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sysctl: Add size to register_sysctl

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This commit adds table_size to register_sysctl in preparation for the
removal of the sentinel elements in the ctl_table arrays (last empty
markers). And though we do *not* remove any sentinels in this commit, we
set things up by either passing the table_size explicitly or using
ARRAY_SIZE on the ctl_table arrays.

We replace the register_syctl function with a macro that will add the
ARRAY_SIZE to the new register_sysctl_sz function. In this way the
callers that are already using an array of ctl_table structs do not
change. For the callers that pass a ctl_table array pointer, we pass the
table_size to register_sysctl_sz instead of the macro.

Signed-off-by: Joel Granados <j.granados@samsung.com>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
This commit is contained in:
Joel Granados 2023-08-09 12:49:58 +02:00 • committed by Luis Chamberlain
parent bff97cf11b
commit 9edbfe92a0
6 changed files with 28 additions and 20 deletions
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2
net/sysctl_net.c
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@ -101,7 +101,7 @@ __init int net_sysctl_init(void)
* registering "/proc/sys/net" as an empty directory not in a
* network namespace.
*/
net_header = register_sysctl("net", empty);
net_header = register_sysctl_sz("net", empty, 0);
if (!net_header)
goto out;
ret = register_pernet_subsys(&sysctl_pernet_ops);