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use std::error::Error;
use neli::{
attr::Attribute,
consts::{genl::*, nl::*, socket::*},
genl::{Genlmsghdr, GenlmsghdrBuilder},
nl::NlPayload,
router::synchronous::NlRouter,
types::{Buffer, GenlBuffer},
utils::Groups,
};
const GENL_VERSION: u8 = 2;
// This example attempts to mimic the "genl ctrl list" command. For simplicity, it only outputs
// the name and identifier of each generic netlink family.
fn main() -> Result<(), Box<dyn Error>> {
env_logger::init();
let (socket, _) = NlRouter::connect(NlFamily::Generic, None, Groups::empty())?;
let recv = socket.send::<_, _, NlTypeWrapper, Genlmsghdr<CtrlCmd, CtrlAttr>>(
GenlId::Ctrl,
NlmF::DUMP,
NlPayload::Payload(
GenlmsghdrBuilder::default()
.cmd(CtrlCmd::Getfamily)
.version(GENL_VERSION)
.attrs(GenlBuffer::<u16, Buffer>::new())
.build()?,
),
)?;
for response_result in recv {
let response = response_result?;
if let Some(p) = response.get_payload() {
let handle = p.attrs().get_attr_handle();
for attr in handle.iter() {
match attr.nla_type().nla_type() {
CtrlAttr::FamilyName => {
println!("{}", attr.get_payload_as_with_len::<String>()?);
}
CtrlAttr::FamilyId => {
println!("\tID: 0x{:x}", attr.get_payload_as::<u16>()?);
}
_ => (),
}
}
}
}
Ok(())
}
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