|From:||Nathan Bossart <nathandbossart(at)gmail(dot)com>|
|To:||Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>|
|Cc:||Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>|
|Subject:||Re: improving user.c error messages|
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On Fri, Jan 27, 2023 at 07:31:19PM +0100, Alvaro Herrera wrote:
> On 2023-Jan-26, Nathan Bossart wrote:
>> - errmsg("permission denied: bootstrap user must be superuser")));
>> + errmsg("permission denied to alter role"),
>> + errdetail("The bootstrap user must be superuser.")));
> I think this one isn't using the right errcode; this is not a case of
> insufficient privileges. There's no priv you can acquire that lets you
> do it. So I'd change it to unsupported operation.
І fixed this in v4. I've also attached a second patch in which I've
adjusted the messages that Peter mentioned upthread.
One thing that feels a bit odd is how some of the DETAILs mention the
operation being attempted while others do not. For example, we have
ERROR: permission denied to drop role
DETAIL: You must have SUPERUSER privilege to drop roles with SUPERUSER.
In this case, the DETAIL explains the action that is prohibited. In other
cases, we have something like
ERROR: permission denied to alter role
DETAIL: You must have CREATEROLE privilege and ADMIN OPTION on role "myrole".
which does not. I think this is okay because adding "to alter the role" to
the end of the DETAIL seems kind of awkward. But in other cases, such as
ERROR: permission denied to use replication slots
DETAIL: You must have REPLICATION privilege.
adding the operation to the end seems less awkward (i.e., "You must have
REPLICATION privilege to use replication slots."). I don't think there's
any information lost by omitting the action in the DETAIL, so perhaps this
is just a stylistic choice. I think I'm inclined to add the action to the
DETAIL whenever it doesn't make the message lengthy and awkward, and leave
it out otherwise. Thoughts?
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