| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 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 |