117 lines · 4.4 KB · Rust
RawDownload
// SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)/* Based on: Documentation/netlink/specs/binder.yaml */ #![allow(unreachable_pub, clippy::wrong_self_convention)]use kernel::{    net::netlink::{        Family,        GenlMsg,        MulticastGroup,        NetlinkSkBuff, //    },    prelude::*, //}; pub static BINDER_NL_FAMILY: Family = Family::const_new(    kernel::module::this_module::<crate::LocalModule>(),    kernel::uapi::BINDER_FAMILY_NAME,    kernel::uapi::BINDER_FAMILY_VERSION,    &BINDER_NL_FAMILY_MCGRPS,); static BINDER_NL_FAMILY_MCGRPS: [MulticastGroup; 1] = [MulticastGroup::const_new(c"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.pub struct Report {    skb: GenlMsg,} impl Report {    /// Create a new multicast message.    pub fn new(        size: usize,        portid: u32,        seq: u32,        flags: kernel::alloc::Flags,    ) -> Result<Self, kernel::alloc::AllocError> {        const BINDER_CMD_REPORT: u8 = kernel::uapi::BINDER_CMD_REPORT as u8;        let skb = NetlinkSkBuff::new(size, flags)?;        let skb = skb.genlmsg_put(portid, seq, &BINDER_NL_FAMILY, BINDER_CMD_REPORT)?;        Ok(Self { skb })    }     /// Broadcast this message.    pub fn multicast(self, portid: u32, flags: kernel::alloc::Flags) -> Result {        self.skb.multicast(&BINDER_NL_FAMILY, portid, 0, flags)    }     /// Check if this message type has listeners.    pub fn has_listeners() -> bool {        BINDER_NL_FAMILY.has_listeners(0)    }     /// The enum binder_driver_return_protocol returned to the sender.    pub fn error(&mut self, val: u32) -> Result {        const BINDER_A_REPORT_ERROR: c_int = kernel::uapi::BINDER_A_REPORT_ERROR as c_int;        self.skb.put_u32(BINDER_A_REPORT_ERROR, val)    }     /// The binder context where the transaction occurred.    pub fn context(&mut self, val: &CStr) -> Result {        const BINDER_A_REPORT_CONTEXT: c_int = kernel::uapi::BINDER_A_REPORT_CONTEXT as c_int;        self.skb.put_string(BINDER_A_REPORT_CONTEXT, val)    }     /// The PID of the sender process.    pub fn from_pid(&mut self, val: u32) -> Result {        const BINDER_A_REPORT_FROM_PID: c_int = kernel::uapi::BINDER_A_REPORT_FROM_PID as c_int;        self.skb.put_u32(BINDER_A_REPORT_FROM_PID, val)    }     /// The TID of the sender thread.    pub fn from_tid(&mut self, val: u32) -> Result {        const BINDER_A_REPORT_FROM_TID: c_int = kernel::uapi::BINDER_A_REPORT_FROM_TID as c_int;        self.skb.put_u32(BINDER_A_REPORT_FROM_TID, val)    }     /// The PID of the recipient process. This attribute may not be present    /// if the target could not be determined.    pub fn to_pid(&mut self, val: u32) -> Result {        const BINDER_A_REPORT_TO_PID: c_int = kernel::uapi::BINDER_A_REPORT_TO_PID as c_int;        self.skb.put_u32(BINDER_A_REPORT_TO_PID, val)    }     /// The TID of the recipient thread. This attribute may not be present    /// if the target could not be determined.    pub fn to_tid(&mut self, val: u32) -> Result {        const BINDER_A_REPORT_TO_TID: c_int = kernel::uapi::BINDER_A_REPORT_TO_TID as c_int;        self.skb.put_u32(BINDER_A_REPORT_TO_TID, val)    }     /// When present, indicates the failed transaction is a reply.    pub fn is_reply(&mut self) -> Result {        const BINDER_A_REPORT_IS_REPLY: c_int = kernel::uapi::BINDER_A_REPORT_IS_REPLY as c_int;        self.skb.put_flag(BINDER_A_REPORT_IS_REPLY)    }     /// The bitmask of enum transaction_flags from the transaction.    pub fn flags(&mut self, val: u32) -> Result {        const BINDER_A_REPORT_FLAGS: c_int = kernel::uapi::BINDER_A_REPORT_FLAGS as c_int;        self.skb.put_u32(BINDER_A_REPORT_FLAGS, val)    }     /// The application-defined code from the transaction.    pub fn code(&mut self, val: u32) -> Result {        const BINDER_A_REPORT_CODE: c_int = kernel::uapi::BINDER_A_REPORT_CODE as c_int;        self.skb.put_u32(BINDER_A_REPORT_CODE, val)    }     /// The transaction payload size in bytes.    pub fn data_size(&mut self, val: u32) -> Result {        const BINDER_A_REPORT_DATA_SIZE: c_int = kernel::uapi::BINDER_A_REPORT_DATA_SIZE as c_int;        self.skb.put_u32(BINDER_A_REPORT_DATA_SIZE, val)    }}