basic,shared: move a bunch of files to src/shared/

The goal is to move everything that requires selinux or smack
away from src/basic/. This means that src/basic/label.[ch] must move,
which implies btrfs-util.[ch], copy.[ch], and a bunch of other files
which form a cluster of internal use.

This is just moving text around, so there should be no functional difference.

test-blockdev-util is new, because path_is_encrypted() is moved to
blockdev-util.c, and so far we didn't have any tests for code there.

1 files changed, 43 insertions, 0 deletions

diff --git a/src/test/test-blockdev-util.c b/src/test/test-blockdev-util.c
new file mode 100644
index 0000000000..ab5169c43a
--- /dev/null
+++ b/src/test/test-blockdev-util.c
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "blockdev-util.h"
+#include "errno-util.h"
+#include "tests.h"
+
+static void test_path_is_encrypted_one(const char *p, int expect) {
+        int r;
+
+        r = path_is_encrypted(p);
+        if (r == -ENOENT || ERRNO_IS_PRIVILEGE(r)) /* This might fail, if btrfs is used and we run in a
+                           * container. In that case we cannot resolve the device node paths that
+                           * BTRFS_IOC_DEV_INFO returns, because the device nodes are unlikely to exist in
+                           * the container. But if we can't stat() them we cannot determine the dev_t of
+                           * them, and thus cannot figure out if they are enrypted. Hence let's just ignore
+                           * ENOENT here. Also skip the test if we lack privileges. */
+                return;
+        assert_se(r >= 0);
+
+        log_info("%s encrypted: %s", p, yes_no(r));
+
+        assert_se(expect < 0 || ((r > 0) == (expect > 0)));
+}
+
+static void test_path_is_encrypted(void) {
+        int booted = sd_booted(); /* If this is run in build environments such as koji, /dev might be a
+                                   * reguar fs. Don't assume too much if not running under systemd. */
+
+        log_info("/* %s (sd_booted=%d) */", __func__, booted);
+
+        test_path_is_encrypted_one("/home", -1);
+        test_path_is_encrypted_one("/var", -1);
+        test_path_is_encrypted_one("/", -1);
+        test_path_is_encrypted_one("/proc", false);
+        test_path_is_encrypted_one("/sys", false);
+        test_path_is_encrypted_one("/dev", booted > 0 ? false : -1);
+}
+
+int main(int argc, char **argv) {
+        test_setup_logging(LOG_INFO);
+
+        test_path_is_encrypted();
+}