linux-kernel - Re: [PATCH] mips: fix shmctl/semctl/msgctl syscall for o32

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Message-Id: <7afff28d-45e0-4e15-bb37-270856403bf7@app.fastmail.com>
Date: Thu, 30 Jan 2025 21:31:52 +0100
From: "Arnd Bergmann" <arnd@...db.de>
To: "Ism Hong" <ism.hong@...il.com>
Cc: "Thomas Bogendoerfer" <tsbogend@...ha.franken.de>,
 "Christian Brauner" <brauner@...nel.org>,
 "Andrew Morton" <akpm@...ux-foundation.org>,
 "Heiko Carstens" <hca@...ux.ibm.com>, "Jeff Xu" <jeffxu@...omium.org>,
 Christian Göttsche <cgzones@...glemail.com>,
 "open list:MIPS" <linux-mips@...r.kernel.org>,
 "open list" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mips: fix shmctl/semctl/msgctl syscall for o32

On Thu, Jan 30, 2025, at 15:46, Ism Hong wrote:
> Arnd Bergmann 於 2025/1/28 清晨5:20 寫道:
>
> Thank you for your explanation, and sorry for the late reply due to the 
> Chinese New Year.
>
>  From your response, I understand that the preferred solution would be 
> to modify uClibc to align the behavior of semctl/shmctl/msgctl with 
> glibc and musl by adopting a unified feature test macro. If that is the 
> case, I will work on preparing a patch for uClibc accordingly.

Yes, that is correct. I think musl doesn't call the separate
syscalls if the architecture provides the old-style socket() syscall,
so it's not affected either way, but glibc needs the revert.

     Arnd