lib/libc/rpc/svc_run.c

   1 /*-
   2  * Copyright (c) 2009, Sun Microsystems, Inc.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are met:
   7  * - Redistributions of source code must retain the above copyright notice,
   8  *   this list of conditions and the following disclaimer.
   9  * - Redistributions in binary form must reproduce the above copyright notice,
  10  *   this list of conditions and the following disclaimer in the documentation
  11  *   and/or other materials provided with the distribution.
  12  * - Neither the name of Sun Microsystems, Inc. nor the names of its
  13  *   contributors may be used to endorse or promote products derived
  14  *   from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  17  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * @(#)svc_run.c 1.1 87/10/13 Copyr 1984 Sun Micro
  29  * @(#)svc_run.c        2.1 88/07/29 4.0 RPCSRC
  30  * $NetBSD: svc_run.c,v 1.17 2000/07/06 03:10:35 christos Exp $
  31  * $FreeBSD: src/lib/libc/rpc/svc_run.c,v 1.20 2006/02/27 22:10:59 deischen 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 "reentrant.h"
  41 #include <err.h>
  42 #include <errno.h>
  43 #include <rpc/rpc.h>
  44 #include <stdio.h>
  45 #include <string.h>
  46 #include <unistd.h>
  47 #include "un-namespace.h"
  48
  49 #include <rpc/rpc.h>
  50 #include "rpc_com.h"
  51 #include "mt_misc.h"
  52
  53 void
  54 svc_run(void)
  55 {
  56         fd_set readfds, cleanfds;
  57         struct timeval timeout;
  58
  59         timeout.tv_sec = 30;
  60         timeout.tv_usec = 0;
  61
  62         for (;;) {
  63                 rwlock_rdlock(&svc_fd_lock);
  64                 readfds = svc_fdset;
  65                 cleanfds = svc_fdset;
  66                 rwlock_unlock(&svc_fd_lock);
  67                 switch (_select(svc_maxfd+1, &readfds, NULL, NULL, &timeout)) {
  68                 case -1:
  69                         FD_ZERO(&readfds);
  70                         if (errno == EINTR) {
  71                                 continue;
  72                         }
  73                         _warn("svc_run: - select failed");
  74                         return;
  75                 case 0:
  76                         __svc_clean_idle(&cleanfds, 30, FALSE);
  77                         continue;
  78                 default:
  79                         svc_getreqset(&readfds);
  80                 }
  81         }
  82 }
  83
  84 /*
  85  *      This function causes svc_run() to exit by telling it that it has no
  86  *      more work to do.
  87  */
  88 void
  89 svc_exit(void)
  90 {
  91         rwlock_wrlock(&svc_fd_lock);
  92         FD_ZERO(&svc_fdset);
  93         rwlock_unlock(&svc_fd_lock);
  94 }