Date: Tue, 26 Feb 2008 11:12:17 +1030 From: "Daniel O'Connor" <doconnor@gsoft.com.au> To: freebsd-hackers@freebsd.org Cc: Alex Zbyslaw <xfb52@dial.pipex.com> Subject: Re: emulate an end-of-media Message-ID: <200802261112.25449.doconnor@gsoft.com.au> In-Reply-To: <47C33384.6040701@dial.pipex.com> References: <op.t63j2veq724k7f@martin> <20080225154455.4822e72a@bhuda.mired.org> <47C33384.6040701@dial.pipex.com>
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--nextPart2814839.qx05Vb5oxd Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Tue, 26 Feb 2008, Alex Zbyslaw wrote: > Are there not (at least) two more alternatives? > > 1) Add gzip/zlib support to dump. That would seem easier than > new devices. Then -a would just work. > > 2) Instead of using cdrecord directly you have a wrapper which > "emulates" the dump -a behaviour by writing 650/700Mb of data using > cdrecord then prompting for the next cd. You don't close the pipe, > and dump should just block waiting for your "device" to be ready.=20 > Might have trouble accessing /dev/tty - not sure. The general solution would be nicer, then you could compress & encrypt. Although I'm not sure it's so simple as adding SIGPIPE because at the=20 end of the media the compressor will be holding some data that it has=20 read but will never make it out to the media..=20 The only way I could think to solve this was to add an argument that=20 specified a pipeline to stick after the data is generated but before=20 it's fed to the output, although even then it gets a bit gnarly..=20 =2D-=20 Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C --nextPart2814839.qx05Vb5oxd Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQBHw2Bx5ZPcIHs/zowRAt2pAJkBECSy5V18ViClTVmTLGsOFh4CMgCfYM12 mC3Z80jz3UweyfhAVSncFUA= =kbOz -----END PGP SIGNATURE----- --nextPart2814839.qx05Vb5oxd--
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