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/* 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 "unit-file.h"
#include "unit-name.h"
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,
};
enum InstallChangeType {
INSTALL_CHANGE_SYMLINK,
INSTALL_CHANGE_UNLINK,
INSTALL_CHANGE_IS_MASKED,
INSTALL_CHANGE_IS_MASKED_GENERATOR,
INSTALL_CHANGE_IS_DANGLING,
INSTALL_CHANGE_DESTINATION_NOT_PRESENT,
INSTALL_CHANGE_AUXILIARY_FAILED,
_INSTALL_CHANGE_TYPE_MAX,
_INSTALL_CHANGE_INVALID = -EINVAL,
_INSTALL_CHANGE_ERRNO_MAX = -ERRNO_MAX, /* Ensure this type covers the whole negative errno range */
};
static inline bool INSTALL_CHANGE_TYPE_VALID(InstallChangeType t) {
return t >= _INSTALL_CHANGE_ERRNO_MAX && t < _INSTALL_CHANGE_TYPE_MAX;
}
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,
};
/* 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 {
int type; /* INSTALL_CHANGE_SYMLINK, … if positive, errno if negative */
char *path;
char *source;
};
static inline bool install_changes_have_modification(const InstallChange* changes, size_t n_changes) {
for (size_t i = 0; i < n_changes; i++)
if (IN_SET(changes[i].type, INSTALL_CHANGE_SYMLINK, INSTALL_CHANGE_UNLINK))
return true;
return false;
}
struct UnitFileList {
char *path;
UnitFileState state;
};
enum InstallMode {
INSTALL_MODE_REGULAR,
INSTALL_MODE_LINKED,
INSTALL_MODE_ALIAS,
INSTALL_MODE_MASKED,
_INSTALL_MODE_MAX,
_INSTALL_MODE_INVALID = -EINVAL,
};
struct InstallInfo {
char *name;
char *path;
char *root;
char **aliases;
char **wanted_by;
char **required_by;
char **upheld_by;
char **also;
char *default_instance;
char *symlink_target;
InstallMode install_mode;
bool auxiliary;
};
int unit_file_enable(
RuntimeScope scope,
UnitFileFlags flags,
const char *root_dir,
char **names_or_paths,
InstallChange **changes,
size_t *n_changes);
int unit_file_disable(
RuntimeScope scope,
UnitFileFlags flags,
const char *root_dir,
char **names,
InstallChange **changes,
size_t *n_changes);
int unit_file_reenable(
RuntimeScope scope,
UnitFileFlags flags,
const char *root_dir,
char **names_or_paths,
InstallChange **changes,
size_t *n_changes);
int unit_file_preset(
RuntimeScope scope,
UnitFileFlags flags,
const char *root_dir,
char **names,
UnitFilePresetMode mode,
InstallChange **changes,
size_t *n_changes);
int unit_file_preset_all(
RuntimeScope scope,
UnitFileFlags flags,
const char *root_dir,
UnitFilePresetMode mode,
InstallChange **changes,
size_t *n_changes);
int unit_file_mask(
RuntimeScope scope,
UnitFileFlags flags,
const char *root_dir,
char **names,
InstallChange **changes,
size_t *n_changes);
int unit_file_unmask(
RuntimeScope scope,
UnitFileFlags flags,
const char *root_dir,
char **names,
InstallChange **changes,
size_t *n_changes);
int unit_file_link(
RuntimeScope scope,
UnitFileFlags flags,
const char *root_dir,
char **files,
InstallChange **changes,
size_t *n_changes);
int unit_file_revert(
RuntimeScope scope,
const char *root_dir,
char **names,
InstallChange **changes,
size_t *n_changes);
int unit_file_set_default(
RuntimeScope scope,
UnitFileFlags flags,
const char *root_dir,
const char *name,
InstallChange **changes,
size_t *n_changes);
int unit_file_get_default(
RuntimeScope scope,
const char *root_dir,
char **name);
int unit_file_add_dependency(
RuntimeScope scope,
UnitFileFlags flags,
const char *root_dir,
char **names,
const char *target,
UnitDependency dep,
InstallChange **changes,
size_t *n_changes);
int unit_file_lookup_state(
RuntimeScope scope,
const LookupPaths *paths,
const char *name,
UnitFileState *ret);
int unit_file_get_state(RuntimeScope scope, const char *root_dir, const char *filename, UnitFileState *ret);
int unit_file_exists(RuntimeScope scope, const LookupPaths *paths, const char *name);
int unit_file_get_list(RuntimeScope scope, const char *root_dir, Hashmap *h, char **states, char **patterns);
extern const struct hash_ops unit_file_list_hash_ops_free;
InstallChangeType install_changes_add(InstallChange **changes, size_t *n_changes, InstallChangeType type, const char *path, const char *source);
void install_changes_free(InstallChange *changes, size_t n_changes);
void install_changes_dump(int r, const char *verb, const InstallChange *changes, size_t n_changes, bool quiet);
int unit_file_verify_alias(
const InstallInfo *info,
const char *dst,
char **ret_dst,
InstallChange **changes,
size_t *n_changes);
typedef struct UnitFilePresetRule UnitFilePresetRule;
typedef struct {
UnitFilePresetRule *rules;
size_t n_rules;
bool initialized;
} UnitFilePresets;
typedef enum PresetAction {
PRESET_UNKNOWN,
PRESET_ENABLE,
PRESET_DISABLE,
PRESET_IGNORE,
_PRESET_ACTION_MAX,
_PRESET_ACTION_INVALID = -EINVAL,
_PRESET_ACTION_ERRNO_MAX = -ERRNO_MAX, /* Ensure this type covers the whole negative errno range */
} PresetAction;
const char *preset_action_past_tense_to_string(PresetAction action);
void unit_file_presets_done(UnitFilePresets *p);
PresetAction unit_file_query_preset(RuntimeScope scope, const char *root_dir, const char *name, UnitFilePresets *cached);
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 *install_change_type_to_string(InstallChangeType t) _const_;
InstallChangeType install_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_;
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