capctl 0.1.0

A pure-Rust interface to prctl() and Linux capabilities.
Documentation 
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use std::io;

mod constants;
mod externs;

pub mod caps;
pub mod prctl;

#[inline]
unsafe fn raw_prctl(
    option: libc::c_int,
    arg2: libc::c_ulong,
    arg3: libc::c_ulong,
    arg4: libc::c_ulong,
    arg5: libc::c_ulong,
) -> io::Result<libc::c_int> {
    let res = libc::prctl(option, arg2, arg3, arg4, arg5);

    if res >= 0 {
        Ok(res)
    } else {
        Err(io::Error::last_os_error())
    }
}

#[inline]
unsafe fn raw_prctl_opt(
    option: libc::c_int,
    arg2: libc::c_ulong,
    arg3: libc::c_ulong,
    arg4: libc::c_ulong,
    arg5: libc::c_ulong,
) -> Option<libc::c_int> {
    let res = libc::prctl(option, arg2, arg3, arg4, arg5);

    if res >= 0 {
        Some(res)
    } else {
        None
    }
}