src/test/test-path-util.c

   1 /***
   2   This file is part of systemd.
   3
   4   Copyright 2013 Zbigniew Jędrzejewski-Szmek
   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 <stdio.h>
  21 #include <sys/mount.h>
  22 #include <unistd.h>
  23
  24 #include "alloc-util.h"
  25 #include "fd-util.h"
  26 #include "macro.h"
  27 #include "mount-util.h"
  28 #include "path-util.h"
  29 #include "rm-rf.h"
  30 #include "string-util.h"
  31 #include "strv.h"
  32 #include "util.h"
  33
  34 #define test_path_compare(a, b, result) {                 \
  35                 assert_se(path_compare(a, b) == result);  \
  36                 assert_se(path_compare(b, a) == -result); \
  37                 assert_se(path_equal(a, b) == !result);   \
  38                 assert_se(path_equal(b, a) == !result);   \
  39         }
  40
  41 static void test_path(void) {
  42         _cleanup_close_ int fd = -1;
  43
  44         test_path_compare("/goo", "/goo", 0);
  45         test_path_compare("/goo", "/goo", 0);
  46         test_path_compare("//goo", "/goo", 0);
  47         test_path_compare("//goo/////", "/goo", 0);
  48         test_path_compare("goo/////", "goo", 0);
  49
  50         test_path_compare("/goo/boo", "/goo//boo", 0);
  51         test_path_compare("//goo/boo", "/goo/boo//", 0);
  52
  53         test_path_compare("/", "///", 0);
  54
  55         test_path_compare("/x", "x/", 1);
  56         test_path_compare("x/", "/", -1);
  57
  58         test_path_compare("/x/./y", "x/y", 1);
  59         test_path_compare("x/.y", "x/y", -1);
  60
  61         test_path_compare("foo", "/foo", -1);
  62         test_path_compare("/foo", "/foo/bar", -1);
  63         test_path_compare("/foo/aaa", "/foo/b", -1);
  64         test_path_compare("/foo/aaa", "/foo/b/a", -1);
  65         test_path_compare("/foo/a", "/foo/aaa", -1);
  66         test_path_compare("/foo/a/b", "/foo/aaa", -1);
  67
  68         assert_se(path_is_absolute("/"));
  69         assert_se(!path_is_absolute("./"));
  70
  71         assert_se(is_path("/dir"));
  72         assert_se(is_path("a/b"));
  73         assert_se(!is_path("."));
  74
  75         assert_se(streq(basename("./aa/bb/../file.da."), "file.da."));
  76         assert_se(streq(basename("/aa///.file"), ".file"));
  77         assert_se(streq(basename("/aa///file..."), "file..."));
  78         assert_se(streq(basename("file.../"), ""));
  79
  80         fd = open("/", O_RDONLY|O_CLOEXEC|O_DIRECTORY|O_NOCTTY);
  81         assert_se(fd >= 0);
  82         assert_se(fd_is_mount_point(fd, "/", 0) > 0);
  83
  84         {
  85                 char p1[] = "aaa/bbb////ccc";
  86                 char p2[] = "//aaa/.////ccc";
  87                 char p3[] = "/./";
  88
  89                 assert_se(path_equal(path_kill_slashes(p1), "aaa/bbb/ccc"));
  90                 assert_se(path_equal(path_kill_slashes(p2), "/aaa/./ccc"));
  91                 assert_se(path_equal(path_kill_slashes(p3), "/./"));
  92         }
  93
  94         assert_se(PATH_IN_SET("/bin", "/", "/bin", "/foo"));
  95         assert_se(PATH_IN_SET("/bin", "/bin"));
  96         assert_se(PATH_IN_SET("/bin", "/foo/bar", "/bin"));
  97         assert_se(PATH_IN_SET("/", "/", "/", "/foo/bar"));
  98         assert_se(!PATH_IN_SET("/", "/abc", "/def"));
  99
 100         assert_se(path_equal_ptr(NULL, NULL));
 101         assert_se(path_equal_ptr("/a", "/a"));
 102         assert_se(!path_equal_ptr("/a", "/b"));
 103         assert_se(!path_equal_ptr("/a", NULL));
 104         assert_se(!path_equal_ptr(NULL, "/a"));
 105 }
 106
 107 static void test_find_binary(const char *self) {
 108         char *p;
 109
 110         assert_se(find_binary("/bin/sh", &p) == 0);
 111         puts(p);
 112         assert_se(path_equal(p, "/bin/sh"));
 113         free(p);
 114
 115         assert_se(find_binary(self, &p) == 0);
 116         puts(p);
 117         /* libtool might prefix the binary name with "lt-" */
 118         assert_se(endswith(p, "/lt-test-path-util") || endswith(p, "/test-path-util"));
 119         assert_se(path_is_absolute(p));
 120         free(p);
 121
 122         assert_se(find_binary("sh", &p) == 0);
 123         puts(p);
 124         assert_se(endswith(p, "/sh"));
 125         assert_se(path_is_absolute(p));
 126         free(p);
 127
 128         assert_se(find_binary("xxxx-xxxx", &p) == -ENOENT);
 129         assert_se(find_binary("/some/dir/xxxx-xxxx", &p) == -ENOENT);
 130 }
 131
 132 static void test_prefixes(void) {
 133         static const char* values[] = { "/a/b/c/d", "/a/b/c", "/a/b", "/a", "", NULL};
 134         unsigned i;
 135         char s[PATH_MAX];
 136         bool b;
 137
 138         i = 0;
 139         PATH_FOREACH_PREFIX_MORE(s, "/a/b/c/d") {
 140                 log_error("---%s---", s);
 141                 assert_se(streq(s, values[i++]));
 142         }
 143         assert_se(values[i] == NULL);
 144
 145         i = 1;
 146         PATH_FOREACH_PREFIX(s, "/a/b/c/d") {
 147                 log_error("---%s---", s);
 148                 assert_se(streq(s, values[i++]));
 149         }
 150         assert_se(values[i] == NULL);
 151
 152         i = 0;
 153         PATH_FOREACH_PREFIX_MORE(s, "////a////b////c///d///////")
 154                 assert_se(streq(s, values[i++]));
 155         assert_se(values[i] == NULL);
 156
 157         i = 1;
 158         PATH_FOREACH_PREFIX(s, "////a////b////c///d///////")
 159                 assert_se(streq(s, values[i++]));
 160         assert_se(values[i] == NULL);
 161
 162         PATH_FOREACH_PREFIX(s, "////")
 163                 assert_not_reached("Wut?");
 164
 165         b = false;
 166         PATH_FOREACH_PREFIX_MORE(s, "////") {
 167                 assert_se(!b);
 168                 assert_se(streq(s, ""));
 169                 b = true;
 170         }
 171         assert_se(b);
 172
 173         PATH_FOREACH_PREFIX(s, "")
 174                 assert_not_reached("wut?");
 175
 176         b = false;
 177         PATH_FOREACH_PREFIX_MORE(s, "") {
 178                 assert_se(!b);
 179                 assert_se(streq(s, ""));
 180                 b = true;
 181         }
 182 }
 183
 184 static void test_path_join(void) {
 185
 186 #define test_join(root, path, rest, expected) {  \
 187                 _cleanup_free_ char *z = NULL;   \
 188                 z = path_join(root, path, rest); \
 189                 assert_se(streq(z, expected));   \
 190         }
 191
 192         test_join("/root", "/a/b", "/c", "/root/a/b/c");
 193         test_join("/root", "a/b", "c", "/root/a/b/c");
 194         test_join("/root", "/a/b", "c", "/root/a/b/c");
 195         test_join("/root", "/", "c", "/root/c");
 196         test_join("/root", "/", NULL, "/root/");
 197
 198         test_join(NULL, "/a/b", "/c", "/a/b/c");
 199         test_join(NULL, "a/b", "c", "a/b/c");
 200         test_join(NULL, "/a/b", "c", "/a/b/c");
 201         test_join(NULL, "/", "c", "/c");
 202         test_join(NULL, "/", NULL, "/");
 203 }
 204
 205 #if 0 /// UNNEEDED by elogind
 206 static void test_fsck_exists(void) {
 207         /* Ensure we use a sane default for PATH. */
 208         unsetenv("PATH");
 209
 210         /* fsck.minix is provided by util-linux and will probably exist. */
 211         assert_se(fsck_exists("minix") == 1);
 212
 213         assert_se(fsck_exists("AbCdE") == 0);
 214         assert_se(fsck_exists("/../bin/") == 0);
 215 }
 216
 217 static void test_make_relative(void) {
 218         char *result;
 219
 220         assert_se(path_make_relative("some/relative/path", "/some/path", &result) < 0);
 221         assert_se(path_make_relative("/some/path", "some/relative/path", &result) < 0);
 222
 223 #define test(from_dir, to_path, expected) {                \
 224                 _cleanup_free_ char *z = NULL;             \
 225                 path_make_relative(from_dir, to_path, &z); \
 226                 assert_se(streq(z, expected));             \
 227         }
 228
 229         test("/", "/", ".");
 230         test("/", "/some/path", "some/path");
 231         test("/some/path", "/some/path", ".");
 232         test("/some/path", "/some/path/in/subdir", "in/subdir");
 233         test("/some/path", "/", "../..");
 234         test("/some/path", "/some/other/path", "../other/path");
 235         test("//extra/////slashes///won't////fool///anybody//", "////extra///slashes////are/just///fine///", "../../../are/just/fine");
 236 }
 237 #endif // 0
 238
 239 static void test_strv_resolve(void) {
 240         char tmp_dir[] = "/tmp/test-path-util-XXXXXX";
 241         _cleanup_strv_free_ char **search_dirs = NULL;
 242         _cleanup_strv_free_ char **absolute_dirs = NULL;
 243         char **d;
 244
 245         assert_se(mkdtemp(tmp_dir) != NULL);
 246
 247         search_dirs = strv_new("/dir1", "/dir2", "/dir3", NULL);
 248         assert_se(search_dirs);
 249         STRV_FOREACH(d, search_dirs) {
 250                 char *p = strappend(tmp_dir, *d);
 251                 assert_se(p);
 252                 assert_se(strv_push(&absolute_dirs, p) == 0);
 253         }
 254
 255         assert_se(mkdir(absolute_dirs[0], 0700) == 0);
 256         assert_se(mkdir(absolute_dirs[1], 0700) == 0);
 257         assert_se(symlink("dir2", absolute_dirs[2]) == 0);
 258
 259         path_strv_resolve(search_dirs, tmp_dir);
 260         assert_se(streq(search_dirs[0], "/dir1"));
 261         assert_se(streq(search_dirs[1], "/dir2"));
 262         assert_se(streq(search_dirs[2], "/dir2"));
 263
 264         assert_se(rm_rf(tmp_dir, REMOVE_ROOT|REMOVE_PHYSICAL) == 0);
 265 }
 266
 267 static void test_path_startswith(void) {
 268         const char *p;
 269
 270         p = path_startswith("/foo/bar/barfoo/", "/foo");
 271         assert_se(streq_ptr(p, "bar/barfoo/"));
 272
 273         p = path_startswith("/foo/bar/barfoo/", "/foo/");
 274         assert_se(streq_ptr(p, "bar/barfoo/"));
 275
 276         p = path_startswith("/foo/bar/barfoo/", "/");
 277         assert_se(streq_ptr(p, "foo/bar/barfoo/"));
 278
 279         p = path_startswith("/foo/bar/barfoo/", "////");
 280         assert_se(streq_ptr(p, "foo/bar/barfoo/"));
 281
 282         p = path_startswith("/foo/bar/barfoo/", "/foo//bar/////barfoo///");
 283         assert_se(streq_ptr(p, ""));
 284
 285         p = path_startswith("/foo/bar/barfoo/", "/foo/bar/barfoo////");
 286         assert_se(streq_ptr(p, ""));
 287
 288         p = path_startswith("/foo/bar/barfoo/", "/foo/bar///barfoo/");
 289         assert_se(streq_ptr(p, ""));
 290
 291         p = path_startswith("/foo/bar/barfoo/", "/foo////bar/barfoo/");
 292         assert_se(streq_ptr(p, ""));
 293
 294         p = path_startswith("/foo/bar/barfoo/", "////foo/bar/barfoo/");
 295         assert_se(streq_ptr(p, ""));
 296
 297         p = path_startswith("/foo/bar/barfoo/", "/foo/bar/barfoo");
 298         assert_se(streq_ptr(p, ""));
 299
 300         assert_se(!path_startswith("/foo/bar/barfoo/", "/foo/bar/barfooa/"));
 301         assert_se(!path_startswith("/foo/bar/barfoo/", "/foo/bar/barfooa"));
 302         assert_se(!path_startswith("/foo/bar/barfoo/", ""));
 303         assert_se(!path_startswith("/foo/bar/barfoo/", "/bar/foo"));
 304         assert_se(!path_startswith("/foo/bar/barfoo/", "/f/b/b/"));
 305 }
 306
 307 static void test_prefix_root_one(const char *r, const char *p, const char *expected) {
 308         _cleanup_free_ char *s = NULL;
 309         const char *t;
 310
 311         assert_se(s = prefix_root(r, p));
 312         assert_se(streq_ptr(s, expected));
 313
 314         t = prefix_roota(r, p);
 315         assert_se(t);
 316         assert_se(streq_ptr(t, expected));
 317 }
 318
 319 static void test_prefix_root(void) {
 320         test_prefix_root_one("/", "/foo", "/foo");
 321         test_prefix_root_one(NULL, "/foo", "/foo");
 322         test_prefix_root_one("", "/foo", "/foo");
 323         test_prefix_root_one("///", "/foo", "/foo");
 324         test_prefix_root_one("/", "////foo", "/foo");
 325         test_prefix_root_one(NULL, "////foo", "/foo");
 326
 327         test_prefix_root_one("/foo", "/bar", "/foo/bar");
 328         test_prefix_root_one("/foo", "bar", "/foo/bar");
 329         test_prefix_root_one("foo", "bar", "foo/bar");
 330         test_prefix_root_one("/foo/", "/bar", "/foo/bar");
 331         test_prefix_root_one("/foo/", "//bar", "/foo/bar");
 332         test_prefix_root_one("/foo///", "//bar", "/foo/bar");
 333 }
 334
 335 static void test_path_is_mount_point(void) {
 336         int fd;
 337         char tmp_dir[] = "/tmp/test-path-is-mount-point-XXXXXX";
 338         _cleanup_free_ char *file1 = NULL, *file2 = NULL, *link1 = NULL, *link2 = NULL;
 339         _cleanup_free_ char *dir1 = NULL, *dir1file = NULL, *dirlink1 = NULL, *dirlink1file = NULL;
 340         _cleanup_free_ char *dir2 = NULL, *dir2file = NULL;
 341
 342         assert_se(path_is_mount_point("/", NULL, AT_SYMLINK_FOLLOW) > 0);
 343         assert_se(path_is_mount_point("/", NULL, 0) > 0);
 344
 345         assert_se(path_is_mount_point("/proc", NULL, AT_SYMLINK_FOLLOW) > 0);
 346         assert_se(path_is_mount_point("/proc", NULL, 0) > 0);
 347
 348         assert_se(path_is_mount_point("/proc/1", NULL, AT_SYMLINK_FOLLOW) == 0);
 349         assert_se(path_is_mount_point("/proc/1", NULL, 0) == 0);
 350
 351         assert_se(path_is_mount_point("/sys", NULL, AT_SYMLINK_FOLLOW) > 0);
 352         assert_se(path_is_mount_point("/sys", NULL, 0) > 0);
 353
 354         /* we'll create a hierarchy of different kinds of dir/file/link
 355          * layouts:
 356          *
 357          * <tmp>/file1, <tmp>/file2
 358          * <tmp>/link1 -> file1, <tmp>/link2 -> file2
 359          * <tmp>/dir1/
 360          * <tmp>/dir1/file
 361          * <tmp>/dirlink1 -> dir1
 362          * <tmp>/dirlink1file -> dirlink1/file
 363          * <tmp>/dir2/
 364          * <tmp>/dir2/file
 365          */
 366
 367         /* file mountpoints */
 368         assert_se(mkdtemp(tmp_dir) != NULL);
 369         file1 = path_join(NULL, tmp_dir, "file1");
 370         assert_se(file1);
 371         file2 = path_join(NULL, tmp_dir, "file2");
 372         assert_se(file2);
 373         fd = open(file1, O_WRONLY|O_CREAT|O_EXCL|O_CLOEXEC, 0664);
 374         assert_se(fd > 0);
 375         close(fd);
 376         fd = open(file2, O_WRONLY|O_CREAT|O_EXCL|O_CLOEXEC, 0664);
 377         assert_se(fd > 0);
 378         close(fd);
 379         link1 = path_join(NULL, tmp_dir, "link1");
 380         assert_se(link1);
 381         assert_se(symlink("file1", link1) == 0);
 382         link2 = path_join(NULL, tmp_dir, "link2");
 383         assert_se(link1);
 384         assert_se(symlink("file2", link2) == 0);
 385
 386         assert_se(path_is_mount_point(file1, NULL, AT_SYMLINK_FOLLOW) == 0);
 387         assert_se(path_is_mount_point(file1, NULL, 0) == 0);
 388         assert_se(path_is_mount_point(link1, NULL, AT_SYMLINK_FOLLOW) == 0);
 389         assert_se(path_is_mount_point(link1, NULL, 0) == 0);
 390
 391         /* directory mountpoints */
 392         dir1 = path_join(NULL, tmp_dir, "dir1");
 393         assert_se(dir1);
 394         assert_se(mkdir(dir1, 0755) == 0);
 395         dirlink1 = path_join(NULL, tmp_dir, "dirlink1");
 396         assert_se(dirlink1);
 397         assert_se(symlink("dir1", dirlink1) == 0);
 398         dirlink1file = path_join(NULL, tmp_dir, "dirlink1file");
 399         assert_se(dirlink1file);
 400         assert_se(symlink("dirlink1/file", dirlink1file) == 0);
 401         dir2 = path_join(NULL, tmp_dir, "dir2");
 402         assert_se(dir2);
 403         assert_se(mkdir(dir2, 0755) == 0);
 404
 405         assert_se(path_is_mount_point(dir1, NULL, AT_SYMLINK_FOLLOW) == 0);
 406         assert_se(path_is_mount_point(dir1, NULL, 0) == 0);
 407         assert_se(path_is_mount_point(dirlink1, NULL, AT_SYMLINK_FOLLOW) == 0);
 408         assert_se(path_is_mount_point(dirlink1, NULL, 0) == 0);
 409
 410         /* file in subdirectory mountpoints */
 411         dir1file = path_join(NULL, dir1, "file");
 412         assert_se(dir1file);
 413         fd = open(dir1file, O_WRONLY|O_CREAT|O_EXCL|O_CLOEXEC, 0664);
 414         assert_se(fd > 0);
 415         close(fd);
 416
 417         assert_se(path_is_mount_point(dir1file, NULL, AT_SYMLINK_FOLLOW) == 0);
 418         assert_se(path_is_mount_point(dir1file, NULL, 0) == 0);
 419         assert_se(path_is_mount_point(dirlink1file, NULL, AT_SYMLINK_FOLLOW) == 0);
 420         assert_se(path_is_mount_point(dirlink1file, NULL, 0) == 0);
 421
 422         /* these tests will only work as root */
 423         if (mount(file1, file2, NULL, MS_BIND, NULL) >= 0) {
 424                 int rt, rf, rlt, rlf, rl1t, rl1f;
 425
 426                 /* files */
 427                 /* capture results in vars, to avoid dangling mounts on failure */
 428                 rf = path_is_mount_point(file2, NULL, 0);
 429                 rt = path_is_mount_point(file2, NULL, AT_SYMLINK_FOLLOW);
 430                 rlf = path_is_mount_point(link2, NULL, 0);
 431                 rlt = path_is_mount_point(link2, NULL, AT_SYMLINK_FOLLOW);
 432
 433                 assert_se(umount(file2) == 0);
 434
 435                 assert_se(rf == 1);
 436                 assert_se(rt == 1);
 437                 assert_se(rlf == 0);
 438                 assert_se(rlt == 1);
 439
 440                 /* dirs */
 441                 dir2file = path_join(NULL, dir2, "file");
 442                 assert_se(dir2file);
 443                 fd = open(dir2file, O_WRONLY|O_CREAT|O_EXCL|O_CLOEXEC, 0664);
 444                 assert_se(fd > 0);
 445                 close(fd);
 446
 447                 assert_se(mount(dir2, dir1, NULL, MS_BIND, NULL) >= 0);
 448
 449                 rf = path_is_mount_point(dir1, NULL, 0);
 450                 rt = path_is_mount_point(dir1, NULL, AT_SYMLINK_FOLLOW);
 451                 rlf = path_is_mount_point(dirlink1, NULL, 0);
 452                 rlt = path_is_mount_point(dirlink1, NULL, AT_SYMLINK_FOLLOW);
 453                 /* its parent is a mount point, but not /file itself */
 454                 rl1f = path_is_mount_point(dirlink1file, NULL, 0);
 455                 rl1t = path_is_mount_point(dirlink1file, NULL, AT_SYMLINK_FOLLOW);
 456
 457                 assert_se(umount(dir1) == 0);
 458
 459                 assert_se(rf == 1);
 460                 assert_se(rt == 1);
 461                 assert_se(rlf == 0);
 462                 assert_se(rlt == 1);
 463                 assert_se(rl1f == 0);
 464                 assert_se(rl1t == 0);
 465
 466         } else
 467                 printf("Skipping bind mount file test: %m\n");
 468
 469         assert_se(rm_rf(tmp_dir, REMOVE_ROOT|REMOVE_PHYSICAL) == 0);
 470 }
 471
 472 static void test_file_in_same_dir(void) {
 473         char *t;
 474
 475         t = file_in_same_dir("/", "a");
 476         assert_se(streq(t, "/a"));
 477         free(t);
 478
 479         t = file_in_same_dir("/", "/a");
 480         assert_se(streq(t, "/a"));
 481         free(t);
 482
 483         t = file_in_same_dir("", "a");
 484         assert_se(streq(t, "a"));
 485         free(t);
 486
 487         t = file_in_same_dir("a/", "a");
 488         assert_se(streq(t, "a/a"));
 489         free(t);
 490
 491         t = file_in_same_dir("bar/foo", "bar");
 492         assert_se(streq(t, "bar/bar"));
 493         free(t);
 494 }
 495
 496 static void test_filename_is_valid(void) {
 497         char foo[FILENAME_MAX+2];
 498         int i;
 499
 500         assert_se(!filename_is_valid(""));
 501         assert_se(!filename_is_valid("/bar/foo"));
 502         assert_se(!filename_is_valid("/"));
 503         assert_se(!filename_is_valid("."));
 504         assert_se(!filename_is_valid(".."));
 505
 506         for (i=0; i<FILENAME_MAX+1; i++)
 507                 foo[i] = 'a';
 508         foo[FILENAME_MAX+1] = '\0';
 509
 510         assert_se(!filename_is_valid(foo));
 511
 512         assert_se(filename_is_valid("foo_bar-333"));
 513         assert_se(filename_is_valid("o.o"));
 514 }
 515
 516 static void test_hidden_or_backup_file(void) {
 517         assert_se(hidden_or_backup_file(".hidden"));
 518         assert_se(hidden_or_backup_file("..hidden"));
 519         assert_se(!hidden_or_backup_file("hidden."));
 520
 521         assert_se(hidden_or_backup_file("backup~"));
 522         assert_se(hidden_or_backup_file(".backup~"));
 523
 524         assert_se(hidden_or_backup_file("lost+found"));
 525         assert_se(hidden_or_backup_file("aquota.user"));
 526         assert_se(hidden_or_backup_file("aquota.group"));
 527
 528         assert_se(hidden_or_backup_file("test.rpmnew"));
 529         assert_se(hidden_or_backup_file("test.dpkg-old"));
 530         assert_se(hidden_or_backup_file("test.dpkg-remove"));
 531         assert_se(hidden_or_backup_file("test.swp"));
 532
 533         assert_se(!hidden_or_backup_file("test.rpmnew."));
 534         assert_se(!hidden_or_backup_file("test.dpkg-old.foo"));
 535 }
 536
 537 #if 0 /// UNNEEDED by elogind
 538 static void test_systemd_installation_has_version(const char *path) {
 539         int r;
 540         const unsigned versions[] = {0, 231, atoi(PACKAGE_VERSION), 999};
 541         unsigned i;
 542
 543         for (i = 0; i < ELEMENTSOF(versions); i++) {
 544                 r = systemd_installation_has_version(path, versions[i]);
 545                 assert_se(r >= 0);
 546                 log_info("%s has systemd >= %u: %s",
 547                          path ?: "Current installation", versions[i], yes_no(r));
 548         }
 549 }
 550 #endif // 0
 551
 552 int main(int argc, char **argv) {
 553         log_set_max_level(LOG_DEBUG);
 554         log_parse_environment();
 555         log_open();
 556
 557         test_path();
 558         test_find_binary(argv[0]);
 559         test_prefixes();
 560         test_path_join();
 561 #if 0 /// UNNEEDED by elogind
 562         test_fsck_exists();
 563         test_make_relative();
 564 #endif // 0
 565         test_strv_resolve();
 566         test_path_startswith();
 567         test_prefix_root();
 568         test_path_is_mount_point();
 569         test_file_in_same_dir();
 570         test_filename_is_valid();
 571         test_hidden_or_backup_file();
 572
 573 #if 0 /// UNNEEDED by elogind
 574         test_systemd_installation_has_version(argv[1]); /* NULL is OK */
 575 #endif // 0
 576
 577         return 0;
 578 }