//send peer credentials null byte
//different platforms do this in different ways
#if HAVE_CMSGCRED
unsafe void WriteBsdCred ()
{
//null credentials byte
byte buf = 0;
IOVector iov = new IOVector ();
//iov.Base = (IntPtr)(&buf);
iov.Base = &buf;
iov.Length = 1;
msghdr msg = new msghdr ();
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
cmsg cm = new cmsg ();
msg.msg_control = (IntPtr)(&cm);
msg.msg_controllen = (uint)sizeof (cmsg);
cm.hdr.cmsg_len = (uint)sizeof (cmsg);
cm.hdr.cmsg_level = 0xffff; //SOL_SOCKET
cm.hdr.cmsg_type = 0x03; //SCM_CREDS
int written = socket.SendMsg (&msg, 0);
if (written != 1)
throw new Exception ("Failed to write credentials");
}
static unsafe extern SSizeT writev(int fd, IOVector* iov, int iovcnt);
static unsafe extern SSizeT readv(int fd, IOVector* iov, int iovcnt);
public int WriteV(IOVector* iov, int count)
{
//FIXME: Handle EINTR here or elsewhere
//FIXME: handle r != count
//TODO: check offset correctness
int r = (int)writev (Handle, iov, count);
if (r < 0)
throw UnixError.GetLastUnixException ();
return r;
}
public int Write(IOVector[] iov)
{
return Write (iov, 0, iov.Length);
}
public int Write(IOVector[] iov, int offset, int count)
{
//FIXME: Handle EINTR here or elsewhere
//FIXME: handle r != count
//TODO: check offset correctness
fixed (IOVector* bufP = &iov[offset]) {
int r = (int)writev (Handle, bufP + offset, count);
if (r < 0)
throw UnixError.GetLastUnixException ();
return r;
}
}