source: trunk/minix/lib/ip/accept.c@ 12

#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <netinet/in.h>

#include <net/netlib.h>
#include <net/gen/in.h>
#include <net/gen/tcp.h>
#include <net/gen/tcp_io.h>
#include <net/gen/udp.h>
#include <net/gen/udp_io.h>

#define DEBUG 0

static int _tcp_accept(int socket, struct sockaddr *_RESTRICT address,
        socklen_t *_RESTRICT address_len);

int accept(int socket, struct sockaddr *_RESTRICT address,
        socklen_t *_RESTRICT address_len)
{
        int r;

        r= _tcp_accept(socket, address, address_len);
        return r;

#if DEBUG
        fprintf(stderr, "accept: not implemented for fd %d\n", socket);
#endif
        errno= ENOSYS;
        return -1;
}

static int _tcp_accept(int socket, struct sockaddr *_RESTRICT address,
        socklen_t *_RESTRICT address_len)
{
        int r, s1, t_errno;
        tcp_cookie_t cookie;

        s1= open(TCP_DEVICE, O_RDWR);
        if (s1 == -1)
                return s1;
        r= ioctl(s1, NWIOGTCPCOOKIE, &cookie);
        if (r == -1)
        {
                t_errno= errno;
                close(s1);
                errno= t_errno;
                return -1;
        }
        r= ioctl(socket, NWIOTCPACCEPTTO, &cookie);
        if (r == -1)
        {
                t_errno= errno;
                close(s1);
                errno= t_errno;
                return -1;
        }
        if (address != NULL)
                getpeername(s1, address, address_len);
        return s1;
}