xref: /freebsd/lib/libc/rpc/svc_run.c (revision ee41f1b1cf5e3d4f586cb85b46123b416275862c)
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 
30 #if defined(LIBC_SCCS) && !defined(lint)
31 /*static char *sccsid = "from: @(#)svc_run.c 1.1 87/10/13 Copyr 1984 Sun Micro";*/
32 /*static char *sccsid = "from: @(#)svc_run.c	2.1 88/07/29 4.0 RPCSRC";*/
33 static char *rcsid = "$FreeBSD$";
34 #endif
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 <rpc/rpc.h>
42 #include <stdio.h>
43 #include <sys/errno.h>
44 #include <sys/types.h>
45 #include <sys/time.h>
46 #include <unistd.h>
47 #include <stdlib.h>
48 #include <string.h>
49 #include "un-namespace.h"
50 
51 extern int __svc_fdsetsize;
52 extern fd_set *__svc_fdset;
53 
54 void
55 svc_run()
56 {
57 	fd_set *fds;
58 
59 	for (;;) {
60 		if (__svc_fdset) {
61 			int bytes = howmany(__svc_fdsetsize, NFDBITS) *
62 				sizeof(fd_mask);
63 			fds = (fd_set *)malloc(bytes);
64 			memcpy(fds, __svc_fdset, bytes);
65 		} else
66 			fds = NULL;
67 		switch (_select(svc_maxfd + 1, fds, NULL, NULL,
68 				(struct timeval *)0)) {
69 		case -1:
70 			if (errno == EINTR) {
71 				if (fds)
72 					free(fds);
73 				continue;
74 			}
75 			perror("svc_run: - select failed");
76 			if (fds)
77 				free(fds);
78 			return;
79 		case 0:
80 			if (fds)
81 				free(fds);
82 			continue;
83 		default:
84 			/* if fds == NULL, _select() can't return a result */
85 			svc_getreqset2(fds, svc_maxfd + 1);
86 			free(fds);
87 		}
88 	}
89 }
90