src/shared/path-lookup.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   Copyright 2010 Lennart Poettering
   6 ***/
   7
   8 #include <stdbool.h>
   9
  10 typedef struct LookupPaths LookupPaths;
  11
  12 #include "install.h"
  13 #include "macro.h"
  14
  15 typedef enum LookupPathsFlags {
  16         LOOKUP_PATHS_EXCLUDE_GENERATED   = 1 << 0,
  17         LOOKUP_PATHS_TEMPORARY_GENERATED = 1 << 1,
  18         LOOKUP_PATHS_SPLIT_USR           = 1 << 2,
  19 } LookupPathsFlags;
  20
  21 struct LookupPaths {
  22         /* Where we look for unit files. This includes the individual special paths below, but also any vendor
  23          * supplied, static unit file paths. */
  24         char **search_path;
  25
  26         /* Where we shall create or remove our installation symlinks, aka "configuration", and where the user/admin
  27          * shall place his own unit files. */
  28         char *persistent_config;
  29         char *runtime_config;
  30
  31         /* Where to place generated unit files (i.e. those a "generator" tool generated). Note the special semantics of
  32          * this directory: the generators are flushed each time a "systemctl daemon-reload" is issued. The user should
  33          * not alter these directories directly. */
  34         char *generator;
  35         char *generator_early;
  36         char *generator_late;
  37
  38         /* Where to place transient unit files (i.e. those created dynamically via the bus API). Note the special
  39          * semantics of this directory: all units created transiently have their unit files removed as the transient
  40          * unit is unloaded. The user should not alter this directory directly. */
  41         char *transient;
  42
  43         /* Where the snippets created by "systemctl set-property" are placed. Note that for transient units, the
  44          * snippets are placed in the transient directory though (see above). The user should not alter this directory
  45          * directly. */
  46         char *persistent_control;
  47         char *runtime_control;
  48
  49         /* The root directory prepended to all items above, or NULL */
  50         char *root_dir;
  51
  52         /* A temporary directory when running in test mode, to be nuked */
  53         char *temporary_dir;
  54 };
  55
  56 int lookup_paths_init(LookupPaths *p, UnitFileScope scope, LookupPathsFlags flags, const char *root_dir);
  57 int xdg_user_dirs(char ***ret_config_dirs, char ***ret_data_dirs);
  58 int xdg_user_runtime_dir(char **ret, const char *suffix);
  59 int xdg_user_config_dir(char **ret, const char *suffix);
  60 int xdg_user_data_dir(char **ret, const char *suffix);
  61 bool path_is_user_data_dir(const char *path);
  62 bool path_is_user_config_dir(const char *path);
  63
  64 int lookup_paths_reduce(LookupPaths *p);
  65
  66 int lookup_paths_mkdir_generator(LookupPaths *p);
  67 void lookup_paths_trim_generator(LookupPaths *p);
  68 void lookup_paths_flush_generator(LookupPaths *p);
  69
  70 void lookup_paths_free(LookupPaths *p);
  71
  72 char **generator_binary_paths(UnitFileScope scope);