renet/src/phy/sys/mod.rs

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2016-12-11 07:15:26 +08:00
use libc;
use std::io;
#[cfg(target_os = "linux")]
#[path = "linux.rs"]
mod imp;
#[cfg(feature = "raw_socket")]
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pub mod raw_socket;
#[cfg(all(feature = "tap_interface", target_os = "linux"))]
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pub mod tap_interface;
#[cfg(feature = "raw_socket")]
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pub use self::raw_socket::RawSocketDesc;
#[cfg(all(feature = "tap_interface", target_os = "linux"))]
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pub use self::tap_interface::TapInterfaceDesc;
#[repr(C)]
#[derive(Debug)]
struct ifreq {
ifr_name: [libc::c_char; libc::IF_NAMESIZE],
ifr_data: libc::c_int /* ifr_ifindex or ifr_mtu */
}
fn ifreq_for(name: &str) -> ifreq {
let mut ifreq = ifreq {
ifr_name: [0; libc::IF_NAMESIZE],
ifr_data: 0
};
for (i, byte) in name.as_bytes().iter().enumerate() {
ifreq.ifr_name[i] = *byte as libc::c_char
}
ifreq
}
fn ifreq_ioctl(lower: libc::c_int, ifreq: &mut ifreq,
cmd: libc::c_ulong) -> io::Result<libc::c_int> {
unsafe {
let res = libc::ioctl(lower, cmd, ifreq as *mut ifreq);
if res == -1 { return Err(io::Error::last_os_error()) }
}
Ok(ifreq.ifr_data)
}