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From: jpotter@ucs.adelaide.edu.au (Jonathan Potter)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: Re-post of assigns problem.
Message-ID: <2671@sirius.ucs.adelaide.edu.au>
Date: 25 Mar 91 07:00:49 GMT
Article-I.D.: sirius.2671
References: <13727@ccncsu.ColoState.EDU>
Organization: Information Technology Division, The University of Adelaide, AUSTRALIA
Lines: 56

Here is some code to obtain a list of devices in the system. Dos library must
already be open, with a pointer to it in the variable DosBase.

Hope it helps!

Jon

--------------------------------------------------------------------------------

extern struct DosLibrary *DosBase;

getdevicelist()
{
  struct DeviceList *devlist;
  struct RootNode *rootnode;
  struct DosInfo *dosinfo;
  char devname[32];

  rootnode=(struct RootNode *) DosBase->dl_Root;
  dosinfo=(struct DosInfo *) BADDR(rootnode->rn_Info);
  devlist=(struct DeviceList *) BADDR(dosinfo->di_DevInfo);

  while (devlist) {
    if (devlist->dl_Type==DLT_DEVICE && devlist->dl_Task) {

/* This is an actual, physical device, like DF0: */

      conbstr((BPTR)devlist->dl_Name,devname);
      strcat(devname,":");
      heres_a_device(devname);
    }
    else if (devlist->dl_Type==DLT_DIRECTORY) {

/* This is an assigned device, like C: */

      conbstr((BPTR)devlist->dl_Name,devname);
      strcat(devname,":");
      heres_a_device(devname);
    }
    devlist=(struct DeviceList *) BADDR(devlist->dl_Next);
  }
}

conbstr(in,out)
BSTR in;
char *out;
{
  UBYTE *ch;
  int len,i;

  ch=(UBYTE *) BADDR(in);
  len=(int) *(ch++);
  len=(len>31)?31:len;
  for (i=0;i<len;i++) out[i]=*(ch++);
  out[i]=0;
}