1 files changed, 69 insertions, 0 deletions
diff --git a/libparted/tests/t2100-zerolen.sh b/libparted/tests/t2100-zerolen.sh
new file mode 100755
index 0000000..8b9bfe0
--- /dev/null
+++ b/libparted/tests/t2100-zerolen.sh
@@ -0,0 +1,69 @@
+#!/bin/sh
+# run the zerolen unit tests in a directory supporting O_DIRECT
+
+# Copyright (C) 2007-2014, 2019-2023 Free Software Foundation, 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 3 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, see <http://www.gnu.org/licenses/>.
+
+. "${abs_top_srcdir=../..}/tests/init.sh"; path_prepend_ .
+. $abs_top_srcdir/tests/t-lib-helpers.sh
+# Need root privileges to create a device-mapper device.
+require_root_
+device_mapper_required_
+
+init_root_dir_
+
+# This test only makes sense on Linux.
+test "$(uname -s)" = Linux \
+  || skip_ "not on Linux"
+
+test "x$ENABLE_DEVICE_MAPPER" = xyes \
+  || skip_ "no device-mapper support"
+
+# Device map name - should be random to not conflict with existing ones on
+# the system
+linear_=plinear-$$
+
+cleanup_fn_()
+{
+  # 'dmsetup remove' may fail because udev is still processing the device.
+  # Try it repeatedly for 2s.
+  i=0
+  incr=1
+  while :; do
+    dmsetup remove $linear_ > /dev/null 2>&1 && break
+    sleep .1 2>/dev/null || { sleep 1; incr=10; }
+    i=$(expr $i + $incr); test $i = 20 && break
+  done
+  if test $i = 20; then
+    dmsetup remove $linear_
+  fi
+
+  test -n "$d1" && losetup -d "$d1"
+  rm -f "$f1"
+}
+
+f1=$(pwd)/1
+d1=$(loop_setup_ "$f1") \
+  || skip_ "is this partition mounted with 'nodev'?"
+
+echo "0 1024 linear $d1 0" | dmsetup create "$linear_" \
+  || skip_ "unable to create dm device"
+
+wait_for_dev_to_appear_ "/dev/mapper/$linear_" \
+  || skip_ "dm device did not appear"
+
+zerolen /dev/mapper/$linear_ || fail=1
+
+Exit $fail