#!/bin/sh
# This is just for the record.
# This test is not run.

# 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:

mount='sudo mount'

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
rm -rf /tmp/[12]