0;
5110                 }
5111                 if (r == 0)
5112                         return 0;
5113
5114                 w = word;
5115                 r = extract_first_word(&w, &path, ":", EXTRACT_DONT_COALESCE_SEPARATORS);
5116                 if (r == -ENOMEM)
5117                         return log_oom();
5118                 if (r < 0) {
5119                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to extract first word, ignoring: %s", word);
5120                         continue;
5121                 }
5122                 if (r == 0) {
5123                         log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid syntax, ignoring: %s", word);
5124                         continue;
5125                 }
5126
5127                 r = unit_path_printf(u, path, &resolved);
5128                 if (r < 0) {
5129                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", path);
5130                         continue;
5131                 }
5132
5133                 r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
5134                 if (r < 0)
5135                         continue;
5136
5137                 r = temporary_filesystem_add(&c->temporary_filesystems, &c->n_temporary_filesystems, resolved, w);
5138                 if (r < 0)
5139                         return log_oom();
5140         }
5141 }
5142
5143 int config_parse_bind_paths(
5144                 const char *unit,
5145                 const char *filename,
5146                 unsigned line,
5147                 const char *section,
5148                 unsigned section_line,
5149                 const char *lvalue,
5150                 int ltype,
5151                 const char *rvalue,
5152                 void *data,
5153                 void *userdata) {
5154
5155         ExecContext *c = data;
5156         const Unit *u = userdata;
5157         int r;
5158
5159         assert(filename);
5160         assert(lvalue);
5161         assert(rvalue);
5162         assert(data);
5163
5164         if (isempty(rvalue)) {
5165                 /* Empty assignment resets the list */
5166                 bind_mount_free_many(c->bind_mounts, c->n_bind_mounts);
5167                 c->bind_mounts = NULL;
5168                 c->n_bind_mounts = 0;
5169                 return 0;
5170         }
5171
5172         for (const char *p = rvalue;;) {
5173                 _cleanup_free_ char *source = NULL, *destination = NULL;
5174                 _cleanup_free_ char *sresolved = NULL, *dresolved = NULL;
5175                 char *s = NULL, *d = NULL;
5176                 bool rbind = true, ignore_enoent = false;
5177
5178                 r = extract_first_word(&p, &source, ":" WHITESPACE, EXTRACT_UNQUOTE|EXTRACT_DONT_COALESCE_SEPARATORS);
5179                 if (r == -ENOMEM)
5180                         return log_oom();
5181                 if (r < 0) {
5182                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s, ignoring: %s", lvalue, rvalue);
5183                         return 0;
5184                 }
5185                 if (r == 0)
5186                         break;
5187
5188                 r = unit_full_printf_full(u, source, PATH_MAX, &sresolved);
5189                 if (r < 0) {
5190                         log_syntax(unit, LOG_WARNING, filename, line, r,
5191                                    "Failed to resolve unit specifiers in \"%s\", ignoring: %m", source);
5192                         continue;
5193                 }
5194
5195                 s = sresolved;
5196                 if (s[0] == '-') {
5197                         ignore_enoent = true;
5198                         s++;
5199                 }
5200
5201                 r = path_simplify_and_warn(s, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
5202                 if (r < 0)
5203                         continue;
5204
5205                 /* Optionally, the destination is specified. */
5206                 if (p && p[-1] == ':') {
5207                         r = extract_first_word(&p, &destination, ":" WHITESPACE, EXTRACT_UNQUOTE|EXTRACT_DONT_COALESCE_SEPARATORS);
5208                         if (r == -ENOMEM)
5209                                 return log_oom();
5210                         if (r < 0) {
5211                                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s, ignoring: %s", lvalue, rvalue);
5212                                 return 0;
5213                         }
5214                         if (r == 0) {
5215                                 log_syntax(unit, LOG_WARNING, filename, line, 0, "Missing argument after ':', ignoring: %s", s);
5216                                 continue;
5217                         }
5218
5219                         r = unit_path_printf(u, destination, &dresolved);
5220                         if (r < 0) {
5221                                 log_syntax(unit, LOG_WARNING, filename, line, r,
5222                                            "Failed to resolve specifiers in \"%s\", ignoring: %m", destination);
5223                                 continue;
5224                         }
5225
5226                         r = path_simplify_and_warn(dresolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
5227                         if (r < 0)
5228                                 continue;
5229
5230                         d = dresolved;
5231
5232                         /* Optionally, there's also a short option string specified */
5233                         if (p && p[-1] == ':') {
5234                                 _cleanup_free_ char *options = NULL;
5235
5236                                 r = extract_first_word(&p, &options, NULL, EXTRACT_UNQUOTE);
5237                                 if (r == -ENOMEM)
5238                                         return log_oom();
5239                                 if (r < 0) {
5240                                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s=, ignoring: %s", lvalue, rvalue);
5241                                         return 0;
5242                                 }
5243
5244                                 if (isempty(options) || streq(options, "rbind"))
5245                                         rbind = true;
5246                                 else if (streq(options, "norbind"))
5247                                         rbind = false;
5248                                 else {
5249                                         log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid option string, ignoring setting: %s", options);
5250                                         continue;
5251                                 }
5252                         }
5253                 } else
5254                         d = s;
5255
5256                 r = bind_mount_add(&c->bind_mounts, &c->n_bind_mounts,
5257                                    &(BindMount) {
5258                                            .source = s,
5259                                            .destination = d,
5260                                            .read_only = !!strstr(lvalue, "ReadOnly"),
5261                                            .recursive = rbind,
5262                                            .ignore_enoent = ignore_enoent,
5263                                    });
5264                 if (r < 0)
5265                         return log_oom();
5266         }
5267
5268         return 0;
5269 }
5270
5271 int config_parse_mount_images(
5272                 const char *unit,
5273                 const char *filename,
5274                 unsigned line,
5275                 const char *section,
5276                 unsigned section_line,
5277                 const char *lvalue,
5278                 int ltype,
5279                 const char *rvalue,
5280                 void *data,
5281                 void *userdata) {
5282
5283         ExecContext *c = data;
5284         const Unit *u = userdata;
5285         int r;
5286
5287         assert(filename);
5288         assert(lvalue);
5289         assert(rvalue);
5290         assert(data);
5291
5292         if (isempty(rvalue)) {
5293                 /* Empty assignment resets the list */
5294                 c->mount_images = mount_image_free_many(c->mount_images, &c->n_mount_images);
5295                 return 0;
5296         }
5297
5298         for (const char *p = rvalue;;) {
5299                 _cleanup_(mount_options_free_allp) MountOptions *options = NULL;
5300                 _cleanup_free_ char *first = NULL, *second = NULL, *tuple = NULL;
5301                 _cleanup_free_ char *sresolved = NULL, *dresolved = NULL;
5302                 const char *q = NULL;
5303                 char *s = NULL;
5304                 bool permissive = false;
5305
5306                 r = extract_first_word(&p, &tuple, NULL, EXTRACT_UNQUOTE|EXTRACT_RETAIN_ESCAPE);
5307                 if (r == -ENOMEM)
5308                         return log_oom();
5309                 if (r < 0) {
5310                         log_syntax(unit, LOG_WARNING, filename, line, r,
5311                                    "Invalid syntax %s=%s, ignoring: %m", lvalue, rvalue);
5312                         return 0;
5313                 }
5314                 if (r == 0)
5315                         return 0;
5316
5317                 q = tuple;
5318                 r = extract_many_words(&q, ":", EXTRACT_CUNESCAPE|EXTRACT_UNESCAPE_SEPARATORS, &first, &second, NULL);
5319                 if (r == -ENOMEM)
5320                         return log_oom();
5321                 if (r < 0) {
5322                         log_syntax(unit, LOG_WARNING, filename, line, r,
5323                                    "Invalid syntax in %s=, ignoring: %s", lvalue, tuple);
5324                         return 0;
5325                 }
5326                 if (r == 0)
5327                         continue;
5328
5329                 s = first;
5330                 if (s[0] == '-') {
5331                         permissive = true;
5332                         s++;
5333                 }
5334
5335                 r = unit_path_printf(u, s, &sresolved);
5336                 if (r < 0) {
5337                         log_syntax(unit, LOG_WARNING, filename, line, r,
5338                                    "Failed to resolve unit specifiers in \"%s\", ignoring: %m", s);
5339                         continue;
5340                 }
5341
5342                 r = path_simplify_and_warn(sresolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
5343                 if (r < 0)
5344                         continue;
5345
5346                 if (isempty(second)) {
5347                         log_syntax(unit, LOG_WARNING, filename, line, 0, "Missing destination in %s, ignoring: %s", lvalue, rvalue);
5348                         continue;
5349                 }
5350
5351                 r = unit_path_printf(u, second, &dresolved);
5352                 if (r < 0) {
5353                         log_syntax(unit, LOG_WARNING, filename, line, r,
5354                                         "Failed to resolve specifiers in \"%s\", ignoring: %m", second);
5355                         continue;
5356                 }
5357
5358                 r = path_simplify_and_warn(dresolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
5359                 if (r < 0)
5360                         continue;
5361
5362                 for (;;) {
5363                         _cleanup_free_ char *partition = NULL, *mount_options = NULL, *mount_options_resolved = NULL;
5364                         MountOptions *o = NULL;
5365                         PartitionDesignator partition_designator;
5366
5367                         r = extract_many_words(&q, ":", EXTRACT_CUNESCAPE|EXTRACT_UNESCAPE_SEPARATORS, &partition, &mount_options, NULL);
5368                         if (r == -ENOMEM)
5369                                 return log_oom();
5370                         if (r < 0) {
5371                                 log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", q);
5372                                 return 0;
5373                         }
5374                         if (r == 0)
5375                                 break;
5376                         /* Single set of options, applying to the root partition/single filesystem */
5377                         if (r == 1) {
5378                                 r = unit_full_printf(u, partition, &mount_options_resolved);
5379                                 if (r < 0) {
5380                                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", first);
5381                                         continue;
5382                                 }
5383
5384                                 o = new(MountOptions, 1);
5385                                 if (!o)
5386                                         return log_oom();
5387                                 *o = (MountOptions) {
5388                                         .partition_designator = PARTITION_ROOT,
5389                                         .options = TAKE_PTR(mount_options_resolved),
5390                                 };
5391                                 LIST_APPEND(mount_options, options, o);
5392
5393                                 break;
5394                         }
5395
5396                         partition_designator = partition_designator_from_string(partition);
5397                         if (partition_designator < 0) {
5398                                 log_syntax(unit, LOG_WARNING, filename, line, partition_designator,
5399                                            "Invalid partition name %s, ignoring", partition);
5400                                 continue;
5401                         }
5402                         r = unit_full_printf(u, mount_options, &mount_options_resolved);
5403                         if (r < 0) {
5404                                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", mount_options);
5405                                 continue;
5406                         }
5407
5408                         o = new(MountOptions, 1);
5409                         if (!o)
5410                                 return log_oom();
5411                         *o = (MountOptions) {
5412                                 .partition_designator = partition_designator,
5413                                 .options = TAKE_PTR(mount_options_resolved),
5414                         };
5415                         LIST_APPEND(mount_options, options, o);
5416                 }
5417
5418                 r = mount_image_add(&c->mount_images, &c->n_mount_images,
5419                                     &(MountImage) {
5420                                             .source = sresolved,
5421                                             .destination = dresolved,
5422                                             .mount_options = options,
5423                                             .ignore_enoent = permissive,
5424                                             .type = MOUNT_IMAGE_DISCRETE,
5425                                     });
5426                 if (r < 0)
5427                         return log_oom();
5428         }
5429 }
5430
5431 int config_parse_extension_images(
5432                 const char *unit,
5433                 const char *filename,
5434                 unsigned line,
5435                 const char *section,
5436                 unsigned section_line,
5437                 const char *lvalue,
5438                 int ltype,
5439                 const char *rvalue,
5440                 void *data,
5441                 void *userdata) {
5442
5443         ExecContext *c = data;
5444         const Unit *u = userdata;
5445         int r;
5446
5447         assert(filename);
5448         assert(lvalue);
5449         assert(rvalue);
5450         assert(data);
5451
5452         if (isempty(rvalue)) {
5453                 /* Empty assignment resets the list */
5454                 c->extension_images = mount_image_free_many(c->extension_images, &c->n_extension_images);
5455                 return 0;
5456         }
5457
5458         for (const char *p = rvalue;;) {
5459                 _cleanup_free_ char *source = NULL, *tuple = NULL, *sresolved = NULL;
5460                 _cleanup_(mount_options_free_allp) MountOptions *options = NULL;
5461                 bool permissive = false;
5462                 const char *q = NULL;
5463                 char *s = NULL;
5464
5465                 r = extract_first_word(&p, &tuple, NULL, EXTRACT_UNQUOTE|EXTRACT_RETAIN_ESCAPE);
5466                 if (r == -ENOMEM)
5467                         return log_oom();
5468                 if (r < 0) {
5469                         log_syntax(unit, LOG_WARNING, filename, line, r,
5470                                    "Invalid syntax %s=%s, ignoring: %m", lvalue, rvalue);
5471                         return 0;
5472                 }
5473                 if (r == 0)
5474                         return 0;
5475
5476                 q = tuple;
5477                 r = extract_first_word(&q, &source, ":", EXTRACT_CUNESCAPE|EXTRACT_UNESCAPE_SEPARATORS);
5478                 if (r == -ENOMEM)
5479                         return log_oom();
5480                 if (r < 0) {
5481                         log_syntax(unit, LOG_WARNING, filename, line, r,
5482                                    "Invalid syntax in %s=, ignoring: %s", lvalue, tuple);
5483                         return 0;
5484                 }
5485                 if (r == 0)
5486                         continue;
5487
5488                 s = source;
5489                 if (s[0] == '-') {
5490                         permissive = true;
5491                         s++;
5492                 }
5493
5494                 r = unit_path_printf(u, s, &sresolved);
5495                 if (r < 0) {
5496                         log_syntax(unit, LOG_WARNING, filename, line, r,
5497                                    "Failed to resolve unit specifiers in \"%s\", ignoring: %m", s);
5498                         continue;
5499                 }
5500
5501                 r = path_simplify_and_warn(sresolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
5502                 if (r < 0)
5503                         continue;
5504
5505                 for (;;) {
5506                         _cleanup_free_ char *partition = NULL, *mount_options = NULL, *mount_options_resolved = NULL;
5507                         MountOptions *o = NULL;
5508                         PartitionDesignator partition_designator;
5509
5510                         r = extract_many_words(&q, ":", EXTRACT_CUNESCAPE|EXTRACT_UNESCAPE_SEPARATORS, &partition, &mount_options, NULL);
5511                         if (r == -ENOMEM)
5512                                 return log_oom();
5513                         if (r < 0) {
5514                                 log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", q);
5515                                 return 0;
5516                         }
5517                         if (r == 0)
5518                                 break;
5519                         /* Single set of options, applying to the root partition/single filesystem */
5520                         if (r == 1) {
5521                                 r = unit_full_printf(u, partition, &mount_options_resolved);
5522                                 if (r < 0) {
5523                                         log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", partition);
5524                                         continue;
5525                                 }
5526
5527                                 o = new(MountOptions, 1);
5528                                 if (!o)
5529                                         return log_oom();
5530                                 *o = (MountOptions) {
5531                                         .partition_designator = PARTITION_ROOT,
5532                                         .options = TAKE_PTR(mount_options_resolved),
5533                                 };
5534                                 LIST_APPEND(mount_options, options, o);
5535
5536                                 break;
5537                         }
5538
5539                         partition_designator = partition_designator_from_string(partition);
5540                         if (partition_designator < 0) {
5541                                 log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid partition name %s, ignoring", partition);
5542                                 continue;
5543                         }
5544                         r = unit_full_printf(u, mount_options, &mount_options_resolved);
5545                         if (r < 0) {
5546                                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", mount_options);
5547                                 continue;
5548                         }
5549
5550                         o = new(MountOptions, 1);
5551                         if (!o)
5552                                 return log_oom();
5553                         *o = (MountOptions) {
5554                                 .partition_designator = partition_designator,
5555                                 .options = TAKE_PTR(mount_options_resolved),
5556                         };
5557                         LIST_APPEND(mount_options, options, o);
5558                 }
5559
5560                 r = mount_image_add(&c->extension_images, &c->n_extension_images,
5561                                     &(MountImage) {
5562                                             .source = sresolved,
5563                                             .mount_options = options,
5564                                             .ignore_enoent = permissive,
5565                                             .type = MOUNT_IMAGE_EXTENSION,
5566                                     });
5567                 if (r < 0)
5568                         return log_oom();
5569         }
5570 }
5571
5572 int config_parse_job_timeout_sec(
5573                 const char* unit,
5574                 const char *filename,
5575                 unsigned line,
5576                 const char *section,
5577                 unsigned section_line,
5578                 const char *lvalue,
5579                 int ltype,
5580                 const char *rvalue,
5581                 void *data,
5582                 void *userdata) {
5583
5584         Unit *u = data;
5585         usec_t usec;
5586         int r;
5587
5588         assert(filename);
5589         assert(lvalue);
5590         assert(rvalue);
5591         assert(u);
5592
5593         r = parse_sec_fix_0(rvalue, &usec);
5594         if (r < 0) {
5595                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse JobTimeoutSec= parameter, ignoring: %s", rvalue);
5596                 return 0;
5597         }
5598
5599         /* If the user explicitly changed JobTimeoutSec= also change JobRunningTimeoutSec=, for compatibility with old
5600          * versions. If JobRunningTimeoutSec= was explicitly set, avoid this however as whatever the user picked should
5601          * count. */
5602
5603         if (!u->job_running_timeout_set)
5604                 u->job_running_timeout = usec;
5605
5606         u->job_timeout = usec;
5607
5608         return 0;
5609 }
5610
5611 int config_parse_job_running_timeout_sec(
5612                 const char* unit,
5613                 const char *filename,
5614                 unsigned line,
5615                 const char *section,
5616                 unsigned section_line,
5617                 const char *lvalue,
5618                 int ltype,
5619                 const char *rvalue,
5620                 void *data,
5621                 void *userdata) {
5622
5623         Unit *u = data;
5624         usec_t usec;
5625         int r;
5626
5627         assert(filename);
5628         assert(lvalue);
5629         assert(rvalue);
5630         assert(u);
5631
5632         r = parse_sec_fix_0(rvalue, &usec);
5633         if (r < 0) {
5634                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse JobRunningTimeoutSec= parameter, ignoring: %s", rvalue);
5635                 return 0;
5636         }
5637
5638         u->job_running_timeout = usec;
5639         u->job_running_timeout_set = true;
5640
5641         return 0;
5642 }
5643
5644 int config_parse_emergency_action(
5645                 const char* unit,
5646                 const char *filename,
5647                 unsigned line,
5648                 const char *section,
5649                 unsigned section_line,
5650                 const char *lvalue,
5651                 int ltype,
5652                 const char *rvalue,
5653                 void *data,
5654                 void *userdata) {
5655
5656         Manager *m = NULL;
5657         EmergencyAction *x = data;
5658         int r;
5659
5660         assert(filename);
5661         assert(lvalue);
5662         assert(rvalue);
5663         assert(data);
5664
5665         if (unit)
5666                 m = ((Unit*) userdata)->manager;
5667         else
5668                 m = data;
5669
5670         r = parse_emergency_action(rvalue, MANAGER_IS_SYSTEM(m), x);
5671         if (r < 0) {
5672                 if (r == -EOPNOTSUPP && MANAGER_IS_USER(m)) {
5673                         /* Compat mode: remove for systemd 241. */
5674
5675                         log_syntax(unit, LOG_INFO, filename, line, r,
5676                                    "%s= in user mode specified as \"%s\", using \"exit-force\" instead.",
5677                                    lvalue, rvalue);
5678                         *x = EMERGENCY_ACTION_EXIT_FORCE;
5679                         return 0;
5680                 }
5681
5682                 if (r == -EOPNOTSUPP)
5683                         log_syntax(unit, LOG_WARNING, filename, line, r,
5684                                    "%s= specified as %s mode action, ignoring: %s",
5685                                    lvalue, MANAGER_IS_SYSTEM(m) ? "user" : "system", rvalue);
5686                 else
5687                         log_syntax(unit, LOG_WARNING, filename, line, r,
5688                                    "Failed to parse %s=, ignoring: %s", lvalue, rvalue);
5689                 return 0;
5690         }
5691
5692         return 0;
5693 }
5694
5695 int config_parse_pid_file(
5696                 const char *unit,
5697                 const char *filename,
5698                 unsigned line,
5699                 const char *section,
5700                 unsigned section_line,
5701                 const char *lvalue,
5702                 int ltype,
5703                 const char *rvalue,
5704                 void *data,
5705                 void *userdata) {
5706
5707         _cleanup_free_ char *k = NULL, *n = NULL;
5708         const Unit *u = userdata;
5709         char **s = data;
5710         int r;
5711
5712         assert(filename);
5713         assert(lvalue);
5714         assert(rvalue);
5715         assert(u);
5716
5717         if (isempty(rvalue)) {
5718                 /* An empty assignment removes already set value. */
5719                 *s = mfree(*s);
5720                 return 0;
5721         }
5722
5723         r = unit_path_printf(u, rvalue, &k);
5724         if (r < 0) {
5725                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
5726                 return 0;
5727         }
5728
5729         /* If this is a relative path make it absolute by prefixing the /run */
5730         n = path_make_absolute(k, u->manager->prefix[EXEC_DIRECTORY_RUNTIME]);
5731         if (!n)
5732                 return log_oom();
5733
5734         /* Check that the result is a sensible path */
5735         r = path_simplify_and_warn(n, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
5736         if (r < 0)
5737                 return r;
5738
5739         r = patch_var_run(unit, filename, line, lvalue, &n);
5740         if (r < 0)
5741                 return r;
5742
5743         free_and_replace(*s, n);
5744         return 0;
5745 }
5746
5747 int config_parse_exit_status(
5748                 const char *unit,
5749                 const char *filename,
5750                 unsigned line,
5751                 const char *section,
5752                 unsigned section_line,
5753                 const char *lvalue,
5754                 int ltype,
5755                 const char *rvalue,
5756                 void *data,
5757                 void *userdata) {
5758
5759         int *exit_status = data, r;
5760         uint8_t u;
5761
5762         assert(filename);
5763         assert(lvalue);
5764         assert(rvalue);
5765         assert(exit_status);
5766
5767         if (isempty(rvalue)) {
5768                 *exit_status = -1;
5769                 return 0;
5770         }
5771
5772         r = safe_atou8(rvalue, &u);
5773         if (r < 0) {
5774                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse exit status '%s', ignoring: %m", rvalue);
5775                 return 0;
5776         }
5777
5778         *exit_status = u;
5779         return 0;
5780 }
5781
5782 int config_parse_disable_controllers(
5783                 const char *unit,
5784                 const char *filename,
5785                 unsigned line,
5786                 const char *section,
5787                 unsigned section_line,
5788                 const char *lvalue,
5789                 int ltype,
5790                 const char *rvalue,
5791                 void *data,
5792                 void *userdata) {
5793
5794         int r;
5795         CGroupContext *c = data;
5796         CGroupMask disabled_mask;
5797
5798         /* 1. If empty, make all controllers eligible for use again.
5799          * 2. If non-empty, merge all listed controllers, space separated. */
5800
5801         if (isempty(rvalue)) {
5802                 c->disable_controllers = 0;
5803                 return 0;
5804         }
5805
5806         r = cg_mask_from_string(rvalue, &disabled_mask);
5807         if (r < 0 || disabled_mask <= 0) {
5808                 log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid cgroup string: %s, ignoring", rvalue);
5809                 return 0;
5810         }
5811
5812         c->disable_controllers |= disabled_mask;
5813
5814         return 0;
5815 }
5816
5817 int config_parse_ip_filter_bpf_progs(
5818                 const char *unit,
5819                 const char *filename,
5820                 unsigned line,
5821                 const char *section,
5822                 unsigned section_line,
5823                 const char *lvalue,
5824                 int ltype,
5825                 const char *rvalue,
5826                 void *data,
5827                 void *userdata) {
5828
5829         _cleanup_free_ char *resolved = NULL;
5830         const Unit *u = userdata;
5831         char ***paths = data;
5832         int r;
5833
5834         assert(filename);
5835         assert(lvalue);
5836         assert(rvalue);
5837         assert(paths);
5838
5839         if (isempty(rvalue)) {
5840                 *paths = strv_free(*paths);
5841                 return 0;
5842         }
5843
5844         r = unit_path_printf(u, rvalue, &resolved);
5845         if (r < 0) {
5846                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
5847                 return 0;
5848         }
5849
5850         r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
5851         if (r < 0)
5852                 return 0;
5853
5854         if (strv_contains(*paths, resolved))
5855                 return 0;
5856
5857         r = strv_extend(paths, resolved);
5858         if (r < 0)
5859                 return log_oom();
5860
5861         r = bpf_firewall_supported();
5862         if (r < 0)
5863                 return r;
5864         if (r != BPF_FIREWALL_SUPPORTED_WITH_MULTI) {
5865                 static bool warned = false;
5866
5867                 log_full(warned ? LOG_DEBUG : LOG_WARNING,
5868                          "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"
5869                          "Starting this unit will fail! (This warning is only shown for the first loaded unit using IP firewalling.)", filename, line, lvalue, rvalue);
5870
5871                 warned = true;
5872         }
5873
5874         return 0;
5875 }
5876
5877 int config_parse_bpf_foreign_program(
5878                 const char *unit,
5879                 const char *filename,
5880                 unsigned line,
5881                 const char *section,
5882                 unsigned section_line,
5883                 const char *lvalue,
5884                 int ltype,
5885                 const char *rvalue,
5886                 void *data,
5887                 void *userdata) {
5888         _cleanup_free_ char *resolved = NULL, *word = NULL;
5889         CGroupContext *c = data;
5890         const char *p = rvalue;
5891         Unit *u = userdata;
5892         int attach_type, r;
5893
5894         assert(filename);
5895         assert(lvalue);
5896         assert(rvalue);
5897
5898         if (isempty(rvalue)) {
5899                 while (c->bpf_foreign_programs)
5900                         cgroup_context_remove_bpf_foreign_program(c, c->bpf_foreign_programs);
5901
5902                 return 0;
5903         }
5904
5905         r = extract_first_word(&p, &word, ":", 0);
5906         if (r == -ENOMEM)
5907                 return log_oom();
5908         if (r < 0) {
5909                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse foreign BPF program, ignoring: %s", rvalue);
5910                 return 0;
5911         }
5912         if (r == 0 || isempty(p)) {
5913                 log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid syntax in %s=, ignoring: %s", lvalue, rvalue);
5914                 return 0;
5915         }
5916
5917         attach_type = bpf_cgroup_attach_type_from_string(word);
5918         if (attach_type < 0) {
5919                 log_syntax(unit, LOG_WARNING, filename, line, 0, "Unknown BPF attach type=%s, ignoring: %s", word, rvalue);
5920                 return 0;
5921         }
5922
5923         r = unit_path_printf(u, p, &resolved);
5924         if (r < 0) {
5925                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %s", p, rvalue);
5926                 return 0;
5927         }
5928
5929         r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
5930         if (r < 0)
5931                 return 0;
5932
5933         r = cgroup_add_bpf_foreign_program(c, attach_type, resolved);
5934         if (r < 0)
5935                 return log_error_errno(r, "Failed to add foreign BPF program to cgroup context: %m");
5936
5937         return 0;
5938 }
5939
5940 int config_parse_cgroup_socket_bind(
5941                 const char *unit,
5942                 const char *filename,
5943                 unsigned line,
5944                 const char *section,
5945                 unsigned section_line,
5946                 const char *lvalue,
5947                 int ltype,
5948                 const char *rvalue,
5949                 void *data,
5950                 void *userdata) {
5951         _cleanup_free_ CGroupSocketBindItem *item = NULL;
5952         CGroupSocketBindItem **head = data;
5953         uint16_t nr_ports, port_min;
5954         int af, ip_protocol, r;
5955
5956         if (isempty(rvalue)) {
5957                 cgroup_context_remove_socket_bind(head);
5958                 return 0;
5959         }
5960
5961         r = parse_socket_bind_item(rvalue, &af, &ip_protocol, &nr_ports, &port_min);
5962         if (r == -ENOMEM)
5963                 return log_oom();
5964         if (r < 0) {
5965                 log_syntax(unit, LOG_WARNING, filename, line, r,
5966                            "Unable to parse %s= assignment, ignoring: %s", lvalue, rvalue);
5967                 return 0;
5968         }
5969
5970         item = new(CGroupSocketBindItem, 1);
5971         if (!item)
5972                 return log_oom();
5973         *item = (CGroupSocketBindItem) {
5974                 .address_family = af,
5975                 .ip_protocol = ip_protocol,
5976                 .nr_ports = nr_ports,
5977                 .port_min = port_min,
5978         };
5979
5980         LIST_PREPEND(socket_bind_items, *head, TAKE_PTR(item));
5981
5982         return 0;
5983 }
5984
5985 int config_parse_restrict_network_interfaces(
5986                 const char *unit,
5987                 const char *filename,
5988                 unsigned line,
5989                 const char *section,
5990                 unsigned section_line,
5991                 const char *lvalue,
5992                 int ltype,
5993                 const char *rvalue,
5994                 void *data,
5995                 void *userdata) {
5996         CGroupContext *c = data;
5997         bool is_allow_rule = true;
5998         int r;
5999
6000         assert(filename);
6001         assert(lvalue);
6002         assert(rvalue);
6003         assert(data);
6004
6005         if (isempty(rvalue)) {
6006                 /* Empty assignment resets the list */
6007                 c->restrict_network_interfaces = set_free(c->restrict_network_interfaces);
6008                 return 0;
6009         }
6010
6011         if (rvalue[0] == '~') {
6012                 is_allow_rule = false;
6013                 rvalue++;
6014         }
6015
6016         if (set_isempty(c->restrict_network_interfaces))
6017                 /* Only initialize this when creating the set */
6018                 c->restrict_network_interfaces_is_allow_list = is_allow_rule;
6019
6020         for (const char *p = rvalue;;) {
6021                 _cleanup_free_ char *word = NULL;
6022
6023                 r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
6024                 if (r == 0)
6025                         break;
6026                 if (r == -ENOMEM)
6027                         return log_oom();
6028                 if (r < 0) {
6029                         log_syntax(unit, LOG_WARNING, filename, line, r,
6030                                    "Trailing garbage in %s, ignoring: %s", lvalue, rvalue);
6031                         break;
6032                 }
6033
6034                 if (!ifname_valid(word)) {
6035                         log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid interface name, ignoring: %s", word);
6036                         continue;
6037                 }
6038
6039                 if (c->restrict_network_interfaces_is_allow_list != is_allow_rule)
6040                         free(set_remove(c->restrict_network_interfaces, word));
6041                 else {
6042                         r = set_put_strdup(&c->restrict_network_interfaces, word);
6043                         if (r < 0)
6044                                 return log_oom();
6045                 }
6046         }
6047
6048         return 0;
6049 }
6050
6051 static int merge_by_names(Unit **u, Set *names, const char *id) {
6052         char *k;
6053         int r;
6054
6055         assert(u);
6056         assert(*u);
6057
6058         /* Let's try to add in all names that are aliases of this unit */
6059         while ((k = set_steal_first(names))) {
6060                 _cleanup_free_ _unused_ char *free_k = k;
6061
6062                 /* First try to merge in the other name into our unit */
6063                 r = unit_merge_by_name(*u, k);
6064                 if (r < 0) {
6065                         Unit *other;
6066
6067                         /* Hmm, we couldn't merge the other unit into ours? Then let's try it the other way
6068                          * round. */
6069
6070                         other = manager_get_unit((*u)->manager, k);
6071                         if (!other)
6072                                 return r; /* return previous failure */
6073
6074                         r = unit_merge(other, *u);
6075                         if (r < 0)
6076                                 return r;
6077
6078                         *u = other;
6079                         return merge_by_names(u, names, NULL);
6080                 }
6081
6082                 if (streq_ptr(id, k))
6083                         unit_choose_id(*u, id);
6084         }
6085
6086         return 0;
6087 }
6088
6089 int unit_load_fragment(Unit *u) {
6090         const char *fragment;
6091         _cleanup_set_free_free_ Set *names = NULL;
6092         int r;
6093
6094         assert(u);
6095         assert(u->load_state == UNIT_STUB);
6096         assert(u->id);
6097
6098         if (u->transient) {
6099                 u->load_state = UNIT_LOADED;
6100                 return 0;
6101         }
6102
6103         /* Possibly rebuild the fragment map to catch new units */
6104         r = unit_file_build_name_map(&u->manager->lookup_paths,
6105                                      &u->manager->unit_cache_timestamp_hash,
6106                                      &u->manager->unit_id_map,
6107                                      &u->manager->unit_name_map,
6108                                      &u->manager->unit_path_cache);
6109         if (r < 0)
6110                 return log_error_errno(r, "Failed to rebuild name map: %m");
6111
6112         r = unit_file_find_fragment(u->manager->unit_id_map,
6113                                     u->manager->unit_name_map,
6114                                     u->id,
6115                                     &fragment,
6116                                     &names);
6117         if (r < 0 && r != -ENOENT)
6118                 return r;
6119
6120         if (fragment) {
6121                 /* Open the file, check if this is a mask, otherwise read. */
6122                 _cleanup_fclose_ FILE *f = NULL;
6123                 struct stat st;
6124
6125                 /* Try to open the file name. A symlink is OK, for example for linked files or masks. We
6126                  * expect that all symlinks within the lookup paths have been already resolved, but we don't
6127                  * verify this here. */
6128                 f = fopen(fragment, "re");
6129                 if (!f)
6130                         return log_unit_notice_errno(u, errno, "Failed to open %s: %m", fragment);
6131
6132                 if (fstat(fileno(f), &st) < 0)
6133                         return -errno;
6134
6135                 r = free_and_strdup(&u->fragment_path, fragment);
6136                 if (r < 0)
6137                         return r;
6138
6139                 if (null_or_empty(&st)) {
6140                         /* Unit file is masked */
6141
6142                         u->load_state = u->perpetual ? UNIT_LOADED : UNIT_MASKED; /* don't allow perpetual units to ever be masked */
6143                         u->fragment_mtime = 0;
6144                 } else {
6145                         u->load_state = UNIT_LOADED;
6146                         u->fragment_mtime = timespec_load(&st.st_mtim);
6147
6148                         /* Now, parse the file contents */
6149                         r = config_parse(u->id, fragment, f,
6150                                          UNIT_VTABLE(u)->sections,
6151                                          config_item_perf_lookup, load_fragment_gperf_lookup,
6152                                          0,
6153                                          u,
6154                                          NULL);
6155                         if (r == -ENOEXEC)
6156                                 log_unit_notice_errno(u, r, "Unit configuration has fatal error, unit will not be started.");
6157                         if (r < 0)
6158                                 return r;
6159                 }
6160         }
6161
6162         /* Call merge_by_names with the name derived from the fragment path as the preferred name.
6163          *
6164          * We do the merge dance here because for some unit types, the unit might have aliases which are not
6165          * declared in the file system. In particular, this is true (and frequent) for device and swap units.
6166          */
6167         const char *id = u->id;
6168         _cleanup_free_ char *free_id = NULL;
6169
6170         if (fragment) {
6171                 id = basename(fragment);
6172                 if (unit_name_is_valid(id, UNIT_NAME_TEMPLATE)) {
6173                         assert(u->instance); /* If we're not trying to use a template for non-instanced unit,
6174                                               * this must be set. */
6175
6176                         r = unit_name_replace_instance(id, u->instance, &free_id);
6177                         if (r < 0)
6178                                 return log_debug_errno(r, "Failed to build id (%s + %s): %m", id, u->instance);
6179                         id = free_id;
6180                 }
6181         }
6182
6183         Unit *merged = u;
6184         r = merge_by_names(&merged, names, id);
6185         if (r < 0)
6186                 return r;
6187
6188         if (merged != u)
6189                 u->load_state = UNIT_MERGED;
6190
6191         return 0;
6192 }
6193
6194 void unit_dump_config_items(FILE *f) {
6195         static const struct {
6196                 const ConfigParserCallback callback;
6197                 const char *rvalue;
6198         } table[] = {
6199                 { config_parse_warn_compat,           "NOTSUPPORTED" },
6200                 { config_parse_int,                   "INTEGER" },
6201                 { config_parse_unsigned,              "UNSIGNED" },
6202                 { config_parse_iec_size,              "SIZE" },
6203                 { config_parse_iec_uint64,            "SIZE" },
6204                 { config_parse_si_uint64,             "SIZE" },
6205                 { config_parse_bool,                  "BOOLEAN" },
6206                 { config_parse_string,                "STRING" },
6207                 { config_parse_path,                  "PATH" },
6208                 { config_parse_unit_path_printf,      "PATH" },
6209                 { config_parse_colon_separated_paths, "PATH" },
6210                 { config_parse_strv,                  "STRING [...]" },
6211                 { config_parse_exec_nice,             "NICE" },
6212                 { config_parse_exec_oom_score_adjust, "OOMSCOREADJUST" },
6213                 { config_parse_exec_io_class,         "IOCLASS" },
6214                 { config_parse_exec_io_priority,      "IOPRIORITY" },
6215                 { config_parse_exec_cpu_sched_policy, "CPUSCHEDPOLICY" },
6216                 { config_parse_exec_cpu_sched_prio,   "CPUSCHEDPRIO" },
6217                 { config_parse_exec_cpu_affinity,     "CPUAFFINITY" },
6218                 { config_parse_mode,                  "MODE" },
6219                 { config_parse_unit_env_file,         "FILE" },
6220                 { config_parse_exec_output,           "OUTPUT" },
6221                 { config_parse_exec_input,            "INPUT" },
6222                 { config_parse_log_facility,          "FACILITY" },
6223                 { config_parse_log_level,             "LEVEL" },
6224                 { config_parse_exec_secure_bits,      "SECUREBITS" },
6225                 { config_parse_capability_set,        "BOUNDINGSET" },
6226                 { config_parse_rlimit,                "LIMIT" },
6227                 { config_parse_unit_deps,             "UNIT [...]" },
6228                 { config_parse_exec,                  "PATH [ARGUMENT [...]]" },
6229                 { config_parse_service_type,          "SERVICETYPE" },
6230                 { config_parse_service_exit_type,     "SERVICEEXITTYPE" },
6231                 { config_parse_service_restart,       "SERVICERESTART" },
6232                 { config_parse_service_timeout_failure_mode, "TIMEOUTMODE" },
6233                 { config_parse_kill_mode,             "KILLMODE" },
6234                 { config_parse_signal,                "SIGNAL" },
6235                 { config_parse_socket_listen,         "SOCKET [...]" },
6236                 { config_parse_socket_bind,           "SOCKETBIND" },
6237                 { config_parse_socket_bindtodevice,   "NETWORKINTERFACE" },
6238                 { config_parse_sec,                   "SECONDS" },
6239                 { config_parse_nsec,                  "NANOSECONDS" },
6240                 { config_parse_namespace_path_strv,   "PATH [...]" },
6241                 { config_parse_bind_paths,            "PATH[:PATH[:OPTIONS]] [...]" },
6242                 { config_parse_unit_requires_mounts_for, "PATH [...]" },
6243                 { config_parse_exec_mount_flags,      "MOUNTFLAG [...]" },
6244                 { config_parse_unit_string_printf,    "STRING" },
6245                 { config_parse_trigger_unit,          "UNIT" },
6246                 { config_parse_timer,                 "TIMER" },
6247                 { config_parse_path_spec,             "PATH" },
6248                 { config_parse_notify_access,         "ACCESS" },
6249                 { config_parse_ip_tos,                "TOS" },
6250                 { config_parse_unit_condition_path,   "CONDITION" },
6251                 { config_parse_unit_condition_string, "CONDITION" },
6252                 { config_parse_unit_slice,            "SLICE" },
6253                 { config_parse_documentation,         "URL" },
6254                 { config_parse_service_timeout,       "SECONDS" },
6255                 { config_parse_emergency_action,      "ACTION" },
6256                 { config_parse_set_status,            "STATUS" },
6257                 { config_parse_service_sockets,       "SOCKETS" },
6258                 { config_parse_environ,               "ENVIRON" },
6259 #if HAVE_SECCOMP
6260                 { config_parse_syscall_filter,        "SYSCALLS" },
6261                 { config_parse_syscall_archs,         "ARCHS" },
6262                 { config_parse_syscall_errno,         "ERRNO" },
6263                 { config_parse_syscall_log,           "SYSCALLS" },
6264                 { config_parse_address_families,      "FAMILIES" },
6265                 { config_parse_restrict_namespaces,   "NAMESPACES"  },
6266 #endif
6267                 { config_parse_restrict_filesystems,  "FILESYSTEMS"  },
6268                 { config_parse_cpu_shares,            "SHARES" },
6269                 { config_parse_cg_weight,             "WEIGHT" },
6270                 { config_parse_memory_limit,          "LIMIT" },
6271                 { config_parse_device_allow,          "DEVICE" },
6272                 { config_parse_device_policy,         "POLICY" },
6273                 { config_parse_io_limit,              "LIMIT" },
6274                 { config_parse_io_device_weight,      "DEVICEWEIGHT" },
6275                 { config_parse_io_device_latency,     "DEVICELATENCY" },
6276                 { config_parse_blockio_bandwidth,     "BANDWIDTH" },
6277                 { config_parse_blockio_weight,        "WEIGHT" },
6278                 { config_parse_blockio_device_weight, "DEVICEWEIGHT" },
6279                 { config_parse_long,                  "LONG" },
6280                 { config_parse_socket_service,        "SERVICE" },
6281 #if HAVE_SELINUX
6282                 { config_parse_exec_selinux_context,  "LABEL" },
6283 #endif
6284                 { config_parse_job_mode,              "MODE" },
6285                 { config_parse_job_mode_isolate,      "BOOLEAN" },
6286                 { config_parse_personality,           "PERSONALITY" },
6287         };
6288
6289         const char *prev = NULL;
6290         const char *i;
6291
6292         assert(f);
6293
6294         NULSTR_FOREACH(i, load_fragment_gperf_nulstr) {
6295                 const char *rvalue = "OTHER", *lvalue;
6296                 const ConfigPerfItem *p;
6297                 const char *dot;
6298
6299                 assert_se(p = load_fragment_gperf_lookup(i, strlen(i)));
6300
6301                 /* Hide legacy settings */
6302                 if (p->parse == config_parse_warn_compat &&
6303                     p->ltype == DISABLED_LEGACY)
6304                         continue;
6305
6306                 for (size_t j = 0; j < ELEMENTSOF(table); j++)
6307                         if (p->parse == table[j].callback) {
6308                                 rvalue = table[j].rvalue;
6309                                 break;
6310                         }
6311
6312                 dot = strchr(i, '.');
6313                 lvalue = dot ? dot + 1 : i;
6314
6315                 if (dot) {
6316                         size_t prefix_len = dot - i;
6317
6318                         if (!prev || !strneq(prev, i, prefix_len+1)) {
6319                                 if (prev)
6320                                         fputc('\n', f);
6321
6322                                 fprintf(f, "[%.*s]\n", (int) prefix_len, i);
6323                         }
6324                 }
6325
6326                 fprintf(f, "%s=%s\n", lvalue, rvalue);
6327                 prev = i;
6328         }
6329 }
6330
6331 int config_parse_cpu_affinity2(
6332                 const char *unit,
6333                 const char *filename,
6334                 unsigned line,
6335                 const char *section,
6336                 unsigned section_line,
6337                 const char *lvalue,
6338                 int ltype,
6339                 const char *rvalue,
6340                 void *data,
6341                 void *userdata) {
6342
6343         CPUSet *affinity = data;
6344
6345         assert(affinity);
6346
6347         (void) parse_cpu_set_extend(rvalue, affinity, true, unit, filename, line, lvalue);
6348
6349         return 0;
6350 }
6351
6352 int config_parse_show_status(
6353                 const char* unit,
6354                 const char *filename,
6355                 unsigned line,
6356                 const char *section,
6357                 unsigned section_line,
6358                 const char *lvalue,
6359                 int ltype,
6360                 const char *rvalue,
6361                 void *data,
6362                 void *userdata) {
6363
6364         int k;
6365         ShowStatus *b = data;
6366
6367         assert(filename);
6368         assert(lvalue);
6369         assert(rvalue);
6370         assert(data);
6371
6372         k = parse_show_status(rvalue, b);
6373         if (k < 0)
6374                 log_syntax(unit, LOG_WARNING, filename, line, k, "Failed to parse show status setting, ignoring: %s", rvalue);
6375
6376         return 0;
6377 }
6378
6379 int config_parse_output_restricted(
6380                 const char* unit,
6381                 const char *filename,
6382                 unsigned line,
6383                 const char *section,
6384                 unsigned section_line,
6385                 const char *lvalue,
6386                 int ltype,
6387                 const char *rvalue,
6388                 void *data,
6389                 void *userdata) {
6390
6391         ExecOutput t, *eo = data;
6392         bool obsolete = false;
6393
6394         assert(filename);
6395         assert(lvalue);
6396         assert(rvalue);
6397         assert(data);
6398
6399         if (streq(rvalue, "syslog")) {
6400                 t = EXEC_OUTPUT_JOURNAL;
6401                 obsolete = true;
6402         } else if (streq(rvalue, "syslog+console")) {
6403                 t = EXEC_OUTPUT_JOURNAL_AND_CONSOLE;
6404                 obsolete = true;
6405         } else {
6406                 t = exec_output_from_string(rvalue);
6407                 if (t < 0) {
6408                         log_syntax(unit, LOG_WARNING, filename, line, t, "Failed to parse output type, ignoring: %s", rvalue);
6409                         return 0;
6410                 }
6411
6412                 if (IN_SET(t, EXEC_OUTPUT_SOCKET, EXEC_OUTPUT_NAMED_FD, EXEC_OUTPUT_FILE, EXEC_OUTPUT_FILE_APPEND, EXEC_OUTPUT_FILE_TRUNCATE)) {
6413                         log_syntax(unit, LOG_WARNING, filename, line, 0, "Standard output types socket, fd:, file:, append:, truncate: are not supported as defaults, ignoring: %s", rvalue);
6414                         return 0;
6415                 }
6416         }
6417
6418         if (obsolete)
6419                 log_syntax(unit, LOG_NOTICE, filename, line, 0,
6420                            "Standard output type %s is obsolete, automatically updating to %s. Please update your configuration.",
6421                            rvalue, exec_output_to_string(t));
6422
6423         *eo = t;
6424         return 0;
6425 }
6426
6427 int config_parse_crash_chvt(
6428                 const char* unit,
6429                 const char *filename,
6430                 unsigned line,
6431                 const char *section,
6432                 unsigned section_line,
6433                 const char *lvalue,
6434                 int ltype,
6435                 const char *rvalue,
6436                 void *data,
6437                 void *userdata) {
6438
6439         int r;
6440
6441         assert(filename);
6442         assert(lvalue);
6443         assert(rvalue);
6444         assert(data);
6445
6446         r = parse_crash_chvt(rvalue, data);
6447         if (r < 0)
6448                 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse CrashChangeVT= setting, ignoring: %s", rvalue);
6449
6450         return 0;
6451 }
6452
6453 int config_parse_swap_priority(
6454                 const char *unit,
6455                 const char *filename,
6456                 unsigned line,
6457                 const char *section,
6458                 unsigned section_line,
6459                 const char *lvalue,
6460                 int ltype,
6461                 const char *rvalue,
6462                 void *data,
6463                 void *userdata) {
6464
6465         Swap *s = userdata;
6466         int r, priority;
6467
6468         assert(s);
6469         assert(filename);
6470         assert(lvalue);
6471         assert(rvalue);
6472         assert(data);
6473
6474         if (isempty(rvalue)) {
6475                 s->parameters_fragment.priority = -1;
6476                 s->parameters_fragment.priority_set = false;
6477                 return 0;
6478         }
6479
6480         r = safe_atoi(rvalue, &priority);
6481         if (r < 0) {
6482                 log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid swap priority '%s', ignoring.", rvalue);
6483                 return 0;
6484         }
6485
6486         if (priority < -1) {
6487                 log_syntax(unit, LOG_WARNING, filename, line, 0, "Sorry, swap priorities smaller than -1 may only be assigned by the kernel itself, ignoring: %s", rvalue);
6488                 return 0;
6489         }
6490
6491         if (priority > 32767) {
6492                 log_syntax(unit, LOG_WARNING, filename, line, 0, "Swap priority out of range, ignoring: %s", rvalue);
6493                 return 0;
6494         }
6495
6496         s->parameters_fragment.priority = priority;
6497         s->parameters_fragment.priority_set = true;
6498         return 0;
6499 }
6500
6501 int config_parse_watchdog_sec(
6502                 const char *unit,
6503                 const char *filename,
6504                 unsigned line,
6505                 const char *section,
6506                 unsigned section_line,
6507                 const char *lvalue,
6508                 int ltype,
6509                 const char *rvalue,
6510                 void *data,
6511                 void *userdata) {
6512
6513         usec_t *usec = data;
6514
6515         assert(filename);
6516         assert(lvalue);
6517         assert(rvalue);
6518
6519         /* This is called for {Runtime,Reboot,KExec}WatchdogSec= where "default" maps to
6520          * USEC_INFINITY internally. */
6521
6522         if (streq(rvalue, "default"))
6523                 *usec = USEC_INFINITY;
6524         else if (streq(rvalue, "off"))
6525                 *usec = 0;
6526         else
6527                 return config_parse_sec(unit, filename, line, section, section_line, lvalue, ltype, rvalue, data, userdata);
6528
6529         return 0;
6530 }
6531
6532 int config_parse_tty_size(
6533                 const char *unit,
6534                 const char *filename,
6535                 unsigned line,
6536                 const char *section,
6537                 unsigned section_line,
6538                 const char *lvalue,
6539                 int ltype,
6540                 const char *rvalue,
6541                 void *data,
6542                 void *userdata) {
6543
6544         unsigned *sz = data;
6545
6546         assert(filename);
6547         assert(lvalue);
6548         assert(rvalue);
6549
6550         if (isempty(rvalue)) {
6551                 *sz = UINT_MAX;
6552                 return 0;
6553         }
6554
6555         return config_parse_unsigned(unit, filename, line, section, section_line, lvalue, ltype, rvalue, data, userdata);
6556 }