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# -*- cperl -*-
# Copyright (c) 2008, 2025, Oracle and/or its affiliates.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2.0,
# as published by the Free Software Foundation.
#
# This program is designed to work with certain software (including
# but not limited to OpenSSL) that is licensed under separate terms,
# as designated in a particular file or component or in included license
# documentation. The authors of MySQL hereby grant you an additional
# permission to link the program and your derivative works with the
# separately licensed software that they have either included with
# the program or referenced in the documentation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License, version 2.0, for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
package My::Platform;
use strict;
use File::Basename;
use File::Path;
use File::Temp qw /tempdir/;
use base qw(Exporter);
our @EXPORT = qw(IS_CYGWIN IS_MAC IS_WINDOWS IS_WIN32PERL
check_socket_path_length mixed_path native_path
posix_path process_alive);
BEGIN {
if ($^O eq "cygwin") {
# Make sure cygpath works
if ((system("cygpath > /dev/null 2>&1") >> 8) != 1) {
die "Could not execute 'cygpath': $!";
}
eval 'sub IS_CYGWIN { 1 }';
} else {
eval 'sub IS_CYGWIN { 0 }';
}
if ($^O eq "MSWin32") {
eval 'sub IS_WIN32PERL { 1 }';
} else {
eval 'sub IS_WIN32PERL { 0 }';
}
}
BEGIN {
if (IS_CYGWIN or IS_WIN32PERL) {
eval 'sub IS_WINDOWS { 1 }';
} else {
eval 'sub IS_WINDOWS { 0 }';
}
}
BEGIN {
if ($^O eq "darwin") {
eval 'sub IS_MAC { 1 }';
} else {
eval 'sub IS_MAC { 0 }';
}
}
# Convert from path format used by perl to the underlying
# operating systems format.
#
# NOTE
# Used when running windows binaries (that expect windows paths)
# in cygwin perl (that uses unix paths).
use Memoize;
if (!IS_WIN32PERL) {
memoize('mixed_path');
memoize('native_path');
memoize('posix_path');
}
sub mixed_path {
my ($path) = @_;
if (IS_CYGWIN) {
return unless defined $path;
my $cmd = "cygpath -m $path";
$path = `$cmd` or
print "Failed to run: '$cmd', $!\n";
chomp $path;
}
return $path;
}
sub native_path {
my ($path) = @_;
$path =~ s/\//\\/g
if (IS_CYGWIN or IS_WIN32PERL);
return $path;
}
sub posix_path {
my ($path) = @_;
if (IS_CYGWIN) {
return unless defined $path;
$path = `cygpath $path`;
chomp $path;
}
return $path;
}
sub check_socket_path_length {
my ($path, $parallel, $tmpdir_path_updated) = @_;
return 0 if IS_WINDOWS;
# See Debian bug #651002
return 0 if ($^O eq 'gnu');
# See Debian bug #670722 - failing on kFreeBSD even after setting short path
return 0 if length $path < 40;
require IO::Socket::UNIX;
my $truncated = undef;
# Append extra chars if --parallel because $opt_tmpdir will be longer
if (! $tmpdir_path_updated) {
if ($parallel > 9 || $parallel eq "auto") {
$path = $path . "xxx";
} elsif ($parallel > 1) {
$path = $path . "xx";
}
}
# Create a tempfile name with same length as "path"
my $tmpdir = tempdir(CLEANUP => 0);
my $len = length($path) - length($tmpdir) - 1;
my $testfile = $tmpdir . "/" . "x" x ($len > 0 ? $len : 1);
my $sock;
eval {
$sock = new IO::Socket::UNIX(Local => $testfile,
Listen => 1,);
# Be negative
$truncated = 1;
die "Could not create UNIX domain socket: $!"
unless defined $sock;
die "UNIX domain socket path was truncated"
unless ($testfile eq $sock->hostpath());
$truncated = 0; # Yes, it worked!
};
die "Unexpected failure when checking socket path length: $@"
if $@ and
not defined $truncated;
# Close the socket
$sock = undef;
# Remove the tempdir and any socket file created
rmtree($tmpdir);
return $truncated;
}
sub process_alive {
my ($pid) = @_;
die "usage: process_alive(pid)" unless $pid;
return kill(0, $pid) unless IS_WINDOWS;
my @list = split(/,/, `tasklist /FI "PID eq $pid" /NH /FO CSV`);
my $ret_pid = eval($list[1]);
return ($ret_pid == $pid);
}
1;
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