Fix compiles on various BSDs

Also document them to prevent future regressions

src/lib.rs

@@ -54,9 +54,24 @@
 #![cfg_attr(all(windows, target_arch = "x86", target_env = "msvc"), doc(
     html_root_url = "https://doc.rust-lang.org/libc/i686-pc-windows-msvc"
 ))]
-#![cfg_attr(all(target_os = "android"), doc(
+#![cfg_attr(target_os = "android", doc(
     html_root_url = "https://doc.rust-lang.org/libc/arm-linux-androideabi"
 ))]
+#![cfg_attr(target_os = "freebsd", doc(
+    html_root_url = "https://doc.rust-lang.org/libc/x86_64-unknown-freebsd"
+))]
+#![cfg_attr(target_os = "openbsd", doc(
+    html_root_url = "https://doc.rust-lang.org/libc/x86_64-unknown-openbsd"
+))]
+#![cfg_attr(target_os = "bitrig", doc(
+    html_root_url = "https://doc.rust-lang.org/libc/x86_64-unknown-bitrig"
+))]
+#![cfg_attr(target_os = "netbsd", doc(
+    html_root_url = "https://doc.rust-lang.org/libc/x86_64-unknown-netbsd"
+))]
+#![cfg_attr(target_os = "dragonfly", doc(
+    html_root_url = "https://doc.rust-lang.org/libc/x86_64-unknown-dragonfly"
+))]
 
 // Attributes needed when building as part of the standard library
 #![cfg_attr(stdbuild, feature(no_std, core, core_slice_ext, staged_api, custom_attribute))]

src/unix/bsd/freebsdlike/mod.rs

@@ -14,6 +14,8 @@ pub type pthread_rwlock_t = *mut ::c_void;
 pub type pthread_key_t = ::c_int;
 pub type fsblkcnt_t = ::c_uint;
 pub type fsfilcnt_t = ::c_uint;
+pub type tcflag_t = ::c_uint;
+pub type speed_t = ::c_uint;
 
 pub enum timezone {}
 
@@ -120,6 +122,16 @@ s! {
         pub sin_addr: ::in_addr,
         pub sin_zero: [::c_char; 8],
     }
+
+    pub struct termios {
+        pub c_iflag: ::tcflag_t,
+        pub c_oflag: ::tcflag_t,
+        pub c_cflag: ::tcflag_t,
+        pub c_lflag: ::tcflag_t,
+        pub c_cc: [::cc_t; ::NCCS],
+        pub c_ispeed: ::speed_t,
+        pub c_ospeed: ::speed_t,
+    }
 }
 
 pub const EXIT_FAILURE: ::c_int = 1;
@@ -547,8 +559,8 @@ pub const HW_AVAILCPU: ::c_int = 25;
 
 extern {
     pub fn mincore(addr: *const ::c_void, len: ::size_t,
-                   vec: *mut c_char) -> ::c_int;
+                   vec: *mut ::c_char) -> ::c_int;
-    pub fn sysctlnametomib(name: *const c_char,
+    pub fn sysctlnametomib(name: *const ::c_char,
                            mibp: *mut ::c_int,
                            sizep: *mut ::size_t)
                            -> ::c_int;

src/unix/bsd/openbsdlike/mod.rs

@@ -6,6 +6,8 @@ pub type nlink_t = ::uint32_t;
 pub type ino_t = ::uint64_t;
 pub type pthread_key_t = ::c_int;
 pub type rlim_t = u64;
+pub type speed_t = ::c_uint;
+pub type tcflag_t = ::c_uint;
 
 pub enum timezone {}
 
@@ -36,6 +38,16 @@ s! {
         pub sin_addr: ::in_addr,
         pub sin_zero: [::int8_t; 8],
     }
+
+    pub struct termios {
+        pub c_iflag: ::tcflag_t,
+        pub c_oflag: ::tcflag_t,
+        pub c_cflag: ::tcflag_t,
+        pub c_lflag: ::tcflag_t,
+        pub c_cc: [::cc_t; ::NCCS],
+        pub c_ispeed: ::c_int,
+        pub c_ospeed: ::c_int,
+    }
 }
 
 pub const EXIT_FAILURE : ::c_int = 1;

src/unix/bsd/openbsdlike/netbsd.rs

@@ -4,8 +4,6 @@ pub type dev_t = u64;
 pub type blksize_t = ::int32_t;
 pub type fsblkcnt_t = ::uint64_t;
 pub type fsfilcnt_t = ::uint64_t;
-pub type speed_t = ::c_uint;
-pub type tcflag_t = ::c_uint;
 
 s! {
     pub struct dirent {
@@ -184,16 +182,6 @@ s! {
         pub dqb_btime: ::int32_t,
         pub dqb_itime: ::int32_t,
     }
-
-    pub struct termios {
-        pub c_iflag: ::tcflag_t,
-        pub c_oflag: ::tcflag_t,
-        pub c_cflag: ::tcflag_t,
-        pub c_lflag: ::tcflag_t,
-        pub c_cc: [::cc_t; ::NCCS],
-        pub c_ispeed: ::c_int,
-        pub c_ospeed: ::c_int,
-    }
 }
 
 pub const O_CLOEXEC: ::c_int = 0x400000;