- /* Sanity checks of failures. Mingw lacks symlinkat, but readlinkat
- can still distinguish between various errors. */
- errno = 0;
- ASSERT (readlinkat (AT_FDCWD, "no_such", buf, sizeof buf) == -1);
- ASSERT (errno == ENOENT);
- errno = 0;
- ASSERT (readlinkat (dfd, "no_such", buf, sizeof buf) == -1);
- ASSERT (errno == ENOENT);
- errno = 0;
- ASSERT (readlinkat (AT_FDCWD, "", buf, sizeof buf) == -1);
- ASSERT (errno == ENOENT);
- errno = 0;
- ASSERT (readlinkat (dfd, "", buf, sizeof buf) == -1);
- ASSERT (errno == ENOENT);
- errno = 0;
- ASSERT (readlinkat (AT_FDCWD, ".", buf, sizeof buf) == -1);
- ASSERT (errno == EINVAL);
- errno = 0;
- ASSERT (readlinkat (dfd, ".", buf, sizeof buf) == -1);
- ASSERT (errno == EINVAL);
- errno = 0;
- ASSERT (symlinkat ("who cares", AT_FDCWD, "") == -1);
- ASSERT (errno == ENOENT || errno == ENOSYS);
- errno = 0;
- ASSERT (symlinkat ("who cares", dfd, "") == -1);
- ASSERT (errno == ENOENT || errno == ENOSYS);
-
- /* Skip everything else on mingw. */
- if (HAVE_SYMLINK)
- {
- const char *linkname = "test-symlinkat.link";
- const char *contents = "don't matter!";
- int exp = strlen (contents);
-
- /* Create link while cwd is '.', then read it in '..'. */
- ASSERT (symlinkat (contents, AT_FDCWD, linkname) == 0);
- errno = 0;
- ASSERT (symlinkat (contents, dfd, linkname) == -1);
- ASSERT (errno == EEXIST);
- ASSERT (chdir ("..") == 0);
- errno = 0;
- ASSERT (readlinkat (AT_FDCWD, linkname, buf, sizeof buf) == -1);
- ASSERT (errno == ENOENT);
- ASSERT (readlinkat (dfd, linkname, buf, sizeof buf) == exp);
- ASSERT (strncmp (contents, buf, exp) == 0);
- ASSERT (unlinkat (dfd, linkname, 0) == 0);
-
- /* Create link while cwd is '..', then read it in '.'. */
- ASSERT (symlinkat (contents, dfd, linkname) == 0);
- ASSERT (fchdir (dfd) == 0);
- errno = 0;
- ASSERT (symlinkat (contents, AT_FDCWD, linkname) == -1);
- ASSERT (errno == EEXIST);
- buf[0] = '\0';
- ASSERT (readlinkat (AT_FDCWD, linkname, buf, sizeof buf) == exp);
- ASSERT (strncmp (contents, buf, exp) == 0);
- buf[0] = '\0';
- ASSERT (readlinkat (dfd, linkname, buf, sizeof buf) == exp);
- ASSERT (strncmp (contents, buf, exp) == 0);
- ASSERT (unlink (linkname) == 0);
- }