1 files changed, 52 insertions, 0 deletions
diff --git a/tests/mkdir/writable-under-readonly.sh b/tests/mkdir/writable-under-readonly.sh
new file mode 100755
index 0000000..ae3beb3
--- /dev/null
+++ b/tests/mkdir/writable-under-readonly.sh
@@ -0,0 +1,52 @@
+#!/bin/sh
+# FIXME: convert this to a root-only test.
+
+# Copyright (C) 2005-2016 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/>.
+
+# Test for the 2005-10-13 patch to lib/mkdir-p.c that fixed this sort
+# of bug in mkdir:
+#
+#   "mkdir -p /a/b/c" no longer fails merely because a leading prefix
+#   directory (e.g., /a or /a/b) exists on a read-only file system.
+#
+# Demonstrate the problem, as root:
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ mkdir
+require_root_
+
+# FIXME: for now, skip it unconditionally
+skip_ temporarily disabled
+
+# FIXME: define cleanup_ to do the umount
+
+# FIXME: use mktemp
+cd /tmp                                    \
+  && dd if=/dev/zero of=1 bs=8192 count=50 \
+  && dd if=/dev/zero of=2 bs=8192 count=50 \
+  && mkdir -p mnt-ro && mkfs -t ext2 1 && mkfs -t ext2 2 \
+  && mount -o loop=/dev/loop3 1 mnt-ro    \
+  && mkdir -p mnt-ro/rw                    \
+  && mount -o remount,ro mnt-ro           \
+  && mount -o loop=/dev/loop4 2 mnt-ro/rw
+
+mkdir -p mnt-ro/rw/sub || fail=1
+
+# To clean up
+umount /tmp/2
+umount /tmp/1
+
+Exit $fail