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Commit c5cb8f3b supposed that we'd only ever have to follow one junction point in stat(), because we don't construct longer chains of them ourselves. When examining a parent directory supplied by the user, we should really be able to cope with longer chains, just in case someone has their system set up that way. Choose an arbitrary cap of 8, to match the minimum acceptable value of SYMLOOP_MAX in POSIX. Previously I'd avoided reporting ELOOP thinking Windows didn't have it, but it turns out that it does, so we can use the proper error number. Reviewed-by: Roman Zharkov <r.zharkov@postgrespro.ru> Discussion: https://postgr.es/m/CA%2BhUKGJ7JDGWYFt9%3D-TyJiRRy5q9TtPfqeKkneWDr1XPU1%2Biqw%40mail.gmail.com Discussion: https://postgr.es/m/CA%2BhUKG%2BajSQ_8eu2AogTncOnZ5me2D-Cn66iN_-wZnRjLN%2Bicg%40mail.gmail.com Backpatched commit 4517358e as above by Thomas Munro into releases 13 thru 15 Discussion: https://postgr.es/m/CA+hUKGLbnv+pe3q1fYOVkLD3pMra7GuihfMxUN-1831YH9RYQg@mail.gmail.com
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: https://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 https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.