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 const sd_bus_vtable bus_exec_vtable[] = {
 631         SD_BUS_VTABLE_START(0),
 632         SD_BUS_PROPERTY("Environment", "as", NULL, offsetof(ExecContext, environment), SD_BUS_VTABLE_PROPERTY_CONST),
 633         SD_BUS_PROPERTY("EnvironmentFiles", "a(sb)", property_get_environment_files, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 634         SD_BUS_PROPERTY("PassEnvironment", "as", NULL, offsetof(ExecContext, pass_environment), SD_BUS_VTABLE_PROPERTY_CONST),
 635         SD_BUS_PROPERTY("UMask", "u", bus_property_get_mode, offsetof(ExecContext, umask), SD_BUS_VTABLE_PROPERTY_CONST),
 636         SD_BUS_PROPERTY("LimitCPU", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
 637         SD_BUS_PROPERTY("LimitCPUSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
 638         SD_BUS_PROPERTY("LimitFSIZE", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
 639         SD_BUS_PROPERTY("LimitFSIZESoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
 640         SD_BUS_PROPERTY("LimitDATA", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
 641         SD_BUS_PROPERTY("LimitDATASoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
 642         SD_BUS_PROPERTY("LimitSTACK", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
 643         SD_BUS_PROPERTY("LimitSTACKSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
 644         SD_BUS_PROPERTY("LimitCORE", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
 645         SD_BUS_PROPERTY("LimitCORESoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
 646         SD_BUS_PROPERTY("LimitRSS", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
 647         SD_BUS_PROPERTY("LimitRSSSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
 648         SD_BUS_PROPERTY("LimitNOFILE", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
 649         SD_BUS_PROPERTY("LimitNOFILESoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
 650         SD_BUS_PROPERTY("LimitAS", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
 651         SD_BUS_PROPERTY("LimitASSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
 652         SD_BUS_PROPERTY("LimitNPROC", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
 653         SD_BUS_PROPERTY("LimitNPROCSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
 654         SD_BUS_PROPERTY("LimitMEMLOCK", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
 655         SD_BUS_PROPERTY("LimitMEMLOCKSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
 656         SD_BUS_PROPERTY("LimitLOCKS", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
 657         SD_BUS_PROPERTY("LimitLOCKSSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
 658         SD_BUS_PROPERTY("LimitSIGPENDING", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
 659         SD_BUS_PROPERTY("LimitSIGPENDINGSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
 660         SD_BUS_PROPERTY("LimitMSGQUEUE", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
 661         SD_BUS_PROPERTY("LimitMSGQUEUESoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
 662         SD_BUS_PROPERTY("LimitNICE", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
 663         SD_BUS_PROPERTY("LimitNICESoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
 664         SD_BUS_PROPERTY("LimitRTPRIO", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
 665         SD_BUS_PROPERTY("LimitRTPRIOSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
 666         SD_BUS_PROPERTY("LimitRTTIME", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
 667         SD_BUS_PROPERTY("LimitRTTIMESoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
 668         SD_BUS_PROPERTY("WorkingDirectory", "s", property_get_working_directory, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 669         SD_BUS_PROPERTY("RootDirectory", "s", NULL, offsetof(ExecContext, root_directory), SD_BUS_VTABLE_PROPERTY_CONST),
 670         SD_BUS_PROPERTY("OOMScoreAdjust", "i", property_get_oom_score_adjust, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 671         SD_BUS_PROPERTY("Nice", "i", property_get_nice, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 672         SD_BUS_PROPERTY("IOScheduling", "i", property_get_ioprio, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 673         SD_BUS_PROPERTY("CPUSchedulingPolicy", "i", property_get_cpu_sched_policy, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 674         SD_BUS_PROPERTY("CPUSchedulingPriority", "i", property_get_cpu_sched_priority, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 675         SD_BUS_PROPERTY("CPUAffinity", "ay", property_get_cpu_affinity, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 676         SD_BUS_PROPERTY("TimerSlackNSec", "t", property_get_timer_slack_nsec, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 677         SD_BUS_PROPERTY("CPUSchedulingResetOnFork", "b", bus_property_get_bool, offsetof(ExecContext, cpu_sched_reset_on_fork), SD_BUS_VTABLE_PROPERTY_CONST),
 678         SD_BUS_PROPERTY("NonBlocking", "b", bus_property_get_bool, offsetof(ExecContext, non_blocking), SD_BUS_VTABLE_PROPERTY_CONST),
 679         SD_BUS_PROPERTY("StandardInput", "s", property_get_exec_input, offsetof(ExecContext, std_input), SD_BUS_VTABLE_PROPERTY_CONST),
 680         SD_BUS_PROPERTY("StandardOutput", "s", bus_property_get_exec_output, offsetof(ExecContext, std_output), SD_BUS_VTABLE_PROPERTY_CONST),
 681         SD_BUS_PROPERTY("StandardError", "s", bus_property_get_exec_output, offsetof(ExecContext, std_error), SD_BUS_VTABLE_PROPERTY_CONST),
 682         SD_BUS_PROPERTY("TTYPath", "s", NULL, offsetof(ExecContext, tty_path), SD_BUS_VTABLE_PROPERTY_CONST),
 683         SD_BUS_PROPERTY("TTYReset", "b", bus_property_get_bool, offsetof(ExecContext, tty_reset), SD_BUS_VTABLE_PROPERTY_CONST),
 684         SD_BUS_PROPERTY("TTYVHangup", "b", bus_property_get_bool, offsetof(ExecContext, tty_vhangup), SD_BUS_VTABLE_PROPERTY_CONST),
 685         SD_BUS_PROPERTY("TTYVTDisallocate", "b", bus_property_get_bool, offsetof(ExecContext, tty_vt_disallocate), SD_BUS_VTABLE_PROPERTY_CONST),
 686         SD_BUS_PROPERTY("SyslogPriority", "i", bus_property_get_int, offsetof(ExecContext, syslog_priority), SD_BUS_VTABLE_PROPERTY_CONST),
 687         SD_BUS_PROPERTY("SyslogIdentifier", "s", NULL, offsetof(ExecContext, syslog_identifier), SD_BUS_VTABLE_PROPERTY_CONST),
 688         SD_BUS_PROPERTY("SyslogLevelPrefix", "b", bus_property_get_bool, offsetof(ExecContext, syslog_level_prefix), SD_BUS_VTABLE_PROPERTY_CONST),
 689         SD_BUS_PROPERTY("SyslogLevel", "i", property_get_syslog_level, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 690         SD_BUS_PROPERTY("SyslogFacility", "i", property_get_syslog_facility, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 691         SD_BUS_PROPERTY("Capabilities", "s", property_get_empty_string, 0, SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
 692         SD_BUS_PROPERTY("SecureBits", "i", bus_property_get_int, offsetof(ExecContext, secure_bits), SD_BUS_VTABLE_PROPERTY_CONST),
 693         SD_BUS_PROPERTY("CapabilityBoundingSet", "t", property_get_capability_bounding_set, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 694         SD_BUS_PROPERTY("AmbientCapabilities", "t", property_get_ambient_capabilities, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 695         SD_BUS_PROPERTY("User", "s", NULL, offsetof(ExecContext, user), SD_BUS_VTABLE_PROPERTY_CONST),
 696         SD_BUS_PROPERTY("Group", "s", NULL, offsetof(ExecContext, group), SD_BUS_VTABLE_PROPERTY_CONST),
 697         SD_BUS_PROPERTY("DynamicUser", "b", bus_property_get_bool, offsetof(ExecContext, dynamic_user), SD_BUS_VTABLE_PROPERTY_CONST),
 698         SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(ExecContext, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST),
 699         SD_BUS_PROPERTY("SupplementaryGroups", "as", NULL, offsetof(ExecContext, supplementary_groups), SD_BUS_VTABLE_PROPERTY_CONST),
 700         SD_BUS_PROPERTY("PAMName", "s", NULL, offsetof(ExecContext, pam_name), SD_BUS_VTABLE_PROPERTY_CONST),
 701         SD_BUS_PROPERTY("ReadWriteDirectories", "as", NULL, offsetof(ExecContext, read_write_paths), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
 702         SD_BUS_PROPERTY("ReadOnlyDirectories", "as", NULL, offsetof(ExecContext, read_only_paths), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
 703         SD_BUS_PROPERTY("InaccessibleDirectories", "as", NULL, offsetof(ExecContext, inaccessible_paths), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
 704         SD_BUS_PROPERTY("ReadWritePaths", "as", NULL, offsetof(ExecContext, read_write_paths), SD_BUS_VTABLE_PROPERTY_CONST),
 705         SD_BUS_PROPERTY("ReadOnlyPaths", "as", NULL, offsetof(ExecContext, read_only_paths), SD_BUS_VTABLE_PROPERTY_CONST),
 706         SD_BUS_PROPERTY("InaccessiblePaths", "as", NULL, offsetof(ExecContext, inaccessible_paths), SD_BUS_VTABLE_PROPERTY_CONST),
 707         SD_BUS_PROPERTY("MountFlags", "t", bus_property_get_ulong, offsetof(ExecContext, mount_flags), SD_BUS_VTABLE_PROPERTY_CONST),
 708         SD_BUS_PROPERTY("PrivateTmp", "b", bus_property_get_bool, offsetof(ExecContext, private_tmp), SD_BUS_VTABLE_PROPERTY_CONST),
 709         SD_BUS_PROPERTY("PrivateDevices", "b", bus_property_get_bool, offsetof(ExecContext, private_devices), SD_BUS_VTABLE_PROPERTY_CONST),
 710         SD_BUS_PROPERTY("PrivateNetwork", "b", bus_property_get_bool, offsetof(ExecContext, private_network), SD_BUS_VTABLE_PROPERTY_CONST),
 711         SD_BUS_PROPERTY("PrivateUsers", "b", bus_property_get_bool, offsetof(ExecContext, private_users), SD_BUS_VTABLE_PROPERTY_CONST),
 712         SD_BUS_PROPERTY("ProtectHome", "s", bus_property_get_protect_home, offsetof(ExecContext, protect_home), SD_BUS_VTABLE_PROPERTY_CONST),
 713         SD_BUS_PROPERTY("ProtectSystem", "s", bus_property_get_protect_system, offsetof(ExecContext, protect_system), SD_BUS_VTABLE_PROPERTY_CONST),
 714         SD_BUS_PROPERTY("SameProcessGroup", "b", bus_property_get_bool, offsetof(ExecContext, same_pgrp), SD_BUS_VTABLE_PROPERTY_CONST),
 715         SD_BUS_PROPERTY("UtmpIdentifier", "s", NULL, offsetof(ExecContext, utmp_id), SD_BUS_VTABLE_PROPERTY_CONST),
 716         SD_BUS_PROPERTY("UtmpMode", "s", property_get_exec_utmp_mode, offsetof(ExecContext, utmp_mode), SD_BUS_VTABLE_PROPERTY_CONST),
 717         SD_BUS_PROPERTY("SELinuxContext", "(bs)", property_get_selinux_context, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 718         SD_BUS_PROPERTY("AppArmorProfile", "(bs)", property_get_apparmor_profile, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 719         SD_BUS_PROPERTY("SmackProcessLabel", "(bs)", property_get_smack_process_label, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 720         SD_BUS_PROPERTY("IgnoreSIGPIPE", "b", bus_property_get_bool, offsetof(ExecContext, ignore_sigpipe), SD_BUS_VTABLE_PROPERTY_CONST),
 721         SD_BUS_PROPERTY("NoNewPrivileges", "b", bus_property_get_bool, offsetof(ExecContext, no_new_privileges), SD_BUS_VTABLE_PROPERTY_CONST),
 722         SD_BUS_PROPERTY("SystemCallFilter", "(bas)", property_get_syscall_filter, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 723         SD_BUS_PROPERTY("SystemCallArchitectures", "as", property_get_syscall_archs, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 724         SD_BUS_PROPERTY("SystemCallErrorNumber", "i", property_get_syscall_errno, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 725         SD_BUS_PROPERTY("Personality", "s", property_get_personality, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 726         SD_BUS_PROPERTY("RestrictAddressFamilies", "(bas)", property_get_address_families, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 727         SD_BUS_PROPERTY("RuntimeDirectoryMode", "u", bus_property_get_mode, offsetof(ExecContext, runtime_directory_mode), SD_BUS_VTABLE_PROPERTY_CONST),
 728         SD_BUS_PROPERTY("RuntimeDirectory", "as", NULL, offsetof(ExecContext, runtime_directory), SD_BUS_VTABLE_PROPERTY_CONST),
 729         SD_BUS_PROPERTY("MemoryDenyWriteExecute", "b", bus_property_get_bool, offsetof(ExecContext, memory_deny_write_execute), SD_BUS_VTABLE_PROPERTY_CONST),
 730         SD_BUS_PROPERTY("RestrictRealtime", "b", bus_property_get_bool, offsetof(ExecContext, restrict_realtime), SD_BUS_VTABLE_PROPERTY_CONST),
 731         SD_BUS_VTABLE_END
 732 };
 733
 734 static int append_exec_command(sd_bus_message *reply, ExecCommand *c) {
 735         int r;
 736
 737         assert(reply);
 738         assert(c);
 739
 740         if (!c->path)
 741                 return 0;
 742
 743         r = sd_bus_message_open_container(reply, 'r', "sasbttttuii");
 744         if (r < 0)
 745                 return r;
 746
 747         r = sd_bus_message_append(reply, "s", c->path);
 748         if (r < 0)
 749                 return r;
 750
 751         r = sd_bus_message_append_strv(reply, c->argv);
 752         if (r < 0)
 753                 return r;
 754
 755         r = sd_bus_message_append(reply, "bttttuii",
 756                                   c->ignore,
 757                                   c->exec_status.start_timestamp.realtime,
 758                                   c->exec_status.start_timestamp.monotonic,
 759                                   c->exec_status.exit_timestamp.realtime,
 760                                   c->exec_status.exit_timestamp.monotonic,
 761                                   (uint32_t) c->exec_status.pid,
 762                                   (int32_t) c->exec_status.code,
 763                                   (int32_t) c->exec_status.status);
 764         if (r < 0)
 765                 return r;
 766
 767         return sd_bus_message_close_container(reply);
 768 }
 769
 770 int bus_property_get_exec_command(
 771                 sd_bus *bus,
 772                 const char *path,
 773                 const char *interface,
 774                 const char *property,
 775                 sd_bus_message *reply,
 776                 void *userdata,
 777                 sd_bus_error *ret_error) {
 778
 779         ExecCommand *c = (ExecCommand*) userdata;
 780         int r;
 781
 782         assert(bus);
 783         assert(reply);
 784
 785         r = sd_bus_message_open_container(reply, 'a', "(sasbttttuii)");
 786         if (r < 0)
 787                 return r;
 788
 789         r = append_exec_command(reply, c);
 790         if (r < 0)
 791                 return r;
 792
 793         return sd_bus_message_close_container(reply);
 794 }
 795
 796 int bus_property_get_exec_command_list(
 797                 sd_bus *bus,
 798                 const char *path,
 799                 const char *interface,
 800                 const char *property,
 801                 sd_bus_message *reply,
 802                 void *userdata,
 803                 sd_bus_error *ret_error) {
 804
 805         ExecCommand *c = *(ExecCommand**) userdata;
 806         int r;
 807
 808         assert(bus);
 809         assert(reply);
 810
 811         r = sd_bus_message_open_container(reply, 'a', "(sasbttttuii)");
 812         if (r < 0)
 813                 return r;
 814
 815         LIST_FOREACH(command, c, c) {
 816                 r = append_exec_command(reply, c);
 817                 if (r < 0)
 818                         return r;
 819         }
 820
 821         return sd_bus_message_close_container(reply);
 822 }
 823
 824 int bus_exec_context_set_transient_property(
 825                 Unit *u,
 826                 ExecContext *c,
 827                 const char *name,
 828                 sd_bus_message *message,
 829                 UnitSetPropertiesMode mode,
 830                 sd_bus_error *error) {
 831
 832         const char *soft = NULL;
 833         int r, ri;
 834
 835         assert(u);
 836         assert(c);
 837         assert(name);
 838         assert(message);
 839
 840         if (streq(name, "User")) {
 841                 const char *uu;
 842
 843                 r = sd_bus_message_read(message, "s", &uu);
 844                 if (r < 0)
 845                         return r;
 846
 847                 if (!isempty(uu) && !valid_user_group_name_or_id(uu))
 848                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid user name: %s", uu);
 849
 850                 if (mode != UNIT_CHECK) {
 851
 852                         if (isempty(uu))
 853                                 c->user = mfree(c->user);
 854                         else if (free_and_strdup(&c->user, uu) < 0)
 855                                 return -ENOMEM;
 856
 857                         unit_write_drop_in_private_format(u, mode, name, "User=%s", uu);
 858                 }
 859
 860                 return 1;
 861
 862         } else if (streq(name, "Group")) {
 863                 const char *gg;
 864
 865                 r = sd_bus_message_read(message, "s", &gg);
 866                 if (r < 0)
 867                         return r;
 868
 869                 if (!isempty(gg) && !valid_user_group_name_or_id(gg))
 870                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid group name: %s", gg);
 871
 872                 if (mode != UNIT_CHECK) {
 873
 874                         if (isempty(gg))
 875                                 c->group = mfree(c->group);
 876                         else if (free_and_strdup(&c->group, gg) < 0)
 877                                 return -ENOMEM;
 878
 879                         unit_write_drop_in_private_format(u, mode, name, "Group=%s", gg);
 880                 }
 881
 882                 return 1;
 883         } else if (streq(name, "SyslogIdentifier")) {
 884                 const char *id;
 885
 886                 r = sd_bus_message_read(message, "s", &id);
 887                 if (r < 0)
 888                         return r;
 889
 890                 if (mode != UNIT_CHECK) {
 891
 892                         if (isempty(id))
 893                                 c->syslog_identifier = mfree(c->syslog_identifier);
 894                         else if (free_and_strdup(&c->syslog_identifier, id) < 0)
 895                                 return -ENOMEM;
 896
 897                         unit_write_drop_in_private_format(u, mode, name, "SyslogIdentifier=%s", id);
 898                 }
 899
 900                 return 1;
 901         } else if (streq(name, "SyslogLevel")) {
 902                 int level;
 903
 904                 r = sd_bus_message_read(message, "i", &level);
 905                 if (r < 0)
 906                         return r;
 907
 908                 if (!log_level_is_valid(level))
 909                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Log level value out of range");
 910
 911                 if (mode != UNIT_CHECK) {
 912                         c->syslog_priority = (c->syslog_priority & LOG_FACMASK) | level;
 913                         unit_write_drop_in_private_format(u, mode, name, "SyslogLevel=%i", level);
 914                 }
 915
 916                 return 1;
 917         } else if (streq(name, "SyslogFacility")) {
 918                 int facility;
 919
 920                 r = sd_bus_message_read(message, "i", &facility);
 921                 if (r < 0)
 922                         return r;
 923
 924                 if (!log_facility_unshifted_is_valid(facility))
 925                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Log facility value out of range");
 926
 927                 if (mode != UNIT_CHECK) {
 928                         c->syslog_priority = (facility << 3) | LOG_PRI(c->syslog_priority);
 929                         unit_write_drop_in_private_format(u, mode, name, "SyslogFacility=%i", facility);
 930                 }
 931
 932                 return 1;
 933         } else if (streq(name, "Nice")) {
 934                 int n;
 935
 936                 r = sd_bus_message_read(message, "i", &n);
 937                 if (r < 0)
 938                         return r;
 939
 940                 if (!nice_is_valid(n))
 941                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Nice value out of range");
 942
 943                 if (mode != UNIT_CHECK) {
 944                         c->nice = n;
 945                         unit_write_drop_in_private_format(u, mode, name, "Nice=%i", n);
 946                 }
 947
 948                 return 1;
 949
 950         } else if (STR_IN_SET(name, "TTYPath", "RootDirectory")) {
 951                 const char *s;
 952
 953                 r = sd_bus_message_read(message, "s", &s);
 954                 if (r < 0)
 955                         return r;
 956
 957                 if (!path_is_absolute(s))
 958                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "%s takes an absolute path", name);
 959
 960                 if (mode != UNIT_CHECK) {
 961                         if (streq(name, "TTYPath"))
 962                                 r = free_and_strdup(&c->tty_path, s);
 963                         else {
 964                                 assert(streq(name, "RootDirectory"));
 965                                 r = free_and_strdup(&c->root_directory, s);
 966                         }
 967                         if (r < 0)
 968                                 return r;
 969
 970                         unit_write_drop_in_private_format(u, mode, name, "%s=%s", name, s);
 971                 }
 972
 973                 return 1;
 974
 975         } else if (streq(name, "WorkingDirectory")) {
 976                 const char *s;
 977                 bool missing_ok;
 978
 979                 r = sd_bus_message_read(message, "s", &s);
 980                 if (r < 0)
 981                         return r;
 982
 983                 if (s[0] == '-') {
 984                         missing_ok = true;
 985                         s++;
 986                 } else
 987                         missing_ok = false;
 988
 989                 if (!streq(s, "~") && !path_is_absolute(s))
 990                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "WorkingDirectory= expects an absolute path or '~'");
 991
 992                 if (mode != UNIT_CHECK) {
 993                         if (streq(s, "~")) {
 994                                 c->working_directory = mfree(c->working_directory);
 995                                 c->working_directory_home = true;
 996                         } else {
 997                                 r = free_and_strdup(&c->working_directory, s);
 998                                 if (r < 0)
 999                                         return r;
1000
1001                                 c->working_directory_home = false;
1002                         }
1003
1004                         c->working_directory_missing_ok = missing_ok;
1005                         unit_write_drop_in_private_format(u, mode, name, "WorkingDirectory=%s%s", missing_ok ? "-" : "", s);
1006                 }
1007
1008                 return 1;
1009
1010         } else if (streq(name, "StandardInput")) {
1011                 const char *s;
1012                 ExecInput p;
1013
1014                 r = sd_bus_message_read(message, "s", &s);
1015                 if (r < 0)
1016                         return r;
1017
1018                 p = exec_input_from_string(s);
1019                 if (p < 0)
1020                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid standard input name");
1021
1022                 if (mode != UNIT_CHECK) {
1023                         c->std_input = p;
1024
1025                         unit_write_drop_in_private_format(u, mode, name, "StandardInput=%s", exec_input_to_string(p));
1026                 }
1027
1028                 return 1;
1029
1030
1031         } else if (streq(name, "StandardOutput")) {
1032                 const char *s;
1033                 ExecOutput p;
1034
1035                 r = sd_bus_message_read(message, "s", &s);
1036                 if (r < 0)
1037                         return r;
1038
1039                 p = exec_output_from_string(s);
1040                 if (p < 0)
1041                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid standard output name");
1042
1043                 if (mode != UNIT_CHECK) {
1044                         c->std_output = p;
1045
1046                         unit_write_drop_in_private_format(u, mode, name, "StandardOutput=%s", exec_output_to_string(p));
1047                 }
1048
1049                 return 1;
1050
1051         } else if (streq(name, "StandardError")) {
1052                 const char *s;
1053                 ExecOutput p;
1054
1055                 r = sd_bus_message_read(message, "s", &s);
1056                 if (r < 0)
1057                         return r;
1058
1059                 p = exec_output_from_string(s);
1060                 if (p < 0)
1061                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid standard error name");
1062
1063                 if (mode != UNIT_CHECK) {
1064                         c->std_error = p;
1065
1066                         unit_write_drop_in_private_format(u, mode, name, "StandardError=%s", exec_output_to_string(p));
1067                 }
1068
1069                 return 1;
1070
1071         } else if (STR_IN_SET(name,
1072                               "IgnoreSIGPIPE", "TTYVHangup", "TTYReset",
1073                               "PrivateTmp", "PrivateDevices", "PrivateNetwork", "PrivateUsers",
1074                               "NoNewPrivileges", "SyslogLevelPrefix", "MemoryDenyWriteExecute",
1075                               "RestrictRealtime", "DynamicUser", "RemoveIPC")) {
1076                 int b;
1077
1078                 r = sd_bus_message_read(message, "b", &b);
1079                 if (r < 0)
1080                         return r;
1081
1082                 if (mode != UNIT_CHECK) {
1083                         if (streq(name, "IgnoreSIGPIPE"))
1084                                 c->ignore_sigpipe = b;
1085                         else if (streq(name, "TTYVHangup"))
1086                                 c->tty_vhangup = b;
1087                         else if (streq(name, "TTYReset"))
1088                                 c->tty_reset = b;
1089                         else if (streq(name, "PrivateTmp"))
1090                                 c->private_tmp = b;
1091                         else if (streq(name, "PrivateDevices"))
1092                                 c->private_devices = b;
1093                         else if (streq(name, "PrivateNetwork"))
1094                                 c->private_network = b;
1095                         else if (streq(name, "PrivateUsers"))
1096                                 c->private_users = b;
1097                         else if (streq(name, "NoNewPrivileges"))
1098                                 c->no_new_privileges = b;
1099                         else if (streq(name, "SyslogLevelPrefix"))
1100                                 c->syslog_level_prefix = b;
1101                         else if (streq(name, "MemoryDenyWriteExecute"))
1102                                 c->memory_deny_write_execute = b;
1103                         else if (streq(name, "RestrictRealtime"))
1104                                 c->restrict_realtime = b;
1105                         else if (streq(name, "DynamicUser"))
1106                                 c->dynamic_user = b;
1107                         else if (streq(name, "RemoveIPC"))
1108                                 c->remove_ipc = b;
1109
1110                         unit_write_drop_in_private_format(u, mode, name, "%s=%s", name, yes_no(b));
1111                 }
1112
1113                 return 1;
1114
1115         } else if (streq(name, "UtmpIdentifier")) {
1116                 const char *id;
1117
1118                 r = sd_bus_message_read(message, "s", &id);
1119                 if (r < 0)
1120                         return r;
1121
1122                 if (mode != UNIT_CHECK) {
1123                         if (isempty(id))
1124                                 c->utmp_id = mfree(c->utmp_id);
1125                         else if (free_and_strdup(&c->utmp_id, id) < 0)
1126                                 return -ENOMEM;
1127
1128                         unit_write_drop_in_private_format(u, mode, name, "UtmpIdentifier=%s", strempty(id));
1129                 }
1130
1131                 return 1;
1132
1133         } else if (streq(name, "UtmpMode")) {
1134                 const char *s;
1135                 ExecUtmpMode m;
1136
1137                 r = sd_bus_message_read(message, "s", &s);
1138                 if (r < 0)
1139                         return r;
1140
1141                 m = exec_utmp_mode_from_string(s);
1142                 if (m < 0)
1143                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid utmp mode");
1144
1145                 if (mode != UNIT_CHECK) {
1146                         c->utmp_mode = m;
1147
1148                         unit_write_drop_in_private_format(u, mode, name, "UtmpMode=%s", exec_utmp_mode_to_string(m));
1149                 }
1150
1151                 return 1;
1152
1153         } else if (streq(name, "PAMName")) {
1154                 const char *n;
1155
1156                 r = sd_bus_message_read(message, "s", &n);
1157                 if (r < 0)
1158                         return r;
1159
1160                 if (mode != UNIT_CHECK) {
1161                         if (isempty(n))
1162                                 c->pam_name = mfree(c->pam_name);
1163                         else if (free_and_strdup(&c->pam_name, n) < 0)
1164                                 return -ENOMEM;
1165
1166                         unit_write_drop_in_private_format(u, mode, name, "PAMName=%s", strempty(n));
1167                 }
1168
1169                 return 1;
1170
1171         } else if (streq(name, "Environment")) {
1172
1173                 _cleanup_strv_free_ char **l = NULL;
1174
1175                 r = sd_bus_message_read_strv(message, &l);
1176                 if (r < 0)
1177                         return r;
1178
1179                 if (!strv_env_is_valid(l))
1180                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment block.");
1181
1182                 if (mode != UNIT_CHECK) {
1183                         _cleanup_free_ char *joined = NULL;
1184                         char **e;
1185
1186                         if (strv_length(l) == 0) {
1187                                 c->environment = strv_free(c->environment);
1188                                 unit_write_drop_in_private_format(u, mode, name, "Environment=");
1189                         } else {
1190                                 e = strv_env_merge(2, c->environment, l);
1191                                 if (!e)
1192                                         return -ENOMEM;
1193
1194                                 strv_free(c->environment);
1195                                 c->environment = e;
1196
1197                                 joined = strv_join_quoted(c->environment);
1198                                 if (!joined)
1199                                         return -ENOMEM;
1200
1201                                 unit_write_drop_in_private_format(u, mode, name, "Environment=%s", joined);
1202                         }
1203                 }
1204
1205                 return 1;
1206
1207         } else if (streq(name, "TimerSlackNSec")) {
1208
1209                 nsec_t n;
1210
1211                 r = sd_bus_message_read(message, "t", &n);
1212                 if (r < 0)
1213                         return r;
1214
1215                 if (mode != UNIT_CHECK) {
1216                         c->timer_slack_nsec = n;
1217                         unit_write_drop_in_private_format(u, mode, name, "TimerSlackNSec=" NSEC_FMT, n);
1218                 }
1219
1220                 return 1;
1221
1222         } else if (streq(name, "OOMScoreAdjust")) {
1223                 int oa;
1224
1225                 r = sd_bus_message_read(message, "i", &oa);
1226                 if (r < 0)
1227                         return r;
1228
1229                 if (!oom_score_adjust_is_valid(oa))
1230                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "OOM score adjust value out of range");
1231
1232                 if (mode != UNIT_CHECK) {
1233                         c->oom_score_adjust = oa;
1234                         c->oom_score_adjust_set = true;
1235                         unit_write_drop_in_private_format(u, mode, name, "OOMScoreAdjust=%i", oa);
1236                 }
1237
1238                 return 1;
1239
1240         } else if (streq(name, "EnvironmentFiles")) {
1241
1242                 _cleanup_free_ char *joined = NULL;
1243                 _cleanup_fclose_ FILE *f = NULL;
1244                 _cleanup_free_ char **l = NULL;
1245                 size_t size = 0;
1246                 char **i;
1247
1248                 r = sd_bus_message_enter_container(message, 'a', "(sb)");
1249                 if (r < 0)
1250                         return r;
1251
1252                 f = open_memstream(&joined, &size);
1253                 if (!f)
1254                         return -ENOMEM;
1255
1256                 STRV_FOREACH(i, c->environment_files)
1257                         fprintf(f, "EnvironmentFile=%s", *i);
1258
1259                 while ((r = sd_bus_message_enter_container(message, 'r', "sb")) > 0) {
1260                         const char *path;
1261                         int b;
1262
1263                         r = sd_bus_message_read(message, "sb", &path, &b);
1264                         if (r < 0)
1265                                 return r;
1266
1267                         r = sd_bus_message_exit_container(message);
1268                         if (r < 0)
1269                                 return r;
1270
1271                         if (!isempty(path) && !path_is_absolute(path))
1272                                 return sd_bus_error_set_errnof(error, EINVAL, "Path %s is not absolute.", path);
1273
1274                         if (mode != UNIT_CHECK) {
1275                                 char *buf = NULL;
1276
1277                                 buf = strjoin(b ? "-" : "", path, NULL);
1278                                 if (!buf)
1279                                         return -ENOMEM;
1280
1281                                 fprintf(f, "EnvironmentFile=%s", buf);
1282
1283                                 r = strv_consume(&l, buf);
1284                                 if (r < 0)
1285                                         return r;
1286                         }
1287                 }
1288                 if (r < 0)
1289                         return r;
1290
1291                 r = sd_bus_message_exit_container(message);
1292                 if (r < 0)
1293                         return r;
1294
1295                 r = fflush_and_check(f);
1296                 if (r < 0)
1297                         return r;
1298
1299                 if (mode != UNIT_CHECK) {
1300                         if (strv_isempty(l)) {
1301                                 c->environment_files = strv_free(c->environment_files);
1302                                 unit_write_drop_in_private(u, mode, name, "EnvironmentFile=");
1303                         } else {
1304                                 r = strv_extend_strv(&c->environment_files, l, true);
1305                                 if (r < 0)
1306                                         return r;
1307
1308                                 unit_write_drop_in_private(u, mode, name, joined);
1309                         }
1310                 }
1311
1312                 return 1;
1313
1314         } else if (streq(name, "PassEnvironment")) {
1315
1316                 _cleanup_strv_free_ char **l = NULL;
1317
1318                 r = sd_bus_message_read_strv(message, &l);
1319                 if (r < 0)
1320                         return r;
1321
1322                 if (!strv_env_name_is_valid(l))
1323                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid PassEnvironment block.");
1324
1325                 if (mode != UNIT_CHECK) {
1326                         if (strv_isempty(l)) {
1327                                 c->pass_environment = strv_free(c->pass_environment);
1328                                 unit_write_drop_in_private_format(u, mode, name, "PassEnvironment=");
1329                         } else {
1330                                 _cleanup_free_ char *joined = NULL;
1331
1332                                 r = strv_extend_strv(&c->pass_environment, l, true);
1333                                 if (r < 0)
1334                                         return r;
1335
1336                                 joined = strv_join_quoted(c->pass_environment);
1337                                 if (!joined)
1338                                         return -ENOMEM;
1339
1340                                 unit_write_drop_in_private_format(u, mode, name, "PassEnvironment=%s", joined);
1341                         }
1342                 }
1343
1344                 return 1;
1345
1346         } else if (STR_IN_SET(name, "ReadWriteDirectories", "ReadOnlyDirectories", "InaccessibleDirectories",
1347                               "ReadWritePaths", "ReadOnlyPaths", "InaccessiblePaths")) {
1348                 _cleanup_strv_free_ char **l = NULL;
1349                 char ***dirs;
1350                 char **p;
1351
1352                 r = sd_bus_message_read_strv(message, &l);
1353                 if (r < 0)
1354                         return r;
1355
1356                 STRV_FOREACH(p, l) {
1357                         int offset;
1358                         if (!utf8_is_valid(*p))
1359                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid %s", name);
1360
1361                         offset = **p == '-';
1362                         if (!path_is_absolute(*p + offset))
1363                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid %s", name);
1364                 }
1365
1366                 if (mode != UNIT_CHECK) {
1367                         _cleanup_free_ char *joined = NULL;
1368
1369                         if (STR_IN_SET(name, "ReadWriteDirectories", "ReadWritePaths"))
1370                                 dirs = &c->read_write_paths;
1371                         else if (STR_IN_SET(name, "ReadOnlyDirectories", "ReadOnlyPaths"))
1372                                 dirs = &c->read_only_paths;
1373                         else /* "InaccessiblePaths" */
1374                                 dirs = &c->inaccessible_paths;
1375
1376                         if (strv_length(l) == 0) {
1377                                 *dirs = strv_free(*dirs);
1378                                 unit_write_drop_in_private_format(u, mode, name, "%s=", name);
1379                         } else {
1380                                 r = strv_extend_strv(dirs, l, true);
1381
1382                                 if (r < 0)
1383                                         return -ENOMEM;
1384
1385                                 joined = strv_join_quoted(*dirs);
1386                                 if (!joined)
1387                                         return -ENOMEM;
1388
1389                                 unit_write_drop_in_private_format(u, mode, name, "%s=%s", name, joined);
1390                         }
1391
1392                 }
1393
1394                 return 1;
1395
1396         } else if (streq(name, "ProtectSystem")) {
1397                 const char *s;
1398                 ProtectSystem ps;
1399
1400                 r = sd_bus_message_read(message, "s", &s);
1401                 if (r < 0)
1402                         return r;
1403
1404                 r = parse_boolean(s);
1405                 if (r > 0)
1406                         ps = PROTECT_SYSTEM_YES;
1407                 else if (r == 0)
1408                         ps = PROTECT_SYSTEM_NO;
1409                 else {
1410                         ps = protect_system_from_string(s);
1411                         if (ps < 0)
1412                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Failed to parse protect system value");
1413                 }
1414
1415                 if (mode != UNIT_CHECK) {
1416                         c->protect_system = ps;
1417                         unit_write_drop_in_private_format(u, mode, name, "%s=%s", name, s);
1418                 }
1419
1420                 return 1;
1421
1422         } else if (streq(name, "ProtectHome")) {
1423                 const char *s;
1424                 ProtectHome ph;
1425
1426                 r = sd_bus_message_read(message, "s", &s);
1427                 if (r < 0)
1428                         return r;
1429
1430                 r = parse_boolean(s);
1431                 if (r > 0)
1432                         ph = PROTECT_HOME_YES;
1433                 else if (r == 0)
1434                         ph = PROTECT_HOME_NO;
1435                 else {
1436                         ph = protect_home_from_string(s);
1437                         if (ph < 0)
1438                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Failed to parse protect home value");
1439                 }
1440
1441                 if (mode != UNIT_CHECK) {
1442                         c->protect_home = ph;
1443                         unit_write_drop_in_private_format(u, mode, name, "%s=%s", name, s);
1444                 }
1445
1446                 return 1;
1447
1448         } else if (streq(name, "RuntimeDirectory")) {
1449                 _cleanup_strv_free_ char **l = NULL;
1450                 char **p;
1451
1452                 r = sd_bus_message_read_strv(message, &l);
1453                 if (r < 0)
1454                         return r;
1455
1456                 STRV_FOREACH(p, l) {
1457                         if (!filename_is_valid(*p))
1458                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Runtime directory is not valid %s", *p);
1459                 }
1460
1461                 if (mode != UNIT_CHECK) {
1462                         _cleanup_free_ char *joined = NULL;
1463
1464                         if (strv_isempty(l)) {
1465                                 c->runtime_directory = strv_free(c->runtime_directory);
1466                                 unit_write_drop_in_private_format(u, mode, name, "%s=", name);
1467                         } else {
1468                                 r = strv_extend_strv(&c->runtime_directory, l, true);
1469
1470                                 if (r < 0)
1471                                         return -ENOMEM;
1472
1473                                 joined = strv_join_quoted(c->runtime_directory);
1474                                 if (!joined)
1475                                         return -ENOMEM;
1476
1477                                 unit_write_drop_in_private_format(u, mode, name, "%s=%s", name, joined);
1478                         }
1479                 }
1480
1481                 return 1;
1482
1483         } else if (streq(name, "SELinuxContext")) {
1484                 const char *s;
1485
1486                 r = sd_bus_message_read(message, "s", &s);
1487                 if (r < 0)
1488                         return r;
1489
1490                 if (mode != UNIT_CHECK) {
1491                         if (isempty(s))
1492                                 c->selinux_context = mfree(c->selinux_context);
1493                         else if (free_and_strdup(&c->selinux_context, s) < 0)
1494                                 return -ENOMEM;
1495
1496                         unit_write_drop_in_private_format(u, mode, name, "%s=%s", name, strempty(s));
1497                 }
1498
1499                 return 1;
1500
1501         }
1502
1503         ri = rlimit_from_string(name);
1504         if (ri < 0) {
1505                 soft = endswith(name, "Soft");
1506                 if (soft) {
1507                         const char *n;
1508
1509                         n = strndupa(name, soft - name);
1510                         ri = rlimit_from_string(n);
1511                         if (ri >= 0)
1512                                 name = n;
1513
1514                 }
1515         }
1516
1517         if (ri >= 0) {
1518                 uint64_t rl;
1519                 rlim_t x;
1520
1521                 r = sd_bus_message_read(message, "t", &rl);
1522                 if (r < 0)
1523                         return r;
1524
1525                 if (rl == (uint64_t) -1)
1526                         x = RLIM_INFINITY;
1527                 else {
1528                         x = (rlim_t) rl;
1529
1530                         if ((uint64_t) x != rl)
1531                                 return -ERANGE;
1532                 }
1533
1534                 if (mode != UNIT_CHECK) {
1535                         _cleanup_free_ char *f = NULL;
1536                         struct rlimit nl;
1537
1538                         if (c->rlimit[ri]) {
1539                                 nl = *c->rlimit[ri];
1540
1541                                 if (soft)
1542                                         nl.rlim_cur = x;
1543                                 else
1544                                         nl.rlim_max = x;
1545                         } else
1546                                 /* When the resource limit is not initialized yet, then assign the value to both fields */
1547                                 nl = (struct rlimit) {
1548                                         .rlim_cur = x,
1549                                         .rlim_max = x,
1550                                 };
1551
1552                         r = rlimit_format(&nl, &f);
1553                         if (r < 0)
1554                                 return r;
1555
1556                         if (c->rlimit[ri])
1557                                 *c->rlimit[ri] = nl;
1558                         else {
1559                                 c->rlimit[ri] = newdup(struct rlimit, &nl, 1);
1560                                 if (!c->rlimit[ri])
1561                                         return -ENOMEM;
1562                         }
1563
1564                         unit_write_drop_in_private_format(u, mode, name, "%s=%s", name, f);
1565                 }
1566
1567                 return 1;
1568         }
1569
1570         return 0;
1571 }