Implement new sys/unix package

core/crypto/rand_linux.odin

@@ -1,8 +1,8 @@
 package crypto
 
 import "core:fmt"
-import "core:os"
-import "core:sys/unix"
+
+import "core:sys/linux"
 
 _MAX_PER_CALL_BYTES :: 33554431 // 2^25 - 1
 
@@ -12,26 +12,25 @@ _rand_bytes :: proc (dst: []byte) {
 
 	for l > 0 {
 		to_read := min(l, _MAX_PER_CALL_BYTES)
-		ret := unix.sys_getrandom(raw_data(dst), uint(to_read), 0)
-		if ret < 0 {
-			switch os.Errno(-ret) {
-			case os.EINTR:
-				// Call interupted by a signal handler, just retry the
-				// request.
-				continue
-			case os.ENOSYS:
-				// The kernel is apparently prehistoric (< 3.17 circa 2014)
-				// and does not support getrandom.
-				panic("crypto: 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(fmt.tprintf("crypto: getrandom failed: %d", ret))
-			}
+		n_read, errno := linux.getrandom(dst[:to_read], {})
+		#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("crypto: 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(fmt.tprintf("crypto: getrandom failed: %v", errno))
 		}
-
-		l -= ret
-		dst = dst[ret:]
+		l -= n_read
+		dst = dst[n_read:]
 	}
 }