[LTP] [PATCH 3/3] Add test for NFS directory listing regression

[Martin Doucha]

---
 runtest/net.nfs                           | 11 +++++
 testcases/network/nfs/nfs_stress/Makefile |  3 +-
 testcases/network/nfs/nfs_stress/nfs07.sh | 56 +++++++++++++++++++++++
 3 files changed, 69 insertions(+), 1 deletion(-)
 create mode 100755 testcases/network/nfs/nfs_stress/nfs07.sh

diff --git a/runtest/net.nfs b/runtest/net.nfs
index 3df35809a..042c14ce4 100644
--- a/runtest/net.nfs
+++ b/runtest/net.nfs
@@ -61,6 +61,17 @@ nfs01_06  nfs06 -v "3,3,3,4,4,4" -t "udp,udp,tcp,tcp,tcp,tcp"
 nfs02_06 nfs06 -v "3,4,4.1,4.2,4.2,4.2" -t "udp,tcp,tcp,tcp,tcp,tcp"
 nfs03_ipv6_06 nfs06 -6 -v "4,4.1,4.1,4.2,4.2,4.2" -t "tcp,tcp,tcp,tcp,tcp,tcp"
 
+nfs3_07 nfs07.sh -v 3 -t udp
+nfs3t_07 nfs07.sh -v 3 -t tcp
+nfs4_07 nfs07.sh -v 4 -t tcp
+nfs41_07 nfs07.sh -v 4.1 -t tcp
+nfs42_07 nfs07.sh -v 4.2 -t tcp
+nfs3_ipv6_07 nfs07.sh -6 -v 3 -t udp
+nfs3t_ipv6_07 nfs07.sh -6 -v 3 -t tcp
+nfs4_ipv6_07 nfs07.sh -6 -v 4 -t tcp
+nfs41_ipv6_07 nfs07.sh -6 -v 4.1 -t tcp
+nfs42_ipv6_07 nfs07.sh -6 -v 4.2 -t tcp
+
 nfslock3_01 nfslock01 -v 3 -t udp
 nfslock3t_01 nfslock01 -v 3 -t tcp
 nfslock4_01 nfslock01 -v 4 -t tcp
diff --git a/testcases/network/nfs/nfs_stress/Makefile b/testcases/network/nfs/nfs_stress/Makefile
index 856008ce2..0b7408e29 100644
--- a/testcases/network/nfs/nfs_stress/Makefile
+++ b/testcases/network/nfs/nfs_stress/Makefile
@@ -15,6 +15,7 @@ INSTALL_TARGETS		:= nfs_lib.sh \
 			   nfs03 \
 			   nfs04 \
 			   nfs05 \
-			   nfs06
+			   nfs06 \
+			   nfs07.sh
 
 include $(top_srcdir)/include/mk/generic_leaf_target.mk
diff --git a/testcases/network/nfs/nfs_stress/nfs07.sh b/testcases/network/nfs/nfs_stress/nfs07.sh
new file mode 100755
index 000000000..d8e482751
--- /dev/null
+++ b/testcases/network/nfs/nfs_stress/nfs07.sh
@@ -0,0 +1,56 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (c) 2021 SUSE LLC <mdoucha@suse.cz>
+#
+#  DESCRIPTION: Create a large number of files and directories on NFS volume.
+#  Then check whether they can be listed via NFS.
+
+FILE_COUNT=5000
+
+TST_OPTS="n:"
+TST_PARSE_ARGS=do_parse_args
+TST_TESTFUNC="do_test"
+TST_SETUP="do_setup"
+
+do_parse_args()
+{
+	case "$1" in
+	n) FILE_COUNT="$2";;
+	esac
+}
+
+. nfs_lib.sh
+
+do_setup()
+{
+	nfs_setup
+
+	local rpath=$(nfs_get_remote_path)
+	tst_rhost_run -s -c "touch $rpath/file{1..$FILE_COUNT}"
+	tst_rhost_run -s -c "mkdir $rpath/dir{1..$FILE_COUNT}"
+}
+
+do_test()
+{
+	local count
+
+	# Pass the list of files through `sort -u` in case `ls` doesn't fitler
+	# out potential duplicate filenames returned by buggy NFS
+	count=`ls | grep '^file' | sort -u | wc -l`
+
+	if [ $count -ne $FILE_COUNT ]; then
+		tst_res TFAIL "Listing files failed: $count != $FILE_COUNT"
+		return
+	fi
+
+	count=`ls | grep '^dir' | sort -u | wc -l`
+
+	if [ $count -ne $FILE_COUNT ]; then
+		tst_res TFAIL "Listing dirs failed: $count != $FILE_COUNT"
+		return
+	fi
+
+	tst_res TPASS "All files and directories were correctly listed"
+}
+
+tst_run
-- 
2.33.0