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From: Bill Davidsen <davidsen@tmr.com>
To: Linux Kernel M/L <linux-kernel@vger.kernel.org>
Subject: 2.6.10-ac2 - more cdrecord wierdness
Date: Sun, 02 Jan 2005 23:08:58 -0500	[thread overview]
Message-ID: <41D8C55A.5010801@tmr.com> (raw)

I am trying to write a backup CD. The first write goes fine, I have rw 
permission on the device, I use /dev/hdc, all is fine. I can mount the 
CD, read it, etc.

However - it was written with the -multi option so I can add things to 
it, since most of my backups are 50MB at a time. When I try to get the 
size (using a perl script) which does:
  cdrecord dev=/dev/hdc -msinfo
I get permission denied. Even if I set cdrecord setuid (as a test, I 
don't run that way).

Back to ide-scsi, the perl program allows me to have the best features 
of growisofs and some other usefulk features for backing up relatively 
small datasets on a single CD.

Just a FYI - I assume there's a good reason why reading the unclosed 
filesystem size would compromise security.

             reply	other threads:[~2005-01-03  4:19 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-01-03  4:08 Bill Davidsen [this message]
2005-01-03 15:52 ` 2.6.10-ac2 - more cdrecord wierdness Alan Cox
2005-01-03 17:21   ` Bill Davidsen

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