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-rw-r--r--src/shared/install.h230
1 files changed, 230 insertions, 0 deletions
diff --git a/src/shared/install.h b/src/shared/install.h
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index 0000000..e452940
--- /dev/null
+++ b/src/shared/install.h
@@ -0,0 +1,230 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+#pragma once
+
+typedef enum UnitFileScope UnitFileScope;
+typedef enum UnitFileState UnitFileState;
+typedef enum UnitFilePresetMode UnitFilePresetMode;
+typedef enum UnitFileChangeType UnitFileChangeType;
+typedef enum UnitFileFlags UnitFileFlags;
+typedef enum UnitFileType UnitFileType;
+typedef struct UnitFileChange UnitFileChange;
+typedef struct UnitFileList UnitFileList;
+typedef struct UnitFileInstallInfo UnitFileInstallInfo;
+
+#include <stdbool.h>
+
+#include "hashmap.h"
+#include "macro.h"
+#include "path-lookup.h"
+#include "strv.h"
+#include "unit-name.h"
+
+enum UnitFileScope {
+ UNIT_FILE_SYSTEM,
+ UNIT_FILE_GLOBAL,
+ UNIT_FILE_USER,
+ _UNIT_FILE_SCOPE_MAX,
+ _UNIT_FILE_SCOPE_INVALID = -1
+};
+
+enum UnitFileState {
+ UNIT_FILE_ENABLED,
+ UNIT_FILE_ENABLED_RUNTIME,
+ UNIT_FILE_LINKED,
+ UNIT_FILE_LINKED_RUNTIME,
+ UNIT_FILE_MASKED,
+ UNIT_FILE_MASKED_RUNTIME,
+ UNIT_FILE_STATIC,
+ UNIT_FILE_DISABLED,
+ UNIT_FILE_INDIRECT,
+ UNIT_FILE_GENERATED,
+ UNIT_FILE_TRANSIENT,
+ UNIT_FILE_BAD,
+ _UNIT_FILE_STATE_MAX,
+ _UNIT_FILE_STATE_INVALID = -1
+};
+
+enum UnitFilePresetMode {
+ UNIT_FILE_PRESET_FULL,
+ UNIT_FILE_PRESET_ENABLE_ONLY,
+ UNIT_FILE_PRESET_DISABLE_ONLY,
+ _UNIT_FILE_PRESET_MAX,
+ _UNIT_FILE_PRESET_INVALID = -1
+};
+
+enum UnitFileChangeType {
+ UNIT_FILE_SYMLINK,
+ UNIT_FILE_UNLINK,
+ UNIT_FILE_IS_MASKED,
+ UNIT_FILE_IS_DANGLING,
+ _UNIT_FILE_CHANGE_TYPE_MAX,
+ _UNIT_FILE_CHANGE_TYPE_INVALID = INT_MIN
+};
+
+enum UnitFileFlags {
+ UNIT_FILE_RUNTIME = 1 << 0,
+ UNIT_FILE_FORCE = 1 << 1,
+ UNIT_FILE_DRY_RUN = 1 << 2,
+};
+
+/* type can either one of the UnitFileChangeTypes listed above, or a negative error.
+ * 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 UnitFileChange {
+ int type; /* UnitFileChangeType or bust */
+ char *path;
+ char *source;
+};
+
+static inline bool unit_file_changes_have_modification(const UnitFileChange* changes, size_t n_changes) {
+ size_t i;
+ for (i = 0; i < n_changes; i++)
+ if (IN_SET(changes[i].type, UNIT_FILE_SYMLINK, UNIT_FILE_UNLINK))
+ return true;
+ return false;
+}
+
+struct UnitFileList {
+ char *path;
+ UnitFileState state;
+};
+
+enum UnitFileType {
+ UNIT_FILE_TYPE_REGULAR,
+ UNIT_FILE_TYPE_SYMLINK,
+ UNIT_FILE_TYPE_MASKED,
+ _UNIT_FILE_TYPE_MAX,
+ _UNIT_FILE_TYPE_INVALID = -1,
+};
+
+struct UnitFileInstallInfo {
+ char *name;
+ char *path;
+
+ char **aliases;
+ char **wanted_by;
+ char **required_by;
+ char **also;
+
+ char *default_instance;
+ char *symlink_target;
+
+ UnitFileType type;
+ bool auxiliary;
+};
+
+bool unit_type_may_alias(UnitType type) _const_;
+bool unit_type_may_template(UnitType type) _const_;
+
+int unit_file_enable(
+ UnitFileScope scope,
+ UnitFileFlags flags,
+ const char *root_dir,
+ char **files,
+ UnitFileChange **changes,
+ size_t *n_changes);
+int unit_file_disable(
+ UnitFileScope scope,
+ UnitFileFlags flags,
+ const char *root_dir,
+ char **files,
+ UnitFileChange **changes,
+ size_t *n_changes);
+int unit_file_reenable(
+ UnitFileScope scope,
+ UnitFileFlags flags,
+ const char *root_dir,
+ char **files,
+ UnitFileChange **changes,
+ size_t *n_changes);
+int unit_file_preset(
+ UnitFileScope scope,
+ UnitFileFlags flags,
+ const char *root_dir,
+ char **files,
+ UnitFilePresetMode mode,
+ UnitFileChange **changes,
+ size_t *n_changes);
+int unit_file_preset_all(
+ UnitFileScope scope,
+ UnitFileFlags flags,
+ const char *root_dir,
+ UnitFilePresetMode mode,
+ UnitFileChange **changes,
+ size_t *n_changes);
+int unit_file_mask(
+ UnitFileScope scope,
+ UnitFileFlags flags,
+ const char *root_dir,
+ char **files,
+ UnitFileChange **changes,
+ size_t *n_changes);
+int unit_file_unmask(
+ UnitFileScope scope,
+ UnitFileFlags flags,
+ const char *root_dir,
+ char **files,
+ UnitFileChange **changes,
+ size_t *n_changes);
+int unit_file_link(
+ UnitFileScope scope,
+ UnitFileFlags flags,
+ const char *root_dir,
+ char **files,
+ UnitFileChange **changes,
+ size_t *n_changes);
+int unit_file_revert(
+ UnitFileScope scope,
+ const char *root_dir,
+ char **files,
+ UnitFileChange **changes,
+ size_t *n_changes);
+int unit_file_set_default(
+ UnitFileScope scope,
+ UnitFileFlags flags,
+ const char *root_dir,
+ const char *file,
+ UnitFileChange **changes,
+ size_t *n_changes);
+int unit_file_get_default(
+ UnitFileScope scope,
+ const char *root_dir,
+ char **name);
+int unit_file_add_dependency(
+ UnitFileScope scope,
+ UnitFileFlags flags,
+ const char *root_dir,
+ char **files,
+ const char *target,
+ UnitDependency dep,
+ UnitFileChange **changes,
+ size_t *n_changes);
+
+int unit_file_lookup_state(
+ UnitFileScope scope,
+ const LookupPaths *paths,
+ const char *name,
+ UnitFileState *ret);
+
+int unit_file_get_state(UnitFileScope scope, const char *root_dir, const char *filename, UnitFileState *ret);
+int unit_file_exists(UnitFileScope scope, const LookupPaths *paths, const char *name);
+
+int unit_file_get_list(UnitFileScope scope, const char *root_dir, Hashmap *h, char **states, char **patterns);
+Hashmap* unit_file_list_free(Hashmap *h);
+
+int unit_file_changes_add(UnitFileChange **changes, size_t *n_changes, UnitFileChangeType type, const char *path, const char *source);
+void unit_file_changes_free(UnitFileChange *changes, size_t n_changes);
+void unit_file_dump_changes(int r, const char *verb, const UnitFileChange *changes, size_t n_changes, bool quiet);
+
+int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char *name);
+
+const char *unit_file_state_to_string(UnitFileState s) _const_;
+UnitFileState unit_file_state_from_string(const char *s) _pure_;
+/* from_string conversion is unreliable because of the overlap between -EPERM and -1 for error. */
+
+const char *unit_file_change_type_to_string(UnitFileChangeType s) _const_;
+UnitFileChangeType unit_file_change_type_from_string(const char *s) _pure_;
+
+const char *unit_file_preset_mode_to_string(UnitFilePresetMode m) _const_;
+UnitFilePresetMode unit_file_preset_mode_from_string(const char *s) _pure_;