require Fcntl; import Fcntl qw(/^O_/ /^SEEK_/);
}
+use strict;
+
+$| = 1;
+
+our @s;
+our $fail;
+
sub zap {
close(BIG);
unlink("big");
exit(0);
}
+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
+ }
+ print "1..0 # Skip: @_\n" if @_;
}
print "# checking whether we have sparse files...\n";
# Known have-nots.
-if ($^O eq 'win32' || $^O eq 'vms') {
- print "1..0 # Skip: no sparse files (because this is $^O) \n";
+if ($^O eq 'MSWin32' || $^O eq 'NetWare' || $^O eq 'VMS') {
+ print "1..0 # Skip: no sparse files in $^O\n";
bye();
}
# Known haves that have problems running this test
# (for example because they do not support sparse files, like UNICOS)
if ($^O eq 'unicos') {
- print "1..0 # Skip: large files known to work but unable to test them here ($^O)\n";
+ print "1..0 # Skip: no sparse files in $^0, unable to test large files\n";
bye();
}
my $sysseek = sysseek(BIG, 5_000_000_000, SEEK_SET);
unless (! $r && defined $sysseek && $sysseek == 5_000_000_000) {
$sysseek = 'undef' unless defined $sysseek;
- print "1..0 # Skip: seeking past 2GB failed: ",
- $r ? 'signal '.($r & 0x7f) : "$! (sysseek returned $sysseek)", "\n";
- explain();
+ explain("seeking past 2GB failed: ",
+ $r ? 'signal '.($r & 0x7f) : "$! (sysseek returned $sysseek)");
bye();
}
print "# close failed: $!\n" unless $close;
unless($syswrite && $close) {
if ($! =~/too large/i) {
- print "1..0 # Skip: writing past 2GB failed: process limits?\n";
+ explain("writing past 2GB failed: process limits?");
} elsif ($! =~ /quota/i) {
- print "1..0 # Skip: filesystem quota limits?\n";
+ explain("filesystem quota limits?");
+ } else {
+ explain("error: $!");
}
- explain();
bye();
}
print "# @s\n";
unless ($s[7] == 5_000_000_003) {
- print "1..0 # Skip: not configured to use large files?\n";
- explain();
+ explain("kernel/fs not configured to use large files?");
bye();
}
$fail++;
}
+sub offset ($$) {
+ 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;
+ }
+}
+
print "1..17\n";
-my $fail = 0;
+$fail = 0;
fail unless $s[7] == 5_000_000_003; # exercizes pp_stat
print "ok 1\n";
sysopen(BIG, "big", O_RDONLY) or do { warn "sysopen failed: $!\n"; bye };
-fail unless sysseek(BIG, 4_500_000_000, SEEK_SET) == 4_500_000_000;
+offset('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;
+offset('sysseek(BIG, 0, SEEK_CUR)', 4_500_000_000);
print "ok 6\n";
-fail unless sysseek(BIG, 1, SEEK_CUR) == 4_500_000_001;
+offset('sysseek(BIG, 1, SEEK_CUR)', 4_500_000_001);
print "ok 7\n";
-fail unless sysseek(BIG, 0, SEEK_CUR) == 4_500_000_001;
+offset('sysseek(BIG, 0, SEEK_CUR)', 4_500_000_001);
print "ok 8\n";
-fail unless sysseek(BIG, -1, SEEK_CUR) == 4_500_000_000;
+offset('sysseek(BIG, -1, SEEK_CUR)', 4_500_000_000);
print "ok 9\n";
-fail unless sysseek(BIG, 0, SEEK_CUR) == 4_500_000_000;
+offset('sysseek(BIG, 0, SEEK_CUR)', 4_500_000_000);
print "ok 10\n";
-fail unless sysseek(BIG, -3, SEEK_END) == 5_000_000_000;
+offset('sysseek(BIG, -3, SEEK_END)', 5_000_000_000);
print "ok 11\n";
-fail unless sysseek(BIG, 0, SEEK_CUR) == 5_000_000_000;
+offset('sysseek(BIG, 0, SEEK_CUR)', 5_000_000_000);
print "ok 12\n";
my $big;
print "ok 14\n";
# 705_032_704 = (I32)5_000_000_000
-fail unless seek(BIG, 705_032_704, SEEK_SET);
+# See that we don't have "big" in the 705_... spot:
+# that would mean that we have a wraparound.
+fail unless sysseek(BIG, 705_032_704, SEEK_SET);
print "ok 15\n";
my $zero;
fail unless $zero eq "\0\0\0";
print "ok 17\n";
-explain if $fail;
+explain() if $fail;
bye(); # does the necessary cleanup
projects / p5sagit/p5-mst-13.2.git / blobdiff