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annotate tests/sigpipe.c @ 5402:308d34e9f07d

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Changed bulk of GPLv2 or later files identified by script
author Mats Lidell <matsl@xemacs.org>
date Thu, 14 Oct 2010 17:15:20 +0200
parents 679041362cd4
children
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1 /* code is all from loser.c and loser.el by Mly
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2
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3 Copyright (C) 2002 Richard Mlynarik <mly@pobox.com>
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4
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679041362cd4 Add permissions notices to sigpipe.c and regressiontest.pl.
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5 This file is part of XEmacs.
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6
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7 XEmacs is free software: you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation, either version 3 of the License, or (at your
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10 option) any later version.
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
679041362cd4 Add permissions notices to sigpipe.c and regressiontest.pl.
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs. If not, see <http://www.gnu.org/licenses/>.
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19 Commentary:
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20
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21 Compile this file. Run it in the background giving it a command line
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22 argument PORT which is a positive integer 1024 < PORT < 32768 (avoid the
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23 numbers assigned in /etc/services).
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24
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25 Then start up a fresh (you're going to crash) XEmacs. Execute the following
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26
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27 (defun lose (port)
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28 (interactive "nUrk: ")
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29 (require 'comint)
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30 (while t
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31 (condition-case e
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32 (let* ((name "*lose*")
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33 (b (get-buffer-create name)))
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34 (switch-to-buffer b)
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35 (comint-mode)
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36 (comint-exec b name (cons "127.0.0.1" port) nil '())
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37 (process-send-string (get-buffer-process b) "\377\373\001")
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38 (process-send-string (get-buffer-process b) "\377\373\001"))
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39 (error (message "URK: %s" e)) (sit-for 1))))
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40
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41 Then M-x lose RET PORT RET and you lose big (in XEmacs 21.1, anyway).
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42 Note: the error messages are proper functioning. What should eventually
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43 happen after a number of SIGPIPEs is that you get a SIGSEGV and life is
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44 bad and XEmacs is dead.
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45 */
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46
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47 #include <arpa/inet.h>
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48
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49 int
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50 main (int argc, char **argv)
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51 {
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52 struct sockaddr_in junk;
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53 int s;
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54
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55 memset (&junk, 0, sizeof (junk));
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56
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57 junk.sin_family = AF_INET;
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58 junk.sin_addr.s_addr = htonl (INADDR_ANY); /* un*x sucks */
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59 junk.sin_port = htons (atoi (argv[1])); /* un*x blows */
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60
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61 s = socket (PF_INET, SOCK_STREAM, 0);
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62
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63 bind (s, (struct sockaddr *)&junk, sizeof (junk));
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64
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65 listen (s, 1);
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66
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67 for (;;)
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68 {
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69 int loser = accept (s, NULL, 0);
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70 close (loser);
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71 }
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72 }
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73