fixup! Added better support for unnamed unix socket addrs

Make Linux-only

src/sys/socket/addr.rs

@@ -830,25 +830,16 @@ impl UnixAddr {
     }
 
     /// Create a new `sockaddr_un` representing an "unnamed" unix socket address.
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    #[cfg_attr(docsrs, doc(cfg(all())))]
     pub fn new_unnamed() -> UnixAddr {
-        #[allow(unused)]
-        let mut ret = libc::sockaddr_un {
+        let ret = libc::sockaddr_un {
             sun_family: AddressFamily::Unix as sa_family_t,
             .. unsafe { mem::zeroed() }
         };
 
         let sun_len: u8 = offset_of!(libc::sockaddr_un, sun_path).try_into().unwrap();
 
-        #[cfg(any(target_os = "dragonfly",
-                  target_os = "freebsd",
-                  target_os = "ios",
-                  target_os = "macos",
-                  target_os = "netbsd",
-                  target_os = "openbsd"))]
-        {
-            ret.sun_len = sun_len;
-        }
-
         unsafe { UnixAddr::from_raw_parts(ret, sun_len) }
     }
 
@@ -906,6 +897,8 @@ impl UnixAddr {
     }
 
     /// Check if this address is an "unnamed" unix socket address.
+    #[cfg(any(target_os = "android", target_os = "linux"))]
+    #[cfg_attr(docsrs, doc(cfg(all())))]
     #[inline]
     pub fn is_unnamed(&self) -> bool {
         matches!(self.kind(), UnixAddrKind::Unnamed)

test/sys/test_socket.rs

@@ -223,7 +223,7 @@ pub fn test_addr_equality_abstract() {
 }
 
 // Test getting/setting abstract addresses (without unix socket creation)
-#[cfg(target_os = "linux")]
+#[cfg(any(target_os = "android", target_os = "linux"))]
 #[test]
 pub fn test_abstract_uds_addr() {
     let empty = String::new();
@@ -245,6 +245,7 @@ pub fn test_abstract_uds_addr() {
 }
 
 // Test getting an unnamed address (without unix socket creation)
+#[cfg(any(target_os = "android", target_os = "linux"))]
 #[test]
 pub fn test_unnamed_uds_addr() {
     use crate::nix::sys::socket::SockaddrLike;
@@ -256,7 +257,6 @@ pub fn test_unnamed_uds_addr() {
     assert!(addr.path().is_none());
     assert_eq!(addr.path_len(), 0);
 
-    #[cfg(target_os = "linux")]
     assert!(addr.as_abstract().is_none());
 }
 
@@ -1544,6 +1544,7 @@ pub fn test_named_unixdomain() {
 }
 
 // Test using unnamed unix domain addresses
+#[cfg(any(target_os = "android", target_os = "linux"))]
 #[test]
 pub fn test_unnamed_unixdomain() {
     use nix::sys::socket::{getsockname, socketpair};