1 files changed, 35 insertions, 0 deletions
diff --git a/tests/dd/direct.sh b/tests/dd/direct.sh
new file mode 100755
index 0000000..cbac194
--- /dev/null
+++ b/tests/dd/direct.sh
@@ -0,0 +1,35 @@
+#!/bin/sh
+# ensure that dd's iflag=direct and oflag=direct work
+
+# Copyright (C) 2009-2018 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 <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ dd
+
+truncate -s 8192 in || framework_failure_
+dd if=in oflag=direct of=out 2> /dev/null \
+  || skip_ '512 byte aligned O_DIRECT is not supported on this (file) system'
+
+truncate -s 511 short || framework_failure_
+truncate -s 8191 m1 || framework_failure_
+truncate -s 8193 p1 || framework_failure_
+
+for i in short m1 p1; do
+  rm -f out
+  dd if=$i iflag=direct oflag=direct of=out || fail=1
+done
+
+Exit $fail