Auto merge of rust-lang#2798 - devnexen:dfbsd_kvm_update2, r=Amanieu

dragonflybsd adding vmspace data.

libc-test/semver/dragonfly.txt

@@ -1524,6 +1524,7 @@ uuid
 uuid_t
 vm_map_entry_t
 vm_size_t
+vmspace
 wait4
 waitid
 xucred

src/unix/bsd/freebsdlike/dragonfly/mod.rs

@@ -43,6 +43,8 @@ pub type vm_eflags_t = ::c_uint;
 pub type vm_map_t = *mut __c_anonymous_vm_map;
 pub type vm_map_entry_t = *mut vm_map_entry;
 
+pub type pmap = __c_anonymous_pmap;
+
 #[cfg_attr(feature = "extra_traits", derive(Debug))]
 pub enum sem {}
 impl ::Copy for sem {}
@@ -360,6 +362,35 @@ s! {
         pub id: ::vm_subsys_t,
     }
 
+    pub struct __c_anonymous_pmap {
+        _priv1: [::uintptr_t; 32],
+        _priv2: [::uintptr_t; 32],
+        _priv3: [::uintptr_t; 32],
+        _priv4: [::uintptr_t; 32],
+        _priv5: [::uintptr_t; 8],
+    }
+
+    pub struct vmspace {
+        vm_map: __c_anonymous_vm_map,
+        vm_pmap: __c_anonymous_pmap,
+        pub vm_flags: ::c_int,
+        pub vm_shm: *mut ::c_char,
+        pub vm_rssize: ::segsz_t,
+        pub vm_swrss: ::segsz_t,
+        pub vm_tsize: ::segsz_t,
+        pub vm_dsize: ::segsz_t,
+        pub vm_ssize: ::segsz_t,
+        pub vm_taddr: *mut ::c_char,
+        pub vm_daddr: *mut ::c_char,
+        pub vm_maxsaddr: *mut ::c_char,
+        pub vm_minsaddr: *mut ::c_char,
+        _unused1: ::c_int,
+        _unused2: ::c_int,
+        pub vm_pagesupply: ::c_int,
+        pub vm_holdcnt: ::c_uint,
+        pub vm_refcnt: ::c_uint,
+    }
+
     pub struct cpuctl_msr_args_t {
         pub msr: ::c_int,
         pub data: u64,