rom/dos/packethelper.c

   1 /*
   2     Copyright © 1995-2011, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6     Lang: English
   7 */
   8
   9 #include <aros/debug.h>
  10 #include <proto/dos.h>
  11 #include <proto/exec.h>
  12
  13 #include <string.h>
  14
  15 #include "dos_intern.h"
  16
  17 BOOL getpacketinfo(struct DosLibrary *DOSBase, CONST_STRPTR name, struct PacketHelperStruct *phs)
  18 {
  19     if (!strchr(name, ':'))
  20     {
  21         /* no ":" */
  22         struct Process *me = (struct Process *)FindTask(NULL);
  23         BPTR cur;
  24         BSTR bstrname = C2BSTR(name);
  25         struct FileLock *fl;
  26
  27         ASSERT_VALID_PROCESS(me);
  28
  29         cur = me->pr_CurrentDir;
  30         if (cur && cur != (BPTR)-1) {
  31             fl = BADDR(cur);
  32             phs->port = fl->fl_Task;
  33             phs->lock = cur;
  34         } else {
  35             phs->port = DOSBase->dl_Root->rn_BootProc;
  36             phs->lock = BNULL;
  37         }
  38         phs->dp = NULL;
  39         phs->name = bstrname;
  40         return TRUE;
  41     } else { /* ":" */
  42         BSTR bstrname = C2BSTR(name);
  43         struct DevProc *dvp = NULL;
  44         if ((dvp = GetDeviceProc(name, dvp))) {
  45             phs->name = bstrname;
  46             phs->port = dvp->dvp_Port;
  47             phs->lock = dvp->dvp_Lock;
  48             phs->dp = dvp;
  49             return TRUE;
  50         }
  51     }
  52     return FALSE;
  53 }
  54
  55 BOOL getdevpacketinfo(struct DosLibrary *DOSBase, CONST_STRPTR devname, CONST_STRPTR name, struct PacketHelperStruct *phs)
  56 {
  57     if ((phs->dp = GetDeviceProc(devname, NULL)) == NULL)
  58         return DOSFALSE;
  59     /* we're only interested in real devices */
  60     if (phs->dp->dvp_DevNode == NULL ||
  61         phs->dp->dvp_DevNode->dol_Type != DLT_DEVICE) {
  62         FreeDeviceProc(phs->dp);
  63         SetIoErr(ERROR_DEVICE_NOT_MOUNTED);
  64         return DOSFALSE;
  65     }
  66     phs->port = phs->dp->dvp_Port;
  67     phs->lock = BNULL;
  68     phs->name = BNULL;
  69     if (!name)
  70         return TRUE;
  71     phs->name = C2BSTR(name);
  72     if (!phs->name) {
  73         FreeDeviceProc(phs->dp);
  74         SetIoErr(ERROR_NO_FREE_STORE);
  75         return DOSFALSE;
  76     }
  77     return TRUE;
  78 }
  79
  80 void freepacketinfo(struct DosLibrary *DOSBase, struct PacketHelperStruct *phs)
  81 {
  82     if (phs->dp)
  83         FreeDeviceProc(phs->dp);
  84     FREEC2BSTR(phs->name);
  85 }