Date: Fri, 29 Aug 1997 18:20:39 -0700 (PDT)
Message-Id: <199708300120.SAA04554@adit.ap.net>
Mime-Version: 1.0
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To: rgh AT fia DOT net, djgpp AT delorie DOT com
From: Nate Eldredge <eldredge AT ap DOT net>
Subject: Re: Reading volume label
Precedence: bulk

This function works. It interposes a `.' between the 8th and 9th characters
of the label (like a filename) but otherwise works fine.
--cut--
#include <dir.h>
#include <string.h>
#include <dos.h>

void get_volume_label(char *buf)
{
  struct ffblk f;
  findfirst("*.*",&f,FA_LABEL);
  /* Fortunately, the usual problem with findfirst, that it finds files with
     less than the attributes you wanted, does not occur with DOS version
     > 3.0 and a volume label search */
  /* This assumes that it will never fail to be found, not necessarily
     a safe assumption */
  strcpy(buf,f.ff_name);
}

There is also an ioctl call to give the volume label, but that's more
complicated.

--cut--
At 09:21  8/29/1997 GMT, rgh AT fia DOT net wrote:
>	Can anyone tell me how to read the volume label of a disk (
>using int86() possibly). I checked the FAQ and info, but they don't
>give much information about how to handle int86 functions which return
>pointers to real address space. The info entry seems to say that
>functions which return such pointers are not supported. I hope there
>is some way to read the label which is supported.
For starters, __dpmi_int is the preferred way to generate real-mode
interrupts. You can fetch real-mode memory using dosmemget().

Nate Eldredge
eldredge AT ap DOT net