From: Joel Granados <joel.granados@gmail.com>
To: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Cc: Wen Gu <guwen@linux.alibaba.com>,
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>,
Pablo Neira Ayuso <pablo@netfilter.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Nikolay Aleksandrov <razor@blackwall.org>,
Alexander Aring <alex.aring@gmail.com>,
linux-sctp@vger.kernel.org,
Miquel Raynal <miquel.raynal@bootlin.com>,
Jan Karcher <jaka@linux.ibm.com>,
Mat Martineau <martineau@kernel.org>,
Will Deacon <will@kernel.org>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Stefan Schmidt <stefan@datenfreihafen.org>,
Steffen Klassert <steffen.klassert@secunet.com>,
linux-s390@vger.kernel.org, rds-devel@oss.oracle.com,
Xin Long <lucien.xin@gmail.com>,
Herbert Xu <herbert@gondor.apana.org.au>,
linux-rdma@vger.kernel.org, Tony Lu <tonylu@linux.alibaba.com>,
bridge@lists.linux-foundation.org, willy@infradead.org,
Jozsef Kadlecsik <kadlec@netfilter.org>,
lvs-devel@vger.kernel.org, Julian Anastasov <ja@ssi.bg>,
coreteam@netfilter.org, Roopa Prabhu <roopa@nvidia.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Joerg Reuter <jreuter@yaina.de>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Kees Cook <keescook@chromium.org>,
Vasily Gorbik <gor@linux.ibm.com>,
Heiko Carstens <hca@linux.ibm.com>,
Santosh Shilimkar <santosh.shilimkar@oracle.com>,
josh@joshtriplett.org, Wenjia Zhang <wenjia@linux.ibm.com>,
Simon Horman <horms@verge.net.au>,
linux-hams@vger.kernel.org, mptcp@lists.linux.dev,
linux-arm-kernel@lists.infradead.org,
Iurii Zaikin <yzaikin@google.com>,
Eric Dumazet <edumazet@google.com>,
netdev@vger.kernel.org, David Ahern <dsahern@kernel.org>,
Florian Westphal <fw@strlen.de>,
linux-kernel@vger.kernel.org, Ralf Baechle <ralf@linux-mips.org>,
"David S. Miller" <davem@davemloft.net>,
mcgrof@kernel.org, netfilter-devel@vger.kernel.org,
Sven Schnelle <svens@linux.ibm.com>,
"D. Wythe" <alibuda@linux.alibaba.com>,
linux-fsdevel@vger.kernel.org,
Matthieu Baerts <matthieu.baerts@tessares.net>,
linux-wpan@vger.kernel.org, Karsten Graul <kgraul@linux.ibm.com>
Subject: Re: [Bridge] [PATCH v2 11/14] networking: Update to register_net_sysctl_sz
Date: Tue, 8 Aug 2023 17:23:38 +0200 [thread overview]
Message-ID: <20230808152338.aoubpvauxpcuwfuz@localhost> (raw)
In-Reply-To: <22e0e672-f9f6-6afe-6ce6-63de264e7b6d@intel.com>
[-- Attachment #1: Type: text/plain, Size: 2217 bytes --]
On Tue, Aug 08, 2023 at 01:20:36PM +0200, Przemek Kitszel wrote:
> On 7/31/23 09:17, Joel Granados wrote:
> > Move from register_net_sysctl to register_net_sysctl_sz for all the
> > networking related files. Do this while making sure to mirror the NULL
> > assignments with a table_size of zero for the unprivileged users.
> >
> > We need to move to the new function in preparation for when we change
> > SIZE_MAX to ARRAY_SIZE() in the register_net_sysctl macro. Failing to do
> > so would erroneously allow ARRAY_SIZE() to be called on a pointer. We
> > hold off the SIZE_MAX to ARRAY_SIZE change until we have migrated all
> > the relevant net sysctl registering functions to register_net_sysctl_sz
> > in subsequent commits.
> >
> > An additional size function was added to the following files in order to
> > calculate the size of an array that is defined in another file:
> > include/net/ipv6.h
> > net/ipv6/icmp.c
> > net/ipv6/route.c
...
> > diff --git a/net/ipv6/route.c b/net/ipv6/route.c
> > index 64e873f5895f..51c6cdae8723 100644
> > --- a/net/ipv6/route.c
> > +++ b/net/ipv6/route.c
> > @@ -6447,14 +6447,19 @@ struct ctl_table * __net_init ipv6_route_sysctl_init(struct net *net)
> > table[8].data = &net->ipv6.sysctl.ip6_rt_min_advmss;
> > table[9].data = &net->ipv6.sysctl.ip6_rt_gc_min_interval;
> > table[10].data = &net->ipv6.sysctl.skip_notify_on_dev_down;
> > -
> > - /* Don't export sysctls to unprivileged users */
> > - if (net->user_ns != &init_user_ns)
> > - table[1].procname = NULL;
Here I remove the setting of the procname to NULL for ipv6 sysctl
registers in route.c and I do not replace that assignment anywhere.
This means that we will export sysctls to unprivilged users for ipv6.
I'll correct this in V3.
> > }
> > return table;
> > }
> > +
> > +size_t ipv6_route_sysctl_table_size(struct net *net)
> > +{
> > + /* Don't export sysctls to unprivileged users */
> > + if (net->user_ns != &init_user_ns)
> > + return 0;
> > +
> > + return ARRAY_SIZE(ipv6_route_table_template);
> > +}
> > #endif
> > static int __net_init ip6_route_net_init(struct net *net)
--
Joel Granados
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 659 bytes --]
next prev parent reply other threads:[~2023-08-08 15:23 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-31 7:17 [Bridge] [PATCH v2 00/14] sysctl: Add a size argument to register functions in sysctl Joel Granados
2023-07-31 7:17 ` [Bridge] [PATCH v2 01/14] sysctl: Prefer ctl_table_header in proc_sysctl Joel Granados
2023-07-31 7:17 ` [Bridge] [PATCH v2 02/14] sysctl: Use ctl_table_header in list_for_each_table_entry Joel Granados
2023-07-31 7:17 ` [Bridge] [PATCH v2 03/14] sysctl: Add ctl_table_size to ctl_table_header Joel Granados
2023-07-31 18:30 ` Simon Horman
2023-07-31 19:07 ` Simon Horman
2023-08-01 10:03 ` Joel Granados
2023-07-31 7:17 ` [Bridge] [PATCH v2 04/14] sysctl: Add size argument to init_header Joel Granados
2023-07-31 7:17 ` [Bridge] [PATCH v2 05/14] sysctl: Add a size arg to __register_sysctl_table Joel Granados
2023-07-31 7:17 ` [Bridge] [PATCH v2 06/14] sysctl: Add size to register_sysctl Joel Granados
2023-07-31 7:17 ` [Bridge] [PATCH v2 07/14] sysctl: Add size arg to __register_sysctl_init Joel Granados
2023-07-31 7:17 ` [Bridge] [PATCH v2 08/14] sysctl: Add size to register_net_sysctl function Joel Granados
2023-07-31 7:17 ` [Bridge] [PATCH v2 09/14] ax.25: Update to register_net_sysctl_sz Joel Granados
2023-07-31 7:17 ` [Bridge] [PATCH v2 10/14] netfilter: " Joel Granados
2023-08-01 6:11 ` Julian Anastasov
2023-07-31 7:17 ` [Bridge] [PATCH v2 11/14] networking: " Joel Granados
2023-08-08 11:20 ` Przemek Kitszel
2023-08-08 14:24 ` Joel Granados
2023-08-08 15:23 ` Joel Granados [this message]
2023-07-31 7:17 ` [Bridge] [PATCH v2 12/14] vrf: " Joel Granados
2023-07-31 7:17 ` [Bridge] [PATCH v2 13/14] sysctl: SIZE_MAX->ARRAY_SIZE in register_net_sysctl Joel Granados
2023-07-31 7:17 ` [Bridge] [PATCH v2 14/14] sysctl: Use ctl_table_size as stopping criteria for list macro Joel Granados
2023-07-31 20:50 ` [Bridge] [PATCH v2 00/14] sysctl: Add a size argument to register functions in sysctl Luis Chamberlain
2023-08-01 10:01 ` Joel Granados
2023-07-31 21:36 ` Luis Chamberlain
2023-08-01 9:35 ` Joel Granados
2023-08-07 21:44 ` Luis Chamberlain
2023-08-07 23:00 ` Chris Maness
2023-08-07 23:43 ` Luis Chamberlain
2023-08-08 2:50 ` Chris Maness
2023-08-08 3:00 ` Luis Chamberlain
2023-08-08 3:07 ` Chris Maness
2023-08-08 13:59 ` Joel Granados
2023-08-08 13:58 ` Joel Granados
2023-08-08 2:09 ` Jakub Kicinski
2023-08-08 2:34 ` Luis Chamberlain
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20230808152338.aoubpvauxpcuwfuz@localhost \
--to=joel.granados@gmail.com \
--cc=agordeev@linux.ibm.com \
--cc=alex.aring@gmail.com \
--cc=alibuda@linux.alibaba.com \
--cc=borntraeger@linux.ibm.com \
--cc=bridge@lists.linux-foundation.org \
--cc=catalin.marinas@arm.com \
--cc=coreteam@netfilter.org \
--cc=davem@davemloft.net \
--cc=dsahern@kernel.org \
--cc=edumazet@google.com \
--cc=fw@strlen.de \
--cc=gor@linux.ibm.com \
--cc=guwen@linux.alibaba.com \
--cc=hca@linux.ibm.com \
--cc=herbert@gondor.apana.org.au \
--cc=horms@verge.net.au \
--cc=ja@ssi.bg \
--cc=jaka@linux.ibm.com \
--cc=josh@joshtriplett.org \
--cc=jreuter@yaina.de \
--cc=kadlec@netfilter.org \
--cc=keescook@chromium.org \
--cc=kgraul@linux.ibm.com \
--cc=kuba@kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-hams@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rdma@vger.kernel.org \
--cc=linux-s390@vger.kernel.org \
--cc=linux-sctp@vger.kernel.org \
--cc=linux-wpan@vger.kernel.org \
--cc=lucien.xin@gmail.com \
--cc=lvs-devel@vger.kernel.org \
--cc=marcelo.leitner@gmail.com \
--cc=martineau@kernel.org \
--cc=matthieu.baerts@tessares.net \
--cc=mcgrof@kernel.org \
--cc=miquel.raynal@bootlin.com \
--cc=mptcp@lists.linux.dev \
--cc=netdev@vger.kernel.org \
--cc=netfilter-devel@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=pablo@netfilter.org \
--cc=przemyslaw.kitszel@intel.com \
--cc=ralf@linux-mips.org \
--cc=razor@blackwall.org \
--cc=rds-devel@oss.oracle.com \
--cc=roopa@nvidia.com \
--cc=santosh.shilimkar@oracle.com \
--cc=stefan@datenfreihafen.org \
--cc=steffen.klassert@secunet.com \
--cc=svens@linux.ibm.com \
--cc=tonylu@linux.alibaba.com \
--cc=wenjia@linux.ibm.com \
--cc=will@kernel.org \
--cc=willy@infradead.org \
--cc=yzaikin@google.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).