linux-kernel - Re: [PATCH v2] sysctl: drop unused argument set

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Date: Fri, 15 Mar 2024 17:19:03 +0100
From: Joel Granados <j.granados@...sung.com>
To: Thomas Weißschuh <linux@...ssschuh.net>
CC: Luis Chamberlain <mcgrof@...nel.org>, Kees Cook <keescook@...omium.org>,
	"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	<linux-kernel@...r.kernel.org>, <linux-fsdevel@...r.kernel.org>,
	<netdev@...r.kernel.org>
Subject: Re: [PATCH v2] sysctl: drop unused argument set_ownership()::table

On Fri, Mar 15, 2024 at 04:56:54PM +0100, Thomas Weißschuh wrote:
> On 2024-03-15 16:41:34+0100, Joel Granados wrote:
> > Hey Thomas
> > 
> > Did you forget to compile? I'm seeing the following error when I
> > compile:
> 
> Welp...
> 
> >   ...
> >   ../fs/proc/proc_sysctl.c: In function ‘proc_sys_make_inode’:
> >   ../fs/proc/proc_sysctl.c:483:43: error: passing argument 2 of ‘root->set_ownership’ from incompatible pointer type [-Werror=incompatible-pointer-types]
> >     483 |                 root->set_ownership(head, table, &inode->i_uid, &inode->i_gid);
> >         |                                           ^~~~~
> >         |                                           |
> >         |                                           struct ctl_table *
> >   ../fs/proc/proc_sysctl.c:483:43: note: expected ‘kuid_t *’ but argument is of type ‘struct ctl_table *’
> >   ../fs/proc/proc_sysctl.c:483:50: error: passing argument 3 of ‘root->set_ownership’ from incompatible pointer type [-Werror=incompatible-pointer-types]
> >     483 |                 root->set_ownership(head, table, &inode->i_uid, &inode->i_gid);
> >         |                                                  ^~~~~~~~~~~~~
> >         |                                                  |
> >         |                                                  kuid_t *
> >   ../fs/proc/proc_sysctl.c:483:50: note: expected ‘kgid_t *’ but argument is of type ‘kuid_t *’
> >   ../fs/proc/proc_sysctl.c:483:17: error: too many arguments to function ‘root->set_ownership’
> >     483 |                 root->set_ownership(head, table, &inode->i_uid, &inode->i_gid);
> >         |                 ^~~~
> >   cc1: some warnings being treated as errors
> >   make[5]: *** [../scripts/Makefile.build:243: fs/proc/proc_sysctl.o] Error 1
> >     CC      fs/xfs/libxfs/xfs_dir2_node.o
> >   make[5]: *** Waiting for unfinished jobs....
> >   ...
> > 
> > I'm guessing its just a matter of removing the table arg from
> > proc_sys_make_inode?
> 
> Yes, for this error it's correct.
> 
> There are also new implementors of the set_ownership callback in ipc/
> which need to be adapted.
> 
> I'll send a new revision.
Thx. Not sure what your using as a base, but I suggest you use
linux-next so you get al the stuff going into the rc.

best

-- 

Joel Granados

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