src/test/test-fs-util.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <unistd.h>
   4
   5 #include "alloc-util.h"
   6 #include "chase-symlinks.h"
   7 #include "copy.h"
   8 #include "fd-util.h"
   9 #include "fileio.h"
  10 #include "fs-util.h"
  11 #include "id128-util.h"
  12 #include "macro.h"
  13 #include "mkdir.h"
  14 #include "path-util.h"
  15 #include "random-util.h"
  16 #include "rm-rf.h"
  17 #include "stdio-util.h"
  18 #include "string-util.h"
  19 #include "strv.h"
  20 #include "sync-util.h"
  21 #include "tests.h"
  22 #include "tmpfile-util.h"
  23 #include "umask-util.h"
  24 #include "user-util.h"
  25 #include "virt.h"
  26
  27 static const char *arg_test_dir = NULL;
  28
  29 TEST(chase_symlinks) {
  30         _cleanup_free_ char *result = NULL, *pwd = NULL;
  31         _cleanup_close_ int pfd = -1;
  32         char *temp;
  33         const char *top, *p, *pslash, *q, *qslash;
  34         struct stat st;
  35         int r;
  36
  37         temp = strjoina(arg_test_dir ?: "/tmp", "/test-chase.XXXXXX");
  38         assert_se(mkdtemp(temp));
  39
  40         top = strjoina(temp, "/top");
  41         assert_se(mkdir(top, 0700) >= 0);
  42
  43         p = strjoina(top, "/dot");
  44         if (symlink(".", p) < 0) {
  45                 assert_se(IN_SET(errno, EINVAL, ENOSYS, ENOTTY, EPERM));
  46                 log_tests_skipped_errno(errno, "symlink() not possible");
  47                 goto cleanup;
  48         };
  49
  50         p = strjoina(top, "/dotdot");
  51         assert_se(symlink("..", p) >= 0);
  52
  53         p = strjoina(top, "/dotdota");
  54         assert_se(symlink("../a", p) >= 0);
  55
  56         p = strjoina(temp, "/a");
  57         assert_se(symlink("b", p) >= 0);
  58
  59         p = strjoina(temp, "/b");
  60         assert_se(symlink("/usr", p) >= 0);
  61
  62         p = strjoina(temp, "/start");
  63         assert_se(symlink("top/dot/dotdota", p) >= 0);
  64
  65         /* Paths that use symlinks underneath the "root" */
  66
  67         r = chase_symlinks(p, NULL, 0, &result, NULL);
  68         assert_se(r > 0);
  69         assert_se(path_equal(result, "/usr"));
  70         result = mfree(result);
  71
  72         pslash = strjoina(p, "/");
  73         r = chase_symlinks(pslash, NULL, 0, &result, NULL);
  74         assert_se(r > 0);
  75         assert_se(path_equal(result, "/usr/"));
  76         result = mfree(result);
  77
  78         r = chase_symlinks(p, temp, 0, &result, NULL);
  79         assert_se(r == -ENOENT);
  80
  81         r = chase_symlinks(pslash, temp, 0, &result, NULL);
  82         assert_se(r == -ENOENT);
  83
  84         q = strjoina(temp, "/usr");
  85
  86         r = chase_symlinks(p, temp, CHASE_NONEXISTENT, &result, NULL);
  87         assert_se(r == 0);
  88         assert_se(path_equal(result, q));
  89         result = mfree(result);
  90
  91         qslash = strjoina(q, "/");
  92
  93         r = chase_symlinks(pslash, temp, CHASE_NONEXISTENT, &result, NULL);
  94         assert_se(r == 0);
  95         assert_se(path_equal(result, qslash));
  96         result = mfree(result);
  97
  98         assert_se(mkdir(q, 0700) >= 0);
  99
 100         r = chase_symlinks(p, temp, 0, &result, NULL);
 101         assert_se(r > 0);
 102         assert_se(path_equal(result, q));
 103         result = mfree(result);
 104
 105         r = chase_symlinks(pslash, temp, 0, &result, NULL);
 106         assert_se(r > 0);
 107         assert_se(path_equal(result, qslash));
 108         result = mfree(result);
 109
 110         p = strjoina(temp, "/slash");
 111         assert_se(symlink("/", p) >= 0);
 112
 113         r = chase_symlinks(p, NULL, 0, &result, NULL);
 114         assert_se(r > 0);
 115         assert_se(path_equal(result, "/"));
 116         result = mfree(result);
 117
 118         r = chase_symlinks(p, temp, 0, &result, NULL);
 119         assert_se(r > 0);
 120         assert_se(path_equal(result, temp));
 121         result = mfree(result);
 122
 123         /* Paths that would "escape" outside of the "root" */
 124
 125         p = strjoina(temp, "/6dots");
 126         assert_se(symlink("../../..", p) >= 0);
 127
 128         r = chase_symlinks(p, temp, 0, &result, NULL);
 129         assert_se(r > 0 && path_equal(result, temp));
 130         result = mfree(result);
 131
 132         p = strjoina(temp, "/6dotsusr");
 133         assert_se(symlink("../../../usr", p) >= 0);
 134
 135         r = chase_symlinks(p, temp, 0, &result, NULL);
 136         assert_se(r > 0 && path_equal(result, q));
 137         result = mfree(result);
 138
 139         p = strjoina(temp, "/top/8dotsusr");
 140         assert_se(symlink("../../../../usr", p) >= 0);
 141
 142         r = chase_symlinks(p, temp, 0, &result, NULL);
 143         assert_se(r > 0 && path_equal(result, q));
 144         result = mfree(result);
 145
 146         /* Paths that contain repeated slashes */
 147
 148         p = strjoina(temp, "/slashslash");
 149         assert_se(symlink("///usr///", p) >= 0);
 150
 151         r = chase_symlinks(p, NULL, 0, &result, NULL);
 152         assert_se(r > 0);
 153         assert_se(path_equal(result, "/usr"));
 154         assert_se(streq(result, "/usr")); /* we guarantee that we drop redundant slashes */
 155         result = mfree(result);
 156
 157         r = chase_symlinks(p, temp, 0, &result, NULL);
 158         assert_se(r > 0);
 159         assert_se(path_equal(result, q));
 160         result = mfree(result);
 161
 162         /* Paths underneath the "root" with different UIDs while using CHASE_SAFE */
 163
 164         if (geteuid() == 0) {
 165                 p = strjoina(temp, "/user");
 166                 assert_se(mkdir(p, 0755) >= 0);
 167                 assert_se(chown(p, UID_NOBODY, GID_NOBODY) >= 0);
 168
 169                 q = strjoina(temp, "/user/root");
 170                 assert_se(mkdir(q, 0755) >= 0);
 171
 172                 p = strjoina(q, "/link");
 173                 assert_se(symlink("/", p) >= 0);
 174
 175                 /* Fail when user-owned directories contain root-owned subdirectories. */
 176                 r = chase_symlinks(p, temp, CHASE_SAFE, &result, NULL);
 177                 assert_se(r == -ENOLINK);
 178                 result = mfree(result);
 179
 180                 /* Allow this when the user-owned directories are all in the "root". */
 181                 r = chase_symlinks(p, q, CHASE_SAFE, &result, NULL);
 182                 assert_se(r > 0);
 183                 result = mfree(result);
 184         }
 185
 186         /* Paths using . */
 187
 188         r = chase_symlinks("/etc/./.././", NULL, 0, &result, NULL);
 189         assert_se(r > 0);
 190         assert_se(path_equal(result, "/"));
 191         result = mfree(result);
 192
 193         r = chase_symlinks("/etc/./.././", "/etc", 0, &result, NULL);
 194         assert_se(r > 0 && path_equal(result, "/etc"));
 195         result = mfree(result);
 196
 197         r = chase_symlinks("/../.././//../../etc", NULL, 0, &result, NULL);
 198         assert_se(r > 0);
 199         assert_se(streq(result, "/etc"));
 200         result = mfree(result);
 201
 202         r = chase_symlinks("/../.././//../../test-chase.fsldajfl", NULL, CHASE_NONEXISTENT, &result, NULL);
 203         assert_se(r == 0);
 204         assert_se(streq(result, "/test-chase.fsldajfl"));
 205         result = mfree(result);
 206
 207         r = chase_symlinks("/../.././//../../etc", "/", CHASE_PREFIX_ROOT, &result, NULL);
 208         assert_se(r > 0);
 209         assert_se(streq(result, "/etc"));
 210         result = mfree(result);
 211
 212         r = chase_symlinks("/../.././//../../test-chase.fsldajfl", "/", CHASE_PREFIX_ROOT|CHASE_NONEXISTENT, &result, NULL);
 213         assert_se(r == 0);
 214         assert_se(streq(result, "/test-chase.fsldajfl"));
 215         result = mfree(result);
 216
 217         r = chase_symlinks("/etc/machine-id/foo", NULL, 0, &result, NULL);
 218         assert_se(IN_SET(r, -ENOTDIR, -ENOENT));
 219         result = mfree(result);
 220
 221         /* Path that loops back to self */
 222
 223         p = strjoina(temp, "/recursive-symlink");
 224         assert_se(symlink("recursive-symlink", p) >= 0);
 225         r = chase_symlinks(p, NULL, 0, &result, NULL);
 226         assert_se(r == -ELOOP);
 227
 228         /* Path which doesn't exist */
 229
 230         p = strjoina(temp, "/idontexist");
 231         r = chase_symlinks(p, NULL, 0, &result, NULL);
 232         assert_se(r == -ENOENT);
 233
 234         r = chase_symlinks(p, NULL, CHASE_NONEXISTENT, &result, NULL);
 235         assert_se(r == 0);
 236         assert_se(path_equal(result, p));
 237         result = mfree(result);
 238
 239         p = strjoina(temp, "/idontexist/meneither");
 240         r = chase_symlinks(p, NULL, 0, &result, NULL);
 241         assert_se(r == -ENOENT);
 242
 243         r = chase_symlinks(p, NULL, CHASE_NONEXISTENT, &result, NULL);
 244         assert_se(r == 0);
 245         assert_se(path_equal(result, p));
 246         result = mfree(result);
 247
 248         /* Relative paths */
 249
 250         assert_se(safe_getcwd(&pwd) >= 0);
 251
 252         assert_se(chdir(temp) >= 0);
 253
 254         p = "this/is/a/relative/path";
 255         r = chase_symlinks(p, NULL, CHASE_NONEXISTENT, &result, NULL);
 256         assert_se(r == 0);
 257
 258         p = strjoina(temp, "/", p);
 259         assert_se(path_equal(result, p));
 260         result = mfree(result);
 261
 262         p = "this/is/a/relative/path";
 263         r = chase_symlinks(p, temp, CHASE_NONEXISTENT, &result, NULL);
 264         assert_se(r == 0);
 265
 266         p = strjoina(temp, "/", p);
 267         assert_se(path_equal(result, p));
 268         result = mfree(result);
 269
 270         assert_se(chdir(pwd) >= 0);
 271
 272         /* Path which doesn't exist, but contains weird stuff */
 273
 274         p = strjoina(temp, "/idontexist/..");
 275         r = chase_symlinks(p, NULL, 0, &result, NULL);
 276         assert_se(r == -ENOENT);
 277
 278         r = chase_symlinks(p, NULL, CHASE_NONEXISTENT, &result, NULL);
 279         assert_se(r == -ENOENT);
 280
 281         p = strjoina(temp, "/target");
 282         q = strjoina(temp, "/top");
 283         assert_se(symlink(q, p) >= 0);
 284         p = strjoina(temp, "/target/idontexist");
 285         r = chase_symlinks(p, NULL, 0, &result, NULL);
 286         assert_se(r == -ENOENT);
 287
 288         if (geteuid() == 0) {
 289                 p = strjoina(temp, "/priv1");
 290                 assert_se(mkdir(p, 0755) >= 0);
 291
 292                 q = strjoina(p, "/priv2");
 293                 assert_se(mkdir(q, 0755) >= 0);
 294
 295                 assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL, NULL) >= 0);
 296
 297                 assert_se(chown(q, UID_NOBODY, GID_NOBODY) >= 0);
 298                 assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL, NULL) >= 0);
 299
 300                 assert_se(chown(p, UID_NOBODY, GID_NOBODY) >= 0);
 301                 assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL, NULL) >= 0);
 302
 303                 assert_se(chown(q, 0, 0) >= 0);
 304                 assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL, NULL) == -ENOLINK);
 305
 306                 assert_se(rmdir(q) >= 0);
 307                 assert_se(symlink("/etc/passwd", q) >= 0);
 308                 assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL, NULL) == -ENOLINK);
 309
 310                 assert_se(chown(p, 0, 0) >= 0);
 311                 assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL, NULL) >= 0);
 312         }
 313
 314         p = strjoina(temp, "/machine-id-test");
 315         assert_se(symlink("/usr/../etc/./machine-id", p) >= 0);
 316
 317         r = chase_symlinks(p, NULL, 0, NULL, &pfd);
 318         if (r != -ENOENT && sd_id128_get_machine(NULL) >= 0) {
 319                 _cleanup_close_ int fd = -1;
 320                 sd_id128_t a, b;
 321
 322                 assert_se(pfd >= 0);
 323
 324                 fd = fd_reopen(pfd, O_RDONLY|O_CLOEXEC);
 325                 assert_se(fd >= 0);
 326                 safe_close(pfd);
 327
 328                 assert_se(id128_read_fd(fd, ID128_FORMAT_PLAIN, &a) >= 0);
 329                 assert_se(sd_id128_get_machine(&b) >= 0);
 330                 assert_se(sd_id128_equal(a, b));
 331         }
 332
 333         /* Test CHASE_NOFOLLOW */
 334
 335         p = strjoina(temp, "/target");
 336         q = strjoina(temp, "/symlink");
 337         assert_se(symlink(p, q) >= 0);
 338         r = chase_symlinks(q, NULL, CHASE_NOFOLLOW, &result, &pfd);
 339         assert_se(r >= 0);
 340         assert_se(pfd >= 0);
 341         assert_se(path_equal(result, q));
 342         assert_se(fstat(pfd, &st) >= 0);
 343         assert_se(S_ISLNK(st.st_mode));
 344         result = mfree(result);
 345         pfd = safe_close(pfd);
 346
 347         /* s1 -> s2 -> nonexistent */
 348         q = strjoina(temp, "/s1");
 349         assert_se(symlink("s2", q) >= 0);
 350         p = strjoina(temp, "/s2");
 351         assert_se(symlink("nonexistent", p) >= 0);
 352         r = chase_symlinks(q, NULL, CHASE_NOFOLLOW, &result, &pfd);
 353         assert_se(r >= 0);
 354         assert_se(pfd >= 0);
 355         assert_se(path_equal(result, q));
 356         assert_se(fstat(pfd, &st) >= 0);
 357         assert_se(S_ISLNK(st.st_mode));
 358         result = mfree(result);
 359         pfd = safe_close(pfd);
 360
 361         /* Test CHASE_STEP */
 362
 363         p = strjoina(temp, "/start");
 364         r = chase_symlinks(p, NULL, CHASE_STEP, &result, NULL);
 365         assert_se(r == 0);
 366         p = strjoina(temp, "/top/dot/dotdota");
 367         assert_se(streq(p, result));
 368         result = mfree(result);
 369
 370         r = chase_symlinks(p, NULL, CHASE_STEP, &result, NULL);
 371         assert_se(r == 0);
 372         p = strjoina(temp, "/top/dotdota");
 373         assert_se(streq(p, result));
 374         result = mfree(result);
 375
 376         r = chase_symlinks(p, NULL, CHASE_STEP, &result, NULL);
 377         assert_se(r == 0);
 378         p = strjoina(temp, "/top/../a");
 379         assert_se(streq(p, result));
 380         result = mfree(result);
 381
 382         r = chase_symlinks(p, NULL, CHASE_STEP, &result, NULL);
 383         assert_se(r == 0);
 384         p = strjoina(temp, "/a");
 385         assert_se(streq(p, result));
 386         result = mfree(result);
 387
 388         r = chase_symlinks(p, NULL, CHASE_STEP, &result, NULL);
 389         assert_se(r == 0);
 390         p = strjoina(temp, "/b");
 391         assert_se(streq(p, result));
 392         result = mfree(result);
 393
 394         r = chase_symlinks(p, NULL, CHASE_STEP, &result, NULL);
 395         assert_se(r == 0);
 396         assert_se(streq("/usr", result));
 397         result = mfree(result);
 398
 399         r = chase_symlinks("/usr", NULL, CHASE_STEP, &result, NULL);
 400         assert_se(r > 0);
 401         assert_se(streq("/usr", result));
 402         result = mfree(result);
 403
 404         /* Make sure that symlinks in the "root" path are not resolved, but those below are */
 405         p = strjoina("/etc/..", temp, "/self");
 406         assert_se(symlink(".", p) >= 0);
 407         q = strjoina(p, "/top/dot/dotdota");
 408         r = chase_symlinks(q, p, 0, &result, NULL);
 409         assert_se(r > 0);
 410         assert_se(path_equal(path_startswith(result, p), "usr"));
 411         result = mfree(result);
 412
 413         /* Test CHASE_PROHIBIT_SYMLINKS */
 414
 415         assert_se(chase_symlinks("top/dot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS, NULL, NULL) == -EREMCHG);
 416         assert_se(chase_symlinks("top/dot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS|CHASE_WARN, NULL, NULL) == -EREMCHG);
 417         assert_se(chase_symlinks("top/dotdot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS, NULL, NULL) == -EREMCHG);
 418         assert_se(chase_symlinks("top/dotdot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS|CHASE_WARN, NULL, NULL) == -EREMCHG);
 419         assert_se(chase_symlinks("top/dot/dot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS, NULL, NULL) == -EREMCHG);
 420         assert_se(chase_symlinks("top/dot/dot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS|CHASE_WARN, NULL, NULL) == -EREMCHG);
 421
 422  cleanup:
 423         assert_se(rm_rf(temp, REMOVE_ROOT|REMOVE_PHYSICAL) >= 0);
 424 }
 425
 426 TEST(unlink_noerrno) {
 427         char *name;
 428         int fd;
 429
 430         name = strjoina(arg_test_dir ?: "/tmp", "/test-close_nointr.XXXXXX");
 431         fd = mkostemp_safe(name);
 432         assert_se(fd >= 0);
 433         assert_se(close_nointr(fd) >= 0);
 434
 435         {
 436                 PROTECT_ERRNO;
 437                 errno = 42;
 438                 assert_se(unlink_noerrno(name) >= 0);
 439                 assert_se(errno == 42);
 440                 assert_se(unlink_noerrno(name) < 0);
 441                 assert_se(errno == 42);
 442         }
 443 }
 444
 445 TEST(readlink_and_make_absolute) {
 446         const char *tempdir, *name, *name2, *name_alias;
 447         _cleanup_free_ char *r1 = NULL, *r2 = NULL, *pwd = NULL;
 448
 449         tempdir = strjoina(arg_test_dir ?: "/tmp", "/test-readlink_and_make_absolute");
 450         name = strjoina(tempdir, "/original");
 451         name2 = "test-readlink_and_make_absolute/original";
 452         name_alias = strjoina(arg_test_dir ?: "/tmp", "/test-readlink_and_make_absolute-alias");
 453
 454         assert_se(mkdir_safe(tempdir, 0755, getuid(), getgid(), MKDIR_WARN_MODE) >= 0);
 455         assert_se(touch(name) >= 0);
 456
 457         if (symlink(name, name_alias) < 0) {
 458                 assert_se(IN_SET(errno, EINVAL, ENOSYS, ENOTTY, EPERM));
 459                 log_tests_skipped_errno(errno, "symlink() not possible");
 460         } else {
 461                 assert_se(readlink_and_make_absolute(name_alias, &r1) >= 0);
 462                 assert_se(streq(r1, name));
 463                 assert_se(unlink(name_alias) >= 0);
 464
 465                 assert_se(safe_getcwd(&pwd) >= 0);
 466
 467                 assert_se(chdir(tempdir) >= 0);
 468                 assert_se(symlink(name2, name_alias) >= 0);
 469                 assert_se(readlink_and_make_absolute(name_alias, &r2) >= 0);
 470                 assert_se(streq(r2, name));
 471                 assert_se(unlink(name_alias) >= 0);
 472
 473                 assert_se(chdir(pwd) >= 0);
 474         }
 475
 476         assert_se(rm_rf(tempdir, REMOVE_ROOT|REMOVE_PHYSICAL) >= 0);
 477 }
 478
 479 TEST(get_files_in_directory) {
 480         _cleanup_strv_free_ char **l = NULL, **t = NULL;
 481
 482         assert_se(get_files_in_directory(arg_test_dir ?: "/tmp", &l) >= 0);
 483         assert_se(get_files_in_directory(".", &t) >= 0);
 484         assert_se(get_files_in_directory(".", NULL) >= 0);
 485 }
 486
 487 TEST(var_tmp) {
 488         _cleanup_free_ char *tmpdir_backup = NULL, *temp_backup = NULL, *tmp_backup = NULL;
 489         const char *tmp_dir = NULL, *t;
 490
 491         t = getenv("TMPDIR");
 492         if (t) {
 493                 tmpdir_backup = strdup(t);
 494                 assert_se(tmpdir_backup);
 495         }
 496
 497         t = getenv("TEMP");
 498         if (t) {
 499                 temp_backup = strdup(t);
 500                 assert_se(temp_backup);
 501         }
 502
 503         t = getenv("TMP");
 504         if (t) {
 505                 tmp_backup = strdup(t);
 506                 assert_se(tmp_backup);
 507         }
 508
 509         assert_se(unsetenv("TMPDIR") >= 0);
 510         assert_se(unsetenv("TEMP") >= 0);
 511         assert_se(unsetenv("TMP") >= 0);
 512
 513         assert_se(var_tmp_dir(&tmp_dir) >= 0);
 514         assert_se(streq(tmp_dir, "/var/tmp"));
 515
 516         assert_se(setenv("TMPDIR", "/tmp", true) >= 0);
 517         assert_se(streq(getenv("TMPDIR"), "/tmp"));
 518
 519         assert_se(var_tmp_dir(&tmp_dir) >= 0);
 520         assert_se(streq(tmp_dir, "/tmp"));
 521
 522         assert_se(setenv("TMPDIR", "/88_does_not_exist_88", true) >= 0);
 523         assert_se(streq(getenv("TMPDIR"), "/88_does_not_exist_88"));
 524
 525         assert_se(var_tmp_dir(&tmp_dir) >= 0);
 526         assert_se(streq(tmp_dir, "/var/tmp"));
 527
 528         if (tmpdir_backup)  {
 529                 assert_se(setenv("TMPDIR", tmpdir_backup, true) >= 0);
 530                 assert_se(streq(getenv("TMPDIR"), tmpdir_backup));
 531         }
 532
 533         if (temp_backup)  {
 534                 assert_se(setenv("TEMP", temp_backup, true) >= 0);
 535                 assert_se(streq(getenv("TEMP"), temp_backup));
 536         }
 537
 538         if (tmp_backup)  {
 539                 assert_se(setenv("TMP", tmp_backup, true) >= 0);
 540                 assert_se(streq(getenv("TMP"), tmp_backup));
 541         }
 542 }
 543
 544 TEST(dot_or_dot_dot) {
 545         assert_se(!dot_or_dot_dot(NULL));
 546         assert_se(!dot_or_dot_dot(""));
 547         assert_se(!dot_or_dot_dot("xxx"));
 548         assert_se(dot_or_dot_dot("."));
 549         assert_se(dot_or_dot_dot(".."));
 550         assert_se(!dot_or_dot_dot(".foo"));
 551         assert_se(!dot_or_dot_dot("..foo"));
 552 }
 553
 554 TEST(access_fd) {
 555         _cleanup_(rmdir_and_freep) char *p = NULL;
 556         _cleanup_close_ int fd = -1;
 557         const char *a;
 558
 559         a = strjoina(arg_test_dir ?: "/tmp", "/access-fd.XXXXXX");
 560         assert_se(mkdtemp_malloc(a, &p) >= 0);
 561
 562         fd = open(p, O_RDONLY|O_DIRECTORY|O_CLOEXEC);
 563         assert_se(fd >= 0);
 564
 565         assert_se(access_fd(fd, R_OK) >= 0);
 566         assert_se(access_fd(fd, F_OK) >= 0);
 567         assert_se(access_fd(fd, W_OK) >= 0);
 568
 569         assert_se(fchmod(fd, 0000) >= 0);
 570
 571         assert_se(access_fd(fd, F_OK) >= 0);
 572
 573         if (geteuid() == 0) {
 574                 assert_se(access_fd(fd, R_OK) >= 0);
 575                 assert_se(access_fd(fd, W_OK) >= 0);
 576         } else {
 577                 assert_se(access_fd(fd, R_OK) == -EACCES);
 578                 assert_se(access_fd(fd, W_OK) == -EACCES);
 579         }
 580 }
 581
 582 TEST(touch_file) {
 583         uid_t test_uid, test_gid;
 584         _cleanup_(rm_rf_physical_and_freep) char *p = NULL;
 585         struct stat st;
 586         const char *a;
 587         usec_t test_mtime;
 588         int r;
 589
 590         test_uid = geteuid() == 0 ? 65534 : getuid();
 591         test_gid = geteuid() == 0 ? 65534 : getgid();
 592
 593         test_mtime = usec_sub_unsigned(now(CLOCK_REALTIME), USEC_PER_WEEK);
 594
 595         a = strjoina(arg_test_dir ?: "/dev/shm", "/touch-file-XXXXXX");
 596         assert_se(mkdtemp_malloc(a, &p) >= 0);
 597
 598         a = strjoina(p, "/regular");
 599         r = touch_file(a, false, test_mtime, test_uid, test_gid, 0640);
 600         if (r < 0) {
 601                 assert_se(IN_SET(r, -EINVAL, -ENOSYS, -ENOTTY, -EPERM));
 602                 log_tests_skipped_errno(errno, "touch_file() not possible");
 603                 return;
 604         }
 605
 606         assert_se(lstat(a, &st) >= 0);
 607         assert_se(st.st_uid == test_uid);
 608         assert_se(st.st_gid == test_gid);
 609         assert_se(S_ISREG(st.st_mode));
 610         assert_se((st.st_mode & 0777) == 0640);
 611         assert_se(timespec_load(&st.st_mtim) == test_mtime);
 612
 613         a = strjoina(p, "/dir");
 614         assert_se(mkdir(a, 0775) >= 0);
 615         assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0);
 616         assert_se(lstat(a, &st) >= 0);
 617         assert_se(st.st_uid == test_uid);
 618         assert_se(st.st_gid == test_gid);
 619         assert_se(S_ISDIR(st.st_mode));
 620         assert_se((st.st_mode & 0777) == 0640);
 621         assert_se(timespec_load(&st.st_mtim) == test_mtime);
 622
 623         a = strjoina(p, "/fifo");
 624         assert_se(mkfifo(a, 0775) >= 0);
 625         assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0);
 626         assert_se(lstat(a, &st) >= 0);
 627         assert_se(st.st_uid == test_uid);
 628         assert_se(st.st_gid == test_gid);
 629         assert_se(S_ISFIFO(st.st_mode));
 630         assert_se((st.st_mode & 0777) == 0640);
 631         assert_se(timespec_load(&st.st_mtim) == test_mtime);
 632
 633         a = strjoina(p, "/sock");
 634         assert_se(mknod(a, 0775 | S_IFSOCK, 0) >= 0);
 635         assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0);
 636         assert_se(lstat(a, &st) >= 0);
 637         assert_se(st.st_uid == test_uid);
 638         assert_se(st.st_gid == test_gid);
 639         assert_se(S_ISSOCK(st.st_mode));
 640         assert_se((st.st_mode & 0777) == 0640);
 641         assert_se(timespec_load(&st.st_mtim) == test_mtime);
 642
 643         if (geteuid() == 0) {
 644                 a = strjoina(p, "/bdev");
 645                 r = mknod(a, 0775 | S_IFBLK, makedev(0, 0));
 646                 if (r < 0 && errno == EPERM && detect_container() > 0) {
 647                         log_notice("Running in unprivileged container? Skipping remaining tests in %s", __func__);
 648                         return;
 649                 }
 650                 assert_se(r >= 0);
 651                 assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0);
 652                 assert_se(lstat(a, &st) >= 0);
 653                 assert_se(st.st_uid == test_uid);
 654                 assert_se(st.st_gid == test_gid);
 655                 assert_se(S_ISBLK(st.st_mode));
 656                 assert_se((st.st_mode & 0777) == 0640);
 657                 assert_se(timespec_load(&st.st_mtim) == test_mtime);
 658
 659                 a = strjoina(p, "/cdev");
 660                 assert_se(mknod(a, 0775 | S_IFCHR, makedev(0, 0)) >= 0);
 661                 assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0);
 662                 assert_se(lstat(a, &st) >= 0);
 663                 assert_se(st.st_uid == test_uid);
 664                 assert_se(st.st_gid == test_gid);
 665                 assert_se(S_ISCHR(st.st_mode));
 666                 assert_se((st.st_mode & 0777) == 0640);
 667                 assert_se(timespec_load(&st.st_mtim) == test_mtime);
 668         }
 669
 670         a = strjoina(p, "/lnk");
 671         assert_se(symlink("target", a) >= 0);
 672         assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0);
 673         assert_se(lstat(a, &st) >= 0);
 674         assert_se(st.st_uid == test_uid);
 675         assert_se(st.st_gid == test_gid);
 676         assert_se(S_ISLNK(st.st_mode));
 677         assert_se(timespec_load(&st.st_mtim) == test_mtime);
 678 }
 679
 680 TEST(unlinkat_deallocate) {
 681         _cleanup_free_ char *p = NULL;
 682         _cleanup_close_ int fd = -1;
 683         struct stat st;
 684
 685         assert_se(tempfn_random_child(arg_test_dir, "unlink-deallocation", &p) >= 0);
 686
 687         fd = open(p, O_WRONLY|O_CLOEXEC|O_CREAT|O_EXCL, 0600);
 688         assert_se(fd >= 0);
 689
 690         assert_se(write(fd, "hallo\n", 6) == 6);
 691
 692         assert_se(fstat(fd, &st) >= 0);
 693         assert_se(st.st_size == 6);
 694         assert_se(st.st_blocks > 0);
 695         assert_se(st.st_nlink == 1);
 696
 697         assert_se(unlinkat_deallocate(AT_FDCWD, p, UNLINK_ERASE) >= 0);
 698
 699         assert_se(fstat(fd, &st) >= 0);
 700         assert_se(IN_SET(st.st_size, 0, 6)); /* depending on whether hole punching worked the size will be 6
 701                                                 (it worked) or 0 (we had to resort to truncation) */
 702         assert_se(st.st_blocks == 0);
 703         assert_se(st.st_nlink == 0);
 704 }
 705
 706 TEST(fsync_directory_of_file) {
 707         _cleanup_close_ int fd = -1;
 708
 709         fd = open_tmpfile_unlinkable(arg_test_dir, O_RDWR);
 710         assert_se(fd >= 0);
 711
 712         assert_se(fsync_directory_of_file(fd) >= 0);
 713 }
 714
 715 TEST(rename_noreplace) {
 716         static const char* const table[] = {
 717                 "/reg",
 718                 "/dir",
 719                 "/fifo",
 720                 "/socket",
 721                 "/symlink",
 722                 NULL
 723         };
 724
 725         _cleanup_(rm_rf_physical_and_freep) char *z = NULL;
 726         const char *j = NULL;
 727
 728         if (arg_test_dir)
 729                 j = strjoina(arg_test_dir, "/testXXXXXX");
 730         assert_se(mkdtemp_malloc(j, &z) >= 0);
 731
 732         j = strjoina(z, table[0]);
 733         assert_se(touch(j) >= 0);
 734
 735         j = strjoina(z, table[1]);
 736         assert_se(mkdir(j, 0777) >= 0);
 737
 738         j = strjoina(z, table[2]);
 739         (void) mkfifo(j, 0777);
 740
 741         j = strjoina(z, table[3]);
 742         (void) mknod(j, S_IFSOCK | 0777, 0);
 743
 744         j = strjoina(z, table[4]);
 745         (void) symlink("foobar", j);
 746
 747         STRV_FOREACH(a, table) {
 748                 _cleanup_free_ char *x = NULL, *y = NULL;
 749
 750                 x = strjoin(z, *a);
 751                 assert_se(x);
 752
 753                 if (access(x, F_OK) < 0) {
 754                         assert_se(errno == ENOENT);
 755                         continue;
 756                 }
 757
 758                 STRV_FOREACH(b, table) {
 759                         _cleanup_free_ char *w = NULL;
 760
 761                         w = strjoin(z, *b);
 762                         assert_se(w);
 763
 764                         if (access(w, F_OK) < 0) {
 765                                 assert_se(errno == ENOENT);
 766                                 continue;
 767                         }
 768
 769                         assert_se(rename_noreplace(AT_FDCWD, x, AT_FDCWD, w) == -EEXIST);
 770                 }
 771
 772                 y = strjoin(z, "/somethingelse");
 773                 assert_se(y);
 774
 775                 assert_se(rename_noreplace(AT_FDCWD, x, AT_FDCWD, y) >= 0);
 776                 assert_se(rename_noreplace(AT_FDCWD, y, AT_FDCWD, x) >= 0);
 777         }
 778 }
 779
 780 TEST(chmod_and_chown) {
 781         _cleanup_(rm_rf_physical_and_freep) char *d = NULL;
 782         struct stat st;
 783         const char *p;
 784
 785         if (geteuid() != 0)
 786                 return;
 787
 788         BLOCK_WITH_UMASK(0000);
 789
 790         assert_se(mkdtemp_malloc(NULL, &d) >= 0);
 791
 792         p = strjoina(d, "/reg");
 793         assert_se(mknod(p, S_IFREG | 0123, 0) >= 0);
 794
 795         assert_se(chmod_and_chown(p, S_IFREG | 0321, 1, 2) >= 0);
 796         assert_se(chmod_and_chown(p, S_IFDIR | 0555, 3, 4) == -EINVAL);
 797
 798         assert_se(lstat(p, &st) >= 0);
 799         assert_se(S_ISREG(st.st_mode));
 800         assert_se((st.st_mode & 07777) == 0321);
 801
 802         p = strjoina(d, "/dir");
 803         assert_se(mkdir(p, 0123) >= 0);
 804
 805         assert_se(chmod_and_chown(p, S_IFDIR | 0321, 1, 2) >= 0);
 806         assert_se(chmod_and_chown(p, S_IFREG | 0555, 3, 4) == -EINVAL);
 807
 808         assert_se(lstat(p, &st) >= 0);
 809         assert_se(S_ISDIR(st.st_mode));
 810         assert_se((st.st_mode & 07777) == 0321);
 811
 812         p = strjoina(d, "/lnk");
 813         assert_se(symlink("idontexist", p) >= 0);
 814
 815         assert_se(chmod_and_chown(p, S_IFLNK | 0321, 1, 2) >= 0);
 816         assert_se(chmod_and_chown(p, S_IFREG | 0555, 3, 4) == -EINVAL);
 817         assert_se(chmod_and_chown(p, S_IFDIR | 0555, 3, 4) == -EINVAL);
 818
 819         assert_se(lstat(p, &st) >= 0);
 820         assert_se(S_ISLNK(st.st_mode));
 821 }
 822
 823 static void create_binary_file(const char *p, const void *data, size_t l) {
 824         _cleanup_close_ int fd = -1;
 825
 826         fd = open(p, O_CREAT|O_WRONLY|O_EXCL|O_CLOEXEC, 0600);
 827         assert_se(fd >= 0);
 828         assert_se(write(fd, data, l) == (ssize_t) l);
 829 }
 830
 831 TEST(conservative_rename) {
 832         _cleanup_(unlink_and_freep) char *p = NULL;
 833         _cleanup_free_ char *q = NULL;
 834         size_t l = 16*1024 + random_u64() % (32 * 1024); /* some randomly sized buffer 16k…48k */
 835         uint8_t buffer[l+1];
 836
 837         random_bytes(buffer, l);
 838
 839         assert_se(tempfn_random_child(NULL, NULL, &p) >= 0);
 840         create_binary_file(p, buffer, l);
 841
 842         assert_se(tempfn_random_child(NULL, NULL, &q) >= 0);
 843
 844         /* Check that the hardlinked "copy" is detected */
 845         assert_se(link(p, q) >= 0);
 846         assert_se(conservative_renameat(AT_FDCWD, q, AT_FDCWD, p) == 0);
 847         assert_se(access(q, F_OK) < 0 && errno == ENOENT);
 848
 849         /* Check that a manual copy is detected */
 850         assert_se(copy_file(p, q, 0, MODE_INVALID, 0, 0, COPY_REFLINK) >= 0);
 851         assert_se(conservative_renameat(AT_FDCWD, q, AT_FDCWD, p) == 0);
 852         assert_se(access(q, F_OK) < 0 && errno == ENOENT);
 853
 854         /* Check that a manual new writeout is also detected */
 855         create_binary_file(q, buffer, l);
 856         assert_se(conservative_renameat(AT_FDCWD, q, AT_FDCWD, p) == 0);
 857         assert_se(access(q, F_OK) < 0 && errno == ENOENT);
 858
 859         /* Check that a minimally changed version is detected */
 860         buffer[47] = ~buffer[47];
 861         create_binary_file(q, buffer, l);
 862         assert_se(conservative_renameat(AT_FDCWD, q, AT_FDCWD, p) > 0);
 863         assert_se(access(q, F_OK) < 0 && errno == ENOENT);
 864
 865         /* Check that this really is new updated version */
 866         create_binary_file(q, buffer, l);
 867         assert_se(conservative_renameat(AT_FDCWD, q, AT_FDCWD, p) == 0);
 868         assert_se(access(q, F_OK) < 0 && errno == ENOENT);
 869
 870         /* Make sure we detect extended files */
 871         buffer[l++] = 47;
 872         create_binary_file(q, buffer, l);
 873         assert_se(conservative_renameat(AT_FDCWD, q, AT_FDCWD, p) > 0);
 874         assert_se(access(q, F_OK) < 0 && errno == ENOENT);
 875
 876         /* Make sure we detect truncated files */
 877         l--;
 878         create_binary_file(q, buffer, l);
 879         assert_se(conservative_renameat(AT_FDCWD, q, AT_FDCWD, p) > 0);
 880         assert_se(access(q, F_OK) < 0 && errno == ENOENT);
 881 }
 882
 883 static void test_rmdir_parents_one(
 884                 const char *prefix,
 885                 const char *path,
 886                 const char *stop,
 887                 int expected,
 888                 const char *test_exist,
 889                 const char *test_nonexist_subdir) {
 890
 891         const char *p, *s;
 892
 893         log_debug("/* %s(%s, %s) */", __func__, path, stop);
 894
 895         p = strjoina(prefix, path);
 896         s = strjoina(prefix, stop);
 897
 898         if (expected >= 0)
 899                 assert_se(mkdir_parents(p, 0700) >= 0);
 900
 901         assert_se(rmdir_parents(p, s) == expected);
 902
 903         if (expected >= 0) {
 904                 const char *e, *f;
 905
 906                 e = strjoina(prefix, test_exist);
 907                 f = strjoina(e, test_nonexist_subdir);
 908
 909                 assert_se(access(e, F_OK) >= 0);
 910                 assert_se(access(f, F_OK) < 0);
 911         }
 912 }
 913
 914 TEST(rmdir_parents) {
 915         char *temp;
 916
 917         temp = strjoina(arg_test_dir ?: "/tmp", "/test-rmdir.XXXXXX");
 918         assert_se(mkdtemp(temp));
 919
 920         test_rmdir_parents_one(temp, "/aaa/../hoge/foo", "/hoge/foo", -EINVAL, NULL, NULL);
 921         test_rmdir_parents_one(temp, "/aaa/bbb/ccc", "/hoge/../aaa", -EINVAL, NULL, NULL);
 922
 923         test_rmdir_parents_one(temp, "/aaa/bbb/ccc/ddd/eee", "/aaa/bbb/ccc/ddd", 0, "/aaa/bbb/ccc/ddd", "/eee");
 924         test_rmdir_parents_one(temp, "/aaa/bbb/ccc/ddd/eee", "/aaa/bbb/ccc", 0, "/aaa/bbb/ccc", "/ddd");
 925         test_rmdir_parents_one(temp, "/aaa/bbb/ccc/ddd/eee", "/aaa/bbb", 0, "/aaa/bbb", "/ccc");
 926         test_rmdir_parents_one(temp, "/aaa/bbb/ccc/ddd/eee", "/aaa", 0, "/aaa", "/bbb");
 927         test_rmdir_parents_one(temp, "/aaa/bbb/ccc/ddd/eee", "/", 0, "/", "/aaa");
 928
 929         test_rmdir_parents_one(temp, "/aaa/bbb/ccc/ddd/eee", "/aaa/hoge/foo", 0, "/aaa", "/bbb");
 930         test_rmdir_parents_one(temp, "/aaa////bbb/.//ccc//ddd/eee///./.", "///././aaa/.", 0, "/aaa", "/bbb");
 931
 932         assert_se(rm_rf(temp, REMOVE_ROOT|REMOVE_PHYSICAL) >= 0);
 933 }
 934
 935 static void test_parse_cifs_service_one(const char *f, const char *h, const char *s, const char *d, int ret) {
 936         _cleanup_free_ char *a = NULL, *b = NULL, *c = NULL;
 937
 938         assert_se(parse_cifs_service(f, &a, &b, &c) == ret);
 939         assert_se(streq_ptr(a, h));
 940         assert_se(streq_ptr(b, s));
 941         assert_se(streq_ptr(c, d));
 942 }
 943
 944 TEST(parse_cifs_service) {
 945         test_parse_cifs_service_one("//foo/bar/baz", "foo", "bar", "baz", 0);
 946         test_parse_cifs_service_one("\\\\foo\\bar\\baz", "foo", "bar", "baz", 0);
 947         test_parse_cifs_service_one("//foo/bar", "foo", "bar", NULL, 0);
 948         test_parse_cifs_service_one("\\\\foo\\bar", "foo", "bar", NULL, 0);
 949         test_parse_cifs_service_one("//foo/bar/baz/uuu", "foo", "bar", "baz/uuu", 0);
 950         test_parse_cifs_service_one("\\\\foo\\bar\\baz\\uuu", "foo", "bar", "baz/uuu", 0);
 951
 952         test_parse_cifs_service_one(NULL, NULL, NULL, NULL, -EINVAL);
 953         test_parse_cifs_service_one("", NULL, NULL, NULL, -EINVAL);
 954         test_parse_cifs_service_one("abc", NULL, NULL, NULL, -EINVAL);
 955         test_parse_cifs_service_one("abc/cde/efg", NULL, NULL, NULL, -EINVAL);
 956         test_parse_cifs_service_one("//foo/bar/baz/..", NULL, NULL, NULL, -EINVAL);
 957         test_parse_cifs_service_one("//foo///", NULL, NULL, NULL, -EINVAL);
 958         test_parse_cifs_service_one("//foo/.", NULL, NULL, NULL, -EINVAL);
 959         test_parse_cifs_service_one("//foo/a/.", NULL, NULL, NULL, -EINVAL);
 960         test_parse_cifs_service_one("//./a", NULL, NULL, NULL, -EINVAL);
 961 }
 962
 963 TEST(open_mkdir_at) {
 964         _cleanup_close_ int fd = -1, subdir_fd = -1, subsubdir_fd = -1;
 965         _cleanup_(rm_rf_physical_and_freep) char *t = NULL;
 966
 967         assert_se(open_mkdir_at(AT_FDCWD, "/proc", O_EXCL|O_CLOEXEC, 0) == -EEXIST);
 968
 969         fd = open_mkdir_at(AT_FDCWD, "/proc", O_CLOEXEC, 0);
 970         assert_se(fd >= 0);
 971         fd = safe_close(fd);
 972
 973         assert_se(open_mkdir_at(AT_FDCWD, "/bin/sh", O_EXCL|O_CLOEXEC, 0) == -EEXIST);
 974         assert_se(open_mkdir_at(AT_FDCWD, "/bin/sh", O_CLOEXEC, 0) == -EEXIST);
 975
 976         assert_se(mkdtemp_malloc(NULL, &t) >= 0);
 977
 978         assert_se(open_mkdir_at(AT_FDCWD, t, O_EXCL|O_CLOEXEC, 0) == -EEXIST);
 979         assert_se(open_mkdir_at(AT_FDCWD, t, O_PATH|O_EXCL|O_CLOEXEC, 0) == -EEXIST);
 980
 981         fd = open_mkdir_at(AT_FDCWD, t, O_CLOEXEC, 0000);
 982         assert_se(fd >= 0);
 983         fd = safe_close(fd);
 984
 985         fd = open_mkdir_at(AT_FDCWD, t, O_PATH|O_CLOEXEC, 0000);
 986         assert_se(fd >= 0);
 987
 988         subdir_fd = open_mkdir_at(fd, "xxx", O_PATH|O_EXCL|O_CLOEXEC, 0700);
 989         assert_se(subdir_fd >= 0);
 990
 991         assert_se(open_mkdir_at(fd, "xxx", O_PATH|O_EXCL|O_CLOEXEC, 0) == -EEXIST);
 992
 993         subsubdir_fd = open_mkdir_at(subdir_fd, "yyy", O_EXCL|O_CLOEXEC, 0700);
 994         assert_se(subsubdir_fd >= 0);
 995         subsubdir_fd = safe_close(subsubdir_fd);
 996
 997         assert_se(open_mkdir_at(subdir_fd, "yyy", O_EXCL|O_CLOEXEC, 0) == -EEXIST);
 998
 999         assert_se(open_mkdir_at(fd, "xxx/yyy", O_EXCL|O_CLOEXEC, 0) == -EEXIST);
1000
1001         subsubdir_fd = open_mkdir_at(fd, "xxx/yyy", O_CLOEXEC, 0700);
1002         assert_se(subsubdir_fd >= 0);
1003 }
1004
1005 TEST(openat_report_new) {
1006         _cleanup_free_ char *j = NULL;
1007         _cleanup_(rm_rf_physical_and_freep) char *d = NULL;
1008         _cleanup_close_ int fd = -1;
1009         bool b;
1010
1011         assert_se(mkdtemp_malloc(NULL, &d) >= 0);
1012
1013         j = path_join(d, "test");
1014         assert_se(j);
1015
1016         fd = openat_report_new(AT_FDCWD, j, O_RDWR|O_CREAT, 0666, &b);
1017         assert_se(fd >= 0);
1018         fd = safe_close(fd);
1019         assert_se(b);
1020
1021         fd = openat_report_new(AT_FDCWD, j, O_RDWR|O_CREAT, 0666, &b);
1022         assert_se(fd >= 0);
1023         fd = safe_close(fd);
1024         assert_se(!b);
1025
1026         fd = openat_report_new(AT_FDCWD, j, O_RDWR|O_CREAT, 0666, &b);
1027         assert_se(fd >= 0);
1028         fd = safe_close(fd);
1029         assert_se(!b);
1030
1031         assert_se(unlink(j) >= 0);
1032
1033         fd = openat_report_new(AT_FDCWD, j, O_RDWR|O_CREAT, 0666, &b);
1034         assert_se(fd >= 0);
1035         fd = safe_close(fd);
1036         assert_se(b);
1037
1038         fd = openat_report_new(AT_FDCWD, j, O_RDWR|O_CREAT, 0666, &b);
1039         assert_se(fd >= 0);
1040         fd = safe_close(fd);
1041         assert_se(!b);
1042
1043         assert_se(unlink(j) >= 0);
1044
1045         fd = openat_report_new(AT_FDCWD, j, O_RDWR|O_CREAT, 0666, NULL);
1046         assert_se(fd >= 0);
1047         fd = safe_close(fd);
1048
1049         fd = openat_report_new(AT_FDCWD, j, O_RDWR|O_CREAT, 0666, &b);
1050         assert_se(fd >= 0);
1051         fd = safe_close(fd);
1052         assert_se(!b);
1053
1054         fd = openat_report_new(AT_FDCWD, j, O_RDWR, 0666, &b);
1055         assert_se(fd >= 0);
1056         fd = safe_close(fd);
1057         assert_se(!b);
1058
1059         fd = openat_report_new(AT_FDCWD, j, O_RDWR|O_CREAT|O_EXCL, 0666, &b);
1060         assert_se(fd == -EEXIST);
1061
1062         assert_se(unlink(j) >= 0);
1063
1064         fd = openat_report_new(AT_FDCWD, j, O_RDWR, 0666, &b);
1065         assert_se(fd == -ENOENT);
1066
1067         fd = openat_report_new(AT_FDCWD, j, O_RDWR|O_CREAT|O_EXCL, 0666, &b);
1068         assert_se(fd >= 0);
1069         fd = safe_close(fd);
1070         assert_se(b);
1071 }
1072
1073 static int intro(void) {
1074         arg_test_dir = saved_argv[1];
1075         return EXIT_SUCCESS;
1076 }
1077
1078 DEFINE_TEST_MAIN_WITH_INTRO(LOG_INFO, intro);