src/core/dbus-execute.c

   1 /***
   2   This file is part of systemd.
   3
   4   Copyright 2010 Lennart Poettering
   5
   6   systemd is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU Lesser General Public License as published by
   8   the Free Software Foundation; either version 2.1 of the License, or
   9   (at your option) any later version.
  10
  11   systemd is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   Lesser General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  18 ***/
  19
  20 #include <sys/prctl.h>
  21
  22 #ifdef HAVE_SECCOMP
  23 #include <seccomp.h>
  24 #endif
  25
  26 #include "af-list.h"
  27 #include "alloc-util.h"
  28 #include "bus-util.h"
  29 #include "capability-util.h"
  30 #include "dbus-execute.h"
  31 #include "env-util.h"
  32 #include "execute.h"
  33 #include "fd-util.h"
  34 #include "fileio.h"
  35 #include "ioprio.h"
  36 #include "missing.h"
  37 #include "namespace.h"
  38 #include "parse-util.h"
  39 #include "path-util.h"
  40 #include "process-util.h"
  41 #include "rlimit-util.h"
  42 #ifdef HAVE_SECCOMP
  43 #include "seccomp-util.h"
  44 #endif
  45 #include "strv.h"
  46 #include "syslog-util.h"
  47 #include "user-util.h"
  48 #include "utf8.h"
  49
  50 BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_exec_output, exec_output, ExecOutput);
  51
  52 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_exec_input, exec_input, ExecInput);
  53
  54 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_exec_utmp_mode, exec_utmp_mode, ExecUtmpMode);
  55
  56 static BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_protect_home, protect_home, ProtectHome);
  57 static BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_protect_system, protect_system, ProtectSystem);
  58
  59 static int property_get_environment_files(
  60                 sd_bus *bus,
  61                 const char *path,
  62                 const char *interface,
  63                 const char *property,
  64                 sd_bus_message *reply,
  65                 void *userdata,
  66                 sd_bus_error *error) {
  67
  68         ExecContext *c = userdata;
  69         char **j;
  70         int r;
  71
  72         assert(bus);
  73         assert(reply);
  74         assert(c);
  75
  76         r = sd_bus_message_open_container(reply, 'a', "(sb)");
  77         if (r < 0)
  78                 return r;
  79
  80         STRV_FOREACH(j, c->environment_files) {
  81                 const char *fn = *j;
  82
  83                 r = sd_bus_message_append(reply, "(sb)", fn[0] == '-' ? fn + 1 : fn, fn[0] == '-');
  84                 if (r < 0)
  85                         return r;
  86         }
  87
  88         return sd_bus_message_close_container(reply);
  89 }
  90
  91 static int property_get_oom_score_adjust(
  92                 sd_bus *bus,
  93                 const char *path,
  94                 const char *interface,
  95                 const char *property,
  96                 sd_bus_message *reply,
  97                 void *userdata,
  98                 sd_bus_error *error) {
  99
 100
 101         ExecContext *c = userdata;
 102         int32_t n;
 103
 104         assert(bus);
 105         assert(reply);
 106         assert(c);
 107
 108         if (c->oom_score_adjust_set)
 109                 n = c->oom_score_adjust;
 110         else {
 111                 _cleanup_free_ char *t = NULL;
 112
 113                 n = 0;
 114                 if (read_one_line_file("/proc/self/oom_score_adj", &t) >= 0)
 115                         safe_atoi32(t, &n);
 116         }
 117
 118         return sd_bus_message_append(reply, "i", n);
 119 }
 120
 121 static int property_get_nice(
 122                 sd_bus *bus,
 123                 const char *path,
 124                 const char *interface,
 125                 const char *property,
 126                 sd_bus_message *reply,
 127                 void *userdata,
 128                 sd_bus_error *error) {
 129
 130
 131         ExecContext *c = userdata;
 132         int32_t n;
 133
 134         assert(bus);
 135         assert(reply);
 136         assert(c);
 137
 138         if (c->nice_set)
 139                 n = c->nice;
 140         else {
 141                 errno = 0;
 142                 n = getpriority(PRIO_PROCESS, 0);
 143                 if (errno > 0)
 144                         n = 0;
 145         }
 146
 147         return sd_bus_message_append(reply, "i", n);
 148 }
 149
 150 static int property_get_ioprio(
 151                 sd_bus *bus,
 152                 const char *path,
 153                 const char *interface,
 154                 const char *property,
 155                 sd_bus_message *reply,
 156                 void *userdata,
 157                 sd_bus_error *error) {
 158
 159
 160         ExecContext *c = userdata;
 161         int32_t n;
 162
 163         assert(bus);
 164         assert(reply);
 165         assert(c);
 166
 167         if (c->ioprio_set)
 168                 n = c->ioprio;
 169         else {
 170                 n = ioprio_get(IOPRIO_WHO_PROCESS, 0);
 171                 if (n < 0)
 172                         n = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 4);
 173         }
 174
 175         return sd_bus_message_append(reply, "i", n);
 176 }
 177
 178 static int property_get_cpu_sched_policy(
 179                 sd_bus *bus,
 180                 const char *path,
 181                 const char *interface,
 182                 const char *property,
 183                 sd_bus_message *reply,
 184                 void *userdata,
 185                 sd_bus_error *error) {
 186
 187         ExecContext *c = userdata;
 188         int32_t n;
 189
 190         assert(bus);
 191         assert(reply);
 192         assert(c);
 193
 194         if (c->cpu_sched_set)
 195                 n = c->cpu_sched_policy;
 196         else {
 197                 n = sched_getscheduler(0);
 198                 if (n < 0)
 199                         n = SCHED_OTHER;
 200         }
 201
 202         return sd_bus_message_append(reply, "i", n);
 203 }
 204
 205 static int property_get_cpu_sched_priority(
 206                 sd_bus *bus,
 207                 const char *path,
 208                 const char *interface,
 209                 const char *property,
 210                 sd_bus_message *reply,
 211                 void *userdata,
 212                 sd_bus_error *error) {
 213
 214         ExecContext *c = userdata;
 215         int32_t n;
 216
 217         assert(bus);
 218         assert(reply);
 219         assert(c);
 220
 221         if (c->cpu_sched_set)
 222                 n = c->cpu_sched_priority;
 223         else {
 224                 struct sched_param p = {};
 225
 226                 if (sched_getparam(0, &p) >= 0)
 227                         n = p.sched_priority;
 228                 else
 229                         n = 0;
 230         }
 231
 232         return sd_bus_message_append(reply, "i", n);
 233 }
 234
 235 static int property_get_cpu_affinity(
 236                 sd_bus *bus,
 237                 const char *path,
 238                 const char *interface,
 239                 const char *property,
 240                 sd_bus_message *reply,
 241                 void *userdata,
 242                 sd_bus_error *error) {
 243
 244         ExecContext *c = userdata;
 245
 246         assert(bus);
 247         assert(reply);
 248         assert(c);
 249
 250         if (c->cpuset)
 251                 return sd_bus_message_append_array(reply, 'y', c->cpuset, CPU_ALLOC_SIZE(c->cpuset_ncpus));
 252         else
 253                 return sd_bus_message_append_array(reply, 'y', NULL, 0);
 254 }
 255
 256 static int property_get_timer_slack_nsec(
 257                 sd_bus *bus,
 258                 const char *path,
 259                 const char *interface,
 260                 const char *property,
 261                 sd_bus_message *reply,
 262                 void *userdata,
 263                 sd_bus_error *error) {
 264
 265         ExecContext *c = userdata;
 266         uint64_t u;
 267
 268         assert(bus);
 269         assert(reply);
 270         assert(c);
 271
 272         if (c->timer_slack_nsec != NSEC_INFINITY)
 273                 u = (uint64_t) c->timer_slack_nsec;
 274         else
 275                 u = (uint64_t) prctl(PR_GET_TIMERSLACK);
 276
 277         return sd_bus_message_append(reply, "t", u);
 278 }
 279
 280 static int property_get_capability_bounding_set(
 281                 sd_bus *bus,
 282                 const char *path,
 283                 const char *interface,
 284                 const char *property,
 285                 sd_bus_message *reply,
 286                 void *userdata,
 287                 sd_bus_error *error) {
 288
 289         ExecContext *c = userdata;
 290
 291         assert(bus);
 292         assert(reply);
 293         assert(c);
 294
 295         return sd_bus_message_append(reply, "t", c->capability_bounding_set);
 296 }
 297
 298 static int property_get_ambient_capabilities(
 299                 sd_bus *bus,
 300                 const char *path,
 301                 const char *interface,
 302                 const char *property,
 303                 sd_bus_message *reply,
 304                 void *userdata,
 305                 sd_bus_error *error) {
 306
 307         ExecContext *c = userdata;
 308
 309         assert(bus);
 310         assert(reply);
 311         assert(c);
 312
 313         return sd_bus_message_append(reply, "t", c->capability_ambient_set);
 314 }
 315
 316 static int property_get_empty_string(
 317                 sd_bus *bus,
 318                 const char *path,
 319                 const char *interface,
 320                 const char *property,
 321                 sd_bus_message *reply,
 322                 void *userdata,
 323                 sd_bus_error *error) {
 324
 325         assert(bus);
 326         assert(reply);
 327
 328         return sd_bus_message_append(reply, "s", "");
 329 }
 330
 331 static int property_get_syscall_filter(
 332                 sd_bus *bus,
 333                 const char *path,
 334                 const char *interface,
 335                 const char *property,
 336                 sd_bus_message *reply,
 337                 void *userdata,
 338                 sd_bus_error *error) {
 339
 340         ExecContext *c = userdata;
 341         _cleanup_strv_free_ char **l = NULL;
 342         int r;
 343
 344 #ifdef HAVE_SECCOMP
 345         Iterator i;
 346         void *id;
 347 #endif
 348
 349         assert(bus);
 350         assert(reply);
 351         assert(c);
 352
 353         r = sd_bus_message_open_container(reply, 'r', "bas");
 354         if (r < 0)
 355                 return r;
 356
 357         r = sd_bus_message_append(reply, "b", c->syscall_whitelist);
 358         if (r < 0)
 359                 return r;
 360
 361 #ifdef HAVE_SECCOMP
 362         SET_FOREACH(id, c->syscall_filter, i) {
 363                 char *name;
 364
 365                 name = seccomp_syscall_resolve_num_arch(SCMP_ARCH_NATIVE, PTR_TO_INT(id) - 1);
 366                 if (!name)
 367                         continue;
 368
 369                 r = strv_consume(&l, name);
 370                 if (r < 0)
 371                         return r;
 372         }
 373 #endif
 374
 375         strv_sort(l);
 376
 377         r = sd_bus_message_append_strv(reply, l);
 378         if (r < 0)
 379                 return r;
 380
 381         return sd_bus_message_close_container(reply);
 382 }
 383
 384 static int property_get_syscall_archs(
 385                 sd_bus *bus,
 386                 const char *path,
 387                 const char *interface,
 388                 const char *property,
 389                 sd_bus_message *reply,
 390                 void *userdata,
 391                 sd_bus_error *error) {
 392
 393         ExecContext *c = userdata;
 394         _cleanup_strv_free_ char **l = NULL;
 395         int r;
 396
 397 #ifdef HAVE_SECCOMP
 398         Iterator i;
 399         void *id;
 400 #endif
 401
 402         assert(bus);
 403         assert(reply);
 404         assert(c);
 405
 406 #ifdef HAVE_SECCOMP
 407         SET_FOREACH(id, c->syscall_archs, i) {
 408                 const char *name;
 409
 410                 name = seccomp_arch_to_string(PTR_TO_UINT32(id) - 1);
 411                 if (!name)
 412                         continue;
 413
 414                 r = strv_extend(&l, name);
 415                 if (r < 0)
 416                         return -ENOMEM;
 417         }
 418 #endif
 419
 420         strv_sort(l);
 421
 422         r = sd_bus_message_append_strv(reply, l);
 423         if (r < 0)
 424                 return r;
 425
 426         return 0;
 427 }
 428
 429 static int property_get_syscall_errno(
 430                 sd_bus *bus,
 431                 const char *path,
 432                 const char *interface,
 433                 const char *property,
 434                 sd_bus_message *reply,
 435                 void *userdata,
 436                 sd_bus_error *error) {
 437
 438         ExecContext *c = userdata;
 439
 440         assert(bus);
 441         assert(reply);
 442         assert(c);
 443
 444         return sd_bus_message_append(reply, "i", (int32_t) c->syscall_errno);
 445 }
 446
 447 static int property_get_selinux_context(
 448                 sd_bus *bus,
 449                 const char *path,
 450                 const char *interface,
 451                 const char *property,
 452                 sd_bus_message *reply,
 453                 void *userdata,
 454                 sd_bus_error *error) {
 455
 456         ExecContext *c = userdata;
 457
 458         assert(bus);
 459         assert(reply);
 460         assert(c);
 461
 462         return sd_bus_message_append(reply, "(bs)", c->selinux_context_ignore, c->selinux_context);
 463 }
 464
 465 static int property_get_apparmor_profile(
 466                 sd_bus *bus,
 467                 const char *path,
 468                 const char *interface,
 469                 const char *property,
 470                 sd_bus_message *reply,
 471                 void *userdata,
 472                 sd_bus_error *error) {
 473
 474         ExecContext *c = userdata;
 475
 476         assert(bus);
 477         assert(reply);
 478         assert(c);
 479
 480         return sd_bus_message_append(reply, "(bs)", c->apparmor_profile_ignore, c->apparmor_profile);
 481 }
 482
 483 static int property_get_smack_process_label(
 484                 sd_bus *bus,
 485                 const char *path,
 486                 const char *interface,
 487                 const char *property,
 488                 sd_bus_message *reply,
 489                 void *userdata,
 490                 sd_bus_error *error) {
 491
 492         ExecContext *c = userdata;
 493
 494         assert(bus);
 495         assert(reply);
 496         assert(c);
 497
 498         return sd_bus_message_append(reply, "(bs)", c->smack_process_label_ignore, c->smack_process_label);
 499 }
 500
 501 static int property_get_personality(
 502                 sd_bus *bus,
 503                 const char *path,
 504                 const char *interface,
 505                 const char *property,
 506                 sd_bus_message *reply,
 507                 void *userdata,
 508                 sd_bus_error *error) {
 509
 510         ExecContext *c = userdata;
 511
 512         assert(bus);
 513         assert(reply);
 514         assert(c);
 515
 516         return sd_bus_message_append(reply, "s", personality_to_string(c->personality));
 517 }
 518
 519 static int property_get_address_families(
 520                 sd_bus *bus,
 521                 const char *path,
 522                 const char *interface,
 523                 const char *property,
 524                 sd_bus_message *reply,
 525                 void *userdata,
 526                 sd_bus_error *error) {
 527
 528         ExecContext *c = userdata;
 529         _cleanup_strv_free_ char **l = NULL;
 530         Iterator i;
 531         void *af;
 532         int r;
 533
 534         assert(bus);
 535         assert(reply);
 536         assert(c);
 537
 538         r = sd_bus_message_open_container(reply, 'r', "bas");
 539         if (r < 0)
 540                 return r;
 541
 542         r = sd_bus_message_append(reply, "b", c->address_families_whitelist);
 543         if (r < 0)
 544                 return r;
 545
 546         SET_FOREACH(af, c->address_families, i) {
 547                 const char *name;
 548
 549                 name = af_to_name(PTR_TO_INT(af));
 550                 if (!name)
 551                         continue;
 552
 553                 r = strv_extend(&l, name);
 554                 if (r < 0)
 555                         return -ENOMEM;
 556         }
 557
 558         strv_sort(l);
 559
 560         r = sd_bus_message_append_strv(reply, l);
 561         if (r < 0)
 562                 return r;
 563
 564         return sd_bus_message_close_container(reply);
 565 }
 566
 567 static int property_get_working_directory(
 568                 sd_bus *bus,
 569                 const char *path,
 570                 const char *interface,
 571                 const char *property,
 572                 sd_bus_message *reply,
 573                 void *userdata,
 574                 sd_bus_error *error) {
 575
 576         ExecContext *c = userdata;
 577         const char *wd;
 578
 579         assert(bus);
 580         assert(reply);
 581         assert(c);
 582
 583         if (c->working_directory_home)
 584                 wd = "~";
 585         else
 586                 wd = c->working_directory;
 587
 588         if (c->working_directory_missing_ok)
 589                 wd = strjoina("!", wd);
 590
 591         return sd_bus_message_append(reply, "s", wd);
 592 }
 593
 594 static int property_get_syslog_level(
 595                 sd_bus *bus,
 596                 const char *path,
 597                 const char *interface,
 598                 const char *property,
 599                 sd_bus_message *reply,
 600                 void *userdata,
 601                 sd_bus_error *error) {
 602
 603         ExecContext *c = userdata;
 604
 605         assert(bus);
 606         assert(reply);
 607         assert(c);
 608
 609         return sd_bus_message_append(reply, "i", LOG_PRI(c->syslog_priority));
 610 }
 611
 612 static int property_get_syslog_facility(
 613                 sd_bus *bus,
 614                 const char *path,
 615                 const char *interface,
 616                 const char *property,
 617                 sd_bus_message *reply,
 618                 void *userdata,
 619                 sd_bus_error *error) {
 620
 621         ExecContext *c = userdata;
 622
 623         assert(bus);
 624         assert(reply);
 625         assert(c);
 626
 627         return sd_bus_message_append(reply, "i", LOG_FAC(c->syslog_priority));
 628 }
 629
 630 static int property_get_input_fdname(
 631                 sd_bus *bus,
 632                 const char *path,
 633                 const char *interface,
 634                 const char *property,
 635                 sd_bus_message *reply,
 636                 void *userdata,
 637                 sd_bus_error *error) {
 638
 639         ExecContext *c = userdata;
 640         const char *name;
 641
 642         assert(bus);
 643         assert(c);
 644         assert(property);
 645         assert(reply);
 646
 647         name = exec_context_fdname(c, STDIN_FILENO);
 648
 649         return sd_bus_message_append(reply, "s", name);
 650 }
 651
 652 static int property_get_output_fdname(
 653                 sd_bus *bus,
 654                 const char *path,
 655                 const char *interface,
 656                 const char *property,
 657                 sd_bus_message *reply,
 658                 void *userdata,
 659                 sd_bus_error *error) {
 660
 661         ExecContext *c = userdata;
 662         const char *name = NULL;
 663
 664         assert(bus);
 665         assert(c);
 666         assert(property);
 667         assert(reply);
 668
 669         if (c->std_output == EXEC_OUTPUT_NAMED_FD && streq(property, "StandardOutputFileDescriptorName"))
 670                 name = exec_context_fdname(c, STDOUT_FILENO);
 671         else if (c->std_error == EXEC_OUTPUT_NAMED_FD && streq(property, "StandardErrorFileDescriptorName"))
 672                 name = exec_context_fdname(c, STDERR_FILENO);
 673
 674         return sd_bus_message_append(reply, "s", name);
 675 }
 676
 677 const sd_bus_vtable bus_exec_vtable[] = {
 678         SD_BUS_VTABLE_START(0),
 679         SD_BUS_PROPERTY("Environment", "as", NULL, offsetof(ExecContext, environment), SD_BUS_VTABLE_PROPERTY_CONST),
 680         SD_BUS_PROPERTY("EnvironmentFiles", "a(sb)", property_get_environment_files, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 681         SD_BUS_PROPERTY("PassEnvironment", "as", NULL, offsetof(ExecContext, pass_environment), SD_BUS_VTABLE_PROPERTY_CONST),
 682         SD_BUS_PROPERTY("UMask", "u", bus_property_get_mode, offsetof(ExecContext, umask), SD_BUS_VTABLE_PROPERTY_CONST),
 683         SD_BUS_PROPERTY("LimitCPU", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
 684         SD_BUS_PROPERTY("LimitCPUSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
 685         SD_BUS_PROPERTY("LimitFSIZE", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
 686         SD_BUS_PROPERTY("LimitFSIZESoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
 687         SD_BUS_PROPERTY("LimitDATA", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
 688         SD_BUS_PROPERTY("LimitDATASoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
 689         SD_BUS_PROPERTY("LimitSTACK", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
 690         SD_BUS_PROPERTY("LimitSTACKSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
 691         SD_BUS_PROPERTY("LimitCORE", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
 692         SD_BUS_PROPERTY("LimitCORESoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
 693         SD_BUS_PROPERTY("LimitRSS", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
 694         SD_BUS_PROPERTY("LimitRSSSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
 695         SD_BUS_PROPERTY("LimitNOFILE", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
 696         SD_BUS_PROPERTY("LimitNOFILESoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
 697         SD_BUS_PROPERTY("LimitAS", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
 698         SD_BUS_PROPERTY("LimitASSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
 699         SD_BUS_PROPERTY("LimitNPROC", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
 700         SD_BUS_PROPERTY("LimitNPROCSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
 701         SD_BUS_PROPERTY("LimitMEMLOCK", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
 702         SD_BUS_PROPERTY("LimitMEMLOCKSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
 703         SD_BUS_PROPERTY("LimitLOCKS", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
 704         SD_BUS_PROPERTY("LimitLOCKSSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
 705         SD_BUS_PROPERTY("LimitSIGPENDING", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
 706         SD_BUS_PROPERTY("LimitSIGPENDINGSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
 707         SD_BUS_PROPERTY("LimitMSGQUEUE", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
 708         SD_BUS_PROPERTY("LimitMSGQUEUESoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
 709         SD_BUS_PROPERTY("LimitNICE", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
 710         SD_BUS_PROPERTY("LimitNICESoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
 711         SD_BUS_PROPERTY("LimitRTPRIO", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
 712         SD_BUS_PROPERTY("LimitRTPRIOSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
 713         SD_BUS_PROPERTY("LimitRTTIME", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
 714         SD_BUS_PROPERTY("LimitRTTIMESoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
 715         SD_BUS_PROPERTY("WorkingDirectory", "s", property_get_working_directory, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 716         SD_BUS_PROPERTY("RootDirectory", "s", NULL, offsetof(ExecContext, root_directory), SD_BUS_VTABLE_PROPERTY_CONST),
 717         SD_BUS_PROPERTY("OOMScoreAdjust", "i", property_get_oom_score_adjust, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 718         SD_BUS_PROPERTY("Nice", "i", property_get_nice, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 719         SD_BUS_PROPERTY("IOScheduling", "i", property_get_ioprio, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 720         SD_BUS_PROPERTY("CPUSchedulingPolicy", "i", property_get_cpu_sched_policy, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 721         SD_BUS_PROPERTY("CPUSchedulingPriority", "i", property_get_cpu_sched_priority, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 722         SD_BUS_PROPERTY("CPUAffinity", "ay", property_get_cpu_affinity, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 723         SD_BUS_PROPERTY("TimerSlackNSec", "t", property_get_timer_slack_nsec, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 724         SD_BUS_PROPERTY("CPUSchedulingResetOnFork", "b", bus_property_get_bool, offsetof(ExecContext, cpu_sched_reset_on_fork), SD_BUS_VTABLE_PROPERTY_CONST),
 725         SD_BUS_PROPERTY("NonBlocking", "b", bus_property_get_bool, offsetof(ExecContext, non_blocking), SD_BUS_VTABLE_PROPERTY_CONST),
 726         SD_BUS_PROPERTY("StandardInput", "s", property_get_exec_input, offsetof(ExecContext, std_input), SD_BUS_VTABLE_PROPERTY_CONST),
 727         SD_BUS_PROPERTY("StandardInputFileDescriptorName", "s", property_get_input_fdname, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 728         SD_BUS_PROPERTY("StandardOutput", "s", bus_property_get_exec_output, offsetof(ExecContext, std_output), SD_BUS_VTABLE_PROPERTY_CONST),
 729         SD_BUS_PROPERTY("StandardOutputFileDescriptorName", "s", property_get_output_fdname, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 730         SD_BUS_PROPERTY("StandardError", "s", bus_property_get_exec_output, offsetof(ExecContext, std_error), SD_BUS_VTABLE_PROPERTY_CONST),
 731         SD_BUS_PROPERTY("StandardErrorFileDescriptorName", "s", property_get_output_fdname, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 732         SD_BUS_PROPERTY("TTYPath", "s", NULL, offsetof(ExecContext, tty_path), SD_BUS_VTABLE_PROPERTY_CONST),
 733         SD_BUS_PROPERTY("TTYReset", "b", bus_property_get_bool, offsetof(ExecContext, tty_reset), SD_BUS_VTABLE_PROPERTY_CONST),
 734         SD_BUS_PROPERTY("TTYVHangup", "b", bus_property_get_bool, offsetof(ExecContext, tty_vhangup), SD_BUS_VTABLE_PROPERTY_CONST),
 735         SD_BUS_PROPERTY("TTYVTDisallocate", "b", bus_property_get_bool, offsetof(ExecContext, tty_vt_disallocate), SD_BUS_VTABLE_PROPERTY_CONST),
 736         SD_BUS_PROPERTY("SyslogPriority", "i", bus_property_get_int, offsetof(ExecContext, syslog_priority), SD_BUS_VTABLE_PROPERTY_CONST),
 737         SD_BUS_PROPERTY("SyslogIdentifier", "s", NULL, offsetof(ExecContext, syslog_identifier), SD_BUS_VTABLE_PROPERTY_CONST),
 738         SD_BUS_PROPERTY("SyslogLevelPrefix", "b", bus_property_get_bool, offsetof(ExecContext, syslog_level_prefix), SD_BUS_VTABLE_PROPERTY_CONST),
 739         SD_BUS_PROPERTY("SyslogLevel", "i", property_get_syslog_level, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 740         SD_BUS_PROPERTY("SyslogFacility", "i", property_get_syslog_facility, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 741         SD_BUS_PROPERTY("Capabilities", "s", property_get_empty_string, 0, SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
 742         SD_BUS_PROPERTY("SecureBits", "i", bus_property_get_int, offsetof(ExecContext, secure_bits), SD_BUS_VTABLE_PROPERTY_CONST),
 743         SD_BUS_PROPERTY("CapabilityBoundingSet", "t", property_get_capability_bounding_set, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 744         SD_BUS_PROPERTY("AmbientCapabilities", "t", property_get_ambient_capabilities, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 745         SD_BUS_PROPERTY("User", "s", NULL, offsetof(ExecContext, user), SD_BUS_VTABLE_PROPERTY_CONST),
 746         SD_BUS_PROPERTY("Group", "s", NULL, offsetof(ExecContext, group), SD_BUS_VTABLE_PROPERTY_CONST),
 747         SD_BUS_PROPERTY("DynamicUser", "b", bus_property_get_bool, offsetof(ExecContext, dynamic_user), SD_BUS_VTABLE_PROPERTY_CONST),
 748         SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(ExecContext, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST),
 749         SD_BUS_PROPERTY("SupplementaryGroups", "as", NULL, offsetof(ExecContext, supplementary_groups), SD_BUS_VTABLE_PROPERTY_CONST),
 750         SD_BUS_PROPERTY("PAMName", "s", NULL, offsetof(ExecContext, pam_name), SD_BUS_VTABLE_PROPERTY_CONST),
 751         SD_BUS_PROPERTY("ReadWriteDirectories", "as", NULL, offsetof(ExecContext, read_write_paths), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
 752         SD_BUS_PROPERTY("ReadOnlyDirectories", "as", NULL, offsetof(ExecContext, read_only_paths), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
 753         SD_BUS_PROPERTY("InaccessibleDirectories", "as", NULL, offsetof(ExecContext, inaccessible_paths), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
 754         SD_BUS_PROPERTY("ReadWritePaths", "as", NULL, offsetof(ExecContext, read_write_paths), SD_BUS_VTABLE_PROPERTY_CONST),
 755         SD_BUS_PROPERTY("ReadOnlyPaths", "as", NULL, offsetof(ExecContext, read_only_paths), SD_BUS_VTABLE_PROPERTY_CONST),
 756         SD_BUS_PROPERTY("InaccessiblePaths", "as", NULL, offsetof(ExecContext, inaccessible_paths), SD_BUS_VTABLE_PROPERTY_CONST),
 757         SD_BUS_PROPERTY("MountFlags", "t", bus_property_get_ulong, offsetof(ExecContext, mount_flags), SD_BUS_VTABLE_PROPERTY_CONST),
 758         SD_BUS_PROPERTY("PrivateTmp", "b", bus_property_get_bool, offsetof(ExecContext, private_tmp), SD_BUS_VTABLE_PROPERTY_CONST),
 759         SD_BUS_PROPERTY("PrivateDevices", "b", bus_property_get_bool, offsetof(ExecContext, private_devices), SD_BUS_VTABLE_PROPERTY_CONST),
 760         SD_BUS_PROPERTY("ProtectKernelTunables", "b", bus_property_get_bool, offsetof(ExecContext, protect_kernel_tunables), SD_BUS_VTABLE_PROPERTY_CONST),
 761         SD_BUS_PROPERTY("ProtectKernelModules", "b", bus_property_get_bool, offsetof(ExecContext, protect_kernel_modules), SD_BUS_VTABLE_PROPERTY_CONST),
 762         SD_BUS_PROPERTY("ProtectControlGroups", "b", bus_property_get_bool, offsetof(ExecContext, protect_control_groups), SD_BUS_VTABLE_PROPERTY_CONST),
 763         SD_BUS_PROPERTY("PrivateNetwork", "b", bus_property_get_bool, offsetof(ExecContext, private_network), SD_BUS_VTABLE_PROPERTY_CONST),
 764         SD_BUS_PROPERTY("PrivateUsers", "b", bus_property_get_bool, offsetof(ExecContext, private_users), SD_BUS_VTABLE_PROPERTY_CONST),
 765         SD_BUS_PROPERTY("ProtectHome", "s", bus_property_get_protect_home, offsetof(ExecContext, protect_home), SD_BUS_VTABLE_PROPERTY_CONST),
 766         SD_BUS_PROPERTY("ProtectSystem", "s", bus_property_get_protect_system, offsetof(ExecContext, protect_system), SD_BUS_VTABLE_PROPERTY_CONST),
 767         SD_BUS_PROPERTY("SameProcessGroup", "b", bus_property_get_bool, offsetof(ExecContext, same_pgrp), SD_BUS_VTABLE_PROPERTY_CONST),
 768         SD_BUS_PROPERTY("UtmpIdentifier", "s", NULL, offsetof(ExecContext, utmp_id), SD_BUS_VTABLE_PROPERTY_CONST),
 769         SD_BUS_PROPERTY("UtmpMode", "s", property_get_exec_utmp_mode, offsetof(ExecContext, utmp_mode), SD_BUS_VTABLE_PROPERTY_CONST),
 770         SD_BUS_PROPERTY("SELinuxContext", "(bs)", property_get_selinux_context, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 771         SD_BUS_PROPERTY("AppArmorProfile", "(bs)", property_get_apparmor_profile, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 772         SD_BUS_PROPERTY("SmackProcessLabel", "(bs)", property_get_smack_process_label, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 773         SD_BUS_PROPERTY("IgnoreSIGPIPE", "b", bus_property_get_bool, offsetof(ExecContext, ignore_sigpipe), SD_BUS_VTABLE_PROPERTY_CONST),
 774         SD_BUS_PROPERTY("NoNewPrivileges", "b", bus_property_get_bool, offsetof(ExecContext, no_new_privileges), SD_BUS_VTABLE_PROPERTY_CONST),
 775         SD_BUS_PROPERTY("SystemCallFilter", "(bas)", property_get_syscall_filter, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 776         SD_BUS_PROPERTY("SystemCallArchitectures", "as", property_get_syscall_archs, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 777         SD_BUS_PROPERTY("SystemCallErrorNumber", "i", property_get_syscall_errno, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 778         SD_BUS_PROPERTY("Personality", "s", property_get_personality, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 779         SD_BUS_PROPERTY("RestrictAddressFamilies", "(bas)", property_get_address_families, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 780         SD_BUS_PROPERTY("RuntimeDirectoryMode", "u", bus_property_get_mode, offsetof(ExecContext, runtime_directory_mode), SD_BUS_VTABLE_PROPERTY_CONST),
 781         SD_BUS_PROPERTY("RuntimeDirectory", "as", NULL, offsetof(ExecContext, runtime_directory), SD_BUS_VTABLE_PROPERTY_CONST),
 782         SD_BUS_PROPERTY("MemoryDenyWriteExecute", "b", bus_property_get_bool, offsetof(ExecContext, memory_deny_write_execute), SD_BUS_VTABLE_PROPERTY_CONST),
 783         SD_BUS_PROPERTY("RestrictRealtime", "b", bus_property_get_bool, offsetof(ExecContext, restrict_realtime), SD_BUS_VTABLE_PROPERTY_CONST),
 784         SD_BUS_VTABLE_END
 785 };
 786
 787 static int append_exec_command(sd_bus_message *reply, ExecCommand *c) {
 788         int r;
 789
 790         assert(reply);
 791         assert(c);
 792
 793         if (!c->path)
 794                 return 0;
 795
 796         r = sd_bus_message_open_container(reply, 'r', "sasbttttuii");
 797         if (r < 0)
 798                 return r;
 799
 800         r = sd_bus_message_append(reply, "s", c->path);
 801         if (r < 0)
 802                 return r;
 803
 804         r = sd_bus_message_append_strv(reply, c->argv);
 805         if (r < 0)
 806                 return r;
 807
 808         r = sd_bus_message_append(reply, "bttttuii",
 809                                   c->ignore,
 810                                   c->exec_status.start_timestamp.realtime,
 811                                   c->exec_status.start_timestamp.monotonic,
 812                                   c->exec_status.exit_timestamp.realtime,
 813                                   c->exec_status.exit_timestamp.monotonic,
 814                                   (uint32_t) c->exec_status.pid,
 815                                   (int32_t) c->exec_status.code,
 816                                   (int32_t) c->exec_status.status);
 817         if (r < 0)
 818                 return r;
 819
 820         return sd_bus_message_close_container(reply);
 821 }
 822
 823 int bus_property_get_exec_command(
 824                 sd_bus *bus,
 825                 const char *path,
 826                 const char *interface,
 827                 const char *property,
 828                 sd_bus_message *reply,
 829                 void *userdata,
 830                 sd_bus_error *ret_error) {
 831
 832         ExecCommand *c = (ExecCommand*) userdata;
 833         int r;
 834
 835         assert(bus);
 836         assert(reply);
 837
 838         r = sd_bus_message_open_container(reply, 'a', "(sasbttttuii)");
 839         if (r < 0)
 840                 return r;
 841
 842         r = append_exec_command(reply, c);
 843         if (r < 0)
 844                 return r;
 845
 846         return sd_bus_message_close_container(reply);
 847 }
 848
 849 int bus_property_get_exec_command_list(
 850                 sd_bus *bus,
 851                 const char *path,
 852                 const char *interface,
 853                 const char *property,
 854                 sd_bus_message *reply,
 855                 void *userdata,
 856                 sd_bus_error *ret_error) {
 857
 858         ExecCommand *c = *(ExecCommand**) userdata;
 859         int r;
 860
 861         assert(bus);
 862         assert(reply);
 863
 864         r = sd_bus_message_open_container(reply, 'a', "(sasbttttuii)");
 865         if (r < 0)
 866                 return r;
 867
 868         LIST_FOREACH(command, c, c) {
 869                 r = append_exec_command(reply, c);
 870                 if (r < 0)
 871                         return r;
 872         }
 873
 874         return sd_bus_message_close_container(reply);
 875 }
 876
 877 int bus_exec_context_set_transient_property(
 878                 Unit *u,
 879                 ExecContext *c,
 880                 const char *name,
 881                 sd_bus_message *message,
 882                 UnitSetPropertiesMode mode,
 883                 sd_bus_error *error) {
 884
 885         const char *soft = NULL;
 886         int r, ri;
 887
 888         assert(u);
 889         assert(c);
 890         assert(name);
 891         assert(message);
 892
 893         if (streq(name, "User")) {
 894                 const char *uu;
 895
 896                 r = sd_bus_message_read(message, "s", &uu);
 897                 if (r < 0)
 898                         return r;
 899
 900                 if (!isempty(uu) && !valid_user_group_name_or_id(uu))
 901                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid user name: %s", uu);
 902
 903                 if (mode != UNIT_CHECK) {
 904
 905                         if (isempty(uu))
 906                                 c->user = mfree(c->user);
 907                         else if (free_and_strdup(&c->user, uu) < 0)
 908                                 return -ENOMEM;
 909
 910                         unit_write_drop_in_private_format(u, mode, name, "User=%s", uu);
 911                 }
 912
 913                 return 1;
 914
 915         } else if (streq(name, "Group")) {
 916                 const char *gg;
 917
 918                 r = sd_bus_message_read(message, "s", &gg);
 919                 if (r < 0)
 920                         return r;
 921
 922                 if (!isempty(gg) && !valid_user_group_name_or_id(gg))
 923                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid group name: %s", gg);
 924
 925                 if (mode != UNIT_CHECK) {
 926
 927                         if (isempty(gg))
 928                                 c->group = mfree(c->group);
 929                         else if (free_and_strdup(&c->group, gg) < 0)
 930                                 return -ENOMEM;
 931
 932                         unit_write_drop_in_private_format(u, mode, name, "Group=%s", gg);
 933                 }
 934
 935                 return 1;
 936         } else if (streq(name, "SyslogIdentifier")) {
 937                 const char *id;
 938
 939                 r = sd_bus_message_read(message, "s", &id);
 940                 if (r < 0)
 941                         return r;
 942
 943                 if (mode != UNIT_CHECK) {
 944
 945                         if (isempty(id))
 946                                 c->syslog_identifier = mfree(c->syslog_identifier);
 947                         else if (free_and_strdup(&c->syslog_identifier, id) < 0)
 948                                 return -ENOMEM;
 949
 950                         unit_write_drop_in_private_format(u, mode, name, "SyslogIdentifier=%s", id);
 951                 }
 952
 953                 return 1;
 954         } else if (streq(name, "SyslogLevel")) {
 955                 int level;
 956
 957                 r = sd_bus_message_read(message, "i", &level);
 958                 if (r < 0)
 959                         return r;
 960
 961                 if (!log_level_is_valid(level))
 962                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Log level value out of range");
 963
 964                 if (mode != UNIT_CHECK) {
 965                         c->syslog_priority = (c->syslog_priority & LOG_FACMASK) | level;
 966                         unit_write_drop_in_private_format(u, mode, name, "SyslogLevel=%i", level);
 967                 }
 968
 969                 return 1;
 970         } else if (streq(name, "SyslogFacility")) {
 971                 int facility;
 972
 973                 r = sd_bus_message_read(message, "i", &facility);
 974                 if (r < 0)
 975                         return r;
 976
 977                 if (!log_facility_unshifted_is_valid(facility))
 978                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Log facility value out of range");
 979
 980                 if (mode != UNIT_CHECK) {
 981                         c->syslog_priority = (facility << 3) | LOG_PRI(c->syslog_priority);
 982                         unit_write_drop_in_private_format(u, mode, name, "SyslogFacility=%i", facility);
 983                 }
 984
 985                 return 1;
 986         } else if (streq(name, "Nice")) {
 987                 int n;
 988
 989                 r = sd_bus_message_read(message, "i", &n);
 990                 if (r < 0)
 991                         return r;
 992
 993                 if (!nice_is_valid(n))
 994                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Nice value out of range");
 995
 996                 if (mode != UNIT_CHECK) {
 997                         c->nice = n;
 998                         unit_write_drop_in_private_format(u, mode, name, "Nice=%i", n);
 999                 }
1000
1001                 return 1;
1002
1003         } else if (STR_IN_SET(name, "TTYPath", "RootDirectory")) {
1004                 const char *s;
1005
1006                 r = sd_bus_message_read(message, "s", &s);
1007                 if (r < 0)
1008                         return r;
1009
1010                 if (!path_is_absolute(s))
1011                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "%s takes an absolute path", name);
1012
1013                 if (mode != UNIT_CHECK) {
1014                         if (streq(name, "TTYPath"))
1015                                 r = free_and_strdup(&c->tty_path, s);
1016                         else {
1017                                 assert(streq(name, "RootDirectory"));
1018                                 r = free_and_strdup(&c->root_directory, s);
1019                         }
1020                         if (r < 0)
1021                                 return r;
1022
1023                         unit_write_drop_in_private_format(u, mode, name, "%s=%s", name, s);
1024                 }
1025
1026                 return 1;
1027
1028         } else if (streq(name, "WorkingDirectory")) {
1029                 const char *s;
1030                 bool missing_ok;
1031
1032                 r = sd_bus_message_read(message, "s", &s);
1033                 if (r < 0)
1034                         return r;
1035
1036                 if (s[0] == '-') {
1037                         missing_ok = true;
1038                         s++;
1039                 } else
1040                         missing_ok = false;
1041
1042                 if (!streq(s, "~") && !path_is_absolute(s))
1043                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "WorkingDirectory= expects an absolute path or '~'");
1044
1045                 if (mode != UNIT_CHECK) {
1046                         if (streq(s, "~")) {
1047                                 c->working_directory = mfree(c->working_directory);
1048                                 c->working_directory_home = true;
1049                         } else {
1050                                 r = free_and_strdup(&c->working_directory, s);
1051                                 if (r < 0)
1052                                         return r;
1053
1054                                 c->working_directory_home = false;
1055                         }
1056
1057                         c->working_directory_missing_ok = missing_ok;
1058                         unit_write_drop_in_private_format(u, mode, name, "WorkingDirectory=%s%s", missing_ok ? "-" : "", s);
1059                 }
1060
1061                 return 1;
1062
1063         } else if (streq(name, "StandardInput")) {
1064                 const char *s;
1065                 ExecInput p;
1066
1067                 r = sd_bus_message_read(message, "s", &s);
1068                 if (r < 0)
1069                         return r;
1070
1071                 p = exec_input_from_string(s);
1072                 if (p < 0)
1073                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid standard input name");
1074
1075                 if (mode != UNIT_CHECK) {
1076                         c->std_input = p;
1077
1078                         unit_write_drop_in_private_format(u, mode, name, "StandardInput=%s", exec_input_to_string(p));
1079                 }
1080
1081                 return 1;
1082
1083         } else if (streq(name, "StandardOutput")) {
1084                 const char *s;
1085                 ExecOutput p;
1086
1087                 r = sd_bus_message_read(message, "s", &s);
1088                 if (r < 0)
1089                         return r;
1090
1091                 p = exec_output_from_string(s);
1092                 if (p < 0)
1093                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid standard output name");
1094
1095                 if (mode != UNIT_CHECK) {
1096                         c->std_output = p;
1097
1098                         unit_write_drop_in_private_format(u, mode, name, "StandardOutput=%s", exec_output_to_string(p));
1099                 }
1100
1101                 return 1;
1102
1103         } else if (streq(name, "StandardError")) {
1104                 const char *s;
1105                 ExecOutput p;
1106
1107                 r = sd_bus_message_read(message, "s", &s);
1108                 if (r < 0)
1109                         return r;
1110
1111                 p = exec_output_from_string(s);
1112                 if (p < 0)
1113                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid standard error name");
1114
1115                 if (mode != UNIT_CHECK) {
1116                         c->std_error = p;
1117
1118                         unit_write_drop_in_private_format(u, mode, name, "StandardError=%s", exec_output_to_string(p));
1119                 }
1120
1121                 return 1;
1122
1123         } else if (STR_IN_SET(name,
1124                               "StandardInputFileDescriptorName", "StandardOutputFileDescriptorName", "StandardErrorFileDescriptorName")) {
1125                 const char *s;
1126
1127                 r = sd_bus_message_read(message, "s", &s);
1128                 if (r < 0)
1129                         return r;
1130
1131                 if (!fdname_is_valid(s))
1132                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid file descriptor name");
1133
1134                 if (mode != UNIT_CHECK) {
1135                         if (streq(name, "StandardInputFileDescriptorName")) {
1136                                 c->std_input = EXEC_INPUT_NAMED_FD;
1137                                 r = free_and_strdup(&c->stdio_fdname[STDIN_FILENO], s);
1138                                 if (r < 0)
1139                                         return r;
1140                                 unit_write_drop_in_private_format(u, mode, name, "StandardInput=fd:%s", s);
1141                         } else if (streq(name, "StandardOutputFileDescriptorName")) {
1142                                 c->std_output = EXEC_OUTPUT_NAMED_FD;
1143                                 r = free_and_strdup(&c->stdio_fdname[STDOUT_FILENO], s);
1144                                 if (r < 0)
1145                                         return r;
1146                                 unit_write_drop_in_private_format(u, mode, name, "StandardOutput=fd:%s", s);
1147                         } else if (streq(name, "StandardErrorFileDescriptorName")) {
1148                                 c->std_error = EXEC_OUTPUT_NAMED_FD;
1149                                 r = free_and_strdup(&c->stdio_fdname[STDERR_FILENO], s);
1150                                 if (r < 0)
1151                                         return r;
1152                                 unit_write_drop_in_private_format(u, mode, name, "StandardError=fd:%s", s);
1153                         }
1154                 }
1155
1156                 return 1;
1157
1158         } else if (STR_IN_SET(name,
1159                               "IgnoreSIGPIPE", "TTYVHangup", "TTYReset",
1160                               "PrivateTmp", "PrivateDevices", "PrivateNetwork", "PrivateUsers",
1161                               "NoNewPrivileges", "SyslogLevelPrefix", "MemoryDenyWriteExecute",
1162                               "RestrictRealtime", "DynamicUser", "RemoveIPC", "ProtectKernelTunables",
1163                               "ProtectKernelModules", "ProtectControlGroups")) {
1164                 int b;
1165
1166                 r = sd_bus_message_read(message, "b", &b);
1167                 if (r < 0)
1168                         return r;
1169
1170                 if (mode != UNIT_CHECK) {
1171                         if (streq(name, "IgnoreSIGPIPE"))
1172                                 c->ignore_sigpipe = b;
1173                         else if (streq(name, "TTYVHangup"))
1174                                 c->tty_vhangup = b;
1175                         else if (streq(name, "TTYReset"))
1176                                 c->tty_reset = b;
1177                         else if (streq(name, "PrivateTmp"))
1178                                 c->private_tmp = b;
1179                         else if (streq(name, "PrivateDevices"))
1180                                 c->private_devices = b;
1181                         else if (streq(name, "PrivateNetwork"))
1182                                 c->private_network = b;
1183                         else if (streq(name, "PrivateUsers"))
1184                                 c->private_users = b;
1185                         else if (streq(name, "NoNewPrivileges"))
1186                                 c->no_new_privileges = b;
1187                         else if (streq(name, "SyslogLevelPrefix"))
1188                                 c->syslog_level_prefix = b;
1189                         else if (streq(name, "MemoryDenyWriteExecute"))
1190                                 c->memory_deny_write_execute = b;
1191                         else if (streq(name, "RestrictRealtime"))
1192                                 c->restrict_realtime = b;
1193                         else if (streq(name, "DynamicUser"))
1194                                 c->dynamic_user = b;
1195                         else if (streq(name, "RemoveIPC"))
1196                                 c->remove_ipc = b;
1197                         else if (streq(name, "ProtectKernelTunables"))
1198                                 c->protect_kernel_tunables = b;
1199                         else if (streq(name, "ProtectKernelModules"))
1200                                 c->protect_kernel_modules = b;
1201                         else if (streq(name, "ProtectControlGroups"))
1202                                 c->protect_control_groups = b;
1203
1204                         unit_write_drop_in_private_format(u, mode, name, "%s=%s", name, yes_no(b));
1205                 }
1206
1207                 return 1;
1208
1209         } else if (streq(name, "UtmpIdentifier")) {
1210                 const char *id;
1211
1212                 r = sd_bus_message_read(message, "s", &id);
1213                 if (r < 0)
1214                         return r;
1215
1216                 if (mode != UNIT_CHECK) {
1217                         if (isempty(id))
1218                                 c->utmp_id = mfree(c->utmp_id);
1219                         else if (free_and_strdup(&c->utmp_id, id) < 0)
1220                                 return -ENOMEM;
1221
1222                         unit_write_drop_in_private_format(u, mode, name, "UtmpIdentifier=%s", strempty(id));
1223                 }
1224
1225                 return 1;
1226
1227         } else if (streq(name, "UtmpMode")) {
1228                 const char *s;
1229                 ExecUtmpMode m;
1230
1231                 r = sd_bus_message_read(message, "s", &s);
1232                 if (r < 0)
1233                         return r;
1234
1235                 m = exec_utmp_mode_from_string(s);
1236                 if (m < 0)
1237                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid utmp mode");
1238
1239                 if (mode != UNIT_CHECK) {
1240                         c->utmp_mode = m;
1241
1242                         unit_write_drop_in_private_format(u, mode, name, "UtmpMode=%s", exec_utmp_mode_to_string(m));
1243                 }
1244
1245                 return 1;
1246
1247         } else if (streq(name, "PAMName")) {
1248                 const char *n;
1249
1250                 r = sd_bus_message_read(message, "s", &n);
1251                 if (r < 0)
1252                         return r;
1253
1254                 if (mode != UNIT_CHECK) {
1255                         if (isempty(n))
1256                                 c->pam_name = mfree(c->pam_name);
1257                         else if (free_and_strdup(&c->pam_name, n) < 0)
1258                                 return -ENOMEM;
1259
1260                         unit_write_drop_in_private_format(u, mode, name, "PAMName=%s", strempty(n));
1261                 }
1262
1263                 return 1;
1264
1265         } else if (streq(name, "Environment")) {
1266
1267                 _cleanup_strv_free_ char **l = NULL;
1268
1269                 r = sd_bus_message_read_strv(message, &l);
1270                 if (r < 0)
1271                         return r;
1272
1273                 if (!strv_env_is_valid(l))
1274                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment block.");
1275
1276                 if (mode != UNIT_CHECK) {
1277                         _cleanup_free_ char *joined = NULL;
1278                         char **e;
1279
1280                         if (strv_length(l) == 0) {
1281                                 c->environment = strv_free(c->environment);
1282                                 unit_write_drop_in_private_format(u, mode, name, "Environment=");
1283                         } else {
1284                                 e = strv_env_merge(2, c->environment, l);
1285                                 if (!e)
1286                                         return -ENOMEM;
1287
1288                                 strv_free(c->environment);
1289                                 c->environment = e;
1290
1291                                 joined = strv_join_quoted(c->environment);
1292                                 if (!joined)
1293                                         return -ENOMEM;
1294
1295                                 unit_write_drop_in_private_format(u, mode, name, "Environment=%s", joined);
1296                         }
1297                 }
1298
1299                 return 1;
1300
1301         } else if (streq(name, "TimerSlackNSec")) {
1302
1303                 nsec_t n;
1304
1305                 r = sd_bus_message_read(message, "t", &n);
1306                 if (r < 0)
1307                         return r;
1308
1309                 if (mode != UNIT_CHECK) {
1310                         c->timer_slack_nsec = n;
1311                         unit_write_drop_in_private_format(u, mode, name, "TimerSlackNSec=" NSEC_FMT, n);
1312                 }
1313
1314                 return 1;
1315
1316         } else if (streq(name, "OOMScoreAdjust")) {
1317                 int oa;
1318
1319                 r = sd_bus_message_read(message, "i", &oa);
1320                 if (r < 0)
1321                         return r;
1322
1323                 if (!oom_score_adjust_is_valid(oa))
1324                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "OOM score adjust value out of range");
1325
1326                 if (mode != UNIT_CHECK) {
1327                         c->oom_score_adjust = oa;
1328                         c->oom_score_adjust_set = true;
1329                         unit_write_drop_in_private_format(u, mode, name, "OOMScoreAdjust=%i", oa);
1330                 }
1331
1332                 return 1;
1333
1334         } else if (streq(name, "EnvironmentFiles")) {
1335
1336                 _cleanup_free_ char *joined = NULL;
1337                 _cleanup_fclose_ FILE *f = NULL;
1338                 _cleanup_free_ char **l = NULL;
1339                 size_t size = 0;
1340                 char **i;
1341
1342                 r = sd_bus_message_enter_container(message, 'a', "(sb)");
1343                 if (r < 0)
1344                         return r;
1345
1346                 f = open_memstream(&joined, &size);
1347                 if (!f)
1348                         return -ENOMEM;
1349
1350                 STRV_FOREACH(i, c->environment_files)
1351                         fprintf(f, "EnvironmentFile=%s", *i);
1352
1353                 while ((r = sd_bus_message_enter_container(message, 'r', "sb")) > 0) {
1354                         const char *path;
1355                         int b;
1356
1357                         r = sd_bus_message_read(message, "sb", &path, &b);
1358                         if (r < 0)
1359                                 return r;
1360
1361                         r = sd_bus_message_exit_container(message);
1362                         if (r < 0)
1363                                 return r;
1364
1365                         if (!isempty(path) && !path_is_absolute(path))
1366                                 return sd_bus_error_set_errnof(error, EINVAL, "Path %s is not absolute.", path);
1367
1368                         if (mode != UNIT_CHECK) {
1369                                 char *buf = NULL;
1370
1371                                 buf = strjoin(b ? "-" : "", path, NULL);
1372                                 if (!buf)
1373                                         return -ENOMEM;
1374
1375                                 fprintf(f, "EnvironmentFile=%s", buf);
1376
1377                                 r = strv_consume(&l, buf);
1378                                 if (r < 0)
1379                                         return r;
1380                         }
1381                 }
1382                 if (r < 0)
1383                         return r;
1384
1385                 r = sd_bus_message_exit_container(message);
1386                 if (r < 0)
1387                         return r;
1388
1389                 r = fflush_and_check(f);
1390                 if (r < 0)
1391                         return r;
1392
1393                 if (mode != UNIT_CHECK) {
1394                         if (strv_isempty(l)) {
1395                                 c->environment_files = strv_free(c->environment_files);
1396                                 unit_write_drop_in_private(u, mode, name, "EnvironmentFile=");
1397                         } else {
1398                                 r = strv_extend_strv(&c->environment_files, l, true);
1399                                 if (r < 0)
1400                                         return r;
1401
1402                                 unit_write_drop_in_private(u, mode, name, joined);
1403                         }
1404                 }
1405
1406                 return 1;
1407
1408         } else if (streq(name, "PassEnvironment")) {
1409
1410                 _cleanup_strv_free_ char **l = NULL;
1411
1412                 r = sd_bus_message_read_strv(message, &l);
1413                 if (r < 0)
1414                         return r;
1415
1416                 if (!strv_env_name_is_valid(l))
1417                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid PassEnvironment block.");
1418
1419                 if (mode != UNIT_CHECK) {
1420                         if (strv_isempty(l)) {
1421                                 c->pass_environment = strv_free(c->pass_environment);
1422                                 unit_write_drop_in_private_format(u, mode, name, "PassEnvironment=");
1423                         } else {
1424                                 _cleanup_free_ char *joined = NULL;
1425
1426                                 r = strv_extend_strv(&c->pass_environment, l, true);
1427                                 if (r < 0)
1428                                         return r;
1429
1430                                 joined = strv_join_quoted(c->pass_environment);
1431                                 if (!joined)
1432                                         return -ENOMEM;
1433
1434                                 unit_write_drop_in_private_format(u, mode, name, "PassEnvironment=%s", joined);
1435                         }
1436                 }
1437
1438                 return 1;
1439
1440         } else if (STR_IN_SET(name, "ReadWriteDirectories", "ReadOnlyDirectories", "InaccessibleDirectories",
1441                               "ReadWritePaths", "ReadOnlyPaths", "InaccessiblePaths")) {
1442                 _cleanup_strv_free_ char **l = NULL;
1443                 char ***dirs;
1444                 char **p;
1445
1446                 r = sd_bus_message_read_strv(message, &l);
1447                 if (r < 0)
1448                         return r;
1449
1450                 STRV_FOREACH(p, l) {
1451                         int offset;
1452                         if (!utf8_is_valid(*p))
1453                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid %s", name);
1454
1455                         offset = **p == '-';
1456                         if (!path_is_absolute(*p + offset))
1457                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid %s", name);
1458                 }
1459
1460                 if (mode != UNIT_CHECK) {
1461                         _cleanup_free_ char *joined = NULL;
1462
1463                         if (STR_IN_SET(name, "ReadWriteDirectories", "ReadWritePaths"))
1464                                 dirs = &c->read_write_paths;
1465                         else if (STR_IN_SET(name, "ReadOnlyDirectories", "ReadOnlyPaths"))
1466                                 dirs = &c->read_only_paths;
1467                         else /* "InaccessiblePaths" */
1468                                 dirs = &c->inaccessible_paths;
1469
1470                         if (strv_length(l) == 0) {
1471                                 *dirs = strv_free(*dirs);
1472                                 unit_write_drop_in_private_format(u, mode, name, "%s=", name);
1473                         } else {
1474                                 r = strv_extend_strv(dirs, l, true);
1475
1476                                 if (r < 0)
1477                                         return -ENOMEM;
1478
1479                                 joined = strv_join_quoted(*dirs);
1480                                 if (!joined)
1481                                         return -ENOMEM;
1482
1483                                 unit_write_drop_in_private_format(u, mode, name, "%s=%s", name, joined);
1484                         }
1485
1486                 }
1487
1488                 return 1;
1489
1490         } else if (streq(name, "ProtectSystem")) {
1491                 const char *s;
1492                 ProtectSystem ps;
1493
1494                 r = sd_bus_message_read(message, "s", &s);
1495                 if (r < 0)
1496                         return r;
1497
1498                 r = parse_boolean(s);
1499                 if (r > 0)
1500                         ps = PROTECT_SYSTEM_YES;
1501                 else if (r == 0)
1502                         ps = PROTECT_SYSTEM_NO;
1503                 else {
1504                         ps = protect_system_from_string(s);
1505                         if (ps < 0)
1506                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Failed to parse protect system value");
1507                 }
1508
1509                 if (mode != UNIT_CHECK) {
1510                         c->protect_system = ps;
1511                         unit_write_drop_in_private_format(u, mode, name, "%s=%s", name, s);
1512                 }
1513
1514                 return 1;
1515
1516         } else if (streq(name, "ProtectHome")) {
1517                 const char *s;
1518                 ProtectHome ph;
1519
1520                 r = sd_bus_message_read(message, "s", &s);
1521                 if (r < 0)
1522                         return r;
1523
1524                 r = parse_boolean(s);
1525                 if (r > 0)
1526                         ph = PROTECT_HOME_YES;
1527                 else if (r == 0)
1528                         ph = PROTECT_HOME_NO;
1529                 else {
1530                         ph = protect_home_from_string(s);
1531                         if (ph < 0)
1532                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Failed to parse protect home value");
1533                 }
1534
1535                 if (mode != UNIT_CHECK) {
1536                         c->protect_home = ph;
1537                         unit_write_drop_in_private_format(u, mode, name, "%s=%s", name, s);
1538                 }
1539
1540                 return 1;
1541
1542         } else if (streq(name, "RuntimeDirectory")) {
1543                 _cleanup_strv_free_ char **l = NULL;
1544                 char **p;
1545
1546                 r = sd_bus_message_read_strv(message, &l);
1547                 if (r < 0)
1548                         return r;
1549
1550                 STRV_FOREACH(p, l) {
1551                         if (!filename_is_valid(*p))
1552                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Runtime directory is not valid %s", *p);
1553                 }
1554
1555                 if (mode != UNIT_CHECK) {
1556                         _cleanup_free_ char *joined = NULL;
1557
1558                         if (strv_isempty(l)) {
1559                                 c->runtime_directory = strv_free(c->runtime_directory);
1560                                 unit_write_drop_in_private_format(u, mode, name, "%s=", name);
1561                         } else {
1562                                 r = strv_extend_strv(&c->runtime_directory, l, true);
1563
1564                                 if (r < 0)
1565                                         return -ENOMEM;
1566
1567                                 joined = strv_join_quoted(c->runtime_directory);
1568                                 if (!joined)
1569                                         return -ENOMEM;
1570
1571                                 unit_write_drop_in_private_format(u, mode, name, "%s=%s", name, joined);
1572                         }
1573                 }
1574
1575                 return 1;
1576
1577         } else if (streq(name, "SELinuxContext")) {
1578                 const char *s;
1579
1580                 r = sd_bus_message_read(message, "s", &s);
1581                 if (r < 0)
1582                         return r;
1583
1584                 if (mode != UNIT_CHECK) {
1585                         if (isempty(s))
1586                                 c->selinux_context = mfree(c->selinux_context);
1587                         else if (free_and_strdup(&c->selinux_context, s) < 0)
1588                                 return -ENOMEM;
1589
1590                         unit_write_drop_in_private_format(u, mode, name, "%s=%s", name, strempty(s));
1591                 }
1592
1593                 return 1;
1594
1595         }
1596
1597         ri = rlimit_from_string(name);
1598         if (ri < 0) {
1599                 soft = endswith(name, "Soft");
1600                 if (soft) {
1601                         const char *n;
1602
1603                         n = strndupa(name, soft - name);
1604                         ri = rlimit_from_string(n);
1605                         if (ri >= 0)
1606                                 name = n;
1607
1608                 }
1609         }
1610
1611         if (ri >= 0) {
1612                 uint64_t rl;
1613                 rlim_t x;
1614
1615                 r = sd_bus_message_read(message, "t", &rl);
1616                 if (r < 0)
1617                         return r;
1618
1619                 if (rl == (uint64_t) -1)
1620                         x = RLIM_INFINITY;
1621                 else {
1622                         x = (rlim_t) rl;
1623
1624                         if ((uint64_t) x != rl)
1625                                 return -ERANGE;
1626                 }
1627
1628                 if (mode != UNIT_CHECK) {
1629                         _cleanup_free_ char *f = NULL;
1630                         struct rlimit nl;
1631
1632                         if (c->rlimit[ri]) {
1633                                 nl = *c->rlimit[ri];
1634
1635                                 if (soft)
1636                                         nl.rlim_cur = x;
1637                                 else
1638                                         nl.rlim_max = x;
1639                         } else
1640                                 /* When the resource limit is not initialized yet, then assign the value to both fields */
1641                                 nl = (struct rlimit) {
1642                                         .rlim_cur = x,
1643                                         .rlim_max = x,
1644                                 };
1645
1646                         r = rlimit_format(&nl, &f);
1647                         if (r < 0)
1648                                 return r;
1649
1650                         if (c->rlimit[ri])
1651                                 *c->rlimit[ri] = nl;
1652                         else {
1653                                 c->rlimit[ri] = newdup(struct rlimit, &nl, 1);
1654                                 if (!c->rlimit[ri])
1655                                         return -ENOMEM;
1656                         }
1657
1658                         unit_write_drop_in_private_format(u, mode, name, "%s=%s", name, f);
1659                 }
1660
1661                 return 1;
1662         }
1663
1664         return 0;
1665 }