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. */ |
42 | void |
43 | svc_exit (void) |
44 | { |
45 | free (svc_pollfd); |
46 | svc_pollfd = NULL; |
47 | svc_max_pollfd = 0; |
48 | } |
49 | libc_hidden_nolink_sunrpc (svc_exit, GLIBC_2_0) |
50 | |
51 | void |
52 | svc_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 |
105 | libc_hidden_def (svc_run) |
106 | #else |
107 | libc_hidden_nolink_sunrpc (svc_run, GLIBC_2_0) |
108 | #endif |
109 | |