Auto merge of #2649 - devnexen:netbsd_ifconf, r=Amanieu

netbsd add ifconf data

Author: bors

libc-test/semver/netbsd.txt

@@ -1240,6 +1240,7 @@ if_freenameindex
 if_msghdr
 if_nameindex
 ifaddrs
+ifconf
 in6_pktinfo
 in_pktinfo
 initgroups

src/unix/bsd/netbsdlike/netbsd/mod.rs

@@ -575,6 +575,16 @@ s! {
         pub descr_len: u32,
         pub descr_str: [::c_char; 1],
     }
+
+    pub struct ifreq {
+        pub _priv: [[::c_char; 6]; 24],
+    }
+
+    pub struct ifconf {
+        pub ifc_len: ::c_int,
+        #[cfg(libc_union)]
+        pub ifc_ifcu: __c_anonymous_ifc_ifcu,
+    }
 }
 
 s_no_extra_traits! {
@@ -693,6 +703,12 @@ s_no_extra_traits! {
         pub open: __c_anonymous_posix_spawn_fae_open,
         pub dup2: __c_anonymous_posix_spawn_fae_dup2,
     }
+
+    #[cfg(libc_union)]
+    pub union __c_anonymous_ifc_ifcu {
+        pub ifcu_buf: *mut ::c_void,
+        pub ifcu_req: *mut ifreq,
+    }
 }
 
 cfg_if! {
@@ -1155,6 +1171,41 @@ cfg_if! {
                 }
             }
         }
+
+        #[cfg(libc_union)]
+        impl Eq for __c_anonymous_ifc_ifcu {}
+
+        #[cfg(libc_union)]
+        impl PartialEq for __c_anonymous_ifc_ifcu {
+            fn eq(&self, other: &__c_anonymous_ifc_ifcu) -> bool {
+                unsafe {
+                    self.ifcu_buf == other.ifcu_buf
+                        || self.ifcu_req == other.ifcu_req
+                }
+            }
+        }
+
+        #[cfg(libc_union)]
+        impl ::fmt::Debug for __c_anonymous_ifc_ifcu {
+            fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
+                unsafe {
+                    f.debug_struct("__c_anonymous_ifc_ifcu")
+                        .field("ifcu_buf", &self.ifcu_buf)
+                        .field("ifcu_req", &self.ifcu_req)
+                        .finish()
+                }
+            }
+        }
+
+        #[cfg(libc_union)]
+        impl ::hash::Hash for __c_anonymous_ifc_ifcu {
+            fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
+                unsafe {
+                    self.ifcu_buf.hash(state);
+                    self.ifcu_req.hash(state);
+                }
+            }
+        }
     }
 }