static size_t httpfs_read( struct uufile *f, void *buf, size_t len)
{
struct uusocket *s = f->impl;
if( s == 0 || s->prot_data == 0 )
return -1;
return tcp_recvfrom( s->prot_data, buf, len, &s->addr, 0, 0 );
}
ssize_t psock_recvfrom(FAR struct socket *psock, FAR void *buf, size_t len,
int flags,FAR struct sockaddr *from,
FAR socklen_t *fromlen)
{
#if defined(CONFIG_NET_UDP) || defined(CONFIG_NET_TCP)
#ifdef CONFIG_NET_IPv6
FAR struct sockaddr_in6 *infrom = (struct sockaddr_in6 *)from;
#else
FAR struct sockaddr_in *infrom = (struct sockaddr_in *)from;
#endif
#endif
ssize_t ret;
int err;
/* Verify that non-NULL pointers were passed */
#ifdef CONFIG_DEBUG
if (!buf)
{
err = EINVAL;
goto errout;
}
#endif
/* Verify that the sockfd corresponds to valid, allocated socket */
if (!psock || psock->s_crefs <= 0)
{
err = EBADF;
goto errout;
}
/* If a 'from' address has been provided, verify that it is large
* enough to hold this address family.
*/
if (from)
{
#ifdef CONFIG_NET_IPv6
if (*fromlen < sizeof(struct sockaddr_in6))
#else
if (*fromlen < sizeof(struct sockaddr_in))
#endif
{
err = EINVAL;
goto errout;
}
}
/* Set the socket state to receiving */
psock->s_flags = _SS_SETSTATE(psock->s_flags, _SF_RECV);
/* Perform the TCP/IP or UDP recv() operation */
#if defined(CONFIG_NET_UDP) && defined(CONFIG_NET_TCP)
if (psock->s_type == SOCK_STREAM)
{
ret = tcp_recvfrom(psock, buf, len, infrom);
}
else
{
ret = udp_recvfrom(psock, buf, len, infrom);
}
#elif defined(CONFIG_NET_TCP)
ret = tcp_recvfrom(psock, buf, len, infrom);
#elif defined(CONFIG_NET_UDP)
ret = udp_recvfrom(psock, buf, len, infrom);
#else
ret = -ENOSYS;
#endif
/* Set the socket state to idle */
psock->s_flags = _SS_SETSTATE(psock->s_flags, _SF_IDLE);
/* Handle returned errors */
if (ret < 0)
{
err = -ret;
goto errout;
}
/* Success return */
return ret;
errout:
errno = err;
return ERROR;
}