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diff --git a/src/libshared/include/shared/path-lookup.h b/src/libshared/include/shared/path-lookup.h
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+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2010 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 "basic/macro.h"
+
+typedef struct LookupPaths LookupPaths;
+
+#include "install.h"
+
+typedef enum LookupPathsFlags {
+ LOOKUP_PATHS_EXCLUDE_GENERATED = 1,
+} LookupPathsFlags;
+
+struct LookupPaths {
+ /* Where we look for unit files. This includes the individual special paths below, but also any vendor
+ * supplied, static unit file paths. */
+ char **search_path;
+
+ /* Where we shall create or remove our installation symlinks, aka "configuration", and where the user/admin
+ * shall place his own unit files. */
+ char *persistent_config;
+ char *runtime_config;
+
+ /* Where to place generated unit files (i.e. those a "generator" tool generated). Note the special semantics of
+ * this directory: the generators are flushed each time a "systemctl daemon-reload" is issued. The user should
+ * not alter these directories directly. */
+ char *generator;
+ char *generator_early;
+ char *generator_late;
+
+ /* Where to place transient unit files (i.e. those created dynamically via the bus API). Note the special
+ * semantics of this directory: all units created transiently have their unit files removed as the transient
+ * unit is unloaded. The user should not alter this directory directly. */
+ char *transient;
+
+ /* Where the snippets created by "systemctl set-property" are placed. Note that for transient units, the
+ * snippets are placed in the transient directory though (see above). The user should not alter this directory
+ * directly. */
+ char *persistent_control;
+ char *runtime_control;
+
+ /* The root directory prepended to all items above, or NULL */
+ char *root_dir;
+};
+
+int lookup_paths_init(LookupPaths *p, UnitFileScope scope, LookupPathsFlags flags, const char *root_dir);
+
+int lookup_paths_reduce(LookupPaths *p);
+
+int lookup_paths_mkdir_generator(LookupPaths *p);
+void lookup_paths_trim_generator(LookupPaths *p);
+void lookup_paths_flush_generator(LookupPaths *p);
+
+void lookup_paths_free(LookupPaths *p);
+#define _cleanup_lookup_paths_free_ _cleanup_(lookup_paths_free)
+
+char **generator_binary_paths(UnitFileScope scope);