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Reset properly errno before calling write()

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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
This commit is contained in:
Michael Paquier
2018-08-05 05:32:12 +09:00
parent c83408aa71
commit 7124e64520
7 changed files with 14 additions and 0 deletions
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1
src/backend/replication/logical/reorderbuffer.c
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@ -2426,6 +2426,7 @@ ReorderBufferSerializeChange(ReorderBuffer *rb, ReorderBufferTXN *txn,
ondisk->size = sz;
errno = 0;
pgstat_report_wait_start(WAIT_EVENT_REORDER_BUFFER_WRITE);
if (write(fd, rb->outbuf, ondisk->size) != ondisk->size)
{