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_error(3).
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_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 message returned by sd_bus_send(1) may be returned.
These APIs are implemented as a shared
library, which can be compiled and linked to with the
libsystemd
pkg-config(1)
file.