Function try_decode_c_uint

src/backend/linux_raw/io/errno.rs:117–127

(
    raw: RetReg<Num>,
)

/// `c::c_uint` on success.
#[inline]
pub(in crate::backend) fn try_decode_c_uint<Num: RetNumber>(
    raw: RetReg<Num>,
) -> io::Result<c::c_uint> {
    if raw.is_in_range(-4095..0) {
        // SAFETY: `raw` must be in `-4095..0`, and we just checked that raw is
        // in that range.
        return Err(unsafe { Errno(raw.decode_error_code()) });
    }

    Ok(raw.decode_c_uint())
}

/// Check for an error from the result of a syscall which encodes a `usize` on
/// success.