NAME
sd_bus_reply_method_return, sd_bus_reply_method_returnv - Reply to a D-Bus method call
SYNOPSIS
#include <systemd/sd-bus.h>
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int sd_bus_reply_method_return(sd_bus_message *call, const char *types, ...); | |
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int sd_bus_reply_method_returnv(sd_bus_message *call, const char *types, va_list ap); |
DESCRIPTION
sd_bus_reply_method_return() sends a reply to the call message. The type string types and the arguments that follow it must adhere to the format described in sd_bus_message_append(3). If no reply is expected to call, this function succeeds without sending a reply.
RETURN VALUE
On success, this function returns a non-negative integer. 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.
Message m is not a method reply message.
Added in version 246.
-EPERM
Message call has been sealed.
Added in version 246.
-ENOTCONN
The bus to which message call is attached is not connected.
Added in version 246.
-ENOMEM
Memory allocation failed.
Added in version 246.
In addition, any error returned by sd_bus_send(1) may be returned.
NOTES
Functions described here are available as a shared library, which can be compiled against and linked to with the libsystemd pkg-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.