366 lines
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366 lines
17 KiB
Plaintext
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libburnia-project.org
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------------------------------------------------------------------------------
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This all is under GPL.
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(See GPL reference, our clarification and commitment at the end of this text)
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------------------------------------------------------------------------------
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libburnia-project.org
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By Mario Danic <mario.danic@gmail.com> and Thomas Schmitt <scdbackup@gmx.net>
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Copyright (C) 2006-2008 Mario Danic, Thomas Schmitt
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Still containing parts of
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Libburn. By Derek Foreman <derek@signalmarketing.com> and
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Ben Jansens <xor@orodu.net>
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Copyright (C) 2002-2006 Derek Foreman and Ben Jansens
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This libburnia-project.org toplevel README (C) 2006-2008 Thomas Schmitt
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------------------------------------------------------------------------------
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Build and Installation
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Our build system is based on autotools. For preparing the build of a SVN
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snapshot you will need autotools of at least version 1.7.
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Check out from SVN by
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svn co http://svn.libburnia-project.org/libburn/trunk libburn
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go into directory libburn and apply autotools by
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./bootstrap
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Alternatively you may unpack a release tarball for which you do not need
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autotools installed.
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To build a libburnia-project.org subproject it should be sufficient to go
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into its toplevel directory (here: "libburn") and execute
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./configure --prefix=/usr
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make
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To make libburn accessible for running resp. application development,
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and to install the cdrecord compatibility binary cdrskin, do:
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make install
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Above procedure installs cdrskin depending on libburn.so.4 .
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For a standalone cdrskin binary, see cdrskin/README.
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An important part of the project, libisofs, is hosted in a bzr repository at
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launchpad.net :
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bzr branch lp:libisofs
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Another part the project, libisoburn, is hosted in the libburnia SVN, too:
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svn co http://svn.libburnia-project.org/libisoburn/trunk libisoburn
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See README files there.
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------------------------------------------------------------------------------
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Overview of libburnia-project.org
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libburnia-project.org is an open-source software project for reading, mastering
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and writing optical discs.
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For now this means only CD media and all single layer DVD media except DVD+R.
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The project comprises of several more or less interdependent parts which
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together strive to be a usable foundation for application development.
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These are libraries, language bindings, and middleware binaries which emulate
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classical (and valuable) Linux tools.
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Our scope is currently Linux 2.4 and 2.6 only. For ports to other systems
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we would need : login on a development machine resp. a live OS on CD or DVD,
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advise from a system person about the equivalent of Linux sg or FreeBSD CAM,
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volunteers for testing of realistic use cases.
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We have a well tested code base for burning data and audio CDs and many DVD
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types. The burn API is quite comprehensively documented and can be used to
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build a presentable application.
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We have a functional binary which emulates the core use cases of cdrecord in
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order to prove that usability, and in order to allow you to explore libburn's
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scope by help of existing cdrecord frontends.
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ISO 9660 filesystems with Rock Ridge and Joliet extensions can be created
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and manipulated quite freely. This capability together with our burn capability
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makes possible a single binary application which covers all steps of image
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composition, updating and writing. Quite unique in the Linux world.
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The project components (list subject to growth, hopefully):
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- libburn is the library by which preformatted data get onto optical media.
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It uses either /dev/sgN (e.g. on kernel 2.4 with ide-scsi) or
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/dev/srM or /dev/hdX (e.g. on kernel 2.6).
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libburn is the foundation of our cdrecord emulation. Its code is
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independent of cdrecord. Its DVD capabilities are learned from
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studying the code of dvd+rw-tools and MMC-5 specs. No code but only
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the pure SCSI knowledge has been taken from dvd+rw-tools, though.
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- libisofs is the library to pack up hard disk files and directories into a
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ISO 9660 disk image. This may then be brought to CD via libburn.
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libisofs is to be the foundation of our upcoming mkisofs emulation.
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- libisoburn is an add-on to libburn and libisofs which coordinates both and
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also allows to grow ISO-9660 filesystem images on multi-session
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media as well as on overwriteable media via the same API.
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All media peculiarities are handled automatically.
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- cdrskin is a limited cdrecord compatibility wrapper for libburn.
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cdrecord is a powerful GPL'ed burn program included in Joerg
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Schilling's cdrtools. cdrskin strives to be a second source for
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the services traditionally provided by cdrecord. Additionally it
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provides libburn's DVD capabilities, where only -sao is compatible
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with cdrecord.
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cdrskin does not contain any bytes copied from cdrecord's sources.
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Many bytes have been copied from the message output of cdrecord
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runs, though.
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See cdrskin/README for more.
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- xorriso is an application of all three libraries which creates, loads,
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manipulates and writes ISO 9660 filesystem images with
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Rock Ridge extensions. Manipulation is not only adding or
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overwriting of files but also deletion, renaming, and attribute
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changing.
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See xorriso/README for more.
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- "test" is a collection of application gestures and examples given by the
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authors of the library features. The burn API example of libburn
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is named test/libburner.c . The API for media information inquiry is
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demonstrated in test/telltoc.c .
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Explore these examples if you look for inspiration.
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We strive to be a responsive upstream.
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Our libraries are committed to maintain older feature sets in newer versions.
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This applies to source code headers (API) as well as to linkable objects (ABI).
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The only exception from this rule is about non-release versions x.y.*[13579]
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which are allowed to introduce new features, change those new features in
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any way and even may revoke such new features before the next release of
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x.y.*[02468]. As soon as it is released, a feature is promised to persist.
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SONAMES:
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libburn.so.4 (since 0.3.4, March 2007),
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libisofs.so.6 (since 0.6.2, February 2008),
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libisoburn.so.1 (since 0.1.0, February 2008).
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------------------------------------------------------------------------------
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Project history as far as known to me:
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- Founded in 2002 as it seems. See mailing list archives
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http://lists.freedesktop.org/archives/libburn/
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The site of this founder team is reachable and offers download of a
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(somewhat outdated) tarball and from CVS :
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http://icculus.org/burn/
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Copyright holders and most probably founders:
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Derek Foreman and Ben Jansens.
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- I came to using libburn in 2005. Founded the cdrskin project and submitted
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necessary patches which were accepted or implemented better. Except one
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remaining patch which prevented cdrskin from using vanilla libburn from CVS.
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The cdrskin project site is reachable and offers download of the heavily
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patched (elsewise outdated) tarball under the name cdrskin-0.1.2 :
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http://scdbackup.sourceforge.net/cdrskin_eng.html
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It has meanwhile moved to use vanilla libburn.pykix.org , though.
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Version 0.1.4 constitutes the first release of this kind.
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- In July 2006 our team mate Mario Danic announced a revival of libburn
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which by about nearly everybody else was perceived as unfriendly fork.
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Derek Foreman four days later posted a message which expressed his
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discontent.
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The situation first caused me to publically regret it and then - after i
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got the opportunity to move in with cdrskin - gave me true reason to
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personally apologize to Derek Foreman, Ben Jansens and the contributors at
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icculus.org/burn. Posted to both projects:
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http://lists.freedesktop.org/archives/libburn/2006-August/000446.html
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http://mailman-mail1.webfaction.com/pipermail/libburn-hackers/2006-August/000024.html
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- Mid August 2006 project cdrskin established a branch office in
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libburn.pykix.org so that all maintainers of our tools have one single place
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to get the current (at least slightely) usable coordinated versions of
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everything.
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Project cdrskin will live forth independendly for a while but it is committed
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to stay in sync with libburn.pykix.org (or some successor, if ever).
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cdrskin is also committed to support icculus.org/burn if the pending fork
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is made reality by content changes in that project. It will cease to maintain
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a patched version of icculus.org/burn though. Precondition for a new
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release of cdrskin on base of icculus.org/burn would be the pending
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"whitelist patch" therefore.
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I would rather prefer if both projects find consense and merge, or at least
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cooperate. I have not given up hope totally, yet.
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I, personally, will honor any approach.
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- 2nd September 2006 the decision is made to strive for a consolidation of
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copyright and a commitment to GPL in a reasonable and open minded way.
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This is to avoid long term problems with code of unknown origin and
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with finding consense among the not so clearly defined group of copyright
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claimers and -holders.
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libisofs is already claimed sole copyright Mario Danic.
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cdrskin and libburner are already claimed sole copyright Thomas Schmitt.
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Rewrites of other components will follow and concluded by claiming full
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copyright within the group of libburn.pykix.org-copyright holders.
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- 16th September 2006 feature freeze for release of libburn-0.2.2 .
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- 20th September 2006 release of libburn-0.2.2 .
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- 26th October 2006 feature freeze for cdrskin-0.2.4 based on libburn-0.2.3 .
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This version of cdrskin is much more cdrecord compatible in repect
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to drive addressing and audio features.
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- 30th October 2006 release of cdrskin-0.2.4 .
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- 13th November 2006 splitting releases of libburn+cdrskin from libisofs.
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- 24th November 2006 release of libburn-0.2.6 and cdrskin-0.2.6 . cdrskin has
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become suitable for unaware frontends as long as they perform only the core
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of cdrecord use cases (including open-ended input streams, audio, and
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multi-session).
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- 28th November 2006 the umbrella project which encloses both, libisofs and
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libburn, is now called libburnia. For the origin of this name, see
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http://en.wikipedia.org/wiki/Liburnians .
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- 16th January 2007 release of libburn-0.3.0 and cdrskin-0.3.0 . Now the scope
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is widened to a first class of DVD media: overwriteable single layer types
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DVD-RAM, DVD+RW, DVD-RW. This is not a cdrecord emulation but rather inspired
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by dvd+rw-tools' "poor man" writing facility for this class of media.
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Taking a bow towards Andy Polyakov.
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- 11th February 2007 version 0.3.2 covers sequential DVD-RW and DVD-R with
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multi-session and with DAO.
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- 12th March 2007 version 0.3.4 supports DVD+R and thus covers all single layer
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DVD media. Code for double layer DVD+/-R is implemented but awaits a tester
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yet.
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- 23th April 2007 version 0.3.6 follows the unanimous opinion of Linux kernel
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people that one should not use /dev/sg on kernel 2.6.
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- 31st July 2007 version 0.3.8 marks the first anniversary of libburn revival.
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We look back on improved stability, a substantially extended list of media
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and write modes, and better protection against typical user mishaps.
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- 24th October 2007 version 0.4.0 is the foundation of new library libisoburn
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and an upcomming integrated application for manipulating and writing
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ISO 9660 + Rock Ridge images. cdrskin-0.4.0 got capabilities like growisofs
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by these enhancements: growing of overwriteable media and disk files.
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Taking again a bow towards Andy Polyakov.
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- 26th Januar 2008 version 0.4.2 rectifies the version numbering so that we
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reliably release libburn.so.4 as should have been done since libburn-0.3.2.
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cdrskin now is by default linked dynamically and does a runtime check
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to ensure not to be started with a libburn which is older than itself.
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- 3rd Feb 2008 libisofs-0.2.x (.so.5) has been deprecated.
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- 14th Feb 2008 libisofs-0.6.2 permanently replaces the old libisofs-0.2.x.
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It is the first release of new libisofs.so.6 which will guarantee future
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API/ABI compatibility for its whole feature set.
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- 15th Feb 2008 libisoburn-0.1.0 (.so.1) coordinates libisofs and libburn for
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the purpose of ISO image reading and writing. It emulates multi-session on
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overwriteable media. Application xorriso makes use of all three libraries.
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- 8th Apr 2008 libburn-0.4.4 has proven to be capable of burning to DVD+R/DL
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and read performance on disk file pseudo-drives has been improved.
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- 27th Apr 2008 libisofs-0.6.4 can now read data file content from images
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and can map pieces of disk files onto image files. Image directory iteration
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has been enhanced. Input data streams and extended information have been
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exposed in the API to allow future development.
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- 29th Apr 2008 libisoburn-0.1.4 was made more efficient with reading of
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image tree nodes. It now depends on libisofs-0.6.4 and libburn-0.4.4.
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xorriso makes use of new libisofs features by performing incremental
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updates of directory trees and by cutting oversized data files into
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pieces. A primitive single session emulation of cdrecord and mkisofs is
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provided.
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- 10th May 2008 libburn-0.4.6 supports formatting and writing of BD-RE,
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full nominal speed for DVD-RAM and BD-RE. cdrskin has a unified blank
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type with automatic media state recognition.
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- 17th May 2008 an old bug with DVD-RAM and now with BD-RE is fixed by
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libburn-0.4.8 to allow libisoburn emulation of multisession on those media.
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- 19th May 2008 libisoburn-0.1.6 brings better table-of-content emulation
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on overwriteble media and disk files.
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- 1st Jun 2008 libisofs-0.6.6 fixes some problems around device files.
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- 3rd Jun 2008 libisoburn-0.1.8 fixes a bug with overwriteable media.
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- 23rd Jun 2008 libisoburn-0.2.0 introduces extraction of files from
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ISO images.
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- 16th Jul 2008 libburn-0.5.0 handles systems with no /dev/sr* but only
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/dev/scd*.
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- 19th Jul 2008 libisoburn/xorriso-0.2.2 can do multi-session in mkisofs
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and cdrecord style. xorriso now can serve underneath growisofs.
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- 20th Aug 2008 libburn-0.5.2 revokes the necessity that a drive must be
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enumerable in order to be adressable. Enumeration is enhanced by examining
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/proc/sys/dev/cdrom/info.
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- 24th Aug 2008 libisoburn/xorriso-0.2.4 introduces a media readability check
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with data retrieval option.
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- 18th Sep 2008 libisofs-0.6.8 supports ISO 9660 Level 3 which allows very
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large data files in the image.
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- 20th Sep 2008 libisoburn/xorriso-0.2.6 takes into respect the new Level 3
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capabilities of libisofs.
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- 6th Oct 2008 libburn-0.5.4 adjusts the changes of 0.5.2 to the needs of
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Linux kernel 2.4 and introduces human readable SCSI error messages.
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------------------------------------------------------------------------------
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation. To be exact: version 2 of that License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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------------------------------------------------------------------------------
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Clarification in my name and in the name of Mario Danic, upcoming copyright
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holders on toplevel of libburnia. To be fully in effect after the remaining
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other copyrighted code has been replaced by ours and by copyright-free
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contributions of our friends:
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------------------------------------------------------------------------------
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We, the copyright holders, agree on the interpretation that
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dynamical linking of our libraries constitutes "use of" and
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not "derivation from" our work in the sense of GPL, provided
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those libraries are compiled from our unaltered code.
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Thus you may link our libraries dynamically with applications
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which are not under GPL. You may distribute our libraries and
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application tools in binary form, if you fulfill the usual
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condition of GPL to offer a copy of the source code -altered
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or unaltered- under GPL.
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We ask you politely to use our work in open source spirit
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and with the due reference to the entire open source community.
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If there should really arise the case where above clarification
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does not suffice to fulfill a clear and neat request in open source
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spirit that would otherwise be declined for mere formal reasons,
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only in that case we will duely consider to issue a special license
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covering only that special case.
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It is the open source idea of responsible freedom which will be
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decisive and you will have to prove that you exhausted all own
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means to qualify for GPL.
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For now we are firmly committed to maintain one single license: GPL.
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signed: Mario Danic, Thomas Schmitt
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