*wip* NSS: handle chromeos system slot.

crypto/nss_util_internal.h

 // 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.
 
 #ifndef CRYPTO_NSS_UTIL_INTERNAL_H_
 #define CRYPTO_NSS_UTIL_INTERNAL_H_
 
 #include <secmodt.h>
 
 #include "base/callback.h"
@@ skipping 28 matching lines @@
  public:
   AutoSECMODListReadLock();
   ~AutoSECMODListReadLock();
 
  private:
   SECMODListLock* lock_;
   DISALLOW_COPY_AND_ASSIGN(AutoSECMODListReadLock);
 };
 
 #if defined(OS_CHROMEOS)
+// Returns a reference to the system-wide TPM slot.  Caller must release
+// returned reference with PK11_FreeSlot.
+CRYPTO_EXPORT PK11SlotInfo* GetSystemNSSKeySlot() WARN_UNUSED_RESULT;
+
 // Prepare per-user NSS slot mapping. It is safe to call this function multiple
 // times. Returns true if the user was added, or false if it already existed.
 CRYPTO_EXPORT bool InitializeNSSForChromeOSUser(
     const std::string& email,
     const std::string& username_hash,
     bool is_primary_user,
     const base::FilePath& path) WARN_UNUSED_RESULT;
 
 // Use TPM slot |slot_id| for user.  InitializeNSSForChromeOSUser must have been
 // called first.
@@ skipping 14 matching lines @@
 // loaded and |callback| is non-null, the |callback| will be run once the slot
 // is loaded.
 CRYPTO_EXPORT ScopedPK11Slot GetPrivateSlotForChromeOSUser(
     const std::string& username_hash,
     const base::Callback<void(ScopedPK11Slot)>& callback) WARN_UNUSED_RESULT;
 #endif  // defined(OS_CHROMEOS)
 
 }  // namespace crypto
 
 #endif  // CRYPTO_NSS_UTIL_INTERNAL_H_