Source to src/bsdsocket-posix-new.c


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/*
  * UAE - The Un*x Amiga Emulator
  *
  * bsdsocket.library emulation - Unix
  *
  * Copyright 2000-2001 Carl Drougge <carl.drougge@home.se> <bearded@longhaired.org>
  * Copyright 2003-2005 Richard Drummond
  * Copyright 2004      Jeff Shepherd
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  *
  */

#include "sysconfig.h"
#include "sysdeps.h"

#include "options.h"
#include "memory.h"
#include "custom.h"
#include "newcpu.h"
#include "autoconf.h"
#include "traps.h"
#include "threaddep/thread.h"
#include "native2amiga.h"
#include "bsdsocket.h"

#ifdef BSDSOCKET
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/select.h>
#include <sys/ioctl.h>
#ifdef HAVE_SYS_FILIO_H
# include <sys/filio.h>
#endif
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <stddef.h>
#include <netdb.h>

#include <signal.h>
#include <arpa/inet.h>

//#define DEBUG_BSDSOCKET
#ifdef DEBUG_BSDSOCKET
#define DEBUG_LOG write_log
#else
#define DEBUG_LOG(...) do ; while(0)
#endif

#define WAITSIGNAL	waitsig (context, sb)

/* Sigqueue is unsafe on SMP machines.
 * Temporary work-around.
 */
//#define SETSIGNAL	addtosigqueue (sb, 0)
#define SETSIGNAL \
    do { \
	uae_Signal (sb->ownertask, sb->sigstosend | ((uae_u32) 1) << sb->signal); \
	sb->dosignal = 1; \
    } while (0)


#define SETERRNO	bsdsocklib_seterrno (sb,mapErrno (errno))
#define SETHERRNO	bsdsocklib_setherrno (sb, h_errno)


/* BSD-systems don't seem to have MSG_NOSIGNAL..
   @@@ We need to catch SIGPIPE on those systems! (?) */
#ifndef MSG_NOSIGNAL
#define MSG_NOSIGNAL 0
#endif

#define S_GL_result(res) sb->resultval = (res)

uae_u32 bsdthr_Accept_2 (SB);
uae_u32 bsdthr_Recv_2 (SB);
uae_u32 bsdthr_blockingstuff (uae_u32 (*tryfunc)(SB), SB);
uae_u32 bsdthr_SendRecvAcceptConnect (uae_u32 (*tryfunc)(SB), SB);
uae_u32 bsdthr_Send_2 (SB);
uae_u32 bsdthr_Connect_2 (SB);
uae_u32 bsdthr_WaitSelect (SB);
uae_u32 bsdthr_Wait (SB);
void clearsockabort (SB);

static uae_sem_t sem_queue;

/**
 ** Helper functions
 **/

/*
 * Map host errno to amiga errno
 */
static int mapErrno (int e)
{
    switch (e) {
	case EINTR:		e = 4;  break;
	case EDEADLK:		e = 11; break;
	case EAGAIN:		e = 35; break;
	case EINPROGRESS:	e = 36; break;
	case EALREADY:		e = 37; break;
	case ENOTSOCK:		e = 38; break;
	case EDESTADDRREQ:	e = 39; break;
	case EMSGSIZE:		e = 40; break;
	case EPROTOTYPE:	e = 41; break;
	case ENOPROTOOPT:	e = 42; break;
	case EPROTONOSUPPORT:	e = 43; break;
	case ESOCKTNOSUPPORT:	e = 44; break;
	case EOPNOTSUPP:	e = 45;	break;
	case EPFNOSUPPORT:	e = 46; break;
	case EAFNOSUPPORT:	e = 47; break;
	case EADDRINUSE:	e = 48; break;
	case EADDRNOTAVAIL:	e = 49; break;
	case ENETDOWN:		e = 50; break;
	case ENETUNREACH:	e = 51; break;
	case ENETRESET:		e = 52; break;
	case ECONNABORTED:	e = 53; break;
	case ECONNRESET:	e = 54; break;
	case ENOBUFS:		e = 55; break;
	case EISCONN:		e = 56; break;
	case ENOTCONN:		e = 57; break;
	case ESHUTDOWN:		e = 58; break;
	case ETOOMANYREFS:	e = 59; break;
	case ETIMEDOUT:		e = 60; break;
	case ECONNREFUSED:	e = 61; break;
	case ELOOP:		e = 62; break;
	case ENAMETOOLONG:	e = 63; break;
	default: break;
    }
    return e;
}

/*
 * Map amiga (s|g)etsockopt level into native one
 */
static int mapsockoptlevel (int level)
{
    switch (level) {
	case 0xffff:
	    return SOL_SOCKET;
	case 0:
	    return IPPROTO_IP;
	case 1:
	    return IPPROTO_ICMP;
	case 2:
	    return IPPROTO_IGMP;
#ifdef IPPROTO_IPIP
	case 4:
	    return IPPROTO_IPIP;
#endif
	case 6:
	    return IPPROTO_TCP;
	case 8:
	    return IPPROTO_EGP;
	case 12:
	    return IPPROTO_PUP;
	case 17:
	    return IPPROTO_UDP;
	case 22:
	    return IPPROTO_IDP;
#ifdef IPPROTO_TP
	case 29:
	    return IPPROTO_TP;
#endif
	case 98:
	    return IPPROTO_ENCAP;
	default:
	    DEBUG_LOG ("Unknown sockopt level %d\n", level);
	    return level;
    }
}

/*
 * Map amiga (s|g)etsockopt optname into native one
 */
static int mapsockoptname (int level, int optname)
{
    switch (level) {

	case SOL_SOCKET:
	    switch (optname) {
		case 0x0001:
		    return SO_DEBUG;
		case 0x0002:
		    return SO_ACCEPTCONN;
		case 0x0004:
		    return SO_REUSEADDR;
		case 0x0008:
		    return SO_KEEPALIVE;
		case 0x0010:
		    return SO_DONTROUTE;
		case 0x0020:
		    return SO_BROADCAST;
#ifdef SO_USELOOPBACK
		case 0x0040:
		    return SO_USELOOPBACK;
#endif
		case 0x0080:
		    return SO_LINGER;
		case  0x0100:
		    return SO_OOBINLINE;
#ifdef SO_REUSEPORT
		case 0x0200:
		    return SO_REUSEPORT;
#endif
		case 0x1001:
		    return SO_SNDBUF;
		case 0x1002:
		    return SO_RCVBUF;
		case 0x1003:
		    return SO_SNDLOWAT;
		case 0x1004:
		    return SO_RCVLOWAT;
		case 0x1005:
		    return SO_SNDTIMEO;
		case 0x1006:
		    return SO_RCVTIMEO;
		case 0x1007:
		    return SO_ERROR;
		case 0x1008:
		    return SO_TYPE;

		default:
		    DEBUG_LOG ("Invalid setsockopt option %x for level %d\n",
			       optname, level);
		    return -1;
	    }
	    break;

	case IPPROTO_IP:
	    switch (optname) {
		case 1:
		    return IP_OPTIONS;
		case 2:
		    return IP_HDRINCL;
		case 3:
		    return IP_TOS;
		case 4:
		    return IP_TTL;
		case 5:
		    return IP_RECVOPTS;
		case 6:
		    return IP_RECVRETOPTS;
		case 8:
		    return IP_RETOPTS;
		case 9:
		    return IP_MULTICAST_IF;
		case 10:
		    return IP_MULTICAST_TTL;
		case 11:
		    return IP_MULTICAST_LOOP;
		case 12:
		    return IP_ADD_MEMBERSHIP;

		default:
		    DEBUG_LOG ("Invalid setsockopt option %x for level %d\n",
			       optname, level);
		    return -1;
	    }
	    break;

	case IPPROTO_TCP:
	    switch (optname) {
		case 1:
		    return TCP_NODELAY;
		case 2:
		    return TCP_MAXSEG;

		default:
		    DEBUG_LOG ("Invalid setsockopt option %x for level %d\n",
			       optname, level);
		    return -1;
	    }
	    break;

	default:
	    DEBUG_LOG ("Unknown level %d\n", level);
	    return -1;
    }
}


/*
 * Map amiga (s|g)etsockopt return value into the correct form
 */
static void mapsockoptreturn(int level, int optname, uae_u32 optval, void *buf)
{
    switch (level) {

	case SOL_SOCKET:
	    switch (optname) {
		case SO_DEBUG:
		case SO_ACCEPTCONN:
		case SO_REUSEADDR:
		case SO_KEEPALIVE:
		case SO_DONTROUTE:
		case SO_BROADCAST:
#ifdef SO_USELOOPBACK
		case SO_USELOOPBACK:
#endif
		case SO_LINGER:
		case SO_OOBINLINE:
#ifdef SO_REUSEPORT
		case SO_REUSEPORT:
#endif
		case SO_SNDBUF:
		case SO_RCVBUF:
		case SO_SNDLOWAT:
		case SO_RCVLOWAT:
		case SO_SNDTIMEO:
		case SO_RCVTIMEO:
		case SO_TYPE:
		    put_long (optval, *(int *)buf);
		    break;

		case SO_ERROR:
		    DEBUG_LOG("New errno is %d\n", mapErrno(*(int *)buf));
		    put_long (optval, mapErrno(*(int *)buf));
		    break;
		default:
		    break;
	    }
	    break;

	case IPPROTO_IP:
	    switch (optname) {
		case IP_OPTIONS:
		case IP_HDRINCL:
		case IP_TOS:
		case IP_TTL:
		case IP_RECVOPTS:
		//case IP_RECVRETOPTS:
		//case IP_RETOPTS:
		case IP_MULTICAST_IF:
		case IP_MULTICAST_TTL:
		case IP_MULTICAST_LOOP:
		case IP_ADD_MEMBERSHIP:
		    put_long (optval, *(int *)buf);
		    break;

		default:
		    break;
	    }
	    break;

	case IPPROTO_TCP:
	    switch (optname) {
		case TCP_NODELAY:
		case TCP_MAXSEG:
		    put_long (optval,*(int *)buf);
		    break;

		default:
		    break;
	    }
	    break;

	default:
	    break;
    }
}

/*
 * Map amiga (s|g)etsockopt value from amiga to the appropriate value
 */
static void mapsockoptvalue(int level, int optname, uae_u32 optval, void *buf)
{
    switch (level) {

	case SOL_SOCKET:
	    switch (optname) {
		case SO_DEBUG:
		case SO_ACCEPTCONN:
		case SO_REUSEADDR:
		case SO_KEEPALIVE:
		case SO_DONTROUTE:
		case SO_BROADCAST:
#ifdef SO_USELOOPBACK
		case SO_USELOOPBACK:
#endif
		case SO_LINGER:
		case SO_OOBINLINE:
#ifdef SO_REUSEPORT
		case SO_REUSEPORT:
#endif
		case SO_SNDBUF:
		case SO_RCVBUF:
		case SO_SNDLOWAT:
		case SO_RCVLOWAT:
		case SO_SNDTIMEO:
		case SO_RCVTIMEO:
		case SO_TYPE:
		case SO_ERROR:
		    *((int *)buf) = get_long (optval);
		    break;
		default:
		    break;
	    }
	    break;

	case IPPROTO_IP:
	    switch (optname) {
		case IP_OPTIONS:
		case IP_HDRINCL:
		case IP_TOS:
		case IP_TTL:
		case IP_RECVOPTS:
		//case IP_RECVRETOPTS:
		//case IP_RETOPTS:
		case IP_MULTICAST_IF:
		case IP_MULTICAST_TTL:
		case IP_MULTICAST_LOOP:
		case IP_ADD_MEMBERSHIP:
		    *((int *)buf) = get_long (optval);
		    break;

		default:
		    break;
	    }
	    break;

	case IPPROTO_TCP:
	    switch (optname) {
		case TCP_NODELAY:
		case TCP_MAXSEG:
		    *((int *)buf) = get_long (optval);
		    break;

		default:
		    break;
	    }
	    break;

	default:
	    break;
    }
}


STATIC_INLINE void fd_zero (uae_u32 fdset, uae_u32 nfds)
{
    unsigned int i;

    for (i = 0; i < nfds; i += 32, fdset += 4)
	put_long (fdset, 0);
}

STATIC_INLINE int bsd_amigaside_FD_ISSET (int n, uae_u32 set)
{
    uae_u32 foo = get_long (set + (n / 32));
    if (foo & (1 << (n % 32)))
	return 1;
    return 0;
}

STATIC_INLINE void bsd_amigaside_FD_ZERO (uae_u32 set)
{
    put_long (set, 0);
    put_long (set + 4, 0);
}

STATIC_INLINE void bsd_amigaside_FD_SET (int n, uae_u32 set)
{
    set = set + (n / 32);
    put_long (set, get_long (set) | (1 << (n % 32)));
}

#ifdef DEBUG_BSDSOCKET
static void printSockAddr (struct sockaddr_in *in)
{
    DEBUG_LOG ("Family %d, ", in->sin_family);
    DEBUG_LOG ("Port %d,",    ntohs (in->sin_port));
    DEBUG_LOG ("Address %s,", inet_ntoa (in->sin_addr));
}
#else
#define printSockAddr(sockAddr)
#endif

/*
 * Copy a sockaddr object from amiga space to native space
 */
static int copysockaddr_a2n (struct sockaddr_in *addr, uae_u32 a_addr, unsigned int len)
{
    if ((len > sizeof (struct sockaddr_in)) || (len < 8))
	return 1;

    if (a_addr == 0)
	return 0;

    addr->sin_family      = get_byte (a_addr + 1);
    addr->sin_port        = htons (get_word (a_addr + 2));
    addr->sin_addr.s_addr = htonl (get_long (a_addr + 4));

    if (len > 8)
	memcpy (&addr->sin_zero, get_real_address (a_addr + 8), len - 8);   /* Pointless? */

    return 0;
}

/*
 * Copy a sockaddr object from native space to amiga space
 */
static int copysockaddr_n2a (uae_u32 a_addr, const struct sockaddr_in *addr, unsigned int len)
{
    if (len < 8)
	return 1;

    if (a_addr == 0)
	return 0;

    put_byte (a_addr, 0);                       /* Anyone use this field? */
    put_byte (a_addr + 1, addr->sin_family);
    put_word (a_addr + 2, ntohs (addr->sin_port));
    put_long (a_addr + 4, ntohl (addr->sin_addr.s_addr));

    if (len > 8)
	memset (get_real_address (a_addr + 8), 0, len - 8);

    return 0;
}

/*
 * Copy a hostent object from native space to amiga space
 */
static void copyHostent (const struct hostent *hostent, SB)
{
    int size = 28;
    int i;
    int numaddr = 0;
    int numaliases = 0;
    uae_u32 aptr;

    if (hostent->h_name != NULL)
	size += strlen(hostent->h_name)+1;

    if (hostent->h_aliases != NULL)
	while (hostent->h_aliases[numaliases])
	    size += strlen(hostent->h_aliases[numaliases++]) + 5;

    if (hostent->h_addr_list != NULL) {
	while (hostent->h_addr_list[numaddr])
	    numaddr++;
	size += numaddr*(hostent->h_length+4);
    }

    aptr = sb->hostent + 28 + numaliases * 4 + numaddr * 4;

    // transfer hostent to Amiga memory
    put_long (sb->hostent + 4, sb->hostent + 20);
    put_long (sb->hostent + 8, hostent->h_addrtype);
    put_long (sb->hostent + 12, hostent->h_length);
    put_long (sb->hostent + 16, sb->hostent + 24 + numaliases*4);

    for (i = 0; i < numaliases; i++)
	put_long (sb->hostent + 20 + i * 4, addstr (&aptr, hostent->h_aliases[i]));
    put_long (sb->hostent + 20 + numaliases * 4, 0);

    for (i = 0; i < numaddr; i++) {
	put_long (sb->hostent + 24 + (numaliases + i) * 4,
	    addmem (&aptr, hostent->h_addr_list[i], hostent->h_length));
    }
    put_long (sb->hostent + 24 + numaliases * 4 + numaddr * 4, 0);
    put_long (sb->hostent, aptr);
    addstr (&aptr, hostent->h_name);

    TRACE (("OK (%s)\n",hostent->h_name));
    bsdsocklib_seterrno (sb,0);
}

/*
 * Copy a protoent object from native space to Amiga space
 */
static void copyProtoent (TrapContext *context, SB, const struct protoent *p)
{
    size_t size = 16;
    int numaliases = 0;
    int i;
    uae_u32 aptr;

    // compute total size of protoent
    if (p->p_name != NULL)
	size += strlen (p->p_name) + 1;

    if (p->p_aliases != NULL)
	while (p->p_aliases[numaliases])
	    size += strlen (p->p_aliases[numaliases++]) + 5;

    if (sb->protoent) {
	uae_FreeMem (context, sb->protoent, sb->protoentsize);
    }

    sb->protoent = uae_AllocMem (context, size, 0);

    if (!sb->protoent) {
	write_log ("BSDSOCK: WARNING - copyProtoent() ran out of Amiga memory (couldn't allocate %d bytes)\n", size);
	bsdsocklib_seterrno (sb, 12); // ENOMEM
	return;
    }

    sb->protoentsize = size;

    aptr = sb->protoent + 16 + numaliases * 4;

    // transfer protoent to Amiga memory
    put_long (sb->protoent + 4, sb->protoent + 12);
    put_long (sb->protoent + 8, p->p_proto);

    for (i = 0; i < numaliases; i++)
	put_long (sb->protoent + 12 + i * 4, addstr (&aptr, p->p_aliases[i]));
    put_long (sb->protoent + 12 + numaliases * 4, 0);
    put_long (sb->protoent, aptr);
    addstr (&aptr, p->p_name);
    bsdsocklib_seterrno(sb, 0);
}



uae_u32 bsdthr_WaitSelect (SB)
{
    fd_set sets [3];
    int i, s, set, a_s, max;
    uae_u32 a_set;
    struct timeval tv;
    int r;

    DEBUG_LOG ("WaitSelect: %d 0x%x 0x%x 0x%x 0x%x 0x%x\n",
	       sb->nfds, sb->sets [0], sb->sets [1], sb->sets [2], sb->timeout, sb->sigmp);

    if (sb->timeout)
	DEBUG_LOG ("WaitSelect: timeout %d %d\n", get_long (sb->timeout),
		   get_long (sb->timeout + 4));

    FD_ZERO (&sets [0]);
    FD_ZERO (&sets [1]);
    FD_ZERO (&sets [2]);

    /* Set up the abort socket */
    FD_SET (sb->sockabort[0], &sets[0]);
    FD_SET (sb->sockabort[0], &sets[2]);
    max = sb->sockabort[0];

    for (set = 0; set < 3; set++) {
	if (sb->sets [set] != 0) {
	    a_set = sb->sets [set];
	    for (i = 0; i < sb->nfds; i++) {
		if (bsd_amigaside_FD_ISSET (i, a_set)) {
		    s = getsock (sb, i + 1);
		    DEBUG_LOG ("WaitSelect: AmigaSide %d set. NativeSide %d.\n", i, s);
		    if (s == -1) {
			write_log ("BSDSOCK: WaitSelect() called with invalid descriptor %d in set %d.\n", i, set);
		    } else {
			FD_SET (s, &sets [set]);
			if (max < s) max = s;
		    }
		}
	    }
	}
    }

    max++;

    if (sb->timeout) {
	tv.tv_sec  = get_long (sb->timeout);
	tv.tv_usec = get_long (sb->timeout + 4);
    }

    DEBUG_LOG("Select going to select\n");
    r = select (max, &sets [0], &sets [1], &sets [2], (sb->timeout == 0) ? NULL : &tv);
    DEBUG_LOG("Select returns %d, errno is %d\n", r, errno);
    if( r > 0 ) {
	/* Socket told us to abort */
	if (FD_ISSET (sb->sockabort[0], &sets[0])) {
	    /* read from the pipe to reset it */
	    DEBUG_LOG ("WaitSelect aborted from signal\n");
	    r = 0;
	    for (set = 0; set < 3; set++)
	    if (sb->sets [set] != 0)
		bsd_amigaside_FD_ZERO (sb->sets [set]);
	    clearsockabort (sb);
	}
	else
	/* This is perhaps slightly inefficient, but I don't care.. */
	for (set = 0; set < 3; set++) {
	    a_set = sb->sets [set];
	    if (a_set != 0) {
		bsd_amigaside_FD_ZERO (a_set);
		for (i = 0; i < sb->nfds; i++) {
		    a_s = getsock (sb, i + 1);
		    if (a_s != -1) {
			if (FD_ISSET (a_s, &sets [set])) {
			    DEBUG_LOG ("WaitSelect: NativeSide %d set. AmigaSide %d.\n", a_s, i);

			    bsd_amigaside_FD_SET (i, a_set);
		    }
		}
	    }
	}
	}
    } else if (r == 0) {         /* Timeout. I think we're supposed to clear the sets.. */
	for (set = 0; set < 3; set++)
	    if (sb->sets [set] != 0)
		bsd_amigaside_FD_ZERO (sb->sets [set]);
    }
    DEBUG_LOG ("WaitSelect: %d(%d)\n", r, errno);
    return r;
}

uae_u32 bsdthr_Accept_2 (SB)
{
    int foo, s, s2;
    long flags;
    struct sockaddr_in addr;
    socklen_t hlen = sizeof (struct sockaddr_in);

    if ((s = accept (sb->s, (struct sockaddr *)&addr, &hlen)) >= 0) {
	if ((flags = fcntl (s, F_GETFL)) == -1)
	    flags = 0;
	fcntl (s, F_SETFL, flags & ~O_NONBLOCK); /* @@@ Don't do this if it's supposed to stay nonblocking... */
	s2 = getsd (sb, s);
	sb->ftable[s2-1] = sb->ftable[sb->len];	/* new socket inherits the old socket's properties */
	DEBUG_LOG ("Accept: AmigaSide %d, NativeSide %d, len %d(%d)",
		   sb->resultval, s, &hlen, get_long (sb->a_addrlen));
	printSockAddr (&addr);
	foo = get_long (sb->a_addrlen);
	if (foo > 16)
	    put_long (sb->a_addrlen, 16);
	copysockaddr_n2a (sb->a_addr, &addr, foo);
	return s2 - 1;
    } else {
	return -1;
    }
}

uae_u32 bsdthr_Recv_2 (SB)
{
    int foo;
    int l, i;
    if (sb->from == 0) {
	foo = recv (sb->s, sb->buf, sb->len, sb->flags /*| MSG_NOSIGNAL*/);
	DEBUG_LOG ("recv2, recv returns %d, errno is %d\n", foo, errno);
    } else {
	struct sockaddr_in addr;
	socklen_t l = sizeof (struct sockaddr_in);
	i = get_long (sb->fromlen);
	copysockaddr_a2n (&addr, sb->from, i);
	foo = recvfrom (sb->s, sb->buf, sb->len, sb->flags | MSG_NOSIGNAL, (struct sockaddr *)&addr, &l);
	DEBUG_LOG ("recv2, recvfrom returns %d, errno is %d\n", foo, errno);
	if (foo >= 0) {
	    copysockaddr_n2a (sb->from, &addr, l);
	    put_long (sb->fromlen, l);
	}
    }
    return foo;
}

uae_u32 bsdthr_Send_2 (SB)
{
    if (sb->to == 0) {
	return send (sb->s, sb->buf, sb->len, sb->flags | MSG_NOSIGNAL);
    } else {
	struct sockaddr_in addr;
	int l = sizeof (struct sockaddr_in);
	copysockaddr_a2n (&addr, sb->to, sb->tolen);
	return sendto (sb->s, sb->buf, sb->len, sb->flags | MSG_NOSIGNAL,
		       (struct sockaddr *)&addr, l);
    }
}

uae_u32 bsdthr_Connect_2 (SB)
{
    if (sb->action == 1) {
	struct sockaddr_in addr;
	int len = sizeof (struct sockaddr_in);
	int retval;
	copysockaddr_a2n (&addr, sb->a_addr, sb->a_addrlen);
	retval = connect (sb->s, (struct sockaddr *)&addr, len);
	DEBUG_LOG ("Connect returns %d, errno is %d\n", retval, errno);
	/* Hack: I need to set the action to something other than
	 * 1 but I know action == 2 does the correct thing
	 */
	sb->action = 2;
	if (retval == 0) {
	     errno = 0;
	}
	return retval;
    } else {
	int foo;
	socklen_t bar;
	bar = sizeof (foo);
	if (getsockopt (sb->s, SOL_SOCKET, SO_ERROR, &foo, &bar) == 0) {
	    errno = foo;
	    DEBUG_LOG("Connect status is %d\n", foo);
	    return (foo == 0) ? 0 : -1;
	}
	return -1;
    }
}

uae_u32 bsdthr_SendRecvAcceptConnect (uae_u32 (*tryfunc)(SB), SB)
{
    return bsdthr_blockingstuff (tryfunc, sb);
}

uae_u32 bsdthr_blockingstuff (uae_u32 (*tryfunc)(SB), SB)
{
    int done = 0, foo;
    long flags;
    int nonblock;
    if ((flags = fcntl (sb->s, F_GETFL)) == -1)
	flags = 0;
    nonblock = (flags & O_NONBLOCK);
    fcntl (sb->s, F_SETFL, flags | O_NONBLOCK);
    while (!done) {
	done = 1;
	foo = tryfunc (sb);
	if (foo < 0 && !nonblock) {
	    if ((errno == EAGAIN) || (errno == EWOULDBLOCK) || (errno == EINPROGRESS)) {
		fd_set readset, writeset, exceptset;
		int maxfd = (sb->s > sb->sockabort[0]) ? sb->s : sb->sockabort[0];
		int num;

		FD_ZERO (&readset);
		FD_ZERO (&writeset);
		FD_ZERO (&exceptset);

		if (sb->action == 3 || sb->action == 6)
		    FD_SET (sb->s, &readset);
		if (sb->action == 2 || sb->action == 1 || sb->action == 4)
		    FD_SET (sb->s, &writeset);
		FD_SET (sb->sockabort[0], &readset);

		num = select (maxfd + 1, &readset, &writeset, &exceptset, NULL);
		if (num == -1) {
		    DEBUG_LOG ("Blocking select(%d) returns -1,errno is %d\n", sb->sockabort[0],errno);
		    fcntl (sb->s, F_SETFL, flags);
		   return -1;
		}

		if (FD_ISSET (sb->sockabort[0], &readset) || FD_ISSET (sb->sockabort[0], &writeset)) {
		    /* reset sock abort pipe */
		    /* read from the pipe to reset it */
		    DEBUG_LOG ("select aborted from signal\n");

		    clearsockabort (sb);
		    DEBUG_LOG ("Done read\n");
		    errno = EINTR;
		    done = 1;
		} else {
		    done = 0;
		}
	    } else if (errno == EINTR)
		done = 1;
	}
    }
    fcntl (sb->s, F_SETFL, flags);
    return foo;
}


static void *bsdlib_threadfunc (void *arg)
{
    struct socketbase *sb = (struct socketbase *) arg;

    DEBUG_LOG ("THREAD_START\n");

    while (1) {
	uae_sem_wait (&sb->sem);

	DEBUG_LOG ("Socket thread got action %d\n", sb->action);

	switch (sb->action) {
	    case 0:       /* kill thread (CloseLibrary) */

		DEBUG_LOG ("THREAD_END\n");

		uae_sem_destroy (&sb->sem);
		return NULL;

	    case 1:       /* Connect */
		sb->resultval = bsdthr_SendRecvAcceptConnect (bsdthr_Connect_2, sb);
		break;

	    /* @@@ Should check (from|to)len so it's 16.. */
	    case 2:       /* Send[to] */
		sb->resultval = bsdthr_SendRecvAcceptConnect (bsdthr_Send_2, sb);
		break;

	    case 3:       /* Recv[from] */
		sb->resultval = bsdthr_SendRecvAcceptConnect (bsdthr_Recv_2, sb);
		break;

	    case 4: {     /* Gethostbyname */
		struct hostent *tmphostent = gethostbyname ((char *)get_real_address (sb->name));

		if (tmphostent) {
		    copyHostent (tmphostent, sb);
		    bsdsocklib_setherrno (sb, 0);
		} else
		    SETHERRNO;

		break;
	    }

	    case 5:       /* WaitSelect */
		sb->resultval = bsdthr_WaitSelect (sb);
		break;

	    case 6:       /* Accept */
		sb->resultval = bsdthr_SendRecvAcceptConnect (bsdthr_Accept_2, sb);
		break;

	    case 7: {
		struct hostent *tmphostent = gethostbyaddr (get_real_address (sb->name), sb->a_addrlen, sb->flags);

		if (tmphostent) {
		    copyHostent (tmphostent, sb);
		    bsdsocklib_setherrno (sb, 0);
		} else
		    SETHERRNO;

		break;
	    }
	}
	SETERRNO;
	SETSIGNAL;
    }
    return NULL;        /* Just to keep GCC happy.. */
}




void host_connect (TrapContext *context, SB, uae_u32 sd, uae_u32 name, uae_u32 namelen)
{
    sb->s = getsock (sb, sd + 1);
    if (sb->s == -1) {
	sb->resultval = -1;
	bsdsocklib_seterrno (sb, 9); /* EBADF */
	return;
    }
    sb->a_addr    = name;
    sb->a_addrlen = namelen;
    sb->action    = 1;

    uae_sem_post (&sb->sem);

    WAITSIGNAL;
}

void host_sendto (TrapContext *context, SB, uae_u32 sd, uae_u32 msg, uae_u32 len, uae_u32 flags, uae_u32 to, uae_u32 tolen)
{
    sb->s = getsock (sb, sd + 1);
    if (sb->s == -1) {
	sb->resultval = -1;
	bsdsocklib_seterrno (sb, 9); /* EBADF */
	return;
    }
    sb->buf    = get_real_address (msg);
    sb->len    = len;
    sb->flags  = flags;
    sb->to     = to;
    sb->tolen  = tolen;
    sb->action = 2;

    uae_sem_post (&sb->sem);

    WAITSIGNAL;
}

void host_recvfrom (TrapContext *context, SB, uae_u32 sd, uae_u32 msg, uae_u32 len, uae_u32 flags, uae_u32 addr, uae_u32 addrlen)
{
    int s = getsock (sb, sd + 1);

    DEBUG_LOG ("Recv[from](%lx, %d, %lx, %ld, %lx, %lx, %d)\n",
	       sb, sd, msg, len, flags, addr, addrlen);

    if (s == -1) {
	sb->resultval = -1;
	bsdsocklib_seterrno (sb, 9); /* EBADF */;
	return;
    }

    sb->s      = s;
    sb->buf    = get_real_address (msg);
    sb->len    = len;
    sb->flags  = flags;
    sb->from   = addr;
    sb->fromlen= addrlen;
    sb->action = 3;

    uae_sem_post (&sb->sem);

    WAITSIGNAL;
}

void host_setsockopt (SB, uae_u32 sd, uae_u32 level, uae_u32 optname, uae_u32 optval, uae_u32 optlen)
{
    int s = getsock (sb, sd + 1);
    int nativelevel = mapsockoptlevel (level);
    int nativeoptname = mapsockoptname(nativelevel, optname);
    void *buf;
    if (s == -1) {
	sb->resultval = -1;
	bsdsocklib_seterrno (sb, 9); /* EBADF */;
	return;
    }

    if (optval) {
	buf = malloc(optlen);
	mapsockoptvalue(nativelevel, nativeoptname, optval, buf);
    } else {
	buf = NULL;
    }
    sb->resultval  = setsockopt (s, nativelevel, nativeoptname, buf, optlen);
    if (buf)
	    free(buf);
    SETERRNO;

    DEBUG_LOG ("setsockopt: sock %d, level %d, 'name' %d(%d), len %d -> %d, %d\n",
	       s, level, optname, nativeoptname, optlen,
	       sb->resultval, errno);
}

uae_u32 host_getsockname (SB, uae_u32 sd, uae_u32 name, uae_u32 namelen)
{
    int s;
    socklen_t len = sizeof (struct sockaddr_in);
    struct sockaddr_in addr;

    DEBUG_LOG ("getsockname(%d,0x%lx,%d) -> ", sd, name, len);

    s = getsock (sb, sd + 1);

    if (s != -1) {
	if (getsockname (s, (struct sockaddr *)&addr, &len)) {
		SETERRNO;
		DEBUG_LOG ("failed (%d)\n", sb->sb_errno);
	    } else {
		int a_nl;
		DEBUG_LOG ("okay\n");
		a_nl = get_long (namelen);
		copysockaddr_n2a (name, &addr, a_nl);
		if (a_nl > 16)
		    put_long (namelen, 16);
		return 0;
	    }
	}

	return -1;
}

uae_u32 host_getpeername (SB, uae_u32 sd, uae_u32 name, uae_u32 namelen)
{
    int s;
    socklen_t len = sizeof (struct sockaddr_in);
    struct sockaddr_in addr;

    DEBUG_LOG ("getpeername(%d,0x%lx,%d) -> ", sd, name, len);

    s = getsock (sb, sd + 1);

    if (s != -1) {
	if (getpeername (s, (struct sockaddr *)&addr, &len)) {
		SETERRNO;
		DEBUG_LOG ("failed (%d)\n", sb->sb_errno);
	} else {
	    int a_nl;
	    DEBUG_LOG ("okay\n");
	    a_nl = get_long (namelen);
	    copysockaddr_n2a (name, &addr, a_nl);
	    if (a_nl > 16)
		put_long (namelen, 16);
	    return 0;
	}
    }

    return -1;
}

void host_gethostbynameaddr (TrapContext *context, SB, uae_u32 name, uae_u32 namelen, long addrtype)
{
    sb->name      = name;
    sb->a_addrlen = namelen;
    sb->flags     = addrtype;
    if (addrtype == -1)
	sb->action  = 4;
    else
	sb->action = 7;

    uae_sem_post (&sb->sem);

    WAITSIGNAL;
}

void host_WaitSelect (TrapContext *context, SB, uae_u32 nfds, uae_u32 readfds, uae_u32 writefds, uae_u32 exceptfds,
		      uae_u32 timeout, uae_u32 sigmp)
{
    uae_u32 wssigs = (sigmp) ? get_long (sigmp) : 0;
    uae_u32 sigs;

    if (wssigs) {
	m68k_dreg (regs, 0) = 0;
	m68k_dreg (regs, 1) = wssigs;
	sigs = CallLib (context, get_long (4), -0x132) & wssigs;	// SetSignal()
	if (sigs) {
	    DEBUG_LOG ("WaitSelect preempted by signals 0x%08x\n", sigs & wssigs);
	    put_long (sigmp, sigs);
	    // Check for zero address -> otherwise WinUAE crashes
	    if (readfds)   fd_zero (readfds, nfds);
	    if (writefds)  fd_zero (writefds, nfds);
	    if (exceptfds) fd_zero (exceptfds, nfds);
	    sb->resultval = 0;
	    bsdsocklib_seterrno (sb, 0);
	    return;
	}
    }

    if (nfds == 0) {
	/* No sockets - Just wait on signals */
	m68k_dreg (regs, 0) = wssigs;
	sigs = CallLib (context, get_long (4), -0x13e);	// Wait()

	if (sigmp)
	put_long (sigmp, sigs & wssigs);

	if (readfds)   fd_zero (readfds, nfds);
	if (writefds)  fd_zero (writefds, nfds);
	if (exceptfds) fd_zero (exceptfds, nfds);
	sb->resultval = 0;
	return;
    }

    sb->nfds = nfds;
    sb->sets [0] = readfds;
    sb->sets [1] = writefds;
    sb->sets [2] = exceptfds;
    sb->timeout  = timeout;
    sb->sigmp    = wssigs;
    sb->action   = 5;

    uae_sem_post (&sb->sem);

    m68k_dreg (regs, 0) = (((uae_u32)1) << sb->signal) | sb->eintrsigs | wssigs;
    sigs = CallLib (context, get_long (4), -0x13e); // Wait()

    if (sigmp)
	put_long (sigmp, sigs & (sb->eintrsigs | wssigs));

    if (sigs & wssigs) {
	/* Received the signals we were waiting on */
	DEBUG_LOG ("WaitSelect: got signal(s) %lx\n", sigs);

	if (!(sigs & (((uae_u32)1) << sb->signal))) {
	    sockabort (sb);
	    WAITSIGNAL;
	}

	sb->resultval = 0;
	if (readfds)   fd_zero (readfds, nfds);
	if (writefds)  fd_zero (writefds, nfds);
	if (exceptfds) fd_zero (exceptfds, nfds);

	bsdsocklib_seterrno (sb, 0);
    } else if (sigs & sb->eintrsigs) {
	/* Wait select was interrupted */
	DEBUG_LOG ("WaitSelect: interrupted\n");

	if (!(sigs & (((uae_u32)1) << sb->signal))) {
	    sockabort (sb);
	    WAITSIGNAL;
	}

	sb->resultval = -1;
	bsdsocklib_seterrno (sb, mapErrno (EINTR));
    }
    clearsockabort(sb);
}



void host_accept (TrapContext *context, SB, uae_u32 sd, uae_u32 name, uae_u32 namelen)
{
    sb->s = getsock (sb, sd + 1);
    if (sb->s == -1) {
	sb->resultval = -1;
	bsdsocklib_seterrno (sb, 9); /* EBADF */
	return;
    }

    DEBUG_LOG ("accept(%d, %lx, %lx)\n", sb->s, name, namelen);
    sb->a_addr    = name;
    sb->a_addrlen = namelen;
    sb->action    = 6;
    sb->len       = sd;

    uae_sem_post (&sb->sem);

    WAITSIGNAL;
    DEBUG_LOG ("Accept returns %d\n", sb->resultval);
}

int host_socket (SB, int af, int type, int protocol)
{
    int sd;
    int s;

    DEBUG_LOG ("socket(%s,%s,%d) -> ",af == AF_INET ? "AF_INET" : "AF_other",
	       type == SOCK_STREAM ? "SOCK_STREAM" : type == SOCK_DGRAM ?
	       "SOCK_DGRAM " : "SOCK_RAW", protocol);

    if ((s = socket (af, type, protocol)) == -1)  {
	SETERRNO;
	DEBUG_LOG ("failed (%d)\n", sb->sb_errno);
	return -1;
    } else {
	int arg = 1;
	sd = getsd (sb, s);
	setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &arg, sizeof(arg));
    }

    sb->ftable[sd-1] = SF_BLOCKING;
    DEBUG_LOG ("socket returns Amiga %d, NativeSide %d\n", sd - 1, s);
    return sd - 1;
}

uae_u32 host_bind (SB, uae_u32 sd, uae_u32 name, uae_u32 namelen)
{
    uae_u32 success = 0;
    struct sockaddr_in addr;
    int len = sizeof (struct sockaddr_in);
    int s;

    s = getsock (sb, sd + 1);
    if (s == -1) {
	sb->resultval = -1;
	bsdsocklib_seterrno (sb, 9); /* EBADF */
	return -1;
    }

    DEBUG_LOG ("bind(%d[%d],0x%lx,%d) -> ", sd, s, name, namelen);
    copysockaddr_a2n (&addr, name, namelen);
    printSockAddr (&addr);
    if ((success = bind (s, (struct sockaddr *)&addr, len)) != 0) {
	SETERRNO;
	DEBUG_LOG ("failed (%d)\n",sb->sb_errno);
    } else {
	DEBUG_LOG ("OK\n");
    }
    return success;
}

uae_u32 host_listen (SB, uae_u32 sd, uae_u32 backlog)
{
    int s;
    uae_u32 success = -1;

    DEBUG_LOG ("listen(%d,%d) -> ", sd, backlog);
    s = getsock (sb, sd + 1);

    if (s == -1) {
	bsdsocklib_seterrno (sb, 9);
	return -1;
    }

    if ((success = listen (s, backlog)) != 0) {
	SETERRNO;
	DEBUG_LOG ("failed (%d)\n", sb->sb_errno);
    } else {
	DEBUG_LOG ("OK\n");
    }
    return success;
}

void host_getprotobyname (TrapContext *context, SB, uae_u32 name)
{
    struct protoent *p = getprotobyname ((char *)get_real_address (name));

    DEBUG_LOG ("Getprotobyname(%s)=%lx\n", get_real_address (name), p);

    if (p == NULL) {
	SETERRNO;
	return;
    }

    copyProtoent (context, sb, p);
    TRACE (("OK (%s, %d)\n", p->p_name, p->p_proto));
}

void host_getprotobynumber (TrapContext *context, SB, uae_u32 number)
{
    struct protoent *p = getprotobynumber(number);
    DEBUG_LOG("getprotobynumber(%d)=%lx\n", number, p);

    if (p == NULL) {
	SETERRNO;
	return;
    }

    copyProtoent (context, sb, p);
    TRACE (("OK (%s, %d)\n", p->p_name, p->p_proto));
}

void host_getservbynameport (TrapContext *context, SB, uae_u32 name, uae_u32 proto, uae_u32 type)
{
    struct servent *s = (type) ?
	getservbyport (name, (char *)get_real_address (proto)) :
	getservbyname ((char *)get_real_address (name), (char *)get_real_address (proto));
    size_t size = 20;
    int numaliases = 0;
    uae_u32 aptr;
    int i;

    if (type) {
	DEBUG_LOG("Getservbyport(%d, %s) = %lx\n", name, get_real_address (proto), s);
    } else {
	DEBUG_LOG("Getservbyname(%s, %s) = %lx\n", get_real_address (name), get_real_address (proto), s);
    }

    if (s == NULL) {
	SETERRNO;
	return;
    }

    // compute total size of servent
    if (s->s_name != NULL)
	size += strlen (s->s_name) + 1;

    if (s->s_proto != NULL)
	size += strlen (s->s_proto) + 1;

    if (s->s_aliases != NULL)
	while (s->s_aliases[numaliases])
	    size += strlen (s->s_aliases[numaliases++]) + 5;

    if (sb->servent) {
	uae_FreeMem (context, sb->servent, sb->serventsize);
    }

    sb->servent = uae_AllocMem (context, size, 0);

    if (!sb->servent) {
	write_log ("BSDSOCK: WARNING - getservby%s() ran out of Amiga memory (couldn't allocate %d bytes)\n",type ? "port" : "name", size);
	bsdsocklib_seterrno (sb, 12); // ENOMEM
	return;
    }

    sb->serventsize = size;

    aptr = sb->servent + 20 + numaliases * 4;

    // transfer servent to Amiga memory
    put_long (sb->servent + 4, sb->servent + 16);
    put_long (sb->servent + 8, (unsigned short)htons (s->s_port));

    for (i = 0; i < numaliases; i++)
	put_long (sb->servent + 16 + i * 4, addstr (&aptr, s->s_aliases[i]));
    put_long (sb->servent + 16 + numaliases * 4, 0);
    put_long (sb->servent, aptr);
    addstr (&aptr, s->s_name);
    put_long (sb->servent + 12, aptr);
    addstr (&aptr, s->s_proto);

    TRACE (("OK (%s, %d)\n", s->s_name, (unsigned short)htons (s->s_port)));
    bsdsocklib_seterrno (sb,0);
}

int host_sbinit (TrapContext *context, SB)
{
    if (pipe (sb->sockabort) < 0) {
	return 0;
    }

    if (fcntl (sb->sockabort[0], F_SETFL, O_NONBLOCK) < 0) {
	    write_log ("Set nonblock failed %d\n", errno);
    }

    uae_sem_init (&sb->sem, 0, 0);
    if (0) {
	write_log ("BSDSOCK: Failed to create semaphore.\n");
	close (sb->sockabort[0]);
	close (sb->sockabort[1]);
	return 0;
    }

    /* Alloc hostent buffer */
    sb->hostent = uae_AllocMem (context, 1024, 0);
    sb->hostentsize = 1024;

    /* @@@ The thread should be PTHREAD_CREATE_DETACHED */
    if (uae_start_thread (bsdlib_threadfunc, (void *)sb, &sb->thread)) {
	write_log ("BSDSOCK: Failed to create thread.\n");
	uae_sem_destroy (&sb->sem);
	close (sb->sockabort[0]);
	close (sb->sockabort[1]);

	return 0;
    }
    return 1;
}

void host_sbcleanup (SB)
{
    int i;

    uae_thread_id thread = sb->thread;
    close (sb->sockabort[0]);
    close (sb->sockabort[1]);
    for (i = 0; i < sb->dtablesize; i++) {
	if (sb->dtable[i] != -1) {
	    close(sb->dtable[i]);
	}
    }
    sb->action = 0;

    uae_sem_post (&sb->sem); /* destroy happens on socket thread */

    /* We need to join with the socket thread to allow the thread to die
     * and clean up resources when the underlying thread layer is pthreads.
     * Ideally, this shouldn't be necessary, but, for example, when SDL uses
     * pthreads, it always creates joinable threads - and we can't do anything
     * about that. */
    uae_wait_thread (thread);
}

void host_sbreset (void)
{
    /* TODO */
}

uae_u32 host_Inet_NtoA (TrapContext *context, SB, uae_u32 in)
{
    char *addr;
    struct in_addr ina;
    uae_u32 buf;

    *(uae_u32 *)&ina = htonl (in);

    TRACE (("Inet_NtoA(%lx) -> ", in));

    if ((addr = inet_ntoa(ina)) != NULL) {
	buf = m68k_areg (regs, 6) + offsetof (struct UAEBSDBase, scratchbuf);
	strncpyha_safe (buf, addr, SCRATCHBUFSIZE);
	TRACE (("%s\n", addr));
	return buf;
    } else
	SETERRNO;

    TRACE (("failed (%d)\n", sb->sb_errno));

    return 0;
}

uae_u32 host_inet_addr (uae_u32 cp)
{
    uae_u32 addr;
    char *cp_rp;

    cp_rp = (char *)get_real_address (cp);

    addr = htonl (inet_addr (cp_rp));

    TRACE (("inet_addr(%s) -> 0x%08lx\n", cp_rp, addr));

    return addr;
}

uae_u32 host_shutdown (SB, uae_u32 sd, uae_u32 how)
{
    SOCKET s;

    TRACE (("shutdown(%d,%d) -> ", sd, how));
    s = getsock (sb, sd + 1);

    if (s != -1) {
	if (shutdown (s, how)) {
	    SETERRNO;
	    TRACE (("failed (%d)\n", sb->sb_errno));
	} else {
	    TRACE (("OK\n"));
	    return 0;
	}
    }

    return -1;
}

int host_dup2socket (SB, int fd1, int fd2) {
    int s1, s2;

    TRACE (("dup2socket(%d,%d) -> ", fd1, fd2));
    fd1++;

    s1 = getsock (sb, fd1);
    if (s1 != -1) {
	if (fd2 != -1) {
	    if ((unsigned int) (fd2) >= (unsigned int) sb->dtablesize) {
		TRACE (("Bad file descriptor (%d)\n", fd2));
		bsdsocklib_seterrno (sb, 9); /* EBADF */
	    }
	    fd2++;
	    s2 = getsock (sb, fd2);
	    if (s2 != -1) {
		close (s2);
	    }
	    setsd (sb, fd2, dup (s1));
	    TRACE (("0(%d)\n", getsock (sb, fd2)));
	    return 0;
	} else {
	    fd2 = getsd (sb, 1);
		if (fd2 != -1) {
	    setsd (sb, fd2, dup (s1));
			TRACE (("%d(%d)\n", fd2, getsock (sb, fd2)));
	    return (fd2 - 1);
		} else {
			TRACE(("-1\n"));
			return -1;
		}
	}
    }
    TRACE (("-1\n"));
    return -1;
}

uae_u32 host_getsockopt (SB, uae_u32 sd, uae_u32 level, uae_u32 optname,
			 uae_u32 optval, uae_u32 optlen)
{
    socklen_t len = 0;
    int r;
    int s;
    int nativelevel = mapsockoptlevel(level);
    int nativeoptname = mapsockoptname(nativelevel, optname);
    void *buf = NULL;
    s = getsock (sb, sd + 1);

    if (s == -1) {
	bsdsocklib_seterrno(sb, 9); /* EBADF */
	return -1;
    }

    if (optlen) {
	len = get_long (optlen);
	buf = malloc(len);
	if (buf == NULL) {
	   return -1;
	}
    }

    r = getsockopt (s, nativelevel, nativeoptname,
	optval ? buf : NULL, optlen ? &len : NULL);

    if (optlen)
	put_long (optlen, len);

    SETERRNO;
    DEBUG_LOG ("getsockopt: sock AmigaSide %d NativeSide %d, level %d, 'name' %x(%d), len %d -> %d, %d\n",
	sd, s, level, optname, nativeoptname, len, r, errno);

    if (optval) {
	if (r == 0) {
	    mapsockoptreturn(nativelevel, nativeoptname, optval, buf);
	}
    }

    if (buf != NULL)
	free(buf);
    return r;
}

uae_u32 host_IoctlSocket (SB, uae_u32 sd, uae_u32 request, uae_u32 arg)
{
    int sock = getsock (sb, sd + 1);
    int r, argval = get_long (arg);
    long flags;

    if (sock == -1) {
	sb->resultval = -1;
	bsdsocklib_seterrno (sb, 9); /* EBADF */
	return -1;
    }

    if ((flags = fcntl (sock, F_GETFL)) == -1) {
	SETERRNO;
	return -1;
    }

    DEBUG_LOG ("Ioctl code is %lx, flags are %d\n", request, flags);

    switch (request) {
	case 0x8004667B: /* FIOGETOWN */
	    sb->ownertask = get_long (arg);
	    return 0;

	case 0x8004667C: /* FIOSETOWN */
	    put_long (arg,sb->ownertask);
	    return 0;
	case 0x8004667D: /* FIOASYNC */
#	ifdef O_ASYNC
	    r = fcntl (sock, F_SETFL, argval ? flags | O_ASYNC : flags & ~O_ASYNC);
	    return r;
#	else
	    /* O_ASYNC is only available on Linux and BSD systems */
	    return fcntl (sock, F_GETFL);
#	endif

	case 0x8004667E: /* FIONBIO */
	    r = fcntl (sock, F_SETFL, argval ?
		       flags | O_NONBLOCK : flags & ~O_NONBLOCK);
	    if (argval) {
		DEBUG_LOG ("nonblocking\n");
		sb->ftable[sd-1] &= ~SF_BLOCKING;
	    } else {
		DEBUG_LOG ("blocking\n");
		sb->ftable[sd-1] |= SF_BLOCKING;
	    }
	    return r;

	case 0x4004667F: /* FIONREAD */
	    r = ioctl (sock, FIONREAD, &flags);
	    if (r >= 0) {
		put_long (arg, flags);
	    }
	    return r;

    } /* end switch */

    bsdsocklib_seterrno (sb, EINVAL);
    return -1;
}

int host_CloseSocket (SB, int sd)
{
    int s = getsock (sb, sd + 1);
    int retval;

    if (s == -1) {
	bsdsocklib_seterrno (sb, 9); /* EBADF */
	return -1;
    }

    /*
    if (checksd (sb, sd + 1) == 1) {
	return 0;
    }
    */
    DEBUG_LOG ("CloseSocket Amiga: %d, NativeSide %d\n", sd, s);
    retval = close (s);
    SETERRNO;
    releasesock (sb, sd + 1);
    return retval;
}

void host_closesocketquick (int s)
{
    struct linger l;
    l.l_onoff = 0;
    l.l_linger = 0;
    if (s != -1) {
	setsockopt (s, SOL_SOCKET, SO_LINGER, &l, sizeof(l));
	close (s);
    }
}

uae_u32 host_gethostname (uae_u32 name, uae_u32 namelen)
{
    return gethostname ((char *)get_real_address (name), namelen);
}

int init_socket_layer(void)
{
    uae_sem_init(&sem_queue, 0, 1);
    if (0 /* @@@ */) {
	DEBUG_LOG("Can't create sem %d\n", errno);
	return 0;
    }

    return 1;
}

void clearsockabort (SB)
{
    int chr;
    int num;

    while ((num = read (sb->sockabort[0], &chr, sizeof(chr))) >= 0) {
	DEBUG_LOG ("Sockabort got %d bytes\n", num);
	;
    }
}

void sockabort (SB)
{
    int chr = 1;
    DEBUG_LOG ("Sock abort!!\n");
    write (sb->sockabort[1], &chr, sizeof (chr));
}

void locksigqueue (void)
{
    uae_sem_wait(&sem_queue);
}

void unlocksigqueue (void)
{
    uae_sem_post(&sem_queue);
}
#endif