sd_bus_reply_method_error, sd_bus_reply_method_errorf, sd_bus_reply_method_errorfv,

Description

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_method_error(3). If no reply is expected to call, this function succeeds without sending a 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().

Name

sd_bus_reply_method_error, sd_bus_reply_method_errorf, sd_bus_reply_method_errorfv, sd_bus_reply_method_errno, sd_bus_reply_method_errnof, sd_bus_reply_method_errnofv - Reply with an error to a D-Bus method call

Notes

Functions described here are available as a shared library, which can be compiled against and linked to with the libsystemdpkg-config(1) file. The code described here uses getenv(3), which is declared to be not multi-thread-safe. This means that the code calling the functions described here must not call setenv(3) from a parallel thread. It is recommended to only do calls to setenv() from an early phase of the program when no other threads have been started.

Return Value

This function returns a non-negative integer if the error reply was successfully sent or if call does not expect a reply. On failure, it returns a negative errno-style error code. Errors Returned errors may indicate the following problems: -EINVAL The input parameter call is NULL. Message call is not a method call message. Message call is not attached to a bus. The error parameter e to sd_bus_reply_method_error() is not set, see sd_bus_error_is_set(3). -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 returned by sd_bus_send(3) may be returned.

Synopsis

#include<systemd/sd-bus.h>intsd_bus_reply_method_error(sd_bus_message*call,constsd_bus_error*e);intsd_bus_reply_method_errorf(sd_bus_message*call,constchar*name,constchar*format,...);intsd_bus_reply_method_errorfv(sd_bus_message*call,constchar*name,constchar*format,va_listap);intsd_bus_reply_method_errno(sd_bus_message*call,interror,constsd_bus_error*p);intsd_bus_reply_method_errnof(sd_bus_message*call,interror,constchar*format,...);intsd_bus_reply_method_errnofv(sd_bus_message*call,interror,constchar*format,va_listap);