lib/libc/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
  22
  23 /*
  24 #define DEBUG 0
  25 */
  26
  27 /*
  28    getsockname...
  29 */
  30 int getsockname(int fd, struct sockaddr *_RESTRICT address,
  31    socklen_t *_RESTRICT address_len)
  32 {
  33         nwio_tcpconf_t tcpconf;
  34         socklen_t len;
  35         struct sockaddr_in sin;
  36
  37 #ifdef DEBUG
  38         fprintf(stderr,"mnx_getsockname: ioctl fd %d.\n", fd);
  39 #endif
  40         if (ioctl(fd, NWIOGTCPCONF, &tcpconf)==-1) {
  41 #ifdef DEBUG
  42            fprintf(stderr,"mnx_getsockname: error %d\n", errno);
  43 #endif
  44            return (-1);
  45            }
  46 #ifdef DEBUG1
  47         fprintf(stderr, "mnx_getsockname: from %s, %u",
  48                         inet_ntoa(tcpconf.nwtc_remaddr),
  49                         ntohs(tcpconf.nwtc_remport));
  50         fprintf(stderr," for %s, %u\n",
  51                         inet_ntoa(tcpconf.nwtc_locaddr),
  52                         ntohs(tcpconf.nwtc_locport));
  53 #endif
  54 /*
  55         addr->sin_addr.s_addr = tcpconf.nwtc_remaddr ;
  56         addr->sin_port = tcpconf.nwtc_locport;
  57 */
  58         memset(&sin, '\0', sizeof(sin));
  59         sin.sin_family= AF_INET;
  60         sin.sin_addr.s_addr= tcpconf.nwtc_locaddr ;
  61         sin.sin_port= tcpconf.nwtc_locport;
  62
  63         len= *address_len;
  64         if (len > sizeof(sin))
  65                 len= sizeof(sin);
  66         memcpy(address, &sin, len);
  67         *address_len= len;
  68
  69         return 0;
  70 }
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