When the capset syscall is used it is not possible for audit to record the

[safe/jmp/linux-2.6] / kernel / auditsc.c

diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 3229cd4..cef3423 100644 (file)
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -204,6 +204,12 @@ struct audit_aux_data_bprm_fcaps {
        struct audit_cap_data   new_pcap;
 };
 
+struct audit_aux_data_capset {
+       struct audit_aux_data   d;
+       pid_t                   pid;
+       struct audit_cap_data   cap;
+};
+
 struct audit_tree_refs {
        struct audit_tree_refs *next;
        struct audit_chunk *c[31];
@@ -1397,6 +1403,14 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
                        audit_log_cap(ab, "new_pe", &axs->new_pcap.effective);
                        break; }
 
+               case AUDIT_CAPSET: {
+                       struct audit_aux_data_capset *axs = (void *)aux;
+                       audit_log_format(ab, "pid=%d", axs->pid);
+                       audit_log_cap(ab, "cap_pi", &axs->cap.inheritable);
+                       audit_log_cap(ab, "cap_pp", &axs->cap.permitted);
+                       audit_log_cap(ab, "cap_pe", &axs->cap.effective);
+                       break; }
+
                }
                audit_log_end(ab);
        }
@@ -2570,6 +2584,40 @@ void __audit_log_bprm_fcaps(struct linux_binprm *bprm, kernel_cap_t *pP, kernel_
 }
 
 /**
+ * __audit_log_capset - store information about the arguments to the capset syscall
+ * @pid target pid of the capset call
+ * @eff effective cap set
+ * @inh inheritible cap set
+ * @perm permited cap set
+ *
+ * Record the aguments userspace sent to sys_capset for later printing by the
+ * audit system if applicable
+ */
+int __audit_log_capset(pid_t pid, kernel_cap_t *eff, kernel_cap_t *inh, kernel_cap_t *perm)
+{
+       struct audit_aux_data_capset *ax;
+       struct audit_context *context = current->audit_context;
+
+       if (likely(!audit_enabled || !context || context->dummy))
+               return 0;
+
+       ax = kmalloc(sizeof(*ax), GFP_KERNEL);
+       if (!ax)
+               return -ENOMEM;
+
+       ax->d.type = AUDIT_CAPSET;
+       ax->d.next = context->aux;
+       context->aux = (void *)ax;
+
+       ax->pid = pid;
+       ax->cap.effective = *eff;
+       ax->cap.inheritable = *eff;
+       ax->cap.permitted = *perm;
+
+       return 0;
+}
+
+/**
  * audit_core_dumps - record information about processes that end abnormally
  * @signr: signal value
  *