t/io/fs.t - metacpan.org

#!./perl

BEGIN {
    require "./test.pl";
}

use Config;
use File::Spec::Functions;

my $Is_MacOS  = ($^OS_NAME eq 'MacOS');
my $Is_VMSish = ($^OS_NAME eq 'VMS');

our ($wd, $newmode, $delta, $foo);

if (($^OS_NAME eq 'MSWin32') || ($^OS_NAME eq 'NetWare')) {
    $wd = `cd`;
}
elsif ($^OS_NAME eq 'VMS') {
    $wd = `show default`;
}
else {
    $wd = `pwd`;
}
chomp($wd);

my $has_link            = config_value('d_link');
my $accurate_timestamps =
    !($^OS_NAME eq 'MSWin32' || $^OS_NAME eq 'NetWare' ||
      $^OS_NAME eq 'dos'     || $^OS_NAME eq 'os2'     ||
      $^OS_NAME eq 'mint'    || $^OS_NAME eq 'cygwin'  ||
      $^OS_NAME eq 'amigaos' || $wd =~ m#$(config_value('afsroot'))/# ||
      $Is_MacOS
     );

if (defined &Win32::IsWinNT && Win32::IsWinNT()) {
    if (Win32::FsType() eq 'NTFS') {
        $has_link            = 1;
        $accurate_timestamps = 1;
    }
}

my $needs_fh_reopen =
    $^OS_NAME eq 'dos'
    # Not needed on HPFS, but needed on HPFS386 ?!
    || $^OS_NAME eq 'os2';

$needs_fh_reopen = 1 if (defined &Win32::IsWin95 && Win32::IsWin95());

my $skip_mode_checks =
    $^OS_NAME eq 'cygwin' && env::var('CYGWIN') !~ m/ntsec/;

plan tests => 51;


if (($^OS_NAME eq 'MSWin32') || ($^OS_NAME eq 'NetWare')) {
    `rmdir /s /q tmp 2>nul`;
    `mkdir tmp`;
}
elsif ($^OS_NAME eq 'VMS') {
    `if f\$search("[.tmp]*.*") .nes. "" then delete/nolog/noconfirm [.tmp]*.*.*`;
    `if f\$search("tmp.dir") .nes. "" then set file/prot=o:rwed tmp.dir;`;
    `if f\$search("tmp.dir") .nes. "" then delete/nolog/noconfirm tmp.dir;`;
    `create/directory [.tmp]`;
}
elsif ($Is_MacOS) {
    rmdir "tmp"; mkdir "tmp";
}
else {
    `rm -f tmp 2>/dev/null; mkdir tmp 2>/dev/null`;
}

chdir catdir(curdir(), 'tmp');

`/bin/rm -rf a b c x` if -x '/bin/rm';

umask(022);

SKIP: do {
    skip "bogus umask", 1 if ($^OS_NAME eq 'MSWin32') || ($^OS_NAME eq 'NetWare') || ($^OS_NAME eq 'epoc') || $Is_MacOS;

    is((umask(0)^&^0777), 022, 'umask'),
};

open(my $fh, ">",'x') || die "Can't create x";
close($fh);
open($fh, ">",'a') || die "Can't create a";
close($fh);

my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
    $blksize,$blocks,$a_mode);

SKIP: do {
    skip("no link", 4) unless $has_link;

    ok(link('a','b'), "link a b");
    ok(link('b','c'), "link b c");

    $a_mode = @(stat('a'))[2];

    @($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
     $blksize,$blocks) = @: stat('c');

    SKIP: do {
        skip "no nlink", 1 if config_value('dont_use_nlink');

        is($nlink, 3, "link count of triply-linked file");
    };

    SKIP: do {
        skip "hard links not that hard in $^OS_NAME", 1 if $^OS_NAME eq 'amigaos';
	skip "no mode checks", 1 if $skip_mode_checks;

#      if ($^O eq 'cygwin') { # new files on cygwin get rwx instead of rw-
#          is($mode & 0777, 0777, "mode of triply-linked file");
#      } else {
            is(sprintf('0%o', $mode ^&^ 0777), 
               sprintf('0%o', $a_mode ^&^ 0777), 
               "mode of triply-linked file");
#      }
    };
};

$newmode = (($^OS_NAME eq 'MSWin32') || ($^OS_NAME eq 'NetWare')) ?? 0444 !! 0777;

is(chmod($newmode,'a'), 1, "chmod succeeding");

SKIP: do {
    skip("no link", 7) unless $has_link;

    @($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
     $blksize,$blocks) = @: stat('c');

    SKIP: do {
	skip "no mode checks", 1 if $skip_mode_checks;

        is($mode ^&^ 0777, $newmode, "chmod going through");
    };

    $newmode = 0700;
    chmod 0444, 'x';
    $newmode = 0666;

    is(chmod($newmode,'c','x'), 2, "chmod two files");

    @($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
     $blksize,$blocks) = @: stat('c');

    SKIP: do {
	skip "no mode checks", 1 if $skip_mode_checks;

        is($mode ^&^ 0777, $newmode, "chmod going through to c");
    };

    @($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
     $blksize,$blocks) = @: stat('x');

    SKIP: do {
	skip "no mode checks", 1 if $skip_mode_checks;

        is($mode ^&^ 0777, $newmode, "chmod going through to x");
    };

    is(unlink('b','x'), 2, "unlink two files");

    @(?$dev,?$ino,?$mode,?$nlink,?$uid,?$gid,?$rdev,?$size,?$atime,?$mtime,?$ctime,
     ?$blksize,?$blocks) = @: stat('b');

    is($ino, undef, "ino of removed file b should be undef");

    @(?$dev,?$ino,?$mode,?$nlink,?$uid,?$gid,?$rdev,?$size,?$atime,?$mtime,?$ctime,
     ?$blksize,?$blocks) = @: stat('x');

    is($ino, undef, "ino of removed file x should be undef");
};

SKIP: do {
    skip "no fchmod", 5 unless (config_value('d_fchmod') || "") eq "define";
    ok(open(my $fh, "<", "a"), "open a");
    is(chmod(0, $fh), 1, "fchmod");
    $mode = @(stat "a")[2];
    SKIP: do {
        skip "no mode checks", 1 if $skip_mode_checks;
        is($mode ^&^ 0777, 0, "perm reset");
    };
    is(chmod($newmode, "a"), 1, "fchmod");
    $mode = @(stat $fh)[2];
    SKIP: do { 
        skip "no mode checks", 1 if $skip_mode_checks;
        is($mode ^&^ 0777, $newmode, "perm restored");
    };
};

SKIP: do {
    skip "no fchown", 1 unless (config_value('d_fchown') || "") eq "define";
    open(my $fh, "<", "a");
    is(chown(-1, -1, $fh), 1, "fchown");
};

SKIP: do {
    skip "has fchmod", 1 if (config_value('d_fchmod') || "") eq "define";
    open(my $fh, "<", "a");
    try { chmod(0777, $fh); };
    like($^EVAL_ERROR->{?description}, qr/^The fchmod function is unimplemented at/, "fchmod is unimplemented");
};

SKIP: do {
    skip "has fchown", 1 if (config_value('d_fchown') || "") eq "define";
    open(my $fh, "<", "a");
    try { chown(0, 0, $fh); };
    like($^EVAL_ERROR->{?description}, qr/^The f?chown function is unimplemented at/, "fchown is unimplemented");
};

is(rename('a','b'), 1, "rename a b");

@(?$dev,?$ino,?$mode,?$nlink,?$uid,?$gid,?$rdev,?$size,?$atime,?$mtime,?$ctime,
 ?$blksize,?$blocks) = @: stat('a');

is($ino, undef, "ino of renamed file a should be undef");

$delta = $accurate_timestamps ?? 1 !! 2;	# Granularity of time on the filesystem
chmod 0777, 'b';

$foo = (utime 500000000,500000000 + $delta,'b');
is($foo, 1, "utime");
check_utime_result();

utime undef, undef, 'b';
@($atime,$mtime) =  @(stat 'b')[[8..9]];
print $^STDOUT, "# utime undef, undef --> $atime, $mtime\n";
isnt($atime, 500000000, 'atime');
isnt($mtime, 500000000 + $delta, 'mtime');

SKIP: do {
    skip "no futimes", 4 unless (config_value('d_futimes') || "") eq "define";
    open(my $fh, "<", 'b');
    $foo = (utime 500000000,500000000 + $delta, $fh);
    is($foo, 1, "futime");
    check_utime_result();
};


sub check_utime_result {
    @($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
     $blksize,$blocks) = @: stat('b');

 SKIP: do {
	skip "bogus inode num", 1 if ($^OS_NAME eq 'MSWin32') || ($^OS_NAME eq 'NetWare');

	ok($ino,    'non-zero inode num');
    };

 SKIP: do {
	skip "filesystem atime/mtime granularity too low", 2
	    unless $accurate_timestamps;

	print $^STDOUT, "# atime - $atime  mtime - $mtime  delta - $delta\n";
	if($atime == 500000000 && $mtime == 500000000 + $delta) {
	    pass('atime');
	    pass('mtime');
	}
	else {
	    if ($^OS_NAME =~ m/\blinux\b/i) {
		print $^STDOUT, "# Maybe stat() cannot get the correct atime, ".
		    "as happens via NFS on linux?\n";
		$foo = (utime 400000000,500000000 + 2*$delta,'b');
		my @($new_atime, $new_mtime) =  @(stat('b'))[[8..9]];
		print $^STDOUT, "# newatime - $new_atime  nemtime - $new_mtime\n";
		if ($new_atime == $atime && $new_mtime - $mtime == $delta) {
		    pass("atime - accounted for possible NFS/glibc2.2 bug on linux");
		    pass("mtime - accounted for possible NFS/glibc2.2 bug on linux");
		}
		else {
		    fail("atime - $atime/$new_atime $mtime/$new_mtime");
		    fail("mtime - $atime/$new_atime $mtime/$new_mtime");
		}
	    }
	    elsif ($^OS_NAME eq 'VMS') {
		# why is this 1 second off?
		is( $atime, 500000001,          'atime' );
		is( $mtime, 500000000 + $delta, 'mtime' );
	    }
	    elsif ($^OS_NAME eq 'beos') {
            SKIP: do {
		    skip "atime not updated", 1;
		};
		is($mtime, 500000001, 'mtime');
	    }
	    else {
		fail("atime");
		fail("mtime");
	    }
	}
    };
}

SKIP: do {
    skip "has futimes", 1 if (config_value('d_futimes') || "") eq "define";
    open(my $fh, "<", "b") || die;
    try { utime(undef, undef, $fh); };
    like($^EVAL_ERROR->{?description}, qr/^The futimes function is unimplemented at/, "futimes is unimplemented");
};

is(unlink('b'), 1, "unlink b");

@(?$dev,?$ino,?$mode,?$nlink,?$uid,?$gid,?$rdev,?$size,?$atime,?$mtime,?$ctime,
    ?$blksize,?$blocks) = @: stat('b');
is($ino, undef, "ino of unlinked file b should be undef");
unlink 'c';

chdir $wd || die "Can't cd back to $wd";

# Yet another way to look for links (perhaps those that cannot be
# created by perl?).  Hopefully there is an ls utility in your
# %PATH%. N.B. that $^O is 'cygwin' on Cygwin.

SKIP: do {
    skip "Win32/Netware specific test", 2
      unless ($^OS_NAME eq 'MSWin32') || ($^OS_NAME eq 'NetWare');
    skip "No symbolic links found to test with", 2
      unless  `ls -l perl 2>nul` =~ m/^l.*->/;

    system("cp TEST TEST$^PID");
    # we have to copy because e.g. GNU grep gets huffy if we have
    # a symlink forest to another disk (it complains about too many
    # levels of symbolic links, even if we have only two)
    is(symlink("TEST$^PID","c"), 1, "symlink");
    $foo = `grep perl c 2>&1`;
    ok($foo, "found perl in c");
    unlink 'c';
    unlink("TEST$^PID");
};

unlink "Iofs.tmp";
open my $iofscom, ">", "Iofs.tmp" or die "Could not write IOfs.tmp: $^OS_ERROR";
print $iofscom, 'helloworld';
close($iofscom);

# TODO: pp_truncate needs to be taught about F_CHSIZE and F_FREESP,
# as per UNIX FAQ.

SKIP: do {
# Check truncating a closed file.
    try { truncate "Iofs.tmp", 5; };

    skip("no truncate - $^EVAL_ERROR", 8) if $^EVAL_ERROR;

    is(-s "Iofs.tmp", 5, "truncation to five bytes");

    truncate "Iofs.tmp", 0;

    ok(-z "Iofs.tmp",    "truncation to zero bytes");

#these steps are necessary to check if file is really truncated
#On Win95, $fh is updated, but file properties aren't
    open($fh, ">", "Iofs.tmp") or die "Can't create Iofs.tmp";
    print $fh, "x\n" x 200;
    close $fh;

# Check truncating an open file.
    open($fh, ">>", "Iofs.tmp") or die "Can't open Iofs.tmp for appending";

    binmode $fh;
    iohandle::output_autoflush($fh, 1);

    do {
	print $fh, "x\n" x 200;
	ok(truncate($fh, 200), "fh resize to 200");
    };

    if ($needs_fh_reopen) {
	close ($fh); open ($fh, ">>", "Iofs.tmp") or die "Can't reopen Iofs.tmp";
    }

    SKIP: do {
        if ($^OS_NAME eq 'vos') {
	    skip ("# TODO - hit VOS bug posix-973 - cannot resize an open file below the current file pos.", 5);
	}

	is(-s "Iofs.tmp", 200, "fh resize to 200 working (filename check)");

	ok(truncate($fh, 0), "fh resize to zero");

	if ($needs_fh_reopen) {
	    close ($fh); open ($fh, ">>", "Iofs.tmp") or die "Can't reopen Iofs.tmp";
	}

	ok(-z "Iofs.tmp", "fh resize to zero working (filename check)");

	close $fh;

	open($fh, ">>", "Iofs.tmp") or die "Can't open Iofs.tmp for appending";

	binmode $fh;
	iohandle::output_autoflush($fh, 1);

	do {
	    print $fh, "x\n" x 200;
	    ok(truncate($fh, 100), "fh resize by IO slot");
	};

	if ($needs_fh_reopen) {
	    close ($fh); open ($fh, ">>", "Iofs.tmp") or die "Can't reopen Iofs.tmp";
	}

	is(-s "Iofs.tmp", 100, "fh resize by IO slot working");

	close $fh;
    };
};

# check if rename() can be used to just change case of filename
SKIP: do {
    skip "Works in Cygwin only if check_case is set to relaxed", 1
      if (env::var('CYGWIN') && (env::var('CYGWIN') =~ m/check_case:(?:adjust|strict)/));

    chdir './tmp';
    open($fh, ">",'x') || die "Can't create x";
    close($fh);
    rename('x', 'X');

    # this works on win32 only, because fs isn't casesensitive
    ok(-e 'X', "rename working");

    1 while unlink 'X';
    chdir $wd || die "Can't cd back to $wd";
};

# check if rename() works on directories
if ($^OS_NAME eq 'VMS') {
    # must have delete access to rename a directory
    `set file tmp.dir/protection=o:d`;
    ok(rename('tmp.dir', 'tmp1.dir'), "rename on directories") ||
      print $^STDOUT, "# errno: $^OS_ERROR\n";
}
else {
    ok(rename('tmp', 'tmp1'), "rename on directories");
}

ok(-d 'tmp1', "rename on directories working");

do {
    # Change 26011: Re: A surprising segfault
    # to make sure only that these obfuscated sentences will not crash.

    map { chmod() }, @( ('')x68);
    ok(1, "extend sp in pp_chmod");

    map { chown() }, @( ('')x68);
    ok(1, "extend sp in pp_chown");
};

# need to remove 'tmp' if rename() in test 28 failed!
END { rmdir 'tmp1'; rmdir 'tmp'; 1 while unlink "Iofs.tmp"; }
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