1 files changed, 103 insertions, 0 deletions
diff --git a/src/libsystemd-shared/include/systemd-shared/machine-image.h b/src/libsystemd-shared/include/systemd-shared/machine-image.h
new file mode 100644
index 0000000000..7c46fd6996
--- /dev/null
+++ b/src/libsystemd-shared/include/systemd-shared/machine-image.h
@@ -0,0 +1,103 @@
+#pragma once
+
+/***
+  This file is part of systemd.
+
+  Copyright 2014 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 <stdint.h>
+
+#include "systemd-basic/hashmap.h"
+#include "systemd-basic/lockfile-util.h"
+#include "systemd-basic/macro.h"
+#include "systemd-basic/path-util.h"
+#include "systemd-basic/string-util.h"
+#include "systemd-basic/time-util.h"
+
+typedef enum ImageType {
+        IMAGE_DIRECTORY,
+        IMAGE_SUBVOLUME,
+        IMAGE_RAW,
+        _IMAGE_TYPE_MAX,
+        _IMAGE_TYPE_INVALID = -1
+} ImageType;
+
+typedef struct Image {
+        ImageType type;
+        char *name;
+        char *path;
+        bool read_only;
+
+        usec_t crtime;
+        usec_t mtime;
+
+        uint64_t usage;
+        uint64_t usage_exclusive;
+        uint64_t limit;
+        uint64_t limit_exclusive;
+
+        void *userdata;
+} Image;
+
+Image *image_unref(Image *i);
+void image_hashmap_free(Hashmap *map);
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(Image*, image_unref);
+DEFINE_TRIVIAL_CLEANUP_FUNC(Hashmap*, image_hashmap_free);
+
+int image_find(const char *name, Image **ret);
+int image_discover(Hashmap *map);
+
+int image_remove(Image *i);
+int image_rename(Image *i, const char *new_name);
+int image_clone(Image *i, const char *new_name, bool read_only);
+int image_read_only(Image *i, bool b);
+
+const char* image_type_to_string(ImageType t) _const_;
+ImageType image_type_from_string(const char *s) _pure_;
+
+bool image_name_is_valid(const char *s) _pure_;
+
+int image_path_lock(const char *path, int operation, LockFile *global, LockFile *local);
+int image_name_lock(const char *name, int operation, LockFile *ret);
+
+int image_set_limit(Image *i, uint64_t referenced_max);
+
+static inline bool IMAGE_IS_HIDDEN(const struct Image *i) {
+        assert(i);
+
+        return i->name && i->name[0] == '.';
+}
+
+static inline bool IMAGE_IS_VENDOR(const struct Image *i) {
+        assert(i);
+
+        return i->path && path_startswith(i->path, "/usr");
+}
+
+static inline bool IMAGE_IS_HOST(const struct Image *i) {
+        assert(i);
+
+        if (i->name && streq(i->name, ".host"))
+                return true;
+
+        if (i->path && path_equal(i->path, "/"))
+                return true;
+
+        return false;
+}