first commit

internal/client/socket_linux.go

@@ -0,0 +1,28 @@
+//go:build linux
+
+package client
+
+import (
+	"fmt"
+	"os"
+
+	"golang.org/x/sys/unix"
+)
+
+// createSocketPair creates a Unix domain socket pair
+func createSocketPair() ([2]int, error) {
+	fds, err := unix.Socketpair(unix.AF_UNIX, unix.SOCK_STREAM, 0)
+	if err != nil {
+		return [2]int{}, fmt.Errorf("socketpair: %w", err)
+	}
+	return fds, nil
+}
+
+func closeFDs(fds [2]int) {
+	unix.Close(fds[0])
+	unix.Close(fds[1])
+}
+
+func fdToFile(fd int, name string) *os.File {
+	return os.NewFile(uintptr(fd), name)
+}