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Mirror of DTC
b43345039b
In order to work with preprocessed dts files more easily, dts will parse
line number information in the form emitted by cpp.
Anton Blanchard (using a fuzzer) reported that including a line number
directive with a nul character (a literal nul in the input file, not a \0
sequence) would cause dtc to SEGV. I spotted several more problems on
examining the code:
* It modified yytext in place which seems to work, but is ugly and I'm
not sure if it's safe on all lex/flex versions
* The regexp used in the lexer to recognize line number information
accepts strings with escape characters, but it won't process these
escapes.
- GNU cpp at least, will generate \ escapes in line number
information, at least with files containing " or \ in the name
This patch reworks the handling of line number information to address
these problems. \ escapes should now be handled directly. nuls in file
names (either with a literal nul in the input file, or with a \0 escape
sequence) are still not permitted, but will now result in a lexical error
rather than a SEGV.
Reported-by: Anton Blanchard <anton@samba.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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| Documentation | ||
| libfdt | ||
| scripts | ||
| tests | ||
| .gitignore | ||
| .travis.yml | ||
| checks.c | ||
| convert-dtsv0-lexer.l | ||
| data.c | ||
| dtc-lexer.l | ||
| dtc-parser.y | ||
| dtc.c | ||
| dtc.h | ||
| dtdiff | ||
| fdtdump.c | ||
| fdtget.c | ||
| fdtput.c | ||
| flattree.c | ||
| fstree.c | ||
| GPL | ||
| livetree.c | ||
| Makefile | ||
| Makefile.convert-dtsv0 | ||
| Makefile.dtc | ||
| Makefile.utils | ||
| README | ||
| README.license | ||
| srcpos.c | ||
| srcpos.h | ||
| TODO | ||
| treesource.c | ||
| util.c | ||
| util.h | ||
The source tree contains the Device Tree Compiler (dtc) toolchain for working with device tree source and binary files and also libfdt, a utility library for reading and manipulating the binary format. DTC and LIBFDT are maintained by: David Gibson <david@gibson.dropbear.id.au> Jon Loeliger <jdl@jdl.com> Mailing list ------------ The following list is for discussion about dtc and libfdt implementation mailto:devicetree-compiler@vger.kernel.org Core device tree bindings are discussed on the devicetree-spec list: mailto:devicetree-spec@vger.kernel.org Home Page --------- http://devicetree.org/Device_Tree_Compiler