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Diffstat (limited to 'src/test/test-chase.c')
| -rw-r--r-- | src/test/test-chase.c | 614 |
1 files changed, 614 insertions, 0 deletions
diff --git a/src/test/test-chase.c b/src/test/test-chase.c new file mode 100644 index 0000000000..dee781929d --- /dev/null +++ b/src/test/test-chase.c @@ -0,0 +1,614 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <unistd.h> + +#include "alloc-util.h" +#include "chase.h" +#include "dirent-util.h" +#include "fd-util.h" +#include "fs-util.h" +#include "id128-util.h" +#include "mkdir.h" +#include "path-util.h" +#include "rm-rf.h" +#include "string-util.h" +#include "tests.h" +#include "tmpfile-util.h" + +static const char *arg_test_dir = NULL; + +TEST(chase) { + _cleanup_free_ char *result = NULL, *pwd = NULL; + _cleanup_close_ int pfd = -EBADF; + char *temp; + const char *top, *p, *pslash, *q, *qslash; + struct stat st; + int r; + + temp = strjoina(arg_test_dir ?: "/tmp", "/test-chase.XXXXXX"); + assert_se(mkdtemp(temp)); + + top = strjoina(temp, "/top"); + assert_se(mkdir(top, 0700) >= 0); + + p = strjoina(top, "/dot"); + if (symlink(".", p) < 0) { + assert_se(IN_SET(errno, EINVAL, ENOSYS, ENOTTY, EPERM)); + log_tests_skipped_errno(errno, "symlink() not possible"); + goto cleanup; + }; + + p = strjoina(top, "/dotdot"); + assert_se(symlink("..", p) >= 0); + + p = strjoina(top, "/dotdota"); + assert_se(symlink("../a", p) >= 0); + + p = strjoina(temp, "/a"); + assert_se(symlink("b", p) >= 0); + + p = strjoina(temp, "/b"); + assert_se(symlink("/usr", p) >= 0); + + p = strjoina(temp, "/start"); + assert_se(symlink("top/dot/dotdota", p) >= 0); + + /* Paths that use symlinks underneath the "root" */ + + r = chase(p, NULL, 0, &result, NULL); + assert_se(r > 0); + assert_se(path_equal(result, "/usr")); + result = mfree(result); + + pslash = strjoina(p, "/"); + r = chase(pslash, NULL, 0, &result, NULL); + assert_se(r > 0); + assert_se(path_equal(result, "/usr/")); + result = mfree(result); + + r = chase(p, temp, 0, &result, NULL); + assert_se(r == -ENOENT); + + r = chase(pslash, temp, 0, &result, NULL); + assert_se(r == -ENOENT); + + q = strjoina(temp, "/usr"); + + r = chase(p, temp, CHASE_NONEXISTENT, &result, NULL); + assert_se(r == 0); + assert_se(path_equal(result, q)); + result = mfree(result); + + qslash = strjoina(q, "/"); + + r = chase(pslash, temp, CHASE_NONEXISTENT, &result, NULL); + assert_se(r == 0); + assert_se(path_equal(result, qslash)); + result = mfree(result); + + assert_se(mkdir(q, 0700) >= 0); + + r = chase(p, temp, 0, &result, NULL); + assert_se(r > 0); + assert_se(path_equal(result, q)); + result = mfree(result); + + r = chase(pslash, temp, 0, &result, NULL); + assert_se(r > 0); + assert_se(path_equal(result, qslash)); + result = mfree(result); + + p = strjoina(temp, "/slash"); + assert_se(symlink("/", p) >= 0); + + r = chase(p, NULL, 0, &result, NULL); + assert_se(r > 0); + assert_se(path_equal(result, "/")); + result = mfree(result); + + r = chase(p, temp, 0, &result, NULL); + assert_se(r > 0); + assert_se(path_equal(result, temp)); + result = mfree(result); + + /* Paths that would "escape" outside of the "root" */ + + p = strjoina(temp, "/6dots"); + assert_se(symlink("../../..", p) >= 0); + + r = chase(p, temp, 0, &result, NULL); + assert_se(r > 0 && path_equal(result, temp)); + result = mfree(result); + + p = strjoina(temp, "/6dotsusr"); + assert_se(symlink("../../../usr", p) >= 0); + + r = chase(p, temp, 0, &result, NULL); + assert_se(r > 0 && path_equal(result, q)); + result = mfree(result); + + p = strjoina(temp, "/top/8dotsusr"); + assert_se(symlink("../../../../usr", p) >= 0); + + r = chase(p, temp, 0, &result, NULL); + assert_se(r > 0 && path_equal(result, q)); + result = mfree(result); + + /* Paths that contain repeated slashes */ + + p = strjoina(temp, "/slashslash"); + assert_se(symlink("///usr///", p) >= 0); + + r = chase(p, NULL, 0, &result, NULL); + assert_se(r > 0); + assert_se(path_equal(result, "/usr")); + assert_se(streq(result, "/usr")); /* we guarantee that we drop redundant slashes */ + result = mfree(result); + + r = chase(p, temp, 0, &result, NULL); + assert_se(r > 0); + assert_se(path_equal(result, q)); + result = mfree(result); + + /* Paths underneath the "root" with different UIDs while using CHASE_SAFE */ + + if (geteuid() == 0) { + p = strjoina(temp, "/user"); + assert_se(mkdir(p, 0755) >= 0); + assert_se(chown(p, UID_NOBODY, GID_NOBODY) >= 0); + + q = strjoina(temp, "/user/root"); + assert_se(mkdir(q, 0755) >= 0); + + p = strjoina(q, "/link"); + assert_se(symlink("/", p) >= 0); + + /* Fail when user-owned directories contain root-owned subdirectories. */ + r = chase(p, temp, CHASE_SAFE, &result, NULL); + assert_se(r == -ENOLINK); + result = mfree(result); + + /* Allow this when the user-owned directories are all in the "root". */ + r = chase(p, q, CHASE_SAFE, &result, NULL); + assert_se(r > 0); + result = mfree(result); + } + + /* Paths using . */ + + r = chase("/etc/./.././", NULL, 0, &result, NULL); + assert_se(r > 0); + assert_se(path_equal(result, "/")); + result = mfree(result); + + r = chase("/etc/./.././", "/etc", 0, &result, NULL); + assert_se(r > 0 && path_equal(result, "/etc")); + result = mfree(result); + + r = chase("/../.././//../../etc", NULL, 0, &result, NULL); + assert_se(r > 0); + assert_se(streq(result, "/etc")); + result = mfree(result); + + r = chase("/../.././//../../test-chase.fsldajfl", NULL, CHASE_NONEXISTENT, &result, NULL); + assert_se(r == 0); + assert_se(streq(result, "/test-chase.fsldajfl")); + result = mfree(result); + + r = chase("/../.././//../../etc", "/", CHASE_PREFIX_ROOT, &result, NULL); + assert_se(r > 0); + assert_se(streq(result, "/etc")); + result = mfree(result); + + r = chase("/../.././//../../test-chase.fsldajfl", "/", CHASE_PREFIX_ROOT|CHASE_NONEXISTENT, &result, NULL); + assert_se(r == 0); + assert_se(streq(result, "/test-chase.fsldajfl")); + result = mfree(result); + + r = chase("/etc/machine-id/foo", NULL, 0, &result, NULL); + assert_se(IN_SET(r, -ENOTDIR, -ENOENT)); + result = mfree(result); + + /* Path that loops back to self */ + + p = strjoina(temp, "/recursive-symlink"); + assert_se(symlink("recursive-symlink", p) >= 0); + r = chase(p, NULL, 0, &result, NULL); + assert_se(r == -ELOOP); + + /* Path which doesn't exist */ + + p = strjoina(temp, "/idontexist"); + r = chase(p, NULL, 0, &result, NULL); + assert_se(r == -ENOENT); + + r = chase(p, NULL, CHASE_NONEXISTENT, &result, NULL); + assert_se(r == 0); + assert_se(path_equal(result, p)); + result = mfree(result); + + p = strjoina(temp, "/idontexist/meneither"); + r = chase(p, NULL, 0, &result, NULL); + assert_se(r == -ENOENT); + + r = chase(p, NULL, CHASE_NONEXISTENT, &result, NULL); + assert_se(r == 0); + assert_se(path_equal(result, p)); + result = mfree(result); + + /* Relative paths */ + + assert_se(safe_getcwd(&pwd) >= 0); + + assert_se(chdir(temp) >= 0); + + p = "this/is/a/relative/path"; + r = chase(p, NULL, CHASE_NONEXISTENT, &result, NULL); + assert_se(r == 0); + + p = strjoina(temp, "/", p); + assert_se(path_equal(result, p)); + result = mfree(result); + + p = "this/is/a/relative/path"; + r = chase(p, temp, CHASE_NONEXISTENT, &result, NULL); + assert_se(r == 0); + + p = strjoina(temp, "/", p); + assert_se(path_equal(result, p)); + result = mfree(result); + + assert_se(chdir(pwd) >= 0); + + /* Path which doesn't exist, but contains weird stuff */ + + p = strjoina(temp, "/idontexist/.."); + r = chase(p, NULL, 0, &result, NULL); + assert_se(r == -ENOENT); + + r = chase(p, NULL, CHASE_NONEXISTENT, &result, NULL); + assert_se(r == -ENOENT); + + p = strjoina(temp, "/target"); + q = strjoina(temp, "/top"); + assert_se(symlink(q, p) >= 0); + p = strjoina(temp, "/target/idontexist"); + r = chase(p, NULL, 0, &result, NULL); + assert_se(r == -ENOENT); + + if (geteuid() == 0) { + p = strjoina(temp, "/priv1"); + assert_se(mkdir(p, 0755) >= 0); + + q = strjoina(p, "/priv2"); + assert_se(mkdir(q, 0755) >= 0); + + assert_se(chase(q, NULL, CHASE_SAFE, NULL, NULL) >= 0); + + assert_se(chown(q, UID_NOBODY, GID_NOBODY) >= 0); + assert_se(chase(q, NULL, CHASE_SAFE, NULL, NULL) >= 0); + + assert_se(chown(p, UID_NOBODY, GID_NOBODY) >= 0); + assert_se(chase(q, NULL, CHASE_SAFE, NULL, NULL) >= 0); + + assert_se(chown(q, 0, 0) >= 0); + assert_se(chase(q, NULL, CHASE_SAFE, NULL, NULL) == -ENOLINK); + + assert_se(rmdir(q) >= 0); + assert_se(symlink("/etc/passwd", q) >= 0); + assert_se(chase(q, NULL, CHASE_SAFE, NULL, NULL) == -ENOLINK); + + assert_se(chown(p, 0, 0) >= 0); + assert_se(chase(q, NULL, CHASE_SAFE, NULL, NULL) >= 0); + } + + p = strjoina(temp, "/machine-id-test"); + assert_se(symlink("/usr/../etc/./machine-id", p) >= 0); + + r = chase(p, NULL, 0, NULL, &pfd); + if (r != -ENOENT && sd_id128_get_machine(NULL) >= 0) { + _cleanup_close_ int fd = -EBADF; + sd_id128_t a, b; + + assert_se(pfd >= 0); + + fd = fd_reopen(pfd, O_RDONLY|O_CLOEXEC); + assert_se(fd >= 0); + safe_close(pfd); + + assert_se(id128_read_fd(fd, ID128_FORMAT_PLAIN, &a) >= 0); + assert_se(sd_id128_get_machine(&b) >= 0); + assert_se(sd_id128_equal(a, b)); + } + + assert_se(lstat(p, &st) >= 0); + r = chase_and_unlink(p, NULL, 0, 0, &result); + assert_se(r == 0); + assert_se(path_equal(result, p)); + result = mfree(result); + assert_se(lstat(p, &st) == -1 && errno == ENOENT); + + /* Test CHASE_NOFOLLOW */ + + p = strjoina(temp, "/target"); + q = strjoina(temp, "/symlink"); + assert_se(symlink(p, q) >= 0); + r = chase(q, NULL, CHASE_NOFOLLOW, &result, &pfd); + assert_se(r >= 0); + assert_se(pfd >= 0); + assert_se(path_equal(result, q)); + assert_se(fstat(pfd, &st) >= 0); + assert_se(S_ISLNK(st.st_mode)); + result = mfree(result); + pfd = safe_close(pfd); + + /* s1 -> s2 -> nonexistent */ + q = strjoina(temp, "/s1"); + assert_se(symlink("s2", q) >= 0); + p = strjoina(temp, "/s2"); + assert_se(symlink("nonexistent", p) >= 0); + r = chase(q, NULL, CHASE_NOFOLLOW, &result, &pfd); + assert_se(r >= 0); + assert_se(pfd >= 0); + assert_se(path_equal(result, q)); + assert_se(fstat(pfd, &st) >= 0); + assert_se(S_ISLNK(st.st_mode)); + result = mfree(result); + pfd = safe_close(pfd); + + /* Test CHASE_STEP */ + + p = strjoina(temp, "/start"); + r = chase(p, NULL, CHASE_STEP, &result, NULL); + assert_se(r == 0); + p = strjoina(temp, "/top/dot/dotdota"); + assert_se(streq(p, result)); + result = mfree(result); + + r = chase(p, NULL, CHASE_STEP, &result, NULL); + assert_se(r == 0); + p = strjoina(temp, "/top/dotdota"); + assert_se(streq(p, result)); + result = mfree(result); + + r = chase(p, NULL, CHASE_STEP, &result, NULL); + assert_se(r == 0); + p = strjoina(temp, "/top/../a"); + assert_se(streq(p, result)); + result = mfree(result); + + r = chase(p, NULL, CHASE_STEP, &result, NULL); + assert_se(r == 0); + p = strjoina(temp, "/a"); + assert_se(streq(p, result)); + result = mfree(result); + + r = chase(p, NULL, CHASE_STEP, &result, NULL); + assert_se(r == 0); + p = strjoina(temp, "/b"); + assert_se(streq(p, result)); + result = mfree(result); + + r = chase(p, NULL, CHASE_STEP, &result, NULL); + assert_se(r == 0); + assert_se(streq("/usr", result)); + result = mfree(result); + + r = chase("/usr", NULL, CHASE_STEP, &result, NULL); + assert_se(r > 0); + assert_se(streq("/usr", result)); + result = mfree(result); + + /* Make sure that symlinks in the "root" path are not resolved, but those below are */ + p = strjoina("/etc/..", temp, "/self"); + assert_se(symlink(".", p) >= 0); + q = strjoina(p, "/top/dot/dotdota"); + r = chase(q, p, 0, &result, NULL); + assert_se(r > 0); + assert_se(path_equal(path_startswith(result, p), "usr")); + result = mfree(result); + + /* Test CHASE_PROHIBIT_SYMLINKS */ + + assert_se(chase("top/dot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS, NULL, NULL) == -EREMCHG); + assert_se(chase("top/dot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS|CHASE_WARN, NULL, NULL) == -EREMCHG); + assert_se(chase("top/dotdot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS, NULL, NULL) == -EREMCHG); + assert_se(chase("top/dotdot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS|CHASE_WARN, NULL, NULL) == -EREMCHG); + assert_se(chase("top/dot/dot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS, NULL, NULL) == -EREMCHG); + assert_se(chase("top/dot/dot", temp, CHASE_PREFIX_ROOT|CHASE_PROHIBIT_SYMLINKS|CHASE_WARN, NULL, NULL) == -EREMCHG); + + cleanup: + assert_se(rm_rf(temp, REMOVE_ROOT|REMOVE_PHYSICAL) >= 0); +} + +TEST(chaseat) { + _cleanup_(rm_rf_physical_and_freep) char *t = NULL; + _cleanup_close_ int tfd = -EBADF, fd = -EBADF; + _cleanup_free_ char *result = NULL; + _cleanup_closedir_ DIR *dir = NULL; + _cleanup_fclose_ FILE *f = NULL; + struct stat st; + const char *p; + + assert_se((tfd = mkdtemp_open(NULL, 0, &t)) >= 0); + + /* Test that AT_FDCWD with CHASE_AT_RESOLVE_IN_ROOT resolves against / and not the current working + * directory. */ + + assert_se(symlinkat("/usr", tfd, "abc") >= 0); + + p = strjoina(t, "/abc"); + assert_se(chaseat(AT_FDCWD, p, CHASE_AT_RESOLVE_IN_ROOT, &result, NULL) >= 0); + assert_se(streq(result, "/usr")); + result = mfree(result); + + /* Test that absolute path or not are the same when resolving relative to a directory file + * descriptor and that we always get a relative path back. */ + + assert_se(fd = openat(tfd, "def", O_CREAT|O_CLOEXEC, 0700) >= 0); + fd = safe_close(fd); + assert_se(symlinkat("/def", tfd, "qed") >= 0); + assert_se(chaseat(tfd, "qed", CHASE_AT_RESOLVE_IN_ROOT, &result, NULL) >= 0); + assert_se(streq(result, "def")); + result = mfree(result); + assert_se(chaseat(tfd, "/qed", CHASE_AT_RESOLVE_IN_ROOT, &result, NULL) >= 0); + assert_se(streq(result, "def")); + result = mfree(result); + + /* Valid directory file descriptor without CHASE_AT_RESOLVE_IN_ROOT should resolve symlinks against + * host's root. */ + assert_se(chaseat(tfd, "/qed", 0, NULL, NULL) == -ENOENT); + + /* Test CHASE_PARENT */ + + assert_se((fd = open_mkdir_at(tfd, "chase", O_CLOEXEC, 0755)) >= 0); + assert_se(symlinkat("/def", fd, "parent") >= 0); + fd = safe_close(fd); + + /* Make sure that when we chase a symlink parent directory, that we chase the parent directory of the + * symlink target and not the symlink itself. But if we add CHASE_NOFOLLOW, we get the parent + * directory of the symlink itself. */ + + assert_se(chaseat(tfd, "chase/parent", CHASE_PARENT|CHASE_AT_RESOLVE_IN_ROOT, &result, &fd) >= 0); + assert_se(faccessat(fd, "def", F_OK, 0) >= 0); + assert_se(streq(result, "def")); + fd = safe_close(fd); + result = mfree(result); + + assert_se(chaseat(tfd, "chase/parent", CHASE_AT_RESOLVE_IN_ROOT|CHASE_PARENT|CHASE_NOFOLLOW, &result, &fd) >= 0); + assert_se(faccessat(fd, "parent", F_OK, AT_SYMLINK_NOFOLLOW) >= 0); + assert_se(streq(result, "chase/parent")); + fd = safe_close(fd); + result = mfree(result); + + assert_se(chaseat(tfd, "chase", CHASE_PARENT|CHASE_AT_RESOLVE_IN_ROOT, &result, &fd) >= 0); + assert_se(faccessat(fd, "chase", F_OK, 0) >= 0); + assert_se(streq(result, "chase")); + fd = safe_close(fd); + result = mfree(result); + + assert_se(chaseat(tfd, "/", CHASE_PARENT|CHASE_AT_RESOLVE_IN_ROOT, &result, NULL) >= 0); + assert_se(streq(result, ".")); + result = mfree(result); + + assert_se(chaseat(tfd, ".", CHASE_PARENT|CHASE_AT_RESOLVE_IN_ROOT, &result, NULL) >= 0); + assert_se(streq(result, ".")); + result = mfree(result); + + /* Test CHASE_MKDIR_0755 */ + + assert_se(chaseat(tfd, "m/k/d/i/r", CHASE_MKDIR_0755|CHASE_NONEXISTENT, &result, NULL) >= 0); + assert_se(faccessat(tfd, "m/k/d/i", F_OK, 0) >= 0); + assert_se(RET_NERRNO(faccessat(tfd, "m/k/d/i/r", F_OK, 0)) == -ENOENT); + assert_se(streq(result, "m/k/d/i/r")); + result = mfree(result); + + assert_se(chaseat(tfd, "m/../q", CHASE_MKDIR_0755|CHASE_NONEXISTENT, &result, NULL) >= 0); + assert_se(faccessat(tfd, "m", F_OK, 0) >= 0); + assert_se(RET_NERRNO(faccessat(tfd, "q", F_OK, 0)) == -ENOENT); + assert_se(streq(result, "q")); + result = mfree(result); + + assert_se(chaseat(tfd, "i/../p", CHASE_MKDIR_0755, NULL, NULL) == -ENOENT); + + /* Test CHASE_FILENAME */ + + assert_se(chaseat(tfd, "chase/parent", CHASE_AT_RESOLVE_IN_ROOT|CHASE_PARENT|CHASE_NOFOLLOW|CHASE_EXTRACT_FILENAME, &result, &fd) >= 0); + assert_se(faccessat(fd, result, F_OK, AT_SYMLINK_NOFOLLOW) >= 0); + assert_se(streq(result, "parent")); + fd = safe_close(fd); + result = mfree(result); + + assert_se(chaseat(tfd, "chase", CHASE_PARENT|CHASE_AT_RESOLVE_IN_ROOT|CHASE_EXTRACT_FILENAME, &result, &fd) >= 0); + assert_se(faccessat(fd, result, F_OK, 0) >= 0); + assert_se(streq(result, "chase")); + fd = safe_close(fd); + result = mfree(result); + + assert_se(chaseat(tfd, "/", CHASE_PARENT|CHASE_AT_RESOLVE_IN_ROOT|CHASE_EXTRACT_FILENAME, &result, NULL) >= 0); + assert_se(streq(result, ".")); + result = mfree(result); + + assert_se(chaseat(tfd, ".", CHASE_PARENT|CHASE_AT_RESOLVE_IN_ROOT|CHASE_EXTRACT_FILENAME, &result, NULL) >= 0); + assert_se(streq(result, ".")); + result = mfree(result); + + /* Test chase_and_openat() */ + + fd = chase_and_openat(tfd, "o/p/e/n/f/i/l/e", CHASE_MKDIR_0755, O_CREAT|O_EXCL|O_CLOEXEC, NULL); + assert_se(fd >= 0); + assert_se(fd_verify_regular(fd) >= 0); + fd = safe_close(fd); + + fd = chase_and_openat(tfd, "o/p/e/n/d/i/r", CHASE_MKDIR_0755, O_DIRECTORY|O_CREAT|O_EXCL|O_CLOEXEC, NULL); + assert_se(fd >= 0); + assert_se(fd_verify_directory(fd) >= 0); + fd = safe_close(fd); + + /* Test chase_and_openatdir() */ + + assert_se(chase_and_opendirat(tfd, "o/p/e/n/d/i", 0, &result, &dir) >= 0); + FOREACH_DIRENT(de, dir, assert_not_reached()) + assert_se(streq(de->d_name, "r")); + assert_se(streq(result, "o/p/e/n/d/i")); + result = mfree(result); + + /* Test chase_and_statat() */ + + assert_se(chase_and_statat(tfd, "o/p", 0, &result, &st) >= 0); + assert_se(stat_verify_directory(&st) >= 0); + assert_se(streq(result, "o/p")); + result = mfree(result); + + /* Test chase_and_accessat() */ + + assert_se(chase_and_accessat(tfd, "o/p/e", 0, F_OK, &result) >= 0); + assert_se(streq(result, "o/p/e")); + result = mfree(result); + + /* Test chase_and_fopenat_unlocked() */ + + assert_se(chase_and_fopenat_unlocked(tfd, "o/p/e/n/f/i/l/e", 0, "re", &result, &f) >= 0); + assert_se(fread(&(char[1]) {}, 1, 1, f) == 0); + assert_se(feof(f)); + f = safe_fclose(f); + assert_se(streq(result, "o/p/e/n/f/i/l/e")); + result = mfree(result); + + /* Test chase_and_unlinkat() */ + + assert_se(chase_and_unlinkat(tfd, "o/p/e/n/f/i/l/e", 0, 0, &result) >= 0); + assert_se(streq(result, "o/p/e/n/f/i/l/e")); + result = mfree(result); + + /* Test chase_and_open_parent_at() */ + + assert_se((fd = chase_and_open_parent_at(tfd, "chase/parent", CHASE_AT_RESOLVE_IN_ROOT|CHASE_NOFOLLOW, &result)) >= 0); + assert_se(faccessat(fd, result, F_OK, AT_SYMLINK_NOFOLLOW) >= 0); + assert_se(streq(result, "parent")); + fd = safe_close(fd); + result = mfree(result); + + assert_se((fd = chase_and_open_parent_at(tfd, "chase", CHASE_AT_RESOLVE_IN_ROOT, &result)) >= 0); + assert_se(faccessat(fd, result, F_OK, 0) >= 0); + assert_se(streq(result, "chase")); + fd = safe_close(fd); + result = mfree(result); + + assert_se((fd = chase_and_open_parent_at(tfd, "/", CHASE_AT_RESOLVE_IN_ROOT, &result)) >= 0); + assert_se(streq(result, ".")); + fd = safe_close(fd); + result = mfree(result); + + assert_se((fd = chase_and_open_parent_at(tfd, ".", CHASE_AT_RESOLVE_IN_ROOT, &result)) >= 0); + assert_se(streq(result, ".")); + fd = safe_close(fd); + result = mfree(result); +} + +static int intro(void) { + arg_test_dir = saved_argv[1]; + return EXIT_SUCCESS; +} + +DEFINE_TEST_MAIN_WITH_INTRO(LOG_INFO, intro); |