src/add-ons/kernel/file_systems/nfs4/Delegation.cpp

   1 /*
   2  * Copyright 2012 Haiku, Inc. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Paweł Dziepak, pdziepak@quarnos.org
   7  */
   8
   9
  10 #include "Delegation.h"
  11
  12 #include "Inode.h"
  13 #include "Request.h"
  14
  15
  16 Delegation::Delegation(const OpenDelegationData& data, Inode* inode,
  17         uint64 clientID, bool attribute)
  18         :
  19         fClientID(clientID),
  20         fData(data),
  21         fInode(inode),
  22         fAttribute(attribute)
  23 {
  24         ASSERT(inode != NULL);
  25 }
  26
  27
  28 status_t
  29 Delegation::GiveUp(bool truncate)
  30 {
  31         if (!fAttribute && !truncate)
  32                 fInode->SyncAndCommit(true);
  33
  34         ReturnDelegation();
  35
  36         return B_OK;
  37 }
  38
  39
  40 status_t
  41 Delegation::ReturnDelegation()
  42 {
  43         uint32 attempt = 0;
  44         do {
  45                 RPC::Server* serv = fFileSystem->Server();
  46                 Request request(serv, fFileSystem);
  47                 RequestBuilder& req = request.Builder();
  48
  49                 req.PutFH(fInfo.fHandle);
  50                 req.DelegReturn(fData.fStateID, fData.fStateSeq);
  51
  52                 status_t result = request.Send();
  53                 if (result != B_OK)
  54                         return result;
  55
  56                 ReplyInterpreter& reply = request.Reply();
  57
  58                 if (HandleErrors(attempt, reply.NFS4Error(), serv, NULL,
  59                                 fInode->GetOpenState())) {
  60                         continue;
  61                 }
  62
  63                 reply.PutFH();
  64
  65                 return reply.DelegReturn();
  66         } while (true);
  67 }
  68