Add writev() wrapper for Windows

1 files changed, 17 insertions, 0 deletions

diff --git a/win/inspircd_win32wrapper.h b/win/inspircd_win32wrapper.h
index a19bdf857..361724a2f 100644
--- a/win/inspircd_win32wrapper.h
+++ b/win/inspircd_win32wrapper.h
@@ -218,3 +218,20 @@ private:
 
 // Same value as EXIT_STATUS_FORK (EXIT_STATUS_FORK is unused on Windows)
 #define EXIT_STATUS_SERVICE 4
+
+// Windows WSABUF with POSIX field names
+struct WindowsIOVec
+{
+	// POSIX iovec has iov_base then iov_len, WSABUF in Windows has the fields in reverse order
+	u_long iov_len; // Number of bytes to transfer
+	char FAR* iov_base; // Starting address
+};
+
+inline ssize_t writev(int fd, const WindowsIOVec* iov, int count)
+{
+	DWORD sent;
+	int ret = WSASend(fd, reinterpret_cast<LPWSABUF>(const_cast<WindowsIOVec*>(iov)), count, &sent, 0, NULL, NULL);
+	if (ret == 0)
+		return sent;
+	return -1;
+}