apparmor: move task from common_audit_data to apparmor_audit_data

apparmor is the only LSM that uses the common_audit_data tsk field.
Instead of making all LSMs pay for the stack space move the aa usage into
the apparmor_audit_data.

Signed-off-by: Eric Paris <eparis@redhat.com>

3 files changed, 11 insertions, 3 deletions

diff --git a/security/apparmor/audit.c b/security/apparmor/audit.c
index cc3520d39a78..3ae28db5a64f 100644
--- a/security/apparmor/audit.c
+++ b/security/apparmor/audit.c
@@ -111,7 +111,7 @@ static const char *const aa_audit_type[] = {
 static void audit_pre(struct audit_buffer *ab, void *ca)
 {
         struct common_audit_data *sa = ca;
-        struct task_struct *tsk = sa->tsk ? sa->tsk : current;
+        struct task_struct *tsk = sa->aad->tsk ? sa->aad->tsk : current;
 
         if (aa_g_audit_header) {
                 audit_log_format(ab, "apparmor=");
@@ -149,6 +149,12 @@ static void audit_pre(struct audit_buffer *ab, void *ca)
                 audit_log_format(ab, " name=");
                 audit_log_untrustedstring(ab, sa->aad->name);
         }
+
+        if (sa->aad->tsk) {
+                audit_log_format(ab, " pid=%d comm=", tsk->pid);
+                audit_log_untrustedstring(ab, tsk->comm);
+        }
+
 }
 
 /**
@@ -205,7 +211,8 @@ int aa_audit(int type, struct aa_profile *profile, gfp_t gfp,
         aa_audit_msg(type, sa, cb);
 
         if (sa->aad->type == AUDIT_APPARMOR_KILL)
-                (void)send_sig_info(SIGKILL, NULL, sa->tsk ? sa->tsk : current);
+                (void)send_sig_info(SIGKILL, NULL,
+                                    sa->aad->tsk ?  sa->aad->tsk : current);
 
         if (sa->aad->type == AUDIT_APPARMOR_ALLOWED)
                 return complain_error(sa->aad->error);
diff --git a/security/apparmor/capability.c b/security/apparmor/capability.c
index 3ecb8b7d8502..b66a0e4a5693 100644
--- a/security/apparmor/capability.c
+++ b/security/apparmor/capability.c
@@ -67,8 +67,8 @@ static int audit_caps(struct aa_profile *profile, struct task_struct *task,
         struct apparmor_audit_data aad = {0,};
         COMMON_AUDIT_DATA_INIT(&sa, LSM_AUDIT_DATA_CAP);
         sa.aad = &aad;
-        sa.tsk = task;
         sa.u.cap = cap;
+        sa.aad->tsk = task;
         sa.aad->op = OP_CAPABLE;
         sa.aad->error = error;
 
diff --git a/security/apparmor/include/audit.h b/security/apparmor/include/audit.h
index 3868b1e5d5ba..4b7e18951aea 100644
--- a/security/apparmor/include/audit.h
+++ b/security/apparmor/include/audit.h
@@ -110,6 +110,7 @@ struct apparmor_audit_data {
         void *profile;
         const char *name;
         const char *info;
+        struct task_struct *tsk;
         union {
                 void *target;
                 struct {