source4/ntvfs/ntvfs_util.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    NTVFS utility code
   4    Copyright (C) Stefan Metzmacher 2004
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20 /*
  21   this implements common utility functions that many NTVFS backends may wish to use
  22 */
  23
  24 #include "includes.h"
  25 #include "dlinklist.h"
  26 #include "smb_server/smb_server.h"
  27
  28
  29 NTSTATUS ntvfs_async_state_push(struct smbsrv_request *req,
  30                                 void *private_data,
  31                                 void (*send_fn)(struct smbsrv_request *),
  32                                 struct ntvfs_module_context *ntvfs)
  33 {
  34         struct ntvfs_async_state *async;
  35
  36         async = talloc_p(req, struct ntvfs_async_state);
  37         if (!async) {
  38                 return NT_STATUS_NO_MEMORY;
  39         }
  40
  41         async->state            = req->async_states->state;
  42         async->private_data     = private_data;
  43         async->send_fn          = send_fn;
  44         async->status           = NT_STATUS_INTERNAL_ERROR;
  45
  46         async->ntvfs            = ntvfs;
  47
  48         DLIST_ADD(req->async_states, async);
  49
  50         return NT_STATUS_OK;
  51 }
  52
  53 void ntvfs_async_state_pop(struct smbsrv_request *req)
  54 {
  55         struct ntvfs_async_state *async;
  56
  57         async = req->async_states;
  58
  59         DLIST_REMOVE(req->async_states, async);
  60
  61         req->async_states->state        = async->state;
  62         req->async_states->status       = async->status;
  63
  64         talloc_free(async);
  65 }