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// This file is part of linux-support. It is subject to the license terms in the COPYRIGHT file found in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/linux-support/master/COPYRIGHT. No part of linux-support, including this file, may be copied, modified, propagated, or distributed except according to the terms contained in the COPYRIGHT file.
// Copyright © 2020 The developers of linux-support. See the COPYRIGHT file in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/linux-support/master/COPYRIGHT.
/// Can not exceed `u16::MAX`.
///
/// Amount of time to linger in the TCP state FIN-WAIT2.
#[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
#[derive(Deserialize, Serialize)]
#[repr(transparent)]
pub struct FinishTimeoutSeconds(pub u16);
impl Default for FinishTimeoutSeconds
{
#[inline(always)]
fn default() -> Self
{
Self::Default
}
}
impl FinishTimeoutSeconds
{
/// From `/proc/sys/net/ipv4/tcp_fin_timeout`.
pub const Default: Self = Self(60);
/// Inclusive minimum.
pub const InclusiveMinimum: Self = Self(0);
/// Inclusive maximum.
pub const InclusiveMaximum: Self = Self(u16::MAX);
/// Value of `/proc/sys/net/ipv4/tcp_fin_timeout`.
#[inline(always)]
pub fn global_default(proc_path: &ProcPath) -> Self
{
Self(Self::sys_net_ipv4_tcp_fin_timeout_file_path(proc_path).read_value().unwrap())
}
/// Set value of `/proc/sys/net/ipv4/tcp_fin_timeout` if it exists.
#[inline(always)]
pub fn set_global_default(self, proc_path: &ProcPath) -> io::Result<()>
{
assert_effective_user_id_is_root("write to `/proc/sys/net/ipv4/tcp_fin_timeout`");
let file_path = Self::sys_net_ipv4_tcp_fin_timeout_file_path(proc_path);
if file_path.exists()
{
file_path.write_value(UnpaddedDecimalInteger(self.0))
}
else
{
Ok(())
}
}
#[inline(always)]
fn sys_net_ipv4_tcp_fin_timeout_file_path(proc_path: &ProcPath) -> PathBuf
{
proc_path.sys_net_ipv4_file_path("tcp_fin_timeout")
}
}