Family binder netlink specification

Summary

Binder interface over generic netlink

Operations

report

A multicast event sent to userspace subscribers to notify them about binder transaction failures. The generated report provides the full details of the specific transaction that failed. The intention is for programs to monitor these events and react to the failures as needed.

attribute-set:

report

mcgrp:

report

event:

{‘attributes’: [‘error’, ‘context’, ‘from-pid’, ‘from-tid’, ‘to-pid’, ‘to-tid’, ‘is-reply’, ‘flags’, ‘code’, ‘data-size’], ‘__lineno__’: 77}

Multicast groups

• report

Attribute sets

report

Attributes included within a transaction failure report. The elements correspond directly with the specific transaction that failed, along with the error returned to the sender e.g. BR_DEAD_REPLY.

error (u32)

doc:

The enum binder_driver_return_protocol returned to the sender.

context (string)

doc:

The binder context where the transaction occurred.

from-pid (u32)

doc:

The PID of the sender process.

from-tid (u32)

doc:

The TID of the sender thread.

to-pid (u32)

doc:

The PID of the recipient process. This attribute may not be present if the target could not be determined.

to-tid (u32)

doc:

The TID of the recipient thread. This attribute may not be present if the target could not be determined.

is-reply (flag)

doc:

When present, indicates the failed transaction is a reply.

flags (u32)

doc:

The bitmask of enum transaction_flags from the transaction.

code (u32)

doc:

The application-defined code from the transaction.

data-size (u32)

doc:

The transaction payload size in bytes.