lib/ip/getsockname.c

   1 /*
   2
   3    getsockname()
   4
   5    from socket emulation library for Minix 2.0.x
   6
   7 */
   8
   9
  10 #include <errno.h>
  11 #include <stdio.h>
  12 #include <string.h>
  13 #include <sys/ioctl.h>
  14 #include <sys/socket.h>
  15 #include <netinet/in.h>
  16
  17 #include <net/gen/in.h>
  18 #include <net/gen/tcp.h>
  19 #include <net/gen/tcp_io.h>
  20 #include <net/gen/udp.h>
  21 #include <net/gen/udp_io.h>
  22
  23
  24 /*
  25 #define DEBUG 0
  26 */
  27
  28 /*
  29    getsockname...
  30 */
  31 int getsockname(int fd, struct sockaddr *_RESTRICT address,
  32    socklen_t *_RESTRICT address_len)
  33 {
  34         nwio_tcpconf_t tcpconf;
  35         socklen_t len;
  36         struct sockaddr_in sin;
  37
  38 #ifdef DEBUG
  39         fprintf(stderr,"mnx_getsockname: ioctl fd %d.\n", fd);
  40 #endif
  41         if (ioctl(fd, NWIOGTCPCONF, &tcpconf)==-1) {
  42 #ifdef DEBUG
  43            fprintf(stderr,"mnx_getsockname: error %d\n", errno);
  44 #endif
  45            return (-1);
  46            }
  47 #ifdef DEBUG1
  48         fprintf(stderr, "mnx_getsockname: from %s, %u",
  49                         inet_ntoa(tcpconf.nwtc_remaddr),
  50                         ntohs(tcpconf.nwtc_remport));
  51         fprintf(stderr," for %s, %u\n",
  52                         inet_ntoa(tcpconf.nwtc_locaddr),
  53                         ntohs(tcpconf.nwtc_locport));
  54 #endif
  55 /*
  56         addr->sin_addr.s_addr = tcpconf.nwtc_remaddr ;
  57         addr->sin_port = tcpconf.nwtc_locport;
  58 */
  59         memset(&sin, '\0', sizeof(sin));
  60         sin.sin_family= AF_INET;
  61         sin.sin_addr.s_addr= tcpconf.nwtc_locaddr ;
  62         sin.sin_port= tcpconf.nwtc_locport;
  63
  64         len= *address_len;
  65         if (len > sizeof(sin))
  66                 len= sizeof(sin);
  67         memcpy(address, &sin, len);
  68         *address_len= len;
  69
  70         return 0;
  71 }
  72
  73
  74
  75
  76
  77
  78
  79