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Bug fix for android platform, because of the wrong behavior of CMSG_NXTHDR

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This commit is contained in:
LinkTed 2020-11-24 19:24:39 +01:00
parent ead7185db6
commit 9b9dd4aeea
1 changed files with 19 additions and 0 deletions
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19
library/std/src/sys/unix/ext/net/ancillary.rs
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@ -5,6 +5,8 @@ use crate::marker::PhantomData;
use crate::mem::{size_of, zeroed};
use crate::os::unix::io::RawFd;
use crate::path::Path;
#[cfg(target_os = "android")]
use crate::ptr::eq;
use crate::ptr::read_unaligned;
use crate::slice::from_raw_parts;
use crate::sys::net::Socket;
@ -157,6 +159,13 @@ fn add_to_ancillary_data<T>(
while !cmsg.is_null() {
previous_cmsg = cmsg;
cmsg = libc::CMSG_NXTHDR(&msg, cmsg);
cfg_if::cfg_if! {
if #[cfg(target_os = "android")] {
if cmsg == previous_cmsg {
break;
}
}
}
}
if previous_cmsg.is_null() {
@ -420,6 +429,16 @@ impl<'a> Iterator for Messages<'a> {
};
let cmsg = cmsg.as_ref()?;
cfg_if::cfg_if! {
if #[cfg(target_os = "android")] {
if let Some(current) = self.current {
if eq(current, cmsg) {
return None;
}
}
}
}
self.current = Some(cmsg);
let ancillary_result = AncillaryData::try_from_cmsghdr(cmsg);
Some(ancillary_result)