[hfs-user] To make a Readonly HFS Volume

Entwicklung entwicklung@whengenibk.de
Fri, 26 Apr 2002 14:46:14 +0200


Are you sure you've set drAtrb to 0 first before OR-ing 0x8000 with it ?

Or are you just setting mdb.drAtrb  = 0x8000 instead of  :

1) mdb.drAtrb = 0x0000;
2) mdb.drAtrb | = 0x8000 ;

Stt 2) without stt 1) might result in some unknown value getting written.

-Nandini


----- Original Message -----
From: "Biswaroop(External)" <biswaroopb@integramicro.com>
To: "Entwicklung" <entwicklung@whengenibk.de>
Sent: Friday, April 26, 2002 2:05 PM
Subject: Re: [hfs-user] To make a Readonly HFS Volume


> Hi Nandini,
>  Thanks for a Quick Reply.
>  But I did that too..but no success.
>  regrds
> Biswaroop
> ----- Original Message -----
> From: "Entwicklung" <entwicklung@whengenibk.de>
> To: "Biswaroop(External)" <biswaroopb@integramicro.com>
> Cc: <hfs-user@lists.mars.org>
> Sent: Friday, April 26, 2002 5:08 PM
> Subject: Re: [hfs-user] To make a Readonly HFS Volume
>
>
> > Wouldn't setting bit 15 give 0x8000 ??? numbering the 16 bits from 0..15
> > i.e.
> >
> > - Nandini
> >
> > ----- Original Message -----
> > From: "Biswaroop(External)" <biswaroopb@integramicro.com>
> > To: <hfs-user@lists.mars.org>
> > Sent: Friday, April 26, 2002 1:17 PM
> > Subject: [hfs-user] To make a Readonly HFS Volume
> >
> >
> > > Hi ,
> > >
> > > I want to make a HFS volume readonly.
> > > I am setting the flag in mdb.drAtrb to
> > >
> > > mdb.drAtrb | = 0x4000 ( As said in Inside Macintosh)
> > >
> > > Bit    Meaning
> > > 15      Set  if th volume is Locked by Software.
> > >
> > > After creating a Image of such a Volume.
> > >  I am mounting it with a FreeWare application in Windows which can
mount
> > HFS
> > > volumes.
> > >  But , I can still add files to that volume through this
> > >   software and delete them too.
> > >   That shows the volume is not Locked.
> > >   So, anything else I should do to Volume parameters
> > >   to make that Volume represent a ReadOnly one??
> > >
> > >   Waiting for ur Inputs.
> > >
> > >    Regards
> > >    Biswaroop
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > The difference between sunrise and
> > > sunset lies in the freshness of your
> > > eyes.
> > >                                   --Bisban