lib: Added filesystem_walk command tests

The tests check whether the filesystem_walk command is able to retrieve
information regarding both existing and deleted files.

A NTFS image is used as Ext3+ filesystems deletion is more aggressive
in terms of metadata removal.

Signed-off-by: Matteo Cafasso <noxdafox@gmail.com>

tests/tsk/Makefile.am

@@ -18,7 +18,8 @@
 include $(top_srcdir)/subdir-rules.mk
 
 TESTS = \
-	test-download-inode.sh
+	test-download-inode.sh \
+	test-filesystem-walk.sh
 
 TESTS_ENVIRONMENT = $(top_builddir)/run --test
 

tests/tsk/test-filesystem-walk.sh

@@ -0,0 +1,82 @@
+#!/bin/bash -
+# libguestfs
+# Copyright (C) 2016 Red Hat Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+# Test the filesystem-walk command.
+
+if [ -n "$SKIP_TEST_FILESYSTEM_WALK_SH" ]; then
+    echo "$0: test skipped because environment variable is set."
+    exit 77
+fi
+
+# Skip if TSK is not supported by the appliance.
+if ! guestfish add /dev/null : run : available "libtsk"; then
+    echo "$0: skipped because TSK is not available in the appliance"
+    exit 77
+fi
+
+if [ ! -s ../../test-data/phony-guests/windows.img ]; then
+    echo "$0: skipped because windows.img is zero-sized"
+    exit 77
+fi
+
+output=$(
+guestfish --ro -a ../../test-data/phony-guests/windows.img <<EOF
+run
+mount /dev/sda2 /
+write /test.txt "foobar"
+rm /test.txt
+umount /
+filesystem-walk /dev/sda2
+EOF
+)
+
+# test $MFT is in the list
+echo $output | grep -zq '{ tsk_inode: 0
+tsk_type: r
+tsk_size: .*
+tsk_name: \$MFT
+tsk_flags: 1
+tsk_spare1: 0
+tsk_spare2: 0
+tsk_spare3: 0
+tsk_spare4: 0
+tsk_spare5: 0 }'
+if [ $? != 0 ]; then
+    echo "$0: \$MFT not found in files list."
+    echo "File list:"
+    echo $output
+    exit 1
+fi
+
+# test deleted file is in the list
+echo $output | grep -zq '{ tsk_inode: .*
+tsk_type: [ru]
+tsk_size: .*
+tsk_name: test.txt
+tsk_flags: 0
+tsk_spare1: 0
+tsk_spare2: 0
+tsk_spare3: 0
+tsk_spare4: 0
+tsk_spare5: 0 }'
+if [ $? != 0 ]; then
+    echo "$0: /test.txt not found in files list."
+    echo "File list:"
+    echo $output
+    exit 1
+fi