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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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// Copyright (C) 2025 Google LLC.
use kernel::fmt;use kernel::prelude::*;
use crate::defs::*;
pub(crate) type BinderResult<T = ()> = core::result::Result<T, BinderError>;
/// An error that will be returned to userspace via the `BINDER_WRITE_READ` ioctl rather than via/// errno.pub(crate) struct BinderError { pub(crate) reply: u32, pub(crate) source: Option<Error>,}
impl BinderError { pub(crate) fn new_dead() -> Self { Self { reply: BR_DEAD_REPLY, source: None, } }
pub(crate) fn new_frozen() -> Self { Self { reply: BR_FROZEN_REPLY, source: None, } }
pub(crate) fn new_frozen_oneway() -> Self { Self { reply: BR_TRANSACTION_PENDING_FROZEN, source: None, } }
pub(crate) fn is_dead(&self) -> bool { self.reply == BR_DEAD_REPLY }}
/// Convert an errno into a `BinderError` and store the errno used to construct it. The errno/// should be stored as the thread's extended error when given to userspace.impl From<Error> for BinderError { fn from(source: Error) -> Self { Self { reply: BR_FAILED_REPLY, source: Some(source), } }}
impl From<kernel::fs::file::BadFdError> for BinderError { fn from(source: kernel::fs::file::BadFdError) -> Self { BinderError::from(Error::from(source)) }}
impl From<kernel::alloc::AllocError> for BinderError { fn from(_: kernel::alloc::AllocError) -> Self { Self { reply: BR_FAILED_REPLY, source: Some(ENOMEM), } }}
impl fmt::Debug for BinderError { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { match self.reply { BR_FAILED_REPLY => match self.source.as_ref() { Some(source) => source.fmt(f), None => f.pad("BR_FAILED_REPLY"), }, BR_DEAD_REPLY => f.pad("BR_DEAD_REPLY"), BR_FROZEN_REPLY => f.pad("BR_FROZEN_REPLY"), BR_TRANSACTION_PENDING_FROZEN => f.pad("BR_TRANSACTION_PENDING_FROZEN"), BR_TRANSACTION_COMPLETE => f.pad("BR_TRANSACTION_COMPLETE"), _ => match self.source.as_ref() { Some(source) => source.fmt(f), None => self.reply.fmt(f), }, } }}