44 	int dir_fd, fd;  in kernel_thread_fd()  local
56 	fd = openat(dir_fd, "stat", O_RDONLY);  in kernel_thread_fd()
57 	if (fd == -1) {  in kernel_thread_fd()
61 	rv = read(fd, buf, sizeof(buf));  in kernel_thread_fd()
62 	close(fd);  in kernel_thread_fd()
88 	fd = -1;  in kernel_thread_fd()
90 		fd = openat(dir_fd, "fd", O_RDONLY|O_DIRECTORY);  in kernel_thread_fd()
93 	return fd;  in kernel_thread_fd()
96 static void test_readdir(int fd)  in test_readdir()  argument
101 	d = fdopendir(fd);  in test_readdir()
122 static void test_lookup_fail(int fd, const char *pathname)  in test_lookup_fail()  argument
127 	rv = sys_statx(fd, pathname, AT_SYMLINK_NOFOLLOW, 0, (void *)stx);  in test_lookup_fail()
131 static void test_lookup(int fd)  in test_lookup()  argument
139 		test_lookup_fail(fd, buf);  in test_lookup()
143 		test_lookup_fail(fd, buf);  in test_lookup()
147 		test_lookup_fail(fd, buf);  in test_lookup()
151 		test_lookup_fail(fd, buf);  in test_lookup()
158 	int fd;  in main()  local
167 	while ((fd = kernel_thread_fd(pid)) == -1 && pid < 1024) {  in main()
174 	test_readdir(fd);  in main()
175 	test_lookup(fd);  in main()