src/basic/path-lookup.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 #pragma once
   3
   4 #include <stdbool.h>
   5
   6 typedef struct LookupPaths LookupPaths;
   7
   8 #include "def.h"
   9 #include "unit-file.h"
  10 #include "macro.h"
  11
  12 typedef enum LookupPathsFlags {
  13         LOOKUP_PATHS_EXCLUDE_GENERATED   = 1 << 0,
  14         LOOKUP_PATHS_TEMPORARY_GENERATED = 1 << 1,
  15         LOOKUP_PATHS_SPLIT_USR           = 1 << 2,
  16 } LookupPathsFlags;
  17
  18 struct LookupPaths {
  19         /* Where we look for unit files. This includes the individual special paths below, but also any vendor
  20          * supplied, static unit file paths. */
  21         char **search_path;
  22
  23         /* Where we shall create or remove our installation symlinks, aka "configuration", and where the user/admin
  24          * shall place their own unit files. */
  25         char *persistent_config;
  26         char *runtime_config;
  27
  28         /* Where units from a portable service image shall be placed. */
  29         char *persistent_attached;
  30         char *runtime_attached;
  31
  32         /* Where to place generated unit files (i.e. those a "generator" tool generated). Note the special semantics of
  33          * this directory: the generators are flushed each time a "systemctl daemon-reload" is issued. The user should
  34          * not alter these directories directly. */
  35         char *generator;
  36         char *generator_early;
  37         char *generator_late;
  38
  39         /* Where to place transient unit files (i.e. those created dynamically via the bus API). Note the special
  40          * semantics of this directory: all units created transiently have their unit files removed as the transient
  41          * unit is unloaded. The user should not alter this directory directly. */
  42         char *transient;
  43
  44         /* Where the snippets created by "systemctl set-property" are placed. Note that for transient units, the
  45          * snippets are placed in the transient directory though (see above). The user should not alter this directory
  46          * directly. */
  47         char *persistent_control;
  48         char *runtime_control;
  49
  50         /* The root directory prepended to all items above, or NULL */
  51         char *root_dir;
  52
  53         /* A temporary directory when running in test mode, to be nuked */
  54         char *temporary_dir;
  55 };
  56
  57 int lookup_paths_init(LookupPaths *p, UnitFileScope scope, LookupPathsFlags flags, const char *root_dir);
  58
  59 int xdg_user_dirs(char ***ret_config_dirs, char ***ret_data_dirs);
  60 int xdg_user_runtime_dir(char **ret, const char *suffix);
  61 int xdg_user_config_dir(char **ret, const char *suffix);
  62 int xdg_user_data_dir(char **ret, const char *suffix);
  63
  64 bool path_is_user_data_dir(const char *path);
  65 bool path_is_user_config_dir(const char *path);
  66
  67 void lookup_paths_log(LookupPaths *p);
  68 void lookup_paths_free(LookupPaths *p);
  69
  70 char **generator_binary_paths(UnitFileScope scope);
  71 char **env_generator_binary_paths(bool is_system);
  72
  73 #define NETWORK_DIRS ((const char* const*) CONF_PATHS_STRV("systemd/network"))
  74 #define NETWORK_DIRS_NULSTR CONF_PATHS_NULSTR("systemd/network")