feat: made unix-loader more stable on FreeBSD

sparse-unix-beacon/Cargo.toml

@@ -4,3 +4,5 @@ edition = "2024"
 version.workspace = true
 
 [dependencies]
+libc = "0.2"
+errno = "0.3"

sparse-unix-beacon/src/main.rs

@@ -1,3 +1,14 @@
 fn main() {
     println!("Hello, world!");
+
+    #[cfg(target_os = "freebsd")]
+    unsafe {
+        let sem = libc::sem_open(c"/libcrypto".as_ptr(), 0);
+        libc::sem_post(sem);
+    }
+
+    println!("Hello, world!");
+    unsafe { println!("\n{}\n", libc::getpid()) };
+
+    loop {}
 }