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#!/bin/sh
# Ensure that pwd works even when run from a very deep directory.
# Copyright (C) 2006 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# 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 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 Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
: ${PERL=perl}
$PERL -e 1 > /dev/null 2>&1 || {
echo 1>&2 "$0: configure didn't find a usable version of Perl," \
"so can't run this test"
exit 77
}
framework_failure=0
pwd=`"${BUILD_SRC_DIR?}"/pwd` || framework_failure=1
t0=`echo "$0"|sed 's,.*/,,'`.tmp; tmp=$t0/$$
trap 'status=$?; cd "$pwd" && chmod -R u+rwx $t0 && rm -rf $t0 && exit $status' 0
trap '(exit $?); exit $?' 1 2 13 15
mkdir -p $tmp || framework_failure=1
cd $tmp || framework_failure=1
if test $framework_failure = 1; then
echo "$0: failure in testing framework" 1>&2
(exit 1); exit 1
fi
ARGV_0=$0
export ARGV_0
CWD=$pwd/$tmp
export CWD
$PERL -Tw -- - <<\EOF
# Show that pwd works even when the length of the resulting
# directory name is longer than PATH_MAX.
use strict;
use Cwd;
(my $ME = $ENV{ARGV_0}) =~ s|.*/||;
# Set up a safe, well-known environment
delete @ENV{qw(BASH_ENV CDPATH ENV PATH)};
$ENV{IFS} = '';
my $cwd = $ENV{CWD};
my $z = 'z' x 31;
my $n = 256;
my $expected = $cwd . ("/$z" x $n);
my $i = 0;
do
{
mkdir $z, 0700
or die "$ME: at depth $i: $!\n";
chdir $z;
}
until (++$i == $n);
my $build_src_dir = $ENV{BUILD_SRC_DIR};
$build_src_dir
or die "$ME: envvar BUILD_SRC_DIR not defined\n";
if ($build_src_dir !~ m!^([-.:/\w]+)$!)
{
warn "$0: skipping this test; odd build source directory name:\n"
. "$build_src_dir\n";
exit 77;
}
$build_src_dir = $1;
my $pwd_binary = "$build_src_dir/pwd";
-x $pwd_binary
or die "$ME: $pwd_binary is not an executable file\n";
chomp (my $actual = `$pwd_binary`);
if ($expected ne $actual)
{
my $e_len = length $expected;
my $a_len = length $actual;
warn "expected len: $e_len\n";
warn "actual len: $a_len\n";
warn "expected: $expected\n";
warn "actual: $actual\n";
exit 1;
}
EOF
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