Refactored ErrorCode into it's own class

sandbox/linux/seccomp-bpf/demo.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 <errno.h>
 #include <fcntl.h>
 #include <linux/unistd.h>
 #include <netinet/in.h>
 #include <netinet/tcp.h>
 #include <netinet/udp.h>
@@ skipping 10 matching lines @@
 #include <sys/shm.h>
 #include <sys/socket.h>
 #include <sys/time.h>
 #include <sys/types.h>
 #include <time.h>
 #include <unistd.h>
 
 #include "sandbox/linux/seccomp-bpf/sandbox_bpf.h"
 #include "sandbox/linux/seccomp-bpf/util.h"
 
+using playground2::ErrorCode;
 using playground2::Sandbox;
 using playground2::Util;
 
 #define ERR EPERM
 
 // We don't expect our sandbox to do anything useful yet. So, we will fail
 // almost immediately. For now, force the code to continue running. The
 // following line should be removed as soon as the sandbox is starting to
 // actually enforce restrictions in a meaningful way:
 #define _exit(x) do { } while (0)
@@ skipping 87 matching lines @@
 
   ptr = strrchr(ptr, '\000');
   strncat(ptr, msg1, sizeof(buf) - (ptr - buf));
 
   ptr = strrchr(ptr, '\000');
   if (HANDLE_EINTR(write(2, buf, ptr - buf))) { }
 
   return -ERR;
 }
 
-static Sandbox::ErrorCode evaluator(int sysno) {
+static ErrorCode evaluator(int sysno) {
   switch (sysno) {
   #if defined(__NR_accept)
     case __NR_accept: case __NR_accept4:
 #endif
     case __NR_alarm:
     case __NR_brk:
     case __NR_clock_gettime:
     case __NR_close:
     case __NR_dup: case __NR_dup2:
     case __NR_epoll_create: case __NR_epoll_ctl: case __NR_epoll_wait:
@@ skipping 64 matching lines @@
     case __NR_rt_sigreturn:
 #if defined(__NR_sigreturn)
     case __NR_sigreturn:
 #endif
 #if defined(__NR_socketpair)
     case __NR_socketpair:
 #endif
     case __NR_time:
     case __NR_uname:
     case __NR_write: case __NR_writev:
-      return Sandbox::SB_ALLOWED;
+      return ErrorCode::ERR_ALLOWED;
 
   // The following system calls are temporarily permitted. This must be
   // tightened later. But we currently don't implement enough of the sandboxing
   // API to do so.
   // As is, this sandbox isn't exactly safe :-/
 #if defined(__NR_sendmsg)
   case __NR_sendmsg: case __NR_sendto:
   case __NR_recvmsg: case __NR_recvfrom:
   case __NR_getsockopt: case __NR_setsockopt:
 #elif defined(__NR_socketcall)
@@ skipping 11 matching lines @@
 #endif
 #if defined(__NR_ugetrlimit)
   case __NR_ugetrlimit:
 #endif
   case __NR_getrlimit:
   case __NR_ioctl:
   case __NR_prctl:
   case __NR_clone:
   case __NR_munmap: case __NR_mprotect: case __NR_madvise:
   case __NR_remap_file_pages:
-      return Sandbox::SB_ALLOWED;
+      return ErrorCode::ERR_ALLOWED;
 
   // Everything that isn't explicitly allowed is denied.
   default:
-    return Sandbox::ErrorCode(defaultHandler, NULL);
+    return Sandbox::Trap(defaultHandler, NULL);
   }
 }
 
 static void *threadFnc(void *arg) {
   return arg;
 }
 
 static void *sendmsgStressThreadFnc(void *arg) {
   if (arg) { }
   static const int repetitions = 100;
@@ skipping 133 matching lines @@
       perror("pthread_create");
       _exit(1);
     }
   }
   for (int i = 0; i < kSendmsgStressNumThreads; ++i) {
     pthread_join(sendmsgStressThreads[i], NULL);
   }
 
   return 0;
 }