lxc-test-unpriv: fix the overlayfs mount error

This patch fixes the missing workdir issue for the overlayfs mount command in the lxc-test-unpriv test. Bug link: https://bugs.launchpad.net/bugs/1730915Signed-off-by: Po-Hsu Lin <po-hsu.lin@canonical.com>

lxc-test-unpriv: fix the overlayfs mount error
706f1101 · Po-Hsu Lin · 29e4eb31 · 706f1101
Commit 706f1101 authored Nov 08, 2017 by Po-Hsu Lin
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lxc-test-unpriv src/tests/lxc-test-unpriv +2 -2

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--- a/src/tests/lxc-test-unpriv
+++ b/src/tests/lxc-test-unpriv
@@ -39,8 +39,8 @@ if modprobe -q overlayfs; then

        mount -t tmpfs none ${MOUNTDIR}

-        mkdir "${MOUNTDIR}/lowerdir" "${MOUNTDIR}/upperdir" "${MOUNTDIR}/overlayfs"
-        mount -t overlayfs -o lowerdir="${MOUNTDIR}/lowerdir",upperdir="${MOUNTDIR}/upperdir" none "${MOUNTDIR}/overlayfs"
+        mkdir ${MOUNTDIR}/{lowerdir,upperdir,workdir,overlayfs}
+        mount -t overlayfs -o lowerdir="${MOUNTDIR}/lowerdir",upperdir="${MOUNTDIR}/upperdir",workdir="${MOUNTDIR}/workdir" none "${MOUNTDIR}/overlayfs"

        CORRECT_LINK_TARGET="${MOUNTDIR}/overlayfs/dummy_file"
        exec 9> "${CORRECT_LINK_TARGET}"