+ unixsockp = strjoina(copy_dir, "unixsock");
+ assert_se(stat(unixsockp, &st) >= 0);
+ assert_se(S_ISSOCK(st.st_mode));
+
+ assert_se(copy_tree(original_dir, copy_dir, UID_INVALID, GID_INVALID, COPY_REFLINK) < 0);
+ assert_se(copy_tree("/tmp/inexistent/foo/bar/fsdoi", copy_dir, UID_INVALID, GID_INVALID, COPY_REFLINK) < 0);
+
+ (void) rm_rf(copy_dir, REMOVE_ROOT|REMOVE_PHYSICAL);
+ (void) rm_rf(original_dir, REMOVE_ROOT|REMOVE_PHYSICAL);
+}
+#endif // 0
+
+static void test_copy_bytes(void) {
+ _cleanup_close_pair_ int pipefd[2] = {-1, -1};
+ _cleanup_close_ int infd = -1;
+ int r, r2;
+ char buf[1024], buf2[1024];
+
+ infd = open("/usr/lib/os-release", O_RDONLY|O_CLOEXEC);
+ if (infd < 0)
+ infd = open("/etc/os-release", O_RDONLY|O_CLOEXEC);
+ assert_se(infd >= 0);
+
+ assert_se(pipe2(pipefd, O_CLOEXEC) == 0);
+
+ r = copy_bytes(infd, pipefd[1], (uint64_t) -1, 0);
+ assert_se(r == 0);
+
+ r = read(pipefd[0], buf, sizeof(buf));
+ assert_se(r >= 0);
+
+ assert_se(lseek(infd, 0, SEEK_SET) == 0);
+ r2 = read(infd, buf2, sizeof(buf2));
+ assert_se(r == r2);
+
+ assert_se(strneq(buf, buf2, r));
+
+ /* test copy_bytes with invalid descriptors */
+ r = copy_bytes(pipefd[0], pipefd[0], 1, 0);
+ assert_se(r == -EBADF);
+
+ r = copy_bytes(pipefd[1], pipefd[1], 1, 0);
+ assert_se(r == -EBADF);
+
+ r = copy_bytes(pipefd[1], infd, 1, 0);
+ assert_se(r == -EBADF);
+}
+
+static void test_copy_bytes_regular_file(const char *src, bool try_reflink, uint64_t max_bytes) {
+ char fn2[] = "/tmp/test-copy-file-XXXXXX";
+ char fn3[] = "/tmp/test-copy-file-XXXXXX";
+ _cleanup_close_ int fd = -1, fd2 = -1, fd3 = -1;
+ int r;
+ struct stat buf, buf2, buf3;
+
+ log_info("%s try_reflink=%s max_bytes=%" PRIu64, __func__, yes_no(try_reflink), max_bytes);
+
+ fd = open(src, O_RDONLY | O_CLOEXEC | O_NOCTTY);
+ assert_se(fd >= 0);
+
+ fd2 = mkostemp_safe(fn2);
+ assert_se(fd2 >= 0);
+
+ fd3 = mkostemp_safe(fn3);
+ assert_se(fd3 >= 0);
+
+ r = copy_bytes(fd, fd2, max_bytes, try_reflink ? COPY_REFLINK : 0);
+ if (max_bytes == (uint64_t) -1)
+ assert_se(r == 0);
+ else
+ assert_se(IN_SET(r, 0, 1));
+
+ assert_se(lseek(fd2, 0, SEEK_SET) == 0);
+
+ r = copy_bytes(fd2, fd3, max_bytes, try_reflink ? COPY_REFLINK : 0);
+ if (max_bytes == (uint64_t) -1)
+ assert_se(r == 0);
+ else
+ /* We cannot distinguish between the input being exactly max_bytes
+ * or longer than max_bytes (without trying to read one more byte,
+ * or calling stat, or FION_READ, etc, and we don't want to do any
+ * of that). So we expect "truncation" since we know that file we
+ * are copying is exactly max_bytes bytes. */
+ assert_se(r == 1);
+
+ assert_se(fstat(fd, &buf) == 0);
+ assert_se(fstat(fd2, &buf2) == 0);
+ assert_se(fstat(fd3, &buf3) == 0);
+
+ assert_se((uint64_t) buf2.st_size == MIN((uint64_t) buf.st_size, max_bytes));
+ assert_se(buf3.st_size == buf2.st_size);