Better error messages for short reads/writes in SLRU
authorPeter Eisentraut <peter@eisentraut.org>
Tue, 3 Sep 2019 06:26:55 +0000 (08:26 +0200)
committerPeter Eisentraut <peter@eisentraut.org>
Tue, 3 Sep 2019 06:30:21 +0000 (08:30 +0200)
commit396e4afdbcbfd3398415f1a0a29668d6a24a2ddd
tree6fd86804b692f0e0a309afdee717620276ee7499
parent4e72a8e11e3440b10a10c8de4be2f6664ec41115
Better error messages for short reads/writes in SLRU

This avoids getting a

    Could not read from file ...: Success.

for a short read or write (since errno is not set in that case).
Instead, report a more specific error messages.

Reviewed-by: Michael Paquier <michael@paquier.xyz>
Discussion: http://www.postgresql.org/message-id/flat/5de61b6b-8be9-7771-0048-860328efe027%402ndquadrant.com
src/backend/access/transam/slru.c