[PATCH v6 02/17] landlock: refactors landlock_find/insert_rule

[Mickaël Salaün]

On 21/06/2022 10:22, Konstantin Meskhidze wrote:
> Adds a new object union to support a socket port
> rule type. Refactors landlock_insert_rule() and
> landlock_find_rule() to support coming network
> modifications. Now adding or searching a rule
> in a ruleset depends on a rule_type argument
> provided in refactored functions mentioned above.
> 
> Signed-off-by: Konstantin Meskhidze <konstantin.meskhidze at huawei.com>
> ---
> 
> Changes since v5:
> * Formats code with clang-format-14.
> 
> Changes since v4:
> * Refactors insert_rule() and create_rule() functions by deleting
> rule_type from their arguments list, it helps to reduce useless code.
> 
> Changes since v3:
> * Splits commit.
> * Refactors landlock_insert_rule and landlock_find_rule functions.
> * Rename new_ruleset->root_inode.
> 
> ---
>   security/landlock/fs.c      |   7 ++-
>   security/landlock/ruleset.c | 105 ++++++++++++++++++++++++++----------
>   security/landlock/ruleset.h |  27 +++++-----
>   3 files changed, 96 insertions(+), 43 deletions(-)

[...]

> diff --git a/security/landlock/ruleset.h b/security/landlock/ruleset.h
> index bd7ab39859bf..a22d132c32a7 100644
> --- a/security/landlock/ruleset.h
> +++ b/security/landlock/ruleset.h
> @@ -53,15 +53,17 @@ struct landlock_rule {
>   	 */
>   	struct rb_node node;
>   	/**
> -	 * @object: Pointer to identify a kernel object (e.g. an inode).  This
> -	 * is used as a key for this ruleset element.  This pointer is set once
> -	 * and never modified.  It always points to an allocated object because
> -	 * each rule increments the refcount of its object.
> -	 */
> -	struct landlock_object *object;
> -	/**
> -	 * @num_layers: Number of entries in @layers.
> +	 * @object: A union to identify either a kernel object (e.g. an inode) or
> +	 * a raw data value (e.g. a network socket port). This is used as a key
> +	 * for this ruleset element. This pointer/@object.ptr/ is set once and
> +	 * never modified. It always points to an allocated object because each
> +	 * rule increments the refcount of its object (for inodes).;

Extra ";"