# If you modify/add tests here, remember to update also t/op/lfs.t.
BEGIN {
- # Don't bother if there are no quads.
- eval { my $q = pack "q", 0 };
- if ($@) {
- print "1..0\n# no 64-bit types\n";
- exit(0);
- }
chdir 't' if -d 't';
unshift @INC, '../lib';
require Config; import Config;
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 is not
-# allowed to write large files or that the file system you are running
-# the tests on doesn't support large files, or both. You may also need
-# to reconfigure your kernel. (This is all very system-dependent.)
+# 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.)
#
# Perl may still be able to support large files, once you have
-# such a process and such a (file) system.
+# such a process, enough quota, and such a (file) system.
#
EOM
}
+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\n";
+ print "1..0\n# no sparse files (because this is $^O) \n";
bye();
}
-# Then try to deduce whether we have sparse files.
+# Known haves that have problems running this test
+# (for example because they do not support sparse files, like UNICOS)
+if ($^O eq 'unicos') {
+ print "1..0\n# large files known to work but unable to test them here ($^O)\n";
+ bye();
+}
+
+# Then try heuristically to deduce whether we have sparse files.
# We'll start off by creating a one megabyte file which has
# only three "true" bytes. If we have sparseness, we should
print "# @s\n";
-my $BLOCKSIZE = 512; # is this really correct everywhere?
+my $BLOCKSIZE = $s[11] || 512;
unless (@s == 13 &&
$s[7] == 1_000_003 &&
bye();
}
+print "# we seem to have sparse files...\n";
+
# By now we better be sure that we do have sparse files:
# if we are not, the following will hog 5 gigabytes of disk. Ooops.
+$ENV{LC_ALL} = "C";
+
sysopen(BIG, "big", O_WRONLY|O_CREAT|O_TRUNC) or
- do { warn "sysopen failed: $!\n"; bye };
-sysseek(BIG, 5_000_000_000, SEEK_SET);
+ do { warn "sysopen 'big' failed: $!\n"; bye };
+my $sysseek = sysseek(BIG, 5_000_000_000, SEEK_SET);
+unless (defined $sysseek && $sysseek == 5_000_000_000) {
+ print "1..0\n# seeking past 2GB failed: $! (sysseek returned ",
+ defined $sysseek ? $sysseek : 'undef', ")\n";
+ explain();
+ bye();
+}
+
# The syswrite will fail if there are are filesize limitations (process or fs).
-unless(syswrite(BIG, "big") == 3) {
- $ENV{LC_ALL} = "C";
- if ($! =~/File too large/) {
- print "1..0\n# writing past 2GB failed\n";
- explain();
- bye();
+my $syswrite = syswrite(BIG, "big");
+print "# syswrite failed: $! (syswrite returned ",
+ defined $syswrite ? $syswrite : 'undef', ")\n"
+ unless defined $syswrite && $syswrite == 3;
+my $close = close BIG;
+print "# close failed: $!\n" unless $close;
+unless($syswrite && $close) {
+ if ($! =~/too large/i) {
+ print "1..0\n# writing past 2GB failed: process limits?\n";
+ } elsif ($! =~ /quota/i) {
+ print "1..0\n# filesystem quota limits?\n";
}
+ explain();
+ bye();
}
-close BIG;
@s = stat("big");
print "# @s\n";
+unless ($s[7] == 5_000_000_003) {
+ print "1..0\n# not configured to use large files?\n";
+ explain();
+ bye();
+}
+
sub fail () {
print "not ";
$fail++;
}
-print "1..8\n";
+print "1..17\n";
my $fail = 0;
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";
+
sysopen(BIG, "big", O_RDONLY) or do { warn "sysopen failed: $!\n"; bye };
-sysseek(BIG, 4_500_000_000, SEEK_SET);
+fail unless sysseek(BIG, 4_500_000_000, SEEK_SET) == 4_500_000_000;
+print "ok 5\n";
fail unless sysseek(BIG, 0, SEEK_CUR) == 4_500_000_000;
-print "ok 3\n";
+print "ok 6\n";
-sysseek(BIG, 1, SEEK_CUR);
+fail unless sysseek(BIG, 1, SEEK_CUR) == 4_500_000_001;
+print "ok 7\n";
fail unless sysseek(BIG, 0, SEEK_CUR) == 4_500_000_001;
-print "ok 4\n";
+print "ok 8\n";
-sysseek(BIG, -1, SEEK_CUR);
+fail unless sysseek(BIG, -1, SEEK_CUR) == 4_500_000_000;
+print "ok 9\n";
fail unless sysseek(BIG, 0, SEEK_CUR) == 4_500_000_000;
-print "ok 5\n";
+print "ok 10\n";
-sysseek(BIG, -3, SEEK_END);
+fail unless sysseek(BIG, -3, SEEK_END) == 5_000_000_000;
+print "ok 11\n";
fail unless sysseek(BIG, 0, SEEK_CUR) == 5_000_000_000;
-print "ok 6\n";
+print "ok 12\n";
my $big;
fail unless sysread(BIG, $big, 3) == 3;
-print "ok 7\n";
+print "ok 13\n";
fail unless $big eq "big";
-print "ok 8\n";
+print "ok 14\n";
+
+# 705_032_704 = (I32)5_000_000_000
+fail unless seek(BIG, 705_032_704, $SEEK_SET);
+print "ok 15\n";
+
+my $zero;
+
+fail unless read(BIG, $zero, 3) == 3;
+print "ok 16\n";
+
+fail unless $zero eq "\0\0\0";
+print "ok 17\n";
explain if $fail;
-bye();
+bye(); # does the necessary cleanup
+
+END {
+ unlink "big"; # be paranoid about leaving 5 gig files lying around
+}
# eof
projects / p5sagit/p5-mst-13.2.git / blobdiff