release/src/router/busybox/testsuite/cp/cp-does-not-copy-unreadable-file


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touch foo
chmod a-r foo
set +e
if test `id -u` = 0; then
    # run as user with nonzero uid
    setuidgid 1 busybox cp foo bar
else
    busybox cp foo bar
fi
set -e
test ! -f bar