Bruce Momjian <bruce@momjian.us> writes:
> I have added the attached patch to pg_upgrade to print a clear error
> message if you don't have read/write/execute permission in the current
> directory, which is needed for pg_upgrade to read/write temporary files.
"full access permissions" seems unhelpfully vague. Why not say
"you must have both read and write access to the current directory"?
regards, tom lane