[PATCH v8 06/12] landlock: Refactor landlock_add_rule() syscall

[Konstantin Meskhidze (A)]

11/17/2022 9:42 PM, Mickaël Salaün пишет:
> 
> On 21/10/2022 17:26, Konstantin Meskhidze wrote:
>> Modifies landlock_add_rule() syscall to support new rule types in future
> 
> Change the landlock_add_rule() syscall…
> 
   Ok.
> 
>> Landlock versions. Adds add_rule_path_beneath() helper to support
> 
> Add the…

   Got it. Thanks.
> 
>> current filesystem rules.
>> 
>> Signed-off-by: Konstantin Meskhidze <konstantin.meskhidze at huawei.com>
>> ---
>> 
>> Changes since v7:
>> * None
>> 
>> Changes since v6:
>> * None
>> 
>> Changes since v5:
>> * Refactors syscall landlock_add_rule() and add_rule_path_beneath() helper
>> to make argument check ordering consistent and get rid of partial revertings
>> in following patches.
>> * Rolls back refactoring base_test.c seltest.
>> * Formats code with clang-format-14.
>> 
>> Changes since v4:
>> * Refactors add_rule_path_beneath() and landlock_add_rule() functions
>> to optimize code usage.
>> * Refactors base_test.c seltest: adds LANDLOCK_RULE_PATH_BENEATH
>> rule type in landlock_add_rule() call.
>> 
>> Changes since v3:
>> * Split commit.
>> * Refactors landlock_add_rule syscall.
>> 
>> ---
>>   security/landlock/syscalls.c | 92 +++++++++++++++++++-----------------
>>   1 file changed, 48 insertions(+), 44 deletions(-)
>> 
>> diff --git a/security/landlock/syscalls.c b/security/landlock/syscalls.c
>> index 71aca7f990bc..87389d7bfbf2 100644
>> --- a/security/landlock/syscalls.c
>> +++ b/security/landlock/syscalls.c
>> @@ -274,6 +274,47 @@ static int get_path_from_fd(const s32 fd, struct path *const path)
>>   	return err;
>>   }
>> 
>> +static int add_rule_path_beneath(struct landlock_ruleset *const ruleset,
>> +				 const void __user *const rule_attr)
>> +{
>> +	struct landlock_path_beneath_attr path_beneath_attr;
>> +	struct path path;
>> +	int res, err;
>> +	u32 mask;
> 
> access_mask_t mask;

   will be fixed thanks.
> .