X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fsystemd%2Fsd-bus.h;h=e6c95590f6f5819219abef8faa6f1f6bc169cde8;hp=45b264ab1c5d635c0a1318a4db2022d53c6388fd;hb=455971c1493fc6dc3125d235cf4ea6102cac626d;hpb=b6b7d4337976eeac610b9ed2c3e1fd596a247b14 diff --git a/src/systemd/sd-bus.h b/src/systemd/sd-bus.h index 45b264ab1..e6c95590f 100644 --- a/src/systemd/sd-bus.h +++ b/src/systemd/sd-bus.h @@ -24,38 +24,88 @@ #include #include +#include -#include -#include "sd-bus-protocol.h" +#include "sd-id128.h" +#include "sd-event.h" +#include "_sd-common.h" -#ifdef __cplusplus -extern "C" { -#endif +_SD_BEGIN_DECLARATIONS; -/* TODO: - * - rewrite message_read_ap() and message_append_ap() to be non-recursive. - * - * - add page donation logic - * - api for appending/reading fixed arrays - * - merge busctl into systemctl or so? - * - default policy (allow uid == 0 and our own uid) - */ +/* Types */ typedef struct sd_bus sd_bus; typedef struct sd_bus_message sd_bus_message; +typedef struct sd_bus_slot sd_bus_slot; +typedef struct sd_bus_creds sd_bus_creds; +typedef struct sd_bus_track sd_bus_track; typedef struct { const char *name; const char *message; - int need_free; + int _need_free; } sd_bus_error; -typedef int (*sd_bus_message_handler_t)(sd_bus *bus, int ret, sd_bus_message *m, void *userdata); +/* Flags */ + +enum { + SD_BUS_CREDS_PID = 1ULL << 0, + SD_BUS_CREDS_PID_STARTTIME = 1ULL << 1, + SD_BUS_CREDS_TID = 1ULL << 2, + SD_BUS_CREDS_UID = 1ULL << 3, + SD_BUS_CREDS_GID = 1ULL << 4, + SD_BUS_CREDS_COMM = 1ULL << 5, + SD_BUS_CREDS_TID_COMM = 1ULL << 6, + SD_BUS_CREDS_EXE = 1ULL << 7, + SD_BUS_CREDS_CMDLINE = 1ULL << 8, + SD_BUS_CREDS_CGROUP = 1ULL << 9, + SD_BUS_CREDS_UNIT = 1ULL << 10, + SD_BUS_CREDS_USER_UNIT = 1ULL << 11, + SD_BUS_CREDS_SLICE = 1ULL << 12, + SD_BUS_CREDS_SESSION = 1ULL << 13, + SD_BUS_CREDS_OWNER_UID = 1ULL << 14, + SD_BUS_CREDS_EFFECTIVE_CAPS = 1ULL << 15, + SD_BUS_CREDS_PERMITTED_CAPS = 1ULL << 16, + SD_BUS_CREDS_INHERITABLE_CAPS = 1ULL << 17, + SD_BUS_CREDS_BOUNDING_CAPS = 1ULL << 18, + SD_BUS_CREDS_SELINUX_CONTEXT = 1ULL << 19, + SD_BUS_CREDS_AUDIT_SESSION_ID = 1ULL << 20, + SD_BUS_CREDS_AUDIT_LOGIN_UID = 1ULL << 21, + SD_BUS_CREDS_UNIQUE_NAME = 1ULL << 22, + SD_BUS_CREDS_WELL_KNOWN_NAMES = 1ULL << 23, + SD_BUS_CREDS_DESCRIPTION = 1ULL << 24, + _SD_BUS_CREDS_ALL = (1ULL << 25) -1, +}; + +enum { + SD_BUS_NAME_REPLACE_EXISTING = 1ULL << 0, + SD_BUS_NAME_ALLOW_REPLACEMENT = 1ULL << 1, + SD_BUS_NAME_QUEUE = 1ULL << 2, +}; + +/* Callbacks */ + +typedef int (*sd_bus_message_handler_t)(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *ret_error); +typedef int (*sd_bus_property_get_t) (sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *ret_error); +typedef int (*sd_bus_property_set_t) (sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *value, void *userdata, sd_bus_error *ret_error); +typedef int (*sd_bus_object_find_t) (sd_bus *bus, const char *path, const char *interface, void *userdata, void **ret_found, sd_bus_error *ret_error); +typedef int (*sd_bus_node_enumerator_t) (sd_bus *bus, const char *path, void *userdata, char ***ret_nodes, sd_bus_error *ret_error); +typedef int (*sd_bus_track_handler_t) (sd_bus_track *track, void *userdata); + +#include "sd-bus-protocol.h" +#include "sd-bus-vtable.h" /* Connections */ -int sd_bus_open_system(sd_bus **ret); +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_user(sd_bus **ret); +int sd_bus_open_system(sd_bus **ret); +int sd_bus_open_system_remote(sd_bus **ret, const char *host); +int sd_bus_open_system_container(sd_bus **ret, const char *machine); int sd_bus_new(sd_bus **ret); int sd_bus_set_address(sd_bus *bus, const char *address); @@ -64,9 +114,15 @@ int sd_bus_set_exec(sd_bus *bus, const char *path, char *const argv[]); int sd_bus_set_bus_client(sd_bus *bus, int b); int sd_bus_set_server(sd_bus *bus, int b, sd_id128_t server_id); int sd_bus_set_anonymous(sd_bus *bus, int b); -int sd_bus_set_negotiate_fds(sd_bus *bus, int b); +int sd_bus_set_trusted(sd_bus *bus, int b); +int sd_bus_set_description(sd_bus *bus, const char *description); +int sd_bus_set_monitor(sd_bus *bus, int b); +int sd_bus_negotiate_fds(sd_bus *bus, int b); +int sd_bus_negotiate_timestamp(sd_bus *bus, int b); +int sd_bus_negotiate_creds(sd_bus *bus, uint64_t creds_mask); int sd_bus_start(sd_bus *ret); +int sd_bus_try_close(sd_bus *bus); void sd_bus_close(sd_bus *bus); sd_bus *sd_bus_ref(sd_bus *bus); @@ -75,109 +131,277 @@ sd_bus *sd_bus_unref(sd_bus *bus); int sd_bus_is_open(sd_bus *bus); int sd_bus_can_send(sd_bus *bus, char type); int sd_bus_get_server_id(sd_bus *bus, sd_id128_t *peer); +int sd_bus_get_owner_creds(sd_bus *bus, uint64_t creds_mask, sd_bus_creds **ret); +int sd_bus_get_description(sd_bus *bus, const char **description); +int sd_bus_get_tid(sd_bus *bus, pid_t *tid); -int sd_bus_send(sd_bus *bus, sd_bus_message *m, uint64_t *serial); -int sd_bus_send_with_reply(sd_bus *bus, sd_bus_message *m, sd_bus_message_handler_t callback, void *userdata, uint64_t usec, uint64_t *serial); -int sd_bus_send_with_reply_cancel(sd_bus *bus, uint64_t serial); -int sd_bus_send_with_reply_and_block(sd_bus *bus, sd_bus_message *m, uint64_t usec, sd_bus_error *error, sd_bus_message **r); +int sd_bus_send(sd_bus *bus, sd_bus_message *m, uint64_t *cookie); +int sd_bus_send_to(sd_bus *bus, sd_bus_message *m, const char *destination, uint64_t *cookie); +int sd_bus_call(sd_bus *bus, sd_bus_message *m, uint64_t usec, sd_bus_error *ret_error, sd_bus_message **reply); +int sd_bus_call_async(sd_bus *bus, sd_bus_slot **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 *timeout_usec); int sd_bus_process(sd_bus *bus, sd_bus_message **r); +int sd_bus_process_priority(sd_bus *bus, int64_t max_priority, sd_bus_message **r); int sd_bus_wait(sd_bus *bus, uint64_t timeout_usec); int sd_bus_flush(sd_bus *bus); +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_add_filter(sd_bus *bus, sd_bus_slot **slot, sd_bus_message_handler_t callback, void *userdata); +int sd_bus_add_match(sd_bus *bus, sd_bus_slot **slot, const char *match, sd_bus_message_handler_t callback, void *userdata); +int sd_bus_add_object(sd_bus *bus, sd_bus_slot **slot, const char *path, sd_bus_message_handler_t callback, void *userdata); +int sd_bus_add_fallback(sd_bus *bus, sd_bus_slot **slot, const char *prefix, sd_bus_message_handler_t callback, void *userdata); +int sd_bus_add_object_vtable(sd_bus *bus, sd_bus_slot **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 **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 **slot, const char *path, sd_bus_node_enumerator_t callback, void *userdata); +int sd_bus_add_object_manager(sd_bus *bus, sd_bus_slot **slot, const char *path); + +/* Slot object */ -int sd_bus_add_filter(sd_bus *bus, sd_bus_message_handler_t callback, void *userdata); -int sd_bus_remove_filter(sd_bus *bus, sd_bus_message_handler_t callback, void *userdata); +sd_bus_slot* sd_bus_slot_ref(sd_bus_slot *slot); +sd_bus_slot* sd_bus_slot_unref(sd_bus_slot *slot); -int sd_bus_add_object(sd_bus *bus, const char *path, sd_bus_message_handler_t callback, void *userdata); -int sd_bus_remove_object(sd_bus *bus, const char *path, sd_bus_message_handler_t callback, void *userdata); +sd_bus* sd_bus_slot_get_bus(sd_bus_slot *slot); -int sd_bus_add_fallback(sd_bus *bus, const char *prefix, sd_bus_message_handler_t callback, void *userdata); -int sd_bus_remove_fallback(sd_bus *bus, const char *prefix, sd_bus_message_handler_t callback, void *userdata); +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_add_match(sd_bus *bus, const char *match, sd_bus_message_handler_t callback, void *userdata); -int sd_bus_remove_match(sd_bus *bus, const char *match, sd_bus_message_handler_t callback, void *userdata); +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 *bus); +void *sd_bus_slot_get_current_userdata(sd_bus_slot *slot); /* Message object */ -int sd_bus_message_new_signal(sd_bus *bus, const char *path, const char *interface, const char *member, sd_bus_message **m); -int sd_bus_message_new_method_call(sd_bus *bus, const char *destination, const char *path, const char *interface, const char *member, sd_bus_message **m); -int sd_bus_message_new_method_return(sd_bus *bus, sd_bus_message *call, sd_bus_message **m); -int sd_bus_message_new_method_error(sd_bus *bus, sd_bus_message *call, const sd_bus_error *e, sd_bus_message **m); +int sd_bus_message_new_signal(sd_bus *bus, sd_bus_message **m, const char *path, const char *interface, const char *member); +int sd_bus_message_new_method_call(sd_bus *bus, sd_bus_message **m, 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 **m); +int sd_bus_message_new_method_error(sd_bus_message *call, sd_bus_message **m, const sd_bus_error *e); +int sd_bus_message_new_method_errorf(sd_bus_message *call, sd_bus_message **m, const char *name, const char *format, ...) _sd_printf_(4, 5); +int sd_bus_message_new_method_errno(sd_bus_message *call, sd_bus_message **m, int error, const sd_bus_error *e); +int sd_bus_message_new_method_errnof(sd_bus_message *call, sd_bus_message **m, 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_get_type(sd_bus_message *m, uint8_t *type); -int sd_bus_message_get_serial(sd_bus_message *m, uint64_t *serial); -int sd_bus_message_get_reply_serial(sd_bus_message *m, uint64_t *serial); -int sd_bus_message_get_no_reply(sd_bus_message *m); +int sd_bus_message_get_cookie(sd_bus_message *m, uint64_t *cookie); +int sd_bus_message_get_reply_cookie(sd_bus_message *m, uint64_t *cookie); +int sd_bus_message_get_priority(sd_bus_message *m, int64_t *priority); +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 *usec); +int sd_bus_message_get_realtime_usec(sd_bus_message *m, uint64_t *usec); +int sd_bus_message_get_seqnum(sd_bus_message *m, uint64_t* seqnum); -int sd_bus_message_get_uid(sd_bus_message *m, uid_t *uid); -int sd_bus_message_get_gid(sd_bus_message *m, gid_t *gid); -int sd_bus_message_get_pid(sd_bus_message *m, pid_t *pid); -int sd_bus_message_get_tid(sd_bus_message *m, pid_t *tid); -const char *sd_bus_message_get_label(sd_bus_message *m); +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_set_no_reply(sd_bus_message *m, int b); +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_priority(sd_bus_message *m, int64_t priority); int sd_bus_message_append(sd_bus_message *m, const char *types, ...); 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 **ptr); +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); +int sd_bus_message_append_string_space(sd_bus_message *m, size_t size, char **s); +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); +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_read_basic(sd_bus_message *m, char type, void *p); +int sd_bus_message_read_array(sd_bus_message *m, char type, const void **ptr, size_t *size); +int sd_bus_message_read_strv(sd_bus_message *m, char ***l); /* free the result! */ +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 *type, const char **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); -/* Convenience calls */ - -int sd_bus_emit_signal(sd_bus *bus, const char *path, const char *interface, const char *member, const char *types, ...); -int sd_bus_call_method(sd_bus *bus, const char *destination, const char *path, const char *interface, const char *member, sd_bus_error *error, sd_bus_message **reply, const char *types, ...); -int sd_bus_reply_method_return(sd_bus *bus, sd_bus_message *call, const char *types, ...); -int sd_bus_reply_method_error(sd_bus *bus, sd_bus_message *call, const sd_bus_error *e); - /* 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, int flags); +int sd_bus_request_name(sd_bus *bus, const char *name, uint64_t flags); int sd_bus_release_name(sd_bus *bus, const char *name); -int sd_bus_list_names(sd_bus *bus, char ***l); -int sd_bus_get_owner(sd_bus *bus, const char *name, char **owner); -int sd_bus_get_owner_uid(sd_bus *bus, const char *name, uid_t *uid); -int sd_bus_get_owner_pid(sd_bus *bus, const char *name, pid_t *pid); +int sd_bus_list_names(sd_bus *bus, char ***acquired, char ***activatable); /* free the results */ +int sd_bus_get_name_creds(sd_bus *bus, const char *name, uint64_t mask, sd_bus_creds **creds); /* unref the result! */ +int sd_bus_get_name_machine_id(sd_bus *bus, const char *name, sd_id128_t *machine); + +/* Convenience calls */ + +int sd_bus_call_method(sd_bus *bus, const char *destination, const char *path, const char *interface, const char *member, sd_bus_error *ret_error, sd_bus_message **reply, 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 *ret_error, sd_bus_message **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 *ret_error, char type, void *ret_ptr); +int sd_bus_get_property_string(sd_bus *bus, const char *destination, const char *path, const char *interface, const char *member, sd_bus_error *ret_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 *ret_error, char ***ret); /* free the result! */ +int sd_bus_set_property(sd_bus *bus, const char *destination, const char *path, const char *interface, const char *member, sd_bus_error *ret_error, const char *ret_type, ...); + +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_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_errnof(sd_bus_message *call, int error, const char *format, ...) _sd_printf_(3, 4); + +int sd_bus_emit_signal(sd_bus *bus, 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_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 *call, uint64_t mask, sd_bus_creds **creds); +int sd_bus_query_sender_privilege(sd_bus_message *call, int capability); + +/* Credential handling */ + +int sd_bus_creds_new_from_pid(sd_bus_creds **ret, pid_t pid, 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); + +int sd_bus_creds_get_pid(sd_bus_creds *c, pid_t *pid); +int sd_bus_creds_get_pid_starttime(sd_bus_creds *c, uint64_t *usec); +int sd_bus_creds_get_tid(sd_bus_creds *c, pid_t *tid); +int sd_bus_creds_get_uid(sd_bus_creds *c, uid_t *uid); +int sd_bus_creds_get_gid(sd_bus_creds *c, gid_t *gid); +int sd_bus_creds_get_comm(sd_bus_creds *c, const char **comm); +int sd_bus_creds_get_tid_comm(sd_bus_creds *c, const char **comm); +int sd_bus_creds_get_exe(sd_bus_creds *c, const char **exe); +int sd_bus_creds_get_cmdline(sd_bus_creds *c, char ***cmdline); +int sd_bus_creds_get_cgroup(sd_bus_creds *c, const char **cgroup); +int sd_bus_creds_get_unit(sd_bus_creds *c, const char **unit); +int sd_bus_creds_get_user_unit(sd_bus_creds *c, const char **unit); +int sd_bus_creds_get_slice(sd_bus_creds *c, const char **slice); +int sd_bus_creds_get_session(sd_bus_creds *c, const char **session); +int sd_bus_creds_get_owner_uid(sd_bus_creds *c, uid_t *uid); +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 **context); +int sd_bus_creds_get_audit_session_id(sd_bus_creds *c, uint32_t *sessionid); +int sd_bus_creds_get_audit_login_uid(sd_bus_creds *c, uid_t *loginuid); +int sd_bus_creds_get_unique_name(sd_bus_creds *c, const char **name); +int sd_bus_creds_get_well_known_names(sd_bus_creds *c, char ***names); +int sd_bus_creds_get_description(sd_bus_creds *c, const char **name); /* Error structures */ -#define SD_BUS_ERROR_NULL ((sd_bus_error) {NULL, NULL, 0}) -#define SD_BUS_ERROR_MAKE(name, message) ((sd_bus_error) {(name), (message), 0}) +struct sd_bus_name_error_mapping { + const char* name; + int code; +}; +typedef struct sd_bus_name_error_mapping sd_bus_name_error_mapping; + +#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) + +#ifndef SD_BUS_ERROR_MAPPING +# define _SD_BUS_ERROR_XCONCAT(x, y) x ## y +# define _SD_BUS_ERROR_CONCAT(x, y) _SD_BUS_ERROR_XCONCAT(x, y) +# define SD_BUS_ERROR_MAPPING(name) \ + __attribute((__section__("sd_bus_errnomap"))) \ + __attribute((__used__)) \ + const sd_bus_name_error_mapping _SD_BUS_ERROR_CONCAT(_sd_bus_errno_mapping_, name)[] +# define SD_BUS_ERROR_MAPPING_USE(name) \ + extern \ + const sd_bus_name_error_mapping _SD_BUS_ERROR_CONCAT(_sd_bus_errno_mapping_, name)[]; \ + __attribute((__used__)) \ + static const sd_bus_name_error_mapping* \ + _SD_BUS_ERROR_CONCAT(sd_bus_name_error_mapping_ref, __COUNTER__) \ + = _SD_BUS_ERROR_CONCAT(_sd_bus_errno_mapping_, name); +#endif + void sd_bus_error_free(sd_bus_error *e); -int sd_bus_error_set(sd_bus_error *e, const char *name, const char *format, ...); -void sd_bus_error_set_const(sd_bus_error *e, const char *name, const char *message); +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_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_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_is_set(const sd_bus_error *e); int sd_bus_error_has_name(const sd_bus_error *e, const char *name); -#ifdef __cplusplus -} -#endif +/* 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_path); +int sd_bus_path_decode(const char *path, const char *prefix, char **ret_external_id); + +/* Tracking peers */ + +int sd_bus_track_new(sd_bus *bus, sd_bus_track **track, 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); + +unsigned sd_bus_track_count(sd_bus_track *track); +const char* sd_bus_track_contains(sd_bus_track *track, const char *names); +const char* sd_bus_track_first(sd_bus_track *track); +const char* sd_bus_track_next(sd_bus_track *track); + +_SD_END_DECLARATIONS; #endif