mirror of
https://github.com/coreutils/coreutils.git
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78 lines
2.0 KiB
Bash
78 lines
2.0 KiB
Bash
# -*- sh -*-
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# Source this file at the beginning of a test that works
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# only when run as root or as non-root.
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case "$PRIV_CHECK_ARG" in
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require-root) who='as root';;
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require-non-root) who='by an unprivileged user';;
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*) echo "Usage: PRIV_CHECK_ARG={require-root|require-non-root} . priv-check"\
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1>&2; exit 1;;
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esac
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# Make sure id -u succeeds.
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my_uid=`id -u`
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test $? = 0 || {
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echo "$0: cannot run \`id -u'" 1>&2
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(exit 1); exit
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}
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# Make sure it gives valid output.
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case $my_uid in
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*[!0-9]*)
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echo "$0: invalid output (\`$my_uid') from \`id -u'" 1>&2
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(exit 1); exit
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;;
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*) ;;
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esac
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test $my_uid = 0 && \
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{
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# When running as root, always ensure that we have a valid non-root username.
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# As non-root, don't do anything, since we won't be running setuidgid.
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: ${NON_ROOT_USERNAME=nobody}
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# Ensure that the supplied username is valid and with UID != 0.
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coreutils_non_root_uid=`id -u $NON_ROOT_USERNAME`
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test $? = 0 || \
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{
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echo "$0: This command failed: \`id -u $NON_ROOT_USERNAME'" 1>&2
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echo "$0: Skipping this test. To enable it, set the envvar" 1>&2
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echo "$0: NON_ROOT_USERNAME to a non-root user name." 1>&2
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(exit 77); exit 77
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}
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test "$coreutils_non_root_uid" = 0 && \
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{
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echo "$0: The specified NON_ROOT_USERNAME ($NON_ROOT_USERNAME)" 1>&2
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echo "$0: is invalid because its UID is 0." 1>&2
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(exit 1); exit 1
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}
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}
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give_msg=no
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case $PRIV_CHECK_ARG:$my_uid in
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require-root:0) ;;
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require-root:*) give_msg=yes ;;
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require-non-root:0)
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# `.' must be writable by $NON_ROOT_USERNAME
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setuidgid $NON_ROOT_USERNAME test -w . ||
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{
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echo "$0: `pwd`: not writable by user \`$NON_ROOT_USERNAME'" 1>&2
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echo "$0: skipping this test" 1>&2
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(exit 77); exit
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}
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exec setuidgid $NON_ROOT_USERNAME $0
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;;
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require-non-root:*) ;;
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esac
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test $give_msg = yes && {
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cat <<EOF
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***************************
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NOTICE:
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$0: This test is being skipped, since it works only
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when run $who.
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***************************
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EOF
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(exit 77); exit
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}
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