seccomp-util: allowlist open_tree() as part of @file-system

[thirdparty/systemd.git] / src / systemd / sd-bus.h

/* SPDX-License-Identifier: LGPL-2.1-or-later */
#ifndef foosdbushfoo
#define foosdbushfoo

/***
  systemd is free software; you can redistribute it and/or modify it
  under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation; either version 2.1 of the License, or
  (at your option) any later version.

  systemd is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public License
  along with systemd; If not, see <https://www.gnu.org/licenses/>.
***/

#include <stdio.h>
#include <sys/uio.h>

#include "_sd-common.h"
#include "sd-bus-protocol.h"
#include "sd-bus-vtable.h"
#include "sd-event.h"
#include "sd-id128.h"
#include "sd-json.h"

_SD_BEGIN_DECLARATIONS;

/* Naming */

int sd_bus_interface_name_is_valid(const char *p);
int sd_bus_service_name_is_valid(const char *p);
int sd_bus_member_name_is_valid(const char *p);
int sd_bus_object_path_is_valid(const char *p);

/* Connections */

int sd_bus_default(sd_bus **ret);
int sd_bus_default_user(sd_bus **ret);
int sd_bus_default_system(sd_bus **ret);

int sd_bus_open(sd_bus **ret);
int sd_bus_open_with_description(sd_bus **ret, const char *description);
int sd_bus_open_user(sd_bus **ret);
int sd_bus_open_user_with_description(sd_bus **ret, const char *description);
int sd_bus_open_user_machine(sd_bus **ret, const char *machine);
int sd_bus_open_system(sd_bus **ret);
int sd_bus_open_system_with_description(sd_bus **ret, const char *description);
int sd_bus_open_system_remote(sd_bus **ret, const char *host);
int sd_bus_open_system_machine(sd_bus **ret, const char *machine);

int sd_bus_new(sd_bus **ret);

int sd_bus_set_address(sd_bus *bus, const char *address);
int sd_bus_set_fd(sd_bus *bus, int input_fd, int output_fd);
int sd_bus_set_exec(sd_bus *bus, const char *path, char *const *argv);
int sd_bus_get_address(sd_bus *bus, const char **address);
int sd_bus_set_bus_client(sd_bus *bus, int b);
int sd_bus_is_bus_client(sd_bus *bus);
int sd_bus_set_server(sd_bus *bus, int b, sd_id128_t bus_id);
int sd_bus_is_server(sd_bus *bus);
int sd_bus_set_anonymous(sd_bus *bus, int b);
int sd_bus_is_anonymous(sd_bus *bus);
int sd_bus_set_trusted(sd_bus *bus, int b);
int sd_bus_is_trusted(sd_bus *bus);
int sd_bus_set_monitor(sd_bus *bus, int b);
int sd_bus_is_monitor(sd_bus *bus);
int sd_bus_set_description(sd_bus *bus, const char *description);
int sd_bus_get_description(sd_bus *bus, const char **ret);
int sd_bus_negotiate_creds(sd_bus *bus, int b, uint64_t creds_mask);
int sd_bus_negotiate_timestamp(sd_bus *bus, int b);
int sd_bus_negotiate_fds(sd_bus *bus, int b);
int sd_bus_can_send(sd_bus *bus, char type);
int sd_bus_get_creds_mask(sd_bus *bus, uint64_t *ret);
int sd_bus_set_allow_interactive_authorization(sd_bus *bus, int b);
int sd_bus_get_allow_interactive_authorization(sd_bus *bus);
int sd_bus_set_exit_on_disconnect(sd_bus *bus, int b);
int sd_bus_get_exit_on_disconnect(sd_bus *bus);
int sd_bus_set_close_on_exit(sd_bus *bus, int b);
int sd_bus_get_close_on_exit(sd_bus *bus);
int sd_bus_set_watch_bind(sd_bus *bus, int b);
int sd_bus_get_watch_bind(sd_bus *bus);
int sd_bus_set_connected_signal(sd_bus *bus, int b);
int sd_bus_get_connected_signal(sd_bus *bus);
int sd_bus_set_sender(sd_bus *bus, const char *sender);
int sd_bus_get_sender(sd_bus *bus, const char **ret);

int sd_bus_start(sd_bus *bus);

int sd_bus_try_close(sd_bus *bus) _sd_deprecated_;
void sd_bus_close(sd_bus *bus);

sd_bus* sd_bus_ref(sd_bus *bus);
sd_bus* sd_bus_unref(sd_bus *bus);
sd_bus* sd_bus_close_unref(sd_bus *bus);
sd_bus* sd_bus_flush_close_unref(sd_bus *bus);

void sd_bus_default_flush_close(void);

int sd_bus_is_open(sd_bus *bus);
int sd_bus_is_ready(sd_bus *bus);

int sd_bus_get_bus_id(sd_bus *bus, sd_id128_t *ret);
int sd_bus_get_scope(sd_bus *bus, const char **ret);
int sd_bus_get_tid(sd_bus *bus, pid_t *ret);
int sd_bus_get_owner_creds(sd_bus *bus, uint64_t creds_mask, sd_bus_creds **ret);

int sd_bus_send(sd_bus *bus, sd_bus_message *m, uint64_t *ret_cookie);
int sd_bus_send_to(sd_bus *bus, sd_bus_message *m, const char *destination, uint64_t *ret_cookie);
int sd_bus_call(sd_bus *bus, sd_bus_message *m, uint64_t usec, sd_bus_error *reterr_error, sd_bus_message **ret_reply);
int sd_bus_call_async(sd_bus *bus, sd_bus_slot **ret_slot, sd_bus_message *m, sd_bus_message_handler_t callback, void *userdata, uint64_t usec);

int sd_bus_get_fd(sd_bus *bus);
int sd_bus_get_events(sd_bus *bus);
int sd_bus_get_timeout(sd_bus *bus, uint64_t *ret);
int sd_bus_process(sd_bus *bus, sd_bus_message **ret);
int sd_bus_process_priority(sd_bus *bus, int64_t max_priority, sd_bus_message **ret) _sd_deprecated_;
int sd_bus_wait(sd_bus *bus, uint64_t timeout_usec);
int sd_bus_flush(sd_bus *bus);
int sd_bus_enqueue_for_read(sd_bus *bus, sd_bus_message *m);

sd_bus_slot* sd_bus_get_current_slot(sd_bus *bus);
sd_bus_message* sd_bus_get_current_message(sd_bus *bus);
sd_bus_message_handler_t sd_bus_get_current_handler(sd_bus *bus);
void* sd_bus_get_current_userdata(sd_bus *bus);

int sd_bus_attach_event(sd_bus *bus, sd_event *e, int priority);
int sd_bus_detach_event(sd_bus *bus);
sd_event* sd_bus_get_event(sd_bus *bus);

int sd_bus_get_n_queued_read(sd_bus *bus, uint64_t *ret);
int sd_bus_get_n_queued_write(sd_bus *bus, uint64_t *ret);

int sd_bus_set_method_call_timeout(sd_bus *bus, uint64_t usec);
int sd_bus_get_method_call_timeout(sd_bus *bus, uint64_t *ret);

int sd_bus_add_filter(sd_bus *bus, sd_bus_slot **ret_slot, sd_bus_message_handler_t callback, void *userdata);
int sd_bus_add_match(sd_bus *bus, sd_bus_slot **ret_slot, const char *match, sd_bus_message_handler_t callback, void *userdata);
int sd_bus_add_match_async(sd_bus *bus, sd_bus_slot **ret_slot, const char *match, sd_bus_message_handler_t callback, sd_bus_message_handler_t install_callback, void *userdata);
int sd_bus_add_object(sd_bus *bus, sd_bus_slot **ret_slot, const char *path, sd_bus_message_handler_t callback, void *userdata);
int sd_bus_add_fallback(sd_bus *bus, sd_bus_slot **ret_slot, const char *prefix, sd_bus_message_handler_t callback, void *userdata);
int sd_bus_add_object_vtable(sd_bus *bus, sd_bus_slot **ret_slot, const char *path, const char *interface, const sd_bus_vtable *vtable, void *userdata);
int sd_bus_add_fallback_vtable(sd_bus *bus, sd_bus_slot **ret_slot, const char *prefix, const char *interface, const sd_bus_vtable *vtable, sd_bus_object_find_t find, void *userdata);
int sd_bus_add_node_enumerator(sd_bus *bus, sd_bus_slot **ret_slot, const char *path, sd_bus_node_enumerator_t callback, void *userdata);
int sd_bus_add_object_manager(sd_bus *bus, sd_bus_slot **ret_slot, const char *path);

int sd_bus_pending_method_calls(sd_bus *bus);

/* Slot object */

sd_bus_slot* sd_bus_slot_ref(sd_bus_slot *slot);
sd_bus_slot* sd_bus_slot_unref(sd_bus_slot *slot);

sd_bus* sd_bus_slot_get_bus(sd_bus_slot *slot);
void* sd_bus_slot_get_userdata(sd_bus_slot *slot);
void* sd_bus_slot_set_userdata(sd_bus_slot *slot, void *userdata);
int sd_bus_slot_set_description(sd_bus_slot *slot, const char *description);
int sd_bus_slot_get_description(sd_bus_slot *slot, const char **ret);
int sd_bus_slot_get_floating(sd_bus_slot *slot);
int sd_bus_slot_set_floating(sd_bus_slot *slot, int b);
int sd_bus_slot_set_destroy_callback(sd_bus_slot *s, sd_bus_destroy_t callback);
int sd_bus_slot_get_destroy_callback(sd_bus_slot *s, sd_bus_destroy_t *ret);

sd_bus_message* sd_bus_slot_get_current_message(sd_bus_slot *slot);
sd_bus_message_handler_t sd_bus_slot_get_current_handler(sd_bus_slot *slot);
void* sd_bus_slot_get_current_userdata(sd_bus_slot *slot);

/* Message object */

int sd_bus_message_new(sd_bus *bus, sd_bus_message **ret, uint8_t type);
int sd_bus_message_new_signal(sd_bus *bus, sd_bus_message **ret, const char *path, const char *interface, const char *member);
int sd_bus_message_new_signal_to(sd_bus *bus, sd_bus_message **ret, const char *destination, const char *path, const char *interface, const char *member);
int sd_bus_message_new_method_call(sd_bus *bus, sd_bus_message **ret, const char *destination, const char *path, const char *interface, const char *member);
int sd_bus_message_new_method_return(sd_bus_message *call, sd_bus_message **ret);
int sd_bus_message_new_method_error(sd_bus_message *call, sd_bus_message **ret, const sd_bus_error *e);
int sd_bus_message_new_method_errorf(sd_bus_message *call, sd_bus_message **ret, const char *name, const char *format, ...) _sd_printf_(4, 5);
int sd_bus_message_new_method_errno(sd_bus_message *call, sd_bus_message **ret, int error, const sd_bus_error *e);
int sd_bus_message_new_method_errnof(sd_bus_message *call, sd_bus_message **ret, int error, const char *format, ...) _sd_printf_(4, 5);

sd_bus_message* sd_bus_message_ref(sd_bus_message *m);
sd_bus_message* sd_bus_message_unref(sd_bus_message *m);

int sd_bus_message_seal(sd_bus_message *m, uint64_t cookie, uint64_t timeout_usec);

int sd_bus_message_get_type(sd_bus_message *m, uint8_t *ret);
int sd_bus_message_get_cookie(sd_bus_message *m, uint64_t *ret);
int sd_bus_message_get_reply_cookie(sd_bus_message *m, uint64_t *ret);
int sd_bus_message_get_priority(sd_bus_message *m, int64_t *ret) _sd_deprecated_;

int sd_bus_message_get_expect_reply(sd_bus_message *m);
int sd_bus_message_get_auto_start(sd_bus_message *m);
int sd_bus_message_get_allow_interactive_authorization(sd_bus_message *m);

const char* sd_bus_message_get_signature(sd_bus_message *m, int complete);
const char* sd_bus_message_get_path(sd_bus_message *m);
const char* sd_bus_message_get_interface(sd_bus_message *m);
const char* sd_bus_message_get_member(sd_bus_message *m);
const char* sd_bus_message_get_destination(sd_bus_message *m);
const char* sd_bus_message_get_sender(sd_bus_message *m);
const sd_bus_error* sd_bus_message_get_error(sd_bus_message *m);
int sd_bus_message_get_errno(sd_bus_message *m);

int sd_bus_message_get_monotonic_usec(sd_bus_message *m, uint64_t *ret);
int sd_bus_message_get_realtime_usec(sd_bus_message *m, uint64_t *ret);
int sd_bus_message_get_seqnum(sd_bus_message *m, uint64_t *ret);

sd_bus* sd_bus_message_get_bus(sd_bus_message *m);
sd_bus_creds* sd_bus_message_get_creds(sd_bus_message *m); /* do not unref the result */

int sd_bus_message_is_signal(sd_bus_message *m, const char *interface, const char *member);
int sd_bus_message_is_method_call(sd_bus_message *m, const char *interface, const char *member);
int sd_bus_message_is_method_error(sd_bus_message *m, const char *name);
int sd_bus_message_is_empty(sd_bus_message *m);
int sd_bus_message_has_signature(sd_bus_message *m, const char *signature);

int sd_bus_message_set_expect_reply(sd_bus_message *m, int b);
int sd_bus_message_set_auto_start(sd_bus_message *m, int b);
int sd_bus_message_set_allow_interactive_authorization(sd_bus_message *m, int b);

int sd_bus_message_set_destination(sd_bus_message *m, const char *destination);
int sd_bus_message_set_sender(sd_bus_message *m, const char *sender);
int sd_bus_message_set_priority(sd_bus_message *m, int64_t priority) _sd_deprecated_;

int sd_bus_message_append(sd_bus_message *m, const char *types, ...);
int sd_bus_message_appendv(sd_bus_message *m, const char *types, va_list ap);
int sd_bus_message_append_basic(sd_bus_message *m, char type, const void *p);
int sd_bus_message_append_array(sd_bus_message *m, char type, const void *ptr, size_t size);
int sd_bus_message_append_array_space(sd_bus_message *m, char type, size_t size, void **ret);
int sd_bus_message_append_array_iovec(sd_bus_message *m, char type, const struct iovec *iov, unsigned n);
int sd_bus_message_append_array_memfd(sd_bus_message *m, char type, int memfd, uint64_t offset, uint64_t size);
int sd_bus_message_append_string_space(sd_bus_message *m, size_t size, char **ret);
int sd_bus_message_append_string_iovec(sd_bus_message *m, const struct iovec *iov, unsigned n);
int sd_bus_message_append_string_memfd(sd_bus_message *m, int memfd, uint64_t offset, uint64_t size);
int sd_bus_message_append_strv(sd_bus_message *m, char **l);
int sd_bus_message_open_container(sd_bus_message *m, char type, const char *contents);
int sd_bus_message_close_container(sd_bus_message *m);
int sd_bus_message_copy(sd_bus_message *m, sd_bus_message *source, int all);

int sd_bus_message_read(sd_bus_message *m, const char *types, ...);
int sd_bus_message_readv(sd_bus_message *m, const char *types, va_list ap);
int sd_bus_message_read_basic(sd_bus_message *m, char type, void *ret);
int sd_bus_message_read_array(sd_bus_message *m, char type, const void **ret_ptr, size_t *ret_size);
int sd_bus_message_read_strv(sd_bus_message *m, char ***ret); /* free the result! */
int sd_bus_message_read_strv_extend(sd_bus_message *m, char ***l);
int sd_bus_message_skip(sd_bus_message *m, const char *types);
int sd_bus_message_enter_container(sd_bus_message *m, char type, const char *contents);
int sd_bus_message_exit_container(sd_bus_message *m);
int sd_bus_message_peek_type(sd_bus_message *m, char *ret_type, const char **ret_contents);
int sd_bus_message_verify_type(sd_bus_message *m, char type, const char *contents);
int sd_bus_message_at_end(sd_bus_message *m, int complete);
int sd_bus_message_rewind(sd_bus_message *m, int complete);
int sd_bus_message_sensitive(sd_bus_message *m);

int sd_bus_message_dump(sd_bus_message *m, FILE *f, uint64_t flags);
int sd_bus_message_dump_json(sd_bus_message *m, uint64_t flags, sd_json_variant **ret);

/* Bus management */

int sd_bus_get_unique_name(sd_bus *bus, const char **unique);
int sd_bus_request_name(sd_bus *bus, const char *name, uint64_t flags);
int sd_bus_request_name_async(sd_bus *bus, sd_bus_slot **ret_slot, const char *name, uint64_t flags, sd_bus_message_handler_t callback, void *userdata);
int sd_bus_release_name(sd_bus *bus, const char *name);
int sd_bus_release_name_async(sd_bus *bus, sd_bus_slot **ret_slot, const char *name, sd_bus_message_handler_t callback, void *userdata);
int sd_bus_list_names(sd_bus *bus, char ***ret_acquired, char ***ret_activatable); /* free the results */
int sd_bus_get_name_creds(sd_bus *bus, const char *name, uint64_t mask, sd_bus_creds **ret); /* unref the result! */
int sd_bus_get_name_machine_id(sd_bus *bus, const char *name, sd_id128_t *ret);

/* Convenience calls */

int sd_bus_message_send(sd_bus_message *m);
int sd_bus_call_methodv(sd_bus *bus, const char *destination, const char *path, const char *interface, const char *member, sd_bus_error *reterr_error, sd_bus_message **ret_reply, const char *types, va_list ap);
int sd_bus_call_method(sd_bus *bus, const char *destination, const char *path, const char *interface, const char *member, sd_bus_error *reterr_error, sd_bus_message **ret_reply, const char *types, ...);
int sd_bus_call_method_asyncv(sd_bus *bus, sd_bus_slot **ret_slot, const char *destination, const char *path, const char *interface, const char *member, sd_bus_message_handler_t callback, void *userdata, const char *types, va_list ap);
int sd_bus_call_method_async(sd_bus *bus, sd_bus_slot **ret_slot, const char *destination, const char *path, const char *interface, const char *member, sd_bus_message_handler_t callback, void *userdata, const char *types, ...);
int sd_bus_get_property(sd_bus *bus, const char *destination, const char *path, const char *interface, const char *member, sd_bus_error *reterr_error, sd_bus_message **ret_reply, const char *type);
int sd_bus_get_property_trivial(sd_bus *bus, const char *destination, const char *path, const char *interface, const char *member, sd_bus_error *reterr_error, char type, void *ret);
int sd_bus_get_property_string(sd_bus *bus, const char *destination, const char *path, const char *interface, const char *member, sd_bus_error *reterr_error, char **ret); /* free the result! */
int sd_bus_get_property_strv(sd_bus *bus, const char *destination, const char *path, const char *interface, const char *member, sd_bus_error *reterr_error, char ***ret); /* free the result! */
int sd_bus_set_propertyv(sd_bus *bus, const char *destination, const char *path, const char *interface, const char *member, sd_bus_error *reterr_error, const char *type, va_list ap);
int sd_bus_set_property(sd_bus *bus, const char *destination, const char *path, const char *interface, const char *member, sd_bus_error *reterr_error, const char *type, ...);

int sd_bus_reply_method_returnv(sd_bus_message *call, const char *types, va_list ap);
int sd_bus_reply_method_return(sd_bus_message *call, const char *types, ...);
int sd_bus_reply_method_error(sd_bus_message *call, const sd_bus_error *e);
int sd_bus_reply_method_errorfv(sd_bus_message *call, const char *name, const char *format, va_list ap) _sd_printf_(3, 0);
int sd_bus_reply_method_errorf(sd_bus_message *call, const char *name, const char *format, ...) _sd_printf_(3, 4);
int sd_bus_reply_method_errno(sd_bus_message *call, int error, const sd_bus_error *e);
int sd_bus_reply_method_errnofv(sd_bus_message *call, int error, const char *format, va_list ap) _sd_printf_(3, 0);
int sd_bus_reply_method_errnof(sd_bus_message *call, int error, const char *format, ...) _sd_printf_(3, 4);

int sd_bus_emit_signalv(sd_bus *bus, const char *path, const char *interface, const char *member, const char *types, va_list ap);
int sd_bus_emit_signal(sd_bus *bus, const char *path, const char *interface, const char *member, const char *types, ...);
int sd_bus_emit_signal_tov(sd_bus *bus, const char *destination, const char *path, const char *interface, const char *member, const char *types, va_list ap);
int sd_bus_emit_signal_to(sd_bus *bus, const char *destination, const char *path, const char *interface, const char *member, const char *types, ...);

int sd_bus_emit_properties_changed_strv(sd_bus *bus, const char *path, const char *interface, char **names);
int sd_bus_emit_properties_changed(sd_bus *bus, const char *path, const char *interface, const char *name, ...) _sd_sentinel_;

int sd_bus_emit_object_added(sd_bus *bus, const char *path);
int sd_bus_emit_object_removed(sd_bus *bus, const char *path);
int sd_bus_emit_interfaces_added_strv(sd_bus *bus, const char *path, char **interfaces);
int sd_bus_emit_interfaces_added(sd_bus *bus, const char *path, const char *interface, ...) _sd_sentinel_;
int sd_bus_emit_interfaces_removed_strv(sd_bus *bus, const char *path, char **interfaces);
int sd_bus_emit_interfaces_removed(sd_bus *bus, const char *path, const char *interface, ...) _sd_sentinel_;

int sd_bus_query_sender_creds(sd_bus_message *m, uint64_t mask, sd_bus_creds **ret);
int sd_bus_query_sender_privilege(sd_bus_message *m, int capability);

int sd_bus_match_signal(sd_bus *bus, sd_bus_slot **ret, const char *sender, const char *path, const char *interface, const char *member, sd_bus_message_handler_t callback, void *userdata);
int sd_bus_match_signal_async(sd_bus *bus, sd_bus_slot **ret, const char *sender, const char *path, const char *interface, const char *member, sd_bus_message_handler_t match_callback, sd_bus_message_handler_t install_callback, void *userdata);

/* Credential handling */

int sd_bus_creds_new_from_pid(sd_bus_creds **ret, pid_t pid, uint64_t creds_mask);
int sd_bus_creds_new_from_pidfd(sd_bus_creds **ret, int pidfd, uint64_t creds_mask);
sd_bus_creds* sd_bus_creds_ref(sd_bus_creds *c);
sd_bus_creds* sd_bus_creds_unref(sd_bus_creds *c);
uint64_t sd_bus_creds_get_mask(const sd_bus_creds *c);
uint64_t sd_bus_creds_get_augmented_mask(const sd_bus_creds *c);

int sd_bus_creds_get_pid(sd_bus_creds *c, pid_t *ret);
int sd_bus_creds_get_pidfd_dup(sd_bus_creds *c, int *ret);
int sd_bus_creds_get_ppid(sd_bus_creds *c, pid_t *ret);
int sd_bus_creds_get_tid(sd_bus_creds *c, pid_t *ret);
int sd_bus_creds_get_uid(sd_bus_creds *c, uid_t *ret);
int sd_bus_creds_get_euid(sd_bus_creds *c, uid_t *ret);
int sd_bus_creds_get_suid(sd_bus_creds *c, uid_t *ret);
int sd_bus_creds_get_fsuid(sd_bus_creds *c, uid_t *ret);
int sd_bus_creds_get_gid(sd_bus_creds *c, gid_t *ret);
int sd_bus_creds_get_egid(sd_bus_creds *c, gid_t *ret);
int sd_bus_creds_get_sgid(sd_bus_creds *c, gid_t *ret);
int sd_bus_creds_get_fsgid(sd_bus_creds *c, gid_t *ret);
int sd_bus_creds_get_supplementary_gids(sd_bus_creds *c, const gid_t **ret);
int sd_bus_creds_get_comm(sd_bus_creds *c, const char **ret);
int sd_bus_creds_get_tid_comm(sd_bus_creds *c, const char **ret);
int sd_bus_creds_get_exe(sd_bus_creds *c, const char **ret);
int sd_bus_creds_get_cmdline(sd_bus_creds *c, char ***ret);
int sd_bus_creds_get_cgroup(sd_bus_creds *c, const char **ret);
int sd_bus_creds_get_unit(sd_bus_creds *c, const char **ret);
int sd_bus_creds_get_slice(sd_bus_creds *c, const char **ret);
int sd_bus_creds_get_user_unit(sd_bus_creds *c, const char **ret);
int sd_bus_creds_get_user_slice(sd_bus_creds *c, const char **ret);
int sd_bus_creds_get_session(sd_bus_creds *c, const char **ret);
int sd_bus_creds_get_owner_uid(sd_bus_creds *c, uid_t *ret);
int sd_bus_creds_has_effective_cap(sd_bus_creds *c, int capability);
int sd_bus_creds_has_permitted_cap(sd_bus_creds *c, int capability);
int sd_bus_creds_has_inheritable_cap(sd_bus_creds *c, int capability);
int sd_bus_creds_has_bounding_cap(sd_bus_creds *c, int capability);
int sd_bus_creds_get_selinux_context(sd_bus_creds *c, const char **ret);
int sd_bus_creds_get_audit_session_id(sd_bus_creds *c, uint32_t *ret);
int sd_bus_creds_get_audit_login_uid(sd_bus_creds *c, uid_t *ret);
int sd_bus_creds_get_tty(sd_bus_creds *c, const char **ret);
int sd_bus_creds_get_unique_name(sd_bus_creds *c, const char **ret);
int sd_bus_creds_get_well_known_names(sd_bus_creds *c, char ***ret);
int sd_bus_creds_get_description(sd_bus_creds *c, const char **ret);

/* Error structures */

#define SD_BUS_ERROR_MAKE_CONST(name, message) ((const sd_bus_error) {(name), (message), 0})
#define SD_BUS_ERROR_NULL SD_BUS_ERROR_MAKE_CONST(NULL, NULL)

void sd_bus_error_free(sd_bus_error *e);
int sd_bus_error_set(sd_bus_error *e, const char *name, const char *message);
int sd_bus_error_setf(sd_bus_error *e, const char *name, const char *format, ...)  _sd_printf_(3, 4);
int sd_bus_error_setfv(sd_bus_error *e, const char *name, const char *format, va_list ap) _sd_printf_(3,0);

int sd_bus_error_set_const(sd_bus_error *e, const char *name, const char *message);
int sd_bus_error_set_errno(sd_bus_error *e, int error);
int sd_bus_error_set_errnof(sd_bus_error *e, int error, const char *format, ...) _sd_printf_(3, 4);
int sd_bus_error_set_errnofv(sd_bus_error *e, int error, const char *format, va_list ap) _sd_printf_(3,0);
int sd_bus_error_get_errno(const sd_bus_error *e);
int sd_bus_error_copy(sd_bus_error *dest, const sd_bus_error *e);
int sd_bus_error_move(sd_bus_error *dest, sd_bus_error *e);
_sd_pure_ int sd_bus_error_is_set(const sd_bus_error *e);
_sd_pure_ int sd_bus_error_has_name(const sd_bus_error *e, const char *name);
int sd_bus_error_has_names_sentinel(const sd_bus_error *e, ...) _sd_sentinel_;
#define sd_bus_error_has_names(e, ...) sd_bus_error_has_names_sentinel(e, __VA_ARGS__, NULL)

#define SD_BUS_ERROR_MAP(_name, _code)          \
        {                                       \
                .name = _name,                  \
                .code = _code,                  \
        }
#define SD_BUS_ERROR_MAP_END                    \
        {                                       \
                .name = NULL,                   \
                .code = - 'x',                  \
        }

int sd_bus_error_add_map(const sd_bus_error_map *map);

/* Auxiliary macros */

#define SD_BUS_MESSAGE_APPEND_ID128(x) 16,                              \
                (x).bytes[0],  (x).bytes[1],  (x).bytes[2],  (x).bytes[3], \
                (x).bytes[4],  (x).bytes[5],  (x).bytes[6],  (x).bytes[7], \
                (x).bytes[8],  (x).bytes[9],  (x).bytes[10], (x).bytes[11], \
                (x).bytes[12], (x).bytes[13], (x).bytes[14], (x).bytes[15]

#define SD_BUS_MESSAGE_READ_ID128(x) 16,                                \
                &(x).bytes[0],  &(x).bytes[1],  &(x).bytes[2],  &(x).bytes[3], \
                &(x).bytes[4],  &(x).bytes[5],  &(x).bytes[6],  &(x).bytes[7], \
                &(x).bytes[8],  &(x).bytes[9],  &(x).bytes[10], &(x).bytes[11], \
                &(x).bytes[12], &(x).bytes[13], &(x).bytes[14], &(x).bytes[15]

/* Label escaping */

int sd_bus_path_encode(const char *prefix, const char *external_id, char **ret);
int sd_bus_path_encode_many(char **ret, const char *path_template, ...);
int sd_bus_path_decode(const char *path, const char *prefix, char **ret);
int sd_bus_path_decode_many(const char *path, const char *path_template, ...);

/* Tracking peers */

int sd_bus_track_new(sd_bus *bus, sd_bus_track **ret, sd_bus_track_handler_t handler, void *userdata);
sd_bus_track* sd_bus_track_ref(sd_bus_track *track);
sd_bus_track* sd_bus_track_unref(sd_bus_track *track);

sd_bus* sd_bus_track_get_bus(sd_bus_track *track);
void* sd_bus_track_get_userdata(sd_bus_track *track);
void* sd_bus_track_set_userdata(sd_bus_track *track, void *userdata);

int sd_bus_track_add_sender(sd_bus_track *track, sd_bus_message *m);
int sd_bus_track_remove_sender(sd_bus_track *track, sd_bus_message *m);
int sd_bus_track_add_name(sd_bus_track *track, const char *name);
int sd_bus_track_remove_name(sd_bus_track *track, const char *name);

int sd_bus_track_set_recursive(sd_bus_track *track, int b);
int sd_bus_track_get_recursive(sd_bus_track *track);

unsigned sd_bus_track_count(sd_bus_track *track);
int sd_bus_track_count_sender(sd_bus_track *track, sd_bus_message *m);
int sd_bus_track_count_name(sd_bus_track *track, const char *name);

const char* sd_bus_track_contains(sd_bus_track *track, const char *name);
const char* sd_bus_track_first(sd_bus_track *track);
const char* sd_bus_track_next(sd_bus_track *track);

int sd_bus_track_set_destroy_callback(sd_bus_track *s, sd_bus_destroy_t callback);
int sd_bus_track_get_destroy_callback(sd_bus_track *s, sd_bus_destroy_t *ret);

/* Define helpers so that __attribute__((cleanup(sd_bus_unrefp))) and similar may be used. */
_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_bus, sd_bus_unref);
_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_bus, sd_bus_close_unref);
_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_bus, sd_bus_flush_close_unref);
_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_bus_slot, sd_bus_slot_unref);
_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_bus_message, sd_bus_message_unref);
_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_bus_creds, sd_bus_creds_unref);
_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_bus_track, sd_bus_track_unref);

_SD_END_DECLARATIONS;

#endif