Implement new sys/unix package

core/math/rand/system_linux.odin

@@ -1,27 +1,28 @@
 package rand
 
-import "core:sys/unix"
+import "core:sys/linux"
 
 @(require_results)
 _system_random :: proc() -> u64 {
 	for {
 		value: u64
-		ret := unix.sys_getrandom(([^]u8)(&value), size_of(value), 0)
-		if ret < 0 {
-			switch ret {
-			case -4: // EINTR
-				// Call interupted by a signal handler, just retry the request.
-				continue
-			case -38: // ENOSYS
-				// The kernel is apparently prehistoric (< 3.17 circa 2014)
-				// and does not support getrandom.
-				panic("getrandom not available in kernel")
-			case:
-				// All other failures are things that should NEVER happen
-				// unless the kernel interface changes (ie: the Linux
-				// developers break userland).
-				panic("getrandom failed")
-			}
+		value_buf := (cast([^]u8)&value)[:size_of(u64)]
+		_, errno := linux.getrandom(value_buf, {})
+		#partial switch errno {
+		case .NONE:
+			// Do nothing
+		case .EINTR: 
+			// Call interupted by a signal handler, just retry the request.
+			continue
+		case .ENOSYS: 
+			// The kernel is apparently prehistoric (< 3.17 circa 2014)
+			// and does not support getrandom.
+			panic("getrandom not available in kernel")
+		case:
+			// All other failures are things that should NEVER happen
+			// unless the kernel interface changes (ie: the Linux
+			// developers break userland).
+			panic("getrandom failed")
 		}
 		return value
 	}