gsize socket_getInputBufferSpace(Socket* socket) {
MAGIC_ASSERT(socket);
utility_assert(socket->inputBufferSize >= socket->inputBufferLength);
gsize bufferSize = socket_getInputBufferSize(socket);
if(bufferSize < socket->inputBufferLength) {
return 0;
} else {
return bufferSize - socket->inputBufferLength;
}
}
gint system_getSockOpt(gint fd, gint level, gint optname, gpointer optval,
socklen_t* optlen) {
if(!optlen) {
errno = EFAULT;
return -1;
}
Host* node = _system_switchInShadowContext();
Descriptor* descriptor = host_lookupDescriptor(node, fd);
gint result = 0;
/* TODO: implement socket options */
if(descriptor) {
if(level == SOL_SOCKET || level == SOL_IP || level == SOL_TCP) {
DescriptorType t = descriptor_getType(descriptor);
switch (optname) {
case TCP_INFO: {
if(t == DT_TCPSOCKET) {
if(optval) {
TCP* tcp = (TCP*)descriptor;
tcp_getInfo(tcp, (struct tcp_info *)optval);
}
*optlen = sizeof(struct tcp_info);
result = 0;
} else {
warning("called getsockopt with TCP_INFO on non-TCP socket");
errno = ENOPROTOOPT;
result = -1;
}
break;
}
case SO_SNDBUF: {
if(*optlen < sizeof(gint)) {
warning("called getsockopt with SO_SNDBUF with optlen < %i", (gint)(sizeof(gint)));
errno = EINVAL;
result = -1;
} else if (t != DT_TCPSOCKET && t != DT_UDPSOCKET) {
warning("called getsockopt with SO_SNDBUF on non-socket");
errno = ENOPROTOOPT;
result = -1;
} else {
if(optval) {
*((gint*) optval) = (gint) socket_getOutputBufferSize((Socket*)descriptor);
}
*optlen = sizeof(gint);
}
break;
}
case SO_RCVBUF: {
if(*optlen < sizeof(gint)) {
warning("called getsockopt with SO_RCVBUF with optlen < %i", (gint)(sizeof(gint)));
errno = EINVAL;
result = -1;
} else if (t != DT_TCPSOCKET && t != DT_UDPSOCKET) {
warning("called getsockopt with SO_RCVBUF on non-socket");
errno = ENOPROTOOPT;
result = -1;
} else {
if(optval) {
*((gint*) optval) = (gint) socket_getInputBufferSize((Socket*)descriptor);
}
*optlen = sizeof(gint);
}
break;
}
case SO_ERROR: {
if(optval) {
*((gint*)optval) = 0;
}
*optlen = sizeof(gint);
result = 0;
break;
}
default: {
warning("getsockopt optname %i not implemented", optname);
errno = ENOSYS;
result = -1;
break;
}
}
} else {
warning("getsockopt level %i not implemented", level);
errno = ENOSYS;
result = -1;
}
} else {
errno = EBADF;
result = -1;
}
_system_switchOutShadowContext(node);
return result;
}
