Date:   Thu, 20 Apr 2023 14:45:26 +0300
From:   "Konstantin Meskhidze (A)" <konstantin.meskhidze@...wei.com>
To:     Mickaël Salaün <mic@...ikod.net>
CC:     <willemdebruijn.kernel@...il.com>, <gnoack3000@...il.com>,
        <linux-security-module@...r.kernel.org>, <netdev@...r.kernel.org>,
        <netfilter-devel@...r.kernel.org>, <yusongping@...wei.com>,
        <artem.kuzin@...wei.com>
Subject: Re: [PATCH v10 03/13] landlock: Remove unnecessary inlining



4/16/2023 7:09 PM, Mickaël Salaün пишет:
> Unfortunately this patch could not be easily backported because it
> changes too much as the same time, and it would then be an issue for
> patches on top of it that would need to be backported. Please remove
> this patch for the next series, but keep the required changes for the
> function that are modified by the following patches, i.e.
> opportunistically remove inline function when changing their signature
> (which should be a subset of the same patch for v9). I'll take care of
> doing the remaining clean up.

   Ok. I will remove inlining for the functions I deal with.
> 
> 
> On 23/03/2023 09:52, Konstantin Meskhidze wrote:
>> Remove all "inline" keywords in all .c files. This should be simple
>> for the compiler to inline them automatically, and it makes the
>> code cleaner.
>> 
>> Signed-off-by: Konstantin Meskhidze <konstantin.meskhidze@...wei.com>
>> ---
>> 
>> Changes since v9:
>> * Splits commit.
>> 
>> ---
>>   security/landlock/fs.c      | 26 +++++++++++++-------------
>>   security/landlock/ruleset.c |  2 +-
>>   2 files changed, 14 insertions(+), 14 deletions(-)
>> 
>> diff --git a/security/landlock/fs.c b/security/landlock/fs.c
>> index 05a339bf2a7c..b5fa6f56665f 100644
>> --- a/security/landlock/fs.c
>> +++ b/security/landlock/fs.c
>> @@ -191,7 +191,7 @@ int landlock_append_fs_rule(struct landlock_ruleset *const ruleset,
>>    *
>>    * Returns NULL if no rule is found or if @dentry is negative.
>>    */
>> -static inline const struct landlock_rule *
>> +static const struct landlock_rule *
>>   find_rule(const struct landlock_ruleset *const domain,
>>   	  const struct dentry *const dentry)
>>   {
>> @@ -217,7 +217,7 @@ find_rule(const struct landlock_ruleset *const domain,
>>    * Returns true if the request is allowed (i.e. relevant layer masks for the
>>    * request are empty).
>>    */
>> -static inline bool
>> +static bool
>>   unmask_layers(const struct landlock_rule *const rule,
>>   	      const access_mask_t access_request,
>>   	      layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS])
>> @@ -269,7 +269,7 @@ unmask_layers(const struct landlock_rule *const rule,
>>    * sockfs, pipefs), but can still be reachable through
>>    * /proc/<pid>/fd/<file-descriptor>
>>    */
>> -static inline bool is_nouser_or_private(const struct dentry *dentry)
>> +static bool is_nouser_or_private(const struct dentry *dentry)
>>   {
>>   	return (dentry->d_sb->s_flags & SB_NOUSER) ||
>>   	       (d_is_positive(dentry) &&
>> @@ -301,7 +301,7 @@ get_raw_handled_fs_accesses(const struct landlock_ruleset *const domain)
>>    * Returns: An access mask where each access right bit is set which is handled
>>    * in any of the active layers in @domain.
>>    */
>> -static inline access_mask_t
>> +static access_mask_t
>>   init_layer_masks(const struct landlock_ruleset *const domain,
>>   		 const access_mask_t access_request,
>>   		 layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS])
>> @@ -357,7 +357,7 @@ static const struct landlock_ruleset *get_current_fs_domain(void)
>>    *
>>    * @layer_masks_child2: Optional child masks.
>>    */
>> -static inline bool no_more_access(
>> +static bool no_more_access(
>>   	const layer_mask_t (*const layer_masks_parent1)[LANDLOCK_NUM_ACCESS_FS],
>>   	const layer_mask_t (*const layer_masks_child1)[LANDLOCK_NUM_ACCESS_FS],
>>   	const bool child1_is_directory,
>> @@ -409,7 +409,7 @@ static inline bool no_more_access(
>>    *
>>    * Returns true if the request is allowed, false otherwise.
>>    */
>> -static inline bool
>> +static bool
>>   scope_to_request(const access_mask_t access_request,
>>   		 layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS])
>>   {
>> @@ -428,7 +428,7 @@ scope_to_request(const access_mask_t access_request,
>>    * Returns true if there is at least one access right different than
>>    * LANDLOCK_ACCESS_FS_REFER.
>>    */
>> -static inline bool
>> +static bool
>>   is_eacces(const layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS],
>>   	  const access_mask_t access_request)
>>   {
>> @@ -639,9 +639,9 @@ static bool is_access_to_paths_allowed(
>>   	return allowed_parent1 && allowed_parent2;
>>   }
>> 
>> -static inline int check_access_path(const struct landlock_ruleset *const domain,
>> -				    const struct path *const path,
>> -				    access_mask_t access_request)
>> +static int check_access_path(const struct landlock_ruleset *const domain,
>> +			     const struct path *const path,
>> +			     access_mask_t access_request)
>>   {
>>   	layer_mask_t layer_masks[LANDLOCK_NUM_ACCESS_FS] = {};
>> 
>> @@ -662,7 +662,7 @@ static int current_check_access_path(const struct path *const path,
>>   	return check_access_path(dom, path, access_request);
>>   }
>> 
>> -static inline access_mask_t get_mode_access(const umode_t mode)
>> +static access_mask_t get_mode_access(const umode_t mode)
>>   {
>>   	switch (mode & S_IFMT) {
>>   	case S_IFLNK:
>> @@ -687,7 +687,7 @@ static inline access_mask_t get_mode_access(const umode_t mode)
>>   	}
>>   }
>> 
>> -static inline access_mask_t maybe_remove(const struct dentry *const dentry)
>> +static access_mask_t maybe_remove(const struct dentry *const dentry)
>>   {
>>   	if (d_is_negative(dentry))
>>   		return 0;
>> @@ -1171,7 +1171,7 @@ static int hook_path_truncate(const struct path *const path)
>>    * Returns the access rights that are required for opening the given file,
>>    * depending on the file type and open mode.
>>    */
>> -static inline access_mask_t
>> +static access_mask_t
>>   get_required_file_open_access(const struct file *const file)
>>   {
>>   	access_mask_t access = 0;
>> diff --git a/security/landlock/ruleset.c b/security/landlock/ruleset.c
>> index 1f3188b4e313..1f432a809ad5 100644
>> --- a/security/landlock/ruleset.c
>> +++ b/security/landlock/ruleset.c
>> @@ -243,7 +243,7 @@ int landlock_insert_rule(struct landlock_ruleset *const ruleset,
>>   	return insert_rule(ruleset, object, &layers, ARRAY_SIZE(layers));
>>   }
>> 
>> -static inline void get_hierarchy(struct landlock_hierarchy *const hierarchy)
>> +static void get_hierarchy(struct landlock_hierarchy *const hierarchy)
>>   {
>>   	if (hierarchy)
>>   		refcount_inc(&hierarchy->usage);
>> --
>> 2.25.1
>> 
> .

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