Add lasterrno setting for dir_existsfile()

Wei Sun <936739278@qq.com>

From: Wei Sun <936739278@qq.com>

To: pgsql-hackers <pgsql-hackers@postgresql.org>

Date: 2022-01-09T16:19:28Z

Lists: pgsql-hackers

Attachments

add_lasterrno_setting.patch (application/octet-stream) patch

Hi,



Some time ago,the following patch clean up error handling in pg_basebackup's walmethods.c.
https://github.com/postgres/postgres/commit/248c3a9


This patch keep the error state in the DirectoryMethodData struct,
in most functions, the lasterrno&nbsp;is set correctly, but in function dir_existsfile(),&nbsp;
the lasterrno is not set when the file fails to open.




If this is a correction omission, I think this patch can fix this.


Cheers