linux-kernel - Re: [PATCH] treewide: const qualify ctl

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Message-ID: <20250109155154.GP1306365@frogsfrogsfrogs>
Date: Thu, 9 Jan 2025 07:51:54 -0800
From: "Darrick J. Wong" <djwong@...nel.org>
To: Joel Granados <joel.granados@...nel.org>
Cc: Thomas Weißschuh <linux@...ssschuh.net>,
	Kees Cook <kees@...nel.org>, Luis Chamberlain <mcgrof@...nel.org>,
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Subject: Re: [PATCH] treewide: const qualify ctl_tables where applicable

On Thu, Jan 09, 2025 at 02:16:39PM +0100, Joel Granados wrote:
> Add the const qualifier to all the ctl_tables in the tree except the
> ones in ./net dir. The "net" sysctl code is special as it modifies the
> arrays before passing it on to the registration function.
> 
> Constifying ctl_table structs will prevent the modification of
> proc_handler function pointers as the arrays would reside in .rodata.
> This is made possible after commit 78eb4ea25cd5 ("sysctl: treewide:
> constify the ctl_table argument of proc_handlers") constified all the
> proc_handlers.

Sounds like a good idea,
Reviewed-by: "Darrick J. Wong" <djwong@...nel.org> # xfs

--D