tests/opr/softsig-t

   1 #!/usr/bin/perl
   2 #
   3 # Copyright (c) 2010 Your File System Inc. All rights reserved.
   4 #
   5 # Redistribution and use in source and binary forms, with or without
   6 # modification, are permitted provided that the following conditions
   7 # are met:
   8 # 1. Redistributions of source code must retain the above copyright
   9 #    notice, this list of conditions and the following disclaimer.
  10 # 2. Redistributions in binary form must reproduce the above copyright
  11 #    notice, this list of conditions and the following disclaimer in the
  12 #    documentation and/or other materials provided with the distribution.
  13 #
  14 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
  15 # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  16 # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  17 # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  18 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  19 # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  20 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  21 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  23 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24
  25 use strict;
  26 use warnings;
  27 use Test::More tests => 11;
  28 use IO::File;
  29 use POSIX qw(:signal_h);
  30 use File::Temp;
  31 use FindBin qw($Bin);
  32
  33 # Start up our test process, and send it various signals. Check that these
  34 # signals make it to it correctly, and are reported on the command line.
  35 my $softsig_helper = $Bin . "/softsig-helper";
  36
  37 # This -dummy argument prevents Perl from putting an intermediate sh
  38 # -c between us and softsig-helper in the case where the build
  39 # directory happens to contain shell metacharacters, like the ~ in
  40 # /build/openafs-vb8tid/openafs-1.8.0~pre1 used by the Debian
  41 # builders.
  42 my $pid = open(HELPER, "-|", $softsig_helper, "-dummy")
  43   or die "Couldn't start test helper.";
  44
  45 # Wait for softsig to start up.
  46 is(<HELPER>, "Ready\n");
  47
  48 # Check that a load of common signals are correctly trapped.
  49
  50 kill 'INT', $pid;
  51 is(<HELPER>, "Received INT\n");
  52
  53 kill 'HUP', $pid;
  54 is(<HELPER>, "Received HUP\n");
  55
  56 kill 'QUIT', $pid;
  57 is(<HELPER>, "Received QUIT\n");
  58
  59 kill 'ALRM', $pid;
  60 is(<HELPER>, "Received ALRM\n");
  61
  62 kill 'TERM', $pid;
  63 is(<HELPER>, "Received TERM\n");
  64
  65 kill 'USR1', $pid;
  66 is(<HELPER>, "Received USR1\n");
  67
  68 kill 'USR2', $pid;
  69 is(<HELPER>, "Received USR2\n");
  70
  71
  72 # Check that we can actually stop the process with a kill.
  73
  74 kill 'KILL', $pid;
  75 close(HELPER);
  76 is($?, SIGKILL, "Helper exited on KILL signal.");
  77
  78 # Check that an internal segmentation fault kills the process.
  79
  80 $pid = open(HELPER, "-|", $softsig_helper, "-crash")
  81     or die "Couldn't start test helper.";
  82 close(HELPER);
  83 is($? & 0x7f, SIGSEGV, "Helper exited on SEGV signal.");
  84
  85 # Check that an internal bus error kills the process.
  86 # Skip this test when running on ancient versions of Perl
  87 # which do not have SIGBUS defined.
  88 SKIP: {
  89     my $sigbus = eval "SIGBUS";
  90     skip("Skipping buserror test; SIGBUS constant is not defined.", 1) unless $sigbus;
  91
  92     my ($fh, $path) = mkstemp("/tmp/softsig-t_XXXXXX");
  93     $pid = open(HELPER, "-|", $softsig_helper, "-buserror", $path)
  94         or die "Couldn't start test helper.";
  95     close(HELPER);
  96     is($? & 0x7f, $sigbus, "Helper exited on BUS signal.");
  97     $fh->close;
  98     unlink $path;
  99 }