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#!/bin/sh
# -*- perl -*-
# Ensure that rm gives the expected diagnostic when failing to remove a file
# owned by some other user in a directory with theh stick bit set.
: ${PERL=perl}
: ${srcdir=.}
case "$PERL" in
*'missing perl') #'
echo 1>&2 \
"$0: configure didn't find a usable version of Perl, so can't run this test"
exit 77
;;
esac
ARGV_0=$0 exec $PERL -w -- - << \EOP
require 5.003;
use strict;
(my $ME = $ENV{ARGV_0}) =~ s|.*/||;
$ENV{VERBOSE} && $ENV{VERBOSE} eq 'yes'
and system qw (rm --version);
# Ensure that the diagnostics are in English.
$ENV{LC_ALL} = 'C';
# Ensure that the effective UID is not 0.
if ($> == 0)
{
warn "$ME: you may not run this test as root; skipping it.\n";
exit 77;
}
my @dir_list = qw(/tmp /var/tmp /usr/tmp);
# Find a directory with the sticky bit set.
my $found_dir;
my $found_file;
foreach my $dir (@dir_list)
{
if (-d $dir && -k _ && -r _ && -w _ && -x _)
{
$found_dir = 1;
# Find a non-directory there that's owned by someone else.
opendir DIR_HANDLE, $dir
or die "$ME: couldn't open $dir: $!\n";
foreach my $f (readdir DIR_HANDLE)
{
# Skip files owned by self, and symlinks.
# It's not technically necessary to skip symlinks, but it's simpler.
-l $f || -o _
and next;
$found_file = 1;
# Invoke rm on this file and ensure that we get the
# expected exit code and diagnostic.
my $target_file = "$dir/$f";
my $cmd = "rm -f $target_file";
open RM, "$cmd 2>&1 |"
or die "$ME: cannot execute `$cmd'\n";
my $line = <RM>;
close RM;
my $status = $? >> 8;
$status == 1
or die "$ME: unexpected exit status from `$cmd';\n"
. " got $status, expected 1\n";
my $exp = "rm: cannot remove `$dir/$f': Operation not permitted\n";
$line eq $exp
or die "$ME: unexpected dignostic from `$cmd';\n"
. " got $line expected $exp";
last;
}
closedir DIR_HANDLE;
$found_file
and last;
}
}
if ( ! $found_dir)
{
warn "$ME: couldn't find a directory with the sticky bit set;"
. " skipping this test\n";
exit 77;
}
if ( ! $found_file)
{
warn "$ME: couldn't find a file not owned by you\n"
. " in any of the following directories:\n @dir_list\n"
. "...so, skipping this test\n";
exit 77;
}
EOP
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