rom/dos/filesystem_support.c

   1 /*
   2     Copyright © 1995-2009, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6     Lang: English
   7 */
   8
   9 #include <dos/dos.h>
  10 #include <dos/dosextens.h>
  11 #include <dos/filesystem.h>
  12 #include <exec/memory.h>
  13 #include <proto/dos.h>
  14 #include <proto/exec.h>
  15 #include "dos_intern.h"
  16
  17 #include <string.h>
  18
  19
  20 void InitIOFS(struct IOFileSys *iofs, ULONG type,
  21               struct DosLibrary *DOSBase)
  22 {
  23     struct Process *me = (struct Process *)FindTask(NULL);
  24
  25     iofs->IOFS.io_Message.mn_Node.ln_Type = NT_REPLYMSG;
  26     iofs->IOFS.io_Message.mn_ReplyPort    = &me->pr_MsgPort;
  27     iofs->IOFS.io_Message.mn_Length       = sizeof(struct IOFileSys);
  28     iofs->IOFS.io_Command                 = type;
  29     iofs->IOFS.io_Flags                   = 0;
  30 }
  31
  32 CONST_STRPTR StripVolume(CONST_STRPTR name) {
  33     const char *path = strchr(name, ':');
  34     if (path != NULL)
  35         path++;
  36     else
  37         path = name;
  38     return path;
  39 }
  40
  41 LONG DoIOFS(struct IOFileSys *iofs, struct DevProc *dvp, CONST_STRPTR name,
  42     struct DosLibrary *DOSBase) {
  43     BOOL freedvp = FALSE;
  44
  45     if (dvp == NULL) {
  46         if ((dvp = GetDeviceProc(name, NULL)) == NULL)
  47             return IoErr();
  48
  49         freedvp = TRUE;
  50     }
  51
  52     iofs->IOFS.io_Device = (struct Device *) dvp->dvp_Port;
  53
  54     if (dvp->dvp_Lock != NULL)
  55         iofs->IOFS.io_Unit = ((struct FileHandle *) BADDR(dvp->dvp_Lock))->fh_Unit;
  56     else
  57         iofs->IOFS.io_Unit = dvp->dvp_DevNode->dol_Ext.dol_AROS.dol_Unit;
  58
  59     if (name != NULL)
  60         iofs->io_Union.io_NamedFile.io_Filename = StripVolume(name);
  61
  62     DosDoIO((struct IORequest *)iofs);
  63
  64     if (freedvp)
  65         FreeDeviceProc(dvp);
  66
  67     SetIoErr(iofs->io_DosError);
  68
  69     return iofs->io_DosError;
  70 }