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David Gibson f99cd158a9 libfdt: Fix bug in fdt_subnode_offset_namelen()
There's currently an off-by-one bug in fdt_subnode_offset_namelen()
which causes it to keep searching after it's finished the subnodes of
the given parent, and into the subnodes of siblings of the original
node which come after it in the tree.

This patch fixes the bug.  It also extends the subnode_offset testcase
(updating all of the 'test_tree1' example trees in the process) to
catch it.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2008-11-05 08:12:10 -06:00
Documentation Some Documentation fixes and generalizations. 2008-10-03 09:42:26 -05:00
libfdt libfdt: Fix bug in fdt_subnode_offset_namelen() 2008-11-05 08:12:10 -06:00
scripts Add DTC release version information. 2007-07-07 13:52:25 -05:00
tests libfdt: Fix bug in fdt_subnode_offset_namelen() 2008-11-05 08:12:10 -06:00
.gitignore Merge libfdt into dtc. 2007-06-14 15:05:55 +10:00
checks.c dtc: Run relevant checks on dtb input as well as dts 2008-07-14 12:36:08 -05:00
convert-dtsv0-lexer.l Implement and use an xstrdup() function 2008-10-03 11:12:33 -05:00
data.c dtc: Make many functions 'static' 2008-08-13 13:04:39 -05:00
dtc-lexer.l Remove support for the legacy DTS source file format. 2008-10-03 16:09:34 -05:00
dtc-parser.y Remove support for the legacy DTS source file format. 2008-10-03 16:09:34 -05:00
dtc.c dtc: give advance warning that "-S" is going away. 2008-07-31 10:38:10 -05:00
dtc.h Add conditionalized debug() print macro. 2008-10-03 16:09:37 -05:00
flattree.c Implement and use an xstrdup() function 2008-10-03 11:12:33 -05:00
fstree.c Implement and use an xstrdup() function 2008-10-03 11:12:33 -05:00
ftdump.c dtc: Enable and fix -Wcast-qual warnings 2008-07-14 12:36:08 -05:00
GPL dtc: Remove redundant copy of the GPL 2007-06-25 21:43:11 -05:00
livetree.c dtc: Run relevant checks on dtb input as well as dts 2008-07-14 12:36:08 -05:00
Makefile Rearrange ftdump and convert-dtsv0 into sub-Makefiles. 2008-10-03 10:50:28 -05:00
Makefile.convert-dtsv0 Implement and use an xstrdup() function 2008-10-03 11:12:33 -05:00
Makefile.dtc Implement and use an xstrdup() function 2008-10-03 11:12:33 -05:00
Makefile.ftdump Rearrange ftdump and convert-dtsv0 into sub-Makefiles. 2008-10-03 10:50:28 -05:00
README.license dtc/libfdt: Add README clarifying licensing 2008-01-04 08:37:36 -06:00
srcpos.c Enhance source position implementation. 2008-10-03 15:38:08 -05:00
srcpos.h Enhance source position implementation. 2008-10-03 15:38:08 -05:00
TODO dtc: Update TODO files 2007-12-19 08:20:26 -06:00
treesource.c dtc: Make many functions 'static' 2008-08-13 13:04:39 -05:00
util.c Implement and use an xstrdup() function 2008-10-03 11:12:33 -05:00
util.h Implement and use an xstrdup() function 2008-10-03 11:12:33 -05:00

Licensing and contribution policy of dtc and libfdt
===================================================

This dtc package contains two pieces of software: dtc itself, and
libfdt which comprises the files in the libfdt/ subdirectory.  These
two pieces of software, although closely related, are quite distinct.
dtc does not incoporate or rely on libfdt for its operation, nor vice
versa.  It is important that these two pieces of software have
different license conditions.

As the copyright banners in each source file attest, dtc is licensed
under the GNU GPL.  The full text of the GPL can be found in the file
entitled 'GPL' which should be included in this package.  dtc code,
therefore, may not be incorporated into works which do not have a GPL
compatible license.

libfdt, however, is GPL/BSD dual-licensed.  That is, it may be used
either under the terms of the GPL, or under the terms of the 2-clause
BSD license (aka the ISC license).  The full terms of that license are
given in the copyright banners of each of the libfdt source files.
This is, in practice, equivalent to being BSD licensed, since the
terms of the BSD license are strictly more permissive than the GPL.

I made the decision to license libfdt in this way because I want to
encourage widespread and correct usage of flattened device trees,
including by proprietary or otherwise GPL-incompatible firmware or
tools.  Allowing libfdt to be used under the terms of the BSD license
makes that it easier for vendors or authors of such software to do so.

This does mean that libfdt code could be "stolen" - say, included in a
proprietary fimware and extended without contributing those extensions
back to the libfdt mainline.  While I hope that doesn't happen, I
believe the goal of allowing libfdt to be widely used is more
important than avoiding that.  libfdt is quite small, and hardly
rocket science; so the incentive for such impolite behaviour is small,
and the inconvenience caused therby is not dire.

Licenses such as the LGPL which would allow code to be used in non-GPL
software, but also require contributions to be returned were
considered.  However, libfdt is designed to be used in firmwares and
other environments with unusual technical constraints.  It's difficult
to anticipate all possible changes which might be needed to meld
libfdt into such environments and so difficult to suitably word a
license that puts the boundary between what is and isn't permitted in
the intended place.  Again, I judged encouraging widespread use of
libfdt by keeping the license terms simple and familiar to be the more
important goal.

**IMPORTANT** It's intended that all of libfdt as released remain
permissively licensed this way.  Therefore only contributions which
are released under these terms can be merged into the libfdt mainline.


David Gibson <david@gibson.dropbear.id.au>
(principal original author of dtc and libfdt)
2 November 2007