BEGIN {
chdir 't' if -d 't';
- unshift @INC, '../lib';
+ @INC = '../lib';
require Config; import Config;
# Don't bother if there are no quad offsets.
if ($Config{lseeksize} < 8) {
- print "1..0\n# no 64-bit file offsets\n";
+ print "1..0 # Skip: no 64-bit file offsets\n";
exit(0);
}
require Fcntl; import Fcntl qw(/^O_/ /^SEEK_/);
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\n# no sparse files (because this is $^O) \n";
+if ($^O eq 'MSWin32' || $^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\n# large files known to work but unable to test them here ($^O)\n";
+ print "1..0 # Skip: no sparse files in $^0, unable to test large files\n";
bye();
}
unless ($s1[7] == 1_000_003 && $s2[7] == 2_000_003 &&
$s1[11] == $s2[11] && $s1[12] == $s2[12]) {
- print "1..0\n#no sparse files?\n";
+ print "1..0 # Skip: no sparse files?\n";
bye;
}
# 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";
+my $r = system '../perl', '-I../lib', '-e', <<'EOF';
+use Fcntl qw(/^O_/ /^SEEK_/);
+sysopen(BIG, "big", O_WRONLY|O_CREAT|O_TRUNC) or die $!;
+my $sysseek = sysseek(BIG, 5_000_000_000, SEEK_SET);
+my $syswrite = syswrite(BIG, "big");
+exit 0;
+EOF
+
sysopen(BIG, "big", O_WRONLY|O_CREAT|O_TRUNC) or
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();
+unless (! $r && defined $sysseek && $sysseek == 5_000_000_000) {
+ $sysseek = 'undef' unless defined $sysseek;
+ 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\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: $!");
}
- explain();
bye();
}
print "# @s\n";
unless ($s[7] == 5_000_000_003) {
- print "1..0\n# not configured to use large files?\n";
- explain();
+ explain("kernel/fs not configured to use large files?");
bye();
}
print "ok 14\n";
# 705_032_704 = (I32)5_000_000_000
-fail unless seek(BIG, 705_032_704, SEEK_SET);
+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