linux-kernel - Re: [PATCH ghak21 V3 1/2] audit: remove path param from link denied function

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAHC9VhRsNknSgikKF24SdS5bKT_hokKRn2rsFvJ9jon7tiSoPw@mail.gmail.com>
Date:   Tue, 20 Mar 2018 16:05:39 -0400
From:   Paul Moore <paul@...l-moore.com>
To:     Richard Guy Briggs <rgb@...hat.com>
Cc:     Linux-Audit Mailing List <linux-audit@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Eric Paris <eparis@...hat.com>,
        Steve Grubb <sgrubb@...hat.com>,
        Kees Cook <keescook@...omium.org>
Subject: Re: [PATCH ghak21 V3 1/2] audit: remove path param from link denied function

On Wed, Mar 14, 2018 at 1:42 AM, Richard Guy Briggs <rgb@...hat.com> wrote:
> In commit 45b578fe4c3cade6f4ca1fc934ce199afd857edc
> ("audit: link denied should not directly generate PATH record")
> the need for the struct path *link parameter was removed.
> Remove the now useless struct path argument.
>
> Signed-off-by: Richard Guy Briggs <rgb@...hat.com>
> ---
>  fs/namei.c            | 2 +-
>  include/linux/audit.h | 6 ++----
>  kernel/audit.c        | 3 +--
>  3 files changed, 4 insertions(+), 7 deletions(-)
>
> diff --git a/fs/namei.c b/fs/namei.c
> index 9cc91fb..50d2533 100644
> --- a/fs/namei.c
> +++ b/fs/namei.c
> @@ -1011,7 +1011,7 @@ static int may_linkat(struct path *link)
>         if (safe_hardlink_source(inode) || inode_owner_or_capable(inode))
>                 return 0;
>
> -       audit_log_link_denied("linkat", link);
> +       audit_log_link_denied("linkat");
>         return -EPERM;
>  }
>
> diff --git a/include/linux/audit.h b/include/linux/audit.h
> index af410d9..75d5b03 100644
> --- a/include/linux/audit.h
> +++ b/include/linux/audit.h
> @@ -146,8 +146,7 @@ extern void             audit_log_d_path(struct audit_buffer *ab,
>                                              const struct path *path);
>  extern void                audit_log_key(struct audit_buffer *ab,
>                                           char *key);
> -extern void                audit_log_link_denied(const char *operation,
> -                                                 const struct path *link);
> +extern void                audit_log_link_denied(const char *operation);
>  extern void                audit_log_lost(const char *message);
>
>  extern int audit_log_task_context(struct audit_buffer *ab);
> @@ -194,8 +193,7 @@ static inline void audit_log_d_path(struct audit_buffer *ab,
>  { }
>  static inline void audit_log_key(struct audit_buffer *ab, char *key)
>  { }
> -static inline void audit_log_link_denied(const char *string,
> -                                        const struct path *link)
> +static inline void audit_log_link_denied(const char *string)
>  { }
>  static inline int audit_log_task_context(struct audit_buffer *ab)
>  {
> diff --git a/kernel/audit.c b/kernel/audit.c
> index 3f2f143..e8bf8d7 100644
> --- a/kernel/audit.c
> +++ b/kernel/audit.c
> @@ -2308,9 +2308,8 @@ void audit_log_task_info(struct audit_buffer *ab, struct task_struct *tsk)
>  /**
>   * audit_log_link_denied - report a link restriction denial
>   * @operation: specific link operation
> - * @link: the path that triggered the restriction
>   */
> -void audit_log_link_denied(const char *operation, const struct path *link)
> +void audit_log_link_denied(const char *operation)
>  {
>         struct audit_buffer *ab;

*sigh*

You forgot to update may_follow_link().

-- 
paul moore
www.paul-moore.com