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// This file is part of linux-support. It is subject to the license terms in the COPYRIGHT file found in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/linux-support/master/COPYRIGHT. No part of linux-support, including this file, may be copied, modified, propagated, or distributed except according to the terms contained in the COPYRIGHT file.
// Copyright © 2020 The developers of linux-support. See the COPYRIGHT file in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/linux-support/master/COPYRIGHT.
/// A stack frame.
#[repr(C)]
#[derive(Default, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub struct bpf_stack_build_id
{
/// How to interpret `offset_or_instruction_pointer`:-
///
/// * `BPF_STACK_BUILD_ID_EMPTY`: `offset_or_instruction_pointer` is unused.
/// * `BPF_STACK_BUILD_ID_VALID`: `offset_or_instruction_pointer.offset` is valid.
/// * `BPF_STACK_BUILD_ID_IP`: `offset_or_instruction_pointer.ip` (instruction pointer) is valid.
status: bpf_stack_build_id_status,
pub(crate) build_id: [c_uchar; Self::BPF_BUILD_ID_SIZE],
offset_or_instruction_pointer: OffsetOrInstructionPointer,
}
impl Debug for bpf_stack_build_id
{
#[inline(always)]
fn fmt(&self, f: &mut Formatter) -> fmt::Result
{
write!(f, "bpf_stack_build_id {{ status: {:?}, build_id: {:?}, offset_or_instruction_pointer: {:?} }}", self.status, self.build_id, self.offset_or_instruction_pointer)
}
}
impl bpf_stack_build_id
{
pub(crate) const BPF_BUILD_ID_SIZE: usize = 20;
/// Left is offset; right is instruction pointer.
#[allow(dead_code)]
#[inline(always)]
pub fn offset_or_instruction_pointer(&self) -> Option<Either<u64, InstructionPointer>>
{
use self::bpf_stack_build_id_status::*;
match self.status
{
BPF_STACK_BUILD_ID_EMPTY => None,
BPF_STACK_BUILD_ID_VALID => Some(Left(unsafe { self.offset_or_instruction_pointer.offset })),
BPF_STACK_BUILD_ID_IP => Some(Right(unsafe { self.offset_or_instruction_pointer.ip })),
}
}
}