shared: Clean up includes

Split out of #37344.

src/shared/install.h

@@ -1,32 +1,19 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include <stdbool.h>
-
-typedef enum UnitFilePresetMode UnitFilePresetMode;
-typedef enum InstallChangeType InstallChangeType;
-typedef enum UnitFileFlags UnitFileFlags;
-typedef enum InstallMode InstallMode;
-typedef struct InstallChange InstallChange;
-typedef struct UnitFileList UnitFileList;
-typedef struct InstallInfo InstallInfo;
-
-#include "hashmap.h"
-#include "macro.h"
-#include "path-lookup.h"
-#include "strv.h"
+#include "forward.h"
+#include "runtime-scope.h"
 #include "unit-file.h"
-#include "unit-name.h"
 
-enum UnitFilePresetMode {
+typedef enum UnitFilePresetMode {
         UNIT_FILE_PRESET_FULL,
         UNIT_FILE_PRESET_ENABLE_ONLY,
         UNIT_FILE_PRESET_DISABLE_ONLY,
         _UNIT_FILE_PRESET_MODE_MAX,
         _UNIT_FILE_PRESET_MODE_INVALID = -EINVAL,
-};
+} UnitFilePresetMode;
 
-enum InstallChangeType {
+typedef enum InstallChangeType {
         INSTALL_CHANGE_SYMLINK,
         INSTALL_CHANGE_UNLINK,
         INSTALL_CHANGE_IS_MASKED,
@@ -37,31 +24,31 @@ enum InstallChangeType {
         _INSTALL_CHANGE_TYPE_MAX,
         _INSTALL_CHANGE_INVALID = -EINVAL,
         _INSTALL_CHANGE_ERRNO_MAX = -ERRNO_MAX, /* Ensure this type covers the whole negative errno range */
-};
+} InstallChangeType;
 
 static inline bool INSTALL_CHANGE_TYPE_VALID(InstallChangeType t) {
         return t >= _INSTALL_CHANGE_ERRNO_MAX && t < _INSTALL_CHANGE_TYPE_MAX;
 }
 
-enum UnitFileFlags {
+typedef enum UnitFileFlags {
         UNIT_FILE_RUNTIME                  = 1 << 0, /* Public API via DBUS, do not change */
         UNIT_FILE_FORCE                    = 1 << 1, /* Public API via DBUS, do not change */
         UNIT_FILE_PORTABLE                 = 1 << 2, /* Public API via DBUS, do not change */
         UNIT_FILE_DRY_RUN                  = 1 << 3,
         UNIT_FILE_IGNORE_AUXILIARY_FAILURE = 1 << 4,
         _UNIT_FILE_FLAGS_MASK_PUBLIC = UNIT_FILE_RUNTIME|UNIT_FILE_PORTABLE|UNIT_FILE_FORCE,
-};
+} UnitFileFlags;
 
 /* type can be either one of the INSTALL_CHANGE_SYMLINK, INSTALL_CHANGE_UNLINK, … listed above, or a negative
  * errno value.
  *
  * If source is specified, it should be the contents of the path symlink. In case of an error, source should
  * be the existing symlink contents or NULL. */
-struct InstallChange {
+typedef struct InstallChange {
         int type; /* INSTALL_CHANGE_SYMLINK, … if positive, errno if negative */
         char *path;
         char *source;
-};
+} InstallChange;
 
 static inline bool install_changes_have_modification(const InstallChange *changes, size_t n_changes) {
         FOREACH_ARRAY(i, changes, n_changes)
@@ -70,21 +57,21 @@ static inline bool install_changes_have_modification(const InstallChange *change
         return false;
 }
 
-struct UnitFileList {
+typedef struct UnitFileList {
         char *path;
         UnitFileState state;
-};
+} UnitFileList;
 
-enum InstallMode {
+typedef enum InstallMode {
         INSTALL_MODE_REGULAR,
         INSTALL_MODE_LINKED,
         INSTALL_MODE_ALIAS,
         INSTALL_MODE_MASKED,
         _INSTALL_MODE_MAX,
         _INSTALL_MODE_INVALID = -EINVAL,
-};
+} InstallMode;
 
-struct InstallInfo {
+typedef struct InstallInfo {
         char *name;
         char *path;
         char *root;
@@ -100,7 +87,7 @@ struct InstallInfo {
 
         InstallMode install_mode;
         bool auxiliary;
-};
+} InstallInfo;
 
 int unit_file_enable(
                 RuntimeScope scope,