src/core/dbus-execute.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2010 Lennart Poettering
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU Lesser General Public License as published by
  10   the Free Software Foundation; either version 2.1 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   Lesser General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include <sys/prctl.h>
  23
  24 #ifdef HAVE_SECCOMP
  25 #include <seccomp.h>
  26 #endif
  27
  28 #include "bus-util.h"
  29 #include "missing.h"
  30 #include "ioprio.h"
  31 #include "strv.h"
  32 #include "fileio.h"
  33 #include "execute.h"
  34 #include "dbus-execute.h"
  35 #include "capability.h"
  36 #include "env-util.h"
  37 #include "af-list.h"
  38 #include "namespace.h"
  39
  40 #ifdef HAVE_SECCOMP
  41 #include "seccomp-util.h"
  42 #endif
  43
  44 BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_exec_output, exec_output, ExecOutput);
  45
  46 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_exec_input, exec_input, ExecInput);
  47
  48 static BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_protect_home, protect_home, ProtectHome);
  49 static BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_protect_system, protect_system, ProtectSystem);
  50
  51 static int property_get_environment_files(
  52                 sd_bus *bus,
  53                 const char *path,
  54                 const char *interface,
  55                 const char *property,
  56                 sd_bus_message *reply,
  57                 void *userdata,
  58                 sd_bus_error *error) {
  59
  60         ExecContext *c = userdata;
  61         char **j;
  62         int r;
  63
  64         assert(bus);
  65         assert(reply);
  66         assert(c);
  67
  68         r = sd_bus_message_open_container(reply, 'a', "(sb)");
  69         if (r < 0)
  70                 return r;
  71
  72         STRV_FOREACH(j, c->environment_files) {
  73                 const char *fn = *j;
  74
  75                 r = sd_bus_message_append(reply, "(sb)", fn[0] == '-' ? fn + 1 : fn, fn[0] == '-');
  76                 if (r < 0)
  77                         return r;
  78         }
  79
  80         return sd_bus_message_close_container(reply);
  81 }
  82
  83 static int property_get_rlimit(
  84                 sd_bus *bus,
  85                 const char *path,
  86                 const char *interface,
  87                 const char *property,
  88                 sd_bus_message *reply,
  89                 void *userdata,
  90                 sd_bus_error *error) {
  91
  92         struct rlimit *rl;
  93         uint64_t u;
  94         rlim_t x;
  95
  96         assert(bus);
  97         assert(reply);
  98         assert(userdata);
  99
 100         rl = *(struct rlimit**) userdata;
 101         if (rl)
 102                 x = rl->rlim_max;
 103         else {
 104                 struct rlimit buf = {};
 105                 int z;
 106
 107                 z = rlimit_from_string(property);
 108                 assert(z >= 0);
 109
 110                 getrlimit(z, &buf);
 111                 x = buf.rlim_max;
 112         }
 113
 114         /* rlim_t might have different sizes, let's map
 115          * RLIMIT_INFINITY to (uint64_t) -1, so that it is the same on
 116          * all archs */
 117         u = x == RLIM_INFINITY ? (uint64_t) -1 : (uint64_t) x;
 118
 119         return sd_bus_message_append(reply, "t", u);
 120 }
 121
 122 static int property_get_oom_score_adjust(
 123                 sd_bus *bus,
 124                 const char *path,
 125                 const char *interface,
 126                 const char *property,
 127                 sd_bus_message *reply,
 128                 void *userdata,
 129                 sd_bus_error *error) {
 130
 131
 132         ExecContext *c = userdata;
 133         int32_t n;
 134
 135         assert(bus);
 136         assert(reply);
 137         assert(c);
 138
 139         if (c->oom_score_adjust_set)
 140                 n = c->oom_score_adjust;
 141         else {
 142                 _cleanup_free_ char *t = NULL;
 143
 144                 n = 0;
 145                 if (read_one_line_file("/proc/self/oom_score_adj", &t) >= 0)
 146                         safe_atoi(t, &n);
 147         }
 148
 149         return sd_bus_message_append(reply, "i", n);
 150 }
 151
 152 static int property_get_nice(
 153                 sd_bus *bus,
 154                 const char *path,
 155                 const char *interface,
 156                 const char *property,
 157                 sd_bus_message *reply,
 158                 void *userdata,
 159                 sd_bus_error *error) {
 160
 161
 162         ExecContext *c = userdata;
 163         int32_t n;
 164
 165         assert(bus);
 166         assert(reply);
 167         assert(c);
 168
 169         if (c->nice_set)
 170                 n = c->nice;
 171         else {
 172                 errno = 0;
 173                 n = getpriority(PRIO_PROCESS, 0);
 174                 if (errno != 0)
 175                         n = 0;
 176         }
 177
 178         return sd_bus_message_append(reply, "i", n);
 179 }
 180
 181 static int property_get_ioprio(
 182                 sd_bus *bus,
 183                 const char *path,
 184                 const char *interface,
 185                 const char *property,
 186                 sd_bus_message *reply,
 187                 void *userdata,
 188                 sd_bus_error *error) {
 189
 190
 191         ExecContext *c = userdata;
 192         int32_t n;
 193
 194         assert(bus);
 195         assert(reply);
 196         assert(c);
 197
 198         if (c->ioprio_set)
 199                 n = c->ioprio;
 200         else {
 201                 n = ioprio_get(IOPRIO_WHO_PROCESS, 0);
 202                 if (n < 0)
 203                         n = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 4);
 204         }
 205
 206         return sd_bus_message_append(reply, "i", n);
 207 }
 208
 209 static int property_get_cpu_sched_policy(
 210                 sd_bus *bus,
 211                 const char *path,
 212                 const char *interface,
 213                 const char *property,
 214                 sd_bus_message *reply,
 215                 void *userdata,
 216                 sd_bus_error *error) {
 217
 218         ExecContext *c = userdata;
 219         int32_t n;
 220
 221         assert(bus);
 222         assert(reply);
 223         assert(c);
 224
 225         if (c->cpu_sched_set)
 226                 n = c->cpu_sched_policy;
 227         else {
 228                 n = sched_getscheduler(0);
 229                 if (n < 0)
 230                         n = SCHED_OTHER;
 231         }
 232
 233         return sd_bus_message_append(reply, "i", n);
 234 }
 235
 236 static int property_get_cpu_sched_priority(
 237                 sd_bus *bus,
 238                 const char *path,
 239                 const char *interface,
 240                 const char *property,
 241                 sd_bus_message *reply,
 242                 void *userdata,
 243                 sd_bus_error *error) {
 244
 245         ExecContext *c = userdata;
 246         int32_t n;
 247
 248         assert(bus);
 249         assert(reply);
 250         assert(c);
 251
 252         if (c->cpu_sched_set)
 253                 n = c->cpu_sched_priority;
 254         else {
 255                 struct sched_param p = {};
 256
 257                 if (sched_getparam(0, &p) >= 0)
 258                         n = p.sched_priority;
 259                 else
 260                         n = 0;
 261         }
 262
 263         return sd_bus_message_append(reply, "i", n);
 264 }
 265
 266 static int property_get_cpu_affinity(
 267                 sd_bus *bus,
 268                 const char *path,
 269                 const char *interface,
 270                 const char *property,
 271                 sd_bus_message *reply,
 272                 void *userdata,
 273                 sd_bus_error *error) {
 274
 275         ExecContext *c = userdata;
 276
 277         assert(bus);
 278         assert(reply);
 279         assert(c);
 280
 281         if (c->cpuset)
 282                 return sd_bus_message_append_array(reply, 'y', c->cpuset, CPU_ALLOC_SIZE(c->cpuset_ncpus));
 283         else
 284                 return sd_bus_message_append_array(reply, 'y', NULL, 0);
 285 }
 286
 287 static int property_get_timer_slack_nsec(
 288                 sd_bus *bus,
 289                 const char *path,
 290                 const char *interface,
 291                 const char *property,
 292                 sd_bus_message *reply,
 293                 void *userdata,
 294                 sd_bus_error *error) {
 295
 296         ExecContext *c = userdata;
 297         uint64_t u;
 298
 299         assert(bus);
 300         assert(reply);
 301         assert(c);
 302
 303         if (c->timer_slack_nsec != NSEC_INFINITY)
 304                 u = (uint64_t) c->timer_slack_nsec;
 305         else
 306                 u = (uint64_t) prctl(PR_GET_TIMERSLACK);
 307
 308         return sd_bus_message_append(reply, "t", u);
 309 }
 310
 311 static int property_get_capability_bounding_set(
 312                 sd_bus *bus,
 313                 const char *path,
 314                 const char *interface,
 315                 const char *property,
 316                 sd_bus_message *reply,
 317                 void *userdata,
 318                 sd_bus_error *error) {
 319
 320         ExecContext *c = userdata;
 321
 322         assert(bus);
 323         assert(reply);
 324         assert(c);
 325
 326         /* We store this negated internally, to match the kernel, but
 327          * we expose it normalized. */
 328         return sd_bus_message_append(reply, "t", ~c->capability_bounding_set_drop);
 329 }
 330
 331 static int property_get_capabilities(
 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_cap_free_charp_ char *t = NULL;
 342         const char *s;
 343
 344         assert(bus);
 345         assert(reply);
 346         assert(c);
 347
 348         if (c->capabilities)
 349                 s = t = cap_to_text(c->capabilities, NULL);
 350         else
 351                 s = "";
 352
 353         if (!s)
 354                 return -ENOMEM;
 355
 356         return sd_bus_message_append(reply, "s", s);
 357 }
 358
 359 static int property_get_syscall_filter(
 360                 sd_bus *bus,
 361                 const char *path,
 362                 const char *interface,
 363                 const char *property,
 364                 sd_bus_message *reply,
 365                 void *userdata,
 366                 sd_bus_error *error) {
 367
 368         ExecContext *c = userdata;
 369         _cleanup_strv_free_ char **l = NULL;
 370         int r;
 371
 372 #ifdef HAVE_SECCOMP
 373         Iterator i;
 374         void *id;
 375 #endif
 376
 377         assert(bus);
 378         assert(reply);
 379         assert(c);
 380
 381         r = sd_bus_message_open_container(reply, 'r', "bas");
 382         if (r < 0)
 383                 return r;
 384
 385         r = sd_bus_message_append(reply, "b", c->syscall_whitelist);
 386         if (r < 0)
 387                 return r;
 388
 389 #ifdef HAVE_SECCOMP
 390         SET_FOREACH(id, c->syscall_filter, i) {
 391                 char *name;
 392
 393                 name = seccomp_syscall_resolve_num_arch(SCMP_ARCH_NATIVE, PTR_TO_INT(id) - 1);
 394                 if (!name)
 395                         continue;
 396
 397                 r = strv_consume(&l, name);
 398                 if (r < 0)
 399                         return r;
 400         }
 401 #endif
 402
 403         strv_sort(l);
 404
 405         r = sd_bus_message_append_strv(reply, l);
 406         if (r < 0)
 407                 return r;
 408
 409         return sd_bus_message_close_container(reply);
 410 }
 411
 412 static int property_get_syscall_archs(
 413                 sd_bus *bus,
 414                 const char *path,
 415                 const char *interface,
 416                 const char *property,
 417                 sd_bus_message *reply,
 418                 void *userdata,
 419                 sd_bus_error *error) {
 420
 421         ExecContext *c = userdata;
 422         _cleanup_strv_free_ char **l = NULL;
 423         int r;
 424
 425 #ifdef HAVE_SECCOMP
 426         Iterator i;
 427         void *id;
 428 #endif
 429
 430         assert(bus);
 431         assert(reply);
 432         assert(c);
 433
 434 #ifdef HAVE_SECCOMP
 435         SET_FOREACH(id, c->syscall_archs, i) {
 436                 const char *name;
 437
 438                 name = seccomp_arch_to_string(PTR_TO_UINT32(id) - 1);
 439                 if (!name)
 440                         continue;
 441
 442                 r = strv_extend(&l, name);
 443                 if (r < 0)
 444                         return -ENOMEM;
 445         }
 446 #endif
 447
 448         strv_sort(l);
 449
 450         r = sd_bus_message_append_strv(reply, l);
 451         if (r < 0)
 452                 return r;
 453
 454         return 0;
 455 }
 456
 457 static int property_get_syscall_errno(
 458                 sd_bus *bus,
 459                 const char *path,
 460                 const char *interface,
 461                 const char *property,
 462                 sd_bus_message *reply,
 463                 void *userdata,
 464                 sd_bus_error *error) {
 465
 466         ExecContext *c = userdata;
 467
 468         assert(bus);
 469         assert(reply);
 470         assert(c);
 471
 472         return sd_bus_message_append(reply, "i", (int32_t) c->syscall_errno);
 473 }
 474
 475 static int property_get_selinux_context(
 476                 sd_bus *bus,
 477                 const char *path,
 478                 const char *interface,
 479                 const char *property,
 480                 sd_bus_message *reply,
 481                 void *userdata,
 482                 sd_bus_error *error) {
 483
 484         ExecContext *c = userdata;
 485
 486         assert(bus);
 487         assert(reply);
 488         assert(c);
 489
 490         return sd_bus_message_append(reply, "(bs)", c->selinux_context_ignore, c->selinux_context);
 491 }
 492
 493 static int property_get_apparmor_profile(
 494                 sd_bus *bus,
 495                 const char *path,
 496                 const char *interface,
 497                 const char *property,
 498                 sd_bus_message *reply,
 499                 void *userdata,
 500                 sd_bus_error *error) {
 501
 502         ExecContext *c = userdata;
 503
 504         assert(bus);
 505         assert(reply);
 506         assert(c);
 507
 508         return sd_bus_message_append(reply, "(bs)", c->apparmor_profile_ignore, c->apparmor_profile);
 509 }
 510
 511 static int property_get_smack_process_label(
 512                 sd_bus *bus,
 513                 const char *path,
 514                 const char *interface,
 515                 const char *property,
 516                 sd_bus_message *reply,
 517                 void *userdata,
 518                 sd_bus_error *error) {
 519
 520         ExecContext *c = userdata;
 521
 522         assert(bus);
 523         assert(reply);
 524         assert(c);
 525
 526         return sd_bus_message_append(reply, "(bs)", c->smack_process_label_ignore, c->smack_process_label);
 527 }
 528
 529 static int property_get_personality(
 530                 sd_bus *bus,
 531                 const char *path,
 532                 const char *interface,
 533                 const char *property,
 534                 sd_bus_message *reply,
 535                 void *userdata,
 536                 sd_bus_error *error) {
 537
 538         ExecContext *c = userdata;
 539
 540         assert(bus);
 541         assert(reply);
 542         assert(c);
 543
 544         return sd_bus_message_append(reply, "s", personality_to_string(c->personality));
 545 }
 546
 547 static int property_get_address_families(
 548                 sd_bus *bus,
 549                 const char *path,
 550                 const char *interface,
 551                 const char *property,
 552                 sd_bus_message *reply,
 553                 void *userdata,
 554                 sd_bus_error *error) {
 555
 556         ExecContext *c = userdata;
 557         _cleanup_strv_free_ char **l = NULL;
 558         Iterator i;
 559         void *af;
 560         int r;
 561
 562         assert(bus);
 563         assert(reply);
 564         assert(c);
 565
 566         r = sd_bus_message_open_container(reply, 'r', "bas");
 567         if (r < 0)
 568                 return r;
 569
 570         r = sd_bus_message_append(reply, "b", c->address_families_whitelist);
 571         if (r < 0)
 572                 return r;
 573
 574         SET_FOREACH(af, c->address_families, i) {
 575                 const char *name;
 576
 577                 name = af_to_name(PTR_TO_INT(af));
 578                 if (!name)
 579                         continue;
 580
 581                 r = strv_extend(&l, name);
 582                 if (r < 0)
 583                         return -ENOMEM;
 584         }
 585
 586         strv_sort(l);
 587
 588         r = sd_bus_message_append_strv(reply, l);
 589         if (r < 0)
 590                 return r;
 591
 592         return sd_bus_message_close_container(reply);
 593 }
 594
 595 const sd_bus_vtable bus_exec_vtable[] = {
 596         SD_BUS_VTABLE_START(0),
 597         SD_BUS_PROPERTY("Environment", "as", NULL, offsetof(ExecContext, environment), SD_BUS_VTABLE_PROPERTY_CONST),
 598         SD_BUS_PROPERTY("EnvironmentFiles", "a(sb)", property_get_environment_files, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 599         SD_BUS_PROPERTY("UMask", "u", bus_property_get_mode, offsetof(ExecContext, umask), SD_BUS_VTABLE_PROPERTY_CONST),
 600         SD_BUS_PROPERTY("LimitCPU", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
 601         SD_BUS_PROPERTY("LimitFSIZE", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
 602         SD_BUS_PROPERTY("LimitDATA", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
 603         SD_BUS_PROPERTY("LimitSTACK", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
 604         SD_BUS_PROPERTY("LimitCORE", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
 605         SD_BUS_PROPERTY("LimitRSS", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
 606         SD_BUS_PROPERTY("LimitNOFILE", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
 607         SD_BUS_PROPERTY("LimitAS", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
 608         SD_BUS_PROPERTY("LimitNPROC", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
 609         SD_BUS_PROPERTY("LimitMEMLOCK", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
 610         SD_BUS_PROPERTY("LimitLOCKS", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
 611         SD_BUS_PROPERTY("LimitSIGPENDING", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
 612         SD_BUS_PROPERTY("LimitMSGQUEUE", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
 613         SD_BUS_PROPERTY("LimitNICE", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
 614         SD_BUS_PROPERTY("LimitRTPRIO", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
 615         SD_BUS_PROPERTY("LimitRTTIME", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
 616         SD_BUS_PROPERTY("WorkingDirectory", "s", NULL, offsetof(ExecContext, working_directory), SD_BUS_VTABLE_PROPERTY_CONST),
 617         SD_BUS_PROPERTY("RootDirectory", "s", NULL, offsetof(ExecContext, root_directory), SD_BUS_VTABLE_PROPERTY_CONST),
 618         SD_BUS_PROPERTY("OOMScoreAdjust", "i", property_get_oom_score_adjust, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 619         SD_BUS_PROPERTY("Nice", "i", property_get_nice, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 620         SD_BUS_PROPERTY("IOScheduling", "i", property_get_ioprio, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 621         SD_BUS_PROPERTY("CPUSchedulingPolicy", "i", property_get_cpu_sched_policy, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 622         SD_BUS_PROPERTY("CPUSchedulingPriority", "i", property_get_cpu_sched_priority, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 623         SD_BUS_PROPERTY("CPUAffinity", "ay", property_get_cpu_affinity, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 624         SD_BUS_PROPERTY("TimerSlackNSec", "t", property_get_timer_slack_nsec, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 625         SD_BUS_PROPERTY("CPUSchedulingResetOnFork", "b", bus_property_get_bool, offsetof(ExecContext, cpu_sched_reset_on_fork), SD_BUS_VTABLE_PROPERTY_CONST),
 626         SD_BUS_PROPERTY("NonBlocking", "b", bus_property_get_bool, offsetof(ExecContext, non_blocking), SD_BUS_VTABLE_PROPERTY_CONST),
 627         SD_BUS_PROPERTY("StandardInput", "s", property_get_exec_input, offsetof(ExecContext, std_input), SD_BUS_VTABLE_PROPERTY_CONST),
 628         SD_BUS_PROPERTY("StandardOutput", "s", bus_property_get_exec_output, offsetof(ExecContext, std_output), SD_BUS_VTABLE_PROPERTY_CONST),
 629         SD_BUS_PROPERTY("StandardError", "s", bus_property_get_exec_output, offsetof(ExecContext, std_error), SD_BUS_VTABLE_PROPERTY_CONST),
 630         SD_BUS_PROPERTY("TTYPath", "s", NULL, offsetof(ExecContext, tty_path), SD_BUS_VTABLE_PROPERTY_CONST),
 631         SD_BUS_PROPERTY("TTYReset", "b", bus_property_get_bool, offsetof(ExecContext, tty_reset), SD_BUS_VTABLE_PROPERTY_CONST),
 632         SD_BUS_PROPERTY("TTYVHangup", "b", bus_property_get_bool, offsetof(ExecContext, tty_vhangup), SD_BUS_VTABLE_PROPERTY_CONST),
 633         SD_BUS_PROPERTY("TTYVTDisallocate", "b", bus_property_get_bool, offsetof(ExecContext, tty_vt_disallocate), SD_BUS_VTABLE_PROPERTY_CONST),
 634         SD_BUS_PROPERTY("SyslogPriority", "i", bus_property_get_int, offsetof(ExecContext, syslog_priority), SD_BUS_VTABLE_PROPERTY_CONST),
 635         SD_BUS_PROPERTY("SyslogIdentifier", "s", NULL, offsetof(ExecContext, syslog_identifier), SD_BUS_VTABLE_PROPERTY_CONST),
 636         SD_BUS_PROPERTY("SyslogLevelPrefix", "b", bus_property_get_bool, offsetof(ExecContext, syslog_level_prefix), SD_BUS_VTABLE_PROPERTY_CONST),
 637         SD_BUS_PROPERTY("Capabilities", "s", property_get_capabilities, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 638         SD_BUS_PROPERTY("SecureBits", "i", bus_property_get_int, offsetof(ExecContext, secure_bits), SD_BUS_VTABLE_PROPERTY_CONST),
 639         SD_BUS_PROPERTY("CapabilityBoundingSet", "t", property_get_capability_bounding_set, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 640         SD_BUS_PROPERTY("User", "s", NULL, offsetof(ExecContext, user), SD_BUS_VTABLE_PROPERTY_CONST),
 641         SD_BUS_PROPERTY("Group", "s", NULL, offsetof(ExecContext, group), SD_BUS_VTABLE_PROPERTY_CONST),
 642         SD_BUS_PROPERTY("SupplementaryGroups", "as", NULL, offsetof(ExecContext, supplementary_groups), SD_BUS_VTABLE_PROPERTY_CONST),
 643         SD_BUS_PROPERTY("PAMName", "s", NULL, offsetof(ExecContext, pam_name), SD_BUS_VTABLE_PROPERTY_CONST),
 644         SD_BUS_PROPERTY("ReadWriteDirectories", "as", NULL, offsetof(ExecContext, read_write_dirs), SD_BUS_VTABLE_PROPERTY_CONST),
 645         SD_BUS_PROPERTY("ReadOnlyDirectories", "as", NULL, offsetof(ExecContext, read_only_dirs), SD_BUS_VTABLE_PROPERTY_CONST),
 646         SD_BUS_PROPERTY("InaccessibleDirectories", "as", NULL, offsetof(ExecContext, inaccessible_dirs), SD_BUS_VTABLE_PROPERTY_CONST),
 647         SD_BUS_PROPERTY("MountFlags", "t", bus_property_get_ulong, offsetof(ExecContext, mount_flags), SD_BUS_VTABLE_PROPERTY_CONST),
 648         SD_BUS_PROPERTY("PrivateTmp", "b", bus_property_get_bool, offsetof(ExecContext, private_tmp), SD_BUS_VTABLE_PROPERTY_CONST),
 649         SD_BUS_PROPERTY("PrivateNetwork", "b", bus_property_get_bool, offsetof(ExecContext, private_network), SD_BUS_VTABLE_PROPERTY_CONST),
 650         SD_BUS_PROPERTY("PrivateDevices", "b", bus_property_get_bool, offsetof(ExecContext, private_devices), SD_BUS_VTABLE_PROPERTY_CONST),
 651         SD_BUS_PROPERTY("ProtectHome", "s", bus_property_get_protect_home, offsetof(ExecContext, protect_home), SD_BUS_VTABLE_PROPERTY_CONST),
 652         SD_BUS_PROPERTY("ProtectSystem", "s", bus_property_get_protect_system, offsetof(ExecContext, protect_system), SD_BUS_VTABLE_PROPERTY_CONST),
 653         SD_BUS_PROPERTY("SameProcessGroup", "b", bus_property_get_bool, offsetof(ExecContext, same_pgrp), SD_BUS_VTABLE_PROPERTY_CONST),
 654         SD_BUS_PROPERTY("UtmpIdentifier", "s", NULL, offsetof(ExecContext, utmp_id), SD_BUS_VTABLE_PROPERTY_CONST),
 655         SD_BUS_PROPERTY("SELinuxContext", "(bs)", property_get_selinux_context, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 656         SD_BUS_PROPERTY("AppArmorProfile", "(bs)", property_get_apparmor_profile, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 657         SD_BUS_PROPERTY("SmackProcessLabel", "(bs)", property_get_smack_process_label, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 658         SD_BUS_PROPERTY("IgnoreSIGPIPE", "b", bus_property_get_bool, offsetof(ExecContext, ignore_sigpipe), SD_BUS_VTABLE_PROPERTY_CONST),
 659         SD_BUS_PROPERTY("NoNewPrivileges", "b", bus_property_get_bool, offsetof(ExecContext, no_new_privileges), SD_BUS_VTABLE_PROPERTY_CONST),
 660         SD_BUS_PROPERTY("SystemCallFilter", "(bas)", property_get_syscall_filter, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 661         SD_BUS_PROPERTY("SystemCallArchitectures", "as", property_get_syscall_archs, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 662         SD_BUS_PROPERTY("SystemCallErrorNumber", "i", property_get_syscall_errno, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 663         SD_BUS_PROPERTY("Personality", "s", property_get_personality, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 664         SD_BUS_PROPERTY("RestrictAddressFamilies", "(bas)", property_get_address_families, 0, SD_BUS_VTABLE_PROPERTY_CONST),
 665         SD_BUS_PROPERTY("RuntimeDirectoryMode", "u", bus_property_get_mode, offsetof(ExecContext, runtime_directory_mode), SD_BUS_VTABLE_PROPERTY_CONST),
 666         SD_BUS_PROPERTY("RuntimeDirectory", "as", NULL, offsetof(ExecContext, runtime_directory), SD_BUS_VTABLE_PROPERTY_CONST),
 667         SD_BUS_VTABLE_END
 668 };
 669
 670 static int append_exec_command(sd_bus_message *reply, ExecCommand *c) {
 671         int r;
 672
 673         assert(reply);
 674         assert(c);
 675
 676         if (!c->path)
 677                 return 0;
 678
 679         r = sd_bus_message_open_container(reply, 'r', "sasbttttuii");
 680         if (r < 0)
 681                 return r;
 682
 683         r = sd_bus_message_append(reply, "s", c->path);
 684         if (r < 0)
 685                 return r;
 686
 687         r = sd_bus_message_append_strv(reply, c->argv);
 688         if (r < 0)
 689                 return r;
 690
 691         r = sd_bus_message_append(reply, "bttttuii",
 692                                   c->ignore,
 693                                   c->exec_status.start_timestamp.realtime,
 694                                   c->exec_status.start_timestamp.monotonic,
 695                                   c->exec_status.exit_timestamp.realtime,
 696                                   c->exec_status.exit_timestamp.monotonic,
 697                                   (uint32_t) c->exec_status.pid,
 698                                   (int32_t) c->exec_status.code,
 699                                   (int32_t) c->exec_status.status);
 700         if (r < 0)
 701                 return r;
 702
 703         return sd_bus_message_close_container(reply);
 704 }
 705
 706 int bus_property_get_exec_command(
 707                 sd_bus *bus,
 708                 const char *path,
 709                 const char *interface,
 710                 const char *property,
 711                 sd_bus_message *reply,
 712                 void *userdata,
 713                 sd_bus_error *ret_error) {
 714
 715         ExecCommand *c = (ExecCommand*) userdata;
 716         int r;
 717
 718         assert(bus);
 719         assert(reply);
 720
 721         r = sd_bus_message_open_container(reply, 'a', "(sasbttttuii)");
 722         if (r < 0)
 723                 return r;
 724
 725         r = append_exec_command(reply, c);
 726         if (r < 0)
 727                 return r;
 728
 729         return sd_bus_message_close_container(reply);
 730 }
 731
 732 int bus_property_get_exec_command_list(
 733                 sd_bus *bus,
 734                 const char *path,
 735                 const char *interface,
 736                 const char *property,
 737                 sd_bus_message *reply,
 738                 void *userdata,
 739                 sd_bus_error *ret_error) {
 740
 741         ExecCommand *c = *(ExecCommand**) userdata;
 742         int r;
 743
 744         assert(bus);
 745         assert(reply);
 746
 747         r = sd_bus_message_open_container(reply, 'a', "(sasbttttuii)");
 748         if (r < 0)
 749                 return r;
 750
 751         LIST_FOREACH(command, c, c) {
 752                 r = append_exec_command(reply, c);
 753                 if (r < 0)
 754                         return r;
 755         }
 756
 757         return sd_bus_message_close_container(reply);
 758 }
 759
 760 int bus_exec_context_set_transient_property(
 761                 Unit *u,
 762                 ExecContext *c,
 763                 const char *name,
 764                 sd_bus_message *message,
 765                 UnitSetPropertiesMode mode,
 766                 sd_bus_error *error) {
 767
 768         int r;
 769
 770         assert(u);
 771         assert(c);
 772         assert(name);
 773         assert(message);
 774
 775         if (streq(name, "User")) {
 776                 const char *uu;
 777
 778                 r = sd_bus_message_read(message, "s", &uu);
 779                 if (r < 0)
 780                         return r;
 781
 782                 if (mode != UNIT_CHECK) {
 783
 784                         if (isempty(uu)) {
 785                                 free(c->user);
 786                                 c->user = NULL;
 787                         } else {
 788                                 char *t;
 789
 790                                 t = strdup(uu);
 791                                 if (!t)
 792                                         return -ENOMEM;
 793
 794                                 free(c->user);
 795                                 c->user = t;
 796                         }
 797
 798                         unit_write_drop_in_private_format(u, mode, name, "User=%s\n", uu);
 799                 }
 800
 801                 return 1;
 802
 803         } else if (streq(name, "Group")) {
 804                 const char *gg;
 805
 806                 r = sd_bus_message_read(message, "s", &gg);
 807                 if (r < 0)
 808                         return r;
 809
 810                 if (mode != UNIT_CHECK) {
 811
 812                         if (isempty(gg)) {
 813                                 free(c->group);
 814                                 c->group = NULL;
 815                         } else {
 816                                 char *t;
 817
 818                                 t = strdup(gg);
 819                                 if (!t)
 820                                         return -ENOMEM;
 821
 822                                 free(c->group);
 823                                 c->group = t;
 824                         }
 825
 826                         unit_write_drop_in_private_format(u, mode, name, "Group=%s\n", gg);
 827                 }
 828
 829                 return 1;
 830
 831         } else if (streq(name, "Nice")) {
 832                 int n;
 833
 834                 r = sd_bus_message_read(message, "i", &n);
 835                 if (r < 0)
 836                         return r;
 837
 838                 if (n < PRIO_MIN || n >= PRIO_MAX)
 839                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Nice value out of range");
 840
 841                 if (mode != UNIT_CHECK) {
 842                         c->nice = n;
 843                         unit_write_drop_in_private_format(u, mode, name, "Nice=%i\n", n);
 844                 }
 845
 846                 return 1;
 847
 848         } else if (streq(name, "Environment")) {
 849
 850                 _cleanup_strv_free_ char **l = NULL;
 851
 852                 r = sd_bus_message_read_strv(message, &l);
 853                 if (r < 0)
 854                         return r;
 855
 856                 if (!strv_env_is_valid(l))
 857                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment block.");
 858
 859                 if (mode != UNIT_CHECK) {
 860                         _cleanup_free_ char *joined = NULL;
 861                         char **e;
 862
 863                         e = strv_env_merge(2, c->environment, l);
 864                         if (!e)
 865                                 return -ENOMEM;
 866
 867                         strv_free(c->environment);
 868                         c->environment = e;
 869
 870                         joined = strv_join_quoted(c->environment);
 871                         if (!joined)
 872                                 return -ENOMEM;
 873
 874                         unit_write_drop_in_private_format(u, mode, name, "Environment=%s\n", joined);
 875                 }
 876
 877                 return 1;
 878
 879         } else if (rlimit_from_string(name) >= 0) {
 880                 uint64_t rl;
 881                 rlim_t x;
 882
 883                 r = sd_bus_message_read(message, "t", &rl);
 884                 if (r < 0)
 885                         return r;
 886
 887                 if (rl == (uint64_t) -1)
 888                         x = RLIM_INFINITY;
 889                 else {
 890                         x = (rlim_t) rl;
 891
 892                         if ((uint64_t) x != rl)
 893                                 return -ERANGE;
 894                 }
 895
 896                 if (mode != UNIT_CHECK) {
 897                         int z;
 898
 899                         z = rlimit_from_string(name);
 900
 901                         if (!c->rlimit[z]) {
 902                                 c->rlimit[z] = new(struct rlimit, 1);
 903                                 if (!c->rlimit[z])
 904                                         return -ENOMEM;
 905                         }
 906
 907                         c->rlimit[z]->rlim_cur = c->rlimit[z]->rlim_max = x;
 908
 909                         if (x == RLIM_INFINITY)
 910                                 unit_write_drop_in_private_format(u, mode, name, "%s=infinity\n", name);
 911                         else
 912                                 unit_write_drop_in_private_format(u, mode, name, "%s=%" PRIu64 "\n", name, rl);
 913                 }
 914
 915                 return 1;
 916         }
 917
 918         return 0;
 919 }