-# NOTE: this file tests how large files (>2GB) work with perlio (stdio/sfio).
+# NOTE: this file tests how large files (>2GB) work with perlio (or stdio).
# sysopen(), sysseek(), syswrite(), sysread() are tested in t/lib/syslfs.t.
-# If you modify/add tests here, remember to update also t/lib/syslfs.t.
+# If you modify/add tests here, remember to update also ext/Fcntl/t/syslfs.t.
BEGIN {
chdir 't' if -d 't';
- unshift @INC, '../lib';
+ require './test.pl';
+ set_up_inc('../lib');
+ require Config;
# Don't bother if there are no quad offsets.
- require Config; import Config;
- if ($Config{lseeksize} < 8) {
- print "1..0\n# no 64-bit file offsets\n";
- exit(0);
- }
+ skip_all('no 64-bit file offsets')
+ if $Config::Config{lseeksize} < 8;
}
-sub bye {
- close(BIG);
- unlink "big";
- exit(0);
-}
+use strict;
+
+our @s;
+
+my $big0 = tempfile();
+my $big1 = tempfile();
+my $big2 = tempfile();
+
+my $explained;
sub explain {
- print <<EOM;
+ unless ($explained++) {
+ print <<EOM;
#
-# If the lfs (large file support: large meaning larger than two gigabytes)
-# tests are skipped or fail, it may mean either that your process
-# (or process group) is not allowed to write large files (resource
-# limits) or that the file system you are running the tests on doesn't
-# let your user/group have large files (quota) or the filesystem simply
-# doesn't support large files. You may even need to reconfigure your kernel.
-# (This is all very operating system and site-dependent.)
+# If the lfs (large file support: large meaning larger than two
+# gigabytes) tests are skipped or fail, it may mean either that your
+# process (or process group) is not allowed to write large files
+# (resource limits) or that the file system (the network filesystem?)
+# you are running the tests on doesn't let your user/group have large
+# files (quota) or the filesystem simply doesn't support large files.
+# You may even need to reconfigure your kernel. (This is all very
+# operating system and site-dependent.)
#
# Perl may still be able to support large files, once you have
# such a process, enough quota, and such a (file) system.
+# It is just that the test failed now.
#
EOM
+ }
+ if (@_) {
+ skip_all(@_);
+ }
}
+$| = 1;
+
print "# checking whether we have sparse files...\n";
# Known have-nots.
-if ($^O eq 'win32' || $^O eq 'vms') {
- print "1..0\n# no sparse files (because this is $^O) \n";
- bye();
+if ($^O eq 'MSWin32' || $^O eq 'NetWare' || $^O eq 'VMS') {
+ skip_all("no sparse files in $^O");
}
# Known haves that have problems running this test
# (for example because they do not support sparse files, like UNICOS)
if ($^O eq 'unicos') {
- print "1..0\n# large files known to work but unable to test them here ($^O)\n";
- bye();
+ skip_all("no sparse files in $^O, unable to test large files");
}
-# Then try to heuristically deduce whether we have sparse files.
+# Then try heuristically to deduce whether we have sparse files.
# Let's not depend on Fcntl or any other extension.
-my ($SEEK_SET, $SEEK_CUR, $SEEK_END) = (0, 1, 2);
+sub SEEK_SET () {0}
+sub SEEK_CUR () {1}
+sub SEEK_END () {2}
# We'll start off by creating a one megabyte file which has
# only three "true" bytes. If we have sparseness, we should
# consume less blocks than one megabyte (assuming nobody has
# one megabyte blocks...)
-open(BIG, ">big") or do { warn "open failed: $!\n"; bye };
-binmode BIG;
-seek(BIG, 1_000_000, $SEEK_SET);
-print BIG "big";
-close(BIG);
-
-my @s;
-
-@s = stat("big");
-
-print "# @s\n";
-
-my $BLOCKSIZE = $s[11] || 512;
-
-unless (@s == 13 &&
- $s[7] == 1_000_003 &&
- defined $s[12] &&
- $BLOCKSIZE * $s[12] < 1_000_003) {
- print "1..0\n# no sparse files?\n";
- bye();
+open(BIG, ">$big1") or
+ die "open $big1 failed: $!";
+binmode(BIG) or
+ die "binmode $big1 failed: $!";
+seek(BIG, 1_000_000, SEEK_SET) or
+ die "seek $big1 failed: $!";
+print BIG "big" or
+ die "print $big1 failed: $!";
+close(BIG) or
+ die "close $big1 failed: $!";
+
+my @s1 = stat($big1);
+
+print "# s1 = @s1\n";
+
+open(BIG, ">$big2") or
+ die "open $big2 failed: $!";
+binmode(BIG) or
+ die "binmode $big2 failed: $!";
+seek(BIG, 2_000_000, SEEK_SET) or
+ die "seek $big2 failed: $!";
+print BIG "big" or
+ die "print $big2 failed: $!";
+close(BIG) or
+ die "close $big2 failed: $!";
+
+my @s2 = stat($big2);
+
+print "# s2 = @s2\n";
+
+unless ($s1[7] == 1_000_003 && $s2[7] == 2_000_003 &&
+ $s1[11] == $s2[11] && $s1[12] == $s2[12] &&
+ $s1[12] > 0) {
+ skip_all("no sparse files?");
}
print "# we seem to have sparse files...\n";
# By now we better be sure that we do have sparse files:
# if we are not, the following will hog 5 gigabytes of disk. Ooops.
+# This may fail by producing some signal; run in a subprocess first for safety
$ENV{LC_ALL} = "C";
-open(BIG, ">big") or do { warn "open failed: $!\n"; bye };
+my $r = system '../perl', '-e', <<"EOF";
+open my \$big, '>', q{$big0} or die qq{open $big0: $!};
+seek \$big, 5_000_000_000, 0 or die qq{seek $big0: $!};
+print \$big "big" or die qq{print $big0: $!};
+close \$big or die qq{close $big0: $!};
+exit 0;
+EOF
+
+open(BIG, ">$big0") or die "open failed: $!";
binmode BIG;
-unless (seek(BIG, 5_000_000_000, $SEEK_SET)) {
- print "1..0\n# seeking past 2GB failed: $!\n";
- explain();
- bye();
+if ($r or not seek(BIG, 5_000_000_000, SEEK_SET)) {
+ my $err = $r ? 'signal '.($r & 0x7f) : $!;
+ explain("seeking past 2GB failed: $err");
}
# Either the print or (more likely, thanks to buffering) the close will
-# fail if there are are filesize limitations (process or fs).
+# fail if there are filesize limitations (process or fs).
my $print = print BIG "big";
print "# print failed: $!\n" unless $print;
my $close = close BIG;
print "# close failed: $!\n" unless $close;
unless ($print && $close) {
if ($! =~/too large/i) {
- print "1..0\n# writing past 2GB failed: process limits?\n";
+ explain("writing past 2GB failed: process limits?");
} elsif ($! =~ /quota/i) {
- print "1..0\n# filesystem quota limits?\n";
+ explain("filesystem quota limits?");
+ } else {
+ explain("error: $!");
}
- explain();
- bye();
}
-@s = stat("big");
+@s = stat($big0);
print "# @s\n";
unless ($s[7] == 5_000_000_003) {
- print "1..0\n# not configured to use large files?\n";
- explain();
- bye();
+ explain("kernel/fs not configured to use large files?");
}
-sub fail () {
- print "not ";
- $fail++;
+sub offset ($$) {
+ local $::Level = $::Level + 1;
+ my ($offset_will_be, $offset_want) = @_;
+ my $offset_is = eval $offset_will_be;
+ unless ($offset_is == $offset_want) {
+ print "# bad offset $offset_is, want $offset_want\n";
+ my ($offset_func) = ($offset_will_be =~ /^(\w+)/);
+ if (unpack("L", pack("L", $offset_want)) == $offset_is) {
+ print "# 32-bit wraparound suspected in $offset_func() since\n";
+ print "# $offset_want cast into 32 bits equals $offset_is.\n";
+ } elsif ($offset_want - unpack("L", pack("L", $offset_want)) - 1
+ == $offset_is) {
+ print "# 32-bit wraparound suspected in $offset_func() since\n";
+ printf "# %s - unpack('L', pack('L', %s)) - 1 equals %s.\n",
+ $offset_want,
+ $offset_want,
+ $offset_is;
+ }
+ fail($offset_will_be);
+ } else {
+ pass($offset_will_be);
+ }
}
-print "1..17\n";
+plan(tests => 17);
-my $fail = 0;
+is($s[7], 5_000_000_003, 'exercises pp_stat');
+is(-s $big0, 5_000_000_003, 'exercises pp_ftsize');
-fail unless $s[7] == 5_000_000_003; # exercizes pp_stat
-print "ok 1\n";
+is(-e $big0, 1);
+is(-f $big0, 1);
-fail unless -s "big" == 5_000_000_003; # exercizes pp_ftsize
-print "ok 2\n";
-
-fail unless -e "big";
-print "ok 3\n";
-
-fail unless -f "big";
-print "ok 4\n";
-
-open(BIG, "big") or do { warn "open failed: $!\n"; bye };
+open(BIG, $big0) or die "open failed: $!";
binmode BIG;
-fail unless seek(BIG, 4_500_000_000, $SEEK_SET);
-print "ok 5\n";
+isnt(seek(BIG, 4_500_000_000, SEEK_SET), undef);
-fail unless tell(BIG) == 4_500_000_000;
-print "ok 6\n";
+offset('tell(BIG)', 4_500_000_000);
-fail unless seek(BIG, 1, $SEEK_CUR);
-print "ok 7\n";
+isnt(seek(BIG, 1, SEEK_CUR), undef);
-fail unless tell(BIG) == 4_500_000_001;
-print "ok 8\n";
+# If you get 205_032_705 from here it means that
+# your tell() is returning 32-bit values since (I32)4_500_000_001
+# is exactly 205_032_705.
+offset('tell(BIG)', 4_500_000_001);
-fail unless seek(BIG, -1, $SEEK_CUR);
-print "ok 9\n";
+isnt(seek(BIG, -1, SEEK_CUR), undef);
-fail unless tell(BIG) == 4_500_000_000;
-print "ok 10\n";
+offset('tell(BIG)', 4_500_000_000);
-fail unless seek(BIG, -3, $SEEK_END);
-print "ok 11\n";
+isnt(seek(BIG, -3, SEEK_END), undef);
-fail unless tell(BIG) == 5_000_000_000;
-print "ok 12\n";
+offset('tell(BIG)', 5_000_000_000);
my $big;
-fail unless read(BIG, $big, 3) == 3;
-print "ok 13\n";
+is(read(BIG, $big, 3), 3);
-fail unless $big eq "big";
-print "ok 14\n";
+is($big, "big");
# 705_032_704 = (I32)5_000_000_000
-fail unless seek(BIG, 705_032_704, $SEEK_SET);
-print "ok 15\n";
+# See that we don't have "big" in the 705_... spot:
+# that would mean that we have a wraparound.
+isnt(seek(BIG, 705_032_704, SEEK_SET), undef);
my $zero;
-fail unless read(BIG, $zero, 3) == 3;
-print "ok 16\n";
+is(read(BIG, $zero, 3), 3);
-fail unless $zero eq "\0\0\0";
-print "ok 17\n";
+is($zero, "\0\0\0");
-explain if $fail;
-
-bye(); # does the necessary cleanup
+explain() unless $::Tests_Are_Passing;
END {
- unlink "big"; # be paranoid about leaving 5 gig files lying around
+ # unlink may fail if applied directly to a large file
+ # be paranoid about leaving 5 gig files lying around
+ open(BIG, ">$big0"); # truncate
+ close(BIG);
}
# eof
https://perl5.git.perl.org / perl5.git / blobdiff