FreeBSD: move newly introduced functions in all versions back to root

According to rust-lang#3023, new ABI did not need to be hidden away
under cfg(freebsdXX) flags, only changed ABI!

libc-test/build.rs

@@ -2325,6 +2325,14 @@ fn test_freebsd(target: &str) {
             // https://github.com/gnzlbg/ctest/issues/68
             "lio_listio" => true,
 
+            // Those introduced in FreeBSD 12.
+            "clock_nanosleep" | "getrandom" | "elf_aux_info" | "setproctitle_fast"
+            | "timingsafe_bcmp" | "timingsafe_memcmp"
+                if Some(12) > freebsd_ver =>
+            {
+                true
+            }
+
             // Those are introduced in FreeBSD 14.
             "sched_getaffinity" | "sched_setaffinity" | "sched_getcpu"
                 if Some(14) > freebsd_ver =>
@@ -2336,7 +2344,9 @@ fn test_freebsd(target: &str) {
             "SOCKCRED2SIZE" if Some(13) > freebsd_ver => true,
 
             // Those are not available in FreeBSD 12.
-            "memfd_create" | "shm_create_largepage" | "shm_rename" if Some(13) > freebsd_ver => {
+            "memfd_create" | "shm_create_largepage" | "shm_rename" | "getentropy" | "eventfd"
+                if Some(13) > freebsd_ver =>
+            {
                 true
             }
 

src/unix/bsd/freebsdlike/freebsd/freebsd11/mod.rs

@@ -462,8 +462,8 @@ extern "C" {
         msgflg: ::c_int,
     ) -> ::c_int;
 
-    pub fn fdatasync(fd: ::c_int) -> ::c_int;
-
+    // Type of `path` argument changed from `const void*` to `void*`
+    // in FreeBSD 12
     pub fn dirname(path: *const ::c_char) -> *mut ::c_char;
     pub fn basename(path: *const ::c_char) -> *mut ::c_char;
 }

src/unix/bsd/freebsdlike/freebsd/freebsd12/mod.rs

@@ -473,20 +473,6 @@ extern "C" {
         msgtyp: ::c_long,
         msgflg: ::c_int,
     ) -> ::ssize_t;
-    pub fn clock_nanosleep(
-        clk_id: ::clockid_t,
-        flags: ::c_int,
-        rqtp: *const ::timespec,
-        rmtp: *mut ::timespec,
-    ) -> ::c_int;
-
-    pub fn fdatasync(fd: ::c_int) -> ::c_int;
-
-    pub fn getrandom(buf: *mut ::c_void, buflen: ::size_t, flags: ::c_uint) -> ::ssize_t;
-    pub fn elf_aux_info(aux: ::c_int, buf: *mut ::c_void, buflen: ::c_int) -> ::c_int;
-    pub fn setproctitle_fast(fmt: *const ::c_char, ...);
-    pub fn timingsafe_bcmp(a: *const ::c_void, b: *const ::c_void, len: ::size_t) -> ::c_int;
-    pub fn timingsafe_memcmp(a: *const ::c_void, b: *const ::c_void, len: ::size_t) -> ::c_int;
 
     pub fn dirname(path: *mut ::c_char) -> *mut ::c_char;
     pub fn basename(path: *mut ::c_char) -> *mut ::c_char;

src/unix/bsd/freebsdlike/freebsd/freebsd13/mod.rs

@@ -492,23 +492,6 @@ extern "C" {
         msgtyp: ::c_long,
         msgflg: ::c_int,
     ) -> ::ssize_t;
-    pub fn clock_nanosleep(
-        clk_id: ::clockid_t,
-        flags: ::c_int,
-        rqtp: *const ::timespec,
-        rmtp: *mut ::timespec,
-    ) -> ::c_int;
-
-    pub fn eventfd(init: ::c_uint, flags: ::c_int) -> ::c_int;
-
-    pub fn fdatasync(fd: ::c_int) -> ::c_int;
-
-    pub fn getrandom(buf: *mut ::c_void, buflen: ::size_t, flags: ::c_uint) -> ::ssize_t;
-    pub fn getentropy(buf: *mut ::c_void, buflen: ::size_t) -> ::c_int;
-    pub fn elf_aux_info(aux: ::c_int, buf: *mut ::c_void, buflen: ::c_int) -> ::c_int;
-    pub fn setproctitle_fast(fmt: *const ::c_char, ...);
-    pub fn timingsafe_bcmp(a: *const ::c_void, b: *const ::c_void, len: ::size_t) -> ::c_int;
-    pub fn timingsafe_memcmp(a: *const ::c_void, b: *const ::c_void, len: ::size_t) -> ::c_int;
 
     pub fn cpuset_getdomain(
         level: ::cpulevel_t,

src/unix/bsd/freebsdlike/freebsd/freebsd14/mod.rs

@@ -492,23 +492,6 @@ extern "C" {
         msgtyp: ::c_long,
         msgflg: ::c_int,
     ) -> ::ssize_t;
-    pub fn clock_nanosleep(
-        clk_id: ::clockid_t,
-        flags: ::c_int,
-        rqtp: *const ::timespec,
-        rmtp: *mut ::timespec,
-    ) -> ::c_int;
-
-    pub fn eventfd(init: ::c_uint, flags: ::c_int) -> ::c_int;
-
-    pub fn fdatasync(fd: ::c_int) -> ::c_int;
-
-    pub fn getrandom(buf: *mut ::c_void, buflen: ::size_t, flags: ::c_uint) -> ::ssize_t;
-    pub fn getentropy(buf: *mut ::c_void, buflen: ::size_t) -> ::c_int;
-    pub fn elf_aux_info(aux: ::c_int, buf: *mut ::c_void, buflen: ::c_int) -> ::c_int;
-    pub fn setproctitle_fast(fmt: *const ::c_char, ...);
-    pub fn timingsafe_bcmp(a: *const ::c_void, b: *const ::c_void, len: ::size_t) -> ::c_int;
-    pub fn timingsafe_memcmp(a: *const ::c_void, b: *const ::c_void, len: ::size_t) -> ::c_int;
 
     pub fn cpuset_getdomain(
         level: ::cpulevel_t,

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

@@ -5102,6 +5102,12 @@ extern "C" {
     pub fn getpagesizes(pagesize: *mut ::size_t, nelem: ::c_int) -> ::c_int;
 
     pub fn clock_getcpuclockid2(arg1: ::id_t, arg2: ::c_int, arg3: *mut clockid_t) -> ::c_int;
+    pub fn clock_nanosleep(
+        clk_id: ::clockid_t,
+        flags: ::c_int,
+        rqtp: *const ::timespec,
+        rmtp: *mut ::timespec,
+    ) -> ::c_int;
 
     pub fn shm_create_largepage(
         path: *const ::c_char,
@@ -5118,6 +5124,17 @@ extern "C" {
     pub fn memfd_create(name: *const ::c_char, flags: ::c_uint) -> ::c_int;
     pub fn setaudit(auditinfo: *const auditinfo_t) -> ::c_int;
 
+    pub fn eventfd(init: ::c_uint, flags: ::c_int) -> ::c_int;
+
+    pub fn fdatasync(fd: ::c_int) -> ::c_int;
+
+    pub fn getrandom(buf: *mut ::c_void, buflen: ::size_t, flags: ::c_uint) -> ::ssize_t;
+    pub fn getentropy(buf: *mut ::c_void, buflen: ::size_t) -> ::c_int;
+    pub fn elf_aux_info(aux: ::c_int, buf: *mut ::c_void, buflen: ::c_int) -> ::c_int;
+    pub fn setproctitle_fast(fmt: *const ::c_char, ...);
+    pub fn timingsafe_bcmp(a: *const ::c_void, b: *const ::c_void, len: ::size_t) -> ::c_int;
+    pub fn timingsafe_memcmp(a: *const ::c_void, b: *const ::c_void, len: ::size_t) -> ::c_int;
+
     pub fn _umtx_op(
         obj: *mut ::c_void,
         op: ::c_int,