shell linux_sandbox: fix SandboxSIGSYSHandler on arm64

services/shell/runner/host/linux_sandbox.cc

 // Copyright 2015 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 "services/shell/runner/host/linux_sandbox.h"
 
 #include <fcntl.h>
 #include <sys/syscall.h>
 #include <utility>
 
@@ skipping 20 matching lines @@
 namespace shell {
 
 namespace {
 
 intptr_t SandboxSIGSYSHandler(const struct sandbox::arch_seccomp_data& args,
                               void* aux) {
   RAW_CHECK(aux);
   const sandbox::syscall_broker::BrokerProcess* broker_process =
       static_cast<const sandbox::syscall_broker::BrokerProcess*>(aux);
   switch (args.nr) {
+#if defined(__NR_access)
     case __NR_access:
       return broker_process->Access(reinterpret_cast<const char*>(args.args[0]),
                                     static_cast<int>(args.args[1]));
+#endif
+#if defined(__NR_open)
     case __NR_open:
       return broker_process->Open(reinterpret_cast<const char*>(args.args[0]),
                                   static_cast<int>(args.args[1]));
+#endif
     case __NR_faccessat:
       if (static_cast<int>(args.args[0]) == AT_FDCWD) {
         return broker_process->Access(
             reinterpret_cast<const char*>(args.args[1]),
             static_cast<int>(args.args[2]));
       } else {
         return -EPERM;
       }
     case __NR_openat:
       // Allow using openat() as open().
@@ skipping 101 matching lines @@
   sandbox::syscall_broker::BrokerProcess* leaked_broker = broker_.release();
   ALLOW_UNUSED_LOCAL(leaked_broker);
   ANNOTATE_LEAKING_OBJECT_PTR(leaked_broker);
 }
 
 void LinuxSandbox::Seal() {
   proc_fd_.reset();
 }
 
 }  // namespace shell