fix: Add FreeBSD compatibility for TCP socket options

Replace Linux-only SOL_TCP with IPPROTO_TCP for FreeBSD
Add OS-specific TCP option constants (TCP_KEEPIDLE, TCP_KEEPINTVL, TCP_KEEPCNT)
Add missing imports: std::iter::repeat, libc::c_void
Wrap setsockopt / getsockopt calls for cross-platform compatibility

Author: yonas

bin/src/util.rs

@@ -118,9 +118,11 @@ pub fn get_config_file_path(args: &cli::Args) -> Result<&str, UtilError> {
 
 #[cfg(target_os = "freebsd")]
 pub unsafe fn get_executable_path() -> Result<String, UtilError> {
+    use libc::{CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, PATH_MAX};
+    use libc::{c_void, sysctl};
+
     let mut capacity = PATH_MAX as usize;
-    let mut path: Vec<u8> = Vec::with_capacity(capacity);
-    path.extend(repeat(0).take(capacity));
+    let mut path = vec![0; capacity];
 
     let mib: Vec<i32> = vec![CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1];
     let len = mib.len() * size_of::<i32>();

lib/src/socket.rs

@@ -534,7 +534,17 @@ pub mod stats {
     #[cfg(unix)]
     #[cfg(not(any(target_os = "macos", target_os = "ios")))]
     mod internal {
+        #[cfg(target_os = "linux")]
         pub const OPT_LEVEL: libc::c_int = libc::SOL_TCP;
+
+        #[cfg(any(
+            target_os = "freebsd",
+            target_os = "dragonfly",
+            target_os = "openbsd",
+            target_os = "netbsd"
+        ))]
+        pub const OPT_LEVEL: libc::c_int = libc::IPPROTO_TCP;
+
         pub const OPT_NAME: libc::c_int = libc::TCP_INFO;
 
         #[derive(Clone, Debug)]