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Diffstat (limited to '')
| -rwxr-xr-x | tests/mkdir/writable-under-readonly.sh | 52 |
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..6105428 --- /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) 2005-2018 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/>. + +# 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 |