workbench/network/stacks/AROSTCP/netlib/init_inet_daemon.c

   1 /* $Id$
   2  *
   3  *      init_inet_daemon.c - obtain socket accepted by the inetd
   4  *
   5  *      Copyright © 1994 AmiTCP/IP Group,
   6  *                       Network Solutions Development Inc.
   7  *                       All rights reserved.
   8  */
   9
  10 /****** net.lib/init_inet_daemon ****************************************
  11
  12     NAME
  13         init_inet_daemon - obtain socket accepted by the inetd
  14
  15     SYNOPSIS
  16         int init_inet_daemon(void);
  17
  18     FUNCTION
  19         Obtain the server socket accepted by the inetd, the Internet
  20         super-server.
  21
  22     RETURN VALUES
  23         socket descriptor if successful, -1 with specific error code
  24         on errno otherwise.
  25
  26     ERRORS
  27         ENXIO     - The process was not started by the inetd.
  28
  29     NOTES
  30         If the process was started by the inetd, but the ObtainSocket()
  31         call fails, then this function exit()s with some specific exit
  32         code, so that inetd can clean up the unobtained socket.
  33
  34         Use the net.lib function set_socket_stdio() to redirect stdio,
  35         stdout and stderr to the returned socket, if necessary.
  36
  37     SEE ALSO
  38         serveraccept(), set_socket_stdio(), bsdsocket/ObtainSocket(),
  39         netutil/inetd
  40 *****************************************************************************
  41 *
  42 */
  43
  44 #include <exec/types.h>
  45 #include <dos/dosextens.h>
  46
  47 #include <proto/socket.h>
  48 #include <proto/exec.h>
  49
  50 #include <stdlib.h>
  51 #include <errno.h>
  52 #include <inetd.h>
  53
  54 int
  55 init_inet_daemon(void)
  56 {
  57   struct Process *me = (struct Process *)FindTask(NULL);
  58   struct DaemonMessage *dm = (struct DaemonMessage *)me->pr_ExitData;
  59   int sock;
  60
  61   if (dm == NULL) {
  62     /*
  63      * No DaemonMessage, return error code
  64      */
  65     errno = ENXIO; /* "Device not configured" */
  66     return -1;
  67   }
  68
  69   /*
  70    * Obtain the server socket
  71    */
  72   sock = ObtainSocket(dm->dm_Id, dm->dm_Family, dm->dm_Type, 0);
  73   if (sock < 0) {
  74     /*
  75      * If ObtainSocket fails we need to exit with this specific exit code
  76      * so that the inetd knows to clean things up
  77      */
  78     exit(DERR_OBTAIN);
  79   }
  80
  81   return sock;
  82 }