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Wythe" , mptcp@lists.linux.dev, Jakub Kicinski , Vasily Gorbik , Paolo Abeni , coreteam@netfilter.org, Jan Karcher , Alexander Aring , Will Deacon , Stefan Schmidt , Matthieu Baerts , bridge@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, Joerg Reuter , Julian Anastasov , David Ahern , netfilter-devel@vger.kernel.org, Wen Gu , linux-kernel@vger.kernel.org, Santosh Shilimkar , linux-wpan@vger.kernel.org, lvs-devel@vger.kernel.org, Karsten Graul , Miquel Raynal , Herbert Xu , linux-sctp@vger.kernel.org, Tony Lu , Pablo Neira Ayuso , Ralf Baechle , Florian Westphal , willy@infradead.org, Heiko Carstens , "David S. Miller" , linux-rdma@vger.kernel.org, Roopa Prabhu , Alexander Gordeev , Simon Horman , Mat Martineau , josh@joshtriplett.org, Christian Borntraeger , Eric Dumazet , linux-hams@vger.kernel.org, Wenjia Zhang , linux-fsdevel@vger.kernel.org, linux-s390@vger.kernel.org, Xin Long , Nikolay Aleksandrov , netdev@vger.kernel.org, rds-devel@oss.oracle.com, Joel Granados Subject: [PATCH v2 04/14] sysctl: Add size argument to init_header Date: Mon, 31 Jul 2023 09:17:18 +0200 Message-Id: <20230731071728.3493794-5-j.granados@samsung.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230731071728.3493794-1-j.granados@samsung.com> References: <20230731071728.3493794-1-j.granados@samsung.com> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1772925165561502630 X-GMAIL-MSGID: 1772925165561502630 In this commit, we add a table_size argument to the init_header function in order to initialize the ctl_table_size variable in ctl_table_header. Even though the size is not yet used, it is now initialized within the sysctl subsys. We need this commit for when we start adding the table_size arguments to the sysctl functions (e.g. register_sysctl, __register_sysctl_table and __register_sysctl_init). Note that in __register_sysctl_table we temporarily use a calculated size until we add the size argument to that function in subsequent commits. Signed-off-by: Joel Granados --- fs/proc/proc_sysctl.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c index 884460b0385b..fa1438f1a355 100644 --- a/fs/proc/proc_sysctl.c +++ b/fs/proc/proc_sysctl.c @@ -188,9 +188,10 @@ static void erase_entry(struct ctl_table_header *head, struct ctl_table *entry) static void init_header(struct ctl_table_header *head, struct ctl_table_root *root, struct ctl_table_set *set, - struct ctl_node *node, struct ctl_table *table) + struct ctl_node *node, struct ctl_table *table, size_t table_size) { head->ctl_table = table; + head->ctl_table_size = table_size; head->ctl_table_arg = table; head->used = 0; head->count = 1; @@ -973,7 +974,7 @@ static struct ctl_dir *new_dir(struct ctl_table_set *set, memcpy(new_name, name, namelen); table[0].procname = new_name; table[0].mode = S_IFDIR|S_IRUGO|S_IXUGO; - init_header(&new->header, set->dir.header.root, set, node, table); + init_header(&new->header, set->dir.header.root, set, node, table, 1); return new; } @@ -1197,7 +1198,8 @@ static struct ctl_table_header *new_links(struct ctl_dir *dir, struct ctl_table_ link_name += len; link++; } - init_header(links, dir->header.root, dir->header.set, node, link_table); + init_header(links, dir->header.root, dir->header.set, node, link_table, + head->ctl_table_size); links->nreg = nr_entries; return links; @@ -1372,7 +1374,7 @@ struct ctl_table_header *__register_sysctl_table( return NULL; node = (struct ctl_node *)(header + 1); - init_header(header, root, set, node, table); + init_header(header, root, set, node, table, nr_entries); if (sysctl_check_table(path, header)) goto fail; @@ -1537,7 +1539,7 @@ void setup_sysctl_set(struct ctl_table_set *set, { memset(set, 0, sizeof(*set)); set->is_seen = is_seen; - init_header(&set->dir.header, root, set, NULL, root_table); + init_header(&set->dir.header, root, set, NULL, root_table, 1); } void retire_sysctl_set(struct ctl_table_set *set)