MSG_NOSIGNAL on linux

1 files changed, 7 insertions, 1 deletions

diff --git a/src/libstd/sys/unix/ext/net.rs b/src/libstd/sys/unix/ext/net.rs
index 3f93fce1935..f2e40714b46 100644
--- a/src/libstd/sys/unix/ext/net.rs
+++ b/src/libstd/sys/unix/ext/net.rs
@@ -28,6 +28,11 @@ use sys::cvt;
 use sys::net::Socket;
 use sys_common::{AsInner, FromInner, IntoInner};
 
+#[cfg(target_os = "linux")]
+const MSG_NOSIGNAL: libc::c_int = 0x4000;
+#[cfg(not(target_os = "linux"))]
+const MSG_NOSIGNAL: libc::c_int = 0x0; // unused dummy value
+
 fn sun_path_offset() -> usize {
     unsafe {
         // Work with an actual instance of the type since using a null pointer is UB
@@ -686,11 +691,12 @@ impl UnixDatagram {
         fn inner(d: &UnixDatagram, buf: &[u8], path: &Path) -> io::Result<usize> {
             unsafe {
                 let (addr, len) = sockaddr_un(path)?;
+                let flags = if cfg!(target_os = "linux") { MSG_NOSIGNAL } else { 0 };
 
                 let count = cvt(libc::sendto(*d.0.as_inner(),
                                              buf.as_ptr() as *const _,
                                              buf.len(),
-                                             0,
+                                             flags,
                                              &addr as *const _ as *const _,
                                              len))?;
                 Ok(count as usize)