import: introduce new mini-daemon systemd-importd, and make machinectl a client to it

The old "systemd-import" binary is now an internal tool. We still use it
as asynchronous backend for systemd-importd. Since the import tool might
require some IO and CPU resources (due to qcow2 explosion, and
decompression), and because we might want to run it with more minimal
priviliges we still keep it around as the worker binary to execute as
child process of importd.

machinectl now has verbs for pulling down images, cancelling them and
listing them.

1 files changed, 39 insertions, 0 deletions

diff --git a/src/import/import-common.h b/src/import/import-common.h
new file mode 100644
index 0000000000..39ac6acd08
--- /dev/null
+++ b/src/import/import-common.h
@@ -0,0 +1,39 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+  This file is part of systemd.
+
+  Copyright 2015 Lennart Poettering
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdbool.h>
+
+#include "import-job.h"
+#include "import-util.h"
+
+int import_make_local_copy(const char *final, const char *root, const char *local, bool force_local);
+
+int import_find_old_etags(const char *url, const char *root, int dt, const char *prefix, const char *suffix, char ***etags);
+
+int import_make_read_only_fd(int fd);
+int import_make_read_only(const char *path);
+
+int import_make_path(const char *url, const char *etag, const char *image_root, const char *prefix, const char *suffix, char **ret);
+
+int import_make_verification_jobs(ImportJob **ret_checksum_job, ImportJob **ret_signature_job, ImportVerify verify, const char *url, CurlGlue *glue, ImportJobFinished on_finished, void *userdata);
+int import_verify(ImportJob *main_job, ImportJob *checksum_job, ImportJob *signature_job);