]> git.ipfire.org Git - thirdparty/systemd.git/blame - src/shared/condition.c
Move cpus_in_affinity_mask() to cpu-set-util.[ch]
[thirdparty/systemd.git] / src / shared / condition.c
CommitLineData
53e1b683 1/* SPDX-License-Identifier: LGPL-2.1+ */
b77c08e0 2
b77c08e0 3#include <errno.h>
a8fbdf54 4#include <fcntl.h>
84ac7bea 5#include <fnmatch.h>
a8fbdf54 6#include <limits.h>
84ac7bea 7#include <stdlib.h>
b77c08e0 8#include <string.h>
a8fbdf54 9#include <sys/stat.h>
c465a29f 10#include <sys/types.h>
5022f08a 11#include <sys/utsname.h>
a8fbdf54 12#include <time.h>
b77c08e0 13#include <unistd.h>
b77c08e0 14
d1bddcec 15#include "sd-id128.h"
84ac7bea 16
b5efdb8a 17#include "alloc-util.h"
d1bddcec 18#include "apparmor-util.h"
84ac7bea 19#include "architecture.h"
430f0182 20#include "audit-util.h"
2822da4f 21#include "cap-list.h"
e16647c3 22#include "cgroup-util.h"
3ffd4af2 23#include "condition.h"
f44b3035 24#include "cpu-set-util.h"
be405b90 25#include "efivars.h"
78d76525 26#include "env-file.h"
84ac7bea 27#include "extract-word.h"
3ffd4af2 28#include "fd-util.h"
fb8b0869 29#include "fileio.h"
7d50b32a 30#include "glob-util.h"
958b66ea 31#include "hostname-util.h"
84ac7bea 32#include "ima-util.h"
754f719a 33#include "limits-util.h"
a8fbdf54
TA
34#include "list.h"
35#include "macro.h"
049af8ad 36#include "mountpoint-util.h"
6bedfcbb 37#include "parse-util.h"
84ac7bea 38#include "path-util.h"
4e731273 39#include "proc-cmdline.h"
df0ff127 40#include "process-util.h"
84ac7bea
LP
41#include "selinux-util.h"
42#include "smack-util.h"
8fcde012 43#include "stat-util.h"
8b43440b 44#include "string-table.h"
07630cea 45#include "string-util.h"
ed440f6b 46#include "tomoyo-util.h"
c465a29f 47#include "user-util.h"
84ac7bea
LP
48#include "util.h"
49#include "virt.h"
b77c08e0
TG
50
51Condition* condition_new(ConditionType type, const char *parameter, bool trigger, bool negate) {
52 Condition *c;
53
b80ba1da 54 assert(type >= 0);
b77c08e0 55 assert(type < _CONDITION_TYPE_MAX);
8a9c6071 56 assert((!parameter) == (type == CONDITION_NULL));
b77c08e0 57
78d76525 58 c = new(Condition, 1);
b77c08e0
TG
59 if (!c)
60 return NULL;
61
78d76525
LP
62 *c = (Condition) {
63 .type = type,
64 .trigger = trigger,
65 .negate = negate,
66 };
b77c08e0 67
78d76525
LP
68 if (parameter) {
69 c->parameter = strdup(parameter);
70 if (!c->parameter)
71 return mfree(c);
b77c08e0
TG
72 }
73
74 return c;
75}
76
77void condition_free(Condition *c) {
78 assert(c);
79
80 free(c->parameter);
81 free(c);
82}
83
7bb55ed0
YW
84Condition* condition_free_list_type(Condition *head, ConditionType type) {
85 Condition *c, *n;
b77c08e0 86
7bb55ed0
YW
87 LIST_FOREACH_SAFE(conditions, c, n, head)
88 if (type < 0 || c->type == type) {
89 LIST_REMOVE(conditions, head, c);
c4f58dea 90 condition_free(c);
7bb55ed0 91 }
447021aa 92
7bb55ed0
YW
93 assert(type >= 0 || !head);
94 return head;
b77c08e0
TG
95}
96
a4705396 97static int condition_test_kernel_command_line(Condition *c) {
07318c29
LP
98 _cleanup_free_ char *line = NULL;
99 const char *p;
b77c08e0
TG
100 bool equal;
101 int r;
b77c08e0
TG
102
103 assert(c);
104 assert(c->parameter);
105 assert(c->type == CONDITION_KERNEL_COMMAND_LINE);
106
107 r = proc_cmdline(&line);
108 if (r < 0)
592fd144 109 return r;
b77c08e0 110
5d904a6a 111 equal = strchr(c->parameter, '=');
07318c29 112
c58bd76a 113 for (p = line;;) {
07318c29
LP
114 _cleanup_free_ char *word = NULL;
115 bool found;
116
12ba2c44 117 r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES|EXTRACT_RELAX);
592fd144
LP
118 if (r < 0)
119 return r;
120 if (r == 0)
a4705396 121 break;
07318c29
LP
122
123 if (equal)
124 found = streq(word, c->parameter);
125 else {
126 const char *f;
127
128 f = startswith(word, c->parameter);
4c701096 129 found = f && IN_SET(*f, 0, '=');
b77c08e0
TG
130 }
131
07318c29 132 if (found)
a4705396 133 return true;
b77c08e0 134 }
b77c08e0 135
a4705396 136 return false;
b77c08e0
TG
137}
138
ba22ff13
LP
139typedef enum {
140 /* Listed in order of checking. Note that some comparators are prefixes of others, hence the longest
141 * should be listed first. */
142 ORDER_LOWER_OR_EQUAL,
143 ORDER_GREATER_OR_EQUAL,
144 ORDER_LOWER,
145 ORDER_GREATER,
146 ORDER_EQUAL,
2877d428 147 ORDER_UNEQUAL,
ba22ff13
LP
148 _ORDER_MAX,
149 _ORDER_INVALID = -1
150} OrderOperator;
151
152static OrderOperator parse_order(const char **s) {
68c58c67
LP
153
154 static const char *const prefix[_ORDER_MAX] = {
ba22ff13
LP
155 [ORDER_LOWER_OR_EQUAL] = "<=",
156 [ORDER_GREATER_OR_EQUAL] = ">=",
157 [ORDER_LOWER] = "<",
158 [ORDER_GREATER] = ">",
159 [ORDER_EQUAL] = "=",
2877d428 160 [ORDER_UNEQUAL] = "!=",
68c58c67 161 };
5022f08a 162
ba22ff13 163 OrderOperator i;
5022f08a 164
68c58c67 165 for (i = 0; i < _ORDER_MAX; i++) {
ba22ff13
LP
166 const char *e;
167
168 e = startswith(*s, prefix[i]);
169 if (e) {
170 *s = e;
171 return i;
172 }
68c58c67
LP
173 }
174
ba22ff13
LP
175 return _ORDER_INVALID;
176}
68c58c67 177
ba22ff13 178static bool test_order(int k, OrderOperator p) {
68c58c67 179
ba22ff13 180 switch (p) {
68c58c67 181
ba22ff13 182 case ORDER_LOWER:
68c58c67
LP
183 return k < 0;
184
ba22ff13 185 case ORDER_LOWER_OR_EQUAL:
68c58c67
LP
186 return k <= 0;
187
ba22ff13 188 case ORDER_EQUAL:
68c58c67
LP
189 return k == 0;
190
2877d428
LP
191 case ORDER_UNEQUAL:
192 return k != 0;
193
ba22ff13 194 case ORDER_GREATER_OR_EQUAL:
68c58c67
LP
195 return k >= 0;
196
ba22ff13 197 case ORDER_GREATER:
68c58c67
LP
198 return k > 0;
199
200 default:
ba22ff13
LP
201 assert_not_reached("unknown order");
202
68c58c67 203 }
5022f08a
LP
204}
205
ba22ff13
LP
206static int condition_test_kernel_version(Condition *c) {
207 OrderOperator order;
208 struct utsname u;
209 const char *p;
210
211 assert(c);
212 assert(c->parameter);
213 assert(c->type == CONDITION_KERNEL_VERSION);
214
215 assert_se(uname(&u) >= 0);
216
217 p = c->parameter;
218 order = parse_order(&p);
219
220 /* No prefix? Then treat as glob string */
221 if (order < 0)
222 return fnmatch(skip_leading_chars(c->parameter, NULL), u.release, 0) == 0;
223
224 return test_order(str_verscmp(u.release, skip_leading_chars(p, NULL)), order);
225}
226
754f719a
LP
227static int condition_test_memory(Condition *c) {
228 OrderOperator order;
229 uint64_t m, k;
230 const char *p;
231 int r;
232
233 assert(c);
234 assert(c->parameter);
235 assert(c->type == CONDITION_MEMORY);
236
237 m = physical_memory();
238
239 p = c->parameter;
240 order = parse_order(&p);
241 if (order < 0)
242 order = ORDER_GREATER_OR_EQUAL; /* default to >= check, if nothing is specified. */
243
244 r = safe_atou64(p, &k);
245 if (r < 0)
246 return log_debug_errno(r, "Failed to parse size: %m");
247
248 return test_order(CMP(m, k), order);
249}
250
251static int condition_test_cpus(Condition *c) {
252 OrderOperator order;
253 const char *p;
254 unsigned k;
255 int r, n;
256
257 assert(c);
258 assert(c->parameter);
259 assert(c->type == CONDITION_CPUS);
260
261 n = cpus_in_affinity_mask();
262 if (n < 0)
263 return log_debug_errno(n, "Failed to determine CPUs in affinity mask: %m");
264
265 p = c->parameter;
266 order = parse_order(&p);
267 if (order < 0)
268 order = ORDER_GREATER_OR_EQUAL; /* default to >= check, if nothing is specified. */
269
270 r = safe_atou(p, &k);
271 if (r < 0)
272 return log_debug_errno(r, "Failed to parse number of CPUs: %m");
273
274 return test_order(CMP((unsigned) n, k), order);
275}
276
c465a29f
FS
277static int condition_test_user(Condition *c) {
278 uid_t id;
279 int r;
280 _cleanup_free_ char *username = NULL;
281 const char *u;
282
283 assert(c);
284 assert(c->parameter);
285 assert(c->type == CONDITION_USER);
286
287 r = parse_uid(c->parameter, &id);
288 if (r >= 0)
289 return id == getuid() || id == geteuid();
290
534bab66 291 if (streq("@system", c->parameter))
ece877d4 292 return uid_is_system(getuid()) || uid_is_system(geteuid());
534bab66 293
c465a29f
FS
294 username = getusername_malloc();
295 if (!username)
296 return -ENOMEM;
297
298 if (streq(username, c->parameter))
299 return 1;
300
df0ff127 301 if (getpid_cached() == 1)
c465a29f
FS
302 return streq(c->parameter, "root");
303
304 u = c->parameter;
fafff8f1 305 r = get_user_creds(&u, &id, NULL, NULL, NULL, USER_CREDS_ALLOW_MISSING);
c465a29f
FS
306 if (r < 0)
307 return 0;
308
309 return id == getuid() || id == geteuid();
310}
311
e16647c3
CD
312static int condition_test_control_group_controller(Condition *c) {
313 int r;
314 CGroupMask system_mask, wanted_mask = 0;
315
316 assert(c);
317 assert(c->parameter);
318 assert(c->type == CONDITION_CONTROL_GROUP_CONTROLLER);
319
320 r = cg_mask_supported(&system_mask);
321 if (r < 0)
322 return log_debug_errno(r, "Failed to determine supported controllers: %m");
323
324 r = cg_mask_from_string(c->parameter, &wanted_mask);
325 if (r < 0 || wanted_mask <= 0) {
326 /* This won't catch the case that we have an unknown controller
327 * mixed in with valid ones -- these are only assessed on the
328 * validity of the valid controllers found. */
329 log_debug("Failed to parse cgroup string: %s", c->parameter);
330 return 1;
331 }
332
d94a24ca 333 return FLAGS_SET(system_mask, wanted_mask);
e16647c3
CD
334}
335
c465a29f
FS
336static int condition_test_group(Condition *c) {
337 gid_t id;
338 int r;
339
340 assert(c);
341 assert(c->parameter);
342 assert(c->type == CONDITION_GROUP);
343
344 r = parse_gid(c->parameter, &id);
345 if (r >= 0)
346 return in_gid(id);
347
348 /* Avoid any NSS lookups if we are PID1 */
df0ff127 349 if (getpid_cached() == 1)
c465a29f
FS
350 return streq(c->parameter, "root");
351
352 return in_group(c->parameter) > 0;
353}
354
a4705396 355static int condition_test_virtualization(Condition *c) {
248fab74 356 int b, v;
b77c08e0
TG
357
358 assert(c);
359 assert(c->parameter);
360 assert(c->type == CONDITION_VIRTUALIZATION);
361
239a5707
ZJS
362 if (streq(c->parameter, "private-users"))
363 return running_in_userns();
364
75f86906 365 v = detect_virtualization();
592fd144
LP
366 if (v < 0)
367 return v;
b77c08e0
TG
368
369 /* First, compare with yes/no */
370 b = parse_boolean(c->parameter);
0809d774
ZJS
371 if (b >= 0)
372 return b == !!v;
b77c08e0
TG
373
374 /* Then, compare categorization */
0809d774
ZJS
375 if (streq(c->parameter, "vm"))
376 return VIRTUALIZATION_IS_VM(v);
b77c08e0 377
0809d774
ZJS
378 if (streq(c->parameter, "container"))
379 return VIRTUALIZATION_IS_CONTAINER(v);
b77c08e0
TG
380
381 /* Finally compare id */
75f86906 382 return v != VIRTUALIZATION_NONE && streq(c->parameter, virtualization_to_string(v));
b77c08e0
TG
383}
384
a4705396 385static int condition_test_architecture(Condition *c) {
592fd144 386 int a, b;
099524d7
LP
387
388 assert(c);
389 assert(c->parameter);
390 assert(c->type == CONDITION_ARCHITECTURE);
391
392 a = uname_architecture();
393 if (a < 0)
592fd144 394 return a;
099524d7
LP
395
396 if (streq(c->parameter, "native"))
397 b = native_architecture();
2cb62395 398 else {
099524d7 399 b = architecture_from_string(c->parameter);
2cb62395
LP
400 if (b < 0) /* unknown architecture? Then it's definitely not ours */
401 return false;
402 }
099524d7 403
a4705396 404 return a == b;
099524d7
LP
405}
406
a4705396 407static int condition_test_host(Condition *c) {
dc92e62c 408 _cleanup_free_ char *h = NULL;
b77c08e0 409 sd_id128_t x, y;
b77c08e0 410 int r;
b77c08e0
TG
411
412 assert(c);
413 assert(c->parameter);
414 assert(c->type == CONDITION_HOST);
415
416 if (sd_id128_from_string(c->parameter, &x) >= 0) {
417
418 r = sd_id128_get_machine(&y);
419 if (r < 0)
592fd144 420 return r;
b77c08e0 421
a4705396 422 return sd_id128_equal(x, y);
b77c08e0
TG
423 }
424
425 h = gethostname_malloc();
426 if (!h)
592fd144 427 return -ENOMEM;
b77c08e0 428
a4705396 429 return fnmatch(c->parameter, h, FNM_CASEFOLD) == 0;
b77c08e0
TG
430}
431
a4705396 432static int condition_test_ac_power(Condition *c) {
b77c08e0
TG
433 int r;
434
435 assert(c);
436 assert(c->parameter);
437 assert(c->type == CONDITION_AC_POWER);
438
439 r = parse_boolean(c->parameter);
440 if (r < 0)
592fd144 441 return r;
b77c08e0 442
a4705396 443 return (on_ac_power() != 0) == !!r;
b77c08e0
TG
444}
445
d1bddcec
LP
446static int condition_test_security(Condition *c) {
447 assert(c);
448 assert(c->parameter);
449 assert(c->type == CONDITION_SECURITY);
450
451 if (streq(c->parameter, "selinux"))
6d395665 452 return mac_selinux_use();
d1bddcec 453 if (streq(c->parameter, "smack"))
a4705396 454 return mac_smack_use();
d1bddcec 455 if (streq(c->parameter, "apparmor"))
a4705396 456 return mac_apparmor_use();
d1bddcec 457 if (streq(c->parameter, "audit"))
a4705396 458 return use_audit();
d1bddcec 459 if (streq(c->parameter, "ima"))
a4705396 460 return use_ima();
ed440f6b
SL
461 if (streq(c->parameter, "tomoyo"))
462 return mac_tomoyo_use();
be405b90
LP
463 if (streq(c->parameter, "uefi-secureboot"))
464 return is_efi_secure_boot();
d1bddcec 465
a4705396 466 return false;
d1bddcec
LP
467}
468
469static int condition_test_capability(Condition *c) {
9c6f9786 470 unsigned long long capabilities = (unsigned long long) -1;
d1bddcec 471 _cleanup_fclose_ FILE *f = NULL;
9c6f9786 472 int value, r;
d1bddcec
LP
473
474 assert(c);
475 assert(c->parameter);
476 assert(c->type == CONDITION_CAPABILITY);
477
478 /* If it's an invalid capability, we don't have it */
2822da4f
LP
479 value = capability_from_name(c->parameter);
480 if (value < 0)
d1bddcec
LP
481 return -EINVAL;
482
483 /* If it's a valid capability we default to assume
484 * that we have it */
485
486 f = fopen("/proc/self/status", "re");
487 if (!f)
488 return -errno;
489
9c6f9786
LP
490 for (;;) {
491 _cleanup_free_ char *line = NULL;
492 const char *p;
493
494 r = read_line(f, LONG_LINE_MAX, &line);
495 if (r < 0)
496 return r;
497 if (r == 0)
498 break;
499
500 p = startswith(line, "CapBnd:");
501 if (p) {
502 if (sscanf(line+7, "%llx", &capabilities) != 1)
503 return -EIO;
d1bddcec 504
d1bddcec
LP
505 break;
506 }
507 }
508
a4705396 509 return !!(capabilities & (1ULL << value));
d1bddcec
LP
510}
511
512static int condition_test_needs_update(Condition *c) {
513 const char *p;
514 struct stat usr, other;
515
516 assert(c);
517 assert(c->parameter);
518 assert(c->type == CONDITION_NEEDS_UPDATE);
519
520 /* If the file system is read-only we shouldn't suggest an update */
521 if (path_is_read_only_fs(c->parameter) > 0)
a4705396 522 return false;
d1bddcec
LP
523
524 /* Any other failure means we should allow the condition to be true,
96d49011 525 * so that we rather invoke too many update tools than too
d1bddcec
LP
526 * few. */
527
528 if (!path_is_absolute(c->parameter))
a4705396 529 return true;
d1bddcec 530
63c372cb 531 p = strjoina(c->parameter, "/.updated");
d1bddcec 532 if (lstat(p, &other) < 0)
a4705396 533 return true;
d1bddcec
LP
534
535 if (lstat("/usr/", &usr) < 0)
a4705396 536 return true;
d1bddcec 537
fb8b0869
IS
538 /*
539 * First, compare seconds as they are always accurate...
540 */
541 if (usr.st_mtim.tv_sec != other.st_mtim.tv_sec)
542 return usr.st_mtim.tv_sec > other.st_mtim.tv_sec;
543
544 /*
545 * ...then compare nanoseconds.
546 *
547 * A false positive is only possible when /usr's nanoseconds > 0
548 * (otherwise /usr cannot be strictly newer than the target file)
549 * AND the target file's nanoseconds == 0
550 * (otherwise the filesystem supports nsec timestamps, see stat(2)).
551 */
552 if (usr.st_mtim.tv_nsec > 0 && other.st_mtim.tv_nsec == 0) {
553 _cleanup_free_ char *timestamp_str = NULL;
554 uint64_t timestamp;
555 int r;
556
13df9c39 557 r = parse_env_file(NULL, p, "TIMESTAMP_NSEC", &timestamp_str);
fb8b0869 558 if (r < 0) {
ec2ebfd5 559 log_error_errno(r, "Failed to parse timestamp file '%s', using mtime: %m", p);
fb8b0869
IS
560 return true;
561 } else if (r == 0) {
562 log_debug("No data in timestamp file '%s', using mtime", p);
563 return true;
564 }
565
566 r = safe_atou64(timestamp_str, &timestamp);
567 if (r < 0) {
ec2ebfd5 568 log_error_errno(r, "Failed to parse timestamp value '%s' in file '%s', using mtime: %m", timestamp_str, p);
fb8b0869
IS
569 return true;
570 }
571
ec2ebfd5 572 timespec_store(&other.st_mtim, timestamp);
fb8b0869
IS
573 }
574
575 return usr.st_mtim.tv_nsec > other.st_mtim.tv_nsec;
d1bddcec
LP
576}
577
578static int condition_test_first_boot(Condition *c) {
579 int r;
580
581 assert(c);
582 assert(c->parameter);
583 assert(c->type == CONDITION_FIRST_BOOT);
584
585 r = parse_boolean(c->parameter);
586 if (r < 0)
587 return r;
588
a4705396 589 return (access("/run/systemd/first-boot", F_OK) >= 0) == !!r;
d1bddcec
LP
590}
591
592static int condition_test_path_exists(Condition *c) {
593 assert(c);
594 assert(c->parameter);
595 assert(c->type == CONDITION_PATH_EXISTS);
596
a4705396 597 return access(c->parameter, F_OK) >= 0;
d1bddcec
LP
598}
599
600static int condition_test_path_exists_glob(Condition *c) {
601 assert(c);
602 assert(c->parameter);
603 assert(c->type == CONDITION_PATH_EXISTS_GLOB);
604
a4705396 605 return glob_exists(c->parameter) > 0;
d1bddcec
LP
606}
607
608static int condition_test_path_is_directory(Condition *c) {
609 assert(c);
610 assert(c->parameter);
611 assert(c->type == CONDITION_PATH_IS_DIRECTORY);
612
a4705396 613 return is_dir(c->parameter, true) > 0;
d1bddcec
LP
614}
615
616static int condition_test_path_is_symbolic_link(Condition *c) {
617 assert(c);
618 assert(c->parameter);
619 assert(c->type == CONDITION_PATH_IS_SYMBOLIC_LINK);
620
a4705396 621 return is_symlink(c->parameter) > 0;
d1bddcec
LP
622}
623
624static int condition_test_path_is_mount_point(Condition *c) {
625 assert(c);
626 assert(c->parameter);
627 assert(c->type == CONDITION_PATH_IS_MOUNT_POINT);
628
e1873695 629 return path_is_mount_point(c->parameter, NULL, AT_SYMLINK_FOLLOW) > 0;
d1bddcec
LP
630}
631
632static int condition_test_path_is_read_write(Condition *c) {
633 assert(c);
634 assert(c->parameter);
635 assert(c->type == CONDITION_PATH_IS_READ_WRITE);
636
a4705396 637 return path_is_read_only_fs(c->parameter) <= 0;
d1bddcec
LP
638}
639
640static int condition_test_directory_not_empty(Condition *c) {
641 int r;
642
643 assert(c);
644 assert(c->parameter);
645 assert(c->type == CONDITION_DIRECTORY_NOT_EMPTY);
646
647 r = dir_is_empty(c->parameter);
a4705396 648 return r <= 0 && r != -ENOENT;
d1bddcec
LP
649}
650
651static int condition_test_file_not_empty(Condition *c) {
652 struct stat st;
653
654 assert(c);
655 assert(c->parameter);
656 assert(c->type == CONDITION_FILE_NOT_EMPTY);
657
658 return (stat(c->parameter, &st) >= 0 &&
659 S_ISREG(st.st_mode) &&
a4705396 660 st.st_size > 0);
d1bddcec
LP
661}
662
663static int condition_test_file_is_executable(Condition *c) {
664 struct stat st;
665
666 assert(c);
667 assert(c->parameter);
668 assert(c->type == CONDITION_FILE_IS_EXECUTABLE);
669
670 return (stat(c->parameter, &st) >= 0 &&
671 S_ISREG(st.st_mode) &&
a4705396 672 (st.st_mode & 0111));
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673}
674
675static int condition_test_null(Condition *c) {
676 assert(c);
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677 assert(c->type == CONDITION_NULL);
678
679 /* Note that during parsing we already evaluate the string and
680 * store it in c->negate */
a4705396 681 return true;
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682}
683
684int condition_test(Condition *c) {
685
686 static int (*const condition_tests[_CONDITION_TYPE_MAX])(Condition *c) = {
687 [CONDITION_PATH_EXISTS] = condition_test_path_exists,
688 [CONDITION_PATH_EXISTS_GLOB] = condition_test_path_exists_glob,
689 [CONDITION_PATH_IS_DIRECTORY] = condition_test_path_is_directory,
690 [CONDITION_PATH_IS_SYMBOLIC_LINK] = condition_test_path_is_symbolic_link,
691 [CONDITION_PATH_IS_MOUNT_POINT] = condition_test_path_is_mount_point,
692 [CONDITION_PATH_IS_READ_WRITE] = condition_test_path_is_read_write,
693 [CONDITION_DIRECTORY_NOT_EMPTY] = condition_test_directory_not_empty,
694 [CONDITION_FILE_NOT_EMPTY] = condition_test_file_not_empty,
695 [CONDITION_FILE_IS_EXECUTABLE] = condition_test_file_is_executable,
696 [CONDITION_KERNEL_COMMAND_LINE] = condition_test_kernel_command_line,
5022f08a 697 [CONDITION_KERNEL_VERSION] = condition_test_kernel_version,
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698 [CONDITION_VIRTUALIZATION] = condition_test_virtualization,
699 [CONDITION_SECURITY] = condition_test_security,
700 [CONDITION_CAPABILITY] = condition_test_capability,
701 [CONDITION_HOST] = condition_test_host,
702 [CONDITION_AC_POWER] = condition_test_ac_power,
703 [CONDITION_ARCHITECTURE] = condition_test_architecture,
704 [CONDITION_NEEDS_UPDATE] = condition_test_needs_update,
705 [CONDITION_FIRST_BOOT] = condition_test_first_boot,
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706 [CONDITION_USER] = condition_test_user,
707 [CONDITION_GROUP] = condition_test_group,
e16647c3 708 [CONDITION_CONTROL_GROUP_CONTROLLER] = condition_test_control_group_controller,
d1bddcec 709 [CONDITION_NULL] = condition_test_null,
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710 [CONDITION_CPUS] = condition_test_cpus,
711 [CONDITION_MEMORY] = condition_test_memory,
d1bddcec 712 };
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713
714 int r, b;
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715
716 assert(c);
717 assert(c->type >= 0);
718 assert(c->type < _CONDITION_TYPE_MAX);
719
a4705396 720 r = condition_tests[c->type](c);
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721 if (r < 0) {
722 c->result = CONDITION_ERROR;
a4705396 723 return r;
cc50ef13 724 }
a4705396 725
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726 b = (r > 0) == !c->negate;
727 c->result = b ? CONDITION_SUCCEEDED : CONDITION_FAILED;
728 return b;
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729}
730
828fa610
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731bool condition_test_list(Condition *first, const char *(*to_string)(ConditionType t), condition_test_logger_t logger, void *userdata) {
732 Condition *c;
733 int triggered = -1;
734
735 assert(!!logger == !!to_string);
736
737 /* If the condition list is empty, then it is true */
738 if (!first)
739 return true;
740
741 /* Otherwise, if all of the non-trigger conditions apply and
742 * if any of the trigger conditions apply (unless there are
743 * none) we return true */
744 LIST_FOREACH(conditions, c, first) {
745 int r;
746
747 r = condition_test(c);
748
749 if (logger) {
750 if (r < 0)
751 logger(userdata, LOG_WARNING, r, __FILE__, __LINE__, __func__,
752 "Couldn't determine result for %s=%s%s%s, assuming failed: %m",
753 to_string(c->type),
754 c->trigger ? "|" : "",
755 c->negate ? "!" : "",
756 c->parameter);
757 else
758 logger(userdata, LOG_DEBUG, 0, __FILE__, __LINE__, __func__,
759 "%s=%s%s%s %s.",
760 to_string(c->type),
761 c->trigger ? "|" : "",
762 c->negate ? "!" : "",
763 c->parameter,
764 condition_result_to_string(c->result));
765 }
766
767 if (!c->trigger && r <= 0)
768 return false;
769
770 if (c->trigger && triggered <= 0)
771 triggered = r > 0;
772 }
773
774 return triggered != 0;
775}
776
59fccdc5 777void condition_dump(Condition *c, FILE *f, const char *prefix, const char *(*to_string)(ConditionType t)) {
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778 assert(c);
779 assert(f);
780
ad5d4b17 781 prefix = strempty(prefix);
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782
783 fprintf(f,
784 "%s\t%s: %s%s%s %s\n",
785 prefix,
59fccdc5 786 to_string(c->type),
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TG
787 c->trigger ? "|" : "",
788 c->negate ? "!" : "",
789 c->parameter,
cc50ef13 790 condition_result_to_string(c->result));
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791}
792
59fccdc5 793void condition_dump_list(Condition *first, FILE *f, const char *prefix, const char *(*to_string)(ConditionType t)) {
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794 Condition *c;
795
796 LIST_FOREACH(conditions, c, first)
59fccdc5 797 condition_dump(c, f, prefix, to_string);
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TG
798}
799
800static const char* const condition_type_table[_CONDITION_TYPE_MAX] = {
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801 [CONDITION_ARCHITECTURE] = "ConditionArchitecture",
802 [CONDITION_VIRTUALIZATION] = "ConditionVirtualization",
803 [CONDITION_HOST] = "ConditionHost",
804 [CONDITION_KERNEL_COMMAND_LINE] = "ConditionKernelCommandLine",
5022f08a 805 [CONDITION_KERNEL_VERSION] = "ConditionKernelVersion",
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LP
806 [CONDITION_SECURITY] = "ConditionSecurity",
807 [CONDITION_CAPABILITY] = "ConditionCapability",
808 [CONDITION_AC_POWER] = "ConditionACPower",
809 [CONDITION_NEEDS_UPDATE] = "ConditionNeedsUpdate",
810 [CONDITION_FIRST_BOOT] = "ConditionFirstBoot",
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811 [CONDITION_PATH_EXISTS] = "ConditionPathExists",
812 [CONDITION_PATH_EXISTS_GLOB] = "ConditionPathExistsGlob",
813 [CONDITION_PATH_IS_DIRECTORY] = "ConditionPathIsDirectory",
814 [CONDITION_PATH_IS_SYMBOLIC_LINK] = "ConditionPathIsSymbolicLink",
815 [CONDITION_PATH_IS_MOUNT_POINT] = "ConditionPathIsMountPoint",
816 [CONDITION_PATH_IS_READ_WRITE] = "ConditionPathIsReadWrite",
817 [CONDITION_DIRECTORY_NOT_EMPTY] = "ConditionDirectoryNotEmpty",
818 [CONDITION_FILE_NOT_EMPTY] = "ConditionFileNotEmpty",
819 [CONDITION_FILE_IS_EXECUTABLE] = "ConditionFileIsExecutable",
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FS
820 [CONDITION_USER] = "ConditionUser",
821 [CONDITION_GROUP] = "ConditionGroup",
e16647c3 822 [CONDITION_CONTROL_GROUP_CONTROLLER] = "ConditionControlGroupController",
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LP
823 [CONDITION_NULL] = "ConditionNull",
824 [CONDITION_CPUS] = "ConditionCPUs",
825 [CONDITION_MEMORY] = "ConditionMemory",
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TG
826};
827
828DEFINE_STRING_TABLE_LOOKUP(condition_type, ConditionType);
cc50ef13 829
59fccdc5 830static const char* const assert_type_table[_CONDITION_TYPE_MAX] = {
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LP
831 [CONDITION_ARCHITECTURE] = "AssertArchitecture",
832 [CONDITION_VIRTUALIZATION] = "AssertVirtualization",
833 [CONDITION_HOST] = "AssertHost",
834 [CONDITION_KERNEL_COMMAND_LINE] = "AssertKernelCommandLine",
5022f08a 835 [CONDITION_KERNEL_VERSION] = "AssertKernelVersion",
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LP
836 [CONDITION_SECURITY] = "AssertSecurity",
837 [CONDITION_CAPABILITY] = "AssertCapability",
838 [CONDITION_AC_POWER] = "AssertACPower",
839 [CONDITION_NEEDS_UPDATE] = "AssertNeedsUpdate",
840 [CONDITION_FIRST_BOOT] = "AssertFirstBoot",
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LP
841 [CONDITION_PATH_EXISTS] = "AssertPathExists",
842 [CONDITION_PATH_EXISTS_GLOB] = "AssertPathExistsGlob",
843 [CONDITION_PATH_IS_DIRECTORY] = "AssertPathIsDirectory",
844 [CONDITION_PATH_IS_SYMBOLIC_LINK] = "AssertPathIsSymbolicLink",
845 [CONDITION_PATH_IS_MOUNT_POINT] = "AssertPathIsMountPoint",
846 [CONDITION_PATH_IS_READ_WRITE] = "AssertPathIsReadWrite",
847 [CONDITION_DIRECTORY_NOT_EMPTY] = "AssertDirectoryNotEmpty",
848 [CONDITION_FILE_NOT_EMPTY] = "AssertFileNotEmpty",
849 [CONDITION_FILE_IS_EXECUTABLE] = "AssertFileIsExecutable",
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FS
850 [CONDITION_USER] = "AssertUser",
851 [CONDITION_GROUP] = "AssertGroup",
e16647c3 852 [CONDITION_CONTROL_GROUP_CONTROLLER] = "AssertControlGroupController",
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LP
853 [CONDITION_NULL] = "AssertNull",
854 [CONDITION_CPUS] = "AssertCPUs",
855 [CONDITION_MEMORY] = "AssertMemory",
59fccdc5
LP
856};
857
858DEFINE_STRING_TABLE_LOOKUP(assert_type, ConditionType);
859
cc50ef13
LP
860static const char* const condition_result_table[_CONDITION_RESULT_MAX] = {
861 [CONDITION_UNTESTED] = "untested",
862 [CONDITION_SUCCEEDED] = "succeeded",
863 [CONDITION_FAILED] = "failed",
864 [CONDITION_ERROR] = "error",
865};
866
867DEFINE_STRING_TABLE_LOOKUP(condition_result, ConditionResult);