1/*
2 * Copyright (c) 2010, Oracle America, Inc.
3 * Redistribution and use in source and binary forms, with or without
4 * modification, are permitted provided that the following conditions are
5 * met:
6 *
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above
10 * copyright notice, this list of conditions and the following
11 * disclaimer in the documentation and/or other materials
12 * provided with the distribution.
13 * * Neither the name of the "Oracle America, Inc." nor the names of its
14 * contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
20 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
21 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
22 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
24 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
27 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 *
30 * This is the rpc server side idle loop
31 * Wait for input, call server program.
32 */
33
34#include <errno.h>
35#include <unistd.h>
36#include <libintl.h>
37#include <sys/poll.h>
38#include <rpc/rpc.h>
39
40/* This function can be used as a signal handler to terminate the
41 server loop. */
42void
43svc_exit (void)
44{
45 free (svc_pollfd);
46 svc_pollfd = NULL;
47 svc_max_pollfd = 0;
48}
49libc_hidden_nolink_sunrpc (svc_exit, GLIBC_2_0)
50
51void
52svc_run (void)
53{
54 int i;
55 struct pollfd *my_pollfd = NULL;
56 int last_max_pollfd = 0;
57
58 for (;;)
59 {
60 int max_pollfd = svc_max_pollfd;
61 if (max_pollfd == 0 && svc_pollfd == NULL)
62 break;
63
64 if (last_max_pollfd != max_pollfd)
65 {
66 struct pollfd *new_pollfd
67 = realloc (my_pollfd, sizeof (struct pollfd) * max_pollfd);
68
69 if (new_pollfd == NULL)
70 {
71 perror (_("svc_run: - out of memory"));
72 break;
73 }
74
75 my_pollfd = new_pollfd;
76 last_max_pollfd = max_pollfd;
77 }
78
79 for (i = 0; i < max_pollfd; ++i)
80 {
81 my_pollfd[i].fd = svc_pollfd[i].fd;
82 my_pollfd[i].events = svc_pollfd[i].events;
83 my_pollfd[i].revents = 0;
84 }
85
86 switch (i = __poll (my_pollfd, max_pollfd, -1))
87 {
88 case -1:
89 if (errno == EINTR)
90 continue;
91 perror (_("svc_run: - poll failed"));
92 break;
93 case 0:
94 continue;
95 default:
96 svc_getreq_poll (my_pollfd, i);
97 continue;
98 }
99 break;
100 }
101
102 free (my_pollfd);
103}
104#ifdef EXPORT_RPC_SYMBOLS
105libc_hidden_def (svc_run)
106#else
107libc_hidden_nolink_sunrpc (svc_run, GLIBC_2_0)
108#endif
109