Documentation/netlink/specs/binder.yaml

# SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)
#
# Copyright 2025 Google LLC
#
---
name: binder
protocol: genetlink
uapi-header: linux/android/binder_netlink.h
doc: Binder interface over generic netlink

attribute-sets:
  -
    name: report
    doc: |
      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.

    attributes:
      -
        name: error
        type: u32
        doc: The enum binder_driver_return_protocol returned to the sender.
      -
        name: context
        type: string
        doc: The binder context where the transaction occurred.
      -
        name: from-pid
        type: u32
        doc: The PID of the sender process.
      -
        name: from-tid
        type: u32
        doc: The TID of the sender thread.
      -
        name: to-pid
        type: u32
        doc: |
          The PID of the recipient process. This attribute may not be present
          if the target could not be determined.
      -
        name: to-tid
        type: u32
        doc: |
          The TID of the recipient thread. This attribute may not be present
          if the target could not be determined.
      -
        name: is-reply
        type: flag
        doc: When present, indicates the failed transaction is a reply.
      -
        name: flags
        type: u32
        doc: The bitmask of enum transaction_flags from the transaction.
      -
        name: code
        type: u32
        doc: The application-defined code from the transaction.
      -
        name: data-size
        type: u32
        doc: The transaction payload size in bytes.

operations:
  list:
    -
      name: report
      doc: |
        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

mcast-groups:
  list:
    -
      name: report