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  * $NetBSD: svc_run.c,v 1.17 2000/07/06 03:10:35 christos Exp $
  32  * $FreeBSD: src/lib/libc/rpc/svc_run.c,v 1.20 2006/02/27 22:10:59 deischen Exp $
  33  * $DragonFly: src/lib/libc/rpc/svc_run.c,v 1.4 2005/11/13 12:27:04 swildner Exp $
  34  */
  35
  36 /*
  37  * This is the rpc server side idle loop
  38  * Wait for input, call server program.
  39  */
  40 #include "namespace.h"
  41 #include "reentrant.h"
  42 #include <err.h>
  43 #include <errno.h>
  44 #include <rpc/rpc.h>
  45 #include <stdio.h>
  46 #include <string.h>
  47 #include <unistd.h>
  48 #include "un-namespace.h"
  49
  50 #include <rpc/rpc.h>
  51 #include "rpc_com.h"
  52 #include "mt_misc.h"
  53
  54 void
  55 svc_run(void)
  56 {
  57         fd_set readfds, cleanfds;
  58         struct timeval timeout;
  59
  60         timeout.tv_sec = 30;
  61         timeout.tv_usec = 0;
  62
  63         for (;;) {
  64                 rwlock_rdlock(&svc_fd_lock);
  65                 readfds = svc_fdset;
  66                 cleanfds = svc_fdset;
  67                 rwlock_unlock(&svc_fd_lock);
  68                 switch (_select(svc_maxfd+1, &readfds, NULL, NULL, &timeout)) {
  69                 case -1:
  70                         FD_ZERO(&readfds);
  71                         if (errno == EINTR) {
  72                                 continue;
  73                         }
  74                         _warn("svc_run: - select failed");
  75                         return;
  76                 case 0:
  77                         __svc_clean_idle(&cleanfds, 30, FALSE);
  78                         continue;
  79                 default:
  80                         svc_getreqset(&readfds);
  81                 }
  82         }
  83 }
  84
  85 /*
  86  *      This function causes svc_run() to exit by telling it that it has no
  87  *      more work to do.
  88  */
  89 void
  90 svc_exit(void)
  91 {
  92         rwlock_wrlock(&svc_fd_lock);
  93         FD_ZERO(&svc_fdset);
  94         rwlock_unlock(&svc_fd_lock);
  95 }