priv-check

Linux下文件工具。

# -*- sh -*-
# Source this file at the beginning of a test that works
# only when run as root or as non-root.

case "$PRIV_CHECK_ARG" in
  require-root) who='as root';;
  require-non-root) who='by an unprivileged user';;
  *) echo "Usage: PRIV_CHECK_ARG={require-root|require-non-root} . priv-check"\
     1>&2; exit 1;;
esac

priv_check_temp=priv-check.$$
touch $priv_check_temp || framework_failure=1
chmod a-w $priv_check_temp || framework_failure=1

(echo foo >> $priv_check_temp) >/dev/null 2>&1
overwrite_status=$?
give_msg=no
case $PRIV_CHECK_ARG:$overwrite_status in
  require-root:0) ;;
  require-root:*) give_msg=yes ;;
  require-non-root:0) give_msg=yes ;;
  require-non-root:*) ;;
esac

test $give_msg = yes && {
  cat <<EOF
***************************
NOTICE:
$0: This test is being skipped, since it works only
when run $who.
***************************
EOF
  rm -f $priv_check_temp
  (exit 77); exit
}

rm -f $priv_check_temp