sd_bus_message_verify_type

systemd

sd_bus_message_verify_type

3

sd_bus_message_verify_type

Check if the message has specified type at the current location

#include <systemd/sd-bus.h>

int sd_bus_message_verify_type

sd_bus_message *

m

char

type

const char*

contents

Description

sd_bus_message_verify_type() checks if the complete type at the current location in the message m matches the specified type and contents. If non-zero, parameter type must be one of the types specified in sd_bus_message_append(3). If non-null, parameter contents must be a valid sequence of complete types. If both type and contents are specified type must be a container type.

If type is specified, the type in the message must match. If contents is specified, the type in the message must be a container type with this signature.

Return Value

On success, this call returns true if the type matches and zero if not (the message m contains different data or the end of the message has been reached). On failure, it returns a negative errno-style error code.

Errors

Returned errors may indicate the following problems:

-EINVAL
m or both type and contents are NULL.

Arguments do not satisfy other constraints listed above.

-EPERM
Message m is not sealed.

See Also

systemd(1), sd-bus(3), sd_bus_message_append(3)