tests: skip large filesystem tests on MacOS

Skip tests that create large filesystem on MacOS, since HFS doesn't
have sparse file support and this causes testing to be uninterruptible
for minutes while mke2fs is writing to some large non-zero offset and
filling up the test filesystem.  Since most testing is done on Linux
this shouldn't cause a significant gap in testing coverage.

Tests skipped are d_dumpe2fs_group_only, m_bigjournal, m_hugefile,
t_iexpand_full, t_iexpand_mcsum, and t_uninit_bg_rm.

Signed-off-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

tests/d_dumpe2fs_group_only/script

@@ -1,3 +1,9 @@
+if [ $(uname -s) = "Darwin" ]; then
+	# creates a 4GB filesystem
+	echo "$test_name: $DESCRIPTION: skipped for HFS+ (no sparse files)"
+	return 0
+fi
+
 if test -x $DEBUGFS_EXE; then
 
 FSCK_OPT=-fy

tests/m_bigjournal/script

@@ -4,6 +4,7 @@ DUMPE2FS_IGNORE_80COL=1
 export DUMPE2FS_IGNORE_80COL
 MKE2FS_OPTS="-t ext4 -G 512 -N 1280 -J size=5000 -q -E lazy_journal_init,lazy_itable_init,nodiscard"
 if [ $(uname -s) = "Darwin" ]; then
+	# creates a 44GB filesystem
 	echo "$test_name: $DESCRIPTION: skipped for HFS+ (no sparse files)"
 	return 0
 fi

tests/m_hugefile/script

@@ -3,6 +3,12 @@ OUT=$test_name.log
 EXP=$test_dir/expect
 CONF=$TMPFILE.conf
 
+if [ $(uname -s) = "Darwin" ]; then
+	# creates a 4TB filesystem
+	echo "$test_name: $DESCRIPTION: skipped for HFS+ (no sparse files)"
+	return 0
+fi
+
 #gzip -d < $EXP.gz > $EXP
 
 cat > $CONF << ENDL

tests/t_iexpand_full/script

@@ -1,5 +1,11 @@
 if test -x $RESIZE2FS_EXE -a -x $DEBUGFS_EXE; then
 
+if [ $(uname -s) = "Darwin" ]; then
+	# creates a 3GB filesystem
+	echo "$test_name: $DESCRIPTION: skipped for HFS+ (no sparse files)"
+	return 0
+fi
+
 FSCK_OPT=-fn
 OUT=$test_name.log
 EXP=$test_dir/expect

tests/t_iexpand_mcsum/script

@@ -1,4 +1,9 @@
 if test -x $RESIZE2FS_EXE -a -x $DEBUGFS_EXE; then
+if [ $(uname -s) = "Darwin" ]; then
+	# creates a 3GB filesystem
+	echo "$test_name: $DESCRIPTION: skipped for HFS+ (no sparse files)"
+	return 0
+fi
 
 FSCK_OPT=-fn
 OUT=$test_name.log

tests/t_uninit_bg_rm/script

@@ -3,6 +3,12 @@ OUT=$test_name.log
 FSCK_OPT=-yf
 EXP=$test_dir/expect
 
+if [ $(uname -s) = "Darwin" ]; then
+	# creates a 10GB filesystem
+	echo "$test_name: $DESCRIPTION: skipped for HFS+ (no sparse files)"
+	return 0
+fi
+
 cp /dev/null $TMPFILE
 rm -f $OUT.new