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This commit changes the following code paths to do direct system calls to some WIN32 functions rather than loading them from an external library, shaving some code in the process: - Creation of restricted tokens in pg_ctl.c, introduced by a25cd81. - QuerySecurityContextToken() in auth.c for SSPI authentication in the backend, introduced in d602592. - CreateRestrictedToken() in src/common/. This change is similar to the case of pg_ctl.c. Most of these functions were loaded rather than directly called because, as mentioned in the code comments, MinGW headers were not declaring them. I have double-checked the recent MinGW code, and all the functions changed here are declared in its headers, so this change should be safe. Note that I do not have a MinGW environment at hand so I have not tested it directly, but that MSVC was fine with the change. The buildfarm will tell soon enough if this change is appropriate or not for a much broader set of environments. A few code paths still use GetProcAddress() to load some functions: - LDAP authentication for ldap_start_tls_sA(), where I am not confident that this change would work. - win32env.c and win32ntdll.c where we have a per-MSVC version dependency for the name of the library loaded. - crashdump.c for MiniDumpWriteDump() and EnumDirTree(), where direct calls were not able to work after testing. Reported-by: Thomas Munro Reviewed-by: Justin Prysby Discussion: https://postgr.es/m/CA+hUKG+BMdcaCe=P-EjMoLTCr3zrrzqbcVE=8h5LyNsSVHKXZA@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/.