aplfw/driver/tcpip/tcpip/tcpip_open.c

   1 /**
   2  *  Hyper Operating System  Application Framework
   3  *
   4  * @file  ipether.h
   5  * @brief %jp{Ether上にIPプロトコルを実装(つまりMAC層近辺)}
   6  *
   7  * Copyright (C) 2006-2007 by Project HOS
   8  * http://sourceforge.jp/projects/hos/
   9  */
  10
  11
  12 #include <stdlib.h>
  13 #include <string.h>
  14 #include "tcpip_local.h"
  15
  16
  17 HANDLE TcpIp_Open(C_DRVOBJ *pDrvObj, const char *pszPath, int iMode)
  18 {
  19         C_TCPIP         *self;
  20         HANDLE          hFile;
  21         C_TCPIPFILE     *pFile;
  22
  23         /* upper cast */
  24         self = (C_TCPIP *)pDrvObj;
  25
  26         /* create file descriptor */
  27         if ( (hFile = TcpIpFile_Create(self)) == HANDLE_NULL )
  28         {
  29                 return HANDLE_NULL;
  30         }
  31
  32         if ( (hFile = SysMem_Alloc(sizeof(C_TCPIPFILE))) == NULL )
  33         {
  34                 return HANDLE_NULL;
  35         }
  36         pFile = (C_TCPIPFILE *)hFile;
  37
  38
  39         /* デバイスオープン処理 */
  40         if ( self->iOpenCount++ == 0 )
  41         {
  42         }
  43
  44         /* オープン処理 */
  45         if ( strncmp(pszPath, "udp:", 4) == 0 )
  46         {
  47                 /* UDPポートオープン */
  48                 pFile->iType     = TCPIPFILE_TYPE_UDP;
  49                 pFile->uhPortNum = (unsigned short)atoi(&pszPath[4]);
  50
  51                 /* リストに登録 */
  52                 if ( self->pUdpHead == NULL )
  53                 {
  54                         pFile->pNext   = pFile;
  55                         pFile->pPrev   = pFile;
  56                         self->pUdpHead = pFile;
  57                 }
  58                 else
  59                 {
  60                         pFile->pNext = self->pUdpHead;
  61                         pFile->pPrev = pFile->pPrev;
  62                         pFile->pNext->pPrev = pFile;
  63                         pFile->pPrev->pNext = pFile;
  64                 }
  65         }
  66
  67         return (HANDLE)pFile;
  68 }
  69
  70
  71 /* end of file */