lib/libc/rpc/svc_run.c

   1 /*      $NetBSD: svc_run.c,v 1.19 2003/01/18 11:29:07 thorpej Exp $     */
   2
   3 /*
   4  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   5  * unrestricted use provided that this legend is included on all tape
   6  * media and as a part of the software program in whole or part.  Users
   7  * may copy or modify Sun RPC without charge, but are not authorized
   8  * to license or distribute it to anyone else except as part of a product or
   9  * program developed by the user.
  10  *
  11  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  12  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  13  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  14  *
  15  * Sun RPC is provided with no support and without any obligation on the
  16  * part of Sun Microsystems, Inc. to assist in its use, correction,
  17  * modification or enhancement.
  18  *
  19  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  20  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  21  * OR ANY PART THEREOF.
  22  *
  23  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  24  * or profits or other special, indirect and consequential damages, even if
  25  * Sun has been advised of the possibility of such damages.
  26  *
  27  * Sun Microsystems, Inc.
  28  * 2550 Garcia Avenue
  29  * Mountain View, California  94043
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #if defined(LIBC_SCCS) && !defined(lint)
  34 #if 0
  35 static char *sccsid = "@(#)svc_run.c 1.1 87/10/13 Copyr 1984 Sun Micro";
  36 static char *sccsid = "@(#)svc_run.c    2.1 88/07/29 4.0 RPCSRC";
  37 #else
  38 __RCSID("$NetBSD: svc_run.c,v 1.19 2003/01/18 11:29:07 thorpej Exp $");
  39 #endif
  40 #endif
  41
  42 /*
  43  * This is the rpc server side idle loop
  44  * Wait for input, call server program.
  45  */
  46 #include "namespace.h"
  47 #include "reentrant.h"
  48 #include <err.h>
  49 #include <errno.h>
  50 #include <stdio.h>
  51 #include <string.h>
  52 #include <unistd.h>
  53
  54 #include <rpc/rpc.h>
  55
  56 #include "rpc_internal.h"
  57
  58 #ifdef __weak_alias
  59 __weak_alias(svc_run,_svc_run)
  60 __weak_alias(svc_exit,_svc_exit)
  61 #endif
  62
  63 void
  64 svc_run()
  65 {
  66         fd_set readfds, cleanfds;
  67         struct timeval timeout;
  68 #ifdef _REENTRANT
  69         extern rwlock_t svc_fd_lock;
  70 #endif
  71
  72         timeout.tv_sec = 30;
  73         timeout.tv_usec = 0;
  74
  75         for (;;) {
  76                 rwlock_rdlock(&svc_fd_lock);
  77                 readfds = svc_fdset;
  78                 cleanfds = svc_fdset;
  79                 rwlock_unlock(&svc_fd_lock);
  80                 switch (select(svc_maxfd+1, &readfds, NULL, NULL, &timeout)) {
  81                 case -1:
  82                         if (errno == EINTR) {
  83                                 continue;
  84                         }
  85                         warn("svc_run: - select failed");
  86                         return;
  87                 case 0:
  88                         __svc_clean_idle(&cleanfds, 30, FALSE);
  89                         continue;
  90                 default:
  91                         svc_getreqset(&readfds);
  92                 }
  93         }
  94 }
  95
  96 /*
  97  *      This function causes svc_run() to exit by telling it that it has no
  98  *      more work to do.
  99  */
 100 void
 101 svc_exit()
 102 {
 103 #ifdef _REENTRANT
 104         extern rwlock_t svc_fd_lock;
 105 #endif
 106
 107         rwlock_wrlock(&svc_fd_lock);
 108         FD_ZERO(&svc_fdset);
 109         rwlock_unlock(&svc_fd_lock);
 110 }