Message-ID: <be953889-ba0f-4b4e-8a7c-ec03cbf270b2@dunslane.net>
Date: Tue, 11 Mar 2025 16:16:26 -0400
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Subject: Re: Non-text mode for pg_dumpall
To: =?UTF-8?Q?Dagfinn_Ilmari_Manns=C3=A5ker?= <ilmari@ilmari.org>,
 =?UTF-8?Q?=C3=81lvaro_Herrera?= <alvherre@alvh.no-ip.org>
Cc: Mahendra Singh Thalor <mahi6run@gmail.com>,
 jian he <jian.universality@gmail.com>, Srinath Reddy
 <srinath2133@gmail.com>, pgsql-hackers@lists.postgresql.org
References: <202503111705.xy7fddu36qae@alvherre.pgsql>
 <8734fj1mlq.fsf@wibble.ilmari.org>
From: Andrew Dunstan <andrew@dunslane.net>
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On 2025-03-11 Tu 1:52 PM, Dagfinn Ilmari Mannsåker wrote:
> Álvaro Herrera <alvherre@alvh.no-ip.org> writes:
>
>> Hello,
>>
>> On 2025-Mar-11, Mahendra Singh Thalor wrote:
>>
>>> In map.dat file, I tried to fix this issue by adding number of characters
>>> in dbname but as per code comments, as of now, we are not supporting \n\r
>>> in dbnames so i removed handling.
>>> I will do some more study to fix this issue.
>> Yeah, I think this is saying that you should not consider the contents
>> of map.dat as a shell string.  After all, you're not going to _execute_
>> that file via the shell.
>>
>> Maybe for map.dat you need to escape such characters somehow, so that
>> they don't appear as literal newlines/carriage returns.
> I haven't looked at the code for this, but why are we inventing an
> ad-hoc file format?  Why not use JSON, like we do for backup manifests?
> Then storing arbitrary database names won't be a problem.
>

I'm not sure everyone thinks that was a good idea for backup manifests 
(in fact I know some don't), and it seems somewhat like overkill for a 
simple map of oids to database names.


cheers


andrew


>
>
--
Andrew Dunstan
EDB: https://www.enterprisedb.com