Added support for greylisting of system calls.

sandbox/linux/seccomp-bpf/errorcode.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "sandbox/linux/seccomp-bpf/sandbox_bpf.h"
 
 
 namespace playground2 {
 
 ErrorCode::ErrorCode(int err) {
   switch (err) {
   case ERR_ALLOWED:
     err_ = SECCOMP_RET_ALLOW;
     error_type_ = ET_SIMPLE;
     break;
   case ERR_MIN_ERRNO ... ERR_MAX_ERRNO:
     err_ = SECCOMP_RET_ERRNO + err;
     error_type_ = ET_SIMPLE;
     break;
   default:
     SANDBOX_DIE("Invalid use of ErrorCode object");
   }
 }
 
-ErrorCode::ErrorCode(ErrorCode::TrapFnc fnc, const void *aux, uint16_t id)
+ErrorCode::ErrorCode(ErrorCode::TrapFnc fnc, const void *aux, bool safe,
+                     uint16_t id)
     : error_type_(ET_TRAP),
       fnc_(fnc),
       aux_(const_cast<void *>(aux)),
+      safe_(safe),
       err_(SECCOMP_RET_TRAP + id) {
 }
 
 ErrorCode::ErrorCode(int argno, ArgType width, Operation op, uint64_t value,
                      const ErrorCode *passed, const ErrorCode *failed)
     : error_type_(ET_COND),
       value_(value),
       argno_(argno),
       width_(width),
       op_(op),
@@ skipping 55 matching lines @@
       } else {
         return false;
       }
     } else {
       SANDBOX_DIE("Corrupted ErrorCode");
     }
   }
 }
 
 }  // namespace