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/** LXC attach function type. */
pub use lxc_sys::lxc_attach_exec_t as ExecFn;

/** LXC attach options for lxc::Container::attach(). */
pub use lxc_sys::lxc_attach_options_t as Options;

bitflags::bitflags! {
    /** LXC environment policy. */
    pub struct EnvPolicy: i32 {
        /** Retain the environment */
        const KEEP_ENV = lxc_sys::lxc_attach_env_policy_t_LXC_ATTACH_KEEP_ENV as i32;
        /** Clear the environment */
        const CLEAR_ENV = lxc_sys::lxc_attach_env_policy_t_LXC_ATTACH_CLEAR_ENV as i32;
    }
}

/**
 * Run a command in the container.
 *
 * Returns exit code program on success.
 */
pub fn run_command(payload: &mut std::os::raw::c_void) -> Result<i32, ()> {
    let result = unsafe { lxc_sys::lxc_attach_run_command(payload) };

    if result == -1 {
        Err(())
    } else {
        Ok(result)
    }
}

/**
 * Run a shell command in the container.
 *
 * `_payload` parameter is not used.
 *
 * Returns exit code of shell.
 */
pub fn run_shell(_payload: &mut std::os::raw::c_void) -> i32 {
    unsafe { lxc_sys::lxc_attach_run_shell(_payload) }
}