инициализировать объект сообщения шины и вызвать соответствующий вызов метода D-Bus (initialize a bus message object and invoke the corresponding D-Bus method call)
Имя (Name)
sd_bus_call_method, sd_bus_call_methodv,
sd_bus_call_method_async, sd_bus_call_method_asyncv - Initialize
a bus message object and invoke the corresponding D-Bus method
call
Синопсис (Synopsis)
#include <systemd/sd-bus.h>
typedef int (*sd_bus_message_handler_t)(sd_bus_message *m,
void *userdata,
sd_bus_error *ret_error);
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_call_methodv(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, va_list ap);
int sd_bus_call_method_async(sd_bus *bus, sd_bus_slot **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_call_method_asyncv(sd_bus *bus, sd_bus_slot **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);
Описание (Description)
sd_bus_call_method() is a convenience function for initializing a
bus message object and calling the corresponding D-Bus method. It
combines the sd_bus_message_new_method_call(3),
sd_bus_message_append(3) and sd_bus_call(3) functions into a
single function call.
sd_bus_call_method_async() is a convenience function for
initializing a bus message object and calling the corresponding
D-Bus method asynchronously. It combines the
sd_bus_message_new_method_call(3), sd_bus_message_append(3) and
sd_bus_call_async(3) functions into a single function call.
Возвращаемое значение (Return value)
On success, these functions return a non-negative integer. On
failure, they return a negative errno-style error code.
Errors
See the man pages of sd_bus_message_new_method_call(3),
sd_bus_message_append(3), sd_bus_call(3) and sd_bus_call_async(3)
for a list of possible errors.
Примечание (Note)
These APIs are implemented as a shared library, which can be
compiled and linked to with the libsystemd pkg-config(1) file.
Смотри также (See also)
systemd(1), sd-bus(3), sd_bus_message_new_method_call(3),
sd_bus_message_append(3), sd_bus_call(3), sd_bus_set_property(3),
sd_bus_emit_signal(3)
