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.
This is based on a bug report I received from EnterpriseDB usage
testing.
--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ It's impossible for everything to be true. +