[RFC,ghak32,V2,07/13] audit: add container aux record to watch/tree/mark

Submitted by Richard Guy Briggs on March 16, 2018, 9 a.m.

Details

Message ID 737f914a88d048b9985984c0ce1f946c30ca374c.1521179281.git.rgb@redhat.com
State New
Series "audit: implement container id"
Headers show

Commit Message

Richard Guy Briggs March 16, 2018, 9 a.m.
Add container ID auxiliary record to mark, watch and tree rule
configuration standalone records.

Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
---
 kernel/audit_fsnotify.c |  5 ++++-
 kernel/audit_tree.c     |  5 ++++-
 kernel/audit_watch.c    | 33 +++++++++++++++++++--------------
 3 files changed, 27 insertions(+), 16 deletions(-)

Patch hide | download patch | download mbox

diff --git a/kernel/audit_fsnotify.c b/kernel/audit_fsnotify.c
index 52f368b..18c110d 100644
--- a/kernel/audit_fsnotify.c
+++ b/kernel/audit_fsnotify.c
@@ -124,10 +124,11 @@  static void audit_mark_log_rule_change(struct audit_fsnotify_mark *audit_mark, c
 {
 	struct audit_buffer *ab;
 	struct audit_krule *rule = audit_mark->rule;
+	struct audit_context *context = audit_alloc_local();
 
 	if (!audit_enabled)
 		return;
-	ab = audit_log_start(NULL, GFP_NOFS, AUDIT_CONFIG_CHANGE);
+	ab = audit_log_start(context, GFP_NOFS, AUDIT_CONFIG_CHANGE);
 	if (unlikely(!ab))
 		return;
 	audit_log_format(ab, "auid=%u ses=%u op=%s",
@@ -138,6 +139,8 @@  static void audit_mark_log_rule_change(struct audit_fsnotify_mark *audit_mark, c
 	audit_log_key(ab, rule->filterkey);
 	audit_log_format(ab, " list=%d res=1", rule->listnr);
 	audit_log_end(ab);
+	audit_log_container_info(context, "config", audit_get_containerid(current));
+	audit_free_context(context);
 }
 
 void audit_remove_mark(struct audit_fsnotify_mark *audit_mark)
diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c
index 67e6956..7c085be 100644
--- a/kernel/audit_tree.c
+++ b/kernel/audit_tree.c
@@ -496,8 +496,9 @@  static int tag_chunk(struct inode *inode, struct audit_tree *tree)
 static void audit_tree_log_remove_rule(struct audit_krule *rule)
 {
 	struct audit_buffer *ab;
+	struct audit_context *context = audit_alloc_local();
 
-	ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE);
+	ab = audit_log_start(context, GFP_KERNEL, AUDIT_CONFIG_CHANGE);
 	if (unlikely(!ab))
 		return;
 	audit_log_format(ab, "op=remove_rule");
@@ -506,6 +507,8 @@  static void audit_tree_log_remove_rule(struct audit_krule *rule)
 	audit_log_key(ab, rule->filterkey);
 	audit_log_format(ab, " list=%d res=1", rule->listnr);
 	audit_log_end(ab);
+	audit_log_container_info(context, "config", audit_get_containerid(current));
+	audit_free_context(context);
 }
 
 static void kill_rules(struct audit_tree *tree)
diff --git a/kernel/audit_watch.c b/kernel/audit_watch.c
index 9eb8b35..60d75a2 100644
--- a/kernel/audit_watch.c
+++ b/kernel/audit_watch.c
@@ -238,20 +238,25 @@  static struct audit_watch *audit_dupe_watch(struct audit_watch *old)
 
 static void audit_watch_log_rule_change(struct audit_krule *r, struct audit_watch *w, char *op)
 {
-	if (audit_enabled) {
-		struct audit_buffer *ab;
-		ab = audit_log_start(NULL, GFP_NOFS, AUDIT_CONFIG_CHANGE);
-		if (unlikely(!ab))
-			return;
-		audit_log_format(ab, "auid=%u ses=%u op=%s",
-				 from_kuid(&init_user_ns, audit_get_loginuid(current)),
-				 audit_get_sessionid(current), op);
-		audit_log_format(ab, " path=");
-		audit_log_untrustedstring(ab, w->path);
-		audit_log_key(ab, r->filterkey);
-		audit_log_format(ab, " list=%d res=1", r->listnr);
-		audit_log_end(ab);
-	}
+	struct audit_buffer *ab;
+	struct audit_context *context = audit_alloc_local();
+
+	if (!audit_enabled)
+		return;
+
+	ab = audit_log_start(context, GFP_NOFS, AUDIT_CONFIG_CHANGE);
+	if (unlikely(!ab))
+		return;
+	audit_log_format(ab, "auid=%u ses=%u op=%s",
+			 from_kuid(&init_user_ns, audit_get_loginuid(current)),
+			 audit_get_sessionid(current), op);
+	audit_log_format(ab, " path=");
+	audit_log_untrustedstring(ab, w->path);
+	audit_log_key(ab, r->filterkey);
+	audit_log_format(ab, " list=%d res=1", r->listnr);
+	audit_log_end(ab);
+	audit_log_container_info(context, "config", audit_get_containerid(current));
+	audit_free_context(context);
 }
 
 /* Update inode info in audit rules based on filesystem event. */

Comments

Paul Moore April 19, 2018, 12:42 a.m.
On Fri, Mar 16, 2018 at 5:00 AM, Richard Guy Briggs <rgb@redhat.com> wrote:
> Add container ID auxiliary record to mark, watch and tree rule
> configuration standalone records.
>
> Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
> ---
>  kernel/audit_fsnotify.c |  5 ++++-
>  kernel/audit_tree.c     |  5 ++++-
>  kernel/audit_watch.c    | 33 +++++++++++++++++++--------------
>  3 files changed, 27 insertions(+), 16 deletions(-)
>
> diff --git a/kernel/audit_fsnotify.c b/kernel/audit_fsnotify.c
> index 52f368b..18c110d 100644
> --- a/kernel/audit_fsnotify.c
> +++ b/kernel/audit_fsnotify.c
> @@ -124,10 +124,11 @@ static void audit_mark_log_rule_change(struct audit_fsnotify_mark *audit_mark, c
>  {
>         struct audit_buffer *ab;
>         struct audit_krule *rule = audit_mark->rule;
> +       struct audit_context *context = audit_alloc_local();
>
>         if (!audit_enabled)
>                 return;

Move the audit_alloc_local() after the audit_enabled check.

> -       ab = audit_log_start(NULL, GFP_NOFS, AUDIT_CONFIG_CHANGE);
> +       ab = audit_log_start(context, GFP_NOFS, AUDIT_CONFIG_CHANGE);
>         if (unlikely(!ab))
>                 return;
>         audit_log_format(ab, "auid=%u ses=%u op=%s",
> @@ -138,6 +139,8 @@ static void audit_mark_log_rule_change(struct audit_fsnotify_mark *audit_mark, c
>         audit_log_key(ab, rule->filterkey);
>         audit_log_format(ab, " list=%d res=1", rule->listnr);
>         audit_log_end(ab);
> +       audit_log_container_info(context, "config", audit_get_containerid(current));
> +       audit_free_context(context);
>  }
>
>  void audit_remove_mark(struct audit_fsnotify_mark *audit_mark)
> diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c
> index 67e6956..7c085be 100644
> --- a/kernel/audit_tree.c
> +++ b/kernel/audit_tree.c
> @@ -496,8 +496,9 @@ static int tag_chunk(struct inode *inode, struct audit_tree *tree)
>  static void audit_tree_log_remove_rule(struct audit_krule *rule)
>  {
>         struct audit_buffer *ab;
> +       struct audit_context *context = audit_alloc_local();

Sort of independent of the audit container ID work, but shouldn't we
have an audit_enabled check here?

> -       ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE);
> +       ab = audit_log_start(context, GFP_KERNEL, AUDIT_CONFIG_CHANGE);
>         if (unlikely(!ab))
>                 return;
>         audit_log_format(ab, "op=remove_rule");
> @@ -506,6 +507,8 @@ static void audit_tree_log_remove_rule(struct audit_krule *rule)
>         audit_log_key(ab, rule->filterkey);
>         audit_log_format(ab, " list=%d res=1", rule->listnr);
>         audit_log_end(ab);
> +       audit_log_container_info(context, "config", audit_get_containerid(current));
> +       audit_free_context(context);
>  }
>
>  static void kill_rules(struct audit_tree *tree)
> diff --git a/kernel/audit_watch.c b/kernel/audit_watch.c
> index 9eb8b35..60d75a2 100644
> --- a/kernel/audit_watch.c
> +++ b/kernel/audit_watch.c
> @@ -238,20 +238,25 @@ static struct audit_watch *audit_dupe_watch(struct audit_watch *old)
>
>  static void audit_watch_log_rule_change(struct audit_krule *r, struct audit_watch *w, char *op)
>  {
> -       if (audit_enabled) {
> -               struct audit_buffer *ab;
> -               ab = audit_log_start(NULL, GFP_NOFS, AUDIT_CONFIG_CHANGE);
> -               if (unlikely(!ab))
> -                       return;
> -               audit_log_format(ab, "auid=%u ses=%u op=%s",
> -                                from_kuid(&init_user_ns, audit_get_loginuid(current)),
> -                                audit_get_sessionid(current), op);
> -               audit_log_format(ab, " path=");
> -               audit_log_untrustedstring(ab, w->path);
> -               audit_log_key(ab, r->filterkey);
> -               audit_log_format(ab, " list=%d res=1", r->listnr);
> -               audit_log_end(ab);
> -       }
> +       struct audit_buffer *ab;
> +       struct audit_context *context = audit_alloc_local();
> +
> +       if (!audit_enabled)
> +               return;

Same as above, do the allocation after the audit_enabled check.

> +       ab = audit_log_start(context, GFP_NOFS, AUDIT_CONFIG_CHANGE);
> +       if (unlikely(!ab))
> +               return;
> +       audit_log_format(ab, "auid=%u ses=%u op=%s",
> +                        from_kuid(&init_user_ns, audit_get_loginuid(current)),
> +                        audit_get_sessionid(current), op);
> +       audit_log_format(ab, " path=");
> +       audit_log_untrustedstring(ab, w->path);
> +       audit_log_key(ab, r->filterkey);
> +       audit_log_format(ab, " list=%d res=1", r->listnr);
> +       audit_log_end(ab);
> +       audit_log_container_info(context, "config", audit_get_containerid(current));
> +       audit_free_context(context);
>  }
Richard Guy Briggs April 19, 2018, 12:24 p.m.
On 2018-04-18 20:42, Paul Moore wrote:
> On Fri, Mar 16, 2018 at 5:00 AM, Richard Guy Briggs <rgb@redhat.com> wrote:
> > Add container ID auxiliary record to mark, watch and tree rule
> > configuration standalone records.
> >
> > Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
> > ---
> >  kernel/audit_fsnotify.c |  5 ++++-
> >  kernel/audit_tree.c     |  5 ++++-
> >  kernel/audit_watch.c    | 33 +++++++++++++++++++--------------
> >  3 files changed, 27 insertions(+), 16 deletions(-)
> >
> > diff --git a/kernel/audit_fsnotify.c b/kernel/audit_fsnotify.c
> > index 52f368b..18c110d 100644
> > --- a/kernel/audit_fsnotify.c
> > +++ b/kernel/audit_fsnotify.c
> > @@ -124,10 +124,11 @@ static void audit_mark_log_rule_change(struct audit_fsnotify_mark *audit_mark, c
> >  {
> >         struct audit_buffer *ab;
> >         struct audit_krule *rule = audit_mark->rule;
> > +       struct audit_context *context = audit_alloc_local();
> >
> >         if (!audit_enabled)
> >                 return;
> 
> Move the audit_alloc_local() after the audit_enabled check.

Already fixed in V3 as previously warned, by making all
AUDIT_CONFIG_CHANGE records SYSCALL auxiliary records.

> > -       ab = audit_log_start(NULL, GFP_NOFS, AUDIT_CONFIG_CHANGE);
> > +       ab = audit_log_start(context, GFP_NOFS, AUDIT_CONFIG_CHANGE);
> >         if (unlikely(!ab))
> >                 return;
> >         audit_log_format(ab, "auid=%u ses=%u op=%s",
> > @@ -138,6 +139,8 @@ static void audit_mark_log_rule_change(struct audit_fsnotify_mark *audit_mark, c
> >         audit_log_key(ab, rule->filterkey);
> >         audit_log_format(ab, " list=%d res=1", rule->listnr);
> >         audit_log_end(ab);
> > +       audit_log_container_info(context, "config", audit_get_containerid(current));
> > +       audit_free_context(context);
> >  }
> >
> >  void audit_remove_mark(struct audit_fsnotify_mark *audit_mark)
> > diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c
> > index 67e6956..7c085be 100644
> > --- a/kernel/audit_tree.c
> > +++ b/kernel/audit_tree.c
> > @@ -496,8 +496,9 @@ static int tag_chunk(struct inode *inode, struct audit_tree *tree)
> >  static void audit_tree_log_remove_rule(struct audit_krule *rule)
> >  {
> >         struct audit_buffer *ab;
> > +       struct audit_context *context = audit_alloc_local();
> 
> Sort of independent of the audit container ID work, but shouldn't we
> have an audit_enabled check here?

Same.

> > -       ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE);
> > +       ab = audit_log_start(context, GFP_KERNEL, AUDIT_CONFIG_CHANGE);
> >         if (unlikely(!ab))
> >                 return;
> >         audit_log_format(ab, "op=remove_rule");
> > @@ -506,6 +507,8 @@ static void audit_tree_log_remove_rule(struct audit_krule *rule)
> >         audit_log_key(ab, rule->filterkey);
> >         audit_log_format(ab, " list=%d res=1", rule->listnr);
> >         audit_log_end(ab);
> > +       audit_log_container_info(context, "config", audit_get_containerid(current));
> > +       audit_free_context(context);
> >  }
> >
> >  static void kill_rules(struct audit_tree *tree)
> > diff --git a/kernel/audit_watch.c b/kernel/audit_watch.c
> > index 9eb8b35..60d75a2 100644
> > --- a/kernel/audit_watch.c
> > +++ b/kernel/audit_watch.c
> > @@ -238,20 +238,25 @@ static struct audit_watch *audit_dupe_watch(struct audit_watch *old)
> >
> >  static void audit_watch_log_rule_change(struct audit_krule *r, struct audit_watch *w, char *op)
> >  {
> > -       if (audit_enabled) {
> > -               struct audit_buffer *ab;
> > -               ab = audit_log_start(NULL, GFP_NOFS, AUDIT_CONFIG_CHANGE);
> > -               if (unlikely(!ab))
> > -                       return;
> > -               audit_log_format(ab, "auid=%u ses=%u op=%s",
> > -                                from_kuid(&init_user_ns, audit_get_loginuid(current)),
> > -                                audit_get_sessionid(current), op);
> > -               audit_log_format(ab, " path=");
> > -               audit_log_untrustedstring(ab, w->path);
> > -               audit_log_key(ab, r->filterkey);
> > -               audit_log_format(ab, " list=%d res=1", r->listnr);
> > -               audit_log_end(ab);
> > -       }
> > +       struct audit_buffer *ab;
> > +       struct audit_context *context = audit_alloc_local();
> > +
> > +       if (!audit_enabled)
> > +               return;
> 
> Same as above, do the allocation after the audit_enabled check.

Same.

> > +       ab = audit_log_start(context, GFP_NOFS, AUDIT_CONFIG_CHANGE);
> > +       if (unlikely(!ab))
> > +               return;
> > +       audit_log_format(ab, "auid=%u ses=%u op=%s",
> > +                        from_kuid(&init_user_ns, audit_get_loginuid(current)),
> > +                        audit_get_sessionid(current), op);
> > +       audit_log_format(ab, " path=");
> > +       audit_log_untrustedstring(ab, w->path);
> > +       audit_log_key(ab, r->filterkey);
> > +       audit_log_format(ab, " list=%d res=1", r->listnr);
> > +       audit_log_end(ab);
> > +       audit_log_container_info(context, "config", audit_get_containerid(current));
> > +       audit_free_context(context);
> >  }
> 
> -- 
> paul moore
> www.paul-moore.com

- RGB

--
Richard Guy Briggs <rgb@redhat.com>
Sr. S/W Engineer, Kernel Security, Base Operating Systems
Remote, Ottawa, Red Hat Canada
IRC: rgb, SunRaycer
Voice: +1.647.777.2635, Internal: (81) 32635