From 0b940a756838efcb90363ad99cb085d077b78e96 Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Wed, 18 Apr 2018 07:54:39 +0200
Subject: Use socketcall on x86

---
 syscall_linux_386.go | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 syscall_linux_386.go

(limited to 'syscall_linux_386.go')

diff --git a/syscall_linux_386.go b/syscall_linux_386.go
new file mode 100644
index 0000000..76d7c7e
--- /dev/null
+++ b/syscall_linux_386.go
@@ -0,0 +1,53 @@
+// +build linux,386
+
+/* Copyright 2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ */
+
+package main
+
+import (
+	"golang.org/x/sys/unix"
+	"syscall"
+	"unsafe"
+)
+
+const (
+	_SENDMSG = 16
+	_RECVMSG = 17
+)
+
+func sendmsg(fd int, msghdr *unix.Msghdr, flags int) (uintptr, uintptr, syscall.Errno) {
+	args := struct {
+		fd     uintptr
+		msghdr uintptr
+		flags  uintptr
+	}{
+		uintptr(fd),
+		uintptr(unsafe.Pointer(msghdr)),
+		uintptr(flags),
+	}
+	return unix.Syscall(
+		unix.SYS_SOCKETCALL,
+		_SENDMSG,
+		uintptr(unsafe.Pointer(&args)),
+		0,
+	)
+}
+
+func recvmsg(fd int, msghdr *unix.Msghdr, flags int) (uintptr, uintptr, syscall.Errno) {
+	args := struct {
+		fd     uintptr
+		msghdr uintptr
+		flags  uintptr
+	}{
+		uintptr(fd),
+		uintptr(unsafe.Pointer(msghdr)),
+		uintptr(flags),
+	}
+	return unix.Syscall(
+		unix.SYS_SOCKETCALL,
+		_RECVMSG,
+		uintptr(unsafe.Pointer(&args)),
+		0,
+	)
+}
-- 
cgit v1.2.3-59-g8ed1b