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-rw-r--r--ext/Fcntl/t/fcntl.t46
-rw-r--r--ext/Fcntl/t/syslfs.t267
2 files changed, 313 insertions, 0 deletions
diff --git a/ext/Fcntl/t/fcntl.t b/ext/Fcntl/t/fcntl.t
new file mode 100644
index 0000000000..24ade27c92
--- /dev/null
+++ b/ext/Fcntl/t/fcntl.t
@@ -0,0 +1,46 @@
+#!./perl
+
+# A modest test: exercises only O_WRONLY, O_CREAT, and O_RDONLY.
+# Have to be modest to be portable: could possibly extend testing
+# also to O_RDWR and O_APPEND, but dunno about the portability of,
+# say, O_TRUNC and O_EXCL, not to mention O_NONBLOCK.
+
+use Fcntl;
+
+print "1..6\n";
+
+print "ok 1\n";
+
+if (sysopen(my $wo, "fcntl$$", O_WRONLY|O_CREAT)) {
+ print "ok 2\n";
+ if (syswrite($wo, "foo") == 3) {
+ print "ok 3\n";
+ close($wo);
+ if (sysopen(my $ro, "fcntl$$", O_RDONLY)) {
+ print "ok 4\n";
+ if (sysread($ro, my $read, 3)) {
+ print "ok 5\n";
+ if ($read eq "foo") {
+ print "ok 6\n";
+ } else {
+ print "not ok 6 # content '$read' not ok\n";
+ }
+ } else {
+ print "not ok 5 # sysread failed: $!\n";
+ }
+ } else {
+ print "not ok 4 # sysopen O_RDONLY failed: $!\n";
+ }
+ close($ro);
+ } else {
+ print "not ok 3 # syswrite failed: $!\n";
+ }
+ close($wo);
+} else {
+ print "not ok 2 # sysopen O_WRONLY failed: $!\n";
+}
+
+END {
+ 1 while unlink "fcntl$$";
+}
+
diff --git a/ext/Fcntl/t/syslfs.t b/ext/Fcntl/t/syslfs.t
new file mode 100644
index 0000000000..8d9769fded
--- /dev/null
+++ b/ext/Fcntl/t/syslfs.t
@@ -0,0 +1,267 @@
+# NOTE: this file tests how large files (>2GB) work with raw system IO.
+# stdio: open(), tell(), seek(), print(), read() is tested in t/op/lfs.t.
+# If you modify/add tests here, remember to update also t/op/lfs.t.
+
+BEGIN {
+ chdir 't' if -d 't';
+ @INC = '../lib';
+ require Config; import Config;
+ # Don't bother if there are no quad offsets.
+ if ($Config{lseeksize} < 8) {
+ print "1..0 # Skip: no 64-bit file offsets\n";
+ exit(0);
+ }
+ require Fcntl; import Fcntl qw(/^O_/ /^SEEK_/);
+}
+
+use strict;
+
+$| = 1;
+
+our @s;
+our $fail;
+
+sub zap {
+ close(BIG);
+ unlink("big");
+ unlink("big1");
+ unlink("big2");
+}
+
+sub bye {
+ zap();
+ exit(0);
+}
+
+my $explained;
+
+sub explain {
+ 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 (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 '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: no sparse files in $^0, unable to test large files\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
+# consume less blocks than one megabyte (assuming nobody has
+# one megabyte blocks...)
+
+sysopen(BIG, "big1", O_WRONLY|O_CREAT|O_TRUNC) or
+ do { warn "sysopen big1 failed: $!\n"; bye };
+sysseek(BIG, 1_000_000, SEEK_SET) or
+ do { warn "sysseek big1 failed: $!\n"; bye };
+syswrite(BIG, "big") or
+ do { warn "syswrite big1 failed; $!\n"; bye };
+close(BIG) or
+ do { warn "close big1 failed: $!\n"; bye };
+
+my @s1 = stat("big1");
+
+print "# s1 = @s1\n";
+
+sysopen(BIG, "big2", O_WRONLY|O_CREAT|O_TRUNC) or
+ do { warn "sysopen big2 failed: $!\n"; bye };
+sysseek(BIG, 2_000_000, SEEK_SET) or
+ do { warn "sysseek big2 failed: $!\n"; bye };
+syswrite(BIG, "big") or
+ do { warn "syswrite big2 failed; $!\n"; bye };
+close(BIG) or
+ do { warn "close big2 failed: $!\n"; bye };
+
+my @s2 = stat("big2");
+
+print "# s2 = @s2\n";
+
+zap();
+
+unless ($s1[7] == 1_000_003 && $s2[7] == 2_000_003 &&
+ $s1[11] == $s2[11] && $s1[12] == $s2[12]) {
+ print "1..0 # Skip: no sparse files?\n";
+ 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.
+# 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 (! $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();
+}
+
+# The syswrite will fail if there are are filesize limitations (process or fs).
+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) {
+ explain("writing past 2GB failed: process limits?");
+ } elsif ($! =~ /quota/i) {
+ explain("filesystem quota limits?");
+ } else {
+ explain("error: $!");
+ }
+ bye();
+}
+
+@s = stat("big");
+
+print "# @s\n";
+
+unless ($s[7] == 5_000_000_003) {
+ explain("kernel/fs not configured to use large files?");
+ bye();
+}
+
+sub fail () {
+ print "not ";
+ $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,
+ $offset_is;
+ }
+ fail;
+ }
+}
+
+print "1..17\n";
+
+$fail = 0;
+
+fail unless $s[7] == 5_000_000_003; # exercizes pp_stat
+print "ok 1\n";
+
+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 };
+
+offset('sysseek(BIG, 4_500_000_000, SEEK_SET)', 4_500_000_000);
+print "ok 5\n";
+
+offset('sysseek(BIG, 0, SEEK_CUR)', 4_500_000_000);
+print "ok 6\n";
+
+offset('sysseek(BIG, 1, SEEK_CUR)', 4_500_000_001);
+print "ok 7\n";
+
+offset('sysseek(BIG, 0, SEEK_CUR)', 4_500_000_001);
+print "ok 8\n";
+
+offset('sysseek(BIG, -1, SEEK_CUR)', 4_500_000_000);
+print "ok 9\n";
+
+offset('sysseek(BIG, 0, SEEK_CUR)', 4_500_000_000);
+print "ok 10\n";
+
+offset('sysseek(BIG, -3, SEEK_END)', 5_000_000_000);
+print "ok 11\n";
+
+offset('sysseek(BIG, 0, SEEK_CUR)', 5_000_000_000);
+print "ok 12\n";
+
+my $big;
+
+fail unless sysread(BIG, $big, 3) == 3;
+print "ok 13\n";
+
+fail unless $big eq "big";
+print "ok 14\n";
+
+# 705_032_704 = (I32)5_000_000_000
+# 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 read(BIG, $zero, 3) == 3;
+print "ok 16\n";
+
+fail unless $zero eq "\0\0\0";
+print "ok 17\n";
+
+explain() if $fail;
+
+bye(); # does the necessary cleanup
+
+END {
+ unlink "big"; # be paranoid about leaving 5 gig files lying around
+}
+
+# eof
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