Re: [PATCH] `pg_dump -Fd` doesn't check write return status...

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Noah Misch <noah(at)leadboat(dot)com>
Cc: Sean Chittenden <sean(at)chittenden(dot)org>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: [PATCH] `pg_dump -Fd` doesn't check write return status...
Date: 2014-05-06 14:01:20
Message-ID: 20140506140120.GC30817@momjian.us
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On Tue, May 6, 2014 at 09:22:20AM -0400, Noah Misch wrote:
> On Mon, May 05, 2014 at 08:29:56PM -0400, Bruce Momjian wrote:
> > On Tue, Apr 22, 2014 at 03:19:15PM -0400, Bruce Momjian wrote:
> > > As is often the case with pg_dump, the problems you saw are a small part
> > > of a larger set of problems in that code --- there is general ignoring of
> > > read and write errors.
> > >
> > > I have developed a comprehensive patch that addresses all the issues I
> > > could find. The use of function pointers and the calling of functions
> > > directly and through function pointers makes the fix quite complex. I
> > > ended up placing checks at the lowest level and removing checks at
> > > higher layers where they were sporadically placed.
> > >
> > > Patch attached. I have tested dump/restore of all four dump output
> > > formats with the 9.3 regression database and all tests passed. I
> > > believe this patch is too complex to backpatch, and I don't know how it
> > > could be fixed more simply.
> >
> > Patch applied. Thanks for the report.
>
> This broke automatic detection of tar-format dumps:
>
> $ pg_dump -Ft -f tardump
> $ pg_restore tardump
> pg_restore: [archiver] could not read from input file: Success
> $ pg_restore -Ft tardump | wc -c
> 736

OK, thanks for the report. Fixed.

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

+ Everyone has their own god. +

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