src/basic/unit-name.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 <errno.h>
  21 #include <stddef.h>
  22 #include <stdint.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 #include "alloc-util.h"
  27 #include "bus-label.h"
  28 #include "glob-util.h"
  29 #include "hexdecoct.h"
  30 #include "macro.h"
  31 #include "path-util.h"
  32 #include "string-table.h"
  33 #include "string-util.h"
  34 #include "strv.h"
  35 #include "unit-name.h"
  36
  37 /* Characters valid in a unit name. */
  38 #define VALID_CHARS                             \
  39         DIGITS                                  \
  40         LETTERS                                 \
  41         ":-_.\\"
  42
  43 /* The same, but also permits the single @ character that may appear */
  44 #define VALID_CHARS_WITH_AT                     \
  45         "@"                                     \
  46         VALID_CHARS
  47
  48 /* All chars valid in a unit name glob */
  49 #define VALID_CHARS_GLOB                        \
  50         VALID_CHARS_WITH_AT                     \
  51         "[]!-*?"
  52
  53 bool unit_name_is_valid(const char *n, UnitNameFlags flags) {
  54         const char *e, *i, *at;
  55
  56         assert((flags & ~(UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE|UNIT_NAME_TEMPLATE)) == 0);
  57
  58         if (_unlikely_(flags == 0))
  59                 return false;
  60
  61         if (isempty(n))
  62                 return false;
  63
  64         if (strlen(n) >= UNIT_NAME_MAX)
  65                 return false;
  66
  67         e = strrchr(n, '.');
  68         if (!e || e == n)
  69                 return false;
  70
  71         if (unit_type_from_string(e + 1) < 0)
  72                 return false;
  73
  74         for (i = n, at = NULL; i < e; i++) {
  75
  76                 if (*i == '@' && !at)
  77                         at = i;
  78
  79                 if (!strchr("@" VALID_CHARS, *i))
  80                         return false;
  81         }
  82
  83         if (at == n)
  84                 return false;
  85
  86         if (flags & UNIT_NAME_PLAIN)
  87                 if (!at)
  88                         return true;
  89
  90         if (flags & UNIT_NAME_INSTANCE)
  91                 if (at && e > at + 1)
  92                         return true;
  93
  94         if (flags & UNIT_NAME_TEMPLATE)
  95                 if (at && e == at + 1)
  96                         return true;
  97
  98         return false;
  99 }
 100
 101 bool unit_prefix_is_valid(const char *p) {
 102
 103         /* We don't allow additional @ in the prefix string */
 104
 105         if (isempty(p))
 106                 return false;
 107
 108         return in_charset(p, VALID_CHARS);
 109 }
 110
 111 bool unit_instance_is_valid(const char *i) {
 112
 113         /* The max length depends on the length of the string, so we
 114          * don't really check this here. */
 115
 116         if (isempty(i))
 117                 return false;
 118
 119         /* We allow additional @ in the instance string, we do not
 120          * allow them in the prefix! */
 121
 122         return in_charset(i, "@" VALID_CHARS);
 123 }
 124
 125 bool unit_suffix_is_valid(const char *s) {
 126         if (isempty(s))
 127                 return false;
 128
 129         if (s[0] != '.')
 130                 return false;
 131
 132         if (unit_type_from_string(s + 1) < 0)
 133                 return false;
 134
 135         return true;
 136 }
 137
 138 int unit_name_to_prefix(const char *n, char **ret) {
 139         const char *p;
 140         char *s;
 141
 142         assert(n);
 143         assert(ret);
 144
 145         if (!unit_name_is_valid(n, UNIT_NAME_ANY))
 146                 return -EINVAL;
 147
 148         p = strchr(n, '@');
 149         if (!p)
 150                 p = strrchr(n, '.');
 151
 152         assert_se(p);
 153
 154         s = strndup(n, p - n);
 155         if (!s)
 156                 return -ENOMEM;
 157
 158         *ret = s;
 159         return 0;
 160 }
 161
 162 int unit_name_to_instance(const char *n, char **instance) {
 163         const char *p, *d;
 164         char *i;
 165
 166         assert(n);
 167         assert(instance);
 168
 169         if (!unit_name_is_valid(n, UNIT_NAME_ANY))
 170                 return -EINVAL;
 171
 172         /* Everything past the first @ and before the last . is the instance */
 173         p = strchr(n, '@');
 174         if (!p) {
 175                 *instance = NULL;
 176                 return 0;
 177         }
 178
 179         p++;
 180
 181         d = strrchr(p, '.');
 182         if (!d)
 183                 return -EINVAL;
 184
 185         i = strndup(p, d-p);
 186         if (!i)
 187                 return -ENOMEM;
 188
 189         *instance = i;
 190         return 1;
 191 }
 192
 193 int unit_name_to_prefix_and_instance(const char *n, char **ret) {
 194         const char *d;
 195         char *s;
 196
 197         assert(n);
 198         assert(ret);
 199
 200         if (!unit_name_is_valid(n, UNIT_NAME_ANY))
 201                 return -EINVAL;
 202
 203         d = strrchr(n, '.');
 204         if (!d)
 205                 return -EINVAL;
 206
 207         s = strndup(n, d - n);
 208         if (!s)
 209                 return -ENOMEM;
 210
 211         *ret = s;
 212         return 0;
 213 }
 214
 215 UnitType unit_name_to_type(const char *n) {
 216         const char *e;
 217
 218         assert(n);
 219
 220         if (!unit_name_is_valid(n, UNIT_NAME_ANY))
 221                 return _UNIT_TYPE_INVALID;
 222
 223         assert_se(e = strrchr(n, '.'));
 224
 225         return unit_type_from_string(e + 1);
 226 }
 227
 228 int unit_name_change_suffix(const char *n, const char *suffix, char **ret) {
 229         char *e, *s;
 230         size_t a, b;
 231
 232         assert(n);
 233         assert(suffix);
 234         assert(ret);
 235
 236         if (!unit_name_is_valid(n, UNIT_NAME_ANY))
 237                 return -EINVAL;
 238
 239         if (!unit_suffix_is_valid(suffix))
 240                 return -EINVAL;
 241
 242         assert_se(e = strrchr(n, '.'));
 243
 244         a = e - n;
 245         b = strlen(suffix);
 246
 247         s = new(char, a + b + 1);
 248         if (!s)
 249                 return -ENOMEM;
 250
 251         strcpy(mempcpy(s, n, a), suffix);
 252         *ret = s;
 253
 254         return 0;
 255 }
 256
 257 int unit_name_build(const char *prefix, const char *instance, const char *suffix, char **ret) {
 258         char *s;
 259
 260         assert(prefix);
 261         assert(suffix);
 262         assert(ret);
 263
 264         if (!unit_prefix_is_valid(prefix))
 265                 return -EINVAL;
 266
 267         if (instance && !unit_instance_is_valid(instance))
 268                 return -EINVAL;
 269
 270         if (!unit_suffix_is_valid(suffix))
 271                 return -EINVAL;
 272
 273         if (!instance)
 274                 s = strappend(prefix, suffix);
 275         else
 276                 s = strjoin(prefix, "@", instance, suffix);
 277         if (!s)
 278                 return -ENOMEM;
 279
 280         *ret = s;
 281         return 0;
 282 }
 283
 284 static char *do_escape_char(char c, char *t) {
 285         assert(t);
 286
 287         *(t++) = '\\';
 288         *(t++) = 'x';
 289         *(t++) = hexchar(c >> 4);
 290         *(t++) = hexchar(c);
 291
 292         return t;
 293 }
 294
 295 static char *do_escape(const char *f, char *t) {
 296         assert(f);
 297         assert(t);
 298
 299         /* do not create units with a leading '.', like for "/.dotdir" mount points */
 300         if (*f == '.') {
 301                 t = do_escape_char(*f, t);
 302                 f++;
 303         }
 304
 305         for (; *f; f++) {
 306                 if (*f == '/')
 307                         *(t++) = '-';
 308                 else if (IN_SET(*f, '-', '\\') || !strchr(VALID_CHARS, *f))
 309                         t = do_escape_char(*f, t);
 310                 else
 311                         *(t++) = *f;
 312         }
 313
 314         return t;
 315 }
 316
 317 char *unit_name_escape(const char *f) {
 318         char *r, *t;
 319
 320         assert(f);
 321
 322         r = new(char, strlen(f)*4+1);
 323         if (!r)
 324                 return NULL;
 325
 326         t = do_escape(f, r);
 327         *t = 0;
 328
 329         return r;
 330 }
 331
 332 int unit_name_unescape(const char *f, char **ret) {
 333         _cleanup_free_ char *r = NULL;
 334         char *t;
 335
 336         assert(f);
 337
 338         r = strdup(f);
 339         if (!r)
 340                 return -ENOMEM;
 341
 342         for (t = r; *f; f++) {
 343                 if (*f == '-')
 344                         *(t++) = '/';
 345                 else if (*f == '\\') {
 346                         int a, b;
 347
 348                         if (f[1] != 'x')
 349                                 return -EINVAL;
 350
 351                         a = unhexchar(f[2]);
 352                         if (a < 0)
 353                                 return -EINVAL;
 354
 355                         b = unhexchar(f[3]);
 356                         if (b < 0)
 357                                 return -EINVAL;
 358
 359                         *(t++) = (char) (((uint8_t) a << 4U) | (uint8_t) b);
 360                         f += 3;
 361                 } else
 362                         *(t++) = *f;
 363         }
 364
 365         *t = 0;
 366
 367         *ret = r;
 368         r = NULL;
 369
 370         return 0;
 371 }
 372
 373 int unit_name_path_escape(const char *f, char **ret) {
 374         char *p, *s;
 375
 376         assert(f);
 377         assert(ret);
 378
 379         p = strdupa(f);
 380         if (!p)
 381                 return -ENOMEM;
 382
 383         path_kill_slashes(p);
 384
 385         if (STR_IN_SET(p, "/", ""))
 386                 s = strdup("-");
 387         else {
 388                 char *e;
 389
 390                 if (!path_is_safe(p))
 391                         return -EINVAL;
 392
 393                 /* Truncate trailing slashes */
 394                 e = endswith(p, "/");
 395                 if (e)
 396                         *e = 0;
 397
 398                 /* Truncate leading slashes */
 399                 if (p[0] == '/')
 400                         p++;
 401
 402                 s = unit_name_escape(p);
 403         }
 404         if (!s)
 405                 return -ENOMEM;
 406
 407         *ret = s;
 408         return 0;
 409 }
 410
 411 int unit_name_path_unescape(const char *f, char **ret) {
 412         char *s;
 413         int r;
 414
 415         assert(f);
 416
 417         if (isempty(f))
 418                 return -EINVAL;
 419
 420         if (streq(f, "-")) {
 421                 s = strdup("/");
 422                 if (!s)
 423                         return -ENOMEM;
 424         } else {
 425                 char *w;
 426
 427                 r = unit_name_unescape(f, &w);
 428                 if (r < 0)
 429                         return r;
 430
 431                 /* Don't accept trailing or leading slashes */
 432                 if (startswith(w, "/") || endswith(w, "/")) {
 433                         free(w);
 434                         return -EINVAL;
 435                 }
 436
 437                 /* Prefix a slash again */
 438                 s = strappend("/", w);
 439                 free(w);
 440                 if (!s)
 441                         return -ENOMEM;
 442
 443                 if (!path_is_safe(s)) {
 444                         free(s);
 445                         return -EINVAL;
 446                 }
 447         }
 448
 449         if (ret)
 450                 *ret = s;
 451         else
 452                 free(s);
 453
 454         return 0;
 455 }
 456
 457 int unit_name_replace_instance(const char *f, const char *i, char **ret) {
 458         const char *p, *e;
 459         char *s;
 460         size_t a, b;
 461
 462         assert(f);
 463         assert(i);
 464         assert(ret);
 465
 466         if (!unit_name_is_valid(f, UNIT_NAME_INSTANCE|UNIT_NAME_TEMPLATE))
 467                 return -EINVAL;
 468         if (!unit_instance_is_valid(i))
 469                 return -EINVAL;
 470
 471         assert_se(p = strchr(f, '@'));
 472         assert_se(e = strrchr(f, '.'));
 473
 474         a = p - f;
 475         b = strlen(i);
 476
 477         s = new(char, a + 1 + b + strlen(e) + 1);
 478         if (!s)
 479                 return -ENOMEM;
 480
 481         strcpy(mempcpy(mempcpy(s, f, a + 1), i, b), e);
 482
 483         *ret = s;
 484         return 0;
 485 }
 486
 487 int unit_name_template(const char *f, char **ret) {
 488         const char *p, *e;
 489         char *s;
 490         size_t a;
 491
 492         assert(f);
 493         assert(ret);
 494
 495         if (!unit_name_is_valid(f, UNIT_NAME_INSTANCE|UNIT_NAME_TEMPLATE))
 496                 return -EINVAL;
 497
 498         assert_se(p = strchr(f, '@'));
 499         assert_se(e = strrchr(f, '.'));
 500
 501         a = p - f;
 502
 503         s = new(char, a + 1 + strlen(e) + 1);
 504         if (!s)
 505                 return -ENOMEM;
 506
 507         strcpy(mempcpy(s, f, a + 1), e);
 508
 509         *ret = s;
 510         return 0;
 511 }
 512
 513 int unit_name_from_path(const char *path, const char *suffix, char **ret) {
 514         _cleanup_free_ char *p = NULL;
 515         char *s = NULL;
 516         int r;
 517
 518         assert(path);
 519         assert(suffix);
 520         assert(ret);
 521
 522         if (!unit_suffix_is_valid(suffix))
 523                 return -EINVAL;
 524
 525         r = unit_name_path_escape(path, &p);
 526         if (r < 0)
 527                 return r;
 528
 529         s = strappend(p, suffix);
 530         if (!s)
 531                 return -ENOMEM;
 532
 533         *ret = s;
 534         return 0;
 535 }
 536
 537 int unit_name_from_path_instance(const char *prefix, const char *path, const char *suffix, char **ret) {
 538         _cleanup_free_ char *p = NULL;
 539         char *s;
 540         int r;
 541
 542         assert(prefix);
 543         assert(path);
 544         assert(suffix);
 545         assert(ret);
 546
 547         if (!unit_prefix_is_valid(prefix))
 548                 return -EINVAL;
 549
 550         if (!unit_suffix_is_valid(suffix))
 551                 return -EINVAL;
 552
 553         r = unit_name_path_escape(path, &p);
 554         if (r < 0)
 555                 return r;
 556
 557         s = strjoin(prefix, "@", p, suffix);
 558         if (!s)
 559                 return -ENOMEM;
 560
 561         *ret = s;
 562         return 0;
 563 }
 564
 565 int unit_name_to_path(const char *name, char **ret) {
 566         _cleanup_free_ char *prefix = NULL;
 567         int r;
 568
 569         assert(name);
 570
 571         r = unit_name_to_prefix(name, &prefix);
 572         if (r < 0)
 573                 return r;
 574
 575         return unit_name_path_unescape(prefix, ret);
 576 }
 577
 578 char *unit_dbus_path_from_name(const char *name) {
 579         _cleanup_free_ char *e = NULL;
 580
 581         assert(name);
 582
 583         e = bus_label_escape(name);
 584         if (!e)
 585                 return NULL;
 586
 587         return strappend("/org/freedesktop/systemd1/unit/", e);
 588 }
 589
 590 int unit_name_from_dbus_path(const char *path, char **name) {
 591         const char *e;
 592         char *n;
 593
 594         e = startswith(path, "/org/freedesktop/systemd1/unit/");
 595         if (!e)
 596                 return -EINVAL;
 597
 598         n = bus_label_unescape(e);
 599         if (!n)
 600                 return -ENOMEM;
 601
 602         *name = n;
 603         return 0;
 604 }
 605
 606 const char* unit_dbus_interface_from_type(UnitType t) {
 607
 608         static const char *const table[_UNIT_TYPE_MAX] = {
 609                 [UNIT_SERVICE] = "org.freedesktop.systemd1.Service",
 610                 [UNIT_SOCKET] = "org.freedesktop.systemd1.Socket",
 611                 [UNIT_TARGET] = "org.freedesktop.systemd1.Target",
 612                 [UNIT_DEVICE] = "org.freedesktop.systemd1.Device",
 613                 [UNIT_MOUNT] = "org.freedesktop.systemd1.Mount",
 614                 [UNIT_AUTOMOUNT] = "org.freedesktop.systemd1.Automount",
 615                 [UNIT_SWAP] = "org.freedesktop.systemd1.Swap",
 616                 [UNIT_TIMER] = "org.freedesktop.systemd1.Timer",
 617                 [UNIT_PATH] = "org.freedesktop.systemd1.Path",
 618                 [UNIT_SLICE] = "org.freedesktop.systemd1.Slice",
 619                 [UNIT_SCOPE] = "org.freedesktop.systemd1.Scope",
 620         };
 621
 622         if (t < 0)
 623                 return NULL;
 624         if (t >= _UNIT_TYPE_MAX)
 625                 return NULL;
 626
 627         return table[t];
 628 }
 629
 630 const char *unit_dbus_interface_from_name(const char *name) {
 631         UnitType t;
 632
 633         t = unit_name_to_type(name);
 634         if (t < 0)
 635                 return NULL;
 636
 637         return unit_dbus_interface_from_type(t);
 638 }
 639
 640 static char *do_escape_mangle(const char *f, UnitNameMangle allow_globs, char *t) {
 641         const char *valid_chars;
 642
 643         assert(f);
 644         assert(IN_SET(allow_globs, UNIT_NAME_GLOB, UNIT_NAME_NOGLOB));
 645         assert(t);
 646
 647         /* We'll only escape the obvious characters here, to play
 648          * safe. */
 649
 650         valid_chars = allow_globs == UNIT_NAME_GLOB ? VALID_CHARS_GLOB : VALID_CHARS_WITH_AT;
 651
 652         for (; *f; f++) {
 653                 if (*f == '/')
 654                         *(t++) = '-';
 655                 else if (!strchr(valid_chars, *f))
 656                         t = do_escape_char(*f, t);
 657                 else
 658                         *(t++) = *f;
 659         }
 660
 661         return t;
 662 }
 663
 664 /**
 665  *  Convert a string to a unit name. /dev/blah is converted to dev-blah.device,
 666  *  /blah/blah is converted to blah-blah.mount, anything else is left alone,
 667  *  except that @suffix is appended if a valid unit suffix is not present.
 668  *
 669  *  If @allow_globs, globs characters are preserved. Otherwise, they are escaped.
 670  */
 671 int unit_name_mangle_with_suffix(const char *name, UnitNameMangle allow_globs, const char *suffix, char **ret) {
 672         char *s, *t;
 673         int r;
 674
 675         assert(name);
 676         assert(suffix);
 677         assert(ret);
 678
 679         if (isempty(name)) /* We cannot mangle empty unit names to become valid, sorry. */
 680                 return -EINVAL;
 681
 682         if (!unit_suffix_is_valid(suffix))
 683                 return -EINVAL;
 684
 685         /* Already a fully valid unit name? If so, no mangling is necessary... */
 686         if (unit_name_is_valid(name, UNIT_NAME_ANY))
 687                 goto good;
 688
 689         /* Already a fully valid globbing expression? If so, no mangling is necessary either... */
 690         if (allow_globs == UNIT_NAME_GLOB &&
 691             string_is_glob(name) &&
 692             in_charset(name, VALID_CHARS_GLOB))
 693                 goto good;
 694
 695         if (is_device_path(name)) {
 696                 r = unit_name_from_path(name, ".device", ret);
 697                 if (r >= 0)
 698                         return 1;
 699                 if (r != -EINVAL)
 700                         return r;
 701         }
 702
 703         if (path_is_absolute(name)) {
 704                 r = unit_name_from_path(name, ".mount", ret);
 705                 if (r >= 0)
 706                         return 1;
 707                 if (r != -EINVAL)
 708                         return r;
 709         }
 710
 711         s = new(char, strlen(name) * 4 + strlen(suffix) + 1);
 712         if (!s)
 713                 return -ENOMEM;
 714
 715         t = do_escape_mangle(name, allow_globs, s);
 716         *t = 0;
 717
 718         /* Append a suffix if it doesn't have any, but only if this is not a glob, so that we can allow "foo.*" as a
 719          * valid glob. */
 720         if ((allow_globs != UNIT_NAME_GLOB || !string_is_glob(s)) && unit_name_to_type(s) < 0)
 721                 strcpy(t, suffix);
 722
 723         *ret = s;
 724         return 1;
 725
 726 good:
 727         s = strdup(name);
 728         if (!s)
 729                 return -ENOMEM;
 730
 731         *ret = s;
 732         return 0;
 733 }
 734
 735 int slice_build_parent_slice(const char *slice, char **ret) {
 736         char *s, *dash;
 737         int r;
 738
 739         assert(slice);
 740         assert(ret);
 741
 742         if (!slice_name_is_valid(slice))
 743                 return -EINVAL;
 744
 745         if (streq(slice, "-.slice")) {
 746                 *ret = NULL;
 747                 return 0;
 748         }
 749
 750         s = strdup(slice);
 751         if (!s)
 752                 return -ENOMEM;
 753
 754         dash = strrchr(s, '-');
 755         if (dash)
 756                 strcpy(dash, ".slice");
 757         else {
 758                 r = free_and_strdup(&s, "-.slice");
 759                 if (r < 0) {
 760                         free(s);
 761                         return r;
 762                 }
 763         }
 764
 765         *ret = s;
 766         return 1;
 767 }
 768
 769 int slice_build_subslice(const char *slice, const char*name, char **ret) {
 770         char *subslice;
 771
 772         assert(slice);
 773         assert(name);
 774         assert(ret);
 775
 776         if (!slice_name_is_valid(slice))
 777                 return -EINVAL;
 778
 779         if (!unit_prefix_is_valid(name))
 780                 return -EINVAL;
 781
 782         if (streq(slice, "-.slice"))
 783                 subslice = strappend(name, ".slice");
 784         else {
 785                 char *e;
 786
 787                 assert_se(e = endswith(slice, ".slice"));
 788
 789                 subslice = new(char, (e - slice) + 1 + strlen(name) + 6 + 1);
 790                 if (!subslice)
 791                         return -ENOMEM;
 792
 793                 stpcpy(stpcpy(stpcpy(mempcpy(subslice, slice, e - slice), "-"), name), ".slice");
 794         }
 795
 796         *ret = subslice;
 797         return 0;
 798 }
 799
 800 bool slice_name_is_valid(const char *name) {
 801         const char *p, *e;
 802         bool dash = false;
 803
 804         if (!unit_name_is_valid(name, UNIT_NAME_PLAIN))
 805                 return false;
 806
 807         if (streq(name, "-.slice"))
 808                 return true;
 809
 810         e = endswith(name, ".slice");
 811         if (!e)
 812                 return false;
 813
 814         for (p = name; p < e; p++) {
 815
 816                 if (*p == '-') {
 817
 818                         /* Don't allow initial dash */
 819                         if (p == name)
 820                                 return false;
 821
 822                         /* Don't allow multiple dashes */
 823                         if (dash)
 824                                 return false;
 825
 826                         dash = true;
 827                 } else
 828                         dash = false;
 829         }
 830
 831         /* Don't allow trailing hash */
 832         if (dash)
 833                 return false;
 834
 835         return true;
 836 }
 837
 838 static const char* const unit_type_table[_UNIT_TYPE_MAX] = {
 839         [UNIT_SERVICE] = "service",
 840         [UNIT_SOCKET] = "socket",
 841         [UNIT_TARGET] = "target",
 842         [UNIT_DEVICE] = "device",
 843         [UNIT_MOUNT] = "mount",
 844         [UNIT_AUTOMOUNT] = "automount",
 845         [UNIT_SWAP] = "swap",
 846         [UNIT_TIMER] = "timer",
 847         [UNIT_PATH] = "path",
 848         [UNIT_SLICE] = "slice",
 849         [UNIT_SCOPE] = "scope",
 850 };
 851
 852 DEFINE_STRING_TABLE_LOOKUP(unit_type, UnitType);
 853
 854 static const char* const unit_load_state_table[_UNIT_LOAD_STATE_MAX] = {
 855         [UNIT_STUB] = "stub",
 856         [UNIT_LOADED] = "loaded",
 857         [UNIT_NOT_FOUND] = "not-found",
 858         [UNIT_ERROR] = "error",
 859         [UNIT_MERGED] = "merged",
 860         [UNIT_MASKED] = "masked"
 861 };
 862
 863 DEFINE_STRING_TABLE_LOOKUP(unit_load_state, UnitLoadState);
 864
 865 static const char* const unit_active_state_table[_UNIT_ACTIVE_STATE_MAX] = {
 866         [UNIT_ACTIVE] = "active",
 867         [UNIT_RELOADING] = "reloading",
 868         [UNIT_INACTIVE] = "inactive",
 869         [UNIT_FAILED] = "failed",
 870         [UNIT_ACTIVATING] = "activating",
 871         [UNIT_DEACTIVATING] = "deactivating"
 872 };
 873
 874 DEFINE_STRING_TABLE_LOOKUP(unit_active_state, UnitActiveState);
 875
 876 static const char* const automount_state_table[_AUTOMOUNT_STATE_MAX] = {
 877         [AUTOMOUNT_DEAD] = "dead",
 878         [AUTOMOUNT_WAITING] = "waiting",
 879         [AUTOMOUNT_RUNNING] = "running",
 880         [AUTOMOUNT_FAILED] = "failed"
 881 };
 882
 883 DEFINE_STRING_TABLE_LOOKUP(automount_state, AutomountState);
 884
 885 static const char* const device_state_table[_DEVICE_STATE_MAX] = {
 886         [DEVICE_DEAD] = "dead",
 887         [DEVICE_TENTATIVE] = "tentative",
 888         [DEVICE_PLUGGED] = "plugged",
 889 };
 890
 891 DEFINE_STRING_TABLE_LOOKUP(device_state, DeviceState);
 892
 893 static const char* const mount_state_table[_MOUNT_STATE_MAX] = {
 894         [MOUNT_DEAD] = "dead",
 895         [MOUNT_MOUNTING] = "mounting",
 896         [MOUNT_MOUNTING_DONE] = "mounting-done",
 897         [MOUNT_MOUNTED] = "mounted",
 898         [MOUNT_REMOUNTING] = "remounting",
 899         [MOUNT_UNMOUNTING] = "unmounting",
 900         [MOUNT_REMOUNTING_SIGTERM] = "remounting-sigterm",
 901         [MOUNT_REMOUNTING_SIGKILL] = "remounting-sigkill",
 902         [MOUNT_UNMOUNTING_SIGTERM] = "unmounting-sigterm",
 903         [MOUNT_UNMOUNTING_SIGKILL] = "unmounting-sigkill",
 904         [MOUNT_FAILED] = "failed"
 905 };
 906
 907 DEFINE_STRING_TABLE_LOOKUP(mount_state, MountState);
 908
 909 static const char* const path_state_table[_PATH_STATE_MAX] = {
 910         [PATH_DEAD] = "dead",
 911         [PATH_WAITING] = "waiting",
 912         [PATH_RUNNING] = "running",
 913         [PATH_FAILED] = "failed"
 914 };
 915
 916 DEFINE_STRING_TABLE_LOOKUP(path_state, PathState);
 917
 918 static const char* const scope_state_table[_SCOPE_STATE_MAX] = {
 919         [SCOPE_DEAD] = "dead",
 920         [SCOPE_RUNNING] = "running",
 921         [SCOPE_ABANDONED] = "abandoned",
 922         [SCOPE_STOP_SIGTERM] = "stop-sigterm",
 923         [SCOPE_STOP_SIGKILL] = "stop-sigkill",
 924         [SCOPE_FAILED] = "failed",
 925 };
 926
 927 DEFINE_STRING_TABLE_LOOKUP(scope_state, ScopeState);
 928
 929 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
 930         [SERVICE_DEAD] = "dead",
 931         [SERVICE_START_PRE] = "start-pre",
 932         [SERVICE_START] = "start",
 933         [SERVICE_START_POST] = "start-post",
 934         [SERVICE_RUNNING] = "running",
 935         [SERVICE_EXITED] = "exited",
 936         [SERVICE_RELOAD] = "reload",
 937         [SERVICE_STOP] = "stop",
 938         [SERVICE_STOP_SIGABRT] = "stop-sigabrt",
 939         [SERVICE_STOP_SIGTERM] = "stop-sigterm",
 940         [SERVICE_STOP_SIGKILL] = "stop-sigkill",
 941         [SERVICE_STOP_POST] = "stop-post",
 942         [SERVICE_FINAL_SIGTERM] = "final-sigterm",
 943         [SERVICE_FINAL_SIGKILL] = "final-sigkill",
 944         [SERVICE_FAILED] = "failed",
 945         [SERVICE_AUTO_RESTART] = "auto-restart",
 946 };
 947
 948 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
 949
 950 static const char* const slice_state_table[_SLICE_STATE_MAX] = {
 951         [SLICE_DEAD] = "dead",
 952         [SLICE_ACTIVE] = "active"
 953 };
 954
 955 DEFINE_STRING_TABLE_LOOKUP(slice_state, SliceState);
 956
 957 static const char* const socket_state_table[_SOCKET_STATE_MAX] = {
 958         [SOCKET_DEAD] = "dead",
 959         [SOCKET_START_PRE] = "start-pre",
 960         [SOCKET_START_CHOWN] = "start-chown",
 961         [SOCKET_START_POST] = "start-post",
 962         [SOCKET_LISTENING] = "listening",
 963         [SOCKET_RUNNING] = "running",
 964         [SOCKET_STOP_PRE] = "stop-pre",
 965         [SOCKET_STOP_PRE_SIGTERM] = "stop-pre-sigterm",
 966         [SOCKET_STOP_PRE_SIGKILL] = "stop-pre-sigkill",
 967         [SOCKET_STOP_POST] = "stop-post",
 968         [SOCKET_FINAL_SIGTERM] = "final-sigterm",
 969         [SOCKET_FINAL_SIGKILL] = "final-sigkill",
 970         [SOCKET_FAILED] = "failed"
 971 };
 972
 973 DEFINE_STRING_TABLE_LOOKUP(socket_state, SocketState);
 974
 975 static const char* const swap_state_table[_SWAP_STATE_MAX] = {
 976         [SWAP_DEAD] = "dead",
 977         [SWAP_ACTIVATING] = "activating",
 978         [SWAP_ACTIVATING_DONE] = "activating-done",
 979         [SWAP_ACTIVE] = "active",
 980         [SWAP_DEACTIVATING] = "deactivating",
 981         [SWAP_DEACTIVATING_SIGTERM] = "deactivating-sigterm",
 982         [SWAP_DEACTIVATING_SIGKILL] = "deactivating-sigkill",
 983         [SWAP_FAILED] = "failed"
 984 };
 985
 986 DEFINE_STRING_TABLE_LOOKUP(swap_state, SwapState);
 987
 988 static const char* const target_state_table[_TARGET_STATE_MAX] = {
 989         [TARGET_DEAD] = "dead",
 990         [TARGET_ACTIVE] = "active"
 991 };
 992
 993 DEFINE_STRING_TABLE_LOOKUP(target_state, TargetState);
 994
 995 static const char* const timer_state_table[_TIMER_STATE_MAX] = {
 996         [TIMER_DEAD] = "dead",
 997         [TIMER_WAITING] = "waiting",
 998         [TIMER_RUNNING] = "running",
 999         [TIMER_ELAPSED] = "elapsed",
1000         [TIMER_FAILED] = "failed"
1001 };
1002
1003 DEFINE_STRING_TABLE_LOOKUP(timer_state, TimerState);
1004
1005 static const char* const unit_dependency_table[_UNIT_DEPENDENCY_MAX] = {
1006         [UNIT_REQUIRES] = "Requires",
1007         [UNIT_REQUISITE] = "Requisite",
1008         [UNIT_WANTS] = "Wants",
1009         [UNIT_BINDS_TO] = "BindsTo",
1010         [UNIT_PART_OF] = "PartOf",
1011         [UNIT_REQUIRED_BY] = "RequiredBy",
1012         [UNIT_REQUISITE_OF] = "RequisiteOf",
1013         [UNIT_WANTED_BY] = "WantedBy",
1014         [UNIT_BOUND_BY] = "BoundBy",
1015         [UNIT_CONSISTS_OF] = "ConsistsOf",
1016         [UNIT_CONFLICTS] = "Conflicts",
1017         [UNIT_CONFLICTED_BY] = "ConflictedBy",
1018         [UNIT_BEFORE] = "Before",
1019         [UNIT_AFTER] = "After",
1020         [UNIT_ON_FAILURE] = "OnFailure",
1021         [UNIT_TRIGGERS] = "Triggers",
1022         [UNIT_TRIGGERED_BY] = "TriggeredBy",
1023         [UNIT_PROPAGATES_RELOAD_TO] = "PropagatesReloadTo",
1024         [UNIT_RELOAD_PROPAGATED_FROM] = "ReloadPropagatedFrom",
1025         [UNIT_JOINS_NAMESPACE_OF] = "JoinsNamespaceOf",
1026         [UNIT_REFERENCES] = "References",
1027         [UNIT_REFERENCED_BY] = "ReferencedBy",
1028 };
1029
1030 DEFINE_STRING_TABLE_LOOKUP(unit_dependency, UnitDependency);
1031
1032 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
1033         [NOTIFY_NONE] = "none",
1034         [NOTIFY_MAIN] = "main",
1035         [NOTIFY_EXEC] = "exec",
1036         [NOTIFY_ALL] = "all"
1037 };
1038
1039 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);