Start adding support for FreeBSD

foreign_freebsd.odin

@@ -0,0 +1,8 @@
+package systeminfo
+
+import c "core:c/libc"
+
+@(default_calling_convention = "c")
+foreign {
+	gethostname :: proc(hostname: ^[1024]u8, namelen: c.int) -> c.int ---
+}

foreign_linux.odin

@@ -5,5 +5,4 @@ import c "core:c/libc"
 @(default_calling_convention = "c")
 foreign {
 	statvfs :: proc(path: cstring, stat: ^Sys_statvfs) -> c.int ---
-	sysconf :: proc(name: int) -> c.long ---
 }

systeminfo_freebsd.odin

@@ -0,0 +1,33 @@
+package systeminfo
+
+import "core:fmt"
+import c "core:c/libc"
+import "core:strings"
+import "core:sys/unix"
+
+get_hostname :: proc() -> (hostname: string, ok: bool) #optional_ok {
+	ok = true
+
+	hostname_array: [1024]u8
+	err := gethostname(&hostname_array, i32(1023))
+	if err != 0 {
+		ok = false
+		return
+	}
+
+	hostname = strings.clone(string(hostname_array[:]))
+
+	return
+}
+
+get_system_uptime_in_seconds :: proc() -> (int, bool) {
+	tp: unix.timespec
+
+	result := unix.clock_gettime(unix.CLOCK_MONOTONIC_RAW, &tp)
+	if result != 0 {
+		return 0, false
+	}
+
+	return int(tp.tv_sec), true
+}
+