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There's no really compelling reason to refuse to do these read-only, non-server-starting options as root, and there's at least one good reason to allow -C: pg_ctl uses -C to find out the true data directory location when pointed at a config-only directory. On Windows, this is done before dropping administrator privileges, which means that pg_ctl fails for administrators if and only if a config-only layout is used. Since the root-privilege check is done so early in startup, it's a bit awkward to check for these switches. Make the somewhat arbitrary decision that we'll only skip the root check if -C is the first switch. This is not just to make the code a bit simpler: it also guarantees that we can't misinterpret a --boot mode switch. (While AuxiliaryProcessMain doesn't currently recognize any such switch, it might have one in the future.) This is no particular problem for pg_ctl, and since the whole behavior is undocumented anyhow, it's not a documentation issue either. (--describe-config only works as the first switch anyway, so this is no restriction for that case either.) Back-patch to 9.2 where pg_ctl first began to use -C. MauMau, heavily edited by me |
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PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: http://www.postgresql.org/download See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.