Bug#233798: Patch to check for mount options

Colin Watson <cjwatson@debian.org> writes:

> +# Return zero if it is possible to create devices and execute programs in
> +# this directory. (Both may be forbidden by mount options, e.g. nodev and
> +# noexec respectively.)
> +check_sane_mount () {
> + case "$ARCH" in
> + kfreebsd-*|hurd-*)
> + ;;
> + *)
> + mknod "$1/test-dev-null" c 1 3 || return 1
> + if ! echo test > "$1/test-dev-null"; then
> + rm -f "$1/test-dev-null"
> + return 1
> + fi
> + rm -f "$1/test-dev-null"
> + ;;
> + esac
> +
> + cat > "$1/test-exec" <<EOF
> +#! /bin/sh
> +:
> +EOF
> + chmod +x "$1/test-exec"
> + if ! "$1/test-exec"; then
> + rm -f "$1/test-exec"
> + return 1
> + fi
> + rm -f "$1/test-exec"
> +
> + return 0
> +}
> +

Cool :-)

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