Thread: pgsql: Reset properly errno before calling write()

pgsql: Reset properly errno before calling write()

From
Michael Paquier
Date:
Reset properly errno before calling write()

6cb3372 enforces errno to ENOSPC when less bytes than what is expected
have been written when it is unset, though it forgot to properly reset
errno before doing a system call to write(), causing errno to
potentially come from a previous system call.

Reported-by: Tom Lane
Author: Michael Paquier
Reviewed-by: Tom Lane
Discussion: https://postgr.es/m/31797.1533326676@sss.pgh.pa.us

Branch
------
REL_11_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/58673b4a5fdff4d0d327c2d07e0cf8743f86f44c

Modified Files
--------------
src/backend/access/heap/rewriteheap.c           | 1 +
src/backend/access/transam/twophase.c           | 1 +
src/backend/replication/logical/origin.c        | 3 +++
src/backend/replication/logical/reorderbuffer.c | 1 +
src/backend/replication/logical/snapbuild.c     | 1 +
src/backend/replication/slot.c                  | 1 +
src/bin/pg_basebackup/walmethods.c              | 6 ++++++
7 files changed, 14 insertions(+)