Further VMS piping fixes from Charles Lane:

[p5sagit/p5-mst-13.2.git] / t / op / lfs.t

diff --git a/t/op/lfs.t b/t/op/lfs.t
index e704f6f..e732adc 100644 (file)
--- a/t/op/lfs.t
+++ b/t/op/lfs.t
@@ -4,11 +4,11 @@
 
 BEGIN {
        chdir 't' if -d 't';
-       unshift @INC, '../lib';
+       @INC = '../lib';
        # 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";
+               print "1..0 # Skip: no 64-bit file offsets\n";
                exit(0);
        }
 }
@@ -25,35 +25,42 @@ sub bye {
     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();
 }
 
@@ -102,7 +109,7 @@ zap();
 
 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;
 }
 
@@ -110,14 +117,22 @@ 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";
 
+my $r = system '../perl', '-e', <<'EOF';
+open(BIG, ">big");
+seek(BIG, 5_000_000_000, 0);
+print BIG "big";
+exit 0;
+EOF
+
 open(BIG, ">big") or do { warn "open failed: $!\n"; bye };
 binmode BIG;
-unless (seek(BIG, 5_000_000_000, $SEEK_SET)) {
-    print "1..0\n# seeking past 2GB failed: $!\n";
-    explain();
+if ($r or not seek(BIG, 5_000_000_000, $SEEK_SET)) {
+    my $err = $r ? 'signal '.($r & 0x7f) : $!;
+    explain("seeking past 2GB failed: $err");
     bye();
 }
 
@@ -129,11 +144,12 @@ 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();
 }
 
@@ -142,8 +158,7 @@ unless ($print && $close) {
 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();
 }
 
@@ -215,7 +230,7 @@ print "ok 16\n";
 fail unless $zero eq "\0\0\0";
 print "ok 17\n";
 
-explain if $fail;
+explain() if $fail;
 
 bye(); # does the necessary cleanup