| // Copyright lowRISC contributors. |
| // Licensed under the Apache License, Version 2.0, see LICENSE for details. |
| // SPDX-License-Identifier: Apache-2.0 |
| |
| use anyhow::{Context, Result}; |
| use nix::errno::Errno; |
| use nix::libc::{c_int, c_ulong}; |
| use nix::sys::signal::Signal; |
| |
| #[link(name = "c")] |
| extern "C" { |
| fn prctl(option: c_int, arg2: c_ulong, arg3: c_ulong, arg4: c_ulong, arg5: c_ulong) -> c_int; |
| } |
| |
| pub fn request_parent_death_signal(signal: Signal) -> Result<()> { |
| const PR_SET_PDEATHSIG: c_int = 1; |
| let res = unsafe { prctl(PR_SET_PDEATHSIG, signal as c_ulong, 0, 0, 0) }; |
| if res != 0 { |
| Err(Errno::last()).context("prctl(PR_SET_PDEATHSIG)") |
| } else { |
| Ok(()) |
| } |
| } |
