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Implement TunInterfaceOptions

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dav 2023-06-24 09:24:19 -07:00 • committed by David Zhong
parent da065b503f
commit 84f1d91d5c
6 changed files with 83 additions and 9 deletions
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27
tun/src/unix/linux/mod.rs
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@ -12,7 +12,7 @@ use log::info;
use libc::in6_ifreq;
use super::{ifname_to_string, string_to_ifname};
use super::{ifname_to_string, string_to_ifname, TunInterfaceOptions};
mod sys;
@ -24,16 +24,33 @@ pub struct TunInterface {
impl TunInterface {
#[throws]
pub fn new() -> TunInterface {
Self::new_with_options(TunInterfaceOptions::new())?
}
#[throws]
pub(crate) fn new_with_options(options: TunInterfaceOptions) -> TunInterface {
let file = OpenOptions::new()
.read(true)
.write(true)
.open("/dev/net/tun")?;
let mut flags = libc::IFF_TUN as i16;
if options.no_pi.is_some() {
flags |= libc::IFF_NO_PI as i16;
}
if options.tun_excl.is_some() {
flags |= libc::IFF_TUN_EXCL as i16;
}
let name = options
.name
.map(|name| string_to_ifname(&name))
.unwrap_or([0; libc::IFNAMSIZ]);
let iff = libc::ifreq {
ifr_name: [0; libc::IFNAMSIZ],
ifr_ifru: libc::__c_anonymous_ifr_ifru {
ifru_flags: (libc::IFF_TUN | libc::IFF_TUN_EXCL | libc::IFF_NO_PI) as i16,
},
ifr_name: name,
ifr_ifru: libc::__c_anonymous_ifr_ifru { ifru_flags: flags },
};
unsafe { sys::tun_set_iff(file.as_raw_fd(), &iff)? };