tests: fix resize test tmpfs max-file-size checking

Old distros may not have the "truncate" tool, so use "dd" instead.

If tmpfs cannot handle a 2GB temp file (e.g. old RHEL5 and SLES 11
kernels) then skip the test instead of failing it.  If this fails,
try to report better error messages instead of failing silently.

Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

tests/r_1024_small_bg/script

@@ -10,13 +10,17 @@ E2FSCK=../e2fsck/e2fsck
 
 . $cmd_dir/scripts/resize_test
 
-if resize_test
-then
+resize_test
+RC=$?
+if [ $RC -eq 0 ]; then
 	echo "$test_name: $test_description: ok"
 	touch $test_name.ok
+elif [ $RC -eq 111 ]; then
+	echo "$test_name: $test_description: skipped"
+	touch $test_name.ok
 else
 	echo "$test_name: $test_description: failed"
-	touch $test_name.failed
+	ln $LOG $test_name.failed
 fi
 
 unset FEATURES SIZE_1 SIZE_2 LOG E2FSCK

tests/r_64bit_big_expand/script

@@ -20,7 +20,7 @@ elif [ $RC -eq 111 ]; then
 	touch $test_name.ok
 else
 	echo "$test_name: $test_description: failed"
-	touch $test_name.failed
+	ln $LOG $test_name.failed
 fi
 
 unset FEATURES SIZE_1 SIZE_2 LOG E2FSCK

tests/r_bigalloc_big_expand/script

@@ -20,7 +20,7 @@ elif [ $RC -eq 111 ]; then
 	touch $test_name.ok
 else
 	echo "$test_name: $test_description: failed"
-	touch $test_name.failed
+	ln $LOG $test_name.failed
 fi
 
 unset FEATURES SIZE_1 SIZE_2 LOG E2FSCK

tests/r_ext4_big_expand/script

@@ -20,7 +20,7 @@ elif [ $RC -eq 111 ]; then
 	touch $test_name.ok
 else
 	echo "$test_name: $test_description: failed"
-	touch $test_name.failed
+	ln $LOG $test_name.failed
 fi
 
 unset FEATURES SIZE_1 SIZE_2 LOG E2FSCK

tests/r_ext4_small_bg/script

@@ -10,13 +10,17 @@ E2FSCK=../e2fsck/e2fsck
 
 . $cmd_dir/scripts/resize_test
 
-if resize_test
-then
+resize_test
+RC=$?
+if [ $RC -eq 0 ]; then
 	echo "$test_name: $test_description: ok"
 	touch $test_name.ok
+elif [ $RC -eq 111 ]; then
+	echo "$test_name: $test_description: skipped"
+	touch $test_name.ok
 else
 	echo "$test_name: $test_description: failed"
-	touch $test_name.failed
+	ln $LOG $test_name.failed
 fi
 
 unset FEATURES SIZE_1 SIZE_2 LOG E2FSCK

tests/scripts/resize_test

@@ -1,25 +1,36 @@
 #!/bin/sh
 
+# old distros are missing "truncate", emulate it with "dd"
+truncate()
+{
+	[ "$1" = "-s" ] && size=$2 && shift 2
+
+	dd if=/dev/zero of=$1 bs=1 count=0 seek=$size >> $LOG 2>&1
+}
+
 resize_test () {
 
+echo $test_description starting > $LOG
 rm -f $TMPFILE
 touch $TMPFILE
 
 # Verify that the $TMP filesystem handles $SIZE_2 sparse files.
 # If that fails, try the local filesystem instead.
 if truncate -s $SIZE_2 $TMPFILE 2> /dev/null; then
-        > $TMPFILE
+	echo "using $TMPFILE" >> $LOG
 else
 	rm $TMPFILE
 	export TMPFILE=$(TMPDIR=. mktemp -t $test_name.XXXXXX.tmp)
 	touch $TMPFILE
-	if ! truncate -s $SIZE_2 $TMPFILE 2> /dev/null; then
+	echo "using $TMPFILE" >> $LOG
+	if ! truncate -s $SIZE_2 $TMPFILE >> $LOG 2>&1; then
 		rm $TMPFILE
 		return 111
 	fi
 fi
+> $TMPFILE
 
-echo $MKE2FS $FEATURES -qF $TMPFILE $SIZE_1 > $LOG
+echo $MKE2FS $FEATURES -qF $TMPFILE $SIZE_1 >> $LOG
 $MKE2FS $FEATURES -qF $TMPFILE $SIZE_1 >> $LOG
 
 OUT_TMP=$(mktemp -t csum-tmp.XXXXXX)