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svc_run.c revision 1.16 
      1 /*	$NetBSD: svc_run.c,v 1.16 2000/06/04 04:35:14 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 1.16 2000/06/04 04:35:14 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 #ifdef __weak_alias
     57 __weak_alias(svc_run,_svc_run)
     58 __weak_alias(svc_exit,_svc_exit)
     59 #endif
     60 
     61 void
     62 svc_run()
     63 {
     64 	fd_set readfds;
     65 #ifdef __REENT
     66 	extern rwlock_t svc_fd_lock;
     67 #endif
     68 
     69 	for (;;) {
     70 		rwlock_rdlock(&svc_fd_lock);
     71 		readfds = svc_fdset;
     72 		rwlock_unlock(&svc_fd_lock);
     73 		switch (select(svc_maxfd+1, &readfds, (fd_set *)0, (fd_set *)0,
     74 			       (struct timeval *)0)) {
     75 		case -1:
     76 			if (errno == EINTR) {
     77 				continue;
     78 			}
     79 			warn("svc_run: - select failed");
     80 			return;
     81 		case 0:
     82 			continue;
     83 		default:
     84 			svc_getreqset(&readfds);
     85 		}
     86 	}
     87 }
     88 
     89 /*
     90  *      This function causes svc_run() to exit by telling it that it has no
     91  *      more work to do.
     92  */
     93 void
     94 svc_exit()
     95 {
     96 #ifdef __REENT
     97 	extern rwlock_t svc_fd_lock;
     98 #endif
     99 
    100 	rwlock_wrlock(&svc_fd_lock);
    101 	FD_ZERO(&svc_fdset);
    102 	rwlock_unlock(&svc_fd_lock);
    103 }
    104