Function configure_pointer_authentication_keys

src/process/prctl.rs:1108–1137

(
    config: Config,
)

#[doc(alias = "PR_PAC_SET_ENABLED_KEYS")]
#[cfg(linux_raw_dep)]
pub unsafe fn configure_pointer_authentication_keys<
    Config: Iterator<Item = (PointerAuthenticationKeys, bool)>,
>(
    config: Config,
) -> io::Result<()> {
    let mut affected_keys: u32 = 0;
    let mut enabled_keys: u32 = 0;

    for (key, enable) in config {
        let key = key.bits();
        affected_keys |= key;

        if enable {
            enabled_keys |= key;
        } else {
            enabled_keys &= !key;
        }
    }

    if affected_keys == 0 {
        return Ok(()); // Nothing to do.
    }

    prctl_3args(
        PR_PAC_SET_ENABLED_KEYS,
        affected_keys as usize as *mut _,
        enabled_keys as usize as *mut _,
    )
    .map(|_r| ())
}

//
// PR_SET_VMA