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Date: Tue, 29 Jun 2021 16:10:15 -0400
From: Rich Felker <dalias@...c.org>
To: Alexey Kodanev <aleksei.kodanev@...l-sw.com>
Cc: musl@...ts.openwall.com
Subject: Re: [PATCH] nice: return EPERM instead of EACCES

On Tue, Jun 29, 2021 at 06:45:42PM +0300, Alexey Kodanev wrote:
> On 29.06.2021 17:48, Rich Felker wrote:
> > Is there actually an issue here? setpriority is specified to fail with
> > EACCES already for this case; EPERM is only specified for targeting
> > other processes you don't have permission to target. Is Linux getting
> > this wrong for setpriority?
> 
> No, it's fine for setpriority(), it just seems wrong for nice()
> to return EACCES in this case.
> 
> LTP/nice04 test (setting nice(-10)) is failing with musl and POSIX
> indeed says that the errno should be EPERM, for nice().

Oh, sorry, I read it backwards and was thinking it was replacing EPERM
with EACCES. Indeed nice is supposed to return EPERM where setpriority
would return EACCES so I think this patch is correct.

Rich

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