systemd sd_bus_reply_method_error 3 sd_bus_reply_method_error sd_bus_reply_method_errorf sd_bus_reply_method_errno sd_bus_reply_method_errnof Reply with an error to a method call #include <systemd/sd-bus.h> 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 … int sd_bus_reply_method_errno sd_bus_message *call int error const sd_bus_error *p int sd_bus_reply_method_errnof sd_bus_message *call int error const char *format … The sd_bus_reply_method_error() function sends an error reply to the call message. The error structure e specifies the error to send, and is used as described in sd_bus_message_new_error3. If no reply is expected to call, this function returns success without sending reply. The sd_bus_reply_method_errorf() is to sd_bus_reply_method_error() what sd_bus_message_new_method_errorf() is to sd_bus_message_new_method_error(). The sd_bus_reply_method_errno() is to sd_bus_reply_method_error() what sd_bus_message_new_method_errno() is to sd_bus_message_new_method_error(). The sd_bus_reply_method_errnof() is to sd_bus_reply_method_error() what sd_bus_message_new_method_errnof() is to sd_bus_message_new_method_error(). These functions return 0 if the error reply was successfully sent or if none was expected, and a negative errno-style error code otherwise. Returned errors may indicate the following problems: -EINVAL The call message call is NULL. Message call is not a method call message. Message call is not attached to a bus. The error error parameter to sd_bus_reply_method_error is not set, see sd_bus_error_is_set3. -EPERM Message call has been sealed. -ENOTCONN The bus to which message call is attached is not connected. -ENOMEM Memory allocation failed. In addition, any error message returned by sd_bus_send1 may be returned. systemd1, sd-bus3, sd_bus_message_new_method_error3