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 |
44 | svc_exit (void) |
45 | { |
46 | free (svc_pollfd); |
47 | svc_pollfd = NULL; |
48 | svc_max_pollfd = 0; |
49 | } |
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 | |