dll/np/nfs/options.c

   1 /* NFSv4.1 client for Windows
   2  * Copyright © 2012 The Regents of the University of Michigan
   3  *
   4  * Olga Kornievskaia <aglo@umich.edu>
   5  * Casey Bodley <cbodley@umich.edu>
   6  *
   7  * This library is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU Lesser General Public License as published by
   9  * the Free Software Foundation; either version 2.1 of the License, or (at
  10  * your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful, but
  13  * without any warranty; without even the implied warranty of merchantability
  14  * or fitness for a particular purpose.  See the GNU Lesser General Public
  15  * License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public License
  18  * along with this library; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  20  */
  21
  22 #include <windows.h>
  23 #include "options.h"
  24
  25
  26 DWORD InitializeConnectionInfo(
  27     IN OUT PCONNECTION_INFO Connection,
  28     IN PMOUNT_OPTION_BUFFER Options,
  29     OUT LPWSTR *ConnectionName)
  30 {
  31     DWORD result = WN_SUCCESS;
  32     SIZE_T size;
  33
  34     /* verify that this is a mount options buffer */
  35     if (Options &&
  36         Options->Zero == 0 &&
  37         Options->Secret == MOUNT_OPTION_BUFFER_SECRET)
  38     {
  39         Connection->Options = Options;
  40         size = MAX_CONNECTION_BUFFER_SIZE(Options->Length);
  41     }
  42     else
  43     {
  44         Connection->Options = NULL;
  45         size = MAX_CONNECTION_BUFFER_SIZE(0);
  46     }
  47
  48     Connection->Buffer = LocalAlloc(LMEM_ZEROINIT, size);
  49     if (Connection->Buffer)
  50         *ConnectionName = (LPWSTR)Connection->Buffer->Buffer;
  51     else
  52         result = WN_OUT_OF_MEMORY;
  53
  54     return result;
  55 }
  56
  57 #ifdef __REACTOS__
  58 FORCEINLINE SIZE_T ConnectionBufferSize(
  59 #else
  60 static FORCEINLINE SIZE_T ConnectionBufferSize(
  61 #endif
  62     IN PCONNECTION_BUFFER Buffer)
  63 {
  64     return sizeof(USHORT) + sizeof(USHORT) + sizeof(ULONG) +
  65         Buffer->NameLength + Buffer->EaPadding + Buffer->EaLength;
  66 }
  67
  68 void MarshalConnectionInfo(
  69     IN OUT PCONNECTION_INFO Connection)
  70 {
  71     PCONNECTION_BUFFER Buffer = Connection->Buffer;
  72     LPWSTR ConnectionName = (LPWSTR)Buffer->Buffer;
  73
  74     Buffer->NameLength = (USHORT)(wcslen(ConnectionName) + 1) * sizeof(WCHAR);
  75
  76     /* copy the EaBuffer after the end of ConnectionName */
  77     if (Connection->Options && Connection->Options->Length)
  78     {
  79         PBYTE ptr = Buffer->Buffer + Buffer->NameLength;
  80         /* add padding so EaBuffer starts on a ULONG boundary */
  81         Buffer->EaPadding = (USHORT)
  82             (sizeof(ULONG) - (SIZE_T)ptr % sizeof(ULONG)) % sizeof(ULONG);
  83         Buffer->EaLength = Connection->Options->Length;
  84         ptr += Buffer->EaPadding;
  85
  86         RtlCopyMemory(ptr, Connection->Options->Buffer, Buffer->EaLength);
  87     }
  88
  89     Connection->BufferSize = (ULONG)ConnectionBufferSize(Buffer);
  90 }
  91
  92 void FreeConnectionInfo(
  93     IN PCONNECTION_INFO Connection)
  94 {
  95     if (Connection->Buffer)
  96     {
  97         LocalFree(Connection->Buffer);
  98         Connection->Buffer = NULL;
  99     }
 100     Connection->Options = NULL;
 101     Connection->BufferSize = 0;
 102 }