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https://github.com/libguestfs/libguestfs.git
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70 lines
2.1 KiB
Perl
Executable File
70 lines
2.1 KiB
Perl
Executable File
#!/usr/bin/env perl
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# Copyright (C) 2010-2020 Red Hat Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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# Test that 2 simultaneous launches in a clean cache directory will both succeed
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use strict;
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use warnings;
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use File::Temp qw(tempdir);
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use POSIX;
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use Sys::Guestfs;
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# Allow this test to be skipped.
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exit 77 if $ENV{SKIP_TEST_LAUNCH_RACE_PL};
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# Use a temporary TMPDIR to ensure it's clean
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my $tmpdir = tempdir (CLEANUP => 1);
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$ENV{TMPDIR} = $tmpdir;
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# Unset LIBGUESTFS_CACHEDIR (set by ./run) since that will override TMPDIR.
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delete $ENV{LIBGUESTFS_CACHEDIR};
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my $pid = fork();
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die ("fork failed: $!") if ($pid < 0);
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if ($pid == 0) {
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my $g = Sys::Guestfs->new ();
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$g->add_drive ("/dev/null");
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$g->launch ();
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$g->close ();
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# So $tmpdir is not removed by CLEANUP => 1 above.
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_exit (0);
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}
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my $g = Sys::Guestfs->new ();
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$g->add_drive ("/dev/null");
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$g->launch ();
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$g = undef;
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waitpid ($pid, 0) or die ("waitpid: $!");
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die ("child failed") unless ($? == 0);
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# Check that only 1 temporary cache directory was created.
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#
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# No cache directory is OK too (as long as the appliance launched w/o
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# failure) because it indicates we're not using supermin.
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my $dh;
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opendir ($dh, $tmpdir) or die ("Failed to open $tmpdir: $!");
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my @cachedirs = grep { /^guestfs\./ } readdir ($dh);
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closedir ($dh) or die ("Failed to close $tmpdir: $!");
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my $ncachedirs = scalar(@cachedirs);
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die "Expected 0 or 1 cachedir, found $ncachedirs"
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unless $ncachedirs == 0 || $ncachedirs == 1;
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