lib/libc/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  * @(#)svc_run.c 1.1 87/10/13 Copyr 1984 Sun Micro
  30  * @(#)svc_run.c        2.1 88/07/29 4.0 RPCSRC
  31  * $FreeBSD: src/lib/libc/rpc/svc_run.c,v 1.10 1999/08/28 00:00:49 peter Exp $
  32  * $DragonFly: src/lib/libc/rpc/svc_run.c,v 1.4 2005/11/13 12:27:04 swildner Exp $
  33  */
  34
  35 /*
  36  * This is the rpc server side idle loop
  37  * Wait for input, call server program.
  38  */
  39 #include "namespace.h"
  40 #include <rpc/rpc.h>
  41 #include <stdio.h>
  42 #include <sys/errno.h>
  43 #include <sys/types.h>
  44 #include <sys/time.h>
  45 #include <unistd.h>
  46 #include <stdlib.h>
  47 #include <string.h>
  48 #include "un-namespace.h"
  49
  50 extern int __svc_fdsetsize;
  51 extern fd_set *__svc_fdset;
  52
  53 void
  54 svc_run(void)
  55 {
  56         fd_set *fds;
  57
  58         for (;;) {
  59                 if (__svc_fdset) {
  60                         int bytes = howmany(__svc_fdsetsize, NFDBITS) *
  61                                 sizeof(fd_mask);
  62                         fds = (fd_set *)malloc(bytes);
  63                         memcpy(fds, __svc_fdset, bytes);
  64                 } else
  65                         fds = NULL;
  66                 switch (_select(svc_maxfd + 1, fds, NULL, NULL,
  67                                 (struct timeval *)0)) {
  68                 case -1:
  69                         if (errno == EINTR) {
  70                                 if (fds)
  71                                         free(fds);
  72                                 continue;
  73                         }
  74                         perror("svc_run: - select failed");
  75                         if (fds)
  76                                 free(fds);
  77                         return;
  78                 case 0:
  79                         if (fds)
  80                                 free(fds);
  81                         continue;
  82                 default:
  83                         /* if fds == NULL, _select() can't return a result */
  84                         svc_getreqset2(fds, svc_maxfd + 1);
  85                         free(fds);
  86                 }
  87         }
  88 }