481052c775
CreateHardLinkA reports ERROR_INVALID_FUNCTION if the target file
is on a filesystem that doesn't support hard links. _dosmaperr
maps that to EINVAL, which confuses zic.c into failure. zic.c is
expecting ENOTSUP if the filesystem lacks link support, and will
properly fall back to making a physical copy if it gets that.
Hence, add code to map ERROR_INVALID_FUNCTION to ENOTSUP.
(We could instead teach _dosmaperr to do that, but it's far from clear
that this would be appropriate as a global behavior: intuitively
it seems like EINVAL should be appropriate most of the time.)
We didn't need this before commit aeb07c55f, because the tzcode
version we were using before that didn't have this particular
error-handling logic. Hence, no back-patch for now; but if we
decide to back-patch tzcode 2026b or later, we'll need this too.
Author: Vladlen Popolitov <v.popolitov@postgrespro.ru>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/e6122f9b2eef9096f1f11ecc058bcd91@postgrespro.ru
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.
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