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 #include <shlib-compat.h>
40
41 /* This function can be used as a signal handler to terminate the
42 server loop. */
43 void
svc_exit(void)44 svc_exit (void)
45 {
46 free (svc_pollfd);
47 svc_pollfd = NULL;
48 svc_max_pollfd = 0;
49 }
libc_hidden_nolink_sunrpc(svc_exit,GLIBC_2_0)50 libc_hidden_nolink_sunrpc (svc_exit, GLIBC_2_0)
51
52 void
53 svc_run (void)
54 {
55 int i;
56 struct pollfd *my_pollfd = NULL;
57 int last_max_pollfd = 0;
58
59 for (;;)
60 {
61 int max_pollfd = svc_max_pollfd;
62 if (max_pollfd == 0 && svc_pollfd == NULL)
63 break;
64
65 if (last_max_pollfd != max_pollfd)
66 {
67 struct pollfd *new_pollfd
68 = realloc (my_pollfd, sizeof (struct pollfd) * max_pollfd);
69
70 if (new_pollfd == NULL)
71 {
72 perror (_("svc_run: - out of memory"));
73 break;
74 }
75
76 my_pollfd = new_pollfd;
77 last_max_pollfd = max_pollfd;
78 }
79
80 for (i = 0; i < max_pollfd; ++i)
81 {
82 my_pollfd[i].fd = svc_pollfd[i].fd;
83 my_pollfd[i].events = svc_pollfd[i].events;
84 my_pollfd[i].revents = 0;
85 }
86
87 switch (i = __poll (my_pollfd, max_pollfd, -1))
88 {
89 case -1:
90 if (errno == EINTR)
91 continue;
92 perror (_("svc_run: - poll failed"));
93 break;
94 case 0:
95 continue;
96 default:
97 svc_getreq_poll (my_pollfd, i);
98 continue;
99 }
100 break;
101 }
102
103 free (my_pollfd);
104 }
105 #ifdef EXPORT_RPC_SYMBOLS
106 libc_hidden_def (svc_run)
107 #else
108 libc_hidden_nolink_sunrpc (svc_run, GLIBC_2_0)
109 #endif
110