linux-kernel - Re: [PATCH] apparmor: use designated initializers

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Date:   Fri, 16 Dec 2016 18:01:27 -0800
From:   John Johansen <john.johansen@...onical.com>
To:     Kees Cook <keescook@...omium.org>, linux-kernel@...r.kernel.org
Cc:     James Morris <james.l.morris@...cle.com>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        linux-security-module@...r.kernel.org
Subject: Re: [PATCH] apparmor: use designated initializers

On 12/16/2016 05:04 PM, Kees Cook wrote:
> Prepare to mark sensitive kernel structures for randomization by making
> sure they're using designated initializers. These were identified during
> allyesconfig builds of x86, arm, and arm64, with most initializer fixes
> extracted from grsecurity.
> 
> Signed-off-by: Kees Cook <keescook@...omium.org>
Acked-by: John Johansen <john.johansen@...onical.com>

I'll pull this in to my tree for the pull request I will be sending in
a couple weeks.

> ---
>  security/apparmor/file.c | 4 ++--
>  security/apparmor/lsm.c  | 6 +++---
>  2 files changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/security/apparmor/file.c b/security/apparmor/file.c
> index 4d2af4b01033..608971ac6781 100644
> --- a/security/apparmor/file.c
> +++ b/security/apparmor/file.c
> @@ -349,8 +349,8 @@ static inline bool xindex_is_subset(u32 link, u32 target)
>  int aa_path_link(struct aa_profile *profile, struct dentry *old_dentry,
>  		 const struct path *new_dir, struct dentry *new_dentry)
>  {
> -	struct path link = { new_dir->mnt, new_dentry };
> -	struct path target = { new_dir->mnt, old_dentry };
> +	struct path link = { .mnt = new_dir->mnt, .dentry = new_dentry };
> +	struct path target = { .mnt = new_dir->mnt, .dentry = old_dentry };
>  	struct path_cond cond = {
>  		d_backing_inode(old_dentry)->i_uid,
>  		d_backing_inode(old_dentry)->i_mode
> diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c
> index 41b8cb115801..83b2ab5c9d08 100644
> --- a/security/apparmor/lsm.c
> +++ b/security/apparmor/lsm.c
> @@ -176,7 +176,7 @@ static int common_perm_dir_dentry(int op, const struct path *dir,
>  				  struct dentry *dentry, u32 mask,
>  				  struct path_cond *cond)
>  {
> -	struct path path = { dir->mnt, dentry };
> +	struct path path = { .mnt = dir->mnt, .dentry = dentry };
>  
>  	return common_perm(op, &path, mask, cond);
>  }
> @@ -306,8 +306,8 @@ static int apparmor_path_rename(const struct path *old_dir, struct dentry *old_d
>  
>  	profile = aa_current_profile();
>  	if (!unconfined(profile)) {
> -		struct path old_path = { old_dir->mnt, old_dentry };
> -		struct path new_path = { new_dir->mnt, new_dentry };
> +		struct path old_path = { .mnt = old_dir->mnt, .dentry = old_dentry };
> +		struct path new_path = { .mnt = new_dir->mnt, .dentry = new_dentry };
>  		struct path_cond cond = { d_backing_inode(old_dentry)->i_uid,
>  					  d_backing_inode(old_dentry)->i_mode
>  		};
>