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From: S_ASCHMIDT@iravcl.ira.uka.de (|S| Angela Schmidt)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: Device List
Message-ID: <1991Jun25.131549.25837@ira.uka.de>
Date: 25 Jun 91 14:04:34 GMT
References: <ad99s461.9855@sycom.UUCP>
Sender: news@ira.uka.de (USENET News System)
Organization: University of Karlsruhe, FRG (Informatik Rechnerabteilung)
Lines: 77
In-Reply-To: ad99s461@sycom.UUCP's message of 19 Jun 91 07: 47:45 GMT
X-News-Reader: VMS NEWS 1.10

In <ad99s461.9855@sycom.UUCP> ad99s461@sycom.UUCP writes:

> Help! I am desperate need of information on scanning the Device List.
> [...]

I've included a part of my program which scans the devicelist for
DLT_DEVICE (DF0:, DF1:, DH0:, RAD:,...)

Try to change DLT_DEVICE to DLT_VOLUMES (= Disk names) or DLT_DIRECTORY
(= ASSIGNS) and leave "if (fssm!=0)" out.

Remember that RAM: is no device, so you won't find it using DLT_DEVICE!

struct DeviceInfos {
   char devname[MAX_DEVICE];     /* Devicename (e.g. DF0:) */
   ULONG devunit;                /* Unit */
   ULONG devflags;               /* Memory-Flags */
   char devdriver[MAX_TREIBER];  /* Drivername */
   long entries[MAX_ENTRIES];    /* entrees */
};

void DeviceList ()
{
   register long i, j=0;
   struct DeviceInfos *di[MAXDEVS];
   register struct DeviceInfos **devinf=di;

   Forbid ();
   for (i=0; i<MAXDEVS; i++)
      di[i]=&devinfos[i];
   i=0;
   dev=(struct DeviceList *) BADDR(((struct DosInfo *) BADDR(((struct RootNode *) (DOSBase->dl_Root))->rn_Info))->di_DevInfo);
   while (dev != 0 && i<MAXDEVS) {
      if (dev->dl_Type==DLT_DEVICE) { /* Disks only */
                                      /* DLT_VOLUMES    Volumes */
                                      /* DLT_DIRECTORY  Assigns */
         dn=(struct DeviceNode *) dev;
         if (dn->dn_Task) {
            fssm=(struct FileSysStartupMsg *) (dn->dn_Startup<<2);
            if (fssm!=0) {          /* StartupMessage for disks */
               for (j=0; j<*((char *) BADDR(dn->dn_Name)); j++)
                  devinf[i]->devname[j]=*((char *) BADDR(dn->dn_Name)+1+j);
               devinf[i]->devname[j]=':';
               devinf[i]->devname[j+1]=0;
               devinf[i]->devunit=fssm->fssm_Unit;
               devinf[i]->devflags=fssm->fssm_Flags;
               fenv=(ULONG *) (fssm->fssm_Environ<<2);
               for (j=0; j<*((char *) BADDR(fssm->fssm_Device)); j++)
                  devinf[i]->devdriver[j]=*((char *) BADDR(fssm->fssm_Device)+1+j);
               devinf[i]->devdriver[j]=0;
               for (j=0; j<=fenv[DE_TABLESIZE]; j++)
                  devinf[i]->entries[j]=fenv[j];
               devinf[i]->entries[DE_MEMBUFTYPE]|=MEMF_PUBLIC;
            }
         }
      }
      dev=(struct DeviceList *) BADDR(dev->dl_Next);
   }
   Permit ();
}

> 
> -- Alex Deburie

Hope this helps

Angela




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Angela Schmidt   Internet: S_ASchmidt@iravcl.ira.uka.de  |        //
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