Linux sandbox: componentize almost everything.

sandbox/linux/services/yama.h

 // Copyright 2014 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.
 
 #ifndef SANDBOX_LINUX_SERVICES_YAMA_H_
 #define SANDBOX_LINUX_SERVICES_YAMA_H_
 
 #include "base/basictypes.h"
 #include "base/process/process_handle.h"
+#include "sandbox/linux/sandbox_export.h"
 
 namespace sandbox {
 
 // Yama is a LSM kernel module which can restrict ptrace().
 // This class provides ways to detect if Yama is present and enabled
 // and to restrict which processes can ptrace the current process.
-class Yama {
+class SANDBOX_EXPORT Yama {
  public:
   // This enum should be used to set or check a bitmask.
   // A value of 0 would indicate that the status is not known.
   enum GlobalStatus {
     STATUS_KNOWN = 1 << 0,
     STATUS_PRESENT = 1 << 1,
     STATUS_ENFORCING = 1 << 2,
     // STATUS_STRICT_ENFORCING corresponds to either mode 2 or mode 3 of Yama.
     // Ptrace could be entirely denied, or restricted to CAP_SYS_PTRACE
     // and PTRACE_TRACEME.
@@ skipping 21 matching lines @@
   // Helper for checkking for STATUS_ENFORCING in GetStatus().
   static bool IsEnforcing();
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(Yama);
 };
 
 }  // namespace sandbox
 
 #endif  // SANDBOX_LINUX_SERVICES_YAMA_H_