xfs/195: Use XFSDUMP_PROG instead of xfsdump directly

Use appropriate environment variable (XFSDUMP_PROG) instead of
hardcoding 'xfsdump' name. Also make the test fail graciously when
xfsdump isn't installed.

We also make XFSDUMP_PROG be equal to empty string instead of -e when
xfsdump isn't installed. The changes require some tweaking to output
filtering since full command path now appears in the output.

Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

common/config

@@ -163,7 +163,11 @@ export XFS_IO_PROG="`set_prog_path xfs_io`"
 export XFS_PARALLEL_REPAIR_PROG="`set_prog_path xfs_prepair`"
 export XFS_PARALLEL_REPAIR64_PROG="`set_prog_path xfs_prepair64`"
 export __XFSDUMP_PROG="`set_prog_path xfsdump`"
-export XFSDUMP_PROG="$__XFSDUMP_PROG -e"
+if [ -n "$__XFSDUMP_PROG" ]; then
+	export XFSDUMP_PROG="$__XFSDUMP_PROG -e"
+else
+	export XFSDUMP_PROG=""
+fi
 export XFSRESTORE_PROG="`set_prog_path xfsrestore`"
 export XFSINVUTIL_PROG="`set_prog_path xfsinvutil`"
 export GETFATTR_PROG="`set_prog_path getfattr`"

tests/xfs/195

@@ -48,11 +48,11 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 #
 _do_dump()
 {
-	xfsdump -l 0 -s d -F  \
+	$XFSDUMP_PROG -l 0 -s d -F  \
 		-L prova -M prova \
-		-f $TEST_DIR/dumpfile -e -v excluded_files=debug $TEST_DIR \
+		-f $TEST_DIR/dumpfile -v excluded_files=debug $TEST_DIR \
 		| grep "ino $inum" \
-		| sed -e 's/xfsdump: pruned ino [0-9]*, owner 0, estimated size 0: skip flag set/xfsdump: pruned ino NNN, owner 0, estimated size 0: skip flag set/'
+		| sed -e 's/.*xfsdump: pruned ino [0-9]*, owner 0, estimated size 0: skip flag set/xfsdump: pruned ino NNN, owner 0, estimated size 0: skip flag set/'
 }
 
 # get standard environment, filters and checks
@@ -65,6 +65,7 @@ _supported_os Linux
 
 _require_test
 _require_user
+_require_command $XFSDUMP_PROG xfsdump
 
 echo "Preparing subtree"
 mkdir $TEST_DIR/d