libc/inet/rpc/svc_run.c

   1 /*
   2  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   3  * unrestricted use provided that this legend is included on all tape
   4  * media and as a part of the software program in whole or part.  Users
   5  * may copy or modify Sun RPC without charge, but are not authorized
   6  * to license or distribute it to anyone else except as part of a product or
   7  * program developed by the user.
   8  *
   9  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  10  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  11  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  12  *
  13  * Sun RPC is provided with no support and without any obligation on the
  14  * part of Sun Microsystems, Inc. to assist in its use, correction,
  15  * modification or enhancement.
  16  *
  17  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  18  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  19  * OR ANY PART THEREOF.
  20  *
  21  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  22  * or profits or other special, indirect and consequential damages, even if
  23  * Sun has been advised of the possibility of such damages.
  24  *
  25  * Sun Microsystems, Inc.
  26  * 2550 Garcia Avenue
  27  * Mountain View, California  94043
  28  */
  29 /*
  30  * This is the rpc server side idle loop
  31  * Wait for input, call server program.
  32  */
  33
  34 #include <errno.h>
  35 #include <unistd.h>
  36 #include <sys/poll.h>
  37 #include "rpc_private.h"
  38
  39 /* used by svc_[max_]pollfd */
  40
  41 /* This function can be used as a signal handler to terminate the
  42    server loop.  */
  43 void
  44 svc_exit (void)
  45 {
  46   free (svc_pollfd);
  47   svc_pollfd = NULL;
  48   svc_max_pollfd = 0;
  49 }
  50
  51 void
  52 svc_run (void)
  53 {
  54   int i;
  55
  56   for (;;)
  57     {
  58       struct pollfd *my_pollfd;
  59
  60       if (svc_max_pollfd == 0 && svc_pollfd == NULL)
  61         return;
  62
  63       my_pollfd = malloc (sizeof (struct pollfd) * svc_max_pollfd);
  64       for (i = 0; i < svc_max_pollfd; ++i)
  65         {
  66           my_pollfd[i].fd = svc_pollfd[i].fd;
  67           my_pollfd[i].events = svc_pollfd[i].events;
  68           my_pollfd[i].revents = 0;
  69         }
  70
  71       switch (i = poll (my_pollfd, svc_max_pollfd, -1))
  72         {
  73         case -1:
  74           free (my_pollfd);
  75           if (errno == EINTR)
  76             continue;
  77           perror ("svc_run: - poll failed");
  78           return;
  79         case 0:
  80           free (my_pollfd);
  81           continue;
  82         default:
  83           svc_getreq_poll (my_pollfd, i);
  84           free (my_pollfd);
  85         }
  86     }
  87 }