8f7b256665
When doing list-unit-files with --root, we would re-read the preset list for every unit. This uses a cache to only do it once. The time for list-unit-files goes down by about ~30%. unit_file_query_preset() is also called from src/core/. This patch does not touch that path, since the saving there are smaller, since preset status is only read on demand over dbus, and caching would be more complicated.
212 lines
6.9 KiB
C
212 lines
6.9 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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typedef enum UnitFilePresetMode UnitFilePresetMode;
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typedef enum UnitFileChangeType UnitFileChangeType;
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typedef enum UnitFileFlags UnitFileFlags;
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typedef enum UnitFileType UnitFileType;
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typedef struct UnitFileChange UnitFileChange;
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typedef struct UnitFileList UnitFileList;
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typedef struct UnitFileInstallInfo UnitFileInstallInfo;
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#include <stdbool.h>
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#include "hashmap.h"
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#include "macro.h"
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#include "path-lookup.h"
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#include "strv.h"
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#include "unit-name.h"
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enum UnitFilePresetMode {
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UNIT_FILE_PRESET_FULL,
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UNIT_FILE_PRESET_ENABLE_ONLY,
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UNIT_FILE_PRESET_DISABLE_ONLY,
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_UNIT_FILE_PRESET_MAX,
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_UNIT_FILE_PRESET_INVALID = -1
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};
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enum UnitFileChangeType {
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UNIT_FILE_SYMLINK,
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UNIT_FILE_UNLINK,
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UNIT_FILE_IS_MASKED,
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UNIT_FILE_IS_DANGLING,
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_UNIT_FILE_CHANGE_TYPE_MAX,
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_UNIT_FILE_CHANGE_TYPE_INVALID = INT_MIN
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};
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enum UnitFileFlags {
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UNIT_FILE_RUNTIME = 1 << 0,
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UNIT_FILE_FORCE = 1 << 1,
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UNIT_FILE_DRY_RUN = 1 << 2,
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};
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/* type can either one of the UnitFileChangeTypes listed above, or a negative error.
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* If source is specified, it should be the contents of the path symlink.
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* In case of an error, source should be the existing symlink contents or NULL
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*/
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struct UnitFileChange {
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int type; /* UnitFileChangeType or bust */
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char *path;
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char *source;
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};
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static inline bool unit_file_changes_have_modification(const UnitFileChange* changes, size_t n_changes) {
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size_t i;
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for (i = 0; i < n_changes; i++)
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if (IN_SET(changes[i].type, UNIT_FILE_SYMLINK, UNIT_FILE_UNLINK))
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return true;
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return false;
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}
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struct UnitFileList {
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char *path;
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UnitFileState state;
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};
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enum UnitFileType {
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UNIT_FILE_TYPE_REGULAR,
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UNIT_FILE_TYPE_SYMLINK,
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UNIT_FILE_TYPE_MASKED,
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_UNIT_FILE_TYPE_MAX,
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_UNIT_FILE_TYPE_INVALID = -1,
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};
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struct UnitFileInstallInfo {
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char *name;
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char *path;
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char **aliases;
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char **wanted_by;
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char **required_by;
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char **also;
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char *default_instance;
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char *symlink_target;
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UnitFileType type;
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bool auxiliary;
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};
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int unit_file_enable(
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UnitFileScope scope,
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UnitFileFlags flags,
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const char *root_dir,
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char **files,
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UnitFileChange **changes,
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size_t *n_changes);
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int unit_file_disable(
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UnitFileScope scope,
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UnitFileFlags flags,
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const char *root_dir,
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char **files,
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UnitFileChange **changes,
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size_t *n_changes);
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int unit_file_reenable(
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UnitFileScope scope,
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UnitFileFlags flags,
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const char *root_dir,
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char **files,
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UnitFileChange **changes,
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size_t *n_changes);
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int unit_file_preset(
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UnitFileScope scope,
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UnitFileFlags flags,
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const char *root_dir,
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char **files,
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UnitFilePresetMode mode,
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UnitFileChange **changes,
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size_t *n_changes);
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int unit_file_preset_all(
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UnitFileScope scope,
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UnitFileFlags flags,
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const char *root_dir,
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UnitFilePresetMode mode,
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UnitFileChange **changes,
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size_t *n_changes);
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int unit_file_mask(
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UnitFileScope scope,
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UnitFileFlags flags,
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const char *root_dir,
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char **files,
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UnitFileChange **changes,
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size_t *n_changes);
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int unit_file_unmask(
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UnitFileScope scope,
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UnitFileFlags flags,
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const char *root_dir,
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char **files,
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UnitFileChange **changes,
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size_t *n_changes);
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int unit_file_link(
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UnitFileScope scope,
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UnitFileFlags flags,
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const char *root_dir,
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char **files,
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UnitFileChange **changes,
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size_t *n_changes);
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int unit_file_revert(
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UnitFileScope scope,
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const char *root_dir,
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char **files,
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UnitFileChange **changes,
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size_t *n_changes);
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int unit_file_set_default(
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UnitFileScope scope,
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UnitFileFlags flags,
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const char *root_dir,
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const char *file,
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UnitFileChange **changes,
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size_t *n_changes);
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int unit_file_get_default(
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UnitFileScope scope,
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const char *root_dir,
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char **name);
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int unit_file_add_dependency(
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UnitFileScope scope,
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UnitFileFlags flags,
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const char *root_dir,
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char **files,
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const char *target,
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UnitDependency dep,
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UnitFileChange **changes,
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size_t *n_changes);
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int unit_file_lookup_state(
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UnitFileScope scope,
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const LookupPaths *paths,
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const char *name,
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UnitFileState *ret);
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int unit_file_get_state(UnitFileScope scope, const char *root_dir, const char *filename, UnitFileState *ret);
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int unit_file_exists(UnitFileScope scope, const LookupPaths *paths, const char *name);
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int unit_file_get_list(UnitFileScope scope, const char *root_dir, Hashmap *h, char **states, char **patterns);
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Hashmap* unit_file_list_free(Hashmap *h);
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int unit_file_changes_add(UnitFileChange **changes, size_t *n_changes, UnitFileChangeType type, const char *path, const char *source);
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void unit_file_changes_free(UnitFileChange *changes, size_t n_changes);
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void unit_file_dump_changes(int r, const char *verb, const UnitFileChange *changes, size_t n_changes, bool quiet);
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int unit_file_verify_alias(const UnitFileInstallInfo *i, const char *dst, char **ret_dst);
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typedef struct UnitFilePresetRule UnitFilePresetRule;
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typedef struct {
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UnitFilePresetRule *rules;
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size_t n_rules;
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bool initialized;
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} UnitFilePresets;
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void unit_file_presets_freep(UnitFilePresets *p);
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int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char *name, UnitFilePresets *cached);
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const char *unit_file_state_to_string(UnitFileState s) _const_;
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UnitFileState unit_file_state_from_string(const char *s) _pure_;
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/* from_string conversion is unreliable because of the overlap between -EPERM and -1 for error. */
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const char *unit_file_change_type_to_string(UnitFileChangeType s) _const_;
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UnitFileChangeType unit_file_change_type_from_string(const char *s) _pure_;
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const char *unit_file_preset_mode_to_string(UnitFilePresetMode m) _const_;
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UnitFilePresetMode unit_file_preset_mode_from_string(const char *s) _pure_;
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