Auto merge of #2631 - devnexen:fbsd13_upd_shm, r=Amanieu

shm api update from FreeBSD 13

Author: bors

libc-test/build.rs

@@ -2167,6 +2167,15 @@ fn test_freebsd(target: &str) {
 
             // Added in FreeBSD 14.
             "F_KINFO" => true, // FIXME: depends how frequent freebsd 14 is updated on CI, this addition went this week only.
+            "SHM_RENAME_NOREPLACE"
+            | "SHM_RENAME_EXCHANGE"
+            | "MFD_CLOEXEC"
+            | "MFD_ALLOW_SEALING"
+            | "MFD_HUGETLB"
+                if Some(13) > freebsd_ver =>
+            {
+                true
+            }
 
             _ => false,
         }
@@ -2248,6 +2257,9 @@ fn test_freebsd(target: &str) {
             // This is not available in FreeBSD 12.
             "SOCKCRED2SIZE" if Some(13) > freebsd_ver => true,
 
+            // Those are not available in FreeBSD 12.
+            "memfd_create" | "shm_rename" if Some(13) > freebsd_ver => true,
+
             _ => false,
         }
     });

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

@@ -3615,6 +3615,13 @@ pub const DST_CAN: ::c_int = 6;
 pub const CPUCLOCK_WHICH_PID: ::c_int = 0;
 pub const CPUCLOCK_WHICH_TID: ::c_int = 1;
 
+pub const MFD_CLOEXEC: ::c_uint = 0x00000001;
+pub const MFD_ALLOW_SEALING: ::c_uint = 0x00000002;
+pub const MFD_HUGETLB: ::c_uint = 0x00000004;
+
+pub const SHM_RENAME_NOREPLACE: ::c_int = 1 << 0;
+pub const SHM_RENAME_EXCHANGE: ::c_int = 1 << 1;
+
 const_fn! {
     {const} fn _ALIGN(p: usize) -> usize {
         (p + _ALIGNBYTES) & !_ALIGNBYTES
@@ -4155,6 +4162,13 @@ extern "C" {
 
     pub fn adjtime(arg1: *const ::timeval, arg2: *mut ::timeval) -> ::c_int;
     pub fn clock_getcpuclockid2(arg1: ::id_t, arg2: ::c_int, arg3: *mut clockid_t) -> ::c_int;
+
+    pub fn shm_rename(
+        path_from: *const ::c_char,
+        path_to: *const ::c_char,
+        flags: ::c_int,
+    ) -> ::c_int;
+    pub fn memfd_create(name: *const ::c_char, flags: ::c_uint) -> ::c_int;
 }
 
 #[link(name = "kvm")]